Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
e2882c85 | 3 | Copyright (C) 1994-2018 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 | 55 | #include "typeprint.h" |
ccefe4c4 | 56 | #include "psympriv.h" |
53ce3c39 | 57 | #include <sys/stat.h> |
96d19272 | 58 | #include "completer.h" |
34eaf542 | 59 | #include "vec.h" |
98bfdba5 | 60 | #include "c-lang.h" |
a766d390 | 61 | #include "go-lang.h" |
98bfdba5 | 62 | #include "valprint.h" |
3019eac3 | 63 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 64 | #include "gdb/gdb-index.h" |
60d5a603 | 65 | #include <ctype.h> |
cbb099e8 | 66 | #include "gdb_bfd.h" |
4357ac6c | 67 | #include "f-lang.h" |
05cba821 | 68 | #include "source.h" |
614c279d | 69 | #include "filestuff.h" |
dc294be5 | 70 | #include "build-id.h" |
22cee43f | 71 | #include "namespace.h" |
bef155c3 | 72 | #include "common/gdb_unlinker.h" |
14bc53a8 | 73 | #include "common/function-view.h" |
ecfb656c PA |
74 | #include "common/gdb_optional.h" |
75 | #include "common/underlying.h" | |
d5722aa2 | 76 | #include "common/byte-vector.h" |
927aa2e7 | 77 | #include "common/hash_enum.h" |
bbf2f4df | 78 | #include "filename-seen-cache.h" |
b32b108a | 79 | #include "producer.h" |
c906108c | 80 | #include <fcntl.h> |
c906108c | 81 | #include <sys/types.h> |
325fac50 | 82 | #include <algorithm> |
bc8f2430 JK |
83 | #include <unordered_set> |
84 | #include <unordered_map> | |
c62446b1 | 85 | #include "selftest.h" |
437afbb8 JK |
86 | #include <cmath> |
87 | #include <set> | |
88 | #include <forward_list> | |
c9317f21 | 89 | #include "rust-lang.h" |
b4987c95 | 90 | #include "common/pathstuff.h" |
437afbb8 | 91 | |
73be47f5 DE |
92 | /* When == 1, print basic high level tracing messages. |
93 | When > 1, be more verbose. | |
b4f54984 DE |
94 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
95 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 96 | |
d97bc12b | 97 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 98 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 99 | |
27e0867f DE |
100 | /* When non-zero, dump line number entries as they are read in. */ |
101 | static unsigned int dwarf_line_debug = 0; | |
102 | ||
900e11f9 JK |
103 | /* When non-zero, cross-check physname against demangler. */ |
104 | static int check_physname = 0; | |
105 | ||
481860b3 | 106 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 107 | static int use_deprecated_index_sections = 0; |
481860b3 | 108 | |
6502dd73 DJ |
109 | static const struct objfile_data *dwarf2_objfile_data_key; |
110 | ||
f1e6e072 TT |
111 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
112 | ||
113 | static int dwarf2_locexpr_index; | |
114 | static int dwarf2_loclist_index; | |
115 | static int dwarf2_locexpr_block_index; | |
116 | static int dwarf2_loclist_block_index; | |
117 | ||
73869dc2 DE |
118 | /* A descriptor for dwarf sections. |
119 | ||
120 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
121 | scanned. BUFFER, READIN are filled in later when the section is read. | |
122 | If the section contained compressed data then SIZE is updated to record | |
123 | the uncompressed size of the section. | |
124 | ||
125 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
126 | creating the concept of virtual sections contained within a real section. | |
127 | In DWP V2 the sections of the input DWO files are concatenated together | |
128 | into one section, but section offsets are kept relative to the original | |
129 | input section. | |
130 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
131 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
132 | describe the virtual section. */ | |
133 | ||
dce234bc PP |
134 | struct dwarf2_section_info |
135 | { | |
73869dc2 DE |
136 | union |
137 | { | |
e5aa3347 | 138 | /* If this is a real section, the bfd section. */ |
049412e3 | 139 | asection *section; |
73869dc2 | 140 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 141 | section. */ |
73869dc2 DE |
142 | struct dwarf2_section_info *containing_section; |
143 | } s; | |
19ac8c2e | 144 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 145 | const gdb_byte *buffer; |
73869dc2 | 146 | /* The size of the section, real or virtual. */ |
dce234bc | 147 | bfd_size_type size; |
73869dc2 DE |
148 | /* If this is a virtual section, the offset in the real section. |
149 | Only valid if is_virtual. */ | |
150 | bfd_size_type virtual_offset; | |
be391dca | 151 | /* True if we have tried to read this section. */ |
73869dc2 DE |
152 | char readin; |
153 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 154 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 155 | char is_virtual; |
dce234bc PP |
156 | }; |
157 | ||
8b70b953 TT |
158 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
159 | DEF_VEC_O (dwarf2_section_info_def); | |
160 | ||
9291a0cd TT |
161 | /* All offsets in the index are of this type. It must be |
162 | architecture-independent. */ | |
163 | typedef uint32_t offset_type; | |
164 | ||
165 | DEF_VEC_I (offset_type); | |
166 | ||
156942c7 DE |
167 | /* Ensure only legit values are used. */ |
168 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
169 | do { \ | |
170 | gdb_assert ((unsigned int) (value) <= 1); \ | |
171 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
172 | } while (0) | |
173 | ||
174 | /* Ensure only legit values are used. */ | |
175 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
176 | do { \ | |
177 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
178 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
179 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
180 | } while (0) | |
181 | ||
182 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
183 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
184 | do { \ | |
185 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
186 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
187 | } while (0) | |
188 | ||
3f563c84 PA |
189 | #if WORDS_BIGENDIAN |
190 | ||
191 | /* Convert VALUE between big- and little-endian. */ | |
192 | ||
193 | static offset_type | |
194 | byte_swap (offset_type value) | |
195 | { | |
196 | offset_type result; | |
197 | ||
198 | result = (value & 0xff) << 24; | |
199 | result |= (value & 0xff00) << 8; | |
200 | result |= (value & 0xff0000) >> 8; | |
201 | result |= (value & 0xff000000) >> 24; | |
202 | return result; | |
203 | } | |
204 | ||
205 | #define MAYBE_SWAP(V) byte_swap (V) | |
206 | ||
207 | #else | |
208 | #define MAYBE_SWAP(V) static_cast<offset_type> (V) | |
209 | #endif /* WORDS_BIGENDIAN */ | |
210 | ||
211 | /* An index into a (C++) symbol name component in a symbol name as | |
212 | recorded in the mapped_index's symbol table. For each C++ symbol | |
213 | in the symbol table, we record one entry for the start of each | |
214 | component in the symbol in a table of name components, and then | |
215 | sort the table, in order to be able to binary search symbol names, | |
216 | ignoring leading namespaces, both completion and regular look up. | |
217 | For example, for symbol "A::B::C", we'll have an entry that points | |
218 | to "A::B::C", another that points to "B::C", and another for "C". | |
219 | Note that function symbols in GDB index have no parameter | |
220 | information, just the function/method names. You can convert a | |
221 | name_component to a "const char *" using the | |
222 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
223 | ||
224 | struct name_component | |
225 | { | |
226 | /* Offset in the symbol name where the component starts. Stored as | |
227 | a (32-bit) offset instead of a pointer to save memory and improve | |
228 | locality on 64-bit architectures. */ | |
229 | offset_type name_offset; | |
230 | ||
231 | /* The symbol's index in the symbol and constant pool tables of a | |
232 | mapped_index. */ | |
233 | offset_type idx; | |
234 | }; | |
235 | ||
44ed8f3e PA |
236 | /* Base class containing bits shared by both .gdb_index and |
237 | .debug_name indexes. */ | |
238 | ||
239 | struct mapped_index_base | |
240 | { | |
241 | /* The name_component table (a sorted vector). See name_component's | |
242 | description above. */ | |
243 | std::vector<name_component> name_components; | |
244 | ||
245 | /* How NAME_COMPONENTS is sorted. */ | |
246 | enum case_sensitivity name_components_casing; | |
247 | ||
248 | /* Return the number of names in the symbol table. */ | |
249 | virtual size_t symbol_name_count () const = 0; | |
250 | ||
251 | /* Get the name of the symbol at IDX in the symbol table. */ | |
252 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
253 | ||
254 | /* Return whether the name at IDX in the symbol table should be | |
255 | ignored. */ | |
256 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
257 | { | |
258 | return false; | |
259 | } | |
260 | ||
261 | /* Build the symbol name component sorted vector, if we haven't | |
262 | yet. */ | |
263 | void build_name_components (); | |
264 | ||
265 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
266 | possible matches for LN_NO_PARAMS in the name component | |
267 | vector. */ | |
268 | std::pair<std::vector<name_component>::const_iterator, | |
269 | std::vector<name_component>::const_iterator> | |
270 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
271 | ||
272 | /* Prevent deleting/destroying via a base class pointer. */ | |
273 | protected: | |
274 | ~mapped_index_base() = default; | |
275 | }; | |
276 | ||
9291a0cd TT |
277 | /* A description of the mapped index. The file format is described in |
278 | a comment by the code that writes the index. */ | |
fc898b42 | 279 | struct mapped_index final : public mapped_index_base |
9291a0cd | 280 | { |
f00a2de2 PA |
281 | /* A slot/bucket in the symbol table hash. */ |
282 | struct symbol_table_slot | |
283 | { | |
284 | const offset_type name; | |
285 | const offset_type vec; | |
286 | }; | |
287 | ||
559a7a62 JK |
288 | /* Index data format version. */ |
289 | int version; | |
290 | ||
9291a0cd TT |
291 | /* The total length of the buffer. */ |
292 | off_t total_size; | |
b11b1f88 | 293 | |
f00a2de2 PA |
294 | /* The address table data. */ |
295 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 296 | |
3876f04e | 297 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 298 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 299 | |
9291a0cd TT |
300 | /* A pointer to the constant pool. */ |
301 | const char *constant_pool; | |
3f563c84 | 302 | |
44ed8f3e PA |
303 | bool symbol_name_slot_invalid (offset_type idx) const override |
304 | { | |
305 | const auto &bucket = this->symbol_table[idx]; | |
306 | return bucket.name == 0 && bucket.vec; | |
307 | } | |
5c58de74 | 308 | |
3f563c84 PA |
309 | /* Convenience method to get at the name of the symbol at IDX in the |
310 | symbol table. */ | |
44ed8f3e | 311 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 312 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 313 | |
44ed8f3e PA |
314 | size_t symbol_name_count () const override |
315 | { return this->symbol_table.size (); } | |
9291a0cd TT |
316 | }; |
317 | ||
927aa2e7 JK |
318 | /* A description of the mapped .debug_names. |
319 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 320 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 321 | { |
ed2dc618 SM |
322 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
323 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
324 | {} | |
325 | ||
326 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
327 | bfd_endian dwarf5_byte_order; |
328 | bool dwarf5_is_dwarf64; | |
329 | bool augmentation_is_gdb; | |
330 | uint8_t offset_size; | |
331 | uint32_t cu_count = 0; | |
332 | uint32_t tu_count, bucket_count, name_count; | |
333 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
334 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
335 | const gdb_byte *name_table_string_offs_reordered; | |
336 | const gdb_byte *name_table_entry_offs_reordered; | |
337 | const gdb_byte *entry_pool; | |
338 | ||
339 | struct index_val | |
340 | { | |
341 | ULONGEST dwarf_tag; | |
342 | struct attr | |
343 | { | |
344 | /* Attribute name DW_IDX_*. */ | |
345 | ULONGEST dw_idx; | |
346 | ||
347 | /* Attribute form DW_FORM_*. */ | |
348 | ULONGEST form; | |
349 | ||
350 | /* Value if FORM is DW_FORM_implicit_const. */ | |
351 | LONGEST implicit_const; | |
352 | }; | |
353 | std::vector<attr> attr_vec; | |
354 | }; | |
355 | ||
356 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
357 | ||
358 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
359 | |
360 | /* Implementation of the mapped_index_base virtual interface, for | |
361 | the name_components cache. */ | |
362 | ||
363 | const char *symbol_name_at (offset_type idx) const override | |
364 | { return namei_to_name (idx); } | |
365 | ||
366 | size_t symbol_name_count () const override | |
367 | { return this->name_count; } | |
927aa2e7 JK |
368 | }; |
369 | ||
95554aad TT |
370 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
371 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
372 | ||
52059ffd TT |
373 | struct tu_stats |
374 | { | |
375 | int nr_uniq_abbrev_tables; | |
376 | int nr_symtabs; | |
377 | int nr_symtab_sharers; | |
378 | int nr_stmt_less_type_units; | |
379 | int nr_all_type_units_reallocs; | |
380 | }; | |
381 | ||
9cdd5dbd DE |
382 | /* Collection of data recorded per objfile. |
383 | This hangs off of dwarf2_objfile_data_key. */ | |
384 | ||
fd90ace4 | 385 | struct dwarf2_per_objfile : public allocate_on_obstack |
6502dd73 | 386 | { |
330cdd98 PA |
387 | /* Construct a dwarf2_per_objfile for OBJFILE. NAMES points to the |
388 | dwarf2 section names, or is NULL if the standard ELF names are | |
389 | used. */ | |
390 | dwarf2_per_objfile (struct objfile *objfile, | |
391 | const dwarf2_debug_sections *names); | |
ae038cb0 | 392 | |
330cdd98 PA |
393 | ~dwarf2_per_objfile (); |
394 | ||
d6541620 | 395 | DISABLE_COPY_AND_ASSIGN (dwarf2_per_objfile); |
330cdd98 PA |
396 | |
397 | /* Free all cached compilation units. */ | |
398 | void free_cached_comp_units (); | |
399 | private: | |
400 | /* This function is mapped across the sections and remembers the | |
401 | offset and size of each of the debugging sections we are | |
402 | interested in. */ | |
403 | void locate_sections (bfd *abfd, asection *sectp, | |
404 | const dwarf2_debug_sections &names); | |
405 | ||
406 | public: | |
407 | dwarf2_section_info info {}; | |
408 | dwarf2_section_info abbrev {}; | |
409 | dwarf2_section_info line {}; | |
410 | dwarf2_section_info loc {}; | |
411 | dwarf2_section_info loclists {}; | |
412 | dwarf2_section_info macinfo {}; | |
413 | dwarf2_section_info macro {}; | |
414 | dwarf2_section_info str {}; | |
415 | dwarf2_section_info line_str {}; | |
416 | dwarf2_section_info ranges {}; | |
417 | dwarf2_section_info rnglists {}; | |
418 | dwarf2_section_info addr {}; | |
419 | dwarf2_section_info frame {}; | |
420 | dwarf2_section_info eh_frame {}; | |
421 | dwarf2_section_info gdb_index {}; | |
927aa2e7 JK |
422 | dwarf2_section_info debug_names {}; |
423 | dwarf2_section_info debug_aranges {}; | |
330cdd98 PA |
424 | |
425 | VEC (dwarf2_section_info_def) *types = NULL; | |
8b70b953 | 426 | |
be391dca | 427 | /* Back link. */ |
330cdd98 | 428 | struct objfile *objfile = NULL; |
be391dca | 429 | |
d467dd73 | 430 | /* Table of all the compilation units. This is used to locate |
10b3939b | 431 | the target compilation unit of a particular reference. */ |
330cdd98 | 432 | struct dwarf2_per_cu_data **all_comp_units = NULL; |
ae038cb0 DJ |
433 | |
434 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
330cdd98 | 435 | int n_comp_units = 0; |
ae038cb0 | 436 | |
1fd400ff | 437 | /* The number of .debug_types-related CUs. */ |
330cdd98 | 438 | int n_type_units = 0; |
1fd400ff | 439 | |
6aa5f3a6 DE |
440 | /* The number of elements allocated in all_type_units. |
441 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
330cdd98 | 442 | int n_allocated_type_units = 0; |
6aa5f3a6 | 443 | |
a2ce51a0 DE |
444 | /* The .debug_types-related CUs (TUs). |
445 | This is stored in malloc space because we may realloc it. */ | |
330cdd98 | 446 | struct signatured_type **all_type_units = NULL; |
1fd400ff | 447 | |
f4dc4d17 DE |
448 | /* Table of struct type_unit_group objects. |
449 | The hash key is the DW_AT_stmt_list value. */ | |
330cdd98 | 450 | htab_t type_unit_groups {}; |
72dca2f5 | 451 | |
348e048f DE |
452 | /* A table mapping .debug_types signatures to its signatured_type entry. |
453 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
330cdd98 | 454 | htab_t signatured_types {}; |
348e048f | 455 | |
f4dc4d17 DE |
456 | /* Type unit statistics, to see how well the scaling improvements |
457 | are doing. */ | |
330cdd98 | 458 | struct tu_stats tu_stats {}; |
f4dc4d17 DE |
459 | |
460 | /* A chain of compilation units that are currently read in, so that | |
461 | they can be freed later. */ | |
330cdd98 | 462 | dwarf2_per_cu_data *read_in_chain = NULL; |
f4dc4d17 | 463 | |
3019eac3 DE |
464 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
465 | This is NULL if the table hasn't been allocated yet. */ | |
330cdd98 | 466 | htab_t dwo_files {}; |
3019eac3 | 467 | |
330cdd98 PA |
468 | /* True if we've checked for whether there is a DWP file. */ |
469 | bool dwp_checked = false; | |
80626a55 DE |
470 | |
471 | /* The DWP file if there is one, or NULL. */ | |
330cdd98 | 472 | struct dwp_file *dwp_file = NULL; |
80626a55 | 473 | |
36586728 TT |
474 | /* The shared '.dwz' file, if one exists. This is used when the |
475 | original data was compressed using 'dwz -m'. */ | |
330cdd98 | 476 | struct dwz_file *dwz_file = NULL; |
36586728 | 477 | |
330cdd98 | 478 | /* A flag indicating whether this objfile has a section loaded at a |
72dca2f5 | 479 | VMA of 0. */ |
330cdd98 | 480 | bool has_section_at_zero = false; |
9291a0cd | 481 | |
ae2de4f8 DE |
482 | /* True if we are using the mapped index, |
483 | or we are faking it for OBJF_READNOW's sake. */ | |
330cdd98 | 484 | bool using_index = false; |
9291a0cd | 485 | |
ae2de4f8 | 486 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
330cdd98 | 487 | mapped_index *index_table = NULL; |
98bfdba5 | 488 | |
927aa2e7 JK |
489 | /* The mapped index, or NULL if .debug_names is missing or not being used. */ |
490 | std::unique_ptr<mapped_debug_names> debug_names_table; | |
491 | ||
7b9f3c50 | 492 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
493 | TUs typically share line table entries with a CU, so we maintain a |
494 | separate table of all line table entries to support the sharing. | |
495 | Note that while there can be way more TUs than CUs, we've already | |
496 | sorted all the TUs into "type unit groups", grouped by their | |
497 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
498 | CU and its associated TU group if there is one. */ | |
330cdd98 | 499 | htab_t quick_file_names_table {}; |
7b9f3c50 | 500 | |
98bfdba5 PA |
501 | /* Set during partial symbol reading, to prevent queueing of full |
502 | symbols. */ | |
330cdd98 | 503 | bool reading_partial_symbols = false; |
673bfd45 | 504 | |
dee91e82 | 505 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 506 | This is NULL if not allocated yet. |
02142a6c | 507 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
330cdd98 | 508 | htab_t die_type_hash {}; |
95554aad TT |
509 | |
510 | /* The CUs we recently read. */ | |
330cdd98 | 511 | VEC (dwarf2_per_cu_ptr) *just_read_cus = NULL; |
527f3840 JK |
512 | |
513 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
330cdd98 | 514 | htab_t line_header_hash {}; |
bbf2f4df PA |
515 | |
516 | /* Table containing all filenames. This is an optional because the | |
517 | table is lazily constructed on first access. */ | |
518 | gdb::optional<filename_seen_cache> filenames_cache; | |
6502dd73 DJ |
519 | }; |
520 | ||
ed2dc618 SM |
521 | /* Get the dwarf2_per_objfile associated to OBJFILE. */ |
522 | ||
523 | struct dwarf2_per_objfile * | |
524 | get_dwarf2_per_objfile (struct objfile *objfile) | |
525 | { | |
526 | return ((struct dwarf2_per_objfile *) | |
527 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
528 | } | |
529 | ||
530 | /* Set the dwarf2_per_objfile associated to OBJFILE. */ | |
531 | ||
532 | void | |
533 | set_dwarf2_per_objfile (struct objfile *objfile, | |
534 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
535 | { | |
536 | gdb_assert (get_dwarf2_per_objfile (objfile) == NULL); | |
537 | set_objfile_data (objfile, dwarf2_objfile_data_key, dwarf2_per_objfile); | |
538 | } | |
c906108c | 539 | |
251d32d9 | 540 | /* Default names of the debugging sections. */ |
c906108c | 541 | |
233a11ab CS |
542 | /* Note that if the debugging section has been compressed, it might |
543 | have a name like .zdebug_info. */ | |
544 | ||
9cdd5dbd DE |
545 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
546 | { | |
251d32d9 TG |
547 | { ".debug_info", ".zdebug_info" }, |
548 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
549 | { ".debug_line", ".zdebug_line" }, | |
550 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 551 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 552 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 553 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 554 | { ".debug_str", ".zdebug_str" }, |
43988095 | 555 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 556 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 557 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 558 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 559 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
560 | { ".debug_frame", ".zdebug_frame" }, |
561 | { ".eh_frame", NULL }, | |
24d3216f | 562 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
563 | { ".debug_names", ".zdebug_names" }, |
564 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 565 | 23 |
251d32d9 | 566 | }; |
c906108c | 567 | |
80626a55 | 568 | /* List of DWO/DWP sections. */ |
3019eac3 | 569 | |
80626a55 | 570 | static const struct dwop_section_names |
3019eac3 DE |
571 | { |
572 | struct dwarf2_section_names abbrev_dwo; | |
573 | struct dwarf2_section_names info_dwo; | |
574 | struct dwarf2_section_names line_dwo; | |
575 | struct dwarf2_section_names loc_dwo; | |
43988095 | 576 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
577 | struct dwarf2_section_names macinfo_dwo; |
578 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
579 | struct dwarf2_section_names str_dwo; |
580 | struct dwarf2_section_names str_offsets_dwo; | |
581 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
582 | struct dwarf2_section_names cu_index; |
583 | struct dwarf2_section_names tu_index; | |
3019eac3 | 584 | } |
80626a55 | 585 | dwop_section_names = |
3019eac3 DE |
586 | { |
587 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
588 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
589 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
590 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 591 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
592 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
593 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
594 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
595 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
596 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
597 | { ".debug_cu_index", ".zdebug_cu_index" }, |
598 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
599 | }; |
600 | ||
c906108c SS |
601 | /* local data types */ |
602 | ||
107d2387 AC |
603 | /* The data in a compilation unit header, after target2host |
604 | translation, looks like this. */ | |
c906108c | 605 | struct comp_unit_head |
a738430d | 606 | { |
c764a876 | 607 | unsigned int length; |
a738430d | 608 | short version; |
a738430d MK |
609 | unsigned char addr_size; |
610 | unsigned char signed_addr_p; | |
9c541725 | 611 | sect_offset abbrev_sect_off; |
57349743 | 612 | |
a738430d MK |
613 | /* Size of file offsets; either 4 or 8. */ |
614 | unsigned int offset_size; | |
57349743 | 615 | |
a738430d MK |
616 | /* Size of the length field; either 4 or 12. */ |
617 | unsigned int initial_length_size; | |
57349743 | 618 | |
43988095 JK |
619 | enum dwarf_unit_type unit_type; |
620 | ||
a738430d MK |
621 | /* Offset to the first byte of this compilation unit header in the |
622 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 623 | sect_offset sect_off; |
57349743 | 624 | |
d00adf39 DE |
625 | /* Offset to first die in this cu from the start of the cu. |
626 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 627 | cu_offset first_die_cu_offset; |
43988095 JK |
628 | |
629 | /* 64-bit signature of this type unit - it is valid only for | |
630 | UNIT_TYPE DW_UT_type. */ | |
631 | ULONGEST signature; | |
632 | ||
633 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 634 | cu_offset type_cu_offset_in_tu; |
a738430d | 635 | }; |
c906108c | 636 | |
3da10d80 KS |
637 | /* Type used for delaying computation of method physnames. |
638 | See comments for compute_delayed_physnames. */ | |
639 | struct delayed_method_info | |
640 | { | |
641 | /* The type to which the method is attached, i.e., its parent class. */ | |
642 | struct type *type; | |
643 | ||
644 | /* The index of the method in the type's function fieldlists. */ | |
645 | int fnfield_index; | |
646 | ||
647 | /* The index of the method in the fieldlist. */ | |
648 | int index; | |
649 | ||
650 | /* The name of the DIE. */ | |
651 | const char *name; | |
652 | ||
653 | /* The DIE associated with this method. */ | |
654 | struct die_info *die; | |
655 | }; | |
656 | ||
e7c27a73 DJ |
657 | /* Internal state when decoding a particular compilation unit. */ |
658 | struct dwarf2_cu | |
659 | { | |
fcd3b13d SM |
660 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
661 | ~dwarf2_cu (); | |
662 | ||
663 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
664 | ||
d00adf39 | 665 | /* The header of the compilation unit. */ |
fcd3b13d | 666 | struct comp_unit_head header {}; |
e142c38c | 667 | |
d00adf39 | 668 | /* Base address of this compilation unit. */ |
fcd3b13d | 669 | CORE_ADDR base_address = 0; |
d00adf39 DE |
670 | |
671 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 672 | int base_known = 0; |
d00adf39 | 673 | |
e142c38c | 674 | /* The language we are debugging. */ |
fcd3b13d SM |
675 | enum language language = language_unknown; |
676 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 677 | |
fcd3b13d | 678 | const char *producer = nullptr; |
b0f35d58 | 679 | |
e142c38c DJ |
680 | /* The generic symbol table building routines have separate lists for |
681 | file scope symbols and all all other scopes (local scopes). So | |
682 | we need to select the right one to pass to add_symbol_to_list(). | |
683 | We do it by keeping a pointer to the correct list in list_in_scope. | |
684 | ||
685 | FIXME: The original dwarf code just treated the file scope as the | |
686 | first local scope, and all other local scopes as nested local | |
687 | scopes, and worked fine. Check to see if we really need to | |
688 | distinguish these in buildsym.c. */ | |
fcd3b13d | 689 | struct pending **list_in_scope = nullptr; |
e142c38c | 690 | |
b64f50a1 JK |
691 | /* Hash table holding all the loaded partial DIEs |
692 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 693 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
694 | |
695 | /* Storage for things with the same lifetime as this read-in compilation | |
696 | unit, including partial DIEs. */ | |
fcd3b13d | 697 | auto_obstack comp_unit_obstack; |
72bf9492 | 698 | |
ae038cb0 DJ |
699 | /* When multiple dwarf2_cu structures are living in memory, this field |
700 | chains them all together, so that they can be released efficiently. | |
701 | We will probably also want a generation counter so that most-recently-used | |
702 | compilation units are cached... */ | |
fcd3b13d | 703 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 704 | |
69d751e3 | 705 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
706 | struct dwarf2_per_cu_data *per_cu; |
707 | ||
708 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 709 | int last_used = 0; |
ae038cb0 | 710 | |
b64f50a1 JK |
711 | /* A hash table of DIE cu_offset for following references with |
712 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 713 | htab_t die_hash = nullptr; |
10b3939b DJ |
714 | |
715 | /* Full DIEs if read in. */ | |
fcd3b13d | 716 | struct die_info *dies = nullptr; |
10b3939b DJ |
717 | |
718 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
719 | units referenced by this one. Only set during full symbol processing; | |
720 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 721 | htab_t dependencies = nullptr; |
10b3939b | 722 | |
cb1df416 | 723 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 724 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
725 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
726 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
727 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
728 | to the line header as long as this DIE is being processed. See | |
729 | process_die_scope. */ | |
fcd3b13d | 730 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 731 | |
3da10d80 KS |
732 | /* A list of methods which need to have physnames computed |
733 | after all type information has been read. */ | |
c89b44cd | 734 | std::vector<delayed_method_info> method_list; |
3da10d80 | 735 | |
96408a79 | 736 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 737 | htab_t call_site_htab = nullptr; |
96408a79 | 738 | |
034e5797 DE |
739 | /* Non-NULL if this CU came from a DWO file. |
740 | There is an invariant here that is important to remember: | |
741 | Except for attributes copied from the top level DIE in the "main" | |
742 | (or "stub") file in preparation for reading the DWO file | |
743 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
744 | Either there isn't a DWO file (in which case this is NULL and the point | |
745 | is moot), or there is and either we're not going to read it (in which | |
746 | case this is NULL) or there is and we are reading it (in which case this | |
747 | is non-NULL). */ | |
fcd3b13d | 748 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
749 | |
750 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
751 | (zero is a valid value though). | |
1dbab08b | 752 | Note this value comes from the Fission stub CU/TU's DIE. */ |
fcd3b13d | 753 | ULONGEST addr_base = 0; |
3019eac3 | 754 | |
2e3cf129 DE |
755 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
756 | (zero is a valid value though). | |
1dbab08b | 757 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 758 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
759 | be used without needing to know whether DWO files are in use or not. |
760 | N.B. This does not apply to DW_AT_ranges appearing in | |
761 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
762 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
763 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
764 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 765 | ULONGEST ranges_base = 0; |
2e3cf129 | 766 | |
c9317f21 TT |
767 | /* When reading debug info generated by older versions of rustc, we |
768 | have to rewrite some union types to be struct types with a | |
769 | variant part. This rewriting must be done after the CU is fully | |
770 | read in, because otherwise at the point of rewriting some struct | |
771 | type might not have been fully processed. So, we keep a list of | |
772 | all such types here and process them after expansion. */ | |
773 | std::vector<struct type *> rust_unions; | |
774 | ||
ae038cb0 DJ |
775 | /* Mark used when releasing cached dies. */ |
776 | unsigned int mark : 1; | |
777 | ||
8be455d7 JK |
778 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
779 | This test is imperfect as there may exist optimized debug code not using | |
780 | any location list and still facing inlining issues if handled as | |
781 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 782 | unsigned int has_loclist : 1; |
ba919b58 | 783 | |
1b80a9fa JK |
784 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
785 | if all the producer_is_* fields are valid. This information is cached | |
786 | because profiling CU expansion showed excessive time spent in | |
787 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
788 | unsigned int checked_producer : 1; |
789 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 790 | unsigned int producer_is_gcc_lt_4_3 : 1; |
5230b05a | 791 | unsigned int producer_is_icc_lt_14 : 1; |
4d4ec4e5 TT |
792 | |
793 | /* When set, the file that we're processing is known to have | |
794 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
795 | this information, but later versions do. */ | |
796 | ||
797 | unsigned int processing_has_namespace_info : 1; | |
d590ff25 YQ |
798 | |
799 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
e7c27a73 DJ |
800 | }; |
801 | ||
10b3939b DJ |
802 | /* Persistent data held for a compilation unit, even when not |
803 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 804 | read_symtab_private field of the psymtab. */ |
10b3939b | 805 | |
ae038cb0 DJ |
806 | struct dwarf2_per_cu_data |
807 | { | |
36586728 | 808 | /* The start offset and length of this compilation unit. |
45452591 | 809 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
810 | initial_length_size. |
811 | If the DIE refers to a DWO file, this is always of the original die, | |
812 | not the DWO file. */ | |
9c541725 | 813 | sect_offset sect_off; |
36586728 | 814 | unsigned int length; |
ae038cb0 | 815 | |
43988095 JK |
816 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
817 | short dwarf_version; | |
818 | ||
ae038cb0 DJ |
819 | /* Flag indicating this compilation unit will be read in before |
820 | any of the current compilation units are processed. */ | |
c764a876 | 821 | unsigned int queued : 1; |
ae038cb0 | 822 | |
0d99eb77 DE |
823 | /* This flag will be set when reading partial DIEs if we need to load |
824 | absolutely all DIEs for this compilation unit, instead of just the ones | |
825 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
826 | hash table and don't find it. */ |
827 | unsigned int load_all_dies : 1; | |
828 | ||
0186c6a7 DE |
829 | /* Non-zero if this CU is from .debug_types. |
830 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
831 | this is non-zero. */ | |
3019eac3 DE |
832 | unsigned int is_debug_types : 1; |
833 | ||
36586728 TT |
834 | /* Non-zero if this CU is from the .dwz file. */ |
835 | unsigned int is_dwz : 1; | |
836 | ||
a2ce51a0 DE |
837 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
838 | This flag is only valid if is_debug_types is true. | |
839 | We can't read a CU directly from a DWO file: There are required | |
840 | attributes in the stub. */ | |
841 | unsigned int reading_dwo_directly : 1; | |
842 | ||
7ee85ab1 DE |
843 | /* Non-zero if the TU has been read. |
844 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
845 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
846 | fetching them from random other DWOs (due to comdat folding). | |
847 | If the TU has already been read, the optimization is unnecessary | |
848 | (and unwise - we don't want to change where gdb thinks the TU lives | |
849 | "midflight"). | |
850 | This flag is only valid if is_debug_types is true. */ | |
851 | unsigned int tu_read : 1; | |
852 | ||
3019eac3 DE |
853 | /* The section this CU/TU lives in. |
854 | If the DIE refers to a DWO file, this is always the original die, | |
855 | not the DWO file. */ | |
8a0459fd | 856 | struct dwarf2_section_info *section; |
348e048f | 857 | |
17ea53c3 | 858 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
859 | of the CU cache it gets reset to NULL again. This is left as NULL for |
860 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 861 | struct dwarf2_cu *cu; |
1c379e20 | 862 | |
e3b94546 SM |
863 | /* The corresponding dwarf2_per_objfile. */ |
864 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
9291a0cd | 865 | |
fffbe6a8 YQ |
866 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
867 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
868 | union |
869 | { | |
870 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 871 | or NULL for unread partial units. */ |
9291a0cd TT |
872 | struct partial_symtab *psymtab; |
873 | ||
874 | /* Data needed by the "quick" functions. */ | |
875 | struct dwarf2_per_cu_quick_data *quick; | |
876 | } v; | |
95554aad | 877 | |
796a7ff8 DE |
878 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
879 | while reading psymtabs, used to compute the psymtab dependencies, | |
880 | and then cleared. Then it is filled in again while reading full | |
881 | symbols, and only deleted when the objfile is destroyed. | |
882 | ||
883 | This is also used to work around a difference between the way gold | |
884 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
885 | is a gold bug. For symbols coming from TUs, gold records in the index | |
886 | the CU that includes the TU instead of the TU itself. This breaks | |
887 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
888 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
889 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
890 | we need to look in TU Z to find X. Fortunately, this is akin to | |
891 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
892 | .gdb_index version <=7 this also records the TUs that the CU referred | |
893 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
894 | indices so we only pay a price for gold generated indices. |
895 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 896 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
897 | }; |
898 | ||
348e048f DE |
899 | /* Entry in the signatured_types hash table. */ |
900 | ||
901 | struct signatured_type | |
902 | { | |
42e7ad6c | 903 | /* The "per_cu" object of this type. |
ac9ec31b | 904 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
905 | N.B.: This is the first member so that it's easy to convert pointers |
906 | between them. */ | |
907 | struct dwarf2_per_cu_data per_cu; | |
908 | ||
3019eac3 | 909 | /* The type's signature. */ |
348e048f DE |
910 | ULONGEST signature; |
911 | ||
3019eac3 | 912 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
913 | If this TU is a DWO stub and the definition lives in a DWO file |
914 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
915 | cu_offset type_offset_in_tu; |
916 | ||
917 | /* Offset in the section of the type's DIE. | |
918 | If the definition lives in a DWO file, this is the offset in the | |
919 | .debug_types.dwo section. | |
920 | The value is zero until the actual value is known. | |
921 | Zero is otherwise not a valid section offset. */ | |
922 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
923 | |
924 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
925 | can share them. This points to the containing symtab. */ | |
926 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
927 | |
928 | /* The type. | |
929 | The first time we encounter this type we fully read it in and install it | |
930 | in the symbol tables. Subsequent times we only need the type. */ | |
931 | struct type *type; | |
a2ce51a0 DE |
932 | |
933 | /* Containing DWO unit. | |
934 | This field is valid iff per_cu.reading_dwo_directly. */ | |
935 | struct dwo_unit *dwo_unit; | |
348e048f DE |
936 | }; |
937 | ||
0186c6a7 DE |
938 | typedef struct signatured_type *sig_type_ptr; |
939 | DEF_VEC_P (sig_type_ptr); | |
940 | ||
094b34ac DE |
941 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
942 | This includes type_unit_group and quick_file_names. */ | |
943 | ||
944 | struct stmt_list_hash | |
945 | { | |
946 | /* The DWO unit this table is from or NULL if there is none. */ | |
947 | struct dwo_unit *dwo_unit; | |
948 | ||
949 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 950 | sect_offset line_sect_off; |
094b34ac DE |
951 | }; |
952 | ||
f4dc4d17 DE |
953 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
954 | an object of this type. */ | |
955 | ||
956 | struct type_unit_group | |
957 | { | |
0186c6a7 | 958 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
959 | To simplify things we create an artificial CU that "includes" all the |
960 | type units using this stmt_list so that the rest of the code still has | |
961 | a "per_cu" handle on the symtab. | |
962 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 963 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
964 | struct dwarf2_per_cu_data per_cu; |
965 | ||
0186c6a7 DE |
966 | /* The TUs that share this DW_AT_stmt_list entry. |
967 | This is added to while parsing type units to build partial symtabs, | |
968 | and is deleted afterwards and not used again. */ | |
969 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 970 | |
43f3e411 | 971 | /* The compunit symtab. |
094b34ac | 972 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
973 | so we create an essentially anonymous symtab as the compunit symtab. */ |
974 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 975 | |
094b34ac DE |
976 | /* The data used to construct the hash key. */ |
977 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
978 | |
979 | /* The number of symtabs from the line header. | |
980 | The value here must match line_header.num_file_names. */ | |
981 | unsigned int num_symtabs; | |
982 | ||
983 | /* The symbol tables for this TU (obtained from the files listed in | |
984 | DW_AT_stmt_list). | |
985 | WARNING: The order of entries here must match the order of entries | |
986 | in the line header. After the first TU using this type_unit_group, the | |
987 | line header for the subsequent TUs is recreated from this. This is done | |
988 | because we need to use the same symtabs for each TU using the same | |
989 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
990 | there's no guarantee the line header doesn't have duplicate entries. */ | |
991 | struct symtab **symtabs; | |
992 | }; | |
993 | ||
73869dc2 | 994 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
995 | |
996 | struct dwo_sections | |
997 | { | |
998 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
999 | struct dwarf2_section_info line; |
1000 | struct dwarf2_section_info loc; | |
43988095 | 1001 | struct dwarf2_section_info loclists; |
09262596 DE |
1002 | struct dwarf2_section_info macinfo; |
1003 | struct dwarf2_section_info macro; | |
3019eac3 DE |
1004 | struct dwarf2_section_info str; |
1005 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
1006 | /* In the case of a virtual DWO file, these two are unused. */ |
1007 | struct dwarf2_section_info info; | |
3019eac3 DE |
1008 | VEC (dwarf2_section_info_def) *types; |
1009 | }; | |
1010 | ||
c88ee1f0 | 1011 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
1012 | |
1013 | struct dwo_unit | |
1014 | { | |
1015 | /* Backlink to the containing struct dwo_file. */ | |
1016 | struct dwo_file *dwo_file; | |
1017 | ||
1018 | /* The "id" that distinguishes this CU/TU. | |
1019 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
1020 | Since signatures came first, we stick with it for consistency. */ | |
1021 | ULONGEST signature; | |
1022 | ||
1023 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 1024 | struct dwarf2_section_info *section; |
3019eac3 | 1025 | |
9c541725 PA |
1026 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
1027 | sect_offset sect_off; | |
3019eac3 DE |
1028 | unsigned int length; |
1029 | ||
1030 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
1031 | cu_offset type_offset_in_tu; | |
1032 | }; | |
1033 | ||
73869dc2 DE |
1034 | /* include/dwarf2.h defines the DWP section codes. |
1035 | It defines a max value but it doesn't define a min value, which we | |
1036 | use for error checking, so provide one. */ | |
1037 | ||
1038 | enum dwp_v2_section_ids | |
1039 | { | |
1040 | DW_SECT_MIN = 1 | |
1041 | }; | |
1042 | ||
80626a55 | 1043 | /* Data for one DWO file. |
57d63ce2 DE |
1044 | |
1045 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
1046 | appears in a DWP file). DWP files don't really have DWO files per se - | |
1047 | comdat folding of types "loses" the DWO file they came from, and from | |
1048 | a high level view DWP files appear to contain a mass of random types. | |
1049 | However, to maintain consistency with the non-DWP case we pretend DWP | |
1050 | files contain virtual DWO files, and we assign each TU with one virtual | |
1051 | DWO file (generally based on the line and abbrev section offsets - | |
1052 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
1053 | |
1054 | struct dwo_file | |
1055 | { | |
0ac5b59e | 1056 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
1057 | For virtual DWO files the name is constructed from the section offsets |
1058 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
1059 | from related CU+TUs. */ | |
0ac5b59e DE |
1060 | const char *dwo_name; |
1061 | ||
1062 | /* The DW_AT_comp_dir attribute. */ | |
1063 | const char *comp_dir; | |
3019eac3 | 1064 | |
80626a55 DE |
1065 | /* The bfd, when the file is open. Otherwise this is NULL. |
1066 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
1067 | bfd *dbfd; | |
3019eac3 | 1068 | |
73869dc2 DE |
1069 | /* The sections that make up this DWO file. |
1070 | Remember that for virtual DWO files in DWP V2, these are virtual | |
1071 | sections (for lack of a better name). */ | |
3019eac3 DE |
1072 | struct dwo_sections sections; |
1073 | ||
33c5cd75 DB |
1074 | /* The CUs in the file. |
1075 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
1076 | an extension to handle LLVM's Link Time Optimization output (where | |
1077 | multiple source files may be compiled into a single object/dwo pair). */ | |
1078 | htab_t cus; | |
3019eac3 DE |
1079 | |
1080 | /* Table of TUs in the file. | |
1081 | Each element is a struct dwo_unit. */ | |
1082 | htab_t tus; | |
1083 | }; | |
1084 | ||
80626a55 DE |
1085 | /* These sections are what may appear in a DWP file. */ |
1086 | ||
1087 | struct dwp_sections | |
1088 | { | |
73869dc2 | 1089 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
1090 | struct dwarf2_section_info str; |
1091 | struct dwarf2_section_info cu_index; | |
1092 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
1093 | |
1094 | /* These are only used by DWP version 2 files. | |
1095 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
1096 | sections are referenced by section number, and are not recorded here. | |
1097 | In DWP version 2 there is at most one copy of all these sections, each | |
1098 | section being (effectively) comprised of the concatenation of all of the | |
1099 | individual sections that exist in the version 1 format. | |
1100 | To keep the code simple we treat each of these concatenated pieces as a | |
1101 | section itself (a virtual section?). */ | |
1102 | struct dwarf2_section_info abbrev; | |
1103 | struct dwarf2_section_info info; | |
1104 | struct dwarf2_section_info line; | |
1105 | struct dwarf2_section_info loc; | |
1106 | struct dwarf2_section_info macinfo; | |
1107 | struct dwarf2_section_info macro; | |
1108 | struct dwarf2_section_info str_offsets; | |
1109 | struct dwarf2_section_info types; | |
80626a55 DE |
1110 | }; |
1111 | ||
73869dc2 DE |
1112 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
1113 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 1114 | |
73869dc2 | 1115 | struct virtual_v1_dwo_sections |
80626a55 DE |
1116 | { |
1117 | struct dwarf2_section_info abbrev; | |
1118 | struct dwarf2_section_info line; | |
1119 | struct dwarf2_section_info loc; | |
1120 | struct dwarf2_section_info macinfo; | |
1121 | struct dwarf2_section_info macro; | |
1122 | struct dwarf2_section_info str_offsets; | |
1123 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 1124 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
1125 | struct dwarf2_section_info info_or_types; |
1126 | }; | |
1127 | ||
73869dc2 DE |
1128 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
1129 | In version 2, the sections of the DWO files are concatenated together | |
1130 | and stored in one section of that name. Thus each ELF section contains | |
1131 | several "virtual" sections. */ | |
1132 | ||
1133 | struct virtual_v2_dwo_sections | |
1134 | { | |
1135 | bfd_size_type abbrev_offset; | |
1136 | bfd_size_type abbrev_size; | |
1137 | ||
1138 | bfd_size_type line_offset; | |
1139 | bfd_size_type line_size; | |
1140 | ||
1141 | bfd_size_type loc_offset; | |
1142 | bfd_size_type loc_size; | |
1143 | ||
1144 | bfd_size_type macinfo_offset; | |
1145 | bfd_size_type macinfo_size; | |
1146 | ||
1147 | bfd_size_type macro_offset; | |
1148 | bfd_size_type macro_size; | |
1149 | ||
1150 | bfd_size_type str_offsets_offset; | |
1151 | bfd_size_type str_offsets_size; | |
1152 | ||
1153 | /* Each DWP hash table entry records one CU or one TU. | |
1154 | That is recorded here, and copied to dwo_unit.section. */ | |
1155 | bfd_size_type info_or_types_offset; | |
1156 | bfd_size_type info_or_types_size; | |
1157 | }; | |
1158 | ||
80626a55 DE |
1159 | /* Contents of DWP hash tables. */ |
1160 | ||
1161 | struct dwp_hash_table | |
1162 | { | |
73869dc2 | 1163 | uint32_t version, nr_columns; |
80626a55 | 1164 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
1165 | const gdb_byte *hash_table, *unit_table; |
1166 | union | |
1167 | { | |
1168 | struct | |
1169 | { | |
1170 | const gdb_byte *indices; | |
1171 | } v1; | |
1172 | struct | |
1173 | { | |
1174 | /* This is indexed by column number and gives the id of the section | |
1175 | in that column. */ | |
1176 | #define MAX_NR_V2_DWO_SECTIONS \ | |
1177 | (1 /* .debug_info or .debug_types */ \ | |
1178 | + 1 /* .debug_abbrev */ \ | |
1179 | + 1 /* .debug_line */ \ | |
1180 | + 1 /* .debug_loc */ \ | |
1181 | + 1 /* .debug_str_offsets */ \ | |
1182 | + 1 /* .debug_macro or .debug_macinfo */) | |
1183 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
1184 | const gdb_byte *offsets; | |
1185 | const gdb_byte *sizes; | |
1186 | } v2; | |
1187 | } section_pool; | |
80626a55 DE |
1188 | }; |
1189 | ||
1190 | /* Data for one DWP file. */ | |
1191 | ||
1192 | struct dwp_file | |
1193 | { | |
1194 | /* Name of the file. */ | |
1195 | const char *name; | |
1196 | ||
73869dc2 DE |
1197 | /* File format version. */ |
1198 | int version; | |
1199 | ||
93417882 | 1200 | /* The bfd. */ |
80626a55 DE |
1201 | bfd *dbfd; |
1202 | ||
1203 | /* Section info for this file. */ | |
1204 | struct dwp_sections sections; | |
1205 | ||
57d63ce2 | 1206 | /* Table of CUs in the file. */ |
80626a55 DE |
1207 | const struct dwp_hash_table *cus; |
1208 | ||
1209 | /* Table of TUs in the file. */ | |
1210 | const struct dwp_hash_table *tus; | |
1211 | ||
19ac8c2e DE |
1212 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
1213 | htab_t loaded_cus; | |
1214 | htab_t loaded_tus; | |
80626a55 | 1215 | |
73869dc2 DE |
1216 | /* Table to map ELF section numbers to their sections. |
1217 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
1218 | unsigned int num_sections; |
1219 | asection **elf_sections; | |
1220 | }; | |
1221 | ||
36586728 TT |
1222 | /* This represents a '.dwz' file. */ |
1223 | ||
1224 | struct dwz_file | |
1225 | { | |
1226 | /* A dwz file can only contain a few sections. */ | |
1227 | struct dwarf2_section_info abbrev; | |
1228 | struct dwarf2_section_info info; | |
1229 | struct dwarf2_section_info str; | |
1230 | struct dwarf2_section_info line; | |
1231 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1232 | struct dwarf2_section_info gdb_index; |
927aa2e7 | 1233 | struct dwarf2_section_info debug_names; |
36586728 TT |
1234 | |
1235 | /* The dwz's BFD. */ | |
1236 | bfd *dwz_bfd; | |
1237 | }; | |
1238 | ||
0963b4bd MS |
1239 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1240 | al. which are used for both .debug_info and .debug_types dies. | |
1241 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1242 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1243 | |
1244 | struct die_reader_specs | |
1245 | { | |
a32a8923 | 1246 | /* The bfd of die_section. */ |
93311388 DE |
1247 | bfd* abfd; |
1248 | ||
1249 | /* The CU of the DIE we are parsing. */ | |
1250 | struct dwarf2_cu *cu; | |
1251 | ||
80626a55 | 1252 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1253 | struct dwo_file *dwo_file; |
1254 | ||
dee91e82 | 1255 | /* The section the die comes from. |
3019eac3 | 1256 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1257 | struct dwarf2_section_info *die_section; |
1258 | ||
1259 | /* die_section->buffer. */ | |
d521ce57 | 1260 | const gdb_byte *buffer; |
f664829e DE |
1261 | |
1262 | /* The end of the buffer. */ | |
1263 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1264 | |
1265 | /* The value of the DW_AT_comp_dir attribute. */ | |
1266 | const char *comp_dir; | |
685af9cd TT |
1267 | |
1268 | /* The abbreviation table to use when reading the DIEs. */ | |
1269 | struct abbrev_table *abbrev_table; | |
93311388 DE |
1270 | }; |
1271 | ||
fd820528 | 1272 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1273 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1274 | const gdb_byte *info_ptr, |
dee91e82 DE |
1275 | struct die_info *comp_unit_die, |
1276 | int has_children, | |
1277 | void *data); | |
1278 | ||
ecfb656c PA |
1279 | /* A 1-based directory index. This is a strong typedef to prevent |
1280 | accidentally using a directory index as a 0-based index into an | |
1281 | array/vector. */ | |
1282 | enum class dir_index : unsigned int {}; | |
1283 | ||
1284 | /* Likewise, a 1-based file name index. */ | |
1285 | enum class file_name_index : unsigned int {}; | |
1286 | ||
52059ffd TT |
1287 | struct file_entry |
1288 | { | |
fff8551c PA |
1289 | file_entry () = default; |
1290 | ||
ecfb656c | 1291 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
1292 | unsigned int mod_time_, unsigned int length_) |
1293 | : name (name_), | |
ecfb656c | 1294 | d_index (d_index_), |
fff8551c PA |
1295 | mod_time (mod_time_), |
1296 | length (length_) | |
1297 | {} | |
1298 | ||
ecfb656c PA |
1299 | /* Return the include directory at D_INDEX stored in LH. Returns |
1300 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
1301 | const char *include_dir (const line_header *lh) const; |
1302 | ||
fff8551c PA |
1303 | /* The file name. Note this is an observing pointer. The memory is |
1304 | owned by debug_line_buffer. */ | |
1305 | const char *name {}; | |
1306 | ||
8c43009f | 1307 | /* The directory index (1-based). */ |
ecfb656c | 1308 | dir_index d_index {}; |
fff8551c PA |
1309 | |
1310 | unsigned int mod_time {}; | |
1311 | ||
1312 | unsigned int length {}; | |
1313 | ||
1314 | /* True if referenced by the Line Number Program. */ | |
1315 | bool included_p {}; | |
1316 | ||
83769d0b | 1317 | /* The associated symbol table, if any. */ |
fff8551c | 1318 | struct symtab *symtab {}; |
52059ffd TT |
1319 | }; |
1320 | ||
debd256d JB |
1321 | /* The line number information for a compilation unit (found in the |
1322 | .debug_line section) begins with a "statement program header", | |
1323 | which contains the following information. */ | |
1324 | struct line_header | |
1325 | { | |
fff8551c PA |
1326 | line_header () |
1327 | : offset_in_dwz {} | |
1328 | {} | |
1329 | ||
1330 | /* Add an entry to the include directory table. */ | |
1331 | void add_include_dir (const char *include_dir); | |
1332 | ||
1333 | /* Add an entry to the file name table. */ | |
ecfb656c | 1334 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1335 | unsigned int mod_time, unsigned int length); |
1336 | ||
ecfb656c | 1337 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1338 | is out of bounds. */ |
ecfb656c | 1339 | const char *include_dir_at (dir_index index) const |
8c43009f | 1340 | { |
ecfb656c PA |
1341 | /* Convert directory index number (1-based) to vector index |
1342 | (0-based). */ | |
1343 | size_t vec_index = to_underlying (index) - 1; | |
1344 | ||
1345 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 1346 | return NULL; |
ecfb656c | 1347 | return include_dirs[vec_index]; |
8c43009f PA |
1348 | } |
1349 | ||
ecfb656c | 1350 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1351 | is out of bounds. */ |
ecfb656c | 1352 | file_entry *file_name_at (file_name_index index) |
8c43009f | 1353 | { |
ecfb656c PA |
1354 | /* Convert file name index number (1-based) to vector index |
1355 | (0-based). */ | |
1356 | size_t vec_index = to_underlying (index) - 1; | |
1357 | ||
1358 | if (vec_index >= file_names.size ()) | |
fff8551c | 1359 | return NULL; |
ecfb656c | 1360 | return &file_names[vec_index]; |
fff8551c PA |
1361 | } |
1362 | ||
1363 | /* Const version of the above. */ | |
1364 | const file_entry *file_name_at (unsigned int index) const | |
1365 | { | |
1366 | if (index >= file_names.size ()) | |
8c43009f PA |
1367 | return NULL; |
1368 | return &file_names[index]; | |
1369 | } | |
1370 | ||
527f3840 | 1371 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1372 | sect_offset sect_off {}; |
527f3840 JK |
1373 | |
1374 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1375 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1376 | ||
1377 | unsigned int total_length {}; | |
1378 | unsigned short version {}; | |
1379 | unsigned int header_length {}; | |
1380 | unsigned char minimum_instruction_length {}; | |
1381 | unsigned char maximum_ops_per_instruction {}; | |
1382 | unsigned char default_is_stmt {}; | |
1383 | int line_base {}; | |
1384 | unsigned char line_range {}; | |
1385 | unsigned char opcode_base {}; | |
debd256d JB |
1386 | |
1387 | /* standard_opcode_lengths[i] is the number of operands for the | |
1388 | standard opcode whose value is i. This means that | |
1389 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1390 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1391 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1392 | |
fff8551c PA |
1393 | /* The include_directories table. Note these are observing |
1394 | pointers. The memory is owned by debug_line_buffer. */ | |
1395 | std::vector<const char *> include_dirs; | |
debd256d | 1396 | |
fff8551c PA |
1397 | /* The file_names table. */ |
1398 | std::vector<file_entry> file_names; | |
debd256d JB |
1399 | |
1400 | /* The start and end of the statement program following this | |
6502dd73 | 1401 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1402 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1403 | }; |
c906108c | 1404 | |
fff8551c PA |
1405 | typedef std::unique_ptr<line_header> line_header_up; |
1406 | ||
8c43009f PA |
1407 | const char * |
1408 | file_entry::include_dir (const line_header *lh) const | |
1409 | { | |
ecfb656c | 1410 | return lh->include_dir_at (d_index); |
8c43009f PA |
1411 | } |
1412 | ||
c906108c | 1413 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1414 | need this much information. */ |
6f06d47b | 1415 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1416 | { |
6f06d47b YQ |
1417 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1418 | ||
1419 | /* Disable assign but still keep copy ctor, which is needed | |
1420 | load_partial_dies. */ | |
1421 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1422 | ||
52356b79 YQ |
1423 | /* Adjust the partial die before generating a symbol for it. This |
1424 | function may set the is_external flag or change the DIE's | |
1425 | name. */ | |
1426 | void fixup (struct dwarf2_cu *cu); | |
1427 | ||
48fbe735 YQ |
1428 | /* Read a minimal amount of information into the minimal die |
1429 | structure. */ | |
1430 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1431 | const struct abbrev_info &abbrev, | |
1432 | const gdb_byte *info_ptr); | |
1433 | ||
72bf9492 | 1434 | /* Offset of this DIE. */ |
6f06d47b | 1435 | const sect_offset sect_off; |
72bf9492 DJ |
1436 | |
1437 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1438 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1439 | |
72bf9492 | 1440 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1441 | const unsigned int has_children : 1; |
1442 | ||
72bf9492 DJ |
1443 | unsigned int is_external : 1; |
1444 | unsigned int is_declaration : 1; | |
1445 | unsigned int has_type : 1; | |
1446 | unsigned int has_specification : 1; | |
1447 | unsigned int has_pc_info : 1; | |
481860b3 | 1448 | unsigned int may_be_inlined : 1; |
72bf9492 | 1449 | |
0c1b455e TT |
1450 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1451 | unsigned int main_subprogram : 1; | |
1452 | ||
72bf9492 DJ |
1453 | /* Flag set if the SCOPE field of this structure has been |
1454 | computed. */ | |
1455 | unsigned int scope_set : 1; | |
1456 | ||
fa4028e9 JB |
1457 | /* Flag set if the DIE has a byte_size attribute. */ |
1458 | unsigned int has_byte_size : 1; | |
1459 | ||
ff908ebf AW |
1460 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1461 | unsigned int has_const_value : 1; | |
1462 | ||
98bfdba5 PA |
1463 | /* Flag set if any of the DIE's children are template arguments. */ |
1464 | unsigned int has_template_arguments : 1; | |
1465 | ||
52356b79 | 1466 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1467 | unsigned int fixup_called : 1; |
1468 | ||
36586728 TT |
1469 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1470 | unsigned int is_dwz : 1; | |
1471 | ||
1472 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1473 | unsigned int spec_is_dwz : 1; | |
1474 | ||
72bf9492 | 1475 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1476 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1477 | const char *name = nullptr; |
72bf9492 | 1478 | |
abc72ce4 | 1479 | /* The linkage name, if present. */ |
6f06d47b | 1480 | const char *linkage_name = nullptr; |
abc72ce4 | 1481 | |
72bf9492 DJ |
1482 | /* The scope to prepend to our children. This is generally |
1483 | allocated on the comp_unit_obstack, so will disappear | |
1484 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1485 | const char *scope = nullptr; |
72bf9492 | 1486 | |
95554aad TT |
1487 | /* Some data associated with the partial DIE. The tag determines |
1488 | which field is live. */ | |
1489 | union | |
1490 | { | |
1491 | /* The location description associated with this DIE, if any. */ | |
1492 | struct dwarf_block *locdesc; | |
1493 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1494 | sect_offset sect_off; |
6f06d47b | 1495 | } d {}; |
72bf9492 DJ |
1496 | |
1497 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1498 | CORE_ADDR lowpc = 0; |
1499 | CORE_ADDR highpc = 0; | |
72bf9492 | 1500 | |
93311388 | 1501 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1502 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1503 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1504 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1505 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1506 | |
1507 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1508 | DW_AT_specification (or DW_AT_abstract_origin or | |
1509 | DW_AT_extension). */ | |
6f06d47b | 1510 | sect_offset spec_offset {}; |
72bf9492 DJ |
1511 | |
1512 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1513 | if any. */ | |
6f06d47b YQ |
1514 | struct partial_die_info *die_parent = nullptr; |
1515 | struct partial_die_info *die_child = nullptr; | |
1516 | struct partial_die_info *die_sibling = nullptr; | |
1517 | ||
1518 | friend struct partial_die_info * | |
1519 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1520 | ||
1521 | private: | |
1522 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1523 | partial_die_info (sect_offset sect_off) | |
1524 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1525 | { | |
1526 | } | |
1527 | ||
1528 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1529 | int has_children_) | |
1530 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1531 | { | |
1532 | is_external = 0; | |
1533 | is_declaration = 0; | |
1534 | has_type = 0; | |
1535 | has_specification = 0; | |
1536 | has_pc_info = 0; | |
1537 | may_be_inlined = 0; | |
1538 | main_subprogram = 0; | |
1539 | scope_set = 0; | |
1540 | has_byte_size = 0; | |
1541 | has_const_value = 0; | |
1542 | has_template_arguments = 0; | |
1543 | fixup_called = 0; | |
1544 | is_dwz = 0; | |
1545 | spec_is_dwz = 0; | |
1546 | } | |
c906108c SS |
1547 | }; |
1548 | ||
0963b4bd | 1549 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1550 | struct abbrev_info |
1551 | { | |
1552 | unsigned int number; /* number identifying abbrev */ | |
1553 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1554 | unsigned short has_children; /* boolean */ |
1555 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1556 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1557 | struct abbrev_info *next; /* next in chain */ | |
1558 | }; | |
1559 | ||
1560 | struct attr_abbrev | |
1561 | { | |
9d25dd43 DE |
1562 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1563 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1564 | |
1565 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1566 | LONGEST implicit_const; | |
c906108c SS |
1567 | }; |
1568 | ||
433df2d4 DE |
1569 | /* Size of abbrev_table.abbrev_hash_table. */ |
1570 | #define ABBREV_HASH_SIZE 121 | |
1571 | ||
1572 | /* Top level data structure to contain an abbreviation table. */ | |
1573 | ||
1574 | struct abbrev_table | |
1575 | { | |
685af9cd TT |
1576 | explicit abbrev_table (sect_offset off) |
1577 | : sect_off (off) | |
1578 | { | |
4a17f768 | 1579 | m_abbrevs = |
685af9cd | 1580 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1581 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1582 | } |
1583 | ||
1584 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1585 | ||
1586 | /* Allocate space for a struct abbrev_info object in | |
1587 | ABBREV_TABLE. */ | |
1588 | struct abbrev_info *alloc_abbrev (); | |
1589 | ||
1590 | /* Add an abbreviation to the table. */ | |
1591 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1592 | ||
1593 | /* Look up an abbrev in the table. | |
1594 | Returns NULL if the abbrev is not found. */ | |
1595 | ||
1596 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1597 | ||
1598 | ||
f4dc4d17 DE |
1599 | /* Where the abbrev table came from. |
1600 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1601 | const sect_offset sect_off; |
433df2d4 DE |
1602 | |
1603 | /* Storage for the abbrev table. */ | |
685af9cd | 1604 | auto_obstack abbrev_obstack; |
433df2d4 | 1605 | |
4a17f768 YQ |
1606 | private: |
1607 | ||
433df2d4 DE |
1608 | /* Hash table of abbrevs. |
1609 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1610 | It could be statically allocated, but the previous code didn't so we | |
1611 | don't either. */ | |
4a17f768 | 1612 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1613 | }; |
1614 | ||
685af9cd TT |
1615 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1616 | ||
0963b4bd | 1617 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1618 | struct attribute |
1619 | { | |
9d25dd43 | 1620 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1621 | ENUM_BITFIELD(dwarf_form) form : 15; |
1622 | ||
1623 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1624 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1625 | here for better struct attribute alignment. */ | |
1626 | unsigned int string_is_canonical : 1; | |
1627 | ||
b60c80d6 DJ |
1628 | union |
1629 | { | |
15d034d0 | 1630 | const char *str; |
b60c80d6 | 1631 | struct dwarf_block *blk; |
43bbcdc2 PH |
1632 | ULONGEST unsnd; |
1633 | LONGEST snd; | |
b60c80d6 | 1634 | CORE_ADDR addr; |
ac9ec31b | 1635 | ULONGEST signature; |
b60c80d6 DJ |
1636 | } |
1637 | u; | |
1638 | }; | |
1639 | ||
0963b4bd | 1640 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1641 | struct die_info |
1642 | { | |
76815b17 DE |
1643 | /* DWARF-2 tag for this DIE. */ |
1644 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1645 | ||
1646 | /* Number of attributes */ | |
98bfdba5 PA |
1647 | unsigned char num_attrs; |
1648 | ||
1649 | /* True if we're presently building the full type name for the | |
1650 | type derived from this DIE. */ | |
1651 | unsigned char building_fullname : 1; | |
76815b17 | 1652 | |
adde2bff DE |
1653 | /* True if this die is in process. PR 16581. */ |
1654 | unsigned char in_process : 1; | |
1655 | ||
76815b17 DE |
1656 | /* Abbrev number */ |
1657 | unsigned int abbrev; | |
1658 | ||
93311388 | 1659 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1660 | sect_offset sect_off; |
78ba4af6 JB |
1661 | |
1662 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1663 | points to this die's parent; CHILD points to the first child of | |
1664 | this node; and all the children of a given node are chained | |
4950bc1c | 1665 | together via their SIBLING fields. */ |
639d11d3 DC |
1666 | struct die_info *child; /* Its first child, if any. */ |
1667 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1668 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1669 | |
b60c80d6 DJ |
1670 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1671 | zero, but it's not common and zero-sized arrays are not | |
1672 | sufficiently portable C. */ | |
1673 | struct attribute attrs[1]; | |
c906108c SS |
1674 | }; |
1675 | ||
0963b4bd | 1676 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1677 | |
1678 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1679 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1680 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1681 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1682 | #define DW_SND(attr) ((attr)->u.snd) | |
1683 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1684 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1685 | |
0963b4bd | 1686 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1687 | struct dwarf_block |
1688 | { | |
56eb65bd | 1689 | size_t size; |
1d6edc3c JK |
1690 | |
1691 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1692 | const gdb_byte *data; |
c906108c SS |
1693 | }; |
1694 | ||
c906108c SS |
1695 | #ifndef ATTR_ALLOC_CHUNK |
1696 | #define ATTR_ALLOC_CHUNK 4 | |
1697 | #endif | |
1698 | ||
c906108c SS |
1699 | /* Allocate fields for structs, unions and enums in this size. */ |
1700 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1701 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1702 | #endif | |
1703 | ||
c906108c SS |
1704 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1705 | but this would require a corresponding change in unpack_field_as_long | |
1706 | and friends. */ | |
1707 | static int bits_per_byte = 8; | |
1708 | ||
2ddeaf8a TT |
1709 | /* When reading a variant or variant part, we track a bit more |
1710 | information about the field, and store it in an object of this | |
1711 | type. */ | |
1712 | ||
1713 | struct variant_field | |
1714 | { | |
1715 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1716 | value. */ | |
1717 | ULONGEST discriminant_value; | |
1718 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1719 | default branch. */ | |
1720 | bool default_branch; | |
1721 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1722 | field is the discriminant. */ | |
1723 | bool is_discriminant; | |
1724 | }; | |
1725 | ||
52059ffd TT |
1726 | struct nextfield |
1727 | { | |
be2daae6 TT |
1728 | int accessibility = 0; |
1729 | int virtuality = 0; | |
2ddeaf8a | 1730 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1731 | struct variant_field variant {}; |
1732 | struct field field {}; | |
52059ffd TT |
1733 | }; |
1734 | ||
1735 | struct fnfieldlist | |
1736 | { | |
be2daae6 TT |
1737 | const char *name = nullptr; |
1738 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1739 | }; |
1740 | ||
c906108c SS |
1741 | /* The routines that read and process dies for a C struct or C++ class |
1742 | pass lists of data member fields and lists of member function fields | |
1743 | in an instance of a field_info structure, as defined below. */ | |
1744 | struct field_info | |
c5aa993b | 1745 | { |
0963b4bd | 1746 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1747 | std::vector<struct nextfield> fields; |
1748 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1749 | |
7d0ccb61 | 1750 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1751 | int nfields = 0; |
c906108c | 1752 | |
c5aa993b | 1753 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1754 | int non_public_fields = 0; |
c906108c | 1755 | |
c5aa993b JM |
1756 | /* Member function fieldlist array, contains name of possibly overloaded |
1757 | member function, number of overloaded member functions and a pointer | |
1758 | to the head of the member function field chain. */ | |
be2daae6 | 1759 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1760 | |
1761 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1762 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1763 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1764 | |
1765 | /* Nested types defined by this class and the number of elements in this | |
1766 | list. */ | |
be2daae6 | 1767 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1768 | }; |
c906108c | 1769 | |
10b3939b DJ |
1770 | /* One item on the queue of compilation units to read in full symbols |
1771 | for. */ | |
1772 | struct dwarf2_queue_item | |
1773 | { | |
1774 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1775 | enum language pretend_language; |
10b3939b DJ |
1776 | struct dwarf2_queue_item *next; |
1777 | }; | |
1778 | ||
1779 | /* The current queue. */ | |
1780 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1781 | ||
ae038cb0 DJ |
1782 | /* Loaded secondary compilation units are kept in memory until they |
1783 | have not been referenced for the processing of this many | |
1784 | compilation units. Set this to zero to disable caching. Cache | |
1785 | sizes of up to at least twenty will improve startup time for | |
1786 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1787 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1788 | static void |
b4f54984 DE |
1789 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1790 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1791 | { |
3e43a32a | 1792 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1793 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1794 | value); |
1795 | } | |
4390d890 | 1796 | \f |
c906108c SS |
1797 | /* local function prototypes */ |
1798 | ||
a32a8923 DE |
1799 | static const char *get_section_name (const struct dwarf2_section_info *); |
1800 | ||
1801 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1802 | ||
918dd910 JK |
1803 | static void dwarf2_find_base_address (struct die_info *die, |
1804 | struct dwarf2_cu *cu); | |
1805 | ||
0018ea6f DE |
1806 | static struct partial_symtab *create_partial_symtab |
1807 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1808 | ||
f1902523 JK |
1809 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1810 | const gdb_byte *info_ptr, | |
1811 | struct die_info *type_unit_die, | |
1812 | int has_children, void *data); | |
1813 | ||
ed2dc618 SM |
1814 | static void dwarf2_build_psymtabs_hard |
1815 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1816 | |
72bf9492 DJ |
1817 | static void scan_partial_symbols (struct partial_die_info *, |
1818 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1819 | int, struct dwarf2_cu *); |
c906108c | 1820 | |
72bf9492 DJ |
1821 | static void add_partial_symbol (struct partial_die_info *, |
1822 | struct dwarf2_cu *); | |
63d06c5c | 1823 | |
72bf9492 DJ |
1824 | static void add_partial_namespace (struct partial_die_info *pdi, |
1825 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1826 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1827 | |
5d7cb8df | 1828 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1829 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1830 | struct dwarf2_cu *cu); |
1831 | ||
72bf9492 DJ |
1832 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1833 | struct dwarf2_cu *cu); | |
91c24f0a | 1834 | |
bc30ff58 JB |
1835 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1836 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1837 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1838 | |
257e7a09 YQ |
1839 | static void dwarf2_read_symtab (struct partial_symtab *, |
1840 | struct objfile *); | |
c906108c | 1841 | |
a14ed312 | 1842 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1843 | |
685af9cd | 1844 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1845 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1846 | sect_offset); | |
433df2d4 | 1847 | |
d521ce57 | 1848 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1849 | |
dee91e82 | 1850 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1851 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1852 | |
36586728 | 1853 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1854 | struct dwarf2_cu *); |
72bf9492 | 1855 | |
d521ce57 TT |
1856 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1857 | struct attribute *, struct attr_abbrev *, | |
1858 | const gdb_byte *); | |
a8329558 | 1859 | |
a1855c1d | 1860 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1861 | |
a1855c1d | 1862 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1863 | |
a1855c1d | 1864 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1865 | |
a1855c1d | 1866 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1867 | |
a1855c1d | 1868 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1869 | |
d521ce57 | 1870 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1871 | unsigned int *); |
c906108c | 1872 | |
d521ce57 | 1873 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1874 | |
1875 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1876 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1877 | unsigned int *, unsigned int *); |
613e1657 | 1878 | |
d521ce57 TT |
1879 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1880 | const struct comp_unit_head *, | |
c764a876 DE |
1881 | unsigned int *); |
1882 | ||
d521ce57 | 1883 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1884 | |
ed2dc618 SM |
1885 | static sect_offset read_abbrev_offset |
1886 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1887 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1888 | |
d521ce57 | 1889 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1890 | |
d521ce57 | 1891 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1892 | |
ed2dc618 SM |
1893 | static const char *read_indirect_string |
1894 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1895 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1896 | |
ed2dc618 SM |
1897 | static const char *read_indirect_line_string |
1898 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1899 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1900 | |
ed2dc618 SM |
1901 | static const char *read_indirect_string_at_offset |
1902 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1903 | LONGEST str_offset); | |
927aa2e7 | 1904 | |
ed2dc618 SM |
1905 | static const char *read_indirect_string_from_dwz |
1906 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1907 | |
d521ce57 | 1908 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1909 | |
d521ce57 TT |
1910 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1911 | const gdb_byte *, | |
3019eac3 DE |
1912 | unsigned int *); |
1913 | ||
d521ce57 | 1914 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1915 | ULONGEST str_index); |
3019eac3 | 1916 | |
e142c38c | 1917 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1918 | |
e142c38c DJ |
1919 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1920 | struct dwarf2_cu *); | |
c906108c | 1921 | |
348e048f | 1922 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1923 | unsigned int); |
348e048f | 1924 | |
7d45c7c3 KB |
1925 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1926 | struct dwarf2_cu *cu); | |
1927 | ||
05cf31d1 JB |
1928 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1929 | struct dwarf2_cu *cu); | |
1930 | ||
e142c38c | 1931 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1932 | |
e142c38c | 1933 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1934 | struct dwarf2_cu **); |
63d06c5c | 1935 | |
9c541725 | 1936 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1937 | struct dwarf2_cu *cu); |
debd256d | 1938 | |
f3f5162e | 1939 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1940 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1941 | CORE_ADDR, int decode_mapping); |
c906108c | 1942 | |
4d663531 | 1943 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1944 | |
43f3e411 DE |
1945 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1946 | const char *, const char *, | |
1947 | CORE_ADDR); | |
f4dc4d17 | 1948 | |
a14ed312 | 1949 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1950 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1951 | |
ff39bb5e | 1952 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1953 | struct dwarf2_cu *); |
c906108c | 1954 | |
ff39bb5e | 1955 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1956 | struct type *type, |
1957 | const char *name, | |
1958 | struct obstack *obstack, | |
12df843f | 1959 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1960 | const gdb_byte **bytes, |
98bfdba5 | 1961 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1962 | |
e7c27a73 | 1963 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1964 | |
b4ba55a1 JB |
1965 | static int need_gnat_info (struct dwarf2_cu *); |
1966 | ||
3e43a32a MS |
1967 | static struct type *die_descriptive_type (struct die_info *, |
1968 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1969 | |
1970 | static void set_descriptive_type (struct type *, struct die_info *, | |
1971 | struct dwarf2_cu *); | |
1972 | ||
e7c27a73 DJ |
1973 | static struct type *die_containing_type (struct die_info *, |
1974 | struct dwarf2_cu *); | |
c906108c | 1975 | |
ff39bb5e | 1976 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1977 | struct dwarf2_cu *); |
c906108c | 1978 | |
f792889a | 1979 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1980 | |
673bfd45 DE |
1981 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1982 | ||
0d5cff50 | 1983 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1984 | |
6e70227d | 1985 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1986 | const char *suffix, int physname, |
1987 | struct dwarf2_cu *cu); | |
63d06c5c | 1988 | |
e7c27a73 | 1989 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1990 | |
348e048f DE |
1991 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1992 | ||
e7c27a73 | 1993 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1994 | |
e7c27a73 | 1995 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1996 | |
96408a79 SA |
1997 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1998 | ||
71a3c369 TT |
1999 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
2000 | ||
ff013f42 JK |
2001 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
2002 | struct dwarf2_cu *, struct partial_symtab *); | |
2003 | ||
3a2b436a | 2004 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 2005 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
2006 | enum pc_bounds_kind |
2007 | { | |
e385593e | 2008 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
2009 | PC_BOUNDS_NOT_PRESENT, |
2010 | ||
e385593e JK |
2011 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
2012 | were present but they do not form a valid range of PC addresses. */ | |
2013 | PC_BOUNDS_INVALID, | |
2014 | ||
3a2b436a JK |
2015 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
2016 | PC_BOUNDS_RANGES, | |
2017 | ||
2018 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
2019 | PC_BOUNDS_HIGH_LOW, | |
2020 | }; | |
2021 | ||
2022 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
2023 | CORE_ADDR *, CORE_ADDR *, | |
2024 | struct dwarf2_cu *, | |
2025 | struct partial_symtab *); | |
c906108c | 2026 | |
fae299cd DC |
2027 | static void get_scope_pc_bounds (struct die_info *, |
2028 | CORE_ADDR *, CORE_ADDR *, | |
2029 | struct dwarf2_cu *); | |
2030 | ||
801e3a5b JB |
2031 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
2032 | CORE_ADDR, struct dwarf2_cu *); | |
2033 | ||
a14ed312 | 2034 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 2035 | struct dwarf2_cu *); |
c906108c | 2036 | |
a14ed312 | 2037 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 2038 | struct type *, struct dwarf2_cu *); |
c906108c | 2039 | |
a14ed312 | 2040 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 2041 | struct die_info *, struct type *, |
e7c27a73 | 2042 | struct dwarf2_cu *); |
c906108c | 2043 | |
a14ed312 | 2044 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
2045 | struct type *, |
2046 | struct dwarf2_cu *); | |
c906108c | 2047 | |
134d01f1 | 2048 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 2049 | |
e7c27a73 | 2050 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 2051 | |
e7c27a73 | 2052 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 2053 | |
5d7cb8df JK |
2054 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
2055 | ||
22cee43f PMR |
2056 | static struct using_direct **using_directives (enum language); |
2057 | ||
27aa8d6a SW |
2058 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
2059 | ||
74921315 KS |
2060 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
2061 | ||
f55ee35c JK |
2062 | static struct type *read_module_type (struct die_info *die, |
2063 | struct dwarf2_cu *cu); | |
2064 | ||
38d518c9 | 2065 | static const char *namespace_name (struct die_info *die, |
e142c38c | 2066 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 2067 | |
134d01f1 | 2068 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 2069 | |
e7c27a73 | 2070 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 2071 | |
6e70227d | 2072 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
2073 | struct dwarf2_cu *); |
2074 | ||
bf6af496 | 2075 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 2076 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 2077 | struct die_info *); |
639d11d3 | 2078 | |
dee91e82 | 2079 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
2080 | const gdb_byte *info_ptr, |
2081 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
2082 | struct die_info *parent); |
2083 | ||
d521ce57 TT |
2084 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
2085 | struct die_info **, const gdb_byte *, | |
2086 | int *, int); | |
3019eac3 | 2087 | |
d521ce57 TT |
2088 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
2089 | struct die_info **, const gdb_byte *, | |
2090 | int *); | |
93311388 | 2091 | |
e7c27a73 | 2092 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 2093 | |
15d034d0 TT |
2094 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
2095 | struct obstack *); | |
71c25dea | 2096 | |
15d034d0 | 2097 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 2098 | |
15d034d0 | 2099 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
2100 | struct die_info *die, |
2101 | struct dwarf2_cu *cu); | |
2102 | ||
ca69b9e6 DE |
2103 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
2104 | struct dwarf2_cu *cu); | |
2105 | ||
e142c38c | 2106 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 2107 | struct dwarf2_cu **); |
9219021c | 2108 | |
f39c6ffd | 2109 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 2110 | |
f39c6ffd | 2111 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 2112 | |
f39c6ffd | 2113 | static const char *dwarf_form_name (unsigned int); |
c906108c | 2114 | |
a121b7c1 | 2115 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 2116 | |
f39c6ffd | 2117 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 2118 | |
f9aca02d | 2119 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 2120 | |
d97bc12b DE |
2121 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
2122 | ||
2123 | static void dump_die_for_error (struct die_info *); | |
2124 | ||
2125 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
2126 | struct die_info *); | |
c906108c | 2127 | |
d97bc12b | 2128 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 2129 | |
51545339 | 2130 | static void store_in_ref_table (struct die_info *, |
10b3939b | 2131 | struct dwarf2_cu *); |
c906108c | 2132 | |
ff39bb5e | 2133 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 2134 | |
ff39bb5e | 2135 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 2136 | |
348e048f | 2137 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 2138 | const struct attribute *, |
348e048f DE |
2139 | struct dwarf2_cu **); |
2140 | ||
10b3939b | 2141 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 2142 | const struct attribute *, |
f2f0e013 | 2143 | struct dwarf2_cu **); |
c906108c | 2144 | |
348e048f | 2145 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 2146 | const struct attribute *, |
348e048f DE |
2147 | struct dwarf2_cu **); |
2148 | ||
ac9ec31b DE |
2149 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
2150 | struct dwarf2_cu *); | |
2151 | ||
2152 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 2153 | const struct attribute *, |
ac9ec31b DE |
2154 | struct dwarf2_cu *); |
2155 | ||
e5fe5e75 | 2156 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 2157 | |
52dc124a | 2158 | static void read_signatured_type (struct signatured_type *); |
348e048f | 2159 | |
63e43d3a PMR |
2160 | static int attr_to_dynamic_prop (const struct attribute *attr, |
2161 | struct die_info *die, struct dwarf2_cu *cu, | |
2162 | struct dynamic_prop *prop); | |
2163 | ||
c906108c SS |
2164 | /* memory allocation interface */ |
2165 | ||
7b5a2f43 | 2166 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 2167 | |
b60c80d6 | 2168 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 2169 | |
43f3e411 | 2170 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 2171 | |
6e5a29e1 | 2172 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 2173 | |
6e5a29e1 | 2174 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 2175 | |
6e5a29e1 | 2176 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 2177 | |
6e5a29e1 | 2178 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 2179 | |
8cf6f0b1 TT |
2180 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
2181 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 2182 | const struct attribute *attr); |
8cf6f0b1 | 2183 | |
ff39bb5e | 2184 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 2185 | struct symbol *sym, |
f1e6e072 TT |
2186 | struct dwarf2_cu *cu, |
2187 | int is_block); | |
4c2df51b | 2188 | |
d521ce57 TT |
2189 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
2190 | const gdb_byte *info_ptr, | |
2191 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 2192 | |
72bf9492 DJ |
2193 | static hashval_t partial_die_hash (const void *item); |
2194 | ||
2195 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
2196 | ||
ae038cb0 | 2197 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
2198 | (sect_offset sect_off, unsigned int offset_in_dwz, |
2199 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 2200 | |
9816fde3 | 2201 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
2202 | struct die_info *comp_unit_die, |
2203 | enum language pretend_language); | |
93311388 | 2204 | |
ae038cb0 DJ |
2205 | static void free_cached_comp_units (void *); |
2206 | ||
ed2dc618 | 2207 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 2208 | |
dee91e82 | 2209 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 2210 | |
f792889a DJ |
2211 | static struct type *set_die_type (struct die_info *, struct type *, |
2212 | struct dwarf2_cu *); | |
1c379e20 | 2213 | |
ed2dc618 | 2214 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 2215 | |
ed2dc618 | 2216 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 2217 | |
95554aad TT |
2218 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
2219 | enum language); | |
10b3939b | 2220 | |
95554aad TT |
2221 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
2222 | enum language); | |
10b3939b | 2223 | |
f4dc4d17 DE |
2224 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
2225 | enum language); | |
2226 | ||
10b3939b DJ |
2227 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
2228 | struct dwarf2_per_cu_data *); | |
2229 | ||
ae038cb0 DJ |
2230 | static void dwarf2_mark (struct dwarf2_cu *); |
2231 | ||
2232 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
2233 | ||
b64f50a1 | 2234 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 2235 | struct dwarf2_per_cu_data *); |
673bfd45 | 2236 | |
f792889a | 2237 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 2238 | |
95554aad TT |
2239 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
2240 | enum language pretend_language); | |
2241 | ||
ed2dc618 | 2242 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 2243 | |
b303c6f6 AB |
2244 | /* Class, the destructor of which frees all allocated queue entries. This |
2245 | will only have work to do if an error was thrown while processing the | |
2246 | dwarf. If no error was thrown then the queue entries should have all | |
2247 | been processed, and freed, as we went along. */ | |
2248 | ||
2249 | class dwarf2_queue_guard | |
2250 | { | |
2251 | public: | |
2252 | dwarf2_queue_guard () = default; | |
2253 | ||
2254 | /* Free any entries remaining on the queue. There should only be | |
2255 | entries left if we hit an error while processing the dwarf. */ | |
2256 | ~dwarf2_queue_guard () | |
2257 | { | |
2258 | struct dwarf2_queue_item *item, *last; | |
2259 | ||
2260 | item = dwarf2_queue; | |
2261 | while (item) | |
2262 | { | |
2263 | /* Anything still marked queued is likely to be in an | |
2264 | inconsistent state, so discard it. */ | |
2265 | if (item->per_cu->queued) | |
2266 | { | |
2267 | if (item->per_cu->cu != NULL) | |
2268 | free_one_cached_comp_unit (item->per_cu); | |
2269 | item->per_cu->queued = 0; | |
2270 | } | |
2271 | ||
2272 | last = item; | |
2273 | item = item->next; | |
2274 | xfree (last); | |
2275 | } | |
2276 | ||
2277 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2278 | } | |
2279 | }; | |
2280 | ||
d721ba37 PA |
2281 | /* The return type of find_file_and_directory. Note, the enclosed |
2282 | string pointers are only valid while this object is valid. */ | |
2283 | ||
2284 | struct file_and_directory | |
2285 | { | |
2286 | /* The filename. This is never NULL. */ | |
2287 | const char *name; | |
2288 | ||
2289 | /* The compilation directory. NULL if not known. If we needed to | |
2290 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
2291 | points directly to the DW_AT_comp_dir string attribute owned by | |
2292 | the obstack that owns the DIE. */ | |
2293 | const char *comp_dir; | |
2294 | ||
2295 | /* If we needed to build a new string for comp_dir, this is what | |
2296 | owns the storage. */ | |
2297 | std::string comp_dir_storage; | |
2298 | }; | |
2299 | ||
2300 | static file_and_directory find_file_and_directory (struct die_info *die, | |
2301 | struct dwarf2_cu *cu); | |
9291a0cd TT |
2302 | |
2303 | static char *file_full_name (int file, struct line_header *lh, | |
2304 | const char *comp_dir); | |
2305 | ||
43988095 JK |
2306 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
2307 | enum class rcuh_kind { COMPILE, TYPE }; | |
2308 | ||
d521ce57 | 2309 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
2310 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
2311 | struct comp_unit_head *header, | |
36586728 | 2312 | struct dwarf2_section_info *section, |
d521ce57 | 2313 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 2314 | rcuh_kind section_kind); |
36586728 | 2315 | |
fd820528 | 2316 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
2317 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
2318 | int use_existing_cu, int keep, | |
3019eac3 DE |
2319 | die_reader_func_ftype *die_reader_func, void *data); |
2320 | ||
dee91e82 DE |
2321 | static void init_cutu_and_read_dies_simple |
2322 | (struct dwarf2_per_cu_data *this_cu, | |
2323 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 2324 | |
673bfd45 | 2325 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2326 | |
3019eac3 DE |
2327 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2328 | ||
57d63ce2 | 2329 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
2330 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2331 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 2332 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 2333 | |
ed2dc618 SM |
2334 | static struct dwp_file *get_dwp_file |
2335 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 2336 | |
3019eac3 | 2337 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2338 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2339 | |
2340 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2341 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2342 | |
89e63ee4 DE |
2343 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2344 | ||
3019eac3 DE |
2345 | static void free_dwo_file_cleanup (void *); |
2346 | ||
ed2dc618 SM |
2347 | struct free_dwo_file_cleanup_data |
2348 | { | |
2349 | struct dwo_file *dwo_file; | |
2350 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2351 | }; | |
2352 | ||
2353 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
95554aad | 2354 | |
1b80a9fa | 2355 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2356 | |
2357 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2358 | \f |
2359 | /* Various complaints about symbol reading that don't abort the process. */ | |
2360 | ||
2361 | static void | |
2362 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2363 | { | |
2364 | complaint (&symfile_complaints, | |
2365 | _("statement list doesn't fit in .debug_line section")); | |
2366 | } | |
2367 | ||
2368 | static void | |
2369 | dwarf2_debug_line_missing_file_complaint (void) | |
2370 | { | |
2371 | complaint (&symfile_complaints, | |
2372 | _(".debug_line section has line data without a file")); | |
2373 | } | |
2374 | ||
2375 | static void | |
2376 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2377 | { | |
2378 | complaint (&symfile_complaints, | |
2379 | _(".debug_line section has line " | |
2380 | "program sequence without an end")); | |
2381 | } | |
2382 | ||
2383 | static void | |
2384 | dwarf2_complex_location_expr_complaint (void) | |
2385 | { | |
2386 | complaint (&symfile_complaints, _("location expression too complex")); | |
2387 | } | |
2388 | ||
2389 | static void | |
2390 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2391 | int arg3) | |
2392 | { | |
2393 | complaint (&symfile_complaints, | |
2394 | _("const value length mismatch for '%s', got %d, expected %d"), | |
2395 | arg1, arg2, arg3); | |
2396 | } | |
2397 | ||
2398 | static void | |
2399 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2400 | { | |
2401 | complaint (&symfile_complaints, | |
2402 | _("debug info runs off end of %s section" | |
2403 | " [in module %s]"), | |
a32a8923 DE |
2404 | get_section_name (section), |
2405 | get_section_file_name (section)); | |
4390d890 | 2406 | } |
1b80a9fa | 2407 | |
4390d890 DE |
2408 | static void |
2409 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2410 | { | |
2411 | complaint (&symfile_complaints, | |
2412 | _("macro debug info contains a " | |
2413 | "malformed macro definition:\n`%s'"), | |
2414 | arg1); | |
2415 | } | |
2416 | ||
2417 | static void | |
2418 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2419 | { | |
2420 | complaint (&symfile_complaints, | |
2421 | _("invalid attribute class or form for '%s' in '%s'"), | |
2422 | arg1, arg2); | |
2423 | } | |
527f3840 JK |
2424 | |
2425 | /* Hash function for line_header_hash. */ | |
2426 | ||
2427 | static hashval_t | |
2428 | line_header_hash (const struct line_header *ofs) | |
2429 | { | |
9c541725 | 2430 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2431 | } |
2432 | ||
2433 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2434 | ||
2435 | static hashval_t | |
2436 | line_header_hash_voidp (const void *item) | |
2437 | { | |
9a3c8263 | 2438 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2439 | |
2440 | return line_header_hash (ofs); | |
2441 | } | |
2442 | ||
2443 | /* Equality function for line_header_hash. */ | |
2444 | ||
2445 | static int | |
2446 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2447 | { | |
9a3c8263 SM |
2448 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2449 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2450 | |
9c541725 | 2451 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2452 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2453 | } | |
2454 | ||
4390d890 | 2455 | \f |
9291a0cd | 2456 | |
31aa7e4e JB |
2457 | /* Read the given attribute value as an address, taking the attribute's |
2458 | form into account. */ | |
2459 | ||
2460 | static CORE_ADDR | |
2461 | attr_value_as_address (struct attribute *attr) | |
2462 | { | |
2463 | CORE_ADDR addr; | |
2464 | ||
2465 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2466 | { | |
2467 | /* Aside from a few clearly defined exceptions, attributes that | |
2468 | contain an address must always be in DW_FORM_addr form. | |
2469 | Unfortunately, some compilers happen to be violating this | |
2470 | requirement by encoding addresses using other forms, such | |
2471 | as DW_FORM_data4 for example. For those broken compilers, | |
2472 | we try to do our best, without any guarantee of success, | |
2473 | to interpret the address correctly. It would also be nice | |
2474 | to generate a complaint, but that would require us to maintain | |
2475 | a list of legitimate cases where a non-address form is allowed, | |
2476 | as well as update callers to pass in at least the CU's DWARF | |
2477 | version. This is more overhead than what we're willing to | |
2478 | expand for a pretty rare case. */ | |
2479 | addr = DW_UNSND (attr); | |
2480 | } | |
2481 | else | |
2482 | addr = DW_ADDR (attr); | |
2483 | ||
2484 | return addr; | |
2485 | } | |
2486 | ||
9291a0cd | 2487 | /* The suffix for an index file. */ |
437afbb8 JK |
2488 | #define INDEX4_SUFFIX ".gdb-index" |
2489 | #define INDEX5_SUFFIX ".debug_names" | |
2490 | #define DEBUG_STR_SUFFIX ".debug_str" | |
9291a0cd | 2491 | |
330cdd98 PA |
2492 | /* See declaration. */ |
2493 | ||
2494 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2495 | const dwarf2_debug_sections *names) | |
2496 | : objfile (objfile_) | |
2497 | { | |
2498 | if (names == NULL) | |
2499 | names = &dwarf2_elf_names; | |
2500 | ||
2501 | bfd *obfd = objfile->obfd; | |
2502 | ||
2503 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2504 | locate_sections (obfd, sec, *names); | |
2505 | } | |
2506 | ||
fc8e7e75 SM |
2507 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2508 | ||
330cdd98 PA |
2509 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2510 | { | |
2511 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2512 | free_cached_comp_units (); | |
2513 | ||
2514 | if (quick_file_names_table) | |
2515 | htab_delete (quick_file_names_table); | |
2516 | ||
2517 | if (line_header_hash) | |
2518 | htab_delete (line_header_hash); | |
2519 | ||
fc8e7e75 SM |
2520 | for (int ix = 0; ix < n_comp_units; ++ix) |
2521 | VEC_free (dwarf2_per_cu_ptr, all_comp_units[ix]->imported_symtabs); | |
2522 | ||
2523 | for (int ix = 0; ix < n_type_units; ++ix) | |
2524 | VEC_free (dwarf2_per_cu_ptr, | |
2525 | all_type_units[ix]->per_cu.imported_symtabs); | |
2526 | xfree (all_type_units); | |
2527 | ||
2528 | VEC_free (dwarf2_section_info_def, types); | |
2529 | ||
2530 | if (dwo_files != NULL) | |
2531 | free_dwo_files (dwo_files, objfile); | |
2532 | if (dwp_file != NULL) | |
2533 | gdb_bfd_unref (dwp_file->dbfd); | |
2534 | ||
2535 | if (dwz_file != NULL && dwz_file->dwz_bfd) | |
2536 | gdb_bfd_unref (dwz_file->dwz_bfd); | |
2537 | ||
2538 | if (index_table != NULL) | |
2539 | index_table->~mapped_index (); | |
2540 | ||
330cdd98 PA |
2541 | /* Everything else should be on the objfile obstack. */ |
2542 | } | |
2543 | ||
2544 | /* See declaration. */ | |
2545 | ||
2546 | void | |
2547 | dwarf2_per_objfile::free_cached_comp_units () | |
2548 | { | |
2549 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2550 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2551 | while (per_cu != NULL) | |
2552 | { | |
2553 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2554 | ||
fcd3b13d | 2555 | delete per_cu->cu; |
330cdd98 PA |
2556 | *last_chain = next_cu; |
2557 | per_cu = next_cu; | |
2558 | } | |
2559 | } | |
2560 | ||
c906108c | 2561 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2562 | information and return true if we have enough to do something. |
2563 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2564 | ELF names are used. */ | |
c906108c SS |
2565 | |
2566 | int | |
251d32d9 TG |
2567 | dwarf2_has_info (struct objfile *objfile, |
2568 | const struct dwarf2_debug_sections *names) | |
c906108c | 2569 | { |
97cbe998 SDJ |
2570 | if (objfile->flags & OBJF_READNEVER) |
2571 | return 0; | |
2572 | ||
ed2dc618 SM |
2573 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2574 | = get_dwarf2_per_objfile (objfile); | |
2575 | ||
2576 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2577 | { |
2578 | /* Initialize per-objfile state. */ | |
fd90ace4 YQ |
2579 | dwarf2_per_objfile |
2580 | = new (&objfile->objfile_obstack) struct dwarf2_per_objfile (objfile, | |
2581 | names); | |
ed2dc618 | 2582 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2583 | } |
73869dc2 | 2584 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2585 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2586 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2587 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2588 | } |
2589 | ||
2590 | /* Return the containing section of virtual section SECTION. */ | |
2591 | ||
2592 | static struct dwarf2_section_info * | |
2593 | get_containing_section (const struct dwarf2_section_info *section) | |
2594 | { | |
2595 | gdb_assert (section->is_virtual); | |
2596 | return section->s.containing_section; | |
c906108c SS |
2597 | } |
2598 | ||
a32a8923 DE |
2599 | /* Return the bfd owner of SECTION. */ |
2600 | ||
2601 | static struct bfd * | |
2602 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2603 | { | |
73869dc2 DE |
2604 | if (section->is_virtual) |
2605 | { | |
2606 | section = get_containing_section (section); | |
2607 | gdb_assert (!section->is_virtual); | |
2608 | } | |
049412e3 | 2609 | return section->s.section->owner; |
a32a8923 DE |
2610 | } |
2611 | ||
2612 | /* Return the bfd section of SECTION. | |
2613 | Returns NULL if the section is not present. */ | |
2614 | ||
2615 | static asection * | |
2616 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2617 | { | |
73869dc2 DE |
2618 | if (section->is_virtual) |
2619 | { | |
2620 | section = get_containing_section (section); | |
2621 | gdb_assert (!section->is_virtual); | |
2622 | } | |
049412e3 | 2623 | return section->s.section; |
a32a8923 DE |
2624 | } |
2625 | ||
2626 | /* Return the name of SECTION. */ | |
2627 | ||
2628 | static const char * | |
2629 | get_section_name (const struct dwarf2_section_info *section) | |
2630 | { | |
2631 | asection *sectp = get_section_bfd_section (section); | |
2632 | ||
2633 | gdb_assert (sectp != NULL); | |
2634 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2635 | } | |
2636 | ||
2637 | /* Return the name of the file SECTION is in. */ | |
2638 | ||
2639 | static const char * | |
2640 | get_section_file_name (const struct dwarf2_section_info *section) | |
2641 | { | |
2642 | bfd *abfd = get_section_bfd_owner (section); | |
2643 | ||
2644 | return bfd_get_filename (abfd); | |
2645 | } | |
2646 | ||
2647 | /* Return the id of SECTION. | |
2648 | Returns 0 if SECTION doesn't exist. */ | |
2649 | ||
2650 | static int | |
2651 | get_section_id (const struct dwarf2_section_info *section) | |
2652 | { | |
2653 | asection *sectp = get_section_bfd_section (section); | |
2654 | ||
2655 | if (sectp == NULL) | |
2656 | return 0; | |
2657 | return sectp->id; | |
2658 | } | |
2659 | ||
2660 | /* Return the flags of SECTION. | |
73869dc2 | 2661 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2662 | |
2663 | static int | |
2664 | get_section_flags (const struct dwarf2_section_info *section) | |
2665 | { | |
2666 | asection *sectp = get_section_bfd_section (section); | |
2667 | ||
2668 | gdb_assert (sectp != NULL); | |
2669 | return bfd_get_section_flags (sectp->owner, sectp); | |
2670 | } | |
2671 | ||
251d32d9 TG |
2672 | /* When loading sections, we look either for uncompressed section or for |
2673 | compressed section names. */ | |
233a11ab CS |
2674 | |
2675 | static int | |
251d32d9 TG |
2676 | section_is_p (const char *section_name, |
2677 | const struct dwarf2_section_names *names) | |
233a11ab | 2678 | { |
251d32d9 TG |
2679 | if (names->normal != NULL |
2680 | && strcmp (section_name, names->normal) == 0) | |
2681 | return 1; | |
2682 | if (names->compressed != NULL | |
2683 | && strcmp (section_name, names->compressed) == 0) | |
2684 | return 1; | |
2685 | return 0; | |
233a11ab CS |
2686 | } |
2687 | ||
330cdd98 | 2688 | /* See declaration. */ |
c906108c | 2689 | |
330cdd98 PA |
2690 | void |
2691 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2692 | const dwarf2_debug_sections &names) | |
c906108c | 2693 | { |
dc7650b8 | 2694 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2695 | |
dc7650b8 JK |
2696 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2697 | { | |
2698 | } | |
330cdd98 | 2699 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2700 | { |
330cdd98 PA |
2701 | this->info.s.section = sectp; |
2702 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2703 | } |
330cdd98 | 2704 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2705 | { |
330cdd98 PA |
2706 | this->abbrev.s.section = sectp; |
2707 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2708 | } |
330cdd98 | 2709 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2710 | { |
330cdd98 PA |
2711 | this->line.s.section = sectp; |
2712 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2713 | } |
330cdd98 | 2714 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2715 | { |
330cdd98 PA |
2716 | this->loc.s.section = sectp; |
2717 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2718 | } |
330cdd98 | 2719 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2720 | { |
330cdd98 PA |
2721 | this->loclists.s.section = sectp; |
2722 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2723 | } |
330cdd98 | 2724 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2725 | { |
330cdd98 PA |
2726 | this->macinfo.s.section = sectp; |
2727 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2728 | } |
330cdd98 | 2729 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2730 | { |
330cdd98 PA |
2731 | this->macro.s.section = sectp; |
2732 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2733 | } |
330cdd98 | 2734 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2735 | { |
330cdd98 PA |
2736 | this->str.s.section = sectp; |
2737 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2738 | } |
330cdd98 | 2739 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2740 | { |
330cdd98 PA |
2741 | this->line_str.s.section = sectp; |
2742 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2743 | } |
330cdd98 | 2744 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2745 | { |
330cdd98 PA |
2746 | this->addr.s.section = sectp; |
2747 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2748 | } |
330cdd98 | 2749 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2750 | { |
330cdd98 PA |
2751 | this->frame.s.section = sectp; |
2752 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2753 | } |
330cdd98 | 2754 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2755 | { |
330cdd98 PA |
2756 | this->eh_frame.s.section = sectp; |
2757 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2758 | } |
330cdd98 | 2759 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2760 | { |
330cdd98 PA |
2761 | this->ranges.s.section = sectp; |
2762 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2763 | } |
330cdd98 | 2764 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2765 | { |
330cdd98 PA |
2766 | this->rnglists.s.section = sectp; |
2767 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2768 | } |
330cdd98 | 2769 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2770 | { |
8b70b953 TT |
2771 | struct dwarf2_section_info type_section; |
2772 | ||
2773 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2774 | type_section.s.section = sectp; |
8b70b953 TT |
2775 | type_section.size = bfd_get_section_size (sectp); |
2776 | ||
330cdd98 | 2777 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2778 | &type_section); |
348e048f | 2779 | } |
330cdd98 | 2780 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2781 | { |
330cdd98 PA |
2782 | this->gdb_index.s.section = sectp; |
2783 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2784 | } |
927aa2e7 JK |
2785 | else if (section_is_p (sectp->name, &names.debug_names)) |
2786 | { | |
2787 | this->debug_names.s.section = sectp; | |
2788 | this->debug_names.size = bfd_get_section_size (sectp); | |
2789 | } | |
2790 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2791 | { | |
2792 | this->debug_aranges.s.section = sectp; | |
2793 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2794 | } | |
dce234bc | 2795 | |
b4e1fd61 | 2796 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2797 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2798 | this->has_section_at_zero = true; |
c906108c SS |
2799 | } |
2800 | ||
fceca515 DE |
2801 | /* A helper function that decides whether a section is empty, |
2802 | or not present. */ | |
9e0ac564 TT |
2803 | |
2804 | static int | |
19ac8c2e | 2805 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2806 | { |
73869dc2 DE |
2807 | if (section->is_virtual) |
2808 | return section->size == 0; | |
049412e3 | 2809 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2810 | } |
2811 | ||
3019eac3 DE |
2812 | /* Read the contents of the section INFO. |
2813 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2814 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2815 | of the DWO file. | |
dce234bc | 2816 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2817 | |
dce234bc PP |
2818 | static void |
2819 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2820 | { |
a32a8923 | 2821 | asection *sectp; |
3019eac3 | 2822 | bfd *abfd; |
dce234bc | 2823 | gdb_byte *buf, *retbuf; |
c906108c | 2824 | |
be391dca TT |
2825 | if (info->readin) |
2826 | return; | |
dce234bc | 2827 | info->buffer = NULL; |
be391dca | 2828 | info->readin = 1; |
188dd5d6 | 2829 | |
9e0ac564 | 2830 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2831 | return; |
c906108c | 2832 | |
a32a8923 | 2833 | sectp = get_section_bfd_section (info); |
3019eac3 | 2834 | |
73869dc2 DE |
2835 | /* If this is a virtual section we need to read in the real one first. */ |
2836 | if (info->is_virtual) | |
2837 | { | |
2838 | struct dwarf2_section_info *containing_section = | |
2839 | get_containing_section (info); | |
2840 | ||
2841 | gdb_assert (sectp != NULL); | |
2842 | if ((sectp->flags & SEC_RELOC) != 0) | |
2843 | { | |
2844 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2845 | " supported in section %s [in module %s]"), | |
2846 | get_section_name (info), get_section_file_name (info)); | |
2847 | } | |
2848 | dwarf2_read_section (objfile, containing_section); | |
2849 | /* Other code should have already caught virtual sections that don't | |
2850 | fit. */ | |
2851 | gdb_assert (info->virtual_offset + info->size | |
2852 | <= containing_section->size); | |
2853 | /* If the real section is empty or there was a problem reading the | |
2854 | section we shouldn't get here. */ | |
2855 | gdb_assert (containing_section->buffer != NULL); | |
2856 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2857 | return; | |
2858 | } | |
2859 | ||
4bf44c1c TT |
2860 | /* If the section has relocations, we must read it ourselves. |
2861 | Otherwise we attach it to the BFD. */ | |
2862 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2863 | { |
d521ce57 | 2864 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2865 | return; |
dce234bc | 2866 | } |
dce234bc | 2867 | |
224c3ddb | 2868 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2869 | info->buffer = buf; |
dce234bc PP |
2870 | |
2871 | /* When debugging .o files, we may need to apply relocations; see | |
2872 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2873 | We never compress sections in .o files, so we only need to | |
2874 | try this when the section is not compressed. */ | |
ac8035ab | 2875 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2876 | if (retbuf != NULL) |
2877 | { | |
2878 | info->buffer = retbuf; | |
2879 | return; | |
2880 | } | |
2881 | ||
a32a8923 DE |
2882 | abfd = get_section_bfd_owner (info); |
2883 | gdb_assert (abfd != NULL); | |
2884 | ||
dce234bc PP |
2885 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2886 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2887 | { |
2888 | error (_("Dwarf Error: Can't read DWARF data" | |
2889 | " in section %s [in module %s]"), | |
2890 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2891 | } | |
dce234bc PP |
2892 | } |
2893 | ||
9e0ac564 TT |
2894 | /* A helper function that returns the size of a section in a safe way. |
2895 | If you are positive that the section has been read before using the | |
2896 | size, then it is safe to refer to the dwarf2_section_info object's | |
2897 | "size" field directly. In other cases, you must call this | |
2898 | function, because for compressed sections the size field is not set | |
2899 | correctly until the section has been read. */ | |
2900 | ||
2901 | static bfd_size_type | |
2902 | dwarf2_section_size (struct objfile *objfile, | |
2903 | struct dwarf2_section_info *info) | |
2904 | { | |
2905 | if (!info->readin) | |
2906 | dwarf2_read_section (objfile, info); | |
2907 | return info->size; | |
2908 | } | |
2909 | ||
dce234bc | 2910 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2911 | SECTION_NAME. */ |
af34e669 | 2912 | |
dce234bc | 2913 | void |
3017a003 TG |
2914 | dwarf2_get_section_info (struct objfile *objfile, |
2915 | enum dwarf2_section_enum sect, | |
d521ce57 | 2916 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2917 | bfd_size_type *sizep) |
2918 | { | |
2919 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2920 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2921 | dwarf2_objfile_data_key); | |
dce234bc | 2922 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2923 | |
2924 | /* We may see an objfile without any DWARF, in which case we just | |
2925 | return nothing. */ | |
2926 | if (data == NULL) | |
2927 | { | |
2928 | *sectp = NULL; | |
2929 | *bufp = NULL; | |
2930 | *sizep = 0; | |
2931 | return; | |
2932 | } | |
3017a003 TG |
2933 | switch (sect) |
2934 | { | |
2935 | case DWARF2_DEBUG_FRAME: | |
2936 | info = &data->frame; | |
2937 | break; | |
2938 | case DWARF2_EH_FRAME: | |
2939 | info = &data->eh_frame; | |
2940 | break; | |
2941 | default: | |
2942 | gdb_assert_not_reached ("unexpected section"); | |
2943 | } | |
dce234bc | 2944 | |
9e0ac564 | 2945 | dwarf2_read_section (objfile, info); |
dce234bc | 2946 | |
a32a8923 | 2947 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2948 | *bufp = info->buffer; |
2949 | *sizep = info->size; | |
2950 | } | |
2951 | ||
36586728 TT |
2952 | /* A helper function to find the sections for a .dwz file. */ |
2953 | ||
2954 | static void | |
2955 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2956 | { | |
9a3c8263 | 2957 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2958 | |
2959 | /* Note that we only support the standard ELF names, because .dwz | |
2960 | is ELF-only (at the time of writing). */ | |
2961 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2962 | { | |
049412e3 | 2963 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2964 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2965 | } | |
2966 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2967 | { | |
049412e3 | 2968 | dwz_file->info.s.section = sectp; |
36586728 TT |
2969 | dwz_file->info.size = bfd_get_section_size (sectp); |
2970 | } | |
2971 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2972 | { | |
049412e3 | 2973 | dwz_file->str.s.section = sectp; |
36586728 TT |
2974 | dwz_file->str.size = bfd_get_section_size (sectp); |
2975 | } | |
2976 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2977 | { | |
049412e3 | 2978 | dwz_file->line.s.section = sectp; |
36586728 TT |
2979 | dwz_file->line.size = bfd_get_section_size (sectp); |
2980 | } | |
2981 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2982 | { | |
049412e3 | 2983 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2984 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2985 | } | |
2ec9a5e0 TT |
2986 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2987 | { | |
049412e3 | 2988 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2989 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2990 | } | |
927aa2e7 JK |
2991 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2992 | { | |
2993 | dwz_file->debug_names.s.section = sectp; | |
2994 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2995 | } | |
36586728 TT |
2996 | } |
2997 | ||
4db1a1dc TT |
2998 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2999 | there is no .gnu_debugaltlink section in the file. Error if there | |
3000 | is such a section but the file cannot be found. */ | |
36586728 TT |
3001 | |
3002 | static struct dwz_file * | |
ed2dc618 | 3003 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 3004 | { |
36586728 TT |
3005 | const char *filename; |
3006 | struct dwz_file *result; | |
acd13123 | 3007 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
3008 | size_t buildid_len; |
3009 | bfd_byte *buildid; | |
36586728 TT |
3010 | |
3011 | if (dwarf2_per_objfile->dwz_file != NULL) | |
3012 | return dwarf2_per_objfile->dwz_file; | |
3013 | ||
4db1a1dc | 3014 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
3015 | gdb::unique_xmalloc_ptr<char> data |
3016 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
3017 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
3018 | if (data == NULL) |
3019 | { | |
3020 | if (bfd_get_error () == bfd_error_no_error) | |
3021 | return NULL; | |
3022 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
3023 | bfd_errmsg (bfd_get_error ())); | |
3024 | } | |
791afaa2 TT |
3025 | |
3026 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 3027 | |
acd13123 TT |
3028 | buildid_len = (size_t) buildid_len_arg; |
3029 | ||
791afaa2 | 3030 | filename = data.get (); |
d721ba37 PA |
3031 | |
3032 | std::string abs_storage; | |
36586728 TT |
3033 | if (!IS_ABSOLUTE_PATH (filename)) |
3034 | { | |
14278e1f TT |
3035 | gdb::unique_xmalloc_ptr<char> abs |
3036 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 3037 | |
14278e1f | 3038 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 3039 | filename = abs_storage.c_str (); |
36586728 TT |
3040 | } |
3041 | ||
dc294be5 TT |
3042 | /* First try the file name given in the section. If that doesn't |
3043 | work, try to use the build-id instead. */ | |
192b62ce | 3044 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 3045 | if (dwz_bfd != NULL) |
36586728 | 3046 | { |
192b62ce TT |
3047 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
3048 | dwz_bfd.release (); | |
36586728 TT |
3049 | } |
3050 | ||
dc294be5 TT |
3051 | if (dwz_bfd == NULL) |
3052 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
3053 | ||
3054 | if (dwz_bfd == NULL) | |
3055 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
3056 | objfile_name (dwarf2_per_objfile->objfile)); | |
3057 | ||
36586728 TT |
3058 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
3059 | struct dwz_file); | |
192b62ce | 3060 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 3061 | |
192b62ce | 3062 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 | 3063 | |
192b62ce | 3064 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 3065 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
3066 | return result; |
3067 | } | |
9291a0cd | 3068 | \f |
7b9f3c50 DE |
3069 | /* DWARF quick_symbols_functions support. */ |
3070 | ||
3071 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
3072 | unique line tables, so we maintain a separate table of all .debug_line | |
3073 | derived entries to support the sharing. | |
3074 | All the quick functions need is the list of file names. We discard the | |
3075 | line_header when we're done and don't need to record it here. */ | |
3076 | struct quick_file_names | |
3077 | { | |
094b34ac DE |
3078 | /* The data used to construct the hash key. */ |
3079 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
3080 | |
3081 | /* The number of entries in file_names, real_names. */ | |
3082 | unsigned int num_file_names; | |
3083 | ||
3084 | /* The file names from the line table, after being run through | |
3085 | file_full_name. */ | |
3086 | const char **file_names; | |
3087 | ||
3088 | /* The file names from the line table after being run through | |
3089 | gdb_realpath. These are computed lazily. */ | |
3090 | const char **real_names; | |
3091 | }; | |
3092 | ||
3093 | /* When using the index (and thus not using psymtabs), each CU has an | |
3094 | object of this type. This is used to hold information needed by | |
3095 | the various "quick" methods. */ | |
3096 | struct dwarf2_per_cu_quick_data | |
3097 | { | |
3098 | /* The file table. This can be NULL if there was no file table | |
3099 | or it's currently not read in. | |
3100 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
3101 | struct quick_file_names *file_names; | |
3102 | ||
3103 | /* The corresponding symbol table. This is NULL if symbols for this | |
3104 | CU have not yet been read. */ | |
43f3e411 | 3105 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
3106 | |
3107 | /* A temporary mark bit used when iterating over all CUs in | |
3108 | expand_symtabs_matching. */ | |
3109 | unsigned int mark : 1; | |
3110 | ||
3111 | /* True if we've tried to read the file table and found there isn't one. | |
3112 | There will be no point in trying to read it again next time. */ | |
3113 | unsigned int no_file_data : 1; | |
3114 | }; | |
3115 | ||
094b34ac DE |
3116 | /* Utility hash function for a stmt_list_hash. */ |
3117 | ||
3118 | static hashval_t | |
3119 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
3120 | { | |
3121 | hashval_t v = 0; | |
3122 | ||
3123 | if (stmt_list_hash->dwo_unit != NULL) | |
3124 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 3125 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
3126 | return v; |
3127 | } | |
3128 | ||
3129 | /* Utility equality function for a stmt_list_hash. */ | |
3130 | ||
3131 | static int | |
3132 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
3133 | const struct stmt_list_hash *rhs) | |
3134 | { | |
3135 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
3136 | return 0; | |
3137 | if (lhs->dwo_unit != NULL | |
3138 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
3139 | return 0; | |
3140 | ||
9c541725 | 3141 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
3142 | } |
3143 | ||
7b9f3c50 DE |
3144 | /* Hash function for a quick_file_names. */ |
3145 | ||
3146 | static hashval_t | |
3147 | hash_file_name_entry (const void *e) | |
3148 | { | |
9a3c8263 SM |
3149 | const struct quick_file_names *file_data |
3150 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 3151 | |
094b34ac | 3152 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
3153 | } |
3154 | ||
3155 | /* Equality function for a quick_file_names. */ | |
3156 | ||
3157 | static int | |
3158 | eq_file_name_entry (const void *a, const void *b) | |
3159 | { | |
9a3c8263 SM |
3160 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
3161 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 3162 | |
094b34ac | 3163 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
3164 | } |
3165 | ||
3166 | /* Delete function for a quick_file_names. */ | |
3167 | ||
3168 | static void | |
3169 | delete_file_name_entry (void *e) | |
3170 | { | |
9a3c8263 | 3171 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
3172 | int i; |
3173 | ||
3174 | for (i = 0; i < file_data->num_file_names; ++i) | |
3175 | { | |
3176 | xfree ((void*) file_data->file_names[i]); | |
3177 | if (file_data->real_names) | |
3178 | xfree ((void*) file_data->real_names[i]); | |
3179 | } | |
3180 | ||
3181 | /* The space for the struct itself lives on objfile_obstack, | |
3182 | so we don't free it here. */ | |
3183 | } | |
3184 | ||
3185 | /* Create a quick_file_names hash table. */ | |
3186 | ||
3187 | static htab_t | |
3188 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
3189 | { | |
3190 | return htab_create_alloc (nr_initial_entries, | |
3191 | hash_file_name_entry, eq_file_name_entry, | |
3192 | delete_file_name_entry, xcalloc, xfree); | |
3193 | } | |
9291a0cd | 3194 | |
918dd910 JK |
3195 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
3196 | have to be created afterwards. You should call age_cached_comp_units after | |
3197 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
3198 | ||
3199 | static void | |
3200 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
3201 | { | |
3019eac3 | 3202 | if (per_cu->is_debug_types) |
e5fe5e75 | 3203 | load_full_type_unit (per_cu); |
918dd910 | 3204 | else |
95554aad | 3205 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 3206 | |
cc12ce38 DE |
3207 | if (per_cu->cu == NULL) |
3208 | return; /* Dummy CU. */ | |
2dc860c0 DE |
3209 | |
3210 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
3211 | } |
3212 | ||
a0f42c21 | 3213 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 3214 | |
9291a0cd | 3215 | static void |
a0f42c21 | 3216 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3217 | { |
ed2dc618 | 3218 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 3219 | |
f4dc4d17 DE |
3220 | /* Skip type_unit_groups, reading the type units they contain |
3221 | is handled elsewhere. */ | |
3222 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
3223 | return; | |
3224 | ||
b303c6f6 AB |
3225 | /* The destructor of dwarf2_queue_guard frees any entries left on |
3226 | the queue. After this point we're guaranteed to leave this function | |
3227 | with the dwarf queue empty. */ | |
3228 | dwarf2_queue_guard q_guard; | |
9291a0cd | 3229 | |
95554aad | 3230 | if (dwarf2_per_objfile->using_index |
43f3e411 | 3231 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
3232 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
3233 | { | |
3234 | queue_comp_unit (per_cu, language_minimal); | |
3235 | load_cu (per_cu); | |
89e63ee4 DE |
3236 | |
3237 | /* If we just loaded a CU from a DWO, and we're working with an index | |
3238 | that may badly handle TUs, load all the TUs in that DWO as well. | |
3239 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
3240 | if (!per_cu->is_debug_types | |
cc12ce38 | 3241 | && per_cu->cu != NULL |
89e63ee4 DE |
3242 | && per_cu->cu->dwo_unit != NULL |
3243 | && dwarf2_per_objfile->index_table != NULL | |
3244 | && dwarf2_per_objfile->index_table->version <= 7 | |
3245 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 3246 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 3247 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 3248 | } |
9291a0cd | 3249 | |
ed2dc618 | 3250 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
3251 | |
3252 | /* Age the cache, releasing compilation units that have not | |
3253 | been used recently. */ | |
ed2dc618 | 3254 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
3255 | } |
3256 | ||
3257 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
3258 | the objfile from which this CU came. Returns the resulting symbol | |
3259 | table. */ | |
2fdf6df6 | 3260 | |
43f3e411 | 3261 | static struct compunit_symtab * |
a0f42c21 | 3262 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3263 | { |
ed2dc618 SM |
3264 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3265 | ||
95554aad | 3266 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 3267 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 3268 | { |
ed2dc618 SM |
3269 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, |
3270 | dwarf2_per_objfile); | |
c83dd867 | 3271 | scoped_restore decrementer = increment_reading_symtab (); |
a0f42c21 | 3272 | dw2_do_instantiate_symtab (per_cu); |
ed2dc618 | 3273 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd TT |
3274 | do_cleanups (back_to); |
3275 | } | |
f194fefb | 3276 | |
43f3e411 | 3277 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
3278 | } |
3279 | ||
8832e7e3 | 3280 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
3281 | |
3282 | This is intended for loops like: | |
3283 | ||
3284 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3285 | + dwarf2_per_objfile->n_type_units); ++i) | |
3286 | { | |
8832e7e3 | 3287 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
3288 | |
3289 | ...; | |
3290 | } | |
3291 | */ | |
2fdf6df6 | 3292 | |
1fd400ff | 3293 | static struct dwarf2_per_cu_data * |
ed2dc618 SM |
3294 | dw2_get_cutu (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3295 | int index) | |
1fd400ff TT |
3296 | { |
3297 | if (index >= dwarf2_per_objfile->n_comp_units) | |
3298 | { | |
f4dc4d17 | 3299 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
3300 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
3301 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
3302 | } |
3303 | ||
3304 | return dwarf2_per_objfile->all_comp_units[index]; | |
3305 | } | |
3306 | ||
8832e7e3 DE |
3307 | /* Return the CU given its index. |
3308 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
3309 | refers to a CU. */ | |
f4dc4d17 DE |
3310 | |
3311 | static struct dwarf2_per_cu_data * | |
ed2dc618 | 3312 | dw2_get_cu (struct dwarf2_per_objfile *dwarf2_per_objfile, int index) |
f4dc4d17 | 3313 | { |
8832e7e3 | 3314 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 3315 | |
1fd400ff TT |
3316 | return dwarf2_per_objfile->all_comp_units[index]; |
3317 | } | |
3318 | ||
4b514bc8 JK |
3319 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
3320 | objfile_obstack, and constructed with the specified field | |
3321 | values. */ | |
3322 | ||
3323 | static dwarf2_per_cu_data * | |
ed2dc618 | 3324 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
3325 | struct dwarf2_section_info *section, |
3326 | int is_dwz, | |
3327 | sect_offset sect_off, ULONGEST length) | |
3328 | { | |
ed2dc618 | 3329 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
3330 | dwarf2_per_cu_data *the_cu |
3331 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3332 | struct dwarf2_per_cu_data); | |
3333 | the_cu->sect_off = sect_off; | |
3334 | the_cu->length = length; | |
e3b94546 | 3335 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
3336 | the_cu->section = section; |
3337 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3338 | struct dwarf2_per_cu_quick_data); | |
3339 | the_cu->is_dwz = is_dwz; | |
3340 | return the_cu; | |
3341 | } | |
3342 | ||
2ec9a5e0 TT |
3343 | /* A helper for create_cus_from_index that handles a given list of |
3344 | CUs. */ | |
2fdf6df6 | 3345 | |
74a0d9f6 | 3346 | static void |
2ec9a5e0 TT |
3347 | create_cus_from_index_list (struct objfile *objfile, |
3348 | const gdb_byte *cu_list, offset_type n_elements, | |
3349 | struct dwarf2_section_info *section, | |
3350 | int is_dwz, | |
3351 | int base_offset) | |
9291a0cd TT |
3352 | { |
3353 | offset_type i; | |
ed2dc618 SM |
3354 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3355 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3356 | |
2ec9a5e0 | 3357 | for (i = 0; i < n_elements; i += 2) |
9291a0cd | 3358 | { |
74a0d9f6 | 3359 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3360 | |
3361 | sect_offset sect_off | |
3362 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3363 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3364 | cu_list += 2 * 8; |
3365 | ||
4b514bc8 | 3366 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] |
ed2dc618 SM |
3367 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3368 | sect_off, length); | |
9291a0cd | 3369 | } |
9291a0cd TT |
3370 | } |
3371 | ||
2ec9a5e0 | 3372 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3373 | the CU objects for this objfile. */ |
2ec9a5e0 | 3374 | |
74a0d9f6 | 3375 | static void |
2ec9a5e0 TT |
3376 | create_cus_from_index (struct objfile *objfile, |
3377 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
3378 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3379 | { | |
3380 | struct dwz_file *dwz; | |
ed2dc618 SM |
3381 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3382 | = get_dwarf2_per_objfile (objfile); | |
2ec9a5e0 TT |
3383 | |
3384 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
3385 | dwarf2_per_objfile->all_comp_units = |
3386 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
3387 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 3388 | |
74a0d9f6 JK |
3389 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
3390 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
3391 | |
3392 | if (dwz_elements == 0) | |
74a0d9f6 | 3393 | return; |
2ec9a5e0 | 3394 | |
ed2dc618 | 3395 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
74a0d9f6 JK |
3396 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
3397 | cu_list_elements / 2); | |
2ec9a5e0 TT |
3398 | } |
3399 | ||
1fd400ff | 3400 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3401 | |
74a0d9f6 | 3402 | static void |
673bfd45 | 3403 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 3404 | struct dwarf2_section_info *section, |
673bfd45 DE |
3405 | const gdb_byte *bytes, |
3406 | offset_type elements) | |
1fd400ff TT |
3407 | { |
3408 | offset_type i; | |
673bfd45 | 3409 | htab_t sig_types_hash; |
ed2dc618 SM |
3410 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3411 | = get_dwarf2_per_objfile (objfile); | |
1fd400ff | 3412 | |
6aa5f3a6 DE |
3413 | dwarf2_per_objfile->n_type_units |
3414 | = dwarf2_per_objfile->n_allocated_type_units | |
3415 | = elements / 3; | |
8d749320 SM |
3416 | dwarf2_per_objfile->all_type_units = |
3417 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3418 | |
673bfd45 | 3419 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
3420 | |
3421 | for (i = 0; i < elements; i += 3) | |
