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> | |
89 | ||
73be47f5 DE |
90 | /* When == 1, print basic high level tracing messages. |
91 | When > 1, be more verbose. | |
b4f54984 DE |
92 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
93 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 94 | |
d97bc12b | 95 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 96 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 97 | |
27e0867f DE |
98 | /* When non-zero, dump line number entries as they are read in. */ |
99 | static unsigned int dwarf_line_debug = 0; | |
100 | ||
900e11f9 JK |
101 | /* When non-zero, cross-check physname against demangler. */ |
102 | static int check_physname = 0; | |
103 | ||
481860b3 | 104 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 105 | static int use_deprecated_index_sections = 0; |
481860b3 | 106 | |
6502dd73 DJ |
107 | static const struct objfile_data *dwarf2_objfile_data_key; |
108 | ||
f1e6e072 TT |
109 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
110 | ||
111 | static int dwarf2_locexpr_index; | |
112 | static int dwarf2_loclist_index; | |
113 | static int dwarf2_locexpr_block_index; | |
114 | static int dwarf2_loclist_block_index; | |
115 | ||
73869dc2 DE |
116 | /* A descriptor for dwarf sections. |
117 | ||
118 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
119 | scanned. BUFFER, READIN are filled in later when the section is read. | |
120 | If the section contained compressed data then SIZE is updated to record | |
121 | the uncompressed size of the section. | |
122 | ||
123 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
124 | creating the concept of virtual sections contained within a real section. | |
125 | In DWP V2 the sections of the input DWO files are concatenated together | |
126 | into one section, but section offsets are kept relative to the original | |
127 | input section. | |
128 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
129 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
130 | describe the virtual section. */ | |
131 | ||
dce234bc PP |
132 | struct dwarf2_section_info |
133 | { | |
73869dc2 DE |
134 | union |
135 | { | |
e5aa3347 | 136 | /* If this is a real section, the bfd section. */ |
049412e3 | 137 | asection *section; |
73869dc2 | 138 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 139 | section. */ |
73869dc2 DE |
140 | struct dwarf2_section_info *containing_section; |
141 | } s; | |
19ac8c2e | 142 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 143 | const gdb_byte *buffer; |
73869dc2 | 144 | /* The size of the section, real or virtual. */ |
dce234bc | 145 | bfd_size_type size; |
73869dc2 DE |
146 | /* If this is a virtual section, the offset in the real section. |
147 | Only valid if is_virtual. */ | |
148 | bfd_size_type virtual_offset; | |
be391dca | 149 | /* True if we have tried to read this section. */ |
73869dc2 DE |
150 | char readin; |
151 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 152 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 153 | char is_virtual; |
dce234bc PP |
154 | }; |
155 | ||
8b70b953 TT |
156 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
157 | DEF_VEC_O (dwarf2_section_info_def); | |
158 | ||
9291a0cd TT |
159 | /* All offsets in the index are of this type. It must be |
160 | architecture-independent. */ | |
161 | typedef uint32_t offset_type; | |
162 | ||
163 | DEF_VEC_I (offset_type); | |
164 | ||
156942c7 DE |
165 | /* Ensure only legit values are used. */ |
166 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
167 | do { \ | |
168 | gdb_assert ((unsigned int) (value) <= 1); \ | |
169 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
170 | } while (0) | |
171 | ||
172 | /* Ensure only legit values are used. */ | |
173 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
174 | do { \ | |
175 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
176 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
177 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
178 | } while (0) | |
179 | ||
180 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
181 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
182 | do { \ | |
183 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
184 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
185 | } while (0) | |
186 | ||
3f563c84 PA |
187 | #if WORDS_BIGENDIAN |
188 | ||
189 | /* Convert VALUE between big- and little-endian. */ | |
190 | ||
191 | static offset_type | |
192 | byte_swap (offset_type value) | |
193 | { | |
194 | offset_type result; | |
195 | ||
196 | result = (value & 0xff) << 24; | |
197 | result |= (value & 0xff00) << 8; | |
198 | result |= (value & 0xff0000) >> 8; | |
199 | result |= (value & 0xff000000) >> 24; | |
200 | return result; | |
201 | } | |
202 | ||
203 | #define MAYBE_SWAP(V) byte_swap (V) | |
204 | ||
205 | #else | |
206 | #define MAYBE_SWAP(V) static_cast<offset_type> (V) | |
207 | #endif /* WORDS_BIGENDIAN */ | |
208 | ||
209 | /* An index into a (C++) symbol name component in a symbol name as | |
210 | recorded in the mapped_index's symbol table. For each C++ symbol | |
211 | in the symbol table, we record one entry for the start of each | |
212 | component in the symbol in a table of name components, and then | |
213 | sort the table, in order to be able to binary search symbol names, | |
214 | ignoring leading namespaces, both completion and regular look up. | |
215 | For example, for symbol "A::B::C", we'll have an entry that points | |
216 | to "A::B::C", another that points to "B::C", and another for "C". | |
217 | Note that function symbols in GDB index have no parameter | |
218 | information, just the function/method names. You can convert a | |
219 | name_component to a "const char *" using the | |
220 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
221 | ||
222 | struct name_component | |
223 | { | |
224 | /* Offset in the symbol name where the component starts. Stored as | |
225 | a (32-bit) offset instead of a pointer to save memory and improve | |
226 | locality on 64-bit architectures. */ | |
227 | offset_type name_offset; | |
228 | ||
229 | /* The symbol's index in the symbol and constant pool tables of a | |
230 | mapped_index. */ | |
231 | offset_type idx; | |
232 | }; | |
233 | ||
44ed8f3e PA |
234 | /* Base class containing bits shared by both .gdb_index and |
235 | .debug_name indexes. */ | |
236 | ||
237 | struct mapped_index_base | |
238 | { | |
239 | /* The name_component table (a sorted vector). See name_component's | |
240 | description above. */ | |
241 | std::vector<name_component> name_components; | |
242 | ||
243 | /* How NAME_COMPONENTS is sorted. */ | |
244 | enum case_sensitivity name_components_casing; | |
245 | ||
246 | /* Return the number of names in the symbol table. */ | |
247 | virtual size_t symbol_name_count () const = 0; | |
248 | ||
249 | /* Get the name of the symbol at IDX in the symbol table. */ | |
250 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
251 | ||
252 | /* Return whether the name at IDX in the symbol table should be | |
253 | ignored. */ | |
254 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
255 | { | |
256 | return false; | |
257 | } | |
258 | ||
259 | /* Build the symbol name component sorted vector, if we haven't | |
260 | yet. */ | |
261 | void build_name_components (); | |
262 | ||
263 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
264 | possible matches for LN_NO_PARAMS in the name component | |
265 | vector. */ | |
266 | std::pair<std::vector<name_component>::const_iterator, | |
267 | std::vector<name_component>::const_iterator> | |
268 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
269 | ||
270 | /* Prevent deleting/destroying via a base class pointer. */ | |
271 | protected: | |
272 | ~mapped_index_base() = default; | |
273 | }; | |
274 | ||
9291a0cd TT |
275 | /* A description of the mapped index. The file format is described in |
276 | a comment by the code that writes the index. */ | |
fc898b42 | 277 | struct mapped_index final : public mapped_index_base |
9291a0cd | 278 | { |
f00a2de2 PA |
279 | /* A slot/bucket in the symbol table hash. */ |
280 | struct symbol_table_slot | |
281 | { | |
282 | const offset_type name; | |
283 | const offset_type vec; | |
284 | }; | |
285 | ||
559a7a62 JK |
286 | /* Index data format version. */ |
287 | int version; | |
288 | ||
9291a0cd TT |
289 | /* The total length of the buffer. */ |
290 | off_t total_size; | |
b11b1f88 | 291 | |
f00a2de2 PA |
292 | /* The address table data. */ |
293 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 294 | |
3876f04e | 295 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 296 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 297 | |
9291a0cd TT |
298 | /* A pointer to the constant pool. */ |
299 | const char *constant_pool; | |
3f563c84 | 300 | |
44ed8f3e PA |
301 | bool symbol_name_slot_invalid (offset_type idx) const override |
302 | { | |
303 | const auto &bucket = this->symbol_table[idx]; | |
304 | return bucket.name == 0 && bucket.vec; | |
305 | } | |
5c58de74 | 306 | |
3f563c84 PA |
307 | /* Convenience method to get at the name of the symbol at IDX in the |
308 | symbol table. */ | |
44ed8f3e | 309 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 310 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 311 | |
44ed8f3e PA |
312 | size_t symbol_name_count () const override |
313 | { return this->symbol_table.size (); } | |
9291a0cd TT |
314 | }; |
315 | ||
927aa2e7 JK |
316 | /* A description of the mapped .debug_names. |
317 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 318 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 319 | { |
ed2dc618 SM |
320 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
321 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
322 | {} | |
323 | ||
324 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
325 | bfd_endian dwarf5_byte_order; |
326 | bool dwarf5_is_dwarf64; | |
327 | bool augmentation_is_gdb; | |
328 | uint8_t offset_size; | |
329 | uint32_t cu_count = 0; | |
330 | uint32_t tu_count, bucket_count, name_count; | |
331 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
332 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
333 | const gdb_byte *name_table_string_offs_reordered; | |
334 | const gdb_byte *name_table_entry_offs_reordered; | |
335 | const gdb_byte *entry_pool; | |
336 | ||
337 | struct index_val | |
338 | { | |
339 | ULONGEST dwarf_tag; | |
340 | struct attr | |
341 | { | |
342 | /* Attribute name DW_IDX_*. */ | |
343 | ULONGEST dw_idx; | |
344 | ||
345 | /* Attribute form DW_FORM_*. */ | |
346 | ULONGEST form; | |
347 | ||
348 | /* Value if FORM is DW_FORM_implicit_const. */ | |
349 | LONGEST implicit_const; | |
350 | }; | |
351 | std::vector<attr> attr_vec; | |
352 | }; | |
353 | ||
354 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
355 | ||
356 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
357 | |
358 | /* Implementation of the mapped_index_base virtual interface, for | |
359 | the name_components cache. */ | |
360 | ||
361 | const char *symbol_name_at (offset_type idx) const override | |
362 | { return namei_to_name (idx); } | |
363 | ||
364 | size_t symbol_name_count () const override | |
365 | { return this->name_count; } | |
927aa2e7 JK |
366 | }; |
367 | ||
95554aad TT |
368 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
369 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
370 | ||
52059ffd TT |
371 | struct tu_stats |
372 | { | |
373 | int nr_uniq_abbrev_tables; | |
374 | int nr_symtabs; | |
375 | int nr_symtab_sharers; | |
376 | int nr_stmt_less_type_units; | |
377 | int nr_all_type_units_reallocs; | |
378 | }; | |
379 | ||
9cdd5dbd DE |
380 | /* Collection of data recorded per objfile. |
381 | This hangs off of dwarf2_objfile_data_key. */ | |
382 | ||
6502dd73 DJ |
383 | struct dwarf2_per_objfile |
384 | { | |
330cdd98 PA |
385 | /* Construct a dwarf2_per_objfile for OBJFILE. NAMES points to the |
386 | dwarf2 section names, or is NULL if the standard ELF names are | |
387 | used. */ | |
388 | dwarf2_per_objfile (struct objfile *objfile, | |
389 | const dwarf2_debug_sections *names); | |
ae038cb0 | 390 | |
330cdd98 PA |
391 | ~dwarf2_per_objfile (); |
392 | ||
d6541620 | 393 | DISABLE_COPY_AND_ASSIGN (dwarf2_per_objfile); |
330cdd98 PA |
394 | |
395 | /* Free all cached compilation units. */ | |
396 | void free_cached_comp_units (); | |
397 | private: | |
398 | /* This function is mapped across the sections and remembers the | |
399 | offset and size of each of the debugging sections we are | |
400 | interested in. */ | |
401 | void locate_sections (bfd *abfd, asection *sectp, | |
402 | const dwarf2_debug_sections &names); | |
403 | ||
404 | public: | |
405 | dwarf2_section_info info {}; | |
406 | dwarf2_section_info abbrev {}; | |
407 | dwarf2_section_info line {}; | |
408 | dwarf2_section_info loc {}; | |
409 | dwarf2_section_info loclists {}; | |
410 | dwarf2_section_info macinfo {}; | |
411 | dwarf2_section_info macro {}; | |
412 | dwarf2_section_info str {}; | |
413 | dwarf2_section_info line_str {}; | |
414 | dwarf2_section_info ranges {}; | |
415 | dwarf2_section_info rnglists {}; | |
416 | dwarf2_section_info addr {}; | |
417 | dwarf2_section_info frame {}; | |
418 | dwarf2_section_info eh_frame {}; | |
419 | dwarf2_section_info gdb_index {}; | |
927aa2e7 JK |
420 | dwarf2_section_info debug_names {}; |
421 | dwarf2_section_info debug_aranges {}; | |
330cdd98 PA |
422 | |
423 | VEC (dwarf2_section_info_def) *types = NULL; | |
8b70b953 | 424 | |
be391dca | 425 | /* Back link. */ |
330cdd98 | 426 | struct objfile *objfile = NULL; |
be391dca | 427 | |
d467dd73 | 428 | /* Table of all the compilation units. This is used to locate |
10b3939b | 429 | the target compilation unit of a particular reference. */ |
330cdd98 | 430 | struct dwarf2_per_cu_data **all_comp_units = NULL; |
ae038cb0 DJ |
431 | |
432 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
330cdd98 | 433 | int n_comp_units = 0; |
ae038cb0 | 434 | |
1fd400ff | 435 | /* The number of .debug_types-related CUs. */ |
330cdd98 | 436 | int n_type_units = 0; |
1fd400ff | 437 | |
6aa5f3a6 DE |
438 | /* The number of elements allocated in all_type_units. |
439 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
330cdd98 | 440 | int n_allocated_type_units = 0; |
6aa5f3a6 | 441 | |
a2ce51a0 DE |
442 | /* The .debug_types-related CUs (TUs). |
443 | This is stored in malloc space because we may realloc it. */ | |
330cdd98 | 444 | struct signatured_type **all_type_units = NULL; |
1fd400ff | 445 | |
f4dc4d17 DE |
446 | /* Table of struct type_unit_group objects. |
447 | The hash key is the DW_AT_stmt_list value. */ | |
330cdd98 | 448 | htab_t type_unit_groups {}; |
72dca2f5 | 449 | |
348e048f DE |
450 | /* A table mapping .debug_types signatures to its signatured_type entry. |
451 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
330cdd98 | 452 | htab_t signatured_types {}; |
348e048f | 453 | |
f4dc4d17 DE |
454 | /* Type unit statistics, to see how well the scaling improvements |
455 | are doing. */ | |
330cdd98 | 456 | struct tu_stats tu_stats {}; |
f4dc4d17 DE |
457 | |
458 | /* A chain of compilation units that are currently read in, so that | |
459 | they can be freed later. */ | |
330cdd98 | 460 | dwarf2_per_cu_data *read_in_chain = NULL; |
f4dc4d17 | 461 | |
3019eac3 DE |
462 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
463 | This is NULL if the table hasn't been allocated yet. */ | |
330cdd98 | 464 | htab_t dwo_files {}; |
3019eac3 | 465 | |
330cdd98 PA |
466 | /* True if we've checked for whether there is a DWP file. */ |
467 | bool dwp_checked = false; | |
80626a55 DE |
468 | |
469 | /* The DWP file if there is one, or NULL. */ | |
330cdd98 | 470 | struct dwp_file *dwp_file = NULL; |
80626a55 | 471 | |
36586728 TT |
472 | /* The shared '.dwz' file, if one exists. This is used when the |
473 | original data was compressed using 'dwz -m'. */ | |
330cdd98 | 474 | struct dwz_file *dwz_file = NULL; |
36586728 | 475 | |
330cdd98 | 476 | /* A flag indicating whether this objfile has a section loaded at a |
72dca2f5 | 477 | VMA of 0. */ |
330cdd98 | 478 | bool has_section_at_zero = false; |
9291a0cd | 479 | |
ae2de4f8 DE |
480 | /* True if we are using the mapped index, |
481 | or we are faking it for OBJF_READNOW's sake. */ | |
330cdd98 | 482 | bool using_index = false; |
9291a0cd | 483 | |
ae2de4f8 | 484 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
330cdd98 | 485 | mapped_index *index_table = NULL; |
98bfdba5 | 486 | |
927aa2e7 JK |
487 | /* The mapped index, or NULL if .debug_names is missing or not being used. */ |
488 | std::unique_ptr<mapped_debug_names> debug_names_table; | |
489 | ||
7b9f3c50 | 490 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
491 | TUs typically share line table entries with a CU, so we maintain a |
492 | separate table of all line table entries to support the sharing. | |
493 | Note that while there can be way more TUs than CUs, we've already | |
494 | sorted all the TUs into "type unit groups", grouped by their | |
495 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
496 | CU and its associated TU group if there is one. */ | |
330cdd98 | 497 | htab_t quick_file_names_table {}; |
7b9f3c50 | 498 | |
98bfdba5 PA |
499 | /* Set during partial symbol reading, to prevent queueing of full |
500 | symbols. */ | |
330cdd98 | 501 | bool reading_partial_symbols = false; |
673bfd45 | 502 | |
dee91e82 | 503 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 504 | This is NULL if not allocated yet. |
02142a6c | 505 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
330cdd98 | 506 | htab_t die_type_hash {}; |
95554aad TT |
507 | |
508 | /* The CUs we recently read. */ | |
330cdd98 | 509 | VEC (dwarf2_per_cu_ptr) *just_read_cus = NULL; |
527f3840 JK |
510 | |
511 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
330cdd98 | 512 | htab_t line_header_hash {}; |
bbf2f4df PA |
513 | |
514 | /* Table containing all filenames. This is an optional because the | |
515 | table is lazily constructed on first access. */ | |
516 | gdb::optional<filename_seen_cache> filenames_cache; | |
6502dd73 DJ |
517 | }; |
518 | ||
ed2dc618 SM |
519 | /* Get the dwarf2_per_objfile associated to OBJFILE. */ |
520 | ||
521 | struct dwarf2_per_objfile * | |
522 | get_dwarf2_per_objfile (struct objfile *objfile) | |
523 | { | |
524 | return ((struct dwarf2_per_objfile *) | |
525 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
526 | } | |
527 | ||
528 | /* Set the dwarf2_per_objfile associated to OBJFILE. */ | |
529 | ||
530 | void | |
531 | set_dwarf2_per_objfile (struct objfile *objfile, | |
532 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
533 | { | |
534 | gdb_assert (get_dwarf2_per_objfile (objfile) == NULL); | |
535 | set_objfile_data (objfile, dwarf2_objfile_data_key, dwarf2_per_objfile); | |
536 | } | |
c906108c | 537 | |
251d32d9 | 538 | /* Default names of the debugging sections. */ |
c906108c | 539 | |
233a11ab CS |
540 | /* Note that if the debugging section has been compressed, it might |
541 | have a name like .zdebug_info. */ | |
542 | ||
9cdd5dbd DE |
543 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
544 | { | |
251d32d9 TG |
545 | { ".debug_info", ".zdebug_info" }, |
546 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
547 | { ".debug_line", ".zdebug_line" }, | |
548 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 549 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 550 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 551 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 552 | { ".debug_str", ".zdebug_str" }, |
43988095 | 553 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 554 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 555 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 556 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 557 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
558 | { ".debug_frame", ".zdebug_frame" }, |
559 | { ".eh_frame", NULL }, | |
24d3216f | 560 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
561 | { ".debug_names", ".zdebug_names" }, |
562 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 563 | 23 |
251d32d9 | 564 | }; |
c906108c | 565 | |
80626a55 | 566 | /* List of DWO/DWP sections. */ |
3019eac3 | 567 | |
80626a55 | 568 | static const struct dwop_section_names |
3019eac3 DE |
569 | { |
570 | struct dwarf2_section_names abbrev_dwo; | |
571 | struct dwarf2_section_names info_dwo; | |
572 | struct dwarf2_section_names line_dwo; | |
573 | struct dwarf2_section_names loc_dwo; | |
43988095 | 574 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
575 | struct dwarf2_section_names macinfo_dwo; |
576 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
577 | struct dwarf2_section_names str_dwo; |
578 | struct dwarf2_section_names str_offsets_dwo; | |
579 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
580 | struct dwarf2_section_names cu_index; |
581 | struct dwarf2_section_names tu_index; | |
3019eac3 | 582 | } |
80626a55 | 583 | dwop_section_names = |
3019eac3 DE |
584 | { |
585 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
586 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
587 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
588 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 589 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
590 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
591 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
592 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
593 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
594 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
595 | { ".debug_cu_index", ".zdebug_cu_index" }, |
596 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
597 | }; |
598 | ||
c906108c SS |
599 | /* local data types */ |
600 | ||
107d2387 AC |
601 | /* The data in a compilation unit header, after target2host |
602 | translation, looks like this. */ | |
c906108c | 603 | struct comp_unit_head |
a738430d | 604 | { |
c764a876 | 605 | unsigned int length; |
a738430d | 606 | short version; |
a738430d MK |
607 | unsigned char addr_size; |
608 | unsigned char signed_addr_p; | |
9c541725 | 609 | sect_offset abbrev_sect_off; |
57349743 | 610 | |
a738430d MK |
611 | /* Size of file offsets; either 4 or 8. */ |
612 | unsigned int offset_size; | |
57349743 | 613 | |
a738430d MK |
614 | /* Size of the length field; either 4 or 12. */ |
615 | unsigned int initial_length_size; | |
57349743 | 616 | |
43988095 JK |
617 | enum dwarf_unit_type unit_type; |
618 | ||
a738430d MK |
619 | /* Offset to the first byte of this compilation unit header in the |
620 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 621 | sect_offset sect_off; |
57349743 | 622 | |
d00adf39 DE |
623 | /* Offset to first die in this cu from the start of the cu. |
624 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 625 | cu_offset first_die_cu_offset; |
43988095 JK |
626 | |
627 | /* 64-bit signature of this type unit - it is valid only for | |
628 | UNIT_TYPE DW_UT_type. */ | |
629 | ULONGEST signature; | |
630 | ||
631 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 632 | cu_offset type_cu_offset_in_tu; |
a738430d | 633 | }; |
c906108c | 634 | |
3da10d80 KS |
635 | /* Type used for delaying computation of method physnames. |
636 | See comments for compute_delayed_physnames. */ | |
637 | struct delayed_method_info | |
638 | { | |
639 | /* The type to which the method is attached, i.e., its parent class. */ | |
640 | struct type *type; | |
641 | ||
642 | /* The index of the method in the type's function fieldlists. */ | |
643 | int fnfield_index; | |
644 | ||
645 | /* The index of the method in the fieldlist. */ | |
646 | int index; | |
647 | ||
648 | /* The name of the DIE. */ | |
649 | const char *name; | |
650 | ||
651 | /* The DIE associated with this method. */ | |
652 | struct die_info *die; | |
653 | }; | |
654 | ||
e7c27a73 DJ |
655 | /* Internal state when decoding a particular compilation unit. */ |
656 | struct dwarf2_cu | |
657 | { | |
fcd3b13d SM |
658 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
659 | ~dwarf2_cu (); | |
660 | ||
661 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
662 | ||
d00adf39 | 663 | /* The header of the compilation unit. */ |
fcd3b13d | 664 | struct comp_unit_head header {}; |
e142c38c | 665 | |
d00adf39 | 666 | /* Base address of this compilation unit. */ |
fcd3b13d | 667 | CORE_ADDR base_address = 0; |
d00adf39 DE |
668 | |
669 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 670 | int base_known = 0; |
d00adf39 | 671 | |
e142c38c | 672 | /* The language we are debugging. */ |
fcd3b13d SM |
673 | enum language language = language_unknown; |
674 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 675 | |
fcd3b13d | 676 | const char *producer = nullptr; |
b0f35d58 | 677 | |
e142c38c DJ |
678 | /* The generic symbol table building routines have separate lists for |
679 | file scope symbols and all all other scopes (local scopes). So | |
680 | we need to select the right one to pass to add_symbol_to_list(). | |
681 | We do it by keeping a pointer to the correct list in list_in_scope. | |
682 | ||
683 | FIXME: The original dwarf code just treated the file scope as the | |
684 | first local scope, and all other local scopes as nested local | |
685 | scopes, and worked fine. Check to see if we really need to | |
686 | distinguish these in buildsym.c. */ | |
fcd3b13d | 687 | struct pending **list_in_scope = nullptr; |
e142c38c | 688 | |
b64f50a1 JK |
689 | /* Hash table holding all the loaded partial DIEs |
690 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 691 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
692 | |
693 | /* Storage for things with the same lifetime as this read-in compilation | |
694 | unit, including partial DIEs. */ | |
fcd3b13d | 695 | auto_obstack comp_unit_obstack; |
72bf9492 | 696 | |
ae038cb0 DJ |
697 | /* When multiple dwarf2_cu structures are living in memory, this field |
698 | chains them all together, so that they can be released efficiently. | |
699 | We will probably also want a generation counter so that most-recently-used | |
700 | compilation units are cached... */ | |
fcd3b13d | 701 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 702 | |
69d751e3 | 703 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
704 | struct dwarf2_per_cu_data *per_cu; |
705 | ||
706 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 707 | int last_used = 0; |
ae038cb0 | 708 | |
b64f50a1 JK |
709 | /* A hash table of DIE cu_offset for following references with |
710 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 711 | htab_t die_hash = nullptr; |
10b3939b DJ |
712 | |
713 | /* Full DIEs if read in. */ | |
fcd3b13d | 714 | struct die_info *dies = nullptr; |
10b3939b DJ |
715 | |
716 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
717 | units referenced by this one. Only set during full symbol processing; | |
718 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 719 | htab_t dependencies = nullptr; |
10b3939b | 720 | |
cb1df416 | 721 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 722 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
723 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
724 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
725 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
726 | to the line header as long as this DIE is being processed. See | |
727 | process_die_scope. */ | |
fcd3b13d | 728 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 729 | |
3da10d80 KS |
730 | /* A list of methods which need to have physnames computed |
731 | after all type information has been read. */ | |
c89b44cd | 732 | std::vector<delayed_method_info> method_list; |
3da10d80 | 733 | |
96408a79 | 734 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 735 | htab_t call_site_htab = nullptr; |
96408a79 | 736 | |
034e5797 DE |
737 | /* Non-NULL if this CU came from a DWO file. |
738 | There is an invariant here that is important to remember: | |
739 | Except for attributes copied from the top level DIE in the "main" | |
740 | (or "stub") file in preparation for reading the DWO file | |
741 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
742 | Either there isn't a DWO file (in which case this is NULL and the point | |
743 | is moot), or there is and either we're not going to read it (in which | |
744 | case this is NULL) or there is and we are reading it (in which case this | |
745 | is non-NULL). */ | |
fcd3b13d | 746 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
747 | |
748 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
749 | (zero is a valid value though). | |
1dbab08b | 750 | Note this value comes from the Fission stub CU/TU's DIE. */ |
fcd3b13d | 751 | ULONGEST addr_base = 0; |
3019eac3 | 752 | |
2e3cf129 DE |
753 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
754 | (zero is a valid value though). | |
1dbab08b | 755 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 756 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
757 | be used without needing to know whether DWO files are in use or not. |
758 | N.B. This does not apply to DW_AT_ranges appearing in | |
759 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
760 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
761 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
762 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 763 | ULONGEST ranges_base = 0; |
2e3cf129 | 764 | |
ae038cb0 DJ |
765 | /* Mark used when releasing cached dies. */ |
766 | unsigned int mark : 1; | |
767 | ||
8be455d7 JK |
768 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
769 | This test is imperfect as there may exist optimized debug code not using | |
770 | any location list and still facing inlining issues if handled as | |
771 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 772 | unsigned int has_loclist : 1; |
ba919b58 | 773 | |
1b80a9fa JK |
774 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
775 | if all the producer_is_* fields are valid. This information is cached | |
776 | because profiling CU expansion showed excessive time spent in | |
777 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
778 | unsigned int checked_producer : 1; |
779 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 780 | unsigned int producer_is_gcc_lt_4_3 : 1; |
5230b05a | 781 | unsigned int producer_is_icc_lt_14 : 1; |
4d4ec4e5 TT |
782 | |
783 | /* When set, the file that we're processing is known to have | |
784 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
785 | this information, but later versions do. */ | |
786 | ||
787 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
788 | }; |
789 | ||
10b3939b DJ |
790 | /* Persistent data held for a compilation unit, even when not |
791 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 792 | read_symtab_private field of the psymtab. */ |
10b3939b | 793 | |
ae038cb0 DJ |
794 | struct dwarf2_per_cu_data |
795 | { | |
36586728 | 796 | /* The start offset and length of this compilation unit. |
45452591 | 797 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
798 | initial_length_size. |
799 | If the DIE refers to a DWO file, this is always of the original die, | |
800 | not the DWO file. */ | |
9c541725 | 801 | sect_offset sect_off; |
36586728 | 802 | unsigned int length; |
ae038cb0 | 803 | |
43988095 JK |
804 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
805 | short dwarf_version; | |
806 | ||
ae038cb0 DJ |
807 | /* Flag indicating this compilation unit will be read in before |
808 | any of the current compilation units are processed. */ | |
c764a876 | 809 | unsigned int queued : 1; |
ae038cb0 | 810 | |
0d99eb77 DE |
811 | /* This flag will be set when reading partial DIEs if we need to load |
812 | absolutely all DIEs for this compilation unit, instead of just the ones | |
813 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
814 | hash table and don't find it. */ |
815 | unsigned int load_all_dies : 1; | |
816 | ||
0186c6a7 DE |
817 | /* Non-zero if this CU is from .debug_types. |
818 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
819 | this is non-zero. */ | |
3019eac3 DE |
820 | unsigned int is_debug_types : 1; |
821 | ||
36586728 TT |
822 | /* Non-zero if this CU is from the .dwz file. */ |
823 | unsigned int is_dwz : 1; | |
824 | ||
a2ce51a0 DE |
825 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
826 | This flag is only valid if is_debug_types is true. | |
827 | We can't read a CU directly from a DWO file: There are required | |
828 | attributes in the stub. */ | |
829 | unsigned int reading_dwo_directly : 1; | |
830 | ||
7ee85ab1 DE |
831 | /* Non-zero if the TU has been read. |
832 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
833 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
834 | fetching them from random other DWOs (due to comdat folding). | |
835 | If the TU has already been read, the optimization is unnecessary | |
836 | (and unwise - we don't want to change where gdb thinks the TU lives | |
837 | "midflight"). | |
838 | This flag is only valid if is_debug_types is true. */ | |
839 | unsigned int tu_read : 1; | |
840 | ||
3019eac3 DE |
841 | /* The section this CU/TU lives in. |
842 | If the DIE refers to a DWO file, this is always the original die, | |
843 | not the DWO file. */ | |
8a0459fd | 844 | struct dwarf2_section_info *section; |
348e048f | 845 | |
17ea53c3 | 846 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
847 | of the CU cache it gets reset to NULL again. This is left as NULL for |
848 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 849 | struct dwarf2_cu *cu; |
1c379e20 | 850 | |
e3b94546 SM |
851 | /* The corresponding dwarf2_per_objfile. */ |
852 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
9291a0cd | 853 | |
fffbe6a8 YQ |
854 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
855 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
856 | union |
857 | { | |
858 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 859 | or NULL for unread partial units. */ |
9291a0cd TT |
860 | struct partial_symtab *psymtab; |
861 | ||
862 | /* Data needed by the "quick" functions. */ | |
863 | struct dwarf2_per_cu_quick_data *quick; | |
864 | } v; | |
95554aad | 865 | |
796a7ff8 DE |
866 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
867 | while reading psymtabs, used to compute the psymtab dependencies, | |
868 | and then cleared. Then it is filled in again while reading full | |
869 | symbols, and only deleted when the objfile is destroyed. | |
870 | ||
871 | This is also used to work around a difference between the way gold | |
872 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
873 | is a gold bug. For symbols coming from TUs, gold records in the index | |
874 | the CU that includes the TU instead of the TU itself. This breaks | |
875 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
876 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
877 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
878 | we need to look in TU Z to find X. Fortunately, this is akin to | |
879 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
880 | .gdb_index version <=7 this also records the TUs that the CU referred | |
881 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
882 | indices so we only pay a price for gold generated indices. |
883 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 884 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
885 | }; |
886 | ||
348e048f DE |
887 | /* Entry in the signatured_types hash table. */ |
888 | ||
889 | struct signatured_type | |
890 | { | |
42e7ad6c | 891 | /* The "per_cu" object of this type. |
ac9ec31b | 892 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
893 | N.B.: This is the first member so that it's easy to convert pointers |
894 | between them. */ | |
895 | struct dwarf2_per_cu_data per_cu; | |
896 | ||
3019eac3 | 897 | /* The type's signature. */ |
348e048f DE |
898 | ULONGEST signature; |
899 | ||
3019eac3 | 900 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
901 | If this TU is a DWO stub and the definition lives in a DWO file |
902 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
903 | cu_offset type_offset_in_tu; |
904 | ||
905 | /* Offset in the section of the type's DIE. | |
906 | If the definition lives in a DWO file, this is the offset in the | |
907 | .debug_types.dwo section. | |
908 | The value is zero until the actual value is known. | |
909 | Zero is otherwise not a valid section offset. */ | |
910 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
911 | |
912 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
913 | can share them. This points to the containing symtab. */ | |
914 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
915 | |
916 | /* The type. | |
917 | The first time we encounter this type we fully read it in and install it | |
918 | in the symbol tables. Subsequent times we only need the type. */ | |
919 | struct type *type; | |
a2ce51a0 DE |
920 | |
921 | /* Containing DWO unit. | |
922 | This field is valid iff per_cu.reading_dwo_directly. */ | |
923 | struct dwo_unit *dwo_unit; | |
348e048f DE |
924 | }; |
925 | ||
0186c6a7 DE |
926 | typedef struct signatured_type *sig_type_ptr; |
927 | DEF_VEC_P (sig_type_ptr); | |
928 | ||
094b34ac DE |
929 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
930 | This includes type_unit_group and quick_file_names. */ | |
931 | ||
932 | struct stmt_list_hash | |
933 | { | |
934 | /* The DWO unit this table is from or NULL if there is none. */ | |
935 | struct dwo_unit *dwo_unit; | |
936 | ||
937 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 938 | sect_offset line_sect_off; |
094b34ac DE |
939 | }; |
940 | ||
f4dc4d17 DE |
941 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
942 | an object of this type. */ | |
943 | ||
944 | struct type_unit_group | |
945 | { | |
0186c6a7 | 946 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
947 | To simplify things we create an artificial CU that "includes" all the |
948 | type units using this stmt_list so that the rest of the code still has | |
949 | a "per_cu" handle on the symtab. | |
950 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 951 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
952 | struct dwarf2_per_cu_data per_cu; |
953 | ||
0186c6a7 DE |
954 | /* The TUs that share this DW_AT_stmt_list entry. |
955 | This is added to while parsing type units to build partial symtabs, | |
956 | and is deleted afterwards and not used again. */ | |
957 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 958 | |
43f3e411 | 959 | /* The compunit symtab. |
094b34ac | 960 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
961 | so we create an essentially anonymous symtab as the compunit symtab. */ |
962 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 963 | |
094b34ac DE |
964 | /* The data used to construct the hash key. */ |
965 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
966 | |
967 | /* The number of symtabs from the line header. | |
968 | The value here must match line_header.num_file_names. */ | |
969 | unsigned int num_symtabs; | |
970 | ||
971 | /* The symbol tables for this TU (obtained from the files listed in | |
972 | DW_AT_stmt_list). | |
973 | WARNING: The order of entries here must match the order of entries | |
974 | in the line header. After the first TU using this type_unit_group, the | |
975 | line header for the subsequent TUs is recreated from this. This is done | |
976 | because we need to use the same symtabs for each TU using the same | |
977 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
978 | there's no guarantee the line header doesn't have duplicate entries. */ | |
979 | struct symtab **symtabs; | |
980 | }; | |
981 | ||
73869dc2 | 982 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
983 | |
984 | struct dwo_sections | |
985 | { | |
986 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
987 | struct dwarf2_section_info line; |
988 | struct dwarf2_section_info loc; | |
43988095 | 989 | struct dwarf2_section_info loclists; |
09262596 DE |
990 | struct dwarf2_section_info macinfo; |
991 | struct dwarf2_section_info macro; | |
3019eac3 DE |
992 | struct dwarf2_section_info str; |
993 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
994 | /* In the case of a virtual DWO file, these two are unused. */ |
995 | struct dwarf2_section_info info; | |
3019eac3 DE |
996 | VEC (dwarf2_section_info_def) *types; |
997 | }; | |
998 | ||
c88ee1f0 | 999 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
1000 | |
1001 | struct dwo_unit | |
1002 | { | |
1003 | /* Backlink to the containing struct dwo_file. */ | |
1004 | struct dwo_file *dwo_file; | |
1005 | ||
1006 | /* The "id" that distinguishes this CU/TU. | |
1007 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
1008 | Since signatures came first, we stick with it for consistency. */ | |
1009 | ULONGEST signature; | |
1010 | ||
1011 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 1012 | struct dwarf2_section_info *section; |
3019eac3 | 1013 | |
9c541725 PA |
1014 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
1015 | sect_offset sect_off; | |
3019eac3 DE |
1016 | unsigned int length; |
1017 | ||
1018 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
1019 | cu_offset type_offset_in_tu; | |
1020 | }; | |
1021 | ||
73869dc2 DE |
1022 | /* include/dwarf2.h defines the DWP section codes. |
1023 | It defines a max value but it doesn't define a min value, which we | |
1024 | use for error checking, so provide one. */ | |
1025 | ||
1026 | enum dwp_v2_section_ids | |
1027 | { | |
1028 | DW_SECT_MIN = 1 | |
1029 | }; | |
1030 | ||
80626a55 | 1031 | /* Data for one DWO file. |
57d63ce2 DE |
1032 | |
1033 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
1034 | appears in a DWP file). DWP files don't really have DWO files per se - | |
1035 | comdat folding of types "loses" the DWO file they came from, and from | |
1036 | a high level view DWP files appear to contain a mass of random types. | |
1037 | However, to maintain consistency with the non-DWP case we pretend DWP | |
1038 | files contain virtual DWO files, and we assign each TU with one virtual | |
1039 | DWO file (generally based on the line and abbrev section offsets - | |
1040 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
1041 | |
1042 | struct dwo_file | |
1043 | { | |
0ac5b59e | 1044 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
1045 | For virtual DWO files the name is constructed from the section offsets |
1046 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
1047 | from related CU+TUs. */ | |
0ac5b59e DE |
1048 | const char *dwo_name; |
1049 | ||
1050 | /* The DW_AT_comp_dir attribute. */ | |
1051 | const char *comp_dir; | |
3019eac3 | 1052 | |
80626a55 DE |
1053 | /* The bfd, when the file is open. Otherwise this is NULL. |
1054 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
1055 | bfd *dbfd; | |
3019eac3 | 1056 | |
73869dc2 DE |
1057 | /* The sections that make up this DWO file. |
1058 | Remember that for virtual DWO files in DWP V2, these are virtual | |
1059 | sections (for lack of a better name). */ | |
3019eac3 DE |
1060 | struct dwo_sections sections; |
1061 | ||
33c5cd75 DB |
1062 | /* The CUs in the file. |
1063 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
1064 | an extension to handle LLVM's Link Time Optimization output (where | |
1065 | multiple source files may be compiled into a single object/dwo pair). */ | |
1066 | htab_t cus; | |
3019eac3 DE |
1067 | |
1068 | /* Table of TUs in the file. | |
1069 | Each element is a struct dwo_unit. */ | |
1070 | htab_t tus; | |
1071 | }; | |
1072 | ||
80626a55 DE |
1073 | /* These sections are what may appear in a DWP file. */ |
1074 | ||
1075 | struct dwp_sections | |
1076 | { | |
73869dc2 | 1077 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
1078 | struct dwarf2_section_info str; |
1079 | struct dwarf2_section_info cu_index; | |
1080 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
1081 | |
1082 | /* These are only used by DWP version 2 files. | |
1083 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
1084 | sections are referenced by section number, and are not recorded here. | |
1085 | In DWP version 2 there is at most one copy of all these sections, each | |
1086 | section being (effectively) comprised of the concatenation of all of the | |
1087 | individual sections that exist in the version 1 format. | |
1088 | To keep the code simple we treat each of these concatenated pieces as a | |
1089 | section itself (a virtual section?). */ | |
1090 | struct dwarf2_section_info abbrev; | |
1091 | struct dwarf2_section_info info; | |
1092 | struct dwarf2_section_info line; | |
1093 | struct dwarf2_section_info loc; | |
1094 | struct dwarf2_section_info macinfo; | |
1095 | struct dwarf2_section_info macro; | |
1096 | struct dwarf2_section_info str_offsets; | |
1097 | struct dwarf2_section_info types; | |
80626a55 DE |
1098 | }; |
1099 | ||
73869dc2 DE |
1100 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
1101 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 1102 | |
73869dc2 | 1103 | struct virtual_v1_dwo_sections |
80626a55 DE |
1104 | { |
1105 | struct dwarf2_section_info abbrev; | |
1106 | struct dwarf2_section_info line; | |
1107 | struct dwarf2_section_info loc; | |
1108 | struct dwarf2_section_info macinfo; | |
1109 | struct dwarf2_section_info macro; | |
1110 | struct dwarf2_section_info str_offsets; | |
1111 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 1112 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
1113 | struct dwarf2_section_info info_or_types; |
1114 | }; | |
1115 | ||
73869dc2 DE |
1116 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
1117 | In version 2, the sections of the DWO files are concatenated together | |
1118 | and stored in one section of that name. Thus each ELF section contains | |
1119 | several "virtual" sections. */ | |
1120 | ||
1121 | struct virtual_v2_dwo_sections | |
1122 | { | |
1123 | bfd_size_type abbrev_offset; | |
1124 | bfd_size_type abbrev_size; | |
1125 | ||
1126 | bfd_size_type line_offset; | |
1127 | bfd_size_type line_size; | |
1128 | ||
1129 | bfd_size_type loc_offset; | |
1130 | bfd_size_type loc_size; | |
1131 | ||
1132 | bfd_size_type macinfo_offset; | |
1133 | bfd_size_type macinfo_size; | |
1134 | ||
1135 | bfd_size_type macro_offset; | |
1136 | bfd_size_type macro_size; | |
1137 | ||
1138 | bfd_size_type str_offsets_offset; | |
1139 | bfd_size_type str_offsets_size; | |
1140 | ||
1141 | /* Each DWP hash table entry records one CU or one TU. | |
1142 | That is recorded here, and copied to dwo_unit.section. */ | |
1143 | bfd_size_type info_or_types_offset; | |
1144 | bfd_size_type info_or_types_size; | |
1145 | }; | |
1146 | ||
80626a55 DE |
1147 | /* Contents of DWP hash tables. */ |
1148 | ||
1149 | struct dwp_hash_table | |
1150 | { | |
73869dc2 | 1151 | uint32_t version, nr_columns; |
80626a55 | 1152 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
1153 | const gdb_byte *hash_table, *unit_table; |
1154 | union | |
1155 | { | |
1156 | struct | |
1157 | { | |
1158 | const gdb_byte *indices; | |
1159 | } v1; | |
1160 | struct | |
1161 | { | |
1162 | /* This is indexed by column number and gives the id of the section | |
1163 | in that column. */ | |
1164 | #define MAX_NR_V2_DWO_SECTIONS \ | |
1165 | (1 /* .debug_info or .debug_types */ \ | |
1166 | + 1 /* .debug_abbrev */ \ | |
1167 | + 1 /* .debug_line */ \ | |
1168 | + 1 /* .debug_loc */ \ | |
1169 | + 1 /* .debug_str_offsets */ \ | |
1170 | + 1 /* .debug_macro or .debug_macinfo */) | |
1171 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
1172 | const gdb_byte *offsets; | |
1173 | const gdb_byte *sizes; | |
1174 | } v2; | |
1175 | } section_pool; | |
80626a55 DE |
1176 | }; |
1177 | ||
1178 | /* Data for one DWP file. */ | |
1179 | ||
1180 | struct dwp_file | |
1181 | { | |
1182 | /* Name of the file. */ | |
1183 | const char *name; | |
1184 | ||
73869dc2 DE |
1185 | /* File format version. */ |
1186 | int version; | |
1187 | ||
93417882 | 1188 | /* The bfd. */ |
80626a55 DE |
1189 | bfd *dbfd; |
1190 | ||
1191 | /* Section info for this file. */ | |
1192 | struct dwp_sections sections; | |
1193 | ||
57d63ce2 | 1194 | /* Table of CUs in the file. */ |
80626a55 DE |
1195 | const struct dwp_hash_table *cus; |
1196 | ||
1197 | /* Table of TUs in the file. */ | |
1198 | const struct dwp_hash_table *tus; | |
1199 | ||
19ac8c2e DE |
1200 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
1201 | htab_t loaded_cus; | |
1202 | htab_t loaded_tus; | |
80626a55 | 1203 | |
73869dc2 DE |
1204 | /* Table to map ELF section numbers to their sections. |
1205 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
1206 | unsigned int num_sections; |
1207 | asection **elf_sections; | |
1208 | }; | |
1209 | ||
36586728 TT |
1210 | /* This represents a '.dwz' file. */ |
1211 | ||
1212 | struct dwz_file | |
1213 | { | |
1214 | /* A dwz file can only contain a few sections. */ | |
1215 | struct dwarf2_section_info abbrev; | |
1216 | struct dwarf2_section_info info; | |
1217 | struct dwarf2_section_info str; | |
1218 | struct dwarf2_section_info line; | |
1219 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1220 | struct dwarf2_section_info gdb_index; |
927aa2e7 | 1221 | struct dwarf2_section_info debug_names; |
36586728 TT |
1222 | |
1223 | /* The dwz's BFD. */ | |
1224 | bfd *dwz_bfd; | |
1225 | }; | |
1226 | ||
0963b4bd MS |
1227 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1228 | al. which are used for both .debug_info and .debug_types dies. | |
1229 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1230 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1231 | |
1232 | struct die_reader_specs | |
1233 | { | |
a32a8923 | 1234 | /* The bfd of die_section. */ |
93311388 DE |
1235 | bfd* abfd; |
1236 | ||
1237 | /* The CU of the DIE we are parsing. */ | |
1238 | struct dwarf2_cu *cu; | |
1239 | ||
80626a55 | 1240 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1241 | struct dwo_file *dwo_file; |
1242 | ||
dee91e82 | 1243 | /* The section the die comes from. |
3019eac3 | 1244 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1245 | struct dwarf2_section_info *die_section; |
1246 | ||
1247 | /* die_section->buffer. */ | |
d521ce57 | 1248 | const gdb_byte *buffer; |
f664829e DE |
1249 | |
1250 | /* The end of the buffer. */ | |
1251 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1252 | |
1253 | /* The value of the DW_AT_comp_dir attribute. */ | |
1254 | const char *comp_dir; | |
685af9cd TT |
1255 | |
1256 | /* The abbreviation table to use when reading the DIEs. */ | |
1257 | struct abbrev_table *abbrev_table; | |
93311388 DE |
1258 | }; |
1259 | ||
fd820528 | 1260 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1261 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1262 | const gdb_byte *info_ptr, |
dee91e82 DE |
1263 | struct die_info *comp_unit_die, |
1264 | int has_children, | |
1265 | void *data); | |
1266 | ||
ecfb656c PA |
1267 | /* A 1-based directory index. This is a strong typedef to prevent |
1268 | accidentally using a directory index as a 0-based index into an | |
1269 | array/vector. */ | |
1270 | enum class dir_index : unsigned int {}; | |
1271 | ||
1272 | /* Likewise, a 1-based file name index. */ | |
1273 | enum class file_name_index : unsigned int {}; | |
1274 | ||
52059ffd TT |
1275 | struct file_entry |
1276 | { | |
fff8551c PA |
1277 | file_entry () = default; |
1278 | ||
ecfb656c | 1279 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
1280 | unsigned int mod_time_, unsigned int length_) |
1281 | : name (name_), | |
ecfb656c | 1282 | d_index (d_index_), |
fff8551c PA |
1283 | mod_time (mod_time_), |
1284 | length (length_) | |
1285 | {} | |
1286 | ||
ecfb656c PA |
1287 | /* Return the include directory at D_INDEX stored in LH. Returns |
1288 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
1289 | const char *include_dir (const line_header *lh) const; |
1290 | ||
fff8551c PA |
1291 | /* The file name. Note this is an observing pointer. The memory is |
1292 | owned by debug_line_buffer. */ | |
1293 | const char *name {}; | |
1294 | ||
8c43009f | 1295 | /* The directory index (1-based). */ |
ecfb656c | 1296 | dir_index d_index {}; |
fff8551c PA |
1297 | |
1298 | unsigned int mod_time {}; | |
1299 | ||
1300 | unsigned int length {}; | |
1301 | ||
1302 | /* True if referenced by the Line Number Program. */ | |
1303 | bool included_p {}; | |
1304 | ||
83769d0b | 1305 | /* The associated symbol table, if any. */ |
fff8551c | 1306 | struct symtab *symtab {}; |
52059ffd TT |
1307 | }; |
1308 | ||
debd256d JB |
1309 | /* The line number information for a compilation unit (found in the |
1310 | .debug_line section) begins with a "statement program header", | |
1311 | which contains the following information. */ | |
1312 | struct line_header | |
1313 | { | |
fff8551c PA |
1314 | line_header () |
1315 | : offset_in_dwz {} | |
1316 | {} | |
1317 | ||
1318 | /* Add an entry to the include directory table. */ | |
1319 | void add_include_dir (const char *include_dir); | |
1320 | ||
1321 | /* Add an entry to the file name table. */ | |
ecfb656c | 1322 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1323 | unsigned int mod_time, unsigned int length); |
1324 | ||
ecfb656c | 1325 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1326 | is out of bounds. */ |
ecfb656c | 1327 | const char *include_dir_at (dir_index index) const |
8c43009f | 1328 | { |
ecfb656c PA |
1329 | /* Convert directory index number (1-based) to vector index |
1330 | (0-based). */ | |
1331 | size_t vec_index = to_underlying (index) - 1; | |
1332 | ||
1333 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 1334 | return NULL; |
ecfb656c | 1335 | return include_dirs[vec_index]; |
8c43009f PA |
1336 | } |
1337 | ||
ecfb656c | 1338 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1339 | is out of bounds. */ |
ecfb656c | 1340 | file_entry *file_name_at (file_name_index index) |
8c43009f | 1341 | { |
ecfb656c PA |
1342 | /* Convert file name index number (1-based) to vector index |
1343 | (0-based). */ | |
1344 | size_t vec_index = to_underlying (index) - 1; | |
1345 | ||
1346 | if (vec_index >= file_names.size ()) | |
fff8551c | 1347 | return NULL; |
ecfb656c | 1348 | return &file_names[vec_index]; |
fff8551c PA |
1349 | } |
1350 | ||
1351 | /* Const version of the above. */ | |
1352 | const file_entry *file_name_at (unsigned int index) const | |
1353 | { | |
1354 | if (index >= file_names.size ()) | |
8c43009f PA |
1355 | return NULL; |
1356 | return &file_names[index]; | |
1357 | } | |
1358 | ||
527f3840 | 1359 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1360 | sect_offset sect_off {}; |
527f3840 JK |
1361 | |
1362 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1363 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1364 | ||
1365 | unsigned int total_length {}; | |
1366 | unsigned short version {}; | |
1367 | unsigned int header_length {}; | |
1368 | unsigned char minimum_instruction_length {}; | |
1369 | unsigned char maximum_ops_per_instruction {}; | |
1370 | unsigned char default_is_stmt {}; | |
1371 | int line_base {}; | |
1372 | unsigned char line_range {}; | |
1373 | unsigned char opcode_base {}; | |
debd256d JB |
1374 | |
1375 | /* standard_opcode_lengths[i] is the number of operands for the | |
1376 | standard opcode whose value is i. This means that | |
1377 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1378 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1379 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1380 | |
fff8551c PA |
1381 | /* The include_directories table. Note these are observing |
1382 | pointers. The memory is owned by debug_line_buffer. */ | |
1383 | std::vector<const char *> include_dirs; | |
debd256d | 1384 | |
fff8551c PA |
1385 | /* The file_names table. */ |
1386 | std::vector<file_entry> file_names; | |
debd256d JB |
1387 | |
1388 | /* The start and end of the statement program following this | |
6502dd73 | 1389 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1390 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1391 | }; |
c906108c | 1392 | |
fff8551c PA |
1393 | typedef std::unique_ptr<line_header> line_header_up; |
1394 | ||
8c43009f PA |
1395 | const char * |
1396 | file_entry::include_dir (const line_header *lh) const | |
1397 | { | |
ecfb656c | 1398 | return lh->include_dir_at (d_index); |
8c43009f PA |
1399 | } |
1400 | ||
c906108c | 1401 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1402 | need this much information. */ |
c906108c SS |
1403 | struct partial_die_info |
1404 | { | |
72bf9492 | 1405 | /* Offset of this DIE. */ |
9c541725 | 1406 | sect_offset sect_off; |
72bf9492 DJ |
1407 | |
1408 | /* DWARF-2 tag for this DIE. */ | |
1409 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1410 | ||
72bf9492 DJ |
1411 | /* Assorted flags describing the data found in this DIE. */ |
1412 | unsigned int has_children : 1; | |
1413 | unsigned int is_external : 1; | |
1414 | unsigned int is_declaration : 1; | |
1415 | unsigned int has_type : 1; | |
1416 | unsigned int has_specification : 1; | |
1417 | unsigned int has_pc_info : 1; | |
481860b3 | 1418 | unsigned int may_be_inlined : 1; |
72bf9492 | 1419 | |
0c1b455e TT |
1420 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1421 | unsigned int main_subprogram : 1; | |
1422 | ||
72bf9492 DJ |
1423 | /* Flag set if the SCOPE field of this structure has been |
1424 | computed. */ | |
1425 | unsigned int scope_set : 1; | |
1426 | ||
fa4028e9 JB |
1427 | /* Flag set if the DIE has a byte_size attribute. */ |
1428 | unsigned int has_byte_size : 1; | |
1429 | ||
ff908ebf AW |
1430 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1431 | unsigned int has_const_value : 1; | |
1432 | ||
98bfdba5 PA |
1433 | /* Flag set if any of the DIE's children are template arguments. */ |
1434 | unsigned int has_template_arguments : 1; | |
1435 | ||
abc72ce4 DE |
1436 | /* Flag set if fixup_partial_die has been called on this die. */ |
1437 | unsigned int fixup_called : 1; | |
1438 | ||
36586728 TT |
1439 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1440 | unsigned int is_dwz : 1; | |
1441 | ||
1442 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1443 | unsigned int spec_is_dwz : 1; | |
1444 | ||
72bf9492 | 1445 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1446 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1447 | const char *name; |
72bf9492 | 1448 | |
abc72ce4 DE |
1449 | /* The linkage name, if present. */ |
1450 | const char *linkage_name; | |
1451 | ||
72bf9492 DJ |
1452 | /* The scope to prepend to our children. This is generally |
1453 | allocated on the comp_unit_obstack, so will disappear | |
1454 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1455 | const char *scope; |
72bf9492 | 1456 | |
95554aad TT |
1457 | /* Some data associated with the partial DIE. The tag determines |
1458 | which field is live. */ | |
1459 | union | |
1460 | { | |
1461 | /* The location description associated with this DIE, if any. */ | |
1462 | struct dwarf_block *locdesc; | |
1463 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1464 | sect_offset sect_off; |
95554aad | 1465 | } d; |
72bf9492 DJ |
1466 | |
1467 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1468 | CORE_ADDR lowpc; |
1469 | CORE_ADDR highpc; | |
72bf9492 | 1470 | |
93311388 | 1471 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1472 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1473 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1474 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1475 | const gdb_byte *sibling; |
72bf9492 DJ |
1476 | |
1477 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1478 | DW_AT_specification (or DW_AT_abstract_origin or | |
1479 | DW_AT_extension). */ | |
b64f50a1 | 1480 | sect_offset spec_offset; |
72bf9492 DJ |
1481 | |
1482 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1483 | if any. */ | |
1484 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1485 | }; |
1486 | ||
0963b4bd | 1487 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1488 | struct abbrev_info |
1489 | { | |
1490 | unsigned int number; /* number identifying abbrev */ | |
1491 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1492 | unsigned short has_children; /* boolean */ |
1493 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1494 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1495 | struct abbrev_info *next; /* next in chain */ | |
1496 | }; | |
1497 | ||
1498 | struct attr_abbrev | |
1499 | { | |
9d25dd43 DE |
1500 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1501 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1502 | |
1503 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1504 | LONGEST implicit_const; | |
c906108c SS |
1505 | }; |
1506 | ||
433df2d4 DE |
1507 | /* Size of abbrev_table.abbrev_hash_table. */ |
1508 | #define ABBREV_HASH_SIZE 121 | |
1509 | ||
1510 | /* Top level data structure to contain an abbreviation table. */ | |
1511 | ||
1512 | struct abbrev_table | |
1513 | { | |
685af9cd TT |
1514 | explicit abbrev_table (sect_offset off) |
1515 | : sect_off (off) | |
1516 | { | |
4a17f768 | 1517 | m_abbrevs = |
685af9cd | 1518 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1519 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1520 | } |
1521 | ||
1522 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1523 | ||
1524 | /* Allocate space for a struct abbrev_info object in | |
1525 | ABBREV_TABLE. */ | |
1526 | struct abbrev_info *alloc_abbrev (); | |
1527 | ||
1528 | /* Add an abbreviation to the table. */ | |
1529 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1530 | ||
1531 | /* Look up an abbrev in the table. | |
1532 | Returns NULL if the abbrev is not found. */ | |
1533 | ||
1534 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1535 | ||
1536 | ||
f4dc4d17 DE |
1537 | /* Where the abbrev table came from. |
1538 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1539 | const sect_offset sect_off; |
433df2d4 DE |
1540 | |
1541 | /* Storage for the abbrev table. */ | |
685af9cd | 1542 | auto_obstack abbrev_obstack; |
433df2d4 | 1543 | |
4a17f768 YQ |
1544 | private: |
1545 | ||
433df2d4 DE |
1546 | /* Hash table of abbrevs. |
1547 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1548 | It could be statically allocated, but the previous code didn't so we | |
1549 | don't either. */ | |
4a17f768 | 1550 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1551 | }; |
1552 | ||
685af9cd TT |
1553 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1554 | ||
0963b4bd | 1555 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1556 | struct attribute |
1557 | { | |
9d25dd43 | 1558 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1559 | ENUM_BITFIELD(dwarf_form) form : 15; |
1560 | ||
1561 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1562 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1563 | here for better struct attribute alignment. */ | |
1564 | unsigned int string_is_canonical : 1; | |
1565 | ||
b60c80d6 DJ |
1566 | union |
1567 | { | |
15d034d0 | 1568 | const char *str; |
b60c80d6 | 1569 | struct dwarf_block *blk; |
43bbcdc2 PH |
1570 | ULONGEST unsnd; |
1571 | LONGEST snd; | |
b60c80d6 | 1572 | CORE_ADDR addr; |
ac9ec31b | 1573 | ULONGEST signature; |
b60c80d6 DJ |
1574 | } |
1575 | u; | |
1576 | }; | |
1577 | ||
0963b4bd | 1578 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1579 | struct die_info |
1580 | { | |
76815b17 DE |
1581 | /* DWARF-2 tag for this DIE. */ |
1582 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1583 | ||
1584 | /* Number of attributes */ | |
98bfdba5 PA |
1585 | unsigned char num_attrs; |
1586 | ||
1587 | /* True if we're presently building the full type name for the | |
1588 | type derived from this DIE. */ | |
1589 | unsigned char building_fullname : 1; | |
76815b17 | 1590 | |
adde2bff DE |
1591 | /* True if this die is in process. PR 16581. */ |
1592 | unsigned char in_process : 1; | |
1593 | ||
76815b17 DE |
1594 | /* Abbrev number */ |
1595 | unsigned int abbrev; | |
1596 | ||
93311388 | 1597 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1598 | sect_offset sect_off; |
78ba4af6 JB |
1599 | |
1600 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1601 | points to this die's parent; CHILD points to the first child of | |
1602 | this node; and all the children of a given node are chained | |
4950bc1c | 1603 | together via their SIBLING fields. */ |
639d11d3 DC |
1604 | struct die_info *child; /* Its first child, if any. */ |
1605 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1606 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1607 | |
b60c80d6 DJ |
1608 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1609 | zero, but it's not common and zero-sized arrays are not | |
1610 | sufficiently portable C. */ | |
1611 | struct attribute attrs[1]; | |
c906108c SS |
1612 | }; |
1613 | ||
0963b4bd | 1614 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1615 | |
1616 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1617 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1618 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1619 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1620 | #define DW_SND(attr) ((attr)->u.snd) | |
1621 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1622 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1623 | |
0963b4bd | 1624 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1625 | struct dwarf_block |
1626 | { | |
56eb65bd | 1627 | size_t size; |
1d6edc3c JK |
1628 | |
1629 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1630 | const gdb_byte *data; |
c906108c SS |
1631 | }; |
1632 | ||
c906108c SS |
1633 | #ifndef ATTR_ALLOC_CHUNK |
1634 | #define ATTR_ALLOC_CHUNK 4 | |
1635 | #endif | |
1636 | ||
c906108c SS |
1637 | /* Allocate fields for structs, unions and enums in this size. */ |
1638 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1639 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1640 | #endif | |
1641 | ||
c906108c SS |
1642 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1643 | but this would require a corresponding change in unpack_field_as_long | |
1644 | and friends. */ | |
1645 | static int bits_per_byte = 8; | |
1646 | ||
52059ffd TT |
1647 | struct nextfield |
1648 | { | |
1649 | struct nextfield *next; | |
1650 | int accessibility; | |
1651 | int virtuality; | |
1652 | struct field field; | |
1653 | }; | |
1654 | ||
1655 | struct nextfnfield | |
1656 | { | |
1657 | struct nextfnfield *next; | |
1658 | struct fn_field fnfield; | |
1659 | }; | |
1660 | ||
1661 | struct fnfieldlist | |
1662 | { | |
1663 | const char *name; | |
1664 | int length; | |
1665 | struct nextfnfield *head; | |
1666 | }; | |
1667 | ||
883fd55a | 1668 | struct decl_field_list |
52059ffd | 1669 | { |
883fd55a KS |
1670 | struct decl_field field; |
1671 | struct decl_field_list *next; | |
52059ffd TT |
1672 | }; |
1673 | ||
c906108c SS |
1674 | /* The routines that read and process dies for a C struct or C++ class |
1675 | pass lists of data member fields and lists of member function fields | |
1676 | in an instance of a field_info structure, as defined below. */ | |
1677 | struct field_info | |
c5aa993b | 1678 | { |
0963b4bd | 1679 | /* List of data member and baseclasses fields. */ |
52059ffd | 1680 | struct nextfield *fields, *baseclasses; |
c906108c | 1681 | |
7d0ccb61 | 1682 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1683 | int nfields; |
c906108c | 1684 | |
c5aa993b JM |
1685 | /* Number of baseclasses. */ |
1686 | int nbaseclasses; | |
c906108c | 1687 | |
c5aa993b JM |
1688 | /* Set if the accesibility of one of the fields is not public. */ |
1689 | int non_public_fields; | |
c906108c | 1690 | |
c5aa993b JM |
1691 | /* Member function fieldlist array, contains name of possibly overloaded |
1692 | member function, number of overloaded member functions and a pointer | |
1693 | to the head of the member function field chain. */ | |
52059ffd | 1694 | struct fnfieldlist *fnfieldlists; |
c906108c | 1695 | |
c5aa993b JM |
1696 | /* Number of entries in the fnfieldlists array. */ |
1697 | int nfnfields; | |
98751a41 JK |
1698 | |
1699 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1700 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
883fd55a | 1701 | struct decl_field_list *typedef_field_list; |
98751a41 | 1702 | unsigned typedef_field_list_count; |
883fd55a KS |
1703 | |
1704 | /* Nested types defined by this class and the number of elements in this | |
1705 | list. */ | |
1706 | struct decl_field_list *nested_types_list; | |
1707 | unsigned nested_types_list_count; | |
c5aa993b | 1708 | }; |
c906108c | 1709 | |
10b3939b DJ |
1710 | /* One item on the queue of compilation units to read in full symbols |
1711 | for. */ | |
1712 | struct dwarf2_queue_item | |
1713 | { | |
1714 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1715 | enum language pretend_language; |
10b3939b DJ |
1716 | struct dwarf2_queue_item *next; |
1717 | }; | |
1718 | ||
1719 | /* The current queue. */ | |
1720 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1721 | ||
ae038cb0 DJ |
1722 | /* Loaded secondary compilation units are kept in memory until they |
1723 | have not been referenced for the processing of this many | |
1724 | compilation units. Set this to zero to disable caching. Cache | |
1725 | sizes of up to at least twenty will improve startup time for | |
1726 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1727 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1728 | static void |
b4f54984 DE |
1729 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1730 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1731 | { |
3e43a32a | 1732 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1733 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1734 | value); |
1735 | } | |
4390d890 | 1736 | \f |
c906108c SS |
1737 | /* local function prototypes */ |
1738 | ||
a32a8923 DE |
1739 | static const char *get_section_name (const struct dwarf2_section_info *); |
1740 | ||
1741 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1742 | ||
918dd910 JK |
1743 | static void dwarf2_find_base_address (struct die_info *die, |
1744 | struct dwarf2_cu *cu); | |
1745 | ||
0018ea6f DE |
1746 | static struct partial_symtab *create_partial_symtab |
1747 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1748 | ||
f1902523 JK |
1749 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1750 | const gdb_byte *info_ptr, | |
1751 | struct die_info *type_unit_die, | |
1752 | int has_children, void *data); | |
1753 | ||
ed2dc618 SM |
1754 | static void dwarf2_build_psymtabs_hard |
1755 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1756 | |
72bf9492 DJ |
1757 | static void scan_partial_symbols (struct partial_die_info *, |
1758 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1759 | int, struct dwarf2_cu *); |
c906108c | 1760 | |
72bf9492 DJ |
1761 | static void add_partial_symbol (struct partial_die_info *, |
1762 | struct dwarf2_cu *); | |
63d06c5c | 1763 | |
72bf9492 DJ |
1764 | static void add_partial_namespace (struct partial_die_info *pdi, |
1765 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1766 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1767 | |
5d7cb8df | 1768 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1769 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1770 | struct dwarf2_cu *cu); |
1771 | ||
72bf9492 DJ |
1772 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1773 | struct dwarf2_cu *cu); | |
91c24f0a | 1774 | |
bc30ff58 JB |
1775 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1776 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1777 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1778 | |
257e7a09 YQ |
1779 | static void dwarf2_read_symtab (struct partial_symtab *, |
1780 | struct objfile *); | |
c906108c | 1781 | |
a14ed312 | 1782 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1783 | |
685af9cd | 1784 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1785 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1786 | sect_offset); | |
433df2d4 | 1787 | |
d521ce57 | 1788 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1789 | |
dee91e82 | 1790 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1791 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1792 | |
d521ce57 TT |
1793 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1794 | struct partial_die_info *, | |
1795 | struct abbrev_info *, | |
1796 | unsigned int, | |
1797 | const gdb_byte *); | |
c906108c | 1798 | |
36586728 | 1799 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1800 | struct dwarf2_cu *); |
72bf9492 DJ |
1801 | |
1802 | static void fixup_partial_die (struct partial_die_info *, | |
1803 | struct dwarf2_cu *); | |
1804 | ||
d521ce57 TT |
1805 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1806 | struct attribute *, struct attr_abbrev *, | |
1807 | const gdb_byte *); | |
a8329558 | 1808 | |
a1855c1d | 1809 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1810 | |
a1855c1d | 1811 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1812 | |
a1855c1d | 1813 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1814 | |
a1855c1d | 1815 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1816 | |
a1855c1d | 1817 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1818 | |
d521ce57 | 1819 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1820 | unsigned int *); |
c906108c | 1821 | |
d521ce57 | 1822 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1823 | |
1824 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1825 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1826 | unsigned int *, unsigned int *); |
613e1657 | 1827 | |
d521ce57 TT |
1828 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1829 | const struct comp_unit_head *, | |
c764a876 DE |
1830 | unsigned int *); |
1831 | ||
d521ce57 | 1832 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1833 | |
ed2dc618 SM |
1834 | static sect_offset read_abbrev_offset |
1835 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1836 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1837 | |
d521ce57 | 1838 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1839 | |
d521ce57 | 1840 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1841 | |
ed2dc618 SM |
1842 | static const char *read_indirect_string |
1843 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1844 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1845 | |
ed2dc618 SM |
1846 | static const char *read_indirect_line_string |
1847 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1848 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1849 | |
ed2dc618 SM |
1850 | static const char *read_indirect_string_at_offset |
1851 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1852 | LONGEST str_offset); | |
927aa2e7 | 1853 | |
ed2dc618 SM |
1854 | static const char *read_indirect_string_from_dwz |
1855 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1856 | |
d521ce57 | 1857 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1858 | |
d521ce57 TT |
1859 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1860 | const gdb_byte *, | |
3019eac3 DE |
1861 | unsigned int *); |
1862 | ||
d521ce57 | 1863 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1864 | ULONGEST str_index); |
3019eac3 | 1865 | |
e142c38c | 1866 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1867 | |
e142c38c DJ |
1868 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1869 | struct dwarf2_cu *); | |
c906108c | 1870 | |
348e048f | 1871 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1872 | unsigned int); |
348e048f | 1873 | |
7d45c7c3 KB |
1874 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1875 | struct dwarf2_cu *cu); | |
1876 | ||
05cf31d1 JB |
1877 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1878 | struct dwarf2_cu *cu); | |
1879 | ||
e142c38c | 1880 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1881 | |
e142c38c | 1882 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1883 | struct dwarf2_cu **); |
63d06c5c | 1884 | |
9c541725 | 1885 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1886 | struct dwarf2_cu *cu); |
debd256d | 1887 | |
f3f5162e | 1888 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1889 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1890 | CORE_ADDR, int decode_mapping); |
c906108c | 1891 | |
4d663531 | 1892 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1893 | |
43f3e411 DE |
1894 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1895 | const char *, const char *, | |
1896 | CORE_ADDR); | |
f4dc4d17 | 1897 | |
a14ed312 | 1898 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1899 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1900 | |
ff39bb5e | 1901 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1902 | struct dwarf2_cu *); |
c906108c | 1903 | |
ff39bb5e | 1904 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1905 | struct type *type, |
1906 | const char *name, | |
1907 | struct obstack *obstack, | |
12df843f | 1908 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1909 | const gdb_byte **bytes, |
98bfdba5 | 1910 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1911 | |
e7c27a73 | 1912 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1913 | |
b4ba55a1 JB |
1914 | static int need_gnat_info (struct dwarf2_cu *); |
1915 | ||
3e43a32a MS |
1916 | static struct type *die_descriptive_type (struct die_info *, |
1917 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1918 | |
1919 | static void set_descriptive_type (struct type *, struct die_info *, | |
1920 | struct dwarf2_cu *); | |
1921 | ||
e7c27a73 DJ |
1922 | static struct type *die_containing_type (struct die_info *, |
1923 | struct dwarf2_cu *); | |
c906108c | 1924 | |
ff39bb5e | 1925 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1926 | struct dwarf2_cu *); |
c906108c | 1927 | |
f792889a | 1928 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1929 | |
673bfd45 DE |
1930 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1931 | ||
0d5cff50 | 1932 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1933 | |
6e70227d | 1934 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1935 | const char *suffix, int physname, |
1936 | struct dwarf2_cu *cu); | |
63d06c5c | 1937 | |
e7c27a73 | 1938 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1939 | |
348e048f DE |
1940 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1941 | ||
e7c27a73 | 1942 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1943 | |
e7c27a73 | 1944 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1945 | |
96408a79 SA |
1946 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1947 | ||
71a3c369 TT |
1948 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1949 | ||
ff013f42 JK |
1950 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1951 | struct dwarf2_cu *, struct partial_symtab *); | |
1952 | ||
3a2b436a | 1953 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1954 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1955 | enum pc_bounds_kind |
1956 | { | |
e385593e | 1957 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1958 | PC_BOUNDS_NOT_PRESENT, |
1959 | ||
e385593e JK |
1960 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1961 | were present but they do not form a valid range of PC addresses. */ | |
1962 | PC_BOUNDS_INVALID, | |
1963 | ||
3a2b436a JK |
1964 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1965 | PC_BOUNDS_RANGES, | |
1966 | ||
1967 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1968 | PC_BOUNDS_HIGH_LOW, | |
1969 | }; | |
1970 | ||
1971 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1972 | CORE_ADDR *, CORE_ADDR *, | |
1973 | struct dwarf2_cu *, | |
1974 | struct partial_symtab *); | |
c906108c | 1975 | |
fae299cd DC |
1976 | static void get_scope_pc_bounds (struct die_info *, |
1977 | CORE_ADDR *, CORE_ADDR *, | |
1978 | struct dwarf2_cu *); | |
1979 | ||
801e3a5b JB |
1980 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1981 | CORE_ADDR, struct dwarf2_cu *); | |
1982 | ||
a14ed312 | 1983 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1984 | struct dwarf2_cu *); |
c906108c | 1985 | |
a14ed312 | 1986 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1987 | struct type *, struct dwarf2_cu *); |
c906108c | 1988 | |
a14ed312 | 1989 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1990 | struct die_info *, struct type *, |
e7c27a73 | 1991 | struct dwarf2_cu *); |
c906108c | 1992 | |
a14ed312 | 1993 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1994 | struct type *, |
1995 | struct dwarf2_cu *); | |
c906108c | 1996 | |
134d01f1 | 1997 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1998 | |
e7c27a73 | 1999 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 2000 | |
e7c27a73 | 2001 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 2002 | |
5d7cb8df JK |
2003 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
2004 | ||
22cee43f PMR |
2005 | static struct using_direct **using_directives (enum language); |
2006 | ||
27aa8d6a SW |
2007 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
2008 | ||
74921315 KS |
2009 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
2010 | ||
f55ee35c JK |
2011 | static struct type *read_module_type (struct die_info *die, |
2012 | struct dwarf2_cu *cu); | |
2013 | ||
38d518c9 | 2014 | static const char *namespace_name (struct die_info *die, |
e142c38c | 2015 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 2016 | |
134d01f1 | 2017 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 2018 | |
e7c27a73 | 2019 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 2020 | |
6e70227d | 2021 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
2022 | struct dwarf2_cu *); |
2023 | ||
bf6af496 | 2024 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 2025 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 2026 | struct die_info *); |
639d11d3 | 2027 | |
dee91e82 | 2028 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
2029 | const gdb_byte *info_ptr, |
2030 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
2031 | struct die_info *parent); |
2032 | ||
d521ce57 TT |
2033 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
2034 | struct die_info **, const gdb_byte *, | |
2035 | int *, int); | |
3019eac3 | 2036 | |
d521ce57 TT |
2037 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
2038 | struct die_info **, const gdb_byte *, | |
2039 | int *); | |
93311388 | 2040 | |
e7c27a73 | 2041 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 2042 | |
15d034d0 TT |
2043 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
2044 | struct obstack *); | |
71c25dea | 2045 | |
15d034d0 | 2046 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 2047 | |
15d034d0 | 2048 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
2049 | struct die_info *die, |
2050 | struct dwarf2_cu *cu); | |
2051 | ||
ca69b9e6 DE |
2052 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
2053 | struct dwarf2_cu *cu); | |
2054 | ||
e142c38c | 2055 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 2056 | struct dwarf2_cu **); |
9219021c | 2057 | |
f39c6ffd | 2058 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 2059 | |
f39c6ffd | 2060 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 2061 | |
f39c6ffd | 2062 | static const char *dwarf_form_name (unsigned int); |
c906108c | 2063 | |
a121b7c1 | 2064 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 2065 | |
f39c6ffd | 2066 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 2067 | |
f9aca02d | 2068 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 2069 | |
d97bc12b DE |
2070 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
2071 | ||
2072 | static void dump_die_for_error (struct die_info *); | |
2073 | ||
2074 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
2075 | struct die_info *); | |
c906108c | 2076 | |
d97bc12b | 2077 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 2078 | |
51545339 | 2079 | static void store_in_ref_table (struct die_info *, |
10b3939b | 2080 | struct dwarf2_cu *); |
c906108c | 2081 | |
ff39bb5e | 2082 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 2083 | |
ff39bb5e | 2084 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 2085 | |
348e048f | 2086 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 2087 | const struct attribute *, |
348e048f DE |
2088 | struct dwarf2_cu **); |
2089 | ||
10b3939b | 2090 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 2091 | const struct attribute *, |
f2f0e013 | 2092 | struct dwarf2_cu **); |
c906108c | 2093 | |
348e048f | 2094 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 2095 | const struct attribute *, |
348e048f DE |
2096 | struct dwarf2_cu **); |
2097 | ||
ac9ec31b DE |
2098 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
2099 | struct dwarf2_cu *); | |
2100 | ||
2101 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 2102 | const struct attribute *, |
ac9ec31b DE |
2103 | struct dwarf2_cu *); |
2104 | ||
e5fe5e75 | 2105 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 2106 | |
52dc124a | 2107 | static void read_signatured_type (struct signatured_type *); |
348e048f | 2108 | |
63e43d3a PMR |
2109 | static int attr_to_dynamic_prop (const struct attribute *attr, |
2110 | struct die_info *die, struct dwarf2_cu *cu, | |
2111 | struct dynamic_prop *prop); | |
2112 | ||
c906108c SS |
2113 | /* memory allocation interface */ |
2114 | ||
7b5a2f43 | 2115 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 2116 | |
b60c80d6 | 2117 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 2118 | |
43f3e411 | 2119 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 2120 | |
6e5a29e1 | 2121 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 2122 | |
6e5a29e1 | 2123 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 2124 | |
6e5a29e1 | 2125 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 2126 | |
6e5a29e1 | 2127 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 2128 | |
8cf6f0b1 TT |
2129 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
2130 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 2131 | const struct attribute *attr); |
8cf6f0b1 | 2132 | |
ff39bb5e | 2133 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 2134 | struct symbol *sym, |
f1e6e072 TT |
2135 | struct dwarf2_cu *cu, |
2136 | int is_block); | |
4c2df51b | 2137 | |
d521ce57 TT |
2138 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
2139 | const gdb_byte *info_ptr, | |
2140 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 2141 | |
72bf9492 DJ |
2142 | static hashval_t partial_die_hash (const void *item); |
2143 | ||
2144 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
2145 | ||
ae038cb0 | 2146 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
2147 | (sect_offset sect_off, unsigned int offset_in_dwz, |
2148 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 2149 | |
9816fde3 | 2150 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
2151 | struct die_info *comp_unit_die, |
2152 | enum language pretend_language); | |
93311388 | 2153 | |
ae038cb0 DJ |
2154 | static void free_cached_comp_units (void *); |
2155 | ||
ed2dc618 | 2156 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 2157 | |
dee91e82 | 2158 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 2159 | |
f792889a DJ |
2160 | static struct type *set_die_type (struct die_info *, struct type *, |
2161 | struct dwarf2_cu *); | |
1c379e20 | 2162 | |
ed2dc618 | 2163 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 2164 | |
ed2dc618 | 2165 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 2166 | |
95554aad TT |
2167 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
2168 | enum language); | |
10b3939b | 2169 | |
95554aad TT |
2170 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
2171 | enum language); | |
10b3939b | 2172 | |
f4dc4d17 DE |
2173 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
2174 | enum language); | |
2175 | ||
10b3939b DJ |
2176 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
2177 | struct dwarf2_per_cu_data *); | |
2178 | ||
ae038cb0 DJ |
2179 | static void dwarf2_mark (struct dwarf2_cu *); |
2180 | ||
2181 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
2182 | ||
b64f50a1 | 2183 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 2184 | struct dwarf2_per_cu_data *); |
673bfd45 | 2185 | |
f792889a | 2186 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 2187 | |
95554aad TT |
2188 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
2189 | enum language pretend_language); | |
2190 | ||
ed2dc618 | 2191 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 2192 | |
b303c6f6 AB |
2193 | /* Class, the destructor of which frees all allocated queue entries. This |
2194 | will only have work to do if an error was thrown while processing the | |
2195 | dwarf. If no error was thrown then the queue entries should have all | |
2196 | been processed, and freed, as we went along. */ | |
2197 | ||
2198 | class dwarf2_queue_guard | |
2199 | { | |
2200 | public: | |
2201 | dwarf2_queue_guard () = default; | |
2202 | ||
2203 | /* Free any entries remaining on the queue. There should only be | |
2204 | entries left if we hit an error while processing the dwarf. */ | |
2205 | ~dwarf2_queue_guard () | |
2206 | { | |
2207 | struct dwarf2_queue_item *item, *last; | |
2208 | ||
2209 | item = dwarf2_queue; | |
2210 | while (item) | |
2211 | { | |
2212 | /* Anything still marked queued is likely to be in an | |
2213 | inconsistent state, so discard it. */ | |
2214 | if (item->per_cu->queued) | |
2215 | { | |
2216 | if (item->per_cu->cu != NULL) | |
2217 | free_one_cached_comp_unit (item->per_cu); | |
2218 | item->per_cu->queued = 0; | |
2219 | } | |
2220 | ||
2221 | last = item; | |
2222 | item = item->next; | |
2223 | xfree (last); | |
2224 | } | |
2225 | ||
2226 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2227 | } | |
2228 | }; | |
2229 | ||
d721ba37 PA |
2230 | /* The return type of find_file_and_directory. Note, the enclosed |
2231 | string pointers are only valid while this object is valid. */ | |
2232 | ||
2233 | struct file_and_directory | |
2234 | { | |
2235 | /* The filename. This is never NULL. */ | |
2236 | const char *name; | |
2237 | ||
2238 | /* The compilation directory. NULL if not known. If we needed to | |
2239 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
2240 | points directly to the DW_AT_comp_dir string attribute owned by | |
2241 | the obstack that owns the DIE. */ | |
2242 | const char *comp_dir; | |
2243 | ||
2244 | /* If we needed to build a new string for comp_dir, this is what | |
2245 | owns the storage. */ | |
2246 | std::string comp_dir_storage; | |
2247 | }; | |
2248 | ||
2249 | static file_and_directory find_file_and_directory (struct die_info *die, | |
2250 | struct dwarf2_cu *cu); | |
9291a0cd TT |
2251 | |
2252 | static char *file_full_name (int file, struct line_header *lh, | |
2253 | const char *comp_dir); | |
2254 | ||
43988095 JK |
2255 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
2256 | enum class rcuh_kind { COMPILE, TYPE }; | |
2257 | ||
d521ce57 | 2258 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
2259 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
2260 | struct comp_unit_head *header, | |
36586728 | 2261 | struct dwarf2_section_info *section, |
d521ce57 | 2262 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 2263 | rcuh_kind section_kind); |
36586728 | 2264 | |
fd820528 | 2265 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
2266 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
2267 | int use_existing_cu, int keep, | |
3019eac3 DE |
2268 | die_reader_func_ftype *die_reader_func, void *data); |
2269 | ||
dee91e82 DE |
2270 | static void init_cutu_and_read_dies_simple |
2271 | (struct dwarf2_per_cu_data *this_cu, | |
2272 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 2273 | |
673bfd45 | 2274 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2275 | |
3019eac3 DE |
2276 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2277 | ||
57d63ce2 | 2278 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
2279 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2280 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 2281 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 2282 | |
ed2dc618 SM |
2283 | static struct dwp_file *get_dwp_file |
2284 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 2285 | |
3019eac3 | 2286 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2287 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2288 | |
2289 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2290 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2291 | |
89e63ee4 DE |
2292 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2293 | ||
3019eac3 DE |
2294 | static void free_dwo_file_cleanup (void *); |
2295 | ||
ed2dc618 SM |
2296 | struct free_dwo_file_cleanup_data |
2297 | { | |
2298 | struct dwo_file *dwo_file; | |
2299 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2300 | }; | |
2301 | ||
2302 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
95554aad | 2303 | |
1b80a9fa | 2304 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2305 | |
2306 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2307 | \f |
2308 | /* Various complaints about symbol reading that don't abort the process. */ | |
2309 | ||
2310 | static void | |
2311 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2312 | { | |
2313 | complaint (&symfile_complaints, | |
2314 | _("statement list doesn't fit in .debug_line section")); | |
2315 | } | |
2316 | ||
2317 | static void | |
2318 | dwarf2_debug_line_missing_file_complaint (void) | |
2319 | { | |
2320 | complaint (&symfile_complaints, | |
2321 | _(".debug_line section has line data without a file")); | |
2322 | } | |
2323 | ||
2324 | static void | |
2325 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2326 | { | |
2327 | complaint (&symfile_complaints, | |
2328 | _(".debug_line section has line " | |
2329 | "program sequence without an end")); | |
2330 | } | |
2331 | ||
2332 | static void | |
2333 | dwarf2_complex_location_expr_complaint (void) | |
2334 | { | |
2335 | complaint (&symfile_complaints, _("location expression too complex")); | |
2336 | } | |
2337 | ||
2338 | static void | |
2339 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2340 | int arg3) | |
2341 | { | |
2342 | complaint (&symfile_complaints, | |
2343 | _("const value length mismatch for '%s', got %d, expected %d"), | |
2344 | arg1, arg2, arg3); | |
2345 | } | |
2346 | ||
2347 | static void | |
2348 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2349 | { | |
2350 | complaint (&symfile_complaints, | |
2351 | _("debug info runs off end of %s section" | |
2352 | " [in module %s]"), | |
a32a8923 DE |
2353 | get_section_name (section), |
2354 | get_section_file_name (section)); | |
4390d890 | 2355 | } |
1b80a9fa | 2356 | |
4390d890 DE |
2357 | static void |
2358 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2359 | { | |
2360 | complaint (&symfile_complaints, | |
2361 | _("macro debug info contains a " | |
2362 | "malformed macro definition:\n`%s'"), | |
2363 | arg1); | |
2364 | } | |
2365 | ||
2366 | static void | |
2367 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2368 | { | |
2369 | complaint (&symfile_complaints, | |
2370 | _("invalid attribute class or form for '%s' in '%s'"), | |
2371 | arg1, arg2); | |
2372 | } | |
527f3840 JK |
2373 | |
2374 | /* Hash function for line_header_hash. */ | |
2375 | ||
2376 | static hashval_t | |
2377 | line_header_hash (const struct line_header *ofs) | |
2378 | { | |
9c541725 | 2379 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2380 | } |
2381 | ||
2382 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2383 | ||
2384 | static hashval_t | |
2385 | line_header_hash_voidp (const void *item) | |
2386 | { | |
9a3c8263 | 2387 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2388 | |
2389 | return line_header_hash (ofs); | |
2390 | } | |
2391 | ||
2392 | /* Equality function for line_header_hash. */ | |
2393 | ||
2394 | static int | |
2395 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2396 | { | |
9a3c8263 SM |
2397 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2398 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2399 | |
9c541725 | 2400 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2401 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2402 | } | |
2403 | ||
4390d890 | 2404 | \f |
9291a0cd | 2405 | |
31aa7e4e JB |
2406 | /* Read the given attribute value as an address, taking the attribute's |
2407 | form into account. */ | |
2408 | ||
2409 | static CORE_ADDR | |
2410 | attr_value_as_address (struct attribute *attr) | |
2411 | { | |
2412 | CORE_ADDR addr; | |
2413 | ||
2414 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2415 | { | |
2416 | /* Aside from a few clearly defined exceptions, attributes that | |
2417 | contain an address must always be in DW_FORM_addr form. | |
2418 | Unfortunately, some compilers happen to be violating this | |
2419 | requirement by encoding addresses using other forms, such | |
2420 | as DW_FORM_data4 for example. For those broken compilers, | |
2421 | we try to do our best, without any guarantee of success, | |
2422 | to interpret the address correctly. It would also be nice | |
2423 | to generate a complaint, but that would require us to maintain | |
2424 | a list of legitimate cases where a non-address form is allowed, | |
2425 | as well as update callers to pass in at least the CU's DWARF | |
2426 | version. This is more overhead than what we're willing to | |
2427 | expand for a pretty rare case. */ | |
2428 | addr = DW_UNSND (attr); | |
2429 | } | |
2430 | else | |
2431 | addr = DW_ADDR (attr); | |
2432 | ||
2433 | return addr; | |
2434 | } | |
2435 | ||
9291a0cd | 2436 | /* The suffix for an index file. */ |
437afbb8 JK |
2437 | #define INDEX4_SUFFIX ".gdb-index" |
2438 | #define INDEX5_SUFFIX ".debug_names" | |
2439 | #define DEBUG_STR_SUFFIX ".debug_str" | |
9291a0cd | 2440 | |
330cdd98 PA |
2441 | /* See declaration. */ |
2442 | ||
2443 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2444 | const dwarf2_debug_sections *names) | |
2445 | : objfile (objfile_) | |
2446 | { | |
2447 | if (names == NULL) | |
2448 | names = &dwarf2_elf_names; | |
2449 | ||
2450 | bfd *obfd = objfile->obfd; | |
2451 | ||
2452 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2453 | locate_sections (obfd, sec, *names); | |
2454 | } | |
2455 | ||
fc8e7e75 SM |
2456 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2457 | ||
330cdd98 PA |
2458 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2459 | { | |
2460 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2461 | free_cached_comp_units (); | |
2462 | ||
2463 | if (quick_file_names_table) | |
2464 | htab_delete (quick_file_names_table); | |
2465 | ||
2466 | if (line_header_hash) | |
2467 | htab_delete (line_header_hash); | |
2468 | ||
fc8e7e75 SM |
2469 | for (int ix = 0; ix < n_comp_units; ++ix) |
2470 | VEC_free (dwarf2_per_cu_ptr, all_comp_units[ix]->imported_symtabs); | |
2471 | ||
2472 | for (int ix = 0; ix < n_type_units; ++ix) | |
2473 | VEC_free (dwarf2_per_cu_ptr, | |
2474 | all_type_units[ix]->per_cu.imported_symtabs); | |
2475 | xfree (all_type_units); | |
2476 | ||
2477 | VEC_free (dwarf2_section_info_def, types); | |
2478 | ||
2479 | if (dwo_files != NULL) | |
2480 | free_dwo_files (dwo_files, objfile); | |
2481 | if (dwp_file != NULL) | |
2482 | gdb_bfd_unref (dwp_file->dbfd); | |
2483 | ||
2484 | if (dwz_file != NULL && dwz_file->dwz_bfd) | |
2485 | gdb_bfd_unref (dwz_file->dwz_bfd); | |
2486 | ||
2487 | if (index_table != NULL) | |
2488 | index_table->~mapped_index (); | |
2489 | ||
330cdd98 PA |
2490 | /* Everything else should be on the objfile obstack. */ |
2491 | } | |
2492 | ||
2493 | /* See declaration. */ | |
2494 | ||
2495 | void | |
2496 | dwarf2_per_objfile::free_cached_comp_units () | |
2497 | { | |
2498 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2499 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2500 | while (per_cu != NULL) | |
2501 | { | |
2502 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2503 | ||
fcd3b13d | 2504 | delete per_cu->cu; |
330cdd98 PA |
2505 | *last_chain = next_cu; |
2506 | per_cu = next_cu; | |
2507 | } | |
2508 | } | |
2509 | ||
c906108c | 2510 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2511 | information and return true if we have enough to do something. |
2512 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2513 | ELF names are used. */ | |
c906108c SS |
2514 | |
2515 | int | |
251d32d9 TG |
2516 | dwarf2_has_info (struct objfile *objfile, |
2517 | const struct dwarf2_debug_sections *names) | |
c906108c | 2518 | { |
97cbe998 SDJ |
2519 | if (objfile->flags & OBJF_READNEVER) |
2520 | return 0; | |
2521 | ||
ed2dc618 SM |
2522 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2523 | = get_dwarf2_per_objfile (objfile); | |
2524 | ||
2525 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2526 | { |
2527 | /* Initialize per-objfile state. */ | |
2528 | struct dwarf2_per_objfile *data | |
8d749320 | 2529 | = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_objfile); |
9a619af0 | 2530 | |
330cdd98 | 2531 | dwarf2_per_objfile = new (data) struct dwarf2_per_objfile (objfile, names); |
ed2dc618 | 2532 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2533 | } |
73869dc2 | 2534 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2535 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2536 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2537 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2538 | } |
2539 | ||
2540 | /* Return the containing section of virtual section SECTION. */ | |
2541 | ||
2542 | static struct dwarf2_section_info * | |
2543 | get_containing_section (const struct dwarf2_section_info *section) | |
2544 | { | |
2545 | gdb_assert (section->is_virtual); | |
2546 | return section->s.containing_section; | |
c906108c SS |
2547 | } |
2548 | ||
a32a8923 DE |
2549 | /* Return the bfd owner of SECTION. */ |
2550 | ||
2551 | static struct bfd * | |
2552 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2553 | { | |
73869dc2 DE |
2554 | if (section->is_virtual) |
2555 | { | |
2556 | section = get_containing_section (section); | |
2557 | gdb_assert (!section->is_virtual); | |
2558 | } | |
049412e3 | 2559 | return section->s.section->owner; |
a32a8923 DE |
2560 | } |
2561 | ||
2562 | /* Return the bfd section of SECTION. | |
2563 | Returns NULL if the section is not present. */ | |
2564 | ||
2565 | static asection * | |
2566 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2567 | { | |
73869dc2 DE |
2568 | if (section->is_virtual) |
2569 | { | |
2570 | section = get_containing_section (section); | |
2571 | gdb_assert (!section->is_virtual); | |
2572 | } | |
049412e3 | 2573 | return section->s.section; |
a32a8923 DE |
2574 | } |
2575 | ||
2576 | /* Return the name of SECTION. */ | |
2577 | ||
2578 | static const char * | |
2579 | get_section_name (const struct dwarf2_section_info *section) | |
2580 | { | |
2581 | asection *sectp = get_section_bfd_section (section); | |
2582 | ||
2583 | gdb_assert (sectp != NULL); | |
2584 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2585 | } | |
2586 | ||
2587 | /* Return the name of the file SECTION is in. */ | |
2588 | ||
2589 | static const char * | |
2590 | get_section_file_name (const struct dwarf2_section_info *section) | |
2591 | { | |
2592 | bfd *abfd = get_section_bfd_owner (section); | |
2593 | ||
2594 | return bfd_get_filename (abfd); | |
2595 | } | |
2596 | ||
2597 | /* Return the id of SECTION. | |
2598 | Returns 0 if SECTION doesn't exist. */ | |
2599 | ||
2600 | static int | |
2601 | get_section_id (const struct dwarf2_section_info *section) | |
2602 | { | |
2603 | asection *sectp = get_section_bfd_section (section); | |
2604 | ||
2605 | if (sectp == NULL) | |
2606 | return 0; | |
2607 | return sectp->id; | |
2608 | } | |
2609 | ||
2610 | /* Return the flags of SECTION. | |
73869dc2 | 2611 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2612 | |
2613 | static int | |
2614 | get_section_flags (const struct dwarf2_section_info *section) | |
2615 | { | |
2616 | asection *sectp = get_section_bfd_section (section); | |
2617 | ||
2618 | gdb_assert (sectp != NULL); | |
2619 | return bfd_get_section_flags (sectp->owner, sectp); | |
2620 | } | |
2621 | ||
251d32d9 TG |
2622 | /* When loading sections, we look either for uncompressed section or for |
2623 | compressed section names. */ | |
233a11ab CS |
2624 | |
2625 | static int | |
251d32d9 TG |
2626 | section_is_p (const char *section_name, |
2627 | const struct dwarf2_section_names *names) | |
233a11ab | 2628 | { |
251d32d9 TG |
2629 | if (names->normal != NULL |
2630 | && strcmp (section_name, names->normal) == 0) | |
2631 | return 1; | |
2632 | if (names->compressed != NULL | |
2633 | && strcmp (section_name, names->compressed) == 0) | |
2634 | return 1; | |
2635 | return 0; | |
233a11ab CS |
2636 | } |
2637 | ||
330cdd98 | 2638 | /* See declaration. */ |
c906108c | 2639 | |
330cdd98 PA |
2640 | void |
2641 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2642 | const dwarf2_debug_sections &names) | |
c906108c | 2643 | { |
dc7650b8 | 2644 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2645 | |
dc7650b8 JK |
2646 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2647 | { | |
2648 | } | |
330cdd98 | 2649 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2650 | { |
330cdd98 PA |
2651 | this->info.s.section = sectp; |
2652 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2653 | } |
330cdd98 | 2654 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2655 | { |
330cdd98 PA |
2656 | this->abbrev.s.section = sectp; |
2657 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2658 | } |
330cdd98 | 2659 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2660 | { |
330cdd98 PA |
2661 | this->line.s.section = sectp; |
2662 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2663 | } |
330cdd98 | 2664 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2665 | { |
330cdd98 PA |
2666 | this->loc.s.section = sectp; |
2667 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2668 | } |
330cdd98 | 2669 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2670 | { |
330cdd98 PA |
2671 | this->loclists.s.section = sectp; |
2672 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2673 | } |
330cdd98 | 2674 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2675 | { |
330cdd98 PA |
2676 | this->macinfo.s.section = sectp; |
2677 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2678 | } |
330cdd98 | 2679 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2680 | { |
330cdd98 PA |
2681 | this->macro.s.section = sectp; |
2682 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2683 | } |
330cdd98 | 2684 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2685 | { |
330cdd98 PA |
2686 | this->str.s.section = sectp; |
2687 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2688 | } |
330cdd98 | 2689 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2690 | { |
330cdd98 PA |
2691 | this->line_str.s.section = sectp; |
2692 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2693 | } |
330cdd98 | 2694 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2695 | { |
330cdd98 PA |
2696 | this->addr.s.section = sectp; |
2697 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2698 | } |
330cdd98 | 2699 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2700 | { |
330cdd98 PA |
2701 | this->frame.s.section = sectp; |
2702 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2703 | } |
330cdd98 | 2704 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2705 | { |
330cdd98 PA |
2706 | this->eh_frame.s.section = sectp; |
2707 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2708 | } |
330cdd98 | 2709 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2710 | { |
330cdd98 PA |
2711 | this->ranges.s.section = sectp; |
2712 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2713 | } |
330cdd98 | 2714 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2715 | { |
330cdd98 PA |
2716 | this->rnglists.s.section = sectp; |
2717 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2718 | } |
330cdd98 | 2719 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2720 | { |
8b70b953 TT |
2721 | struct dwarf2_section_info type_section; |
2722 | ||
2723 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2724 | type_section.s.section = sectp; |
8b70b953 TT |
2725 | type_section.size = bfd_get_section_size (sectp); |
2726 | ||
330cdd98 | 2727 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2728 | &type_section); |
348e048f | 2729 | } |
330cdd98 | 2730 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2731 | { |
330cdd98 PA |
2732 | this->gdb_index.s.section = sectp; |
2733 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2734 | } |
927aa2e7 JK |
2735 | else if (section_is_p (sectp->name, &names.debug_names)) |
2736 | { | |
2737 | this->debug_names.s.section = sectp; | |
2738 | this->debug_names.size = bfd_get_section_size (sectp); | |
2739 | } | |
2740 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2741 | { | |
2742 | this->debug_aranges.s.section = sectp; | |
2743 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2744 | } | |
dce234bc | 2745 | |
b4e1fd61 | 2746 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2747 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2748 | this->has_section_at_zero = true; |
c906108c SS |
2749 | } |
2750 | ||
fceca515 DE |
2751 | /* A helper function that decides whether a section is empty, |
2752 | or not present. */ | |
9e0ac564 TT |
2753 | |
2754 | static int | |
19ac8c2e | 2755 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2756 | { |
73869dc2 DE |
2757 | if (section->is_virtual) |
2758 | return section->size == 0; | |
049412e3 | 2759 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2760 | } |
2761 | ||
3019eac3 DE |
2762 | /* Read the contents of the section INFO. |
2763 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2764 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2765 | of the DWO file. | |
dce234bc | 2766 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2767 | |
dce234bc PP |
2768 | static void |
2769 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2770 | { |
a32a8923 | 2771 | asection *sectp; |
3019eac3 | 2772 | bfd *abfd; |
dce234bc | 2773 | gdb_byte *buf, *retbuf; |
c906108c | 2774 | |
be391dca TT |
2775 | if (info->readin) |
2776 | return; | |
dce234bc | 2777 | info->buffer = NULL; |
be391dca | 2778 | info->readin = 1; |
188dd5d6 | 2779 | |
9e0ac564 | 2780 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2781 | return; |
c906108c | 2782 | |
a32a8923 | 2783 | sectp = get_section_bfd_section (info); |
3019eac3 | 2784 | |
73869dc2 DE |
2785 | /* If this is a virtual section we need to read in the real one first. */ |
2786 | if (info->is_virtual) | |
2787 | { | |
2788 | struct dwarf2_section_info *containing_section = | |
2789 | get_containing_section (info); | |
2790 | ||
2791 | gdb_assert (sectp != NULL); | |
2792 | if ((sectp->flags & SEC_RELOC) != 0) | |
2793 | { | |
2794 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2795 | " supported in section %s [in module %s]"), | |
2796 | get_section_name (info), get_section_file_name (info)); | |
2797 | } | |
2798 | dwarf2_read_section (objfile, containing_section); | |
2799 | /* Other code should have already caught virtual sections that don't | |
2800 | fit. */ | |
2801 | gdb_assert (info->virtual_offset + info->size | |
2802 | <= containing_section->size); | |
2803 | /* If the real section is empty or there was a problem reading the | |
2804 | section we shouldn't get here. */ | |
2805 | gdb_assert (containing_section->buffer != NULL); | |
2806 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2807 | return; | |
2808 | } | |
2809 | ||
4bf44c1c TT |
2810 | /* If the section has relocations, we must read it ourselves. |
2811 | Otherwise we attach it to the BFD. */ | |
2812 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2813 | { |
d521ce57 | 2814 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2815 | return; |
dce234bc | 2816 | } |
dce234bc | 2817 | |
224c3ddb | 2818 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2819 | info->buffer = buf; |
dce234bc PP |
2820 | |
2821 | /* When debugging .o files, we may need to apply relocations; see | |
2822 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2823 | We never compress sections in .o files, so we only need to | |
2824 | try this when the section is not compressed. */ | |
ac8035ab | 2825 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2826 | if (retbuf != NULL) |
2827 | { | |
2828 | info->buffer = retbuf; | |
2829 | return; | |
2830 | } | |
2831 | ||
a32a8923 DE |
2832 | abfd = get_section_bfd_owner (info); |
2833 | gdb_assert (abfd != NULL); | |
2834 | ||
dce234bc PP |
2835 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2836 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2837 | { |
2838 | error (_("Dwarf Error: Can't read DWARF data" | |
2839 | " in section %s [in module %s]"), | |
2840 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2841 | } | |
dce234bc PP |
2842 | } |
2843 | ||
9e0ac564 TT |
2844 | /* A helper function that returns the size of a section in a safe way. |
2845 | If you are positive that the section has been read before using the | |
2846 | size, then it is safe to refer to the dwarf2_section_info object's | |
2847 | "size" field directly. In other cases, you must call this | |
2848 | function, because for compressed sections the size field is not set | |
2849 | correctly until the section has been read. */ | |
2850 | ||
2851 | static bfd_size_type | |
2852 | dwarf2_section_size (struct objfile *objfile, | |
2853 | struct dwarf2_section_info *info) | |
2854 | { | |
2855 | if (!info->readin) | |
2856 | dwarf2_read_section (objfile, info); | |
2857 | return info->size; | |
2858 | } | |
2859 | ||
dce234bc | 2860 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2861 | SECTION_NAME. */ |
af34e669 | 2862 | |
dce234bc | 2863 | void |
3017a003 TG |
2864 | dwarf2_get_section_info (struct objfile *objfile, |
2865 | enum dwarf2_section_enum sect, | |
d521ce57 | 2866 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2867 | bfd_size_type *sizep) |
2868 | { | |
2869 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2870 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2871 | dwarf2_objfile_data_key); | |
dce234bc | 2872 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2873 | |
2874 | /* We may see an objfile without any DWARF, in which case we just | |
2875 | return nothing. */ | |
2876 | if (data == NULL) | |
2877 | { | |
2878 | *sectp = NULL; | |
2879 | *bufp = NULL; | |
2880 | *sizep = 0; | |
2881 | return; | |
2882 | } | |
3017a003 TG |
2883 | switch (sect) |
2884 | { | |
2885 | case DWARF2_DEBUG_FRAME: | |
2886 | info = &data->frame; | |
2887 | break; | |
2888 | case DWARF2_EH_FRAME: | |
2889 | info = &data->eh_frame; | |
2890 | break; | |
2891 | default: | |
2892 | gdb_assert_not_reached ("unexpected section"); | |
2893 | } | |
dce234bc | 2894 | |
9e0ac564 | 2895 | dwarf2_read_section (objfile, info); |
dce234bc | 2896 | |
a32a8923 | 2897 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2898 | *bufp = info->buffer; |
2899 | *sizep = info->size; | |
2900 | } | |
2901 | ||
36586728 TT |
2902 | /* A helper function to find the sections for a .dwz file. */ |
2903 | ||
2904 | static void | |
2905 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2906 | { | |
9a3c8263 | 2907 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2908 | |
2909 | /* Note that we only support the standard ELF names, because .dwz | |
2910 | is ELF-only (at the time of writing). */ | |
2911 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2912 | { | |
049412e3 | 2913 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2914 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2915 | } | |
2916 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2917 | { | |
049412e3 | 2918 | dwz_file->info.s.section = sectp; |
36586728 TT |
2919 | dwz_file->info.size = bfd_get_section_size (sectp); |
2920 | } | |
2921 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2922 | { | |
049412e3 | 2923 | dwz_file->str.s.section = sectp; |
36586728 TT |
2924 | dwz_file->str.size = bfd_get_section_size (sectp); |
2925 | } | |
2926 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2927 | { | |
049412e3 | 2928 | dwz_file->line.s.section = sectp; |
36586728 TT |
2929 | dwz_file->line.size = bfd_get_section_size (sectp); |
2930 | } | |
2931 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2932 | { | |
049412e3 | 2933 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2934 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2935 | } | |
2ec9a5e0 TT |
2936 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2937 | { | |
049412e3 | 2938 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2939 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2940 | } | |
927aa2e7 JK |
2941 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2942 | { | |
2943 | dwz_file->debug_names.s.section = sectp; | |
2944 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2945 | } | |
36586728 TT |
2946 | } |
2947 | ||
4db1a1dc TT |
2948 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2949 | there is no .gnu_debugaltlink section in the file. Error if there | |
2950 | is such a section but the file cannot be found. */ | |
36586728 TT |
2951 | |
2952 | static struct dwz_file * | |
ed2dc618 | 2953 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2954 | { |
36586728 TT |
2955 | const char *filename; |
2956 | struct dwz_file *result; | |
acd13123 | 2957 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2958 | size_t buildid_len; |
2959 | bfd_byte *buildid; | |
36586728 TT |
2960 | |
2961 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2962 | return dwarf2_per_objfile->dwz_file; | |
2963 | ||
4db1a1dc | 2964 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2965 | gdb::unique_xmalloc_ptr<char> data |
2966 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2967 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2968 | if (data == NULL) |
2969 | { | |
2970 | if (bfd_get_error () == bfd_error_no_error) | |
2971 | return NULL; | |
2972 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2973 | bfd_errmsg (bfd_get_error ())); | |
2974 | } | |
791afaa2 TT |
2975 | |
2976 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2977 | |
acd13123 TT |
2978 | buildid_len = (size_t) buildid_len_arg; |
2979 | ||
791afaa2 | 2980 | filename = data.get (); |
d721ba37 PA |
2981 | |
2982 | std::string abs_storage; | |
36586728 TT |
2983 | if (!IS_ABSOLUTE_PATH (filename)) |
2984 | { | |
14278e1f TT |
2985 | gdb::unique_xmalloc_ptr<char> abs |
2986 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2987 | |
14278e1f | 2988 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2989 | filename = abs_storage.c_str (); |
36586728 TT |
2990 | } |
2991 | ||
dc294be5 TT |
2992 | /* First try the file name given in the section. If that doesn't |
2993 | work, try to use the build-id instead. */ | |
192b62ce | 2994 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2995 | if (dwz_bfd != NULL) |
36586728 | 2996 | { |
192b62ce TT |
2997 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2998 | dwz_bfd.release (); | |
36586728 TT |
2999 | } |
3000 | ||
dc294be5 TT |
3001 | if (dwz_bfd == NULL) |
3002 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
3003 | ||
3004 | if (dwz_bfd == NULL) | |
3005 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
3006 | objfile_name (dwarf2_per_objfile->objfile)); | |
3007 | ||
36586728 TT |
3008 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
3009 | struct dwz_file); | |
192b62ce | 3010 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 3011 | |
192b62ce | 3012 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 | 3013 | |
192b62ce | 3014 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 3015 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
3016 | return result; |
3017 | } | |
9291a0cd | 3018 | \f |
7b9f3c50 DE |
3019 | /* DWARF quick_symbols_functions support. */ |
3020 | ||
3021 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
3022 | unique line tables, so we maintain a separate table of all .debug_line | |
3023 | derived entries to support the sharing. | |
3024 | All the quick functions need is the list of file names. We discard the | |
3025 | line_header when we're done and don't need to record it here. */ | |
3026 | struct quick_file_names | |
3027 | { | |
094b34ac DE |
3028 | /* The data used to construct the hash key. */ |
3029 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
3030 | |
3031 | /* The number of entries in file_names, real_names. */ | |
3032 | unsigned int num_file_names; | |
3033 | ||
3034 | /* The file names from the line table, after being run through | |
3035 | file_full_name. */ | |
3036 | const char **file_names; | |
3037 | ||
3038 | /* The file names from the line table after being run through | |
3039 | gdb_realpath. These are computed lazily. */ | |
3040 | const char **real_names; | |
3041 | }; | |
3042 | ||
3043 | /* When using the index (and thus not using psymtabs), each CU has an | |
3044 | object of this type. This is used to hold information needed by | |
3045 | the various "quick" methods. */ | |
3046 | struct dwarf2_per_cu_quick_data | |
3047 | { | |
3048 | /* The file table. This can be NULL if there was no file table | |
3049 | or it's currently not read in. | |
3050 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
3051 | struct quick_file_names *file_names; | |
3052 | ||
3053 | /* The corresponding symbol table. This is NULL if symbols for this | |
3054 | CU have not yet been read. */ | |
43f3e411 | 3055 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
3056 | |
3057 | /* A temporary mark bit used when iterating over all CUs in | |
3058 | expand_symtabs_matching. */ | |
3059 | unsigned int mark : 1; | |
3060 | ||
3061 | /* True if we've tried to read the file table and found there isn't one. | |
3062 | There will be no point in trying to read it again next time. */ | |
3063 | unsigned int no_file_data : 1; | |
3064 | }; | |
3065 | ||
094b34ac DE |
3066 | /* Utility hash function for a stmt_list_hash. */ |
3067 | ||
3068 | static hashval_t | |
3069 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
3070 | { | |
3071 | hashval_t v = 0; | |
3072 | ||
3073 | if (stmt_list_hash->dwo_unit != NULL) | |
3074 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 3075 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
3076 | return v; |
3077 | } | |
3078 | ||
3079 | /* Utility equality function for a stmt_list_hash. */ | |
3080 | ||
3081 | static int | |
3082 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
3083 | const struct stmt_list_hash *rhs) | |
3084 | { | |
3085 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
3086 | return 0; | |
3087 | if (lhs->dwo_unit != NULL | |
3088 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
3089 | return 0; | |
3090 | ||
9c541725 | 3091 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
3092 | } |
3093 | ||
7b9f3c50 DE |
3094 | /* Hash function for a quick_file_names. */ |
3095 | ||
3096 | static hashval_t | |
3097 | hash_file_name_entry (const void *e) | |
3098 | { | |
9a3c8263 SM |
3099 | const struct quick_file_names *file_data |
3100 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 3101 | |
094b34ac | 3102 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
3103 | } |
3104 | ||
3105 | /* Equality function for a quick_file_names. */ | |
3106 | ||
3107 | static int | |
3108 | eq_file_name_entry (const void *a, const void *b) | |
3109 | { | |
9a3c8263 SM |
3110 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
3111 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 3112 | |
094b34ac | 3113 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
3114 | } |
3115 | ||
3116 | /* Delete function for a quick_file_names. */ | |
3117 | ||
3118 | static void | |
3119 | delete_file_name_entry (void *e) | |
3120 | { | |
9a3c8263 | 3121 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
3122 | int i; |
3123 | ||
3124 | for (i = 0; i < file_data->num_file_names; ++i) | |
3125 | { | |
3126 | xfree ((void*) file_data->file_names[i]); | |
3127 | if (file_data->real_names) | |
3128 | xfree ((void*) file_data->real_names[i]); | |
3129 | } | |
3130 | ||
3131 | /* The space for the struct itself lives on objfile_obstack, | |
3132 | so we don't free it here. */ | |
3133 | } | |
3134 | ||
3135 | /* Create a quick_file_names hash table. */ | |
3136 | ||
3137 | static htab_t | |
3138 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
3139 | { | |
3140 | return htab_create_alloc (nr_initial_entries, | |
3141 | hash_file_name_entry, eq_file_name_entry, | |
3142 | delete_file_name_entry, xcalloc, xfree); | |
3143 | } | |
9291a0cd | 3144 | |
918dd910 JK |
3145 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
3146 | have to be created afterwards. You should call age_cached_comp_units after | |
3147 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
3148 | ||
3149 | static void | |
3150 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
3151 | { | |
3019eac3 | 3152 | if (per_cu->is_debug_types) |
e5fe5e75 | 3153 | load_full_type_unit (per_cu); |
918dd910 | 3154 | else |
95554aad | 3155 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 3156 | |
cc12ce38 DE |
3157 | if (per_cu->cu == NULL) |
3158 | return; /* Dummy CU. */ | |
2dc860c0 DE |
3159 | |
3160 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
3161 | } |
3162 | ||
a0f42c21 | 3163 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 3164 | |
9291a0cd | 3165 | static void |
a0f42c21 | 3166 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3167 | { |
ed2dc618 | 3168 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 3169 | |
f4dc4d17 DE |
3170 | /* Skip type_unit_groups, reading the type units they contain |
3171 | is handled elsewhere. */ | |
3172 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
3173 | return; | |
3174 | ||
b303c6f6 AB |
3175 | /* The destructor of dwarf2_queue_guard frees any entries left on |
3176 | the queue. After this point we're guaranteed to leave this function | |
3177 | with the dwarf queue empty. */ | |
3178 | dwarf2_queue_guard q_guard; | |
9291a0cd | 3179 | |
95554aad | 3180 | if (dwarf2_per_objfile->using_index |
43f3e411 | 3181 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
3182 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
3183 | { | |
3184 | queue_comp_unit (per_cu, language_minimal); | |
3185 | load_cu (per_cu); | |
89e63ee4 DE |
3186 | |
3187 | /* If we just loaded a CU from a DWO, and we're working with an index | |
3188 | that may badly handle TUs, load all the TUs in that DWO as well. | |
3189 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
3190 | if (!per_cu->is_debug_types | |
cc12ce38 | 3191 | && per_cu->cu != NULL |
89e63ee4 DE |
3192 | && per_cu->cu->dwo_unit != NULL |
3193 | && dwarf2_per_objfile->index_table != NULL | |
3194 | && dwarf2_per_objfile->index_table->version <= 7 | |
3195 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 3196 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 3197 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 3198 | } |
9291a0cd | 3199 | |
ed2dc618 | 3200 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
3201 | |
3202 | /* Age the cache, releasing compilation units that have not | |
3203 | been used recently. */ | |
ed2dc618 | 3204 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
3205 | } |
3206 | ||
3207 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
3208 | the objfile from which this CU came. Returns the resulting symbol | |
3209 | table. */ | |
2fdf6df6 | 3210 | |
43f3e411 | 3211 | static struct compunit_symtab * |
a0f42c21 | 3212 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3213 | { |
ed2dc618 SM |
3214 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3215 | ||
95554aad | 3216 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 3217 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 3218 | { |
ed2dc618 SM |
3219 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, |
3220 | dwarf2_per_objfile); | |
c83dd867 | 3221 | scoped_restore decrementer = increment_reading_symtab (); |
a0f42c21 | 3222 | dw2_do_instantiate_symtab (per_cu); |
ed2dc618 | 3223 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd TT |
3224 | do_cleanups (back_to); |
3225 | } | |
f194fefb | 3226 | |
43f3e411 | 3227 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
3228 | } |
3229 | ||
8832e7e3 | 3230 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
3231 | |
3232 | This is intended for loops like: | |
3233 | ||
3234 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3235 | + dwarf2_per_objfile->n_type_units); ++i) | |
3236 | { | |
8832e7e3 | 3237 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
3238 | |
3239 | ...; | |
3240 | } | |
3241 | */ | |
2fdf6df6 | 3242 | |
1fd400ff | 3243 | static struct dwarf2_per_cu_data * |
ed2dc618 SM |
3244 | dw2_get_cutu (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3245 | int index) | |
1fd400ff TT |
3246 | { |
3247 | if (index >= dwarf2_per_objfile->n_comp_units) | |
3248 | { | |
f4dc4d17 | 3249 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
3250 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
3251 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
3252 | } |
3253 | ||
3254 | return dwarf2_per_objfile->all_comp_units[index]; | |
3255 | } | |
3256 | ||
8832e7e3 DE |
3257 | /* Return the CU given its index. |
3258 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
3259 | refers to a CU. */ | |
f4dc4d17 DE |
3260 | |
3261 | static struct dwarf2_per_cu_data * | |
ed2dc618 | 3262 | dw2_get_cu (struct dwarf2_per_objfile *dwarf2_per_objfile, int index) |
f4dc4d17 | 3263 | { |
8832e7e3 | 3264 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 3265 | |
1fd400ff TT |
3266 | return dwarf2_per_objfile->all_comp_units[index]; |
3267 | } | |
3268 | ||
4b514bc8 JK |
3269 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
3270 | objfile_obstack, and constructed with the specified field | |
3271 | values. */ | |
3272 | ||
3273 | static dwarf2_per_cu_data * | |
ed2dc618 | 3274 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
3275 | struct dwarf2_section_info *section, |
3276 | int is_dwz, | |
3277 | sect_offset sect_off, ULONGEST length) | |
3278 | { | |
ed2dc618 | 3279 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
3280 | dwarf2_per_cu_data *the_cu |
3281 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3282 | struct dwarf2_per_cu_data); | |
3283 | the_cu->sect_off = sect_off; | |
3284 | the_cu->length = length; | |
e3b94546 | 3285 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
3286 | the_cu->section = section; |
3287 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3288 | struct dwarf2_per_cu_quick_data); | |
3289 | the_cu->is_dwz = is_dwz; | |
3290 | return the_cu; | |
3291 | } | |
3292 | ||
2ec9a5e0 TT |
3293 | /* A helper for create_cus_from_index that handles a given list of |
3294 | CUs. */ | |
2fdf6df6 | 3295 | |
74a0d9f6 | 3296 | static void |
2ec9a5e0 TT |
3297 | create_cus_from_index_list (struct objfile *objfile, |
3298 | const gdb_byte *cu_list, offset_type n_elements, | |
3299 | struct dwarf2_section_info *section, | |
3300 | int is_dwz, | |
3301 | int base_offset) | |
9291a0cd TT |
3302 | { |
3303 | offset_type i; | |
ed2dc618 SM |
3304 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3305 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3306 | |
2ec9a5e0 | 3307 | for (i = 0; i < n_elements; i += 2) |
9291a0cd | 3308 | { |
74a0d9f6 | 3309 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3310 | |
3311 | sect_offset sect_off | |
3312 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3313 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3314 | cu_list += 2 * 8; |
3315 | ||
4b514bc8 | 3316 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] |
ed2dc618 SM |
3317 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3318 | sect_off, length); | |
9291a0cd | 3319 | } |
9291a0cd TT |
3320 | } |
3321 | ||
2ec9a5e0 | 3322 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3323 | the CU objects for this objfile. */ |
2ec9a5e0 | 3324 | |
74a0d9f6 | 3325 | static void |
2ec9a5e0 TT |
3326 | create_cus_from_index (struct objfile *objfile, |
3327 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
3328 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3329 | { | |
3330 | struct dwz_file *dwz; | |
ed2dc618 SM |
3331 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3332 | = get_dwarf2_per_objfile (objfile); | |
2ec9a5e0 TT |
3333 | |
3334 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
3335 | dwarf2_per_objfile->all_comp_units = |
3336 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
3337 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 3338 | |
74a0d9f6 JK |
3339 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
3340 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
3341 | |
3342 | if (dwz_elements == 0) | |
74a0d9f6 | 3343 | return; |
2ec9a5e0 | 3344 | |
ed2dc618 | 3345 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
74a0d9f6 JK |
3346 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
3347 | cu_list_elements / 2); | |
2ec9a5e0 TT |
3348 | } |
3349 | ||
1fd400ff | 3350 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3351 | |
74a0d9f6 | 3352 | static void |
673bfd45 | 3353 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 3354 | struct dwarf2_section_info *section, |
673bfd45 DE |
3355 | const gdb_byte *bytes, |
3356 | offset_type elements) | |
1fd400ff TT |
3357 | { |
3358 | offset_type i; | |
673bfd45 | 3359 | htab_t sig_types_hash; |
ed2dc618 SM |
3360 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3361 | = get_dwarf2_per_objfile (objfile); | |
1fd400ff | 3362 | |
6aa5f3a6 DE |
3363 | dwarf2_per_objfile->n_type_units |
3364 | = dwarf2_per_objfile->n_allocated_type_units | |
3365 | = elements / 3; | |
8d749320 SM |
3366 | dwarf2_per_objfile->all_type_units = |
3367 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3368 | |
673bfd45 | 3369 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
3370 | |
3371 | for (i = 0; i < elements; i += 3) | |
3372 | { | |
52dc124a | 3373 | struct signatured_type *sig_type; |
9c541725 | 3374 | ULONGEST signature; |
1fd400ff | 3375 | void **slot; |
9c541725 | 3376 | cu_offset type_offset_in_tu; |
1fd400ff | 3377 | |
74a0d9f6 | 3378 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3379 | sect_offset sect_off |
3380 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3381 | type_offset_in_tu | |
3382 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3383 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3384 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3385 | bytes += 3 * 8; | |
3386 | ||
52dc124a | 3387 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3388 | struct signatured_type); |
52dc124a | 3389 | sig_type->signature = signature; |
9c541725 | 3390 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3391 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3392 | sig_type->per_cu.section = section; |
9c541725 | 3393 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3394 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3395 | sig_type->per_cu.v.quick |
1fd400ff TT |
3396 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3397 | struct dwarf2_per_cu_quick_data); | |
3398 | ||
52dc124a DE |
3399 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3400 | *slot = sig_type; | |
1fd400ff | 3401 | |
b4dd5633 | 3402 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
3403 | } |
3404 | ||
673bfd45 | 3405 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3406 | } |
3407 | ||
927aa2e7 JK |
3408 | /* Create the signatured type hash table from .debug_names. */ |
