Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
61baf725 | 3 | Copyright (C) 1994-2017 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 | ||
90 | typedef struct symbol *symbolp; | |
91 | DEF_VEC_P (symbolp); | |
d8151005 | 92 | |
73be47f5 DE |
93 | /* When == 1, print basic high level tracing messages. |
94 | When > 1, be more verbose. | |
b4f54984 DE |
95 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
96 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 97 | |
d97bc12b | 98 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 99 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 100 | |
27e0867f DE |
101 | /* When non-zero, dump line number entries as they are read in. */ |
102 | static unsigned int dwarf_line_debug = 0; | |
103 | ||
900e11f9 JK |
104 | /* When non-zero, cross-check physname against demangler. */ |
105 | static int check_physname = 0; | |
106 | ||
481860b3 | 107 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 108 | static int use_deprecated_index_sections = 0; |
481860b3 | 109 | |
6502dd73 DJ |
110 | static const struct objfile_data *dwarf2_objfile_data_key; |
111 | ||
f1e6e072 TT |
112 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
113 | ||
114 | static int dwarf2_locexpr_index; | |
115 | static int dwarf2_loclist_index; | |
116 | static int dwarf2_locexpr_block_index; | |
117 | static int dwarf2_loclist_block_index; | |
118 | ||
73869dc2 DE |
119 | /* A descriptor for dwarf sections. |
120 | ||
121 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
122 | scanned. BUFFER, READIN are filled in later when the section is read. | |
123 | If the section contained compressed data then SIZE is updated to record | |
124 | the uncompressed size of the section. | |
125 | ||
126 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
127 | creating the concept of virtual sections contained within a real section. | |
128 | In DWP V2 the sections of the input DWO files are concatenated together | |
129 | into one section, but section offsets are kept relative to the original | |
130 | input section. | |
131 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
132 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
133 | describe the virtual section. */ | |
134 | ||
dce234bc PP |
135 | struct dwarf2_section_info |
136 | { | |
73869dc2 DE |
137 | union |
138 | { | |
e5aa3347 | 139 | /* If this is a real section, the bfd section. */ |
049412e3 | 140 | asection *section; |
73869dc2 | 141 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 142 | section. */ |
73869dc2 DE |
143 | struct dwarf2_section_info *containing_section; |
144 | } s; | |
19ac8c2e | 145 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 146 | const gdb_byte *buffer; |
73869dc2 | 147 | /* The size of the section, real or virtual. */ |
dce234bc | 148 | bfd_size_type size; |
73869dc2 DE |
149 | /* If this is a virtual section, the offset in the real section. |
150 | Only valid if is_virtual. */ | |
151 | bfd_size_type virtual_offset; | |
be391dca | 152 | /* True if we have tried to read this section. */ |
73869dc2 DE |
153 | char readin; |
154 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 155 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 156 | char is_virtual; |
dce234bc PP |
157 | }; |
158 | ||
8b70b953 TT |
159 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
160 | DEF_VEC_O (dwarf2_section_info_def); | |
161 | ||
9291a0cd TT |
162 | /* All offsets in the index are of this type. It must be |
163 | architecture-independent. */ | |
164 | typedef uint32_t offset_type; | |
165 | ||
166 | DEF_VEC_I (offset_type); | |
167 | ||
156942c7 DE |
168 | /* Ensure only legit values are used. */ |
169 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
170 | do { \ | |
171 | gdb_assert ((unsigned int) (value) <= 1); \ | |
172 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
173 | } while (0) | |
174 | ||
175 | /* Ensure only legit values are used. */ | |
176 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
177 | do { \ | |
178 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
179 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
180 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
181 | } while (0) | |
182 | ||
183 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
184 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
185 | do { \ | |
186 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
187 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
188 | } while (0) | |
189 | ||
3f563c84 PA |
190 | #if WORDS_BIGENDIAN |
191 | ||
192 | /* Convert VALUE between big- and little-endian. */ | |
193 | ||
194 | static offset_type | |
195 | byte_swap (offset_type value) | |
196 | { | |
197 | offset_type result; | |
198 | ||
199 | result = (value & 0xff) << 24; | |
200 | result |= (value & 0xff00) << 8; | |
201 | result |= (value & 0xff0000) >> 8; | |
202 | result |= (value & 0xff000000) >> 24; | |
203 | return result; | |
204 | } | |
205 | ||
206 | #define MAYBE_SWAP(V) byte_swap (V) | |
207 | ||
208 | #else | |
209 | #define MAYBE_SWAP(V) static_cast<offset_type> (V) | |
210 | #endif /* WORDS_BIGENDIAN */ | |
211 | ||
212 | /* An index into a (C++) symbol name component in a symbol name as | |
213 | recorded in the mapped_index's symbol table. For each C++ symbol | |
214 | in the symbol table, we record one entry for the start of each | |
215 | component in the symbol in a table of name components, and then | |
216 | sort the table, in order to be able to binary search symbol names, | |
217 | ignoring leading namespaces, both completion and regular look up. | |
218 | For example, for symbol "A::B::C", we'll have an entry that points | |
219 | to "A::B::C", another that points to "B::C", and another for "C". | |
220 | Note that function symbols in GDB index have no parameter | |
221 | information, just the function/method names. You can convert a | |
222 | name_component to a "const char *" using the | |
223 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
224 | ||
225 | struct name_component | |
226 | { | |
227 | /* Offset in the symbol name where the component starts. Stored as | |
228 | a (32-bit) offset instead of a pointer to save memory and improve | |
229 | locality on 64-bit architectures. */ | |
230 | offset_type name_offset; | |
231 | ||
232 | /* The symbol's index in the symbol and constant pool tables of a | |
233 | mapped_index. */ | |
234 | offset_type idx; | |
235 | }; | |
236 | ||
9291a0cd TT |
237 | /* A description of the mapped index. The file format is described in |
238 | a comment by the code that writes the index. */ | |
239 | struct mapped_index | |
240 | { | |
559a7a62 JK |
241 | /* Index data format version. */ |
242 | int version; | |
243 | ||
9291a0cd TT |
244 | /* The total length of the buffer. */ |
245 | off_t total_size; | |
b11b1f88 | 246 | |
9291a0cd TT |
247 | /* A pointer to the address table data. */ |
248 | const gdb_byte *address_table; | |
b11b1f88 | 249 | |
9291a0cd TT |
250 | /* Size of the address table data in bytes. */ |
251 | offset_type address_table_size; | |
b11b1f88 | 252 | |
3876f04e DE |
253 | /* The symbol table, implemented as a hash table. */ |
254 | const offset_type *symbol_table; | |
b11b1f88 | 255 | |
9291a0cd | 256 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 257 | offset_type symbol_table_slots; |
b11b1f88 | 258 | |
9291a0cd TT |
259 | /* A pointer to the constant pool. */ |
260 | const char *constant_pool; | |
3f563c84 PA |
261 | |
262 | /* The name_component table (a sorted vector). See name_component's | |
263 | description above. */ | |
264 | std::vector<name_component> name_components; | |
265 | ||
5c58de74 PA |
266 | /* How NAME_COMPONENTS is sorted. */ |
267 | enum case_sensitivity name_components_casing; | |
268 | ||
3f563c84 PA |
269 | /* Convenience method to get at the name of the symbol at IDX in the |
270 | symbol table. */ | |
271 | const char *symbol_name_at (offset_type idx) const | |
272 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx]); } | |
5c58de74 PA |
273 | |
274 | /* Build the symbol name component sorted vector, if we haven't | |
275 | yet. */ | |
276 | void build_name_components (); | |
277 | ||
278 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
279 | possible matches for LN_NO_PARAMS in the name component | |
280 | vector. */ | |
281 | std::pair<std::vector<name_component>::const_iterator, | |
282 | std::vector<name_component>::const_iterator> | |
283 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
9291a0cd TT |
284 | }; |
285 | ||
927aa2e7 JK |
286 | /* A description of the mapped .debug_names. |
287 | Uninitialized map has CU_COUNT 0. */ | |
288 | struct mapped_debug_names | |
289 | { | |
290 | bfd_endian dwarf5_byte_order; | |
291 | bool dwarf5_is_dwarf64; | |
292 | bool augmentation_is_gdb; | |
293 | uint8_t offset_size; | |
294 | uint32_t cu_count = 0; | |
295 | uint32_t tu_count, bucket_count, name_count; | |
296 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
297 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
298 | const gdb_byte *name_table_string_offs_reordered; | |
299 | const gdb_byte *name_table_entry_offs_reordered; | |
300 | const gdb_byte *entry_pool; | |
301 | ||
302 | struct index_val | |
303 | { | |
304 | ULONGEST dwarf_tag; | |
305 | struct attr | |
306 | { | |
307 | /* Attribute name DW_IDX_*. */ | |
308 | ULONGEST dw_idx; | |
309 | ||
310 | /* Attribute form DW_FORM_*. */ | |
311 | ULONGEST form; | |
312 | ||
313 | /* Value if FORM is DW_FORM_implicit_const. */ | |
314 | LONGEST implicit_const; | |
315 | }; | |
316 | std::vector<attr> attr_vec; | |
317 | }; | |
318 | ||
319 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
320 | ||
321 | const char *namei_to_name (uint32_t namei) const; | |
322 | }; | |
323 | ||
95554aad TT |
324 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
325 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
326 | ||
52059ffd TT |
327 | struct tu_stats |
328 | { | |
329 | int nr_uniq_abbrev_tables; | |
330 | int nr_symtabs; | |
331 | int nr_symtab_sharers; | |
332 | int nr_stmt_less_type_units; | |
333 | int nr_all_type_units_reallocs; | |
334 | }; | |
335 | ||
9cdd5dbd DE |
336 | /* Collection of data recorded per objfile. |
337 | This hangs off of dwarf2_objfile_data_key. */ | |
338 | ||
6502dd73 DJ |
339 | struct dwarf2_per_objfile |
340 | { | |
330cdd98 PA |
341 | /* Construct a dwarf2_per_objfile for OBJFILE. NAMES points to the |
342 | dwarf2 section names, or is NULL if the standard ELF names are | |
343 | used. */ | |
344 | dwarf2_per_objfile (struct objfile *objfile, | |
345 | const dwarf2_debug_sections *names); | |
ae038cb0 | 346 | |
330cdd98 PA |
347 | ~dwarf2_per_objfile (); |
348 | ||
d6541620 | 349 | DISABLE_COPY_AND_ASSIGN (dwarf2_per_objfile); |
330cdd98 PA |
350 | |
351 | /* Free all cached compilation units. */ | |
352 | void free_cached_comp_units (); | |
353 | private: | |
354 | /* This function is mapped across the sections and remembers the | |
355 | offset and size of each of the debugging sections we are | |
356 | interested in. */ | |
357 | void locate_sections (bfd *abfd, asection *sectp, | |
358 | const dwarf2_debug_sections &names); | |
359 | ||
360 | public: | |
361 | dwarf2_section_info info {}; | |
362 | dwarf2_section_info abbrev {}; | |
363 | dwarf2_section_info line {}; | |
364 | dwarf2_section_info loc {}; | |
365 | dwarf2_section_info loclists {}; | |
366 | dwarf2_section_info macinfo {}; | |
367 | dwarf2_section_info macro {}; | |
368 | dwarf2_section_info str {}; | |
369 | dwarf2_section_info line_str {}; | |
370 | dwarf2_section_info ranges {}; | |
371 | dwarf2_section_info rnglists {}; | |
372 | dwarf2_section_info addr {}; | |
373 | dwarf2_section_info frame {}; | |
374 | dwarf2_section_info eh_frame {}; | |
375 | dwarf2_section_info gdb_index {}; | |
927aa2e7 JK |
376 | dwarf2_section_info debug_names {}; |
377 | dwarf2_section_info debug_aranges {}; | |
330cdd98 PA |
378 | |
379 | VEC (dwarf2_section_info_def) *types = NULL; | |
8b70b953 | 380 | |
be391dca | 381 | /* Back link. */ |
330cdd98 | 382 | struct objfile *objfile = NULL; |
be391dca | 383 | |
d467dd73 | 384 | /* Table of all the compilation units. This is used to locate |
10b3939b | 385 | the target compilation unit of a particular reference. */ |
330cdd98 | 386 | struct dwarf2_per_cu_data **all_comp_units = NULL; |
ae038cb0 DJ |
387 | |
388 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
330cdd98 | 389 | int n_comp_units = 0; |
ae038cb0 | 390 | |
1fd400ff | 391 | /* The number of .debug_types-related CUs. */ |
330cdd98 | 392 | int n_type_units = 0; |
1fd400ff | 393 | |
6aa5f3a6 DE |
394 | /* The number of elements allocated in all_type_units. |
395 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
330cdd98 | 396 | int n_allocated_type_units = 0; |
6aa5f3a6 | 397 | |
a2ce51a0 DE |
398 | /* The .debug_types-related CUs (TUs). |
399 | This is stored in malloc space because we may realloc it. */ | |
330cdd98 | 400 | struct signatured_type **all_type_units = NULL; |
1fd400ff | 401 | |
f4dc4d17 DE |
402 | /* Table of struct type_unit_group objects. |
403 | The hash key is the DW_AT_stmt_list value. */ | |
330cdd98 | 404 | htab_t type_unit_groups {}; |
72dca2f5 | 405 | |
348e048f DE |
406 | /* A table mapping .debug_types signatures to its signatured_type entry. |
407 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
330cdd98 | 408 | htab_t signatured_types {}; |
348e048f | 409 | |
f4dc4d17 DE |
410 | /* Type unit statistics, to see how well the scaling improvements |
411 | are doing. */ | |
330cdd98 | 412 | struct tu_stats tu_stats {}; |
f4dc4d17 DE |
413 | |
414 | /* A chain of compilation units that are currently read in, so that | |
415 | they can be freed later. */ | |
330cdd98 | 416 | dwarf2_per_cu_data *read_in_chain = NULL; |
f4dc4d17 | 417 | |
3019eac3 DE |
418 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
419 | This is NULL if the table hasn't been allocated yet. */ | |
330cdd98 | 420 | htab_t dwo_files {}; |
3019eac3 | 421 | |
330cdd98 PA |
422 | /* True if we've checked for whether there is a DWP file. */ |
423 | bool dwp_checked = false; | |
80626a55 DE |
424 | |
425 | /* The DWP file if there is one, or NULL. */ | |
330cdd98 | 426 | struct dwp_file *dwp_file = NULL; |
80626a55 | 427 | |
36586728 TT |
428 | /* The shared '.dwz' file, if one exists. This is used when the |
429 | original data was compressed using 'dwz -m'. */ | |
330cdd98 | 430 | struct dwz_file *dwz_file = NULL; |
36586728 | 431 | |
330cdd98 | 432 | /* A flag indicating whether this objfile has a section loaded at a |
72dca2f5 | 433 | VMA of 0. */ |
330cdd98 | 434 | bool has_section_at_zero = false; |
9291a0cd | 435 | |
ae2de4f8 DE |
436 | /* True if we are using the mapped index, |
437 | or we are faking it for OBJF_READNOW's sake. */ | |
330cdd98 | 438 | bool using_index = false; |
9291a0cd | 439 | |
ae2de4f8 | 440 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
330cdd98 | 441 | mapped_index *index_table = NULL; |
98bfdba5 | 442 | |
927aa2e7 JK |
443 | /* The mapped index, or NULL if .debug_names is missing or not being used. */ |
444 | std::unique_ptr<mapped_debug_names> debug_names_table; | |
445 | ||
7b9f3c50 | 446 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
447 | TUs typically share line table entries with a CU, so we maintain a |
448 | separate table of all line table entries to support the sharing. | |
449 | Note that while there can be way more TUs than CUs, we've already | |
450 | sorted all the TUs into "type unit groups", grouped by their | |
451 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
452 | CU and its associated TU group if there is one. */ | |
330cdd98 | 453 | htab_t quick_file_names_table {}; |
7b9f3c50 | 454 | |
98bfdba5 PA |
455 | /* Set during partial symbol reading, to prevent queueing of full |
456 | symbols. */ | |
330cdd98 | 457 | bool reading_partial_symbols = false; |
673bfd45 | 458 | |
dee91e82 | 459 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 460 | This is NULL if not allocated yet. |
02142a6c | 461 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
330cdd98 | 462 | htab_t die_type_hash {}; |
95554aad TT |
463 | |
464 | /* The CUs we recently read. */ | |
330cdd98 | 465 | VEC (dwarf2_per_cu_ptr) *just_read_cus = NULL; |
527f3840 JK |
466 | |
467 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
330cdd98 | 468 | htab_t line_header_hash {}; |
bbf2f4df PA |
469 | |
470 | /* Table containing all filenames. This is an optional because the | |
471 | table is lazily constructed on first access. */ | |
472 | gdb::optional<filename_seen_cache> filenames_cache; | |
6502dd73 DJ |
473 | }; |
474 | ||
475 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 476 | |
251d32d9 | 477 | /* Default names of the debugging sections. */ |
c906108c | 478 | |
233a11ab CS |
479 | /* Note that if the debugging section has been compressed, it might |
480 | have a name like .zdebug_info. */ | |
481 | ||
9cdd5dbd DE |
482 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
483 | { | |
251d32d9 TG |
484 | { ".debug_info", ".zdebug_info" }, |
485 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
486 | { ".debug_line", ".zdebug_line" }, | |
487 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 488 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 489 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 490 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 491 | { ".debug_str", ".zdebug_str" }, |
43988095 | 492 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 493 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 494 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 495 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 496 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
497 | { ".debug_frame", ".zdebug_frame" }, |
498 | { ".eh_frame", NULL }, | |
24d3216f | 499 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
500 | { ".debug_names", ".zdebug_names" }, |
501 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 502 | 23 |
251d32d9 | 503 | }; |
c906108c | 504 | |
80626a55 | 505 | /* List of DWO/DWP sections. */ |
3019eac3 | 506 | |
80626a55 | 507 | static const struct dwop_section_names |
3019eac3 DE |
508 | { |
509 | struct dwarf2_section_names abbrev_dwo; | |
510 | struct dwarf2_section_names info_dwo; | |
511 | struct dwarf2_section_names line_dwo; | |
512 | struct dwarf2_section_names loc_dwo; | |
43988095 | 513 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
514 | struct dwarf2_section_names macinfo_dwo; |
515 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
516 | struct dwarf2_section_names str_dwo; |
517 | struct dwarf2_section_names str_offsets_dwo; | |
518 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
519 | struct dwarf2_section_names cu_index; |
520 | struct dwarf2_section_names tu_index; | |
3019eac3 | 521 | } |
80626a55 | 522 | dwop_section_names = |
3019eac3 DE |
523 | { |
524 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
525 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
526 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
527 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 528 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
529 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
530 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
531 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
532 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
533 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
534 | { ".debug_cu_index", ".zdebug_cu_index" }, |
535 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
536 | }; |
537 | ||
c906108c SS |
538 | /* local data types */ |
539 | ||
107d2387 AC |
540 | /* The data in a compilation unit header, after target2host |
541 | translation, looks like this. */ | |
c906108c | 542 | struct comp_unit_head |
a738430d | 543 | { |
c764a876 | 544 | unsigned int length; |
a738430d | 545 | short version; |
a738430d MK |
546 | unsigned char addr_size; |
547 | unsigned char signed_addr_p; | |
9c541725 | 548 | sect_offset abbrev_sect_off; |
57349743 | 549 | |
a738430d MK |
550 | /* Size of file offsets; either 4 or 8. */ |
551 | unsigned int offset_size; | |
57349743 | 552 | |
a738430d MK |
553 | /* Size of the length field; either 4 or 12. */ |
554 | unsigned int initial_length_size; | |
57349743 | 555 | |
43988095 JK |
556 | enum dwarf_unit_type unit_type; |
557 | ||
a738430d MK |
558 | /* Offset to the first byte of this compilation unit header in the |
559 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 560 | sect_offset sect_off; |
57349743 | 561 | |
d00adf39 DE |
562 | /* Offset to first die in this cu from the start of the cu. |
563 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 564 | cu_offset first_die_cu_offset; |
43988095 JK |
565 | |
566 | /* 64-bit signature of this type unit - it is valid only for | |
567 | UNIT_TYPE DW_UT_type. */ | |
568 | ULONGEST signature; | |
569 | ||
570 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 571 | cu_offset type_cu_offset_in_tu; |
a738430d | 572 | }; |
c906108c | 573 | |
3da10d80 KS |
574 | /* Type used for delaying computation of method physnames. |
575 | See comments for compute_delayed_physnames. */ | |
576 | struct delayed_method_info | |
577 | { | |
578 | /* The type to which the method is attached, i.e., its parent class. */ | |
579 | struct type *type; | |
580 | ||
581 | /* The index of the method in the type's function fieldlists. */ | |
582 | int fnfield_index; | |
583 | ||
584 | /* The index of the method in the fieldlist. */ | |
585 | int index; | |
586 | ||
587 | /* The name of the DIE. */ | |
588 | const char *name; | |
589 | ||
590 | /* The DIE associated with this method. */ | |
591 | struct die_info *die; | |
592 | }; | |
593 | ||
594 | typedef struct delayed_method_info delayed_method_info; | |
595 | DEF_VEC_O (delayed_method_info); | |
596 | ||
e7c27a73 DJ |
597 | /* Internal state when decoding a particular compilation unit. */ |
598 | struct dwarf2_cu | |
599 | { | |
600 | /* The objfile containing this compilation unit. */ | |
601 | struct objfile *objfile; | |
602 | ||
d00adf39 | 603 | /* The header of the compilation unit. */ |
e7c27a73 | 604 | struct comp_unit_head header; |
e142c38c | 605 | |
d00adf39 DE |
606 | /* Base address of this compilation unit. */ |
607 | CORE_ADDR base_address; | |
608 | ||
609 | /* Non-zero if base_address has been set. */ | |
610 | int base_known; | |
611 | ||
e142c38c DJ |
612 | /* The language we are debugging. */ |
613 | enum language language; | |
614 | const struct language_defn *language_defn; | |
615 | ||
b0f35d58 DL |
616 | const char *producer; |
617 | ||
e142c38c DJ |
618 | /* The generic symbol table building routines have separate lists for |
619 | file scope symbols and all all other scopes (local scopes). So | |
620 | we need to select the right one to pass to add_symbol_to_list(). | |
621 | We do it by keeping a pointer to the correct list in list_in_scope. | |
622 | ||
623 | FIXME: The original dwarf code just treated the file scope as the | |
624 | first local scope, and all other local scopes as nested local | |
625 | scopes, and worked fine. Check to see if we really need to | |
626 | distinguish these in buildsym.c. */ | |
627 | struct pending **list_in_scope; | |
628 | ||
433df2d4 DE |
629 | /* The abbrev table for this CU. |
630 | Normally this points to the abbrev table in the objfile. | |
631 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
632 | struct abbrev_table *abbrev_table; | |
72bf9492 | 633 | |
b64f50a1 JK |
634 | /* Hash table holding all the loaded partial DIEs |
635 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
636 | htab_t partial_dies; |
637 | ||
638 | /* Storage for things with the same lifetime as this read-in compilation | |
639 | unit, including partial DIEs. */ | |
640 | struct obstack comp_unit_obstack; | |
641 | ||
ae038cb0 DJ |
642 | /* When multiple dwarf2_cu structures are living in memory, this field |
643 | chains them all together, so that they can be released efficiently. | |
644 | We will probably also want a generation counter so that most-recently-used | |
645 | compilation units are cached... */ | |
646 | struct dwarf2_per_cu_data *read_in_chain; | |
647 | ||
69d751e3 | 648 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
649 | struct dwarf2_per_cu_data *per_cu; |
650 | ||
651 | /* How many compilation units ago was this CU last referenced? */ | |
652 | int last_used; | |
653 | ||
b64f50a1 JK |
654 | /* A hash table of DIE cu_offset for following references with |
655 | die_info->offset.sect_off as hash. */ | |
51545339 | 656 | htab_t die_hash; |
10b3939b DJ |
657 | |
658 | /* Full DIEs if read in. */ | |
659 | struct die_info *dies; | |
660 | ||
661 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
662 | units referenced by this one. Only set during full symbol processing; | |
663 | partial symbol tables do not have dependencies. */ | |
664 | htab_t dependencies; | |
665 | ||
cb1df416 DJ |
666 | /* Header data from the line table, during full symbol processing. */ |
667 | struct line_header *line_header; | |
4c8aa72d PA |
668 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
669 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
670 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
671 | to the line header as long as this DIE is being processed. See | |
672 | process_die_scope. */ | |
673 | die_info *line_header_die_owner; | |
cb1df416 | 674 | |
3da10d80 KS |
675 | /* A list of methods which need to have physnames computed |
676 | after all type information has been read. */ | |
677 | VEC (delayed_method_info) *method_list; | |
678 | ||
96408a79 SA |
679 | /* To be copied to symtab->call_site_htab. */ |
680 | htab_t call_site_htab; | |
681 | ||
034e5797 DE |
682 | /* Non-NULL if this CU came from a DWO file. |
683 | There is an invariant here that is important to remember: | |
684 | Except for attributes copied from the top level DIE in the "main" | |
685 | (or "stub") file in preparation for reading the DWO file | |
686 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
687 | Either there isn't a DWO file (in which case this is NULL and the point | |
688 | is moot), or there is and either we're not going to read it (in which | |
689 | case this is NULL) or there is and we are reading it (in which case this | |
690 | is non-NULL). */ | |
3019eac3 DE |
691 | struct dwo_unit *dwo_unit; |
692 | ||
693 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
694 | (zero is a valid value though). | |
1dbab08b | 695 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
696 | ULONGEST addr_base; |
697 | ||
2e3cf129 DE |
698 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
699 | (zero is a valid value though). | |
1dbab08b | 700 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 701 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
702 | be used without needing to know whether DWO files are in use or not. |
703 | N.B. This does not apply to DW_AT_ranges appearing in | |
704 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
705 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
706 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
707 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
708 | ULONGEST ranges_base; |
709 | ||
ae038cb0 DJ |
710 | /* Mark used when releasing cached dies. */ |
711 | unsigned int mark : 1; | |
712 | ||
8be455d7 JK |
713 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
714 | This test is imperfect as there may exist optimized debug code not using | |
715 | any location list and still facing inlining issues if handled as | |
716 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 717 | unsigned int has_loclist : 1; |
ba919b58 | 718 | |
1b80a9fa JK |
719 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
720 | if all the producer_is_* fields are valid. This information is cached | |
721 | because profiling CU expansion showed excessive time spent in | |
722 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
723 | unsigned int checked_producer : 1; |
724 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 725 | unsigned int producer_is_gcc_lt_4_3 : 1; |
5230b05a | 726 | unsigned int producer_is_icc_lt_14 : 1; |
4d4ec4e5 TT |
727 | |
728 | /* When set, the file that we're processing is known to have | |
729 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
730 | this information, but later versions do. */ | |
731 | ||
732 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
733 | }; |
734 | ||
10b3939b DJ |
735 | /* Persistent data held for a compilation unit, even when not |
736 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 737 | read_symtab_private field of the psymtab. */ |
10b3939b | 738 | |
ae038cb0 DJ |
739 | struct dwarf2_per_cu_data |
740 | { | |
36586728 | 741 | /* The start offset and length of this compilation unit. |
45452591 | 742 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
743 | initial_length_size. |
744 | If the DIE refers to a DWO file, this is always of the original die, | |
745 | not the DWO file. */ | |
9c541725 | 746 | sect_offset sect_off; |
36586728 | 747 | unsigned int length; |
ae038cb0 | 748 | |
43988095 JK |
749 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
750 | short dwarf_version; | |
751 | ||
ae038cb0 DJ |
752 | /* Flag indicating this compilation unit will be read in before |
753 | any of the current compilation units are processed. */ | |
c764a876 | 754 | unsigned int queued : 1; |
ae038cb0 | 755 | |
0d99eb77 DE |
756 | /* This flag will be set when reading partial DIEs if we need to load |
757 | absolutely all DIEs for this compilation unit, instead of just the ones | |
758 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
759 | hash table and don't find it. */ |
760 | unsigned int load_all_dies : 1; | |
761 | ||
0186c6a7 DE |
762 | /* Non-zero if this CU is from .debug_types. |
763 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
764 | this is non-zero. */ | |
3019eac3 DE |
765 | unsigned int is_debug_types : 1; |
766 | ||
36586728 TT |
767 | /* Non-zero if this CU is from the .dwz file. */ |
768 | unsigned int is_dwz : 1; | |
769 | ||
a2ce51a0 DE |
770 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
771 | This flag is only valid if is_debug_types is true. | |
772 | We can't read a CU directly from a DWO file: There are required | |
773 | attributes in the stub. */ | |
774 | unsigned int reading_dwo_directly : 1; | |
775 | ||
7ee85ab1 DE |
776 | /* Non-zero if the TU has been read. |
777 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
778 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
779 | fetching them from random other DWOs (due to comdat folding). | |
780 | If the TU has already been read, the optimization is unnecessary | |
781 | (and unwise - we don't want to change where gdb thinks the TU lives | |
782 | "midflight"). | |
783 | This flag is only valid if is_debug_types is true. */ | |
784 | unsigned int tu_read : 1; | |
785 | ||
3019eac3 DE |
786 | /* The section this CU/TU lives in. |
787 | If the DIE refers to a DWO file, this is always the original die, | |
788 | not the DWO file. */ | |
8a0459fd | 789 | struct dwarf2_section_info *section; |
348e048f | 790 | |
17ea53c3 | 791 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
792 | of the CU cache it gets reset to NULL again. This is left as NULL for |
793 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 794 | struct dwarf2_cu *cu; |
1c379e20 | 795 | |
9cdd5dbd DE |
796 | /* The corresponding objfile. |
797 | Normally we can get the objfile from dwarf2_per_objfile. | |
798 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
799 | struct objfile *objfile; |
800 | ||
fffbe6a8 YQ |
801 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
802 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
803 | union |
804 | { | |
805 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 806 | or NULL for unread partial units. */ |
9291a0cd TT |
807 | struct partial_symtab *psymtab; |
808 | ||
809 | /* Data needed by the "quick" functions. */ | |
810 | struct dwarf2_per_cu_quick_data *quick; | |
811 | } v; | |
95554aad | 812 | |
796a7ff8 DE |
813 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
814 | while reading psymtabs, used to compute the psymtab dependencies, | |
815 | and then cleared. Then it is filled in again while reading full | |
816 | symbols, and only deleted when the objfile is destroyed. | |
817 | ||
818 | This is also used to work around a difference between the way gold | |
819 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
820 | is a gold bug. For symbols coming from TUs, gold records in the index | |
821 | the CU that includes the TU instead of the TU itself. This breaks | |
822 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
823 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
824 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
825 | we need to look in TU Z to find X. Fortunately, this is akin to | |
826 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
827 | .gdb_index version <=7 this also records the TUs that the CU referred | |
828 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
829 | indices so we only pay a price for gold generated indices. |
830 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 831 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
832 | }; |
833 | ||
348e048f DE |
834 | /* Entry in the signatured_types hash table. */ |
835 | ||
836 | struct signatured_type | |
837 | { | |
42e7ad6c | 838 | /* The "per_cu" object of this type. |
ac9ec31b | 839 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
840 | N.B.: This is the first member so that it's easy to convert pointers |
841 | between them. */ | |
842 | struct dwarf2_per_cu_data per_cu; | |
843 | ||
3019eac3 | 844 | /* The type's signature. */ |
348e048f DE |
845 | ULONGEST signature; |
846 | ||
3019eac3 | 847 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
848 | If this TU is a DWO stub and the definition lives in a DWO file |
849 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
850 | cu_offset type_offset_in_tu; |
851 | ||
852 | /* Offset in the section of the type's DIE. | |
853 | If the definition lives in a DWO file, this is the offset in the | |
854 | .debug_types.dwo section. | |
855 | The value is zero until the actual value is known. | |
856 | Zero is otherwise not a valid section offset. */ | |
857 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
858 | |
859 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
860 | can share them. This points to the containing symtab. */ | |
861 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
862 | |
863 | /* The type. | |
864 | The first time we encounter this type we fully read it in and install it | |
865 | in the symbol tables. Subsequent times we only need the type. */ | |
866 | struct type *type; | |
a2ce51a0 DE |
867 | |
868 | /* Containing DWO unit. | |
869 | This field is valid iff per_cu.reading_dwo_directly. */ | |
870 | struct dwo_unit *dwo_unit; | |
348e048f DE |
871 | }; |
872 | ||
0186c6a7 DE |
873 | typedef struct signatured_type *sig_type_ptr; |
874 | DEF_VEC_P (sig_type_ptr); | |
875 | ||
094b34ac DE |
876 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
877 | This includes type_unit_group and quick_file_names. */ | |
878 | ||
879 | struct stmt_list_hash | |
880 | { | |
881 | /* The DWO unit this table is from or NULL if there is none. */ | |
882 | struct dwo_unit *dwo_unit; | |
883 | ||
884 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 885 | sect_offset line_sect_off; |
094b34ac DE |
886 | }; |
887 | ||
f4dc4d17 DE |
888 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
889 | an object of this type. */ | |
890 | ||
891 | struct type_unit_group | |
892 | { | |
0186c6a7 | 893 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
894 | To simplify things we create an artificial CU that "includes" all the |
895 | type units using this stmt_list so that the rest of the code still has | |
896 | a "per_cu" handle on the symtab. | |
897 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 898 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
899 | struct dwarf2_per_cu_data per_cu; |
900 | ||
0186c6a7 DE |
901 | /* The TUs that share this DW_AT_stmt_list entry. |
902 | This is added to while parsing type units to build partial symtabs, | |
903 | and is deleted afterwards and not used again. */ | |
904 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 905 | |
43f3e411 | 906 | /* The compunit symtab. |
094b34ac | 907 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
908 | so we create an essentially anonymous symtab as the compunit symtab. */ |
909 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 910 | |
094b34ac DE |
911 | /* The data used to construct the hash key. */ |
912 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
913 | |
914 | /* The number of symtabs from the line header. | |
915 | The value here must match line_header.num_file_names. */ | |
916 | unsigned int num_symtabs; | |
917 | ||
918 | /* The symbol tables for this TU (obtained from the files listed in | |
919 | DW_AT_stmt_list). | |
920 | WARNING: The order of entries here must match the order of entries | |
921 | in the line header. After the first TU using this type_unit_group, the | |
922 | line header for the subsequent TUs is recreated from this. This is done | |
923 | because we need to use the same symtabs for each TU using the same | |
924 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
925 | there's no guarantee the line header doesn't have duplicate entries. */ | |
926 | struct symtab **symtabs; | |
927 | }; | |
928 | ||
73869dc2 | 929 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
930 | |
931 | struct dwo_sections | |
932 | { | |
933 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
934 | struct dwarf2_section_info line; |
935 | struct dwarf2_section_info loc; | |
43988095 | 936 | struct dwarf2_section_info loclists; |
09262596 DE |
937 | struct dwarf2_section_info macinfo; |
938 | struct dwarf2_section_info macro; | |
3019eac3 DE |
939 | struct dwarf2_section_info str; |
940 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
941 | /* In the case of a virtual DWO file, these two are unused. */ |
942 | struct dwarf2_section_info info; | |
3019eac3 DE |
943 | VEC (dwarf2_section_info_def) *types; |
944 | }; | |
945 | ||
c88ee1f0 | 946 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
947 | |
948 | struct dwo_unit | |
949 | { | |
950 | /* Backlink to the containing struct dwo_file. */ | |
951 | struct dwo_file *dwo_file; | |
952 | ||
953 | /* The "id" that distinguishes this CU/TU. | |
954 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
955 | Since signatures came first, we stick with it for consistency. */ | |
956 | ULONGEST signature; | |
957 | ||
958 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 959 | struct dwarf2_section_info *section; |
3019eac3 | 960 | |
9c541725 PA |
961 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
962 | sect_offset sect_off; | |
3019eac3 DE |
963 | unsigned int length; |
964 | ||
965 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
966 | cu_offset type_offset_in_tu; | |
967 | }; | |
968 | ||
73869dc2 DE |
969 | /* include/dwarf2.h defines the DWP section codes. |
970 | It defines a max value but it doesn't define a min value, which we | |
971 | use for error checking, so provide one. */ | |
972 | ||
973 | enum dwp_v2_section_ids | |
974 | { | |
975 | DW_SECT_MIN = 1 | |
976 | }; | |
977 | ||
80626a55 | 978 | /* Data for one DWO file. |
57d63ce2 DE |
979 | |
980 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
981 | appears in a DWP file). DWP files don't really have DWO files per se - | |
982 | comdat folding of types "loses" the DWO file they came from, and from | |
983 | a high level view DWP files appear to contain a mass of random types. | |
984 | However, to maintain consistency with the non-DWP case we pretend DWP | |
985 | files contain virtual DWO files, and we assign each TU with one virtual | |
986 | DWO file (generally based on the line and abbrev section offsets - | |
987 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
988 | |
989 | struct dwo_file | |
990 | { | |
0ac5b59e | 991 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
992 | For virtual DWO files the name is constructed from the section offsets |
993 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
994 | from related CU+TUs. */ | |
0ac5b59e DE |
995 | const char *dwo_name; |
996 | ||
997 | /* The DW_AT_comp_dir attribute. */ | |
998 | const char *comp_dir; | |
3019eac3 | 999 | |
80626a55 DE |
1000 | /* The bfd, when the file is open. Otherwise this is NULL. |
1001 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
1002 | bfd *dbfd; | |
3019eac3 | 1003 | |
73869dc2 DE |
1004 | /* The sections that make up this DWO file. |
1005 | Remember that for virtual DWO files in DWP V2, these are virtual | |
1006 | sections (for lack of a better name). */ | |
3019eac3 DE |
1007 | struct dwo_sections sections; |
1008 | ||
33c5cd75 DB |
1009 | /* The CUs in the file. |
1010 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
1011 | an extension to handle LLVM's Link Time Optimization output (where | |
1012 | multiple source files may be compiled into a single object/dwo pair). */ | |
1013 | htab_t cus; | |
3019eac3 DE |
1014 | |
1015 | /* Table of TUs in the file. | |
1016 | Each element is a struct dwo_unit. */ | |
1017 | htab_t tus; | |
1018 | }; | |
1019 | ||
80626a55 DE |
1020 | /* These sections are what may appear in a DWP file. */ |
1021 | ||
1022 | struct dwp_sections | |
1023 | { | |
73869dc2 | 1024 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
1025 | struct dwarf2_section_info str; |
1026 | struct dwarf2_section_info cu_index; | |
1027 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
1028 | |
1029 | /* These are only used by DWP version 2 files. | |
1030 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
1031 | sections are referenced by section number, and are not recorded here. | |
1032 | In DWP version 2 there is at most one copy of all these sections, each | |
1033 | section being (effectively) comprised of the concatenation of all of the | |
1034 | individual sections that exist in the version 1 format. | |
1035 | To keep the code simple we treat each of these concatenated pieces as a | |
1036 | section itself (a virtual section?). */ | |
1037 | struct dwarf2_section_info abbrev; | |
1038 | struct dwarf2_section_info info; | |
1039 | struct dwarf2_section_info line; | |
1040 | struct dwarf2_section_info loc; | |
1041 | struct dwarf2_section_info macinfo; | |
1042 | struct dwarf2_section_info macro; | |
1043 | struct dwarf2_section_info str_offsets; | |
1044 | struct dwarf2_section_info types; | |
80626a55 DE |
1045 | }; |
1046 | ||
73869dc2 DE |
1047 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
1048 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 1049 | |
73869dc2 | 1050 | struct virtual_v1_dwo_sections |
80626a55 DE |
1051 | { |
1052 | struct dwarf2_section_info abbrev; | |
1053 | struct dwarf2_section_info line; | |
1054 | struct dwarf2_section_info loc; | |
1055 | struct dwarf2_section_info macinfo; | |
1056 | struct dwarf2_section_info macro; | |
1057 | struct dwarf2_section_info str_offsets; | |
1058 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 1059 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
1060 | struct dwarf2_section_info info_or_types; |
1061 | }; | |
1062 | ||
73869dc2 DE |
1063 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
1064 | In version 2, the sections of the DWO files are concatenated together | |
1065 | and stored in one section of that name. Thus each ELF section contains | |
1066 | several "virtual" sections. */ | |
1067 | ||
1068 | struct virtual_v2_dwo_sections | |
1069 | { | |
1070 | bfd_size_type abbrev_offset; | |
1071 | bfd_size_type abbrev_size; | |
1072 | ||
1073 | bfd_size_type line_offset; | |
1074 | bfd_size_type line_size; | |
1075 | ||
1076 | bfd_size_type loc_offset; | |
1077 | bfd_size_type loc_size; | |
1078 | ||
1079 | bfd_size_type macinfo_offset; | |
1080 | bfd_size_type macinfo_size; | |
1081 | ||
1082 | bfd_size_type macro_offset; | |
1083 | bfd_size_type macro_size; | |
1084 | ||
1085 | bfd_size_type str_offsets_offset; | |
1086 | bfd_size_type str_offsets_size; | |
1087 | ||
1088 | /* Each DWP hash table entry records one CU or one TU. | |
1089 | That is recorded here, and copied to dwo_unit.section. */ | |
1090 | bfd_size_type info_or_types_offset; | |
1091 | bfd_size_type info_or_types_size; | |
1092 | }; | |
1093 | ||
80626a55 DE |
1094 | /* Contents of DWP hash tables. */ |
1095 | ||
1096 | struct dwp_hash_table | |
1097 | { | |
73869dc2 | 1098 | uint32_t version, nr_columns; |
80626a55 | 1099 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
1100 | const gdb_byte *hash_table, *unit_table; |
1101 | union | |
1102 | { | |
1103 | struct | |
1104 | { | |
1105 | const gdb_byte *indices; | |
1106 | } v1; | |
1107 | struct | |
1108 | { | |
1109 | /* This is indexed by column number and gives the id of the section | |
1110 | in that column. */ | |
1111 | #define MAX_NR_V2_DWO_SECTIONS \ | |
1112 | (1 /* .debug_info or .debug_types */ \ | |
1113 | + 1 /* .debug_abbrev */ \ | |
1114 | + 1 /* .debug_line */ \ | |
1115 | + 1 /* .debug_loc */ \ | |
1116 | + 1 /* .debug_str_offsets */ \ | |
1117 | + 1 /* .debug_macro or .debug_macinfo */) | |
1118 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
1119 | const gdb_byte *offsets; | |
1120 | const gdb_byte *sizes; | |
1121 | } v2; | |
1122 | } section_pool; | |
80626a55 DE |
1123 | }; |
1124 | ||
1125 | /* Data for one DWP file. */ | |
1126 | ||
1127 | struct dwp_file | |
1128 | { | |
1129 | /* Name of the file. */ | |
1130 | const char *name; | |
1131 | ||
73869dc2 DE |
1132 | /* File format version. */ |
1133 | int version; | |
1134 | ||
93417882 | 1135 | /* The bfd. */ |
80626a55 DE |
1136 | bfd *dbfd; |
1137 | ||
1138 | /* Section info for this file. */ | |
1139 | struct dwp_sections sections; | |
1140 | ||
57d63ce2 | 1141 | /* Table of CUs in the file. */ |
80626a55 DE |
1142 | const struct dwp_hash_table *cus; |
1143 | ||
1144 | /* Table of TUs in the file. */ | |
1145 | const struct dwp_hash_table *tus; | |
1146 | ||
19ac8c2e DE |
1147 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
1148 | htab_t loaded_cus; | |
1149 | htab_t loaded_tus; | |
80626a55 | 1150 | |
73869dc2 DE |
1151 | /* Table to map ELF section numbers to their sections. |
1152 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
1153 | unsigned int num_sections; |
1154 | asection **elf_sections; | |
1155 | }; | |
1156 | ||
36586728 TT |
1157 | /* This represents a '.dwz' file. */ |
1158 | ||
1159 | struct dwz_file | |
1160 | { | |
1161 | /* A dwz file can only contain a few sections. */ | |
1162 | struct dwarf2_section_info abbrev; | |
1163 | struct dwarf2_section_info info; | |
1164 | struct dwarf2_section_info str; | |
1165 | struct dwarf2_section_info line; | |
1166 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1167 | struct dwarf2_section_info gdb_index; |
927aa2e7 | 1168 | struct dwarf2_section_info debug_names; |
36586728 TT |
1169 | |
1170 | /* The dwz's BFD. */ | |
1171 | bfd *dwz_bfd; | |
1172 | }; | |
1173 | ||
0963b4bd MS |
1174 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1175 | al. which are used for both .debug_info and .debug_types dies. | |
1176 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1177 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1178 | |
1179 | struct die_reader_specs | |
1180 | { | |
a32a8923 | 1181 | /* The bfd of die_section. */ |
93311388 DE |
1182 | bfd* abfd; |
1183 | ||
1184 | /* The CU of the DIE we are parsing. */ | |
1185 | struct dwarf2_cu *cu; | |
1186 | ||
80626a55 | 1187 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1188 | struct dwo_file *dwo_file; |
1189 | ||
dee91e82 | 1190 | /* The section the die comes from. |
3019eac3 | 1191 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1192 | struct dwarf2_section_info *die_section; |
1193 | ||
1194 | /* die_section->buffer. */ | |
d521ce57 | 1195 | const gdb_byte *buffer; |
f664829e DE |
1196 | |
1197 | /* The end of the buffer. */ | |
1198 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1199 | |
1200 | /* The value of the DW_AT_comp_dir attribute. */ | |
1201 | const char *comp_dir; | |
93311388 DE |
1202 | }; |
1203 | ||
fd820528 | 1204 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1205 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1206 | const gdb_byte *info_ptr, |
dee91e82 DE |
1207 | struct die_info *comp_unit_die, |
1208 | int has_children, | |
1209 | void *data); | |
1210 | ||
ecfb656c PA |
1211 | /* A 1-based directory index. This is a strong typedef to prevent |
1212 | accidentally using a directory index as a 0-based index into an | |
1213 | array/vector. */ | |
1214 | enum class dir_index : unsigned int {}; | |
1215 | ||
1216 | /* Likewise, a 1-based file name index. */ | |
1217 | enum class file_name_index : unsigned int {}; | |
1218 | ||
52059ffd TT |
1219 | struct file_entry |
1220 | { | |
fff8551c PA |
1221 | file_entry () = default; |
1222 | ||
ecfb656c | 1223 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
1224 | unsigned int mod_time_, unsigned int length_) |
1225 | : name (name_), | |
ecfb656c | 1226 | d_index (d_index_), |
fff8551c PA |
1227 | mod_time (mod_time_), |
1228 | length (length_) | |
1229 | {} | |
1230 | ||
ecfb656c PA |
1231 | /* Return the include directory at D_INDEX stored in LH. Returns |
1232 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
1233 | const char *include_dir (const line_header *lh) const; |
1234 | ||
fff8551c PA |
1235 | /* The file name. Note this is an observing pointer. The memory is |
1236 | owned by debug_line_buffer. */ | |
1237 | const char *name {}; | |
1238 | ||
8c43009f | 1239 | /* The directory index (1-based). */ |
ecfb656c | 1240 | dir_index d_index {}; |
fff8551c PA |
1241 | |
1242 | unsigned int mod_time {}; | |
1243 | ||
1244 | unsigned int length {}; | |
1245 | ||
1246 | /* True if referenced by the Line Number Program. */ | |
1247 | bool included_p {}; | |
1248 | ||
83769d0b | 1249 | /* The associated symbol table, if any. */ |
fff8551c | 1250 | struct symtab *symtab {}; |
52059ffd TT |
1251 | }; |
1252 | ||
debd256d JB |
1253 | /* The line number information for a compilation unit (found in the |
1254 | .debug_line section) begins with a "statement program header", | |
1255 | which contains the following information. */ | |
1256 | struct line_header | |
1257 | { | |
fff8551c PA |
1258 | line_header () |
1259 | : offset_in_dwz {} | |
1260 | {} | |
1261 | ||
1262 | /* Add an entry to the include directory table. */ | |
1263 | void add_include_dir (const char *include_dir); | |
1264 | ||
1265 | /* Add an entry to the file name table. */ | |
ecfb656c | 1266 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1267 | unsigned int mod_time, unsigned int length); |
1268 | ||
ecfb656c | 1269 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1270 | is out of bounds. */ |
ecfb656c | 1271 | const char *include_dir_at (dir_index index) const |
8c43009f | 1272 | { |
ecfb656c PA |
1273 | /* Convert directory index number (1-based) to vector index |
1274 | (0-based). */ | |
1275 | size_t vec_index = to_underlying (index) - 1; | |
1276 | ||
1277 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 1278 | return NULL; |
ecfb656c | 1279 | return include_dirs[vec_index]; |
8c43009f PA |
1280 | } |
1281 | ||
ecfb656c | 1282 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1283 | is out of bounds. */ |
ecfb656c | 1284 | file_entry *file_name_at (file_name_index index) |
8c43009f | 1285 | { |
ecfb656c PA |
1286 | /* Convert file name index number (1-based) to vector index |
1287 | (0-based). */ | |
1288 | size_t vec_index = to_underlying (index) - 1; | |
1289 | ||
1290 | if (vec_index >= file_names.size ()) | |
fff8551c | 1291 | return NULL; |
ecfb656c | 1292 | return &file_names[vec_index]; |
fff8551c PA |
1293 | } |
1294 | ||
1295 | /* Const version of the above. */ | |
1296 | const file_entry *file_name_at (unsigned int index) const | |
1297 | { | |
1298 | if (index >= file_names.size ()) | |
8c43009f PA |
1299 | return NULL; |
1300 | return &file_names[index]; | |
1301 | } | |
1302 | ||
527f3840 | 1303 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1304 | sect_offset sect_off {}; |
527f3840 JK |
1305 | |
1306 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1307 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1308 | ||
1309 | unsigned int total_length {}; | |
1310 | unsigned short version {}; | |
1311 | unsigned int header_length {}; | |
1312 | unsigned char minimum_instruction_length {}; | |
1313 | unsigned char maximum_ops_per_instruction {}; | |
1314 | unsigned char default_is_stmt {}; | |
1315 | int line_base {}; | |
1316 | unsigned char line_range {}; | |
1317 | unsigned char opcode_base {}; | |
debd256d JB |
1318 | |
1319 | /* standard_opcode_lengths[i] is the number of operands for the | |
1320 | standard opcode whose value is i. This means that | |
1321 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1322 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1323 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1324 | |
fff8551c PA |
1325 | /* The include_directories table. Note these are observing |
1326 | pointers. The memory is owned by debug_line_buffer. */ | |
1327 | std::vector<const char *> include_dirs; | |
debd256d | 1328 | |
fff8551c PA |
1329 | /* The file_names table. */ |
1330 | std::vector<file_entry> file_names; | |
debd256d JB |
1331 | |
1332 | /* The start and end of the statement program following this | |
6502dd73 | 1333 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1334 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1335 | }; |
c906108c | 1336 | |
fff8551c PA |
1337 | typedef std::unique_ptr<line_header> line_header_up; |
1338 | ||
8c43009f PA |
1339 | const char * |
1340 | file_entry::include_dir (const line_header *lh) const | |
1341 | { | |
ecfb656c | 1342 | return lh->include_dir_at (d_index); |
8c43009f PA |
1343 | } |
1344 | ||
c906108c | 1345 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1346 | need this much information. */ |
c906108c SS |
1347 | struct partial_die_info |
1348 | { | |
72bf9492 | 1349 | /* Offset of this DIE. */ |
9c541725 | 1350 | sect_offset sect_off; |
72bf9492 DJ |
1351 | |
1352 | /* DWARF-2 tag for this DIE. */ | |
1353 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1354 | ||
72bf9492 DJ |
1355 | /* Assorted flags describing the data found in this DIE. */ |
1356 | unsigned int has_children : 1; | |
1357 | unsigned int is_external : 1; | |
1358 | unsigned int is_declaration : 1; | |
1359 | unsigned int has_type : 1; | |
1360 | unsigned int has_specification : 1; | |
1361 | unsigned int has_pc_info : 1; | |
481860b3 | 1362 | unsigned int may_be_inlined : 1; |
72bf9492 | 1363 | |
0c1b455e TT |
1364 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1365 | unsigned int main_subprogram : 1; | |
1366 | ||
72bf9492 DJ |
1367 | /* Flag set if the SCOPE field of this structure has been |
1368 | computed. */ | |
1369 | unsigned int scope_set : 1; | |
1370 | ||
fa4028e9 JB |
1371 | /* Flag set if the DIE has a byte_size attribute. */ |
1372 | unsigned int has_byte_size : 1; | |
1373 | ||
ff908ebf AW |
1374 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1375 | unsigned int has_const_value : 1; | |
1376 | ||
98bfdba5 PA |
1377 | /* Flag set if any of the DIE's children are template arguments. */ |
1378 | unsigned int has_template_arguments : 1; | |
1379 | ||
abc72ce4 DE |
1380 | /* Flag set if fixup_partial_die has been called on this die. */ |
1381 | unsigned int fixup_called : 1; | |
1382 | ||
36586728 TT |
1383 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1384 | unsigned int is_dwz : 1; | |
1385 | ||
1386 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1387 | unsigned int spec_is_dwz : 1; | |
1388 | ||
72bf9492 | 1389 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1390 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1391 | const char *name; |
72bf9492 | 1392 | |
abc72ce4 DE |
1393 | /* The linkage name, if present. */ |
1394 | const char *linkage_name; | |
1395 | ||
72bf9492 DJ |
1396 | /* The scope to prepend to our children. This is generally |
1397 | allocated on the comp_unit_obstack, so will disappear | |
1398 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1399 | const char *scope; |
72bf9492 | 1400 | |
95554aad TT |
1401 | /* Some data associated with the partial DIE. The tag determines |
1402 | which field is live. */ | |
1403 | union | |
1404 | { | |
1405 | /* The location description associated with this DIE, if any. */ | |
1406 | struct dwarf_block *locdesc; | |
1407 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1408 | sect_offset sect_off; |
95554aad | 1409 | } d; |
72bf9492 DJ |
1410 | |
1411 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1412 | CORE_ADDR lowpc; |
1413 | CORE_ADDR highpc; | |
72bf9492 | 1414 | |
93311388 | 1415 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1416 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1417 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1418 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1419 | const gdb_byte *sibling; |
72bf9492 DJ |
1420 | |
1421 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1422 | DW_AT_specification (or DW_AT_abstract_origin or | |
1423 | DW_AT_extension). */ | |
b64f50a1 | 1424 | sect_offset spec_offset; |
72bf9492 DJ |
1425 | |
1426 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1427 | if any. */ | |
1428 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1429 | }; |
1430 | ||
0963b4bd | 1431 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1432 | struct abbrev_info |
1433 | { | |
1434 | unsigned int number; /* number identifying abbrev */ | |
1435 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1436 | unsigned short has_children; /* boolean */ |
1437 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1438 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1439 | struct abbrev_info *next; /* next in chain */ | |
1440 | }; | |
1441 | ||
1442 | struct attr_abbrev | |
1443 | { | |
9d25dd43 DE |
1444 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1445 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1446 | |
1447 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1448 | LONGEST implicit_const; | |
c906108c SS |
1449 | }; |
1450 | ||
433df2d4 DE |
1451 | /* Size of abbrev_table.abbrev_hash_table. */ |
1452 | #define ABBREV_HASH_SIZE 121 | |
1453 | ||
1454 | /* Top level data structure to contain an abbreviation table. */ | |
1455 | ||
1456 | struct abbrev_table | |
1457 | { | |
f4dc4d17 DE |
1458 | /* Where the abbrev table came from. |
1459 | This is used as a sanity check when the table is used. */ | |
9c541725 | 1460 | sect_offset sect_off; |
433df2d4 DE |
1461 | |
1462 | /* Storage for the abbrev table. */ | |
1463 | struct obstack abbrev_obstack; | |
1464 | ||
1465 | /* Hash table of abbrevs. | |
1466 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1467 | It could be statically allocated, but the previous code didn't so we | |
1468 | don't either. */ | |
1469 | struct abbrev_info **abbrevs; | |
1470 | }; | |
1471 | ||
0963b4bd | 1472 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1473 | struct attribute |
1474 | { | |
9d25dd43 | 1475 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1476 | ENUM_BITFIELD(dwarf_form) form : 15; |
1477 | ||
1478 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1479 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1480 | here for better struct attribute alignment. */ | |
1481 | unsigned int string_is_canonical : 1; | |
1482 | ||
b60c80d6 DJ |
1483 | union |
1484 | { | |
15d034d0 | 1485 | const char *str; |
b60c80d6 | 1486 | struct dwarf_block *blk; |
43bbcdc2 PH |
1487 | ULONGEST unsnd; |
1488 | LONGEST snd; | |
b60c80d6 | 1489 | CORE_ADDR addr; |
ac9ec31b | 1490 | ULONGEST signature; |
b60c80d6 DJ |
1491 | } |
1492 | u; | |
1493 | }; | |
1494 | ||
0963b4bd | 1495 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1496 | struct die_info |
1497 | { | |
76815b17 DE |
1498 | /* DWARF-2 tag for this DIE. */ |
1499 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1500 | ||
1501 | /* Number of attributes */ | |
98bfdba5 PA |
1502 | unsigned char num_attrs; |
1503 | ||
1504 | /* True if we're presently building the full type name for the | |
1505 | type derived from this DIE. */ | |
1506 | unsigned char building_fullname : 1; | |
76815b17 | 1507 | |
adde2bff DE |
1508 | /* True if this die is in process. PR 16581. */ |
1509 | unsigned char in_process : 1; | |
1510 | ||
76815b17 DE |
1511 | /* Abbrev number */ |
1512 | unsigned int abbrev; | |
1513 | ||
93311388 | 1514 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1515 | sect_offset sect_off; |
78ba4af6 JB |
1516 | |