3422 | { | |
52dc124a | 3423 | struct signatured_type *sig_type; |
9c541725 | 3424 | ULONGEST signature; |
1fd400ff | 3425 | void **slot; |
9c541725 | 3426 | cu_offset type_offset_in_tu; |
1fd400ff | 3427 | |
74a0d9f6 | 3428 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3429 | sect_offset sect_off |
3430 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3431 | type_offset_in_tu | |
3432 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3433 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3434 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3435 | bytes += 3 * 8; | |
3436 | ||
52dc124a | 3437 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3438 | struct signatured_type); |
52dc124a | 3439 | sig_type->signature = signature; |
9c541725 | 3440 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3441 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3442 | sig_type->per_cu.section = section; |
9c541725 | 3443 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3444 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3445 | sig_type->per_cu.v.quick |
1fd400ff TT |
3446 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3447 | struct dwarf2_per_cu_quick_data); | |
3448 | ||
52dc124a DE |
3449 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3450 | *slot = sig_type; | |
1fd400ff | 3451 | |
b4dd5633 | 3452 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
3453 | } |
3454 | ||
673bfd45 | 3455 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3456 | } |
3457 | ||
927aa2e7 JK |
3458 | /* Create the signatured type hash table from .debug_names. */ |
3459 | ||
3460 | static void | |
3461 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3462 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3463 | const mapped_debug_names &map, |
3464 | struct dwarf2_section_info *section, | |
3465 | struct dwarf2_section_info *abbrev_section) | |
3466 | { | |
ed2dc618 SM |
3467 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3468 | ||
927aa2e7 JK |
3469 | dwarf2_read_section (objfile, section); |
3470 | dwarf2_read_section (objfile, abbrev_section); | |
3471 | ||
3472 | dwarf2_per_objfile->n_type_units | |
3473 | = dwarf2_per_objfile->n_allocated_type_units | |
3474 | = map.tu_count; | |
3475 | dwarf2_per_objfile->all_type_units | |
3476 | = XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
3477 | ||
3478 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3479 | ||
3480 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3481 | { | |
3482 | struct signatured_type *sig_type; | |
3483 | ULONGEST signature; | |
3484 | void **slot; | |
3485 | cu_offset type_offset_in_tu; | |
3486 | ||
3487 | sect_offset sect_off | |
3488 | = (sect_offset) (extract_unsigned_integer | |
3489 | (map.tu_table_reordered + i * map.offset_size, | |
3490 | map.offset_size, | |
3491 | map.dwarf5_byte_order)); | |
3492 | ||
3493 | comp_unit_head cu_header; | |
ed2dc618 SM |
3494 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3495 | abbrev_section, | |
927aa2e7 JK |
3496 | section->buffer + to_underlying (sect_off), |
3497 | rcuh_kind::TYPE); | |
3498 | ||
3499 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3500 | struct signatured_type); | |
3501 | sig_type->signature = cu_header.signature; | |
3502 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3503 | sig_type->per_cu.is_debug_types = 1; | |
3504 | sig_type->per_cu.section = section; | |
3505 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3506 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3507 | sig_type->per_cu.v.quick |
3508 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3509 | struct dwarf2_per_cu_quick_data); | |
3510 | ||
3511 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3512 | *slot = sig_type; | |
3513 | ||
3514 | dwarf2_per_objfile->all_type_units[i] = sig_type; | |
3515 | } | |
3516 | ||
3517 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3518 | } | |
3519 | ||
9291a0cd TT |
3520 | /* Read the address map data from the mapped index, and use it to |
3521 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3522 | |
9291a0cd | 3523 | static void |
ed2dc618 SM |
3524 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3525 | struct mapped_index *index) | |
9291a0cd | 3526 | { |
ed2dc618 | 3527 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3528 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3529 | const gdb_byte *iter, *end; |
9291a0cd | 3530 | struct addrmap *mutable_map; |
9291a0cd TT |
3531 | CORE_ADDR baseaddr; |
3532 | ||
8268c778 PA |
3533 | auto_obstack temp_obstack; |
3534 | ||
9291a0cd TT |
3535 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3536 | ||
f00a2de2 PA |
3537 | iter = index->address_table.data (); |
3538 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3539 | |
3540 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3541 | ||
3542 | while (iter < end) | |
3543 | { | |
3544 | ULONGEST hi, lo, cu_index; | |
3545 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3546 | iter += 8; | |
3547 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3548 | iter += 8; | |
3549 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3550 | iter += 4; | |
f652bce2 | 3551 | |
24a55014 | 3552 | if (lo > hi) |
f652bce2 | 3553 | { |
24a55014 DE |
3554 | complaint (&symfile_complaints, |
3555 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 3556 | hex_string (lo), hex_string (hi)); |
24a55014 | 3557 | continue; |
f652bce2 | 3558 | } |
24a55014 DE |
3559 | |
3560 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
3561 | { |
3562 | complaint (&symfile_complaints, | |
3563 | _(".gdb_index address table has invalid CU number %u"), | |
3564 | (unsigned) cu_index); | |
24a55014 | 3565 | continue; |
f652bce2 | 3566 | } |
24a55014 | 3567 | |
3e29f34a MR |
3568 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3569 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
ed2dc618 SM |
3570 | addrmap_set_empty (mutable_map, lo, hi - 1, |
3571 | dw2_get_cutu (dwarf2_per_objfile, cu_index)); | |
9291a0cd TT |
3572 | } |
3573 | ||
3574 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3575 | &objfile->objfile_obstack); | |
9291a0cd TT |
3576 | } |
3577 | ||
927aa2e7 JK |
3578 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3579 | populate the objfile's psymtabs_addrmap. */ | |
3580 | ||
3581 | static void | |
ed2dc618 | 3582 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3583 | struct dwarf2_section_info *section) |
3584 | { | |
ed2dc618 | 3585 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3586 | bfd *abfd = objfile->obfd; |
3587 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3588 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3589 | SECT_OFF_TEXT (objfile)); | |
3590 | ||
3591 | auto_obstack temp_obstack; | |
3592 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3593 | ||
3594 | std::unordered_map<sect_offset, | |
3595 | dwarf2_per_cu_data *, | |
3596 | gdb::hash_enum<sect_offset>> | |
3597 | debug_info_offset_to_per_cu; | |
3598 | for (int cui = 0; cui < dwarf2_per_objfile->n_comp_units; ++cui) | |
3599 | { | |
ed2dc618 | 3600 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, cui); |
927aa2e7 JK |
3601 | const auto insertpair |
3602 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3603 | if (!insertpair.second) | |
3604 | { | |
3605 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3606 | "debug_info_offset %s, ignoring .debug_aranges."), |
3607 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3608 | return; |
3609 | } | |
3610 | } | |
3611 | ||
3612 | dwarf2_read_section (objfile, section); | |
3613 | ||
3614 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3615 | ||
3616 | const gdb_byte *addr = section->buffer; | |
3617 | ||
3618 | while (addr < section->buffer + section->size) | |
3619 | { | |
3620 | const gdb_byte *const entry_addr = addr; | |
3621 | unsigned int bytes_read; | |
3622 | ||
3623 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3624 | &bytes_read); | |
3625 | addr += bytes_read; | |
3626 | ||
3627 | const gdb_byte *const entry_end = addr + entry_length; | |
3628 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3629 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3630 | if (addr + entry_length > section->buffer + section->size) | |
3631 | { | |
3632 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3633 | "length %s exceeds section length %s, " | |
3634 | "ignoring .debug_aranges."), | |
3635 | objfile_name (objfile), entry_addr - section->buffer, | |
3636 | plongest (bytes_read + entry_length), | |
3637 | pulongest (section->size)); | |
3638 | return; | |
3639 | } | |
3640 | ||
3641 | /* The version number. */ | |
3642 | const uint16_t version = read_2_bytes (abfd, addr); | |
3643 | addr += 2; | |
3644 | if (version != 2) | |
3645 | { | |
3646 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3647 | "has unsupported version %d, ignoring .debug_aranges."), | |
3648 | objfile_name (objfile), entry_addr - section->buffer, | |
3649 | version); | |
3650 | return; | |
3651 | } | |
3652 | ||
3653 | const uint64_t debug_info_offset | |
3654 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3655 | addr += offset_size; | |
3656 | const auto per_cu_it | |
3657 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3658 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3659 | { | |
3660 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3661 | "debug_info_offset %s does not exists, " | |
3662 | "ignoring .debug_aranges."), | |
3663 | objfile_name (objfile), entry_addr - section->buffer, | |
3664 | pulongest (debug_info_offset)); | |
3665 | return; | |
3666 | } | |
3667 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3668 | ||
3669 | const uint8_t address_size = *addr++; | |
3670 | if (address_size < 1 || address_size > 8) | |
3671 | { | |
3672 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3673 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3674 | objfile_name (objfile), entry_addr - section->buffer, | |
3675 | address_size); | |
3676 | return; | |
3677 | } | |
3678 | ||
3679 | const uint8_t segment_selector_size = *addr++; | |
3680 | if (segment_selector_size != 0) | |
3681 | { | |
3682 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3683 | "segment_selector_size %u is not supported, " | |
3684 | "ignoring .debug_aranges."), | |
3685 | objfile_name (objfile), entry_addr - section->buffer, | |
3686 | segment_selector_size); | |
3687 | return; | |
3688 | } | |
3689 | ||
3690 | /* Must pad to an alignment boundary that is twice the address | |
3691 | size. It is undocumented by the DWARF standard but GCC does | |
3692 | use it. */ | |
3693 | for (size_t padding = ((-(addr - section->buffer)) | |
3694 | & (2 * address_size - 1)); | |
3695 | padding > 0; padding--) | |
3696 | if (*addr++ != 0) | |
3697 | { | |
3698 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3699 | "padding is not zero, ignoring .debug_aranges."), | |
3700 | objfile_name (objfile), entry_addr - section->buffer); | |
3701 | return; | |
3702 | } | |
3703 | ||
3704 | for (;;) | |
3705 | { | |
3706 | if (addr + 2 * address_size > entry_end) | |
3707 | { | |
3708 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3709 | "address list is not properly terminated, " | |
3710 | "ignoring .debug_aranges."), | |
3711 | objfile_name (objfile), entry_addr - section->buffer); | |
3712 | return; | |
3713 | } | |
3714 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3715 | dwarf5_byte_order); | |
3716 | addr += address_size; | |
3717 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3718 | dwarf5_byte_order); | |
3719 | addr += address_size; | |
3720 | if (start == 0 && length == 0) | |
3721 | break; | |
3722 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3723 | { | |
3724 | /* Symbol was eliminated due to a COMDAT group. */ | |
3725 | continue; | |
3726 | } | |
3727 | ULONGEST end = start + length; | |
3728 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr); | |
3729 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr); | |
3730 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); | |
3731 | } | |
3732 | } | |
3733 | ||
3734 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3735 | &objfile->objfile_obstack); | |
3736 | } | |
3737 | ||
59d7bcaf JK |
3738 | /* The hash function for strings in the mapped index. This is the same as |
3739 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3740 | implementation. This is necessary because the hash function is tied to the | |
3741 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3742 | SYMBOL_HASH_NEXT. |
3743 | ||
3744 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3745 | |
9291a0cd | 3746 | static hashval_t |
559a7a62 | 3747 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3748 | { |
3749 | const unsigned char *str = (const unsigned char *) p; | |
3750 | hashval_t r = 0; | |
3751 | unsigned char c; | |
3752 | ||
3753 | while ((c = *str++) != 0) | |
559a7a62 JK |
3754 | { |
3755 | if (index_version >= 5) | |
3756 | c = tolower (c); | |
3757 | r = r * 67 + c - 113; | |
3758 | } | |
9291a0cd TT |
3759 | |
3760 | return r; | |
3761 | } | |
3762 | ||
3763 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3764 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3765 | constant pool and return true. If NAME cannot be found, return |
3766 | false. */ | |
2fdf6df6 | 3767 | |
109483d9 | 3768 | static bool |
9291a0cd TT |
3769 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3770 | offset_type **vec_out) | |
3771 | { | |
0cf03b49 | 3772 | offset_type hash; |
9291a0cd | 3773 | offset_type slot, step; |
559a7a62 | 3774 | int (*cmp) (const char *, const char *); |
9291a0cd | 3775 | |
791afaa2 | 3776 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3777 | if (current_language->la_language == language_cplus |
45280282 IB |
3778 | || current_language->la_language == language_fortran |
3779 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3780 | { |
3781 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3782 | not contain any. */ | |
a8719064 | 3783 | |
72998fb3 | 3784 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3785 | { |
109483d9 | 3786 | without_params = cp_remove_params (name); |
0cf03b49 | 3787 | |
72998fb3 | 3788 | if (without_params != NULL) |
791afaa2 | 3789 | name = without_params.get (); |
0cf03b49 JK |
3790 | } |
3791 | } | |
3792 | ||
559a7a62 | 3793 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3794 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3795 | simulate our NAME being searched is also lowercased. */ |
3796 | hash = mapped_index_string_hash ((index->version == 4 | |
3797 | && case_sensitivity == case_sensitive_off | |
3798 | ? 5 : index->version), | |
3799 | name); | |
3800 | ||
f00a2de2 PA |
3801 | slot = hash & (index->symbol_table.size () - 1); |
3802 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3803 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3804 | |
3805 | for (;;) | |
3806 | { | |
9291a0cd | 3807 | const char *str; |
f00a2de2 PA |
3808 | |
3809 | const auto &bucket = index->symbol_table[slot]; | |
3810 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3811 | return false; |
9291a0cd | 3812 | |
f00a2de2 | 3813 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3814 | if (!cmp (name, str)) |
9291a0cd TT |
3815 | { |
3816 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3817 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3818 | return true; |
9291a0cd TT |
3819 | } |
3820 | ||
f00a2de2 | 3821 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3822 | } |
3823 | } | |
3824 | ||
2ec9a5e0 TT |
3825 | /* A helper function that reads the .gdb_index from SECTION and fills |
3826 | in MAP. FILENAME is the name of the file containing the section; | |
3827 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3828 | ok to use deprecated sections. | |
3829 | ||
3830 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3831 | out parameters that are filled in with information about the CU and | |
3832 | TU lists in the section. | |
3833 | ||
3834 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3835 | |
9291a0cd | 3836 | static int |
2ec9a5e0 TT |
3837 | read_index_from_section (struct objfile *objfile, |
3838 | const char *filename, | |
3839 | int deprecated_ok, | |
3840 | struct dwarf2_section_info *section, | |
3841 | struct mapped_index *map, | |
3842 | const gdb_byte **cu_list, | |
3843 | offset_type *cu_list_elements, | |
3844 | const gdb_byte **types_list, | |
3845 | offset_type *types_list_elements) | |
9291a0cd | 3846 | { |
948f8e3d | 3847 | const gdb_byte *addr; |
2ec9a5e0 | 3848 | offset_type version; |
b3b272e1 | 3849 | offset_type *metadata; |
1fd400ff | 3850 | int i; |
9291a0cd | 3851 | |
2ec9a5e0 | 3852 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3853 | return 0; |
82430852 JK |
3854 | |
3855 | /* Older elfutils strip versions could keep the section in the main | |
3856 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3857 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3858 | return 0; |
3859 | ||
2ec9a5e0 | 3860 | dwarf2_read_section (objfile, section); |
9291a0cd | 3861 | |
2ec9a5e0 | 3862 | addr = section->buffer; |
9291a0cd | 3863 | /* Version check. */ |
1fd400ff | 3864 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3865 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3866 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3867 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3868 | indices. */ |
831adc1f | 3869 | if (version < 4) |
481860b3 GB |
3870 | { |
3871 | static int warning_printed = 0; | |
3872 | if (!warning_printed) | |
3873 | { | |
3874 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3875 | filename); |
481860b3 GB |
3876 | warning_printed = 1; |
3877 | } | |
3878 | return 0; | |
3879 | } | |
3880 | /* Index version 4 uses a different hash function than index version | |
3881 | 5 and later. | |
3882 | ||
3883 | Versions earlier than 6 did not emit psymbols for inlined | |
3884 | functions. Using these files will cause GDB not to be able to | |
3885 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3886 | indices unless the user has done |
3887 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3888 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3889 | { |
3890 | static int warning_printed = 0; | |
3891 | if (!warning_printed) | |
3892 | { | |
e615022a DE |
3893 | warning (_("\ |
3894 | Skipping deprecated .gdb_index section in %s.\n\ | |
3895 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3896 | to use the section anyway."), | |
2ec9a5e0 | 3897 | filename); |
481860b3 GB |
3898 | warning_printed = 1; |
3899 | } | |
3900 | return 0; | |
3901 | } | |
796a7ff8 | 3902 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3903 | of the TU (for symbols coming from TUs), |
3904 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3905 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3906 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3907 | These are just performance bugs, and we can't distinguish gdb-generated | |
3908 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3909 | |
481860b3 | 3910 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3911 | longer backward compatible. */ |
796a7ff8 | 3912 | if (version > 8) |
594e8718 | 3913 | return 0; |
9291a0cd | 3914 | |
559a7a62 | 3915 | map->version = version; |
2ec9a5e0 | 3916 | map->total_size = section->size; |
9291a0cd TT |
3917 | |
3918 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3919 | |
3920 | i = 0; | |
2ec9a5e0 TT |
3921 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3922 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3923 | / 8); | |
1fd400ff TT |
3924 | ++i; |
3925 | ||
2ec9a5e0 TT |
3926 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3927 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3928 | - MAYBE_SWAP (metadata[i])) | |
3929 | / 8); | |
987d643c | 3930 | ++i; |
1fd400ff | 3931 | |
f00a2de2 PA |
3932 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3933 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3934 | map->address_table | |
3935 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3936 | ++i; |
3937 | ||
f00a2de2 PA |
3938 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3939 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3940 | map->symbol_table | |
3941 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3942 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3943 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3944 | |
f00a2de2 | 3945 | ++i; |
f9d83a0b | 3946 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3947 | |
2ec9a5e0 TT |
3948 | return 1; |
3949 | } | |
3950 | ||
927aa2e7 | 3951 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3952 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3953 | ||
3954 | static int | |
3955 | dwarf2_read_index (struct objfile *objfile) | |
3956 | { | |
3957 | struct mapped_index local_map, *map; | |
3958 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3959 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3960 | struct dwz_file *dwz; |
ed2dc618 SM |
3961 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3962 | = get_dwarf2_per_objfile (objfile); | |
2ec9a5e0 | 3963 | |
4262abfb | 3964 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3965 | use_deprecated_index_sections, |
3966 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3967 | &cu_list, &cu_list_elements, | |
3968 | &types_list, &types_list_elements)) | |
3969 | return 0; | |
3970 | ||
0fefef59 | 3971 | /* Don't use the index if it's empty. */ |
f00a2de2 | 3972 | if (local_map.symbol_table.empty ()) |
0fefef59 DE |
3973 | return 0; |
3974 | ||
2ec9a5e0 TT |
3975 | /* If there is a .dwz file, read it so we can get its CU list as |
3976 | well. */ | |
ed2dc618 | 3977 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3978 | if (dwz != NULL) |
2ec9a5e0 | 3979 | { |
2ec9a5e0 TT |
3980 | struct mapped_index dwz_map; |
3981 | const gdb_byte *dwz_types_ignore; | |
3982 | offset_type dwz_types_elements_ignore; | |
3983 | ||
3984 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3985 | 1, | |
3986 | &dwz->gdb_index, &dwz_map, | |
3987 | &dwz_list, &dwz_list_elements, | |
3988 | &dwz_types_ignore, | |
3989 | &dwz_types_elements_ignore)) | |
3990 | { | |
3991 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3992 | bfd_get_filename (dwz->dwz_bfd)); | |
3993 | return 0; | |
3994 | } | |
3995 | } | |
3996 | ||
74a0d9f6 JK |
3997 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3998 | dwz_list_elements); | |
1fd400ff | 3999 | |
8b70b953 TT |
4000 | if (types_list_elements) |
4001 | { | |
4002 | struct dwarf2_section_info *section; | |
4003 | ||
4004 | /* We can only handle a single .debug_types when we have an | |
4005 | index. */ | |
4006 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
4007 | return 0; | |
4008 | ||
4009 | section = VEC_index (dwarf2_section_info_def, | |
4010 | dwarf2_per_objfile->types, 0); | |
4011 | ||
74a0d9f6 JK |
4012 | create_signatured_type_table_from_index (objfile, section, types_list, |
4013 | types_list_elements); | |
8b70b953 | 4014 | } |
9291a0cd | 4015 | |
ed2dc618 | 4016 | create_addrmap_from_index (dwarf2_per_objfile, &local_map); |
2ec9a5e0 | 4017 | |
8d749320 | 4018 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
3f563c84 | 4019 | map = new (map) mapped_index (); |
2ec9a5e0 | 4020 | *map = local_map; |
9291a0cd TT |
4021 | |
4022 | dwarf2_per_objfile->index_table = map; | |
4023 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
4024 | dwarf2_per_objfile->quick_file_names_table = |
4025 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
4026 | |
4027 | return 1; | |
4028 | } | |
4029 | ||
dee91e82 | 4030 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 4031 | |
dee91e82 DE |
4032 | static void |
4033 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 4034 | const gdb_byte *info_ptr, |
dee91e82 DE |
4035 | struct die_info *comp_unit_die, |
4036 | int has_children, | |
4037 | void *data) | |
9291a0cd | 4038 | { |
dee91e82 | 4039 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 4040 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
4041 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4042 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 4043 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 4044 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 4045 | struct attribute *attr; |
dee91e82 | 4046 | int i; |
7b9f3c50 DE |
4047 | void **slot; |
4048 | struct quick_file_names *qfn; | |
9291a0cd | 4049 | |
0186c6a7 DE |
4050 | gdb_assert (! this_cu->is_debug_types); |
4051 | ||
07261596 TT |
4052 | /* Our callers never want to match partial units -- instead they |
4053 | will match the enclosing full CU. */ | |
4054 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
4055 | { | |
4056 | this_cu->v.quick->no_file_data = 1; | |
4057 | return; | |
4058 | } | |
4059 | ||
0186c6a7 | 4060 | lh_cu = this_cu; |
7b9f3c50 | 4061 | slot = NULL; |
dee91e82 | 4062 | |
fff8551c | 4063 | line_header_up lh; |
9c541725 | 4064 | sect_offset line_offset {}; |
fff8551c | 4065 | |
dee91e82 | 4066 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
4067 | if (attr) |
4068 | { | |
7b9f3c50 DE |
4069 | struct quick_file_names find_entry; |
4070 | ||
9c541725 | 4071 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
4072 | |
4073 | /* We may have already read in this line header (TU line header sharing). | |
4074 | If we have we're done. */ | |
094b34ac | 4075 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 4076 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
4077 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
4078 | &find_entry, INSERT); | |
4079 | if (*slot != NULL) | |
4080 | { | |
9a3c8263 | 4081 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 4082 | return; |
7b9f3c50 DE |
4083 | } |
4084 | ||
3019eac3 | 4085 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
4086 | } |
4087 | if (lh == NULL) | |
4088 | { | |
094b34ac | 4089 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 4090 | return; |
9291a0cd TT |
4091 | } |
4092 | ||
8d749320 | 4093 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 4094 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 4095 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
4096 | gdb_assert (slot != NULL); |
4097 | *slot = qfn; | |
9291a0cd | 4098 | |
d721ba37 | 4099 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 4100 | |
fff8551c | 4101 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 4102 | qfn->file_names = |
fff8551c PA |
4103 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
4104 | for (i = 0; i < lh->file_names.size (); ++i) | |
4105 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 4106 | qfn->real_names = NULL; |
9291a0cd | 4107 | |
094b34ac | 4108 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
4109 | } |
4110 | ||
4111 | /* A helper for the "quick" functions which attempts to read the line | |
4112 | table for THIS_CU. */ | |
4113 | ||
4114 | static struct quick_file_names * | |
e4a48d9d | 4115 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 4116 | { |
0186c6a7 DE |
4117 | /* This should never be called for TUs. */ |
4118 | gdb_assert (! this_cu->is_debug_types); | |
4119 | /* Nor type unit groups. */ | |
4120 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 4121 | |
dee91e82 DE |
4122 | if (this_cu->v.quick->file_names != NULL) |
4123 | return this_cu->v.quick->file_names; | |
4124 | /* If we know there is no line data, no point in looking again. */ | |
4125 | if (this_cu->v.quick->no_file_data) | |
4126 | return NULL; | |
4127 | ||
0186c6a7 | 4128 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
4129 | |
4130 | if (this_cu->v.quick->no_file_data) | |
4131 | return NULL; | |
4132 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
4133 | } |
4134 | ||
4135 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 4136 | real path for a given file name from the line table. */ |
2fdf6df6 | 4137 | |
9291a0cd | 4138 | static const char * |
7b9f3c50 DE |
4139 | dw2_get_real_path (struct objfile *objfile, |
4140 | struct quick_file_names *qfn, int index) | |
9291a0cd | 4141 | { |
7b9f3c50 DE |
4142 | if (qfn->real_names == NULL) |
4143 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 4144 | qfn->num_file_names, const char *); |
9291a0cd | 4145 | |
7b9f3c50 | 4146 | if (qfn->real_names[index] == NULL) |
14278e1f | 4147 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 4148 | |
7b9f3c50 | 4149 | return qfn->real_names[index]; |
9291a0cd TT |
4150 | } |
4151 | ||
4152 | static struct symtab * | |
4153 | dw2_find_last_source_symtab (struct objfile *objfile) | |
4154 | { | |
ed2dc618 SM |
4155 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4156 | = get_dwarf2_per_objfile (objfile); | |
4157 | int index = dwarf2_per_objfile->n_comp_units - 1; | |
4158 | dwarf2_per_cu_data *dwarf_cu = dw2_get_cutu (dwarf2_per_objfile, index); | |
4159 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu); | |
ae2de4f8 | 4160 | |
43f3e411 DE |
4161 | if (cust == NULL) |
4162 | return NULL; | |
ed2dc618 | 4163 | |
43f3e411 | 4164 | return compunit_primary_filetab (cust); |
9291a0cd TT |
4165 | } |
4166 | ||
7b9f3c50 DE |
4167 | /* Traversal function for dw2_forget_cached_source_info. */ |
4168 | ||
4169 | static int | |
4170 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 4171 | { |
7b9f3c50 | 4172 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 4173 | |
7b9f3c50 | 4174 | if (file_data->real_names) |
9291a0cd | 4175 | { |
7b9f3c50 | 4176 | int i; |
9291a0cd | 4177 | |
7b9f3c50 | 4178 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 4179 | { |
7b9f3c50 DE |
4180 | xfree ((void*) file_data->real_names[i]); |
4181 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
4182 | } |
4183 | } | |
7b9f3c50 DE |
4184 | |
4185 | return 1; | |
4186 | } | |
4187 | ||
4188 | static void | |
4189 | dw2_forget_cached_source_info (struct objfile *objfile) | |
4190 | { | |
ed2dc618 SM |
4191 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4192 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
4193 | |
4194 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
4195 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
4196 | } |
4197 | ||
f8eba3c6 TT |
4198 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
4199 | the symtabs and calls the iterator. */ | |
4200 | ||
4201 | static int | |
4202 | dw2_map_expand_apply (struct objfile *objfile, | |
4203 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 4204 | const char *name, const char *real_path, |
14bc53a8 | 4205 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 4206 | { |
43f3e411 | 4207 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
4208 | |
4209 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 4210 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
4211 | return 0; |
4212 | ||
4213 | /* This may expand more than one symtab, and we want to iterate over | |
4214 | all of them. */ | |
a0f42c21 | 4215 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 4216 | |
14bc53a8 PA |
4217 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
4218 | last_made, callback); | |
f8eba3c6 TT |
4219 | } |
4220 | ||
4221 | /* Implementation of the map_symtabs_matching_filename method. */ | |
4222 | ||
14bc53a8 PA |
4223 | static bool |
4224 | dw2_map_symtabs_matching_filename | |
4225 | (struct objfile *objfile, const char *name, const char *real_path, | |
4226 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd TT |
4227 | { |
4228 | int i; | |
c011a4f4 | 4229 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
4230 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4231 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 4232 | |
848e3e78 DE |
4233 | /* The rule is CUs specify all the files, including those used by |
4234 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 4235 | |
ed2dc618 | 4236 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4237 | { |
4238 | int j; | |
ed2dc618 | 4239 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
7b9f3c50 | 4240 | struct quick_file_names *file_data; |
9291a0cd | 4241 | |
3d7bb9d9 | 4242 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4243 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4244 | continue; |
4245 | ||
e4a48d9d | 4246 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4247 | if (file_data == NULL) |
9291a0cd TT |
4248 | continue; |
4249 | ||
7b9f3c50 | 4250 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4251 | { |
7b9f3c50 | 4252 | const char *this_name = file_data->file_names[j]; |
da235a7c | 4253 | const char *this_real_name; |
9291a0cd | 4254 | |
af529f8f | 4255 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 4256 | { |
f5b95b50 | 4257 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4258 | callback)) |
4259 | return true; | |
288e77a7 | 4260 | continue; |
4aac40c8 | 4261 | } |
9291a0cd | 4262 | |
c011a4f4 DE |
4263 | /* Before we invoke realpath, which can get expensive when many |
4264 | files are involved, do a quick comparison of the basenames. */ | |
4265 | if (! basenames_may_differ | |
4266 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
4267 | continue; | |
4268 | ||
da235a7c JK |
4269 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
4270 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 4271 | { |
da235a7c | 4272 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4273 | callback)) |
4274 | return true; | |
288e77a7 | 4275 | continue; |
da235a7c | 4276 | } |
9291a0cd | 4277 | |
da235a7c JK |
4278 | if (real_path != NULL) |
4279 | { | |
af529f8f JK |
4280 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
4281 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 4282 | if (this_real_name != NULL |
af529f8f | 4283 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 4284 | { |
f5b95b50 | 4285 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4286 | callback)) |
4287 | return true; | |
288e77a7 | 4288 | continue; |
9291a0cd TT |
4289 | } |
4290 | } | |
4291 | } | |
4292 | } | |
4293 | ||
14bc53a8 | 4294 | return false; |
9291a0cd TT |
4295 | } |
4296 | ||
da51c347 DE |
4297 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
4298 | ||
4299 | struct dw2_symtab_iterator | |
9291a0cd | 4300 | { |
ed2dc618 SM |
4301 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
4302 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
4303 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
4304 | int want_specific_block; | |
4305 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
4306 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
4307 | int block_index; | |
4308 | /* The kind of symbol we're looking for. */ | |
4309 | domain_enum domain; | |
4310 | /* The list of CUs from the index entry of the symbol, | |
4311 | or NULL if not found. */ | |
4312 | offset_type *vec; | |
4313 | /* The next element in VEC to look at. */ | |
4314 | int next; | |
4315 | /* The number of elements in VEC, or zero if there is no match. */ | |
4316 | int length; | |
8943b874 DE |
4317 | /* Have we seen a global version of the symbol? |
4318 | If so we can ignore all further global instances. | |
4319 | This is to work around gold/15646, inefficient gold-generated | |
4320 | indices. */ | |
4321 | int global_seen; | |
da51c347 | 4322 | }; |
9291a0cd | 4323 | |
da51c347 DE |
4324 | /* Initialize the index symtab iterator ITER. |
4325 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
4326 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 4327 | |
9291a0cd | 4328 | static void |
da51c347 | 4329 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 4330 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
4331 | int want_specific_block, |
4332 | int block_index, | |
4333 | domain_enum domain, | |
4334 | const char *name) | |
4335 | { | |
ed2dc618 | 4336 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
4337 | iter->want_specific_block = want_specific_block; |
4338 | iter->block_index = block_index; | |
4339 | iter->domain = domain; | |
4340 | iter->next = 0; | |
8943b874 | 4341 | iter->global_seen = 0; |
da51c347 | 4342 | |
ed2dc618 SM |
4343 | mapped_index *index = dwarf2_per_objfile->index_table; |
4344 | ||
4345 | /* index is NULL if OBJF_READNOW. */ | |
4346 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
4347 | iter->length = MAYBE_SWAP (*iter->vec); |
4348 | else | |
4349 | { | |
4350 | iter->vec = NULL; | |
4351 | iter->length = 0; | |
4352 | } | |
4353 | } | |
4354 | ||
4355 | /* Return the next matching CU or NULL if there are no more. */ | |
4356 | ||
4357 | static struct dwarf2_per_cu_data * | |
4358 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
4359 | { | |
ed2dc618 SM |
4360 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
4361 | ||
da51c347 DE |
4362 | for ( ; iter->next < iter->length; ++iter->next) |
4363 | { | |
4364 | offset_type cu_index_and_attrs = | |
4365 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
4366 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 4367 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
4368 | int want_static = iter->block_index != GLOBAL_BLOCK; |
4369 | /* This value is only valid for index versions >= 7. */ | |
4370 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4371 | gdb_index_symbol_kind symbol_kind = | |
4372 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4373 | /* Only check the symbol attributes if they're present. | |
4374 | Indices prior to version 7 don't record them, | |
4375 | and indices >= 7 may elide them for certain symbols | |
4376 | (gold does this). */ | |
4377 | int attrs_valid = | |
ed2dc618 | 4378 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
4379 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
4380 | ||
3190f0c6 DE |
4381 | /* Don't crash on bad data. */ |
4382 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4383 | + dwarf2_per_objfile->n_type_units)) | |
4384 | { | |
4385 | complaint (&symfile_complaints, | |
4386 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
4387 | " [in module %s]"), |
4388 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4389 | continue; |
4390 | } | |
4391 | ||
ed2dc618 | 4392 | per_cu = dw2_get_cutu (dwarf2_per_objfile, cu_index); |
3190f0c6 | 4393 | |
da51c347 | 4394 | /* Skip if already read in. */ |
43f3e411 | 4395 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4396 | continue; |
4397 | ||
8943b874 DE |
4398 | /* Check static vs global. */ |
4399 | if (attrs_valid) | |
4400 | { | |
4401 | if (iter->want_specific_block | |
4402 | && want_static != is_static) | |
4403 | continue; | |
4404 | /* Work around gold/15646. */ | |
4405 | if (!is_static && iter->global_seen) | |
4406 | continue; | |
4407 | if (!is_static) | |
4408 | iter->global_seen = 1; | |
4409 | } | |
da51c347 DE |
4410 | |
4411 | /* Only check the symbol's kind if it has one. */ | |
4412 | if (attrs_valid) | |
4413 | { | |
4414 | switch (iter->domain) | |
4415 | { | |
4416 | case VAR_DOMAIN: | |
4417 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4418 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4419 | /* Some types are also in VAR_DOMAIN. */ | |
4420 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4421 | continue; | |
4422 | break; | |
4423 | case STRUCT_DOMAIN: | |
4424 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4425 | continue; | |
4426 | break; | |
4427 | case LABEL_DOMAIN: | |
4428 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4429 | continue; | |
4430 | break; | |
4431 | default: | |
4432 | break; | |
4433 | } | |
4434 | } | |
4435 | ||
4436 | ++iter->next; | |
4437 | return per_cu; | |
4438 | } | |
4439 | ||
4440 | return NULL; | |
4441 | } | |
4442 | ||
43f3e411 | 4443 | static struct compunit_symtab * |
da51c347 DE |
4444 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4445 | const char *name, domain_enum domain) | |
9291a0cd | 4446 | { |
43f3e411 | 4447 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4448 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4449 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4450 | |
b5ec771e PA |
4451 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4452 | ||
ed2dc618 SM |
4453 | struct dw2_symtab_iterator iter; |
4454 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4455 | |
ed2dc618 | 4456 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4457 | |
ed2dc618 SM |
4458 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4459 | { | |
4460 | struct symbol *sym, *with_opaque = NULL; | |
4461 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
4462 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
4463 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4464 | |
ed2dc618 SM |
4465 | sym = block_find_symbol (block, name, domain, |
4466 | block_find_non_opaque_type_preferred, | |
4467 | &with_opaque); | |
b2e2f908 | 4468 | |
ed2dc618 SM |
4469 | /* Some caution must be observed with overloaded functions |
4470 | and methods, since the index will not contain any overload | |
4471 | information (but NAME might contain it). */ | |
da51c347 | 4472 | |
ed2dc618 SM |
4473 | if (sym != NULL |
4474 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4475 | return stab; | |
4476 | if (with_opaque != NULL | |
4477 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4478 | stab_best = stab; | |
da51c347 | 4479 | |
ed2dc618 | 4480 | /* Keep looking through other CUs. */ |
9291a0cd | 4481 | } |
9291a0cd | 4482 | |
da51c347 | 4483 | return stab_best; |
9291a0cd TT |
4484 | } |
4485 | ||
4486 | static void | |
4487 | dw2_print_stats (struct objfile *objfile) | |
4488 | { | |
ed2dc618 SM |
4489 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4490 | = get_dwarf2_per_objfile (objfile); | |
4491 | int total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; | |
4492 | int count = 0; | |
9291a0cd | 4493 | |
ed2dc618 | 4494 | for (int i = 0; i < total; ++i) |
9291a0cd | 4495 | { |
ed2dc618 | 4496 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
9291a0cd | 4497 | |
43f3e411 | 4498 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4499 | ++count; |
4500 | } | |
e4a48d9d | 4501 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4502 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4503 | } | |
4504 | ||
779bd270 DE |
4505 | /* This dumps minimal information about the index. |
4506 | It is called via "mt print objfiles". | |
4507 | One use is to verify .gdb_index has been loaded by the | |
4508 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4509 | ||
9291a0cd TT |
4510 | static void |
4511 | dw2_dump (struct objfile *objfile) | |
4512 | { | |
ed2dc618 SM |
4513 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4514 | = get_dwarf2_per_objfile (objfile); | |
4515 | ||
779bd270 DE |
4516 | gdb_assert (dwarf2_per_objfile->using_index); |
4517 | printf_filtered (".gdb_index:"); | |
4518 | if (dwarf2_per_objfile->index_table != NULL) | |
4519 | { | |
4520 | printf_filtered (" version %d\n", | |
4521 | dwarf2_per_objfile->index_table->version); | |
4522 | } | |
4523 | else | |
4524 | printf_filtered (" faked for \"readnow\"\n"); | |
4525 | printf_filtered ("\n"); | |
9291a0cd TT |
4526 | } |
4527 | ||
4528 | static void | |
3189cb12 DE |
4529 | dw2_relocate (struct objfile *objfile, |
4530 | const struct section_offsets *new_offsets, | |
4531 | const struct section_offsets *delta) | |
9291a0cd TT |
4532 | { |
4533 | /* There's nothing to relocate here. */ | |
4534 | } | |
4535 | ||
4536 | static void | |
4537 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4538 | const char *func_name) | |
4539 | { | |
ed2dc618 SM |
4540 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4541 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4542 | |
ed2dc618 SM |
4543 | struct dw2_symtab_iterator iter; |
4544 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4545 | |
ed2dc618 SM |
4546 | /* Note: It doesn't matter what we pass for block_index here. */ |
4547 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4548 | func_name); | |
da51c347 | 4549 | |
ed2dc618 SM |
4550 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4551 | dw2_instantiate_symtab (per_cu); | |
da51c347 | 4552 | |
9291a0cd TT |
4553 | } |
4554 | ||
4555 | static void | |
4556 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4557 | { | |
ed2dc618 SM |
4558 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4559 | = get_dwarf2_per_objfile (objfile); | |
4560 | int total_units = (dwarf2_per_objfile->n_comp_units | |
4561 | + dwarf2_per_objfile->n_type_units); | |
9291a0cd | 4562 | |
ed2dc618 | 4563 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4564 | { |
ed2dc618 SM |
4565 | struct dwarf2_per_cu_data *per_cu |
4566 | = dw2_get_cutu (dwarf2_per_objfile, i); | |
9291a0cd | 4567 | |
a0f42c21 | 4568 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4569 | } |
4570 | } | |
4571 | ||
4572 | static void | |
652a8996 JK |
4573 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4574 | const char *fullname) | |
9291a0cd | 4575 | { |
ed2dc618 SM |
4576 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4577 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4578 | |
4579 | /* We don't need to consider type units here. | |
4580 | This is only called for examining code, e.g. expand_line_sal. | |
4581 | There can be an order of magnitude (or more) more type units | |
4582 | than comp units, and we avoid them if we can. */ | |
4583 | ||
ed2dc618 | 4584 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4585 | { |
4586 | int j; | |
ed2dc618 | 4587 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
7b9f3c50 | 4588 | struct quick_file_names *file_data; |
9291a0cd | 4589 | |
3d7bb9d9 | 4590 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4591 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4592 | continue; |
4593 | ||
e4a48d9d | 4594 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4595 | if (file_data == NULL) |
9291a0cd TT |
4596 | continue; |
4597 | ||
7b9f3c50 | 4598 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4599 | { |
652a8996 JK |
4600 | const char *this_fullname = file_data->file_names[j]; |
4601 | ||
4602 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4603 | { |
a0f42c21 | 4604 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4605 | break; |
4606 | } | |
4607 | } | |
4608 | } | |
4609 | } | |
4610 | ||
9291a0cd | 4611 | static void |
ade7ed9e | 4612 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4613 | const char * name, domain_enum domain, |
ade7ed9e | 4614 | int global, |
40658b94 PH |
4615 | int (*callback) (struct block *, |
4616 | struct symbol *, void *), | |
b5ec771e | 4617 | void *data, symbol_name_match_type match, |
2edb89d3 | 4618 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4619 | { |
40658b94 | 4620 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4621 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4622 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4623 | } |
4624 | ||
b5ec771e PA |
4625 | /* Symbol name matcher for .gdb_index names. |
4626 | ||
4627 | Symbol names in .gdb_index have a few particularities: | |
4628 | ||
4629 | - There's no indication of which is the language of each symbol. | |
4630 | ||
4631 | Since each language has its own symbol name matching algorithm, | |
4632 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4633 | each symbol against all languages. This would be a potential |
4634 | performance problem if it were not mitigated by the | |
4635 | mapped_index::name_components lookup table, which significantly | |
4636 | reduces the number of times we need to call into this matcher, | |
4637 | making it a non-issue. | |
b5ec771e PA |
4638 | |
4639 | - Symbol names in the index have no overload (parameter) | |
4640 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4641 | appear as "foo" in the index, for example. | |
4642 | ||
4643 | This means that the lookup names passed to the symbol name | |
4644 | matcher functions must have no parameter information either | |
4645 | because (e.g.) symbol search name "foo" does not match | |
4646 | lookup-name "foo(int)" [while swapping search name for lookup | |
4647 | name would match]. | |
4648 | */ | |
4649 | class gdb_index_symbol_name_matcher | |
4650 | { | |
4651 | public: | |
4652 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4653 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4654 | ||
4655 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4656 | Returns true if any matcher matches. */ | |
4657 | bool matches (const char *symbol_name); | |
4658 | ||
4659 | private: | |
4660 | /* A reference to the lookup name we're matching against. */ | |
4661 | const lookup_name_info &m_lookup_name; | |
4662 | ||
4663 | /* A vector holding all the different symbol name matchers, for all | |
4664 | languages. */ | |
4665 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4666 | }; | |
4667 | ||
4668 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4669 | (const lookup_name_info &lookup_name) | |
4670 | : m_lookup_name (lookup_name) | |
4671 | { | |
4672 | /* Prepare the vector of comparison functions upfront, to avoid | |
4673 | doing the same work for each symbol. Care is taken to avoid | |
4674 | matching with the same matcher more than once if/when multiple | |
4675 | languages use the same matcher function. */ | |
4676 | auto &matchers = m_symbol_name_matcher_funcs; | |
4677 | matchers.reserve (nr_languages); | |
4678 | ||
4679 | matchers.push_back (default_symbol_name_matcher); | |
4680 | ||
4681 | for (int i = 0; i < nr_languages; i++) | |
4682 | { | |
4683 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4684 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4685 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4686 | |
4687 | /* Don't insert the same comparison routine more than once. | |
4688 | Note that we do this linear walk instead of a seemingly | |
4689 | cheaper sorted insert, or use a std::set or something like | |
4690 | that, because relative order of function addresses is not | |
4691 | stable. This is not a problem in practice because the number | |
4692 | of supported languages is low, and the cost here is tiny | |
4693 | compared to the number of searches we'll do afterwards using | |
4694 | this object. */ | |
4695 | if (name_matcher != default_symbol_name_matcher | |
4696 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4697 | == matchers.end ())) | |
4698 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4699 | } |
4700 | } | |
4701 | ||
4702 | bool | |
4703 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4704 | { | |
4705 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4706 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4707 | return true; | |
4708 | ||
4709 | return false; | |
4710 | } | |
4711 | ||
e1ef7d7a PA |
4712 | /* Starting from a search name, return the string that finds the upper |
4713 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4714 | list. Returns the empty string to indicate that the upper bound is | |
4715 | the end of the list. */ | |
4716 | ||
4717 | static std::string | |
4718 | make_sort_after_prefix_name (const char *search_name) | |
4719 | { | |
4720 | /* When looking to complete "func", we find the upper bound of all | |
4721 | symbols that start with "func" by looking for where we'd insert | |
4722 | the closest string that would follow "func" in lexicographical | |
4723 | order. Usually, that's "func"-with-last-character-incremented, | |
4724 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4725 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4726 | Especially mind the 0xff character, which is a valid character in | |
4727 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4728 | rule out compilers allowing it in identifiers. Note that | |
4729 | conveniently, strcmp/strcasecmp are specified to compare | |
4730 | characters interpreted as unsigned char. So what we do is treat | |
4731 | the whole string as a base 256 number composed of a sequence of | |
4732 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4733 | to 0, and carries 1 to the following more-significant position. | |
4734 | If the very first character in SEARCH_NAME ends up incremented | |
4735 | and carries/overflows, then the upper bound is the end of the | |
4736 | list. The string after the empty string is also the empty | |
4737 | string. | |
4738 | ||
4739 | Some examples of this operation: | |
4740 | ||
4741 | SEARCH_NAME => "+1" RESULT | |
4742 | ||
4743 | "abc" => "abd" | |
4744 | "ab\xff" => "ac" | |
4745 | "\xff" "a" "\xff" => "\xff" "b" | |
4746 | "\xff" => "" | |
4747 | "\xff\xff" => "" | |
4748 | "" => "" | |
4749 | ||
4750 | Then, with these symbols for example: | |
4751 | ||
4752 | func | |
4753 | func1 | |
4754 | fund | |
4755 | ||
4756 | completing "func" looks for symbols between "func" and | |
4757 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4758 | which finds "func" and "func1", but not "fund". | |
4759 | ||
4760 | And with: | |
4761 | ||
4762 | funcÿ (Latin1 'ÿ' [0xff]) | |
4763 | funcÿ1 | |
4764 | fund | |
4765 | ||
4766 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4767 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4768 | ||
4769 | And with: | |
4770 | ||
4771 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4772 | ÿÿ1 | |
4773 | ||
4774 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4775 | the end of the list. | |
4776 | */ | |
4777 | std::string after = search_name; | |
4778 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4779 | after.pop_back (); | |
4780 | if (!after.empty ()) | |
4781 | after.back () = (unsigned char) after.back () + 1; | |
4782 | return after; | |
4783 | } | |
4784 | ||
5c58de74 | 4785 | /* See declaration. */ |
61d96d7e | 4786 | |
5c58de74 PA |
4787 | std::pair<std::vector<name_component>::const_iterator, |
4788 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4789 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4790 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4791 | { |
5c58de74 PA |
4792 | auto *name_cmp |
4793 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4794 | |
4795 | const char *cplus | |
c62446b1 | 4796 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4797 | |
3f563c84 PA |
4798 | /* Comparison function object for lower_bound that matches against a |
4799 | given symbol name. */ | |
4800 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4801 | const char *name) | |
4802 | { | |
5c58de74 | 4803 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4804 | const char *elem_name = elem_qualified + elem.name_offset; |
4805 | return name_cmp (elem_name, name) < 0; | |
4806 | }; | |
4807 | ||
4808 | /* Comparison function object for upper_bound that matches against a | |
4809 | given symbol name. */ | |
4810 | auto lookup_compare_upper = [&] (const char *name, | |
4811 | const name_component &elem) | |
4812 | { | |
5c58de74 | 4813 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4814 | const char *elem_name = elem_qualified + elem.name_offset; |
4815 | return name_cmp (name, elem_name) < 0; | |
4816 | }; | |
4817 | ||
5c58de74 PA |
4818 | auto begin = this->name_components.begin (); |
4819 | auto end = this->name_components.end (); | |
3f563c84 PA |
4820 | |
4821 | /* Find the lower bound. */ | |
4822 | auto lower = [&] () | |
4823 | { | |
5c58de74 | 4824 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4825 | return begin; |
4826 | else | |
4827 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4828 | } (); | |
4829 | ||
4830 | /* Find the upper bound. */ | |
4831 | auto upper = [&] () | |
4832 | { | |
5c58de74 | 4833 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4834 | { |
e1ef7d7a PA |
4835 | /* In completion mode, we want UPPER to point past all |
4836 | symbols names that have the same prefix. I.e., with | |
4837 | these symbols, and completing "func": | |
4838 | ||
4839 | function << lower bound | |
4840 | function1 | |
4841 | other_function << upper bound | |
4842 | ||
4843 | We find the upper bound by looking for the insertion | |
4844 | point of "func"-with-last-character-incremented, | |
4845 | i.e. "fund". */ | |
4846 | std::string after = make_sort_after_prefix_name (cplus); | |
4847 | if (after.empty ()) | |
3f563c84 | 4848 | return end; |
e6b2f5ef PA |
4849 | return std::lower_bound (lower, end, after.c_str (), |
4850 | lookup_compare_lower); | |
3f563c84 PA |
4851 | } |
4852 | else | |
4853 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4854 | } (); | |
4855 | ||
5c58de74 PA |
4856 | return {lower, upper}; |
4857 | } | |
4858 | ||
4859 | /* See declaration. */ | |
4860 | ||
4861 | void | |
44ed8f3e | 4862 | mapped_index_base::build_name_components () |
5c58de74 PA |
4863 | { |
4864 | if (!this->name_components.empty ()) | |
4865 | return; | |
4866 | ||
4867 | this->name_components_casing = case_sensitivity; | |
4868 | auto *name_cmp | |
4869 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4870 | ||
4871 | /* The code below only knows how to break apart components of C++ | |
4872 | symbol names (and other languages that use '::' as | |
4873 | namespace/module separator). If we add support for wild matching | |
4874 | to some language that uses some other operator (E.g., Ada, Go and | |
4875 | D use '.'), then we'll need to try splitting the symbol name | |
4876 | according to that language too. Note that Ada does support wild | |
4877 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4878 | auto count = this->symbol_name_count (); |
4879 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4880 | { |
44ed8f3e | 4881 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4882 | continue; |
4883 | ||
4884 | const char *name = this->symbol_name_at (idx); | |
4885 | ||
4886 | /* Add each name component to the name component table. */ | |
4887 | unsigned int previous_len = 0; | |
4888 | for (unsigned int current_len = cp_find_first_component (name); | |
4889 | name[current_len] != '\0'; | |
4890 | current_len += cp_find_first_component (name + current_len)) | |
4891 | { | |
4892 | gdb_assert (name[current_len] == ':'); | |
4893 | this->name_components.push_back ({previous_len, idx}); | |
4894 | /* Skip the '::'. */ | |
4895 | current_len += 2; | |
4896 | previous_len = current_len; | |
4897 | } | |
4898 | this->name_components.push_back ({previous_len, idx}); | |
4899 | } | |
4900 | ||
4901 | /* Sort name_components elements by name. */ | |
4902 | auto name_comp_compare = [&] (const name_component &left, | |
4903 | const name_component &right) | |
4904 | { | |
4905 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4906 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4907 | ||
4908 | const char *left_name = left_qualified + left.name_offset; | |
4909 | const char *right_name = right_qualified + right.name_offset; | |
4910 | ||
4911 | return name_cmp (left_name, right_name) < 0; | |
4912 | }; | |
4913 | ||
4914 | std::sort (this->name_components.begin (), | |
4915 | this->name_components.end (), | |
4916 | name_comp_compare); | |
4917 | } | |
4918 | ||
4919 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4920 | mapped_index_base instead of the containing objfile. This is split |
4921 | to a separate function in order to be able to unit test the | |
4922 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4923 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4924 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4925 | |
4926 | static void | |
4927 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4928 | (mapped_index_base &index, |
5c58de74 PA |
4929 | const lookup_name_info &lookup_name_in, |
4930 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4931 | enum search_domain kind, | |
4932 | gdb::function_view<void (offset_type)> match_callback) | |
4933 | { | |
4934 | lookup_name_info lookup_name_without_params | |
4935 | = lookup_name_in.make_ignore_params (); | |
4936 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4937 | (lookup_name_without_params); | |
4938 | ||
4939 | /* Build the symbol name component sorted vector, if we haven't | |
4940 | yet. */ | |
4941 | index.build_name_components (); | |
4942 | ||
4943 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4944 | ||
3f563c84 PA |
4945 | /* Now for each symbol name in range, check to see if we have a name |
4946 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4947 | ||
4948 | /* The same symbol may appear more than once in the range though. | |
4949 | E.g., if we're looking for symbols that complete "w", and we have | |
4950 | a symbol named "w1::w2", we'll find the two name components for | |
4951 | that same symbol in the range. To be sure we only call the | |
4952 | callback once per symbol, we first collect the symbol name | |
4953 | indexes that matched in a temporary vector and ignore | |
4954 | duplicates. */ | |
4955 | std::vector<offset_type> matches; | |
5c58de74 | 4956 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4957 | |
5c58de74 | 4958 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4959 | { |
5c58de74 | 4960 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4961 | |
4962 | if (!lookup_name_matcher.matches (qualified) | |
4963 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4964 | continue; |
4965 | ||
5c58de74 | 4966 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4967 | } |
4968 | ||
4969 | std::sort (matches.begin (), matches.end ()); | |
4970 | ||
4971 | /* Finally call the callback, once per match. */ | |
4972 | ULONGEST prev = -1; | |
4973 | for (offset_type idx : matches) | |
4974 | { | |
4975 | if (prev != idx) | |
4976 | { | |
4977 | match_callback (idx); | |
4978 | prev = idx; | |
4979 | } | |
4980 | } | |
4981 | ||
4982 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4983 | (offset_type)-1 are both possible values. */ | |
4984 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4985 | } | |
4986 | ||
c62446b1 PA |
4987 | #if GDB_SELF_TEST |
4988 | ||
4989 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4990 | ||
a3c5fafd PA |
4991 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4992 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4993 | mapped_index_base interface. Builds an index from the symbol list | |
4994 | passed as parameter to the constructor. */ | |
4995 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4996 | { |
4997 | public: | |
a3c5fafd PA |
4998 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4999 | : m_symbol_table (symbols) | |
c62446b1 PA |
5000 | {} |
5001 | ||
a3c5fafd | 5002 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 5003 | |
a3c5fafd PA |
5004 | /* Return the number of names in the symbol table. */ |
5005 | virtual size_t symbol_name_count () const | |
c62446b1 | 5006 | { |
a3c5fafd | 5007 | return m_symbol_table.size (); |
c62446b1 PA |
5008 | } |
5009 | ||
a3c5fafd PA |
5010 | /* Get the name of the symbol at IDX in the symbol table. */ |
5011 | virtual const char *symbol_name_at (offset_type idx) const | |
5012 | { | |
5013 | return m_symbol_table[idx]; | |
5014 | } | |
c62446b1 | 5015 | |
a3c5fafd PA |
5016 | private: |
5017 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
5018 | }; |
5019 | ||
5020 | /* Convenience function that converts a NULL pointer to a "<null>" | |
5021 | string, to pass to print routines. */ | |
5022 | ||
5023 | static const char * | |
5024 | string_or_null (const char *str) | |
5025 | { | |
5026 | return str != NULL ? str : "<null>"; | |
5027 | } | |
5028 | ||
5029 | /* Check if a lookup_name_info built from | |
5030 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
5031 | index. EXPECTED_LIST is the list of expected matches, in expected | |
5032 | matching order. If no match expected, then an empty list is | |
5033 | specified. Returns true on success. On failure prints a warning | |
5034 | indicating the file:line that failed, and returns false. */ | |
5035 | ||
5036 | static bool | |
5037 | check_match (const char *file, int line, | |
5038 | mock_mapped_index &mock_index, | |
5039 | const char *name, symbol_name_match_type match_type, | |
5040 | bool completion_mode, | |
5041 | std::initializer_list<const char *> expected_list) | |
5042 | { | |
5043 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
5044 | ||
5045 | bool matched = true; | |
5046 | ||
5047 | auto mismatch = [&] (const char *expected_str, | |
5048 | const char *got) | |
5049 | { | |
5050 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
5051 | "expected=\"%s\", got=\"%s\"\n"), | |
5052 | file, line, | |
5053 | (match_type == symbol_name_match_type::FULL | |
5054 | ? "FULL" : "WILD"), | |
5055 | name, string_or_null (expected_str), string_or_null (got)); | |
5056 | matched = false; | |
5057 | }; | |
5058 | ||
5059 | auto expected_it = expected_list.begin (); | |
5060 | auto expected_end = expected_list.end (); | |
5061 | ||
a3c5fafd | 5062 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
5063 | NULL, ALL_DOMAIN, |
5064 | [&] (offset_type idx) | |
5065 | { | |
a3c5fafd | 5066 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
5067 | const char *expected_str |
5068 | = expected_it == expected_end ? NULL : *expected_it++; | |
5069 | ||
5070 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
5071 | mismatch (expected_str, matched_name); | |
5072 | }); | |
5073 | ||
5074 | const char *expected_str | |
5075 | = expected_it == expected_end ? NULL : *expected_it++; | |
5076 | if (expected_str != NULL) | |
5077 | mismatch (expected_str, NULL); | |
5078 | ||
5079 | return matched; | |
5080 | } | |
5081 | ||
5082 | /* The symbols added to the mock mapped_index for testing (in | |
5083 | canonical form). */ | |
5084 | static const char *test_symbols[] = { | |
5085 | "function", | |
5086 | "std::bar", | |
5087 | "std::zfunction", | |
5088 | "std::zfunction2", | |
5089 | "w1::w2", | |
5090 | "ns::foo<char*>", | |
5091 | "ns::foo<int>", | |
5092 | "ns::foo<long>", | |
a20714ff PA |
5093 | "ns2::tmpl<int>::foo2", |
5094 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 5095 | |
e1ef7d7a PA |
5096 | /* These are used to check that the increment-last-char in the |
5097 | matching algorithm for completion doesn't match "t1_fund" when | |
5098 | completing "t1_func". */ | |
5099 | "t1_func", | |
5100 | "t1_func1", | |
5101 | "t1_fund", | |
5102 | "t1_fund1", | |
5103 | ||
5104 | /* A UTF-8 name with multi-byte sequences to make sure that | |
5105 | cp-name-parser understands this as a single identifier ("função" | |
5106 | is "function" in PT). */ | |
5107 | u8"u8função", | |
5108 | ||
5109 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
5110 | "yfunc\377", | |
5111 | ||
5112 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
5113 | "\377", | |
5114 | "\377\377123", | |
5115 | ||
c62446b1 PA |
5116 | /* A name with all sorts of complications. Starts with "z" to make |
5117 | it easier for the completion tests below. */ | |
5118 | #define Z_SYM_NAME \ | |
5119 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
5120 | "::tuple<(anonymous namespace)::ui*, " \ | |
5121 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
5122 | ||
5123 | Z_SYM_NAME | |
5124 | }; | |
5125 | ||
a3c5fafd PA |
5126 | /* Returns true if the mapped_index_base::find_name_component_bounds |
5127 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
5128 | in completion mode. */ | |
5c58de74 PA |
5129 | |
5130 | static bool | |
a3c5fafd | 5131 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
5132 | const char *search_name, |
5133 | gdb::array_view<const char *> expected_syms) | |
5134 | { | |
5135 | lookup_name_info lookup_name (search_name, | |
5136 | symbol_name_match_type::FULL, true); | |
5137 | ||
5138 | auto bounds = index.find_name_components_bounds (lookup_name); | |
5139 | ||
5140 | size_t distance = std::distance (bounds.first, bounds.second); | |
5141 | if (distance != expected_syms.size ()) | |
5142 | return false; | |
5143 | ||
5144 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
5145 | { | |
5146 | auto nc_elem = bounds.first + exp_elem; | |
5147 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
5148 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
5149 | return false; | |
5150 | } | |
5151 | ||
5152 | return true; | |
5153 | } | |
5154 | ||
5155 | /* Test the lower-level mapped_index::find_name_component_bounds | |
5156 | method. */ | |
5157 | ||
c62446b1 | 5158 | static void |
5c58de74 PA |
5159 | test_mapped_index_find_name_component_bounds () |
5160 | { | |
5161 | mock_mapped_index mock_index (test_symbols); | |
5162 | ||
a3c5fafd | 5163 | mock_index.build_name_components (); |
5c58de74 PA |
5164 | |
5165 | /* Test the lower-level mapped_index::find_name_component_bounds | |
5166 | method in completion mode. */ | |
5167 | { | |
5168 | static const char *expected_syms[] = { | |
5169 | "t1_func", | |
5170 | "t1_func1", | |
5c58de74 PA |
5171 | }; |
5172 | ||
a3c5fafd | 5173 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5174 | "t1_func", expected_syms)); |
5175 | } | |
5176 | ||
5177 | /* Check that the increment-last-char in the name matching algorithm | |
5178 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
5179 | { | |
5180 | static const char *expected_syms1[] = { | |
5181 | "\377", | |
5182 | "\377\377123", | |
5183 | }; | |
a3c5fafd | 5184 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5185 | "\377", expected_syms1)); |
5186 | ||
5187 | static const char *expected_syms2[] = { | |
5188 | "\377\377123", | |
5189 | }; | |
a3c5fafd | 5190 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5191 | "\377\377", expected_syms2)); |
5192 | } | |
5193 | } | |
5194 | ||
5195 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
5196 | ||
5197 | static void | |
5198 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
5199 | { |
5200 | mock_mapped_index mock_index (test_symbols); | |
5201 | ||
5202 | /* We let all tests run until the end even if some fails, for debug | |
5203 | convenience. */ | |
5204 | bool any_mismatch = false; | |
5205 | ||
5206 | /* Create the expected symbols list (an initializer_list). Needed | |
5207 | because lists have commas, and we need to pass them to CHECK, | |
5208 | which is a macro. */ | |
5209 | #define EXPECT(...) { __VA_ARGS__ } | |
5210 | ||
5211 | /* Wrapper for check_match that passes down the current | |
5212 | __FILE__/__LINE__. */ | |
5213 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
5214 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
5215 | mock_index, \ | |
5216 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
5217 | EXPECTED_LIST) | |
5218 | ||
5219 | /* Identity checks. */ | |
5220 | for (const char *sym : test_symbols) | |
5221 | { | |
5222 | /* Should be able to match all existing symbols. */ | |
5223 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
5224 | EXPECT (sym)); | |
5225 | ||
5226 | /* Should be able to match all existing symbols with | |
5227 | parameters. */ | |
5228 | std::string with_params = std::string (sym) + "(int)"; | |
5229 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5230 | EXPECT (sym)); | |
5231 | ||
5232 | /* Should be able to match all existing symbols with | |
5233 | parameters and qualifiers. */ | |
5234 | with_params = std::string (sym) + " ( int ) const"; | |
5235 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5236 | EXPECT (sym)); | |
5237 | ||
5238 | /* This should really find sym, but cp-name-parser.y doesn't | |
5239 | know about lvalue/rvalue qualifiers yet. */ | |
5240 | with_params = std::string (sym) + " ( int ) &&"; | |
5241 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5242 | {}); | |
5243 | } | |
5244 | ||
e1ef7d7a PA |
5245 | /* Check that the name matching algorithm for completion doesn't get |
5246 | confused with Latin1 'ÿ' / 0xff. */ | |
5247 | { | |
5248 | static const char str[] = "\377"; | |
5249 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5250 | EXPECT ("\377", "\377\377123")); | |
5251 | } | |
5252 | ||
5253 | /* Check that the increment-last-char in the matching algorithm for | |
5254 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
5255 | { | |
5256 | static const char str[] = "t1_func"; | |
5257 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5258 | EXPECT ("t1_func", "t1_func1")); | |
5259 | } | |
5260 | ||
c62446b1 PA |
5261 | /* Check that completion mode works at each prefix of the expected |
5262 | symbol name. */ | |
5263 | { | |
5264 | static const char str[] = "function(int)"; | |
5265 | size_t len = strlen (str); | |
5266 | std::string lookup; | |
5267 | ||
5268 | for (size_t i = 1; i < len; i++) | |
5269 | { | |
5270 | lookup.assign (str, i); | |
5271 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5272 | EXPECT ("function")); | |
5273 | } | |
5274 | } | |
5275 | ||
5276 | /* While "w" is a prefix of both components, the match function | |
5277 | should still only be called once. */ | |
5278 | { | |
5279 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
5280 | EXPECT ("w1::w2")); | |
a20714ff PA |
5281 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
5282 | EXPECT ("w1::w2")); | |
c62446b1 PA |
5283 | } |
5284 | ||
5285 | /* Same, with a "complicated" symbol. */ | |
5286 | { | |
5287 | static const char str[] = Z_SYM_NAME; | |
5288 | size_t len = strlen (str); | |
5289 | std::string lookup; | |
5290 | ||
5291 | for (size_t i = 1; i < len; i++) | |
5292 | { | |
5293 | lookup.assign (str, i); | |
5294 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5295 | EXPECT (Z_SYM_NAME)); | |
5296 | } | |
5297 | } | |
5298 | ||
5299 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
5300 | { | |
5301 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
5302 | {}); | |
5303 | } | |
5304 | ||
5305 | /* A complete symbol with parameters matches any overload, since the | |
5306 | index has no overload info. */ | |
5307 | { | |
5308 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
5309 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
5310 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
5311 | EXPECT ("std::zfunction", "std::zfunction2")); | |
5312 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
5313 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
5314 | } |
5315 | ||
5316 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5317 | template argument list. */ | |
5318 | { | |
5319 | static const char expected[] = "ns::foo<int>"; | |
5320 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
5321 | EXPECT (expected)); | |
a20714ff PA |
5322 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
5323 | EXPECT (expected)); | |
c62446b1 PA |
5324 | } |
5325 | ||
5326 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5327 | template argument list that includes a pointer. */ | |
5328 | { | |
5329 | static const char expected[] = "ns::foo<char*>"; | |
5330 | /* Try both completion and non-completion modes. */ | |
5331 | static const bool completion_mode[2] = {false, true}; | |
5332 | for (size_t i = 0; i < 2; i++) | |
5333 | { | |
5334 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
5335 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5336 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
5337 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5338 | |
5339 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
5340 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5341 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
5342 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5343 | } |
5344 | } | |
5345 | ||
5346 | { | |
5347 | /* Check method qualifiers are ignored. */ | |
5348 | static const char expected[] = "ns::foo<char*>"; | |
5349 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
5350 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
5351 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
5352 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
5353 | CHECK_MATCH ("foo < char * > ( int ) const", |
5354 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
5355 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
5356 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
5357 | } |
5358 | ||
5359 | /* Test lookup names that don't match anything. */ | |
5360 | { | |
a20714ff PA |
5361 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
5362 | {}); | |
5363 | ||
c62446b1 PA |
5364 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
5365 | {}); | |
5366 | } | |
5367 | ||
a20714ff PA |
5368 | /* Some wild matching tests, exercising "(anonymous namespace)", |
5369 | which should not be confused with a parameter list. */ | |
5370 | { | |
5371 | static const char *syms[] = { | |
5372 | "A::B::C", | |
5373 | "B::C", | |
5374 | "C", | |
5375 | "A :: B :: C ( int )", | |
5376 | "B :: C ( int )", | |
5377 | "C ( int )", | |
5378 | }; | |
5379 | ||
5380 | for (const char *s : syms) | |
5381 | { | |
5382 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
5383 | EXPECT ("(anonymous namespace)::A::B::C")); | |
5384 | } | |
5385 | } | |
5386 | ||
5387 | { | |
5388 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
5389 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
5390 | EXPECT (expected)); | |
5391 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
5392 | EXPECT (expected)); | |
5393 | } | |
5394 | ||
c62446b1 PA |
5395 | SELF_CHECK (!any_mismatch); |
5396 | ||
5397 | #undef EXPECT | |
5398 | #undef CHECK_MATCH | |
5399 | } | |
5400 | ||
5c58de74 PA |
5401 | static void |
5402 | run_test () | |
5403 | { | |
5404 | test_mapped_index_find_name_component_bounds (); | |
5405 | test_dw2_expand_symtabs_matching_symbol (); | |
5406 | } | |
5407 | ||
c62446b1 PA |
5408 | }} // namespace selftests::dw2_expand_symtabs_matching |
5409 | ||
5410 | #endif /* GDB_SELF_TEST */ | |
5411 | ||
4b514bc8 JK |
5412 | /* If FILE_MATCHER is NULL or if PER_CU has |
5413 | dwarf2_per_cu_quick_data::MARK set (see | |
5414 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5415 | EXPANSION_NOTIFY on it. */ | |
5416 | ||
5417 | static void | |
5418 | dw2_expand_symtabs_matching_one | |
5419 | (struct dwarf2_per_cu_data *per_cu, | |
5420 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5421 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5422 | { | |
5423 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5424 | { | |
5425 | bool symtab_was_null | |
5426 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5427 | ||
5428 | dw2_instantiate_symtab (per_cu); | |
5429 | ||
5430 | if (expansion_notify != NULL | |
5431 | && symtab_was_null | |
5432 | && per_cu->v.quick->compunit_symtab != NULL) | |
5433 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5434 | } | |
5435 | } | |
5436 | ||
3f563c84 PA |
5437 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5438 | matched, to expand corresponding CUs that were marked. IDX is the | |
5439 | index of the symbol name that matched. */ | |
5440 | ||
5441 | static void | |
5442 | dw2_expand_marked_cus | |
ed2dc618 | 5443 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5444 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5445 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5446 | search_domain kind) | |
5447 | { | |
3f563c84 PA |
5448 | offset_type *vec, vec_len, vec_idx; |
5449 | bool global_seen = false; | |
ed2dc618 | 5450 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5451 | |
61920122 | 5452 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5453 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5454 | vec_len = MAYBE_SWAP (vec[0]); |
5455 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5456 | { | |
5457 | struct dwarf2_per_cu_data *per_cu; | |
5458 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); | |
5459 | /* This value is only valid for index versions >= 7. */ | |
5460 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5461 | gdb_index_symbol_kind symbol_kind = | |
5462 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5463 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5464 | /* Only check the symbol attributes if they're present. | |
5465 | Indices prior to version 7 don't record them, | |
5466 | and indices >= 7 may elide them for certain symbols | |
5467 | (gold does this). */ | |
5468 | int attrs_valid = | |
5469 | (index.version >= 7 | |
5470 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5471 | ||
5472 | /* Work around gold/15646. */ | |
5473 | if (attrs_valid) | |
9291a0cd | 5474 | { |
61920122 PA |
5475 | if (!is_static && global_seen) |
5476 | continue; | |
5477 | if (!is_static) | |
5478 | global_seen = true; | |
5479 | } | |
3190f0c6 | 5480 | |
61920122 PA |
5481 | /* Only check the symbol's kind if it has one. */ |
5482 | if (attrs_valid) | |
5483 | { | |
5484 | switch (kind) | |
8943b874 | 5485 | { |
61920122 PA |
5486 | case VARIABLES_DOMAIN: |
5487 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5488 | continue; | |
5489 | break; | |
5490 | case FUNCTIONS_DOMAIN: | |
5491 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5492 | continue; |
61920122 PA |
5493 | break; |
5494 | case TYPES_DOMAIN: | |
5495 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5496 | continue; | |
5497 | break; | |
5498 | default: | |
5499 | break; | |
8943b874 | 5500 | } |
61920122 | 5501 | } |
8943b874 | 5502 | |
61920122 PA |
5503 | /* Don't crash on bad data. */ |
5504 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
5505 | + dwarf2_per_objfile->n_type_units)) | |
5506 | { | |
5507 | complaint (&symfile_complaints, | |
5508 | _(".gdb_index entry has bad CU index" | |
ed2dc618 SM |
5509 | " [in module %s]"), |
5510 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5511 | continue; |
5512 | } | |
5513 | ||
ed2dc618 | 5514 | per_cu = dw2_get_cutu (dwarf2_per_objfile, cu_index); |
4b514bc8 JK |
5515 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5516 | expansion_notify); | |
61920122 PA |
5517 | } |
5518 | } | |
5519 | ||
4b514bc8 JK |
5520 | /* If FILE_MATCHER is non-NULL, set all the |
5521 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5522 | that match FILE_MATCHER. */ | |
5523 | ||
61920122 | 5524 | static void |
4b514bc8 | 5525 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5526 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5527 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5528 | { |
4b514bc8 | 5529 | if (file_matcher == NULL) |
61920122 PA |
5530 | return; |
5531 | ||
4b514bc8 JK |
5532 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5533 | ||
5534 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5535 | htab_eq_pointer, | |
5536 | NULL, xcalloc, xfree)); | |
5537 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5538 | htab_eq_pointer, |
5539 | NULL, xcalloc, xfree)); | |
61920122 | 5540 | |
4b514bc8 JK |
5541 | /* The rule is CUs specify all the files, including those used by |
5542 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5543 | |
927aa2e7 JK |
5544 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
5545 | { | |
5546 | int j; | |
ed2dc618 | 5547 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5548 | struct quick_file_names *file_data; |
5549 | void **slot; | |
5550 | ||
5551 | QUIT; | |
5552 | ||
5553 | per_cu->v.quick->mark = 0; | |
5554 | ||
5555 | /* We only need to look at symtabs not already expanded. */ | |
5556 | if (per_cu->v.quick->compunit_symtab) | |
5557 | continue; | |
5558 | ||
5559 | file_data = dw2_get_file_names (per_cu); | |
5560 | if (file_data == NULL) | |
5561 | continue; | |
5562 | ||
5563 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5564 | continue; | |
5565 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5566 | { | |
5567 | per_cu->v.quick->mark = 1; | |
5568 | continue; | |
5569 | } | |
5570 | ||
5571 | for (j = 0; j < file_data->num_file_names; ++j) | |
5572 | { | |
5573 | const char *this_real_name; | |
5574 | ||
5575 | if (file_matcher (file_data->file_names[j], false)) | |
5576 | { | |
5577 | per_cu->v.quick->mark = 1; | |
5578 | break; | |
5579 | } | |
5580 | ||
5581 | /* Before we invoke realpath, which can get expensive when many | |
5582 | files are involved, do a quick comparison of the basenames. */ | |
5583 | if (!basenames_may_differ | |
5584 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5585 | true)) | |
5586 | continue; | |
5587 | ||
5588 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5589 | if (file_matcher (this_real_name, false)) | |
5590 | { | |
5591 | per_cu->v.quick->mark = 1; | |
5592 | break; | |
5593 | } | |
5594 | } | |
5595 | ||
5596 | slot = htab_find_slot (per_cu->v.quick->mark | |
5597 | ? visited_found.get () | |
5598 | : visited_not_found.get (), | |
5599 | file_data, INSERT); | |
5600 | *slot = file_data; | |
5601 | } | |
5602 | } | |
5603 | ||
5604 | static void | |
5605 | dw2_expand_symtabs_matching | |
5606 | (struct objfile *objfile, | |
5607 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5608 | const lookup_name_info &lookup_name, | |
5609 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5610 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5611 | enum search_domain kind) | |
5612 | { | |
ed2dc618 SM |
5613 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5614 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5615 | |
5616 | /* index_table is NULL if OBJF_READNOW. */ | |
5617 | if (!dwarf2_per_objfile->index_table) | |
5618 | return; | |
5619 | ||
ed2dc618 | 5620 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5621 | |
5622 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5623 | ||
5624 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5625 | symbol_matcher, | |
5626 | kind, [&] (offset_type idx) | |
5627 | { | |
ed2dc618 | 5628 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5629 | expansion_notify, kind); |
5630 | }); | |
5631 | } | |
5632 | ||
5633 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5634 | symtab. */ | |
5635 | ||
5636 | static struct compunit_symtab * | |
5637 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5638 | CORE_ADDR pc) | |
5639 | { | |
5640 | int i; | |
5641 | ||
5642 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5643 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5644 | return cust; | |
5645 | ||
5646 | if (cust->includes == NULL) | |
5647 | return NULL; | |
5648 | ||
5649 | for (i = 0; cust->includes[i]; ++i) | |
5650 | { | |
5651 | struct compunit_symtab *s = cust->includes[i]; | |
5652 | ||
5653 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5654 | if (s != NULL) | |
5655 | return s; | |
5656 | } | |
5657 | ||
5658 | return NULL; | |
5659 | } | |
5660 | ||
5661 | static struct compunit_symtab * | |
5662 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5663 | struct bound_minimal_symbol msymbol, | |
5664 | CORE_ADDR pc, | |
5665 | struct obj_section *section, | |
5666 | int warn_if_readin) | |
5667 | { | |
5668 | struct dwarf2_per_cu_data *data; | |
5669 | struct compunit_symtab *result; | |
5670 | ||
927aa2e7 JK |
5671 | if (!objfile->psymtabs_addrmap) |
5672 | return NULL; | |
5673 | ||
5674 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, | |
5675 | pc); | |
5676 | if (!data) | |
5677 | return NULL; | |
5678 | ||
5679 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5680 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5681 | paddress (get_objfile_arch (objfile), pc)); | |
5682 | ||
5683 | result | |
5684 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
5685 | pc); | |
5686 | gdb_assert (result != NULL); | |
5687 | return result; | |
5688 | } | |
5689 | ||
5690 | static void | |
5691 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5692 | void *data, int need_fullname) | |
5693 | { | |
ed2dc618 SM |
5694 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5695 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5696 | |
5697 | if (!dwarf2_per_objfile->filenames_cache) | |
5698 | { | |
5699 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5700 | ||
5701 | htab_up visited (htab_create_alloc (10, | |
5702 | htab_hash_pointer, htab_eq_pointer, | |
5703 | NULL, xcalloc, xfree)); | |
5704 | ||
5705 | /* The rule is CUs specify all the files, including those used | |
5706 | by any TU, so there's no need to scan TUs here. We can | |
5707 | ignore file names coming from already-expanded CUs. */ | |
5708 | ||
5709 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5710 | { | |
ed2dc618 | 5711 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5712 | |
5713 | if (per_cu->v.quick->compunit_symtab) | |
5714 | { | |
5715 | void **slot = htab_find_slot (visited.get (), | |
5716 | per_cu->v.quick->file_names, | |
5717 | INSERT); | |
5718 | ||
5719 | *slot = per_cu->v.quick->file_names; | |
5720 | } | |
5721 | } | |
5722 | ||
5723 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5724 | { | |
ed2dc618 | 5725 | dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5726 | struct quick_file_names *file_data; |
5727 | void **slot; | |
5728 | ||
5729 | /* We only need to look at symtabs not already expanded. */ | |
5730 | if (per_cu->v.quick->compunit_symtab) | |
5731 | continue; | |
5732 | ||
5733 | file_data = dw2_get_file_names (per_cu); | |
5734 | if (file_data == NULL) | |
5735 | continue; | |
5736 | ||
5737 | slot = htab_find_slot (visited.get (), file_data, INSERT); | |
5738 | if (*slot) | |
5739 | { | |
5740 | /* Already visited. */ | |
5741 | continue; | |
5742 | } | |
5743 | *slot = file_data; | |
5744 | ||
5745 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5746 | { | |
5747 | const char *filename = file_data->file_names[j]; | |
5748 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5749 | } | |
5750 | } | |
5751 | } | |
5752 | ||
5753 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5754 | { | |
5755 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5756 | ||
5757 | if (need_fullname) | |
5758 | this_real_name = gdb_realpath (filename); | |
5759 | (*fun) (filename, this_real_name.get (), data); | |
5760 | }); | |
5761 | } | |
5762 | ||
5763 | static int | |
5764 | dw2_has_symbols (struct objfile *objfile) | |
5765 | { | |
5766 | return 1; | |
5767 | } | |
5768 | ||
5769 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5770 | { | |
5771 | dw2_has_symbols, | |
5772 | dw2_find_last_source_symtab, | |
5773 | dw2_forget_cached_source_info, | |
5774 | dw2_map_symtabs_matching_filename, | |
5775 | dw2_lookup_symbol, | |
5776 | dw2_print_stats, | |
5777 | dw2_dump, | |
5778 | dw2_relocate, | |
5779 | dw2_expand_symtabs_for_function, | |
5780 | dw2_expand_all_symtabs, | |
5781 | dw2_expand_symtabs_with_fullname, | |
5782 | dw2_map_matching_symbols, | |
5783 | dw2_expand_symtabs_matching, | |
5784 | dw2_find_pc_sect_compunit_symtab, | |
5785 | NULL, | |
5786 | dw2_map_symbol_filenames | |
5787 | }; | |
5788 | ||
5789 | /* DWARF-5 debug_names reader. */ | |
5790 | ||
5791 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5792 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5793 | ||
5794 | /* A helper function that reads the .debug_names section in SECTION | |
5795 | and fills in MAP. FILENAME is the name of the file containing the | |
5796 | section; it is used for error reporting. | |
5797 | ||
5798 | Returns true if all went well, false otherwise. */ | |
5799 | ||
5800 | static bool | |
5801 | read_debug_names_from_section (struct objfile *objfile, | |
5802 | const char *filename, | |
5803 | struct dwarf2_section_info *section, | |
5804 | mapped_debug_names &map) | |
5805 | { | |
5806 | if (dwarf2_section_empty_p (section)) | |
5807 | return false; | |
5808 | ||
5809 | /* Older elfutils strip versions could keep the section in the main | |
5810 | executable while splitting it for the separate debug info file. */ | |
5811 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5812 | return false; | |
5813 | ||
5814 | dwarf2_read_section (objfile, section); | |
5815 | ||
5816 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5817 | ||
5818 | const gdb_byte *addr = section->buffer; | |
5819 | ||
5820 | bfd *const abfd = get_section_bfd_owner (section); | |
5821 | ||
5822 | unsigned int bytes_read; | |
5823 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5824 | addr += bytes_read; | |
5825 | ||
5826 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5827 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5828 | if (bytes_read + length != section->size) | |
5829 | { | |
5830 | /* There may be multiple per-CU indices. */ | |
5831 | warning (_("Section .debug_names in %s length %s does not match " | |
5832 | "section length %s, ignoring .debug_names."), | |
5833 | filename, plongest (bytes_read + length), | |
5834 | pulongest (section->size)); | |
5835 | return false; | |
5836 | } | |
5837 | ||
5838 | /* The version number. */ | |
5839 | uint16_t version = read_2_bytes (abfd, addr); | |
5840 | addr += 2; | |
5841 | if (version != 5) | |
5842 | { | |
5843 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5844 | "ignoring .debug_names."), | |
5845 | filename, version); | |
5846 | return false; | |
5847 | } | |
5848 | ||
5849 | /* Padding. */ | |
5850 | uint16_t padding = read_2_bytes (abfd, addr); | |
5851 | addr += 2; | |
5852 | if (padding != 0) | |
5853 | { | |
5854 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5855 | "ignoring .debug_names."), | |
5856 | filename, padding); | |
5857 | return false; | |
5858 | } | |
5859 | ||
5860 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5861 | map.cu_count = read_4_bytes (abfd, addr); | |
5862 | addr += 4; | |
5863 | ||
5864 | /* local_type_unit_count - The number of TUs in the local TU | |
5865 | list. */ | |
5866 | map.tu_count = read_4_bytes (abfd, addr); | |
5867 | addr += 4; | |
5868 | ||
5869 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5870 | list. */ | |
5871 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5872 | addr += 4; | |
5873 | if (foreign_tu_count != 0) | |
5874 | { | |
5875 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5876 | "ignoring .debug_names."), | |
5877 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5878 | return false; | |
5879 | } | |
5880 | ||
5881 | /* bucket_count - The number of hash buckets in the hash lookup | |
5882 | table. */ | |
5883 | map.bucket_count = read_4_bytes (abfd, addr); | |
5884 | addr += 4; | |
5885 | ||
5886 | /* name_count - The number of unique names in the index. */ | |
5887 | map.name_count = read_4_bytes (abfd, addr); | |
5888 | addr += 4; | |
5889 | ||
5890 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5891 | table. */ | |
5892 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5893 | addr += 4; | |
5894 | ||
5895 | /* augmentation_string_size - The size in bytes of the augmentation | |
5896 | string. This value is rounded up to a multiple of 4. */ | |
5897 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5898 | addr += 4; | |
5899 | map.augmentation_is_gdb = ((augmentation_string_size | |
5900 | == sizeof (dwarf5_augmentation)) | |
5901 | && memcmp (addr, dwarf5_augmentation, | |
5902 | sizeof (dwarf5_augmentation)) == 0); | |
5903 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5904 | addr += augmentation_string_size; | |
5905 | ||
5906 | /* List of CUs */ | |
5907 | map.cu_table_reordered = addr; | |
5908 | addr += map.cu_count * map.offset_size; | |
5909 | ||
5910 | /* List of Local TUs */ | |
5911 | map.tu_table_reordered = addr; | |
5912 | addr += map.tu_count * map.offset_size; | |
5913 | ||
5914 | /* Hash Lookup Table */ | |
5915 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5916 | addr += map.bucket_count * 4; | |
5917 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5918 | addr += map.name_count * 4; | |
5919 | ||
5920 | /* Name Table */ | |
5921 | map.name_table_string_offs_reordered = addr; | |
5922 | addr += map.name_count * map.offset_size; | |
5923 | map.name_table_entry_offs_reordered = addr; | |
5924 | addr += map.name_count * map.offset_size; | |
5925 | ||
5926 | const gdb_byte *abbrev_table_start = addr; | |
5927 | for (;;) | |
5928 | { | |
5929 | unsigned int bytes_read; | |
5930 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5931 | addr += bytes_read; | |
5932 | if (index_num == 0) | |
5933 | break; | |
5934 | ||
5935 | const auto insertpair | |
5936 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5937 | if (!insertpair.second) | |
5938 | { | |
5939 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5940 | "ignoring .debug_names."), | |
5941 | filename, pulongest (index_num)); | |
5942 | return false; | |
5943 | } | |
5944 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5945 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5946 | addr += bytes_read; | |
5947 | ||
5948 | for (;;) | |
5949 | { | |
5950 | mapped_debug_names::index_val::attr attr; | |
5951 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5952 | addr += bytes_read; | |
5953 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5954 | addr += bytes_read; | |
5955 | if (attr.form == DW_FORM_implicit_const) | |
5956 | { | |
5957 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5958 | &bytes_read); | |
5959 | addr += bytes_read; | |
5960 | } | |
5961 | if (attr.dw_idx == 0 && attr.form == 0) | |
5962 | break; | |
5963 | indexval.attr_vec.push_back (std::move (attr)); | |
5964 | } | |
5965 | } | |
5966 | if (addr != abbrev_table_start + abbrev_table_size) | |
5967 | { | |
5968 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5969 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5970 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5971 | return false; | |
5972 | } | |
5973 | map.entry_pool = addr; | |
5974 | ||
5975 | return true; | |
5976 | } | |
5977 | ||
5978 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5979 | list. */ | |
5980 | ||
5981 | static void | |
ed2dc618 | 5982 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5983 | const mapped_debug_names &map, |
5984 | dwarf2_section_info §ion, | |
5985 | bool is_dwz, int base_offset) | |
5986 | { | |
5987 | sect_offset sect_off_prev; | |
5988 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5989 | { | |
5990 | sect_offset sect_off_next; | |
5991 | if (i < map.cu_count) | |
5992 | { | |
5993 | sect_off_next | |
5994 | = (sect_offset) (extract_unsigned_integer | |
5995 | (map.cu_table_reordered + i * map.offset_size, | |
5996 | map.offset_size, | |
5997 | map.dwarf5_byte_order)); | |
5998 | } | |
5999 | else | |
6000 | sect_off_next = (sect_offset) section.size; | |
6001 | if (i >= 1) | |
6002 | { | |
6003 | const ULONGEST length = sect_off_next - sect_off_prev; | |
6004 | dwarf2_per_objfile->all_comp_units[base_offset + (i - 1)] | |
ed2dc618 | 6005 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 JK |
6006 | sect_off_prev, length); |
6007 | } | |
6008 | sect_off_prev = sect_off_next; | |
6009 | } | |
6010 | } | |
6011 | ||
6012 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 6013 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
6014 | |
6015 | static void | |
ed2dc618 | 6016 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
6017 | const mapped_debug_names &map, |
6018 | const mapped_debug_names &dwz_map) | |
6019 | { | |
ed2dc618 | 6020 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
6021 | |
6022 | dwarf2_per_objfile->n_comp_units = map.cu_count + dwz_map.cu_count; | |
6023 | dwarf2_per_objfile->all_comp_units | |
6024 | = XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
6025 | dwarf2_per_objfile->n_comp_units); | |
6026 | ||
ed2dc618 SM |
6027 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
6028 | dwarf2_per_objfile->info, | |
927aa2e7 JK |
6029 | false /* is_dwz */, |
6030 | 0 /* base_offset */); | |
6031 | ||
6032 | if (dwz_map.cu_count == 0) | |
6033 | return; | |
6034 | ||
ed2dc618 SM |
6035 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
6036 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
927aa2e7 JK |
6037 | true /* is_dwz */, |
6038 | map.cu_count /* base_offset */); | |
6039 | } | |
6040 | ||
6041 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
6042 | elements of all the CUs and return true. Otherwise, return false. */ | |
6043 | ||
6044 | static bool | |
ed2dc618 | 6045 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 6046 | { |
ed2dc618 SM |
6047 | mapped_debug_names local_map (dwarf2_per_objfile); |
6048 | mapped_debug_names dwz_map (dwarf2_per_objfile); | |
6049 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
6050 | |
6051 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
6052 | &dwarf2_per_objfile->debug_names, | |
6053 | local_map)) | |
6054 | return false; | |
6055 | ||
6056 | /* Don't use the index if it's empty. */ | |
6057 | if (local_map.name_count == 0) | |
6058 | return false; | |
6059 | ||
6060 | /* If there is a .dwz file, read it so we can get its CU list as | |
6061 | well. */ | |
ed2dc618 | 6062 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
6063 | if (dwz != NULL) |
6064 | { | |
6065 | if (!read_debug_names_from_section (objfile, | |
6066 | bfd_get_filename (dwz->dwz_bfd), | |
6067 | &dwz->debug_names, dwz_map)) | |
6068 | { | |
6069 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
6070 | bfd_get_filename (dwz->dwz_bfd)); | |
6071 | return false; | |
6072 | } | |
6073 | } | |
6074 | ||
ed2dc618 | 6075 | create_cus_from_debug_names (dwarf2_per_objfile, local_map, dwz_map); |
927aa2e7 JK |
6076 | |
6077 | if (local_map.tu_count != 0) | |
6078 | { | |
6079 | /* We can only handle a single .debug_types when we have an | |
6080 | index. */ | |
6081 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
6082 | return false; | |
6083 | ||
6084 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
6085 | dwarf2_per_objfile->types, 0); | |
6086 | ||
6087 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 6088 | (dwarf2_per_objfile, local_map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
6089 | } |
6090 | ||
ed2dc618 SM |
6091 | create_addrmap_from_aranges (dwarf2_per_objfile, |
6092 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 6093 | |
ed2dc618 SM |
6094 | dwarf2_per_objfile->debug_names_table.reset |
6095 | (new mapped_debug_names (dwarf2_per_objfile)); | |
927aa2e7 JK |
6096 | *dwarf2_per_objfile->debug_names_table = std::move (local_map); |
6097 | dwarf2_per_objfile->using_index = 1; | |
6098 | dwarf2_per_objfile->quick_file_names_table = | |
6099 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
6100 | ||
6101 | return true; | |
6102 | } | |
6103 | ||
6104 | /* Symbol name hashing function as specified by DWARF-5. */ | |
6105 | ||
6106 | static uint32_t | |
6107 | dwarf5_djb_hash (const char *str_) | |
6108 | { | |
6109 | const unsigned char *str = (const unsigned char *) str_; | |
6110 | ||
6111 | /* Note: tolower here ignores UTF-8, which isn't fully compliant. | |
6112 | See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */ | |
6113 | ||
6114 | uint32_t hash = 5381; | |
6115 | while (int c = *str++) | |
6116 | hash = hash * 33 + tolower (c); | |
6117 | return hash; | |
6118 | } | |
6119 | ||
6120 | /* Type used to manage iterating over all CUs looking for a symbol for | |
6121 | .debug_names. */ | |
6122 | ||
6123 | class dw2_debug_names_iterator | |
6124 | { | |
6125 | public: | |
6126 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
6127 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
6128 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
6129 | bool want_specific_block, | |
6130 | block_enum block_index, domain_enum domain, | |
6131 | const char *name) | |
6132 | : m_map (map), m_want_specific_block (want_specific_block), | |
6133 | m_block_index (block_index), m_domain (domain), | |
6134 | m_addr (find_vec_in_debug_names (map, name)) | |
6135 | {} | |
6136 | ||
6137 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
6138 | search_domain search, uint32_t namei) | |
6139 | : m_map (map), | |
6140 | m_search (search), | |
6141 | m_addr (find_vec_in_debug_names (map, namei)) | |
6142 | {} | |
6143 | ||
6144 | /* Return the next matching CU or NULL if there are no more. */ | |
6145 | dwarf2_per_cu_data *next (); | |
6146 | ||
6147 | private: | |
6148 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
6149 | const char *name); | |
6150 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
6151 | uint32_t namei); | |
6152 | ||
6153 | /* The internalized form of .debug_names. */ | |
6154 | const mapped_debug_names &m_map; | |
6155 | ||
6156 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
6157 | const bool m_want_specific_block = false; | |
6158 | ||
6159 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
6160 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
6161 | value. */ | |
6162 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
6163 | ||
6164 | /* The kind of symbol we're looking for. */ | |
6165 | const domain_enum m_domain = UNDEF_DOMAIN; | |
6166 | const search_domain m_search = ALL_DOMAIN; | |
6167 | ||
6168 | /* The list of CUs from the index entry of the symbol, or NULL if | |
6169 | not found. */ | |
6170 | const gdb_byte *m_addr; | |
6171 | }; | |
6172 | ||
6173 | const char * | |
6174 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
6175 | { | |
6176 | const ULONGEST namei_string_offs | |
6177 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
6178 | + namei * offset_size), | |
6179 | offset_size, | |
6180 | dwarf5_byte_order); | |
6181 | return read_indirect_string_at_offset | |
ed2dc618 | 6182 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
6183 | } |
6184 | ||
6185 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
6186 | found, return pointer to its pool data. If NAME cannot be found, | |
6187 | return NULL. */ | |
6188 | ||
6189 | const gdb_byte * | |
6190 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6191 | (const mapped_debug_names &map, const char *name) | |
6192 | { | |
6193 | int (*cmp) (const char *, const char *); | |
6194 | ||
6195 | if (current_language->la_language == language_cplus | |
6196 | || current_language->la_language == language_fortran | |
6197 | || current_language->la_language == language_d) | |
6198 | { | |
6199 | /* NAME is already canonical. Drop any qualifiers as | |
6200 | .debug_names does not contain any. */ | |
6201 | ||
6202 | if (strchr (name, '(') != NULL) | |
6203 | { | |
6204 | gdb::unique_xmalloc_ptr<char> without_params | |
6205 | = cp_remove_params (name); | |
6206 | ||
6207 | if (without_params != NULL) | |
6208 | { | |
6209 | name = without_params.get(); | |
6210 | } | |
6211 | } | |
6212 | } | |
6213 | ||
6214 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
6215 | ||
6216 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
6217 | uint32_t namei | |
6218 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6219 | (map.bucket_table_reordered | |
6220 | + (full_hash % map.bucket_count)), 4, | |
6221 | map.dwarf5_byte_order); | |
6222 | if (namei == 0) | |
6223 | return NULL; | |
6224 | --namei; | |
6225 | if (namei >= map.name_count) | |
6226 | { | |
6227 | complaint (&symfile_complaints, | |
6228 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6229 | "[in module %s]"), | |
6230 | namei, map.name_count, | |
ed2dc618 | 6231 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
6232 | return NULL; |
6233 | } | |
6234 | ||
6235 | for (;;) | |
6236 | { | |
6237 | const uint32_t namei_full_hash | |
6238 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6239 | (map.hash_table_reordered + namei), 4, | |
6240 | map.dwarf5_byte_order); | |
6241 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
6242 | return NULL; | |
6243 | ||
6244 | if (full_hash == namei_full_hash) | |
6245 | { | |
6246 | const char *const namei_string = map.namei_to_name (namei); | |
6247 | ||
6248 | #if 0 /* An expensive sanity check. */ | |
6249 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
6250 | { | |
6251 | complaint (&symfile_complaints, | |
6252 | _("Wrong .debug_names hash for string at index %u " | |
6253 | "[in module %s]"), | |
6254 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
6255 | return NULL; | |
6256 | } | |
6257 | #endif | |
6258 | ||
6259 | if (cmp (namei_string, name) == 0) | |
6260 | { | |
6261 | const ULONGEST namei_entry_offs | |
6262 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6263 | + namei * map.offset_size), | |
6264 | map.offset_size, map.dwarf5_byte_order); | |
6265 | return map.entry_pool + namei_entry_offs; | |
6266 | } | |
6267 | } | |
6268 | ||
6269 | ++namei; | |
6270 | if (namei >= map.name_count) | |
6271 | return NULL; | |
6272 | } | |
6273 | } | |
6274 | ||
6275 | const gdb_byte * | |
6276 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6277 | (const mapped_debug_names &map, uint32_t namei) | |
6278 | { | |
6279 | if (namei >= map.name_count) | |
6280 | { | |
6281 | complaint (&symfile_complaints, | |
6282 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6283 | "[in module %s]"), | |
6284 | namei, map.name_count, | |
ed2dc618 | 6285 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
6286 | return NULL; |
6287 | } | |
6288 | ||
6289 | const ULONGEST namei_entry_offs | |
6290 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6291 | + namei * map.offset_size), | |
6292 | map.offset_size, map.dwarf5_byte_order); | |
6293 | return map.entry_pool + namei_entry_offs; | |
6294 | } | |
6295 | ||
6296 | /* See dw2_debug_names_iterator. */ | |
6297 | ||
6298 | dwarf2_per_cu_data * | |
6299 | dw2_debug_names_iterator::next () | |
6300 | { | |
6301 | if (m_addr == NULL) | |
6302 | return NULL; | |
6303 | ||
ed2dc618 SM |
6304 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
6305 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6306 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
6307 | |
6308 | again: | |
6309 | ||
6310 | unsigned int bytes_read; | |
6311 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6312 | m_addr += bytes_read; | |
6313 | if (abbrev == 0) | |
6314 | return NULL; | |
6315 | ||
6316 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
6317 | if (indexval_it == m_map.abbrev_map.cend ()) | |
6318 | { | |
6319 | complaint (&symfile_complaints, | |
6320 | _("Wrong .debug_names undefined abbrev code %s " | |
6321 | "[in module %s]"), | |
ed2dc618 | 6322 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
6323 | return NULL; |
6324 | } | |
6325 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
6326 | bool have_is_static = false; | |
6327 | bool is_static; | |
6328 | dwarf2_per_cu_data *per_cu = NULL; | |
6329 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
6330 | { | |
6331 | ULONGEST ull; | |
6332 | switch (attr.form) | |
6333 | { | |
6334 | case DW_FORM_implicit_const: | |
6335 | ull = attr.implicit_const; | |
6336 | break; | |
6337 | case DW_FORM_flag_present: | |
6338 | ull = 1; | |
6339 | break; | |
6340 | case DW_FORM_udata: | |
6341 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6342 | m_addr += bytes_read; | |
6343 | break; | |
6344 | default: | |
6345 | complaint (&symfile_complaints, | |
6346 | _("Unsupported .debug_names form %s [in module %s]"), | |
6347 | dwarf_form_name (attr.form), | |
ed2dc618 | 6348 | objfile_name (objfile)); |
927aa2e7 JK |
6349 | return NULL; |
6350 | } | |
6351 | switch (attr.dw_idx) | |
6352 | { | |
6353 | case DW_IDX_compile_unit: | |
6354 | /* Don't crash on bad data. */ | |
8af5c486 | 6355 | if (ull >= dwarf2_per_objfile->n_comp_units) |
927aa2e7 JK |
6356 | { |
6357 | complaint (&symfile_complaints, | |
6358 | _(".debug_names entry has bad CU index %s" | |
6359 | " [in module %s]"), | |
6360 | pulongest (ull), | |
6361 | objfile_name (dwarf2_per_objfile->objfile)); | |
6362 | continue; | |
6363 | } | |
ed2dc618 | 6364 | per_cu = dw2_get_cutu (dwarf2_per_objfile, ull); |
927aa2e7 | 6365 | break; |
8af5c486 JK |
6366 | case DW_IDX_type_unit: |
6367 | /* Don't crash on bad data. */ | |
6368 | if (ull >= dwarf2_per_objfile->n_type_units) | |
6369 | { | |
6370 | complaint (&symfile_complaints, | |
6371 | _(".debug_names entry has bad TU index %s" | |
6372 | " [in module %s]"), | |
6373 | pulongest (ull), | |
6374 | objfile_name (dwarf2_per_objfile->objfile)); | |
6375 | continue; | |
6376 | } | |
ed2dc618 SM |
6377 | per_cu = dw2_get_cutu (dwarf2_per_objfile, |
6378 | dwarf2_per_objfile->n_comp_units + ull); | |
8af5c486 | 6379 | break; |
927aa2e7 JK |
6380 | case DW_IDX_GNU_internal: |
6381 | if (!m_map.augmentation_is_gdb) | |
6382 | break; | |
6383 | have_is_static = true; | |
6384 | is_static = true; | |
6385 | break; | |
6386 | case DW_IDX_GNU_external: | |
6387 | if (!m_map.augmentation_is_gdb) | |
6388 | break; | |
6389 | have_is_static = true; | |
6390 | is_static = false; | |
6391 | break; | |
6392 | } | |
6393 | } | |
6394 | ||
6395 | /* Skip if already read in. */ | |
6396 | if (per_cu->v.quick->compunit_symtab) | |
6397 | goto again; | |
6398 | ||
6399 | /* Check static vs global. */ | |
6400 | if (have_is_static) | |
6401 | { | |
6402 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
6403 | if (m_want_specific_block && want_static != is_static) | |
6404 | goto again; | |
6405 | } | |
6406 | ||
6407 | /* Match dw2_symtab_iter_next, symbol_kind | |
6408 | and debug_names::psymbol_tag. */ | |
6409 | switch (m_domain) | |
6410 | { | |
6411 | case VAR_DOMAIN: | |
6412 | switch (indexval.dwarf_tag) | |
6413 | { | |
6414 | case DW_TAG_variable: | |
6415 | case DW_TAG_subprogram: | |
6416 | /* Some types are also in VAR_DOMAIN. */ | |
6417 | case DW_TAG_typedef: | |
6418 | case DW_TAG_structure_type: | |
6419 | break; | |
6420 | default: | |
6421 | goto again; | |
6422 | } | |
6423 | break; | |
6424 | case STRUCT_DOMAIN: | |
6425 | switch (indexval.dwarf_tag) | |
6426 | { | |
6427 | case DW_TAG_typedef: | |
6428 | case DW_TAG_structure_type: | |
6429 | break; | |
6430 | default: | |
6431 | goto again; | |
6432 | } | |
6433 | break; | |
6434 | case LABEL_DOMAIN: | |
6435 | switch (indexval.dwarf_tag) | |
6436 | { | |
6437 | case 0: | |
6438 | case DW_TAG_variable: | |
6439 | break; | |
6440 | default: | |
6441 | goto again; | |
6442 | } | |
6443 | break; | |
6444 | default: | |
6445 | break; | |
6446 | } | |
6447 | ||
6448 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6449 | debug_names::psymbol_tag. */ | |
6450 | switch (m_search) | |
4b514bc8 | 6451 | { |
927aa2e7 JK |
6452 | case VARIABLES_DOMAIN: |
6453 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6454 | { |
927aa2e7 JK |
6455 | case DW_TAG_variable: |
6456 | break; | |
6457 | default: | |
6458 | goto again; | |
4b514bc8 | 6459 | } |
927aa2e7 JK |
6460 | break; |
6461 | case FUNCTIONS_DOMAIN: | |
6462 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6463 | { |
927aa2e7 JK |
6464 | case DW_TAG_subprogram: |
6465 | break; | |
6466 | default: | |
6467 | goto again; | |
4b514bc8 | 6468 | } |
927aa2e7 JK |
6469 | break; |
6470 | case TYPES_DOMAIN: | |
6471 | switch (indexval.dwarf_tag) | |
6472 | { | |
6473 | case DW_TAG_typedef: | |
6474 | case DW_TAG_structure_type: | |
6475 | break; | |
6476 | default: | |
6477 | goto again; | |
6478 | } | |
6479 | break; | |
6480 | default: | |
6481 | break; | |
4b514bc8 | 6482 | } |
927aa2e7 JK |
6483 | |
6484 | return per_cu; | |
4b514bc8 | 6485 | } |
61920122 | 6486 | |
927aa2e7 JK |
6487 | static struct compunit_symtab * |
6488 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6489 | const char *name, domain_enum domain) | |
4b514bc8 | 6490 | { |
927aa2e7 | 6491 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6492 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6493 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6494 | |
927aa2e7 JK |
6495 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6496 | if (!mapp) | |
61920122 | 6497 | { |
927aa2e7 JK |
6498 | /* index is NULL if OBJF_READNOW. */ |
6499 | return NULL; | |
6500 | } | |
6501 | const auto &map = *mapp; | |
9291a0cd | 6502 | |
927aa2e7 JK |
6503 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6504 | block_index, domain, name); | |
9703b513 | 6505 | |
927aa2e7 JK |
6506 | struct compunit_symtab *stab_best = NULL; |
6507 | struct dwarf2_per_cu_data *per_cu; | |
6508 | while ((per_cu = iter.next ()) != NULL) | |
6509 | { | |
6510 | struct symbol *sym, *with_opaque = NULL; | |
6511 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
6512 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
6513 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6514 | |
927aa2e7 JK |
6515 | sym = block_find_symbol (block, name, domain, |
6516 | block_find_non_opaque_type_preferred, | |
6517 | &with_opaque); | |
9703b513 | 6518 | |
927aa2e7 JK |
6519 | /* Some caution must be observed with overloaded functions and |
6520 | methods, since the index will not contain any overload | |
6521 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6522 | |
927aa2e7 JK |
6523 | if (sym != NULL |
6524 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6525 | return stab; | |
6526 | if (with_opaque != NULL | |
6527 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6528 | stab_best = stab; | |
9703b513 | 6529 | |
927aa2e7 | 6530 | /* Keep looking through other CUs. */ |
9703b513 TT |
6531 | } |
6532 | ||
927aa2e7 | 6533 | return stab_best; |
9703b513 TT |
6534 | } |
6535 | ||
927aa2e7 JK |
6536 | /* This dumps minimal information about .debug_names. It is called |
6537 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6538 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6539 | |
927aa2e7 JK |
6540 | static void |
6541 | dw2_debug_names_dump (struct objfile *objfile) | |
6542 | { | |
ed2dc618 SM |
6543 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6544 | = get_dwarf2_per_objfile (objfile); | |
6545 | ||
927aa2e7 JK |
6546 | gdb_assert (dwarf2_per_objfile->using_index); |
6547 | printf_filtered (".debug_names:"); | |
6548 | if (dwarf2_per_objfile->debug_names_table) | |
6549 | printf_filtered (" exists\n"); | |
6550 | else | |
6551 | printf_filtered (" faked for \"readnow\"\n"); | |
6552 | printf_filtered ("\n"); | |
9291a0cd TT |
6553 | } |
6554 | ||
9291a0cd | 6555 | static void |
927aa2e7 JK |
6556 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6557 | const char *func_name) | |
9291a0cd | 6558 | { |
ed2dc618 SM |
6559 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6560 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6561 | |
927aa2e7 JK |
6562 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6563 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6564 | { |
927aa2e7 | 6565 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6566 | |
927aa2e7 JK |
6567 | /* Note: It doesn't matter what we pass for block_index here. */ |
6568 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6569 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6570 | |
927aa2e7 JK |
6571 | struct dwarf2_per_cu_data *per_cu; |
6572 | while ((per_cu = iter.next ()) != NULL) | |
6573 | dw2_instantiate_symtab (per_cu); | |
6574 | } | |
6575 | } | |
24c79950 | 6576 | |
927aa2e7 JK |
6577 | static void |
6578 | dw2_debug_names_expand_symtabs_matching | |
6579 | (struct objfile *objfile, | |
6580 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6581 | const lookup_name_info &lookup_name, | |
6582 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6583 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6584 | enum search_domain kind) | |
6585 | { | |
ed2dc618 SM |
6586 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6587 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6588 | |
927aa2e7 JK |
6589 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6590 | if (!dwarf2_per_objfile->debug_names_table) | |
6591 | return; | |
9291a0cd | 6592 | |
ed2dc618 | 6593 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6594 | |
44ed8f3e | 6595 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6596 | |
44ed8f3e PA |
6597 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6598 | symbol_matcher, | |
6599 | kind, [&] (offset_type namei) | |
927aa2e7 | 6600 | { |
927aa2e7 JK |
6601 | /* The name was matched, now expand corresponding CUs that were |
6602 | marked. */ | |
6603 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6604 | |
927aa2e7 JK |
6605 | struct dwarf2_per_cu_data *per_cu; |
6606 | while ((per_cu = iter.next ()) != NULL) | |
6607 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6608 | expansion_notify); | |
44ed8f3e | 6609 | }); |
9291a0cd TT |
6610 | } |
6611 | ||
927aa2e7 | 6612 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6613 | { |
6614 | dw2_has_symbols, | |
6615 | dw2_find_last_source_symtab, | |
6616 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6617 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6618 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6619 | dw2_print_stats, |
927aa2e7 | 6620 | dw2_debug_names_dump, |
9291a0cd | 6621 | dw2_relocate, |
927aa2e7 | 6622 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6623 | dw2_expand_all_symtabs, |
652a8996 | 6624 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6625 | dw2_map_matching_symbols, |
927aa2e7 | 6626 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6627 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6628 | NULL, |
9291a0cd TT |
6629 | dw2_map_symbol_filenames |
6630 | }; | |
6631 | ||
3c0aa29a | 6632 | /* See symfile.h. */ |
9291a0cd | 6633 | |
3c0aa29a PA |
6634 | bool |
6635 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6636 | { |
ed2dc618 SM |
6637 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6638 | = get_dwarf2_per_objfile (objfile); | |
6639 | ||
9291a0cd TT |
6640 | /* If we're about to read full symbols, don't bother with the |
6641 | indices. In this case we also don't care if some other debug | |
6642 | format is making psymtabs, because they are all about to be | |
6643 | expanded anyway. */ | |
6644 | if ((objfile->flags & OBJF_READNOW)) | |
6645 | { | |
6646 | int i; | |
6647 | ||
6648 | dwarf2_per_objfile->using_index = 1; | |
ed2dc618 SM |
6649 | create_all_comp_units (dwarf2_per_objfile); |
6650 | create_all_type_units (dwarf2_per_objfile); | |
7b9f3c50 DE |
6651 | dwarf2_per_objfile->quick_file_names_table = |
6652 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 6653 | |
1fd400ff | 6654 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 6655 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 6656 | { |
ed2dc618 | 6657 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
9291a0cd | 6658 | |
e254ef6a DE |
6659 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6660 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6661 | } |
6662 | ||
6663 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6664 | these functions will be no-ops because we will have expanded | |
6665 | all symtabs. */ | |
3c0aa29a PA |
6666 | *index_kind = dw_index_kind::GDB_INDEX; |
6667 | return true; | |
9291a0cd TT |
6668 | } |
6669 | ||
ed2dc618 | 6670 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6671 | { |
6672 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6673 | return true; | |
6674 | } | |
927aa2e7 | 6675 | |
9291a0cd | 6676 | if (dwarf2_read_index (objfile)) |
3c0aa29a PA |
6677 | { |
6678 | *index_kind = dw_index_kind::GDB_INDEX; | |
6679 | return true; | |
6680 | } | |
9291a0cd | 6681 | |
3c0aa29a | 6682 | return false; |
9291a0cd TT |
6683 | } |
6684 | ||
6685 | \f | |
6686 | ||
dce234bc PP |
6687 | /* Build a partial symbol table. */ |
6688 | ||
6689 | void | |
f29dff0a | 6690 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6691 | { |
ed2dc618 SM |
6692 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6693 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6694 | |
af5bf4ad SM |
6695 | if (objfile->global_psymbols.capacity () == 0 |
6696 | && objfile->static_psymbols.capacity () == 0) | |
6697 | init_psymbol_list (objfile, 1024); | |
c906108c | 6698 | |
492d29ea | 6699 | TRY |
c9bf0622 TT |
6700 | { |
6701 | /* This isn't really ideal: all the data we allocate on the | |
6702 | objfile's obstack is still uselessly kept around. However, | |
6703 | freeing it seems unsafe. */ | |
906768f9 | 6704 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6705 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6706 | psymtabs.keep (); |
c9bf0622 | 6707 | } |
492d29ea PA |
6708 | CATCH (except, RETURN_MASK_ERROR) |
6709 | { | |
6710 | exception_print (gdb_stderr, except); | |
6711 | } | |
6712 | END_CATCH | |
c906108c | 6713 | } |
c906108c | 6714 | |
1ce1cefd DE |
6715 | /* Return the total length of the CU described by HEADER. */ |
6716 | ||
6717 | static unsigned int | |
6718 | get_cu_length (const struct comp_unit_head *header) | |
6719 | { | |
6720 | return header->initial_length_size + header->length; | |
6721 | } | |
6722 | ||
9c541725 | 6723 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6724 | |
9c541725 PA |
6725 | static inline bool |
6726 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6727 | { |
9c541725 PA |
6728 | sect_offset bottom = cu_header->sect_off; |
6729 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6730 | |
9c541725 | 6731 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6732 | } |
6733 | ||
3b80fe9b DE |
6734 | /* Find the base address of the compilation unit for range lists and |
6735 | location lists. It will normally be specified by DW_AT_low_pc. | |
6736 | In DWARF-3 draft 4, the base address could be overridden by | |
6737 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6738 | compilation units with discontinuous ranges. */ | |
6739 | ||
6740 | static void | |
6741 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6742 | { | |
6743 | struct attribute *attr; | |
6744 | ||
6745 | cu->base_known = 0; | |
6746 | cu->base_address = 0; | |
6747 | ||
6748 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6749 | if (attr) | |
6750 | { | |
31aa7e4e | 6751 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6752 | cu->base_known = 1; |
6753 | } | |
6754 | else | |
6755 | { | |
6756 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6757 | if (attr) | |
6758 | { | |
31aa7e4e | 6759 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6760 | cu->base_known = 1; |
6761 | } | |
6762 | } | |
6763 | } | |
6764 | ||
93311388 | 6765 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6766 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6767 | NOTE: This leaves members offset, first_die_offset to be filled in |
6768 | by the caller. */ | |
107d2387 | 6769 | |
d521ce57 | 6770 | static const gdb_byte * |
107d2387 | 6771 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6772 | const gdb_byte *info_ptr, |
6773 | struct dwarf2_section_info *section, | |
6774 | rcuh_kind section_kind) | |
107d2387 AC |
6775 | { |
6776 | int signed_addr; | |
891d2f0b | 6777 | unsigned int bytes_read; |
43988095 JK |
6778 | const char *filename = get_section_file_name (section); |
6779 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6780 | |
6781 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6782 | cu_header->initial_length_size = bytes_read; | |
6783 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6784 | info_ptr += bytes_read; |
107d2387 AC |
6785 | cu_header->version = read_2_bytes (abfd, info_ptr); |
6786 | info_ptr += 2; | |
43988095 JK |
6787 | if (cu_header->version < 5) |
6788 | switch (section_kind) | |
6789 | { | |
6790 | case rcuh_kind::COMPILE: | |
6791 | cu_header->unit_type = DW_UT_compile; | |
6792 | break; | |
6793 | case rcuh_kind::TYPE: | |
6794 | cu_header->unit_type = DW_UT_type; | |
6795 | break; | |
6796 | default: | |
6797 | internal_error (__FILE__, __LINE__, | |
6798 | _("read_comp_unit_head: invalid section_kind")); | |
6799 | } | |
6800 | else | |
6801 | { | |
6802 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6803 | (read_1_byte (abfd, info_ptr)); | |
6804 | info_ptr += 1; | |
6805 | switch (cu_header->unit_type) | |
6806 | { | |
6807 | case DW_UT_compile: | |
6808 | if (section_kind != rcuh_kind::COMPILE) | |
6809 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6810 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6811 | filename); | |
6812 | break; | |
6813 | case DW_UT_type: | |
6814 | section_kind = rcuh_kind::TYPE; | |
6815 | break; | |
6816 | default: | |
6817 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6818 | "(is %d, should be %d or %d) [in module %s]"), | |
6819 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6820 | } | |
6821 | ||
6822 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6823 | info_ptr += 1; | |
6824 | } | |
9c541725 PA |
6825 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6826 | cu_header, | |
6827 | &bytes_read); | |
613e1657 | 6828 | info_ptr += bytes_read; |
43988095 JK |
6829 | if (cu_header->version < 5) |
6830 | { | |
6831 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6832 | info_ptr += 1; | |
6833 | } | |
107d2387 AC |
6834 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6835 | if (signed_addr < 0) | |
8e65ff28 | 6836 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6837 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6838 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6839 | |
43988095 JK |
6840 | if (section_kind == rcuh_kind::TYPE) |
6841 | { | |
6842 | LONGEST type_offset; | |
6843 | ||
6844 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6845 | info_ptr += 8; | |
6846 | ||
6847 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6848 | info_ptr += bytes_read; | |
9c541725 PA |
6849 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6850 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6851 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6852 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6853 | filename); | |
6854 | } | |
6855 | ||
107d2387 AC |
6856 | return info_ptr; |
6857 | } | |
6858 | ||
36586728 TT |
6859 | /* Helper function that returns the proper abbrev section for |
6860 | THIS_CU. */ | |
6861 | ||
6862 | static struct dwarf2_section_info * | |
6863 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6864 | { | |
6865 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6866 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6867 | |
6868 | if (this_cu->is_dwz) | |
ed2dc618 | 6869 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6870 | else |
6871 | abbrev = &dwarf2_per_objfile->abbrev; | |
6872 | ||
6873 | return abbrev; | |
6874 | } | |
6875 | ||
9ff913ba DE |
6876 | /* Subroutine of read_and_check_comp_unit_head and |
6877 | read_and_check_type_unit_head to simplify them. | |
6878 | Perform various error checking on the header. */ | |
6879 | ||
6880 | static void | |
ed2dc618 SM |
6881 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6882 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6883 | struct dwarf2_section_info *section, |
6884 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6885 | { |
a32a8923 | 6886 | const char *filename = get_section_file_name (section); |
9ff913ba | 6887 | |
43988095 | 6888 | if (header->version < 2 || header->version > 5) |
9ff913ba | 6889 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 6890 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
6891 | filename); |
6892 | ||
9c541725 | 6893 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6894 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6895 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6896 | "(offset %s + 6) [in module %s]"), | |
6897 | sect_offset_str (header->abbrev_sect_off), | |
6898 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6899 | filename); |
6900 | ||
9c541725 | 6901 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6902 | avoid potential 32-bit overflow. */ |
9c541725 | 6903 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6904 | > section->size) |
9c541725 | 6905 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6906 | "(offset %s + 0) [in module %s]"), |
6907 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6908 | filename); |
6909 | } | |
6910 | ||
6911 | /* Read in a CU/TU header and perform some basic error checking. | |
6912 | The contents of the header are stored in HEADER. | |
6913 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6914 | |
d521ce57 | 6915 | static const gdb_byte * |
ed2dc618 SM |
6916 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6917 | struct comp_unit_head *header, | |
9ff913ba | 6918 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6919 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6920 | const gdb_byte *info_ptr, |
43988095 | 6921 | rcuh_kind section_kind) |
72bf9492 | 6922 | { |
d521ce57 | 6923 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6924 | |
9c541725 | 6925 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6926 | |
43988095 | 6927 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6928 | |
9c541725 | 6929 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6930 | |
ed2dc618 SM |
6931 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6932 | abbrev_section); | |
9ff913ba DE |
6933 | |
6934 | return info_ptr; | |
348e048f DE |
6935 | } |
6936 | ||
f4dc4d17 DE |
6937 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6938 | ||
6939 | static sect_offset | |
ed2dc618 SM |
6940 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6941 | struct dwarf2_section_info *section, | |
9c541725 | 6942 | sect_offset sect_off) |
f4dc4d17 | 6943 | { |
a32a8923 | 6944 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6945 | const gdb_byte *info_ptr; |
ac298888 | 6946 | unsigned int initial_length_size, offset_size; |
43988095 | 6947 | uint16_t version; |
f4dc4d17 DE |
6948 | |
6949 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6950 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6951 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6952 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6953 | info_ptr += initial_length_size; |
6954 | ||
6955 | version = read_2_bytes (abfd, info_ptr); | |
6956 | info_ptr += 2; | |
6957 | if (version >= 5) | |
6958 | { | |
6959 | /* Skip unit type and address size. */ | |
6960 | info_ptr += 2; | |
6961 | } | |
6962 | ||
9c541725 | 6963 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6964 | } |
6965 | ||
aaa75496 JB |
6966 | /* Allocate a new partial symtab for file named NAME and mark this new |
6967 | partial symtab as being an include of PST. */ | |
6968 | ||
6969 | static void | |
d521ce57 | 6970 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6971 | struct objfile *objfile) |
6972 | { | |
6973 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6974 | ||
fbd9ab74 JK |
6975 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6976 | { | |
6977 | /* It shares objfile->objfile_obstack. */ | |
6978 | subpst->dirname = pst->dirname; | |
6979 | } | |
6980 | ||
aaa75496 JB |
6981 | subpst->textlow = 0; |
6982 | subpst->texthigh = 0; | |
6983 | ||
8d749320 SM |
6984 | subpst->dependencies |
6985 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6986 | subpst->dependencies[0] = pst; |
6987 | subpst->number_of_dependencies = 1; | |
6988 | ||
6989 | subpst->globals_offset = 0; | |
6990 | subpst->n_global_syms = 0; | |
6991 | subpst->statics_offset = 0; | |
6992 | subpst->n_static_syms = 0; | |
43f3e411 | 6993 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6994 | subpst->read_symtab = pst->read_symtab; |
6995 | subpst->readin = 0; | |
6996 | ||
6997 | /* No private part is necessary for include psymtabs. This property | |
6998 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6999 | the regular ones. */ |
58a9656e | 7000 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
7001 | } |
7002 | ||
7003 | /* Read the Line Number Program data and extract the list of files | |
7004 | included by the source file represented by PST. Build an include | |
d85a05f0 | 7005 | partial symtab for each of these included files. */ |
aaa75496 JB |
7006 | |
7007 | static void | |
7008 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
7009 | struct die_info *die, |
7010 | struct partial_symtab *pst) | |
aaa75496 | 7011 | { |
fff8551c | 7012 | line_header_up lh; |
d85a05f0 | 7013 | struct attribute *attr; |
aaa75496 | 7014 | |
d85a05f0 DJ |
7015 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
7016 | if (attr) | |
9c541725 | 7017 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
7018 | if (lh == NULL) |
7019 | return; /* No linetable, so no includes. */ | |
7020 | ||
c6da4cef | 7021 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 7022 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
7023 | } |
7024 | ||
348e048f | 7025 | static hashval_t |
52dc124a | 7026 | hash_signatured_type (const void *item) |
348e048f | 7027 | { |
9a3c8263 SM |
7028 | const struct signatured_type *sig_type |
7029 | = (const struct signatured_type *) item; | |
9a619af0 | 7030 | |
348e048f | 7031 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 7032 | return sig_type->signature; |
348e048f DE |
7033 | } |
7034 | ||
7035 | static int | |
52dc124a | 7036 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 7037 | { |
9a3c8263 SM |
7038 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
7039 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 7040 | |
348e048f DE |
7041 | return lhs->signature == rhs->signature; |
7042 | } | |
7043 | ||
1fd400ff TT |
7044 | /* Allocate a hash table for signatured types. */ |
7045 | ||
7046 | static htab_t | |
673bfd45 | 7047 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
7048 | { |
7049 | return htab_create_alloc_ex (41, | |
52dc124a DE |
7050 | hash_signatured_type, |
7051 | eq_signatured_type, | |
1fd400ff TT |
7052 | NULL, |
7053 | &objfile->objfile_obstack, | |
7054 | hashtab_obstack_allocate, | |
7055 | dummy_obstack_deallocate); | |
7056 | } | |
7057 | ||
d467dd73 | 7058 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
7059 | |
7060 | static int | |
d467dd73 | 7061 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 7062 | { |
9a3c8263 SM |
7063 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
7064 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 7065 | |
b4dd5633 | 7066 | **datap = sigt; |
1fd400ff TT |
7067 | ++*datap; |
7068 | ||
7069 | return 1; | |
7070 | } | |
7071 | ||
78d4d2c5 | 7072 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
7073 | and fill them into TYPES_HTAB. It will process only type units, |
7074 | therefore DW_UT_type. */ | |
c88ee1f0 | 7075 | |
78d4d2c5 | 7076 | static void |
ed2dc618 SM |
7077 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7078 | struct dwo_file *dwo_file, | |
43988095 JK |
7079 | dwarf2_section_info *section, htab_t &types_htab, |
7080 | rcuh_kind section_kind) | |
348e048f | 7081 | { |
3019eac3 | 7082 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 7083 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
7084 | bfd *abfd; |
7085 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 7086 | |
4bdcc0c1 DE |
7087 | abbrev_section = (dwo_file != NULL |