3409 | ||
3410 | static void | |
3411 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3412 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3413 | const mapped_debug_names &map, |
3414 | struct dwarf2_section_info *section, | |
3415 | struct dwarf2_section_info *abbrev_section) | |
3416 | { | |
ed2dc618 SM |
3417 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3418 | ||
927aa2e7 JK |
3419 | dwarf2_read_section (objfile, section); |
3420 | dwarf2_read_section (objfile, abbrev_section); | |
3421 | ||
3422 | dwarf2_per_objfile->n_type_units | |
3423 | = dwarf2_per_objfile->n_allocated_type_units | |
3424 | = map.tu_count; | |
3425 | dwarf2_per_objfile->all_type_units | |
3426 | = XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
3427 | ||
3428 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3429 | ||
3430 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3431 | { | |
3432 | struct signatured_type *sig_type; | |
3433 | ULONGEST signature; | |
3434 | void **slot; | |
3435 | cu_offset type_offset_in_tu; | |
3436 | ||
3437 | sect_offset sect_off | |
3438 | = (sect_offset) (extract_unsigned_integer | |
3439 | (map.tu_table_reordered + i * map.offset_size, | |
3440 | map.offset_size, | |
3441 | map.dwarf5_byte_order)); | |
3442 | ||
3443 | comp_unit_head cu_header; | |
ed2dc618 SM |
3444 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3445 | abbrev_section, | |
927aa2e7 JK |
3446 | section->buffer + to_underlying (sect_off), |
3447 | rcuh_kind::TYPE); | |
3448 | ||
3449 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3450 | struct signatured_type); | |
3451 | sig_type->signature = cu_header.signature; | |
3452 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3453 | sig_type->per_cu.is_debug_types = 1; | |
3454 | sig_type->per_cu.section = section; | |
3455 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3456 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3457 | sig_type->per_cu.v.quick |
3458 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3459 | struct dwarf2_per_cu_quick_data); | |
3460 | ||
3461 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3462 | *slot = sig_type; | |
3463 | ||
3464 | dwarf2_per_objfile->all_type_units[i] = sig_type; | |
3465 | } | |
3466 | ||
3467 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3468 | } | |
3469 | ||
9291a0cd TT |
3470 | /* Read the address map data from the mapped index, and use it to |
3471 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3472 | |
9291a0cd | 3473 | static void |
ed2dc618 SM |
3474 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3475 | struct mapped_index *index) | |
9291a0cd | 3476 | { |
ed2dc618 | 3477 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3478 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3479 | const gdb_byte *iter, *end; |
9291a0cd | 3480 | struct addrmap *mutable_map; |
9291a0cd TT |
3481 | CORE_ADDR baseaddr; |
3482 | ||
8268c778 PA |
3483 | auto_obstack temp_obstack; |
3484 | ||
9291a0cd TT |
3485 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3486 | ||
f00a2de2 PA |
3487 | iter = index->address_table.data (); |
3488 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3489 | |
3490 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3491 | ||
3492 | while (iter < end) | |
3493 | { | |
3494 | ULONGEST hi, lo, cu_index; | |
3495 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3496 | iter += 8; | |
3497 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3498 | iter += 8; | |
3499 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3500 | iter += 4; | |
f652bce2 | 3501 | |
24a55014 | 3502 | if (lo > hi) |
f652bce2 | 3503 | { |
24a55014 DE |
3504 | complaint (&symfile_complaints, |
3505 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 3506 | hex_string (lo), hex_string (hi)); |
24a55014 | 3507 | continue; |
f652bce2 | 3508 | } |
24a55014 DE |
3509 | |
3510 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
3511 | { |
3512 | complaint (&symfile_complaints, | |
3513 | _(".gdb_index address table has invalid CU number %u"), | |
3514 | (unsigned) cu_index); | |
24a55014 | 3515 | continue; |
f652bce2 | 3516 | } |
24a55014 | 3517 | |
3e29f34a MR |
3518 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3519 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
ed2dc618 SM |
3520 | addrmap_set_empty (mutable_map, lo, hi - 1, |
3521 | dw2_get_cutu (dwarf2_per_objfile, cu_index)); | |
9291a0cd TT |
3522 | } |
3523 | ||
3524 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3525 | &objfile->objfile_obstack); | |
9291a0cd TT |
3526 | } |
3527 | ||
927aa2e7 JK |
3528 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3529 | populate the objfile's psymtabs_addrmap. */ | |
3530 | ||
3531 | static void | |
ed2dc618 | 3532 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3533 | struct dwarf2_section_info *section) |
3534 | { | |
ed2dc618 | 3535 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3536 | bfd *abfd = objfile->obfd; |
3537 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3538 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3539 | SECT_OFF_TEXT (objfile)); | |
3540 | ||
3541 | auto_obstack temp_obstack; | |
3542 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3543 | ||
3544 | std::unordered_map<sect_offset, | |
3545 | dwarf2_per_cu_data *, | |
3546 | gdb::hash_enum<sect_offset>> | |
3547 | debug_info_offset_to_per_cu; | |
3548 | for (int cui = 0; cui < dwarf2_per_objfile->n_comp_units; ++cui) | |
3549 | { | |
ed2dc618 | 3550 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, cui); |
927aa2e7 JK |
3551 | const auto insertpair |
3552 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3553 | if (!insertpair.second) | |
3554 | { | |
3555 | warning (_("Section .debug_aranges in %s has duplicate " | |
3556 | "debug_info_offset %u, ignoring .debug_aranges."), | |
3557 | objfile_name (objfile), to_underlying (per_cu->sect_off)); | |
3558 | return; | |
3559 | } | |
3560 | } | |
3561 | ||
3562 | dwarf2_read_section (objfile, section); | |
3563 | ||
3564 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3565 | ||
3566 | const gdb_byte *addr = section->buffer; | |
3567 | ||
3568 | while (addr < section->buffer + section->size) | |
3569 | { | |
3570 | const gdb_byte *const entry_addr = addr; | |
3571 | unsigned int bytes_read; | |
3572 | ||
3573 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3574 | &bytes_read); | |
3575 | addr += bytes_read; | |
3576 | ||
3577 | const gdb_byte *const entry_end = addr + entry_length; | |
3578 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3579 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3580 | if (addr + entry_length > section->buffer + section->size) | |
3581 | { | |
3582 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3583 | "length %s exceeds section length %s, " | |
3584 | "ignoring .debug_aranges."), | |
3585 | objfile_name (objfile), entry_addr - section->buffer, | |
3586 | plongest (bytes_read + entry_length), | |
3587 | pulongest (section->size)); | |
3588 | return; | |
3589 | } | |
3590 | ||
3591 | /* The version number. */ | |
3592 | const uint16_t version = read_2_bytes (abfd, addr); | |
3593 | addr += 2; | |
3594 | if (version != 2) | |
3595 | { | |
3596 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3597 | "has unsupported version %d, ignoring .debug_aranges."), | |
3598 | objfile_name (objfile), entry_addr - section->buffer, | |
3599 | version); | |
3600 | return; | |
3601 | } | |
3602 | ||
3603 | const uint64_t debug_info_offset | |
3604 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3605 | addr += offset_size; | |
3606 | const auto per_cu_it | |
3607 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3608 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3609 | { | |
3610 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3611 | "debug_info_offset %s does not exists, " | |
3612 | "ignoring .debug_aranges."), | |
3613 | objfile_name (objfile), entry_addr - section->buffer, | |
3614 | pulongest (debug_info_offset)); | |
3615 | return; | |
3616 | } | |
3617 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3618 | ||
3619 | const uint8_t address_size = *addr++; | |
3620 | if (address_size < 1 || address_size > 8) | |
3621 | { | |
3622 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3623 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3624 | objfile_name (objfile), entry_addr - section->buffer, | |
3625 | address_size); | |
3626 | return; | |
3627 | } | |
3628 | ||
3629 | const uint8_t segment_selector_size = *addr++; | |
3630 | if (segment_selector_size != 0) | |
3631 | { | |
3632 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3633 | "segment_selector_size %u is not supported, " | |
3634 | "ignoring .debug_aranges."), | |
3635 | objfile_name (objfile), entry_addr - section->buffer, | |
3636 | segment_selector_size); | |
3637 | return; | |
3638 | } | |
3639 | ||
3640 | /* Must pad to an alignment boundary that is twice the address | |
3641 | size. It is undocumented by the DWARF standard but GCC does | |
3642 | use it. */ | |
3643 | for (size_t padding = ((-(addr - section->buffer)) | |
3644 | & (2 * address_size - 1)); | |
3645 | padding > 0; padding--) | |
3646 | if (*addr++ != 0) | |
3647 | { | |
3648 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3649 | "padding is not zero, ignoring .debug_aranges."), | |
3650 | objfile_name (objfile), entry_addr - section->buffer); | |
3651 | return; | |
3652 | } | |
3653 | ||
3654 | for (;;) | |
3655 | { | |
3656 | if (addr + 2 * address_size > entry_end) | |
3657 | { | |
3658 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3659 | "address list is not properly terminated, " | |
3660 | "ignoring .debug_aranges."), | |
3661 | objfile_name (objfile), entry_addr - section->buffer); | |
3662 | return; | |
3663 | } | |
3664 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3665 | dwarf5_byte_order); | |
3666 | addr += address_size; | |
3667 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3668 | dwarf5_byte_order); | |
3669 | addr += address_size; | |
3670 | if (start == 0 && length == 0) | |
3671 | break; | |
3672 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3673 | { | |
3674 | /* Symbol was eliminated due to a COMDAT group. */ | |
3675 | continue; | |
3676 | } | |
3677 | ULONGEST end = start + length; | |
3678 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr); | |
3679 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr); | |
3680 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); | |
3681 | } | |
3682 | } | |
3683 | ||
3684 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3685 | &objfile->objfile_obstack); | |
3686 | } | |
3687 | ||
59d7bcaf JK |
3688 | /* The hash function for strings in the mapped index. This is the same as |
3689 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3690 | implementation. This is necessary because the hash function is tied to the | |
3691 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3692 | SYMBOL_HASH_NEXT. |
3693 | ||
3694 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3695 | |
9291a0cd | 3696 | static hashval_t |
559a7a62 | 3697 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3698 | { |
3699 | const unsigned char *str = (const unsigned char *) p; | |
3700 | hashval_t r = 0; | |
3701 | unsigned char c; | |
3702 | ||
3703 | while ((c = *str++) != 0) | |
559a7a62 JK |
3704 | { |
3705 | if (index_version >= 5) | |
3706 | c = tolower (c); | |
3707 | r = r * 67 + c - 113; | |
3708 | } | |
9291a0cd TT |
3709 | |
3710 | return r; | |
3711 | } | |
3712 | ||
3713 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3714 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3715 | constant pool and return true. If NAME cannot be found, return |
3716 | false. */ | |
2fdf6df6 | 3717 | |
109483d9 | 3718 | static bool |
9291a0cd TT |
3719 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3720 | offset_type **vec_out) | |
3721 | { | |
0cf03b49 | 3722 | offset_type hash; |
9291a0cd | 3723 | offset_type slot, step; |
559a7a62 | 3724 | int (*cmp) (const char *, const char *); |
9291a0cd | 3725 | |
791afaa2 | 3726 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3727 | if (current_language->la_language == language_cplus |
45280282 IB |
3728 | || current_language->la_language == language_fortran |
3729 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3730 | { |
3731 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3732 | not contain any. */ | |
a8719064 | 3733 | |
72998fb3 | 3734 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3735 | { |
109483d9 | 3736 | without_params = cp_remove_params (name); |
0cf03b49 | 3737 | |
72998fb3 | 3738 | if (without_params != NULL) |
791afaa2 | 3739 | name = without_params.get (); |
0cf03b49 JK |
3740 | } |
3741 | } | |
3742 | ||
559a7a62 | 3743 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3744 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3745 | simulate our NAME being searched is also lowercased. */ |
3746 | hash = mapped_index_string_hash ((index->version == 4 | |
3747 | && case_sensitivity == case_sensitive_off | |
3748 | ? 5 : index->version), | |
3749 | name); | |
3750 | ||
f00a2de2 PA |
3751 | slot = hash & (index->symbol_table.size () - 1); |
3752 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3753 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3754 | |
3755 | for (;;) | |
3756 | { | |
9291a0cd | 3757 | const char *str; |
f00a2de2 PA |
3758 | |
3759 | const auto &bucket = index->symbol_table[slot]; | |
3760 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3761 | return false; |
9291a0cd | 3762 | |
f00a2de2 | 3763 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3764 | if (!cmp (name, str)) |
9291a0cd TT |
3765 | { |
3766 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3767 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3768 | return true; |
9291a0cd TT |
3769 | } |
3770 | ||
f00a2de2 | 3771 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3772 | } |
3773 | } | |
3774 | ||
2ec9a5e0 TT |
3775 | /* A helper function that reads the .gdb_index from SECTION and fills |
3776 | in MAP. FILENAME is the name of the file containing the section; | |
3777 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3778 | ok to use deprecated sections. | |
3779 | ||
3780 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3781 | out parameters that are filled in with information about the CU and | |
3782 | TU lists in the section. | |
3783 | ||
3784 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3785 | |
9291a0cd | 3786 | static int |
2ec9a5e0 TT |
3787 | read_index_from_section (struct objfile *objfile, |
3788 | const char *filename, | |
3789 | int deprecated_ok, | |
3790 | struct dwarf2_section_info *section, | |
3791 | struct mapped_index *map, | |
3792 | const gdb_byte **cu_list, | |
3793 | offset_type *cu_list_elements, | |
3794 | const gdb_byte **types_list, | |
3795 | offset_type *types_list_elements) | |
9291a0cd | 3796 | { |
948f8e3d | 3797 | const gdb_byte *addr; |
2ec9a5e0 | 3798 | offset_type version; |
b3b272e1 | 3799 | offset_type *metadata; |
1fd400ff | 3800 | int i; |
9291a0cd | 3801 | |
2ec9a5e0 | 3802 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3803 | return 0; |
82430852 JK |
3804 | |
3805 | /* Older elfutils strip versions could keep the section in the main | |
3806 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3807 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3808 | return 0; |
3809 | ||
2ec9a5e0 | 3810 | dwarf2_read_section (objfile, section); |
9291a0cd | 3811 | |
2ec9a5e0 | 3812 | addr = section->buffer; |
9291a0cd | 3813 | /* Version check. */ |
1fd400ff | 3814 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3815 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3816 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3817 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3818 | indices. */ |
831adc1f | 3819 | if (version < 4) |
481860b3 GB |
3820 | { |
3821 | static int warning_printed = 0; | |
3822 | if (!warning_printed) | |
3823 | { | |
3824 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3825 | filename); |
481860b3 GB |
3826 | warning_printed = 1; |
3827 | } | |
3828 | return 0; | |
3829 | } | |
3830 | /* Index version 4 uses a different hash function than index version | |
3831 | 5 and later. | |
3832 | ||
3833 | Versions earlier than 6 did not emit psymbols for inlined | |
3834 | functions. Using these files will cause GDB not to be able to | |
3835 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3836 | indices unless the user has done |
3837 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3838 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3839 | { |
3840 | static int warning_printed = 0; | |
3841 | if (!warning_printed) | |
3842 | { | |
e615022a DE |
3843 | warning (_("\ |
3844 | Skipping deprecated .gdb_index section in %s.\n\ | |
3845 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3846 | to use the section anyway."), | |
2ec9a5e0 | 3847 | filename); |
481860b3 GB |
3848 | warning_printed = 1; |
3849 | } | |
3850 | return 0; | |
3851 | } | |
796a7ff8 | 3852 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3853 | of the TU (for symbols coming from TUs), |
3854 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3855 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3856 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3857 | These are just performance bugs, and we can't distinguish gdb-generated | |
3858 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3859 | |
481860b3 | 3860 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3861 | longer backward compatible. */ |
796a7ff8 | 3862 | if (version > 8) |
594e8718 | 3863 | return 0; |
9291a0cd | 3864 | |
559a7a62 | 3865 | map->version = version; |
2ec9a5e0 | 3866 | map->total_size = section->size; |
9291a0cd TT |
3867 | |
3868 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3869 | |
3870 | i = 0; | |
2ec9a5e0 TT |
3871 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3872 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3873 | / 8); | |
1fd400ff TT |
3874 | ++i; |
3875 | ||
2ec9a5e0 TT |
3876 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3877 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3878 | - MAYBE_SWAP (metadata[i])) | |
3879 | / 8); | |
987d643c | 3880 | ++i; |
1fd400ff | 3881 | |
f00a2de2 PA |
3882 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3883 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3884 | map->address_table | |
3885 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3886 | ++i; |
3887 | ||
f00a2de2 PA |
3888 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3889 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3890 | map->symbol_table | |
3891 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3892 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3893 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3894 | |
f00a2de2 | 3895 | ++i; |
f9d83a0b | 3896 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3897 | |
2ec9a5e0 TT |
3898 | return 1; |
3899 | } | |
3900 | ||
927aa2e7 | 3901 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3902 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3903 | ||
3904 | static int | |
3905 | dwarf2_read_index (struct objfile *objfile) | |
3906 | { | |
3907 | struct mapped_index local_map, *map; | |
3908 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3909 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3910 | struct dwz_file *dwz; |
ed2dc618 SM |
3911 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3912 | = get_dwarf2_per_objfile (objfile); | |
2ec9a5e0 | 3913 | |
4262abfb | 3914 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3915 | use_deprecated_index_sections, |
3916 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3917 | &cu_list, &cu_list_elements, | |
3918 | &types_list, &types_list_elements)) | |
3919 | return 0; | |
3920 | ||
0fefef59 | 3921 | /* Don't use the index if it's empty. */ |
f00a2de2 | 3922 | if (local_map.symbol_table.empty ()) |
0fefef59 DE |
3923 | return 0; |
3924 | ||
2ec9a5e0 TT |
3925 | /* If there is a .dwz file, read it so we can get its CU list as |
3926 | well. */ | |
ed2dc618 | 3927 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3928 | if (dwz != NULL) |
2ec9a5e0 | 3929 | { |
2ec9a5e0 TT |
3930 | struct mapped_index dwz_map; |
3931 | const gdb_byte *dwz_types_ignore; | |
3932 | offset_type dwz_types_elements_ignore; | |
3933 | ||
3934 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3935 | 1, | |
3936 | &dwz->gdb_index, &dwz_map, | |
3937 | &dwz_list, &dwz_list_elements, | |
3938 | &dwz_types_ignore, | |
3939 | &dwz_types_elements_ignore)) | |
3940 | { | |
3941 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3942 | bfd_get_filename (dwz->dwz_bfd)); | |
3943 | return 0; | |
3944 | } | |
3945 | } | |
3946 | ||
74a0d9f6 JK |
3947 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3948 | dwz_list_elements); | |
1fd400ff | 3949 | |
8b70b953 TT |
3950 | if (types_list_elements) |
3951 | { | |
3952 | struct dwarf2_section_info *section; | |
3953 | ||
3954 | /* We can only handle a single .debug_types when we have an | |
3955 | index. */ | |
3956 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3957 | return 0; | |
3958 | ||
3959 | section = VEC_index (dwarf2_section_info_def, | |
3960 | dwarf2_per_objfile->types, 0); | |
3961 | ||
74a0d9f6 JK |
3962 | create_signatured_type_table_from_index (objfile, section, types_list, |
3963 | types_list_elements); | |
8b70b953 | 3964 | } |
9291a0cd | 3965 | |
ed2dc618 | 3966 | create_addrmap_from_index (dwarf2_per_objfile, &local_map); |
2ec9a5e0 | 3967 | |
8d749320 | 3968 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
3f563c84 | 3969 | map = new (map) mapped_index (); |
2ec9a5e0 | 3970 | *map = local_map; |
9291a0cd TT |
3971 | |
3972 | dwarf2_per_objfile->index_table = map; | |
3973 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3974 | dwarf2_per_objfile->quick_file_names_table = |
3975 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3976 | |
3977 | return 1; | |
3978 | } | |
3979 | ||
dee91e82 | 3980 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3981 | |
dee91e82 DE |
3982 | static void |
3983 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3984 | const gdb_byte *info_ptr, |
dee91e82 DE |
3985 | struct die_info *comp_unit_die, |
3986 | int has_children, | |
3987 | void *data) | |
9291a0cd | 3988 | { |
dee91e82 | 3989 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3990 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3991 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3992 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3993 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3994 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3995 | struct attribute *attr; |
dee91e82 | 3996 | int i; |
7b9f3c50 DE |
3997 | void **slot; |
3998 | struct quick_file_names *qfn; | |
9291a0cd | 3999 | |
0186c6a7 DE |
4000 | gdb_assert (! this_cu->is_debug_types); |
4001 | ||
07261596 TT |
4002 | /* Our callers never want to match partial units -- instead they |
4003 | will match the enclosing full CU. */ | |
4004 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
4005 | { | |
4006 | this_cu->v.quick->no_file_data = 1; | |
4007 | return; | |
4008 | } | |
4009 | ||
0186c6a7 | 4010 | lh_cu = this_cu; |
7b9f3c50 | 4011 | slot = NULL; |
dee91e82 | 4012 | |
fff8551c | 4013 | line_header_up lh; |
9c541725 | 4014 | sect_offset line_offset {}; |
fff8551c | 4015 | |
dee91e82 | 4016 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
4017 | if (attr) |
4018 | { | |
7b9f3c50 DE |
4019 | struct quick_file_names find_entry; |
4020 | ||
9c541725 | 4021 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
4022 | |
4023 | /* We may have already read in this line header (TU line header sharing). | |
4024 | If we have we're done. */ | |
094b34ac | 4025 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 4026 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
4027 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
4028 | &find_entry, INSERT); | |
4029 | if (*slot != NULL) | |
4030 | { | |
9a3c8263 | 4031 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 4032 | return; |
7b9f3c50 DE |
4033 | } |
4034 | ||
3019eac3 | 4035 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
4036 | } |
4037 | if (lh == NULL) | |
4038 | { | |
094b34ac | 4039 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 4040 | return; |
9291a0cd TT |
4041 | } |
4042 | ||
8d749320 | 4043 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 4044 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 4045 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
4046 | gdb_assert (slot != NULL); |
4047 | *slot = qfn; | |
9291a0cd | 4048 | |
d721ba37 | 4049 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 4050 | |
fff8551c | 4051 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 4052 | qfn->file_names = |
fff8551c PA |
4053 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
4054 | for (i = 0; i < lh->file_names.size (); ++i) | |
4055 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 4056 | qfn->real_names = NULL; |
9291a0cd | 4057 | |
094b34ac | 4058 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
4059 | } |
4060 | ||
4061 | /* A helper for the "quick" functions which attempts to read the line | |
4062 | table for THIS_CU. */ | |
4063 | ||
4064 | static struct quick_file_names * | |
e4a48d9d | 4065 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 4066 | { |
0186c6a7 DE |
4067 | /* This should never be called for TUs. */ |
4068 | gdb_assert (! this_cu->is_debug_types); | |
4069 | /* Nor type unit groups. */ | |
4070 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 4071 | |
dee91e82 DE |
4072 | if (this_cu->v.quick->file_names != NULL) |
4073 | return this_cu->v.quick->file_names; | |
4074 | /* If we know there is no line data, no point in looking again. */ | |
4075 | if (this_cu->v.quick->no_file_data) | |
4076 | return NULL; | |
4077 | ||
0186c6a7 | 4078 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
4079 | |
4080 | if (this_cu->v.quick->no_file_data) | |
4081 | return NULL; | |
4082 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
4083 | } |
4084 | ||
4085 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 4086 | real path for a given file name from the line table. */ |
2fdf6df6 | 4087 | |
9291a0cd | 4088 | static const char * |
7b9f3c50 DE |
4089 | dw2_get_real_path (struct objfile *objfile, |
4090 | struct quick_file_names *qfn, int index) | |
9291a0cd | 4091 | { |
7b9f3c50 DE |
4092 | if (qfn->real_names == NULL) |
4093 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 4094 | qfn->num_file_names, const char *); |
9291a0cd | 4095 | |
7b9f3c50 | 4096 | if (qfn->real_names[index] == NULL) |
14278e1f | 4097 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 4098 | |
7b9f3c50 | 4099 | return qfn->real_names[index]; |
9291a0cd TT |
4100 | } |
4101 | ||
4102 | static struct symtab * | |
4103 | dw2_find_last_source_symtab (struct objfile *objfile) | |
4104 | { | |
ed2dc618 SM |
4105 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4106 | = get_dwarf2_per_objfile (objfile); | |
4107 | int index = dwarf2_per_objfile->n_comp_units - 1; | |
4108 | dwarf2_per_cu_data *dwarf_cu = dw2_get_cutu (dwarf2_per_objfile, index); | |
4109 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu); | |
ae2de4f8 | 4110 | |
43f3e411 DE |
4111 | if (cust == NULL) |
4112 | return NULL; | |
ed2dc618 | 4113 | |
43f3e411 | 4114 | return compunit_primary_filetab (cust); |
9291a0cd TT |
4115 | } |
4116 | ||
7b9f3c50 DE |
4117 | /* Traversal function for dw2_forget_cached_source_info. */ |
4118 | ||
4119 | static int | |
4120 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 4121 | { |
7b9f3c50 | 4122 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 4123 | |
7b9f3c50 | 4124 | if (file_data->real_names) |
9291a0cd | 4125 | { |
7b9f3c50 | 4126 | int i; |
9291a0cd | 4127 | |
7b9f3c50 | 4128 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 4129 | { |
7b9f3c50 DE |
4130 | xfree ((void*) file_data->real_names[i]); |
4131 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
4132 | } |
4133 | } | |
7b9f3c50 DE |
4134 | |
4135 | return 1; | |
4136 | } | |
4137 | ||
4138 | static void | |
4139 | dw2_forget_cached_source_info (struct objfile *objfile) | |
4140 | { | |
ed2dc618 SM |
4141 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4142 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
4143 | |
4144 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
4145 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
4146 | } |
4147 | ||
f8eba3c6 TT |
4148 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
4149 | the symtabs and calls the iterator. */ | |
4150 | ||
4151 | static int | |
4152 | dw2_map_expand_apply (struct objfile *objfile, | |
4153 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 4154 | const char *name, const char *real_path, |
14bc53a8 | 4155 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 4156 | { |
43f3e411 | 4157 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
4158 | |
4159 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 4160 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
4161 | return 0; |
4162 | ||
4163 | /* This may expand more than one symtab, and we want to iterate over | |
4164 | all of them. */ | |
a0f42c21 | 4165 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 4166 | |
14bc53a8 PA |
4167 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
4168 | last_made, callback); | |
f8eba3c6 TT |
4169 | } |
4170 | ||
4171 | /* Implementation of the map_symtabs_matching_filename method. */ | |
4172 | ||
14bc53a8 PA |
4173 | static bool |
4174 | dw2_map_symtabs_matching_filename | |
4175 | (struct objfile *objfile, const char *name, const char *real_path, | |
4176 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd TT |
4177 | { |
4178 | int i; | |
c011a4f4 | 4179 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
4180 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4181 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 4182 | |
848e3e78 DE |
4183 | /* The rule is CUs specify all the files, including those used by |
4184 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 4185 | |
ed2dc618 | 4186 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4187 | { |
4188 | int j; | |
ed2dc618 | 4189 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
7b9f3c50 | 4190 | struct quick_file_names *file_data; |
9291a0cd | 4191 | |
3d7bb9d9 | 4192 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4193 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4194 | continue; |
4195 | ||
e4a48d9d | 4196 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4197 | if (file_data == NULL) |
9291a0cd TT |
4198 | continue; |
4199 | ||
7b9f3c50 | 4200 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4201 | { |
7b9f3c50 | 4202 | const char *this_name = file_data->file_names[j]; |
da235a7c | 4203 | const char *this_real_name; |
9291a0cd | 4204 | |
af529f8f | 4205 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 4206 | { |
f5b95b50 | 4207 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4208 | callback)) |
4209 | return true; | |
288e77a7 | 4210 | continue; |
4aac40c8 | 4211 | } |
9291a0cd | 4212 | |
c011a4f4 DE |
4213 | /* Before we invoke realpath, which can get expensive when many |
4214 | files are involved, do a quick comparison of the basenames. */ | |
4215 | if (! basenames_may_differ | |
4216 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
4217 | continue; | |
4218 | ||
da235a7c JK |
4219 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
4220 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 4221 | { |
da235a7c | 4222 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4223 | callback)) |
4224 | return true; | |
288e77a7 | 4225 | continue; |
da235a7c | 4226 | } |
9291a0cd | 4227 | |
da235a7c JK |
4228 | if (real_path != NULL) |
4229 | { | |
af529f8f JK |
4230 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
4231 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 4232 | if (this_real_name != NULL |
af529f8f | 4233 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 4234 | { |
f5b95b50 | 4235 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4236 | callback)) |
4237 | return true; | |
288e77a7 | 4238 | continue; |
9291a0cd TT |
4239 | } |
4240 | } | |
4241 | } | |
4242 | } | |
4243 | ||
14bc53a8 | 4244 | return false; |
9291a0cd TT |
4245 | } |
4246 | ||
da51c347 DE |
4247 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
4248 | ||
4249 | struct dw2_symtab_iterator | |
9291a0cd | 4250 | { |
ed2dc618 SM |
4251 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
4252 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
4253 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
4254 | int want_specific_block; | |
4255 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
4256 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
4257 | int block_index; | |
4258 | /* The kind of symbol we're looking for. */ | |
4259 | domain_enum domain; | |
4260 | /* The list of CUs from the index entry of the symbol, | |
4261 | or NULL if not found. */ | |
4262 | offset_type *vec; | |
4263 | /* The next element in VEC to look at. */ | |
4264 | int next; | |
4265 | /* The number of elements in VEC, or zero if there is no match. */ | |
4266 | int length; | |
8943b874 DE |
4267 | /* Have we seen a global version of the symbol? |
4268 | If so we can ignore all further global instances. | |
4269 | This is to work around gold/15646, inefficient gold-generated | |
4270 | indices. */ | |
4271 | int global_seen; | |
da51c347 | 4272 | }; |
9291a0cd | 4273 | |
da51c347 DE |
4274 | /* Initialize the index symtab iterator ITER. |
4275 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
4276 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 4277 | |
9291a0cd | 4278 | static void |
da51c347 | 4279 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 4280 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
4281 | int want_specific_block, |
4282 | int block_index, | |
4283 | domain_enum domain, | |
4284 | const char *name) | |
4285 | { | |
ed2dc618 | 4286 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
4287 | iter->want_specific_block = want_specific_block; |
4288 | iter->block_index = block_index; | |
4289 | iter->domain = domain; | |
4290 | iter->next = 0; | |
8943b874 | 4291 | iter->global_seen = 0; |
da51c347 | 4292 | |
ed2dc618 SM |
4293 | mapped_index *index = dwarf2_per_objfile->index_table; |
4294 | ||
4295 | /* index is NULL if OBJF_READNOW. */ | |
4296 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
4297 | iter->length = MAYBE_SWAP (*iter->vec); |
4298 | else | |
4299 | { | |
4300 | iter->vec = NULL; | |
4301 | iter->length = 0; | |
4302 | } | |
4303 | } | |
4304 | ||
4305 | /* Return the next matching CU or NULL if there are no more. */ | |
4306 | ||
4307 | static struct dwarf2_per_cu_data * | |
4308 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
4309 | { | |
ed2dc618 SM |
4310 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
4311 | ||
da51c347 DE |
4312 | for ( ; iter->next < iter->length; ++iter->next) |
4313 | { | |
4314 | offset_type cu_index_and_attrs = | |
4315 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
4316 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 4317 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
4318 | int want_static = iter->block_index != GLOBAL_BLOCK; |
4319 | /* This value is only valid for index versions >= 7. */ | |
4320 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4321 | gdb_index_symbol_kind symbol_kind = | |
4322 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4323 | /* Only check the symbol attributes if they're present. | |
4324 | Indices prior to version 7 don't record them, | |
4325 | and indices >= 7 may elide them for certain symbols | |
4326 | (gold does this). */ | |
4327 | int attrs_valid = | |
ed2dc618 | 4328 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
4329 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
4330 | ||
3190f0c6 DE |
4331 | /* Don't crash on bad data. */ |
4332 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4333 | + dwarf2_per_objfile->n_type_units)) | |
4334 | { | |
4335 | complaint (&symfile_complaints, | |
4336 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
4337 | " [in module %s]"), |
4338 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4339 | continue; |
4340 | } | |
4341 | ||
ed2dc618 | 4342 | per_cu = dw2_get_cutu (dwarf2_per_objfile, cu_index); |
3190f0c6 | 4343 | |
da51c347 | 4344 | /* Skip if already read in. */ |
43f3e411 | 4345 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4346 | continue; |
4347 | ||
8943b874 DE |
4348 | /* Check static vs global. */ |
4349 | if (attrs_valid) | |
4350 | { | |
4351 | if (iter->want_specific_block | |
4352 | && want_static != is_static) | |
4353 | continue; | |
4354 | /* Work around gold/15646. */ | |
4355 | if (!is_static && iter->global_seen) | |
4356 | continue; | |
4357 | if (!is_static) | |
4358 | iter->global_seen = 1; | |
4359 | } | |
da51c347 DE |
4360 | |
4361 | /* Only check the symbol's kind if it has one. */ | |
4362 | if (attrs_valid) | |
4363 | { | |
4364 | switch (iter->domain) | |
4365 | { | |
4366 | case VAR_DOMAIN: | |
4367 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4368 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4369 | /* Some types are also in VAR_DOMAIN. */ | |
4370 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4371 | continue; | |
4372 | break; | |
4373 | case STRUCT_DOMAIN: | |
4374 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4375 | continue; | |
4376 | break; | |
4377 | case LABEL_DOMAIN: | |
4378 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4379 | continue; | |
4380 | break; | |
4381 | default: | |
4382 | break; | |
4383 | } | |
4384 | } | |
4385 | ||
4386 | ++iter->next; | |
4387 | return per_cu; | |
4388 | } | |
4389 | ||
4390 | return NULL; | |
4391 | } | |
4392 | ||
43f3e411 | 4393 | static struct compunit_symtab * |
da51c347 DE |
4394 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4395 | const char *name, domain_enum domain) | |
9291a0cd | 4396 | { |
43f3e411 | 4397 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4398 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4399 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4400 | |
b5ec771e PA |
4401 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4402 | ||
ed2dc618 SM |
4403 | struct dw2_symtab_iterator iter; |
4404 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4405 | |
ed2dc618 | 4406 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4407 | |
ed2dc618 SM |
4408 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4409 | { | |
4410 | struct symbol *sym, *with_opaque = NULL; | |
4411 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
4412 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
4413 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4414 | |
ed2dc618 SM |
4415 | sym = block_find_symbol (block, name, domain, |
4416 | block_find_non_opaque_type_preferred, | |
4417 | &with_opaque); | |
b2e2f908 | 4418 | |
ed2dc618 SM |
4419 | /* Some caution must be observed with overloaded functions |
4420 | and methods, since the index will not contain any overload | |
4421 | information (but NAME might contain it). */ | |
da51c347 | 4422 | |
ed2dc618 SM |
4423 | if (sym != NULL |
4424 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4425 | return stab; | |
4426 | if (with_opaque != NULL | |
4427 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4428 | stab_best = stab; | |
da51c347 | 4429 | |
ed2dc618 | 4430 | /* Keep looking through other CUs. */ |
9291a0cd | 4431 | } |
9291a0cd | 4432 | |
da51c347 | 4433 | return stab_best; |
9291a0cd TT |
4434 | } |
4435 | ||
4436 | static void | |
4437 | dw2_print_stats (struct objfile *objfile) | |
4438 | { | |
ed2dc618 SM |
4439 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4440 | = get_dwarf2_per_objfile (objfile); | |
4441 | int total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; | |
4442 | int count = 0; | |
9291a0cd | 4443 | |
ed2dc618 | 4444 | for (int i = 0; i < total; ++i) |
9291a0cd | 4445 | { |
ed2dc618 | 4446 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
9291a0cd | 4447 | |
43f3e411 | 4448 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4449 | ++count; |
4450 | } | |
e4a48d9d | 4451 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4452 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4453 | } | |
4454 | ||
779bd270 DE |
4455 | /* This dumps minimal information about the index. |
4456 | It is called via "mt print objfiles". | |
4457 | One use is to verify .gdb_index has been loaded by the | |
4458 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4459 | ||
9291a0cd TT |
4460 | static void |
4461 | dw2_dump (struct objfile *objfile) | |
4462 | { | |
ed2dc618 SM |
4463 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4464 | = get_dwarf2_per_objfile (objfile); | |
4465 | ||
779bd270 DE |
4466 | gdb_assert (dwarf2_per_objfile->using_index); |
4467 | printf_filtered (".gdb_index:"); | |
4468 | if (dwarf2_per_objfile->index_table != NULL) | |
4469 | { | |
4470 | printf_filtered (" version %d\n", | |
4471 | dwarf2_per_objfile->index_table->version); | |
4472 | } | |
4473 | else | |
4474 | printf_filtered (" faked for \"readnow\"\n"); | |
4475 | printf_filtered ("\n"); | |
9291a0cd TT |
4476 | } |
4477 | ||
4478 | static void | |
3189cb12 DE |
4479 | dw2_relocate (struct objfile *objfile, |
4480 | const struct section_offsets *new_offsets, | |
4481 | const struct section_offsets *delta) | |
9291a0cd TT |
4482 | { |
4483 | /* There's nothing to relocate here. */ | |
4484 | } | |
4485 | ||
4486 | static void | |
4487 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4488 | const char *func_name) | |
4489 | { | |
ed2dc618 SM |
4490 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4491 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4492 | |
ed2dc618 SM |
4493 | struct dw2_symtab_iterator iter; |
4494 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4495 | |
ed2dc618 SM |
4496 | /* Note: It doesn't matter what we pass for block_index here. */ |
4497 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4498 | func_name); | |
da51c347 | 4499 | |
ed2dc618 SM |
4500 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4501 | dw2_instantiate_symtab (per_cu); | |
da51c347 | 4502 | |
9291a0cd TT |
4503 | } |
4504 | ||
4505 | static void | |
4506 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4507 | { | |
ed2dc618 SM |
4508 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4509 | = get_dwarf2_per_objfile (objfile); | |
4510 | int total_units = (dwarf2_per_objfile->n_comp_units | |
4511 | + dwarf2_per_objfile->n_type_units); | |
9291a0cd | 4512 | |
ed2dc618 | 4513 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4514 | { |
ed2dc618 SM |
4515 | struct dwarf2_per_cu_data *per_cu |
4516 | = dw2_get_cutu (dwarf2_per_objfile, i); | |
9291a0cd | 4517 | |
a0f42c21 | 4518 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4519 | } |
4520 | } | |
4521 | ||
4522 | static void | |
652a8996 JK |
4523 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4524 | const char *fullname) | |
9291a0cd | 4525 | { |
ed2dc618 SM |
4526 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4527 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4528 | |
4529 | /* We don't need to consider type units here. | |
4530 | This is only called for examining code, e.g. expand_line_sal. | |
4531 | There can be an order of magnitude (or more) more type units | |
4532 | than comp units, and we avoid them if we can. */ | |
4533 | ||
ed2dc618 | 4534 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4535 | { |
4536 | int j; | |
ed2dc618 | 4537 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
7b9f3c50 | 4538 | struct quick_file_names *file_data; |
9291a0cd | 4539 | |
3d7bb9d9 | 4540 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4541 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4542 | continue; |
4543 | ||
e4a48d9d | 4544 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4545 | if (file_data == NULL) |
9291a0cd TT |
4546 | continue; |
4547 | ||
7b9f3c50 | 4548 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4549 | { |
652a8996 JK |
4550 | const char *this_fullname = file_data->file_names[j]; |
4551 | ||
4552 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4553 | { |
a0f42c21 | 4554 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4555 | break; |
4556 | } | |
4557 | } | |
4558 | } | |
4559 | } | |
4560 | ||
9291a0cd | 4561 | static void |
ade7ed9e | 4562 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4563 | const char * name, domain_enum domain, |
ade7ed9e | 4564 | int global, |
40658b94 PH |
4565 | int (*callback) (struct block *, |
4566 | struct symbol *, void *), | |
b5ec771e | 4567 | void *data, symbol_name_match_type match, |
2edb89d3 | 4568 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4569 | { |
40658b94 | 4570 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4571 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4572 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4573 | } |
4574 | ||
b5ec771e PA |
4575 | /* Symbol name matcher for .gdb_index names. |
4576 | ||
4577 | Symbol names in .gdb_index have a few particularities: | |
4578 | ||
4579 | - There's no indication of which is the language of each symbol. | |
4580 | ||
4581 | Since each language has its own symbol name matching algorithm, | |
4582 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4583 | each symbol against all languages. This would be a potential |
4584 | performance problem if it were not mitigated by the | |
4585 | mapped_index::name_components lookup table, which significantly | |
4586 | reduces the number of times we need to call into this matcher, | |
4587 | making it a non-issue. | |
b5ec771e PA |
4588 | |
4589 | - Symbol names in the index have no overload (parameter) | |
4590 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4591 | appear as "foo" in the index, for example. | |
4592 | ||
4593 | This means that the lookup names passed to the symbol name | |
4594 | matcher functions must have no parameter information either | |
4595 | because (e.g.) symbol search name "foo" does not match | |
4596 | lookup-name "foo(int)" [while swapping search name for lookup | |
4597 | name would match]. | |
4598 | */ | |
4599 | class gdb_index_symbol_name_matcher | |
4600 | { | |
4601 | public: | |
4602 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4603 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4604 | ||
4605 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4606 | Returns true if any matcher matches. */ | |
4607 | bool matches (const char *symbol_name); | |
4608 | ||
4609 | private: | |
4610 | /* A reference to the lookup name we're matching against. */ | |
4611 | const lookup_name_info &m_lookup_name; | |
4612 | ||
4613 | /* A vector holding all the different symbol name matchers, for all | |
4614 | languages. */ | |
4615 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4616 | }; | |
4617 | ||
4618 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4619 | (const lookup_name_info &lookup_name) | |
4620 | : m_lookup_name (lookup_name) | |
4621 | { | |
4622 | /* Prepare the vector of comparison functions upfront, to avoid | |
4623 | doing the same work for each symbol. Care is taken to avoid | |
4624 | matching with the same matcher more than once if/when multiple | |
4625 | languages use the same matcher function. */ | |
4626 | auto &matchers = m_symbol_name_matcher_funcs; | |
4627 | matchers.reserve (nr_languages); | |
4628 | ||
4629 | matchers.push_back (default_symbol_name_matcher); | |
4630 | ||
4631 | for (int i = 0; i < nr_languages; i++) | |
4632 | { | |
4633 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4634 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4635 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4636 | |
4637 | /* Don't insert the same comparison routine more than once. | |
4638 | Note that we do this linear walk instead of a seemingly | |
4639 | cheaper sorted insert, or use a std::set or something like | |
4640 | that, because relative order of function addresses is not | |
4641 | stable. This is not a problem in practice because the number | |
4642 | of supported languages is low, and the cost here is tiny | |
4643 | compared to the number of searches we'll do afterwards using | |
4644 | this object. */ | |
4645 | if (name_matcher != default_symbol_name_matcher | |
4646 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4647 | == matchers.end ())) | |
4648 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4649 | } |
4650 | } | |
4651 | ||
4652 | bool | |
4653 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4654 | { | |
4655 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4656 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4657 | return true; | |
4658 | ||
4659 | return false; | |
4660 | } | |
4661 | ||
e1ef7d7a PA |
4662 | /* Starting from a search name, return the string that finds the upper |
4663 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4664 | list. Returns the empty string to indicate that the upper bound is | |
4665 | the end of the list. */ | |
4666 | ||
4667 | static std::string | |
4668 | make_sort_after_prefix_name (const char *search_name) | |
4669 | { | |
4670 | /* When looking to complete "func", we find the upper bound of all | |
4671 | symbols that start with "func" by looking for where we'd insert | |
4672 | the closest string that would follow "func" in lexicographical | |
4673 | order. Usually, that's "func"-with-last-character-incremented, | |
4674 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4675 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4676 | Especially mind the 0xff character, which is a valid character in | |
4677 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4678 | rule out compilers allowing it in identifiers. Note that | |
4679 | conveniently, strcmp/strcasecmp are specified to compare | |
4680 | characters interpreted as unsigned char. So what we do is treat | |
4681 | the whole string as a base 256 number composed of a sequence of | |
4682 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4683 | to 0, and carries 1 to the following more-significant position. | |
4684 | If the very first character in SEARCH_NAME ends up incremented | |
4685 | and carries/overflows, then the upper bound is the end of the | |
4686 | list. The string after the empty string is also the empty | |
4687 | string. | |
4688 | ||
4689 | Some examples of this operation: | |
4690 | ||
4691 | SEARCH_NAME => "+1" RESULT | |
4692 | ||
4693 | "abc" => "abd" | |
4694 | "ab\xff" => "ac" | |
4695 | "\xff" "a" "\xff" => "\xff" "b" | |
4696 | "\xff" => "" | |
4697 | "\xff\xff" => "" | |
4698 | "" => "" | |
4699 | ||
4700 | Then, with these symbols for example: | |
4701 | ||
4702 | func | |
4703 | func1 | |
4704 | fund | |
4705 | ||
4706 | completing "func" looks for symbols between "func" and | |
4707 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4708 | which finds "func" and "func1", but not "fund". | |
4709 | ||
4710 | And with: | |
4711 | ||
4712 | funcÿ (Latin1 'ÿ' [0xff]) | |
4713 | funcÿ1 | |
4714 | fund | |
4715 | ||
4716 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4717 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4718 | ||
4719 | And with: | |
4720 | ||
4721 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4722 | ÿÿ1 | |
4723 | ||
4724 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4725 | the end of the list. | |
4726 | */ | |
4727 | std::string after = search_name; | |
4728 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4729 | after.pop_back (); | |
4730 | if (!after.empty ()) | |
4731 | after.back () = (unsigned char) after.back () + 1; | |
4732 | return after; | |
4733 | } | |
4734 | ||
5c58de74 | 4735 | /* See declaration. */ |
61d96d7e | 4736 | |
5c58de74 PA |
4737 | std::pair<std::vector<name_component>::const_iterator, |
4738 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4739 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4740 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4741 | { |
5c58de74 PA |
4742 | auto *name_cmp |
4743 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4744 | |
4745 | const char *cplus | |
c62446b1 | 4746 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4747 | |
3f563c84 PA |
4748 | /* Comparison function object for lower_bound that matches against a |
4749 | given symbol name. */ | |
4750 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4751 | const char *name) | |
4752 | { | |
5c58de74 | 4753 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4754 | const char *elem_name = elem_qualified + elem.name_offset; |
4755 | return name_cmp (elem_name, name) < 0; | |
4756 | }; | |
4757 | ||
4758 | /* Comparison function object for upper_bound that matches against a | |
4759 | given symbol name. */ | |
4760 | auto lookup_compare_upper = [&] (const char *name, | |
4761 | const name_component &elem) | |
4762 | { | |
5c58de74 | 4763 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4764 | const char *elem_name = elem_qualified + elem.name_offset; |
4765 | return name_cmp (name, elem_name) < 0; | |
4766 | }; | |
4767 | ||
5c58de74 PA |
4768 | auto begin = this->name_components.begin (); |
4769 | auto end = this->name_components.end (); | |
3f563c84 PA |
4770 | |
4771 | /* Find the lower bound. */ | |
4772 | auto lower = [&] () | |
4773 | { | |
5c58de74 | 4774 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4775 | return begin; |
4776 | else | |
4777 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4778 | } (); | |
4779 | ||
4780 | /* Find the upper bound. */ | |
4781 | auto upper = [&] () | |
4782 | { | |
5c58de74 | 4783 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4784 | { |
e1ef7d7a PA |
4785 | /* In completion mode, we want UPPER to point past all |
4786 | symbols names that have the same prefix. I.e., with | |
4787 | these symbols, and completing "func": | |
4788 | ||
4789 | function << lower bound | |
4790 | function1 | |
4791 | other_function << upper bound | |
4792 | ||
4793 | We find the upper bound by looking for the insertion | |
4794 | point of "func"-with-last-character-incremented, | |
4795 | i.e. "fund". */ | |
4796 | std::string after = make_sort_after_prefix_name (cplus); | |
4797 | if (after.empty ()) | |
3f563c84 | 4798 | return end; |
e6b2f5ef PA |
4799 | return std::lower_bound (lower, end, after.c_str (), |
4800 | lookup_compare_lower); | |
3f563c84 PA |
4801 | } |
4802 | else | |
4803 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4804 | } (); | |
4805 | ||
5c58de74 PA |
4806 | return {lower, upper}; |
4807 | } | |
4808 | ||
4809 | /* See declaration. */ | |
4810 | ||
4811 | void | |
44ed8f3e | 4812 | mapped_index_base::build_name_components () |
5c58de74 PA |
4813 | { |
4814 | if (!this->name_components.empty ()) | |
4815 | return; | |
4816 | ||
4817 | this->name_components_casing = case_sensitivity; | |
4818 | auto *name_cmp | |
4819 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4820 | ||
4821 | /* The code below only knows how to break apart components of C++ | |
4822 | symbol names (and other languages that use '::' as | |
4823 | namespace/module separator). If we add support for wild matching | |
4824 | to some language that uses some other operator (E.g., Ada, Go and | |
4825 | D use '.'), then we'll need to try splitting the symbol name | |
4826 | according to that language too. Note that Ada does support wild | |
4827 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4828 | auto count = this->symbol_name_count (); |
4829 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4830 | { |
44ed8f3e | 4831 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4832 | continue; |
4833 | ||
4834 | const char *name = this->symbol_name_at (idx); | |
4835 | ||
4836 | /* Add each name component to the name component table. */ | |
4837 | unsigned int previous_len = 0; | |
4838 | for (unsigned int current_len = cp_find_first_component (name); | |
4839 | name[current_len] != '\0'; | |
4840 | current_len += cp_find_first_component (name + current_len)) | |
4841 | { | |
4842 | gdb_assert (name[current_len] == ':'); | |
4843 | this->name_components.push_back ({previous_len, idx}); | |
4844 | /* Skip the '::'. */ | |
4845 | current_len += 2; | |
4846 | previous_len = current_len; | |
4847 | } | |
4848 | this->name_components.push_back ({previous_len, idx}); | |
4849 | } | |
4850 | ||
4851 | /* Sort name_components elements by name. */ | |
4852 | auto name_comp_compare = [&] (const name_component &left, | |
4853 | const name_component &right) | |
4854 | { | |
4855 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4856 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4857 | ||
4858 | const char *left_name = left_qualified + left.name_offset; | |
4859 | const char *right_name = right_qualified + right.name_offset; | |
4860 | ||
4861 | return name_cmp (left_name, right_name) < 0; | |
4862 | }; | |
4863 | ||
4864 | std::sort (this->name_components.begin (), | |
4865 | this->name_components.end (), | |
4866 | name_comp_compare); | |
4867 | } | |
4868 | ||
4869 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4870 | mapped_index_base instead of the containing objfile. This is split |
4871 | to a separate function in order to be able to unit test the | |
4872 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4873 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4874 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4875 | |
4876 | static void | |
4877 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4878 | (mapped_index_base &index, |
5c58de74 PA |
4879 | const lookup_name_info &lookup_name_in, |
4880 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4881 | enum search_domain kind, | |
4882 | gdb::function_view<void (offset_type)> match_callback) | |
4883 | { | |
4884 | lookup_name_info lookup_name_without_params | |
4885 | = lookup_name_in.make_ignore_params (); | |
4886 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4887 | (lookup_name_without_params); | |
4888 | ||
4889 | /* Build the symbol name component sorted vector, if we haven't | |
4890 | yet. */ | |
4891 | index.build_name_components (); | |
4892 | ||
4893 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4894 | ||
3f563c84 PA |
4895 | /* Now for each symbol name in range, check to see if we have a name |
4896 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4897 | ||
4898 | /* The same symbol may appear more than once in the range though. | |
4899 | E.g., if we're looking for symbols that complete "w", and we have | |
4900 | a symbol named "w1::w2", we'll find the two name components for | |
4901 | that same symbol in the range. To be sure we only call the | |
4902 | callback once per symbol, we first collect the symbol name | |
4903 | indexes that matched in a temporary vector and ignore | |
4904 | duplicates. */ | |
4905 | std::vector<offset_type> matches; | |
5c58de74 | 4906 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4907 | |
5c58de74 | 4908 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4909 | { |
5c58de74 | 4910 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4911 | |
4912 | if (!lookup_name_matcher.matches (qualified) | |
4913 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4914 | continue; |
4915 | ||
5c58de74 | 4916 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4917 | } |
4918 | ||
4919 | std::sort (matches.begin (), matches.end ()); | |
4920 | ||
4921 | /* Finally call the callback, once per match. */ | |
4922 | ULONGEST prev = -1; | |
4923 | for (offset_type idx : matches) | |
4924 | { | |
4925 | if (prev != idx) | |
4926 | { | |
4927 | match_callback (idx); | |
4928 | prev = idx; | |
4929 | } | |
4930 | } | |
4931 | ||
4932 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4933 | (offset_type)-1 are both possible values. */ | |
4934 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4935 | } | |
4936 | ||
c62446b1 PA |
4937 | #if GDB_SELF_TEST |
4938 | ||
4939 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4940 | ||
a3c5fafd PA |
4941 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4942 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4943 | mapped_index_base interface. Builds an index from the symbol list | |
4944 | passed as parameter to the constructor. */ | |
4945 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4946 | { |
4947 | public: | |
a3c5fafd PA |
4948 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4949 | : m_symbol_table (symbols) | |
c62446b1 PA |
4950 | {} |
4951 | ||
a3c5fafd | 4952 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4953 | |
a3c5fafd PA |
4954 | /* Return the number of names in the symbol table. */ |
4955 | virtual size_t symbol_name_count () const | |
c62446b1 | 4956 | { |
a3c5fafd | 4957 | return m_symbol_table.size (); |
c62446b1 PA |
4958 | } |
4959 | ||
a3c5fafd PA |
4960 | /* Get the name of the symbol at IDX in the symbol table. */ |
4961 | virtual const char *symbol_name_at (offset_type idx) const | |
4962 | { | |
4963 | return m_symbol_table[idx]; | |
4964 | } | |
c62446b1 | 4965 | |
a3c5fafd PA |
4966 | private: |
4967 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4968 | }; |
4969 | ||
4970 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4971 | string, to pass to print routines. */ | |
4972 | ||
4973 | static const char * | |
4974 | string_or_null (const char *str) | |
4975 | { | |
4976 | return str != NULL ? str : "<null>"; | |
4977 | } | |
4978 | ||
4979 | /* Check if a lookup_name_info built from | |
4980 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4981 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4982 | matching order. If no match expected, then an empty list is | |
4983 | specified. Returns true on success. On failure prints a warning | |
4984 | indicating the file:line that failed, and returns false. */ | |
4985 | ||
4986 | static bool | |
4987 | check_match (const char *file, int line, | |
4988 | mock_mapped_index &mock_index, | |
4989 | const char *name, symbol_name_match_type match_type, | |
4990 | bool completion_mode, | |
4991 | std::initializer_list<const char *> expected_list) | |
4992 | { | |
4993 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4994 | ||
4995 | bool matched = true; | |
4996 | ||
4997 | auto mismatch = [&] (const char *expected_str, | |
4998 | const char *got) | |
4999 | { | |
5000 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
5001 | "expected=\"%s\", got=\"%s\"\n"), | |
5002 | file, line, | |
5003 | (match_type == symbol_name_match_type::FULL | |
5004 | ? "FULL" : "WILD"), | |
5005 | name, string_or_null (expected_str), string_or_null (got)); | |
5006 | matched = false; | |
5007 | }; | |
5008 | ||
5009 | auto expected_it = expected_list.begin (); | |
5010 | auto expected_end = expected_list.end (); | |
5011 | ||
a3c5fafd | 5012 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
5013 | NULL, ALL_DOMAIN, |
5014 | [&] (offset_type idx) | |
5015 | { | |
a3c5fafd | 5016 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
5017 | const char *expected_str |
5018 | = expected_it == expected_end ? NULL : *expected_it++; | |
5019 | ||
5020 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
5021 | mismatch (expected_str, matched_name); | |
5022 | }); | |
5023 | ||
5024 | const char *expected_str | |
5025 | = expected_it == expected_end ? NULL : *expected_it++; | |
5026 | if (expected_str != NULL) | |
5027 | mismatch (expected_str, NULL); | |
5028 | ||
5029 | return matched; | |
5030 | } | |
5031 | ||
5032 | /* The symbols added to the mock mapped_index for testing (in | |
5033 | canonical form). */ | |
5034 | static const char *test_symbols[] = { | |
5035 | "function", | |
5036 | "std::bar", | |
5037 | "std::zfunction", | |
5038 | "std::zfunction2", | |
5039 | "w1::w2", | |
5040 | "ns::foo<char*>", | |
5041 | "ns::foo<int>", | |
5042 | "ns::foo<long>", | |
a20714ff PA |
5043 | "ns2::tmpl<int>::foo2", |
5044 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 5045 | |
e1ef7d7a PA |
5046 | /* These are used to check that the increment-last-char in the |
5047 | matching algorithm for completion doesn't match "t1_fund" when | |
5048 | completing "t1_func". */ | |
5049 | "t1_func", | |
5050 | "t1_func1", | |
5051 | "t1_fund", | |
5052 | "t1_fund1", | |
5053 | ||
5054 | /* A UTF-8 name with multi-byte sequences to make sure that | |
5055 | cp-name-parser understands this as a single identifier ("função" | |
5056 | is "function" in PT). */ | |
5057 | u8"u8função", | |
5058 | ||
5059 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
5060 | "yfunc\377", | |
5061 | ||
5062 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
5063 | "\377", | |
5064 | "\377\377123", | |
5065 | ||
c62446b1 PA |
5066 | /* A name with all sorts of complications. Starts with "z" to make |
5067 | it easier for the completion tests below. */ | |
5068 | #define Z_SYM_NAME \ | |
5069 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
5070 | "::tuple<(anonymous namespace)::ui*, " \ | |
5071 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
5072 | ||
5073 | Z_SYM_NAME | |
5074 | }; | |
5075 | ||
a3c5fafd PA |
5076 | /* Returns true if the mapped_index_base::find_name_component_bounds |
5077 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
5078 | in completion mode. */ | |
5c58de74 PA |
5079 | |
5080 | static bool | |
a3c5fafd | 5081 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
5082 | const char *search_name, |
5083 | gdb::array_view<const char *> expected_syms) | |
5084 | { | |
5085 | lookup_name_info lookup_name (search_name, | |
5086 | symbol_name_match_type::FULL, true); | |
5087 | ||
5088 | auto bounds = index.find_name_components_bounds (lookup_name); | |
5089 | ||
5090 | size_t distance = std::distance (bounds.first, bounds.second); | |
5091 | if (distance != expected_syms.size ()) | |
5092 | return false; | |
5093 | ||
5094 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
5095 | { | |
5096 | auto nc_elem = bounds.first + exp_elem; | |
5097 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
5098 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
5099 | return false; | |
5100 | } | |
5101 | ||
5102 | return true; | |
5103 | } | |
5104 | ||
5105 | /* Test the lower-level mapped_index::find_name_component_bounds | |
5106 | method. */ | |
5107 | ||
c62446b1 | 5108 | static void |
5c58de74 PA |
5109 | test_mapped_index_find_name_component_bounds () |
5110 | { | |
5111 | mock_mapped_index mock_index (test_symbols); | |
5112 | ||
a3c5fafd | 5113 | mock_index.build_name_components (); |
5c58de74 PA |
5114 | |
5115 | /* Test the lower-level mapped_index::find_name_component_bounds | |
5116 | method in completion mode. */ | |
5117 | { | |
5118 | static const char *expected_syms[] = { | |
5119 | "t1_func", | |
5120 | "t1_func1", | |
5c58de74 PA |
5121 | }; |
5122 | ||
a3c5fafd | 5123 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5124 | "t1_func", expected_syms)); |
5125 | } | |
5126 | ||
5127 | /* Check that the increment-last-char in the name matching algorithm | |
5128 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
5129 | { | |
5130 | static const char *expected_syms1[] = { | |
5131 | "\377", | |
5132 | "\377\377123", | |
5133 | }; | |
a3c5fafd | 5134 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5135 | "\377", expected_syms1)); |
5136 | ||
5137 | static const char *expected_syms2[] = { | |
5138 | "\377\377123", | |
5139 | }; | |
a3c5fafd | 5140 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5141 | "\377\377", expected_syms2)); |
5142 | } | |
5143 | } | |
5144 | ||
5145 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
5146 | ||
5147 | static void | |
5148 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
5149 | { |
5150 | mock_mapped_index mock_index (test_symbols); | |
5151 | ||
5152 | /* We let all tests run until the end even if some fails, for debug | |
5153 | convenience. */ | |
5154 | bool any_mismatch = false; | |
5155 | ||
5156 | /* Create the expected symbols list (an initializer_list). Needed | |
5157 | because lists have commas, and we need to pass them to CHECK, | |
5158 | which is a macro. */ | |
5159 | #define EXPECT(...) { __VA_ARGS__ } | |
5160 | ||
5161 | /* Wrapper for check_match that passes down the current | |
5162 | __FILE__/__LINE__. */ | |
5163 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
5164 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
5165 | mock_index, \ | |
5166 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
5167 | EXPECTED_LIST) | |
5168 | ||
5169 | /* Identity checks. */ | |
5170 | for (const char *sym : test_symbols) | |
5171 | { | |
5172 | /* Should be able to match all existing symbols. */ | |
5173 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
5174 | EXPECT (sym)); | |
5175 | ||
5176 | /* Should be able to match all existing symbols with | |
5177 | parameters. */ | |
5178 | std::string with_params = std::string (sym) + "(int)"; | |
5179 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5180 | EXPECT (sym)); | |
5181 | ||
5182 | /* Should be able to match all existing symbols with | |
5183 | parameters and qualifiers. */ | |
5184 | with_params = std::string (sym) + " ( int ) const"; | |
5185 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5186 | EXPECT (sym)); | |
5187 | ||
5188 | /* This should really find sym, but cp-name-parser.y doesn't | |
5189 | know about lvalue/rvalue qualifiers yet. */ | |
5190 | with_params = std::string (sym) + " ( int ) &&"; | |
5191 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5192 | {}); | |
5193 | } | |
5194 | ||
e1ef7d7a PA |
5195 | /* Check that the name matching algorithm for completion doesn't get |
5196 | confused with Latin1 'ÿ' / 0xff. */ | |
5197 | { | |
5198 | static const char str[] = "\377"; | |
5199 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5200 | EXPECT ("\377", "\377\377123")); | |
5201 | } | |
5202 | ||
5203 | /* Check that the increment-last-char in the matching algorithm for | |
5204 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
5205 | { | |
5206 | static const char str[] = "t1_func"; | |
5207 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5208 | EXPECT ("t1_func", "t1_func1")); | |
5209 | } | |
5210 | ||
c62446b1 PA |
5211 | /* Check that completion mode works at each prefix of the expected |
5212 | symbol name. */ | |
5213 | { | |
5214 | static const char str[] = "function(int)"; | |
5215 | size_t len = strlen (str); | |
5216 | std::string lookup; | |
5217 | ||
5218 | for (size_t i = 1; i < len; i++) | |
5219 | { | |
5220 | lookup.assign (str, i); | |
5221 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5222 | EXPECT ("function")); | |
5223 | } | |
5224 | } | |
5225 | ||
5226 | /* While "w" is a prefix of both components, the match function | |
5227 | should still only be called once. */ | |
5228 | { | |
5229 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
5230 | EXPECT ("w1::w2")); | |
a20714ff PA |
5231 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
5232 | EXPECT ("w1::w2")); | |
c62446b1 PA |
5233 | } |
5234 | ||
5235 | /* Same, with a "complicated" symbol. */ | |
5236 | { | |
5237 | static const char str[] = Z_SYM_NAME; | |
5238 | size_t len = strlen (str); | |
5239 | std::string lookup; | |
5240 | ||
5241 | for (size_t i = 1; i < len; i++) | |
5242 | { | |
5243 | lookup.assign (str, i); | |
5244 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5245 | EXPECT (Z_SYM_NAME)); | |
5246 | } | |
5247 | } | |
5248 | ||
5249 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
5250 | { | |
5251 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
5252 | {}); | |
5253 | } | |
5254 | ||
5255 | /* A complete symbol with parameters matches any overload, since the | |
5256 | index has no overload info. */ | |
5257 | { | |
5258 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
5259 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
5260 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
5261 | EXPECT ("std::zfunction", "std::zfunction2")); | |
5262 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
5263 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
5264 | } |
5265 | ||
5266 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5267 | template argument list. */ | |
5268 | { | |
5269 | static const char expected[] = "ns::foo<int>"; | |
5270 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
5271 | EXPECT (expected)); | |
a20714ff PA |
5272 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
5273 | EXPECT (expected)); | |
c62446b1 PA |
5274 | } |
5275 | ||
5276 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5277 | template argument list that includes a pointer. */ | |
5278 | { | |
5279 | static const char expected[] = "ns::foo<char*>"; | |
5280 | /* Try both completion and non-completion modes. */ | |
5281 | static const bool completion_mode[2] = {false, true}; | |
5282 | for (size_t i = 0; i < 2; i++) | |
5283 | { | |
5284 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
5285 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5286 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
5287 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5288 | |
5289 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
5290 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5291 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
5292 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5293 | } |
5294 | } | |
5295 | ||
5296 | { | |
5297 | /* Check method qualifiers are ignored. */ | |
5298 | static const char expected[] = "ns::foo<char*>"; | |
5299 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
5300 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
5301 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
5302 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
5303 | CHECK_MATCH ("foo < char * > ( int ) const", |
5304 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
5305 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
5306 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
5307 | } |
5308 | ||
5309 | /* Test lookup names that don't match anything. */ | |
5310 | { | |
a20714ff PA |
5311 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
5312 | {}); | |
5313 | ||
c62446b1 PA |
5314 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
5315 | {}); | |
5316 | } | |
5317 | ||
a20714ff PA |
5318 | /* Some wild matching tests, exercising "(anonymous namespace)", |
5319 | which should not be confused with a parameter list. */ | |
5320 | { | |
5321 | static const char *syms[] = { | |
5322 | "A::B::C", | |
5323 | "B::C", | |
5324 | "C", | |
5325 | "A :: B :: C ( int )", | |
5326 | "B :: C ( int )", | |
5327 | "C ( int )", | |
5328 | }; | |
5329 | ||
5330 | for (const char *s : syms) | |
5331 | { | |
5332 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
5333 | EXPECT ("(anonymous namespace)::A::B::C")); | |
5334 | } | |
5335 | } | |
5336 | ||
5337 | { | |
5338 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
5339 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
5340 | EXPECT (expected)); | |
5341 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
5342 | EXPECT (expected)); | |
5343 | } | |
5344 | ||
c62446b1 PA |
5345 | SELF_CHECK (!any_mismatch); |
5346 | ||
5347 | #undef EXPECT | |
5348 | #undef CHECK_MATCH | |
5349 | } | |
5350 | ||
5c58de74 PA |
5351 | static void |
5352 | run_test () | |
5353 | { | |
5354 | test_mapped_index_find_name_component_bounds (); | |
5355 | test_dw2_expand_symtabs_matching_symbol (); | |
5356 | } | |
5357 | ||
c62446b1 PA |
5358 | }} // namespace selftests::dw2_expand_symtabs_matching |
5359 | ||
5360 | #endif /* GDB_SELF_TEST */ | |
5361 | ||
4b514bc8 JK |
5362 | /* If FILE_MATCHER is NULL or if PER_CU has |
5363 | dwarf2_per_cu_quick_data::MARK set (see | |
5364 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5365 | EXPANSION_NOTIFY on it. */ | |
5366 | ||
5367 | static void | |
5368 | dw2_expand_symtabs_matching_one | |
5369 | (struct dwarf2_per_cu_data *per_cu, | |
5370 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5371 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5372 | { | |
5373 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5374 | { | |
5375 | bool symtab_was_null | |
5376 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5377 | ||
5378 | dw2_instantiate_symtab (per_cu); | |
5379 | ||
5380 | if (expansion_notify != NULL | |
5381 | && symtab_was_null | |
5382 | && per_cu->v.quick->compunit_symtab != NULL) | |
5383 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5384 | } | |
5385 | } | |
5386 | ||
3f563c84 PA |
5387 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5388 | matched, to expand corresponding CUs that were marked. IDX is the | |
5389 | index of the symbol name that matched. */ | |
5390 | ||
5391 | static void | |
5392 | dw2_expand_marked_cus | |
ed2dc618 | 5393 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5394 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5395 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5396 | search_domain kind) | |
5397 | { | |
3f563c84 PA |
5398 | offset_type *vec, vec_len, vec_idx; |
5399 | bool global_seen = false; | |
ed2dc618 | 5400 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5401 | |
61920122 | 5402 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5403 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5404 | vec_len = MAYBE_SWAP (vec[0]); |
5405 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5406 | { | |
5407 | struct dwarf2_per_cu_data *per_cu; | |
5408 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); | |
5409 | /* This value is only valid for index versions >= 7. */ | |
5410 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5411 | gdb_index_symbol_kind symbol_kind = | |
5412 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5413 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5414 | /* Only check the symbol attributes if they're present. | |
5415 | Indices prior to version 7 don't record them, | |
5416 | and indices >= 7 may elide them for certain symbols | |
5417 | (gold does this). */ | |
5418 | int attrs_valid = | |
5419 | (index.version >= 7 | |
5420 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5421 | ||
5422 | /* Work around gold/15646. */ | |
5423 | if (attrs_valid) | |
9291a0cd | 5424 | { |
61920122 PA |
5425 | if (!is_static && global_seen) |
5426 | continue; | |
5427 | if (!is_static) | |
5428 | global_seen = true; | |
5429 | } | |
3190f0c6 | 5430 | |
61920122 PA |
5431 | /* Only check the symbol's kind if it has one. */ |
5432 | if (attrs_valid) | |
5433 | { | |
5434 | switch (kind) | |
8943b874 | 5435 | { |
61920122 PA |
5436 | case VARIABLES_DOMAIN: |
5437 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5438 | continue; | |
5439 | break; | |
5440 | case FUNCTIONS_DOMAIN: | |
5441 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5442 | continue; |
61920122 PA |
5443 | break; |
5444 | case TYPES_DOMAIN: | |
5445 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5446 | continue; | |
5447 | break; | |
5448 | default: | |
5449 | break; | |
8943b874 | 5450 | } |
61920122 | 5451 | } |
8943b874 | 5452 | |
61920122 PA |
5453 | /* Don't crash on bad data. */ |
5454 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
5455 | + dwarf2_per_objfile->n_type_units)) | |
5456 | { | |
5457 | complaint (&symfile_complaints, | |
5458 | _(".gdb_index entry has bad CU index" | |
ed2dc618 SM |
5459 | " [in module %s]"), |
5460 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5461 | continue; |
5462 | } | |
5463 | ||
ed2dc618 | 5464 | per_cu = dw2_get_cutu (dwarf2_per_objfile, cu_index); |
4b514bc8 JK |
5465 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5466 | expansion_notify); | |
61920122 PA |
5467 | } |
5468 | } | |
5469 | ||
4b514bc8 JK |
5470 | /* If FILE_MATCHER is non-NULL, set all the |
5471 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5472 | that match FILE_MATCHER. */ | |
5473 | ||
61920122 | 5474 | static void |
4b514bc8 | 5475 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5476 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5477 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5478 | { |
4b514bc8 | 5479 | if (file_matcher == NULL) |
61920122 PA |
5480 | return; |
5481 | ||
4b514bc8 JK |
5482 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5483 | ||
5484 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5485 | htab_eq_pointer, | |
5486 | NULL, xcalloc, xfree)); | |
5487 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5488 | htab_eq_pointer, |
5489 | NULL, xcalloc, xfree)); | |
61920122 | 5490 | |
4b514bc8 JK |
5491 | /* The rule is CUs specify all the files, including those used by |
5492 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5493 | |
927aa2e7 JK |
5494 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
5495 | { | |
5496 | int j; | |
ed2dc618 | 5497 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5498 | struct quick_file_names *file_data; |
5499 | void **slot; | |
5500 | ||
5501 | QUIT; | |
5502 | ||
5503 | per_cu->v.quick->mark = 0; | |
5504 | ||
5505 | /* We only need to look at symtabs not already expanded. */ | |
5506 | if (per_cu->v.quick->compunit_symtab) | |
5507 | continue; | |
5508 | ||
5509 | file_data = dw2_get_file_names (per_cu); | |
5510 | if (file_data == NULL) | |
5511 | continue; | |
5512 | ||
5513 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5514 | continue; | |
5515 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5516 | { | |
5517 | per_cu->v.quick->mark = 1; | |
5518 | continue; | |
5519 | } | |
5520 | ||
5521 | for (j = 0; j < file_data->num_file_names; ++j) | |
5522 | { | |
5523 | const char *this_real_name; | |
5524 | ||
5525 | if (file_matcher (file_data->file_names[j], false)) | |
5526 | { | |
5527 | per_cu->v.quick->mark = 1; | |
5528 | break; | |
5529 | } | |
5530 | ||
5531 | /* Before we invoke realpath, which can get expensive when many | |
5532 | files are involved, do a quick comparison of the basenames. */ | |
5533 | if (!basenames_may_differ | |
5534 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5535 | true)) | |
5536 | continue; | |
5537 | ||
5538 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5539 | if (file_matcher (this_real_name, false)) | |
5540 | { | |
5541 | per_cu->v.quick->mark = 1; | |
5542 | break; | |
5543 | } | |
5544 | } | |
5545 | ||
5546 | slot = htab_find_slot (per_cu->v.quick->mark | |
5547 | ? visited_found.get () | |
5548 | : visited_not_found.get (), | |
5549 | file_data, INSERT); | |
5550 | *slot = file_data; | |
5551 | } | |
5552 | } | |
5553 | ||
5554 | static void | |
5555 | dw2_expand_symtabs_matching | |
5556 | (struct objfile *objfile, | |
5557 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5558 | const lookup_name_info &lookup_name, | |
5559 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5560 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5561 | enum search_domain kind) | |
5562 | { | |
ed2dc618 SM |
5563 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5564 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5565 | |
5566 | /* index_table is NULL if OBJF_READNOW. */ | |
5567 | if (!dwarf2_per_objfile->index_table) | |
5568 | return; | |
5569 | ||
ed2dc618 | 5570 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5571 | |
5572 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5573 | ||
5574 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5575 | symbol_matcher, | |
5576 | kind, [&] (offset_type idx) | |
5577 | { | |
ed2dc618 | 5578 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5579 | expansion_notify, kind); |
5580 | }); | |
5581 | } | |
5582 | ||
5583 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5584 | symtab. */ | |
5585 | ||
5586 | static struct compunit_symtab * | |
5587 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5588 | CORE_ADDR pc) | |
5589 | { | |
5590 | int i; | |
5591 | ||
5592 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5593 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5594 | return cust; | |
5595 | ||
5596 | if (cust->includes == NULL) | |
5597 | return NULL; | |
5598 | ||
5599 | for (i = 0; cust->includes[i]; ++i) | |
5600 | { | |
5601 | struct compunit_symtab *s = cust->includes[i]; | |
5602 | ||
5603 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5604 | if (s != NULL) | |
5605 | return s; | |
5606 | } | |
5607 | ||
5608 | return NULL; | |
5609 | } | |
5610 | ||
5611 | static struct compunit_symtab * | |
5612 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5613 | struct bound_minimal_symbol msymbol, | |
5614 | CORE_ADDR pc, | |
5615 | struct obj_section *section, | |
5616 | int warn_if_readin) | |
5617 | { | |
5618 | struct dwarf2_per_cu_data *data; | |
5619 | struct compunit_symtab *result; | |
5620 | ||
927aa2e7 JK |
5621 | if (!objfile->psymtabs_addrmap) |
5622 | return NULL; | |
5623 | ||
5624 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, | |
5625 | pc); | |
5626 | if (!data) | |
5627 | return NULL; | |
5628 | ||
5629 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5630 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5631 | paddress (get_objfile_arch (objfile), pc)); | |
5632 | ||
5633 | result | |
5634 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
5635 | pc); | |
5636 | gdb_assert (result != NULL); | |
5637 | return result; | |
5638 | } | |
5639 | ||
5640 | static void | |
5641 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5642 | void *data, int need_fullname) | |
5643 | { | |
ed2dc618 SM |
5644 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5645 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5646 | |
5647 | if (!dwarf2_per_objfile->filenames_cache) | |
5648 | { | |
5649 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5650 | ||
5651 | htab_up visited (htab_create_alloc (10, | |
5652 | htab_hash_pointer, htab_eq_pointer, | |
5653 | NULL, xcalloc, xfree)); | |
5654 | ||
5655 | /* The rule is CUs specify all the files, including those used | |
5656 | by any TU, so there's no need to scan TUs here. We can | |
5657 | ignore file names coming from already-expanded CUs. */ | |
5658 | ||
5659 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5660 | { | |
ed2dc618 | 5661 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5662 | |
5663 | if (per_cu->v.quick->compunit_symtab) | |
5664 | { | |
5665 | void **slot = htab_find_slot (visited.get (), | |
5666 | per_cu->v.quick->file_names, | |
5667 | INSERT); | |
5668 | ||
5669 | *slot = per_cu->v.quick->file_names; | |
5670 | } | |
5671 | } | |
5672 | ||
5673 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5674 | { | |
ed2dc618 | 5675 | dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5676 | struct quick_file_names *file_data; |
5677 | void **slot; | |
5678 | ||
5679 | /* We only need to look at symtabs not already expanded. */ | |
5680 | if (per_cu->v.quick->compunit_symtab) | |
5681 | continue; | |
5682 | ||
5683 | file_data = dw2_get_file_names (per_cu); | |
5684 | if (file_data == NULL) | |
5685 | continue; | |
5686 | ||
5687 | slot = htab_find_slot (visited.get (), file_data, INSERT); | |
5688 | if (*slot) | |
5689 | { | |
5690 | /* Already visited. */ | |
5691 | continue; | |
5692 | } | |
5693 | *slot = file_data; | |
5694 | ||
5695 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5696 | { | |
5697 | const char *filename = file_data->file_names[j]; | |
5698 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5699 | } | |
5700 | } | |
5701 | } | |
5702 | ||
5703 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5704 | { | |
5705 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5706 | ||
5707 | if (need_fullname) | |
5708 | this_real_name = gdb_realpath (filename); | |
5709 | (*fun) (filename, this_real_name.get (), data); | |
5710 | }); | |
5711 | } | |
5712 | ||
5713 | static int | |
5714 | dw2_has_symbols (struct objfile *objfile) | |
5715 | { | |
5716 | return 1; | |
5717 | } | |
5718 | ||
5719 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5720 | { | |
5721 | dw2_has_symbols, | |
5722 | dw2_find_last_source_symtab, | |
5723 | dw2_forget_cached_source_info, | |
5724 | dw2_map_symtabs_matching_filename, | |
5725 | dw2_lookup_symbol, | |
5726 | dw2_print_stats, | |
5727 | dw2_dump, | |
5728 | dw2_relocate, | |
5729 | dw2_expand_symtabs_for_function, | |
5730 | dw2_expand_all_symtabs, | |
5731 | dw2_expand_symtabs_with_fullname, | |
5732 | dw2_map_matching_symbols, | |
5733 | dw2_expand_symtabs_matching, | |
5734 | dw2_find_pc_sect_compunit_symtab, | |
5735 | NULL, | |
5736 | dw2_map_symbol_filenames | |
5737 | }; | |
5738 | ||
5739 | /* DWARF-5 debug_names reader. */ | |
5740 | ||
5741 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5742 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5743 | ||
5744 | /* A helper function that reads the .debug_names section in SECTION | |
5745 | and fills in MAP. FILENAME is the name of the file containing the | |
5746 | section; it is used for error reporting. | |
5747 | ||
5748 | Returns true if all went well, false otherwise. */ | |
5749 | ||
5750 | static bool | |
5751 | read_debug_names_from_section (struct objfile *objfile, | |
5752 | const char *filename, | |
5753 | struct dwarf2_section_info *section, | |
5754 | mapped_debug_names &map) | |
5755 | { | |
5756 | if (dwarf2_section_empty_p (section)) | |
5757 | return false; | |
5758 | ||
5759 | /* Older elfutils strip versions could keep the section in the main | |
5760 | executable while splitting it for the separate debug info file. */ | |
5761 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5762 | return false; | |
5763 | ||
5764 | dwarf2_read_section (objfile, section); | |
5765 | ||
5766 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5767 | ||
5768 | const gdb_byte *addr = section->buffer; | |
5769 | ||
5770 | bfd *const abfd = get_section_bfd_owner (section); | |
5771 | ||
5772 | unsigned int bytes_read; | |
5773 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5774 | addr += bytes_read; | |
5775 | ||
5776 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5777 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5778 | if (bytes_read + length != section->size) | |
5779 | { | |
5780 | /* There may be multiple per-CU indices. */ | |
5781 | warning (_("Section .debug_names in %s length %s does not match " | |
5782 | "section length %s, ignoring .debug_names."), | |
5783 | filename, plongest (bytes_read + length), | |
5784 | pulongest (section->size)); | |
5785 | return false; | |
5786 | } | |
5787 | ||
5788 | /* The version number. */ | |
5789 | uint16_t version = read_2_bytes (abfd, addr); | |
5790 | addr += 2; | |
5791 | if (version != 5) | |
5792 | { | |
5793 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5794 | "ignoring .debug_names."), | |
5795 | filename, version); | |
5796 | return false; | |
5797 | } | |
5798 | ||
5799 | /* Padding. */ | |
5800 | uint16_t padding = read_2_bytes (abfd, addr); | |
5801 | addr += 2; | |
5802 | if (padding != 0) | |
5803 | { | |
5804 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5805 | "ignoring .debug_names."), | |
5806 | filename, padding); | |
5807 | return false; | |
5808 | } | |
5809 | ||
5810 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5811 | map.cu_count = read_4_bytes (abfd, addr); | |
5812 | addr += 4; | |
5813 | ||
5814 | /* local_type_unit_count - The number of TUs in the local TU | |
5815 | list. */ | |
5816 | map.tu_count = read_4_bytes (abfd, addr); | |
5817 | addr += 4; | |
5818 | ||
5819 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5820 | list. */ | |
5821 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5822 | addr += 4; | |
5823 | if (foreign_tu_count != 0) | |
5824 | { | |
5825 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5826 | "ignoring .debug_names."), | |
5827 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5828 | return false; | |
5829 | } | |
5830 | ||
5831 | /* bucket_count - The number of hash buckets in the hash lookup | |
5832 | table. */ | |
5833 | map.bucket_count = read_4_bytes (abfd, addr); | |
5834 | addr += 4; | |
5835 | ||
5836 | /* name_count - The number of unique names in the index. */ | |
5837 | map.name_count = read_4_bytes (abfd, addr); | |
5838 | addr += 4; | |
5839 | ||
5840 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5841 | table. */ | |
5842 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5843 | addr += 4; | |
5844 | ||
5845 | /* augmentation_string_size - The size in bytes of the augmentation | |
5846 | string. This value is rounded up to a multiple of 4. */ | |
5847 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5848 | addr += 4; | |
5849 | map.augmentation_is_gdb = ((augmentation_string_size | |
5850 | == sizeof (dwarf5_augmentation)) | |
5851 | && memcmp (addr, dwarf5_augmentation, | |
5852 | sizeof (dwarf5_augmentation)) == 0); | |
5853 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5854 | addr += augmentation_string_size; | |
5855 | ||
5856 | /* List of CUs */ | |
5857 | map.cu_table_reordered = addr; | |
5858 | addr += map.cu_count * map.offset_size; | |
5859 | ||
5860 | /* List of Local TUs */ | |
5861 | map.tu_table_reordered = addr; | |
5862 | addr += map.tu_count * map.offset_size; | |
5863 | ||
5864 | /* Hash Lookup Table */ | |
5865 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5866 | addr += map.bucket_count * 4; | |
5867 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5868 | addr += map.name_count * 4; | |
5869 | ||
5870 | /* Name Table */ | |
5871 | map.name_table_string_offs_reordered = addr; | |
5872 | addr += map.name_count * map.offset_size; | |
5873 | map.name_table_entry_offs_reordered = addr; | |
5874 | addr += map.name_count * map.offset_size; | |
5875 | ||
5876 | const gdb_byte *abbrev_table_start = addr; | |
5877 | for (;;) | |
5878 | { | |
5879 | unsigned int bytes_read; | |
5880 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5881 | addr += bytes_read; | |
5882 | if (index_num == 0) | |
5883 | break; | |
5884 | ||
5885 | const auto insertpair | |
5886 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5887 | if (!insertpair.second) | |
5888 | { | |
5889 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5890 | "ignoring .debug_names."), | |
5891 | filename, pulongest (index_num)); | |
5892 | return false; | |
5893 | } | |
5894 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5895 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5896 | addr += bytes_read; | |
5897 | ||
5898 | for (;;) | |
5899 | { | |
5900 | mapped_debug_names::index_val::attr attr; | |
5901 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5902 | addr += bytes_read; | |
5903 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5904 | addr += bytes_read; | |
5905 | if (attr.form == DW_FORM_implicit_const) | |
5906 | { | |
5907 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5908 | &bytes_read); | |
5909 | addr += bytes_read; | |
5910 | } | |
5911 | if (attr.dw_idx == 0 && attr.form == 0) | |
5912 | break; | |
5913 | indexval.attr_vec.push_back (std::move (attr)); | |
5914 | } | |
5915 | } | |
5916 | if (addr != abbrev_table_start + abbrev_table_size) | |
5917 | { | |
5918 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5919 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5920 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5921 | return false; | |
5922 | } | |
5923 | map.entry_pool = addr; | |
5924 | ||
5925 | return true; | |
5926 | } | |
5927 | ||
5928 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5929 | list. */ | |
5930 | ||
5931 | static void | |
ed2dc618 | 5932 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5933 | const mapped_debug_names &map, |
5934 | dwarf2_section_info §ion, | |
5935 | bool is_dwz, int base_offset) | |
5936 | { | |
5937 | sect_offset sect_off_prev; | |
5938 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5939 | { | |
5940 | sect_offset sect_off_next; | |
5941 | if (i < map.cu_count) | |
5942 | { | |
5943 | sect_off_next | |
5944 | = (sect_offset) (extract_unsigned_integer | |
5945 | (map.cu_table_reordered + i * map.offset_size, | |
5946 | map.offset_size, | |
5947 | map.dwarf5_byte_order)); | |
5948 | } | |
5949 | else | |
5950 | sect_off_next = (sect_offset) section.size; | |
5951 | if (i >= 1) | |
5952 | { | |
5953 | const ULONGEST length = sect_off_next - sect_off_prev; | |
5954 | dwarf2_per_objfile->all_comp_units[base_offset + (i - 1)] | |
ed2dc618 | 5955 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 JK |
5956 | sect_off_prev, length); |
5957 | } | |
5958 | sect_off_prev = sect_off_next; | |
5959 | } | |
5960 | } | |
5961 | ||
5962 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5963 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5964 | |
5965 | static void | |
ed2dc618 | 5966 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5967 | const mapped_debug_names &map, |
5968 | const mapped_debug_names &dwz_map) | |
5969 | { | |
ed2dc618 | 5970 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
5971 | |
5972 | dwarf2_per_objfile->n_comp_units = map.cu_count + dwz_map.cu_count; | |
5973 | dwarf2_per_objfile->all_comp_units | |
5974 | = XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
5975 | dwarf2_per_objfile->n_comp_units); | |
5976 | ||
ed2dc618 SM |
5977 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5978 | dwarf2_per_objfile->info, | |
927aa2e7 JK |
5979 | false /* is_dwz */, |
5980 | 0 /* base_offset */); | |
5981 | ||
5982 | if (dwz_map.cu_count == 0) | |
5983 | return; | |
5984 | ||
ed2dc618 SM |
5985 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5986 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
927aa2e7 JK |
5987 | true /* is_dwz */, |
5988 | map.cu_count /* base_offset */); | |
5989 | } | |
5990 | ||
5991 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5992 | elements of all the CUs and return true. Otherwise, return false. */ | |
5993 | ||
5994 | static bool | |
ed2dc618 | 5995 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5996 | { |
ed2dc618 SM |
5997 | mapped_debug_names local_map (dwarf2_per_objfile); |
5998 | mapped_debug_names dwz_map (dwarf2_per_objfile); | |
5999 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
6000 | |
6001 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
6002 | &dwarf2_per_objfile->debug_names, | |
6003 | local_map)) | |
6004 | return false; | |
6005 | ||
6006 | /* Don't use the index if it's empty. */ | |
6007 | if (local_map.name_count == 0) | |
6008 | return false; | |
6009 | ||
6010 | /* If there is a .dwz file, read it so we can get its CU list as | |
6011 | well. */ | |
ed2dc618 | 6012 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
6013 | if (dwz != NULL) |
6014 | { | |
6015 | if (!read_debug_names_from_section (objfile, | |
6016 | bfd_get_filename (dwz->dwz_bfd), | |
6017 | &dwz->debug_names, dwz_map)) | |
6018 | { | |
6019 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
6020 | bfd_get_filename (dwz->dwz_bfd)); | |
6021 | return false; | |
6022 | } | |
6023 | } | |
6024 | ||
ed2dc618 | 6025 | create_cus_from_debug_names (dwarf2_per_objfile, local_map, dwz_map); |
927aa2e7 JK |
6026 | |
6027 | if (local_map.tu_count != 0) | |
6028 | { | |
6029 | /* We can only handle a single .debug_types when we have an | |
6030 | index. */ | |
6031 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
6032 | return false; | |
6033 | ||
6034 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
6035 | dwarf2_per_objfile->types, 0); | |
6036 | ||
6037 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 6038 | (dwarf2_per_objfile, local_map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
6039 | } |
6040 | ||
ed2dc618 SM |
6041 | create_addrmap_from_aranges (dwarf2_per_objfile, |
6042 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 6043 | |
ed2dc618 SM |
6044 | dwarf2_per_objfile->debug_names_table.reset |
6045 | (new mapped_debug_names (dwarf2_per_objfile)); | |
927aa2e7 JK |
6046 | *dwarf2_per_objfile->debug_names_table = std::move (local_map); |
6047 | dwarf2_per_objfile->using_index = 1; | |
6048 | dwarf2_per_objfile->quick_file_names_table = | |
6049 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
6050 | ||
6051 | return true; | |
6052 | } | |
6053 | ||
6054 | /* Symbol name hashing function as specified by DWARF-5. */ | |
6055 | ||
6056 | static uint32_t | |
6057 | dwarf5_djb_hash (const char *str_) | |
6058 | { | |
6059 | const unsigned char *str = (const unsigned char *) str_; | |
6060 | ||
6061 | /* Note: tolower here ignores UTF-8, which isn't fully compliant. | |
6062 | See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */ | |
6063 | ||
6064 | uint32_t hash = 5381; | |
6065 | while (int c = *str++) | |
6066 | hash = hash * 33 + tolower (c); | |
6067 | return hash; | |
6068 | } | |
6069 | ||
6070 | /* Type used to manage iterating over all CUs looking for a symbol for | |
6071 | .debug_names. */ | |
6072 | ||
6073 | class dw2_debug_names_iterator | |
6074 | { | |
6075 | public: | |
6076 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
6077 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
6078 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
6079 | bool want_specific_block, | |
6080 | block_enum block_index, domain_enum domain, | |
6081 | const char *name) | |
6082 | : m_map (map), m_want_specific_block (want_specific_block), | |
6083 | m_block_index (block_index), m_domain (domain), | |
6084 | m_addr (find_vec_in_debug_names (map, name)) | |
6085 | {} | |
6086 | ||
6087 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
6088 | search_domain search, uint32_t namei) | |
6089 | : m_map (map), | |
6090 | m_search (search), | |
6091 | m_addr (find_vec_in_debug_names (map, namei)) | |
6092 | {} | |
6093 | ||
6094 | /* Return the next matching CU or NULL if there are no more. */ | |
6095 | dwarf2_per_cu_data *next (); | |
6096 | ||
6097 | private: | |
6098 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
6099 | const char *name); | |
6100 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
6101 | uint32_t namei); | |
6102 | ||
6103 | /* The internalized form of .debug_names. */ | |
6104 | const mapped_debug_names &m_map; | |
6105 | ||
6106 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
6107 | const bool m_want_specific_block = false; | |
6108 | ||
6109 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
6110 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
6111 | value. */ | |
6112 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
6113 | ||
6114 | /* The kind of symbol we're looking for. */ | |
6115 | const domain_enum m_domain = UNDEF_DOMAIN; | |
6116 | const search_domain m_search = ALL_DOMAIN; | |
6117 | ||
6118 | /* The list of CUs from the index entry of the symbol, or NULL if | |
6119 | not found. */ | |
6120 | const gdb_byte *m_addr; | |
6121 | }; | |
6122 | ||
6123 | const char * | |
6124 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
6125 | { | |
6126 | const ULONGEST namei_string_offs | |
6127 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
6128 | + namei * offset_size), | |
6129 | offset_size, | |
6130 | dwarf5_byte_order); | |
6131 | return read_indirect_string_at_offset | |
ed2dc618 | 6132 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
6133 | } |
6134 | ||
6135 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
6136 | found, return pointer to its pool data. If NAME cannot be found, | |
6137 | return NULL. */ | |
6138 | ||
6139 | const gdb_byte * | |
6140 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6141 | (const mapped_debug_names &map, const char *name) | |
6142 | { | |
6143 | int (*cmp) (const char *, const char *); | |
6144 | ||
6145 | if (current_language->la_language == language_cplus | |
6146 | || current_language->la_language == language_fortran | |
6147 | || current_language->la_language == language_d) | |
6148 | { | |
6149 | /* NAME is already canonical. Drop any qualifiers as | |
6150 | .debug_names does not contain any. */ | |
6151 | ||
6152 | if (strchr (name, '(') != NULL) | |
6153 | { | |
6154 | gdb::unique_xmalloc_ptr<char> without_params | |
6155 | = cp_remove_params (name); | |
6156 | ||
6157 | if (without_params != NULL) | |
6158 | { | |
6159 | name = without_params.get(); | |
6160 | } | |
6161 | } | |
6162 | } | |
6163 | ||
6164 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
6165 | ||
6166 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
6167 | uint32_t namei | |
6168 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6169 | (map.bucket_table_reordered | |
6170 | + (full_hash % map.bucket_count)), 4, | |
6171 | map.dwarf5_byte_order); | |
6172 | if (namei == 0) | |
6173 | return NULL; | |
6174 | --namei; | |
6175 | if (namei >= map.name_count) | |
6176 | { | |
6177 | complaint (&symfile_complaints, | |
6178 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6179 | "[in module %s]"), | |
6180 | namei, map.name_count, | |
ed2dc618 | 6181 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
6182 | return NULL; |
6183 | } | |
6184 | ||
6185 | for (;;) | |
6186 | { | |
6187 | const uint32_t namei_full_hash | |
6188 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6189 | (map.hash_table_reordered + namei), 4, | |
6190 | map.dwarf5_byte_order); | |
6191 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
6192 | return NULL; | |
6193 | ||
6194 | if (full_hash == namei_full_hash) | |
6195 | { | |
6196 | const char *const namei_string = map.namei_to_name (namei); | |
6197 | ||
6198 | #if 0 /* An expensive sanity check. */ | |
6199 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
6200 | { | |
6201 | complaint (&symfile_complaints, | |
6202 | _("Wrong .debug_names hash for string at index %u " | |
6203 | "[in module %s]"), | |
6204 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
6205 | return NULL; | |
6206 | } | |
6207 | #endif | |
6208 | ||
6209 | if (cmp (namei_string, name) == 0) | |
6210 | { | |
6211 | const ULONGEST namei_entry_offs | |
6212 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6213 | + namei * map.offset_size), | |
6214 | map.offset_size, map.dwarf5_byte_order); | |
6215 | return map.entry_pool + namei_entry_offs; | |
6216 | } | |
6217 | } | |
6218 | ||
6219 | ++namei; | |
6220 | if (namei >= map.name_count) | |
6221 | return NULL; | |
6222 | } | |
6223 | } | |
6224 | ||
6225 | const gdb_byte * | |
6226 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6227 | (const mapped_debug_names &map, uint32_t namei) | |
6228 | { | |
6229 | if (namei >= map.name_count) | |
6230 | { | |
6231 | complaint (&symfile_complaints, | |
6232 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6233 | "[in module %s]"), | |
6234 | namei, map.name_count, | |
ed2dc618 | 6235 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
6236 | return NULL; |
6237 | } | |
6238 | ||
6239 | const ULONGEST namei_entry_offs | |
6240 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6241 | + namei * map.offset_size), | |
6242 | map.offset_size, map.dwarf5_byte_order); | |
6243 | return map.entry_pool + namei_entry_offs; | |
6244 | } | |
6245 | ||
6246 | /* See dw2_debug_names_iterator. */ | |
6247 | ||
6248 | dwarf2_per_cu_data * | |
6249 | dw2_debug_names_iterator::next () | |
6250 | { | |
6251 | if (m_addr == NULL) | |
6252 | return NULL; | |
6253 | ||
ed2dc618 SM |
6254 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
6255 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6256 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
6257 | |
6258 | again: | |
6259 | ||
6260 | unsigned int bytes_read; | |
6261 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6262 | m_addr += bytes_read; | |
6263 | if (abbrev == 0) | |
6264 | return NULL; | |
6265 | ||
6266 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
6267 | if (indexval_it == m_map.abbrev_map.cend ()) | |
6268 | { | |
6269 | complaint (&symfile_complaints, | |
6270 | _("Wrong .debug_names undefined abbrev code %s " | |
6271 | "[in module %s]"), | |
ed2dc618 | 6272 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
6273 | return NULL; |
6274 | } | |
6275 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
6276 | bool have_is_static = false; | |
6277 | bool is_static; | |
6278 | dwarf2_per_cu_data *per_cu = NULL; | |
6279 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
6280 | { | |
6281 | ULONGEST ull; | |
6282 | switch (attr.form) | |
6283 | { | |
6284 | case DW_FORM_implicit_const: | |
6285 | ull = attr.implicit_const; | |
6286 | break; | |
6287 | case DW_FORM_flag_present: | |
6288 | ull = 1; | |
6289 | break; | |
6290 | case DW_FORM_udata: | |
6291 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6292 | m_addr += bytes_read; | |
6293 | break; | |
6294 | default: | |
6295 | complaint (&symfile_complaints, | |
6296 | _("Unsupported .debug_names form %s [in module %s]"), | |
6297 | dwarf_form_name (attr.form), | |
ed2dc618 | 6298 | objfile_name (objfile)); |
927aa2e7 JK |
6299 | return NULL; |
6300 | } | |
6301 | switch (attr.dw_idx) | |
6302 | { | |
6303 | case DW_IDX_compile_unit: | |
6304 | /* Don't crash on bad data. */ | |
8af5c486 | 6305 | if (ull >= dwarf2_per_objfile->n_comp_units) |
927aa2e7 JK |
6306 | { |
6307 | complaint (&symfile_complaints, | |
6308 | _(".debug_names entry has bad CU index %s" | |
6309 | " [in module %s]"), | |
6310 | pulongest (ull), | |
6311 | objfile_name (dwarf2_per_objfile->objfile)); | |
6312 | continue; | |
6313 | } | |
ed2dc618 | 6314 | per_cu = dw2_get_cutu (dwarf2_per_objfile, ull); |
927aa2e7 | 6315 | break; |
8af5c486 JK |
6316 | case DW_IDX_type_unit: |
6317 | /* Don't crash on bad data. */ | |
6318 | if (ull >= dwarf2_per_objfile->n_type_units) | |
6319 | { | |
6320 | complaint (&symfile_complaints, | |
6321 | _(".debug_names entry has bad TU index %s" | |
6322 | " [in module %s]"), | |
6323 | pulongest (ull), | |
6324 | objfile_name (dwarf2_per_objfile->objfile)); | |
6325 | continue; | |
6326 | } | |
ed2dc618 SM |
6327 | per_cu = dw2_get_cutu (dwarf2_per_objfile, |
6328 | dwarf2_per_objfile->n_comp_units + ull); | |
8af5c486 | 6329 | break; |
927aa2e7 JK |
6330 | case DW_IDX_GNU_internal: |
6331 | if (!m_map.augmentation_is_gdb) | |
6332 | break; | |
6333 | have_is_static = true; | |
6334 | is_static = true; | |
6335 | break; | |
6336 | case DW_IDX_GNU_external: | |
6337 | if (!m_map.augmentation_is_gdb) | |
6338 | break; | |
6339 | have_is_static = true; | |
6340 | is_static = false; | |
6341 | break; | |
6342 | } | |
6343 | } | |
6344 | ||
6345 | /* Skip if already read in. */ | |
6346 | if (per_cu->v.quick->compunit_symtab) | |
6347 | goto again; | |
6348 | ||
6349 | /* Check static vs global. */ | |
6350 | if (have_is_static) | |
6351 | { | |
6352 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
6353 | if (m_want_specific_block && want_static != is_static) | |
6354 | goto again; | |
6355 | } | |
6356 | ||
6357 | /* Match dw2_symtab_iter_next, symbol_kind | |
6358 | and debug_names::psymbol_tag. */ | |
6359 | switch (m_domain) | |
6360 | { | |
6361 | case VAR_DOMAIN: | |
6362 | switch (indexval.dwarf_tag) | |
6363 | { | |
6364 | case DW_TAG_variable: | |
6365 | case DW_TAG_subprogram: | |
6366 | /* Some types are also in VAR_DOMAIN. */ | |
6367 | case DW_TAG_typedef: | |
6368 | case DW_TAG_structure_type: | |
6369 | break; | |
6370 | default: | |
6371 | goto again; | |
6372 | } | |
6373 | break; | |
6374 | case STRUCT_DOMAIN: | |
6375 | switch (indexval.dwarf_tag) | |
6376 | { | |
6377 | case DW_TAG_typedef: | |
6378 | case DW_TAG_structure_type: | |
6379 | break; | |
6380 | default: | |
6381 | goto again; | |
6382 | } | |
6383 | break; | |
6384 | case LABEL_DOMAIN: | |
6385 | switch (indexval.dwarf_tag) | |
6386 | { | |
6387 | case 0: | |
6388 | case DW_TAG_variable: | |
6389 | break; | |
6390 | default: | |
6391 | goto again; | |
6392 | } | |
6393 | break; | |
6394 | default: | |
6395 | break; | |
6396 | } | |
6397 | ||
6398 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6399 | debug_names::psymbol_tag. */ | |
6400 | switch (m_search) | |
4b514bc8 | 6401 | { |
927aa2e7 JK |
6402 | case VARIABLES_DOMAIN: |
6403 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6404 | { |
927aa2e7 JK |
6405 | case DW_TAG_variable: |
6406 | break; | |
6407 | default: | |
6408 | goto again; | |
4b514bc8 | 6409 | } |
927aa2e7 JK |
6410 | break; |
6411 | case FUNCTIONS_DOMAIN: | |
6412 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6413 | { |
927aa2e7 JK |
6414 | case DW_TAG_subprogram: |
6415 | break; | |
6416 | default: | |
6417 | goto again; | |
4b514bc8 | 6418 | } |
927aa2e7 JK |
6419 | break; |
6420 | case TYPES_DOMAIN: | |
6421 | switch (indexval.dwarf_tag) | |
6422 | { | |
6423 | case DW_TAG_typedef: | |
6424 | case DW_TAG_structure_type: | |
6425 | break; | |
6426 | default: | |
6427 | goto again; | |
6428 | } | |
6429 | break; | |
6430 | default: | |
6431 | break; | |
4b514bc8 | 6432 | } |
927aa2e7 JK |
6433 | |
6434 | return per_cu; | |
4b514bc8 | 6435 | } |
61920122 | 6436 | |
927aa2e7 JK |
6437 | static struct compunit_symtab * |
6438 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6439 | const char *name, domain_enum domain) | |
4b514bc8 | 6440 | { |
927aa2e7 | 6441 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6442 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6443 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6444 | |
927aa2e7 JK |
6445 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6446 | if (!mapp) | |
61920122 | 6447 | { |
927aa2e7 JK |
6448 | /* index is NULL if OBJF_READNOW. */ |
6449 | return NULL; | |
6450 | } | |
6451 | const auto &map = *mapp; | |
9291a0cd | 6452 | |
927aa2e7 JK |
6453 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6454 | block_index, domain, name); | |
9703b513 | 6455 | |
927aa2e7 JK |
6456 | struct compunit_symtab *stab_best = NULL; |
6457 | struct dwarf2_per_cu_data *per_cu; | |
6458 | while ((per_cu = iter.next ()) != NULL) | |
6459 | { | |
6460 | struct symbol *sym, *with_opaque = NULL; | |
6461 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
6462 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
6463 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6464 | |
927aa2e7 JK |
6465 | sym = block_find_symbol (block, name, domain, |
6466 | block_find_non_opaque_type_preferred, | |
6467 | &with_opaque); | |
9703b513 | 6468 | |
927aa2e7 JK |
6469 | /* Some caution must be observed with overloaded functions and |
6470 | methods, since the index will not contain any overload | |
6471 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6472 | |
927aa2e7 JK |
6473 | if (sym != NULL |
6474 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6475 | return stab; | |
6476 | if (with_opaque != NULL | |
6477 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6478 | stab_best = stab; | |
9703b513 | 6479 | |
927aa2e7 | 6480 | /* Keep looking through other CUs. */ |
9703b513 TT |
6481 | } |
6482 | ||
927aa2e7 | 6483 | return stab_best; |
9703b513 TT |
6484 | } |
6485 | ||
927aa2e7 JK |
6486 | /* This dumps minimal information about .debug_names. It is called |
6487 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6488 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6489 | |
927aa2e7 JK |
6490 | static void |
6491 | dw2_debug_names_dump (struct objfile *objfile) | |
6492 | { | |
ed2dc618 SM |
6493 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6494 | = get_dwarf2_per_objfile (objfile); | |
6495 | ||
927aa2e7 JK |
6496 | gdb_assert (dwarf2_per_objfile->using_index); |
6497 | printf_filtered (".debug_names:"); | |
6498 | if (dwarf2_per_objfile->debug_names_table) | |
6499 | printf_filtered (" exists\n"); | |
6500 | else | |
6501 | printf_filtered (" faked for \"readnow\"\n"); | |
6502 | printf_filtered ("\n"); | |
9291a0cd TT |
6503 | } |
6504 | ||
9291a0cd | 6505 | static void |
927aa2e7 JK |
6506 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6507 | const char *func_name) | |
9291a0cd | 6508 | { |
ed2dc618 SM |
6509 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6510 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6511 | |
927aa2e7 JK |
6512 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6513 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6514 | { |
927aa2e7 | 6515 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6516 | |
927aa2e7 JK |
6517 | /* Note: It doesn't matter what we pass for block_index here. */ |
6518 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6519 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6520 | |
927aa2e7 JK |
6521 | struct dwarf2_per_cu_data *per_cu; |
6522 | while ((per_cu = iter.next ()) != NULL) | |
6523 | dw2_instantiate_symtab (per_cu); | |
6524 | } | |
6525 | } | |
24c79950 | 6526 | |
927aa2e7 JK |
6527 | static void |
6528 | dw2_debug_names_expand_symtabs_matching | |
6529 | (struct objfile *objfile, | |
6530 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6531 | const lookup_name_info &lookup_name, | |
6532 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6533 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6534 | enum search_domain kind) | |
6535 | { | |
ed2dc618 SM |
6536 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6537 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6538 | |
927aa2e7 JK |
6539 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6540 | if (!dwarf2_per_objfile->debug_names_table) | |
6541 | return; | |
9291a0cd | 6542 | |
ed2dc618 | 6543 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6544 | |
44ed8f3e | 6545 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6546 | |
44ed8f3e PA |
6547 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6548 | symbol_matcher, | |
6549 | kind, [&] (offset_type namei) | |
927aa2e7 | 6550 | { |
927aa2e7 JK |
6551 | /* The name was matched, now expand corresponding CUs that were |
6552 | marked. */ | |
6553 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6554 | |
927aa2e7 JK |
6555 | struct dwarf2_per_cu_data *per_cu; |
6556 | while ((per_cu = iter.next ()) != NULL) | |
6557 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6558 | expansion_notify); | |
44ed8f3e | 6559 | }); |
9291a0cd TT |
6560 | } |
6561 | ||
927aa2e7 | 6562 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6563 | { |
6564 | dw2_has_symbols, | |
6565 | dw2_find_last_source_symtab, | |
6566 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6567 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6568 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6569 | dw2_print_stats, |
927aa2e7 | 6570 | dw2_debug_names_dump, |
9291a0cd | 6571 | dw2_relocate, |
927aa2e7 | 6572 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6573 | dw2_expand_all_symtabs, |
652a8996 | 6574 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6575 | dw2_map_matching_symbols, |
927aa2e7 | 6576 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6577 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6578 | NULL, |
9291a0cd TT |
6579 | dw2_map_symbol_filenames |
6580 | }; | |
6581 | ||
3c0aa29a | 6582 | /* See symfile.h. */ |
9291a0cd | 6583 | |
3c0aa29a PA |
6584 | bool |
6585 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6586 | { |
ed2dc618 SM |
6587 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6588 | = get_dwarf2_per_objfile (objfile); | |
6589 | ||
9291a0cd TT |
6590 | /* If we're about to read full symbols, don't bother with the |
6591 | indices. In this case we also don't care if some other debug | |
6592 | format is making psymtabs, because they are all about to be | |
6593 | expanded anyway. */ | |
6594 | if ((objfile->flags & OBJF_READNOW)) | |
6595 | { | |
6596 | int i; | |
6597 | ||
6598 | dwarf2_per_objfile->using_index = 1; | |
ed2dc618 SM |
6599 | create_all_comp_units (dwarf2_per_objfile); |
6600 | create_all_type_units (dwarf2_per_objfile); | |
7b9f3c50 DE |
6601 | dwarf2_per_objfile->quick_file_names_table = |
6602 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 6603 | |
1fd400ff | 6604 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 6605 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 6606 | { |
ed2dc618 | 6607 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
9291a0cd | 6608 | |
e254ef6a DE |
6609 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6610 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6611 | } |
6612 | ||
6613 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6614 | these functions will be no-ops because we will have expanded | |
6615 | all symtabs. */ | |
3c0aa29a PA |
6616 | *index_kind = dw_index_kind::GDB_INDEX; |
6617 | return true; | |
9291a0cd TT |
6618 | } |
6619 | ||
ed2dc618 | 6620 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6621 | { |
6622 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6623 | return true; | |
6624 | } | |
927aa2e7 | 6625 | |
9291a0cd | 6626 | if (dwarf2_read_index (objfile)) |
3c0aa29a PA |
6627 | { |
6628 | *index_kind = dw_index_kind::GDB_INDEX; | |
6629 | return true; | |
6630 | } | |
9291a0cd | 6631 | |
3c0aa29a | 6632 | return false; |
9291a0cd TT |
6633 | } |
6634 | ||
6635 | \f | |
6636 | ||
dce234bc PP |
6637 | /* Build a partial symbol table. */ |
6638 | ||
6639 | void | |
f29dff0a | 6640 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6641 | { |
ed2dc618 SM |
6642 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6643 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6644 | |
af5bf4ad SM |
6645 | if (objfile->global_psymbols.capacity () == 0 |
6646 | && objfile->static_psymbols.capacity () == 0) | |
6647 | init_psymbol_list (objfile, 1024); | |
c906108c | 6648 | |
492d29ea | 6649 | TRY |
c9bf0622 TT |
6650 | { |
6651 | /* This isn't really ideal: all the data we allocate on the | |
6652 | objfile's obstack is still uselessly kept around. However, | |
6653 | freeing it seems unsafe. */ | |
906768f9 | 6654 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6655 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6656 | psymtabs.keep (); |
c9bf0622 | 6657 | } |
492d29ea PA |
6658 | CATCH (except, RETURN_MASK_ERROR) |
6659 | { | |
6660 | exception_print (gdb_stderr, except); | |
6661 | } | |
6662 | END_CATCH | |
c906108c | 6663 | } |
c906108c | 6664 | |
1ce1cefd DE |
6665 | /* Return the total length of the CU described by HEADER. */ |
6666 | ||
6667 | static unsigned int | |
6668 | get_cu_length (const struct comp_unit_head *header) | |
6669 | { | |
6670 | return header->initial_length_size + header->length; | |
6671 | } | |
6672 | ||
9c541725 | 6673 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6674 | |
9c541725 PA |
6675 | static inline bool |
6676 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6677 | { |
9c541725 PA |
6678 | sect_offset bottom = cu_header->sect_off; |
6679 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6680 | |
9c541725 | 6681 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6682 | } |
6683 | ||
3b80fe9b DE |
6684 | /* Find the base address of the compilation unit for range lists and |
6685 | location lists. It will normally be specified by DW_AT_low_pc. | |
6686 | In DWARF-3 draft 4, the base address could be overridden by | |
6687 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6688 | compilation units with discontinuous ranges. */ | |
6689 | ||
6690 | static void | |
6691 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6692 | { | |
6693 | struct attribute *attr; | |
6694 | ||
6695 | cu->base_known = 0; | |
6696 | cu->base_address = 0; | |
6697 | ||
6698 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6699 | if (attr) | |
6700 | { | |
31aa7e4e | 6701 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6702 | cu->base_known = 1; |
6703 | } | |
6704 | else | |
6705 | { | |
6706 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6707 | if (attr) | |
6708 | { | |
31aa7e4e | 6709 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6710 | cu->base_known = 1; |
6711 | } | |
6712 | } | |
6713 | } | |
6714 | ||
93311388 | 6715 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6716 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6717 | NOTE: This leaves members offset, first_die_offset to be filled in |
6718 | by the caller. */ | |
107d2387 | 6719 | |
d521ce57 | 6720 | static const gdb_byte * |
107d2387 | 6721 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6722 | const gdb_byte *info_ptr, |
6723 | struct dwarf2_section_info *section, | |
6724 | rcuh_kind section_kind) | |
107d2387 AC |
6725 | { |
6726 | int signed_addr; | |
891d2f0b | 6727 | unsigned int bytes_read; |
43988095 JK |
6728 | const char *filename = get_section_file_name (section); |
6729 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6730 | |
6731 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6732 | cu_header->initial_length_size = bytes_read; | |
6733 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6734 | info_ptr += bytes_read; |
107d2387 AC |
6735 | cu_header->version = read_2_bytes (abfd, info_ptr); |
6736 | info_ptr += 2; | |
43988095 JK |
6737 | if (cu_header->version < 5) |
6738 | switch (section_kind) | |
6739 | { | |
6740 | case rcuh_kind::COMPILE: | |
6741 | cu_header->unit_type = DW_UT_compile; | |
6742 | break; | |
6743 | case rcuh_kind::TYPE: | |
6744 | cu_header->unit_type = DW_UT_type; | |
6745 | break; | |
6746 | default: | |
6747 | internal_error (__FILE__, __LINE__, | |
6748 | _("read_comp_unit_head: invalid section_kind")); | |
6749 | } | |
6750 | else | |
6751 | { | |
6752 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6753 | (read_1_byte (abfd, info_ptr)); | |
6754 | info_ptr += 1; | |
6755 | switch (cu_header->unit_type) | |
6756 | { | |
6757 | case DW_UT_compile: | |
6758 | if (section_kind != rcuh_kind::COMPILE) | |
6759 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6760 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6761 | filename); | |
6762 | break; | |
6763 | case DW_UT_type: | |
6764 | section_kind = rcuh_kind::TYPE; | |
6765 | break; | |
6766 | default: | |
6767 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6768 | "(is %d, should be %d or %d) [in module %s]"), | |
6769 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6770 | } | |
6771 | ||
6772 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6773 | info_ptr += 1; | |
6774 | } | |
9c541725 PA |
6775 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6776 | cu_header, | |
6777 | &bytes_read); | |
613e1657 | 6778 | info_ptr += bytes_read; |
43988095 JK |
6779 | if (cu_header->version < 5) |
6780 | { | |
6781 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6782 | info_ptr += 1; | |
6783 | } | |
107d2387 AC |
6784 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6785 | if (signed_addr < 0) | |
8e65ff28 | 6786 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6787 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6788 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6789 | |
43988095 JK |
6790 | if (section_kind == rcuh_kind::TYPE) |
6791 | { | |
6792 | LONGEST type_offset; | |
6793 | ||
6794 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6795 | info_ptr += 8; | |
6796 | ||
6797 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6798 | info_ptr += bytes_read; | |
9c541725 PA |
6799 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6800 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6801 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6802 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6803 | filename); | |
6804 | } | |
6805 | ||
107d2387 AC |
6806 | return info_ptr; |
6807 | } | |
6808 | ||
36586728 TT |
6809 | /* Helper function that returns the proper abbrev section for |
6810 | THIS_CU. */ | |
6811 | ||
6812 | static struct dwarf2_section_info * | |
6813 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6814 | { | |
6815 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6816 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6817 | |
6818 | if (this_cu->is_dwz) | |
ed2dc618 | 6819 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6820 | else |
6821 | abbrev = &dwarf2_per_objfile->abbrev; | |
6822 | ||
6823 | return abbrev; | |
6824 | } | |
6825 | ||
9ff913ba DE |
6826 | /* Subroutine of read_and_check_comp_unit_head and |
6827 | read_and_check_type_unit_head to simplify them. | |
6828 | Perform various error checking on the header. */ | |
6829 | ||
6830 | static void | |
ed2dc618 SM |
6831 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6832 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6833 | struct dwarf2_section_info *section, |
6834 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6835 | { |
a32a8923 | 6836 | const char *filename = get_section_file_name (section); |
9ff913ba | 6837 | |
43988095 | 6838 | if (header->version < 2 || header->version > 5) |
9ff913ba | 6839 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 6840 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
6841 | filename); |
6842 | ||
9c541725 | 6843 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6844 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9c541725 PA |
6845 | error (_("Dwarf Error: bad offset (0x%x) in compilation unit header " |
6846 | "(offset 0x%x + 6) [in module %s]"), | |
6847 | to_underlying (header->abbrev_sect_off), | |
6848 | to_underlying (header->sect_off), | |
9ff913ba DE |
6849 | filename); |
6850 | ||
9c541725 | 6851 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6852 | avoid potential 32-bit overflow. */ |
9c541725 | 6853 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6854 | > section->size) |
9c541725 PA |
6855 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
6856 | "(offset 0x%x + 0) [in module %s]"), | |
6857 | header->length, to_underlying (header->sect_off), | |
9ff913ba DE |
6858 | filename); |
6859 | } | |
6860 | ||
6861 | /* Read in a CU/TU header and perform some basic error checking. | |
6862 | The contents of the header are stored in HEADER. | |
6863 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6864 | |
d521ce57 | 6865 | static const gdb_byte * |
ed2dc618 SM |
6866 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6867 | struct comp_unit_head *header, | |
9ff913ba | 6868 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6869 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6870 | const gdb_byte *info_ptr, |
43988095 | 6871 | rcuh_kind section_kind) |
72bf9492 | 6872 | { |
d521ce57 | 6873 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6874 | |
9c541725 | 6875 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6876 | |
43988095 | 6877 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6878 | |
9c541725 | 6879 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6880 | |
ed2dc618 SM |
6881 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6882 | abbrev_section); | |
9ff913ba DE |
6883 | |
6884 | return info_ptr; | |
348e048f DE |
6885 | } |
6886 | ||
f4dc4d17 DE |
6887 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6888 | ||
6889 | static sect_offset | |
ed2dc618 SM |
6890 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6891 | struct dwarf2_section_info *section, | |
9c541725 | 6892 | sect_offset sect_off) |
f4dc4d17 | 6893 | { |
a32a8923 | 6894 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6895 | const gdb_byte *info_ptr; |
ac298888 | 6896 | unsigned int initial_length_size, offset_size; |
43988095 | 6897 | uint16_t version; |
f4dc4d17 DE |
6898 | |
6899 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6900 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6901 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6902 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6903 | info_ptr += initial_length_size; |
6904 | ||
6905 | version = read_2_bytes (abfd, info_ptr); | |
6906 | info_ptr += 2; | |
6907 | if (version >= 5) | |
6908 | { | |
6909 | /* Skip unit type and address size. */ | |
6910 | info_ptr += 2; | |
6911 | } | |
6912 | ||
9c541725 | 6913 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6914 | } |
6915 | ||
aaa75496 JB |
6916 | /* Allocate a new partial symtab for file named NAME and mark this new |
6917 | partial symtab as being an include of PST. */ | |
6918 | ||
6919 | static void | |
d521ce57 | 6920 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6921 | struct objfile *objfile) |
6922 | { | |
6923 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6924 | ||
fbd9ab74 JK |
6925 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6926 | { | |
6927 | /* It shares objfile->objfile_obstack. */ | |
6928 | subpst->dirname = pst->dirname; | |
6929 | } | |
6930 | ||
aaa75496 JB |
6931 | subpst->textlow = 0; |
6932 | subpst->texthigh = 0; | |
6933 | ||
8d749320 SM |
6934 | subpst->dependencies |
6935 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6936 | subpst->dependencies[0] = pst; |
6937 | subpst->number_of_dependencies = 1; | |
6938 | ||
6939 | subpst->globals_offset = 0; | |
6940 | subpst->n_global_syms = 0; | |
6941 | subpst->statics_offset = 0; | |
6942 | subpst->n_static_syms = 0; | |
43f3e411 | 6943 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6944 | subpst->read_symtab = pst->read_symtab; |
6945 | subpst->readin = 0; | |
6946 | ||
6947 | /* No private part is necessary for include psymtabs. This property | |
6948 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6949 | the regular ones. */ |
58a9656e | 6950 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6951 | } |
6952 | ||
6953 | /* Read the Line Number Program data and extract the list of files | |
6954 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6955 | partial symtab for each of these included files. */ |
aaa75496 JB |
6956 | |
6957 | static void | |
6958 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6959 | struct die_info *die, |
6960 | struct partial_symtab *pst) | |
aaa75496 | 6961 | { |
fff8551c | 6962 | line_header_up lh; |
d85a05f0 | 6963 | struct attribute *attr; |
aaa75496 | 6964 | |
d85a05f0 DJ |
6965 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6966 | if (attr) | |
9c541725 | 6967 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6968 | if (lh == NULL) |
6969 | return; /* No linetable, so no includes. */ | |
6970 | ||
c6da4cef | 6971 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 6972 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
6973 | } |
6974 | ||
348e048f | 6975 | static hashval_t |
52dc124a | 6976 | hash_signatured_type (const void *item) |
348e048f | 6977 | { |
9a3c8263 SM |
6978 | const struct signatured_type *sig_type |
6979 | = (const struct signatured_type *) item; | |
9a619af0 | 6980 | |
348e048f | 6981 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6982 | return sig_type->signature; |
348e048f DE |
6983 | } |
6984 | ||
6985 | static int | |
52dc124a | 6986 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6987 | { |
9a3c8263 SM |
6988 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6989 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6990 | |
348e048f DE |
6991 | return lhs->signature == rhs->signature; |
6992 | } | |
6993 | ||
1fd400ff TT |
6994 | /* Allocate a hash table for signatured types. */ |
6995 | ||
6996 | static htab_t | |
673bfd45 | 6997 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6998 | { |
6999 | return htab_create_alloc_ex (41, | |
52dc124a DE |
7000 | hash_signatured_type, |
7001 | eq_signatured_type, | |
1fd400ff TT |
7002 | NULL, |
7003 | &objfile->objfile_obstack, | |
7004 | hashtab_obstack_allocate, | |
7005 | dummy_obstack_deallocate); | |
7006 | } | |
7007 | ||
d467dd73 | 7008 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
7009 | |
7010 | static int | |
d467dd73 | 7011 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 7012 | { |
9a3c8263 SM |
7013 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
7014 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 7015 | |
b4dd5633 | 7016 | **datap = sigt; |
1fd400ff TT |
7017 | ++*datap; |
7018 | ||
7019 | return 1; | |
7020 | } | |
7021 | ||
78d4d2c5 | 7022 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
7023 | and fill them into TYPES_HTAB. It will process only type units, |