1517 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1518 | points to this die's parent; CHILD points to the first child of | |
1519 | this node; and all the children of a given node are chained | |
4950bc1c | 1520 | together via their SIBLING fields. */ |
639d11d3 DC |
1521 | struct die_info *child; /* Its first child, if any. */ |
1522 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1523 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1524 | |
b60c80d6 DJ |
1525 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1526 | zero, but it's not common and zero-sized arrays are not | |
1527 | sufficiently portable C. */ | |
1528 | struct attribute attrs[1]; | |
c906108c SS |
1529 | }; |
1530 | ||
0963b4bd | 1531 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1532 | |
1533 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1534 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1535 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1536 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1537 | #define DW_SND(attr) ((attr)->u.snd) | |
1538 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1539 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1540 | |
0963b4bd | 1541 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1542 | struct dwarf_block |
1543 | { | |
56eb65bd | 1544 | size_t size; |
1d6edc3c JK |
1545 | |
1546 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1547 | const gdb_byte *data; |
c906108c SS |
1548 | }; |
1549 | ||
c906108c SS |
1550 | #ifndef ATTR_ALLOC_CHUNK |
1551 | #define ATTR_ALLOC_CHUNK 4 | |
1552 | #endif | |
1553 | ||
c906108c SS |
1554 | /* Allocate fields for structs, unions and enums in this size. */ |
1555 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1556 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1557 | #endif | |
1558 | ||
c906108c SS |
1559 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1560 | but this would require a corresponding change in unpack_field_as_long | |
1561 | and friends. */ | |
1562 | static int bits_per_byte = 8; | |
1563 | ||
52059ffd TT |
1564 | struct nextfield |
1565 | { | |
1566 | struct nextfield *next; | |
1567 | int accessibility; | |
1568 | int virtuality; | |
1569 | struct field field; | |
1570 | }; | |
1571 | ||
1572 | struct nextfnfield | |
1573 | { | |
1574 | struct nextfnfield *next; | |
1575 | struct fn_field fnfield; | |
1576 | }; | |
1577 | ||
1578 | struct fnfieldlist | |
1579 | { | |
1580 | const char *name; | |
1581 | int length; | |
1582 | struct nextfnfield *head; | |
1583 | }; | |
1584 | ||
883fd55a | 1585 | struct decl_field_list |
52059ffd | 1586 | { |
883fd55a KS |
1587 | struct decl_field field; |
1588 | struct decl_field_list *next; | |
52059ffd TT |
1589 | }; |
1590 | ||
c906108c SS |
1591 | /* The routines that read and process dies for a C struct or C++ class |
1592 | pass lists of data member fields and lists of member function fields | |
1593 | in an instance of a field_info structure, as defined below. */ | |
1594 | struct field_info | |
c5aa993b | 1595 | { |
0963b4bd | 1596 | /* List of data member and baseclasses fields. */ |
52059ffd | 1597 | struct nextfield *fields, *baseclasses; |
c906108c | 1598 | |
7d0ccb61 | 1599 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1600 | int nfields; |
c906108c | 1601 | |
c5aa993b JM |
1602 | /* Number of baseclasses. */ |
1603 | int nbaseclasses; | |
c906108c | 1604 | |
c5aa993b JM |
1605 | /* Set if the accesibility of one of the fields is not public. */ |
1606 | int non_public_fields; | |
c906108c | 1607 | |
c5aa993b JM |
1608 | /* Member function fieldlist array, contains name of possibly overloaded |
1609 | member function, number of overloaded member functions and a pointer | |
1610 | to the head of the member function field chain. */ | |
52059ffd | 1611 | struct fnfieldlist *fnfieldlists; |
c906108c | 1612 | |
c5aa993b JM |
1613 | /* Number of entries in the fnfieldlists array. */ |
1614 | int nfnfields; | |
98751a41 JK |
1615 | |
1616 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1617 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
883fd55a | 1618 | struct decl_field_list *typedef_field_list; |
98751a41 | 1619 | unsigned typedef_field_list_count; |
883fd55a KS |
1620 | |
1621 | /* Nested types defined by this class and the number of elements in this | |
1622 | list. */ | |
1623 | struct decl_field_list *nested_types_list; | |
1624 | unsigned nested_types_list_count; | |
c5aa993b | 1625 | }; |
c906108c | 1626 | |
10b3939b DJ |
1627 | /* One item on the queue of compilation units to read in full symbols |
1628 | for. */ | |
1629 | struct dwarf2_queue_item | |
1630 | { | |
1631 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1632 | enum language pretend_language; |
10b3939b DJ |
1633 | struct dwarf2_queue_item *next; |
1634 | }; | |
1635 | ||
1636 | /* The current queue. */ | |
1637 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1638 | ||
ae038cb0 DJ |
1639 | /* Loaded secondary compilation units are kept in memory until they |
1640 | have not been referenced for the processing of this many | |
1641 | compilation units. Set this to zero to disable caching. Cache | |
1642 | sizes of up to at least twenty will improve startup time for | |
1643 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1644 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1645 | static void |
b4f54984 DE |
1646 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1647 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1648 | { |
3e43a32a | 1649 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1650 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1651 | value); |
1652 | } | |
4390d890 | 1653 | \f |
c906108c SS |
1654 | /* local function prototypes */ |
1655 | ||
a32a8923 DE |
1656 | static const char *get_section_name (const struct dwarf2_section_info *); |
1657 | ||
1658 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1659 | ||
918dd910 JK |
1660 | static void dwarf2_find_base_address (struct die_info *die, |
1661 | struct dwarf2_cu *cu); | |
1662 | ||
0018ea6f DE |
1663 | static struct partial_symtab *create_partial_symtab |
1664 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1665 | ||
f1902523 JK |
1666 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1667 | const gdb_byte *info_ptr, | |
1668 | struct die_info *type_unit_die, | |
1669 | int has_children, void *data); | |
1670 | ||
c67a9c90 | 1671 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1672 | |
72bf9492 DJ |
1673 | static void scan_partial_symbols (struct partial_die_info *, |
1674 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1675 | int, struct dwarf2_cu *); |
c906108c | 1676 | |
72bf9492 DJ |
1677 | static void add_partial_symbol (struct partial_die_info *, |
1678 | struct dwarf2_cu *); | |
63d06c5c | 1679 | |
72bf9492 DJ |
1680 | static void add_partial_namespace (struct partial_die_info *pdi, |
1681 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1682 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1683 | |
5d7cb8df | 1684 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1685 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1686 | struct dwarf2_cu *cu); |
1687 | ||
72bf9492 DJ |
1688 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1689 | struct dwarf2_cu *cu); | |
91c24f0a | 1690 | |
bc30ff58 JB |
1691 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1692 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1693 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1694 | |
257e7a09 YQ |
1695 | static void dwarf2_read_symtab (struct partial_symtab *, |
1696 | struct objfile *); | |
c906108c | 1697 | |
a14ed312 | 1698 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1699 | |
433df2d4 DE |
1700 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1701 | (const struct abbrev_table *, unsigned int); | |
1702 | ||
1703 | static struct abbrev_table *abbrev_table_read_table | |
1704 | (struct dwarf2_section_info *, sect_offset); | |
1705 | ||
1706 | static void abbrev_table_free (struct abbrev_table *); | |
1707 | ||
f4dc4d17 DE |
1708 | static void abbrev_table_free_cleanup (void *); |
1709 | ||
dee91e82 DE |
1710 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1711 | struct dwarf2_section_info *); | |
c906108c | 1712 | |
f3dd6933 | 1713 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1714 | |
d521ce57 | 1715 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1716 | |
dee91e82 | 1717 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1718 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1719 | |
d521ce57 TT |
1720 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1721 | struct partial_die_info *, | |
1722 | struct abbrev_info *, | |
1723 | unsigned int, | |
1724 | const gdb_byte *); | |
c906108c | 1725 | |
36586728 | 1726 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1727 | struct dwarf2_cu *); |
72bf9492 DJ |
1728 | |
1729 | static void fixup_partial_die (struct partial_die_info *, | |
1730 | struct dwarf2_cu *); | |
1731 | ||
d521ce57 TT |
1732 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1733 | struct attribute *, struct attr_abbrev *, | |
1734 | const gdb_byte *); | |
a8329558 | 1735 | |
a1855c1d | 1736 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1737 | |
a1855c1d | 1738 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1739 | |
a1855c1d | 1740 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1741 | |
a1855c1d | 1742 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1743 | |
a1855c1d | 1744 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1745 | |
d521ce57 | 1746 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1747 | unsigned int *); |
c906108c | 1748 | |
d521ce57 | 1749 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1750 | |
1751 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1752 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1753 | unsigned int *, unsigned int *); |
613e1657 | 1754 | |
d521ce57 TT |
1755 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1756 | const struct comp_unit_head *, | |
c764a876 DE |
1757 | unsigned int *); |
1758 | ||
d521ce57 | 1759 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1760 | |
f4dc4d17 DE |
1761 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1762 | sect_offset); | |
1763 | ||
d521ce57 | 1764 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1765 | |
d521ce57 | 1766 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1767 | |
d521ce57 TT |
1768 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1769 | const struct comp_unit_head *, | |
1770 | unsigned int *); | |
4bdf3d34 | 1771 | |
43988095 JK |
1772 | static const char *read_indirect_line_string (bfd *, const gdb_byte *, |
1773 | const struct comp_unit_head *, | |
1774 | unsigned int *); | |
36586728 | 1775 | |
927aa2e7 JK |
1776 | static const char *read_indirect_string_at_offset (bfd *abfd, |
1777 | LONGEST str_offset); | |
1778 | ||
43988095 | 1779 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
c906108c | 1780 | |
d521ce57 | 1781 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1782 | |
d521ce57 TT |
1783 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1784 | const gdb_byte *, | |
3019eac3 DE |
1785 | unsigned int *); |
1786 | ||
d521ce57 | 1787 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1788 | ULONGEST str_index); |
3019eac3 | 1789 | |
e142c38c | 1790 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1791 | |
e142c38c DJ |
1792 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1793 | struct dwarf2_cu *); | |
c906108c | 1794 | |
348e048f | 1795 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1796 | unsigned int); |
348e048f | 1797 | |
7d45c7c3 KB |
1798 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1799 | struct dwarf2_cu *cu); | |
1800 | ||
05cf31d1 JB |
1801 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1802 | struct dwarf2_cu *cu); | |
1803 | ||
e142c38c | 1804 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1805 | |
e142c38c | 1806 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1807 | struct dwarf2_cu **); |
63d06c5c | 1808 | |
9c541725 | 1809 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1810 | struct dwarf2_cu *cu); |
debd256d | 1811 | |
f3f5162e | 1812 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1813 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1814 | CORE_ADDR, int decode_mapping); |
c906108c | 1815 | |
4d663531 | 1816 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1817 | |
43f3e411 DE |
1818 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1819 | const char *, const char *, | |
1820 | CORE_ADDR); | |
f4dc4d17 | 1821 | |
a14ed312 | 1822 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1823 | struct dwarf2_cu *); |
c906108c | 1824 | |
34eaf542 TT |
1825 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1826 | struct dwarf2_cu *, struct symbol *); | |
1827 | ||
ff39bb5e | 1828 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1829 | struct dwarf2_cu *); |
c906108c | 1830 | |
ff39bb5e | 1831 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1832 | struct type *type, |
1833 | const char *name, | |
1834 | struct obstack *obstack, | |
12df843f | 1835 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1836 | const gdb_byte **bytes, |
98bfdba5 | 1837 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1838 | |
e7c27a73 | 1839 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1840 | |
b4ba55a1 JB |
1841 | static int need_gnat_info (struct dwarf2_cu *); |
1842 | ||
3e43a32a MS |
1843 | static struct type *die_descriptive_type (struct die_info *, |
1844 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1845 | |
1846 | static void set_descriptive_type (struct type *, struct die_info *, | |
1847 | struct dwarf2_cu *); | |
1848 | ||
e7c27a73 DJ |
1849 | static struct type *die_containing_type (struct die_info *, |
1850 | struct dwarf2_cu *); | |
c906108c | 1851 | |
ff39bb5e | 1852 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1853 | struct dwarf2_cu *); |
c906108c | 1854 | |
f792889a | 1855 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1856 | |
673bfd45 DE |
1857 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1858 | ||
0d5cff50 | 1859 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1860 | |
6e70227d | 1861 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1862 | const char *suffix, int physname, |
1863 | struct dwarf2_cu *cu); | |
63d06c5c | 1864 | |
e7c27a73 | 1865 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1866 | |
348e048f DE |
1867 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1868 | ||
e7c27a73 | 1869 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1870 | |
e7c27a73 | 1871 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1872 | |
96408a79 SA |
1873 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1874 | ||
71a3c369 TT |
1875 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1876 | ||
ff013f42 JK |
1877 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1878 | struct dwarf2_cu *, struct partial_symtab *); | |
1879 | ||
3a2b436a | 1880 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1881 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1882 | enum pc_bounds_kind |
1883 | { | |
e385593e | 1884 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1885 | PC_BOUNDS_NOT_PRESENT, |
1886 | ||
e385593e JK |
1887 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1888 | were present but they do not form a valid range of PC addresses. */ | |
1889 | PC_BOUNDS_INVALID, | |
1890 | ||
3a2b436a JK |
1891 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1892 | PC_BOUNDS_RANGES, | |
1893 | ||
1894 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1895 | PC_BOUNDS_HIGH_LOW, | |
1896 | }; | |
1897 | ||
1898 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1899 | CORE_ADDR *, CORE_ADDR *, | |
1900 | struct dwarf2_cu *, | |
1901 | struct partial_symtab *); | |
c906108c | 1902 | |
fae299cd DC |
1903 | static void get_scope_pc_bounds (struct die_info *, |
1904 | CORE_ADDR *, CORE_ADDR *, | |
1905 | struct dwarf2_cu *); | |
1906 | ||
801e3a5b JB |
1907 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1908 | CORE_ADDR, struct dwarf2_cu *); | |
1909 | ||
a14ed312 | 1910 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1911 | struct dwarf2_cu *); |
c906108c | 1912 | |
a14ed312 | 1913 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1914 | struct type *, struct dwarf2_cu *); |
c906108c | 1915 | |
a14ed312 | 1916 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1917 | struct die_info *, struct type *, |
e7c27a73 | 1918 | struct dwarf2_cu *); |
c906108c | 1919 | |
a14ed312 | 1920 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1921 | struct type *, |
1922 | struct dwarf2_cu *); | |
c906108c | 1923 | |
134d01f1 | 1924 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1925 | |
e7c27a73 | 1926 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1927 | |
e7c27a73 | 1928 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1929 | |
5d7cb8df JK |
1930 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1931 | ||
22cee43f PMR |
1932 | static struct using_direct **using_directives (enum language); |
1933 | ||
27aa8d6a SW |
1934 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1935 | ||
74921315 KS |
1936 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1937 | ||
f55ee35c JK |
1938 | static struct type *read_module_type (struct die_info *die, |
1939 | struct dwarf2_cu *cu); | |
1940 | ||
38d518c9 | 1941 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1942 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1943 | |
134d01f1 | 1944 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1945 | |
e7c27a73 | 1946 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1947 | |
6e70227d | 1948 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1949 | struct dwarf2_cu *); |
1950 | ||
bf6af496 | 1951 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1952 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1953 | struct die_info *); |
639d11d3 | 1954 | |
dee91e82 | 1955 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1956 | const gdb_byte *info_ptr, |
1957 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1958 | struct die_info *parent); |
1959 | ||
d521ce57 TT |
1960 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1961 | struct die_info **, const gdb_byte *, | |
1962 | int *, int); | |
3019eac3 | 1963 | |
d521ce57 TT |
1964 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1965 | struct die_info **, const gdb_byte *, | |
1966 | int *); | |
93311388 | 1967 | |
e7c27a73 | 1968 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1969 | |
15d034d0 TT |
1970 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1971 | struct obstack *); | |
71c25dea | 1972 | |
15d034d0 | 1973 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1974 | |
15d034d0 | 1975 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1976 | struct die_info *die, |
1977 | struct dwarf2_cu *cu); | |
1978 | ||
ca69b9e6 DE |
1979 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1980 | struct dwarf2_cu *cu); | |
1981 | ||
e142c38c | 1982 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1983 | struct dwarf2_cu **); |
9219021c | 1984 | |
f39c6ffd | 1985 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1986 | |
f39c6ffd | 1987 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1988 | |
f39c6ffd | 1989 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1990 | |
a121b7c1 | 1991 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1992 | |
f39c6ffd | 1993 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1994 | |
f9aca02d | 1995 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1996 | |
d97bc12b DE |
1997 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1998 | ||
1999 | static void dump_die_for_error (struct die_info *); | |
2000 | ||
2001 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
2002 | struct die_info *); | |
c906108c | 2003 | |
d97bc12b | 2004 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 2005 | |
51545339 | 2006 | static void store_in_ref_table (struct die_info *, |
10b3939b | 2007 | struct dwarf2_cu *); |
c906108c | 2008 | |
ff39bb5e | 2009 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 2010 | |
ff39bb5e | 2011 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 2012 | |
348e048f | 2013 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 2014 | const struct attribute *, |
348e048f DE |
2015 | struct dwarf2_cu **); |
2016 | ||
10b3939b | 2017 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 2018 | const struct attribute *, |
f2f0e013 | 2019 | struct dwarf2_cu **); |
c906108c | 2020 | |
348e048f | 2021 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 2022 | const struct attribute *, |
348e048f DE |
2023 | struct dwarf2_cu **); |
2024 | ||
ac9ec31b DE |
2025 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
2026 | struct dwarf2_cu *); | |
2027 | ||
2028 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 2029 | const struct attribute *, |
ac9ec31b DE |
2030 | struct dwarf2_cu *); |
2031 | ||
e5fe5e75 | 2032 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 2033 | |
52dc124a | 2034 | static void read_signatured_type (struct signatured_type *); |
348e048f | 2035 | |
63e43d3a PMR |
2036 | static int attr_to_dynamic_prop (const struct attribute *attr, |
2037 | struct die_info *die, struct dwarf2_cu *cu, | |
2038 | struct dynamic_prop *prop); | |
2039 | ||
c906108c SS |
2040 | /* memory allocation interface */ |
2041 | ||
7b5a2f43 | 2042 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 2043 | |
b60c80d6 | 2044 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 2045 | |
43f3e411 | 2046 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 2047 | |
6e5a29e1 | 2048 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 2049 | |
6e5a29e1 | 2050 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 2051 | |
6e5a29e1 | 2052 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 2053 | |
6e5a29e1 | 2054 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 2055 | |
8cf6f0b1 TT |
2056 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
2057 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 2058 | const struct attribute *attr); |
8cf6f0b1 | 2059 | |
ff39bb5e | 2060 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 2061 | struct symbol *sym, |
f1e6e072 TT |
2062 | struct dwarf2_cu *cu, |
2063 | int is_block); | |
4c2df51b | 2064 | |
d521ce57 TT |
2065 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
2066 | const gdb_byte *info_ptr, | |
2067 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 2068 | |
72bf9492 DJ |
2069 | static void free_stack_comp_unit (void *); |
2070 | ||
72bf9492 DJ |
2071 | static hashval_t partial_die_hash (const void *item); |
2072 | ||
2073 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
2074 | ||
ae038cb0 | 2075 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
9c541725 | 2076 | (sect_offset sect_off, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 2077 | |
9816fde3 | 2078 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 2079 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
2080 | |
2081 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
2082 | struct die_info *comp_unit_die, |
2083 | enum language pretend_language); | |
93311388 | 2084 | |
68dc6402 | 2085 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
2086 | |
2087 | static void free_cached_comp_units (void *); | |
2088 | ||
2089 | static void age_cached_comp_units (void); | |
2090 | ||
dee91e82 | 2091 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 2092 | |
f792889a DJ |
2093 | static struct type *set_die_type (struct die_info *, struct type *, |
2094 | struct dwarf2_cu *); | |
1c379e20 | 2095 | |
ae038cb0 DJ |
2096 | static void create_all_comp_units (struct objfile *); |
2097 | ||
0e50663e | 2098 | static int create_all_type_units (struct objfile *); |
1fd400ff | 2099 | |
95554aad TT |
2100 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
2101 | enum language); | |
10b3939b | 2102 | |
95554aad TT |
2103 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
2104 | enum language); | |
10b3939b | 2105 | |
f4dc4d17 DE |
2106 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
2107 | enum language); | |
2108 | ||
10b3939b DJ |
2109 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
2110 | struct dwarf2_per_cu_data *); | |
2111 | ||
ae038cb0 DJ |
2112 | static void dwarf2_mark (struct dwarf2_cu *); |
2113 | ||
2114 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
2115 | ||
b64f50a1 | 2116 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 2117 | struct dwarf2_per_cu_data *); |
673bfd45 | 2118 | |
f792889a | 2119 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 2120 | |
9291a0cd TT |
2121 | static void dwarf2_release_queue (void *dummy); |
2122 | ||
95554aad TT |
2123 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
2124 | enum language pretend_language); | |
2125 | ||
a0f42c21 | 2126 | static void process_queue (void); |
9291a0cd | 2127 | |
d721ba37 PA |
2128 | /* The return type of find_file_and_directory. Note, the enclosed |
2129 | string pointers are only valid while this object is valid. */ | |
2130 | ||
2131 | struct file_and_directory | |
2132 | { | |
2133 | /* The filename. This is never NULL. */ | |
2134 | const char *name; | |
2135 | ||
2136 | /* The compilation directory. NULL if not known. If we needed to | |
2137 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
2138 | points directly to the DW_AT_comp_dir string attribute owned by | |
2139 | the obstack that owns the DIE. */ | |
2140 | const char *comp_dir; | |
2141 | ||
2142 | /* If we needed to build a new string for comp_dir, this is what | |
2143 | owns the storage. */ | |
2144 | std::string comp_dir_storage; | |
2145 | }; | |
2146 | ||
2147 | static file_and_directory find_file_and_directory (struct die_info *die, | |
2148 | struct dwarf2_cu *cu); | |
9291a0cd TT |
2149 | |
2150 | static char *file_full_name (int file, struct line_header *lh, | |
2151 | const char *comp_dir); | |
2152 | ||
43988095 JK |
2153 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
2154 | enum class rcuh_kind { COMPILE, TYPE }; | |
2155 | ||
d521ce57 | 2156 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
2157 | (struct comp_unit_head *header, |
2158 | struct dwarf2_section_info *section, | |
d521ce57 | 2159 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 2160 | rcuh_kind section_kind); |
36586728 | 2161 | |
fd820528 | 2162 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
2163 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
2164 | int use_existing_cu, int keep, | |
3019eac3 DE |
2165 | die_reader_func_ftype *die_reader_func, void *data); |
2166 | ||
dee91e82 DE |
2167 | static void init_cutu_and_read_dies_simple |
2168 | (struct dwarf2_per_cu_data *this_cu, | |
2169 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 2170 | |
673bfd45 | 2171 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2172 | |
3019eac3 DE |
2173 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2174 | ||
57d63ce2 DE |
2175 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
2176 | (struct dwp_file *dwp_file, const char *comp_dir, | |
2177 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
2178 | |
2179 | static struct dwp_file *get_dwp_file (void); | |
2180 | ||
3019eac3 | 2181 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2182 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2183 | |
2184 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2185 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2186 | |
89e63ee4 DE |
2187 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2188 | ||
3019eac3 DE |
2189 | static void free_dwo_file_cleanup (void *); |
2190 | ||
95554aad TT |
2191 | static void process_cu_includes (void); |
2192 | ||
1b80a9fa | 2193 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2194 | |
2195 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2196 | \f |
2197 | /* Various complaints about symbol reading that don't abort the process. */ | |
2198 | ||
2199 | static void | |
2200 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2201 | { | |
2202 | complaint (&symfile_complaints, | |
2203 | _("statement list doesn't fit in .debug_line section")); | |
2204 | } | |
2205 | ||
2206 | static void | |
2207 | dwarf2_debug_line_missing_file_complaint (void) | |
2208 | { | |
2209 | complaint (&symfile_complaints, | |
2210 | _(".debug_line section has line data without a file")); | |
2211 | } | |
2212 | ||
2213 | static void | |
2214 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2215 | { | |
2216 | complaint (&symfile_complaints, | |
2217 | _(".debug_line section has line " | |
2218 | "program sequence without an end")); | |
2219 | } | |
2220 | ||
2221 | static void | |
2222 | dwarf2_complex_location_expr_complaint (void) | |
2223 | { | |
2224 | complaint (&symfile_complaints, _("location expression too complex")); | |
2225 | } | |
2226 | ||
2227 | static void | |
2228 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2229 | int arg3) | |
2230 | { | |
2231 | complaint (&symfile_complaints, | |
2232 | _("const value length mismatch for '%s', got %d, expected %d"), | |
2233 | arg1, arg2, arg3); | |
2234 | } | |
2235 | ||
2236 | static void | |
2237 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2238 | { | |
2239 | complaint (&symfile_complaints, | |
2240 | _("debug info runs off end of %s section" | |
2241 | " [in module %s]"), | |
a32a8923 DE |
2242 | get_section_name (section), |
2243 | get_section_file_name (section)); | |
4390d890 | 2244 | } |
1b80a9fa | 2245 | |
4390d890 DE |
2246 | static void |
2247 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2248 | { | |
2249 | complaint (&symfile_complaints, | |
2250 | _("macro debug info contains a " | |
2251 | "malformed macro definition:\n`%s'"), | |
2252 | arg1); | |
2253 | } | |
2254 | ||
2255 | static void | |
2256 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2257 | { | |
2258 | complaint (&symfile_complaints, | |
2259 | _("invalid attribute class or form for '%s' in '%s'"), | |
2260 | arg1, arg2); | |
2261 | } | |
527f3840 JK |
2262 | |
2263 | /* Hash function for line_header_hash. */ | |
2264 | ||
2265 | static hashval_t | |
2266 | line_header_hash (const struct line_header *ofs) | |
2267 | { | |
9c541725 | 2268 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2269 | } |
2270 | ||
2271 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2272 | ||
2273 | static hashval_t | |
2274 | line_header_hash_voidp (const void *item) | |
2275 | { | |
9a3c8263 | 2276 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2277 | |
2278 | return line_header_hash (ofs); | |
2279 | } | |
2280 | ||
2281 | /* Equality function for line_header_hash. */ | |
2282 | ||
2283 | static int | |
2284 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2285 | { | |
9a3c8263 SM |
2286 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2287 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2288 | |
9c541725 | 2289 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2290 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2291 | } | |
2292 | ||
4390d890 | 2293 | \f |
9291a0cd | 2294 | |
31aa7e4e JB |
2295 | /* Read the given attribute value as an address, taking the attribute's |
2296 | form into account. */ | |
2297 | ||
2298 | static CORE_ADDR | |
2299 | attr_value_as_address (struct attribute *attr) | |
2300 | { | |
2301 | CORE_ADDR addr; | |
2302 | ||
2303 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2304 | { | |
2305 | /* Aside from a few clearly defined exceptions, attributes that | |
2306 | contain an address must always be in DW_FORM_addr form. | |
2307 | Unfortunately, some compilers happen to be violating this | |
2308 | requirement by encoding addresses using other forms, such | |
2309 | as DW_FORM_data4 for example. For those broken compilers, | |
2310 | we try to do our best, without any guarantee of success, | |
2311 | to interpret the address correctly. It would also be nice | |
2312 | to generate a complaint, but that would require us to maintain | |
2313 | a list of legitimate cases where a non-address form is allowed, | |
2314 | as well as update callers to pass in at least the CU's DWARF | |
2315 | version. This is more overhead than what we're willing to | |
2316 | expand for a pretty rare case. */ | |
2317 | addr = DW_UNSND (attr); | |
2318 | } | |
2319 | else | |
2320 | addr = DW_ADDR (attr); | |
2321 | ||
2322 | return addr; | |
2323 | } | |
2324 | ||
9291a0cd | 2325 | /* The suffix for an index file. */ |
437afbb8 JK |
2326 | #define INDEX4_SUFFIX ".gdb-index" |
2327 | #define INDEX5_SUFFIX ".debug_names" | |
2328 | #define DEBUG_STR_SUFFIX ".debug_str" | |
9291a0cd | 2329 | |
330cdd98 PA |
2330 | /* See declaration. */ |
2331 | ||
2332 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2333 | const dwarf2_debug_sections *names) | |
2334 | : objfile (objfile_) | |
2335 | { | |
2336 | if (names == NULL) | |
2337 | names = &dwarf2_elf_names; | |
2338 | ||
2339 | bfd *obfd = objfile->obfd; | |
2340 | ||
2341 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2342 | locate_sections (obfd, sec, *names); | |
2343 | } | |
2344 | ||
2345 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
2346 | { | |
2347 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2348 | free_cached_comp_units (); | |
2349 | ||
2350 | if (quick_file_names_table) | |
2351 | htab_delete (quick_file_names_table); | |
2352 | ||
2353 | if (line_header_hash) | |
2354 | htab_delete (line_header_hash); | |
2355 | ||
2356 | /* Everything else should be on the objfile obstack. */ | |
2357 | } | |
2358 | ||
2359 | /* See declaration. */ | |
2360 | ||
2361 | void | |
2362 | dwarf2_per_objfile::free_cached_comp_units () | |
2363 | { | |
2364 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2365 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2366 | while (per_cu != NULL) | |
2367 | { | |
2368 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2369 | ||
2370 | free_heap_comp_unit (per_cu->cu); | |
2371 | *last_chain = next_cu; | |
2372 | per_cu = next_cu; | |
2373 | } | |
2374 | } | |
2375 | ||
c906108c | 2376 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2377 | information and return true if we have enough to do something. |
2378 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2379 | ELF names are used. */ | |
c906108c SS |
2380 | |
2381 | int | |
251d32d9 TG |
2382 | dwarf2_has_info (struct objfile *objfile, |
2383 | const struct dwarf2_debug_sections *names) | |
c906108c | 2384 | { |
97cbe998 SDJ |
2385 | if (objfile->flags & OBJF_READNEVER) |
2386 | return 0; | |
2387 | ||
9a3c8263 SM |
2388 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
2389 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
be391dca TT |
2390 | if (!dwarf2_per_objfile) |
2391 | { | |
2392 | /* Initialize per-objfile state. */ | |
2393 | struct dwarf2_per_objfile *data | |
8d749320 | 2394 | = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_objfile); |
9a619af0 | 2395 | |
330cdd98 PA |
2396 | dwarf2_per_objfile = new (data) struct dwarf2_per_objfile (objfile, names); |
2397 | set_objfile_data (objfile, dwarf2_objfile_data_key, dwarf2_per_objfile); | |
be391dca | 2398 | } |
73869dc2 | 2399 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2400 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2401 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2402 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2403 | } |
2404 | ||
2405 | /* Return the containing section of virtual section SECTION. */ | |
2406 | ||
2407 | static struct dwarf2_section_info * | |
2408 | get_containing_section (const struct dwarf2_section_info *section) | |
2409 | { | |
2410 | gdb_assert (section->is_virtual); | |
2411 | return section->s.containing_section; | |
c906108c SS |
2412 | } |
2413 | ||
a32a8923 DE |
2414 | /* Return the bfd owner of SECTION. */ |
2415 | ||
2416 | static struct bfd * | |
2417 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2418 | { | |
73869dc2 DE |
2419 | if (section->is_virtual) |
2420 | { | |
2421 | section = get_containing_section (section); | |
2422 | gdb_assert (!section->is_virtual); | |
2423 | } | |
049412e3 | 2424 | return section->s.section->owner; |
a32a8923 DE |
2425 | } |
2426 | ||
2427 | /* Return the bfd section of SECTION. | |
2428 | Returns NULL if the section is not present. */ | |
2429 | ||
2430 | static asection * | |
2431 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2432 | { | |
73869dc2 DE |
2433 | if (section->is_virtual) |
2434 | { | |
2435 | section = get_containing_section (section); | |
2436 | gdb_assert (!section->is_virtual); | |
2437 | } | |
049412e3 | 2438 | return section->s.section; |
a32a8923 DE |
2439 | } |
2440 | ||
2441 | /* Return the name of SECTION. */ | |
2442 | ||
2443 | static const char * | |
2444 | get_section_name (const struct dwarf2_section_info *section) | |
2445 | { | |
2446 | asection *sectp = get_section_bfd_section (section); | |
2447 | ||
2448 | gdb_assert (sectp != NULL); | |
2449 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2450 | } | |
2451 | ||
2452 | /* Return the name of the file SECTION is in. */ | |
2453 | ||
2454 | static const char * | |
2455 | get_section_file_name (const struct dwarf2_section_info *section) | |
2456 | { | |
2457 | bfd *abfd = get_section_bfd_owner (section); | |
2458 | ||
2459 | return bfd_get_filename (abfd); | |
2460 | } | |
2461 | ||
2462 | /* Return the id of SECTION. | |
2463 | Returns 0 if SECTION doesn't exist. */ | |
2464 | ||
2465 | static int | |
2466 | get_section_id (const struct dwarf2_section_info *section) | |
2467 | { | |
2468 | asection *sectp = get_section_bfd_section (section); | |
2469 | ||
2470 | if (sectp == NULL) | |
2471 | return 0; | |
2472 | return sectp->id; | |
2473 | } | |
2474 | ||
2475 | /* Return the flags of SECTION. | |
73869dc2 | 2476 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2477 | |
2478 | static int | |
2479 | get_section_flags (const struct dwarf2_section_info *section) | |
2480 | { | |
2481 | asection *sectp = get_section_bfd_section (section); | |
2482 | ||
2483 | gdb_assert (sectp != NULL); | |
2484 | return bfd_get_section_flags (sectp->owner, sectp); | |
2485 | } | |
2486 | ||
251d32d9 TG |
2487 | /* When loading sections, we look either for uncompressed section or for |
2488 | compressed section names. */ | |
233a11ab CS |
2489 | |
2490 | static int | |
251d32d9 TG |
2491 | section_is_p (const char *section_name, |
2492 | const struct dwarf2_section_names *names) | |
233a11ab | 2493 | { |
251d32d9 TG |
2494 | if (names->normal != NULL |
2495 | && strcmp (section_name, names->normal) == 0) | |
2496 | return 1; | |
2497 | if (names->compressed != NULL | |
2498 | && strcmp (section_name, names->compressed) == 0) | |
2499 | return 1; | |
2500 | return 0; | |
233a11ab CS |
2501 | } |
2502 | ||
330cdd98 | 2503 | /* See declaration. */ |
c906108c | 2504 | |
330cdd98 PA |
2505 | void |
2506 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2507 | const dwarf2_debug_sections &names) | |
c906108c | 2508 | { |
dc7650b8 | 2509 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2510 | |
dc7650b8 JK |
2511 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2512 | { | |
2513 | } | |
330cdd98 | 2514 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2515 | { |
330cdd98 PA |
2516 | this->info.s.section = sectp; |
2517 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2518 | } |
330cdd98 | 2519 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2520 | { |
330cdd98 PA |
2521 | this->abbrev.s.section = sectp; |
2522 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2523 | } |
330cdd98 | 2524 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2525 | { |
330cdd98 PA |
2526 | this->line.s.section = sectp; |
2527 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2528 | } |
330cdd98 | 2529 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2530 | { |
330cdd98 PA |
2531 | this->loc.s.section = sectp; |
2532 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2533 | } |
330cdd98 | 2534 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2535 | { |
330cdd98 PA |
2536 | this->loclists.s.section = sectp; |
2537 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2538 | } |
330cdd98 | 2539 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2540 | { |
330cdd98 PA |
2541 | this->macinfo.s.section = sectp; |
2542 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2543 | } |
330cdd98 | 2544 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2545 | { |
330cdd98 PA |
2546 | this->macro.s.section = sectp; |
2547 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2548 | } |
330cdd98 | 2549 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2550 | { |
330cdd98 PA |
2551 | this->str.s.section = sectp; |
2552 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2553 | } |
330cdd98 | 2554 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2555 | { |
330cdd98 PA |
2556 | this->line_str.s.section = sectp; |
2557 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2558 | } |
330cdd98 | 2559 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2560 | { |
330cdd98 PA |
2561 | this->addr.s.section = sectp; |
2562 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2563 | } |
330cdd98 | 2564 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2565 | { |
330cdd98 PA |
2566 | this->frame.s.section = sectp; |
2567 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2568 | } |
330cdd98 | 2569 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2570 | { |
330cdd98 PA |
2571 | this->eh_frame.s.section = sectp; |
2572 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2573 | } |
330cdd98 | 2574 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2575 | { |
330cdd98 PA |
2576 | this->ranges.s.section = sectp; |
2577 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2578 | } |
330cdd98 | 2579 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2580 | { |
330cdd98 PA |
2581 | this->rnglists.s.section = sectp; |
2582 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2583 | } |
330cdd98 | 2584 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2585 | { |
8b70b953 TT |
2586 | struct dwarf2_section_info type_section; |
2587 | ||
2588 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2589 | type_section.s.section = sectp; |
8b70b953 TT |
2590 | type_section.size = bfd_get_section_size (sectp); |
2591 | ||
330cdd98 | 2592 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2593 | &type_section); |
348e048f | 2594 | } |
330cdd98 | 2595 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2596 | { |
330cdd98 PA |
2597 | this->gdb_index.s.section = sectp; |
2598 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2599 | } |
927aa2e7 JK |
2600 | else if (section_is_p (sectp->name, &names.debug_names)) |
2601 | { | |
2602 | this->debug_names.s.section = sectp; | |
2603 | this->debug_names.size = bfd_get_section_size (sectp); | |
2604 | } | |
2605 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2606 | { | |
2607 | this->debug_aranges.s.section = sectp; | |
2608 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2609 | } | |
dce234bc | 2610 | |
b4e1fd61 | 2611 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2612 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2613 | this->has_section_at_zero = true; |
c906108c SS |
2614 | } |
2615 | ||
fceca515 DE |
2616 | /* A helper function that decides whether a section is empty, |
2617 | or not present. */ | |
9e0ac564 TT |
2618 | |
2619 | static int | |
19ac8c2e | 2620 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2621 | { |
73869dc2 DE |
2622 | if (section->is_virtual) |
2623 | return section->size == 0; | |
049412e3 | 2624 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2625 | } |
2626 | ||
3019eac3 DE |
2627 | /* Read the contents of the section INFO. |
2628 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2629 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2630 | of the DWO file. | |
dce234bc | 2631 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2632 | |
dce234bc PP |
2633 | static void |
2634 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2635 | { |
a32a8923 | 2636 | asection *sectp; |
3019eac3 | 2637 | bfd *abfd; |
dce234bc | 2638 | gdb_byte *buf, *retbuf; |
c906108c | 2639 | |
be391dca TT |
2640 | if (info->readin) |
2641 | return; | |
dce234bc | 2642 | info->buffer = NULL; |
be391dca | 2643 | info->readin = 1; |
188dd5d6 | 2644 | |
9e0ac564 | 2645 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2646 | return; |
c906108c | 2647 | |
a32a8923 | 2648 | sectp = get_section_bfd_section (info); |
3019eac3 | 2649 | |
73869dc2 DE |
2650 | /* If this is a virtual section we need to read in the real one first. */ |
2651 | if (info->is_virtual) | |
2652 | { | |
2653 | struct dwarf2_section_info *containing_section = | |
2654 | get_containing_section (info); | |
2655 | ||
2656 | gdb_assert (sectp != NULL); | |
2657 | if ((sectp->flags & SEC_RELOC) != 0) | |
2658 | { | |
2659 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2660 | " supported in section %s [in module %s]"), | |
2661 | get_section_name (info), get_section_file_name (info)); | |
2662 | } | |
2663 | dwarf2_read_section (objfile, containing_section); | |
2664 | /* Other code should have already caught virtual sections that don't | |
2665 | fit. */ | |
2666 | gdb_assert (info->virtual_offset + info->size | |
2667 | <= containing_section->size); | |
2668 | /* If the real section is empty or there was a problem reading the | |
2669 | section we shouldn't get here. */ | |
2670 | gdb_assert (containing_section->buffer != NULL); | |
2671 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2672 | return; | |
2673 | } | |
2674 | ||
4bf44c1c TT |
2675 | /* If the section has relocations, we must read it ourselves. |
2676 | Otherwise we attach it to the BFD. */ | |
2677 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2678 | { |
d521ce57 | 2679 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2680 | return; |
dce234bc | 2681 | } |
dce234bc | 2682 | |
224c3ddb | 2683 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2684 | info->buffer = buf; |
dce234bc PP |
2685 | |
2686 | /* When debugging .o files, we may need to apply relocations; see | |
2687 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2688 | We never compress sections in .o files, so we only need to | |
2689 | try this when the section is not compressed. */ | |
ac8035ab | 2690 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2691 | if (retbuf != NULL) |
2692 | { | |
2693 | info->buffer = retbuf; | |
2694 | return; | |
2695 | } | |
2696 | ||
a32a8923 DE |
2697 | abfd = get_section_bfd_owner (info); |
2698 | gdb_assert (abfd != NULL); | |
2699 | ||
dce234bc PP |
2700 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2701 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2702 | { |
2703 | error (_("Dwarf Error: Can't read DWARF data" | |
2704 | " in section %s [in module %s]"), | |
2705 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2706 | } | |
dce234bc PP |
2707 | } |
2708 | ||
9e0ac564 TT |
2709 | /* A helper function that returns the size of a section in a safe way. |
2710 | If you are positive that the section has been read before using the | |
2711 | size, then it is safe to refer to the dwarf2_section_info object's | |
2712 | "size" field directly. In other cases, you must call this | |
2713 | function, because for compressed sections the size field is not set | |
2714 | correctly until the section has been read. */ | |
2715 | ||
2716 | static bfd_size_type | |
2717 | dwarf2_section_size (struct objfile *objfile, | |
2718 | struct dwarf2_section_info *info) | |
2719 | { | |
2720 | if (!info->readin) | |
2721 | dwarf2_read_section (objfile, info); | |
2722 | return info->size; | |
2723 | } | |
2724 | ||
dce234bc | 2725 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2726 | SECTION_NAME. */ |
af34e669 | 2727 | |
dce234bc | 2728 | void |
3017a003 TG |
2729 | dwarf2_get_section_info (struct objfile *objfile, |
2730 | enum dwarf2_section_enum sect, | |
d521ce57 | 2731 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2732 | bfd_size_type *sizep) |
2733 | { | |
2734 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2735 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2736 | dwarf2_objfile_data_key); | |
dce234bc | 2737 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2738 | |
2739 | /* We may see an objfile without any DWARF, in which case we just | |
2740 | return nothing. */ | |
2741 | if (data == NULL) | |
2742 | { | |
2743 | *sectp = NULL; | |
2744 | *bufp = NULL; | |
2745 | *sizep = 0; | |
2746 | return; | |
2747 | } | |
3017a003 TG |
2748 | switch (sect) |
2749 | { | |
2750 | case DWARF2_DEBUG_FRAME: | |
2751 | info = &data->frame; | |
2752 | break; | |
2753 | case DWARF2_EH_FRAME: | |
2754 | info = &data->eh_frame; | |
2755 | break; | |
2756 | default: | |
2757 | gdb_assert_not_reached ("unexpected section"); | |
2758 | } | |
dce234bc | 2759 | |
9e0ac564 | 2760 | dwarf2_read_section (objfile, info); |
dce234bc | 2761 | |
a32a8923 | 2762 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2763 | *bufp = info->buffer; |
2764 | *sizep = info->size; | |
2765 | } | |
2766 | ||
36586728 TT |
2767 | /* A helper function to find the sections for a .dwz file. */ |
2768 | ||
2769 | static void | |
2770 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2771 | { | |
9a3c8263 | 2772 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2773 | |
2774 | /* Note that we only support the standard ELF names, because .dwz | |
2775 | is ELF-only (at the time of writing). */ | |
2776 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2777 | { | |
049412e3 | 2778 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2779 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2780 | } | |
2781 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2782 | { | |
049412e3 | 2783 | dwz_file->info.s.section = sectp; |
36586728 TT |
2784 | dwz_file->info.size = bfd_get_section_size (sectp); |
2785 | } | |
2786 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2787 | { | |
049412e3 | 2788 | dwz_file->str.s.section = sectp; |
36586728 TT |
2789 | dwz_file->str.size = bfd_get_section_size (sectp); |
2790 | } | |
2791 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2792 | { | |
049412e3 | 2793 | dwz_file->line.s.section = sectp; |
36586728 TT |
2794 | dwz_file->line.size = bfd_get_section_size (sectp); |
2795 | } | |
2796 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2797 | { | |
049412e3 | 2798 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2799 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2800 | } | |
2ec9a5e0 TT |
2801 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2802 | { | |
049412e3 | 2803 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2804 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2805 | } | |
927aa2e7 JK |
2806 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2807 | { | |
2808 | dwz_file->debug_names.s.section = sectp; | |
2809 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2810 | } | |
36586728 TT |
2811 | } |
2812 | ||
4db1a1dc TT |
2813 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2814 | there is no .gnu_debugaltlink section in the file. Error if there | |
2815 | is such a section but the file cannot be found. */ | |
36586728 TT |
2816 | |
2817 | static struct dwz_file * | |
2818 | dwarf2_get_dwz_file (void) | |
2819 | { | |
36586728 TT |
2820 | const char *filename; |
2821 | struct dwz_file *result; | |
acd13123 | 2822 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2823 | size_t buildid_len; |
2824 | bfd_byte *buildid; | |
36586728 TT |
2825 | |
2826 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2827 | return dwarf2_per_objfile->dwz_file; | |
2828 | ||
4db1a1dc | 2829 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2830 | gdb::unique_xmalloc_ptr<char> data |
2831 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2832 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2833 | if (data == NULL) |
2834 | { | |
2835 | if (bfd_get_error () == bfd_error_no_error) | |
2836 | return NULL; | |
2837 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2838 | bfd_errmsg (bfd_get_error ())); | |
2839 | } | |
791afaa2 TT |
2840 | |
2841 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2842 | |
acd13123 TT |
2843 | buildid_len = (size_t) buildid_len_arg; |
2844 | ||
791afaa2 | 2845 | filename = data.get (); |
d721ba37 PA |
2846 | |
2847 | std::string abs_storage; | |
36586728 TT |
2848 | if (!IS_ABSOLUTE_PATH (filename)) |
2849 | { | |
14278e1f TT |
2850 | gdb::unique_xmalloc_ptr<char> abs |
2851 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2852 | |
14278e1f | 2853 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2854 | filename = abs_storage.c_str (); |
36586728 TT |
2855 | } |
2856 | ||
dc294be5 TT |
2857 | /* First try the file name given in the section. If that doesn't |
2858 | work, try to use the build-id instead. */ | |
192b62ce | 2859 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2860 | if (dwz_bfd != NULL) |
36586728 | 2861 | { |
192b62ce TT |
2862 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2863 | dwz_bfd.release (); | |
36586728 TT |
2864 | } |
2865 | ||
dc294be5 TT |
2866 | if (dwz_bfd == NULL) |
2867 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2868 | ||
2869 | if (dwz_bfd == NULL) | |
2870 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2871 | objfile_name (dwarf2_per_objfile->objfile)); | |
2872 | ||
36586728 TT |
2873 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2874 | struct dwz_file); | |
192b62ce | 2875 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 2876 | |
192b62ce | 2877 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 | 2878 | |
192b62ce | 2879 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 2880 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2881 | return result; |
2882 | } | |
9291a0cd | 2883 | \f |
7b9f3c50 DE |
2884 | /* DWARF quick_symbols_functions support. */ |
2885 | ||
2886 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2887 | unique line tables, so we maintain a separate table of all .debug_line | |
2888 | derived entries to support the sharing. | |
2889 | All the quick functions need is the list of file names. We discard the | |
2890 | line_header when we're done and don't need to record it here. */ | |
2891 | struct quick_file_names | |
2892 | { | |
094b34ac DE |
2893 | /* The data used to construct the hash key. */ |
2894 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2895 | |
2896 | /* The number of entries in file_names, real_names. */ | |
2897 | unsigned int num_file_names; | |
2898 | ||
2899 | /* The file names from the line table, after being run through | |
2900 | file_full_name. */ | |
2901 | const char **file_names; | |
2902 | ||
2903 | /* The file names from the line table after being run through | |
2904 | gdb_realpath. These are computed lazily. */ | |
2905 | const char **real_names; | |
2906 | }; | |
2907 | ||
2908 | /* When using the index (and thus not using psymtabs), each CU has an | |
2909 | object of this type. This is used to hold information needed by | |
2910 | the various "quick" methods. */ | |
2911 | struct dwarf2_per_cu_quick_data | |
2912 | { | |
2913 | /* The file table. This can be NULL if there was no file table | |
2914 | or it's currently not read in. | |
2915 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2916 | struct quick_file_names *file_names; | |
2917 | ||
2918 | /* The corresponding symbol table. This is NULL if symbols for this | |
2919 | CU have not yet been read. */ | |
43f3e411 | 2920 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2921 | |
2922 | /* A temporary mark bit used when iterating over all CUs in | |
2923 | expand_symtabs_matching. */ | |
2924 | unsigned int mark : 1; | |
2925 | ||
2926 | /* True if we've tried to read the file table and found there isn't one. | |
2927 | There will be no point in trying to read it again next time. */ | |
2928 | unsigned int no_file_data : 1; | |
2929 | }; | |
2930 | ||
094b34ac DE |
2931 | /* Utility hash function for a stmt_list_hash. */ |
2932 | ||
2933 | static hashval_t | |
2934 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2935 | { | |
2936 | hashval_t v = 0; | |
2937 | ||
2938 | if (stmt_list_hash->dwo_unit != NULL) | |
2939 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2940 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2941 | return v; |
2942 | } | |
2943 | ||
2944 | /* Utility equality function for a stmt_list_hash. */ | |
2945 | ||
2946 | static int | |
2947 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2948 | const struct stmt_list_hash *rhs) | |
2949 | { | |
2950 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2951 | return 0; | |
2952 | if (lhs->dwo_unit != NULL | |
2953 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2954 | return 0; | |
2955 | ||
9c541725 | 2956 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2957 | } |
2958 | ||
7b9f3c50 DE |
2959 | /* Hash function for a quick_file_names. */ |
2960 | ||
2961 | static hashval_t | |
2962 | hash_file_name_entry (const void *e) | |
2963 | { | |
9a3c8263 SM |
2964 | const struct quick_file_names *file_data |
2965 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2966 | |
094b34ac | 2967 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2968 | } |
2969 | ||
2970 | /* Equality function for a quick_file_names. */ | |
2971 | ||
2972 | static int | |
2973 | eq_file_name_entry (const void *a, const void *b) | |
2974 | { | |
9a3c8263 SM |
2975 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2976 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2977 | |
094b34ac | 2978 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2979 | } |
2980 | ||
2981 | /* Delete function for a quick_file_names. */ | |
2982 | ||
2983 | static void | |
2984 | delete_file_name_entry (void *e) | |
2985 | { | |
9a3c8263 | 2986 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2987 | int i; |
2988 | ||
2989 | for (i = 0; i < file_data->num_file_names; ++i) | |
2990 | { | |
2991 | xfree ((void*) file_data->file_names[i]); | |
2992 | if (file_data->real_names) | |
2993 | xfree ((void*) file_data->real_names[i]); | |
2994 | } | |
2995 | ||
2996 | /* The space for the struct itself lives on objfile_obstack, | |
2997 | so we don't free it here. */ | |
2998 | } | |
2999 | ||
3000 | /* Create a quick_file_names hash table. */ | |
3001 | ||
3002 | static htab_t | |
3003 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
3004 | { | |
3005 | return htab_create_alloc (nr_initial_entries, | |
3006 | hash_file_name_entry, eq_file_name_entry, | |
3007 | delete_file_name_entry, xcalloc, xfree); | |
3008 | } | |
9291a0cd | 3009 | |
918dd910 JK |
3010 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
3011 | have to be created afterwards. You should call age_cached_comp_units after | |
3012 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
3013 | ||
3014 | static void | |
3015 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
3016 | { | |
3019eac3 | 3017 | if (per_cu->is_debug_types) |
e5fe5e75 | 3018 | load_full_type_unit (per_cu); |
918dd910 | 3019 | else |
95554aad | 3020 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 3021 | |
cc12ce38 DE |
3022 | if (per_cu->cu == NULL) |
3023 | return; /* Dummy CU. */ | |
2dc860c0 DE |
3024 | |
3025 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
3026 | } |
3027 | ||
a0f42c21 | 3028 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 3029 | |
9291a0cd | 3030 | static void |
a0f42c21 | 3031 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
3032 | { |
3033 | struct cleanup *back_to; | |
3034 | ||
f4dc4d17 DE |
3035 | /* Skip type_unit_groups, reading the type units they contain |
3036 | is handled elsewhere. */ | |
3037 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
3038 | return; | |
3039 | ||
9291a0cd TT |
3040 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
3041 | ||
95554aad | 3042 | if (dwarf2_per_objfile->using_index |
43f3e411 | 3043 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
3044 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
3045 | { | |
3046 | queue_comp_unit (per_cu, language_minimal); | |
3047 | load_cu (per_cu); | |
89e63ee4 DE |
3048 | |
3049 | /* If we just loaded a CU from a DWO, and we're working with an index | |
3050 | that may badly handle TUs, load all the TUs in that DWO as well. | |
3051 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
3052 | if (!per_cu->is_debug_types | |
cc12ce38 | 3053 | && per_cu->cu != NULL |
89e63ee4 DE |
3054 | && per_cu->cu->dwo_unit != NULL |
3055 | && dwarf2_per_objfile->index_table != NULL | |
3056 | && dwarf2_per_objfile->index_table->version <= 7 | |
3057 | /* DWP files aren't supported yet. */ | |
3058 | && get_dwp_file () == NULL) | |
3059 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 3060 | } |
9291a0cd | 3061 | |
a0f42c21 | 3062 | process_queue (); |
9291a0cd TT |
3063 | |
3064 | /* Age the cache, releasing compilation units that have not | |