7088 | ? &dwo_file->sections.abbrev | |
7089 | : &dwarf2_per_objfile->abbrev); | |
7090 | ||
b4f54984 | 7091 | if (dwarf_read_debug) |
43988095 JK |
7092 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
7093 | get_section_name (section), | |
a32a8923 | 7094 | get_section_file_name (abbrev_section)); |
09406207 | 7095 | |
78d4d2c5 JK |
7096 | dwarf2_read_section (objfile, section); |
7097 | info_ptr = section->buffer; | |
348e048f | 7098 | |
78d4d2c5 JK |
7099 | if (info_ptr == NULL) |
7100 | return; | |
348e048f | 7101 | |
78d4d2c5 JK |
7102 | /* We can't set abfd until now because the section may be empty or |
7103 | not present, in which case the bfd is unknown. */ | |
7104 | abfd = get_section_bfd_owner (section); | |
348e048f | 7105 | |
78d4d2c5 JK |
7106 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
7107 | because we don't need to read any dies: the signature is in the | |
7108 | header. */ | |
3019eac3 | 7109 | |
78d4d2c5 JK |
7110 | end_ptr = info_ptr + section->size; |
7111 | while (info_ptr < end_ptr) | |
7112 | { | |
78d4d2c5 JK |
7113 | struct signatured_type *sig_type; |
7114 | struct dwo_unit *dwo_tu; | |
7115 | void **slot; | |
7116 | const gdb_byte *ptr = info_ptr; | |
7117 | struct comp_unit_head header; | |
7118 | unsigned int length; | |
8b70b953 | 7119 | |
9c541725 | 7120 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 7121 | |
a49dd8dd JK |
7122 | /* Initialize it due to a false compiler warning. */ |
7123 | header.signature = -1; | |
9c541725 | 7124 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 7125 | |
78d4d2c5 JK |
7126 | /* We need to read the type's signature in order to build the hash |
7127 | table, but we don't need anything else just yet. */ | |
348e048f | 7128 | |
ed2dc618 | 7129 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 7130 | abbrev_section, ptr, section_kind); |
348e048f | 7131 | |
78d4d2c5 | 7132 | length = get_cu_length (&header); |
6caca83c | 7133 | |
78d4d2c5 JK |
7134 | /* Skip dummy type units. */ |
7135 | if (ptr >= info_ptr + length | |
43988095 JK |
7136 | || peek_abbrev_code (abfd, ptr) == 0 |
7137 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
7138 | { |
7139 | info_ptr += length; | |
7140 | continue; | |
7141 | } | |
dee91e82 | 7142 | |
78d4d2c5 JK |
7143 | if (types_htab == NULL) |
7144 | { | |
7145 | if (dwo_file) | |
7146 | types_htab = allocate_dwo_unit_table (objfile); | |
7147 | else | |
7148 | types_htab = allocate_signatured_type_table (objfile); | |
7149 | } | |
8b70b953 | 7150 | |
78d4d2c5 JK |
7151 | if (dwo_file) |
7152 | { | |
7153 | sig_type = NULL; | |
7154 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7155 | struct dwo_unit); | |
7156 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 7157 | dwo_tu->signature = header.signature; |
9c541725 | 7158 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 7159 | dwo_tu->section = section; |
9c541725 | 7160 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
7161 | dwo_tu->length = length; |
7162 | } | |
7163 | else | |
7164 | { | |
7165 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
7166 | The real type_offset is in the DWO file. */ | |
7167 | dwo_tu = NULL; | |
7168 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7169 | struct signatured_type); | |
43988095 | 7170 | sig_type->signature = header.signature; |
9c541725 | 7171 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 7172 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
7173 | sig_type->per_cu.is_debug_types = 1; |
7174 | sig_type->per_cu.section = section; | |
9c541725 | 7175 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
7176 | sig_type->per_cu.length = length; |
7177 | } | |
7178 | ||
7179 | slot = htab_find_slot (types_htab, | |
7180 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
7181 | INSERT); | |
7182 | gdb_assert (slot != NULL); | |
7183 | if (*slot != NULL) | |
7184 | { | |
9c541725 | 7185 | sect_offset dup_sect_off; |
0349ea22 | 7186 | |
3019eac3 DE |
7187 | if (dwo_file) |
7188 | { | |
78d4d2c5 JK |
7189 | const struct dwo_unit *dup_tu |
7190 | = (const struct dwo_unit *) *slot; | |
7191 | ||
9c541725 | 7192 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
7193 | } |
7194 | else | |
7195 | { | |
78d4d2c5 JK |
7196 | const struct signatured_type *dup_tu |
7197 | = (const struct signatured_type *) *slot; | |
7198 | ||
9c541725 | 7199 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 7200 | } |
8b70b953 | 7201 | |
78d4d2c5 | 7202 | complaint (&symfile_complaints, |
9d8780f0 SM |
7203 | _("debug type entry at offset %s is duplicate to" |
7204 | " the entry at offset %s, signature %s"), | |
7205 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 7206 | hex_string (header.signature)); |
78d4d2c5 JK |
7207 | } |
7208 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 7209 | |
78d4d2c5 | 7210 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
7211 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
7212 | sect_offset_str (sect_off), | |
43988095 | 7213 | hex_string (header.signature)); |
3019eac3 | 7214 | |
78d4d2c5 JK |
7215 | info_ptr += length; |
7216 | } | |
7217 | } | |
3019eac3 | 7218 | |
78d4d2c5 JK |
7219 | /* Create the hash table of all entries in the .debug_types |
7220 | (or .debug_types.dwo) section(s). | |
7221 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
7222 | otherwise it is NULL. | |
b3c8eb43 | 7223 | |
78d4d2c5 | 7224 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 7225 | |
78d4d2c5 | 7226 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 7227 | |
78d4d2c5 | 7228 | static void |
ed2dc618 SM |
7229 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7230 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
7231 | VEC (dwarf2_section_info_def) *types, |
7232 | htab_t &types_htab) | |
7233 | { | |
7234 | int ix; | |
7235 | struct dwarf2_section_info *section; | |
7236 | ||
7237 | if (VEC_empty (dwarf2_section_info_def, types)) | |
7238 | return; | |
348e048f | 7239 | |
78d4d2c5 JK |
7240 | for (ix = 0; |
7241 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
7242 | ++ix) | |
ed2dc618 SM |
7243 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
7244 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
7245 | } |
7246 | ||
7247 | /* Create the hash table of all entries in the .debug_types section, | |
7248 | and initialize all_type_units. | |
7249 | The result is zero if there is an error (e.g. missing .debug_types section), | |
7250 | otherwise non-zero. */ | |
7251 | ||
7252 | static int | |
ed2dc618 | 7253 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 7254 | { |
78d4d2c5 | 7255 | htab_t types_htab = NULL; |
b4dd5633 | 7256 | struct signatured_type **iter; |
3019eac3 | 7257 | |
ed2dc618 SM |
7258 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
7259 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 7260 | rcuh_kind::COMPILE); |
ed2dc618 SM |
7261 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
7262 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
7263 | if (types_htab == NULL) |
7264 | { | |
7265 | dwarf2_per_objfile->signatured_types = NULL; | |
7266 | return 0; | |
7267 | } | |
7268 | ||
348e048f DE |
7269 | dwarf2_per_objfile->signatured_types = types_htab; |
7270 | ||
6aa5f3a6 DE |
7271 | dwarf2_per_objfile->n_type_units |
7272 | = dwarf2_per_objfile->n_allocated_type_units | |
7273 | = htab_elements (types_htab); | |
8d749320 SM |
7274 | dwarf2_per_objfile->all_type_units = |
7275 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
7276 | iter = &dwarf2_per_objfile->all_type_units[0]; |
7277 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
7278 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
7279 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 7280 | |
348e048f DE |
7281 | return 1; |
7282 | } | |
7283 | ||
6aa5f3a6 DE |
7284 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
7285 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
7286 | Otherwise we find one. */ | |
7287 | ||
7288 | static struct signatured_type * | |
ed2dc618 SM |
7289 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
7290 | void **slot) | |
6aa5f3a6 DE |
7291 | { |
7292 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7293 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
7294 | struct signatured_type *sig_type; | |
7295 | ||
7296 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
7297 | ++n_type_units; | |
7298 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
7299 | { | |
7300 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
7301 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
7302 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
7303 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
7304 | = XRESIZEVEC (struct signatured_type *, |
7305 | dwarf2_per_objfile->all_type_units, | |
7306 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
7307 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
7308 | } | |
7309 | dwarf2_per_objfile->n_type_units = n_type_units; | |
7310 | ||
7311 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7312 | struct signatured_type); | |
7313 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
7314 | sig_type->signature = sig; | |
7315 | sig_type->per_cu.is_debug_types = 1; | |
7316 | if (dwarf2_per_objfile->using_index) | |
7317 | { | |
7318 | sig_type->per_cu.v.quick = | |
7319 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7320 | struct dwarf2_per_cu_quick_data); | |
7321 | } | |
7322 | ||
7323 | if (slot == NULL) | |
7324 | { | |
7325 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7326 | sig_type, INSERT); | |
7327 | } | |
7328 | gdb_assert (*slot == NULL); | |
7329 | *slot = sig_type; | |
7330 | /* The rest of sig_type must be filled in by the caller. */ | |
7331 | return sig_type; | |
7332 | } | |
7333 | ||
a2ce51a0 DE |
7334 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
7335 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
7336 | ||
7337 | static void | |
ed2dc618 | 7338 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
7339 | struct signatured_type *sig_entry, |
7340 | struct dwo_unit *dwo_entry) | |
7341 | { | |
7ee85ab1 | 7342 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
7343 | gdb_assert (! sig_entry->per_cu.queued); |
7344 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
7345 | if (dwarf2_per_objfile->using_index) |
7346 | { | |
7347 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 7348 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
7349 | } |
7350 | else | |
7351 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 7352 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 7353 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 7354 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
7355 | gdb_assert (sig_entry->dwo_unit == NULL); |
7356 | ||
7357 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 7358 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
7359 | sig_entry->per_cu.length = dwo_entry->length; |
7360 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 7361 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
7362 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
7363 | sig_entry->dwo_unit = dwo_entry; | |
7364 | } | |
7365 | ||
7366 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
7367 | If we haven't read the TU yet, create the signatured_type data structure |
7368 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
7369 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
7370 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
7371 | containing that CU. Otherwise we could end up reading several other DWO | |
7372 | files (due to comdat folding) to process the transitive closure of all the | |
7373 | mentioned TUs, and that can be slow. The current DWO file will have every | |
7374 | type signature that it needs. | |
a2ce51a0 DE |
7375 | We only do this for .gdb_index because in the psymtab case we already have |
7376 | to read all the DWOs to build the type unit groups. */ | |
7377 | ||
7378 | static struct signatured_type * | |
7379 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7380 | { | |
518817b3 SM |
7381 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7382 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
7383 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7384 | struct dwo_file *dwo_file; | |
7385 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
7386 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7387 | void **slot; |
a2ce51a0 DE |
7388 | |
7389 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7390 | ||
6aa5f3a6 DE |
7391 | /* If TU skeletons have been removed then we may not have read in any |
7392 | TUs yet. */ | |
7393 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7394 | { | |
7395 | dwarf2_per_objfile->signatured_types | |
7396 | = allocate_signatured_type_table (objfile); | |
7397 | } | |
a2ce51a0 DE |
7398 | |
7399 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7400 | Use the global signatured_types array to do our own comdat-folding |
7401 | of types. If this is the first time we're reading this TU, and | |
7402 | the TU has an entry in .gdb_index, replace the recorded data from | |
7403 | .gdb_index with this TU. */ | |
a2ce51a0 | 7404 | |
a2ce51a0 | 7405 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7406 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7407 | &find_sig_entry, INSERT); | |
9a3c8263 | 7408 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7409 | |
7410 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7411 | read. Don't reassign the global entry to point to this DWO if that's |
7412 | the case. Also note that if the TU is already being read, it may not | |
7413 | have come from a DWO, the program may be a mix of Fission-compiled | |
7414 | code and non-Fission-compiled code. */ | |
7415 | ||
7416 | /* Have we already tried to read this TU? | |
7417 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7418 | needn't exist in the global table yet). */ | |
7419 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7420 | return sig_entry; |
7421 | ||
6aa5f3a6 DE |
7422 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7423 | dwo_unit of the TU itself. */ | |
7424 | dwo_file = cu->dwo_unit->dwo_file; | |
7425 | ||
a2ce51a0 DE |
7426 | /* Ok, this is the first time we're reading this TU. */ |
7427 | if (dwo_file->tus == NULL) | |
7428 | return NULL; | |
7429 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7430 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7431 | if (dwo_entry == NULL) |
7432 | return NULL; | |
7433 | ||
6aa5f3a6 DE |
7434 | /* If the global table doesn't have an entry for this TU, add one. */ |
7435 | if (sig_entry == NULL) | |
ed2dc618 | 7436 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7437 | |
ed2dc618 | 7438 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7439 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7440 | return sig_entry; |
7441 | } | |
7442 | ||
a2ce51a0 DE |
7443 | /* Subroutine of lookup_signatured_type. |
7444 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7445 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7446 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7447 | |
7448 | static struct signatured_type * | |
7449 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7450 | { | |
518817b3 SM |
7451 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7452 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7453 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7454 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7455 | struct dwo_unit *dwo_entry; |
7456 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7457 | void **slot; |
a2ce51a0 DE |
7458 | |
7459 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7460 | gdb_assert (dwp_file != NULL); | |
7461 | ||
6aa5f3a6 DE |
7462 | /* If TU skeletons have been removed then we may not have read in any |
7463 | TUs yet. */ | |
7464 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7465 | { |
6aa5f3a6 DE |
7466 | dwarf2_per_objfile->signatured_types |
7467 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7468 | } |
7469 | ||
6aa5f3a6 DE |
7470 | find_sig_entry.signature = sig; |
7471 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7472 | &find_sig_entry, INSERT); | |
9a3c8263 | 7473 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7474 | |
7475 | /* Have we already tried to read this TU? | |
7476 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7477 | needn't exist in the global table yet). */ | |
7478 | if (sig_entry != NULL) | |
7479 | return sig_entry; | |
7480 | ||
a2ce51a0 DE |
7481 | if (dwp_file->tus == NULL) |
7482 | return NULL; | |
ed2dc618 | 7483 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7484 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7485 | if (dwo_entry == NULL) |
7486 | return NULL; | |
7487 | ||
ed2dc618 SM |
7488 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7489 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7490 | |
a2ce51a0 DE |
7491 | return sig_entry; |
7492 | } | |
7493 | ||
380bca97 | 7494 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7495 | Returns NULL if signature SIG is not present in the table. |
7496 | It is up to the caller to complain about this. */ | |
348e048f DE |
7497 | |
7498 | static struct signatured_type * | |
a2ce51a0 | 7499 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7500 | { |
518817b3 SM |
7501 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7502 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7503 | |
a2ce51a0 DE |
7504 | if (cu->dwo_unit |
7505 | && dwarf2_per_objfile->using_index) | |
7506 | { | |
7507 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7508 | These cases require special processing. */ | |
ed2dc618 | 7509 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7510 | return lookup_dwo_signatured_type (cu, sig); |
7511 | else | |
7512 | return lookup_dwp_signatured_type (cu, sig); | |
7513 | } | |
7514 | else | |
7515 | { | |
7516 | struct signatured_type find_entry, *entry; | |
348e048f | 7517 | |
a2ce51a0 DE |
7518 | if (dwarf2_per_objfile->signatured_types == NULL) |
7519 | return NULL; | |
7520 | find_entry.signature = sig; | |
9a3c8263 SM |
7521 | entry = ((struct signatured_type *) |
7522 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7523 | return entry; |
7524 | } | |
348e048f | 7525 | } |
42e7ad6c DE |
7526 | \f |
7527 | /* Low level DIE reading support. */ | |
348e048f | 7528 | |
d85a05f0 DJ |
7529 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7530 | ||
7531 | static void | |
7532 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7533 | struct dwarf2_cu *cu, |
3019eac3 | 7534 | struct dwarf2_section_info *section, |
685af9cd TT |
7535 | struct dwo_file *dwo_file, |
7536 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7537 | { |
fceca515 | 7538 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7539 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7540 | reader->cu = cu; |
3019eac3 | 7541 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7542 | reader->die_section = section; |
7543 | reader->buffer = section->buffer; | |
f664829e | 7544 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7545 | reader->comp_dir = NULL; |
685af9cd | 7546 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7547 | } |
7548 | ||
b0c7bfa9 DE |
7549 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7550 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7551 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7552 | already. | |
7553 | ||
7554 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7555 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7556 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7557 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7558 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7559 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7560 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7561 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7562 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7563 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7564 | kept around for at least as long as *RESULT_READER. | |
7565 | ||
b0c7bfa9 DE |
7566 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7567 | ||
7568 | static int | |
7569 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7570 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7571 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7572 | const char *stub_comp_dir, |
b0c7bfa9 | 7573 | struct die_reader_specs *result_reader, |
d521ce57 | 7574 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7575 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7576 | int *result_has_children, |
7577 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7578 | { |
ed2dc618 | 7579 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7580 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7581 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7582 | bfd *abfd; |
d521ce57 | 7583 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7584 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7585 | int i,num_extra_attrs; | |
7586 | struct dwarf2_section_info *dwo_abbrev_section; | |
7587 | struct attribute *attr; | |
7588 | struct die_info *comp_unit_die; | |
7589 | ||
b0aeadb3 DE |
7590 | /* At most one of these may be provided. */ |
7591 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7592 | |
b0c7bfa9 DE |
7593 | /* These attributes aren't processed until later: |
7594 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7595 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7596 | referenced later. However, these attributes are found in the stub | |
7597 | which we won't have later. In order to not impose this complication | |
7598 | on the rest of the code, we read them here and copy them to the | |
7599 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7600 | |
7601 | stmt_list = NULL; | |
7602 | low_pc = NULL; | |
7603 | high_pc = NULL; | |
7604 | ranges = NULL; | |
7605 | comp_dir = NULL; | |
7606 | ||
7607 | if (stub_comp_unit_die != NULL) | |
7608 | { | |
7609 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7610 | DWO file. */ | |
7611 | if (! this_cu->is_debug_types) | |
7612 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7613 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7614 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7615 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7616 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7617 | ||
7618 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7619 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7620 | cu->addr_base = 0; | |
7621 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7622 | if (attr) | |
7623 | cu->addr_base = DW_UNSND (attr); | |
7624 | ||
7625 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7626 | We need the value before we can process DW_AT_ranges. */ | |
7627 | cu->ranges_base = 0; | |
7628 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7629 | if (attr) | |
7630 | cu->ranges_base = DW_UNSND (attr); | |
7631 | } | |
a2ce51a0 DE |
7632 | else if (stub_comp_dir != NULL) |
7633 | { | |
7634 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7635 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7636 | comp_dir->name = DW_AT_comp_dir; |
7637 | comp_dir->form = DW_FORM_string; | |
7638 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7639 | DW_STRING (comp_dir) = stub_comp_dir; | |
7640 | } | |
b0c7bfa9 DE |
7641 | |
7642 | /* Set up for reading the DWO CU/TU. */ | |
7643 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7644 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7645 | dwarf2_read_section (objfile, section); |
a32a8923 | 7646 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7647 | begin_info_ptr = info_ptr = (section->buffer |
7648 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7649 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7650 | |
7651 | if (this_cu->is_debug_types) | |
7652 | { | |
b0c7bfa9 DE |
7653 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7654 | ||
ed2dc618 SM |
7655 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7656 | &cu->header, section, | |
b0c7bfa9 | 7657 | dwo_abbrev_section, |
43988095 | 7658 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7659 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7660 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7661 | { |
7662 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7663 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7664 | hex_string (sig_type->signature), |
43988095 | 7665 | hex_string (cu->header.signature), |
9d8780f0 | 7666 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7667 | bfd_get_filename (abfd)); |
7668 | } | |
9c541725 | 7669 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7670 | /* For DWOs coming from DWP files, we don't know the CU length |
7671 | nor the type's offset in the TU until now. */ | |
7672 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7673 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7674 | |
7675 | /* Establish the type offset that can be used to lookup the type. | |
7676 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7677 | sig_type->type_offset_in_section |
7678 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7679 | } |
7680 | else | |
7681 | { | |
ed2dc618 SM |
7682 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7683 | &cu->header, section, | |
b0c7bfa9 | 7684 | dwo_abbrev_section, |
43988095 | 7685 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7686 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7687 | /* For DWOs coming from DWP files, we don't know the CU length |
7688 | until now. */ | |
7689 | dwo_unit->length = get_cu_length (&cu->header); | |
7690 | } | |
7691 | ||
685af9cd TT |
7692 | *result_dwo_abbrev_table |
7693 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7694 | cu->header.abbrev_sect_off); | |
7695 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7696 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7697 | |
7698 | /* Read in the die, but leave space to copy over the attributes | |
7699 | from the stub. This has the benefit of simplifying the rest of | |
7700 | the code - all the work to maintain the illusion of a single | |
7701 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7702 | num_extra_attrs = ((stmt_list != NULL) | |
7703 | + (low_pc != NULL) | |
7704 | + (high_pc != NULL) | |
7705 | + (ranges != NULL) | |
7706 | + (comp_dir != NULL)); | |
7707 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7708 | result_has_children, num_extra_attrs); | |
7709 | ||
7710 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7711 | comp_unit_die = *result_comp_unit_die; | |
7712 | i = comp_unit_die->num_attrs; | |
7713 | if (stmt_list != NULL) | |
7714 | comp_unit_die->attrs[i++] = *stmt_list; | |
7715 | if (low_pc != NULL) | |
7716 | comp_unit_die->attrs[i++] = *low_pc; | |
7717 | if (high_pc != NULL) | |
7718 | comp_unit_die->attrs[i++] = *high_pc; | |
7719 | if (ranges != NULL) | |
7720 | comp_unit_die->attrs[i++] = *ranges; | |
7721 | if (comp_dir != NULL) | |
7722 | comp_unit_die->attrs[i++] = *comp_dir; | |
7723 | comp_unit_die->num_attrs += num_extra_attrs; | |
7724 | ||
b4f54984 | 7725 | if (dwarf_die_debug) |
bf6af496 DE |
7726 | { |
7727 | fprintf_unfiltered (gdb_stdlog, | |
7728 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7729 | get_section_name (section), |
bf6af496 DE |
7730 | (unsigned) (begin_info_ptr - section->buffer), |
7731 | bfd_get_filename (abfd)); | |
b4f54984 | 7732 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7733 | } |
7734 | ||
a2ce51a0 DE |
7735 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7736 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7737 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7738 | to get it via circuitous means. Blech. */ | |
7739 | if (comp_dir != NULL) | |
7740 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7741 | ||
b0c7bfa9 DE |
7742 | /* Skip dummy compilation units. */ |
7743 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7744 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7745 | return 0; | |
7746 | ||
7747 | *result_info_ptr = info_ptr; | |
7748 | return 1; | |
7749 | } | |
7750 | ||
7751 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7752 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7753 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7754 | |
7755 | static struct dwo_unit * | |
7756 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7757 | struct die_info *comp_unit_die) | |
7758 | { | |
7759 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7760 | ULONGEST signature; |
7761 | struct dwo_unit *dwo_unit; | |
7762 | const char *comp_dir, *dwo_name; | |
7763 | ||
a2ce51a0 DE |
7764 | gdb_assert (cu != NULL); |
7765 | ||
b0c7bfa9 | 7766 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7767 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7768 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7769 | |
7770 | if (this_cu->is_debug_types) | |
7771 | { | |
7772 | struct signatured_type *sig_type; | |
7773 | ||
7774 | /* Since this_cu is the first member of struct signatured_type, | |
7775 | we can go from a pointer to one to a pointer to the other. */ | |
7776 | sig_type = (struct signatured_type *) this_cu; | |
7777 | signature = sig_type->signature; | |
7778 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7779 | } | |
7780 | else | |
7781 | { | |
7782 | struct attribute *attr; | |
7783 | ||
7784 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7785 | if (! attr) | |
7786 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7787 | " [in module %s]"), | |
e3b94546 | 7788 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7789 | signature = DW_UNSND (attr); |
7790 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7791 | signature); | |
7792 | } | |
7793 | ||
b0c7bfa9 DE |
7794 | return dwo_unit; |
7795 | } | |
7796 | ||
a2ce51a0 | 7797 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7798 | See it for a description of the parameters. |
fcd3b13d | 7799 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7800 | |
7801 | static void | |
6aa5f3a6 DE |
7802 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7803 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7804 | die_reader_func_ftype *die_reader_func, |
7805 | void *data) | |
7806 | { | |
fcd3b13d | 7807 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7808 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7809 | struct die_reader_specs reader; |
7810 | const gdb_byte *info_ptr; | |
7811 | struct die_info *comp_unit_die; | |
7812 | int has_children; | |
ed2dc618 | 7813 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7814 | |
7815 | /* Verify we can do the following downcast, and that we have the | |
7816 | data we need. */ | |
7817 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7818 | sig_type = (struct signatured_type *) this_cu; | |
7819 | gdb_assert (sig_type->dwo_unit != NULL); | |
7820 | ||
6aa5f3a6 DE |
7821 | if (use_existing_cu && this_cu->cu != NULL) |
7822 | { | |
7823 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7824 | /* There's no need to do the rereading_dwo_cu handling that |
7825 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7826 | } | |
7827 | else | |
7828 | { | |
7829 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7830 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7831 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7832 | } |
7833 | ||
7834 | /* A future optimization, if needed, would be to use an existing | |
7835 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7836 | could share abbrev tables. */ | |
a2ce51a0 | 7837 | |
685af9cd TT |
7838 | /* The abbreviation table used by READER, this must live at least as long as |
7839 | READER. */ | |
7840 | abbrev_table_up dwo_abbrev_table; | |
7841 | ||
a2ce51a0 | 7842 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7843 | NULL /* stub_comp_unit_die */, |
7844 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7845 | &reader, &info_ptr, | |
685af9cd TT |
7846 | &comp_unit_die, &has_children, |
7847 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7848 | { |
7849 | /* Dummy die. */ | |
a2ce51a0 DE |
7850 | return; |
7851 | } | |
7852 | ||
7853 | /* All the "real" work is done here. */ | |
7854 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7855 | ||
6aa5f3a6 | 7856 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7857 | but the alternative is making the latter more complex. |
7858 | This function is only for the special case of using DWO files directly: | |
7859 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7860 | if (new_cu != NULL && keep) |
a2ce51a0 | 7861 | { |
fcd3b13d SM |
7862 | /* Link this CU into read_in_chain. */ |
7863 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7864 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7865 | /* The chain owns it now. */ | |
7866 | new_cu.release (); | |
a2ce51a0 | 7867 | } |
a2ce51a0 DE |
7868 | } |
7869 | ||
fd820528 | 7870 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7871 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7872 | |
f4dc4d17 DE |
7873 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7874 | Otherwise the table specified in the comp unit header is read in and used. | |
7875 | This is an optimization for when we already have the abbrev table. | |
7876 | ||
dee91e82 DE |
7877 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7878 | Otherwise, a new CU is allocated with xmalloc. | |
7879 | ||
7880 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7881 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7882 | ||
7883 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7884 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7885 | |
70221824 | 7886 | static void |
fd820528 | 7887 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7888 | struct abbrev_table *abbrev_table, |
fd820528 DE |
7889 | int use_existing_cu, int keep, |
7890 | die_reader_func_ftype *die_reader_func, | |
7891 | void *data) | |
c906108c | 7892 | { |
ed2dc618 | 7893 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7894 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7895 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7896 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7897 | struct dwarf2_cu *cu; |
d521ce57 | 7898 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7899 | struct die_reader_specs reader; |
d85a05f0 | 7900 | struct die_info *comp_unit_die; |
dee91e82 | 7901 | int has_children; |
d85a05f0 | 7902 | struct attribute *attr; |
dee91e82 | 7903 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7904 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7905 | /* Non-zero if CU currently points to a DWO file and we need to |
7906 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7907 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7908 | int rereading_dwo_cu = 0; |
c906108c | 7909 | |
b4f54984 | 7910 | if (dwarf_die_debug) |
9d8780f0 | 7911 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7912 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7913 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7914 | |
dee91e82 DE |
7915 | if (use_existing_cu) |
7916 | gdb_assert (keep); | |
23745b47 | 7917 | |
a2ce51a0 DE |
7918 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7919 | file (instead of going through the stub), short-circuit all of this. */ | |
7920 | if (this_cu->reading_dwo_directly) | |
7921 | { | |
7922 | /* Narrow down the scope of possibilities to have to understand. */ | |
7923 | gdb_assert (this_cu->is_debug_types); | |
7924 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7925 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7926 | die_reader_func, data); | |
a2ce51a0 DE |
7927 | return; |
7928 | } | |
7929 | ||
dee91e82 DE |
7930 | /* This is cheap if the section is already read in. */ |
7931 | dwarf2_read_section (objfile, section); | |
7932 | ||
9c541725 | 7933 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7934 | |
7935 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7936 | |
fcd3b13d | 7937 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7938 | if (use_existing_cu && this_cu->cu != NULL) |
7939 | { | |
7940 | cu = this_cu->cu; | |
42e7ad6c DE |
7941 | /* If this CU is from a DWO file we need to start over, we need to |
7942 | refetch the attributes from the skeleton CU. | |
7943 | This could be optimized by retrieving those attributes from when we | |
7944 | were here the first time: the previous comp_unit_die was stored in | |
7945 | comp_unit_obstack. But there's no data yet that we need this | |
7946 | optimization. */ | |
7947 | if (cu->dwo_unit != NULL) | |
7948 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7949 | } |
7950 | else | |
7951 | { | |
7952 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7953 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7954 | new_cu.reset (new dwarf2_cu (this_cu)); |
7955 | cu = new_cu.get (); | |
42e7ad6c | 7956 | } |
dee91e82 | 7957 | |
b0c7bfa9 | 7958 | /* Get the header. */ |
9c541725 | 7959 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7960 | { |
7961 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7962 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7963 | } |
7964 | else | |
7965 | { | |
3019eac3 | 7966 | if (this_cu->is_debug_types) |
dee91e82 | 7967 | { |
ed2dc618 SM |
7968 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7969 | &cu->header, section, | |
4bdcc0c1 | 7970 | abbrev_section, info_ptr, |
43988095 | 7971 | rcuh_kind::TYPE); |
dee91e82 | 7972 | |
42e7ad6c DE |
7973 | /* Since per_cu is the first member of struct signatured_type, |
7974 | we can go from a pointer to one to a pointer to the other. */ | |
7975 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7976 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7977 | gdb_assert (sig_type->type_offset_in_tu |
7978 | == cu->header.type_cu_offset_in_tu); | |
7979 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7980 | |
42e7ad6c DE |
7981 | /* LENGTH has not been set yet for type units if we're |
7982 | using .gdb_index. */ | |
1ce1cefd | 7983 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7984 | |
7985 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7986 | sig_type->type_offset_in_section = |
7987 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7988 | |
7989 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7990 | } |
7991 | else | |
7992 | { | |
ed2dc618 SM |
7993 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7994 | &cu->header, section, | |
4bdcc0c1 | 7995 | abbrev_section, |
43988095 JK |
7996 | info_ptr, |
7997 | rcuh_kind::COMPILE); | |
dee91e82 | 7998 | |
9c541725 | 7999 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 8000 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 8001 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
8002 | } |
8003 | } | |
10b3939b | 8004 | |
6caca83c | 8005 | /* Skip dummy compilation units. */ |
dee91e82 | 8006 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 8007 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 8008 | return; |
6caca83c | 8009 | |
433df2d4 DE |
8010 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
8011 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
8012 | done (own the table through ABBREV_TABLE_HOLDER). */ |
8013 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 8014 | if (abbrev_table != NULL) |
685af9cd TT |
8015 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
8016 | else | |
f4dc4d17 | 8017 | { |
685af9cd TT |
8018 | abbrev_table_holder |
8019 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
8020 | cu->header.abbrev_sect_off); | |
8021 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 8022 | } |
af703f96 | 8023 | |
dee91e82 | 8024 | /* Read the top level CU/TU die. */ |
685af9cd | 8025 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 8026 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 8027 | |
b0c7bfa9 | 8028 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
8029 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
8030 | table from the DWO file and pass the ownership over to us. It will be | |
8031 | referenced from READER, so we must make sure to free it after we're done | |
8032 | with READER. | |
8033 | ||
b0c7bfa9 DE |
8034 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
8035 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 8036 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 8037 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
8038 | if (attr) |
8039 | { | |
3019eac3 | 8040 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 8041 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
8042 | |
8043 | if (has_children) | |
6a506a2d DE |
8044 | { |
8045 | complaint (&symfile_complaints, | |
8046 | _("compilation unit with DW_AT_GNU_dwo_name" | |
9d8780f0 SM |
8047 | " has children (offset %s) [in module %s]"), |
8048 | sect_offset_str (this_cu->sect_off), | |
8049 | bfd_get_filename (abfd)); | |
6a506a2d | 8050 | } |
b0c7bfa9 | 8051 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 8052 | if (dwo_unit != NULL) |
3019eac3 | 8053 | { |
6a506a2d | 8054 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 8055 | comp_unit_die, NULL, |
6a506a2d | 8056 | &reader, &info_ptr, |
685af9cd TT |
8057 | &dwo_comp_unit_die, &has_children, |
8058 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
8059 | { |
8060 | /* Dummy die. */ | |
6a506a2d DE |
8061 | return; |
8062 | } | |
8063 | comp_unit_die = dwo_comp_unit_die; | |
8064 | } | |
8065 | else | |
8066 | { | |
8067 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
8068 | the stub. A complaint has already been logged. There's | |
8069 | not much more we can do except pass on the stub DIE to | |
8070 | die_reader_func. We don't want to throw an error on bad | |
8071 | debug info. */ | |
3019eac3 DE |
8072 | } |
8073 | } | |
8074 | ||
b0c7bfa9 | 8075 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
8076 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
8077 | ||
b0c7bfa9 | 8078 | /* Done, clean up. */ |
fcd3b13d | 8079 | if (new_cu != NULL && keep) |
348e048f | 8080 | { |
fcd3b13d SM |
8081 | /* Link this CU into read_in_chain. */ |
8082 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
8083 | dwarf2_per_objfile->read_in_chain = this_cu; | |
8084 | /* The chain owns it now. */ | |
8085 | new_cu.release (); | |
348e048f | 8086 | } |
dee91e82 DE |
8087 | } |
8088 | ||
33e80786 DE |
8089 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
8090 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
8091 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
8092 | |
8093 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 8094 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
8095 | |
8096 | We fill in THIS_CU->length. | |
8097 | ||
8098 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
8099 | linker) then DIE_READER_FUNC will not get called. | |
8100 | ||
8101 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
8102 | This is done in order to not leave THIS_CU->cu in a state where we have |
8103 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
8104 | |
8105 | static void | |
8106 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 8107 | struct dwo_file *dwo_file, |
dee91e82 DE |
8108 | die_reader_func_ftype *die_reader_func, |
8109 | void *data) | |
8110 | { | |
ed2dc618 | 8111 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 8112 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 8113 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 8114 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 8115 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 8116 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 8117 | struct die_reader_specs reader; |
dee91e82 DE |
8118 | struct die_info *comp_unit_die; |
8119 | int has_children; | |
8120 | ||
b4f54984 | 8121 | if (dwarf_die_debug) |
9d8780f0 | 8122 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 8123 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 8124 | sect_offset_str (this_cu->sect_off)); |
09406207 | 8125 | |
dee91e82 DE |
8126 | gdb_assert (this_cu->cu == NULL); |
8127 | ||
33e80786 DE |
8128 | abbrev_section = (dwo_file != NULL |
8129 | ? &dwo_file->sections.abbrev | |
8130 | : get_abbrev_section_for_cu (this_cu)); | |
8131 | ||
dee91e82 DE |
8132 | /* This is cheap if the section is already read in. */ |
8133 | dwarf2_read_section (objfile, section); | |
8134 | ||
fcd3b13d | 8135 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 8136 | |
9c541725 | 8137 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
8138 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
8139 | &cu.header, section, | |
4bdcc0c1 | 8140 | abbrev_section, info_ptr, |
43988095 JK |
8141 | (this_cu->is_debug_types |
8142 | ? rcuh_kind::TYPE | |
8143 | : rcuh_kind::COMPILE)); | |
dee91e82 | 8144 | |
1ce1cefd | 8145 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
8146 | |
8147 | /* Skip dummy compilation units. */ | |
8148 | if (info_ptr >= begin_info_ptr + this_cu->length | |
8149 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 8150 | return; |
72bf9492 | 8151 | |
685af9cd TT |
8152 | abbrev_table_up abbrev_table |
8153 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
8154 | cu.header.abbrev_sect_off); | |
dee91e82 | 8155 | |
685af9cd | 8156 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
8157 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
8158 | ||
8159 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
8160 | } |
8161 | ||
3019eac3 DE |
8162 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
8163 | does not lookup the specified DWO file. | |
8164 | This cannot be used to read DWO files. | |
dee91e82 DE |
8165 | |
8166 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
8167 | This is done in order to not leave THIS_CU->cu in a state where we have |
8168 | to care whether it refers to the "main" CU or the DWO CU. | |
8169 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
8170 | |
8171 | static void | |
8172 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
8173 | die_reader_func_ftype *die_reader_func, | |
8174 | void *data) | |
8175 | { | |
33e80786 | 8176 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 8177 | } |
0018ea6f DE |
8178 | \f |
8179 | /* Type Unit Groups. | |
dee91e82 | 8180 | |
0018ea6f DE |
8181 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
8182 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
8183 | so that all types coming from the same compilation (.o file) are grouped | |
8184 | together. A future step could be to put the types in the same symtab as | |
8185 | the CU the types ultimately came from. */ | |
ff013f42 | 8186 | |
f4dc4d17 DE |
8187 | static hashval_t |
8188 | hash_type_unit_group (const void *item) | |
8189 | { | |
9a3c8263 SM |
8190 | const struct type_unit_group *tu_group |
8191 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 8192 | |
094b34ac | 8193 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 8194 | } |
348e048f DE |
8195 | |
8196 | static int | |
f4dc4d17 | 8197 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 8198 | { |
9a3c8263 SM |
8199 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
8200 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 8201 | |
094b34ac | 8202 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 8203 | } |
348e048f | 8204 | |
f4dc4d17 DE |
8205 | /* Allocate a hash table for type unit groups. */ |
8206 | ||
8207 | static htab_t | |
ed2dc618 | 8208 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
8209 | { |
8210 | return htab_create_alloc_ex (3, | |
8211 | hash_type_unit_group, | |
8212 | eq_type_unit_group, | |
8213 | NULL, | |
ed2dc618 | 8214 | &objfile->objfile_obstack, |
f4dc4d17 DE |
8215 | hashtab_obstack_allocate, |
8216 | dummy_obstack_deallocate); | |
8217 | } | |
dee91e82 | 8218 | |
f4dc4d17 DE |
8219 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
8220 | partial symtabs. We combine several TUs per psymtab to not let the size | |
8221 | of any one psymtab grow too big. */ | |
8222 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
8223 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 8224 | |
094b34ac | 8225 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
8226 | Create the type_unit_group object used to hold one or more TUs. */ |
8227 | ||
8228 | static struct type_unit_group * | |
094b34ac | 8229 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 8230 | { |
518817b3 SM |
8231 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8232 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 8233 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 8234 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 8235 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
8236 | |
8237 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8238 | struct type_unit_group); | |
094b34ac | 8239 | per_cu = &tu_group->per_cu; |
518817b3 | 8240 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 8241 | |
094b34ac DE |
8242 | if (dwarf2_per_objfile->using_index) |
8243 | { | |
8244 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8245 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
8246 | } |
8247 | else | |
8248 | { | |
9c541725 | 8249 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
8250 | struct partial_symtab *pst; |
8251 | char *name; | |
8252 | ||
8253 | /* Give the symtab a useful name for debug purposes. */ | |
8254 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
8255 | name = xstrprintf ("<type_units_%d>", | |
8256 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
8257 | else | |
8258 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
8259 | ||
8260 | pst = create_partial_symtab (per_cu, name); | |
8261 | pst->anonymous = 1; | |
f4dc4d17 | 8262 | |
094b34ac DE |
8263 | xfree (name); |
8264 | } | |
f4dc4d17 | 8265 | |
094b34ac | 8266 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8267 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
8268 | |
8269 | return tu_group; | |
8270 | } | |
8271 | ||
094b34ac DE |
8272 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
8273 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
8274 | |
8275 | static struct type_unit_group * | |
ff39bb5e | 8276 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 8277 | { |
518817b3 SM |
8278 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8279 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
8280 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
8281 | struct type_unit_group *tu_group; | |
8282 | void **slot; | |
8283 | unsigned int line_offset; | |
8284 | struct type_unit_group type_unit_group_for_lookup; | |
8285 | ||
8286 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
8287 | { | |
8288 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 8289 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
8290 | } |
8291 | ||
8292 | /* Do we need to create a new group, or can we use an existing one? */ | |
8293 | ||
8294 | if (stmt_list) | |
8295 | { | |
8296 | line_offset = DW_UNSND (stmt_list); | |
8297 | ++tu_stats->nr_symtab_sharers; | |
8298 | } | |
8299 | else | |
8300 | { | |
8301 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
8302 | We can do various things here like create one group per TU or | |
8303 | spread them over multiple groups to split up the expansion work. | |
8304 | To avoid worst case scenarios (too many groups or too large groups) | |
8305 | we, umm, group them in bunches. */ | |
8306 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
8307 | | (tu_stats->nr_stmt_less_type_units | |
8308 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
8309 | ++tu_stats->nr_stmt_less_type_units; | |
8310 | } | |
8311 | ||
094b34ac | 8312 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8313 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
8314 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
8315 | &type_unit_group_for_lookup, INSERT); | |
8316 | if (*slot != NULL) | |
8317 | { | |
9a3c8263 | 8318 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
8319 | gdb_assert (tu_group != NULL); |
8320 | } | |
8321 | else | |
8322 | { | |
9c541725 | 8323 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 8324 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
8325 | *slot = tu_group; |
8326 | ++tu_stats->nr_symtabs; | |
8327 | } | |
8328 | ||
8329 | return tu_group; | |
8330 | } | |
0018ea6f DE |
8331 | \f |
8332 | /* Partial symbol tables. */ | |
8333 | ||
8334 | /* Create a psymtab named NAME and assign it to PER_CU. | |
8335 | ||
8336 | The caller must fill in the following details: | |
8337 | dirname, textlow, texthigh. */ | |
8338 | ||
8339 | static struct partial_symtab * | |
8340 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
8341 | { | |
e3b94546 | 8342 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
8343 | struct partial_symtab *pst; |
8344 | ||
18a94d75 | 8345 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
8346 | objfile->global_psymbols, |
8347 | objfile->static_psymbols); | |
0018ea6f DE |
8348 | |
8349 | pst->psymtabs_addrmap_supported = 1; | |
8350 | ||
8351 | /* This is the glue that links PST into GDB's symbol API. */ | |
8352 | pst->read_symtab_private = per_cu; | |
8353 | pst->read_symtab = dwarf2_read_symtab; | |
8354 | per_cu->v.psymtab = pst; | |
8355 | ||
8356 | return pst; | |
8357 | } | |
8358 | ||
b93601f3 TT |
8359 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
8360 | type. */ | |
8361 | ||
8362 | struct process_psymtab_comp_unit_data | |
8363 | { | |
8364 | /* True if we are reading a DW_TAG_partial_unit. */ | |
8365 | ||
8366 | int want_partial_unit; | |
8367 | ||
8368 | /* The "pretend" language that is used if the CU doesn't declare a | |
8369 | language. */ | |
8370 | ||
8371 | enum language pretend_language; | |
8372 | }; | |
8373 | ||
0018ea6f DE |
8374 | /* die_reader_func for process_psymtab_comp_unit. */ |
8375 | ||
8376 | static void | |
8377 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8378 | const gdb_byte *info_ptr, |
0018ea6f DE |
8379 | struct die_info *comp_unit_die, |
8380 | int has_children, | |
8381 | void *data) | |
8382 | { | |
8383 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 8384 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 8385 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8386 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8387 | CORE_ADDR baseaddr; |
8388 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
8389 | struct partial_symtab *pst; | |
3a2b436a | 8390 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8391 | const char *filename; |
9a3c8263 SM |
8392 | struct process_psymtab_comp_unit_data *info |
8393 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 8394 | |
b93601f3 | 8395 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
8396 | return; |
8397 | ||
8398 | gdb_assert (! per_cu->is_debug_types); | |
8399 | ||
b93601f3 | 8400 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
8401 | |
8402 | cu->list_in_scope = &file_symbols; | |
8403 | ||
8404 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
8405 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8406 | if (filename == NULL) | |
0018ea6f | 8407 | filename = ""; |
0018ea6f DE |
8408 | |
8409 | pst = create_partial_symtab (per_cu, filename); | |
8410 | ||
8411 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8412 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
8413 | |
8414 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8415 | ||
8416 | dwarf2_find_base_address (comp_unit_die, cu); | |
8417 | ||
8418 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8419 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8420 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8421 | &best_highpc, cu, pst); | |
8422 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
8423 | /* Store the contiguous range if it is not empty; it can be empty for |
8424 | CUs with no code. */ | |
8425 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
8426 | gdbarch_adjust_dwarf2_addr (gdbarch, |
8427 | best_lowpc + baseaddr), | |
8428 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
8429 | best_highpc + baseaddr) - 1, | |
8430 | pst); | |
0018ea6f DE |
8431 | |
8432 | /* Check if comp unit has_children. | |
8433 | If so, read the rest of the partial symbols from this comp unit. | |
8434 | If not, there's no more debug_info for this comp unit. */ | |
8435 | if (has_children) | |
8436 | { | |
8437 | struct partial_die_info *first_die; | |
8438 | CORE_ADDR lowpc, highpc; | |
8439 | ||
8440 | lowpc = ((CORE_ADDR) -1); | |
8441 | highpc = ((CORE_ADDR) 0); | |
8442 | ||
8443 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8444 | ||
8445 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8446 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8447 | |
8448 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8449 | complaints from `maint check'. */ | |
8450 | if (lowpc == ((CORE_ADDR) -1)) | |
8451 | lowpc = highpc; | |
8452 | ||
8453 | /* If the compilation unit didn't have an explicit address range, | |
8454 | then use the information extracted from its child dies. */ | |
e385593e | 8455 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8456 | { |
8457 | best_lowpc = lowpc; | |
8458 | best_highpc = highpc; | |
8459 | } | |
8460 | } | |
3e29f34a MR |
8461 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
8462 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 8463 | |
8763cede | 8464 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8465 | |
8466 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8467 | { | |
8468 | int i; | |
8469 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8470 | struct dwarf2_per_cu_data *iter; | |
8471 | ||
8472 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8473 | post-pass. */ | |
8474 | pst->number_of_dependencies = len; | |
8d749320 SM |
8475 | pst->dependencies = |
8476 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8477 | for (i = 0; |
8478 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8479 | i, iter); | |
8480 | ++i) | |
8481 | pst->dependencies[i] = iter->v.psymtab; | |
8482 | ||
8483 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8484 | } | |
8485 | ||
8486 | /* Get the list of files included in the current compilation unit, | |
8487 | and build a psymtab for each of them. */ | |
8488 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8489 | ||
b4f54984 | 8490 | if (dwarf_read_debug) |
0018ea6f DE |
8491 | { |
8492 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8493 | ||
8494 | fprintf_unfiltered (gdb_stdlog, | |
9d8780f0 | 8495 | "Psymtab for %s unit @%s: %s - %s" |
0018ea6f DE |
8496 | ", %d global, %d static syms\n", |
8497 | per_cu->is_debug_types ? "type" : "comp", | |
9d8780f0 | 8498 | sect_offset_str (per_cu->sect_off), |
0018ea6f DE |
8499 | paddress (gdbarch, pst->textlow), |
8500 | paddress (gdbarch, pst->texthigh), | |
8501 | pst->n_global_syms, pst->n_static_syms); | |
8502 | } | |
8503 | } | |
8504 | ||
8505 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8506 | Process compilation unit THIS_CU for a psymtab. */ | |
8507 | ||
8508 | static void | |
8509 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8510 | int want_partial_unit, |
8511 | enum language pretend_language) | |
0018ea6f DE |
8512 | { |
8513 | /* If this compilation unit was already read in, free the | |
8514 | cached copy in order to read it in again. This is | |
8515 | necessary because we skipped some symbols when we first | |
8516 | read in the compilation unit (see load_partial_dies). | |
8517 | This problem could be avoided, but the benefit is unclear. */ | |
8518 | if (this_cu->cu != NULL) | |
8519 | free_one_cached_comp_unit (this_cu); | |
8520 | ||
f1902523 JK |
8521 | if (this_cu->is_debug_types) |
8522 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, build_type_psymtabs_reader, | |
8523 | NULL); | |
8524 | else | |
8525 | { | |
8526 | process_psymtab_comp_unit_data info; | |
8527 | info.want_partial_unit = want_partial_unit; | |
8528 | info.pretend_language = pretend_language; | |
8529 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
8530 | process_psymtab_comp_unit_reader, &info); | |
8531 | } | |
0018ea6f DE |
8532 | |
8533 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8534 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8535 | } |
f4dc4d17 DE |
8536 | |
8537 | /* Reader function for build_type_psymtabs. */ | |
8538 | ||
8539 | static void | |
8540 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8541 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8542 | struct die_info *type_unit_die, |
8543 | int has_children, | |
8544 | void *data) | |
8545 | { | |
ed2dc618 | 8546 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8547 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8548 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8549 | struct dwarf2_cu *cu = reader->cu; | |
8550 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8551 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8552 | struct type_unit_group *tu_group; |
8553 | struct attribute *attr; | |
8554 | struct partial_die_info *first_die; | |
8555 | CORE_ADDR lowpc, highpc; | |
8556 | struct partial_symtab *pst; | |
8557 | ||
8558 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8559 | gdb_assert (per_cu->is_debug_types); |
8560 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8561 | |
8562 | if (! has_children) | |
8563 | return; | |
8564 | ||
8565 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8566 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8567 | |
0186c6a7 | 8568 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8569 | |
8570 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
8571 | cu->list_in_scope = &file_symbols; | |
8572 | pst = create_partial_symtab (per_cu, ""); | |
8573 | pst->anonymous = 1; | |
8574 | ||
8575 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8576 | ||
8577 | lowpc = (CORE_ADDR) -1; | |
8578 | highpc = (CORE_ADDR) 0; | |
8579 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8580 | ||
8763cede | 8581 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8582 | } |
8583 | ||
73051182 DE |
8584 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8585 | ||
8586 | struct tu_abbrev_offset | |
8587 | { | |
8588 | struct signatured_type *sig_type; | |
8589 | sect_offset abbrev_offset; | |
8590 | }; | |
8591 | ||
484cf504 | 8592 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8593 | |
484cf504 TT |
8594 | static bool |
8595 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8596 | const struct tu_abbrev_offset &b) | |
73051182 | 8597 | { |
484cf504 | 8598 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8599 | } |
8600 | ||
8601 | /* Efficiently read all the type units. | |
8602 | This does the bulk of the work for build_type_psymtabs. | |
8603 | ||
8604 | The efficiency is because we sort TUs by the abbrev table they use and | |
8605 | only read each abbrev table once. In one program there are 200K TUs | |
8606 | sharing 8K abbrev tables. | |
8607 | ||
8608 | The main purpose of this function is to support building the | |
8609 | dwarf2_per_objfile->type_unit_groups table. | |
8610 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8611 | can collapse the search space by grouping them by stmt_list. | |
8612 | The savings can be significant, in the same program from above the 200K TUs | |
8613 | share 8K stmt_list tables. | |
8614 | ||
8615 | FUNC is expected to call get_type_unit_group, which will create the | |
8616 | struct type_unit_group if necessary and add it to | |
8617 | dwarf2_per_objfile->type_unit_groups. */ | |
8618 | ||
8619 | static void | |
ed2dc618 | 8620 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8621 | { |
73051182 | 8622 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8623 | abbrev_table_up abbrev_table; |
73051182 | 8624 | sect_offset abbrev_offset; |
73051182 DE |
8625 | int i; |
8626 | ||
8627 | /* It's up to the caller to not call us multiple times. */ | |
8628 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8629 | ||
8630 | if (dwarf2_per_objfile->n_type_units == 0) | |
8631 | return; | |
8632 | ||
8633 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8634 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8635 | read each abbrev table in. | |
8636 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8637 | This is simpler and efficient enough for now. | |
8638 | ||
8639 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8640 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8641 | stmt_list value too so in practice this should work well. | |
8642 | ||
8643 | The basic algorithm here is: | |
8644 | ||
8645 | sort TUs by abbrev table | |
8646 | for each TU with same abbrev table: | |
8647 | read abbrev table if first user | |
8648 | read TU top level DIE | |
8649 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8650 | call FUNC */ | |
8651 | ||
b4f54984 | 8652 | if (dwarf_read_debug) |
73051182 DE |
8653 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8654 | ||
8655 | /* Sort in a separate table to maintain the order of all_type_units | |
8656 | for .gdb_index: TU indices directly index all_type_units. */ | |
484cf504 TT |
8657 | std::vector<struct tu_abbrev_offset> sorted_by_abbrev |
8658 | (dwarf2_per_objfile->n_type_units); | |
73051182 DE |
8659 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) |
8660 | { | |
8661 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
8662 | ||
8663 | sorted_by_abbrev[i].sig_type = sig_type; | |
8664 | sorted_by_abbrev[i].abbrev_offset = | |
ed2dc618 SM |
8665 | read_abbrev_offset (dwarf2_per_objfile, |
8666 | sig_type->per_cu.section, | |
9c541725 | 8667 | sig_type->per_cu.sect_off); |
73051182 | 8668 | } |
484cf504 TT |
8669 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8670 | sort_tu_by_abbrev_offset); | |
73051182 | 8671 | |
9c541725 | 8672 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 DE |
8673 | |
8674 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
8675 | { | |
8676 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
8677 | ||
8678 | /* Switch to the next abbrev table if necessary. */ | |
8679 | if (abbrev_table == NULL | |
9c541725 | 8680 | || tu->abbrev_offset != abbrev_offset) |
73051182 | 8681 | { |
73051182 DE |
8682 | abbrev_offset = tu->abbrev_offset; |
8683 | abbrev_table = | |
ed2dc618 SM |
8684 | abbrev_table_read_table (dwarf2_per_objfile, |
8685 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8686 | abbrev_offset); |
8687 | ++tu_stats->nr_uniq_abbrev_tables; | |
8688 | } | |
8689 | ||
685af9cd TT |
8690 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table.get (), |
8691 | 0, 0, build_type_psymtabs_reader, NULL); | |
73051182 | 8692 | } |
6aa5f3a6 | 8693 | } |
73051182 | 8694 | |
6aa5f3a6 DE |
8695 | /* Print collected type unit statistics. */ |
8696 | ||
8697 | static void | |
ed2dc618 | 8698 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8699 | { |
8700 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8701 | ||
8702 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
8703 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
8704 | dwarf2_per_objfile->n_type_units); | |
8705 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
8706 | tu_stats->nr_uniq_abbrev_tables); | |
8707 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8708 | tu_stats->nr_symtabs); | |
8709 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8710 | tu_stats->nr_symtab_sharers); | |
8711 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8712 | tu_stats->nr_stmt_less_type_units); | |
8713 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8714 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8715 | } |
8716 | ||
f4dc4d17 DE |
8717 | /* Traversal function for build_type_psymtabs. */ |
8718 | ||
8719 | static int | |
8720 | build_type_psymtab_dependencies (void **slot, void *info) | |
8721 | { | |
ed2dc618 SM |
8722 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8723 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8724 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8725 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8726 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8727 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8728 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8729 | struct signatured_type *iter; | |
f4dc4d17 DE |
8730 | int i; |
8731 | ||
8732 | gdb_assert (len > 0); | |
0186c6a7 | 8733 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8734 | |
8735 | pst->number_of_dependencies = len; | |
8d749320 SM |
8736 | pst->dependencies = |
8737 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8738 | for (i = 0; |
0186c6a7 | 8739 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8740 | ++i) |
8741 | { | |
0186c6a7 DE |
8742 | gdb_assert (iter->per_cu.is_debug_types); |
8743 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8744 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8745 | } |
8746 | ||
0186c6a7 | 8747 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8748 | |
8749 | return 1; | |
8750 | } | |
8751 | ||
8752 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8753 | Build partial symbol tables for the .debug_types comp-units. */ | |
8754 | ||
8755 | static void | |
ed2dc618 | 8756 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8757 | { |
ed2dc618 | 8758 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8759 | return; |
8760 | ||
ed2dc618 | 8761 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8762 | } |
f4dc4d17 | 8763 | |
6aa5f3a6 DE |
8764 | /* Traversal function for process_skeletonless_type_unit. |
8765 | Read a TU in a DWO file and build partial symbols for it. */ | |
8766 | ||
8767 | static int | |
8768 | process_skeletonless_type_unit (void **slot, void *info) | |
8769 | { | |
8770 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8771 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8772 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8773 | struct signatured_type find_entry, *entry; |
8774 | ||
8775 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8776 | ||
8777 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8778 | { | |
8779 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8780 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8781 | } |
8782 | ||
8783 | find_entry.signature = dwo_unit->signature; | |
8784 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8785 | INSERT); | |
8786 | /* If we've already seen this type there's nothing to do. What's happening | |
8787 | is we're doing our own version of comdat-folding here. */ | |
8788 | if (*slot != NULL) | |
8789 | return 1; | |
8790 | ||
8791 | /* This does the job that create_all_type_units would have done for | |
8792 | this TU. */ | |
ed2dc618 SM |
8793 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8794 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8795 | *slot = entry; |
8796 | ||
8797 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
8798 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
8799 | build_type_psymtabs_reader, NULL); | |
8800 | ||
8801 | return 1; | |
8802 | } | |
8803 | ||
8804 | /* Traversal function for process_skeletonless_type_units. */ | |
8805 | ||
8806 | static int | |
8807 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8808 | { | |
8809 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8810 | ||
8811 | if (dwo_file->tus != NULL) | |
8812 | { | |
8813 | htab_traverse_noresize (dwo_file->tus, | |
8814 | process_skeletonless_type_unit, info); | |
8815 | } | |
8816 | ||
8817 | return 1; | |
8818 | } | |
8819 | ||
8820 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8821 | This is needed in case a TU was emitted without its skeleton. | |
8822 | Note: This can't be done until we know what all the DWO files are. */ | |
8823 | ||
8824 | static void | |
ed2dc618 | 8825 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8826 | { |
8827 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8828 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8829 | && dwarf2_per_objfile->dwo_files != NULL) |
8830 | { | |
8831 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8832 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8833 | dwarf2_per_objfile); |
6aa5f3a6 | 8834 | } |
348e048f DE |
8835 | } |
8836 | ||
ed2dc618 | 8837 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8838 | |
8839 | static void | |
ed2dc618 | 8840 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
8841 | { |
8842 | int i; | |
8843 | ||
8844 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
8845 | { | |
ed2dc618 | 8846 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
95554aad TT |
8847 | struct partial_symtab *pst = per_cu->v.psymtab; |
8848 | int j; | |
8849 | ||
36586728 TT |
8850 | if (pst == NULL) |
8851 | continue; | |
8852 | ||
95554aad TT |
8853 | for (j = 0; j < pst->number_of_dependencies; ++j) |
8854 | { | |
8855 | /* Set the 'user' field only if it is not already set. */ | |
8856 | if (pst->dependencies[j]->user == NULL) | |
8857 | pst->dependencies[j]->user = pst; | |
8858 | } | |
8859 | } | |
8860 | } | |
8861 | ||
93311388 DE |
8862 | /* Build the partial symbol table by doing a quick pass through the |
8863 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8864 | |
93311388 | 8865 | static void |
ed2dc618 | 8866 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8867 | { |
791afaa2 | 8868 | struct cleanup *back_to; |
21b2bd31 | 8869 | int i; |
ed2dc618 | 8870 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8871 | |
b4f54984 | 8872 | if (dwarf_read_debug) |
45cfd468 DE |
8873 | { |
8874 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8875 | objfile_name (objfile)); |
45cfd468 DE |
8876 | } |
8877 | ||
98bfdba5 PA |
8878 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8879 | ||
be391dca | 8880 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8881 | |
93311388 DE |
8882 | /* Any cached compilation units will be linked by the per-objfile |
8883 | read_in_chain. Make sure to free them when we're done. */ | |
ed2dc618 | 8884 | back_to = make_cleanup (free_cached_comp_units, dwarf2_per_objfile); |
72bf9492 | 8885 | |
ed2dc618 | 8886 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8887 | |
ed2dc618 | 8888 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8889 | |
60606b2c TT |
8890 | /* Create a temporary address map on a temporary obstack. We later |
8891 | copy this to the final obstack. */ | |
8268c778 | 8892 | auto_obstack temp_obstack; |
791afaa2 TT |
8893 | |
8894 | scoped_restore save_psymtabs_addrmap | |
8895 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8896 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8897 | |
21b2bd31 | 8898 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 8899 | { |
ed2dc618 | 8900 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
aaa75496 | 8901 | |
b93601f3 | 8902 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 8903 | } |
ff013f42 | 8904 | |
6aa5f3a6 | 8905 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8906 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8907 | |
8908 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8909 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8910 | { | |
8911 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8912 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8913 | } |
8914 | ||
b4f54984 | 8915 | if (dwarf_read_debug) |
ed2dc618 | 8916 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8917 | |
ed2dc618 | 8918 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8919 | |
ff013f42 JK |
8920 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8921 | &objfile->objfile_obstack); | |
791afaa2 TT |
8922 | /* At this point we want to keep the address map. */ |
8923 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8924 | |
ae038cb0 | 8925 | do_cleanups (back_to); |
45cfd468 | 8926 | |
b4f54984 | 8927 | if (dwarf_read_debug) |
45cfd468 | 8928 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8929 | objfile_name (objfile)); |
ae038cb0 DJ |
8930 | } |
8931 | ||
3019eac3 | 8932 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8933 | |
8934 | static void | |
dee91e82 | 8935 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8936 | const gdb_byte *info_ptr, |
dee91e82 DE |
8937 | struct die_info *comp_unit_die, |
8938 | int has_children, | |
8939 | void *data) | |
ae038cb0 | 8940 | { |
dee91e82 | 8941 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8942 | |
95554aad | 8943 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8944 | |
ae038cb0 DJ |
8945 | /* Check if comp unit has_children. |
8946 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8947 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8948 | if (has_children) |
dee91e82 DE |
8949 | load_partial_dies (reader, info_ptr, 0); |
8950 | } | |
98bfdba5 | 8951 | |
dee91e82 DE |
8952 | /* Load the partial DIEs for a secondary CU into memory. |
8953 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8954 | |
dee91e82 DE |
8955 | static void |
8956 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8957 | { | |
f4dc4d17 DE |
8958 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
8959 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
8960 | } |
8961 | ||
ae038cb0 | 8962 | static void |
ed2dc618 | 8963 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8964 | struct dwarf2_section_info *section, |
f1902523 | 8965 | struct dwarf2_section_info *abbrev_section, |
36586728 TT |
8966 | unsigned int is_dwz, |
8967 | int *n_allocated, | |
8968 | int *n_comp_units, | |
8969 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 8970 | { |
d521ce57 | 8971 | const gdb_byte *info_ptr; |
ed2dc618 | 8972 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8973 | |
b4f54984 | 8974 | if (dwarf_read_debug) |
bf6af496 | 8975 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8976 | get_section_name (section), |
8977 | get_section_file_name (section)); | |
bf6af496 | 8978 | |
36586728 | 8979 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8980 | |
36586728 | 8981 | info_ptr = section->buffer; |
6e70227d | 8982 | |
36586728 | 8983 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8984 | { |
ae038cb0 | 8985 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8986 | |
9c541725 | 8987 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8988 | |
f1902523 | 8989 | comp_unit_head cu_header; |
ed2dc618 SM |
8990 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8991 | abbrev_section, info_ptr, | |
8992 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8993 | |
8994 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8995 | if (cu_header.unit_type != DW_UT_type) |
8996 | { | |
8997 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8998 | struct dwarf2_per_cu_data); | |
8999 | memset (this_cu, 0, sizeof (*this_cu)); | |
9000 | } | |
9001 | else | |
9002 | { | |
9003 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
9004 | struct signatured_type); | |
9005 | memset (sig_type, 0, sizeof (*sig_type)); | |
9006 | sig_type->signature = cu_header.signature; | |
9007 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
9008 | this_cu = &sig_type->per_cu; | |
9009 | } | |
9010 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 9011 | this_cu->sect_off = sect_off; |
f1902523 | 9012 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 9013 | this_cu->is_dwz = is_dwz; |
e3b94546 | 9014 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 9015 | this_cu->section = section; |
ae038cb0 | 9016 | |
36586728 | 9017 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 9018 | { |
36586728 | 9019 | *n_allocated *= 2; |
224c3ddb SM |
9020 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
9021 | *all_comp_units, *n_allocated); | |
ae038cb0 | 9022 | } |
36586728 TT |
9023 | (*all_comp_units)[*n_comp_units] = this_cu; |
9024 | ++*n_comp_units; | |
ae038cb0 DJ |
9025 | |
9026 | info_ptr = info_ptr + this_cu->length; | |
9027 | } | |
36586728 TT |
9028 | } |
9029 | ||
9030 | /* Create a list of all compilation units in OBJFILE. | |
9031 | This is only done for -readnow and building partial symtabs. */ | |
9032 | ||
9033 | static void | |
ed2dc618 | 9034 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 TT |
9035 | { |
9036 | int n_allocated; | |
9037 | int n_comp_units; | |
9038 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 9039 | struct dwz_file *dwz; |
ed2dc618 | 9040 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
36586728 TT |
9041 | |
9042 | n_comp_units = 0; | |
9043 | n_allocated = 10; | |
8d749320 | 9044 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 | 9045 | |
ed2dc618 | 9046 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
f1902523 | 9047 | &dwarf2_per_objfile->abbrev, 0, |
36586728 TT |
9048 | &n_allocated, &n_comp_units, &all_comp_units); |
9049 | ||
ed2dc618 | 9050 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 9051 | if (dwz != NULL) |
ed2dc618 SM |
9052 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
9053 | 1, &n_allocated, &n_comp_units, | |
4db1a1dc | 9054 | &all_comp_units); |
ae038cb0 | 9055 | |
8d749320 SM |
9056 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
9057 | struct dwarf2_per_cu_data *, | |
9058 | n_comp_units); | |
ae038cb0 DJ |
9059 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
9060 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
9061 | xfree (all_comp_units); | |
9062 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
9063 | } |
9064 | ||
5734ee8b | 9065 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 9066 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 9067 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
9068 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
9069 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 9070 | |
72bf9492 DJ |
9071 | static void |
9072 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
9073 | CORE_ADDR *highpc, int set_addrmap, |
9074 | struct dwarf2_cu *cu) | |
c906108c | 9075 | { |
72bf9492 | 9076 | struct partial_die_info *pdi; |
c906108c | 9077 | |
91c24f0a DC |
9078 | /* Now, march along the PDI's, descending into ones which have |
9079 | interesting children but skipping the children of the other ones, | |
9080 | until we reach the end of the compilation unit. */ | |
c906108c | 9081 | |
72bf9492 | 9082 | pdi = first_die; |
91c24f0a | 9083 | |
72bf9492 DJ |
9084 | while (pdi != NULL) |
9085 | { | |
52356b79 | 9086 | pdi->fixup (cu); |
c906108c | 9087 | |
f55ee35c | 9088 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
9089 | children, so we need to look at them. Ditto for anonymous |
9090 | enums. */ | |
933c6fe4 | 9091 | |
72bf9492 | 9092 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 9093 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
9094 | || pdi->tag == DW_TAG_imported_unit |
9095 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 9096 | { |
72bf9492 | 9097 | switch (pdi->tag) |
c906108c SS |
9098 | { |
9099 | case DW_TAG_subprogram: | |
b1dc1806 | 9100 | case DW_TAG_inlined_subroutine: |
cdc07690 | 9101 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 9102 | break; |
72929c62 | 9103 | case DW_TAG_constant: |
c906108c SS |
9104 | case DW_TAG_variable: |
9105 | case DW_TAG_typedef: | |
91c24f0a | 9106 | case DW_TAG_union_type: |
72bf9492 | 9107 | if (!pdi->is_declaration) |
63d06c5c | 9108 | { |
72bf9492 | 9109 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
9110 | } |
9111 | break; | |
c906108c | 9112 | case DW_TAG_class_type: |
680b30c7 | 9113 | case DW_TAG_interface_type: |
c906108c | 9114 | case DW_TAG_structure_type: |
72bf9492 | 9115 | if (!pdi->is_declaration) |
c906108c | 9116 | { |
72bf9492 | 9117 | add_partial_symbol (pdi, cu); |
c906108c | 9118 | } |
e98c9e7c TT |
9119 | if (cu->language == language_rust && pdi->has_children) |
9120 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
9121 | set_addrmap, cu); | |
c906108c | 9122 | break; |
91c24f0a | 9123 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
9124 | if (!pdi->is_declaration) |
9125 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
9126 | break; |
9127 | case DW_TAG_base_type: | |
a02abb62 | 9128 | case DW_TAG_subrange_type: |
c906108c | 9129 | /* File scope base type definitions are added to the partial |
c5aa993b | 9130 | symbol table. */ |
72bf9492 | 9131 | add_partial_symbol (pdi, cu); |
c906108c | 9132 | break; |
d9fa45fe | 9133 | case DW_TAG_namespace: |
cdc07690 | 9134 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 9135 | break; |
5d7cb8df | 9136 | case DW_TAG_module: |
cdc07690 | 9137 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 9138 | break; |
95554aad TT |
9139 | case DW_TAG_imported_unit: |
9140 | { | |
9141 | struct dwarf2_per_cu_data *per_cu; | |
9142 | ||
f4dc4d17 DE |
9143 | /* For now we don't handle imported units in type units. */ |
9144 | if (cu->per_cu->is_debug_types) | |
9145 | { | |
9146 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9147 | " supported in type units [in module %s]"), | |
518817b3 | 9148 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9149 | } |
9150 | ||
e3b94546 SM |
9151 | per_cu = dwarf2_find_containing_comp_unit |
9152 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 9153 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
9154 | |
9155 | /* Go read the partial unit, if needed. */ | |
9156 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 9157 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 9158 | |
f4dc4d17 | 9159 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 9160 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
9161 | } |
9162 | break; | |
74921315 KS |
9163 | case DW_TAG_imported_declaration: |
9164 | add_partial_symbol (pdi, cu); | |
9165 | break; | |
c906108c SS |
9166 | default: |
9167 | break; | |
9168 | } | |
9169 | } | |
9170 | ||
72bf9492 DJ |
9171 | /* If the die has a sibling, skip to the sibling. */ |
9172 | ||
9173 | pdi = pdi->die_sibling; | |
9174 | } | |
9175 | } | |
9176 | ||
9177 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 9178 | |
72bf9492 | 9179 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 9180 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
9181 | Enumerators are an exception; they use the scope of their parent |
9182 | enumeration type, i.e. the name of the enumeration type is not | |
9183 | prepended to the enumerator. | |
91c24f0a | 9184 | |
72bf9492 DJ |
9185 | There are two complexities. One is DW_AT_specification; in this |
9186 | case "parent" means the parent of the target of the specification, | |
9187 | instead of the direct parent of the DIE. The other is compilers | |
9188 | which do not emit DW_TAG_namespace; in this case we try to guess | |
9189 | the fully qualified name of structure types from their members' | |
9190 | linkage names. This must be done using the DIE's children rather | |
9191 | than the children of any DW_AT_specification target. We only need | |
9192 | to do this for structures at the top level, i.e. if the target of | |
9193 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
9194 | have a parent. */ | |
9195 | ||
9196 | /* Compute the scope prefix associated with PDI's parent, in | |
9197 | compilation unit CU. The result will be allocated on CU's | |
9198 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
9199 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 9200 | static const char * |
72bf9492 DJ |
9201 | partial_die_parent_scope (struct partial_die_info *pdi, |
9202 | struct dwarf2_cu *cu) | |
9203 | { | |
15d034d0 | 9204 | const char *grandparent_scope; |
72bf9492 | 9205 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 9206 | |
72bf9492 DJ |
9207 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
9208 | then this means the parent of the specification DIE. */ | |
9209 | ||
9210 | real_pdi = pdi; | |
72bf9492 | 9211 | while (real_pdi->has_specification) |
36586728 TT |
9212 | real_pdi = find_partial_die (real_pdi->spec_offset, |
9213 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
9214 | |
9215 | parent = real_pdi->die_parent; | |
9216 | if (parent == NULL) | |
9217 | return NULL; | |
9218 | ||
9219 | if (parent->scope_set) | |
9220 | return parent->scope; | |
9221 | ||
52356b79 | 9222 | parent->fixup (cu); |
72bf9492 | 9223 | |
10b3939b | 9224 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 9225 | |
acebe513 UW |
9226 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
9227 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
9228 | Work around this problem here. */ | |
9229 | if (cu->language == language_cplus | |
6e70227d | 9230 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
9231 | && strcmp (parent->name, "::") == 0 |
9232 | && grandparent_scope == NULL) | |
9233 | { | |
9234 | parent->scope = NULL; | |
9235 | parent->scope_set = 1; | |
9236 | return NULL; | |
9237 | } | |
9238 | ||
9c6c53f7 SA |
9239 | if (pdi->tag == DW_TAG_enumerator) |
9240 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
9241 | parent->scope = grandparent_scope; | |
9242 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 9243 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
9244 | || parent->tag == DW_TAG_structure_type |
9245 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 9246 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
9247 | || parent->tag == DW_TAG_union_type |
9248 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
9249 | { |
9250 | if (grandparent_scope == NULL) | |
9251 | parent->scope = parent->name; | |
9252 | else | |
3e43a32a MS |
9253 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
9254 | grandparent_scope, | |
f55ee35c | 9255 | parent->name, 0, cu); |
72bf9492 | 9256 | } |
72bf9492 DJ |
9257 | else |
9258 | { | |
9259 | /* FIXME drow/2004-04-01: What should we be doing with | |
9260 | function-local names? For partial symbols, we should probably be | |
9261 | ignoring them. */ | |
9262 | complaint (&symfile_complaints, | |
9d8780f0 SM |
9263 | _("unhandled containing DIE tag %d for DIE at %s"), |
9264 | parent->tag, sect_offset_str (pdi->sect_off)); | |
72bf9492 | 9265 | parent->scope = grandparent_scope; |
c906108c SS |
9266 | } |
9267 | ||
72bf9492 DJ |
9268 | parent->scope_set = 1; |
9269 | return parent->scope; | |
9270 | } | |
9271 | ||
9272 | /* Return the fully scoped name associated with PDI, from compilation unit | |
9273 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 9274 | |
72bf9492 DJ |
9275 | static char * |
9276 | partial_die_full_name (struct partial_die_info *pdi, | |
9277 | struct dwarf2_cu *cu) | |
9278 | { | |
15d034d0 | 9279 | const char *parent_scope; |
72bf9492 | 9280 | |
98bfdba5 PA |
9281 | /* If this is a template instantiation, we can not work out the |
9282 | template arguments from partial DIEs. So, unfortunately, we have | |
9283 | to go through the full DIEs. At least any work we do building | |
9284 | types here will be reused if full symbols are loaded later. */ | |
9285 | if (pdi->has_template_arguments) | |
9286 | { | |
52356b79 | 9287 | pdi->fixup (cu); |
98bfdba5 PA |
9288 | |
9289 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
9290 | { | |
9291 | struct die_info *die; | |
9292 | struct attribute attr; | |
9293 | struct dwarf2_cu *ref_cu = cu; | |
9294 | ||
b64f50a1 | 9295 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 9296 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 9297 | attr.form = DW_FORM_ref_addr; |
9c541725 | 9298 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
9299 | die = follow_die_ref (NULL, &attr, &ref_cu); |
9300 | ||
9301 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
9302 | } | |
9303 | } | |
9304 | ||
72bf9492 DJ |
9305 | parent_scope = partial_die_parent_scope (pdi, cu); |
9306 | if (parent_scope == NULL) | |
9307 | return NULL; | |
9308 | else | |
f55ee35c | 9309 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
9310 | } |
9311 | ||
9312 | static void | |
72bf9492 | 9313 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 9314 | { |
518817b3 SM |
9315 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9316 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 9317 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9318 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 9319 | CORE_ADDR addr = 0; |
15d034d0 | 9320 | const char *actual_name = NULL; |
e142c38c | 9321 | CORE_ADDR baseaddr; |
15d034d0 | 9322 | char *built_actual_name; |
e142c38c DJ |
9323 | |
9324 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9325 | |
15d034d0 TT |
9326 | built_actual_name = partial_die_full_name (pdi, cu); |
9327 | if (built_actual_name != NULL) | |
9328 | actual_name = built_actual_name; | |
63d06c5c | 9329 | |
72bf9492 DJ |
9330 | if (actual_name == NULL) |
9331 | actual_name = pdi->name; | |
9332 | ||
c906108c SS |
9333 | switch (pdi->tag) |
9334 | { | |
b1dc1806 | 9335 | case DW_TAG_inlined_subroutine: |
c906108c | 9336 | case DW_TAG_subprogram: |
3e29f34a | 9337 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 9338 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 9339 | { |
2cfa0c8d JB |
9340 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
9341 | of the global scope. But in Ada, we want to be able to access | |
9342 | nested procedures globally. So all Ada subprograms are stored | |
9343 | in the global scope. */ | |
f47fb265 | 9344 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9345 | built_actual_name != NULL, |
f47fb265 MS |
9346 | VAR_DOMAIN, LOC_BLOCK, |
9347 | &objfile->global_psymbols, | |
1762568f | 9348 | addr, cu->language, objfile); |
c906108c SS |
9349 | } |
9350 | else | |
9351 | { | |
f47fb265 | 9352 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9353 | built_actual_name != NULL, |
f47fb265 MS |
9354 | VAR_DOMAIN, LOC_BLOCK, |
9355 | &objfile->static_psymbols, | |
1762568f | 9356 | addr, cu->language, objfile); |
c906108c | 9357 | } |
0c1b455e TT |
9358 | |
9359 | if (pdi->main_subprogram && actual_name != NULL) | |
9360 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 9361 | break; |
72929c62 JB |
9362 | case DW_TAG_constant: |
9363 | { | |
af5bf4ad | 9364 | std::vector<partial_symbol *> *list; |
72929c62 JB |
9365 | |
9366 | if (pdi->is_external) | |
9367 | list = &objfile->global_psymbols; | |
9368 | else | |
9369 | list = &objfile->static_psymbols; | |
f47fb265 | 9370 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9371 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 9372 | list, 0, cu->language, objfile); |
72929c62 JB |
9373 | } |
9374 | break; | |
c906108c | 9375 | case DW_TAG_variable: |
95554aad TT |
9376 | if (pdi->d.locdesc) |
9377 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 9378 | |
95554aad | 9379 | if (pdi->d.locdesc |
caac4577 JG |
9380 | && addr == 0 |
9381 | && !dwarf2_per_objfile->has_section_at_zero) | |
9382 | { | |
9383 | /* A global or static variable may also have been stripped | |
9384 | out by the linker if unused, in which case its address | |
9385 | will be nullified; do not add such variables into partial | |
9386 | symbol table then. */ | |
9387 | } | |
9388 | else if (pdi->is_external) | |
c906108c SS |
9389 | { |
9390 | /* Global Variable. | |
9391 | Don't enter into the minimal symbol tables as there is | |
9392 | a minimal symbol table entry from the ELF symbols already. | |
9393 | Enter into partial symbol table if it has a location | |
9394 | descriptor or a type. | |
9395 | If the location descriptor is missing, new_symbol will create | |
9396 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
9397 | be determined from the minimal symbol table whenever the variable | |
9398 | is referenced. | |
9399 | The address for the partial symbol table entry is not | |
9400 | used by GDB, but it comes in handy for debugging partial symbol | |
9401 | table building. */ | |
9402 | ||
95554aad | 9403 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 9404 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9405 | built_actual_name != NULL, |
f47fb265 MS |
9406 | VAR_DOMAIN, LOC_STATIC, |
9407 | &objfile->global_psymbols, | |
1762568f | 9408 | addr + baseaddr, |
f47fb265 | 9409 | cu->language, objfile); |
c906108c SS |
9410 | } |
9411 | else | |
9412 | { | |
ff908ebf AW |
9413 | int has_loc = pdi->d.locdesc != NULL; |
9414 | ||
9415 | /* Static Variable. Skip symbols whose value we cannot know (those | |
9416 | without location descriptors or constant values). */ | |
9417 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 9418 | { |
15d034d0 | 9419 | xfree (built_actual_name); |
decbce07 MS |
9420 | return; |
9421 | } | |
ff908ebf | 9422 | |
f47fb265 | 9423 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9424 | built_actual_name != NULL, |
f47fb265 MS |
9425 | VAR_DOMAIN, LOC_STATIC, |
9426 | &objfile->static_psymbols, | |
ff908ebf | 9427 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 9428 | cu->language, objfile); |
c906108c SS |
9429 | } |
9430 | break; | |
9431 | case DW_TAG_typedef: | |
9432 | case DW_TAG_base_type: | |
a02abb62 | 9433 | case DW_TAG_subrange_type: |
38d518c9 | 9434 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9435 | built_actual_name != NULL, |
176620f1 | 9436 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 9437 | &objfile->static_psymbols, |
1762568f | 9438 | 0, cu->language, objfile); |
c906108c | 9439 | break; |
74921315 | 9440 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
9441 | case DW_TAG_namespace: |
9442 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 9443 | built_actual_name != NULL, |
72bf9492 DJ |
9444 | VAR_DOMAIN, LOC_TYPEDEF, |
9445 | &objfile->global_psymbols, | |
1762568f | 9446 | 0, cu->language, objfile); |
72bf9492 | 9447 | break; |
530e8392 KB |
9448 | case DW_TAG_module: |
9449 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9450 | built_actual_name != NULL, | |
9451 | MODULE_DOMAIN, LOC_TYPEDEF, | |
9452 | &objfile->global_psymbols, | |
1762568f | 9453 | 0, cu->language, objfile); |
530e8392 | 9454 | break; |
c906108c | 9455 | case DW_TAG_class_type: |
680b30c7 | 9456 | case DW_TAG_interface_type: |
c906108c SS |
9457 | case DW_TAG_structure_type: |
9458 | case DW_TAG_union_type: | |
9459 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9460 | /* Skip external references. The DWARF standard says in the section |
9461 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9462 | structure, union or class type is represented by a structure, | |
9463 | union or class entry that does not have a byte size attribute | |
9464 | and that has a DW_AT_declaration attribute." */ | |
9465 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9466 | { |
15d034d0 | 9467 | xfree (built_actual_name); |
decbce07 MS |
9468 | return; |
9469 | } | |
fa4028e9 | 9470 | |
63d06c5c DC |
9471 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9472 | static vs. global. */ | |
38d518c9 | 9473 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9474 | built_actual_name != NULL, |
176620f1 | 9475 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 9476 | cu->language == language_cplus |
63d06c5c DC |
9477 | ? &objfile->global_psymbols |
9478 | : &objfile->static_psymbols, | |
1762568f | 9479 | 0, cu->language, objfile); |
c906108c | 9480 | |
c906108c SS |
9481 | break; |
9482 | case DW_TAG_enumerator: | |
38d518c9 | 9483 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9484 | built_actual_name != NULL, |
176620f1 | 9485 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 9486 | cu->language == language_cplus |
f6fe98ef DJ |
9487 | ? &objfile->global_psymbols |
9488 | : &objfile->static_psymbols, | |
1762568f | 9489 | 0, cu->language, objfile); |
c906108c SS |
9490 | break; |
9491 | default: | |
9492 | break; | |
9493 | } | |
5c4e30ca | 9494 | |
15d034d0 | 9495 | xfree (built_actual_name); |
c906108c SS |
9496 | } |
9497 | ||
5c4e30ca DC |
9498 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9499 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9500 | the name of the enclosing namespace. */ | |
91c24f0a | 9501 | |
72bf9492 DJ |
9502 | static void |
9503 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9504 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9505 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9506 | { |
72bf9492 | 9507 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9508 | |
72bf9492 | 9509 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9510 | |
9511 | /* Now scan partial symbols in that namespace. */ | |
9512 | ||
91c24f0a | 9513 | if (pdi->has_children) |
cdc07690 | 9514 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9515 | } |
9516 | ||
5d7cb8df JK |
9517 | /* Read a partial die corresponding to a Fortran module. */ |
9518 | ||
9519 | static void | |
9520 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9521 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9522 | { |
530e8392 KB |
9523 | /* Add a symbol for the namespace. */ |
9524 | ||
9525 | add_partial_symbol (pdi, cu); | |
9526 | ||
f55ee35c | 9527 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9528 | |
9529 | if (pdi->has_children) | |
cdc07690 | 9530 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9531 | } |
9532 | ||
b1dc1806 XR |
9533 | /* Read a partial die corresponding to a subprogram or an inlined |
9534 | subprogram and create a partial symbol for that subprogram. | |
9535 | When the CU language allows it, this routine also defines a partial | |
9536 | symbol for each nested subprogram that this subprogram contains. | |
9537 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9538 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9539 | |
cdc07690 YQ |
9540 | PDI may also be a lexical block, in which case we simply search |
9541 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9542 | Again, this is only performed when the CU language allows this |
9543 | type of definitions. */ | |
9544 | ||
9545 | static void | |
9546 | add_partial_subprogram (struct partial_die_info *pdi, | |
9547 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9548 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9549 | { |
b1dc1806 | 9550 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9551 | { |
9552 | if (pdi->has_pc_info) | |
9553 | { | |
9554 | if (pdi->lowpc < *lowpc) | |
9555 | *lowpc = pdi->lowpc; | |
9556 | if (pdi->highpc > *highpc) | |
9557 | *highpc = pdi->highpc; | |
cdc07690 | 9558 | if (set_addrmap) |
5734ee8b | 9559 | { |
518817b3 | 9560 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9561 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9562 | CORE_ADDR baseaddr; | |
9563 | CORE_ADDR highpc; | |
9564 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9565 | |
9566 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9567 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
9568 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
9569 | pdi->lowpc + baseaddr); | |
9570 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
9571 | pdi->highpc + baseaddr); | |
9572 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 9573 | cu->per_cu->v.psymtab); |
5734ee8b | 9574 | } |
481860b3 GB |
9575 | } |
9576 | ||
9577 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9578 | { | |
bc30ff58 | 9579 | if (!pdi->is_declaration) |
e8d05480 JB |
9580 | /* Ignore subprogram DIEs that do not have a name, they are |
9581 | illegal. Do not emit a complaint at this point, we will | |
9582 | do so when we convert this psymtab into a symtab. */ | |
9583 | if (pdi->name) | |
9584 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9585 | } |
9586 | } | |
6e70227d | 9587 | |
bc30ff58 JB |
9588 | if (! pdi->has_children) |
9589 | return; | |
9590 | ||
9591 | if (cu->language == language_ada) | |
9592 | { | |
9593 | pdi = pdi->die_child; | |
9594 | while (pdi != NULL) | |
9595 | { | |
52356b79 | 9596 | pdi->fixup (cu); |
bc30ff58 | 9597 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9598 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9599 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9600 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9601 | pdi = pdi->die_sibling; |
9602 | } | |
9603 | } | |
9604 | } | |
9605 | ||
91c24f0a DC |
9606 | /* Read a partial die corresponding to an enumeration type. */ |
9607 | ||
72bf9492 DJ |
9608 | static void |
9609 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9610 | struct dwarf2_cu *cu) | |
91c24f0a | 9611 | { |
72bf9492 | 9612 | struct partial_die_info *pdi; |
91c24f0a DC |
9613 | |
9614 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9615 | add_partial_symbol (enum_pdi, cu); |
9616 | ||
9617 | pdi = enum_pdi->die_child; | |
9618 | while (pdi) | |
91c24f0a | 9619 | { |
72bf9492 | 9620 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 9621 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 9622 | else |
72bf9492 DJ |
9623 | add_partial_symbol (pdi, cu); |
9624 | pdi = pdi->die_sibling; | |
91c24f0a | 9625 | } |
91c24f0a DC |
9626 | } |
9627 | ||
6caca83c CC |
9628 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9629 | ||
9630 | static unsigned int | |
d521ce57 | 9631 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9632 | { |
9633 | unsigned int bytes_read; | |
9634 | ||
9635 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9636 | } | |
9637 | ||
685af9cd TT |
9638 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9639 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9640 | ||
4bb7a0a7 DJ |
9641 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9642 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9643 | the initial number. */ | |
9644 | ||
9645 | static struct abbrev_info * | |
685af9cd TT |
9646 | peek_die_abbrev (const die_reader_specs &reader, |
9647 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9648 | { |
685af9cd | 9649 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9650 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9651 | unsigned int abbrev_number |
9652 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9653 | |
9654 | if (abbrev_number == 0) | |
9655 | return NULL; | |
9656 | ||
685af9cd | 9657 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9658 | if (!abbrev) |
9659 | { | |
422b9917 | 9660 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9661 | " at offset %s [in module %s]"), |
422b9917 | 9662 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9663 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9664 | } |
9665 | ||
9666 | return abbrev; | |
9667 | } | |
9668 | ||
93311388 DE |
9669 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9670 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9671 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9672 | ||
d521ce57 TT |
9673 | static const gdb_byte * |
9674 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9675 | { |
4bb7a0a7 DJ |
9676 | while (1) |
9677 | { | |
685af9cd TT |
9678 | unsigned int bytes_read; |
9679 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9680 | ||
4bb7a0a7 DJ |
9681 | if (abbrev == NULL) |
9682 | return info_ptr + bytes_read; | |
9683 | else | |
dee91e82 | 9684 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9685 | } |
9686 | } | |
9687 | ||
93311388 DE |
9688 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9689 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9690 | abbrev corresponding to that skipped uleb128 should be passed in |
9691 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9692 | children. */ | |
9693 | ||
d521ce57 TT |
9694 | static const gdb_byte * |
9695 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9696 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9697 | { |
9698 | unsigned int bytes_read; | |
9699 | struct attribute attr; | |
dee91e82 DE |
9700 | bfd *abfd = reader->abfd; |
9701 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9702 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9703 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9704 | unsigned int form, i; |
9705 | ||
9706 | for (i = 0; i < abbrev->num_attrs; i++) | |
9707 | { | |
9708 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9709 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9710 | { | |
dee91e82 | 9711 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9712 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
9713 | complaint (&symfile_complaints, |
9714 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 9715 | else |
b9502d3f | 9716 | { |
9c541725 PA |
9717 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9718 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9719 | |
9720 | if (sibling_ptr < info_ptr) | |
9721 | complaint (&symfile_complaints, | |
9722 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
9723 | else if (sibling_ptr > reader->buffer_end) |
9724 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9725 | else |
9726 | return sibling_ptr; | |
9727 | } | |
4bb7a0a7 DJ |
9728 | } |
9729 | ||
9730 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9731 | form = abbrev->attrs[i].form; | |
9732 | skip_attribute: | |
9733 | switch (form) | |
9734 | { | |
4bb7a0a7 | 9735 | case DW_FORM_ref_addr: |
ae411497 TT |
9736 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9737 | and later it is offset sized. */ | |
9738 | if (cu->header.version == 2) | |
9739 | info_ptr += cu->header.addr_size; | |
9740 | else | |
9741 | info_ptr += cu->header.offset_size; | |
9742 | break; | |
36586728 TT |
9743 | case DW_FORM_GNU_ref_alt: |
9744 | info_ptr += cu->header.offset_size; | |
9745 | break; | |
ae411497 | 9746 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9747 | info_ptr += cu->header.addr_size; |
9748 | break; | |
9749 | case DW_FORM_data1: | |
9750 | case DW_FORM_ref1: | |
9751 | case DW_FORM_flag: | |
9752 | info_ptr += 1; | |
9753 | break; | |
2dc7f7b3 | 9754 | case DW_FORM_flag_present: |
43988095 | 9755 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9756 | break; |
4bb7a0a7 DJ |
9757 | case DW_FORM_data2: |
9758 | case DW_FORM_ref2: | |
9759 | info_ptr += 2; | |
9760 | break; | |
9761 | case DW_FORM_data4: | |
9762 | case DW_FORM_ref4: | |
9763 | info_ptr += 4; | |
9764 | break; | |
9765 | case DW_FORM_data8: | |
9766 | case DW_FORM_ref8: | |
55f1336d | 9767 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9768 | info_ptr += 8; |
9769 | break; | |
0224619f JK |
9770 | case DW_FORM_data16: |
9771 | info_ptr += 16; | |
9772 | break; | |
4bb7a0a7 | 9773 | case DW_FORM_string: |
9b1c24c8 | 9774 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9775 | info_ptr += bytes_read; |
9776 | break; | |
2dc7f7b3 | 9777 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9778 | case DW_FORM_strp: |
36586728 | 9779 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9780 | info_ptr += cu->header.offset_size; |
9781 | break; | |
2dc7f7b3 | 9782 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9783 | case DW_FORM_block: |
9784 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9785 | info_ptr += bytes_read; | |
9786 | break; | |
9787 | case DW_FORM_block1: | |
9788 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9789 | break; | |
9790 | case DW_FORM_block2: | |
9791 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9792 | break; | |
9793 | case DW_FORM_block4: | |
9794 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9795 | break; | |
9796 | case DW_FORM_sdata: | |
9797 | case DW_FORM_udata: | |
9798 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9799 | case DW_FORM_GNU_addr_index: |
9800 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9801 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9802 | break; |
9803 | case DW_FORM_indirect: | |
9804 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9805 | info_ptr += bytes_read; | |
9806 | /* We need to continue parsing from here, so just go back to | |
9807 | the top. */ | |
9808 | goto skip_attribute; | |
9809 | ||
9810 | default: | |
3e43a32a MS |
9811 | error (_("Dwarf Error: Cannot handle %s " |
9812 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9813 | dwarf_form_name (form), |
9814 | bfd_get_filename (abfd)); | |
9815 | } | |
9816 | } | |
9817 | ||
9818 | if (abbrev->has_children) | |
dee91e82 | 9819 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9820 | else |
9821 | return info_ptr; | |
9822 | } | |
9823 | ||
93311388 | 9824 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9825 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9826 | |
d521ce57 | 9827 | static const gdb_byte * |
dee91e82 DE |
9828 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9829 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9830 | const gdb_byte *info_ptr) |
91c24f0a DC |
9831 | { |
9832 | /* Do we know the sibling already? */ | |
72bf9492 | 9833 | |
91c24f0a DC |
9834 | if (orig_pdi->sibling) |
9835 | return orig_pdi->sibling; | |
9836 | ||
9837 | /* Are there any children to deal with? */ | |
9838 | ||
9839 | if (!orig_pdi->has_children) | |
9840 | return info_ptr; | |
9841 | ||
4bb7a0a7 | 9842 | /* Skip the children the long way. */ |
91c24f0a | 9843 | |
dee91e82 | 9844 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9845 | } |
9846 | ||
257e7a09 | 9847 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9848 | not NULL. */ |
c906108c SS |
9849 | |
9850 | static void | |
257e7a09 YQ |
9851 | dwarf2_read_symtab (struct partial_symtab *self, |
9852 | struct objfile *objfile) | |
c906108c | 9853 | { |
ed2dc618 SM |
9854 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9855 | = get_dwarf2_per_objfile (objfile); | |
9856 | ||
257e7a09 | 9857 | if (self->readin) |
c906108c | 9858 | { |
442e4d9c | 9859 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9860 | self->filename); |
442e4d9c YQ |
9861 | } |
9862 | else | |
9863 | { | |
9864 | if (info_verbose) | |
c906108c | 9865 | { |
442e4d9c | 9866 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9867 | self->filename); |
442e4d9c | 9868 | gdb_flush (gdb_stdout); |
c906108c | 9869 | } |
c906108c | 9870 | |
442e4d9c YQ |
9871 | /* If this psymtab is constructed from a debug-only objfile, the |
9872 | has_section_at_zero flag will not necessarily be correct. We | |
9873 | can get the correct value for this flag by looking at the data | |
9874 | associated with the (presumably stripped) associated objfile. */ | |
9875 | if (objfile->separate_debug_objfile_backlink) | |
9876 | { | |
9877 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9878 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9879 | |
442e4d9c YQ |
9880 | dwarf2_per_objfile->has_section_at_zero |
9881 | = dpo_backlink->has_section_at_zero; | |
9882 | } | |
b2ab525c | 9883 | |
442e4d9c | 9884 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9885 | |
257e7a09 | 9886 | psymtab_to_symtab_1 (self); |
c906108c | 9887 | |
442e4d9c YQ |
9888 | /* Finish up the debug error message. */ |
9889 | if (info_verbose) | |
9890 | printf_filtered (_("done.\n")); | |
c906108c | 9891 | } |
95554aad | 9892 | |
ed2dc618 | 9893 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9894 | } |
9cdd5dbd DE |
9895 | \f |
9896 | /* Reading in full CUs. */ | |
c906108c | 9897 | |
10b3939b DJ |
9898 | /* Add PER_CU to the queue. */ |
9899 | ||
9900 | static void | |
95554aad TT |
9901 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9902 | enum language pretend_language) | |
10b3939b DJ |
9903 | { |
9904 | struct dwarf2_queue_item *item; | |
9905 | ||
9906 | per_cu->queued = 1; | |
8d749320 | 9907 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9908 | item->per_cu = per_cu; |
95554aad | 9909 | item->pretend_language = pretend_language; |
10b3939b DJ |
9910 | item->next = NULL; |
9911 | ||
9912 | if (dwarf2_queue == NULL) | |
9913 | dwarf2_queue = item; | |
9914 | else | |
9915 | dwarf2_queue_tail->next = item; | |
9916 | ||
9917 | dwarf2_queue_tail = item; | |
9918 | } | |
9919 | ||
89e63ee4 DE |
9920 | /* If PER_CU is not yet queued, add it to the queue. |
9921 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9922 | dependency. | |
0907af0c | 9923 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9924 | meaning either PER_CU is already queued or it is already loaded. |
9925 | ||
9926 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9927 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9928 | |
9929 | static int | |
89e63ee4 | 9930 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9931 | struct dwarf2_per_cu_data *per_cu, |
9932 | enum language pretend_language) | |
9933 | { | |
9934 | /* We may arrive here during partial symbol reading, if we need full | |
9935 | DIEs to process an unusual case (e.g. template arguments). Do | |
9936 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9937 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9938 | { |
9939 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9940 | return 1; | |
9941 | return 0; | |
9942 | } | |
9943 | ||
9944 | /* Mark the dependence relation so that we don't flush PER_CU | |
9945 | too early. */ | |
89e63ee4 DE |
9946 | if (dependent_cu != NULL) |
9947 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9948 | |
9949 | /* If it's already on the queue, we have nothing to do. */ | |
9950 | if (per_cu->queued) | |
9951 | return 0; | |
9952 | ||
9953 | /* If the compilation unit is already loaded, just mark it as | |
9954 | used. */ | |
9955 | if (per_cu->cu != NULL) | |
9956 | { | |
9957 | per_cu->cu->last_used = 0; | |
9958 | return 0; | |
9959 | } | |
9960 | ||
9961 | /* Add it to the queue. */ | |
9962 | queue_comp_unit (per_cu, pretend_language); | |
9963 | ||
9964 | return 1; | |
9965 | } | |
9966 | ||
10b3939b DJ |
9967 | /* Process the queue. */ |
9968 | ||
9969 | static void | |
ed2dc618 | 9970 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9971 | { |
9972 | struct dwarf2_queue_item *item, *next_item; | |
9973 | ||
b4f54984 | 9974 | if (dwarf_read_debug) |
45cfd468 DE |
9975 | { |
9976 | fprintf_unfiltered (gdb_stdlog, | |
9977 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9978 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9979 | } |
9980 | ||
03dd20cc DJ |
9981 | /* The queue starts out with one item, but following a DIE reference |
9982 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9983 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9984 | { | |
cc12ce38 DE |
9985 | if ((dwarf2_per_objfile->using_index |
9986 | ? !item->per_cu->v.quick->compunit_symtab | |
9987 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9988 | /* Skip dummy CUs. */ | |
9989 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9990 | { |
9991 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9992 | unsigned int debug_print_threshold; |
247f5c4f | 9993 | char buf[100]; |
f4dc4d17 | 9994 | |
247f5c4f | 9995 | if (per_cu->is_debug_types) |
f4dc4d17 | 9996 | { |
247f5c4f DE |
9997 | struct signatured_type *sig_type = |
9998 | (struct signatured_type *) per_cu; | |
9999 | ||
9d8780f0 | 10000 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 10001 | hex_string (sig_type->signature), |
9d8780f0 | 10002 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
10003 | /* There can be 100s of TUs. |
10004 | Only print them in verbose mode. */ | |
10005 | debug_print_threshold = 2; | |
f4dc4d17 | 10006 | } |
247f5c4f | 10007 | else |
73be47f5 | 10008 | { |
9d8780f0 SM |
10009 | sprintf (buf, "CU at offset %s", |
10010 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
10011 | debug_print_threshold = 1; |
10012 | } | |
247f5c4f | 10013 | |
b4f54984 | 10014 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 10015 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
10016 | |
10017 | if (per_cu->is_debug_types) | |
10018 | process_full_type_unit (per_cu, item->pretend_language); | |
10019 | else | |
10020 | process_full_comp_unit (per_cu, item->pretend_language); | |
10021 | ||
b4f54984 | 10022 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 10023 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 10024 | } |
10b3939b DJ |
10025 | |
10026 | item->per_cu->queued = 0; | |
10027 | next_item = item->next; | |
10028 | xfree (item); | |
10029 | } | |
10030 | ||
10031 | dwarf2_queue_tail = NULL; | |
45cfd468 | 10032 | |
b4f54984 | 10033 | if (dwarf_read_debug) |
45cfd468 DE |
10034 | { |
10035 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 10036 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 10037 | } |
10b3939b DJ |
10038 | } |
10039 | ||
10b3939b DJ |
10040 | /* Read in full symbols for PST, and anything it depends on. */ |
10041 | ||
c906108c | 10042 | static void |
fba45db2 | 10043 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 10044 | { |
10b3939b | 10045 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
10046 | int i; |
10047 | ||
95554aad TT |
10048 | if (pst->readin) |
10049 | return; | |
10050 | ||
aaa75496 | 10051 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
10052 | if (!pst->dependencies[i]->readin |
10053 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
10054 | { |
10055 | /* Inform about additional files that need to be read in. */ | |
10056 | if (info_verbose) | |
10057 | { | |
a3f17187 | 10058 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
10059 | fputs_filtered (" ", gdb_stdout); |
10060 | wrap_here (""); | |
10061 | fputs_filtered ("and ", gdb_stdout); | |
10062 | wrap_here (""); | |
10063 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 10064 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
10065 | gdb_flush (gdb_stdout); |
10066 | } | |
10067 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
10068 | } | |
10069 | ||
9a3c8263 | 10070 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
10071 | |
10072 | if (per_cu == NULL) | |
aaa75496 JB |
10073 | { |
10074 | /* It's an include file, no symbols to read for it. | |
10075 | Everything is in the parent symtab. */ | |
10076 | pst->readin = 1; | |
10077 | return; | |
10078 | } | |
c906108c | 10079 | |
a0f42c21 | 10080 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
10081 | } |
10082 | ||
dee91e82 DE |
10083 | /* Trivial hash function for die_info: the hash value of a DIE |
10084 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 10085 | |
dee91e82 DE |
10086 | static hashval_t |
10087 | die_hash (const void *item) | |
10b3939b | 10088 | { |
9a3c8263 | 10089 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 10090 | |
9c541725 | 10091 | return to_underlying (die->sect_off); |
dee91e82 | 10092 | } |
63d06c5c | 10093 | |
dee91e82 DE |
10094 | /* Trivial comparison function for die_info structures: two DIEs |
10095 | are equal if they have the same offset. */ | |
98bfdba5 | 10096 | |
dee91e82 DE |
10097 | static int |
10098 | die_eq (const void *item_lhs, const void *item_rhs) | |
10099 | { | |
9a3c8263 SM |
10100 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
10101 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 10102 | |
9c541725 | 10103 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 10104 | } |
c906108c | 10105 | |
dee91e82 DE |
10106 | /* die_reader_func for load_full_comp_unit. |
10107 | This is identical to read_signatured_type_reader, | |
10108 | but is kept separate for now. */ | |
c906108c | 10109 | |
dee91e82 DE |
10110 | static void |
10111 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 10112 | const gdb_byte *info_ptr, |
dee91e82 DE |
10113 | struct die_info *comp_unit_die, |
10114 | int has_children, | |
10115 | void *data) | |
10116 | { | |
10117 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 10118 | enum language *language_ptr = (enum language *) data; |
6caca83c | 10119 | |
dee91e82 DE |
10120 | gdb_assert (cu->die_hash == NULL); |
10121 | cu->die_hash = | |
10122 | htab_create_alloc_ex (cu->header.length / 12, | |
10123 | die_hash, | |
10124 | die_eq, | |
10125 | NULL, | |
10126 | &cu->comp_unit_obstack, | |
10127 | hashtab_obstack_allocate, | |
10128 | dummy_obstack_deallocate); | |
e142c38c | 10129 | |
dee91e82 DE |
10130 | if (has_children) |
10131 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
10132 | &info_ptr, comp_unit_die); | |
10133 | cu->dies = comp_unit_die; | |
10134 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
10135 | |
10136 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 10137 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 10138 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
10139 | or we won't be able to build types correctly. |
10140 | Similarly, if we do not read the producer, we can not apply | |
10141 | producer-specific interpretation. */ | |
95554aad | 10142 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 10143 | } |
10b3939b | 10144 | |
dee91e82 | 10145 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 10146 | |
dee91e82 | 10147 | static void |
95554aad TT |
10148 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
10149 | enum language pretend_language) | |
dee91e82 | 10150 | { |
3019eac3 | 10151 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 10152 | |
f4dc4d17 DE |
10153 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
10154 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
10155 | } |
10156 | ||
3da10d80 KS |
10157 | /* Add a DIE to the delayed physname list. */ |
10158 | ||
10159 | static void | |
10160 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
10161 | const char *name, struct die_info *die, | |
10162 | struct dwarf2_cu *cu) | |
10163 | { | |
10164 | struct delayed_method_info mi; | |
10165 | mi.type = type; | |
10166 | mi.fnfield_index = fnfield_index; | |
10167 | mi.index = index; | |
10168 | mi.name = name; | |
10169 | mi.die = die; | |
c89b44cd | 10170 | cu->method_list.push_back (mi); |
3da10d80 KS |
10171 | } |
10172 | ||
3693fdb3 PA |
10173 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
10174 | "const" / "volatile". If so, decrements LEN by the length of the | |
10175 | modifier and return true. Otherwise return false. */ | |
10176 | ||
10177 | template<size_t N> | |
10178 | static bool | |
10179 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
10180 | { | |
10181 | size_t mod_len = sizeof (mod) - 1; | |
10182 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
10183 | { | |
10184 | len -= mod_len; | |
10185 | return true; | |
10186 | } | |
10187 | return false; | |
10188 | } | |
10189 | ||
3da10d80 KS |
10190 | /* Compute the physnames of any methods on the CU's method list. |
10191 | ||
10192 | The computation of method physnames is delayed in order to avoid the | |
10193 | (bad) condition that one of the method's formal parameters is of an as yet | |
10194 | incomplete type. */ | |
10195 | ||
10196 | static void | |
10197 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
10198 | { | |
3693fdb3 | 10199 | /* Only C++ delays computing physnames. */ |
c89b44cd | 10200 | if (cu->method_list.empty ()) |
3693fdb3 PA |
10201 | return; |
10202 | gdb_assert (cu->language == language_cplus); | |
10203 | ||
c89b44cd | 10204 | for (struct delayed_method_info &mi : cu->method_list) |
3da10d80 | 10205 | { |
1d06ead6 | 10206 | const char *physname; |
3da10d80 | 10207 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
10208 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
10209 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
10210 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 10211 | = physname ? physname : ""; |
3693fdb3 PA |
10212 | |
10213 | /* Since there's no tag to indicate whether a method is a | |
10214 | const/volatile overload, extract that information out of the | |
10215 | demangled name. */ | |
10216 | if (physname != NULL) | |
10217 | { | |
10218 | size_t len = strlen (physname); | |
10219 | ||
10220 | while (1) | |
10221 | { | |
10222 | if (physname[len] == ')') /* shortcut */ | |
10223 | break; | |
10224 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 10225 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 10226 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 10227 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
10228 | else |
10229 | break; | |
10230 | } | |
10231 | } | |
3da10d80 | 10232 | } |
c89b44cd TT |
10233 | |
10234 | /* The list is no longer needed. */ | |
10235 | cu->method_list.clear (); | |
3da10d80 KS |
10236 | } |
10237 | ||
a766d390 DE |
10238 | /* Go objects should be embedded in a DW_TAG_module DIE, |
10239 | and it's not clear if/how imported objects will appear. | |
10240 | To keep Go support simple until that's worked out, | |
10241 | go back through what we've read and create something usable. | |
10242 | We could do this while processing each DIE, and feels kinda cleaner, | |
10243 | but that way is more invasive. | |
10244 | This is to, for example, allow the user to type "p var" or "b main" | |
10245 | without having to specify the package name, and allow lookups | |
10246 | of module.object to work in contexts that use the expression | |
10247 | parser. */ | |
10248 | ||
10249 | static void | |
10250 | fixup_go_packaging (struct dwarf2_cu *cu) | |
10251 | { | |
10252 | char *package_name = NULL; | |
10253 | struct pending *list; | |
10254 | int i; | |
10255 | ||
10256 | for (list = global_symbols; list != NULL; list = list->next) | |
10257 | { | |
10258 | for (i = 0; i < list->nsyms; ++i) | |
10259 | { | |
10260 | struct symbol *sym = list->symbol[i]; | |
10261 | ||
10262 | if (SYMBOL_LANGUAGE (sym) == language_go | |
10263 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
10264 | { | |
10265 | char *this_package_name = go_symbol_package_name (sym); | |
10266 | ||
10267 | if (this_package_name == NULL) | |
10268 | continue; | |
10269 | if (package_name == NULL) | |
10270 | package_name = this_package_name; | |
10271 | else | |
10272 | { | |
518817b3 SM |
10273 | struct objfile *objfile |
10274 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 DE |
10275 | if (strcmp (package_name, this_package_name) != 0) |
10276 | complaint (&symfile_complaints, | |
10277 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
10278 | (symbol_symtab (sym) != NULL |
10279 | ? symtab_to_filename_for_display | |
10280 | (symbol_symtab (sym)) | |
e3b94546 | 10281 | : objfile_name (objfile)), |
a766d390 DE |
10282 | this_package_name, package_name); |
10283 | xfree (this_package_name); | |
10284 | } | |
10285 | } | |
10286 | } | |
10287 | } | |
10288 | ||
10289 | if (package_name != NULL) | |
10290 | { | |
518817b3 | 10291 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 10292 | const char *saved_package_name |
224c3ddb SM |
10293 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
10294 | package_name, | |
10295 | strlen (package_name)); | |
19f392bc UW |
10296 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
10297 | saved_package_name); | |
a766d390 DE |
10298 | struct symbol *sym; |
10299 | ||
10300 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10301 | ||
e623cf5d | 10302 | sym = allocate_symbol (objfile); |
f85f34ed | 10303 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
10304 | SYMBOL_SET_NAMES (sym, saved_package_name, |
10305 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
10306 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
10307 | e.g., "main" finds the "main" module and not C's main(). */ | |
10308 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 10309 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
10310 | SYMBOL_TYPE (sym) = type; |
10311 | ||
10312 | add_symbol_to_list (sym, &global_symbols); | |
10313 | ||
10314 | xfree (package_name); | |
10315 | } | |
10316 | } | |
10317 | ||
c9317f21 TT |
10318 | /* Allocate a fully-qualified name consisting of the two parts on the |
10319 | obstack. */ | |
10320 | ||
10321 | static const char * | |
10322 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
10323 | { | |
10324 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
10325 | } | |
10326 | ||
10327 | /* A helper that allocates a struct discriminant_info to attach to a | |
10328 | union type. */ | |
10329 | ||
10330 | static struct discriminant_info * | |
10331 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
10332 | int default_index) | |
10333 | { | |
10334 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
10335 | gdb_assert (discriminant_index == -1 |
10336 | || (discriminant_index >= 0 | |
10337 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 10338 | gdb_assert (default_index == -1 |
c7b15a66 | 10339 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
10340 | |
10341 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
10342 | ||
10343 | struct discriminant_info *disc | |
10344 | = ((struct discriminant_info *) | |
10345 | TYPE_ZALLOC (type, | |
10346 | offsetof (struct discriminant_info, discriminants) | |
10347 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
10348 | disc->default_index = default_index; | |
10349 | disc->discriminant_index = discriminant_index; | |
10350 | ||
10351 | struct dynamic_prop prop; | |
10352 | prop.kind = PROP_UNDEFINED; | |
10353 | prop.data.baton = disc; | |
10354 | ||
10355 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
10356 | ||
10357 | return disc; | |
10358 | } | |
10359 | ||
10360 | /* Some versions of rustc emitted enums in an unusual way. | |
10361 | ||
10362 | Ordinary enums were emitted as unions. The first element of each | |
10363 | structure in the union was named "RUST$ENUM$DISR". This element | |
10364 | held the discriminant. | |
10365 | ||
10366 | These versions of Rust also implemented the "non-zero" | |
10367 | optimization. When the enum had two values, and one is empty and | |
10368 | the other holds a pointer that cannot be zero, the pointer is used | |
10369 | as the discriminant, with a zero value meaning the empty variant. | |
10370 | Here, the union's first member is of the form | |
10371 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
10372 | where the fieldnos are the indices of the fields that should be | |
10373 | traversed in order to find the field (which may be several fields deep) | |
10374 | and the variantname is the name of the variant of the case when the | |
10375 | field is zero. | |
10376 | ||
10377 | This function recognizes whether TYPE is of one of these forms, | |
10378 | and, if so, smashes it to be a variant type. */ | |
10379 | ||
10380 | static void | |
10381 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
10382 | { | |
10383 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
10384 | ||
10385 | /* We don't need to deal with empty enums. */ | |
10386 | if (TYPE_NFIELDS (type) == 0) | |
10387 | return; | |
10388 | ||
10389 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
10390 | if (TYPE_NFIELDS (type) == 1 | |
10391 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
10392 | { | |
10393 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
10394 | ||
10395 | /* Decode the field name to find the offset of the | |
10396 | discriminant. */ | |
10397 | ULONGEST bit_offset = 0; | |
10398 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
10399 | while (name[0] >= '0' && name[0] <= '9') | |
10400 | { | |
10401 | char *tail; | |
10402 | unsigned long index = strtoul (name, &tail, 10); | |
10403 | name = tail; | |
10404 | if (*name != '$' | |
10405 | || index >= TYPE_NFIELDS (field_type) | |
10406 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
10407 | != FIELD_LOC_KIND_BITPOS)) | |
10408 | { | |
10409 | complaint (&symfile_complaints, | |
10410 | _("Could not parse Rust enum encoding string \"%s\"" | |
10411 | "[in module %s]"), | |
10412 | TYPE_FIELD_NAME (type, 0), | |
10413 | objfile_name (objfile)); | |
10414 | return; | |
10415 | } | |
10416 | ++name; | |
10417 | ||
10418 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
10419 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
10420 | } | |
10421 | ||
10422 | /* Make a union to hold the variants. */ | |
10423 | struct type *union_type = alloc_type (objfile); | |
10424 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10425 | TYPE_NFIELDS (union_type) = 3; | |
10426 | TYPE_FIELDS (union_type) | |
10427 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
10428 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
10429 | ||
10430 | /* Put the discriminant must at index 0. */ | |
10431 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10432 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10433 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10434 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10435 | ||
10436 | /* The order of fields doesn't really matter, so put the real | |
10437 | field at index 1 and the data-less field at index 2. */ | |
10438 | struct discriminant_info *disc | |
10439 | = alloc_discriminant_info (union_type, 0, 1); | |
10440 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10441 | TYPE_FIELD_NAME (union_type, 1) | |
10442 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10443 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10444 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10445 | TYPE_FIELD_NAME (union_type, 1)); | |
10446 | ||
10447 | const char *dataless_name | |
10448 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10449 | name); | |
10450 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10451 | dataless_name); | |
10452 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10453 | /* NAME points into the original discriminant name, which | |
10454 | already has the correct lifetime. */ | |
10455 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10456 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10457 | disc->discriminants[2] = 0; | |
10458 | ||
10459 | /* Smash this type to be a structure type. We have to do this | |
10460 | because the type has already been recorded. */ | |
10461 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10462 | TYPE_NFIELDS (type) = 1; | |
10463 | TYPE_FIELDS (type) | |
10464 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10465 | ||
10466 | /* Install the variant part. */ | |
10467 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10468 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10469 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10470 | } | |
10471 | else if (TYPE_NFIELDS (type) == 1) | |
10472 | { | |
10473 | /* We assume that a union with a single field is a univariant | |
10474 | enum. */ | |
10475 | /* Smash this type to be a structure type. We have to do this | |
10476 | because the type has already been recorded. */ | |