7024 | therefore DW_UT_type. */ | |
c88ee1f0 | 7025 | |
78d4d2c5 | 7026 | static void |
ed2dc618 SM |
7027 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7028 | struct dwo_file *dwo_file, | |
43988095 JK |
7029 | dwarf2_section_info *section, htab_t &types_htab, |
7030 | rcuh_kind section_kind) | |
348e048f | 7031 | { |
3019eac3 | 7032 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 7033 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
7034 | bfd *abfd; |
7035 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 7036 | |
4bdcc0c1 DE |
7037 | abbrev_section = (dwo_file != NULL |
7038 | ? &dwo_file->sections.abbrev | |
7039 | : &dwarf2_per_objfile->abbrev); | |
7040 | ||
b4f54984 | 7041 | if (dwarf_read_debug) |
43988095 JK |
7042 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
7043 | get_section_name (section), | |
a32a8923 | 7044 | get_section_file_name (abbrev_section)); |
09406207 | 7045 | |
78d4d2c5 JK |
7046 | dwarf2_read_section (objfile, section); |
7047 | info_ptr = section->buffer; | |
348e048f | 7048 | |
78d4d2c5 JK |
7049 | if (info_ptr == NULL) |
7050 | return; | |
348e048f | 7051 | |
78d4d2c5 JK |
7052 | /* We can't set abfd until now because the section may be empty or |
7053 | not present, in which case the bfd is unknown. */ | |
7054 | abfd = get_section_bfd_owner (section); | |
348e048f | 7055 | |
78d4d2c5 JK |
7056 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
7057 | because we don't need to read any dies: the signature is in the | |
7058 | header. */ | |
3019eac3 | 7059 | |
78d4d2c5 JK |
7060 | end_ptr = info_ptr + section->size; |
7061 | while (info_ptr < end_ptr) | |
7062 | { | |
78d4d2c5 JK |
7063 | struct signatured_type *sig_type; |
7064 | struct dwo_unit *dwo_tu; | |
7065 | void **slot; | |
7066 | const gdb_byte *ptr = info_ptr; | |
7067 | struct comp_unit_head header; | |
7068 | unsigned int length; | |
8b70b953 | 7069 | |
9c541725 | 7070 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 7071 | |
a49dd8dd JK |
7072 | /* Initialize it due to a false compiler warning. */ |
7073 | header.signature = -1; | |
9c541725 | 7074 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 7075 | |
78d4d2c5 JK |
7076 | /* We need to read the type's signature in order to build the hash |
7077 | table, but we don't need anything else just yet. */ | |
348e048f | 7078 | |
ed2dc618 | 7079 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 7080 | abbrev_section, ptr, section_kind); |
348e048f | 7081 | |
78d4d2c5 | 7082 | length = get_cu_length (&header); |
6caca83c | 7083 | |
78d4d2c5 JK |
7084 | /* Skip dummy type units. */ |
7085 | if (ptr >= info_ptr + length | |
43988095 JK |
7086 | || peek_abbrev_code (abfd, ptr) == 0 |
7087 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
7088 | { |
7089 | info_ptr += length; | |
7090 | continue; | |
7091 | } | |
dee91e82 | 7092 | |
78d4d2c5 JK |
7093 | if (types_htab == NULL) |
7094 | { | |
7095 | if (dwo_file) | |
7096 | types_htab = allocate_dwo_unit_table (objfile); | |
7097 | else | |
7098 | types_htab = allocate_signatured_type_table (objfile); | |
7099 | } | |
8b70b953 | 7100 | |
78d4d2c5 JK |
7101 | if (dwo_file) |
7102 | { | |
7103 | sig_type = NULL; | |
7104 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7105 | struct dwo_unit); | |
7106 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 7107 | dwo_tu->signature = header.signature; |
9c541725 | 7108 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 7109 | dwo_tu->section = section; |
9c541725 | 7110 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
7111 | dwo_tu->length = length; |
7112 | } | |
7113 | else | |
7114 | { | |
7115 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
7116 | The real type_offset is in the DWO file. */ | |
7117 | dwo_tu = NULL; | |
7118 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7119 | struct signatured_type); | |
43988095 | 7120 | sig_type->signature = header.signature; |
9c541725 | 7121 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 7122 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
7123 | sig_type->per_cu.is_debug_types = 1; |
7124 | sig_type->per_cu.section = section; | |
9c541725 | 7125 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
7126 | sig_type->per_cu.length = length; |
7127 | } | |
7128 | ||
7129 | slot = htab_find_slot (types_htab, | |
7130 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
7131 | INSERT); | |
7132 | gdb_assert (slot != NULL); | |
7133 | if (*slot != NULL) | |
7134 | { | |
9c541725 | 7135 | sect_offset dup_sect_off; |
0349ea22 | 7136 | |
3019eac3 DE |
7137 | if (dwo_file) |
7138 | { | |
78d4d2c5 JK |
7139 | const struct dwo_unit *dup_tu |
7140 | = (const struct dwo_unit *) *slot; | |
7141 | ||
9c541725 | 7142 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
7143 | } |
7144 | else | |
7145 | { | |
78d4d2c5 JK |
7146 | const struct signatured_type *dup_tu |
7147 | = (const struct signatured_type *) *slot; | |
7148 | ||
9c541725 | 7149 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 7150 | } |
8b70b953 | 7151 | |
78d4d2c5 JK |
7152 | complaint (&symfile_complaints, |
7153 | _("debug type entry at offset 0x%x is duplicate to" | |
7154 | " the entry at offset 0x%x, signature %s"), | |
9c541725 | 7155 | to_underlying (sect_off), to_underlying (dup_sect_off), |
43988095 | 7156 | hex_string (header.signature)); |
78d4d2c5 JK |
7157 | } |
7158 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 7159 | |
78d4d2c5 JK |
7160 | if (dwarf_read_debug > 1) |
7161 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", | |
9c541725 | 7162 | to_underlying (sect_off), |
43988095 | 7163 | hex_string (header.signature)); |
3019eac3 | 7164 | |
78d4d2c5 JK |
7165 | info_ptr += length; |
7166 | } | |
7167 | } | |
3019eac3 | 7168 | |
78d4d2c5 JK |
7169 | /* Create the hash table of all entries in the .debug_types |
7170 | (or .debug_types.dwo) section(s). | |
7171 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
7172 | otherwise it is NULL. | |
b3c8eb43 | 7173 | |
78d4d2c5 | 7174 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 7175 | |
78d4d2c5 | 7176 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 7177 | |
78d4d2c5 | 7178 | static void |
ed2dc618 SM |
7179 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7180 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
7181 | VEC (dwarf2_section_info_def) *types, |
7182 | htab_t &types_htab) | |
7183 | { | |
7184 | int ix; | |
7185 | struct dwarf2_section_info *section; | |
7186 | ||
7187 | if (VEC_empty (dwarf2_section_info_def, types)) | |
7188 | return; | |
348e048f | 7189 | |
78d4d2c5 JK |
7190 | for (ix = 0; |
7191 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
7192 | ++ix) | |
ed2dc618 SM |
7193 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
7194 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
7195 | } |
7196 | ||
7197 | /* Create the hash table of all entries in the .debug_types section, | |
7198 | and initialize all_type_units. | |
7199 | The result is zero if there is an error (e.g. missing .debug_types section), | |
7200 | otherwise non-zero. */ | |
7201 | ||
7202 | static int | |
ed2dc618 | 7203 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 7204 | { |
78d4d2c5 | 7205 | htab_t types_htab = NULL; |
b4dd5633 | 7206 | struct signatured_type **iter; |
3019eac3 | 7207 | |
ed2dc618 SM |
7208 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
7209 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 7210 | rcuh_kind::COMPILE); |
ed2dc618 SM |
7211 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
7212 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
7213 | if (types_htab == NULL) |
7214 | { | |
7215 | dwarf2_per_objfile->signatured_types = NULL; | |
7216 | return 0; | |
7217 | } | |
7218 | ||
348e048f DE |
7219 | dwarf2_per_objfile->signatured_types = types_htab; |
7220 | ||
6aa5f3a6 DE |
7221 | dwarf2_per_objfile->n_type_units |
7222 | = dwarf2_per_objfile->n_allocated_type_units | |
7223 | = htab_elements (types_htab); | |
8d749320 SM |
7224 | dwarf2_per_objfile->all_type_units = |
7225 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
7226 | iter = &dwarf2_per_objfile->all_type_units[0]; |
7227 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
7228 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
7229 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 7230 | |
348e048f DE |
7231 | return 1; |
7232 | } | |
7233 | ||
6aa5f3a6 DE |
7234 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
7235 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
7236 | Otherwise we find one. */ | |
7237 | ||
7238 | static struct signatured_type * | |
ed2dc618 SM |
7239 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
7240 | void **slot) | |
6aa5f3a6 DE |
7241 | { |
7242 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7243 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
7244 | struct signatured_type *sig_type; | |
7245 | ||
7246 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
7247 | ++n_type_units; | |
7248 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
7249 | { | |
7250 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
7251 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
7252 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
7253 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
7254 | = XRESIZEVEC (struct signatured_type *, |
7255 | dwarf2_per_objfile->all_type_units, | |
7256 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
7257 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
7258 | } | |
7259 | dwarf2_per_objfile->n_type_units = n_type_units; | |
7260 | ||
7261 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7262 | struct signatured_type); | |
7263 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
7264 | sig_type->signature = sig; | |
7265 | sig_type->per_cu.is_debug_types = 1; | |
7266 | if (dwarf2_per_objfile->using_index) | |
7267 | { | |
7268 | sig_type->per_cu.v.quick = | |
7269 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7270 | struct dwarf2_per_cu_quick_data); | |
7271 | } | |
7272 | ||
7273 | if (slot == NULL) | |
7274 | { | |
7275 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7276 | sig_type, INSERT); | |
7277 | } | |
7278 | gdb_assert (*slot == NULL); | |
7279 | *slot = sig_type; | |
7280 | /* The rest of sig_type must be filled in by the caller. */ | |
7281 | return sig_type; | |
7282 | } | |
7283 | ||
a2ce51a0 DE |
7284 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
7285 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
7286 | ||
7287 | static void | |
ed2dc618 | 7288 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
7289 | struct signatured_type *sig_entry, |
7290 | struct dwo_unit *dwo_entry) | |
7291 | { | |
7ee85ab1 | 7292 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
7293 | gdb_assert (! sig_entry->per_cu.queued); |
7294 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
7295 | if (dwarf2_per_objfile->using_index) |
7296 | { | |
7297 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 7298 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
7299 | } |
7300 | else | |
7301 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 7302 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 7303 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 7304 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
7305 | gdb_assert (sig_entry->dwo_unit == NULL); |
7306 | ||
7307 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 7308 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
7309 | sig_entry->per_cu.length = dwo_entry->length; |
7310 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 7311 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
7312 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
7313 | sig_entry->dwo_unit = dwo_entry; | |
7314 | } | |
7315 | ||
7316 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
7317 | If we haven't read the TU yet, create the signatured_type data structure |
7318 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
7319 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
7320 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
7321 | containing that CU. Otherwise we could end up reading several other DWO | |
7322 | files (due to comdat folding) to process the transitive closure of all the | |
7323 | mentioned TUs, and that can be slow. The current DWO file will have every | |
7324 | type signature that it needs. | |
a2ce51a0 DE |
7325 | We only do this for .gdb_index because in the psymtab case we already have |
7326 | to read all the DWOs to build the type unit groups. */ | |
7327 | ||
7328 | static struct signatured_type * | |
7329 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7330 | { | |
518817b3 SM |
7331 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7332 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
7333 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7334 | struct dwo_file *dwo_file; | |
7335 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
7336 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7337 | void **slot; |
a2ce51a0 DE |
7338 | |
7339 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7340 | ||
6aa5f3a6 DE |
7341 | /* If TU skeletons have been removed then we may not have read in any |
7342 | TUs yet. */ | |
7343 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7344 | { | |
7345 | dwarf2_per_objfile->signatured_types | |
7346 | = allocate_signatured_type_table (objfile); | |
7347 | } | |
a2ce51a0 DE |
7348 | |
7349 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7350 | Use the global signatured_types array to do our own comdat-folding |
7351 | of types. If this is the first time we're reading this TU, and | |
7352 | the TU has an entry in .gdb_index, replace the recorded data from | |
7353 | .gdb_index with this TU. */ | |
a2ce51a0 | 7354 | |
a2ce51a0 | 7355 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7356 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7357 | &find_sig_entry, INSERT); | |
9a3c8263 | 7358 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7359 | |
7360 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7361 | read. Don't reassign the global entry to point to this DWO if that's |
7362 | the case. Also note that if the TU is already being read, it may not | |
7363 | have come from a DWO, the program may be a mix of Fission-compiled | |
7364 | code and non-Fission-compiled code. */ | |
7365 | ||
7366 | /* Have we already tried to read this TU? | |
7367 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7368 | needn't exist in the global table yet). */ | |
7369 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7370 | return sig_entry; |
7371 | ||
6aa5f3a6 DE |
7372 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7373 | dwo_unit of the TU itself. */ | |
7374 | dwo_file = cu->dwo_unit->dwo_file; | |
7375 | ||
a2ce51a0 DE |
7376 | /* Ok, this is the first time we're reading this TU. */ |
7377 | if (dwo_file->tus == NULL) | |
7378 | return NULL; | |
7379 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7380 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7381 | if (dwo_entry == NULL) |
7382 | return NULL; | |
7383 | ||
6aa5f3a6 DE |
7384 | /* If the global table doesn't have an entry for this TU, add one. */ |
7385 | if (sig_entry == NULL) | |
ed2dc618 | 7386 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7387 | |
ed2dc618 | 7388 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7389 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7390 | return sig_entry; |
7391 | } | |
7392 | ||
a2ce51a0 DE |
7393 | /* Subroutine of lookup_signatured_type. |
7394 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7395 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7396 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7397 | |
7398 | static struct signatured_type * | |
7399 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7400 | { | |
518817b3 SM |
7401 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7402 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7403 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7404 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7405 | struct dwo_unit *dwo_entry; |
7406 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7407 | void **slot; |
a2ce51a0 DE |
7408 | |
7409 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7410 | gdb_assert (dwp_file != NULL); | |
7411 | ||
6aa5f3a6 DE |
7412 | /* If TU skeletons have been removed then we may not have read in any |
7413 | TUs yet. */ | |
7414 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7415 | { |
6aa5f3a6 DE |
7416 | dwarf2_per_objfile->signatured_types |
7417 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7418 | } |
7419 | ||
6aa5f3a6 DE |
7420 | find_sig_entry.signature = sig; |
7421 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7422 | &find_sig_entry, INSERT); | |
9a3c8263 | 7423 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7424 | |
7425 | /* Have we already tried to read this TU? | |
7426 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7427 | needn't exist in the global table yet). */ | |
7428 | if (sig_entry != NULL) | |
7429 | return sig_entry; | |
7430 | ||
a2ce51a0 DE |
7431 | if (dwp_file->tus == NULL) |
7432 | return NULL; | |
ed2dc618 | 7433 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7434 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7435 | if (dwo_entry == NULL) |
7436 | return NULL; | |
7437 | ||
ed2dc618 SM |
7438 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7439 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7440 | |
a2ce51a0 DE |
7441 | return sig_entry; |
7442 | } | |
7443 | ||
380bca97 | 7444 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7445 | Returns NULL if signature SIG is not present in the table. |
7446 | It is up to the caller to complain about this. */ | |
348e048f DE |
7447 | |
7448 | static struct signatured_type * | |
a2ce51a0 | 7449 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7450 | { |
518817b3 SM |
7451 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7452 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7453 | |
a2ce51a0 DE |
7454 | if (cu->dwo_unit |
7455 | && dwarf2_per_objfile->using_index) | |
7456 | { | |
7457 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7458 | These cases require special processing. */ | |
ed2dc618 | 7459 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7460 | return lookup_dwo_signatured_type (cu, sig); |
7461 | else | |
7462 | return lookup_dwp_signatured_type (cu, sig); | |
7463 | } | |
7464 | else | |
7465 | { | |
7466 | struct signatured_type find_entry, *entry; | |
348e048f | 7467 | |
a2ce51a0 DE |
7468 | if (dwarf2_per_objfile->signatured_types == NULL) |
7469 | return NULL; | |
7470 | find_entry.signature = sig; | |
9a3c8263 SM |
7471 | entry = ((struct signatured_type *) |
7472 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7473 | return entry; |
7474 | } | |
348e048f | 7475 | } |
42e7ad6c DE |
7476 | \f |
7477 | /* Low level DIE reading support. */ | |
348e048f | 7478 | |
d85a05f0 DJ |
7479 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7480 | ||
7481 | static void | |
7482 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7483 | struct dwarf2_cu *cu, |
3019eac3 | 7484 | struct dwarf2_section_info *section, |
685af9cd TT |
7485 | struct dwo_file *dwo_file, |
7486 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7487 | { |
fceca515 | 7488 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7489 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7490 | reader->cu = cu; |
3019eac3 | 7491 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7492 | reader->die_section = section; |
7493 | reader->buffer = section->buffer; | |
f664829e | 7494 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7495 | reader->comp_dir = NULL; |
685af9cd | 7496 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7497 | } |
7498 | ||
b0c7bfa9 DE |
7499 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7500 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7501 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7502 | already. | |
7503 | ||
7504 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7505 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7506 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7507 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7508 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7509 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7510 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7511 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7512 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7513 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7514 | kept around for at least as long as *RESULT_READER. | |
7515 | ||
b0c7bfa9 DE |
7516 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7517 | ||
7518 | static int | |
7519 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7520 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7521 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7522 | const char *stub_comp_dir, |
b0c7bfa9 | 7523 | struct die_reader_specs *result_reader, |
d521ce57 | 7524 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7525 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7526 | int *result_has_children, |
7527 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7528 | { |
ed2dc618 | 7529 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7530 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7531 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7532 | bfd *abfd; |
d521ce57 | 7533 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7534 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7535 | int i,num_extra_attrs; | |
7536 | struct dwarf2_section_info *dwo_abbrev_section; | |
7537 | struct attribute *attr; | |
7538 | struct die_info *comp_unit_die; | |
7539 | ||
b0aeadb3 DE |
7540 | /* At most one of these may be provided. */ |
7541 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7542 | |
b0c7bfa9 DE |
7543 | /* These attributes aren't processed until later: |
7544 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7545 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7546 | referenced later. However, these attributes are found in the stub | |
7547 | which we won't have later. In order to not impose this complication | |
7548 | on the rest of the code, we read them here and copy them to the | |
7549 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7550 | |
7551 | stmt_list = NULL; | |
7552 | low_pc = NULL; | |
7553 | high_pc = NULL; | |
7554 | ranges = NULL; | |
7555 | comp_dir = NULL; | |
7556 | ||
7557 | if (stub_comp_unit_die != NULL) | |
7558 | { | |
7559 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7560 | DWO file. */ | |
7561 | if (! this_cu->is_debug_types) | |
7562 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7563 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7564 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7565 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7566 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7567 | ||
7568 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7569 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7570 | cu->addr_base = 0; | |
7571 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7572 | if (attr) | |
7573 | cu->addr_base = DW_UNSND (attr); | |
7574 | ||
7575 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7576 | We need the value before we can process DW_AT_ranges. */ | |
7577 | cu->ranges_base = 0; | |
7578 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7579 | if (attr) | |
7580 | cu->ranges_base = DW_UNSND (attr); | |
7581 | } | |
a2ce51a0 DE |
7582 | else if (stub_comp_dir != NULL) |
7583 | { | |
7584 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7585 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7586 | comp_dir->name = DW_AT_comp_dir; |
7587 | comp_dir->form = DW_FORM_string; | |
7588 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7589 | DW_STRING (comp_dir) = stub_comp_dir; | |
7590 | } | |
b0c7bfa9 DE |
7591 | |
7592 | /* Set up for reading the DWO CU/TU. */ | |
7593 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7594 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7595 | dwarf2_read_section (objfile, section); |
a32a8923 | 7596 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7597 | begin_info_ptr = info_ptr = (section->buffer |
7598 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7599 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7600 | |
7601 | if (this_cu->is_debug_types) | |
7602 | { | |
b0c7bfa9 DE |
7603 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7604 | ||
ed2dc618 SM |
7605 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7606 | &cu->header, section, | |
b0c7bfa9 | 7607 | dwo_abbrev_section, |
43988095 | 7608 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7609 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7610 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7611 | { |
7612 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
7613 | " TU at offset 0x%x [in module %s]"), | |
7614 | hex_string (sig_type->signature), | |
43988095 | 7615 | hex_string (cu->header.signature), |
9c541725 | 7616 | to_underlying (dwo_unit->sect_off), |
a2ce51a0 DE |
7617 | bfd_get_filename (abfd)); |
7618 | } | |
9c541725 | 7619 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7620 | /* For DWOs coming from DWP files, we don't know the CU length |
7621 | nor the type's offset in the TU until now. */ | |
7622 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7623 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7624 | |
7625 | /* Establish the type offset that can be used to lookup the type. | |
7626 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7627 | sig_type->type_offset_in_section |
7628 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7629 | } |
7630 | else | |
7631 | { | |
ed2dc618 SM |
7632 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7633 | &cu->header, section, | |
b0c7bfa9 | 7634 | dwo_abbrev_section, |
43988095 | 7635 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7636 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7637 | /* For DWOs coming from DWP files, we don't know the CU length |
7638 | until now. */ | |
7639 | dwo_unit->length = get_cu_length (&cu->header); | |
7640 | } | |
7641 | ||
685af9cd TT |
7642 | *result_dwo_abbrev_table |
7643 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7644 | cu->header.abbrev_sect_off); | |
7645 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7646 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7647 | |
7648 | /* Read in the die, but leave space to copy over the attributes | |
7649 | from the stub. This has the benefit of simplifying the rest of | |
7650 | the code - all the work to maintain the illusion of a single | |
7651 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7652 | num_extra_attrs = ((stmt_list != NULL) | |
7653 | + (low_pc != NULL) | |
7654 | + (high_pc != NULL) | |
7655 | + (ranges != NULL) | |
7656 | + (comp_dir != NULL)); | |
7657 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7658 | result_has_children, num_extra_attrs); | |
7659 | ||
7660 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7661 | comp_unit_die = *result_comp_unit_die; | |
7662 | i = comp_unit_die->num_attrs; | |
7663 | if (stmt_list != NULL) | |
7664 | comp_unit_die->attrs[i++] = *stmt_list; | |
7665 | if (low_pc != NULL) | |
7666 | comp_unit_die->attrs[i++] = *low_pc; | |
7667 | if (high_pc != NULL) | |
7668 | comp_unit_die->attrs[i++] = *high_pc; | |
7669 | if (ranges != NULL) | |
7670 | comp_unit_die->attrs[i++] = *ranges; | |
7671 | if (comp_dir != NULL) | |
7672 | comp_unit_die->attrs[i++] = *comp_dir; | |
7673 | comp_unit_die->num_attrs += num_extra_attrs; | |
7674 | ||
b4f54984 | 7675 | if (dwarf_die_debug) |
bf6af496 DE |
7676 | { |
7677 | fprintf_unfiltered (gdb_stdlog, | |
7678 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7679 | get_section_name (section), |
bf6af496 DE |
7680 | (unsigned) (begin_info_ptr - section->buffer), |
7681 | bfd_get_filename (abfd)); | |
b4f54984 | 7682 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7683 | } |
7684 | ||
a2ce51a0 DE |
7685 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7686 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7687 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7688 | to get it via circuitous means. Blech. */ | |
7689 | if (comp_dir != NULL) | |
7690 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7691 | ||
b0c7bfa9 DE |
7692 | /* Skip dummy compilation units. */ |
7693 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7694 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7695 | return 0; | |
7696 | ||
7697 | *result_info_ptr = info_ptr; | |
7698 | return 1; | |
7699 | } | |
7700 | ||
7701 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7702 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7703 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7704 | |
7705 | static struct dwo_unit * | |
7706 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7707 | struct die_info *comp_unit_die) | |
7708 | { | |
7709 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7710 | ULONGEST signature; |
7711 | struct dwo_unit *dwo_unit; | |
7712 | const char *comp_dir, *dwo_name; | |
7713 | ||
a2ce51a0 DE |
7714 | gdb_assert (cu != NULL); |
7715 | ||
b0c7bfa9 | 7716 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7717 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7718 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7719 | |
7720 | if (this_cu->is_debug_types) | |
7721 | { | |
7722 | struct signatured_type *sig_type; | |
7723 | ||
7724 | /* Since this_cu is the first member of struct signatured_type, | |
7725 | we can go from a pointer to one to a pointer to the other. */ | |
7726 | sig_type = (struct signatured_type *) this_cu; | |
7727 | signature = sig_type->signature; | |
7728 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7729 | } | |
7730 | else | |
7731 | { | |
7732 | struct attribute *attr; | |
7733 | ||
7734 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7735 | if (! attr) | |
7736 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7737 | " [in module %s]"), | |
e3b94546 | 7738 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7739 | signature = DW_UNSND (attr); |
7740 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7741 | signature); | |
7742 | } | |
7743 | ||
b0c7bfa9 DE |
7744 | return dwo_unit; |
7745 | } | |
7746 | ||
a2ce51a0 | 7747 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7748 | See it for a description of the parameters. |
fcd3b13d | 7749 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7750 | |
7751 | static void | |
6aa5f3a6 DE |
7752 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7753 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7754 | die_reader_func_ftype *die_reader_func, |
7755 | void *data) | |
7756 | { | |
fcd3b13d | 7757 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7758 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7759 | struct die_reader_specs reader; |
7760 | const gdb_byte *info_ptr; | |
7761 | struct die_info *comp_unit_die; | |
7762 | int has_children; | |
ed2dc618 | 7763 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7764 | |
7765 | /* Verify we can do the following downcast, and that we have the | |
7766 | data we need. */ | |
7767 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7768 | sig_type = (struct signatured_type *) this_cu; | |
7769 | gdb_assert (sig_type->dwo_unit != NULL); | |
7770 | ||
6aa5f3a6 DE |
7771 | if (use_existing_cu && this_cu->cu != NULL) |
7772 | { | |
7773 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7774 | /* There's no need to do the rereading_dwo_cu handling that |
7775 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7776 | } | |
7777 | else | |
7778 | { | |
7779 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7780 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7781 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7782 | } |
7783 | ||
7784 | /* A future optimization, if needed, would be to use an existing | |
7785 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7786 | could share abbrev tables. */ | |
a2ce51a0 | 7787 | |
685af9cd TT |
7788 | /* The abbreviation table used by READER, this must live at least as long as |
7789 | READER. */ | |
7790 | abbrev_table_up dwo_abbrev_table; | |
7791 | ||
a2ce51a0 | 7792 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7793 | NULL /* stub_comp_unit_die */, |
7794 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7795 | &reader, &info_ptr, | |
685af9cd TT |
7796 | &comp_unit_die, &has_children, |
7797 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7798 | { |
7799 | /* Dummy die. */ | |
a2ce51a0 DE |
7800 | return; |
7801 | } | |
7802 | ||
7803 | /* All the "real" work is done here. */ | |
7804 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7805 | ||
6aa5f3a6 | 7806 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7807 | but the alternative is making the latter more complex. |
7808 | This function is only for the special case of using DWO files directly: | |
7809 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7810 | if (new_cu != NULL && keep) |
a2ce51a0 | 7811 | { |
fcd3b13d SM |
7812 | /* Link this CU into read_in_chain. */ |
7813 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7814 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7815 | /* The chain owns it now. */ | |
7816 | new_cu.release (); | |
a2ce51a0 | 7817 | } |
a2ce51a0 DE |
7818 | } |
7819 | ||
fd820528 | 7820 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7821 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7822 | |
f4dc4d17 DE |
7823 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7824 | Otherwise the table specified in the comp unit header is read in and used. | |
7825 | This is an optimization for when we already have the abbrev table. | |
7826 | ||
dee91e82 DE |
7827 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7828 | Otherwise, a new CU is allocated with xmalloc. | |
7829 | ||
7830 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7831 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7832 | ||
7833 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7834 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7835 | |
70221824 | 7836 | static void |
fd820528 | 7837 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7838 | struct abbrev_table *abbrev_table, |
fd820528 DE |
7839 | int use_existing_cu, int keep, |
7840 | die_reader_func_ftype *die_reader_func, | |
7841 | void *data) | |
c906108c | 7842 | { |
ed2dc618 | 7843 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7844 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7845 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7846 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7847 | struct dwarf2_cu *cu; |
d521ce57 | 7848 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7849 | struct die_reader_specs reader; |
d85a05f0 | 7850 | struct die_info *comp_unit_die; |
dee91e82 | 7851 | int has_children; |
d85a05f0 | 7852 | struct attribute *attr; |
dee91e82 | 7853 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7854 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7855 | /* Non-zero if CU currently points to a DWO file and we need to |
7856 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7857 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7858 | int rereading_dwo_cu = 0; |
c906108c | 7859 | |
b4f54984 | 7860 | if (dwarf_die_debug) |
09406207 DE |
7861 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
7862 | this_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 7863 | to_underlying (this_cu->sect_off)); |
09406207 | 7864 | |
dee91e82 DE |
7865 | if (use_existing_cu) |
7866 | gdb_assert (keep); | |
23745b47 | 7867 | |
a2ce51a0 DE |
7868 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7869 | file (instead of going through the stub), short-circuit all of this. */ | |
7870 | if (this_cu->reading_dwo_directly) | |
7871 | { | |
7872 | /* Narrow down the scope of possibilities to have to understand. */ | |
7873 | gdb_assert (this_cu->is_debug_types); | |
7874 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7875 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7876 | die_reader_func, data); | |
a2ce51a0 DE |
7877 | return; |
7878 | } | |
7879 | ||
dee91e82 DE |
7880 | /* This is cheap if the section is already read in. */ |
7881 | dwarf2_read_section (objfile, section); | |
7882 | ||
9c541725 | 7883 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7884 | |
7885 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7886 | |
fcd3b13d | 7887 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7888 | if (use_existing_cu && this_cu->cu != NULL) |
7889 | { | |
7890 | cu = this_cu->cu; | |
42e7ad6c DE |
7891 | /* If this CU is from a DWO file we need to start over, we need to |
7892 | refetch the attributes from the skeleton CU. | |
7893 | This could be optimized by retrieving those attributes from when we | |
7894 | were here the first time: the previous comp_unit_die was stored in | |
7895 | comp_unit_obstack. But there's no data yet that we need this | |
7896 | optimization. */ | |
7897 | if (cu->dwo_unit != NULL) | |
7898 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7899 | } |
7900 | else | |
7901 | { | |
7902 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7903 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7904 | new_cu.reset (new dwarf2_cu (this_cu)); |
7905 | cu = new_cu.get (); | |
42e7ad6c | 7906 | } |
dee91e82 | 7907 | |
b0c7bfa9 | 7908 | /* Get the header. */ |
9c541725 | 7909 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7910 | { |
7911 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7912 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7913 | } |
7914 | else | |
7915 | { | |
3019eac3 | 7916 | if (this_cu->is_debug_types) |
dee91e82 | 7917 | { |
ed2dc618 SM |
7918 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7919 | &cu->header, section, | |
4bdcc0c1 | 7920 | abbrev_section, info_ptr, |
43988095 | 7921 | rcuh_kind::TYPE); |
dee91e82 | 7922 | |
42e7ad6c DE |
7923 | /* Since per_cu is the first member of struct signatured_type, |
7924 | we can go from a pointer to one to a pointer to the other. */ | |
7925 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7926 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7927 | gdb_assert (sig_type->type_offset_in_tu |
7928 | == cu->header.type_cu_offset_in_tu); | |
7929 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7930 | |
42e7ad6c DE |
7931 | /* LENGTH has not been set yet for type units if we're |
7932 | using .gdb_index. */ | |
1ce1cefd | 7933 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7934 | |
7935 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7936 | sig_type->type_offset_in_section = |
7937 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7938 | |
7939 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7940 | } |
7941 | else | |
7942 | { | |
ed2dc618 SM |
7943 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7944 | &cu->header, section, | |
4bdcc0c1 | 7945 | abbrev_section, |
43988095 JK |
7946 | info_ptr, |
7947 | rcuh_kind::COMPILE); | |
dee91e82 | 7948 | |
9c541725 | 7949 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7950 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7951 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7952 | } |
7953 | } | |
10b3939b | 7954 | |
6caca83c | 7955 | /* Skip dummy compilation units. */ |
dee91e82 | 7956 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7957 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7958 | return; |
6caca83c | 7959 | |
433df2d4 DE |
7960 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7961 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7962 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7963 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7964 | if (abbrev_table != NULL) |
685af9cd TT |
7965 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7966 | else | |
f4dc4d17 | 7967 | { |
685af9cd TT |
7968 | abbrev_table_holder |
7969 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7970 | cu->header.abbrev_sect_off); | |
7971 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7972 | } |
af703f96 | 7973 | |
dee91e82 | 7974 | /* Read the top level CU/TU die. */ |
685af9cd | 7975 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7976 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7977 | |
b0c7bfa9 | 7978 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7979 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7980 | table from the DWO file and pass the ownership over to us. It will be | |
7981 | referenced from READER, so we must make sure to free it after we're done | |
7982 | with READER. | |
7983 | ||
b0c7bfa9 DE |
7984 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7985 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7986 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7987 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7988 | if (attr) |
7989 | { | |
3019eac3 | 7990 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7991 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7992 | |
7993 | if (has_children) | |
6a506a2d DE |
7994 | { |
7995 | complaint (&symfile_complaints, | |
7996 | _("compilation unit with DW_AT_GNU_dwo_name" | |
7997 | " has children (offset 0x%x) [in module %s]"), | |
9c541725 | 7998 | to_underlying (this_cu->sect_off), bfd_get_filename (abfd)); |
6a506a2d | 7999 | } |
b0c7bfa9 | 8000 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 8001 | if (dwo_unit != NULL) |
3019eac3 | 8002 | { |
6a506a2d | 8003 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 8004 | comp_unit_die, NULL, |
6a506a2d | 8005 | &reader, &info_ptr, |
685af9cd TT |
8006 | &dwo_comp_unit_die, &has_children, |
8007 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
8008 | { |
8009 | /* Dummy die. */ | |
6a506a2d DE |
8010 | return; |
8011 | } | |
8012 | comp_unit_die = dwo_comp_unit_die; | |
8013 | } | |
8014 | else | |
8015 | { | |
8016 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
8017 | the stub. A complaint has already been logged. There's | |
8018 | not much more we can do except pass on the stub DIE to | |
8019 | die_reader_func. We don't want to throw an error on bad | |
8020 | debug info. */ | |
3019eac3 DE |
8021 | } |
8022 | } | |
8023 | ||
b0c7bfa9 | 8024 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
8025 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
8026 | ||
b0c7bfa9 | 8027 | /* Done, clean up. */ |
fcd3b13d | 8028 | if (new_cu != NULL && keep) |
348e048f | 8029 | { |
fcd3b13d SM |
8030 | /* Link this CU into read_in_chain. */ |
8031 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
8032 | dwarf2_per_objfile->read_in_chain = this_cu; | |
8033 | /* The chain owns it now. */ | |
8034 | new_cu.release (); | |
348e048f | 8035 | } |
dee91e82 DE |
8036 | } |
8037 | ||
33e80786 DE |
8038 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
8039 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
8040 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
8041 | |
8042 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 8043 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
8044 | |
8045 | We fill in THIS_CU->length. | |
8046 | ||
8047 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
8048 | linker) then DIE_READER_FUNC will not get called. | |
8049 | ||
8050 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
8051 | This is done in order to not leave THIS_CU->cu in a state where we have |
8052 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
8053 | |
8054 | static void | |
8055 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 8056 | struct dwo_file *dwo_file, |
dee91e82 DE |
8057 | die_reader_func_ftype *die_reader_func, |
8058 | void *data) | |
8059 | { | |
ed2dc618 | 8060 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 8061 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 8062 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 8063 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 8064 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 8065 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 8066 | struct die_reader_specs reader; |
dee91e82 DE |
8067 | struct die_info *comp_unit_die; |
8068 | int has_children; | |
8069 | ||
b4f54984 | 8070 | if (dwarf_die_debug) |
09406207 DE |
8071 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
8072 | this_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 8073 | to_underlying (this_cu->sect_off)); |
09406207 | 8074 | |
dee91e82 DE |
8075 | gdb_assert (this_cu->cu == NULL); |
8076 | ||
33e80786 DE |
8077 | abbrev_section = (dwo_file != NULL |
8078 | ? &dwo_file->sections.abbrev | |
8079 | : get_abbrev_section_for_cu (this_cu)); | |
8080 | ||
dee91e82 DE |
8081 | /* This is cheap if the section is already read in. */ |
8082 | dwarf2_read_section (objfile, section); | |
8083 | ||
fcd3b13d | 8084 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 8085 | |
9c541725 | 8086 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
8087 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
8088 | &cu.header, section, | |
4bdcc0c1 | 8089 | abbrev_section, info_ptr, |
43988095 JK |
8090 | (this_cu->is_debug_types |
8091 | ? rcuh_kind::TYPE | |
8092 | : rcuh_kind::COMPILE)); | |
dee91e82 | 8093 | |
1ce1cefd | 8094 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
8095 | |
8096 | /* Skip dummy compilation units. */ | |
8097 | if (info_ptr >= begin_info_ptr + this_cu->length | |
8098 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 8099 | return; |
72bf9492 | 8100 | |
685af9cd TT |
8101 | abbrev_table_up abbrev_table |
8102 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
8103 | cu.header.abbrev_sect_off); | |
dee91e82 | 8104 | |
685af9cd | 8105 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
8106 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
8107 | ||
8108 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
8109 | } |
8110 | ||
3019eac3 DE |
8111 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
8112 | does not lookup the specified DWO file. | |
8113 | This cannot be used to read DWO files. | |
dee91e82 DE |
8114 | |
8115 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
8116 | This is done in order to not leave THIS_CU->cu in a state where we have |
8117 | to care whether it refers to the "main" CU or the DWO CU. | |
8118 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
8119 | |
8120 | static void | |
8121 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
8122 | die_reader_func_ftype *die_reader_func, | |
8123 | void *data) | |
8124 | { | |
33e80786 | 8125 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 8126 | } |
0018ea6f DE |
8127 | \f |
8128 | /* Type Unit Groups. | |
dee91e82 | 8129 | |
0018ea6f DE |
8130 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
8131 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
8132 | so that all types coming from the same compilation (.o file) are grouped | |
8133 | together. A future step could be to put the types in the same symtab as | |
8134 | the CU the types ultimately came from. */ | |
ff013f42 | 8135 | |
f4dc4d17 DE |
8136 | static hashval_t |
8137 | hash_type_unit_group (const void *item) | |
8138 | { | |
9a3c8263 SM |
8139 | const struct type_unit_group *tu_group |
8140 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 8141 | |
094b34ac | 8142 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 8143 | } |
348e048f DE |
8144 | |
8145 | static int | |
f4dc4d17 | 8146 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 8147 | { |
9a3c8263 SM |
8148 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
8149 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 8150 | |
094b34ac | 8151 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 8152 | } |
348e048f | 8153 | |
f4dc4d17 DE |
8154 | /* Allocate a hash table for type unit groups. */ |
8155 | ||
8156 | static htab_t | |
ed2dc618 | 8157 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
8158 | { |
8159 | return htab_create_alloc_ex (3, | |
8160 | hash_type_unit_group, | |
8161 | eq_type_unit_group, | |
8162 | NULL, | |
ed2dc618 | 8163 | &objfile->objfile_obstack, |
f4dc4d17 DE |
8164 | hashtab_obstack_allocate, |
8165 | dummy_obstack_deallocate); | |
8166 | } | |
dee91e82 | 8167 | |
f4dc4d17 DE |
8168 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
8169 | partial symtabs. We combine several TUs per psymtab to not let the size | |
8170 | of any one psymtab grow too big. */ | |
8171 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
8172 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 8173 | |
094b34ac | 8174 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
8175 | Create the type_unit_group object used to hold one or more TUs. */ |
8176 | ||
8177 | static struct type_unit_group * | |
094b34ac | 8178 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 8179 | { |
518817b3 SM |
8180 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8181 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 8182 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 8183 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 8184 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
8185 | |
8186 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8187 | struct type_unit_group); | |
094b34ac | 8188 | per_cu = &tu_group->per_cu; |
518817b3 | 8189 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 8190 | |
094b34ac DE |
8191 | if (dwarf2_per_objfile->using_index) |
8192 | { | |
8193 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8194 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
8195 | } |
8196 | else | |
8197 | { | |
9c541725 | 8198 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
8199 | struct partial_symtab *pst; |
8200 | char *name; | |
8201 | ||
8202 | /* Give the symtab a useful name for debug purposes. */ | |
8203 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
8204 | name = xstrprintf ("<type_units_%d>", | |
8205 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
8206 | else | |
8207 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
8208 | ||
8209 | pst = create_partial_symtab (per_cu, name); | |
8210 | pst->anonymous = 1; | |
f4dc4d17 | 8211 | |
094b34ac DE |
8212 | xfree (name); |
8213 | } | |
f4dc4d17 | 8214 | |
094b34ac | 8215 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8216 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
8217 | |
8218 | return tu_group; | |
8219 | } | |
8220 | ||
094b34ac DE |
8221 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
8222 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
8223 | |
8224 | static struct type_unit_group * | |
ff39bb5e | 8225 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 8226 | { |
518817b3 SM |
8227 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8228 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
8229 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
8230 | struct type_unit_group *tu_group; | |
8231 | void **slot; | |
8232 | unsigned int line_offset; | |
8233 | struct type_unit_group type_unit_group_for_lookup; | |
8234 | ||
8235 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
8236 | { | |
8237 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 8238 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
8239 | } |
8240 | ||
8241 | /* Do we need to create a new group, or can we use an existing one? */ | |
8242 | ||
8243 | if (stmt_list) | |
8244 | { | |
8245 | line_offset = DW_UNSND (stmt_list); | |
8246 | ++tu_stats->nr_symtab_sharers; | |
8247 | } | |
8248 | else | |
8249 | { | |
8250 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
8251 | We can do various things here like create one group per TU or | |
8252 | spread them over multiple groups to split up the expansion work. | |
8253 | To avoid worst case scenarios (too many groups or too large groups) | |
8254 | we, umm, group them in bunches. */ | |
8255 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
8256 | | (tu_stats->nr_stmt_less_type_units | |
8257 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
8258 | ++tu_stats->nr_stmt_less_type_units; | |
8259 | } | |
8260 | ||
094b34ac | 8261 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8262 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
8263 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
8264 | &type_unit_group_for_lookup, INSERT); | |
8265 | if (*slot != NULL) | |
8266 | { | |
9a3c8263 | 8267 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
8268 | gdb_assert (tu_group != NULL); |
8269 | } | |
8270 | else | |
8271 | { | |
9c541725 | 8272 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 8273 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
8274 | *slot = tu_group; |
8275 | ++tu_stats->nr_symtabs; | |
8276 | } | |
8277 | ||
8278 | return tu_group; | |
8279 | } | |
0018ea6f DE |
8280 | \f |
8281 | /* Partial symbol tables. */ | |
8282 | ||
8283 | /* Create a psymtab named NAME and assign it to PER_CU. | |
8284 | ||
8285 | The caller must fill in the following details: | |
8286 | dirname, textlow, texthigh. */ | |
8287 | ||
8288 | static struct partial_symtab * | |
8289 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
8290 | { | |
e3b94546 | 8291 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
8292 | struct partial_symtab *pst; |
8293 | ||
18a94d75 | 8294 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
8295 | objfile->global_psymbols, |
8296 | objfile->static_psymbols); | |
0018ea6f DE |
8297 | |
8298 | pst->psymtabs_addrmap_supported = 1; | |
8299 | ||
8300 | /* This is the glue that links PST into GDB's symbol API. */ | |
8301 | pst->read_symtab_private = per_cu; | |
8302 | pst->read_symtab = dwarf2_read_symtab; | |
8303 | per_cu->v.psymtab = pst; | |
8304 | ||
8305 | return pst; | |
8306 | } | |
8307 | ||
b93601f3 TT |
8308 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
8309 | type. */ | |
8310 | ||
8311 | struct process_psymtab_comp_unit_data | |
8312 | { | |
8313 | /* True if we are reading a DW_TAG_partial_unit. */ | |
8314 | ||
8315 | int want_partial_unit; | |
8316 | ||
8317 | /* The "pretend" language that is used if the CU doesn't declare a | |
8318 | language. */ | |
8319 | ||
8320 | enum language pretend_language; | |
8321 | }; | |
8322 | ||
0018ea6f DE |
8323 | /* die_reader_func for process_psymtab_comp_unit. */ |
8324 | ||
8325 | static void | |
8326 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8327 | const gdb_byte *info_ptr, |
0018ea6f DE |
8328 | struct die_info *comp_unit_die, |
8329 | int has_children, | |
8330 | void *data) | |
8331 | { | |
8332 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 8333 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 8334 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8335 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8336 | CORE_ADDR baseaddr; |
8337 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
8338 | struct partial_symtab *pst; | |
3a2b436a | 8339 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8340 | const char *filename; |
9a3c8263 SM |
8341 | struct process_psymtab_comp_unit_data *info |
8342 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 8343 | |
b93601f3 | 8344 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
8345 | return; |
8346 | ||
8347 | gdb_assert (! per_cu->is_debug_types); | |
8348 | ||
b93601f3 | 8349 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
8350 | |
8351 | cu->list_in_scope = &file_symbols; | |
8352 | ||
8353 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
8354 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8355 | if (filename == NULL) | |
0018ea6f | 8356 | filename = ""; |
0018ea6f DE |
8357 | |
8358 | pst = create_partial_symtab (per_cu, filename); | |
8359 | ||
8360 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8361 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
8362 | |
8363 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8364 | ||
8365 | dwarf2_find_base_address (comp_unit_die, cu); | |
8366 | ||
8367 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8368 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8369 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8370 | &best_highpc, cu, pst); | |
8371 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
8372 | /* Store the contiguous range if it is not empty; it can be empty for |
8373 | CUs with no code. */ | |
8374 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
8375 | gdbarch_adjust_dwarf2_addr (gdbarch, |
8376 | best_lowpc + baseaddr), | |
8377 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
8378 | best_highpc + baseaddr) - 1, | |
8379 | pst); | |
0018ea6f DE |
8380 | |
8381 | /* Check if comp unit has_children. | |
8382 | If so, read the rest of the partial symbols from this comp unit. | |
8383 | If not, there's no more debug_info for this comp unit. */ | |
8384 | if (has_children) | |
8385 | { | |
8386 | struct partial_die_info *first_die; | |
8387 | CORE_ADDR lowpc, highpc; | |
8388 | ||
8389 | lowpc = ((CORE_ADDR) -1); | |
8390 | highpc = ((CORE_ADDR) 0); | |
8391 | ||
8392 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8393 | ||
8394 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8395 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8396 | |
8397 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8398 | complaints from `maint check'. */ | |
8399 | if (lowpc == ((CORE_ADDR) -1)) | |
8400 | lowpc = highpc; | |
8401 | ||
8402 | /* If the compilation unit didn't have an explicit address range, | |
8403 | then use the information extracted from its child dies. */ | |
e385593e | 8404 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8405 | { |
8406 | best_lowpc = lowpc; | |
8407 | best_highpc = highpc; | |
8408 | } | |
8409 | } | |
3e29f34a MR |
8410 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
8411 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 8412 | |
8763cede | 8413 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8414 | |
8415 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8416 | { | |
8417 | int i; | |
8418 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8419 | struct dwarf2_per_cu_data *iter; | |
8420 | ||
8421 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8422 | post-pass. */ | |
8423 | pst->number_of_dependencies = len; | |
8d749320 SM |
8424 | pst->dependencies = |
8425 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8426 | for (i = 0; |
8427 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8428 | i, iter); | |
8429 | ++i) | |
8430 | pst->dependencies[i] = iter->v.psymtab; | |
8431 | ||
8432 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8433 | } | |
8434 | ||
8435 | /* Get the list of files included in the current compilation unit, | |
8436 | and build a psymtab for each of them. */ | |
8437 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8438 | ||
b4f54984 | 8439 | if (dwarf_read_debug) |
0018ea6f DE |
8440 | { |
8441 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8442 | ||
8443 | fprintf_unfiltered (gdb_stdlog, | |
8444 | "Psymtab for %s unit @0x%x: %s - %s" | |
8445 | ", %d global, %d static syms\n", | |
8446 | per_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 8447 | to_underlying (per_cu->sect_off), |
0018ea6f DE |
8448 | paddress (gdbarch, pst->textlow), |
8449 | paddress (gdbarch, pst->texthigh), | |
8450 | pst->n_global_syms, pst->n_static_syms); | |
8451 | } | |
8452 | } | |
8453 | ||
8454 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8455 | Process compilation unit THIS_CU for a psymtab. */ | |
8456 | ||
8457 | static void | |
8458 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8459 | int want_partial_unit, |
8460 | enum language pretend_language) | |
0018ea6f DE |
8461 | { |
8462 | /* If this compilation unit was already read in, free the | |
8463 | cached copy in order to read it in again. This is | |
8464 | necessary because we skipped some symbols when we first | |
8465 | read in the compilation unit (see load_partial_dies). | |
8466 | This problem could be avoided, but the benefit is unclear. */ | |
8467 | if (this_cu->cu != NULL) | |
8468 | free_one_cached_comp_unit (this_cu); | |
8469 | ||
f1902523 JK |
8470 | if (this_cu->is_debug_types) |
8471 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, build_type_psymtabs_reader, | |
8472 | NULL); | |
8473 | else | |
8474 | { | |
8475 | process_psymtab_comp_unit_data info; | |
8476 | info.want_partial_unit = want_partial_unit; | |
8477 | info.pretend_language = pretend_language; | |
8478 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
8479 | process_psymtab_comp_unit_reader, &info); | |
8480 | } | |
0018ea6f DE |
8481 | |
8482 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8483 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8484 | } |
f4dc4d17 DE |
8485 | |
8486 | /* Reader function for build_type_psymtabs. */ | |
8487 | ||
8488 | static void | |
8489 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8490 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8491 | struct die_info *type_unit_die, |
8492 | int has_children, | |
8493 | void *data) | |
8494 | { | |
ed2dc618 | 8495 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8496 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8497 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8498 | struct dwarf2_cu *cu = reader->cu; | |
8499 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8500 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8501 | struct type_unit_group *tu_group; |
8502 | struct attribute *attr; | |
8503 | struct partial_die_info *first_die; | |
8504 | CORE_ADDR lowpc, highpc; | |
8505 | struct partial_symtab *pst; | |
8506 | ||
8507 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8508 | gdb_assert (per_cu->is_debug_types); |
8509 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8510 | |
8511 | if (! has_children) | |
8512 | return; | |
8513 | ||
8514 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8515 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8516 | |
0186c6a7 | 8517 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8518 | |
8519 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
8520 | cu->list_in_scope = &file_symbols; | |
8521 | pst = create_partial_symtab (per_cu, ""); | |
8522 | pst->anonymous = 1; | |
8523 | ||
8524 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8525 | ||
8526 | lowpc = (CORE_ADDR) -1; | |
8527 | highpc = (CORE_ADDR) 0; | |
8528 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8529 | ||
8763cede | 8530 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8531 | } |
8532 | ||
73051182 DE |
8533 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8534 | ||
8535 | struct tu_abbrev_offset | |
8536 | { | |
8537 | struct signatured_type *sig_type; | |
8538 | sect_offset abbrev_offset; | |
8539 | }; | |
8540 | ||
8541 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
8542 | ||
8543 | static int | |
8544 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
8545 | { | |
9a3c8263 SM |
8546 | const struct tu_abbrev_offset * const *a |
8547 | = (const struct tu_abbrev_offset * const*) ap; | |
8548 | const struct tu_abbrev_offset * const *b | |
8549 | = (const struct tu_abbrev_offset * const*) bp; | |
9c541725 PA |
8550 | sect_offset aoff = (*a)->abbrev_offset; |
8551 | sect_offset boff = (*b)->abbrev_offset; | |
73051182 DE |
8552 | |
8553 | return (aoff > boff) - (aoff < boff); | |
8554 | } | |
8555 | ||
8556 | /* Efficiently read all the type units. | |
8557 | This does the bulk of the work for build_type_psymtabs. | |
8558 | ||
8559 | The efficiency is because we sort TUs by the abbrev table they use and | |
8560 | only read each abbrev table once. In one program there are 200K TUs | |
8561 | sharing 8K abbrev tables. | |
8562 | ||
8563 | The main purpose of this function is to support building the | |
8564 | dwarf2_per_objfile->type_unit_groups table. | |
8565 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8566 | can collapse the search space by grouping them by stmt_list. | |
8567 | The savings can be significant, in the same program from above the 200K TUs | |
8568 | share 8K stmt_list tables. | |
8569 | ||
8570 | FUNC is expected to call get_type_unit_group, which will create the | |
8571 | struct type_unit_group if necessary and add it to | |
8572 | dwarf2_per_objfile->type_unit_groups. */ | |
8573 | ||
8574 | static void | |
ed2dc618 | 8575 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8576 | { |
73051182 DE |
8577 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
8578 | struct cleanup *cleanups; | |
685af9cd | 8579 | abbrev_table_up abbrev_table; |
73051182 DE |
8580 | sect_offset abbrev_offset; |
8581 | struct tu_abbrev_offset *sorted_by_abbrev; | |
73051182 DE |
8582 | int i; |
8583 | ||
8584 | /* It's up to the caller to not call us multiple times. */ | |
8585 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8586 | ||
8587 | if (dwarf2_per_objfile->n_type_units == 0) | |
8588 | return; | |
8589 | ||
8590 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8591 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8592 | read each abbrev table in. | |
8593 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8594 | This is simpler and efficient enough for now. | |
8595 | ||
8596 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8597 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8598 | stmt_list value too so in practice this should work well. | |
8599 | ||
8600 | The basic algorithm here is: | |
8601 | ||
8602 | sort TUs by abbrev table | |
8603 | for each TU with same abbrev table: | |
8604 | read abbrev table if first user | |
8605 | read TU top level DIE | |
8606 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8607 | call FUNC */ | |
8608 | ||
b4f54984 | 8609 | if (dwarf_read_debug) |
73051182 DE |
8610 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8611 | ||
8612 | /* Sort in a separate table to maintain the order of all_type_units | |
8613 | for .gdb_index: TU indices directly index all_type_units. */ | |
8614 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
8615 | dwarf2_per_objfile->n_type_units); | |
8616 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
8617 | { | |
8618 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
8619 | ||
8620 | sorted_by_abbrev[i].sig_type = sig_type; | |
8621 | sorted_by_abbrev[i].abbrev_offset = | |
ed2dc618 SM |
8622 | read_abbrev_offset (dwarf2_per_objfile, |
8623 | sig_type->per_cu.section, | |
9c541725 | 8624 | sig_type->per_cu.sect_off); |
73051182 DE |
8625 | } |
8626 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
8627 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
8628 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
8629 | ||
9c541725 | 8630 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 DE |
8631 | |
8632 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
8633 | { | |
8634 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
8635 | ||
8636 | /* Switch to the next abbrev table if necessary. */ | |
8637 | if (abbrev_table == NULL | |
9c541725 | 8638 | || tu->abbrev_offset != abbrev_offset) |
73051182 | 8639 | { |
73051182 DE |
8640 | abbrev_offset = tu->abbrev_offset; |
8641 | abbrev_table = | |
ed2dc618 SM |
8642 | abbrev_table_read_table (dwarf2_per_objfile, |
8643 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8644 | abbrev_offset); |
8645 | ++tu_stats->nr_uniq_abbrev_tables; | |
8646 | } | |
8647 | ||
685af9cd TT |
8648 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table.get (), |
8649 | 0, 0, build_type_psymtabs_reader, NULL); | |
73051182 DE |
8650 | } |
8651 | ||
73051182 | 8652 | do_cleanups (cleanups); |
6aa5f3a6 | 8653 | } |
73051182 | 8654 | |
6aa5f3a6 DE |
8655 | /* Print collected type unit statistics. */ |
8656 | ||
8657 | static void | |
ed2dc618 | 8658 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8659 | { |
8660 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8661 | ||
8662 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
8663 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
8664 | dwarf2_per_objfile->n_type_units); | |
8665 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
8666 | tu_stats->nr_uniq_abbrev_tables); | |
8667 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8668 | tu_stats->nr_symtabs); | |
8669 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8670 | tu_stats->nr_symtab_sharers); | |
8671 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8672 | tu_stats->nr_stmt_less_type_units); | |
8673 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8674 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8675 | } |
8676 | ||
f4dc4d17 DE |
8677 | /* Traversal function for build_type_psymtabs. */ |
8678 | ||
8679 | static int | |
8680 | build_type_psymtab_dependencies (void **slot, void *info) | |
8681 | { | |
ed2dc618 SM |
8682 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8683 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8684 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8685 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8686 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8687 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8688 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8689 | struct signatured_type *iter; | |
f4dc4d17 DE |
8690 | int i; |
8691 | ||
8692 | gdb_assert (len > 0); | |
0186c6a7 | 8693 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8694 | |
8695 | pst->number_of_dependencies = len; | |
8d749320 SM |
8696 | pst->dependencies = |
8697 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8698 | for (i = 0; |
0186c6a7 | 8699 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8700 | ++i) |
8701 | { | |
0186c6a7 DE |
8702 | gdb_assert (iter->per_cu.is_debug_types); |
8703 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8704 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8705 | } |
8706 | ||
0186c6a7 | 8707 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8708 | |
8709 | return 1; | |
8710 | } | |
8711 | ||
8712 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8713 | Build partial symbol tables for the .debug_types comp-units. */ | |
8714 | ||
8715 | static void | |
ed2dc618 | 8716 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8717 | { |
ed2dc618 | 8718 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8719 | return; |
8720 | ||
ed2dc618 | 8721 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8722 | } |
f4dc4d17 | 8723 | |
6aa5f3a6 DE |
8724 | /* Traversal function for process_skeletonless_type_unit. |
8725 | Read a TU in a DWO file and build partial symbols for it. */ | |
8726 | ||
8727 | static int | |
8728 | process_skeletonless_type_unit (void **slot, void *info) | |
8729 | { | |
8730 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8731 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8732 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8733 | struct signatured_type find_entry, *entry; |
8734 | ||
8735 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8736 | ||
8737 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8738 | { | |
8739 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8740 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8741 | } |
8742 | ||
8743 | find_entry.signature = dwo_unit->signature; | |
8744 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8745 | INSERT); | |
8746 | /* If we've already seen this type there's nothing to do. What's happening | |
8747 | is we're doing our own version of comdat-folding here. */ | |
8748 | if (*slot != NULL) | |
8749 | return 1; | |
8750 | ||
8751 | /* This does the job that create_all_type_units would have done for | |
8752 | this TU. */ | |
ed2dc618 SM |
8753 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8754 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8755 | *slot = entry; |
8756 | ||
8757 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
8758 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
8759 | build_type_psymtabs_reader, NULL); | |
8760 | ||
8761 | return 1; | |
8762 | } | |
8763 | ||
8764 | /* Traversal function for process_skeletonless_type_units. */ | |
8765 | ||
8766 | static int | |
8767 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8768 | { | |
8769 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8770 | ||
8771 | if (dwo_file->tus != NULL) | |
8772 | { | |
8773 | htab_traverse_noresize (dwo_file->tus, | |
8774 | process_skeletonless_type_unit, info); | |
8775 | } | |
8776 | ||
8777 | return 1; | |
8778 | } | |
8779 | ||
8780 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8781 | This is needed in case a TU was emitted without its skeleton. | |
8782 | Note: This can't be done until we know what all the DWO files are. */ | |
8783 | ||
8784 | static void | |
ed2dc618 | 8785 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8786 | { |
8787 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8788 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8789 | && dwarf2_per_objfile->dwo_files != NULL) |
8790 | { | |
8791 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8792 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8793 | dwarf2_per_objfile); |
6aa5f3a6 | 8794 | } |
348e048f DE |
8795 | } |
8796 | ||
ed2dc618 | 8797 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8798 | |
8799 | static void | |
ed2dc618 | 8800 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
8801 | { |
8802 | int i; | |
8803 | ||
8804 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
8805 | { | |
ed2dc618 | 8806 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
95554aad TT |
8807 | struct partial_symtab *pst = per_cu->v.psymtab; |
8808 | int j; | |
8809 | ||
36586728 TT |
8810 | if (pst == NULL) |
8811 | continue; | |
8812 | ||
95554aad TT |
8813 | for (j = 0; j < pst->number_of_dependencies; ++j) |
8814 | { | |
8815 | /* Set the 'user' field only if it is not already set. */ | |
8816 | if (pst->dependencies[j]->user == NULL) | |
8817 | pst->dependencies[j]->user = pst; | |
8818 | } | |
8819 | } | |
8820 | } | |
8821 | ||
93311388 DE |
8822 | /* Build the partial symbol table by doing a quick pass through the |
8823 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8824 | |
93311388 | 8825 | static void |
ed2dc618 | 8826 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8827 | { |
791afaa2 | 8828 | struct cleanup *back_to; |
21b2bd31 | 8829 | int i; |
ed2dc618 | 8830 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8831 | |
b4f54984 | 8832 | if (dwarf_read_debug) |
45cfd468 DE |
8833 | { |
8834 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8835 | objfile_name (objfile)); |
45cfd468 DE |
8836 | } |
8837 | ||
98bfdba5 PA |
8838 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8839 | ||
be391dca | 8840 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8841 | |
93311388 DE |
8842 | /* Any cached compilation units will be linked by the per-objfile |
8843 | read_in_chain. Make sure to free them when we're done. */ | |
ed2dc618 | 8844 | back_to = make_cleanup (free_cached_comp_units, dwarf2_per_objfile); |
72bf9492 | 8845 | |
ed2dc618 | 8846 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8847 | |
ed2dc618 | 8848 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8849 | |
60606b2c TT |
8850 | /* Create a temporary address map on a temporary obstack. We later |
8851 | copy this to the final obstack. */ | |
8268c778 | 8852 | auto_obstack temp_obstack; |
791afaa2 TT |
8853 | |
8854 | scoped_restore save_psymtabs_addrmap | |
8855 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8856 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8857 | |
21b2bd31 | 8858 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 8859 | { |
ed2dc618 | 8860 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
aaa75496 | 8861 | |
b93601f3 | 8862 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 8863 | } |
ff013f42 | 8864 | |
6aa5f3a6 | 8865 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8866 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8867 | |
8868 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8869 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8870 | { | |
8871 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8872 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8873 | } |
8874 | ||
b4f54984 | 8875 | if (dwarf_read_debug) |
ed2dc618 | 8876 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8877 | |
ed2dc618 | 8878 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8879 | |
ff013f42 JK |
8880 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8881 | &objfile->objfile_obstack); | |
791afaa2 TT |
8882 | /* At this point we want to keep the address map. */ |
8883 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8884 | |
ae038cb0 | 8885 | do_cleanups (back_to); |
45cfd468 | 8886 | |
b4f54984 | 8887 | if (dwarf_read_debug) |
45cfd468 | 8888 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8889 | objfile_name (objfile)); |
ae038cb0 DJ |
8890 | } |
8891 | ||
3019eac3 | 8892 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8893 | |
8894 | static void | |
dee91e82 | 8895 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8896 | const gdb_byte *info_ptr, |
dee91e82 DE |
8897 | struct die_info *comp_unit_die, |
8898 | int has_children, | |
8899 | void *data) | |
ae038cb0 | 8900 | { |
dee91e82 | 8901 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8902 | |
95554aad | 8903 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8904 | |
ae038cb0 DJ |
8905 | /* Check if comp unit has_children. |
8906 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8907 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8908 | if (has_children) |
dee91e82 DE |
8909 | load_partial_dies (reader, info_ptr, 0); |
8910 | } | |
98bfdba5 | 8911 | |
dee91e82 DE |
8912 | /* Load the partial DIEs for a secondary CU into memory. |
8913 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8914 | |
dee91e82 DE |
8915 | static void |
8916 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8917 | { | |
f4dc4d17 DE |
8918 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
8919 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
8920 | } |
8921 | ||
ae038cb0 | 8922 | static void |
ed2dc618 | 8923 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8924 | struct dwarf2_section_info *section, |
f1902523 | 8925 | struct dwarf2_section_info *abbrev_section, |
36586728 TT |
8926 | unsigned int is_dwz, |
8927 | int *n_allocated, | |
8928 | int *n_comp_units, | |
8929 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 8930 | { |
d521ce57 | 8931 | const gdb_byte *info_ptr; |
ed2dc618 | 8932 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8933 | |
b4f54984 | 8934 | if (dwarf_read_debug) |
bf6af496 | 8935 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8936 | get_section_name (section), |
8937 | get_section_file_name (section)); | |
bf6af496 | 8938 | |
36586728 | 8939 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8940 | |
36586728 | 8941 | info_ptr = section->buffer; |
6e70227d | 8942 | |
36586728 | 8943 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8944 | { |
ae038cb0 | 8945 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8946 | |
9c541725 | 8947 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8948 | |
f1902523 | 8949 | comp_unit_head cu_header; |
ed2dc618 SM |
8950 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8951 | abbrev_section, info_ptr, | |
8952 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8953 | |
8954 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8955 | if (cu_header.unit_type != DW_UT_type) |
8956 | { | |
8957 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8958 | struct dwarf2_per_cu_data); | |
8959 | memset (this_cu, 0, sizeof (*this_cu)); | |
8960 | } | |
8961 | else | |
8962 | { | |
8963 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8964 | struct signatured_type); | |
8965 | memset (sig_type, 0, sizeof (*sig_type)); | |
8966 | sig_type->signature = cu_header.signature; | |
8967 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8968 | this_cu = &sig_type->per_cu; | |
8969 | } | |
8970 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8971 | this_cu->sect_off = sect_off; |
f1902523 | 8972 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8973 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8974 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8975 | this_cu->section = section; |
ae038cb0 | 8976 | |
36586728 | 8977 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 8978 | { |
36586728 | 8979 | *n_allocated *= 2; |
224c3ddb SM |
8980 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
8981 | *all_comp_units, *n_allocated); | |
ae038cb0 | 8982 | } |
36586728 TT |
8983 | (*all_comp_units)[*n_comp_units] = this_cu; |
8984 | ++*n_comp_units; | |
ae038cb0 DJ |
8985 | |
8986 | info_ptr = info_ptr + this_cu->length; | |
8987 | } | |
36586728 TT |
8988 | } |
8989 | ||
8990 | /* Create a list of all compilation units in OBJFILE. | |
8991 | This is only done for -readnow and building partial symtabs. */ | |
8992 | ||
8993 | static void | |
ed2dc618 | 8994 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 TT |
8995 | { |
8996 | int n_allocated; | |
8997 | int n_comp_units; | |
8998 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 8999 | struct dwz_file *dwz; |
ed2dc618 | 9000 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
36586728 TT |
9001 | |
9002 | n_comp_units = 0; | |
9003 | n_allocated = 10; | |
8d749320 | 9004 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 | 9005 | |
ed2dc618 | 9006 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
f1902523 | 9007 | &dwarf2_per_objfile->abbrev, 0, |
36586728 TT |
9008 | &n_allocated, &n_comp_units, &all_comp_units); |
9009 | ||
ed2dc618 | 9010 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 9011 | if (dwz != NULL) |
ed2dc618 SM |
9012 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
9013 | 1, &n_allocated, &n_comp_units, | |
4db1a1dc | 9014 | &all_comp_units); |
ae038cb0 | 9015 | |
8d749320 SM |
9016 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
9017 | struct dwarf2_per_cu_data *, | |
9018 | n_comp_units); | |
ae038cb0 DJ |
9019 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
9020 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
9021 | xfree (all_comp_units); | |
9022 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
9023 | } |
9024 | ||
5734ee8b | 9025 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 9026 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 9027 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
9028 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
9029 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 9030 | |
72bf9492 DJ |
9031 | static void |
9032 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
9033 | CORE_ADDR *highpc, int set_addrmap, |
9034 | struct dwarf2_cu *cu) | |
c906108c | 9035 | { |
72bf9492 | 9036 | struct partial_die_info *pdi; |
c906108c | 9037 | |
91c24f0a DC |
9038 | /* Now, march along the PDI's, descending into ones which have |
9039 | interesting children but skipping the children of the other ones, | |
9040 | until we reach the end of the compilation unit. */ | |
c906108c | 9041 | |
72bf9492 | 9042 | pdi = first_die; |
91c24f0a | 9043 | |
72bf9492 DJ |
9044 | while (pdi != NULL) |
9045 | { | |
9046 | fixup_partial_die (pdi, cu); | |
c906108c | 9047 | |
f55ee35c | 9048 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
9049 | children, so we need to look at them. Ditto for anonymous |
9050 | enums. */ | |
933c6fe4 | 9051 | |
72bf9492 | 9052 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 9053 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
9054 | || pdi->tag == DW_TAG_imported_unit |
9055 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 9056 | { |
72bf9492 | 9057 | switch (pdi->tag) |
c906108c SS |
9058 | { |
9059 | case DW_TAG_subprogram: | |
b1dc1806 | 9060 | case DW_TAG_inlined_subroutine: |
cdc07690 | 9061 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 9062 | break; |
72929c62 | 9063 | case DW_TAG_constant: |
c906108c SS |
9064 | case DW_TAG_variable: |
9065 | case DW_TAG_typedef: | |
91c24f0a | 9066 | case DW_TAG_union_type: |
72bf9492 | 9067 | if (!pdi->is_declaration) |
63d06c5c | 9068 | { |
72bf9492 | 9069 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
9070 | } |
9071 | break; | |
c906108c | 9072 | case DW_TAG_class_type: |
680b30c7 | 9073 | case DW_TAG_interface_type: |
c906108c | 9074 | case DW_TAG_structure_type: |
72bf9492 | 9075 | if (!pdi->is_declaration) |
c906108c | 9076 | { |
72bf9492 | 9077 | add_partial_symbol (pdi, cu); |
c906108c | 9078 | } |
e98c9e7c TT |
9079 | if (cu->language == language_rust && pdi->has_children) |
9080 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
9081 | set_addrmap, cu); | |
c906108c | 9082 | break; |
91c24f0a | 9083 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
9084 | if (!pdi->is_declaration) |
9085 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
9086 | break; |
9087 | case DW_TAG_base_type: | |
a02abb62 | 9088 | case DW_TAG_subrange_type: |
c906108c | 9089 | /* File scope base type definitions are added to the partial |
c5aa993b | 9090 | symbol table. */ |
72bf9492 | 9091 | add_partial_symbol (pdi, cu); |
c906108c | 9092 | break; |
d9fa45fe | 9093 | case DW_TAG_namespace: |
cdc07690 | 9094 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 9095 | break; |
5d7cb8df | 9096 | case DW_TAG_module: |
cdc07690 | 9097 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 9098 | break; |
95554aad TT |
9099 | case DW_TAG_imported_unit: |
9100 | { | |
9101 | struct dwarf2_per_cu_data *per_cu; | |
9102 | ||
f4dc4d17 DE |
9103 | /* For now we don't handle imported units in type units. */ |
9104 | if (cu->per_cu->is_debug_types) | |
9105 | { | |
9106 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9107 | " supported in type units [in module %s]"), | |
518817b3 | 9108 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9109 | } |
9110 | ||
e3b94546 SM |
9111 | per_cu = dwarf2_find_containing_comp_unit |
9112 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 9113 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
9114 | |
9115 | /* Go read the partial unit, if needed. */ | |
9116 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 9117 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 9118 | |
f4dc4d17 | 9119 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 9120 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
9121 | } |
9122 | break; | |
74921315 KS |
9123 | case DW_TAG_imported_declaration: |
9124 | add_partial_symbol (pdi, cu); | |
9125 | break; | |
c906108c SS |
9126 | default: |
9127 | break; | |
9128 | } | |
9129 | } | |
9130 | ||
72bf9492 DJ |
9131 | /* If the die has a sibling, skip to the sibling. */ |
9132 | ||
9133 | pdi = pdi->die_sibling; | |
9134 | } | |
9135 | } | |
9136 | ||
9137 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 9138 | |
72bf9492 | 9139 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 9140 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
9141 | Enumerators are an exception; they use the scope of their parent |
9142 | enumeration type, i.e. the name of the enumeration type is not | |
9143 | prepended to the enumerator. | |
91c24f0a | 9144 | |
72bf9492 DJ |
9145 | There are two complexities. One is DW_AT_specification; in this |
9146 | case "parent" means the parent of the target of the specification, | |
9147 | instead of the direct parent of the DIE. The other is compilers | |
9148 | which do not emit DW_TAG_namespace; in this case we try to guess | |
9149 | the fully qualified name of structure types from their members' | |
9150 | linkage names. This must be done using the DIE's children rather | |
9151 | than the children of any DW_AT_specification target. We only need | |
9152 | to do this for structures at the top level, i.e. if the target of | |
9153 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
9154 | have a parent. */ | |
9155 | ||
9156 | /* Compute the scope prefix associated with PDI's parent, in | |
9157 | compilation unit CU. The result will be allocated on CU's | |
9158 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
9159 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 9160 | static const char * |
72bf9492 DJ |
9161 | partial_die_parent_scope (struct partial_die_info *pdi, |
9162 | struct dwarf2_cu *cu) | |
9163 | { | |
15d034d0 | 9164 | const char *grandparent_scope; |
72bf9492 | 9165 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 9166 | |
72bf9492 DJ |
9167 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
9168 | then this means the parent of the specification DIE. */ | |
9169 | ||
9170 | real_pdi = pdi; | |
72bf9492 | 9171 | while (real_pdi->has_specification) |
36586728 TT |
9172 | real_pdi = find_partial_die (real_pdi->spec_offset, |
9173 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
9174 | |
9175 | parent = real_pdi->die_parent; | |
9176 | if (parent == NULL) | |
9177 | return NULL; | |
9178 | ||
9179 | if (parent->scope_set) | |
9180 | return parent->scope; | |
9181 | ||
9182 | fixup_partial_die (parent, cu); | |
9183 | ||
10b3939b | 9184 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 9185 | |
acebe513 UW |
9186 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
9187 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
9188 | Work around this problem here. */ | |
9189 | if (cu->language == language_cplus | |
6e70227d | 9190 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
9191 | && strcmp (parent->name, "::") == 0 |
9192 | && grandparent_scope == NULL) | |
9193 | { | |
9194 | parent->scope = NULL; | |
9195 | parent->scope_set = 1; | |
9196 | return NULL; | |
9197 | } | |
9198 | ||
9c6c53f7 SA |
9199 | if (pdi->tag == DW_TAG_enumerator) |
9200 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
9201 | parent->scope = grandparent_scope; | |
9202 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 9203 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
9204 | || parent->tag == DW_TAG_structure_type |
9205 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 9206 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
9207 | || parent->tag == DW_TAG_union_type |
9208 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
9209 | { |
9210 | if (grandparent_scope == NULL) | |
9211 | parent->scope = parent->name; | |
9212 | else | |
3e43a32a MS |
9213 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
9214 | grandparent_scope, | |
f55ee35c | 9215 | parent->name, 0, cu); |
72bf9492 | 9216 | } |
72bf9492 DJ |
9217 | else |
9218 | { | |
9219 | /* FIXME drow/2004-04-01: What should we be doing with | |
9220 | function-local names? For partial symbols, we should probably be | |
9221 | ignoring them. */ | |
9222 | complaint (&symfile_complaints, | |
e2e0b3e5 | 9223 | _("unhandled containing DIE tag %d for DIE at %d"), |
9c541725 | 9224 | parent->tag, to_underlying (pdi->sect_off)); |
72bf9492 | 9225 | parent->scope = grandparent_scope; |
c906108c SS |
9226 | } |
9227 | ||
72bf9492 DJ |
9228 | parent->scope_set = 1; |
9229 | return parent->scope; | |
9230 | } | |
9231 | ||
9232 | /* Return the fully scoped name associated with PDI, from compilation unit | |
9233 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 9234 | |
72bf9492 DJ |
9235 | static char * |
9236 | partial_die_full_name (struct partial_die_info *pdi, | |
9237 | struct dwarf2_cu *cu) | |
9238 | { | |
15d034d0 | 9239 | const char *parent_scope; |
72bf9492 | 9240 | |
98bfdba5 PA |
9241 | /* If this is a template instantiation, we can not work out the |
9242 | template arguments from partial DIEs. So, unfortunately, we have | |
9243 | to go through the full DIEs. At least any work we do building | |
9244 | types here will be reused if full symbols are loaded later. */ | |
9245 | if (pdi->has_template_arguments) | |
9246 | { | |
9247 | fixup_partial_die (pdi, cu); | |
9248 | ||
9249 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
9250 | { | |
9251 | struct die_info *die; | |
9252 | struct attribute attr; | |
9253 | struct dwarf2_cu *ref_cu = cu; | |
9254 | ||
b64f50a1 | 9255 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 9256 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 9257 | attr.form = DW_FORM_ref_addr; |
9c541725 | 9258 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
9259 | die = follow_die_ref (NULL, &attr, &ref_cu); |
9260 | ||
9261 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
9262 | } | |
9263 | } | |
9264 | ||
72bf9492 DJ |
9265 | parent_scope = partial_die_parent_scope (pdi, cu); |
9266 | if (parent_scope == NULL) | |
9267 | return NULL; | |
9268 | else | |
f55ee35c | 9269 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
9270 | } |
9271 | ||
9272 | static void | |
72bf9492 | 9273 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 9274 | { |
518817b3 SM |
9275 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9276 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 9277 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9278 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 9279 | CORE_ADDR addr = 0; |
15d034d0 | 9280 | const char *actual_name = NULL; |
e142c38c | 9281 | CORE_ADDR baseaddr; |
15d034d0 | 9282 | char *built_actual_name; |
e142c38c DJ |
9283 | |
9284 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9285 | |
15d034d0 TT |
9286 | built_actual_name = partial_die_full_name (pdi, cu); |
9287 | if (built_actual_name != NULL) | |
9288 | actual_name = built_actual_name; | |
63d06c5c | 9289 | |
72bf9492 DJ |
9290 | if (actual_name == NULL) |
9291 | actual_name = pdi->name; | |
9292 | ||
c906108c SS |
9293 | switch (pdi->tag) |
9294 | { | |
b1dc1806 | 9295 | case DW_TAG_inlined_subroutine: |
c906108c | 9296 | case DW_TAG_subprogram: |
3e29f34a | 9297 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 9298 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 9299 | { |
2cfa0c8d JB |
9300 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
9301 | of the global scope. But in Ada, we want to be able to access | |
9302 | nested procedures globally. So all Ada subprograms are stored | |
9303 | in the global scope. */ | |
f47fb265 | 9304 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9305 | built_actual_name != NULL, |
f47fb265 MS |
9306 | VAR_DOMAIN, LOC_BLOCK, |
9307 | &objfile->global_psymbols, | |
1762568f | 9308 | addr, cu->language, objfile); |
c906108c SS |
9309 | } |
9310 | else | |
9311 | { | |
f47fb265 | 9312 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9313 | built_actual_name != NULL, |
f47fb265 MS |
9314 | VAR_DOMAIN, LOC_BLOCK, |
9315 | &objfile->static_psymbols, | |
1762568f | 9316 | addr, cu->language, objfile); |
c906108c | 9317 | } |
0c1b455e TT |
9318 | |
9319 | if (pdi->main_subprogram && actual_name != NULL) | |
9320 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 9321 | break; |
72929c62 JB |
9322 | case DW_TAG_constant: |
9323 | { | |
af5bf4ad | 9324 | std::vector<partial_symbol *> *list; |
72929c62 JB |
9325 | |
9326 | if (pdi->is_external) | |
9327 | list = &objfile->global_psymbols; | |
9328 | else | |
9329 | list = &objfile->static_psymbols; | |
f47fb265 | 9330 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9331 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 9332 | list, 0, cu->language, objfile); |
72929c62 JB |
9333 | } |
9334 | break; | |
c906108c | 9335 | case DW_TAG_variable: |
95554aad TT |
9336 | if (pdi->d.locdesc) |
9337 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 9338 | |
95554aad | 9339 | if (pdi->d.locdesc |
caac4577 JG |
9340 | && addr == 0 |
9341 | && !dwarf2_per_objfile->has_section_at_zero) | |
9342 | { | |
9343 | /* A global or static variable may also have been stripped | |
9344 | out by the linker if unused, in which case its address | |
9345 | will be nullified; do not add such variables into partial | |
9346 | symbol table then. */ | |
9347 | } | |
9348 | else if (pdi->is_external) | |
c906108c SS |
9349 | { |
9350 | /* Global Variable. | |
9351 | Don't enter into the minimal symbol tables as there is | |
9352 | a minimal symbol table entry from the ELF symbols already. | |
9353 | Enter into partial symbol table if it has a location | |
9354 | descriptor or a type. | |
9355 | If the location descriptor is missing, new_symbol will create | |
9356 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
9357 | be determined from the minimal symbol table whenever the variable | |
9358 | is referenced. | |
9359 | The address for the partial symbol table entry is not | |
9360 | used by GDB, but it comes in handy for debugging partial symbol | |
9361 | table building. */ | |
9362 | ||
95554aad | 9363 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 9364 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9365 | built_actual_name != NULL, |
f47fb265 MS |
9366 | VAR_DOMAIN, LOC_STATIC, |
9367 | &objfile->global_psymbols, | |
1762568f | 9368 | addr + baseaddr, |
f47fb265 | 9369 | cu->language, objfile); |
c906108c SS |
9370 | } |
9371 | else | |
9372 | { | |
ff908ebf AW |
9373 | int has_loc = pdi->d.locdesc != NULL; |
9374 | ||
9375 | /* Static Variable. Skip symbols whose value we cannot know (those | |
9376 | without location descriptors or constant values). */ | |
9377 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 9378 | { |
15d034d0 | 9379 | xfree (built_actual_name); |
decbce07 MS |
9380 | return; |
9381 | } | |
ff908ebf | 9382 | |
f47fb265 | 9383 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9384 | built_actual_name != NULL, |
f47fb265 MS |
9385 | VAR_DOMAIN, LOC_STATIC, |
9386 | &objfile->static_psymbols, | |
ff908ebf | 9387 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 9388 | cu->language, objfile); |
c906108c SS |
9389 | } |
9390 | break; | |
9391 | case DW_TAG_typedef: | |
9392 | case DW_TAG_base_type: | |
a02abb62 | 9393 | case DW_TAG_subrange_type: |
38d518c9 | 9394 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9395 | built_actual_name != NULL, |
176620f1 | 9396 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 9397 | &objfile->static_psymbols, |
1762568f | 9398 | 0, cu->language, objfile); |
c906108c | 9399 | break; |
74921315 | 9400 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
9401 | case DW_TAG_namespace: |
9402 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 9403 | built_actual_name != NULL, |
72bf9492 DJ |
9404 | VAR_DOMAIN, LOC_TYPEDEF, |
9405 | &objfile->global_psymbols, | |
1762568f | 9406 | 0, cu->language, objfile); |
72bf9492 | 9407 | break; |
530e8392 KB |
9408 | case DW_TAG_module: |
9409 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9410 | built_actual_name != NULL, | |
9411 | MODULE_DOMAIN, LOC_TYPEDEF, | |
9412 | &objfile->global_psymbols, | |
1762568f | 9413 | 0, cu->language, objfile); |
530e8392 | 9414 | break; |
c906108c | 9415 | case DW_TAG_class_type: |
680b30c7 | 9416 | case DW_TAG_interface_type: |
c906108c SS |
9417 | case DW_TAG_structure_type: |
9418 | case DW_TAG_union_type: | |
9419 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9420 | /* Skip external references. The DWARF standard says in the section |
9421 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9422 | structure, union or class type is represented by a structure, | |
9423 | union or class entry that does not have a byte size attribute | |
9424 | and that has a DW_AT_declaration attribute." */ | |
9425 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9426 | { |
15d034d0 | 9427 | xfree (built_actual_name); |
decbce07 MS |
9428 | return; |
9429 | } | |
fa4028e9 | 9430 | |
63d06c5c DC |
9431 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9432 | static vs. global. */ | |
38d518c9 | 9433 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9434 | built_actual_name != NULL, |
176620f1 | 9435 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 9436 | cu->language == language_cplus |
63d06c5c DC |
9437 | ? &objfile->global_psymbols |
9438 | : &objfile->static_psymbols, | |
1762568f | 9439 | 0, cu->language, objfile); |
c906108c | 9440 | |
c906108c SS |
9441 | break; |
9442 | case DW_TAG_enumerator: | |
38d518c9 | 9443 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9444 | built_actual_name != NULL, |
176620f1 | 9445 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 9446 | cu->language == language_cplus |
f6fe98ef DJ |
9447 | ? &objfile->global_psymbols |
9448 | : &objfile->static_psymbols, | |
1762568f | 9449 | 0, cu->language, objfile); |
c906108c SS |
9450 | break; |
9451 | default: | |
9452 | break; | |
9453 | } | |
5c4e30ca | 9454 | |
15d034d0 | 9455 | xfree (built_actual_name); |
c906108c SS |
9456 | } |
9457 | ||
5c4e30ca DC |
9458 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9459 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9460 | the name of the enclosing namespace. */ | |
91c24f0a | 9461 | |
72bf9492 DJ |
9462 | static void |
9463 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9464 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9465 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9466 | { |
72bf9492 | 9467 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9468 | |
72bf9492 | 9469 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9470 | |
9471 | /* Now scan partial symbols in that namespace. */ | |
9472 | ||
91c24f0a | 9473 | if (pdi->has_children) |
cdc07690 | 9474 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9475 | } |
9476 | ||
5d7cb8df JK |
9477 | /* Read a partial die corresponding to a Fortran module. */ |
9478 | ||
9479 | static void | |
9480 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9481 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9482 | { |
530e8392 KB |
9483 | /* Add a symbol for the namespace. */ |
9484 | ||
9485 | add_partial_symbol (pdi, cu); | |
9486 | ||
f55ee35c | 9487 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9488 | |
9489 | if (pdi->has_children) | |
cdc07690 | 9490 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9491 | } |
9492 | ||
b1dc1806 XR |
9493 | /* Read a partial die corresponding to a subprogram or an inlined |
9494 | subprogram and create a partial symbol for that subprogram. | |
9495 | When the CU language allows it, this routine also defines a partial | |
9496 | symbol for each nested subprogram that this subprogram contains. | |
9497 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9498 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9499 | |
cdc07690 YQ |
9500 | PDI may also be a lexical block, in which case we simply search |
9501 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9502 | Again, this is only performed when the CU language allows this |
9503 | type of definitions. */ | |
9504 | ||
9505 | static void | |
9506 | add_partial_subprogram (struct partial_die_info *pdi, | |
9507 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9508 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9509 | { |
b1dc1806 | 9510 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9511 | { |
9512 | if (pdi->has_pc_info) | |
9513 | { | |
9514 | if (pdi->lowpc < *lowpc) | |
9515 | *lowpc = pdi->lowpc; | |
9516 | if (pdi->highpc > *highpc) | |
9517 | *highpc = pdi->highpc; | |
cdc07690 | 9518 | if (set_addrmap) |
5734ee8b | 9519 | { |
518817b3 | 9520 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9521 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9522 | CORE_ADDR baseaddr; | |
9523 | CORE_ADDR highpc; | |
9524 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9525 | |
9526 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9527 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
9528 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
9529 | pdi->lowpc + baseaddr); | |
9530 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
9531 | pdi->highpc + baseaddr); | |
9532 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 9533 | cu->per_cu->v.psymtab); |
5734ee8b | 9534 | } |
481860b3 GB |
9535 | } |
9536 | ||
9537 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9538 | { | |
bc30ff58 | 9539 | if (!pdi->is_declaration) |
e8d05480 JB |
9540 | /* Ignore subprogram DIEs that do not have a name, they are |
9541 | illegal. Do not emit a complaint at this point, we will | |
9542 | do so when we convert this psymtab into a symtab. */ | |
9543 | if (pdi->name) | |
9544 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9545 | } |
9546 | } | |
6e70227d | 9547 | |
bc30ff58 JB |
9548 | if (! pdi->has_children) |
9549 | return; | |
9550 | ||
9551 | if (cu->language == language_ada) | |
9552 | { | |
9553 | pdi = pdi->die_child; | |
9554 | while (pdi != NULL) | |
9555 | { | |
9556 | fixup_partial_die (pdi, cu); | |
9557 | if (pdi->tag == DW_TAG_subprogram | |
b1dc1806 | 9558 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9559 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9560 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9561 | pdi = pdi->die_sibling; |
9562 | } | |
9563 | } | |
9564 | } | |
9565 | ||
91c24f0a DC |
9566 | /* Read a partial die corresponding to an enumeration type. */ |
9567 | ||
72bf9492 DJ |
9568 | static void |
9569 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9570 | struct dwarf2_cu *cu) | |
91c24f0a | 9571 | { |
72bf9492 | 9572 | struct partial_die_info *pdi; |
91c24f0a DC |
9573 | |
9574 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9575 | add_partial_symbol (enum_pdi, cu); |
9576 | ||
9577 | pdi = enum_pdi->die_child; | |
9578 | while (pdi) | |
91c24f0a | 9579 | { |
72bf9492 | 9580 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 9581 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 9582 | else |
72bf9492 DJ |
9583 | add_partial_symbol (pdi, cu); |
9584 | pdi = pdi->die_sibling; | |
91c24f0a | 9585 | } |
91c24f0a DC |
9586 | } |
9587 | ||
6caca83c CC |
9588 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9589 | ||
9590 | static unsigned int | |
d521ce57 | 9591 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9592 | { |
9593 | unsigned int bytes_read; | |
9594 | ||
9595 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9596 | } | |
9597 | ||
685af9cd TT |
9598 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9599 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9600 | ||
4bb7a0a7 DJ |
9601 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9602 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9603 | the initial number. */ | |
9604 | ||
9605 | static struct abbrev_info * | |
685af9cd TT |
9606 | peek_die_abbrev (const die_reader_specs &reader, |
9607 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9608 | { |
685af9cd | 9609 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9610 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9611 | unsigned int abbrev_number |
9612 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9613 | |
9614 | if (abbrev_number == 0) | |
9615 | return NULL; | |
9616 | ||
685af9cd | 9617 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9618 | if (!abbrev) |
9619 | { | |
422b9917 DE |
9620 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9621 | " at offset 0x%x [in module %s]"), | |
9622 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
9c541725 | 9623 | to_underlying (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9624 | } |
9625 | ||
9626 | return abbrev; | |
9627 | } | |
9628 | ||
93311388 DE |
9629 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9630 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9631 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9632 | ||
d521ce57 TT |
9633 | static const gdb_byte * |
9634 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9635 | { |
4bb7a0a7 DJ |
9636 | while (1) |
9637 | { | |
685af9cd TT |
9638 | unsigned int bytes_read; |
9639 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9640 | ||
4bb7a0a7 DJ |
9641 | if (abbrev == NULL) |
9642 | return info_ptr + bytes_read; | |
9643 | else | |
dee91e82 | 9644 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9645 | } |
9646 | } | |
9647 | ||
93311388 DE |
9648 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9649 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9650 | abbrev corresponding to that skipped uleb128 should be passed in |
9651 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9652 | children. */ | |
9653 | ||
d521ce57 TT |
9654 | static const gdb_byte * |
9655 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9656 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9657 | { |
9658 | unsigned int bytes_read; | |
9659 | struct attribute attr; | |
dee91e82 DE |
9660 | bfd *abfd = reader->abfd; |
9661 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9662 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9663 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9664 | unsigned int form, i; |
9665 | ||
9666 | for (i = 0; i < abbrev->num_attrs; i++) | |
9667 | { | |
9668 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9669 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9670 | { | |
dee91e82 | 9671 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9672 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
9673 | complaint (&symfile_complaints, |
9674 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 9675 | else |
b9502d3f | 9676 | { |
9c541725 PA |
9677 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9678 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9679 | |
9680 | if (sibling_ptr < info_ptr) | |
9681 | complaint (&symfile_complaints, | |
9682 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
9683 | else if (sibling_ptr > reader->buffer_end) |
9684 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9685 | else |
9686 | return sibling_ptr; | |
9687 | } | |
4bb7a0a7 DJ |
9688 | } |
9689 | ||
9690 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9691 | form = abbrev->attrs[i].form; | |
9692 | skip_attribute: | |
9693 | switch (form) | |
9694 | { | |
4bb7a0a7 | 9695 | case DW_FORM_ref_addr: |
ae411497 TT |
9696 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9697 | and later it is offset sized. */ | |
9698 | if (cu->header.version == 2) | |
9699 | info_ptr += cu->header.addr_size; | |
9700 | else | |
9701 | info_ptr += cu->header.offset_size; | |
9702 | break; | |
36586728 TT |
9703 | case DW_FORM_GNU_ref_alt: |
9704 | info_ptr += cu->header.offset_size; | |
9705 | break; | |
ae411497 | 9706 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9707 | info_ptr += cu->header.addr_size; |
9708 | break; | |
9709 | case DW_FORM_data1: | |
9710 | case DW_FORM_ref1: | |
9711 | case DW_FORM_flag: | |
9712 | info_ptr += 1; | |
9713 | break; | |
2dc7f7b3 | 9714 | case DW_FORM_flag_present: |
43988095 | 9715 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9716 | break; |
4bb7a0a7 DJ |
9717 | case DW_FORM_data2: |
9718 | case DW_FORM_ref2: | |
9719 | info_ptr += 2; | |
9720 | break; | |
9721 | case DW_FORM_data4: | |
9722 | case DW_FORM_ref4: | |
9723 | info_ptr += 4; | |
9724 | break; | |
9725 | case DW_FORM_data8: | |
9726 | case DW_FORM_ref8: | |
55f1336d | 9727 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9728 | info_ptr += 8; |
9729 | break; | |
0224619f JK |
9730 | case DW_FORM_data16: |
9731 | info_ptr += 16; | |
9732 | break; | |
4bb7a0a7 | 9733 | case DW_FORM_string: |
9b1c24c8 | 9734 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9735 | info_ptr += bytes_read; |
9736 | break; | |
2dc7f7b3 | 9737 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9738 | case DW_FORM_strp: |
36586728 | 9739 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9740 | info_ptr += cu->header.offset_size; |
9741 | break; | |
2dc7f7b3 | 9742 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9743 | case DW_FORM_block: |
9744 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9745 | info_ptr += bytes_read; | |
9746 | break; | |
9747 | case DW_FORM_block1: | |
9748 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9749 | break; | |
9750 | case DW_FORM_block2: | |
9751 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9752 | break; | |
9753 | case DW_FORM_block4: | |
9754 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9755 | break; | |
9756 | case DW_FORM_sdata: | |
9757 | case DW_FORM_udata: | |
9758 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9759 | case DW_FORM_GNU_addr_index: |
9760 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9761 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9762 | break; |
9763 | case DW_FORM_indirect: | |
9764 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9765 | info_ptr += bytes_read; | |
9766 | /* We need to continue parsing from here, so just go back to | |
9767 | the top. */ | |
9768 | goto skip_attribute; | |
9769 | ||
9770 | default: | |
3e43a32a MS |
9771 | error (_("Dwarf Error: Cannot handle %s " |
9772 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9773 | dwarf_form_name (form), |
9774 | bfd_get_filename (abfd)); | |
9775 | } | |
9776 | } | |
9777 | ||
9778 | if (abbrev->has_children) | |
dee91e82 | 9779 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9780 | else |
9781 | return info_ptr; | |
9782 | } | |
9783 | ||
93311388 | 9784 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9785 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9786 | |
d521ce57 | 9787 | static const gdb_byte * |
dee91e82 DE |
9788 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9789 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9790 | const gdb_byte *info_ptr) |
91c24f0a DC |
9791 | { |
9792 | /* Do we know the sibling already? */ | |
72bf9492 | 9793 | |
91c24f0a DC |
9794 | if (orig_pdi->sibling) |
9795 | return orig_pdi->sibling; | |
9796 | ||
9797 | /* Are there any children to deal with? */ | |
9798 | ||
9799 | if (!orig_pdi->has_children) | |
9800 | return info_ptr; | |
9801 | ||
4bb7a0a7 | 9802 | /* Skip the children the long way. */ |
91c24f0a | 9803 | |
dee91e82 | 9804 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9805 | } |
9806 | ||
257e7a09 | 9807 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9808 | not NULL. */ |
c906108c SS |
9809 | |
9810 | static void | |
257e7a09 YQ |
9811 | dwarf2_read_symtab (struct partial_symtab *self, |
9812 | struct objfile *objfile) | |
c906108c | 9813 | { |
ed2dc618 SM |
9814 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9815 | = get_dwarf2_per_objfile (objfile); | |
9816 | ||
257e7a09 | 9817 | if (self->readin) |
c906108c | 9818 | { |
442e4d9c | 9819 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9820 | self->filename); |
442e4d9c YQ |
9821 | } |
9822 | else | |
9823 | { | |
9824 | if (info_verbose) | |
c906108c | 9825 | { |
442e4d9c | 9826 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9827 | self->filename); |
442e4d9c | 9828 | gdb_flush (gdb_stdout); |
c906108c | 9829 | } |
c906108c | 9830 | |
442e4d9c YQ |
9831 | /* If this psymtab is constructed from a debug-only objfile, the |
9832 | has_section_at_zero flag will not necessarily be correct. We | |
9833 | can get the correct value for this flag by looking at the data | |
9834 | associated with the (presumably stripped) associated objfile. */ | |
9835 | if (objfile->separate_debug_objfile_backlink) | |
9836 | { | |
9837 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9838 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9839 | |
442e4d9c YQ |
9840 | dwarf2_per_objfile->has_section_at_zero |
9841 | = dpo_backlink->has_section_at_zero; | |
9842 | } | |
b2ab525c | 9843 | |
442e4d9c | 9844 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9845 | |
257e7a09 | 9846 | psymtab_to_symtab_1 (self); |
c906108c | 9847 | |
442e4d9c YQ |
9848 | /* Finish up the debug error message. */ |
9849 | if (info_verbose) | |
9850 | printf_filtered (_("done.\n")); | |
c906108c | 9851 | } |
95554aad | 9852 | |
ed2dc618 | 9853 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9854 | } |
9cdd5dbd DE |
9855 | \f |
9856 | /* Reading in full CUs. */ | |
c906108c | 9857 | |
10b3939b DJ |
9858 | /* Add PER_CU to the queue. */ |
9859 | ||
9860 | static void | |
95554aad TT |
9861 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9862 | enum language pretend_language) | |
10b3939b DJ |
9863 | { |
9864 | struct dwarf2_queue_item *item; | |
9865 | ||
9866 | per_cu->queued = 1; | |
8d749320 | 9867 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9868 | item->per_cu = per_cu; |
95554aad | 9869 | item->pretend_language = pretend_language; |
10b3939b DJ |
9870 | item->next = NULL; |
9871 | ||
9872 | if (dwarf2_queue == NULL) | |
9873 | dwarf2_queue = item; | |
9874 | else | |
9875 | dwarf2_queue_tail->next = item; | |
9876 | ||
9877 | dwarf2_queue_tail = item; | |
9878 | } | |
9879 | ||
89e63ee4 DE |
9880 | /* If PER_CU is not yet queued, add it to the queue. |
9881 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9882 | dependency. | |
0907af0c | 9883 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9884 | meaning either PER_CU is already queued or it is already loaded. |
9885 | ||
9886 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9887 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9888 | |
9889 | static int | |
89e63ee4 | 9890 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9891 | struct dwarf2_per_cu_data *per_cu, |
9892 | enum language pretend_language) | |
9893 | { | |
9894 | /* We may arrive here during partial symbol reading, if we need full | |
9895 | DIEs to process an unusual case (e.g. template arguments). Do | |
9896 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9897 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9898 | { |
9899 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9900 | return 1; | |
9901 | return 0; | |
9902 | } | |
9903 | ||
9904 | /* Mark the dependence relation so that we don't flush PER_CU | |
9905 | too early. */ | |
89e63ee4 DE |
9906 | if (dependent_cu != NULL) |
9907 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9908 | |
9909 | /* If it's already on the queue, we have nothing to do. */ | |
9910 | if (per_cu->queued) | |
9911 | return 0; | |
9912 | ||
9913 | /* If the compilation unit is already loaded, just mark it as | |
9914 | used. */ | |
9915 | if (per_cu->cu != NULL) | |
9916 | { | |
9917 | per_cu->cu->last_used = 0; | |
9918 | return 0; | |
9919 | } | |
9920 | ||
9921 | /* Add it to the queue. */ | |
9922 | queue_comp_unit (per_cu, pretend_language); | |
9923 | ||
9924 | return 1; | |
9925 | } | |
9926 | ||
10b3939b DJ |
9927 | /* Process the queue. */ |
9928 | ||
9929 | static void | |
ed2dc618 | 9930 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9931 | { |
9932 | struct dwarf2_queue_item *item, *next_item; | |
9933 | ||
b4f54984 | 9934 | if (dwarf_read_debug) |
45cfd468 DE |
9935 | { |
9936 | fprintf_unfiltered (gdb_stdlog, | |
9937 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9938 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9939 | } |
9940 | ||
03dd20cc DJ |
9941 | /* The queue starts out with one item, but following a DIE reference |
9942 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9943 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9944 | { | |
cc12ce38 DE |
9945 | if ((dwarf2_per_objfile->using_index |
9946 | ? !item->per_cu->v.quick->compunit_symtab | |
9947 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9948 | /* Skip dummy CUs. */ | |
9949 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9950 | { |
9951 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9952 | unsigned int debug_print_threshold; |
247f5c4f | 9953 | char buf[100]; |
f4dc4d17 | 9954 | |
247f5c4f | 9955 | if (per_cu->is_debug_types) |
f4dc4d17 | 9956 | { |
247f5c4f DE |
9957 | struct signatured_type *sig_type = |
9958 | (struct signatured_type *) per_cu; | |
9959 | ||
9960 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 | 9961 | hex_string (sig_type->signature), |
9c541725 | 9962 | to_underlying (per_cu->sect_off)); |
73be47f5 DE |
9963 | /* There can be 100s of TUs. |
9964 | Only print them in verbose mode. */ | |
9965 | debug_print_threshold = 2; | |
f4dc4d17 | 9966 | } |
247f5c4f | 9967 | else |
73be47f5 | 9968 | { |
9c541725 PA |
9969 | sprintf (buf, "CU at offset 0x%x", |
9970 | to_underlying (per_cu->sect_off)); | |
73be47f5 DE |
9971 | debug_print_threshold = 1; |
9972 | } | |
247f5c4f | 9973 | |
b4f54984 | 9974 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9975 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9976 | |
9977 | if (per_cu->is_debug_types) | |
9978 | process_full_type_unit (per_cu, item->pretend_language); | |
9979 | else | |
9980 | process_full_comp_unit (per_cu, item->pretend_language); | |
9981 | ||
b4f54984 | 9982 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9983 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9984 | } |
10b3939b DJ |
9985 | |
9986 | item->per_cu->queued = 0; | |
9987 | next_item = item->next; | |
9988 | xfree (item); | |
9989 | } | |
9990 | ||
9991 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9992 | |
b4f54984 | 9993 | if (dwarf_read_debug) |
45cfd468 DE |
9994 | { |
9995 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9996 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9997 | } |
10b3939b DJ |
9998 | } |
9999 | ||
10b3939b DJ |
10000 | /* Read in full symbols for PST, and anything it depends on. */ |
10001 | ||
c906108c | 10002 | static void |
fba45db2 | 10003 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 10004 | { |
10b3939b | 10005 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
10006 | int i; |
10007 | ||
95554aad TT |
10008 | if (pst->readin) |
10009 | return; | |
10010 | ||
aaa75496 | 10011 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
10012 | if (!pst->dependencies[i]->readin |
10013 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
10014 | { |
10015 | /* Inform about additional files that need to be read in. */ | |
10016 | if (info_verbose) | |
10017 | { | |
a3f17187 | 10018 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
10019 | fputs_filtered (" ", gdb_stdout); |
10020 | wrap_here (""); | |
10021 | fputs_filtered ("and ", gdb_stdout); | |
10022 | wrap_here (""); | |
10023 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 10024 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
10025 | gdb_flush (gdb_stdout); |
10026 | } | |
10027 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
10028 | } | |
10029 | ||
9a3c8263 | 10030 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
10031 | |
10032 | if (per_cu == NULL) | |
aaa75496 JB |
10033 | { |
10034 | /* It's an include file, no symbols to read for it. | |
10035 | Everything is in the parent symtab. */ | |
10036 | pst->readin = 1; | |
10037 | return; | |
10038 | } | |
c906108c | 10039 | |
a0f42c21 | 10040 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
10041 | } |
10042 | ||
dee91e82 DE |
10043 | /* Trivial hash function for die_info: the hash value of a DIE |
10044 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 10045 | |
dee91e82 DE |
10046 | static hashval_t |
10047 | die_hash (const void *item) | |
10b3939b | 10048 | { |
9a3c8263 | 10049 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 10050 | |
9c541725 | 10051 | return to_underlying (die->sect_off); |
dee91e82 | 10052 | } |
63d06c5c | 10053 | |
dee91e82 DE |
10054 | /* Trivial comparison function for die_info structures: two DIEs |
10055 | are equal if they have the same offset. */ | |
98bfdba5 | 10056 | |
dee91e82 DE |
10057 | static int |
10058 | die_eq (const void *item_lhs, const void *item_rhs) | |
10059 | { | |
9a3c8263 SM |
10060 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
10061 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 10062 | |
9c541725 | 10063 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 10064 | } |
c906108c | 10065 | |
dee91e82 DE |
10066 | /* die_reader_func for load_full_comp_unit. |
10067 | This is identical to read_signatured_type_reader, | |
10068 | but is kept separate for now. */ | |
c906108c | 10069 | |
dee91e82 DE |
10070 | static void |
10071 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 10072 | const gdb_byte *info_ptr, |
dee91e82 DE |
10073 | struct die_info *comp_unit_die, |
10074 | int has_children, | |
10075 | void *data) | |
10076 | { | |
10077 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 10078 | enum language *language_ptr = (enum language *) data; |
6caca83c | 10079 | |
dee91e82 DE |
10080 | gdb_assert (cu->die_hash == NULL); |
10081 | cu->die_hash = | |
10082 | htab_create_alloc_ex (cu->header.length / 12, | |
10083 | die_hash, | |
10084 | die_eq, | |
10085 | NULL, | |
10086 | &cu->comp_unit_obstack, | |
10087 | hashtab_obstack_allocate, | |
10088 | dummy_obstack_deallocate); | |
e142c38c | 10089 | |
dee91e82 DE |
10090 | if (has_children) |
10091 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
10092 | &info_ptr, comp_unit_die); | |
10093 | cu->dies = comp_unit_die; | |
10094 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
10095 | |
10096 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 10097 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 10098 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
10099 | or we won't be able to build types correctly. |
10100 | Similarly, if we do not read the producer, we can not apply | |
10101 | producer-specific interpretation. */ | |
95554aad | 10102 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 10103 | } |
10b3939b | 10104 | |
dee91e82 | 10105 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 10106 | |
dee91e82 | 10107 | static void |
95554aad TT |
10108 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
10109 | enum language pretend_language) | |
dee91e82 | 10110 | { |
3019eac3 | 10111 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 10112 | |
f4dc4d17 DE |
10113 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
10114 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
10115 | } |
10116 | ||
3da10d80 KS |
10117 | /* Add a DIE to the delayed physname list. */ |
10118 | ||
10119 | static void | |
10120 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
10121 | const char *name, struct die_info *die, | |
10122 | struct dwarf2_cu *cu) | |
10123 | { | |
10124 | struct delayed_method_info mi; | |
10125 | mi.type = type; | |
10126 | mi.fnfield_index = fnfield_index; | |
10127 | mi.index = index; | |
10128 | mi.name = name; | |
10129 | mi.die = die; | |
c89b44cd | 10130 | cu->method_list.push_back (mi); |
3da10d80 KS |
10131 | } |
10132 | ||
3693fdb3 PA |
10133 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
10134 | "const" / "volatile". If so, decrements LEN by the length of the | |
10135 | modifier and return true. Otherwise return false. */ | |
10136 | ||
10137 | template<size_t N> | |
10138 | static bool | |
10139 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
10140 | { | |
10141 | size_t mod_len = sizeof (mod) - 1; | |
10142 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
10143 | { | |
10144 | len -= mod_len; | |
10145 | return true; | |
10146 | } | |
10147 | return false; | |
10148 | } | |
10149 | ||
3da10d80 KS |
10150 | /* Compute the physnames of any methods on the CU's method list. |
10151 | ||
10152 | The computation of method physnames is delayed in order to avoid the | |
10153 | (bad) condition that one of the method's formal parameters is of an as yet | |
10154 | incomplete type. */ | |
10155 | ||
10156 | static void | |
10157 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
10158 | { | |
3693fdb3 | 10159 | /* Only C++ delays computing physnames. */ |
c89b44cd | 10160 | if (cu->method_list.empty ()) |
3693fdb3 PA |
10161 | return; |
10162 | gdb_assert (cu->language == language_cplus); | |
10163 | ||
c89b44cd | 10164 | for (struct delayed_method_info &mi : cu->method_list) |
3da10d80 | 10165 | { |
1d06ead6 | 10166 | const char *physname; |
3da10d80 | 10167 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
10168 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
10169 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
10170 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 10171 | = physname ? physname : ""; |
3693fdb3 PA |
10172 | |
10173 | /* Since there's no tag to indicate whether a method is a | |
10174 | const/volatile overload, extract that information out of the | |
10175 | demangled name. */ | |
10176 | if (physname != NULL) | |
10177 | { | |
10178 | size_t len = strlen (physname); | |
10179 | ||
10180 | while (1) | |
10181 | { | |
10182 | if (physname[len] == ')') /* shortcut */ | |
10183 | break; | |
10184 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 10185 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 10186 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 10187 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
10188 | else |
10189 | break; | |
10190 | } | |
10191 | } | |
3da10d80 | 10192 | } |
c89b44cd TT |
10193 | |
10194 | /* The list is no longer needed. */ | |
10195 | cu->method_list.clear (); | |
3da10d80 KS |
10196 | } |
10197 | ||
a766d390 DE |
10198 | /* Go objects should be embedded in a DW_TAG_module DIE, |
10199 | and it's not clear if/how imported objects will appear. | |
10200 | To keep Go support simple until that's worked out, | |
10201 | go back through what we've read and create something usable. | |
10202 | We could do this while processing each DIE, and feels kinda cleaner, | |
10203 | but that way is more invasive. | |
10204 | This is to, for example, allow the user to type "p var" or "b main" | |
10205 | without having to specify the package name, and allow lookups | |
10206 | of module.object to work in contexts that use the expression | |
10207 | parser. */ | |
10208 | ||
10209 | static void | |
10210 | fixup_go_packaging (struct dwarf2_cu *cu) | |
10211 | { | |
10212 | char *package_name = NULL; | |
10213 | struct pending *list; | |
10214 | int i; | |
10215 | ||
10216 | for (list = global_symbols; list != NULL; list = list->next) | |
10217 | { | |
10218 | for (i = 0; i < list->nsyms; ++i) | |
10219 | { | |
10220 | struct symbol *sym = list->symbol[i]; | |
10221 | ||
10222 | if (SYMBOL_LANGUAGE (sym) == language_go | |
10223 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
10224 | { | |
10225 | char *this_package_name = go_symbol_package_name (sym); | |
10226 | ||
10227 | if (this_package_name == NULL) | |
10228 | continue; | |
10229 | if (package_name == NULL) | |
10230 | package_name = this_package_name; | |
10231 | else | |
10232 | { | |
518817b3 SM |
10233 | struct objfile *objfile |
10234 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 DE |
10235 | if (strcmp (package_name, this_package_name) != 0) |
10236 | complaint (&symfile_complaints, | |
10237 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
10238 | (symbol_symtab (sym) != NULL |
10239 | ? symtab_to_filename_for_display | |
10240 | (symbol_symtab (sym)) | |
e3b94546 | 10241 | : objfile_name (objfile)), |
a766d390 DE |
10242 | this_package_name, package_name); |
10243 | xfree (this_package_name); | |
10244 | } | |
10245 | } | |
10246 | } | |
10247 | } | |
10248 | ||
10249 | if (package_name != NULL) | |
10250 | { | |
518817b3 | 10251 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 10252 | const char *saved_package_name |
224c3ddb SM |
10253 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
10254 | package_name, | |
10255 | strlen (package_name)); | |
19f392bc UW |
10256 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
10257 | saved_package_name); | |
a766d390 DE |
10258 | struct symbol *sym; |
10259 | ||
10260 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10261 | ||
e623cf5d | 10262 | sym = allocate_symbol (objfile); |
f85f34ed | 10263 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
10264 | SYMBOL_SET_NAMES (sym, saved_package_name, |
10265 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
10266 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
10267 | e.g., "main" finds the "main" module and not C's main(). */ | |
10268 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 10269 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
10270 | SYMBOL_TYPE (sym) = type; |
10271 | ||
10272 | add_symbol_to_list (sym, &global_symbols); | |
10273 | ||
10274 | xfree (package_name); | |
10275 | } | |
10276 | } | |
10277 | ||
95554aad TT |
10278 | /* Return the symtab for PER_CU. This works properly regardless of |
10279 | whether we're using the index or psymtabs. */ | |
10280 | ||
43f3e411 DE |
10281 | static struct compunit_symtab * |
10282 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10283 | { |
ed2dc618 | 10284 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10285 | ? per_cu->v.quick->compunit_symtab |
10286 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10287 | } |
10288 | ||
10289 | /* A helper function for computing the list of all symbol tables | |
10290 | included by PER_CU. */ | |
10291 | ||
10292 | static void | |
43f3e411 | 10293 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10294 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10295 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10296 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10297 | { |
10298 | void **slot; | |
10299 | int ix; | |
43f3e411 | 10300 | struct compunit_symtab *cust; |
95554aad TT |
10301 | struct dwarf2_per_cu_data *iter; |
10302 | ||
10303 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10304 | if (*slot != NULL) | |
10305 | { | |
10306 | /* This inclusion and its children have been processed. */ | |
10307 | return; | |
10308 | } | |
10309 | ||
10310 | *slot = per_cu; | |
10311 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10312 | cust = get_compunit_symtab (per_cu); |
10313 | if (cust != NULL) | |
ec94af83 DE |
10314 | { |
10315 | /* If this is a type unit only add its symbol table if we haven't | |
10316 | seen it yet (type unit per_cu's can share symtabs). */ | |
10317 | if (per_cu->is_debug_types) | |
10318 | { | |
43f3e411 | 10319 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10320 | if (*slot == NULL) |
10321 | { | |
43f3e411 DE |
10322 | *slot = cust; |
10323 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10324 | if (cust->user == NULL) | |
10325 | cust->user = immediate_parent; | |
ec94af83 DE |
10326 | } |
10327 | } | |
10328 | else | |
f9125b6c | 10329 | { |
43f3e411 DE |
10330 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10331 | if (cust->user == NULL) | |
10332 | cust->user = immediate_parent; | |
f9125b6c | 10333 | } |
ec94af83 | 10334 | } |
95554aad TT |
10335 | |
10336 | for (ix = 0; | |
796a7ff8 | 10337 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10338 | ++ix) |
ec94af83 DE |
10339 | { |
10340 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10341 | all_type_symtabs, iter, cust); |
ec94af83 | 10342 | } |
95554aad TT |
10343 | } |
10344 | ||
43f3e411 | 10345 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10346 | PER_CU. */ |
10347 | ||
10348 | static void | |
43f3e411 | 10349 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10350 | { |
f4dc4d17 DE |
10351 | gdb_assert (! per_cu->is_debug_types); |
10352 | ||
796a7ff8 | 10353 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10354 | { |
10355 | int ix, len; | |
ec94af83 | 10356 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10357 | struct compunit_symtab *compunit_symtab_iter; |
10358 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10359 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10360 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10361 | |
10362 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10363 | if (cust == NULL) |
95554aad TT |
10364 | return; |
10365 | ||
10366 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10367 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10368 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10369 | NULL, xcalloc, xfree); | |
95554aad TT |
10370 | |
10371 | for (ix = 0; | |