3065 | been used recently. */ | |
3066 | age_cached_comp_units (); | |
3067 | ||
3068 | do_cleanups (back_to); | |
3069 | } | |
3070 | ||
3071 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
3072 | the objfile from which this CU came. Returns the resulting symbol | |
3073 | table. */ | |
2fdf6df6 | 3074 | |
43f3e411 | 3075 | static struct compunit_symtab * |
a0f42c21 | 3076 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3077 | { |
95554aad | 3078 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 3079 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3080 | { |
3081 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
c83dd867 | 3082 | scoped_restore decrementer = increment_reading_symtab (); |
a0f42c21 | 3083 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 3084 | process_cu_includes (); |
9291a0cd TT |
3085 | do_cleanups (back_to); |
3086 | } | |
f194fefb | 3087 | |
43f3e411 | 3088 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
3089 | } |
3090 | ||
8832e7e3 | 3091 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
3092 | |
3093 | This is intended for loops like: | |
3094 | ||
3095 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3096 | + dwarf2_per_objfile->n_type_units); ++i) | |
3097 | { | |
8832e7e3 | 3098 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
3099 | |
3100 | ...; | |
3101 | } | |
3102 | */ | |
2fdf6df6 | 3103 | |
1fd400ff | 3104 | static struct dwarf2_per_cu_data * |
8832e7e3 | 3105 | dw2_get_cutu (int index) |
1fd400ff TT |
3106 | { |
3107 | if (index >= dwarf2_per_objfile->n_comp_units) | |
3108 | { | |
f4dc4d17 | 3109 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
3110 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
3111 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
3112 | } |
3113 | ||
3114 | return dwarf2_per_objfile->all_comp_units[index]; | |
3115 | } | |
3116 | ||
8832e7e3 DE |
3117 | /* Return the CU given its index. |
3118 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
3119 | refers to a CU. */ | |
f4dc4d17 DE |
3120 | |
3121 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 3122 | dw2_get_cu (int index) |
f4dc4d17 | 3123 | { |
8832e7e3 | 3124 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 3125 | |
1fd400ff TT |
3126 | return dwarf2_per_objfile->all_comp_units[index]; |
3127 | } | |
3128 | ||
4b514bc8 JK |
3129 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
3130 | objfile_obstack, and constructed with the specified field | |
3131 | values. */ | |
3132 | ||
3133 | static dwarf2_per_cu_data * | |
3134 | create_cu_from_index_list (struct objfile *objfile, | |
3135 | struct dwarf2_section_info *section, | |
3136 | int is_dwz, | |
3137 | sect_offset sect_off, ULONGEST length) | |
3138 | { | |
3139 | dwarf2_per_cu_data *the_cu | |
3140 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3141 | struct dwarf2_per_cu_data); | |
3142 | the_cu->sect_off = sect_off; | |
3143 | the_cu->length = length; | |
3144 | the_cu->objfile = objfile; | |
3145 | the_cu->section = section; | |
3146 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3147 | struct dwarf2_per_cu_quick_data); | |
3148 | the_cu->is_dwz = is_dwz; | |
3149 | return the_cu; | |
3150 | } | |
3151 | ||
2ec9a5e0 TT |
3152 | /* A helper for create_cus_from_index that handles a given list of |
3153 | CUs. */ | |
2fdf6df6 | 3154 | |
74a0d9f6 | 3155 | static void |
2ec9a5e0 TT |
3156 | create_cus_from_index_list (struct objfile *objfile, |
3157 | const gdb_byte *cu_list, offset_type n_elements, | |
3158 | struct dwarf2_section_info *section, | |
3159 | int is_dwz, | |
3160 | int base_offset) | |
9291a0cd TT |
3161 | { |
3162 | offset_type i; | |
9291a0cd | 3163 | |
2ec9a5e0 | 3164 | for (i = 0; i < n_elements; i += 2) |
9291a0cd | 3165 | { |
74a0d9f6 | 3166 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3167 | |
3168 | sect_offset sect_off | |
3169 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3170 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3171 | cu_list += 2 * 8; |
3172 | ||
4b514bc8 JK |
3173 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] |
3174 | = create_cu_from_index_list (objfile, section, is_dwz, sect_off, length); | |
9291a0cd | 3175 | } |
9291a0cd TT |
3176 | } |
3177 | ||
2ec9a5e0 | 3178 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3179 | the CU objects for this objfile. */ |
2ec9a5e0 | 3180 | |
74a0d9f6 | 3181 | static void |
2ec9a5e0 TT |
3182 | create_cus_from_index (struct objfile *objfile, |
3183 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
3184 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3185 | { | |
3186 | struct dwz_file *dwz; | |
3187 | ||
3188 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
3189 | dwarf2_per_objfile->all_comp_units = |
3190 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
3191 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 3192 | |
74a0d9f6 JK |
3193 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
3194 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
3195 | |
3196 | if (dwz_elements == 0) | |
74a0d9f6 | 3197 | return; |
2ec9a5e0 TT |
3198 | |
3199 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
3200 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
3201 | cu_list_elements / 2); | |
2ec9a5e0 TT |
3202 | } |
3203 | ||
1fd400ff | 3204 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3205 | |
74a0d9f6 | 3206 | static void |
673bfd45 | 3207 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 3208 | struct dwarf2_section_info *section, |
673bfd45 DE |
3209 | const gdb_byte *bytes, |
3210 | offset_type elements) | |
1fd400ff TT |
3211 | { |
3212 | offset_type i; | |
673bfd45 | 3213 | htab_t sig_types_hash; |
1fd400ff | 3214 | |
6aa5f3a6 DE |
3215 | dwarf2_per_objfile->n_type_units |
3216 | = dwarf2_per_objfile->n_allocated_type_units | |
3217 | = elements / 3; | |
8d749320 SM |
3218 | dwarf2_per_objfile->all_type_units = |
3219 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3220 | |
673bfd45 | 3221 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
3222 | |
3223 | for (i = 0; i < elements; i += 3) | |
3224 | { | |
52dc124a | 3225 | struct signatured_type *sig_type; |
9c541725 | 3226 | ULONGEST signature; |
1fd400ff | 3227 | void **slot; |
9c541725 | 3228 | cu_offset type_offset_in_tu; |
1fd400ff | 3229 | |
74a0d9f6 | 3230 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3231 | sect_offset sect_off |
3232 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3233 | type_offset_in_tu | |
3234 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3235 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3236 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3237 | bytes += 3 * 8; | |
3238 | ||
52dc124a | 3239 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3240 | struct signatured_type); |
52dc124a | 3241 | sig_type->signature = signature; |
9c541725 | 3242 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3243 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3244 | sig_type->per_cu.section = section; |
9c541725 | 3245 | sig_type->per_cu.sect_off = sect_off; |
52dc124a DE |
3246 | sig_type->per_cu.objfile = objfile; |
3247 | sig_type->per_cu.v.quick | |
1fd400ff TT |
3248 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3249 | struct dwarf2_per_cu_quick_data); | |
3250 | ||
52dc124a DE |
3251 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3252 | *slot = sig_type; | |
1fd400ff | 3253 | |
b4dd5633 | 3254 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
3255 | } |
3256 | ||
673bfd45 | 3257 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3258 | } |
3259 | ||
927aa2e7 JK |
3260 | /* Create the signatured type hash table from .debug_names. */ |
3261 | ||
3262 | static void | |
3263 | create_signatured_type_table_from_debug_names | |
3264 | (struct objfile *objfile, | |
3265 | const mapped_debug_names &map, | |
3266 | struct dwarf2_section_info *section, | |
3267 | struct dwarf2_section_info *abbrev_section) | |
3268 | { | |
3269 | dwarf2_read_section (objfile, section); | |
3270 | dwarf2_read_section (objfile, abbrev_section); | |
3271 | ||
3272 | dwarf2_per_objfile->n_type_units | |
3273 | = dwarf2_per_objfile->n_allocated_type_units | |
3274 | = map.tu_count; | |
3275 | dwarf2_per_objfile->all_type_units | |
3276 | = XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
3277 | ||
3278 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3279 | ||
3280 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3281 | { | |
3282 | struct signatured_type *sig_type; | |
3283 | ULONGEST signature; | |
3284 | void **slot; | |
3285 | cu_offset type_offset_in_tu; | |
3286 | ||
3287 | sect_offset sect_off | |
3288 | = (sect_offset) (extract_unsigned_integer | |
3289 | (map.tu_table_reordered + i * map.offset_size, | |
3290 | map.offset_size, | |
3291 | map.dwarf5_byte_order)); | |
3292 | ||
3293 | comp_unit_head cu_header; | |
3294 | read_and_check_comp_unit_head (&cu_header, section, abbrev_section, | |
3295 | section->buffer + to_underlying (sect_off), | |
3296 | rcuh_kind::TYPE); | |
3297 | ||
3298 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3299 | struct signatured_type); | |
3300 | sig_type->signature = cu_header.signature; | |
3301 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3302 | sig_type->per_cu.is_debug_types = 1; | |
3303 | sig_type->per_cu.section = section; | |
3304 | sig_type->per_cu.sect_off = sect_off; | |
3305 | sig_type->per_cu.objfile = objfile; | |
3306 | sig_type->per_cu.v.quick | |
3307 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3308 | struct dwarf2_per_cu_quick_data); | |
3309 | ||
3310 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3311 | *slot = sig_type; | |
3312 | ||
3313 | dwarf2_per_objfile->all_type_units[i] = sig_type; | |
3314 | } | |
3315 | ||
3316 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3317 | } | |
3318 | ||
9291a0cd TT |
3319 | /* Read the address map data from the mapped index, and use it to |
3320 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3321 | |
9291a0cd TT |
3322 | static void |
3323 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
3324 | { | |
3e29f34a | 3325 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3326 | const gdb_byte *iter, *end; |
9291a0cd | 3327 | struct addrmap *mutable_map; |
9291a0cd TT |
3328 | CORE_ADDR baseaddr; |
3329 | ||
8268c778 PA |
3330 | auto_obstack temp_obstack; |
3331 | ||
9291a0cd TT |
3332 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3333 | ||
3334 | iter = index->address_table; | |
3335 | end = iter + index->address_table_size; | |
3336 | ||
3337 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3338 | ||
3339 | while (iter < end) | |
3340 | { | |
3341 | ULONGEST hi, lo, cu_index; | |
3342 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3343 | iter += 8; | |
3344 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3345 | iter += 8; | |
3346 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3347 | iter += 4; | |
f652bce2 | 3348 | |
24a55014 | 3349 | if (lo > hi) |
f652bce2 | 3350 | { |
24a55014 DE |
3351 | complaint (&symfile_complaints, |
3352 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 3353 | hex_string (lo), hex_string (hi)); |
24a55014 | 3354 | continue; |
f652bce2 | 3355 | } |
24a55014 DE |
3356 | |
3357 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
3358 | { |
3359 | complaint (&symfile_complaints, | |
3360 | _(".gdb_index address table has invalid CU number %u"), | |
3361 | (unsigned) cu_index); | |
24a55014 | 3362 | continue; |
f652bce2 | 3363 | } |
24a55014 | 3364 | |
3e29f34a MR |
3365 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3366 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
3367 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
3368 | } |
3369 | ||
3370 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3371 | &objfile->objfile_obstack); | |
9291a0cd TT |
3372 | } |
3373 | ||
927aa2e7 JK |
3374 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3375 | populate the objfile's psymtabs_addrmap. */ | |
3376 | ||
3377 | static void | |
3378 | create_addrmap_from_aranges (struct objfile *objfile, | |
3379 | struct dwarf2_section_info *section) | |
3380 | { | |
3381 | bfd *abfd = objfile->obfd; | |
3382 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3383 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3384 | SECT_OFF_TEXT (objfile)); | |
3385 | ||
3386 | auto_obstack temp_obstack; | |
3387 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3388 | ||
3389 | std::unordered_map<sect_offset, | |
3390 | dwarf2_per_cu_data *, | |
3391 | gdb::hash_enum<sect_offset>> | |
3392 | debug_info_offset_to_per_cu; | |
3393 | for (int cui = 0; cui < dwarf2_per_objfile->n_comp_units; ++cui) | |
3394 | { | |
3395 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (cui); | |
3396 | const auto insertpair | |
3397 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3398 | if (!insertpair.second) | |
3399 | { | |
3400 | warning (_("Section .debug_aranges in %s has duplicate " | |
3401 | "debug_info_offset %u, ignoring .debug_aranges."), | |
3402 | objfile_name (objfile), to_underlying (per_cu->sect_off)); | |
3403 | return; | |
3404 | } | |
3405 | } | |
3406 | ||
3407 | dwarf2_read_section (objfile, section); | |
3408 | ||
3409 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3410 | ||
3411 | const gdb_byte *addr = section->buffer; | |
3412 | ||
3413 | while (addr < section->buffer + section->size) | |
3414 | { | |
3415 | const gdb_byte *const entry_addr = addr; | |
3416 | unsigned int bytes_read; | |
3417 | ||
3418 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3419 | &bytes_read); | |
3420 | addr += bytes_read; | |
3421 | ||
3422 | const gdb_byte *const entry_end = addr + entry_length; | |
3423 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3424 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3425 | if (addr + entry_length > section->buffer + section->size) | |
3426 | { | |
3427 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3428 | "length %s exceeds section length %s, " | |
3429 | "ignoring .debug_aranges."), | |
3430 | objfile_name (objfile), entry_addr - section->buffer, | |
3431 | plongest (bytes_read + entry_length), | |
3432 | pulongest (section->size)); | |
3433 | return; | |
3434 | } | |
3435 | ||
3436 | /* The version number. */ | |
3437 | const uint16_t version = read_2_bytes (abfd, addr); | |
3438 | addr += 2; | |
3439 | if (version != 2) | |
3440 | { | |
3441 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3442 | "has unsupported version %d, ignoring .debug_aranges."), | |
3443 | objfile_name (objfile), entry_addr - section->buffer, | |
3444 | version); | |
3445 | return; | |
3446 | } | |
3447 | ||
3448 | const uint64_t debug_info_offset | |
3449 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3450 | addr += offset_size; | |
3451 | const auto per_cu_it | |
3452 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3453 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3454 | { | |
3455 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3456 | "debug_info_offset %s does not exists, " | |
3457 | "ignoring .debug_aranges."), | |
3458 | objfile_name (objfile), entry_addr - section->buffer, | |
3459 | pulongest (debug_info_offset)); | |
3460 | return; | |
3461 | } | |
3462 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3463 | ||
3464 | const uint8_t address_size = *addr++; | |
3465 | if (address_size < 1 || address_size > 8) | |
3466 | { | |
3467 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3468 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3469 | objfile_name (objfile), entry_addr - section->buffer, | |
3470 | address_size); | |
3471 | return; | |
3472 | } | |
3473 | ||
3474 | const uint8_t segment_selector_size = *addr++; | |
3475 | if (segment_selector_size != 0) | |
3476 | { | |
3477 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3478 | "segment_selector_size %u is not supported, " | |
3479 | "ignoring .debug_aranges."), | |
3480 | objfile_name (objfile), entry_addr - section->buffer, | |
3481 | segment_selector_size); | |
3482 | return; | |
3483 | } | |
3484 | ||
3485 | /* Must pad to an alignment boundary that is twice the address | |
3486 | size. It is undocumented by the DWARF standard but GCC does | |
3487 | use it. */ | |
3488 | for (size_t padding = ((-(addr - section->buffer)) | |
3489 | & (2 * address_size - 1)); | |
3490 | padding > 0; padding--) | |
3491 | if (*addr++ != 0) | |
3492 | { | |
3493 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3494 | "padding is not zero, ignoring .debug_aranges."), | |
3495 | objfile_name (objfile), entry_addr - section->buffer); | |
3496 | return; | |
3497 | } | |
3498 | ||
3499 | for (;;) | |
3500 | { | |
3501 | if (addr + 2 * address_size > entry_end) | |
3502 | { | |
3503 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3504 | "address list is not properly terminated, " | |
3505 | "ignoring .debug_aranges."), | |
3506 | objfile_name (objfile), entry_addr - section->buffer); | |
3507 | return; | |
3508 | } | |
3509 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3510 | dwarf5_byte_order); | |
3511 | addr += address_size; | |
3512 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3513 | dwarf5_byte_order); | |
3514 | addr += address_size; | |
3515 | if (start == 0 && length == 0) | |
3516 | break; | |
3517 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3518 | { | |
3519 | /* Symbol was eliminated due to a COMDAT group. */ | |
3520 | continue; | |
3521 | } | |
3522 | ULONGEST end = start + length; | |
3523 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr); | |
3524 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr); | |
3525 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); | |
3526 | } | |
3527 | } | |
3528 | ||
3529 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3530 | &objfile->objfile_obstack); | |
3531 | } | |
3532 | ||
59d7bcaf JK |
3533 | /* The hash function for strings in the mapped index. This is the same as |
3534 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3535 | implementation. This is necessary because the hash function is tied to the | |
3536 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3537 | SYMBOL_HASH_NEXT. |
3538 | ||
3539 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3540 | |
9291a0cd | 3541 | static hashval_t |
559a7a62 | 3542 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3543 | { |
3544 | const unsigned char *str = (const unsigned char *) p; | |
3545 | hashval_t r = 0; | |
3546 | unsigned char c; | |
3547 | ||
3548 | while ((c = *str++) != 0) | |
559a7a62 JK |
3549 | { |
3550 | if (index_version >= 5) | |
3551 | c = tolower (c); | |
3552 | r = r * 67 + c - 113; | |
3553 | } | |
9291a0cd TT |
3554 | |
3555 | return r; | |
3556 | } | |
3557 | ||
3558 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3559 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3560 | constant pool and return true. If NAME cannot be found, return |
3561 | false. */ | |
2fdf6df6 | 3562 | |
109483d9 | 3563 | static bool |
9291a0cd TT |
3564 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3565 | offset_type **vec_out) | |
3566 | { | |
0cf03b49 | 3567 | offset_type hash; |
9291a0cd | 3568 | offset_type slot, step; |
559a7a62 | 3569 | int (*cmp) (const char *, const char *); |
9291a0cd | 3570 | |
791afaa2 | 3571 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3572 | if (current_language->la_language == language_cplus |
45280282 IB |
3573 | || current_language->la_language == language_fortran |
3574 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3575 | { |
3576 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3577 | not contain any. */ | |
a8719064 | 3578 | |
72998fb3 | 3579 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3580 | { |
109483d9 | 3581 | without_params = cp_remove_params (name); |
0cf03b49 | 3582 | |
72998fb3 | 3583 | if (without_params != NULL) |
791afaa2 | 3584 | name = without_params.get (); |
0cf03b49 JK |
3585 | } |
3586 | } | |
3587 | ||
559a7a62 | 3588 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3589 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3590 | simulate our NAME being searched is also lowercased. */ |
3591 | hash = mapped_index_string_hash ((index->version == 4 | |
3592 | && case_sensitivity == case_sensitive_off | |
3593 | ? 5 : index->version), | |
3594 | name); | |
3595 | ||
3876f04e DE |
3596 | slot = hash & (index->symbol_table_slots - 1); |
3597 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 3598 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3599 | |
3600 | for (;;) | |
3601 | { | |
3602 | /* Convert a slot number to an offset into the table. */ | |
3603 | offset_type i = 2 * slot; | |
3604 | const char *str; | |
3876f04e | 3605 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
109483d9 | 3606 | return false; |
9291a0cd | 3607 | |
3876f04e | 3608 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3609 | if (!cmp (name, str)) |
9291a0cd TT |
3610 | { |
3611 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3612 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
109483d9 | 3613 | return true; |
9291a0cd TT |
3614 | } |
3615 | ||
3876f04e | 3616 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3617 | } |
3618 | } | |
3619 | ||
2ec9a5e0 TT |
3620 | /* A helper function that reads the .gdb_index from SECTION and fills |
3621 | in MAP. FILENAME is the name of the file containing the section; | |
3622 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3623 | ok to use deprecated sections. | |
3624 | ||
3625 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3626 | out parameters that are filled in with information about the CU and | |
3627 | TU lists in the section. | |
3628 | ||
3629 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3630 | |
9291a0cd | 3631 | static int |
2ec9a5e0 TT |
3632 | read_index_from_section (struct objfile *objfile, |
3633 | const char *filename, | |
3634 | int deprecated_ok, | |
3635 | struct dwarf2_section_info *section, | |
3636 | struct mapped_index *map, | |
3637 | const gdb_byte **cu_list, | |
3638 | offset_type *cu_list_elements, | |
3639 | const gdb_byte **types_list, | |
3640 | offset_type *types_list_elements) | |
9291a0cd | 3641 | { |
948f8e3d | 3642 | const gdb_byte *addr; |
2ec9a5e0 | 3643 | offset_type version; |
b3b272e1 | 3644 | offset_type *metadata; |
1fd400ff | 3645 | int i; |
9291a0cd | 3646 | |
2ec9a5e0 | 3647 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3648 | return 0; |
82430852 JK |
3649 | |
3650 | /* Older elfutils strip versions could keep the section in the main | |
3651 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3652 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3653 | return 0; |
3654 | ||
2ec9a5e0 | 3655 | dwarf2_read_section (objfile, section); |
9291a0cd | 3656 | |
2ec9a5e0 | 3657 | addr = section->buffer; |
9291a0cd | 3658 | /* Version check. */ |
1fd400ff | 3659 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3660 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3661 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3662 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3663 | indices. */ |
831adc1f | 3664 | if (version < 4) |
481860b3 GB |
3665 | { |
3666 | static int warning_printed = 0; | |
3667 | if (!warning_printed) | |
3668 | { | |
3669 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3670 | filename); |
481860b3 GB |
3671 | warning_printed = 1; |
3672 | } | |
3673 | return 0; | |
3674 | } | |
3675 | /* Index version 4 uses a different hash function than index version | |
3676 | 5 and later. | |
3677 | ||
3678 | Versions earlier than 6 did not emit psymbols for inlined | |
3679 | functions. Using these files will cause GDB not to be able to | |
3680 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3681 | indices unless the user has done |
3682 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3683 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3684 | { |
3685 | static int warning_printed = 0; | |
3686 | if (!warning_printed) | |
3687 | { | |
e615022a DE |
3688 | warning (_("\ |
3689 | Skipping deprecated .gdb_index section in %s.\n\ | |
3690 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3691 | to use the section anyway."), | |
2ec9a5e0 | 3692 | filename); |
481860b3 GB |
3693 | warning_printed = 1; |
3694 | } | |
3695 | return 0; | |
3696 | } | |
796a7ff8 | 3697 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3698 | of the TU (for symbols coming from TUs), |
3699 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3700 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3701 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3702 | These are just performance bugs, and we can't distinguish gdb-generated | |
3703 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3704 | |
481860b3 | 3705 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3706 | longer backward compatible. */ |
796a7ff8 | 3707 | if (version > 8) |
594e8718 | 3708 | return 0; |
9291a0cd | 3709 | |
559a7a62 | 3710 | map->version = version; |
2ec9a5e0 | 3711 | map->total_size = section->size; |
9291a0cd TT |
3712 | |
3713 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3714 | |
3715 | i = 0; | |
2ec9a5e0 TT |
3716 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3717 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3718 | / 8); | |
1fd400ff TT |
3719 | ++i; |
3720 | ||
2ec9a5e0 TT |
3721 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3722 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3723 | - MAYBE_SWAP (metadata[i])) | |
3724 | / 8); | |
987d643c | 3725 | ++i; |
1fd400ff TT |
3726 | |
3727 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3728 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3729 | - MAYBE_SWAP (metadata[i])); | |
3730 | ++i; | |
3731 | ||
3876f04e DE |
3732 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3733 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3734 | - MAYBE_SWAP (metadata[i])) | |
3735 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3736 | ++i; |
9291a0cd | 3737 | |
f9d83a0b | 3738 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3739 | |
2ec9a5e0 TT |
3740 | return 1; |
3741 | } | |
3742 | ||
927aa2e7 | 3743 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3744 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3745 | ||
3746 | static int | |
3747 | dwarf2_read_index (struct objfile *objfile) | |
3748 | { | |
3749 | struct mapped_index local_map, *map; | |
3750 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3751 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3752 | struct dwz_file *dwz; |
2ec9a5e0 | 3753 | |
4262abfb | 3754 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3755 | use_deprecated_index_sections, |
3756 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3757 | &cu_list, &cu_list_elements, | |
3758 | &types_list, &types_list_elements)) | |
3759 | return 0; | |
3760 | ||
0fefef59 | 3761 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3762 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3763 | return 0; |
3764 | ||
2ec9a5e0 TT |
3765 | /* If there is a .dwz file, read it so we can get its CU list as |
3766 | well. */ | |
4db1a1dc TT |
3767 | dwz = dwarf2_get_dwz_file (); |
3768 | if (dwz != NULL) | |
2ec9a5e0 | 3769 | { |
2ec9a5e0 TT |
3770 | struct mapped_index dwz_map; |
3771 | const gdb_byte *dwz_types_ignore; | |
3772 | offset_type dwz_types_elements_ignore; | |
3773 | ||
3774 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3775 | 1, | |
3776 | &dwz->gdb_index, &dwz_map, | |
3777 | &dwz_list, &dwz_list_elements, | |
3778 | &dwz_types_ignore, | |
3779 | &dwz_types_elements_ignore)) | |
3780 | { | |
3781 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3782 | bfd_get_filename (dwz->dwz_bfd)); | |
3783 | return 0; | |
3784 | } | |
3785 | } | |
3786 | ||
74a0d9f6 JK |
3787 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3788 | dwz_list_elements); | |
1fd400ff | 3789 | |
8b70b953 TT |
3790 | if (types_list_elements) |
3791 | { | |
3792 | struct dwarf2_section_info *section; | |
3793 | ||
3794 | /* We can only handle a single .debug_types when we have an | |
3795 | index. */ | |
3796 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3797 | return 0; | |
3798 | ||
3799 | section = VEC_index (dwarf2_section_info_def, | |
3800 | dwarf2_per_objfile->types, 0); | |
3801 | ||
74a0d9f6 JK |
3802 | create_signatured_type_table_from_index (objfile, section, types_list, |
3803 | types_list_elements); | |
8b70b953 | 3804 | } |
9291a0cd | 3805 | |
2ec9a5e0 TT |
3806 | create_addrmap_from_index (objfile, &local_map); |
3807 | ||
8d749320 | 3808 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
3f563c84 | 3809 | map = new (map) mapped_index (); |
2ec9a5e0 | 3810 | *map = local_map; |
9291a0cd TT |
3811 | |
3812 | dwarf2_per_objfile->index_table = map; | |
3813 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3814 | dwarf2_per_objfile->quick_file_names_table = |
3815 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3816 | |
3817 | return 1; | |
3818 | } | |
3819 | ||
3820 | /* A helper for the "quick" functions which sets the global | |
3821 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3822 | |
9291a0cd TT |
3823 | static void |
3824 | dw2_setup (struct objfile *objfile) | |
3825 | { | |
9a3c8263 SM |
3826 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
3827 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
9291a0cd TT |
3828 | gdb_assert (dwarf2_per_objfile); |
3829 | } | |
3830 | ||
dee91e82 | 3831 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3832 | |
dee91e82 DE |
3833 | static void |
3834 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3835 | const gdb_byte *info_ptr, |
dee91e82 DE |
3836 | struct die_info *comp_unit_die, |
3837 | int has_children, | |
3838 | void *data) | |
9291a0cd | 3839 | { |
dee91e82 DE |
3840 | struct dwarf2_cu *cu = reader->cu; |
3841 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3842 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3843 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3844 | struct attribute *attr; |
dee91e82 | 3845 | int i; |
7b9f3c50 DE |
3846 | void **slot; |
3847 | struct quick_file_names *qfn; | |
9291a0cd | 3848 | |
0186c6a7 DE |
3849 | gdb_assert (! this_cu->is_debug_types); |
3850 | ||
07261596 TT |
3851 | /* Our callers never want to match partial units -- instead they |
3852 | will match the enclosing full CU. */ | |
3853 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3854 | { | |
3855 | this_cu->v.quick->no_file_data = 1; | |
3856 | return; | |
3857 | } | |
3858 | ||
0186c6a7 | 3859 | lh_cu = this_cu; |
7b9f3c50 | 3860 | slot = NULL; |
dee91e82 | 3861 | |
fff8551c | 3862 | line_header_up lh; |
9c541725 | 3863 | sect_offset line_offset {}; |
fff8551c | 3864 | |
dee91e82 | 3865 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3866 | if (attr) |
3867 | { | |
7b9f3c50 DE |
3868 | struct quick_file_names find_entry; |
3869 | ||
9c541725 | 3870 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3871 | |
3872 | /* We may have already read in this line header (TU line header sharing). | |
3873 | If we have we're done. */ | |
094b34ac | 3874 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3875 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3876 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3877 | &find_entry, INSERT); | |
3878 | if (*slot != NULL) | |
3879 | { | |
9a3c8263 | 3880 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3881 | return; |
7b9f3c50 DE |
3882 | } |
3883 | ||
3019eac3 | 3884 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3885 | } |
3886 | if (lh == NULL) | |
3887 | { | |
094b34ac | 3888 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3889 | return; |
9291a0cd TT |
3890 | } |
3891 | ||
8d749320 | 3892 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3893 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3894 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3895 | gdb_assert (slot != NULL); |
3896 | *slot = qfn; | |
9291a0cd | 3897 | |
d721ba37 | 3898 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3899 | |
fff8551c | 3900 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3901 | qfn->file_names = |
fff8551c PA |
3902 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3903 | for (i = 0; i < lh->file_names.size (); ++i) | |
3904 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3905 | qfn->real_names = NULL; |
9291a0cd | 3906 | |
094b34ac | 3907 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3908 | } |
3909 | ||
3910 | /* A helper for the "quick" functions which attempts to read the line | |
3911 | table for THIS_CU. */ | |
3912 | ||
3913 | static struct quick_file_names * | |
e4a48d9d | 3914 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3915 | { |
0186c6a7 DE |
3916 | /* This should never be called for TUs. */ |
3917 | gdb_assert (! this_cu->is_debug_types); | |
3918 | /* Nor type unit groups. */ | |
3919 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3920 | |
dee91e82 DE |
3921 | if (this_cu->v.quick->file_names != NULL) |
3922 | return this_cu->v.quick->file_names; | |
3923 | /* If we know there is no line data, no point in looking again. */ | |
3924 | if (this_cu->v.quick->no_file_data) | |
3925 | return NULL; | |
3926 | ||
0186c6a7 | 3927 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3928 | |
3929 | if (this_cu->v.quick->no_file_data) | |
3930 | return NULL; | |
3931 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3932 | } |
3933 | ||
3934 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3935 | real path for a given file name from the line table. */ |
2fdf6df6 | 3936 | |
9291a0cd | 3937 | static const char * |
7b9f3c50 DE |
3938 | dw2_get_real_path (struct objfile *objfile, |
3939 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3940 | { |
7b9f3c50 DE |
3941 | if (qfn->real_names == NULL) |
3942 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3943 | qfn->num_file_names, const char *); |
9291a0cd | 3944 | |
7b9f3c50 | 3945 | if (qfn->real_names[index] == NULL) |
14278e1f | 3946 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3947 | |
7b9f3c50 | 3948 | return qfn->real_names[index]; |
9291a0cd TT |
3949 | } |
3950 | ||
3951 | static struct symtab * | |
3952 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3953 | { | |
43f3e411 | 3954 | struct compunit_symtab *cust; |
9291a0cd | 3955 | int index; |
ae2de4f8 | 3956 | |
9291a0cd TT |
3957 | dw2_setup (objfile); |
3958 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3959 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3960 | if (cust == NULL) | |
3961 | return NULL; | |
3962 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3963 | } |
3964 | ||
7b9f3c50 DE |
3965 | /* Traversal function for dw2_forget_cached_source_info. */ |
3966 | ||
3967 | static int | |
3968 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3969 | { |
7b9f3c50 | 3970 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3971 | |
7b9f3c50 | 3972 | if (file_data->real_names) |
9291a0cd | 3973 | { |
7b9f3c50 | 3974 | int i; |
9291a0cd | 3975 | |
7b9f3c50 | 3976 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3977 | { |
7b9f3c50 DE |
3978 | xfree ((void*) file_data->real_names[i]); |
3979 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3980 | } |
3981 | } | |
7b9f3c50 DE |
3982 | |
3983 | return 1; | |
3984 | } | |
3985 | ||
3986 | static void | |
3987 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3988 | { | |
3989 | dw2_setup (objfile); | |
3990 | ||
3991 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3992 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3993 | } |
3994 | ||
f8eba3c6 TT |
3995 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3996 | the symtabs and calls the iterator. */ | |
3997 | ||
3998 | static int | |
3999 | dw2_map_expand_apply (struct objfile *objfile, | |
4000 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 4001 | const char *name, const char *real_path, |
14bc53a8 | 4002 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 4003 | { |
43f3e411 | 4004 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
4005 | |
4006 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 4007 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
4008 | return 0; |
4009 | ||
4010 | /* This may expand more than one symtab, and we want to iterate over | |
4011 | all of them. */ | |
a0f42c21 | 4012 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 4013 | |
14bc53a8 PA |
4014 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
4015 | last_made, callback); | |
f8eba3c6 TT |
4016 | } |
4017 | ||
4018 | /* Implementation of the map_symtabs_matching_filename method. */ | |
4019 | ||
14bc53a8 PA |
4020 | static bool |
4021 | dw2_map_symtabs_matching_filename | |
4022 | (struct objfile *objfile, const char *name, const char *real_path, | |
4023 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd TT |
4024 | { |
4025 | int i; | |
c011a4f4 | 4026 | const char *name_basename = lbasename (name); |
9291a0cd TT |
4027 | |
4028 | dw2_setup (objfile); | |
ae2de4f8 | 4029 | |
848e3e78 DE |
4030 | /* The rule is CUs specify all the files, including those used by |
4031 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 4032 | |
848e3e78 | 4033 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4034 | { |
4035 | int j; | |
8832e7e3 | 4036 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4037 | struct quick_file_names *file_data; |
9291a0cd | 4038 | |
3d7bb9d9 | 4039 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4040 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4041 | continue; |
4042 | ||
e4a48d9d | 4043 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4044 | if (file_data == NULL) |
9291a0cd TT |
4045 | continue; |
4046 | ||
7b9f3c50 | 4047 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4048 | { |
7b9f3c50 | 4049 | const char *this_name = file_data->file_names[j]; |
da235a7c | 4050 | const char *this_real_name; |
9291a0cd | 4051 | |
af529f8f | 4052 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 4053 | { |
f5b95b50 | 4054 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4055 | callback)) |
4056 | return true; | |
288e77a7 | 4057 | continue; |
4aac40c8 | 4058 | } |
9291a0cd | 4059 | |
c011a4f4 DE |
4060 | /* Before we invoke realpath, which can get expensive when many |
4061 | files are involved, do a quick comparison of the basenames. */ | |
4062 | if (! basenames_may_differ | |
4063 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
4064 | continue; | |
4065 | ||
da235a7c JK |
4066 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
4067 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 4068 | { |
da235a7c | 4069 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4070 | callback)) |
4071 | return true; | |
288e77a7 | 4072 | continue; |
da235a7c | 4073 | } |
9291a0cd | 4074 | |
da235a7c JK |
4075 | if (real_path != NULL) |
4076 | { | |
af529f8f JK |
4077 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
4078 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 4079 | if (this_real_name != NULL |
af529f8f | 4080 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 4081 | { |
f5b95b50 | 4082 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4083 | callback)) |
4084 | return true; | |
288e77a7 | 4085 | continue; |
9291a0cd TT |
4086 | } |
4087 | } | |
4088 | } | |
4089 | } | |
4090 | ||
14bc53a8 | 4091 | return false; |
9291a0cd TT |
4092 | } |
4093 | ||
da51c347 DE |
4094 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
4095 | ||
4096 | struct dw2_symtab_iterator | |
9291a0cd | 4097 | { |
da51c347 DE |
4098 | /* The internalized form of .gdb_index. */ |
4099 | struct mapped_index *index; | |
4100 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
4101 | int want_specific_block; | |
4102 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
4103 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
4104 | int block_index; | |
4105 | /* The kind of symbol we're looking for. */ | |
4106 | domain_enum domain; | |
4107 | /* The list of CUs from the index entry of the symbol, | |
4108 | or NULL if not found. */ | |
4109 | offset_type *vec; | |
4110 | /* The next element in VEC to look at. */ | |
4111 | int next; | |
4112 | /* The number of elements in VEC, or zero if there is no match. */ | |
4113 | int length; | |
8943b874 DE |
4114 | /* Have we seen a global version of the symbol? |
4115 | If so we can ignore all further global instances. | |
4116 | This is to work around gold/15646, inefficient gold-generated | |
4117 | indices. */ | |
4118 | int global_seen; | |
da51c347 | 4119 | }; |
9291a0cd | 4120 | |
da51c347 DE |
4121 | /* Initialize the index symtab iterator ITER. |
4122 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
4123 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 4124 | |
9291a0cd | 4125 | static void |
da51c347 DE |
4126 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
4127 | struct mapped_index *index, | |
4128 | int want_specific_block, | |
4129 | int block_index, | |
4130 | domain_enum domain, | |
4131 | const char *name) | |
4132 | { | |
4133 | iter->index = index; | |
4134 | iter->want_specific_block = want_specific_block; | |
4135 | iter->block_index = block_index; | |
4136 | iter->domain = domain; | |
4137 | iter->next = 0; | |
8943b874 | 4138 | iter->global_seen = 0; |
da51c347 DE |
4139 | |
4140 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
4141 | iter->length = MAYBE_SWAP (*iter->vec); | |
4142 | else | |
4143 | { | |
4144 | iter->vec = NULL; | |
4145 | iter->length = 0; | |
4146 | } | |
4147 | } | |
4148 | ||
4149 | /* Return the next matching CU or NULL if there are no more. */ | |
4150 | ||
4151 | static struct dwarf2_per_cu_data * | |
4152 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
4153 | { | |
4154 | for ( ; iter->next < iter->length; ++iter->next) | |
4155 | { | |
4156 | offset_type cu_index_and_attrs = | |
4157 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
4158 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 4159 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
4160 | int want_static = iter->block_index != GLOBAL_BLOCK; |
4161 | /* This value is only valid for index versions >= 7. */ | |
4162 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4163 | gdb_index_symbol_kind symbol_kind = | |
4164 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4165 | /* Only check the symbol attributes if they're present. | |
4166 | Indices prior to version 7 don't record them, | |
4167 | and indices >= 7 may elide them for certain symbols | |
4168 | (gold does this). */ | |
4169 | int attrs_valid = | |
4170 | (iter->index->version >= 7 | |
4171 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4172 | ||
3190f0c6 DE |
4173 | /* Don't crash on bad data. */ |
4174 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4175 | + dwarf2_per_objfile->n_type_units)) | |
4176 | { | |
4177 | complaint (&symfile_complaints, | |
4178 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
4179 | " [in module %s]"), |
4180 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4181 | continue; |
4182 | } | |
4183 | ||
8832e7e3 | 4184 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 4185 | |
da51c347 | 4186 | /* Skip if already read in. */ |
43f3e411 | 4187 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4188 | continue; |
4189 | ||
8943b874 DE |
4190 | /* Check static vs global. */ |
4191 | if (attrs_valid) | |
4192 | { | |
4193 | if (iter->want_specific_block | |
4194 | && want_static != is_static) | |
4195 | continue; | |
4196 | /* Work around gold/15646. */ | |
4197 | if (!is_static && iter->global_seen) | |
4198 | continue; | |
4199 | if (!is_static) | |
4200 | iter->global_seen = 1; | |
4201 | } | |
da51c347 DE |
4202 | |
4203 | /* Only check the symbol's kind if it has one. */ | |
4204 | if (attrs_valid) | |
4205 | { | |
4206 | switch (iter->domain) | |
4207 | { | |
4208 | case VAR_DOMAIN: | |
4209 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4210 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4211 | /* Some types are also in VAR_DOMAIN. */ | |
4212 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4213 | continue; | |
4214 | break; | |
4215 | case STRUCT_DOMAIN: | |
4216 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4217 | continue; | |
4218 | break; | |
4219 | case LABEL_DOMAIN: | |
4220 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4221 | continue; | |
4222 | break; | |
4223 | default: | |
4224 | break; | |
4225 | } | |
4226 | } | |
4227 | ||
4228 | ++iter->next; | |
4229 | return per_cu; | |
4230 | } | |
4231 | ||
4232 | return NULL; | |
4233 | } | |
4234 | ||
43f3e411 | 4235 | static struct compunit_symtab * |
da51c347 DE |
4236 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4237 | const char *name, domain_enum domain) | |
9291a0cd | 4238 | { |
43f3e411 | 4239 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
4240 | struct mapped_index *index; |
4241 | ||
9291a0cd TT |
4242 | dw2_setup (objfile); |
4243 | ||
b5ec771e PA |
4244 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4245 | ||
156942c7 DE |
4246 | index = dwarf2_per_objfile->index_table; |
4247 | ||
da51c347 | 4248 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 4249 | if (index) |
9291a0cd | 4250 | { |
da51c347 DE |
4251 | struct dw2_symtab_iterator iter; |
4252 | struct dwarf2_per_cu_data *per_cu; | |
4253 | ||
4254 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 4255 | |
da51c347 | 4256 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 4257 | { |
b2e2f908 | 4258 | struct symbol *sym, *with_opaque = NULL; |
43f3e411 DE |
4259 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
4260 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 4261 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 4262 | |
b2e2f908 DE |
4263 | sym = block_find_symbol (block, name, domain, |
4264 | block_find_non_opaque_type_preferred, | |
4265 | &with_opaque); | |
4266 | ||
da51c347 DE |
4267 | /* Some caution must be observed with overloaded functions |
4268 | and methods, since the index will not contain any overload | |
4269 | information (but NAME might contain it). */ | |
da51c347 | 4270 | |
b2e2f908 | 4271 | if (sym != NULL |
b5ec771e | 4272 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
b2e2f908 DE |
4273 | return stab; |
4274 | if (with_opaque != NULL | |
b5ec771e | 4275 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) |
b2e2f908 | 4276 | stab_best = stab; |
da51c347 DE |
4277 | |
4278 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
4279 | } |
4280 | } | |
9291a0cd | 4281 | |
da51c347 | 4282 | return stab_best; |
9291a0cd TT |
4283 | } |
4284 | ||
4285 | static void | |
4286 | dw2_print_stats (struct objfile *objfile) | |
4287 | { | |
e4a48d9d | 4288 | int i, total, count; |
9291a0cd TT |
4289 | |
4290 | dw2_setup (objfile); | |
e4a48d9d | 4291 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 4292 | count = 0; |
e4a48d9d | 4293 | for (i = 0; i < total; ++i) |
9291a0cd | 4294 | { |
8832e7e3 | 4295 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4296 | |
43f3e411 | 4297 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4298 | ++count; |
4299 | } | |
e4a48d9d | 4300 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4301 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4302 | } | |
4303 | ||
779bd270 DE |
4304 | /* This dumps minimal information about the index. |
4305 | It is called via "mt print objfiles". | |
4306 | One use is to verify .gdb_index has been loaded by the | |
4307 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4308 | ||
9291a0cd TT |
4309 | static void |
4310 | dw2_dump (struct objfile *objfile) | |
4311 | { | |
779bd270 DE |
4312 | dw2_setup (objfile); |
4313 | gdb_assert (dwarf2_per_objfile->using_index); | |
4314 | printf_filtered (".gdb_index:"); | |
4315 | if (dwarf2_per_objfile->index_table != NULL) | |
4316 | { | |
4317 | printf_filtered (" version %d\n", | |
4318 | dwarf2_per_objfile->index_table->version); | |
4319 | } | |
4320 | else | |
4321 | printf_filtered (" faked for \"readnow\"\n"); | |
4322 | printf_filtered ("\n"); | |
9291a0cd TT |
4323 | } |
4324 | ||
4325 | static void | |
3189cb12 DE |
4326 | dw2_relocate (struct objfile *objfile, |
4327 | const struct section_offsets *new_offsets, | |
4328 | const struct section_offsets *delta) | |
9291a0cd TT |
4329 | { |
4330 | /* There's nothing to relocate here. */ | |
4331 | } | |
4332 | ||
4333 | static void | |
4334 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4335 | const char *func_name) | |
4336 | { | |
da51c347 DE |
4337 | struct mapped_index *index; |
4338 | ||
4339 | dw2_setup (objfile); | |
4340 | ||
4341 | index = dwarf2_per_objfile->index_table; | |
4342 | ||
4343 | /* index is NULL if OBJF_READNOW. */ | |
4344 | if (index) | |
4345 | { | |
4346 | struct dw2_symtab_iterator iter; | |
4347 | struct dwarf2_per_cu_data *per_cu; | |
4348 | ||
4349 | /* Note: It doesn't matter what we pass for block_index here. */ | |
4350 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4351 | func_name); | |
4352 | ||
4353 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
4354 | dw2_instantiate_symtab (per_cu); | |
4355 | } | |
9291a0cd TT |
4356 | } |
4357 | ||
4358 | static void | |
4359 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4360 | { | |
4361 | int i; | |
4362 | ||
4363 | dw2_setup (objfile); | |
1fd400ff TT |
4364 | |
4365 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 4366 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4367 | { |
8832e7e3 | 4368 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4369 | |
a0f42c21 | 4370 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4371 | } |
4372 | } | |
4373 | ||
4374 | static void | |
652a8996 JK |
4375 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4376 | const char *fullname) | |
9291a0cd TT |
4377 | { |
4378 | int i; | |
4379 | ||
4380 | dw2_setup (objfile); | |
d4637a04 DE |
4381 | |
4382 | /* We don't need to consider type units here. | |
4383 | This is only called for examining code, e.g. expand_line_sal. | |
4384 | There can be an order of magnitude (or more) more type units | |
4385 | than comp units, and we avoid them if we can. */ | |
4386 | ||
4387 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
4388 | { |
4389 | int j; | |
8832e7e3 | 4390 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 4391 | struct quick_file_names *file_data; |
9291a0cd | 4392 | |
3d7bb9d9 | 4393 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4394 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4395 | continue; |
4396 | ||
e4a48d9d | 4397 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4398 | if (file_data == NULL) |
9291a0cd TT |
4399 | continue; |
4400 | ||
7b9f3c50 | 4401 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4402 | { |
652a8996 JK |
4403 | const char *this_fullname = file_data->file_names[j]; |
4404 | ||
4405 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4406 | { |
a0f42c21 | 4407 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4408 | break; |
4409 | } | |
4410 | } | |
4411 | } | |
4412 | } | |
4413 | ||
9291a0cd | 4414 | static void |
ade7ed9e | 4415 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4416 | const char * name, domain_enum domain, |
ade7ed9e | 4417 | int global, |
40658b94 PH |
4418 | int (*callback) (struct block *, |
4419 | struct symbol *, void *), | |
b5ec771e | 4420 | void *data, symbol_name_match_type match, |
2edb89d3 | 4421 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4422 | { |
40658b94 | 4423 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4424 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4425 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4426 | } |
4427 | ||
b5ec771e PA |
4428 | /* Symbol name matcher for .gdb_index names. |
4429 | ||
4430 | Symbol names in .gdb_index have a few particularities: | |
4431 | ||
4432 | - There's no indication of which is the language of each symbol. | |
4433 | ||
4434 | Since each language has its own symbol name matching algorithm, | |
4435 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4436 | each symbol against all languages. This would be a potential |
4437 | performance problem if it were not mitigated by the | |
4438 | mapped_index::name_components lookup table, which significantly | |
4439 | reduces the number of times we need to call into this matcher, | |
4440 | making it a non-issue. | |
b5ec771e PA |
4441 | |
4442 | - Symbol names in the index have no overload (parameter) | |
4443 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4444 | appear as "foo" in the index, for example. | |
4445 | ||
4446 | This means that the lookup names passed to the symbol name | |
4447 | matcher functions must have no parameter information either | |
4448 | because (e.g.) symbol search name "foo" does not match | |
4449 | lookup-name "foo(int)" [while swapping search name for lookup | |
4450 | name would match]. | |
4451 | */ | |
4452 | class gdb_index_symbol_name_matcher | |
4453 | { | |
4454 | public: | |
4455 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4456 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4457 | ||
4458 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4459 | Returns true if any matcher matches. */ | |
4460 | bool matches (const char *symbol_name); | |
4461 | ||
4462 | private: | |
4463 | /* A reference to the lookup name we're matching against. */ | |
4464 | const lookup_name_info &m_lookup_name; | |
4465 | ||
4466 | /* A vector holding all the different symbol name matchers, for all | |
4467 | languages. */ | |
4468 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4469 | }; | |
4470 | ||
4471 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4472 | (const lookup_name_info &lookup_name) | |
4473 | : m_lookup_name (lookup_name) | |
4474 | { | |
4475 | /* Prepare the vector of comparison functions upfront, to avoid | |
4476 | doing the same work for each symbol. Care is taken to avoid | |
4477 | matching with the same matcher more than once if/when multiple | |
4478 | languages use the same matcher function. */ | |
4479 | auto &matchers = m_symbol_name_matcher_funcs; | |
4480 | matchers.reserve (nr_languages); | |
4481 | ||
4482 | matchers.push_back (default_symbol_name_matcher); | |
4483 | ||
4484 | for (int i = 0; i < nr_languages; i++) | |
4485 | { | |
4486 | const language_defn *lang = language_def ((enum language) i); | |
4487 | if (lang->la_get_symbol_name_matcher != NULL) | |
4488 | { | |
4489 | symbol_name_matcher_ftype *name_matcher | |
4490 | = lang->la_get_symbol_name_matcher (m_lookup_name); | |
4491 | ||
4492 | /* Don't insert the same comparison routine more than once. | |
4493 | Note that we do this linear walk instead of a cheaper | |
4494 | sorted insert, or use a std::set or something like that, | |
4495 | because relative order of function addresses is not | |
4496 | stable. This is not a problem in practice because the | |
4497 | number of supported languages is low, and the cost here | |
4498 | is tiny compared to the number of searches we'll do | |
4499 | afterwards using this object. */ | |
4500 | if (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4501 | == matchers.end ()) | |
4502 | matchers.push_back (name_matcher); | |
4503 | } | |
4504 | } | |
4505 | } | |
4506 | ||
4507 | bool | |
4508 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4509 | { | |
4510 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4511 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4512 | return true; | |
4513 | ||
4514 | return false; | |
4515 | } | |
4516 | ||
e1ef7d7a PA |
4517 | /* Starting from a search name, return the string that finds the upper |
4518 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4519 | list. Returns the empty string to indicate that the upper bound is | |
4520 | the end of the list. */ | |
4521 | ||
4522 | static std::string | |
4523 | make_sort_after_prefix_name (const char *search_name) | |
4524 | { | |
4525 | /* When looking to complete "func", we find the upper bound of all | |
4526 | symbols that start with "func" by looking for where we'd insert | |
4527 | the closest string that would follow "func" in lexicographical | |
4528 | order. Usually, that's "func"-with-last-character-incremented, | |
4529 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4530 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4531 | Especially mind the 0xff character, which is a valid character in | |
4532 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4533 | rule out compilers allowing it in identifiers. Note that | |
4534 | conveniently, strcmp/strcasecmp are specified to compare | |
4535 | characters interpreted as unsigned char. So what we do is treat | |
4536 | the whole string as a base 256 number composed of a sequence of | |
4537 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4538 | to 0, and carries 1 to the following more-significant position. | |
4539 | If the very first character in SEARCH_NAME ends up incremented | |
4540 | and carries/overflows, then the upper bound is the end of the | |
4541 | list. The string after the empty string is also the empty | |
4542 | string. | |
4543 | ||
4544 | Some examples of this operation: | |
4545 | ||
4546 | SEARCH_NAME => "+1" RESULT | |
4547 | ||
4548 | "abc" => "abd" | |
4549 | "ab\xff" => "ac" | |
4550 | "\xff" "a" "\xff" => "\xff" "b" | |
4551 | "\xff" => "" | |
4552 | "\xff\xff" => "" | |
4553 | "" => "" | |
4554 | ||
4555 | Then, with these symbols for example: | |
4556 | ||
4557 | func | |
4558 | func1 | |
4559 | fund | |
4560 | ||
4561 | completing "func" looks for symbols between "func" and | |
4562 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4563 | which finds "func" and "func1", but not "fund". | |
4564 | ||
4565 | And with: | |
4566 | ||
4567 | funcÿ (Latin1 'ÿ' [0xff]) | |
4568 | funcÿ1 | |
4569 | fund | |
4570 | ||
4571 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4572 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4573 | ||
4574 | And with: | |
4575 | ||
4576 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4577 | ÿÿ1 | |
4578 | ||
4579 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4580 | the end of the list. | |
4581 | */ | |
4582 | std::string after = search_name; | |
4583 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4584 | after.pop_back (); | |
4585 | if (!after.empty ()) | |
4586 | after.back () = (unsigned char) after.back () + 1; | |
4587 | return after; | |
4588 | } | |
4589 | ||
5c58de74 | 4590 | /* See declaration. */ |
61d96d7e | 4591 | |
5c58de74 PA |
4592 | std::pair<std::vector<name_component>::const_iterator, |
4593 | std::vector<name_component>::const_iterator> | |
4594 | mapped_index::find_name_components_bounds | |
4595 | (const lookup_name_info &lookup_name_without_params) const | |
3f563c84 | 4596 | { |
5c58de74 PA |
4597 | auto *name_cmp |
4598 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4599 | |
4600 | const char *cplus | |
c62446b1 | 4601 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4602 | |
3f563c84 PA |
4603 | /* Comparison function object for lower_bound that matches against a |
4604 | given symbol name. */ | |
4605 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4606 | const char *name) | |
4607 | { | |
5c58de74 | 4608 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4609 | const char *elem_name = elem_qualified + elem.name_offset; |
4610 | return name_cmp (elem_name, name) < 0; | |
4611 | }; | |
4612 | ||
4613 | /* Comparison function object for upper_bound that matches against a | |
4614 | given symbol name. */ | |
4615 | auto lookup_compare_upper = [&] (const char *name, | |
4616 | const name_component &elem) | |
4617 | { | |
5c58de74 | 4618 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4619 | const char *elem_name = elem_qualified + elem.name_offset; |
4620 | return name_cmp (name, elem_name) < 0; | |
4621 | }; | |
4622 | ||
5c58de74 PA |
4623 | auto begin = this->name_components.begin (); |
4624 | auto end = this->name_components.end (); | |
3f563c84 PA |
4625 | |
4626 | /* Find the lower bound. */ | |
4627 | auto lower = [&] () | |
4628 | { | |
5c58de74 | 4629 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4630 | return begin; |
4631 | else | |
4632 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4633 | } (); | |
4634 | ||
4635 | /* Find the upper bound. */ | |
4636 | auto upper = [&] () | |
4637 | { | |
5c58de74 | 4638 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4639 | { |
e1ef7d7a PA |
4640 | /* In completion mode, we want UPPER to point past all |
4641 | symbols names that have the same prefix. I.e., with | |
4642 | these symbols, and completing "func": | |
4643 | ||
4644 | function << lower bound | |
4645 | function1 | |
4646 | other_function << upper bound | |
4647 | ||
4648 | We find the upper bound by looking for the insertion | |
4649 | point of "func"-with-last-character-incremented, | |
4650 | i.e. "fund". */ | |
4651 | std::string after = make_sort_after_prefix_name (cplus); | |