10477 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10478 | ||
10479 | /* Make a union to hold the variants. */ | |
10480 | struct type *union_type = alloc_type (objfile); | |
10481 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10482 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10483 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
10484 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); | |
10485 | ||
10486 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10487 | const char *variant_name | |
10488 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10489 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10490 | TYPE_NAME (field_type) | |
10491 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10492 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10493 | |
10494 | /* Install the union in the outer struct type. */ | |
10495 | TYPE_NFIELDS (type) = 1; | |
10496 | TYPE_FIELDS (type) | |
10497 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10498 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10499 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10500 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10501 | ||
10502 | alloc_discriminant_info (union_type, -1, 0); | |
10503 | } | |
10504 | else | |
10505 | { | |
10506 | struct type *disr_type = nullptr; | |
10507 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10508 | { | |
10509 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10510 | ||
10511 | if (TYPE_NFIELDS (disr_type) == 0) | |
10512 | { | |
10513 | /* Could be data-less variant, so keep going. */ | |
10514 | } | |
10515 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10516 | "RUST$ENUM$DISR") != 0) | |
10517 | { | |
10518 | /* Not a Rust enum. */ | |
10519 | return; | |
10520 | } | |
10521 | else | |
10522 | { | |
10523 | /* Found one. */ | |
10524 | break; | |
10525 | } | |
10526 | } | |
10527 | ||
10528 | /* If we got here without a discriminant, then it's probably | |
10529 | just a union. */ | |
10530 | if (disr_type == nullptr) | |
10531 | return; | |
10532 | ||
10533 | /* Smash this type to be a structure type. We have to do this | |
10534 | because the type has already been recorded. */ | |
10535 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10536 | ||
10537 | /* Make a union to hold the variants. */ | |
10538 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10539 | struct type *union_type = alloc_type (objfile); | |
10540 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10541 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10542 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
10543 | TYPE_FIELDS (union_type) | |
10544 | = (struct field *) TYPE_ZALLOC (union_type, | |
10545 | (TYPE_NFIELDS (union_type) | |
10546 | * sizeof (struct field))); | |
10547 | ||
10548 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10549 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10550 | ||
10551 | /* Install the discriminant at index 0 in the union. */ | |
10552 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10553 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10554 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10555 | ||
10556 | /* Install the union in the outer struct type. */ | |
10557 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10558 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10559 | TYPE_NFIELDS (type) = 1; | |
10560 | ||
10561 | /* Set the size and offset of the union type. */ | |
10562 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10563 | ||
10564 | /* We need a way to find the correct discriminant given a | |
10565 | variant name. For convenience we build a map here. */ | |
10566 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10567 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10568 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10569 | { | |
10570 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10571 | { | |
10572 | const char *name | |
10573 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10574 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10575 | } | |
10576 | } | |
10577 | ||
10578 | int n_fields = TYPE_NFIELDS (union_type); | |
10579 | struct discriminant_info *disc | |
10580 | = alloc_discriminant_info (union_type, 0, -1); | |
10581 | /* Skip the discriminant here. */ | |
10582 | for (int i = 1; i < n_fields; ++i) | |
10583 | { | |
10584 | /* Find the final word in the name of this variant's type. | |
10585 | That name can be used to look up the correct | |
10586 | discriminant. */ | |
10587 | const char *variant_name | |
10588 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10589 | i))); | |
10590 | ||
10591 | auto iter = discriminant_map.find (variant_name); | |
10592 | if (iter != discriminant_map.end ()) | |
10593 | disc->discriminants[i] = iter->second; | |
10594 | ||
10595 | /* Remove the discriminant field. */ | |
10596 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); | |
10597 | --TYPE_NFIELDS (sub_type); | |
10598 | ++TYPE_FIELDS (sub_type); | |
10599 | TYPE_FIELD_NAME (union_type, i) = variant_name; | |
10600 | TYPE_NAME (sub_type) | |
10601 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10602 | TYPE_NAME (type), variant_name); | |
10603 | } | |
10604 | } | |
10605 | } | |
10606 | ||
10607 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10608 | ||
10609 | static void | |
10610 | rust_union_quirks (struct dwarf2_cu *cu) | |
10611 | { | |
10612 | gdb_assert (cu->language == language_rust); | |
10613 | for (struct type *type : cu->rust_unions) | |
10614 | quirk_rust_enum (type, cu->per_cu->dwarf2_per_objfile->objfile); | |
10615 | } | |
10616 | ||
95554aad TT |
10617 | /* Return the symtab for PER_CU. This works properly regardless of |
10618 | whether we're using the index or psymtabs. */ | |
10619 | ||
43f3e411 DE |
10620 | static struct compunit_symtab * |
10621 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10622 | { |
ed2dc618 | 10623 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10624 | ? per_cu->v.quick->compunit_symtab |
10625 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10626 | } |
10627 | ||
10628 | /* A helper function for computing the list of all symbol tables | |
10629 | included by PER_CU. */ | |
10630 | ||
10631 | static void | |
43f3e411 | 10632 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10633 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10634 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10635 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10636 | { |
10637 | void **slot; | |
10638 | int ix; | |
43f3e411 | 10639 | struct compunit_symtab *cust; |
95554aad TT |
10640 | struct dwarf2_per_cu_data *iter; |
10641 | ||
10642 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10643 | if (*slot != NULL) | |
10644 | { | |
10645 | /* This inclusion and its children have been processed. */ | |
10646 | return; | |
10647 | } | |
10648 | ||
10649 | *slot = per_cu; | |
10650 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10651 | cust = get_compunit_symtab (per_cu); |
10652 | if (cust != NULL) | |
ec94af83 DE |
10653 | { |
10654 | /* If this is a type unit only add its symbol table if we haven't | |
10655 | seen it yet (type unit per_cu's can share symtabs). */ | |
10656 | if (per_cu->is_debug_types) | |
10657 | { | |
43f3e411 | 10658 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10659 | if (*slot == NULL) |
10660 | { | |
43f3e411 DE |
10661 | *slot = cust; |
10662 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10663 | if (cust->user == NULL) | |
10664 | cust->user = immediate_parent; | |
ec94af83 DE |
10665 | } |
10666 | } | |
10667 | else | |
f9125b6c | 10668 | { |
43f3e411 DE |
10669 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10670 | if (cust->user == NULL) | |
10671 | cust->user = immediate_parent; | |
f9125b6c | 10672 | } |
ec94af83 | 10673 | } |
95554aad TT |
10674 | |
10675 | for (ix = 0; | |
796a7ff8 | 10676 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10677 | ++ix) |
ec94af83 DE |
10678 | { |
10679 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10680 | all_type_symtabs, iter, cust); |
ec94af83 | 10681 | } |
95554aad TT |
10682 | } |
10683 | ||
43f3e411 | 10684 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10685 | PER_CU. */ |
10686 | ||
10687 | static void | |
43f3e411 | 10688 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10689 | { |
f4dc4d17 DE |
10690 | gdb_assert (! per_cu->is_debug_types); |
10691 | ||
796a7ff8 | 10692 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10693 | { |
10694 | int ix, len; | |
ec94af83 | 10695 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10696 | struct compunit_symtab *compunit_symtab_iter; |
10697 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10698 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10699 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10700 | |
10701 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10702 | if (cust == NULL) |
95554aad TT |
10703 | return; |
10704 | ||
10705 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10706 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10707 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10708 | NULL, xcalloc, xfree); | |
95554aad TT |
10709 | |
10710 | for (ix = 0; | |
796a7ff8 | 10711 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10712 | ix, per_cu_iter); |
95554aad | 10713 | ++ix) |
ec94af83 DE |
10714 | { |
10715 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10716 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10717 | cust); |
ec94af83 | 10718 | } |
95554aad | 10719 | |
ec94af83 | 10720 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10721 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10722 | cust->includes | |
ed2dc618 | 10723 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10724 | struct compunit_symtab *, len + 1); |
95554aad | 10725 | for (ix = 0; |
43f3e411 DE |
10726 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10727 | compunit_symtab_iter); | |
95554aad | 10728 | ++ix) |
43f3e411 DE |
10729 | cust->includes[ix] = compunit_symtab_iter; |
10730 | cust->includes[len] = NULL; | |
95554aad | 10731 | |
43f3e411 | 10732 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10733 | htab_delete (all_children); |
ec94af83 | 10734 | htab_delete (all_type_symtabs); |
95554aad TT |
10735 | } |
10736 | } | |
10737 | ||
10738 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10739 | read. */ | |
10740 | ||
10741 | static void | |
ed2dc618 | 10742 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
10743 | { |
10744 | int ix; | |
10745 | struct dwarf2_per_cu_data *iter; | |
10746 | ||
10747 | for (ix = 0; | |
10748 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
10749 | ix, iter); | |
10750 | ++ix) | |
f4dc4d17 DE |
10751 | { |
10752 | if (! iter->is_debug_types) | |
43f3e411 | 10753 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10754 | } |
95554aad TT |
10755 | |
10756 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
10757 | } | |
10758 | ||
9cdd5dbd | 10759 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10760 | already been loaded into memory. */ |
10761 | ||
10762 | static void | |
95554aad TT |
10763 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10764 | enum language pretend_language) | |
10b3939b | 10765 | { |
10b3939b | 10766 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10767 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10768 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10769 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10770 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10771 | struct compunit_symtab *cust; |
10b3939b | 10772 | CORE_ADDR baseaddr; |
4359dff1 | 10773 | struct block *static_block; |
3e29f34a | 10774 | CORE_ADDR addr; |
10b3939b DJ |
10775 | |
10776 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10777 | ||
10b3939b | 10778 | buildsym_init (); |
33c7c59d | 10779 | scoped_free_pendings free_pending; |
c89b44cd TT |
10780 | |
10781 | /* Clear the list here in case something was left over. */ | |
10782 | cu->method_list.clear (); | |
10b3939b DJ |
10783 | |
10784 | cu->list_in_scope = &file_symbols; | |
c906108c | 10785 | |
95554aad TT |
10786 | cu->language = pretend_language; |
10787 | cu->language_defn = language_def (cu->language); | |
10788 | ||
c906108c | 10789 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10790 | process_die (cu->dies, cu); |
c906108c | 10791 | |
a766d390 DE |
10792 | /* For now fudge the Go package. */ |
10793 | if (cu->language == language_go) | |
10794 | fixup_go_packaging (cu); | |
10795 | ||
3da10d80 KS |
10796 | /* Now that we have processed all the DIEs in the CU, all the types |
10797 | should be complete, and it should now be safe to compute all of the | |
10798 | physnames. */ | |
10799 | compute_delayed_physnames (cu); | |
3da10d80 | 10800 | |
c9317f21 TT |
10801 | if (cu->language == language_rust) |
10802 | rust_union_quirks (cu); | |
10803 | ||
fae299cd DC |
10804 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10805 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10806 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10807 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10808 | |
3e29f34a MR |
10809 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
10810 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
10811 | |
10812 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10813 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10814 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10815 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10816 | this comp unit. */ | |
10817 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10818 | ||
43f3e411 DE |
10819 | cust = end_symtab_from_static_block (static_block, |
10820 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 10821 | |
43f3e411 | 10822 | if (cust != NULL) |
c906108c | 10823 | { |
df15bd07 | 10824 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10825 | |
8be455d7 JK |
10826 | /* Set symtab language to language from DW_AT_language. If the |
10827 | compilation is from a C file generated by language preprocessors, do | |
10828 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10829 | if (!(cu->language == language_c |
40e3ad0e | 10830 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10831 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10832 | |
10833 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10834 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10835 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10836 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10837 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10838 | |
10839 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10840 | needed, it would be wrong due to missing DW_AT_producer there. | |
10841 | ||
10842 | Still one can confuse GDB by using non-standard GCC compilation | |
10843 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10844 | */ | |
ab260dad | 10845 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10846 | cust->locations_valid = 1; |
e0d00bc7 JK |
10847 | |
10848 | if (gcc_4_minor >= 5) | |
43f3e411 | 10849 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10850 | |
43f3e411 | 10851 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10852 | } |
9291a0cd TT |
10853 | |
10854 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10855 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10856 | else |
10857 | { | |
10858 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10859 | pst->compunit_symtab = cust; |
9291a0cd TT |
10860 | pst->readin = 1; |
10861 | } | |
c906108c | 10862 | |
95554aad TT |
10863 | /* Push it for inclusion processing later. */ |
10864 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
f4dc4d17 | 10865 | } |
45cfd468 | 10866 | |
f4dc4d17 DE |
10867 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10868 | already been loaded into memory. */ | |
10869 | ||
10870 | static void | |
10871 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10872 | enum language pretend_language) | |
10873 | { | |
10874 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10875 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10876 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10877 | struct compunit_symtab *cust; |
0186c6a7 DE |
10878 | struct signatured_type *sig_type; |
10879 | ||
10880 | gdb_assert (per_cu->is_debug_types); | |
10881 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
10882 | |
10883 | buildsym_init (); | |
33c7c59d | 10884 | scoped_free_pendings free_pending; |
c89b44cd TT |
10885 | |
10886 | /* Clear the list here in case something was left over. */ | |
10887 | cu->method_list.clear (); | |
f4dc4d17 DE |
10888 | |
10889 | cu->list_in_scope = &file_symbols; | |
10890 | ||
10891 | cu->language = pretend_language; | |
10892 | cu->language_defn = language_def (cu->language); | |
10893 | ||
10894 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10895 | process_die (cu->dies, cu); | |
10896 | ||
10897 | /* For now fudge the Go package. */ | |
10898 | if (cu->language == language_go) | |
10899 | fixup_go_packaging (cu); | |
10900 | ||
10901 | /* Now that we have processed all the DIEs in the CU, all the types | |
10902 | should be complete, and it should now be safe to compute all of the | |
10903 | physnames. */ | |
10904 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10905 | |
c9317f21 TT |
10906 | if (cu->language == language_rust) |
10907 | rust_union_quirks (cu); | |
10908 | ||
f4dc4d17 DE |
10909 | /* TUs share symbol tables. |
10910 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10911 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10912 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10913 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10914 | { |
43f3e411 DE |
10915 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
10916 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 10917 | |
43f3e411 | 10918 | if (cust != NULL) |
f4dc4d17 DE |
10919 | { |
10920 | /* Set symtab language to language from DW_AT_language. If the | |
10921 | compilation is from a C file generated by language preprocessors, | |
10922 | do not set the language if it was already deduced by | |
10923 | start_subfile. */ | |
43f3e411 DE |
10924 | if (!(cu->language == language_c |
10925 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10926 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10927 | } |
10928 | } | |
10929 | else | |
10930 | { | |
0ab9ce85 | 10931 | augment_type_symtab (); |
43f3e411 | 10932 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10933 | } |
10934 | ||
10935 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10936 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10937 | else |
10938 | { | |
10939 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10940 | pst->compunit_symtab = cust; |
f4dc4d17 | 10941 | pst->readin = 1; |
45cfd468 | 10942 | } |
c906108c SS |
10943 | } |
10944 | ||
95554aad TT |
10945 | /* Process an imported unit DIE. */ |
10946 | ||
10947 | static void | |
10948 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10949 | { | |
10950 | struct attribute *attr; | |
10951 | ||
f4dc4d17 DE |
10952 | /* For now we don't handle imported units in type units. */ |
10953 | if (cu->per_cu->is_debug_types) | |
10954 | { | |
10955 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10956 | " supported in type units [in module %s]"), | |
518817b3 | 10957 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10958 | } |
10959 | ||
95554aad TT |
10960 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10961 | if (attr != NULL) | |
10962 | { | |
9c541725 PA |
10963 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10964 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10965 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10966 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10967 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10968 | |
69d751e3 | 10969 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
10970 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
10971 | load_full_comp_unit (per_cu, cu->language); | |
10972 | ||
796a7ff8 | 10973 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10974 | per_cu); |
10975 | } | |
10976 | } | |
10977 | ||
4c8aa72d PA |
10978 | /* RAII object that represents a process_die scope: i.e., |
10979 | starts/finishes processing a DIE. */ | |
10980 | class process_die_scope | |
adde2bff | 10981 | { |
4c8aa72d PA |
10982 | public: |
10983 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10984 | : m_die (die), m_cu (cu) | |
10985 | { | |
10986 | /* We should only be processing DIEs not already in process. */ | |
10987 | gdb_assert (!m_die->in_process); | |
10988 | m_die->in_process = true; | |
10989 | } | |
8c3cb9fa | 10990 | |
4c8aa72d PA |
10991 | ~process_die_scope () |
10992 | { | |
10993 | m_die->in_process = false; | |
10994 | ||
10995 | /* If we're done processing the DIE for the CU that owns the line | |
10996 | header, we don't need the line header anymore. */ | |
10997 | if (m_cu->line_header_die_owner == m_die) | |
10998 | { | |
10999 | delete m_cu->line_header; | |
11000 | m_cu->line_header = NULL; | |
11001 | m_cu->line_header_die_owner = NULL; | |
11002 | } | |
11003 | } | |
11004 | ||
11005 | private: | |
11006 | die_info *m_die; | |
11007 | dwarf2_cu *m_cu; | |
11008 | }; | |
adde2bff | 11009 | |
c906108c SS |
11010 | /* Process a die and its children. */ |
11011 | ||
11012 | static void | |
e7c27a73 | 11013 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11014 | { |
4c8aa72d | 11015 | process_die_scope scope (die, cu); |
adde2bff | 11016 | |
c906108c SS |
11017 | switch (die->tag) |
11018 | { | |
11019 | case DW_TAG_padding: | |
11020 | break; | |
11021 | case DW_TAG_compile_unit: | |
95554aad | 11022 | case DW_TAG_partial_unit: |
e7c27a73 | 11023 | read_file_scope (die, cu); |
c906108c | 11024 | break; |
348e048f DE |
11025 | case DW_TAG_type_unit: |
11026 | read_type_unit_scope (die, cu); | |
11027 | break; | |
c906108c | 11028 | case DW_TAG_subprogram: |
c906108c | 11029 | case DW_TAG_inlined_subroutine: |
edb3359d | 11030 | read_func_scope (die, cu); |
c906108c SS |
11031 | break; |
11032 | case DW_TAG_lexical_block: | |
14898363 L |
11033 | case DW_TAG_try_block: |
11034 | case DW_TAG_catch_block: | |
e7c27a73 | 11035 | read_lexical_block_scope (die, cu); |
c906108c | 11036 | break; |
216f72a1 | 11037 | case DW_TAG_call_site: |
96408a79 SA |
11038 | case DW_TAG_GNU_call_site: |
11039 | read_call_site_scope (die, cu); | |
11040 | break; | |
c906108c | 11041 | case DW_TAG_class_type: |
680b30c7 | 11042 | case DW_TAG_interface_type: |
c906108c SS |
11043 | case DW_TAG_structure_type: |
11044 | case DW_TAG_union_type: | |
134d01f1 | 11045 | process_structure_scope (die, cu); |
c906108c SS |
11046 | break; |
11047 | case DW_TAG_enumeration_type: | |
134d01f1 | 11048 | process_enumeration_scope (die, cu); |
c906108c | 11049 | break; |
134d01f1 | 11050 | |
f792889a DJ |
11051 | /* These dies have a type, but processing them does not create |
11052 | a symbol or recurse to process the children. Therefore we can | |
11053 | read them on-demand through read_type_die. */ | |
c906108c | 11054 | case DW_TAG_subroutine_type: |
72019c9c | 11055 | case DW_TAG_set_type: |
c906108c | 11056 | case DW_TAG_array_type: |
c906108c | 11057 | case DW_TAG_pointer_type: |
c906108c | 11058 | case DW_TAG_ptr_to_member_type: |
c906108c | 11059 | case DW_TAG_reference_type: |
4297a3f0 | 11060 | case DW_TAG_rvalue_reference_type: |
c906108c | 11061 | case DW_TAG_string_type: |
c906108c | 11062 | break; |
134d01f1 | 11063 | |
c906108c | 11064 | case DW_TAG_base_type: |
a02abb62 | 11065 | case DW_TAG_subrange_type: |
cb249c71 | 11066 | case DW_TAG_typedef: |
134d01f1 DJ |
11067 | /* Add a typedef symbol for the type definition, if it has a |
11068 | DW_AT_name. */ | |
f792889a | 11069 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 11070 | break; |
c906108c | 11071 | case DW_TAG_common_block: |
e7c27a73 | 11072 | read_common_block (die, cu); |
c906108c SS |
11073 | break; |
11074 | case DW_TAG_common_inclusion: | |
11075 | break; | |
d9fa45fe | 11076 | case DW_TAG_namespace: |
4d4ec4e5 | 11077 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 11078 | read_namespace (die, cu); |
d9fa45fe | 11079 | break; |
5d7cb8df | 11080 | case DW_TAG_module: |
4d4ec4e5 | 11081 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
11082 | read_module (die, cu); |
11083 | break; | |
d9fa45fe | 11084 | case DW_TAG_imported_declaration: |
74921315 KS |
11085 | cu->processing_has_namespace_info = 1; |
11086 | if (read_namespace_alias (die, cu)) | |
11087 | break; | |
11088 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 11089 | case DW_TAG_imported_module: |
4d4ec4e5 | 11090 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
11091 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
11092 | || cu->language != language_fortran)) | |
11093 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
11094 | dwarf_tag_name (die->tag)); | |
11095 | read_import_statement (die, cu); | |
d9fa45fe | 11096 | break; |
95554aad TT |
11097 | |
11098 | case DW_TAG_imported_unit: | |
11099 | process_imported_unit_die (die, cu); | |
11100 | break; | |
11101 | ||
71a3c369 TT |
11102 | case DW_TAG_variable: |
11103 | read_variable (die, cu); | |
11104 | break; | |
11105 | ||
c906108c | 11106 | default: |
e7c27a73 | 11107 | new_symbol (die, NULL, cu); |
c906108c SS |
11108 | break; |
11109 | } | |
11110 | } | |
ca69b9e6 DE |
11111 | \f |
11112 | /* DWARF name computation. */ | |
c906108c | 11113 | |
94af9270 KS |
11114 | /* A helper function for dwarf2_compute_name which determines whether DIE |
11115 | needs to have the name of the scope prepended to the name listed in the | |
11116 | die. */ | |
11117 | ||
11118 | static int | |
11119 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
11120 | { | |
1c809c68 TT |
11121 | struct attribute *attr; |
11122 | ||
94af9270 KS |
11123 | switch (die->tag) |
11124 | { | |
11125 | case DW_TAG_namespace: | |
11126 | case DW_TAG_typedef: | |
11127 | case DW_TAG_class_type: | |
11128 | case DW_TAG_interface_type: | |
11129 | case DW_TAG_structure_type: | |
11130 | case DW_TAG_union_type: | |
11131 | case DW_TAG_enumeration_type: | |
11132 | case DW_TAG_enumerator: | |
11133 | case DW_TAG_subprogram: | |
08a76f8a | 11134 | case DW_TAG_inlined_subroutine: |
94af9270 | 11135 | case DW_TAG_member: |
74921315 | 11136 | case DW_TAG_imported_declaration: |
94af9270 KS |
11137 | return 1; |
11138 | ||
11139 | case DW_TAG_variable: | |
c2b0a229 | 11140 | case DW_TAG_constant: |
94af9270 KS |
11141 | /* We only need to prefix "globally" visible variables. These include |
11142 | any variable marked with DW_AT_external or any variable that | |
11143 | lives in a namespace. [Variables in anonymous namespaces | |
11144 | require prefixing, but they are not DW_AT_external.] */ | |
11145 | ||
11146 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
11147 | { | |
11148 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 11149 | |
94af9270 KS |
11150 | return die_needs_namespace (die_specification (die, &spec_cu), |
11151 | spec_cu); | |
11152 | } | |
11153 | ||
1c809c68 | 11154 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
11155 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
11156 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
11157 | return 0; |
11158 | /* A variable in a lexical block of some kind does not need a | |
11159 | namespace, even though in C++ such variables may be external | |
11160 | and have a mangled name. */ | |
11161 | if (die->parent->tag == DW_TAG_lexical_block | |
11162 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
11163 | || die->parent->tag == DW_TAG_catch_block |
11164 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
11165 | return 0; |
11166 | return 1; | |
94af9270 KS |
11167 | |
11168 | default: | |
11169 | return 0; | |
11170 | } | |
11171 | } | |
11172 | ||
73b9be8b KS |
11173 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
11174 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
11175 | defined for the given DIE. */ | |
11176 | ||
11177 | static struct attribute * | |
11178 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
11179 | { | |
11180 | struct attribute *attr; | |
11181 | ||
11182 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
11183 | if (attr == NULL) | |
11184 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
11185 | ||
11186 | return attr; | |
11187 | } | |
11188 | ||
11189 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
11190 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
11191 | defined for the given DIE. */ | |
11192 | ||
11193 | static const char * | |
11194 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
11195 | { | |
11196 | const char *linkage_name; | |
11197 | ||
11198 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
11199 | if (linkage_name == NULL) | |
11200 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
11201 | ||
11202 | return linkage_name; | |
11203 | } | |
11204 | ||
94af9270 | 11205 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 11206 | compute the physname for the object, which include a method's: |
9c37b5ae | 11207 | - formal parameters (C++), |
a766d390 | 11208 | - receiver type (Go), |
a766d390 DE |
11209 | |
11210 | The term "physname" is a bit confusing. | |
11211 | For C++, for example, it is the demangled name. | |
11212 | For Go, for example, it's the mangled name. | |
94af9270 | 11213 | |
af6b7be1 JB |
11214 | For Ada, return the DIE's linkage name rather than the fully qualified |
11215 | name. PHYSNAME is ignored.. | |
11216 | ||
94af9270 KS |
11217 | The result is allocated on the objfile_obstack and canonicalized. */ |
11218 | ||
11219 | static const char * | |
15d034d0 TT |
11220 | dwarf2_compute_name (const char *name, |
11221 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
11222 | int physname) |
11223 | { | |
518817b3 | 11224 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 11225 | |
94af9270 KS |
11226 | if (name == NULL) |
11227 | name = dwarf2_name (die, cu); | |
11228 | ||
2ee7123e DE |
11229 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
11230 | but otherwise compute it by typename_concat inside GDB. | |
11231 | FIXME: Actually this is not really true, or at least not always true. | |
11232 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 11233 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
11234 | will set the demangled name to the result of dwarf2_full_name, and it is |
11235 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
11236 | if (cu->language == language_ada |
11237 | || (cu->language == language_fortran && physname)) | |
11238 | { | |
11239 | /* For Ada unit, we prefer the linkage name over the name, as | |
11240 | the former contains the exported name, which the user expects | |
11241 | to be able to reference. Ideally, we want the user to be able | |
11242 | to reference this entity using either natural or linkage name, | |
11243 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 11244 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 11245 | |
2ee7123e DE |
11246 | if (linkage_name != NULL) |
11247 | return linkage_name; | |
f55ee35c JK |
11248 | } |
11249 | ||
94af9270 KS |
11250 | /* These are the only languages we know how to qualify names in. */ |
11251 | if (name != NULL | |
9c37b5ae | 11252 | && (cu->language == language_cplus |
c44af4eb TT |
11253 | || cu->language == language_fortran || cu->language == language_d |
11254 | || cu->language == language_rust)) | |
94af9270 KS |
11255 | { |
11256 | if (die_needs_namespace (die, cu)) | |
11257 | { | |
0d5cff50 | 11258 | const char *prefix; |
34a68019 | 11259 | const char *canonical_name = NULL; |
94af9270 | 11260 | |
d7e74731 PA |
11261 | string_file buf; |
11262 | ||
94af9270 | 11263 | prefix = determine_prefix (die, cu); |
94af9270 KS |
11264 | if (*prefix != '\0') |
11265 | { | |
f55ee35c JK |
11266 | char *prefixed_name = typename_concat (NULL, prefix, name, |
11267 | physname, cu); | |
9a619af0 | 11268 | |
d7e74731 | 11269 | buf.puts (prefixed_name); |
94af9270 KS |
11270 | xfree (prefixed_name); |
11271 | } | |
11272 | else | |
d7e74731 | 11273 | buf.puts (name); |
94af9270 | 11274 | |
98bfdba5 PA |
11275 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
11276 | as children with DW_TAG_template_type_param or | |
11277 | DW_TAG_value_type_param. If the latter, add them to the name | |
11278 | here. If the name already has template parameters, then | |
11279 | skip this step; some versions of GCC emit both, and | |
11280 | it is more efficient to use the pre-computed name. | |
11281 | ||
11282 | Something to keep in mind about this process: it is very | |
11283 | unlikely, or in some cases downright impossible, to produce | |
11284 | something that will match the mangled name of a function. | |
11285 | If the definition of the function has the same debug info, | |
11286 | we should be able to match up with it anyway. But fallbacks | |
11287 | using the minimal symbol, for instance to find a method | |
11288 | implemented in a stripped copy of libstdc++, will not work. | |
11289 | If we do not have debug info for the definition, we will have to | |
11290 | match them up some other way. | |
11291 | ||
11292 | When we do name matching there is a related problem with function | |
11293 | templates; two instantiated function templates are allowed to | |
11294 | differ only by their return types, which we do not add here. */ | |
11295 | ||
11296 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
11297 | { | |
11298 | struct attribute *attr; | |
11299 | struct die_info *child; | |
11300 | int first = 1; | |
11301 | ||
11302 | die->building_fullname = 1; | |
11303 | ||
11304 | for (child = die->child; child != NULL; child = child->sibling) | |
11305 | { | |
11306 | struct type *type; | |
12df843f | 11307 | LONGEST value; |
d521ce57 | 11308 | const gdb_byte *bytes; |
98bfdba5 PA |
11309 | struct dwarf2_locexpr_baton *baton; |
11310 | struct value *v; | |
11311 | ||
11312 | if (child->tag != DW_TAG_template_type_param | |
11313 | && child->tag != DW_TAG_template_value_param) | |
11314 | continue; | |
11315 | ||
11316 | if (first) | |
11317 | { | |
d7e74731 | 11318 | buf.puts ("<"); |
98bfdba5 PA |
11319 | first = 0; |
11320 | } | |
11321 | else | |
d7e74731 | 11322 | buf.puts (", "); |
98bfdba5 PA |
11323 | |
11324 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
11325 | if (attr == NULL) | |
11326 | { | |
11327 | complaint (&symfile_complaints, | |
11328 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 11329 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
11330 | continue; |
11331 | } | |
11332 | type = die_type (child, cu); | |
11333 | ||
11334 | if (child->tag == DW_TAG_template_type_param) | |
11335 | { | |
d7e74731 | 11336 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
11337 | continue; |
11338 | } | |
11339 | ||
11340 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
11341 | if (attr == NULL) | |
11342 | { | |
11343 | complaint (&symfile_complaints, | |
3e43a32a MS |
11344 | _("template parameter missing " |
11345 | "DW_AT_const_value")); | |
d7e74731 | 11346 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
11347 | continue; |
11348 | } | |
11349 | ||
11350 | dwarf2_const_value_attr (attr, type, name, | |
11351 | &cu->comp_unit_obstack, cu, | |
11352 | &value, &bytes, &baton); | |
11353 | ||
11354 | if (TYPE_NOSIGN (type)) | |
11355 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
11356 | changed, this can use value_print instead. */ | |
d7e74731 | 11357 | c_printchar (value, type, &buf); |
98bfdba5 PA |
11358 | else |
11359 | { | |
11360 | struct value_print_options opts; | |
11361 | ||
11362 | if (baton != NULL) | |
11363 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
11364 | baton->data, | |
11365 | baton->size, | |
11366 | baton->per_cu); | |
11367 | else if (bytes != NULL) | |
11368 | { | |
11369 | v = allocate_value (type); | |
11370 | memcpy (value_contents_writeable (v), bytes, | |
11371 | TYPE_LENGTH (type)); | |
11372 | } | |
11373 | else | |
11374 | v = value_from_longest (type, value); | |
11375 | ||
3e43a32a MS |
11376 | /* Specify decimal so that we do not depend on |
11377 | the radix. */ | |
98bfdba5 PA |
11378 | get_formatted_print_options (&opts, 'd'); |
11379 | opts.raw = 1; | |
d7e74731 | 11380 | value_print (v, &buf, &opts); |
98bfdba5 PA |
11381 | release_value (v); |
11382 | value_free (v); | |
11383 | } | |
11384 | } | |
11385 | ||
11386 | die->building_fullname = 0; | |
11387 | ||
11388 | if (!first) | |
11389 | { | |
11390 | /* Close the argument list, with a space if necessary | |
11391 | (nested templates). */ | |
d7e74731 PA |
11392 | if (!buf.empty () && buf.string ().back () == '>') |
11393 | buf.puts (" >"); | |
98bfdba5 | 11394 | else |
d7e74731 | 11395 | buf.puts (">"); |
98bfdba5 PA |
11396 | } |
11397 | } | |
11398 | ||
9c37b5ae | 11399 | /* For C++ methods, append formal parameter type |
94af9270 | 11400 | information, if PHYSNAME. */ |
6e70227d | 11401 | |
94af9270 | 11402 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 11403 | && cu->language == language_cplus) |
94af9270 KS |
11404 | { |
11405 | struct type *type = read_type_die (die, cu); | |
11406 | ||
d7e74731 | 11407 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 11408 | &type_print_raw_options); |
94af9270 | 11409 | |
9c37b5ae | 11410 | if (cu->language == language_cplus) |
94af9270 | 11411 | { |
60430eff DJ |
11412 | /* Assume that an artificial first parameter is |
11413 | "this", but do not crash if it is not. RealView | |
11414 | marks unnamed (and thus unused) parameters as | |
11415 | artificial; there is no way to differentiate | |
11416 | the two cases. */ | |
94af9270 KS |
11417 | if (TYPE_NFIELDS (type) > 0 |
11418 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 11419 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
11420 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
11421 | 0)))) | |
d7e74731 | 11422 | buf.puts (" const"); |
94af9270 KS |
11423 | } |
11424 | } | |
11425 | ||
d7e74731 | 11426 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
11427 | |
11428 | if (cu->language == language_cplus) | |
34a68019 | 11429 | canonical_name |
322a8516 | 11430 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11431 | &objfile->per_bfd->storage_obstack); |
11432 | ||
11433 | /* If we only computed INTERMEDIATE_NAME, or if | |
11434 | INTERMEDIATE_NAME is already canonical, then we need to | |
11435 | copy it to the appropriate obstack. */ | |
322a8516 | 11436 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
11437 | name = ((const char *) |
11438 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
11439 | intermediate_name.c_str (), |
11440 | intermediate_name.length ())); | |
34a68019 TT |
11441 | else |
11442 | name = canonical_name; | |
94af9270 KS |
11443 | } |
11444 | } | |
11445 | ||
11446 | return name; | |
11447 | } | |
11448 | ||
0114d602 DJ |
11449 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11450 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11451 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11452 | not have a name. NAME may either be from a previous call to |
11453 | dwarf2_name or NULL. | |
11454 | ||
9c37b5ae | 11455 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11456 | |
11457 | static const char * | |
15d034d0 | 11458 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11459 | { |
94af9270 KS |
11460 | return dwarf2_compute_name (name, die, cu, 0); |
11461 | } | |
0114d602 | 11462 | |
94af9270 KS |
11463 | /* Construct a physname for the given DIE in CU. NAME may either be |
11464 | from a previous call to dwarf2_name or NULL. The result will be | |
11465 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11466 | name. | |
0114d602 | 11467 | |
9c37b5ae | 11468 | The output string will be canonicalized (if C++). */ |
0114d602 | 11469 | |
94af9270 | 11470 | static const char * |
15d034d0 | 11471 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11472 | { |
518817b3 | 11473 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11474 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11475 | int need_copy = 1; |
11476 | ||
11477 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11478 | on its own. */ | |
11479 | if (!die_needs_namespace (die, cu)) | |
11480 | return dwarf2_compute_name (name, die, cu, 1); | |
11481 | ||
73b9be8b | 11482 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11483 | |
e98c9e7c TT |
11484 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11485 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11486 | if (cu->language == language_rust && mangled != NULL | |
11487 | && strchr (mangled, '{') != NULL) | |
11488 | mangled = NULL; | |
11489 | ||
900e11f9 JK |
11490 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11491 | has computed. */ | |
791afaa2 | 11492 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11493 | if (mangled != NULL) |
900e11f9 | 11494 | { |
900e11f9 | 11495 | |
a766d390 DE |
11496 | if (cu->language == language_go) |
11497 | { | |
5e2db402 TT |
11498 | /* This is a lie, but we already lie to the caller new_symbol. |
11499 | new_symbol assumes we return the mangled name. | |
a766d390 | 11500 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11501 | } |
11502 | else | |
11503 | { | |
0eb876f5 JB |
11504 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11505 | their return type. It is easier for GDB users to search | |
11506 | for such functions as `name(params)' than `long name(params)'. | |
11507 | In such case the minimal symbol names do not match the full | |
11508 | symbol names but for template functions there is never a need | |
11509 | to look up their definition from their declaration so | |
11510 | the only disadvantage remains the minimal symbol variant | |
11511 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11512 | demangled.reset (gdb_demangle (mangled, |
11513 | (DMGL_PARAMS | DMGL_ANSI | |
11514 | | DMGL_RET_DROP))); | |
a766d390 | 11515 | } |
900e11f9 | 11516 | if (demangled) |
791afaa2 | 11517 | canon = demangled.get (); |
900e11f9 JK |
11518 | else |
11519 | { | |
11520 | canon = mangled; | |
11521 | need_copy = 0; | |
11522 | } | |
11523 | } | |
11524 | ||
11525 | if (canon == NULL || check_physname) | |
11526 | { | |
11527 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11528 | ||
11529 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11530 | { | |
11531 | /* It may not mean a bug in GDB. The compiler could also | |
11532 | compute DW_AT_linkage_name incorrectly. But in such case | |
11533 | GDB would need to be bug-to-bug compatible. */ | |
11534 | ||
11535 | complaint (&symfile_complaints, | |
11536 | _("Computed physname <%s> does not match demangled <%s> " | |
9d8780f0 SM |
11537 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11538 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11539 | objfile_name (objfile)); |
900e11f9 JK |
11540 | |
11541 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11542 | is available here - over computed PHYSNAME. It is safer | |
11543 | against both buggy GDB and buggy compilers. */ | |
11544 | ||
11545 | retval = canon; | |
11546 | } | |
11547 | else | |
11548 | { | |
11549 | retval = physname; | |
11550 | need_copy = 0; | |
11551 | } | |
11552 | } | |
11553 | else | |
11554 | retval = canon; | |
11555 | ||
11556 | if (need_copy) | |
224c3ddb SM |
11557 | retval = ((const char *) |
11558 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11559 | retval, strlen (retval))); | |
900e11f9 | 11560 | |
900e11f9 | 11561 | return retval; |
0114d602 DJ |
11562 | } |
11563 | ||
74921315 KS |
11564 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11565 | a new symbol for it. | |
11566 | ||
11567 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11568 | ||
11569 | static int | |
11570 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11571 | { | |
11572 | struct attribute *attr; | |
11573 | ||
11574 | /* If the die does not have a name, this is not a namespace | |
11575 | alias. */ | |
11576 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11577 | if (attr != NULL) | |
11578 | { | |
11579 | int num; | |
11580 | struct die_info *d = die; | |
11581 | struct dwarf2_cu *imported_cu = cu; | |
11582 | ||
11583 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11584 | keep inspecting DIEs until we hit the underlying import. */ | |
11585 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11586 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11587 | { | |
11588 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11589 | if (attr == NULL) | |
11590 | break; | |
11591 | ||
11592 | d = follow_die_ref (d, attr, &imported_cu); | |
11593 | if (d->tag != DW_TAG_imported_declaration) | |
11594 | break; | |
11595 | } | |
11596 | ||
11597 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11598 | { | |
11599 | complaint (&symfile_complaints, | |
9d8780f0 SM |
11600 | _("DIE at %s has too many recursively imported " |
11601 | "declarations"), sect_offset_str (d->sect_off)); | |
74921315 KS |
11602 | return 0; |
11603 | } | |
11604 | ||
11605 | if (attr != NULL) | |
11606 | { | |
11607 | struct type *type; | |
9c541725 | 11608 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11609 | |
9c541725 | 11610 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11611 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11612 | { | |
11613 | /* This declaration is a global namespace alias. Add | |
11614 | a symbol for it whose type is the aliased namespace. */ | |
11615 | new_symbol (die, type, cu); | |
11616 | return 1; | |
11617 | } | |
11618 | } | |
11619 | } | |
11620 | ||
11621 | return 0; | |
11622 | } | |
11623 | ||
22cee43f PMR |
11624 | /* Return the using directives repository (global or local?) to use in the |
11625 | current context for LANGUAGE. | |
11626 | ||
11627 | For Ada, imported declarations can materialize renamings, which *may* be | |
11628 | global. However it is impossible (for now?) in DWARF to distinguish | |
11629 | "external" imported declarations and "static" ones. As all imported | |
11630 | declarations seem to be static in all other languages, make them all CU-wide | |
11631 | global only in Ada. */ | |
11632 | ||
11633 | static struct using_direct ** | |
11634 | using_directives (enum language language) | |
11635 | { | |
11636 | if (language == language_ada && context_stack_depth == 0) | |
11637 | return &global_using_directives; | |
11638 | else | |
11639 | return &local_using_directives; | |
11640 | } | |
11641 | ||
27aa8d6a SW |
11642 | /* Read the import statement specified by the given die and record it. */ |
11643 | ||
11644 | static void | |
11645 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11646 | { | |
518817b3 | 11647 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11648 | struct attribute *import_attr; |
32019081 | 11649 | struct die_info *imported_die, *child_die; |
de4affc9 | 11650 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11651 | const char *imported_name; |
794684b6 | 11652 | const char *imported_name_prefix; |
13387711 SW |
11653 | const char *canonical_name; |
11654 | const char *import_alias; | |
11655 | const char *imported_declaration = NULL; | |
794684b6 | 11656 | const char *import_prefix; |
eb1e02fd | 11657 | std::vector<const char *> excludes; |
13387711 | 11658 | |
27aa8d6a SW |
11659 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11660 | if (import_attr == NULL) | |
11661 | { | |
11662 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11663 | dwarf_tag_name (die->tag)); | |
11664 | return; | |
11665 | } | |
11666 | ||
de4affc9 CC |
11667 | imported_cu = cu; |
11668 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11669 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11670 | if (imported_name == NULL) |
11671 | { | |
11672 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11673 | ||
11674 | The import in the following code: | |
11675 | namespace A | |
11676 | { | |
11677 | typedef int B; | |
11678 | } | |
11679 | ||
11680 | int main () | |
11681 | { | |
11682 | using A::B; | |
11683 | B b; | |
11684 | return b; | |
11685 | } | |
11686 | ||
11687 | ... | |
11688 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11689 | <52> DW_AT_decl_file : 1 | |
11690 | <53> DW_AT_decl_line : 6 | |
11691 | <54> DW_AT_import : <0x75> | |
11692 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11693 | <59> DW_AT_name : B | |
11694 | <5b> DW_AT_decl_file : 1 | |
11695 | <5c> DW_AT_decl_line : 2 | |
11696 | <5d> DW_AT_type : <0x6e> | |
11697 | ... | |
11698 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11699 | <76> DW_AT_byte_size : 4 | |
11700 | <77> DW_AT_encoding : 5 (signed) | |
11701 | ||
11702 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11703 | This case will be ignored until the gcc bug is fixed. */ | |
11704 | return; | |
11705 | } | |
11706 | ||
82856980 SW |
11707 | /* Figure out the local name after import. */ |
11708 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11709 | |
794684b6 SW |
11710 | /* Figure out where the statement is being imported to. */ |
11711 | import_prefix = determine_prefix (die, cu); | |
11712 | ||
11713 | /* Figure out what the scope of the imported die is and prepend it | |
11714 | to the name of the imported die. */ | |
de4affc9 | 11715 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11716 | |
f55ee35c JK |
11717 | if (imported_die->tag != DW_TAG_namespace |
11718 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11719 | { |
13387711 SW |
11720 | imported_declaration = imported_name; |
11721 | canonical_name = imported_name_prefix; | |
794684b6 | 11722 | } |
13387711 | 11723 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11724 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11725 | imported_name_prefix, |
11726 | (cu->language == language_d ? "." : "::"), | |
11727 | imported_name, (char *) NULL); | |
13387711 SW |
11728 | else |
11729 | canonical_name = imported_name; | |
794684b6 | 11730 | |
32019081 JK |
11731 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11732 | for (child_die = die->child; child_die && child_die->tag; | |
11733 | child_die = sibling_die (child_die)) | |
11734 | { | |
11735 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11736 | represented by an imported module entry with an import attribute | |
11737 | referring to the module and owned entries corresponding to those | |
11738 | entities that are renamed as part of being imported. */ | |
11739 | ||
11740 | if (child_die->tag != DW_TAG_imported_declaration) | |
11741 | { | |
11742 | complaint (&symfile_complaints, | |
11743 | _("child DW_TAG_imported_declaration expected " | |
9d8780f0 SM |
11744 | "- DIE at %s [in module %s]"), |
11745 | sect_offset_str (child_die->sect_off), | |
11746 | objfile_name (objfile)); | |
32019081 JK |
11747 | continue; |
11748 | } | |
11749 | ||
11750 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11751 | if (import_attr == NULL) | |
11752 | { | |
11753 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11754 | dwarf_tag_name (child_die->tag)); | |
11755 | continue; | |
11756 | } | |
11757 | ||
11758 | imported_cu = cu; | |
11759 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11760 | &imported_cu); | |
11761 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11762 | if (imported_name == NULL) | |
11763 | { | |
11764 | complaint (&symfile_complaints, | |
11765 | _("child DW_TAG_imported_declaration has unknown " | |
9d8780f0 SM |
11766 | "imported name - DIE at %s [in module %s]"), |
11767 | sect_offset_str (child_die->sect_off), | |
11768 | objfile_name (objfile)); | |
32019081 JK |
11769 | continue; |
11770 | } | |
11771 | ||
eb1e02fd | 11772 | excludes.push_back (imported_name); |
32019081 JK |
11773 | |
11774 | process_die (child_die, cu); | |
11775 | } | |
11776 | ||
22cee43f PMR |
11777 | add_using_directive (using_directives (cu->language), |
11778 | import_prefix, | |
11779 | canonical_name, | |
11780 | import_alias, | |
11781 | imported_declaration, | |
11782 | excludes, | |
11783 | 0, | |
11784 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11785 | } |
11786 | ||
5230b05a WT |
11787 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11788 | types, but gives them a size of zero. Starting with version 14, | |
11789 | ICC is compatible with GCC. */ | |
11790 | ||
11791 | static int | |
11792 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11793 | { | |
11794 | if (!cu->checked_producer) | |
11795 | check_producer (cu); | |
11796 | ||
11797 | return cu->producer_is_icc_lt_14; | |
11798 | } | |
11799 | ||
1b80a9fa JK |
11800 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11801 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11802 | this, it was first present in GCC release 4.3.0. */ | |
11803 | ||
11804 | static int | |
11805 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11806 | { | |
11807 | if (!cu->checked_producer) | |
11808 | check_producer (cu); | |
11809 | ||
11810 | return cu->producer_is_gcc_lt_4_3; | |
11811 | } | |
11812 | ||
d721ba37 PA |
11813 | static file_and_directory |
11814 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11815 | { |
d721ba37 PA |
11816 | file_and_directory res; |
11817 | ||
9291a0cd TT |
11818 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11819 | is not a source language identifier. */ | |
d721ba37 PA |
11820 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11821 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11822 | |
d721ba37 PA |
11823 | if (res.comp_dir == NULL |
11824 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11825 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11826 | { |
d721ba37 PA |
11827 | res.comp_dir_storage = ldirname (res.name); |
11828 | if (!res.comp_dir_storage.empty ()) | |
11829 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11830 | } |
d721ba37 | 11831 | if (res.comp_dir != NULL) |
9291a0cd TT |
11832 | { |
11833 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11834 | directory, get rid of it. */ | |
d721ba37 | 11835 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11836 | |
d721ba37 PA |
11837 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11838 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11839 | } |
11840 | ||
d721ba37 PA |
11841 | if (res.name == NULL) |
11842 | res.name = "<unknown>"; | |
11843 | ||
11844 | return res; | |
9291a0cd TT |
11845 | } |
11846 | ||
f4dc4d17 DE |
11847 | /* Handle DW_AT_stmt_list for a compilation unit. |
11848 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11849 | COMP_DIR is the compilation directory. LOWPC is passed to |
11850 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11851 | |
11852 | static void | |
11853 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11854 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11855 | { |
518817b3 SM |
11856 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11857 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11858 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11859 | struct attribute *attr; |
527f3840 JK |
11860 | struct line_header line_header_local; |
11861 | hashval_t line_header_local_hash; | |
527f3840 JK |
11862 | void **slot; |
11863 | int decode_mapping; | |
2ab95328 | 11864 | |
f4dc4d17 DE |
11865 | gdb_assert (! cu->per_cu->is_debug_types); |
11866 | ||
2ab95328 | 11867 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11868 | if (attr == NULL) |
11869 | return; | |
11870 | ||
9c541725 | 11871 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11872 | |
11873 | /* The line header hash table is only created if needed (it exists to | |
11874 | prevent redundant reading of the line table for partial_units). | |
11875 | If we're given a partial_unit, we'll need it. If we're given a | |
11876 | compile_unit, then use the line header hash table if it's already | |
11877 | created, but don't create one just yet. */ | |
11878 | ||
11879 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11880 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11881 | { |
527f3840 JK |
11882 | dwarf2_per_objfile->line_header_hash |
11883 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11884 | line_header_eq_voidp, | |
11885 | free_line_header_voidp, | |
11886 | &objfile->objfile_obstack, | |
11887 | hashtab_obstack_allocate, | |
11888 | dummy_obstack_deallocate); | |
11889 | } | |
2ab95328 | 11890 | |
9c541725 | 11891 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11892 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11893 | line_header_local_hash = line_header_hash (&line_header_local); | |
11894 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11895 | { | |
11896 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11897 | &line_header_local, | |
11898 | line_header_local_hash, NO_INSERT); | |
11899 | ||
11900 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11901 | is not present in *SLOT (since if there is something in *SLOT then | |
11902 | it will be for a partial_unit). */ | |
11903 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11904 | { |
527f3840 | 11905 | gdb_assert (*slot != NULL); |
9a3c8263 | 11906 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11907 | return; |
dee91e82 | 11908 | } |
2ab95328 | 11909 | } |
527f3840 JK |
11910 | |
11911 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11912 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11913 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11914 | if (lh == NULL) | |
527f3840 | 11915 | return; |
4c8aa72d PA |
11916 | |
11917 | cu->line_header = lh.release (); | |
11918 | cu->line_header_die_owner = die; | |
527f3840 JK |
11919 | |
11920 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11921 | slot = NULL; | |
11922 | else | |
11923 | { | |
11924 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11925 | &line_header_local, | |
11926 | line_header_local_hash, INSERT); | |
11927 | gdb_assert (slot != NULL); | |
11928 | } | |
11929 | if (slot != NULL && *slot == NULL) | |
11930 | { | |
11931 | /* This newly decoded line number information unit will be owned | |
11932 | by line_header_hash hash table. */ | |
11933 | *slot = cu->line_header; | |
4c8aa72d | 11934 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11935 | } |
11936 | else | |
11937 | { | |
11938 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11939 | may be already used by multiple CUs. Create only temporary decoded | |
11940 | line_header for this CU - it may happen at most once for each line | |
11941 | number information unit. And if we're not using line_header_hash | |
11942 | then this is what we want as well. */ | |
11943 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11944 | } |
11945 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11946 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11947 | decode_mapping); | |
fff8551c | 11948 | |
2ab95328 TT |
11949 | } |
11950 | ||
95554aad | 11951 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11952 | |
c906108c | 11953 | static void |
e7c27a73 | 11954 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11955 | { |
518817b3 SM |
11956 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11957 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11958 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11959 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11960 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11961 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11962 | struct attribute *attr; | |
c906108c | 11963 | struct die_info *child_die; |
e142c38c | 11964 | CORE_ADDR baseaddr; |
6e70227d | 11965 | |
e142c38c | 11966 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11967 | |
fae299cd | 11968 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11969 | |
11970 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11971 | from finish_block. */ | |
2acceee2 | 11972 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11973 | lowpc = highpc; |
3e29f34a | 11974 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11975 | |
d721ba37 | 11976 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11977 | |
95554aad | 11978 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 11979 | |
f4b8a18d KW |
11980 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11981 | standardised yet. As a workaround for the language detection we fall | |
11982 | back to the DW_AT_producer string. */ | |
11983 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11984 | cu->language = language_opencl; | |
11985 | ||
3019eac3 DE |
11986 | /* Similar hack for Go. */ |
11987 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11988 | set_cu_language (DW_LANG_Go, cu); | |
11989 | ||
d721ba37 | 11990 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11991 | |
11992 | /* Decode line number information if present. We do this before | |
11993 | processing child DIEs, so that the line header table is available | |
11994 | for DW_AT_decl_file. */ | |
d721ba37 | 11995 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11996 | |
11997 | /* Process all dies in compilation unit. */ | |
11998 | if (die->child != NULL) | |
11999 | { | |
12000 | child_die = die->child; | |
12001 | while (child_die && child_die->tag) | |
12002 | { | |
12003 | process_die (child_die, cu); | |
12004 | child_die = sibling_die (child_die); | |
12005 | } | |
12006 | } | |
12007 | ||
12008 | /* Decode macro information, if present. Dwarf 2 macro information | |
12009 | refers to information in the line number info statement program | |
12010 | header, so we can only read it if we've read the header | |
12011 | successfully. */ | |
0af92d60 JK |
12012 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
12013 | if (attr == NULL) | |
12014 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
12015 | if (attr && cu->line_header) |
12016 | { | |
12017 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
12018 | complaint (&symfile_complaints, | |
0af92d60 | 12019 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 12020 | |
43f3e411 | 12021 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
12022 | } |
12023 | else | |
12024 | { | |
12025 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
12026 | if (attr && cu->line_header) | |
12027 | { | |
12028 | unsigned int macro_offset = DW_UNSND (attr); | |
12029 | ||
43f3e411 | 12030 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
12031 | } |
12032 | } | |
3019eac3 DE |
12033 | } |
12034 | ||
f4dc4d17 DE |
12035 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
12036 | Create the set of symtabs used by this TU, or if this TU is sharing | |
12037 | symtabs with another TU and the symtabs have already been created | |
12038 | then restore those symtabs in the line header. | |
12039 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
12040 | |
12041 | static void | |
f4dc4d17 | 12042 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 12043 | { |
f4dc4d17 DE |
12044 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
12045 | struct type_unit_group *tu_group; | |
12046 | int first_time; | |
3019eac3 | 12047 | struct attribute *attr; |
9c541725 | 12048 | unsigned int i; |
0186c6a7 | 12049 | struct signatured_type *sig_type; |
3019eac3 | 12050 | |
f4dc4d17 | 12051 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 12052 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 12053 | |
f4dc4d17 | 12054 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 12055 | |
f4dc4d17 | 12056 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 12057 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
12058 | if (sig_type->type_unit_group == NULL) |
12059 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
12060 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
12061 | |
12062 | /* If we've already processed this stmt_list there's no real need to | |
12063 | do it again, we could fake it and just recreate the part we need | |
12064 | (file name,index -> symtab mapping). If data shows this optimization | |
12065 | is useful we can do it then. */ | |
43f3e411 | 12066 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
12067 | |
12068 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
12069 | debug info. */ | |
fff8551c | 12070 | line_header_up lh; |
f4dc4d17 | 12071 | if (attr != NULL) |
3019eac3 | 12072 | { |
9c541725 | 12073 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
12074 | lh = dwarf_decode_line_header (line_offset, cu); |
12075 | } | |
12076 | if (lh == NULL) | |
12077 | { | |
12078 | if (first_time) | |
12079 | dwarf2_start_symtab (cu, "", NULL, 0); | |
12080 | else | |
12081 | { | |
12082 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 12083 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 12084 | } |
f4dc4d17 | 12085 | return; |
3019eac3 DE |
12086 | } |
12087 | ||
4c8aa72d PA |
12088 | cu->line_header = lh.release (); |
12089 | cu->line_header_die_owner = die; | |
3019eac3 | 12090 | |
f4dc4d17 DE |
12091 | if (first_time) |
12092 | { | |
43f3e411 | 12093 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 12094 | |
1fd60fc0 DE |
12095 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
12096 | still initializing it, and our caller (a few levels up) | |
12097 | process_full_type_unit still needs to know if this is the first | |
12098 | time. */ | |
12099 | ||
4c8aa72d PA |
12100 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
12101 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
12102 | cu->line_header->file_names.size ()); | |
3019eac3 | 12103 | |
4c8aa72d | 12104 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 12105 | { |
4c8aa72d | 12106 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 12107 | |
4c8aa72d | 12108 | dwarf2_start_subfile (fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 12109 | |
f4dc4d17 DE |
12110 | if (current_subfile->symtab == NULL) |
12111 | { | |
4c8aa72d PA |
12112 | /* NOTE: start_subfile will recognize when it's been |
12113 | passed a file it has already seen. So we can't | |
12114 | assume there's a simple mapping from | |
12115 | cu->line_header->file_names to subfiles, plus | |
12116 | cu->line_header->file_names may contain dups. */ | |
43f3e411 DE |
12117 | current_subfile->symtab |
12118 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
12119 | } |
12120 | ||
8c43009f PA |
12121 | fe.symtab = current_subfile->symtab; |
12122 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
12123 | } |
12124 | } | |
12125 | else | |
3019eac3 | 12126 | { |
0ab9ce85 | 12127 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 12128 | |
4c8aa72d | 12129 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 12130 | { |
4c8aa72d | 12131 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 12132 | |
4c8aa72d | 12133 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 12134 | } |
3019eac3 DE |
12135 | } |
12136 | ||
f4dc4d17 DE |
12137 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
12138 | so they don't have a "real" (so to speak) symtab anyway. | |
12139 | There is later code that will assign the main symtab to all symbols | |
12140 | that don't have one. We need to handle the case of a symbol with a | |
12141 | missing symtab (DW_AT_decl_file) anyway. */ | |
12142 | } | |
3019eac3 | 12143 | |
f4dc4d17 DE |
12144 | /* Process DW_TAG_type_unit. |
12145 | For TUs we want to skip the first top level sibling if it's not the | |
12146 | actual type being defined by this TU. In this case the first top | |
12147 | level sibling is there to provide context only. */ | |
3019eac3 | 12148 | |
f4dc4d17 DE |
12149 | static void |
12150 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12151 | { | |
12152 | struct die_info *child_die; | |
3019eac3 | 12153 | |
f4dc4d17 DE |
12154 | prepare_one_comp_unit (cu, die, language_minimal); |
12155 | ||
12156 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
12157 | We do this before processing child DIEs, so that the line header table | |
12158 | is available for DW_AT_decl_file. */ | |
12159 | setup_type_unit_groups (die, cu); | |
12160 | ||
12161 | if (die->child != NULL) | |
12162 | { | |
12163 | child_die = die->child; | |
12164 | while (child_die && child_die->tag) | |
12165 | { | |
12166 | process_die (child_die, cu); | |
12167 | child_die = sibling_die (child_die); | |
12168 | } | |
12169 | } | |
3019eac3 DE |
12170 | } |
12171 | \f | |
80626a55 DE |
12172 | /* DWO/DWP files. |
12173 | ||
12174 | http://gcc.gnu.org/wiki/DebugFission | |
12175 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
12176 | ||
12177 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
12178 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
12179 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
12180 | |
12181 | static hashval_t | |
12182 | hash_dwo_file (const void *item) | |
12183 | { | |
9a3c8263 | 12184 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 12185 | hashval_t hash; |
3019eac3 | 12186 | |
a2ce51a0 DE |
12187 | hash = htab_hash_string (dwo_file->dwo_name); |
12188 | if (dwo_file->comp_dir != NULL) | |
12189 | hash += htab_hash_string (dwo_file->comp_dir); | |
12190 | return hash; | |
3019eac3 DE |
12191 | } |
12192 | ||
12193 | static int | |
12194 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
12195 | { | |
9a3c8263 SM |
12196 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
12197 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 12198 | |
a2ce51a0 DE |
12199 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
12200 | return 0; | |
12201 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
12202 | return lhs->comp_dir == rhs->comp_dir; | |
12203 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
12204 | } |
12205 | ||
12206 | /* Allocate a hash table for DWO files. */ | |
12207 | ||
12208 | static htab_t | |
ed2dc618 | 12209 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 12210 | { |
3019eac3 DE |
12211 | return htab_create_alloc_ex (41, |
12212 | hash_dwo_file, | |
12213 | eq_dwo_file, | |
12214 | NULL, | |
12215 | &objfile->objfile_obstack, | |
12216 | hashtab_obstack_allocate, | |
12217 | dummy_obstack_deallocate); | |
12218 | } | |
12219 | ||
80626a55 DE |
12220 | /* Lookup DWO file DWO_NAME. */ |
12221 | ||
12222 | static void ** | |
ed2dc618 SM |
12223 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12224 | const char *dwo_name, | |
12225 | const char *comp_dir) | |
80626a55 DE |
12226 | { |
12227 | struct dwo_file find_entry; | |
12228 | void **slot; | |
12229 | ||
12230 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
12231 | dwarf2_per_objfile->dwo_files |
12232 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
12233 | |
12234 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
12235 | find_entry.dwo_name = dwo_name; |
12236 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
12237 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
12238 | ||
12239 | return slot; | |
12240 | } | |
12241 | ||
3019eac3 DE |
12242 | static hashval_t |
12243 | hash_dwo_unit (const void *item) | |
12244 | { | |
9a3c8263 | 12245 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
12246 | |
12247 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
12248 | return dwo_unit->signature; | |
12249 | } | |
12250 | ||
12251 | static int | |
12252 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
12253 | { | |
9a3c8263 SM |
12254 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
12255 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
12256 | |
12257 | /* The signature is assumed to be unique within the DWO file. | |
12258 | So while object file CU dwo_id's always have the value zero, | |
12259 | that's OK, assuming each object file DWO file has only one CU, | |
12260 | and that's the rule for now. */ | |
12261 | return lhs->signature == rhs->signature; | |
12262 | } | |
12263 | ||
12264 | /* Allocate a hash table for DWO CUs,TUs. | |
12265 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
12266 | ||
12267 | static htab_t | |
12268 | allocate_dwo_unit_table (struct objfile *objfile) | |
12269 | { | |
12270 | /* Start out with a pretty small number. | |
12271 | Generally DWO files contain only one CU and maybe some TUs. */ | |
12272 | return htab_create_alloc_ex (3, | |
12273 | hash_dwo_unit, | |
12274 | eq_dwo_unit, | |
12275 | NULL, | |
12276 | &objfile->objfile_obstack, | |
12277 | hashtab_obstack_allocate, | |
12278 | dummy_obstack_deallocate); | |
12279 | } | |
12280 | ||
80626a55 | 12281 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 12282 | |
19c3d4c9 | 12283 | struct create_dwo_cu_data |
3019eac3 DE |
12284 | { |
12285 | struct dwo_file *dwo_file; | |
19c3d4c9 | 12286 | struct dwo_unit dwo_unit; |
3019eac3 DE |
12287 | }; |
12288 | ||
19c3d4c9 | 12289 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
12290 | |
12291 | static void | |
19c3d4c9 DE |
12292 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
12293 | const gdb_byte *info_ptr, | |
12294 | struct die_info *comp_unit_die, | |
12295 | int has_children, | |
12296 | void *datap) | |
3019eac3 DE |
12297 | { |
12298 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 12299 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 12300 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 12301 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 12302 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 12303 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 12304 | struct attribute *attr; |
3019eac3 DE |
12305 | |
12306 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
12307 | if (attr == NULL) | |
12308 | { | |
19c3d4c9 | 12309 | complaint (&symfile_complaints, |
9d8780f0 | 12310 | _("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 12311 | " its dwo_id [in module %s]"), |
9d8780f0 | 12312 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
12313 | return; |
12314 | } | |
12315 | ||
3019eac3 DE |
12316 | dwo_unit->dwo_file = dwo_file; |
12317 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 12318 | dwo_unit->section = section; |
9c541725 | 12319 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
12320 | dwo_unit->length = cu->per_cu->length; |
12321 | ||
b4f54984 | 12322 | if (dwarf_read_debug) |
9d8780f0 SM |
12323 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
12324 | sect_offset_str (sect_off), | |
9c541725 | 12325 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
12326 | } |
12327 | ||
33c5cd75 | 12328 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 12329 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 12330 | |
33c5cd75 | 12331 | static void |
ed2dc618 SM |
12332 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12333 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 12334 | htab_t &cus_htab) |
3019eac3 DE |
12335 | { |
12336 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 12337 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 12338 | |
33c5cd75 DB |
12339 | dwarf2_read_section (objfile, §ion); |
12340 | info_ptr = section.buffer; | |
3019eac3 DE |
12341 | |
12342 | if (info_ptr == NULL) | |
33c5cd75 | 12343 | return; |
3019eac3 | 12344 | |
b4f54984 | 12345 | if (dwarf_read_debug) |
19c3d4c9 DE |
12346 | { |
12347 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
12348 | get_section_name (§ion), |
12349 | get_section_file_name (§ion)); | |
19c3d4c9 | 12350 | } |
3019eac3 | 12351 | |
33c5cd75 | 12352 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
12353 | while (info_ptr < end_ptr) |
12354 | { | |
12355 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
12356 | struct create_dwo_cu_data create_dwo_cu_data; |
12357 | struct dwo_unit *dwo_unit; | |
12358 | void **slot; | |
12359 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 12360 | |
19c3d4c9 DE |
12361 | memset (&create_dwo_cu_data.dwo_unit, 0, |
12362 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 12363 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 12364 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 12365 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
12366 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
12367 | per_cu.section = §ion; | |
c5ed0576 | 12368 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
12369 | |
12370 | init_cutu_and_read_dies_no_follow ( | |
12371 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
12372 | info_ptr += per_cu.length; | |
12373 | ||
12374 | // If the unit could not be parsed, skip it. | |
12375 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
12376 | continue; | |
3019eac3 | 12377 | |
33c5cd75 DB |
12378 | if (cus_htab == NULL) |
12379 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 12380 | |
33c5cd75 DB |
12381 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
12382 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
12383 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
12384 | gdb_assert (slot != NULL); | |
12385 | if (*slot != NULL) | |
19c3d4c9 | 12386 | { |
33c5cd75 DB |
12387 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
12388 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 12389 | |
33c5cd75 | 12390 | complaint (&symfile_complaints, |
9d8780f0 SM |
12391 | _("debug cu entry at offset %s is duplicate to" |
12392 | " the entry at offset %s, signature %s"), | |
12393 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 12394 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 12395 | } |
33c5cd75 | 12396 | *slot = (void *)dwo_unit; |
3019eac3 | 12397 | } |
3019eac3 DE |
12398 | } |
12399 | ||
80626a55 DE |
12400 | /* DWP file .debug_{cu,tu}_index section format: |
12401 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
12402 | ||
d2415c6c DE |
12403 | DWP Version 1: |
12404 | ||
80626a55 DE |
12405 | Both index sections have the same format, and serve to map a 64-bit |
12406 | signature to a set of section numbers. Each section begins with a header, | |
12407 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
12408 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
12409 | aligned at 8-byte boundaries in the file. | |
12410 | ||
d2415c6c DE |
12411 | The index section header consists of: |
12412 | ||
12413 | V, 32 bit version number | |
12414 | -, 32 bits unused | |
12415 | N, 32 bit number of compilation units or type units in the index | |
12416 | M, 32 bit number of slots in the hash table | |
80626a55 | 12417 | |
d2415c6c | 12418 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12419 | |
d2415c6c DE |
12420 | The hash table begins at offset 16 in the section, and consists of an array |
12421 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12422 | order of the application binary). Unused slots in the hash table are 0. | |
12423 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12424 | |
d2415c6c DE |
12425 | The parallel table begins immediately after the hash table |
12426 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12427 | array of 32-bit indexes (using the byte order of the application binary), | |
12428 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12429 | table contains a 32-bit index into the pool of section numbers. For unused | |
12430 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12431 | |
73869dc2 DE |
12432 | The pool of section numbers begins immediately following the hash table |
12433 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12434 | section numbers consists of an array of 32-bit words (using the byte order | |
12435 | of the application binary). Each item in the array is indexed starting | |
12436 | from 0. The hash table entry provides the index of the first section | |
12437 | number in the set. Additional section numbers in the set follow, and the | |
12438 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12439 | ||
12440 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12441 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12442 | be the second entry. Other members of the set may follow in any order. | |
12443 | ||
12444 | --- | |
12445 | ||
12446 | DWP Version 2: | |
12447 | ||
12448 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12449 | and the entries in the index tables are now offsets into these sections. | |
12450 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12451 | section. | |
12452 | ||
12453 | Index Section Contents: | |
12454 | Header | |
12455 | Hash Table of Signatures dwp_hash_table.hash_table | |
12456 | Parallel Table of Indices dwp_hash_table.unit_table | |
12457 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12458 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12459 | ||
12460 | The index section header consists of: | |
12461 | ||
12462 | V, 32 bit version number | |
12463 | L, 32 bit number of columns in the table of section offsets | |
12464 | N, 32 bit number of compilation units or type units in the index | |
12465 | M, 32 bit number of slots in the hash table | |
12466 | ||
12467 | Numbers are recorded using the byte order of the application binary. | |
12468 | ||
12469 | The hash table has the same format as version 1. | |
12470 | The parallel table of indices has the same format as version 1, | |
12471 | except that the entries are origin-1 indices into the table of sections | |
12472 | offsets and the table of section sizes. | |
12473 | ||
12474 | The table of offsets begins immediately following the parallel table | |
12475 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12476 | a two-dimensional array of 32-bit words (using the byte order of the | |
12477 | application binary), with L columns and N+1 rows, in row-major order. | |
12478 | Each row in the array is indexed starting from 0. The first row provides | |
12479 | a key to the remaining rows: each column in this row provides an identifier | |
12480 | for a debug section, and the offsets in the same column of subsequent rows | |
12481 | refer to that section. The section identifiers are: | |
12482 | ||
12483 | DW_SECT_INFO 1 .debug_info.dwo | |
12484 | DW_SECT_TYPES 2 .debug_types.dwo | |
12485 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12486 | DW_SECT_LINE 4 .debug_line.dwo | |
12487 | DW_SECT_LOC 5 .debug_loc.dwo | |
12488 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12489 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12490 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12491 | ||
12492 | The offsets provided by the CU and TU index sections are the base offsets | |
12493 | for the contributions made by each CU or TU to the corresponding section | |
12494 | in the package file. Each CU and TU header contains an abbrev_offset | |
12495 | field, used to find the abbreviations table for that CU or TU within the | |
12496 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12497 | be interpreted as relative to the base offset given in the index section. | |
12498 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12499 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12500 | and offsets into other debug sections obtained from DWARF attributes should | |
12501 | also be interpreted as relative to the corresponding base offset. | |
12502 | ||
12503 | The table of sizes begins immediately following the table of offsets. | |
12504 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12505 | with L columns and N rows, in row-major order. Each row in the array is | |
12506 | indexed starting from 1 (row 0 is shared by the two tables). | |
12507 | ||
12508 | --- | |
12509 | ||
12510 | Hash table lookup is handled the same in version 1 and 2: | |
12511 | ||
12512 | We assume that N and M will not exceed 2^32 - 1. | |
12513 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12514 | ||
d2415c6c DE |
12515 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12516 | in the hash table is located as follows: | |
80626a55 | 12517 | |
d2415c6c DE |
12518 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12519 | the low-order k bits all set to 1. | |
80626a55 | 12520 | |
d2415c6c | 12521 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12522 | |
d2415c6c DE |
12523 | 3) If the hash table entry at index H matches the signature, use that |
12524 | entry. If the hash table entry at index H is unused (all zeroes), | |
12525 | terminate the search: the signature is not present in the table. | |
80626a55 | 12526 | |
d2415c6c | 12527 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12528 | |
d2415c6c | 12529 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12530 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12531 | |
12532 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12533 | .debug_{info,types}.dwo in DWP_FILE. | |
12534 | Returns NULL if there isn't one. | |
12535 | Note: This function processes DWP files only, not DWO files. */ | |
12536 | ||
12537 | static struct dwp_hash_table * | |
ed2dc618 SM |
12538 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12539 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12540 | { |
12541 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12542 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 12543 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12544 | struct dwarf2_section_info *index; |
73869dc2 | 12545 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12546 | struct dwp_hash_table *htab; |
12547 | ||
12548 | if (is_debug_types) | |
12549 | index = &dwp_file->sections.tu_index; | |
12550 | else | |
12551 | index = &dwp_file->sections.cu_index; | |
12552 | ||
12553 | if (dwarf2_section_empty_p (index)) | |
12554 | return NULL; | |
12555 | dwarf2_read_section (objfile, index); | |
12556 | ||
12557 | index_ptr = index->buffer; | |
12558 | index_end = index_ptr + index->size; | |
12559 | ||
12560 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12561 | index_ptr += 4; |
12562 | if (version == 2) | |
12563 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12564 | else | |
12565 | nr_columns = 0; | |
12566 | index_ptr += 4; | |
80626a55 DE |
12567 | nr_units = read_4_bytes (dbfd, index_ptr); |
12568 | index_ptr += 4; | |
12569 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12570 | index_ptr += 4; | |
12571 | ||
73869dc2 | 12572 | if (version != 1 && version != 2) |
80626a55 | 12573 | { |
21aa081e | 12574 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12575 | " [in module %s]"), |
21aa081e | 12576 | pulongest (version), dwp_file->name); |
80626a55 DE |
12577 | } |
12578 | if (nr_slots != (nr_slots & -nr_slots)) | |
12579 | { | |
21aa081e | 12580 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12581 | " is not power of 2 [in module %s]"), |
21aa081e | 12582 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12583 | } |
12584 | ||
12585 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12586 | htab->version = version; |
12587 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12588 | htab->nr_units = nr_units; |
12589 | htab->nr_slots = nr_slots; | |
12590 | htab->hash_table = index_ptr; | |
12591 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12592 | |
12593 | /* Exit early if the table is empty. */ | |
12594 | if (nr_slots == 0 || nr_units == 0 | |
12595 | || (version == 2 && nr_columns == 0)) | |
12596 | { | |
12597 | /* All must be zero. */ | |
12598 | if (nr_slots != 0 || nr_units != 0 | |
12599 | || (version == 2 && nr_columns != 0)) | |
12600 | { | |
12601 | complaint (&symfile_complaints, | |
12602 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
12603 | " all zero [in modules %s]"), | |
12604 | dwp_file->name); | |
12605 | } | |
12606 | return htab; | |
12607 | } | |
12608 | ||
12609 | if (version == 1) | |
12610 | { | |
12611 | htab->section_pool.v1.indices = | |
12612 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12613 | /* It's harder to decide whether the section is too small in v1. | |
12614 | V1 is deprecated anyway so we punt. */ | |
12615 | } | |
12616 | else | |
12617 | { | |
12618 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12619 | int *ids = htab->section_pool.v2.section_ids; | |
12620 | /* Reverse map for error checking. */ | |
12621 | int ids_seen[DW_SECT_MAX + 1]; | |
12622 | int i; | |
12623 | ||
12624 | if (nr_columns < 2) | |
12625 | { | |
12626 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12627 | " in section table [in module %s]"), | |
12628 | dwp_file->name); | |
12629 | } | |
12630 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12631 | { | |
12632 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12633 | " in section table [in module %s]"), | |
12634 | dwp_file->name); | |
12635 | } | |
12636 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12637 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12638 | for (i = 0; i < nr_columns; ++i) | |
12639 | { | |
12640 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12641 | ||
12642 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12643 | { | |
12644 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12645 | " in section table [in module %s]"), | |
12646 | id, dwp_file->name); | |
12647 | } | |
12648 | if (ids_seen[id] != -1) | |
12649 | { | |
12650 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12651 | " id %d in section table [in module %s]"), | |
12652 | id, dwp_file->name); | |
12653 | } | |
12654 | ids_seen[id] = i; | |
12655 | ids[i] = id; | |
12656 | } | |
12657 | /* Must have exactly one info or types section. */ | |
12658 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12659 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12660 | != 1) | |
12661 | { | |
12662 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12663 | " DWO info/types section [in module %s]"), | |
12664 | dwp_file->name); | |
12665 | } | |
12666 | /* Must have an abbrev section. */ | |
12667 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12668 | { | |
12669 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12670 | " section [in module %s]"), | |
12671 | dwp_file->name); | |
12672 | } | |
12673 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12674 | htab->section_pool.v2.sizes = | |
12675 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12676 | * nr_units * nr_columns); | |
12677 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12678 | * nr_units * nr_columns)) | |
12679 | > index_end) | |
12680 | { | |
12681 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12682 | " [in module %s]"), | |
12683 | dwp_file->name); | |
12684 | } | |
12685 | } | |
80626a55 DE |
12686 | |
12687 | return htab; | |
12688 | } | |
12689 | ||
12690 | /* Update SECTIONS with the data from SECTP. | |
12691 | ||
12692 | This function is like the other "locate" section routines that are | |
12693 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12694 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12695 | |
12696 | The result is non-zero for success, or zero if an error was found. */ | |
12697 | ||
12698 | static int | |
73869dc2 DE |
12699 | locate_v1_virtual_dwo_sections (asection *sectp, |
12700 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12701 | { |
12702 | const struct dwop_section_names *names = &dwop_section_names; | |
12703 | ||
12704 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12705 | { | |
12706 | /* There can be only one. */ | |
049412e3 | 12707 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12708 | return 0; |
049412e3 | 12709 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12710 | sections->abbrev.size = bfd_get_section_size (sectp); |
12711 | } | |
12712 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12713 | || section_is_p (sectp->name, &names->types_dwo)) | |
12714 | { | |
12715 | /* There can be only one. */ | |
049412e3 | 12716 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12717 | return 0; |
049412e3 | 12718 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12719 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12720 | } | |
12721 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12722 | { | |
12723 | /* There can be only one. */ | |
049412e3 | 12724 | if (sections->line.s.section != NULL) |
80626a55 | 12725 | return 0; |
049412e3 | 12726 | sections->line.s.section = sectp; |
80626a55 DE |
12727 | sections->line.size = bfd_get_section_size (sectp); |
12728 | } | |
12729 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12730 | { | |
12731 | /* There can be only one. */ | |
049412e3 | 12732 | if (sections->loc.s.section != NULL) |
80626a55 | 12733 | return 0; |
049412e3 | 12734 | sections->loc.s.section = sectp; |
80626a55 DE |
12735 | sections->loc.size = bfd_get_section_size (sectp); |
12736 | } | |
12737 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12738 | { | |
12739 | /* There can be only one. */ | |
049412e3 | 12740 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12741 | return 0; |
049412e3 | 12742 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12743 | sections->macinfo.size = bfd_get_section_size (sectp); |
12744 | } | |
12745 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12746 | { | |
12747 | /* There can be only one. */ | |
049412e3 | 12748 | if (sections->macro.s.section != NULL) |
80626a55 | 12749 | return 0; |
049412e3 | 12750 | sections->macro.s.section = sectp; |
80626a55 DE |
12751 | sections->macro.size = bfd_get_section_size (sectp); |
12752 | } | |
12753 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12754 | { | |
12755 | /* There can be only one. */ | |
049412e3 | 12756 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12757 | return 0; |
049412e3 | 12758 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12759 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12760 | } | |
12761 | else | |
12762 | { | |
12763 | /* No other kind of section is valid. */ | |
12764 | return 0; | |
12765 | } | |
12766 | ||
12767 | return 1; | |
12768 | } | |
12769 | ||
73869dc2 DE |
12770 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12771 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12772 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12773 | This is for DWP version 1 files. */ | |
80626a55 DE |
12774 | |
12775 | static struct dwo_unit * | |
ed2dc618 SM |
12776 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12777 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12778 | uint32_t unit_index, |
12779 | const char *comp_dir, | |
12780 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12781 | { |
12782 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12783 | const struct dwp_hash_table *dwp_htab = |
12784 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
12785 | bfd *dbfd = dwp_file->dbfd; |
12786 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12787 | struct dwo_file *dwo_file; | |
12788 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12789 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12790 | void **dwo_file_slot; |
80626a55 DE |
12791 | int i; |
12792 | ||
73869dc2 DE |
12793 | gdb_assert (dwp_file->version == 1); |
12794 | ||
b4f54984 | 12795 | if (dwarf_read_debug) |
80626a55 | 12796 | { |
73869dc2 | 12797 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12798 | kind, |
73869dc2 | 12799 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12800 | dwp_file->name); |
12801 | } | |
12802 | ||
19ac8c2e | 12803 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12804 | Put a limit on the number of sections we look for so that bad data |
12805 | doesn't cause us to loop forever. */ | |
12806 | ||
73869dc2 | 12807 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12808 | (1 /* .debug_info or .debug_types */ \ |
12809 | + 1 /* .debug_abbrev */ \ | |
12810 | + 1 /* .debug_line */ \ | |
12811 | + 1 /* .debug_loc */ \ | |
12812 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12813 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12814 | + 1 /* trailing zero */) |
12815 | ||
12816 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12817 | |
73869dc2 | 12818 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12819 | { |
12820 | asection *sectp; | |
12821 | uint32_t section_nr = | |
12822 | read_4_bytes (dbfd, | |
73869dc2 DE |
12823 | dwp_htab->section_pool.v1.indices |
12824 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12825 | |
12826 | if (section_nr == 0) | |
12827 | break; | |
12828 | if (section_nr >= dwp_file->num_sections) | |
12829 | { | |
12830 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12831 | " [in module %s]"), | |
12832 | dwp_file->name); | |
12833 | } | |
12834 | ||
12835 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12836 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12837 | { |
12838 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12839 | " [in module %s]"), | |
12840 | dwp_file->name); | |
12841 | } | |
12842 | } | |
12843 | ||
12844 | if (i < 2 | |
a32a8923 DE |
12845 | || dwarf2_section_empty_p (§ions.info_or_types) |
12846 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12847 | { |
12848 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12849 | " [in module %s]"), | |
12850 | dwp_file->name); | |
12851 | } | |
73869dc2 | 12852 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12853 | { |
12854 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12855 | " [in module %s]"), | |
12856 | dwp_file->name); | |
12857 | } | |
12858 | ||
12859 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12860 | have dwo_unit "live" in that. At least for now. | |
12861 | ||
12862 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12863 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12864 | file, we can combine them back into a virtual DWO file to save space |
12865 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12866 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12867 | ||
791afaa2 TT |
12868 | std::string virtual_dwo_name = |
12869 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12870 | get_section_id (§ions.abbrev), | |
12871 | get_section_id (§ions.line), | |
12872 | get_section_id (§ions.loc), | |
12873 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12874 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12875 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12876 | virtual_dwo_name.c_str (), | |
12877 | comp_dir); | |
80626a55 DE |
12878 | /* Create one if necessary. */ |
12879 | if (*dwo_file_slot == NULL) | |
12880 | { | |
b4f54984 | 12881 | if (dwarf_read_debug) |
80626a55 DE |
12882 | { |
12883 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12884 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12885 | } |
12886 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12887 | dwo_file->dwo_name |
12888 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12889 | virtual_dwo_name.c_str (), |
12890 | virtual_dwo_name.size ()); | |
0ac5b59e | 12891 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12892 | dwo_file->sections.abbrev = sections.abbrev; |
12893 | dwo_file->sections.line = sections.line; | |
12894 | dwo_file->sections.loc = sections.loc; | |
12895 | dwo_file->sections.macinfo = sections.macinfo; | |
12896 | dwo_file->sections.macro = sections.macro; | |
12897 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12898 | /* The "str" section is global to the entire DWP file. */ | |
12899 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12900 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12901 | there's no need to record it in dwo_file. |
12902 | Also, we can't simply record type sections in dwo_file because | |
12903 | we record a pointer into the vector in dwo_unit. As we collect more | |
12904 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12905 | for it, invalidating all copies of pointers into the previous |
12906 | contents. */ | |
80626a55 DE |
12907 | *dwo_file_slot = dwo_file; |
12908 | } | |
12909 | else | |
12910 | { | |
b4f54984 | 12911 | if (dwarf_read_debug) |
80626a55 DE |
12912 | { |
12913 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12914 | virtual_dwo_name.c_str ()); |
80626a55 | 12915 | } |
9a3c8263 | 12916 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12917 | } |
80626a55 DE |
12918 | |
12919 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12920 | dwo_unit->dwo_file = dwo_file; | |
12921 | dwo_unit->signature = signature; | |
8d749320 SM |
12922 | dwo_unit->section = |
12923 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12924 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12925 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12926 | |
12927 | return dwo_unit; | |
12928 | } | |
12929 | ||
73869dc2 DE |
12930 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12931 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12932 | piece within that section used by a TU/CU, return a virtual section | |
12933 | of just that piece. */ | |
12934 | ||
12935 | static struct dwarf2_section_info | |
ed2dc618 SM |
12936 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12937 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12938 | bfd_size_type offset, bfd_size_type size) |
12939 | { | |
12940 | struct dwarf2_section_info result; | |
12941 | asection *sectp; | |
12942 | ||
12943 | gdb_assert (section != NULL); | |
12944 | gdb_assert (!section->is_virtual); | |
12945 | ||
12946 | memset (&result, 0, sizeof (result)); | |
12947 | result.s.containing_section = section; | |
12948 | result.is_virtual = 1; | |
12949 | ||
12950 | if (size == 0) | |
12951 | return result; | |
12952 | ||
12953 | sectp = get_section_bfd_section (section); | |
12954 | ||
12955 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12956 | bounds of the real section. This is a pretty-rare event, so just | |
12957 | flag an error (easier) instead of a warning and trying to cope. */ | |
12958 | if (sectp == NULL | |
12959 | || offset + size > bfd_get_section_size (sectp)) | |
12960 | { | |
73869dc2 DE |
12961 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12962 | " in section %s [in module %s]"), | |
12963 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12964 | objfile_name (dwarf2_per_objfile->objfile)); | |
12965 | } | |
12966 | ||
12967 | result.virtual_offset = offset; | |
12968 | result.size = size; | |
12969 | return result; | |
12970 | } | |
12971 | ||
12972 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12973 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12974 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12975 | This is for DWP version 2 files. */ | |
12976 | ||
12977 | static struct dwo_unit * | |
ed2dc618 SM |
12978 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12979 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12980 | uint32_t unit_index, |
12981 | const char *comp_dir, | |
12982 | ULONGEST signature, int is_debug_types) | |
12983 | { | |
12984 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12985 | const struct dwp_hash_table *dwp_htab = | |
12986 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12987 | bfd *dbfd = dwp_file->dbfd; | |
12988 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12989 | struct dwo_file *dwo_file; | |
12990 | struct dwo_unit *dwo_unit; | |
12991 | struct virtual_v2_dwo_sections sections; | |
12992 | void **dwo_file_slot; | |
73869dc2 DE |
12993 | int i; |
12994 | ||
12995 | gdb_assert (dwp_file->version == 2); | |
12996 | ||
b4f54984 | 12997 | if (dwarf_read_debug) |
73869dc2 DE |
12998 | { |
12999 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
13000 | kind, | |
13001 | pulongest (unit_index), hex_string (signature), | |
13002 | dwp_file->name); | |
13003 | } | |
13004 | ||
13005 | /* Fetch the section offsets of this DWO unit. */ | |
13006 | ||
13007 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
13008 | |
13009 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
13010 | { | |
13011 | uint32_t offset = read_4_bytes (dbfd, | |
13012 | dwp_htab->section_pool.v2.offsets | |
13013 | + (((unit_index - 1) * dwp_htab->nr_columns | |
13014 | + i) | |
13015 | * sizeof (uint32_t))); | |
13016 | uint32_t size = read_4_bytes (dbfd, | |
13017 | dwp_htab->section_pool.v2.sizes | |
13018 | + (((unit_index - 1) * dwp_htab->nr_columns | |
13019 | + i) | |
13020 | * sizeof (uint32_t))); | |
13021 | ||
13022 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
13023 | { | |
13024 | case DW_SECT_INFO: | |
13025 | case DW_SECT_TYPES: | |
13026 | sections.info_or_types_offset = offset; | |
13027 | sections.info_or_types_size = size; | |
13028 | break; | |
13029 | case DW_SECT_ABBREV: | |
13030 | sections.abbrev_offset = offset; | |
13031 | sections.abbrev_size = size; | |
13032 | break; | |
13033 | case DW_SECT_LINE: | |
13034 | sections.line_offset = offset; | |
13035 | sections.line_size = size; | |
13036 | break; | |
13037 | case DW_SECT_LOC: | |
13038 | sections.loc_offset = offset; | |
13039 | sections.loc_size = size; | |
13040 | break; | |
13041 | case DW_SECT_STR_OFFSETS: | |
13042 | sections.str_offsets_offset = offset; | |
13043 | sections.str_offsets_size = size; | |
13044 | break; | |
13045 | case DW_SECT_MACINFO: | |
13046 | sections.macinfo_offset = offset; | |
13047 | sections.macinfo_size = size; | |
13048 | break; | |
13049 | case DW_SECT_MACRO: | |
13050 | sections.macro_offset = offset; | |
13051 | sections.macro_size = size; | |
13052 | break; | |
13053 | } | |
13054 | } | |
13055 | ||
13056 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
13057 | have dwo_unit "live" in that. At least for now. | |
13058 | ||
13059 | The DWP file can be made up of a random collection of CUs and TUs. | |
13060 | However, for each CU + set of TUs that came from the same original DWO | |
13061 | file, we can combine them back into a virtual DWO file to save space | |
13062 | (fewer struct dwo_file objects to allocate). Remember that for really | |
13063 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
13064 | ||
791afaa2 TT |
13065 | std::string virtual_dwo_name = |
13066 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
13067 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
13068 | (long) (sections.line_size ? sections.line_offset : 0), | |
13069 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
13070 | (long) (sections.str_offsets_size | |
13071 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 13072 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
13073 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13074 | virtual_dwo_name.c_str (), | |
13075 | comp_dir); | |
73869dc2 DE |
13076 | /* Create one if necessary. */ |
13077 | if (*dwo_file_slot == NULL) | |
13078 | { | |
b4f54984 | 13079 | if (dwarf_read_debug) |
73869dc2 DE |
13080 | { |
13081 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 13082 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
13083 | } |
13084 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
13085 | dwo_file->dwo_name |
13086 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
13087 | virtual_dwo_name.c_str (), |
13088 | virtual_dwo_name.size ()); | |
73869dc2 DE |
13089 | dwo_file->comp_dir = comp_dir; |
13090 | dwo_file->sections.abbrev = | |
ed2dc618 | 13091 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
13092 | sections.abbrev_offset, sections.abbrev_size); |
13093 | dwo_file->sections.line = | |
ed2dc618 | 13094 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
13095 | sections.line_offset, sections.line_size); |
13096 | dwo_file->sections.loc = | |
ed2dc618 | 13097 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
13098 | sections.loc_offset, sections.loc_size); |
13099 | dwo_file->sections.macinfo = | |
ed2dc618 | 13100 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
13101 | sections.macinfo_offset, sections.macinfo_size); |
13102 | dwo_file->sections.macro = | |
ed2dc618 | 13103 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
13104 | sections.macro_offset, sections.macro_size); |
13105 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
13106 | create_dwp_v2_section (dwarf2_per_objfile, |
13107 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
13108 | sections.str_offsets_offset, |
13109 | sections.str_offsets_size); | |
13110 | /* The "str" section is global to the entire DWP file. */ | |
13111 | dwo_file->sections.str = dwp_file->sections.str; | |
13112 | /* The info or types section is assigned below to dwo_unit, | |
13113 | there's no need to record it in dwo_file. | |
13114 | Also, we can't simply record type sections in dwo_file because | |
13115 | we record a pointer into the vector in dwo_unit. As we collect more | |
13116 | types we'll grow the vector and eventually have to reallocate space | |
13117 | for it, invalidating all copies of pointers into the previous | |
13118 | contents. */ | |
13119 | *dwo_file_slot = dwo_file; | |
13120 | } | |
13121 | else | |
13122 | { | |
b4f54984 | 13123 | if (dwarf_read_debug) |
73869dc2 DE |
13124 | { |
13125 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 13126 | virtual_dwo_name.c_str ()); |
73869dc2 | 13127 | } |
9a3c8263 | 13128 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 13129 | } |
73869dc2 DE |
13130 | |
13131 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
13132 | dwo_unit->dwo_file = dwo_file; | |
13133 | dwo_unit->signature = signature; | |
8d749320 SM |
13134 | dwo_unit->section = |
13135 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
13136 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
13137 | is_debug_types | |
73869dc2 DE |
13138 | ? &dwp_file->sections.types |
13139 | : &dwp_file->sections.info, | |
13140 | sections.info_or_types_offset, | |
13141 | sections.info_or_types_size); | |
13142 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
13143 | ||
13144 | return dwo_unit; | |
13145 | } | |
13146 | ||
57d63ce2 DE |
13147 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
13148 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
13149 | |
13150 | static struct dwo_unit * | |
ed2dc618 SM |
13151 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13152 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 13153 | ULONGEST signature, int is_debug_types) |
80626a55 | 13154 | { |
57d63ce2 DE |
13155 | const struct dwp_hash_table *dwp_htab = |
13156 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 13157 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 13158 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
13159 | uint32_t hash = signature & mask; |
13160 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
13161 | unsigned int i; | |
13162 | void **slot; | |
870f88f7 | 13163 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
13164 | |
13165 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
13166 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
13167 | slot = htab_find_slot (is_debug_types |
13168 | ? dwp_file->loaded_tus | |
13169 | : dwp_file->loaded_cus, | |
13170 | &find_dwo_cu, INSERT); | |
80626a55 DE |
13171 | |
13172 | if (*slot != NULL) | |
9a3c8263 | 13173 | return (struct dwo_unit *) *slot; |
80626a55 DE |
13174 | |
13175 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 13176 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
13177 | { |
13178 | ULONGEST signature_in_table; | |
13179 | ||
13180 | signature_in_table = | |
57d63ce2 | 13181 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
13182 | if (signature_in_table == signature) |
13183 | { | |
57d63ce2 DE |
13184 | uint32_t unit_index = |
13185 | read_4_bytes (dbfd, | |
13186 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 13187 | |
73869dc2 DE |
13188 | if (dwp_file->version == 1) |
13189 | { | |
ed2dc618 SM |
13190 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
13191 | dwp_file, unit_index, | |
73869dc2 DE |
13192 | comp_dir, signature, |
13193 | is_debug_types); | |
13194 | } | |
13195 | else | |
13196 | { | |
ed2dc618 SM |
13197 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
13198 | dwp_file, unit_index, | |
73869dc2 DE |
13199 | comp_dir, signature, |
13200 | is_debug_types); | |
13201 | } | |
9a3c8263 | 13202 | return (struct dwo_unit *) *slot; |
80626a55 DE |
13203 | } |
13204 | if (signature_in_table == 0) | |
13205 | return NULL; | |
13206 | hash = (hash + hash2) & mask; | |
13207 | } | |
13208 | ||
13209 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
13210 | " [in module %s]"), | |
13211 | dwp_file->name); | |
13212 | } | |
13213 | ||
ab5088bf | 13214 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
13215 | Open the file specified by FILE_NAME and hand it off to BFD for |
13216 | preliminary analysis. Return a newly initialized bfd *, which | |
13217 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 13218 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
13219 | SEARCH_CWD is true if the current directory is to be searched. |
13220 | It will be searched before debug-file-directory. | |
13aaf454 DE |
13221 | If successful, the file is added to the bfd include table of the |
13222 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 13223 | If unable to find/open the file, return NULL. |
3019eac3 DE |
13224 | NOTE: This function is derived from symfile_bfd_open. */ |
13225 | ||
192b62ce | 13226 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13227 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13228 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 13229 | { |
24b9144d | 13230 | int desc; |
9c02c129 DE |
13231 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
13232 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
13233 | to debug_file_directory. */ | |
e0cc99a6 | 13234 | const char *search_path; |
9c02c129 DE |
13235 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
13236 | ||
e0cc99a6 | 13237 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
13238 | if (search_cwd) |
13239 | { | |
13240 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
13241 | { |
13242 | search_path_holder.reset (concat (".", dirname_separator_string, | |
13243 | debug_file_directory, | |
13244 | (char *) NULL)); | |
13245 | search_path = search_path_holder.get (); | |
13246 | } | |
6ac97d4c | 13247 | else |
e0cc99a6 | 13248 | search_path = "."; |
6ac97d4c | 13249 | } |
9c02c129 | 13250 | else |
e0cc99a6 | 13251 | search_path = debug_file_directory; |
3019eac3 | 13252 | |
24b9144d | 13253 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
13254 | if (is_dwp) |
13255 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
13256 | |
13257 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 13258 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
13259 | O_RDONLY | O_BINARY, &absolute_name); |
13260 | if (desc < 0) | |
13261 | return NULL; | |
13262 | ||
e0cc99a6 TT |
13263 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
13264 | gnutarget, desc)); | |
9c02c129 DE |
13265 | if (sym_bfd == NULL) |
13266 | return NULL; | |
192b62ce | 13267 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 13268 | |
192b62ce TT |
13269 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
13270 | return NULL; | |
3019eac3 | 13271 | |
13aaf454 DE |
13272 | /* Success. Record the bfd as having been included by the objfile's bfd. |
13273 | This is important because things like demangled_names_hash lives in the | |
13274 | objfile's per_bfd space and may have references to things like symbol | |
13275 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 13276 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 13277 | |
3019eac3 DE |
13278 | return sym_bfd; |
13279 | } | |
13280 | ||
ab5088bf | 13281 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
13282 | COMP_DIR is the DW_AT_comp_dir attribute. |
13283 | The result is the bfd handle of the file. | |
13284 | If there is a problem finding or opening the file, return NULL. | |
13285 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13286 | same as symfile_bfd_open. */ | |
13287 | ||
192b62ce | 13288 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13289 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13290 | const char *file_name, const char *comp_dir) | |
3019eac3 | 13291 | { |
80626a55 | 13292 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
13293 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
13294 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
13295 | |
13296 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
13297 | ||
13298 | if (comp_dir != NULL) | |
13299 | { | |
b36cec19 PA |
13300 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
13301 | file_name, (char *) NULL); | |
3019eac3 DE |
13302 | |
13303 | /* NOTE: If comp_dir is a relative path, this will also try the | |
13304 | search path, which seems useful. */ | |
ed2dc618 SM |
13305 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
13306 | path_to_try, | |
13307 | 0 /*is_dwp*/, | |
192b62ce | 13308 | 1 /*search_cwd*/)); |
3019eac3 DE |
13309 | xfree (path_to_try); |
13310 | if (abfd != NULL) | |
13311 | return abfd; | |
13312 | } | |
13313 | ||
13314 | /* That didn't work, try debug-file-directory, which, despite its name, | |
13315 | is a list of paths. */ | |
13316 | ||
13317 | if (*debug_file_directory == '\0') | |
13318 | return NULL; | |
13319 | ||
ed2dc618 SM |
13320 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
13321 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
13322 | } |
13323 | ||
80626a55 DE |
13324 | /* This function is mapped across the sections and remembers the offset and |
13325 | size of each of the DWO debugging sections we are interested in. */ | |
13326 | ||
13327 | static void | |
13328 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
13329 | { | |
9a3c8263 | 13330 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
13331 | const struct dwop_section_names *names = &dwop_section_names; |
13332 | ||
13333 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13334 | { | |
049412e3 | 13335 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
13336 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
13337 | } | |
13338 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13339 | { | |
049412e3 | 13340 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
13341 | dwo_sections->info.size = bfd_get_section_size (sectp); |
13342 | } | |
13343 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13344 | { | |
049412e3 | 13345 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
13346 | dwo_sections->line.size = bfd_get_section_size (sectp); |
13347 | } | |
13348 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13349 | { | |
049412e3 | 13350 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
13351 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
13352 | } | |
13353 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13354 | { | |
049412e3 | 13355 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
13356 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
13357 | } | |
13358 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13359 | { | |
049412e3 | 13360 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
13361 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
13362 | } | |
13363 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
13364 | { | |
049412e3 | 13365 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
13366 | dwo_sections->str.size = bfd_get_section_size (sectp); |
13367 | } | |
13368 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13369 | { | |
049412e3 | 13370 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
13371 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
13372 | } | |
13373 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13374 | { | |
13375 | struct dwarf2_section_info type_section; | |
13376 | ||
13377 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 13378 | type_section.s.section = sectp; |
80626a55 DE |
13379 | type_section.size = bfd_get_section_size (sectp); |
13380 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
13381 | &type_section); | |
13382 | } | |
13383 | } | |
13384 | ||
ab5088bf | 13385 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 13386 | by PER_CU. This is for the non-DWP case. |
80626a55 | 13387 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
13388 | |
13389 | static struct dwo_file * | |
0ac5b59e DE |
13390 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
13391 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 13392 | { |
ed2dc618 | 13393 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 13394 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 | 13395 | struct dwo_file *dwo_file; |
3019eac3 DE |
13396 | struct cleanup *cleanups; |
13397 | ||
ed2dc618 | 13398 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
13399 | if (dbfd == NULL) |
13400 | { | |
b4f54984 | 13401 | if (dwarf_read_debug) |
80626a55 DE |
13402 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
13403 | return NULL; | |
13404 | } | |
13405 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
13406 | dwo_file->dwo_name = dwo_name; |
13407 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 13408 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 13409 | |
ed2dc618 SM |
13410 | free_dwo_file_cleanup_data *cleanup_data = XNEW (free_dwo_file_cleanup_data); |
13411 | cleanup_data->dwo_file = dwo_file; | |
13412 | cleanup_data->dwarf2_per_objfile = dwarf2_per_objfile; | |
13413 | ||
13414 | cleanups = make_cleanup (free_dwo_file_cleanup, cleanup_data); | |
3019eac3 | 13415 | |
192b62ce TT |
13416 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
13417 | &dwo_file->sections); | |
3019eac3 | 13418 | |
ed2dc618 SM |
13419 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
13420 | dwo_file->cus); | |
3019eac3 | 13421 | |
ed2dc618 SM |
13422 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file, |
13423 | dwo_file->sections.types, dwo_file->tus); | |
3019eac3 DE |
13424 | |
13425 | discard_cleanups (cleanups); | |
13426 | ||
b4f54984 | 13427 | if (dwarf_read_debug) |
80626a55 DE |
13428 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13429 | ||
3019eac3 DE |
13430 | return dwo_file; |
13431 | } | |
13432 | ||
80626a55 | 13433 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13434 | size of each of the DWP debugging sections common to version 1 and 2 that |
13435 | we are interested in. */ | |
3019eac3 | 13436 | |
80626a55 | 13437 | static void |
73869dc2 DE |
13438 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13439 | void *dwp_file_ptr) | |
3019eac3 | 13440 | { |
9a3c8263 | 13441 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13442 | const struct dwop_section_names *names = &dwop_section_names; |
13443 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13444 | |
80626a55 | 13445 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13446 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13447 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13448 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13449 | |
80626a55 DE |
13450 | /* Look for specific sections that we need. */ |
13451 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13452 | { | |
049412e3 | 13453 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13454 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13455 | } | |
13456 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13457 | { | |
049412e3 | 13458 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13459 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13460 | } | |
13461 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13462 | { | |
049412e3 | 13463 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13464 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13465 | } | |
13466 | } | |
3019eac3 | 13467 | |
73869dc2 DE |
13468 | /* This function is mapped across the sections and remembers the offset and |
13469 | size of each of the DWP version 2 debugging sections that we are interested | |
13470 | in. This is split into a separate function because we don't know if we | |
13471 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13472 | ||
13473 | static void | |
13474 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13475 | { | |
9a3c8263 | 13476 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13477 | const struct dwop_section_names *names = &dwop_section_names; |
13478 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13479 | ||
13480 | /* Record the ELF section number for later lookup: this is what the | |
13481 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13482 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13483 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13484 | ||
13485 | /* Look for specific sections that we need. */ | |
13486 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13487 | { | |
049412e3 | 13488 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13489 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13490 | } | |
13491 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13492 | { | |
049412e3 | 13493 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13494 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13495 | } | |
13496 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13497 | { | |
049412e3 | 13498 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13499 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13500 | } | |
13501 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13502 | { | |
049412e3 | 13503 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13504 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13505 | } | |
13506 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13507 | { | |
049412e3 | 13508 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13509 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13510 | } | |
13511 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13512 | { | |
049412e3 | 13513 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13514 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13515 | } | |
13516 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13517 | { | |
049412e3 | 13518 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13519 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13520 | } | |
13521 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13522 | { | |
049412e3 | 13523 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13524 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13525 | } | |
13526 | } | |
13527 | ||
80626a55 | 13528 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13529 | |
80626a55 DE |
13530 | static hashval_t |
13531 | hash_dwp_loaded_cutus (const void *item) | |
13532 | { | |
9a3c8263 | 13533 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13534 | |
80626a55 DE |
13535 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13536 | return dwo_unit->signature; | |
3019eac3 DE |
13537 | } |
13538 | ||
80626a55 | 13539 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13540 | |
80626a55 DE |
13541 | static int |
13542 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13543 | { |
9a3c8263 SM |
13544 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13545 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13546 | |
80626a55 DE |
13547 | return dua->signature == dub->signature; |
13548 | } | |
3019eac3 | 13549 | |
80626a55 | 13550 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13551 | |
80626a55 DE |
13552 | static htab_t |
13553 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13554 | { | |
13555 | return htab_create_alloc_ex (3, | |
13556 | hash_dwp_loaded_cutus, | |
13557 | eq_dwp_loaded_cutus, | |
13558 | NULL, | |
13559 | &objfile->objfile_obstack, | |
13560 | hashtab_obstack_allocate, | |
13561 | dummy_obstack_deallocate); | |
13562 | } | |
3019eac3 | 13563 | |
ab5088bf DE |
13564 | /* Try to open DWP file FILE_NAME. |
13565 | The result is the bfd handle of the file. | |
13566 | If there is a problem finding or opening the file, return NULL. | |
13567 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13568 | same as symfile_bfd_open. */ | |
13569 | ||
192b62ce | 13570 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13571 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13572 | const char *file_name) | |
ab5088bf | 13573 | { |
ed2dc618 SM |
13574 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13575 | 1 /*is_dwp*/, | |
192b62ce | 13576 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13577 | if (abfd != NULL) |
13578 | return abfd; | |
13579 | ||
13580 | /* Work around upstream bug 15652. | |
13581 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13582 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13583 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13584 | of the executable's path may have discarded the needed info. | |
13585 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13586 | .gnu_debuglink, but that doesn't exist yet.] | |
13587 | Strip the directory from FILE_NAME and search again. */ | |
13588 | if (*debug_file_directory != '\0') | |
13589 | { | |
13590 | /* Don't implicitly search the current directory here. | |
13591 | If the user wants to search "." to handle this case, | |
13592 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13593 | return try_open_dwop_file (dwarf2_per_objfile, |
13594 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13595 | 0 /*search_cwd*/); |
13596 | } | |
13597 | ||
13598 | return NULL; | |
ab5088bf DE |
13599 | } |
13600 | ||
80626a55 DE |
13601 | /* Initialize the use of the DWP file for the current objfile. |
13602 | By convention the name of the DWP file is ${objfile}.dwp. | |
13603 | The result is NULL if it can't be found. */ | |
a766d390 | 13604 | |
80626a55 | 13605 | static struct dwp_file * |
ed2dc618 | 13606 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13607 | { |
13608 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13609 | struct dwp_file *dwp_file; | |
80626a55 | 13610 | |
82bf32bc JK |
13611 | /* Try to find first .dwp for the binary file before any symbolic links |
13612 | resolving. */ | |
6c447423 DE |
13613 | |
13614 | /* If the objfile is a debug file, find the name of the real binary | |
13615 | file and get the name of dwp file from there. */ | |
d721ba37 | 13616 | std::string dwp_name; |
6c447423 DE |
13617 | if (objfile->separate_debug_objfile_backlink != NULL) |
13618 | { | |
13619 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13620 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13621 | |
d721ba37 | 13622 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13623 | } |
13624 | else | |
d721ba37 PA |
13625 | dwp_name = objfile->original_name; |
13626 | ||
13627 | dwp_name += ".dwp"; | |
80626a55 | 13628 | |
ed2dc618 | 13629 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13630 | if (dbfd == NULL |
13631 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13632 | { | |
13633 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13634 | dwp_name = objfile_name (objfile); |
13635 | dwp_name += ".dwp"; | |
ed2dc618 | 13636 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13637 | } |
13638 | ||
80626a55 DE |
13639 | if (dbfd == NULL) |
13640 | { | |
b4f54984 | 13641 | if (dwarf_read_debug) |
d721ba37 | 13642 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
80626a55 | 13643 | return NULL; |
3019eac3 | 13644 | } |
80626a55 | 13645 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
13646 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
13647 | dwp_file->dbfd = dbfd.release (); | |
c906108c | 13648 | |
80626a55 | 13649 | /* +1: section 0 is unused */ |
192b62ce | 13650 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13651 | dwp_file->elf_sections = |
13652 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13653 | dwp_file->num_sections, asection *); | |
13654 | ||
192b62ce TT |
13655 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
13656 | dwp_file); | |
80626a55 | 13657 | |
ed2dc618 | 13658 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 0); |
80626a55 | 13659 | |
ed2dc618 | 13660 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 1); |
80626a55 | 13661 | |
73869dc2 | 13662 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13663 | if (dwp_file->cus && dwp_file->tus |
13664 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13665 | { |
13666 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13667 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13668 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13669 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13670 | " TU version %s [in DWP file %s]"), | |
13671 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13672 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13673 | } |
08302ed2 DE |
13674 | |
13675 | if (dwp_file->cus) | |
13676 | dwp_file->version = dwp_file->cus->version; | |
13677 | else if (dwp_file->tus) | |
13678 | dwp_file->version = dwp_file->tus->version; | |
13679 | else | |
13680 | dwp_file->version = 2; | |
73869dc2 DE |
13681 | |
13682 | if (dwp_file->version == 2) | |
192b62ce TT |
13683 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
13684 | dwp_file); | |
73869dc2 | 13685 | |
19ac8c2e DE |
13686 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13687 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13688 | |
b4f54984 | 13689 | if (dwarf_read_debug) |
80626a55 DE |
13690 | { |
13691 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13692 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13693 | " %s CUs, %s TUs\n", |
13694 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13695 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13696 | } |
13697 | ||
13698 | return dwp_file; | |
3019eac3 | 13699 | } |
c906108c | 13700 | |
ab5088bf DE |
13701 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13702 | ||
13703 | static struct dwp_file * | |
ed2dc618 | 13704 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13705 | { |
13706 | if (! dwarf2_per_objfile->dwp_checked) | |
13707 | { | |
ed2dc618 SM |
13708 | dwarf2_per_objfile->dwp_file |
13709 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13710 | dwarf2_per_objfile->dwp_checked = 1; |
13711 | } | |
13712 | return dwarf2_per_objfile->dwp_file; | |
13713 | } | |
13714 | ||
80626a55 DE |
13715 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13716 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13717 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13718 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13719 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13720 | ||
13721 | This is called, for example, when wanting to read a variable with a | |
13722 | complex location. Therefore we don't want to do file i/o for every call. | |
13723 | Therefore we don't want to look for a DWO file on every call. | |
13724 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13725 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13726 | for a DWO file. | |
13727 | ||
1c658ad5 | 13728 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13729 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13730 | |
3019eac3 | 13731 | static struct dwo_unit * |
80626a55 DE |
13732 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13733 | const char *dwo_name, const char *comp_dir, | |
13734 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13735 | { |
ed2dc618 | 13736 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13737 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13738 | const char *kind = is_debug_types ? "TU" : "CU"; |
13739 | void **dwo_file_slot; | |
3019eac3 | 13740 | struct dwo_file *dwo_file; |
80626a55 | 13741 | struct dwp_file *dwp_file; |
cb1df416 | 13742 | |
6a506a2d DE |
13743 | /* First see if there's a DWP file. |
13744 | If we have a DWP file but didn't find the DWO inside it, don't | |
13745 | look for the original DWO file. It makes gdb behave differently | |
13746 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13747 | |
ed2dc618 | 13748 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13749 | if (dwp_file != NULL) |
cf2c3c16 | 13750 | { |
80626a55 DE |
13751 | const struct dwp_hash_table *dwp_htab = |
13752 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13753 | ||
13754 | if (dwp_htab != NULL) | |
13755 | { | |
13756 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13757 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13758 | signature, is_debug_types); |
80626a55 DE |
13759 | |
13760 | if (dwo_cutu != NULL) | |
13761 | { | |
b4f54984 | 13762 | if (dwarf_read_debug) |
80626a55 DE |
13763 | { |
13764 | fprintf_unfiltered (gdb_stdlog, | |
13765 | "Virtual DWO %s %s found: @%s\n", | |
13766 | kind, hex_string (signature), | |
13767 | host_address_to_string (dwo_cutu)); | |
13768 | } | |
13769 | return dwo_cutu; | |
13770 | } | |
13771 | } | |
13772 | } | |
6a506a2d | 13773 | else |
80626a55 | 13774 | { |
6a506a2d | 13775 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13776 | |
ed2dc618 SM |
13777 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13778 | dwo_name, comp_dir); | |
6a506a2d | 13779 | if (*dwo_file_slot == NULL) |
80626a55 | 13780 | { |
6a506a2d DE |
13781 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13782 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13783 | } |
6a506a2d | 13784 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13785 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13786 | |
6a506a2d | 13787 | if (dwo_file != NULL) |
19c3d4c9 | 13788 | { |
6a506a2d DE |
13789 | struct dwo_unit *dwo_cutu = NULL; |
13790 | ||
13791 | if (is_debug_types && dwo_file->tus) | |
13792 | { | |
13793 | struct dwo_unit find_dwo_cutu; | |
13794 | ||
13795 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13796 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13797 | dwo_cutu |
13798 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13799 | } |
33c5cd75 | 13800 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13801 | { |
33c5cd75 DB |
13802 | struct dwo_unit find_dwo_cutu; |
13803 | ||
13804 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13805 | find_dwo_cutu.signature = signature; | |
13806 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13807 | &find_dwo_cutu); | |
6a506a2d DE |
13808 | } |
13809 | ||
13810 | if (dwo_cutu != NULL) | |
13811 | { | |
b4f54984 | 13812 | if (dwarf_read_debug) |
6a506a2d DE |
13813 | { |
13814 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13815 | kind, dwo_name, hex_string (signature), | |
13816 | host_address_to_string (dwo_cutu)); | |
13817 | } | |
13818 | return dwo_cutu; | |
80626a55 DE |
13819 | } |
13820 | } | |
2e276125 | 13821 | } |
9cdd5dbd | 13822 | |
80626a55 DE |
13823 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13824 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13825 | correctly to find the file. */ | |