796a7ff8 | 10372 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10373 | ix, per_cu_iter); |
95554aad | 10374 | ++ix) |
ec94af83 DE |
10375 | { |
10376 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10377 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10378 | cust); |
ec94af83 | 10379 | } |
95554aad | 10380 | |
ec94af83 | 10381 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10382 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10383 | cust->includes | |
ed2dc618 | 10384 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10385 | struct compunit_symtab *, len + 1); |
95554aad | 10386 | for (ix = 0; |
43f3e411 DE |
10387 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10388 | compunit_symtab_iter); | |
95554aad | 10389 | ++ix) |
43f3e411 DE |
10390 | cust->includes[ix] = compunit_symtab_iter; |
10391 | cust->includes[len] = NULL; | |
95554aad | 10392 | |
43f3e411 | 10393 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10394 | htab_delete (all_children); |
ec94af83 | 10395 | htab_delete (all_type_symtabs); |
95554aad TT |
10396 | } |
10397 | } | |
10398 | ||
10399 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10400 | read. */ | |
10401 | ||
10402 | static void | |
ed2dc618 | 10403 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
10404 | { |
10405 | int ix; | |
10406 | struct dwarf2_per_cu_data *iter; | |
10407 | ||
10408 | for (ix = 0; | |
10409 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
10410 | ix, iter); | |
10411 | ++ix) | |
f4dc4d17 DE |
10412 | { |
10413 | if (! iter->is_debug_types) | |
43f3e411 | 10414 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10415 | } |
95554aad TT |
10416 | |
10417 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
10418 | } | |
10419 | ||
9cdd5dbd | 10420 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10421 | already been loaded into memory. */ |
10422 | ||
10423 | static void | |
95554aad TT |
10424 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10425 | enum language pretend_language) | |
10b3939b | 10426 | { |
10b3939b | 10427 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10428 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10429 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10430 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10431 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10432 | struct compunit_symtab *cust; |
10b3939b | 10433 | CORE_ADDR baseaddr; |
4359dff1 | 10434 | struct block *static_block; |
3e29f34a | 10435 | CORE_ADDR addr; |
10b3939b DJ |
10436 | |
10437 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10438 | ||
10b3939b | 10439 | buildsym_init (); |
33c7c59d | 10440 | scoped_free_pendings free_pending; |
c89b44cd TT |
10441 | |
10442 | /* Clear the list here in case something was left over. */ | |
10443 | cu->method_list.clear (); | |
10b3939b DJ |
10444 | |
10445 | cu->list_in_scope = &file_symbols; | |
c906108c | 10446 | |
95554aad TT |
10447 | cu->language = pretend_language; |
10448 | cu->language_defn = language_def (cu->language); | |
10449 | ||
c906108c | 10450 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10451 | process_die (cu->dies, cu); |
c906108c | 10452 | |
a766d390 DE |
10453 | /* For now fudge the Go package. */ |
10454 | if (cu->language == language_go) | |
10455 | fixup_go_packaging (cu); | |
10456 | ||
3da10d80 KS |
10457 | /* Now that we have processed all the DIEs in the CU, all the types |
10458 | should be complete, and it should now be safe to compute all of the | |
10459 | physnames. */ | |
10460 | compute_delayed_physnames (cu); | |
3da10d80 | 10461 | |
fae299cd DC |
10462 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10463 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10464 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10465 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10466 | |
3e29f34a MR |
10467 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
10468 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
10469 | |
10470 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10471 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10472 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10473 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10474 | this comp unit. */ | |
10475 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10476 | ||
43f3e411 DE |
10477 | cust = end_symtab_from_static_block (static_block, |
10478 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 10479 | |
43f3e411 | 10480 | if (cust != NULL) |
c906108c | 10481 | { |
df15bd07 | 10482 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10483 | |
8be455d7 JK |
10484 | /* Set symtab language to language from DW_AT_language. If the |
10485 | compilation is from a C file generated by language preprocessors, do | |
10486 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10487 | if (!(cu->language == language_c |
40e3ad0e | 10488 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10489 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10490 | |
10491 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10492 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10493 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10494 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10495 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10496 | |
10497 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10498 | needed, it would be wrong due to missing DW_AT_producer there. | |
10499 | ||
10500 | Still one can confuse GDB by using non-standard GCC compilation | |
10501 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10502 | */ | |
ab260dad | 10503 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10504 | cust->locations_valid = 1; |
e0d00bc7 JK |
10505 | |
10506 | if (gcc_4_minor >= 5) | |
43f3e411 | 10507 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10508 | |
43f3e411 | 10509 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10510 | } |
9291a0cd TT |
10511 | |
10512 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10513 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10514 | else |
10515 | { | |
10516 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10517 | pst->compunit_symtab = cust; |
9291a0cd TT |
10518 | pst->readin = 1; |
10519 | } | |
c906108c | 10520 | |
95554aad TT |
10521 | /* Push it for inclusion processing later. */ |
10522 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
f4dc4d17 | 10523 | } |
45cfd468 | 10524 | |
f4dc4d17 DE |
10525 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10526 | already been loaded into memory. */ | |
10527 | ||
10528 | static void | |
10529 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10530 | enum language pretend_language) | |
10531 | { | |
10532 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10533 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10534 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10535 | struct compunit_symtab *cust; |
0186c6a7 DE |
10536 | struct signatured_type *sig_type; |
10537 | ||
10538 | gdb_assert (per_cu->is_debug_types); | |
10539 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
10540 | |
10541 | buildsym_init (); | |
33c7c59d | 10542 | scoped_free_pendings free_pending; |
c89b44cd TT |
10543 | |
10544 | /* Clear the list here in case something was left over. */ | |
10545 | cu->method_list.clear (); | |
f4dc4d17 DE |
10546 | |
10547 | cu->list_in_scope = &file_symbols; | |
10548 | ||
10549 | cu->language = pretend_language; | |
10550 | cu->language_defn = language_def (cu->language); | |
10551 | ||
10552 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10553 | process_die (cu->dies, cu); | |
10554 | ||
10555 | /* For now fudge the Go package. */ | |
10556 | if (cu->language == language_go) | |
10557 | fixup_go_packaging (cu); | |
10558 | ||
10559 | /* Now that we have processed all the DIEs in the CU, all the types | |
10560 | should be complete, and it should now be safe to compute all of the | |
10561 | physnames. */ | |
10562 | compute_delayed_physnames (cu); | |
f4dc4d17 DE |
10563 | |
10564 | /* TUs share symbol tables. | |
10565 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10566 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10567 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10568 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10569 | { |
43f3e411 DE |
10570 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
10571 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 10572 | |
43f3e411 | 10573 | if (cust != NULL) |
f4dc4d17 DE |
10574 | { |
10575 | /* Set symtab language to language from DW_AT_language. If the | |
10576 | compilation is from a C file generated by language preprocessors, | |
10577 | do not set the language if it was already deduced by | |
10578 | start_subfile. */ | |
43f3e411 DE |
10579 | if (!(cu->language == language_c |
10580 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10581 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10582 | } |
10583 | } | |
10584 | else | |
10585 | { | |
0ab9ce85 | 10586 | augment_type_symtab (); |
43f3e411 | 10587 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10588 | } |
10589 | ||
10590 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10591 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10592 | else |
10593 | { | |
10594 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10595 | pst->compunit_symtab = cust; |
f4dc4d17 | 10596 | pst->readin = 1; |
45cfd468 | 10597 | } |
c906108c SS |
10598 | } |
10599 | ||
95554aad TT |
10600 | /* Process an imported unit DIE. */ |
10601 | ||
10602 | static void | |
10603 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10604 | { | |
10605 | struct attribute *attr; | |
10606 | ||
f4dc4d17 DE |
10607 | /* For now we don't handle imported units in type units. */ |
10608 | if (cu->per_cu->is_debug_types) | |
10609 | { | |
10610 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10611 | " supported in type units [in module %s]"), | |
518817b3 | 10612 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10613 | } |
10614 | ||
95554aad TT |
10615 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10616 | if (attr != NULL) | |
10617 | { | |
9c541725 PA |
10618 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10619 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10620 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10621 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10622 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10623 | |
69d751e3 | 10624 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
10625 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
10626 | load_full_comp_unit (per_cu, cu->language); | |
10627 | ||
796a7ff8 | 10628 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10629 | per_cu); |
10630 | } | |
10631 | } | |
10632 | ||
4c8aa72d PA |
10633 | /* RAII object that represents a process_die scope: i.e., |
10634 | starts/finishes processing a DIE. */ | |
10635 | class process_die_scope | |
adde2bff | 10636 | { |
4c8aa72d PA |
10637 | public: |
10638 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10639 | : m_die (die), m_cu (cu) | |
10640 | { | |
10641 | /* We should only be processing DIEs not already in process. */ | |
10642 | gdb_assert (!m_die->in_process); | |
10643 | m_die->in_process = true; | |
10644 | } | |
8c3cb9fa | 10645 | |
4c8aa72d PA |
10646 | ~process_die_scope () |
10647 | { | |
10648 | m_die->in_process = false; | |
10649 | ||
10650 | /* If we're done processing the DIE for the CU that owns the line | |
10651 | header, we don't need the line header anymore. */ | |
10652 | if (m_cu->line_header_die_owner == m_die) | |
10653 | { | |
10654 | delete m_cu->line_header; | |
10655 | m_cu->line_header = NULL; | |
10656 | m_cu->line_header_die_owner = NULL; | |
10657 | } | |
10658 | } | |
10659 | ||
10660 | private: | |
10661 | die_info *m_die; | |
10662 | dwarf2_cu *m_cu; | |
10663 | }; | |
adde2bff | 10664 | |
c906108c SS |
10665 | /* Process a die and its children. */ |
10666 | ||
10667 | static void | |
e7c27a73 | 10668 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10669 | { |
4c8aa72d | 10670 | process_die_scope scope (die, cu); |
adde2bff | 10671 | |
c906108c SS |
10672 | switch (die->tag) |
10673 | { | |
10674 | case DW_TAG_padding: | |
10675 | break; | |
10676 | case DW_TAG_compile_unit: | |
95554aad | 10677 | case DW_TAG_partial_unit: |
e7c27a73 | 10678 | read_file_scope (die, cu); |
c906108c | 10679 | break; |
348e048f DE |
10680 | case DW_TAG_type_unit: |
10681 | read_type_unit_scope (die, cu); | |
10682 | break; | |
c906108c | 10683 | case DW_TAG_subprogram: |
c906108c | 10684 | case DW_TAG_inlined_subroutine: |
edb3359d | 10685 | read_func_scope (die, cu); |
c906108c SS |
10686 | break; |
10687 | case DW_TAG_lexical_block: | |
14898363 L |
10688 | case DW_TAG_try_block: |
10689 | case DW_TAG_catch_block: | |
e7c27a73 | 10690 | read_lexical_block_scope (die, cu); |
c906108c | 10691 | break; |
216f72a1 | 10692 | case DW_TAG_call_site: |
96408a79 SA |
10693 | case DW_TAG_GNU_call_site: |
10694 | read_call_site_scope (die, cu); | |
10695 | break; | |
c906108c | 10696 | case DW_TAG_class_type: |
680b30c7 | 10697 | case DW_TAG_interface_type: |
c906108c SS |
10698 | case DW_TAG_structure_type: |
10699 | case DW_TAG_union_type: | |
134d01f1 | 10700 | process_structure_scope (die, cu); |
c906108c SS |
10701 | break; |
10702 | case DW_TAG_enumeration_type: | |
134d01f1 | 10703 | process_enumeration_scope (die, cu); |
c906108c | 10704 | break; |
134d01f1 | 10705 | |
f792889a DJ |
10706 | /* These dies have a type, but processing them does not create |
10707 | a symbol or recurse to process the children. Therefore we can | |
10708 | read them on-demand through read_type_die. */ | |
c906108c | 10709 | case DW_TAG_subroutine_type: |
72019c9c | 10710 | case DW_TAG_set_type: |
c906108c | 10711 | case DW_TAG_array_type: |
c906108c | 10712 | case DW_TAG_pointer_type: |
c906108c | 10713 | case DW_TAG_ptr_to_member_type: |
c906108c | 10714 | case DW_TAG_reference_type: |
4297a3f0 | 10715 | case DW_TAG_rvalue_reference_type: |
c906108c | 10716 | case DW_TAG_string_type: |
c906108c | 10717 | break; |
134d01f1 | 10718 | |
c906108c | 10719 | case DW_TAG_base_type: |
a02abb62 | 10720 | case DW_TAG_subrange_type: |
cb249c71 | 10721 | case DW_TAG_typedef: |
134d01f1 DJ |
10722 | /* Add a typedef symbol for the type definition, if it has a |
10723 | DW_AT_name. */ | |
f792889a | 10724 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10725 | break; |
c906108c | 10726 | case DW_TAG_common_block: |
e7c27a73 | 10727 | read_common_block (die, cu); |
c906108c SS |
10728 | break; |
10729 | case DW_TAG_common_inclusion: | |
10730 | break; | |
d9fa45fe | 10731 | case DW_TAG_namespace: |
4d4ec4e5 | 10732 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 10733 | read_namespace (die, cu); |
d9fa45fe | 10734 | break; |
5d7cb8df | 10735 | case DW_TAG_module: |
4d4ec4e5 | 10736 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
10737 | read_module (die, cu); |
10738 | break; | |
d9fa45fe | 10739 | case DW_TAG_imported_declaration: |
74921315 KS |
10740 | cu->processing_has_namespace_info = 1; |
10741 | if (read_namespace_alias (die, cu)) | |
10742 | break; | |
10743 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 10744 | case DW_TAG_imported_module: |
4d4ec4e5 | 10745 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
10746 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10747 | || cu->language != language_fortran)) | |
10748 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
10749 | dwarf_tag_name (die->tag)); | |
10750 | read_import_statement (die, cu); | |
d9fa45fe | 10751 | break; |
95554aad TT |
10752 | |
10753 | case DW_TAG_imported_unit: | |
10754 | process_imported_unit_die (die, cu); | |
10755 | break; | |
10756 | ||
71a3c369 TT |
10757 | case DW_TAG_variable: |
10758 | read_variable (die, cu); | |
10759 | break; | |
10760 | ||
c906108c | 10761 | default: |
e7c27a73 | 10762 | new_symbol (die, NULL, cu); |
c906108c SS |
10763 | break; |
10764 | } | |
10765 | } | |
ca69b9e6 DE |
10766 | \f |
10767 | /* DWARF name computation. */ | |
c906108c | 10768 | |
94af9270 KS |
10769 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10770 | needs to have the name of the scope prepended to the name listed in the | |
10771 | die. */ | |
10772 | ||
10773 | static int | |
10774 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10775 | { | |
1c809c68 TT |
10776 | struct attribute *attr; |
10777 | ||
94af9270 KS |
10778 | switch (die->tag) |
10779 | { | |
10780 | case DW_TAG_namespace: | |
10781 | case DW_TAG_typedef: | |
10782 | case DW_TAG_class_type: | |
10783 | case DW_TAG_interface_type: | |
10784 | case DW_TAG_structure_type: | |
10785 | case DW_TAG_union_type: | |
10786 | case DW_TAG_enumeration_type: | |
10787 | case DW_TAG_enumerator: | |
10788 | case DW_TAG_subprogram: | |
08a76f8a | 10789 | case DW_TAG_inlined_subroutine: |
94af9270 | 10790 | case DW_TAG_member: |
74921315 | 10791 | case DW_TAG_imported_declaration: |
94af9270 KS |
10792 | return 1; |
10793 | ||
10794 | case DW_TAG_variable: | |
c2b0a229 | 10795 | case DW_TAG_constant: |
94af9270 KS |
10796 | /* We only need to prefix "globally" visible variables. These include |
10797 | any variable marked with DW_AT_external or any variable that | |
10798 | lives in a namespace. [Variables in anonymous namespaces | |
10799 | require prefixing, but they are not DW_AT_external.] */ | |
10800 | ||
10801 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10802 | { | |
10803 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10804 | |
94af9270 KS |
10805 | return die_needs_namespace (die_specification (die, &spec_cu), |
10806 | spec_cu); | |
10807 | } | |
10808 | ||
1c809c68 | 10809 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10810 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10811 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10812 | return 0; |
10813 | /* A variable in a lexical block of some kind does not need a | |
10814 | namespace, even though in C++ such variables may be external | |
10815 | and have a mangled name. */ | |
10816 | if (die->parent->tag == DW_TAG_lexical_block | |
10817 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10818 | || die->parent->tag == DW_TAG_catch_block |
10819 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10820 | return 0; |
10821 | return 1; | |
94af9270 KS |
10822 | |
10823 | default: | |
10824 | return 0; | |
10825 | } | |
10826 | } | |
10827 | ||
73b9be8b KS |
10828 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10829 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10830 | defined for the given DIE. */ | |
10831 | ||
10832 | static struct attribute * | |
10833 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10834 | { | |
10835 | struct attribute *attr; | |
10836 | ||
10837 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10838 | if (attr == NULL) | |
10839 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10840 | ||
10841 | return attr; | |
10842 | } | |
10843 | ||
10844 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10845 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10846 | defined for the given DIE. */ | |
10847 | ||
10848 | static const char * | |
10849 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10850 | { | |
10851 | const char *linkage_name; | |
10852 | ||
10853 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10854 | if (linkage_name == NULL) | |
10855 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10856 | ||
10857 | return linkage_name; | |
10858 | } | |
10859 | ||
94af9270 | 10860 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10861 | compute the physname for the object, which include a method's: |
9c37b5ae | 10862 | - formal parameters (C++), |
a766d390 | 10863 | - receiver type (Go), |
a766d390 DE |
10864 | |
10865 | The term "physname" is a bit confusing. | |
10866 | For C++, for example, it is the demangled name. | |
10867 | For Go, for example, it's the mangled name. | |
94af9270 | 10868 | |
af6b7be1 JB |
10869 | For Ada, return the DIE's linkage name rather than the fully qualified |
10870 | name. PHYSNAME is ignored.. | |
10871 | ||
94af9270 KS |
10872 | The result is allocated on the objfile_obstack and canonicalized. */ |
10873 | ||
10874 | static const char * | |
15d034d0 TT |
10875 | dwarf2_compute_name (const char *name, |
10876 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10877 | int physname) |
10878 | { | |
518817b3 | 10879 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10880 | |
94af9270 KS |
10881 | if (name == NULL) |
10882 | name = dwarf2_name (die, cu); | |
10883 | ||
2ee7123e DE |
10884 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10885 | but otherwise compute it by typename_concat inside GDB. | |
10886 | FIXME: Actually this is not really true, or at least not always true. | |
10887 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10888 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10889 | will set the demangled name to the result of dwarf2_full_name, and it is |
10890 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10891 | if (cu->language == language_ada |
10892 | || (cu->language == language_fortran && physname)) | |
10893 | { | |
10894 | /* For Ada unit, we prefer the linkage name over the name, as | |
10895 | the former contains the exported name, which the user expects | |
10896 | to be able to reference. Ideally, we want the user to be able | |
10897 | to reference this entity using either natural or linkage name, | |
10898 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10899 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10900 | |
2ee7123e DE |
10901 | if (linkage_name != NULL) |
10902 | return linkage_name; | |
f55ee35c JK |
10903 | } |
10904 | ||
94af9270 KS |
10905 | /* These are the only languages we know how to qualify names in. */ |
10906 | if (name != NULL | |
9c37b5ae | 10907 | && (cu->language == language_cplus |
c44af4eb TT |
10908 | || cu->language == language_fortran || cu->language == language_d |
10909 | || cu->language == language_rust)) | |
94af9270 KS |
10910 | { |
10911 | if (die_needs_namespace (die, cu)) | |
10912 | { | |
0d5cff50 | 10913 | const char *prefix; |
34a68019 | 10914 | const char *canonical_name = NULL; |
94af9270 | 10915 | |
d7e74731 PA |
10916 | string_file buf; |
10917 | ||
94af9270 | 10918 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10919 | if (*prefix != '\0') |
10920 | { | |
f55ee35c JK |
10921 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10922 | physname, cu); | |
9a619af0 | 10923 | |
d7e74731 | 10924 | buf.puts (prefixed_name); |
94af9270 KS |
10925 | xfree (prefixed_name); |
10926 | } | |
10927 | else | |
d7e74731 | 10928 | buf.puts (name); |
94af9270 | 10929 | |
98bfdba5 PA |
10930 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10931 | as children with DW_TAG_template_type_param or | |
10932 | DW_TAG_value_type_param. If the latter, add them to the name | |
10933 | here. If the name already has template parameters, then | |
10934 | skip this step; some versions of GCC emit both, and | |
10935 | it is more efficient to use the pre-computed name. | |
10936 | ||
10937 | Something to keep in mind about this process: it is very | |
10938 | unlikely, or in some cases downright impossible, to produce | |
10939 | something that will match the mangled name of a function. | |
10940 | If the definition of the function has the same debug info, | |
10941 | we should be able to match up with it anyway. But fallbacks | |
10942 | using the minimal symbol, for instance to find a method | |
10943 | implemented in a stripped copy of libstdc++, will not work. | |
10944 | If we do not have debug info for the definition, we will have to | |
10945 | match them up some other way. | |
10946 | ||
10947 | When we do name matching there is a related problem with function | |
10948 | templates; two instantiated function templates are allowed to | |
10949 | differ only by their return types, which we do not add here. */ | |
10950 | ||
10951 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10952 | { | |
10953 | struct attribute *attr; | |
10954 | struct die_info *child; | |
10955 | int first = 1; | |
10956 | ||
10957 | die->building_fullname = 1; | |
10958 | ||
10959 | for (child = die->child; child != NULL; child = child->sibling) | |
10960 | { | |
10961 | struct type *type; | |
12df843f | 10962 | LONGEST value; |
d521ce57 | 10963 | const gdb_byte *bytes; |
98bfdba5 PA |
10964 | struct dwarf2_locexpr_baton *baton; |
10965 | struct value *v; | |
10966 | ||
10967 | if (child->tag != DW_TAG_template_type_param | |
10968 | && child->tag != DW_TAG_template_value_param) | |
10969 | continue; | |
10970 | ||
10971 | if (first) | |
10972 | { | |
d7e74731 | 10973 | buf.puts ("<"); |
98bfdba5 PA |
10974 | first = 0; |
10975 | } | |
10976 | else | |
d7e74731 | 10977 | buf.puts (", "); |
98bfdba5 PA |
10978 | |
10979 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10980 | if (attr == NULL) | |
10981 | { | |
10982 | complaint (&symfile_complaints, | |
10983 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 10984 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10985 | continue; |
10986 | } | |
10987 | type = die_type (child, cu); | |
10988 | ||
10989 | if (child->tag == DW_TAG_template_type_param) | |
10990 | { | |
d7e74731 | 10991 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
10992 | continue; |
10993 | } | |
10994 | ||
10995 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10996 | if (attr == NULL) | |
10997 | { | |
10998 | complaint (&symfile_complaints, | |
3e43a32a MS |
10999 | _("template parameter missing " |
11000 | "DW_AT_const_value")); | |
d7e74731 | 11001 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
11002 | continue; |
11003 | } | |
11004 | ||
11005 | dwarf2_const_value_attr (attr, type, name, | |
11006 | &cu->comp_unit_obstack, cu, | |
11007 | &value, &bytes, &baton); | |
11008 | ||
11009 | if (TYPE_NOSIGN (type)) | |
11010 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
11011 | changed, this can use value_print instead. */ | |
d7e74731 | 11012 | c_printchar (value, type, &buf); |
98bfdba5 PA |
11013 | else |
11014 | { | |
11015 | struct value_print_options opts; | |
11016 | ||
11017 | if (baton != NULL) | |
11018 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
11019 | baton->data, | |
11020 | baton->size, | |
11021 | baton->per_cu); | |
11022 | else if (bytes != NULL) | |
11023 | { | |
11024 | v = allocate_value (type); | |
11025 | memcpy (value_contents_writeable (v), bytes, | |
11026 | TYPE_LENGTH (type)); | |
11027 | } | |
11028 | else | |
11029 | v = value_from_longest (type, value); | |
11030 | ||
3e43a32a MS |
11031 | /* Specify decimal so that we do not depend on |
11032 | the radix. */ | |
98bfdba5 PA |
11033 | get_formatted_print_options (&opts, 'd'); |
11034 | opts.raw = 1; | |
d7e74731 | 11035 | value_print (v, &buf, &opts); |
98bfdba5 PA |
11036 | release_value (v); |
11037 | value_free (v); | |
11038 | } | |
11039 | } | |
11040 | ||
11041 | die->building_fullname = 0; | |
11042 | ||
11043 | if (!first) | |
11044 | { | |
11045 | /* Close the argument list, with a space if necessary | |
11046 | (nested templates). */ | |
d7e74731 PA |
11047 | if (!buf.empty () && buf.string ().back () == '>') |
11048 | buf.puts (" >"); | |
98bfdba5 | 11049 | else |
d7e74731 | 11050 | buf.puts (">"); |
98bfdba5 PA |
11051 | } |
11052 | } | |
11053 | ||
9c37b5ae | 11054 | /* For C++ methods, append formal parameter type |
94af9270 | 11055 | information, if PHYSNAME. */ |
6e70227d | 11056 | |
94af9270 | 11057 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 11058 | && cu->language == language_cplus) |
94af9270 KS |
11059 | { |
11060 | struct type *type = read_type_die (die, cu); | |
11061 | ||
d7e74731 | 11062 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 11063 | &type_print_raw_options); |
94af9270 | 11064 | |
9c37b5ae | 11065 | if (cu->language == language_cplus) |
94af9270 | 11066 | { |
60430eff DJ |
11067 | /* Assume that an artificial first parameter is |
11068 | "this", but do not crash if it is not. RealView | |
11069 | marks unnamed (and thus unused) parameters as | |
11070 | artificial; there is no way to differentiate | |
11071 | the two cases. */ | |
94af9270 KS |
11072 | if (TYPE_NFIELDS (type) > 0 |
11073 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 11074 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
11075 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
11076 | 0)))) | |
d7e74731 | 11077 | buf.puts (" const"); |
94af9270 KS |
11078 | } |
11079 | } | |
11080 | ||
d7e74731 | 11081 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
11082 | |
11083 | if (cu->language == language_cplus) | |
34a68019 | 11084 | canonical_name |
322a8516 | 11085 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11086 | &objfile->per_bfd->storage_obstack); |
11087 | ||
11088 | /* If we only computed INTERMEDIATE_NAME, or if | |
11089 | INTERMEDIATE_NAME is already canonical, then we need to | |
11090 | copy it to the appropriate obstack. */ | |
322a8516 | 11091 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
11092 | name = ((const char *) |
11093 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
11094 | intermediate_name.c_str (), |
11095 | intermediate_name.length ())); | |
34a68019 TT |
11096 | else |
11097 | name = canonical_name; | |
94af9270 KS |
11098 | } |
11099 | } | |
11100 | ||
11101 | return name; | |
11102 | } | |
11103 | ||
0114d602 DJ |
11104 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11105 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11106 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11107 | not have a name. NAME may either be from a previous call to |
11108 | dwarf2_name or NULL. | |
11109 | ||
9c37b5ae | 11110 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11111 | |
11112 | static const char * | |
15d034d0 | 11113 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11114 | { |
94af9270 KS |
11115 | return dwarf2_compute_name (name, die, cu, 0); |
11116 | } | |
0114d602 | 11117 | |
94af9270 KS |
11118 | /* Construct a physname for the given DIE in CU. NAME may either be |
11119 | from a previous call to dwarf2_name or NULL. The result will be | |
11120 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11121 | name. | |
0114d602 | 11122 | |
9c37b5ae | 11123 | The output string will be canonicalized (if C++). */ |
0114d602 | 11124 | |
94af9270 | 11125 | static const char * |
15d034d0 | 11126 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11127 | { |
518817b3 | 11128 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11129 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11130 | int need_copy = 1; |
11131 | ||
11132 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11133 | on its own. */ | |
11134 | if (!die_needs_namespace (die, cu)) | |
11135 | return dwarf2_compute_name (name, die, cu, 1); | |
11136 | ||
73b9be8b | 11137 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11138 | |
e98c9e7c TT |
11139 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11140 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11141 | if (cu->language == language_rust && mangled != NULL | |
11142 | && strchr (mangled, '{') != NULL) | |
11143 | mangled = NULL; | |
11144 | ||
900e11f9 JK |
11145 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11146 | has computed. */ | |
791afaa2 | 11147 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11148 | if (mangled != NULL) |
900e11f9 | 11149 | { |
900e11f9 | 11150 | |
a766d390 DE |
11151 | if (cu->language == language_go) |
11152 | { | |
5e2db402 TT |
11153 | /* This is a lie, but we already lie to the caller new_symbol. |
11154 | new_symbol assumes we return the mangled name. | |
a766d390 | 11155 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11156 | } |
11157 | else | |
11158 | { | |
0eb876f5 JB |
11159 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11160 | their return type. It is easier for GDB users to search | |
11161 | for such functions as `name(params)' than `long name(params)'. | |
11162 | In such case the minimal symbol names do not match the full | |
11163 | symbol names but for template functions there is never a need | |
11164 | to look up their definition from their declaration so | |
11165 | the only disadvantage remains the minimal symbol variant | |
11166 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11167 | demangled.reset (gdb_demangle (mangled, |
11168 | (DMGL_PARAMS | DMGL_ANSI | |
11169 | | DMGL_RET_DROP))); | |
a766d390 | 11170 | } |
900e11f9 | 11171 | if (demangled) |
791afaa2 | 11172 | canon = demangled.get (); |
900e11f9 JK |
11173 | else |
11174 | { | |
11175 | canon = mangled; | |
11176 | need_copy = 0; | |
11177 | } | |
11178 | } | |
11179 | ||
11180 | if (canon == NULL || check_physname) | |
11181 | { | |
11182 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11183 | ||
11184 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11185 | { | |
11186 | /* It may not mean a bug in GDB. The compiler could also | |
11187 | compute DW_AT_linkage_name incorrectly. But in such case | |
11188 | GDB would need to be bug-to-bug compatible. */ | |
11189 | ||
11190 | complaint (&symfile_complaints, | |
11191 | _("Computed physname <%s> does not match demangled <%s> " | |
11192 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
9c541725 | 11193 | physname, canon, mangled, to_underlying (die->sect_off), |
4262abfb | 11194 | objfile_name (objfile)); |
900e11f9 JK |
11195 | |
11196 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11197 | is available here - over computed PHYSNAME. It is safer | |
11198 | against both buggy GDB and buggy compilers. */ | |
11199 | ||
11200 | retval = canon; | |
11201 | } | |
11202 | else | |
11203 | { | |
11204 | retval = physname; | |
11205 | need_copy = 0; | |
11206 | } | |
11207 | } | |
11208 | else | |
11209 | retval = canon; | |
11210 | ||
11211 | if (need_copy) | |
224c3ddb SM |
11212 | retval = ((const char *) |
11213 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11214 | retval, strlen (retval))); | |
900e11f9 | 11215 | |
900e11f9 | 11216 | return retval; |
0114d602 DJ |
11217 | } |
11218 | ||
74921315 KS |
11219 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11220 | a new symbol for it. | |
11221 | ||
11222 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11223 | ||
11224 | static int | |
11225 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11226 | { | |
11227 | struct attribute *attr; | |
11228 | ||
11229 | /* If the die does not have a name, this is not a namespace | |
11230 | alias. */ | |
11231 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11232 | if (attr != NULL) | |
11233 | { | |
11234 | int num; | |
11235 | struct die_info *d = die; | |
11236 | struct dwarf2_cu *imported_cu = cu; | |
11237 | ||
11238 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11239 | keep inspecting DIEs until we hit the underlying import. */ | |
11240 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11241 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11242 | { | |
11243 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11244 | if (attr == NULL) | |
11245 | break; | |
11246 | ||
11247 | d = follow_die_ref (d, attr, &imported_cu); | |
11248 | if (d->tag != DW_TAG_imported_declaration) | |
11249 | break; | |
11250 | } | |
11251 | ||
11252 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11253 | { | |
11254 | complaint (&symfile_complaints, | |
11255 | _("DIE at 0x%x has too many recursively imported " | |
9c541725 | 11256 | "declarations"), to_underlying (d->sect_off)); |
74921315 KS |
11257 | return 0; |
11258 | } | |
11259 | ||
11260 | if (attr != NULL) | |
11261 | { | |
11262 | struct type *type; | |
9c541725 | 11263 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11264 | |
9c541725 | 11265 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11266 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11267 | { | |
11268 | /* This declaration is a global namespace alias. Add | |
11269 | a symbol for it whose type is the aliased namespace. */ | |
11270 | new_symbol (die, type, cu); | |
11271 | return 1; | |
11272 | } | |
11273 | } | |
11274 | } | |
11275 | ||
11276 | return 0; | |
11277 | } | |
11278 | ||
22cee43f PMR |
11279 | /* Return the using directives repository (global or local?) to use in the |
11280 | current context for LANGUAGE. | |
11281 | ||
11282 | For Ada, imported declarations can materialize renamings, which *may* be | |
11283 | global. However it is impossible (for now?) in DWARF to distinguish | |
11284 | "external" imported declarations and "static" ones. As all imported | |
11285 | declarations seem to be static in all other languages, make them all CU-wide | |
11286 | global only in Ada. */ | |
11287 | ||
11288 | static struct using_direct ** | |
11289 | using_directives (enum language language) | |
11290 | { | |
11291 | if (language == language_ada && context_stack_depth == 0) | |
11292 | return &global_using_directives; | |
11293 | else | |
11294 | return &local_using_directives; | |
11295 | } | |
11296 | ||
27aa8d6a SW |
11297 | /* Read the import statement specified by the given die and record it. */ |
11298 | ||
11299 | static void | |
11300 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11301 | { | |
518817b3 | 11302 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11303 | struct attribute *import_attr; |
32019081 | 11304 | struct die_info *imported_die, *child_die; |
de4affc9 | 11305 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11306 | const char *imported_name; |
794684b6 | 11307 | const char *imported_name_prefix; |
13387711 SW |
11308 | const char *canonical_name; |
11309 | const char *import_alias; | |
11310 | const char *imported_declaration = NULL; | |
794684b6 | 11311 | const char *import_prefix; |
eb1e02fd | 11312 | std::vector<const char *> excludes; |
13387711 | 11313 | |
27aa8d6a SW |
11314 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11315 | if (import_attr == NULL) | |
11316 | { | |
11317 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11318 | dwarf_tag_name (die->tag)); | |
11319 | return; | |
11320 | } | |
11321 | ||
de4affc9 CC |
11322 | imported_cu = cu; |
11323 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11324 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11325 | if (imported_name == NULL) |
11326 | { | |
11327 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11328 | ||
11329 | The import in the following code: | |
11330 | namespace A | |
11331 | { | |
11332 | typedef int B; | |
11333 | } | |
11334 | ||
11335 | int main () | |
11336 | { | |
11337 | using A::B; | |
11338 | B b; | |
11339 | return b; | |
11340 | } | |
11341 | ||
11342 | ... | |
11343 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11344 | <52> DW_AT_decl_file : 1 | |
11345 | <53> DW_AT_decl_line : 6 | |
11346 | <54> DW_AT_import : <0x75> | |
11347 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11348 | <59> DW_AT_name : B | |
11349 | <5b> DW_AT_decl_file : 1 | |
11350 | <5c> DW_AT_decl_line : 2 | |
11351 | <5d> DW_AT_type : <0x6e> | |
11352 | ... | |
11353 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11354 | <76> DW_AT_byte_size : 4 | |
11355 | <77> DW_AT_encoding : 5 (signed) | |
11356 | ||
11357 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11358 | This case will be ignored until the gcc bug is fixed. */ | |
11359 | return; | |
11360 | } | |
11361 | ||
82856980 SW |
11362 | /* Figure out the local name after import. */ |
11363 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11364 | |
794684b6 SW |
11365 | /* Figure out where the statement is being imported to. */ |
11366 | import_prefix = determine_prefix (die, cu); | |
11367 | ||
11368 | /* Figure out what the scope of the imported die is and prepend it | |
11369 | to the name of the imported die. */ | |
de4affc9 | 11370 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11371 | |
f55ee35c JK |
11372 | if (imported_die->tag != DW_TAG_namespace |
11373 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11374 | { |
13387711 SW |
11375 | imported_declaration = imported_name; |
11376 | canonical_name = imported_name_prefix; | |
794684b6 | 11377 | } |
13387711 | 11378 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11379 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11380 | imported_name_prefix, |
11381 | (cu->language == language_d ? "." : "::"), | |
11382 | imported_name, (char *) NULL); | |
13387711 SW |
11383 | else |
11384 | canonical_name = imported_name; | |
794684b6 | 11385 | |
32019081 JK |
11386 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11387 | for (child_die = die->child; child_die && child_die->tag; | |
11388 | child_die = sibling_die (child_die)) | |
11389 | { | |
11390 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11391 | represented by an imported module entry with an import attribute | |
11392 | referring to the module and owned entries corresponding to those | |
11393 | entities that are renamed as part of being imported. */ | |
11394 | ||
11395 | if (child_die->tag != DW_TAG_imported_declaration) | |
11396 | { | |
11397 | complaint (&symfile_complaints, | |
11398 | _("child DW_TAG_imported_declaration expected " | |
11399 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 11400 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
32019081 JK |
11401 | continue; |
11402 | } | |
11403 | ||
11404 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11405 | if (import_attr == NULL) | |
11406 | { | |
11407 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11408 | dwarf_tag_name (child_die->tag)); | |
11409 | continue; | |
11410 | } | |
11411 | ||
11412 | imported_cu = cu; | |
11413 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11414 | &imported_cu); | |
11415 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11416 | if (imported_name == NULL) | |
11417 | { | |
11418 | complaint (&symfile_complaints, | |
11419 | _("child DW_TAG_imported_declaration has unknown " | |
11420 | "imported name - DIE at 0x%x [in module %s]"), | |
9c541725 | 11421 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
32019081 JK |
11422 | continue; |
11423 | } | |
11424 | ||
eb1e02fd | 11425 | excludes.push_back (imported_name); |
32019081 JK |
11426 | |
11427 | process_die (child_die, cu); | |
11428 | } | |
11429 | ||
22cee43f PMR |
11430 | add_using_directive (using_directives (cu->language), |
11431 | import_prefix, | |
11432 | canonical_name, | |
11433 | import_alias, | |
11434 | imported_declaration, | |
11435 | excludes, | |
11436 | 0, | |
11437 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11438 | } |
11439 | ||
5230b05a WT |
11440 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11441 | types, but gives them a size of zero. Starting with version 14, | |
11442 | ICC is compatible with GCC. */ | |
11443 | ||
11444 | static int | |
11445 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11446 | { | |
11447 | if (!cu->checked_producer) | |
11448 | check_producer (cu); | |
11449 | ||
11450 | return cu->producer_is_icc_lt_14; | |
11451 | } | |
11452 | ||
1b80a9fa JK |
11453 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11454 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11455 | this, it was first present in GCC release 4.3.0. */ | |
11456 | ||
11457 | static int | |
11458 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11459 | { | |
11460 | if (!cu->checked_producer) | |
11461 | check_producer (cu); | |
11462 | ||
11463 | return cu->producer_is_gcc_lt_4_3; | |
11464 | } | |
11465 | ||
d721ba37 PA |
11466 | static file_and_directory |
11467 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11468 | { |
d721ba37 PA |
11469 | file_and_directory res; |
11470 | ||
9291a0cd TT |
11471 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11472 | is not a source language identifier. */ | |
d721ba37 PA |
11473 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11474 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11475 | |
d721ba37 PA |
11476 | if (res.comp_dir == NULL |
11477 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11478 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11479 | { |
d721ba37 PA |
11480 | res.comp_dir_storage = ldirname (res.name); |
11481 | if (!res.comp_dir_storage.empty ()) | |
11482 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11483 | } |
d721ba37 | 11484 | if (res.comp_dir != NULL) |
9291a0cd TT |
11485 | { |
11486 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11487 | directory, get rid of it. */ | |
d721ba37 | 11488 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11489 | |
d721ba37 PA |
11490 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11491 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11492 | } |
11493 | ||
d721ba37 PA |
11494 | if (res.name == NULL) |
11495 | res.name = "<unknown>"; | |
11496 | ||
11497 | return res; | |
9291a0cd TT |
11498 | } |
11499 | ||
f4dc4d17 DE |
11500 | /* Handle DW_AT_stmt_list for a compilation unit. |
11501 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11502 | COMP_DIR is the compilation directory. LOWPC is passed to |
11503 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11504 | |
11505 | static void | |
11506 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11507 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11508 | { |
518817b3 SM |
11509 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11510 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11511 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11512 | struct attribute *attr; |
527f3840 JK |
11513 | struct line_header line_header_local; |
11514 | hashval_t line_header_local_hash; | |
527f3840 JK |
11515 | void **slot; |
11516 | int decode_mapping; | |
2ab95328 | 11517 | |
f4dc4d17 DE |
11518 | gdb_assert (! cu->per_cu->is_debug_types); |
11519 | ||
2ab95328 | 11520 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11521 | if (attr == NULL) |
11522 | return; | |
11523 | ||
9c541725 | 11524 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11525 | |
11526 | /* The line header hash table is only created if needed (it exists to | |
11527 | prevent redundant reading of the line table for partial_units). | |
11528 | If we're given a partial_unit, we'll need it. If we're given a | |
11529 | compile_unit, then use the line header hash table if it's already | |
11530 | created, but don't create one just yet. */ | |
11531 | ||
11532 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11533 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11534 | { |
527f3840 JK |
11535 | dwarf2_per_objfile->line_header_hash |
11536 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11537 | line_header_eq_voidp, | |
11538 | free_line_header_voidp, | |
11539 | &objfile->objfile_obstack, | |
11540 | hashtab_obstack_allocate, | |
11541 | dummy_obstack_deallocate); | |
11542 | } | |
2ab95328 | 11543 | |
9c541725 | 11544 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11545 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11546 | line_header_local_hash = line_header_hash (&line_header_local); | |
11547 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11548 | { | |
11549 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11550 | &line_header_local, | |
11551 | line_header_local_hash, NO_INSERT); | |
11552 | ||
11553 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11554 | is not present in *SLOT (since if there is something in *SLOT then | |
11555 | it will be for a partial_unit). */ | |
11556 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11557 | { |
527f3840 | 11558 | gdb_assert (*slot != NULL); |
9a3c8263 | 11559 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11560 | return; |
dee91e82 | 11561 | } |
2ab95328 | 11562 | } |
527f3840 JK |
11563 | |
11564 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11565 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11566 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11567 | if (lh == NULL) | |
527f3840 | 11568 | return; |
4c8aa72d PA |
11569 | |
11570 | cu->line_header = lh.release (); | |
11571 | cu->line_header_die_owner = die; | |
527f3840 JK |
11572 | |
11573 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11574 | slot = NULL; | |
11575 | else | |
11576 | { | |
11577 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11578 | &line_header_local, | |
11579 | line_header_local_hash, INSERT); | |
11580 | gdb_assert (slot != NULL); | |
11581 | } | |
11582 | if (slot != NULL && *slot == NULL) | |
11583 | { | |
11584 | /* This newly decoded line number information unit will be owned | |
11585 | by line_header_hash hash table. */ | |
11586 | *slot = cu->line_header; | |
4c8aa72d | 11587 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11588 | } |
11589 | else | |
11590 | { | |
11591 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11592 | may be already used by multiple CUs. Create only temporary decoded | |
11593 | line_header for this CU - it may happen at most once for each line | |
11594 | number information unit. And if we're not using line_header_hash | |
11595 | then this is what we want as well. */ | |
11596 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11597 | } |
11598 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11599 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11600 | decode_mapping); | |
fff8551c | 11601 | |
2ab95328 TT |
11602 | } |
11603 | ||
95554aad | 11604 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11605 | |
c906108c | 11606 | static void |
e7c27a73 | 11607 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11608 | { |
518817b3 SM |
11609 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11610 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11611 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11612 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11613 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11614 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11615 | struct attribute *attr; | |
c906108c | 11616 | struct die_info *child_die; |
e142c38c | 11617 | CORE_ADDR baseaddr; |
6e70227d | 11618 | |
e142c38c | 11619 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11620 | |
fae299cd | 11621 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11622 | |
11623 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11624 | from finish_block. */ | |
2acceee2 | 11625 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11626 | lowpc = highpc; |
3e29f34a | 11627 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11628 | |
d721ba37 | 11629 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11630 | |
95554aad | 11631 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 11632 | |
f4b8a18d KW |
11633 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11634 | standardised yet. As a workaround for the language detection we fall | |
11635 | back to the DW_AT_producer string. */ | |
11636 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11637 | cu->language = language_opencl; | |
11638 | ||
3019eac3 DE |
11639 | /* Similar hack for Go. */ |
11640 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11641 | set_cu_language (DW_LANG_Go, cu); | |
11642 | ||
d721ba37 | 11643 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11644 | |
11645 | /* Decode line number information if present. We do this before | |
11646 | processing child DIEs, so that the line header table is available | |
11647 | for DW_AT_decl_file. */ | |
d721ba37 | 11648 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11649 | |
11650 | /* Process all dies in compilation unit. */ | |
11651 | if (die->child != NULL) | |
11652 | { | |
11653 | child_die = die->child; | |
11654 | while (child_die && child_die->tag) | |
11655 | { | |
11656 | process_die (child_die, cu); | |
11657 | child_die = sibling_die (child_die); | |
11658 | } | |
11659 | } | |
11660 | ||
11661 | /* Decode macro information, if present. Dwarf 2 macro information | |
11662 | refers to information in the line number info statement program | |
11663 | header, so we can only read it if we've read the header | |
11664 | successfully. */ | |
0af92d60 JK |
11665 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11666 | if (attr == NULL) | |
11667 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11668 | if (attr && cu->line_header) |
11669 | { | |
11670 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
11671 | complaint (&symfile_complaints, | |
0af92d60 | 11672 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11673 | |
43f3e411 | 11674 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11675 | } |
11676 | else | |
11677 | { | |
11678 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11679 | if (attr && cu->line_header) | |
11680 | { | |
11681 | unsigned int macro_offset = DW_UNSND (attr); | |
11682 | ||
43f3e411 | 11683 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11684 | } |
11685 | } | |
3019eac3 DE |
11686 | } |
11687 | ||
f4dc4d17 DE |
11688 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11689 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11690 | symtabs with another TU and the symtabs have already been created | |
11691 | then restore those symtabs in the line header. | |
11692 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11693 | |
11694 | static void | |
f4dc4d17 | 11695 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11696 | { |
f4dc4d17 DE |
11697 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11698 | struct type_unit_group *tu_group; | |
11699 | int first_time; | |
3019eac3 | 11700 | struct attribute *attr; |
9c541725 | 11701 | unsigned int i; |
0186c6a7 | 11702 | struct signatured_type *sig_type; |
3019eac3 | 11703 | |
f4dc4d17 | 11704 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11705 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11706 | |
f4dc4d17 | 11707 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11708 | |
f4dc4d17 | 11709 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11710 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11711 | if (sig_type->type_unit_group == NULL) |
11712 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11713 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11714 | |
11715 | /* If we've already processed this stmt_list there's no real need to | |
11716 | do it again, we could fake it and just recreate the part we need | |
11717 | (file name,index -> symtab mapping). If data shows this optimization | |
11718 | is useful we can do it then. */ | |
43f3e411 | 11719 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11720 | |
11721 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11722 | debug info. */ | |
fff8551c | 11723 | line_header_up lh; |
f4dc4d17 | 11724 | if (attr != NULL) |
3019eac3 | 11725 | { |
9c541725 | 11726 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11727 | lh = dwarf_decode_line_header (line_offset, cu); |
11728 | } | |
11729 | if (lh == NULL) | |
11730 | { | |
11731 | if (first_time) | |
11732 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11733 | else | |
11734 | { | |
11735 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 11736 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11737 | } |
f4dc4d17 | 11738 | return; |
3019eac3 DE |
11739 | } |
11740 | ||
4c8aa72d PA |
11741 | cu->line_header = lh.release (); |
11742 | cu->line_header_die_owner = die; | |
3019eac3 | 11743 | |
f4dc4d17 DE |
11744 | if (first_time) |
11745 | { | |
43f3e411 | 11746 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11747 | |
1fd60fc0 DE |
11748 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11749 | still initializing it, and our caller (a few levels up) | |
11750 | process_full_type_unit still needs to know if this is the first | |
11751 | time. */ | |
11752 | ||
4c8aa72d PA |
11753 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11754 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11755 | cu->line_header->file_names.size ()); | |
3019eac3 | 11756 | |
4c8aa72d | 11757 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11758 | { |
4c8aa72d | 11759 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11760 | |
4c8aa72d | 11761 | dwarf2_start_subfile (fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11762 | |
f4dc4d17 DE |
11763 | if (current_subfile->symtab == NULL) |
11764 | { | |
4c8aa72d PA |
11765 | /* NOTE: start_subfile will recognize when it's been |
11766 | passed a file it has already seen. So we can't | |
11767 | assume there's a simple mapping from | |
11768 | cu->line_header->file_names to subfiles, plus | |
11769 | cu->line_header->file_names may contain dups. */ | |
43f3e411 DE |
11770 | current_subfile->symtab |
11771 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
11772 | } |
11773 | ||
8c43009f PA |
11774 | fe.symtab = current_subfile->symtab; |
11775 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
11776 | } |
11777 | } | |
11778 | else | |
3019eac3 | 11779 | { |
0ab9ce85 | 11780 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11781 | |
4c8aa72d | 11782 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11783 | { |
4c8aa72d | 11784 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11785 | |
4c8aa72d | 11786 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11787 | } |
3019eac3 DE |
11788 | } |
11789 | ||
f4dc4d17 DE |
11790 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11791 | so they don't have a "real" (so to speak) symtab anyway. | |
11792 | There is later code that will assign the main symtab to all symbols | |
11793 | that don't have one. We need to handle the case of a symbol with a | |
11794 | missing symtab (DW_AT_decl_file) anyway. */ | |
11795 | } | |
3019eac3 | 11796 | |
f4dc4d17 DE |
11797 | /* Process DW_TAG_type_unit. |
11798 | For TUs we want to skip the first top level sibling if it's not the | |
11799 | actual type being defined by this TU. In this case the first top | |
11800 | level sibling is there to provide context only. */ | |
3019eac3 | 11801 | |
f4dc4d17 DE |
11802 | static void |
11803 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11804 | { | |
11805 | struct die_info *child_die; | |
3019eac3 | 11806 | |
f4dc4d17 DE |
11807 | prepare_one_comp_unit (cu, die, language_minimal); |
11808 | ||
11809 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11810 | We do this before processing child DIEs, so that the line header table | |
11811 | is available for DW_AT_decl_file. */ | |
11812 | setup_type_unit_groups (die, cu); | |
11813 | ||
11814 | if (die->child != NULL) | |
11815 | { | |
11816 | child_die = die->child; | |
11817 | while (child_die && child_die->tag) | |
11818 | { | |
11819 | process_die (child_die, cu); | |
11820 | child_die = sibling_die (child_die); | |
11821 | } | |
11822 | } | |
3019eac3 DE |
11823 | } |
11824 | \f | |
80626a55 DE |
11825 | /* DWO/DWP files. |
11826 | ||
11827 | http://gcc.gnu.org/wiki/DebugFission | |
11828 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11829 | ||
11830 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11831 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11832 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11833 | |
11834 | static hashval_t | |
11835 | hash_dwo_file (const void *item) | |
11836 | { | |
9a3c8263 | 11837 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11838 | hashval_t hash; |
3019eac3 | 11839 | |
a2ce51a0 DE |
11840 | hash = htab_hash_string (dwo_file->dwo_name); |
11841 | if (dwo_file->comp_dir != NULL) | |
11842 | hash += htab_hash_string (dwo_file->comp_dir); | |
11843 | return hash; | |
3019eac3 DE |
11844 | } |
11845 | ||
11846 | static int | |
11847 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11848 | { | |
9a3c8263 SM |
11849 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11850 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11851 | |
a2ce51a0 DE |
11852 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11853 | return 0; | |
11854 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11855 | return lhs->comp_dir == rhs->comp_dir; | |
11856 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11857 | } |
11858 | ||
11859 | /* Allocate a hash table for DWO files. */ | |
11860 | ||
11861 | static htab_t | |
ed2dc618 | 11862 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11863 | { |
3019eac3 DE |
11864 | return htab_create_alloc_ex (41, |
11865 | hash_dwo_file, | |
11866 | eq_dwo_file, | |
11867 | NULL, | |
11868 | &objfile->objfile_obstack, | |
11869 | hashtab_obstack_allocate, | |
11870 | dummy_obstack_deallocate); | |
11871 | } | |
11872 | ||
80626a55 DE |
11873 | /* Lookup DWO file DWO_NAME. */ |
11874 | ||
11875 | static void ** | |
ed2dc618 SM |
11876 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11877 | const char *dwo_name, | |
11878 | const char *comp_dir) | |
80626a55 DE |
11879 | { |
11880 | struct dwo_file find_entry; | |
11881 | void **slot; | |
11882 | ||
11883 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11884 | dwarf2_per_objfile->dwo_files |
11885 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11886 | |
11887 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11888 | find_entry.dwo_name = dwo_name; |
11889 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11890 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11891 | ||
11892 | return slot; | |
11893 | } | |
11894 | ||
3019eac3 DE |
11895 | static hashval_t |
11896 | hash_dwo_unit (const void *item) | |
11897 | { | |
9a3c8263 | 11898 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11899 | |
11900 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11901 | return dwo_unit->signature; | |
11902 | } | |
11903 | ||
11904 | static int | |
11905 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11906 | { | |
9a3c8263 SM |
11907 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11908 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11909 | |
11910 | /* The signature is assumed to be unique within the DWO file. | |
11911 | So while object file CU dwo_id's always have the value zero, | |
11912 | that's OK, assuming each object file DWO file has only one CU, | |
11913 | and that's the rule for now. */ | |
11914 | return lhs->signature == rhs->signature; | |
11915 | } | |
11916 | ||
11917 | /* Allocate a hash table for DWO CUs,TUs. | |
11918 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11919 | ||
11920 | static htab_t | |
11921 | allocate_dwo_unit_table (struct objfile *objfile) | |
11922 | { | |
11923 | /* Start out with a pretty small number. | |
11924 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11925 | return htab_create_alloc_ex (3, | |
11926 | hash_dwo_unit, | |
11927 | eq_dwo_unit, | |
11928 | NULL, | |
11929 | &objfile->objfile_obstack, | |
11930 | hashtab_obstack_allocate, | |
11931 | dummy_obstack_deallocate); | |
11932 | } | |
11933 | ||
80626a55 | 11934 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11935 | |
19c3d4c9 | 11936 | struct create_dwo_cu_data |
3019eac3 DE |
11937 | { |
11938 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11939 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11940 | }; |
11941 | ||
19c3d4c9 | 11942 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11943 | |
11944 | static void | |
19c3d4c9 DE |
11945 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11946 | const gdb_byte *info_ptr, | |
11947 | struct die_info *comp_unit_die, | |
11948 | int has_children, | |
11949 | void *datap) | |
3019eac3 DE |
11950 | { |
11951 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11952 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11953 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11954 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11955 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11956 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11957 | struct attribute *attr; |
3019eac3 DE |
11958 | |
11959 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11960 | if (attr == NULL) | |
11961 | { | |
19c3d4c9 DE |
11962 | complaint (&symfile_complaints, |
11963 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
11964 | " its dwo_id [in module %s]"), | |
9c541725 | 11965 | to_underlying (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11966 | return; |
11967 | } | |
11968 | ||
3019eac3 DE |
11969 | dwo_unit->dwo_file = dwo_file; |
11970 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11971 | dwo_unit->section = section; |
9c541725 | 11972 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11973 | dwo_unit->length = cu->per_cu->length; |
11974 | ||
b4f54984 | 11975 | if (dwarf_read_debug) |
4031ecc5 | 11976 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9c541725 PA |
11977 | to_underlying (sect_off), |
11978 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11979 | } |
11980 | ||
33c5cd75 | 11981 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11982 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11983 | |
33c5cd75 | 11984 | static void |
ed2dc618 SM |
11985 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11986 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11987 | htab_t &cus_htab) |
3019eac3 DE |
11988 | { |
11989 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11990 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11991 | |
33c5cd75 DB |
11992 | dwarf2_read_section (objfile, §ion); |
11993 | info_ptr = section.buffer; | |
3019eac3 DE |
11994 | |
11995 | if (info_ptr == NULL) | |
33c5cd75 | 11996 | return; |
3019eac3 | 11997 | |
b4f54984 | 11998 | if (dwarf_read_debug) |
19c3d4c9 DE |
11999 | { |
12000 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
12001 | get_section_name (§ion), |
12002 | get_section_file_name (§ion)); | |
19c3d4c9 | 12003 | } |
3019eac3 | 12004 | |
33c5cd75 | 12005 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
12006 | while (info_ptr < end_ptr) |
12007 | { | |
12008 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
12009 | struct create_dwo_cu_data create_dwo_cu_data; |
12010 | struct dwo_unit *dwo_unit; | |
12011 | void **slot; | |
12012 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 12013 | |
19c3d4c9 DE |
12014 | memset (&create_dwo_cu_data.dwo_unit, 0, |
12015 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 12016 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 12017 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 12018 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
12019 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
12020 | per_cu.section = §ion; | |
c5ed0576 | 12021 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
12022 | |
12023 | init_cutu_and_read_dies_no_follow ( | |
12024 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
12025 | info_ptr += per_cu.length; | |
12026 | ||
12027 | // If the unit could not be parsed, skip it. | |
12028 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
12029 | continue; | |
3019eac3 | 12030 | |
33c5cd75 DB |
12031 | if (cus_htab == NULL) |
12032 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 12033 | |
33c5cd75 DB |
12034 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
12035 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
12036 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
12037 | gdb_assert (slot != NULL); | |
12038 | if (*slot != NULL) | |
19c3d4c9 | 12039 | { |
33c5cd75 DB |
12040 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
12041 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 12042 | |
33c5cd75 DB |
12043 | complaint (&symfile_complaints, |
12044 | _("debug cu entry at offset 0x%x is duplicate to" | |
12045 | " the entry at offset 0x%x, signature %s"), | |
12046 | to_underlying (sect_off), to_underlying (dup_sect_off), | |
12047 | hex_string (dwo_unit->signature)); | |
19c3d4c9 | 12048 | } |
33c5cd75 | 12049 | *slot = (void *)dwo_unit; |
3019eac3 | 12050 | } |
3019eac3 DE |
12051 | } |
12052 | ||
80626a55 DE |
12053 | /* DWP file .debug_{cu,tu}_index section format: |
12054 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
12055 | ||
d2415c6c DE |
12056 | DWP Version 1: |
12057 | ||
80626a55 DE |
12058 | Both index sections have the same format, and serve to map a 64-bit |
12059 | signature to a set of section numbers. Each section begins with a header, | |
12060 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
12061 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
12062 | aligned at 8-byte boundaries in the file. | |
12063 | ||
d2415c6c DE |
12064 | The index section header consists of: |
12065 | ||
12066 | V, 32 bit version number | |
12067 | -, 32 bits unused | |
12068 | N, 32 bit number of compilation units or type units in the index | |
12069 | M, 32 bit number of slots in the hash table | |
80626a55 | 12070 | |
d2415c6c | 12071 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12072 | |
d2415c6c DE |
12073 | The hash table begins at offset 16 in the section, and consists of an array |
12074 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12075 | order of the application binary). Unused slots in the hash table are 0. | |
12076 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12077 | |
d2415c6c DE |
12078 | The parallel table begins immediately after the hash table |
12079 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12080 | array of 32-bit indexes (using the byte order of the application binary), | |
12081 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12082 | table contains a 32-bit index into the pool of section numbers. For unused | |
12083 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12084 | |
73869dc2 DE |
12085 | The pool of section numbers begins immediately following the hash table |
12086 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12087 | section numbers consists of an array of 32-bit words (using the byte order | |
12088 | of the application binary). Each item in the array is indexed starting | |
12089 | from 0. The hash table entry provides the index of the first section | |
12090 | number in the set. Additional section numbers in the set follow, and the | |
12091 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12092 | ||
12093 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12094 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12095 | be the second entry. Other members of the set may follow in any order. | |
12096 | ||
12097 | --- | |
12098 | ||
12099 | DWP Version 2: | |
12100 | ||
12101 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12102 | and the entries in the index tables are now offsets into these sections. | |
12103 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12104 | section. | |
12105 | ||
12106 | Index Section Contents: | |
12107 | Header | |
12108 | Hash Table of Signatures dwp_hash_table.hash_table | |
12109 | Parallel Table of Indices dwp_hash_table.unit_table | |
12110 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12111 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12112 | ||
12113 | The index section header consists of: | |
12114 | ||
12115 | V, 32 bit version number | |
12116 | L, 32 bit number of columns in the table of section offsets | |
12117 | N, 32 bit number of compilation units or type units in the index | |
12118 | M, 32 bit number of slots in the hash table | |
12119 | ||
12120 | Numbers are recorded using the byte order of the application binary. | |
12121 | ||
12122 | The hash table has the same format as version 1. | |
12123 | The parallel table of indices has the same format as version 1, | |
12124 | except that the entries are origin-1 indices into the table of sections | |
12125 | offsets and the table of section sizes. | |
12126 | ||
12127 | The table of offsets begins immediately following the parallel table | |
12128 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12129 | a two-dimensional array of 32-bit words (using the byte order of the | |
12130 | application binary), with L columns and N+1 rows, in row-major order. | |
12131 | Each row in the array is indexed starting from 0. The first row provides | |
12132 | a key to the remaining rows: each column in this row provides an identifier | |
12133 | for a debug section, and the offsets in the same column of subsequent rows | |
12134 | refer to that section. The section identifiers are: | |
12135 | ||
12136 | DW_SECT_INFO 1 .debug_info.dwo | |
12137 | DW_SECT_TYPES 2 .debug_types.dwo | |
12138 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12139 | DW_SECT_LINE 4 .debug_line.dwo | |
12140 | DW_SECT_LOC 5 .debug_loc.dwo | |
12141 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12142 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12143 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12144 | ||
12145 | The offsets provided by the CU and TU index sections are the base offsets | |
12146 | for the contributions made by each CU or TU to the corresponding section | |
12147 | in the package file. Each CU and TU header contains an abbrev_offset | |
12148 | field, used to find the abbreviations table for that CU or TU within the | |
12149 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12150 | be interpreted as relative to the base offset given in the index section. | |
12151 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12152 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12153 | and offsets into other debug sections obtained from DWARF attributes should | |
12154 | also be interpreted as relative to the corresponding base offset. | |
12155 | ||
12156 | The table of sizes begins immediately following the table of offsets. | |
12157 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12158 | with L columns and N rows, in row-major order. Each row in the array is | |
12159 | indexed starting from 1 (row 0 is shared by the two tables). | |
12160 | ||
12161 | --- | |
12162 | ||
12163 | Hash table lookup is handled the same in version 1 and 2: | |
12164 | ||
12165 | We assume that N and M will not exceed 2^32 - 1. | |
12166 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12167 | ||
d2415c6c DE |
12168 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12169 | in the hash table is located as follows: | |
80626a55 | 12170 | |
d2415c6c DE |
12171 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12172 | the low-order k bits all set to 1. | |
80626a55 | 12173 | |
d2415c6c | 12174 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12175 | |
d2415c6c DE |
12176 | 3) If the hash table entry at index H matches the signature, use that |
12177 | entry. If the hash table entry at index H is unused (all zeroes), | |
12178 | terminate the search: the signature is not present in the table. | |
80626a55 | 12179 | |
d2415c6c | 12180 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12181 | |
d2415c6c | 12182 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12183 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12184 | |
12185 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12186 | .debug_{info,types}.dwo in DWP_FILE. | |
12187 | Returns NULL if there isn't one. | |
12188 | Note: This function processes DWP files only, not DWO files. */ | |
12189 | ||
12190 | static struct dwp_hash_table * | |
ed2dc618 SM |
12191 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12192 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12193 | { |
12194 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12195 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 12196 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12197 | struct dwarf2_section_info *index; |
73869dc2 | 12198 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12199 | struct dwp_hash_table *htab; |
12200 | ||
12201 | if (is_debug_types) | |
12202 | index = &dwp_file->sections.tu_index; | |
12203 | else | |
12204 | index = &dwp_file->sections.cu_index; | |
12205 | ||
12206 | if (dwarf2_section_empty_p (index)) | |
12207 | return NULL; | |
12208 | dwarf2_read_section (objfile, index); | |
12209 | ||
12210 | index_ptr = index->buffer; | |
12211 | index_end = index_ptr + index->size; | |
12212 | ||
12213 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12214 | index_ptr += 4; |
12215 | if (version == 2) | |
12216 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12217 | else | |
12218 | nr_columns = 0; | |
12219 | index_ptr += 4; | |
80626a55 DE |
12220 | nr_units = read_4_bytes (dbfd, index_ptr); |
12221 | index_ptr += 4; | |
12222 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12223 | index_ptr += 4; | |
12224 | ||
73869dc2 | 12225 | if (version != 1 && version != 2) |
80626a55 | 12226 | { |
21aa081e | 12227 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12228 | " [in module %s]"), |
21aa081e | 12229 | pulongest (version), dwp_file->name); |
80626a55 DE |
12230 | } |
12231 | if (nr_slots != (nr_slots & -nr_slots)) | |
12232 | { | |
21aa081e | 12233 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12234 | " is not power of 2 [in module %s]"), |
21aa081e | 12235 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12236 | } |
12237 | ||
12238 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12239 | htab->version = version; |
12240 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12241 | htab->nr_units = nr_units; |
12242 | htab->nr_slots = nr_slots; | |
12243 | htab->hash_table = index_ptr; | |
12244 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12245 | |
12246 | /* Exit early if the table is empty. */ | |
12247 | if (nr_slots == 0 || nr_units == 0 | |
12248 | || (version == 2 && nr_columns == 0)) | |
12249 | { | |
12250 | /* All must be zero. */ | |
12251 | if (nr_slots != 0 || nr_units != 0 | |
12252 | || (version == 2 && nr_columns != 0)) | |
12253 | { | |
12254 | complaint (&symfile_complaints, | |
12255 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
12256 | " all zero [in modules %s]"), | |
12257 | dwp_file->name); | |
12258 | } | |
12259 | return htab; | |
12260 | } | |
12261 | ||
12262 | if (version == 1) | |
12263 | { | |
12264 | htab->section_pool.v1.indices = | |
12265 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12266 | /* It's harder to decide whether the section is too small in v1. | |
12267 | V1 is deprecated anyway so we punt. */ | |
12268 | } | |
12269 | else | |
12270 | { | |
12271 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12272 | int *ids = htab->section_pool.v2.section_ids; | |
12273 | /* Reverse map for error checking. */ | |
12274 | int ids_seen[DW_SECT_MAX + 1]; | |
12275 | int i; | |
12276 | ||
12277 | if (nr_columns < 2) | |
12278 | { | |
12279 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12280 | " in section table [in module %s]"), | |
12281 | dwp_file->name); | |
12282 | } | |
12283 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12284 | { | |
12285 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12286 | " in section table [in module %s]"), | |
12287 | dwp_file->name); | |
12288 | } | |
12289 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12290 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12291 | for (i = 0; i < nr_columns; ++i) | |
12292 | { | |
12293 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12294 | ||
12295 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12296 | { | |
12297 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12298 | " in section table [in module %s]"), | |
12299 | id, dwp_file->name); | |
12300 | } | |
12301 | if (ids_seen[id] != -1) | |
12302 | { | |
12303 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12304 | " id %d in section table [in module %s]"), | |
12305 | id, dwp_file->name); | |
12306 | } | |
12307 | ids_seen[id] = i; | |
12308 | ids[i] = id; | |
12309 | } | |
12310 | /* Must have exactly one info or types section. */ | |
12311 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12312 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12313 | != 1) | |
12314 | { | |
12315 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12316 | " DWO info/types section [in module %s]"), | |
12317 | dwp_file->name); | |
12318 | } | |
12319 | /* Must have an abbrev section. */ | |
12320 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12321 | { | |
12322 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12323 | " section [in module %s]"), | |
12324 | dwp_file->name); | |
12325 | } | |
12326 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12327 | htab->section_pool.v2.sizes = | |
12328 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12329 | * nr_units * nr_columns); | |
12330 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12331 | * nr_units * nr_columns)) | |
12332 | > index_end) | |
12333 | { | |
12334 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12335 | " [in module %s]"), | |
12336 | dwp_file->name); | |
12337 | } | |
12338 | } | |
80626a55 DE |
12339 | |
12340 | return htab; | |
12341 | } | |
12342 | ||
12343 | /* Update SECTIONS with the data from SECTP. | |
12344 | ||
12345 | This function is like the other "locate" section routines that are | |
12346 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12347 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12348 | |
12349 | The result is non-zero for success, or zero if an error was found. */ | |
12350 | ||
12351 | static int | |
73869dc2 DE |
12352 | locate_v1_virtual_dwo_sections (asection *sectp, |
12353 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12354 | { |
12355 | const struct dwop_section_names *names = &dwop_section_names; | |
12356 | ||
12357 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12358 | { | |
12359 | /* There can be only one. */ | |
049412e3 | 12360 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12361 | return 0; |
049412e3 | 12362 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12363 | sections->abbrev.size = bfd_get_section_size (sectp); |
12364 | } | |
12365 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12366 | || section_is_p (sectp->name, &names->types_dwo)) | |
12367 | { | |
12368 | /* There can be only one. */ | |
049412e3 | 12369 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12370 | return 0; |
049412e3 | 12371 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12372 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12373 | } | |
12374 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12375 | { | |
12376 | /* There can be only one. */ | |
049412e3 | 12377 | if (sections->line.s.section != NULL) |
80626a55 | 12378 | return 0; |
049412e3 | 12379 | sections->line.s.section = sectp; |
80626a55 DE |
12380 | sections->line.size = bfd_get_section_size (sectp); |
12381 | } | |
12382 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12383 | { | |
12384 | /* There can be only one. */ | |
049412e3 | 12385 | if (sections->loc.s.section != NULL) |
80626a55 | 12386 | return 0; |
049412e3 | 12387 | sections->loc.s.section = sectp; |
80626a55 DE |
12388 | sections->loc.size = bfd_get_section_size (sectp); |
12389 | } | |
12390 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12391 | { | |
12392 | /* There can be only one. */ | |
049412e3 | 12393 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12394 | return 0; |
049412e3 | 12395 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12396 | sections->macinfo.size = bfd_get_section_size (sectp); |
12397 | } | |
12398 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12399 | { | |
12400 | /* There can be only one. */ | |
049412e3 | 12401 | if (sections->macro.s.section != NULL) |
80626a55 | 12402 | return 0; |
049412e3 | 12403 | sections->macro.s.section = sectp; |
80626a55 DE |
12404 | sections->macro.size = bfd_get_section_size (sectp); |
12405 | } | |
12406 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12407 | { | |
12408 | /* There can be only one. */ | |
049412e3 | 12409 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12410 | return 0; |
049412e3 | 12411 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12412 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12413 | } | |
12414 | else | |
12415 | { | |
12416 | /* No other kind of section is valid. */ | |
12417 | return 0; | |
12418 | } | |
12419 | ||
12420 | return 1; | |
12421 | } | |
12422 | ||
73869dc2 DE |
12423 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12424 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12425 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12426 | This is for DWP version 1 files. */ | |
80626a55 DE |
12427 | |
12428 | static struct dwo_unit * | |
ed2dc618 SM |
12429 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12430 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12431 | uint32_t unit_index, |
12432 | const char *comp_dir, | |
12433 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12434 | { |
12435 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12436 | const struct dwp_hash_table *dwp_htab = |
12437 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
12438 | bfd *dbfd = dwp_file->dbfd; |
12439 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12440 | struct dwo_file *dwo_file; | |
12441 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12442 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12443 | void **dwo_file_slot; |
80626a55 DE |
12444 | int i; |
12445 | ||
73869dc2 DE |
12446 | gdb_assert (dwp_file->version == 1); |
12447 | ||
b4f54984 | 12448 | if (dwarf_read_debug) |
80626a55 | 12449 | { |
73869dc2 | 12450 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12451 | kind, |
73869dc2 | 12452 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12453 | dwp_file->name); |
12454 | } | |
12455 | ||
19ac8c2e | 12456 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12457 | Put a limit on the number of sections we look for so that bad data |
12458 | doesn't cause us to loop forever. */ | |
12459 | ||
73869dc2 | 12460 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12461 | (1 /* .debug_info or .debug_types */ \ |
12462 | + 1 /* .debug_abbrev */ \ | |
12463 | + 1 /* .debug_line */ \ | |
12464 | + 1 /* .debug_loc */ \ | |
12465 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12466 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12467 | + 1 /* trailing zero */) |
12468 | ||
12469 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12470 | |
73869dc2 | 12471 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12472 | { |
12473 | asection *sectp; | |
12474 | uint32_t section_nr = | |
12475 | read_4_bytes (dbfd, | |
73869dc2 DE |
12476 | dwp_htab->section_pool.v1.indices |
12477 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12478 | |
12479 | if (section_nr == 0) | |
12480 | break; | |
12481 | if (section_nr >= dwp_file->num_sections) | |
12482 | { | |
12483 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12484 | " [in module %s]"), | |
12485 | dwp_file->name); | |
12486 | } | |
12487 | ||
12488 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12489 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12490 | { |
12491 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12492 | " [in module %s]"), | |
12493 | dwp_file->name); | |
12494 | } | |
12495 | } | |
12496 | ||
12497 | if (i < 2 | |
a32a8923 DE |
12498 | || dwarf2_section_empty_p (§ions.info_or_types) |
12499 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12500 | { |
12501 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12502 | " [in module %s]"), | |
12503 | dwp_file->name); | |
12504 | } | |
73869dc2 | 12505 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12506 | { |
12507 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12508 | " [in module %s]"), | |
12509 | dwp_file->name); | |
12510 | } | |
12511 | ||
12512 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12513 | have dwo_unit "live" in that. At least for now. | |
12514 | ||
12515 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12516 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12517 | file, we can combine them back into a virtual DWO file to save space |
12518 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12519 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12520 | ||
791afaa2 TT |
12521 | std::string virtual_dwo_name = |
12522 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12523 | get_section_id (§ions.abbrev), | |
12524 | get_section_id (§ions.line), | |
12525 | get_section_id (§ions.loc), | |
12526 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12527 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12528 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12529 | virtual_dwo_name.c_str (), | |
12530 | comp_dir); | |
80626a55 DE |
12531 | /* Create one if necessary. */ |
12532 | if (*dwo_file_slot == NULL) | |
12533 | { | |
b4f54984 | 12534 | if (dwarf_read_debug) |
80626a55 DE |
12535 | { |
12536 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12537 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12538 | } |
12539 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12540 | dwo_file->dwo_name |
12541 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12542 | virtual_dwo_name.c_str (), |
12543 | virtual_dwo_name.size ()); | |
0ac5b59e | 12544 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12545 | dwo_file->sections.abbrev = sections.abbrev; |
12546 | dwo_file->sections.line = sections.line; | |
12547 | dwo_file->sections.loc = sections.loc; | |
12548 | dwo_file->sections.macinfo = sections.macinfo; | |
12549 | dwo_file->sections.macro = sections.macro; | |
12550 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12551 | /* The "str" section is global to the entire DWP file. */ | |
12552 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12553 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12554 | there's no need to record it in dwo_file. |
12555 | Also, we can't simply record type sections in dwo_file because | |
12556 | we record a pointer into the vector in dwo_unit. As we collect more | |
12557 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12558 | for it, invalidating all copies of pointers into the previous |
12559 | contents. */ | |
80626a55 DE |
12560 | *dwo_file_slot = dwo_file; |
12561 | } | |
12562 | else | |
12563 | { | |
b4f54984 | 12564 | if (dwarf_read_debug) |
80626a55 DE |
12565 | { |
12566 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12567 | virtual_dwo_name.c_str ()); |
80626a55 | 12568 | } |
9a3c8263 | 12569 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12570 | } |
80626a55 DE |
12571 | |
12572 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12573 | dwo_unit->dwo_file = dwo_file; | |
12574 | dwo_unit->signature = signature; | |
8d749320 SM |
12575 | dwo_unit->section = |
12576 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12577 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12578 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12579 | |
12580 | return dwo_unit; | |
12581 | } | |
12582 | ||
73869dc2 DE |
12583 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12584 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12585 | piece within that section used by a TU/CU, return a virtual section | |
12586 | of just that piece. */ | |
12587 | ||
12588 | static struct dwarf2_section_info | |
ed2dc618 SM |
12589 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12590 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12591 | bfd_size_type offset, bfd_size_type size) |
12592 | { | |
12593 | struct dwarf2_section_info result; | |
12594 | asection *sectp; | |
12595 | ||
12596 | gdb_assert (section != NULL); | |
12597 | gdb_assert (!section->is_virtual); | |
12598 | ||
12599 | memset (&result, 0, sizeof (result)); | |
12600 | result.s.containing_section = section; | |
12601 | result.is_virtual = 1; | |
12602 | ||
12603 | if (size == 0) | |
12604 | return result; | |
12605 | ||
12606 | sectp = get_section_bfd_section (section); | |
12607 | ||
12608 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12609 | bounds of the real section. This is a pretty-rare event, so just | |
12610 | flag an error (easier) instead of a warning and trying to cope. */ | |
12611 | if (sectp == NULL | |
12612 | || offset + size > bfd_get_section_size (sectp)) | |
12613 | { | |
73869dc2 DE |
12614 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12615 | " in section %s [in module %s]"), | |
12616 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12617 | objfile_name (dwarf2_per_objfile->objfile)); | |
12618 | } | |
12619 | ||
12620 | result.virtual_offset = offset; | |
12621 | result.size = size; | |
12622 | return result; | |
12623 | } | |
12624 | ||
12625 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12626 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12627 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12628 | This is for DWP version 2 files. */ | |
12629 | ||
12630 | static struct dwo_unit * | |
ed2dc618 SM |
12631 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12632 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12633 | uint32_t unit_index, |
12634 | const char *comp_dir, | |
12635 | ULONGEST signature, int is_debug_types) | |
12636 | { | |
12637 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12638 | const struct dwp_hash_table *dwp_htab = | |
12639 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12640 | bfd *dbfd = dwp_file->dbfd; | |
12641 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12642 | struct dwo_file *dwo_file; | |
12643 | struct dwo_unit *dwo_unit; | |
12644 | struct virtual_v2_dwo_sections sections; | |
12645 | void **dwo_file_slot; | |
73869dc2 DE |
12646 | int i; |
12647 | ||
12648 | gdb_assert (dwp_file->version == 2); | |
12649 | ||
b4f54984 | 12650 | if (dwarf_read_debug) |
73869dc2 DE |
12651 | { |
12652 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12653 | kind, | |
12654 | pulongest (unit_index), hex_string (signature), | |
12655 | dwp_file->name); | |
12656 | } | |
12657 | ||
12658 | /* Fetch the section offsets of this DWO unit. */ | |
12659 | ||
12660 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12661 | |
12662 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12663 | { | |
12664 | uint32_t offset = read_4_bytes (dbfd, | |
12665 | dwp_htab->section_pool.v2.offsets | |
12666 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12667 | + i) | |
12668 | * sizeof (uint32_t))); | |
12669 | uint32_t size = read_4_bytes (dbfd, | |
12670 | dwp_htab->section_pool.v2.sizes | |
12671 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12672 | + i) | |
12673 | * sizeof (uint32_t))); | |
12674 | ||
12675 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12676 | { | |
12677 | case DW_SECT_INFO: | |
12678 | case DW_SECT_TYPES: | |
12679 | sections.info_or_types_offset = offset; | |
12680 | sections.info_or_types_size = size; | |
12681 | break; | |
12682 | case DW_SECT_ABBREV: | |
12683 | sections.abbrev_offset = offset; | |
12684 | sections.abbrev_size = size; | |
12685 | break; | |
12686 | case DW_SECT_LINE: | |
12687 | sections.line_offset = offset; | |
12688 | sections.line_size = size; | |
12689 | break; | |
12690 | case DW_SECT_LOC: | |
12691 | sections.loc_offset = offset; | |
12692 | sections.loc_size = size; | |
12693 | break; | |
12694 | case DW_SECT_STR_OFFSETS: | |
12695 | sections.str_offsets_offset = offset; | |
12696 | sections.str_offsets_size = size; | |
12697 | break; | |
12698 | case DW_SECT_MACINFO: | |
12699 | sections.macinfo_offset = offset; | |
12700 | sections.macinfo_size = size; | |
12701 | break; | |
12702 | case DW_SECT_MACRO: | |
12703 | sections.macro_offset = offset; | |
12704 | sections.macro_size = size; | |
12705 | break; | |
12706 | } | |
12707 | } | |
12708 | ||
12709 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12710 | have dwo_unit "live" in that. At least for now. | |
12711 | ||
12712 | The DWP file can be made up of a random collection of CUs and TUs. | |
12713 | However, for each CU + set of TUs that came from the same original DWO | |
12714 | file, we can combine them back into a virtual DWO file to save space | |
12715 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12716 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12717 | ||
791afaa2 TT |
12718 | std::string virtual_dwo_name = |
12719 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12720 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12721 | (long) (sections.line_size ? sections.line_offset : 0), | |
12722 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12723 | (long) (sections.str_offsets_size | |
12724 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12725 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12726 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12727 | virtual_dwo_name.c_str (), | |
12728 | comp_dir); | |
73869dc2 DE |
12729 | /* Create one if necessary. */ |
12730 | if (*dwo_file_slot == NULL) | |
12731 | { | |
b4f54984 | 12732 | if (dwarf_read_debug) |
73869dc2 DE |
12733 | { |
12734 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12735 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12736 | } |
12737 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12738 | dwo_file->dwo_name |
12739 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12740 | virtual_dwo_name.c_str (), |
12741 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12742 | dwo_file->comp_dir = comp_dir; |
12743 | dwo_file->sections.abbrev = | |
ed2dc618 | 12744 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12745 | sections.abbrev_offset, sections.abbrev_size); |
12746 | dwo_file->sections.line = | |
ed2dc618 | 12747 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12748 | sections.line_offset, sections.line_size); |
12749 | dwo_file->sections.loc = | |
ed2dc618 | 12750 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12751 | sections.loc_offset, sections.loc_size); |
12752 | dwo_file->sections.macinfo = | |
ed2dc618 | 12753 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12754 | sections.macinfo_offset, sections.macinfo_size); |
12755 | dwo_file->sections.macro = | |
ed2dc618 | 12756 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12757 | sections.macro_offset, sections.macro_size); |
12758 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12759 | create_dwp_v2_section (dwarf2_per_objfile, |
12760 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12761 | sections.str_offsets_offset, |
12762 | sections.str_offsets_size); | |
12763 | /* The "str" section is global to the entire DWP file. */ | |
12764 | dwo_file->sections.str = dwp_file->sections.str; | |
12765 | /* The info or types section is assigned below to dwo_unit, | |
12766 | there's no need to record it in dwo_file. | |
12767 | Also, we can't simply record type sections in dwo_file because | |
12768 | we record a pointer into the vector in dwo_unit. As we collect more | |
12769 | types we'll grow the vector and eventually have to reallocate space | |
12770 | for it, invalidating all copies of pointers into the previous | |
12771 | contents. */ | |
12772 | *dwo_file_slot = dwo_file; | |
12773 | } | |
12774 | else | |
12775 | { | |
b4f54984 | 12776 | if (dwarf_read_debug) |
73869dc2 DE |
12777 | { |
12778 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12779 | virtual_dwo_name.c_str ()); |
73869dc2 | 12780 | } |
9a3c8263 | 12781 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12782 | } |
73869dc2 DE |
12783 | |
12784 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12785 | dwo_unit->dwo_file = dwo_file; | |
12786 | dwo_unit->signature = signature; | |
8d749320 SM |
12787 | dwo_unit->section = |
12788 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12789 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12790 | is_debug_types | |
73869dc2 DE |
12791 | ? &dwp_file->sections.types |
12792 | : &dwp_file->sections.info, | |
12793 | sections.info_or_types_offset, | |
12794 | sections.info_or_types_size); | |
12795 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12796 | ||
12797 | return dwo_unit; | |
12798 | } | |
12799 | ||
57d63ce2 DE |
12800 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12801 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12802 | |
12803 | static struct dwo_unit * | |
ed2dc618 SM |
12804 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12805 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12806 | ULONGEST signature, int is_debug_types) |
80626a55 | 12807 | { |
57d63ce2 DE |
12808 | const struct dwp_hash_table *dwp_htab = |
12809 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 12810 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 12811 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12812 | uint32_t hash = signature & mask; |
12813 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12814 | unsigned int i; | |
12815 | void **slot; | |
870f88f7 | 12816 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12817 | |
12818 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12819 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12820 | slot = htab_find_slot (is_debug_types |
12821 | ? dwp_file->loaded_tus | |
12822 | : dwp_file->loaded_cus, | |
12823 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12824 | |
12825 | if (*slot != NULL) | |
9a3c8263 | 12826 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12827 | |
12828 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12829 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12830 | { |
12831 | ULONGEST signature_in_table; | |
12832 | ||
12833 | signature_in_table = | |
57d63ce2 | 12834 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12835 | if (signature_in_table == signature) |
12836 | { | |
57d63ce2 DE |
12837 | uint32_t unit_index = |
12838 | read_4_bytes (dbfd, | |
12839 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12840 | |
73869dc2 DE |
12841 | if (dwp_file->version == 1) |
12842 | { | |
ed2dc618 SM |
12843 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12844 | dwp_file, unit_index, | |
73869dc2 DE |
12845 | comp_dir, signature, |
12846 | is_debug_types); | |
12847 | } | |
12848 | else | |
12849 | { | |
ed2dc618 SM |
12850 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12851 | dwp_file, unit_index, | |
73869dc2 DE |
12852 | comp_dir, signature, |
12853 | is_debug_types); | |
12854 | } | |
9a3c8263 | 12855 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12856 | } |
12857 | if (signature_in_table == 0) | |
12858 | return NULL; | |
12859 | hash = (hash + hash2) & mask; | |
12860 | } | |
12861 | ||
12862 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12863 | " [in module %s]"), | |
12864 | dwp_file->name); | |
12865 | } | |
12866 | ||
ab5088bf | 12867 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12868 | Open the file specified by FILE_NAME and hand it off to BFD for |
12869 | preliminary analysis. Return a newly initialized bfd *, which | |
12870 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12871 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12872 | SEARCH_CWD is true if the current directory is to be searched. |
12873 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12874 | If successful, the file is added to the bfd include table of the |
12875 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12876 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12877 | NOTE: This function is derived from symfile_bfd_open. */ |
12878 | ||
192b62ce | 12879 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12880 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12881 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12882 | { |
24b9144d | 12883 | int desc; |
3019eac3 | 12884 | char *absolute_name; |
9c02c129 DE |
12885 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12886 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12887 | to debug_file_directory. */ | |
12888 | char *search_path; | |
12889 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
12890 | ||
6ac97d4c DE |
12891 | if (search_cwd) |
12892 | { | |
12893 | if (*debug_file_directory != '\0') | |
12894 | search_path = concat (".", dirname_separator_string, | |
b36cec19 | 12895 | debug_file_directory, (char *) NULL); |
6ac97d4c DE |
12896 | else |
12897 | search_path = xstrdup ("."); | |
12898 | } | |
9c02c129 | 12899 | else |
6ac97d4c | 12900 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 12901 | |
24b9144d | 12902 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12903 | if (is_dwp) |
12904 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 12905 | desc = openp (search_path, flags, file_name, |
3019eac3 | 12906 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 12907 | xfree (search_path); |
3019eac3 DE |
12908 | if (desc < 0) |
12909 | return NULL; | |
12910 | ||
192b62ce | 12911 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name, gnutarget, desc)); |
a4453b7e | 12912 | xfree (absolute_name); |
9c02c129 DE |
12913 | if (sym_bfd == NULL) |
12914 | return NULL; | |
192b62ce | 12915 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12916 | |
192b62ce TT |
12917 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12918 | return NULL; | |
3019eac3 | 12919 | |
13aaf454 DE |
12920 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12921 | This is important because things like demangled_names_hash lives in the | |
12922 | objfile's per_bfd space and may have references to things like symbol | |
12923 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12924 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12925 | |
3019eac3 DE |
12926 | return sym_bfd; |
12927 | } | |
12928 | ||
ab5088bf | 12929 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12930 | COMP_DIR is the DW_AT_comp_dir attribute. |
12931 | The result is the bfd handle of the file. | |
12932 | If there is a problem finding or opening the file, return NULL. | |
12933 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12934 | same as symfile_bfd_open. */ | |
12935 | ||
192b62ce | 12936 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12937 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12938 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12939 | { |
80626a55 | 12940 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12941 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12942 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12943 | |
12944 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12945 | ||
12946 | if (comp_dir != NULL) | |
12947 | { | |
b36cec19 PA |
12948 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12949 | file_name, (char *) NULL); | |
3019eac3 DE |
12950 | |
12951 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12952 | search path, which seems useful. */ | |
ed2dc618 SM |
12953 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12954 | path_to_try, | |
12955 | 0 /*is_dwp*/, | |
192b62ce | 12956 | 1 /*search_cwd*/)); |
3019eac3 DE |
12957 | xfree (path_to_try); |
12958 | if (abfd != NULL) | |
12959 | return abfd; | |
12960 | } | |
12961 | ||
12962 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12963 | is a list of paths. */ | |
12964 | ||
12965 | if (*debug_file_directory == '\0') | |
12966 | return NULL; | |
12967 | ||
ed2dc618 SM |
12968 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12969 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12970 | } |
12971 | ||
80626a55 DE |
12972 | /* This function is mapped across the sections and remembers the offset and |
12973 | size of each of the DWO debugging sections we are interested in. */ | |
12974 | ||
12975 | static void | |
12976 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12977 | { | |
9a3c8263 | 12978 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12979 | const struct dwop_section_names *names = &dwop_section_names; |
12980 | ||
12981 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12982 | { | |
049412e3 | 12983 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12984 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12985 | } | |
12986 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12987 | { | |
049412e3 | 12988 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12989 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12990 | } | |
12991 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12992 | { | |
049412e3 | 12993 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12994 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12995 | } | |
12996 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12997 | { | |
049412e3 | 12998 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12999 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
13000 | } | |
13001 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13002 | { | |
049412e3 | 13003 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
13004 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
13005 | } | |
13006 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13007 | { | |
049412e3 | 13008 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
13009 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
13010 | } | |
13011 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
13012 | { | |
049412e3 | 13013 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
13014 | dwo_sections->str.size = bfd_get_section_size (sectp); |
13015 | } | |
13016 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13017 | { | |
049412e3 | 13018 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
13019 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
13020 | } | |
13021 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13022 | { | |
13023 | struct dwarf2_section_info type_section; | |
13024 | ||
13025 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 13026 | type_section.s.section = sectp; |
80626a55 DE |
13027 | type_section.size = bfd_get_section_size (sectp); |
13028 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
13029 | &type_section); | |
13030 | } | |
13031 | } | |
13032 | ||
ab5088bf | 13033 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 13034 | by PER_CU. This is for the non-DWP case. |
80626a55 | 13035 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
13036 | |
13037 | static struct dwo_file * | |
0ac5b59e DE |
13038 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
13039 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 13040 | { |
ed2dc618 | 13041 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 13042 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 | 13043 | struct dwo_file *dwo_file; |
3019eac3 DE |
13044 | struct cleanup *cleanups; |
13045 | ||
ed2dc618 | 13046 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
13047 | if (dbfd == NULL) |
13048 | { | |
b4f54984 | 13049 | if (dwarf_read_debug) |
80626a55 DE |
13050 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
13051 | return NULL; | |
13052 | } | |
13053 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
13054 | dwo_file->dwo_name = dwo_name; |
13055 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 13056 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 13057 | |
ed2dc618 SM |
13058 | free_dwo_file_cleanup_data *cleanup_data = XNEW (free_dwo_file_cleanup_data); |
13059 | cleanup_data->dwo_file = dwo_file; | |
13060 | cleanup_data->dwarf2_per_objfile = dwarf2_per_objfile; | |
13061 | ||
13062 | cleanups = make_cleanup (free_dwo_file_cleanup, cleanup_data); | |
3019eac3 | 13063 | |
192b62ce TT |
13064 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
13065 | &dwo_file->sections); | |
3019eac3 | 13066 | |
ed2dc618 SM |
13067 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
13068 | dwo_file->cus); | |
3019eac3 | 13069 | |
ed2dc618 SM |
13070 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file, |
13071 | dwo_file->sections.types, dwo_file->tus); | |
3019eac3 DE |
13072 | |
13073 | discard_cleanups (cleanups); | |
13074 | ||
b4f54984 | 13075 | if (dwarf_read_debug) |
80626a55 DE |
13076 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13077 | ||
3019eac3 DE |
13078 | return dwo_file; |
13079 | } | |
13080 | ||
80626a55 | 13081 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13082 | size of each of the DWP debugging sections common to version 1 and 2 that |
13083 | we are interested in. */ | |
3019eac3 | 13084 | |
80626a55 | 13085 | static void |
73869dc2 DE |
13086 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13087 | void *dwp_file_ptr) | |
3019eac3 | 13088 | { |
9a3c8263 | 13089 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13090 | const struct dwop_section_names *names = &dwop_section_names; |
13091 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13092 | |
80626a55 | 13093 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13094 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13095 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13096 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13097 | |
80626a55 DE |
13098 | /* Look for specific sections that we need. */ |
13099 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13100 | { | |
049412e3 | 13101 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13102 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13103 | } | |
13104 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13105 | { | |
049412e3 | 13106 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13107 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13108 | } | |
13109 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13110 | { | |
049412e3 | 13111 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13112 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13113 | } | |
13114 | } | |
3019eac3 | 13115 | |
73869dc2 DE |
13116 | /* This function is mapped across the sections and remembers the offset and |
13117 | size of each of the DWP version 2 debugging sections that we are interested | |
13118 | in. This is split into a separate function because we don't know if we | |
13119 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13120 | ||
13121 | static void | |
13122 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13123 | { | |
9a3c8263 | 13124 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13125 | const struct dwop_section_names *names = &dwop_section_names; |
13126 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13127 | ||
13128 | /* Record the ELF section number for later lookup: this is what the | |
13129 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13130 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13131 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13132 | ||
13133 | /* Look for specific sections that we need. */ | |
13134 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13135 | { | |
049412e3 | 13136 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13137 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13138 | } | |
13139 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13140 | { | |
049412e3 | 13141 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13142 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13143 | } | |
13144 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13145 | { | |
049412e3 | 13146 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13147 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13148 | } | |
13149 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13150 | { | |
049412e3 | 13151 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13152 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13153 | } | |
13154 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13155 | { | |
049412e3 | 13156 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13157 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13158 | } | |
13159 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13160 | { | |
049412e3 | 13161 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13162 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13163 | } | |
13164 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13165 | { | |
049412e3 | 13166 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13167 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13168 | } | |
13169 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13170 | { | |
049412e3 | 13171 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13172 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13173 | } | |
13174 | } | |
13175 | ||
80626a55 | 13176 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13177 | |
80626a55 DE |
13178 | static hashval_t |
13179 | hash_dwp_loaded_cutus (const void *item) | |
13180 | { | |
9a3c8263 | 13181 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13182 | |
80626a55 DE |
13183 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13184 | return dwo_unit->signature; | |
3019eac3 DE |
13185 | } |
13186 | ||
80626a55 | 13187 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13188 | |
80626a55 DE |
13189 | static int |
13190 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13191 | { |
9a3c8263 SM |
13192 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13193 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13194 | |
80626a55 DE |
13195 | return dua->signature == dub->signature; |
13196 | } | |
3019eac3 | 13197 | |
80626a55 | 13198 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13199 | |
80626a55 DE |
13200 | static htab_t |
13201 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13202 | { | |
13203 | return htab_create_alloc_ex (3, | |
13204 | hash_dwp_loaded_cutus, | |
13205 | eq_dwp_loaded_cutus, | |
13206 | NULL, | |
13207 | &objfile->objfile_obstack, | |
13208 | hashtab_obstack_allocate, | |
13209 | dummy_obstack_deallocate); | |
13210 | } | |
3019eac3 | 13211 | |
ab5088bf DE |
13212 | /* Try to open DWP file FILE_NAME. |
13213 | The result is the bfd handle of the file. | |
13214 | If there is a problem finding or opening the file, return NULL. | |
13215 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13216 | same as symfile_bfd_open. */ | |
13217 | ||
192b62ce | 13218 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13219 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13220 | const char *file_name) | |
ab5088bf | 13221 | { |
ed2dc618 SM |
13222 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13223 | 1 /*is_dwp*/, | |
192b62ce | 13224 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13225 | if (abfd != NULL) |
13226 | return abfd; | |
13227 | ||
13228 | /* Work around upstream bug 15652. | |
13229 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13230 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13231 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13232 | of the executable's path may have discarded the needed info. | |
13233 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13234 | .gnu_debuglink, but that doesn't exist yet.] | |
13235 | Strip the directory from FILE_NAME and search again. */ | |
13236 | if (*debug_file_directory != '\0') | |
13237 | { | |
13238 | /* Don't implicitly search the current directory here. | |
13239 | If the user wants to search "." to handle this case, | |
13240 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13241 | return try_open_dwop_file (dwarf2_per_objfile, |
13242 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13243 | 0 /*search_cwd*/); |
13244 | } | |
13245 | ||
13246 | return NULL; | |
ab5088bf DE |
13247 | } |
13248 | ||
80626a55 DE |
13249 | /* Initialize the use of the DWP file for the current objfile. |
13250 | By convention the name of the DWP file is ${objfile}.dwp. | |
13251 | The result is NULL if it can't be found. */ | |
a766d390 | 13252 | |
80626a55 | 13253 | static struct dwp_file * |
ed2dc618 | 13254 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13255 | { |
13256 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13257 | struct dwp_file *dwp_file; | |
80626a55 | 13258 | |
82bf32bc JK |
13259 | /* Try to find first .dwp for the binary file before any symbolic links |
13260 | resolving. */ | |
6c447423 DE |
13261 | |
13262 | /* If the objfile is a debug file, find the name of the real binary | |
13263 | file and get the name of dwp file from there. */ | |
d721ba37 | 13264 | std::string dwp_name; |
6c447423 DE |
13265 | if (objfile->separate_debug_objfile_backlink != NULL) |
13266 | { | |
13267 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13268 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13269 | |
d721ba37 | 13270 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13271 | } |
13272 | else | |
d721ba37 PA |
13273 | dwp_name = objfile->original_name; |
13274 | ||
13275 | dwp_name += ".dwp"; | |
80626a55 | 13276 | |
ed2dc618 | 13277 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13278 | if (dbfd == NULL |
13279 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13280 | { | |
13281 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13282 | dwp_name = objfile_name (objfile); |
13283 | dwp_name += ".dwp"; | |
ed2dc618 | 13284 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13285 | } |
13286 | ||
80626a55 DE |
13287 | if (dbfd == NULL) |
13288 | { | |
b4f54984 | 13289 | if (dwarf_read_debug) |
d721ba37 | 13290 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
80626a55 | 13291 | return NULL; |
3019eac3 | 13292 | } |
80626a55 | 13293 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
13294 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
13295 | dwp_file->dbfd = dbfd.release (); | |
c906108c | 13296 | |
80626a55 | 13297 | /* +1: section 0 is unused */ |
192b62ce | 13298 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13299 | dwp_file->elf_sections = |
13300 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13301 | dwp_file->num_sections, asection *); | |
13302 | ||
192b62ce TT |
13303 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
13304 | dwp_file); | |
80626a55 | 13305 | |
ed2dc618 | 13306 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 0); |
80626a55 | 13307 | |
ed2dc618 | 13308 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 1); |
80626a55 | 13309 | |
73869dc2 | 13310 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13311 | if (dwp_file->cus && dwp_file->tus |
13312 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13313 | { |
13314 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13315 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13316 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13317 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13318 | " TU version %s [in DWP file %s]"), | |
13319 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13320 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13321 | } |
08302ed2 DE |
13322 | |
13323 | if (dwp_file->cus) | |
13324 | dwp_file->version = dwp_file->cus->version; | |
13325 | else if (dwp_file->tus) | |
13326 | dwp_file->version = dwp_file->tus->version; | |
13327 | else | |
13328 | dwp_file->version = 2; | |
73869dc2 DE |
13329 | |
13330 | if (dwp_file->version == 2) | |
192b62ce TT |
13331 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
13332 | dwp_file); | |
73869dc2 | 13333 | |
19ac8c2e DE |
13334 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13335 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13336 | |
b4f54984 | 13337 | if (dwarf_read_debug) |
80626a55 DE |
13338 | { |
13339 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13340 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13341 | " %s CUs, %s TUs\n", |
13342 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13343 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13344 | } |
13345 | ||
13346 | return dwp_file; | |
3019eac3 | 13347 | } |
c906108c | 13348 | |
ab5088bf DE |
13349 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13350 | ||
13351 | static struct dwp_file * | |
ed2dc618 | 13352 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13353 | { |
13354 | if (! dwarf2_per_objfile->dwp_checked) | |
13355 | { | |
ed2dc618 SM |
13356 | dwarf2_per_objfile->dwp_file |
13357 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13358 | dwarf2_per_objfile->dwp_checked = 1; |
13359 | } | |
13360 | return dwarf2_per_objfile->dwp_file; | |
13361 | } | |
13362 | ||
80626a55 DE |
13363 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13364 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13365 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13366 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13367 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13368 | ||
13369 | This is called, for example, when wanting to read a variable with a | |
13370 | complex location. Therefore we don't want to do file i/o for every call. | |
13371 | Therefore we don't want to look for a DWO file on every call. | |
13372 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13373 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13374 | for a DWO file. | |
13375 | ||
1c658ad5 | 13376 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13377 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13378 | |
3019eac3 | 13379 | static struct dwo_unit * |
80626a55 DE |
13380 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13381 | const char *dwo_name, const char *comp_dir, | |
13382 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13383 | { |
ed2dc618 | 13384 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13385 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13386 | const char *kind = is_debug_types ? "TU" : "CU"; |
13387 | void **dwo_file_slot; | |
3019eac3 | 13388 | struct dwo_file *dwo_file; |
80626a55 | 13389 | struct dwp_file *dwp_file; |
cb1df416 | 13390 | |
6a506a2d DE |
13391 | /* First see if there's a DWP file. |
13392 | If we have a DWP file but didn't find the DWO inside it, don't | |
13393 | look for the original DWO file. It makes gdb behave differently | |
13394 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13395 | |
ed2dc618 | 13396 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13397 | if (dwp_file != NULL) |
cf2c3c16 | 13398 | { |
80626a55 DE |
13399 | const struct dwp_hash_table *dwp_htab = |
13400 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13401 | ||
13402 | if (dwp_htab != NULL) | |
13403 | { | |
13404 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13405 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13406 | signature, is_debug_types); |
80626a55 DE |
13407 | |
13408 | if (dwo_cutu != NULL) | |
13409 | { | |
b4f54984 | 13410 | if (dwarf_read_debug) |
80626a55 DE |
13411 | { |
13412 | fprintf_unfiltered (gdb_stdlog, | |
13413 | "Virtual DWO %s %s found: @%s\n", | |
13414 | kind, hex_string (signature), | |
13415 | host_address_to_string (dwo_cutu)); | |
13416 | } | |
13417 | return dwo_cutu; | |
13418 | } | |
13419 | } | |
13420 | } | |
6a506a2d | 13421 | else |
80626a55 | 13422 | { |
6a506a2d | 13423 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13424 | |
ed2dc618 SM |
13425 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13426 | dwo_name, comp_dir); | |
6a506a2d | 13427 | if (*dwo_file_slot == NULL) |
80626a55 | 13428 | { |
6a506a2d DE |
13429 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13430 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13431 | } |
6a506a2d | 13432 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13433 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13434 | |
6a506a2d | 13435 | if (dwo_file != NULL) |
19c3d4c9 | 13436 | { |
6a506a2d DE |
13437 | struct dwo_unit *dwo_cutu = NULL; |
13438 | ||
13439 | if (is_debug_types && dwo_file->tus) | |
13440 | { | |
13441 | struct dwo_unit find_dwo_cutu; | |
13442 | ||
13443 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13444 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13445 | dwo_cutu |
13446 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13447 | } |
33c5cd75 | 13448 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13449 | { |
33c5cd75 DB |
13450 | struct dwo_unit find_dwo_cutu; |
13451 | ||
13452 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13453 | find_dwo_cutu.signature = signature; | |
13454 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13455 | &find_dwo_cutu); | |
6a506a2d DE |
13456 | } |
13457 | ||
13458 | if (dwo_cutu != NULL) | |
13459 | { | |
b4f54984 | 13460 | if (dwarf_read_debug) |
6a506a2d DE |
13461 | { |
13462 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13463 | kind, dwo_name, hex_string (signature), | |
13464 | host_address_to_string (dwo_cutu)); | |
13465 | } | |
13466 | return dwo_cutu; | |
80626a55 DE |
13467 | } |
13468 | } | |
2e276125 | 13469 | } |
9cdd5dbd | 13470 | |
80626a55 DE |
13471 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13472 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13473 | correctly to find the file. */ | |
13474 | ||
b4f54984 | 13475 | if (dwarf_read_debug) |
80626a55 DE |
13476 | { |
13477 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13478 | kind, dwo_name, hex_string (signature)); | |
13479 | } | |
3019eac3 | 13480 | |
6656a72d DE |
13481 | /* This is a warning and not a complaint because it can be caused by |
13482 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13483 | { |
13484 | /* Print the name of the DWP file if we looked there, helps the user | |
13485 | better diagnose the problem. */ | |
791afaa2 | 13486 | std::string dwp_text; |
43942612 DE |
13487 | |
13488 | if (dwp_file != NULL) | |
791afaa2 TT |
13489 | dwp_text = string_printf (" [in DWP file %s]", |
13490 | lbasename (dwp_file->name)); | |
43942612 DE |
13491 | |
13492 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
13493 | " [in module %s]"), | |
13494 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13495 | dwp_text.c_str (), |
43942612 | 13496 | this_unit->is_debug_types ? "TU" : "CU", |
9c541725 | 13497 | to_underlying (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13498 | } |
3019eac3 | 13499 | return NULL; |
5fb290d7 DJ |
13500 | } |
13501 | ||
80626a55 DE |
13502 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13503 | See lookup_dwo_cutu_unit for details. */ | |
13504 | ||
13505 | static struct dwo_unit * | |
13506 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13507 | const char *dwo_name, const char *comp_dir, | |
13508 | ULONGEST signature) | |
13509 | { | |
13510 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13511 | } | |
13512 | ||
13513 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13514 | See lookup_dwo_cutu_unit for details. */ | |
13515 | ||
13516 | static struct dwo_unit * | |
13517 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13518 | const char *dwo_name, const char *comp_dir) | |
13519 | { | |
13520 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13521 | } | |
13522 | ||
89e63ee4 DE |
13523 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13524 | ||
13525 | static int | |
13526 | queue_and_load_dwo_tu (void **slot, void *info) | |
13527 | { | |
13528 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13529 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13530 | ULONGEST signature = dwo_unit->signature; | |
13531 | struct signatured_type *sig_type = | |
13532 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13533 | ||
13534 | if (sig_type != NULL) | |
13535 | { | |
13536 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13537 | ||
13538 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13539 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13540 | while processing PER_CU. */ | |
13541 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13542 | load_full_type_unit (sig_cu); | |
13543 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13544 | } | |
13545 | ||
13546 | return 1; | |
13547 | } | |
13548 | ||
13549 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13550 | The DWO may have the only definition of the type, though it may not be | |
13551 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13552 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13553 | ||
13554 | static void | |
13555 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13556 | { | |
13557 | struct dwo_unit *dwo_unit; | |
13558 | struct dwo_file *dwo_file; | |
13559 | ||
13560 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13561 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13562 | gdb_assert (per_cu->cu != NULL); |
13563 | ||
13564 | dwo_unit = per_cu->cu->dwo_unit; | |
13565 | gdb_assert (dwo_unit != NULL); | |
13566 | ||
13567 | dwo_file = dwo_unit->dwo_file; | |
13568 | if (dwo_file->tus != NULL) | |
13569 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13570 | } | |
13571 | ||
3019eac3 DE |
13572 | /* Free all resources associated with DWO_FILE. |
13573 | Close the DWO file and munmap the sections. | |
13574 | All memory should be on the objfile obstack. */ | |
348e048f DE |
13575 | |
13576 | static void | |
3019eac3 | 13577 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 13578 | { |
348e048f | 13579 | |
5c6fa7ab | 13580 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13581 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13582 | |
3019eac3 DE |
13583 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13584 | } | |
348e048f | 13585 | |
3019eac3 | 13586 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 13587 | |
3019eac3 DE |
13588 | static void |
13589 | free_dwo_file_cleanup (void *arg) | |
13590 | { | |
ed2dc618 SM |
13591 | struct free_dwo_file_cleanup_data *data |
13592 | = (struct free_dwo_file_cleanup_data *) arg; | |
13593 | struct objfile *objfile = data->dwarf2_per_objfile->objfile; | |
348e048f | 13594 | |
ed2dc618 SM |
13595 | free_dwo_file (data->dwo_file, objfile); |
13596 | ||
13597 | xfree (data); | |
3019eac3 | 13598 | } |
348e048f | 13599 | |
3019eac3 | 13600 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13601 | |
3019eac3 DE |
13602 | static int |
13603 | free_dwo_file_from_slot (void **slot, void *info) | |
13604 | { | |
13605 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
13606 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 13607 | |
3019eac3 | 13608 | free_dwo_file (dwo_file, objfile); |
348e048f | 13609 | |
3019eac3 DE |
13610 | return 1; |
13611 | } | |
348e048f | 13612 | |
3019eac3 | 13613 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13614 | |
3019eac3 DE |
13615 | static void |
13616 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13617 | { | |
13618 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13619 | } |
3019eac3 DE |
13620 | \f |
13621 | /* Read in various DIEs. */ | |
348e048f | 13622 | |
d389af10 | 13623 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13624 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13625 | already referenced by DW_AT_abstract_origin from the children of the | |
13626 | current DIE. */ | |
d389af10 JK |
13627 | |
13628 | static void | |
13629 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13630 | { | |
13631 | struct die_info *child_die; | |
791afaa2 | 13632 | sect_offset *offsetp; |
d389af10 JK |
13633 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13634 | struct die_info *origin_die; | |
13635 | /* Iterator of the ORIGIN_DIE children. */ | |
13636 | struct die_info *origin_child_die; | |
d389af10 | 13637 | struct attribute *attr; |
cd02d79d PA |
13638 | struct dwarf2_cu *origin_cu; |
13639 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13640 | |
13641 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13642 | if (!attr) | |
13643 | return; | |
13644 | ||
cd02d79d PA |
13645 | /* Note that following die references may follow to a die in a |
13646 | different cu. */ | |
13647 | ||
13648 | origin_cu = cu; | |
13649 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13650 | ||
13651 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13652 | symbols in. */ | |
13653 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13654 | origin_cu->list_in_scope = cu->list_in_scope; | |
13655 | ||
edb3359d DJ |
13656 | if (die->tag != origin_die->tag |
13657 | && !(die->tag == DW_TAG_inlined_subroutine | |
13658 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
13659 | complaint (&symfile_complaints, |
13660 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
9c541725 PA |
13661 | to_underlying (die->sect_off), |
13662 | to_underlying (origin_die->sect_off)); | |
d389af10 | 13663 | |
791afaa2 | 13664 | std::vector<sect_offset> offsets; |
d389af10 | 13665 | |
3ea89b92 PMR |
13666 | for (child_die = die->child; |
13667 | child_die && child_die->tag; | |
13668 | child_die = sibling_die (child_die)) | |