4652 | if (after.empty ()) | |
3f563c84 | 4653 | return end; |
e6b2f5ef PA |
4654 | return std::lower_bound (lower, end, after.c_str (), |
4655 | lookup_compare_lower); | |
3f563c84 PA |
4656 | } |
4657 | else | |
4658 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4659 | } (); | |
4660 | ||
5c58de74 PA |
4661 | return {lower, upper}; |
4662 | } | |
4663 | ||
4664 | /* See declaration. */ | |
4665 | ||
4666 | void | |
4667 | mapped_index::build_name_components () | |
4668 | { | |
4669 | if (!this->name_components.empty ()) | |
4670 | return; | |
4671 | ||
4672 | this->name_components_casing = case_sensitivity; | |
4673 | auto *name_cmp | |
4674 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4675 | ||
4676 | /* The code below only knows how to break apart components of C++ | |
4677 | symbol names (and other languages that use '::' as | |
4678 | namespace/module separator). If we add support for wild matching | |
4679 | to some language that uses some other operator (E.g., Ada, Go and | |
4680 | D use '.'), then we'll need to try splitting the symbol name | |
4681 | according to that language too. Note that Ada does support wild | |
4682 | matching, but doesn't currently support .gdb_index. */ | |
4683 | for (size_t iter = 0; iter < this->symbol_table_slots; ++iter) | |
4684 | { | |
4685 | offset_type idx = 2 * iter; | |
4686 | ||
4687 | if (this->symbol_table[idx] == 0 | |
4688 | && this->symbol_table[idx + 1] == 0) | |
4689 | continue; | |
4690 | ||
4691 | const char *name = this->symbol_name_at (idx); | |
4692 | ||
4693 | /* Add each name component to the name component table. */ | |
4694 | unsigned int previous_len = 0; | |
4695 | for (unsigned int current_len = cp_find_first_component (name); | |
4696 | name[current_len] != '\0'; | |
4697 | current_len += cp_find_first_component (name + current_len)) | |
4698 | { | |
4699 | gdb_assert (name[current_len] == ':'); | |
4700 | this->name_components.push_back ({previous_len, idx}); | |
4701 | /* Skip the '::'. */ | |
4702 | current_len += 2; | |
4703 | previous_len = current_len; | |
4704 | } | |
4705 | this->name_components.push_back ({previous_len, idx}); | |
4706 | } | |
4707 | ||
4708 | /* Sort name_components elements by name. */ | |
4709 | auto name_comp_compare = [&] (const name_component &left, | |
4710 | const name_component &right) | |
4711 | { | |
4712 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4713 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4714 | ||
4715 | const char *left_name = left_qualified + left.name_offset; | |
4716 | const char *right_name = right_qualified + right.name_offset; | |
4717 | ||
4718 | return name_cmp (left_name, right_name) < 0; | |
4719 | }; | |
4720 | ||
4721 | std::sort (this->name_components.begin (), | |
4722 | this->name_components.end (), | |
4723 | name_comp_compare); | |
4724 | } | |
4725 | ||
4726 | /* Helper for dw2_expand_symtabs_matching that works with a | |
4727 | mapped_index instead of the containing objfile. This is split to a | |
4728 | separate function in order to be able to unit test the | |
4729 | name_components matching using a mock mapped_index. For each | |
4730 | symbol name that matches, calls MATCH_CALLBACK, passing it the | |
4731 | symbol's index in the mapped_index symbol table. */ | |
4732 | ||
4733 | static void | |
4734 | dw2_expand_symtabs_matching_symbol | |
4735 | (mapped_index &index, | |
4736 | const lookup_name_info &lookup_name_in, | |
4737 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4738 | enum search_domain kind, | |
4739 | gdb::function_view<void (offset_type)> match_callback) | |
4740 | { | |
4741 | lookup_name_info lookup_name_without_params | |
4742 | = lookup_name_in.make_ignore_params (); | |
4743 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4744 | (lookup_name_without_params); | |
4745 | ||
4746 | /* Build the symbol name component sorted vector, if we haven't | |
4747 | yet. */ | |
4748 | index.build_name_components (); | |
4749 | ||
4750 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4751 | ||
3f563c84 PA |
4752 | /* Now for each symbol name in range, check to see if we have a name |
4753 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4754 | ||
4755 | /* The same symbol may appear more than once in the range though. | |
4756 | E.g., if we're looking for symbols that complete "w", and we have | |
4757 | a symbol named "w1::w2", we'll find the two name components for | |
4758 | that same symbol in the range. To be sure we only call the | |
4759 | callback once per symbol, we first collect the symbol name | |
4760 | indexes that matched in a temporary vector and ignore | |
4761 | duplicates. */ | |
4762 | std::vector<offset_type> matches; | |
5c58de74 | 4763 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4764 | |
5c58de74 | 4765 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4766 | { |
5c58de74 | 4767 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4768 | |
4769 | if (!lookup_name_matcher.matches (qualified) | |
4770 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4771 | continue; |
4772 | ||
5c58de74 | 4773 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4774 | } |
4775 | ||
4776 | std::sort (matches.begin (), matches.end ()); | |
4777 | ||
4778 | /* Finally call the callback, once per match. */ | |
4779 | ULONGEST prev = -1; | |
4780 | for (offset_type idx : matches) | |
4781 | { | |
4782 | if (prev != idx) | |
4783 | { | |
4784 | match_callback (idx); | |
4785 | prev = idx; | |
4786 | } | |
4787 | } | |
4788 | ||
4789 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4790 | (offset_type)-1 are both possible values. */ | |
4791 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4792 | } | |
4793 | ||
c62446b1 PA |
4794 | #if GDB_SELF_TEST |
4795 | ||
4796 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4797 | ||
4798 | /* A wrapper around mapped_index that builds a mock mapped_index, from | |
4799 | the symbol list passed as parameter to the constructor. */ | |
4800 | class mock_mapped_index | |
4801 | { | |
4802 | public: | |
4803 | template<size_t N> | |
4804 | mock_mapped_index (const char *(&symbols)[N]) | |
4805 | : mock_mapped_index (symbols, N) | |
4806 | {} | |
4807 | ||
4808 | /* Access the built index. */ | |
4809 | mapped_index &index () | |
4810 | { return m_index; } | |
4811 | ||
4812 | /* Disable copy. */ | |
4813 | mock_mapped_index(const mock_mapped_index &) = delete; | |
4814 | void operator= (const mock_mapped_index &) = delete; | |
4815 | ||
4816 | private: | |
4817 | mock_mapped_index (const char **symbols, size_t symbols_size) | |
4818 | { | |
4819 | /* No string can live at offset zero. Add a dummy entry. */ | |
4820 | obstack_grow_str0 (&m_constant_pool, ""); | |
4821 | ||
4822 | for (size_t i = 0; i < symbols_size; i++) | |
4823 | { | |
4824 | const char *sym = symbols[i]; | |
4825 | size_t offset = obstack_object_size (&m_constant_pool); | |
4826 | obstack_grow_str0 (&m_constant_pool, sym); | |
4827 | m_symbol_table.push_back (offset); | |
4828 | m_symbol_table.push_back (0); | |
4829 | }; | |
4830 | ||
4831 | m_index.constant_pool = (const char *) obstack_base (&m_constant_pool); | |
4832 | m_index.symbol_table = m_symbol_table.data (); | |
4833 | m_index.symbol_table_slots = m_symbol_table.size () / 2; | |
4834 | } | |
4835 | ||
4836 | public: | |
4837 | /* The built mapped_index. */ | |
4838 | mapped_index m_index{}; | |
4839 | ||
4840 | /* The storage that the built mapped_index uses for symbol and | |
4841 | constant pool tables. */ | |
4842 | std::vector<offset_type> m_symbol_table; | |
4843 | auto_obstack m_constant_pool; | |
4844 | }; | |
4845 | ||
4846 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4847 | string, to pass to print routines. */ | |
4848 | ||
4849 | static const char * | |
4850 | string_or_null (const char *str) | |
4851 | { | |
4852 | return str != NULL ? str : "<null>"; | |
4853 | } | |
4854 | ||
4855 | /* Check if a lookup_name_info built from | |
4856 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4857 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4858 | matching order. If no match expected, then an empty list is | |
4859 | specified. Returns true on success. On failure prints a warning | |
4860 | indicating the file:line that failed, and returns false. */ | |
4861 | ||
4862 | static bool | |
4863 | check_match (const char *file, int line, | |
4864 | mock_mapped_index &mock_index, | |
4865 | const char *name, symbol_name_match_type match_type, | |
4866 | bool completion_mode, | |
4867 | std::initializer_list<const char *> expected_list) | |
4868 | { | |
4869 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4870 | ||
4871 | bool matched = true; | |
4872 | ||
4873 | auto mismatch = [&] (const char *expected_str, | |
4874 | const char *got) | |
4875 | { | |
4876 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4877 | "expected=\"%s\", got=\"%s\"\n"), | |
4878 | file, line, | |
4879 | (match_type == symbol_name_match_type::FULL | |
4880 | ? "FULL" : "WILD"), | |
4881 | name, string_or_null (expected_str), string_or_null (got)); | |
4882 | matched = false; | |
4883 | }; | |
4884 | ||
4885 | auto expected_it = expected_list.begin (); | |
4886 | auto expected_end = expected_list.end (); | |
4887 | ||
4888 | dw2_expand_symtabs_matching_symbol (mock_index.index (), lookup_name, | |
4889 | NULL, ALL_DOMAIN, | |
4890 | [&] (offset_type idx) | |
4891 | { | |
4892 | const char *matched_name = mock_index.index ().symbol_name_at (idx); | |
4893 | const char *expected_str | |
4894 | = expected_it == expected_end ? NULL : *expected_it++; | |
4895 | ||
4896 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4897 | mismatch (expected_str, matched_name); | |
4898 | }); | |
4899 | ||
4900 | const char *expected_str | |
4901 | = expected_it == expected_end ? NULL : *expected_it++; | |
4902 | if (expected_str != NULL) | |
4903 | mismatch (expected_str, NULL); | |
4904 | ||
4905 | return matched; | |
4906 | } | |
4907 | ||
4908 | /* The symbols added to the mock mapped_index for testing (in | |
4909 | canonical form). */ | |
4910 | static const char *test_symbols[] = { | |
4911 | "function", | |
4912 | "std::bar", | |
4913 | "std::zfunction", | |
4914 | "std::zfunction2", | |
4915 | "w1::w2", | |
4916 | "ns::foo<char*>", | |
4917 | "ns::foo<int>", | |
4918 | "ns::foo<long>", | |
a20714ff PA |
4919 | "ns2::tmpl<int>::foo2", |
4920 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4921 | |
e1ef7d7a PA |
4922 | /* These are used to check that the increment-last-char in the |
4923 | matching algorithm for completion doesn't match "t1_fund" when | |
4924 | completing "t1_func". */ | |
4925 | "t1_func", | |
4926 | "t1_func1", | |
4927 | "t1_fund", | |
4928 | "t1_fund1", | |
4929 | ||
4930 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4931 | cp-name-parser understands this as a single identifier ("função" | |
4932 | is "function" in PT). */ | |
4933 | u8"u8função", | |
4934 | ||
4935 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4936 | "yfunc\377", | |
4937 | ||
4938 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4939 | "\377", | |
4940 | "\377\377123", | |
4941 | ||
c62446b1 PA |
4942 | /* A name with all sorts of complications. Starts with "z" to make |
4943 | it easier for the completion tests below. */ | |
4944 | #define Z_SYM_NAME \ | |
4945 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4946 | "::tuple<(anonymous namespace)::ui*, " \ | |
4947 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4948 | ||
4949 | Z_SYM_NAME | |
4950 | }; | |
4951 | ||
5c58de74 PA |
4952 | /* Returns true if the mapped_index::find_name_component_bounds method |
4953 | finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, in | |
4954 | completion mode. */ | |
4955 | ||
4956 | static bool | |
4957 | check_find_bounds_finds (mapped_index &index, | |
4958 | const char *search_name, | |
4959 | gdb::array_view<const char *> expected_syms) | |
4960 | { | |
4961 | lookup_name_info lookup_name (search_name, | |
4962 | symbol_name_match_type::FULL, true); | |
4963 | ||
4964 | auto bounds = index.find_name_components_bounds (lookup_name); | |
4965 | ||
4966 | size_t distance = std::distance (bounds.first, bounds.second); | |
4967 | if (distance != expected_syms.size ()) | |
4968 | return false; | |
4969 | ||
4970 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4971 | { | |
4972 | auto nc_elem = bounds.first + exp_elem; | |
4973 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4974 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4975 | return false; | |
4976 | } | |
4977 | ||
4978 | return true; | |
4979 | } | |
4980 | ||
4981 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4982 | method. */ | |
4983 | ||
c62446b1 | 4984 | static void |
5c58de74 PA |
4985 | test_mapped_index_find_name_component_bounds () |
4986 | { | |
4987 | mock_mapped_index mock_index (test_symbols); | |
4988 | ||
4989 | mock_index.index ().build_name_components (); | |
4990 | ||
4991 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4992 | method in completion mode. */ | |
4993 | { | |
4994 | static const char *expected_syms[] = { | |
4995 | "t1_func", | |
4996 | "t1_func1", | |
5c58de74 PA |
4997 | }; |
4998 | ||
4999 | SELF_CHECK (check_find_bounds_finds (mock_index.index (), | |
5000 | "t1_func", expected_syms)); | |
5001 | } | |
5002 | ||
5003 | /* Check that the increment-last-char in the name matching algorithm | |
5004 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
5005 | { | |
5006 | static const char *expected_syms1[] = { | |
5007 | "\377", | |
5008 | "\377\377123", | |
5009 | }; | |
5010 | SELF_CHECK (check_find_bounds_finds (mock_index.index (), | |
5011 | "\377", expected_syms1)); | |
5012 | ||
5013 | static const char *expected_syms2[] = { | |
5014 | "\377\377123", | |
5015 | }; | |
5016 | SELF_CHECK (check_find_bounds_finds (mock_index.index (), | |
5017 | "\377\377", expected_syms2)); | |
5018 | } | |
5019 | } | |
5020 | ||
5021 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
5022 | ||
5023 | static void | |
5024 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
5025 | { |
5026 | mock_mapped_index mock_index (test_symbols); | |
5027 | ||
5028 | /* We let all tests run until the end even if some fails, for debug | |
5029 | convenience. */ | |
5030 | bool any_mismatch = false; | |
5031 | ||
5032 | /* Create the expected symbols list (an initializer_list). Needed | |
5033 | because lists have commas, and we need to pass them to CHECK, | |
5034 | which is a macro. */ | |
5035 | #define EXPECT(...) { __VA_ARGS__ } | |
5036 | ||
5037 | /* Wrapper for check_match that passes down the current | |
5038 | __FILE__/__LINE__. */ | |
5039 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
5040 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
5041 | mock_index, \ | |
5042 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
5043 | EXPECTED_LIST) | |
5044 | ||
5045 | /* Identity checks. */ | |
5046 | for (const char *sym : test_symbols) | |
5047 | { | |
5048 | /* Should be able to match all existing symbols. */ | |
5049 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
5050 | EXPECT (sym)); | |
5051 | ||
5052 | /* Should be able to match all existing symbols with | |
5053 | parameters. */ | |
5054 | std::string with_params = std::string (sym) + "(int)"; | |
5055 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5056 | EXPECT (sym)); | |
5057 | ||
5058 | /* Should be able to match all existing symbols with | |
5059 | parameters and qualifiers. */ | |
5060 | with_params = std::string (sym) + " ( int ) const"; | |
5061 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5062 | EXPECT (sym)); | |
5063 | ||
5064 | /* This should really find sym, but cp-name-parser.y doesn't | |
5065 | know about lvalue/rvalue qualifiers yet. */ | |
5066 | with_params = std::string (sym) + " ( int ) &&"; | |
5067 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5068 | {}); | |
5069 | } | |
5070 | ||
e1ef7d7a PA |
5071 | /* Check that the name matching algorithm for completion doesn't get |
5072 | confused with Latin1 'ÿ' / 0xff. */ | |
5073 | { | |
5074 | static const char str[] = "\377"; | |
5075 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5076 | EXPECT ("\377", "\377\377123")); | |
5077 | } | |
5078 | ||
5079 | /* Check that the increment-last-char in the matching algorithm for | |
5080 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
5081 | { | |
5082 | static const char str[] = "t1_func"; | |
5083 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5084 | EXPECT ("t1_func", "t1_func1")); | |
5085 | } | |
5086 | ||
c62446b1 PA |
5087 | /* Check that completion mode works at each prefix of the expected |
5088 | symbol name. */ | |
5089 | { | |
5090 | static const char str[] = "function(int)"; | |
5091 | size_t len = strlen (str); | |
5092 | std::string lookup; | |
5093 | ||
5094 | for (size_t i = 1; i < len; i++) | |
5095 | { | |
5096 | lookup.assign (str, i); | |
5097 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5098 | EXPECT ("function")); | |
5099 | } | |
5100 | } | |
5101 | ||
5102 | /* While "w" is a prefix of both components, the match function | |
5103 | should still only be called once. */ | |
5104 | { | |
5105 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
5106 | EXPECT ("w1::w2")); | |
a20714ff PA |
5107 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
5108 | EXPECT ("w1::w2")); | |
c62446b1 PA |
5109 | } |
5110 | ||
5111 | /* Same, with a "complicated" symbol. */ | |
5112 | { | |
5113 | static const char str[] = Z_SYM_NAME; | |
5114 | size_t len = strlen (str); | |
5115 | std::string lookup; | |
5116 | ||
5117 | for (size_t i = 1; i < len; i++) | |
5118 | { | |
5119 | lookup.assign (str, i); | |
5120 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5121 | EXPECT (Z_SYM_NAME)); | |
5122 | } | |
5123 | } | |
5124 | ||
5125 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
5126 | { | |
5127 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
5128 | {}); | |
5129 | } | |
5130 | ||
5131 | /* A complete symbol with parameters matches any overload, since the | |
5132 | index has no overload info. */ | |
5133 | { | |
5134 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
5135 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
5136 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
5137 | EXPECT ("std::zfunction", "std::zfunction2")); | |
5138 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
5139 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
5140 | } |
5141 | ||
5142 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5143 | template argument list. */ | |
5144 | { | |
5145 | static const char expected[] = "ns::foo<int>"; | |
5146 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
5147 | EXPECT (expected)); | |
a20714ff PA |
5148 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
5149 | EXPECT (expected)); | |
c62446b1 PA |
5150 | } |
5151 | ||
5152 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5153 | template argument list that includes a pointer. */ | |
5154 | { | |
5155 | static const char expected[] = "ns::foo<char*>"; | |
5156 | /* Try both completion and non-completion modes. */ | |
5157 | static const bool completion_mode[2] = {false, true}; | |
5158 | for (size_t i = 0; i < 2; i++) | |
5159 | { | |
5160 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
5161 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5162 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
5163 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5164 | |
5165 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
5166 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5167 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
5168 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5169 | } |
5170 | } | |
5171 | ||
5172 | { | |
5173 | /* Check method qualifiers are ignored. */ | |
5174 | static const char expected[] = "ns::foo<char*>"; | |
5175 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
5176 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
5177 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
5178 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
5179 | CHECK_MATCH ("foo < char * > ( int ) const", |
5180 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
5181 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
5182 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
5183 | } |
5184 | ||
5185 | /* Test lookup names that don't match anything. */ | |
5186 | { | |
a20714ff PA |
5187 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
5188 | {}); | |
5189 | ||
c62446b1 PA |
5190 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
5191 | {}); | |
5192 | } | |
5193 | ||
a20714ff PA |
5194 | /* Some wild matching tests, exercising "(anonymous namespace)", |
5195 | which should not be confused with a parameter list. */ | |
5196 | { | |
5197 | static const char *syms[] = { | |
5198 | "A::B::C", | |
5199 | "B::C", | |
5200 | "C", | |
5201 | "A :: B :: C ( int )", | |
5202 | "B :: C ( int )", | |
5203 | "C ( int )", | |
5204 | }; | |
5205 | ||
5206 | for (const char *s : syms) | |
5207 | { | |
5208 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
5209 | EXPECT ("(anonymous namespace)::A::B::C")); | |
5210 | } | |
5211 | } | |
5212 | ||
5213 | { | |
5214 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
5215 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
5216 | EXPECT (expected)); | |
5217 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
5218 | EXPECT (expected)); | |
5219 | } | |
5220 | ||
c62446b1 PA |
5221 | SELF_CHECK (!any_mismatch); |
5222 | ||
5223 | #undef EXPECT | |
5224 | #undef CHECK_MATCH | |
5225 | } | |
5226 | ||
5c58de74 PA |
5227 | static void |
5228 | run_test () | |
5229 | { | |
5230 | test_mapped_index_find_name_component_bounds (); | |
5231 | test_dw2_expand_symtabs_matching_symbol (); | |
5232 | } | |
5233 | ||
c62446b1 PA |
5234 | }} // namespace selftests::dw2_expand_symtabs_matching |
5235 | ||
5236 | #endif /* GDB_SELF_TEST */ | |
5237 | ||
4b514bc8 JK |
5238 | /* If FILE_MATCHER is NULL or if PER_CU has |
5239 | dwarf2_per_cu_quick_data::MARK set (see | |
5240 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5241 | EXPANSION_NOTIFY on it. */ | |
5242 | ||
5243 | static void | |
5244 | dw2_expand_symtabs_matching_one | |
5245 | (struct dwarf2_per_cu_data *per_cu, | |
5246 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5247 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5248 | { | |
5249 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5250 | { | |
5251 | bool symtab_was_null | |
5252 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5253 | ||
5254 | dw2_instantiate_symtab (per_cu); | |
5255 | ||
5256 | if (expansion_notify != NULL | |
5257 | && symtab_was_null | |
5258 | && per_cu->v.quick->compunit_symtab != NULL) | |
5259 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5260 | } | |
5261 | } | |
5262 | ||
3f563c84 PA |
5263 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5264 | matched, to expand corresponding CUs that were marked. IDX is the | |
5265 | index of the symbol name that matched. */ | |
5266 | ||
5267 | static void | |
5268 | dw2_expand_marked_cus | |
5269 | (mapped_index &index, offset_type idx, | |
5270 | struct objfile *objfile, | |
5271 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5272 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5273 | search_domain kind) | |
5274 | { | |
3f563c84 PA |
5275 | offset_type *vec, vec_len, vec_idx; |
5276 | bool global_seen = false; | |
5277 | ||
61920122 PA |
5278 | vec = (offset_type *) (index.constant_pool |
5279 | + MAYBE_SWAP (index.symbol_table[idx + 1])); | |
5280 | vec_len = MAYBE_SWAP (vec[0]); | |
5281 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5282 | { | |
5283 | struct dwarf2_per_cu_data *per_cu; | |
5284 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); | |
5285 | /* This value is only valid for index versions >= 7. */ | |
5286 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5287 | gdb_index_symbol_kind symbol_kind = | |
5288 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5289 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5290 | /* Only check the symbol attributes if they're present. | |
5291 | Indices prior to version 7 don't record them, | |
5292 | and indices >= 7 may elide them for certain symbols | |
5293 | (gold does this). */ | |
5294 | int attrs_valid = | |
5295 | (index.version >= 7 | |
5296 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5297 | ||
5298 | /* Work around gold/15646. */ | |
5299 | if (attrs_valid) | |
9291a0cd | 5300 | { |
61920122 PA |
5301 | if (!is_static && global_seen) |
5302 | continue; | |
5303 | if (!is_static) | |
5304 | global_seen = true; | |
5305 | } | |
3190f0c6 | 5306 | |
61920122 PA |
5307 | /* Only check the symbol's kind if it has one. */ |
5308 | if (attrs_valid) | |
5309 | { | |
5310 | switch (kind) | |
8943b874 | 5311 | { |
61920122 PA |
5312 | case VARIABLES_DOMAIN: |
5313 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5314 | continue; | |
5315 | break; | |
5316 | case FUNCTIONS_DOMAIN: | |
5317 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5318 | continue; |
61920122 PA |
5319 | break; |
5320 | case TYPES_DOMAIN: | |
5321 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5322 | continue; | |
5323 | break; | |
5324 | default: | |
5325 | break; | |
8943b874 | 5326 | } |
61920122 | 5327 | } |
8943b874 | 5328 | |
61920122 PA |
5329 | /* Don't crash on bad data. */ |
5330 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
5331 | + dwarf2_per_objfile->n_type_units)) | |
5332 | { | |
5333 | complaint (&symfile_complaints, | |
5334 | _(".gdb_index entry has bad CU index" | |
5335 | " [in module %s]"), objfile_name (objfile)); | |
5336 | continue; | |
5337 | } | |
5338 | ||
5339 | per_cu = dw2_get_cutu (cu_index); | |
4b514bc8 JK |
5340 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5341 | expansion_notify); | |
61920122 PA |
5342 | } |
5343 | } | |
5344 | ||
4b514bc8 JK |
5345 | /* If FILE_MATCHER is non-NULL, set all the |
5346 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5347 | that match FILE_MATCHER. */ | |
5348 | ||
61920122 | 5349 | static void |
4b514bc8 JK |
5350 | dw_expand_symtabs_matching_file_matcher |
5351 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5352 | { |
4b514bc8 | 5353 | if (file_matcher == NULL) |
61920122 PA |
5354 | return; |
5355 | ||
4b514bc8 JK |
5356 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5357 | ||
5358 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5359 | htab_eq_pointer, | |
5360 | NULL, xcalloc, xfree)); | |
5361 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5362 | htab_eq_pointer, |
5363 | NULL, xcalloc, xfree)); | |
61920122 | 5364 | |
4b514bc8 JK |
5365 | /* The rule is CUs specify all the files, including those used by |
5366 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5367 | |
927aa2e7 JK |
5368 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
5369 | { | |
5370 | int j; | |
5371 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5372 | struct quick_file_names *file_data; | |
5373 | void **slot; | |
5374 | ||
5375 | QUIT; | |
5376 | ||
5377 | per_cu->v.quick->mark = 0; | |
5378 | ||
5379 | /* We only need to look at symtabs not already expanded. */ | |
5380 | if (per_cu->v.quick->compunit_symtab) | |
5381 | continue; | |
5382 | ||
5383 | file_data = dw2_get_file_names (per_cu); | |
5384 | if (file_data == NULL) | |
5385 | continue; | |
5386 | ||
5387 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5388 | continue; | |
5389 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5390 | { | |
5391 | per_cu->v.quick->mark = 1; | |
5392 | continue; | |
5393 | } | |
5394 | ||
5395 | for (j = 0; j < file_data->num_file_names; ++j) | |
5396 | { | |
5397 | const char *this_real_name; | |
5398 | ||
5399 | if (file_matcher (file_data->file_names[j], false)) | |
5400 | { | |
5401 | per_cu->v.quick->mark = 1; | |
5402 | break; | |
5403 | } | |
5404 | ||
5405 | /* Before we invoke realpath, which can get expensive when many | |
5406 | files are involved, do a quick comparison of the basenames. */ | |
5407 | if (!basenames_may_differ | |
5408 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5409 | true)) | |
5410 | continue; | |
5411 | ||
5412 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5413 | if (file_matcher (this_real_name, false)) | |
5414 | { | |
5415 | per_cu->v.quick->mark = 1; | |
5416 | break; | |
5417 | } | |
5418 | } | |
5419 | ||
5420 | slot = htab_find_slot (per_cu->v.quick->mark | |
5421 | ? visited_found.get () | |
5422 | : visited_not_found.get (), | |
5423 | file_data, INSERT); | |
5424 | *slot = file_data; | |
5425 | } | |
5426 | } | |
5427 | ||
5428 | static void | |
5429 | dw2_expand_symtabs_matching | |
5430 | (struct objfile *objfile, | |
5431 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5432 | const lookup_name_info &lookup_name, | |
5433 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5434 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5435 | enum search_domain kind) | |
5436 | { | |
5437 | int i; | |
5438 | ||
5439 | dw2_setup (objfile); | |
5440 | ||
5441 | /* index_table is NULL if OBJF_READNOW. */ | |
5442 | if (!dwarf2_per_objfile->index_table) | |
5443 | return; | |
5444 | ||
5445 | dw_expand_symtabs_matching_file_matcher (file_matcher); | |
5446 | ||
5447 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5448 | ||
5449 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5450 | symbol_matcher, | |
5451 | kind, [&] (offset_type idx) | |
5452 | { | |
5453 | dw2_expand_marked_cus (index, idx, objfile, file_matcher, | |
5454 | expansion_notify, kind); | |
5455 | }); | |
5456 | } | |
5457 | ||
5458 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5459 | symtab. */ | |
5460 | ||
5461 | static struct compunit_symtab * | |
5462 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5463 | CORE_ADDR pc) | |
5464 | { | |
5465 | int i; | |
5466 | ||
5467 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5468 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5469 | return cust; | |
5470 | ||
5471 | if (cust->includes == NULL) | |
5472 | return NULL; | |
5473 | ||
5474 | for (i = 0; cust->includes[i]; ++i) | |
5475 | { | |
5476 | struct compunit_symtab *s = cust->includes[i]; | |
5477 | ||
5478 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5479 | if (s != NULL) | |
5480 | return s; | |
5481 | } | |
5482 | ||
5483 | return NULL; | |
5484 | } | |
5485 | ||
5486 | static struct compunit_symtab * | |
5487 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5488 | struct bound_minimal_symbol msymbol, | |
5489 | CORE_ADDR pc, | |
5490 | struct obj_section *section, | |
5491 | int warn_if_readin) | |
5492 | { | |
5493 | struct dwarf2_per_cu_data *data; | |
5494 | struct compunit_symtab *result; | |
5495 | ||
5496 | dw2_setup (objfile); | |
5497 | ||
5498 | if (!objfile->psymtabs_addrmap) | |
5499 | return NULL; | |
5500 | ||
5501 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, | |
5502 | pc); | |
5503 | if (!data) | |
5504 | return NULL; | |
5505 | ||
5506 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5507 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5508 | paddress (get_objfile_arch (objfile), pc)); | |
5509 | ||
5510 | result | |
5511 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
5512 | pc); | |
5513 | gdb_assert (result != NULL); | |
5514 | return result; | |
5515 | } | |
5516 | ||
5517 | static void | |
5518 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5519 | void *data, int need_fullname) | |
5520 | { | |
5521 | dw2_setup (objfile); | |
5522 | ||
5523 | if (!dwarf2_per_objfile->filenames_cache) | |
5524 | { | |
5525 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5526 | ||
5527 | htab_up visited (htab_create_alloc (10, | |
5528 | htab_hash_pointer, htab_eq_pointer, | |
5529 | NULL, xcalloc, xfree)); | |
5530 | ||
5531 | /* The rule is CUs specify all the files, including those used | |
5532 | by any TU, so there's no need to scan TUs here. We can | |
5533 | ignore file names coming from already-expanded CUs. */ | |
5534 | ||
5535 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5536 | { | |
5537 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); | |
5538 | ||
5539 | if (per_cu->v.quick->compunit_symtab) | |
5540 | { | |
5541 | void **slot = htab_find_slot (visited.get (), | |
5542 | per_cu->v.quick->file_names, | |
5543 | INSERT); | |
5544 | ||
5545 | *slot = per_cu->v.quick->file_names; | |
5546 | } | |
5547 | } | |
5548 | ||
5549 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5550 | { | |
5551 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5552 | struct quick_file_names *file_data; | |
5553 | void **slot; | |
5554 | ||
5555 | /* We only need to look at symtabs not already expanded. */ | |
5556 | if (per_cu->v.quick->compunit_symtab) | |
5557 | continue; | |
5558 | ||
5559 | file_data = dw2_get_file_names (per_cu); | |
5560 | if (file_data == NULL) | |
5561 | continue; | |
5562 | ||
5563 | slot = htab_find_slot (visited.get (), file_data, INSERT); | |
5564 | if (*slot) | |
5565 | { | |
5566 | /* Already visited. */ | |
5567 | continue; | |
5568 | } | |
5569 | *slot = file_data; | |
5570 | ||
5571 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5572 | { | |
5573 | const char *filename = file_data->file_names[j]; | |
5574 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5575 | } | |
5576 | } | |
5577 | } | |
5578 | ||
5579 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5580 | { | |
5581 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5582 | ||
5583 | if (need_fullname) | |
5584 | this_real_name = gdb_realpath (filename); | |
5585 | (*fun) (filename, this_real_name.get (), data); | |
5586 | }); | |
5587 | } | |
5588 | ||
5589 | static int | |
5590 | dw2_has_symbols (struct objfile *objfile) | |
5591 | { | |
5592 | return 1; | |
5593 | } | |
5594 | ||
5595 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5596 | { | |
5597 | dw2_has_symbols, | |
5598 | dw2_find_last_source_symtab, | |
5599 | dw2_forget_cached_source_info, | |
5600 | dw2_map_symtabs_matching_filename, | |
5601 | dw2_lookup_symbol, | |
5602 | dw2_print_stats, | |
5603 | dw2_dump, | |
5604 | dw2_relocate, | |
5605 | dw2_expand_symtabs_for_function, | |
5606 | dw2_expand_all_symtabs, | |
5607 | dw2_expand_symtabs_with_fullname, | |
5608 | dw2_map_matching_symbols, | |
5609 | dw2_expand_symtabs_matching, | |
5610 | dw2_find_pc_sect_compunit_symtab, | |
5611 | NULL, | |
5612 | dw2_map_symbol_filenames | |
5613 | }; | |
5614 | ||
5615 | /* DWARF-5 debug_names reader. */ | |
5616 | ||
5617 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5618 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5619 | ||
5620 | /* A helper function that reads the .debug_names section in SECTION | |
5621 | and fills in MAP. FILENAME is the name of the file containing the | |
5622 | section; it is used for error reporting. | |
5623 | ||
5624 | Returns true if all went well, false otherwise. */ | |
5625 | ||
5626 | static bool | |
5627 | read_debug_names_from_section (struct objfile *objfile, | |
5628 | const char *filename, | |
5629 | struct dwarf2_section_info *section, | |
5630 | mapped_debug_names &map) | |
5631 | { | |
5632 | if (dwarf2_section_empty_p (section)) | |
5633 | return false; | |
5634 | ||
5635 | /* Older elfutils strip versions could keep the section in the main | |
5636 | executable while splitting it for the separate debug info file. */ | |
5637 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5638 | return false; | |
5639 | ||
5640 | dwarf2_read_section (objfile, section); | |
5641 | ||
5642 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5643 | ||
5644 | const gdb_byte *addr = section->buffer; | |
5645 | ||
5646 | bfd *const abfd = get_section_bfd_owner (section); | |
5647 | ||
5648 | unsigned int bytes_read; | |
5649 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5650 | addr += bytes_read; | |
5651 | ||
5652 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5653 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5654 | if (bytes_read + length != section->size) | |
5655 | { | |
5656 | /* There may be multiple per-CU indices. */ | |
5657 | warning (_("Section .debug_names in %s length %s does not match " | |
5658 | "section length %s, ignoring .debug_names."), | |
5659 | filename, plongest (bytes_read + length), | |
5660 | pulongest (section->size)); | |
5661 | return false; | |
5662 | } | |
5663 | ||
5664 | /* The version number. */ | |
5665 | uint16_t version = read_2_bytes (abfd, addr); | |
5666 | addr += 2; | |
5667 | if (version != 5) | |
5668 | { | |
5669 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5670 | "ignoring .debug_names."), | |
5671 | filename, version); | |
5672 | return false; | |
5673 | } | |
5674 | ||
5675 | /* Padding. */ | |
5676 | uint16_t padding = read_2_bytes (abfd, addr); | |
5677 | addr += 2; | |
5678 | if (padding != 0) | |
5679 | { | |
5680 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5681 | "ignoring .debug_names."), | |
5682 | filename, padding); | |
5683 | return false; | |
5684 | } | |
5685 | ||
5686 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5687 | map.cu_count = read_4_bytes (abfd, addr); | |
5688 | addr += 4; | |
5689 | ||
5690 | /* local_type_unit_count - The number of TUs in the local TU | |
5691 | list. */ | |
5692 | map.tu_count = read_4_bytes (abfd, addr); | |
5693 | addr += 4; | |
5694 | ||
5695 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5696 | list. */ | |
5697 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5698 | addr += 4; | |
5699 | if (foreign_tu_count != 0) | |
5700 | { | |
5701 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5702 | "ignoring .debug_names."), | |
5703 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5704 | return false; | |
5705 | } | |
5706 | ||
5707 | /* bucket_count - The number of hash buckets in the hash lookup | |
5708 | table. */ | |
5709 | map.bucket_count = read_4_bytes (abfd, addr); | |
5710 | addr += 4; | |
5711 | ||
5712 | /* name_count - The number of unique names in the index. */ | |
5713 | map.name_count = read_4_bytes (abfd, addr); | |
5714 | addr += 4; | |
5715 | ||
5716 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5717 | table. */ | |
5718 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5719 | addr += 4; | |
5720 | ||
5721 | /* augmentation_string_size - The size in bytes of the augmentation | |
5722 | string. This value is rounded up to a multiple of 4. */ | |
5723 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5724 | addr += 4; | |
5725 | map.augmentation_is_gdb = ((augmentation_string_size | |
5726 | == sizeof (dwarf5_augmentation)) | |
5727 | && memcmp (addr, dwarf5_augmentation, | |
5728 | sizeof (dwarf5_augmentation)) == 0); | |
5729 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5730 | addr += augmentation_string_size; | |
5731 | ||
5732 | /* List of CUs */ | |
5733 | map.cu_table_reordered = addr; | |
5734 | addr += map.cu_count * map.offset_size; | |
5735 | ||
5736 | /* List of Local TUs */ | |
5737 | map.tu_table_reordered = addr; | |
5738 | addr += map.tu_count * map.offset_size; | |
5739 | ||
5740 | /* Hash Lookup Table */ | |
5741 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5742 | addr += map.bucket_count * 4; | |
5743 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5744 | addr += map.name_count * 4; | |
5745 | ||
5746 | /* Name Table */ | |
5747 | map.name_table_string_offs_reordered = addr; | |
5748 | addr += map.name_count * map.offset_size; | |
5749 | map.name_table_entry_offs_reordered = addr; | |
5750 | addr += map.name_count * map.offset_size; | |
5751 | ||
5752 | const gdb_byte *abbrev_table_start = addr; | |
5753 | for (;;) | |
5754 | { | |
5755 | unsigned int bytes_read; | |
5756 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5757 | addr += bytes_read; | |
5758 | if (index_num == 0) | |
5759 | break; | |
5760 | ||
5761 | const auto insertpair | |
5762 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5763 | if (!insertpair.second) | |
5764 | { | |
5765 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5766 | "ignoring .debug_names."), | |
5767 | filename, pulongest (index_num)); | |
5768 | return false; | |
5769 | } | |
5770 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5771 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5772 | addr += bytes_read; | |
5773 | ||
5774 | for (;;) | |
5775 | { | |
5776 | mapped_debug_names::index_val::attr attr; | |
5777 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5778 | addr += bytes_read; | |
5779 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5780 | addr += bytes_read; | |
5781 | if (attr.form == DW_FORM_implicit_const) | |
5782 | { | |
5783 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5784 | &bytes_read); | |
5785 | addr += bytes_read; | |
5786 | } | |
5787 | if (attr.dw_idx == 0 && attr.form == 0) | |
5788 | break; | |
5789 | indexval.attr_vec.push_back (std::move (attr)); | |
5790 | } | |
5791 | } | |
5792 | if (addr != abbrev_table_start + abbrev_table_size) | |
5793 | { | |
5794 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5795 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5796 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5797 | return false; | |
5798 | } | |
5799 | map.entry_pool = addr; | |
5800 | ||
5801 | return true; | |
5802 | } | |
5803 | ||
5804 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5805 | list. */ | |
5806 | ||
5807 | static void | |
5808 | create_cus_from_debug_names_list (struct objfile *objfile, | |
5809 | const mapped_debug_names &map, | |
5810 | dwarf2_section_info §ion, | |
5811 | bool is_dwz, int base_offset) | |
5812 | { | |
5813 | sect_offset sect_off_prev; | |
5814 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5815 | { | |
5816 | sect_offset sect_off_next; | |
5817 | if (i < map.cu_count) | |
5818 | { | |
5819 | sect_off_next | |
5820 | = (sect_offset) (extract_unsigned_integer | |
5821 | (map.cu_table_reordered + i * map.offset_size, | |
5822 | map.offset_size, | |
5823 | map.dwarf5_byte_order)); | |
5824 | } | |
5825 | else | |
5826 | sect_off_next = (sect_offset) section.size; | |
5827 | if (i >= 1) | |
5828 | { | |
5829 | const ULONGEST length = sect_off_next - sect_off_prev; | |
5830 | dwarf2_per_objfile->all_comp_units[base_offset + (i - 1)] | |
5831 | = create_cu_from_index_list (objfile, §ion, is_dwz, | |
5832 | sect_off_prev, length); | |
5833 | } | |
5834 | sect_off_prev = sect_off_next; | |
5835 | } | |
5836 | } | |
5837 | ||
5838 | /* Read the CU list from the mapped index, and use it to create all | |
5839 | the CU objects for this objfile. */ | |
5840 | ||
5841 | static void | |
5842 | create_cus_from_debug_names (struct objfile *objfile, | |
5843 | const mapped_debug_names &map, | |
5844 | const mapped_debug_names &dwz_map) | |
5845 | { | |
5846 | ||
5847 | dwarf2_per_objfile->n_comp_units = map.cu_count + dwz_map.cu_count; | |
5848 | dwarf2_per_objfile->all_comp_units | |
5849 | = XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
5850 | dwarf2_per_objfile->n_comp_units); | |
5851 | ||
5852 | create_cus_from_debug_names_list (objfile, map, dwarf2_per_objfile->info, | |
5853 | false /* is_dwz */, | |
5854 | 0 /* base_offset */); | |
5855 | ||
5856 | if (dwz_map.cu_count == 0) | |
5857 | return; | |
5858 | ||
5859 | dwz_file *dwz = dwarf2_get_dwz_file (); | |
5860 | create_cus_from_debug_names_list (objfile, dwz_map, dwz->info, | |
5861 | true /* is_dwz */, | |
5862 | map.cu_count /* base_offset */); | |
5863 | } | |
5864 | ||
5865 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5866 | elements of all the CUs and return true. Otherwise, return false. */ | |
5867 | ||
5868 | static bool | |
5869 | dwarf2_read_debug_names (struct objfile *objfile) | |
5870 | { | |
5871 | mapped_debug_names local_map, dwz_map; | |
5872 | ||
5873 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5874 | &dwarf2_per_objfile->debug_names, | |
5875 | local_map)) | |
5876 | return false; | |
5877 | ||
5878 | /* Don't use the index if it's empty. */ | |
5879 | if (local_map.name_count == 0) | |
5880 | return false; | |
5881 | ||
5882 | /* If there is a .dwz file, read it so we can get its CU list as | |
5883 | well. */ | |
5884 | dwz_file *dwz = dwarf2_get_dwz_file (); | |
5885 | if (dwz != NULL) | |
5886 | { | |
5887 | if (!read_debug_names_from_section (objfile, | |
5888 | bfd_get_filename (dwz->dwz_bfd), | |
5889 | &dwz->debug_names, dwz_map)) | |
5890 | { | |
5891 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
5892 | bfd_get_filename (dwz->dwz_bfd)); | |
5893 | return false; | |
5894 | } | |
5895 | } | |
5896 | ||
5897 | create_cus_from_debug_names (objfile, local_map, dwz_map); | |
5898 | ||
5899 | if (local_map.tu_count != 0) | |
5900 | { | |
5901 | /* We can only handle a single .debug_types when we have an | |
5902 | index. */ | |
5903 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
5904 | return false; | |
5905 | ||
5906 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
5907 | dwarf2_per_objfile->types, 0); | |
5908 | ||
5909 | create_signatured_type_table_from_debug_names | |
5910 | (objfile, local_map, section, &dwarf2_per_objfile->abbrev); | |
5911 | } | |
5912 | ||
5913 | create_addrmap_from_aranges (objfile, &dwarf2_per_objfile->debug_aranges); | |
5914 | ||
5915 | dwarf2_per_objfile->debug_names_table.reset (new mapped_debug_names); | |
5916 | *dwarf2_per_objfile->debug_names_table = std::move (local_map); | |
5917 | dwarf2_per_objfile->using_index = 1; | |
5918 | dwarf2_per_objfile->quick_file_names_table = | |
5919 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
5920 | ||
5921 | return true; | |
5922 | } | |
5923 | ||
5924 | /* Symbol name hashing function as specified by DWARF-5. */ | |
5925 | ||
5926 | static uint32_t | |
5927 | dwarf5_djb_hash (const char *str_) | |
5928 | { | |
5929 | const unsigned char *str = (const unsigned char *) str_; | |
5930 | ||
5931 | /* Note: tolower here ignores UTF-8, which isn't fully compliant. | |
5932 | See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */ | |
5933 | ||
5934 | uint32_t hash = 5381; | |
5935 | while (int c = *str++) | |
5936 | hash = hash * 33 + tolower (c); | |
5937 | return hash; | |
5938 | } | |
5939 | ||
5940 | /* Type used to manage iterating over all CUs looking for a symbol for | |
5941 | .debug_names. */ | |
5942 | ||
5943 | class dw2_debug_names_iterator | |
5944 | { | |
5945 | public: | |
5946 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
5947 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
5948 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5949 | bool want_specific_block, | |
5950 | block_enum block_index, domain_enum domain, | |
5951 | const char *name) | |
5952 | : m_map (map), m_want_specific_block (want_specific_block), | |
5953 | m_block_index (block_index), m_domain (domain), | |
5954 | m_addr (find_vec_in_debug_names (map, name)) | |
5955 | {} | |
5956 | ||
5957 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5958 | search_domain search, uint32_t namei) | |
5959 | : m_map (map), | |
5960 | m_search (search), | |
5961 | m_addr (find_vec_in_debug_names (map, namei)) | |
5962 | {} | |
5963 | ||
5964 | /* Return the next matching CU or NULL if there are no more. */ | |
5965 | dwarf2_per_cu_data *next (); | |
5966 | ||
5967 | private: | |
5968 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5969 | const char *name); | |
5970 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5971 | uint32_t namei); | |
5972 | ||
5973 | /* The internalized form of .debug_names. */ | |
5974 | const mapped_debug_names &m_map; | |
5975 | ||
5976 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
5977 | const bool m_want_specific_block = false; | |
5978 | ||
5979 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
5980 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
5981 | value. */ | |
5982 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
5983 | ||
5984 | /* The kind of symbol we're looking for. */ | |
5985 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5986 | const search_domain m_search = ALL_DOMAIN; | |
5987 | ||
5988 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5989 | not found. */ | |
5990 | const gdb_byte *m_addr; | |
5991 | }; | |
5992 | ||
5993 | const char * | |
5994 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5995 | { | |
5996 | const ULONGEST namei_string_offs | |
5997 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5998 | + namei * offset_size), | |
5999 | offset_size, | |
6000 | dwarf5_byte_order); | |
6001 | return read_indirect_string_at_offset | |
6002 | (dwarf2_per_objfile->objfile->obfd, namei_string_offs); | |
6003 | } | |
6004 | ||
6005 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
6006 | found, return pointer to its pool data. If NAME cannot be found, | |
6007 | return NULL. */ | |
6008 | ||
6009 | const gdb_byte * | |
6010 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6011 | (const mapped_debug_names &map, const char *name) | |
6012 | { | |
6013 | int (*cmp) (const char *, const char *); | |
6014 | ||
6015 | if (current_language->la_language == language_cplus | |
6016 | || current_language->la_language == language_fortran | |
6017 | || current_language->la_language == language_d) | |
6018 | { | |
6019 | /* NAME is already canonical. Drop any qualifiers as | |
6020 | .debug_names does not contain any. */ | |
6021 | ||
6022 | if (strchr (name, '(') != NULL) | |
6023 | { | |
6024 | gdb::unique_xmalloc_ptr<char> without_params | |
6025 | = cp_remove_params (name); | |
6026 | ||
6027 | if (without_params != NULL) | |
6028 | { | |
6029 | name = without_params.get(); | |
6030 | } | |
6031 | } | |
6032 | } | |
6033 | ||
6034 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
6035 | ||
6036 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
6037 | uint32_t namei | |
6038 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6039 | (map.bucket_table_reordered | |
6040 | + (full_hash % map.bucket_count)), 4, | |
6041 | map.dwarf5_byte_order); | |
6042 | if (namei == 0) | |
6043 | return NULL; | |
6044 | --namei; | |
6045 | if (namei >= map.name_count) | |
6046 | { | |
6047 | complaint (&symfile_complaints, | |
6048 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6049 | "[in module %s]"), | |
6050 | namei, map.name_count, | |
6051 | objfile_name (dwarf2_per_objfile->objfile)); | |
6052 | return NULL; | |
6053 | } | |
6054 | ||
6055 | for (;;) | |
6056 | { | |
6057 | const uint32_t namei_full_hash | |
6058 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6059 | (map.hash_table_reordered + namei), 4, | |
6060 | map.dwarf5_byte_order); | |
6061 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
6062 | return NULL; | |
6063 | ||
6064 | if (full_hash == namei_full_hash) | |
6065 | { | |
6066 | const char *const namei_string = map.namei_to_name (namei); | |
6067 | ||
6068 | #if 0 /* An expensive sanity check. */ | |
6069 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
6070 | { | |
6071 | complaint (&symfile_complaints, | |
6072 | _("Wrong .debug_names hash for string at index %u " | |
6073 | "[in module %s]"), | |
6074 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
6075 | return NULL; | |
6076 | } | |
6077 | #endif | |
6078 | ||
6079 | if (cmp (namei_string, name) == 0) | |
6080 | { | |
6081 | const ULONGEST namei_entry_offs | |
6082 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6083 | + namei * map.offset_size), | |
6084 | map.offset_size, map.dwarf5_byte_order); | |
6085 | return map.entry_pool + namei_entry_offs; | |
6086 | } | |
6087 | } | |
6088 | ||
6089 | ++namei; | |
6090 | if (namei >= map.name_count) | |
6091 | return NULL; | |
6092 | } | |
6093 | } | |
6094 | ||
6095 | const gdb_byte * | |
6096 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6097 | (const mapped_debug_names &map, uint32_t namei) | |
6098 | { | |
6099 | if (namei >= map.name_count) | |
6100 | { | |
6101 | complaint (&symfile_complaints, | |
6102 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6103 | "[in module %s]"), | |
6104 | namei, map.name_count, | |
6105 | objfile_name (dwarf2_per_objfile->objfile)); | |
6106 | return NULL; | |
6107 | } | |
6108 | ||
6109 | const ULONGEST namei_entry_offs | |
6110 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6111 | + namei * map.offset_size), | |
6112 | map.offset_size, map.dwarf5_byte_order); | |
6113 | return map.entry_pool + namei_entry_offs; | |
6114 | } | |
6115 | ||
6116 | /* See dw2_debug_names_iterator. */ | |
6117 | ||
6118 | dwarf2_per_cu_data * | |
6119 | dw2_debug_names_iterator::next () | |
6120 | { | |
6121 | if (m_addr == NULL) | |
6122 | return NULL; | |
6123 | ||
6124 | bfd *const abfd = dwarf2_per_objfile->objfile->obfd; | |
6125 | ||
6126 | again: | |
6127 | ||
6128 | unsigned int bytes_read; | |
6129 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6130 | m_addr += bytes_read; | |
6131 | if (abbrev == 0) | |
6132 | return NULL; | |
6133 | ||
6134 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
6135 | if (indexval_it == m_map.abbrev_map.cend ()) | |
6136 | { | |
6137 | complaint (&symfile_complaints, | |
6138 | _("Wrong .debug_names undefined abbrev code %s " | |
6139 | "[in module %s]"), | |
6140 | pulongest (abbrev), objfile_name (dwarf2_per_objfile->objfile)); | |
6141 | return NULL; | |
6142 | } | |
6143 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
6144 | bool have_is_static = false; | |
6145 | bool is_static; | |
6146 | dwarf2_per_cu_data *per_cu = NULL; | |
6147 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
6148 | { | |
6149 | ULONGEST ull; | |
6150 | switch (attr.form) | |
6151 | { | |
6152 | case DW_FORM_implicit_const: | |
6153 | ull = attr.implicit_const; | |
6154 | break; | |
6155 | case DW_FORM_flag_present: | |
6156 | ull = 1; | |
6157 | break; | |
6158 | case DW_FORM_udata: | |
6159 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6160 | m_addr += bytes_read; | |
6161 | break; | |
6162 | default: | |
6163 | complaint (&symfile_complaints, | |
6164 | _("Unsupported .debug_names form %s [in module %s]"), | |
6165 | dwarf_form_name (attr.form), | |
6166 | objfile_name (dwarf2_per_objfile->objfile)); | |
6167 | return NULL; | |
6168 | } | |
6169 | switch (attr.dw_idx) | |
6170 | { | |
6171 | case DW_IDX_compile_unit: | |
6172 | /* Don't crash on bad data. */ | |
6173 | if (ull >= (dwarf2_per_objfile->n_comp_units | |
6174 | + dwarf2_per_objfile->n_type_units)) | |
6175 | { | |
6176 | complaint (&symfile_complaints, | |
6177 | _(".debug_names entry has bad CU index %s" | |
6178 | " [in module %s]"), | |
6179 | pulongest (ull), | |
6180 | objfile_name (dwarf2_per_objfile->objfile)); | |
6181 | continue; | |
6182 | } | |
6183 | per_cu = dw2_get_cutu (ull); | |
6184 | break; | |
6185 | case DW_IDX_GNU_internal: | |
6186 | if (!m_map.augmentation_is_gdb) | |
6187 | break; | |
6188 | have_is_static = true; | |
6189 | is_static = true; | |
6190 | break; | |
6191 | case DW_IDX_GNU_external: | |
6192 | if (!m_map.augmentation_is_gdb) | |
6193 | break; | |
6194 | have_is_static = true; | |
6195 | is_static = false; | |
6196 | break; | |
6197 | } | |
6198 | } | |
6199 | ||
6200 | /* Skip if already read in. */ | |
6201 | if (per_cu->v.quick->compunit_symtab) | |
6202 | goto again; | |
6203 | ||
6204 | /* Check static vs global. */ | |
6205 | if (have_is_static) | |
6206 | { | |
6207 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
6208 | if (m_want_specific_block && want_static != is_static) | |
6209 | goto again; | |
6210 | } | |
6211 | ||
6212 | /* Match dw2_symtab_iter_next, symbol_kind | |
6213 | and debug_names::psymbol_tag. */ | |
6214 | switch (m_domain) | |
6215 | { | |
6216 | case VAR_DOMAIN: | |
6217 | switch (indexval.dwarf_tag) | |
6218 | { | |
6219 | case DW_TAG_variable: | |
6220 | case DW_TAG_subprogram: | |
6221 | /* Some types are also in VAR_DOMAIN. */ | |
6222 | case DW_TAG_typedef: | |
6223 | case DW_TAG_structure_type: | |
6224 | break; | |
6225 | default: | |
6226 | goto again; | |
6227 | } | |
6228 | break; | |
6229 | case STRUCT_DOMAIN: | |
6230 | switch (indexval.dwarf_tag) | |
6231 | { | |
6232 | case DW_TAG_typedef: | |
6233 | case DW_TAG_structure_type: | |
6234 | break; | |
6235 | default: | |
6236 | goto again; | |
6237 | } | |
6238 | break; | |
6239 | case LABEL_DOMAIN: | |
6240 | switch (indexval.dwarf_tag) | |
6241 | { | |
6242 | case 0: | |
6243 | case DW_TAG_variable: | |
6244 | break; | |
6245 | default: | |
6246 | goto again; | |
6247 | } | |
6248 | break; | |
6249 | default: | |
6250 | break; | |
6251 | } | |
6252 | ||
6253 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6254 | debug_names::psymbol_tag. */ | |
6255 | switch (m_search) | |
4b514bc8 | 6256 | { |
927aa2e7 JK |
6257 | case VARIABLES_DOMAIN: |
6258 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6259 | { |
927aa2e7 JK |
6260 | case DW_TAG_variable: |
6261 | break; | |
6262 | default: | |
6263 | goto again; | |
4b514bc8 | 6264 | } |
927aa2e7 JK |
6265 | break; |
6266 | case FUNCTIONS_DOMAIN: | |
6267 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6268 | { |
927aa2e7 JK |
6269 | case DW_TAG_subprogram: |
6270 | break; | |
6271 | default: | |
6272 | goto again; | |
4b514bc8 | 6273 | } |
927aa2e7 JK |
6274 | break; |
6275 | case TYPES_DOMAIN: | |
6276 | switch (indexval.dwarf_tag) | |
6277 | { | |
6278 | case DW_TAG_typedef: | |
6279 | case DW_TAG_structure_type: | |
6280 | break; | |
6281 | default: | |
6282 | goto again; | |
6283 | } | |
6284 | break; | |
6285 | default: | |
6286 | break; | |
4b514bc8 | 6287 | } |
927aa2e7 JK |
6288 | |
6289 | return per_cu; | |
4b514bc8 | 6290 | } |
61920122 | 6291 | |
927aa2e7 JK |
6292 | static struct compunit_symtab * |
6293 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6294 | const char *name, domain_enum domain) | |
4b514bc8 | 6295 | { |
927aa2e7 | 6296 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
4b514bc8 | 6297 | dw2_setup (objfile); |
61920122 | 6298 | |
927aa2e7 JK |
6299 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6300 | if (!mapp) | |
61920122 | 6301 | { |
927aa2e7 JK |
6302 | /* index is NULL if OBJF_READNOW. */ |
6303 | return NULL; | |
6304 | } | |
6305 | const auto &map = *mapp; | |
9291a0cd | 6306 | |
927aa2e7 JK |
6307 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6308 | block_index, domain, name); | |
9703b513 | 6309 | |
927aa2e7 JK |
6310 | struct compunit_symtab *stab_best = NULL; |
6311 | struct dwarf2_per_cu_data *per_cu; | |
6312 | while ((per_cu = iter.next ()) != NULL) | |
6313 | { | |
6314 | struct symbol *sym, *with_opaque = NULL; | |
6315 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
6316 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
6317 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6318 | |
927aa2e7 JK |
6319 | sym = block_find_symbol (block, name, domain, |
6320 | block_find_non_opaque_type_preferred, | |
6321 | &with_opaque); | |
9703b513 | 6322 | |
927aa2e7 JK |
6323 | /* Some caution must be observed with overloaded functions and |
6324 | methods, since the index will not contain any overload | |
6325 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6326 | |
927aa2e7 JK |
6327 | if (sym != NULL |
6328 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6329 | return stab; | |
6330 | if (with_opaque != NULL | |
6331 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6332 | stab_best = stab; | |
9703b513 | 6333 | |
927aa2e7 | 6334 | /* Keep looking through other CUs. */ |
9703b513 TT |
6335 | } |
6336 | ||
927aa2e7 | 6337 | return stab_best; |
9703b513 TT |
6338 | } |
6339 | ||
927aa2e7 JK |
6340 | /* This dumps minimal information about .debug_names. It is called |
6341 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6342 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6343 | |
927aa2e7 JK |
6344 | static void |
6345 | dw2_debug_names_dump (struct objfile *objfile) | |
6346 | { | |
9291a0cd | 6347 | dw2_setup (objfile); |
927aa2e7 JK |
6348 | gdb_assert (dwarf2_per_objfile->using_index); |
6349 | printf_filtered (".debug_names:"); | |
6350 | if (dwarf2_per_objfile->debug_names_table) | |
6351 | printf_filtered (" exists\n"); | |
6352 | else | |
6353 | printf_filtered (" faked for \"readnow\"\n"); | |
6354 | printf_filtered ("\n"); | |
9291a0cd TT |
6355 | } |
6356 | ||
9291a0cd | 6357 | static void |
927aa2e7 JK |
6358 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6359 | const char *func_name) | |
9291a0cd | 6360 | { |
9291a0cd | 6361 | dw2_setup (objfile); |
ae2de4f8 | 6362 | |
927aa2e7 JK |
6363 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6364 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6365 | { |
927aa2e7 | 6366 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6367 | |
927aa2e7 JK |
6368 | /* Note: It doesn't matter what we pass for block_index here. */ |
6369 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6370 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6371 | |
927aa2e7 JK |
6372 | struct dwarf2_per_cu_data *per_cu; |