13826 | ||
b4f54984 | 13827 | if (dwarf_read_debug) |
80626a55 DE |
13828 | { |
13829 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13830 | kind, dwo_name, hex_string (signature)); | |
13831 | } | |
3019eac3 | 13832 | |
6656a72d DE |
13833 | /* This is a warning and not a complaint because it can be caused by |
13834 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13835 | { |
13836 | /* Print the name of the DWP file if we looked there, helps the user | |
13837 | better diagnose the problem. */ | |
791afaa2 | 13838 | std::string dwp_text; |
43942612 DE |
13839 | |
13840 | if (dwp_file != NULL) | |
791afaa2 TT |
13841 | dwp_text = string_printf (" [in DWP file %s]", |
13842 | lbasename (dwp_file->name)); | |
43942612 | 13843 | |
9d8780f0 | 13844 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13845 | " [in module %s]"), |
13846 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13847 | dwp_text.c_str (), |
43942612 | 13848 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13849 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13850 | } |
3019eac3 | 13851 | return NULL; |
5fb290d7 DJ |
13852 | } |
13853 | ||
80626a55 DE |
13854 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13855 | See lookup_dwo_cutu_unit for details. */ | |
13856 | ||
13857 | static struct dwo_unit * | |
13858 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13859 | const char *dwo_name, const char *comp_dir, | |
13860 | ULONGEST signature) | |
13861 | { | |
13862 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13863 | } | |
13864 | ||
13865 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13866 | See lookup_dwo_cutu_unit for details. */ | |
13867 | ||
13868 | static struct dwo_unit * | |
13869 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13870 | const char *dwo_name, const char *comp_dir) | |
13871 | { | |
13872 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13873 | } | |
13874 | ||
89e63ee4 DE |
13875 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13876 | ||
13877 | static int | |
13878 | queue_and_load_dwo_tu (void **slot, void *info) | |
13879 | { | |
13880 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13881 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13882 | ULONGEST signature = dwo_unit->signature; | |
13883 | struct signatured_type *sig_type = | |
13884 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13885 | ||
13886 | if (sig_type != NULL) | |
13887 | { | |
13888 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13889 | ||
13890 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13891 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13892 | while processing PER_CU. */ | |
13893 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13894 | load_full_type_unit (sig_cu); | |
13895 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13896 | } | |
13897 | ||
13898 | return 1; | |
13899 | } | |
13900 | ||
13901 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13902 | The DWO may have the only definition of the type, though it may not be | |
13903 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13904 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13905 | ||
13906 | static void | |
13907 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13908 | { | |
13909 | struct dwo_unit *dwo_unit; | |
13910 | struct dwo_file *dwo_file; | |
13911 | ||
13912 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13913 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13914 | gdb_assert (per_cu->cu != NULL); |
13915 | ||
13916 | dwo_unit = per_cu->cu->dwo_unit; | |
13917 | gdb_assert (dwo_unit != NULL); | |
13918 | ||
13919 | dwo_file = dwo_unit->dwo_file; | |
13920 | if (dwo_file->tus != NULL) | |
13921 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13922 | } | |
13923 | ||
3019eac3 DE |
13924 | /* Free all resources associated with DWO_FILE. |
13925 | Close the DWO file and munmap the sections. | |
13926 | All memory should be on the objfile obstack. */ | |
348e048f DE |
13927 | |
13928 | static void | |
3019eac3 | 13929 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 13930 | { |
348e048f | 13931 | |
5c6fa7ab | 13932 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13933 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13934 | |
3019eac3 DE |
13935 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13936 | } | |
348e048f | 13937 | |
3019eac3 | 13938 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 13939 | |
3019eac3 DE |
13940 | static void |
13941 | free_dwo_file_cleanup (void *arg) | |
13942 | { | |
ed2dc618 SM |
13943 | struct free_dwo_file_cleanup_data *data |
13944 | = (struct free_dwo_file_cleanup_data *) arg; | |
13945 | struct objfile *objfile = data->dwarf2_per_objfile->objfile; | |
348e048f | 13946 | |
ed2dc618 SM |
13947 | free_dwo_file (data->dwo_file, objfile); |
13948 | ||
13949 | xfree (data); | |
3019eac3 | 13950 | } |
348e048f | 13951 | |
3019eac3 | 13952 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13953 | |
3019eac3 DE |
13954 | static int |
13955 | free_dwo_file_from_slot (void **slot, void *info) | |
13956 | { | |
13957 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
13958 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 13959 | |
3019eac3 | 13960 | free_dwo_file (dwo_file, objfile); |
348e048f | 13961 | |
3019eac3 DE |
13962 | return 1; |
13963 | } | |
348e048f | 13964 | |
3019eac3 | 13965 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13966 | |
3019eac3 DE |
13967 | static void |
13968 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13969 | { | |
13970 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13971 | } |
3019eac3 DE |
13972 | \f |
13973 | /* Read in various DIEs. */ | |
348e048f | 13974 | |
d389af10 | 13975 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13976 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13977 | already referenced by DW_AT_abstract_origin from the children of the | |
13978 | current DIE. */ | |
d389af10 JK |
13979 | |
13980 | static void | |
13981 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13982 | { | |
13983 | struct die_info *child_die; | |
791afaa2 | 13984 | sect_offset *offsetp; |
d389af10 JK |
13985 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13986 | struct die_info *origin_die; | |
13987 | /* Iterator of the ORIGIN_DIE children. */ | |
13988 | struct die_info *origin_child_die; | |
d389af10 | 13989 | struct attribute *attr; |
cd02d79d PA |
13990 | struct dwarf2_cu *origin_cu; |
13991 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13992 | |
13993 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13994 | if (!attr) | |
13995 | return; | |
13996 | ||
cd02d79d PA |
13997 | /* Note that following die references may follow to a die in a |
13998 | different cu. */ | |
13999 | ||
14000 | origin_cu = cu; | |
14001 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
14002 | ||
14003 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
14004 | symbols in. */ | |
14005 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
14006 | origin_cu->list_in_scope = cu->list_in_scope; | |
14007 | ||
edb3359d DJ |
14008 | if (die->tag != origin_die->tag |
14009 | && !(die->tag == DW_TAG_inlined_subroutine | |
14010 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 | 14011 | complaint (&symfile_complaints, |
9d8780f0 SM |
14012 | _("DIE %s and its abstract origin %s have different tags"), |
14013 | sect_offset_str (die->sect_off), | |
14014 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 14015 | |
791afaa2 | 14016 | std::vector<sect_offset> offsets; |
d389af10 | 14017 | |
3ea89b92 PMR |
14018 | for (child_die = die->child; |
14019 | child_die && child_die->tag; | |
14020 | child_die = sibling_die (child_die)) | |
14021 | { | |
14022 | struct die_info *child_origin_die; | |
14023 | struct dwarf2_cu *child_origin_cu; | |
14024 | ||
14025 | /* We are trying to process concrete instance entries: | |
216f72a1 | 14026 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
14027 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
14028 | present in the abstract instance but not referenced in the concrete | |
14029 | one. */ | |
216f72a1 JK |
14030 | if (child_die->tag == DW_TAG_call_site |
14031 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
14032 | continue; |
14033 | ||
c38f313d DJ |
14034 | /* For each CHILD_DIE, find the corresponding child of |
14035 | ORIGIN_DIE. If there is more than one layer of | |
14036 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
14037 | but GCC versions at least through 4.4 generate this (GCC PR | |
14038 | 40573). */ | |
3ea89b92 PMR |
14039 | child_origin_die = child_die; |
14040 | child_origin_cu = cu; | |
c38f313d DJ |
14041 | while (1) |
14042 | { | |
cd02d79d PA |
14043 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
14044 | child_origin_cu); | |
c38f313d DJ |
14045 | if (attr == NULL) |
14046 | break; | |
cd02d79d PA |
14047 | child_origin_die = follow_die_ref (child_origin_die, attr, |
14048 | &child_origin_cu); | |
c38f313d DJ |
14049 | } |
14050 | ||
d389af10 JK |
14051 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
14052 | counterpart may exist. */ | |
c38f313d | 14053 | if (child_origin_die != child_die) |
d389af10 | 14054 | { |
edb3359d DJ |
14055 | if (child_die->tag != child_origin_die->tag |
14056 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
14057 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 | 14058 | complaint (&symfile_complaints, |
9d8780f0 | 14059 | _("Child DIE %s and its abstract origin %s have " |
9c541725 | 14060 | "different tags"), |
9d8780f0 SM |
14061 | sect_offset_str (child_die->sect_off), |
14062 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d DJ |
14063 | if (child_origin_die->parent != origin_die) |
14064 | complaint (&symfile_complaints, | |
9d8780f0 | 14065 | _("Child DIE %s and its abstract origin %s have " |
9c541725 | 14066 | "different parents"), |
9d8780f0 SM |
14067 | sect_offset_str (child_die->sect_off), |
14068 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 14069 | else |
791afaa2 | 14070 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 14071 | } |
d389af10 | 14072 | } |
791afaa2 TT |
14073 | std::sort (offsets.begin (), offsets.end ()); |
14074 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
14075 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 14076 | if (offsetp[-1] == *offsetp) |
3e43a32a | 14077 | complaint (&symfile_complaints, |
9d8780f0 SM |
14078 | _("Multiple children of DIE %s refer " |
14079 | "to DIE %s as their abstract origin"), | |
14080 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 14081 | |
791afaa2 | 14082 | offsetp = offsets.data (); |
d389af10 JK |
14083 | origin_child_die = origin_die->child; |
14084 | while (origin_child_die && origin_child_die->tag) | |
14085 | { | |
14086 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 14087 | while (offsetp < offsets_end |
9c541725 | 14088 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 14089 | offsetp++; |
b64f50a1 | 14090 | if (offsetp >= offsets_end |
9c541725 | 14091 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 14092 | { |
adde2bff DE |
14093 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
14094 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
14095 | This can happen with mutually referenced abstract_origins. | |
14096 | PR 16581. */ | |
14097 | if (!origin_child_die->in_process) | |
14098 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
14099 | } |
14100 | origin_child_die = sibling_die (origin_child_die); | |
14101 | } | |
cd02d79d | 14102 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
14103 | } |
14104 | ||
c906108c | 14105 | static void |
e7c27a73 | 14106 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14107 | { |
518817b3 | 14108 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14109 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 14110 | struct context_stack *newobj; |
c906108c SS |
14111 | CORE_ADDR lowpc; |
14112 | CORE_ADDR highpc; | |
14113 | struct die_info *child_die; | |
edb3359d | 14114 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 14115 | const char *name; |
e142c38c | 14116 | CORE_ADDR baseaddr; |
801e3a5b | 14117 | struct block *block; |
edb3359d | 14118 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 14119 | std::vector<struct symbol *> template_args; |
34eaf542 | 14120 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
14121 | |
14122 | if (inlined_func) | |
14123 | { | |
14124 | /* If we do not have call site information, we can't show the | |
14125 | caller of this inlined function. That's too confusing, so | |
14126 | only use the scope for local variables. */ | |
14127 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
14128 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
14129 | if (call_line == NULL || call_file == NULL) | |
14130 | { | |
14131 | read_lexical_block_scope (die, cu); | |
14132 | return; | |
14133 | } | |
14134 | } | |
c906108c | 14135 | |
e142c38c DJ |
14136 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
14137 | ||
94af9270 | 14138 | name = dwarf2_name (die, cu); |
c906108c | 14139 | |
e8d05480 JB |
14140 | /* Ignore functions with missing or empty names. These are actually |
14141 | illegal according to the DWARF standard. */ | |
14142 | if (name == NULL) | |
14143 | { | |
14144 | complaint (&symfile_complaints, | |
9d8780f0 SM |
14145 | _("missing name for subprogram DIE at %s"), |
14146 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
14147 | return; |
14148 | } | |
14149 | ||
14150 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 14151 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 14152 | <= PC_BOUNDS_INVALID) |
e8d05480 | 14153 | { |
ae4d0c03 PM |
14154 | attr = dwarf2_attr (die, DW_AT_external, cu); |
14155 | if (!attr || !DW_UNSND (attr)) | |
14156 | complaint (&symfile_complaints, | |
3e43a32a | 14157 | _("cannot get low and high bounds " |
9d8780f0 SM |
14158 | "for subprogram DIE at %s"), |
14159 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
14160 | return; |
14161 | } | |
c906108c | 14162 | |
3e29f34a MR |
14163 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
14164 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 14165 | |
34eaf542 TT |
14166 | /* If we have any template arguments, then we must allocate a |
14167 | different sort of symbol. */ | |
14168 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
14169 | { | |
14170 | if (child_die->tag == DW_TAG_template_type_param | |
14171 | || child_die->tag == DW_TAG_template_value_param) | |
14172 | { | |
e623cf5d | 14173 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 14174 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
14175 | break; |
14176 | } | |
14177 | } | |
14178 | ||
fe978cb0 | 14179 | newobj = push_context (0, lowpc); |
5e2db402 TT |
14180 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
14181 | (struct symbol *) templ_func); | |
4c2df51b | 14182 | |
4cecd739 DJ |
14183 | /* If there is a location expression for DW_AT_frame_base, record |
14184 | it. */ | |
e142c38c | 14185 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 14186 | if (attr) |
fe978cb0 | 14187 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 14188 | |
63e43d3a PMR |
14189 | /* If there is a location for the static link, record it. */ |
14190 | newobj->static_link = NULL; | |
14191 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
14192 | if (attr) | |
14193 | { | |
224c3ddb SM |
14194 | newobj->static_link |
14195 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
14196 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
14197 | } | |
14198 | ||
e142c38c | 14199 | cu->list_in_scope = &local_symbols; |
c906108c | 14200 | |
639d11d3 | 14201 | if (die->child != NULL) |
c906108c | 14202 | { |
639d11d3 | 14203 | child_die = die->child; |
c906108c SS |
14204 | while (child_die && child_die->tag) |
14205 | { | |
34eaf542 TT |
14206 | if (child_die->tag == DW_TAG_template_type_param |
14207 | || child_die->tag == DW_TAG_template_value_param) | |
14208 | { | |
14209 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
14210 | ||
f1078f66 | 14211 | if (arg != NULL) |
2f4732b0 | 14212 | template_args.push_back (arg); |
34eaf542 TT |
14213 | } |
14214 | else | |
14215 | process_die (child_die, cu); | |
c906108c SS |
14216 | child_die = sibling_die (child_die); |
14217 | } | |
14218 | } | |
14219 | ||
d389af10 JK |
14220 | inherit_abstract_dies (die, cu); |
14221 | ||
4a811a97 UW |
14222 | /* If we have a DW_AT_specification, we might need to import using |
14223 | directives from the context of the specification DIE. See the | |
14224 | comment in determine_prefix. */ | |
14225 | if (cu->language == language_cplus | |
14226 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
14227 | { | |
14228 | struct dwarf2_cu *spec_cu = cu; | |
14229 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
14230 | ||
14231 | while (spec_die) | |
14232 | { | |
14233 | child_die = spec_die->child; | |
14234 | while (child_die && child_die->tag) | |
14235 | { | |
14236 | if (child_die->tag == DW_TAG_imported_module) | |
14237 | process_die (child_die, spec_cu); | |
14238 | child_die = sibling_die (child_die); | |
14239 | } | |
14240 | ||
14241 | /* In some cases, GCC generates specification DIEs that | |
14242 | themselves contain DW_AT_specification attributes. */ | |
14243 | spec_die = die_specification (spec_die, &spec_cu); | |
14244 | } | |
14245 | } | |
14246 | ||
fe978cb0 | 14247 | newobj = pop_context (); |
c906108c | 14248 | /* Make a block for the local symbols within. */ |
fe978cb0 | 14249 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 14250 | newobj->static_link, lowpc, highpc); |
801e3a5b | 14251 | |
df8a16a1 | 14252 | /* For C++, set the block's scope. */ |
45280282 IB |
14253 | if ((cu->language == language_cplus |
14254 | || cu->language == language_fortran | |
c44af4eb TT |
14255 | || cu->language == language_d |
14256 | || cu->language == language_rust) | |
4d4ec4e5 | 14257 | && cu->processing_has_namespace_info) |
195a3f6c TT |
14258 | block_set_scope (block, determine_prefix (die, cu), |
14259 | &objfile->objfile_obstack); | |
df8a16a1 | 14260 | |
801e3a5b JB |
14261 | /* If we have address ranges, record them. */ |
14262 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 14263 | |
fe978cb0 | 14264 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 14265 | |
34eaf542 | 14266 | /* Attach template arguments to function. */ |
2f4732b0 | 14267 | if (!template_args.empty ()) |
34eaf542 TT |
14268 | { |
14269 | gdb_assert (templ_func != NULL); | |
14270 | ||
2f4732b0 | 14271 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 14272 | templ_func->template_arguments |
8d749320 SM |
14273 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
14274 | templ_func->n_template_arguments); | |
34eaf542 | 14275 | memcpy (templ_func->template_arguments, |
2f4732b0 | 14276 | template_args.data (), |
34eaf542 | 14277 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
34eaf542 TT |
14278 | } |
14279 | ||
208d8187 JB |
14280 | /* In C++, we can have functions nested inside functions (e.g., when |
14281 | a function declares a class that has methods). This means that | |
14282 | when we finish processing a function scope, we may need to go | |
14283 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 14284 | local_symbols = newobj->locals; |
22cee43f | 14285 | local_using_directives = newobj->local_using_directives; |
208d8187 | 14286 | |
921e78cf JB |
14287 | /* If we've finished processing a top-level function, subsequent |
14288 | symbols go in the file symbol list. */ | |
14289 | if (outermost_context_p ()) | |
e142c38c | 14290 | cu->list_in_scope = &file_symbols; |
c906108c SS |
14291 | } |
14292 | ||
14293 | /* Process all the DIES contained within a lexical block scope. Start | |
14294 | a new scope, process the dies, and then close the scope. */ | |
14295 | ||
14296 | static void | |
e7c27a73 | 14297 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14298 | { |
518817b3 | 14299 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14300 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 14301 | struct context_stack *newobj; |
c906108c SS |
14302 | CORE_ADDR lowpc, highpc; |
14303 | struct die_info *child_die; | |
e142c38c DJ |
14304 | CORE_ADDR baseaddr; |
14305 | ||
14306 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
14307 | |
14308 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
14309 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
14310 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 14311 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 14312 | describe ranges. */ |
e385593e JK |
14313 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
14314 | { | |
14315 | case PC_BOUNDS_NOT_PRESENT: | |
14316 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
14317 | there was no wrapping by that DW_TAG_lexical_block. | |
14318 | GCC does no longer produces such DWARF since GCC r224161. */ | |
14319 | for (child_die = die->child; | |
14320 | child_die != NULL && child_die->tag; | |
14321 | child_die = sibling_die (child_die)) | |
14322 | process_die (child_die, cu); | |
14323 | return; | |
14324 | case PC_BOUNDS_INVALID: | |
14325 | return; | |
14326 | } | |
3e29f34a MR |
14327 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
14328 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
14329 | |
14330 | push_context (0, lowpc); | |
639d11d3 | 14331 | if (die->child != NULL) |
c906108c | 14332 | { |
639d11d3 | 14333 | child_die = die->child; |
c906108c SS |
14334 | while (child_die && child_die->tag) |
14335 | { | |
e7c27a73 | 14336 | process_die (child_die, cu); |
c906108c SS |
14337 | child_die = sibling_die (child_die); |
14338 | } | |
14339 | } | |
3ea89b92 | 14340 | inherit_abstract_dies (die, cu); |
fe978cb0 | 14341 | newobj = pop_context (); |
c906108c | 14342 | |
22cee43f | 14343 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 14344 | { |
801e3a5b | 14345 | struct block *block |
63e43d3a | 14346 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 14347 | newobj->start_addr, highpc); |
801e3a5b JB |
14348 | |
14349 | /* Note that recording ranges after traversing children, as we | |
14350 | do here, means that recording a parent's ranges entails | |
14351 | walking across all its children's ranges as they appear in | |
14352 | the address map, which is quadratic behavior. | |
14353 | ||
14354 | It would be nicer to record the parent's ranges before | |
14355 | traversing its children, simply overriding whatever you find | |
14356 | there. But since we don't even decide whether to create a | |
14357 | block until after we've traversed its children, that's hard | |
14358 | to do. */ | |
14359 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 14360 | } |
fe978cb0 | 14361 | local_symbols = newobj->locals; |
22cee43f | 14362 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
14363 | } |
14364 | ||
216f72a1 | 14365 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
14366 | |
14367 | static void | |
14368 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
14369 | { | |
518817b3 | 14370 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
14371 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14372 | CORE_ADDR pc, baseaddr; | |
14373 | struct attribute *attr; | |
14374 | struct call_site *call_site, call_site_local; | |
14375 | void **slot; | |
14376 | int nparams; | |
14377 | struct die_info *child_die; | |
14378 | ||
14379 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14380 | ||
216f72a1 JK |
14381 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
14382 | if (attr == NULL) | |
14383 | { | |
14384 | /* This was a pre-DWARF-5 GNU extension alias | |
14385 | for DW_AT_call_return_pc. */ | |
14386 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
14387 | } | |
96408a79 SA |
14388 | if (!attr) |
14389 | { | |
14390 | complaint (&symfile_complaints, | |
216f72a1 | 14391 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
14392 | "DIE %s [in module %s]"), |
14393 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14394 | return; |
14395 | } | |
31aa7e4e | 14396 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 14397 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
14398 | |
14399 | if (cu->call_site_htab == NULL) | |
14400 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
14401 | NULL, &objfile->objfile_obstack, | |
14402 | hashtab_obstack_allocate, NULL); | |
14403 | call_site_local.pc = pc; | |
14404 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
14405 | if (*slot != NULL) | |
14406 | { | |
14407 | complaint (&symfile_complaints, | |
216f72a1 | 14408 | _("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
14409 | "DIE %s [in module %s]"), |
14410 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 14411 | objfile_name (objfile)); |
96408a79 SA |
14412 | return; |
14413 | } | |
14414 | ||
14415 | /* Count parameters at the caller. */ | |
14416 | ||
14417 | nparams = 0; | |
14418 | for (child_die = die->child; child_die && child_die->tag; | |
14419 | child_die = sibling_die (child_die)) | |
14420 | { | |
216f72a1 JK |
14421 | if (child_die->tag != DW_TAG_call_site_parameter |
14422 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14423 | { |
14424 | complaint (&symfile_complaints, | |
216f72a1 | 14425 | _("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
14426 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14427 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 14428 | objfile_name (objfile)); |
96408a79 SA |
14429 | continue; |
14430 | } | |
14431 | ||
14432 | nparams++; | |
14433 | } | |
14434 | ||
224c3ddb SM |
14435 | call_site |
14436 | = ((struct call_site *) | |
14437 | obstack_alloc (&objfile->objfile_obstack, | |
14438 | sizeof (*call_site) | |
14439 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
14440 | *slot = call_site; |
14441 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14442 | call_site->pc = pc; | |
14443 | ||
216f72a1 JK |
14444 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14445 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14446 | { |
14447 | struct die_info *func_die; | |
14448 | ||
14449 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14450 | for (func_die = die->parent; | |
14451 | func_die && func_die->tag != DW_TAG_subprogram | |
14452 | && func_die->tag != DW_TAG_subroutine_type; | |
14453 | func_die = func_die->parent); | |
14454 | ||
216f72a1 JK |
14455 | /* DW_AT_call_all_calls is a superset |
14456 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14457 | if (func_die |
216f72a1 | 14458 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14459 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14460 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14461 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14462 | { | |
14463 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14464 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14465 | both the initial caller containing the real return address PC and | |
14466 | the final callee containing the current PC of a chain of tail | |
14467 | calls do not need to have the tail call list complete. But any | |
14468 | function candidate for a virtual tail call frame searched via | |
14469 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14470 | determined unambiguously. */ | |
14471 | } | |
14472 | else | |
14473 | { | |
14474 | struct type *func_type = NULL; | |
14475 | ||
14476 | if (func_die) | |
14477 | func_type = get_die_type (func_die, cu); | |
14478 | if (func_type != NULL) | |
14479 | { | |
14480 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14481 | ||
14482 | /* Enlist this call site to the function. */ | |
14483 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14484 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14485 | } | |
14486 | else | |
14487 | complaint (&symfile_complaints, | |
216f72a1 | 14488 | _("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14489 | "DIE %s [in module %s]"), |
14490 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14491 | } |
14492 | } | |
14493 | ||
216f72a1 JK |
14494 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14495 | if (attr == NULL) | |
14496 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14497 | if (attr == NULL) | |
14498 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14499 | if (attr == NULL) |
216f72a1 JK |
14500 | { |
14501 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14502 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14503 | } | |
96408a79 SA |
14504 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14505 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14506 | /* Keep NULL DWARF_BLOCK. */; | |
14507 | else if (attr_form_is_block (attr)) | |
14508 | { | |
14509 | struct dwarf2_locexpr_baton *dlbaton; | |
14510 | ||
8d749320 | 14511 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14512 | dlbaton->data = DW_BLOCK (attr)->data; |
14513 | dlbaton->size = DW_BLOCK (attr)->size; | |
14514 | dlbaton->per_cu = cu->per_cu; | |
14515 | ||
14516 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14517 | } | |
7771576e | 14518 | else if (attr_form_is_ref (attr)) |
96408a79 | 14519 | { |
96408a79 SA |
14520 | struct dwarf2_cu *target_cu = cu; |
14521 | struct die_info *target_die; | |
14522 | ||
ac9ec31b | 14523 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14524 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14525 | if (die_is_declaration (target_die, target_cu)) |
14526 | { | |
7d45c7c3 | 14527 | const char *target_physname; |
9112db09 JK |
14528 | |
14529 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14530 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14531 | if (target_physname == NULL) |
9112db09 | 14532 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
14533 | if (target_physname == NULL) |
14534 | complaint (&symfile_complaints, | |
216f72a1 | 14535 | _("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14536 | "physname, for referencing DIE %s [in module %s]"), |
14537 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14538 | else |
7d455152 | 14539 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14540 | } |
14541 | else | |
14542 | { | |
14543 | CORE_ADDR lowpc; | |
14544 | ||
14545 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14546 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14547 | <= PC_BOUNDS_INVALID) |
96408a79 | 14548 | complaint (&symfile_complaints, |
216f72a1 | 14549 | _("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14550 | "low pc, for referencing DIE %s [in module %s]"), |
14551 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14552 | else |
3e29f34a MR |
14553 | { |
14554 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14555 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14556 | } | |
96408a79 SA |
14557 | } |
14558 | } | |
14559 | else | |
14560 | complaint (&symfile_complaints, | |
216f72a1 | 14561 | _("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14562 | "block nor reference, for DIE %s [in module %s]"), |
14563 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14564 | |
14565 | call_site->per_cu = cu->per_cu; | |
14566 | ||
14567 | for (child_die = die->child; | |
14568 | child_die && child_die->tag; | |
14569 | child_die = sibling_die (child_die)) | |
14570 | { | |
96408a79 | 14571 | struct call_site_parameter *parameter; |
1788b2d3 | 14572 | struct attribute *loc, *origin; |
96408a79 | 14573 | |
216f72a1 JK |
14574 | if (child_die->tag != DW_TAG_call_site_parameter |
14575 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14576 | { |
14577 | /* Already printed the complaint above. */ | |
14578 | continue; | |
14579 | } | |
14580 | ||
14581 | gdb_assert (call_site->parameter_count < nparams); | |
14582 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14583 | ||
1788b2d3 JK |
14584 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14585 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14586 | register is contained in DW_AT_call_value. */ |
96408a79 | 14587 | |
24c5c679 | 14588 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14589 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14590 | if (origin == NULL) | |
14591 | { | |
14592 | /* This was a pre-DWARF-5 GNU extension alias | |
14593 | for DW_AT_call_parameter. */ | |
14594 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14595 | } | |
7771576e | 14596 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14597 | { |
1788b2d3 | 14598 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14599 | |
14600 | sect_offset sect_off | |
14601 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14602 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14603 | { |
14604 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14605 | binding can be done only inside one CU. Such referenced DIE | |
14606 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
14607 | complaint (&symfile_complaints, | |
216f72a1 | 14608 | _("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14609 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14610 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14611 | objfile_name (objfile)); |
d76b7dbc JK |
14612 | continue; |
14613 | } | |
9c541725 PA |
14614 | parameter->u.param_cu_off |
14615 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14616 | } |
14617 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
14618 | { |
14619 | complaint (&symfile_complaints, | |
14620 | _("No DW_FORM_block* DW_AT_location for " | |
9d8780f0 SM |
14621 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14622 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14623 | continue; |
14624 | } | |
24c5c679 | 14625 | else |
96408a79 | 14626 | { |
24c5c679 JK |
14627 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14628 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14629 | if (parameter->u.dwarf_reg != -1) | |
14630 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14631 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14632 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14633 | ¶meter->u.fb_offset)) | |
14634 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14635 | else | |
14636 | { | |
14637 | complaint (&symfile_complaints, | |
14638 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
14639 | "for DW_FORM_block* DW_AT_location is supported for " | |
9d8780f0 | 14640 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14641 | "[in module %s]"), |
9d8780f0 | 14642 | sect_offset_str (child_die->sect_off), |
9c541725 | 14643 | objfile_name (objfile)); |
24c5c679 JK |
14644 | continue; |
14645 | } | |
96408a79 SA |
14646 | } |
14647 | ||
216f72a1 JK |
14648 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14649 | if (attr == NULL) | |
14650 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14651 | if (!attr_form_is_block (attr)) |
14652 | { | |
14653 | complaint (&symfile_complaints, | |
216f72a1 | 14654 | _("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14655 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14656 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14657 | objfile_name (objfile)); |
96408a79 SA |
14658 | continue; |
14659 | } | |
14660 | parameter->value = DW_BLOCK (attr)->data; | |
14661 | parameter->value_size = DW_BLOCK (attr)->size; | |
14662 | ||
14663 | /* Parameters are not pre-cleared by memset above. */ | |
14664 | parameter->data_value = NULL; | |
14665 | parameter->data_value_size = 0; | |
14666 | call_site->parameter_count++; | |
14667 | ||
216f72a1 JK |
14668 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14669 | if (attr == NULL) | |
14670 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14671 | if (attr) |
14672 | { | |
14673 | if (!attr_form_is_block (attr)) | |
14674 | complaint (&symfile_complaints, | |
216f72a1 | 14675 | _("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14676 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14677 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14678 | objfile_name (objfile)); |
96408a79 SA |
14679 | else |
14680 | { | |
14681 | parameter->data_value = DW_BLOCK (attr)->data; | |
14682 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14683 | } | |
14684 | } | |
14685 | } | |
14686 | } | |
14687 | ||
71a3c369 TT |
14688 | /* Helper function for read_variable. If DIE represents a virtual |
14689 | table, then return the type of the concrete object that is | |
14690 | associated with the virtual table. Otherwise, return NULL. */ | |
14691 | ||
14692 | static struct type * | |
14693 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14694 | { | |
14695 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14696 | if (attr == NULL) | |
14697 | return NULL; | |
14698 | ||
14699 | /* Find the type DIE. */ | |
14700 | struct die_info *type_die = NULL; | |
14701 | struct dwarf2_cu *type_cu = cu; | |
14702 | ||
14703 | if (attr_form_is_ref (attr)) | |
14704 | type_die = follow_die_ref (die, attr, &type_cu); | |
14705 | if (type_die == NULL) | |
14706 | return NULL; | |
14707 | ||
14708 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14709 | return NULL; | |
14710 | return die_containing_type (type_die, type_cu); | |
14711 | } | |
14712 | ||
14713 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14714 | ||
14715 | static void | |
14716 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14717 | { | |
14718 | struct rust_vtable_symbol *storage = NULL; | |
14719 | ||
14720 | if (cu->language == language_rust) | |
14721 | { | |
14722 | struct type *containing_type = rust_containing_type (die, cu); | |
14723 | ||
14724 | if (containing_type != NULL) | |
14725 | { | |
518817b3 | 14726 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14727 | |
14728 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14729 | struct rust_vtable_symbol); | |
14730 | initialize_objfile_symbol (storage); | |
14731 | storage->concrete_type = containing_type; | |
cf724bc9 | 14732 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14733 | } |
14734 | } | |
14735 | ||
5e2db402 | 14736 | new_symbol (die, NULL, cu, storage); |
71a3c369 TT |
14737 | } |
14738 | ||
43988095 JK |
14739 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14740 | reading .debug_rnglists. | |
14741 | Callback's type should be: | |
14742 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14743 | Return true if the attributes are present and valid, otherwise, | |
14744 | return false. */ | |
14745 | ||
14746 | template <typename Callback> | |
14747 | static bool | |
14748 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14749 | Callback &&callback) | |
14750 | { | |
ed2dc618 | 14751 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14752 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14753 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14754 | bfd *obfd = objfile->obfd; |
43988095 JK |
14755 | /* Base address selection entry. */ |
14756 | CORE_ADDR base; | |
14757 | int found_base; | |
43988095 | 14758 | const gdb_byte *buffer; |
43988095 JK |
14759 | CORE_ADDR baseaddr; |
14760 | bool overflow = false; | |
14761 | ||
14762 | found_base = cu->base_known; | |
14763 | base = cu->base_address; | |
14764 | ||
14765 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14766 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14767 | { | |
14768 | complaint (&symfile_complaints, | |
14769 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14770 | offset); | |
14771 | return false; | |
14772 | } | |
14773 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14774 | ||
14775 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14776 | ||
14777 | while (1) | |
14778 | { | |
7814882a JK |
14779 | /* Initialize it due to a false compiler warning. */ |
14780 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14781 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14782 | + dwarf2_per_objfile->rnglists.size); | |
14783 | unsigned int bytes_read; | |
14784 | ||
14785 | if (buffer == buf_end) | |
14786 | { | |
14787 | overflow = true; | |
14788 | break; | |
14789 | } | |
14790 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14791 | switch (rlet) | |
14792 | { | |
14793 | case DW_RLE_end_of_list: | |
14794 | break; | |
14795 | case DW_RLE_base_address: | |
14796 | if (buffer + cu->header.addr_size > buf_end) | |
14797 | { | |
14798 | overflow = true; | |
14799 | break; | |
14800 | } | |
14801 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14802 | found_base = 1; | |
14803 | buffer += bytes_read; | |
14804 | break; | |
14805 | case DW_RLE_start_length: | |
14806 | if (buffer + cu->header.addr_size > buf_end) | |
14807 | { | |
14808 | overflow = true; | |
14809 | break; | |
14810 | } | |
14811 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14812 | buffer += bytes_read; | |
14813 | range_end = (range_beginning | |
14814 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14815 | buffer += bytes_read; | |
14816 | if (buffer > buf_end) | |
14817 | { | |
14818 | overflow = true; | |
14819 | break; | |
14820 | } | |
14821 | break; | |
14822 | case DW_RLE_offset_pair: | |
14823 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14824 | buffer += bytes_read; | |
14825 | if (buffer > buf_end) | |
14826 | { | |
14827 | overflow = true; | |
14828 | break; | |
14829 | } | |
14830 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14831 | buffer += bytes_read; | |
14832 | if (buffer > buf_end) | |
14833 | { | |
14834 | overflow = true; | |
14835 | break; | |
14836 | } | |
14837 | break; | |
14838 | case DW_RLE_start_end: | |
14839 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14840 | { | |
14841 | overflow = true; | |
14842 | break; | |
14843 | } | |
14844 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14845 | buffer += bytes_read; | |
14846 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14847 | buffer += bytes_read; | |
14848 | break; | |
14849 | default: | |
14850 | complaint (&symfile_complaints, | |
14851 | _("Invalid .debug_rnglists data (no base address)")); | |
14852 | return false; | |
14853 | } | |
14854 | if (rlet == DW_RLE_end_of_list || overflow) | |
14855 | break; | |
14856 | if (rlet == DW_RLE_base_address) | |
14857 | continue; | |
14858 | ||
14859 | if (!found_base) | |
14860 | { | |
14861 | /* We have no valid base address for the ranges | |
14862 | data. */ | |
14863 | complaint (&symfile_complaints, | |
14864 | _("Invalid .debug_rnglists data (no base address)")); | |
14865 | return false; | |
14866 | } | |
14867 | ||
14868 | if (range_beginning > range_end) | |
14869 | { | |
14870 | /* Inverted range entries are invalid. */ | |
14871 | complaint (&symfile_complaints, | |
14872 | _("Invalid .debug_rnglists data (inverted range)")); | |
14873 | return false; | |
14874 | } | |
14875 | ||
14876 | /* Empty range entries have no effect. */ | |
14877 | if (range_beginning == range_end) | |
14878 | continue; | |
14879 | ||
14880 | range_beginning += base; | |
14881 | range_end += base; | |
14882 | ||
14883 | /* A not-uncommon case of bad debug info. | |
14884 | Don't pollute the addrmap with bad data. */ | |
14885 | if (range_beginning + baseaddr == 0 | |
14886 | && !dwarf2_per_objfile->has_section_at_zero) | |
14887 | { | |
14888 | complaint (&symfile_complaints, | |
14889 | _(".debug_rnglists entry has start address of zero" | |
14890 | " [in module %s]"), objfile_name (objfile)); | |
14891 | continue; | |
14892 | } | |
14893 | ||
14894 | callback (range_beginning, range_end); | |
14895 | } | |
14896 | ||
14897 | if (overflow) | |
14898 | { | |
14899 | complaint (&symfile_complaints, | |
14900 | _("Offset %d is not terminated " | |
14901 | "for DW_AT_ranges attribute"), | |
14902 | offset); | |
14903 | return false; | |
14904 | } | |
14905 | ||
14906 | return true; | |
14907 | } | |
14908 | ||
14909 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14910 | Callback's type should be: | |
14911 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14912 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14913 | |
43988095 | 14914 | template <typename Callback> |
43039443 | 14915 | static int |
5f46c5a5 | 14916 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14917 | Callback &&callback) |
43039443 | 14918 | { |
ed2dc618 | 14919 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14920 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14921 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14922 | struct comp_unit_head *cu_header = &cu->header; |
14923 | bfd *obfd = objfile->obfd; | |
14924 | unsigned int addr_size = cu_header->addr_size; | |
14925 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14926 | /* Base address selection entry. */ | |
14927 | CORE_ADDR base; | |
14928 | int found_base; | |
14929 | unsigned int dummy; | |
d521ce57 | 14930 | const gdb_byte *buffer; |
ff013f42 | 14931 | CORE_ADDR baseaddr; |
43039443 | 14932 | |
43988095 JK |
14933 | if (cu_header->version >= 5) |
14934 | return dwarf2_rnglists_process (offset, cu, callback); | |
14935 | ||
d00adf39 DE |
14936 | found_base = cu->base_known; |
14937 | base = cu->base_address; | |
43039443 | 14938 | |
be391dca | 14939 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14940 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
14941 | { |
14942 | complaint (&symfile_complaints, | |
14943 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14944 | offset); | |
14945 | return 0; | |
14946 | } | |
dce234bc | 14947 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14948 | |
e7030f15 | 14949 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14950 | |
43039443 JK |
14951 | while (1) |
14952 | { | |
14953 | CORE_ADDR range_beginning, range_end; | |
14954 | ||
14955 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14956 | buffer += addr_size; | |
14957 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14958 | buffer += addr_size; | |
14959 | offset += 2 * addr_size; | |
14960 | ||
14961 | /* An end of list marker is a pair of zero addresses. */ | |
14962 | if (range_beginning == 0 && range_end == 0) | |
14963 | /* Found the end of list entry. */ | |
14964 | break; | |
14965 | ||
14966 | /* Each base address selection entry is a pair of 2 values. | |
14967 | The first is the largest possible address, the second is | |
14968 | the base address. Check for a base address here. */ | |
14969 | if ((range_beginning & mask) == mask) | |
14970 | { | |
28d2bfb9 AB |
14971 | /* If we found the largest possible address, then we already |
14972 | have the base address in range_end. */ | |
14973 | base = range_end; | |
43039443 JK |
14974 | found_base = 1; |
14975 | continue; | |
14976 | } | |
14977 | ||
14978 | if (!found_base) | |
14979 | { | |
14980 | /* We have no valid base address for the ranges | |
14981 | data. */ | |
14982 | complaint (&symfile_complaints, | |
14983 | _("Invalid .debug_ranges data (no base address)")); | |
14984 | return 0; | |
14985 | } | |
14986 | ||
9277c30c UW |
14987 | if (range_beginning > range_end) |
14988 | { | |
14989 | /* Inverted range entries are invalid. */ | |
14990 | complaint (&symfile_complaints, | |
14991 | _("Invalid .debug_ranges data (inverted range)")); | |
14992 | return 0; | |
14993 | } | |
14994 | ||
14995 | /* Empty range entries have no effect. */ | |
14996 | if (range_beginning == range_end) | |
14997 | continue; | |
14998 | ||
43039443 JK |
14999 | range_beginning += base; |
15000 | range_end += base; | |
15001 | ||
01093045 DE |
15002 | /* A not-uncommon case of bad debug info. |
15003 | Don't pollute the addrmap with bad data. */ | |
15004 | if (range_beginning + baseaddr == 0 | |
15005 | && !dwarf2_per_objfile->has_section_at_zero) | |
15006 | { | |
15007 | complaint (&symfile_complaints, | |
15008 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 15009 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
15010 | continue; |
15011 | } | |
15012 | ||
5f46c5a5 JK |
15013 | callback (range_beginning, range_end); |
15014 | } | |
15015 | ||
15016 | return 1; | |
15017 | } | |
15018 | ||
15019 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
15020 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
15021 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
15022 | ||
15023 | static int | |
15024 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
15025 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
15026 | struct partial_symtab *ranges_pst) | |
15027 | { | |
518817b3 | 15028 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
15029 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
15030 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
15031 | SECT_OFF_TEXT (objfile)); | |
15032 | int low_set = 0; | |
15033 | CORE_ADDR low = 0; | |
15034 | CORE_ADDR high = 0; | |
15035 | int retval; | |
15036 | ||
15037 | retval = dwarf2_ranges_process (offset, cu, | |
15038 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
15039 | { | |
9277c30c | 15040 | if (ranges_pst != NULL) |
3e29f34a MR |
15041 | { |
15042 | CORE_ADDR lowpc; | |
15043 | CORE_ADDR highpc; | |
15044 | ||
15045 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
15046 | range_beginning + baseaddr); | |
15047 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
15048 | range_end + baseaddr); | |
15049 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
15050 | ranges_pst); | |
15051 | } | |
ff013f42 | 15052 | |
43039443 JK |
15053 | /* FIXME: This is recording everything as a low-high |
15054 | segment of consecutive addresses. We should have a | |
15055 | data structure for discontiguous block ranges | |
15056 | instead. */ | |
15057 | if (! low_set) | |
15058 | { | |
15059 | low = range_beginning; | |
15060 | high = range_end; | |
15061 | low_set = 1; | |
15062 | } | |
15063 | else | |
15064 | { | |
15065 | if (range_beginning < low) | |
15066 | low = range_beginning; | |
15067 | if (range_end > high) | |
15068 | high = range_end; | |
15069 | } | |
5f46c5a5 JK |
15070 | }); |
15071 | if (!retval) | |
15072 | return 0; | |
43039443 JK |
15073 | |
15074 | if (! low_set) | |
15075 | /* If the first entry is an end-of-list marker, the range | |
15076 | describes an empty scope, i.e. no instructions. */ | |
15077 | return 0; | |
15078 | ||
15079 | if (low_return) | |
15080 | *low_return = low; | |
15081 | if (high_return) | |
15082 | *high_return = high; | |
15083 | return 1; | |
15084 | } | |
15085 | ||
3a2b436a JK |
15086 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
15087 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 15088 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 15089 | |
3a2b436a | 15090 | static enum pc_bounds_kind |
af34e669 | 15091 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
15092 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
15093 | struct partial_symtab *pst) | |
c906108c | 15094 | { |
518817b3 SM |
15095 | struct dwarf2_per_objfile *dwarf2_per_objfile |
15096 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 15097 | struct attribute *attr; |
91da1414 | 15098 | struct attribute *attr_high; |
af34e669 DJ |
15099 | CORE_ADDR low = 0; |
15100 | CORE_ADDR high = 0; | |
e385593e | 15101 | enum pc_bounds_kind ret; |
c906108c | 15102 | |
91da1414 MW |
15103 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
15104 | if (attr_high) | |
af34e669 | 15105 | { |
e142c38c | 15106 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 15107 | if (attr) |
91da1414 | 15108 | { |
31aa7e4e JB |
15109 | low = attr_value_as_address (attr); |
15110 | high = attr_value_as_address (attr_high); | |
15111 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
15112 | high += low; | |
91da1414 | 15113 | } |
af34e669 DJ |
15114 | else |
15115 | /* Found high w/o low attribute. */ | |
e385593e | 15116 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
15117 | |
15118 | /* Found consecutive range of addresses. */ | |
3a2b436a | 15119 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 15120 | } |
c906108c | 15121 | else |
af34e669 | 15122 | { |
e142c38c | 15123 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
15124 | if (attr != NULL) |
15125 | { | |
ab435259 DE |
15126 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
15127 | We take advantage of the fact that DW_AT_ranges does not appear | |
15128 | in DW_TAG_compile_unit of DWO files. */ | |
15129 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
15130 | unsigned int ranges_offset = (DW_UNSND (attr) | |
15131 | + (need_ranges_base | |
15132 | ? cu->ranges_base | |
15133 | : 0)); | |
2e3cf129 | 15134 | |
af34e669 | 15135 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 15136 | .debug_ranges section. */ |
2e3cf129 | 15137 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 15138 | return PC_BOUNDS_INVALID; |
43039443 | 15139 | /* Found discontinuous range of addresses. */ |
3a2b436a | 15140 | ret = PC_BOUNDS_RANGES; |
af34e669 | 15141 | } |
e385593e JK |
15142 | else |
15143 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 15144 | } |
c906108c | 15145 | |
48fbe735 | 15146 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 15147 | if (high <= low) |
e385593e | 15148 | return PC_BOUNDS_INVALID; |
c906108c SS |
15149 | |
15150 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15151 | eliminate duplicate copies of functions and vtables and such. | |
15152 | The linker will arbitrarily choose one and discard the others. | |
15153 | The AT_*_pc values for such functions refer to local labels in | |
15154 | these sections. If the section from that file was discarded, the | |
15155 | labels are not in the output, so the relocs get a value of 0. | |
15156 | If this is a discarded function, mark the pc bounds as invalid, | |
15157 | so that GDB will ignore it. */ | |
72dca2f5 | 15158 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 15159 | return PC_BOUNDS_INVALID; |
c906108c SS |
15160 | |
15161 | *lowpc = low; | |
96408a79 SA |
15162 | if (highpc) |
15163 | *highpc = high; | |
af34e669 | 15164 | return ret; |
c906108c SS |
15165 | } |
15166 | ||
b084d499 JB |
15167 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
15168 | its low and high PC addresses. Do nothing if these addresses could not | |
15169 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
15170 | and HIGHPC to the high address if greater than HIGHPC. */ | |
15171 | ||
15172 | static void | |
15173 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
15174 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
15175 | struct dwarf2_cu *cu) | |
15176 | { | |
15177 | CORE_ADDR low, high; | |
15178 | struct die_info *child = die->child; | |
15179 | ||
e385593e | 15180 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 15181 | { |
325fac50 PA |
15182 | *lowpc = std::min (*lowpc, low); |
15183 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
15184 | } |
15185 | ||
15186 | /* If the language does not allow nested subprograms (either inside | |
15187 | subprograms or lexical blocks), we're done. */ | |
15188 | if (cu->language != language_ada) | |
15189 | return; | |
6e70227d | 15190 | |
b084d499 JB |
15191 | /* Check all the children of the given DIE. If it contains nested |
15192 | subprograms, then check their pc bounds. Likewise, we need to | |
15193 | check lexical blocks as well, as they may also contain subprogram | |
15194 | definitions. */ | |
15195 | while (child && child->tag) | |
15196 | { | |
15197 | if (child->tag == DW_TAG_subprogram | |
15198 | || child->tag == DW_TAG_lexical_block) | |
15199 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
15200 | child = sibling_die (child); | |
15201 | } | |
15202 | } | |
15203 | ||
fae299cd DC |
15204 | /* Get the low and high pc's represented by the scope DIE, and store |
15205 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
15206 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
15207 | ||
15208 | static void | |
15209 | get_scope_pc_bounds (struct die_info *die, | |
15210 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
15211 | struct dwarf2_cu *cu) | |
15212 | { | |
15213 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
15214 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
15215 | CORE_ADDR current_low, current_high; | |
15216 | ||
3a2b436a | 15217 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 15218 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
15219 | { |
15220 | best_low = current_low; | |
15221 | best_high = current_high; | |
15222 | } | |
15223 | else | |
15224 | { | |
15225 | struct die_info *child = die->child; | |
15226 | ||
15227 | while (child && child->tag) | |
15228 | { | |
15229 | switch (child->tag) { | |
15230 | case DW_TAG_subprogram: | |
b084d499 | 15231 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
15232 | break; |
15233 | case DW_TAG_namespace: | |
f55ee35c | 15234 | case DW_TAG_module: |
fae299cd DC |
15235 | /* FIXME: carlton/2004-01-16: Should we do this for |
15236 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
15237 | that current GCC's always emit the DIEs corresponding | |
15238 | to definitions of methods of classes as children of a | |
15239 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
15240 | the DIEs giving the declarations, which could be | |
15241 | anywhere). But I don't see any reason why the | |
15242 | standards says that they have to be there. */ | |
15243 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
15244 | ||
15245 | if (current_low != ((CORE_ADDR) -1)) | |
15246 | { | |
325fac50 PA |
15247 | best_low = std::min (best_low, current_low); |
15248 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
15249 | } |
15250 | break; | |
15251 | default: | |
0963b4bd | 15252 | /* Ignore. */ |
fae299cd DC |
15253 | break; |
15254 | } | |
15255 | ||
15256 | child = sibling_die (child); | |
15257 | } | |
15258 | } | |
15259 | ||
15260 | *lowpc = best_low; | |
15261 | *highpc = best_high; | |
15262 | } | |
15263 | ||
801e3a5b JB |
15264 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
15265 | in DIE. */ | |
380bca97 | 15266 | |
801e3a5b JB |
15267 | static void |
15268 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
15269 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
15270 | { | |
518817b3 | 15271 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 15272 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 15273 | struct attribute *attr; |
91da1414 | 15274 | struct attribute *attr_high; |
801e3a5b | 15275 | |
91da1414 MW |
15276 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
15277 | if (attr_high) | |
801e3a5b | 15278 | { |
801e3a5b JB |
15279 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
15280 | if (attr) | |
15281 | { | |
31aa7e4e JB |
15282 | CORE_ADDR low = attr_value_as_address (attr); |
15283 | CORE_ADDR high = attr_value_as_address (attr_high); | |
15284 | ||
15285 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
15286 | high += low; | |
9a619af0 | 15287 | |
3e29f34a MR |
15288 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
15289 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
15290 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
15291 | } |
15292 | } | |
15293 | ||
15294 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
15295 | if (attr) | |
15296 | { | |
ab435259 DE |
15297 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
15298 | We take advantage of the fact that DW_AT_ranges does not appear | |
15299 | in DW_TAG_compile_unit of DWO files. */ | |
15300 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
15301 | |
15302 | /* The value of the DW_AT_ranges attribute is the offset of the | |
15303 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
15304 | unsigned long offset = (DW_UNSND (attr) |
15305 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 15306 | const gdb_byte *buffer; |
801e3a5b JB |
15307 | |
15308 | /* For some target architectures, but not others, the | |
15309 | read_address function sign-extends the addresses it returns. | |
15310 | To recognize base address selection entries, we need a | |
15311 | mask. */ | |
15312 | unsigned int addr_size = cu->header.addr_size; | |
15313 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
15314 | ||
15315 | /* The base address, to which the next pair is relative. Note | |
15316 | that this 'base' is a DWARF concept: most entries in a range | |
15317 | list are relative, to reduce the number of relocs against the | |
15318 | debugging information. This is separate from this function's | |
15319 | 'baseaddr' argument, which GDB uses to relocate debugging | |
15320 | information from a shared library based on the address at | |
15321 | which the library was loaded. */ | |
d00adf39 DE |
15322 | CORE_ADDR base = cu->base_address; |
15323 | int base_known = cu->base_known; | |
801e3a5b | 15324 | |
5f46c5a5 JK |
15325 | dwarf2_ranges_process (offset, cu, |
15326 | [&] (CORE_ADDR start, CORE_ADDR end) | |
15327 | { | |
58fdfd2c JK |
15328 | start += baseaddr; |
15329 | end += baseaddr; | |
5f46c5a5 JK |
15330 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
15331 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
15332 | record_block_range (block, start, end - 1); | |
15333 | }); | |
801e3a5b JB |
15334 | } |
15335 | } | |
15336 | ||
685b1105 JK |
15337 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
15338 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 15339 | |
685b1105 JK |
15340 | static void |
15341 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 15342 | { |
38360086 | 15343 | int major, minor; |
60d5a603 JK |
15344 | |
15345 | if (cu->producer == NULL) | |
15346 | { | |
15347 | /* For unknown compilers expect their behavior is DWARF version | |
15348 | compliant. | |
15349 | ||
15350 | GCC started to support .debug_types sections by -gdwarf-4 since | |
15351 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
15352 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
15353 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
15354 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 15355 | } |
b1ffba5a | 15356 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 15357 | { |
38360086 MW |
15358 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
15359 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 15360 | } |
5230b05a WT |
15361 | else if (producer_is_icc (cu->producer, &major, &minor)) |
15362 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
15363 | else |
15364 | { | |
15365 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
15366 | compliant. */ | |
60d5a603 JK |
15367 | } |
15368 | ||
ba919b58 | 15369 | cu->checked_producer = 1; |
685b1105 | 15370 | } |
ba919b58 | 15371 | |
685b1105 JK |
15372 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
15373 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
15374 | during 4.6.0 experimental. */ | |
15375 | ||
15376 | static int | |
15377 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
15378 | { | |
15379 | if (!cu->checked_producer) | |
15380 | check_producer (cu); | |
15381 | ||
15382 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
15383 | } |
15384 | ||
15385 | /* Return the default accessibility type if it is not overriden by | |
15386 | DW_AT_accessibility. */ | |
15387 | ||
15388 | static enum dwarf_access_attribute | |
15389 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
15390 | { | |
15391 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
15392 | { | |
15393 | /* The default DWARF 2 accessibility for members is public, the default | |
15394 | accessibility for inheritance is private. */ | |
15395 | ||
15396 | if (die->tag != DW_TAG_inheritance) | |
15397 | return DW_ACCESS_public; | |
15398 | else | |
15399 | return DW_ACCESS_private; | |
15400 | } | |
15401 | else | |
15402 | { | |
15403 | /* DWARF 3+ defines the default accessibility a different way. The same | |
15404 | rules apply now for DW_TAG_inheritance as for the members and it only | |
15405 | depends on the container kind. */ | |
15406 | ||
15407 | if (die->parent->tag == DW_TAG_class_type) | |
15408 | return DW_ACCESS_private; | |
15409 | else | |
15410 | return DW_ACCESS_public; | |
15411 | } | |
15412 | } | |
15413 | ||
74ac6d43 TT |
15414 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
15415 | offset. If the attribute was not found return 0, otherwise return | |
15416 | 1. If it was found but could not properly be handled, set *OFFSET | |
15417 | to 0. */ | |
15418 | ||
15419 | static int | |
15420 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15421 | LONGEST *offset) | |
15422 | { | |
15423 | struct attribute *attr; | |
15424 | ||
15425 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15426 | if (attr != NULL) | |
15427 | { | |
15428 | *offset = 0; | |
15429 | ||
15430 | /* Note that we do not check for a section offset first here. | |
15431 | This is because DW_AT_data_member_location is new in DWARF 4, | |
15432 | so if we see it, we can assume that a constant form is really | |
15433 | a constant and not a section offset. */ | |
15434 | if (attr_form_is_constant (attr)) | |
15435 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
15436 | else if (attr_form_is_section_offset (attr)) | |
15437 | dwarf2_complex_location_expr_complaint (); | |
15438 | else if (attr_form_is_block (attr)) | |
15439 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
15440 | else | |
15441 | dwarf2_complex_location_expr_complaint (); | |
15442 | ||
15443 | return 1; | |
15444 | } | |
15445 | ||
15446 | return 0; | |
15447 | } | |
15448 | ||
c906108c SS |
15449 | /* Add an aggregate field to the field list. */ |
15450 | ||
15451 | static void | |
107d2387 | 15452 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15453 | struct dwarf2_cu *cu) |
6e70227d | 15454 | { |
518817b3 | 15455 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15456 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15457 | struct nextfield *new_field; |
15458 | struct attribute *attr; | |
15459 | struct field *fp; | |
15d034d0 | 15460 | const char *fieldname = ""; |
c906108c | 15461 | |
7d0ccb61 DJ |
15462 | if (die->tag == DW_TAG_inheritance) |
15463 | { | |
be2daae6 TT |
15464 | fip->baseclasses.emplace_back (); |
15465 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15466 | } |
15467 | else | |
15468 | { | |
be2daae6 TT |
15469 | fip->fields.emplace_back (); |
15470 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15471 | } |
be2daae6 | 15472 | |
c906108c SS |
15473 | fip->nfields++; |
15474 | ||
e142c38c | 15475 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15476 | if (attr) |
15477 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15478 | else |
15479 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15480 | if (new_field->accessibility != DW_ACCESS_public) |
15481 | fip->non_public_fields = 1; | |
60d5a603 | 15482 | |
e142c38c | 15483 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15484 | if (attr) |
15485 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15486 | else |
15487 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15488 | |
15489 | fp = &new_field->field; | |
a9a9bd0f | 15490 | |
e142c38c | 15491 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15492 | { |
74ac6d43 TT |
15493 | LONGEST offset; |
15494 | ||
a9a9bd0f | 15495 | /* Data member other than a C++ static data member. */ |
6e70227d | 15496 | |
c906108c | 15497 | /* Get type of field. */ |
e7c27a73 | 15498 | fp->type = die_type (die, cu); |
c906108c | 15499 | |
d6a843b5 | 15500 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15501 | |
c906108c | 15502 | /* Get bit size of field (zero if none). */ |
e142c38c | 15503 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15504 | if (attr) |
15505 | { | |
15506 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15507 | } | |
15508 | else | |
15509 | { | |
15510 | FIELD_BITSIZE (*fp) = 0; | |
15511 | } | |
15512 | ||
15513 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15514 | if (handle_data_member_location (die, cu, &offset)) |
15515 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15516 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15517 | if (attr) |
15518 | { | |
5e2b427d | 15519 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15520 | { |
15521 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15522 | additional bit offset from the MSB of the containing |
15523 | anonymous object to the MSB of the field. We don't | |
15524 | have to do anything special since we don't need to | |
15525 | know the size of the anonymous object. */ | |
f41f5e61 | 15526 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15527 | } |
15528 | else | |
15529 | { | |
15530 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15531 | MSB of the anonymous object, subtract off the number of |
15532 | bits from the MSB of the field to the MSB of the | |
15533 | object, and then subtract off the number of bits of | |
15534 | the field itself. The result is the bit offset of | |
15535 | the LSB of the field. */ | |
c906108c SS |
15536 | int anonymous_size; |
15537 | int bit_offset = DW_UNSND (attr); | |
15538 | ||
e142c38c | 15539 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15540 | if (attr) |
15541 | { | |
15542 | /* The size of the anonymous object containing | |
15543 | the bit field is explicit, so use the | |
15544 | indicated size (in bytes). */ | |
15545 | anonymous_size = DW_UNSND (attr); | |
15546 | } | |
15547 | else | |
15548 | { | |
15549 | /* The size of the anonymous object containing | |
15550 | the bit field must be inferred from the type | |
15551 | attribute of the data member containing the | |
15552 | bit field. */ | |
15553 | anonymous_size = TYPE_LENGTH (fp->type); | |
15554 | } | |
f41f5e61 PA |
15555 | SET_FIELD_BITPOS (*fp, |
15556 | (FIELD_BITPOS (*fp) | |
15557 | + anonymous_size * bits_per_byte | |
15558 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15559 | } |
15560 | } | |
da5b30da AA |
15561 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15562 | if (attr != NULL) | |
15563 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15564 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15565 | |
15566 | /* Get name of field. */ | |
39cbfefa DJ |
15567 | fieldname = dwarf2_name (die, cu); |
15568 | if (fieldname == NULL) | |
15569 | fieldname = ""; | |
d8151005 DJ |
15570 | |
15571 | /* The name is already allocated along with this objfile, so we don't | |
15572 | need to duplicate it for the type. */ | |
15573 | fp->name = fieldname; | |
c906108c SS |
15574 | |
15575 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15576 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15577 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15578 | { |
d48cc9dd | 15579 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15580 | new_field->accessibility = DW_ACCESS_private; |
15581 | fip->non_public_fields = 1; | |
15582 | } | |
15583 | } | |
a9a9bd0f | 15584 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15585 | { |
a9a9bd0f DC |
15586 | /* C++ static member. */ |
15587 | ||
15588 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15589 | is a declaration, but all versions of G++ as of this writing | |
15590 | (so through at least 3.2.1) incorrectly generate | |
15591 | DW_TAG_variable tags. */ | |
6e70227d | 15592 | |
ff355380 | 15593 | const char *physname; |
c906108c | 15594 | |
a9a9bd0f | 15595 | /* Get name of field. */ |
39cbfefa DJ |
15596 | fieldname = dwarf2_name (die, cu); |
15597 | if (fieldname == NULL) | |
c906108c SS |
15598 | return; |
15599 | ||
254e6b9e | 15600 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15601 | if (attr |
15602 | /* Only create a symbol if this is an external value. | |
15603 | new_symbol checks this and puts the value in the global symbol | |
15604 | table, which we want. If it is not external, new_symbol | |
15605 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15606 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15607 | { |
15608 | /* A static const member, not much different than an enum as far as | |
15609 | we're concerned, except that we can support more types. */ | |
15610 | new_symbol (die, NULL, cu); | |
15611 | } | |
15612 | ||
2df3850c | 15613 | /* Get physical name. */ |
ff355380 | 15614 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15615 | |
d8151005 DJ |
15616 | /* The name is already allocated along with this objfile, so we don't |
15617 | need to duplicate it for the type. */ | |
15618 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15619 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15620 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15621 | } |
15622 | else if (die->tag == DW_TAG_inheritance) | |
15623 | { | |
74ac6d43 | 15624 | LONGEST offset; |
d4b96c9a | 15625 | |
74ac6d43 TT |
15626 | /* C++ base class field. */ |
15627 | if (handle_data_member_location (die, cu, &offset)) | |
15628 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15629 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15630 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c | 15631 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
c906108c | 15632 | } |
2ddeaf8a TT |
15633 | else if (die->tag == DW_TAG_variant_part) |
15634 | { | |
15635 | /* process_structure_scope will treat this DIE as a union. */ | |
15636 | process_structure_scope (die, cu); | |
15637 | ||
15638 | /* The variant part is relative to the start of the enclosing | |
15639 | structure. */ | |
15640 | SET_FIELD_BITPOS (*fp, 0); | |
15641 | fp->type = get_die_type (die, cu); | |
15642 | fp->artificial = 1; | |
15643 | fp->name = "<<variant>>"; | |
15644 | } | |
15645 | else | |
15646 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15647 | } |
15648 | ||
883fd55a KS |
15649 | /* Can the type given by DIE define another type? */ |
15650 | ||
15651 | static bool | |
15652 | type_can_define_types (const struct die_info *die) | |
15653 | { | |
15654 | switch (die->tag) | |
15655 | { | |
15656 | case DW_TAG_typedef: | |
15657 | case DW_TAG_class_type: | |
15658 | case DW_TAG_structure_type: | |
15659 | case DW_TAG_union_type: | |
15660 | case DW_TAG_enumeration_type: | |
15661 | return true; | |
15662 | ||
15663 | default: | |
15664 | return false; | |
15665 | } | |
15666 | } | |
15667 | ||
15668 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15669 | |
15670 | static void | |
883fd55a KS |
15671 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15672 | struct dwarf2_cu *cu) | |
6e70227d | 15673 | { |
be2daae6 TT |
15674 | struct decl_field fp; |
15675 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15676 | |
883fd55a | 15677 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15678 | |
883fd55a | 15679 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15680 | fp.name = dwarf2_name (die, cu); |
15681 | fp.type = read_type_die (die, cu); | |
98751a41 | 15682 | |
c191a687 KS |
15683 | /* Save accessibility. */ |
15684 | enum dwarf_access_attribute accessibility; | |
15685 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15686 | if (attr != NULL) | |
15687 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15688 | else | |
15689 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15690 | switch (accessibility) | |
15691 | { | |
15692 | case DW_ACCESS_public: | |
15693 | /* The assumed value if neither private nor protected. */ | |
15694 | break; | |
15695 | case DW_ACCESS_private: | |
be2daae6 | 15696 | fp.is_private = 1; |
c191a687 KS |
15697 | break; |
15698 | case DW_ACCESS_protected: | |
be2daae6 | 15699 | fp.is_protected = 1; |
c191a687 KS |
15700 | break; |
15701 | default: | |
37534686 KS |
15702 | complaint (&symfile_complaints, |
15703 | _("Unhandled DW_AT_accessibility value (%x)"), accessibility); | |
c191a687 KS |
15704 | } |
15705 | ||
883fd55a | 15706 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15707 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15708 | else |
be2daae6 | 15709 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15710 | } |
15711 | ||
c906108c SS |
15712 | /* Create the vector of fields, and attach it to the type. */ |
15713 | ||
15714 | static void | |
fba45db2 | 15715 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15716 | struct dwarf2_cu *cu) |
c906108c SS |
15717 | { |
15718 | int nfields = fip->nfields; | |
15719 | ||
15720 | /* Record the field count, allocate space for the array of fields, | |
15721 | and create blank accessibility bitfields if necessary. */ | |
15722 | TYPE_NFIELDS (type) = nfields; | |
15723 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15724 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15725 | |
b4ba55a1 | 15726 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15727 | { |
15728 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15729 | ||
15730 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15731 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15732 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15733 | ||
15734 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15735 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15736 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15737 | ||
774b6a14 TT |
15738 | TYPE_FIELD_IGNORE_BITS (type) = |
15739 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15740 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15741 | } |
15742 | ||
15743 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15744 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15745 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15746 | { |
be2daae6 | 15747 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15748 | unsigned char *pointer; |
c906108c SS |
15749 | |
15750 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15751 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15752 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15753 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15754 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15755 | } |
15756 | ||
2ddeaf8a TT |
15757 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15758 | { | |
15759 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15760 | ||
be2daae6 | 15761 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15762 | { |
be2daae6 TT |
15763 | struct nextfield &field = fip->fields[index]; |
15764 | ||
15765 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15766 | di->discriminant_index = index; |
be2daae6 | 15767 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15768 | di->default_index = index; |
15769 | else | |
be2daae6 | 15770 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15771 | } |
15772 | } | |
15773 | ||
be2daae6 TT |
15774 | /* Copy the saved-up fields into the field vector. */ |
15775 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15776 | { |
be2daae6 TT |
15777 | struct nextfield &field |
15778 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15779 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15780 | |
be2daae6 TT |
15781 | TYPE_FIELD (type, i) = field.field; |
15782 | switch (field.accessibility) | |
c906108c | 15783 | { |
c5aa993b | 15784 | case DW_ACCESS_private: |
b4ba55a1 | 15785 | if (cu->language != language_ada) |
be2daae6 | 15786 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15787 | break; |
c906108c | 15788 | |
c5aa993b | 15789 | case DW_ACCESS_protected: |
b4ba55a1 | 15790 | if (cu->language != language_ada) |
be2daae6 | 15791 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15792 | break; |
c906108c | 15793 | |
c5aa993b JM |
15794 | case DW_ACCESS_public: |
15795 | break; | |
c906108c | 15796 | |
c5aa993b JM |
15797 | default: |
15798 | /* Unknown accessibility. Complain and treat it as public. */ | |
15799 | { | |
e2e0b3e5 | 15800 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
be2daae6 | 15801 | field.accessibility); |
c5aa993b JM |
15802 | } |
15803 | break; | |
c906108c | 15804 | } |
be2daae6 | 15805 | if (i < fip->baseclasses.size ()) |
c906108c | 15806 | { |
be2daae6 | 15807 | switch (field.virtuality) |
c906108c | 15808 | { |
c5aa993b JM |
15809 | case DW_VIRTUALITY_virtual: |
15810 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15811 | if (cu->language == language_ada) |
a73c6dcd | 15812 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15813 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15814 | break; |
c906108c SS |
15815 | } |
15816 | } | |
c906108c SS |
15817 | } |
15818 | } | |
15819 | ||
7d27a96d TT |
15820 | /* Return true if this member function is a constructor, false |
15821 | otherwise. */ | |
15822 | ||
15823 | static int | |
15824 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15825 | { | |
15826 | const char *fieldname; | |
fe978cb0 | 15827 | const char *type_name; |
7d27a96d TT |
15828 | int len; |
15829 | ||
15830 | if (die->parent == NULL) | |
15831 | return 0; | |
15832 | ||
15833 | if (die->parent->tag != DW_TAG_structure_type | |
15834 | && die->parent->tag != DW_TAG_union_type | |
15835 | && die->parent->tag != DW_TAG_class_type) | |
15836 | return 0; | |
15837 | ||
15838 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15839 | type_name = dwarf2_name (die->parent, cu); |
15840 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15841 | return 0; |
15842 | ||
15843 | len = strlen (fieldname); | |
fe978cb0 PA |
15844 | return (strncmp (fieldname, type_name, len) == 0 |
15845 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15846 | } |
15847 | ||
c906108c SS |
15848 | /* Add a member function to the proper fieldlist. */ |
15849 | ||
15850 | static void | |
107d2387 | 15851 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15852 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15853 | { |
518817b3 | 15854 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15855 | struct attribute *attr; |
c906108c | 15856 | int i; |
be2daae6 | 15857 | struct fnfieldlist *flp = nullptr; |
c906108c | 15858 | struct fn_field *fnp; |
15d034d0 | 15859 | const char *fieldname; |
f792889a | 15860 | struct type *this_type; |
60d5a603 | 15861 | enum dwarf_access_attribute accessibility; |
c906108c | 15862 | |
b4ba55a1 | 15863 | if (cu->language == language_ada) |
a73c6dcd | 15864 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15865 | |
2df3850c | 15866 | /* Get name of member function. */ |
39cbfefa DJ |
15867 | fieldname = dwarf2_name (die, cu); |
15868 | if (fieldname == NULL) | |
2df3850c | 15869 | return; |
c906108c | 15870 | |
c906108c | 15871 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15872 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15873 | { |
27bfe10e | 15874 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15875 | { |
15876 | flp = &fip->fnfieldlists[i]; | |
15877 | break; | |
15878 | } | |
c906108c SS |
15879 | } |
15880 | ||
be2daae6 TT |
15881 | /* Create a new fnfieldlist if necessary. */ |
15882 | if (flp == nullptr) | |
c906108c | 15883 | { |
be2daae6 TT |
15884 | fip->fnfieldlists.emplace_back (); |
15885 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15886 | flp->name = fieldname; |
be2daae6 | 15887 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15888 | } |
15889 | ||
be2daae6 TT |
15890 | /* Create a new member function field and add it to the vector of |
15891 | fnfieldlists. */ | |
15892 | flp->fnfields.emplace_back (); | |
15893 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15894 | |
15895 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15896 | if (cu->language == language_cplus) |
be2daae6 TT |
15897 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15898 | die, cu); | |
3da10d80 KS |
15899 | else |
15900 | { | |
1d06ead6 | 15901 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15902 | fnp->physname = physname ? physname : ""; |
15903 | } | |
15904 | ||
c906108c | 15905 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15906 | this_type = read_type_die (die, cu); |
15907 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15908 | { |
f792889a | 15909 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15910 | |
f792889a | 15911 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15912 | of the method itself (TYPE_CODE_METHOD). */ |
15913 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15914 | TYPE_TARGET_TYPE (this_type), |
15915 | TYPE_FIELDS (this_type), | |
15916 | TYPE_NFIELDS (this_type), | |
15917 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15918 | |
15919 | /* Handle static member functions. | |
c5aa993b | 15920 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15921 | member functions. G++ helps GDB by marking the first |
15922 | parameter for non-static member functions (which is the this | |
15923 | pointer) as artificial. We obtain this information from | |
15924 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15925 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15926 | fnp->voffset = VOFFSET_STATIC; |
15927 | } | |
15928 | else | |
e2e0b3e5 | 15929 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 15930 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15931 | |
15932 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15933 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15934 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15935 | |
3e43a32a MS |
15936 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15937 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15938 | |
15939 | /* Get accessibility. */ | |
e142c38c | 15940 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15941 | if (attr) |
aead7601 | 15942 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15943 | else |
15944 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15945 | switch (accessibility) | |
c906108c | 15946 | { |
60d5a603 JK |
15947 | case DW_ACCESS_private: |
15948 | fnp->is_private = 1; | |
15949 | break; | |
15950 | case DW_ACCESS_protected: | |
15951 | fnp->is_protected = 1; | |
15952 | break; | |
c906108c SS |
15953 | } |
15954 | ||
b02dede2 | 15955 | /* Check for artificial methods. */ |
e142c38c | 15956 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15957 | if (attr && DW_UNSND (attr) != 0) |
15958 | fnp->is_artificial = 1; | |
15959 | ||
7d27a96d TT |
15960 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15961 | ||
0d564a31 | 15962 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15963 | function. For older versions of GCC, this is an offset in the |
15964 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15965 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15966 | to the object address. */ |
15967 | ||
e142c38c | 15968 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15969 | if (attr) |
8e19ed76 | 15970 | { |
aec5aa8b | 15971 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15972 | { |
aec5aa8b TT |
15973 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15974 | { | |
15975 | /* Old-style GCC. */ | |
15976 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15977 | } | |
15978 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15979 | || (DW_BLOCK (attr)->size > 1 | |
15980 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15981 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15982 | { | |
aec5aa8b TT |
15983 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15984 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15985 | dwarf2_complex_location_expr_complaint (); | |
15986 | else | |
15987 | fnp->voffset /= cu->header.addr_size; | |
15988 | fnp->voffset += 2; | |
15989 | } | |
15990 | else | |
15991 | dwarf2_complex_location_expr_complaint (); | |
15992 | ||
15993 | if (!fnp->fcontext) | |
7e993ebf KS |
15994 | { |
15995 | /* If there is no `this' field and no DW_AT_containing_type, | |
15996 | we cannot actually find a base class context for the | |
15997 | vtable! */ | |
15998 | if (TYPE_NFIELDS (this_type) == 0 | |
15999 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
16000 | { | |
16001 | complaint (&symfile_complaints, | |
16002 | _("cannot determine context for virtual member " | |
9d8780f0 SM |
16003 | "function \"%s\" (offset %s)"), |
16004 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
16005 | } |
16006 | else | |
16007 | { | |
16008 | fnp->fcontext | |
16009 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
16010 | } | |
16011 | } | |
aec5aa8b | 16012 | } |
3690dd37 | 16013 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 16014 | { |
4d3c2250 | 16015 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
16016 | } |
16017 | else | |
16018 | { | |
4d3c2250 KB |
16019 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
16020 | fieldname); | |
8e19ed76 | 16021 | } |
0d564a31 | 16022 | } |
d48cc9dd DJ |
16023 | else |
16024 | { | |
16025 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
16026 | if (attr && DW_UNSND (attr)) | |
16027 | { | |
16028 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
16029 | complaint (&symfile_complaints, | |
9d8780f0 | 16030 | _("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 16031 | "but the vtable offset is not specified"), |
9d8780f0 | 16032 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 16033 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
16034 | TYPE_CPLUS_DYNAMIC (type) = 1; |
16035 | } | |
16036 | } | |
c906108c SS |
16037 | } |
16038 | ||
16039 | /* Create the vector of member function fields, and attach it to the type. */ | |
16040 | ||
16041 | static void | |
fba45db2 | 16042 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 16043 | struct dwarf2_cu *cu) |
c906108c | 16044 | { |
b4ba55a1 | 16045 | if (cu->language == language_ada) |
a73c6dcd | 16046 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 16047 | |
c906108c SS |
16048 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
16049 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
16050 | TYPE_ALLOC (type, |
16051 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 16052 | |
be2daae6 | 16053 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 16054 | { |
be2daae6 | 16055 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 16056 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 16057 | |
be2daae6 TT |
16058 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
16059 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 16060 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
16061 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
16062 | ||
16063 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
16064 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
16065 | } |
16066 | ||
be2daae6 | 16067 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
16068 | } |
16069 | ||
1168df01 JB |
16070 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
16071 | language, zero otherwise. */ | |
16072 | static int | |
16073 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
16074 | { | |
16075 | static const char vptr[] = "_vptr"; | |
16076 | ||
9c37b5ae TT |
16077 | /* Look for the C++ form of the vtable. */ |
16078 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
16079 | return 1; |
16080 | ||
16081 | return 0; | |
16082 | } | |
16083 | ||
c0dd20ea | 16084 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
16085 | functions, with the ABI-specified layout. If TYPE describes |
16086 | such a structure, smash it into a member function type. | |
61049d3b DJ |
16087 | |
16088 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
16089 | This is GCC PR debug/28767. */ | |
c0dd20ea | 16090 | |
0b92b5bb TT |
16091 | static void |
16092 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 16093 | { |
09e2d7c7 | 16094 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
16095 | |
16096 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
16097 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
16098 | return; | |
c0dd20ea DJ |
16099 | |
16100 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
16101 | if (TYPE_FIELD_NAME (type, 0) == NULL |
16102 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
16103 | || TYPE_FIELD_NAME (type, 1) == NULL | |
16104 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
16105 | return; | |
c0dd20ea DJ |
16106 | |
16107 | /* Find the type of the method. */ | |
0b92b5bb | 16108 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
16109 | if (pfn_type == NULL |
16110 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
16111 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 16112 | return; |
c0dd20ea DJ |
16113 | |
16114 | /* Look for the "this" argument. */ | |
16115 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
16116 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 16117 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 16118 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 16119 | return; |
c0dd20ea | 16120 | |
09e2d7c7 | 16121 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 16122 | new_type = alloc_type (objfile); |
09e2d7c7 | 16123 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
16124 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
16125 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 16126 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 16127 | } |
1168df01 | 16128 | |
685b1105 | 16129 | |
c906108c | 16130 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16131 | (definition) to create a type for the structure or union. Fill in |
16132 | the type's name and general properties; the members will not be | |
83655187 DE |
16133 | processed until process_structure_scope. A symbol table entry for |
16134 | the type will also not be done until process_structure_scope (assuming | |
16135 | the type has a name). | |
c906108c | 16136 | |
c767944b DJ |
16137 | NOTE: we need to call these functions regardless of whether or not the |
16138 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16139 | structure or union. This gets the type entered into our set of |
83655187 | 16140 | user defined types. */ |
c906108c | 16141 | |
f792889a | 16142 | static struct type * |
134d01f1 | 16143 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16144 | { |
518817b3 | 16145 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
16146 | struct type *type; |
16147 | struct attribute *attr; | |
15d034d0 | 16148 | const char *name; |
c906108c | 16149 | |
348e048f DE |
16150 | /* If the definition of this type lives in .debug_types, read that type. |
16151 | Don't follow DW_AT_specification though, that will take us back up | |
16152 | the chain and we want to go down. */ | |
45e58e77 | 16153 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16154 | if (attr) |
16155 | { | |
ac9ec31b | 16156 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16157 | |
ac9ec31b | 16158 | /* The type's CU may not be the same as CU. |
02142a6c | 16159 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16160 | return set_die_type (die, type, cu); |
16161 | } | |
16162 | ||
c0dd20ea | 16163 | type = alloc_type (objfile); |
c906108c | 16164 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16165 | |
39cbfefa DJ |
16166 | name = dwarf2_name (die, cu); |
16167 | if (name != NULL) | |
c906108c | 16168 | { |
987504bb | 16169 | if (cu->language == language_cplus |
c44af4eb TT |
16170 | || cu->language == language_d |
16171 | || cu->language == language_rust) | |
63d06c5c | 16172 | { |
15d034d0 | 16173 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16174 | |
16175 | /* dwarf2_full_name might have already finished building the DIE's | |
16176 | type. If so, there is no need to continue. */ | |
16177 | if (get_die_type (die, cu) != NULL) | |
16178 | return get_die_type (die, cu); | |
16179 | ||
16180 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
16181 | if (die->tag == DW_TAG_structure_type |
16182 | || die->tag == DW_TAG_class_type) | |
16183 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
16184 | } |
16185 | else | |
16186 | { | |
d8151005 DJ |
16187 | /* The name is already allocated along with this objfile, so |
16188 | we don't need to duplicate it for the type. */ | |
7d455152 | 16189 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
16190 | if (die->tag == DW_TAG_class_type) |
16191 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 16192 | } |
c906108c SS |
16193 | } |
16194 | ||
16195 | if (die->tag == DW_TAG_structure_type) | |
16196 | { | |
16197 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
16198 | } | |
16199 | else if (die->tag == DW_TAG_union_type) | |
16200 | { | |
16201 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
16202 | } | |
2ddeaf8a TT |
16203 | else if (die->tag == DW_TAG_variant_part) |
16204 | { | |
16205 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
16206 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
16207 | } | |
c906108c SS |
16208 | else |
16209 | { | |
4753d33b | 16210 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
16211 | } |
16212 | ||
0cc2414c TT |
16213 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16214 | TYPE_DECLARED_CLASS (type) = 1; | |
16215 | ||
e142c38c | 16216 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16217 | if (attr) |
16218 | { | |
155bfbd3 JB |
16219 | if (attr_form_is_constant (attr)) |
16220 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16221 | else | |
16222 | { | |
16223 | /* For the moment, dynamic type sizes are not supported | |
16224 | by GDB's struct type. The actual size is determined | |
16225 | on-demand when resolving the type of a given object, | |
16226 | so set the type's length to zero for now. Otherwise, | |
16227 | we record an expression as the length, and that expression | |
16228 | could lead to a very large value, which could eventually | |
16229 | lead to us trying to allocate that much memory when creating | |
16230 | a value of that type. */ | |
16231 | TYPE_LENGTH (type) = 0; | |
16232 | } | |
c906108c SS |
16233 | } |
16234 | else | |
16235 | { | |
16236 | TYPE_LENGTH (type) = 0; | |
16237 | } | |
16238 | ||
5230b05a | 16239 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16240 | { |
5230b05a WT |
16241 | /* ICC<14 does not output the required DW_AT_declaration on |
16242 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 16243 | TYPE_STUB (type) = 1; |
685b1105 JK |
16244 | } |
16245 | else | |
16246 | TYPE_STUB_SUPPORTED (type) = 1; | |
16247 | ||
dc718098 | 16248 | if (die_is_declaration (die, cu)) |
876cecd0 | 16249 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
16250 | else if (attr == NULL && die->child == NULL |
16251 | && producer_is_realview (cu->producer)) | |
16252 | /* RealView does not output the required DW_AT_declaration | |
16253 | on incomplete types. */ | |
16254 | TYPE_STUB (type) = 1; | |
dc718098 | 16255 | |
c906108c SS |
16256 | /* We need to add the type field to the die immediately so we don't |
16257 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16258 | type within the structure itself. */ |
1c379e20 | 16259 | set_die_type (die, type, cu); |
c906108c | 16260 | |
7e314c57 JK |
16261 | /* set_die_type should be already done. */ |
16262 | set_descriptive_type (type, die, cu); | |
16263 | ||
c767944b DJ |
16264 | return type; |
16265 | } | |
16266 | ||
2ddeaf8a TT |
16267 | /* A helper for process_structure_scope that handles a single member |
16268 | DIE. */ | |
16269 | ||
16270 | static void | |
16271 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16272 | struct field_info *fi, | |
16273 | std::vector<struct symbol *> *template_args, | |
16274 | struct dwarf2_cu *cu) | |
16275 | { | |
16276 | if (child_die->tag == DW_TAG_member | |
16277 | || child_die->tag == DW_TAG_variable | |
16278 | || child_die->tag == DW_TAG_variant_part) | |
16279 | { | |
16280 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16281 | should be a DW_TAG_member that is a declaration, but | |
16282 | all versions of G++ as of this writing (so through at | |
16283 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16284 | tags for them instead. */ | |
16285 | dwarf2_add_field (fi, child_die, cu); | |
16286 | } | |
16287 | else if (child_die->tag == DW_TAG_subprogram) | |
16288 | { | |
16289 | /* Rust doesn't have member functions in the C++ sense. | |
16290 | However, it does emit ordinary functions as children | |
16291 | of a struct DIE. */ | |
16292 | if (cu->language == language_rust) | |
16293 | read_func_scope (child_die, cu); | |
16294 | else | |
16295 | { | |
16296 | /* C++ member function. */ | |
16297 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16298 | } | |
16299 | } | |
16300 | else if (child_die->tag == DW_TAG_inheritance) | |
16301 | { | |
16302 | /* C++ base class field. */ | |
16303 | dwarf2_add_field (fi, child_die, cu); | |
16304 | } | |
16305 | else if (type_can_define_types (child_die)) | |
16306 | dwarf2_add_type_defn (fi, child_die, cu); | |
16307 | else if (child_die->tag == DW_TAG_template_type_param | |
16308 | || child_die->tag == DW_TAG_template_value_param) | |
16309 | { | |
16310 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16311 | ||
16312 | if (arg != NULL) | |
16313 | template_args->push_back (arg); | |
16314 | } | |
16315 | else if (child_die->tag == DW_TAG_variant) | |
16316 | { | |
16317 | /* In a variant we want to get the discriminant and also add a | |
16318 | field for our sole member child. */ | |
16319 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
16320 | ||
16321 | for (struct die_info *variant_child = child_die->child; | |
16322 | variant_child != NULL; | |
16323 | variant_child = sibling_die (variant_child)) | |
16324 | { | |
16325 | if (variant_child->tag == DW_TAG_member) | |
16326 | { | |
16327 | handle_struct_member_die (variant_child, type, fi, | |
16328 | template_args, cu); | |
16329 | /* Only handle the one. */ | |
16330 | break; | |
16331 | } | |
16332 | } | |
16333 | ||
16334 | /* We don't handle this but we might as well report it if we see | |
16335 | it. */ | |
16336 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
16337 | complaint (&symfile_complaints, | |
16338 | _("DW_AT_discr_list is not supported yet" | |
16339 | " - DIE at %s [in module %s]"), | |
16340 | sect_offset_str (child_die->sect_off), | |
16341 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16342 | ||
16343 | /* The first field was just added, so we can stash the | |
16344 | discriminant there. */ | |
be2daae6 | 16345 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 16346 | if (discr == NULL) |
be2daae6 | 16347 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 16348 | else |
be2daae6 | 16349 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
16350 | } |
16351 | } | |
16352 | ||
c767944b DJ |
16353 | /* Finish creating a structure or union type, including filling in |
16354 | its members and creating a symbol for it. */ | |
16355 | ||
16356 | static void | |
16357 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16358 | { | |
518817b3 | 16359 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 16360 | struct die_info *child_die; |
c767944b DJ |
16361 | struct type *type; |
16362 | ||
16363 | type = get_die_type (die, cu); | |
16364 | if (type == NULL) | |
16365 | type = read_structure_type (die, cu); | |
16366 | ||
2ddeaf8a TT |
16367 | /* When reading a DW_TAG_variant_part, we need to notice when we |
16368 | read the discriminant member, so we can record it later in the | |
16369 | discriminant_info. */ | |
16370 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
16371 | sect_offset discr_offset; | |
16372 | ||
16373 | if (is_variant_part) | |
16374 | { | |
16375 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16376 | if (discr == NULL) | |
16377 | { | |
16378 | /* Maybe it's a univariant form, an extension we support. | |
16379 | In this case arrange not to check the offset. */ | |
16380 | is_variant_part = false; | |
16381 | } | |
16382 | else if (attr_form_is_ref (discr)) | |
16383 | { | |
16384 | struct dwarf2_cu *target_cu = cu; | |
16385 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16386 | ||
16387 | discr_offset = target_die->sect_off; | |
16388 | } | |
16389 | else | |
16390 | { | |
16391 | complaint (&symfile_complaints, | |
16392 | _("DW_AT_discr does not have DIE reference form" | |
16393 | " - DIE at %s [in module %s]"), | |
16394 | sect_offset_str (die->sect_off), | |
16395 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16396 | is_variant_part = false; | |
16397 | } | |
16398 | } | |
16399 | ||
e142c38c | 16400 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16401 | { |
16402 | struct field_info fi; | |
2f4732b0 | 16403 | std::vector<struct symbol *> template_args; |
c906108c | 16404 | |
639d11d3 | 16405 | child_die = die->child; |
c906108c SS |
16406 | |
16407 | while (child_die && child_die->tag) | |
16408 | { | |
2ddeaf8a | 16409 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16410 | |
2ddeaf8a | 16411 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16412 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16413 | |
c906108c SS |
16414 | child_die = sibling_die (child_die); |
16415 | } | |
16416 | ||
34eaf542 | 16417 | /* Attach template arguments to type. */ |
2f4732b0 | 16418 | if (!template_args.empty ()) |
34eaf542 TT |
16419 | { |
16420 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2f4732b0 | 16421 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16422 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16423 | = XOBNEWVEC (&objfile->objfile_obstack, |
16424 | struct symbol *, | |
16425 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16426 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16427 | template_args.data (), |
34eaf542 TT |
16428 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16429 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16430 | } |
16431 | ||
c906108c SS |
16432 | /* Attach fields and member functions to the type. */ |
16433 | if (fi.nfields) | |
e7c27a73 | 16434 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16435 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16436 | { |
e7c27a73 | 16437 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16438 | |
c5aa993b | 16439 | /* Get the type which refers to the base class (possibly this |
c906108c | 16440 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16441 | class from the DW_AT_containing_type attribute. This use of |
16442 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16443 | |
e142c38c | 16444 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16445 | { |
e7c27a73 | 16446 | struct type *t = die_containing_type (die, cu); |
c906108c | 16447 | |
ae6ae975 | 16448 | set_type_vptr_basetype (type, t); |
c906108c SS |
16449 | if (type == t) |
16450 | { | |
c906108c SS |
16451 | int i; |
16452 | ||
16453 | /* Our own class provides vtbl ptr. */ | |
16454 | for (i = TYPE_NFIELDS (t) - 1; | |
16455 | i >= TYPE_N_BASECLASSES (t); | |
16456 | --i) | |
16457 | { | |
0d5cff50 | 16458 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16459 | |
1168df01 | 16460 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16461 | { |
ae6ae975 | 16462 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16463 | break; |
16464 | } | |
16465 | } | |
16466 | ||
16467 | /* Complain if virtual function table field not found. */ | |
16468 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 16469 | complaint (&symfile_complaints, |
3e43a32a MS |
16470 | _("virtual function table pointer " |
16471 | "not found when defining class '%s'"), | |
4d3c2250 KB |
16472 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
16473 | ""); | |
c906108c SS |
16474 | } |
16475 | else | |
16476 | { | |
ae6ae975 | 16477 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16478 | } |
16479 | } | |
f6235d4c | 16480 | else if (cu->producer |
61012eef | 16481 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16482 | { |
16483 | /* The IBM XLC compiler does not provide direct indication | |
16484 | of the containing type, but the vtable pointer is | |
16485 | always named __vfp. */ | |
16486 | ||
16487 | int i; | |
16488 | ||
16489 | for (i = TYPE_NFIELDS (type) - 1; | |
16490 | i >= TYPE_N_BASECLASSES (type); | |
16491 | --i) | |
16492 | { | |
16493 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16494 | { | |
ae6ae975 DE |
16495 | set_type_vptr_fieldno (type, i); |
16496 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16497 | break; |
16498 | } | |
16499 | } | |
16500 | } | |
c906108c | 16501 | } |
98751a41 JK |
16502 | |
16503 | /* Copy fi.typedef_field_list linked list elements content into the | |
16504 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16505 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16506 | { |
be2daae6 | 16507 | int count = fi.typedef_field_list.size (); |
98751a41 | 16508 | |
a0d7a4ff | 16509 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16510 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16511 | = ((struct decl_field *) |
be2daae6 TT |
16512 | TYPE_ALLOC (type, |
16513 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16514 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16515 | |
be2daae6 TT |
16516 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16517 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16518 | } |
c767944b | 16519 | |
883fd55a KS |
16520 | /* Copy fi.nested_types_list linked list elements content into the |
16521 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16522 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16523 | { |
be2daae6 | 16524 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16525 | |
16526 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16527 | TYPE_NESTED_TYPES_ARRAY (type) | |
16528 | = ((struct decl_field *) | |
be2daae6 TT |
16529 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16530 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16531 | |
be2daae6 TT |
16532 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16533 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16534 | } |
c906108c | 16535 | } |
63d06c5c | 16536 | |
bb5ed363 | 16537 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16538 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16539 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16540 | |
90aeadfc DC |
16541 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16542 | snapshots) has been known to create a die giving a declaration | |
16543 | for a class that has, as a child, a die giving a definition for a | |
16544 | nested class. So we have to process our children even if the | |
16545 | current die is a declaration. Normally, of course, a declaration | |
16546 | won't have any children at all. */ | |
134d01f1 | 16547 | |
ca040673 DE |
16548 | child_die = die->child; |
16549 | ||
90aeadfc DC |
16550 | while (child_die != NULL && child_die->tag) |
16551 | { | |
16552 | if (child_die->tag == DW_TAG_member | |
16553 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16554 | || child_die->tag == DW_TAG_inheritance |
16555 | || child_die->tag == DW_TAG_template_value_param | |
16556 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16557 | { |
90aeadfc | 16558 | /* Do nothing. */ |
134d01f1 | 16559 | } |
90aeadfc DC |
16560 | else |
16561 | process_die (child_die, cu); | |
134d01f1 | 16562 | |
90aeadfc | 16563 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16564 | } |
16565 | ||
fa4028e9 JB |
16566 | /* Do not consider external references. According to the DWARF standard, |
16567 | these DIEs are identified by the fact that they have no byte_size | |
16568 | attribute, and a declaration attribute. */ | |
16569 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16570 | || !die_is_declaration (die, cu)) | |
c767944b | 16571 | new_symbol (die, type, cu); |
134d01f1 DJ |
16572 | } |
16573 | ||
55426c9d JB |
16574 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16575 | update TYPE using some information only available in DIE's children. */ | |
16576 | ||
16577 | static void | |
16578 | update_enumeration_type_from_children (struct die_info *die, | |
16579 | struct type *type, | |
16580 | struct dwarf2_cu *cu) | |
16581 | { | |
60f7655a | 16582 | struct die_info *child_die; |
55426c9d JB |
16583 | int unsigned_enum = 1; |
16584 | int flag_enum = 1; | |
16585 | ULONGEST mask = 0; | |
55426c9d | 16586 | |
8268c778 | 16587 | auto_obstack obstack; |
55426c9d | 16588 | |
60f7655a DE |
16589 | for (child_die = die->child; |
16590 | child_die != NULL && child_die->tag; | |
16591 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16592 | { |
16593 | struct attribute *attr; | |
16594 | LONGEST value; | |
16595 | const gdb_byte *bytes; | |
16596 | struct dwarf2_locexpr_baton *baton; | |
16597 | const char *name; | |
60f7655a | 16598 | |
55426c9d JB |
16599 | if (child_die->tag != DW_TAG_enumerator) |
16600 | continue; | |
16601 | ||
16602 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16603 | if (attr == NULL) | |
16604 | continue; | |
16605 | ||
16606 | name = dwarf2_name (child_die, cu); | |
16607 | if (name == NULL) | |
16608 | name = "<anonymous enumerator>"; | |
16609 | ||
16610 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16611 | &value, &bytes, &baton); | |
16612 | if (value < 0) | |
16613 | { | |
16614 | unsigned_enum = 0; | |
16615 | flag_enum = 0; | |
16616 | } | |
16617 | else if ((mask & value) != 0) | |
16618 | flag_enum = 0; | |
16619 | else | |
16620 | mask |= value; | |
16621 | ||
16622 | /* If we already know that the enum type is neither unsigned, nor | |
16623 | a flag type, no need to look at the rest of the enumerates. */ | |
16624 | if (!unsigned_enum && !flag_enum) | |
16625 | break; | |
55426c9d JB |
16626 | } |
16627 | ||
16628 | if (unsigned_enum) | |
16629 | TYPE_UNSIGNED (type) = 1; | |
16630 | if (flag_enum) | |
16631 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16632 | } |
16633 | ||
134d01f1 DJ |
16634 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16635 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16636 | |
f792889a | 16637 | static struct type * |
134d01f1 | 16638 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16639 | { |
518817b3 | 16640 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16641 | struct type *type; |
c906108c | 16642 | struct attribute *attr; |
0114d602 | 16643 | const char *name; |
134d01f1 | 16644 | |
348e048f DE |
16645 | /* If the definition of this type lives in .debug_types, read that type. |
16646 | Don't follow DW_AT_specification though, that will take us back up | |
16647 | the chain and we want to go down. */ | |
45e58e77 | 16648 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16649 | if (attr) |
16650 | { | |
ac9ec31b | 16651 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16652 | |
ac9ec31b | 16653 | /* The type's CU may not be the same as CU. |
02142a6c | 16654 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16655 | return set_die_type (die, type, cu); |
16656 | } | |
16657 | ||
c906108c SS |
16658 | type = alloc_type (objfile); |
16659 | ||
16660 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16661 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16662 | if (name != NULL) |
7d455152 | 16663 | TYPE_TAG_NAME (type) = name; |
c906108c | 16664 | |
0626fc76 TT |
16665 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16666 | if (attr != NULL) | |
16667 | { | |
16668 | struct type *underlying_type = die_type (die, cu); | |
16669 | ||
16670 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16671 | } | |
16672 | ||
e142c38c | 16673 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16674 | if (attr) |
16675 | { | |
16676 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16677 | } | |
16678 | else | |
16679 | { | |
16680 | TYPE_LENGTH (type) = 0; | |
16681 | } | |
16682 | ||
137033e9 JB |
16683 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16684 | declared as private in the package spec, and then defined only | |
16685 | inside the package body. Such types are known as Taft Amendment | |
16686 | Types. When another package uses such a type, an incomplete DIE | |
16687 | may be generated by the compiler. */ | |
02eb380e | 16688 | if (die_is_declaration (die, cu)) |
876cecd0 | 16689 | TYPE_STUB (type) = 1; |
02eb380e | 16690 | |
0626fc76 TT |
16691 | /* Finish the creation of this type by using the enum's children. |
16692 | We must call this even when the underlying type has been provided | |
16693 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16694 | update_enumeration_type_from_children (die, type, cu); |
16695 | ||
0626fc76 TT |
16696 | /* If this type has an underlying type that is not a stub, then we |
16697 | may use its attributes. We always use the "unsigned" attribute | |
16698 | in this situation, because ordinarily we guess whether the type | |
16699 | is unsigned -- but the guess can be wrong and the underlying type | |
16700 | can tell us the reality. However, we defer to a local size | |
16701 | attribute if one exists, because this lets the compiler override | |
16702 | the underlying type if needed. */ | |
16703 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16704 | { | |
16705 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16706 | if (TYPE_LENGTH (type) == 0) | |
16707 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
16708 | } | |
16709 | ||
3d567982 TT |
16710 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16711 | ||
f792889a | 16712 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16713 | } |
16714 | ||
16715 | /* Given a pointer to a die which begins an enumeration, process all | |
16716 | the dies that define the members of the enumeration, and create the | |
16717 | symbol for the enumeration type. | |
16718 | ||
16719 | NOTE: We reverse the order of the element list. */ | |
16720 | ||
16721 | static void | |
16722 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16723 | { | |
f792889a | 16724 | struct type *this_type; |
134d01f1 | 16725 | |
f792889a DJ |
16726 | this_type = get_die_type (die, cu); |
16727 | if (this_type == NULL) | |
16728 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16729 | |
639d11d3 | 16730 | if (die->child != NULL) |
c906108c | 16731 | { |
9dc481d3 DE |
16732 | struct die_info *child_die; |
16733 | struct symbol *sym; | |
16734 | struct field *fields = NULL; | |
16735 | int num_fields = 0; | |
15d034d0 | 16736 | const char *name; |
9dc481d3 | 16737 | |
639d11d3 | 16738 | child_die = die->child; |
c906108c SS |
16739 | while (child_die && child_die->tag) |
16740 | { | |
16741 | if (child_die->tag != DW_TAG_enumerator) | |
16742 | { | |
e7c27a73 | 16743 | process_die (child_die, cu); |
c906108c SS |
16744 | } |
16745 | else | |
16746 | { | |
39cbfefa DJ |
16747 | name = dwarf2_name (child_die, cu); |
16748 | if (name) | |
c906108c | 16749 | { |
f792889a | 16750 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16751 | |
16752 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16753 | { | |
16754 | fields = (struct field *) | |
16755 | xrealloc (fields, | |
16756 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16757 | * sizeof (struct field)); |
c906108c SS |
16758 | } |
16759 | ||
3567439c | 16760 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16761 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16762 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16763 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16764 | ||
16765 | num_fields++; | |
16766 | } | |
16767 | } | |
16768 | ||
16769 | child_die = sibling_die (child_die); | |
16770 | } | |
16771 | ||
16772 | if (num_fields) | |
16773 | { | |
f792889a DJ |
16774 | TYPE_NFIELDS (this_type) = num_fields; |
16775 | TYPE_FIELDS (this_type) = (struct field *) | |
16776 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16777 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16778 | sizeof (struct field) * num_fields); |
b8c9b27d | 16779 | xfree (fields); |
c906108c | 16780 | } |
c906108c | 16781 | } |
134d01f1 | 16782 | |
6c83ed52 TT |
16783 | /* If we are reading an enum from a .debug_types unit, and the enum |
16784 | is a declaration, and the enum is not the signatured type in the | |
16785 | unit, then we do not want to add a symbol for it. Adding a | |
16786 | symbol would in some cases obscure the true definition of the | |
16787 | enum, giving users an incomplete type when the definition is | |
16788 | actually available. Note that we do not want to do this for all | |
16789 | enums which are just declarations, because C++0x allows forward | |
16790 | enum declarations. */ | |
3019eac3 | 16791 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16792 | && die_is_declaration (die, cu)) |
16793 | { | |
52dc124a | 16794 | struct signatured_type *sig_type; |
6c83ed52 | 16795 | |
c0f78cd4 | 16796 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16797 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16798 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16799 | return; |
16800 | } | |
16801 | ||
f792889a | 16802 | new_symbol (die, this_type, cu); |
c906108c SS |
16803 | } |
16804 | ||
16805 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16806 | the DIE's type field. For now, this only handles one dimensional | |
16807 | arrays. */ | |
16808 | ||
f792889a | 16809 | static struct type * |
e7c27a73 | 16810 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16811 | { |
518817b3 | 16812 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16813 | struct die_info *child_die; |
7e314c57 | 16814 | struct type *type; |
c906108c | 16815 | struct type *element_type, *range_type, *index_type; |
c906108c | 16816 | struct attribute *attr; |
15d034d0 | 16817 | const char *name; |
a405673c | 16818 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16819 | unsigned int bit_stride = 0; |
c906108c | 16820 | |
e7c27a73 | 16821 | element_type = die_type (die, cu); |
c906108c | 16822 | |
7e314c57 JK |
16823 | /* The die_type call above may have already set the type for this DIE. */ |
16824 | type = get_die_type (die, cu); | |
16825 | if (type) | |
16826 | return type; | |
16827 | ||
dc53a7ad JB |
16828 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16829 | if (attr != NULL) | |
a405673c JB |
16830 | { |
16831 | int stride_ok; | |
16832 | ||
16833 | byte_stride_prop | |
16834 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16835 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16836 | if (!stride_ok) | |
16837 | { | |
16838 | complaint (&symfile_complaints, | |
16839 | _("unable to read array DW_AT_byte_stride " | |
9d8780f0 SM |
16840 | " - DIE at %s [in module %s]"), |
16841 | sect_offset_str (die->sect_off), | |
518817b3 | 16842 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16843 | /* Ignore this attribute. We will likely not be able to print |
16844 | arrays of this type correctly, but there is little we can do | |
16845 | to help if we cannot read the attribute's value. */ | |
16846 | byte_stride_prop = NULL; | |
16847 | } | |
16848 | } | |
dc53a7ad JB |
16849 | |
16850 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16851 | if (attr != NULL) | |
16852 | bit_stride = DW_UNSND (attr); | |
16853 | ||
c906108c SS |
16854 | /* Irix 6.2 native cc creates array types without children for |
16855 | arrays with unspecified length. */ | |
639d11d3 | 16856 | if (die->child == NULL) |
c906108c | 16857 | { |
46bf5051 | 16858 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16859 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16860 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16861 | byte_stride_prop, bit_stride); |
f792889a | 16862 | return set_die_type (die, type, cu); |
c906108c SS |
16863 | } |
16864 | ||
791afaa2 | 16865 | std::vector<struct type *> range_types; |
639d11d3 | 16866 | child_die = die->child; |
c906108c SS |
16867 | while (child_die && child_die->tag) |
16868 | { | |
16869 | if (child_die->tag == DW_TAG_subrange_type) | |
16870 | { | |
f792889a | 16871 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16872 | |
f792889a | 16873 | if (child_type != NULL) |
a02abb62 | 16874 | { |
0963b4bd MS |
16875 | /* The range type was succesfully read. Save it for the |
16876 | array type creation. */ | |
791afaa2 | 16877 | range_types.push_back (child_type); |
a02abb62 | 16878 | } |
c906108c SS |
16879 | } |
16880 | child_die = sibling_die (child_die); | |
16881 | } | |
16882 | ||
16883 | /* Dwarf2 dimensions are output from left to right, create the | |
16884 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16885 | |
c906108c | 16886 | type = element_type; |
7ca2d3a3 DL |
16887 | |
16888 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16889 | { | |
16890 | int i = 0; | |
9a619af0 | 16891 | |
791afaa2 | 16892 | while (i < range_types.size ()) |
dc53a7ad | 16893 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16894 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16895 | } |
16896 | else | |
16897 | { | |
791afaa2 | 16898 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16899 | while (ndim-- > 0) |
dc53a7ad | 16900 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16901 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16902 | } |
c906108c | 16903 | |
f5f8a009 EZ |
16904 | /* Understand Dwarf2 support for vector types (like they occur on |
16905 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16906 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16907 | custom vendor extension. The main difference between a regular | |
16908 | array and the vector variant is that vectors are passed by value | |
16909 | to functions. */ | |
e142c38c | 16910 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16911 | if (attr) |
ea37ba09 | 16912 | make_vector_type (type); |
f5f8a009 | 16913 | |
dbc98a8b KW |
16914 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16915 | implementation may choose to implement triple vectors using this | |
16916 | attribute. */ | |
16917 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16918 | if (attr) | |
16919 | { | |
16920 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16921 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16922 | else | |
3e43a32a MS |
16923 | complaint (&symfile_complaints, |
16924 | _("DW_AT_byte_size for array type smaller " | |
16925 | "than the total size of elements")); | |
dbc98a8b KW |
16926 | } |
16927 | ||
39cbfefa DJ |
16928 | name = dwarf2_name (die, cu); |
16929 | if (name) | |
16930 | TYPE_NAME (type) = name; | |
6e70227d | 16931 | |
0963b4bd | 16932 | /* Install the type in the die. */ |
7e314c57 JK |
16933 | set_die_type (die, type, cu); |
16934 | ||
16935 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16936 | set_descriptive_type (type, die, cu); |
16937 | ||
7e314c57 | 16938 | return type; |
c906108c SS |
16939 | } |
16940 | ||
7ca2d3a3 | 16941 | static enum dwarf_array_dim_ordering |
6e70227d | 16942 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16943 | { |
16944 | struct attribute *attr; | |
16945 | ||
16946 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16947 | ||
aead7601 SM |
16948 | if (attr) |
16949 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16950 | |
0963b4bd MS |
16951 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16952 | opposite order to the dwarf2 specification, but data is still | |
16953 | laid out as per normal fortran. | |
7ca2d3a3 | 16954 | |
0963b4bd MS |
16955 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16956 | version checking. */ | |
7ca2d3a3 | 16957 | |
905e0470 PM |
16958 | if (cu->language == language_fortran |
16959 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16960 | { |
16961 | return DW_ORD_row_major; | |
16962 | } | |
16963 | ||
6e70227d | 16964 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16965 | { |
16966 | case array_column_major: | |
16967 | return DW_ORD_col_major; | |
16968 | case array_row_major: | |
16969 | default: | |
16970 | return DW_ORD_row_major; | |
16971 | }; | |
16972 | } | |
16973 | ||
72019c9c | 16974 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16975 | the DIE's type field. */ |
72019c9c | 16976 | |
f792889a | 16977 | static struct type * |
72019c9c GM |
16978 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16979 | { | |
7e314c57 JK |
16980 | struct type *domain_type, *set_type; |
16981 | struct attribute *attr; | |
f792889a | 16982 | |
7e314c57 JK |
16983 | domain_type = die_type (die, cu); |
16984 | ||
16985 | /* The die_type call above may have already set the type for this DIE. */ | |
16986 | set_type = get_die_type (die, cu); | |
16987 | if (set_type) | |
16988 | return set_type; | |
16989 | ||
16990 | set_type = create_set_type (NULL, domain_type); | |
16991 | ||
16992 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16993 | if (attr) |
16994 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16995 | |
f792889a | 16996 | return set_die_type (die, set_type, cu); |
72019c9c | 16997 | } |
7ca2d3a3 | 16998 | |
0971de02 TT |
16999 | /* A helper for read_common_block that creates a locexpr baton. |
17000 | SYM is the symbol which we are marking as computed. | |
17001 | COMMON_DIE is the DIE for the common block. | |
17002 | COMMON_LOC is the location expression attribute for the common | |
17003 | block itself. | |
17004 | MEMBER_LOC is the location expression attribute for the particular | |
17005 | member of the common block that we are processing. | |
17006 | CU is the CU from which the above come. */ | |
17007 | ||
17008 | static void | |
17009 | mark_common_block_symbol_computed (struct symbol *sym, | |
17010 | struct die_info *common_die, | |
17011 | struct attribute *common_loc, | |
17012 | struct attribute *member_loc, | |
17013 | struct dwarf2_cu *cu) | |
17014 | { | |
518817b3 SM |
17015 | struct dwarf2_per_objfile *dwarf2_per_objfile |
17016 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
17017 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
17018 | struct dwarf2_locexpr_baton *baton; | |
17019 | gdb_byte *ptr; | |
17020 | unsigned int cu_off; | |
17021 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
17022 | LONGEST offset = 0; | |
17023 | ||
17024 | gdb_assert (common_loc && member_loc); | |
17025 | gdb_assert (attr_form_is_block (common_loc)); | |
17026 | gdb_assert (attr_form_is_block (member_loc) | |
17027 | || attr_form_is_constant (member_loc)); | |
17028 | ||
8d749320 | 17029 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
17030 | baton->per_cu = cu->per_cu; |
17031 | gdb_assert (baton->per_cu); | |
17032 | ||
17033 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17034 | ||
17035 | if (attr_form_is_constant (member_loc)) | |
17036 | { | |
17037 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
17038 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
17039 | } | |
17040 | else | |
17041 | baton->size += DW_BLOCK (member_loc)->size; | |
17042 | ||
224c3ddb | 17043 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17044 | baton->data = ptr; |
17045 | ||
17046 | *ptr++ = DW_OP_call4; | |
9c541725 | 17047 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17048 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17049 | ptr += 4; | |
17050 | ||
17051 | if (attr_form_is_constant (member_loc)) | |
17052 | { | |
17053 | *ptr++ = DW_OP_addr; | |
17054 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17055 | ptr += cu->header.addr_size; | |
17056 | } | |
17057 | else | |
17058 | { | |
17059 | /* We have to copy the data here, because DW_OP_call4 will only | |
17060 | use a DW_AT_location attribute. */ | |
17061 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
17062 | ptr += DW_BLOCK (member_loc)->size; | |
17063 | } | |
17064 | ||
17065 | *ptr++ = DW_OP_plus; | |
17066 | gdb_assert (ptr - baton->data == baton->size); | |
17067 | ||
0971de02 | 17068 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17069 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17070 | } |
17071 | ||
4357ac6c TT |
17072 | /* Create appropriate locally-scoped variables for all the |
17073 | DW_TAG_common_block entries. Also create a struct common_block | |
17074 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
17075 | is used to sepate the common blocks name namespace from regular | |
17076 | variable names. */ | |
c906108c SS |
17077 | |
17078 | static void | |
e7c27a73 | 17079 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17080 | { |
0971de02 TT |
17081 | struct attribute *attr; |
17082 | ||
17083 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
17084 | if (attr) | |
17085 | { | |
17086 | /* Support the .debug_loc offsets. */ | |
17087 | if (attr_form_is_block (attr)) | |
17088 | { | |
17089 | /* Ok. */ | |
17090 | } | |
17091 | else if (attr_form_is_section_offset (attr)) | |
17092 | { | |
17093 | dwarf2_complex_location_expr_complaint (); | |
17094 | attr = NULL; | |
17095 | } | |
17096 | else | |
17097 | { | |
17098 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17099 | "common block member"); | |
17100 | attr = NULL; | |
17101 | } | |
17102 | } | |
17103 | ||
639d11d3 | 17104 | if (die->child != NULL) |
c906108c | 17105 | { |
518817b3 | 17106 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
17107 | struct die_info *child_die; |
17108 | size_t n_entries = 0, size; | |
17109 | struct common_block *common_block; | |
17110 | struct symbol *sym; | |
74ac6d43 | 17111 | |
4357ac6c TT |
17112 | for (child_die = die->child; |
17113 | child_die && child_die->tag; | |
17114 | child_die = sibling_die (child_die)) | |
17115 | ++n_entries; | |
17116 | ||
17117 | size = (sizeof (struct common_block) | |
17118 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17119 | common_block |
17120 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17121 | size); | |
4357ac6c TT |
17122 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17123 | common_block->n_entries = 0; | |
17124 | ||
17125 | for (child_die = die->child; | |
17126 | child_die && child_die->tag; | |
17127 | child_die = sibling_die (child_die)) | |
17128 | { | |
17129 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17130 | symbol scope. */ | |
e7c27a73 | 17131 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17132 | if (sym != NULL) |
17133 | { | |
17134 | struct attribute *member_loc; | |
17135 | ||
17136 | common_block->contents[common_block->n_entries++] = sym; | |
17137 | ||
17138 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17139 | cu); | |
17140 | if (member_loc) | |
17141 | { | |
17142 | /* GDB has handled this for a long time, but it is | |
17143 | not specified by DWARF. It seems to have been | |
17144 | emitted by gfortran at least as recently as: | |
17145 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
17146 | complaint (&symfile_complaints, | |
17147 | _("Variable in common block has " | |
17148 | "DW_AT_data_member_location " | |
9d8780f0 SM |
17149 | "- DIE at %s [in module %s]"), |
17150 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17151 | objfile_name (objfile)); |
0971de02 TT |
17152 | |
17153 | if (attr_form_is_section_offset (member_loc)) | |
17154 | dwarf2_complex_location_expr_complaint (); | |
17155 | else if (attr_form_is_constant (member_loc) | |
17156 | || attr_form_is_block (member_loc)) | |
17157 | { | |
17158 | if (attr) | |
17159 | mark_common_block_symbol_computed (sym, die, attr, | |
17160 | member_loc, cu); | |
17161 | } | |
17162 | else | |
17163 | dwarf2_complex_location_expr_complaint (); | |
17164 | } | |
17165 | } | |
c906108c | 17166 | } |
4357ac6c TT |
17167 | |
17168 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17169 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17170 | } |
17171 | } | |
17172 | ||
0114d602 | 17173 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17174 | |
0114d602 DJ |
17175 | static struct type * |
17176 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17177 | { |
518817b3 | 17178 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17179 | const char *previous_prefix, *name; |
9219021c | 17180 | int is_anonymous; |
0114d602 DJ |
17181 | struct type *type; |
17182 | ||
17183 | /* For extensions, reuse the type of the original namespace. */ | |
17184 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17185 | { | |
17186 | struct die_info *ext_die; | |
17187 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17188 | |
0114d602 DJ |
17189 | ext_die = dwarf2_extension (die, &ext_cu); |
17190 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17191 | |
17192 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17193 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17194 | return set_die_type (die, type, cu); |
17195 | } | |
9219021c | 17196 | |
e142c38c | 17197 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17198 | |
17199 | /* Now build the name of the current namespace. */ | |
17200 | ||
0114d602 DJ |
17201 | previous_prefix = determine_prefix (die, cu); |
17202 | if (previous_prefix[0] != '\0') | |
17203 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17204 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17205 | |
17206 | /* Create the type. */ | |
19f392bc | 17207 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
17208 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
17209 | ||
60531b24 | 17210 | return set_die_type (die, type, cu); |
0114d602 DJ |
17211 | } |
17212 | ||
22cee43f | 17213 | /* Read a namespace scope. */ |
0114d602 DJ |
17214 | |
17215 | static void | |
17216 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17217 | { | |
518817b3 | 17218 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17219 | int is_anonymous; |
9219021c | 17220 | |
5c4e30ca DC |
17221 | /* Add a symbol associated to this if we haven't seen the namespace |
17222 | before. Also, add a using directive if it's an anonymous | |
17223 | namespace. */ | |
9219021c | 17224 | |
f2f0e013 | 17225 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17226 | { |
17227 | struct type *type; | |
17228 | ||
0114d602 | 17229 | type = read_type_die (die, cu); |
e7c27a73 | 17230 | new_symbol (die, type, cu); |
5c4e30ca | 17231 | |
e8e80198 | 17232 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17233 | if (is_anonymous) |
0114d602 DJ |
17234 | { |
17235 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17236 | |
eb1e02fd | 17237 | std::vector<const char *> excludes; |
22cee43f PMR |
17238 | add_using_directive (using_directives (cu->language), |
17239 | previous_prefix, TYPE_NAME (type), NULL, | |
eb1e02fd | 17240 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17241 | } |
5c4e30ca | 17242 | } |
9219021c | 17243 | |
639d11d3 | 17244 | if (die->child != NULL) |
d9fa45fe | 17245 | { |
639d11d3 | 17246 | struct die_info *child_die = die->child; |
6e70227d | 17247 | |
d9fa45fe DC |
17248 | while (child_die && child_die->tag) |
17249 | { | |
e7c27a73 | 17250 | process_die (child_die, cu); |
d9fa45fe DC |
17251 | child_die = sibling_die (child_die); |
17252 | } | |