13669 | { | |
13670 | struct die_info *child_origin_die; | |
13671 | struct dwarf2_cu *child_origin_cu; | |
13672 | ||
13673 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13674 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13675 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13676 | present in the abstract instance but not referenced in the concrete | |
13677 | one. */ | |
216f72a1 JK |
13678 | if (child_die->tag == DW_TAG_call_site |
13679 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13680 | continue; |
13681 | ||
c38f313d DJ |
13682 | /* For each CHILD_DIE, find the corresponding child of |
13683 | ORIGIN_DIE. If there is more than one layer of | |
13684 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13685 | but GCC versions at least through 4.4 generate this (GCC PR | |
13686 | 40573). */ | |
3ea89b92 PMR |
13687 | child_origin_die = child_die; |
13688 | child_origin_cu = cu; | |
c38f313d DJ |
13689 | while (1) |
13690 | { | |
cd02d79d PA |
13691 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13692 | child_origin_cu); | |
c38f313d DJ |
13693 | if (attr == NULL) |
13694 | break; | |
cd02d79d PA |
13695 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13696 | &child_origin_cu); | |
c38f313d DJ |
13697 | } |
13698 | ||
d389af10 JK |
13699 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13700 | counterpart may exist. */ | |
c38f313d | 13701 | if (child_origin_die != child_die) |
d389af10 | 13702 | { |
edb3359d DJ |
13703 | if (child_die->tag != child_origin_die->tag |
13704 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13705 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
13706 | complaint (&symfile_complaints, |
13707 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
9c541725 PA |
13708 | "different tags"), |
13709 | to_underlying (child_die->sect_off), | |
13710 | to_underlying (child_origin_die->sect_off)); | |
c38f313d DJ |
13711 | if (child_origin_die->parent != origin_die) |
13712 | complaint (&symfile_complaints, | |
13713 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
9c541725 PA |
13714 | "different parents"), |
13715 | to_underlying (child_die->sect_off), | |
13716 | to_underlying (child_origin_die->sect_off)); | |
c38f313d | 13717 | else |
791afaa2 | 13718 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13719 | } |
d389af10 | 13720 | } |
791afaa2 TT |
13721 | std::sort (offsets.begin (), offsets.end ()); |
13722 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13723 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13724 | if (offsetp[-1] == *offsetp) |
3e43a32a MS |
13725 | complaint (&symfile_complaints, |
13726 | _("Multiple children of DIE 0x%x refer " | |
13727 | "to DIE 0x%x as their abstract origin"), | |
9c541725 | 13728 | to_underlying (die->sect_off), to_underlying (*offsetp)); |
d389af10 | 13729 | |
791afaa2 | 13730 | offsetp = offsets.data (); |
d389af10 JK |
13731 | origin_child_die = origin_die->child; |
13732 | while (origin_child_die && origin_child_die->tag) | |
13733 | { | |
13734 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13735 | while (offsetp < offsets_end |
9c541725 | 13736 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13737 | offsetp++; |
b64f50a1 | 13738 | if (offsetp >= offsets_end |
9c541725 | 13739 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13740 | { |
adde2bff DE |
13741 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13742 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13743 | This can happen with mutually referenced abstract_origins. | |
13744 | PR 16581. */ | |
13745 | if (!origin_child_die->in_process) | |
13746 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13747 | } |
13748 | origin_child_die = sibling_die (origin_child_die); | |
13749 | } | |
cd02d79d | 13750 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13751 | } |
13752 | ||
c906108c | 13753 | static void |
e7c27a73 | 13754 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13755 | { |
518817b3 | 13756 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13757 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13758 | struct context_stack *newobj; |
c906108c SS |
13759 | CORE_ADDR lowpc; |
13760 | CORE_ADDR highpc; | |
13761 | struct die_info *child_die; | |
edb3359d | 13762 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13763 | const char *name; |
e142c38c | 13764 | CORE_ADDR baseaddr; |
801e3a5b | 13765 | struct block *block; |
edb3359d | 13766 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13767 | std::vector<struct symbol *> template_args; |
34eaf542 | 13768 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13769 | |
13770 | if (inlined_func) | |
13771 | { | |
13772 | /* If we do not have call site information, we can't show the | |
13773 | caller of this inlined function. That's too confusing, so | |
13774 | only use the scope for local variables. */ | |
13775 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13776 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13777 | if (call_line == NULL || call_file == NULL) | |
13778 | { | |
13779 | read_lexical_block_scope (die, cu); | |
13780 | return; | |
13781 | } | |
13782 | } | |
c906108c | 13783 | |
e142c38c DJ |
13784 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13785 | ||
94af9270 | 13786 | name = dwarf2_name (die, cu); |
c906108c | 13787 | |
e8d05480 JB |
13788 | /* Ignore functions with missing or empty names. These are actually |
13789 | illegal according to the DWARF standard. */ | |
13790 | if (name == NULL) | |
13791 | { | |
13792 | complaint (&symfile_complaints, | |
b64f50a1 | 13793 | _("missing name for subprogram DIE at %d"), |
9c541725 | 13794 | to_underlying (die->sect_off)); |
e8d05480 JB |
13795 | return; |
13796 | } | |
13797 | ||
13798 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13799 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13800 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13801 | { |
ae4d0c03 PM |
13802 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13803 | if (!attr || !DW_UNSND (attr)) | |
13804 | complaint (&symfile_complaints, | |
3e43a32a MS |
13805 | _("cannot get low and high bounds " |
13806 | "for subprogram DIE at %d"), | |
9c541725 | 13807 | to_underlying (die->sect_off)); |
e8d05480 JB |
13808 | return; |
13809 | } | |
c906108c | 13810 | |
3e29f34a MR |
13811 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13812 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13813 | |
34eaf542 TT |
13814 | /* If we have any template arguments, then we must allocate a |
13815 | different sort of symbol. */ | |
13816 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13817 | { | |
13818 | if (child_die->tag == DW_TAG_template_type_param | |
13819 | || child_die->tag == DW_TAG_template_value_param) | |
13820 | { | |
e623cf5d | 13821 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13822 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13823 | break; |
13824 | } | |
13825 | } | |
13826 | ||
fe978cb0 | 13827 | newobj = push_context (0, lowpc); |
5e2db402 TT |
13828 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13829 | (struct symbol *) templ_func); | |
4c2df51b | 13830 | |
4cecd739 DJ |
13831 | /* If there is a location expression for DW_AT_frame_base, record |
13832 | it. */ | |
e142c38c | 13833 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13834 | if (attr) |
fe978cb0 | 13835 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13836 | |
63e43d3a PMR |
13837 | /* If there is a location for the static link, record it. */ |
13838 | newobj->static_link = NULL; | |
13839 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13840 | if (attr) | |
13841 | { | |
224c3ddb SM |
13842 | newobj->static_link |
13843 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13844 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13845 | } | |
13846 | ||
e142c38c | 13847 | cu->list_in_scope = &local_symbols; |
c906108c | 13848 | |
639d11d3 | 13849 | if (die->child != NULL) |
c906108c | 13850 | { |
639d11d3 | 13851 | child_die = die->child; |
c906108c SS |
13852 | while (child_die && child_die->tag) |
13853 | { | |
34eaf542 TT |
13854 | if (child_die->tag == DW_TAG_template_type_param |
13855 | || child_die->tag == DW_TAG_template_value_param) | |
13856 | { | |
13857 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13858 | ||
f1078f66 | 13859 | if (arg != NULL) |
2f4732b0 | 13860 | template_args.push_back (arg); |
34eaf542 TT |
13861 | } |
13862 | else | |
13863 | process_die (child_die, cu); | |
c906108c SS |
13864 | child_die = sibling_die (child_die); |
13865 | } | |
13866 | } | |
13867 | ||
d389af10 JK |
13868 | inherit_abstract_dies (die, cu); |
13869 | ||
4a811a97 UW |
13870 | /* If we have a DW_AT_specification, we might need to import using |
13871 | directives from the context of the specification DIE. See the | |
13872 | comment in determine_prefix. */ | |
13873 | if (cu->language == language_cplus | |
13874 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13875 | { | |
13876 | struct dwarf2_cu *spec_cu = cu; | |
13877 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13878 | ||
13879 | while (spec_die) | |
13880 | { | |
13881 | child_die = spec_die->child; | |
13882 | while (child_die && child_die->tag) | |
13883 | { | |
13884 | if (child_die->tag == DW_TAG_imported_module) | |
13885 | process_die (child_die, spec_cu); | |
13886 | child_die = sibling_die (child_die); | |
13887 | } | |
13888 | ||
13889 | /* In some cases, GCC generates specification DIEs that | |
13890 | themselves contain DW_AT_specification attributes. */ | |
13891 | spec_die = die_specification (spec_die, &spec_cu); | |
13892 | } | |
13893 | } | |
13894 | ||
fe978cb0 | 13895 | newobj = pop_context (); |
c906108c | 13896 | /* Make a block for the local symbols within. */ |
fe978cb0 | 13897 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 13898 | newobj->static_link, lowpc, highpc); |
801e3a5b | 13899 | |
df8a16a1 | 13900 | /* For C++, set the block's scope. */ |
45280282 IB |
13901 | if ((cu->language == language_cplus |
13902 | || cu->language == language_fortran | |
c44af4eb TT |
13903 | || cu->language == language_d |
13904 | || cu->language == language_rust) | |
4d4ec4e5 | 13905 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13906 | block_set_scope (block, determine_prefix (die, cu), |
13907 | &objfile->objfile_obstack); | |
df8a16a1 | 13908 | |
801e3a5b JB |
13909 | /* If we have address ranges, record them. */ |
13910 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13911 | |
fe978cb0 | 13912 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 13913 | |
34eaf542 | 13914 | /* Attach template arguments to function. */ |
2f4732b0 | 13915 | if (!template_args.empty ()) |
34eaf542 TT |
13916 | { |
13917 | gdb_assert (templ_func != NULL); | |
13918 | ||
2f4732b0 | 13919 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13920 | templ_func->template_arguments |
8d749320 SM |
13921 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13922 | templ_func->n_template_arguments); | |
34eaf542 | 13923 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13924 | template_args.data (), |
34eaf542 | 13925 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
34eaf542 TT |
13926 | } |
13927 | ||
208d8187 JB |
13928 | /* In C++, we can have functions nested inside functions (e.g., when |
13929 | a function declares a class that has methods). This means that | |
13930 | when we finish processing a function scope, we may need to go | |
13931 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 13932 | local_symbols = newobj->locals; |
22cee43f | 13933 | local_using_directives = newobj->local_using_directives; |
208d8187 | 13934 | |
921e78cf JB |
13935 | /* If we've finished processing a top-level function, subsequent |
13936 | symbols go in the file symbol list. */ | |
13937 | if (outermost_context_p ()) | |
e142c38c | 13938 | cu->list_in_scope = &file_symbols; |
c906108c SS |
13939 | } |
13940 | ||
13941 | /* Process all the DIES contained within a lexical block scope. Start | |
13942 | a new scope, process the dies, and then close the scope. */ | |
13943 | ||
13944 | static void | |
e7c27a73 | 13945 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13946 | { |
518817b3 | 13947 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13948 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13949 | struct context_stack *newobj; |
c906108c SS |
13950 | CORE_ADDR lowpc, highpc; |
13951 | struct die_info *child_die; | |
e142c38c DJ |
13952 | CORE_ADDR baseaddr; |
13953 | ||
13954 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13955 | |
13956 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13957 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13958 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13959 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13960 | describe ranges. */ |
e385593e JK |
13961 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13962 | { | |
13963 | case PC_BOUNDS_NOT_PRESENT: | |
13964 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13965 | there was no wrapping by that DW_TAG_lexical_block. | |
13966 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13967 | for (child_die = die->child; | |
13968 | child_die != NULL && child_die->tag; | |
13969 | child_die = sibling_die (child_die)) | |
13970 | process_die (child_die, cu); | |
13971 | return; | |
13972 | case PC_BOUNDS_INVALID: | |
13973 | return; | |
13974 | } | |
3e29f34a MR |
13975 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13976 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
13977 | |
13978 | push_context (0, lowpc); | |
639d11d3 | 13979 | if (die->child != NULL) |
c906108c | 13980 | { |
639d11d3 | 13981 | child_die = die->child; |
c906108c SS |
13982 | while (child_die && child_die->tag) |
13983 | { | |
e7c27a73 | 13984 | process_die (child_die, cu); |
c906108c SS |
13985 | child_die = sibling_die (child_die); |
13986 | } | |
13987 | } | |
3ea89b92 | 13988 | inherit_abstract_dies (die, cu); |
fe978cb0 | 13989 | newobj = pop_context (); |
c906108c | 13990 | |
22cee43f | 13991 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 13992 | { |
801e3a5b | 13993 | struct block *block |
63e43d3a | 13994 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 13995 | newobj->start_addr, highpc); |
801e3a5b JB |
13996 | |
13997 | /* Note that recording ranges after traversing children, as we | |
13998 | do here, means that recording a parent's ranges entails | |
13999 | walking across all its children's ranges as they appear in | |
14000 | the address map, which is quadratic behavior. | |
14001 | ||
14002 | It would be nicer to record the parent's ranges before | |
14003 | traversing its children, simply overriding whatever you find | |
14004 | there. But since we don't even decide whether to create a | |
14005 | block until after we've traversed its children, that's hard | |
14006 | to do. */ | |
14007 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 14008 | } |
fe978cb0 | 14009 | local_symbols = newobj->locals; |
22cee43f | 14010 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
14011 | } |
14012 | ||
216f72a1 | 14013 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
14014 | |
14015 | static void | |
14016 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
14017 | { | |
518817b3 | 14018 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
14019 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14020 | CORE_ADDR pc, baseaddr; | |
14021 | struct attribute *attr; | |
14022 | struct call_site *call_site, call_site_local; | |
14023 | void **slot; | |
14024 | int nparams; | |
14025 | struct die_info *child_die; | |
14026 | ||
14027 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14028 | ||
216f72a1 JK |
14029 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
14030 | if (attr == NULL) | |
14031 | { | |
14032 | /* This was a pre-DWARF-5 GNU extension alias | |
14033 | for DW_AT_call_return_pc. */ | |
14034 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
14035 | } | |
96408a79 SA |
14036 | if (!attr) |
14037 | { | |
14038 | complaint (&symfile_complaints, | |
216f72a1 | 14039 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
96408a79 | 14040 | "DIE 0x%x [in module %s]"), |
9c541725 | 14041 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14042 | return; |
14043 | } | |
31aa7e4e | 14044 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 14045 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
14046 | |
14047 | if (cu->call_site_htab == NULL) | |
14048 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
14049 | NULL, &objfile->objfile_obstack, | |
14050 | hashtab_obstack_allocate, NULL); | |
14051 | call_site_local.pc = pc; | |
14052 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
14053 | if (*slot != NULL) | |
14054 | { | |
14055 | complaint (&symfile_complaints, | |
216f72a1 | 14056 | _("Duplicate PC %s for DW_TAG_call_site " |
96408a79 | 14057 | "DIE 0x%x [in module %s]"), |
9c541725 | 14058 | paddress (gdbarch, pc), to_underlying (die->sect_off), |
4262abfb | 14059 | objfile_name (objfile)); |
96408a79 SA |
14060 | return; |
14061 | } | |
14062 | ||
14063 | /* Count parameters at the caller. */ | |
14064 | ||
14065 | nparams = 0; | |
14066 | for (child_die = die->child; child_die && child_die->tag; | |
14067 | child_die = sibling_die (child_die)) | |
14068 | { | |
216f72a1 JK |
14069 | if (child_die->tag != DW_TAG_call_site_parameter |
14070 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14071 | { |
14072 | complaint (&symfile_complaints, | |
216f72a1 JK |
14073 | _("Tag %d is not DW_TAG_call_site_parameter in " |
14074 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 | 14075 | child_die->tag, to_underlying (child_die->sect_off), |
4262abfb | 14076 | objfile_name (objfile)); |
96408a79 SA |
14077 | continue; |
14078 | } | |
14079 | ||
14080 | nparams++; | |
14081 | } | |
14082 | ||
224c3ddb SM |
14083 | call_site |
14084 | = ((struct call_site *) | |
14085 | obstack_alloc (&objfile->objfile_obstack, | |
14086 | sizeof (*call_site) | |
14087 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
14088 | *slot = call_site; |
14089 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14090 | call_site->pc = pc; | |
14091 | ||
216f72a1 JK |
14092 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14093 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14094 | { |
14095 | struct die_info *func_die; | |
14096 | ||
14097 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14098 | for (func_die = die->parent; | |
14099 | func_die && func_die->tag != DW_TAG_subprogram | |
14100 | && func_die->tag != DW_TAG_subroutine_type; | |
14101 | func_die = func_die->parent); | |
14102 | ||
216f72a1 JK |
14103 | /* DW_AT_call_all_calls is a superset |
14104 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14105 | if (func_die |
216f72a1 | 14106 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14107 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14108 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14109 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14110 | { | |
14111 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14112 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14113 | both the initial caller containing the real return address PC and | |
14114 | the final callee containing the current PC of a chain of tail | |
14115 | calls do not need to have the tail call list complete. But any | |
14116 | function candidate for a virtual tail call frame searched via | |
14117 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14118 | determined unambiguously. */ | |
14119 | } | |
14120 | else | |
14121 | { | |
14122 | struct type *func_type = NULL; | |
14123 | ||
14124 | if (func_die) | |
14125 | func_type = get_die_type (func_die, cu); | |
14126 | if (func_type != NULL) | |
14127 | { | |
14128 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14129 | ||
14130 | /* Enlist this call site to the function. */ | |
14131 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14132 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14133 | } | |
14134 | else | |
14135 | complaint (&symfile_complaints, | |
216f72a1 | 14136 | _("Cannot find function owning DW_TAG_call_site " |
96408a79 | 14137 | "DIE 0x%x [in module %s]"), |
9c541725 | 14138 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14139 | } |
14140 | } | |
14141 | ||
216f72a1 JK |
14142 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14143 | if (attr == NULL) | |
14144 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14145 | if (attr == NULL) | |
14146 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14147 | if (attr == NULL) |
216f72a1 JK |
14148 | { |
14149 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14150 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14151 | } | |
96408a79 SA |
14152 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14153 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14154 | /* Keep NULL DWARF_BLOCK. */; | |
14155 | else if (attr_form_is_block (attr)) | |
14156 | { | |
14157 | struct dwarf2_locexpr_baton *dlbaton; | |
14158 | ||
8d749320 | 14159 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14160 | dlbaton->data = DW_BLOCK (attr)->data; |
14161 | dlbaton->size = DW_BLOCK (attr)->size; | |
14162 | dlbaton->per_cu = cu->per_cu; | |
14163 | ||
14164 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14165 | } | |
7771576e | 14166 | else if (attr_form_is_ref (attr)) |
96408a79 | 14167 | { |
96408a79 SA |
14168 | struct dwarf2_cu *target_cu = cu; |
14169 | struct die_info *target_die; | |
14170 | ||
ac9ec31b | 14171 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14172 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14173 | if (die_is_declaration (target_die, target_cu)) |
14174 | { | |
7d45c7c3 | 14175 | const char *target_physname; |
9112db09 JK |
14176 | |
14177 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14178 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14179 | if (target_physname == NULL) |
9112db09 | 14180 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
14181 | if (target_physname == NULL) |
14182 | complaint (&symfile_complaints, | |
216f72a1 | 14183 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 14184 | "physname, for referencing DIE 0x%x [in module %s]"), |
9c541725 | 14185 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 | 14186 | else |
7d455152 | 14187 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14188 | } |
14189 | else | |
14190 | { | |
14191 | CORE_ADDR lowpc; | |
14192 | ||
14193 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14194 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14195 | <= PC_BOUNDS_INVALID) |
96408a79 | 14196 | complaint (&symfile_complaints, |
216f72a1 | 14197 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 14198 | "low pc, for referencing DIE 0x%x [in module %s]"), |
9c541725 | 14199 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 | 14200 | else |
3e29f34a MR |
14201 | { |
14202 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14203 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14204 | } | |
96408a79 SA |
14205 | } |
14206 | } | |
14207 | else | |
14208 | complaint (&symfile_complaints, | |
216f72a1 | 14209 | _("DW_TAG_call_site DW_AT_call_target is neither " |
96408a79 | 14210 | "block nor reference, for DIE 0x%x [in module %s]"), |
9c541725 | 14211 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14212 | |
14213 | call_site->per_cu = cu->per_cu; | |
14214 | ||
14215 | for (child_die = die->child; | |
14216 | child_die && child_die->tag; | |
14217 | child_die = sibling_die (child_die)) | |
14218 | { | |
96408a79 | 14219 | struct call_site_parameter *parameter; |
1788b2d3 | 14220 | struct attribute *loc, *origin; |
96408a79 | 14221 | |
216f72a1 JK |
14222 | if (child_die->tag != DW_TAG_call_site_parameter |
14223 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14224 | { |
14225 | /* Already printed the complaint above. */ | |
14226 | continue; | |
14227 | } | |
14228 | ||
14229 | gdb_assert (call_site->parameter_count < nparams); | |
14230 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14231 | ||
1788b2d3 JK |
14232 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14233 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14234 | register is contained in DW_AT_call_value. */ |
96408a79 | 14235 | |
24c5c679 | 14236 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14237 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14238 | if (origin == NULL) | |
14239 | { | |
14240 | /* This was a pre-DWARF-5 GNU extension alias | |
14241 | for DW_AT_call_parameter. */ | |
14242 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14243 | } | |
7771576e | 14244 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14245 | { |
1788b2d3 | 14246 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14247 | |
14248 | sect_offset sect_off | |
14249 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14250 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14251 | { |
14252 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14253 | binding can be done only inside one CU. Such referenced DIE | |
14254 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
14255 | complaint (&symfile_complaints, | |
216f72a1 JK |
14256 | _("DW_AT_call_parameter offset is not in CU for " |
14257 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
14258 | to_underlying (child_die->sect_off), |
14259 | objfile_name (objfile)); | |
d76b7dbc JK |
14260 | continue; |
14261 | } | |
9c541725 PA |
14262 | parameter->u.param_cu_off |
14263 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14264 | } |
14265 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
14266 | { |
14267 | complaint (&symfile_complaints, | |
14268 | _("No DW_FORM_block* DW_AT_location for " | |
216f72a1 | 14269 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), |
9c541725 | 14270 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14271 | continue; |
14272 | } | |
24c5c679 | 14273 | else |
96408a79 | 14274 | { |
24c5c679 JK |
14275 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14276 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14277 | if (parameter->u.dwarf_reg != -1) | |
14278 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14279 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14280 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14281 | ¶meter->u.fb_offset)) | |
14282 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14283 | else | |
14284 | { | |
14285 | complaint (&symfile_complaints, | |
14286 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
14287 | "for DW_FORM_block* DW_AT_location is supported for " | |
216f72a1 | 14288 | "DW_TAG_call_site child DIE 0x%x " |
24c5c679 | 14289 | "[in module %s]"), |
9c541725 PA |
14290 | to_underlying (child_die->sect_off), |
14291 | objfile_name (objfile)); | |
24c5c679 JK |
14292 | continue; |
14293 | } | |
96408a79 SA |
14294 | } |
14295 | ||
216f72a1 JK |
14296 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14297 | if (attr == NULL) | |
14298 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14299 | if (!attr_form_is_block (attr)) |
14300 | { | |
14301 | complaint (&symfile_complaints, | |
216f72a1 JK |
14302 | _("No DW_FORM_block* DW_AT_call_value for " |
14303 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
14304 | to_underlying (child_die->sect_off), |
14305 | objfile_name (objfile)); | |
96408a79 SA |
14306 | continue; |
14307 | } | |
14308 | parameter->value = DW_BLOCK (attr)->data; | |
14309 | parameter->value_size = DW_BLOCK (attr)->size; | |
14310 | ||
14311 | /* Parameters are not pre-cleared by memset above. */ | |
14312 | parameter->data_value = NULL; | |
14313 | parameter->data_value_size = 0; | |
14314 | call_site->parameter_count++; | |
14315 | ||
216f72a1 JK |
14316 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14317 | if (attr == NULL) | |
14318 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14319 | if (attr) |
14320 | { | |
14321 | if (!attr_form_is_block (attr)) | |
14322 | complaint (&symfile_complaints, | |
216f72a1 JK |
14323 | _("No DW_FORM_block* DW_AT_call_data_value for " |
14324 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
14325 | to_underlying (child_die->sect_off), |
14326 | objfile_name (objfile)); | |
96408a79 SA |
14327 | else |
14328 | { | |
14329 | parameter->data_value = DW_BLOCK (attr)->data; | |
14330 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14331 | } | |
14332 | } | |
14333 | } | |
14334 | } | |
14335 | ||
71a3c369 TT |
14336 | /* Helper function for read_variable. If DIE represents a virtual |
14337 | table, then return the type of the concrete object that is | |
14338 | associated with the virtual table. Otherwise, return NULL. */ | |
14339 | ||
14340 | static struct type * | |
14341 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14342 | { | |
14343 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14344 | if (attr == NULL) | |
14345 | return NULL; | |
14346 | ||
14347 | /* Find the type DIE. */ | |
14348 | struct die_info *type_die = NULL; | |
14349 | struct dwarf2_cu *type_cu = cu; | |
14350 | ||
14351 | if (attr_form_is_ref (attr)) | |
14352 | type_die = follow_die_ref (die, attr, &type_cu); | |
14353 | if (type_die == NULL) | |
14354 | return NULL; | |
14355 | ||
14356 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14357 | return NULL; | |
14358 | return die_containing_type (type_die, type_cu); | |
14359 | } | |
14360 | ||
14361 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14362 | ||
14363 | static void | |
14364 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14365 | { | |
14366 | struct rust_vtable_symbol *storage = NULL; | |
14367 | ||
14368 | if (cu->language == language_rust) | |
14369 | { | |
14370 | struct type *containing_type = rust_containing_type (die, cu); | |
14371 | ||
14372 | if (containing_type != NULL) | |
14373 | { | |
518817b3 | 14374 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14375 | |
14376 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14377 | struct rust_vtable_symbol); | |
14378 | initialize_objfile_symbol (storage); | |
14379 | storage->concrete_type = containing_type; | |
cf724bc9 | 14380 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14381 | } |
14382 | } | |
14383 | ||
5e2db402 | 14384 | new_symbol (die, NULL, cu, storage); |
71a3c369 TT |
14385 | } |
14386 | ||
43988095 JK |
14387 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14388 | reading .debug_rnglists. | |
14389 | Callback's type should be: | |
14390 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14391 | Return true if the attributes are present and valid, otherwise, | |
14392 | return false. */ | |
14393 | ||
14394 | template <typename Callback> | |
14395 | static bool | |
14396 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14397 | Callback &&callback) | |
14398 | { | |
ed2dc618 | 14399 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14400 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14401 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14402 | bfd *obfd = objfile->obfd; |
43988095 JK |
14403 | /* Base address selection entry. */ |
14404 | CORE_ADDR base; | |
14405 | int found_base; | |
43988095 | 14406 | const gdb_byte *buffer; |
43988095 JK |
14407 | CORE_ADDR baseaddr; |
14408 | bool overflow = false; | |
14409 | ||
14410 | found_base = cu->base_known; | |
14411 | base = cu->base_address; | |
14412 | ||
14413 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14414 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14415 | { | |
14416 | complaint (&symfile_complaints, | |
14417 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14418 | offset); | |
14419 | return false; | |
14420 | } | |
14421 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14422 | ||
14423 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14424 | ||
14425 | while (1) | |
14426 | { | |
7814882a JK |
14427 | /* Initialize it due to a false compiler warning. */ |
14428 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14429 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14430 | + dwarf2_per_objfile->rnglists.size); | |
14431 | unsigned int bytes_read; | |
14432 | ||
14433 | if (buffer == buf_end) | |
14434 | { | |
14435 | overflow = true; | |
14436 | break; | |
14437 | } | |
14438 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14439 | switch (rlet) | |
14440 | { | |
14441 | case DW_RLE_end_of_list: | |
14442 | break; | |
14443 | case DW_RLE_base_address: | |
14444 | if (buffer + cu->header.addr_size > buf_end) | |
14445 | { | |
14446 | overflow = true; | |
14447 | break; | |
14448 | } | |
14449 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14450 | found_base = 1; | |
14451 | buffer += bytes_read; | |
14452 | break; | |
14453 | case DW_RLE_start_length: | |
14454 | if (buffer + cu->header.addr_size > buf_end) | |
14455 | { | |
14456 | overflow = true; | |
14457 | break; | |
14458 | } | |
14459 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14460 | buffer += bytes_read; | |
14461 | range_end = (range_beginning | |
14462 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14463 | buffer += bytes_read; | |
14464 | if (buffer > buf_end) | |
14465 | { | |
14466 | overflow = true; | |
14467 | break; | |
14468 | } | |
14469 | break; | |
14470 | case DW_RLE_offset_pair: | |
14471 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14472 | buffer += bytes_read; | |
14473 | if (buffer > buf_end) | |
14474 | { | |
14475 | overflow = true; | |
14476 | break; | |
14477 | } | |
14478 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14479 | buffer += bytes_read; | |
14480 | if (buffer > buf_end) | |
14481 | { | |
14482 | overflow = true; | |
14483 | break; | |
14484 | } | |
14485 | break; | |
14486 | case DW_RLE_start_end: | |
14487 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14488 | { | |
14489 | overflow = true; | |
14490 | break; | |
14491 | } | |
14492 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14493 | buffer += bytes_read; | |
14494 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14495 | buffer += bytes_read; | |
14496 | break; | |
14497 | default: | |
14498 | complaint (&symfile_complaints, | |
14499 | _("Invalid .debug_rnglists data (no base address)")); | |
14500 | return false; | |
14501 | } | |
14502 | if (rlet == DW_RLE_end_of_list || overflow) | |
14503 | break; | |
14504 | if (rlet == DW_RLE_base_address) | |
14505 | continue; | |
14506 | ||
14507 | if (!found_base) | |
14508 | { | |
14509 | /* We have no valid base address for the ranges | |
14510 | data. */ | |
14511 | complaint (&symfile_complaints, | |
14512 | _("Invalid .debug_rnglists data (no base address)")); | |
14513 | return false; | |
14514 | } | |
14515 | ||
14516 | if (range_beginning > range_end) | |
14517 | { | |
14518 | /* Inverted range entries are invalid. */ | |
14519 | complaint (&symfile_complaints, | |
14520 | _("Invalid .debug_rnglists data (inverted range)")); | |
14521 | return false; | |
14522 | } | |
14523 | ||
14524 | /* Empty range entries have no effect. */ | |
14525 | if (range_beginning == range_end) | |
14526 | continue; | |
14527 | ||
14528 | range_beginning += base; | |
14529 | range_end += base; | |
14530 | ||
14531 | /* A not-uncommon case of bad debug info. | |
14532 | Don't pollute the addrmap with bad data. */ | |
14533 | if (range_beginning + baseaddr == 0 | |
14534 | && !dwarf2_per_objfile->has_section_at_zero) | |
14535 | { | |
14536 | complaint (&symfile_complaints, | |
14537 | _(".debug_rnglists entry has start address of zero" | |
14538 | " [in module %s]"), objfile_name (objfile)); | |
14539 | continue; | |
14540 | } | |
14541 | ||
14542 | callback (range_beginning, range_end); | |
14543 | } | |
14544 | ||
14545 | if (overflow) | |
14546 | { | |
14547 | complaint (&symfile_complaints, | |
14548 | _("Offset %d is not terminated " | |
14549 | "for DW_AT_ranges attribute"), | |
14550 | offset); | |
14551 | return false; | |
14552 | } | |
14553 | ||
14554 | return true; | |
14555 | } | |
14556 | ||
14557 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14558 | Callback's type should be: | |
14559 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14560 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14561 | |
43988095 | 14562 | template <typename Callback> |
43039443 | 14563 | static int |
5f46c5a5 | 14564 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14565 | Callback &&callback) |
43039443 | 14566 | { |
ed2dc618 | 14567 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14568 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14569 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14570 | struct comp_unit_head *cu_header = &cu->header; |
14571 | bfd *obfd = objfile->obfd; | |
14572 | unsigned int addr_size = cu_header->addr_size; | |
14573 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14574 | /* Base address selection entry. */ | |
14575 | CORE_ADDR base; | |
14576 | int found_base; | |
14577 | unsigned int dummy; | |
d521ce57 | 14578 | const gdb_byte *buffer; |
ff013f42 | 14579 | CORE_ADDR baseaddr; |
43039443 | 14580 | |
43988095 JK |
14581 | if (cu_header->version >= 5) |
14582 | return dwarf2_rnglists_process (offset, cu, callback); | |
14583 | ||
d00adf39 DE |
14584 | found_base = cu->base_known; |
14585 | base = cu->base_address; | |
43039443 | 14586 | |
be391dca | 14587 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14588 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
14589 | { |
14590 | complaint (&symfile_complaints, | |
14591 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14592 | offset); | |
14593 | return 0; | |
14594 | } | |
dce234bc | 14595 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14596 | |
e7030f15 | 14597 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14598 | |
43039443 JK |
14599 | while (1) |
14600 | { | |
14601 | CORE_ADDR range_beginning, range_end; | |
14602 | ||
14603 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14604 | buffer += addr_size; | |
14605 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14606 | buffer += addr_size; | |
14607 | offset += 2 * addr_size; | |
14608 | ||
14609 | /* An end of list marker is a pair of zero addresses. */ | |
14610 | if (range_beginning == 0 && range_end == 0) | |
14611 | /* Found the end of list entry. */ | |
14612 | break; | |
14613 | ||
14614 | /* Each base address selection entry is a pair of 2 values. | |
14615 | The first is the largest possible address, the second is | |
14616 | the base address. Check for a base address here. */ | |
14617 | if ((range_beginning & mask) == mask) | |
14618 | { | |
28d2bfb9 AB |
14619 | /* If we found the largest possible address, then we already |
14620 | have the base address in range_end. */ | |
14621 | base = range_end; | |
43039443 JK |
14622 | found_base = 1; |
14623 | continue; | |
14624 | } | |
14625 | ||
14626 | if (!found_base) | |
14627 | { | |
14628 | /* We have no valid base address for the ranges | |
14629 | data. */ | |
14630 | complaint (&symfile_complaints, | |
14631 | _("Invalid .debug_ranges data (no base address)")); | |
14632 | return 0; | |
14633 | } | |
14634 | ||
9277c30c UW |
14635 | if (range_beginning > range_end) |
14636 | { | |
14637 | /* Inverted range entries are invalid. */ | |
14638 | complaint (&symfile_complaints, | |
14639 | _("Invalid .debug_ranges data (inverted range)")); | |
14640 | return 0; | |
14641 | } | |
14642 | ||
14643 | /* Empty range entries have no effect. */ | |
14644 | if (range_beginning == range_end) | |
14645 | continue; | |
14646 | ||
43039443 JK |
14647 | range_beginning += base; |
14648 | range_end += base; | |
14649 | ||
01093045 DE |
14650 | /* A not-uncommon case of bad debug info. |
14651 | Don't pollute the addrmap with bad data. */ | |
14652 | if (range_beginning + baseaddr == 0 | |
14653 | && !dwarf2_per_objfile->has_section_at_zero) | |
14654 | { | |
14655 | complaint (&symfile_complaints, | |
14656 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 14657 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14658 | continue; |
14659 | } | |
14660 | ||
5f46c5a5 JK |
14661 | callback (range_beginning, range_end); |
14662 | } | |
14663 | ||
14664 | return 1; | |
14665 | } | |
14666 | ||
14667 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14668 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14669 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14670 | ||
14671 | static int | |
14672 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14673 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14674 | struct partial_symtab *ranges_pst) | |
14675 | { | |
518817b3 | 14676 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14677 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14678 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14679 | SECT_OFF_TEXT (objfile)); | |
14680 | int low_set = 0; | |
14681 | CORE_ADDR low = 0; | |
14682 | CORE_ADDR high = 0; | |
14683 | int retval; | |
14684 | ||
14685 | retval = dwarf2_ranges_process (offset, cu, | |
14686 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14687 | { | |
9277c30c | 14688 | if (ranges_pst != NULL) |
3e29f34a MR |
14689 | { |
14690 | CORE_ADDR lowpc; | |
14691 | CORE_ADDR highpc; | |
14692 | ||
14693 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14694 | range_beginning + baseaddr); | |
14695 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14696 | range_end + baseaddr); | |
14697 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
14698 | ranges_pst); | |
14699 | } | |
ff013f42 | 14700 | |
43039443 JK |
14701 | /* FIXME: This is recording everything as a low-high |
14702 | segment of consecutive addresses. We should have a | |
14703 | data structure for discontiguous block ranges | |
14704 | instead. */ | |
14705 | if (! low_set) | |
14706 | { | |
14707 | low = range_beginning; | |
14708 | high = range_end; | |
14709 | low_set = 1; | |
14710 | } | |
14711 | else | |
14712 | { | |
14713 | if (range_beginning < low) | |
14714 | low = range_beginning; | |
14715 | if (range_end > high) | |
14716 | high = range_end; | |
14717 | } | |
5f46c5a5 JK |
14718 | }); |
14719 | if (!retval) | |
14720 | return 0; | |
43039443 JK |
14721 | |
14722 | if (! low_set) | |
14723 | /* If the first entry is an end-of-list marker, the range | |
14724 | describes an empty scope, i.e. no instructions. */ | |
14725 | return 0; | |
14726 | ||
14727 | if (low_return) | |
14728 | *low_return = low; | |
14729 | if (high_return) | |
14730 | *high_return = high; | |
14731 | return 1; | |
14732 | } | |
14733 | ||
3a2b436a JK |
14734 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14735 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14736 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14737 | |
3a2b436a | 14738 | static enum pc_bounds_kind |
af34e669 | 14739 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14740 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14741 | struct partial_symtab *pst) | |
c906108c | 14742 | { |
518817b3 SM |
14743 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14744 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14745 | struct attribute *attr; |
91da1414 | 14746 | struct attribute *attr_high; |
af34e669 DJ |
14747 | CORE_ADDR low = 0; |
14748 | CORE_ADDR high = 0; | |
e385593e | 14749 | enum pc_bounds_kind ret; |
c906108c | 14750 | |
91da1414 MW |
14751 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14752 | if (attr_high) | |
af34e669 | 14753 | { |
e142c38c | 14754 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14755 | if (attr) |
91da1414 | 14756 | { |
31aa7e4e JB |
14757 | low = attr_value_as_address (attr); |
14758 | high = attr_value_as_address (attr_high); | |
14759 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14760 | high += low; | |
91da1414 | 14761 | } |
af34e669 DJ |
14762 | else |
14763 | /* Found high w/o low attribute. */ | |
e385593e | 14764 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14765 | |
14766 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14767 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14768 | } |
c906108c | 14769 | else |
af34e669 | 14770 | { |
e142c38c | 14771 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14772 | if (attr != NULL) |
14773 | { | |
ab435259 DE |
14774 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14775 | We take advantage of the fact that DW_AT_ranges does not appear | |
14776 | in DW_TAG_compile_unit of DWO files. */ | |
14777 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14778 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14779 | + (need_ranges_base | |
14780 | ? cu->ranges_base | |
14781 | : 0)); | |
2e3cf129 | 14782 | |
af34e669 | 14783 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14784 | .debug_ranges section. */ |
2e3cf129 | 14785 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14786 | return PC_BOUNDS_INVALID; |
43039443 | 14787 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14788 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14789 | } |
e385593e JK |
14790 | else |
14791 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14792 | } |
c906108c | 14793 | |
9373cf26 JK |
14794 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
14795 | if (high <= low) | |
e385593e | 14796 | return PC_BOUNDS_INVALID; |
c906108c SS |
14797 | |
14798 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14799 | eliminate duplicate copies of functions and vtables and such. | |
14800 | The linker will arbitrarily choose one and discard the others. | |
14801 | The AT_*_pc values for such functions refer to local labels in | |
14802 | these sections. If the section from that file was discarded, the | |
14803 | labels are not in the output, so the relocs get a value of 0. | |
14804 | If this is a discarded function, mark the pc bounds as invalid, | |
14805 | so that GDB will ignore it. */ | |
72dca2f5 | 14806 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14807 | return PC_BOUNDS_INVALID; |
c906108c SS |
14808 | |
14809 | *lowpc = low; | |
96408a79 SA |
14810 | if (highpc) |
14811 | *highpc = high; | |
af34e669 | 14812 | return ret; |
c906108c SS |
14813 | } |
14814 | ||
b084d499 JB |
14815 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14816 | its low and high PC addresses. Do nothing if these addresses could not | |
14817 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14818 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14819 | ||
14820 | static void | |
14821 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14822 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14823 | struct dwarf2_cu *cu) | |
14824 | { | |
14825 | CORE_ADDR low, high; | |
14826 | struct die_info *child = die->child; | |
14827 | ||
e385593e | 14828 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14829 | { |
325fac50 PA |
14830 | *lowpc = std::min (*lowpc, low); |
14831 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14832 | } |
14833 | ||
14834 | /* If the language does not allow nested subprograms (either inside | |
14835 | subprograms or lexical blocks), we're done. */ | |
14836 | if (cu->language != language_ada) | |
14837 | return; | |
6e70227d | 14838 | |
b084d499 JB |
14839 | /* Check all the children of the given DIE. If it contains nested |
14840 | subprograms, then check their pc bounds. Likewise, we need to | |
14841 | check lexical blocks as well, as they may also contain subprogram | |
14842 | definitions. */ | |
14843 | while (child && child->tag) | |
14844 | { | |
14845 | if (child->tag == DW_TAG_subprogram | |
14846 | || child->tag == DW_TAG_lexical_block) | |
14847 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14848 | child = sibling_die (child); | |
14849 | } | |
14850 | } | |
14851 | ||
fae299cd DC |
14852 | /* Get the low and high pc's represented by the scope DIE, and store |
14853 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14854 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14855 | ||
14856 | static void | |
14857 | get_scope_pc_bounds (struct die_info *die, | |
14858 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14859 | struct dwarf2_cu *cu) | |
14860 | { | |
14861 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14862 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14863 | CORE_ADDR current_low, current_high; | |
14864 | ||
3a2b436a | 14865 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14866 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14867 | { |
14868 | best_low = current_low; | |
14869 | best_high = current_high; | |
14870 | } | |
14871 | else | |
14872 | { | |
14873 | struct die_info *child = die->child; | |
14874 | ||
14875 | while (child && child->tag) | |
14876 | { | |
14877 | switch (child->tag) { | |
14878 | case DW_TAG_subprogram: | |
b084d499 | 14879 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14880 | break; |
14881 | case DW_TAG_namespace: | |
f55ee35c | 14882 | case DW_TAG_module: |
fae299cd DC |
14883 | /* FIXME: carlton/2004-01-16: Should we do this for |
14884 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14885 | that current GCC's always emit the DIEs corresponding | |
14886 | to definitions of methods of classes as children of a | |
14887 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14888 | the DIEs giving the declarations, which could be | |
14889 | anywhere). But I don't see any reason why the | |
14890 | standards says that they have to be there. */ | |
14891 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14892 | ||
14893 | if (current_low != ((CORE_ADDR) -1)) | |
14894 | { | |
325fac50 PA |
14895 | best_low = std::min (best_low, current_low); |
14896 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14897 | } |
14898 | break; | |
14899 | default: | |
0963b4bd | 14900 | /* Ignore. */ |
fae299cd DC |
14901 | break; |
14902 | } | |
14903 | ||
14904 | child = sibling_die (child); | |
14905 | } | |
14906 | } | |
14907 | ||
14908 | *lowpc = best_low; | |
14909 | *highpc = best_high; | |
14910 | } | |
14911 | ||
801e3a5b JB |
14912 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14913 | in DIE. */ | |
380bca97 | 14914 | |
801e3a5b JB |
14915 | static void |
14916 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14917 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14918 | { | |
518817b3 | 14919 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14920 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14921 | struct attribute *attr; |
91da1414 | 14922 | struct attribute *attr_high; |
801e3a5b | 14923 | |
91da1414 MW |
14924 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14925 | if (attr_high) | |
801e3a5b | 14926 | { |
801e3a5b JB |
14927 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14928 | if (attr) | |
14929 | { | |
31aa7e4e JB |
14930 | CORE_ADDR low = attr_value_as_address (attr); |
14931 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14932 | ||
14933 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14934 | high += low; | |
9a619af0 | 14935 | |
3e29f34a MR |
14936 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14937 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
14938 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
14939 | } |
14940 | } | |
14941 | ||
14942 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14943 | if (attr) | |
14944 | { | |
ab435259 DE |
14945 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14946 | We take advantage of the fact that DW_AT_ranges does not appear | |
14947 | in DW_TAG_compile_unit of DWO files. */ | |
14948 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14949 | |
14950 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14951 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14952 | unsigned long offset = (DW_UNSND (attr) |
14953 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 14954 | const gdb_byte *buffer; |
801e3a5b JB |
14955 | |
14956 | /* For some target architectures, but not others, the | |
14957 | read_address function sign-extends the addresses it returns. | |
14958 | To recognize base address selection entries, we need a | |
14959 | mask. */ | |
14960 | unsigned int addr_size = cu->header.addr_size; | |
14961 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14962 | ||
14963 | /* The base address, to which the next pair is relative. Note | |
14964 | that this 'base' is a DWARF concept: most entries in a range | |
14965 | list are relative, to reduce the number of relocs against the | |
14966 | debugging information. This is separate from this function's | |
14967 | 'baseaddr' argument, which GDB uses to relocate debugging | |
14968 | information from a shared library based on the address at | |
14969 | which the library was loaded. */ | |
d00adf39 DE |
14970 | CORE_ADDR base = cu->base_address; |
14971 | int base_known = cu->base_known; | |
801e3a5b | 14972 | |
5f46c5a5 JK |
14973 | dwarf2_ranges_process (offset, cu, |
14974 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14975 | { | |
58fdfd2c JK |
14976 | start += baseaddr; |
14977 | end += baseaddr; | |
5f46c5a5 JK |
14978 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14979 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
14980 | record_block_range (block, start, end - 1); | |
14981 | }); | |
801e3a5b JB |
14982 | } |
14983 | } | |
14984 | ||
685b1105 JK |
14985 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14986 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14987 | |
685b1105 JK |
14988 | static void |
14989 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14990 | { |
38360086 | 14991 | int major, minor; |
60d5a603 JK |
14992 | |
14993 | if (cu->producer == NULL) | |
14994 | { | |
14995 | /* For unknown compilers expect their behavior is DWARF version | |
14996 | compliant. | |
14997 | ||
14998 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14999 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
15000 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
15001 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
15002 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 15003 | } |
b1ffba5a | 15004 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 15005 | { |
38360086 MW |
15006 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
15007 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 15008 | } |
5230b05a WT |
15009 | else if (producer_is_icc (cu->producer, &major, &minor)) |
15010 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
15011 | else |
15012 | { | |
15013 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
15014 | compliant. */ | |
60d5a603 JK |
15015 | } |
15016 | ||
ba919b58 | 15017 | cu->checked_producer = 1; |
685b1105 | 15018 | } |
ba919b58 | 15019 | |
685b1105 JK |
15020 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
15021 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
15022 | during 4.6.0 experimental. */ | |
15023 | ||
15024 | static int | |
15025 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
15026 | { | |
15027 | if (!cu->checked_producer) | |
15028 | check_producer (cu); | |
15029 | ||
15030 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
15031 | } |
15032 | ||
15033 | /* Return the default accessibility type if it is not overriden by | |
15034 | DW_AT_accessibility. */ | |
15035 | ||
15036 | static enum dwarf_access_attribute | |
15037 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
15038 | { | |
15039 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
15040 | { | |
15041 | /* The default DWARF 2 accessibility for members is public, the default | |
15042 | accessibility for inheritance is private. */ | |
15043 | ||
15044 | if (die->tag != DW_TAG_inheritance) | |
15045 | return DW_ACCESS_public; | |
15046 | else | |
15047 | return DW_ACCESS_private; | |
15048 | } | |
15049 | else | |
15050 | { | |
15051 | /* DWARF 3+ defines the default accessibility a different way. The same | |
15052 | rules apply now for DW_TAG_inheritance as for the members and it only | |
15053 | depends on the container kind. */ | |
15054 | ||
15055 | if (die->parent->tag == DW_TAG_class_type) | |
15056 | return DW_ACCESS_private; | |
15057 | else | |
15058 | return DW_ACCESS_public; | |
15059 | } | |
15060 | } | |
15061 | ||
74ac6d43 TT |
15062 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
15063 | offset. If the attribute was not found return 0, otherwise return | |
15064 | 1. If it was found but could not properly be handled, set *OFFSET | |
15065 | to 0. */ | |
15066 | ||
15067 | static int | |
15068 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15069 | LONGEST *offset) | |
15070 | { | |
15071 | struct attribute *attr; | |
15072 | ||
15073 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15074 | if (attr != NULL) | |
15075 | { | |
15076 | *offset = 0; | |
15077 | ||
15078 | /* Note that we do not check for a section offset first here. | |
15079 | This is because DW_AT_data_member_location is new in DWARF 4, | |
15080 | so if we see it, we can assume that a constant form is really | |
15081 | a constant and not a section offset. */ | |
15082 | if (attr_form_is_constant (attr)) | |
15083 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
15084 | else if (attr_form_is_section_offset (attr)) | |
15085 | dwarf2_complex_location_expr_complaint (); | |
15086 | else if (attr_form_is_block (attr)) | |
15087 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
15088 | else | |
15089 | dwarf2_complex_location_expr_complaint (); | |
15090 | ||
15091 | return 1; | |
15092 | } | |
15093 | ||
15094 | return 0; | |
15095 | } | |
15096 | ||
c906108c SS |
15097 | /* Add an aggregate field to the field list. */ |
15098 | ||
15099 | static void | |
107d2387 | 15100 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15101 | struct dwarf2_cu *cu) |
6e70227d | 15102 | { |
518817b3 | 15103 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15104 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15105 | struct nextfield *new_field; |
15106 | struct attribute *attr; | |
15107 | struct field *fp; | |
15d034d0 | 15108 | const char *fieldname = ""; |
c906108c SS |
15109 | |
15110 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 15111 | new_field = XNEW (struct nextfield); |
b8c9b27d | 15112 | make_cleanup (xfree, new_field); |
c906108c | 15113 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
15114 | |
15115 | if (die->tag == DW_TAG_inheritance) | |
15116 | { | |
15117 | new_field->next = fip->baseclasses; | |
15118 | fip->baseclasses = new_field; | |
15119 | } | |
15120 | else | |
15121 | { | |
15122 | new_field->next = fip->fields; | |
15123 | fip->fields = new_field; | |
15124 | } | |
c906108c SS |
15125 | fip->nfields++; |
15126 | ||
e142c38c | 15127 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15128 | if (attr) |
15129 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15130 | else |
15131 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15132 | if (new_field->accessibility != DW_ACCESS_public) |
15133 | fip->non_public_fields = 1; | |
60d5a603 | 15134 | |
e142c38c | 15135 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15136 | if (attr) |
15137 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15138 | else |
15139 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15140 | |
15141 | fp = &new_field->field; | |
a9a9bd0f | 15142 | |
e142c38c | 15143 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15144 | { |
74ac6d43 TT |
15145 | LONGEST offset; |
15146 | ||
a9a9bd0f | 15147 | /* Data member other than a C++ static data member. */ |
6e70227d | 15148 | |
c906108c | 15149 | /* Get type of field. */ |
e7c27a73 | 15150 | fp->type = die_type (die, cu); |
c906108c | 15151 | |
d6a843b5 | 15152 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15153 | |
c906108c | 15154 | /* Get bit size of field (zero if none). */ |
e142c38c | 15155 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15156 | if (attr) |
15157 | { | |
15158 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15159 | } | |
15160 | else | |
15161 | { | |
15162 | FIELD_BITSIZE (*fp) = 0; | |
15163 | } | |
15164 | ||
15165 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15166 | if (handle_data_member_location (die, cu, &offset)) |
15167 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15168 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15169 | if (attr) |
15170 | { | |
5e2b427d | 15171 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15172 | { |
15173 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15174 | additional bit offset from the MSB of the containing |
15175 | anonymous object to the MSB of the field. We don't | |
15176 | have to do anything special since we don't need to | |
15177 | know the size of the anonymous object. */ | |
f41f5e61 | 15178 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15179 | } |
15180 | else | |
15181 | { | |
15182 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15183 | MSB of the anonymous object, subtract off the number of |
15184 | bits from the MSB of the field to the MSB of the | |
15185 | object, and then subtract off the number of bits of | |
15186 | the field itself. The result is the bit offset of | |
15187 | the LSB of the field. */ | |
c906108c SS |
15188 | int anonymous_size; |
15189 | int bit_offset = DW_UNSND (attr); | |
15190 | ||
e142c38c | 15191 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15192 | if (attr) |
15193 | { | |
15194 | /* The size of the anonymous object containing | |
15195 | the bit field is explicit, so use the | |
15196 | indicated size (in bytes). */ | |
15197 | anonymous_size = DW_UNSND (attr); | |
15198 | } | |
15199 | else | |
15200 | { | |
15201 | /* The size of the anonymous object containing | |
15202 | the bit field must be inferred from the type | |
15203 | attribute of the data member containing the | |
15204 | bit field. */ | |
15205 | anonymous_size = TYPE_LENGTH (fp->type); | |
15206 | } | |
f41f5e61 PA |
15207 | SET_FIELD_BITPOS (*fp, |
15208 | (FIELD_BITPOS (*fp) | |
15209 | + anonymous_size * bits_per_byte | |
15210 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15211 | } |
15212 | } | |
da5b30da AA |
15213 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15214 | if (attr != NULL) | |
15215 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15216 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15217 | |
15218 | /* Get name of field. */ | |
39cbfefa DJ |
15219 | fieldname = dwarf2_name (die, cu); |
15220 | if (fieldname == NULL) | |
15221 | fieldname = ""; | |
d8151005 DJ |
15222 | |
15223 | /* The name is already allocated along with this objfile, so we don't | |
15224 | need to duplicate it for the type. */ | |
15225 | fp->name = fieldname; | |
c906108c SS |
15226 | |
15227 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15228 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15229 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15230 | { |
d48cc9dd | 15231 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15232 | new_field->accessibility = DW_ACCESS_private; |
15233 | fip->non_public_fields = 1; | |
15234 | } | |
15235 | } | |
a9a9bd0f | 15236 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15237 | { |
a9a9bd0f DC |
15238 | /* C++ static member. */ |
15239 | ||
15240 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15241 | is a declaration, but all versions of G++ as of this writing | |
15242 | (so through at least 3.2.1) incorrectly generate | |
15243 | DW_TAG_variable tags. */ | |
6e70227d | 15244 | |
ff355380 | 15245 | const char *physname; |
c906108c | 15246 | |
a9a9bd0f | 15247 | /* Get name of field. */ |
39cbfefa DJ |
15248 | fieldname = dwarf2_name (die, cu); |
15249 | if (fieldname == NULL) | |
c906108c SS |
15250 | return; |
15251 | ||
254e6b9e | 15252 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15253 | if (attr |
15254 | /* Only create a symbol if this is an external value. | |
15255 | new_symbol checks this and puts the value in the global symbol | |
15256 | table, which we want. If it is not external, new_symbol | |
15257 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15258 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15259 | { |
15260 | /* A static const member, not much different than an enum as far as | |
15261 | we're concerned, except that we can support more types. */ | |
15262 | new_symbol (die, NULL, cu); | |
15263 | } | |
15264 | ||
2df3850c | 15265 | /* Get physical name. */ |
ff355380 | 15266 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15267 | |
d8151005 DJ |
15268 | /* The name is already allocated along with this objfile, so we don't |
15269 | need to duplicate it for the type. */ | |
15270 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15271 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15272 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15273 | } |
15274 | else if (die->tag == DW_TAG_inheritance) | |
15275 | { | |
74ac6d43 | 15276 | LONGEST offset; |
d4b96c9a | 15277 | |
74ac6d43 TT |
15278 | /* C++ base class field. */ |
15279 | if (handle_data_member_location (die, cu, &offset)) | |
15280 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15281 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15282 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
15283 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
15284 | fip->nbaseclasses++; | |
15285 | } | |
15286 | } | |
15287 | ||
883fd55a KS |
15288 | /* Can the type given by DIE define another type? */ |
15289 | ||
15290 | static bool | |
15291 | type_can_define_types (const struct die_info *die) | |
15292 | { | |
15293 | switch (die->tag) | |
15294 | { | |
15295 | case DW_TAG_typedef: | |
15296 | case DW_TAG_class_type: | |
15297 | case DW_TAG_structure_type: | |
15298 | case DW_TAG_union_type: | |
15299 | case DW_TAG_enumeration_type: | |
15300 | return true; | |
15301 | ||
15302 | default: | |
15303 | return false; | |
15304 | } | |
15305 | } | |
15306 | ||
15307 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15308 | |
15309 | static void | |
883fd55a KS |
15310 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15311 | struct dwarf2_cu *cu) | |
6e70227d | 15312 | { |
883fd55a KS |
15313 | struct decl_field_list *new_field; |
15314 | struct decl_field *fp; | |
98751a41 JK |
15315 | |
15316 | /* Allocate a new field list entry and link it in. */ | |
883fd55a | 15317 | new_field = XCNEW (struct decl_field_list); |
98751a41 JK |
15318 | make_cleanup (xfree, new_field); |
15319 | ||
883fd55a | 15320 | gdb_assert (type_can_define_types (die)); |
98751a41 JK |
15321 | |
15322 | fp = &new_field->field; | |
15323 | ||
883fd55a | 15324 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
98751a41 | 15325 | fp->name = dwarf2_name (die, cu); |
98751a41 JK |
15326 | fp->type = read_type_die (die, cu); |
15327 | ||
c191a687 KS |
15328 | /* Save accessibility. */ |
15329 | enum dwarf_access_attribute accessibility; | |
15330 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15331 | if (attr != NULL) | |
15332 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15333 | else | |
15334 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15335 | switch (accessibility) | |
15336 | { | |
15337 | case DW_ACCESS_public: | |
15338 | /* The assumed value if neither private nor protected. */ | |
15339 | break; | |
15340 | case DW_ACCESS_private: | |
15341 | fp->is_private = 1; | |
15342 | break; | |
15343 | case DW_ACCESS_protected: | |
15344 | fp->is_protected = 1; | |
15345 | break; | |
15346 | default: | |
37534686 KS |
15347 | complaint (&symfile_complaints, |
15348 | _("Unhandled DW_AT_accessibility value (%x)"), accessibility); | |
c191a687 KS |
15349 | } |
15350 | ||
883fd55a KS |
15351 | if (die->tag == DW_TAG_typedef) |
15352 | { | |
15353 | new_field->next = fip->typedef_field_list; | |
15354 | fip->typedef_field_list = new_field; | |
15355 | fip->typedef_field_list_count++; | |
15356 | } | |
15357 | else | |
15358 | { | |
15359 | new_field->next = fip->nested_types_list; | |
15360 | fip->nested_types_list = new_field; | |
15361 | fip->nested_types_list_count++; | |
15362 | } | |
98751a41 JK |
15363 | } |
15364 | ||
c906108c SS |
15365 | /* Create the vector of fields, and attach it to the type. */ |
15366 | ||
15367 | static void | |
fba45db2 | 15368 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15369 | struct dwarf2_cu *cu) |
c906108c SS |
15370 | { |
15371 | int nfields = fip->nfields; | |
15372 | ||
15373 | /* Record the field count, allocate space for the array of fields, | |
15374 | and create blank accessibility bitfields if necessary. */ | |
15375 | TYPE_NFIELDS (type) = nfields; | |
15376 | TYPE_FIELDS (type) = (struct field *) | |
15377 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
15378 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
15379 | ||
b4ba55a1 | 15380 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15381 | { |
15382 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15383 | ||
15384 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15385 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15386 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15387 | ||
15388 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15389 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15390 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15391 | ||
774b6a14 TT |
15392 | TYPE_FIELD_IGNORE_BITS (type) = |
15393 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15394 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15395 | } |
15396 | ||
15397 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15398 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 15399 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
15400 | { |
15401 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 15402 | unsigned char *pointer; |
c906108c SS |
15403 | |
15404 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15405 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15406 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
c906108c SS |
15407 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
15408 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
15409 | } | |
15410 | ||
3e43a32a MS |
15411 | /* Copy the saved-up fields into the field vector. Start from the head of |
15412 | the list, adding to the tail of the field array, so that they end up in | |
15413 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
15414 | while (nfields-- > 0) |
15415 | { | |
7d0ccb61 DJ |
15416 | struct nextfield *fieldp; |
15417 | ||
15418 | if (fip->fields) | |
15419 | { | |
15420 | fieldp = fip->fields; | |
15421 | fip->fields = fieldp->next; | |
15422 | } | |
15423 | else | |
15424 | { | |
15425 | fieldp = fip->baseclasses; | |
15426 | fip->baseclasses = fieldp->next; | |
15427 | } | |
15428 | ||
15429 | TYPE_FIELD (type, nfields) = fieldp->field; | |
15430 | switch (fieldp->accessibility) | |
c906108c | 15431 | { |
c5aa993b | 15432 | case DW_ACCESS_private: |
b4ba55a1 JB |
15433 | if (cu->language != language_ada) |
15434 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 15435 | break; |
c906108c | 15436 | |
c5aa993b | 15437 | case DW_ACCESS_protected: |
b4ba55a1 JB |
15438 | if (cu->language != language_ada) |
15439 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 15440 | break; |
c906108c | 15441 | |
c5aa993b JM |
15442 | case DW_ACCESS_public: |
15443 | break; | |
c906108c | 15444 | |
c5aa993b JM |
15445 | default: |
15446 | /* Unknown accessibility. Complain and treat it as public. */ | |
15447 | { | |
e2e0b3e5 | 15448 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 15449 | fieldp->accessibility); |
c5aa993b JM |
15450 | } |
15451 | break; | |
c906108c SS |
15452 | } |
15453 | if (nfields < fip->nbaseclasses) | |
15454 | { | |
7d0ccb61 | 15455 | switch (fieldp->virtuality) |
c906108c | 15456 | { |
c5aa993b JM |
15457 | case DW_VIRTUALITY_virtual: |
15458 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15459 | if (cu->language == language_ada) |
a73c6dcd | 15460 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
15461 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
15462 | break; | |
c906108c SS |
15463 | } |
15464 | } | |
c906108c SS |
15465 | } |
15466 | } | |
15467 | ||
7d27a96d TT |
15468 | /* Return true if this member function is a constructor, false |
15469 | otherwise. */ | |
15470 | ||
15471 | static int | |
15472 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15473 | { | |
15474 | const char *fieldname; | |
fe978cb0 | 15475 | const char *type_name; |
7d27a96d TT |
15476 | int len; |
15477 | ||
15478 | if (die->parent == NULL) | |
15479 | return 0; | |
15480 | ||
15481 | if (die->parent->tag != DW_TAG_structure_type | |
15482 | && die->parent->tag != DW_TAG_union_type | |
15483 | && die->parent->tag != DW_TAG_class_type) | |
15484 | return 0; | |
15485 | ||
15486 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15487 | type_name = dwarf2_name (die->parent, cu); |
15488 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15489 | return 0; |
15490 | ||
15491 | len = strlen (fieldname); | |
fe978cb0 PA |
15492 | return (strncmp (fieldname, type_name, len) == 0 |
15493 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15494 | } |
15495 | ||
c906108c SS |
15496 | /* Add a member function to the proper fieldlist. */ |
15497 | ||
15498 | static void | |
107d2387 | 15499 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15500 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15501 | { |
518817b3 | 15502 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15503 | struct attribute *attr; |
15504 | struct fnfieldlist *flp; | |
15505 | int i; | |
15506 | struct fn_field *fnp; | |
15d034d0 | 15507 | const char *fieldname; |
c906108c | 15508 | struct nextfnfield *new_fnfield; |
f792889a | 15509 | struct type *this_type; |
60d5a603 | 15510 | enum dwarf_access_attribute accessibility; |
c906108c | 15511 | |
b4ba55a1 | 15512 | if (cu->language == language_ada) |
a73c6dcd | 15513 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15514 | |
2df3850c | 15515 | /* Get name of member function. */ |
39cbfefa DJ |
15516 | fieldname = dwarf2_name (die, cu); |
15517 | if (fieldname == NULL) | |
2df3850c | 15518 | return; |
c906108c | 15519 | |
c906108c SS |
15520 | /* Look up member function name in fieldlist. */ |
15521 | for (i = 0; i < fip->nfnfields; i++) | |
15522 | { | |
27bfe10e | 15523 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
15524 | break; |
15525 | } | |
15526 | ||
15527 | /* Create new list element if necessary. */ | |
15528 | if (i < fip->nfnfields) | |
15529 | flp = &fip->fnfieldlists[i]; | |
15530 | else | |
15531 | { | |
15532 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
15533 | { | |
15534 | fip->fnfieldlists = (struct fnfieldlist *) | |
15535 | xrealloc (fip->fnfieldlists, | |
15536 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 15537 | * sizeof (struct fnfieldlist)); |
c906108c | 15538 | if (fip->nfnfields == 0) |
c13c43fd | 15539 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
15540 | } |
15541 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
15542 | flp->name = fieldname; | |
15543 | flp->length = 0; | |
15544 | flp->head = NULL; | |
3da10d80 | 15545 | i = fip->nfnfields++; |
c906108c SS |
15546 | } |
15547 | ||
15548 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 15549 | entry. */ |
8d749320 | 15550 | new_fnfield = XNEW (struct nextfnfield); |
b8c9b27d | 15551 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
15552 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
15553 | new_fnfield->next = flp->head; | |
15554 | flp->head = new_fnfield; | |
15555 | flp->length++; | |
15556 | ||
15557 | /* Fill in the member function field info. */ | |
15558 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
15559 | |
15560 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15561 | if (cu->language == language_cplus) |
3da10d80 KS |
15562 | { |
15563 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
15564 | die, cu); | |
15565 | } | |
15566 | else | |
15567 | { | |
1d06ead6 | 15568 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15569 | fnp->physname = physname ? physname : ""; |
15570 | } | |
15571 | ||
c906108c | 15572 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15573 | this_type = read_type_die (die, cu); |
15574 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15575 | { |
f792889a | 15576 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15577 | |
f792889a | 15578 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15579 | of the method itself (TYPE_CODE_METHOD). */ |
15580 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15581 | TYPE_TARGET_TYPE (this_type), |
15582 | TYPE_FIELDS (this_type), | |
15583 | TYPE_NFIELDS (this_type), | |
15584 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15585 | |
15586 | /* Handle static member functions. | |
c5aa993b | 15587 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15588 | member functions. G++ helps GDB by marking the first |
15589 | parameter for non-static member functions (which is the this | |
15590 | pointer) as artificial. We obtain this information from | |
15591 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15592 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15593 | fnp->voffset = VOFFSET_STATIC; |
15594 | } | |
15595 | else | |
e2e0b3e5 | 15596 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 15597 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15598 | |
15599 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15600 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15601 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15602 | |
3e43a32a MS |
15603 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15604 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15605 | |
15606 | /* Get accessibility. */ | |
e142c38c | 15607 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15608 | if (attr) |
aead7601 | 15609 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15610 | else |
15611 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15612 | switch (accessibility) | |
c906108c | 15613 | { |
60d5a603 JK |
15614 | case DW_ACCESS_private: |
15615 | fnp->is_private = 1; | |
15616 | break; | |
15617 | case DW_ACCESS_protected: | |
15618 | fnp->is_protected = 1; | |
15619 | break; | |
c906108c SS |
15620 | } |
15621 | ||
b02dede2 | 15622 | /* Check for artificial methods. */ |
e142c38c | 15623 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15624 | if (attr && DW_UNSND (attr) != 0) |
15625 | fnp->is_artificial = 1; | |
15626 | ||
7d27a96d TT |
15627 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15628 | ||
0d564a31 | 15629 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15630 | function. For older versions of GCC, this is an offset in the |
15631 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15632 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15633 | to the object address. */ |
15634 | ||
e142c38c | 15635 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15636 | if (attr) |
8e19ed76 | 15637 | { |
aec5aa8b | 15638 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15639 | { |
aec5aa8b TT |
15640 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15641 | { | |
15642 | /* Old-style GCC. */ | |
15643 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15644 | } | |
15645 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15646 | || (DW_BLOCK (attr)->size > 1 | |
15647 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15648 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15649 | { | |
aec5aa8b TT |
15650 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15651 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15652 | dwarf2_complex_location_expr_complaint (); | |
15653 | else | |
15654 | fnp->voffset /= cu->header.addr_size; | |
15655 | fnp->voffset += 2; | |
15656 | } | |
15657 | else | |
15658 | dwarf2_complex_location_expr_complaint (); | |
15659 | ||
15660 | if (!fnp->fcontext) | |
7e993ebf KS |
15661 | { |
15662 | /* If there is no `this' field and no DW_AT_containing_type, | |
15663 | we cannot actually find a base class context for the | |
15664 | vtable! */ | |
15665 | if (TYPE_NFIELDS (this_type) == 0 | |
15666 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15667 | { | |
15668 | complaint (&symfile_complaints, | |
15669 | _("cannot determine context for virtual member " | |
15670 | "function \"%s\" (offset %d)"), | |
9c541725 | 15671 | fieldname, to_underlying (die->sect_off)); |
7e993ebf KS |
15672 | } |
15673 | else | |
15674 | { | |
15675 | fnp->fcontext | |
15676 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15677 | } | |
15678 | } | |
aec5aa8b | 15679 | } |
3690dd37 | 15680 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15681 | { |
4d3c2250 | 15682 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15683 | } |
15684 | else | |
15685 | { | |
4d3c2250 KB |
15686 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15687 | fieldname); | |
8e19ed76 | 15688 | } |
0d564a31 | 15689 | } |
d48cc9dd DJ |
15690 | else |
15691 | { | |
15692 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15693 | if (attr && DW_UNSND (attr)) | |
15694 | { | |
15695 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
15696 | complaint (&symfile_complaints, | |
3e43a32a MS |
15697 | _("Member function \"%s\" (offset %d) is virtual " |
15698 | "but the vtable offset is not specified"), | |
9c541725 | 15699 | fieldname, to_underlying (die->sect_off)); |
9655fd1a | 15700 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15701 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15702 | } | |
15703 | } | |
c906108c SS |
15704 | } |
15705 | ||
15706 | /* Create the vector of member function fields, and attach it to the type. */ | |
15707 | ||
15708 | static void | |
fba45db2 | 15709 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15710 | struct dwarf2_cu *cu) |
c906108c SS |
15711 | { |
15712 | struct fnfieldlist *flp; | |
c906108c SS |
15713 | int i; |
15714 | ||
b4ba55a1 | 15715 | if (cu->language == language_ada) |
a73c6dcd | 15716 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15717 | |
c906108c SS |
15718 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15719 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
15720 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
15721 | ||
15722 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
15723 | { | |
15724 | struct nextfnfield *nfp = flp->head; | |
15725 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
15726 | int k; | |
15727 | ||
15728 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
15729 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
15730 | fn_flp->fn_fields = (struct fn_field *) | |
15731 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
15732 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 15733 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
15734 | } |
15735 | ||
15736 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
15737 | } |
15738 | ||
1168df01 JB |
15739 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15740 | language, zero otherwise. */ | |
15741 | static int | |
15742 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15743 | { | |
15744 | static const char vptr[] = "_vptr"; | |
15745 | ||
9c37b5ae TT |
15746 | /* Look for the C++ form of the vtable. */ |
15747 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15748 | return 1; |
15749 | ||
15750 | return 0; | |
15751 | } | |
15752 | ||
c0dd20ea | 15753 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15754 | functions, with the ABI-specified layout. If TYPE describes |
15755 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15756 | |
15757 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15758 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15759 | |
0b92b5bb TT |
15760 | static void |
15761 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15762 | { |
09e2d7c7 | 15763 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15764 | |
15765 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15766 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15767 | return; | |
c0dd20ea DJ |
15768 | |
15769 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15770 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15771 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15772 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15773 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15774 | return; | |
c0dd20ea DJ |
15775 | |
15776 | /* Find the type of the method. */ | |
0b92b5bb | 15777 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15778 | if (pfn_type == NULL |
15779 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15780 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15781 | return; |
c0dd20ea DJ |
15782 | |
15783 | /* Look for the "this" argument. */ | |
15784 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15785 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15786 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15787 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15788 | return; |
c0dd20ea | 15789 | |
09e2d7c7 | 15790 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15791 | new_type = alloc_type (objfile); |
09e2d7c7 | 15792 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15793 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15794 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15795 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15796 | } |
1168df01 | 15797 | |
685b1105 | 15798 | |
c906108c | 15799 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15800 | (definition) to create a type for the structure or union. Fill in |
15801 | the type's name and general properties; the members will not be | |
83655187 DE |
15802 | processed until process_structure_scope. A symbol table entry for |
15803 | the type will also not be done until process_structure_scope (assuming | |
15804 | the type has a name). | |
c906108c | 15805 | |
c767944b DJ |
15806 | NOTE: we need to call these functions regardless of whether or not the |
15807 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15808 | structure or union. This gets the type entered into our set of |
83655187 | 15809 | user defined types. */ |
c906108c | 15810 | |
f792889a | 15811 | static struct type * |
134d01f1 | 15812 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15813 | { |
518817b3 | 15814 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15815 | struct type *type; |
15816 | struct attribute *attr; | |
15d034d0 | 15817 | const char *name; |
c906108c | 15818 | |
348e048f DE |
15819 | /* If the definition of this type lives in .debug_types, read that type. |
15820 | Don't follow DW_AT_specification though, that will take us back up | |
15821 | the chain and we want to go down. */ | |
45e58e77 | 15822 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15823 | if (attr) |
15824 | { | |
ac9ec31b | 15825 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15826 | |
ac9ec31b | 15827 | /* The type's CU may not be the same as CU. |
02142a6c | 15828 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15829 | return set_die_type (die, type, cu); |
15830 | } | |
15831 | ||
c0dd20ea | 15832 | type = alloc_type (objfile); |
c906108c | 15833 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15834 | |
39cbfefa DJ |
15835 | name = dwarf2_name (die, cu); |
15836 | if (name != NULL) | |
c906108c | 15837 | { |
987504bb | 15838 | if (cu->language == language_cplus |
c44af4eb TT |
15839 | || cu->language == language_d |
15840 | || cu->language == language_rust) | |
63d06c5c | 15841 | { |
15d034d0 | 15842 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15843 | |
15844 | /* dwarf2_full_name might have already finished building the DIE's | |
15845 | type. If so, there is no need to continue. */ | |
15846 | if (get_die_type (die, cu) != NULL) | |
15847 | return get_die_type (die, cu); | |
15848 | ||
15849 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
15850 | if (die->tag == DW_TAG_structure_type |
15851 | || die->tag == DW_TAG_class_type) | |
15852 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
15853 | } |
15854 | else | |
15855 | { | |
d8151005 DJ |
15856 | /* The name is already allocated along with this objfile, so |
15857 | we don't need to duplicate it for the type. */ | |
7d455152 | 15858 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
15859 | if (die->tag == DW_TAG_class_type) |
15860 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 15861 | } |
c906108c SS |
15862 | } |
15863 | ||
15864 | if (die->tag == DW_TAG_structure_type) | |
15865 | { | |
15866 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15867 | } | |
15868 | else if (die->tag == DW_TAG_union_type) | |
15869 | { | |
15870 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15871 | } | |
15872 | else | |
15873 | { | |
4753d33b | 15874 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15875 | } |
15876 | ||
0cc2414c TT |
15877 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15878 | TYPE_DECLARED_CLASS (type) = 1; | |
15879 | ||
e142c38c | 15880 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15881 | if (attr) |
15882 | { | |
155bfbd3 JB |
15883 | if (attr_form_is_constant (attr)) |
15884 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15885 | else | |
15886 | { | |
15887 | /* For the moment, dynamic type sizes are not supported | |
15888 | by GDB's struct type. The actual size is determined | |
15889 | on-demand when resolving the type of a given object, | |
15890 | so set the type's length to zero for now. Otherwise, | |
15891 | we record an expression as the length, and that expression | |
15892 | could lead to a very large value, which could eventually | |
15893 | lead to us trying to allocate that much memory when creating | |
15894 | a value of that type. */ | |
15895 | TYPE_LENGTH (type) = 0; | |
15896 | } | |
c906108c SS |
15897 | } |
15898 | else | |
15899 | { | |
15900 | TYPE_LENGTH (type) = 0; | |
15901 | } | |
15902 | ||
5230b05a | 15903 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15904 | { |
5230b05a WT |
15905 | /* ICC<14 does not output the required DW_AT_declaration on |
15906 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15907 | TYPE_STUB (type) = 1; |
685b1105 JK |
15908 | } |
15909 | else | |
15910 | TYPE_STUB_SUPPORTED (type) = 1; | |
15911 | ||
dc718098 | 15912 | if (die_is_declaration (die, cu)) |
876cecd0 | 15913 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15914 | else if (attr == NULL && die->child == NULL |
15915 | && producer_is_realview (cu->producer)) | |
15916 | /* RealView does not output the required DW_AT_declaration | |
15917 | on incomplete types. */ | |
15918 | TYPE_STUB (type) = 1; | |
dc718098 | 15919 | |
c906108c SS |
15920 | /* We need to add the type field to the die immediately so we don't |
15921 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15922 | type within the structure itself. */ |
1c379e20 | 15923 | set_die_type (die, type, cu); |
c906108c | 15924 | |
7e314c57 JK |
15925 | /* set_die_type should be already done. */ |
15926 | set_descriptive_type (type, die, cu); | |
15927 | ||
c767944b DJ |
15928 | return type; |
15929 | } | |
15930 | ||
15931 | /* Finish creating a structure or union type, including filling in | |
15932 | its members and creating a symbol for it. */ | |
15933 | ||
15934 | static void | |
15935 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15936 | { | |
518817b3 | 15937 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15938 | struct die_info *child_die; |
c767944b DJ |
15939 | struct type *type; |
15940 | ||
15941 | type = get_die_type (die, cu); | |
15942 | if (type == NULL) | |
15943 | type = read_structure_type (die, cu); | |
15944 | ||
e142c38c | 15945 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15946 | { |
15947 | struct field_info fi; | |
2f4732b0 | 15948 | std::vector<struct symbol *> template_args; |
c767944b | 15949 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
15950 | |
15951 | memset (&fi, 0, sizeof (struct field_info)); | |
15952 | ||
639d11d3 | 15953 | child_die = die->child; |
c906108c SS |
15954 | |
15955 | while (child_die && child_die->tag) | |
15956 | { | |
a9a9bd0f DC |
15957 | if (child_die->tag == DW_TAG_member |
15958 | || child_die->tag == DW_TAG_variable) | |
c906108c | 15959 | { |
a9a9bd0f DC |
15960 | /* NOTE: carlton/2002-11-05: A C++ static data member |
15961 | should be a DW_TAG_member that is a declaration, but | |
15962 | all versions of G++ as of this writing (so through at | |
15963 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15964 | tags for them instead. */ | |
e7c27a73 | 15965 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 15966 | } |
8713b1b1 | 15967 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 15968 | { |
e98c9e7c TT |
15969 | /* Rust doesn't have member functions in the C++ sense. |
15970 | However, it does emit ordinary functions as children | |
15971 | of a struct DIE. */ | |
15972 | if (cu->language == language_rust) | |
15973 | read_func_scope (child_die, cu); | |
15974 | else | |
15975 | { | |
15976 | /* C++ member function. */ | |
15977 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
15978 | } | |
c906108c SS |
15979 | } |
15980 | else if (child_die->tag == DW_TAG_inheritance) | |
15981 | { | |
15982 | /* C++ base class field. */ | |
e7c27a73 | 15983 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 15984 | } |
883fd55a KS |
15985 | else if (type_can_define_types (child_die)) |
15986 | dwarf2_add_type_defn (&fi, child_die, cu); | |
34eaf542 TT |
15987 | else if (child_die->tag == DW_TAG_template_type_param |
15988 | || child_die->tag == DW_TAG_template_value_param) | |
15989 | { | |
15990 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15991 | ||
f1078f66 | 15992 | if (arg != NULL) |
2f4732b0 | 15993 | template_args.push_back (arg); |
34eaf542 TT |
15994 | } |
15995 | ||
c906108c SS |
15996 | child_die = sibling_die (child_die); |
15997 | } | |
15998 | ||
34eaf542 | 15999 | /* Attach template arguments to type. */ |
2f4732b0 | 16000 | if (!template_args.empty ()) |
34eaf542 TT |
16001 | { |
16002 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2f4732b0 | 16003 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16004 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16005 | = XOBNEWVEC (&objfile->objfile_obstack, |
16006 | struct symbol *, | |
16007 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16008 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16009 | template_args.data (), |
34eaf542 TT |
16010 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16011 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16012 | } |
16013 | ||
c906108c SS |
16014 | /* Attach fields and member functions to the type. */ |
16015 | if (fi.nfields) | |
e7c27a73 | 16016 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
16017 | if (fi.nfnfields) |
16018 | { | |
e7c27a73 | 16019 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16020 | |
c5aa993b | 16021 | /* Get the type which refers to the base class (possibly this |
c906108c | 16022 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16023 | class from the DW_AT_containing_type attribute. This use of |
16024 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16025 | |
e142c38c | 16026 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16027 | { |
e7c27a73 | 16028 | struct type *t = die_containing_type (die, cu); |
c906108c | 16029 | |
ae6ae975 | 16030 | set_type_vptr_basetype (type, t); |
c906108c SS |
16031 | if (type == t) |
16032 | { | |
c906108c SS |
16033 | int i; |
16034 | ||
16035 | /* Our own class provides vtbl ptr. */ | |
16036 | for (i = TYPE_NFIELDS (t) - 1; | |
16037 | i >= TYPE_N_BASECLASSES (t); | |
16038 | --i) | |
16039 | { | |
0d5cff50 | 16040 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16041 | |
1168df01 | 16042 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16043 | { |
ae6ae975 | 16044 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16045 | break; |
16046 | } | |
16047 | } | |
16048 | ||
16049 | /* Complain if virtual function table field not found. */ | |
16050 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 16051 | complaint (&symfile_complaints, |
3e43a32a MS |
16052 | _("virtual function table pointer " |
16053 | "not found when defining class '%s'"), | |
4d3c2250 KB |
16054 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
16055 | ""); | |
c906108c SS |
16056 | } |
16057 | else | |
16058 | { | |
ae6ae975 | 16059 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16060 | } |
16061 | } | |
f6235d4c | 16062 | else if (cu->producer |
61012eef | 16063 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16064 | { |
16065 | /* The IBM XLC compiler does not provide direct indication | |
16066 | of the containing type, but the vtable pointer is | |
16067 | always named __vfp. */ | |
16068 | ||
16069 | int i; | |
16070 | ||
16071 | for (i = TYPE_NFIELDS (type) - 1; | |
16072 | i >= TYPE_N_BASECLASSES (type); | |
16073 | --i) | |
16074 | { | |
16075 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16076 | { | |
ae6ae975 DE |
16077 | set_type_vptr_fieldno (type, i); |
16078 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16079 | break; |
16080 | } | |
16081 | } | |
16082 | } | |
c906108c | 16083 | } |
98751a41 JK |
16084 | |
16085 | /* Copy fi.typedef_field_list linked list elements content into the | |
16086 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
16087 | if (fi.typedef_field_list) | |
16088 | { | |
16089 | int i = fi.typedef_field_list_count; | |
16090 | ||
a0d7a4ff | 16091 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16092 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16093 | = ((struct decl_field *) |
224c3ddb | 16094 | TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i)); |
98751a41 JK |
16095 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; |
16096 | ||
16097 | /* Reverse the list order to keep the debug info elements order. */ | |
16098 | while (--i >= 0) | |
16099 | { | |
883fd55a | 16100 | struct decl_field *dest, *src; |
6e70227d | 16101 | |
98751a41 JK |
16102 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
16103 | src = &fi.typedef_field_list->field; | |
16104 | fi.typedef_field_list = fi.typedef_field_list->next; | |
16105 | *dest = *src; | |
16106 | } | |
16107 | } | |
c767944b | 16108 | |
883fd55a KS |
16109 | /* Copy fi.nested_types_list linked list elements content into the |
16110 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
16111 | if (fi.nested_types_list != NULL && cu->language != language_ada) | |
16112 | { | |
16113 | int i = fi.nested_types_list_count; | |
16114 | ||
16115 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16116 | TYPE_NESTED_TYPES_ARRAY (type) | |
16117 | = ((struct decl_field *) | |
16118 | TYPE_ALLOC (type, sizeof (struct decl_field) * i)); | |
16119 | TYPE_NESTED_TYPES_COUNT (type) = i; | |
16120 | ||
16121 | /* Reverse the list order to keep the debug info elements order. */ | |
16122 | while (--i >= 0) | |
16123 | { | |
16124 | struct decl_field *dest, *src; | |
16125 | ||
16126 | dest = &TYPE_NESTED_TYPES_FIELD (type, i); | |
16127 | src = &fi.nested_types_list->field; | |
16128 | fi.nested_types_list = fi.nested_types_list->next; | |
16129 | *dest = *src; | |
16130 | } | |
16131 | } | |
16132 | ||
c767944b | 16133 | do_cleanups (back_to); |
c906108c | 16134 | } |
63d06c5c | 16135 | |
bb5ed363 | 16136 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 16137 | |
90aeadfc DC |
16138 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16139 | snapshots) has been known to create a die giving a declaration | |
16140 | for a class that has, as a child, a die giving a definition for a | |
16141 | nested class. So we have to process our children even if the | |
16142 | current die is a declaration. Normally, of course, a declaration | |
16143 | won't have any children at all. */ | |
134d01f1 | 16144 | |
ca040673 DE |
16145 | child_die = die->child; |
16146 | ||
90aeadfc DC |
16147 | while (child_die != NULL && child_die->tag) |
16148 | { | |
16149 | if (child_die->tag == DW_TAG_member | |
16150 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16151 | || child_die->tag == DW_TAG_inheritance |
16152 | || child_die->tag == DW_TAG_template_value_param | |
16153 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16154 | { |
90aeadfc | 16155 | /* Do nothing. */ |
134d01f1 | 16156 | } |
90aeadfc DC |
16157 | else |
16158 | process_die (child_die, cu); | |
134d01f1 | 16159 | |
90aeadfc | 16160 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16161 | } |
16162 | ||
fa4028e9 JB |
16163 | /* Do not consider external references. According to the DWARF standard, |
16164 | these DIEs are identified by the fact that they have no byte_size | |
16165 | attribute, and a declaration attribute. */ | |
16166 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16167 | || !die_is_declaration (die, cu)) | |
c767944b | 16168 | new_symbol (die, type, cu); |
134d01f1 DJ |
16169 | } |
16170 | ||
55426c9d JB |
16171 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16172 | update TYPE using some information only available in DIE's children. */ | |
16173 | ||
16174 | static void | |
16175 | update_enumeration_type_from_children (struct die_info *die, | |
16176 | struct type *type, | |
16177 | struct dwarf2_cu *cu) | |
16178 | { | |
60f7655a | 16179 | struct die_info *child_die; |
55426c9d JB |
16180 | int unsigned_enum = 1; |
16181 | int flag_enum = 1; | |
16182 | ULONGEST mask = 0; | |
55426c9d | 16183 | |
8268c778 | 16184 | auto_obstack obstack; |
55426c9d | 16185 | |
60f7655a DE |
16186 | for (child_die = die->child; |
16187 | child_die != NULL && child_die->tag; | |
16188 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16189 | { |
16190 | struct attribute *attr; | |
16191 | LONGEST value; | |
16192 | const gdb_byte *bytes; | |
16193 | struct dwarf2_locexpr_baton *baton; | |
16194 | const char *name; | |
60f7655a | 16195 | |
55426c9d JB |
16196 | if (child_die->tag != DW_TAG_enumerator) |
16197 | continue; | |
16198 | ||
16199 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16200 | if (attr == NULL) | |
16201 | continue; | |
16202 | ||
16203 | name = dwarf2_name (child_die, cu); | |
16204 | if (name == NULL) | |
16205 | name = "<anonymous enumerator>"; | |
16206 | ||
16207 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16208 | &value, &bytes, &baton); | |
16209 | if (value < 0) | |
16210 | { | |
16211 | unsigned_enum = 0; | |
16212 | flag_enum = 0; | |
16213 | } | |
16214 | else if ((mask & value) != 0) | |
16215 | flag_enum = 0; | |
16216 | else | |
16217 | mask |= value; | |
16218 | ||
16219 | /* If we already know that the enum type is neither unsigned, nor | |
16220 | a flag type, no need to look at the rest of the enumerates. */ | |
16221 | if (!unsigned_enum && !flag_enum) | |
16222 | break; | |
55426c9d JB |
16223 | } |
16224 | ||
16225 | if (unsigned_enum) | |
16226 | TYPE_UNSIGNED (type) = 1; | |
16227 | if (flag_enum) | |
16228 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16229 | } |
16230 | ||
134d01f1 DJ |
16231 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16232 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16233 | |
f792889a | 16234 | static struct type * |
134d01f1 | 16235 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16236 | { |
518817b3 | 16237 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16238 | struct type *type; |
c906108c | 16239 | struct attribute *attr; |
0114d602 | 16240 | const char *name; |
134d01f1 | 16241 | |
348e048f DE |
16242 | /* If the definition of this type lives in .debug_types, read that type. |
16243 | Don't follow DW_AT_specification though, that will take us back up | |
16244 | the chain and we want to go down. */ | |
45e58e77 | 16245 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16246 | if (attr) |
16247 | { | |
ac9ec31b | 16248 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16249 | |
ac9ec31b | 16250 | /* The type's CU may not be the same as CU. |
02142a6c | 16251 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16252 | return set_die_type (die, type, cu); |
16253 | } | |
16254 | ||
c906108c SS |
16255 | type = alloc_type (objfile); |
16256 | ||
16257 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16258 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16259 | if (name != NULL) |
7d455152 | 16260 | TYPE_TAG_NAME (type) = name; |
c906108c | 16261 | |
0626fc76 TT |
16262 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16263 | if (attr != NULL) | |
16264 | { | |
16265 | struct type *underlying_type = die_type (die, cu); | |
16266 | ||
16267 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16268 | } | |
16269 | ||
e142c38c | 16270 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16271 | if (attr) |
16272 | { | |
16273 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16274 | } | |
16275 | else | |
16276 | { | |
16277 | TYPE_LENGTH (type) = 0; | |
16278 | } | |
16279 | ||
137033e9 JB |
16280 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16281 | declared as private in the package spec, and then defined only | |
16282 | inside the package body. Such types are known as Taft Amendment | |
16283 | Types. When another package uses such a type, an incomplete DIE | |
16284 | may be generated by the compiler. */ | |
02eb380e | 16285 | if (die_is_declaration (die, cu)) |
876cecd0 | 16286 | TYPE_STUB (type) = 1; |
02eb380e | 16287 | |
0626fc76 TT |
16288 | /* Finish the creation of this type by using the enum's children. |
16289 | We must call this even when the underlying type has been provided | |
16290 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16291 | update_enumeration_type_from_children (die, type, cu); |
16292 | ||
0626fc76 TT |
16293 | /* If this type has an underlying type that is not a stub, then we |
16294 | may use its attributes. We always use the "unsigned" attribute | |
16295 | in this situation, because ordinarily we guess whether the type | |
16296 | is unsigned -- but the guess can be wrong and the underlying type | |
16297 | can tell us the reality. However, we defer to a local size | |
16298 | attribute if one exists, because this lets the compiler override | |
16299 | the underlying type if needed. */ | |
16300 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16301 | { | |
16302 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16303 | if (TYPE_LENGTH (type) == 0) | |
16304 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
16305 | } | |
16306 | ||
3d567982 TT |
16307 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16308 | ||
f792889a | 16309 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16310 | } |
16311 | ||
16312 | /* Given a pointer to a die which begins an enumeration, process all | |
16313 | the dies that define the members of the enumeration, and create the | |
16314 | symbol for the enumeration type. | |
16315 | ||
16316 | NOTE: We reverse the order of the element list. */ | |
16317 | ||
16318 | static void | |
16319 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16320 | { | |
f792889a | 16321 | struct type *this_type; |
134d01f1 | 16322 | |
f792889a DJ |
16323 | this_type = get_die_type (die, cu); |
16324 | if (this_type == NULL) | |
16325 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16326 | |
639d11d3 | 16327 | if (die->child != NULL) |
c906108c | 16328 | { |
9dc481d3 DE |
16329 | struct die_info *child_die; |
16330 | struct symbol *sym; | |
16331 | struct field *fields = NULL; | |
16332 | int num_fields = 0; | |
15d034d0 | 16333 | const char *name; |
9dc481d3 | 16334 | |
639d11d3 | 16335 | child_die = die->child; |
c906108c SS |
16336 | while (child_die && child_die->tag) |
16337 | { | |
16338 | if (child_die->tag != DW_TAG_enumerator) | |
16339 | { | |
e7c27a73 | 16340 | process_die (child_die, cu); |
c906108c SS |
16341 | } |
16342 | else | |
16343 | { | |
39cbfefa DJ |
16344 | name = dwarf2_name (child_die, cu); |
16345 | if (name) | |
c906108c | 16346 | { |
f792889a | 16347 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16348 | |
16349 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16350 | { | |
16351 | fields = (struct field *) | |
16352 | xrealloc (fields, | |
16353 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16354 | * sizeof (struct field)); |
c906108c SS |
16355 | } |
16356 | ||
3567439c | 16357 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16358 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16359 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16360 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16361 | ||
16362 | num_fields++; | |
16363 | } | |
16364 | } | |
16365 | ||
16366 | child_die = sibling_die (child_die); | |
16367 | } | |
16368 | ||
16369 | if (num_fields) | |
16370 | { | |
f792889a DJ |
16371 | TYPE_NFIELDS (this_type) = num_fields; |
16372 | TYPE_FIELDS (this_type) = (struct field *) | |
16373 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16374 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16375 | sizeof (struct field) * num_fields); |
b8c9b27d | 16376 | xfree (fields); |
c906108c | 16377 | } |
c906108c | 16378 | } |
134d01f1 | 16379 | |
6c83ed52 TT |
16380 | /* If we are reading an enum from a .debug_types unit, and the enum |
16381 | is a declaration, and the enum is not the signatured type in the | |
16382 | unit, then we do not want to add a symbol for it. Adding a | |
16383 | symbol would in some cases obscure the true definition of the | |
16384 | enum, giving users an incomplete type when the definition is | |
16385 | actually available. Note that we do not want to do this for all | |
16386 | enums which are just declarations, because C++0x allows forward | |
16387 | enum declarations. */ | |
3019eac3 | 16388 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16389 | && die_is_declaration (die, cu)) |
16390 | { | |
52dc124a | 16391 | struct signatured_type *sig_type; |
6c83ed52 | 16392 | |
c0f78cd4 | 16393 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16394 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16395 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16396 | return; |
16397 | } | |
16398 | ||
f792889a | 16399 | new_symbol (die, this_type, cu); |
c906108c SS |
16400 | } |
16401 | ||
16402 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16403 | the DIE's type field. For now, this only handles one dimensional | |
16404 | arrays. */ | |
16405 | ||
f792889a | 16406 | static struct type * |
e7c27a73 | 16407 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16408 | { |
518817b3 | 16409 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16410 | struct die_info *child_die; |
7e314c57 | 16411 | struct type *type; |
c906108c | 16412 | struct type *element_type, *range_type, *index_type; |
c906108c | 16413 | struct attribute *attr; |
15d034d0 | 16414 | const char *name; |
a405673c | 16415 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16416 | unsigned int bit_stride = 0; |
c906108c | 16417 | |
e7c27a73 | 16418 | element_type = die_type (die, cu); |
c906108c | 16419 | |
7e314c57 JK |
16420 | /* The die_type call above may have already set the type for this DIE. */ |
16421 | type = get_die_type (die, cu); | |
16422 | if (type) | |
16423 | return type; | |
16424 | ||
dc53a7ad JB |
16425 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16426 | if (attr != NULL) | |
a405673c JB |
16427 | { |
16428 | int stride_ok; | |
16429 | ||
16430 | byte_stride_prop | |
16431 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16432 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16433 | if (!stride_ok) | |
16434 | { | |
16435 | complaint (&symfile_complaints, | |
16436 | _("unable to read array DW_AT_byte_stride " | |
16437 | " - DIE at 0x%x [in module %s]"), | |
16438 | to_underlying (die->sect_off), | |
518817b3 | 16439 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16440 | /* Ignore this attribute. We will likely not be able to print |
16441 | arrays of this type correctly, but there is little we can do | |
16442 | to help if we cannot read the attribute's value. */ | |
16443 | byte_stride_prop = NULL; | |
16444 | } | |
16445 | } | |
dc53a7ad JB |
16446 | |
16447 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16448 | if (attr != NULL) | |
16449 | bit_stride = DW_UNSND (attr); | |
16450 | ||
c906108c SS |
16451 | /* Irix 6.2 native cc creates array types without children for |
16452 | arrays with unspecified length. */ | |
639d11d3 | 16453 | if (die->child == NULL) |
c906108c | 16454 | { |
46bf5051 | 16455 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16456 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16457 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16458 | byte_stride_prop, bit_stride); |
f792889a | 16459 | return set_die_type (die, type, cu); |
c906108c SS |
16460 | } |
16461 | ||
791afaa2 | 16462 | std::vector<struct type *> range_types; |
639d11d3 | 16463 | child_die = die->child; |
c906108c SS |
16464 | while (child_die && child_die->tag) |
16465 | { | |
16466 | if (child_die->tag == DW_TAG_subrange_type) | |
16467 | { | |
f792889a | 16468 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16469 | |
f792889a | 16470 | if (child_type != NULL) |
a02abb62 | 16471 | { |
0963b4bd MS |
16472 | /* The range type was succesfully read. Save it for the |
16473 | array type creation. */ | |
791afaa2 | 16474 | range_types.push_back (child_type); |
a02abb62 | 16475 | } |
c906108c SS |
16476 | } |
16477 | child_die = sibling_die (child_die); | |
16478 | } | |
16479 | ||
16480 | /* Dwarf2 dimensions are output from left to right, create the | |
16481 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16482 | |
c906108c | 16483 | type = element_type; |
7ca2d3a3 DL |
16484 | |
16485 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16486 | { | |
16487 | int i = 0; | |
9a619af0 | 16488 | |
791afaa2 | 16489 | while (i < range_types.size ()) |
dc53a7ad | 16490 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16491 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16492 | } |
16493 | else | |
16494 | { | |
791afaa2 | 16495 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16496 | while (ndim-- > 0) |
dc53a7ad | 16497 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16498 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16499 | } |
c906108c | 16500 | |
f5f8a009 EZ |
16501 | /* Understand Dwarf2 support for vector types (like they occur on |
16502 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16503 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16504 | custom vendor extension. The main difference between a regular | |
16505 | array and the vector variant is that vectors are passed by value | |
16506 | to functions. */ | |
e142c38c | 16507 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16508 | if (attr) |
ea37ba09 | 16509 | make_vector_type (type); |
f5f8a009 | 16510 | |
dbc98a8b KW |
16511 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16512 | implementation may choose to implement triple vectors using this | |
16513 | attribute. */ | |
16514 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16515 | if (attr) | |
16516 | { | |
16517 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16518 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16519 | else | |
3e43a32a MS |
16520 | complaint (&symfile_complaints, |
16521 | _("DW_AT_byte_size for array type smaller " | |
16522 | "than the total size of elements")); | |
dbc98a8b KW |
16523 | } |
16524 | ||
39cbfefa DJ |
16525 | name = dwarf2_name (die, cu); |
16526 | if (name) | |
16527 | TYPE_NAME (type) = name; | |
6e70227d | 16528 | |
0963b4bd | 16529 | /* Install the type in the die. */ |
7e314c57 JK |
16530 | set_die_type (die, type, cu); |
16531 | ||
16532 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16533 | set_descriptive_type (type, die, cu); |
16534 | ||
7e314c57 | 16535 | return type; |
c906108c SS |
16536 | } |
16537 | ||
7ca2d3a3 | 16538 | static enum dwarf_array_dim_ordering |
6e70227d | 16539 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16540 | { |
16541 | struct attribute *attr; | |
16542 | ||
16543 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16544 | ||
aead7601 SM |
16545 | if (attr) |
16546 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16547 | |
0963b4bd MS |
16548 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16549 | opposite order to the dwarf2 specification, but data is still | |
16550 | laid out as per normal fortran. | |
7ca2d3a3 | 16551 | |
0963b4bd MS |
16552 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16553 | version checking. */ | |
7ca2d3a3 | 16554 | |
905e0470 PM |
16555 | if (cu->language == language_fortran |
16556 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16557 | { |
16558 | return DW_ORD_row_major; | |
16559 | } | |
16560 | ||
6e70227d | 16561 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16562 | { |
16563 | case array_column_major: | |
16564 | return DW_ORD_col_major; | |
16565 | case array_row_major: | |
16566 | default: | |
16567 | return DW_ORD_row_major; | |
16568 | }; | |
16569 | } | |
16570 | ||
72019c9c | 16571 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16572 | the DIE's type field. */ |
72019c9c | 16573 | |
f792889a | 16574 | static struct type * |
72019c9c GM |
16575 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16576 | { | |
7e314c57 JK |
16577 | struct type *domain_type, *set_type; |
16578 | struct attribute *attr; | |
f792889a | 16579 | |
7e314c57 JK |
16580 | domain_type = die_type (die, cu); |
16581 | ||
16582 | /* The die_type call above may have already set the type for this DIE. */ | |
16583 | set_type = get_die_type (die, cu); | |
16584 | if (set_type) | |
16585 | return set_type; | |
16586 | ||
16587 | set_type = create_set_type (NULL, domain_type); | |
16588 | ||
16589 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16590 | if (attr) |
16591 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16592 | |
f792889a | 16593 | return set_die_type (die, set_type, cu); |
72019c9c | 16594 | } |
7ca2d3a3 | 16595 | |
0971de02 TT |
16596 | /* A helper for read_common_block that creates a locexpr baton. |
16597 | SYM is the symbol which we are marking as computed. | |
16598 | COMMON_DIE is the DIE for the common block. | |
16599 | COMMON_LOC is the location expression attribute for the common | |
16600 | block itself. | |
16601 | MEMBER_LOC is the location expression attribute for the particular | |
16602 | member of the common block that we are processing. | |
16603 | CU is the CU from which the above come. */ | |
16604 | ||
16605 | static void | |
16606 | mark_common_block_symbol_computed (struct symbol *sym, | |
16607 | struct die_info *common_die, | |
16608 | struct attribute *common_loc, | |
16609 | struct attribute *member_loc, | |
16610 | struct dwarf2_cu *cu) | |
16611 | { | |
518817b3 SM |
16612 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16613 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16614 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16615 | struct dwarf2_locexpr_baton *baton; | |
16616 | gdb_byte *ptr; | |
16617 | unsigned int cu_off; | |
16618 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16619 | LONGEST offset = 0; | |
16620 | ||
16621 | gdb_assert (common_loc && member_loc); | |
16622 | gdb_assert (attr_form_is_block (common_loc)); | |
16623 | gdb_assert (attr_form_is_block (member_loc) | |
16624 | || attr_form_is_constant (member_loc)); | |
16625 | ||
8d749320 | 16626 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16627 | baton->per_cu = cu->per_cu; |
16628 | gdb_assert (baton->per_cu); | |
16629 | ||
16630 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16631 | ||
16632 | if (attr_form_is_constant (member_loc)) | |
16633 | { | |
16634 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16635 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16636 | } | |
16637 | else | |
16638 | baton->size += DW_BLOCK (member_loc)->size; | |
16639 | ||
224c3ddb | 16640 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16641 | baton->data = ptr; |
16642 | ||
16643 | *ptr++ = DW_OP_call4; | |
9c541725 | 16644 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16645 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16646 | ptr += 4; | |
16647 | ||
16648 | if (attr_form_is_constant (member_loc)) | |
16649 | { | |
16650 | *ptr++ = DW_OP_addr; | |
16651 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16652 | ptr += cu->header.addr_size; | |
16653 | } | |
16654 | else | |
16655 | { | |
16656 | /* We have to copy the data here, because DW_OP_call4 will only | |
16657 | use a DW_AT_location attribute. */ | |
16658 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16659 | ptr += DW_BLOCK (member_loc)->size; | |
16660 | } | |
16661 | ||
16662 | *ptr++ = DW_OP_plus; | |
16663 | gdb_assert (ptr - baton->data == baton->size); | |
16664 | ||
0971de02 | 16665 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16666 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16667 | } |
16668 | ||
4357ac6c TT |
16669 | /* Create appropriate locally-scoped variables for all the |
16670 | DW_TAG_common_block entries. Also create a struct common_block | |
16671 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16672 | is used to sepate the common blocks name namespace from regular | |
16673 | variable names. */ | |
c906108c SS |
16674 | |
16675 | static void | |
e7c27a73 | 16676 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16677 | { |
0971de02 TT |
16678 | struct attribute *attr; |
16679 | ||
16680 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16681 | if (attr) | |
16682 | { | |
16683 | /* Support the .debug_loc offsets. */ | |
16684 | if (attr_form_is_block (attr)) | |
16685 | { | |
16686 | /* Ok. */ | |
16687 | } | |
16688 | else if (attr_form_is_section_offset (attr)) | |
16689 | { | |
16690 | dwarf2_complex_location_expr_complaint (); | |
16691 | attr = NULL; | |
16692 | } | |
16693 | else | |
16694 | { | |
16695 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16696 | "common block member"); | |
16697 | attr = NULL; | |
16698 | } | |
16699 | } | |
16700 | ||
639d11d3 | 16701 | if (die->child != NULL) |
c906108c | 16702 | { |
518817b3 | 16703 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16704 | struct die_info *child_die; |
16705 | size_t n_entries = 0, size; | |
16706 | struct common_block *common_block; | |
16707 | struct symbol *sym; | |
74ac6d43 | 16708 | |
4357ac6c TT |
16709 | for (child_die = die->child; |
16710 | child_die && child_die->tag; | |
16711 | child_die = sibling_die (child_die)) | |
16712 | ++n_entries; | |
16713 | ||
16714 | size = (sizeof (struct common_block) | |
16715 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16716 | common_block |
16717 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16718 | size); | |
4357ac6c TT |
16719 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16720 | common_block->n_entries = 0; | |
16721 | ||
16722 | for (child_die = die->child; | |
16723 | child_die && child_die->tag; | |
16724 | child_die = sibling_die (child_die)) | |
16725 | { | |
16726 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16727 | symbol scope. */ | |
e7c27a73 | 16728 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16729 | if (sym != NULL) |
16730 | { | |
16731 | struct attribute *member_loc; | |
16732 | ||
16733 | common_block->contents[common_block->n_entries++] = sym; | |
16734 | ||
16735 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16736 | cu); | |
16737 | if (member_loc) | |
16738 | { | |
16739 | /* GDB has handled this for a long time, but it is | |
16740 | not specified by DWARF. It seems to have been | |
16741 | emitted by gfortran at least as recently as: | |
16742 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
16743 | complaint (&symfile_complaints, | |
16744 | _("Variable in common block has " | |
16745 | "DW_AT_data_member_location " | |
16746 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 16747 | to_underlying (child_die->sect_off), |
518817b3 | 16748 | objfile_name (objfile)); |
0971de02 TT |
16749 | |
16750 | if (attr_form_is_section_offset (member_loc)) | |
16751 | dwarf2_complex_location_expr_complaint (); | |
16752 | else if (attr_form_is_constant (member_loc) | |
16753 | || attr_form_is_block (member_loc)) | |
16754 | { | |
16755 | if (attr) | |
16756 | mark_common_block_symbol_computed (sym, die, attr, | |
16757 | member_loc, cu); | |
16758 | } | |
16759 | else | |
16760 | dwarf2_complex_location_expr_complaint (); | |
16761 | } | |
16762 | } | |
c906108c | 16763 | } |
4357ac6c TT |
16764 | |
16765 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16766 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16767 | } |
16768 | } | |
16769 | ||
0114d602 | 16770 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16771 | |
0114d602 DJ |
16772 | static struct type * |
16773 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16774 | { |
518817b3 | 16775 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16776 | const char *previous_prefix, *name; |
9219021c | 16777 | int is_anonymous; |
0114d602 DJ |
16778 | struct type *type; |
16779 | ||
16780 | /* For extensions, reuse the type of the original namespace. */ | |
16781 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16782 | { | |
16783 | struct die_info *ext_die; | |
16784 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16785 | |
0114d602 DJ |
16786 | ext_die = dwarf2_extension (die, &ext_cu); |
16787 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16788 | |
16789 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16790 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16791 | return set_die_type (die, type, cu); |
16792 | } | |
9219021c | 16793 | |
e142c38c | 16794 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16795 | |
16796 | /* Now build the name of the current namespace. */ | |
16797 | ||
0114d602 DJ |
16798 | previous_prefix = determine_prefix (die, cu); |
16799 | if (previous_prefix[0] != '\0') | |
16800 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16801 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16802 | |
16803 | /* Create the type. */ | |
19f392bc | 16804 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
16805 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
16806 | ||
60531b24 | 16807 | return set_die_type (die, type, cu); |
0114d602 DJ |
16808 | } |
16809 | ||
22cee43f | 16810 | /* Read a namespace scope. */ |
0114d602 DJ |
16811 | |
16812 | static void | |
16813 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16814 | { | |
518817b3 | 16815 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16816 | int is_anonymous; |
9219021c | 16817 | |
5c4e30ca DC |
16818 | /* Add a symbol associated to this if we haven't seen the namespace |
16819 | before. Also, add a using directive if it's an anonymous | |
16820 | namespace. */ | |
9219021c | 16821 | |
f2f0e013 | 16822 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16823 | { |
16824 | struct type *type; | |
16825 | ||
0114d602 | 16826 | type = read_type_die (die, cu); |
e7c27a73 | 16827 | new_symbol (die, type, cu); |
5c4e30ca | 16828 | |
e8e80198 | 16829 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16830 | if (is_anonymous) |
0114d602 DJ |
16831 | { |
16832 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16833 | |
eb1e02fd | 16834 | std::vector<const char *> excludes; |
22cee43f PMR |
16835 | add_using_directive (using_directives (cu->language), |
16836 | previous_prefix, TYPE_NAME (type), NULL, | |
eb1e02fd | 16837 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16838 | } |
5c4e30ca | 16839 | } |
9219021c | 16840 | |
639d11d3 | 16841 | if (die->child != NULL) |
d9fa45fe | 16842 | { |
639d11d3 | 16843 | struct die_info *child_die = die->child; |
6e70227d | 16844 | |
d9fa45fe DC |
16845 | while (child_die && child_die->tag) |
16846 | { | |
e7c27a73 | 16847 | process_die (child_die, cu); |
d9fa45fe DC |
16848 | child_die = sibling_die (child_die); |
16849 | } | |
16850 | } | |
38d518c9 EZ |
16851 | } |
16852 | ||
f55ee35c JK |
16853 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16854 | imported module. Still we need that type as local Fortran "use ... only" | |
16855 | declaration imports depend on the created type in determine_prefix. */ | |
16856 | ||
16857 | static struct type * | |
16858 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16859 | { | |
518817b3 | 16860 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16861 | const char *module_name; |
f55ee35c JK |
16862 | struct type *type; |
16863 | ||
16864 | module_name = dwarf2_name (die, cu); | |
16865 | if (!module_name) | |
3e43a32a MS |
16866 | complaint (&symfile_complaints, |
16867 | _("DW_TAG_module has no name, offset 0x%x"), | |
9c541725 | 16868 | to_underlying (die->sect_off)); |
19f392bc | 16869 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
16870 | |
16871 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
16872 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
16873 | ||
16874 | return set_die_type (die, type, cu); | |
16875 | } | |
16876 | ||
5d7cb8df JK |
16877 | /* Read a Fortran module. */ |
16878 | ||
16879 | static void | |
16880 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16881 | { | |
16882 | struct die_info *child_die = die->child; | |
530e8392 KB |
16883 | struct type *type; |
16884 | ||
16885 | type = read_type_die (die, cu); | |
16886 | new_symbol (die, type, cu); | |
5d7cb8df | 16887 | |
5d7cb8df JK |
16888 | while (child_die && child_die->tag) |
16889 | { | |
16890 | process_die (child_die, cu); | |
16891 | child_die = sibling_die (child_die); | |
16892 | } | |
16893 | } | |
16894 | ||
38d518c9 EZ |
16895 | /* Return the name of the namespace represented by DIE. Set |
16896 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16897 | namespace. */ | |
16898 | ||
16899 | static const char * | |
e142c38c | 16900 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16901 | { |
16902 | struct die_info *current_die; | |
16903 | const char *name = NULL; | |
16904 | ||
16905 | /* Loop through the extensions until we find a name. */ | |
16906 | ||
16907 | for (current_die = die; | |
16908 | current_die != NULL; | |
f2f0e013 | 16909 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16910 | { |
96553a0c DE |
16911 | /* We don't use dwarf2_name here so that we can detect the absence |
16912 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16913 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16914 | |
38d518c9 EZ |
16915 | if (name != NULL) |
16916 | break; | |
16917 | } | |
16918 | ||
16919 | /* Is it an anonymous namespace? */ | |
16920 | ||
16921 | *is_anonymous = (name == NULL); | |
16922 | if (*is_anonymous) | |
2b1dbab0 | 16923 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16924 | |
16925 | return name; | |
d9fa45fe DC |
16926 | } |
16927 | ||
c906108c SS |
16928 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16929 | the user defined type vector. */ | |
16930 | ||
f792889a | 16931 | static struct type * |
e7c27a73 | 16932 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16933 | { |
518817b3 SM |
16934 | struct gdbarch *gdbarch |
16935 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16936 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16937 | struct type *type; |
8b2dbe47 KB |
16938 | struct attribute *attr_byte_size; |
16939 | struct attribute *attr_address_class; | |
16940 | int byte_size, addr_class; | |
7e314c57 JK |
16941 | struct type *target_type; |
16942 | ||
16943 | target_type = die_type (die, cu); | |
c906108c | 16944 | |
7e314c57 JK |
16945 | /* The die_type call above may have already set the type for this DIE. */ |
16946 | type = get_die_type (die, cu); | |
16947 | if (type) | |
16948 | return type; | |
16949 | ||
16950 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16951 | |
e142c38c | 16952 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16953 | if (attr_byte_size) |
16954 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16955 | else |
8b2dbe47 KB |
16956 | byte_size = cu_header->addr_size; |
16957 | ||
e142c38c | 16958 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16959 | if (attr_address_class) |
16960 | addr_class = DW_UNSND (attr_address_class); | |
16961 | else | |
16962 | addr_class = DW_ADDR_none; | |
16963 | ||
16964 | /* If the pointer size or address class is different than the | |
16965 | default, create a type variant marked as such and set the | |
16966 | length accordingly. */ | |
16967 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 16968 | { |
5e2b427d | 16969 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16970 | { |
16971 | int type_flags; | |
16972 | ||
849957d9 | 16973 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16974 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16975 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16976 | == 0); | |
8b2dbe47 KB |
16977 | type = make_type_with_address_space (type, type_flags); |
16978 | } | |
16979 | else if (TYPE_LENGTH (type) != byte_size) | |
16980 | { | |
3e43a32a MS |
16981 | complaint (&symfile_complaints, |
16982 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 16983 | } |
6e70227d | 16984 | else |
9a619af0 MS |
16985 | { |
16986 | /* Should we also complain about unhandled address classes? */ | |
16987 | } | |
c906108c | 16988 | } |
8b2dbe47 KB |
16989 | |
16990 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 16991 | return set_die_type (die, type, cu); |
c906108c SS |
16992 | } |
16993 | ||
16994 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16995 | the user defined type vector. */ | |
16996 | ||
f792889a | 16997 | static struct type * |
e7c27a73 | 16998 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16999 | { |
17000 | struct type *type; | |
17001 | struct type *to_type; | |
17002 | struct type *domain; | |
17003 | ||
e7c27a73 DJ |
17004 | to_type = die_type (die, cu); |
17005 | domain = die_containing_type (die, cu); | |
0d5de010 | 17006 | |
7e314c57 JK |
17007 | /* The calls above may have already set the type for this DIE. */ |
17008 | type = get_die_type (die, cu); | |
17009 | if (type) | |
17010 | return type; | |
17011 | ||
0d5de010 DJ |
17012 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17013 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17014 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17015 | { | |
518817b3 SM |
17016 | struct type *new_type |
17017 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17018 | |
17019 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17020 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17021 | TYPE_VARARGS (to_type)); | |
17022 | type = lookup_methodptr_type (new_type); | |
17023 | } | |
0d5de010 DJ |
17024 | else |
17025 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17026 | |
f792889a | 17027 | return set_die_type (die, type, cu); |
c906108c SS |
17028 | } |
17029 | ||
4297a3f0 | 17030 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17031 | the user defined type vector. */ |
17032 | ||
f792889a | 17033 | static struct type * |
4297a3f0 AV |
17034 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17035 | enum type_code refcode) | |
c906108c | 17036 | { |
e7c27a73 | 17037 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17038 | struct type *type, *target_type; |
c906108c SS |
17039 | struct attribute *attr; |
17040 | ||
4297a3f0 AV |
17041 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17042 | ||
7e314c57 JK |
17043 | target_type = die_type (die, cu); |
17044 | ||
17045 | /* The die_type call above may have already set the type for this DIE. */ | |
17046 | type = get_die_type (die, cu); | |
17047 | if (type) | |
17048 | return type; | |
17049 | ||
4297a3f0 | 17050 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17051 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17052 | if (attr) |
17053 | { | |
17054 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17055 | } | |
17056 | else | |
17057 | { | |
107d2387 | 17058 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17059 | } |
f792889a | 17060 | return set_die_type (die, type, cu); |
c906108c SS |