6373 | while ((per_cu = iter.next ()) != NULL) | |
6374 | dw2_instantiate_symtab (per_cu); | |
6375 | } | |
6376 | } | |
24c79950 | 6377 | |
927aa2e7 JK |
6378 | static void |
6379 | dw2_debug_names_expand_symtabs_matching | |
6380 | (struct objfile *objfile, | |
6381 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6382 | const lookup_name_info &lookup_name, | |
6383 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6384 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6385 | enum search_domain kind) | |
6386 | { | |
6387 | dw2_setup (objfile); | |
9291a0cd | 6388 | |
927aa2e7 JK |
6389 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6390 | if (!dwarf2_per_objfile->debug_names_table) | |
6391 | return; | |
9291a0cd | 6392 | |
927aa2e7 | 6393 | dw_expand_symtabs_matching_file_matcher (file_matcher); |
24c79950 | 6394 | |
927aa2e7 | 6395 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6396 | |
927aa2e7 JK |
6397 | for (uint32_t namei = 0; namei < map.name_count; ++namei) |
6398 | { | |
6399 | QUIT; | |
74e2f255 | 6400 | |
927aa2e7 JK |
6401 | const char *const namei_string = map.namei_to_name (namei); |
6402 | if (symbol_matcher != NULL && !symbol_matcher (namei_string)) | |
6403 | continue; | |
bbf2f4df | 6404 | |
927aa2e7 JK |
6405 | /* The name was matched, now expand corresponding CUs that were |
6406 | marked. */ | |
6407 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6408 | |
927aa2e7 JK |
6409 | struct dwarf2_per_cu_data *per_cu; |
6410 | while ((per_cu = iter.next ()) != NULL) | |
6411 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6412 | expansion_notify); | |
9291a0cd | 6413 | } |
9291a0cd TT |
6414 | } |
6415 | ||
927aa2e7 | 6416 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6417 | { |
6418 | dw2_has_symbols, | |
6419 | dw2_find_last_source_symtab, | |
6420 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6421 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6422 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6423 | dw2_print_stats, |
927aa2e7 | 6424 | dw2_debug_names_dump, |
9291a0cd | 6425 | dw2_relocate, |
927aa2e7 | 6426 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6427 | dw2_expand_all_symtabs, |
652a8996 | 6428 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6429 | dw2_map_matching_symbols, |
927aa2e7 | 6430 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6431 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6432 | NULL, |
9291a0cd TT |
6433 | dw2_map_symbol_filenames |
6434 | }; | |
6435 | ||
6436 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
6437 | file will use psymtabs, or 1 if using the GNU index. */ | |
6438 | ||
abccd1e7 | 6439 | const sym_fns & |
9291a0cd TT |
6440 | dwarf2_initialize_objfile (struct objfile *objfile) |
6441 | { | |
6442 | /* If we're about to read full symbols, don't bother with the | |
6443 | indices. In this case we also don't care if some other debug | |
6444 | format is making psymtabs, because they are all about to be | |
6445 | expanded anyway. */ | |
6446 | if ((objfile->flags & OBJF_READNOW)) | |
6447 | { | |
6448 | int i; | |
6449 | ||
6450 | dwarf2_per_objfile->using_index = 1; | |
6451 | create_all_comp_units (objfile); | |
0e50663e | 6452 | create_all_type_units (objfile); |
7b9f3c50 DE |
6453 | dwarf2_per_objfile->quick_file_names_table = |
6454 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 6455 | |
1fd400ff | 6456 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 6457 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 6458 | { |
8832e7e3 | 6459 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 6460 | |
e254ef6a DE |
6461 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6462 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6463 | } |
6464 | ||
6465 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6466 | these functions will be no-ops because we will have expanded | |
6467 | all symtabs. */ | |
abccd1e7 | 6468 | return elf_sym_fns_gdb_index; |
9291a0cd TT |
6469 | } |
6470 | ||
927aa2e7 JK |
6471 | if (dwarf2_read_debug_names (objfile)) |
6472 | return elf_sym_fns_debug_names; | |
6473 | ||
9291a0cd | 6474 | if (dwarf2_read_index (objfile)) |
abccd1e7 | 6475 | return elf_sym_fns_gdb_index; |
9291a0cd | 6476 | |
abccd1e7 | 6477 | return elf_sym_fns_lazy_psyms; |
9291a0cd TT |
6478 | } |
6479 | ||
6480 | \f | |
6481 | ||
dce234bc PP |
6482 | /* Build a partial symbol table. */ |
6483 | ||
6484 | void | |
f29dff0a | 6485 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6486 | { |
c9bf0622 | 6487 | |
af5bf4ad SM |
6488 | if (objfile->global_psymbols.capacity () == 0 |
6489 | && objfile->static_psymbols.capacity () == 0) | |
6490 | init_psymbol_list (objfile, 1024); | |
c906108c | 6491 | |
492d29ea | 6492 | TRY |
c9bf0622 TT |
6493 | { |
6494 | /* This isn't really ideal: all the data we allocate on the | |
6495 | objfile's obstack is still uselessly kept around. However, | |
6496 | freeing it seems unsafe. */ | |
906768f9 | 6497 | psymtab_discarder psymtabs (objfile); |
c9bf0622 | 6498 | dwarf2_build_psymtabs_hard (objfile); |
906768f9 | 6499 | psymtabs.keep (); |
c9bf0622 | 6500 | } |
492d29ea PA |
6501 | CATCH (except, RETURN_MASK_ERROR) |
6502 | { | |
6503 | exception_print (gdb_stderr, except); | |
6504 | } | |
6505 | END_CATCH | |
c906108c | 6506 | } |
c906108c | 6507 | |
1ce1cefd DE |
6508 | /* Return the total length of the CU described by HEADER. */ |
6509 | ||
6510 | static unsigned int | |
6511 | get_cu_length (const struct comp_unit_head *header) | |
6512 | { | |
6513 | return header->initial_length_size + header->length; | |
6514 | } | |
6515 | ||
9c541725 | 6516 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6517 | |
9c541725 PA |
6518 | static inline bool |
6519 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6520 | { |
9c541725 PA |
6521 | sect_offset bottom = cu_header->sect_off; |
6522 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6523 | |
9c541725 | 6524 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6525 | } |
6526 | ||
3b80fe9b DE |
6527 | /* Find the base address of the compilation unit for range lists and |
6528 | location lists. It will normally be specified by DW_AT_low_pc. | |
6529 | In DWARF-3 draft 4, the base address could be overridden by | |
6530 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6531 | compilation units with discontinuous ranges. */ | |
6532 | ||
6533 | static void | |
6534 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6535 | { | |
6536 | struct attribute *attr; | |
6537 | ||
6538 | cu->base_known = 0; | |
6539 | cu->base_address = 0; | |
6540 | ||
6541 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6542 | if (attr) | |
6543 | { | |
31aa7e4e | 6544 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6545 | cu->base_known = 1; |
6546 | } | |
6547 | else | |
6548 | { | |
6549 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6550 | if (attr) | |
6551 | { | |
31aa7e4e | 6552 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6553 | cu->base_known = 1; |
6554 | } | |
6555 | } | |
6556 | } | |
6557 | ||
93311388 | 6558 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6559 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6560 | NOTE: This leaves members offset, first_die_offset to be filled in |
6561 | by the caller. */ | |
107d2387 | 6562 | |
d521ce57 | 6563 | static const gdb_byte * |
107d2387 | 6564 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6565 | const gdb_byte *info_ptr, |
6566 | struct dwarf2_section_info *section, | |
6567 | rcuh_kind section_kind) | |
107d2387 AC |
6568 | { |
6569 | int signed_addr; | |
891d2f0b | 6570 | unsigned int bytes_read; |
43988095 JK |
6571 | const char *filename = get_section_file_name (section); |
6572 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6573 | |
6574 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6575 | cu_header->initial_length_size = bytes_read; | |
6576 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6577 | info_ptr += bytes_read; |
107d2387 AC |
6578 | cu_header->version = read_2_bytes (abfd, info_ptr); |
6579 | info_ptr += 2; | |
43988095 JK |
6580 | if (cu_header->version < 5) |
6581 | switch (section_kind) | |
6582 | { | |
6583 | case rcuh_kind::COMPILE: | |
6584 | cu_header->unit_type = DW_UT_compile; | |
6585 | break; | |
6586 | case rcuh_kind::TYPE: | |
6587 | cu_header->unit_type = DW_UT_type; | |
6588 | break; | |
6589 | default: | |
6590 | internal_error (__FILE__, __LINE__, | |
6591 | _("read_comp_unit_head: invalid section_kind")); | |
6592 | } | |
6593 | else | |
6594 | { | |
6595 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6596 | (read_1_byte (abfd, info_ptr)); | |
6597 | info_ptr += 1; | |
6598 | switch (cu_header->unit_type) | |
6599 | { | |
6600 | case DW_UT_compile: | |
6601 | if (section_kind != rcuh_kind::COMPILE) | |
6602 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6603 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6604 | filename); | |
6605 | break; | |
6606 | case DW_UT_type: | |
6607 | section_kind = rcuh_kind::TYPE; | |
6608 | break; | |
6609 | default: | |
6610 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6611 | "(is %d, should be %d or %d) [in module %s]"), | |
6612 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6613 | } | |
6614 | ||
6615 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6616 | info_ptr += 1; | |
6617 | } | |
9c541725 PA |
6618 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6619 | cu_header, | |
6620 | &bytes_read); | |
613e1657 | 6621 | info_ptr += bytes_read; |
43988095 JK |
6622 | if (cu_header->version < 5) |
6623 | { | |
6624 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6625 | info_ptr += 1; | |
6626 | } | |
107d2387 AC |
6627 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6628 | if (signed_addr < 0) | |
8e65ff28 | 6629 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6630 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6631 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6632 | |
43988095 JK |
6633 | if (section_kind == rcuh_kind::TYPE) |
6634 | { | |
6635 | LONGEST type_offset; | |
6636 | ||
6637 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6638 | info_ptr += 8; | |
6639 | ||
6640 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6641 | info_ptr += bytes_read; | |
9c541725 PA |
6642 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6643 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6644 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6645 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6646 | filename); | |
6647 | } | |
6648 | ||
107d2387 AC |
6649 | return info_ptr; |
6650 | } | |
6651 | ||
36586728 TT |
6652 | /* Helper function that returns the proper abbrev section for |
6653 | THIS_CU. */ | |
6654 | ||
6655 | static struct dwarf2_section_info * | |
6656 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6657 | { | |
6658 | struct dwarf2_section_info *abbrev; | |
6659 | ||
6660 | if (this_cu->is_dwz) | |
6661 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
6662 | else | |
6663 | abbrev = &dwarf2_per_objfile->abbrev; | |
6664 | ||
6665 | return abbrev; | |
6666 | } | |
6667 | ||
9ff913ba DE |
6668 | /* Subroutine of read_and_check_comp_unit_head and |
6669 | read_and_check_type_unit_head to simplify them. | |
6670 | Perform various error checking on the header. */ | |
6671 | ||
6672 | static void | |
6673 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
6674 | struct dwarf2_section_info *section, |
6675 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6676 | { |
a32a8923 | 6677 | const char *filename = get_section_file_name (section); |
9ff913ba | 6678 | |
43988095 | 6679 | if (header->version < 2 || header->version > 5) |
9ff913ba | 6680 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 6681 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
6682 | filename); |
6683 | ||
9c541725 | 6684 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6685 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9c541725 PA |
6686 | error (_("Dwarf Error: bad offset (0x%x) in compilation unit header " |
6687 | "(offset 0x%x + 6) [in module %s]"), | |
6688 | to_underlying (header->abbrev_sect_off), | |
6689 | to_underlying (header->sect_off), | |
9ff913ba DE |
6690 | filename); |
6691 | ||
9c541725 | 6692 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6693 | avoid potential 32-bit overflow. */ |
9c541725 | 6694 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6695 | > section->size) |
9c541725 PA |
6696 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
6697 | "(offset 0x%x + 0) [in module %s]"), | |
6698 | header->length, to_underlying (header->sect_off), | |
9ff913ba DE |
6699 | filename); |
6700 | } | |
6701 | ||
6702 | /* Read in a CU/TU header and perform some basic error checking. | |
6703 | The contents of the header are stored in HEADER. | |
6704 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6705 | |
d521ce57 | 6706 | static const gdb_byte * |
9ff913ba DE |
6707 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
6708 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 6709 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6710 | const gdb_byte *info_ptr, |
43988095 | 6711 | rcuh_kind section_kind) |
72bf9492 | 6712 | { |
d521ce57 | 6713 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6714 | |
9c541725 | 6715 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6716 | |
43988095 | 6717 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6718 | |
9c541725 | 6719 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6720 | |
4bdcc0c1 | 6721 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
6722 | |
6723 | return info_ptr; | |
348e048f DE |
6724 | } |
6725 | ||
f4dc4d17 DE |
6726 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6727 | ||
6728 | static sect_offset | |
6729 | read_abbrev_offset (struct dwarf2_section_info *section, | |
9c541725 | 6730 | sect_offset sect_off) |
f4dc4d17 | 6731 | { |
a32a8923 | 6732 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6733 | const gdb_byte *info_ptr; |
ac298888 | 6734 | unsigned int initial_length_size, offset_size; |
43988095 | 6735 | uint16_t version; |
f4dc4d17 DE |
6736 | |
6737 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6738 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6739 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6740 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6741 | info_ptr += initial_length_size; |
6742 | ||
6743 | version = read_2_bytes (abfd, info_ptr); | |
6744 | info_ptr += 2; | |
6745 | if (version >= 5) | |
6746 | { | |
6747 | /* Skip unit type and address size. */ | |
6748 | info_ptr += 2; | |
6749 | } | |
6750 | ||
9c541725 | 6751 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6752 | } |
6753 | ||
aaa75496 JB |
6754 | /* Allocate a new partial symtab for file named NAME and mark this new |
6755 | partial symtab as being an include of PST. */ | |
6756 | ||
6757 | static void | |
d521ce57 | 6758 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6759 | struct objfile *objfile) |
6760 | { | |
6761 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6762 | ||
fbd9ab74 JK |
6763 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6764 | { | |
6765 | /* It shares objfile->objfile_obstack. */ | |
6766 | subpst->dirname = pst->dirname; | |
6767 | } | |
6768 | ||
aaa75496 JB |
6769 | subpst->textlow = 0; |
6770 | subpst->texthigh = 0; | |
6771 | ||
8d749320 SM |
6772 | subpst->dependencies |
6773 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6774 | subpst->dependencies[0] = pst; |
6775 | subpst->number_of_dependencies = 1; | |
6776 | ||
6777 | subpst->globals_offset = 0; | |
6778 | subpst->n_global_syms = 0; | |
6779 | subpst->statics_offset = 0; | |
6780 | subpst->n_static_syms = 0; | |
43f3e411 | 6781 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6782 | subpst->read_symtab = pst->read_symtab; |
6783 | subpst->readin = 0; | |
6784 | ||
6785 | /* No private part is necessary for include psymtabs. This property | |
6786 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6787 | the regular ones. */ |
58a9656e | 6788 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6789 | } |
6790 | ||
6791 | /* Read the Line Number Program data and extract the list of files | |
6792 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6793 | partial symtab for each of these included files. */ |
aaa75496 JB |
6794 | |
6795 | static void | |
6796 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6797 | struct die_info *die, |
6798 | struct partial_symtab *pst) | |
aaa75496 | 6799 | { |
fff8551c | 6800 | line_header_up lh; |
d85a05f0 | 6801 | struct attribute *attr; |
aaa75496 | 6802 | |
d85a05f0 DJ |
6803 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6804 | if (attr) | |
9c541725 | 6805 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6806 | if (lh == NULL) |
6807 | return; /* No linetable, so no includes. */ | |
6808 | ||
c6da4cef | 6809 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 6810 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
6811 | } |
6812 | ||
348e048f | 6813 | static hashval_t |
52dc124a | 6814 | hash_signatured_type (const void *item) |
348e048f | 6815 | { |
9a3c8263 SM |
6816 | const struct signatured_type *sig_type |
6817 | = (const struct signatured_type *) item; | |
9a619af0 | 6818 | |
348e048f | 6819 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6820 | return sig_type->signature; |
348e048f DE |
6821 | } |
6822 | ||
6823 | static int | |
52dc124a | 6824 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6825 | { |
9a3c8263 SM |
6826 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6827 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6828 | |
348e048f DE |
6829 | return lhs->signature == rhs->signature; |
6830 | } | |
6831 | ||
1fd400ff TT |
6832 | /* Allocate a hash table for signatured types. */ |
6833 | ||
6834 | static htab_t | |
673bfd45 | 6835 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6836 | { |
6837 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6838 | hash_signatured_type, |
6839 | eq_signatured_type, | |
1fd400ff TT |
6840 | NULL, |
6841 | &objfile->objfile_obstack, | |
6842 | hashtab_obstack_allocate, | |
6843 | dummy_obstack_deallocate); | |
6844 | } | |
6845 | ||
d467dd73 | 6846 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6847 | |
6848 | static int | |
d467dd73 | 6849 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6850 | { |
9a3c8263 SM |
6851 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
6852 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 6853 | |
b4dd5633 | 6854 | **datap = sigt; |
1fd400ff TT |
6855 | ++*datap; |
6856 | ||
6857 | return 1; | |
6858 | } | |
6859 | ||
78d4d2c5 | 6860 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6861 | and fill them into TYPES_HTAB. It will process only type units, |
6862 | therefore DW_UT_type. */ | |
c88ee1f0 | 6863 | |
78d4d2c5 JK |
6864 | static void |
6865 | create_debug_type_hash_table (struct dwo_file *dwo_file, | |
43988095 JK |
6866 | dwarf2_section_info *section, htab_t &types_htab, |
6867 | rcuh_kind section_kind) | |
348e048f | 6868 | { |
3019eac3 | 6869 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6870 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6871 | bfd *abfd; |
6872 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6873 | |
4bdcc0c1 DE |
6874 | abbrev_section = (dwo_file != NULL |
6875 | ? &dwo_file->sections.abbrev | |
6876 | : &dwarf2_per_objfile->abbrev); | |
6877 | ||
b4f54984 | 6878 | if (dwarf_read_debug) |
43988095 JK |
6879 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6880 | get_section_name (section), | |
a32a8923 | 6881 | get_section_file_name (abbrev_section)); |
09406207 | 6882 | |
78d4d2c5 JK |
6883 | dwarf2_read_section (objfile, section); |
6884 | info_ptr = section->buffer; | |
348e048f | 6885 | |
78d4d2c5 JK |
6886 | if (info_ptr == NULL) |
6887 | return; | |
348e048f | 6888 | |
78d4d2c5 JK |
6889 | /* We can't set abfd until now because the section may be empty or |
6890 | not present, in which case the bfd is unknown. */ | |
6891 | abfd = get_section_bfd_owner (section); | |
348e048f | 6892 | |
78d4d2c5 JK |
6893 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6894 | because we don't need to read any dies: the signature is in the | |
6895 | header. */ | |
3019eac3 | 6896 | |
78d4d2c5 JK |
6897 | end_ptr = info_ptr + section->size; |
6898 | while (info_ptr < end_ptr) | |
6899 | { | |
78d4d2c5 JK |
6900 | struct signatured_type *sig_type; |
6901 | struct dwo_unit *dwo_tu; | |
6902 | void **slot; | |
6903 | const gdb_byte *ptr = info_ptr; | |
6904 | struct comp_unit_head header; | |
6905 | unsigned int length; | |
8b70b953 | 6906 | |
9c541725 | 6907 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6908 | |
a49dd8dd JK |
6909 | /* Initialize it due to a false compiler warning. */ |
6910 | header.signature = -1; | |
9c541725 | 6911 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6912 | |
78d4d2c5 JK |
6913 | /* We need to read the type's signature in order to build the hash |
6914 | table, but we don't need anything else just yet. */ | |
348e048f | 6915 | |
43988095 JK |
6916 | ptr = read_and_check_comp_unit_head (&header, section, |
6917 | abbrev_section, ptr, section_kind); | |
348e048f | 6918 | |
78d4d2c5 | 6919 | length = get_cu_length (&header); |
6caca83c | 6920 | |
78d4d2c5 JK |
6921 | /* Skip dummy type units. */ |
6922 | if (ptr >= info_ptr + length | |
43988095 JK |
6923 | || peek_abbrev_code (abfd, ptr) == 0 |
6924 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6925 | { |
6926 | info_ptr += length; | |
6927 | continue; | |
6928 | } | |
dee91e82 | 6929 | |
78d4d2c5 JK |
6930 | if (types_htab == NULL) |
6931 | { | |
6932 | if (dwo_file) | |
6933 | types_htab = allocate_dwo_unit_table (objfile); | |
6934 | else | |
6935 | types_htab = allocate_signatured_type_table (objfile); | |
6936 | } | |
8b70b953 | 6937 | |
78d4d2c5 JK |
6938 | if (dwo_file) |
6939 | { | |
6940 | sig_type = NULL; | |
6941 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6942 | struct dwo_unit); | |
6943 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6944 | dwo_tu->signature = header.signature; |
9c541725 | 6945 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6946 | dwo_tu->section = section; |
9c541725 | 6947 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6948 | dwo_tu->length = length; |
6949 | } | |
6950 | else | |
6951 | { | |
6952 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6953 | The real type_offset is in the DWO file. */ | |
6954 | dwo_tu = NULL; | |
6955 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6956 | struct signatured_type); | |
43988095 | 6957 | sig_type->signature = header.signature; |
9c541725 | 6958 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6959 | sig_type->per_cu.objfile = objfile; |
6960 | sig_type->per_cu.is_debug_types = 1; | |
6961 | sig_type->per_cu.section = section; | |
9c541725 | 6962 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6963 | sig_type->per_cu.length = length; |
6964 | } | |
6965 | ||
6966 | slot = htab_find_slot (types_htab, | |
6967 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6968 | INSERT); | |
6969 | gdb_assert (slot != NULL); | |
6970 | if (*slot != NULL) | |
6971 | { | |
9c541725 | 6972 | sect_offset dup_sect_off; |
0349ea22 | 6973 | |
3019eac3 DE |
6974 | if (dwo_file) |
6975 | { | |
78d4d2c5 JK |
6976 | const struct dwo_unit *dup_tu |
6977 | = (const struct dwo_unit *) *slot; | |
6978 | ||
9c541725 | 6979 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6980 | } |
6981 | else | |
6982 | { | |
78d4d2c5 JK |
6983 | const struct signatured_type *dup_tu |
6984 | = (const struct signatured_type *) *slot; | |
6985 | ||
9c541725 | 6986 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6987 | } |
8b70b953 | 6988 | |
78d4d2c5 JK |
6989 | complaint (&symfile_complaints, |
6990 | _("debug type entry at offset 0x%x is duplicate to" | |
6991 | " the entry at offset 0x%x, signature %s"), | |
9c541725 | 6992 | to_underlying (sect_off), to_underlying (dup_sect_off), |
43988095 | 6993 | hex_string (header.signature)); |
78d4d2c5 JK |
6994 | } |
6995 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6996 | |
78d4d2c5 JK |
6997 | if (dwarf_read_debug > 1) |
6998 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", | |
9c541725 | 6999 | to_underlying (sect_off), |
43988095 | 7000 | hex_string (header.signature)); |
3019eac3 | 7001 | |
78d4d2c5 JK |
7002 | info_ptr += length; |
7003 | } | |
7004 | } | |
3019eac3 | 7005 | |
78d4d2c5 JK |
7006 | /* Create the hash table of all entries in the .debug_types |
7007 | (or .debug_types.dwo) section(s). | |
7008 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
7009 | otherwise it is NULL. | |
b3c8eb43 | 7010 | |
78d4d2c5 | 7011 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 7012 | |
78d4d2c5 | 7013 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 7014 | |
78d4d2c5 JK |
7015 | static void |
7016 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
7017 | VEC (dwarf2_section_info_def) *types, | |
7018 | htab_t &types_htab) | |
7019 | { | |
7020 | int ix; | |
7021 | struct dwarf2_section_info *section; | |
7022 | ||
7023 | if (VEC_empty (dwarf2_section_info_def, types)) | |
7024 | return; | |
348e048f | 7025 | |
78d4d2c5 JK |
7026 | for (ix = 0; |
7027 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
7028 | ++ix) | |
43988095 JK |
7029 | create_debug_type_hash_table (dwo_file, section, types_htab, |
7030 | rcuh_kind::TYPE); | |
3019eac3 DE |
7031 | } |
7032 | ||
7033 | /* Create the hash table of all entries in the .debug_types section, | |
7034 | and initialize all_type_units. | |
7035 | The result is zero if there is an error (e.g. missing .debug_types section), | |
7036 | otherwise non-zero. */ | |
7037 | ||
7038 | static int | |
7039 | create_all_type_units (struct objfile *objfile) | |
7040 | { | |
78d4d2c5 | 7041 | htab_t types_htab = NULL; |
b4dd5633 | 7042 | struct signatured_type **iter; |
3019eac3 | 7043 | |
43988095 JK |
7044 | create_debug_type_hash_table (NULL, &dwarf2_per_objfile->info, types_htab, |
7045 | rcuh_kind::COMPILE); | |
78d4d2c5 | 7046 | create_debug_types_hash_table (NULL, dwarf2_per_objfile->types, types_htab); |
3019eac3 DE |
7047 | if (types_htab == NULL) |
7048 | { | |
7049 | dwarf2_per_objfile->signatured_types = NULL; | |
7050 | return 0; | |
7051 | } | |
7052 | ||
348e048f DE |
7053 | dwarf2_per_objfile->signatured_types = types_htab; |
7054 | ||
6aa5f3a6 DE |
7055 | dwarf2_per_objfile->n_type_units |
7056 | = dwarf2_per_objfile->n_allocated_type_units | |
7057 | = htab_elements (types_htab); | |
8d749320 SM |
7058 | dwarf2_per_objfile->all_type_units = |
7059 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
7060 | iter = &dwarf2_per_objfile->all_type_units[0]; |
7061 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
7062 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
7063 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 7064 | |
348e048f DE |
7065 | return 1; |
7066 | } | |
7067 | ||
6aa5f3a6 DE |
7068 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
7069 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
7070 | Otherwise we find one. */ | |
7071 | ||
7072 | static struct signatured_type * | |
7073 | add_type_unit (ULONGEST sig, void **slot) | |
7074 | { | |
7075 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7076 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
7077 | struct signatured_type *sig_type; | |
7078 | ||
7079 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
7080 | ++n_type_units; | |
7081 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
7082 | { | |
7083 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
7084 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
7085 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
7086 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
7087 | = XRESIZEVEC (struct signatured_type *, |
7088 | dwarf2_per_objfile->all_type_units, | |
7089 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
7090 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
7091 | } | |
7092 | dwarf2_per_objfile->n_type_units = n_type_units; | |
7093 | ||
7094 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7095 | struct signatured_type); | |
7096 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
7097 | sig_type->signature = sig; | |
7098 | sig_type->per_cu.is_debug_types = 1; | |
7099 | if (dwarf2_per_objfile->using_index) | |
7100 | { | |
7101 | sig_type->per_cu.v.quick = | |
7102 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7103 | struct dwarf2_per_cu_quick_data); | |
7104 | } | |
7105 | ||
7106 | if (slot == NULL) | |
7107 | { | |
7108 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7109 | sig_type, INSERT); | |
7110 | } | |
7111 | gdb_assert (*slot == NULL); | |
7112 | *slot = sig_type; | |
7113 | /* The rest of sig_type must be filled in by the caller. */ | |
7114 | return sig_type; | |
7115 | } | |
7116 | ||
a2ce51a0 DE |
7117 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
7118 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
7119 | ||
7120 | static void | |
7121 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
7122 | struct signatured_type *sig_entry, | |
7123 | struct dwo_unit *dwo_entry) | |
7124 | { | |
7ee85ab1 | 7125 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
7126 | gdb_assert (! sig_entry->per_cu.queued); |
7127 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
7128 | if (dwarf2_per_objfile->using_index) |
7129 | { | |
7130 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 7131 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
7132 | } |
7133 | else | |
7134 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 7135 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 7136 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 7137 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
7138 | gdb_assert (sig_entry->dwo_unit == NULL); |
7139 | ||
7140 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 7141 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
7142 | sig_entry->per_cu.length = dwo_entry->length; |
7143 | sig_entry->per_cu.reading_dwo_directly = 1; | |
7144 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
7145 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
7146 | sig_entry->dwo_unit = dwo_entry; | |
7147 | } | |
7148 | ||
7149 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
7150 | If we haven't read the TU yet, create the signatured_type data structure |
7151 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
7152 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
7153 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
7154 | containing that CU. Otherwise we could end up reading several other DWO | |
7155 | files (due to comdat folding) to process the transitive closure of all the | |
7156 | mentioned TUs, and that can be slow. The current DWO file will have every | |
7157 | type signature that it needs. | |
a2ce51a0 DE |
7158 | We only do this for .gdb_index because in the psymtab case we already have |
7159 | to read all the DWOs to build the type unit groups. */ | |
7160 | ||
7161 | static struct signatured_type * | |
7162 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7163 | { | |
7164 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7165 | struct dwo_file *dwo_file; | |
7166 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
7167 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7168 | void **slot; |
a2ce51a0 DE |
7169 | |
7170 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7171 | ||
6aa5f3a6 DE |
7172 | /* If TU skeletons have been removed then we may not have read in any |
7173 | TUs yet. */ | |
7174 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7175 | { | |
7176 | dwarf2_per_objfile->signatured_types | |
7177 | = allocate_signatured_type_table (objfile); | |
7178 | } | |
a2ce51a0 DE |
7179 | |
7180 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7181 | Use the global signatured_types array to do our own comdat-folding |
7182 | of types. If this is the first time we're reading this TU, and | |
7183 | the TU has an entry in .gdb_index, replace the recorded data from | |
7184 | .gdb_index with this TU. */ | |
a2ce51a0 | 7185 | |
a2ce51a0 | 7186 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7187 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7188 | &find_sig_entry, INSERT); | |
9a3c8263 | 7189 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7190 | |
7191 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7192 | read. Don't reassign the global entry to point to this DWO if that's |
7193 | the case. Also note that if the TU is already being read, it may not | |
7194 | have come from a DWO, the program may be a mix of Fission-compiled | |
7195 | code and non-Fission-compiled code. */ | |
7196 | ||
7197 | /* Have we already tried to read this TU? | |
7198 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7199 | needn't exist in the global table yet). */ | |
7200 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7201 | return sig_entry; |
7202 | ||
6aa5f3a6 DE |
7203 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7204 | dwo_unit of the TU itself. */ | |
7205 | dwo_file = cu->dwo_unit->dwo_file; | |
7206 | ||
a2ce51a0 DE |
7207 | /* Ok, this is the first time we're reading this TU. */ |
7208 | if (dwo_file->tus == NULL) | |
7209 | return NULL; | |
7210 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7211 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7212 | if (dwo_entry == NULL) |
7213 | return NULL; | |
7214 | ||
6aa5f3a6 DE |
7215 | /* If the global table doesn't have an entry for this TU, add one. */ |
7216 | if (sig_entry == NULL) | |
7217 | sig_entry = add_type_unit (sig, slot); | |
7218 | ||
a2ce51a0 | 7219 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 7220 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7221 | return sig_entry; |
7222 | } | |
7223 | ||
a2ce51a0 DE |
7224 | /* Subroutine of lookup_signatured_type. |
7225 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7226 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7227 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7228 | |
7229 | static struct signatured_type * | |
7230 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7231 | { | |
7232 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7233 | struct dwp_file *dwp_file = get_dwp_file (); | |
7234 | struct dwo_unit *dwo_entry; | |
7235 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7236 | void **slot; |
a2ce51a0 DE |
7237 | |
7238 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7239 | gdb_assert (dwp_file != NULL); | |
7240 | ||
6aa5f3a6 DE |
7241 | /* If TU skeletons have been removed then we may not have read in any |
7242 | TUs yet. */ | |
7243 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7244 | { |
6aa5f3a6 DE |
7245 | dwarf2_per_objfile->signatured_types |
7246 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7247 | } |
7248 | ||
6aa5f3a6 DE |
7249 | find_sig_entry.signature = sig; |
7250 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7251 | &find_sig_entry, INSERT); | |
9a3c8263 | 7252 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7253 | |
7254 | /* Have we already tried to read this TU? | |
7255 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7256 | needn't exist in the global table yet). */ | |
7257 | if (sig_entry != NULL) | |
7258 | return sig_entry; | |
7259 | ||
a2ce51a0 DE |
7260 | if (dwp_file->tus == NULL) |
7261 | return NULL; | |
57d63ce2 DE |
7262 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
7263 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
7264 | if (dwo_entry == NULL) |
7265 | return NULL; | |
7266 | ||
6aa5f3a6 | 7267 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
7268 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
7269 | ||
a2ce51a0 DE |
7270 | return sig_entry; |
7271 | } | |
7272 | ||
380bca97 | 7273 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7274 | Returns NULL if signature SIG is not present in the table. |
7275 | It is up to the caller to complain about this. */ | |
348e048f DE |
7276 | |
7277 | static struct signatured_type * | |
a2ce51a0 | 7278 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7279 | { |
a2ce51a0 DE |
7280 | if (cu->dwo_unit |
7281 | && dwarf2_per_objfile->using_index) | |
7282 | { | |
7283 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7284 | These cases require special processing. */ | |
7285 | if (get_dwp_file () == NULL) | |
7286 | return lookup_dwo_signatured_type (cu, sig); | |
7287 | else | |
7288 | return lookup_dwp_signatured_type (cu, sig); | |
7289 | } | |
7290 | else | |
7291 | { | |
7292 | struct signatured_type find_entry, *entry; | |
348e048f | 7293 | |
a2ce51a0 DE |
7294 | if (dwarf2_per_objfile->signatured_types == NULL) |
7295 | return NULL; | |
7296 | find_entry.signature = sig; | |
9a3c8263 SM |
7297 | entry = ((struct signatured_type *) |
7298 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7299 | return entry; |
7300 | } | |
348e048f | 7301 | } |
42e7ad6c DE |
7302 | \f |
7303 | /* Low level DIE reading support. */ | |
348e048f | 7304 | |
d85a05f0 DJ |
7305 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7306 | ||
7307 | static void | |
7308 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7309 | struct dwarf2_cu *cu, |
3019eac3 DE |
7310 | struct dwarf2_section_info *section, |
7311 | struct dwo_file *dwo_file) | |
d85a05f0 | 7312 | { |
fceca515 | 7313 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7314 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7315 | reader->cu = cu; |
3019eac3 | 7316 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7317 | reader->die_section = section; |
7318 | reader->buffer = section->buffer; | |
f664829e | 7319 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7320 | reader->comp_dir = NULL; |
d85a05f0 DJ |
7321 | } |
7322 | ||
b0c7bfa9 DE |
7323 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7324 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7325 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7326 | already. | |
7327 | ||
7328 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7329 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7330 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7331 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7332 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7333 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7334 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7335 | are filled in with the info of the DIE from the DWO file. | |
7336 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
7337 | provided an abbrev table to use. | |
7338 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
7339 | ||
7340 | static int | |
7341 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7342 | struct dwo_unit *dwo_unit, | |
7343 | int abbrev_table_provided, | |
7344 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 7345 | const char *stub_comp_dir, |
b0c7bfa9 | 7346 | struct die_reader_specs *result_reader, |
d521ce57 | 7347 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
7348 | struct die_info **result_comp_unit_die, |
7349 | int *result_has_children) | |
7350 | { | |
7351 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7352 | struct dwarf2_cu *cu = this_cu->cu; | |
7353 | struct dwarf2_section_info *section; | |
7354 | bfd *abfd; | |
d521ce57 | 7355 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7356 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7357 | int i,num_extra_attrs; | |
7358 | struct dwarf2_section_info *dwo_abbrev_section; | |
7359 | struct attribute *attr; | |
7360 | struct die_info *comp_unit_die; | |
7361 | ||
b0aeadb3 DE |
7362 | /* At most one of these may be provided. */ |
7363 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7364 | |
b0c7bfa9 DE |
7365 | /* These attributes aren't processed until later: |
7366 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7367 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7368 | referenced later. However, these attributes are found in the stub | |
7369 | which we won't have later. In order to not impose this complication | |
7370 | on the rest of the code, we read them here and copy them to the | |
7371 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7372 | |
7373 | stmt_list = NULL; | |
7374 | low_pc = NULL; | |
7375 | high_pc = NULL; | |
7376 | ranges = NULL; | |
7377 | comp_dir = NULL; | |
7378 | ||
7379 | if (stub_comp_unit_die != NULL) | |
7380 | { | |
7381 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7382 | DWO file. */ | |
7383 | if (! this_cu->is_debug_types) | |
7384 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7385 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7386 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7387 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7388 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7389 | ||
7390 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7391 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7392 | cu->addr_base = 0; | |
7393 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7394 | if (attr) | |
7395 | cu->addr_base = DW_UNSND (attr); | |
7396 | ||
7397 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7398 | We need the value before we can process DW_AT_ranges. */ | |
7399 | cu->ranges_base = 0; | |
7400 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7401 | if (attr) | |
7402 | cu->ranges_base = DW_UNSND (attr); | |
7403 | } | |
a2ce51a0 DE |
7404 | else if (stub_comp_dir != NULL) |
7405 | { | |
7406 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7407 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7408 | comp_dir->name = DW_AT_comp_dir; |
7409 | comp_dir->form = DW_FORM_string; | |
7410 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7411 | DW_STRING (comp_dir) = stub_comp_dir; | |
7412 | } | |
b0c7bfa9 DE |
7413 | |
7414 | /* Set up for reading the DWO CU/TU. */ | |
7415 | cu->dwo_unit = dwo_unit; | |
7416 | section = dwo_unit->section; | |
7417 | dwarf2_read_section (objfile, section); | |
a32a8923 | 7418 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7419 | begin_info_ptr = info_ptr = (section->buffer |
7420 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 DE |
7421 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
7422 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
7423 | ||
7424 | if (this_cu->is_debug_types) | |
7425 | { | |
b0c7bfa9 DE |
7426 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7427 | ||
43988095 | 7428 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
b0c7bfa9 | 7429 | dwo_abbrev_section, |
43988095 | 7430 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7431 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7432 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7433 | { |
7434 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
7435 | " TU at offset 0x%x [in module %s]"), | |
7436 | hex_string (sig_type->signature), | |
43988095 | 7437 | hex_string (cu->header.signature), |
9c541725 | 7438 | to_underlying (dwo_unit->sect_off), |
a2ce51a0 DE |
7439 | bfd_get_filename (abfd)); |
7440 | } | |
9c541725 | 7441 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7442 | /* For DWOs coming from DWP files, we don't know the CU length |
7443 | nor the type's offset in the TU until now. */ | |
7444 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7445 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7446 | |
7447 | /* Establish the type offset that can be used to lookup the type. | |
7448 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7449 | sig_type->type_offset_in_section |
7450 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7451 | } |
7452 | else | |
7453 | { | |
7454 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
7455 | dwo_abbrev_section, | |
43988095 | 7456 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7457 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7458 | /* For DWOs coming from DWP files, we don't know the CU length |
7459 | until now. */ | |
7460 | dwo_unit->length = get_cu_length (&cu->header); | |
7461 | } | |
7462 | ||
02142a6c DE |
7463 | /* Replace the CU's original abbrev table with the DWO's. |
7464 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
7465 | if (abbrev_table_provided) |
7466 | { | |
7467 | /* Don't free the provided abbrev table, the caller of | |
7468 | init_cutu_and_read_dies owns it. */ | |
7469 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 7470 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
7471 | make_cleanup (dwarf2_free_abbrev_table, cu); |
7472 | } | |
7473 | else | |
7474 | { | |
7475 | dwarf2_free_abbrev_table (cu); | |
7476 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 7477 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
7478 | } |
7479 | ||
7480 | /* Read in the die, but leave space to copy over the attributes | |
7481 | from the stub. This has the benefit of simplifying the rest of | |
7482 | the code - all the work to maintain the illusion of a single | |
7483 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7484 | num_extra_attrs = ((stmt_list != NULL) | |
7485 | + (low_pc != NULL) | |
7486 | + (high_pc != NULL) | |
7487 | + (ranges != NULL) | |
7488 | + (comp_dir != NULL)); | |
7489 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7490 | result_has_children, num_extra_attrs); | |
7491 | ||
7492 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7493 | comp_unit_die = *result_comp_unit_die; | |
7494 | i = comp_unit_die->num_attrs; | |
7495 | if (stmt_list != NULL) | |
7496 | comp_unit_die->attrs[i++] = *stmt_list; | |
7497 | if (low_pc != NULL) | |
7498 | comp_unit_die->attrs[i++] = *low_pc; | |
7499 | if (high_pc != NULL) | |
7500 | comp_unit_die->attrs[i++] = *high_pc; | |
7501 | if (ranges != NULL) | |
7502 | comp_unit_die->attrs[i++] = *ranges; | |
7503 | if (comp_dir != NULL) | |
7504 | comp_unit_die->attrs[i++] = *comp_dir; | |
7505 | comp_unit_die->num_attrs += num_extra_attrs; | |
7506 | ||
b4f54984 | 7507 | if (dwarf_die_debug) |
bf6af496 DE |
7508 | { |
7509 | fprintf_unfiltered (gdb_stdlog, | |
7510 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7511 | get_section_name (section), |
bf6af496 DE |
7512 | (unsigned) (begin_info_ptr - section->buffer), |
7513 | bfd_get_filename (abfd)); | |
b4f54984 | 7514 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7515 | } |
7516 | ||
a2ce51a0 DE |
7517 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7518 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7519 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7520 | to get it via circuitous means. Blech. */ | |
7521 | if (comp_dir != NULL) | |
7522 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7523 | ||
b0c7bfa9 DE |
7524 | /* Skip dummy compilation units. */ |
7525 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7526 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7527 | return 0; | |
7528 | ||
7529 | *result_info_ptr = info_ptr; | |
7530 | return 1; | |
7531 | } | |
7532 | ||
7533 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7534 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7535 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7536 | |
7537 | static struct dwo_unit * | |
7538 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7539 | struct die_info *comp_unit_die) | |
7540 | { | |
7541 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7542 | ULONGEST signature; |
7543 | struct dwo_unit *dwo_unit; | |
7544 | const char *comp_dir, *dwo_name; | |
7545 | ||
a2ce51a0 DE |
7546 | gdb_assert (cu != NULL); |
7547 | ||
b0c7bfa9 | 7548 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7549 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7550 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7551 | |
7552 | if (this_cu->is_debug_types) | |
7553 | { | |
7554 | struct signatured_type *sig_type; | |
7555 | ||
7556 | /* Since this_cu is the first member of struct signatured_type, | |
7557 | we can go from a pointer to one to a pointer to the other. */ | |
7558 | sig_type = (struct signatured_type *) this_cu; | |
7559 | signature = sig_type->signature; | |
7560 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7561 | } | |
7562 | else | |
7563 | { | |
7564 | struct attribute *attr; | |
7565 | ||
7566 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7567 | if (! attr) | |
7568 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7569 | " [in module %s]"), | |
4262abfb | 7570 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
7571 | signature = DW_UNSND (attr); |
7572 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7573 | signature); | |
7574 | } | |
7575 | ||
b0c7bfa9 DE |
7576 | return dwo_unit; |
7577 | } | |
7578 | ||
a2ce51a0 | 7579 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
7580 | See it for a description of the parameters. |
7581 | Read a TU directly from a DWO file, bypassing the stub. | |
7582 | ||
7583 | Note: This function could be a little bit simpler if we shared cleanups | |
7584 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
7585 | to do, so we keep this function self-contained. Or we could move this | |
7586 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
7587 | |
7588 | static void | |
6aa5f3a6 DE |
7589 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7590 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7591 | die_reader_func_ftype *die_reader_func, |
7592 | void *data) | |
7593 | { | |
7594 | struct dwarf2_cu *cu; | |
7595 | struct signatured_type *sig_type; | |
6aa5f3a6 | 7596 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
7597 | struct die_reader_specs reader; |
7598 | const gdb_byte *info_ptr; | |
7599 | struct die_info *comp_unit_die; | |
7600 | int has_children; | |
7601 | ||
7602 | /* Verify we can do the following downcast, and that we have the | |
7603 | data we need. */ | |
7604 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7605 | sig_type = (struct signatured_type *) this_cu; | |
7606 | gdb_assert (sig_type->dwo_unit != NULL); | |
7607 | ||
7608 | cleanups = make_cleanup (null_cleanup, NULL); | |
7609 | ||
6aa5f3a6 DE |
7610 | if (use_existing_cu && this_cu->cu != NULL) |
7611 | { | |
7612 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
7613 | cu = this_cu->cu; | |
7614 | /* There's no need to do the rereading_dwo_cu handling that | |
7615 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7616 | } | |
7617 | else | |
7618 | { | |
7619 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7620 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 7621 | cu = XNEW (struct dwarf2_cu); |
6aa5f3a6 DE |
7622 | init_one_comp_unit (cu, this_cu); |
7623 | /* If an error occurs while loading, release our storage. */ | |
7624 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
7625 | } | |
7626 | ||
7627 | /* A future optimization, if needed, would be to use an existing | |
7628 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7629 | could share abbrev tables. */ | |
a2ce51a0 DE |
7630 | |
7631 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
7632 | 0 /* abbrev_table_provided */, | |
7633 | NULL /* stub_comp_unit_die */, | |
7634 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7635 | &reader, &info_ptr, | |
7636 | &comp_unit_die, &has_children) == 0) | |
7637 | { | |
7638 | /* Dummy die. */ | |
7639 | do_cleanups (cleanups); | |
7640 | return; | |
7641 | } | |
7642 | ||
7643 | /* All the "real" work is done here. */ | |
7644 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7645 | ||
6aa5f3a6 | 7646 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7647 | but the alternative is making the latter more complex. |
7648 | This function is only for the special case of using DWO files directly: | |
7649 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 7650 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 7651 | { |
6aa5f3a6 DE |
7652 | if (keep) |
7653 | { | |
7654 | /* We've successfully allocated this compilation unit. Let our | |
7655 | caller clean it up when finished with it. */ | |
7656 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 7657 | |
6aa5f3a6 DE |
7658 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
7659 | So we have to manually free the abbrev table. */ | |
7660 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 7661 | |
6aa5f3a6 DE |
7662 | /* Link this CU into read_in_chain. */ |
7663 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7664 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7665 | } | |
7666 | else | |
7667 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 7668 | } |
a2ce51a0 DE |
7669 | |
7670 | do_cleanups (cleanups); | |
7671 | } | |
7672 | ||
fd820528 | 7673 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7674 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7675 | |
f4dc4d17 DE |
7676 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7677 | Otherwise the table specified in the comp unit header is read in and used. | |
7678 | This is an optimization for when we already have the abbrev table. | |
7679 | ||
dee91e82 DE |
7680 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7681 | Otherwise, a new CU is allocated with xmalloc. | |
7682 | ||
7683 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7684 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7685 | ||
7686 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7687 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7688 | |
70221824 | 7689 | static void |
fd820528 | 7690 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7691 | struct abbrev_table *abbrev_table, |
fd820528 DE |
7692 | int use_existing_cu, int keep, |
7693 | die_reader_func_ftype *die_reader_func, | |
7694 | void *data) | |
c906108c | 7695 | { |
dee91e82 | 7696 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7697 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7698 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7699 | struct dwarf2_cu *cu; |
d521ce57 | 7700 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7701 | struct die_reader_specs reader; |
d85a05f0 | 7702 | struct die_info *comp_unit_die; |
dee91e82 | 7703 | int has_children; |
d85a05f0 | 7704 | struct attribute *attr; |
365156ad | 7705 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 7706 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7707 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7708 | /* Non-zero if CU currently points to a DWO file and we need to |
7709 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7710 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7711 | int rereading_dwo_cu = 0; |
c906108c | 7712 | |
b4f54984 | 7713 | if (dwarf_die_debug) |
09406207 DE |
7714 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
7715 | this_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 7716 | to_underlying (this_cu->sect_off)); |
09406207 | 7717 | |
dee91e82 DE |
7718 | if (use_existing_cu) |
7719 | gdb_assert (keep); | |
23745b47 | 7720 | |
a2ce51a0 DE |
7721 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7722 | file (instead of going through the stub), short-circuit all of this. */ | |
7723 | if (this_cu->reading_dwo_directly) | |
7724 | { | |
7725 | /* Narrow down the scope of possibilities to have to understand. */ | |
7726 | gdb_assert (this_cu->is_debug_types); | |
7727 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7728 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7729 | die_reader_func, data); | |
a2ce51a0 DE |
7730 | return; |
7731 | } | |
7732 | ||
dee91e82 DE |
7733 | cleanups = make_cleanup (null_cleanup, NULL); |
7734 | ||
7735 | /* This is cheap if the section is already read in. */ | |
7736 | dwarf2_read_section (objfile, section); | |
7737 | ||
9c541725 | 7738 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7739 | |
7740 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
7741 | |
7742 | if (use_existing_cu && this_cu->cu != NULL) | |
7743 | { | |
7744 | cu = this_cu->cu; | |
42e7ad6c DE |
7745 | /* If this CU is from a DWO file we need to start over, we need to |
7746 | refetch the attributes from the skeleton CU. | |
7747 | This could be optimized by retrieving those attributes from when we | |
7748 | were here the first time: the previous comp_unit_die was stored in | |
7749 | comp_unit_obstack. But there's no data yet that we need this | |
7750 | optimization. */ | |
7751 | if (cu->dwo_unit != NULL) | |
7752 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7753 | } |
7754 | else | |
7755 | { | |
7756 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7757 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 7758 | cu = XNEW (struct dwarf2_cu); |
dee91e82 | 7759 | init_one_comp_unit (cu, this_cu); |
dee91e82 | 7760 | /* If an error occurs while loading, release our storage. */ |
365156ad | 7761 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 7762 | } |
dee91e82 | 7763 | |
b0c7bfa9 | 7764 | /* Get the header. */ |
9c541725 | 7765 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7766 | { |
7767 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7768 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7769 | } |
7770 | else | |
7771 | { | |
3019eac3 | 7772 | if (this_cu->is_debug_types) |
dee91e82 | 7773 | { |
43988095 | 7774 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4bdcc0c1 | 7775 | abbrev_section, info_ptr, |
43988095 | 7776 | rcuh_kind::TYPE); |
dee91e82 | 7777 | |
42e7ad6c DE |
7778 | /* Since per_cu is the first member of struct signatured_type, |
7779 | we can go from a pointer to one to a pointer to the other. */ | |
7780 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7781 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7782 | gdb_assert (sig_type->type_offset_in_tu |
7783 | == cu->header.type_cu_offset_in_tu); | |
7784 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7785 | |
42e7ad6c DE |
7786 | /* LENGTH has not been set yet for type units if we're |
7787 | using .gdb_index. */ | |
1ce1cefd | 7788 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7789 | |
7790 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7791 | sig_type->type_offset_in_section = |
7792 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7793 | |
7794 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7795 | } |
7796 | else | |
7797 | { | |
4bdcc0c1 DE |
7798 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
7799 | abbrev_section, | |
43988095 JK |
7800 | info_ptr, |
7801 | rcuh_kind::COMPILE); | |
dee91e82 | 7802 | |
9c541725 | 7803 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7804 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7805 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7806 | } |
7807 | } | |
10b3939b | 7808 | |
6caca83c | 7809 | /* Skip dummy compilation units. */ |
dee91e82 | 7810 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
7811 | || peek_abbrev_code (abfd, info_ptr) == 0) |
7812 | { | |
dee91e82 | 7813 | do_cleanups (cleanups); |
21b2bd31 | 7814 | return; |
6caca83c CC |
7815 | } |
7816 | ||
433df2d4 DE |
7817 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7818 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
7819 | done. Note that it's important that if the CU had an abbrev table |
7820 | on entry we don't free it when we're done: Somewhere up the call stack | |
7821 | it may be in use. */ | |
f4dc4d17 DE |
7822 | if (abbrev_table != NULL) |
7823 | { | |
7824 | gdb_assert (cu->abbrev_table == NULL); | |
9c541725 | 7825 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
f4dc4d17 DE |
7826 | cu->abbrev_table = abbrev_table; |
7827 | } | |
7828 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 7829 | { |
4bdcc0c1 | 7830 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
7831 | make_cleanup (dwarf2_free_abbrev_table, cu); |
7832 | } | |
42e7ad6c DE |
7833 | else if (rereading_dwo_cu) |
7834 | { | |
7835 | dwarf2_free_abbrev_table (cu); | |
7836 | dwarf2_read_abbrevs (cu, abbrev_section); | |
7837 | } | |
af703f96 | 7838 | |
dee91e82 | 7839 | /* Read the top level CU/TU die. */ |
3019eac3 | 7840 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 7841 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7842 | |
b0c7bfa9 DE |
7843 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
7844 | from the DWO file. | |
7845 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
7846 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
7847 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7848 | if (attr) | |
7849 | { | |
3019eac3 | 7850 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7851 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7852 | |
7853 | if (has_children) | |
6a506a2d DE |
7854 | { |
7855 | complaint (&symfile_complaints, | |
7856 | _("compilation unit with DW_AT_GNU_dwo_name" | |
7857 | " has children (offset 0x%x) [in module %s]"), | |
9c541725 | 7858 | to_underlying (this_cu->sect_off), bfd_get_filename (abfd)); |