17253 | } | |
38d518c9 EZ |
17254 | } |
17255 | ||
f55ee35c JK |
17256 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17257 | imported module. Still we need that type as local Fortran "use ... only" | |
17258 | declaration imports depend on the created type in determine_prefix. */ | |
17259 | ||
17260 | static struct type * | |
17261 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17262 | { | |
518817b3 | 17263 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 17264 | const char *module_name; |
f55ee35c JK |
17265 | struct type *type; |
17266 | ||
17267 | module_name = dwarf2_name (die, cu); | |
17268 | if (!module_name) | |
3e43a32a | 17269 | complaint (&symfile_complaints, |
9d8780f0 SM |
17270 | _("DW_TAG_module has no name, offset %s"), |
17271 | sect_offset_str (die->sect_off)); | |
19f392bc | 17272 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
17273 | |
17274 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
17275 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
17276 | ||
17277 | return set_die_type (die, type, cu); | |
17278 | } | |
17279 | ||
5d7cb8df JK |
17280 | /* Read a Fortran module. */ |
17281 | ||
17282 | static void | |
17283 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17284 | { | |
17285 | struct die_info *child_die = die->child; | |
530e8392 KB |
17286 | struct type *type; |
17287 | ||
17288 | type = read_type_die (die, cu); | |
17289 | new_symbol (die, type, cu); | |
5d7cb8df | 17290 | |
5d7cb8df JK |
17291 | while (child_die && child_die->tag) |
17292 | { | |
17293 | process_die (child_die, cu); | |
17294 | child_die = sibling_die (child_die); | |
17295 | } | |
17296 | } | |
17297 | ||
38d518c9 EZ |
17298 | /* Return the name of the namespace represented by DIE. Set |
17299 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17300 | namespace. */ | |
17301 | ||
17302 | static const char * | |
e142c38c | 17303 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17304 | { |
17305 | struct die_info *current_die; | |
17306 | const char *name = NULL; | |
17307 | ||
17308 | /* Loop through the extensions until we find a name. */ | |
17309 | ||
17310 | for (current_die = die; | |
17311 | current_die != NULL; | |
f2f0e013 | 17312 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17313 | { |
96553a0c DE |
17314 | /* We don't use dwarf2_name here so that we can detect the absence |
17315 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17316 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17317 | |
38d518c9 EZ |
17318 | if (name != NULL) |
17319 | break; | |
17320 | } | |
17321 | ||
17322 | /* Is it an anonymous namespace? */ | |
17323 | ||
17324 | *is_anonymous = (name == NULL); | |
17325 | if (*is_anonymous) | |
2b1dbab0 | 17326 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17327 | |
17328 | return name; | |
d9fa45fe DC |
17329 | } |
17330 | ||
c906108c SS |
17331 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17332 | the user defined type vector. */ | |
17333 | ||
f792889a | 17334 | static struct type * |
e7c27a73 | 17335 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17336 | { |
518817b3 SM |
17337 | struct gdbarch *gdbarch |
17338 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 17339 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17340 | struct type *type; |
8b2dbe47 KB |
17341 | struct attribute *attr_byte_size; |
17342 | struct attribute *attr_address_class; | |
17343 | int byte_size, addr_class; | |
7e314c57 JK |
17344 | struct type *target_type; |
17345 | ||
17346 | target_type = die_type (die, cu); | |
c906108c | 17347 | |
7e314c57 JK |
17348 | /* The die_type call above may have already set the type for this DIE. */ |
17349 | type = get_die_type (die, cu); | |
17350 | if (type) | |
17351 | return type; | |
17352 | ||
17353 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17354 | |
e142c38c | 17355 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17356 | if (attr_byte_size) |
17357 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17358 | else |
8b2dbe47 KB |
17359 | byte_size = cu_header->addr_size; |
17360 | ||
e142c38c | 17361 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17362 | if (attr_address_class) |
17363 | addr_class = DW_UNSND (attr_address_class); | |
17364 | else | |
17365 | addr_class = DW_ADDR_none; | |
17366 | ||
17367 | /* If the pointer size or address class is different than the | |
17368 | default, create a type variant marked as such and set the | |
17369 | length accordingly. */ | |
17370 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 17371 | { |
5e2b427d | 17372 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17373 | { |
17374 | int type_flags; | |
17375 | ||
849957d9 | 17376 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17377 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17378 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17379 | == 0); | |
8b2dbe47 KB |
17380 | type = make_type_with_address_space (type, type_flags); |
17381 | } | |
17382 | else if (TYPE_LENGTH (type) != byte_size) | |
17383 | { | |
3e43a32a MS |
17384 | complaint (&symfile_complaints, |
17385 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 17386 | } |
6e70227d | 17387 | else |
9a619af0 MS |
17388 | { |
17389 | /* Should we also complain about unhandled address classes? */ | |
17390 | } | |
c906108c | 17391 | } |
8b2dbe47 KB |
17392 | |
17393 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 17394 | return set_die_type (die, type, cu); |
c906108c SS |
17395 | } |
17396 | ||
17397 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17398 | the user defined type vector. */ | |
17399 | ||
f792889a | 17400 | static struct type * |
e7c27a73 | 17401 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17402 | { |
17403 | struct type *type; | |
17404 | struct type *to_type; | |
17405 | struct type *domain; | |
17406 | ||
e7c27a73 DJ |
17407 | to_type = die_type (die, cu); |
17408 | domain = die_containing_type (die, cu); | |
0d5de010 | 17409 | |
7e314c57 JK |
17410 | /* The calls above may have already set the type for this DIE. */ |
17411 | type = get_die_type (die, cu); | |
17412 | if (type) | |
17413 | return type; | |
17414 | ||
0d5de010 DJ |
17415 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17416 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17417 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17418 | { | |
518817b3 SM |
17419 | struct type *new_type |
17420 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17421 | |
17422 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17423 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17424 | TYPE_VARARGS (to_type)); | |
17425 | type = lookup_methodptr_type (new_type); | |
17426 | } | |
0d5de010 DJ |
17427 | else |
17428 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17429 | |
f792889a | 17430 | return set_die_type (die, type, cu); |
c906108c SS |
17431 | } |
17432 | ||
4297a3f0 | 17433 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17434 | the user defined type vector. */ |
17435 | ||
f792889a | 17436 | static struct type * |
4297a3f0 AV |
17437 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17438 | enum type_code refcode) | |
c906108c | 17439 | { |
e7c27a73 | 17440 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17441 | struct type *type, *target_type; |
c906108c SS |
17442 | struct attribute *attr; |
17443 | ||
4297a3f0 AV |
17444 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17445 | ||
7e314c57 JK |
17446 | target_type = die_type (die, cu); |
17447 | ||
17448 | /* The die_type call above may have already set the type for this DIE. */ | |
17449 | type = get_die_type (die, cu); | |
17450 | if (type) | |
17451 | return type; | |
17452 | ||
4297a3f0 | 17453 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17454 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17455 | if (attr) |
17456 | { | |
17457 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17458 | } | |
17459 | else | |
17460 | { | |
107d2387 | 17461 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17462 | } |
f792889a | 17463 | return set_die_type (die, type, cu); |
c906108c SS |
17464 | } |
17465 | ||
cf363f18 MW |
17466 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17467 | outputs DWARF type qualifiers that apply to an array, not the | |
17468 | element type. But GDB relies on the array element type to carry | |
17469 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17470 | specification. */ | |
17471 | ||
17472 | static struct type * | |
17473 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17474 | struct type *base_type, int cnst, int voltl) | |
17475 | { | |
17476 | struct type *el_type, *inner_array; | |
17477 | ||
17478 | base_type = copy_type (base_type); | |
17479 | inner_array = base_type; | |
17480 | ||
17481 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17482 | { | |
17483 | TYPE_TARGET_TYPE (inner_array) = | |
17484 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17485 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17486 | } | |
17487 | ||
17488 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17489 | cnst |= TYPE_CONST (el_type); | |
17490 | voltl |= TYPE_VOLATILE (el_type); | |
17491 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17492 | ||
17493 | return set_die_type (die, base_type, cu); | |
17494 | } | |
17495 | ||
f792889a | 17496 | static struct type * |
e7c27a73 | 17497 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17498 | { |
f792889a | 17499 | struct type *base_type, *cv_type; |
c906108c | 17500 | |
e7c27a73 | 17501 | base_type = die_type (die, cu); |
7e314c57 JK |
17502 | |
17503 | /* The die_type call above may have already set the type for this DIE. */ | |
17504 | cv_type = get_die_type (die, cu); | |
17505 | if (cv_type) | |
17506 | return cv_type; | |
17507 | ||
2f608a3a KW |
17508 | /* In case the const qualifier is applied to an array type, the element type |
17509 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17510 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17511 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17512 | |
f792889a DJ |
17513 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17514 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17515 | } |
17516 | ||
f792889a | 17517 | static struct type * |
e7c27a73 | 17518 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17519 | { |
f792889a | 17520 | struct type *base_type, *cv_type; |
c906108c | 17521 | |
e7c27a73 | 17522 | base_type = die_type (die, cu); |
7e314c57 JK |
17523 | |
17524 | /* The die_type call above may have already set the type for this DIE. */ | |
17525 | cv_type = get_die_type (die, cu); | |
17526 | if (cv_type) | |
17527 | return cv_type; | |
17528 | ||
cf363f18 MW |
17529 | /* In case the volatile qualifier is applied to an array type, the |
17530 | element type is so qualified, not the array type (section 6.7.3 | |
17531 | of C99). */ | |
17532 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17533 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17534 | ||
f792889a DJ |
17535 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17536 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17537 | } |
17538 | ||
06d66ee9 TT |
17539 | /* Handle DW_TAG_restrict_type. */ |
17540 | ||
17541 | static struct type * | |
17542 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17543 | { | |
17544 | struct type *base_type, *cv_type; | |
17545 | ||
17546 | base_type = die_type (die, cu); | |
17547 | ||
17548 | /* The die_type call above may have already set the type for this DIE. */ | |
17549 | cv_type = get_die_type (die, cu); | |
17550 | if (cv_type) | |
17551 | return cv_type; | |
17552 | ||
17553 | cv_type = make_restrict_type (base_type); | |
17554 | return set_die_type (die, cv_type, cu); | |
17555 | } | |
17556 | ||
a2c2acaf MW |
17557 | /* Handle DW_TAG_atomic_type. */ |
17558 | ||
17559 | static struct type * | |
17560 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17561 | { | |
17562 | struct type *base_type, *cv_type; | |
17563 | ||
17564 | base_type = die_type (die, cu); | |
17565 | ||
17566 | /* The die_type call above may have already set the type for this DIE. */ | |
17567 | cv_type = get_die_type (die, cu); | |
17568 | if (cv_type) | |
17569 | return cv_type; | |
17570 | ||
17571 | cv_type = make_atomic_type (base_type); | |
17572 | return set_die_type (die, cv_type, cu); | |
17573 | } | |
17574 | ||
c906108c SS |
17575 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17576 | the user defined type vector. It isn't really a user defined type, | |
17577 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17578 | attribute to reference it. */ | |
17579 | ||
f792889a | 17580 | static struct type * |
e7c27a73 | 17581 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17582 | { |
518817b3 | 17583 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17584 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17585 | struct type *type, *range_type, *index_type, *char_type; |
17586 | struct attribute *attr; | |
17587 | unsigned int length; | |
17588 | ||
e142c38c | 17589 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17590 | if (attr) |
17591 | { | |
17592 | length = DW_UNSND (attr); | |
17593 | } | |
17594 | else | |
17595 | { | |
0963b4bd | 17596 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17597 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17598 | if (attr) |
17599 | { | |
17600 | length = DW_UNSND (attr); | |
17601 | } | |
17602 | else | |
17603 | { | |
17604 | length = 1; | |
17605 | } | |
c906108c | 17606 | } |
6ccb9162 | 17607 | |
46bf5051 | 17608 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17609 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17610 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17611 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17612 | |
f792889a | 17613 | return set_die_type (die, type, cu); |
c906108c SS |
17614 | } |
17615 | ||
4d804846 JB |
17616 | /* Assuming that DIE corresponds to a function, returns nonzero |
17617 | if the function is prototyped. */ | |
17618 | ||
17619 | static int | |
17620 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17621 | { | |
17622 | struct attribute *attr; | |
17623 | ||
17624 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17625 | if (attr && (DW_UNSND (attr) != 0)) | |
17626 | return 1; | |
17627 | ||
17628 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17629 | is only meaninful for C, but the concept also extends to other | |
17630 | languages that allow unprototyped functions (Eg: Objective C). | |
17631 | For all other languages, assume that functions are always | |
17632 | prototyped. */ | |
17633 | if (cu->language != language_c | |
17634 | && cu->language != language_objc | |
17635 | && cu->language != language_opencl) | |
17636 | return 1; | |
17637 | ||
17638 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17639 | prototyped and unprototyped functions; default to prototyped, | |
17640 | since that is more common in modern code (and RealView warns | |
17641 | about unprototyped functions). */ | |
17642 | if (producer_is_realview (cu->producer)) | |
17643 | return 1; | |
17644 | ||
17645 | return 0; | |
17646 | } | |
17647 | ||
c906108c SS |
17648 | /* Handle DIES due to C code like: |
17649 | ||
17650 | struct foo | |
c5aa993b JM |
17651 | { |
17652 | int (*funcp)(int a, long l); | |
17653 | int b; | |
17654 | }; | |
c906108c | 17655 | |
0963b4bd | 17656 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17657 | |
f792889a | 17658 | static struct type * |
e7c27a73 | 17659 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17660 | { |
518817b3 | 17661 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17662 | struct type *type; /* Type that this function returns. */ |
17663 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17664 | struct attribute *attr; |
17665 | ||
e7c27a73 | 17666 | type = die_type (die, cu); |
7e314c57 JK |
17667 | |
17668 | /* The die_type call above may have already set the type for this DIE. */ | |
17669 | ftype = get_die_type (die, cu); | |
17670 | if (ftype) | |
17671 | return ftype; | |
17672 | ||
0c8b41f1 | 17673 | ftype = lookup_function_type (type); |
c906108c | 17674 | |
4d804846 | 17675 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17676 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17677 | |
c055b101 CV |
17678 | /* Store the calling convention in the type if it's available in |
17679 | the subroutine die. Otherwise set the calling convention to | |
17680 | the default value DW_CC_normal. */ | |
17681 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17682 | if (attr) |
17683 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17684 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17685 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17686 | else | |
17687 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17688 | |
743649fd MW |
17689 | /* Record whether the function returns normally to its caller or not |
17690 | if the DWARF producer set that information. */ | |
17691 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17692 | if (attr && (DW_UNSND (attr) != 0)) | |
17693 | TYPE_NO_RETURN (ftype) = 1; | |
17694 | ||
76c10ea2 GM |
17695 | /* We need to add the subroutine type to the die immediately so |
17696 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17697 | declared as the same subroutine type. */ |
76c10ea2 | 17698 | set_die_type (die, ftype, cu); |
6e70227d | 17699 | |
639d11d3 | 17700 | if (die->child != NULL) |
c906108c | 17701 | { |
bb5ed363 | 17702 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17703 | struct die_info *child_die; |
8072405b | 17704 | int nparams, iparams; |
c906108c SS |
17705 | |
17706 | /* Count the number of parameters. | |
17707 | FIXME: GDB currently ignores vararg functions, but knows about | |
17708 | vararg member functions. */ | |
8072405b | 17709 | nparams = 0; |
639d11d3 | 17710 | child_die = die->child; |
c906108c SS |
17711 | while (child_die && child_die->tag) |
17712 | { | |
17713 | if (child_die->tag == DW_TAG_formal_parameter) | |
17714 | nparams++; | |
17715 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17716 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17717 | child_die = sibling_die (child_die); |
17718 | } | |
17719 | ||
17720 | /* Allocate storage for parameters and fill them in. */ | |
17721 | TYPE_NFIELDS (ftype) = nparams; | |
17722 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17723 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17724 | |
8072405b JK |
17725 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17726 | even if we error out during the parameters reading below. */ | |
17727 | for (iparams = 0; iparams < nparams; iparams++) | |
17728 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17729 | ||
17730 | iparams = 0; | |
639d11d3 | 17731 | child_die = die->child; |
c906108c SS |
17732 | while (child_die && child_die->tag) |
17733 | { | |
17734 | if (child_die->tag == DW_TAG_formal_parameter) | |
17735 | { | |
3ce3b1ba PA |
17736 | struct type *arg_type; |
17737 | ||
17738 | /* DWARF version 2 has no clean way to discern C++ | |
17739 | static and non-static member functions. G++ helps | |
17740 | GDB by marking the first parameter for non-static | |
17741 | member functions (which is the this pointer) as | |
17742 | artificial. We pass this information to | |
17743 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17744 | ||
17745 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17746 | 4.5 does not yet generate. */ | |
e142c38c | 17747 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17748 | if (attr) |
17749 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17750 | else | |
9c37b5ae | 17751 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17752 | arg_type = die_type (child_die, cu); |
17753 | ||
17754 | /* RealView does not mark THIS as const, which the testsuite | |
17755 | expects. GCC marks THIS as const in method definitions, | |
17756 | but not in the class specifications (GCC PR 43053). */ | |
17757 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17758 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17759 | { | |
17760 | int is_this = 0; | |
17761 | struct dwarf2_cu *arg_cu = cu; | |
17762 | const char *name = dwarf2_name (child_die, cu); | |
17763 | ||
17764 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17765 | if (attr) | |
17766 | { | |
17767 | /* If the compiler emits this, use it. */ | |
17768 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17769 | is_this = 1; | |
17770 | } | |
17771 | else if (name && strcmp (name, "this") == 0) | |
17772 | /* Function definitions will have the argument names. */ | |
17773 | is_this = 1; | |
17774 | else if (name == NULL && iparams == 0) | |
17775 | /* Declarations may not have the names, so like | |
17776 | elsewhere in GDB, assume an artificial first | |
17777 | argument is "this". */ | |
17778 | is_this = 1; | |
17779 | ||
17780 | if (is_this) | |
17781 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17782 | arg_type, 0); | |
17783 | } | |
17784 | ||
17785 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17786 | iparams++; |
17787 | } | |
17788 | child_die = sibling_die (child_die); | |
17789 | } | |
17790 | } | |
17791 | ||
76c10ea2 | 17792 | return ftype; |
c906108c SS |
17793 | } |
17794 | ||
f792889a | 17795 | static struct type * |
e7c27a73 | 17796 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17797 | { |
518817b3 | 17798 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17799 | const char *name = NULL; |
3c8e0968 | 17800 | struct type *this_type, *target_type; |
c906108c | 17801 | |
94af9270 | 17802 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17803 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17804 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17805 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17806 | target_type = die_type (die, cu); |
17807 | if (target_type != this_type) | |
17808 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17809 | else | |
17810 | { | |
17811 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17812 | spec and cause infinite loops in GDB. */ | |
17813 | complaint (&symfile_complaints, | |
17814 | _("Self-referential DW_TAG_typedef " | |
9d8780f0 SM |
17815 | "- DIE at %s [in module %s]"), |
17816 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17817 | TYPE_TARGET_TYPE (this_type) = NULL; |
17818 | } | |
f792889a | 17819 | return this_type; |
c906108c SS |
17820 | } |
17821 | ||
9b790ce7 UW |
17822 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17823 | (which may be different from NAME) to the architecture back-end to allow | |
17824 | it to guess the correct format if necessary. */ | |
17825 | ||
17826 | static struct type * | |
17827 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17828 | const char *name_hint) | |
17829 | { | |
17830 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17831 | const struct floatformat **format; | |
17832 | struct type *type; | |
17833 | ||
17834 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17835 | if (format) | |
17836 | type = init_float_type (objfile, bits, name, format); | |
17837 | else | |
77b7c781 | 17838 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17839 | |
17840 | return type; | |
17841 | } | |
17842 | ||
c906108c SS |
17843 | /* Find a representation of a given base type and install |
17844 | it in the TYPE field of the die. */ | |
17845 | ||
f792889a | 17846 | static struct type * |
e7c27a73 | 17847 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17848 | { |
518817b3 | 17849 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17850 | struct type *type; |
17851 | struct attribute *attr; | |
19f392bc | 17852 | int encoding = 0, bits = 0; |
15d034d0 | 17853 | const char *name; |
c906108c | 17854 | |
e142c38c | 17855 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17856 | if (attr) |
17857 | { | |
17858 | encoding = DW_UNSND (attr); | |
17859 | } | |
e142c38c | 17860 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17861 | if (attr) |
17862 | { | |
19f392bc | 17863 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17864 | } |
39cbfefa | 17865 | name = dwarf2_name (die, cu); |
6ccb9162 | 17866 | if (!name) |
c906108c | 17867 | { |
6ccb9162 UW |
17868 | complaint (&symfile_complaints, |
17869 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 17870 | } |
6ccb9162 UW |
17871 | |
17872 | switch (encoding) | |
c906108c | 17873 | { |
6ccb9162 UW |
17874 | case DW_ATE_address: |
17875 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17876 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17877 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17878 | break; |
17879 | case DW_ATE_boolean: | |
19f392bc | 17880 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17881 | break; |
17882 | case DW_ATE_complex_float: | |
9b790ce7 | 17883 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17884 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17885 | break; |
17886 | case DW_ATE_decimal_float: | |
19f392bc | 17887 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17888 | break; |
17889 | case DW_ATE_float: | |
9b790ce7 | 17890 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17891 | break; |
17892 | case DW_ATE_signed: | |
19f392bc | 17893 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17894 | break; |
17895 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17896 | if (cu->language == language_fortran |
17897 | && name | |
61012eef | 17898 | && startswith (name, "character(")) |
19f392bc UW |
17899 | type = init_character_type (objfile, bits, 1, name); |
17900 | else | |
17901 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17902 | break; |
17903 | case DW_ATE_signed_char: | |
6e70227d | 17904 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17905 | || cu->language == language_pascal |
17906 | || cu->language == language_fortran) | |
19f392bc UW |
17907 | type = init_character_type (objfile, bits, 0, name); |
17908 | else | |
17909 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17910 | break; |
17911 | case DW_ATE_unsigned_char: | |
868a0084 | 17912 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17913 | || cu->language == language_pascal |
c44af4eb TT |
17914 | || cu->language == language_fortran |
17915 | || cu->language == language_rust) | |
19f392bc UW |
17916 | type = init_character_type (objfile, bits, 1, name); |
17917 | else | |
17918 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17919 | break; |
75079b2b | 17920 | case DW_ATE_UTF: |
53e710ac PA |
17921 | { |
17922 | gdbarch *arch = get_objfile_arch (objfile); | |
17923 | ||
17924 | if (bits == 16) | |
17925 | type = builtin_type (arch)->builtin_char16; | |
17926 | else if (bits == 32) | |
17927 | type = builtin_type (arch)->builtin_char32; | |
17928 | else | |
17929 | { | |
17930 | complaint (&symfile_complaints, | |
17931 | _("unsupported DW_ATE_UTF bit size: '%d'"), | |
17932 | bits); | |
17933 | type = init_integer_type (objfile, bits, 1, name); | |
17934 | } | |
17935 | return set_die_type (die, type, cu); | |
17936 | } | |
75079b2b TT |
17937 | break; |
17938 | ||
6ccb9162 UW |
17939 | default: |
17940 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
17941 | dwarf_type_encoding_name (encoding)); | |
77b7c781 | 17942 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17943 | break; |
c906108c | 17944 | } |
6ccb9162 | 17945 | |
0114d602 | 17946 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17947 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17948 | |
f792889a | 17949 | return set_die_type (die, type, cu); |
c906108c SS |
17950 | } |
17951 | ||
80180f79 SA |
17952 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17953 | resulting value of the attribute into struct bound_prop. | |
17954 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17955 | ||
17956 | static int | |
17957 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17958 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17959 | { | |
17960 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17961 | struct obstack *obstack |
17962 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17963 | |
17964 | if (attr == NULL || prop == NULL) | |
17965 | return 0; | |
17966 | ||
17967 | if (attr_form_is_block (attr)) | |
17968 | { | |
8d749320 | 17969 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17970 | baton->referenced_type = NULL; |
17971 | baton->locexpr.per_cu = cu->per_cu; | |
17972 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17973 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17974 | prop->data.baton = baton; | |
17975 | prop->kind = PROP_LOCEXPR; | |
17976 | gdb_assert (prop->data.baton != NULL); | |
17977 | } | |
17978 | else if (attr_form_is_ref (attr)) | |
17979 | { | |
17980 | struct dwarf2_cu *target_cu = cu; | |
17981 | struct die_info *target_die; | |
17982 | struct attribute *target_attr; | |
17983 | ||
17984 | target_die = follow_die_ref (die, attr, &target_cu); | |
17985 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17986 | if (target_attr == NULL) |
17987 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17988 | target_cu); | |
80180f79 SA |
17989 | if (target_attr == NULL) |
17990 | return 0; | |
17991 | ||
df25ebbd | 17992 | switch (target_attr->name) |
80180f79 | 17993 | { |
df25ebbd JB |
17994 | case DW_AT_location: |
17995 | if (attr_form_is_section_offset (target_attr)) | |
17996 | { | |
8d749320 | 17997 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17998 | baton->referenced_type = die_type (target_die, target_cu); |
17999 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
18000 | prop->data.baton = baton; | |
18001 | prop->kind = PROP_LOCLIST; | |
18002 | gdb_assert (prop->data.baton != NULL); | |
18003 | } | |
18004 | else if (attr_form_is_block (target_attr)) | |
18005 | { | |
8d749320 | 18006 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
18007 | baton->referenced_type = die_type (target_die, target_cu); |
18008 | baton->locexpr.per_cu = cu->per_cu; | |
18009 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
18010 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
18011 | prop->data.baton = baton; | |
18012 | prop->kind = PROP_LOCEXPR; | |
18013 | gdb_assert (prop->data.baton != NULL); | |
18014 | } | |
18015 | else | |
18016 | { | |
18017 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18018 | "dynamic property"); | |
18019 | return 0; | |
18020 | } | |
18021 | break; | |
18022 | case DW_AT_data_member_location: | |
18023 | { | |
18024 | LONGEST offset; | |
18025 | ||
18026 | if (!handle_data_member_location (target_die, target_cu, | |
18027 | &offset)) | |
18028 | return 0; | |
18029 | ||
8d749320 | 18030 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
18031 | baton->referenced_type = read_type_die (target_die->parent, |
18032 | target_cu); | |
df25ebbd JB |
18033 | baton->offset_info.offset = offset; |
18034 | baton->offset_info.type = die_type (target_die, target_cu); | |
18035 | prop->data.baton = baton; | |
18036 | prop->kind = PROP_ADDR_OFFSET; | |
18037 | break; | |
18038 | } | |
80180f79 SA |
18039 | } |
18040 | } | |
18041 | else if (attr_form_is_constant (attr)) | |
18042 | { | |
18043 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
18044 | prop->kind = PROP_CONST; | |
18045 | } | |
18046 | else | |
18047 | { | |
18048 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18049 | dwarf2_name (die, cu)); | |
18050 | return 0; | |
18051 | } | |
18052 | ||
18053 | return 1; | |
18054 | } | |
18055 | ||
a02abb62 JB |
18056 | /* Read the given DW_AT_subrange DIE. */ |
18057 | ||
f792889a | 18058 | static struct type * |
a02abb62 JB |
18059 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18060 | { | |
4c9ad8c2 | 18061 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18062 | struct type *range_type; |
18063 | struct attribute *attr; | |
729efb13 | 18064 | struct dynamic_prop low, high; |
4fae6e18 | 18065 | int low_default_is_valid; |
c451ebe5 | 18066 | int high_bound_is_count = 0; |
15d034d0 | 18067 | const char *name; |
43bbcdc2 | 18068 | LONGEST negative_mask; |
e77813c8 | 18069 | |
4c9ad8c2 TT |
18070 | orig_base_type = die_type (die, cu); |
18071 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
18072 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18073 | creating the range type, but we use the result of check_typedef | |
18074 | when examining properties of the type. */ | |
18075 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18076 | |
7e314c57 JK |
18077 | /* The die_type call above may have already set the type for this DIE. */ |
18078 | range_type = get_die_type (die, cu); | |
18079 | if (range_type) | |
18080 | return range_type; | |
18081 | ||
729efb13 SA |
18082 | low.kind = PROP_CONST; |
18083 | high.kind = PROP_CONST; | |
18084 | high.data.const_val = 0; | |
18085 | ||
4fae6e18 JK |
18086 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18087 | omitting DW_AT_lower_bound. */ | |
18088 | switch (cu->language) | |
6e70227d | 18089 | { |
4fae6e18 JK |
18090 | case language_c: |
18091 | case language_cplus: | |
729efb13 | 18092 | low.data.const_val = 0; |
4fae6e18 JK |
18093 | low_default_is_valid = 1; |
18094 | break; | |
18095 | case language_fortran: | |
729efb13 | 18096 | low.data.const_val = 1; |
4fae6e18 JK |
18097 | low_default_is_valid = 1; |
18098 | break; | |
18099 | case language_d: | |
4fae6e18 | 18100 | case language_objc: |
c44af4eb | 18101 | case language_rust: |
729efb13 | 18102 | low.data.const_val = 0; |
4fae6e18 JK |
18103 | low_default_is_valid = (cu->header.version >= 4); |
18104 | break; | |
18105 | case language_ada: | |
18106 | case language_m2: | |
18107 | case language_pascal: | |
729efb13 | 18108 | low.data.const_val = 1; |
4fae6e18 JK |
18109 | low_default_is_valid = (cu->header.version >= 4); |
18110 | break; | |
18111 | default: | |
729efb13 | 18112 | low.data.const_val = 0; |
4fae6e18 JK |
18113 | low_default_is_valid = 0; |
18114 | break; | |
a02abb62 JB |
18115 | } |
18116 | ||
e142c38c | 18117 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 18118 | if (attr) |
11c1ba78 | 18119 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
18120 | else if (!low_default_is_valid) |
18121 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
9d8780f0 SM |
18122 | "- DIE at %s [in module %s]"), |
18123 | sect_offset_str (die->sect_off), | |
518817b3 | 18124 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 18125 | |
e142c38c | 18126 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 18127 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
18128 | { |
18129 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 18130 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 18131 | { |
c451ebe5 SA |
18132 | /* If bounds are constant do the final calculation here. */ |
18133 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
18134 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
18135 | else | |
18136 | high_bound_is_count = 1; | |
c2ff108b | 18137 | } |
e77813c8 PM |
18138 | } |
18139 | ||
18140 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18141 | without specifying a base type. | |
18142 | In that case, the base type must be set to the type of | |
18143 | the lower bound, upper bound or count, in that order, if any of these | |
18144 | three attributes references an object that has a type. | |
18145 | If no base type is found, the Dwarf-2 specifications say that | |
18146 | a signed integer type of size equal to the size of an address should | |
18147 | be used. | |
18148 | For the following C code: `extern char gdb_int [];' | |
18149 | GCC produces an empty range DIE. | |
18150 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 18151 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
18152 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
18153 | { | |
518817b3 | 18154 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
18155 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
18156 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
18157 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
18158 | ||
18159 | /* Test "int", "long int", and "long long int" objfile types, | |
18160 | and select the first one having a size above or equal to the | |
18161 | architecture address size. */ | |
18162 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
18163 | base_type = int_type; | |
18164 | else | |
18165 | { | |
18166 | int_type = objfile_type (objfile)->builtin_long; | |
18167 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
18168 | base_type = int_type; | |
18169 | else | |
18170 | { | |
18171 | int_type = objfile_type (objfile)->builtin_long_long; | |
18172 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
18173 | base_type = int_type; | |
18174 | } | |
18175 | } | |
18176 | } | |
a02abb62 | 18177 | |
dbb9c2b1 JB |
18178 | /* Normally, the DWARF producers are expected to use a signed |
18179 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18180 | But this is unfortunately not always the case, as witnessed | |
18181 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18182 | is used instead. To work around that ambiguity, we treat | |
18183 | the bounds as signed, and thus sign-extend their values, when | |
18184 | the base type is signed. */ | |
6e70227d | 18185 | negative_mask = |
66c6502d | 18186 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
18187 | if (low.kind == PROP_CONST |
18188 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
18189 | low.data.const_val |= negative_mask; | |
18190 | if (high.kind == PROP_CONST | |
18191 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
18192 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 18193 | |
729efb13 | 18194 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 18195 | |
c451ebe5 SA |
18196 | if (high_bound_is_count) |
18197 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
18198 | ||
c2ff108b JK |
18199 | /* Ada expects an empty array on no boundary attributes. */ |
18200 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 18201 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 18202 | |
39cbfefa DJ |
18203 | name = dwarf2_name (die, cu); |
18204 | if (name) | |
18205 | TYPE_NAME (range_type) = name; | |
6e70227d | 18206 | |
e142c38c | 18207 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
18208 | if (attr) |
18209 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
18210 | ||
7e314c57 JK |
18211 | set_die_type (die, range_type, cu); |
18212 | ||
18213 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18214 | set_descriptive_type (range_type, die, cu); |
18215 | ||
7e314c57 | 18216 | return range_type; |
a02abb62 | 18217 | } |
6e70227d | 18218 | |
f792889a | 18219 | static struct type * |
81a17f79 JB |
18220 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18221 | { | |
18222 | struct type *type; | |
81a17f79 | 18223 | |
518817b3 SM |
18224 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
18225 | NULL); | |
0114d602 | 18226 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 18227 | |
74a2f8ff JB |
18228 | /* In Ada, an unspecified type is typically used when the description |
18229 | of the type is defered to a different unit. When encountering | |
18230 | such a type, we treat it as a stub, and try to resolve it later on, | |
18231 | when needed. */ | |
18232 | if (cu->language == language_ada) | |
18233 | TYPE_STUB (type) = 1; | |
18234 | ||
f792889a | 18235 | return set_die_type (die, type, cu); |
81a17f79 | 18236 | } |
a02abb62 | 18237 | |
639d11d3 DC |
18238 | /* Read a single die and all its descendents. Set the die's sibling |
18239 | field to NULL; set other fields in the die correctly, and set all | |
18240 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18241 | location of the info_ptr after reading all of those dies. PARENT | |
18242 | is the parent of the die in question. */ | |
18243 | ||
18244 | static struct die_info * | |
dee91e82 | 18245 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18246 | const gdb_byte *info_ptr, |
18247 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18248 | struct die_info *parent) |
639d11d3 DC |
18249 | { |
18250 | struct die_info *die; | |
d521ce57 | 18251 | const gdb_byte *cur_ptr; |
639d11d3 DC |
18252 | int has_children; |
18253 | ||
bf6af496 | 18254 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
18255 | if (die == NULL) |
18256 | { | |
18257 | *new_info_ptr = cur_ptr; | |
18258 | return NULL; | |
18259 | } | |
93311388 | 18260 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
18261 | |
18262 | if (has_children) | |
bf6af496 | 18263 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18264 | else |
18265 | { | |
18266 | die->child = NULL; | |
18267 | *new_info_ptr = cur_ptr; | |
18268 | } | |
18269 | ||
18270 | die->sibling = NULL; | |
18271 | die->parent = parent; | |
18272 | return die; | |
18273 | } | |
18274 | ||
18275 | /* Read a die, all of its descendents, and all of its siblings; set | |
18276 | all of the fields of all of the dies correctly. Arguments are as | |
18277 | in read_die_and_children. */ | |
18278 | ||
18279 | static struct die_info * | |
bf6af496 | 18280 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18281 | const gdb_byte *info_ptr, |
18282 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18283 | struct die_info *parent) |
639d11d3 DC |
18284 | { |
18285 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18286 | const gdb_byte *cur_ptr; |
639d11d3 | 18287 | |
c906108c | 18288 | cur_ptr = info_ptr; |
639d11d3 DC |
18289 | first_die = last_sibling = NULL; |
18290 | ||
18291 | while (1) | |
c906108c | 18292 | { |
639d11d3 | 18293 | struct die_info *die |
dee91e82 | 18294 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18295 | |
1d325ec1 | 18296 | if (die == NULL) |
c906108c | 18297 | { |
639d11d3 DC |
18298 | *new_info_ptr = cur_ptr; |
18299 | return first_die; | |
c906108c | 18300 | } |
1d325ec1 DJ |
18301 | |
18302 | if (!first_die) | |
18303 | first_die = die; | |
c906108c | 18304 | else |
1d325ec1 DJ |
18305 | last_sibling->sibling = die; |
18306 | ||
18307 | last_sibling = die; | |
c906108c | 18308 | } |
c906108c SS |
18309 | } |
18310 | ||
bf6af496 DE |
18311 | /* Read a die, all of its descendents, and all of its siblings; set |
18312 | all of the fields of all of the dies correctly. Arguments are as | |
18313 | in read_die_and_children. | |
18314 | This the main entry point for reading a DIE and all its children. */ | |
18315 | ||
18316 | static struct die_info * | |
18317 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18318 | const gdb_byte *info_ptr, |
18319 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18320 | struct die_info *parent) |
18321 | { | |
18322 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18323 | new_info_ptr, parent); | |
18324 | ||
b4f54984 | 18325 | if (dwarf_die_debug) |
bf6af496 DE |
18326 | { |
18327 | fprintf_unfiltered (gdb_stdlog, | |
18328 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18329 | get_section_name (reader->die_section), |
bf6af496 DE |
18330 | (unsigned) (info_ptr - reader->die_section->buffer), |
18331 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18332 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18333 | } |
18334 | ||
18335 | return die; | |
18336 | } | |
18337 | ||
3019eac3 DE |
18338 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18339 | attributes. | |
18340 | The caller is responsible for filling in the extra attributes | |
18341 | and updating (*DIEP)->num_attrs. | |
18342 | Set DIEP to point to a newly allocated die with its information, | |
18343 | except for its child, sibling, and parent fields. | |
18344 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18345 | |
d521ce57 | 18346 | static const gdb_byte * |
3019eac3 | 18347 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18348 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18349 | int *has_children, int num_extra_attrs) |
93311388 | 18350 | { |
b64f50a1 | 18351 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18352 | struct abbrev_info *abbrev; |
18353 | struct die_info *die; | |
18354 | struct dwarf2_cu *cu = reader->cu; | |
18355 | bfd *abfd = reader->abfd; | |
18356 | ||
9c541725 | 18357 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18358 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18359 | info_ptr += bytes_read; | |
18360 | if (!abbrev_number) | |
18361 | { | |
18362 | *diep = NULL; | |
18363 | *has_children = 0; | |
18364 | return info_ptr; | |
18365 | } | |
18366 | ||
685af9cd | 18367 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18368 | if (!abbrev) |
348e048f DE |
18369 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18370 | abbrev_number, | |
18371 | bfd_get_filename (abfd)); | |
18372 | ||
3019eac3 | 18373 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18374 | die->sect_off = sect_off; |
93311388 DE |
18375 | die->tag = abbrev->tag; |
18376 | die->abbrev = abbrev_number; | |
18377 | ||
3019eac3 DE |
18378 | /* Make the result usable. |
18379 | The caller needs to update num_attrs after adding the extra | |
18380 | attributes. */ | |
93311388 DE |
18381 | die->num_attrs = abbrev->num_attrs; |
18382 | ||
18383 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18384 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18385 | info_ptr); | |
93311388 DE |
18386 | |
18387 | *diep = die; | |
18388 | *has_children = abbrev->has_children; | |
18389 | return info_ptr; | |
18390 | } | |
18391 | ||
3019eac3 DE |
18392 | /* Read a die and all its attributes. |
18393 | Set DIEP to point to a newly allocated die with its information, | |
18394 | except for its child, sibling, and parent fields. | |
18395 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18396 | ||
d521ce57 | 18397 | static const gdb_byte * |
3019eac3 | 18398 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18399 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18400 | int *has_children) |
18401 | { | |
d521ce57 | 18402 | const gdb_byte *result; |
bf6af496 DE |
18403 | |
18404 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18405 | ||
b4f54984 | 18406 | if (dwarf_die_debug) |
bf6af496 DE |
18407 | { |
18408 | fprintf_unfiltered (gdb_stdlog, | |
18409 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18410 | get_section_name (reader->die_section), |
bf6af496 DE |
18411 | (unsigned) (info_ptr - reader->die_section->buffer), |
18412 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18413 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18414 | } |
18415 | ||
18416 | return result; | |
3019eac3 | 18417 | } |
433df2d4 DE |
18418 | \f |
18419 | /* Abbreviation tables. | |
3019eac3 | 18420 | |
433df2d4 | 18421 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18422 | stored in a separate .debug_abbrev section. Before we read any |
18423 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18424 | in a hash table. */ |
18425 | ||
18426 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18427 | ||
685af9cd TT |
18428 | struct abbrev_info * |
18429 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18430 | { |
18431 | struct abbrev_info *abbrev; | |
18432 | ||
685af9cd | 18433 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18434 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18435 | |
433df2d4 DE |
18436 | return abbrev; |
18437 | } | |
18438 | ||
18439 | /* Add an abbreviation to the table. */ | |
c906108c | 18440 | |
685af9cd TT |
18441 | void |
18442 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18443 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18444 | { |
18445 | unsigned int hash_number; | |
18446 | ||
18447 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18448 | abbrev->next = m_abbrevs[hash_number]; |
18449 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18450 | } |
dee91e82 | 18451 | |
433df2d4 DE |
18452 | /* Look up an abbrev in the table. |
18453 | Returns NULL if the abbrev is not found. */ | |
18454 | ||
685af9cd TT |
18455 | struct abbrev_info * |
18456 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18457 | { |
433df2d4 DE |
18458 | unsigned int hash_number; |
18459 | struct abbrev_info *abbrev; | |
18460 | ||
18461 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18462 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18463 | |
18464 | while (abbrev) | |
18465 | { | |
18466 | if (abbrev->number == abbrev_number) | |
18467 | return abbrev; | |
18468 | abbrev = abbrev->next; | |
18469 | } | |
18470 | return NULL; | |
18471 | } | |
18472 | ||
18473 | /* Read in an abbrev table. */ | |
18474 | ||
685af9cd | 18475 | static abbrev_table_up |
ed2dc618 SM |
18476 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18477 | struct dwarf2_section_info *section, | |
9c541725 | 18478 | sect_offset sect_off) |
433df2d4 DE |
18479 | { |
18480 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18481 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18482 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18483 | struct abbrev_info *cur_abbrev; |
18484 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18485 | unsigned int abbrev_form; |
f3dd6933 DJ |
18486 | struct attr_abbrev *cur_attrs; |
18487 | unsigned int allocated_attrs; | |
c906108c | 18488 | |
685af9cd | 18489 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18490 | |
433df2d4 | 18491 | dwarf2_read_section (objfile, section); |
9c541725 | 18492 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18493 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18494 | abbrev_ptr += bytes_read; | |
18495 | ||
f3dd6933 | 18496 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18497 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18498 | |
0963b4bd | 18499 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18500 | while (abbrev_number) |
18501 | { | |
685af9cd | 18502 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18503 | |
18504 | /* read in abbrev header */ | |
18505 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18506 | cur_abbrev->tag |
18507 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18508 | abbrev_ptr += bytes_read; |
18509 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18510 | abbrev_ptr += 1; | |
18511 | ||
18512 | /* now read in declarations */ | |
22d2f3ab | 18513 | for (;;) |
c906108c | 18514 | { |
43988095 JK |
18515 | LONGEST implicit_const; |
18516 | ||
22d2f3ab JK |
18517 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18518 | abbrev_ptr += bytes_read; | |
18519 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18520 | abbrev_ptr += bytes_read; | |
43988095 JK |
18521 | if (abbrev_form == DW_FORM_implicit_const) |
18522 | { | |
18523 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18524 | &bytes_read); | |
18525 | abbrev_ptr += bytes_read; | |
18526 | } | |
18527 | else | |
18528 | { | |
18529 | /* Initialize it due to a false compiler warning. */ | |
18530 | implicit_const = -1; | |
18531 | } | |
22d2f3ab JK |
18532 | |
18533 | if (abbrev_name == 0) | |
18534 | break; | |
18535 | ||
f3dd6933 | 18536 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18537 | { |
f3dd6933 DJ |
18538 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18539 | cur_attrs | |
224c3ddb | 18540 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18541 | } |
ae038cb0 | 18542 | |
aead7601 SM |
18543 | cur_attrs[cur_abbrev->num_attrs].name |
18544 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18545 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18546 | = (enum dwarf_form) abbrev_form; |
43988095 | 18547 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18548 | ++cur_abbrev->num_attrs; |
c906108c SS |
18549 | } |
18550 | ||
8d749320 SM |
18551 | cur_abbrev->attrs = |
18552 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18553 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18554 | memcpy (cur_abbrev->attrs, cur_attrs, |
18555 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18556 | ||
685af9cd | 18557 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18558 | |
18559 | /* Get next abbreviation. | |
18560 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18561 | always properly terminated with an abbrev number of 0. |
18562 | Exit loop if we encounter an abbreviation which we have | |
18563 | already read (which means we are about to read the abbreviations | |
18564 | for the next compile unit) or if the end of the abbreviation | |
18565 | table is reached. */ | |
433df2d4 | 18566 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18567 | break; |
18568 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18569 | abbrev_ptr += bytes_read; | |
685af9cd | 18570 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18571 | break; |
18572 | } | |
f3dd6933 DJ |
18573 | |
18574 | xfree (cur_attrs); | |
433df2d4 | 18575 | return abbrev_table; |
c906108c SS |
18576 | } |
18577 | ||
72bf9492 DJ |
18578 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18579 | symbol for. */ | |
18580 | ||
18581 | static int | |
18582 | is_type_tag_for_partial (int tag) | |
18583 | { | |
18584 | switch (tag) | |
18585 | { | |
18586 | #if 0 | |
18587 | /* Some types that would be reasonable to generate partial symbols for, | |
18588 | that we don't at present. */ | |
18589 | case DW_TAG_array_type: | |
18590 | case DW_TAG_file_type: | |
18591 | case DW_TAG_ptr_to_member_type: | |
18592 | case DW_TAG_set_type: | |
18593 | case DW_TAG_string_type: | |
18594 | case DW_TAG_subroutine_type: | |
18595 | #endif | |
18596 | case DW_TAG_base_type: | |
18597 | case DW_TAG_class_type: | |
680b30c7 | 18598 | case DW_TAG_interface_type: |
72bf9492 DJ |
18599 | case DW_TAG_enumeration_type: |
18600 | case DW_TAG_structure_type: | |
18601 | case DW_TAG_subrange_type: | |
18602 | case DW_TAG_typedef: | |
18603 | case DW_TAG_union_type: | |
18604 | return 1; | |
18605 | default: | |
18606 | return 0; | |
18607 | } | |
18608 | } | |
18609 | ||
18610 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18611 | ||
18612 | static struct partial_die_info * | |
dee91e82 | 18613 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18614 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18615 | { |
dee91e82 | 18616 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18617 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18618 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18619 | unsigned int bytes_read; |
5afb4e99 | 18620 | unsigned int load_all = 0; |
72bf9492 DJ |
18621 | int nesting_level = 1; |
18622 | ||
18623 | parent_die = NULL; | |
18624 | last_die = NULL; | |
18625 | ||
7adf1e79 DE |
18626 | gdb_assert (cu->per_cu != NULL); |
18627 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18628 | load_all = 1; |
18629 | ||
72bf9492 DJ |
18630 | cu->partial_dies |
18631 | = htab_create_alloc_ex (cu->header.length / 12, | |
18632 | partial_die_hash, | |
18633 | partial_die_eq, | |
18634 | NULL, | |
18635 | &cu->comp_unit_obstack, | |
18636 | hashtab_obstack_allocate, | |
18637 | dummy_obstack_deallocate); | |
18638 | ||
72bf9492 DJ |
18639 | while (1) |
18640 | { | |
685af9cd | 18641 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18642 | |
18643 | /* A NULL abbrev means the end of a series of children. */ | |
18644 | if (abbrev == NULL) | |
18645 | { | |
18646 | if (--nesting_level == 0) | |
cd9983dd YQ |
18647 | return first_die; |
18648 | ||
72bf9492 DJ |
18649 | info_ptr += bytes_read; |
18650 | last_die = parent_die; | |
18651 | parent_die = parent_die->die_parent; | |
18652 | continue; | |
18653 | } | |
18654 | ||
98bfdba5 PA |
18655 | /* Check for template arguments. We never save these; if |
18656 | they're seen, we just mark the parent, and go on our way. */ | |
18657 | if (parent_die != NULL | |
18658 | && cu->language == language_cplus | |
18659 | && (abbrev->tag == DW_TAG_template_type_param | |
18660 | || abbrev->tag == DW_TAG_template_value_param)) | |
18661 | { | |
18662 | parent_die->has_template_arguments = 1; | |
18663 | ||
18664 | if (!load_all) | |
18665 | { | |
18666 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18667 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18668 | continue; |
18669 | } | |
18670 | } | |
18671 | ||
0d99eb77 | 18672 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18673 | Skip their other children. */ |
18674 | if (!load_all | |
18675 | && cu->language == language_cplus | |
18676 | && parent_die != NULL | |
18677 | && parent_die->tag == DW_TAG_subprogram) | |
18678 | { | |
dee91e82 | 18679 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18680 | continue; |
18681 | } | |
18682 | ||
5afb4e99 DJ |
18683 | /* Check whether this DIE is interesting enough to save. Normally |
18684 | we would not be interested in members here, but there may be | |
18685 | later variables referencing them via DW_AT_specification (for | |
18686 | static members). */ | |
18687 | if (!load_all | |
18688 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18689 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18690 | && abbrev->tag != DW_TAG_enumerator |
18691 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18692 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18693 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18694 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18695 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18696 | && abbrev->tag != DW_TAG_module |
95554aad | 18697 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18698 | && abbrev->tag != DW_TAG_imported_unit |
18699 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18700 | { |
18701 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18702 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18703 | continue; |
18704 | } | |
18705 | ||
6f06d47b YQ |
18706 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18707 | abbrev); | |
cd9983dd | 18708 | |
48fbe735 | 18709 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18710 | |
18711 | /* This two-pass algorithm for processing partial symbols has a | |
18712 | high cost in cache pressure. Thus, handle some simple cases | |
18713 | here which cover the majority of C partial symbols. DIEs | |
18714 | which neither have specification tags in them, nor could have | |
18715 | specification tags elsewhere pointing at them, can simply be | |
18716 | processed and discarded. | |
18717 | ||
18718 | This segment is also optional; scan_partial_symbols and | |
18719 | add_partial_symbol will handle these DIEs if we chain | |
18720 | them in normally. When compilers which do not emit large | |
18721 | quantities of duplicate debug information are more common, | |
18722 | this code can probably be removed. */ | |
18723 | ||
18724 | /* Any complete simple types at the top level (pretty much all | |
18725 | of them, for a language without namespaces), can be processed | |
18726 | directly. */ | |
18727 | if (parent_die == NULL | |
cd9983dd YQ |
18728 | && pdi.has_specification == 0 |
18729 | && pdi.is_declaration == 0 | |
18730 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18731 | || pdi.tag == DW_TAG_base_type | |
18732 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18733 | { |
cd9983dd YQ |
18734 | if (building_psymtab && pdi.name != NULL) |
18735 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
72bf9492 | 18736 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 18737 | &objfile->static_psymbols, |
1762568f | 18738 | 0, cu->language, objfile); |
cd9983dd | 18739 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18740 | continue; |
18741 | } | |
18742 | ||
d8228535 JK |
18743 | /* The exception for DW_TAG_typedef with has_children above is |
18744 | a workaround of GCC PR debug/47510. In the case of this complaint | |
18745 | type_name_no_tag_or_error will error on such types later. | |
18746 | ||
18747 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18748 | it could not find the child DIEs referenced later, this is checked | |
18749 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18750 | ||
cd9983dd | 18751 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
d8228535 JK |
18752 | complaint (&symfile_complaints, |
18753 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
9d8780f0 | 18754 | "- DIE at %s [in module %s]"), |
cd9983dd | 18755 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18756 | |
72bf9492 DJ |
18757 | /* If we're at the second level, and we're an enumerator, and |
18758 | our parent has no specification (meaning possibly lives in a | |
18759 | namespace elsewhere), then we can add the partial symbol now | |
18760 | instead of queueing it. */ | |
cd9983dd | 18761 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18762 | && parent_die != NULL |
18763 | && parent_die->die_parent == NULL | |
18764 | && parent_die->tag == DW_TAG_enumeration_type | |
18765 | && parent_die->has_specification == 0) | |
18766 | { | |
cd9983dd | 18767 | if (pdi.name == NULL) |
3e43a32a MS |
18768 | complaint (&symfile_complaints, |
18769 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 18770 | else if (building_psymtab) |
cd9983dd | 18771 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
72bf9492 | 18772 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 18773 | cu->language == language_cplus |
bb5ed363 DE |
18774 | ? &objfile->global_psymbols |
18775 | : &objfile->static_psymbols, | |
1762568f | 18776 | 0, cu->language, objfile); |
72bf9492 | 18777 | |
cd9983dd | 18778 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18779 | continue; |
18780 | } | |
18781 | ||
cd9983dd | 18782 | struct partial_die_info *part_die |
6f06d47b | 18783 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18784 | |
72bf9492 DJ |
18785 | /* We'll save this DIE so link it in. */ |
18786 | part_die->die_parent = parent_die; | |
18787 | part_die->die_sibling = NULL; | |
18788 | part_die->die_child = NULL; | |
18789 | ||
18790 | if (last_die && last_die == parent_die) | |
18791 | last_die->die_child = part_die; | |
18792 | else if (last_die) | |
18793 | last_die->die_sibling = part_die; | |
18794 | ||
18795 | last_die = part_die; | |
18796 | ||
18797 | if (first_die == NULL) | |
18798 | first_die = part_die; | |
18799 | ||
18800 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18801 | find interesting need to be in the hash table, because we | |
18802 | also have the parent/sibling/child chains; only those that we | |
18803 | might refer to by offset later during partial symbol reading. | |
18804 | ||
18805 | For now this means things that might have be the target of a | |
18806 | DW_AT_specification, DW_AT_abstract_origin, or | |
18807 | DW_AT_extension. DW_AT_extension will refer only to | |
18808 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18809 | many things under the function DIE, but we do not recurse | |
18810 | into function DIEs during partial symbol reading) and | |
18811 | possibly variables as well; DW_AT_specification refers to | |
18812 | declarations. Declarations ought to have the DW_AT_declaration | |
18813 | flag. It happens that GCC forgets to put it in sometimes, but | |
18814 | only for functions, not for types. | |
18815 | ||
18816 | Adding more things than necessary to the hash table is harmless | |
18817 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18818 | wasted time in find_partial_die, when we reread the compilation |
18819 | unit with load_all_dies set. */ | |
72bf9492 | 18820 | |
5afb4e99 | 18821 | if (load_all |
72929c62 | 18822 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18823 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18824 | || abbrev->tag == DW_TAG_variable |
18825 | || abbrev->tag == DW_TAG_namespace | |
18826 | || part_die->is_declaration) | |
18827 | { | |
18828 | void **slot; | |
18829 | ||
18830 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18831 | to_underlying (part_die->sect_off), |
18832 | INSERT); | |
72bf9492 DJ |
18833 | *slot = part_die; |
18834 | } | |
18835 | ||
72bf9492 | 18836 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18837 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18838 | languages we have to, so that we can get at method physnames |
18839 | to infer fully qualified class names, for DW_AT_specification, | |
18840 | and for C++ template arguments. For C++, we also look one level | |
18841 | inside functions to find template arguments (if the name of the | |
18842 | function does not already contain the template arguments). | |
bc30ff58 JB |
18843 | |
18844 | For Ada, we need to scan the children of subprograms and lexical | |
18845 | blocks as well because Ada allows the definition of nested | |
18846 | entities that could be interesting for the debugger, such as | |
18847 | nested subprograms for instance. */ | |
72bf9492 | 18848 | if (last_die->has_children |
5afb4e99 DJ |
18849 | && (load_all |
18850 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18851 | || last_die->tag == DW_TAG_module |
72bf9492 | 18852 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18853 | || (cu->language == language_cplus |
18854 | && last_die->tag == DW_TAG_subprogram | |
18855 | && (last_die->name == NULL | |
18856 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18857 | || (cu->language != language_c |
18858 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18859 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18860 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18861 | || last_die->tag == DW_TAG_union_type)) |
18862 | || (cu->language == language_ada | |
18863 | && (last_die->tag == DW_TAG_subprogram | |
18864 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18865 | { |
18866 | nesting_level++; | |
18867 | parent_die = last_die; | |
18868 | continue; | |
18869 | } | |
18870 | ||
18871 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18872 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18873 | |
18874 | /* Back to the top, do it again. */ | |
18875 | } | |
18876 | } | |
18877 | ||
6f06d47b YQ |
18878 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18879 | struct abbrev_info *abbrev) | |
18880 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18881 | { | |
18882 | } | |
18883 | ||
35cc7ed7 YQ |
18884 | /* Read a minimal amount of information into the minimal die structure. |
18885 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18886 | |
48fbe735 YQ |
18887 | const gdb_byte * |
18888 | partial_die_info::read (const struct die_reader_specs *reader, | |
18889 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18890 | { |
dee91e82 | 18891 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18892 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18893 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18894 | unsigned int i; |
c5aa993b | 18895 | int has_low_pc_attr = 0; |
c906108c | 18896 | int has_high_pc_attr = 0; |
91da1414 | 18897 | int high_pc_relative = 0; |
c906108c | 18898 | |
fd0a254f | 18899 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18900 | { |
48fbe735 YQ |
18901 | struct attribute attr; |
18902 | ||
fd0a254f | 18903 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18904 | |
18905 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18906 | partial symbol table. */ |
c906108c SS |
18907 | switch (attr.name) |
18908 | { | |
18909 | case DW_AT_name: | |
48fbe735 | 18910 | switch (tag) |
71c25dea TT |
18911 | { |
18912 | case DW_TAG_compile_unit: | |
95554aad | 18913 | case DW_TAG_partial_unit: |
348e048f | 18914 | case DW_TAG_type_unit: |
71c25dea TT |
18915 | /* Compilation units have a DW_AT_name that is a filename, not |
18916 | a source language identifier. */ | |
18917 | case DW_TAG_enumeration_type: | |
18918 | case DW_TAG_enumerator: | |
18919 | /* These tags always have simple identifiers already; no need | |
18920 | to canonicalize them. */ | |
48fbe735 | 18921 | name = DW_STRING (&attr); |
71c25dea TT |
18922 | break; |
18923 | default: | |
48fbe735 YQ |
18924 | { |
18925 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18926 | ||
18927 | name | |
18928 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18929 | &objfile->per_bfd->storage_obstack); | |
18930 | } | |
71c25dea TT |
18931 | break; |
18932 | } | |
c906108c | 18933 | break; |
31ef98ae | 18934 | case DW_AT_linkage_name: |
c906108c | 18935 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18936 | /* Note that both forms of linkage name might appear. We |
18937 | assume they will be the same, and we only store the last | |
18938 | one we see. */ | |
94af9270 | 18939 | if (cu->language == language_ada) |
48fbe735 YQ |
18940 | name = DW_STRING (&attr); |
18941 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18942 | break; |
18943 | case DW_AT_low_pc: | |
18944 | has_low_pc_attr = 1; | |
48fbe735 | 18945 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18946 | break; |
18947 | case DW_AT_high_pc: | |
18948 | has_high_pc_attr = 1; | |
48fbe735 | 18949 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18950 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18951 | high_pc_relative = 1; | |
c906108c SS |
18952 | break; |
18953 | case DW_AT_location: | |
0963b4bd | 18954 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18955 | if (attr_form_is_block (&attr)) |
18956 | { | |
48fbe735 | 18957 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18958 | } |
3690dd37 | 18959 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18960 | { |
4d3c2250 | 18961 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18962 | } |
18963 | else | |
18964 | { | |
4d3c2250 KB |
18965 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18966 | "partial symbol information"); | |
8e19ed76 | 18967 | } |
c906108c | 18968 | break; |
c906108c | 18969 | case DW_AT_external: |
48fbe735 | 18970 | is_external = DW_UNSND (&attr); |
c906108c SS |
18971 | break; |
18972 | case DW_AT_declaration: | |
48fbe735 | 18973 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18974 | break; |
18975 | case DW_AT_type: | |
48fbe735 | 18976 | has_type = 1; |
c906108c SS |
18977 | break; |
18978 | case DW_AT_abstract_origin: | |
18979 | case DW_AT_specification: | |
72bf9492 | 18980 | case DW_AT_extension: |
48fbe735 YQ |
18981 | has_specification = 1; |
18982 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18983 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18984 | || cu->per_cu->is_dwz); |
c906108c SS |
18985 | break; |
18986 | case DW_AT_sibling: | |
18987 | /* Ignore absolute siblings, they might point outside of | |
18988 | the current compile unit. */ | |
18989 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
18990 | complaint (&symfile_complaints, |
18991 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 18992 | else |
b9502d3f | 18993 | { |
48fbe735 | 18994 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18995 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18996 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18997 | |
18998 | if (sibling_ptr < info_ptr) | |
18999 | complaint (&symfile_complaints, | |
19000 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
19001 | else if (sibling_ptr > reader->buffer_end) |
19002 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 19003 | else |
48fbe735 | 19004 | sibling = sibling_ptr; |
b9502d3f | 19005 | } |
c906108c | 19006 | break; |
fa4028e9 | 19007 | case DW_AT_byte_size: |
48fbe735 | 19008 | has_byte_size = 1; |
fa4028e9 | 19009 | break; |
ff908ebf | 19010 | case DW_AT_const_value: |
48fbe735 | 19011 | has_const_value = 1; |
ff908ebf | 19012 | break; |
68511cec CES |
19013 | case DW_AT_calling_convention: |
19014 | /* DWARF doesn't provide a way to identify a program's source-level | |
19015 | entry point. DW_AT_calling_convention attributes are only meant | |
19016 | to describe functions' calling conventions. | |
19017 | ||
19018 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19019 | Fortran, and before DWARF 4 DW_CC_program was the only |
19020 | piece of debugging information whose definition refers to | |
19021 | a 'main program' at all, several compilers marked Fortran | |
19022 | main programs with DW_CC_program --- even when those | |
19023 | functions use the standard calling conventions. | |
19024 | ||
19025 | Although DWARF now specifies a way to provide this | |
19026 | information, we support this practice for backward | |
19027 | compatibility. */ | |
68511cec | 19028 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 19029 | && cu->language == language_fortran) |
48fbe735 | 19030 | main_subprogram = 1; |
68511cec | 19031 | break; |
481860b3 GB |
19032 | case DW_AT_inline: |
19033 | if (DW_UNSND (&attr) == DW_INL_inlined | |
19034 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 19035 | may_be_inlined = 1; |
481860b3 | 19036 | break; |
95554aad TT |
19037 | |
19038 | case DW_AT_import: | |
48fbe735 | 19039 | if (tag == DW_TAG_imported_unit) |
36586728 | 19040 | { |
48fbe735 YQ |
19041 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
19042 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
19043 | || cu->per_cu->is_dwz); |
19044 | } | |
95554aad TT |
19045 | break; |
19046 | ||
0c1b455e | 19047 | case DW_AT_main_subprogram: |
48fbe735 | 19048 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
19049 | break; |
19050 | ||
c906108c SS |
19051 | default: |
19052 | break; | |
19053 | } | |
19054 | } | |
19055 | ||
91da1414 | 19056 | if (high_pc_relative) |
48fbe735 | 19057 | highpc += lowpc; |
91da1414 | 19058 | |
9373cf26 JK |
19059 | if (has_low_pc_attr && has_high_pc_attr) |
19060 | { | |
19061 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19062 | eliminate duplicate copies of functions and vtables and such. | |
19063 | The linker will arbitrarily choose one and discard the others. | |
19064 | The AT_*_pc values for such functions refer to local labels in | |
19065 | these sections. If the section from that file was discarded, the | |
19066 | labels are not in the output, so the relocs get a value of 0. | |
19067 | If this is a discarded function, mark the pc bounds as invalid, | |
19068 | so that GDB will ignore it. */ | |
48fbe735 | 19069 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 19070 | { |
48fbe735 | 19071 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19072 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
19073 | |
19074 | complaint (&symfile_complaints, | |
19075 | _("DW_AT_low_pc %s is zero " | |
9d8780f0 | 19076 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19077 | paddress (gdbarch, lowpc), |
19078 | sect_offset_str (sect_off), | |
9d8780f0 | 19079 | objfile_name (objfile)); |
9373cf26 JK |
19080 | } |
19081 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19082 | else if (lowpc >= highpc) |
9373cf26 | 19083 | { |
48fbe735 | 19084 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19085 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
19086 | |
19087 | complaint (&symfile_complaints, | |
19088 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9d8780f0 | 19089 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19090 | paddress (gdbarch, lowpc), |
19091 | paddress (gdbarch, highpc), | |
19092 | sect_offset_str (sect_off), | |
9c541725 | 19093 | objfile_name (objfile)); |
9373cf26 JK |
19094 | } |
19095 | else | |
48fbe735 | 19096 | has_pc_info = 1; |
9373cf26 | 19097 | } |
85cbf3d3 | 19098 | |
c906108c SS |
19099 | return info_ptr; |
19100 | } | |
19101 | ||
72bf9492 DJ |
19102 | /* Find a cached partial DIE at OFFSET in CU. */ |
19103 | ||
d590ff25 YQ |
19104 | struct partial_die_info * |
19105 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19106 | { |
19107 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19108 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19109 | |
9a3c8263 | 19110 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19111 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19112 | to_underlying (sect_off))); |
72bf9492 | 19113 | |
72bf9492 DJ |
19114 | return lookup_die; |
19115 | } | |
19116 | ||
348e048f DE |
19117 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19118 | except in the case of .debug_types DIEs which do not reference | |
19119 | outside their CU (they do however referencing other types via | |
55f1336d | 19120 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
19121 | |
19122 | static struct partial_die_info * | |
9c541725 | 19123 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19124 | { |
518817b3 SM |
19125 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19126 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19127 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
19128 | struct dwarf2_per_cu_data *per_cu = NULL; |
19129 | struct partial_die_info *pd = NULL; | |
72bf9492 | 19130 | |
36586728 | 19131 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 19132 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 19133 | { |
d590ff25 | 19134 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19135 | if (pd != NULL) |
19136 | return pd; | |
0d99eb77 DE |
19137 | /* We missed recording what we needed. |
19138 | Load all dies and try again. */ | |
19139 | per_cu = cu->per_cu; | |
5afb4e99 | 19140 | } |
0d99eb77 DE |
19141 | else |
19142 | { | |
19143 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19144 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19145 | { |
9d8780f0 SM |
19146 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19147 | " external reference to offset %s [in module %s].\n"), | |
19148 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19149 | bfd_get_filename (objfile->obfd)); |
19150 | } | |
9c541725 | 19151 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 19152 | dwarf2_per_objfile); |
72bf9492 | 19153 | |
0d99eb77 DE |
19154 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
19155 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 19156 | |
0d99eb77 | 19157 | per_cu->cu->last_used = 0; |
d590ff25 | 19158 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 19159 | } |
5afb4e99 | 19160 | |
dee91e82 DE |
19161 | /* If we didn't find it, and not all dies have been loaded, |
19162 | load them all and try again. */ | |
19163 | ||
5afb4e99 DJ |
19164 | if (pd == NULL && per_cu->load_all_dies == 0) |
19165 | { | |
5afb4e99 | 19166 | per_cu->load_all_dies = 1; |
fd820528 DE |
19167 | |
19168 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19169 | THIS_CU->cu may already be in use. So we can't just free it and | |
19170 | replace its DIEs with the ones we read in. Instead, we leave those | |
19171 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19172 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19173 | set. */ | |
dee91e82 | 19174 | load_partial_comp_unit (per_cu); |
5afb4e99 | 19175 | |
d590ff25 | 19176 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19177 | } |
19178 | ||
19179 | if (pd == NULL) | |
19180 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 19181 | _("could not find partial DIE %s " |
3e43a32a | 19182 | "in cache [from module %s]\n"), |
9d8780f0 | 19183 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 19184 | return pd; |
72bf9492 DJ |
19185 | } |
19186 | ||
abc72ce4 DE |
19187 | /* See if we can figure out if the class lives in a namespace. We do |
19188 | this by looking for a member function; its demangled name will | |
19189 | contain namespace info, if there is any. */ | |
19190 | ||
19191 | static void | |
19192 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19193 | struct dwarf2_cu *cu) | |
19194 | { | |
19195 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19196 | what template types look like, because the demangler | |
19197 | frequently doesn't give the same name as the debug info. We | |
19198 | could fix this by only using the demangled name to get the | |
19199 | prefix (but see comment in read_structure_type). */ | |
19200 | ||
19201 | struct partial_die_info *real_pdi; | |
19202 | struct partial_die_info *child_pdi; | |
19203 | ||
19204 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19205 | we should not do this. We'll prepend the parent's fully qualified | |
19206 | name when we create the partial symbol. */ | |
19207 | ||
19208 | real_pdi = struct_pdi; | |
19209 | while (real_pdi->has_specification) | |
36586728 TT |
19210 | real_pdi = find_partial_die (real_pdi->spec_offset, |
19211 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
19212 | |
19213 | if (real_pdi->die_parent != NULL) | |
19214 | return; | |
19215 | ||
19216 | for (child_pdi = struct_pdi->die_child; | |
19217 | child_pdi != NULL; | |
19218 | child_pdi = child_pdi->die_sibling) | |
19219 | { | |
19220 | if (child_pdi->tag == DW_TAG_subprogram | |
19221 | && child_pdi->linkage_name != NULL) | |
19222 | { | |
19223 | char *actual_class_name | |
19224 | = language_class_name_from_physname (cu->language_defn, | |
19225 | child_pdi->linkage_name); | |
19226 | if (actual_class_name != NULL) | |
19227 | { | |
518817b3 | 19228 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 19229 | struct_pdi->name |
224c3ddb | 19230 | = ((const char *) |
e3b94546 | 19231 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
19232 | actual_class_name, |
19233 | strlen (actual_class_name))); | |
abc72ce4 DE |
19234 | xfree (actual_class_name); |
19235 | } | |
19236 | break; | |
19237 | } | |
19238 | } | |
19239 | } | |
19240 | ||
52356b79 YQ |
19241 | void |
19242 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19243 | { |
abc72ce4 DE |
19244 | /* Once we've fixed up a die, there's no point in doing so again. |
19245 | This also avoids a memory leak if we were to call | |
19246 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19247 | if (fixup_called) |
abc72ce4 DE |
19248 | return; |
19249 | ||
72bf9492 DJ |
19250 | /* If we found a reference attribute and the DIE has no name, try |
19251 | to find a name in the referred to DIE. */ | |
19252 | ||
52356b79 | 19253 | if (name == NULL && has_specification) |
72bf9492 DJ |
19254 | { |
19255 | struct partial_die_info *spec_die; | |
72bf9492 | 19256 | |
52356b79 | 19257 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 19258 | |
52356b79 | 19259 | spec_die->fixup (cu); |
72bf9492 DJ |
19260 | |
19261 | if (spec_die->name) | |
19262 | { | |
52356b79 | 19263 | name = spec_die->name; |
72bf9492 DJ |
19264 | |
19265 | /* Copy DW_AT_external attribute if it is set. */ | |
19266 | if (spec_die->is_external) | |
52356b79 | 19267 | is_external = spec_die->is_external; |
72bf9492 DJ |
19268 | } |
19269 | } | |
19270 | ||
19271 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 19272 | |
52356b79 YQ |
19273 | if (name == NULL && tag == DW_TAG_namespace) |
19274 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 19275 | |
abc72ce4 DE |
19276 | /* If there is no parent die to provide a namespace, and there are |
19277 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19278 | name. */ |
abc72ce4 | 19279 | if (cu->language == language_cplus |
518817b3 SM |
19280 | && !VEC_empty (dwarf2_section_info_def, |
19281 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
19282 | && die_parent == NULL |
19283 | && has_children | |
19284 | && (tag == DW_TAG_class_type | |
19285 | || tag == DW_TAG_structure_type | |
19286 | || tag == DW_TAG_union_type)) | |
19287 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19288 | |
53832f31 TT |
19289 | /* GCC might emit a nameless struct or union that has a linkage |
19290 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
19291 | if (name == NULL |
19292 | && (tag == DW_TAG_class_type | |
19293 | || tag == DW_TAG_interface_type | |
19294 | || tag == DW_TAG_structure_type | |
19295 | || tag == DW_TAG_union_type) | |
19296 | && linkage_name != NULL) | |
53832f31 TT |
19297 | { |
19298 | char *demangled; | |
19299 | ||
52356b79 | 19300 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
19301 | if (demangled) |
19302 | { | |
96408a79 SA |
19303 | const char *base; |
19304 | ||
19305 | /* Strip any leading namespaces/classes, keep only the base name. | |
19306 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19307 | base = strrchr (demangled, ':'); | |
19308 | if (base && base > demangled && base[-1] == ':') | |
19309 | base++; | |
19310 | else | |
19311 | base = demangled; | |
19312 | ||
518817b3 | 19313 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 19314 | name |
224c3ddb | 19315 | = ((const char *) |
e3b94546 | 19316 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 19317 | base, strlen (base))); |
53832f31 TT |
19318 | xfree (demangled); |
19319 | } | |
19320 | } | |
19321 | ||
52356b79 | 19322 | fixup_called = 1; |
72bf9492 DJ |
19323 | } |
19324 | ||
a8329558 | 19325 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19326 | |
d521ce57 | 19327 | static const gdb_byte * |
dee91e82 DE |
19328 | read_attribute_value (const struct die_reader_specs *reader, |
19329 | struct attribute *attr, unsigned form, | |
43988095 | 19330 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19331 | { |
dee91e82 | 19332 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19333 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19334 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19335 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19336 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19337 | bfd *abfd = reader->abfd; |
e7c27a73 | 19338 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19339 | unsigned int bytes_read; |
19340 | struct dwarf_block *blk; | |
19341 | ||
aead7601 | 19342 | attr->form = (enum dwarf_form) form; |
a8329558 | 19343 | switch (form) |
c906108c | 19344 | { |
c906108c | 19345 | case DW_FORM_ref_addr: |
ae411497 | 19346 | if (cu->header.version == 2) |
4568ecf9 | 19347 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19348 | else |
4568ecf9 DE |
19349 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19350 | &cu->header, &bytes_read); | |
ae411497 TT |
19351 | info_ptr += bytes_read; |
19352 | break; | |
36586728 TT |
19353 | case DW_FORM_GNU_ref_alt: |
19354 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19355 | info_ptr += bytes_read; | |
19356 | break; | |
ae411497 | 19357 | case DW_FORM_addr: |
e7c27a73 | 19358 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19359 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19360 | info_ptr += bytes_read; |
c906108c SS |
19361 | break; |
19362 | case DW_FORM_block2: | |
7b5a2f43 | 19363 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19364 | blk->size = read_2_bytes (abfd, info_ptr); |
19365 | info_ptr += 2; | |
19366 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19367 | info_ptr += blk->size; | |
19368 | DW_BLOCK (attr) = blk; | |
19369 | break; | |
19370 | case DW_FORM_block4: | |
7b5a2f43 | 19371 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19372 | blk->size = read_4_bytes (abfd, info_ptr); |
19373 | info_ptr += 4; | |
19374 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19375 | info_ptr += blk->size; | |
19376 | DW_BLOCK (attr) = blk; | |
19377 | break; | |
19378 | case DW_FORM_data2: | |
19379 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19380 | info_ptr += 2; | |
19381 | break; | |
19382 | case DW_FORM_data4: | |
19383 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19384 | info_ptr += 4; | |
19385 | break; | |
19386 | case DW_FORM_data8: | |
19387 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19388 | info_ptr += 8; | |
19389 | break; | |
0224619f JK |
19390 | case DW_FORM_data16: |
19391 | blk = dwarf_alloc_block (cu); | |
19392 | blk->size = 16; | |
19393 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19394 | info_ptr += 16; | |
19395 | DW_BLOCK (attr) = blk; | |
19396 | break; | |
2dc7f7b3 TT |
19397 | case DW_FORM_sec_offset: |
19398 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19399 | info_ptr += bytes_read; | |
19400 | break; | |
c906108c | 19401 | case DW_FORM_string: |
9b1c24c8 | 19402 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19403 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19404 | info_ptr += bytes_read; |
19405 | break; | |
4bdf3d34 | 19406 | case DW_FORM_strp: |
36586728 TT |
19407 | if (!cu->per_cu->is_dwz) |
19408 | { | |
ed2dc618 SM |
19409 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19410 | abfd, info_ptr, cu_header, | |
36586728 TT |
19411 | &bytes_read); |
19412 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19413 | info_ptr += bytes_read; | |
19414 | break; | |
19415 | } | |
19416 | /* FALLTHROUGH */ | |
43988095 JK |
19417 | case DW_FORM_line_strp: |
19418 | if (!cu->per_cu->is_dwz) | |
19419 | { | |
ed2dc618 SM |
19420 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19421 | abfd, info_ptr, | |
43988095 JK |
19422 | cu_header, &bytes_read); |
19423 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19424 | info_ptr += bytes_read; | |
19425 | break; | |
19426 | } | |
19427 | /* FALLTHROUGH */ | |
36586728 TT |
19428 | case DW_FORM_GNU_strp_alt: |
19429 | { | |
ed2dc618 | 19430 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19431 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19432 | &bytes_read); | |
19433 | ||
ed2dc618 SM |
19434 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19435 | dwz, str_offset); | |
36586728 TT |
19436 | DW_STRING_IS_CANONICAL (attr) = 0; |
19437 | info_ptr += bytes_read; | |
19438 | } | |
4bdf3d34 | 19439 | break; |
2dc7f7b3 | 19440 | case DW_FORM_exprloc: |
c906108c | 19441 | case DW_FORM_block: |
7b5a2f43 | 19442 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19443 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19444 | info_ptr += bytes_read; | |
19445 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19446 | info_ptr += blk->size; | |
19447 | DW_BLOCK (attr) = blk; | |
19448 | break; | |
19449 | case DW_FORM_block1: | |
7b5a2f43 | 19450 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19451 | blk->size = read_1_byte (abfd, info_ptr); |
19452 | info_ptr += 1; | |
19453 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19454 | info_ptr += blk->size; | |
19455 | DW_BLOCK (attr) = blk; | |
19456 | break; | |
19457 | case DW_FORM_data1: | |
19458 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19459 | info_ptr += 1; | |
19460 | break; | |
19461 | case DW_FORM_flag: | |
19462 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19463 | info_ptr += 1; | |
19464 | break; | |
2dc7f7b3 TT |
19465 | case DW_FORM_flag_present: |
19466 | DW_UNSND (attr) = 1; | |
19467 | break; | |
c906108c SS |
19468 | case DW_FORM_sdata: |
19469 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19470 | info_ptr += bytes_read; | |
19471 | break; | |
19472 | case DW_FORM_udata: | |
19473 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19474 | info_ptr += bytes_read; | |
19475 | break; | |
19476 | case DW_FORM_ref1: | |
9c541725 | 19477 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19478 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19479 | info_ptr += 1; |
19480 | break; | |
19481 | case DW_FORM_ref2: | |
9c541725 | 19482 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19483 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19484 | info_ptr += 2; |
19485 | break; | |
19486 | case DW_FORM_ref4: | |
9c541725 | 19487 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19488 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19489 | info_ptr += 4; |
19490 | break; | |
613e1657 | 19491 | case DW_FORM_ref8: |
9c541725 | 19492 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19493 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19494 | info_ptr += 8; |
19495 | break; | |
55f1336d | 19496 | case DW_FORM_ref_sig8: |
ac9ec31b | 19497 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19498 | info_ptr += 8; |
19499 | break; | |
c906108c | 19500 | case DW_FORM_ref_udata: |
9c541725 | 19501 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19502 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19503 | info_ptr += bytes_read; |
19504 | break; | |
c906108c | 19505 | case DW_FORM_indirect: |
a8329558 KW |
19506 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19507 | info_ptr += bytes_read; | |
43988095 JK |
19508 | if (form == DW_FORM_implicit_const) |
19509 | { | |
19510 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19511 | info_ptr += bytes_read; | |
19512 | } | |
19513 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19514 | info_ptr); | |
19515 | break; | |
19516 | case DW_FORM_implicit_const: | |
19517 | DW_SND (attr) = implicit_const; | |
a8329558 | 19518 | break; |
3019eac3 DE |
19519 | case DW_FORM_GNU_addr_index: |
19520 | if (reader->dwo_file == NULL) | |
19521 | { | |
19522 | /* For now flag a hard error. | |
19523 | Later we can turn this into a complaint. */ | |
19524 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19525 | dwarf_form_name (form), | |
19526 | bfd_get_filename (abfd)); | |
19527 | } | |
19528 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19529 | info_ptr += bytes_read; | |
19530 | break; | |
19531 | case DW_FORM_GNU_str_index: | |
19532 | if (reader->dwo_file == NULL) | |
19533 | { | |
19534 | /* For now flag a hard error. | |
19535 | Later we can turn this into a complaint if warranted. */ | |
19536 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19537 | dwarf_form_name (form), | |
19538 | bfd_get_filename (abfd)); | |
19539 | } | |
19540 | { | |
19541 | ULONGEST str_index = | |
19542 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19543 | ||
342587c4 | 19544 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19545 | DW_STRING_IS_CANONICAL (attr) = 0; |
19546 | info_ptr += bytes_read; | |
19547 | } | |
19548 | break; | |
c906108c | 19549 | default: |
8a3fe4f8 | 19550 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19551 | dwarf_form_name (form), |
19552 | bfd_get_filename (abfd)); | |
c906108c | 19553 | } |
28e94949 | 19554 | |
36586728 | 19555 | /* Super hack. */ |
7771576e | 19556 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19557 | attr->form = DW_FORM_GNU_ref_alt; |
19558 | ||
28e94949 JB |
19559 | /* We have seen instances where the compiler tried to emit a byte |
19560 | size attribute of -1 which ended up being encoded as an unsigned | |
19561 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19562 | an object of this size seems pretty unlikely so we can relatively | |
19563 | safely treat these cases as if the size attribute was invalid and | |
19564 | treat them as zero by default. */ | |
19565 | if (attr->name == DW_AT_byte_size | |
19566 | && form == DW_FORM_data4 | |
19567 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19568 | { |
19569 | complaint | |
19570 | (&symfile_complaints, | |
43bbcdc2 PH |
19571 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
19572 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
19573 | DW_UNSND (attr) = 0; |
19574 | } | |
28e94949 | 19575 | |
c906108c SS |
19576 | return info_ptr; |
19577 | } | |
19578 | ||
a8329558 KW |
19579 | /* Read an attribute described by an abbreviated attribute. */ |
19580 | ||
d521ce57 | 19581 | static const gdb_byte * |
dee91e82 DE |
19582 | read_attribute (const struct die_reader_specs *reader, |
19583 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19584 | const gdb_byte *info_ptr) |
a8329558 KW |
19585 | { |
19586 | attr->name = abbrev->name; | |
43988095 JK |
19587 | return read_attribute_value (reader, attr, abbrev->form, |
19588 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19589 | } |
19590 | ||
0963b4bd | 19591 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19592 | |
19593 | static unsigned int | |
a1855c1d | 19594 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19595 | { |
fe1b8b76 | 19596 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19597 | } |
19598 | ||
19599 | static int | |
a1855c1d | 19600 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19601 | { |
fe1b8b76 | 19602 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19603 | } |
19604 | ||
19605 | static unsigned int | |
a1855c1d | 19606 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19607 | { |
fe1b8b76 | 19608 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19609 | } |
19610 | ||
21ae7a4d | 19611 | static int |
a1855c1d | 19612 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19613 | { |
19614 | return bfd_get_signed_16 (abfd, buf); | |
19615 | } | |
19616 | ||
c906108c | 19617 | static unsigned int |
a1855c1d | 19618 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19619 | { |
fe1b8b76 | 19620 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19621 | } |
19622 | ||
21ae7a4d | 19623 | static int |
a1855c1d | 19624 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19625 | { |
19626 | return bfd_get_signed_32 (abfd, buf); | |
19627 | } | |
19628 | ||
93311388 | 19629 | static ULONGEST |
a1855c1d | 19630 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19631 | { |
fe1b8b76 | 19632 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19633 | } |
19634 | ||
19635 | static CORE_ADDR | |
d521ce57 | 19636 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19637 | unsigned int *bytes_read) |
c906108c | 19638 | { |
e7c27a73 | 19639 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19640 | CORE_ADDR retval = 0; |
19641 | ||
107d2387 | 19642 | if (cu_header->signed_addr_p) |
c906108c | 19643 | { |
107d2387 AC |
19644 | switch (cu_header->addr_size) |
19645 | { | |
19646 | case 2: | |
fe1b8b76 | 19647 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19648 | break; |
19649 | case 4: | |
fe1b8b76 | 19650 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19651 | break; |
19652 | case 8: | |
fe1b8b76 | 19653 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19654 | break; |
19655 | default: | |
8e65ff28 | 19656 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19657 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19658 | bfd_get_filename (abfd)); |
107d2387 AC |
19659 | } |
19660 | } | |
19661 | else | |
19662 | { | |
19663 | switch (cu_header->addr_size) | |
19664 | { | |
19665 | case 2: | |
fe1b8b76 | 19666 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19667 | break; |
19668 | case 4: | |
fe1b8b76 | 19669 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19670 | break; |
19671 | case 8: | |
fe1b8b76 | 19672 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19673 | break; |
19674 | default: | |
8e65ff28 | 19675 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19676 | _("read_address: bad switch, " |
19677 | "unsigned [in module %s]"), | |
659b0389 | 19678 | bfd_get_filename (abfd)); |
107d2387 | 19679 | } |
c906108c | 19680 | } |
64367e0a | 19681 | |
107d2387 AC |
19682 | *bytes_read = cu_header->addr_size; |
19683 | return retval; | |
c906108c SS |
19684 | } |
19685 | ||
f7ef9339 | 19686 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19687 | specification allows the initial length to take up either 4 bytes |
19688 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19689 | bytes describe the length and all offsets will be 8 bytes in length | |
19690 | instead of 4. | |
19691 | ||
f7ef9339 KB |
19692 | An older, non-standard 64-bit format is also handled by this |
19693 | function. The older format in question stores the initial length | |
19694 | as an 8-byte quantity without an escape value. Lengths greater | |
19695 | than 2^32 aren't very common which means that the initial 4 bytes | |
19696 | is almost always zero. Since a length value of zero doesn't make | |
19697 | sense for the 32-bit format, this initial zero can be considered to | |
19698 | be an escape value which indicates the presence of the older 64-bit | |
19699 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19700 | greater than 4GB. If it becomes necessary to handle lengths |
19701 | somewhat larger than 4GB, we could allow other small values (such | |
19702 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19703 | escape values indicating the presence of the old format. | |
f7ef9339 | 19704 | |
917c78fc MK |
19705 | The value returned via bytes_read should be used to increment the |
19706 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19707 | |
613e1657 KB |
19708 | [ Note: read_initial_length() and read_offset() are based on the |
19709 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19710 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19711 | from: |
19712 | ||
f7ef9339 | 19713 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19714 | |
613e1657 KB |
19715 | This document is only a draft and is subject to change. (So beware.) |
19716 | ||
f7ef9339 | 19717 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19718 | determined empirically by examining 64-bit ELF files produced by |
19719 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19720 | |
19721 | - Kevin, July 16, 2002 | |
613e1657 KB |
19722 | ] */ |
19723 | ||
19724 | static LONGEST | |
d521ce57 | 19725 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19726 | { |
fe1b8b76 | 19727 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19728 | |
dd373385 | 19729 | if (length == 0xffffffff) |
613e1657 | 19730 | { |
fe1b8b76 | 19731 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19732 | *bytes_read = 12; |
613e1657 | 19733 | } |
dd373385 | 19734 | else if (length == 0) |
f7ef9339 | 19735 | { |
dd373385 | 19736 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19737 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19738 | *bytes_read = 8; |
f7ef9339 | 19739 | } |
613e1657 KB |
19740 | else |
19741 | { | |
19742 | *bytes_read = 4; | |
613e1657 KB |
19743 | } |
19744 | ||
c764a876 DE |
19745 | return length; |
19746 | } | |
dd373385 | 19747 | |
c764a876 DE |
19748 | /* Cover function for read_initial_length. |
19749 | Returns the length of the object at BUF, and stores the size of the | |
19750 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19751 | *OFFSET_SIZE. | |
19752 | If the initial length size is not equivalent to that specified in | |
19753 | CU_HEADER then issue a complaint. | |
19754 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19755 | |
c764a876 | 19756 | static LONGEST |
d521ce57 | 19757 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19758 | const struct comp_unit_head *cu_header, |
19759 | unsigned int *bytes_read, | |
19760 | unsigned int *offset_size) | |
19761 | { | |
19762 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19763 | ||
19764 | gdb_assert (cu_header->initial_length_size == 4 | |
19765 | || cu_header->initial_length_size == 8 | |
19766 | || cu_header->initial_length_size == 12); | |
19767 | ||
19768 | if (cu_header->initial_length_size != *bytes_read) | |
19769 | complaint (&symfile_complaints, | |
19770 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 19771 | |
c764a876 | 19772 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19773 | return length; |
613e1657 KB |
19774 | } |
19775 | ||
19776 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19777 | given by cu_header->offset_size. */ |
613e1657 KB |
19778 | |
19779 | static LONGEST | |
d521ce57 TT |
19780 | read_offset (bfd *abfd, const gdb_byte *buf, |
19781 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19782 | unsigned int *bytes_read) |
c764a876 DE |
19783 | { |
19784 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19785 | |
c764a876 DE |
19786 | *bytes_read = cu_header->offset_size; |
19787 | return offset; | |
19788 | } | |
19789 | ||
19790 | /* Read an offset from the data stream. */ | |
19791 | ||
19792 | static LONGEST | |
d521ce57 | 19793 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19794 | { |
19795 | LONGEST retval = 0; | |
19796 | ||
c764a876 | 19797 | switch (offset_size) |
613e1657 KB |
19798 | { |
19799 | case 4: | |
fe1b8b76 | 19800 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19801 | break; |
19802 | case 8: | |
fe1b8b76 | 19803 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19804 | break; |
19805 | default: | |
8e65ff28 | 19806 | internal_error (__FILE__, __LINE__, |
c764a876 | 19807 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19808 | bfd_get_filename (abfd)); |
613e1657 KB |
19809 | } |
19810 | ||
917c78fc | 19811 | return retval; |
613e1657 KB |
19812 | } |
19813 | ||
d521ce57 TT |
19814 | static const gdb_byte * |
19815 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19816 | { |
19817 | /* If the size of a host char is 8 bits, we can return a pointer | |
19818 | to the buffer, otherwise we have to copy the data to a buffer | |
19819 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19820 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19821 | return buf; |
c906108c SS |
19822 | } |
19823 | ||
d521ce57 TT |
19824 | static const char * |
19825 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19826 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19827 | { |
19828 | /* If the size of a host char is 8 bits, we can return a pointer | |
19829 | to the string, otherwise we have to copy the string to a buffer | |
19830 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19831 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19832 | if (*buf == '\0') |
19833 | { | |
19834 | *bytes_read_ptr = 1; | |
19835 | return NULL; | |
19836 | } | |
d521ce57 TT |
19837 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19838 | return (const char *) buf; | |
4bdf3d34 JJ |
19839 | } |
19840 | ||
43988095 JK |
19841 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19842 | reporting strings FORM_NAME and SECT_NAME. */ | |
19843 | ||
d521ce57 | 19844 | static const char * |
ed2dc618 SM |
19845 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19846 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19847 | struct dwarf2_section_info *sect, |
19848 | const char *form_name, | |
19849 | const char *sect_name) | |
19850 | { | |
ed2dc618 | 19851 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19852 | if (sect->buffer == NULL) |
19853 | error (_("%s used without %s section [in module %s]"), | |
19854 | form_name, sect_name, bfd_get_filename (abfd)); | |
19855 | if (str_offset >= sect->size) | |
19856 | error (_("%s pointing outside of %s section [in module %s]"), | |
19857 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19858 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19859 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19860 | return NULL; |
43988095 JK |
19861 | return (const char *) (sect->buffer + str_offset); |
19862 | } | |
19863 | ||
19864 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19865 | ||
19866 | static const char * | |
ed2dc618 SM |
19867 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19868 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19869 | { |
ed2dc618 SM |
19870 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19871 | abfd, str_offset, | |
43988095 JK |
19872 | &dwarf2_per_objfile->str, |
19873 | "DW_FORM_strp", ".debug_str"); | |
19874 | } | |
19875 | ||
19876 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19877 | ||
19878 | static const char * | |
ed2dc618 SM |
19879 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19880 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19881 | { |
ed2dc618 SM |
19882 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19883 | abfd, str_offset, | |
43988095 JK |
19884 | &dwarf2_per_objfile->line_str, |
19885 | "DW_FORM_line_strp", | |
19886 | ".debug_line_str"); | |
c906108c SS |
19887 | } |
19888 | ||
36586728 TT |
19889 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19890 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19891 | the string consists of a single NUL byte, return NULL; otherwise | |
19892 | return a pointer to the string. */ | |
19893 | ||
d521ce57 | 19894 | static const char * |
ed2dc618 SM |
19895 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19896 | LONGEST str_offset) | |
36586728 | 19897 | { |
ed2dc618 | 19898 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19899 | |
19900 | if (dwz->str.buffer == NULL) | |
19901 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19902 | "section [in module %s]"), | |
19903 | bfd_get_filename (dwz->dwz_bfd)); | |
19904 | if (str_offset >= dwz->str.size) | |
19905 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19906 | ".debug_str section [in module %s]"), | |
19907 | bfd_get_filename (dwz->dwz_bfd)); | |
19908 | gdb_assert (HOST_CHAR_BIT == 8); | |
19909 | if (dwz->str.buffer[str_offset] == '\0') | |
19910 | return NULL; | |
d521ce57 | 19911 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19912 | } |
19913 | ||
43988095 JK |
19914 | /* Return pointer to string at .debug_str offset as read from BUF. |
19915 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19916 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19917 | ||
d521ce57 | 19918 | static const char * |
ed2dc618 SM |
19919 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19920 | const gdb_byte *buf, | |
cf2c3c16 TT |
19921 | const struct comp_unit_head *cu_header, |
19922 | unsigned int *bytes_read_ptr) | |
19923 | { | |
19924 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19925 | ||
ed2dc618 | 19926 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19927 | } |
19928 | ||
43988095 JK |
19929 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19930 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19931 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19932 | ||
19933 | static const char * | |
ed2dc618 SM |
19934 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19935 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19936 | const struct comp_unit_head *cu_header, |
19937 | unsigned int *bytes_read_ptr) | |
19938 | { | |
19939 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19940 | ||
ed2dc618 SM |
19941 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19942 | str_offset); | |
43988095 JK |
19943 | } |
19944 | ||
19945 | ULONGEST | |
d521ce57 | 19946 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19947 | unsigned int *bytes_read_ptr) |
c906108c | 19948 | { |
12df843f | 19949 | ULONGEST result; |
ce5d95e1 | 19950 | unsigned int num_read; |
870f88f7 | 19951 | int shift; |
c906108c SS |
19952 | unsigned char byte; |
19953 | ||
19954 | result = 0; | |
19955 | shift = 0; | |
19956 | num_read = 0; | |
c906108c SS |
19957 | while (1) |
19958 | { | |
fe1b8b76 | 19959 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19960 | buf++; |
19961 | num_read++; | |
12df843f | 19962 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19963 | if ((byte & 128) == 0) |
19964 | { | |
19965 | break; | |
19966 | } | |
19967 | shift += 7; | |
19968 | } | |
19969 | *bytes_read_ptr = num_read; | |
19970 | return result; | |
19971 | } | |
19972 | ||
12df843f | 19973 | static LONGEST |
d521ce57 TT |
19974 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19975 | unsigned int *bytes_read_ptr) | |
c906108c | 19976 | { |
12df843f | 19977 | LONGEST result; |
870f88f7 | 19978 | int shift, num_read; |
c906108c SS |
19979 | unsigned char byte; |
19980 | ||
19981 | result = 0; | |
19982 | shift = 0; | |
c906108c | 19983 | num_read = 0; |
c906108c SS |
19984 | while (1) |
19985 | { | |
fe1b8b76 | 19986 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19987 | buf++; |
19988 | num_read++; | |
12df843f | 19989 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19990 | shift += 7; |
19991 | if ((byte & 128) == 0) | |
19992 | { | |
19993 | break; | |
19994 | } | |
19995 | } | |
77e0b926 | 19996 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19997 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19998 | *bytes_read_ptr = num_read; |
19999 | return result; | |
20000 | } | |
20001 | ||
3019eac3 DE |
20002 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
20003 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
20004 | ADDR_SIZE is the size of addresses from the CU header. */ | |
20005 | ||
20006 | static CORE_ADDR | |
ed2dc618 SM |
20007 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20008 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
20009 | { |
20010 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20011 | bfd *abfd = objfile->obfd; | |
20012 | const gdb_byte *info_ptr; | |
20013 | ||
20014 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
20015 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
20016 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 20017 | objfile_name (objfile)); |
3019eac3 DE |
20018 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
20019 | error (_("DW_FORM_addr_index pointing outside of " | |
20020 | ".debug_addr section [in module %s]"), | |
4262abfb | 20021 | objfile_name (objfile)); |
3019eac3 DE |
20022 | info_ptr = (dwarf2_per_objfile->addr.buffer |
20023 | + addr_base + addr_index * addr_size); | |
20024 | if (addr_size == 4) | |
20025 | return bfd_get_32 (abfd, info_ptr); | |
20026 | else | |
20027 | return bfd_get_64 (abfd, info_ptr); | |
20028 | } | |
20029 | ||
20030 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20031 | ||
20032 | static CORE_ADDR | |
20033 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20034 | { | |
518817b3 SM |
20035 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
20036 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
20037 | } |
20038 | ||
20039 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20040 | ||
20041 | static CORE_ADDR | |
d521ce57 | 20042 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20043 | unsigned int *bytes_read) |
20044 | { | |
518817b3 | 20045 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
20046 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20047 | ||
20048 | return read_addr_index (cu, addr_index); | |
20049 | } | |
20050 | ||
20051 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
20052 | back to dwarf2_read_addr_index. */ | |
20053 | ||
20054 | struct dwarf2_read_addr_index_data | |
20055 | { | |
20056 | ULONGEST addr_base; | |
20057 | int addr_size; | |
20058 | }; | |
20059 | ||
20060 | /* die_reader_func for dwarf2_read_addr_index. */ | |
20061 | ||
20062 | static void | |
20063 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 20064 | const gdb_byte *info_ptr, |
3019eac3 DE |
20065 | struct die_info *comp_unit_die, |
20066 | int has_children, | |
20067 | void *data) | |
20068 | { | |
20069 | struct dwarf2_cu *cu = reader->cu; | |
20070 | struct dwarf2_read_addr_index_data *aidata = | |
20071 | (struct dwarf2_read_addr_index_data *) data; | |
20072 | ||
20073 | aidata->addr_base = cu->addr_base; | |
20074 | aidata->addr_size = cu->header.addr_size; | |
20075 | } | |
20076 | ||
20077 | /* Given an index in .debug_addr, fetch the value. | |
20078 | NOTE: This can be called during dwarf expression evaluation, | |
20079 | long after the debug information has been read, and thus per_cu->cu | |
20080 | may no longer exist. */ | |
20081 | ||
20082 | CORE_ADDR | |
20083 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
20084 | unsigned int addr_index) | |
20085 | { | |
ed2dc618 SM |
20086 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
20087 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
20088 | struct dwarf2_cu *cu = per_cu->cu; |
20089 | ULONGEST addr_base; | |
20090 | int addr_size; | |
20091 | ||
3019eac3 DE |
20092 | /* We need addr_base and addr_size. |
20093 | If we don't have PER_CU->cu, we have to get it. | |
20094 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20095 | which at this point doesn't seem justified: it's not clear how frequently | |
20096 | it would get used and it would increase the size of every PER_CU. | |
20097 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20098 | so we're not in uncharted territory here. | |
20099 | Alas we need to be a bit more complicated as addr_base is contained | |
20100 | in the DIE. | |
20101 | ||
20102 | We don't need to read the entire CU(/TU). | |
20103 | We just need the header and top level die. | |
a1b64ce1 | 20104 | |
3019eac3 | 20105 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20106 | For now we skip this optimization. */ |
3019eac3 DE |
20107 | |
20108 | if (cu != NULL) | |
20109 | { | |
20110 | addr_base = cu->addr_base; | |
20111 | addr_size = cu->header.addr_size; | |
20112 | } | |
20113 | else | |
20114 | { | |
20115 | struct dwarf2_read_addr_index_data aidata; | |
20116 | ||
a1b64ce1 DE |
20117 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
20118 | we need addr_base. */ | |
20119 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
20120 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
20121 | addr_base = aidata.addr_base; |
20122 | addr_size = aidata.addr_size; | |
20123 | } | |
20124 | ||
ed2dc618 SM |
20125 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
20126 | addr_size); | |
3019eac3 DE |
20127 | } |
20128 | ||
57d63ce2 DE |
20129 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
20130 | This is only used by the Fission support. */ | |
3019eac3 | 20131 | |
d521ce57 | 20132 | static const char * |
342587c4 | 20133 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 20134 | { |
ed2dc618 | 20135 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
20136 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20137 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20138 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 20139 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20140 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
20141 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
20142 | struct dwarf2_section_info *str_offsets_section = | |
20143 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 20144 | const gdb_byte *info_ptr; |
3019eac3 | 20145 | ULONGEST str_offset; |
57d63ce2 | 20146 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 20147 | |
73869dc2 DE |
20148 | dwarf2_read_section (objfile, str_section); |
20149 | dwarf2_read_section (objfile, str_offsets_section); | |
20150 | if (str_section->buffer == NULL) | |
57d63ce2 | 20151 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
20152 | " in CU at offset %s [in module %s]"), |
20153 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20154 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 20155 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
20156 | " in CU at offset %s [in module %s]"), |
20157 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20158 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 20159 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
20160 | " section in CU at offset %s [in module %s]"), |
20161 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20162 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
20163 | + str_index * cu->header.offset_size); |
20164 | if (cu->header.offset_size == 4) | |
20165 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20166 | else | |
20167 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20168 | if (str_offset >= str_section->size) |
57d63ce2 | 20169 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20170 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20171 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20172 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20173 | } |
20174 | ||
3019eac3 DE |
20175 | /* Return the length of an LEB128 number in BUF. */ |
20176 | ||
20177 | static int | |
20178 | leb128_size (const gdb_byte *buf) | |
20179 | { | |
20180 | const gdb_byte *begin = buf; | |
20181 | gdb_byte byte; | |
20182 | ||
20183 | while (1) | |
20184 | { | |
20185 | byte = *buf++; | |
20186 | if ((byte & 128) == 0) | |
20187 | return buf - begin; | |
20188 | } | |
20189 | } | |
20190 | ||
c906108c | 20191 | static void |
e142c38c | 20192 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20193 | { |
20194 | switch (lang) | |
20195 | { | |
20196 | case DW_LANG_C89: | |
76bee0cc | 20197 | case DW_LANG_C99: |
0cfd832f | 20198 | case DW_LANG_C11: |
c906108c | 20199 | case DW_LANG_C: |
d1be3247 | 20200 | case DW_LANG_UPC: |
e142c38c | 20201 | cu->language = language_c; |
c906108c | 20202 | break; |
9c37b5ae | 20203 | case DW_LANG_Java: |
c906108c | 20204 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20205 | case DW_LANG_C_plus_plus_11: |
20206 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20207 | cu->language = language_cplus; |
c906108c | 20208 | break; |
6aecb9c2 JB |
20209 | case DW_LANG_D: |
20210 | cu->language = language_d; | |
20211 | break; | |
c906108c SS |
20212 | case DW_LANG_Fortran77: |
20213 | case DW_LANG_Fortran90: | |
b21b22e0 | 20214 | case DW_LANG_Fortran95: |
f7de9aab MW |
20215 | case DW_LANG_Fortran03: |
20216 | case DW_LANG_Fortran08: | |
e142c38c | 20217 | cu->language = language_fortran; |
c906108c | 20218 | break; |
a766d390 DE |
20219 | case DW_LANG_Go: |
20220 | cu->language = language_go; | |
20221 | break; | |
c906108c | 20222 | case DW_LANG_Mips_Assembler: |
e142c38c | 20223 | cu->language = language_asm; |
c906108c SS |
20224 | break; |
20225 | case DW_LANG_Ada83: | |
8aaf0b47 | 20226 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20227 | cu->language = language_ada; |
20228 | break; | |
72019c9c GM |
20229 | case DW_LANG_Modula2: |
20230 | cu->language = language_m2; | |
20231 | break; | |
fe8e67fd PM |
20232 | case DW_LANG_Pascal83: |
20233 | cu->language = language_pascal; | |
20234 | break; | |
22566fbd DJ |
20235 | case DW_LANG_ObjC: |
20236 | cu->language = language_objc; | |
20237 | break; | |
c44af4eb TT |
20238 | case DW_LANG_Rust: |
20239 | case DW_LANG_Rust_old: | |
20240 | cu->language = language_rust; | |
20241 | break; | |
c906108c SS |
20242 | case DW_LANG_Cobol74: |
20243 | case DW_LANG_Cobol85: | |
c906108c | 20244 | default: |
e142c38c | 20245 | cu->language = language_minimal; |
c906108c SS |
20246 | break; |
20247 | } | |
e142c38c | 20248 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20249 | } |
20250 | ||
20251 | /* Return the named attribute or NULL if not there. */ | |
20252 | ||
20253 | static struct attribute * | |
e142c38c | 20254 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20255 | { |
a48e046c | 20256 | for (;;) |
c906108c | 20257 | { |
a48e046c TT |
20258 | unsigned int i; |
20259 | struct attribute *spec = NULL; | |
20260 | ||
20261 | for (i = 0; i < die->num_attrs; ++i) | |
20262 | { | |
20263 | if (die->attrs[i].name == name) | |
20264 | return &die->attrs[i]; | |
20265 | if (die->attrs[i].name == DW_AT_specification | |
20266 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20267 | spec = &die->attrs[i]; | |
20268 | } | |
20269 | ||
20270 | if (!spec) | |
20271 | break; | |
c906108c | 20272 | |
f2f0e013 | 20273 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20274 | } |
c5aa993b | 20275 | |
c906108c SS |
20276 | return NULL; |
20277 | } | |
20278 | ||
348e048f DE |
20279 | /* Return the named attribute or NULL if not there, |
20280 | but do not follow DW_AT_specification, etc. | |
20281 | This is for use in contexts where we're reading .debug_types dies. | |
20282 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
20283 | back up the chain, and we want to go down. */ | |
20284 | ||
20285 | static struct attribute * | |
45e58e77 | 20286 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
20287 | { |
20288 | unsigned int i; | |
20289 | ||
20290 | for (i = 0; i < die->num_attrs; ++i) | |
20291 | if (die->attrs[i].name == name) | |
20292 | return &die->attrs[i]; | |
20293 | ||
20294 | return NULL; | |
20295 | } | |
20296 | ||
7d45c7c3 KB |
20297 | /* Return the string associated with a string-typed attribute, or NULL if it |
20298 | is either not found or is of an incorrect type. */ | |
20299 | ||
20300 | static const char * | |
20301 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20302 | { | |
20303 | struct attribute *attr; | |
20304 | const char *str = NULL; | |
20305 | ||
20306 | attr = dwarf2_attr (die, name, cu); | |
20307 | ||
20308 | if (attr != NULL) | |
20309 | { | |
43988095 | 20310 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
20311 | || attr->form == DW_FORM_string |
20312 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 20313 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20314 | str = DW_STRING (attr); |
20315 | else | |
20316 | complaint (&symfile_complaints, | |
20317 | _("string type expected for attribute %s for " | |
9d8780f0 SM |
20318 | "DIE at %s in module %s"), |
20319 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20320 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20321 | } |
20322 | ||
20323 | return str; | |
20324 | } | |
20325 | ||
05cf31d1 JB |
20326 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20327 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20328 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20329 | |
20330 | static int | |
20331 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20332 | { | |
20333 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20334 | ||
20335 | return (attr && DW_UNSND (attr)); | |
20336 | } | |
20337 | ||
3ca72b44 | 20338 | static int |
e142c38c | 20339 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20340 | { |
05cf31d1 JB |
20341 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20342 | which value is non-zero. However, we have to be careful with | |
20343 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20344 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20345 | end up accidently finding a declaration attribute that belongs | |
20346 | to a different DIE referenced by the specification attribute, | |
20347 | even though the given DIE does not have a declaration attribute. */ | |
20348 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20349 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20350 | } |
20351 | ||
63d06c5c | 20352 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20353 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20354 | containing the return value on output. If there is no |
20355 | specification, but there is an abstract origin, that is | |
20356 | returned. */ | |
63d06c5c DC |
20357 | |
20358 | static struct die_info * | |
f2f0e013 | 20359 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20360 | { |
f2f0e013 DJ |
20361 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20362 | *spec_cu); | |
63d06c5c | 20363 | |
edb3359d DJ |
20364 | if (spec_attr == NULL) |
20365 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20366 | ||
63d06c5c DC |
20367 | if (spec_attr == NULL) |
20368 | return NULL; | |
20369 | else | |
f2f0e013 | 20370 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20371 | } |
c906108c | 20372 | |
527f3840 JK |
20373 | /* Stub for free_line_header to match void * callback types. */ |
20374 | ||
20375 | static void | |
20376 | free_line_header_voidp (void *arg) | |
20377 | { | |
9a3c8263 | 20378 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20379 | |
fff8551c | 20380 | delete lh; |
527f3840 JK |
20381 | } |
20382 | ||
fff8551c PA |
20383 | void |
20384 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20385 | { |
27e0867f | 20386 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20387 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20388 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20389 | |
fff8551c | 20390 | include_dirs.push_back (include_dir); |
debd256d | 20391 | } |
6e70227d | 20392 | |
fff8551c PA |
20393 | void |
20394 | line_header::add_file_name (const char *name, | |
ecfb656c | 20395 | dir_index d_index, |
fff8551c PA |
20396 | unsigned int mod_time, |
20397 | unsigned int length) | |
debd256d | 20398 | { |
27e0867f DE |
20399 | if (dwarf_line_debug >= 2) |
20400 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20401 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20402 | |
ecfb656c | 20403 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20404 | } |
6e70227d | 20405 | |
83769d0b | 20406 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20407 | |
20408 | static struct dwarf2_section_info * | |
20409 | get_debug_line_section (struct dwarf2_cu *cu) | |
20410 | { | |
20411 | struct dwarf2_section_info *section; | |
518817b3 SM |
20412 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20413 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20414 | |
20415 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20416 | DWO file. */ | |
20417 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20418 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20419 | else if (cu->per_cu->is_dwz) | |
20420 | { | |
ed2dc618 | 20421 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20422 | |
20423 | section = &dwz->line; | |
20424 | } | |
20425 | else | |
20426 | section = &dwarf2_per_objfile->line; | |
20427 | ||
20428 | return section; | |
20429 | } | |
20430 | ||
43988095 JK |
20431 | /* Read directory or file name entry format, starting with byte of |
20432 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20433 | entries count and the entries themselves in the described entry | |
20434 | format. */ | |
20435 | ||
20436 | static void | |
ed2dc618 SM |
20437 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20438 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20439 | struct line_header *lh, |
20440 | const struct comp_unit_head *cu_header, | |
20441 | void (*callback) (struct line_header *lh, | |
20442 | const char *name, | |
ecfb656c | 20443 | dir_index d_index, |
43988095 JK |
20444 | unsigned int mod_time, |
20445 | unsigned int length)) | |
20446 | { | |
20447 | gdb_byte format_count, formati; | |
20448 | ULONGEST data_count, datai; | |
20449 | const gdb_byte *buf = *bufp; | |
20450 | const gdb_byte *format_header_data; | |
43988095 JK |
20451 | unsigned int bytes_read; |
20452 | ||
20453 | format_count = read_1_byte (abfd, buf); | |
20454 | buf += 1; | |
20455 | format_header_data = buf; | |
20456 | for (formati = 0; formati < format_count; formati++) | |
20457 | { | |
20458 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20459 | buf += bytes_read; | |
20460 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20461 | buf += bytes_read; | |
20462 | } | |
20463 | ||
20464 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20465 | buf += bytes_read; | |
20466 | for (datai = 0; datai < data_count; datai++) | |
20467 | { | |
20468 | const gdb_byte *format = format_header_data; | |
20469 | struct file_entry fe; | |
20470 | ||
43988095 JK |
20471 | for (formati = 0; formati < format_count; formati++) |
20472 | { | |
ecfb656c | 20473 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20474 | format += bytes_read; |
43988095 | 20475 | |
ecfb656c | 20476 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20477 | format += bytes_read; |
ecfb656c PA |
20478 | |
20479 | gdb::optional<const char *> string; | |
20480 | gdb::optional<unsigned int> uint; | |
20481 | ||
43988095 JK |
20482 | switch (form) |
20483 | { | |
20484 | case DW_FORM_string: | |
ecfb656c | 20485 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20486 | buf += bytes_read; |
20487 | break; | |
20488 | ||
20489 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20490 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20491 | abfd, buf, | |
ecfb656c PA |
20492 | cu_header, |
20493 | &bytes_read)); | |
43988095 JK |
20494 | buf += bytes_read; |
20495 | break; | |
20496 | ||
20497 | case DW_FORM_data1: | |
ecfb656c | 20498 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20499 | buf += 1; |
20500 | break; | |
20501 | ||
20502 | case DW_FORM_data2: | |
ecfb656c | 20503 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20504 | buf += 2; |
20505 | break; | |
20506 | ||
20507 | case DW_FORM_data4: | |
ecfb656c | 20508 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20509 | buf += 4; |
20510 | break; | |
20511 | ||
20512 | case DW_FORM_data8: | |
ecfb656c | 20513 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20514 | buf += 8; |
20515 | break; | |
20516 | ||
20517 | case DW_FORM_udata: | |
ecfb656c | 20518 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20519 | buf += bytes_read; |
20520 | break; | |
20521 | ||
20522 | case DW_FORM_block: | |
20523 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20524 | current GDB. */ | |
20525 | break; | |
20526 | } | |
ecfb656c PA |
20527 | |
20528 | switch (content_type) | |
20529 | { | |
20530 | case DW_LNCT_path: | |
20531 | if (string.has_value ()) | |
20532 | fe.name = *string; | |
20533 | break; | |
20534 | case DW_LNCT_directory_index: | |
20535 | if (uint.has_value ()) | |
20536 | fe.d_index = (dir_index) *uint; | |
20537 | break; | |
20538 | case DW_LNCT_timestamp: | |
20539 | if (uint.has_value ()) | |
20540 | fe.mod_time = *uint; | |
20541 | break; | |
20542 | case DW_LNCT_size: | |
20543 | if (uint.has_value ()) | |
20544 | fe.length = *uint; | |
20545 | break; | |
20546 | case DW_LNCT_MD5: | |
20547 | break; | |
20548 | default: | |
20549 | complaint (&symfile_complaints, | |
20550 | _("Unknown format content type %s"), | |
20551 | pulongest (content_type)); | |
20552 | } | |
43988095 JK |
20553 | } |
20554 | ||
ecfb656c | 20555 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20556 | } |
20557 | ||
20558 | *bufp = buf; | |
20559 | } | |
20560 | ||
debd256d | 20561 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20562 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20563 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20564 | Returns NULL if there is a problem reading the header, e.g., if it |
20565 | has a version we don't understand. | |
debd256d JB |
20566 | |
20567 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20568 | the returned object point into the dwarf line section buffer, |
20569 | and must not be freed. */ | |
ae2de4f8 | 20570 | |
fff8551c | 20571 | static line_header_up |
9c541725 | 20572 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20573 | { |
d521ce57 | 20574 | const gdb_byte *line_ptr; |
c764a876 | 20575 | unsigned int bytes_read, offset_size; |
debd256d | 20576 | int i; |
d521ce57 | 20577 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20578 | struct dwarf2_section_info *section; |
20579 | bfd *abfd; | |
518817b3 SM |
20580 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20581 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20582 | |
36586728 | 20583 | section = get_debug_line_section (cu); |
3019eac3 DE |
20584 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20585 | if (section->buffer == NULL) | |
debd256d | 20586 | { |
3019eac3 DE |
20587 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
20588 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
20589 | else | |
20590 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
20591 | return 0; |
20592 | } | |
20593 | ||
fceca515 DE |
20594 | /* We can't do this until we know the section is non-empty. |
20595 | Only then do we know we have such a section. */ | |
a32a8923 | 20596 | abfd = get_section_bfd_owner (section); |
fceca515 | 20597 | |
a738430d MK |
20598 | /* Make sure that at least there's room for the total_length field. |
20599 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20600 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20601 | { |
4d3c2250 | 20602 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20603 | return 0; |
20604 | } | |
20605 | ||
fff8551c | 20606 | line_header_up lh (new line_header ()); |
debd256d | 20607 | |
9c541725 | 20608 | lh->sect_off = sect_off; |
527f3840 JK |
20609 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20610 | ||
9c541725 | 20611 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20612 | |
a738430d | 20613 | /* Read in the header. */ |
6e70227d | 20614 | lh->total_length = |
c764a876 DE |
20615 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20616 | &bytes_read, &offset_size); | |
debd256d | 20617 | line_ptr += bytes_read; |
3019eac3 | 20618 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20619 | { |
4d3c2250 | 20620 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20621 | return 0; |
20622 | } | |
20623 | lh->statement_program_end = line_ptr + lh->total_length; | |
20624 | lh->version = read_2_bytes (abfd, line_ptr); | |
20625 | line_ptr += 2; | |
43988095 | 20626 | if (lh->version > 5) |
cd366ee8 DE |
20627 | { |
20628 | /* This is a version we don't understand. The format could have | |
20629 | changed in ways we don't handle properly so just punt. */ | |
20630 | complaint (&symfile_complaints, | |
20631 | _("unsupported version in .debug_line section")); | |
20632 | return NULL; | |
20633 | } | |
43988095 JK |
20634 | if (lh->version >= 5) |
20635 | { | |
20636 | gdb_byte segment_selector_size; | |
20637 | ||
20638 | /* Skip address size. */ | |
20639 | read_1_byte (abfd, line_ptr); | |
20640 | line_ptr += 1; | |
20641 | ||
20642 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20643 | line_ptr += 1; | |
20644 | if (segment_selector_size != 0) | |
20645 | { | |
20646 | complaint (&symfile_complaints, | |
20647 | _("unsupported segment selector size %u " | |
20648 | "in .debug_line section"), | |
20649 | segment_selector_size); | |
20650 | return NULL; | |
20651 | } | |
20652 | } | |
c764a876 DE |
20653 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20654 | line_ptr += offset_size; | |
debd256d JB |
20655 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20656 | line_ptr += 1; | |
2dc7f7b3 TT |
20657 | if (lh->version >= 4) |
20658 | { | |
20659 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20660 | line_ptr += 1; | |
20661 | } | |
20662 | else | |
20663 | lh->maximum_ops_per_instruction = 1; | |
20664 | ||
20665 | if (lh->maximum_ops_per_instruction == 0) | |
20666 | { | |
20667 | lh->maximum_ops_per_instruction = 1; | |
20668 | complaint (&symfile_complaints, | |
3e43a32a MS |
20669 | _("invalid maximum_ops_per_instruction " |
20670 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
20671 | } |
20672 | ||
debd256d JB |
20673 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20674 | line_ptr += 1; | |
20675 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20676 | line_ptr += 1; | |
20677 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20678 | line_ptr += 1; | |
20679 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20680 | line_ptr += 1; | |
fff8551c | 20681 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20682 | |
20683 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20684 | for (i = 1; i < lh->opcode_base; ++i) | |
20685 | { | |
20686 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20687 | line_ptr += 1; | |
20688 | } | |
20689 | ||
43988095 | 20690 | if (lh->version >= 5) |
debd256d | 20691 | { |
43988095 | 20692 | /* Read directory table. */ |
ed2dc618 SM |
20693 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20694 | &cu->header, | |