17061 | } |
17062 | ||
cf363f18 MW |
17063 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17064 | outputs DWARF type qualifiers that apply to an array, not the | |
17065 | element type. But GDB relies on the array element type to carry | |
17066 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17067 | specification. */ | |
17068 | ||
17069 | static struct type * | |
17070 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17071 | struct type *base_type, int cnst, int voltl) | |
17072 | { | |
17073 | struct type *el_type, *inner_array; | |
17074 | ||
17075 | base_type = copy_type (base_type); | |
17076 | inner_array = base_type; | |
17077 | ||
17078 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17079 | { | |
17080 | TYPE_TARGET_TYPE (inner_array) = | |
17081 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17082 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17083 | } | |
17084 | ||
17085 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17086 | cnst |= TYPE_CONST (el_type); | |
17087 | voltl |= TYPE_VOLATILE (el_type); | |
17088 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17089 | ||
17090 | return set_die_type (die, base_type, cu); | |
17091 | } | |
17092 | ||
f792889a | 17093 | static struct type * |
e7c27a73 | 17094 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17095 | { |
f792889a | 17096 | struct type *base_type, *cv_type; |
c906108c | 17097 | |
e7c27a73 | 17098 | base_type = die_type (die, cu); |
7e314c57 JK |
17099 | |
17100 | /* The die_type call above may have already set the type for this DIE. */ | |
17101 | cv_type = get_die_type (die, cu); | |
17102 | if (cv_type) | |
17103 | return cv_type; | |
17104 | ||
2f608a3a KW |
17105 | /* In case the const qualifier is applied to an array type, the element type |
17106 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17107 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17108 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17109 | |
f792889a DJ |
17110 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17111 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17112 | } |
17113 | ||
f792889a | 17114 | static struct type * |
e7c27a73 | 17115 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17116 | { |
f792889a | 17117 | struct type *base_type, *cv_type; |
c906108c | 17118 | |
e7c27a73 | 17119 | base_type = die_type (die, cu); |
7e314c57 JK |
17120 | |
17121 | /* The die_type call above may have already set the type for this DIE. */ | |
17122 | cv_type = get_die_type (die, cu); | |
17123 | if (cv_type) | |
17124 | return cv_type; | |
17125 | ||
cf363f18 MW |
17126 | /* In case the volatile qualifier is applied to an array type, the |
17127 | element type is so qualified, not the array type (section 6.7.3 | |
17128 | of C99). */ | |
17129 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17130 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17131 | ||
f792889a DJ |
17132 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17133 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17134 | } |
17135 | ||
06d66ee9 TT |
17136 | /* Handle DW_TAG_restrict_type. */ |
17137 | ||
17138 | static struct type * | |
17139 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17140 | { | |
17141 | struct type *base_type, *cv_type; | |
17142 | ||
17143 | base_type = die_type (die, cu); | |
17144 | ||
17145 | /* The die_type call above may have already set the type for this DIE. */ | |
17146 | cv_type = get_die_type (die, cu); | |
17147 | if (cv_type) | |
17148 | return cv_type; | |
17149 | ||
17150 | cv_type = make_restrict_type (base_type); | |
17151 | return set_die_type (die, cv_type, cu); | |
17152 | } | |
17153 | ||
a2c2acaf MW |
17154 | /* Handle DW_TAG_atomic_type. */ |
17155 | ||
17156 | static struct type * | |
17157 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17158 | { | |
17159 | struct type *base_type, *cv_type; | |
17160 | ||
17161 | base_type = die_type (die, cu); | |
17162 | ||
17163 | /* The die_type call above may have already set the type for this DIE. */ | |
17164 | cv_type = get_die_type (die, cu); | |
17165 | if (cv_type) | |
17166 | return cv_type; | |
17167 | ||
17168 | cv_type = make_atomic_type (base_type); | |
17169 | return set_die_type (die, cv_type, cu); | |
17170 | } | |
17171 | ||
c906108c SS |
17172 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17173 | the user defined type vector. It isn't really a user defined type, | |
17174 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17175 | attribute to reference it. */ | |
17176 | ||
f792889a | 17177 | static struct type * |
e7c27a73 | 17178 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17179 | { |
518817b3 | 17180 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17181 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17182 | struct type *type, *range_type, *index_type, *char_type; |
17183 | struct attribute *attr; | |
17184 | unsigned int length; | |
17185 | ||
e142c38c | 17186 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17187 | if (attr) |
17188 | { | |
17189 | length = DW_UNSND (attr); | |
17190 | } | |
17191 | else | |
17192 | { | |
0963b4bd | 17193 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17194 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17195 | if (attr) |
17196 | { | |
17197 | length = DW_UNSND (attr); | |
17198 | } | |
17199 | else | |
17200 | { | |
17201 | length = 1; | |
17202 | } | |
c906108c | 17203 | } |
6ccb9162 | 17204 | |
46bf5051 | 17205 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17206 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17207 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17208 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17209 | |
f792889a | 17210 | return set_die_type (die, type, cu); |
c906108c SS |
17211 | } |
17212 | ||
4d804846 JB |
17213 | /* Assuming that DIE corresponds to a function, returns nonzero |
17214 | if the function is prototyped. */ | |
17215 | ||
17216 | static int | |
17217 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17218 | { | |
17219 | struct attribute *attr; | |
17220 | ||
17221 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17222 | if (attr && (DW_UNSND (attr) != 0)) | |
17223 | return 1; | |
17224 | ||
17225 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17226 | is only meaninful for C, but the concept also extends to other | |
17227 | languages that allow unprototyped functions (Eg: Objective C). | |
17228 | For all other languages, assume that functions are always | |
17229 | prototyped. */ | |
17230 | if (cu->language != language_c | |
17231 | && cu->language != language_objc | |
17232 | && cu->language != language_opencl) | |
17233 | return 1; | |
17234 | ||
17235 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17236 | prototyped and unprototyped functions; default to prototyped, | |
17237 | since that is more common in modern code (and RealView warns | |
17238 | about unprototyped functions). */ | |
17239 | if (producer_is_realview (cu->producer)) | |
17240 | return 1; | |
17241 | ||
17242 | return 0; | |
17243 | } | |
17244 | ||
c906108c SS |
17245 | /* Handle DIES due to C code like: |
17246 | ||
17247 | struct foo | |
c5aa993b JM |
17248 | { |
17249 | int (*funcp)(int a, long l); | |
17250 | int b; | |
17251 | }; | |
c906108c | 17252 | |
0963b4bd | 17253 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17254 | |
f792889a | 17255 | static struct type * |
e7c27a73 | 17256 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17257 | { |
518817b3 | 17258 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17259 | struct type *type; /* Type that this function returns. */ |
17260 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17261 | struct attribute *attr; |
17262 | ||
e7c27a73 | 17263 | type = die_type (die, cu); |
7e314c57 JK |
17264 | |
17265 | /* The die_type call above may have already set the type for this DIE. */ | |
17266 | ftype = get_die_type (die, cu); | |
17267 | if (ftype) | |
17268 | return ftype; | |
17269 | ||
0c8b41f1 | 17270 | ftype = lookup_function_type (type); |
c906108c | 17271 | |
4d804846 | 17272 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17273 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17274 | |
c055b101 CV |
17275 | /* Store the calling convention in the type if it's available in |
17276 | the subroutine die. Otherwise set the calling convention to | |
17277 | the default value DW_CC_normal. */ | |
17278 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17279 | if (attr) |
17280 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17281 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17282 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17283 | else | |
17284 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17285 | |
743649fd MW |
17286 | /* Record whether the function returns normally to its caller or not |
17287 | if the DWARF producer set that information. */ | |
17288 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17289 | if (attr && (DW_UNSND (attr) != 0)) | |
17290 | TYPE_NO_RETURN (ftype) = 1; | |
17291 | ||
76c10ea2 GM |
17292 | /* We need to add the subroutine type to the die immediately so |
17293 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17294 | declared as the same subroutine type. */ |
76c10ea2 | 17295 | set_die_type (die, ftype, cu); |
6e70227d | 17296 | |
639d11d3 | 17297 | if (die->child != NULL) |
c906108c | 17298 | { |
bb5ed363 | 17299 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17300 | struct die_info *child_die; |
8072405b | 17301 | int nparams, iparams; |
c906108c SS |
17302 | |
17303 | /* Count the number of parameters. | |
17304 | FIXME: GDB currently ignores vararg functions, but knows about | |
17305 | vararg member functions. */ | |
8072405b | 17306 | nparams = 0; |
639d11d3 | 17307 | child_die = die->child; |
c906108c SS |
17308 | while (child_die && child_die->tag) |
17309 | { | |
17310 | if (child_die->tag == DW_TAG_formal_parameter) | |
17311 | nparams++; | |
17312 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17313 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17314 | child_die = sibling_die (child_die); |
17315 | } | |
17316 | ||
17317 | /* Allocate storage for parameters and fill them in. */ | |
17318 | TYPE_NFIELDS (ftype) = nparams; | |
17319 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17320 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17321 | |
8072405b JK |
17322 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17323 | even if we error out during the parameters reading below. */ | |
17324 | for (iparams = 0; iparams < nparams; iparams++) | |
17325 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17326 | ||
17327 | iparams = 0; | |
639d11d3 | 17328 | child_die = die->child; |
c906108c SS |
17329 | while (child_die && child_die->tag) |
17330 | { | |
17331 | if (child_die->tag == DW_TAG_formal_parameter) | |
17332 | { | |
3ce3b1ba PA |
17333 | struct type *arg_type; |
17334 | ||
17335 | /* DWARF version 2 has no clean way to discern C++ | |
17336 | static and non-static member functions. G++ helps | |
17337 | GDB by marking the first parameter for non-static | |
17338 | member functions (which is the this pointer) as | |
17339 | artificial. We pass this information to | |
17340 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17341 | ||
17342 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17343 | 4.5 does not yet generate. */ | |
e142c38c | 17344 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17345 | if (attr) |
17346 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17347 | else | |
9c37b5ae | 17348 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17349 | arg_type = die_type (child_die, cu); |
17350 | ||
17351 | /* RealView does not mark THIS as const, which the testsuite | |
17352 | expects. GCC marks THIS as const in method definitions, | |
17353 | but not in the class specifications (GCC PR 43053). */ | |
17354 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17355 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17356 | { | |
17357 | int is_this = 0; | |
17358 | struct dwarf2_cu *arg_cu = cu; | |
17359 | const char *name = dwarf2_name (child_die, cu); | |
17360 | ||
17361 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17362 | if (attr) | |
17363 | { | |
17364 | /* If the compiler emits this, use it. */ | |
17365 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17366 | is_this = 1; | |
17367 | } | |
17368 | else if (name && strcmp (name, "this") == 0) | |
17369 | /* Function definitions will have the argument names. */ | |
17370 | is_this = 1; | |
17371 | else if (name == NULL && iparams == 0) | |
17372 | /* Declarations may not have the names, so like | |
17373 | elsewhere in GDB, assume an artificial first | |
17374 | argument is "this". */ | |
17375 | is_this = 1; | |
17376 | ||
17377 | if (is_this) | |
17378 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17379 | arg_type, 0); | |
17380 | } | |
17381 | ||
17382 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17383 | iparams++; |
17384 | } | |
17385 | child_die = sibling_die (child_die); | |
17386 | } | |
17387 | } | |
17388 | ||
76c10ea2 | 17389 | return ftype; |
c906108c SS |
17390 | } |
17391 | ||
f792889a | 17392 | static struct type * |
e7c27a73 | 17393 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17394 | { |
518817b3 | 17395 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17396 | const char *name = NULL; |
3c8e0968 | 17397 | struct type *this_type, *target_type; |
c906108c | 17398 | |
94af9270 | 17399 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17400 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17401 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17402 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17403 | target_type = die_type (die, cu); |
17404 | if (target_type != this_type) | |
17405 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17406 | else | |
17407 | { | |
17408 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17409 | spec and cause infinite loops in GDB. */ | |
17410 | complaint (&symfile_complaints, | |
17411 | _("Self-referential DW_TAG_typedef " | |
17412 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 17413 | to_underlying (die->sect_off), objfile_name (objfile)); |
3c8e0968 DE |
17414 | TYPE_TARGET_TYPE (this_type) = NULL; |
17415 | } | |
f792889a | 17416 | return this_type; |
c906108c SS |
17417 | } |
17418 | ||
9b790ce7 UW |
17419 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17420 | (which may be different from NAME) to the architecture back-end to allow | |
17421 | it to guess the correct format if necessary. */ | |
17422 | ||
17423 | static struct type * | |
17424 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17425 | const char *name_hint) | |
17426 | { | |
17427 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17428 | const struct floatformat **format; | |
17429 | struct type *type; | |
17430 | ||
17431 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17432 | if (format) | |
17433 | type = init_float_type (objfile, bits, name, format); | |
17434 | else | |
77b7c781 | 17435 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17436 | |
17437 | return type; | |
17438 | } | |
17439 | ||
c906108c SS |
17440 | /* Find a representation of a given base type and install |
17441 | it in the TYPE field of the die. */ | |
17442 | ||
f792889a | 17443 | static struct type * |
e7c27a73 | 17444 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17445 | { |
518817b3 | 17446 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17447 | struct type *type; |
17448 | struct attribute *attr; | |
19f392bc | 17449 | int encoding = 0, bits = 0; |
15d034d0 | 17450 | const char *name; |
c906108c | 17451 | |
e142c38c | 17452 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17453 | if (attr) |
17454 | { | |
17455 | encoding = DW_UNSND (attr); | |
17456 | } | |
e142c38c | 17457 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17458 | if (attr) |
17459 | { | |
19f392bc | 17460 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17461 | } |
39cbfefa | 17462 | name = dwarf2_name (die, cu); |
6ccb9162 | 17463 | if (!name) |
c906108c | 17464 | { |
6ccb9162 UW |
17465 | complaint (&symfile_complaints, |
17466 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 17467 | } |
6ccb9162 UW |
17468 | |
17469 | switch (encoding) | |
c906108c | 17470 | { |
6ccb9162 UW |
17471 | case DW_ATE_address: |
17472 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17473 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17474 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17475 | break; |
17476 | case DW_ATE_boolean: | |
19f392bc | 17477 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17478 | break; |
17479 | case DW_ATE_complex_float: | |
9b790ce7 | 17480 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17481 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17482 | break; |
17483 | case DW_ATE_decimal_float: | |
19f392bc | 17484 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17485 | break; |
17486 | case DW_ATE_float: | |
9b790ce7 | 17487 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17488 | break; |
17489 | case DW_ATE_signed: | |
19f392bc | 17490 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17491 | break; |
17492 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17493 | if (cu->language == language_fortran |
17494 | && name | |
61012eef | 17495 | && startswith (name, "character(")) |
19f392bc UW |
17496 | type = init_character_type (objfile, bits, 1, name); |
17497 | else | |
17498 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17499 | break; |
17500 | case DW_ATE_signed_char: | |
6e70227d | 17501 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17502 | || cu->language == language_pascal |
17503 | || cu->language == language_fortran) | |
19f392bc UW |
17504 | type = init_character_type (objfile, bits, 0, name); |
17505 | else | |
17506 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17507 | break; |
17508 | case DW_ATE_unsigned_char: | |
868a0084 | 17509 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17510 | || cu->language == language_pascal |
c44af4eb TT |
17511 | || cu->language == language_fortran |
17512 | || cu->language == language_rust) | |
19f392bc UW |
17513 | type = init_character_type (objfile, bits, 1, name); |
17514 | else | |
17515 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17516 | break; |
75079b2b | 17517 | case DW_ATE_UTF: |
53e710ac PA |
17518 | { |
17519 | gdbarch *arch = get_objfile_arch (objfile); | |
17520 | ||
17521 | if (bits == 16) | |
17522 | type = builtin_type (arch)->builtin_char16; | |
17523 | else if (bits == 32) | |
17524 | type = builtin_type (arch)->builtin_char32; | |
17525 | else | |
17526 | { | |
17527 | complaint (&symfile_complaints, | |
17528 | _("unsupported DW_ATE_UTF bit size: '%d'"), | |
17529 | bits); | |
17530 | type = init_integer_type (objfile, bits, 1, name); | |
17531 | } | |
17532 | return set_die_type (die, type, cu); | |
17533 | } | |
75079b2b TT |
17534 | break; |
17535 | ||
6ccb9162 UW |
17536 | default: |
17537 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
17538 | dwarf_type_encoding_name (encoding)); | |
77b7c781 | 17539 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17540 | break; |
c906108c | 17541 | } |
6ccb9162 | 17542 | |
0114d602 | 17543 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17544 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17545 | |
f792889a | 17546 | return set_die_type (die, type, cu); |
c906108c SS |
17547 | } |
17548 | ||
80180f79 SA |
17549 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17550 | resulting value of the attribute into struct bound_prop. | |
17551 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17552 | ||
17553 | static int | |
17554 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17555 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17556 | { | |
17557 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17558 | struct obstack *obstack |
17559 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17560 | |
17561 | if (attr == NULL || prop == NULL) | |
17562 | return 0; | |
17563 | ||
17564 | if (attr_form_is_block (attr)) | |
17565 | { | |
8d749320 | 17566 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17567 | baton->referenced_type = NULL; |
17568 | baton->locexpr.per_cu = cu->per_cu; | |
17569 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17570 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17571 | prop->data.baton = baton; | |
17572 | prop->kind = PROP_LOCEXPR; | |
17573 | gdb_assert (prop->data.baton != NULL); | |
17574 | } | |
17575 | else if (attr_form_is_ref (attr)) | |
17576 | { | |
17577 | struct dwarf2_cu *target_cu = cu; | |
17578 | struct die_info *target_die; | |
17579 | struct attribute *target_attr; | |
17580 | ||
17581 | target_die = follow_die_ref (die, attr, &target_cu); | |
17582 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17583 | if (target_attr == NULL) |
17584 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17585 | target_cu); | |
80180f79 SA |
17586 | if (target_attr == NULL) |
17587 | return 0; | |
17588 | ||
df25ebbd | 17589 | switch (target_attr->name) |
80180f79 | 17590 | { |
df25ebbd JB |
17591 | case DW_AT_location: |
17592 | if (attr_form_is_section_offset (target_attr)) | |
17593 | { | |
8d749320 | 17594 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17595 | baton->referenced_type = die_type (target_die, target_cu); |
17596 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17597 | prop->data.baton = baton; | |
17598 | prop->kind = PROP_LOCLIST; | |
17599 | gdb_assert (prop->data.baton != NULL); | |
17600 | } | |
17601 | else if (attr_form_is_block (target_attr)) | |
17602 | { | |
8d749320 | 17603 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17604 | baton->referenced_type = die_type (target_die, target_cu); |
17605 | baton->locexpr.per_cu = cu->per_cu; | |
17606 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17607 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17608 | prop->data.baton = baton; | |
17609 | prop->kind = PROP_LOCEXPR; | |
17610 | gdb_assert (prop->data.baton != NULL); | |
17611 | } | |
17612 | else | |
17613 | { | |
17614 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17615 | "dynamic property"); | |
17616 | return 0; | |
17617 | } | |
17618 | break; | |
17619 | case DW_AT_data_member_location: | |
17620 | { | |
17621 | LONGEST offset; | |
17622 | ||
17623 | if (!handle_data_member_location (target_die, target_cu, | |
17624 | &offset)) | |
17625 | return 0; | |
17626 | ||
8d749320 | 17627 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17628 | baton->referenced_type = read_type_die (target_die->parent, |
17629 | target_cu); | |
df25ebbd JB |
17630 | baton->offset_info.offset = offset; |
17631 | baton->offset_info.type = die_type (target_die, target_cu); | |
17632 | prop->data.baton = baton; | |
17633 | prop->kind = PROP_ADDR_OFFSET; | |
17634 | break; | |
17635 | } | |
80180f79 SA |
17636 | } |
17637 | } | |
17638 | else if (attr_form_is_constant (attr)) | |
17639 | { | |
17640 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17641 | prop->kind = PROP_CONST; | |
17642 | } | |
17643 | else | |
17644 | { | |
17645 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17646 | dwarf2_name (die, cu)); | |
17647 | return 0; | |
17648 | } | |
17649 | ||
17650 | return 1; | |
17651 | } | |
17652 | ||
a02abb62 JB |
17653 | /* Read the given DW_AT_subrange DIE. */ |
17654 | ||
f792889a | 17655 | static struct type * |
a02abb62 JB |
17656 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17657 | { | |
4c9ad8c2 | 17658 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17659 | struct type *range_type; |
17660 | struct attribute *attr; | |
729efb13 | 17661 | struct dynamic_prop low, high; |
4fae6e18 | 17662 | int low_default_is_valid; |
c451ebe5 | 17663 | int high_bound_is_count = 0; |
15d034d0 | 17664 | const char *name; |
43bbcdc2 | 17665 | LONGEST negative_mask; |
e77813c8 | 17666 | |
4c9ad8c2 TT |
17667 | orig_base_type = die_type (die, cu); |
17668 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17669 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17670 | creating the range type, but we use the result of check_typedef | |
17671 | when examining properties of the type. */ | |
17672 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17673 | |
7e314c57 JK |
17674 | /* The die_type call above may have already set the type for this DIE. */ |
17675 | range_type = get_die_type (die, cu); | |
17676 | if (range_type) | |
17677 | return range_type; | |
17678 | ||
729efb13 SA |
17679 | low.kind = PROP_CONST; |
17680 | high.kind = PROP_CONST; | |
17681 | high.data.const_val = 0; | |
17682 | ||
4fae6e18 JK |
17683 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17684 | omitting DW_AT_lower_bound. */ | |
17685 | switch (cu->language) | |
6e70227d | 17686 | { |
4fae6e18 JK |
17687 | case language_c: |
17688 | case language_cplus: | |
729efb13 | 17689 | low.data.const_val = 0; |
4fae6e18 JK |
17690 | low_default_is_valid = 1; |
17691 | break; | |
17692 | case language_fortran: | |
729efb13 | 17693 | low.data.const_val = 1; |
4fae6e18 JK |
17694 | low_default_is_valid = 1; |
17695 | break; | |
17696 | case language_d: | |
4fae6e18 | 17697 | case language_objc: |
c44af4eb | 17698 | case language_rust: |
729efb13 | 17699 | low.data.const_val = 0; |
4fae6e18 JK |
17700 | low_default_is_valid = (cu->header.version >= 4); |
17701 | break; | |
17702 | case language_ada: | |
17703 | case language_m2: | |
17704 | case language_pascal: | |
729efb13 | 17705 | low.data.const_val = 1; |
4fae6e18 JK |
17706 | low_default_is_valid = (cu->header.version >= 4); |
17707 | break; | |
17708 | default: | |
729efb13 | 17709 | low.data.const_val = 0; |
4fae6e18 JK |
17710 | low_default_is_valid = 0; |
17711 | break; | |
a02abb62 JB |
17712 | } |
17713 | ||
e142c38c | 17714 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17715 | if (attr) |
11c1ba78 | 17716 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
17717 | else if (!low_default_is_valid) |
17718 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
17719 | "- DIE at 0x%x [in module %s]"), | |
e3b94546 | 17720 | to_underlying (die->sect_off), |
518817b3 | 17721 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17722 | |
e142c38c | 17723 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 17724 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
17725 | { |
17726 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 17727 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17728 | { |
c451ebe5 SA |
17729 | /* If bounds are constant do the final calculation here. */ |
17730 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17731 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17732 | else | |
17733 | high_bound_is_count = 1; | |
c2ff108b | 17734 | } |
e77813c8 PM |
17735 | } |
17736 | ||
17737 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17738 | without specifying a base type. | |
17739 | In that case, the base type must be set to the type of | |
17740 | the lower bound, upper bound or count, in that order, if any of these | |
17741 | three attributes references an object that has a type. | |
17742 | If no base type is found, the Dwarf-2 specifications say that | |
17743 | a signed integer type of size equal to the size of an address should | |
17744 | be used. | |
17745 | For the following C code: `extern char gdb_int [];' | |
17746 | GCC produces an empty range DIE. | |
17747 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17748 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17749 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17750 | { | |
518817b3 | 17751 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17752 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17753 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17754 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17755 | ||
17756 | /* Test "int", "long int", and "long long int" objfile types, | |
17757 | and select the first one having a size above or equal to the | |
17758 | architecture address size. */ | |
17759 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17760 | base_type = int_type; | |
17761 | else | |
17762 | { | |
17763 | int_type = objfile_type (objfile)->builtin_long; | |
17764 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17765 | base_type = int_type; | |
17766 | else | |
17767 | { | |
17768 | int_type = objfile_type (objfile)->builtin_long_long; | |
17769 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17770 | base_type = int_type; | |
17771 | } | |
17772 | } | |
17773 | } | |
a02abb62 | 17774 | |
dbb9c2b1 JB |
17775 | /* Normally, the DWARF producers are expected to use a signed |
17776 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17777 | But this is unfortunately not always the case, as witnessed | |
17778 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17779 | is used instead. To work around that ambiguity, we treat | |
17780 | the bounds as signed, and thus sign-extend their values, when | |
17781 | the base type is signed. */ | |
6e70227d | 17782 | negative_mask = |
66c6502d | 17783 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17784 | if (low.kind == PROP_CONST |
17785 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17786 | low.data.const_val |= negative_mask; | |
17787 | if (high.kind == PROP_CONST | |
17788 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17789 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17790 | |
729efb13 | 17791 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17792 | |
c451ebe5 SA |
17793 | if (high_bound_is_count) |
17794 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17795 | ||
c2ff108b JK |
17796 | /* Ada expects an empty array on no boundary attributes. */ |
17797 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17798 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17799 | |
39cbfefa DJ |
17800 | name = dwarf2_name (die, cu); |
17801 | if (name) | |
17802 | TYPE_NAME (range_type) = name; | |
6e70227d | 17803 | |
e142c38c | 17804 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17805 | if (attr) |
17806 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17807 | ||
7e314c57 JK |
17808 | set_die_type (die, range_type, cu); |
17809 | ||
17810 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17811 | set_descriptive_type (range_type, die, cu); |
17812 | ||
7e314c57 | 17813 | return range_type; |
a02abb62 | 17814 | } |
6e70227d | 17815 | |
f792889a | 17816 | static struct type * |
81a17f79 JB |
17817 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17818 | { | |
17819 | struct type *type; | |
81a17f79 | 17820 | |
518817b3 SM |
17821 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17822 | NULL); | |
0114d602 | 17823 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17824 | |
74a2f8ff JB |
17825 | /* In Ada, an unspecified type is typically used when the description |
17826 | of the type is defered to a different unit. When encountering | |
17827 | such a type, we treat it as a stub, and try to resolve it later on, | |
17828 | when needed. */ | |
17829 | if (cu->language == language_ada) | |
17830 | TYPE_STUB (type) = 1; | |
17831 | ||
f792889a | 17832 | return set_die_type (die, type, cu); |
81a17f79 | 17833 | } |
a02abb62 | 17834 | |
639d11d3 DC |
17835 | /* Read a single die and all its descendents. Set the die's sibling |
17836 | field to NULL; set other fields in the die correctly, and set all | |
17837 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17838 | location of the info_ptr after reading all of those dies. PARENT | |
17839 | is the parent of the die in question. */ | |
17840 | ||
17841 | static struct die_info * | |
dee91e82 | 17842 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17843 | const gdb_byte *info_ptr, |
17844 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17845 | struct die_info *parent) |
639d11d3 DC |
17846 | { |
17847 | struct die_info *die; | |
d521ce57 | 17848 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17849 | int has_children; |
17850 | ||
bf6af496 | 17851 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17852 | if (die == NULL) |
17853 | { | |
17854 | *new_info_ptr = cur_ptr; | |
17855 | return NULL; | |
17856 | } | |
93311388 | 17857 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17858 | |
17859 | if (has_children) | |
bf6af496 | 17860 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17861 | else |
17862 | { | |
17863 | die->child = NULL; | |
17864 | *new_info_ptr = cur_ptr; | |
17865 | } | |
17866 | ||
17867 | die->sibling = NULL; | |
17868 | die->parent = parent; | |
17869 | return die; | |
17870 | } | |
17871 | ||
17872 | /* Read a die, all of its descendents, and all of its siblings; set | |
17873 | all of the fields of all of the dies correctly. Arguments are as | |
17874 | in read_die_and_children. */ | |
17875 | ||
17876 | static struct die_info * | |
bf6af496 | 17877 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17878 | const gdb_byte *info_ptr, |
17879 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17880 | struct die_info *parent) |
639d11d3 DC |
17881 | { |
17882 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17883 | const gdb_byte *cur_ptr; |
639d11d3 | 17884 | |
c906108c | 17885 | cur_ptr = info_ptr; |
639d11d3 DC |
17886 | first_die = last_sibling = NULL; |
17887 | ||
17888 | while (1) | |
c906108c | 17889 | { |
639d11d3 | 17890 | struct die_info *die |
dee91e82 | 17891 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17892 | |
1d325ec1 | 17893 | if (die == NULL) |
c906108c | 17894 | { |
639d11d3 DC |
17895 | *new_info_ptr = cur_ptr; |
17896 | return first_die; | |
c906108c | 17897 | } |
1d325ec1 DJ |
17898 | |
17899 | if (!first_die) | |
17900 | first_die = die; | |
c906108c | 17901 | else |
1d325ec1 DJ |
17902 | last_sibling->sibling = die; |
17903 | ||
17904 | last_sibling = die; | |
c906108c | 17905 | } |
c906108c SS |
17906 | } |
17907 | ||
bf6af496 DE |
17908 | /* Read a die, all of its descendents, and all of its siblings; set |
17909 | all of the fields of all of the dies correctly. Arguments are as | |
17910 | in read_die_and_children. | |
17911 | This the main entry point for reading a DIE and all its children. */ | |
17912 | ||
17913 | static struct die_info * | |
17914 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17915 | const gdb_byte *info_ptr, |
17916 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17917 | struct die_info *parent) |
17918 | { | |
17919 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17920 | new_info_ptr, parent); | |
17921 | ||
b4f54984 | 17922 | if (dwarf_die_debug) |
bf6af496 DE |
17923 | { |
17924 | fprintf_unfiltered (gdb_stdlog, | |
17925 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17926 | get_section_name (reader->die_section), |
bf6af496 DE |
17927 | (unsigned) (info_ptr - reader->die_section->buffer), |
17928 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17929 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17930 | } |
17931 | ||
17932 | return die; | |
17933 | } | |
17934 | ||
3019eac3 DE |
17935 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17936 | attributes. | |
17937 | The caller is responsible for filling in the extra attributes | |
17938 | and updating (*DIEP)->num_attrs. | |
17939 | Set DIEP to point to a newly allocated die with its information, | |
17940 | except for its child, sibling, and parent fields. | |
17941 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 17942 | |
d521ce57 | 17943 | static const gdb_byte * |
3019eac3 | 17944 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17945 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 17946 | int *has_children, int num_extra_attrs) |
93311388 | 17947 | { |
b64f50a1 | 17948 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17949 | struct abbrev_info *abbrev; |
17950 | struct die_info *die; | |
17951 | struct dwarf2_cu *cu = reader->cu; | |
17952 | bfd *abfd = reader->abfd; | |
17953 | ||
9c541725 | 17954 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17955 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17956 | info_ptr += bytes_read; | |
17957 | if (!abbrev_number) | |
17958 | { | |
17959 | *diep = NULL; | |
17960 | *has_children = 0; | |
17961 | return info_ptr; | |
17962 | } | |
17963 | ||
685af9cd | 17964 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17965 | if (!abbrev) |
348e048f DE |
17966 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17967 | abbrev_number, | |
17968 | bfd_get_filename (abfd)); | |
17969 | ||
3019eac3 | 17970 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17971 | die->sect_off = sect_off; |
93311388 DE |
17972 | die->tag = abbrev->tag; |
17973 | die->abbrev = abbrev_number; | |
17974 | ||
3019eac3 DE |
17975 | /* Make the result usable. |
17976 | The caller needs to update num_attrs after adding the extra | |
17977 | attributes. */ | |
93311388 DE |
17978 | die->num_attrs = abbrev->num_attrs; |
17979 | ||
17980 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
17981 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
17982 | info_ptr); | |
93311388 DE |
17983 | |
17984 | *diep = die; | |
17985 | *has_children = abbrev->has_children; | |
17986 | return info_ptr; | |
17987 | } | |
17988 | ||
3019eac3 DE |
17989 | /* Read a die and all its attributes. |
17990 | Set DIEP to point to a newly allocated die with its information, | |
17991 | except for its child, sibling, and parent fields. | |
17992 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
17993 | ||
d521ce57 | 17994 | static const gdb_byte * |
3019eac3 | 17995 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 17996 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
17997 | int *has_children) |
17998 | { | |
d521ce57 | 17999 | const gdb_byte *result; |
bf6af496 DE |
18000 | |
18001 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18002 | ||
b4f54984 | 18003 | if (dwarf_die_debug) |
bf6af496 DE |
18004 | { |
18005 | fprintf_unfiltered (gdb_stdlog, | |
18006 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18007 | get_section_name (reader->die_section), |
bf6af496 DE |
18008 | (unsigned) (info_ptr - reader->die_section->buffer), |
18009 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18010 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18011 | } |
18012 | ||
18013 | return result; | |
3019eac3 | 18014 | } |
433df2d4 DE |
18015 | \f |
18016 | /* Abbreviation tables. | |
3019eac3 | 18017 | |
433df2d4 | 18018 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18019 | stored in a separate .debug_abbrev section. Before we read any |
18020 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18021 | in a hash table. */ |
18022 | ||
18023 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18024 | ||
685af9cd TT |
18025 | struct abbrev_info * |
18026 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18027 | { |
18028 | struct abbrev_info *abbrev; | |
18029 | ||
685af9cd | 18030 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18031 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18032 | |
433df2d4 DE |
18033 | return abbrev; |
18034 | } | |
18035 | ||
18036 | /* Add an abbreviation to the table. */ | |
c906108c | 18037 | |
685af9cd TT |
18038 | void |
18039 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18040 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18041 | { |
18042 | unsigned int hash_number; | |
18043 | ||
18044 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18045 | abbrev->next = m_abbrevs[hash_number]; |
18046 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18047 | } |
dee91e82 | 18048 | |
433df2d4 DE |
18049 | /* Look up an abbrev in the table. |
18050 | Returns NULL if the abbrev is not found. */ | |
18051 | ||
685af9cd TT |
18052 | struct abbrev_info * |
18053 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18054 | { |
433df2d4 DE |
18055 | unsigned int hash_number; |
18056 | struct abbrev_info *abbrev; | |
18057 | ||
18058 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18059 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18060 | |
18061 | while (abbrev) | |
18062 | { | |
18063 | if (abbrev->number == abbrev_number) | |
18064 | return abbrev; | |
18065 | abbrev = abbrev->next; | |
18066 | } | |
18067 | return NULL; | |
18068 | } | |
18069 | ||
18070 | /* Read in an abbrev table. */ | |
18071 | ||
685af9cd | 18072 | static abbrev_table_up |
ed2dc618 SM |
18073 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18074 | struct dwarf2_section_info *section, | |
9c541725 | 18075 | sect_offset sect_off) |
433df2d4 DE |
18076 | { |
18077 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18078 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18079 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18080 | struct abbrev_info *cur_abbrev; |
18081 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18082 | unsigned int abbrev_form; |
f3dd6933 DJ |
18083 | struct attr_abbrev *cur_attrs; |
18084 | unsigned int allocated_attrs; | |
c906108c | 18085 | |
685af9cd | 18086 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18087 | |
433df2d4 | 18088 | dwarf2_read_section (objfile, section); |
9c541725 | 18089 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18090 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18091 | abbrev_ptr += bytes_read; | |
18092 | ||
f3dd6933 | 18093 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18094 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18095 | |
0963b4bd | 18096 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18097 | while (abbrev_number) |
18098 | { | |
685af9cd | 18099 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18100 | |
18101 | /* read in abbrev header */ | |
18102 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18103 | cur_abbrev->tag |
18104 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18105 | abbrev_ptr += bytes_read; |
18106 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18107 | abbrev_ptr += 1; | |
18108 | ||
18109 | /* now read in declarations */ | |
22d2f3ab | 18110 | for (;;) |
c906108c | 18111 | { |
43988095 JK |
18112 | LONGEST implicit_const; |
18113 | ||
22d2f3ab JK |
18114 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18115 | abbrev_ptr += bytes_read; | |
18116 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18117 | abbrev_ptr += bytes_read; | |
43988095 JK |
18118 | if (abbrev_form == DW_FORM_implicit_const) |
18119 | { | |
18120 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18121 | &bytes_read); | |
18122 | abbrev_ptr += bytes_read; | |
18123 | } | |
18124 | else | |
18125 | { | |
18126 | /* Initialize it due to a false compiler warning. */ | |
18127 | implicit_const = -1; | |
18128 | } | |
22d2f3ab JK |
18129 | |
18130 | if (abbrev_name == 0) | |
18131 | break; | |
18132 | ||
f3dd6933 | 18133 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18134 | { |
f3dd6933 DJ |
18135 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18136 | cur_attrs | |
224c3ddb | 18137 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18138 | } |
ae038cb0 | 18139 | |
aead7601 SM |
18140 | cur_attrs[cur_abbrev->num_attrs].name |
18141 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18142 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18143 | = (enum dwarf_form) abbrev_form; |
43988095 | 18144 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18145 | ++cur_abbrev->num_attrs; |
c906108c SS |
18146 | } |
18147 | ||
8d749320 SM |
18148 | cur_abbrev->attrs = |
18149 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18150 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18151 | memcpy (cur_abbrev->attrs, cur_attrs, |
18152 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18153 | ||
685af9cd | 18154 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18155 | |
18156 | /* Get next abbreviation. | |
18157 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18158 | always properly terminated with an abbrev number of 0. |
18159 | Exit loop if we encounter an abbreviation which we have | |
18160 | already read (which means we are about to read the abbreviations | |
18161 | for the next compile unit) or if the end of the abbreviation | |
18162 | table is reached. */ | |
433df2d4 | 18163 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18164 | break; |
18165 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18166 | abbrev_ptr += bytes_read; | |
685af9cd | 18167 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18168 | break; |
18169 | } | |
f3dd6933 DJ |
18170 | |
18171 | xfree (cur_attrs); | |
433df2d4 | 18172 | return abbrev_table; |
c906108c SS |
18173 | } |
18174 | ||
72bf9492 DJ |
18175 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18176 | symbol for. */ | |
18177 | ||
18178 | static int | |
18179 | is_type_tag_for_partial (int tag) | |
18180 | { | |
18181 | switch (tag) | |
18182 | { | |
18183 | #if 0 | |
18184 | /* Some types that would be reasonable to generate partial symbols for, | |
18185 | that we don't at present. */ | |
18186 | case DW_TAG_array_type: | |
18187 | case DW_TAG_file_type: | |
18188 | case DW_TAG_ptr_to_member_type: | |
18189 | case DW_TAG_set_type: | |
18190 | case DW_TAG_string_type: | |
18191 | case DW_TAG_subroutine_type: | |
18192 | #endif | |
18193 | case DW_TAG_base_type: | |
18194 | case DW_TAG_class_type: | |
680b30c7 | 18195 | case DW_TAG_interface_type: |
72bf9492 DJ |
18196 | case DW_TAG_enumeration_type: |
18197 | case DW_TAG_structure_type: | |
18198 | case DW_TAG_subrange_type: | |
18199 | case DW_TAG_typedef: | |
18200 | case DW_TAG_union_type: | |
18201 | return 1; | |
18202 | default: | |
18203 | return 0; | |
18204 | } | |
18205 | } | |
18206 | ||
18207 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18208 | ||
18209 | static struct partial_die_info * | |
dee91e82 | 18210 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18211 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18212 | { |
dee91e82 | 18213 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18214 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 DJ |
18215 | struct partial_die_info *part_die; |
18216 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
72bf9492 | 18217 | unsigned int bytes_read; |
5afb4e99 | 18218 | unsigned int load_all = 0; |
72bf9492 DJ |
18219 | int nesting_level = 1; |
18220 | ||
18221 | parent_die = NULL; | |
18222 | last_die = NULL; | |
18223 | ||
7adf1e79 DE |
18224 | gdb_assert (cu->per_cu != NULL); |
18225 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18226 | load_all = 1; |
18227 | ||
72bf9492 DJ |
18228 | cu->partial_dies |
18229 | = htab_create_alloc_ex (cu->header.length / 12, | |
18230 | partial_die_hash, | |
18231 | partial_die_eq, | |
18232 | NULL, | |
18233 | &cu->comp_unit_obstack, | |
18234 | hashtab_obstack_allocate, | |
18235 | dummy_obstack_deallocate); | |
18236 | ||
8d749320 | 18237 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
18238 | |
18239 | while (1) | |
18240 | { | |
685af9cd | 18241 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18242 | |
18243 | /* A NULL abbrev means the end of a series of children. */ | |
18244 | if (abbrev == NULL) | |
18245 | { | |
18246 | if (--nesting_level == 0) | |
18247 | { | |
18248 | /* PART_DIE was probably the last thing allocated on the | |
18249 | comp_unit_obstack, so we could call obstack_free | |
18250 | here. We don't do that because the waste is small, | |
18251 | and will be cleaned up when we're done with this | |
18252 | compilation unit. This way, we're also more robust | |
18253 | against other users of the comp_unit_obstack. */ | |
18254 | return first_die; | |
18255 | } | |
18256 | info_ptr += bytes_read; | |
18257 | last_die = parent_die; | |
18258 | parent_die = parent_die->die_parent; | |
18259 | continue; | |
18260 | } | |
18261 | ||
98bfdba5 PA |
18262 | /* Check for template arguments. We never save these; if |
18263 | they're seen, we just mark the parent, and go on our way. */ | |
18264 | if (parent_die != NULL | |
18265 | && cu->language == language_cplus | |
18266 | && (abbrev->tag == DW_TAG_template_type_param | |
18267 | || abbrev->tag == DW_TAG_template_value_param)) | |
18268 | { | |
18269 | parent_die->has_template_arguments = 1; | |
18270 | ||
18271 | if (!load_all) | |
18272 | { | |
18273 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18274 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18275 | continue; |
18276 | } | |
18277 | } | |
18278 | ||
0d99eb77 | 18279 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18280 | Skip their other children. */ |
18281 | if (!load_all | |
18282 | && cu->language == language_cplus | |
18283 | && parent_die != NULL | |
18284 | && parent_die->tag == DW_TAG_subprogram) | |
18285 | { | |
dee91e82 | 18286 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18287 | continue; |
18288 | } | |
18289 | ||
5afb4e99 DJ |
18290 | /* Check whether this DIE is interesting enough to save. Normally |
18291 | we would not be interested in members here, but there may be | |
18292 | later variables referencing them via DW_AT_specification (for | |
18293 | static members). */ | |
18294 | if (!load_all | |
18295 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18296 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18297 | && abbrev->tag != DW_TAG_enumerator |
18298 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18299 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18300 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18301 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18302 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18303 | && abbrev->tag != DW_TAG_module |
95554aad | 18304 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18305 | && abbrev->tag != DW_TAG_imported_unit |
18306 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18307 | { |
18308 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18309 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18310 | continue; |
18311 | } | |
18312 | ||
dee91e82 DE |
18313 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
18314 | info_ptr); | |
72bf9492 DJ |
18315 | |
18316 | /* This two-pass algorithm for processing partial symbols has a | |
18317 | high cost in cache pressure. Thus, handle some simple cases | |
18318 | here which cover the majority of C partial symbols. DIEs | |
18319 | which neither have specification tags in them, nor could have | |
18320 | specification tags elsewhere pointing at them, can simply be | |
18321 | processed and discarded. | |
18322 | ||
18323 | This segment is also optional; scan_partial_symbols and | |
18324 | add_partial_symbol will handle these DIEs if we chain | |
18325 | them in normally. When compilers which do not emit large | |
18326 | quantities of duplicate debug information are more common, | |
18327 | this code can probably be removed. */ | |
18328 | ||
18329 | /* Any complete simple types at the top level (pretty much all | |
18330 | of them, for a language without namespaces), can be processed | |
18331 | directly. */ | |
18332 | if (parent_die == NULL | |
18333 | && part_die->has_specification == 0 | |
18334 | && part_die->is_declaration == 0 | |
d8228535 | 18335 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
18336 | || part_die->tag == DW_TAG_base_type |
18337 | || part_die->tag == DW_TAG_subrange_type)) | |
18338 | { | |
18339 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 18340 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 18341 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 18342 | &objfile->static_psymbols, |
1762568f | 18343 | 0, cu->language, objfile); |
dee91e82 | 18344 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
18345 | continue; |
18346 | } | |
18347 | ||
d8228535 JK |
18348 | /* The exception for DW_TAG_typedef with has_children above is |
18349 | a workaround of GCC PR debug/47510. In the case of this complaint | |
18350 | type_name_no_tag_or_error will error on such types later. | |
18351 | ||
18352 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18353 | it could not find the child DIEs referenced later, this is checked | |
18354 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18355 | ||
18356 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
18357 | complaint (&symfile_complaints, | |
18358 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
18359 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 18360 | to_underlying (part_die->sect_off), objfile_name (objfile)); |
d8228535 | 18361 | |
72bf9492 DJ |
18362 | /* If we're at the second level, and we're an enumerator, and |
18363 | our parent has no specification (meaning possibly lives in a | |
18364 | namespace elsewhere), then we can add the partial symbol now | |
18365 | instead of queueing it. */ | |
18366 | if (part_die->tag == DW_TAG_enumerator | |
18367 | && parent_die != NULL | |
18368 | && parent_die->die_parent == NULL | |
18369 | && parent_die->tag == DW_TAG_enumeration_type | |
18370 | && parent_die->has_specification == 0) | |
18371 | { | |
18372 | if (part_die->name == NULL) | |
3e43a32a MS |
18373 | complaint (&symfile_complaints, |
18374 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 18375 | else if (building_psymtab) |
04a679b8 | 18376 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 18377 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 18378 | cu->language == language_cplus |
bb5ed363 DE |
18379 | ? &objfile->global_psymbols |
18380 | : &objfile->static_psymbols, | |
1762568f | 18381 | 0, cu->language, objfile); |
72bf9492 | 18382 | |
dee91e82 | 18383 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
18384 | continue; |
18385 | } | |
18386 | ||
18387 | /* We'll save this DIE so link it in. */ | |
18388 | part_die->die_parent = parent_die; | |
18389 | part_die->die_sibling = NULL; | |
18390 | part_die->die_child = NULL; | |
18391 | ||
18392 | if (last_die && last_die == parent_die) | |
18393 | last_die->die_child = part_die; | |
18394 | else if (last_die) | |
18395 | last_die->die_sibling = part_die; | |
18396 | ||
18397 | last_die = part_die; | |
18398 | ||
18399 | if (first_die == NULL) | |
18400 | first_die = part_die; | |
18401 | ||
18402 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18403 | find interesting need to be in the hash table, because we | |
18404 | also have the parent/sibling/child chains; only those that we | |
18405 | might refer to by offset later during partial symbol reading. | |
18406 | ||
18407 | For now this means things that might have be the target of a | |
18408 | DW_AT_specification, DW_AT_abstract_origin, or | |
18409 | DW_AT_extension. DW_AT_extension will refer only to | |
18410 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18411 | many things under the function DIE, but we do not recurse | |
18412 | into function DIEs during partial symbol reading) and | |
18413 | possibly variables as well; DW_AT_specification refers to | |
18414 | declarations. Declarations ought to have the DW_AT_declaration | |
18415 | flag. It happens that GCC forgets to put it in sometimes, but | |
18416 | only for functions, not for types. | |
18417 | ||
18418 | Adding more things than necessary to the hash table is harmless | |
18419 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18420 | wasted time in find_partial_die, when we reread the compilation |
18421 | unit with load_all_dies set. */ | |
72bf9492 | 18422 | |
5afb4e99 | 18423 | if (load_all |
72929c62 | 18424 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18425 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18426 | || abbrev->tag == DW_TAG_variable |
18427 | || abbrev->tag == DW_TAG_namespace | |
18428 | || part_die->is_declaration) | |
18429 | { | |
18430 | void **slot; | |
18431 | ||
18432 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18433 | to_underlying (part_die->sect_off), |
18434 | INSERT); | |
72bf9492 DJ |
18435 | *slot = part_die; |
18436 | } | |
18437 | ||
8d749320 | 18438 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
18439 | |
18440 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 18441 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18442 | languages we have to, so that we can get at method physnames |
18443 | to infer fully qualified class names, for DW_AT_specification, | |
18444 | and for C++ template arguments. For C++, we also look one level | |
18445 | inside functions to find template arguments (if the name of the | |
18446 | function does not already contain the template arguments). | |
bc30ff58 JB |
18447 | |
18448 | For Ada, we need to scan the children of subprograms and lexical | |
18449 | blocks as well because Ada allows the definition of nested | |
18450 | entities that could be interesting for the debugger, such as | |
18451 | nested subprograms for instance. */ | |
72bf9492 | 18452 | if (last_die->has_children |
5afb4e99 DJ |
18453 | && (load_all |
18454 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18455 | || last_die->tag == DW_TAG_module |
72bf9492 | 18456 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18457 | || (cu->language == language_cplus |
18458 | && last_die->tag == DW_TAG_subprogram | |
18459 | && (last_die->name == NULL | |
18460 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18461 | || (cu->language != language_c |
18462 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18463 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18464 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18465 | || last_die->tag == DW_TAG_union_type)) |
18466 | || (cu->language == language_ada | |
18467 | && (last_die->tag == DW_TAG_subprogram | |
18468 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18469 | { |
18470 | nesting_level++; | |
18471 | parent_die = last_die; | |
18472 | continue; | |
18473 | } | |
18474 | ||
18475 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18476 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18477 | |
18478 | /* Back to the top, do it again. */ | |
18479 | } | |
18480 | } | |
18481 | ||
c906108c SS |
18482 | /* Read a minimal amount of information into the minimal die structure. */ |
18483 | ||
d521ce57 | 18484 | static const gdb_byte * |
dee91e82 DE |
18485 | read_partial_die (const struct die_reader_specs *reader, |
18486 | struct partial_die_info *part_die, | |
18487 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 18488 | const gdb_byte *info_ptr) |
c906108c | 18489 | { |
dee91e82 | 18490 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18491 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18492 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18493 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
d521ce57 | 18494 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 18495 | unsigned int i; |
c906108c | 18496 | struct attribute attr; |
c5aa993b | 18497 | int has_low_pc_attr = 0; |
c906108c | 18498 | int has_high_pc_attr = 0; |
91da1414 | 18499 | int high_pc_relative = 0; |
c906108c | 18500 | |
72bf9492 | 18501 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 18502 | |
9c541725 | 18503 | part_die->sect_off = (sect_offset) (info_ptr - buffer); |
72bf9492 DJ |
18504 | |
18505 | info_ptr += abbrev_len; | |
18506 | ||
18507 | if (abbrev == NULL) | |
18508 | return info_ptr; | |
18509 | ||
c906108c SS |
18510 | part_die->tag = abbrev->tag; |
18511 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
18512 | |
18513 | for (i = 0; i < abbrev->num_attrs; ++i) | |
18514 | { | |
dee91e82 | 18515 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
18516 | |
18517 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18518 | partial symbol table. */ |
c906108c SS |
18519 | switch (attr.name) |
18520 | { | |
18521 | case DW_AT_name: | |
71c25dea TT |
18522 | switch (part_die->tag) |
18523 | { | |
18524 | case DW_TAG_compile_unit: | |
95554aad | 18525 | case DW_TAG_partial_unit: |
348e048f | 18526 | case DW_TAG_type_unit: |
71c25dea TT |
18527 | /* Compilation units have a DW_AT_name that is a filename, not |
18528 | a source language identifier. */ | |
18529 | case DW_TAG_enumeration_type: | |
18530 | case DW_TAG_enumerator: | |
18531 | /* These tags always have simple identifiers already; no need | |
18532 | to canonicalize them. */ | |
18533 | part_die->name = DW_STRING (&attr); | |
18534 | break; | |
18535 | default: | |
18536 | part_die->name | |
18537 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 18538 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
18539 | break; |
18540 | } | |
c906108c | 18541 | break; |
31ef98ae | 18542 | case DW_AT_linkage_name: |
c906108c | 18543 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18544 | /* Note that both forms of linkage name might appear. We |
18545 | assume they will be the same, and we only store the last | |
18546 | one we see. */ | |
94af9270 KS |
18547 | if (cu->language == language_ada) |
18548 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 18549 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
18550 | break; |
18551 | case DW_AT_low_pc: | |
18552 | has_low_pc_attr = 1; | |
31aa7e4e | 18553 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
18554 | break; |
18555 | case DW_AT_high_pc: | |
18556 | has_high_pc_attr = 1; | |
31aa7e4e JB |
18557 | part_die->highpc = attr_value_as_address (&attr); |
18558 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
18559 | high_pc_relative = 1; | |
c906108c SS |
18560 | break; |
18561 | case DW_AT_location: | |
0963b4bd | 18562 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18563 | if (attr_form_is_block (&attr)) |
18564 | { | |
95554aad | 18565 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18566 | } |
3690dd37 | 18567 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18568 | { |
4d3c2250 | 18569 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18570 | } |
18571 | else | |
18572 | { | |
4d3c2250 KB |
18573 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18574 | "partial symbol information"); | |
8e19ed76 | 18575 | } |
c906108c | 18576 | break; |
c906108c SS |
18577 | case DW_AT_external: |
18578 | part_die->is_external = DW_UNSND (&attr); | |
18579 | break; | |
18580 | case DW_AT_declaration: | |
18581 | part_die->is_declaration = DW_UNSND (&attr); | |
18582 | break; | |
18583 | case DW_AT_type: | |
18584 | part_die->has_type = 1; | |
18585 | break; | |
18586 | case DW_AT_abstract_origin: | |
18587 | case DW_AT_specification: | |
72bf9492 DJ |
18588 | case DW_AT_extension: |
18589 | part_die->has_specification = 1; | |
c764a876 | 18590 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
18591 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
18592 | || cu->per_cu->is_dwz); | |
c906108c SS |
18593 | break; |
18594 | case DW_AT_sibling: | |
18595 | /* Ignore absolute siblings, they might point outside of | |
18596 | the current compile unit. */ | |
18597 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
18598 | complaint (&symfile_complaints, |
18599 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 18600 | else |
b9502d3f | 18601 | { |
9c541725 PA |
18602 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18603 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18604 | |
18605 | if (sibling_ptr < info_ptr) | |
18606 | complaint (&symfile_complaints, | |
18607 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
18608 | else if (sibling_ptr > reader->buffer_end) |
18609 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
18610 | else |
18611 | part_die->sibling = sibling_ptr; | |
18612 | } | |
c906108c | 18613 | break; |
fa4028e9 JB |
18614 | case DW_AT_byte_size: |
18615 | part_die->has_byte_size = 1; | |
18616 | break; | |
ff908ebf AW |
18617 | case DW_AT_const_value: |
18618 | part_die->has_const_value = 1; | |
18619 | break; | |
68511cec CES |
18620 | case DW_AT_calling_convention: |
18621 | /* DWARF doesn't provide a way to identify a program's source-level | |
18622 | entry point. DW_AT_calling_convention attributes are only meant | |
18623 | to describe functions' calling conventions. | |
18624 | ||
18625 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18626 | Fortran, and before DWARF 4 DW_CC_program was the only |
18627 | piece of debugging information whose definition refers to | |
18628 | a 'main program' at all, several compilers marked Fortran | |
18629 | main programs with DW_CC_program --- even when those | |
18630 | functions use the standard calling conventions. | |
18631 | ||
18632 | Although DWARF now specifies a way to provide this | |
18633 | information, we support this practice for backward | |
18634 | compatibility. */ | |
68511cec | 18635 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e TT |
18636 | && cu->language == language_fortran) |
18637 | part_die->main_subprogram = 1; | |
68511cec | 18638 | break; |
481860b3 GB |
18639 | case DW_AT_inline: |
18640 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18641 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
18642 | part_die->may_be_inlined = 1; | |
18643 | break; | |
95554aad TT |
18644 | |
18645 | case DW_AT_import: | |
18646 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 | 18647 | { |
9c541725 | 18648 | part_die->d.sect_off = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
18649 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
18650 | || cu->per_cu->is_dwz); | |
18651 | } | |
95554aad TT |
18652 | break; |
18653 | ||
0c1b455e TT |
18654 | case DW_AT_main_subprogram: |
18655 | part_die->main_subprogram = DW_UNSND (&attr); | |
18656 | break; | |
18657 | ||
c906108c SS |
18658 | default: |
18659 | break; | |
18660 | } | |
18661 | } | |
18662 | ||
91da1414 MW |
18663 | if (high_pc_relative) |
18664 | part_die->highpc += part_die->lowpc; | |
18665 | ||
9373cf26 JK |
18666 | if (has_low_pc_attr && has_high_pc_attr) |
18667 | { | |
18668 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18669 | eliminate duplicate copies of functions and vtables and such. | |
18670 | The linker will arbitrarily choose one and discard the others. | |
18671 | The AT_*_pc values for such functions refer to local labels in | |
18672 | these sections. If the section from that file was discarded, the | |
18673 | labels are not in the output, so the relocs get a value of 0. | |
18674 | If this is a discarded function, mark the pc bounds as invalid, | |
18675 | so that GDB will ignore it. */ | |
18676 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
18677 | { | |
bb5ed363 | 18678 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
18679 | |
18680 | complaint (&symfile_complaints, | |
18681 | _("DW_AT_low_pc %s is zero " | |
18682 | "for DIE at 0x%x [in module %s]"), | |
18683 | paddress (gdbarch, part_die->lowpc), | |
9c541725 | 18684 | to_underlying (part_die->sect_off), objfile_name (objfile)); |
9373cf26 JK |
18685 | } |
18686 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
18687 | else if (part_die->lowpc >= part_die->highpc) | |
18688 | { | |
bb5ed363 | 18689 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
18690 | |
18691 | complaint (&symfile_complaints, | |
18692 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
18693 | "for DIE at 0x%x [in module %s]"), | |
18694 | paddress (gdbarch, part_die->lowpc), | |
18695 | paddress (gdbarch, part_die->highpc), | |
9c541725 PA |
18696 | to_underlying (part_die->sect_off), |
18697 | objfile_name (objfile)); | |
9373cf26 JK |
18698 | } |
18699 | else | |
18700 | part_die->has_pc_info = 1; | |
18701 | } | |
85cbf3d3 | 18702 | |
c906108c SS |
18703 | return info_ptr; |
18704 | } | |
18705 | ||
72bf9492 DJ |
18706 | /* Find a cached partial DIE at OFFSET in CU. */ |
18707 | ||
18708 | static struct partial_die_info * | |
9c541725 | 18709 | find_partial_die_in_comp_unit (sect_offset sect_off, struct dwarf2_cu *cu) |
72bf9492 DJ |
18710 | { |
18711 | struct partial_die_info *lookup_die = NULL; | |
18712 | struct partial_die_info part_die; | |
18713 | ||
9c541725 | 18714 | part_die.sect_off = sect_off; |
9a3c8263 SM |
18715 | lookup_die = ((struct partial_die_info *) |
18716 | htab_find_with_hash (cu->partial_dies, &part_die, | |
9c541725 | 18717 | to_underlying (sect_off))); |
72bf9492 | 18718 | |
72bf9492 DJ |
18719 | return lookup_die; |
18720 | } | |
18721 | ||
348e048f DE |
18722 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18723 | except in the case of .debug_types DIEs which do not reference | |
18724 | outside their CU (they do however referencing other types via | |
55f1336d | 18725 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18726 | |
18727 | static struct partial_die_info * | |
9c541725 | 18728 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18729 | { |
518817b3 SM |
18730 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18731 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18732 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18733 | struct dwarf2_per_cu_data *per_cu = NULL; |
18734 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18735 | |
36586728 | 18736 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18737 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18738 | { |
9c541725 | 18739 | pd = find_partial_die_in_comp_unit (sect_off, cu); |
5afb4e99 DJ |
18740 | if (pd != NULL) |
18741 | return pd; | |
0d99eb77 DE |
18742 | /* We missed recording what we needed. |
18743 | Load all dies and try again. */ | |
18744 | per_cu = cu->per_cu; | |
5afb4e99 | 18745 | } |
0d99eb77 DE |
18746 | else |
18747 | { | |
18748 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18749 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18750 | { |
9c541725 PA |
18751 | error (_("Dwarf Error: Type Unit at offset 0x%x contains" |
18752 | " external reference to offset 0x%x [in module %s].\n"), | |
18753 | to_underlying (cu->header.sect_off), to_underlying (sect_off), | |
0d99eb77 DE |
18754 | bfd_get_filename (objfile->obfd)); |
18755 | } | |
9c541725 | 18756 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18757 | dwarf2_per_objfile); |
72bf9492 | 18758 | |
0d99eb77 DE |
18759 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18760 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18761 | |
0d99eb77 | 18762 | per_cu->cu->last_used = 0; |
9c541725 | 18763 | pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu); |
0d99eb77 | 18764 | } |
5afb4e99 | 18765 | |
dee91e82 DE |
18766 | /* If we didn't find it, and not all dies have been loaded, |
18767 | load them all and try again. */ | |
18768 | ||
5afb4e99 DJ |
18769 | if (pd == NULL && per_cu->load_all_dies == 0) |
18770 | { | |
5afb4e99 | 18771 | per_cu->load_all_dies = 1; |
fd820528 DE |
18772 | |
18773 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18774 | THIS_CU->cu may already be in use. So we can't just free it and | |
18775 | replace its DIEs with the ones we read in. Instead, we leave those | |
18776 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18777 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18778 | set. */ | |
dee91e82 | 18779 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18780 | |
9c541725 | 18781 | pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu); |
5afb4e99 DJ |
18782 | } |
18783 | ||
18784 | if (pd == NULL) | |
18785 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
18786 | _("could not find partial DIE 0x%x " |
18787 | "in cache [from module %s]\n"), | |
9c541725 | 18788 | to_underlying (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18789 | return pd; |
72bf9492 DJ |
18790 | } |
18791 | ||
abc72ce4 DE |
18792 | /* See if we can figure out if the class lives in a namespace. We do |
18793 | this by looking for a member function; its demangled name will | |
18794 | contain namespace info, if there is any. */ | |
18795 | ||
18796 | static void | |
18797 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18798 | struct dwarf2_cu *cu) | |
18799 | { | |
18800 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18801 | what template types look like, because the demangler | |
18802 | frequently doesn't give the same name as the debug info. We | |
18803 | could fix this by only using the demangled name to get the | |
18804 | prefix (but see comment in read_structure_type). */ | |
18805 | ||
18806 | struct partial_die_info *real_pdi; | |
18807 | struct partial_die_info *child_pdi; | |
18808 | ||
18809 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18810 | we should not do this. We'll prepend the parent's fully qualified | |
18811 | name when we create the partial symbol. */ | |
18812 | ||
18813 | real_pdi = struct_pdi; | |
18814 | while (real_pdi->has_specification) | |
36586728 TT |
18815 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18816 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18817 | |
18818 | if (real_pdi->die_parent != NULL) | |
18819 | return; | |
18820 | ||
18821 | for (child_pdi = struct_pdi->die_child; | |
18822 | child_pdi != NULL; | |
18823 | child_pdi = child_pdi->die_sibling) | |
18824 | { | |
18825 | if (child_pdi->tag == DW_TAG_subprogram | |
18826 | && child_pdi->linkage_name != NULL) | |
18827 | { | |
18828 | char *actual_class_name | |
18829 | = language_class_name_from_physname (cu->language_defn, | |
18830 | child_pdi->linkage_name); | |
18831 | if (actual_class_name != NULL) | |
18832 | { | |
518817b3 | 18833 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18834 | struct_pdi->name |
224c3ddb | 18835 | = ((const char *) |
e3b94546 | 18836 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
18837 | actual_class_name, |
18838 | strlen (actual_class_name))); | |
abc72ce4 DE |
18839 | xfree (actual_class_name); |
18840 | } | |
18841 | break; | |
18842 | } | |
18843 | } | |
18844 | } | |
18845 | ||
72bf9492 DJ |
18846 | /* Adjust PART_DIE before generating a symbol for it. This function |
18847 | may set the is_external flag or change the DIE's name. */ | |
18848 | ||
18849 | static void | |
18850 | fixup_partial_die (struct partial_die_info *part_die, | |
18851 | struct dwarf2_cu *cu) | |
18852 | { | |
abc72ce4 DE |
18853 | /* Once we've fixed up a die, there's no point in doing so again. |
18854 | This also avoids a memory leak if we were to call | |
18855 | guess_partial_die_structure_name multiple times. */ | |
18856 | if (part_die->fixup_called) | |
18857 | return; | |
18858 | ||
72bf9492 DJ |
18859 | /* If we found a reference attribute and the DIE has no name, try |
18860 | to find a name in the referred to DIE. */ | |
18861 | ||
18862 | if (part_die->name == NULL && part_die->has_specification) | |
18863 | { | |
18864 | struct partial_die_info *spec_die; | |
72bf9492 | 18865 | |
36586728 TT |
18866 | spec_die = find_partial_die (part_die->spec_offset, |
18867 | part_die->spec_is_dwz, cu); | |
72bf9492 | 18868 | |
10b3939b | 18869 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
18870 | |
18871 | if (spec_die->name) | |
18872 | { | |
18873 | part_die->name = spec_die->name; | |
18874 | ||
18875 | /* Copy DW_AT_external attribute if it is set. */ | |
18876 | if (spec_die->is_external) | |
18877 | part_die->is_external = spec_die->is_external; | |
18878 | } | |
18879 | } | |
18880 | ||
18881 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
18882 | |
18883 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 18884 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 18885 | |
abc72ce4 DE |
18886 | /* If there is no parent die to provide a namespace, and there are |
18887 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18888 | name. */ |
abc72ce4 | 18889 | if (cu->language == language_cplus |
518817b3 SM |
18890 | && !VEC_empty (dwarf2_section_info_def, |
18891 | cu->per_cu->dwarf2_per_objfile->types) | |
abc72ce4 DE |
18892 | && part_die->die_parent == NULL |
18893 | && part_die->has_children | |
18894 | && (part_die->tag == DW_TAG_class_type | |
18895 | || part_die->tag == DW_TAG_structure_type | |
18896 | || part_die->tag == DW_TAG_union_type)) | |
18897 | guess_partial_die_structure_name (part_die, cu); | |
18898 | ||
53832f31 TT |
18899 | /* GCC might emit a nameless struct or union that has a linkage |
18900 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18901 | if (part_die->name == NULL | |
96408a79 SA |
18902 | && (part_die->tag == DW_TAG_class_type |
18903 | || part_die->tag == DW_TAG_interface_type | |
18904 | || part_die->tag == DW_TAG_structure_type | |
18905 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
18906 | && part_die->linkage_name != NULL) |
18907 | { | |
18908 | char *demangled; | |
18909 | ||
8de20a37 | 18910 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
18911 | if (demangled) |
18912 | { | |
96408a79 SA |
18913 | const char *base; |
18914 | ||
18915 | /* Strip any leading namespaces/classes, keep only the base name. | |
18916 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18917 | base = strrchr (demangled, ':'); | |
18918 | if (base && base > demangled && base[-1] == ':') | |
18919 | base++; | |
18920 | else | |
18921 | base = demangled; | |
18922 | ||
518817b3 | 18923 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 18924 | part_die->name |
224c3ddb | 18925 | = ((const char *) |
e3b94546 | 18926 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 18927 | base, strlen (base))); |
53832f31 TT |
18928 | xfree (demangled); |
18929 | } | |
18930 | } | |
18931 | ||
abc72ce4 | 18932 | part_die->fixup_called = 1; |
72bf9492 DJ |
18933 | } |
18934 | ||
a8329558 | 18935 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18936 | |
d521ce57 | 18937 | static const gdb_byte * |
dee91e82 DE |
18938 | read_attribute_value (const struct die_reader_specs *reader, |
18939 | struct attribute *attr, unsigned form, | |
43988095 | 18940 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 18941 | { |
dee91e82 | 18942 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18943 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18944 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18945 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18946 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18947 | bfd *abfd = reader->abfd; |
e7c27a73 | 18948 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18949 | unsigned int bytes_read; |
18950 | struct dwarf_block *blk; | |
18951 | ||
aead7601 | 18952 | attr->form = (enum dwarf_form) form; |
a8329558 | 18953 | switch (form) |
c906108c | 18954 | { |
c906108c | 18955 | case DW_FORM_ref_addr: |
ae411497 | 18956 | if (cu->header.version == 2) |
4568ecf9 | 18957 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 18958 | else |
4568ecf9 DE |
18959 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
18960 | &cu->header, &bytes_read); | |
ae411497 TT |
18961 | info_ptr += bytes_read; |
18962 | break; | |
36586728 TT |
18963 | case DW_FORM_GNU_ref_alt: |
18964 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18965 | info_ptr += bytes_read; | |
18966 | break; | |
ae411497 | 18967 | case DW_FORM_addr: |
e7c27a73 | 18968 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 18969 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18970 | info_ptr += bytes_read; |
c906108c SS |
18971 | break; |
18972 | case DW_FORM_block2: | |
7b5a2f43 | 18973 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18974 | blk->size = read_2_bytes (abfd, info_ptr); |
18975 | info_ptr += 2; | |
18976 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18977 | info_ptr += blk->size; | |
18978 | DW_BLOCK (attr) = blk; | |
18979 | break; | |
18980 | case DW_FORM_block4: | |
7b5a2f43 | 18981 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18982 | blk->size = read_4_bytes (abfd, info_ptr); |
18983 | info_ptr += 4; | |
18984 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18985 | info_ptr += blk->size; | |
18986 | DW_BLOCK (attr) = blk; | |
18987 | break; | |
18988 | case DW_FORM_data2: | |
18989 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18990 | info_ptr += 2; | |
18991 | break; | |
18992 | case DW_FORM_data4: | |
18993 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18994 | info_ptr += 4; | |
18995 | break; | |
18996 | case DW_FORM_data8: | |
18997 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18998 | info_ptr += 8; | |
18999 | break; | |
0224619f JK |
19000 | case DW_FORM_data16: |
19001 | blk = dwarf_alloc_block (cu); | |
19002 | blk->size = 16; | |
19003 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19004 | info_ptr += 16; | |
19005 | DW_BLOCK (attr) = blk; | |
19006 | break; | |
2dc7f7b3 TT |
19007 | case DW_FORM_sec_offset: |
19008 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19009 | info_ptr += bytes_read; | |
19010 | break; | |
c906108c | 19011 | case DW_FORM_string: |
9b1c24c8 | 19012 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19013 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19014 | info_ptr += bytes_read; |
19015 | break; | |
4bdf3d34 | 19016 | case DW_FORM_strp: |
36586728 TT |
19017 | if (!cu->per_cu->is_dwz) |
19018 | { | |
ed2dc618 SM |
19019 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19020 | abfd, info_ptr, cu_header, | |
36586728 TT |
19021 | &bytes_read); |
19022 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19023 | info_ptr += bytes_read; | |
19024 | break; | |
19025 | } | |
19026 | /* FALLTHROUGH */ | |
43988095 JK |
19027 | case DW_FORM_line_strp: |
19028 | if (!cu->per_cu->is_dwz) | |
19029 | { | |
ed2dc618 SM |
19030 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19031 | abfd, info_ptr, | |
43988095 JK |
19032 | cu_header, &bytes_read); |
19033 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19034 | info_ptr += bytes_read; | |
19035 | break; | |
19036 | } | |
19037 | /* FALLTHROUGH */ | |
36586728 TT |
19038 | case DW_FORM_GNU_strp_alt: |
19039 | { | |
ed2dc618 | 19040 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19041 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19042 | &bytes_read); | |
19043 | ||
ed2dc618 SM |
19044 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19045 | dwz, str_offset); | |
36586728 TT |
19046 | DW_STRING_IS_CANONICAL (attr) = 0; |
19047 | info_ptr += bytes_read; | |
19048 | } | |
4bdf3d34 | 19049 | break; |
2dc7f7b3 | 19050 | case DW_FORM_exprloc: |
c906108c | 19051 | case DW_FORM_block: |
7b5a2f43 | 19052 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19053 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19054 | info_ptr += bytes_read; | |
19055 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19056 | info_ptr += blk->size; | |
19057 | DW_BLOCK (attr) = blk; | |
19058 | break; | |
19059 | case DW_FORM_block1: | |
7b5a2f43 | 19060 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19061 | blk->size = read_1_byte (abfd, info_ptr); |
19062 | info_ptr += 1; | |
19063 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19064 | info_ptr += blk->size; | |
19065 | DW_BLOCK (attr) = blk; | |
19066 | break; | |
19067 | case DW_FORM_data1: | |
19068 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19069 | info_ptr += 1; | |
19070 | break; | |
19071 | case DW_FORM_flag: | |
19072 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19073 | info_ptr += 1; | |
19074 | break; | |
2dc7f7b3 TT |
19075 | case DW_FORM_flag_present: |
19076 | DW_UNSND (attr) = 1; | |
19077 | break; | |
c906108c SS |
19078 | case DW_FORM_sdata: |
19079 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19080 | info_ptr += bytes_read; | |
19081 | break; | |
19082 | case DW_FORM_udata: | |
19083 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19084 | info_ptr += bytes_read; | |
19085 | break; | |
19086 | case DW_FORM_ref1: | |
9c541725 | 19087 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19088 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19089 | info_ptr += 1; |
19090 | break; | |
19091 | case DW_FORM_ref2: | |
9c541725 | 19092 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19093 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19094 | info_ptr += 2; |
19095 | break; | |
19096 | case DW_FORM_ref4: | |
9c541725 | 19097 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19098 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19099 | info_ptr += 4; |
19100 | break; | |
613e1657 | 19101 | case DW_FORM_ref8: |
9c541725 | 19102 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19103 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19104 | info_ptr += 8; |
19105 | break; | |
55f1336d | 19106 | case DW_FORM_ref_sig8: |
ac9ec31b | 19107 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19108 | info_ptr += 8; |
19109 | break; | |
c906108c | 19110 | case DW_FORM_ref_udata: |
9c541725 | 19111 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19112 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19113 | info_ptr += bytes_read; |
19114 | break; | |
c906108c | 19115 | case DW_FORM_indirect: |
a8329558 KW |
19116 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19117 | info_ptr += bytes_read; | |
43988095 JK |
19118 | if (form == DW_FORM_implicit_const) |
19119 | { | |
19120 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19121 | info_ptr += bytes_read; | |
19122 | } | |
19123 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19124 | info_ptr); | |
19125 | break; | |
19126 | case DW_FORM_implicit_const: | |
19127 | DW_SND (attr) = implicit_const; | |
a8329558 | 19128 | break; |
3019eac3 DE |
19129 | case DW_FORM_GNU_addr_index: |
19130 | if (reader->dwo_file == NULL) | |
19131 | { | |
19132 | /* For now flag a hard error. | |
19133 | Later we can turn this into a complaint. */ | |
19134 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19135 | dwarf_form_name (form), | |
19136 | bfd_get_filename (abfd)); | |
19137 | } | |
19138 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19139 | info_ptr += bytes_read; | |
19140 | break; | |
19141 | case DW_FORM_GNU_str_index: | |
19142 | if (reader->dwo_file == NULL) | |
19143 | { | |
19144 | /* For now flag a hard error. | |
19145 | Later we can turn this into a complaint if warranted. */ | |
19146 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19147 | dwarf_form_name (form), | |
19148 | bfd_get_filename (abfd)); | |
19149 | } | |
19150 | { | |
19151 | ULONGEST str_index = | |
19152 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19153 | ||
342587c4 | 19154 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19155 | DW_STRING_IS_CANONICAL (attr) = 0; |
19156 | info_ptr += bytes_read; | |
19157 | } | |
19158 | break; | |
c906108c | 19159 | default: |
8a3fe4f8 | 19160 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19161 | dwarf_form_name (form), |
19162 | bfd_get_filename (abfd)); | |
c906108c | 19163 | } |
28e94949 | 19164 | |
36586728 | 19165 | /* Super hack. */ |
7771576e | 19166 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19167 | attr->form = DW_FORM_GNU_ref_alt; |
19168 | ||
28e94949 JB |
19169 | /* We have seen instances where the compiler tried to emit a byte |
19170 | size attribute of -1 which ended up being encoded as an unsigned | |
19171 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19172 | an object of this size seems pretty unlikely so we can relatively | |
19173 | safely treat these cases as if the size attribute was invalid and | |
19174 | treat them as zero by default. */ | |
19175 | if (attr->name == DW_AT_byte_size | |
19176 | && form == DW_FORM_data4 | |
19177 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19178 | { |
19179 | complaint | |
19180 | (&symfile_complaints, | |
43bbcdc2 PH |
19181 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
19182 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
19183 | DW_UNSND (attr) = 0; |
19184 | } | |
28e94949 | 19185 | |
c906108c SS |
19186 | return info_ptr; |
19187 | } | |
19188 | ||
a8329558 KW |
19189 | /* Read an attribute described by an abbreviated attribute. */ |
19190 | ||
d521ce57 | 19191 | static const gdb_byte * |
dee91e82 DE |
19192 | read_attribute (const struct die_reader_specs *reader, |
19193 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19194 | const gdb_byte *info_ptr) |
a8329558 KW |
19195 | { |
19196 | attr->name = abbrev->name; | |
43988095 JK |
19197 | return read_attribute_value (reader, attr, abbrev->form, |
19198 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19199 | } |
19200 | ||
0963b4bd | 19201 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19202 | |
19203 | static unsigned int | |
a1855c1d | 19204 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19205 | { |
fe1b8b76 | 19206 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19207 | } |
19208 | ||
19209 | static int | |
a1855c1d | 19210 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19211 | { |
fe1b8b76 | 19212 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19213 | } |
19214 | ||
19215 | static unsigned int | |
a1855c1d | 19216 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19217 | { |
fe1b8b76 | 19218 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19219 | } |
19220 | ||
21ae7a4d | 19221 | static int |
a1855c1d | 19222 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19223 | { |
19224 | return bfd_get_signed_16 (abfd, buf); | |
19225 | } | |
19226 | ||
c906108c | 19227 | static unsigned int |
a1855c1d | 19228 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19229 | { |
fe1b8b76 | 19230 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19231 | } |
19232 | ||
21ae7a4d | 19233 | static int |
a1855c1d | 19234 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19235 | { |
19236 | return bfd_get_signed_32 (abfd, buf); | |
19237 | } | |
19238 | ||
93311388 | 19239 | static ULONGEST |
a1855c1d | 19240 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19241 | { |
fe1b8b76 | 19242 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19243 | } |
19244 | ||
19245 | static CORE_ADDR | |
d521ce57 | 19246 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19247 | unsigned int *bytes_read) |
c906108c | 19248 | { |
e7c27a73 | 19249 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19250 | CORE_ADDR retval = 0; |
19251 | ||
107d2387 | 19252 | if (cu_header->signed_addr_p) |
c906108c | 19253 | { |
107d2387 AC |
19254 | switch (cu_header->addr_size) |
19255 | { | |
19256 | case 2: | |
fe1b8b76 | 19257 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19258 | break; |
19259 | case 4: | |
fe1b8b76 | 19260 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19261 | break; |
19262 | case 8: | |
fe1b8b76 | 19263 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19264 | break; |
19265 | default: | |
8e65ff28 | 19266 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19267 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19268 | bfd_get_filename (abfd)); |
107d2387 AC |
19269 | } |
19270 | } | |
19271 | else | |
19272 | { | |
19273 | switch (cu_header->addr_size) | |
19274 | { | |
19275 | case 2: | |
fe1b8b76 | 19276 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19277 | break; |
19278 | case 4: | |
fe1b8b76 | 19279 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19280 | break; |
19281 | case 8: | |
fe1b8b76 | 19282 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19283 | break; |
19284 | default: | |
8e65ff28 | 19285 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19286 | _("read_address: bad switch, " |
19287 | "unsigned [in module %s]"), | |
659b0389 | 19288 | bfd_get_filename (abfd)); |
107d2387 | 19289 | } |
c906108c | 19290 | } |
64367e0a | 19291 | |
107d2387 AC |
19292 | *bytes_read = cu_header->addr_size; |
19293 | return retval; | |
c906108c SS |
19294 | } |
19295 | ||
f7ef9339 | 19296 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19297 | specification allows the initial length to take up either 4 bytes |
19298 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19299 | bytes describe the length and all offsets will be 8 bytes in length | |
19300 | instead of 4. | |
19301 | ||
f7ef9339 KB |
19302 | An older, non-standard 64-bit format is also handled by this |
19303 | function. The older format in question stores the initial length | |
19304 | as an 8-byte quantity without an escape value. Lengths greater | |
19305 | than 2^32 aren't very common which means that the initial 4 bytes | |
19306 | is almost always zero. Since a length value of zero doesn't make | |
19307 | sense for the 32-bit format, this initial zero can be considered to | |
19308 | be an escape value which indicates the presence of the older 64-bit | |
19309 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19310 | greater than 4GB. If it becomes necessary to handle lengths |
19311 | somewhat larger than 4GB, we could allow other small values (such | |
19312 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19313 | escape values indicating the presence of the old format. | |
f7ef9339 | 19314 | |
917c78fc MK |
19315 | The value returned via bytes_read should be used to increment the |
19316 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19317 | |
613e1657 KB |
19318 | [ Note: read_initial_length() and read_offset() are based on the |
19319 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19320 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19321 | from: |
19322 | ||
f7ef9339 | 19323 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19324 | |
613e1657 KB |
19325 | This document is only a draft and is subject to change. (So beware.) |
19326 | ||
f7ef9339 | 19327 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19328 | determined empirically by examining 64-bit ELF files produced by |
19329 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19330 | |
19331 | - Kevin, July 16, 2002 | |
613e1657 KB |
19332 | ] */ |
19333 | ||
19334 | static LONGEST | |
d521ce57 | 19335 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19336 | { |
fe1b8b76 | 19337 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19338 | |
dd373385 | 19339 | if (length == 0xffffffff) |
613e1657 | 19340 | { |
fe1b8b76 | 19341 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19342 | *bytes_read = 12; |
613e1657 | 19343 | } |
dd373385 | 19344 | else if (length == 0) |
f7ef9339 | 19345 | { |
dd373385 | 19346 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19347 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19348 | *bytes_read = 8; |
f7ef9339 | 19349 | } |
613e1657 KB |
19350 | else |
19351 | { | |
19352 | *bytes_read = 4; | |
613e1657 KB |
19353 | } |
19354 | ||
c764a876 DE |
19355 | return length; |
19356 | } | |
dd373385 | 19357 | |
c764a876 DE |
19358 | /* Cover function for read_initial_length. |
19359 | Returns the length of the object at BUF, and stores the size of the | |
19360 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19361 | *OFFSET_SIZE. | |
19362 | If the initial length size is not equivalent to that specified in | |
19363 | CU_HEADER then issue a complaint. | |
19364 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19365 | |
c764a876 | 19366 | static LONGEST |
d521ce57 | 19367 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19368 | const struct comp_unit_head *cu_header, |
19369 | unsigned int *bytes_read, | |
19370 | unsigned int *offset_size) | |
19371 | { | |
19372 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19373 | ||
19374 | gdb_assert (cu_header->initial_length_size == 4 | |
19375 | || cu_header->initial_length_size == 8 | |
19376 | || cu_header->initial_length_size == 12); | |
19377 | ||
19378 | if (cu_header->initial_length_size != *bytes_read) | |
19379 | complaint (&symfile_complaints, | |
19380 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 19381 | |
c764a876 | 19382 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19383 | return length; |
613e1657 KB |
19384 | } |
19385 | ||
19386 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19387 | given by cu_header->offset_size. */ |
613e1657 KB |
19388 | |
19389 | static LONGEST | |
d521ce57 TT |
19390 | read_offset (bfd *abfd, const gdb_byte *buf, |
19391 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19392 | unsigned int *bytes_read) |
c764a876 DE |
19393 | { |
19394 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19395 | |
c764a876 DE |
19396 | *bytes_read = cu_header->offset_size; |
19397 | return offset; | |
19398 | } | |
19399 | ||
19400 | /* Read an offset from the data stream. */ | |
19401 | ||
19402 | static LONGEST | |
d521ce57 | 19403 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19404 | { |
19405 | LONGEST retval = 0; | |
19406 | ||
c764a876 | 19407 | switch (offset_size) |
613e1657 KB |
19408 | { |
19409 | case 4: | |
fe1b8b76 | 19410 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19411 | break; |
19412 | case 8: | |
fe1b8b76 | 19413 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19414 | break; |
19415 | default: | |
8e65ff28 | 19416 | internal_error (__FILE__, __LINE__, |
c764a876 | 19417 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19418 | bfd_get_filename (abfd)); |
613e1657 KB |
19419 | } |
19420 | ||
917c78fc | 19421 | return retval; |
613e1657 KB |
19422 | } |
19423 | ||
d521ce57 TT |
19424 | static const gdb_byte * |
19425 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19426 | { |
19427 | /* If the size of a host char is 8 bits, we can return a pointer | |
19428 | to the buffer, otherwise we have to copy the data to a buffer | |
19429 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19430 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19431 | return buf; |
c906108c SS |
19432 | } |
19433 | ||
d521ce57 TT |
19434 | static const char * |
19435 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19436 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19437 | { |
19438 | /* If the size of a host char is 8 bits, we can return a pointer | |
19439 | to the string, otherwise we have to copy the string to a buffer | |
19440 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19441 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19442 | if (*buf == '\0') |
19443 | { | |
19444 | *bytes_read_ptr = 1; | |
19445 | return NULL; | |
19446 | } | |
d521ce57 TT |
19447 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19448 | return (const char *) buf; | |
4bdf3d34 JJ |
19449 | } |
19450 | ||
43988095 JK |
19451 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19452 | reporting strings FORM_NAME and SECT_NAME. */ | |
19453 | ||
d521ce57 | 19454 | static const char * |
ed2dc618 SM |
19455 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19456 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19457 | struct dwarf2_section_info *sect, |
19458 | const char *form_name, | |
19459 | const char *sect_name) | |
19460 | { | |
ed2dc618 | 19461 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19462 | if (sect->buffer == NULL) |
19463 | error (_("%s used without %s section [in module %s]"), | |
19464 | form_name, sect_name, bfd_get_filename (abfd)); | |
19465 | if (str_offset >= sect->size) | |
19466 | error (_("%s pointing outside of %s section [in module %s]"), | |
19467 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19468 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19469 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19470 | return NULL; |
43988095 JK |
19471 | return (const char *) (sect->buffer + str_offset); |
19472 | } | |
19473 | ||
19474 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19475 | ||
19476 | static const char * | |
ed2dc618 SM |
19477 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19478 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19479 | { |
ed2dc618 SM |
19480 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19481 | abfd, str_offset, | |
43988095 JK |
19482 | &dwarf2_per_objfile->str, |
19483 | "DW_FORM_strp", ".debug_str"); | |
19484 | } | |
19485 | ||
19486 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19487 | ||
19488 | static const char * | |
ed2dc618 SM |
19489 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19490 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19491 | { |
ed2dc618 SM |
19492 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19493 | abfd, str_offset, | |
43988095 JK |
19494 | &dwarf2_per_objfile->line_str, |
19495 | "DW_FORM_line_strp", | |
19496 | ".debug_line_str"); | |
c906108c SS |
19497 | } |
19498 | ||
36586728 TT |
19499 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19500 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19501 | the string consists of a single NUL byte, return NULL; otherwise | |
19502 | return a pointer to the string. */ | |
19503 | ||
d521ce57 | 19504 | static const char * |
ed2dc618 SM |
19505 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19506 | LONGEST str_offset) | |
36586728 | 19507 | { |
ed2dc618 | 19508 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19509 | |
19510 | if (dwz->str.buffer == NULL) | |
19511 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19512 | "section [in module %s]"), | |
19513 | bfd_get_filename (dwz->dwz_bfd)); | |
19514 | if (str_offset >= dwz->str.size) | |
19515 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19516 | ".debug_str section [in module %s]"), | |
19517 | bfd_get_filename (dwz->dwz_bfd)); | |
19518 | gdb_assert (HOST_CHAR_BIT == 8); | |
19519 | if (dwz->str.buffer[str_offset] == '\0') | |
19520 | return NULL; | |
d521ce57 | 19521 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19522 | } |
19523 | ||
43988095 JK |
19524 | /* Return pointer to string at .debug_str offset as read from BUF. |
19525 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19526 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19527 | ||
d521ce57 | 19528 | static const char * |
ed2dc618 SM |
19529 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19530 | const gdb_byte *buf, | |
cf2c3c16 TT |
19531 | const struct comp_unit_head *cu_header, |
19532 | unsigned int *bytes_read_ptr) | |
19533 | { | |
19534 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19535 | ||
ed2dc618 | 19536 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19537 | } |
19538 | ||
43988095 JK |
19539 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19540 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19541 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19542 | ||
19543 | static const char * | |
ed2dc618 SM |
19544 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19545 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19546 | const struct comp_unit_head *cu_header, |
19547 | unsigned int *bytes_read_ptr) | |
19548 | { | |
19549 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19550 | ||
ed2dc618 SM |
19551 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19552 | str_offset); | |
43988095 JK |
19553 | } |
19554 | ||
19555 | ULONGEST | |
d521ce57 | 19556 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19557 | unsigned int *bytes_read_ptr) |
c906108c | 19558 | { |
12df843f | 19559 | ULONGEST result; |
ce5d95e1 | 19560 | unsigned int num_read; |
870f88f7 | 19561 | int shift; |
c906108c SS |
19562 | unsigned char byte; |
19563 | ||
19564 | result = 0; | |
19565 | shift = 0; | |
19566 | num_read = 0; | |
c906108c SS |
19567 | while (1) |
19568 | { | |
fe1b8b76 | 19569 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19570 | buf++; |
19571 | num_read++; | |
12df843f | 19572 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19573 | if ((byte & 128) == 0) |
19574 | { | |
19575 | break; | |
19576 | } | |
19577 | shift += 7; | |
19578 | } | |
19579 | *bytes_read_ptr = num_read; | |
19580 | return result; | |
19581 | } | |
19582 | ||
12df843f | 19583 | static LONGEST |
d521ce57 TT |
19584 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19585 | unsigned int *bytes_read_ptr) | |
c906108c | 19586 | { |
12df843f | 19587 | LONGEST result; |
870f88f7 | 19588 | int shift, num_read; |
c906108c SS |
19589 | unsigned char byte; |
19590 | ||
19591 | result = 0; | |
19592 | shift = 0; | |
c906108c | 19593 | num_read = 0; |
c906108c SS |
19594 | while (1) |
19595 | { | |
fe1b8b76 | 19596 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19597 | buf++; |
19598 | num_read++; | |
12df843f | 19599 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19600 | shift += 7; |
19601 | if ((byte & 128) == 0) | |
19602 | { | |
19603 | break; | |
19604 | } | |
19605 | } | |
77e0b926 | 19606 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19607 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19608 | *bytes_read_ptr = num_read; |
19609 | return result; | |
19610 | } | |
19611 | ||
3019eac3 DE |
19612 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19613 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19614 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19615 | ||
19616 | static CORE_ADDR | |
ed2dc618 SM |
19617 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19618 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19619 | { |
19620 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19621 | bfd *abfd = objfile->obfd; | |
19622 | const gdb_byte *info_ptr; | |
19623 | ||
19624 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19625 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19626 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19627 | objfile_name (objfile)); |
3019eac3 DE |
19628 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19629 | error (_("DW_FORM_addr_index pointing outside of " | |
19630 | ".debug_addr section [in module %s]"), | |
4262abfb | 19631 | objfile_name (objfile)); |
3019eac3 DE |
19632 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19633 | + addr_base + addr_index * addr_size); | |
19634 | if (addr_size == 4) | |
19635 | return bfd_get_32 (abfd, info_ptr); | |
19636 | else | |
19637 | return bfd_get_64 (abfd, info_ptr); | |
19638 | } | |
19639 | ||
19640 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19641 | ||
19642 | static CORE_ADDR | |
19643 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19644 | { | |
518817b3 SM |
19645 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19646 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19647 | } |
19648 | ||
19649 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19650 | ||
19651 | static CORE_ADDR | |
d521ce57 | 19652 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19653 | unsigned int *bytes_read) |
19654 | { | |
518817b3 | 19655 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19656 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19657 | ||
19658 | return read_addr_index (cu, addr_index); | |
19659 | } | |
19660 | ||
19661 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19662 | back to dwarf2_read_addr_index. */ | |
19663 | ||
19664 | struct dwarf2_read_addr_index_data | |
19665 | { | |
19666 | ULONGEST addr_base; | |
19667 | int addr_size; | |
19668 | }; | |
19669 | ||
19670 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19671 | ||
19672 | static void | |
19673 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19674 | const gdb_byte *info_ptr, |
3019eac3 DE |
19675 | struct die_info *comp_unit_die, |
19676 | int has_children, | |
19677 | void *data) | |
19678 | { | |
19679 | struct dwarf2_cu *cu = reader->cu; | |
19680 | struct dwarf2_read_addr_index_data *aidata = | |
19681 | (struct dwarf2_read_addr_index_data *) data; | |
19682 | ||
19683 | aidata->addr_base = cu->addr_base; | |
19684 | aidata->addr_size = cu->header.addr_size; | |
19685 | } | |
19686 | ||
19687 | /* Given an index in .debug_addr, fetch the value. | |
19688 | NOTE: This can be called during dwarf expression evaluation, | |
19689 | long after the debug information has been read, and thus per_cu->cu | |
19690 | may no longer exist. */ | |
19691 | ||
19692 | CORE_ADDR | |
19693 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19694 | unsigned int addr_index) | |
19695 | { | |
ed2dc618 SM |
19696 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
19697 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
19698 | struct dwarf2_cu *cu = per_cu->cu; |
19699 | ULONGEST addr_base; | |
19700 | int addr_size; | |
19701 | ||
3019eac3 DE |
19702 | /* We need addr_base and addr_size. |
19703 | If we don't have PER_CU->cu, we have to get it. | |
19704 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19705 | which at this point doesn't seem justified: it's not clear how frequently | |
19706 | it would get used and it would increase the size of every PER_CU. | |
19707 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19708 | so we're not in uncharted territory here. | |
19709 | Alas we need to be a bit more complicated as addr_base is contained | |
19710 | in the DIE. | |
19711 | ||
19712 | We don't need to read the entire CU(/TU). | |
19713 | We just need the header and top level die. | |
a1b64ce1 | 19714 | |
3019eac3 | 19715 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19716 | For now we skip this optimization. */ |
3019eac3 DE |
19717 | |
19718 | if (cu != NULL) | |
19719 | { | |
19720 | addr_base = cu->addr_base; | |
19721 | addr_size = cu->header.addr_size; | |
19722 | } | |
19723 | else | |
19724 | { | |
19725 | struct dwarf2_read_addr_index_data aidata; | |
19726 | ||
a1b64ce1 DE |
19727 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19728 | we need addr_base. */ | |
19729 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
19730 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
19731 | addr_base = aidata.addr_base; |
19732 | addr_size = aidata.addr_size; | |
19733 | } | |
19734 | ||
ed2dc618 SM |
19735 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19736 | addr_size); | |
3019eac3 DE |
19737 | } |
19738 | ||
57d63ce2 DE |
19739 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19740 | This is only used by the Fission support. */ | |
3019eac3 | 19741 | |
d521ce57 | 19742 | static const char * |
342587c4 | 19743 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19744 | { |
ed2dc618 | 19745 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19746 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19747 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19748 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19749 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19750 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19751 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19752 | struct dwarf2_section_info *str_offsets_section = | |
19753 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19754 | const gdb_byte *info_ptr; |
3019eac3 | 19755 | ULONGEST str_offset; |
57d63ce2 | 19756 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19757 | |
73869dc2 DE |
19758 | dwarf2_read_section (objfile, str_section); |
19759 | dwarf2_read_section (objfile, str_offsets_section); | |
19760 | if (str_section->buffer == NULL) | |
57d63ce2 | 19761 | error (_("%s used without .debug_str.dwo section" |
9c541725 PA |
19762 | " in CU at offset 0x%x [in module %s]"), |
19763 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19764 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19765 | error (_("%s used without .debug_str_offsets.dwo section" |
9c541725 PA |
19766 | " in CU at offset 0x%x [in module %s]"), |
19767 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19768 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19769 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9c541725 PA |
19770 | " section in CU at offset 0x%x [in module %s]"), |
19771 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19772 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19773 | + str_index * cu->header.offset_size); |
19774 | if (cu->header.offset_size == 4) | |
19775 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19776 | else | |
19777 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19778 | if (str_offset >= str_section->size) |
57d63ce2 | 19779 | error (_("Offset from %s pointing outside of" |
9c541725 PA |
19780 | " .debug_str.dwo section in CU at offset 0x%x [in module %s]"), |
19781 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19782 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19783 | } |
19784 | ||
3019eac3 DE |
19785 | /* Return the length of an LEB128 number in BUF. */ |
19786 | ||
19787 | static int | |
19788 | leb128_size (const gdb_byte *buf) | |
19789 | { | |
19790 | const gdb_byte *begin = buf; | |
19791 | gdb_byte byte; | |
19792 | ||
19793 | while (1) | |
19794 | { | |
19795 | byte = *buf++; | |
19796 | if ((byte & 128) == 0) | |
19797 | return buf - begin; | |
19798 | } | |
19799 | } | |
19800 | ||
c906108c | 19801 | static void |
e142c38c | 19802 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19803 | { |
19804 | switch (lang) | |
19805 | { | |
19806 | case DW_LANG_C89: | |
76bee0cc | 19807 | case DW_LANG_C99: |
0cfd832f | 19808 | case DW_LANG_C11: |
c906108c | 19809 | case DW_LANG_C: |
d1be3247 | 19810 | case DW_LANG_UPC: |
e142c38c | 19811 | cu->language = language_c; |
c906108c | 19812 | break; |
9c37b5ae | 19813 | case DW_LANG_Java: |
c906108c | 19814 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19815 | case DW_LANG_C_plus_plus_11: |
19816 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19817 | cu->language = language_cplus; |
c906108c | 19818 | break; |
6aecb9c2 JB |
19819 | case DW_LANG_D: |
19820 | cu->language = language_d; | |
19821 | break; | |
c906108c SS |
19822 | case DW_LANG_Fortran77: |
19823 | case DW_LANG_Fortran90: | |
b21b22e0 | 19824 | case DW_LANG_Fortran95: |
f7de9aab MW |
19825 | case DW_LANG_Fortran03: |
19826 | case DW_LANG_Fortran08: | |
e142c38c | 19827 | cu->language = language_fortran; |
c906108c | 19828 | break; |
a766d390 DE |
19829 | case DW_LANG_Go: |
19830 | cu->language = language_go; | |
19831 | break; | |
c906108c | 19832 | case DW_LANG_Mips_Assembler: |
e142c38c | 19833 | cu->language = language_asm; |
c906108c SS |
19834 | break; |
19835 | case DW_LANG_Ada83: | |
8aaf0b47 | 19836 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19837 | cu->language = language_ada; |
19838 | break; | |
72019c9c GM |
19839 | case DW_LANG_Modula2: |
19840 | cu->language = language_m2; | |
19841 | break; | |
fe8e67fd PM |
19842 | case DW_LANG_Pascal83: |
19843 | cu->language = language_pascal; | |
19844 | break; | |
22566fbd DJ |
19845 | case DW_LANG_ObjC: |
19846 | cu->language = language_objc; | |
19847 | break; | |
c44af4eb TT |
19848 | case DW_LANG_Rust: |
19849 | case DW_LANG_Rust_old: | |
19850 | cu->language = language_rust; | |
19851 | break; | |
c906108c SS |
19852 | case DW_LANG_Cobol74: |
19853 | case DW_LANG_Cobol85: | |
c906108c | 19854 | default: |
e142c38c | 19855 | cu->language = language_minimal; |
c906108c SS |
19856 | break; |
19857 | } | |
e142c38c | 19858 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19859 | } |
19860 | ||
19861 | /* Return the named attribute or NULL if not there. */ | |
19862 | ||
19863 | static struct attribute * | |
e142c38c | 19864 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19865 | { |
a48e046c | 19866 | for (;;) |
c906108c | 19867 | { |
a48e046c TT |
19868 | unsigned int i; |
19869 | struct attribute *spec = NULL; | |
19870 | ||
19871 | for (i = 0; i < die->num_attrs; ++i) | |
19872 | { | |
19873 | if (die->attrs[i].name == name) | |
19874 | return &die->attrs[i]; | |
19875 | if (die->attrs[i].name == DW_AT_specification | |
19876 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19877 | spec = &die->attrs[i]; | |
19878 | } | |
19879 | ||
19880 | if (!spec) | |
19881 | break; | |
c906108c | 19882 | |
f2f0e013 | 19883 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19884 | } |
c5aa993b | 19885 | |
c906108c SS |
19886 | return NULL; |
19887 | } | |
19888 | ||
348e048f DE |
19889 | /* Return the named attribute or NULL if not there, |
19890 | but do not follow DW_AT_specification, etc. | |
19891 | This is for use in contexts where we're reading .debug_types dies. | |
19892 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19893 | back up the chain, and we want to go down. */ | |
19894 | ||
19895 | static struct attribute * | |
45e58e77 | 19896 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19897 | { |
19898 | unsigned int i; | |
19899 | ||
19900 | for (i = 0; i < die->num_attrs; ++i) | |
19901 | if (die->attrs[i].name == name) | |
19902 | return &die->attrs[i]; | |
19903 | ||
19904 | return NULL; | |
19905 | } | |
19906 | ||
7d45c7c3 KB |
19907 | /* Return the string associated with a string-typed attribute, or NULL if it |
19908 | is either not found or is of an incorrect type. */ | |
19909 | ||
19910 | static const char * | |
19911 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19912 | { | |
19913 | struct attribute *attr; | |
19914 | const char *str = NULL; | |
19915 | ||
19916 | attr = dwarf2_attr (die, name, cu); | |
19917 | ||
19918 | if (attr != NULL) | |
19919 | { | |
43988095 | 19920 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
19921 | || attr->form == DW_FORM_string |
19922 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 19923 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19924 | str = DW_STRING (attr); |
19925 | else | |
19926 | complaint (&symfile_complaints, | |
19927 | _("string type expected for attribute %s for " | |
19928 | "DIE at 0x%x in module %s"), | |
9c541725 | 19929 | dwarf_attr_name (name), to_underlying (die->sect_off), |
518817b3 | 19930 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19931 | } |
19932 | ||
19933 | return str; | |
19934 | } | |
19935 | ||
05cf31d1 JB |
19936 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19937 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19938 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19939 | |
19940 | static int | |
19941 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19942 | { | |
19943 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19944 | ||
19945 | return (attr && DW_UNSND (attr)); | |
19946 | } | |
19947 | ||
3ca72b44 | 19948 | static int |
e142c38c | 19949 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19950 | { |
05cf31d1 JB |
19951 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19952 | which value is non-zero. However, we have to be careful with | |
19953 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19954 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19955 | end up accidently finding a declaration attribute that belongs | |
19956 | to a different DIE referenced by the specification attribute, | |
19957 | even though the given DIE does not have a declaration attribute. */ | |
19958 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19959 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19960 | } |
19961 | ||
63d06c5c | 19962 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19963 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19964 | containing the return value on output. If there is no |
19965 | specification, but there is an abstract origin, that is | |
19966 | returned. */ | |
63d06c5c DC |
19967 | |
19968 | static struct die_info * | |
f2f0e013 | 19969 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19970 | { |
f2f0e013 DJ |
19971 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19972 | *spec_cu); | |
63d06c5c | 19973 | |
edb3359d DJ |
19974 | if (spec_attr == NULL) |
19975 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19976 | ||
63d06c5c DC |
19977 | if (spec_attr == NULL) |
19978 | return NULL; | |
19979 | else | |
f2f0e013 | 19980 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19981 | } |
c906108c | 19982 | |
527f3840 JK |
19983 | /* Stub for free_line_header to match void * callback types. */ |
19984 | ||
19985 | static void | |
19986 | free_line_header_voidp (void *arg) | |
19987 | { | |
9a3c8263 | 19988 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19989 | |
fff8551c | 19990 | delete lh; |
527f3840 JK |
19991 | } |
19992 | ||
fff8551c PA |
19993 | void |
19994 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 19995 | { |
27e0867f | 19996 | if (dwarf_line_debug >= 2) |
fff8551c PA |
19997 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
19998 | include_dirs.size () + 1, include_dir); | |
27e0867f | 19999 | |
fff8551c | 20000 | include_dirs.push_back (include_dir); |
debd256d | 20001 | } |
6e70227d | 20002 | |
fff8551c PA |
20003 | void |
20004 | line_header::add_file_name (const char *name, | |
ecfb656c | 20005 | dir_index d_index, |
fff8551c PA |
20006 | unsigned int mod_time, |
20007 | unsigned int length) | |
debd256d | 20008 | { |
27e0867f DE |
20009 | if (dwarf_line_debug >= 2) |
20010 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20011 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20012 | |
ecfb656c | 20013 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20014 | } |
6e70227d | 20015 | |
83769d0b | 20016 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20017 | |
20018 | static struct dwarf2_section_info * | |
20019 | get_debug_line_section (struct dwarf2_cu *cu) | |
20020 | { | |
20021 | struct dwarf2_section_info *section; | |
518817b3 SM |
20022 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20023 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20024 | |
20025 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20026 | DWO file. */ | |
20027 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20028 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20029 | else if (cu->per_cu->is_dwz) | |
20030 | { | |
ed2dc618 | 20031 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20032 | |
20033 | section = &dwz->line; | |
20034 | } | |
20035 | else | |
20036 | section = &dwarf2_per_objfile->line; | |
20037 | ||
20038 | return section; | |
20039 | } | |
20040 | ||
43988095 JK |
20041 | /* Read directory or file name entry format, starting with byte of |
20042 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20043 | entries count and the entries themselves in the described entry | |
20044 | format. */ | |
20045 | ||
20046 | static void | |
ed2dc618 SM |
20047 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20048 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20049 | struct line_header *lh, |
20050 | const struct comp_unit_head *cu_header, | |
20051 | void (*callback) (struct line_header *lh, | |
20052 | const char *name, | |
ecfb656c | 20053 | dir_index d_index, |
43988095 JK |
20054 | unsigned int mod_time, |
20055 | unsigned int length)) | |
20056 | { | |
20057 | gdb_byte format_count, formati; | |
20058 | ULONGEST data_count, datai; | |
20059 | const gdb_byte *buf = *bufp; | |
20060 | const gdb_byte *format_header_data; | |
43988095 JK |
20061 | unsigned int bytes_read; |
20062 | ||
20063 | format_count = read_1_byte (abfd, buf); | |
20064 | buf += 1; | |
20065 | format_header_data = buf; | |
20066 | for (formati = 0; formati < format_count; formati++) | |
20067 | { | |
20068 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20069 | buf += bytes_read; | |
20070 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20071 | buf += bytes_read; | |
20072 | } | |
20073 | ||
20074 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20075 | buf += bytes_read; | |
20076 | for (datai = 0; datai < data_count; datai++) | |
20077 | { | |
20078 | const gdb_byte *format = format_header_data; | |
20079 | struct file_entry fe; | |
20080 | ||
43988095 JK |
20081 | for (formati = 0; formati < format_count; formati++) |
20082 | { | |
ecfb656c | 20083 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20084 | format += bytes_read; |
43988095 | 20085 | |
ecfb656c | 20086 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20087 | format += bytes_read; |
ecfb656c PA |
20088 | |
20089 | gdb::optional<const char *> string; | |
20090 | gdb::optional<unsigned int> uint; | |
20091 | ||
43988095 JK |
20092 | switch (form) |
20093 | { | |
20094 | case DW_FORM_string: | |
ecfb656c | 20095 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20096 | buf += bytes_read; |
20097 | break; | |
20098 | ||
20099 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20100 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20101 | abfd, buf, | |
ecfb656c PA |
20102 | cu_header, |
20103 | &bytes_read)); | |
43988095 JK |
20104 | buf += bytes_read; |
20105 | break; | |
20106 | ||
20107 | case DW_FORM_data1: | |
ecfb656c | 20108 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20109 | buf += 1; |
20110 | break; | |
20111 | ||
20112 | case DW_FORM_data2: | |
ecfb656c | 20113 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20114 | buf += 2; |
20115 | break; | |
20116 | ||
20117 | case DW_FORM_data4: | |
ecfb656c | 20118 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20119 | buf += 4; |
20120 | break; | |
20121 | ||
20122 | case DW_FORM_data8: | |
ecfb656c | 20123 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20124 | buf += 8; |
20125 | break; | |
20126 | ||
20127 | case DW_FORM_udata: | |
ecfb656c | 20128 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20129 | buf += bytes_read; |
20130 | break; | |
20131 | ||
20132 | case DW_FORM_block: | |
20133 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20134 | current GDB. */ | |
20135 | break; | |
20136 | } | |
ecfb656c PA |
20137 | |
20138 | switch (content_type) | |
20139 | { | |
20140 | case DW_LNCT_path: | |
20141 | if (string.has_value ()) | |
20142 | fe.name = *string; | |
20143 | break; | |
20144 | case DW_LNCT_directory_index: | |
20145 | if (uint.has_value ()) | |
20146 | fe.d_index = (dir_index) *uint; | |
20147 | break; | |
20148 | case DW_LNCT_timestamp: | |
20149 | if (uint.has_value ()) | |
20150 | fe.mod_time = *uint; | |
20151 | break; | |
20152 | case DW_LNCT_size: | |
20153 | if (uint.has_value ()) | |
20154 | fe.length = *uint; | |
20155 | break; | |
20156 | case DW_LNCT_MD5: | |
20157 | break; | |
20158 | default: | |
20159 | complaint (&symfile_complaints, | |
20160 | _("Unknown format content type %s"), | |
20161 | pulongest (content_type)); | |
20162 | } | |
43988095 JK |
20163 | } |
20164 | ||
ecfb656c | 20165 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20166 | } |
20167 | ||
20168 | *bufp = buf; | |
20169 | } | |
20170 | ||
debd256d | 20171 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20172 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20173 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20174 | Returns NULL if there is a problem reading the header, e.g., if it |
20175 | has a version we don't understand. | |
debd256d JB |
20176 | |
20177 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20178 | the returned object point into the dwarf line section buffer, |
20179 | and must not be freed. */ | |
ae2de4f8 | 20180 | |
fff8551c | 20181 | static line_header_up |
9c541725 | 20182 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20183 | { |
d521ce57 | 20184 | const gdb_byte *line_ptr; |
c764a876 | 20185 | unsigned int bytes_read, offset_size; |
debd256d | 20186 | int i; |
d521ce57 | 20187 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20188 | struct dwarf2_section_info *section; |
20189 | bfd *abfd; | |
518817b3 SM |
20190 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20191 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20192 | |
36586728 | 20193 | section = get_debug_line_section (cu); |
3019eac3 DE |
20194 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20195 | if (section->buffer == NULL) | |
debd256d | 20196 | { |
3019eac3 DE |
20197 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
20198 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
20199 | else | |
20200 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
20201 | return 0; |
20202 | } | |
20203 | ||
fceca515 DE |
20204 | /* We can't do this until we know the section is non-empty. |
20205 | Only then do we know we have such a section. */ | |
a32a8923 | 20206 | abfd = get_section_bfd_owner (section); |
fceca515 | 20207 | |
a738430d MK |
20208 | /* Make sure that at least there's room for the total_length field. |
20209 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20210 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20211 | { |
4d3c2250 | 20212 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20213 | return 0; |
20214 | } | |
20215 | ||
fff8551c | 20216 | line_header_up lh (new line_header ()); |
debd256d | 20217 | |
9c541725 | 20218 | lh->sect_off = sect_off; |
527f3840 JK |
20219 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20220 | ||
9c541725 | 20221 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20222 | |
a738430d | 20223 | /* Read in the header. */ |
6e70227d | 20224 | lh->total_length = |
c764a876 DE |
20225 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20226 | &bytes_read, &offset_size); | |
debd256d | 20227 | line_ptr += bytes_read; |
3019eac3 | 20228 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20229 | { |
4d3c2250 | 20230 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20231 | return 0; |
20232 | } | |
20233 | lh->statement_program_end = line_ptr + lh->total_length; | |
20234 | lh->version = read_2_bytes (abfd, line_ptr); | |
20235 | line_ptr += 2; | |
43988095 | 20236 | if (lh->version > 5) |
cd366ee8 DE |
20237 | { |
20238 | /* This is a version we don't understand. The format could have | |
20239 | changed in ways we don't handle properly so just punt. */ | |
20240 | complaint (&symfile_complaints, | |
20241 | _("unsupported version in .debug_line section")); | |
20242 | return NULL; | |
20243 | } | |
43988095 JK |
20244 | if (lh->version >= 5) |
20245 | { | |
20246 | gdb_byte segment_selector_size; | |
20247 | ||
20248 | /* Skip address size. */ | |
20249 | read_1_byte (abfd, line_ptr); | |
20250 | line_ptr += 1; | |
20251 | ||
20252 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20253 | line_ptr += 1; | |
20254 | if (segment_selector_size != 0) | |
20255 | { | |
20256 | complaint (&symfile_complaints, | |
20257 | _("unsupported segment selector size %u " | |
20258 | "in .debug_line section"), | |
20259 | segment_selector_size); | |
20260 | return NULL; | |
20261 | } | |
20262 | } | |
c764a876 DE |
20263 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20264 | line_ptr += offset_size; | |
debd256d JB |
20265 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20266 | line_ptr += 1; | |
2dc7f7b3 TT |
20267 | if (lh->version >= 4) |
20268 | { | |
20269 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20270 | line_ptr += 1; | |
20271 | } | |
20272 | else | |
20273 | lh->maximum_ops_per_instruction = 1; | |
20274 | ||
20275 | if (lh->maximum_ops_per_instruction == 0) | |
20276 | { | |
20277 | lh->maximum_ops_per_instruction = 1; | |
20278 | complaint (&symfile_complaints, | |
3e43a32a MS |
20279 | _("invalid maximum_ops_per_instruction " |
20280 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
20281 | } |
20282 | ||
debd256d JB |
20283 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20284 | line_ptr += 1; | |
20285 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20286 | line_ptr += 1; | |
20287 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20288 | line_ptr += 1; | |
20289 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20290 | line_ptr += 1; | |
fff8551c | 20291 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20292 | |
20293 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20294 | for (i = 1; i < lh->opcode_base; ++i) | |
20295 | { | |
20296 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20297 | line_ptr += 1; | |
20298 | } | |
20299 | ||
43988095 | 20300 | if (lh->version >= 5) |
debd256d | 20301 | { |
43988095 | 20302 | /* Read directory table. */ |
ed2dc618 SM |
20303 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20304 | &cu->header, | |
fff8551c | 20305 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20306 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20307 | unsigned int length) |
20308 | { | |
20309 | lh->add_include_dir (name); | |
20310 | }); | |
debd256d | 20311 | |
43988095 | 20312 | /* Read file name table. */ |
ed2dc618 SM |
20313 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20314 | &cu->header, | |
fff8551c | 20315 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20316 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20317 | unsigned int length) |
20318 | { | |
ecfb656c | 20319 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20320 | }); |
43988095 JK |
20321 | } |
20322 | else | |
debd256d | 20323 | { |
43988095 JK |
20324 | /* Read directory table. */ |
20325 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20326 | { | |
20327 | line_ptr += bytes_read; | |
fff8551c | 20328 | lh->add_include_dir (cur_dir); |
43988095 | 20329 | } |
debd256d JB |
20330 | line_ptr += bytes_read; |
20331 | ||
43988095 JK |
20332 | /* Read file name table. */ |
20333 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20334 | { | |
ecfb656c PA |
20335 | unsigned int mod_time, length; |
20336 | dir_index d_index; | |
43988095 JK |
20337 | |
20338 | line_ptr += bytes_read; | |
ecfb656c | 20339 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20340 | line_ptr += bytes_read; |
20341 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20342 | line_ptr += bytes_read; | |
20343 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20344 | line_ptr += bytes_read; | |
20345 | ||
ecfb656c | 20346 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20347 | } |
20348 | line_ptr += bytes_read; | |
debd256d | 20349 | } |
6e70227d | 20350 | lh->statement_program_start = line_ptr; |
debd256d | 20351 | |
3019eac3 | 20352 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 20353 | complaint (&symfile_complaints, |
3e43a32a MS |
20354 | _("line number info header doesn't " |
20355 | "fit in `.debug_line' section")); | |
debd256d | 20356 | |
debd256d JB |
20357 | return lh; |
20358 | } | |
c906108c | 20359 | |
c6da4cef DE |
20360 | /* Subroutine of dwarf_decode_lines to simplify it. |
20361 | Return the file name of the psymtab for included file FILE_INDEX | |
20362 | in line header LH of PST. | |
20363 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20364 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20365 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20366 | |
d521ce57 | 20367 | static const char * |
c6da4cef DE |
20368 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20369 | const struct partial_symtab *pst, | |
c89b44cd TT |
20370 | const char *comp_dir, |
20371 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20372 | { |
8c43009f | 20373 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20374 | const char *include_name = fe.name; |
20375 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20376 | const char *pst_filename; |
c6da4cef DE |
20377 | int file_is_pst; |
20378 | ||
8c43009f | 20379 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20380 | |
c89b44cd | 20381 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20382 | if (!IS_ABSOLUTE_PATH (include_name) |
20383 | && (dir_name != NULL || comp_dir != NULL)) | |
20384 | { | |
20385 | /* Avoid creating a duplicate psymtab for PST. | |
20386 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20387 | Before we do the comparison, however, we need to account | |
20388 | for DIR_NAME and COMP_DIR. | |
20389 | First prepend dir_name (if non-NULL). If we still don't | |
20390 | have an absolute path prepend comp_dir (if non-NULL). | |
20391 | However, the directory we record in the include-file's | |
20392 | psymtab does not contain COMP_DIR (to match the | |
20393 | corresponding symtab(s)). | |
20394 | ||
20395 | Example: | |
20396 | ||
20397 | bash$ cd /tmp | |
20398 | bash$ gcc -g ./hello.c | |
20399 | include_name = "hello.c" | |
20400 | dir_name = "." | |
20401 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20402 | DW_AT_name = "./hello.c" |
20403 | ||
20404 | */ | |
c6da4cef DE |
20405 | |
20406 | if (dir_name != NULL) | |
20407 | { | |
c89b44cd TT |
20408 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20409 | include_name, (char *) NULL)); | |
20410 | include_name = name_holder->get (); | |
c6da4cef | 20411 | include_name_to_compare = include_name; |
c6da4cef DE |
20412 | } |
20413 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20414 | { | |
c89b44cd TT |
20415 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20416 | include_name, (char *) NULL)); | |
20417 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20418 | } |
20419 | } | |
20420 | ||
20421 | pst_filename = pst->filename; | |
c89b44cd | 20422 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20423 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20424 | { | |
c89b44cd TT |