6a506a2d | 7859 | } |
b0c7bfa9 | 7860 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7861 | if (dwo_unit != NULL) |
3019eac3 | 7862 | { |
6a506a2d DE |
7863 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
7864 | abbrev_table != NULL, | |
a2ce51a0 | 7865 | comp_unit_die, NULL, |
6a506a2d DE |
7866 | &reader, &info_ptr, |
7867 | &dwo_comp_unit_die, &has_children) == 0) | |
7868 | { | |
7869 | /* Dummy die. */ | |
7870 | do_cleanups (cleanups); | |
7871 | return; | |
7872 | } | |
7873 | comp_unit_die = dwo_comp_unit_die; | |
7874 | } | |
7875 | else | |
7876 | { | |
7877 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7878 | the stub. A complaint has already been logged. There's | |
7879 | not much more we can do except pass on the stub DIE to | |
7880 | die_reader_func. We don't want to throw an error on bad | |
7881 | debug info. */ | |
3019eac3 DE |
7882 | } |
7883 | } | |
7884 | ||
b0c7bfa9 | 7885 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7886 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7887 | ||
b0c7bfa9 | 7888 | /* Done, clean up. */ |
365156ad | 7889 | if (free_cu_cleanup != NULL) |
348e048f | 7890 | { |
365156ad TT |
7891 | if (keep) |
7892 | { | |
7893 | /* We've successfully allocated this compilation unit. Let our | |
7894 | caller clean it up when finished with it. */ | |
7895 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 7896 | |
365156ad TT |
7897 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
7898 | So we have to manually free the abbrev table. */ | |
7899 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 7900 | |
365156ad TT |
7901 | /* Link this CU into read_in_chain. */ |
7902 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7903 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7904 | } | |
7905 | else | |
7906 | do_cleanups (free_cu_cleanup); | |
348e048f | 7907 | } |
365156ad TT |
7908 | |
7909 | do_cleanups (cleanups); | |
dee91e82 DE |
7910 | } |
7911 | ||
33e80786 DE |
7912 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7913 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7914 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7915 | |
7916 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7917 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7918 | |
7919 | We fill in THIS_CU->length. | |
7920 | ||
7921 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7922 | linker) then DIE_READER_FUNC will not get called. | |
7923 | ||
7924 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7925 | This is done in order to not leave THIS_CU->cu in a state where we have |
7926 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7927 | |
7928 | static void | |
7929 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7930 | struct dwo_file *dwo_file, |
dee91e82 DE |
7931 | die_reader_func_ftype *die_reader_func, |
7932 | void *data) | |
7933 | { | |
7934 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 7935 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7936 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7937 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 7938 | struct dwarf2_cu cu; |
d521ce57 | 7939 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
7940 | struct die_reader_specs reader; |
7941 | struct cleanup *cleanups; | |
7942 | struct die_info *comp_unit_die; | |
7943 | int has_children; | |
7944 | ||
b4f54984 | 7945 | if (dwarf_die_debug) |
09406207 DE |
7946 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
7947 | this_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 7948 | to_underlying (this_cu->sect_off)); |
09406207 | 7949 | |
dee91e82 DE |
7950 | gdb_assert (this_cu->cu == NULL); |
7951 | ||
33e80786 DE |
7952 | abbrev_section = (dwo_file != NULL |
7953 | ? &dwo_file->sections.abbrev | |
7954 | : get_abbrev_section_for_cu (this_cu)); | |
7955 | ||
dee91e82 DE |
7956 | /* This is cheap if the section is already read in. */ |
7957 | dwarf2_read_section (objfile, section); | |
7958 | ||
7959 | init_one_comp_unit (&cu, this_cu); | |
7960 | ||
7961 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
7962 | ||
9c541725 | 7963 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
4bdcc0c1 DE |
7964 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
7965 | abbrev_section, info_ptr, | |
43988095 JK |
7966 | (this_cu->is_debug_types |
7967 | ? rcuh_kind::TYPE | |
7968 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7969 | |
1ce1cefd | 7970 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7971 | |
7972 | /* Skip dummy compilation units. */ | |
7973 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7974 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 7975 | { |
dee91e82 | 7976 | do_cleanups (cleanups); |
21b2bd31 | 7977 | return; |
93311388 | 7978 | } |
72bf9492 | 7979 | |
dee91e82 DE |
7980 | dwarf2_read_abbrevs (&cu, abbrev_section); |
7981 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
7982 | ||
3019eac3 | 7983 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
7984 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7985 | ||
7986 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7987 | ||
7988 | do_cleanups (cleanups); | |
7989 | } | |
7990 | ||
3019eac3 DE |
7991 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7992 | does not lookup the specified DWO file. | |
7993 | This cannot be used to read DWO files. | |
dee91e82 DE |
7994 | |
7995 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7996 | This is done in order to not leave THIS_CU->cu in a state where we have |
7997 | to care whether it refers to the "main" CU or the DWO CU. | |
7998 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7999 | |
8000 | static void | |
8001 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
8002 | die_reader_func_ftype *die_reader_func, | |
8003 | void *data) | |
8004 | { | |
33e80786 | 8005 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 8006 | } |
0018ea6f DE |
8007 | \f |
8008 | /* Type Unit Groups. | |
dee91e82 | 8009 | |
0018ea6f DE |
8010 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
8011 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
8012 | so that all types coming from the same compilation (.o file) are grouped | |
8013 | together. A future step could be to put the types in the same symtab as | |
8014 | the CU the types ultimately came from. */ | |
ff013f42 | 8015 | |
f4dc4d17 DE |
8016 | static hashval_t |
8017 | hash_type_unit_group (const void *item) | |
8018 | { | |
9a3c8263 SM |
8019 | const struct type_unit_group *tu_group |
8020 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 8021 | |
094b34ac | 8022 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 8023 | } |
348e048f DE |
8024 | |
8025 | static int | |
f4dc4d17 | 8026 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 8027 | { |
9a3c8263 SM |
8028 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
8029 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 8030 | |
094b34ac | 8031 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 8032 | } |
348e048f | 8033 | |
f4dc4d17 DE |
8034 | /* Allocate a hash table for type unit groups. */ |
8035 | ||
8036 | static htab_t | |
8037 | allocate_type_unit_groups_table (void) | |
8038 | { | |
8039 | return htab_create_alloc_ex (3, | |
8040 | hash_type_unit_group, | |
8041 | eq_type_unit_group, | |
8042 | NULL, | |
8043 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
8044 | hashtab_obstack_allocate, | |
8045 | dummy_obstack_deallocate); | |
8046 | } | |
dee91e82 | 8047 | |
f4dc4d17 DE |
8048 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
8049 | partial symtabs. We combine several TUs per psymtab to not let the size | |
8050 | of any one psymtab grow too big. */ | |
8051 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
8052 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 8053 | |
094b34ac | 8054 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
8055 | Create the type_unit_group object used to hold one or more TUs. */ |
8056 | ||
8057 | static struct type_unit_group * | |
094b34ac | 8058 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
8059 | { |
8060 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 8061 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 8062 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
8063 | |
8064 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8065 | struct type_unit_group); | |
094b34ac | 8066 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 8067 | per_cu->objfile = objfile; |
f4dc4d17 | 8068 | |
094b34ac DE |
8069 | if (dwarf2_per_objfile->using_index) |
8070 | { | |
8071 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8072 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
8073 | } |
8074 | else | |
8075 | { | |
9c541725 | 8076 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
8077 | struct partial_symtab *pst; |
8078 | char *name; | |
8079 | ||
8080 | /* Give the symtab a useful name for debug purposes. */ | |
8081 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
8082 | name = xstrprintf ("<type_units_%d>", | |
8083 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
8084 | else | |
8085 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
8086 | ||
8087 | pst = create_partial_symtab (per_cu, name); | |
8088 | pst->anonymous = 1; | |
f4dc4d17 | 8089 | |
094b34ac DE |
8090 | xfree (name); |
8091 | } | |
f4dc4d17 | 8092 | |
094b34ac | 8093 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8094 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
8095 | |
8096 | return tu_group; | |
8097 | } | |
8098 | ||
094b34ac DE |
8099 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
8100 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
8101 | |
8102 | static struct type_unit_group * | |
ff39bb5e | 8103 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
8104 | { |
8105 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8106 | struct type_unit_group *tu_group; | |
8107 | void **slot; | |
8108 | unsigned int line_offset; | |
8109 | struct type_unit_group type_unit_group_for_lookup; | |
8110 | ||
8111 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
8112 | { | |
8113 | dwarf2_per_objfile->type_unit_groups = | |
8114 | allocate_type_unit_groups_table (); | |
8115 | } | |
8116 | ||
8117 | /* Do we need to create a new group, or can we use an existing one? */ | |
8118 | ||
8119 | if (stmt_list) | |
8120 | { | |
8121 | line_offset = DW_UNSND (stmt_list); | |
8122 | ++tu_stats->nr_symtab_sharers; | |
8123 | } | |
8124 | else | |
8125 | { | |
8126 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
8127 | We can do various things here like create one group per TU or | |
8128 | spread them over multiple groups to split up the expansion work. | |
8129 | To avoid worst case scenarios (too many groups or too large groups) | |
8130 | we, umm, group them in bunches. */ | |
8131 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
8132 | | (tu_stats->nr_stmt_less_type_units | |
8133 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
8134 | ++tu_stats->nr_stmt_less_type_units; | |
8135 | } | |
8136 | ||
094b34ac | 8137 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8138 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
8139 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
8140 | &type_unit_group_for_lookup, INSERT); | |
8141 | if (*slot != NULL) | |
8142 | { | |
9a3c8263 | 8143 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
8144 | gdb_assert (tu_group != NULL); |
8145 | } | |
8146 | else | |
8147 | { | |
9c541725 | 8148 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 8149 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
8150 | *slot = tu_group; |
8151 | ++tu_stats->nr_symtabs; | |
8152 | } | |
8153 | ||
8154 | return tu_group; | |
8155 | } | |
0018ea6f DE |
8156 | \f |
8157 | /* Partial symbol tables. */ | |
8158 | ||
8159 | /* Create a psymtab named NAME and assign it to PER_CU. | |
8160 | ||
8161 | The caller must fill in the following details: | |
8162 | dirname, textlow, texthigh. */ | |
8163 | ||
8164 | static struct partial_symtab * | |
8165 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
8166 | { | |
8167 | struct objfile *objfile = per_cu->objfile; | |
8168 | struct partial_symtab *pst; | |
8169 | ||
18a94d75 | 8170 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
8171 | objfile->global_psymbols, |
8172 | objfile->static_psymbols); | |
0018ea6f DE |
8173 | |
8174 | pst->psymtabs_addrmap_supported = 1; | |
8175 | ||
8176 | /* This is the glue that links PST into GDB's symbol API. */ | |
8177 | pst->read_symtab_private = per_cu; | |
8178 | pst->read_symtab = dwarf2_read_symtab; | |
8179 | per_cu->v.psymtab = pst; | |
8180 | ||
8181 | return pst; | |
8182 | } | |
8183 | ||
b93601f3 TT |
8184 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
8185 | type. */ | |
8186 | ||
8187 | struct process_psymtab_comp_unit_data | |
8188 | { | |
8189 | /* True if we are reading a DW_TAG_partial_unit. */ | |
8190 | ||
8191 | int want_partial_unit; | |
8192 | ||
8193 | /* The "pretend" language that is used if the CU doesn't declare a | |
8194 | language. */ | |
8195 | ||
8196 | enum language pretend_language; | |
8197 | }; | |
8198 | ||
0018ea6f DE |
8199 | /* die_reader_func for process_psymtab_comp_unit. */ |
8200 | ||
8201 | static void | |
8202 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8203 | const gdb_byte *info_ptr, |
0018ea6f DE |
8204 | struct die_info *comp_unit_die, |
8205 | int has_children, | |
8206 | void *data) | |
8207 | { | |
8208 | struct dwarf2_cu *cu = reader->cu; | |
8209 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 8210 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8211 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8212 | CORE_ADDR baseaddr; |
8213 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
8214 | struct partial_symtab *pst; | |
3a2b436a | 8215 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8216 | const char *filename; |
9a3c8263 SM |
8217 | struct process_psymtab_comp_unit_data *info |
8218 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 8219 | |
b93601f3 | 8220 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
8221 | return; |
8222 | ||
8223 | gdb_assert (! per_cu->is_debug_types); | |
8224 | ||
b93601f3 | 8225 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
8226 | |
8227 | cu->list_in_scope = &file_symbols; | |
8228 | ||
8229 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
8230 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8231 | if (filename == NULL) | |
0018ea6f | 8232 | filename = ""; |
0018ea6f DE |
8233 | |
8234 | pst = create_partial_symtab (per_cu, filename); | |
8235 | ||
8236 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8237 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
8238 | |
8239 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8240 | ||
8241 | dwarf2_find_base_address (comp_unit_die, cu); | |
8242 | ||
8243 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8244 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8245 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8246 | &best_highpc, cu, pst); | |
8247 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
8248 | /* Store the contiguous range if it is not empty; it can be empty for |
8249 | CUs with no code. */ | |
8250 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
8251 | gdbarch_adjust_dwarf2_addr (gdbarch, |
8252 | best_lowpc + baseaddr), | |
8253 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
8254 | best_highpc + baseaddr) - 1, | |
8255 | pst); | |
0018ea6f DE |
8256 | |
8257 | /* Check if comp unit has_children. | |
8258 | If so, read the rest of the partial symbols from this comp unit. | |
8259 | If not, there's no more debug_info for this comp unit. */ | |
8260 | if (has_children) | |
8261 | { | |
8262 | struct partial_die_info *first_die; | |
8263 | CORE_ADDR lowpc, highpc; | |
8264 | ||
8265 | lowpc = ((CORE_ADDR) -1); | |
8266 | highpc = ((CORE_ADDR) 0); | |
8267 | ||
8268 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8269 | ||
8270 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8271 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8272 | |
8273 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8274 | complaints from `maint check'. */ | |
8275 | if (lowpc == ((CORE_ADDR) -1)) | |
8276 | lowpc = highpc; | |
8277 | ||
8278 | /* If the compilation unit didn't have an explicit address range, | |
8279 | then use the information extracted from its child dies. */ | |
e385593e | 8280 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8281 | { |
8282 | best_lowpc = lowpc; | |
8283 | best_highpc = highpc; | |
8284 | } | |
8285 | } | |
3e29f34a MR |
8286 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
8287 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 8288 | |
8763cede | 8289 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8290 | |
8291 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8292 | { | |
8293 | int i; | |
8294 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8295 | struct dwarf2_per_cu_data *iter; | |
8296 | ||
8297 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8298 | post-pass. */ | |
8299 | pst->number_of_dependencies = len; | |
8d749320 SM |
8300 | pst->dependencies = |
8301 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8302 | for (i = 0; |
8303 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8304 | i, iter); | |
8305 | ++i) | |
8306 | pst->dependencies[i] = iter->v.psymtab; | |
8307 | ||
8308 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8309 | } | |
8310 | ||
8311 | /* Get the list of files included in the current compilation unit, | |
8312 | and build a psymtab for each of them. */ | |
8313 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8314 | ||
b4f54984 | 8315 | if (dwarf_read_debug) |
0018ea6f DE |
8316 | { |
8317 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8318 | ||
8319 | fprintf_unfiltered (gdb_stdlog, | |
8320 | "Psymtab for %s unit @0x%x: %s - %s" | |
8321 | ", %d global, %d static syms\n", | |
8322 | per_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 8323 | to_underlying (per_cu->sect_off), |
0018ea6f DE |
8324 | paddress (gdbarch, pst->textlow), |
8325 | paddress (gdbarch, pst->texthigh), | |
8326 | pst->n_global_syms, pst->n_static_syms); | |
8327 | } | |
8328 | } | |
8329 | ||
8330 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8331 | Process compilation unit THIS_CU for a psymtab. */ | |
8332 | ||
8333 | static void | |
8334 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8335 | int want_partial_unit, |
8336 | enum language pretend_language) | |
0018ea6f DE |
8337 | { |
8338 | /* If this compilation unit was already read in, free the | |
8339 | cached copy in order to read it in again. This is | |
8340 | necessary because we skipped some symbols when we first | |
8341 | read in the compilation unit (see load_partial_dies). | |
8342 | This problem could be avoided, but the benefit is unclear. */ | |
8343 | if (this_cu->cu != NULL) | |
8344 | free_one_cached_comp_unit (this_cu); | |
8345 | ||
f1902523 JK |
8346 | if (this_cu->is_debug_types) |
8347 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, build_type_psymtabs_reader, | |
8348 | NULL); | |
8349 | else | |
8350 | { | |
8351 | process_psymtab_comp_unit_data info; | |
8352 | info.want_partial_unit = want_partial_unit; | |
8353 | info.pretend_language = pretend_language; | |
8354 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
8355 | process_psymtab_comp_unit_reader, &info); | |
8356 | } | |
0018ea6f DE |
8357 | |
8358 | /* Age out any secondary CUs. */ | |
8359 | age_cached_comp_units (); | |
8360 | } | |
f4dc4d17 DE |
8361 | |
8362 | /* Reader function for build_type_psymtabs. */ | |
8363 | ||
8364 | static void | |
8365 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8366 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8367 | struct die_info *type_unit_die, |
8368 | int has_children, | |
8369 | void *data) | |
8370 | { | |
8371 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8372 | struct dwarf2_cu *cu = reader->cu; | |
8373 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8374 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8375 | struct type_unit_group *tu_group; |
8376 | struct attribute *attr; | |
8377 | struct partial_die_info *first_die; | |
8378 | CORE_ADDR lowpc, highpc; | |
8379 | struct partial_symtab *pst; | |
8380 | ||
8381 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8382 | gdb_assert (per_cu->is_debug_types); |
8383 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8384 | |
8385 | if (! has_children) | |
8386 | return; | |
8387 | ||
8388 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8389 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8390 | |
0186c6a7 | 8391 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8392 | |
8393 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
8394 | cu->list_in_scope = &file_symbols; | |
8395 | pst = create_partial_symtab (per_cu, ""); | |
8396 | pst->anonymous = 1; | |
8397 | ||
8398 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8399 | ||
8400 | lowpc = (CORE_ADDR) -1; | |
8401 | highpc = (CORE_ADDR) 0; | |
8402 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8403 | ||
8763cede | 8404 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8405 | } |
8406 | ||
73051182 DE |
8407 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8408 | ||
8409 | struct tu_abbrev_offset | |
8410 | { | |
8411 | struct signatured_type *sig_type; | |
8412 | sect_offset abbrev_offset; | |
8413 | }; | |
8414 | ||
8415 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
8416 | ||
8417 | static int | |
8418 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
8419 | { | |
9a3c8263 SM |
8420 | const struct tu_abbrev_offset * const *a |
8421 | = (const struct tu_abbrev_offset * const*) ap; | |
8422 | const struct tu_abbrev_offset * const *b | |
8423 | = (const struct tu_abbrev_offset * const*) bp; | |
9c541725 PA |
8424 | sect_offset aoff = (*a)->abbrev_offset; |
8425 | sect_offset boff = (*b)->abbrev_offset; | |
73051182 DE |
8426 | |
8427 | return (aoff > boff) - (aoff < boff); | |
8428 | } | |
8429 | ||
8430 | /* Efficiently read all the type units. | |
8431 | This does the bulk of the work for build_type_psymtabs. | |
8432 | ||
8433 | The efficiency is because we sort TUs by the abbrev table they use and | |
8434 | only read each abbrev table once. In one program there are 200K TUs | |
8435 | sharing 8K abbrev tables. | |
8436 | ||
8437 | The main purpose of this function is to support building the | |
8438 | dwarf2_per_objfile->type_unit_groups table. | |
8439 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8440 | can collapse the search space by grouping them by stmt_list. | |
8441 | The savings can be significant, in the same program from above the 200K TUs | |
8442 | share 8K stmt_list tables. | |
8443 | ||
8444 | FUNC is expected to call get_type_unit_group, which will create the | |
8445 | struct type_unit_group if necessary and add it to | |
8446 | dwarf2_per_objfile->type_unit_groups. */ | |
8447 | ||
8448 | static void | |
8449 | build_type_psymtabs_1 (void) | |
8450 | { | |
73051182 DE |
8451 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
8452 | struct cleanup *cleanups; | |
8453 | struct abbrev_table *abbrev_table; | |
8454 | sect_offset abbrev_offset; | |
8455 | struct tu_abbrev_offset *sorted_by_abbrev; | |
73051182 DE |
8456 | int i; |
8457 | ||
8458 | /* It's up to the caller to not call us multiple times. */ | |
8459 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8460 | ||
8461 | if (dwarf2_per_objfile->n_type_units == 0) | |
8462 | return; | |
8463 | ||
8464 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8465 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8466 | read each abbrev table in. | |
8467 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8468 | This is simpler and efficient enough for now. | |
8469 | ||
8470 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8471 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8472 | stmt_list value too so in practice this should work well. | |
8473 | ||
8474 | The basic algorithm here is: | |
8475 | ||
8476 | sort TUs by abbrev table | |
8477 | for each TU with same abbrev table: | |
8478 | read abbrev table if first user | |
8479 | read TU top level DIE | |
8480 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8481 | call FUNC */ | |
8482 | ||
b4f54984 | 8483 | if (dwarf_read_debug) |
73051182 DE |
8484 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8485 | ||
8486 | /* Sort in a separate table to maintain the order of all_type_units | |
8487 | for .gdb_index: TU indices directly index all_type_units. */ | |
8488 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
8489 | dwarf2_per_objfile->n_type_units); | |
8490 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
8491 | { | |
8492 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
8493 | ||
8494 | sorted_by_abbrev[i].sig_type = sig_type; | |
8495 | sorted_by_abbrev[i].abbrev_offset = | |
8496 | read_abbrev_offset (sig_type->per_cu.section, | |
9c541725 | 8497 | sig_type->per_cu.sect_off); |
73051182 DE |
8498 | } |
8499 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
8500 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
8501 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
8502 | ||
9c541725 | 8503 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 DE |
8504 | abbrev_table = NULL; |
8505 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
8506 | ||
8507 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
8508 | { | |
8509 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
8510 | ||
8511 | /* Switch to the next abbrev table if necessary. */ | |
8512 | if (abbrev_table == NULL | |
9c541725 | 8513 | || tu->abbrev_offset != abbrev_offset) |
73051182 DE |
8514 | { |
8515 | if (abbrev_table != NULL) | |
8516 | { | |
8517 | abbrev_table_free (abbrev_table); | |
8518 | /* Reset to NULL in case abbrev_table_read_table throws | |
8519 | an error: abbrev_table_free_cleanup will get called. */ | |
8520 | abbrev_table = NULL; | |
8521 | } | |
8522 | abbrev_offset = tu->abbrev_offset; | |
8523 | abbrev_table = | |
8524 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
8525 | abbrev_offset); | |
8526 | ++tu_stats->nr_uniq_abbrev_tables; | |
8527 | } | |
8528 | ||
8529 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
8530 | build_type_psymtabs_reader, NULL); | |
8531 | } | |
8532 | ||
73051182 | 8533 | do_cleanups (cleanups); |
6aa5f3a6 | 8534 | } |
73051182 | 8535 | |
6aa5f3a6 DE |
8536 | /* Print collected type unit statistics. */ |
8537 | ||
8538 | static void | |
8539 | print_tu_stats (void) | |
8540 | { | |
8541 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8542 | ||
8543 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
8544 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
8545 | dwarf2_per_objfile->n_type_units); | |
8546 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
8547 | tu_stats->nr_uniq_abbrev_tables); | |
8548 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8549 | tu_stats->nr_symtabs); | |
8550 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8551 | tu_stats->nr_symtab_sharers); | |
8552 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8553 | tu_stats->nr_stmt_less_type_units); | |
8554 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8555 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8556 | } |
8557 | ||
f4dc4d17 DE |
8558 | /* Traversal function for build_type_psymtabs. */ |
8559 | ||
8560 | static int | |
8561 | build_type_psymtab_dependencies (void **slot, void *info) | |
8562 | { | |
8563 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8564 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8565 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8566 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8567 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8568 | struct signatured_type *iter; | |
f4dc4d17 DE |
8569 | int i; |
8570 | ||
8571 | gdb_assert (len > 0); | |
0186c6a7 | 8572 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8573 | |
8574 | pst->number_of_dependencies = len; | |
8d749320 SM |
8575 | pst->dependencies = |
8576 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8577 | for (i = 0; |
0186c6a7 | 8578 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8579 | ++i) |
8580 | { | |
0186c6a7 DE |
8581 | gdb_assert (iter->per_cu.is_debug_types); |
8582 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8583 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8584 | } |
8585 | ||
0186c6a7 | 8586 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8587 | |
8588 | return 1; | |
8589 | } | |
8590 | ||
8591 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8592 | Build partial symbol tables for the .debug_types comp-units. */ | |
8593 | ||
8594 | static void | |
8595 | build_type_psymtabs (struct objfile *objfile) | |
8596 | { | |
0e50663e | 8597 | if (! create_all_type_units (objfile)) |
348e048f DE |
8598 | return; |
8599 | ||
73051182 | 8600 | build_type_psymtabs_1 (); |
6aa5f3a6 | 8601 | } |
f4dc4d17 | 8602 | |
6aa5f3a6 DE |
8603 | /* Traversal function for process_skeletonless_type_unit. |
8604 | Read a TU in a DWO file and build partial symbols for it. */ | |
8605 | ||
8606 | static int | |
8607 | process_skeletonless_type_unit (void **slot, void *info) | |
8608 | { | |
8609 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
9a3c8263 | 8610 | struct objfile *objfile = (struct objfile *) info; |
6aa5f3a6 DE |
8611 | struct signatured_type find_entry, *entry; |
8612 | ||
8613 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8614 | ||
8615 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8616 | { | |
8617 | dwarf2_per_objfile->signatured_types | |
8618 | = allocate_signatured_type_table (objfile); | |
8619 | } | |
8620 | ||
8621 | find_entry.signature = dwo_unit->signature; | |
8622 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8623 | INSERT); | |
8624 | /* If we've already seen this type there's nothing to do. What's happening | |
8625 | is we're doing our own version of comdat-folding here. */ | |
8626 | if (*slot != NULL) | |
8627 | return 1; | |
8628 | ||
8629 | /* This does the job that create_all_type_units would have done for | |
8630 | this TU. */ | |
8631 | entry = add_type_unit (dwo_unit->signature, slot); | |
8632 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
8633 | *slot = entry; | |
8634 | ||
8635 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
8636 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
8637 | build_type_psymtabs_reader, NULL); | |
8638 | ||
8639 | return 1; | |
8640 | } | |
8641 | ||
8642 | /* Traversal function for process_skeletonless_type_units. */ | |
8643 | ||
8644 | static int | |
8645 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8646 | { | |
8647 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8648 | ||
8649 | if (dwo_file->tus != NULL) | |
8650 | { | |
8651 | htab_traverse_noresize (dwo_file->tus, | |
8652 | process_skeletonless_type_unit, info); | |
8653 | } | |
8654 | ||
8655 | return 1; | |
8656 | } | |
8657 | ||
8658 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8659 | This is needed in case a TU was emitted without its skeleton. | |
8660 | Note: This can't be done until we know what all the DWO files are. */ | |
8661 | ||
8662 | static void | |
8663 | process_skeletonless_type_units (struct objfile *objfile) | |
8664 | { | |
8665 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
8666 | if (get_dwp_file () == NULL | |
8667 | && dwarf2_per_objfile->dwo_files != NULL) | |
8668 | { | |
8669 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8670 | process_dwo_file_for_skeletonless_type_units, | |
8671 | objfile); | |
8672 | } | |
348e048f DE |
8673 | } |
8674 | ||
95554aad TT |
8675 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
8676 | ||
8677 | static void | |
8678 | set_partial_user (struct objfile *objfile) | |
8679 | { | |
8680 | int i; | |
8681 | ||
8682 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
8683 | { | |
8832e7e3 | 8684 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
8685 | struct partial_symtab *pst = per_cu->v.psymtab; |
8686 | int j; | |
8687 | ||
36586728 TT |
8688 | if (pst == NULL) |
8689 | continue; | |
8690 | ||
95554aad TT |
8691 | for (j = 0; j < pst->number_of_dependencies; ++j) |
8692 | { | |
8693 | /* Set the 'user' field only if it is not already set. */ | |
8694 | if (pst->dependencies[j]->user == NULL) | |
8695 | pst->dependencies[j]->user = pst; | |
8696 | } | |
8697 | } | |
8698 | } | |
8699 | ||
93311388 DE |
8700 | /* Build the partial symbol table by doing a quick pass through the |
8701 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8702 | |
93311388 | 8703 | static void |
c67a9c90 | 8704 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 8705 | { |
791afaa2 | 8706 | struct cleanup *back_to; |
21b2bd31 | 8707 | int i; |
93311388 | 8708 | |
b4f54984 | 8709 | if (dwarf_read_debug) |
45cfd468 DE |
8710 | { |
8711 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8712 | objfile_name (objfile)); |
45cfd468 DE |
8713 | } |
8714 | ||
98bfdba5 PA |
8715 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8716 | ||
be391dca | 8717 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8718 | |
93311388 DE |
8719 | /* Any cached compilation units will be linked by the per-objfile |
8720 | read_in_chain. Make sure to free them when we're done. */ | |
8721 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 8722 | |
348e048f DE |
8723 | build_type_psymtabs (objfile); |
8724 | ||
93311388 | 8725 | create_all_comp_units (objfile); |
c906108c | 8726 | |
60606b2c TT |
8727 | /* Create a temporary address map on a temporary obstack. We later |
8728 | copy this to the final obstack. */ | |
8268c778 | 8729 | auto_obstack temp_obstack; |
791afaa2 TT |
8730 | |
8731 | scoped_restore save_psymtabs_addrmap | |
8732 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8733 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8734 | |
21b2bd31 | 8735 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 8736 | { |
8832e7e3 | 8737 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 8738 | |
b93601f3 | 8739 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 8740 | } |
ff013f42 | 8741 | |
6aa5f3a6 DE |
8742 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
8743 | process_skeletonless_type_units (objfile); | |
8744 | ||
8745 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8746 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8747 | { | |
8748 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
8749 | build_type_psymtab_dependencies, NULL); | |
8750 | } | |
8751 | ||
b4f54984 | 8752 | if (dwarf_read_debug) |
6aa5f3a6 DE |
8753 | print_tu_stats (); |
8754 | ||
95554aad TT |
8755 | set_partial_user (objfile); |
8756 | ||
ff013f42 JK |
8757 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8758 | &objfile->objfile_obstack); | |
791afaa2 TT |
8759 | /* At this point we want to keep the address map. */ |
8760 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8761 | |
ae038cb0 | 8762 | do_cleanups (back_to); |
45cfd468 | 8763 | |
b4f54984 | 8764 | if (dwarf_read_debug) |
45cfd468 | 8765 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8766 | objfile_name (objfile)); |
ae038cb0 DJ |
8767 | } |
8768 | ||
3019eac3 | 8769 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8770 | |
8771 | static void | |
dee91e82 | 8772 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8773 | const gdb_byte *info_ptr, |
dee91e82 DE |
8774 | struct die_info *comp_unit_die, |
8775 | int has_children, | |
8776 | void *data) | |
ae038cb0 | 8777 | { |
dee91e82 | 8778 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8779 | |
95554aad | 8780 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8781 | |
ae038cb0 DJ |
8782 | /* Check if comp unit has_children. |
8783 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8784 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8785 | if (has_children) |
dee91e82 DE |
8786 | load_partial_dies (reader, info_ptr, 0); |
8787 | } | |
98bfdba5 | 8788 | |
dee91e82 DE |
8789 | /* Load the partial DIEs for a secondary CU into memory. |
8790 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8791 | |
dee91e82 DE |
8792 | static void |
8793 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8794 | { | |
f4dc4d17 DE |
8795 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
8796 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
8797 | } |
8798 | ||
ae038cb0 | 8799 | static void |
36586728 TT |
8800 | read_comp_units_from_section (struct objfile *objfile, |
8801 | struct dwarf2_section_info *section, | |
f1902523 | 8802 | struct dwarf2_section_info *abbrev_section, |
36586728 TT |
8803 | unsigned int is_dwz, |
8804 | int *n_allocated, | |
8805 | int *n_comp_units, | |
8806 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 8807 | { |
d521ce57 | 8808 | const gdb_byte *info_ptr; |
be391dca | 8809 | |
b4f54984 | 8810 | if (dwarf_read_debug) |
bf6af496 | 8811 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8812 | get_section_name (section), |
8813 | get_section_file_name (section)); | |
bf6af496 | 8814 | |
36586728 | 8815 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8816 | |
36586728 | 8817 | info_ptr = section->buffer; |
6e70227d | 8818 | |
36586728 | 8819 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8820 | { |
ae038cb0 | 8821 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8822 | |
9c541725 | 8823 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8824 | |
f1902523 JK |
8825 | comp_unit_head cu_header; |
8826 | read_and_check_comp_unit_head (&cu_header, section, abbrev_section, | |
8827 | info_ptr, rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8828 | |
8829 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8830 | if (cu_header.unit_type != DW_UT_type) |
8831 | { | |
8832 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8833 | struct dwarf2_per_cu_data); | |
8834 | memset (this_cu, 0, sizeof (*this_cu)); | |
8835 | } | |
8836 | else | |
8837 | { | |
8838 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8839 | struct signatured_type); | |
8840 | memset (sig_type, 0, sizeof (*sig_type)); | |
8841 | sig_type->signature = cu_header.signature; | |
8842 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8843 | this_cu = &sig_type->per_cu; | |
8844 | } | |
8845 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8846 | this_cu->sect_off = sect_off; |
f1902523 | 8847 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8848 | this_cu->is_dwz = is_dwz; |
9291a0cd | 8849 | this_cu->objfile = objfile; |
8a0459fd | 8850 | this_cu->section = section; |
ae038cb0 | 8851 | |
36586728 | 8852 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 8853 | { |
36586728 | 8854 | *n_allocated *= 2; |
224c3ddb SM |
8855 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
8856 | *all_comp_units, *n_allocated); | |
ae038cb0 | 8857 | } |
36586728 TT |
8858 | (*all_comp_units)[*n_comp_units] = this_cu; |
8859 | ++*n_comp_units; | |
ae038cb0 DJ |
8860 | |
8861 | info_ptr = info_ptr + this_cu->length; | |
8862 | } | |
36586728 TT |
8863 | } |
8864 | ||
8865 | /* Create a list of all compilation units in OBJFILE. | |
8866 | This is only done for -readnow and building partial symtabs. */ | |
8867 | ||
8868 | static void | |
8869 | create_all_comp_units (struct objfile *objfile) | |
8870 | { | |
8871 | int n_allocated; | |
8872 | int n_comp_units; | |
8873 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 8874 | struct dwz_file *dwz; |
36586728 TT |
8875 | |
8876 | n_comp_units = 0; | |
8877 | n_allocated = 10; | |
8d749320 | 8878 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 | 8879 | |
f1902523 JK |
8880 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, |
8881 | &dwarf2_per_objfile->abbrev, 0, | |
36586728 TT |
8882 | &n_allocated, &n_comp_units, &all_comp_units); |
8883 | ||
4db1a1dc TT |
8884 | dwz = dwarf2_get_dwz_file (); |
8885 | if (dwz != NULL) | |
f1902523 | 8886 | read_comp_units_from_section (objfile, &dwz->info, &dwz->abbrev, 1, |
4db1a1dc TT |
8887 | &n_allocated, &n_comp_units, |
8888 | &all_comp_units); | |
ae038cb0 | 8889 | |
8d749320 SM |
8890 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
8891 | struct dwarf2_per_cu_data *, | |
8892 | n_comp_units); | |
ae038cb0 DJ |
8893 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
8894 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
8895 | xfree (all_comp_units); | |
8896 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
8897 | } |
8898 | ||
5734ee8b | 8899 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8900 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8901 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8902 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8903 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8904 | |
72bf9492 DJ |
8905 | static void |
8906 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8907 | CORE_ADDR *highpc, int set_addrmap, |
8908 | struct dwarf2_cu *cu) | |
c906108c | 8909 | { |
72bf9492 | 8910 | struct partial_die_info *pdi; |
c906108c | 8911 | |
91c24f0a DC |
8912 | /* Now, march along the PDI's, descending into ones which have |
8913 | interesting children but skipping the children of the other ones, | |
8914 | until we reach the end of the compilation unit. */ | |
c906108c | 8915 | |
72bf9492 | 8916 | pdi = first_die; |
91c24f0a | 8917 | |
72bf9492 DJ |
8918 | while (pdi != NULL) |
8919 | { | |
8920 | fixup_partial_die (pdi, cu); | |
c906108c | 8921 | |
f55ee35c | 8922 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8923 | children, so we need to look at them. Ditto for anonymous |
8924 | enums. */ | |
933c6fe4 | 8925 | |
72bf9492 | 8926 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
8927 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
8928 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 8929 | { |
72bf9492 | 8930 | switch (pdi->tag) |
c906108c SS |
8931 | { |
8932 | case DW_TAG_subprogram: | |
cdc07690 | 8933 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8934 | break; |
72929c62 | 8935 | case DW_TAG_constant: |
c906108c SS |
8936 | case DW_TAG_variable: |
8937 | case DW_TAG_typedef: | |
91c24f0a | 8938 | case DW_TAG_union_type: |
72bf9492 | 8939 | if (!pdi->is_declaration) |
63d06c5c | 8940 | { |
72bf9492 | 8941 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8942 | } |
8943 | break; | |
c906108c | 8944 | case DW_TAG_class_type: |
680b30c7 | 8945 | case DW_TAG_interface_type: |
c906108c | 8946 | case DW_TAG_structure_type: |
72bf9492 | 8947 | if (!pdi->is_declaration) |
c906108c | 8948 | { |
72bf9492 | 8949 | add_partial_symbol (pdi, cu); |
c906108c | 8950 | } |
e98c9e7c TT |
8951 | if (cu->language == language_rust && pdi->has_children) |
8952 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8953 | set_addrmap, cu); | |
c906108c | 8954 | break; |
91c24f0a | 8955 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8956 | if (!pdi->is_declaration) |
8957 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8958 | break; |
8959 | case DW_TAG_base_type: | |
a02abb62 | 8960 | case DW_TAG_subrange_type: |
c906108c | 8961 | /* File scope base type definitions are added to the partial |
c5aa993b | 8962 | symbol table. */ |
72bf9492 | 8963 | add_partial_symbol (pdi, cu); |
c906108c | 8964 | break; |
d9fa45fe | 8965 | case DW_TAG_namespace: |
cdc07690 | 8966 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8967 | break; |
5d7cb8df | 8968 | case DW_TAG_module: |
cdc07690 | 8969 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8970 | break; |
95554aad TT |
8971 | case DW_TAG_imported_unit: |
8972 | { | |
8973 | struct dwarf2_per_cu_data *per_cu; | |
8974 | ||
f4dc4d17 DE |
8975 | /* For now we don't handle imported units in type units. */ |
8976 | if (cu->per_cu->is_debug_types) | |
8977 | { | |
8978 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8979 | " supported in type units [in module %s]"), | |
4262abfb | 8980 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8981 | } |
8982 | ||
9c541725 | 8983 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.sect_off, |
36586728 | 8984 | pdi->is_dwz, |
95554aad TT |
8985 | cu->objfile); |
8986 | ||
8987 | /* Go read the partial unit, if needed. */ | |
8988 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8989 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8990 | |
f4dc4d17 | 8991 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8992 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8993 | } |
8994 | break; | |
74921315 KS |
8995 | case DW_TAG_imported_declaration: |
8996 | add_partial_symbol (pdi, cu); | |
8997 | break; | |
c906108c SS |
8998 | default: |
8999 | break; | |
9000 | } | |
9001 | } | |
9002 | ||
72bf9492 DJ |
9003 | /* If the die has a sibling, skip to the sibling. */ |
9004 | ||
9005 | pdi = pdi->die_sibling; | |
9006 | } | |
9007 | } | |
9008 | ||
9009 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 9010 | |
72bf9492 | 9011 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 9012 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
9013 | Enumerators are an exception; they use the scope of their parent |
9014 | enumeration type, i.e. the name of the enumeration type is not | |
9015 | prepended to the enumerator. | |
91c24f0a | 9016 | |
72bf9492 DJ |
9017 | There are two complexities. One is DW_AT_specification; in this |
9018 | case "parent" means the parent of the target of the specification, | |
9019 | instead of the direct parent of the DIE. The other is compilers | |
9020 | which do not emit DW_TAG_namespace; in this case we try to guess | |
9021 | the fully qualified name of structure types from their members' | |
9022 | linkage names. This must be done using the DIE's children rather | |
9023 | than the children of any DW_AT_specification target. We only need | |
9024 | to do this for structures at the top level, i.e. if the target of | |
9025 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
9026 | have a parent. */ | |
9027 | ||
9028 | /* Compute the scope prefix associated with PDI's parent, in | |
9029 | compilation unit CU. The result will be allocated on CU's | |
9030 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
9031 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 9032 | static const char * |
72bf9492 DJ |
9033 | partial_die_parent_scope (struct partial_die_info *pdi, |
9034 | struct dwarf2_cu *cu) | |
9035 | { | |
15d034d0 | 9036 | const char *grandparent_scope; |
72bf9492 | 9037 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 9038 | |
72bf9492 DJ |
9039 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
9040 | then this means the parent of the specification DIE. */ | |
9041 | ||
9042 | real_pdi = pdi; | |
72bf9492 | 9043 | while (real_pdi->has_specification) |
36586728 TT |
9044 | real_pdi = find_partial_die (real_pdi->spec_offset, |
9045 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
9046 | |
9047 | parent = real_pdi->die_parent; | |
9048 | if (parent == NULL) | |
9049 | return NULL; | |
9050 | ||
9051 | if (parent->scope_set) | |
9052 | return parent->scope; | |
9053 | ||
9054 | fixup_partial_die (parent, cu); | |
9055 | ||
10b3939b | 9056 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 9057 | |
acebe513 UW |
9058 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
9059 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
9060 | Work around this problem here. */ | |
9061 | if (cu->language == language_cplus | |
6e70227d | 9062 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
9063 | && strcmp (parent->name, "::") == 0 |
9064 | && grandparent_scope == NULL) | |
9065 | { | |
9066 | parent->scope = NULL; | |
9067 | parent->scope_set = 1; | |
9068 | return NULL; | |
9069 | } | |
9070 | ||
9c6c53f7 SA |
9071 | if (pdi->tag == DW_TAG_enumerator) |
9072 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
9073 | parent->scope = grandparent_scope; | |
9074 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 9075 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
9076 | || parent->tag == DW_TAG_structure_type |
9077 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 9078 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
9079 | || parent->tag == DW_TAG_union_type |
9080 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
9081 | { |
9082 | if (grandparent_scope == NULL) | |
9083 | parent->scope = parent->name; | |
9084 | else | |
3e43a32a MS |
9085 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
9086 | grandparent_scope, | |
f55ee35c | 9087 | parent->name, 0, cu); |
72bf9492 | 9088 | } |
72bf9492 DJ |
9089 | else |
9090 | { | |
9091 | /* FIXME drow/2004-04-01: What should we be doing with | |
9092 | function-local names? For partial symbols, we should probably be | |
9093 | ignoring them. */ | |
9094 | complaint (&symfile_complaints, | |
e2e0b3e5 | 9095 | _("unhandled containing DIE tag %d for DIE at %d"), |
9c541725 | 9096 | parent->tag, to_underlying (pdi->sect_off)); |
72bf9492 | 9097 | parent->scope = grandparent_scope; |
c906108c SS |
9098 | } |
9099 | ||
72bf9492 DJ |
9100 | parent->scope_set = 1; |
9101 | return parent->scope; | |
9102 | } | |
9103 | ||
9104 | /* Return the fully scoped name associated with PDI, from compilation unit | |
9105 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 9106 | |
72bf9492 DJ |
9107 | static char * |
9108 | partial_die_full_name (struct partial_die_info *pdi, | |
9109 | struct dwarf2_cu *cu) | |
9110 | { | |
15d034d0 | 9111 | const char *parent_scope; |
72bf9492 | 9112 | |
98bfdba5 PA |
9113 | /* If this is a template instantiation, we can not work out the |
9114 | template arguments from partial DIEs. So, unfortunately, we have | |
9115 | to go through the full DIEs. At least any work we do building | |
9116 | types here will be reused if full symbols are loaded later. */ | |
9117 | if (pdi->has_template_arguments) | |
9118 | { | |
9119 | fixup_partial_die (pdi, cu); | |
9120 | ||
9121 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
9122 | { | |
9123 | struct die_info *die; | |
9124 | struct attribute attr; | |
9125 | struct dwarf2_cu *ref_cu = cu; | |
9126 | ||
b64f50a1 | 9127 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 9128 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 9129 | attr.form = DW_FORM_ref_addr; |
9c541725 | 9130 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
9131 | die = follow_die_ref (NULL, &attr, &ref_cu); |
9132 | ||
9133 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
9134 | } | |
9135 | } | |
9136 | ||
72bf9492 DJ |
9137 | parent_scope = partial_die_parent_scope (pdi, cu); |
9138 | if (parent_scope == NULL) | |
9139 | return NULL; | |
9140 | else | |
f55ee35c | 9141 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
9142 | } |
9143 | ||
9144 | static void | |
72bf9492 | 9145 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 9146 | { |
e7c27a73 | 9147 | struct objfile *objfile = cu->objfile; |
3e29f34a | 9148 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 9149 | CORE_ADDR addr = 0; |
15d034d0 | 9150 | const char *actual_name = NULL; |
e142c38c | 9151 | CORE_ADDR baseaddr; |
15d034d0 | 9152 | char *built_actual_name; |
e142c38c DJ |
9153 | |
9154 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9155 | |
15d034d0 TT |
9156 | built_actual_name = partial_die_full_name (pdi, cu); |
9157 | if (built_actual_name != NULL) | |
9158 | actual_name = built_actual_name; | |
63d06c5c | 9159 | |
72bf9492 DJ |
9160 | if (actual_name == NULL) |
9161 | actual_name = pdi->name; | |
9162 | ||
c906108c SS |
9163 | switch (pdi->tag) |
9164 | { | |
9165 | case DW_TAG_subprogram: | |
3e29f34a | 9166 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 9167 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 9168 | { |
2cfa0c8d JB |
9169 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
9170 | of the global scope. But in Ada, we want to be able to access | |
9171 | nested procedures globally. So all Ada subprograms are stored | |
9172 | in the global scope. */ | |
f47fb265 | 9173 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9174 | built_actual_name != NULL, |
f47fb265 MS |
9175 | VAR_DOMAIN, LOC_BLOCK, |
9176 | &objfile->global_psymbols, | |
1762568f | 9177 | addr, cu->language, objfile); |
c906108c SS |
9178 | } |
9179 | else | |
9180 | { | |
f47fb265 | 9181 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9182 | built_actual_name != NULL, |
f47fb265 MS |
9183 | VAR_DOMAIN, LOC_BLOCK, |
9184 | &objfile->static_psymbols, | |
1762568f | 9185 | addr, cu->language, objfile); |
c906108c | 9186 | } |
0c1b455e TT |
9187 | |
9188 | if (pdi->main_subprogram && actual_name != NULL) | |
9189 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 9190 | break; |
72929c62 JB |
9191 | case DW_TAG_constant: |
9192 | { | |
af5bf4ad | 9193 | std::vector<partial_symbol *> *list; |
72929c62 JB |
9194 | |
9195 | if (pdi->is_external) | |
9196 | list = &objfile->global_psymbols; | |
9197 | else | |
9198 | list = &objfile->static_psymbols; | |
f47fb265 | 9199 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9200 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 9201 | list, 0, cu->language, objfile); |
72929c62 JB |
9202 | } |
9203 | break; | |
c906108c | 9204 | case DW_TAG_variable: |
95554aad TT |
9205 | if (pdi->d.locdesc) |
9206 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 9207 | |
95554aad | 9208 | if (pdi->d.locdesc |
caac4577 JG |
9209 | && addr == 0 |
9210 | && !dwarf2_per_objfile->has_section_at_zero) | |
9211 | { | |
9212 | /* A global or static variable may also have been stripped | |
9213 | out by the linker if unused, in which case its address | |
9214 | will be nullified; do not add such variables into partial | |
9215 | symbol table then. */ | |
9216 | } | |
9217 | else if (pdi->is_external) | |
c906108c SS |
9218 | { |
9219 | /* Global Variable. | |
9220 | Don't enter into the minimal symbol tables as there is | |
9221 | a minimal symbol table entry from the ELF symbols already. | |
9222 | Enter into partial symbol table if it has a location | |
9223 | descriptor or a type. | |
9224 | If the location descriptor is missing, new_symbol will create | |
9225 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
9226 | be determined from the minimal symbol table whenever the variable | |
9227 | is referenced. | |
9228 | The address for the partial symbol table entry is not | |
9229 | used by GDB, but it comes in handy for debugging partial symbol | |
9230 | table building. */ | |
9231 | ||
95554aad | 9232 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 9233 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9234 | built_actual_name != NULL, |
f47fb265 MS |
9235 | VAR_DOMAIN, LOC_STATIC, |
9236 | &objfile->global_psymbols, | |
1762568f | 9237 | addr + baseaddr, |
f47fb265 | 9238 | cu->language, objfile); |
c906108c SS |
9239 | } |
9240 | else | |
9241 | { | |
ff908ebf AW |
9242 | int has_loc = pdi->d.locdesc != NULL; |
9243 | ||
9244 | /* Static Variable. Skip symbols whose value we cannot know (those | |
9245 | without location descriptors or constant values). */ | |
9246 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 9247 | { |
15d034d0 | 9248 | xfree (built_actual_name); |
decbce07 MS |
9249 | return; |
9250 | } | |
ff908ebf | 9251 | |
f47fb265 | 9252 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9253 | built_actual_name != NULL, |
f47fb265 MS |
9254 | VAR_DOMAIN, LOC_STATIC, |
9255 | &objfile->static_psymbols, | |
ff908ebf | 9256 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 9257 | cu->language, objfile); |
c906108c SS |
9258 | } |
9259 | break; | |
9260 | case DW_TAG_typedef: | |
9261 | case DW_TAG_base_type: | |
a02abb62 | 9262 | case DW_TAG_subrange_type: |
38d518c9 | 9263 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9264 | built_actual_name != NULL, |
176620f1 | 9265 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 9266 | &objfile->static_psymbols, |
1762568f | 9267 | 0, cu->language, objfile); |
c906108c | 9268 | break; |
74921315 | 9269 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
9270 | case DW_TAG_namespace: |
9271 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 9272 | built_actual_name != NULL, |
72bf9492 DJ |
9273 | VAR_DOMAIN, LOC_TYPEDEF, |
9274 | &objfile->global_psymbols, | |
1762568f | 9275 | 0, cu->language, objfile); |
72bf9492 | 9276 | break; |
530e8392 KB |
9277 | case DW_TAG_module: |
9278 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9279 | built_actual_name != NULL, | |
9280 | MODULE_DOMAIN, LOC_TYPEDEF, | |
9281 | &objfile->global_psymbols, | |
1762568f | 9282 | 0, cu->language, objfile); |
530e8392 | 9283 | break; |
c906108c | 9284 | case DW_TAG_class_type: |
680b30c7 | 9285 | case DW_TAG_interface_type: |
c906108c SS |
9286 | case DW_TAG_structure_type: |
9287 | case DW_TAG_union_type: | |
9288 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9289 | /* Skip external references. The DWARF standard says in the section |
9290 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9291 | structure, union or class type is represented by a structure, | |
9292 | union or class entry that does not have a byte size attribute | |
9293 | and that has a DW_AT_declaration attribute." */ | |
9294 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9295 | { |
15d034d0 | 9296 | xfree (built_actual_name); |
decbce07 MS |
9297 | return; |
9298 | } | |
fa4028e9 | 9299 | |
63d06c5c DC |
9300 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9301 | static vs. global. */ | |
38d518c9 | 9302 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9303 | built_actual_name != NULL, |
176620f1 | 9304 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 9305 | cu->language == language_cplus |
63d06c5c DC |
9306 | ? &objfile->global_psymbols |
9307 | : &objfile->static_psymbols, | |
1762568f | 9308 | 0, cu->language, objfile); |
c906108c | 9309 | |
c906108c SS |
9310 | break; |
9311 | case DW_TAG_enumerator: | |
38d518c9 | 9312 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9313 | built_actual_name != NULL, |
176620f1 | 9314 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 9315 | cu->language == language_cplus |
f6fe98ef DJ |
9316 | ? &objfile->global_psymbols |
9317 | : &objfile->static_psymbols, | |
1762568f | 9318 | 0, cu->language, objfile); |
c906108c SS |
9319 | break; |
9320 | default: | |
9321 | break; | |
9322 | } | |
5c4e30ca | 9323 | |
15d034d0 | 9324 | xfree (built_actual_name); |
c906108c SS |
9325 | } |
9326 | ||
5c4e30ca DC |
9327 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9328 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9329 | the name of the enclosing namespace. */ | |
91c24f0a | 9330 | |
72bf9492 DJ |
9331 | static void |
9332 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9333 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9334 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9335 | { |
72bf9492 | 9336 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9337 | |
72bf9492 | 9338 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9339 | |
9340 | /* Now scan partial symbols in that namespace. */ | |
9341 | ||
91c24f0a | 9342 | if (pdi->has_children) |
cdc07690 | 9343 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9344 | } |
9345 | ||
5d7cb8df JK |
9346 | /* Read a partial die corresponding to a Fortran module. */ |
9347 | ||
9348 | static void | |
9349 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9350 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9351 | { |
530e8392 KB |
9352 | /* Add a symbol for the namespace. */ |
9353 | ||
9354 | add_partial_symbol (pdi, cu); | |
9355 | ||
f55ee35c | 9356 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9357 | |
9358 | if (pdi->has_children) | |
cdc07690 | 9359 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9360 | } |
9361 | ||
bc30ff58 JB |
9362 | /* Read a partial die corresponding to a subprogram and create a partial |
9363 | symbol for that subprogram. When the CU language allows it, this | |
9364 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 9365 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
9366 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
9367 | and highest PC values found in PDI. | |
6e70227d | 9368 | |
cdc07690 YQ |
9369 | PDI may also be a lexical block, in which case we simply search |
9370 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9371 | Again, this is only performed when the CU language allows this |
9372 | type of definitions. */ | |
9373 | ||
9374 | static void | |
9375 | add_partial_subprogram (struct partial_die_info *pdi, | |
9376 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9377 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
9378 | { |
9379 | if (pdi->tag == DW_TAG_subprogram) | |
9380 | { | |
9381 | if (pdi->has_pc_info) | |
9382 | { | |
9383 | if (pdi->lowpc < *lowpc) | |
9384 | *lowpc = pdi->lowpc; | |
9385 | if (pdi->highpc > *highpc) | |