fff8551c | 20695 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20696 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20697 | unsigned int length) |
20698 | { | |
20699 | lh->add_include_dir (name); | |
20700 | }); | |
debd256d | 20701 | |
43988095 | 20702 | /* Read file name table. */ |
ed2dc618 SM |
20703 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20704 | &cu->header, | |
fff8551c | 20705 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20706 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20707 | unsigned int length) |
20708 | { | |
ecfb656c | 20709 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20710 | }); |
43988095 JK |
20711 | } |
20712 | else | |
debd256d | 20713 | { |
43988095 JK |
20714 | /* Read directory table. */ |
20715 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20716 | { | |
20717 | line_ptr += bytes_read; | |
fff8551c | 20718 | lh->add_include_dir (cur_dir); |
43988095 | 20719 | } |
debd256d JB |
20720 | line_ptr += bytes_read; |
20721 | ||
43988095 JK |
20722 | /* Read file name table. */ |
20723 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20724 | { | |
ecfb656c PA |
20725 | unsigned int mod_time, length; |
20726 | dir_index d_index; | |
43988095 JK |
20727 | |
20728 | line_ptr += bytes_read; | |
ecfb656c | 20729 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20730 | line_ptr += bytes_read; |
20731 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20732 | line_ptr += bytes_read; | |
20733 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20734 | line_ptr += bytes_read; | |
20735 | ||
ecfb656c | 20736 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20737 | } |
20738 | line_ptr += bytes_read; | |
debd256d | 20739 | } |
6e70227d | 20740 | lh->statement_program_start = line_ptr; |
debd256d | 20741 | |
3019eac3 | 20742 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 20743 | complaint (&symfile_complaints, |
3e43a32a MS |
20744 | _("line number info header doesn't " |
20745 | "fit in `.debug_line' section")); | |
debd256d | 20746 | |
debd256d JB |
20747 | return lh; |
20748 | } | |
c906108c | 20749 | |
c6da4cef DE |
20750 | /* Subroutine of dwarf_decode_lines to simplify it. |
20751 | Return the file name of the psymtab for included file FILE_INDEX | |
20752 | in line header LH of PST. | |
20753 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20754 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20755 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20756 | |
d521ce57 | 20757 | static const char * |
c6da4cef DE |
20758 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20759 | const struct partial_symtab *pst, | |
c89b44cd TT |
20760 | const char *comp_dir, |
20761 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20762 | { |
8c43009f | 20763 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20764 | const char *include_name = fe.name; |
20765 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20766 | const char *pst_filename; |
c6da4cef DE |
20767 | int file_is_pst; |
20768 | ||
8c43009f | 20769 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20770 | |
c89b44cd | 20771 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20772 | if (!IS_ABSOLUTE_PATH (include_name) |
20773 | && (dir_name != NULL || comp_dir != NULL)) | |
20774 | { | |
20775 | /* Avoid creating a duplicate psymtab for PST. | |
20776 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20777 | Before we do the comparison, however, we need to account | |
20778 | for DIR_NAME and COMP_DIR. | |
20779 | First prepend dir_name (if non-NULL). If we still don't | |
20780 | have an absolute path prepend comp_dir (if non-NULL). | |
20781 | However, the directory we record in the include-file's | |
20782 | psymtab does not contain COMP_DIR (to match the | |
20783 | corresponding symtab(s)). | |
20784 | ||
20785 | Example: | |
20786 | ||
20787 | bash$ cd /tmp | |
20788 | bash$ gcc -g ./hello.c | |
20789 | include_name = "hello.c" | |
20790 | dir_name = "." | |
20791 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20792 | DW_AT_name = "./hello.c" |
20793 | ||
20794 | */ | |
c6da4cef DE |
20795 | |
20796 | if (dir_name != NULL) | |
20797 | { | |
c89b44cd TT |
20798 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20799 | include_name, (char *) NULL)); | |
20800 | include_name = name_holder->get (); | |
c6da4cef | 20801 | include_name_to_compare = include_name; |
c6da4cef DE |
20802 | } |
20803 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20804 | { | |
c89b44cd TT |
20805 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20806 | include_name, (char *) NULL)); | |
20807 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20808 | } |
20809 | } | |
20810 | ||
20811 | pst_filename = pst->filename; | |
c89b44cd | 20812 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20813 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20814 | { | |
c89b44cd TT |
20815 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20816 | pst_filename, (char *) NULL)); | |
20817 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20818 | } |
20819 | ||
1e3fad37 | 20820 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20821 | |
c6da4cef DE |
20822 | if (file_is_pst) |
20823 | return NULL; | |
20824 | return include_name; | |
20825 | } | |
20826 | ||
d9b3de22 DE |
20827 | /* State machine to track the state of the line number program. */ |
20828 | ||
6f77053d | 20829 | class lnp_state_machine |
d9b3de22 | 20830 | { |
6f77053d PA |
20831 | public: |
20832 | /* Initialize a machine state for the start of a line number | |
20833 | program. */ | |
20834 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
20835 | ||
8c43009f PA |
20836 | file_entry *current_file () |
20837 | { | |
20838 | /* lh->file_names is 0-based, but the file name numbers in the | |
20839 | statement program are 1-based. */ | |
6f77053d PA |
20840 | return m_line_header->file_name_at (m_file); |
20841 | } | |
20842 | ||
20843 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20844 | we're processing the end of a sequence. */ | |
20845 | void record_line (bool end_sequence); | |
20846 | ||
20847 | /* Check address and if invalid nop-out the rest of the lines in this | |
20848 | sequence. */ | |
20849 | void check_line_address (struct dwarf2_cu *cu, | |
20850 | const gdb_byte *line_ptr, | |
20851 | CORE_ADDR lowpc, CORE_ADDR address); | |
20852 | ||
20853 | void handle_set_discriminator (unsigned int discriminator) | |
20854 | { | |
20855 | m_discriminator = discriminator; | |
20856 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20857 | } | |
20858 | ||
20859 | /* Handle DW_LNE_set_address. */ | |
20860 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20861 | { | |
20862 | m_op_index = 0; | |
20863 | address += baseaddr; | |
20864 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20865 | } | |
20866 | ||
20867 | /* Handle DW_LNS_advance_pc. */ | |
20868 | void handle_advance_pc (CORE_ADDR adjust); | |
20869 | ||
20870 | /* Handle a special opcode. */ | |
20871 | void handle_special_opcode (unsigned char op_code); | |
20872 | ||
20873 | /* Handle DW_LNS_advance_line. */ | |
20874 | void handle_advance_line (int line_delta) | |
20875 | { | |
20876 | advance_line (line_delta); | |
20877 | } | |
20878 | ||
20879 | /* Handle DW_LNS_set_file. */ | |
20880 | void handle_set_file (file_name_index file); | |
20881 | ||
20882 | /* Handle DW_LNS_negate_stmt. */ | |
20883 | void handle_negate_stmt () | |
20884 | { | |
20885 | m_is_stmt = !m_is_stmt; | |
20886 | } | |
20887 | ||
20888 | /* Handle DW_LNS_const_add_pc. */ | |
20889 | void handle_const_add_pc (); | |
20890 | ||
20891 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20892 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20893 | { | |
20894 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20895 | m_op_index = 0; | |
20896 | } | |
20897 | ||
20898 | /* Handle DW_LNS_copy. */ | |
20899 | void handle_copy () | |
20900 | { | |
20901 | record_line (false); | |
20902 | m_discriminator = 0; | |
20903 | } | |
20904 | ||
20905 | /* Handle DW_LNE_end_sequence. */ | |
20906 | void handle_end_sequence () | |
20907 | { | |
20908 | m_record_line_callback = ::record_line; | |
20909 | } | |
20910 | ||
20911 | private: | |
20912 | /* Advance the line by LINE_DELTA. */ | |
20913 | void advance_line (int line_delta) | |
20914 | { | |
20915 | m_line += line_delta; | |
20916 | ||
20917 | if (line_delta != 0) | |
20918 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20919 | } |
20920 | ||
6f77053d PA |
20921 | gdbarch *m_gdbarch; |
20922 | ||
20923 | /* True if we're recording lines. | |
20924 | Otherwise we're building partial symtabs and are just interested in | |
20925 | finding include files mentioned by the line number program. */ | |
20926 | bool m_record_lines_p; | |
20927 | ||
8c43009f | 20928 | /* The line number header. */ |
6f77053d | 20929 | line_header *m_line_header; |
8c43009f | 20930 | |
6f77053d PA |
20931 | /* These are part of the standard DWARF line number state machine, |
20932 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20933 | |
6f77053d | 20934 | unsigned char m_op_index = 0; |
8c43009f | 20935 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20936 | file_name_index m_file = (file_name_index) 1; |
20937 | unsigned int m_line = 1; | |
20938 | ||
20939 | /* These are initialized in the constructor. */ | |
20940 | ||
20941 | CORE_ADDR m_address; | |
20942 | bool m_is_stmt; | |
20943 | unsigned int m_discriminator; | |
d9b3de22 DE |
20944 | |
20945 | /* Additional bits of state we need to track. */ | |
20946 | ||
20947 | /* The last file that we called dwarf2_start_subfile for. | |
20948 | This is only used for TLLs. */ | |
6f77053d | 20949 | unsigned int m_last_file = 0; |
d9b3de22 | 20950 | /* The last file a line number was recorded for. */ |
6f77053d | 20951 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
20952 | |
20953 | /* The function to call to record a line. */ | |
6f77053d | 20954 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
20955 | |
20956 | /* The last line number that was recorded, used to coalesce | |
20957 | consecutive entries for the same line. This can happen, for | |
20958 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20959 | unsigned int m_last_line = 0; |
20960 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20961 | }; |
d9b3de22 | 20962 | |
6f77053d PA |
20963 | void |
20964 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20965 | { | |
20966 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20967 | / m_line_header->maximum_ops_per_instruction) | |
20968 | * m_line_header->minimum_instruction_length); | |
20969 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20970 | m_op_index = ((m_op_index + adjust) | |
20971 | % m_line_header->maximum_ops_per_instruction); | |
20972 | } | |
d9b3de22 | 20973 | |
6f77053d PA |
20974 | void |
20975 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20976 | { |
6f77053d PA |
20977 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20978 | CORE_ADDR addr_adj = (((m_op_index | |
20979 | + (adj_opcode / m_line_header->line_range)) | |
20980 | / m_line_header->maximum_ops_per_instruction) | |
20981 | * m_line_header->minimum_instruction_length); | |
20982 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20983 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20984 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20985 | |
6f77053d PA |
20986 | int line_delta = (m_line_header->line_base |
20987 | + (adj_opcode % m_line_header->line_range)); | |
20988 | advance_line (line_delta); | |
20989 | record_line (false); | |
20990 | m_discriminator = 0; | |
20991 | } | |
d9b3de22 | 20992 | |
6f77053d PA |
20993 | void |
20994 | lnp_state_machine::handle_set_file (file_name_index file) | |
20995 | { | |
20996 | m_file = file; | |
20997 | ||
20998 | const file_entry *fe = current_file (); | |
20999 | if (fe == NULL) | |
21000 | dwarf2_debug_line_missing_file_complaint (); | |
21001 | else if (m_record_lines_p) | |
21002 | { | |
21003 | const char *dir = fe->include_dir (m_line_header); | |
21004 | ||
21005 | m_last_subfile = current_subfile; | |
21006 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
21007 | dwarf2_start_subfile (fe->name, dir); | |
21008 | } | |
21009 | } | |
21010 | ||
21011 | void | |
21012 | lnp_state_machine::handle_const_add_pc () | |
21013 | { | |
21014 | CORE_ADDR adjust | |
21015 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21016 | ||
21017 | CORE_ADDR addr_adj | |
21018 | = (((m_op_index + adjust) | |
21019 | / m_line_header->maximum_ops_per_instruction) | |
21020 | * m_line_header->minimum_instruction_length); | |
21021 | ||
21022 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21023 | m_op_index = ((m_op_index + adjust) | |
21024 | % m_line_header->maximum_ops_per_instruction); | |
21025 | } | |
d9b3de22 | 21026 | |
c91513d8 PP |
21027 | /* Ignore this record_line request. */ |
21028 | ||
21029 | static void | |
21030 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
21031 | { | |
21032 | return; | |
21033 | } | |
21034 | ||
a05a36a5 DE |
21035 | /* Return non-zero if we should add LINE to the line number table. |
21036 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21037 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21038 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21039 | had a non-zero discriminator. | |
21040 | ||
21041 | We have to be careful in the presence of discriminators. | |
21042 | E.g., for this line: | |
21043 | ||
21044 | for (i = 0; i < 100000; i++); | |
21045 | ||
21046 | clang can emit four line number entries for that one line, | |
21047 | each with a different discriminator. | |
21048 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21049 | ||
21050 | However, we want gdb to coalesce all four entries into one. | |
21051 | Otherwise the user could stepi into the middle of the line and | |
21052 | gdb would get confused about whether the pc really was in the | |
21053 | middle of the line. | |
21054 | ||
21055 | Things are further complicated by the fact that two consecutive | |
21056 | line number entries for the same line is a heuristic used by gcc | |
21057 | to denote the end of the prologue. So we can't just discard duplicate | |
21058 | entries, we have to be selective about it. The heuristic we use is | |
21059 | that we only collapse consecutive entries for the same line if at least | |
21060 | one of those entries has a non-zero discriminator. PR 17276. | |
21061 | ||
21062 | Note: Addresses in the line number state machine can never go backwards | |
21063 | within one sequence, thus this coalescing is ok. */ | |
21064 | ||
21065 | static int | |
21066 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
21067 | int line_has_non_zero_discriminator, | |
21068 | struct subfile *last_subfile) | |
21069 | { | |
21070 | if (current_subfile != last_subfile) | |
21071 | return 1; | |
21072 | if (line != last_line) | |
21073 | return 1; | |
21074 | /* Same line for the same file that we've seen already. | |
21075 | As a last check, for pr 17276, only record the line if the line | |
21076 | has never had a non-zero discriminator. */ | |
21077 | if (!line_has_non_zero_discriminator) | |
21078 | return 1; | |
21079 | return 0; | |
21080 | } | |
21081 | ||
252a6764 DE |
21082 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
21083 | in the line table of subfile SUBFILE. */ | |
21084 | ||
21085 | static void | |
d9b3de22 DE |
21086 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
21087 | unsigned int line, CORE_ADDR address, | |
21088 | record_line_ftype p_record_line) | |
252a6764 DE |
21089 | { |
21090 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21091 | ||
27e0867f DE |
21092 | if (dwarf_line_debug) |
21093 | { | |
21094 | fprintf_unfiltered (gdb_stdlog, | |
21095 | "Recording line %u, file %s, address %s\n", | |
21096 | line, lbasename (subfile->name), | |
21097 | paddress (gdbarch, address)); | |
21098 | } | |
21099 | ||
d5962de5 | 21100 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
21101 | } |
21102 | ||
21103 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21104 | Mark the end of a set of line number records. | |
d9b3de22 | 21105 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21106 | If SUBFILE is NULL the request is ignored. */ |
21107 | ||
21108 | static void | |
21109 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
21110 | CORE_ADDR address, record_line_ftype p_record_line) | |
21111 | { | |
27e0867f DE |
21112 | if (subfile == NULL) |
21113 | return; | |
21114 | ||
21115 | if (dwarf_line_debug) | |
21116 | { | |
21117 | fprintf_unfiltered (gdb_stdlog, | |
21118 | "Finishing current line, file %s, address %s\n", | |
21119 | lbasename (subfile->name), | |
21120 | paddress (gdbarch, address)); | |
21121 | } | |
21122 | ||
d9b3de22 DE |
21123 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
21124 | } | |
21125 | ||
6f77053d PA |
21126 | void |
21127 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21128 | { |
d9b3de22 DE |
21129 | if (dwarf_line_debug) |
21130 | { | |
21131 | fprintf_unfiltered (gdb_stdlog, | |
21132 | "Processing actual line %u: file %u," | |
21133 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
21134 | m_line, to_underlying (m_file), |
21135 | paddress (m_gdbarch, m_address), | |
21136 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
21137 | } |
21138 | ||
6f77053d | 21139 | file_entry *fe = current_file (); |
8c43009f PA |
21140 | |
21141 | if (fe == NULL) | |
d9b3de22 DE |
21142 | dwarf2_debug_line_missing_file_complaint (); |
21143 | /* For now we ignore lines not starting on an instruction boundary. | |
21144 | But not when processing end_sequence for compatibility with the | |
21145 | previous version of the code. */ | |
6f77053d | 21146 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21147 | { |
8c43009f | 21148 | fe->included_p = 1; |
6f77053d | 21149 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 21150 | { |
6f77053d | 21151 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 21152 | { |
6f77053d PA |
21153 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
21154 | m_address, m_record_line_callback); | |
d9b3de22 DE |
21155 | } |
21156 | ||
21157 | if (!end_sequence) | |
21158 | { | |
6f77053d PA |
21159 | if (dwarf_record_line_p (m_line, m_last_line, |
21160 | m_line_has_non_zero_discriminator, | |
21161 | m_last_subfile)) | |
d9b3de22 | 21162 | { |
6f77053d PA |
21163 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
21164 | m_line, m_address, | |
21165 | m_record_line_callback); | |
d9b3de22 | 21166 | } |
6f77053d PA |
21167 | m_last_subfile = current_subfile; |
21168 | m_last_line = m_line; | |
d9b3de22 DE |
21169 | } |
21170 | } | |
21171 | } | |
21172 | } | |
21173 | ||
6f77053d PA |
21174 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
21175 | bool record_lines_p) | |
d9b3de22 | 21176 | { |
6f77053d PA |
21177 | m_gdbarch = arch; |
21178 | m_record_lines_p = record_lines_p; | |
21179 | m_line_header = lh; | |
d9b3de22 | 21180 | |
6f77053d | 21181 | m_record_line_callback = ::record_line; |
d9b3de22 | 21182 | |
d9b3de22 DE |
21183 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21184 | was a line entry for it so that the backend has a chance to adjust it | |
21185 | and also record it in case it needs it. This is currently used by MIPS | |
21186 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21187 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21188 | m_is_stmt = lh->default_is_stmt; | |
21189 | m_discriminator = 0; | |
252a6764 DE |
21190 | } |
21191 | ||
6f77053d PA |
21192 | void |
21193 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21194 | const gdb_byte *line_ptr, | |
21195 | CORE_ADDR lowpc, CORE_ADDR address) | |
924c2928 DE |
21196 | { |
21197 | /* If address < lowpc then it's not a usable value, it's outside the | |
21198 | pc range of the CU. However, we restrict the test to only address | |
21199 | values of zero to preserve GDB's previous behaviour which is to | |
21200 | handle the specific case of a function being GC'd by the linker. */ | |
21201 | ||
21202 | if (address == 0 && address < lowpc) | |
21203 | { | |
21204 | /* This line table is for a function which has been | |
21205 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21206 | ||
518817b3 | 21207 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
21208 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21209 | ||
21210 | complaint (&symfile_complaints, | |
21211 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
21212 | line_offset, objfile_name (objfile)); | |
6f77053d PA |
21213 | m_record_line_callback = noop_record_line; |
21214 | /* Note: record_line_callback is left as noop_record_line until | |
21215 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
21216 | } |
21217 | } | |
21218 | ||
f3f5162e | 21219 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21220 | Process the line number information in LH. |
21221 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21222 | program in order to set included_p for every referenced header. */ | |
debd256d | 21223 | |
c906108c | 21224 | static void |
43f3e411 DE |
21225 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21226 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21227 | { |
d521ce57 TT |
21228 | const gdb_byte *line_ptr, *extended_end; |
21229 | const gdb_byte *line_end; | |
a8c50c1f | 21230 | unsigned int bytes_read, extended_len; |
699ca60a | 21231 | unsigned char op_code, extended_op; |
e142c38c | 21232 | CORE_ADDR baseaddr; |
518817b3 | 21233 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21234 | bfd *abfd = objfile->obfd; |
fbf65064 | 21235 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
21236 | /* True if we're recording line info (as opposed to building partial |
21237 | symtabs and just interested in finding include files mentioned by | |
21238 | the line number program). */ | |
21239 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
21240 | |
21241 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21242 | |
debd256d JB |
21243 | line_ptr = lh->statement_program_start; |
21244 | line_end = lh->statement_program_end; | |
c906108c SS |
21245 | |
21246 | /* Read the statement sequences until there's nothing left. */ | |
21247 | while (line_ptr < line_end) | |
21248 | { | |
6f77053d PA |
21249 | /* The DWARF line number program state machine. Reset the state |
21250 | machine at the start of each sequence. */ | |
21251 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
21252 | bool end_sequence = false; | |
d9b3de22 | 21253 | |
8c43009f | 21254 | if (record_lines_p) |
c906108c | 21255 | { |
8c43009f PA |
21256 | /* Start a subfile for the current file of the state |
21257 | machine. */ | |
21258 | const file_entry *fe = state_machine.current_file (); | |
21259 | ||
21260 | if (fe != NULL) | |
21261 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
21262 | } |
21263 | ||
a738430d | 21264 | /* Decode the table. */ |
d9b3de22 | 21265 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21266 | { |
21267 | op_code = read_1_byte (abfd, line_ptr); | |
21268 | line_ptr += 1; | |
9aa1fe7e | 21269 | |
debd256d | 21270 | if (op_code >= lh->opcode_base) |
6e70227d | 21271 | { |
8e07a239 | 21272 | /* Special opcode. */ |
6f77053d | 21273 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21274 | } |
21275 | else switch (op_code) | |
c906108c SS |
21276 | { |
21277 | case DW_LNS_extended_op: | |
3e43a32a MS |
21278 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21279 | &bytes_read); | |
473b7be6 | 21280 | line_ptr += bytes_read; |
a8c50c1f | 21281 | extended_end = line_ptr + extended_len; |
c906108c SS |
21282 | extended_op = read_1_byte (abfd, line_ptr); |
21283 | line_ptr += 1; | |
21284 | switch (extended_op) | |
21285 | { | |
21286 | case DW_LNE_end_sequence: | |
6f77053d PA |
21287 | state_machine.handle_end_sequence (); |
21288 | end_sequence = true; | |
c906108c SS |
21289 | break; |
21290 | case DW_LNE_set_address: | |
d9b3de22 DE |
21291 | { |
21292 | CORE_ADDR address | |
21293 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 21294 | line_ptr += bytes_read; |
6f77053d PA |
21295 | |
21296 | state_machine.check_line_address (cu, line_ptr, | |
21297 | lowpc, address); | |
21298 | state_machine.handle_set_address (baseaddr, address); | |
d9b3de22 | 21299 | } |
c906108c SS |
21300 | break; |
21301 | case DW_LNE_define_file: | |
debd256d | 21302 | { |
d521ce57 | 21303 | const char *cur_file; |
ecfb656c PA |
21304 | unsigned int mod_time, length; |
21305 | dir_index dindex; | |
6e70227d | 21306 | |
3e43a32a MS |
21307 | cur_file = read_direct_string (abfd, line_ptr, |
21308 | &bytes_read); | |
debd256d | 21309 | line_ptr += bytes_read; |
ecfb656c | 21310 | dindex = (dir_index) |
debd256d JB |
21311 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21312 | line_ptr += bytes_read; | |
21313 | mod_time = | |
21314 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21315 | line_ptr += bytes_read; | |
21316 | length = | |
21317 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21318 | line_ptr += bytes_read; | |
ecfb656c | 21319 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21320 | } |
c906108c | 21321 | break; |
d0c6ba3d | 21322 | case DW_LNE_set_discriminator: |
6f77053d PA |
21323 | { |
21324 | /* The discriminator is not interesting to the | |
21325 | debugger; just ignore it. We still need to | |
21326 | check its value though: | |
21327 | if there are consecutive entries for the same | |
21328 | (non-prologue) line we want to coalesce them. | |
21329 | PR 17276. */ | |
21330 | unsigned int discr | |
21331 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21332 | line_ptr += bytes_read; | |
21333 | ||
21334 | state_machine.handle_set_discriminator (discr); | |
21335 | } | |
d0c6ba3d | 21336 | break; |
c906108c | 21337 | default: |
4d3c2250 | 21338 | complaint (&symfile_complaints, |
e2e0b3e5 | 21339 | _("mangled .debug_line section")); |
debd256d | 21340 | return; |
c906108c | 21341 | } |
a8c50c1f DJ |
21342 | /* Make sure that we parsed the extended op correctly. If e.g. |
21343 | we expected a different address size than the producer used, | |
21344 | we may have read the wrong number of bytes. */ | |
21345 | if (line_ptr != extended_end) | |
21346 | { | |
21347 | complaint (&symfile_complaints, | |
21348 | _("mangled .debug_line section")); | |
21349 | return; | |
21350 | } | |
c906108c SS |
21351 | break; |
21352 | case DW_LNS_copy: | |
6f77053d | 21353 | state_machine.handle_copy (); |
c906108c SS |
21354 | break; |
21355 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21356 | { |
21357 | CORE_ADDR adjust | |
21358 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21359 | line_ptr += bytes_read; |
6f77053d PA |
21360 | |
21361 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21362 | } |
c906108c SS |
21363 | break; |
21364 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21365 | { |
21366 | int line_delta | |
21367 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21368 | line_ptr += bytes_read; |
6f77053d PA |
21369 | |
21370 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21371 | } |
c906108c SS |
21372 | break; |
21373 | case DW_LNS_set_file: | |
d9b3de22 | 21374 | { |
6f77053d | 21375 | file_name_index file |
ecfb656c PA |
21376 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21377 | &bytes_read); | |
d9b3de22 | 21378 | line_ptr += bytes_read; |
8c43009f | 21379 | |
6f77053d | 21380 | state_machine.handle_set_file (file); |
d9b3de22 | 21381 | } |
c906108c SS |
21382 | break; |
21383 | case DW_LNS_set_column: | |
0ad93d4f | 21384 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21385 | line_ptr += bytes_read; |
21386 | break; | |
21387 | case DW_LNS_negate_stmt: | |
6f77053d | 21388 | state_machine.handle_negate_stmt (); |
c906108c SS |
21389 | break; |
21390 | case DW_LNS_set_basic_block: | |
c906108c | 21391 | break; |
c2c6d25f JM |
21392 | /* Add to the address register of the state machine the |
21393 | address increment value corresponding to special opcode | |
a738430d MK |
21394 | 255. I.e., this value is scaled by the minimum |
21395 | instruction length since special opcode 255 would have | |
b021a221 | 21396 | scaled the increment. */ |
c906108c | 21397 | case DW_LNS_const_add_pc: |
6f77053d | 21398 | state_machine.handle_const_add_pc (); |
c906108c SS |
21399 | break; |
21400 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21401 | { |
6f77053d | 21402 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21403 | line_ptr += 2; |
6f77053d PA |
21404 | |
21405 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21406 | } |
c906108c | 21407 | break; |
9aa1fe7e | 21408 | default: |
a738430d MK |
21409 | { |
21410 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21411 | int i; |
a738430d | 21412 | |
debd256d | 21413 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21414 | { |
21415 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21416 | line_ptr += bytes_read; | |
21417 | } | |
21418 | } | |
c906108c SS |
21419 | } |
21420 | } | |
d9b3de22 DE |
21421 | |
21422 | if (!end_sequence) | |
21423 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21424 | ||
21425 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21426 | in which case we still finish recording the last line). */ | |
6f77053d | 21427 | state_machine.record_line (true); |
c906108c | 21428 | } |
f3f5162e DE |
21429 | } |
21430 | ||
21431 | /* Decode the Line Number Program (LNP) for the given line_header | |
21432 | structure and CU. The actual information extracted and the type | |
21433 | of structures created from the LNP depends on the value of PST. | |
21434 | ||
21435 | 1. If PST is NULL, then this procedure uses the data from the program | |
21436 | to create all necessary symbol tables, and their linetables. | |
21437 | ||
21438 | 2. If PST is not NULL, this procedure reads the program to determine | |
21439 | the list of files included by the unit represented by PST, and | |
21440 | builds all the associated partial symbol tables. | |
21441 | ||
21442 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21443 | It is used for relative paths in the line table. | |
21444 | NOTE: When processing partial symtabs (pst != NULL), | |
21445 | comp_dir == pst->dirname. | |
21446 | ||
21447 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21448 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21449 | symtab we don't use it in the name of the psymtabs we create. | |
21450 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21451 | A good testcase for this is mb-inline.exp. |
21452 | ||
527f3840 JK |
21453 | LOWPC is the lowest address in CU (or 0 if not known). |
21454 | ||
21455 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21456 | for its PC<->lines mapping information. Otherwise only the filename | |
21457 | table is read in. */ | |
f3f5162e DE |
21458 | |
21459 | static void | |
21460 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21461 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21462 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21463 | { |
518817b3 | 21464 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21465 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21466 | |
527f3840 JK |
21467 | if (decode_mapping) |
21468 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21469 | |
21470 | if (decode_for_pst_p) | |
21471 | { | |
21472 | int file_index; | |
21473 | ||
21474 | /* Now that we're done scanning the Line Header Program, we can | |
21475 | create the psymtab of each included file. */ | |
fff8551c | 21476 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21477 | if (lh->file_names[file_index].included_p == 1) |
21478 | { | |
c89b44cd | 21479 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21480 | const char *include_name = |
c89b44cd TT |
21481 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21482 | &name_holder); | |
c6da4cef | 21483 | if (include_name != NULL) |
aaa75496 JB |
21484 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21485 | } | |
21486 | } | |
cb1df416 DJ |
21487 | else |
21488 | { | |
21489 | /* Make sure a symtab is created for every file, even files | |
21490 | which contain only variables (i.e. no code with associated | |
21491 | line numbers). */ | |
43f3e411 | 21492 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 21493 | int i; |
cb1df416 | 21494 | |
fff8551c | 21495 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21496 | { |
8c43009f | 21497 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21498 | |
8c43009f | 21499 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 21500 | |
cb1df416 | 21501 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
21502 | { |
21503 | current_subfile->symtab | |
21504 | = allocate_symtab (cust, current_subfile->name); | |
21505 | } | |
8c43009f | 21506 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
21507 | } |
21508 | } | |
c906108c SS |
21509 | } |
21510 | ||
21511 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21512 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21513 | or NULL if not known. |
c906108c SS |
21514 | This routine tries to keep line numbers from identical absolute and |
21515 | relative file names in a common subfile. | |
21516 | ||
21517 | Using the `list' example from the GDB testsuite, which resides in | |
21518 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21519 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21520 | ||
c5aa993b | 21521 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21522 | DW_AT_comp_dir: /compdir |
357e46e7 | 21523 | files.files[0].name: list0.h |
c5aa993b | 21524 | files.files[0].dir: /srcdir |
357e46e7 | 21525 | files.files[1].name: list0.c |
c5aa993b | 21526 | files.files[1].dir: /srcdir |
c906108c SS |
21527 | |
21528 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21529 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21530 | start_subfile will ensure that this happens provided that we pass the | |
21531 | concatenation of files.files[1].dir and files.files[1].name as the | |
21532 | subfile's name. */ | |
c906108c SS |
21533 | |
21534 | static void | |
4d663531 | 21535 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 21536 | { |
d521ce57 | 21537 | char *copy = NULL; |
4f1520fb | 21538 | |
4d663531 | 21539 | /* In order not to lose the line information directory, |
4f1520fb FR |
21540 | we concatenate it to the filename when it makes sense. |
21541 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21542 | information): ``The directory index is ignored for file names | |
21543 | that represent full path names''. Thus ignoring dirname in the | |
21544 | `else' branch below isn't an issue. */ | |
c906108c | 21545 | |
d5166ae1 | 21546 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21547 | { |
21548 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21549 | filename = copy; | |
21550 | } | |
c906108c | 21551 | |
4d663531 | 21552 | start_subfile (filename); |
4f1520fb | 21553 | |
d521ce57 TT |
21554 | if (copy != NULL) |
21555 | xfree (copy); | |
c906108c SS |
21556 | } |
21557 | ||
f4dc4d17 DE |
21558 | /* Start a symtab for DWARF. |
21559 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
21560 | ||
43f3e411 | 21561 | static struct compunit_symtab * |
f4dc4d17 | 21562 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21563 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21564 | { |
43f3e411 | 21565 | struct compunit_symtab *cust |
518817b3 SM |
21566 | = start_symtab (cu->per_cu->dwarf2_per_objfile->objfile, name, comp_dir, |
21567 | low_pc, cu->language); | |
43f3e411 | 21568 | |
f4dc4d17 DE |
21569 | record_debugformat ("DWARF 2"); |
21570 | record_producer (cu->producer); | |
21571 | ||
21572 | /* We assume that we're processing GCC output. */ | |
21573 | processing_gcc_compilation = 2; | |
21574 | ||
4d4ec4e5 | 21575 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
21576 | |
21577 | return cust; | |
f4dc4d17 DE |
21578 | } |
21579 | ||
4c2df51b DJ |
21580 | static void |
21581 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21582 | struct dwarf2_cu *cu) |
4c2df51b | 21583 | { |
518817b3 | 21584 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21585 | struct comp_unit_head *cu_header = &cu->header; |
21586 | ||
4c2df51b DJ |
21587 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21588 | code here to turn a symbol with DW_AT_external and a | |
21589 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21590 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21591 | with some versions of binutils) where shared libraries could have | |
21592 | relocations against symbols in their debug information - the | |
21593 | minimal symbol would have the right address, but the debug info | |
21594 | would not. It's no longer necessary, because we will explicitly | |
21595 | apply relocations when we read in the debug information now. */ | |
21596 | ||
21597 | /* A DW_AT_location attribute with no contents indicates that a | |
21598 | variable has been optimized away. */ | |
21599 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21600 | { | |
f1e6e072 | 21601 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21602 | return; |
21603 | } | |
21604 | ||
21605 | /* Handle one degenerate form of location expression specially, to | |
21606 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21607 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21608 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21609 | |
21610 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21611 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21612 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21613 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21614 | && (DW_BLOCK (attr)->size | |
21615 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21616 | { |
891d2f0b | 21617 | unsigned int dummy; |
4c2df51b | 21618 | |
3019eac3 DE |
21619 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21620 | SYMBOL_VALUE_ADDRESS (sym) = | |
21621 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21622 | else | |
21623 | SYMBOL_VALUE_ADDRESS (sym) = | |
21624 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21625 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21626 | fixup_symbol_section (sym, objfile); |
21627 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21628 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21629 | return; |
21630 | } | |
21631 | ||
21632 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21633 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21634 | (i.e. when the value of a register or memory location is | |
21635 | referenced, or a thread-local block, etc.). Then again, it might | |
21636 | not be worthwhile. I'm assuming that it isn't unless performance | |
21637 | or memory numbers show me otherwise. */ | |
21638 | ||
f1e6e072 | 21639 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21640 | |
f1e6e072 | 21641 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21642 | cu->has_loclist = 1; |
4c2df51b DJ |
21643 | } |
21644 | ||
c906108c SS |
21645 | /* Given a pointer to a DWARF information entry, figure out if we need |
21646 | to make a symbol table entry for it, and if so, create a new entry | |
21647 | and return a pointer to it. | |
21648 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21649 | used the passed type. |
21650 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21651 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21652 | |
21653 | static struct symbol * | |
5e2db402 TT |
21654 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21655 | struct symbol *space) | |
c906108c | 21656 | { |
518817b3 SM |
21657 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21658 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21659 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21660 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21661 | struct symbol *sym = NULL; |
15d034d0 | 21662 | const char *name; |
c906108c SS |
21663 | struct attribute *attr = NULL; |
21664 | struct attribute *attr2 = NULL; | |
e142c38c | 21665 | CORE_ADDR baseaddr; |
e37fd15a SW |
21666 | struct pending **list_to_add = NULL; |
21667 | ||
edb3359d | 21668 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21669 | |
21670 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21671 | |
94af9270 | 21672 | name = dwarf2_name (die, cu); |
c906108c SS |
21673 | if (name) |
21674 | { | |
94af9270 | 21675 | const char *linkagename; |
34eaf542 | 21676 | int suppress_add = 0; |
94af9270 | 21677 | |
34eaf542 TT |
21678 | if (space) |
21679 | sym = space; | |
21680 | else | |
e623cf5d | 21681 | sym = allocate_symbol (objfile); |
c906108c | 21682 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21683 | |
21684 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21685 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21686 | linkagename = dwarf2_physname (name, die, cu); |
21687 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21688 | |
f55ee35c JK |
21689 | /* Fortran does not have mangling standard and the mangling does differ |
21690 | between gfortran, iFort etc. */ | |
21691 | if (cu->language == language_fortran | |
b250c185 | 21692 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21693 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21694 | dwarf2_full_name (name, die, cu), |
29df156d | 21695 | NULL); |
f55ee35c | 21696 | |
c906108c | 21697 | /* Default assumptions. |
c5aa993b | 21698 | Use the passed type or decode it from the die. */ |
176620f1 | 21699 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21700 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21701 | if (type != NULL) |
21702 | SYMBOL_TYPE (sym) = type; | |
21703 | else | |
e7c27a73 | 21704 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21705 | attr = dwarf2_attr (die, |
21706 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21707 | cu); | |
c906108c SS |
21708 | if (attr) |
21709 | { | |
21710 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21711 | } | |
cb1df416 | 21712 | |
edb3359d DJ |
21713 | attr = dwarf2_attr (die, |
21714 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21715 | cu); | |
cb1df416 DJ |
21716 | if (attr) |
21717 | { | |
ecfb656c | 21718 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21719 | struct file_entry *fe; |
9a619af0 | 21720 | |
ecfb656c PA |
21721 | if (cu->line_header != NULL) |
21722 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21723 | else |
21724 | fe = NULL; | |
21725 | ||
21726 | if (fe == NULL) | |
cb1df416 DJ |
21727 | complaint (&symfile_complaints, |
21728 | _("file index out of range")); | |
8c43009f PA |
21729 | else |
21730 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21731 | } |
21732 | ||
c906108c SS |
21733 | switch (die->tag) |
21734 | { | |
21735 | case DW_TAG_label: | |
e142c38c | 21736 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21737 | if (attr) |
3e29f34a MR |
21738 | { |
21739 | CORE_ADDR addr; | |
21740 | ||
21741 | addr = attr_value_as_address (attr); | |
21742 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21743 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21744 | } | |
0f5238ed TT |
21745 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21746 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21747 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 21748 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21749 | break; |
21750 | case DW_TAG_subprogram: | |
21751 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21752 | finish_block. */ | |
f1e6e072 | 21753 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21754 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21755 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21756 | || cu->language == language_ada) | |
c906108c | 21757 | { |
2cfa0c8d JB |
21758 | /* Subprograms marked external are stored as a global symbol. |
21759 | Ada subprograms, whether marked external or not, are always | |
21760 | stored as a global symbol, because we want to be able to | |
21761 | access them globally. For instance, we want to be able | |
21762 | to break on a nested subprogram without having to | |
21763 | specify the context. */ | |
e37fd15a | 21764 | list_to_add = &global_symbols; |
c906108c SS |
21765 | } |
21766 | else | |
21767 | { | |
e37fd15a | 21768 | list_to_add = cu->list_in_scope; |
c906108c SS |
21769 | } |
21770 | break; | |
edb3359d DJ |
21771 | case DW_TAG_inlined_subroutine: |
21772 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21773 | finish_block. */ | |
f1e6e072 | 21774 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21775 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21776 | list_to_add = cu->list_in_scope; |
edb3359d | 21777 | break; |
34eaf542 TT |
21778 | case DW_TAG_template_value_param: |
21779 | suppress_add = 1; | |
21780 | /* Fall through. */ | |
72929c62 | 21781 | case DW_TAG_constant: |
c906108c | 21782 | case DW_TAG_variable: |
254e6b9e | 21783 | case DW_TAG_member: |
0963b4bd MS |
21784 | /* Compilation with minimal debug info may result in |
21785 | variables with missing type entries. Change the | |
21786 | misleading `void' type to something sensible. */ | |
c906108c | 21787 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21788 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21789 | |
e142c38c | 21790 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21791 | /* In the case of DW_TAG_member, we should only be called for |
21792 | static const members. */ | |
21793 | if (die->tag == DW_TAG_member) | |
21794 | { | |
3863f96c DE |
21795 | /* dwarf2_add_field uses die_is_declaration, |
21796 | so we do the same. */ | |
254e6b9e DE |
21797 | gdb_assert (die_is_declaration (die, cu)); |
21798 | gdb_assert (attr); | |
21799 | } | |
c906108c SS |
21800 | if (attr) |
21801 | { | |
e7c27a73 | 21802 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21803 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21804 | if (!suppress_add) |
34eaf542 TT |
21805 | { |
21806 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 21807 | list_to_add = &global_symbols; |
34eaf542 | 21808 | else |
e37fd15a | 21809 | list_to_add = cu->list_in_scope; |
34eaf542 | 21810 | } |
c906108c SS |
21811 | break; |
21812 | } | |
e142c38c | 21813 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21814 | if (attr) |
21815 | { | |
e7c27a73 | 21816 | var_decode_location (attr, sym, cu); |
e142c38c | 21817 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21818 | |
21819 | /* Fortran explicitly imports any global symbols to the local | |
21820 | scope by DW_TAG_common_block. */ | |
21821 | if (cu->language == language_fortran && die->parent | |
21822 | && die->parent->tag == DW_TAG_common_block) | |
21823 | attr2 = NULL; | |
21824 | ||
caac4577 JG |
21825 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21826 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21827 | && !dwarf2_per_objfile->has_section_at_zero) | |
21828 | { | |
21829 | /* When a static variable is eliminated by the linker, | |
21830 | the corresponding debug information is not stripped | |
21831 | out, but the variable address is set to null; | |
21832 | do not add such variables into symbol table. */ | |
21833 | } | |
21834 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21835 | { |
f55ee35c JK |
21836 | /* Workaround gfortran PR debug/40040 - it uses |
21837 | DW_AT_location for variables in -fPIC libraries which may | |
21838 | get overriden by other libraries/executable and get | |
21839 | a different address. Resolve it by the minimal symbol | |
21840 | which may come from inferior's executable using copy | |
21841 | relocation. Make this workaround only for gfortran as for | |
21842 | other compilers GDB cannot guess the minimal symbol | |
21843 | Fortran mangling kind. */ | |
21844 | if (cu->language == language_fortran && die->parent | |
21845 | && die->parent->tag == DW_TAG_module | |
21846 | && cu->producer | |
28586665 | 21847 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21848 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21849 | |
1c809c68 TT |
21850 | /* A variable with DW_AT_external is never static, |
21851 | but it may be block-scoped. */ | |
21852 | list_to_add = (cu->list_in_scope == &file_symbols | |
21853 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 21854 | } |
c906108c | 21855 | else |
e37fd15a | 21856 | list_to_add = cu->list_in_scope; |
c906108c SS |
21857 | } |
21858 | else | |
21859 | { | |
21860 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21861 | If it is an external symbol and we have type information |
21862 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21863 | The address of the variable will then be determined from | |
21864 | the minimal symbol table whenever the variable is | |
21865 | referenced. */ | |
e142c38c | 21866 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21867 | |
21868 | /* Fortran explicitly imports any global symbols to the local | |
21869 | scope by DW_TAG_common_block. */ | |
21870 | if (cu->language == language_fortran && die->parent | |
21871 | && die->parent->tag == DW_TAG_common_block) | |
21872 | { | |
21873 | /* SYMBOL_CLASS doesn't matter here because | |
21874 | read_common_block is going to reset it. */ | |
21875 | if (!suppress_add) | |
21876 | list_to_add = cu->list_in_scope; | |
21877 | } | |
21878 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21879 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21880 | { |
0fe7935b DJ |
21881 | /* A variable with DW_AT_external is never static, but it |
21882 | may be block-scoped. */ | |
21883 | list_to_add = (cu->list_in_scope == &file_symbols | |
21884 | ? &global_symbols : cu->list_in_scope); | |
21885 | ||
f1e6e072 | 21886 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21887 | } |
442ddf59 JK |
21888 | else if (!die_is_declaration (die, cu)) |
21889 | { | |
21890 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21891 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21892 | if (!suppress_add) |
21893 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21894 | } |
c906108c SS |
21895 | } |
21896 | break; | |
21897 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
21898 | /* If we are inside a function, mark this as an argument. If |
21899 | not, we might be looking at an argument to an inlined function | |
21900 | when we do not have enough information to show inlined frames; | |
21901 | pretend it's a local variable in that case so that the user can | |
21902 | still see it. */ | |
21903 | if (context_stack_depth > 0 | |
21904 | && context_stack[context_stack_depth - 1].name != NULL) | |
21905 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 21906 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21907 | if (attr) |
21908 | { | |
e7c27a73 | 21909 | var_decode_location (attr, sym, cu); |
c906108c | 21910 | } |
e142c38c | 21911 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21912 | if (attr) |
21913 | { | |
e7c27a73 | 21914 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21915 | } |
f346a30d | 21916 | |
e37fd15a | 21917 | list_to_add = cu->list_in_scope; |
c906108c SS |
21918 | break; |
21919 | case DW_TAG_unspecified_parameters: | |
21920 | /* From varargs functions; gdb doesn't seem to have any | |
21921 | interest in this information, so just ignore it for now. | |
21922 | (FIXME?) */ | |
21923 | break; | |
34eaf542 TT |
21924 | case DW_TAG_template_type_param: |
21925 | suppress_add = 1; | |
21926 | /* Fall through. */ | |
c906108c | 21927 | case DW_TAG_class_type: |
680b30c7 | 21928 | case DW_TAG_interface_type: |
c906108c SS |
21929 | case DW_TAG_structure_type: |
21930 | case DW_TAG_union_type: | |
72019c9c | 21931 | case DW_TAG_set_type: |
c906108c | 21932 | case DW_TAG_enumeration_type: |
f1e6e072 | 21933 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21934 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21935 | |
63d06c5c | 21936 | { |
9c37b5ae | 21937 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21938 | really ever be static objects: otherwise, if you try |
21939 | to, say, break of a class's method and you're in a file | |
21940 | which doesn't mention that class, it won't work unless | |
21941 | the check for all static symbols in lookup_symbol_aux | |
21942 | saves you. See the OtherFileClass tests in | |
21943 | gdb.c++/namespace.exp. */ | |
21944 | ||
e37fd15a | 21945 | if (!suppress_add) |
34eaf542 | 21946 | { |
34eaf542 | 21947 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21948 | && cu->language == language_cplus |
34eaf542 | 21949 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21950 | |
64382290 | 21951 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21952 | ... }" also defines a typedef for "foo". */ |
64382290 | 21953 | if (cu->language == language_cplus |
45280282 | 21954 | || cu->language == language_ada |
c44af4eb TT |
21955 | || cu->language == language_d |
21956 | || cu->language == language_rust) | |
64382290 TT |
21957 | { |
21958 | /* The symbol's name is already allocated along | |
21959 | with this objfile, so we don't need to | |
21960 | duplicate it for the type. */ | |
21961 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21962 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21963 | } | |
63d06c5c DC |
21964 | } |
21965 | } | |
c906108c SS |
21966 | break; |
21967 | case DW_TAG_typedef: | |
f1e6e072 | 21968 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21969 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21970 | list_to_add = cu->list_in_scope; |
63d06c5c | 21971 | break; |
c906108c | 21972 | case DW_TAG_base_type: |
a02abb62 | 21973 | case DW_TAG_subrange_type: |
f1e6e072 | 21974 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21975 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21976 | list_to_add = cu->list_in_scope; |
c906108c SS |
21977 | break; |
21978 | case DW_TAG_enumerator: | |
e142c38c | 21979 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21980 | if (attr) |
21981 | { | |
e7c27a73 | 21982 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21983 | } |
63d06c5c DC |
21984 | { |
21985 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21986 | DW_TAG_class_type, etc. block. */ | |
21987 | ||
e142c38c | 21988 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21989 | && cu->language == language_cplus |
e142c38c | 21990 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21991 | } |
c906108c | 21992 | break; |
74921315 | 21993 | case DW_TAG_imported_declaration: |
5c4e30ca | 21994 | case DW_TAG_namespace: |
f1e6e072 | 21995 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 21996 | list_to_add = &global_symbols; |
5c4e30ca | 21997 | break; |
530e8392 KB |
21998 | case DW_TAG_module: |
21999 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22000 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
22001 | list_to_add = &global_symbols; | |
22002 | break; | |
4357ac6c | 22003 | case DW_TAG_common_block: |
f1e6e072 | 22004 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
22005 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
22006 | add_symbol_to_list (sym, cu->list_in_scope); | |
22007 | break; | |
c906108c SS |
22008 | default: |
22009 | /* Not a tag we recognize. Hopefully we aren't processing | |
22010 | trash data, but since we must specifically ignore things | |
22011 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22012 | this point. */ |
e2e0b3e5 | 22013 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 22014 | dwarf_tag_name (die->tag)); |
c906108c SS |
22015 | break; |
22016 | } | |
df8a16a1 | 22017 | |
e37fd15a SW |
22018 | if (suppress_add) |
22019 | { | |
22020 | sym->hash_next = objfile->template_symbols; | |
22021 | objfile->template_symbols = sym; | |
22022 | list_to_add = NULL; | |
22023 | } | |
22024 | ||
22025 | if (list_to_add != NULL) | |
22026 | add_symbol_to_list (sym, list_to_add); | |
22027 | ||
df8a16a1 DJ |
22028 | /* For the benefit of old versions of GCC, check for anonymous |
22029 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22030 | if (!cu->processing_has_namespace_info |
94af9270 | 22031 | && cu->language == language_cplus) |
a10964d1 | 22032 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
22033 | } |
22034 | return (sym); | |
22035 | } | |
22036 | ||
98bfdba5 PA |
22037 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22038 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22039 | standard (v4) is not entirely clear about the meaning of using | |
22040 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22041 | wider than the data. The conclusion of a discussion on the DWARF | |
22042 | list was that this is unspecified. We choose to always zero-extend | |
22043 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22044 | |
98bfdba5 | 22045 | static gdb_byte * |
ff39bb5e | 22046 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22047 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22048 | { |
518817b3 | 22049 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
22050 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22051 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
22052 | LONGEST l = DW_UNSND (attr); |
22053 | ||
22054 | if (bits < sizeof (*value) * 8) | |
22055 | { | |
22056 | l &= ((LONGEST) 1 << bits) - 1; | |
22057 | *value = l; | |
22058 | } | |
22059 | else if (bits == sizeof (*value) * 8) | |
22060 | *value = l; | |
22061 | else | |
22062 | { | |
224c3ddb | 22063 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22064 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22065 | return bytes; | |
22066 | } | |
22067 | ||
22068 | return NULL; | |
22069 | } | |
22070 | ||
22071 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22072 | the value does not fit in *VALUE, set *BYTES - either already | |
22073 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22074 | or, set *BATON, if we translated the constant to a location | |
22075 | expression. */ | |
22076 | ||
22077 | static void | |
ff39bb5e | 22078 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22079 | const char *name, struct obstack *obstack, |
22080 | struct dwarf2_cu *cu, | |
d521ce57 | 22081 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22082 | struct dwarf2_locexpr_baton **baton) |
22083 | { | |
518817b3 | 22084 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 22085 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22086 | struct dwarf_block *blk; |
98bfdba5 PA |
22087 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22088 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22089 | ||
22090 | *value = 0; | |
22091 | *bytes = NULL; | |
22092 | *baton = NULL; | |
c906108c SS |
22093 | |
22094 | switch (attr->form) | |
22095 | { | |
22096 | case DW_FORM_addr: | |
3019eac3 | 22097 | case DW_FORM_GNU_addr_index: |
ac56253d | 22098 | { |
ac56253d TT |
22099 | gdb_byte *data; |
22100 | ||
98bfdba5 PA |
22101 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22102 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22103 | cu_header->addr_size, |
98bfdba5 | 22104 | TYPE_LENGTH (type)); |
ac56253d TT |
22105 | /* Symbols of this form are reasonably rare, so we just |
22106 | piggyback on the existing location code rather than writing | |
22107 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22108 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
22109 | (*baton)->per_cu = cu->per_cu; |
22110 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22111 | |
98bfdba5 | 22112 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22113 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22114 | (*baton)->data = data; |
ac56253d TT |
22115 | |
22116 | data[0] = DW_OP_addr; | |
22117 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
22118 | byte_order, DW_ADDR (attr)); | |
22119 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 22120 | } |
c906108c | 22121 | break; |
4ac36638 | 22122 | case DW_FORM_string: |
93b5768b | 22123 | case DW_FORM_strp: |
3019eac3 | 22124 | case DW_FORM_GNU_str_index: |
36586728 | 22125 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
22126 | /* DW_STRING is already allocated on the objfile obstack, point |
22127 | directly to it. */ | |
d521ce57 | 22128 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 22129 | break; |
c906108c SS |
22130 | case DW_FORM_block1: |
22131 | case DW_FORM_block2: | |
22132 | case DW_FORM_block4: | |
22133 | case DW_FORM_block: | |
2dc7f7b3 | 22134 | case DW_FORM_exprloc: |
0224619f | 22135 | case DW_FORM_data16: |
c906108c | 22136 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
22137 | if (TYPE_LENGTH (type) != blk->size) |
22138 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22139 | TYPE_LENGTH (type)); | |
22140 | *bytes = blk->data; | |
c906108c | 22141 | break; |
2df3850c JM |
22142 | |
22143 | /* The DW_AT_const_value attributes are supposed to carry the | |
22144 | symbol's value "represented as it would be on the target | |
22145 | architecture." By the time we get here, it's already been | |
22146 | converted to host endianness, so we just need to sign- or | |
22147 | zero-extend it as appropriate. */ | |
22148 | case DW_FORM_data1: | |
3aef2284 | 22149 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22150 | break; |
c906108c | 22151 | case DW_FORM_data2: |
3aef2284 | 22152 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22153 | break; |
c906108c | 22154 | case DW_FORM_data4: |
3aef2284 | 22155 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22156 | break; |
c906108c | 22157 | case DW_FORM_data8: |
3aef2284 | 22158 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22159 | break; |
22160 | ||
c906108c | 22161 | case DW_FORM_sdata: |
663c44ac | 22162 | case DW_FORM_implicit_const: |
98bfdba5 | 22163 | *value = DW_SND (attr); |
2df3850c JM |
22164 | break; |
22165 | ||
c906108c | 22166 | case DW_FORM_udata: |
98bfdba5 | 22167 | *value = DW_UNSND (attr); |
c906108c | 22168 | break; |
2df3850c | 22169 | |
c906108c | 22170 | default: |
4d3c2250 | 22171 | complaint (&symfile_complaints, |
e2e0b3e5 | 22172 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22173 | dwarf_form_name (attr->form)); |
98bfdba5 | 22174 | *value = 0; |
c906108c SS |
22175 | break; |
22176 | } | |
22177 | } | |
22178 | ||
2df3850c | 22179 | |
98bfdba5 PA |
22180 | /* Copy constant value from an attribute to a symbol. */ |
22181 | ||
2df3850c | 22182 | static void |
ff39bb5e | 22183 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22184 | struct dwarf2_cu *cu) |
2df3850c | 22185 | { |
518817b3 | 22186 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 22187 | LONGEST value; |
d521ce57 | 22188 | const gdb_byte *bytes; |
98bfdba5 | 22189 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22190 | |
98bfdba5 PA |
22191 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
22192 | SYMBOL_PRINT_NAME (sym), | |
22193 | &objfile->objfile_obstack, cu, | |
22194 | &value, &bytes, &baton); | |
2df3850c | 22195 | |
98bfdba5 PA |
22196 | if (baton != NULL) |
22197 | { | |
98bfdba5 | 22198 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22199 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22200 | } |
22201 | else if (bytes != NULL) | |
22202 | { | |
22203 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22204 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22205 | } |
22206 | else | |
22207 | { | |
22208 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22209 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22210 | } |
2df3850c JM |
22211 | } |
22212 | ||
c906108c SS |
22213 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22214 | ||
22215 | static struct type * | |
e7c27a73 | 22216 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22217 | { |
c906108c | 22218 | struct attribute *type_attr; |
c906108c | 22219 | |
e142c38c | 22220 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22221 | if (!type_attr) |
22222 | { | |
518817b3 | 22223 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22224 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22225 | return objfile_type (objfile)->builtin_void; |
c906108c | 22226 | } |
348e048f | 22227 | |
673bfd45 | 22228 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22229 | } |
22230 | ||
b4ba55a1 JB |
22231 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22232 | that allows to find parallel types through that information instead | |
22233 | of having to do expensive parallel lookups by type name. */ | |
22234 | ||
22235 | static int | |
22236 | need_gnat_info (struct dwarf2_cu *cu) | |
22237 | { | |
de4cb04a JB |
22238 | /* Assume that the Ada compiler was GNAT, which always produces |
22239 | the auxiliary information. */ | |
22240 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22241 | } |
22242 | ||
b4ba55a1 JB |
22243 | /* Return the auxiliary type of the die in question using its |
22244 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22245 | attribute is not present. */ | |
22246 | ||
22247 | static struct type * | |
22248 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22249 | { | |
b4ba55a1 | 22250 | struct attribute *type_attr; |
b4ba55a1 JB |
22251 | |
22252 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22253 | if (!type_attr) | |
22254 | return NULL; | |
22255 | ||
673bfd45 | 22256 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22257 | } |
22258 | ||
22259 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22260 | descriptive type accordingly. */ | |
22261 | ||
22262 | static void | |
22263 | set_descriptive_type (struct type *type, struct die_info *die, | |
22264 | struct dwarf2_cu *cu) | |
22265 | { | |
22266 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22267 | ||
22268 | if (descriptive_type) | |
22269 | { | |
22270 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22271 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22272 | } | |
22273 | } | |
22274 | ||
c906108c SS |
22275 | /* Return the containing type of the die in question using its |
22276 | DW_AT_containing_type attribute. */ | |
22277 | ||
22278 | static struct type * | |
e7c27a73 | 22279 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22280 | { |
c906108c | 22281 | struct attribute *type_attr; |
518817b3 | 22282 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22283 | |
e142c38c | 22284 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22285 | if (!type_attr) |
22286 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22287 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22288 | |
673bfd45 | 22289 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22290 | } |
22291 | ||
ac9ec31b DE |
22292 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22293 | ||
22294 | static struct type * | |
22295 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22296 | { | |
518817b3 SM |
22297 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22298 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22299 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
22300 | char *message, *saved; | |
22301 | ||
9d8780f0 | 22302 | message = xstrprintf (_("<unknown type in %s, CU %s, DIE %s>"), |
4262abfb | 22303 | objfile_name (objfile), |
9d8780f0 SM |
22304 | sect_offset_str (cu->header.sect_off), |
22305 | sect_offset_str (die->sect_off)); | |
224c3ddb SM |
22306 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
22307 | message, strlen (message)); | |
ac9ec31b DE |
22308 | xfree (message); |
22309 | ||
19f392bc | 22310 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22311 | } |
22312 | ||
673bfd45 | 22313 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22314 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22315 | DW_AT_containing_type. | |
673bfd45 DE |
22316 | If there is no type substitute an error marker. */ |
22317 | ||
c906108c | 22318 | static struct type * |
ff39bb5e | 22319 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22320 | struct dwarf2_cu *cu) |
c906108c | 22321 | { |
518817b3 SM |
22322 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22323 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22324 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22325 | struct type *this_type; |
22326 | ||
ac9ec31b DE |
22327 | gdb_assert (attr->name == DW_AT_type |
22328 | || attr->name == DW_AT_GNAT_descriptive_type | |
22329 | || attr->name == DW_AT_containing_type); | |
22330 | ||
673bfd45 DE |
22331 | /* First see if we have it cached. */ |
22332 | ||
36586728 TT |
22333 | if (attr->form == DW_FORM_GNU_ref_alt) |
22334 | { | |
22335 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22336 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22337 | |
ed2dc618 SM |
22338 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22339 | dwarf2_per_objfile); | |
9c541725 | 22340 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22341 | } |
7771576e | 22342 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22343 | { |
9c541725 | 22344 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22345 | |
9c541725 | 22346 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22347 | } |
55f1336d | 22348 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22349 | { |
ac9ec31b | 22350 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22351 | |
ac9ec31b | 22352 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22353 | } |
22354 | else | |
22355 | { | |
ac9ec31b DE |
22356 | complaint (&symfile_complaints, |
22357 | _("Dwarf Error: Bad type attribute %s in DIE" | |
9d8780f0 SM |
22358 | " at %s [in module %s]"), |
22359 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22360 | objfile_name (objfile)); |
ac9ec31b | 22361 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22362 | } |
22363 | ||
22364 | /* If not cached we need to read it in. */ | |
22365 | ||
22366 | if (this_type == NULL) | |
22367 | { | |
ac9ec31b | 22368 | struct die_info *type_die = NULL; |
673bfd45 DE |
22369 | struct dwarf2_cu *type_cu = cu; |
22370 | ||
7771576e | 22371 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22372 | type_die = follow_die_ref (die, attr, &type_cu); |
22373 | if (type_die == NULL) | |
22374 | return build_error_marker_type (cu, die); | |
22375 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22376 | from an inter-CU reference and the type's CU got expanded before |
22377 | ours. */ | |
ac9ec31b | 22378 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22379 | } |
22380 | ||
22381 | /* If we still don't have a type use an error marker. */ | |
22382 | ||
22383 | if (this_type == NULL) | |
ac9ec31b | 22384 | return build_error_marker_type (cu, die); |
673bfd45 | 22385 | |
f792889a | 22386 | return this_type; |
c906108c SS |
22387 | } |
22388 | ||
673bfd45 DE |
22389 | /* Return the type in DIE, CU. |
22390 | Returns NULL for invalid types. | |
22391 | ||
02142a6c | 22392 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22393 | and only reads the die in if necessary. |
22394 | ||
22395 | NOTE: This can be called when reading in partial or full symbols. */ | |
22396 | ||
f792889a | 22397 | static struct type * |
e7c27a73 | 22398 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22399 | { |
f792889a DJ |
22400 | struct type *this_type; |
22401 | ||
22402 | this_type = get_die_type (die, cu); | |
22403 | if (this_type) | |
22404 | return this_type; | |
22405 | ||
673bfd45 DE |
22406 | return read_type_die_1 (die, cu); |
22407 | } | |
22408 | ||
22409 | /* Read the type in DIE, CU. | |
22410 | Returns NULL for invalid types. */ | |
22411 | ||
22412 | static struct type * | |
22413 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22414 | { | |
22415 | struct type *this_type = NULL; | |
22416 | ||
c906108c SS |
22417 | switch (die->tag) |
22418 | { | |
22419 | case DW_TAG_class_type: | |
680b30c7 | 22420 | case DW_TAG_interface_type: |
c906108c SS |
22421 | case DW_TAG_structure_type: |
22422 | case DW_TAG_union_type: | |
f792889a | 22423 | this_type = read_structure_type (die, cu); |
c906108c SS |
22424 | break; |
22425 | case DW_TAG_enumeration_type: | |
f792889a | 22426 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22427 | break; |
22428 | case DW_TAG_subprogram: | |
22429 | case DW_TAG_subroutine_type: | |
edb3359d | 22430 | case DW_TAG_inlined_subroutine: |
f792889a | 22431 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22432 | break; |
22433 | case DW_TAG_array_type: | |
f792889a | 22434 | this_type = read_array_type (die, cu); |
c906108c | 22435 | break; |
72019c9c | 22436 | case DW_TAG_set_type: |
f792889a | 22437 | this_type = read_set_type (die, cu); |
72019c9c | 22438 | break; |
c906108c | 22439 | case DW_TAG_pointer_type: |
f792889a | 22440 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22441 | break; |
22442 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22443 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22444 | break; |
22445 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22446 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22447 | break; | |
22448 | case DW_TAG_rvalue_reference_type: | |
22449 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22450 | break; |
22451 | case DW_TAG_const_type: | |
f792889a | 22452 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22453 | break; |
22454 | case DW_TAG_volatile_type: | |
f792889a | 22455 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22456 | break; |
06d66ee9 TT |
22457 | case DW_TAG_restrict_type: |
22458 | this_type = read_tag_restrict_type (die, cu); | |
22459 | break; | |
c906108c | 22460 | case DW_TAG_string_type: |
f792889a | 22461 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22462 | break; |
22463 | case DW_TAG_typedef: | |
f792889a | 22464 | this_type = read_typedef (die, cu); |
c906108c | 22465 | break; |
a02abb62 | 22466 | case DW_TAG_subrange_type: |
f792889a | 22467 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22468 | break; |
c906108c | 22469 | case DW_TAG_base_type: |
f792889a | 22470 | this_type = read_base_type (die, cu); |
c906108c | 22471 | break; |
81a17f79 | 22472 | case DW_TAG_unspecified_type: |
f792889a | 22473 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22474 | break; |
0114d602 DJ |
22475 | case DW_TAG_namespace: |
22476 | this_type = read_namespace_type (die, cu); | |
22477 | break; | |
f55ee35c JK |
22478 | case DW_TAG_module: |
22479 | this_type = read_module_type (die, cu); | |
22480 | break; | |
a2c2acaf MW |
22481 | case DW_TAG_atomic_type: |
22482 | this_type = read_tag_atomic_type (die, cu); | |
22483 | break; | |
c906108c | 22484 | default: |
3e43a32a MS |
22485 | complaint (&symfile_complaints, |
22486 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 22487 | dwarf_tag_name (die->tag)); |
c906108c SS |
22488 | break; |
22489 | } | |
63d06c5c | 22490 | |
f792889a | 22491 | return this_type; |
63d06c5c DC |
22492 | } |
22493 | ||
abc72ce4 DE |
22494 | /* See if we can figure out if the class lives in a namespace. We do |
22495 | this by looking for a member function; its demangled name will | |
22496 | contain namespace info, if there is any. | |
22497 | Return the computed name or NULL. | |
22498 | Space for the result is allocated on the objfile's obstack. | |
22499 | This is the full-die version of guess_partial_die_structure_name. | |
22500 | In this case we know DIE has no useful parent. */ | |
22501 | ||
22502 | static char * | |
22503 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22504 | { | |
22505 | struct die_info *spec_die; | |
22506 | struct dwarf2_cu *spec_cu; | |
22507 | struct die_info *child; | |
518817b3 | 22508 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22509 | |
22510 | spec_cu = cu; | |
22511 | spec_die = die_specification (die, &spec_cu); | |
22512 | if (spec_die != NULL) | |
22513 | { | |
22514 | die = spec_die; | |
22515 | cu = spec_cu; | |
22516 | } | |
22517 | ||
22518 | for (child = die->child; | |
22519 | child != NULL; | |
22520 | child = child->sibling) | |
22521 | { | |
22522 | if (child->tag == DW_TAG_subprogram) | |
22523 | { | |
73b9be8b | 22524 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22525 | |
7d45c7c3 | 22526 | if (linkage_name != NULL) |
abc72ce4 DE |
22527 | { |
22528 | char *actual_name | |
22529 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22530 | linkage_name); |
abc72ce4 DE |
22531 | char *name = NULL; |
22532 | ||
22533 | if (actual_name != NULL) | |
22534 | { | |
15d034d0 | 22535 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22536 | |
22537 | if (die_name != NULL | |
22538 | && strcmp (die_name, actual_name) != 0) | |
22539 | { | |
22540 | /* Strip off the class name from the full name. | |
22541 | We want the prefix. */ | |
22542 | int die_name_len = strlen (die_name); | |
22543 | int actual_name_len = strlen (actual_name); | |
22544 | ||
22545 | /* Test for '::' as a sanity check. */ | |
22546 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22547 | && actual_name[actual_name_len |
22548 | - die_name_len - 1] == ':') | |
224c3ddb | 22549 | name = (char *) obstack_copy0 ( |
e3b94546 | 22550 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22551 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22552 | } |
22553 | } | |
22554 | xfree (actual_name); | |
22555 | return name; | |
22556 | } | |
22557 | } | |
22558 | } | |
22559 | ||
22560 | return NULL; | |
22561 | } | |
22562 | ||
96408a79 SA |
22563 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22564 | prefix part in such case. See | |
22565 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22566 | ||
a121b7c1 | 22567 | static const char * |
96408a79 SA |
22568 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22569 | { | |
22570 | struct attribute *attr; | |
e6a959d6 | 22571 | const char *base; |
96408a79 SA |
22572 | |
22573 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22574 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22575 | return NULL; | |
22576 | ||
7d45c7c3 | 22577 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22578 | return NULL; |
22579 | ||
73b9be8b | 22580 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22581 | if (attr == NULL || DW_STRING (attr) == NULL) |
22582 | return NULL; | |
22583 | ||
22584 | /* dwarf2_name had to be already called. */ | |
22585 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22586 | ||
22587 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22588 | base = strrchr (DW_STRING (attr), ':'); | |
22589 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22590 | return ""; | |
22591 | ||
518817b3 | 22592 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22593 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22594 | DW_STRING (attr), |
22595 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22596 | } |
22597 | ||
fdde2d81 | 22598 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22599 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22600 | |
0114d602 DJ |
22601 | For example, if we're within the method foo() in the following |
22602 | code: | |
22603 | ||
22604 | namespace N { | |
22605 | class C { | |
22606 | void foo () { | |
22607 | } | |
22608 | }; | |
22609 | } | |
22610 | ||
22611 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22612 | |
0d5cff50 | 22613 | static const char * |
e142c38c | 22614 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22615 | { |
518817b3 SM |
22616 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22617 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22618 | struct die_info *parent, *spec_die; |
22619 | struct dwarf2_cu *spec_cu; | |
22620 | struct type *parent_type; | |
a121b7c1 | 22621 | const char *retval; |
63d06c5c | 22622 | |
9c37b5ae | 22623 | if (cu->language != language_cplus |
c44af4eb TT |
22624 | && cu->language != language_fortran && cu->language != language_d |
22625 | && cu->language != language_rust) | |
0114d602 DJ |
22626 | return ""; |
22627 | ||
96408a79 SA |
22628 | retval = anonymous_struct_prefix (die, cu); |
22629 | if (retval) | |
22630 | return retval; | |
22631 | ||
0114d602 DJ |
22632 | /* We have to be careful in the presence of DW_AT_specification. |
22633 | For example, with GCC 3.4, given the code | |
22634 | ||
22635 | namespace N { | |
22636 | void foo() { | |
22637 | // Definition of N::foo. | |
22638 | } | |
22639 | } | |
22640 | ||
22641 | then we'll have a tree of DIEs like this: | |
22642 | ||
22643 | 1: DW_TAG_compile_unit | |
22644 | 2: DW_TAG_namespace // N | |
22645 | 3: DW_TAG_subprogram // declaration of N::foo | |
22646 | 4: DW_TAG_subprogram // definition of N::foo | |
22647 | DW_AT_specification // refers to die #3 | |
22648 | ||
22649 | Thus, when processing die #4, we have to pretend that we're in | |
22650 | the context of its DW_AT_specification, namely the contex of die | |
22651 | #3. */ | |
22652 | spec_cu = cu; | |
22653 | spec_die = die_specification (die, &spec_cu); | |
22654 | if (spec_die == NULL) | |
22655 | parent = die->parent; | |
22656 | else | |
63d06c5c | 22657 | { |
0114d602 DJ |
22658 | parent = spec_die->parent; |
22659 | cu = spec_cu; | |
63d06c5c | 22660 | } |
0114d602 DJ |
22661 | |
22662 | if (parent == NULL) | |
22663 | return ""; | |
98bfdba5 PA |
22664 | else if (parent->building_fullname) |
22665 | { | |
22666 | const char *name; | |
22667 | const char *parent_name; | |
22668 | ||
22669 | /* It has been seen on RealView 2.2 built binaries, | |
22670 | DW_TAG_template_type_param types actually _defined_ as | |
22671 | children of the parent class: | |
22672 | ||
22673 | enum E {}; | |
22674 | template class <class Enum> Class{}; | |
22675 | Class<enum E> class_e; | |
22676 | ||
22677 | 1: DW_TAG_class_type (Class) | |
22678 | 2: DW_TAG_enumeration_type (E) | |
22679 | 3: DW_TAG_enumerator (enum1:0) | |
22680 | 3: DW_TAG_enumerator (enum2:1) | |
22681 | ... | |
22682 | 2: DW_TAG_template_type_param | |
22683 | DW_AT_type DW_FORM_ref_udata (E) | |
22684 | ||
22685 | Besides being broken debug info, it can put GDB into an | |
22686 | infinite loop. Consider: | |
22687 | ||
22688 | When we're building the full name for Class<E>, we'll start | |
22689 | at Class, and go look over its template type parameters, | |
22690 | finding E. We'll then try to build the full name of E, and | |
22691 | reach here. We're now trying to build the full name of E, | |
22692 | and look over the parent DIE for containing scope. In the | |
22693 | broken case, if we followed the parent DIE of E, we'd again | |
22694 | find Class, and once again go look at its template type | |
22695 | arguments, etc., etc. Simply don't consider such parent die | |
22696 | as source-level parent of this die (it can't be, the language | |
22697 | doesn't allow it), and break the loop here. */ | |
22698 | name = dwarf2_name (die, cu); | |
22699 | parent_name = dwarf2_name (parent, cu); | |
22700 | complaint (&symfile_complaints, | |
22701 | _("template param type '%s' defined within parent '%s'"), | |
22702 | name ? name : "<unknown>", | |
22703 | parent_name ? parent_name : "<unknown>"); | |
22704 | return ""; | |
22705 | } | |
63d06c5c | 22706 | else |
0114d602 DJ |
22707 | switch (parent->tag) |
22708 | { | |
63d06c5c | 22709 | case DW_TAG_namespace: |
0114d602 | 22710 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22711 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22712 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22713 | Work around this problem here. */ | |
22714 | if (cu->language == language_cplus | |
22715 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
22716 | return ""; | |
0114d602 DJ |
22717 | /* We give a name to even anonymous namespaces. */ |
22718 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 22719 | case DW_TAG_class_type: |
680b30c7 | 22720 | case DW_TAG_interface_type: |
63d06c5c | 22721 | case DW_TAG_structure_type: |
0114d602 | 22722 | case DW_TAG_union_type: |
f55ee35c | 22723 | case DW_TAG_module: |
0114d602 DJ |
22724 | parent_type = read_type_die (parent, cu); |
22725 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22726 | return TYPE_TAG_NAME (parent_type); | |
22727 | else | |
22728 | /* An anonymous structure is only allowed non-static data | |
22729 | members; no typedefs, no member functions, et cetera. | |
22730 | So it does not need a prefix. */ | |
22731 | return ""; | |
abc72ce4 | 22732 | case DW_TAG_compile_unit: |
95554aad | 22733 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22734 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22735 | if (cu->language == language_cplus | |
8b70b953 | 22736 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22737 | && die->child != NULL |
22738 | && (die->tag == DW_TAG_class_type | |
22739 | || die->tag == DW_TAG_structure_type | |
22740 | || die->tag == DW_TAG_union_type)) | |
22741 | { | |
22742 | char *name = guess_full_die_structure_name (die, cu); | |
22743 | if (name != NULL) | |
22744 | return name; | |
22745 | } | |
22746 | return ""; | |
3d567982 TT |
22747 | case DW_TAG_enumeration_type: |
22748 | parent_type = read_type_die (parent, cu); | |
22749 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22750 | { | |
22751 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22752 | return TYPE_TAG_NAME (parent_type); | |
22753 | return ""; | |
22754 | } | |
22755 | /* Fall through. */ | |
63d06c5c | 22756 | default: |
8176b9b8 | 22757 | return determine_prefix (parent, cu); |
63d06c5c | 22758 | } |
63d06c5c DC |
22759 | } |
22760 | ||
3e43a32a MS |
22761 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22762 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22763 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22764 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22765 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22766 | |
f55ee35c | 22767 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22768 | |
22769 | static char * | |
f55ee35c JK |
22770 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22771 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22772 | { |
f55ee35c | 22773 | const char *lead = ""; |
5c315b68 | 22774 | const char *sep; |
63d06c5c | 22775 | |
3e43a32a MS |
22776 | if (suffix == NULL || suffix[0] == '\0' |
22777 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22778 | sep = ""; |
45280282 IB |
22779 | else if (cu->language == language_d) |
22780 | { | |
22781 | /* For D, the 'main' function could be defined in any module, but it | |
22782 | should never be prefixed. */ | |
22783 | if (strcmp (suffix, "D main") == 0) | |
22784 | { | |
22785 | prefix = ""; | |
22786 | sep = ""; | |
22787 | } | |
22788 | else | |
22789 | sep = "."; | |
22790 | } | |
f55ee35c JK |
22791 | else if (cu->language == language_fortran && physname) |
22792 | { | |
22793 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22794 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22795 | ||
22796 | lead = "__"; | |
22797 | sep = "_MOD_"; | |
22798 | } | |
987504bb JJ |
22799 | else |
22800 | sep = "::"; | |
63d06c5c | 22801 | |
6dd47d34 DE |
22802 | if (prefix == NULL) |
22803 | prefix = ""; | |
22804 | if (suffix == NULL) | |
22805 | suffix = ""; | |
22806 | ||
987504bb JJ |
22807 | if (obs == NULL) |
22808 | { | |
3e43a32a | 22809 | char *retval |
224c3ddb SM |
22810 | = ((char *) |
22811 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22812 | |
f55ee35c JK |
22813 | strcpy (retval, lead); |
22814 | strcat (retval, prefix); | |
6dd47d34 DE |
22815 | strcat (retval, sep); |
22816 | strcat (retval, suffix); | |
63d06c5c DC |
22817 | return retval; |
22818 | } | |
987504bb JJ |
22819 | else |
22820 | { | |
22821 | /* We have an obstack. */ | |
f55ee35c | 22822 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22823 | } |
63d06c5c DC |
22824 | } |
22825 | ||
c906108c SS |
22826 | /* Return sibling of die, NULL if no sibling. */ |
22827 | ||
f9aca02d | 22828 | static struct die_info * |
fba45db2 | 22829 | sibling_die (struct die_info *die) |
c906108c | 22830 | { |
639d11d3 | 22831 | return die->sibling; |
c906108c SS |
22832 | } |
22833 | ||
71c25dea TT |
22834 | /* Get name of a die, return NULL if not found. */ |
22835 | ||
15d034d0 TT |
22836 | static const char * |
22837 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22838 | struct obstack *obstack) |
22839 | { | |
22840 | if (name && cu->language == language_cplus) | |
22841 | { | |
2f408ecb | 22842 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22843 | |
2f408ecb | 22844 | if (!canon_name.empty ()) |
71c25dea | 22845 | { |
2f408ecb PA |
22846 | if (canon_name != name) |
22847 | name = (const char *) obstack_copy0 (obstack, | |
22848 | canon_name.c_str (), | |
22849 | canon_name.length ()); | |
71c25dea TT |
22850 | } |
22851 | } | |
22852 | ||
22853 | return name; | |
c906108c SS |
22854 | } |
22855 | ||
96553a0c DE |
22856 | /* Get name of a die, return NULL if not found. |
22857 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22858 | |
15d034d0 | 22859 | static const char * |
e142c38c | 22860 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22861 | { |
22862 | struct attribute *attr; | |
518817b3 | 22863 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22864 | |
e142c38c | 22865 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22866 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22867 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22868 | && die->tag != DW_TAG_class_type |
22869 | && die->tag != DW_TAG_interface_type | |
22870 | && die->tag != DW_TAG_structure_type | |
22871 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22872 | return NULL; |
22873 | ||
22874 | switch (die->tag) | |
22875 | { | |
22876 | case DW_TAG_compile_unit: | |
95554aad | 22877 | case DW_TAG_partial_unit: |
71c25dea TT |
22878 | /* Compilation units have a DW_AT_name that is a filename, not |
22879 | a source language identifier. */ | |
22880 | case DW_TAG_enumeration_type: | |
22881 | case DW_TAG_enumerator: | |
22882 | /* These tags always have simple identifiers already; no need | |
22883 | to canonicalize them. */ | |
22884 | return DW_STRING (attr); | |
907af001 | 22885 | |
96553a0c DE |
22886 | case DW_TAG_namespace: |
22887 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22888 | return DW_STRING (attr); | |
22889 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22890 | ||
907af001 UW |
22891 | case DW_TAG_class_type: |
22892 | case DW_TAG_interface_type: | |
22893 | case DW_TAG_structure_type: | |
22894 | case DW_TAG_union_type: | |
22895 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22896 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22897 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22898 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22899 | if (attr && DW_STRING (attr) |
61012eef GB |
22900 | && (startswith (DW_STRING (attr), "._") |
22901 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22902 | return NULL; |
53832f31 TT |
22903 | |
22904 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22905 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22906 | if (!attr || DW_STRING (attr) == NULL) | |
22907 | { | |
df5c6c50 | 22908 | char *demangled = NULL; |
53832f31 | 22909 | |
73b9be8b | 22910 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22911 | if (attr == NULL || DW_STRING (attr) == NULL) |
22912 | return NULL; | |
22913 | ||
df5c6c50 JK |
22914 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22915 | call for the same DIE. */ | |
22916 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22917 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22918 | |
22919 | if (demangled) | |
22920 | { | |
e6a959d6 | 22921 | const char *base; |
96408a79 | 22922 | |
53832f31 | 22923 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22924 | DW_STRING (attr) |
224c3ddb | 22925 | = ((const char *) |
e3b94546 | 22926 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22927 | demangled, strlen (demangled))); |
53832f31 TT |
22928 | DW_STRING_IS_CANONICAL (attr) = 1; |
22929 | xfree (demangled); | |
96408a79 SA |
22930 | |
22931 | /* Strip any leading namespaces/classes, keep only the base name. | |
22932 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22933 | base = strrchr (DW_STRING (attr), ':'); | |
22934 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22935 | return &base[1]; | |
22936 | else | |
22937 | return DW_STRING (attr); | |
53832f31 TT |
22938 | } |
22939 | } | |
907af001 UW |
22940 | break; |
22941 | ||
71c25dea | 22942 | default: |
907af001 UW |
22943 | break; |
22944 | } | |
22945 | ||
22946 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22947 | { | |
22948 | DW_STRING (attr) | |
22949 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22950 | &objfile->per_bfd->storage_obstack); |
907af001 | 22951 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22952 | } |
907af001 | 22953 | return DW_STRING (attr); |
9219021c DC |
22954 | } |
22955 | ||
22956 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22957 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22958 | containing the return value on output. */ | |
9219021c DC |
22959 | |
22960 | static struct die_info * | |
f2f0e013 | 22961 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22962 | { |
22963 | struct attribute *attr; | |
9219021c | 22964 | |
f2f0e013 | 22965 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22966 | if (attr == NULL) |
22967 | return NULL; | |
22968 | ||
f2f0e013 | 22969 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22970 | } |
22971 | ||
c906108c SS |
22972 | /* Convert a DIE tag into its string name. */ |
22973 | ||
f39c6ffd | 22974 | static const char * |
aa1ee363 | 22975 | dwarf_tag_name (unsigned tag) |
c906108c | 22976 | { |
f39c6ffd TT |
22977 | const char *name = get_DW_TAG_name (tag); |
22978 | ||
22979 | if (name == NULL) | |
22980 | return "DW_TAG_<unknown>"; | |
22981 | ||
22982 | return name; | |
c906108c SS |
22983 | } |
22984 | ||
22985 | /* Convert a DWARF attribute code into its string name. */ | |
22986 | ||
f39c6ffd | 22987 | static const char * |
aa1ee363 | 22988 | dwarf_attr_name (unsigned attr) |
c906108c | 22989 | { |
f39c6ffd TT |
22990 | const char *name; |
22991 | ||
c764a876 | 22992 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22993 | if (attr == DW_AT_MIPS_fde) |
22994 | return "DW_AT_MIPS_fde"; | |
22995 | #else | |
22996 | if (attr == DW_AT_HP_block_index) | |
22997 | return "DW_AT_HP_block_index"; | |
c764a876 | 22998 | #endif |
f39c6ffd TT |
22999 | |
23000 | name = get_DW_AT_name (attr); | |
23001 | ||
23002 | if (name == NULL) | |
23003 | return "DW_AT_<unknown>"; | |
23004 | ||
23005 | return name; | |
c906108c SS |
23006 | } |
23007 | ||
23008 | /* Convert a DWARF value form code into its string name. */ | |
23009 | ||
f39c6ffd | 23010 | static const char * |
aa1ee363 | 23011 | dwarf_form_name (unsigned form) |
c906108c | 23012 | { |
f39c6ffd TT |
23013 | const char *name = get_DW_FORM_name (form); |
23014 | ||
23015 | if (name == NULL) | |
23016 | return "DW_FORM_<unknown>"; | |
23017 | ||
23018 | return name; | |
c906108c SS |
23019 | } |
23020 | ||
a121b7c1 | 23021 | static const char * |
fba45db2 | 23022 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
23023 | { |
23024 | if (mybool) | |
23025 | return "TRUE"; | |
23026 | else | |
23027 | return "FALSE"; | |
23028 | } | |
23029 | ||
23030 | /* Convert a DWARF type code into its string name. */ | |
23031 | ||
f39c6ffd | 23032 | static const char * |
aa1ee363 | 23033 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 23034 | { |
f39c6ffd | 23035 | const char *name = get_DW_ATE_name (enc); |
c906108c | 23036 | |
f39c6ffd TT |
23037 | if (name == NULL) |
23038 | return "DW_ATE_<unknown>"; | |
c906108c | 23039 | |
f39c6ffd | 23040 | return name; |
c906108c | 23041 | } |
c906108c | 23042 | |
f9aca02d | 23043 | static void |
d97bc12b | 23044 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23045 | { |
23046 | unsigned int i; | |
23047 | ||
d97bc12b | 23048 | print_spaces (indent, f); |
9d8780f0 | 23049 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23050 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23051 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23052 | |
23053 | if (die->parent != NULL) | |
23054 | { | |
23055 | print_spaces (indent, f); | |
9d8780f0 SM |
23056 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23057 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23058 | } |
23059 | ||
23060 | print_spaces (indent, f); | |
23061 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23062 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23063 | |
d97bc12b DE |
23064 | print_spaces (indent, f); |
23065 | fprintf_unfiltered (f, " attributes:\n"); | |
23066 | ||
c906108c SS |
23067 | for (i = 0; i < die->num_attrs; ++i) |
23068 | { | |
d97bc12b DE |
23069 | print_spaces (indent, f); |
23070 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23071 | dwarf_attr_name (die->attrs[i].name), |
23072 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23073 | |
c906108c SS |
23074 | switch (die->attrs[i].form) |
23075 | { | |
c906108c | 23076 | case DW_FORM_addr: |
3019eac3 | 23077 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23078 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 23079 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
23080 | break; |
23081 | case DW_FORM_block2: | |
23082 | case DW_FORM_block4: | |
23083 | case DW_FORM_block: | |
23084 | case DW_FORM_block1: | |
56eb65bd SP |
23085 | fprintf_unfiltered (f, "block: size %s", |
23086 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 23087 | break; |
2dc7f7b3 | 23088 | case DW_FORM_exprloc: |
56eb65bd SP |
23089 | fprintf_unfiltered (f, "expression: size %s", |
23090 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 23091 | break; |
0224619f JK |
23092 | case DW_FORM_data16: |
23093 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23094 | break; | |
4568ecf9 DE |
23095 | case DW_FORM_ref_addr: |
23096 | fprintf_unfiltered (f, "ref address: "); | |
23097 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23098 | break; | |
36586728 TT |
23099 | case DW_FORM_GNU_ref_alt: |
23100 | fprintf_unfiltered (f, "alt ref address: "); | |
23101 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23102 | break; | |
10b3939b DJ |
23103 | case DW_FORM_ref1: |
23104 | case DW_FORM_ref2: | |
23105 | case DW_FORM_ref4: | |
4568ecf9 DE |
23106 | case DW_FORM_ref8: |
23107 | case DW_FORM_ref_udata: | |
d97bc12b | 23108 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 23109 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 23110 | break; |
c906108c SS |
23111 | case DW_FORM_data1: |
23112 | case DW_FORM_data2: | |
23113 | case DW_FORM_data4: | |
ce5d95e1 | 23114 | case DW_FORM_data8: |
c906108c SS |
23115 | case DW_FORM_udata: |
23116 | case DW_FORM_sdata: | |
43bbcdc2 PH |
23117 | fprintf_unfiltered (f, "constant: %s", |
23118 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 23119 | break; |
2dc7f7b3 TT |
23120 | case DW_FORM_sec_offset: |
23121 | fprintf_unfiltered (f, "section offset: %s", | |
23122 | pulongest (DW_UNSND (&die->attrs[i]))); | |
23123 | break; | |
55f1336d | 23124 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
23125 | fprintf_unfiltered (f, "signature: %s", |
23126 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 23127 | break; |
c906108c | 23128 | case DW_FORM_string: |
4bdf3d34 | 23129 | case DW_FORM_strp: |
43988095 | 23130 | case DW_FORM_line_strp: |
3019eac3 | 23131 | case DW_FORM_GNU_str_index: |
36586728 | 23132 | case DW_FORM_GNU_strp_alt: |
8285870a | 23133 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 23134 | DW_STRING (&die->attrs[i]) |
8285870a JK |
23135 | ? DW_STRING (&die->attrs[i]) : "", |
23136 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
23137 | break; |
23138 | case DW_FORM_flag: | |
23139 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 23140 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23141 | else |
d97bc12b | 23142 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23143 | break; |
2dc7f7b3 TT |
23144 | case DW_FORM_flag_present: |
23145 | fprintf_unfiltered (f, "flag: TRUE"); | |
23146 | break; | |
a8329558 | 23147 | case DW_FORM_indirect: |
0963b4bd MS |
23148 | /* The reader will have reduced the indirect form to |
23149 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
23150 | fprintf_unfiltered (f, |
23151 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 23152 | break; |
663c44ac JK |
23153 | case DW_FORM_implicit_const: |
23154 | fprintf_unfiltered (f, "constant: %s", | |
23155 | plongest (DW_SND (&die->attrs[i]))); | |
23156 | break; | |
c906108c | 23157 | default: |
d97bc12b | 23158 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23159 | die->attrs[i].form); |
d97bc12b | 23160 | break; |
c906108c | 23161 | } |
d97bc12b | 23162 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23163 | } |
23164 | } | |
23165 | ||
f9aca02d | 23166 | static void |
d97bc12b | 23167 | dump_die_for_error (struct die_info *die) |
c906108c | 23168 | { |
d97bc12b DE |
23169 | dump_die_shallow (gdb_stderr, 0, die); |
23170 | } | |
23171 | ||
23172 | static void | |
23173 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23174 | { | |
23175 | int indent = level * 4; | |
23176 | ||
23177 | gdb_assert (die != NULL); | |
23178 | ||
23179 | if (level >= max_level) | |
23180 | return; | |
23181 | ||
23182 | dump_die_shallow (f, indent, die); | |
23183 | ||
23184 | if (die->child != NULL) | |
c906108c | 23185 | { |
d97bc12b DE |
23186 | print_spaces (indent, f); |
23187 | fprintf_unfiltered (f, " Children:"); | |
23188 | if (level + 1 < max_level) | |
23189 | { | |
23190 | fprintf_unfiltered (f, "\n"); | |
23191 | dump_die_1 (f, level + 1, max_level, die->child); | |
23192 | } | |
23193 | else | |
23194 | { | |
3e43a32a MS |
23195 | fprintf_unfiltered (f, |
23196 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23197 | } |
23198 | } | |
23199 | ||
23200 | if (die->sibling != NULL && level > 0) | |
23201 | { | |
23202 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23203 | } |
23204 | } | |
23205 | ||
d97bc12b DE |
23206 | /* This is called from the pdie macro in gdbinit.in. |
23207 | It's not static so gcc will keep a copy callable from gdb. */ | |
23208 | ||
23209 | void | |
23210 | dump_die (struct die_info *die, int max_level) | |
23211 | { | |
23212 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23213 | } | |
23214 | ||
f9aca02d | 23215 | static void |
51545339 | 23216 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23217 | { |
51545339 | 23218 | void **slot; |
c906108c | 23219 | |
9c541725 PA |
23220 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23221 | to_underlying (die->sect_off), | |
b64f50a1 | 23222 | INSERT); |
51545339 DJ |
23223 | |
23224 | *slot = die; | |
c906108c SS |
23225 | } |
23226 | ||
b64f50a1 JK |
23227 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
23228 | required kind. */ | |
23229 | ||
23230 | static sect_offset | |
ff39bb5e | 23231 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 23232 | { |
7771576e | 23233 | if (attr_form_is_ref (attr)) |
9c541725 | 23234 | return (sect_offset) DW_UNSND (attr); |
93311388 DE |
23235 | |
23236 | complaint (&symfile_complaints, | |
23237 | _("unsupported die ref attribute form: '%s'"), | |
23238 | dwarf_form_name (attr->form)); | |
9c541725 | 23239 | return {}; |
c906108c SS |
23240 | } |
23241 | ||
43bbcdc2 PH |
23242 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
23243 | * the value held by the attribute is not constant. */ | |
a02abb62 | 23244 | |
43bbcdc2 | 23245 | static LONGEST |
ff39bb5e | 23246 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 23247 | { |
663c44ac | 23248 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
23249 | return DW_SND (attr); |
23250 | else if (attr->form == DW_FORM_udata | |
23251 | || attr->form == DW_FORM_data1 | |
23252 | || attr->form == DW_FORM_data2 | |
23253 | || attr->form == DW_FORM_data4 | |
23254 | || attr->form == DW_FORM_data8) | |
23255 | return DW_UNSND (attr); | |
23256 | else | |
23257 | { | |
0224619f | 23258 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
23259 | complaint (&symfile_complaints, |
23260 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
23261 | dwarf_form_name (attr->form)); |
23262 | return default_value; | |
23263 | } | |
23264 | } | |
23265 | ||
348e048f DE |
23266 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23267 | On entry *REF_CU is the CU of SRC_DIE. | |
23268 | On exit *REF_CU is the CU of the result. */ | |
23269 | ||
23270 | static struct die_info * | |
ff39bb5e | 23271 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23272 | struct dwarf2_cu **ref_cu) |
23273 | { | |
23274 | struct die_info *die; | |
23275 | ||
7771576e | 23276 | if (attr_form_is_ref (attr)) |
348e048f | 23277 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23278 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23279 | die = follow_die_sig (src_die, attr, ref_cu); |
23280 | else | |
23281 | { | |
23282 | dump_die_for_error (src_die); | |
23283 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 23284 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
23285 | } |
23286 | ||
23287 | return die; | |
03dd20cc DJ |
23288 | } |
23289 | ||
5c631832 | 23290 | /* Follow reference OFFSET. |
673bfd45 DE |
23291 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23292 | On exit *REF_CU is the CU of the result. | |
23293 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23294 | |
f9aca02d | 23295 | static struct die_info * |
9c541725 | 23296 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23297 | struct dwarf2_cu **ref_cu) |
c906108c | 23298 | { |
10b3939b | 23299 | struct die_info temp_die; |
f2f0e013 | 23300 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
23301 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23302 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23303 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
10b3939b | 23304 | |
348e048f DE |
23305 | gdb_assert (cu->per_cu != NULL); |
23306 | ||
98bfdba5 PA |
23307 | target_cu = cu; |
23308 | ||
3019eac3 | 23309 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23310 | { |
23311 | /* .debug_types CUs cannot reference anything outside their CU. | |
23312 | If they need to, they have to reference a signatured type via | |
55f1336d | 23313 | DW_FORM_ref_sig8. */ |
9c541725 | 23314 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23315 | return NULL; |
348e048f | 23316 | } |
36586728 | 23317 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23318 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23319 | { |
23320 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23321 | |
9c541725 | 23322 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23323 | dwarf2_per_objfile); |
03dd20cc DJ |
23324 | |
23325 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
23326 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
23327 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 23328 | |
10b3939b DJ |
23329 | target_cu = per_cu->cu; |
23330 | } | |
98bfdba5 PA |
23331 | else if (cu->dies == NULL) |
23332 | { | |
23333 | /* We're loading full DIEs during partial symbol reading. */ | |
23334 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 23335 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 23336 | } |
c906108c | 23337 | |
f2f0e013 | 23338 | *ref_cu = target_cu; |
9c541725 | 23339 | temp_die.sect_off = sect_off; |
9a3c8263 | 23340 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23341 | &temp_die, |
23342 | to_underlying (sect_off)); | |
5c631832 | 23343 | } |
10b3939b | 23344 | |
5c631832 JK |
23345 | /* Follow reference attribute ATTR of SRC_DIE. |
23346 | On entry *REF_CU is the CU of SRC_DIE. | |
23347 | On exit *REF_CU is the CU of the result. */ | |
23348 | ||
23349 | static struct die_info * | |
ff39bb5e | 23350 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23351 | struct dwarf2_cu **ref_cu) |
23352 | { | |
9c541725 | 23353 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23354 | struct dwarf2_cu *cu = *ref_cu; |
23355 | struct die_info *die; | |
23356 | ||
9c541725 | 23357 | die = follow_die_offset (sect_off, |
36586728 TT |
23358 | (attr->form == DW_FORM_GNU_ref_alt |
23359 | || cu->per_cu->is_dwz), | |
23360 | ref_cu); | |
5c631832 | 23361 | if (!die) |
9d8780f0 SM |
23362 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23363 | "at %s [in module %s]"), | |
23364 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23365 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23366 | |
5c631832 JK |
23367 | return die; |
23368 | } | |
23369 | ||
9c541725 | 23370 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23371 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23372 | dwarf2_locexpr_baton->data has lifetime of |
23373 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23374 | |
23375 | struct dwarf2_locexpr_baton | |
9c541725 | 23376 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23377 | struct dwarf2_per_cu_data *per_cu, |
23378 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23379 | void *baton) | |
5c631832 | 23380 | { |
918dd910 | 23381 | struct dwarf2_cu *cu; |
5c631832 JK |
23382 | struct die_info *die; |
23383 | struct attribute *attr; | |
23384 | struct dwarf2_locexpr_baton retval; | |
e3b94546 | 23385 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ed2dc618 SM |
23386 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23387 | = get_dwarf2_per_objfile (objfile); | |
8cf6f0b1 | 23388 | |
918dd910 JK |
23389 | if (per_cu->cu == NULL) |
23390 | load_cu (per_cu); | |
23391 | cu = per_cu->cu; | |
cc12ce38 DE |
23392 | if (cu == NULL) |
23393 | { | |
23394 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23395 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23396 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23397 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23398 | } |
918dd910 | 23399 | |
9c541725 | 23400 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23401 | if (!die) |
9d8780f0 SM |
23402 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23403 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23404 | |
23405 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23406 | if (!attr) | |
23407 | { | |
e103e986 JK |
23408 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23409 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23410 | |
e103e986 | 23411 | retval.data = NULL; |
5c631832 JK |
23412 | retval.size = 0; |
23413 | } | |
8cf6f0b1 TT |
23414 | else if (attr_form_is_section_offset (attr)) |
23415 | { | |
23416 | struct dwarf2_loclist_baton loclist_baton; | |
23417 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23418 | size_t size; | |
23419 | ||
23420 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23421 | ||
23422 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23423 | &size, pc); | |
23424 | retval.size = size; | |
23425 | } | |
5c631832 JK |
23426 | else |
23427 | { | |
23428 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23429 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23430 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23431 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23432 | |
23433 | retval.data = DW_BLOCK (attr)->data; | |
23434 | retval.size = DW_BLOCK (attr)->size; | |
23435 | } | |
23436 | retval.per_cu = cu->per_cu; | |
918dd910 | 23437 | |
ed2dc618 | 23438 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23439 | |
5c631832 | 23440 | return retval; |
348e048f DE |
23441 | } |
23442 | ||
8b9737bf TT |
23443 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23444 | offset. */ | |
23445 | ||
23446 | struct dwarf2_locexpr_baton | |
23447 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23448 | struct dwarf2_per_cu_data *per_cu, | |
23449 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23450 | void *baton) | |
23451 | { | |
9c541725 | 23452 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23453 | |
9c541725 | 23454 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23455 | } |
23456 | ||
b6807d98 TT |
23457 | /* Write a constant of a given type as target-ordered bytes into |
23458 | OBSTACK. */ | |
23459 | ||
23460 | static const gdb_byte * | |
23461 | write_constant_as_bytes (struct obstack *obstack, | |
23462 | enum bfd_endian byte_order, | |
23463 | struct type *type, | |
23464 | ULONGEST value, | |
23465 | LONGEST *len) | |
23466 | { | |
23467 | gdb_byte *result; | |
23468 | ||
23469 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23470 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23471 | store_unsigned_integer (result, *len, byte_order, value); |
23472 | ||
23473 | return result; | |
23474 | } | |
23475 | ||
23476 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23477 | pointer to the constant bytes and set LEN to the length of the | |
23478 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23479 | does not have a DW_AT_const_value, return NULL. */ | |
23480 | ||
23481 | const gdb_byte * | |
9c541725 | 23482 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23483 | struct dwarf2_per_cu_data *per_cu, |
23484 | struct obstack *obstack, | |
23485 | LONGEST *len) | |
23486 | { | |
23487 | struct dwarf2_cu *cu; | |
23488 | struct die_info *die; | |
23489 | struct attribute *attr; | |
23490 | const gdb_byte *result = NULL; | |
23491 | struct type *type; | |
23492 | LONGEST value; | |
23493 | enum bfd_endian byte_order; | |
e3b94546 | 23494 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23495 | |
b6807d98 TT |
23496 | if (per_cu->cu == NULL) |
23497 | load_cu (per_cu); | |
23498 | cu = per_cu->cu; | |
cc12ce38 DE |
23499 | if (cu == NULL) |
23500 | { | |
23501 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23502 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23503 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23504 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23505 | } |
b6807d98 | 23506 | |
9c541725 | 23507 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23508 | if (!die) |
9d8780f0 SM |
23509 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23510 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23511 | |
23512 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23513 | if (attr == NULL) | |
23514 | return NULL; | |
23515 | ||
e3b94546 | 23516 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23517 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23518 | ||
23519 | switch (attr->form) | |
23520 | { | |
23521 | case DW_FORM_addr: | |
23522 | case DW_FORM_GNU_addr_index: | |
23523 | { | |
23524 | gdb_byte *tem; | |
23525 | ||
23526 | *len = cu->header.addr_size; | |
224c3ddb | 23527 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23528 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23529 | result = tem; | |
23530 | } | |
23531 | break; | |
23532 | case DW_FORM_string: | |
23533 | case DW_FORM_strp: | |
23534 | case DW_FORM_GNU_str_index: | |
23535 | case DW_FORM_GNU_strp_alt: | |
23536 | /* DW_STRING is already allocated on the objfile obstack, point | |
23537 | directly to it. */ | |
23538 | result = (const gdb_byte *) DW_STRING (attr); | |
23539 | *len = strlen (DW_STRING (attr)); | |
23540 | break; | |
23541 | case DW_FORM_block1: | |
23542 | case DW_FORM_block2: | |
23543 | case DW_FORM_block4: | |
23544 | case DW_FORM_block: | |
23545 | case DW_FORM_exprloc: | |
0224619f | 23546 | case DW_FORM_data16: |
b6807d98 TT |
23547 | result = DW_BLOCK (attr)->data; |
23548 | *len = DW_BLOCK (attr)->size; | |
23549 | break; | |
23550 | ||
23551 | /* The DW_AT_const_value attributes are supposed to carry the | |
23552 | symbol's value "represented as it would be on the target | |
23553 | architecture." By the time we get here, it's already been | |
23554 | converted to host endianness, so we just need to sign- or | |
23555 | zero-extend it as appropriate. */ | |
23556 | case DW_FORM_data1: | |
23557 | type = die_type (die, cu); | |
23558 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23559 | if (result == NULL) | |
23560 | result = write_constant_as_bytes (obstack, byte_order, | |
23561 | type, value, len); | |
23562 | break; | |
23563 | case DW_FORM_data2: | |
23564 | type = die_type (die, cu); | |
23565 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23566 | if (result == NULL) | |
23567 | result = write_constant_as_bytes (obstack, byte_order, | |
23568 | type, value, len); | |
23569 | break; | |
23570 | case DW_FORM_data4: | |
23571 | type = die_type (die, cu); | |
23572 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23573 | if (result == NULL) | |
23574 | result = write_constant_as_bytes (obstack, byte_order, | |
23575 | type, value, len); | |
23576 | break; | |
23577 | case DW_FORM_data8: | |
23578 | type = die_type (die, cu); | |
23579 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23580 | if (result == NULL) | |
23581 | result = write_constant_as_bytes (obstack, byte_order, | |
23582 | type, value, len); | |
23583 | break; | |
23584 | ||
23585 | case DW_FORM_sdata: | |
663c44ac | 23586 | case DW_FORM_implicit_const: |
b6807d98 TT |
23587 | type = die_type (die, cu); |
23588 | result = write_constant_as_bytes (obstack, byte_order, | |
23589 | type, DW_SND (attr), len); | |
23590 | break; | |
23591 | ||
23592 | case DW_FORM_udata: | |
23593 | type = die_type (die, cu); | |
23594 | result = write_constant_as_bytes (obstack, byte_order, | |
23595 | type, DW_UNSND (attr), len); | |
23596 | break; | |
23597 | ||
23598 | default: | |
23599 | complaint (&symfile_complaints, | |
23600 | _("unsupported const value attribute form: '%s'"), | |
23601 | dwarf_form_name (attr->form)); | |
23602 | break; | |
23603 | } | |
23604 | ||
23605 | return result; | |
23606 | } | |
23607 | ||
7942e96e AA |
23608 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23609 | valid type for this die is found. */ | |
23610 | ||
23611 | struct type * | |
9c541725 | 23612 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23613 | struct dwarf2_per_cu_data *per_cu) |
23614 | { | |
23615 | struct dwarf2_cu *cu; | |
23616 | struct die_info *die; | |
23617 | ||
7942e96e AA |
23618 | if (per_cu->cu == NULL) |
23619 | load_cu (per_cu); | |
23620 | cu = per_cu->cu; | |
23621 | if (!cu) | |
23622 | return NULL; | |
23623 | ||
9c541725 | 23624 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23625 | if (!die) |
23626 | return NULL; | |
23627 | ||
23628 | return die_type (die, cu); | |
23629 | } | |
23630 | ||
8a9b8146 TT |
23631 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23632 | PER_CU. */ | |
23633 | ||
23634 | struct type * | |
b64f50a1 | 23635 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23636 | struct dwarf2_per_cu_data *per_cu) |
23637 | { | |
9c541725 | 23638 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23639 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23640 | } |
23641 | ||
ac9ec31b | 23642 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23643 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23644 | On exit *REF_CU is the CU of the result. |
23645 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23646 | |
23647 | static struct die_info * | |
ac9ec31b DE |
23648 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23649 | struct dwarf2_cu **ref_cu) | |
348e048f | 23650 | { |
348e048f | 23651 | struct die_info temp_die; |
348e048f DE |
23652 | struct dwarf2_cu *sig_cu; |
23653 | struct die_info *die; | |
23654 | ||
ac9ec31b DE |
23655 | /* While it might be nice to assert sig_type->type == NULL here, |
23656 | we can get here for DW_AT_imported_declaration where we need | |
23657 | the DIE not the type. */ | |
348e048f DE |
23658 | |
23659 | /* If necessary, add it to the queue and load its DIEs. */ | |
23660 | ||
95554aad | 23661 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23662 | read_signatured_type (sig_type); |
348e048f | 23663 | |
348e048f | 23664 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23665 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23666 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23667 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23668 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23669 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23670 | if (die) |
23671 | { | |
ed2dc618 | 23672 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23673 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23674 | |
796a7ff8 DE |
23675 | /* For .gdb_index version 7 keep track of included TUs. |
23676 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23677 | if (dwarf2_per_objfile->index_table != NULL | |
23678 | && dwarf2_per_objfile->index_table->version <= 7) | |
23679 | { | |
23680 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23681 | (*ref_cu)->per_cu->imported_symtabs, | |
23682 | sig_cu->per_cu); | |
23683 | } | |
23684 | ||
348e048f DE |
23685 | *ref_cu = sig_cu; |
23686 | return die; | |
23687 | } | |
23688 | ||
ac9ec31b DE |
23689 | return NULL; |
23690 | } | |
23691 | ||
23692 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23693 | On entry *REF_CU is the CU of SRC_DIE. | |
23694 | On exit *REF_CU is the CU of the result. | |
23695 | The result is the DIE of the type. | |
23696 | If the referenced type cannot be found an error is thrown. */ | |
23697 | ||
23698 | static struct die_info * | |
ff39bb5e | 23699 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23700 | struct dwarf2_cu **ref_cu) |
23701 | { | |
23702 | ULONGEST signature = DW_SIGNATURE (attr); | |
23703 | struct signatured_type *sig_type; | |
23704 | struct die_info *die; | |
23705 | ||
23706 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23707 | ||
a2ce51a0 | 23708 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23709 | /* sig_type will be NULL if the signatured type is missing from |
23710 | the debug info. */ | |
23711 | if (sig_type == NULL) | |
23712 | { | |
23713 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23714 | " from DIE at %s [in module %s]"), |
23715 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23716 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23717 | } |
23718 | ||
23719 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23720 | if (die == NULL) | |
23721 | { | |
23722 | dump_die_for_error (src_die); | |
23723 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23724 | " from DIE at %s [in module %s]"), |
23725 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23726 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23727 | } |
23728 | ||
23729 | return die; | |
23730 | } | |
23731 | ||
23732 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23733 | reading in and processing the type unit if necessary. */ | |
23734 | ||
23735 | static struct type * | |
23736 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23737 | struct dwarf2_cu *cu) | |
23738 | { | |
518817b3 SM |
23739 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23740 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23741 | struct signatured_type *sig_type; |
23742 | struct dwarf2_cu *type_cu; | |
23743 | struct die_info *type_die; | |
23744 | struct type *type; | |
23745 | ||
a2ce51a0 | 23746 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23747 | /* sig_type will be NULL if the signatured type is missing from |
23748 | the debug info. */ | |
23749 | if (sig_type == NULL) | |
23750 | { | |
23751 | complaint (&symfile_complaints, | |
23752 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23753 | " from DIE at %s [in module %s]"), |
23754 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23755 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23756 | return build_error_marker_type (cu, die); |
23757 | } | |
23758 | ||
23759 | /* If we already know the type we're done. */ | |
23760 | if (sig_type->type != NULL) | |
23761 | return sig_type->type; | |
23762 | ||
23763 | type_cu = cu; | |
23764 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23765 | if (type_die != NULL) | |
23766 | { | |
23767 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23768 | is created. This is important, for example, because for c++ classes | |
23769 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23770 | type = read_type_die (type_die, type_cu); | |
23771 | if (type == NULL) | |
23772 | { | |
23773 | complaint (&symfile_complaints, | |
23774 | _("Dwarf Error: Cannot build signatured type %s" | |
9d8780f0 SM |
23775 | " referenced from DIE at %s [in module %s]"), |
23776 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23777 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23778 | type = build_error_marker_type (cu, die); |
23779 | } | |
23780 | } | |
23781 | else | |
23782 | { | |
23783 | complaint (&symfile_complaints, | |
23784 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23785 | " from DIE at %s [in module %s]"), |
23786 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23787 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23788 | type = build_error_marker_type (cu, die); |
23789 | } | |
23790 | sig_type->type = type; | |
23791 | ||
23792 | return type; | |
23793 | } | |
23794 | ||
23795 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23796 | reading in and processing the type unit if necessary. */ | |
23797 | ||
23798 | static struct type * | |
ff39bb5e | 23799 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23800 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23801 | { |
23802 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23803 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23804 | { |
23805 | struct dwarf2_cu *type_cu = cu; | |
23806 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23807 | ||
23808 | return read_type_die (type_die, type_cu); | |
23809 | } | |
23810 | else if (attr->form == DW_FORM_ref_sig8) | |
23811 | { | |
23812 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23813 | } | |
23814 | else | |
23815 | { | |
518817b3 SM |
23816 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23817 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23818 | |
ac9ec31b DE |
23819 | complaint (&symfile_complaints, |
23820 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
9d8780f0 SM |
23821 | " at %s [in module %s]"), |
23822 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23823 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23824 | return build_error_marker_type (cu, die); |
23825 | } | |
348e048f DE |
23826 | } |
23827 | ||
e5fe5e75 | 23828 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23829 | |
23830 | static void | |
e5fe5e75 | 23831 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23832 | { |
52dc124a | 23833 | struct signatured_type *sig_type; |
348e048f | 23834 | |
f4dc4d17 DE |
23835 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23836 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23837 | ||
6721b2ec DE |
23838 | /* We have the per_cu, but we need the signatured_type. |
23839 | Fortunately this is an easy translation. */ | |
23840 | gdb_assert (per_cu->is_debug_types); | |
23841 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23842 | |
6721b2ec | 23843 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23844 | |
52dc124a | 23845 | read_signatured_type (sig_type); |
348e048f | 23846 | |
6721b2ec | 23847 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23848 | } |
23849 | ||
dee91e82 DE |
23850 | /* die_reader_func for read_signatured_type. |
23851 | This is identical to load_full_comp_unit_reader, | |
23852 | but is kept separate for now. */ | |
348e048f DE |
23853 | |
23854 | static void | |
dee91e82 | 23855 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23856 | const gdb_byte *info_ptr, |
dee91e82 DE |
23857 | struct die_info *comp_unit_die, |
23858 | int has_children, | |
23859 | void *data) | |
348e048f | 23860 | { |
dee91e82 | 23861 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23862 | |
dee91e82 DE |
23863 | gdb_assert (cu->die_hash == NULL); |
23864 | cu->die_hash = | |
23865 | htab_create_alloc_ex (cu->header.length / 12, | |
23866 | die_hash, | |
23867 | die_eq, | |
23868 | NULL, | |
23869 | &cu->comp_unit_obstack, | |
23870 | hashtab_obstack_allocate, | |
23871 | dummy_obstack_deallocate); | |
348e048f | 23872 | |
dee91e82 DE |
23873 | if (has_children) |
23874 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23875 | &info_ptr, comp_unit_die); | |
23876 | cu->dies = comp_unit_die; | |
23877 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23878 | |
23879 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23880 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23881 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23882 | or we won't be able to build types correctly. |
23883 | Similarly, if we do not read the producer, we can not apply | |
23884 | producer-specific interpretation. */ | |
95554aad | 23885 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23886 | } |
348e048f | 23887 | |
3019eac3 DE |
23888 | /* Read in a signatured type and build its CU and DIEs. |
23889 | If the type is a stub for the real type in a DWO file, | |
23890 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23891 | |
23892 | static void | |
23893 | read_signatured_type (struct signatured_type *sig_type) | |
23894 | { | |
23895 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23896 | |
3019eac3 | 23897 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23898 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23899 | |
f4dc4d17 DE |
23900 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
23901 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 23902 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23903 | } |
23904 | ||
c906108c SS |
23905 | /* Decode simple location descriptions. |
23906 | Given a pointer to a dwarf block that defines a location, compute | |
23907 | the location and return the value. | |
23908 | ||
4cecd739 DJ |
23909 | NOTE drow/2003-11-18: This function is called in two situations |
23910 | now: for the address of static or global variables (partial symbols | |
23911 | only) and for offsets into structures which are expected to be | |
23912 | (more or less) constant. The partial symbol case should go away, | |
23913 | and only the constant case should remain. That will let this | |
23914 | function complain more accurately. A few special modes are allowed | |
23915 | without complaint for global variables (for instance, global | |
23916 | register values and thread-local values). | |
c906108c SS |
23917 | |
23918 | A location description containing no operations indicates that the | |
4cecd739 | 23919 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23920 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23921 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23922 | complaint. |
23923 | ||
23924 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23925 | |
23926 | static CORE_ADDR | |
e7c27a73 | 23927 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23928 | { |
518817b3 | 23929 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23930 | size_t i; |
23931 | size_t size = blk->size; | |
d521ce57 | 23932 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23933 | CORE_ADDR stack[64]; |
23934 | int stacki; | |
23935 | unsigned int bytes_read, unsnd; | |
23936 | gdb_byte op; | |
c906108c | 23937 | |
21ae7a4d JK |
23938 | i = 0; |
23939 | stacki = 0; | |
23940 | stack[stacki] = 0; | |
23941 | stack[++stacki] = 0; | |
23942 | ||
23943 | while (i < size) | |
23944 | { | |
23945 | op = data[i++]; | |
23946 | switch (op) | |
23947 | { | |
23948 | case DW_OP_lit0: | |
23949 | case DW_OP_lit1: | |
23950 | case DW_OP_lit2: | |
23951 | case DW_OP_lit3: | |
23952 | case DW_OP_lit4: | |
23953 | case DW_OP_lit5: | |
23954 | case DW_OP_lit6: | |
23955 | case DW_OP_lit7: | |
23956 | case DW_OP_lit8: | |
23957 | case DW_OP_lit9: | |
23958 | case DW_OP_lit10: | |
23959 | case DW_OP_lit11: | |
23960 | case DW_OP_lit12: | |
23961 | case DW_OP_lit13: | |
23962 | case DW_OP_lit14: | |
23963 | case DW_OP_lit15: | |
23964 | case DW_OP_lit16: | |
23965 | case DW_OP_lit17: | |
23966 | case DW_OP_lit18: | |
23967 | case DW_OP_lit19: | |
23968 | case DW_OP_lit20: | |
23969 | case DW_OP_lit21: | |
23970 | case DW_OP_lit22: | |
23971 | case DW_OP_lit23: | |
23972 | case DW_OP_lit24: | |
23973 | case DW_OP_lit25: | |
23974 | case DW_OP_lit26: | |
23975 | case DW_OP_lit27: | |
23976 | case DW_OP_lit28: | |
23977 | case DW_OP_lit29: | |
23978 | case DW_OP_lit30: | |
23979 | case DW_OP_lit31: | |
23980 | stack[++stacki] = op - DW_OP_lit0; | |
23981 | break; | |
f1bea926 | 23982 | |
21ae7a4d JK |
23983 | case DW_OP_reg0: |
23984 | case DW_OP_reg1: | |
23985 | case DW_OP_reg2: | |
23986 | case DW_OP_reg3: | |
23987 | case DW_OP_reg4: | |
23988 | case DW_OP_reg5: | |
23989 | case DW_OP_reg6: | |
23990 | case DW_OP_reg7: | |
23991 | case DW_OP_reg8: | |
23992 | case DW_OP_reg9: | |
23993 | case DW_OP_reg10: | |
23994 | case DW_OP_reg11: | |
23995 | case DW_OP_reg12: | |
23996 | case DW_OP_reg13: | |
23997 | case DW_OP_reg14: | |
23998 | case DW_OP_reg15: | |
23999 | case DW_OP_reg16: | |
24000 | case DW_OP_reg17: | |
24001 | case DW_OP_reg18: | |
24002 | case DW_OP_reg19: | |
24003 | case DW_OP_reg20: | |
24004 | case DW_OP_reg21: | |
24005 | case DW_OP_reg22: | |
24006 | case DW_OP_reg23: | |
24007 | case DW_OP_reg24: | |
24008 | case DW_OP_reg25: | |
24009 | case DW_OP_reg26: | |
24010 | case DW_OP_reg27: | |
24011 | case DW_OP_reg28: | |
24012 | case DW_OP_reg29: | |
24013 | case DW_OP_reg30: | |
24014 | case DW_OP_reg31: | |
24015 | stack[++stacki] = op - DW_OP_reg0; | |
24016 | if (i < size) | |
24017 | dwarf2_complex_location_expr_complaint (); | |
24018 | break; | |
c906108c | 24019 | |
21ae7a4d JK |
24020 | case DW_OP_regx: |
24021 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24022 | i += bytes_read; | |
24023 | stack[++stacki] = unsnd; | |
24024 | if (i < size) | |
24025 | dwarf2_complex_location_expr_complaint (); | |
24026 | break; | |
c906108c | 24027 | |
21ae7a4d JK |
24028 | case DW_OP_addr: |
24029 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
24030 | cu, &bytes_read); | |
24031 | i += bytes_read; | |
24032 | break; | |
d53d4ac5 | 24033 | |
21ae7a4d JK |
24034 | case DW_OP_const1u: |
24035 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24036 | i += 1; | |
24037 | break; | |
24038 | ||
24039 | case DW_OP_const1s: | |
24040 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24041 | i += 1; | |
24042 | break; | |
24043 | ||
24044 | case DW_OP_const2u: | |
24045 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24046 | i += 2; | |
24047 | break; | |
24048 | ||
24049 | case DW_OP_const2s: | |
24050 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24051 | i += 2; | |
24052 | break; | |
d53d4ac5 | 24053 | |
21ae7a4d JK |
24054 | case DW_OP_const4u: |
24055 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24056 | i += 4; | |
24057 | break; | |
24058 | ||
24059 | case DW_OP_const4s: | |
24060 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24061 | i += 4; | |
24062 | break; | |
24063 | ||
585861ea JK |
24064 | case DW_OP_const8u: |
24065 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24066 | i += 8; | |
24067 | break; | |
24068 | ||
21ae7a4d JK |
24069 | case DW_OP_constu: |
24070 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24071 | &bytes_read); | |
24072 | i += bytes_read; | |
24073 | break; | |
24074 | ||
24075 | case DW_OP_consts: | |
24076 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24077 | i += bytes_read; | |
24078 | break; | |
24079 | ||
24080 | case DW_OP_dup: | |
24081 | stack[stacki + 1] = stack[stacki]; | |
24082 | stacki++; | |
24083 | break; | |
24084 | ||
24085 | case DW_OP_plus: | |
24086 | stack[stacki - 1] += stack[stacki]; | |
24087 | stacki--; | |
24088 | break; | |
24089 | ||
24090 | case DW_OP_plus_uconst: | |
24091 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24092 | &bytes_read); | |
24093 | i += bytes_read; | |
24094 | break; | |
24095 | ||
24096 | case DW_OP_minus: | |
24097 | stack[stacki - 1] -= stack[stacki]; | |
24098 | stacki--; | |
24099 | break; | |
24100 | ||
24101 | case DW_OP_deref: | |
24102 | /* If we're not the last op, then we definitely can't encode | |
24103 | this using GDB's address_class enum. This is valid for partial | |
24104 | global symbols, although the variable's address will be bogus | |
24105 | in the psymtab. */ | |
24106 | if (i < size) | |
24107 | dwarf2_complex_location_expr_complaint (); | |
24108 | break; | |
24109 | ||
24110 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 24111 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24112 | /* The top of the stack has the offset from the beginning |
24113 | of the thread control block at which the variable is located. */ | |
24114 | /* Nothing should follow this operator, so the top of stack would | |
24115 | be returned. */ | |
24116 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24117 | address will be bogus in the psymtab. Make it always at least |
24118 | non-zero to not look as a variable garbage collected by linker | |
24119 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
24120 | if (i < size) |
24121 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 24122 | stack[stacki]++; |
21ae7a4d JK |
24123 | break; |
24124 | ||
24125 | case DW_OP_GNU_uninit: | |
24126 | break; | |
24127 | ||
3019eac3 | 24128 | case DW_OP_GNU_addr_index: |
49f6c839 | 24129 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24130 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24131 | &bytes_read); | |
24132 | i += bytes_read; | |
24133 | break; | |
24134 | ||
21ae7a4d JK |
24135 | default: |
24136 | { | |
f39c6ffd | 24137 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
24138 | |
24139 | if (name) | |
24140 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
24141 | name); | |
24142 | else | |
24143 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
24144 | op); | |
24145 | } | |
24146 | ||
24147 | return (stack[stacki]); | |
d53d4ac5 | 24148 | } |
3c6e0cb3 | 24149 | |
21ae7a4d JK |
24150 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
24151 | outside of the allocated space. Also enforce minimum>0. */ | |
24152 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
24153 | { | |
24154 | complaint (&symfile_complaints, | |
24155 | _("location description stack overflow")); | |
24156 | return 0; | |
24157 | } | |
24158 | ||
24159 | if (stacki <= 0) | |
24160 | { | |
24161 | complaint (&symfile_complaints, | |
24162 | _("location description stack underflow")); | |
24163 | return 0; | |
24164 | } | |