20425 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20426 | pst_filename, (char *) NULL)); | |
20427 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20428 | } |
20429 | ||
1e3fad37 | 20430 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20431 | |
c6da4cef DE |
20432 | if (file_is_pst) |
20433 | return NULL; | |
20434 | return include_name; | |
20435 | } | |
20436 | ||
d9b3de22 DE |
20437 | /* State machine to track the state of the line number program. */ |
20438 | ||
6f77053d | 20439 | class lnp_state_machine |
d9b3de22 | 20440 | { |
6f77053d PA |
20441 | public: |
20442 | /* Initialize a machine state for the start of a line number | |
20443 | program. */ | |
20444 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
20445 | ||
8c43009f PA |
20446 | file_entry *current_file () |
20447 | { | |
20448 | /* lh->file_names is 0-based, but the file name numbers in the | |
20449 | statement program are 1-based. */ | |
6f77053d PA |
20450 | return m_line_header->file_name_at (m_file); |
20451 | } | |
20452 | ||
20453 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20454 | we're processing the end of a sequence. */ | |
20455 | void record_line (bool end_sequence); | |
20456 | ||
20457 | /* Check address and if invalid nop-out the rest of the lines in this | |
20458 | sequence. */ | |
20459 | void check_line_address (struct dwarf2_cu *cu, | |
20460 | const gdb_byte *line_ptr, | |
20461 | CORE_ADDR lowpc, CORE_ADDR address); | |
20462 | ||
20463 | void handle_set_discriminator (unsigned int discriminator) | |
20464 | { | |
20465 | m_discriminator = discriminator; | |
20466 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20467 | } | |
20468 | ||
20469 | /* Handle DW_LNE_set_address. */ | |
20470 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20471 | { | |
20472 | m_op_index = 0; | |
20473 | address += baseaddr; | |
20474 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20475 | } | |
20476 | ||
20477 | /* Handle DW_LNS_advance_pc. */ | |
20478 | void handle_advance_pc (CORE_ADDR adjust); | |
20479 | ||
20480 | /* Handle a special opcode. */ | |
20481 | void handle_special_opcode (unsigned char op_code); | |
20482 | ||
20483 | /* Handle DW_LNS_advance_line. */ | |
20484 | void handle_advance_line (int line_delta) | |
20485 | { | |
20486 | advance_line (line_delta); | |
20487 | } | |
20488 | ||
20489 | /* Handle DW_LNS_set_file. */ | |
20490 | void handle_set_file (file_name_index file); | |
20491 | ||
20492 | /* Handle DW_LNS_negate_stmt. */ | |
20493 | void handle_negate_stmt () | |
20494 | { | |
20495 | m_is_stmt = !m_is_stmt; | |
20496 | } | |
20497 | ||
20498 | /* Handle DW_LNS_const_add_pc. */ | |
20499 | void handle_const_add_pc (); | |
20500 | ||
20501 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20502 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20503 | { | |
20504 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20505 | m_op_index = 0; | |
20506 | } | |
20507 | ||
20508 | /* Handle DW_LNS_copy. */ | |
20509 | void handle_copy () | |
20510 | { | |
20511 | record_line (false); | |
20512 | m_discriminator = 0; | |
20513 | } | |
20514 | ||
20515 | /* Handle DW_LNE_end_sequence. */ | |
20516 | void handle_end_sequence () | |
20517 | { | |
20518 | m_record_line_callback = ::record_line; | |
20519 | } | |
20520 | ||
20521 | private: | |
20522 | /* Advance the line by LINE_DELTA. */ | |
20523 | void advance_line (int line_delta) | |
20524 | { | |
20525 | m_line += line_delta; | |
20526 | ||
20527 | if (line_delta != 0) | |
20528 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20529 | } |
20530 | ||
6f77053d PA |
20531 | gdbarch *m_gdbarch; |
20532 | ||
20533 | /* True if we're recording lines. | |
20534 | Otherwise we're building partial symtabs and are just interested in | |
20535 | finding include files mentioned by the line number program. */ | |
20536 | bool m_record_lines_p; | |
20537 | ||
8c43009f | 20538 | /* The line number header. */ |
6f77053d | 20539 | line_header *m_line_header; |
8c43009f | 20540 | |
6f77053d PA |
20541 | /* These are part of the standard DWARF line number state machine, |
20542 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20543 | |
6f77053d | 20544 | unsigned char m_op_index = 0; |
8c43009f | 20545 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20546 | file_name_index m_file = (file_name_index) 1; |
20547 | unsigned int m_line = 1; | |
20548 | ||
20549 | /* These are initialized in the constructor. */ | |
20550 | ||
20551 | CORE_ADDR m_address; | |
20552 | bool m_is_stmt; | |
20553 | unsigned int m_discriminator; | |
d9b3de22 DE |
20554 | |
20555 | /* Additional bits of state we need to track. */ | |
20556 | ||
20557 | /* The last file that we called dwarf2_start_subfile for. | |
20558 | This is only used for TLLs. */ | |
6f77053d | 20559 | unsigned int m_last_file = 0; |
d9b3de22 | 20560 | /* The last file a line number was recorded for. */ |
6f77053d | 20561 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
20562 | |
20563 | /* The function to call to record a line. */ | |
6f77053d | 20564 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
20565 | |
20566 | /* The last line number that was recorded, used to coalesce | |
20567 | consecutive entries for the same line. This can happen, for | |
20568 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20569 | unsigned int m_last_line = 0; |
20570 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20571 | }; |
d9b3de22 | 20572 | |
6f77053d PA |
20573 | void |
20574 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20575 | { | |
20576 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20577 | / m_line_header->maximum_ops_per_instruction) | |
20578 | * m_line_header->minimum_instruction_length); | |
20579 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20580 | m_op_index = ((m_op_index + adjust) | |
20581 | % m_line_header->maximum_ops_per_instruction); | |
20582 | } | |
d9b3de22 | 20583 | |
6f77053d PA |
20584 | void |
20585 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20586 | { |
6f77053d PA |
20587 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20588 | CORE_ADDR addr_adj = (((m_op_index | |
20589 | + (adj_opcode / m_line_header->line_range)) | |
20590 | / m_line_header->maximum_ops_per_instruction) | |
20591 | * m_line_header->minimum_instruction_length); | |
20592 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20593 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20594 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20595 | |
6f77053d PA |
20596 | int line_delta = (m_line_header->line_base |
20597 | + (adj_opcode % m_line_header->line_range)); | |
20598 | advance_line (line_delta); | |
20599 | record_line (false); | |
20600 | m_discriminator = 0; | |
20601 | } | |
d9b3de22 | 20602 | |
6f77053d PA |
20603 | void |
20604 | lnp_state_machine::handle_set_file (file_name_index file) | |
20605 | { | |
20606 | m_file = file; | |
20607 | ||
20608 | const file_entry *fe = current_file (); | |
20609 | if (fe == NULL) | |
20610 | dwarf2_debug_line_missing_file_complaint (); | |
20611 | else if (m_record_lines_p) | |
20612 | { | |
20613 | const char *dir = fe->include_dir (m_line_header); | |
20614 | ||
20615 | m_last_subfile = current_subfile; | |
20616 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
20617 | dwarf2_start_subfile (fe->name, dir); | |
20618 | } | |
20619 | } | |
20620 | ||
20621 | void | |
20622 | lnp_state_machine::handle_const_add_pc () | |
20623 | { | |
20624 | CORE_ADDR adjust | |
20625 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20626 | ||
20627 | CORE_ADDR addr_adj | |
20628 | = (((m_op_index + adjust) | |
20629 | / m_line_header->maximum_ops_per_instruction) | |
20630 | * m_line_header->minimum_instruction_length); | |
20631 | ||
20632 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20633 | m_op_index = ((m_op_index + adjust) | |
20634 | % m_line_header->maximum_ops_per_instruction); | |
20635 | } | |
d9b3de22 | 20636 | |
c91513d8 PP |
20637 | /* Ignore this record_line request. */ |
20638 | ||
20639 | static void | |
20640 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
20641 | { | |
20642 | return; | |
20643 | } | |
20644 | ||
a05a36a5 DE |
20645 | /* Return non-zero if we should add LINE to the line number table. |
20646 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20647 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20648 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20649 | had a non-zero discriminator. | |
20650 | ||
20651 | We have to be careful in the presence of discriminators. | |
20652 | E.g., for this line: | |
20653 | ||
20654 | for (i = 0; i < 100000; i++); | |
20655 | ||
20656 | clang can emit four line number entries for that one line, | |
20657 | each with a different discriminator. | |
20658 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20659 | ||
20660 | However, we want gdb to coalesce all four entries into one. | |
20661 | Otherwise the user could stepi into the middle of the line and | |
20662 | gdb would get confused about whether the pc really was in the | |
20663 | middle of the line. | |
20664 | ||
20665 | Things are further complicated by the fact that two consecutive | |
20666 | line number entries for the same line is a heuristic used by gcc | |
20667 | to denote the end of the prologue. So we can't just discard duplicate | |
20668 | entries, we have to be selective about it. The heuristic we use is | |
20669 | that we only collapse consecutive entries for the same line if at least | |
20670 | one of those entries has a non-zero discriminator. PR 17276. | |
20671 | ||
20672 | Note: Addresses in the line number state machine can never go backwards | |
20673 | within one sequence, thus this coalescing is ok. */ | |
20674 | ||
20675 | static int | |
20676 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
20677 | int line_has_non_zero_discriminator, | |
20678 | struct subfile *last_subfile) | |
20679 | { | |
20680 | if (current_subfile != last_subfile) | |
20681 | return 1; | |
20682 | if (line != last_line) | |
20683 | return 1; | |
20684 | /* Same line for the same file that we've seen already. | |
20685 | As a last check, for pr 17276, only record the line if the line | |
20686 | has never had a non-zero discriminator. */ | |
20687 | if (!line_has_non_zero_discriminator) | |
20688 | return 1; | |
20689 | return 0; | |
20690 | } | |
20691 | ||
252a6764 DE |
20692 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
20693 | in the line table of subfile SUBFILE. */ | |
20694 | ||
20695 | static void | |
d9b3de22 DE |
20696 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20697 | unsigned int line, CORE_ADDR address, | |
20698 | record_line_ftype p_record_line) | |
252a6764 DE |
20699 | { |
20700 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20701 | ||
27e0867f DE |
20702 | if (dwarf_line_debug) |
20703 | { | |
20704 | fprintf_unfiltered (gdb_stdlog, | |
20705 | "Recording line %u, file %s, address %s\n", | |
20706 | line, lbasename (subfile->name), | |
20707 | paddress (gdbarch, address)); | |
20708 | } | |
20709 | ||
d5962de5 | 20710 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
20711 | } |
20712 | ||
20713 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20714 | Mark the end of a set of line number records. | |
d9b3de22 | 20715 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20716 | If SUBFILE is NULL the request is ignored. */ |
20717 | ||
20718 | static void | |
20719 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
20720 | CORE_ADDR address, record_line_ftype p_record_line) | |
20721 | { | |
27e0867f DE |
20722 | if (subfile == NULL) |
20723 | return; | |
20724 | ||
20725 | if (dwarf_line_debug) | |
20726 | { | |
20727 | fprintf_unfiltered (gdb_stdlog, | |
20728 | "Finishing current line, file %s, address %s\n", | |
20729 | lbasename (subfile->name), | |
20730 | paddress (gdbarch, address)); | |
20731 | } | |
20732 | ||
d9b3de22 DE |
20733 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
20734 | } | |
20735 | ||
6f77053d PA |
20736 | void |
20737 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20738 | { |
d9b3de22 DE |
20739 | if (dwarf_line_debug) |
20740 | { | |
20741 | fprintf_unfiltered (gdb_stdlog, | |
20742 | "Processing actual line %u: file %u," | |
20743 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20744 | m_line, to_underlying (m_file), |
20745 | paddress (m_gdbarch, m_address), | |
20746 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20747 | } |
20748 | ||
6f77053d | 20749 | file_entry *fe = current_file (); |
8c43009f PA |
20750 | |
20751 | if (fe == NULL) | |
d9b3de22 DE |
20752 | dwarf2_debug_line_missing_file_complaint (); |
20753 | /* For now we ignore lines not starting on an instruction boundary. | |
20754 | But not when processing end_sequence for compatibility with the | |
20755 | previous version of the code. */ | |
6f77053d | 20756 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20757 | { |
8c43009f | 20758 | fe->included_p = 1; |
6f77053d | 20759 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 20760 | { |
6f77053d | 20761 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 20762 | { |
6f77053d PA |
20763 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
20764 | m_address, m_record_line_callback); | |
d9b3de22 DE |
20765 | } |
20766 | ||
20767 | if (!end_sequence) | |
20768 | { | |
6f77053d PA |
20769 | if (dwarf_record_line_p (m_line, m_last_line, |
20770 | m_line_has_non_zero_discriminator, | |
20771 | m_last_subfile)) | |
d9b3de22 | 20772 | { |
6f77053d PA |
20773 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
20774 | m_line, m_address, | |
20775 | m_record_line_callback); | |
d9b3de22 | 20776 | } |
6f77053d PA |
20777 | m_last_subfile = current_subfile; |
20778 | m_last_line = m_line; | |
d9b3de22 DE |
20779 | } |
20780 | } | |
20781 | } | |
20782 | } | |
20783 | ||
6f77053d PA |
20784 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
20785 | bool record_lines_p) | |
d9b3de22 | 20786 | { |
6f77053d PA |
20787 | m_gdbarch = arch; |
20788 | m_record_lines_p = record_lines_p; | |
20789 | m_line_header = lh; | |
d9b3de22 | 20790 | |
6f77053d | 20791 | m_record_line_callback = ::record_line; |
d9b3de22 | 20792 | |
d9b3de22 DE |
20793 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20794 | was a line entry for it so that the backend has a chance to adjust it | |
20795 | and also record it in case it needs it. This is currently used by MIPS | |
20796 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20797 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20798 | m_is_stmt = lh->default_is_stmt; | |
20799 | m_discriminator = 0; | |
252a6764 DE |
20800 | } |
20801 | ||
6f77053d PA |
20802 | void |
20803 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20804 | const gdb_byte *line_ptr, | |
20805 | CORE_ADDR lowpc, CORE_ADDR address) | |
924c2928 DE |
20806 | { |
20807 | /* If address < lowpc then it's not a usable value, it's outside the | |
20808 | pc range of the CU. However, we restrict the test to only address | |
20809 | values of zero to preserve GDB's previous behaviour which is to | |
20810 | handle the specific case of a function being GC'd by the linker. */ | |
20811 | ||
20812 | if (address == 0 && address < lowpc) | |
20813 | { | |
20814 | /* This line table is for a function which has been | |
20815 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20816 | ||
518817b3 | 20817 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20818 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20819 | ||
20820 | complaint (&symfile_complaints, | |
20821 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
20822 | line_offset, objfile_name (objfile)); | |
6f77053d PA |
20823 | m_record_line_callback = noop_record_line; |
20824 | /* Note: record_line_callback is left as noop_record_line until | |
20825 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
20826 | } |
20827 | } | |
20828 | ||
f3f5162e | 20829 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20830 | Process the line number information in LH. |
20831 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20832 | program in order to set included_p for every referenced header. */ | |
debd256d | 20833 | |
c906108c | 20834 | static void |
43f3e411 DE |
20835 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20836 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20837 | { |
d521ce57 TT |
20838 | const gdb_byte *line_ptr, *extended_end; |
20839 | const gdb_byte *line_end; | |
a8c50c1f | 20840 | unsigned int bytes_read, extended_len; |
699ca60a | 20841 | unsigned char op_code, extended_op; |
e142c38c | 20842 | CORE_ADDR baseaddr; |
518817b3 | 20843 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20844 | bfd *abfd = objfile->obfd; |
fbf65064 | 20845 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20846 | /* True if we're recording line info (as opposed to building partial |
20847 | symtabs and just interested in finding include files mentioned by | |
20848 | the line number program). */ | |
20849 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20850 | |
20851 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20852 | |
debd256d JB |
20853 | line_ptr = lh->statement_program_start; |
20854 | line_end = lh->statement_program_end; | |
c906108c SS |
20855 | |
20856 | /* Read the statement sequences until there's nothing left. */ | |
20857 | while (line_ptr < line_end) | |
20858 | { | |
6f77053d PA |
20859 | /* The DWARF line number program state machine. Reset the state |
20860 | machine at the start of each sequence. */ | |
20861 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
20862 | bool end_sequence = false; | |
d9b3de22 | 20863 | |
8c43009f | 20864 | if (record_lines_p) |
c906108c | 20865 | { |
8c43009f PA |
20866 | /* Start a subfile for the current file of the state |
20867 | machine. */ | |
20868 | const file_entry *fe = state_machine.current_file (); | |
20869 | ||
20870 | if (fe != NULL) | |
20871 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
20872 | } |
20873 | ||
a738430d | 20874 | /* Decode the table. */ |
d9b3de22 | 20875 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20876 | { |
20877 | op_code = read_1_byte (abfd, line_ptr); | |
20878 | line_ptr += 1; | |
9aa1fe7e | 20879 | |
debd256d | 20880 | if (op_code >= lh->opcode_base) |
6e70227d | 20881 | { |
8e07a239 | 20882 | /* Special opcode. */ |
6f77053d | 20883 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20884 | } |
20885 | else switch (op_code) | |
c906108c SS |
20886 | { |
20887 | case DW_LNS_extended_op: | |
3e43a32a MS |
20888 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20889 | &bytes_read); | |
473b7be6 | 20890 | line_ptr += bytes_read; |
a8c50c1f | 20891 | extended_end = line_ptr + extended_len; |
c906108c SS |
20892 | extended_op = read_1_byte (abfd, line_ptr); |
20893 | line_ptr += 1; | |
20894 | switch (extended_op) | |
20895 | { | |
20896 | case DW_LNE_end_sequence: | |
6f77053d PA |
20897 | state_machine.handle_end_sequence (); |
20898 | end_sequence = true; | |
c906108c SS |
20899 | break; |
20900 | case DW_LNE_set_address: | |
d9b3de22 DE |
20901 | { |
20902 | CORE_ADDR address | |
20903 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20904 | line_ptr += bytes_read; |
6f77053d PA |
20905 | |
20906 | state_machine.check_line_address (cu, line_ptr, | |
20907 | lowpc, address); | |
20908 | state_machine.handle_set_address (baseaddr, address); | |
d9b3de22 | 20909 | } |
c906108c SS |
20910 | break; |
20911 | case DW_LNE_define_file: | |
debd256d | 20912 | { |
d521ce57 | 20913 | const char *cur_file; |
ecfb656c PA |
20914 | unsigned int mod_time, length; |
20915 | dir_index dindex; | |
6e70227d | 20916 | |
3e43a32a MS |
20917 | cur_file = read_direct_string (abfd, line_ptr, |
20918 | &bytes_read); | |
debd256d | 20919 | line_ptr += bytes_read; |
ecfb656c | 20920 | dindex = (dir_index) |
debd256d JB |
20921 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20922 | line_ptr += bytes_read; | |
20923 | mod_time = | |
20924 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20925 | line_ptr += bytes_read; | |
20926 | length = | |
20927 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20928 | line_ptr += bytes_read; | |
ecfb656c | 20929 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20930 | } |
c906108c | 20931 | break; |
d0c6ba3d | 20932 | case DW_LNE_set_discriminator: |
6f77053d PA |
20933 | { |
20934 | /* The discriminator is not interesting to the | |
20935 | debugger; just ignore it. We still need to | |
20936 | check its value though: | |
20937 | if there are consecutive entries for the same | |
20938 | (non-prologue) line we want to coalesce them. | |
20939 | PR 17276. */ | |
20940 | unsigned int discr | |
20941 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20942 | line_ptr += bytes_read; | |
20943 | ||
20944 | state_machine.handle_set_discriminator (discr); | |
20945 | } | |
d0c6ba3d | 20946 | break; |
c906108c | 20947 | default: |
4d3c2250 | 20948 | complaint (&symfile_complaints, |
e2e0b3e5 | 20949 | _("mangled .debug_line section")); |
debd256d | 20950 | return; |
c906108c | 20951 | } |
a8c50c1f DJ |
20952 | /* Make sure that we parsed the extended op correctly. If e.g. |
20953 | we expected a different address size than the producer used, | |
20954 | we may have read the wrong number of bytes. */ | |
20955 | if (line_ptr != extended_end) | |
20956 | { | |
20957 | complaint (&symfile_complaints, | |
20958 | _("mangled .debug_line section")); | |
20959 | return; | |
20960 | } | |
c906108c SS |
20961 | break; |
20962 | case DW_LNS_copy: | |
6f77053d | 20963 | state_machine.handle_copy (); |
c906108c SS |
20964 | break; |
20965 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20966 | { |
20967 | CORE_ADDR adjust | |
20968 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20969 | line_ptr += bytes_read; |
6f77053d PA |
20970 | |
20971 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20972 | } |
c906108c SS |
20973 | break; |
20974 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20975 | { |
20976 | int line_delta | |
20977 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20978 | line_ptr += bytes_read; |
6f77053d PA |
20979 | |
20980 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20981 | } |
c906108c SS |
20982 | break; |
20983 | case DW_LNS_set_file: | |
d9b3de22 | 20984 | { |
6f77053d | 20985 | file_name_index file |
ecfb656c PA |
20986 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20987 | &bytes_read); | |
d9b3de22 | 20988 | line_ptr += bytes_read; |
8c43009f | 20989 | |
6f77053d | 20990 | state_machine.handle_set_file (file); |
d9b3de22 | 20991 | } |
c906108c SS |
20992 | break; |
20993 | case DW_LNS_set_column: | |
0ad93d4f | 20994 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20995 | line_ptr += bytes_read; |
20996 | break; | |
20997 | case DW_LNS_negate_stmt: | |
6f77053d | 20998 | state_machine.handle_negate_stmt (); |
c906108c SS |
20999 | break; |
21000 | case DW_LNS_set_basic_block: | |
c906108c | 21001 | break; |
c2c6d25f JM |
21002 | /* Add to the address register of the state machine the |
21003 | address increment value corresponding to special opcode | |
a738430d MK |
21004 | 255. I.e., this value is scaled by the minimum |
21005 | instruction length since special opcode 255 would have | |
b021a221 | 21006 | scaled the increment. */ |
c906108c | 21007 | case DW_LNS_const_add_pc: |
6f77053d | 21008 | state_machine.handle_const_add_pc (); |
c906108c SS |
21009 | break; |
21010 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21011 | { |
6f77053d | 21012 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21013 | line_ptr += 2; |
6f77053d PA |
21014 | |
21015 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21016 | } |
c906108c | 21017 | break; |
9aa1fe7e | 21018 | default: |
a738430d MK |
21019 | { |
21020 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21021 | int i; |
a738430d | 21022 | |
debd256d | 21023 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21024 | { |
21025 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21026 | line_ptr += bytes_read; | |
21027 | } | |
21028 | } | |
c906108c SS |
21029 | } |
21030 | } | |
d9b3de22 DE |
21031 | |
21032 | if (!end_sequence) | |
21033 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21034 | ||
21035 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21036 | in which case we still finish recording the last line). */ | |
6f77053d | 21037 | state_machine.record_line (true); |
c906108c | 21038 | } |
f3f5162e DE |
21039 | } |
21040 | ||
21041 | /* Decode the Line Number Program (LNP) for the given line_header | |
21042 | structure and CU. The actual information extracted and the type | |
21043 | of structures created from the LNP depends on the value of PST. | |
21044 | ||
21045 | 1. If PST is NULL, then this procedure uses the data from the program | |
21046 | to create all necessary symbol tables, and their linetables. | |
21047 | ||
21048 | 2. If PST is not NULL, this procedure reads the program to determine | |
21049 | the list of files included by the unit represented by PST, and | |
21050 | builds all the associated partial symbol tables. | |
21051 | ||
21052 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21053 | It is used for relative paths in the line table. | |
21054 | NOTE: When processing partial symtabs (pst != NULL), | |
21055 | comp_dir == pst->dirname. | |
21056 | ||
21057 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21058 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21059 | symtab we don't use it in the name of the psymtabs we create. | |
21060 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21061 | A good testcase for this is mb-inline.exp. |
21062 | ||
527f3840 JK |
21063 | LOWPC is the lowest address in CU (or 0 if not known). |
21064 | ||
21065 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21066 | for its PC<->lines mapping information. Otherwise only the filename | |
21067 | table is read in. */ | |
f3f5162e DE |
21068 | |
21069 | static void | |
21070 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21071 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21072 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21073 | { |
518817b3 | 21074 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21075 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21076 | |
527f3840 JK |
21077 | if (decode_mapping) |
21078 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21079 | |
21080 | if (decode_for_pst_p) | |
21081 | { | |
21082 | int file_index; | |
21083 | ||
21084 | /* Now that we're done scanning the Line Header Program, we can | |
21085 | create the psymtab of each included file. */ | |
fff8551c | 21086 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21087 | if (lh->file_names[file_index].included_p == 1) |
21088 | { | |
c89b44cd | 21089 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21090 | const char *include_name = |
c89b44cd TT |
21091 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21092 | &name_holder); | |
c6da4cef | 21093 | if (include_name != NULL) |
aaa75496 JB |
21094 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21095 | } | |
21096 | } | |
cb1df416 DJ |
21097 | else |
21098 | { | |
21099 | /* Make sure a symtab is created for every file, even files | |
21100 | which contain only variables (i.e. no code with associated | |
21101 | line numbers). */ | |
43f3e411 | 21102 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 21103 | int i; |
cb1df416 | 21104 | |
fff8551c | 21105 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21106 | { |
8c43009f | 21107 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21108 | |
8c43009f | 21109 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 21110 | |
cb1df416 | 21111 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
21112 | { |
21113 | current_subfile->symtab | |
21114 | = allocate_symtab (cust, current_subfile->name); | |
21115 | } | |
8c43009f | 21116 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
21117 | } |
21118 | } | |
c906108c SS |
21119 | } |
21120 | ||
21121 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21122 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21123 | or NULL if not known. |
c906108c SS |
21124 | This routine tries to keep line numbers from identical absolute and |
21125 | relative file names in a common subfile. | |
21126 | ||
21127 | Using the `list' example from the GDB testsuite, which resides in | |
21128 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21129 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21130 | ||
c5aa993b | 21131 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21132 | DW_AT_comp_dir: /compdir |
357e46e7 | 21133 | files.files[0].name: list0.h |
c5aa993b | 21134 | files.files[0].dir: /srcdir |
357e46e7 | 21135 | files.files[1].name: list0.c |
c5aa993b | 21136 | files.files[1].dir: /srcdir |
c906108c SS |
21137 | |
21138 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21139 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21140 | start_subfile will ensure that this happens provided that we pass the | |
21141 | concatenation of files.files[1].dir and files.files[1].name as the | |
21142 | subfile's name. */ | |
c906108c SS |
21143 | |
21144 | static void | |
4d663531 | 21145 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 21146 | { |
d521ce57 | 21147 | char *copy = NULL; |
4f1520fb | 21148 | |
4d663531 | 21149 | /* In order not to lose the line information directory, |
4f1520fb FR |
21150 | we concatenate it to the filename when it makes sense. |
21151 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21152 | information): ``The directory index is ignored for file names | |
21153 | that represent full path names''. Thus ignoring dirname in the | |
21154 | `else' branch below isn't an issue. */ | |
c906108c | 21155 | |
d5166ae1 | 21156 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21157 | { |
21158 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21159 | filename = copy; | |
21160 | } | |
c906108c | 21161 | |
4d663531 | 21162 | start_subfile (filename); |
4f1520fb | 21163 | |
d521ce57 TT |
21164 | if (copy != NULL) |
21165 | xfree (copy); | |
c906108c SS |
21166 | } |
21167 | ||
f4dc4d17 DE |
21168 | /* Start a symtab for DWARF. |
21169 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
21170 | ||
43f3e411 | 21171 | static struct compunit_symtab * |
f4dc4d17 | 21172 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21173 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21174 | { |
43f3e411 | 21175 | struct compunit_symtab *cust |
518817b3 SM |
21176 | = start_symtab (cu->per_cu->dwarf2_per_objfile->objfile, name, comp_dir, |
21177 | low_pc, cu->language); | |
43f3e411 | 21178 | |
f4dc4d17 DE |
21179 | record_debugformat ("DWARF 2"); |
21180 | record_producer (cu->producer); | |
21181 | ||
21182 | /* We assume that we're processing GCC output. */ | |
21183 | processing_gcc_compilation = 2; | |
21184 | ||
4d4ec4e5 | 21185 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
21186 | |
21187 | return cust; | |
f4dc4d17 DE |
21188 | } |
21189 | ||
4c2df51b DJ |
21190 | static void |
21191 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21192 | struct dwarf2_cu *cu) |
4c2df51b | 21193 | { |
518817b3 | 21194 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21195 | struct comp_unit_head *cu_header = &cu->header; |
21196 | ||
4c2df51b DJ |
21197 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21198 | code here to turn a symbol with DW_AT_external and a | |
21199 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21200 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21201 | with some versions of binutils) where shared libraries could have | |
21202 | relocations against symbols in their debug information - the | |
21203 | minimal symbol would have the right address, but the debug info | |
21204 | would not. It's no longer necessary, because we will explicitly | |
21205 | apply relocations when we read in the debug information now. */ | |
21206 | ||
21207 | /* A DW_AT_location attribute with no contents indicates that a | |
21208 | variable has been optimized away. */ | |
21209 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21210 | { | |
f1e6e072 | 21211 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21212 | return; |
21213 | } | |
21214 | ||
21215 | /* Handle one degenerate form of location expression specially, to | |
21216 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21217 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21218 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21219 | |
21220 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21221 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21222 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21223 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21224 | && (DW_BLOCK (attr)->size | |
21225 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21226 | { |
891d2f0b | 21227 | unsigned int dummy; |
4c2df51b | 21228 | |
3019eac3 DE |
21229 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21230 | SYMBOL_VALUE_ADDRESS (sym) = | |
21231 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21232 | else | |
21233 | SYMBOL_VALUE_ADDRESS (sym) = | |
21234 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21235 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21236 | fixup_symbol_section (sym, objfile); |
21237 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21238 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21239 | return; |
21240 | } | |
21241 | ||
21242 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21243 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21244 | (i.e. when the value of a register or memory location is | |
21245 | referenced, or a thread-local block, etc.). Then again, it might | |
21246 | not be worthwhile. I'm assuming that it isn't unless performance | |
21247 | or memory numbers show me otherwise. */ | |
21248 | ||
f1e6e072 | 21249 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21250 | |
f1e6e072 | 21251 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21252 | cu->has_loclist = 1; |
4c2df51b DJ |
21253 | } |
21254 | ||
c906108c SS |
21255 | /* Given a pointer to a DWARF information entry, figure out if we need |
21256 | to make a symbol table entry for it, and if so, create a new entry | |
21257 | and return a pointer to it. | |
21258 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21259 | used the passed type. |
21260 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21261 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21262 | |
21263 | static struct symbol * | |
5e2db402 TT |
21264 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21265 | struct symbol *space) | |
c906108c | 21266 | { |
518817b3 SM |
21267 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21268 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21269 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21270 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21271 | struct symbol *sym = NULL; |
15d034d0 | 21272 | const char *name; |
c906108c SS |
21273 | struct attribute *attr = NULL; |
21274 | struct attribute *attr2 = NULL; | |
e142c38c | 21275 | CORE_ADDR baseaddr; |
e37fd15a SW |
21276 | struct pending **list_to_add = NULL; |
21277 | ||
edb3359d | 21278 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21279 | |
21280 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21281 | |
94af9270 | 21282 | name = dwarf2_name (die, cu); |
c906108c SS |
21283 | if (name) |
21284 | { | |
94af9270 | 21285 | const char *linkagename; |
34eaf542 | 21286 | int suppress_add = 0; |
94af9270 | 21287 | |
34eaf542 TT |
21288 | if (space) |
21289 | sym = space; | |
21290 | else | |
e623cf5d | 21291 | sym = allocate_symbol (objfile); |
c906108c | 21292 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21293 | |
21294 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21295 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21296 | linkagename = dwarf2_physname (name, die, cu); |
21297 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21298 | |
f55ee35c JK |
21299 | /* Fortran does not have mangling standard and the mangling does differ |
21300 | between gfortran, iFort etc. */ | |
21301 | if (cu->language == language_fortran | |
b250c185 | 21302 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21303 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21304 | dwarf2_full_name (name, die, cu), |
29df156d | 21305 | NULL); |
f55ee35c | 21306 | |
c906108c | 21307 | /* Default assumptions. |
c5aa993b | 21308 | Use the passed type or decode it from the die. */ |
176620f1 | 21309 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21310 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21311 | if (type != NULL) |
21312 | SYMBOL_TYPE (sym) = type; | |
21313 | else | |
e7c27a73 | 21314 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21315 | attr = dwarf2_attr (die, |
21316 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21317 | cu); | |
c906108c SS |
21318 | if (attr) |
21319 | { | |
21320 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21321 | } | |
cb1df416 | 21322 | |
edb3359d DJ |
21323 | attr = dwarf2_attr (die, |
21324 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21325 | cu); | |
cb1df416 DJ |
21326 | if (attr) |
21327 | { | |
ecfb656c | 21328 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21329 | struct file_entry *fe; |
9a619af0 | 21330 | |
ecfb656c PA |
21331 | if (cu->line_header != NULL) |
21332 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21333 | else |
21334 | fe = NULL; | |
21335 | ||
21336 | if (fe == NULL) | |
cb1df416 DJ |
21337 | complaint (&symfile_complaints, |
21338 | _("file index out of range")); | |
8c43009f PA |
21339 | else |
21340 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21341 | } |
21342 | ||
c906108c SS |
21343 | switch (die->tag) |
21344 | { | |
21345 | case DW_TAG_label: | |
e142c38c | 21346 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21347 | if (attr) |
3e29f34a MR |
21348 | { |
21349 | CORE_ADDR addr; | |
21350 | ||
21351 | addr = attr_value_as_address (attr); | |
21352 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21353 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21354 | } | |
0f5238ed TT |
21355 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21356 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21357 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 21358 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21359 | break; |
21360 | case DW_TAG_subprogram: | |
21361 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21362 | finish_block. */ | |
f1e6e072 | 21363 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21364 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21365 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21366 | || cu->language == language_ada) | |
c906108c | 21367 | { |
2cfa0c8d JB |
21368 | /* Subprograms marked external are stored as a global symbol. |
21369 | Ada subprograms, whether marked external or not, are always | |
21370 | stored as a global symbol, because we want to be able to | |
21371 | access them globally. For instance, we want to be able | |
21372 | to break on a nested subprogram without having to | |
21373 | specify the context. */ | |
e37fd15a | 21374 | list_to_add = &global_symbols; |
c906108c SS |
21375 | } |
21376 | else | |
21377 | { | |
e37fd15a | 21378 | list_to_add = cu->list_in_scope; |
c906108c SS |
21379 | } |
21380 | break; | |
edb3359d DJ |
21381 | case DW_TAG_inlined_subroutine: |
21382 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21383 | finish_block. */ | |
f1e6e072 | 21384 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21385 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21386 | list_to_add = cu->list_in_scope; |
edb3359d | 21387 | break; |
34eaf542 TT |
21388 | case DW_TAG_template_value_param: |
21389 | suppress_add = 1; | |
21390 | /* Fall through. */ | |
72929c62 | 21391 | case DW_TAG_constant: |
c906108c | 21392 | case DW_TAG_variable: |
254e6b9e | 21393 | case DW_TAG_member: |
0963b4bd MS |
21394 | /* Compilation with minimal debug info may result in |
21395 | variables with missing type entries. Change the | |
21396 | misleading `void' type to something sensible. */ | |
c906108c | 21397 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21398 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21399 | |
e142c38c | 21400 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21401 | /* In the case of DW_TAG_member, we should only be called for |
21402 | static const members. */ | |
21403 | if (die->tag == DW_TAG_member) | |
21404 | { | |
3863f96c DE |
21405 | /* dwarf2_add_field uses die_is_declaration, |
21406 | so we do the same. */ | |
254e6b9e DE |
21407 | gdb_assert (die_is_declaration (die, cu)); |
21408 | gdb_assert (attr); | |
21409 | } | |
c906108c SS |
21410 | if (attr) |
21411 | { | |
e7c27a73 | 21412 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21413 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21414 | if (!suppress_add) |
34eaf542 TT |
21415 | { |
21416 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 21417 | list_to_add = &global_symbols; |
34eaf542 | 21418 | else |
e37fd15a | 21419 | list_to_add = cu->list_in_scope; |
34eaf542 | 21420 | } |
c906108c SS |
21421 | break; |
21422 | } | |
e142c38c | 21423 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21424 | if (attr) |
21425 | { | |
e7c27a73 | 21426 | var_decode_location (attr, sym, cu); |
e142c38c | 21427 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21428 | |
21429 | /* Fortran explicitly imports any global symbols to the local | |
21430 | scope by DW_TAG_common_block. */ | |
21431 | if (cu->language == language_fortran && die->parent | |
21432 | && die->parent->tag == DW_TAG_common_block) | |
21433 | attr2 = NULL; | |
21434 | ||
caac4577 JG |
21435 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21436 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21437 | && !dwarf2_per_objfile->has_section_at_zero) | |
21438 | { | |
21439 | /* When a static variable is eliminated by the linker, | |
21440 | the corresponding debug information is not stripped | |
21441 | out, but the variable address is set to null; | |
21442 | do not add such variables into symbol table. */ | |
21443 | } | |
21444 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21445 | { |
f55ee35c JK |
21446 | /* Workaround gfortran PR debug/40040 - it uses |
21447 | DW_AT_location for variables in -fPIC libraries which may | |
21448 | get overriden by other libraries/executable and get | |
21449 | a different address. Resolve it by the minimal symbol | |
21450 | which may come from inferior's executable using copy | |
21451 | relocation. Make this workaround only for gfortran as for | |
21452 | other compilers GDB cannot guess the minimal symbol | |
21453 | Fortran mangling kind. */ | |
21454 | if (cu->language == language_fortran && die->parent | |
21455 | && die->parent->tag == DW_TAG_module | |
21456 | && cu->producer | |
28586665 | 21457 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21458 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21459 | |
1c809c68 TT |
21460 | /* A variable with DW_AT_external is never static, |
21461 | but it may be block-scoped. */ | |
21462 | list_to_add = (cu->list_in_scope == &file_symbols | |
21463 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 21464 | } |
c906108c | 21465 | else |
e37fd15a | 21466 | list_to_add = cu->list_in_scope; |
c906108c SS |
21467 | } |
21468 | else | |
21469 | { | |
21470 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21471 | If it is an external symbol and we have type information |
21472 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21473 | The address of the variable will then be determined from | |
21474 | the minimal symbol table whenever the variable is | |
21475 | referenced. */ | |
e142c38c | 21476 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21477 | |
21478 | /* Fortran explicitly imports any global symbols to the local | |
21479 | scope by DW_TAG_common_block. */ | |
21480 | if (cu->language == language_fortran && die->parent | |
21481 | && die->parent->tag == DW_TAG_common_block) | |
21482 | { | |
21483 | /* SYMBOL_CLASS doesn't matter here because | |
21484 | read_common_block is going to reset it. */ | |
21485 | if (!suppress_add) | |
21486 | list_to_add = cu->list_in_scope; | |
21487 | } | |
21488 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21489 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21490 | { |
0fe7935b DJ |
21491 | /* A variable with DW_AT_external is never static, but it |
21492 | may be block-scoped. */ | |
21493 | list_to_add = (cu->list_in_scope == &file_symbols | |
21494 | ? &global_symbols : cu->list_in_scope); | |
21495 | ||
f1e6e072 | 21496 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21497 | } |
442ddf59 JK |
21498 | else if (!die_is_declaration (die, cu)) |
21499 | { | |
21500 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21501 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21502 | if (!suppress_add) |
21503 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21504 | } |
c906108c SS |
21505 | } |
21506 | break; | |
21507 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
21508 | /* If we are inside a function, mark this as an argument. If |
21509 | not, we might be looking at an argument to an inlined function | |
21510 | when we do not have enough information to show inlined frames; | |
21511 | pretend it's a local variable in that case so that the user can | |
21512 | still see it. */ | |
21513 | if (context_stack_depth > 0 | |
21514 | && context_stack[context_stack_depth - 1].name != NULL) | |
21515 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 21516 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21517 | if (attr) |
21518 | { | |
e7c27a73 | 21519 | var_decode_location (attr, sym, cu); |
c906108c | 21520 | } |
e142c38c | 21521 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21522 | if (attr) |
21523 | { | |
e7c27a73 | 21524 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21525 | } |
f346a30d | 21526 | |
e37fd15a | 21527 | list_to_add = cu->list_in_scope; |
c906108c SS |
21528 | break; |
21529 | case DW_TAG_unspecified_parameters: | |
21530 | /* From varargs functions; gdb doesn't seem to have any | |
21531 | interest in this information, so just ignore it for now. | |
21532 | (FIXME?) */ | |
21533 | break; | |
34eaf542 TT |
21534 | case DW_TAG_template_type_param: |
21535 | suppress_add = 1; | |
21536 | /* Fall through. */ | |
c906108c | 21537 | case DW_TAG_class_type: |
680b30c7 | 21538 | case DW_TAG_interface_type: |
c906108c SS |
21539 | case DW_TAG_structure_type: |
21540 | case DW_TAG_union_type: | |
72019c9c | 21541 | case DW_TAG_set_type: |
c906108c | 21542 | case DW_TAG_enumeration_type: |
f1e6e072 | 21543 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21544 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21545 | |
63d06c5c | 21546 | { |
9c37b5ae | 21547 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21548 | really ever be static objects: otherwise, if you try |
21549 | to, say, break of a class's method and you're in a file | |
21550 | which doesn't mention that class, it won't work unless | |
21551 | the check for all static symbols in lookup_symbol_aux | |
21552 | saves you. See the OtherFileClass tests in | |
21553 | gdb.c++/namespace.exp. */ | |
21554 | ||
e37fd15a | 21555 | if (!suppress_add) |
34eaf542 | 21556 | { |
34eaf542 | 21557 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21558 | && cu->language == language_cplus |
34eaf542 | 21559 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21560 | |
64382290 | 21561 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21562 | ... }" also defines a typedef for "foo". */ |
64382290 | 21563 | if (cu->language == language_cplus |
45280282 | 21564 | || cu->language == language_ada |
c44af4eb TT |
21565 | || cu->language == language_d |
21566 | || cu->language == language_rust) | |
64382290 TT |
21567 | { |
21568 | /* The symbol's name is already allocated along | |
21569 | with this objfile, so we don't need to | |
21570 | duplicate it for the type. */ | |
21571 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21572 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21573 | } | |
63d06c5c DC |
21574 | } |
21575 | } | |
c906108c SS |
21576 | break; |
21577 | case DW_TAG_typedef: | |
f1e6e072 | 21578 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21579 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21580 | list_to_add = cu->list_in_scope; |
63d06c5c | 21581 | break; |
c906108c | 21582 | case DW_TAG_base_type: |
a02abb62 | 21583 | case DW_TAG_subrange_type: |
f1e6e072 | 21584 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21585 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21586 | list_to_add = cu->list_in_scope; |
c906108c SS |
21587 | break; |
21588 | case DW_TAG_enumerator: | |
e142c38c | 21589 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21590 | if (attr) |
21591 | { | |
e7c27a73 | 21592 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21593 | } |
63d06c5c DC |
21594 | { |
21595 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21596 | DW_TAG_class_type, etc. block. */ | |
21597 | ||
e142c38c | 21598 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21599 | && cu->language == language_cplus |
e142c38c | 21600 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21601 | } |
c906108c | 21602 | break; |
74921315 | 21603 | case DW_TAG_imported_declaration: |
5c4e30ca | 21604 | case DW_TAG_namespace: |
f1e6e072 | 21605 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 21606 | list_to_add = &global_symbols; |
5c4e30ca | 21607 | break; |
530e8392 KB |
21608 | case DW_TAG_module: |
21609 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21610 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
21611 | list_to_add = &global_symbols; | |
21612 | break; | |
4357ac6c | 21613 | case DW_TAG_common_block: |
f1e6e072 | 21614 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
21615 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
21616 | add_symbol_to_list (sym, cu->list_in_scope); | |
21617 | break; | |
c906108c SS |
21618 | default: |
21619 | /* Not a tag we recognize. Hopefully we aren't processing | |
21620 | trash data, but since we must specifically ignore things | |
21621 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21622 | this point. */ |
e2e0b3e5 | 21623 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 21624 | dwarf_tag_name (die->tag)); |
c906108c SS |
21625 | break; |
21626 | } | |
df8a16a1 | 21627 | |
e37fd15a SW |
21628 | if (suppress_add) |
21629 | { | |
21630 | sym->hash_next = objfile->template_symbols; | |
21631 | objfile->template_symbols = sym; | |
21632 | list_to_add = NULL; | |
21633 | } | |
21634 | ||
21635 | if (list_to_add != NULL) | |
21636 | add_symbol_to_list (sym, list_to_add); | |
21637 | ||
df8a16a1 DJ |
21638 | /* For the benefit of old versions of GCC, check for anonymous |
21639 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21640 | if (!cu->processing_has_namespace_info |
94af9270 | 21641 | && cu->language == language_cplus) |
a10964d1 | 21642 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
21643 | } |
21644 | return (sym); | |
21645 | } | |
21646 | ||
98bfdba5 PA |
21647 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21648 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21649 | standard (v4) is not entirely clear about the meaning of using | |
21650 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21651 | wider than the data. The conclusion of a discussion on the DWARF | |
21652 | list was that this is unspecified. We choose to always zero-extend | |
21653 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21654 | |
98bfdba5 | 21655 | static gdb_byte * |
ff39bb5e | 21656 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21657 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21658 | { |
518817b3 | 21659 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21660 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21661 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21662 | LONGEST l = DW_UNSND (attr); |
21663 | ||
21664 | if (bits < sizeof (*value) * 8) | |
21665 | { | |
21666 | l &= ((LONGEST) 1 << bits) - 1; | |
21667 | *value = l; | |
21668 | } | |
21669 | else if (bits == sizeof (*value) * 8) | |
21670 | *value = l; | |
21671 | else | |
21672 | { | |
224c3ddb | 21673 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21674 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21675 | return bytes; | |
21676 | } | |
21677 | ||
21678 | return NULL; | |
21679 | } | |
21680 | ||
21681 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21682 | the value does not fit in *VALUE, set *BYTES - either already | |
21683 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21684 | or, set *BATON, if we translated the constant to a location | |
21685 | expression. */ | |
21686 | ||
21687 | static void | |
ff39bb5e | 21688 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21689 | const char *name, struct obstack *obstack, |
21690 | struct dwarf2_cu *cu, | |
d521ce57 | 21691 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21692 | struct dwarf2_locexpr_baton **baton) |
21693 | { | |
518817b3 | 21694 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21695 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21696 | struct dwarf_block *blk; |
98bfdba5 PA |
21697 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21698 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21699 | ||
21700 | *value = 0; | |
21701 | *bytes = NULL; | |
21702 | *baton = NULL; | |
c906108c SS |
21703 | |
21704 | switch (attr->form) | |
21705 | { | |
21706 | case DW_FORM_addr: | |
3019eac3 | 21707 | case DW_FORM_GNU_addr_index: |
ac56253d | 21708 | { |
ac56253d TT |
21709 | gdb_byte *data; |
21710 | ||
98bfdba5 PA |
21711 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21712 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21713 | cu_header->addr_size, |
98bfdba5 | 21714 | TYPE_LENGTH (type)); |
ac56253d TT |
21715 | /* Symbols of this form are reasonably rare, so we just |
21716 | piggyback on the existing location code rather than writing | |
21717 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21718 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21719 | (*baton)->per_cu = cu->per_cu; |
21720 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21721 | |
98bfdba5 | 21722 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21723 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21724 | (*baton)->data = data; |
ac56253d TT |
21725 | |
21726 | data[0] = DW_OP_addr; | |
21727 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21728 | byte_order, DW_ADDR (attr)); | |
21729 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21730 | } |
c906108c | 21731 | break; |
4ac36638 | 21732 | case DW_FORM_string: |
93b5768b | 21733 | case DW_FORM_strp: |
3019eac3 | 21734 | case DW_FORM_GNU_str_index: |
36586728 | 21735 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21736 | /* DW_STRING is already allocated on the objfile obstack, point |
21737 | directly to it. */ | |
d521ce57 | 21738 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21739 | break; |
c906108c SS |
21740 | case DW_FORM_block1: |
21741 | case DW_FORM_block2: | |
21742 | case DW_FORM_block4: | |
21743 | case DW_FORM_block: | |
2dc7f7b3 | 21744 | case DW_FORM_exprloc: |
0224619f | 21745 | case DW_FORM_data16: |
c906108c | 21746 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21747 | if (TYPE_LENGTH (type) != blk->size) |
21748 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21749 | TYPE_LENGTH (type)); | |
21750 | *bytes = blk->data; | |
c906108c | 21751 | break; |
2df3850c JM |
21752 | |
21753 | /* The DW_AT_const_value attributes are supposed to carry the | |
21754 | symbol's value "represented as it would be on the target | |
21755 | architecture." By the time we get here, it's already been | |
21756 | converted to host endianness, so we just need to sign- or | |
21757 | zero-extend it as appropriate. */ | |
21758 | case DW_FORM_data1: | |
3aef2284 | 21759 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21760 | break; |
c906108c | 21761 | case DW_FORM_data2: |
3aef2284 | 21762 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21763 | break; |
c906108c | 21764 | case DW_FORM_data4: |
3aef2284 | 21765 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21766 | break; |
c906108c | 21767 | case DW_FORM_data8: |
3aef2284 | 21768 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21769 | break; |
21770 | ||
c906108c | 21771 | case DW_FORM_sdata: |
663c44ac | 21772 | case DW_FORM_implicit_const: |
98bfdba5 | 21773 | *value = DW_SND (attr); |
2df3850c JM |
21774 | break; |
21775 | ||
c906108c | 21776 | case DW_FORM_udata: |
98bfdba5 | 21777 | *value = DW_UNSND (attr); |
c906108c | 21778 | break; |
2df3850c | 21779 | |
c906108c | 21780 | default: |
4d3c2250 | 21781 | complaint (&symfile_complaints, |
e2e0b3e5 | 21782 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21783 | dwarf_form_name (attr->form)); |
98bfdba5 | 21784 | *value = 0; |
c906108c SS |
21785 | break; |
21786 | } | |
21787 | } | |
21788 | ||
2df3850c | 21789 | |
98bfdba5 PA |
21790 | /* Copy constant value from an attribute to a symbol. */ |
21791 | ||
2df3850c | 21792 | static void |
ff39bb5e | 21793 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21794 | struct dwarf2_cu *cu) |
2df3850c | 21795 | { |
518817b3 | 21796 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21797 | LONGEST value; |
d521ce57 | 21798 | const gdb_byte *bytes; |
98bfdba5 | 21799 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21800 | |
98bfdba5 PA |
21801 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21802 | SYMBOL_PRINT_NAME (sym), | |
21803 | &objfile->objfile_obstack, cu, | |
21804 | &value, &bytes, &baton); | |
2df3850c | 21805 | |
98bfdba5 PA |
21806 | if (baton != NULL) |
21807 | { | |
98bfdba5 | 21808 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21809 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21810 | } |
21811 | else if (bytes != NULL) | |
21812 | { | |
21813 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21814 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21815 | } |
21816 | else | |
21817 | { | |
21818 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21819 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21820 | } |
2df3850c JM |
21821 | } |
21822 | ||
c906108c SS |
21823 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21824 | ||
21825 | static struct type * | |
e7c27a73 | 21826 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21827 | { |
c906108c | 21828 | struct attribute *type_attr; |
c906108c | 21829 | |
e142c38c | 21830 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21831 | if (!type_attr) |
21832 | { | |
518817b3 | 21833 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21834 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21835 | return objfile_type (objfile)->builtin_void; |
c906108c | 21836 | } |
348e048f | 21837 | |
673bfd45 | 21838 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21839 | } |
21840 | ||
b4ba55a1 JB |
21841 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21842 | that allows to find parallel types through that information instead | |
21843 | of having to do expensive parallel lookups by type name. */ | |
21844 | ||
21845 | static int | |
21846 | need_gnat_info (struct dwarf2_cu *cu) | |
21847 | { | |
de4cb04a JB |
21848 | /* Assume that the Ada compiler was GNAT, which always produces |
21849 | the auxiliary information. */ | |
21850 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21851 | } |
21852 | ||
b4ba55a1 JB |
21853 | /* Return the auxiliary type of the die in question using its |
21854 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21855 | attribute is not present. */ | |
21856 | ||
21857 | static struct type * | |
21858 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21859 | { | |
b4ba55a1 | 21860 | struct attribute *type_attr; |
b4ba55a1 JB |
21861 | |
21862 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21863 | if (!type_attr) | |
21864 | return NULL; | |
21865 | ||
673bfd45 | 21866 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21867 | } |
21868 | ||
21869 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21870 | descriptive type accordingly. */ | |
21871 | ||
21872 | static void | |
21873 | set_descriptive_type (struct type *type, struct die_info *die, | |
21874 | struct dwarf2_cu *cu) | |
21875 | { | |
21876 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21877 | ||
21878 | if (descriptive_type) | |
21879 | { | |
21880 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21881 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21882 | } | |
21883 | } | |
21884 | ||
c906108c SS |
21885 | /* Return the containing type of the die in question using its |
21886 | DW_AT_containing_type attribute. */ | |
21887 | ||
21888 | static struct type * | |
e7c27a73 | 21889 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21890 | { |
c906108c | 21891 | struct attribute *type_attr; |
518817b3 | 21892 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21893 | |
e142c38c | 21894 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21895 | if (!type_attr) |
21896 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21897 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21898 | |
673bfd45 | 21899 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21900 | } |
21901 | ||
ac9ec31b DE |
21902 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21903 | ||
21904 | static struct type * | |
21905 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21906 | { | |
518817b3 SM |
21907 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21908 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
21909 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
21910 | char *message, *saved; | |
21911 | ||
21912 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 21913 | objfile_name (objfile), |
9c541725 PA |
21914 | to_underlying (cu->header.sect_off), |
21915 | to_underlying (die->sect_off)); | |
224c3ddb SM |
21916 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
21917 | message, strlen (message)); | |
ac9ec31b DE |
21918 | xfree (message); |
21919 | ||
19f392bc | 21920 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21921 | } |
21922 | ||
673bfd45 | 21923 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21924 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21925 | DW_AT_containing_type. | |
673bfd45 DE |
21926 | If there is no type substitute an error marker. */ |
21927 | ||
c906108c | 21928 | static struct type * |
ff39bb5e | 21929 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21930 | struct dwarf2_cu *cu) |
c906108c | 21931 | { |
518817b3 SM |
21932 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21933 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21934 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21935 | struct type *this_type; |
21936 | ||
ac9ec31b DE |
21937 | gdb_assert (attr->name == DW_AT_type |
21938 | || attr->name == DW_AT_GNAT_descriptive_type | |
21939 | || attr->name == DW_AT_containing_type); | |
21940 | ||
673bfd45 DE |
21941 | /* First see if we have it cached. */ |
21942 | ||
36586728 TT |
21943 | if (attr->form == DW_FORM_GNU_ref_alt) |
21944 | { | |
21945 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21946 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21947 | |
ed2dc618 SM |
21948 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21949 | dwarf2_per_objfile); | |
9c541725 | 21950 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21951 | } |
7771576e | 21952 | else if (attr_form_is_ref (attr)) |
673bfd45 | 21953 | { |
9c541725 | 21954 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21955 | |
9c541725 | 21956 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21957 | } |
55f1336d | 21958 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21959 | { |
ac9ec31b | 21960 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21961 | |
ac9ec31b | 21962 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21963 | } |
21964 | else | |
21965 | { | |
ac9ec31b DE |
21966 | complaint (&symfile_complaints, |
21967 | _("Dwarf Error: Bad type attribute %s in DIE" | |
21968 | " at 0x%x [in module %s]"), | |
9c541725 | 21969 | dwarf_attr_name (attr->name), to_underlying (die->sect_off), |
4262abfb | 21970 | objfile_name (objfile)); |
ac9ec31b | 21971 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21972 | } |
21973 | ||
21974 | /* If not cached we need to read it in. */ | |
21975 | ||
21976 | if (this_type == NULL) | |
21977 | { | |
ac9ec31b | 21978 | struct die_info *type_die = NULL; |
673bfd45 DE |
21979 | struct dwarf2_cu *type_cu = cu; |
21980 | ||
7771576e | 21981 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
21982 | type_die = follow_die_ref (die, attr, &type_cu); |
21983 | if (type_die == NULL) | |
21984 | return build_error_marker_type (cu, die); | |
21985 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21986 | from an inter-CU reference and the type's CU got expanded before |
21987 | ours. */ | |
ac9ec31b | 21988 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21989 | } |
21990 | ||
21991 | /* If we still don't have a type use an error marker. */ | |
21992 | ||
21993 | if (this_type == NULL) | |
ac9ec31b | 21994 | return build_error_marker_type (cu, die); |
673bfd45 | 21995 | |
f792889a | 21996 | return this_type; |
c906108c SS |
21997 | } |
21998 | ||
673bfd45 DE |
21999 | /* Return the type in DIE, CU. |
22000 | Returns NULL for invalid types. | |
22001 | ||
02142a6c | 22002 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22003 | and only reads the die in if necessary. |
22004 | ||
22005 | NOTE: This can be called when reading in partial or full symbols. */ | |
22006 | ||
f792889a | 22007 | static struct type * |
e7c27a73 | 22008 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22009 | { |
f792889a DJ |
22010 | struct type *this_type; |
22011 | ||
22012 | this_type = get_die_type (die, cu); | |
22013 | if (this_type) | |
22014 | return this_type; | |
22015 | ||
673bfd45 DE |
22016 | return read_type_die_1 (die, cu); |
22017 | } | |
22018 | ||
22019 | /* Read the type in DIE, CU. | |
22020 | Returns NULL for invalid types. */ | |
22021 | ||
22022 | static struct type * | |
22023 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22024 | { | |
22025 | struct type *this_type = NULL; | |
22026 | ||
c906108c SS |
22027 | switch (die->tag) |
22028 | { | |
22029 | case DW_TAG_class_type: | |
680b30c7 | 22030 | case DW_TAG_interface_type: |
c906108c SS |
22031 | case DW_TAG_structure_type: |
22032 | case DW_TAG_union_type: | |
f792889a | 22033 | this_type = read_structure_type (die, cu); |
c906108c SS |
22034 | break; |
22035 | case DW_TAG_enumeration_type: | |
f792889a | 22036 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22037 | break; |
22038 | case DW_TAG_subprogram: | |
22039 | case DW_TAG_subroutine_type: | |
edb3359d | 22040 | case DW_TAG_inlined_subroutine: |
f792889a | 22041 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22042 | break; |
22043 | case DW_TAG_array_type: | |
f792889a | 22044 | this_type = read_array_type (die, cu); |
c906108c | 22045 | break; |
72019c9c | 22046 | case DW_TAG_set_type: |
f792889a | 22047 | this_type = read_set_type (die, cu); |
72019c9c | 22048 | break; |
c906108c | 22049 | case DW_TAG_pointer_type: |
f792889a | 22050 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22051 | break; |
22052 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22053 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22054 | break; |
22055 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22056 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22057 | break; | |
22058 | case DW_TAG_rvalue_reference_type: | |
22059 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22060 | break; |
22061 | case DW_TAG_const_type: | |
f792889a | 22062 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22063 | break; |
22064 | case DW_TAG_volatile_type: | |
f792889a | 22065 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22066 | break; |
06d66ee9 TT |
22067 | case DW_TAG_restrict_type: |
22068 | this_type = read_tag_restrict_type (die, cu); | |
22069 | break; | |
c906108c | 22070 | case DW_TAG_string_type: |
f792889a | 22071 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22072 | break; |
22073 | case DW_TAG_typedef: | |
f792889a | 22074 | this_type = read_typedef (die, cu); |
c906108c | 22075 | break; |
a02abb62 | 22076 | case DW_TAG_subrange_type: |
f792889a | 22077 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22078 | break; |
c906108c | 22079 | case DW_TAG_base_type: |
f792889a | 22080 | this_type = read_base_type (die, cu); |
c906108c | 22081 | break; |
81a17f79 | 22082 | case DW_TAG_unspecified_type: |
f792889a | 22083 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22084 | break; |
0114d602 DJ |
22085 | case DW_TAG_namespace: |
22086 | this_type = read_namespace_type (die, cu); | |
22087 | break; | |
f55ee35c JK |
22088 | case DW_TAG_module: |
22089 | this_type = read_module_type (die, cu); | |
22090 | break; | |
a2c2acaf MW |
22091 | case DW_TAG_atomic_type: |
22092 | this_type = read_tag_atomic_type (die, cu); | |
22093 | break; | |
c906108c | 22094 | default: |
3e43a32a MS |
22095 | complaint (&symfile_complaints, |
22096 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 22097 | dwarf_tag_name (die->tag)); |
c906108c SS |
22098 | break; |
22099 | } | |
63d06c5c | 22100 | |
f792889a | 22101 | return this_type; |
63d06c5c DC |
22102 | } |
22103 | ||
abc72ce4 DE |
22104 | /* See if we can figure out if the class lives in a namespace. We do |
22105 | this by looking for a member function; its demangled name will | |
22106 | contain namespace info, if there is any. | |
22107 | Return the computed name or NULL. | |
22108 | Space for the result is allocated on the objfile's obstack. | |
22109 | This is the full-die version of guess_partial_die_structure_name. | |
22110 | In this case we know DIE has no useful parent. */ | |
22111 | ||
22112 | static char * | |
22113 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22114 | { | |
22115 | struct die_info *spec_die; | |
22116 | struct dwarf2_cu *spec_cu; | |
22117 | struct die_info *child; | |
518817b3 | 22118 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22119 | |
22120 | spec_cu = cu; | |
22121 | spec_die = die_specification (die, &spec_cu); | |
22122 | if (spec_die != NULL) | |
22123 | { | |
22124 | die = spec_die; | |
22125 | cu = spec_cu; | |
22126 | } | |
22127 | ||
22128 | for (child = die->child; | |
22129 | child != NULL; | |
22130 | child = child->sibling) | |
22131 | { | |
22132 | if (child->tag == DW_TAG_subprogram) | |
22133 | { | |
73b9be8b | 22134 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22135 | |
7d45c7c3 | 22136 | if (linkage_name != NULL) |
abc72ce4 DE |
22137 | { |
22138 | char *actual_name | |
22139 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22140 | linkage_name); |
abc72ce4 DE |
22141 | char *name = NULL; |
22142 | ||
22143 | if (actual_name != NULL) | |
22144 | { | |
15d034d0 | 22145 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22146 | |
22147 | if (die_name != NULL | |
22148 | && strcmp (die_name, actual_name) != 0) | |
22149 | { | |
22150 | /* Strip off the class name from the full name. | |
22151 | We want the prefix. */ | |
22152 | int die_name_len = strlen (die_name); | |
22153 | int actual_name_len = strlen (actual_name); | |
22154 | ||
22155 | /* Test for '::' as a sanity check. */ | |
22156 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22157 | && actual_name[actual_name_len |
22158 | - die_name_len - 1] == ':') | |
224c3ddb | 22159 | name = (char *) obstack_copy0 ( |
e3b94546 | 22160 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22161 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22162 | } |
22163 | } | |
22164 | xfree (actual_name); | |
22165 | return name; | |
22166 | } | |
22167 | } | |
22168 | } | |
22169 | ||
22170 | return NULL; | |
22171 | } | |
22172 | ||
96408a79 SA |
22173 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22174 | prefix part in such case. See | |
22175 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22176 | ||
a121b7c1 | 22177 | static const char * |
96408a79 SA |
22178 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22179 | { | |
22180 | struct attribute *attr; | |
e6a959d6 | 22181 | const char *base; |
96408a79 SA |
22182 | |
22183 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22184 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22185 | return NULL; | |
22186 | ||
7d45c7c3 | 22187 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22188 | return NULL; |
22189 | ||
73b9be8b | 22190 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22191 | if (attr == NULL || DW_STRING (attr) == NULL) |
22192 | return NULL; | |
22193 | ||
22194 | /* dwarf2_name had to be already called. */ | |
22195 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22196 | ||
22197 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22198 | base = strrchr (DW_STRING (attr), ':'); | |
22199 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22200 | return ""; | |
22201 | ||
518817b3 | 22202 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22203 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22204 | DW_STRING (attr), |
22205 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22206 | } |
22207 | ||
fdde2d81 | 22208 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22209 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22210 | |
0114d602 DJ |
22211 | For example, if we're within the method foo() in the following |
22212 | code: | |
22213 | ||
22214 | namespace N { | |
22215 | class C { | |
22216 | void foo () { | |
22217 | } | |
22218 | }; | |
22219 | } | |
22220 | ||
22221 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22222 | |
0d5cff50 | 22223 | static const char * |
e142c38c | 22224 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22225 | { |
518817b3 SM |
22226 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22227 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22228 | struct die_info *parent, *spec_die; |
22229 | struct dwarf2_cu *spec_cu; | |
22230 | struct type *parent_type; | |
a121b7c1 | 22231 | const char *retval; |
63d06c5c | 22232 | |
9c37b5ae | 22233 | if (cu->language != language_cplus |
c44af4eb TT |
22234 | && cu->language != language_fortran && cu->language != language_d |
22235 | && cu->language != language_rust) | |
0114d602 DJ |
22236 | return ""; |
22237 | ||
96408a79 SA |
22238 | retval = anonymous_struct_prefix (die, cu); |
22239 | if (retval) | |
22240 | return retval; | |
22241 | ||
0114d602 DJ |
22242 | /* We have to be careful in the presence of DW_AT_specification. |
22243 | For example, with GCC 3.4, given the code | |
22244 | ||
22245 | namespace N { | |
22246 | void foo() { | |
22247 | // Definition of N::foo. | |
22248 | } | |
22249 | } | |
22250 | ||
22251 | then we'll have a tree of DIEs like this: | |
22252 | ||
22253 | 1: DW_TAG_compile_unit | |
22254 | 2: DW_TAG_namespace // N | |
22255 | 3: DW_TAG_subprogram // declaration of N::foo | |
22256 | 4: DW_TAG_subprogram // definition of N::foo | |
22257 | DW_AT_specification // refers to die #3 | |
22258 | ||
22259 | Thus, when processing die #4, we have to pretend that we're in | |
22260 | the context of its DW_AT_specification, namely the contex of die | |
22261 | #3. */ | |
22262 | spec_cu = cu; | |
22263 | spec_die = die_specification (die, &spec_cu); | |
22264 | if (spec_die == NULL) | |
22265 | parent = die->parent; | |
22266 | else | |
63d06c5c | 22267 | { |
0114d602 DJ |
22268 | parent = spec_die->parent; |
22269 | cu = spec_cu; | |
63d06c5c | 22270 | } |
0114d602 DJ |
22271 | |
22272 | if (parent == NULL) | |
22273 | return ""; | |
98bfdba5 PA |
22274 | else if (parent->building_fullname) |
22275 | { | |
22276 | const char *name; | |
22277 | const char *parent_name; | |
22278 | ||
22279 | /* It has been seen on RealView 2.2 built binaries, | |
22280 | DW_TAG_template_type_param types actually _defined_ as | |
22281 | children of the parent class: | |
22282 | ||
22283 | enum E {}; | |
22284 | template class <class Enum> Class{}; | |
22285 | Class<enum E> class_e; | |
22286 | ||
22287 | 1: DW_TAG_class_type (Class) | |
22288 | 2: DW_TAG_enumeration_type (E) | |
22289 | 3: DW_TAG_enumerator (enum1:0) | |
22290 | 3: DW_TAG_enumerator (enum2:1) | |
22291 | ... | |
22292 | 2: DW_TAG_template_type_param | |
22293 | DW_AT_type DW_FORM_ref_udata (E) | |
22294 | ||
22295 | Besides being broken debug info, it can put GDB into an | |
22296 | infinite loop. Consider: | |
22297 | ||
22298 | When we're building the full name for Class<E>, we'll start | |
22299 | at Class, and go look over its template type parameters, | |
22300 | finding E. We'll then try to build the full name of E, and | |
22301 | reach here. We're now trying to build the full name of E, | |
22302 | and look over the parent DIE for containing scope. In the | |
22303 | broken case, if we followed the parent DIE of E, we'd again | |
22304 | find Class, and once again go look at its template type | |
22305 | arguments, etc., etc. Simply don't consider such parent die | |
22306 | as source-level parent of this die (it can't be, the language | |
22307 | doesn't allow it), and break the loop here. */ | |
22308 | name = dwarf2_name (die, cu); | |
22309 | parent_name = dwarf2_name (parent, cu); | |
22310 | complaint (&symfile_complaints, | |
22311 | _("template param type '%s' defined within parent '%s'"), | |
22312 | name ? name : "<unknown>", | |
22313 | parent_name ? parent_name : "<unknown>"); | |
22314 | return ""; | |
22315 | } | |
63d06c5c | 22316 | else |
0114d602 DJ |
22317 | switch (parent->tag) |
22318 | { | |
63d06c5c | 22319 | case DW_TAG_namespace: |
0114d602 | 22320 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22321 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22322 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22323 | Work around this problem here. */ | |
22324 | if (cu->language == language_cplus | |
22325 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
22326 | return ""; | |
0114d602 DJ |
22327 | /* We give a name to even anonymous namespaces. */ |
22328 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 22329 | case DW_TAG_class_type: |
680b30c7 | 22330 | case DW_TAG_interface_type: |
63d06c5c | 22331 | case DW_TAG_structure_type: |
0114d602 | 22332 | case DW_TAG_union_type: |
f55ee35c | 22333 | case DW_TAG_module: |
0114d602 DJ |
22334 | parent_type = read_type_die (parent, cu); |
22335 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22336 | return TYPE_TAG_NAME (parent_type); | |
22337 | else | |
22338 | /* An anonymous structure is only allowed non-static data | |
22339 | members; no typedefs, no member functions, et cetera. | |
22340 | So it does not need a prefix. */ | |
22341 | return ""; | |
abc72ce4 | 22342 | case DW_TAG_compile_unit: |
95554aad | 22343 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22344 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22345 | if (cu->language == language_cplus | |
8b70b953 | 22346 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22347 | && die->child != NULL |
22348 | && (die->tag == DW_TAG_class_type | |
22349 | || die->tag == DW_TAG_structure_type | |
22350 | || die->tag == DW_TAG_union_type)) | |
22351 | { | |
22352 | char *name = guess_full_die_structure_name (die, cu); | |
22353 | if (name != NULL) | |
22354 | return name; | |
22355 | } | |
22356 | return ""; | |
3d567982 TT |
22357 | case DW_TAG_enumeration_type: |
22358 | parent_type = read_type_die (parent, cu); | |
22359 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22360 | { | |
22361 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22362 | return TYPE_TAG_NAME (parent_type); | |
22363 | return ""; | |
22364 | } | |
22365 | /* Fall through. */ | |
63d06c5c | 22366 | default: |
8176b9b8 | 22367 | return determine_prefix (parent, cu); |
63d06c5c | 22368 | } |
63d06c5c DC |
22369 | } |
22370 | ||
3e43a32a MS |
22371 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22372 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22373 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22374 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22375 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22376 | |
f55ee35c | 22377 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22378 | |
22379 | static char * | |
f55ee35c JK |
22380 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22381 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22382 | { |
f55ee35c | 22383 | const char *lead = ""; |
5c315b68 | 22384 | const char *sep; |
63d06c5c | 22385 | |
3e43a32a MS |
22386 | if (suffix == NULL || suffix[0] == '\0' |
22387 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22388 | sep = ""; |
45280282 IB |
22389 | else if (cu->language == language_d) |
22390 | { | |
22391 | /* For D, the 'main' function could be defined in any module, but it | |
22392 | should never be prefixed. */ | |
22393 | if (strcmp (suffix, "D main") == 0) | |
22394 | { | |
22395 | prefix = ""; | |
22396 | sep = ""; | |
22397 | } | |
22398 | else | |
22399 | sep = "."; | |
22400 | } | |
f55ee35c JK |
22401 | else if (cu->language == language_fortran && physname) |
22402 | { | |
22403 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22404 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22405 | ||
22406 | lead = "__"; | |
22407 | sep = "_MOD_"; | |
22408 | } | |
987504bb JJ |
22409 | else |
22410 | sep = "::"; | |
63d06c5c | 22411 | |
6dd47d34 DE |
22412 | if (prefix == NULL) |
22413 | prefix = ""; | |
22414 | if (suffix == NULL) | |
22415 | suffix = ""; | |
22416 | ||
987504bb JJ |
22417 | if (obs == NULL) |
22418 | { | |
3e43a32a | 22419 | char *retval |
224c3ddb SM |
22420 | = ((char *) |
22421 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22422 | |
f55ee35c JK |
22423 | strcpy (retval, lead); |
22424 | strcat (retval, prefix); | |
6dd47d34 DE |
22425 | strcat (retval, sep); |
22426 | strcat (retval, suffix); | |
63d06c5c DC |
22427 | return retval; |
22428 | } | |
987504bb JJ |
22429 | else |
22430 | { | |
22431 | /* We have an obstack. */ | |
f55ee35c | 22432 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22433 | } |
63d06c5c DC |
22434 | } |
22435 | ||
c906108c SS |
22436 | /* Return sibling of die, NULL if no sibling. */ |
22437 | ||
f9aca02d | 22438 | static struct die_info * |
fba45db2 | 22439 | sibling_die (struct die_info *die) |
c906108c | 22440 | { |
639d11d3 | 22441 | return die->sibling; |
c906108c SS |
22442 | } |
22443 | ||
71c25dea TT |
22444 | /* Get name of a die, return NULL if not found. */ |
22445 | ||
15d034d0 TT |
22446 | static const char * |
22447 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22448 | struct obstack *obstack) |
22449 | { | |
22450 | if (name && cu->language == language_cplus) | |
22451 | { | |
2f408ecb | 22452 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22453 | |
2f408ecb | 22454 | if (!canon_name.empty ()) |
71c25dea | 22455 | { |
2f408ecb PA |
22456 | if (canon_name != name) |
22457 | name = (const char *) obstack_copy0 (obstack, | |
22458 | canon_name.c_str (), | |
22459 | canon_name.length ()); | |
71c25dea TT |
22460 | } |
22461 | } | |
22462 | ||
22463 | return name; | |
c906108c SS |
22464 | } |
22465 | ||
96553a0c DE |
22466 | /* Get name of a die, return NULL if not found. |
22467 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22468 | |
15d034d0 | 22469 | static const char * |
e142c38c | 22470 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22471 | { |
22472 | struct attribute *attr; | |
518817b3 | 22473 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22474 | |
e142c38c | 22475 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22476 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22477 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22478 | && die->tag != DW_TAG_class_type |
22479 | && die->tag != DW_TAG_interface_type | |
22480 | && die->tag != DW_TAG_structure_type | |
22481 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22482 | return NULL; |
22483 | ||
22484 | switch (die->tag) | |
22485 | { | |
22486 | case DW_TAG_compile_unit: | |
95554aad | 22487 | case DW_TAG_partial_unit: |
71c25dea TT |
22488 | /* Compilation units have a DW_AT_name that is a filename, not |
22489 | a source language identifier. */ | |
22490 | case DW_TAG_enumeration_type: | |
22491 | case DW_TAG_enumerator: | |
22492 | /* These tags always have simple identifiers already; no need | |
22493 | to canonicalize them. */ | |
22494 | return DW_STRING (attr); | |
907af001 | 22495 | |
96553a0c DE |
22496 | case DW_TAG_namespace: |
22497 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22498 | return DW_STRING (attr); | |
22499 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22500 | ||
907af001 UW |
22501 | case DW_TAG_class_type: |
22502 | case DW_TAG_interface_type: | |
22503 | case DW_TAG_structure_type: | |
22504 | case DW_TAG_union_type: | |
22505 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22506 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22507 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22508 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22509 | if (attr && DW_STRING (attr) |
61012eef GB |
22510 | && (startswith (DW_STRING (attr), "._") |
22511 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22512 | return NULL; |
53832f31 TT |
22513 | |
22514 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22515 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22516 | if (!attr || DW_STRING (attr) == NULL) | |
22517 | { | |
df5c6c50 | 22518 | char *demangled = NULL; |
53832f31 | 22519 | |
73b9be8b | 22520 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22521 | if (attr == NULL || DW_STRING (attr) == NULL) |
22522 | return NULL; | |
22523 | ||
df5c6c50 JK |
22524 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22525 | call for the same DIE. */ | |
22526 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22527 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22528 | |
22529 | if (demangled) | |
22530 | { | |
e6a959d6 | 22531 | const char *base; |
96408a79 | 22532 | |
53832f31 | 22533 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22534 | DW_STRING (attr) |
224c3ddb | 22535 | = ((const char *) |
e3b94546 | 22536 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22537 | demangled, strlen (demangled))); |
53832f31 TT |
22538 | DW_STRING_IS_CANONICAL (attr) = 1; |
22539 | xfree (demangled); | |
96408a79 SA |
22540 | |
22541 | /* Strip any leading namespaces/classes, keep only the base name. | |
22542 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22543 | base = strrchr (DW_STRING (attr), ':'); | |
22544 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22545 | return &base[1]; | |
22546 | else | |
22547 | return DW_STRING (attr); | |
53832f31 TT |
22548 | } |
22549 | } | |
907af001 UW |
22550 | break; |
22551 | ||
71c25dea | 22552 | default: |
907af001 UW |
22553 | break; |
22554 | } | |
22555 | ||
22556 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22557 | { | |
22558 | DW_STRING (attr) | |
22559 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22560 | &objfile->per_bfd->storage_obstack); |
907af001 | 22561 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22562 | } |
907af001 | 22563 | return DW_STRING (attr); |
9219021c DC |
22564 | } |
22565 | ||
22566 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22567 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22568 | containing the return value on output. */ | |
9219021c DC |
22569 | |
22570 | static struct die_info * | |
f2f0e013 | 22571 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22572 | { |
22573 | struct attribute *attr; | |
9219021c | 22574 | |
f2f0e013 | 22575 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22576 | if (attr == NULL) |
22577 | return NULL; | |
22578 | ||
f2f0e013 | 22579 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22580 | } |
22581 | ||
c906108c SS |
22582 | /* Convert a DIE tag into its string name. */ |
22583 | ||
f39c6ffd | 22584 | static const char * |
aa1ee363 | 22585 | dwarf_tag_name (unsigned tag) |
c906108c | 22586 | { |
f39c6ffd TT |
22587 | const char *name = get_DW_TAG_name (tag); |
22588 | ||
22589 | if (name == NULL) | |
22590 | return "DW_TAG_<unknown>"; | |
22591 | ||
22592 | return name; | |
c906108c SS |
22593 | } |
22594 | ||
22595 | /* Convert a DWARF attribute code into its string name. */ | |
22596 | ||
f39c6ffd | 22597 | static const char * |
aa1ee363 | 22598 | dwarf_attr_name (unsigned attr) |
c906108c | 22599 | { |
f39c6ffd TT |
22600 | const char *name; |
22601 | ||
c764a876 | 22602 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22603 | if (attr == DW_AT_MIPS_fde) |
22604 | return "DW_AT_MIPS_fde"; | |
22605 | #else | |
22606 | if (attr == DW_AT_HP_block_index) | |
22607 | return "DW_AT_HP_block_index"; | |
c764a876 | 22608 | #endif |
f39c6ffd TT |
22609 | |
22610 | name = get_DW_AT_name (attr); | |
22611 | ||
22612 | if (name == NULL) | |
22613 | return "DW_AT_<unknown>"; | |
22614 | ||
22615 | return name; | |
c906108c SS |
22616 | } |
22617 | ||
22618 | /* Convert a DWARF value form code into its string name. */ | |
22619 | ||
f39c6ffd | 22620 | static const char * |
aa1ee363 | 22621 | dwarf_form_name (unsigned form) |
c906108c | 22622 | { |
f39c6ffd TT |
22623 | const char *name = get_DW_FORM_name (form); |
22624 | ||
22625 | if (name == NULL) | |
22626 | return "DW_FORM_<unknown>"; | |
22627 | ||
22628 | return name; | |
c906108c SS |
22629 | } |
22630 | ||
a121b7c1 | 22631 | static const char * |
fba45db2 | 22632 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22633 | { |
22634 | if (mybool) | |
22635 | return "TRUE"; | |
22636 | else | |
22637 | return "FALSE"; | |
22638 | } | |
22639 | ||
22640 | /* Convert a DWARF type code into its string name. */ | |
22641 | ||
f39c6ffd | 22642 | static const char * |
aa1ee363 | 22643 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22644 | { |
f39c6ffd | 22645 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22646 | |
f39c6ffd TT |
22647 | if (name == NULL) |
22648 | return "DW_ATE_<unknown>"; | |
c906108c | 22649 | |
f39c6ffd | 22650 | return name; |
c906108c | 22651 | } |
c906108c | 22652 | |
f9aca02d | 22653 | static void |
d97bc12b | 22654 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22655 | { |
22656 | unsigned int i; | |
22657 | ||
d97bc12b DE |
22658 | print_spaces (indent, f); |
22659 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
9c541725 PA |
22660 | dwarf_tag_name (die->tag), die->abbrev, |
22661 | to_underlying (die->sect_off)); | |
d97bc12b DE |
22662 | |
22663 | if (die->parent != NULL) | |
22664 | { | |
22665 | print_spaces (indent, f); | |
22666 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
9c541725 | 22667 | to_underlying (die->parent->sect_off)); |
d97bc12b DE |
22668 | } |
22669 | ||
22670 | print_spaces (indent, f); | |
22671 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22672 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22673 | |
d97bc12b DE |
22674 | print_spaces (indent, f); |
22675 | fprintf_unfiltered (f, " attributes:\n"); | |
22676 | ||
c906108c SS |
22677 | for (i = 0; i < die->num_attrs; ++i) |
22678 | { | |
d97bc12b DE |
22679 | print_spaces (indent, f); |
22680 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22681 | dwarf_attr_name (die->attrs[i].name), |
22682 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22683 | |
c906108c SS |
22684 | switch (die->attrs[i].form) |
22685 | { | |
c906108c | 22686 | case DW_FORM_addr: |
3019eac3 | 22687 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22688 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22689 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22690 | break; |
22691 | case DW_FORM_block2: | |
22692 | case DW_FORM_block4: | |
22693 | case DW_FORM_block: | |
22694 | case DW_FORM_block1: | |
56eb65bd SP |
22695 | fprintf_unfiltered (f, "block: size %s", |
22696 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22697 | break; |
2dc7f7b3 | 22698 | case DW_FORM_exprloc: |
56eb65bd SP |
22699 | fprintf_unfiltered (f, "expression: size %s", |
22700 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22701 | break; |
0224619f JK |
22702 | case DW_FORM_data16: |
22703 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22704 | break; | |
4568ecf9 DE |
22705 | case DW_FORM_ref_addr: |
22706 | fprintf_unfiltered (f, "ref address: "); | |
22707 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22708 | break; | |
36586728 TT |
22709 | case DW_FORM_GNU_ref_alt: |
22710 | fprintf_unfiltered (f, "alt ref address: "); | |
22711 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22712 | break; | |
10b3939b DJ |
22713 | case DW_FORM_ref1: |
22714 | case DW_FORM_ref2: | |
22715 | case DW_FORM_ref4: | |
4568ecf9 DE |
22716 | case DW_FORM_ref8: |
22717 | case DW_FORM_ref_udata: | |
d97bc12b | 22718 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22719 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22720 | break; |
c906108c SS |
22721 | case DW_FORM_data1: |
22722 | case DW_FORM_data2: | |
22723 | case DW_FORM_data4: | |
ce5d95e1 | 22724 | case DW_FORM_data8: |
c906108c SS |
22725 | case DW_FORM_udata: |
22726 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22727 | fprintf_unfiltered (f, "constant: %s", |
22728 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22729 | break; |
2dc7f7b3 TT |
22730 | case DW_FORM_sec_offset: |
22731 | fprintf_unfiltered (f, "section offset: %s", | |
22732 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22733 | break; | |
55f1336d | 22734 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22735 | fprintf_unfiltered (f, "signature: %s", |
22736 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22737 | break; |
c906108c | 22738 | case DW_FORM_string: |
4bdf3d34 | 22739 | case DW_FORM_strp: |
43988095 | 22740 | case DW_FORM_line_strp: |
3019eac3 | 22741 | case DW_FORM_GNU_str_index: |
36586728 | 22742 | case DW_FORM_GNU_strp_alt: |
8285870a | 22743 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22744 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22745 | ? DW_STRING (&die->attrs[i]) : "", |
22746 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22747 | break; |
22748 | case DW_FORM_flag: | |
22749 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22750 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22751 | else |
d97bc12b | 22752 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22753 | break; |
2dc7f7b3 TT |
22754 | case DW_FORM_flag_present: |
22755 | fprintf_unfiltered (f, "flag: TRUE"); | |
22756 | break; | |
a8329558 | 22757 | case DW_FORM_indirect: |
0963b4bd MS |
22758 | /* The reader will have reduced the indirect form to |
22759 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22760 | fprintf_unfiltered (f, |
22761 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22762 | break; |
663c44ac JK |
22763 | case DW_FORM_implicit_const: |
22764 | fprintf_unfiltered (f, "constant: %s", | |
22765 | plongest (DW_SND (&die->attrs[i]))); | |
22766 | break; | |
c906108c | 22767 | default: |
d97bc12b | 22768 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22769 | die->attrs[i].form); |
d97bc12b | 22770 | break; |
c906108c | 22771 | } |
d97bc12b | 22772 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22773 | } |
22774 | } | |
22775 | ||
f9aca02d | 22776 | static void |
d97bc12b | 22777 | dump_die_for_error (struct die_info *die) |
c906108c | 22778 | { |
d97bc12b DE |
22779 | dump_die_shallow (gdb_stderr, 0, die); |
22780 | } | |
22781 | ||
22782 | static void | |
22783 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22784 | { | |
22785 | int indent = level * 4; | |
22786 | ||
22787 | gdb_assert (die != NULL); | |
22788 | ||
22789 | if (level >= max_level) | |
22790 | return; | |
22791 | ||
22792 | dump_die_shallow (f, indent, die); | |
22793 | ||
22794 | if (die->child != NULL) | |
c906108c | 22795 | { |
d97bc12b DE |
22796 | print_spaces (indent, f); |
22797 | fprintf_unfiltered (f, " Children:"); | |
22798 | if (level + 1 < max_level) | |
22799 | { | |
22800 | fprintf_unfiltered (f, "\n"); | |
22801 | dump_die_1 (f, level + 1, max_level, die->child); | |
22802 | } | |
22803 | else | |
22804 | { | |
3e43a32a MS |
22805 | fprintf_unfiltered (f, |
22806 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22807 | } |
22808 | } | |
22809 | ||
22810 | if (die->sibling != NULL && level > 0) | |
22811 | { | |
22812 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22813 | } |
22814 | } | |
22815 | ||
d97bc12b DE |
22816 | /* This is called from the pdie macro in gdbinit.in. |
22817 | It's not static so gcc will keep a copy callable from gdb. */ | |
22818 | ||
22819 | void | |
22820 | dump_die (struct die_info *die, int max_level) | |
22821 | { | |
22822 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22823 | } | |
22824 | ||
f9aca02d | 22825 | static void |
51545339 | 22826 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22827 | { |
51545339 | 22828 | void **slot; |
c906108c | 22829 | |
9c541725 PA |
22830 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22831 | to_underlying (die->sect_off), | |
b64f50a1 | 22832 | INSERT); |
51545339 DJ |
22833 | |
22834 | *slot = die; | |
c906108c SS |
22835 | } |
22836 | ||
b64f50a1 JK |
22837 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22838 | required kind. */ | |
22839 | ||
22840 | static sect_offset | |
ff39bb5e | 22841 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22842 | { |
7771576e | 22843 | if (attr_form_is_ref (attr)) |
9c541725 | 22844 | return (sect_offset) DW_UNSND (attr); |
93311388 DE |
22845 | |
22846 | complaint (&symfile_complaints, | |
22847 | _("unsupported die ref attribute form: '%s'"), | |
22848 | dwarf_form_name (attr->form)); | |
9c541725 | 22849 | return {}; |
c906108c SS |
22850 | } |
22851 | ||
43bbcdc2 PH |
22852 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22853 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22854 | |
43bbcdc2 | 22855 | static LONGEST |
ff39bb5e | 22856 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22857 | { |
663c44ac | 22858 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22859 | return DW_SND (attr); |
22860 | else if (attr->form == DW_FORM_udata | |
22861 | || attr->form == DW_FORM_data1 | |
22862 | || attr->form == DW_FORM_data2 | |
22863 | || attr->form == DW_FORM_data4 | |
22864 | || attr->form == DW_FORM_data8) | |
22865 | return DW_UNSND (attr); | |
22866 | else | |
22867 | { | |
0224619f | 22868 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
22869 | complaint (&symfile_complaints, |
22870 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
22871 | dwarf_form_name (attr->form)); |
22872 | return default_value; | |
22873 | } | |
22874 | } | |
22875 | ||
348e048f DE |
22876 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22877 | On entry *REF_CU is the CU of SRC_DIE. | |
22878 | On exit *REF_CU is the CU of the result. */ | |
22879 | ||
22880 | static struct die_info * | |
ff39bb5e | 22881 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22882 | struct dwarf2_cu **ref_cu) |
22883 | { | |
22884 | struct die_info *die; | |
22885 | ||
7771576e | 22886 | if (attr_form_is_ref (attr)) |
348e048f | 22887 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22888 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22889 | die = follow_die_sig (src_die, attr, ref_cu); |
22890 | else | |
22891 | { | |
22892 | dump_die_for_error (src_die); | |
22893 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22894 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22895 | } |
22896 | ||
22897 | return die; | |
03dd20cc DJ |
22898 | } |
22899 | ||
5c631832 | 22900 | /* Follow reference OFFSET. |
673bfd45 DE |
22901 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22902 | On exit *REF_CU is the CU of the result. | |
22903 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22904 | |
f9aca02d | 22905 | static struct die_info * |
9c541725 | 22906 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22907 | struct dwarf2_cu **ref_cu) |
c906108c | 22908 | { |
10b3939b | 22909 | struct die_info temp_die; |
f2f0e013 | 22910 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22911 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22912 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22913 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
10b3939b | 22914 | |
348e048f DE |
22915 | gdb_assert (cu->per_cu != NULL); |
22916 | ||
98bfdba5 PA |
22917 | target_cu = cu; |
22918 | ||
3019eac3 | 22919 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22920 | { |
22921 | /* .debug_types CUs cannot reference anything outside their CU. | |
22922 | If they need to, they have to reference a signatured type via | |
55f1336d | 22923 | DW_FORM_ref_sig8. */ |
9c541725 | 22924 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22925 | return NULL; |
348e048f | 22926 | } |
36586728 | 22927 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22928 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22929 | { |
22930 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22931 | |
9c541725 | 22932 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22933 | dwarf2_per_objfile); |
03dd20cc DJ |
22934 | |
22935 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
22936 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
22937 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 22938 | |
10b3939b DJ |
22939 | target_cu = per_cu->cu; |
22940 | } | |
98bfdba5 PA |
22941 | else if (cu->dies == NULL) |
22942 | { | |
22943 | /* We're loading full DIEs during partial symbol reading. */ | |
22944 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 22945 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 22946 | } |
c906108c | 22947 | |
f2f0e013 | 22948 | *ref_cu = target_cu; |
9c541725 | 22949 | temp_die.sect_off = sect_off; |
9a3c8263 | 22950 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22951 | &temp_die, |
22952 | to_underlying (sect_off)); | |
5c631832 | 22953 | } |
10b3939b | 22954 | |
5c631832 JK |
22955 | /* Follow reference attribute ATTR of SRC_DIE. |
22956 | On entry *REF_CU is the CU of SRC_DIE. | |
22957 | On exit *REF_CU is the CU of the result. */ | |
22958 | ||
22959 | static struct die_info * | |
ff39bb5e | 22960 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22961 | struct dwarf2_cu **ref_cu) |
22962 | { | |
9c541725 | 22963 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22964 | struct dwarf2_cu *cu = *ref_cu; |
22965 | struct die_info *die; | |
22966 | ||
9c541725 | 22967 | die = follow_die_offset (sect_off, |
36586728 TT |
22968 | (attr->form == DW_FORM_GNU_ref_alt |
22969 | || cu->per_cu->is_dwz), | |
22970 | ref_cu); | |
5c631832 JK |
22971 | if (!die) |
22972 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
22973 | "at 0x%x [in module %s]"), | |
9c541725 | 22974 | to_underlying (sect_off), to_underlying (src_die->sect_off), |
518817b3 | 22975 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22976 | |
5c631832 JK |
22977 | return die; |
22978 | } | |
22979 | ||
9c541725 | 22980 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 22981 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
22982 | dwarf2_locexpr_baton->data has lifetime of |
22983 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
22984 | |
22985 | struct dwarf2_locexpr_baton | |
9c541725 | 22986 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
22987 | struct dwarf2_per_cu_data *per_cu, |
22988 | CORE_ADDR (*get_frame_pc) (void *baton), | |
22989 | void *baton) | |
5c631832 | 22990 | { |
918dd910 | 22991 | struct dwarf2_cu *cu; |
5c631832 JK |
22992 | struct die_info *die; |
22993 | struct attribute *attr; | |
22994 | struct dwarf2_locexpr_baton retval; | |
e3b94546 | 22995 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ed2dc618 SM |
22996 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22997 | = get_dwarf2_per_objfile (objfile); | |
8cf6f0b1 | 22998 | |
918dd910 JK |
22999 | if (per_cu->cu == NULL) |
23000 | load_cu (per_cu); | |
23001 | cu = per_cu->cu; | |
cc12ce38 DE |
23002 | if (cu == NULL) |
23003 | { | |
23004 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23005 | Instead just throw an error, not much else we can do. */ | |
23006 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
e3b94546 | 23007 | to_underlying (sect_off), objfile_name (objfile)); |
cc12ce38 | 23008 | } |
918dd910 | 23009 | |
9c541725 | 23010 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 JK |
23011 | if (!die) |
23012 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
e3b94546 | 23013 | to_underlying (sect_off), objfile_name (objfile)); |
5c631832 JK |
23014 | |
23015 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23016 | if (!attr) | |
23017 | { | |
e103e986 JK |
23018 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23019 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23020 | |
e103e986 | 23021 | retval.data = NULL; |
5c631832 JK |
23022 | retval.size = 0; |
23023 | } | |
8cf6f0b1 TT |
23024 | else if (attr_form_is_section_offset (attr)) |
23025 | { | |
23026 | struct dwarf2_loclist_baton loclist_baton; | |
23027 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23028 | size_t size; | |
23029 | ||
23030 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23031 | ||
23032 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23033 | &size, pc); | |
23034 | retval.size = size; | |
23035 | } | |
5c631832 JK |
23036 | else |
23037 | { | |
23038 | if (!attr_form_is_block (attr)) | |
23039 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
23040 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
e3b94546 | 23041 | to_underlying (sect_off), objfile_name (objfile)); |
5c631832 JK |
23042 | |
23043 | retval.data = DW_BLOCK (attr)->data; | |
23044 | retval.size = DW_BLOCK (attr)->size; | |
23045 | } | |
23046 | retval.per_cu = cu->per_cu; | |
918dd910 | 23047 | |
ed2dc618 | 23048 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23049 | |
5c631832 | 23050 | return retval; |
348e048f DE |
23051 | } |
23052 | ||
8b9737bf TT |
23053 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23054 | offset. */ | |
23055 | ||
23056 | struct dwarf2_locexpr_baton | |
23057 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23058 | struct dwarf2_per_cu_data *per_cu, | |
23059 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23060 | void *baton) | |
23061 | { | |
9c541725 | 23062 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23063 | |
9c541725 | 23064 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23065 | } |
23066 | ||
b6807d98 TT |
23067 | /* Write a constant of a given type as target-ordered bytes into |
23068 | OBSTACK. */ | |
23069 | ||
23070 | static const gdb_byte * | |
23071 | write_constant_as_bytes (struct obstack *obstack, | |
23072 | enum bfd_endian byte_order, | |
23073 | struct type *type, | |
23074 | ULONGEST value, | |
23075 | LONGEST *len) | |
23076 | { | |
23077 | gdb_byte *result; | |
23078 | ||
23079 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23080 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23081 | store_unsigned_integer (result, *len, byte_order, value); |
23082 | ||
23083 | return result; | |
23084 | } | |
23085 | ||
23086 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23087 | pointer to the constant bytes and set LEN to the length of the | |
23088 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23089 | does not have a DW_AT_const_value, return NULL. */ | |
23090 | ||
23091 | const gdb_byte * | |
9c541725 | 23092 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23093 | struct dwarf2_per_cu_data *per_cu, |
23094 | struct obstack *obstack, | |
23095 | LONGEST *len) | |
23096 | { | |
23097 | struct dwarf2_cu *cu; | |
23098 | struct die_info *die; | |
23099 | struct attribute *attr; | |
23100 | const gdb_byte *result = NULL; | |
23101 | struct type *type; | |
23102 | LONGEST value; | |
23103 | enum bfd_endian byte_order; | |
e3b94546 | 23104 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23105 | |
b6807d98 TT |
23106 | if (per_cu->cu == NULL) |
23107 | load_cu (per_cu); | |
23108 | cu = per_cu->cu; | |
cc12ce38 DE |
23109 | if (cu == NULL) |
23110 | { | |
23111 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23112 | Instead just throw an error, not much else we can do. */ | |
23113 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
e3b94546 | 23114 | to_underlying (sect_off), objfile_name (objfile)); |
cc12ce38 | 23115 | } |
b6807d98 | 23116 | |
9c541725 | 23117 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 TT |
23118 | if (!die) |
23119 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
e3b94546 | 23120 | to_underlying (sect_off), objfile_name (objfile)); |
b6807d98 TT |
23121 | |
23122 | ||
23123 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23124 | if (attr == NULL) | |
23125 | return NULL; | |
23126 | ||
e3b94546 | 23127 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23128 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23129 | ||
23130 | switch (attr->form) | |
23131 | { | |
23132 | case DW_FORM_addr: | |
23133 | case DW_FORM_GNU_addr_index: | |
23134 | { | |
23135 | gdb_byte *tem; | |
23136 | ||
23137 | *len = cu->header.addr_size; | |
224c3ddb | 23138 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23139 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23140 | result = tem; | |
23141 | } | |
23142 | break; | |
23143 | case DW_FORM_string: | |
23144 | case DW_FORM_strp: | |
23145 | case DW_FORM_GNU_str_index: | |
23146 | case DW_FORM_GNU_strp_alt: | |
23147 | /* DW_STRING is already allocated on the objfile obstack, point | |
23148 | directly to it. */ | |
23149 | result = (const gdb_byte *) DW_STRING (attr); | |
23150 | *len = strlen (DW_STRING (attr)); | |
23151 | break; | |
23152 | case DW_FORM_block1: | |
23153 | case DW_FORM_block2: | |
23154 | case DW_FORM_block4: | |
23155 | case DW_FORM_block: | |
23156 | case DW_FORM_exprloc: | |
0224619f | 23157 | case DW_FORM_data16: |
b6807d98 TT |
23158 | result = DW_BLOCK (attr)->data; |
23159 | *len = DW_BLOCK (attr)->size; | |
23160 | break; | |
23161 | ||
23162 | /* The DW_AT_const_value attributes are supposed to carry the | |
23163 | symbol's value "represented as it would be on the target | |
23164 | architecture." By the time we get here, it's already been | |
23165 | converted to host endianness, so we just need to sign- or | |
23166 | zero-extend it as appropriate. */ | |
23167 | case DW_FORM_data1: | |
23168 | type = die_type (die, cu); | |
23169 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23170 | if (result == NULL) | |
23171 | result = write_constant_as_bytes (obstack, byte_order, | |
23172 | type, value, len); | |
23173 | break; | |
23174 | case DW_FORM_data2: | |
23175 | type = die_type (die, cu); | |
23176 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23177 | if (result == NULL) | |
23178 | result = write_constant_as_bytes (obstack, byte_order, | |
23179 | type, value, len); | |
23180 | break; | |
23181 | case DW_FORM_data4: | |
23182 | type = die_type (die, cu); | |
23183 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23184 | if (result == NULL) | |
23185 | result = write_constant_as_bytes (obstack, byte_order, | |
23186 | type, value, len); | |
23187 | break; | |
23188 | case DW_FORM_data8: | |
23189 | type = die_type (die, cu); | |
23190 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23191 | if (result == NULL) | |
23192 | result = write_constant_as_bytes (obstack, byte_order, | |
23193 | type, value, len); | |
23194 | break; | |
23195 | ||
23196 | case DW_FORM_sdata: | |
663c44ac | 23197 | case DW_FORM_implicit_const: |
b6807d98 TT |
23198 | type = die_type (die, cu); |
23199 | result = write_constant_as_bytes (obstack, byte_order, | |
23200 | type, DW_SND (attr), len); | |
23201 | break; | |
23202 | ||
23203 | case DW_FORM_udata: | |
23204 | type = die_type (die, cu); | |
23205 | result = write_constant_as_bytes (obstack, byte_order, | |
23206 | type, DW_UNSND (attr), len); | |
23207 | break; | |
23208 | ||
23209 | default: | |
23210 | complaint (&symfile_complaints, | |
23211 | _("unsupported const value attribute form: '%s'"), | |
23212 | dwarf_form_name (attr->form)); | |
23213 | break; | |
23214 | } | |
23215 | ||
23216 | return result; | |
23217 | } | |
23218 | ||
7942e96e AA |
23219 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23220 | valid type for this die is found. */ | |
23221 | ||
23222 | struct type * | |
9c541725 | 23223 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23224 | struct dwarf2_per_cu_data *per_cu) |
23225 | { | |
23226 | struct dwarf2_cu *cu; | |
23227 | struct die_info *die; | |
23228 | ||
7942e96e AA |
23229 | if (per_cu->cu == NULL) |
23230 | load_cu (per_cu); | |
23231 | cu = per_cu->cu; | |
23232 | if (!cu) | |
23233 | return NULL; | |
23234 | ||
9c541725 | 23235 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23236 | if (!die) |
23237 | return NULL; | |
23238 | ||
23239 | return die_type (die, cu); | |
23240 | } | |
23241 | ||
8a9b8146 TT |
23242 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23243 | PER_CU. */ | |
23244 | ||
23245 | struct type * | |
b64f50a1 | 23246 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23247 | struct dwarf2_per_cu_data *per_cu) |
23248 | { | |
9c541725 | 23249 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23250 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23251 | } |
23252 | ||
ac9ec31b | 23253 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23254 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23255 | On exit *REF_CU is the CU of the result. |
23256 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23257 | |
23258 | static struct die_info * | |
ac9ec31b DE |
23259 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23260 | struct dwarf2_cu **ref_cu) | |
348e048f | 23261 | { |
348e048f | 23262 | struct die_info temp_die; |
348e048f DE |
23263 | struct dwarf2_cu *sig_cu; |
23264 | struct die_info *die; | |
23265 | ||
ac9ec31b DE |
23266 | /* While it might be nice to assert sig_type->type == NULL here, |
23267 | we can get here for DW_AT_imported_declaration where we need | |
23268 | the DIE not the type. */ | |
348e048f DE |
23269 | |
23270 | /* If necessary, add it to the queue and load its DIEs. */ | |
23271 | ||
95554aad | 23272 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23273 | read_signatured_type (sig_type); |
348e048f | 23274 | |
348e048f | 23275 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23276 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23277 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23278 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23279 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23280 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23281 | if (die) |
23282 | { | |
ed2dc618 | 23283 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23284 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23285 | |
796a7ff8 DE |
23286 | /* For .gdb_index version 7 keep track of included TUs. |
23287 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23288 | if (dwarf2_per_objfile->index_table != NULL | |
23289 | && dwarf2_per_objfile->index_table->version <= 7) | |
23290 | { | |
23291 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23292 | (*ref_cu)->per_cu->imported_symtabs, | |
23293 | sig_cu->per_cu); | |
23294 | } | |
23295 | ||
348e048f DE |
23296 | *ref_cu = sig_cu; |
23297 | return die; | |
23298 | } | |
23299 | ||
ac9ec31b DE |
23300 | return NULL; |
23301 | } | |
23302 | ||
23303 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23304 | On entry *REF_CU is the CU of SRC_DIE. | |
23305 | On exit *REF_CU is the CU of the result. | |
23306 | The result is the DIE of the type. | |
23307 | If the referenced type cannot be found an error is thrown. */ | |
23308 | ||
23309 | static struct die_info * | |
ff39bb5e | 23310 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23311 | struct dwarf2_cu **ref_cu) |
23312 | { | |
23313 | ULONGEST signature = DW_SIGNATURE (attr); | |
23314 | struct signatured_type *sig_type; | |
23315 | struct die_info *die; | |
23316 | ||
23317 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23318 | ||
a2ce51a0 | 23319 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23320 | /* sig_type will be NULL if the signatured type is missing from |
23321 | the debug info. */ | |
23322 | if (sig_type == NULL) | |
23323 | { | |
23324 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
23325 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23326 | hex_string (signature), to_underlying (src_die->sect_off), |
518817b3 | 23327 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23328 | } |
23329 | ||
23330 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23331 | if (die == NULL) | |
23332 | { | |
23333 | dump_die_for_error (src_die); | |
23334 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
23335 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23336 | hex_string (signature), to_underlying (src_die->sect_off), |
518817b3 | 23337 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23338 | } |
23339 | ||
23340 | return die; | |
23341 | } | |
23342 | ||
23343 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23344 | reading in and processing the type unit if necessary. */ | |
23345 | ||
23346 | static struct type * | |
23347 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23348 | struct dwarf2_cu *cu) | |
23349 | { | |
518817b3 SM |
23350 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23351 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23352 | struct signatured_type *sig_type; |
23353 | struct dwarf2_cu *type_cu; | |
23354 | struct die_info *type_die; | |
23355 | struct type *type; | |
23356 | ||
a2ce51a0 | 23357 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23358 | /* sig_type will be NULL if the signatured type is missing from |
23359 | the debug info. */ | |
23360 | if (sig_type == NULL) | |
23361 | { | |
23362 | complaint (&symfile_complaints, | |
23363 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
23364 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23365 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 23366 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23367 | return build_error_marker_type (cu, die); |
23368 | } | |
23369 | ||
23370 | /* If we already know the type we're done. */ | |
23371 | if (sig_type->type != NULL) | |
23372 | return sig_type->type; | |
23373 | ||
23374 | type_cu = cu; | |
23375 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23376 | if (type_die != NULL) | |
23377 | { | |
23378 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23379 | is created. This is important, for example, because for c++ classes | |
23380 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23381 | type = read_type_die (type_die, type_cu); | |
23382 | if (type == NULL) | |
23383 | { | |
23384 | complaint (&symfile_complaints, | |
23385 | _("Dwarf Error: Cannot build signatured type %s" | |
23386 | " referenced from DIE at 0x%x [in module %s]"), | |
9c541725 | 23387 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 23388 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23389 | type = build_error_marker_type (cu, die); |
23390 | } | |
23391 | } | |
23392 | else | |
23393 | { | |
23394 | complaint (&symfile_complaints, | |
23395 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
23396 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23397 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 23398 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23399 | type = build_error_marker_type (cu, die); |
23400 | } | |
23401 | sig_type->type = type; | |
23402 | ||
23403 | return type; | |
23404 | } | |
23405 | ||
23406 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23407 | reading in and processing the type unit if necessary. */ | |
23408 | ||
23409 | static struct type * | |
ff39bb5e | 23410 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23411 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23412 | { |
23413 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23414 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23415 | { |
23416 | struct dwarf2_cu *type_cu = cu; | |
23417 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23418 | ||
23419 | return read_type_die (type_die, type_cu); | |
23420 | } | |
23421 | else if (attr->form == DW_FORM_ref_sig8) | |
23422 | { | |
23423 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23424 | } | |
23425 | else | |
23426 | { | |
518817b3 SM |
23427 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23428 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23429 | |
ac9ec31b DE |
23430 | complaint (&symfile_complaints, |
23431 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
23432 | " at 0x%x [in module %s]"), | |
9c541725 | 23433 | dwarf_form_name (attr->form), to_underlying (die->sect_off), |
4262abfb | 23434 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23435 | return build_error_marker_type (cu, die); |
23436 | } | |
348e048f DE |
23437 | } |
23438 | ||
e5fe5e75 | 23439 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23440 | |
23441 | static void | |
e5fe5e75 | 23442 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23443 | { |
52dc124a | 23444 | struct signatured_type *sig_type; |
348e048f | 23445 | |
f4dc4d17 DE |
23446 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23447 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23448 | ||
6721b2ec DE |
23449 | /* We have the per_cu, but we need the signatured_type. |
23450 | Fortunately this is an easy translation. */ | |
23451 | gdb_assert (per_cu->is_debug_types); | |
23452 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23453 | |
6721b2ec | 23454 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23455 | |
52dc124a | 23456 | read_signatured_type (sig_type); |
348e048f | 23457 | |
6721b2ec | 23458 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23459 | } |
23460 | ||
dee91e82 DE |
23461 | /* die_reader_func for read_signatured_type. |
23462 | This is identical to load_full_comp_unit_reader, | |
23463 | but is kept separate for now. */ | |
348e048f DE |
23464 | |
23465 | static void | |
dee91e82 | 23466 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23467 | const gdb_byte *info_ptr, |
dee91e82 DE |
23468 | struct die_info *comp_unit_die, |
23469 | int has_children, | |
23470 | void *data) | |
348e048f | 23471 | { |
dee91e82 | 23472 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23473 | |
dee91e82 DE |
23474 | gdb_assert (cu->die_hash == NULL); |
23475 | cu->die_hash = | |
23476 | htab_create_alloc_ex (cu->header.length / 12, | |
23477 | die_hash, | |
23478 | die_eq, | |
23479 | NULL, | |
23480 | &cu->comp_unit_obstack, | |
23481 | hashtab_obstack_allocate, | |
23482 | dummy_obstack_deallocate); | |
348e048f | 23483 | |
dee91e82 DE |
23484 | if (has_children) |
23485 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23486 | &info_ptr, comp_unit_die); | |
23487 | cu->dies = comp_unit_die; | |
23488 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23489 | |
23490 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23491 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23492 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23493 | or we won't be able to build types correctly. |
23494 | Similarly, if we do not read the producer, we can not apply | |
23495 | producer-specific interpretation. */ | |
95554aad | 23496 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23497 | } |
348e048f | 23498 | |
3019eac3 DE |
23499 | /* Read in a signatured type and build its CU and DIEs. |
23500 | If the type is a stub for the real type in a DWO file, | |
23501 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23502 | |
23503 | static void | |
23504 | read_signatured_type (struct signatured_type *sig_type) | |
23505 | { | |
23506 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23507 | |
3019eac3 | 23508 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23509 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23510 | |
f4dc4d17 DE |
23511 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
23512 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 23513 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23514 | } |
23515 | ||
c906108c SS |
23516 | /* Decode simple location descriptions. |
23517 | Given a pointer to a dwarf block that defines a location, compute | |
23518 | the location and return the value. | |
23519 | ||
4cecd739 DJ |
23520 | NOTE drow/2003-11-18: This function is called in two situations |
23521 | now: for the address of static or global variables (partial symbols | |
23522 | only) and for offsets into structures which are expected to be | |
23523 | (more or less) constant. The partial symbol case should go away, | |
23524 | and only the constant case should remain. That will let this | |
23525 | function complain more accurately. A few special modes are allowed | |
23526 | without complaint for global variables (for instance, global | |
23527 | register values and thread-local values). | |
c906108c SS |
23528 | |
23529 | A location description containing no operations indicates that the | |
4cecd739 | 23530 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23531 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23532 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23533 | complaint. |
23534 | ||
23535 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23536 | |
23537 | static CORE_ADDR | |
e7c27a73 | 23538 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23539 | { |
518817b3 | 23540 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23541 | size_t i; |
23542 | size_t size = blk->size; | |
d521ce57 | 23543 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23544 | CORE_ADDR stack[64]; |
23545 | int stacki; | |
23546 | unsigned int bytes_read, unsnd; | |
23547 | gdb_byte op; | |
c906108c | 23548 | |
21ae7a4d JK |
23549 | i = 0; |
23550 | stacki = 0; | |
23551 | stack[stacki] = 0; | |
23552 | stack[++stacki] = 0; | |
23553 | ||
23554 | while (i < size) | |
23555 | { | |
23556 | op = data[i++]; | |
23557 | switch (op) | |
23558 | { | |
23559 | case DW_OP_lit0: | |
23560 | case DW_OP_lit1: | |
23561 | case DW_OP_lit2: | |
23562 | case DW_OP_lit3: | |
23563 | case DW_OP_lit4: | |
23564 | case DW_OP_lit5: | |
23565 | case DW_OP_lit6: | |
23566 | case DW_OP_lit7: | |
23567 | case DW_OP_lit8: | |
23568 | case DW_OP_lit9: | |
23569 | case DW_OP_lit10: | |
23570 | case DW_OP_lit11: | |
23571 | case DW_OP_lit12: | |
23572 | case DW_OP_lit13: | |
23573 | case DW_OP_lit14: | |
23574 | case DW_OP_lit15: | |
23575 | case DW_OP_lit16: | |
23576 | case DW_OP_lit17: | |
23577 | case DW_OP_lit18: | |
23578 | case DW_OP_lit19: | |
23579 | case DW_OP_lit20: | |
23580 | case DW_OP_lit21: | |
23581 | case DW_OP_lit22: | |
23582 | case DW_OP_lit23: | |
23583 | case DW_OP_lit24: | |
23584 | case DW_OP_lit25: | |
23585 | case DW_OP_lit26: | |
23586 | case DW_OP_lit27: | |
23587 | case DW_OP_lit28: | |
23588 | case DW_OP_lit29: | |
23589 | case DW_OP_lit30: | |
23590 | case DW_OP_lit31: | |
23591 | stack[++stacki] = op - DW_OP_lit0; | |
23592 | break; | |
f1bea926 | 23593 | |
21ae7a4d JK |
23594 | case DW_OP_reg0: |
23595 | case DW_OP_reg1: | |
23596 | case DW_OP_reg2: | |
23597 | case DW_OP_reg3: | |
23598 | case DW_OP_reg4: | |
23599 | case DW_OP_reg5: | |
23600 | case DW_OP_reg6: | |
23601 | case DW_OP_reg7: | |
23602 | case DW_OP_reg8: | |
23603 | case DW_OP_reg9: | |
23604 | case DW_OP_reg10: | |
23605 | case DW_OP_reg11: | |
23606 | case DW_OP_reg12: | |
23607 | case DW_OP_reg13: | |
23608 | case DW_OP_reg14: | |
23609 | case DW_OP_reg15: | |
23610 | case DW_OP_reg16: | |
23611 | case DW_OP_reg17: | |
23612 | case DW_OP_reg18: | |
23613 | case DW_OP_reg19: | |
23614 | case DW_OP_reg20: | |
23615 | case DW_OP_reg21: | |
23616 | case DW_OP_reg22: | |
23617 | case DW_OP_reg23: | |
23618 | case DW_OP_reg24: | |
23619 | case DW_OP_reg25: | |
23620 | case DW_OP_reg26: | |
23621 | case DW_OP_reg27: | |
23622 | case DW_OP_reg28: | |
23623 | case DW_OP_reg29: | |
23624 | case DW_OP_reg30: | |
23625 | case DW_OP_reg31: | |
23626 | stack[++stacki] = op - DW_OP_reg0; | |
23627 | if (i < size) | |
23628 | dwarf2_complex_location_expr_complaint (); | |
23629 | break; | |
c906108c | 23630 | |
21ae7a4d JK |
23631 | case DW_OP_regx: |
23632 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23633 | i += bytes_read; | |
23634 | stack[++stacki] = unsnd; | |
23635 | if (i < size) | |
23636 | dwarf2_complex_location_expr_complaint (); | |
23637 | break; | |
c906108c | 23638 | |
21ae7a4d JK |
23639 | case DW_OP_addr: |
23640 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23641 | cu, &bytes_read); | |
23642 | i += bytes_read; | |
23643 | break; | |
d53d4ac5 | 23644 | |
21ae7a4d JK |
23645 | case DW_OP_const1u: |
23646 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23647 | i += 1; | |
23648 | break; | |
23649 | ||
23650 | case DW_OP_const1s: | |
23651 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23652 | i += 1; | |
23653 | break; | |
23654 | ||
23655 | case DW_OP_const2u: | |
23656 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23657 | i += 2; | |
23658 | break; | |
23659 | ||
23660 | case DW_OP_const2s: | |
23661 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23662 | i += 2; | |
23663 | break; | |
d53d4ac5 | 23664 | |
21ae7a4d JK |
23665 | case DW_OP_const4u: |
23666 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23667 | i += 4; | |
23668 | break; | |
23669 | ||
23670 | case DW_OP_const4s: | |
23671 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23672 | i += 4; | |
23673 | break; | |
23674 | ||
585861ea JK |
23675 | case DW_OP_const8u: |
23676 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23677 | i += 8; | |
23678 | break; | |
23679 | ||
21ae7a4d JK |
23680 | case DW_OP_constu: |
23681 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23682 | &bytes_read); | |
23683 | i += bytes_read; | |
23684 | break; | |
23685 | ||
23686 | case DW_OP_consts: | |
23687 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23688 | i += bytes_read; | |
23689 | break; | |
23690 | ||
23691 | case DW_OP_dup: | |
23692 | stack[stacki + 1] = stack[stacki]; | |
23693 | stacki++; | |
23694 | break; | |
23695 | ||
23696 | case DW_OP_plus: | |
23697 | stack[stacki - 1] += stack[stacki]; | |
23698 | stacki--; | |
23699 | break; | |
23700 | ||
23701 | case DW_OP_plus_uconst: | |
23702 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23703 | &bytes_read); | |
23704 | i += bytes_read; | |
23705 | break; | |
23706 | ||
23707 | case DW_OP_minus: | |
23708 | stack[stacki - 1] -= stack[stacki]; | |
23709 | stacki--; | |
23710 | break; | |
23711 | ||
23712 | case DW_OP_deref: | |
23713 | /* If we're not the last op, then we definitely can't encode | |
23714 | this using GDB's address_class enum. This is valid for partial | |
23715 | global symbols, although the variable's address will be bogus | |
23716 | in the psymtab. */ | |
23717 | if (i < size) | |
23718 | dwarf2_complex_location_expr_complaint (); | |
23719 | break; | |
23720 | ||
23721 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23722 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23723 | /* The top of the stack has the offset from the beginning |
23724 | of the thread control block at which the variable is located. */ | |
23725 | /* Nothing should follow this operator, so the top of stack would | |
23726 | be returned. */ | |
23727 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23728 | address will be bogus in the psymtab. Make it always at least |
23729 | non-zero to not look as a variable garbage collected by linker | |
23730 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23731 | if (i < size) |
23732 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23733 | stack[stacki]++; |
21ae7a4d JK |
23734 | break; |
23735 | ||
23736 | case DW_OP_GNU_uninit: | |
23737 | break; | |
23738 | ||
3019eac3 | 23739 | case DW_OP_GNU_addr_index: |
49f6c839 | 23740 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23741 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23742 | &bytes_read); | |
23743 | i += bytes_read; | |
23744 | break; | |
23745 | ||
21ae7a4d JK |
23746 | default: |
23747 | { | |
f39c6ffd | 23748 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23749 | |
23750 | if (name) | |
23751 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
23752 | name); | |
23753 | else | |
23754 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
23755 | op); | |
23756 | } | |
23757 | ||
23758 | return (stack[stacki]); | |
d53d4ac5 | 23759 | } |
3c6e0cb3 | 23760 | |
21ae7a4d JK |
23761 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23762 | outside of the allocated space. Also enforce minimum>0. */ | |
23763 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23764 | { | |
23765 | complaint (&symfile_complaints, | |
23766 | _("location description stack overflow")); | |
23767 | return 0; | |
23768 | } | |
23769 | ||
23770 | if (stacki <= 0) | |
23771 | { | |
23772 | complaint (&symfile_complaints, | |
23773 | _("location description stack underflow")); | |
23774 | return 0; | |
23775 | } | |
23776 | } | |
23777 | return (stack[stacki]); | |
c906108c SS |
23778 | } |
23779 | ||
23780 | /* memory allocation interface */ | |
23781 | ||
c906108c | 23782 | static struct dwarf_block * |
7b5a2f43 | 23783 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23784 | { |
8d749320 | 23785 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23786 | } |
23787 | ||
c906108c | 23788 | static struct die_info * |
b60c80d6 | 23789 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23790 | { |
23791 | struct die_info *die; | |
b60c80d6 DJ |
23792 | size_t size = sizeof (struct die_info); |
23793 | ||
23794 | if (num_attrs > 1) | |
23795 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23796 | |
b60c80d6 | 23797 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23798 | memset (die, 0, sizeof (struct die_info)); |
23799 | return (die); | |
23800 | } | |
2e276125 JB |
23801 | |
23802 | \f | |
23803 | /* Macro support. */ | |
23804 | ||
233d95b5 JK |
23805 | /* Return file name relative to the compilation directory of file number I in |
23806 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23807 | responsible for freeing it. */ |
233d95b5 | 23808 | |
2e276125 | 23809 | static char * |
233d95b5 | 23810 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23811 | { |
6a83a1e6 EZ |
23812 | /* Is the file number a valid index into the line header's file name |
23813 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23814 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23815 | { |
8c43009f | 23816 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23817 | |
8c43009f PA |
23818 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23819 | { | |
23820 | const char *dir = fe.include_dir (lh); | |
23821 | if (dir != NULL) | |
23822 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23823 | } | |
23824 | return xstrdup (fe.name); | |
6a83a1e6 | 23825 | } |
2e276125 JB |
23826 | else |
23827 | { | |
6a83a1e6 EZ |
23828 | /* The compiler produced a bogus file number. We can at least |
23829 | record the macro definitions made in the file, even if we | |
23830 | won't be able to find the file by name. */ | |
23831 | char fake_name[80]; | |
9a619af0 | 23832 | |
8c042590 PM |
23833 | xsnprintf (fake_name, sizeof (fake_name), |
23834 | "<bad macro file number %d>", file); | |
2e276125 | 23835 | |
6e70227d | 23836 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