9386 | *highpc = pdi->highpc; | |
cdc07690 | 9387 | if (set_addrmap) |
5734ee8b | 9388 | { |
5734ee8b | 9389 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
9390 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9391 | CORE_ADDR baseaddr; | |
9392 | CORE_ADDR highpc; | |
9393 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9394 | |
9395 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9396 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
9397 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
9398 | pdi->lowpc + baseaddr); | |
9399 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
9400 | pdi->highpc + baseaddr); | |
9401 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 9402 | cu->per_cu->v.psymtab); |
5734ee8b | 9403 | } |
481860b3 GB |
9404 | } |
9405 | ||
9406 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9407 | { | |
bc30ff58 | 9408 | if (!pdi->is_declaration) |
e8d05480 JB |
9409 | /* Ignore subprogram DIEs that do not have a name, they are |
9410 | illegal. Do not emit a complaint at this point, we will | |
9411 | do so when we convert this psymtab into a symtab. */ | |
9412 | if (pdi->name) | |
9413 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9414 | } |
9415 | } | |
6e70227d | 9416 | |
bc30ff58 JB |
9417 | if (! pdi->has_children) |
9418 | return; | |
9419 | ||
9420 | if (cu->language == language_ada) | |
9421 | { | |
9422 | pdi = pdi->die_child; | |
9423 | while (pdi != NULL) | |
9424 | { | |
9425 | fixup_partial_die (pdi, cu); | |
9426 | if (pdi->tag == DW_TAG_subprogram | |
9427 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 9428 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9429 | pdi = pdi->die_sibling; |
9430 | } | |
9431 | } | |
9432 | } | |
9433 | ||
91c24f0a DC |
9434 | /* Read a partial die corresponding to an enumeration type. */ |
9435 | ||
72bf9492 DJ |
9436 | static void |
9437 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9438 | struct dwarf2_cu *cu) | |
91c24f0a | 9439 | { |
72bf9492 | 9440 | struct partial_die_info *pdi; |
91c24f0a DC |
9441 | |
9442 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9443 | add_partial_symbol (enum_pdi, cu); |
9444 | ||
9445 | pdi = enum_pdi->die_child; | |
9446 | while (pdi) | |
91c24f0a | 9447 | { |
72bf9492 | 9448 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 9449 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 9450 | else |
72bf9492 DJ |
9451 | add_partial_symbol (pdi, cu); |
9452 | pdi = pdi->die_sibling; | |
91c24f0a | 9453 | } |
91c24f0a DC |
9454 | } |
9455 | ||
6caca83c CC |
9456 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9457 | ||
9458 | static unsigned int | |
d521ce57 | 9459 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9460 | { |
9461 | unsigned int bytes_read; | |
9462 | ||
9463 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9464 | } | |
9465 | ||
4bb7a0a7 DJ |
9466 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
9467 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
9468 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9469 | the initial number. */ | |
9470 | ||
9471 | static struct abbrev_info * | |
d521ce57 | 9472 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 9473 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
9474 | { |
9475 | bfd *abfd = cu->objfile->obfd; | |
9476 | unsigned int abbrev_number; | |
9477 | struct abbrev_info *abbrev; | |
9478 | ||
9479 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
9480 | ||
9481 | if (abbrev_number == 0) | |
9482 | return NULL; | |
9483 | ||
433df2d4 | 9484 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
9485 | if (!abbrev) |
9486 | { | |
422b9917 DE |
9487 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9488 | " at offset 0x%x [in module %s]"), | |
9489 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
9c541725 | 9490 | to_underlying (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9491 | } |
9492 | ||
9493 | return abbrev; | |
9494 | } | |
9495 | ||
93311388 DE |
9496 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9497 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9498 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9499 | ||
d521ce57 TT |
9500 | static const gdb_byte * |
9501 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9502 | { |
dee91e82 | 9503 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
9504 | struct abbrev_info *abbrev; |
9505 | unsigned int bytes_read; | |
9506 | ||
9507 | while (1) | |
9508 | { | |
9509 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
9510 | if (abbrev == NULL) | |
9511 | return info_ptr + bytes_read; | |
9512 | else | |
dee91e82 | 9513 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9514 | } |
9515 | } | |
9516 | ||
93311388 DE |
9517 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9518 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9519 | abbrev corresponding to that skipped uleb128 should be passed in |
9520 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9521 | children. */ | |
9522 | ||
d521ce57 TT |
9523 | static const gdb_byte * |
9524 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9525 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9526 | { |
9527 | unsigned int bytes_read; | |
9528 | struct attribute attr; | |
dee91e82 DE |
9529 | bfd *abfd = reader->abfd; |
9530 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9531 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9532 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9533 | unsigned int form, i; |
9534 | ||
9535 | for (i = 0; i < abbrev->num_attrs; i++) | |
9536 | { | |
9537 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9538 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9539 | { | |
dee91e82 | 9540 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9541 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
9542 | complaint (&symfile_complaints, |
9543 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 9544 | else |
b9502d3f | 9545 | { |
9c541725 PA |
9546 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9547 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9548 | |
9549 | if (sibling_ptr < info_ptr) | |
9550 | complaint (&symfile_complaints, | |
9551 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
9552 | else if (sibling_ptr > reader->buffer_end) |
9553 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9554 | else |
9555 | return sibling_ptr; | |
9556 | } | |
4bb7a0a7 DJ |
9557 | } |
9558 | ||
9559 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9560 | form = abbrev->attrs[i].form; | |
9561 | skip_attribute: | |
9562 | switch (form) | |
9563 | { | |
4bb7a0a7 | 9564 | case DW_FORM_ref_addr: |
ae411497 TT |
9565 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9566 | and later it is offset sized. */ | |
9567 | if (cu->header.version == 2) | |
9568 | info_ptr += cu->header.addr_size; | |
9569 | else | |
9570 | info_ptr += cu->header.offset_size; | |
9571 | break; | |
36586728 TT |
9572 | case DW_FORM_GNU_ref_alt: |
9573 | info_ptr += cu->header.offset_size; | |
9574 | break; | |
ae411497 | 9575 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9576 | info_ptr += cu->header.addr_size; |
9577 | break; | |
9578 | case DW_FORM_data1: | |
9579 | case DW_FORM_ref1: | |
9580 | case DW_FORM_flag: | |
9581 | info_ptr += 1; | |
9582 | break; | |
2dc7f7b3 | 9583 | case DW_FORM_flag_present: |
43988095 | 9584 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9585 | break; |
4bb7a0a7 DJ |
9586 | case DW_FORM_data2: |
9587 | case DW_FORM_ref2: | |
9588 | info_ptr += 2; | |
9589 | break; | |
9590 | case DW_FORM_data4: | |
9591 | case DW_FORM_ref4: | |
9592 | info_ptr += 4; | |
9593 | break; | |
9594 | case DW_FORM_data8: | |
9595 | case DW_FORM_ref8: | |
55f1336d | 9596 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9597 | info_ptr += 8; |
9598 | break; | |
0224619f JK |
9599 | case DW_FORM_data16: |
9600 | info_ptr += 16; | |
9601 | break; | |
4bb7a0a7 | 9602 | case DW_FORM_string: |
9b1c24c8 | 9603 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9604 | info_ptr += bytes_read; |
9605 | break; | |
2dc7f7b3 | 9606 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9607 | case DW_FORM_strp: |
36586728 | 9608 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9609 | info_ptr += cu->header.offset_size; |
9610 | break; | |
2dc7f7b3 | 9611 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9612 | case DW_FORM_block: |
9613 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9614 | info_ptr += bytes_read; | |
9615 | break; | |
9616 | case DW_FORM_block1: | |
9617 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9618 | break; | |
9619 | case DW_FORM_block2: | |
9620 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9621 | break; | |
9622 | case DW_FORM_block4: | |
9623 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9624 | break; | |
9625 | case DW_FORM_sdata: | |
9626 | case DW_FORM_udata: | |
9627 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9628 | case DW_FORM_GNU_addr_index: |
9629 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9630 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9631 | break; |
9632 | case DW_FORM_indirect: | |
9633 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9634 | info_ptr += bytes_read; | |
9635 | /* We need to continue parsing from here, so just go back to | |
9636 | the top. */ | |
9637 | goto skip_attribute; | |
9638 | ||
9639 | default: | |
3e43a32a MS |
9640 | error (_("Dwarf Error: Cannot handle %s " |
9641 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9642 | dwarf_form_name (form), |
9643 | bfd_get_filename (abfd)); | |
9644 | } | |
9645 | } | |
9646 | ||
9647 | if (abbrev->has_children) | |
dee91e82 | 9648 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9649 | else |
9650 | return info_ptr; | |
9651 | } | |
9652 | ||
93311388 | 9653 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9654 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9655 | |
d521ce57 | 9656 | static const gdb_byte * |
dee91e82 DE |
9657 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9658 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9659 | const gdb_byte *info_ptr) |
91c24f0a DC |
9660 | { |
9661 | /* Do we know the sibling already? */ | |
72bf9492 | 9662 | |
91c24f0a DC |
9663 | if (orig_pdi->sibling) |
9664 | return orig_pdi->sibling; | |
9665 | ||
9666 | /* Are there any children to deal with? */ | |
9667 | ||
9668 | if (!orig_pdi->has_children) | |
9669 | return info_ptr; | |
9670 | ||
4bb7a0a7 | 9671 | /* Skip the children the long way. */ |
91c24f0a | 9672 | |
dee91e82 | 9673 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9674 | } |
9675 | ||
257e7a09 | 9676 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9677 | not NULL. */ |
c906108c SS |
9678 | |
9679 | static void | |
257e7a09 YQ |
9680 | dwarf2_read_symtab (struct partial_symtab *self, |
9681 | struct objfile *objfile) | |
c906108c | 9682 | { |
257e7a09 | 9683 | if (self->readin) |
c906108c | 9684 | { |
442e4d9c | 9685 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9686 | self->filename); |
442e4d9c YQ |
9687 | } |
9688 | else | |
9689 | { | |
9690 | if (info_verbose) | |
c906108c | 9691 | { |
442e4d9c | 9692 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9693 | self->filename); |
442e4d9c | 9694 | gdb_flush (gdb_stdout); |
c906108c | 9695 | } |
c906108c | 9696 | |
442e4d9c | 9697 | /* Restore our global data. */ |
9a3c8263 SM |
9698 | dwarf2_per_objfile |
9699 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
9700 | dwarf2_objfile_data_key); | |
10b3939b | 9701 | |
442e4d9c YQ |
9702 | /* If this psymtab is constructed from a debug-only objfile, the |
9703 | has_section_at_zero flag will not necessarily be correct. We | |
9704 | can get the correct value for this flag by looking at the data | |
9705 | associated with the (presumably stripped) associated objfile. */ | |
9706 | if (objfile->separate_debug_objfile_backlink) | |
9707 | { | |
9708 | struct dwarf2_per_objfile *dpo_backlink | |
9a3c8263 SM |
9709 | = ((struct dwarf2_per_objfile *) |
9710 | objfile_data (objfile->separate_debug_objfile_backlink, | |
9711 | dwarf2_objfile_data_key)); | |
9a619af0 | 9712 | |
442e4d9c YQ |
9713 | dwarf2_per_objfile->has_section_at_zero |
9714 | = dpo_backlink->has_section_at_zero; | |
9715 | } | |
b2ab525c | 9716 | |
442e4d9c | 9717 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9718 | |
257e7a09 | 9719 | psymtab_to_symtab_1 (self); |
c906108c | 9720 | |
442e4d9c YQ |
9721 | /* Finish up the debug error message. */ |
9722 | if (info_verbose) | |
9723 | printf_filtered (_("done.\n")); | |
c906108c | 9724 | } |
95554aad TT |
9725 | |
9726 | process_cu_includes (); | |
c906108c | 9727 | } |
9cdd5dbd DE |
9728 | \f |
9729 | /* Reading in full CUs. */ | |
c906108c | 9730 | |
10b3939b DJ |
9731 | /* Add PER_CU to the queue. */ |
9732 | ||
9733 | static void | |
95554aad TT |
9734 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9735 | enum language pretend_language) | |
10b3939b DJ |
9736 | { |
9737 | struct dwarf2_queue_item *item; | |
9738 | ||
9739 | per_cu->queued = 1; | |
8d749320 | 9740 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9741 | item->per_cu = per_cu; |
95554aad | 9742 | item->pretend_language = pretend_language; |
10b3939b DJ |
9743 | item->next = NULL; |
9744 | ||
9745 | if (dwarf2_queue == NULL) | |
9746 | dwarf2_queue = item; | |
9747 | else | |
9748 | dwarf2_queue_tail->next = item; | |
9749 | ||
9750 | dwarf2_queue_tail = item; | |
9751 | } | |
9752 | ||
89e63ee4 DE |
9753 | /* If PER_CU is not yet queued, add it to the queue. |
9754 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9755 | dependency. | |
0907af0c | 9756 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9757 | meaning either PER_CU is already queued or it is already loaded. |
9758 | ||
9759 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9760 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9761 | |
9762 | static int | |
89e63ee4 | 9763 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9764 | struct dwarf2_per_cu_data *per_cu, |
9765 | enum language pretend_language) | |
9766 | { | |
9767 | /* We may arrive here during partial symbol reading, if we need full | |
9768 | DIEs to process an unusual case (e.g. template arguments). Do | |
9769 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
9770 | if (dwarf2_per_objfile->reading_partial_symbols) | |
9771 | { | |
9772 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9773 | return 1; | |
9774 | return 0; | |
9775 | } | |
9776 | ||
9777 | /* Mark the dependence relation so that we don't flush PER_CU | |
9778 | too early. */ | |
89e63ee4 DE |
9779 | if (dependent_cu != NULL) |
9780 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9781 | |
9782 | /* If it's already on the queue, we have nothing to do. */ | |
9783 | if (per_cu->queued) | |
9784 | return 0; | |
9785 | ||
9786 | /* If the compilation unit is already loaded, just mark it as | |
9787 | used. */ | |
9788 | if (per_cu->cu != NULL) | |
9789 | { | |
9790 | per_cu->cu->last_used = 0; | |
9791 | return 0; | |
9792 | } | |
9793 | ||
9794 | /* Add it to the queue. */ | |
9795 | queue_comp_unit (per_cu, pretend_language); | |
9796 | ||
9797 | return 1; | |
9798 | } | |
9799 | ||
10b3939b DJ |
9800 | /* Process the queue. */ |
9801 | ||
9802 | static void | |
a0f42c21 | 9803 | process_queue (void) |
10b3939b DJ |
9804 | { |
9805 | struct dwarf2_queue_item *item, *next_item; | |
9806 | ||
b4f54984 | 9807 | if (dwarf_read_debug) |
45cfd468 DE |
9808 | { |
9809 | fprintf_unfiltered (gdb_stdlog, | |
9810 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9811 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9812 | } |
9813 | ||
03dd20cc DJ |
9814 | /* The queue starts out with one item, but following a DIE reference |
9815 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9816 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9817 | { | |
cc12ce38 DE |
9818 | if ((dwarf2_per_objfile->using_index |
9819 | ? !item->per_cu->v.quick->compunit_symtab | |
9820 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9821 | /* Skip dummy CUs. */ | |
9822 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9823 | { |
9824 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9825 | unsigned int debug_print_threshold; |
247f5c4f | 9826 | char buf[100]; |
f4dc4d17 | 9827 | |
247f5c4f | 9828 | if (per_cu->is_debug_types) |
f4dc4d17 | 9829 | { |
247f5c4f DE |
9830 | struct signatured_type *sig_type = |
9831 | (struct signatured_type *) per_cu; | |
9832 | ||
9833 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 | 9834 | hex_string (sig_type->signature), |
9c541725 | 9835 | to_underlying (per_cu->sect_off)); |
73be47f5 DE |
9836 | /* There can be 100s of TUs. |
9837 | Only print them in verbose mode. */ | |
9838 | debug_print_threshold = 2; | |
f4dc4d17 | 9839 | } |
247f5c4f | 9840 | else |
73be47f5 | 9841 | { |
9c541725 PA |
9842 | sprintf (buf, "CU at offset 0x%x", |
9843 | to_underlying (per_cu->sect_off)); | |
73be47f5 DE |
9844 | debug_print_threshold = 1; |
9845 | } | |
247f5c4f | 9846 | |
b4f54984 | 9847 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9848 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9849 | |
9850 | if (per_cu->is_debug_types) | |
9851 | process_full_type_unit (per_cu, item->pretend_language); | |
9852 | else | |
9853 | process_full_comp_unit (per_cu, item->pretend_language); | |
9854 | ||
b4f54984 | 9855 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9856 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9857 | } |
10b3939b DJ |
9858 | |
9859 | item->per_cu->queued = 0; | |
9860 | next_item = item->next; | |
9861 | xfree (item); | |
9862 | } | |
9863 | ||
9864 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9865 | |
b4f54984 | 9866 | if (dwarf_read_debug) |
45cfd468 DE |
9867 | { |
9868 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9869 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9870 | } |
10b3939b DJ |
9871 | } |
9872 | ||
9873 | /* Free all allocated queue entries. This function only releases anything if | |
9874 | an error was thrown; if the queue was processed then it would have been | |
9875 | freed as we went along. */ | |
9876 | ||
9877 | static void | |
9878 | dwarf2_release_queue (void *dummy) | |
9879 | { | |
9880 | struct dwarf2_queue_item *item, *last; | |
9881 | ||
9882 | item = dwarf2_queue; | |
9883 | while (item) | |
9884 | { | |
9885 | /* Anything still marked queued is likely to be in an | |
9886 | inconsistent state, so discard it. */ | |
9887 | if (item->per_cu->queued) | |
9888 | { | |
9889 | if (item->per_cu->cu != NULL) | |
dee91e82 | 9890 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
9891 | item->per_cu->queued = 0; |
9892 | } | |
9893 | ||
9894 | last = item; | |
9895 | item = item->next; | |
9896 | xfree (last); | |
9897 | } | |
9898 | ||
9899 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
9900 | } | |
9901 | ||
9902 | /* Read in full symbols for PST, and anything it depends on. */ | |
9903 | ||
c906108c | 9904 | static void |
fba45db2 | 9905 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9906 | { |
10b3939b | 9907 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9908 | int i; |
9909 | ||
95554aad TT |
9910 | if (pst->readin) |
9911 | return; | |
9912 | ||
aaa75496 | 9913 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9914 | if (!pst->dependencies[i]->readin |
9915 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9916 | { |
9917 | /* Inform about additional files that need to be read in. */ | |
9918 | if (info_verbose) | |
9919 | { | |
a3f17187 | 9920 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9921 | fputs_filtered (" ", gdb_stdout); |
9922 | wrap_here (""); | |
9923 | fputs_filtered ("and ", gdb_stdout); | |
9924 | wrap_here (""); | |
9925 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9926 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9927 | gdb_flush (gdb_stdout); |
9928 | } | |
9929 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9930 | } | |
9931 | ||
9a3c8263 | 9932 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9933 | |
9934 | if (per_cu == NULL) | |
aaa75496 JB |
9935 | { |
9936 | /* It's an include file, no symbols to read for it. | |
9937 | Everything is in the parent symtab. */ | |
9938 | pst->readin = 1; | |
9939 | return; | |
9940 | } | |
c906108c | 9941 | |
a0f42c21 | 9942 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
9943 | } |
9944 | ||
dee91e82 DE |
9945 | /* Trivial hash function for die_info: the hash value of a DIE |
9946 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9947 | |
dee91e82 DE |
9948 | static hashval_t |
9949 | die_hash (const void *item) | |
10b3939b | 9950 | { |
9a3c8263 | 9951 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9952 | |
9c541725 | 9953 | return to_underlying (die->sect_off); |
dee91e82 | 9954 | } |
63d06c5c | 9955 | |
dee91e82 DE |
9956 | /* Trivial comparison function for die_info structures: two DIEs |
9957 | are equal if they have the same offset. */ | |
98bfdba5 | 9958 | |
dee91e82 DE |
9959 | static int |
9960 | die_eq (const void *item_lhs, const void *item_rhs) | |
9961 | { | |
9a3c8263 SM |
9962 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9963 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9964 | |
9c541725 | 9965 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9966 | } |
c906108c | 9967 | |
dee91e82 DE |
9968 | /* die_reader_func for load_full_comp_unit. |
9969 | This is identical to read_signatured_type_reader, | |
9970 | but is kept separate for now. */ | |
c906108c | 9971 | |
dee91e82 DE |
9972 | static void |
9973 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9974 | const gdb_byte *info_ptr, |
dee91e82 DE |
9975 | struct die_info *comp_unit_die, |
9976 | int has_children, | |
9977 | void *data) | |
9978 | { | |
9979 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9980 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9981 | |
dee91e82 DE |
9982 | gdb_assert (cu->die_hash == NULL); |
9983 | cu->die_hash = | |
9984 | htab_create_alloc_ex (cu->header.length / 12, | |
9985 | die_hash, | |
9986 | die_eq, | |
9987 | NULL, | |
9988 | &cu->comp_unit_obstack, | |
9989 | hashtab_obstack_allocate, | |
9990 | dummy_obstack_deallocate); | |
e142c38c | 9991 | |
dee91e82 DE |
9992 | if (has_children) |
9993 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9994 | &info_ptr, comp_unit_die); | |
9995 | cu->dies = comp_unit_die; | |
9996 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9997 | |
9998 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9999 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 10000 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
10001 | or we won't be able to build types correctly. |
10002 | Similarly, if we do not read the producer, we can not apply | |
10003 | producer-specific interpretation. */ | |
95554aad | 10004 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 10005 | } |
10b3939b | 10006 | |
dee91e82 | 10007 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 10008 | |
dee91e82 | 10009 | static void |
95554aad TT |
10010 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
10011 | enum language pretend_language) | |
dee91e82 | 10012 | { |
3019eac3 | 10013 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 10014 | |
f4dc4d17 DE |
10015 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
10016 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
10017 | } |
10018 | ||
3da10d80 KS |
10019 | /* Add a DIE to the delayed physname list. */ |
10020 | ||
10021 | static void | |
10022 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
10023 | const char *name, struct die_info *die, | |
10024 | struct dwarf2_cu *cu) | |
10025 | { | |
10026 | struct delayed_method_info mi; | |
10027 | mi.type = type; | |
10028 | mi.fnfield_index = fnfield_index; | |
10029 | mi.index = index; | |
10030 | mi.name = name; | |
10031 | mi.die = die; | |
10032 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
10033 | } | |
10034 | ||
10035 | /* A cleanup for freeing the delayed method list. */ | |
10036 | ||
10037 | static void | |
10038 | free_delayed_list (void *ptr) | |
10039 | { | |
10040 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
10041 | if (cu->method_list != NULL) | |
10042 | { | |
10043 | VEC_free (delayed_method_info, cu->method_list); | |
10044 | cu->method_list = NULL; | |
10045 | } | |
10046 | } | |
10047 | ||
3693fdb3 PA |
10048 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
10049 | "const" / "volatile". If so, decrements LEN by the length of the | |
10050 | modifier and return true. Otherwise return false. */ | |
10051 | ||
10052 | template<size_t N> | |
10053 | static bool | |
10054 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
10055 | { | |
10056 | size_t mod_len = sizeof (mod) - 1; | |
10057 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
10058 | { | |
10059 | len -= mod_len; | |
10060 | return true; | |
10061 | } | |
10062 | return false; | |
10063 | } | |
10064 | ||
3da10d80 KS |
10065 | /* Compute the physnames of any methods on the CU's method list. |
10066 | ||
10067 | The computation of method physnames is delayed in order to avoid the | |
10068 | (bad) condition that one of the method's formal parameters is of an as yet | |
10069 | incomplete type. */ | |
10070 | ||
10071 | static void | |
10072 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
10073 | { | |
10074 | int i; | |
10075 | struct delayed_method_info *mi; | |
3693fdb3 PA |
10076 | |
10077 | /* Only C++ delays computing physnames. */ | |
10078 | if (VEC_empty (delayed_method_info, cu->method_list)) | |
10079 | return; | |
10080 | gdb_assert (cu->language == language_cplus); | |
10081 | ||
3da10d80 KS |
10082 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) |
10083 | { | |
1d06ead6 | 10084 | const char *physname; |
3da10d80 KS |
10085 | struct fn_fieldlist *fn_flp |
10086 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 10087 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
10088 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
10089 | = physname ? physname : ""; | |
3693fdb3 PA |
10090 | |
10091 | /* Since there's no tag to indicate whether a method is a | |
10092 | const/volatile overload, extract that information out of the | |
10093 | demangled name. */ | |
10094 | if (physname != NULL) | |
10095 | { | |
10096 | size_t len = strlen (physname); | |
10097 | ||
10098 | while (1) | |
10099 | { | |
10100 | if (physname[len] == ')') /* shortcut */ | |
10101 | break; | |
10102 | else if (check_modifier (physname, len, " const")) | |
10103 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi->index) = 1; | |
10104 | else if (check_modifier (physname, len, " volatile")) | |
10105 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi->index) = 1; | |
10106 | else | |
10107 | break; | |
10108 | } | |
10109 | } | |
3da10d80 KS |
10110 | } |
10111 | } | |
10112 | ||
a766d390 DE |
10113 | /* Go objects should be embedded in a DW_TAG_module DIE, |
10114 | and it's not clear if/how imported objects will appear. | |
10115 | To keep Go support simple until that's worked out, | |
10116 | go back through what we've read and create something usable. | |
10117 | We could do this while processing each DIE, and feels kinda cleaner, | |
10118 | but that way is more invasive. | |
10119 | This is to, for example, allow the user to type "p var" or "b main" | |
10120 | without having to specify the package name, and allow lookups | |
10121 | of module.object to work in contexts that use the expression | |
10122 | parser. */ | |
10123 | ||
10124 | static void | |
10125 | fixup_go_packaging (struct dwarf2_cu *cu) | |
10126 | { | |
10127 | char *package_name = NULL; | |
10128 | struct pending *list; | |
10129 | int i; | |
10130 | ||
10131 | for (list = global_symbols; list != NULL; list = list->next) | |
10132 | { | |
10133 | for (i = 0; i < list->nsyms; ++i) | |
10134 | { | |
10135 | struct symbol *sym = list->symbol[i]; | |
10136 | ||
10137 | if (SYMBOL_LANGUAGE (sym) == language_go | |
10138 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
10139 | { | |
10140 | char *this_package_name = go_symbol_package_name (sym); | |
10141 | ||
10142 | if (this_package_name == NULL) | |
10143 | continue; | |
10144 | if (package_name == NULL) | |
10145 | package_name = this_package_name; | |
10146 | else | |
10147 | { | |
10148 | if (strcmp (package_name, this_package_name) != 0) | |
10149 | complaint (&symfile_complaints, | |
10150 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
10151 | (symbol_symtab (sym) != NULL |
10152 | ? symtab_to_filename_for_display | |
10153 | (symbol_symtab (sym)) | |
4262abfb | 10154 | : objfile_name (cu->objfile)), |
a766d390 DE |
10155 | this_package_name, package_name); |
10156 | xfree (this_package_name); | |
10157 | } | |
10158 | } | |
10159 | } | |
10160 | } | |
10161 | ||
10162 | if (package_name != NULL) | |
10163 | { | |
10164 | struct objfile *objfile = cu->objfile; | |
34a68019 | 10165 | const char *saved_package_name |
224c3ddb SM |
10166 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
10167 | package_name, | |
10168 | strlen (package_name)); | |
19f392bc UW |
10169 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
10170 | saved_package_name); | |
a766d390 DE |
10171 | struct symbol *sym; |
10172 | ||
10173 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10174 | ||
e623cf5d | 10175 | sym = allocate_symbol (objfile); |
f85f34ed | 10176 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
10177 | SYMBOL_SET_NAMES (sym, saved_package_name, |
10178 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
10179 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
10180 | e.g., "main" finds the "main" module and not C's main(). */ | |
10181 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 10182 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
10183 | SYMBOL_TYPE (sym) = type; |
10184 | ||
10185 | add_symbol_to_list (sym, &global_symbols); | |
10186 | ||
10187 | xfree (package_name); | |
10188 | } | |
10189 | } | |
10190 | ||
95554aad TT |
10191 | /* Return the symtab for PER_CU. This works properly regardless of |
10192 | whether we're using the index or psymtabs. */ | |
10193 | ||
43f3e411 DE |
10194 | static struct compunit_symtab * |
10195 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
10196 | { |
10197 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
10198 | ? per_cu->v.quick->compunit_symtab |
10199 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10200 | } |
10201 | ||
10202 | /* A helper function for computing the list of all symbol tables | |
10203 | included by PER_CU. */ | |
10204 | ||
10205 | static void | |
43f3e411 | 10206 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10207 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10208 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10209 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10210 | { |
10211 | void **slot; | |
10212 | int ix; | |
43f3e411 | 10213 | struct compunit_symtab *cust; |
95554aad TT |
10214 | struct dwarf2_per_cu_data *iter; |
10215 | ||
10216 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10217 | if (*slot != NULL) | |
10218 | { | |
10219 | /* This inclusion and its children have been processed. */ | |
10220 | return; | |
10221 | } | |
10222 | ||
10223 | *slot = per_cu; | |
10224 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10225 | cust = get_compunit_symtab (per_cu); |
10226 | if (cust != NULL) | |
ec94af83 DE |
10227 | { |
10228 | /* If this is a type unit only add its symbol table if we haven't | |
10229 | seen it yet (type unit per_cu's can share symtabs). */ | |
10230 | if (per_cu->is_debug_types) | |
10231 | { | |
43f3e411 | 10232 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10233 | if (*slot == NULL) |
10234 | { | |
43f3e411 DE |
10235 | *slot = cust; |
10236 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10237 | if (cust->user == NULL) | |
10238 | cust->user = immediate_parent; | |
ec94af83 DE |
10239 | } |
10240 | } | |
10241 | else | |
f9125b6c | 10242 | { |
43f3e411 DE |
10243 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10244 | if (cust->user == NULL) | |
10245 | cust->user = immediate_parent; | |
f9125b6c | 10246 | } |
ec94af83 | 10247 | } |
95554aad TT |
10248 | |
10249 | for (ix = 0; | |
796a7ff8 | 10250 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10251 | ++ix) |
ec94af83 DE |
10252 | { |
10253 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10254 | all_type_symtabs, iter, cust); |
ec94af83 | 10255 | } |
95554aad TT |
10256 | } |
10257 | ||
43f3e411 | 10258 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10259 | PER_CU. */ |
10260 | ||
10261 | static void | |
43f3e411 | 10262 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10263 | { |
f4dc4d17 DE |
10264 | gdb_assert (! per_cu->is_debug_types); |
10265 | ||
796a7ff8 | 10266 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10267 | { |
10268 | int ix, len; | |
ec94af83 | 10269 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10270 | struct compunit_symtab *compunit_symtab_iter; |
10271 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10272 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10273 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10274 | |
10275 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10276 | if (cust == NULL) |
95554aad TT |
10277 | return; |
10278 | ||
10279 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10280 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10281 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10282 | NULL, xcalloc, xfree); | |
95554aad TT |
10283 | |
10284 | for (ix = 0; | |
796a7ff8 | 10285 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10286 | ix, per_cu_iter); |
95554aad | 10287 | ++ix) |
ec94af83 DE |
10288 | { |
10289 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10290 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10291 | cust); |
ec94af83 | 10292 | } |
95554aad | 10293 | |
ec94af83 | 10294 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10295 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10296 | cust->includes | |
8d749320 SM |
10297 | = XOBNEWVEC (&dwarf2_per_objfile->objfile->objfile_obstack, |
10298 | struct compunit_symtab *, len + 1); | |
95554aad | 10299 | for (ix = 0; |
43f3e411 DE |
10300 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10301 | compunit_symtab_iter); | |
95554aad | 10302 | ++ix) |
43f3e411 DE |
10303 | cust->includes[ix] = compunit_symtab_iter; |
10304 | cust->includes[len] = NULL; | |
95554aad | 10305 | |
43f3e411 | 10306 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10307 | htab_delete (all_children); |
ec94af83 | 10308 | htab_delete (all_type_symtabs); |
95554aad TT |
10309 | } |
10310 | } | |
10311 | ||
10312 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10313 | read. */ | |
10314 | ||
10315 | static void | |
10316 | process_cu_includes (void) | |
10317 | { | |
10318 | int ix; | |
10319 | struct dwarf2_per_cu_data *iter; | |
10320 | ||
10321 | for (ix = 0; | |
10322 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
10323 | ix, iter); | |
10324 | ++ix) | |
f4dc4d17 DE |
10325 | { |
10326 | if (! iter->is_debug_types) | |
43f3e411 | 10327 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10328 | } |
95554aad TT |
10329 | |
10330 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
10331 | } | |
10332 | ||
9cdd5dbd | 10333 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10334 | already been loaded into memory. */ |
10335 | ||
10336 | static void | |
95554aad TT |
10337 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10338 | enum language pretend_language) | |
10b3939b | 10339 | { |
10b3939b | 10340 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 10341 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 10342 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10343 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10344 | struct compunit_symtab *cust; |
33c7c59d | 10345 | struct cleanup *delayed_list_cleanup; |
10b3939b | 10346 | CORE_ADDR baseaddr; |
4359dff1 | 10347 | struct block *static_block; |
3e29f34a | 10348 | CORE_ADDR addr; |
10b3939b DJ |
10349 | |
10350 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10351 | ||
10b3939b | 10352 | buildsym_init (); |
33c7c59d | 10353 | scoped_free_pendings free_pending; |
3da10d80 | 10354 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
10355 | |
10356 | cu->list_in_scope = &file_symbols; | |
c906108c | 10357 | |
95554aad TT |
10358 | cu->language = pretend_language; |
10359 | cu->language_defn = language_def (cu->language); | |
10360 | ||
c906108c | 10361 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10362 | process_die (cu->dies, cu); |
c906108c | 10363 | |
a766d390 DE |
10364 | /* For now fudge the Go package. */ |
10365 | if (cu->language == language_go) | |
10366 | fixup_go_packaging (cu); | |
10367 | ||
3da10d80 KS |
10368 | /* Now that we have processed all the DIEs in the CU, all the types |
10369 | should be complete, and it should now be safe to compute all of the | |
10370 | physnames. */ | |
10371 | compute_delayed_physnames (cu); | |
10372 | do_cleanups (delayed_list_cleanup); | |
10373 | ||
fae299cd DC |
10374 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10375 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10376 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10377 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10378 | |
3e29f34a MR |
10379 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
10380 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
10381 | |
10382 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10383 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10384 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10385 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10386 | this comp unit. */ | |
10387 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10388 | ||
43f3e411 DE |
10389 | cust = end_symtab_from_static_block (static_block, |
10390 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 10391 | |
43f3e411 | 10392 | if (cust != NULL) |
c906108c | 10393 | { |
df15bd07 | 10394 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10395 | |
8be455d7 JK |
10396 | /* Set symtab language to language from DW_AT_language. If the |
10397 | compilation is from a C file generated by language preprocessors, do | |
10398 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10399 | if (!(cu->language == language_c |
40e3ad0e | 10400 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10401 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10402 | |
10403 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10404 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10405 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10406 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10407 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10408 | |
10409 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10410 | needed, it would be wrong due to missing DW_AT_producer there. | |
10411 | ||
10412 | Still one can confuse GDB by using non-standard GCC compilation | |
10413 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10414 | */ | |
ab260dad | 10415 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10416 | cust->locations_valid = 1; |
e0d00bc7 JK |
10417 | |
10418 | if (gcc_4_minor >= 5) | |
43f3e411 | 10419 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10420 | |
43f3e411 | 10421 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10422 | } |
9291a0cd TT |
10423 | |
10424 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10425 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10426 | else |
10427 | { | |
10428 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10429 | pst->compunit_symtab = cust; |
9291a0cd TT |
10430 | pst->readin = 1; |
10431 | } | |
c906108c | 10432 | |
95554aad TT |
10433 | /* Push it for inclusion processing later. */ |
10434 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
f4dc4d17 | 10435 | } |
45cfd468 | 10436 | |
f4dc4d17 DE |
10437 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10438 | already been loaded into memory. */ | |
10439 | ||
10440 | static void | |
10441 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10442 | enum language pretend_language) | |
10443 | { | |
10444 | struct dwarf2_cu *cu = per_cu->cu; | |
10445 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 10446 | struct compunit_symtab *cust; |
33c7c59d | 10447 | struct cleanup *delayed_list_cleanup; |
0186c6a7 DE |
10448 | struct signatured_type *sig_type; |
10449 | ||
10450 | gdb_assert (per_cu->is_debug_types); | |
10451 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
10452 | |
10453 | buildsym_init (); | |
33c7c59d | 10454 | scoped_free_pendings free_pending; |
f4dc4d17 DE |
10455 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10456 | ||
10457 | cu->list_in_scope = &file_symbols; | |
10458 | ||
10459 | cu->language = pretend_language; | |
10460 | cu->language_defn = language_def (cu->language); | |
10461 | ||
10462 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10463 | process_die (cu->dies, cu); | |
10464 | ||
10465 | /* For now fudge the Go package. */ | |
10466 | if (cu->language == language_go) | |
10467 | fixup_go_packaging (cu); | |
10468 | ||
10469 | /* Now that we have processed all the DIEs in the CU, all the types | |
10470 | should be complete, and it should now be safe to compute all of the | |
10471 | physnames. */ | |
10472 | compute_delayed_physnames (cu); | |
10473 | do_cleanups (delayed_list_cleanup); | |
10474 | ||
10475 | /* TUs share symbol tables. | |
10476 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10477 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10478 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10479 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10480 | { |
43f3e411 DE |
10481 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
10482 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 10483 | |
43f3e411 | 10484 | if (cust != NULL) |
f4dc4d17 DE |
10485 | { |
10486 | /* Set symtab language to language from DW_AT_language. If the | |
10487 | compilation is from a C file generated by language preprocessors, | |
10488 | do not set the language if it was already deduced by | |
10489 | start_subfile. */ | |
43f3e411 DE |
10490 | if (!(cu->language == language_c |
10491 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10492 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10493 | } |
10494 | } | |
10495 | else | |
10496 | { | |
0ab9ce85 | 10497 | augment_type_symtab (); |
43f3e411 | 10498 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10499 | } |
10500 | ||
10501 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10502 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10503 | else |
10504 | { | |
10505 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10506 | pst->compunit_symtab = cust; |
f4dc4d17 | 10507 | pst->readin = 1; |
45cfd468 | 10508 | } |
c906108c SS |
10509 | } |
10510 | ||
95554aad TT |
10511 | /* Process an imported unit DIE. */ |
10512 | ||
10513 | static void | |
10514 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10515 | { | |
10516 | struct attribute *attr; | |
10517 | ||
f4dc4d17 DE |
10518 | /* For now we don't handle imported units in type units. */ |
10519 | if (cu->per_cu->is_debug_types) | |
10520 | { | |
10521 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10522 | " supported in type units [in module %s]"), | |
4262abfb | 10523 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
10524 | } |
10525 | ||
95554aad TT |
10526 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10527 | if (attr != NULL) | |
10528 | { | |
9c541725 PA |
10529 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10530 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10531 | dwarf2_per_cu_data *per_cu | |
10532 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, cu->objfile); | |
95554aad | 10533 | |
69d751e3 | 10534 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
10535 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
10536 | load_full_comp_unit (per_cu, cu->language); | |
10537 | ||
796a7ff8 | 10538 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10539 | per_cu); |
10540 | } | |
10541 | } | |
10542 | ||
4c8aa72d PA |
10543 | /* RAII object that represents a process_die scope: i.e., |
10544 | starts/finishes processing a DIE. */ | |
10545 | class process_die_scope | |
adde2bff | 10546 | { |
4c8aa72d PA |
10547 | public: |
10548 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10549 | : m_die (die), m_cu (cu) | |
10550 | { | |
10551 | /* We should only be processing DIEs not already in process. */ | |
10552 | gdb_assert (!m_die->in_process); | |
10553 | m_die->in_process = true; | |
10554 | } | |
8c3cb9fa | 10555 | |
4c8aa72d PA |
10556 | ~process_die_scope () |
10557 | { | |
10558 | m_die->in_process = false; | |
10559 | ||
10560 | /* If we're done processing the DIE for the CU that owns the line | |
10561 | header, we don't need the line header anymore. */ | |
10562 | if (m_cu->line_header_die_owner == m_die) | |
10563 | { | |
10564 | delete m_cu->line_header; | |
10565 | m_cu->line_header = NULL; | |
10566 | m_cu->line_header_die_owner = NULL; | |
10567 | } | |
10568 | } | |
10569 | ||
10570 | private: | |
10571 | die_info *m_die; | |
10572 | dwarf2_cu *m_cu; | |
10573 | }; | |
adde2bff | 10574 | |
c906108c SS |
10575 | /* Process a die and its children. */ |
10576 | ||
10577 | static void | |
e7c27a73 | 10578 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10579 | { |
4c8aa72d | 10580 | process_die_scope scope (die, cu); |
adde2bff | 10581 | |
c906108c SS |
10582 | switch (die->tag) |
10583 | { | |
10584 | case DW_TAG_padding: | |
10585 | break; | |
10586 | case DW_TAG_compile_unit: | |
95554aad | 10587 | case DW_TAG_partial_unit: |
e7c27a73 | 10588 | read_file_scope (die, cu); |
c906108c | 10589 | break; |
348e048f DE |
10590 | case DW_TAG_type_unit: |
10591 | read_type_unit_scope (die, cu); | |
10592 | break; | |
c906108c | 10593 | case DW_TAG_subprogram: |
c906108c | 10594 | case DW_TAG_inlined_subroutine: |
edb3359d | 10595 | read_func_scope (die, cu); |
c906108c SS |
10596 | break; |
10597 | case DW_TAG_lexical_block: | |
14898363 L |
10598 | case DW_TAG_try_block: |
10599 | case DW_TAG_catch_block: | |
e7c27a73 | 10600 | read_lexical_block_scope (die, cu); |
c906108c | 10601 | break; |
216f72a1 | 10602 | case DW_TAG_call_site: |
96408a79 SA |
10603 | case DW_TAG_GNU_call_site: |
10604 | read_call_site_scope (die, cu); | |
10605 | break; | |
c906108c | 10606 | case DW_TAG_class_type: |
680b30c7 | 10607 | case DW_TAG_interface_type: |
c906108c SS |
10608 | case DW_TAG_structure_type: |
10609 | case DW_TAG_union_type: | |
134d01f1 | 10610 | process_structure_scope (die, cu); |
c906108c SS |
10611 | break; |
10612 | case DW_TAG_enumeration_type: | |
134d01f1 | 10613 | process_enumeration_scope (die, cu); |
c906108c | 10614 | break; |
134d01f1 | 10615 | |
f792889a DJ |
10616 | /* These dies have a type, but processing them does not create |
10617 | a symbol or recurse to process the children. Therefore we can | |
10618 | read them on-demand through read_type_die. */ | |
c906108c | 10619 | case DW_TAG_subroutine_type: |
72019c9c | 10620 | case DW_TAG_set_type: |
c906108c | 10621 | case DW_TAG_array_type: |
c906108c | 10622 | case DW_TAG_pointer_type: |
c906108c | 10623 | case DW_TAG_ptr_to_member_type: |
c906108c | 10624 | case DW_TAG_reference_type: |
4297a3f0 | 10625 | case DW_TAG_rvalue_reference_type: |
c906108c | 10626 | case DW_TAG_string_type: |
c906108c | 10627 | break; |
134d01f1 | 10628 | |
c906108c | 10629 | case DW_TAG_base_type: |
a02abb62 | 10630 | case DW_TAG_subrange_type: |
cb249c71 | 10631 | case DW_TAG_typedef: |
134d01f1 DJ |
10632 | /* Add a typedef symbol for the type definition, if it has a |
10633 | DW_AT_name. */ | |
f792889a | 10634 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10635 | break; |
c906108c | 10636 | case DW_TAG_common_block: |
e7c27a73 | 10637 | read_common_block (die, cu); |
c906108c SS |
10638 | break; |
10639 | case DW_TAG_common_inclusion: | |
10640 | break; | |
d9fa45fe | 10641 | case DW_TAG_namespace: |
4d4ec4e5 | 10642 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 10643 | read_namespace (die, cu); |
d9fa45fe | 10644 | break; |
5d7cb8df | 10645 | case DW_TAG_module: |
4d4ec4e5 | 10646 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
10647 | read_module (die, cu); |
10648 | break; | |
d9fa45fe | 10649 | case DW_TAG_imported_declaration: |
74921315 KS |
10650 | cu->processing_has_namespace_info = 1; |
10651 | if (read_namespace_alias (die, cu)) | |
10652 | break; | |
10653 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 10654 | case DW_TAG_imported_module: |
4d4ec4e5 | 10655 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
10656 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10657 | || cu->language != language_fortran)) | |
10658 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
10659 | dwarf_tag_name (die->tag)); | |
10660 | read_import_statement (die, cu); | |
d9fa45fe | 10661 | break; |
95554aad TT |
10662 | |
10663 | case DW_TAG_imported_unit: | |
10664 | process_imported_unit_die (die, cu); | |
10665 | break; | |
10666 | ||
71a3c369 TT |
10667 | case DW_TAG_variable: |
10668 | read_variable (die, cu); | |
10669 | break; | |
10670 | ||
c906108c | 10671 | default: |
e7c27a73 | 10672 | new_symbol (die, NULL, cu); |
c906108c SS |
10673 | break; |
10674 | } | |
10675 | } | |
ca69b9e6 DE |
10676 | \f |
10677 | /* DWARF name computation. */ | |
c906108c | 10678 | |
94af9270 KS |
10679 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10680 | needs to have the name of the scope prepended to the name listed in the | |
10681 | die. */ | |
10682 | ||
10683 | static int | |
10684 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10685 | { | |
1c809c68 TT |
10686 | struct attribute *attr; |
10687 | ||
94af9270 KS |
10688 | switch (die->tag) |
10689 | { | |
10690 | case DW_TAG_namespace: | |
10691 | case DW_TAG_typedef: | |
10692 | case DW_TAG_class_type: | |
10693 | case DW_TAG_interface_type: | |
10694 | case DW_TAG_structure_type: | |
10695 | case DW_TAG_union_type: | |
10696 | case DW_TAG_enumeration_type: | |
10697 | case DW_TAG_enumerator: | |
10698 | case DW_TAG_subprogram: | |
08a76f8a | 10699 | case DW_TAG_inlined_subroutine: |
94af9270 | 10700 | case DW_TAG_member: |
74921315 | 10701 | case DW_TAG_imported_declaration: |
94af9270 KS |
10702 | return 1; |
10703 | ||
10704 | case DW_TAG_variable: | |
c2b0a229 | 10705 | case DW_TAG_constant: |
94af9270 KS |
10706 | /* We only need to prefix "globally" visible variables. These include |
10707 | any variable marked with DW_AT_external or any variable that | |
10708 | lives in a namespace. [Variables in anonymous namespaces | |
10709 | require prefixing, but they are not DW_AT_external.] */ | |
10710 | ||
10711 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10712 | { | |
10713 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10714 | |
94af9270 KS |
10715 | return die_needs_namespace (die_specification (die, &spec_cu), |
10716 | spec_cu); | |
10717 | } | |
10718 | ||
1c809c68 | 10719 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10720 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10721 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10722 | return 0; |
10723 | /* A variable in a lexical block of some kind does not need a | |
10724 | namespace, even though in C++ such variables may be external | |
10725 | and have a mangled name. */ | |
10726 | if (die->parent->tag == DW_TAG_lexical_block | |
10727 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10728 | || die->parent->tag == DW_TAG_catch_block |
10729 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10730 | return 0; |
10731 | return 1; | |
94af9270 KS |
10732 | |
10733 | default: | |
10734 | return 0; | |
10735 | } | |
10736 | } | |
10737 | ||
73b9be8b KS |
10738 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10739 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10740 | defined for the given DIE. */ | |
10741 | ||
10742 | static struct attribute * | |
10743 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10744 | { | |
10745 | struct attribute *attr; | |
10746 | ||
10747 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10748 | if (attr == NULL) | |
10749 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10750 | ||
10751 | return attr; | |
10752 | } | |
10753 | ||
10754 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10755 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10756 | defined for the given DIE. */ | |
10757 | ||
10758 | static const char * | |
10759 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10760 | { | |
10761 | const char *linkage_name; | |
10762 | ||
10763 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10764 | if (linkage_name == NULL) | |
10765 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10766 | ||
10767 | return linkage_name; | |
10768 | } | |
10769 | ||
94af9270 | 10770 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10771 | compute the physname for the object, which include a method's: |
9c37b5ae | 10772 | - formal parameters (C++), |
a766d390 | 10773 | - receiver type (Go), |
a766d390 DE |
10774 | |
10775 | The term "physname" is a bit confusing. | |
10776 | For C++, for example, it is the demangled name. | |
10777 | For Go, for example, it's the mangled name. | |
94af9270 | 10778 | |
af6b7be1 JB |
10779 | For Ada, return the DIE's linkage name rather than the fully qualified |
10780 | name. PHYSNAME is ignored.. | |
10781 | ||
94af9270 KS |
10782 | The result is allocated on the objfile_obstack and canonicalized. */ |
10783 | ||
10784 | static const char * | |
15d034d0 TT |
10785 | dwarf2_compute_name (const char *name, |
10786 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10787 | int physname) |
10788 | { | |
bb5ed363 DE |
10789 | struct objfile *objfile = cu->objfile; |
10790 | ||
94af9270 KS |
10791 | if (name == NULL) |
10792 | name = dwarf2_name (die, cu); | |
10793 | ||
2ee7123e DE |
10794 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10795 | but otherwise compute it by typename_concat inside GDB. | |
10796 | FIXME: Actually this is not really true, or at least not always true. | |
10797 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
10798 | Fortran names because there is no mangling standard. So new_symbol_full | |
10799 | will set the demangled name to the result of dwarf2_full_name, and it is | |
10800 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10801 | if (cu->language == language_ada |
10802 | || (cu->language == language_fortran && physname)) | |
10803 | { | |
10804 | /* For Ada unit, we prefer the linkage name over the name, as | |
10805 | the former contains the exported name, which the user expects | |
10806 | to be able to reference. Ideally, we want the user to be able | |
10807 | to reference this entity using either natural or linkage name, | |
10808 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10809 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10810 | |
2ee7123e DE |
10811 | if (linkage_name != NULL) |
10812 | return linkage_name; | |
f55ee35c JK |
10813 | } |
10814 | ||
94af9270 KS |
10815 | /* These are the only languages we know how to qualify names in. */ |
10816 | if (name != NULL | |
9c37b5ae | 10817 | && (cu->language == language_cplus |
c44af4eb TT |
10818 | || cu->language == language_fortran || cu->language == language_d |
10819 | || cu->language == language_rust)) | |
94af9270 KS |
10820 | { |
10821 | if (die_needs_namespace (die, cu)) | |
10822 | { | |
0d5cff50 | 10823 | const char *prefix; |
34a68019 | 10824 | const char *canonical_name = NULL; |
94af9270 | 10825 | |
d7e74731 PA |
10826 | string_file buf; |
10827 | ||
94af9270 | 10828 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10829 | if (*prefix != '\0') |
10830 | { | |
f55ee35c JK |
10831 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10832 | physname, cu); | |
9a619af0 | 10833 | |
d7e74731 | 10834 | buf.puts (prefixed_name); |
94af9270 KS |
10835 | xfree (prefixed_name); |
10836 | } | |
10837 | else | |
d7e74731 | 10838 | buf.puts (name); |
94af9270 | 10839 | |
98bfdba5 PA |
10840 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10841 | as children with DW_TAG_template_type_param or | |
10842 | DW_TAG_value_type_param. If the latter, add them to the name | |
10843 | here. If the name already has template parameters, then | |
10844 | skip this step; some versions of GCC emit both, and | |
10845 | it is more efficient to use the pre-computed name. | |
10846 | ||
10847 | Something to keep in mind about this process: it is very | |
10848 | unlikely, or in some cases downright impossible, to produce | |
10849 | something that will match the mangled name of a function. | |
10850 | If the definition of the function has the same debug info, | |
10851 | we should be able to match up with it anyway. But fallbacks | |
10852 | using the minimal symbol, for instance to find a method | |
10853 | implemented in a stripped copy of libstdc++, will not work. | |
10854 | If we do not have debug info for the definition, we will have to | |
10855 | match them up some other way. | |
10856 | ||
10857 | When we do name matching there is a related problem with function | |
10858 | templates; two instantiated function templates are allowed to | |
10859 | differ only by their return types, which we do not add here. */ | |
10860 | ||
10861 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10862 | { | |
10863 | struct attribute *attr; | |
10864 | struct die_info *child; | |
10865 | int first = 1; | |
10866 | ||
10867 | die->building_fullname = 1; | |
10868 | ||
10869 | for (child = die->child; child != NULL; child = child->sibling) | |
10870 | { | |
10871 | struct type *type; | |
12df843f | 10872 | LONGEST value; |
d521ce57 | 10873 | const gdb_byte *bytes; |
98bfdba5 PA |
10874 | struct dwarf2_locexpr_baton *baton; |
10875 | struct value *v; | |
10876 | ||
10877 | if (child->tag != DW_TAG_template_type_param | |
10878 | && child->tag != DW_TAG_template_value_param) | |
10879 | continue; | |
10880 | ||
10881 | if (first) | |
10882 | { | |
d7e74731 | 10883 | buf.puts ("<"); |
98bfdba5 PA |
10884 | first = 0; |
10885 | } | |
10886 | else | |
d7e74731 | 10887 | buf.puts (", "); |
98bfdba5 PA |
10888 | |
10889 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10890 | if (attr == NULL) | |
10891 | { | |
10892 | complaint (&symfile_complaints, | |
10893 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 10894 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10895 | continue; |
10896 | } | |
10897 | type = die_type (child, cu); | |
10898 | ||
10899 | if (child->tag == DW_TAG_template_type_param) | |
10900 | { | |
d7e74731 | 10901 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
10902 | continue; |
10903 | } | |
10904 | ||
10905 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10906 | if (attr == NULL) | |
10907 | { | |
10908 | complaint (&symfile_complaints, | |
3e43a32a MS |
10909 | _("template parameter missing " |
10910 | "DW_AT_const_value")); | |
d7e74731 | 10911 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10912 | continue; |
10913 | } | |
10914 | ||
10915 | dwarf2_const_value_attr (attr, type, name, | |
10916 | &cu->comp_unit_obstack, cu, | |
10917 | &value, &bytes, &baton); | |
10918 | ||
10919 | if (TYPE_NOSIGN (type)) | |
10920 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10921 | changed, this can use value_print instead. */ | |
d7e74731 | 10922 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10923 | else |
10924 | { | |
10925 | struct value_print_options opts; | |
10926 | ||
10927 | if (baton != NULL) | |
10928 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10929 | baton->data, | |
10930 | baton->size, | |
10931 | baton->per_cu); | |
10932 | else if (bytes != NULL) | |
10933 | { | |
10934 | v = allocate_value (type); | |
10935 | memcpy (value_contents_writeable (v), bytes, | |
10936 | TYPE_LENGTH (type)); | |
10937 | } | |
10938 | else | |
10939 | v = value_from_longest (type, value); | |
10940 | ||
3e43a32a MS |
10941 | /* Specify decimal so that we do not depend on |
10942 | the radix. */ | |
98bfdba5 PA |
10943 | get_formatted_print_options (&opts, 'd'); |
10944 | opts.raw = 1; | |
d7e74731 | 10945 | value_print (v, &buf, &opts); |
98bfdba5 PA |
10946 | release_value (v); |
10947 | value_free (v); | |
10948 | } | |
10949 | } | |
10950 | ||
10951 | die->building_fullname = 0; | |
10952 | ||
10953 | if (!first) | |
10954 | { | |
10955 | /* Close the argument list, with a space if necessary | |
10956 | (nested templates). */ | |
d7e74731 PA |
10957 | if (!buf.empty () && buf.string ().back () == '>') |
10958 | buf.puts (" >"); | |
98bfdba5 | 10959 | else |
d7e74731 | 10960 | buf.puts (">"); |
98bfdba5 PA |
10961 | } |