24165 | } | |
24166 | return (stack[stacki]); | |
c906108c SS |
24167 | } |
24168 | ||
24169 | /* memory allocation interface */ | |
24170 | ||
c906108c | 24171 | static struct dwarf_block * |
7b5a2f43 | 24172 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24173 | { |
8d749320 | 24174 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24175 | } |
24176 | ||
c906108c | 24177 | static struct die_info * |
b60c80d6 | 24178 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24179 | { |
24180 | struct die_info *die; | |
b60c80d6 DJ |
24181 | size_t size = sizeof (struct die_info); |
24182 | ||
24183 | if (num_attrs > 1) | |
24184 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24185 | |
b60c80d6 | 24186 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24187 | memset (die, 0, sizeof (struct die_info)); |
24188 | return (die); | |
24189 | } | |
2e276125 JB |
24190 | |
24191 | \f | |
24192 | /* Macro support. */ | |
24193 | ||
233d95b5 JK |
24194 | /* Return file name relative to the compilation directory of file number I in |
24195 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 24196 | responsible for freeing it. */ |
233d95b5 | 24197 | |
2e276125 | 24198 | static char * |
233d95b5 | 24199 | file_file_name (int file, struct line_header *lh) |
2e276125 | 24200 | { |
6a83a1e6 EZ |
24201 | /* Is the file number a valid index into the line header's file name |
24202 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24203 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 24204 | { |
8c43009f | 24205 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 24206 | |
8c43009f PA |
24207 | if (!IS_ABSOLUTE_PATH (fe.name)) |
24208 | { | |
24209 | const char *dir = fe.include_dir (lh); | |
24210 | if (dir != NULL) | |
24211 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
24212 | } | |
24213 | return xstrdup (fe.name); | |
6a83a1e6 | 24214 | } |
2e276125 JB |
24215 | else |
24216 | { | |
6a83a1e6 EZ |
24217 | /* The compiler produced a bogus file number. We can at least |
24218 | record the macro definitions made in the file, even if we | |
24219 | won't be able to find the file by name. */ | |
24220 | char fake_name[80]; | |
9a619af0 | 24221 | |
8c042590 PM |
24222 | xsnprintf (fake_name, sizeof (fake_name), |
24223 | "<bad macro file number %d>", file); | |
2e276125 | 24224 | |
6e70227d | 24225 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
24226 | _("bad file number in macro information (%d)"), |
24227 | file); | |
2e276125 | 24228 | |
6a83a1e6 | 24229 | return xstrdup (fake_name); |
2e276125 JB |
24230 | } |
24231 | } | |
24232 | ||
233d95b5 JK |
24233 | /* Return the full name of file number I in *LH's file name table. |
24234 | Use COMP_DIR as the name of the current directory of the | |
24235 | compilation. The result is allocated using xmalloc; the caller is | |
24236 | responsible for freeing it. */ | |
24237 | static char * | |
24238 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
24239 | { | |
24240 | /* Is the file number a valid index into the line header's file name | |
24241 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24242 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
24243 | { |
24244 | char *relative = file_file_name (file, lh); | |
24245 | ||
24246 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
24247 | return relative; | |
b36cec19 PA |
24248 | return reconcat (relative, comp_dir, SLASH_STRING, |
24249 | relative, (char *) NULL); | |
233d95b5 JK |
24250 | } |
24251 | else | |
24252 | return file_file_name (file, lh); | |
24253 | } | |
24254 | ||
2e276125 JB |
24255 | |
24256 | static struct macro_source_file * | |
24257 | macro_start_file (int file, int line, | |
24258 | struct macro_source_file *current_file, | |
43f3e411 | 24259 | struct line_header *lh) |
2e276125 | 24260 | { |
233d95b5 JK |
24261 | /* File name relative to the compilation directory of this source file. */ |
24262 | char *file_name = file_file_name (file, lh); | |
2e276125 | 24263 | |
2e276125 | 24264 | if (! current_file) |
abc9d0dc | 24265 | { |
fc474241 DE |
24266 | /* Note: We don't create a macro table for this compilation unit |
24267 | at all until we actually get a filename. */ | |
43f3e411 | 24268 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 24269 | |
abc9d0dc TT |
24270 | /* If we have no current file, then this must be the start_file |
24271 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
24272 | current_file = macro_set_main (macro_table, file_name); |
24273 | macro_define_special (macro_table); | |
abc9d0dc | 24274 | } |
2e276125 | 24275 | else |
233d95b5 | 24276 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 24277 | |
233d95b5 | 24278 | xfree (file_name); |
6e70227d | 24279 | |
2e276125 JB |
24280 | return current_file; |
24281 | } | |
24282 | ||
2e276125 JB |
24283 | static const char * |
24284 | consume_improper_spaces (const char *p, const char *body) | |
24285 | { | |
24286 | if (*p == ' ') | |
24287 | { | |
4d3c2250 | 24288 | complaint (&symfile_complaints, |
3e43a32a MS |
24289 | _("macro definition contains spaces " |
24290 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 24291 | body); |
2e276125 JB |
24292 | |
24293 | while (*p == ' ') | |
24294 | p++; | |
24295 | } | |
24296 | ||
24297 | return p; | |
24298 | } | |
24299 | ||
24300 | ||
24301 | static void | |
24302 | parse_macro_definition (struct macro_source_file *file, int line, | |
24303 | const char *body) | |
24304 | { | |
24305 | const char *p; | |
24306 | ||
24307 | /* The body string takes one of two forms. For object-like macro | |
24308 | definitions, it should be: | |
24309 | ||
24310 | <macro name> " " <definition> | |
24311 | ||
24312 | For function-like macro definitions, it should be: | |
24313 | ||
24314 | <macro name> "() " <definition> | |
24315 | or | |
24316 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24317 | ||
24318 | Spaces may appear only where explicitly indicated, and in the | |
24319 | <definition>. | |
24320 | ||
24321 | The Dwarf 2 spec says that an object-like macro's name is always | |
24322 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24323 | the space when the macro's definition is the empty string. |
2e276125 JB |
24324 | |
24325 | The Dwarf 2 spec says that there should be no spaces between the | |
24326 | formal arguments in a function-like macro's formal argument list, | |
24327 | but versions of GCC around March 2002 include spaces after the | |
24328 | commas. */ | |
24329 | ||
24330 | ||
24331 | /* Find the extent of the macro name. The macro name is terminated | |
24332 | by either a space or null character (for an object-like macro) or | |
24333 | an opening paren (for a function-like macro). */ | |
24334 | for (p = body; *p; p++) | |
24335 | if (*p == ' ' || *p == '(') | |
24336 | break; | |
24337 | ||
24338 | if (*p == ' ' || *p == '\0') | |
24339 | { | |
24340 | /* It's an object-like macro. */ | |
24341 | int name_len = p - body; | |
3f8a7804 | 24342 | char *name = savestring (body, name_len); |
2e276125 JB |
24343 | const char *replacement; |
24344 | ||
24345 | if (*p == ' ') | |
24346 | replacement = body + name_len + 1; | |
24347 | else | |
24348 | { | |
4d3c2250 | 24349 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24350 | replacement = body + name_len; |
24351 | } | |
6e70227d | 24352 | |
2e276125 JB |
24353 | macro_define_object (file, line, name, replacement); |
24354 | ||
24355 | xfree (name); | |
24356 | } | |
24357 | else if (*p == '(') | |
24358 | { | |
24359 | /* It's a function-like macro. */ | |
3f8a7804 | 24360 | char *name = savestring (body, p - body); |
2e276125 JB |
24361 | int argc = 0; |
24362 | int argv_size = 1; | |
8d749320 | 24363 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24364 | |
24365 | p++; | |
24366 | ||
24367 | p = consume_improper_spaces (p, body); | |
24368 | ||
24369 | /* Parse the formal argument list. */ | |
24370 | while (*p && *p != ')') | |
24371 | { | |
24372 | /* Find the extent of the current argument name. */ | |
24373 | const char *arg_start = p; | |
24374 | ||
24375 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24376 | p++; | |
24377 | ||
24378 | if (! *p || p == arg_start) | |
4d3c2250 | 24379 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24380 | else |
24381 | { | |
24382 | /* Make sure argv has room for the new argument. */ | |
24383 | if (argc >= argv_size) | |
24384 | { | |
24385 | argv_size *= 2; | |
224c3ddb | 24386 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24387 | } |
24388 | ||
3f8a7804 | 24389 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24390 | } |
24391 | ||
24392 | p = consume_improper_spaces (p, body); | |
24393 | ||
24394 | /* Consume the comma, if present. */ | |
24395 | if (*p == ',') | |
24396 | { | |
24397 | p++; | |
24398 | ||
24399 | p = consume_improper_spaces (p, body); | |
24400 | } | |
24401 | } | |
24402 | ||
24403 | if (*p == ')') | |
24404 | { | |
24405 | p++; | |
24406 | ||
24407 | if (*p == ' ') | |
24408 | /* Perfectly formed definition, no complaints. */ | |
24409 | macro_define_function (file, line, name, | |
6e70227d | 24410 | argc, (const char **) argv, |
2e276125 JB |
24411 | p + 1); |
24412 | else if (*p == '\0') | |
24413 | { | |
24414 | /* Complain, but do define it. */ | |
4d3c2250 | 24415 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24416 | macro_define_function (file, line, name, |
6e70227d | 24417 | argc, (const char **) argv, |
2e276125 JB |
24418 | p); |
24419 | } | |
24420 | else | |
24421 | /* Just complain. */ | |
4d3c2250 | 24422 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24423 | } |
24424 | else | |
24425 | /* Just complain. */ | |
4d3c2250 | 24426 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24427 | |
24428 | xfree (name); | |
24429 | { | |
24430 | int i; | |
24431 | ||
24432 | for (i = 0; i < argc; i++) | |
24433 | xfree (argv[i]); | |
24434 | } | |
24435 | xfree (argv); | |
24436 | } | |
24437 | else | |
4d3c2250 | 24438 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24439 | } |
24440 | ||
cf2c3c16 TT |
24441 | /* Skip some bytes from BYTES according to the form given in FORM. |
24442 | Returns the new pointer. */ | |
2e276125 | 24443 | |
d521ce57 TT |
24444 | static const gdb_byte * |
24445 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24446 | enum dwarf_form form, |
24447 | unsigned int offset_size, | |
24448 | struct dwarf2_section_info *section) | |
2e276125 | 24449 | { |
cf2c3c16 | 24450 | unsigned int bytes_read; |
2e276125 | 24451 | |
cf2c3c16 | 24452 | switch (form) |
2e276125 | 24453 | { |
cf2c3c16 TT |
24454 | case DW_FORM_data1: |
24455 | case DW_FORM_flag: | |
24456 | ++bytes; | |
24457 | break; | |
24458 | ||
24459 | case DW_FORM_data2: | |
24460 | bytes += 2; | |
24461 | break; | |
24462 | ||
24463 | case DW_FORM_data4: | |
24464 | bytes += 4; | |
24465 | break; | |
24466 | ||
24467 | case DW_FORM_data8: | |
24468 | bytes += 8; | |
24469 | break; | |
24470 | ||
0224619f JK |
24471 | case DW_FORM_data16: |
24472 | bytes += 16; | |
24473 | break; | |
24474 | ||
cf2c3c16 TT |
24475 | case DW_FORM_string: |
24476 | read_direct_string (abfd, bytes, &bytes_read); | |
24477 | bytes += bytes_read; | |
24478 | break; | |
24479 | ||
24480 | case DW_FORM_sec_offset: | |
24481 | case DW_FORM_strp: | |
36586728 | 24482 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24483 | bytes += offset_size; |
24484 | break; | |
24485 | ||
24486 | case DW_FORM_block: | |
24487 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24488 | bytes += bytes_read; | |
24489 | break; | |
24490 | ||
24491 | case DW_FORM_block1: | |
24492 | bytes += 1 + read_1_byte (abfd, bytes); | |
24493 | break; | |
24494 | case DW_FORM_block2: | |
24495 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24496 | break; | |
24497 | case DW_FORM_block4: | |
24498 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24499 | break; | |
24500 | ||
24501 | case DW_FORM_sdata: | |
24502 | case DW_FORM_udata: | |
3019eac3 DE |
24503 | case DW_FORM_GNU_addr_index: |
24504 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24505 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24506 | if (bytes == NULL) |
24507 | { | |
24508 | dwarf2_section_buffer_overflow_complaint (section); | |
24509 | return NULL; | |
24510 | } | |
cf2c3c16 TT |
24511 | break; |
24512 | ||
663c44ac JK |
24513 | case DW_FORM_implicit_const: |
24514 | break; | |
24515 | ||
cf2c3c16 TT |
24516 | default: |
24517 | { | |
cf2c3c16 TT |
24518 | complaint (&symfile_complaints, |
24519 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 24520 | form, get_section_name (section)); |
cf2c3c16 TT |
24521 | return NULL; |
24522 | } | |
2e276125 JB |
24523 | } |
24524 | ||
cf2c3c16 TT |
24525 | return bytes; |
24526 | } | |
757a13d0 | 24527 | |
cf2c3c16 TT |
24528 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24529 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24530 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24531 | |
d521ce57 | 24532 | static const gdb_byte * |
cf2c3c16 | 24533 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24534 | const gdb_byte **opcode_definitions, |
24535 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24536 | bfd *abfd, |
24537 | unsigned int offset_size, | |
24538 | struct dwarf2_section_info *section) | |
24539 | { | |
24540 | unsigned int bytes_read, i; | |
24541 | unsigned long arg; | |
d521ce57 | 24542 | const gdb_byte *defn; |
2e276125 | 24543 | |
cf2c3c16 | 24544 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24545 | { |
cf2c3c16 TT |
24546 | complaint (&symfile_complaints, |
24547 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
24548 | opcode); | |
24549 | return NULL; | |
24550 | } | |
2e276125 | 24551 | |
cf2c3c16 TT |
24552 | defn = opcode_definitions[opcode]; |
24553 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24554 | defn += bytes_read; | |
2e276125 | 24555 | |
cf2c3c16 TT |
24556 | for (i = 0; i < arg; ++i) |
24557 | { | |
aead7601 SM |
24558 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24559 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24560 | section); |
cf2c3c16 TT |
24561 | if (mac_ptr == NULL) |
24562 | { | |
24563 | /* skip_form_bytes already issued the complaint. */ | |
24564 | return NULL; | |
24565 | } | |
24566 | } | |
757a13d0 | 24567 | |
cf2c3c16 TT |
24568 | return mac_ptr; |
24569 | } | |
757a13d0 | 24570 | |
cf2c3c16 TT |
24571 | /* A helper function which parses the header of a macro section. |
24572 | If the macro section is the extended (for now called "GNU") type, | |
24573 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24574 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24575 | |
d521ce57 TT |
24576 | static const gdb_byte * |
24577 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24578 | bfd *abfd, |
d521ce57 | 24579 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24580 | unsigned int *offset_size, |
24581 | int section_is_gnu) | |
24582 | { | |
24583 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24584 | |
cf2c3c16 TT |
24585 | if (section_is_gnu) |
24586 | { | |
24587 | unsigned int version, flags; | |
757a13d0 | 24588 | |
cf2c3c16 | 24589 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24590 | if (version != 4 && version != 5) |
cf2c3c16 TT |
24591 | { |
24592 | complaint (&symfile_complaints, | |
24593 | _("unrecognized version `%d' in .debug_macro section"), | |
24594 | version); | |
24595 | return NULL; | |
24596 | } | |
24597 | mac_ptr += 2; | |
757a13d0 | 24598 | |
cf2c3c16 TT |
24599 | flags = read_1_byte (abfd, mac_ptr); |
24600 | ++mac_ptr; | |
24601 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24602 | |
cf2c3c16 TT |
24603 | if ((flags & 2) != 0) |
24604 | /* We don't need the line table offset. */ | |
24605 | mac_ptr += *offset_size; | |
757a13d0 | 24606 | |
cf2c3c16 TT |
24607 | /* Vendor opcode descriptions. */ |
24608 | if ((flags & 4) != 0) | |
24609 | { | |
24610 | unsigned int i, count; | |
757a13d0 | 24611 | |
cf2c3c16 TT |
24612 | count = read_1_byte (abfd, mac_ptr); |
24613 | ++mac_ptr; | |
24614 | for (i = 0; i < count; ++i) | |
24615 | { | |
24616 | unsigned int opcode, bytes_read; | |
24617 | unsigned long arg; | |
24618 | ||
24619 | opcode = read_1_byte (abfd, mac_ptr); | |
24620 | ++mac_ptr; | |
24621 | opcode_definitions[opcode] = mac_ptr; | |
24622 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24623 | mac_ptr += bytes_read; | |
24624 | mac_ptr += arg; | |
24625 | } | |
757a13d0 | 24626 | } |
cf2c3c16 | 24627 | } |
757a13d0 | 24628 | |
cf2c3c16 TT |
24629 | return mac_ptr; |
24630 | } | |
757a13d0 | 24631 | |
cf2c3c16 | 24632 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24633 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24634 | |
24635 | static void | |
ed2dc618 SM |
24636 | dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile, |
24637 | bfd *abfd, | |
d521ce57 | 24638 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24639 | struct macro_source_file *current_file, |
43f3e411 | 24640 | struct line_header *lh, |
cf2c3c16 | 24641 | struct dwarf2_section_info *section, |
36586728 | 24642 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24643 | unsigned int offset_size, |
8fc3fc34 | 24644 | htab_t include_hash) |
cf2c3c16 | 24645 | { |
4d663531 | 24646 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24647 | enum dwarf_macro_record_type macinfo_type; |
24648 | int at_commandline; | |
d521ce57 | 24649 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24650 | |
cf2c3c16 TT |
24651 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24652 | &offset_size, section_is_gnu); | |
24653 | if (mac_ptr == NULL) | |
24654 | { | |
24655 | /* We already issued a complaint. */ | |
24656 | return; | |
24657 | } | |
757a13d0 JK |
24658 | |
24659 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24660 | GDB is still reading the definitions from command line. First | |
24661 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24662 | to create CURRENT_FILE for the main source holding also the command line | |
24663 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24664 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24665 | ||
24666 | at_commandline = 1; | |
24667 | ||
24668 | do | |
24669 | { | |
24670 | /* Do we at least have room for a macinfo type byte? */ | |
24671 | if (mac_ptr >= mac_end) | |
24672 | { | |
f664829e | 24673 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24674 | break; |
24675 | } | |
24676 | ||
aead7601 | 24677 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24678 | mac_ptr++; |
24679 | ||
cf2c3c16 TT |
24680 | /* Note that we rely on the fact that the corresponding GNU and |
24681 | DWARF constants are the same. */ | |
132448f8 SM |
24682 | DIAGNOSTIC_PUSH |
24683 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24684 | switch (macinfo_type) |
24685 | { | |
24686 | /* A zero macinfo type indicates the end of the macro | |
24687 | information. */ | |
24688 | case 0: | |
24689 | break; | |
2e276125 | 24690 | |
0af92d60 JK |
24691 | case DW_MACRO_define: |
24692 | case DW_MACRO_undef: | |
24693 | case DW_MACRO_define_strp: | |
24694 | case DW_MACRO_undef_strp: | |
24695 | case DW_MACRO_define_sup: | |
24696 | case DW_MACRO_undef_sup: | |
2e276125 | 24697 | { |
891d2f0b | 24698 | unsigned int bytes_read; |
2e276125 | 24699 | int line; |
d521ce57 | 24700 | const char *body; |
cf2c3c16 | 24701 | int is_define; |
2e276125 | 24702 | |
cf2c3c16 TT |
24703 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24704 | mac_ptr += bytes_read; | |
24705 | ||
0af92d60 JK |
24706 | if (macinfo_type == DW_MACRO_define |
24707 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24708 | { |
24709 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24710 | mac_ptr += bytes_read; | |
24711 | } | |
24712 | else | |
24713 | { | |
24714 | LONGEST str_offset; | |
24715 | ||
24716 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24717 | mac_ptr += offset_size; | |
2e276125 | 24718 | |
0af92d60 JK |
24719 | if (macinfo_type == DW_MACRO_define_sup |
24720 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24721 | || section_is_dwz) |
36586728 | 24722 | { |
ed2dc618 SM |
24723 | struct dwz_file *dwz |
24724 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24725 | |
ed2dc618 SM |
24726 | body = read_indirect_string_from_dwz (objfile, |
24727 | dwz, str_offset); | |
36586728 TT |
24728 | } |
24729 | else | |
ed2dc618 SM |
24730 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24731 | abfd, str_offset); | |
cf2c3c16 TT |
24732 | } |
24733 | ||
0af92d60 JK |
24734 | is_define = (macinfo_type == DW_MACRO_define |
24735 | || macinfo_type == DW_MACRO_define_strp | |
24736 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24737 | if (! current_file) |
757a13d0 JK |
24738 | { |
24739 | /* DWARF violation as no main source is present. */ | |
24740 | complaint (&symfile_complaints, | |
24741 | _("debug info with no main source gives macro %s " | |
24742 | "on line %d: %s"), | |
cf2c3c16 TT |
24743 | is_define ? _("definition") : _("undefinition"), |
24744 | line, body); | |
757a13d0 JK |
24745 | break; |
24746 | } | |
3e43a32a MS |
24747 | if ((line == 0 && !at_commandline) |
24748 | || (line != 0 && at_commandline)) | |
4d3c2250 | 24749 | complaint (&symfile_complaints, |
757a13d0 JK |
24750 | _("debug info gives %s macro %s with %s line %d: %s"), |
24751 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 24752 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24753 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24754 | ||
cf2c3c16 | 24755 | if (is_define) |
757a13d0 | 24756 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24757 | else |
24758 | { | |
0af92d60 JK |
24759 | gdb_assert (macinfo_type == DW_MACRO_undef |
24760 | || macinfo_type == DW_MACRO_undef_strp | |
24761 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24762 | macro_undef (current_file, line, body); |
24763 | } | |
2e276125 JB |
24764 | } |
24765 | break; | |
24766 | ||
0af92d60 | 24767 | case DW_MACRO_start_file: |
2e276125 | 24768 | { |
891d2f0b | 24769 | unsigned int bytes_read; |
2e276125 JB |
24770 | int line, file; |
24771 | ||
24772 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24773 | mac_ptr += bytes_read; | |
24774 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24775 | mac_ptr += bytes_read; | |
24776 | ||
3e43a32a MS |
24777 | if ((line == 0 && !at_commandline) |
24778 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
24779 | complaint (&symfile_complaints, |
24780 | _("debug info gives source %d included " | |
24781 | "from %s at %s line %d"), | |
24782 | file, at_commandline ? _("command-line") : _("file"), | |
24783 | line == 0 ? _("zero") : _("non-zero"), line); | |
24784 | ||
24785 | if (at_commandline) | |
24786 | { | |
0af92d60 | 24787 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24788 | pass one. */ |
757a13d0 JK |
24789 | at_commandline = 0; |
24790 | } | |
24791 | else | |
43f3e411 | 24792 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
24793 | } |
24794 | break; | |
24795 | ||
0af92d60 | 24796 | case DW_MACRO_end_file: |
2e276125 | 24797 | if (! current_file) |
4d3c2250 | 24798 | complaint (&symfile_complaints, |
3e43a32a MS |
24799 | _("macro debug info has an unmatched " |
24800 | "`close_file' directive")); | |
2e276125 JB |
24801 | else |
24802 | { | |
24803 | current_file = current_file->included_by; | |
24804 | if (! current_file) | |
24805 | { | |
cf2c3c16 | 24806 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24807 | |
24808 | /* GCC circa March 2002 doesn't produce the zero | |
24809 | type byte marking the end of the compilation | |
24810 | unit. Complain if it's not there, but exit no | |
24811 | matter what. */ | |
24812 | ||
24813 | /* Do we at least have room for a macinfo type byte? */ | |
24814 | if (mac_ptr >= mac_end) | |
24815 | { | |
f664829e | 24816 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24817 | return; |
24818 | } | |
24819 | ||
24820 | /* We don't increment mac_ptr here, so this is just | |
24821 | a look-ahead. */ | |
aead7601 SM |
24822 | next_type |
24823 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24824 | mac_ptr); | |
2e276125 | 24825 | if (next_type != 0) |
4d3c2250 | 24826 | complaint (&symfile_complaints, |
3e43a32a MS |
24827 | _("no terminating 0-type entry for " |
24828 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
24829 | |
24830 | return; | |
24831 | } | |
24832 | } | |
24833 | break; | |
24834 | ||
0af92d60 JK |
24835 | case DW_MACRO_import: |
24836 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24837 | { |
24838 | LONGEST offset; | |
8fc3fc34 | 24839 | void **slot; |
a036ba48 TT |
24840 | bfd *include_bfd = abfd; |
24841 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24842 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24843 | int is_dwz = section_is_dwz; |
d521ce57 | 24844 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24845 | |
24846 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24847 | mac_ptr += offset_size; | |
24848 | ||
0af92d60 | 24849 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24850 | { |
ed2dc618 | 24851 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24852 | |
4d663531 | 24853 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24854 | |
a036ba48 | 24855 | include_section = &dwz->macro; |
a32a8923 | 24856 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24857 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24858 | is_dwz = 1; | |
24859 | } | |
24860 | ||
24861 | new_mac_ptr = include_section->buffer + offset; | |
24862 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24863 | ||
8fc3fc34 TT |
24864 | if (*slot != NULL) |
24865 | { | |
24866 | /* This has actually happened; see | |
24867 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
24868 | complaint (&symfile_complaints, | |
0af92d60 | 24869 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24870 | ".debug_macro section")); |
24871 | } | |
24872 | else | |
24873 | { | |
d521ce57 | 24874 | *slot = (void *) new_mac_ptr; |
36586728 | 24875 | |
ed2dc618 SM |
24876 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24877 | include_bfd, new_mac_ptr, | |
43f3e411 | 24878 | include_mac_end, current_file, lh, |
36586728 | 24879 | section, section_is_gnu, is_dwz, |
4d663531 | 24880 | offset_size, include_hash); |
8fc3fc34 | 24881 | |
d521ce57 | 24882 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24883 | } |
cf2c3c16 TT |
24884 | } |
24885 | break; | |
24886 | ||
2e276125 | 24887 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24888 | if (!section_is_gnu) |
24889 | { | |
24890 | unsigned int bytes_read; | |
2e276125 | 24891 | |
ac298888 TT |
24892 | /* This reads the constant, but since we don't recognize |
24893 | any vendor extensions, we ignore it. */ | |
24894 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24895 | mac_ptr += bytes_read; |
24896 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24897 | mac_ptr += bytes_read; | |
2e276125 | 24898 | |
cf2c3c16 TT |
24899 | /* We don't recognize any vendor extensions. */ |
24900 | break; | |
24901 | } | |
24902 | /* FALLTHROUGH */ | |
24903 | ||
24904 | default: | |
24905 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24906 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24907 | section); |
24908 | if (mac_ptr == NULL) | |
24909 | return; | |
24910 | break; | |
2e276125 | 24911 | } |
132448f8 | 24912 | DIAGNOSTIC_POP |
757a13d0 | 24913 | } while (macinfo_type != 0); |
2e276125 | 24914 | } |
8e19ed76 | 24915 | |
cf2c3c16 | 24916 | static void |
09262596 | 24917 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24918 | int section_is_gnu) |
cf2c3c16 | 24919 | { |
518817b3 SM |
24920 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24921 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24922 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24923 | struct line_header *lh = cu->line_header; |
24924 | bfd *abfd; | |
d521ce57 | 24925 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24926 | struct macro_source_file *current_file = 0; |
24927 | enum dwarf_macro_record_type macinfo_type; | |
24928 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24929 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24930 | void **slot; |
09262596 DE |
24931 | struct dwarf2_section_info *section; |
24932 | const char *section_name; | |
24933 | ||
24934 | if (cu->dwo_unit != NULL) | |
24935 | { | |
24936 | if (section_is_gnu) | |
24937 | { | |
24938 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24939 | section_name = ".debug_macro.dwo"; | |
24940 | } | |
24941 | else | |
24942 | { | |
24943 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24944 | section_name = ".debug_macinfo.dwo"; | |
24945 | } | |
24946 | } | |
24947 | else | |
24948 | { | |
24949 | if (section_is_gnu) | |
24950 | { | |
24951 | section = &dwarf2_per_objfile->macro; | |
24952 | section_name = ".debug_macro"; | |
24953 | } | |
24954 | else | |
24955 | { | |
24956 | section = &dwarf2_per_objfile->macinfo; | |
24957 | section_name = ".debug_macinfo"; | |
24958 | } | |
24959 | } | |
cf2c3c16 | 24960 | |
bb5ed363 | 24961 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24962 | if (section->buffer == NULL) |
24963 | { | |
fceca515 | 24964 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
24965 | return; |
24966 | } | |
a32a8923 | 24967 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24968 | |
24969 | /* First pass: Find the name of the base filename. | |
24970 | This filename is needed in order to process all macros whose definition | |
24971 | (or undefinition) comes from the command line. These macros are defined | |
24972 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24973 | associated to the base file. | |
24974 | ||
24975 | To determine the base file name, we scan the macro definitions until we | |
24976 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24977 | CURRENT_FILE accordingly so that any macro definition found before the | |
24978 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24979 | ||
24980 | mac_ptr = section->buffer + offset; | |
24981 | mac_end = section->buffer + section->size; | |
24982 | ||
24983 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24984 | &offset_size, section_is_gnu); | |
24985 | if (mac_ptr == NULL) | |
24986 | { | |
24987 | /* We already issued a complaint. */ | |
24988 | return; | |
24989 | } | |
24990 | ||
24991 | do | |
24992 | { | |
24993 | /* Do we at least have room for a macinfo type byte? */ | |
24994 | if (mac_ptr >= mac_end) | |
24995 | { | |
24996 | /* Complaint is printed during the second pass as GDB will probably | |
24997 | stop the first pass earlier upon finding | |
24998 | DW_MACINFO_start_file. */ | |
24999 | break; | |
25000 | } | |
25001 | ||
aead7601 | 25002 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
25003 | mac_ptr++; |
25004 | ||
25005 | /* Note that we rely on the fact that the corresponding GNU and | |
25006 | DWARF constants are the same. */ | |
132448f8 SM |
25007 | DIAGNOSTIC_PUSH |
25008 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
25009 | switch (macinfo_type) |
25010 | { | |
25011 | /* A zero macinfo type indicates the end of the macro | |
25012 | information. */ | |
25013 | case 0: | |
25014 | break; | |
25015 | ||
0af92d60 JK |
25016 | case DW_MACRO_define: |
25017 | case DW_MACRO_undef: | |
cf2c3c16 TT |
25018 | /* Only skip the data by MAC_PTR. */ |
25019 | { | |
25020 | unsigned int bytes_read; | |
25021 | ||
25022 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25023 | mac_ptr += bytes_read; | |
25024 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25025 | mac_ptr += bytes_read; | |
25026 | } | |
25027 | break; | |
25028 | ||
0af92d60 | 25029 | case DW_MACRO_start_file: |
cf2c3c16 TT |
25030 | { |
25031 | unsigned int bytes_read; | |
25032 | int line, file; | |
25033 | ||
25034 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25035 | mac_ptr += bytes_read; | |
25036 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25037 | mac_ptr += bytes_read; | |
25038 | ||
43f3e411 | 25039 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
25040 | } |
25041 | break; | |
25042 | ||
0af92d60 | 25043 | case DW_MACRO_end_file: |
cf2c3c16 TT |
25044 | /* No data to skip by MAC_PTR. */ |
25045 | break; | |
25046 | ||
0af92d60 JK |
25047 | case DW_MACRO_define_strp: |
25048 | case DW_MACRO_undef_strp: | |
25049 | case DW_MACRO_define_sup: | |
25050 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
25051 | { |
25052 | unsigned int bytes_read; | |
25053 | ||
25054 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25055 | mac_ptr += bytes_read; | |
25056 | mac_ptr += offset_size; | |
25057 | } | |
25058 | break; | |
25059 | ||
0af92d60 JK |
25060 | case DW_MACRO_import: |
25061 | case DW_MACRO_import_sup: | |
cf2c3c16 | 25062 | /* Note that, according to the spec, a transparent include |
0af92d60 | 25063 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
25064 | skip this opcode. */ |
25065 | mac_ptr += offset_size; | |
25066 | break; | |
25067 | ||
25068 | case DW_MACINFO_vendor_ext: | |
25069 | /* Only skip the data by MAC_PTR. */ | |
25070 | if (!section_is_gnu) | |
25071 | { | |
25072 | unsigned int bytes_read; | |
25073 | ||
25074 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25075 | mac_ptr += bytes_read; | |
25076 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25077 | mac_ptr += bytes_read; | |
25078 | } | |
25079 | /* FALLTHROUGH */ | |
25080 | ||
25081 | default: | |
25082 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25083 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25084 | section); |
25085 | if (mac_ptr == NULL) | |
25086 | return; | |
25087 | break; | |
25088 | } | |
132448f8 | 25089 | DIAGNOSTIC_POP |
cf2c3c16 TT |
25090 | } while (macinfo_type != 0 && current_file == NULL); |
25091 | ||
25092 | /* Second pass: Process all entries. | |
25093 | ||
25094 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
25095 | command-line macro definitions/undefinitions. This flag is unset when we | |
25096 | reach the first DW_MACINFO_start_file entry. */ | |
25097 | ||
fc4007c9 TT |
25098 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
25099 | htab_eq_pointer, | |
25100 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 25101 | mac_ptr = section->buffer + offset; |
fc4007c9 | 25102 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 25103 | *slot = (void *) mac_ptr; |
ed2dc618 SM |
25104 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
25105 | abfd, mac_ptr, mac_end, | |
43f3e411 | 25106 | current_file, lh, section, |
fc4007c9 TT |
25107 | section_is_gnu, 0, offset_size, |
25108 | include_hash.get ()); | |
cf2c3c16 TT |
25109 | } |
25110 | ||
8e19ed76 | 25111 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 25112 | if so return true else false. */ |
380bca97 | 25113 | |
8e19ed76 | 25114 | static int |
6e5a29e1 | 25115 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
25116 | { |
25117 | return (attr == NULL ? 0 : | |
25118 | attr->form == DW_FORM_block1 | |
25119 | || attr->form == DW_FORM_block2 | |
25120 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
25121 | || attr->form == DW_FORM_block |
25122 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 25123 | } |
4c2df51b | 25124 | |
c6a0999f JB |
25125 | /* Return non-zero if ATTR's value is a section offset --- classes |
25126 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
25127 | You may use DW_UNSND (attr) to retrieve such offsets. | |
25128 | ||
25129 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
25130 | may have a value that belongs to more than one of these classes; it | |
25131 | would be ambiguous if we did, because we use the same forms for all | |
25132 | of them. */ | |
380bca97 | 25133 | |
3690dd37 | 25134 | static int |
6e5a29e1 | 25135 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
25136 | { |
25137 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
25138 | || attr->form == DW_FORM_data8 |
25139 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
25140 | } |
25141 | ||
3690dd37 JB |
25142 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
25143 | zero otherwise. When this function returns true, you can apply | |
25144 | dwarf2_get_attr_constant_value to it. | |
25145 | ||
25146 | However, note that for some attributes you must check | |
25147 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
25148 | and DW_FORM_data8 are members of both the constant class, and of | |
25149 | the classes that contain offsets into other debug sections | |
25150 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
25151 | that, if an attribute's can be either a constant or one of the | |
25152 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
25153 | taken as section offsets, not constants. |
25154 | ||
25155 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
25156 | cannot handle that. */ | |
380bca97 | 25157 | |
3690dd37 | 25158 | static int |
6e5a29e1 | 25159 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
25160 | { |
25161 | switch (attr->form) | |
25162 | { | |
25163 | case DW_FORM_sdata: | |
25164 | case DW_FORM_udata: | |
25165 | case DW_FORM_data1: | |
25166 | case DW_FORM_data2: | |
25167 | case DW_FORM_data4: | |
25168 | case DW_FORM_data8: | |
663c44ac | 25169 | case DW_FORM_implicit_const: |
3690dd37 JB |
25170 | return 1; |
25171 | default: | |
25172 | return 0; | |
25173 | } | |
25174 | } | |
25175 | ||
7771576e SA |
25176 | |
25177 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
25178 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
25179 | ||
25180 | static int | |
6e5a29e1 | 25181 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
25182 | { |
25183 | switch (attr->form) | |
25184 | { | |
25185 | case DW_FORM_ref_addr: | |
25186 | case DW_FORM_ref1: | |
25187 | case DW_FORM_ref2: | |
25188 | case DW_FORM_ref4: | |
25189 | case DW_FORM_ref8: | |
25190 | case DW_FORM_ref_udata: | |
25191 | case DW_FORM_GNU_ref_alt: | |
25192 | return 1; | |
25193 | default: | |
25194 | return 0; | |
25195 | } | |
25196 | } | |
25197 | ||
3019eac3 DE |
25198 | /* Return the .debug_loc section to use for CU. |
25199 | For DWO files use .debug_loc.dwo. */ | |
25200 | ||
25201 | static struct dwarf2_section_info * | |
25202 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
25203 | { | |
518817b3 SM |
25204 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25205 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 25206 | |
3019eac3 | 25207 | if (cu->dwo_unit) |
43988095 JK |
25208 | { |
25209 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
25210 | ||
25211 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
25212 | } | |
25213 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
25214 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
25215 | } |
25216 | ||
8cf6f0b1 TT |
25217 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
25218 | ||
25219 | static void | |
25220 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
25221 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 25222 | const struct attribute *attr) |
8cf6f0b1 | 25223 | { |
518817b3 SM |
25224 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25225 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
25226 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
25227 | ||
25228 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
25229 | |
25230 | baton->per_cu = cu->per_cu; | |
25231 | gdb_assert (baton->per_cu); | |
25232 | /* We don't know how long the location list is, but make sure we | |
25233 | don't run off the edge of the section. */ | |
3019eac3 DE |
25234 | baton->size = section->size - DW_UNSND (attr); |
25235 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 25236 | baton->base_address = cu->base_address; |
f664829e | 25237 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
25238 | } |
25239 | ||
4c2df51b | 25240 | static void |
ff39bb5e | 25241 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 25242 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 25243 | { |
518817b3 SM |
25244 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25245 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25246 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 25247 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 25248 | |
3690dd37 | 25249 | if (attr_form_is_section_offset (attr) |
3019eac3 | 25250 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
25251 | the section. If so, fall through to the complaint in the |
25252 | other branch. */ | |
3019eac3 | 25253 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 25254 | { |
0d53c4c4 | 25255 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 25256 | |
8d749320 | 25257 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 25258 | |
8cf6f0b1 | 25259 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 25260 | |
d00adf39 | 25261 | if (cu->base_known == 0) |
0d53c4c4 | 25262 | complaint (&symfile_complaints, |
3e43a32a MS |
25263 | _("Location list used without " |
25264 | "specifying the CU base address.")); | |
4c2df51b | 25265 | |
f1e6e072 TT |
25266 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25267 | ? dwarf2_loclist_block_index | |
25268 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
25269 | SYMBOL_LOCATION_BATON (sym) = baton; |
25270 | } | |
25271 | else | |
25272 | { | |
25273 | struct dwarf2_locexpr_baton *baton; | |
25274 | ||
8d749320 | 25275 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
25276 | baton->per_cu = cu->per_cu; |
25277 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
25278 | |
25279 | if (attr_form_is_block (attr)) | |
25280 | { | |
25281 | /* Note that we're just copying the block's data pointer | |
25282 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
25283 | info_buffer for SYM's objfile; right now we never release |
25284 | that buffer, but when we do clean up properly this may | |
25285 | need to change. */ | |
0d53c4c4 DJ |
25286 | baton->size = DW_BLOCK (attr)->size; |
25287 | baton->data = DW_BLOCK (attr)->data; | |
25288 | } | |
25289 | else | |
25290 | { | |
25291 | dwarf2_invalid_attrib_class_complaint ("location description", | |
25292 | SYMBOL_NATURAL_NAME (sym)); | |
25293 | baton->size = 0; | |
0d53c4c4 | 25294 | } |
6e70227d | 25295 | |
f1e6e072 TT |
25296 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25297 | ? dwarf2_locexpr_block_index | |
25298 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
25299 | SYMBOL_LOCATION_BATON (sym) = baton; |
25300 | } | |
4c2df51b | 25301 | } |
6502dd73 | 25302 | |
9aa1f1e3 TT |
25303 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
25304 | came from a separate debuginfo file, then the master objfile is | |
25305 | returned. */ | |
ae0d2f24 UW |
25306 | |
25307 | struct objfile * | |
25308 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25309 | { | |
e3b94546 | 25310 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25311 | |
25312 | /* Return the master objfile, so that we can report and look up the | |
25313 | correct file containing this variable. */ | |
25314 | if (objfile->separate_debug_objfile_backlink) | |
25315 | objfile = objfile->separate_debug_objfile_backlink; | |
25316 | ||
25317 | return objfile; | |
25318 | } | |
25319 | ||
96408a79 SA |
25320 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25321 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25322 | CU_HEADERP first. */ | |
25323 | ||
25324 | static const struct comp_unit_head * | |
25325 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25326 | struct dwarf2_per_cu_data *per_cu) | |
25327 | { | |
d521ce57 | 25328 | const gdb_byte *info_ptr; |
96408a79 SA |
25329 | |
25330 | if (per_cu->cu) | |
25331 | return &per_cu->cu->header; | |
25332 | ||
9c541725 | 25333 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25334 | |
25335 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25336 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25337 | rcuh_kind::COMPILE); | |
96408a79 SA |
25338 | |
25339 | return cu_headerp; | |
25340 | } | |
25341 | ||
ae0d2f24 UW |
25342 | /* Return the address size given in the compilation unit header for CU. */ |
25343 | ||
98714339 | 25344 | int |
ae0d2f24 UW |
25345 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25346 | { | |
96408a79 SA |
25347 | struct comp_unit_head cu_header_local; |
25348 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25349 | |
96408a79 SA |
25350 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25351 | ||
25352 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25353 | } |
25354 | ||
9eae7c52 TT |
25355 | /* Return the offset size given in the compilation unit header for CU. */ |
25356 | ||
25357 | int | |
25358 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25359 | { | |
96408a79 SA |
25360 | struct comp_unit_head cu_header_local; |
25361 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25362 | |
96408a79 SA |
25363 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25364 | ||
25365 | return cu_headerp->offset_size; | |
25366 | } | |
25367 | ||
25368 | /* See its dwarf2loc.h declaration. */ | |
25369 | ||
25370 | int | |
25371 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25372 | { | |
25373 | struct comp_unit_head cu_header_local; | |
25374 | const struct comp_unit_head *cu_headerp; | |
25375 | ||
25376 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25377 | ||
25378 | if (cu_headerp->version == 2) | |
25379 | return cu_headerp->addr_size; | |
25380 | else | |
25381 | return cu_headerp->offset_size; | |
181cebd4 JK |
25382 | } |
25383 | ||
9aa1f1e3 TT |
25384 | /* Return the text offset of the CU. The returned offset comes from |
25385 | this CU's objfile. If this objfile came from a separate debuginfo | |
25386 | file, then the offset may be different from the corresponding | |
25387 | offset in the parent objfile. */ | |
25388 | ||
25389 | CORE_ADDR | |
25390 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25391 | { | |
e3b94546 | 25392 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25393 | |
25394 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25395 | } | |
25396 | ||
43988095 JK |
25397 | /* Return DWARF version number of PER_CU. */ |
25398 | ||
25399 | short | |
25400 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25401 | { | |
25402 | return per_cu->dwarf_version; | |
25403 | } | |
25404 | ||
348e048f DE |
25405 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25406 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25407 | |
25408 | static struct dwarf2_per_cu_data * | |
9c541725 | 25409 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25410 | unsigned int offset_in_dwz, |
ed2dc618 | 25411 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25412 | { |
25413 | struct dwarf2_per_cu_data *this_cu; | |
25414 | int low, high; | |
36586728 | 25415 | const sect_offset *cu_off; |
ae038cb0 | 25416 | |
ae038cb0 DJ |
25417 | low = 0; |
25418 | high = dwarf2_per_objfile->n_comp_units - 1; | |
25419 | while (high > low) | |
25420 | { | |
36586728 | 25421 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25422 | int mid = low + (high - low) / 2; |
9a619af0 | 25423 | |
36586728 | 25424 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 25425 | cu_off = &mid_cu->sect_off; |
36586728 | 25426 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 25427 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
25428 | high = mid; |
25429 | else | |
25430 | low = mid + 1; | |
25431 | } | |
25432 | gdb_assert (low == high); | |
36586728 | 25433 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
25434 | cu_off = &this_cu->sect_off; |
25435 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 25436 | { |
36586728 | 25437 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25438 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25439 | "offset %s [in module %s]"), |
25440 | sect_offset_str (sect_off), | |
ed2dc618 | 25441 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25442 | |
9c541725 PA |
25443 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25444 | <= sect_off); | |
ae038cb0 DJ |
25445 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25446 | } | |
25447 | else | |
25448 | { | |
25449 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
25450 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9c541725 | 25451 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25452 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25453 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25454 | return this_cu; |
25455 | } | |
25456 | } | |
25457 | ||
23745b47 | 25458 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25459 | |
fcd3b13d SM |
25460 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25461 | : per_cu (per_cu_), | |
25462 | mark (0), | |
25463 | has_loclist (0), | |
25464 | checked_producer (0), | |
25465 | producer_is_gxx_lt_4_6 (0), | |
25466 | producer_is_gcc_lt_4_3 (0), | |
25467 | producer_is_icc_lt_14 (0), | |
25468 | processing_has_namespace_info (0) | |
93311388 | 25469 | { |
fcd3b13d SM |
25470 | per_cu->cu = this; |
25471 | } | |
25472 | ||
25473 | /* Destroy a dwarf2_cu. */ | |
25474 | ||
25475 | dwarf2_cu::~dwarf2_cu () | |
25476 | { | |
25477 | per_cu->cu = NULL; | |
9816fde3 JK |
25478 | } |
25479 | ||
25480 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25481 | ||
25482 | static void | |
95554aad TT |
25483 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25484 | enum language pretend_language) | |
9816fde3 JK |
25485 | { |
25486 | struct attribute *attr; | |
25487 | ||
25488 | /* Set the language we're debugging. */ | |
25489 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25490 | if (attr) | |
25491 | set_cu_language (DW_UNSND (attr), cu); | |
25492 | else | |
9cded63f | 25493 | { |
95554aad | 25494 | cu->language = pretend_language; |
9cded63f TT |
25495 | cu->language_defn = language_def (cu->language); |
25496 | } | |
dee91e82 | 25497 | |
7d45c7c3 | 25498 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25499 | } |
25500 | ||
ae038cb0 DJ |
25501 | /* Free all cached compilation units. */ |
25502 | ||
25503 | static void | |
25504 | free_cached_comp_units (void *data) | |
25505 | { | |
ed2dc618 SM |
25506 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25507 | = (struct dwarf2_per_objfile *) data; | |
25508 | ||
330cdd98 | 25509 | dwarf2_per_objfile->free_cached_comp_units (); |
ae038cb0 DJ |
25510 | } |
25511 | ||
25512 | /* Increase the age counter on each cached compilation unit, and free | |
25513 | any that are too old. */ | |
25514 | ||
25515 | static void | |
ed2dc618 | 25516 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25517 | { |
25518 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25519 | ||
25520 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25521 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25522 | while (per_cu != NULL) | |
25523 | { | |
25524 | per_cu->cu->last_used ++; | |
b4f54984 | 25525 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25526 | dwarf2_mark (per_cu->cu); |
25527 | per_cu = per_cu->cu->read_in_chain; | |
25528 | } | |
25529 | ||
25530 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25531 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25532 | while (per_cu != NULL) | |
25533 | { | |
25534 | struct dwarf2_per_cu_data *next_cu; | |
25535 | ||
25536 | next_cu = per_cu->cu->read_in_chain; | |
25537 | ||
25538 | if (!per_cu->cu->mark) | |
25539 | { | |
fcd3b13d | 25540 | delete per_cu->cu; |
ae038cb0 DJ |
25541 | *last_chain = next_cu; |
25542 | } | |
25543 | else | |
25544 | last_chain = &per_cu->cu->read_in_chain; | |
25545 | ||
25546 | per_cu = next_cu; | |
25547 | } | |
25548 | } | |
25549 | ||
25550 | /* Remove a single compilation unit from the cache. */ | |
25551 | ||
25552 | static void | |
dee91e82 | 25553 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25554 | { |
25555 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25556 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25557 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25558 | |
25559 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25560 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25561 | while (per_cu != NULL) | |
25562 | { | |
25563 | struct dwarf2_per_cu_data *next_cu; | |
25564 | ||
25565 | next_cu = per_cu->cu->read_in_chain; | |
25566 | ||
dee91e82 | 25567 | if (per_cu == target_per_cu) |
ae038cb0 | 25568 | { |
fcd3b13d | 25569 | delete per_cu->cu; |
dee91e82 | 25570 | per_cu->cu = NULL; |
ae038cb0 DJ |
25571 | *last_chain = next_cu; |
25572 | break; | |
25573 | } | |
25574 | else | |
25575 | last_chain = &per_cu->cu->read_in_chain; | |
25576 | ||
25577 | per_cu = next_cu; | |
25578 | } | |
25579 | } | |
25580 | ||
fe3e1990 DJ |
25581 | /* Release all extra memory associated with OBJFILE. */ |
25582 | ||
25583 | void | |
25584 | dwarf2_free_objfile (struct objfile *objfile) | |
25585 | { | |
ed2dc618 SM |
25586 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25587 | = get_dwarf2_per_objfile (objfile); | |
fe3e1990 | 25588 | |
fd90ace4 | 25589 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25590 | } |
25591 | ||
dee91e82 DE |
25592 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25593 | We store these in a hash table separate from the DIEs, and preserve them | |
25594 | when the DIEs are flushed out of cache. | |
25595 | ||
25596 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25597 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25598 | or the type may come from a DWO file. Furthermore, while it's more logical |
25599 | to use per_cu->section+offset, with Fission the section with the data is in | |
25600 | the DWO file but we don't know that section at the point we need it. | |
25601 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25602 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25603 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25604 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25605 | |
dee91e82 | 25606 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25607 | { |
dee91e82 | 25608 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25609 | sect_offset sect_off; |
1c379e20 DJ |
25610 | struct type *type; |
25611 | }; | |
25612 | ||
dee91e82 | 25613 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25614 | |
25615 | static hashval_t | |
dee91e82 | 25616 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25617 | { |
9a3c8263 SM |
25618 | const struct dwarf2_per_cu_offset_and_type *ofs |
25619 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25620 | |
9c541725 | 25621 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25622 | } |
25623 | ||
dee91e82 | 25624 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25625 | |
25626 | static int | |
dee91e82 | 25627 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25628 | { |
9a3c8263 SM |
25629 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25630 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25631 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25632 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25633 | |
dee91e82 | 25634 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25635 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25636 | } |
25637 | ||
25638 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25639 | table if necessary. For convenience, return TYPE. |
25640 | ||
25641 | The DIEs reading must have careful ordering to: | |
25642 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25643 | reading current DIE. | |
25644 | * Not trying to dereference contents of still incompletely read in types | |
25645 | while reading in other DIEs. | |
25646 | * Enable referencing still incompletely read in types just by a pointer to | |
25647 | the type without accessing its fields. | |
25648 | ||
25649 | Therefore caller should follow these rules: | |
25650 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25651 | before building the type and calling set_die_type. | |
e71ec853 | 25652 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25653 | possible before fetching more types to complete the current type. |
25654 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25655 | |
f792889a | 25656 | static struct type * |
1c379e20 DJ |
25657 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25658 | { | |
518817b3 SM |
25659 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25660 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25661 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25662 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25663 | struct attribute *attr; |
25664 | struct dynamic_prop prop; | |
1c379e20 | 25665 | |
b4ba55a1 JB |
25666 | /* For Ada types, make sure that the gnat-specific data is always |
25667 | initialized (if not already set). There are a few types where | |
25668 | we should not be doing so, because the type-specific area is | |
25669 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25670 | where the type-specific area is used to store the floatformat). | |
25671 | But this is not a problem, because the gnat-specific information | |
25672 | is actually not needed for these types. */ | |
25673 | if (need_gnat_info (cu) | |
25674 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25675 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25676 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25677 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25678 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25679 | && !HAVE_GNAT_AUX_INFO (type)) |
25680 | INIT_GNAT_SPECIFIC (type); | |
25681 | ||
3f2f83dd KB |
25682 | /* Read DW_AT_allocated and set in type. */ |
25683 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25684 | if (attr_form_is_block (attr)) | |
25685 | { | |
25686 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25687 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25688 | } |
25689 | else if (attr != NULL) | |
25690 | { | |
25691 | complaint (&symfile_complaints, | |
9d8780f0 | 25692 | _("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25693 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25694 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25695 | } |
25696 | ||
25697 | /* Read DW_AT_associated and set in type. */ | |
25698 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25699 | if (attr_form_is_block (attr)) | |
25700 | { | |
25701 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25702 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25703 | } |
25704 | else if (attr != NULL) | |
25705 | { | |
25706 | complaint (&symfile_complaints, | |
9d8780f0 | 25707 | _("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25708 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25709 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25710 | } |
25711 | ||
3cdcd0ce JB |
25712 | /* Read DW_AT_data_location and set in type. */ |
25713 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25714 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25715 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25716 | |
dee91e82 | 25717 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25718 | { |
dee91e82 DE |
25719 | dwarf2_per_objfile->die_type_hash = |
25720 | htab_create_alloc_ex (127, | |
25721 | per_cu_offset_and_type_hash, | |
25722 | per_cu_offset_and_type_eq, | |
25723 | NULL, | |
25724 | &objfile->objfile_obstack, | |
25725 | hashtab_obstack_allocate, | |
25726 | dummy_obstack_deallocate); | |
f792889a | 25727 | } |
1c379e20 | 25728 | |
dee91e82 | 25729 | ofs.per_cu = cu->per_cu; |
9c541725 | 25730 | ofs.sect_off = die->sect_off; |
1c379e20 | 25731 | ofs.type = type; |
dee91e82 DE |
25732 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25733 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
25734 | if (*slot) |
25735 | complaint (&symfile_complaints, | |
9d8780f0 SM |
25736 | _("A problem internal to GDB: DIE %s has type already set"), |
25737 | sect_offset_str (die->sect_off)); | |
8d749320 SM |
25738 | *slot = XOBNEW (&objfile->objfile_obstack, |
25739 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25740 | **slot = ofs; |
f792889a | 25741 | return type; |
1c379e20 DJ |
25742 | } |
25743 | ||
9c541725 | 25744 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25745 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25746 | |
25747 | static struct type * | |
9c541725 | 25748 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25749 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25750 | { |
dee91e82 | 25751 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25752 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25753 | |
dee91e82 | 25754 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25755 | return NULL; |
1c379e20 | 25756 | |
dee91e82 | 25757 | ofs.per_cu = per_cu; |
9c541725 | 25758 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25759 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25760 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25761 | if (slot) |
25762 | return slot->type; | |
25763 | else | |
25764 | return NULL; | |
25765 | } | |
25766 | ||
02142a6c | 25767 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25768 | or return NULL if DIE does not have a saved type. */ |
25769 | ||
25770 | static struct type * | |
25771 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25772 | { | |
9c541725 | 25773 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25774 | } |
25775 | ||
10b3939b DJ |
25776 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25777 | ||
25778 | static void | |
25779 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25780 | struct dwarf2_per_cu_data *ref_per_cu) | |
25781 | { | |
25782 | void **slot; | |
25783 | ||
25784 | if (cu->dependencies == NULL) | |
25785 | cu->dependencies | |
25786 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25787 | NULL, &cu->comp_unit_obstack, | |
25788 | hashtab_obstack_allocate, | |
25789 | dummy_obstack_deallocate); | |
25790 | ||
25791 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25792 | if (*slot == NULL) | |
25793 | *slot = ref_per_cu; | |
25794 | } | |
1c379e20 | 25795 | |
f504f079 DE |
25796 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25797 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25798 | cache that we must keep because we are keeping CU. */ |
25799 | ||
10b3939b DJ |
25800 | static int |
25801 | dwarf2_mark_helper (void **slot, void *data) | |
25802 | { | |
25803 | struct dwarf2_per_cu_data *per_cu; | |
25804 | ||
25805 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25806 | |
25807 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25808 | reading of the chain. As such dependencies remain valid it is not much | |
25809 | useful to track and undo them during QUIT cleanups. */ | |
25810 | if (per_cu->cu == NULL) | |
25811 | return 1; | |
25812 | ||
10b3939b DJ |
25813 | if (per_cu->cu->mark) |
25814 | return 1; | |
25815 | per_cu->cu->mark = 1; | |
25816 | ||
25817 | if (per_cu->cu->dependencies != NULL) | |
25818 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25819 | ||
25820 | return 1; | |
25821 | } | |
25822 | ||
f504f079 DE |
25823 | /* Set the mark field in CU and in every other compilation unit in the |
25824 | cache that we must keep because we are keeping CU. */ | |
25825 | ||
ae038cb0 DJ |
25826 | static void |
25827 | dwarf2_mark (struct dwarf2_cu *cu) | |
25828 | { | |
25829 | if (cu->mark) | |
25830 | return; | |
25831 | cu->mark = 1; | |
10b3939b DJ |
25832 | if (cu->dependencies != NULL) |
25833 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25834 | } |
25835 | ||
25836 | static void | |
25837 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25838 | { | |
25839 | while (per_cu) | |
25840 | { | |
25841 | per_cu->cu->mark = 0; | |
25842 | per_cu = per_cu->cu->read_in_chain; | |
25843 | } | |
72bf9492 DJ |
25844 | } |
25845 | ||
72bf9492 DJ |
25846 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25847 | is its offset in .debug_info for this objfile. */ | |
25848 | ||
25849 | static hashval_t | |
25850 | partial_die_hash (const void *item) | |
25851 | { | |
9a3c8263 SM |
25852 | const struct partial_die_info *part_die |
25853 | = (const struct partial_die_info *) item; | |
9a619af0 | 25854 | |
9c541725 | 25855 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25856 | } |
25857 | ||
25858 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25859 | are equal if they have the same offset. */ | |
25860 | ||
25861 | static int | |
25862 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25863 | { | |
9a3c8263 SM |
25864 | const struct partial_die_info *part_die_lhs |
25865 | = (const struct partial_die_info *) item_lhs; | |
25866 | const struct partial_die_info *part_die_rhs | |
25867 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25868 | |
9c541725 | 25869 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25870 | } |
25871 | ||
b4f54984 DE |
25872 | static struct cmd_list_element *set_dwarf_cmdlist; |
25873 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25874 | |
25875 | static void | |
981a3fb3 | 25876 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25877 | { |
b4f54984 | 25878 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25879 | gdb_stdout); |
ae038cb0 DJ |
25880 | } |
25881 | ||
25882 | static void | |
981a3fb3 | 25883 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25884 | { |
b4f54984 | 25885 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25886 | } |
25887 | ||
ae2de4f8 | 25888 | /* The "save gdb-index" command. */ |
9291a0cd | 25889 | |
437afbb8 JK |
25890 | /* Write SIZE bytes from the buffer pointed to by DATA to FILE, with |
25891 | error checking. */ | |
25892 | ||
25893 | static void | |
25894 | file_write (FILE *file, const void *data, size_t size) | |
25895 | { | |
25896 | if (fwrite (data, 1, size, file) != size) | |
25897 | error (_("couldn't data write to file")); | |
25898 | } | |
25899 | ||
25900 | /* Write the contents of VEC to FILE, with error checking. */ | |
25901 | ||
25902 | template<typename Elem, typename Alloc> | |
25903 | static void | |
25904 | file_write (FILE *file, const std::vector<Elem, Alloc> &vec) | |
25905 | { | |
25906 | file_write (file, vec.data (), vec.size () * sizeof (vec[0])); | |
25907 | } | |
25908 | ||
bc8f2430 JK |
25909 | /* In-memory buffer to prepare data to be written later to a file. */ |
25910 | class data_buf | |
9291a0cd | 25911 | { |
bc8f2430 | 25912 | public: |
bc8f2430 JK |
25913 | /* Copy DATA to the end of the buffer. */ |
25914 | template<typename T> | |
25915 | void append_data (const T &data) | |
25916 | { | |
25917 | std::copy (reinterpret_cast<const gdb_byte *> (&data), | |
25918 | reinterpret_cast<const gdb_byte *> (&data + 1), | |
c2f134ac | 25919 | grow (sizeof (data))); |
bc8f2430 | 25920 | } |
b89be57b | 25921 | |
c2f134ac PA |
25922 | /* Copy CSTR (a zero-terminated string) to the end of buffer. The |
25923 | terminating zero is appended too. */ | |
bc8f2430 JK |
25924 | void append_cstr0 (const char *cstr) |
25925 | { | |
25926 | const size_t size = strlen (cstr) + 1; | |
c2f134ac PA |
25927 | std::copy (cstr, cstr + size, grow (size)); |
25928 | } | |
25929 | ||
437afbb8 JK |
25930 | /* Store INPUT as ULEB128 to the end of buffer. */ |
25931 | void append_unsigned_leb128 (ULONGEST input) | |
25932 | { | |
25933 | for (;;) | |
25934 | { | |
25935 | gdb_byte output = input & 0x7f; | |
25936 | input >>= 7; | |
25937 | if (input) | |
25938 | output |= 0x80; | |
25939 | append_data (output); | |
25940 | if (input == 0) | |
25941 | break; | |
25942 | } | |
25943 | } | |
25944 | ||
c2f134ac PA |
25945 | /* Accept a host-format integer in VAL and append it to the buffer |
25946 | as a target-format integer which is LEN bytes long. */ | |
25947 | void append_uint (size_t len, bfd_endian byte_order, ULONGEST val) | |
25948 | { | |
25949 | ::store_unsigned_integer (grow (len), len, byte_order, val); | |
bc8f2430 | 25950 | } |
9291a0cd | 25951 | |
bc8f2430 JK |
25952 | /* Return the size of the buffer. */ |
25953 | size_t size () const | |
25954 | { | |
25955 | return m_vec.size (); | |
25956 | } | |
25957 | ||
437afbb8 JK |
25958 | /* Return true iff the buffer is empty. */ |
25959 | bool empty () const | |
25960 | { | |
25961 | return m_vec.empty (); | |
25962 | } | |
25963 | ||
bc8f2430 JK |
25964 | /* Write the buffer to FILE. */ |
25965 | void file_write (FILE *file) const | |
25966 | { | |
437afbb8 | 25967 | ::file_write (file, m_vec); |
bc8f2430 JK |
25968 | } |
25969 | ||
25970 | private: | |
c2f134ac PA |
25971 | /* Grow SIZE bytes at the end of the buffer. Returns a pointer to |
25972 | the start of the new block. */ | |
25973 | gdb_byte *grow (size_t size) | |
25974 | { | |
25975 | m_vec.resize (m_vec.size () + size); | |
25976 | return &*m_vec.end () - size; | |
25977 | } | |
25978 | ||
d5722aa2 | 25979 | gdb::byte_vector m_vec; |
bc8f2430 | 25980 | }; |
9291a0cd TT |
25981 | |
25982 | /* An entry in the symbol table. */ | |
25983 | struct symtab_index_entry | |
25984 | { | |
25985 | /* The name of the symbol. */ | |
25986 | const char *name; | |
25987 | /* The offset of the name in the constant pool. */ | |
25988 | offset_type index_offset; | |
25989 | /* A sorted vector of the indices of all the CUs that hold an object | |
25990 | of this name. */ | |
bc8f2430 | 25991 | std::vector<offset_type> cu_indices; |
9291a0cd TT |
25992 | }; |
25993 | ||
25994 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
25995 | struct mapped_symtab | |
25996 | { | |
bc8f2430 JK |
25997 | mapped_symtab () |
25998 | { | |
25999 | data.resize (1024); | |
26000 | } | |
b89be57b | 26001 | |
bc8f2430 | 26002 | offset_type n_elements = 0; |
4b76cda9 | 26003 | std::vector<symtab_index_entry> data; |
bc8f2430 | 26004 | }; |
9291a0cd | 26005 | |
bc8f2430 | 26006 | /* Find a slot in SYMTAB for the symbol NAME. Returns a reference to |
559a7a62 JK |
26007 | the slot. |
26008 | ||
26009 | Function is used only during write_hash_table so no index format backward | |
26010 | compatibility is needed. */ | |
b89be57b | 26011 | |
4b76cda9 | 26012 | static symtab_index_entry & |
9291a0cd TT |
26013 | find_slot (struct mapped_symtab *symtab, const char *name) |
26014 | { | |
559a7a62 | 26015 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd | 26016 | |
bc8f2430 JK |
26017 | index = hash & (symtab->data.size () - 1); |
26018 | step = ((hash * 17) & (symtab->data.size () - 1)) | 1; | |
9291a0cd TT |
26019 | |
26020 | for (;;) | |
26021 | { | |
4b76cda9 PA |
26022 | if (symtab->data[index].name == NULL |
26023 | || strcmp (name, symtab->data[index].name) == 0) | |
bc8f2430 JK |
26024 | return symtab->data[index]; |
26025 | index = (index + step) & (symtab->data.size () - 1); | |
9291a0cd TT |
26026 | } |
26027 | } | |
26028 | ||
26029 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 26030 | |
9291a0cd TT |
26031 | static void |
26032 | hash_expand (struct mapped_symtab *symtab) | |
26033 | { | |
bc8f2430 | 26034 | auto old_entries = std::move (symtab->data); |
9291a0cd | 26035 | |
bc8f2430 JK |
26036 | symtab->data.clear (); |
26037 | symtab->data.resize (old_entries.size () * 2); | |
9291a0cd | 26038 | |
bc8f2430 | 26039 | for (auto &it : old_entries) |
4b76cda9 | 26040 | if (it.name != NULL) |
bc8f2430 | 26041 | { |
4b76cda9 | 26042 | auto &ref = find_slot (symtab, it.name); |
bc8f2430 JK |
26043 | ref = std::move (it); |
26044 | } | |
9291a0cd TT |
26045 | } |
26046 | ||
156942c7 DE |
26047 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
26048 | CU_INDEX is the index of the CU in which the symbol appears. | |
26049 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 26050 | |
9291a0cd TT |
26051 | static void |
26052 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 26053 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
26054 | offset_type cu_index) |
26055 | { | |
156942c7 | 26056 | offset_type cu_index_and_attrs; |
9291a0cd TT |
26057 | |
26058 | ++symtab->n_elements; | |
bc8f2430 | 26059 | if (4 * symtab->n_elements / 3 >= symtab->data.size ()) |
9291a0cd TT |
26060 | hash_expand (symtab); |
26061 | ||
4b76cda9 PA |
26062 | symtab_index_entry &slot = find_slot (symtab, name); |
26063 | if (slot.name == NULL) | |
9291a0cd | 26064 | { |
4b76cda9 | 26065 | slot.name = name; |
156942c7 | 26066 | /* index_offset is set later. */ |
9291a0cd | 26067 | } |
156942c7 DE |
26068 | |
26069 | cu_index_and_attrs = 0; | |
26070 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
26071 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
26072 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
26073 | ||
26074 | /* We don't want to record an index value twice as we want to avoid the | |
26075 | duplication. | |
26076 | We process all global symbols and then all static symbols | |
26077 | (which would allow us to avoid the duplication by only having to check | |
26078 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
26079 | To keep things simple we don't worry about the duplication here and | |
26080 | sort and uniqufy the list after we've processed all symbols. */ | |
4b76cda9 | 26081 | slot.cu_indices.push_back (cu_index_and_attrs); |
156942c7 DE |
26082 | } |
26083 | ||
26084 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
26085 | ||
26086 | static void | |
26087 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
26088 | { | |
4b76cda9 | 26089 | for (auto &entry : symtab->data) |
156942c7 | 26090 | { |
4b76cda9 | 26091 | if (entry.name != NULL && !entry.cu_indices.empty ()) |
156942c7 | 26092 | { |
4b76cda9 | 26093 | auto &cu_indices = entry.cu_indices; |
6fd931f2 PA |
26094 | std::sort (cu_indices.begin (), cu_indices.end ()); |
26095 | auto from = std::unique (cu_indices.begin (), cu_indices.end ()); | |
26096 | cu_indices.erase (from, cu_indices.end ()); | |
156942c7 DE |
26097 | } |
26098 | } | |
9291a0cd TT |
26099 | } |
26100 | ||
bc8f2430 JK |
26101 | /* A form of 'const char *' suitable for container keys. Only the |
26102 | pointer is stored. The strings themselves are compared, not the | |
26103 | pointers. */ | |
26104 | class c_str_view | |
9291a0cd | 26105 | { |
bc8f2430 JK |
26106 | public: |
26107 | c_str_view (const char *cstr) | |
26108 | : m_cstr (cstr) | |
26109 | {} | |
9291a0cd | 26110 | |
bc8f2430 JK |
26111 | bool operator== (const c_str_view &other) const |
26112 | { | |
26113 | return strcmp (m_cstr, other.m_cstr) == 0; | |
26114 | } | |
9291a0cd | 26115 | |
437afbb8 JK |
26116 | /* Return the underlying C string. Note, the returned string is |
26117 | only a reference with lifetime of this object. */ | |
26118 | const char *c_str () const | |
26119 | { | |
26120 | return m_cstr; | |
26121 | } | |
26122 | ||
bc8f2430 JK |
26123 | private: |
26124 | friend class c_str_view_hasher; | |
26125 | const char *const m_cstr; | |
26126 | }; | |
9291a0cd | 26127 | |
bc8f2430 JK |
26128 | /* A std::unordered_map::hasher for c_str_view that uses the right |
26129 | hash function for strings in a mapped index. */ | |
26130 | class c_str_view_hasher | |
26131 | { | |
26132 | public: | |
26133 | size_t operator () (const c_str_view &x) const | |
26134 | { | |
26135 | return mapped_index_string_hash (INT_MAX, x.m_cstr); | |
26136 | } | |
26137 | }; | |
b89be57b | 26138 | |
bc8f2430 JK |
26139 | /* A std::unordered_map::hasher for std::vector<>. */ |
26140 | template<typename T> | |
26141 | class vector_hasher | |
9291a0cd | 26142 | { |
bc8f2430 JK |
26143 | public: |
26144 | size_t operator () (const std::vector<T> &key) const | |
26145 | { | |
26146 | return iterative_hash (key.data (), | |
26147 | sizeof (key.front ()) * key.size (), 0); | |
26148 | } | |
26149 | }; | |
9291a0cd | 26150 | |
bc8f2430 JK |
26151 | /* Write the mapped hash table SYMTAB to the data buffer OUTPUT, with |
26152 | constant pool entries going into the data buffer CPOOL. */ | |
3876f04e | 26153 | |
bc8f2430 JK |
26154 | static void |
26155 | write_hash_table (mapped_symtab *symtab, data_buf &output, data_buf &cpool) | |
26156 | { | |
26157 | { | |
26158 | /* Elements are sorted vectors of the indices of all the CUs that | |
26159 | hold an object of this name. */ | |
26160 | std::unordered_map<std::vector<offset_type>, offset_type, | |
26161 | vector_hasher<offset_type>> | |
26162 | symbol_hash_table; | |
26163 | ||
26164 | /* We add all the index vectors to the constant pool first, to | |
26165 | ensure alignment is ok. */ | |
4b76cda9 | 26166 | for (symtab_index_entry &entry : symtab->data) |
bc8f2430 | 26167 | { |
4b76cda9 | 26168 | if (entry.name == NULL) |
bc8f2430 | 26169 | continue; |
4b76cda9 | 26170 | gdb_assert (entry.index_offset == 0); |
70a1152b PA |
26171 | |
26172 | /* Finding before inserting is faster than always trying to | |
26173 | insert, because inserting always allocates a node, does the | |
26174 | lookup, and then destroys the new node if another node | |
26175 | already had the same key. C++17 try_emplace will avoid | |
26176 | this. */ | |
26177 | const auto found | |
4b76cda9 | 26178 | = symbol_hash_table.find (entry.cu_indices); |
70a1152b PA |
26179 | if (found != symbol_hash_table.end ()) |
26180 | { | |
4b76cda9 | 26181 | entry.index_offset = found->second; |
70a1152b PA |
26182 | continue; |
26183 | } | |
26184 | ||
4b76cda9 PA |
26185 | symbol_hash_table.emplace (entry.cu_indices, cpool.size ()); |
26186 | entry.index_offset = cpool.size (); | |
26187 | cpool.append_data (MAYBE_SWAP (entry.cu_indices.size ())); | |
26188 | for (const auto index : entry.cu_indices) | |
26189 | cpool.append_data (MAYBE_SWAP (index)); | |
bc8f2430 JK |
26190 | } |
26191 | } | |
9291a0cd TT |
26192 | |
26193 | /* Now write out the hash table. */ | |
bc8f2430 | 26194 | std::unordered_map<c_str_view, offset_type, c_str_view_hasher> str_table; |
4b76cda9 | 26195 | for (const auto &entry : symtab->data) |
9291a0cd TT |
26196 | { |
26197 | offset_type str_off, vec_off; | |
26198 | ||
4b76cda9 | 26199 | if (entry.name != NULL) |
9291a0cd | 26200 | { |
4b76cda9 | 26201 | const auto insertpair = str_table.emplace (entry.name, cpool.size ()); |
bc8f2430 | 26202 | if (insertpair.second) |
4b76cda9 | 26203 | cpool.append_cstr0 (entry.name); |
bc8f2430 | 26204 | str_off = insertpair.first->second; |
4b76cda9 | 26205 | vec_off = entry.index_offset; |
9291a0cd TT |
26206 | } |
26207 | else | |
26208 | { | |
26209 | /* While 0 is a valid constant pool index, it is not valid | |
26210 | to have 0 for both offsets. */ | |
26211 | str_off = 0; | |
26212 | vec_off = 0; | |
26213 | } | |
26214 | ||
bc8f2430 JK |
26215 | output.append_data (MAYBE_SWAP (str_off)); |
26216 | output.append_data (MAYBE_SWAP (vec_off)); | |
9291a0cd | 26217 | } |
9291a0cd TT |
26218 | } |
26219 | ||
bc8f2430 | 26220 | typedef std::unordered_map<partial_symtab *, unsigned int> psym_index_map; |
0a5429f6 DE |
26221 | |
26222 | /* Helper struct for building the address table. */ | |
26223 | struct addrmap_index_data | |
26224 | { | |
bc8f2430 JK |
26225 | addrmap_index_data (data_buf &addr_vec_, psym_index_map &cu_index_htab_) |
26226 | : addr_vec (addr_vec_), cu_index_htab (cu_index_htab_) | |
26227 | {} | |
26228 | ||
0a5429f6 | 26229 | struct objfile *objfile; |
bc8f2430 JK |
26230 | data_buf &addr_vec; |
26231 | psym_index_map &cu_index_htab; | |
0a5429f6 DE |
26232 | |
26233 | /* Non-zero if the previous_* fields are valid. | |
26234 | We can't write an entry until we see the next entry (since it is only then | |
26235 | that we know the end of the entry). */ | |
26236 | int previous_valid; | |
26237 | /* Index of the CU in the table of all CUs in the index file. */ | |
26238 | unsigned int previous_cu_index; | |
0963b4bd | 26239 | /* Start address of the CU. */ |
0a5429f6 DE |
26240 | CORE_ADDR previous_cu_start; |
26241 | }; | |
26242 | ||
bc8f2430 | 26243 | /* Write an address entry to ADDR_VEC. */ |
b89be57b | 26244 | |
9291a0cd | 26245 | static void |
bc8f2430 | 26246 | add_address_entry (struct objfile *objfile, data_buf &addr_vec, |
0a5429f6 | 26247 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) |
9291a0cd | 26248 | { |
9291a0cd TT |
26249 | CORE_ADDR baseaddr; |
26250 | ||
26251 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
26252 | ||
c2f134ac PA |
26253 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, start - baseaddr); |
26254 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
bc8f2430 | 26255 | addr_vec.append_data (MAYBE_SWAP (cu_index)); |
0a5429f6 DE |
26256 | } |
26257 | ||
26258 | /* Worker function for traversing an addrmap to build the address table. */ | |
26259 | ||
26260 | static int | |
26261 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
26262 | { | |
9a3c8263 SM |
26263 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
26264 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
26265 | |
26266 | if (data->previous_valid) | |
bc8f2430 | 26267 | add_address_entry (data->objfile, data->addr_vec, |
0a5429f6 DE |
26268 | data->previous_cu_start, start_addr, |
26269 | data->previous_cu_index); | |
26270 | ||
26271 | data->previous_cu_start = start_addr; | |
26272 | if (pst != NULL) | |
26273 | { | |
bc8f2430 JK |
26274 | const auto it = data->cu_index_htab.find (pst); |
26275 | gdb_assert (it != data->cu_index_htab.cend ()); | |
26276 | data->previous_cu_index = it->second; | |
0a5429f6 DE |
26277 | data->previous_valid = 1; |
26278 | } | |
26279 | else | |
bc8f2430 | 26280 | data->previous_valid = 0; |
0a5429f6 DE |
26281 | |
26282 | return 0; | |
26283 | } | |
26284 | ||
bc8f2430 | 26285 | /* Write OBJFILE's address map to ADDR_VEC. |
0a5429f6 DE |
26286 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices |
26287 | in the index file. */ | |
26288 | ||
26289 | static void | |
bc8f2430 JK |
26290 | write_address_map (struct objfile *objfile, data_buf &addr_vec, |
26291 | psym_index_map &cu_index_htab) | |
0a5429f6 | 26292 | { |
bc8f2430 | 26293 | struct addrmap_index_data addrmap_index_data (addr_vec, cu_index_htab); |
0a5429f6 DE |
26294 | |
26295 | /* When writing the address table, we have to cope with the fact that | |
26296 | the addrmap iterator only provides the start of a region; we have to | |
26297 | wait until the next invocation to get the start of the next region. */ | |
26298 | ||
26299 | addrmap_index_data.objfile = objfile; | |
0a5429f6 DE |
26300 | addrmap_index_data.previous_valid = 0; |
26301 | ||
26302 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
26303 | &addrmap_index_data); | |
26304 | ||
26305 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
26306 | is valid, but we should still handle it. | |
26307 | The end address is recorded as the start of the next region, but that | |
26308 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
26309 | anyway. */ | |
26310 | if (addrmap_index_data.previous_valid) | |
bc8f2430 | 26311 | add_address_entry (objfile, addr_vec, |
0a5429f6 DE |
26312 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, |
26313 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
26314 | } |
26315 | ||
156942c7 DE |
26316 | /* Return the symbol kind of PSYM. */ |
26317 | ||
26318 | static gdb_index_symbol_kind | |
26319 | symbol_kind (struct partial_symbol *psym) | |
26320 | { | |
26321 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
26322 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
26323 | ||
26324 | switch (domain) | |
26325 | { | |
26326 | case VAR_DOMAIN: | |
26327 | switch (aclass) | |
26328 | { | |
26329 | case LOC_BLOCK: | |
26330 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
26331 | case LOC_TYPEDEF: | |
26332 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
26333 | case LOC_COMPUTED: | |
26334 | case LOC_CONST_BYTES: | |
26335 | case LOC_OPTIMIZED_OUT: | |
26336 | case LOC_STATIC: | |
26337 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
26338 | case LOC_CONST: | |
26339 | /* Note: It's currently impossible to recognize psyms as enum values | |
26340 | short of reading the type info. For now punt. */ | |
26341 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
26342 | default: | |
26343 | /* There are other LOC_FOO values that one might want to classify | |
26344 | as variables, but dwarf2read.c doesn't currently use them. */ | |
26345 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
26346 | } | |
26347 | case STRUCT_DOMAIN: | |
26348 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
26349 | default: | |
26350 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
26351 | } | |
26352 | } | |
26353 | ||
9291a0cd | 26354 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 26355 | |
9291a0cd TT |
26356 | static void |
26357 | write_psymbols (struct mapped_symtab *symtab, | |
bc8f2430 | 26358 | std::unordered_set<partial_symbol *> &psyms_seen, |
9291a0cd TT |
26359 | struct partial_symbol **psymp, |
26360 | int count, | |
987d643c TT |
26361 | offset_type cu_index, |
26362 | int is_static) | |
9291a0cd TT |
26363 | { |
26364 | for (; count-- > 0; ++psymp) | |
26365 | { | |
156942c7 | 26366 | struct partial_symbol *psym = *psymp; |
987d643c | 26367 | |
156942c7 | 26368 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 26369 | error (_("Ada is not currently supported by the index")); |
987d643c | 26370 | |
987d643c | 26371 | /* Only add a given psymbol once. */ |
bc8f2430 | 26372 | if (psyms_seen.insert (psym).second) |
987d643c | 26373 | { |
156942c7 DE |
26374 | gdb_index_symbol_kind kind = symbol_kind (psym); |
26375 | ||
156942c7 DE |
26376 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), |
26377 | is_static, kind, cu_index); | |
987d643c | 26378 | } |
9291a0cd TT |
26379 | } |
26380 | } | |
26381 | ||
1fd400ff TT |
26382 | /* A helper struct used when iterating over debug_types. */ |
26383 | struct signatured_type_index_data | |
26384 | { | |
bc8f2430 JK |
26385 | signatured_type_index_data (data_buf &types_list_, |
26386 | std::unordered_set<partial_symbol *> &psyms_seen_) | |
26387 | : types_list (types_list_), psyms_seen (psyms_seen_) | |
26388 | {} | |
26389 | ||
1fd400ff TT |
26390 | struct objfile *objfile; |
26391 | struct mapped_symtab *symtab; | |
bc8f2430 JK |
26392 | data_buf &types_list; |
26393 | std::unordered_set<partial_symbol *> &psyms_seen; | |
1fd400ff TT |
26394 | int cu_index; |
26395 | }; | |
26396 | ||
26397 | /* A helper function that writes a single signatured_type to an | |
26398 | obstack. */ | |
b89be57b | 26399 | |
1fd400ff TT |
26400 | static int |
26401 | write_one_signatured_type (void **slot, void *d) | |
26402 | { | |
9a3c8263 SM |
26403 | struct signatured_type_index_data *info |
26404 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 26405 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 26406 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
26407 | |
26408 | write_psymbols (info->symtab, | |
987d643c | 26409 | info->psyms_seen, |
af5bf4ad | 26410 | &info->objfile->global_psymbols[psymtab->globals_offset], |
987d643c TT |
26411 | psymtab->n_global_syms, info->cu_index, |
26412 | 0); | |
1fd400ff | 26413 | write_psymbols (info->symtab, |
987d643c | 26414 | info->psyms_seen, |
af5bf4ad | 26415 | &info->objfile->static_psymbols[psymtab->statics_offset], |
987d643c TT |
26416 | psymtab->n_static_syms, info->cu_index, |
26417 | 1); | |
1fd400ff | 26418 | |
c2f134ac PA |
26419 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, |
26420 | to_underlying (entry->per_cu.sect_off)); | |
26421 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, | |
26422 | to_underlying (entry->type_offset_in_tu)); | |
26423 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, entry->signature); | |
1fd400ff TT |
26424 | |
26425 | ++info->cu_index; | |
26426 | ||
26427 | return 1; | |
26428 | } | |
26429 | ||
e8f8bcb3 PA |
26430 | /* Recurse into all "included" dependencies and count their symbols as |
26431 | if they appeared in this psymtab. */ | |
26432 | ||
26433 | static void | |
26434 | recursively_count_psymbols (struct partial_symtab *psymtab, | |
26435 | size_t &psyms_seen) | |
26436 | { | |
26437 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26438 | if (psymtab->dependencies[i]->user != NULL) | |
26439 | recursively_count_psymbols (psymtab->dependencies[i], | |
26440 | psyms_seen); | |
26441 | ||
26442 | psyms_seen += psymtab->n_global_syms; | |
26443 | psyms_seen += psymtab->n_static_syms; | |
26444 | } | |
26445 | ||
95554aad TT |
26446 | /* Recurse into all "included" dependencies and write their symbols as |
26447 | if they appeared in this psymtab. */ | |
26448 | ||
26449 | static void | |
26450 | recursively_write_psymbols (struct objfile *objfile, | |
26451 | struct partial_symtab *psymtab, | |
26452 | struct mapped_symtab *symtab, | |
bc8f2430 | 26453 | std::unordered_set<partial_symbol *> &psyms_seen, |
95554aad TT |
26454 | offset_type cu_index) |
26455 | { | |
26456 | int i; | |
26457 | ||
26458 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
26459 | if (psymtab->dependencies[i]->user != NULL) | |
26460 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26461 | symtab, psyms_seen, cu_index); | |
26462 | ||
26463 | write_psymbols (symtab, | |
26464 | psyms_seen, | |
af5bf4ad | 26465 | &objfile->global_psymbols[psymtab->globals_offset], |
95554aad TT |
26466 | psymtab->n_global_syms, cu_index, |
26467 | 0); | |
26468 | write_psymbols (symtab, | |
26469 | psyms_seen, | |
af5bf4ad | 26470 | &objfile->static_psymbols[psymtab->statics_offset], |
95554aad TT |
26471 | psymtab->n_static_syms, cu_index, |
26472 | 1); | |
26473 | } | |
26474 | ||
437afbb8 JK |
26475 | /* DWARF-5 .debug_names builder. */ |
26476 | class debug_names | |
26477 | { | |
26478 | public: | |
ed2dc618 SM |
26479 | debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, bool is_dwarf64, |
26480 | bfd_endian dwarf5_byte_order) | |
437afbb8 JK |
26481 | : m_dwarf5_byte_order (dwarf5_byte_order), |
26482 | m_dwarf32 (dwarf5_byte_order), | |
26483 | m_dwarf64 (dwarf5_byte_order), | |
26484 | m_dwarf (is_dwarf64 | |
26485 | ? static_cast<dwarf &> (m_dwarf64) | |
26486 | : static_cast<dwarf &> (m_dwarf32)), | |
26487 | m_name_table_string_offs (m_dwarf.name_table_string_offs), | |
ed2dc618 SM |
26488 | m_name_table_entry_offs (m_dwarf.name_table_entry_offs), |
26489 | m_debugstrlookup (dwarf2_per_objfile) | |
437afbb8 | 26490 | {} |
9291a0cd | 26491 | |
8af5c486 JK |
26492 | int dwarf5_offset_size () const |
26493 | { | |
26494 | const bool dwarf5_is_dwarf64 = &m_dwarf == &m_dwarf64; | |
26495 | return dwarf5_is_dwarf64 ? 8 : 4; | |
26496 | } | |
26497 | ||
26498 | /* Is this symbol from DW_TAG_compile_unit or DW_TAG_type_unit? */ | |
26499 | enum class unit_kind { cu, tu }; | |
26500 | ||
437afbb8 | 26501 | /* Insert one symbol. */ |
8af5c486 JK |
26502 | void insert (const partial_symbol *psym, int cu_index, bool is_static, |
26503 | unit_kind kind) | |
437afbb8 JK |
26504 | { |
26505 | const int dwarf_tag = psymbol_tag (psym); | |
26506 | if (dwarf_tag == 0) | |
26507 | return; | |
26508 | const char *const name = SYMBOL_SEARCH_NAME (psym); | |
26509 | const auto insertpair | |
26510 | = m_name_to_value_set.emplace (c_str_view (name), | |
26511 | std::set<symbol_value> ()); | |
26512 | std::set<symbol_value> &value_set = insertpair.first->second; | |
8af5c486 | 26513 | value_set.emplace (symbol_value (dwarf_tag, cu_index, is_static, kind)); |
437afbb8 | 26514 | } |
9291a0cd | 26515 | |
437afbb8 JK |
26516 | /* Build all the tables. All symbols must be already inserted. |
26517 | This function does not call file_write, caller has to do it | |
26518 | afterwards. */ | |
26519 | void build () | |
26520 | { | |
26521 | /* Verify the build method has not be called twice. */ | |
26522 | gdb_assert (m_abbrev_table.empty ()); | |
26523 | const size_t name_count = m_name_to_value_set.size (); | |
26524 | m_bucket_table.resize | |
26525 | (std::pow (2, std::ceil (std::log2 (name_count * 4 / 3)))); | |
26526 | m_hash_table.reserve (name_count); | |
26527 | m_name_table_string_offs.reserve (name_count); | |
26528 | m_name_table_entry_offs.reserve (name_count); | |
26529 | ||
26530 | /* Map each hash of symbol to its name and value. */ | |
26531 | struct hash_it_pair | |
26532 | { | |
26533 | uint32_t hash; | |
26534 | decltype (m_name_to_value_set)::const_iterator it; | |
26535 | }; | |
26536 | std::vector<std::forward_list<hash_it_pair>> bucket_hash; | |
26537 | bucket_hash.resize (m_bucket_table.size ()); | |
26538 | for (decltype (m_name_to_value_set)::const_iterator it | |
26539 | = m_name_to_value_set.cbegin (); | |
26540 | it != m_name_to_value_set.cend (); | |
26541 | ++it) | |
26542 | { | |
26543 | const char *const name = it->first.c_str (); | |
26544 | const uint32_t hash = dwarf5_djb_hash (name); | |
26545 | hash_it_pair hashitpair; | |
26546 | hashitpair.hash = hash; | |
26547 | hashitpair.it = it; | |
26548 | auto &slot = bucket_hash[hash % bucket_hash.size()]; | |
26549 | slot.push_front (std::move (hashitpair)); | |
26550 | } | |
26551 | for (size_t bucket_ix = 0; bucket_ix < bucket_hash.size (); ++bucket_ix) | |
26552 | { | |
26553 | const std::forward_list<hash_it_pair> &hashitlist | |
26554 | = bucket_hash[bucket_ix]; | |
26555 | if (hashitlist.empty ()) | |
26556 | continue; | |
26557 | uint32_t &bucket_slot = m_bucket_table[bucket_ix]; | |
26558 | /* The hashes array is indexed starting at 1. */ | |
26559 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&bucket_slot), | |
26560 | sizeof (bucket_slot), m_dwarf5_byte_order, | |
26561 | m_hash_table.size () + 1); | |
26562 | for (const hash_it_pair &hashitpair : hashitlist) | |
26563 | { | |
26564 | m_hash_table.push_back (0); | |
26565 | store_unsigned_integer (reinterpret_cast<gdb_byte *> | |
26566 | (&m_hash_table.back ()), | |
26567 | sizeof (m_hash_table.back ()), | |
26568 | m_dwarf5_byte_order, hashitpair.hash); | |
26569 | const c_str_view &name = hashitpair.it->first; | |
26570 | const std::set<symbol_value> &value_set = hashitpair.it->second; | |
26571 | m_name_table_string_offs.push_back_reorder | |
26572 | (m_debugstrlookup.lookup (name.c_str ())); | |
26573 | m_name_table_entry_offs.push_back_reorder (m_entry_pool.size ()); | |
26574 | gdb_assert (!value_set.empty ()); | |
26575 | for (const symbol_value &value : value_set) | |
26576 | { | |
26577 | int &idx = m_indexkey_to_idx[index_key (value.dwarf_tag, | |
8af5c486 JK |
26578 | value.is_static, |
26579 | value.kind)]; | |
437afbb8 JK |
26580 | if (idx == 0) |
26581 | { | |
26582 | idx = m_idx_next++; | |
26583 | m_abbrev_table.append_unsigned_leb128 (idx); | |
26584 | m_abbrev_table.append_unsigned_leb128 (value.dwarf_tag); | |
8af5c486 JK |
26585 | m_abbrev_table.append_unsigned_leb128 |
26586 | (value.kind == unit_kind::cu ? DW_IDX_compile_unit | |
26587 | : DW_IDX_type_unit); | |
437afbb8 JK |
26588 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_udata); |
26589 | m_abbrev_table.append_unsigned_leb128 (value.is_static | |
26590 | ? DW_IDX_GNU_internal | |
26591 | : DW_IDX_GNU_external); | |
26592 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_flag_present); | |
26593 | ||
26594 | /* Terminate attributes list. */ | |
26595 | m_abbrev_table.append_unsigned_leb128 (0); | |
26596 | m_abbrev_table.append_unsigned_leb128 (0); | |
26597 | } | |
9291a0cd | 26598 | |
437afbb8 JK |
26599 | m_entry_pool.append_unsigned_leb128 (idx); |
26600 | m_entry_pool.append_unsigned_leb128 (value.cu_index); | |
26601 | } | |
9291a0cd | 26602 | |
437afbb8 JK |
26603 | /* Terminate the list of CUs. */ |
26604 | m_entry_pool.append_unsigned_leb128 (0); | |
26605 | } | |
26606 | } | |
26607 | gdb_assert (m_hash_table.size () == name_count); | |
987d643c | 26608 | |
437afbb8 JK |
26609 | /* Terminate tags list. */ |
26610 | m_abbrev_table.append_unsigned_leb128 (0); | |
26611 | } | |
0a5429f6 | 26612 | |
437afbb8 JK |
26613 | /* Return .debug_names bucket count. This must be called only after |
26614 | calling the build method. */ | |
26615 | uint32_t bucket_count () const | |
26616 | { | |
26617 | /* Verify the build method has been already called. */ | |
26618 | gdb_assert (!m_abbrev_table.empty ()); | |
26619 | const uint32_t retval = m_bucket_table.size (); | |
26620 | ||
26621 | /* Check for overflow. */ | |
26622 | gdb_assert (retval == m_bucket_table.size ()); | |
26623 | return retval; | |
26624 | } | |
26625 | ||
26626 | /* Return .debug_names names count. This must be called only after | |
26627 | calling the build method. */ | |
26628 | uint32_t name_count () const | |
26629 | { | |
26630 | /* Verify the build method has been already called. */ | |
26631 | gdb_assert (!m_abbrev_table.empty ()); | |
26632 | const uint32_t retval = m_hash_table.size (); | |
26633 | ||
26634 | /* Check for overflow. */ | |
26635 | gdb_assert (retval == m_hash_table.size ()); | |
26636 | return retval; | |
26637 | } | |
26638 | ||
26639 | /* Return number of bytes of .debug_names abbreviation table. This | |
26640 | must be called only after calling the build method. */ | |
26641 | uint32_t abbrev_table_bytes () const | |
26642 | { | |
26643 | gdb_assert (!m_abbrev_table.empty ()); | |
26644 | return m_abbrev_table.size (); | |
26645 | } | |
26646 | ||
26647 | /* Recurse into all "included" dependencies and store their symbols | |
26648 | as if they appeared in this psymtab. */ | |
26649 | void recursively_write_psymbols | |
26650 | (struct objfile *objfile, | |
26651 | struct partial_symtab *psymtab, | |
26652 | std::unordered_set<partial_symbol *> &psyms_seen, | |
26653 | int cu_index) | |
26654 | { | |
26655 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26656 | if (psymtab->dependencies[i]->user != NULL) | |
26657 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26658 | psyms_seen, cu_index); | |
26659 | ||
26660 | write_psymbols (psyms_seen, | |
26661 | &objfile->global_psymbols[psymtab->globals_offset], | |
8af5c486 | 26662 | psymtab->n_global_syms, cu_index, false, unit_kind::cu); |
437afbb8 JK |
26663 | write_psymbols (psyms_seen, |
26664 | &objfile->static_psymbols[psymtab->statics_offset], | |
8af5c486 | 26665 | psymtab->n_static_syms, cu_index, true, unit_kind::cu); |
437afbb8 JK |
26666 | } |
26667 | ||
26668 | /* Return number of bytes the .debug_names section will have. This | |
26669 | must be called only after calling the build method. */ | |
26670 | size_t bytes () const | |
26671 | { | |
26672 | /* Verify the build method has been already called. */ | |
26673 | gdb_assert (!m_abbrev_table.empty ()); | |
26674 | size_t expected_bytes = 0; | |
26675 | expected_bytes += m_bucket_table.size () * sizeof (m_bucket_table[0]); | |
26676 | expected_bytes += m_hash_table.size () * sizeof (m_hash_table[0]); | |
26677 | expected_bytes += m_name_table_string_offs.bytes (); | |
26678 | expected_bytes += m_name_table_entry_offs.bytes (); | |
26679 | expected_bytes += m_abbrev_table.size (); | |
26680 | expected_bytes += m_entry_pool.size (); | |
26681 | return expected_bytes; | |
26682 | } | |
26683 | ||
26684 | /* Write .debug_names to FILE_NAMES and .debug_str addition to | |
26685 | FILE_STR. This must be called only after calling the build | |
26686 | method. */ | |
26687 | void file_write (FILE *file_names, FILE *file_str) const | |
26688 | { | |
26689 | /* Verify the build method has been already called. */ | |
26690 | gdb_assert (!m_abbrev_table.empty ()); | |
26691 | ::file_write (file_names, m_bucket_table); | |
26692 | ::file_write (file_names, m_hash_table); | |
26693 | m_name_table_string_offs.file_write (file_names); | |
26694 | m_name_table_entry_offs.file_write (file_names); | |
26695 | m_abbrev_table.file_write (file_names); | |
26696 | m_entry_pool.file_write (file_names); | |
26697 | m_debugstrlookup.file_write (file_str); | |
26698 | } | |
26699 | ||
8af5c486 JK |
26700 | /* A helper user data for write_one_signatured_type. */ |
26701 | class write_one_signatured_type_data | |
26702 | { | |
26703 | public: | |
26704 | write_one_signatured_type_data (debug_names &nametable_, | |
26705 | signatured_type_index_data &&info_) | |
26706 | : nametable (nametable_), info (std::move (info_)) | |
26707 | {} | |
26708 | debug_names &nametable; | |
26709 | struct signatured_type_index_data info; | |
26710 | }; | |
26711 | ||
26712 | /* A helper function to pass write_one_signatured_type to | |
26713 | htab_traverse_noresize. */ | |
26714 | static int | |
26715 | write_one_signatured_type (void **slot, void *d) | |
26716 | { | |
26717 | write_one_signatured_type_data *data = (write_one_signatured_type_data *) d; | |
26718 | struct signatured_type_index_data *info = &data->info; | |
26719 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
26720 | ||
26721 | data->nametable.write_one_signatured_type (entry, info); | |
26722 | ||
26723 | return 1; | |
26724 | } | |
26725 | ||
437afbb8 JK |
26726 | private: |
26727 | ||
26728 | /* Storage for symbol names mapping them to their .debug_str section | |
26729 | offsets. */ | |
26730 | class debug_str_lookup | |
26731 | { | |
26732 | public: | |
26733 | ||
26734 | /* Object costructor to be called for current DWARF2_PER_OBJFILE. | |
26735 | All .debug_str section strings are automatically stored. */ | |
ed2dc618 SM |
26736 | debug_str_lookup (struct dwarf2_per_objfile *dwarf2_per_objfile) |
26737 | : m_abfd (dwarf2_per_objfile->objfile->obfd), | |
26738 | m_dwarf2_per_objfile (dwarf2_per_objfile) | |
437afbb8 JK |
26739 | { |
26740 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
26741 | &dwarf2_per_objfile->str); | |
26742 | if (dwarf2_per_objfile->str.buffer == NULL) | |
26743 | return; | |
26744 | for (const gdb_byte *data = dwarf2_per_objfile->str.buffer; | |
26745 | data < (dwarf2_per_objfile->str.buffer | |
26746 | + dwarf2_per_objfile->str.size);) | |
26747 | { | |
26748 | const char *const s = reinterpret_cast<const char *> (data); | |
26749 | const auto insertpair | |
26750 | = m_str_table.emplace (c_str_view (s), | |
26751 | data - dwarf2_per_objfile->str.buffer); | |
26752 | if (!insertpair.second) | |
26753 | complaint (&symfile_complaints, | |
26754 | _("Duplicate string \"%s\" in " | |
26755 | ".debug_str section [in module %s]"), | |
26756 | s, bfd_get_filename (m_abfd)); | |
26757 | data += strlen (s) + 1; | |
26758 | } | |
26759 | } | |
26760 | ||
26761 | /* Return offset of symbol name S in the .debug_str section. Add | |
26762 | such symbol to the section's end if it does not exist there | |
26763 | yet. */ | |
26764 | size_t lookup (const char *s) | |
26765 | { | |
26766 | const auto it = m_str_table.find (c_str_view (s)); | |
26767 | if (it != m_str_table.end ()) | |
26768 | return it->second; | |
ed2dc618 | 26769 | const size_t offset = (m_dwarf2_per_objfile->str.size |
437afbb8 JK |
26770 | + m_str_add_buf.size ()); |
26771 | m_str_table.emplace (c_str_view (s), offset); | |
26772 | m_str_add_buf.append_cstr0 (s); | |
26773 | return offset; | |
26774 | } | |
26775 | ||
26776 | /* Append the end of the .debug_str section to FILE. */ | |
26777 | void file_write (FILE *file) const | |
26778 | { | |
26779 | m_str_add_buf.file_write (file); | |
26780 | } | |
26781 | ||
26782 | private: | |
26783 | std::unordered_map<c_str_view, size_t, c_str_view_hasher> m_str_table; | |
26784 | bfd *const m_abfd; | |
ed2dc618 | 26785 | struct dwarf2_per_objfile *m_dwarf2_per_objfile; |
437afbb8 JK |
26786 | |
26787 | /* Data to add at the end of .debug_str for new needed symbol names. */ | |
26788 | data_buf m_str_add_buf; | |
26789 | }; | |
26790 | ||
26791 | /* Container to map used DWARF tags to their .debug_names abbreviation | |
26792 | tags. */ | |
26793 | class index_key | |
26794 | { | |
26795 | public: | |
8af5c486 JK |
26796 | index_key (int dwarf_tag_, bool is_static_, unit_kind kind_) |
26797 | : dwarf_tag (dwarf_tag_), is_static (is_static_), kind (kind_) | |
437afbb8 JK |
26798 | { |
26799 | } | |
26800 | ||
26801 | bool | |
26802 | operator== (const index_key &other) const | |
26803 | { | |
8af5c486 JK |
26804 | return (dwarf_tag == other.dwarf_tag && is_static == other.is_static |
26805 | && kind == other.kind); | |
437afbb8 JK |
26806 | } |
26807 | ||
26808 | const int dwarf_tag; | |
26809 | const bool is_static; | |
8af5c486 | 26810 | const unit_kind kind; |
437afbb8 JK |
26811 | }; |
26812 | ||
26813 | /* Provide std::unordered_map::hasher for index_key. */ | |
26814 | class index_key_hasher | |
26815 | { | |
26816 | public: | |
26817 | size_t | |
26818 | operator () (const index_key &key) const | |
26819 | { | |
26820 | return (std::hash<int>() (key.dwarf_tag) << 1) | key.is_static; | |
26821 | } | |
26822 | }; | |
26823 | ||
26824 | /* Parameters of one symbol entry. */ | |
26825 | class symbol_value | |
26826 | { | |
26827 | public: | |
26828 | const int dwarf_tag, cu_index; | |
26829 | const bool is_static; | |
8af5c486 | 26830 | const unit_kind kind; |
437afbb8 | 26831 | |
8af5c486 JK |
26832 | symbol_value (int dwarf_tag_, int cu_index_, bool is_static_, |
26833 | unit_kind kind_) | |
26834 | : dwarf_tag (dwarf_tag_), cu_index (cu_index_), is_static (is_static_), | |
26835 | kind (kind_) | |
437afbb8 JK |
26836 | {} |
26837 | ||
26838 | bool | |
26839 | operator< (const symbol_value &other) const | |
26840 | { | |
26841 | #define X(n) \ | |
26842 | do \ | |
26843 | { \ | |
26844 | if (n < other.n) \ | |
26845 | return true; \ | |
26846 | if (n > other.n) \ | |
26847 | return false; \ | |
26848 | } \ | |
26849 | while (0) | |
26850 | X (dwarf_tag); | |
26851 | X (is_static); | |
8af5c486 | 26852 | X (kind); |
437afbb8 JK |
26853 | X (cu_index); |
26854 | #undef X | |
26855 | return false; | |
26856 | } | |
26857 | }; | |
26858 | ||
26859 | /* Abstract base class to unify DWARF-32 and DWARF-64 name table | |
26860 | output. */ | |
26861 | class offset_vec | |
26862 | { | |
26863 | protected: | |
26864 | const bfd_endian dwarf5_byte_order; | |
26865 | public: | |
26866 | explicit offset_vec (bfd_endian dwarf5_byte_order_) | |
26867 | : dwarf5_byte_order (dwarf5_byte_order_) | |
26868 | {} | |
26869 | ||
26870 | /* Call std::vector::reserve for NELEM elements. */ | |
26871 | virtual void reserve (size_t nelem) = 0; | |
26872 | ||
26873 | /* Call std::vector::push_back with store_unsigned_integer byte | |
26874 | reordering for ELEM. */ | |
26875 | virtual void push_back_reorder (size_t elem) = 0; | |
26876 | ||
26877 | /* Return expected output size in bytes. */ | |
26878 | virtual size_t bytes () const = 0; | |
26879 | ||
26880 | /* Write name table to FILE. */ | |
26881 | virtual void file_write (FILE *file) const = 0; | |
26882 | }; | |
26883 | ||
26884 | /* Template to unify DWARF-32 and DWARF-64 output. */ | |
26885 | template<typename OffsetSize> | |
26886 | class offset_vec_tmpl : public offset_vec | |
26887 | { | |
26888 | public: | |
26889 | explicit offset_vec_tmpl (bfd_endian dwarf5_byte_order_) | |
26890 | : offset_vec (dwarf5_byte_order_) | |
26891 | {} | |
26892 | ||
26893 | /* Implement offset_vec::reserve. */ | |
26894 | void reserve (size_t nelem) override | |
26895 | { | |
26896 | m_vec.reserve (nelem); | |
26897 | } | |
26898 | ||
26899 | /* Implement offset_vec::push_back_reorder. */ | |
26900 | void push_back_reorder (size_t elem) override | |
26901 | { | |
26902 | m_vec.push_back (elem); | |
26903 | /* Check for overflow. */ | |
26904 | gdb_assert (m_vec.back () == elem); | |
26905 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&m_vec.back ()), | |
26906 | sizeof (m_vec.back ()), dwarf5_byte_order, elem); | |
26907 | } | |
26908 | ||
26909 | /* Implement offset_vec::bytes. */ | |
26910 | size_t bytes () const override | |
26911 | { | |
26912 | return m_vec.size () * sizeof (m_vec[0]); | |
26913 | } | |
26914 | ||
26915 | /* Implement offset_vec::file_write. */ | |
26916 | void file_write (FILE *file) const override | |
26917 | { | |
26918 | ::file_write (file, m_vec); | |
26919 | } | |
26920 | ||
26921 | private: | |
26922 | std::vector<OffsetSize> m_vec; | |
26923 | }; | |
26924 | ||
26925 | /* Base class to unify DWARF-32 and DWARF-64 .debug_names output | |
26926 | respecting name table width. */ | |
26927 | class dwarf | |
26928 | { | |
26929 | public: | |
26930 | offset_vec &name_table_string_offs, &name_table_entry_offs; | |
26931 | ||
26932 | dwarf (offset_vec &name_table_string_offs_, | |
26933 | offset_vec &name_table_entry_offs_) | |
26934 | : name_table_string_offs (name_table_string_offs_), | |
26935 | name_table_entry_offs (name_table_entry_offs_) | |
26936 | { | |
26937 | } | |
26938 | }; | |
e8f8bcb3 | 26939 | |
437afbb8 JK |
26940 | /* Template to unify DWARF-32 and DWARF-64 .debug_names output |
26941 | respecting name table width. */ | |
26942 | template<typename OffsetSize> | |
26943 | class dwarf_tmpl : public dwarf | |
26944 | { | |
26945 | public: | |
26946 | explicit dwarf_tmpl (bfd_endian dwarf5_byte_order_) | |
26947 | : dwarf (m_name_table_string_offs, m_name_table_entry_offs), | |
26948 | m_name_table_string_offs (dwarf5_byte_order_), | |
26949 | m_name_table_entry_offs (dwarf5_byte_order_) | |
26950 | {} | |
26951 | ||
26952 | private: | |
26953 | offset_vec_tmpl<OffsetSize> m_name_table_string_offs; | |
26954 | offset_vec_tmpl<OffsetSize> m_name_table_entry_offs; | |
26955 | }; | |
26956 | ||
26957 | /* Try to reconstruct original DWARF tag for given partial_symbol. | |
26958 | This function is not DWARF-5 compliant but it is sufficient for | |
26959 | GDB as a DWARF-5 index consumer. */ | |
26960 | static int psymbol_tag (const struct partial_symbol *psym) | |
26961 | { | |
26962 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
26963 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
26964 | ||
26965 | switch (domain) | |
26966 | { | |
26967 | case VAR_DOMAIN: | |
26968 | switch (aclass) | |
26969 | { | |
26970 | case LOC_BLOCK: | |
26971 | return DW_TAG_subprogram; | |
26972 | case LOC_TYPEDEF: | |
26973 | return DW_TAG_typedef; | |
26974 | case LOC_COMPUTED: | |
26975 | case LOC_CONST_BYTES: | |
26976 | case LOC_OPTIMIZED_OUT: | |
26977 | case LOC_STATIC: | |
26978 | return DW_TAG_variable; | |
26979 | case LOC_CONST: | |
26980 | /* Note: It's currently impossible to recognize psyms as enum values | |
26981 | short of reading the type info. For now punt. */ | |
26982 | return DW_TAG_variable; | |
26983 | default: | |
26984 | /* There are other LOC_FOO values that one might want to classify | |
26985 | as variables, but dwarf2read.c doesn't currently use them. */ | |
26986 | return DW_TAG_variable; | |
26987 | } | |
26988 | case STRUCT_DOMAIN: | |
26989 | return DW_TAG_structure_type; | |
26990 | default: | |
26991 | return 0; | |
26992 | } | |
26993 | } | |
26994 | ||
26995 | /* Call insert for all partial symbols and mark them in PSYMS_SEEN. */ | |
26996 | void write_psymbols (std::unordered_set<partial_symbol *> &psyms_seen, | |
26997 | struct partial_symbol **psymp, int count, int cu_index, | |
8af5c486 | 26998 | bool is_static, unit_kind kind) |
437afbb8 JK |
26999 | { |
27000 | for (; count-- > 0; ++psymp) | |
27001 | { | |
27002 | struct partial_symbol *psym = *psymp; | |
27003 | ||
27004 | if (SYMBOL_LANGUAGE (psym) == language_ada) | |
27005 | error (_("Ada is not currently supported by the index")); | |
27006 | ||
27007 | /* Only add a given psymbol once. */ | |
27008 | if (psyms_seen.insert (psym).second) | |
8af5c486 | 27009 | insert (psym, cu_index, is_static, kind); |
437afbb8 JK |
27010 | } |
27011 | } | |
27012 | ||
8af5c486 JK |
27013 | /* A helper function that writes a single signatured_type |
27014 | to a debug_names. */ | |
27015 | void | |
27016 | write_one_signatured_type (struct signatured_type *entry, | |
27017 | struct signatured_type_index_data *info) | |
27018 | { | |
27019 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; | |
27020 | ||
27021 | write_psymbols (info->psyms_seen, | |
27022 | &info->objfile->global_psymbols[psymtab->globals_offset], | |
27023 | psymtab->n_global_syms, info->cu_index, false, | |
27024 | unit_kind::tu); | |
27025 | write_psymbols (info->psyms_seen, | |
27026 | &info->objfile->static_psymbols[psymtab->statics_offset], | |
27027 | psymtab->n_static_syms, info->cu_index, true, | |
27028 | unit_kind::tu); | |
27029 | ||
27030 | info->types_list.append_uint (dwarf5_offset_size (), m_dwarf5_byte_order, | |
27031 | to_underlying (entry->per_cu.sect_off)); | |
27032 | ||
27033 | ++info->cu_index; | |
27034 | } | |
27035 | ||
437afbb8 JK |
27036 | /* Store value of each symbol. */ |
27037 | std::unordered_map<c_str_view, std::set<symbol_value>, c_str_view_hasher> | |
27038 | m_name_to_value_set; | |
27039 | ||
27040 | /* Tables of DWARF-5 .debug_names. They are in object file byte | |
27041 | order. */ | |
27042 | std::vector<uint32_t> m_bucket_table; | |
27043 | std::vector<uint32_t> m_hash_table; | |
27044 | ||
27045 | const bfd_endian m_dwarf5_byte_order; | |
27046 | dwarf_tmpl<uint32_t> m_dwarf32; | |
27047 | dwarf_tmpl<uint64_t> m_dwarf64; | |
27048 | dwarf &m_dwarf; | |
27049 | offset_vec &m_name_table_string_offs, &m_name_table_entry_offs; | |
27050 | debug_str_lookup m_debugstrlookup; | |
27051 | ||
27052 | /* Map each used .debug_names abbreviation tag parameter to its | |
27053 | index value. */ | |
27054 | std::unordered_map<index_key, int, index_key_hasher> m_indexkey_to_idx; | |
27055 | ||
27056 | /* Next unused .debug_names abbreviation tag for | |
27057 | m_indexkey_to_idx. */ | |
27058 | int m_idx_next = 1; | |
27059 | ||
27060 | /* .debug_names abbreviation table. */ | |
27061 | data_buf m_abbrev_table; | |
27062 | ||
27063 | /* .debug_names entry pool. */ | |
27064 | data_buf m_entry_pool; | |
27065 | }; | |
27066 | ||
27067 | /* Return iff any of the needed offsets does not fit into 32-bit | |
27068 | .debug_names section. */ | |
27069 | ||
27070 | static bool | |
ed2dc618 | 27071 | check_dwarf64_offsets (struct dwarf2_per_objfile *dwarf2_per_objfile) |
437afbb8 JK |
27072 | { |
27073 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
27074 | { | |
27075 | const dwarf2_per_cu_data &per_cu = *dwarf2_per_objfile->all_comp_units[i]; | |
27076 | ||
27077 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
27078 | return true; | |
27079 | } | |
27080 | for (int i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
27081 | { | |
27082 | const signatured_type &sigtype = *dwarf2_per_objfile->all_type_units[i]; | |
27083 | const dwarf2_per_cu_data &per_cu = sigtype.per_cu; | |
27084 | ||
27085 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
27086 | return true; | |
27087 | } | |
27088 | return false; | |
27089 | } | |
27090 | ||
27091 | /* The psyms_seen set is potentially going to be largish (~40k | |
27092 | elements when indexing a -g3 build of GDB itself). Estimate the | |
27093 | number of elements in order to avoid too many rehashes, which | |
27094 | require rebuilding buckets and thus many trips to | |
27095 | malloc/free. */ | |
27096 | ||
27097 | static size_t | |
ed2dc618 | 27098 | psyms_seen_size (struct dwarf2_per_objfile *dwarf2_per_objfile) |
437afbb8 | 27099 | { |
e8f8bcb3 PA |
27100 | size_t psyms_count = 0; |
27101 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
27102 | { | |
27103 | struct dwarf2_per_cu_data *per_cu | |
27104 | = dwarf2_per_objfile->all_comp_units[i]; | |
27105 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
27106 | ||
27107 | if (psymtab != NULL && psymtab->user == NULL) | |
27108 | recursively_count_psymbols (psymtab, psyms_count); | |
27109 | } | |
27110 | /* Generating an index for gdb itself shows a ratio of | |
27111 | TOTAL_SEEN_SYMS/UNIQUE_SYMS or ~5. 4 seems like a good bet. */ | |
437afbb8 JK |
27112 | return psyms_count / 4; |
27113 | } | |
27114 | ||
27115 | /* Write new .gdb_index section for OBJFILE into OUT_FILE. | |
27116 | Return how many bytes were expected to be written into OUT_FILE. */ | |
27117 | ||
27118 | static size_t | |
ed2dc618 | 27119 | write_gdbindex (struct dwarf2_per_objfile *dwarf2_per_objfile, FILE *out_file) |
437afbb8 | 27120 | { |
ed2dc618 | 27121 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
437afbb8 JK |
27122 | mapped_symtab symtab; |
27123 | data_buf cu_list; | |
27124 | ||
27125 | /* While we're scanning CU's create a table that maps a psymtab pointer | |
27126 | (which is what addrmap records) to its index (which is what is recorded | |
27127 | in the index file). This will later be needed to write the address | |
27128 | table. */ | |
27129 | psym_index_map cu_index_htab; | |
27130 | cu_index_htab.reserve (dwarf2_per_objfile->n_comp_units); | |
27131 | ||
27132 | /* The CU list is already sorted, so we don't need to do additional | |
27133 | work here. Also, the debug_types entries do not appear in | |
27134 | all_comp_units, but only in their own hash table. */ | |
27135 | ||
ed2dc618 SM |
27136 | std::unordered_set<partial_symbol *> psyms_seen |
27137 | (psyms_seen_size (dwarf2_per_objfile)); | |
bc8f2430 | 27138 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd | 27139 | { |
3e43a32a MS |
27140 | struct dwarf2_per_cu_data *per_cu |
27141 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 27142 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 27143 | |
92fac807 JK |
27144 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
27145 | It may be referenced from a local scope but in such case it does not | |
27146 | need to be present in .gdb_index. */ | |
27147 | if (psymtab == NULL) | |
27148 | continue; | |
27149 | ||
95554aad | 27150 | if (psymtab->user == NULL) |
bc8f2430 JK |
27151 | recursively_write_psymbols (objfile, psymtab, &symtab, |
27152 | psyms_seen, i); | |
9291a0cd | 27153 | |
bc8f2430 JK |
27154 | const auto insertpair = cu_index_htab.emplace (psymtab, i); |
27155 | gdb_assert (insertpair.second); | |
9291a0cd | 27156 | |
c2f134ac PA |
27157 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, |
27158 | to_underlying (per_cu->sect_off)); | |
27159 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, per_cu->length); | |
9291a0cd TT |
27160 | } |
27161 | ||
0a5429f6 | 27162 | /* Dump the address map. */ |
bc8f2430 JK |
27163 | data_buf addr_vec; |
27164 | write_address_map (objfile, addr_vec, cu_index_htab); | |
0a5429f6 | 27165 | |
1fd400ff | 27166 | /* Write out the .debug_type entries, if any. */ |
bc8f2430 | 27167 | data_buf types_cu_list; |
1fd400ff TT |
27168 | if (dwarf2_per_objfile->signatured_types) |
27169 | { | |
bc8f2430 JK |
27170 | signatured_type_index_data sig_data (types_cu_list, |
27171 | psyms_seen); | |
1fd400ff TT |
27172 | |
27173 | sig_data.objfile = objfile; | |
bc8f2430 | 27174 | sig_data.symtab = &symtab; |
1fd400ff TT |
27175 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
27176 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
27177 | write_one_signatured_type, &sig_data); | |
27178 | } | |
27179 | ||
156942c7 DE |
27180 | /* Now that we've processed all symbols we can shrink their cu_indices |
27181 | lists. */ | |
bc8f2430 | 27182 | uniquify_cu_indices (&symtab); |
156942c7 | 27183 | |
bc8f2430 JK |
27184 | data_buf symtab_vec, constant_pool; |
27185 | write_hash_table (&symtab, symtab_vec, constant_pool); | |
9291a0cd | 27186 | |
bc8f2430 JK |
27187 | data_buf contents; |
27188 | const offset_type size_of_contents = 6 * sizeof (offset_type); | |
27189 | offset_type total_len = size_of_contents; | |
9291a0cd TT |
27190 | |
27191 | /* The version number. */ | |
bc8f2430 | 27192 | contents.append_data (MAYBE_SWAP (8)); |
9291a0cd TT |
27193 | |
27194 | /* The offset of the CU list from the start of the file. */ | |
bc8f2430 JK |
27195 | contents.append_data (MAYBE_SWAP (total_len)); |
27196 | total_len += cu_list.size (); | |
9291a0cd | 27197 | |
1fd400ff | 27198 | /* The offset of the types CU list from the start of the file. */ |
bc8f2430 JK |
27199 | contents.append_data (MAYBE_SWAP (total_len)); |
27200 | total_len += types_cu_list.size (); | |
1fd400ff | 27201 | |
9291a0cd | 27202 | /* The offset of the address table from the start of the file. */ |
bc8f2430 JK |
27203 | contents.append_data (MAYBE_SWAP (total_len)); |
27204 | total_len += addr_vec.size (); | |
9291a0cd TT |
27205 | |
27206 | /* The offset of the symbol table from the start of the file. */ | |
bc8f2430 JK |
27207 | contents.append_data (MAYBE_SWAP (total_len)); |
27208 | total_len += symtab_vec.size (); | |
9291a0cd TT |
27209 | |
27210 | /* The offset of the constant pool from the start of the file. */ | |
bc8f2430 JK |
27211 | contents.append_data (MAYBE_SWAP (total_len)); |
27212 | total_len += constant_pool.size (); | |
9291a0cd | 27213 | |
bc8f2430 | 27214 | gdb_assert (contents.size () == size_of_contents); |
9291a0cd | 27215 | |
bc8f2430 JK |
27216 | contents.file_write (out_file); |
27217 | cu_list.file_write (out_file); | |
27218 | types_cu_list.file_write (out_file); | |
27219 | addr_vec.file_write (out_file); | |
27220 | symtab_vec.file_write (out_file); | |
27221 | constant_pool.file_write (out_file); | |
9291a0cd | 27222 | |
437afbb8 JK |
27223 | return total_len; |
27224 | } | |
27225 | ||
27226 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
27227 | static const gdb_byte dwarf5_gdb_augmentation[] = { 'G', 'D', 'B', 0 }; | |
27228 | ||
27229 | /* Write a new .debug_names section for OBJFILE into OUT_FILE, write | |
27230 | needed addition to .debug_str section to OUT_FILE_STR. Return how | |
27231 | many bytes were expected to be written into OUT_FILE. */ | |
27232 | ||
27233 | static size_t | |
ed2dc618 SM |
27234 | write_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
27235 | FILE *out_file, FILE *out_file_str) | |
437afbb8 | 27236 | { |
ed2dc618 SM |
27237 | const bool dwarf5_is_dwarf64 = check_dwarf64_offsets (dwarf2_per_objfile); |
27238 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
437afbb8 JK |
27239 | const enum bfd_endian dwarf5_byte_order |
27240 | = gdbarch_byte_order (get_objfile_arch (objfile)); | |
27241 | ||
27242 | /* The CU list is already sorted, so we don't need to do additional | |
27243 | work here. Also, the debug_types entries do not appear in | |
27244 | all_comp_units, but only in their own hash table. */ | |
27245 | data_buf cu_list; | |
ed2dc618 SM |
27246 | debug_names nametable (dwarf2_per_objfile, dwarf5_is_dwarf64, |
27247 | dwarf5_byte_order); | |
27248 | std::unordered_set<partial_symbol *> | |
27249 | psyms_seen (psyms_seen_size (dwarf2_per_objfile)); | |
437afbb8 JK |
27250 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
27251 | { | |
27252 | const dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->all_comp_units[i]; | |
27253 | partial_symtab *psymtab = per_cu->v.psymtab; | |
27254 | ||
27255 | /* CU of a shared file from 'dwz -m' may be unused by this main | |
27256 | file. It may be referenced from a local scope but in such | |
27257 | case it does not need to be present in .debug_names. */ | |
27258 | if (psymtab == NULL) | |
27259 | continue; | |
27260 | ||
27261 | if (psymtab->user == NULL) | |
27262 | nametable.recursively_write_psymbols (objfile, psymtab, psyms_seen, i); | |
27263 | ||
8af5c486 | 27264 | cu_list.append_uint (nametable.dwarf5_offset_size (), dwarf5_byte_order, |
437afbb8 JK |
27265 | to_underlying (per_cu->sect_off)); |
27266 | } | |
437afbb8 | 27267 | |
8af5c486 | 27268 | /* Write out the .debug_type entries, if any. */ |
437afbb8 | 27269 | data_buf types_cu_list; |
8af5c486 | 27270 | if (dwarf2_per_objfile->signatured_types) |
437afbb8 | 27271 | { |
8af5c486 JK |
27272 | debug_names::write_one_signatured_type_data sig_data (nametable, |
27273 | signatured_type_index_data (types_cu_list, psyms_seen)); | |
437afbb8 | 27274 | |
8af5c486 JK |
27275 | sig_data.info.objfile = objfile; |
27276 | /* It is used only for gdb_index. */ | |
27277 | sig_data.info.symtab = nullptr; | |
27278 | sig_data.info.cu_index = 0; | |
27279 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
27280 | debug_names::write_one_signatured_type, | |
27281 | &sig_data); | |
437afbb8 JK |
27282 | } |
27283 | ||
8af5c486 JK |
27284 | nametable.build (); |
27285 | ||
27286 | /* No addr_vec - DWARF-5 uses .debug_aranges generated by GCC. */ | |
27287 | ||
437afbb8 JK |
27288 | const offset_type bytes_of_header |
27289 | = ((dwarf5_is_dwarf64 ? 12 : 4) | |
27290 | + 2 + 2 + 7 * 4 | |
27291 | + sizeof (dwarf5_gdb_augmentation)); | |
27292 | size_t expected_bytes = 0; | |
27293 | expected_bytes += bytes_of_header; | |
27294 | expected_bytes += cu_list.size (); | |
27295 | expected_bytes += types_cu_list.size (); | |
27296 | expected_bytes += nametable.bytes (); | |
27297 | data_buf header; | |
27298 | ||
27299 | if (!dwarf5_is_dwarf64) | |
27300 | { | |
27301 | const uint64_t size64 = expected_bytes - 4; | |
27302 | gdb_assert (size64 < 0xfffffff0); | |
27303 | header.append_uint (4, dwarf5_byte_order, size64); | |
27304 | } | |
27305 | else | |
27306 | { | |
27307 | header.append_uint (4, dwarf5_byte_order, 0xffffffff); | |
27308 | header.append_uint (8, dwarf5_byte_order, expected_bytes - 12); | |
27309 | } | |
27310 | ||
27311 | /* The version number. */ | |
27312 | header.append_uint (2, dwarf5_byte_order, 5); | |
27313 | ||
27314 | /* Padding. */ | |
27315 | header.append_uint (2, dwarf5_byte_order, 0); | |
27316 | ||
27317 | /* comp_unit_count - The number of CUs in the CU list. */ | |
27318 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_comp_units); | |
27319 | ||
27320 | /* local_type_unit_count - The number of TUs in the local TU | |
27321 | list. */ | |
27322 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_type_units); | |
27323 | ||
27324 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
27325 | list. */ | |
27326 | header.append_uint (4, dwarf5_byte_order, 0); | |
27327 | ||
27328 | /* bucket_count - The number of hash buckets in the hash lookup | |
27329 | table. */ | |
27330 | header.append_uint (4, dwarf5_byte_order, nametable.bucket_count ()); | |
27331 | ||
27332 | /* name_count - The number of unique names in the index. */ | |
27333 | header.append_uint (4, dwarf5_byte_order, nametable.name_count ()); | |
27334 | ||
27335 | /* abbrev_table_size - The size in bytes of the abbreviations | |
27336 | table. */ | |
27337 | header.append_uint (4, dwarf5_byte_order, nametable.abbrev_table_bytes ()); | |
27338 | ||
27339 | /* augmentation_string_size - The size in bytes of the augmentation | |
27340 | string. This value is rounded up to a multiple of 4. */ | |
27341 | static_assert (sizeof (dwarf5_gdb_augmentation) % 4 == 0, ""); | |
27342 | header.append_uint (4, dwarf5_byte_order, sizeof (dwarf5_gdb_augmentation)); | |
27343 | header.append_data (dwarf5_gdb_augmentation); | |
27344 | ||
27345 | gdb_assert (header.size () == bytes_of_header); | |
27346 | ||
27347 | header.file_write (out_file); | |
27348 | cu_list.file_write (out_file); | |
27349 | types_cu_list.file_write (out_file); | |
27350 | nametable.file_write (out_file, out_file_str); | |
27351 | ||
27352 | return expected_bytes; | |
27353 | } | |
27354 | ||
27355 | /* Assert that FILE's size is EXPECTED_SIZE. Assumes file's seek | |
27356 | position is at the end of the file. */ | |
27357 | ||
27358 | static void | |
27359 | assert_file_size (FILE *file, const char *filename, size_t expected_size) | |
27360 | { | |
27361 | const auto file_size = ftell (file); | |
27362 | if (file_size == -1) | |
27363 | error (_("Can't get `%s' size"), filename); | |
27364 | gdb_assert (file_size == expected_size); | |
27365 | } | |
27366 | ||
437afbb8 JK |
27367 | /* Create an index file for OBJFILE in the directory DIR. */ |
27368 | ||
27369 | static void | |
ed2dc618 SM |
27370 | write_psymtabs_to_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
27371 | const char *dir, | |
437afbb8 JK |
27372 | dw_index_kind index_kind) |
27373 | { | |
ed2dc618 SM |
27374 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
27375 | ||
437afbb8 JK |
27376 | if (dwarf2_per_objfile->using_index) |
27377 | error (_("Cannot use an index to create the index")); | |
27378 | ||
27379 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) | |
27380 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
27381 | ||
27382 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) | |
27383 | return; | |
27384 | ||
27385 | struct stat st; | |
27386 | if (stat (objfile_name (objfile), &st) < 0) | |
27387 | perror_with_name (objfile_name (objfile)); | |
27388 | ||
27389 | std::string filename (std::string (dir) + SLASH_STRING | |
27390 | + lbasename (objfile_name (objfile)) | |
27391 | + (index_kind == dw_index_kind::DEBUG_NAMES | |
27392 | ? INDEX5_SUFFIX : INDEX4_SUFFIX)); | |
27393 | ||
27394 | FILE *out_file = gdb_fopen_cloexec (filename.c_str (), "wb").release (); | |
27395 | if (!out_file) | |
27396 | error (_("Can't open `%s' for writing"), filename.c_str ()); | |
27397 | ||
27398 | /* Order matters here; we want FILE to be closed before FILENAME is | |
27399 | unlinked, because on MS-Windows one cannot delete a file that is | |
27400 | still open. (Don't call anything here that might throw until | |
27401 | file_closer is created.) */ | |
27402 | gdb::unlinker unlink_file (filename.c_str ()); | |
27403 | gdb_file_up close_out_file (out_file); | |
27404 | ||
27405 | if (index_kind == dw_index_kind::DEBUG_NAMES) | |
27406 | { | |
27407 | std::string filename_str (std::string (dir) + SLASH_STRING | |
27408 | + lbasename (objfile_name (objfile)) | |
27409 | + DEBUG_STR_SUFFIX); | |
27410 | FILE *out_file_str | |
27411 | = gdb_fopen_cloexec (filename_str.c_str (), "wb").release (); | |
27412 | if (!out_file_str) | |
27413 | error (_("Can't open `%s' for writing"), filename_str.c_str ()); | |
27414 | gdb::unlinker unlink_file_str (filename_str.c_str ()); | |
27415 | gdb_file_up close_out_file_str (out_file_str); | |
27416 | ||
27417 | const size_t total_len | |
ed2dc618 | 27418 | = write_debug_names (dwarf2_per_objfile, out_file, out_file_str); |
437afbb8 JK |
27419 | assert_file_size (out_file, filename.c_str (), total_len); |
27420 | ||
27421 | /* We want to keep the file .debug_str file too. */ | |
27422 | unlink_file_str.keep (); | |
27423 | } | |
27424 | else | |
27425 | { | |
27426 | const size_t total_len | |
ed2dc618 | 27427 | = write_gdbindex (dwarf2_per_objfile, out_file); |
437afbb8 JK |
27428 | assert_file_size (out_file, filename.c_str (), total_len); |
27429 | } | |
27430 | ||
bef155c3 TT |
27431 | /* We want to keep the file. */ |
27432 | unlink_file.keep (); | |
9291a0cd TT |
27433 | } |
27434 | ||
90476074 TT |
27435 | /* Implementation of the `save gdb-index' command. |
27436 | ||
437afbb8 JK |
27437 | Note that the .gdb_index file format used by this command is |
27438 | documented in the GDB manual. Any changes here must be documented | |
27439 | there. */ | |
11570e71 | 27440 | |
9291a0cd | 27441 | static void |
8384c356 | 27442 | save_gdb_index_command (const char *arg, int from_tty) |
9291a0cd TT |
27443 | { |
27444 | struct objfile *objfile; | |
437afbb8 JK |
27445 | const char dwarf5space[] = "-dwarf-5 "; |
27446 | dw_index_kind index_kind = dw_index_kind::GDB_INDEX; | |
27447 | ||
27448 | if (!arg) | |
27449 | arg = ""; | |
27450 | ||
27451 | arg = skip_spaces (arg); | |
27452 | if (strncmp (arg, dwarf5space, strlen (dwarf5space)) == 0) | |
27453 | { | |
27454 | index_kind = dw_index_kind::DEBUG_NAMES; | |
27455 | arg += strlen (dwarf5space); | |
27456 | arg = skip_spaces (arg); | |
27457 | } | |
9291a0cd | 27458 | |
437afbb8 JK |
27459 | if (!*arg) |
27460 | error (_("usage: save gdb-index [-dwarf-5] DIRECTORY")); | |
9291a0cd TT |
27461 | |
27462 | ALL_OBJFILES (objfile) | |
27463 | { | |
27464 | struct stat st; | |
27465 | ||
27466 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 27467 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
27468 | continue; |
27469 | ||
ed2dc618 SM |
27470 | struct dwarf2_per_objfile *dwarf2_per_objfile |
27471 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 27472 | |
ed2dc618 SM |
27473 | if (dwarf2_per_objfile != NULL) |
27474 | { | |
492d29ea | 27475 | TRY |
9291a0cd | 27476 | { |
ed2dc618 | 27477 | write_psymtabs_to_index (dwarf2_per_objfile, arg, index_kind); |
9291a0cd | 27478 | } |
492d29ea PA |
27479 | CATCH (except, RETURN_MASK_ERROR) |
27480 | { | |
27481 | exception_fprintf (gdb_stderr, except, | |
27482 | _("Error while writing index for `%s': "), | |
27483 | objfile_name (objfile)); | |
27484 | } | |
27485 | END_CATCH | |
9291a0cd | 27486 | } |
ed2dc618 | 27487 | |
9291a0cd | 27488 | } |
dce234bc PP |
27489 | } |
27490 | ||
9291a0cd TT |
27491 | \f |
27492 | ||
b4f54984 | 27493 | int dwarf_always_disassemble; |
9eae7c52 TT |
27494 | |
27495 | static void | |
b4f54984 DE |
27496 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
27497 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 27498 | { |
3e43a32a MS |
27499 | fprintf_filtered (file, |
27500 | _("Whether to always disassemble " | |
27501 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
27502 | value); |
27503 | } | |
27504 | ||
900e11f9 JK |
27505 | static void |
27506 | show_check_physname (struct ui_file *file, int from_tty, | |
27507 | struct cmd_list_element *c, const char *value) | |
27508 | { | |
27509 | fprintf_filtered (file, | |
27510 | _("Whether to check \"physname\" is %s.\n"), | |
27511 | value); | |
27512 | } | |
27513 | ||
6502dd73 DJ |
27514 | void |
27515 | _initialize_dwarf2_read (void) | |
27516 | { | |
96d19272 JK |
27517 | struct cmd_list_element *c; |
27518 | ||
fc8e7e75 | 27519 | dwarf2_objfile_data_key = register_objfile_data (); |
ae038cb0 | 27520 | |
b4f54984 DE |
27521 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
27522 | Set DWARF specific variables.\n\ | |
27523 | Configure DWARF variables such as the cache size"), | |
27524 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
27525 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
27526 | ||
b4f54984 DE |
27527 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
27528 | Show DWARF specific variables\n\ | |
27529 | Show DWARF variables such as the cache size"), | |
27530 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
27531 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
27532 | ||
27533 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
27534 | &dwarf_max_cache_age, _("\ |
27535 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
27536 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
27537 | A higher limit means that cached compilation units will be stored\n\ |
27538 | in memory longer, and more total memory will be used. Zero disables\n\ | |
27539 | caching, which can slow down startup."), | |
2c5b56ce | 27540 | NULL, |
b4f54984 DE |
27541 | show_dwarf_max_cache_age, |
27542 | &set_dwarf_cmdlist, | |
27543 | &show_dwarf_cmdlist); | |
d97bc12b | 27544 | |
9eae7c52 | 27545 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 27546 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
27547 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
27548 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
27549 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
27550 | syntax. When disabled, expressions will be printed in a more\n\ | |
27551 | conversational style, when possible."), | |
27552 | NULL, | |
b4f54984 DE |
27553 | show_dwarf_always_disassemble, |
27554 | &set_dwarf_cmdlist, | |
27555 | &show_dwarf_cmdlist); | |
27556 | ||
27557 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
27558 | Set debugging of the DWARF reader."), _("\ | |
27559 | Show debugging of the DWARF reader."), _("\ | |
27560 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
27561 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
27562 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
27563 | NULL, |
27564 | NULL, | |
27565 | &setdebuglist, &showdebuglist); | |
27566 | ||
b4f54984 DE |
27567 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
27568 | Set debugging of the DWARF DIE reader."), _("\ | |
27569 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
27570 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
27571 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
27572 | NULL, |
27573 | NULL, | |
27574 | &setdebuglist, &showdebuglist); | |
9291a0cd | 27575 | |
27e0867f DE |
27576 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
27577 | Set debugging of the dwarf line reader."), _("\ | |
27578 | Show debugging of the dwarf line reader."), _("\ | |
27579 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
27580 | A value of 1 (one) provides basic information.\n\ | |
27581 | A value greater than 1 provides more verbose information."), | |
27582 | NULL, | |
27583 | NULL, | |
27584 | &setdebuglist, &showdebuglist); | |
27585 | ||
900e11f9 JK |
27586 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
27587 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
27588 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
27589 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
27590 | the demangler."), | |
27591 | NULL, show_check_physname, | |
27592 | &setdebuglist, &showdebuglist); | |
27593 | ||
e615022a DE |
27594 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
27595 | no_class, &use_deprecated_index_sections, _("\ | |
27596 | Set whether to use deprecated gdb_index sections."), _("\ | |
27597 | Show whether to use deprecated gdb_index sections."), _("\ | |
27598 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
27599 | Normally they are ignored either because of a missing feature or\n\ | |
27600 | performance issue.\n\ | |
27601 | Warning: This option must be enabled before gdb reads the file."), | |
27602 | NULL, | |
27603 | NULL, | |
27604 | &setlist, &showlist); | |
27605 | ||
96d19272 | 27606 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 27607 | _("\ |
fc1a9d6e | 27608 | Save a gdb-index file.\n\ |
437afbb8 JK |
27609 | Usage: save gdb-index [-dwarf-5] DIRECTORY\n\ |
27610 | \n\ | |
27611 | No options create one file with .gdb-index extension for pre-DWARF-5\n\ | |
27612 | compatible .gdb_index section. With -dwarf-5 creates two files with\n\ | |
27613 | extension .debug_names and .debug_str for DWARF-5 .debug_names section."), | |
96d19272 JK |
27614 | &save_cmdlist); |
27615 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
27616 | |
27617 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27618 | &dwarf2_locexpr_funcs); | |
27619 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27620 | &dwarf2_loclist_funcs); | |
27621 | ||
27622 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27623 | &dwarf2_block_frame_base_locexpr_funcs); | |
27624 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27625 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
27626 | |
27627 | #if GDB_SELF_TEST | |
27628 | selftests::register_test ("dw2_expand_symtabs_matching", | |
27629 | selftests::dw2_expand_symtabs_matching::run_test); | |
27630 | #endif | |
6502dd73 | 27631 | } |