23837 | _("bad file number in macro information (%d)"), |
23838 | file); | |
2e276125 | 23839 | |
6a83a1e6 | 23840 | return xstrdup (fake_name); |
2e276125 JB |
23841 | } |
23842 | } | |
23843 | ||
233d95b5 JK |
23844 | /* Return the full name of file number I in *LH's file name table. |
23845 | Use COMP_DIR as the name of the current directory of the | |
23846 | compilation. The result is allocated using xmalloc; the caller is | |
23847 | responsible for freeing it. */ | |
23848 | static char * | |
23849 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23850 | { | |
23851 | /* Is the file number a valid index into the line header's file name | |
23852 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23853 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23854 | { |
23855 | char *relative = file_file_name (file, lh); | |
23856 | ||
23857 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23858 | return relative; | |
b36cec19 PA |
23859 | return reconcat (relative, comp_dir, SLASH_STRING, |
23860 | relative, (char *) NULL); | |
233d95b5 JK |
23861 | } |
23862 | else | |
23863 | return file_file_name (file, lh); | |
23864 | } | |
23865 | ||
2e276125 JB |
23866 | |
23867 | static struct macro_source_file * | |
23868 | macro_start_file (int file, int line, | |
23869 | struct macro_source_file *current_file, | |
43f3e411 | 23870 | struct line_header *lh) |
2e276125 | 23871 | { |
233d95b5 JK |
23872 | /* File name relative to the compilation directory of this source file. */ |
23873 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23874 | |
2e276125 | 23875 | if (! current_file) |
abc9d0dc | 23876 | { |
fc474241 DE |
23877 | /* Note: We don't create a macro table for this compilation unit |
23878 | at all until we actually get a filename. */ | |
43f3e411 | 23879 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 23880 | |
abc9d0dc TT |
23881 | /* If we have no current file, then this must be the start_file |
23882 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23883 | current_file = macro_set_main (macro_table, file_name); |
23884 | macro_define_special (macro_table); | |
abc9d0dc | 23885 | } |
2e276125 | 23886 | else |
233d95b5 | 23887 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23888 | |
233d95b5 | 23889 | xfree (file_name); |
6e70227d | 23890 | |
2e276125 JB |
23891 | return current_file; |
23892 | } | |
23893 | ||
2e276125 JB |
23894 | static const char * |
23895 | consume_improper_spaces (const char *p, const char *body) | |
23896 | { | |
23897 | if (*p == ' ') | |
23898 | { | |
4d3c2250 | 23899 | complaint (&symfile_complaints, |
3e43a32a MS |
23900 | _("macro definition contains spaces " |
23901 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 23902 | body); |
2e276125 JB |
23903 | |
23904 | while (*p == ' ') | |
23905 | p++; | |
23906 | } | |
23907 | ||
23908 | return p; | |
23909 | } | |
23910 | ||
23911 | ||
23912 | static void | |
23913 | parse_macro_definition (struct macro_source_file *file, int line, | |
23914 | const char *body) | |
23915 | { | |
23916 | const char *p; | |
23917 | ||
23918 | /* The body string takes one of two forms. For object-like macro | |
23919 | definitions, it should be: | |
23920 | ||
23921 | <macro name> " " <definition> | |
23922 | ||
23923 | For function-like macro definitions, it should be: | |
23924 | ||
23925 | <macro name> "() " <definition> | |
23926 | or | |
23927 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23928 | ||
23929 | Spaces may appear only where explicitly indicated, and in the | |
23930 | <definition>. | |
23931 | ||
23932 | The Dwarf 2 spec says that an object-like macro's name is always | |
23933 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23934 | the space when the macro's definition is the empty string. |
2e276125 JB |
23935 | |
23936 | The Dwarf 2 spec says that there should be no spaces between the | |
23937 | formal arguments in a function-like macro's formal argument list, | |
23938 | but versions of GCC around March 2002 include spaces after the | |
23939 | commas. */ | |
23940 | ||
23941 | ||
23942 | /* Find the extent of the macro name. The macro name is terminated | |
23943 | by either a space or null character (for an object-like macro) or | |
23944 | an opening paren (for a function-like macro). */ | |
23945 | for (p = body; *p; p++) | |
23946 | if (*p == ' ' || *p == '(') | |
23947 | break; | |
23948 | ||
23949 | if (*p == ' ' || *p == '\0') | |
23950 | { | |
23951 | /* It's an object-like macro. */ | |
23952 | int name_len = p - body; | |
3f8a7804 | 23953 | char *name = savestring (body, name_len); |
2e276125 JB |
23954 | const char *replacement; |
23955 | ||
23956 | if (*p == ' ') | |
23957 | replacement = body + name_len + 1; | |
23958 | else | |
23959 | { | |
4d3c2250 | 23960 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23961 | replacement = body + name_len; |
23962 | } | |
6e70227d | 23963 | |
2e276125 JB |
23964 | macro_define_object (file, line, name, replacement); |
23965 | ||
23966 | xfree (name); | |
23967 | } | |
23968 | else if (*p == '(') | |
23969 | { | |
23970 | /* It's a function-like macro. */ | |
3f8a7804 | 23971 | char *name = savestring (body, p - body); |
2e276125 JB |
23972 | int argc = 0; |
23973 | int argv_size = 1; | |
8d749320 | 23974 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23975 | |
23976 | p++; | |
23977 | ||
23978 | p = consume_improper_spaces (p, body); | |
23979 | ||
23980 | /* Parse the formal argument list. */ | |
23981 | while (*p && *p != ')') | |
23982 | { | |
23983 | /* Find the extent of the current argument name. */ | |
23984 | const char *arg_start = p; | |
23985 | ||
23986 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23987 | p++; | |
23988 | ||
23989 | if (! *p || p == arg_start) | |
4d3c2250 | 23990 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23991 | else |
23992 | { | |
23993 | /* Make sure argv has room for the new argument. */ | |
23994 | if (argc >= argv_size) | |
23995 | { | |
23996 | argv_size *= 2; | |
224c3ddb | 23997 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
23998 | } |
23999 | ||
3f8a7804 | 24000 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24001 | } |
24002 | ||
24003 | p = consume_improper_spaces (p, body); | |
24004 | ||
24005 | /* Consume the comma, if present. */ | |
24006 | if (*p == ',') | |
24007 | { | |
24008 | p++; | |
24009 | ||
24010 | p = consume_improper_spaces (p, body); | |
24011 | } | |
24012 | } | |
24013 | ||
24014 | if (*p == ')') | |
24015 | { | |
24016 | p++; | |
24017 | ||
24018 | if (*p == ' ') | |
24019 | /* Perfectly formed definition, no complaints. */ | |
24020 | macro_define_function (file, line, name, | |
6e70227d | 24021 | argc, (const char **) argv, |
2e276125 JB |
24022 | p + 1); |
24023 | else if (*p == '\0') | |
24024 | { | |
24025 | /* Complain, but do define it. */ | |
4d3c2250 | 24026 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24027 | macro_define_function (file, line, name, |
6e70227d | 24028 | argc, (const char **) argv, |
2e276125 JB |
24029 | p); |
24030 | } | |
24031 | else | |
24032 | /* Just complain. */ | |
4d3c2250 | 24033 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24034 | } |
24035 | else | |
24036 | /* Just complain. */ | |
4d3c2250 | 24037 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24038 | |
24039 | xfree (name); | |
24040 | { | |
24041 | int i; | |
24042 | ||
24043 | for (i = 0; i < argc; i++) | |
24044 | xfree (argv[i]); | |
24045 | } | |
24046 | xfree (argv); | |
24047 | } | |
24048 | else | |
4d3c2250 | 24049 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24050 | } |
24051 | ||
cf2c3c16 TT |
24052 | /* Skip some bytes from BYTES according to the form given in FORM. |
24053 | Returns the new pointer. */ | |
2e276125 | 24054 | |
d521ce57 TT |
24055 | static const gdb_byte * |
24056 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24057 | enum dwarf_form form, |
24058 | unsigned int offset_size, | |
24059 | struct dwarf2_section_info *section) | |
2e276125 | 24060 | { |
cf2c3c16 | 24061 | unsigned int bytes_read; |
2e276125 | 24062 | |
cf2c3c16 | 24063 | switch (form) |
2e276125 | 24064 | { |
cf2c3c16 TT |
24065 | case DW_FORM_data1: |
24066 | case DW_FORM_flag: | |
24067 | ++bytes; | |
24068 | break; | |
24069 | ||
24070 | case DW_FORM_data2: | |
24071 | bytes += 2; | |
24072 | break; | |
24073 | ||
24074 | case DW_FORM_data4: | |
24075 | bytes += 4; | |
24076 | break; | |
24077 | ||
24078 | case DW_FORM_data8: | |
24079 | bytes += 8; | |
24080 | break; | |
24081 | ||
0224619f JK |
24082 | case DW_FORM_data16: |
24083 | bytes += 16; | |
24084 | break; | |
24085 | ||
cf2c3c16 TT |
24086 | case DW_FORM_string: |
24087 | read_direct_string (abfd, bytes, &bytes_read); | |
24088 | bytes += bytes_read; | |
24089 | break; | |
24090 | ||
24091 | case DW_FORM_sec_offset: | |
24092 | case DW_FORM_strp: | |
36586728 | 24093 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24094 | bytes += offset_size; |
24095 | break; | |
24096 | ||
24097 | case DW_FORM_block: | |
24098 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24099 | bytes += bytes_read; | |
24100 | break; | |
24101 | ||
24102 | case DW_FORM_block1: | |
24103 | bytes += 1 + read_1_byte (abfd, bytes); | |
24104 | break; | |
24105 | case DW_FORM_block2: | |
24106 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24107 | break; | |
24108 | case DW_FORM_block4: | |
24109 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24110 | break; | |
24111 | ||
24112 | case DW_FORM_sdata: | |
24113 | case DW_FORM_udata: | |
3019eac3 DE |
24114 | case DW_FORM_GNU_addr_index: |
24115 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24116 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24117 | if (bytes == NULL) |
24118 | { | |
24119 | dwarf2_section_buffer_overflow_complaint (section); | |
24120 | return NULL; | |
24121 | } | |
cf2c3c16 TT |
24122 | break; |
24123 | ||
663c44ac JK |
24124 | case DW_FORM_implicit_const: |
24125 | break; | |
24126 | ||
cf2c3c16 TT |
24127 | default: |
24128 | { | |
cf2c3c16 TT |
24129 | complaint (&symfile_complaints, |
24130 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 24131 | form, get_section_name (section)); |
cf2c3c16 TT |
24132 | return NULL; |
24133 | } | |
2e276125 JB |
24134 | } |
24135 | ||
cf2c3c16 TT |
24136 | return bytes; |
24137 | } | |
757a13d0 | 24138 | |
cf2c3c16 TT |
24139 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24140 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24141 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24142 | |
d521ce57 | 24143 | static const gdb_byte * |
cf2c3c16 | 24144 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24145 | const gdb_byte **opcode_definitions, |
24146 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24147 | bfd *abfd, |
24148 | unsigned int offset_size, | |
24149 | struct dwarf2_section_info *section) | |
24150 | { | |
24151 | unsigned int bytes_read, i; | |
24152 | unsigned long arg; | |
d521ce57 | 24153 | const gdb_byte *defn; |
2e276125 | 24154 | |
cf2c3c16 | 24155 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24156 | { |
cf2c3c16 TT |
24157 | complaint (&symfile_complaints, |
24158 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
24159 | opcode); | |
24160 | return NULL; | |
24161 | } | |
2e276125 | 24162 | |
cf2c3c16 TT |
24163 | defn = opcode_definitions[opcode]; |
24164 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24165 | defn += bytes_read; | |
2e276125 | 24166 | |
cf2c3c16 TT |
24167 | for (i = 0; i < arg; ++i) |
24168 | { | |
aead7601 SM |
24169 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24170 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24171 | section); |
cf2c3c16 TT |
24172 | if (mac_ptr == NULL) |
24173 | { | |
24174 | /* skip_form_bytes already issued the complaint. */ | |
24175 | return NULL; | |
24176 | } | |
24177 | } | |
757a13d0 | 24178 | |
cf2c3c16 TT |
24179 | return mac_ptr; |
24180 | } | |
757a13d0 | 24181 | |
cf2c3c16 TT |
24182 | /* A helper function which parses the header of a macro section. |
24183 | If the macro section is the extended (for now called "GNU") type, | |
24184 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24185 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24186 | |
d521ce57 TT |
24187 | static const gdb_byte * |
24188 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24189 | bfd *abfd, |
d521ce57 | 24190 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24191 | unsigned int *offset_size, |
24192 | int section_is_gnu) | |
24193 | { | |
24194 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24195 | |
cf2c3c16 TT |
24196 | if (section_is_gnu) |
24197 | { | |
24198 | unsigned int version, flags; | |
757a13d0 | 24199 | |
cf2c3c16 | 24200 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24201 | if (version != 4 && version != 5) |
cf2c3c16 TT |
24202 | { |
24203 | complaint (&symfile_complaints, | |
24204 | _("unrecognized version `%d' in .debug_macro section"), | |
24205 | version); | |
24206 | return NULL; | |
24207 | } | |
24208 | mac_ptr += 2; | |
757a13d0 | 24209 | |
cf2c3c16 TT |
24210 | flags = read_1_byte (abfd, mac_ptr); |
24211 | ++mac_ptr; | |
24212 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24213 | |
cf2c3c16 TT |
24214 | if ((flags & 2) != 0) |
24215 | /* We don't need the line table offset. */ | |
24216 | mac_ptr += *offset_size; | |
757a13d0 | 24217 | |
cf2c3c16 TT |
24218 | /* Vendor opcode descriptions. */ |
24219 | if ((flags & 4) != 0) | |
24220 | { | |
24221 | unsigned int i, count; | |
757a13d0 | 24222 | |
cf2c3c16 TT |
24223 | count = read_1_byte (abfd, mac_ptr); |
24224 | ++mac_ptr; | |
24225 | for (i = 0; i < count; ++i) | |
24226 | { | |
24227 | unsigned int opcode, bytes_read; | |
24228 | unsigned long arg; | |
24229 | ||
24230 | opcode = read_1_byte (abfd, mac_ptr); | |
24231 | ++mac_ptr; | |
24232 | opcode_definitions[opcode] = mac_ptr; | |
24233 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24234 | mac_ptr += bytes_read; | |
24235 | mac_ptr += arg; | |
24236 | } | |
757a13d0 | 24237 | } |
cf2c3c16 | 24238 | } |
757a13d0 | 24239 | |
cf2c3c16 TT |
24240 | return mac_ptr; |
24241 | } | |
757a13d0 | 24242 | |
cf2c3c16 | 24243 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24244 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24245 | |
24246 | static void | |
ed2dc618 SM |
24247 | dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile, |
24248 | bfd *abfd, | |
d521ce57 | 24249 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24250 | struct macro_source_file *current_file, |
43f3e411 | 24251 | struct line_header *lh, |
cf2c3c16 | 24252 | struct dwarf2_section_info *section, |
36586728 | 24253 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24254 | unsigned int offset_size, |
8fc3fc34 | 24255 | htab_t include_hash) |
cf2c3c16 | 24256 | { |
4d663531 | 24257 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24258 | enum dwarf_macro_record_type macinfo_type; |
24259 | int at_commandline; | |
d521ce57 | 24260 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24261 | |
cf2c3c16 TT |
24262 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24263 | &offset_size, section_is_gnu); | |
24264 | if (mac_ptr == NULL) | |
24265 | { | |
24266 | /* We already issued a complaint. */ | |
24267 | return; | |
24268 | } | |
757a13d0 JK |
24269 | |
24270 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24271 | GDB is still reading the definitions from command line. First | |
24272 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24273 | to create CURRENT_FILE for the main source holding also the command line | |
24274 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24275 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24276 | ||
24277 | at_commandline = 1; | |
24278 | ||
24279 | do | |
24280 | { | |
24281 | /* Do we at least have room for a macinfo type byte? */ | |
24282 | if (mac_ptr >= mac_end) | |
24283 | { | |
f664829e | 24284 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24285 | break; |
24286 | } | |
24287 | ||
aead7601 | 24288 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24289 | mac_ptr++; |
24290 | ||
cf2c3c16 TT |
24291 | /* Note that we rely on the fact that the corresponding GNU and |
24292 | DWARF constants are the same. */ | |
132448f8 SM |
24293 | DIAGNOSTIC_PUSH |
24294 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24295 | switch (macinfo_type) |
24296 | { | |
24297 | /* A zero macinfo type indicates the end of the macro | |
24298 | information. */ | |
24299 | case 0: | |
24300 | break; | |
2e276125 | 24301 | |
0af92d60 JK |
24302 | case DW_MACRO_define: |
24303 | case DW_MACRO_undef: | |
24304 | case DW_MACRO_define_strp: | |
24305 | case DW_MACRO_undef_strp: | |
24306 | case DW_MACRO_define_sup: | |
24307 | case DW_MACRO_undef_sup: | |
2e276125 | 24308 | { |
891d2f0b | 24309 | unsigned int bytes_read; |
2e276125 | 24310 | int line; |
d521ce57 | 24311 | const char *body; |
cf2c3c16 | 24312 | int is_define; |
2e276125 | 24313 | |
cf2c3c16 TT |
24314 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24315 | mac_ptr += bytes_read; | |
24316 | ||
0af92d60 JK |
24317 | if (macinfo_type == DW_MACRO_define |
24318 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24319 | { |
24320 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24321 | mac_ptr += bytes_read; | |
24322 | } | |
24323 | else | |
24324 | { | |
24325 | LONGEST str_offset; | |
24326 | ||
24327 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24328 | mac_ptr += offset_size; | |
2e276125 | 24329 | |
0af92d60 JK |
24330 | if (macinfo_type == DW_MACRO_define_sup |
24331 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24332 | || section_is_dwz) |
36586728 | 24333 | { |
ed2dc618 SM |
24334 | struct dwz_file *dwz |
24335 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24336 | |
ed2dc618 SM |
24337 | body = read_indirect_string_from_dwz (objfile, |
24338 | dwz, str_offset); | |
36586728 TT |
24339 | } |
24340 | else | |
ed2dc618 SM |
24341 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24342 | abfd, str_offset); | |
cf2c3c16 TT |
24343 | } |
24344 | ||
0af92d60 JK |
24345 | is_define = (macinfo_type == DW_MACRO_define |
24346 | || macinfo_type == DW_MACRO_define_strp | |
24347 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24348 | if (! current_file) |
757a13d0 JK |
24349 | { |
24350 | /* DWARF violation as no main source is present. */ | |
24351 | complaint (&symfile_complaints, | |
24352 | _("debug info with no main source gives macro %s " | |
24353 | "on line %d: %s"), | |
cf2c3c16 TT |
24354 | is_define ? _("definition") : _("undefinition"), |
24355 | line, body); | |
757a13d0 JK |
24356 | break; |
24357 | } | |
3e43a32a MS |
24358 | if ((line == 0 && !at_commandline) |
24359 | || (line != 0 && at_commandline)) | |
4d3c2250 | 24360 | complaint (&symfile_complaints, |
757a13d0 JK |
24361 | _("debug info gives %s macro %s with %s line %d: %s"), |
24362 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 24363 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24364 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24365 | ||
cf2c3c16 | 24366 | if (is_define) |
757a13d0 | 24367 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24368 | else |
24369 | { | |
0af92d60 JK |
24370 | gdb_assert (macinfo_type == DW_MACRO_undef |
24371 | || macinfo_type == DW_MACRO_undef_strp | |
24372 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24373 | macro_undef (current_file, line, body); |
24374 | } | |
2e276125 JB |
24375 | } |
24376 | break; | |
24377 | ||
0af92d60 | 24378 | case DW_MACRO_start_file: |
2e276125 | 24379 | { |
891d2f0b | 24380 | unsigned int bytes_read; |
2e276125 JB |
24381 | int line, file; |
24382 | ||
24383 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24384 | mac_ptr += bytes_read; | |
24385 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24386 | mac_ptr += bytes_read; | |
24387 | ||
3e43a32a MS |
24388 | if ((line == 0 && !at_commandline) |
24389 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
24390 | complaint (&symfile_complaints, |
24391 | _("debug info gives source %d included " | |
24392 | "from %s at %s line %d"), | |
24393 | file, at_commandline ? _("command-line") : _("file"), | |
24394 | line == 0 ? _("zero") : _("non-zero"), line); | |
24395 | ||
24396 | if (at_commandline) | |
24397 | { | |
0af92d60 | 24398 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24399 | pass one. */ |
757a13d0 JK |
24400 | at_commandline = 0; |
24401 | } | |
24402 | else | |
43f3e411 | 24403 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
24404 | } |
24405 | break; | |
24406 | ||
0af92d60 | 24407 | case DW_MACRO_end_file: |
2e276125 | 24408 | if (! current_file) |
4d3c2250 | 24409 | complaint (&symfile_complaints, |
3e43a32a MS |
24410 | _("macro debug info has an unmatched " |
24411 | "`close_file' directive")); | |
2e276125 JB |
24412 | else |
24413 | { | |
24414 | current_file = current_file->included_by; | |
24415 | if (! current_file) | |
24416 | { | |
cf2c3c16 | 24417 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24418 | |
24419 | /* GCC circa March 2002 doesn't produce the zero | |
24420 | type byte marking the end of the compilation | |
24421 | unit. Complain if it's not there, but exit no | |
24422 | matter what. */ | |
24423 | ||
24424 | /* Do we at least have room for a macinfo type byte? */ | |
24425 | if (mac_ptr >= mac_end) | |
24426 | { | |
f664829e | 24427 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24428 | return; |
24429 | } | |
24430 | ||
24431 | /* We don't increment mac_ptr here, so this is just | |
24432 | a look-ahead. */ | |
aead7601 SM |
24433 | next_type |
24434 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24435 | mac_ptr); | |
2e276125 | 24436 | if (next_type != 0) |
4d3c2250 | 24437 | complaint (&symfile_complaints, |
3e43a32a MS |
24438 | _("no terminating 0-type entry for " |
24439 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
24440 | |
24441 | return; | |
24442 | } | |
24443 | } | |
24444 | break; | |
24445 | ||
0af92d60 JK |
24446 | case DW_MACRO_import: |
24447 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24448 | { |
24449 | LONGEST offset; | |
8fc3fc34 | 24450 | void **slot; |
a036ba48 TT |
24451 | bfd *include_bfd = abfd; |
24452 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24453 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24454 | int is_dwz = section_is_dwz; |
d521ce57 | 24455 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24456 | |
24457 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24458 | mac_ptr += offset_size; | |
24459 | ||
0af92d60 | 24460 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24461 | { |
ed2dc618 | 24462 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24463 | |
4d663531 | 24464 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24465 | |
a036ba48 | 24466 | include_section = &dwz->macro; |
a32a8923 | 24467 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24468 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24469 | is_dwz = 1; | |
24470 | } | |
24471 | ||
24472 | new_mac_ptr = include_section->buffer + offset; | |
24473 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24474 | ||
8fc3fc34 TT |
24475 | if (*slot != NULL) |
24476 | { | |
24477 | /* This has actually happened; see | |
24478 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
24479 | complaint (&symfile_complaints, | |
0af92d60 | 24480 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24481 | ".debug_macro section")); |
24482 | } | |
24483 | else | |
24484 | { | |
d521ce57 | 24485 | *slot = (void *) new_mac_ptr; |
36586728 | 24486 | |
ed2dc618 SM |
24487 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24488 | include_bfd, new_mac_ptr, | |
43f3e411 | 24489 | include_mac_end, current_file, lh, |
36586728 | 24490 | section, section_is_gnu, is_dwz, |
4d663531 | 24491 | offset_size, include_hash); |
8fc3fc34 | 24492 | |
d521ce57 | 24493 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24494 | } |
cf2c3c16 TT |
24495 | } |
24496 | break; | |
24497 | ||
2e276125 | 24498 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24499 | if (!section_is_gnu) |
24500 | { | |
24501 | unsigned int bytes_read; | |
2e276125 | 24502 | |
ac298888 TT |
24503 | /* This reads the constant, but since we don't recognize |
24504 | any vendor extensions, we ignore it. */ | |
24505 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24506 | mac_ptr += bytes_read; |
24507 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24508 | mac_ptr += bytes_read; | |
2e276125 | 24509 | |
cf2c3c16 TT |
24510 | /* We don't recognize any vendor extensions. */ |
24511 | break; | |
24512 | } | |
24513 | /* FALLTHROUGH */ | |
24514 | ||
24515 | default: | |
24516 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24517 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24518 | section); |
24519 | if (mac_ptr == NULL) | |
24520 | return; | |
24521 | break; | |
2e276125 | 24522 | } |
132448f8 | 24523 | DIAGNOSTIC_POP |
757a13d0 | 24524 | } while (macinfo_type != 0); |
2e276125 | 24525 | } |
8e19ed76 | 24526 | |
cf2c3c16 | 24527 | static void |
09262596 | 24528 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24529 | int section_is_gnu) |
cf2c3c16 | 24530 | { |
518817b3 SM |
24531 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24532 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24533 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24534 | struct line_header *lh = cu->line_header; |
24535 | bfd *abfd; | |
d521ce57 | 24536 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24537 | struct macro_source_file *current_file = 0; |
24538 | enum dwarf_macro_record_type macinfo_type; | |
24539 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24540 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24541 | void **slot; |
09262596 DE |
24542 | struct dwarf2_section_info *section; |
24543 | const char *section_name; | |
24544 | ||
24545 | if (cu->dwo_unit != NULL) | |
24546 | { | |
24547 | if (section_is_gnu) | |
24548 | { | |
24549 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24550 | section_name = ".debug_macro.dwo"; | |
24551 | } | |
24552 | else | |
24553 | { | |
24554 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24555 | section_name = ".debug_macinfo.dwo"; | |
24556 | } | |
24557 | } | |
24558 | else | |
24559 | { | |
24560 | if (section_is_gnu) | |
24561 | { | |
24562 | section = &dwarf2_per_objfile->macro; | |
24563 | section_name = ".debug_macro"; | |
24564 | } | |
24565 | else | |
24566 | { | |
24567 | section = &dwarf2_per_objfile->macinfo; | |
24568 | section_name = ".debug_macinfo"; | |
24569 | } | |
24570 | } | |
cf2c3c16 | 24571 | |
bb5ed363 | 24572 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24573 | if (section->buffer == NULL) |
24574 | { | |
fceca515 | 24575 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
24576 | return; |
24577 | } | |
a32a8923 | 24578 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24579 | |
24580 | /* First pass: Find the name of the base filename. | |
24581 | This filename is needed in order to process all macros whose definition | |
24582 | (or undefinition) comes from the command line. These macros are defined | |
24583 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24584 | associated to the base file. | |
24585 | ||
24586 | To determine the base file name, we scan the macro definitions until we | |
24587 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24588 | CURRENT_FILE accordingly so that any macro definition found before the | |
24589 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24590 | ||
24591 | mac_ptr = section->buffer + offset; | |
24592 | mac_end = section->buffer + section->size; | |
24593 | ||
24594 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24595 | &offset_size, section_is_gnu); | |
24596 | if (mac_ptr == NULL) | |
24597 | { | |
24598 | /* We already issued a complaint. */ | |
24599 | return; | |
24600 | } | |
24601 | ||
24602 | do | |
24603 | { | |
24604 | /* Do we at least have room for a macinfo type byte? */ | |
24605 | if (mac_ptr >= mac_end) | |
24606 | { | |
24607 | /* Complaint is printed during the second pass as GDB will probably | |
24608 | stop the first pass earlier upon finding | |
24609 | DW_MACINFO_start_file. */ | |
24610 | break; | |
24611 | } | |
24612 | ||
aead7601 | 24613 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24614 | mac_ptr++; |
24615 | ||
24616 | /* Note that we rely on the fact that the corresponding GNU and | |
24617 | DWARF constants are the same. */ | |
132448f8 SM |
24618 | DIAGNOSTIC_PUSH |
24619 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24620 | switch (macinfo_type) |
24621 | { | |
24622 | /* A zero macinfo type indicates the end of the macro | |
24623 | information. */ | |
24624 | case 0: | |
24625 | break; | |
24626 | ||
0af92d60 JK |
24627 | case DW_MACRO_define: |
24628 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24629 | /* Only skip the data by MAC_PTR. */ |
24630 | { | |
24631 | unsigned int bytes_read; | |
24632 | ||
24633 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24634 | mac_ptr += bytes_read; | |
24635 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24636 | mac_ptr += bytes_read; | |
24637 | } | |
24638 | break; | |
24639 | ||
0af92d60 | 24640 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24641 | { |
24642 | unsigned int bytes_read; | |
24643 | int line, file; | |
24644 | ||
24645 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24646 | mac_ptr += bytes_read; | |
24647 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24648 | mac_ptr += bytes_read; | |
24649 | ||
43f3e411 | 24650 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
24651 | } |
24652 | break; | |
24653 | ||
0af92d60 | 24654 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24655 | /* No data to skip by MAC_PTR. */ |
24656 | break; | |
24657 | ||
0af92d60 JK |
24658 | case DW_MACRO_define_strp: |
24659 | case DW_MACRO_undef_strp: | |
24660 | case DW_MACRO_define_sup: | |
24661 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24662 | { |
24663 | unsigned int bytes_read; | |
24664 | ||
24665 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24666 | mac_ptr += bytes_read; | |
24667 | mac_ptr += offset_size; | |
24668 | } | |
24669 | break; | |
24670 | ||
0af92d60 JK |
24671 | case DW_MACRO_import: |
24672 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24673 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24674 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24675 | skip this opcode. */ |
24676 | mac_ptr += offset_size; | |
24677 | break; | |
24678 | ||
24679 | case DW_MACINFO_vendor_ext: | |
24680 | /* Only skip the data by MAC_PTR. */ | |
24681 | if (!section_is_gnu) | |
24682 | { | |
24683 | unsigned int bytes_read; | |
24684 | ||
24685 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24686 | mac_ptr += bytes_read; | |
24687 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24688 | mac_ptr += bytes_read; | |
24689 | } | |
24690 | /* FALLTHROUGH */ | |
24691 | ||
24692 | default: | |
24693 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24694 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24695 | section); |
24696 | if (mac_ptr == NULL) | |
24697 | return; | |
24698 | break; | |
24699 | } | |
132448f8 | 24700 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24701 | } while (macinfo_type != 0 && current_file == NULL); |
24702 | ||
24703 | /* Second pass: Process all entries. | |
24704 | ||
24705 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24706 | command-line macro definitions/undefinitions. This flag is unset when we | |
24707 | reach the first DW_MACINFO_start_file entry. */ | |
24708 | ||
fc4007c9 TT |
24709 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24710 | htab_eq_pointer, | |
24711 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24712 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24713 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24714 | *slot = (void *) mac_ptr; |
ed2dc618 SM |
24715 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24716 | abfd, mac_ptr, mac_end, | |
43f3e411 | 24717 | current_file, lh, section, |
fc4007c9 TT |
24718 | section_is_gnu, 0, offset_size, |
24719 | include_hash.get ()); | |
cf2c3c16 TT |
24720 | } |
24721 | ||
8e19ed76 | 24722 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24723 | if so return true else false. */ |
380bca97 | 24724 | |
8e19ed76 | 24725 | static int |
6e5a29e1 | 24726 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24727 | { |
24728 | return (attr == NULL ? 0 : | |
24729 | attr->form == DW_FORM_block1 | |
24730 | || attr->form == DW_FORM_block2 | |
24731 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24732 | || attr->form == DW_FORM_block |
24733 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24734 | } |
4c2df51b | 24735 | |
c6a0999f JB |
24736 | /* Return non-zero if ATTR's value is a section offset --- classes |
24737 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24738 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24739 | ||
24740 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24741 | may have a value that belongs to more than one of these classes; it | |
24742 | would be ambiguous if we did, because we use the same forms for all | |
24743 | of them. */ | |
380bca97 | 24744 | |
3690dd37 | 24745 | static int |
6e5a29e1 | 24746 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24747 | { |
24748 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24749 | || attr->form == DW_FORM_data8 |
24750 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24751 | } |
24752 | ||
3690dd37 JB |
24753 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24754 | zero otherwise. When this function returns true, you can apply | |
24755 | dwarf2_get_attr_constant_value to it. | |
24756 | ||
24757 | However, note that for some attributes you must check | |
24758 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24759 | and DW_FORM_data8 are members of both the constant class, and of | |
24760 | the classes that contain offsets into other debug sections | |
24761 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24762 | that, if an attribute's can be either a constant or one of the | |
24763 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24764 | taken as section offsets, not constants. |
24765 | ||
24766 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24767 | cannot handle that. */ | |
380bca97 | 24768 | |
3690dd37 | 24769 | static int |
6e5a29e1 | 24770 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24771 | { |
24772 | switch (attr->form) | |
24773 | { | |
24774 | case DW_FORM_sdata: | |
24775 | case DW_FORM_udata: | |
24776 | case DW_FORM_data1: | |
24777 | case DW_FORM_data2: | |
24778 | case DW_FORM_data4: | |
24779 | case DW_FORM_data8: | |
663c44ac | 24780 | case DW_FORM_implicit_const: |
3690dd37 JB |
24781 | return 1; |
24782 | default: | |
24783 | return 0; | |
24784 | } | |
24785 | } | |
24786 | ||
7771576e SA |
24787 | |
24788 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24789 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24790 | ||
24791 | static int | |
6e5a29e1 | 24792 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24793 | { |
24794 | switch (attr->form) | |
24795 | { | |
24796 | case DW_FORM_ref_addr: | |
24797 | case DW_FORM_ref1: | |
24798 | case DW_FORM_ref2: | |
24799 | case DW_FORM_ref4: | |
24800 | case DW_FORM_ref8: | |
24801 | case DW_FORM_ref_udata: | |
24802 | case DW_FORM_GNU_ref_alt: | |
24803 | return 1; | |
24804 | default: | |
24805 | return 0; | |
24806 | } | |
24807 | } | |
24808 | ||
3019eac3 DE |
24809 | /* Return the .debug_loc section to use for CU. |
24810 | For DWO files use .debug_loc.dwo. */ | |
24811 | ||
24812 | static struct dwarf2_section_info * | |
24813 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24814 | { | |
518817b3 SM |
24815 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24816 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24817 | |
3019eac3 | 24818 | if (cu->dwo_unit) |
43988095 JK |
24819 | { |
24820 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24821 | ||
24822 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24823 | } | |
24824 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24825 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24826 | } |
24827 | ||
8cf6f0b1 TT |
24828 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24829 | ||
24830 | static void | |
24831 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24832 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24833 | const struct attribute *attr) |
8cf6f0b1 | 24834 | { |
518817b3 SM |
24835 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24836 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24837 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24838 | ||
24839 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24840 | |
24841 | baton->per_cu = cu->per_cu; | |
24842 | gdb_assert (baton->per_cu); | |
24843 | /* We don't know how long the location list is, but make sure we | |
24844 | don't run off the edge of the section. */ | |
3019eac3 DE |
24845 | baton->size = section->size - DW_UNSND (attr); |
24846 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24847 | baton->base_address = cu->base_address; |
f664829e | 24848 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24849 | } |
24850 | ||
4c2df51b | 24851 | static void |
ff39bb5e | 24852 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24853 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24854 | { |
518817b3 SM |
24855 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24856 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24857 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24858 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24859 | |
3690dd37 | 24860 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24861 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24862 | the section. If so, fall through to the complaint in the |
24863 | other branch. */ | |
3019eac3 | 24864 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24865 | { |
0d53c4c4 | 24866 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24867 | |
8d749320 | 24868 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24869 | |
8cf6f0b1 | 24870 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24871 | |
d00adf39 | 24872 | if (cu->base_known == 0) |
0d53c4c4 | 24873 | complaint (&symfile_complaints, |
3e43a32a MS |
24874 | _("Location list used without " |
24875 | "specifying the CU base address.")); | |
4c2df51b | 24876 | |
f1e6e072 TT |
24877 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24878 | ? dwarf2_loclist_block_index | |
24879 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24880 | SYMBOL_LOCATION_BATON (sym) = baton; |
24881 | } | |
24882 | else | |
24883 | { | |
24884 | struct dwarf2_locexpr_baton *baton; | |
24885 | ||
8d749320 | 24886 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24887 | baton->per_cu = cu->per_cu; |
24888 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24889 | |
24890 | if (attr_form_is_block (attr)) | |
24891 | { | |
24892 | /* Note that we're just copying the block's data pointer | |
24893 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24894 | info_buffer for SYM's objfile; right now we never release |
24895 | that buffer, but when we do clean up properly this may | |
24896 | need to change. */ | |
0d53c4c4 DJ |
24897 | baton->size = DW_BLOCK (attr)->size; |
24898 | baton->data = DW_BLOCK (attr)->data; | |
24899 | } | |
24900 | else | |
24901 | { | |
24902 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24903 | SYMBOL_NATURAL_NAME (sym)); | |
24904 | baton->size = 0; | |
0d53c4c4 | 24905 | } |
6e70227d | 24906 | |
f1e6e072 TT |
24907 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24908 | ? dwarf2_locexpr_block_index | |
24909 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24910 | SYMBOL_LOCATION_BATON (sym) = baton; |
24911 | } | |
4c2df51b | 24912 | } |
6502dd73 | 24913 | |
9aa1f1e3 TT |
24914 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24915 | came from a separate debuginfo file, then the master objfile is | |
24916 | returned. */ | |
ae0d2f24 UW |
24917 | |
24918 | struct objfile * | |
24919 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24920 | { | |
e3b94546 | 24921 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24922 | |
24923 | /* Return the master objfile, so that we can report and look up the | |
24924 | correct file containing this variable. */ | |
24925 | if (objfile->separate_debug_objfile_backlink) | |
24926 | objfile = objfile->separate_debug_objfile_backlink; | |
24927 | ||
24928 | return objfile; | |
24929 | } | |
24930 | ||
96408a79 SA |
24931 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24932 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24933 | CU_HEADERP first. */ | |
24934 | ||
24935 | static const struct comp_unit_head * | |
24936 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24937 | struct dwarf2_per_cu_data *per_cu) | |
24938 | { | |
d521ce57 | 24939 | const gdb_byte *info_ptr; |
96408a79 SA |
24940 | |
24941 | if (per_cu->cu) | |
24942 | return &per_cu->cu->header; | |
24943 | ||
9c541725 | 24944 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24945 | |
24946 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24947 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24948 | rcuh_kind::COMPILE); | |
96408a79 SA |
24949 | |
24950 | return cu_headerp; | |
24951 | } | |
24952 | ||
ae0d2f24 UW |
24953 | /* Return the address size given in the compilation unit header for CU. */ |
24954 | ||
98714339 | 24955 | int |
ae0d2f24 UW |
24956 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
24957 | { | |
96408a79 SA |
24958 | struct comp_unit_head cu_header_local; |
24959 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24960 | |
96408a79 SA |
24961 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24962 | ||
24963 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24964 | } |
24965 | ||
9eae7c52 TT |
24966 | /* Return the offset size given in the compilation unit header for CU. */ |
24967 | ||
24968 | int | |
24969 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
24970 | { | |
96408a79 SA |
24971 | struct comp_unit_head cu_header_local; |
24972 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24973 | |
96408a79 SA |
24974 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24975 | ||
24976 | return cu_headerp->offset_size; | |
24977 | } | |
24978 | ||
24979 | /* See its dwarf2loc.h declaration. */ | |
24980 | ||
24981 | int | |
24982 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
24983 | { | |
24984 | struct comp_unit_head cu_header_local; | |
24985 | const struct comp_unit_head *cu_headerp; | |
24986 | ||
24987 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
24988 | ||
24989 | if (cu_headerp->version == 2) | |
24990 | return cu_headerp->addr_size; | |
24991 | else | |
24992 | return cu_headerp->offset_size; | |
181cebd4 JK |
24993 | } |
24994 | ||
9aa1f1e3 TT |
24995 | /* Return the text offset of the CU. The returned offset comes from |
24996 | this CU's objfile. If this objfile came from a separate debuginfo | |
24997 | file, then the offset may be different from the corresponding | |
24998 | offset in the parent objfile. */ | |
24999 | ||
25000 | CORE_ADDR | |
25001 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25002 | { | |
e3b94546 | 25003 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25004 | |
25005 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25006 | } | |
25007 | ||
43988095 JK |
25008 | /* Return DWARF version number of PER_CU. */ |
25009 | ||
25010 | short | |
25011 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25012 | { | |
25013 | return per_cu->dwarf_version; | |
25014 | } | |
25015 | ||
348e048f DE |
25016 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25017 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25018 | |
25019 | static struct dwarf2_per_cu_data * | |
9c541725 | 25020 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25021 | unsigned int offset_in_dwz, |
ed2dc618 | 25022 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25023 | { |
25024 | struct dwarf2_per_cu_data *this_cu; | |
25025 | int low, high; | |
36586728 | 25026 | const sect_offset *cu_off; |
ae038cb0 | 25027 | |
ae038cb0 DJ |
25028 | low = 0; |
25029 | high = dwarf2_per_objfile->n_comp_units - 1; | |
25030 | while (high > low) | |
25031 | { | |
36586728 | 25032 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25033 | int mid = low + (high - low) / 2; |
9a619af0 | 25034 | |
36586728 | 25035 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 25036 | cu_off = &mid_cu->sect_off; |
36586728 | 25037 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 25038 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
25039 | high = mid; |
25040 | else | |
25041 | low = mid + 1; | |
25042 | } | |
25043 | gdb_assert (low == high); | |
36586728 | 25044 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
25045 | cu_off = &this_cu->sect_off; |
25046 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 25047 | { |
36586728 | 25048 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25049 | error (_("Dwarf Error: could not find partial DIE containing " |
9c541725 | 25050 | "offset 0x%x [in module %s]"), |
ed2dc618 SM |
25051 | to_underlying (sect_off), |
25052 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); | |
10b3939b | 25053 | |
9c541725 PA |
25054 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25055 | <= sect_off); | |
ae038cb0 DJ |
25056 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25057 | } | |
25058 | else | |
25059 | { | |
25060 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
25061 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9c541725 PA |
25062 | && sect_off >= this_cu->sect_off + this_cu->length) |
25063 | error (_("invalid dwarf2 offset %u"), to_underlying (sect_off)); | |
25064 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); | |
ae038cb0 DJ |
25065 | return this_cu; |
25066 | } | |
25067 | } | |
25068 | ||
23745b47 | 25069 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25070 | |
fcd3b13d SM |
25071 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25072 | : per_cu (per_cu_), | |
25073 | mark (0), | |
25074 | has_loclist (0), | |
25075 | checked_producer (0), | |
25076 | producer_is_gxx_lt_4_6 (0), | |
25077 | producer_is_gcc_lt_4_3 (0), | |
25078 | producer_is_icc_lt_14 (0), | |
25079 | processing_has_namespace_info (0) | |
93311388 | 25080 | { |
fcd3b13d SM |
25081 | per_cu->cu = this; |
25082 | } | |
25083 | ||
25084 | /* Destroy a dwarf2_cu. */ | |
25085 | ||
25086 | dwarf2_cu::~dwarf2_cu () | |
25087 | { | |
25088 | per_cu->cu = NULL; | |
9816fde3 JK |
25089 | } |
25090 | ||
25091 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25092 | ||
25093 | static void | |
95554aad TT |
25094 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25095 | enum language pretend_language) | |
9816fde3 JK |
25096 | { |
25097 | struct attribute *attr; | |
25098 | ||
25099 | /* Set the language we're debugging. */ | |
25100 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25101 | if (attr) | |
25102 | set_cu_language (DW_UNSND (attr), cu); | |
25103 | else | |
9cded63f | 25104 | { |
95554aad | 25105 | cu->language = pretend_language; |
9cded63f TT |
25106 | cu->language_defn = language_def (cu->language); |
25107 | } | |
dee91e82 | 25108 | |
7d45c7c3 | 25109 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25110 | } |
25111 | ||
ae038cb0 DJ |
25112 | /* Free all cached compilation units. */ |
25113 | ||
25114 | static void | |
25115 | free_cached_comp_units (void *data) | |
25116 | { | |
ed2dc618 SM |
25117 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25118 | = (struct dwarf2_per_objfile *) data; | |
25119 | ||
330cdd98 | 25120 | dwarf2_per_objfile->free_cached_comp_units (); |
ae038cb0 DJ |
25121 | } |
25122 | ||
25123 | /* Increase the age counter on each cached compilation unit, and free | |
25124 | any that are too old. */ | |
25125 | ||
25126 | static void | |
ed2dc618 | 25127 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25128 | { |
25129 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25130 | ||
25131 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25132 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25133 | while (per_cu != NULL) | |
25134 | { | |
25135 | per_cu->cu->last_used ++; | |
b4f54984 | 25136 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25137 | dwarf2_mark (per_cu->cu); |
25138 | per_cu = per_cu->cu->read_in_chain; | |
25139 | } | |
25140 | ||
25141 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25142 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25143 | while (per_cu != NULL) | |
25144 | { | |
25145 | struct dwarf2_per_cu_data *next_cu; | |
25146 | ||
25147 | next_cu = per_cu->cu->read_in_chain; | |
25148 | ||
25149 | if (!per_cu->cu->mark) | |
25150 | { | |
fcd3b13d | 25151 | delete per_cu->cu; |
ae038cb0 DJ |
25152 | *last_chain = next_cu; |
25153 | } | |
25154 | else | |
25155 | last_chain = &per_cu->cu->read_in_chain; | |
25156 | ||
25157 | per_cu = next_cu; | |
25158 | } | |
25159 | } | |
25160 | ||
25161 | /* Remove a single compilation unit from the cache. */ | |
25162 | ||
25163 | static void | |
dee91e82 | 25164 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25165 | { |
25166 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25167 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25168 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25169 | |
25170 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25171 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25172 | while (per_cu != NULL) | |
25173 | { | |
25174 | struct dwarf2_per_cu_data *next_cu; | |
25175 | ||
25176 | next_cu = per_cu->cu->read_in_chain; | |
25177 | ||
dee91e82 | 25178 | if (per_cu == target_per_cu) |
ae038cb0 | 25179 | { |
fcd3b13d | 25180 | delete per_cu->cu; |
dee91e82 | 25181 | per_cu->cu = NULL; |
ae038cb0 DJ |
25182 | *last_chain = next_cu; |
25183 | break; | |
25184 | } | |
25185 | else | |
25186 | last_chain = &per_cu->cu->read_in_chain; | |
25187 | ||
25188 | per_cu = next_cu; | |
25189 | } | |
25190 | } | |
25191 | ||
fe3e1990 DJ |
25192 | /* Release all extra memory associated with OBJFILE. */ |
25193 | ||
25194 | void | |
25195 | dwarf2_free_objfile (struct objfile *objfile) | |
25196 | { | |
ed2dc618 SM |
25197 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25198 | = get_dwarf2_per_objfile (objfile); | |
fe3e1990 DJ |
25199 | |
25200 | if (dwarf2_per_objfile == NULL) | |
25201 | return; | |
25202 | ||
330cdd98 | 25203 | dwarf2_per_objfile->~dwarf2_per_objfile (); |
fe3e1990 DJ |
25204 | } |
25205 | ||
dee91e82 DE |
25206 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25207 | We store these in a hash table separate from the DIEs, and preserve them | |
25208 | when the DIEs are flushed out of cache. | |
25209 | ||
25210 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25211 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25212 | or the type may come from a DWO file. Furthermore, while it's more logical |
25213 | to use per_cu->section+offset, with Fission the section with the data is in | |
25214 | the DWO file but we don't know that section at the point we need it. | |
25215 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25216 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25217 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25218 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25219 | |
dee91e82 | 25220 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25221 | { |
dee91e82 | 25222 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25223 | sect_offset sect_off; |
1c379e20 DJ |
25224 | struct type *type; |
25225 | }; | |
25226 | ||
dee91e82 | 25227 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25228 | |
25229 | static hashval_t | |
dee91e82 | 25230 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25231 | { |
9a3c8263 SM |
25232 | const struct dwarf2_per_cu_offset_and_type *ofs |
25233 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25234 | |
9c541725 | 25235 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25236 | } |
25237 | ||
dee91e82 | 25238 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25239 | |
25240 | static int | |
dee91e82 | 25241 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25242 | { |
9a3c8263 SM |
25243 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25244 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25245 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25246 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25247 | |
dee91e82 | 25248 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25249 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25250 | } |
25251 | ||
25252 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25253 | table if necessary. For convenience, return TYPE. |
25254 | ||
25255 | The DIEs reading must have careful ordering to: | |
25256 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25257 | reading current DIE. | |
25258 | * Not trying to dereference contents of still incompletely read in types | |
25259 | while reading in other DIEs. | |
25260 | * Enable referencing still incompletely read in types just by a pointer to | |
25261 | the type without accessing its fields. | |
25262 | ||
25263 | Therefore caller should follow these rules: | |
25264 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25265 | before building the type and calling set_die_type. | |
e71ec853 | 25266 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25267 | possible before fetching more types to complete the current type. |
25268 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25269 | |
f792889a | 25270 | static struct type * |
1c379e20 DJ |
25271 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25272 | { | |
518817b3 SM |
25273 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25274 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25275 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25276 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25277 | struct attribute *attr; |
25278 | struct dynamic_prop prop; | |
1c379e20 | 25279 | |
b4ba55a1 JB |
25280 | /* For Ada types, make sure that the gnat-specific data is always |
25281 | initialized (if not already set). There are a few types where | |
25282 | we should not be doing so, because the type-specific area is | |
25283 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25284 | where the type-specific area is used to store the floatformat). | |
25285 | But this is not a problem, because the gnat-specific information | |
25286 | is actually not needed for these types. */ | |
25287 | if (need_gnat_info (cu) | |
25288 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25289 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25290 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25291 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25292 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25293 | && !HAVE_GNAT_AUX_INFO (type)) |
25294 | INIT_GNAT_SPECIFIC (type); | |
25295 | ||
3f2f83dd KB |
25296 | /* Read DW_AT_allocated and set in type. */ |
25297 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25298 | if (attr_form_is_block (attr)) | |
25299 | { | |
25300 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25301 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25302 | } |
25303 | else if (attr != NULL) | |
25304 | { | |
25305 | complaint (&symfile_complaints, | |
9c541725 PA |
25306 | _("DW_AT_allocated has the wrong form (%s) at DIE 0x%x"), |
25307 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
25308 | to_underlying (die->sect_off)); | |
3f2f83dd KB |
25309 | } |
25310 | ||
25311 | /* Read DW_AT_associated and set in type. */ | |
25312 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25313 | if (attr_form_is_block (attr)) | |
25314 | { | |
25315 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25316 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25317 | } |
25318 | else if (attr != NULL) | |
25319 | { | |
25320 | complaint (&symfile_complaints, | |
9c541725 PA |
25321 | _("DW_AT_associated has the wrong form (%s) at DIE 0x%x"), |
25322 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
25323 | to_underlying (die->sect_off)); | |
3f2f83dd KB |
25324 | } |
25325 | ||
3cdcd0ce JB |
25326 | /* Read DW_AT_data_location and set in type. */ |
25327 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25328 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25329 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25330 | |
dee91e82 | 25331 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25332 | { |
dee91e82 DE |
25333 | dwarf2_per_objfile->die_type_hash = |
25334 | htab_create_alloc_ex (127, | |
25335 | per_cu_offset_and_type_hash, | |
25336 | per_cu_offset_and_type_eq, | |
25337 | NULL, | |
25338 | &objfile->objfile_obstack, | |
25339 | hashtab_obstack_allocate, | |
25340 | dummy_obstack_deallocate); | |
f792889a | 25341 | } |
1c379e20 | 25342 | |
dee91e82 | 25343 | ofs.per_cu = cu->per_cu; |
9c541725 | 25344 | ofs.sect_off = die->sect_off; |
1c379e20 | 25345 | ofs.type = type; |
dee91e82 DE |
25346 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25347 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
25348 | if (*slot) |
25349 | complaint (&symfile_complaints, | |
25350 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
9c541725 | 25351 | to_underlying (die->sect_off)); |
8d749320 SM |
25352 | *slot = XOBNEW (&objfile->objfile_obstack, |
25353 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25354 | **slot = ofs; |
f792889a | 25355 | return type; |
1c379e20 DJ |
25356 | } |
25357 | ||
9c541725 | 25358 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25359 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25360 | |
25361 | static struct type * | |
9c541725 | 25362 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25363 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25364 | { |
dee91e82 | 25365 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25366 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25367 | |
dee91e82 | 25368 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25369 | return NULL; |
1c379e20 | 25370 | |
dee91e82 | 25371 | ofs.per_cu = per_cu; |
9c541725 | 25372 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25373 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25374 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25375 | if (slot) |
25376 | return slot->type; | |
25377 | else | |
25378 | return NULL; | |
25379 | } | |
25380 | ||
02142a6c | 25381 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25382 | or return NULL if DIE does not have a saved type. */ |
25383 | ||
25384 | static struct type * | |
25385 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25386 | { | |
9c541725 | 25387 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25388 | } |
25389 | ||
10b3939b DJ |
25390 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25391 | ||
25392 | static void | |
25393 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25394 | struct dwarf2_per_cu_data *ref_per_cu) | |
25395 | { | |
25396 | void **slot; | |
25397 | ||
25398 | if (cu->dependencies == NULL) | |
25399 | cu->dependencies | |
25400 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25401 | NULL, &cu->comp_unit_obstack, | |
25402 | hashtab_obstack_allocate, | |
25403 | dummy_obstack_deallocate); | |
25404 | ||
25405 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25406 | if (*slot == NULL) | |
25407 | *slot = ref_per_cu; | |
25408 | } | |
1c379e20 | 25409 | |
f504f079 DE |
25410 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25411 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25412 | cache that we must keep because we are keeping CU. */ |
25413 | ||
10b3939b DJ |
25414 | static int |
25415 | dwarf2_mark_helper (void **slot, void *data) | |
25416 | { | |
25417 | struct dwarf2_per_cu_data *per_cu; | |
25418 | ||
25419 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25420 | |
25421 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25422 | reading of the chain. As such dependencies remain valid it is not much | |
25423 | useful to track and undo them during QUIT cleanups. */ | |
25424 | if (per_cu->cu == NULL) | |
25425 | return 1; | |
25426 | ||
10b3939b DJ |
25427 | if (per_cu->cu->mark) |
25428 | return 1; | |
25429 | per_cu->cu->mark = 1; | |
25430 | ||
25431 | if (per_cu->cu->dependencies != NULL) | |
25432 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25433 | ||
25434 | return 1; | |
25435 | } | |
25436 | ||
f504f079 DE |
25437 | /* Set the mark field in CU and in every other compilation unit in the |
25438 | cache that we must keep because we are keeping CU. */ | |
25439 | ||
ae038cb0 DJ |
25440 | static void |
25441 | dwarf2_mark (struct dwarf2_cu *cu) | |
25442 | { | |
25443 | if (cu->mark) | |
25444 | return; | |
25445 | cu->mark = 1; | |
10b3939b DJ |
25446 | if (cu->dependencies != NULL) |
25447 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25448 | } |
25449 | ||
25450 | static void | |
25451 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25452 | { | |
25453 | while (per_cu) | |
25454 | { | |
25455 | per_cu->cu->mark = 0; | |
25456 | per_cu = per_cu->cu->read_in_chain; | |
25457 | } | |
72bf9492 DJ |
25458 | } |
25459 | ||
72bf9492 DJ |
25460 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25461 | is its offset in .debug_info for this objfile. */ | |
25462 | ||
25463 | static hashval_t | |
25464 | partial_die_hash (const void *item) | |
25465 | { | |
9a3c8263 SM |
25466 | const struct partial_die_info *part_die |
25467 | = (const struct partial_die_info *) item; | |
9a619af0 | 25468 | |
9c541725 | 25469 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25470 | } |
25471 | ||
25472 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25473 | are equal if they have the same offset. */ | |
25474 | ||
25475 | static int | |
25476 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25477 | { | |
9a3c8263 SM |
25478 | const struct partial_die_info *part_die_lhs |
25479 | = (const struct partial_die_info *) item_lhs; | |
25480 | const struct partial_die_info *part_die_rhs | |
25481 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25482 | |
9c541725 | 25483 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25484 | } |
25485 | ||
b4f54984 DE |
25486 | static struct cmd_list_element *set_dwarf_cmdlist; |
25487 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25488 | |
25489 | static void | |
981a3fb3 | 25490 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25491 | { |
b4f54984 | 25492 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25493 | gdb_stdout); |
ae038cb0 DJ |
25494 | } |
25495 | ||
25496 | static void | |
981a3fb3 | 25497 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25498 | { |
b4f54984 | 25499 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25500 | } |
25501 | ||
ae2de4f8 | 25502 | /* The "save gdb-index" command. */ |
9291a0cd | 25503 | |
437afbb8 JK |
25504 | /* Write SIZE bytes from the buffer pointed to by DATA to FILE, with |
25505 | error checking. */ | |
25506 | ||
25507 | static void | |
25508 | file_write (FILE *file, const void *data, size_t size) | |
25509 | { | |
25510 | if (fwrite (data, 1, size, file) != size) | |
25511 | error (_("couldn't data write to file")); | |
25512 | } | |
25513 | ||
25514 | /* Write the contents of VEC to FILE, with error checking. */ | |
25515 | ||
25516 | template<typename Elem, typename Alloc> | |
25517 | static void | |
25518 | file_write (FILE *file, const std::vector<Elem, Alloc> &vec) | |
25519 | { | |
25520 | file_write (file, vec.data (), vec.size () * sizeof (vec[0])); | |
25521 | } | |
25522 | ||
bc8f2430 JK |
25523 | /* In-memory buffer to prepare data to be written later to a file. */ |
25524 | class data_buf | |
9291a0cd | 25525 | { |
bc8f2430 | 25526 | public: |
bc8f2430 JK |
25527 | /* Copy DATA to the end of the buffer. */ |
25528 | template<typename T> | |
25529 | void append_data (const T &data) | |
25530 | { | |
25531 | std::copy (reinterpret_cast<const gdb_byte *> (&data), | |
25532 | reinterpret_cast<const gdb_byte *> (&data + 1), | |
c2f134ac | 25533 | grow (sizeof (data))); |
bc8f2430 | 25534 | } |
b89be57b | 25535 | |
c2f134ac PA |
25536 | /* Copy CSTR (a zero-terminated string) to the end of buffer. The |
25537 | terminating zero is appended too. */ | |
bc8f2430 JK |
25538 | void append_cstr0 (const char *cstr) |
25539 | { | |
25540 | const size_t size = strlen (cstr) + 1; | |
c2f134ac PA |
25541 | std::copy (cstr, cstr + size, grow (size)); |
25542 | } | |
25543 | ||
437afbb8 JK |
25544 | /* Store INPUT as ULEB128 to the end of buffer. */ |
25545 | void append_unsigned_leb128 (ULONGEST input) | |
25546 | { | |
25547 | for (;;) | |
25548 | { | |
25549 | gdb_byte output = input & 0x7f; | |
25550 | input >>= 7; | |
25551 | if (input) | |
25552 | output |= 0x80; | |
25553 | append_data (output); | |
25554 | if (input == 0) | |
25555 | break; | |
25556 | } | |
25557 | } | |
25558 | ||
c2f134ac PA |
25559 | /* Accept a host-format integer in VAL and append it to the buffer |
25560 | as a target-format integer which is LEN bytes long. */ | |
25561 | void append_uint (size_t len, bfd_endian byte_order, ULONGEST val) | |
25562 | { | |
25563 | ::store_unsigned_integer (grow (len), len, byte_order, val); | |
bc8f2430 | 25564 | } |
9291a0cd | 25565 | |
bc8f2430 JK |
25566 | /* Return the size of the buffer. */ |
25567 | size_t size () const | |
25568 | { | |
25569 | return m_vec.size (); | |
25570 | } | |
25571 | ||
437afbb8 JK |
25572 | /* Return true iff the buffer is empty. */ |
25573 | bool empty () const | |
25574 | { | |
25575 | return m_vec.empty (); | |
25576 | } | |
25577 | ||
bc8f2430 JK |
25578 | /* Write the buffer to FILE. */ |
25579 | void file_write (FILE *file) const | |
25580 | { | |
437afbb8 | 25581 | ::file_write (file, m_vec); |
bc8f2430 JK |
25582 | } |
25583 | ||
25584 | private: | |
c2f134ac PA |
25585 | /* Grow SIZE bytes at the end of the buffer. Returns a pointer to |
25586 | the start of the new block. */ | |
25587 | gdb_byte *grow (size_t size) | |
25588 | { | |
25589 | m_vec.resize (m_vec.size () + size); | |
25590 | return &*m_vec.end () - size; | |
25591 | } | |
25592 | ||
d5722aa2 | 25593 | gdb::byte_vector m_vec; |
bc8f2430 | 25594 | }; |
9291a0cd TT |
25595 | |
25596 | /* An entry in the symbol table. */ | |
25597 | struct symtab_index_entry | |
25598 | { | |
25599 | /* The name of the symbol. */ | |
25600 | const char *name; | |
25601 | /* The offset of the name in the constant pool. */ | |
25602 | offset_type index_offset; | |
25603 | /* A sorted vector of the indices of all the CUs that hold an object | |
25604 | of this name. */ | |
bc8f2430 | 25605 | std::vector<offset_type> cu_indices; |
9291a0cd TT |
25606 | }; |
25607 | ||
25608 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
25609 | struct mapped_symtab | |
25610 | { | |
bc8f2430 JK |
25611 | mapped_symtab () |
25612 | { | |
25613 | data.resize (1024); | |
25614 | } | |
b89be57b | 25615 | |
bc8f2430 | 25616 | offset_type n_elements = 0; |
4b76cda9 | 25617 | std::vector<symtab_index_entry> data; |
bc8f2430 | 25618 | }; |
9291a0cd | 25619 | |
bc8f2430 | 25620 | /* Find a slot in SYMTAB for the symbol NAME. Returns a reference to |
559a7a62 JK |
25621 | the slot. |
25622 | ||
25623 | Function is used only during write_hash_table so no index format backward | |
25624 | compatibility is needed. */ | |
b89be57b | 25625 | |
4b76cda9 | 25626 | static symtab_index_entry & |
9291a0cd TT |
25627 | find_slot (struct mapped_symtab *symtab, const char *name) |
25628 | { | |
559a7a62 | 25629 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd | 25630 | |
bc8f2430 JK |
25631 | index = hash & (symtab->data.size () - 1); |
25632 | step = ((hash * 17) & (symtab->data.size () - 1)) | 1; | |
9291a0cd TT |
25633 | |
25634 | for (;;) | |
25635 | { | |
4b76cda9 PA |
25636 | if (symtab->data[index].name == NULL |
25637 | || strcmp (name, symtab->data[index].name) == 0) | |
bc8f2430 JK |
25638 | return symtab->data[index]; |
25639 | index = (index + step) & (symtab->data.size () - 1); | |
9291a0cd TT |
25640 | } |
25641 | } | |
25642 | ||
25643 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 25644 | |
9291a0cd TT |
25645 | static void |
25646 | hash_expand (struct mapped_symtab *symtab) | |
25647 | { | |
bc8f2430 | 25648 | auto old_entries = std::move (symtab->data); |
9291a0cd | 25649 | |
bc8f2430 JK |
25650 | symtab->data.clear (); |
25651 | symtab->data.resize (old_entries.size () * 2); | |
9291a0cd | 25652 | |
bc8f2430 | 25653 | for (auto &it : old_entries) |
4b76cda9 | 25654 | if (it.name != NULL) |
bc8f2430 | 25655 | { |
4b76cda9 | 25656 | auto &ref = find_slot (symtab, it.name); |
bc8f2430 JK |
25657 | ref = std::move (it); |
25658 | } | |
9291a0cd TT |
25659 | } |
25660 | ||
156942c7 DE |
25661 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
25662 | CU_INDEX is the index of the CU in which the symbol appears. | |
25663 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 25664 | |
9291a0cd TT |
25665 | static void |
25666 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 25667 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
25668 | offset_type cu_index) |
25669 | { | |
156942c7 | 25670 | offset_type cu_index_and_attrs; |
9291a0cd TT |
25671 | |
25672 | ++symtab->n_elements; | |
bc8f2430 | 25673 | if (4 * symtab->n_elements / 3 >= symtab->data.size ()) |
9291a0cd TT |
25674 | hash_expand (symtab); |
25675 | ||
4b76cda9 PA |
25676 | symtab_index_entry &slot = find_slot (symtab, name); |
25677 | if (slot.name == NULL) | |
9291a0cd | 25678 | { |
4b76cda9 | 25679 | slot.name = name; |
156942c7 | 25680 | /* index_offset is set later. */ |
9291a0cd | 25681 | } |
156942c7 DE |
25682 | |
25683 | cu_index_and_attrs = 0; | |
25684 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
25685 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
25686 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
25687 | ||
25688 | /* We don't want to record an index value twice as we want to avoid the | |
25689 | duplication. | |
25690 | We process all global symbols and then all static symbols | |
25691 | (which would allow us to avoid the duplication by only having to check | |
25692 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
25693 | To keep things simple we don't worry about the duplication here and | |
25694 | sort and uniqufy the list after we've processed all symbols. */ | |
4b76cda9 | 25695 | slot.cu_indices.push_back (cu_index_and_attrs); |
156942c7 DE |
25696 | } |
25697 | ||
25698 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
25699 | ||
25700 | static void | |
25701 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
25702 | { | |
4b76cda9 | 25703 | for (auto &entry : symtab->data) |
156942c7 | 25704 | { |
4b76cda9 | 25705 | if (entry.name != NULL && !entry.cu_indices.empty ()) |
156942c7 | 25706 | { |
4b76cda9 | 25707 | auto &cu_indices = entry.cu_indices; |
6fd931f2 PA |
25708 | std::sort (cu_indices.begin (), cu_indices.end ()); |
25709 | auto from = std::unique (cu_indices.begin (), cu_indices.end ()); | |
25710 | cu_indices.erase (from, cu_indices.end ()); | |
156942c7 DE |
25711 | } |
25712 | } | |
9291a0cd TT |
25713 | } |
25714 | ||
bc8f2430 JK |
25715 | /* A form of 'const char *' suitable for container keys. Only the |
25716 | pointer is stored. The strings themselves are compared, not the | |
25717 | pointers. */ | |
25718 | class c_str_view | |
9291a0cd | 25719 | { |
bc8f2430 JK |
25720 | public: |
25721 | c_str_view (const char *cstr) | |
25722 | : m_cstr (cstr) | |
25723 | {} | |
9291a0cd | 25724 | |
bc8f2430 JK |
25725 | bool operator== (const c_str_view &other) const |
25726 | { | |
25727 | return strcmp (m_cstr, other.m_cstr) == 0; | |
25728 | } | |
9291a0cd | 25729 | |
437afbb8 JK |
25730 | /* Return the underlying C string. Note, the returned string is |
25731 | only a reference with lifetime of this object. */ | |
25732 | const char *c_str () const | |
25733 | { | |
25734 | return m_cstr; | |
25735 | } | |
25736 | ||
bc8f2430 JK |
25737 | private: |
25738 | friend class c_str_view_hasher; | |
25739 | const char *const m_cstr; | |
25740 | }; | |
9291a0cd | 25741 | |
bc8f2430 JK |
25742 | /* A std::unordered_map::hasher for c_str_view that uses the right |
25743 | hash function for strings in a mapped index. */ | |
25744 | class c_str_view_hasher | |
25745 | { | |
25746 | public: | |
25747 | size_t operator () (const c_str_view &x) const | |
25748 | { | |
25749 | return mapped_index_string_hash (INT_MAX, x.m_cstr); | |
25750 | } | |
25751 | }; | |
b89be57b | 25752 | |
bc8f2430 JK |
25753 | /* A std::unordered_map::hasher for std::vector<>. */ |
25754 | template<typename T> | |
25755 | class vector_hasher | |
9291a0cd | 25756 | { |
bc8f2430 JK |
25757 | public: |
25758 | size_t operator () (const std::vector<T> &key) const | |
25759 | { | |
25760 | return iterative_hash (key.data (), | |
25761 | sizeof (key.front ()) * key.size (), 0); | |
25762 | } | |
25763 | }; | |
9291a0cd | 25764 | |
bc8f2430 JK |
25765 | /* Write the mapped hash table SYMTAB to the data buffer OUTPUT, with |
25766 | constant pool entries going into the data buffer CPOOL. */ | |
3876f04e | 25767 | |
bc8f2430 JK |
25768 | static void |
25769 | write_hash_table (mapped_symtab *symtab, data_buf &output, data_buf &cpool) | |
25770 | { | |
25771 | { | |
25772 | /* Elements are sorted vectors of the indices of all the CUs that | |
25773 | hold an object of this name. */ | |
25774 | std::unordered_map<std::vector<offset_type>, offset_type, | |
25775 | vector_hasher<offset_type>> | |
25776 | symbol_hash_table; | |
25777 | ||
25778 | /* We add all the index vectors to the constant pool first, to | |
25779 | ensure alignment is ok. */ | |
4b76cda9 | 25780 | for (symtab_index_entry &entry : symtab->data) |
bc8f2430 | 25781 | { |
4b76cda9 | 25782 | if (entry.name == NULL) |
bc8f2430 | 25783 | continue; |
4b76cda9 | 25784 | gdb_assert (entry.index_offset == 0); |
70a1152b PA |
25785 | |
25786 | /* Finding before inserting is faster than always trying to | |
25787 | insert, because inserting always allocates a node, does the | |
25788 | lookup, and then destroys the new node if another node | |
25789 | already had the same key. C++17 try_emplace will avoid | |
25790 | this. */ | |
25791 | const auto found | |
4b76cda9 | 25792 | = symbol_hash_table.find (entry.cu_indices); |
70a1152b PA |
25793 | if (found != symbol_hash_table.end ()) |
25794 | { | |
4b76cda9 | 25795 | entry.index_offset = found->second; |
70a1152b PA |
25796 | continue; |
25797 | } | |
25798 | ||
4b76cda9 PA |
25799 | symbol_hash_table.emplace (entry.cu_indices, cpool.size ()); |
25800 | entry.index_offset = cpool.size (); | |
25801 | cpool.append_data (MAYBE_SWAP (entry.cu_indices.size ())); | |
25802 | for (const auto index : entry.cu_indices) | |
25803 | cpool.append_data (MAYBE_SWAP (index)); | |
bc8f2430 JK |
25804 | } |
25805 | } | |
9291a0cd TT |
25806 | |
25807 | /* Now write out the hash table. */ | |
bc8f2430 | 25808 | std::unordered_map<c_str_view, offset_type, c_str_view_hasher> str_table; |
4b76cda9 | 25809 | for (const auto &entry : symtab->data) |
9291a0cd TT |
25810 | { |
25811 | offset_type str_off, vec_off; | |
25812 | ||
4b76cda9 | 25813 | if (entry.name != NULL) |
9291a0cd | 25814 | { |
4b76cda9 | 25815 | const auto insertpair = str_table.emplace (entry.name, cpool.size ()); |
bc8f2430 | 25816 | if (insertpair.second) |
4b76cda9 | 25817 | cpool.append_cstr0 (entry.name); |
bc8f2430 | 25818 | str_off = insertpair.first->second; |
4b76cda9 | 25819 | vec_off = entry.index_offset; |
9291a0cd TT |
25820 | } |
25821 | else | |
25822 | { | |
25823 | /* While 0 is a valid constant pool index, it is not valid | |
25824 | to have 0 for both offsets. */ | |
25825 | str_off = 0; | |
25826 | vec_off = 0; | |
25827 | } | |
25828 | ||
bc8f2430 JK |
25829 | output.append_data (MAYBE_SWAP (str_off)); |
25830 | output.append_data (MAYBE_SWAP (vec_off)); | |
9291a0cd | 25831 | } |
9291a0cd TT |
25832 | } |
25833 | ||
bc8f2430 | 25834 | typedef std::unordered_map<partial_symtab *, unsigned int> psym_index_map; |
0a5429f6 DE |
25835 | |
25836 | /* Helper struct for building the address table. */ | |
25837 | struct addrmap_index_data | |
25838 | { | |
bc8f2430 JK |
25839 | addrmap_index_data (data_buf &addr_vec_, psym_index_map &cu_index_htab_) |
25840 | : addr_vec (addr_vec_), cu_index_htab (cu_index_htab_) | |
25841 | {} | |
25842 | ||
0a5429f6 | 25843 | struct objfile *objfile; |
bc8f2430 JK |
25844 | data_buf &addr_vec; |
25845 | psym_index_map &cu_index_htab; | |
0a5429f6 DE |
25846 | |
25847 | /* Non-zero if the previous_* fields are valid. | |
25848 | We can't write an entry until we see the next entry (since it is only then | |
25849 | that we know the end of the entry). */ | |
25850 | int previous_valid; | |
25851 | /* Index of the CU in the table of all CUs in the index file. */ | |
25852 | unsigned int previous_cu_index; | |
0963b4bd | 25853 | /* Start address of the CU. */ |
0a5429f6 DE |
25854 | CORE_ADDR previous_cu_start; |
25855 | }; | |
25856 | ||
bc8f2430 | 25857 | /* Write an address entry to ADDR_VEC. */ |
b89be57b | 25858 | |
9291a0cd | 25859 | static void |
bc8f2430 | 25860 | add_address_entry (struct objfile *objfile, data_buf &addr_vec, |
0a5429f6 | 25861 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) |
9291a0cd | 25862 | { |
9291a0cd TT |
25863 | CORE_ADDR baseaddr; |
25864 | ||
25865 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25866 | ||
c2f134ac PA |
25867 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, start - baseaddr); |
25868 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
bc8f2430 | 25869 | addr_vec.append_data (MAYBE_SWAP (cu_index)); |
0a5429f6 DE |
25870 | } |
25871 | ||
25872 | /* Worker function for traversing an addrmap to build the address table. */ | |
25873 | ||
25874 | static int | |
25875 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
25876 | { | |
9a3c8263 SM |
25877 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
25878 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
25879 | |
25880 | if (data->previous_valid) | |
bc8f2430 | 25881 | add_address_entry (data->objfile, data->addr_vec, |
0a5429f6 DE |
25882 | data->previous_cu_start, start_addr, |
25883 | data->previous_cu_index); | |
25884 | ||
25885 | data->previous_cu_start = start_addr; | |
25886 | if (pst != NULL) | |
25887 | { | |
bc8f2430 JK |
25888 | const auto it = data->cu_index_htab.find (pst); |
25889 | gdb_assert (it != data->cu_index_htab.cend ()); | |
25890 | data->previous_cu_index = it->second; | |
0a5429f6 DE |
25891 | data->previous_valid = 1; |
25892 | } | |
25893 | else | |
bc8f2430 | 25894 | data->previous_valid = 0; |
0a5429f6 DE |
25895 | |
25896 | return 0; | |
25897 | } | |
25898 | ||
bc8f2430 | 25899 | /* Write OBJFILE's address map to ADDR_VEC. |
0a5429f6 DE |
25900 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices |
25901 | in the index file. */ | |
25902 | ||
25903 | static void | |
bc8f2430 JK |
25904 | write_address_map (struct objfile *objfile, data_buf &addr_vec, |
25905 | psym_index_map &cu_index_htab) | |
0a5429f6 | 25906 | { |
bc8f2430 | 25907 | struct addrmap_index_data addrmap_index_data (addr_vec, cu_index_htab); |
0a5429f6 DE |
25908 | |
25909 | /* When writing the address table, we have to cope with the fact that | |
25910 | the addrmap iterator only provides the start of a region; we have to | |
25911 | wait until the next invocation to get the start of the next region. */ | |
25912 | ||
25913 | addrmap_index_data.objfile = objfile; | |
0a5429f6 DE |
25914 | addrmap_index_data.previous_valid = 0; |
25915 | ||
25916 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
25917 | &addrmap_index_data); | |
25918 | ||
25919 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
25920 | is valid, but we should still handle it. | |
25921 | The end address is recorded as the start of the next region, but that | |
25922 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
25923 | anyway. */ | |
25924 | if (addrmap_index_data.previous_valid) | |
bc8f2430 | 25925 | add_address_entry (objfile, addr_vec, |
0a5429f6 DE |
25926 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, |
25927 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
25928 | } |
25929 | ||
156942c7 DE |
25930 | /* Return the symbol kind of PSYM. */ |
25931 | ||
25932 | static gdb_index_symbol_kind | |
25933 | symbol_kind (struct partial_symbol *psym) | |
25934 | { | |
25935 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
25936 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
25937 | ||
25938 | switch (domain) | |
25939 | { | |
25940 | case VAR_DOMAIN: | |
25941 | switch (aclass) | |
25942 | { | |
25943 | case LOC_BLOCK: | |
25944 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
25945 | case LOC_TYPEDEF: | |
25946 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
25947 | case LOC_COMPUTED: | |
25948 | case LOC_CONST_BYTES: | |
25949 | case LOC_OPTIMIZED_OUT: | |
25950 | case LOC_STATIC: | |
25951 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
25952 | case LOC_CONST: | |
25953 | /* Note: It's currently impossible to recognize psyms as enum values | |
25954 | short of reading the type info. For now punt. */ | |
25955 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
25956 | default: | |
25957 | /* There are other LOC_FOO values that one might want to classify | |
25958 | as variables, but dwarf2read.c doesn't currently use them. */ | |
25959 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
25960 | } | |
25961 | case STRUCT_DOMAIN: | |
25962 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
25963 | default: | |
25964 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
25965 | } | |
25966 | } | |
25967 | ||
9291a0cd | 25968 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 25969 | |
9291a0cd TT |
25970 | static void |
25971 | write_psymbols (struct mapped_symtab *symtab, | |
bc8f2430 | 25972 | std::unordered_set<partial_symbol *> &psyms_seen, |
9291a0cd TT |
25973 | struct partial_symbol **psymp, |
25974 | int count, | |
987d643c TT |
25975 | offset_type cu_index, |
25976 | int is_static) | |
9291a0cd TT |
25977 | { |
25978 | for (; count-- > 0; ++psymp) | |
25979 | { | |
156942c7 | 25980 | struct partial_symbol *psym = *psymp; |
987d643c | 25981 | |
156942c7 | 25982 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 25983 | error (_("Ada is not currently supported by the index")); |
987d643c | 25984 | |
987d643c | 25985 | /* Only add a given psymbol once. */ |
bc8f2430 | 25986 | if (psyms_seen.insert (psym).second) |
987d643c | 25987 | { |
156942c7 DE |
25988 | gdb_index_symbol_kind kind = symbol_kind (psym); |
25989 | ||
156942c7 DE |
25990 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), |
25991 | is_static, kind, cu_index); | |
987d643c | 25992 | } |
9291a0cd TT |
25993 | } |
25994 | } | |
25995 | ||
1fd400ff TT |
25996 | /* A helper struct used when iterating over debug_types. */ |
25997 | struct signatured_type_index_data | |
25998 | { | |
bc8f2430 JK |
25999 | signatured_type_index_data (data_buf &types_list_, |
26000 | std::unordered_set<partial_symbol *> &psyms_seen_) | |
26001 | : types_list (types_list_), psyms_seen (psyms_seen_) | |
26002 | {} | |
26003 | ||
1fd400ff TT |
26004 | struct objfile *objfile; |
26005 | struct mapped_symtab *symtab; | |
bc8f2430 JK |
26006 | data_buf &types_list; |
26007 | std::unordered_set<partial_symbol *> &psyms_seen; | |
1fd400ff TT |
26008 | int cu_index; |
26009 | }; | |
26010 | ||
26011 | /* A helper function that writes a single signatured_type to an | |
26012 | obstack. */ | |
b89be57b | 26013 | |
1fd400ff TT |
26014 | static int |
26015 | write_one_signatured_type (void **slot, void *d) | |
26016 | { | |
9a3c8263 SM |
26017 | struct signatured_type_index_data *info |
26018 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 26019 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 26020 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
26021 | |
26022 | write_psymbols (info->symtab, | |
987d643c | 26023 | info->psyms_seen, |
af5bf4ad | 26024 | &info->objfile->global_psymbols[psymtab->globals_offset], |
987d643c TT |
26025 | psymtab->n_global_syms, info->cu_index, |
26026 | 0); | |
1fd400ff | 26027 | write_psymbols (info->symtab, |
987d643c | 26028 | info->psyms_seen, |
af5bf4ad | 26029 | &info->objfile->static_psymbols[psymtab->statics_offset], |
987d643c TT |
26030 | psymtab->n_static_syms, info->cu_index, |
26031 | 1); | |
1fd400ff | 26032 | |
c2f134ac PA |
26033 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, |
26034 | to_underlying (entry->per_cu.sect_off)); | |
26035 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, | |
26036 | to_underlying (entry->type_offset_in_tu)); | |
26037 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, entry->signature); | |
1fd400ff TT |
26038 | |
26039 | ++info->cu_index; | |
26040 | ||
26041 | return 1; | |
26042 | } | |
26043 | ||
e8f8bcb3 PA |
26044 | /* Recurse into all "included" dependencies and count their symbols as |
26045 | if they appeared in this psymtab. */ | |
26046 | ||
26047 | static void | |
26048 | recursively_count_psymbols (struct partial_symtab *psymtab, | |
26049 | size_t &psyms_seen) | |
26050 | { | |
26051 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26052 | if (psymtab->dependencies[i]->user != NULL) | |
26053 | recursively_count_psymbols (psymtab->dependencies[i], | |
26054 | psyms_seen); | |
26055 | ||
26056 | psyms_seen += psymtab->n_global_syms; | |
26057 | psyms_seen += psymtab->n_static_syms; | |
26058 | } | |
26059 | ||
95554aad TT |
26060 | /* Recurse into all "included" dependencies and write their symbols as |
26061 | if they appeared in this psymtab. */ | |
26062 | ||
26063 | static void | |
26064 | recursively_write_psymbols (struct objfile *objfile, | |
26065 | struct partial_symtab *psymtab, | |
26066 | struct mapped_symtab *symtab, | |
bc8f2430 | 26067 | std::unordered_set<partial_symbol *> &psyms_seen, |
95554aad TT |
26068 | offset_type cu_index) |
26069 | { | |
26070 | int i; | |
26071 | ||
26072 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
26073 | if (psymtab->dependencies[i]->user != NULL) | |
26074 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26075 | symtab, psyms_seen, cu_index); | |
26076 | ||
26077 | write_psymbols (symtab, | |
26078 | psyms_seen, | |
af5bf4ad | 26079 | &objfile->global_psymbols[psymtab->globals_offset], |
95554aad TT |
26080 | psymtab->n_global_syms, cu_index, |
26081 | 0); | |
26082 | write_psymbols (symtab, | |
26083 | psyms_seen, | |
af5bf4ad | 26084 | &objfile->static_psymbols[psymtab->statics_offset], |
95554aad TT |
26085 | psymtab->n_static_syms, cu_index, |
26086 | 1); | |
26087 | } | |
26088 | ||
437afbb8 JK |
26089 | /* DWARF-5 .debug_names builder. */ |
26090 | class debug_names | |
26091 | { | |
26092 | public: | |
ed2dc618 SM |
26093 | debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, bool is_dwarf64, |
26094 | bfd_endian dwarf5_byte_order) | |
437afbb8 JK |
26095 | : m_dwarf5_byte_order (dwarf5_byte_order), |
26096 | m_dwarf32 (dwarf5_byte_order), | |
26097 | m_dwarf64 (dwarf5_byte_order), | |
26098 | m_dwarf (is_dwarf64 | |
26099 | ? static_cast<dwarf &> (m_dwarf64) | |
26100 | : static_cast<dwarf &> (m_dwarf32)), | |
26101 | m_name_table_string_offs (m_dwarf.name_table_string_offs), | |
ed2dc618 SM |
26102 | m_name_table_entry_offs (m_dwarf.name_table_entry_offs), |
26103 | m_debugstrlookup (dwarf2_per_objfile) | |
437afbb8 | 26104 | {} |
9291a0cd | 26105 | |
8af5c486 JK |
26106 | int dwarf5_offset_size () const |
26107 | { | |
26108 | const bool dwarf5_is_dwarf64 = &m_dwarf == &m_dwarf64; | |
26109 | return dwarf5_is_dwarf64 ? 8 : 4; | |
26110 | } | |
26111 | ||
26112 | /* Is this symbol from DW_TAG_compile_unit or DW_TAG_type_unit? */ | |
26113 | enum class unit_kind { cu, tu }; | |
26114 | ||
437afbb8 | 26115 | /* Insert one symbol. */ |
8af5c486 JK |
26116 | void insert (const partial_symbol *psym, int cu_index, bool is_static, |
26117 | unit_kind kind) | |
437afbb8 JK |
26118 | { |
26119 | const int dwarf_tag = psymbol_tag (psym); | |
26120 | if (dwarf_tag == 0) | |
26121 | return; | |
26122 | const char *const name = SYMBOL_SEARCH_NAME (psym); | |
26123 | const auto insertpair | |
26124 | = m_name_to_value_set.emplace (c_str_view (name), | |
26125 | std::set<symbol_value> ()); | |
26126 | std::set<symbol_value> &value_set = insertpair.first->second; | |
8af5c486 | 26127 | value_set.emplace (symbol_value (dwarf_tag, cu_index, is_static, kind)); |
437afbb8 | 26128 | } |
9291a0cd | 26129 | |
437afbb8 JK |
26130 | /* Build all the tables. All symbols must be already inserted. |
26131 | This function does not call file_write, caller has to do it | |
26132 | afterwards. */ | |
26133 | void build () | |
26134 | { | |
26135 | /* Verify the build method has not be called twice. */ | |
26136 | gdb_assert (m_abbrev_table.empty ()); | |
26137 | const size_t name_count = m_name_to_value_set.size (); | |
26138 | m_bucket_table.resize | |
26139 | (std::pow (2, std::ceil (std::log2 (name_count * 4 / 3)))); | |
26140 | m_hash_table.reserve (name_count); | |
26141 | m_name_table_string_offs.reserve (name_count); | |
26142 | m_name_table_entry_offs.reserve (name_count); | |
26143 | ||
26144 | /* Map each hash of symbol to its name and value. */ | |
26145 | struct hash_it_pair | |
26146 | { | |
26147 | uint32_t hash; | |
26148 | decltype (m_name_to_value_set)::const_iterator it; | |
26149 | }; | |
26150 | std::vector<std::forward_list<hash_it_pair>> bucket_hash; | |
26151 | bucket_hash.resize (m_bucket_table.size ()); | |
26152 | for (decltype (m_name_to_value_set)::const_iterator it | |
26153 | = m_name_to_value_set.cbegin (); | |
26154 | it != m_name_to_value_set.cend (); | |
26155 | ++it) | |
26156 | { | |
26157 | const char *const name = it->first.c_str (); | |
26158 | const uint32_t hash = dwarf5_djb_hash (name); | |
26159 | hash_it_pair hashitpair; | |
26160 | hashitpair.hash = hash; | |
26161 | hashitpair.it = it; | |
26162 | auto &slot = bucket_hash[hash % bucket_hash.size()]; | |
26163 | slot.push_front (std::move (hashitpair)); | |
26164 | } | |
26165 | for (size_t bucket_ix = 0; bucket_ix < bucket_hash.size (); ++bucket_ix) | |
26166 | { | |
26167 | const std::forward_list<hash_it_pair> &hashitlist | |
26168 | = bucket_hash[bucket_ix]; | |
26169 | if (hashitlist.empty ()) | |
26170 | continue; | |
26171 | uint32_t &bucket_slot = m_bucket_table[bucket_ix]; | |
26172 | /* The hashes array is indexed starting at 1. */ | |
26173 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&bucket_slot), | |
26174 | sizeof (bucket_slot), m_dwarf5_byte_order, | |
26175 | m_hash_table.size () + 1); | |
26176 | for (const hash_it_pair &hashitpair : hashitlist) | |
26177 | { | |
26178 | m_hash_table.push_back (0); | |
26179 | store_unsigned_integer (reinterpret_cast<gdb_byte *> | |
26180 | (&m_hash_table.back ()), | |
26181 | sizeof (m_hash_table.back ()), | |
26182 | m_dwarf5_byte_order, hashitpair.hash); | |
26183 | const c_str_view &name = hashitpair.it->first; | |
26184 | const std::set<symbol_value> &value_set = hashitpair.it->second; | |
26185 | m_name_table_string_offs.push_back_reorder | |
26186 | (m_debugstrlookup.lookup (name.c_str ())); | |
26187 | m_name_table_entry_offs.push_back_reorder (m_entry_pool.size ()); | |
26188 | gdb_assert (!value_set.empty ()); | |
26189 | for (const symbol_value &value : value_set) | |
26190 | { | |
26191 | int &idx = m_indexkey_to_idx[index_key (value.dwarf_tag, | |
8af5c486 JK |
26192 | value.is_static, |
26193 | value.kind)]; | |
437afbb8 JK |
26194 | if (idx == 0) |
26195 | { | |
26196 | idx = m_idx_next++; | |
26197 | m_abbrev_table.append_unsigned_leb128 (idx); | |
26198 | m_abbrev_table.append_unsigned_leb128 (value.dwarf_tag); | |
8af5c486 JK |
26199 | m_abbrev_table.append_unsigned_leb128 |
26200 | (value.kind == unit_kind::cu ? DW_IDX_compile_unit | |
26201 | : DW_IDX_type_unit); | |
437afbb8 JK |
26202 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_udata); |
26203 | m_abbrev_table.append_unsigned_leb128 (value.is_static | |
26204 | ? DW_IDX_GNU_internal | |
26205 | : DW_IDX_GNU_external); | |
26206 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_flag_present); | |
26207 | ||
26208 | /* Terminate attributes list. */ | |
26209 | m_abbrev_table.append_unsigned_leb128 (0); | |
26210 | m_abbrev_table.append_unsigned_leb128 (0); | |
26211 | } | |
9291a0cd | 26212 | |
437afbb8 JK |
26213 | m_entry_pool.append_unsigned_leb128 (idx); |
26214 | m_entry_pool.append_unsigned_leb128 (value.cu_index); | |
26215 | } | |
9291a0cd | 26216 | |
437afbb8 JK |
26217 | /* Terminate the list of CUs. */ |
26218 | m_entry_pool.append_unsigned_leb128 (0); | |
26219 | } | |
26220 | } | |
26221 | gdb_assert (m_hash_table.size () == name_count); | |
987d643c | 26222 | |
437afbb8 JK |
26223 | /* Terminate tags list. */ |
26224 | m_abbrev_table.append_unsigned_leb128 (0); | |
26225 | } | |
0a5429f6 | 26226 | |
437afbb8 JK |
26227 | /* Return .debug_names bucket count. This must be called only after |
26228 | calling the build method. */ | |
26229 | uint32_t bucket_count () const | |
26230 | { | |
26231 | /* Verify the build method has been already called. */ | |
26232 | gdb_assert (!m_abbrev_table.empty ()); | |
26233 | const uint32_t retval = m_bucket_table.size (); | |
26234 | ||
26235 | /* Check for overflow. */ | |
26236 | gdb_assert (retval == m_bucket_table.size ()); | |
26237 | return retval; | |
26238 | } | |
26239 | ||
26240 | /* Return .debug_names names count. This must be called only after | |
26241 | calling the build method. */ | |
26242 | uint32_t name_count () const | |
26243 | { | |
26244 | /* Verify the build method has been already called. */ | |
26245 | gdb_assert (!m_abbrev_table.empty ()); | |
26246 | const uint32_t retval = m_hash_table.size (); | |
26247 | ||
26248 | /* Check for overflow. */ | |
26249 | gdb_assert (retval == m_hash_table.size ()); | |
26250 | return retval; | |
26251 | } | |
26252 | ||
26253 | /* Return number of bytes of .debug_names abbreviation table. This | |
26254 | must be called only after calling the build method. */ | |
26255 | uint32_t abbrev_table_bytes () const | |
26256 | { | |
26257 | gdb_assert (!m_abbrev_table.empty ()); | |
26258 | return m_abbrev_table.size (); | |
26259 | } | |
26260 | ||
26261 | /* Recurse into all "included" dependencies and store their symbols | |
26262 | as if they appeared in this psymtab. */ | |
26263 | void recursively_write_psymbols | |
26264 | (struct objfile *objfile, | |
26265 | struct partial_symtab *psymtab, | |
26266 | std::unordered_set<partial_symbol *> &psyms_seen, | |
26267 | int cu_index) | |
26268 | { | |
26269 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26270 | if (psymtab->dependencies[i]->user != NULL) | |
26271 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26272 | psyms_seen, cu_index); | |
26273 | ||
26274 | write_psymbols (psyms_seen, | |
26275 | &objfile->global_psymbols[psymtab->globals_offset], | |
8af5c486 | 26276 | psymtab->n_global_syms, cu_index, false, unit_kind::cu); |
437afbb8 JK |
26277 | write_psymbols (psyms_seen, |
26278 | &objfile->static_psymbols[psymtab->statics_offset], | |
8af5c486 | 26279 | psymtab->n_static_syms, cu_index, true, unit_kind::cu); |
437afbb8 JK |
26280 | } |
26281 | ||
26282 | /* Return number of bytes the .debug_names section will have. This | |
26283 | must be called only after calling the build method. */ | |
26284 | size_t bytes () const | |
26285 | { | |
26286 | /* Verify the build method has been already called. */ | |
26287 | gdb_assert (!m_abbrev_table.empty ()); | |
26288 | size_t expected_bytes = 0; | |
26289 | expected_bytes += m_bucket_table.size () * sizeof (m_bucket_table[0]); | |
26290 | expected_bytes += m_hash_table.size () * sizeof (m_hash_table[0]); | |
26291 | expected_bytes += m_name_table_string_offs.bytes (); | |
26292 | expected_bytes += m_name_table_entry_offs.bytes (); | |
26293 | expected_bytes += m_abbrev_table.size (); | |
26294 | expected_bytes += m_entry_pool.size (); | |
26295 | return expected_bytes; | |
26296 | } | |
26297 | ||
26298 | /* Write .debug_names to FILE_NAMES and .debug_str addition to | |
26299 | FILE_STR. This must be called only after calling the build | |
26300 | method. */ | |
26301 | void file_write (FILE *file_names, FILE *file_str) const | |
26302 | { | |
26303 | /* Verify the build method has been already called. */ | |
26304 | gdb_assert (!m_abbrev_table.empty ()); | |
26305 | ::file_write (file_names, m_bucket_table); | |
26306 | ::file_write (file_names, m_hash_table); | |
26307 | m_name_table_string_offs.file_write (file_names); | |
26308 | m_name_table_entry_offs.file_write (file_names); | |
26309 | m_abbrev_table.file_write (file_names); | |
26310 | m_entry_pool.file_write (file_names); | |
26311 | m_debugstrlookup.file_write (file_str); | |
26312 | } | |
26313 | ||
8af5c486 JK |
26314 | /* A helper user data for write_one_signatured_type. */ |
26315 | class write_one_signatured_type_data | |
26316 | { | |
26317 | public: | |
26318 | write_one_signatured_type_data (debug_names &nametable_, | |
26319 | signatured_type_index_data &&info_) | |
26320 | : nametable (nametable_), info (std::move (info_)) | |
26321 | {} | |
26322 | debug_names &nametable; | |
26323 | struct signatured_type_index_data info; | |
26324 | }; | |
26325 | ||
26326 | /* A helper function to pass write_one_signatured_type to | |
26327 | htab_traverse_noresize. */ | |
26328 | static int | |
26329 | write_one_signatured_type (void **slot, void *d) | |
26330 | { | |
26331 | write_one_signatured_type_data *data = (write_one_signatured_type_data *) d; | |
26332 | struct signatured_type_index_data *info = &data->info; | |
26333 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
26334 | ||
26335 | data->nametable.write_one_signatured_type (entry, info); | |
26336 | ||
26337 | return 1; | |
26338 | } | |
26339 | ||
437afbb8 JK |
26340 | private: |
26341 | ||
26342 | /* Storage for symbol names mapping them to their .debug_str section | |
26343 | offsets. */ | |
26344 | class debug_str_lookup | |
26345 | { | |
26346 | public: | |
26347 | ||
26348 | /* Object costructor to be called for current DWARF2_PER_OBJFILE. | |
26349 | All .debug_str section strings are automatically stored. */ | |
ed2dc618 SM |
26350 | debug_str_lookup (struct dwarf2_per_objfile *dwarf2_per_objfile) |
26351 | : m_abfd (dwarf2_per_objfile->objfile->obfd), | |
26352 | m_dwarf2_per_objfile (dwarf2_per_objfile) | |
437afbb8 JK |
26353 | { |
26354 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
26355 | &dwarf2_per_objfile->str); | |
26356 | if (dwarf2_per_objfile->str.buffer == NULL) | |
26357 | return; | |
26358 | for (const gdb_byte *data = dwarf2_per_objfile->str.buffer; | |
26359 | data < (dwarf2_per_objfile->str.buffer | |
26360 | + dwarf2_per_objfile->str.size);) | |
26361 | { | |
26362 | const char *const s = reinterpret_cast<const char *> (data); | |
26363 | const auto insertpair | |
26364 | = m_str_table.emplace (c_str_view (s), | |
26365 | data - dwarf2_per_objfile->str.buffer); | |
26366 | if (!insertpair.second) | |
26367 | complaint (&symfile_complaints, | |
26368 | _("Duplicate string \"%s\" in " | |
26369 | ".debug_str section [in module %s]"), | |
26370 | s, bfd_get_filename (m_abfd)); | |
26371 | data += strlen (s) + 1; | |
26372 | } | |
26373 | } | |
26374 | ||
26375 | /* Return offset of symbol name S in the .debug_str section. Add | |
26376 | such symbol to the section's end if it does not exist there | |
26377 | yet. */ | |
26378 | size_t lookup (const char *s) | |
26379 | { | |
26380 | const auto it = m_str_table.find (c_str_view (s)); | |
26381 | if (it != m_str_table.end ()) | |
26382 | return it->second; | |
ed2dc618 | 26383 | const size_t offset = (m_dwarf2_per_objfile->str.size |
437afbb8 JK |
26384 | + m_str_add_buf.size ()); |
26385 | m_str_table.emplace (c_str_view (s), offset); | |
26386 | m_str_add_buf.append_cstr0 (s); | |
26387 | return offset; | |
26388 | } | |
26389 | ||
26390 | /* Append the end of the .debug_str section to FILE. */ | |
26391 | void file_write (FILE *file) const | |
26392 | { | |
26393 | m_str_add_buf.file_write (file); | |
26394 | } | |
26395 | ||
26396 | private: | |
26397 | std::unordered_map<c_str_view, size_t, c_str_view_hasher> m_str_table; | |
26398 | bfd *const m_abfd; | |
ed2dc618 | 26399 | struct dwarf2_per_objfile *m_dwarf2_per_objfile; |
437afbb8 JK |
26400 | |
26401 | /* Data to add at the end of .debug_str for new needed symbol names. */ | |
26402 | data_buf m_str_add_buf; | |
26403 | }; | |
26404 | ||
26405 | /* Container to map used DWARF tags to their .debug_names abbreviation | |
26406 | tags. */ | |
26407 | class index_key | |
26408 | { | |
26409 | public: | |
8af5c486 JK |
26410 | index_key (int dwarf_tag_, bool is_static_, unit_kind kind_) |
26411 | : dwarf_tag (dwarf_tag_), is_static (is_static_), kind (kind_) | |
437afbb8 JK |
26412 | { |
26413 | } | |
26414 | ||
26415 | bool | |
26416 | operator== (const index_key &other) const | |
26417 | { | |
8af5c486 JK |
26418 | return (dwarf_tag == other.dwarf_tag && is_static == other.is_static |
26419 | && kind == other.kind); | |
437afbb8 JK |
26420 | } |
26421 | ||
26422 | const int dwarf_tag; | |
26423 | const bool is_static; | |
8af5c486 | 26424 | const unit_kind kind; |
437afbb8 JK |
26425 | }; |
26426 | ||
26427 | /* Provide std::unordered_map::hasher for index_key. */ | |
26428 | class index_key_hasher | |
26429 | { | |
26430 | public: | |
26431 | size_t | |
26432 | operator () (const index_key &key) const | |
26433 | { | |
26434 | return (std::hash<int>() (key.dwarf_tag) << 1) | key.is_static; | |
26435 | } | |
26436 | }; | |
26437 | ||
26438 | /* Parameters of one symbol entry. */ | |
26439 | class symbol_value | |
26440 | { | |
26441 | public: | |
26442 | const int dwarf_tag, cu_index; | |
26443 | const bool is_static; | |
8af5c486 | 26444 | const unit_kind kind; |
437afbb8 | 26445 | |
8af5c486 JK |
26446 | symbol_value (int dwarf_tag_, int cu_index_, bool is_static_, |
26447 | unit_kind kind_) | |
26448 | : dwarf_tag (dwarf_tag_), cu_index (cu_index_), is_static (is_static_), | |
26449 | kind (kind_) | |
437afbb8 JK |
26450 | {} |
26451 | ||
26452 | bool | |
26453 | operator< (const symbol_value &other) const | |
26454 | { | |
26455 | #define X(n) \ | |
26456 | do \ | |
26457 | { \ | |
26458 | if (n < other.n) \ | |
26459 | return true; \ | |
26460 | if (n > other.n) \ | |
26461 | return false; \ | |
26462 | } \ | |
26463 | while (0) | |
26464 | X (dwarf_tag); | |
26465 | X (is_static); | |
8af5c486 | 26466 | X (kind); |
437afbb8 JK |
26467 | X (cu_index); |
26468 | #undef X | |
26469 | return false; | |
26470 | } | |
26471 | }; | |
26472 | ||
26473 | /* Abstract base class to unify DWARF-32 and DWARF-64 name table | |
26474 | output. */ | |
26475 | class offset_vec | |
26476 | { | |
26477 | protected: | |
26478 | const bfd_endian dwarf5_byte_order; | |
26479 | public: | |
26480 | explicit offset_vec (bfd_endian dwarf5_byte_order_) | |
26481 | : dwarf5_byte_order (dwarf5_byte_order_) | |
26482 | {} | |
26483 | ||
26484 | /* Call std::vector::reserve for NELEM elements. */ | |
26485 | virtual void reserve (size_t nelem) = 0; | |
26486 | ||
26487 | /* Call std::vector::push_back with store_unsigned_integer byte | |
26488 | reordering for ELEM. */ | |
26489 | virtual void push_back_reorder (size_t elem) = 0; | |
26490 | ||
26491 | /* Return expected output size in bytes. */ | |
26492 | virtual size_t bytes () const = 0; | |
26493 | ||
26494 | /* Write name table to FILE. */ | |
26495 | virtual void file_write (FILE *file) const = 0; | |
26496 | }; | |
26497 | ||
26498 | /* Template to unify DWARF-32 and DWARF-64 output. */ | |
26499 | template<typename OffsetSize> | |
26500 | class offset_vec_tmpl : public offset_vec | |
26501 | { | |
26502 | public: | |
26503 | explicit offset_vec_tmpl (bfd_endian dwarf5_byte_order_) | |
26504 | : offset_vec (dwarf5_byte_order_) | |
26505 | {} | |
26506 | ||
26507 | /* Implement offset_vec::reserve. */ | |
26508 | void reserve (size_t nelem) override | |
26509 | { | |
26510 | m_vec.reserve (nelem); | |
26511 | } | |
26512 | ||
26513 | /* Implement offset_vec::push_back_reorder. */ | |
26514 | void push_back_reorder (size_t elem) override | |
26515 | { | |
26516 | m_vec.push_back (elem); | |
26517 | /* Check for overflow. */ | |
26518 | gdb_assert (m_vec.back () == elem); | |
26519 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&m_vec.back ()), | |
26520 | sizeof (m_vec.back ()), dwarf5_byte_order, elem); | |
26521 | } | |
26522 | ||
26523 | /* Implement offset_vec::bytes. */ | |
26524 | size_t bytes () const override | |
26525 | { | |
26526 | return m_vec.size () * sizeof (m_vec[0]); | |
26527 | } | |
26528 | ||
26529 | /* Implement offset_vec::file_write. */ | |
26530 | void file_write (FILE *file) const override | |
26531 | { | |
26532 | ::file_write (file, m_vec); | |
26533 | } | |
26534 | ||
26535 | private: | |
26536 | std::vector<OffsetSize> m_vec; | |
26537 | }; | |
26538 | ||
26539 | /* Base class to unify DWARF-32 and DWARF-64 .debug_names output | |
26540 | respecting name table width. */ | |
26541 | class dwarf | |
26542 | { | |
26543 | public: | |
26544 | offset_vec &name_table_string_offs, &name_table_entry_offs; | |
26545 | ||
26546 | dwarf (offset_vec &name_table_string_offs_, | |
26547 | offset_vec &name_table_entry_offs_) | |
26548 | : name_table_string_offs (name_table_string_offs_), | |
26549 | name_table_entry_offs (name_table_entry_offs_) | |
26550 | { | |
26551 | } | |
26552 | }; | |
e8f8bcb3 | 26553 | |
437afbb8 JK |
26554 | /* Template to unify DWARF-32 and DWARF-64 .debug_names output |
26555 | respecting name table width. */ | |
26556 | template<typename OffsetSize> | |
26557 | class dwarf_tmpl : public dwarf | |
26558 | { | |
26559 | public: | |
26560 | explicit dwarf_tmpl (bfd_endian dwarf5_byte_order_) | |
26561 | : dwarf (m_name_table_string_offs, m_name_table_entry_offs), | |
26562 | m_name_table_string_offs (dwarf5_byte_order_), | |
26563 | m_name_table_entry_offs (dwarf5_byte_order_) | |
26564 | {} | |
26565 | ||
26566 | private: | |
26567 | offset_vec_tmpl<OffsetSize> m_name_table_string_offs; | |
26568 | offset_vec_tmpl<OffsetSize> m_name_table_entry_offs; | |
26569 | }; | |
26570 | ||
26571 | /* Try to reconstruct original DWARF tag for given partial_symbol. | |
26572 | This function is not DWARF-5 compliant but it is sufficient for | |
26573 | GDB as a DWARF-5 index consumer. */ | |
26574 | static int psymbol_tag (const struct partial_symbol *psym) | |
26575 | { | |
26576 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
26577 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
26578 | ||
26579 | switch (domain) | |
26580 | { | |
26581 | case VAR_DOMAIN: | |
26582 | switch (aclass) | |
26583 | { | |
26584 | case LOC_BLOCK: | |
26585 | return DW_TAG_subprogram; | |
26586 | case LOC_TYPEDEF: | |
26587 | return DW_TAG_typedef; | |
26588 | case LOC_COMPUTED: | |
26589 | case LOC_CONST_BYTES: | |
26590 | case LOC_OPTIMIZED_OUT: | |
26591 | case LOC_STATIC: | |
26592 | return DW_TAG_variable; | |
26593 | case LOC_CONST: | |
26594 | /* Note: It's currently impossible to recognize psyms as enum values | |
26595 | short of reading the type info. For now punt. */ | |
26596 | return DW_TAG_variable; | |
26597 | default: | |
26598 | /* There are other LOC_FOO values that one might want to classify | |
26599 | as variables, but dwarf2read.c doesn't currently use them. */ | |
26600 | return DW_TAG_variable; | |
26601 | } | |
26602 | case STRUCT_DOMAIN: | |
26603 | return DW_TAG_structure_type; | |
26604 | default: | |
26605 | return 0; | |
26606 | } | |
26607 | } | |
26608 | ||
26609 | /* Call insert for all partial symbols and mark them in PSYMS_SEEN. */ | |
26610 | void write_psymbols (std::unordered_set<partial_symbol *> &psyms_seen, | |
26611 | struct partial_symbol **psymp, int count, int cu_index, | |
8af5c486 | 26612 | bool is_static, unit_kind kind) |
437afbb8 JK |
26613 | { |
26614 | for (; count-- > 0; ++psymp) | |
26615 | { | |
26616 | struct partial_symbol *psym = *psymp; | |
26617 | ||
26618 | if (SYMBOL_LANGUAGE (psym) == language_ada) | |
26619 | error (_("Ada is not currently supported by the index")); | |
26620 | ||
26621 | /* Only add a given psymbol once. */ | |
26622 | if (psyms_seen.insert (psym).second) | |
8af5c486 | 26623 | insert (psym, cu_index, is_static, kind); |
437afbb8 JK |
26624 | } |
26625 | } | |
26626 | ||
8af5c486 JK |
26627 | /* A helper function that writes a single signatured_type |
26628 | to a debug_names. */ | |
26629 | void | |
26630 | write_one_signatured_type (struct signatured_type *entry, | |
26631 | struct signatured_type_index_data *info) | |
26632 | { | |
26633 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; | |
26634 | ||
26635 | write_psymbols (info->psyms_seen, | |
26636 | &info->objfile->global_psymbols[psymtab->globals_offset], | |
26637 | psymtab->n_global_syms, info->cu_index, false, | |
26638 | unit_kind::tu); | |
26639 | write_psymbols (info->psyms_seen, | |
26640 | &info->objfile->static_psymbols[psymtab->statics_offset], | |
26641 | psymtab->n_static_syms, info->cu_index, true, | |
26642 | unit_kind::tu); | |
26643 | ||
26644 | info->types_list.append_uint (dwarf5_offset_size (), m_dwarf5_byte_order, | |
26645 | to_underlying (entry->per_cu.sect_off)); | |
26646 | ||
26647 | ++info->cu_index; | |
26648 | } | |
26649 | ||
437afbb8 JK |
26650 | /* Store value of each symbol. */ |
26651 | std::unordered_map<c_str_view, std::set<symbol_value>, c_str_view_hasher> | |
26652 | m_name_to_value_set; | |
26653 | ||
26654 | /* Tables of DWARF-5 .debug_names. They are in object file byte | |
26655 | order. */ | |
26656 | std::vector<uint32_t> m_bucket_table; | |
26657 | std::vector<uint32_t> m_hash_table; | |
26658 | ||
26659 | const bfd_endian m_dwarf5_byte_order; | |
26660 | dwarf_tmpl<uint32_t> m_dwarf32; | |
26661 | dwarf_tmpl<uint64_t> m_dwarf64; | |
26662 | dwarf &m_dwarf; | |
26663 | offset_vec &m_name_table_string_offs, &m_name_table_entry_offs; | |
26664 | debug_str_lookup m_debugstrlookup; | |
26665 | ||
26666 | /* Map each used .debug_names abbreviation tag parameter to its | |
26667 | index value. */ | |
26668 | std::unordered_map<index_key, int, index_key_hasher> m_indexkey_to_idx; | |
26669 | ||
26670 | /* Next unused .debug_names abbreviation tag for | |
26671 | m_indexkey_to_idx. */ | |
26672 | int m_idx_next = 1; | |
26673 | ||
26674 | /* .debug_names abbreviation table. */ | |
26675 | data_buf m_abbrev_table; | |
26676 | ||
26677 | /* .debug_names entry pool. */ | |
26678 | data_buf m_entry_pool; | |
26679 | }; | |
26680 | ||
26681 | /* Return iff any of the needed offsets does not fit into 32-bit | |
26682 | .debug_names section. */ | |
26683 | ||
26684 | static bool | |
ed2dc618 | 26685 | check_dwarf64_offsets (struct dwarf2_per_objfile *dwarf2_per_objfile) |
437afbb8 JK |
26686 | { |
26687 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
26688 | { | |
26689 | const dwarf2_per_cu_data &per_cu = *dwarf2_per_objfile->all_comp_units[i]; | |
26690 | ||
26691 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
26692 | return true; | |
26693 | } | |
26694 | for (int i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
26695 | { | |
26696 | const signatured_type &sigtype = *dwarf2_per_objfile->all_type_units[i]; | |
26697 | const dwarf2_per_cu_data &per_cu = sigtype.per_cu; | |
26698 | ||
26699 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
26700 | return true; | |
26701 | } | |
26702 | return false; | |
26703 | } | |
26704 | ||
26705 | /* The psyms_seen set is potentially going to be largish (~40k | |
26706 | elements when indexing a -g3 build of GDB itself). Estimate the | |
26707 | number of elements in order to avoid too many rehashes, which | |
26708 | require rebuilding buckets and thus many trips to | |
26709 | malloc/free. */ | |
26710 | ||
26711 | static size_t | |
ed2dc618 | 26712 | psyms_seen_size (struct dwarf2_per_objfile *dwarf2_per_objfile) |
437afbb8 | 26713 | { |
e8f8bcb3 PA |
26714 | size_t psyms_count = 0; |
26715 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
26716 | { | |
26717 | struct dwarf2_per_cu_data *per_cu | |
26718 | = dwarf2_per_objfile->all_comp_units[i]; | |
26719 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
26720 | ||
26721 | if (psymtab != NULL && psymtab->user == NULL) | |
26722 | recursively_count_psymbols (psymtab, psyms_count); | |
26723 | } | |
26724 | /* Generating an index for gdb itself shows a ratio of | |
26725 | TOTAL_SEEN_SYMS/UNIQUE_SYMS or ~5. 4 seems like a good bet. */ | |
437afbb8 JK |
26726 | return psyms_count / 4; |
26727 | } | |
26728 | ||
26729 | /* Write new .gdb_index section for OBJFILE into OUT_FILE. | |
26730 | Return how many bytes were expected to be written into OUT_FILE. */ | |
26731 | ||
26732 | static size_t | |
ed2dc618 | 26733 | write_gdbindex (struct dwarf2_per_objfile *dwarf2_per_objfile, FILE *out_file) |
437afbb8 | 26734 | { |
ed2dc618 | 26735 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
437afbb8 JK |
26736 | mapped_symtab symtab; |
26737 | data_buf cu_list; | |
26738 | ||
26739 | /* While we're scanning CU's create a table that maps a psymtab pointer | |
26740 | (which is what addrmap records) to its index (which is what is recorded | |
26741 | in the index file). This will later be needed to write the address | |
26742 | table. */ | |
26743 | psym_index_map cu_index_htab; | |
26744 | cu_index_htab.reserve (dwarf2_per_objfile->n_comp_units); | |
26745 | ||
26746 | /* The CU list is already sorted, so we don't need to do additional | |
26747 | work here. Also, the debug_types entries do not appear in | |
26748 | all_comp_units, but only in their own hash table. */ | |
26749 | ||
ed2dc618 SM |
26750 | std::unordered_set<partial_symbol *> psyms_seen |
26751 | (psyms_seen_size (dwarf2_per_objfile)); | |
bc8f2430 | 26752 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd | 26753 | { |
3e43a32a MS |
26754 | struct dwarf2_per_cu_data *per_cu |
26755 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 26756 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 26757 | |
92fac807 JK |
26758 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
26759 | It may be referenced from a local scope but in such case it does not | |
26760 | need to be present in .gdb_index. */ | |
26761 | if (psymtab == NULL) | |
26762 | continue; | |
26763 | ||
95554aad | 26764 | if (psymtab->user == NULL) |
bc8f2430 JK |
26765 | recursively_write_psymbols (objfile, psymtab, &symtab, |
26766 | psyms_seen, i); | |
9291a0cd | 26767 | |
bc8f2430 JK |
26768 | const auto insertpair = cu_index_htab.emplace (psymtab, i); |
26769 | gdb_assert (insertpair.second); | |
9291a0cd | 26770 | |
c2f134ac PA |
26771 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, |
26772 | to_underlying (per_cu->sect_off)); | |
26773 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, per_cu->length); | |
9291a0cd TT |
26774 | } |
26775 | ||
0a5429f6 | 26776 | /* Dump the address map. */ |
bc8f2430 JK |
26777 | data_buf addr_vec; |
26778 | write_address_map (objfile, addr_vec, cu_index_htab); | |
0a5429f6 | 26779 | |
1fd400ff | 26780 | /* Write out the .debug_type entries, if any. */ |
bc8f2430 | 26781 | data_buf types_cu_list; |
1fd400ff TT |
26782 | if (dwarf2_per_objfile->signatured_types) |
26783 | { | |
bc8f2430 JK |
26784 | signatured_type_index_data sig_data (types_cu_list, |
26785 | psyms_seen); | |
1fd400ff TT |
26786 | |
26787 | sig_data.objfile = objfile; | |
bc8f2430 | 26788 | sig_data.symtab = &symtab; |
1fd400ff TT |
26789 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
26790 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
26791 | write_one_signatured_type, &sig_data); | |
26792 | } | |
26793 | ||
156942c7 DE |
26794 | /* Now that we've processed all symbols we can shrink their cu_indices |
26795 | lists. */ | |
bc8f2430 | 26796 | uniquify_cu_indices (&symtab); |
156942c7 | 26797 | |
bc8f2430 JK |
26798 | data_buf symtab_vec, constant_pool; |
26799 | write_hash_table (&symtab, symtab_vec, constant_pool); | |
9291a0cd | 26800 | |
bc8f2430 JK |
26801 | data_buf contents; |
26802 | const offset_type size_of_contents = 6 * sizeof (offset_type); | |
26803 | offset_type total_len = size_of_contents; | |
9291a0cd TT |
26804 | |
26805 | /* The version number. */ | |
bc8f2430 | 26806 | contents.append_data (MAYBE_SWAP (8)); |
9291a0cd TT |
26807 | |
26808 | /* The offset of the CU list from the start of the file. */ | |
bc8f2430 JK |
26809 | contents.append_data (MAYBE_SWAP (total_len)); |
26810 | total_len += cu_list.size (); | |
9291a0cd | 26811 | |
1fd400ff | 26812 | /* The offset of the types CU list from the start of the file. */ |
bc8f2430 JK |
26813 | contents.append_data (MAYBE_SWAP (total_len)); |
26814 | total_len += types_cu_list.size (); | |
1fd400ff | 26815 | |
9291a0cd | 26816 | /* The offset of the address table from the start of the file. */ |
bc8f2430 JK |
26817 | contents.append_data (MAYBE_SWAP (total_len)); |
26818 | total_len += addr_vec.size (); | |
9291a0cd TT |
26819 | |
26820 | /* The offset of the symbol table from the start of the file. */ | |
bc8f2430 JK |
26821 | contents.append_data (MAYBE_SWAP (total_len)); |
26822 | total_len += symtab_vec.size (); | |
9291a0cd TT |
26823 | |
26824 | /* The offset of the constant pool from the start of the file. */ | |
bc8f2430 JK |
26825 | contents.append_data (MAYBE_SWAP (total_len)); |
26826 | total_len += constant_pool.size (); | |
9291a0cd | 26827 | |
bc8f2430 | 26828 | gdb_assert (contents.size () == size_of_contents); |
9291a0cd | 26829 | |
bc8f2430 JK |
26830 | contents.file_write (out_file); |
26831 | cu_list.file_write (out_file); | |
26832 | types_cu_list.file_write (out_file); | |
26833 | addr_vec.file_write (out_file); | |
26834 | symtab_vec.file_write (out_file); | |
26835 | constant_pool.file_write (out_file); | |
9291a0cd | 26836 | |
437afbb8 JK |
26837 | return total_len; |
26838 | } | |
26839 | ||
26840 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
26841 | static const gdb_byte dwarf5_gdb_augmentation[] = { 'G', 'D', 'B', 0 }; | |
26842 | ||
26843 | /* Write a new .debug_names section for OBJFILE into OUT_FILE, write | |
26844 | needed addition to .debug_str section to OUT_FILE_STR. Return how | |
26845 | many bytes were expected to be written into OUT_FILE. */ | |
26846 | ||
26847 | static size_t | |
ed2dc618 SM |
26848 | write_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
26849 | FILE *out_file, FILE *out_file_str) | |
437afbb8 | 26850 | { |
ed2dc618 SM |
26851 | const bool dwarf5_is_dwarf64 = check_dwarf64_offsets (dwarf2_per_objfile); |
26852 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
437afbb8 JK |
26853 | const enum bfd_endian dwarf5_byte_order |
26854 | = gdbarch_byte_order (get_objfile_arch (objfile)); | |
26855 | ||
26856 | /* The CU list is already sorted, so we don't need to do additional | |
26857 | work here. Also, the debug_types entries do not appear in | |
26858 | all_comp_units, but only in their own hash table. */ | |
26859 | data_buf cu_list; | |
ed2dc618 SM |
26860 | debug_names nametable (dwarf2_per_objfile, dwarf5_is_dwarf64, |
26861 | dwarf5_byte_order); | |
26862 | std::unordered_set<partial_symbol *> | |
26863 | psyms_seen (psyms_seen_size (dwarf2_per_objfile)); | |
437afbb8 JK |
26864 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
26865 | { | |
26866 | const dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->all_comp_units[i]; | |
26867 | partial_symtab *psymtab = per_cu->v.psymtab; | |
26868 | ||
26869 | /* CU of a shared file from 'dwz -m' may be unused by this main | |
26870 | file. It may be referenced from a local scope but in such | |
26871 | case it does not need to be present in .debug_names. */ | |
26872 | if (psymtab == NULL) | |
26873 | continue; | |
26874 | ||
26875 | if (psymtab->user == NULL) | |
26876 | nametable.recursively_write_psymbols (objfile, psymtab, psyms_seen, i); | |
26877 | ||
8af5c486 | 26878 | cu_list.append_uint (nametable.dwarf5_offset_size (), dwarf5_byte_order, |
437afbb8 JK |
26879 | to_underlying (per_cu->sect_off)); |
26880 | } | |
437afbb8 | 26881 | |
8af5c486 | 26882 | /* Write out the .debug_type entries, if any. */ |
437afbb8 | 26883 | data_buf types_cu_list; |
8af5c486 | 26884 | if (dwarf2_per_objfile->signatured_types) |
437afbb8 | 26885 | { |
8af5c486 JK |
26886 | debug_names::write_one_signatured_type_data sig_data (nametable, |
26887 | signatured_type_index_data (types_cu_list, psyms_seen)); | |
437afbb8 | 26888 | |
8af5c486 JK |
26889 | sig_data.info.objfile = objfile; |
26890 | /* It is used only for gdb_index. */ | |
26891 | sig_data.info.symtab = nullptr; | |
26892 | sig_data.info.cu_index = 0; | |
26893 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
26894 | debug_names::write_one_signatured_type, | |
26895 | &sig_data); | |
437afbb8 JK |
26896 | } |
26897 | ||
8af5c486 JK |
26898 | nametable.build (); |
26899 | ||
26900 | /* No addr_vec - DWARF-5 uses .debug_aranges generated by GCC. */ | |
26901 | ||
437afbb8 JK |
26902 | const offset_type bytes_of_header |
26903 | = ((dwarf5_is_dwarf64 ? 12 : 4) | |
26904 | + 2 + 2 + 7 * 4 | |
26905 | + sizeof (dwarf5_gdb_augmentation)); | |
26906 | size_t expected_bytes = 0; | |
26907 | expected_bytes += bytes_of_header; | |
26908 | expected_bytes += cu_list.size (); | |
26909 | expected_bytes += types_cu_list.size (); | |
26910 | expected_bytes += nametable.bytes (); | |
26911 | data_buf header; | |
26912 | ||
26913 | if (!dwarf5_is_dwarf64) | |
26914 | { | |
26915 | const uint64_t size64 = expected_bytes - 4; | |
26916 | gdb_assert (size64 < 0xfffffff0); | |
26917 | header.append_uint (4, dwarf5_byte_order, size64); | |
26918 | } | |
26919 | else | |
26920 | { | |
26921 | header.append_uint (4, dwarf5_byte_order, 0xffffffff); | |
26922 | header.append_uint (8, dwarf5_byte_order, expected_bytes - 12); | |
26923 | } | |
26924 | ||
26925 | /* The version number. */ | |
26926 | header.append_uint (2, dwarf5_byte_order, 5); | |
26927 | ||
26928 | /* Padding. */ | |
26929 | header.append_uint (2, dwarf5_byte_order, 0); | |
26930 | ||
26931 | /* comp_unit_count - The number of CUs in the CU list. */ | |
26932 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_comp_units); | |
26933 | ||
26934 | /* local_type_unit_count - The number of TUs in the local TU | |
26935 | list. */ | |
26936 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_type_units); | |
26937 | ||
26938 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
26939 | list. */ | |
26940 | header.append_uint (4, dwarf5_byte_order, 0); | |
26941 | ||
26942 | /* bucket_count - The number of hash buckets in the hash lookup | |
26943 | table. */ | |
26944 | header.append_uint (4, dwarf5_byte_order, nametable.bucket_count ()); | |
26945 | ||
26946 | /* name_count - The number of unique names in the index. */ | |
26947 | header.append_uint (4, dwarf5_byte_order, nametable.name_count ()); | |
26948 | ||
26949 | /* abbrev_table_size - The size in bytes of the abbreviations | |
26950 | table. */ | |
26951 | header.append_uint (4, dwarf5_byte_order, nametable.abbrev_table_bytes ()); | |
26952 | ||
26953 | /* augmentation_string_size - The size in bytes of the augmentation | |
26954 | string. This value is rounded up to a multiple of 4. */ | |
26955 | static_assert (sizeof (dwarf5_gdb_augmentation) % 4 == 0, ""); | |
26956 | header.append_uint (4, dwarf5_byte_order, sizeof (dwarf5_gdb_augmentation)); | |
26957 | header.append_data (dwarf5_gdb_augmentation); | |
26958 | ||
26959 | gdb_assert (header.size () == bytes_of_header); | |
26960 | ||
26961 | header.file_write (out_file); | |
26962 | cu_list.file_write (out_file); | |
26963 | types_cu_list.file_write (out_file); | |
26964 | nametable.file_write (out_file, out_file_str); | |
26965 | ||
26966 | return expected_bytes; | |
26967 | } | |
26968 | ||
26969 | /* Assert that FILE's size is EXPECTED_SIZE. Assumes file's seek | |
26970 | position is at the end of the file. */ | |
26971 | ||
26972 | static void | |
26973 | assert_file_size (FILE *file, const char *filename, size_t expected_size) | |
26974 | { | |
26975 | const auto file_size = ftell (file); | |
26976 | if (file_size == -1) | |
26977 | error (_("Can't get `%s' size"), filename); | |
26978 | gdb_assert (file_size == expected_size); | |
26979 | } | |
26980 | ||
437afbb8 JK |
26981 | /* Create an index file for OBJFILE in the directory DIR. */ |
26982 | ||
26983 | static void | |
ed2dc618 SM |
26984 | write_psymtabs_to_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
26985 | const char *dir, | |
437afbb8 JK |
26986 | dw_index_kind index_kind) |
26987 | { | |
ed2dc618 SM |
26988 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
26989 | ||
437afbb8 JK |
26990 | if (dwarf2_per_objfile->using_index) |
26991 | error (_("Cannot use an index to create the index")); | |
26992 | ||
26993 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) | |
26994 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
26995 | ||
26996 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) | |
26997 | return; | |
26998 | ||
26999 | struct stat st; | |
27000 | if (stat (objfile_name (objfile), &st) < 0) | |
27001 | perror_with_name (objfile_name (objfile)); | |
27002 | ||
27003 | std::string filename (std::string (dir) + SLASH_STRING | |
27004 | + lbasename (objfile_name (objfile)) | |
27005 | + (index_kind == dw_index_kind::DEBUG_NAMES | |
27006 | ? INDEX5_SUFFIX : INDEX4_SUFFIX)); | |
27007 | ||
27008 | FILE *out_file = gdb_fopen_cloexec (filename.c_str (), "wb").release (); | |
27009 | if (!out_file) | |
27010 | error (_("Can't open `%s' for writing"), filename.c_str ()); | |
27011 | ||
27012 | /* Order matters here; we want FILE to be closed before FILENAME is | |
27013 | unlinked, because on MS-Windows one cannot delete a file that is | |
27014 | still open. (Don't call anything here that might throw until | |
27015 | file_closer is created.) */ | |
27016 | gdb::unlinker unlink_file (filename.c_str ()); | |
27017 | gdb_file_up close_out_file (out_file); | |
27018 | ||
27019 | if (index_kind == dw_index_kind::DEBUG_NAMES) | |
27020 | { | |
27021 | std::string filename_str (std::string (dir) + SLASH_STRING | |
27022 | + lbasename (objfile_name (objfile)) | |
27023 | + DEBUG_STR_SUFFIX); | |
27024 | FILE *out_file_str | |
27025 | = gdb_fopen_cloexec (filename_str.c_str (), "wb").release (); | |
27026 | if (!out_file_str) | |
27027 | error (_("Can't open `%s' for writing"), filename_str.c_str ()); | |
27028 | gdb::unlinker unlink_file_str (filename_str.c_str ()); | |
27029 | gdb_file_up close_out_file_str (out_file_str); | |
27030 | ||
27031 | const size_t total_len | |
ed2dc618 | 27032 | = write_debug_names (dwarf2_per_objfile, out_file, out_file_str); |
437afbb8 JK |
27033 | assert_file_size (out_file, filename.c_str (), total_len); |
27034 | ||
27035 | /* We want to keep the file .debug_str file too. */ | |
27036 | unlink_file_str.keep (); | |
27037 | } | |
27038 | else | |
27039 | { | |
27040 | const size_t total_len | |
ed2dc618 | 27041 | = write_gdbindex (dwarf2_per_objfile, out_file); |
437afbb8 JK |
27042 | assert_file_size (out_file, filename.c_str (), total_len); |
27043 | } | |
27044 | ||
bef155c3 TT |
27045 | /* We want to keep the file. */ |
27046 | unlink_file.keep (); | |
9291a0cd TT |
27047 | } |
27048 | ||
90476074 TT |
27049 | /* Implementation of the `save gdb-index' command. |
27050 | ||
437afbb8 JK |
27051 | Note that the .gdb_index file format used by this command is |
27052 | documented in the GDB manual. Any changes here must be documented | |
27053 | there. */ | |
11570e71 | 27054 | |
9291a0cd | 27055 | static void |
8384c356 | 27056 | save_gdb_index_command (const char *arg, int from_tty) |
9291a0cd TT |
27057 | { |
27058 | struct objfile *objfile; | |
437afbb8 JK |
27059 | const char dwarf5space[] = "-dwarf-5 "; |
27060 | dw_index_kind index_kind = dw_index_kind::GDB_INDEX; | |
27061 | ||
27062 | if (!arg) | |
27063 | arg = ""; | |
27064 | ||
27065 | arg = skip_spaces (arg); | |
27066 | if (strncmp (arg, dwarf5space, strlen (dwarf5space)) == 0) | |
27067 | { | |
27068 | index_kind = dw_index_kind::DEBUG_NAMES; | |
27069 | arg += strlen (dwarf5space); | |
27070 | arg = skip_spaces (arg); | |
27071 | } | |
9291a0cd | 27072 | |
437afbb8 JK |
27073 | if (!*arg) |
27074 | error (_("usage: save gdb-index [-dwarf-5] DIRECTORY")); | |
9291a0cd TT |
27075 | |
27076 | ALL_OBJFILES (objfile) | |
27077 | { | |
27078 | struct stat st; | |
27079 | ||
27080 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 27081 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
27082 | continue; |
27083 | ||
ed2dc618 SM |
27084 | struct dwarf2_per_objfile *dwarf2_per_objfile |
27085 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 27086 | |
ed2dc618 SM |
27087 | if (dwarf2_per_objfile != NULL) |
27088 | { | |
492d29ea | 27089 | TRY |
9291a0cd | 27090 | { |
ed2dc618 | 27091 | write_psymtabs_to_index (dwarf2_per_objfile, arg, index_kind); |
9291a0cd | 27092 | } |
492d29ea PA |
27093 | CATCH (except, RETURN_MASK_ERROR) |
27094 | { | |
27095 | exception_fprintf (gdb_stderr, except, | |
27096 | _("Error while writing index for `%s': "), | |
27097 | objfile_name (objfile)); | |
27098 | } | |
27099 | END_CATCH | |
9291a0cd | 27100 | } |
ed2dc618 | 27101 | |
9291a0cd | 27102 | } |
dce234bc PP |
27103 | } |
27104 | ||
9291a0cd TT |
27105 | \f |
27106 | ||
b4f54984 | 27107 | int dwarf_always_disassemble; |
9eae7c52 TT |
27108 | |
27109 | static void | |
b4f54984 DE |
27110 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
27111 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 27112 | { |
3e43a32a MS |
27113 | fprintf_filtered (file, |
27114 | _("Whether to always disassemble " | |
27115 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
27116 | value); |
27117 | } | |
27118 | ||
900e11f9 JK |
27119 | static void |
27120 | show_check_physname (struct ui_file *file, int from_tty, | |
27121 | struct cmd_list_element *c, const char *value) | |
27122 | { | |
27123 | fprintf_filtered (file, | |
27124 | _("Whether to check \"physname\" is %s.\n"), | |
27125 | value); | |
27126 | } | |
27127 | ||
6502dd73 DJ |
27128 | void |
27129 | _initialize_dwarf2_read (void) | |
27130 | { | |
96d19272 JK |
27131 | struct cmd_list_element *c; |
27132 | ||
fc8e7e75 | 27133 | dwarf2_objfile_data_key = register_objfile_data (); |
ae038cb0 | 27134 | |
b4f54984 DE |
27135 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
27136 | Set DWARF specific variables.\n\ | |
27137 | Configure DWARF variables such as the cache size"), | |
27138 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
27139 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
27140 | ||
b4f54984 DE |
27141 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
27142 | Show DWARF specific variables\n\ | |
27143 | Show DWARF variables such as the cache size"), | |
27144 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
27145 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
27146 | ||
27147 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
27148 | &dwarf_max_cache_age, _("\ |
27149 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
27150 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
27151 | A higher limit means that cached compilation units will be stored\n\ |
27152 | in memory longer, and more total memory will be used. Zero disables\n\ | |
27153 | caching, which can slow down startup."), | |
2c5b56ce | 27154 | NULL, |
b4f54984 DE |
27155 | show_dwarf_max_cache_age, |
27156 | &set_dwarf_cmdlist, | |
27157 | &show_dwarf_cmdlist); | |
d97bc12b | 27158 | |
9eae7c52 | 27159 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 27160 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
27161 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
27162 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
27163 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
27164 | syntax. When disabled, expressions will be printed in a more\n\ | |
27165 | conversational style, when possible."), | |
27166 | NULL, | |
b4f54984 DE |
27167 | show_dwarf_always_disassemble, |
27168 | &set_dwarf_cmdlist, | |
27169 | &show_dwarf_cmdlist); | |
27170 | ||
27171 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
27172 | Set debugging of the DWARF reader."), _("\ | |
27173 | Show debugging of the DWARF reader."), _("\ | |
27174 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
27175 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
27176 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
27177 | NULL, |
27178 | NULL, | |
27179 | &setdebuglist, &showdebuglist); | |
27180 | ||
b4f54984 DE |
27181 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
27182 | Set debugging of the DWARF DIE reader."), _("\ | |
27183 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
27184 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
27185 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
27186 | NULL, |
27187 | NULL, | |
27188 | &setdebuglist, &showdebuglist); | |
9291a0cd | 27189 | |
27e0867f DE |
27190 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
27191 | Set debugging of the dwarf line reader."), _("\ | |
27192 | Show debugging of the dwarf line reader."), _("\ | |
27193 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
27194 | A value of 1 (one) provides basic information.\n\ | |
27195 | A value greater than 1 provides more verbose information."), | |
27196 | NULL, | |
27197 | NULL, | |
27198 | &setdebuglist, &showdebuglist); | |
27199 | ||
900e11f9 JK |
27200 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
27201 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
27202 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
27203 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
27204 | the demangler."), | |
27205 | NULL, show_check_physname, | |
27206 | &setdebuglist, &showdebuglist); | |
27207 | ||
e615022a DE |
27208 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
27209 | no_class, &use_deprecated_index_sections, _("\ | |
27210 | Set whether to use deprecated gdb_index sections."), _("\ | |
27211 | Show whether to use deprecated gdb_index sections."), _("\ | |
27212 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
27213 | Normally they are ignored either because of a missing feature or\n\ | |
27214 | performance issue.\n\ | |
27215 | Warning: This option must be enabled before gdb reads the file."), | |
27216 | NULL, | |
27217 | NULL, | |
27218 | &setlist, &showlist); | |
27219 | ||
96d19272 | 27220 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 27221 | _("\ |
fc1a9d6e | 27222 | Save a gdb-index file.\n\ |
437afbb8 JK |
27223 | Usage: save gdb-index [-dwarf-5] DIRECTORY\n\ |
27224 | \n\ | |
27225 | No options create one file with .gdb-index extension for pre-DWARF-5\n\ | |
27226 | compatible .gdb_index section. With -dwarf-5 creates two files with\n\ | |
27227 | extension .debug_names and .debug_str for DWARF-5 .debug_names section."), | |
96d19272 JK |
27228 | &save_cmdlist); |
27229 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
27230 | |
27231 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27232 | &dwarf2_locexpr_funcs); | |
27233 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27234 | &dwarf2_loclist_funcs); | |
27235 | ||
27236 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27237 | &dwarf2_block_frame_base_locexpr_funcs); | |
27238 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27239 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
27240 | |
27241 | #if GDB_SELF_TEST | |
27242 | selftests::register_test ("dw2_expand_symtabs_matching", | |
27243 | selftests::dw2_expand_symtabs_matching::run_test); | |
27244 | #endif | |
6502dd73 | 27245 | } |