10962 | } | |
10963 | ||
9c37b5ae | 10964 | /* For C++ methods, append formal parameter type |
94af9270 | 10965 | information, if PHYSNAME. */ |
6e70227d | 10966 | |
94af9270 | 10967 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10968 | && cu->language == language_cplus) |
94af9270 KS |
10969 | { |
10970 | struct type *type = read_type_die (die, cu); | |
10971 | ||
d7e74731 | 10972 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10973 | &type_print_raw_options); |
94af9270 | 10974 | |
9c37b5ae | 10975 | if (cu->language == language_cplus) |
94af9270 | 10976 | { |
60430eff DJ |
10977 | /* Assume that an artificial first parameter is |
10978 | "this", but do not crash if it is not. RealView | |
10979 | marks unnamed (and thus unused) parameters as | |
10980 | artificial; there is no way to differentiate | |
10981 | the two cases. */ | |
94af9270 KS |
10982 | if (TYPE_NFIELDS (type) > 0 |
10983 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10984 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10985 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10986 | 0)))) | |
d7e74731 | 10987 | buf.puts (" const"); |
94af9270 KS |
10988 | } |
10989 | } | |
10990 | ||
d7e74731 | 10991 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10992 | |
10993 | if (cu->language == language_cplus) | |
34a68019 | 10994 | canonical_name |
322a8516 | 10995 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10996 | &objfile->per_bfd->storage_obstack); |
10997 | ||
10998 | /* If we only computed INTERMEDIATE_NAME, or if | |
10999 | INTERMEDIATE_NAME is already canonical, then we need to | |
11000 | copy it to the appropriate obstack. */ | |
322a8516 | 11001 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
11002 | name = ((const char *) |
11003 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
11004 | intermediate_name.c_str (), |
11005 | intermediate_name.length ())); | |
34a68019 TT |
11006 | else |
11007 | name = canonical_name; | |
94af9270 KS |
11008 | } |
11009 | } | |
11010 | ||
11011 | return name; | |
11012 | } | |
11013 | ||
0114d602 DJ |
11014 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11015 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11016 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11017 | not have a name. NAME may either be from a previous call to |
11018 | dwarf2_name or NULL. | |
11019 | ||
9c37b5ae | 11020 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11021 | |
11022 | static const char * | |
15d034d0 | 11023 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11024 | { |
94af9270 KS |
11025 | return dwarf2_compute_name (name, die, cu, 0); |
11026 | } | |
0114d602 | 11027 | |
94af9270 KS |
11028 | /* Construct a physname for the given DIE in CU. NAME may either be |
11029 | from a previous call to dwarf2_name or NULL. The result will be | |
11030 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11031 | name. | |
0114d602 | 11032 | |
9c37b5ae | 11033 | The output string will be canonicalized (if C++). */ |
0114d602 | 11034 | |
94af9270 | 11035 | static const char * |
15d034d0 | 11036 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11037 | { |
bb5ed363 | 11038 | struct objfile *objfile = cu->objfile; |
900e11f9 | 11039 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11040 | int need_copy = 1; |
11041 | ||
11042 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11043 | on its own. */ | |
11044 | if (!die_needs_namespace (die, cu)) | |
11045 | return dwarf2_compute_name (name, die, cu, 1); | |
11046 | ||
73b9be8b | 11047 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11048 | |
e98c9e7c TT |
11049 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11050 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11051 | if (cu->language == language_rust && mangled != NULL | |
11052 | && strchr (mangled, '{') != NULL) | |
11053 | mangled = NULL; | |
11054 | ||
900e11f9 JK |
11055 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11056 | has computed. */ | |
791afaa2 | 11057 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11058 | if (mangled != NULL) |
900e11f9 | 11059 | { |
900e11f9 JK |
11060 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return |
11061 | type. It is easier for GDB users to search for such functions as | |
11062 | `name(params)' than `long name(params)'. In such case the minimal | |
11063 | symbol names do not match the full symbol names but for template | |
11064 | functions there is never a need to look up their definition from their | |
11065 | declaration so the only disadvantage remains the minimal symbol | |
11066 | variant `long name(params)' does not have the proper inferior type. | |
11067 | */ | |
11068 | ||
a766d390 DE |
11069 | if (cu->language == language_go) |
11070 | { | |
11071 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
11072 | new_symbol_full assumes we return the mangled name. | |
11073 | This just undoes that lie until things are cleaned up. */ | |
a766d390 DE |
11074 | } |
11075 | else | |
11076 | { | |
791afaa2 TT |
11077 | demangled.reset (gdb_demangle (mangled, |
11078 | (DMGL_PARAMS | DMGL_ANSI | |
11079 | | DMGL_RET_DROP))); | |
a766d390 | 11080 | } |
900e11f9 | 11081 | if (demangled) |
791afaa2 | 11082 | canon = demangled.get (); |
900e11f9 JK |
11083 | else |
11084 | { | |
11085 | canon = mangled; | |
11086 | need_copy = 0; | |
11087 | } | |
11088 | } | |
11089 | ||
11090 | if (canon == NULL || check_physname) | |
11091 | { | |
11092 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11093 | ||
11094 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11095 | { | |
11096 | /* It may not mean a bug in GDB. The compiler could also | |
11097 | compute DW_AT_linkage_name incorrectly. But in such case | |
11098 | GDB would need to be bug-to-bug compatible. */ | |
11099 | ||
11100 | complaint (&symfile_complaints, | |
11101 | _("Computed physname <%s> does not match demangled <%s> " | |
11102 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
9c541725 | 11103 | physname, canon, mangled, to_underlying (die->sect_off), |
4262abfb | 11104 | objfile_name (objfile)); |
900e11f9 JK |
11105 | |
11106 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11107 | is available here - over computed PHYSNAME. It is safer | |
11108 | against both buggy GDB and buggy compilers. */ | |
11109 | ||
11110 | retval = canon; | |
11111 | } | |
11112 | else | |
11113 | { | |
11114 | retval = physname; | |
11115 | need_copy = 0; | |
11116 | } | |
11117 | } | |
11118 | else | |
11119 | retval = canon; | |
11120 | ||
11121 | if (need_copy) | |
224c3ddb SM |
11122 | retval = ((const char *) |
11123 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11124 | retval, strlen (retval))); | |
900e11f9 | 11125 | |
900e11f9 | 11126 | return retval; |
0114d602 DJ |
11127 | } |
11128 | ||
74921315 KS |
11129 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11130 | a new symbol for it. | |
11131 | ||
11132 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11133 | ||
11134 | static int | |
11135 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11136 | { | |
11137 | struct attribute *attr; | |
11138 | ||
11139 | /* If the die does not have a name, this is not a namespace | |
11140 | alias. */ | |
11141 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11142 | if (attr != NULL) | |
11143 | { | |
11144 | int num; | |
11145 | struct die_info *d = die; | |
11146 | struct dwarf2_cu *imported_cu = cu; | |
11147 | ||
11148 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11149 | keep inspecting DIEs until we hit the underlying import. */ | |
11150 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11151 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11152 | { | |
11153 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11154 | if (attr == NULL) | |
11155 | break; | |
11156 | ||
11157 | d = follow_die_ref (d, attr, &imported_cu); | |
11158 | if (d->tag != DW_TAG_imported_declaration) | |
11159 | break; | |
11160 | } | |
11161 | ||
11162 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11163 | { | |
11164 | complaint (&symfile_complaints, | |
11165 | _("DIE at 0x%x has too many recursively imported " | |
9c541725 | 11166 | "declarations"), to_underlying (d->sect_off)); |
74921315 KS |
11167 | return 0; |
11168 | } | |
11169 | ||
11170 | if (attr != NULL) | |
11171 | { | |
11172 | struct type *type; | |
9c541725 | 11173 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11174 | |
9c541725 | 11175 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11176 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11177 | { | |
11178 | /* This declaration is a global namespace alias. Add | |
11179 | a symbol for it whose type is the aliased namespace. */ | |
11180 | new_symbol (die, type, cu); | |
11181 | return 1; | |
11182 | } | |
11183 | } | |
11184 | } | |
11185 | ||
11186 | return 0; | |
11187 | } | |
11188 | ||
22cee43f PMR |
11189 | /* Return the using directives repository (global or local?) to use in the |
11190 | current context for LANGUAGE. | |
11191 | ||
11192 | For Ada, imported declarations can materialize renamings, which *may* be | |
11193 | global. However it is impossible (for now?) in DWARF to distinguish | |
11194 | "external" imported declarations and "static" ones. As all imported | |
11195 | declarations seem to be static in all other languages, make them all CU-wide | |
11196 | global only in Ada. */ | |
11197 | ||
11198 | static struct using_direct ** | |
11199 | using_directives (enum language language) | |
11200 | { | |
11201 | if (language == language_ada && context_stack_depth == 0) | |
11202 | return &global_using_directives; | |
11203 | else | |
11204 | return &local_using_directives; | |
11205 | } | |
11206 | ||
27aa8d6a SW |
11207 | /* Read the import statement specified by the given die and record it. */ |
11208 | ||
11209 | static void | |
11210 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11211 | { | |
bb5ed363 | 11212 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 11213 | struct attribute *import_attr; |
32019081 | 11214 | struct die_info *imported_die, *child_die; |
de4affc9 | 11215 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11216 | const char *imported_name; |
794684b6 | 11217 | const char *imported_name_prefix; |
13387711 SW |
11218 | const char *canonical_name; |
11219 | const char *import_alias; | |
11220 | const char *imported_declaration = NULL; | |
794684b6 | 11221 | const char *import_prefix; |
eb1e02fd | 11222 | std::vector<const char *> excludes; |
13387711 | 11223 | |
27aa8d6a SW |
11224 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11225 | if (import_attr == NULL) | |
11226 | { | |
11227 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11228 | dwarf_tag_name (die->tag)); | |
11229 | return; | |
11230 | } | |
11231 | ||
de4affc9 CC |
11232 | imported_cu = cu; |
11233 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11234 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11235 | if (imported_name == NULL) |
11236 | { | |
11237 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11238 | ||
11239 | The import in the following code: | |
11240 | namespace A | |
11241 | { | |
11242 | typedef int B; | |
11243 | } | |
11244 | ||
11245 | int main () | |
11246 | { | |
11247 | using A::B; | |
11248 | B b; | |
11249 | return b; | |
11250 | } | |
11251 | ||
11252 | ... | |
11253 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11254 | <52> DW_AT_decl_file : 1 | |
11255 | <53> DW_AT_decl_line : 6 | |
11256 | <54> DW_AT_import : <0x75> | |
11257 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11258 | <59> DW_AT_name : B | |
11259 | <5b> DW_AT_decl_file : 1 | |
11260 | <5c> DW_AT_decl_line : 2 | |
11261 | <5d> DW_AT_type : <0x6e> | |
11262 | ... | |
11263 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11264 | <76> DW_AT_byte_size : 4 | |
11265 | <77> DW_AT_encoding : 5 (signed) | |
11266 | ||
11267 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11268 | This case will be ignored until the gcc bug is fixed. */ | |
11269 | return; | |
11270 | } | |
11271 | ||
82856980 SW |
11272 | /* Figure out the local name after import. */ |
11273 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11274 | |
794684b6 SW |
11275 | /* Figure out where the statement is being imported to. */ |
11276 | import_prefix = determine_prefix (die, cu); | |
11277 | ||
11278 | /* Figure out what the scope of the imported die is and prepend it | |
11279 | to the name of the imported die. */ | |
de4affc9 | 11280 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11281 | |
f55ee35c JK |
11282 | if (imported_die->tag != DW_TAG_namespace |
11283 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11284 | { |
13387711 SW |
11285 | imported_declaration = imported_name; |
11286 | canonical_name = imported_name_prefix; | |
794684b6 | 11287 | } |
13387711 | 11288 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11289 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11290 | imported_name_prefix, |
11291 | (cu->language == language_d ? "." : "::"), | |
11292 | imported_name, (char *) NULL); | |
13387711 SW |
11293 | else |
11294 | canonical_name = imported_name; | |
794684b6 | 11295 | |
32019081 JK |
11296 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11297 | for (child_die = die->child; child_die && child_die->tag; | |
11298 | child_die = sibling_die (child_die)) | |
11299 | { | |
11300 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11301 | represented by an imported module entry with an import attribute | |
11302 | referring to the module and owned entries corresponding to those | |
11303 | entities that are renamed as part of being imported. */ | |
11304 | ||
11305 | if (child_die->tag != DW_TAG_imported_declaration) | |
11306 | { | |
11307 | complaint (&symfile_complaints, | |
11308 | _("child DW_TAG_imported_declaration expected " | |
11309 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 11310 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
32019081 JK |
11311 | continue; |
11312 | } | |
11313 | ||
11314 | import_attr = dwarf2_attr (child_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 (child_die->tag)); | |
11319 | continue; | |
11320 | } | |
11321 | ||
11322 | imported_cu = cu; | |
11323 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11324 | &imported_cu); | |
11325 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11326 | if (imported_name == NULL) | |
11327 | { | |
11328 | complaint (&symfile_complaints, | |
11329 | _("child DW_TAG_imported_declaration has unknown " | |
11330 | "imported name - DIE at 0x%x [in module %s]"), | |
9c541725 | 11331 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
32019081 JK |
11332 | continue; |
11333 | } | |
11334 | ||
eb1e02fd | 11335 | excludes.push_back (imported_name); |
32019081 JK |
11336 | |
11337 | process_die (child_die, cu); | |
11338 | } | |
11339 | ||
22cee43f PMR |
11340 | add_using_directive (using_directives (cu->language), |
11341 | import_prefix, | |
11342 | canonical_name, | |
11343 | import_alias, | |
11344 | imported_declaration, | |
11345 | excludes, | |
11346 | 0, | |
11347 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11348 | } |
11349 | ||
5230b05a WT |
11350 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11351 | types, but gives them a size of zero. Starting with version 14, | |
11352 | ICC is compatible with GCC. */ | |
11353 | ||
11354 | static int | |
11355 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11356 | { | |
11357 | if (!cu->checked_producer) | |
11358 | check_producer (cu); | |
11359 | ||
11360 | return cu->producer_is_icc_lt_14; | |
11361 | } | |
11362 | ||
1b80a9fa JK |
11363 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11364 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11365 | this, it was first present in GCC release 4.3.0. */ | |
11366 | ||
11367 | static int | |
11368 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11369 | { | |
11370 | if (!cu->checked_producer) | |
11371 | check_producer (cu); | |
11372 | ||
11373 | return cu->producer_is_gcc_lt_4_3; | |
11374 | } | |
11375 | ||
d721ba37 PA |
11376 | static file_and_directory |
11377 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11378 | { |
d721ba37 PA |
11379 | file_and_directory res; |
11380 | ||
9291a0cd TT |
11381 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11382 | is not a source language identifier. */ | |
d721ba37 PA |
11383 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11384 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11385 | |
d721ba37 PA |
11386 | if (res.comp_dir == NULL |
11387 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11388 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11389 | { |
d721ba37 PA |
11390 | res.comp_dir_storage = ldirname (res.name); |
11391 | if (!res.comp_dir_storage.empty ()) | |
11392 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11393 | } |
d721ba37 | 11394 | if (res.comp_dir != NULL) |
9291a0cd TT |
11395 | { |
11396 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11397 | directory, get rid of it. */ | |
d721ba37 | 11398 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11399 | |
d721ba37 PA |
11400 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11401 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11402 | } |
11403 | ||
d721ba37 PA |
11404 | if (res.name == NULL) |
11405 | res.name = "<unknown>"; | |
11406 | ||
11407 | return res; | |
9291a0cd TT |
11408 | } |
11409 | ||
f4dc4d17 DE |
11410 | /* Handle DW_AT_stmt_list for a compilation unit. |
11411 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11412 | COMP_DIR is the compilation directory. LOWPC is passed to |
11413 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11414 | |
11415 | static void | |
11416 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11417 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11418 | { |
527f3840 | 11419 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11420 | struct attribute *attr; |
527f3840 JK |
11421 | struct line_header line_header_local; |
11422 | hashval_t line_header_local_hash; | |
527f3840 JK |
11423 | void **slot; |
11424 | int decode_mapping; | |
2ab95328 | 11425 | |
f4dc4d17 DE |
11426 | gdb_assert (! cu->per_cu->is_debug_types); |
11427 | ||
2ab95328 | 11428 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11429 | if (attr == NULL) |
11430 | return; | |
11431 | ||
9c541725 | 11432 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11433 | |
11434 | /* The line header hash table is only created if needed (it exists to | |
11435 | prevent redundant reading of the line table for partial_units). | |
11436 | If we're given a partial_unit, we'll need it. If we're given a | |
11437 | compile_unit, then use the line header hash table if it's already | |
11438 | created, but don't create one just yet. */ | |
11439 | ||
11440 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11441 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11442 | { |
527f3840 JK |
11443 | dwarf2_per_objfile->line_header_hash |
11444 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11445 | line_header_eq_voidp, | |
11446 | free_line_header_voidp, | |
11447 | &objfile->objfile_obstack, | |
11448 | hashtab_obstack_allocate, | |
11449 | dummy_obstack_deallocate); | |
11450 | } | |
2ab95328 | 11451 | |
9c541725 | 11452 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11453 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11454 | line_header_local_hash = line_header_hash (&line_header_local); | |
11455 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11456 | { | |
11457 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11458 | &line_header_local, | |
11459 | line_header_local_hash, NO_INSERT); | |
11460 | ||
11461 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11462 | is not present in *SLOT (since if there is something in *SLOT then | |
11463 | it will be for a partial_unit). */ | |
11464 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11465 | { |
527f3840 | 11466 | gdb_assert (*slot != NULL); |
9a3c8263 | 11467 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11468 | return; |
dee91e82 | 11469 | } |
2ab95328 | 11470 | } |
527f3840 JK |
11471 | |
11472 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11473 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11474 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11475 | if (lh == NULL) | |
527f3840 | 11476 | return; |
4c8aa72d PA |
11477 | |
11478 | cu->line_header = lh.release (); | |
11479 | cu->line_header_die_owner = die; | |
527f3840 JK |
11480 | |
11481 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11482 | slot = NULL; | |
11483 | else | |
11484 | { | |
11485 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11486 | &line_header_local, | |
11487 | line_header_local_hash, INSERT); | |
11488 | gdb_assert (slot != NULL); | |
11489 | } | |
11490 | if (slot != NULL && *slot == NULL) | |
11491 | { | |
11492 | /* This newly decoded line number information unit will be owned | |
11493 | by line_header_hash hash table. */ | |
11494 | *slot = cu->line_header; | |
4c8aa72d | 11495 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11496 | } |
11497 | else | |
11498 | { | |
11499 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11500 | may be already used by multiple CUs. Create only temporary decoded | |
11501 | line_header for this CU - it may happen at most once for each line | |
11502 | number information unit. And if we're not using line_header_hash | |
11503 | then this is what we want as well. */ | |
11504 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11505 | } |
11506 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11507 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11508 | decode_mapping); | |
fff8551c | 11509 | |
2ab95328 TT |
11510 | } |
11511 | ||
95554aad | 11512 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11513 | |
c906108c | 11514 | static void |
e7c27a73 | 11515 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11516 | { |
dee91e82 | 11517 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11518 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11519 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11520 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11521 | struct attribute *attr; | |
c906108c | 11522 | struct die_info *child_die; |
e142c38c | 11523 | CORE_ADDR baseaddr; |
6e70227d | 11524 | |
e142c38c | 11525 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11526 | |
fae299cd | 11527 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11528 | |
11529 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11530 | from finish_block. */ | |
2acceee2 | 11531 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11532 | lowpc = highpc; |
3e29f34a | 11533 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11534 | |
d721ba37 | 11535 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11536 | |
95554aad | 11537 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 11538 | |
f4b8a18d KW |
11539 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11540 | standardised yet. As a workaround for the language detection we fall | |
11541 | back to the DW_AT_producer string. */ | |
11542 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11543 | cu->language = language_opencl; | |
11544 | ||
3019eac3 DE |
11545 | /* Similar hack for Go. */ |
11546 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11547 | set_cu_language (DW_LANG_Go, cu); | |
11548 | ||
d721ba37 | 11549 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11550 | |
11551 | /* Decode line number information if present. We do this before | |
11552 | processing child DIEs, so that the line header table is available | |
11553 | for DW_AT_decl_file. */ | |
d721ba37 | 11554 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11555 | |
11556 | /* Process all dies in compilation unit. */ | |
11557 | if (die->child != NULL) | |
11558 | { | |
11559 | child_die = die->child; | |
11560 | while (child_die && child_die->tag) | |
11561 | { | |
11562 | process_die (child_die, cu); | |
11563 | child_die = sibling_die (child_die); | |
11564 | } | |
11565 | } | |
11566 | ||
11567 | /* Decode macro information, if present. Dwarf 2 macro information | |
11568 | refers to information in the line number info statement program | |
11569 | header, so we can only read it if we've read the header | |
11570 | successfully. */ | |
0af92d60 JK |
11571 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11572 | if (attr == NULL) | |
11573 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11574 | if (attr && cu->line_header) |
11575 | { | |
11576 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
11577 | complaint (&symfile_complaints, | |
0af92d60 | 11578 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11579 | |
43f3e411 | 11580 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11581 | } |
11582 | else | |
11583 | { | |
11584 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11585 | if (attr && cu->line_header) | |
11586 | { | |
11587 | unsigned int macro_offset = DW_UNSND (attr); | |
11588 | ||
43f3e411 | 11589 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11590 | } |
11591 | } | |
3019eac3 DE |
11592 | } |
11593 | ||
f4dc4d17 DE |
11594 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11595 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11596 | symtabs with another TU and the symtabs have already been created | |
11597 | then restore those symtabs in the line header. | |
11598 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11599 | |
11600 | static void | |
f4dc4d17 | 11601 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11602 | { |
f4dc4d17 DE |
11603 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11604 | struct type_unit_group *tu_group; | |
11605 | int first_time; | |
3019eac3 | 11606 | struct attribute *attr; |
9c541725 | 11607 | unsigned int i; |
0186c6a7 | 11608 | struct signatured_type *sig_type; |
3019eac3 | 11609 | |
f4dc4d17 | 11610 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11611 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11612 | |
f4dc4d17 | 11613 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11614 | |
f4dc4d17 | 11615 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11616 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11617 | if (sig_type->type_unit_group == NULL) |
11618 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11619 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11620 | |
11621 | /* If we've already processed this stmt_list there's no real need to | |
11622 | do it again, we could fake it and just recreate the part we need | |
11623 | (file name,index -> symtab mapping). If data shows this optimization | |
11624 | is useful we can do it then. */ | |
43f3e411 | 11625 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11626 | |
11627 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11628 | debug info. */ | |
fff8551c | 11629 | line_header_up lh; |
f4dc4d17 | 11630 | if (attr != NULL) |
3019eac3 | 11631 | { |
9c541725 | 11632 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11633 | lh = dwarf_decode_line_header (line_offset, cu); |
11634 | } | |
11635 | if (lh == NULL) | |
11636 | { | |
11637 | if (first_time) | |
11638 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11639 | else | |
11640 | { | |
11641 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 11642 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11643 | } |
f4dc4d17 | 11644 | return; |
3019eac3 DE |
11645 | } |
11646 | ||
4c8aa72d PA |
11647 | cu->line_header = lh.release (); |
11648 | cu->line_header_die_owner = die; | |
3019eac3 | 11649 | |
f4dc4d17 DE |
11650 | if (first_time) |
11651 | { | |
43f3e411 | 11652 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11653 | |
1fd60fc0 DE |
11654 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11655 | still initializing it, and our caller (a few levels up) | |
11656 | process_full_type_unit still needs to know if this is the first | |
11657 | time. */ | |
11658 | ||
4c8aa72d PA |
11659 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11660 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11661 | cu->line_header->file_names.size ()); | |
3019eac3 | 11662 | |
4c8aa72d | 11663 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11664 | { |
4c8aa72d | 11665 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11666 | |
4c8aa72d | 11667 | dwarf2_start_subfile (fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11668 | |
f4dc4d17 DE |
11669 | if (current_subfile->symtab == NULL) |
11670 | { | |
4c8aa72d PA |
11671 | /* NOTE: start_subfile will recognize when it's been |
11672 | passed a file it has already seen. So we can't | |
11673 | assume there's a simple mapping from | |
11674 | cu->line_header->file_names to subfiles, plus | |
11675 | cu->line_header->file_names may contain dups. */ | |
43f3e411 DE |
11676 | current_subfile->symtab |
11677 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
11678 | } |
11679 | ||
8c43009f PA |
11680 | fe.symtab = current_subfile->symtab; |
11681 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
11682 | } |
11683 | } | |
11684 | else | |
3019eac3 | 11685 | { |
0ab9ce85 | 11686 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11687 | |
4c8aa72d | 11688 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11689 | { |
4c8aa72d | 11690 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11691 | |
4c8aa72d | 11692 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11693 | } |
3019eac3 DE |
11694 | } |
11695 | ||
f4dc4d17 DE |
11696 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11697 | so they don't have a "real" (so to speak) symtab anyway. | |
11698 | There is later code that will assign the main symtab to all symbols | |
11699 | that don't have one. We need to handle the case of a symbol with a | |
11700 | missing symtab (DW_AT_decl_file) anyway. */ | |
11701 | } | |
3019eac3 | 11702 | |
f4dc4d17 DE |
11703 | /* Process DW_TAG_type_unit. |
11704 | For TUs we want to skip the first top level sibling if it's not the | |
11705 | actual type being defined by this TU. In this case the first top | |
11706 | level sibling is there to provide context only. */ | |
3019eac3 | 11707 | |
f4dc4d17 DE |
11708 | static void |
11709 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11710 | { | |
11711 | struct die_info *child_die; | |
3019eac3 | 11712 | |
f4dc4d17 DE |
11713 | prepare_one_comp_unit (cu, die, language_minimal); |
11714 | ||
11715 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11716 | We do this before processing child DIEs, so that the line header table | |
11717 | is available for DW_AT_decl_file. */ | |
11718 | setup_type_unit_groups (die, cu); | |
11719 | ||
11720 | if (die->child != NULL) | |
11721 | { | |
11722 | child_die = die->child; | |
11723 | while (child_die && child_die->tag) | |
11724 | { | |
11725 | process_die (child_die, cu); | |
11726 | child_die = sibling_die (child_die); | |
11727 | } | |
11728 | } | |
3019eac3 DE |
11729 | } |
11730 | \f | |
80626a55 DE |
11731 | /* DWO/DWP files. |
11732 | ||
11733 | http://gcc.gnu.org/wiki/DebugFission | |
11734 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11735 | ||
11736 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11737 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11738 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11739 | |
11740 | static hashval_t | |
11741 | hash_dwo_file (const void *item) | |
11742 | { | |
9a3c8263 | 11743 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11744 | hashval_t hash; |
3019eac3 | 11745 | |
a2ce51a0 DE |
11746 | hash = htab_hash_string (dwo_file->dwo_name); |
11747 | if (dwo_file->comp_dir != NULL) | |
11748 | hash += htab_hash_string (dwo_file->comp_dir); | |
11749 | return hash; | |
3019eac3 DE |
11750 | } |
11751 | ||
11752 | static int | |
11753 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11754 | { | |
9a3c8263 SM |
11755 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11756 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11757 | |
a2ce51a0 DE |
11758 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11759 | return 0; | |
11760 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11761 | return lhs->comp_dir == rhs->comp_dir; | |
11762 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11763 | } |
11764 | ||
11765 | /* Allocate a hash table for DWO files. */ | |
11766 | ||
11767 | static htab_t | |
11768 | allocate_dwo_file_hash_table (void) | |
11769 | { | |
11770 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11771 | ||
11772 | return htab_create_alloc_ex (41, | |
11773 | hash_dwo_file, | |
11774 | eq_dwo_file, | |
11775 | NULL, | |
11776 | &objfile->objfile_obstack, | |
11777 | hashtab_obstack_allocate, | |
11778 | dummy_obstack_deallocate); | |
11779 | } | |
11780 | ||
80626a55 DE |
11781 | /* Lookup DWO file DWO_NAME. */ |
11782 | ||
11783 | static void ** | |
0ac5b59e | 11784 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
11785 | { |
11786 | struct dwo_file find_entry; | |
11787 | void **slot; | |
11788 | ||
11789 | if (dwarf2_per_objfile->dwo_files == NULL) | |
11790 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
11791 | ||
11792 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11793 | find_entry.dwo_name = dwo_name; |
11794 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11795 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11796 | ||
11797 | return slot; | |
11798 | } | |
11799 | ||
3019eac3 DE |
11800 | static hashval_t |
11801 | hash_dwo_unit (const void *item) | |
11802 | { | |
9a3c8263 | 11803 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11804 | |
11805 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11806 | return dwo_unit->signature; | |
11807 | } | |
11808 | ||
11809 | static int | |
11810 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11811 | { | |
9a3c8263 SM |
11812 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11813 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11814 | |
11815 | /* The signature is assumed to be unique within the DWO file. | |
11816 | So while object file CU dwo_id's always have the value zero, | |
11817 | that's OK, assuming each object file DWO file has only one CU, | |
11818 | and that's the rule for now. */ | |
11819 | return lhs->signature == rhs->signature; | |
11820 | } | |
11821 | ||
11822 | /* Allocate a hash table for DWO CUs,TUs. | |
11823 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11824 | ||
11825 | static htab_t | |
11826 | allocate_dwo_unit_table (struct objfile *objfile) | |
11827 | { | |
11828 | /* Start out with a pretty small number. | |
11829 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11830 | return htab_create_alloc_ex (3, | |
11831 | hash_dwo_unit, | |
11832 | eq_dwo_unit, | |
11833 | NULL, | |
11834 | &objfile->objfile_obstack, | |
11835 | hashtab_obstack_allocate, | |
11836 | dummy_obstack_deallocate); | |
11837 | } | |
11838 | ||
80626a55 | 11839 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11840 | |
19c3d4c9 | 11841 | struct create_dwo_cu_data |
3019eac3 DE |
11842 | { |
11843 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11844 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11845 | }; |
11846 | ||
19c3d4c9 | 11847 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11848 | |
11849 | static void | |
19c3d4c9 DE |
11850 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11851 | const gdb_byte *info_ptr, | |
11852 | struct die_info *comp_unit_die, | |
11853 | int has_children, | |
11854 | void *datap) | |
3019eac3 DE |
11855 | { |
11856 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11857 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11858 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11859 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11860 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11861 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11862 | struct attribute *attr; |
3019eac3 DE |
11863 | |
11864 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11865 | if (attr == NULL) | |
11866 | { | |
19c3d4c9 DE |
11867 | complaint (&symfile_complaints, |
11868 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
11869 | " its dwo_id [in module %s]"), | |
9c541725 | 11870 | to_underlying (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11871 | return; |
11872 | } | |
11873 | ||
3019eac3 DE |
11874 | dwo_unit->dwo_file = dwo_file; |
11875 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11876 | dwo_unit->section = section; |
9c541725 | 11877 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11878 | dwo_unit->length = cu->per_cu->length; |
11879 | ||
b4f54984 | 11880 | if (dwarf_read_debug) |
4031ecc5 | 11881 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9c541725 PA |
11882 | to_underlying (sect_off), |
11883 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11884 | } |
11885 | ||
33c5cd75 | 11886 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11887 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11888 | |
33c5cd75 DB |
11889 | static void |
11890 | create_cus_hash_table (struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
11891 | htab_t &cus_htab) | |
3019eac3 DE |
11892 | { |
11893 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11894 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11895 | |
33c5cd75 DB |
11896 | dwarf2_read_section (objfile, §ion); |
11897 | info_ptr = section.buffer; | |
3019eac3 DE |
11898 | |
11899 | if (info_ptr == NULL) | |
33c5cd75 | 11900 | return; |
3019eac3 | 11901 | |
b4f54984 | 11902 | if (dwarf_read_debug) |
19c3d4c9 DE |
11903 | { |
11904 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11905 | get_section_name (§ion), |
11906 | get_section_file_name (§ion)); | |
19c3d4c9 | 11907 | } |
3019eac3 | 11908 | |
33c5cd75 | 11909 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11910 | while (info_ptr < end_ptr) |
11911 | { | |
11912 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11913 | struct create_dwo_cu_data create_dwo_cu_data; |
11914 | struct dwo_unit *dwo_unit; | |
11915 | void **slot; | |
11916 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11917 | |
19c3d4c9 DE |
11918 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11919 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
11920 | memset (&per_cu, 0, sizeof (per_cu)); |
11921 | per_cu.objfile = objfile; | |
11922 | per_cu.is_debug_types = 0; | |
33c5cd75 DB |
11923 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11924 | per_cu.section = §ion; | |
c5ed0576 | 11925 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11926 | |
11927 | init_cutu_and_read_dies_no_follow ( | |
11928 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11929 | info_ptr += per_cu.length; | |
11930 | ||
11931 | // If the unit could not be parsed, skip it. | |
11932 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11933 | continue; | |
3019eac3 | 11934 | |
33c5cd75 DB |
11935 | if (cus_htab == NULL) |
11936 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11937 | |
33c5cd75 DB |
11938 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11939 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11940 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11941 | gdb_assert (slot != NULL); | |
11942 | if (*slot != NULL) | |
19c3d4c9 | 11943 | { |
33c5cd75 DB |
11944 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11945 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11946 | |
33c5cd75 DB |
11947 | complaint (&symfile_complaints, |
11948 | _("debug cu entry at offset 0x%x is duplicate to" | |
11949 | " the entry at offset 0x%x, signature %s"), | |
11950 | to_underlying (sect_off), to_underlying (dup_sect_off), | |
11951 | hex_string (dwo_unit->signature)); | |
19c3d4c9 | 11952 | } |
33c5cd75 | 11953 | *slot = (void *)dwo_unit; |
3019eac3 | 11954 | } |
3019eac3 DE |
11955 | } |
11956 | ||
80626a55 DE |
11957 | /* DWP file .debug_{cu,tu}_index section format: |
11958 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11959 | ||
d2415c6c DE |
11960 | DWP Version 1: |
11961 | ||
80626a55 DE |
11962 | Both index sections have the same format, and serve to map a 64-bit |
11963 | signature to a set of section numbers. Each section begins with a header, | |
11964 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11965 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11966 | aligned at 8-byte boundaries in the file. | |
11967 | ||
d2415c6c DE |
11968 | The index section header consists of: |
11969 | ||
11970 | V, 32 bit version number | |
11971 | -, 32 bits unused | |
11972 | N, 32 bit number of compilation units or type units in the index | |
11973 | M, 32 bit number of slots in the hash table | |
80626a55 | 11974 | |
d2415c6c | 11975 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11976 | |
d2415c6c DE |
11977 | The hash table begins at offset 16 in the section, and consists of an array |
11978 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11979 | order of the application binary). Unused slots in the hash table are 0. | |
11980 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11981 | |
d2415c6c DE |
11982 | The parallel table begins immediately after the hash table |
11983 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11984 | array of 32-bit indexes (using the byte order of the application binary), | |
11985 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11986 | table contains a 32-bit index into the pool of section numbers. For unused | |
11987 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11988 | |
73869dc2 DE |
11989 | The pool of section numbers begins immediately following the hash table |
11990 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11991 | section numbers consists of an array of 32-bit words (using the byte order | |
11992 | of the application binary). Each item in the array is indexed starting | |
11993 | from 0. The hash table entry provides the index of the first section | |
11994 | number in the set. Additional section numbers in the set follow, and the | |
11995 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11996 | ||
11997 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11998 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11999 | be the second entry. Other members of the set may follow in any order. | |
12000 | ||
12001 | --- | |
12002 | ||
12003 | DWP Version 2: | |
12004 | ||
12005 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12006 | and the entries in the index tables are now offsets into these sections. | |
12007 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12008 | section. | |
12009 | ||
12010 | Index Section Contents: | |
12011 | Header | |
12012 | Hash Table of Signatures dwp_hash_table.hash_table | |
12013 | Parallel Table of Indices dwp_hash_table.unit_table | |
12014 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12015 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12016 | ||
12017 | The index section header consists of: | |
12018 | ||
12019 | V, 32 bit version number | |
12020 | L, 32 bit number of columns in the table of section offsets | |
12021 | N, 32 bit number of compilation units or type units in the index | |
12022 | M, 32 bit number of slots in the hash table | |
12023 | ||
12024 | Numbers are recorded using the byte order of the application binary. | |
12025 | ||
12026 | The hash table has the same format as version 1. | |
12027 | The parallel table of indices has the same format as version 1, | |
12028 | except that the entries are origin-1 indices into the table of sections | |
12029 | offsets and the table of section sizes. | |
12030 | ||
12031 | The table of offsets begins immediately following the parallel table | |
12032 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12033 | a two-dimensional array of 32-bit words (using the byte order of the | |
12034 | application binary), with L columns and N+1 rows, in row-major order. | |
12035 | Each row in the array is indexed starting from 0. The first row provides | |
12036 | a key to the remaining rows: each column in this row provides an identifier | |
12037 | for a debug section, and the offsets in the same column of subsequent rows | |
12038 | refer to that section. The section identifiers are: | |
12039 | ||
12040 | DW_SECT_INFO 1 .debug_info.dwo | |
12041 | DW_SECT_TYPES 2 .debug_types.dwo | |
12042 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12043 | DW_SECT_LINE 4 .debug_line.dwo | |
12044 | DW_SECT_LOC 5 .debug_loc.dwo | |
12045 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12046 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12047 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12048 | ||
12049 | The offsets provided by the CU and TU index sections are the base offsets | |
12050 | for the contributions made by each CU or TU to the corresponding section | |
12051 | in the package file. Each CU and TU header contains an abbrev_offset | |
12052 | field, used to find the abbreviations table for that CU or TU within the | |
12053 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12054 | be interpreted as relative to the base offset given in the index section. | |
12055 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12056 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12057 | and offsets into other debug sections obtained from DWARF attributes should | |
12058 | also be interpreted as relative to the corresponding base offset. | |
12059 | ||
12060 | The table of sizes begins immediately following the table of offsets. | |
12061 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12062 | with L columns and N rows, in row-major order. Each row in the array is | |
12063 | indexed starting from 1 (row 0 is shared by the two tables). | |
12064 | ||
12065 | --- | |
12066 | ||
12067 | Hash table lookup is handled the same in version 1 and 2: | |
12068 | ||
12069 | We assume that N and M will not exceed 2^32 - 1. | |
12070 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12071 | ||
d2415c6c DE |
12072 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12073 | in the hash table is located as follows: | |
80626a55 | 12074 | |
d2415c6c DE |
12075 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12076 | the low-order k bits all set to 1. | |
80626a55 | 12077 | |
d2415c6c | 12078 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12079 | |
d2415c6c DE |
12080 | 3) If the hash table entry at index H matches the signature, use that |
12081 | entry. If the hash table entry at index H is unused (all zeroes), | |
12082 | terminate the search: the signature is not present in the table. | |
80626a55 | 12083 | |
d2415c6c | 12084 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12085 | |
d2415c6c | 12086 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12087 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12088 | |
12089 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12090 | .debug_{info,types}.dwo in DWP_FILE. | |
12091 | Returns NULL if there isn't one. | |
12092 | Note: This function processes DWP files only, not DWO files. */ | |
12093 | ||
12094 | static struct dwp_hash_table * | |
12095 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
12096 | { | |
12097 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12098 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 12099 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12100 | struct dwarf2_section_info *index; |
73869dc2 | 12101 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12102 | struct dwp_hash_table *htab; |
12103 | ||
12104 | if (is_debug_types) | |
12105 | index = &dwp_file->sections.tu_index; | |
12106 | else | |
12107 | index = &dwp_file->sections.cu_index; | |
12108 | ||
12109 | if (dwarf2_section_empty_p (index)) | |
12110 | return NULL; | |
12111 | dwarf2_read_section (objfile, index); | |
12112 | ||
12113 | index_ptr = index->buffer; | |
12114 | index_end = index_ptr + index->size; | |
12115 | ||
12116 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12117 | index_ptr += 4; |
12118 | if (version == 2) | |
12119 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12120 | else | |
12121 | nr_columns = 0; | |
12122 | index_ptr += 4; | |
80626a55 DE |
12123 | nr_units = read_4_bytes (dbfd, index_ptr); |
12124 | index_ptr += 4; | |
12125 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12126 | index_ptr += 4; | |
12127 | ||
73869dc2 | 12128 | if (version != 1 && version != 2) |
80626a55 | 12129 | { |
21aa081e | 12130 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12131 | " [in module %s]"), |
21aa081e | 12132 | pulongest (version), dwp_file->name); |
80626a55 DE |
12133 | } |
12134 | if (nr_slots != (nr_slots & -nr_slots)) | |
12135 | { | |
21aa081e | 12136 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12137 | " is not power of 2 [in module %s]"), |
21aa081e | 12138 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12139 | } |
12140 | ||
12141 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12142 | htab->version = version; |
12143 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12144 | htab->nr_units = nr_units; |
12145 | htab->nr_slots = nr_slots; | |
12146 | htab->hash_table = index_ptr; | |
12147 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12148 | |
12149 | /* Exit early if the table is empty. */ | |
12150 | if (nr_slots == 0 || nr_units == 0 | |
12151 | || (version == 2 && nr_columns == 0)) | |
12152 | { | |
12153 | /* All must be zero. */ | |
12154 | if (nr_slots != 0 || nr_units != 0 | |
12155 | || (version == 2 && nr_columns != 0)) | |
12156 | { | |
12157 | complaint (&symfile_complaints, | |
12158 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
12159 | " all zero [in modules %s]"), | |
12160 | dwp_file->name); | |
12161 | } | |
12162 | return htab; | |
12163 | } | |
12164 | ||
12165 | if (version == 1) | |
12166 | { | |
12167 | htab->section_pool.v1.indices = | |
12168 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12169 | /* It's harder to decide whether the section is too small in v1. | |
12170 | V1 is deprecated anyway so we punt. */ | |
12171 | } | |
12172 | else | |
12173 | { | |
12174 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12175 | int *ids = htab->section_pool.v2.section_ids; | |
12176 | /* Reverse map for error checking. */ | |
12177 | int ids_seen[DW_SECT_MAX + 1]; | |
12178 | int i; | |
12179 | ||
12180 | if (nr_columns < 2) | |
12181 | { | |
12182 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12183 | " in section table [in module %s]"), | |
12184 | dwp_file->name); | |
12185 | } | |
12186 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12187 | { | |
12188 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12189 | " in section table [in module %s]"), | |
12190 | dwp_file->name); | |
12191 | } | |
12192 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12193 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12194 | for (i = 0; i < nr_columns; ++i) | |
12195 | { | |
12196 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12197 | ||
12198 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12199 | { | |
12200 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12201 | " in section table [in module %s]"), | |
12202 | id, dwp_file->name); | |
12203 | } | |
12204 | if (ids_seen[id] != -1) | |
12205 | { | |
12206 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12207 | " id %d in section table [in module %s]"), | |
12208 | id, dwp_file->name); | |
12209 | } | |
12210 | ids_seen[id] = i; | |
12211 | ids[i] = id; | |
12212 | } | |
12213 | /* Must have exactly one info or types section. */ | |
12214 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12215 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12216 | != 1) | |
12217 | { | |
12218 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12219 | " DWO info/types section [in module %s]"), | |
12220 | dwp_file->name); | |
12221 | } | |
12222 | /* Must have an abbrev section. */ | |
12223 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12224 | { | |
12225 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12226 | " section [in module %s]"), | |
12227 | dwp_file->name); | |
12228 | } | |
12229 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12230 | htab->section_pool.v2.sizes = | |
12231 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12232 | * nr_units * nr_columns); | |
12233 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12234 | * nr_units * nr_columns)) | |
12235 | > index_end) | |
12236 | { | |
12237 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12238 | " [in module %s]"), | |
12239 | dwp_file->name); | |
12240 | } | |
12241 | } | |
80626a55 DE |
12242 | |
12243 | return htab; | |
12244 | } | |
12245 | ||
12246 | /* Update SECTIONS with the data from SECTP. | |
12247 | ||
12248 | This function is like the other "locate" section routines that are | |
12249 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12250 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12251 | |
12252 | The result is non-zero for success, or zero if an error was found. */ | |
12253 | ||
12254 | static int | |
73869dc2 DE |
12255 | locate_v1_virtual_dwo_sections (asection *sectp, |
12256 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12257 | { |
12258 | const struct dwop_section_names *names = &dwop_section_names; | |
12259 | ||
12260 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12261 | { | |
12262 | /* There can be only one. */ | |
049412e3 | 12263 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12264 | return 0; |
049412e3 | 12265 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12266 | sections->abbrev.size = bfd_get_section_size (sectp); |
12267 | } | |
12268 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12269 | || section_is_p (sectp->name, &names->types_dwo)) | |
12270 | { | |
12271 | /* There can be only one. */ | |
049412e3 | 12272 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12273 | return 0; |
049412e3 | 12274 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12275 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12276 | } | |
12277 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12278 | { | |
12279 | /* There can be only one. */ | |
049412e3 | 12280 | if (sections->line.s.section != NULL) |
80626a55 | 12281 | return 0; |
049412e3 | 12282 | sections->line.s.section = sectp; |
80626a55 DE |
12283 | sections->line.size = bfd_get_section_size (sectp); |
12284 | } | |
12285 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12286 | { | |
12287 | /* There can be only one. */ | |
049412e3 | 12288 | if (sections->loc.s.section != NULL) |
80626a55 | 12289 | return 0; |
049412e3 | 12290 | sections->loc.s.section = sectp; |
80626a55 DE |
12291 | sections->loc.size = bfd_get_section_size (sectp); |
12292 | } | |
12293 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12294 | { | |
12295 | /* There can be only one. */ | |
049412e3 | 12296 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12297 | return 0; |
049412e3 | 12298 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12299 | sections->macinfo.size = bfd_get_section_size (sectp); |
12300 | } | |
12301 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12302 | { | |
12303 | /* There can be only one. */ | |
049412e3 | 12304 | if (sections->macro.s.section != NULL) |
80626a55 | 12305 | return 0; |
049412e3 | 12306 | sections->macro.s.section = sectp; |
80626a55 DE |
12307 | sections->macro.size = bfd_get_section_size (sectp); |
12308 | } | |
12309 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12310 | { | |
12311 | /* There can be only one. */ | |
049412e3 | 12312 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12313 | return 0; |
049412e3 | 12314 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12315 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12316 | } | |
12317 | else | |
12318 | { | |
12319 | /* No other kind of section is valid. */ | |
12320 | return 0; | |
12321 | } | |
12322 | ||
12323 | return 1; | |
12324 | } | |
12325 | ||
73869dc2 DE |
12326 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12327 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12328 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12329 | This is for DWP version 1 files. */ | |
80626a55 DE |
12330 | |
12331 | static struct dwo_unit * | |
73869dc2 DE |
12332 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
12333 | uint32_t unit_index, | |
12334 | const char *comp_dir, | |
12335 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12336 | { |
12337 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12338 | const struct dwp_hash_table *dwp_htab = |
12339 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
12340 | bfd *dbfd = dwp_file->dbfd; |
12341 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12342 | struct dwo_file *dwo_file; | |
12343 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12344 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12345 | void **dwo_file_slot; |
80626a55 DE |
12346 | int i; |
12347 | ||
73869dc2 DE |
12348 | gdb_assert (dwp_file->version == 1); |
12349 | ||
b4f54984 | 12350 | if (dwarf_read_debug) |
80626a55 | 12351 | { |
73869dc2 | 12352 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12353 | kind, |
73869dc2 | 12354 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12355 | dwp_file->name); |
12356 | } | |
12357 | ||
19ac8c2e | 12358 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12359 | Put a limit on the number of sections we look for so that bad data |
12360 | doesn't cause us to loop forever. */ | |
12361 | ||
73869dc2 | 12362 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12363 | (1 /* .debug_info or .debug_types */ \ |
12364 | + 1 /* .debug_abbrev */ \ | |
12365 | + 1 /* .debug_line */ \ | |
12366 | + 1 /* .debug_loc */ \ | |
12367 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12368 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12369 | + 1 /* trailing zero */) |
12370 | ||
12371 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12372 | |
73869dc2 | 12373 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12374 | { |
12375 | asection *sectp; | |
12376 | uint32_t section_nr = | |
12377 | read_4_bytes (dbfd, | |
73869dc2 DE |
12378 | dwp_htab->section_pool.v1.indices |
12379 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12380 | |
12381 | if (section_nr == 0) | |
12382 | break; | |
12383 | if (section_nr >= dwp_file->num_sections) | |
12384 | { | |
12385 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12386 | " [in module %s]"), | |
12387 | dwp_file->name); | |
12388 | } | |
12389 | ||
12390 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12391 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12392 | { |
12393 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12394 | " [in module %s]"), | |
12395 | dwp_file->name); | |
12396 | } | |
12397 | } | |
12398 | ||
12399 | if (i < 2 | |
a32a8923 DE |
12400 | || dwarf2_section_empty_p (§ions.info_or_types) |
12401 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12402 | { |
12403 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12404 | " [in module %s]"), | |
12405 | dwp_file->name); | |
12406 | } | |
73869dc2 | 12407 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12408 | { |
12409 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12410 | " [in module %s]"), | |
12411 | dwp_file->name); | |
12412 | } | |
12413 | ||
12414 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12415 | have dwo_unit "live" in that. At least for now. | |
12416 | ||
12417 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12418 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12419 | file, we can combine them back into a virtual DWO file to save space |
12420 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12421 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12422 | ||
791afaa2 TT |
12423 | std::string virtual_dwo_name = |
12424 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12425 | get_section_id (§ions.abbrev), | |
12426 | get_section_id (§ions.line), | |
12427 | get_section_id (§ions.loc), | |
12428 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12429 | /* Can we use an existing virtual DWO file? */ |
791afaa2 | 12430 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name.c_str (), comp_dir); |
80626a55 DE |
12431 | /* Create one if necessary. */ |
12432 | if (*dwo_file_slot == NULL) | |
12433 | { | |
b4f54984 | 12434 | if (dwarf_read_debug) |
80626a55 DE |
12435 | { |
12436 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12437 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12438 | } |
12439 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12440 | dwo_file->dwo_name |
12441 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12442 | virtual_dwo_name.c_str (), |
12443 | virtual_dwo_name.size ()); | |
0ac5b59e | 12444 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12445 | dwo_file->sections.abbrev = sections.abbrev; |
12446 | dwo_file->sections.line = sections.line; | |
12447 | dwo_file->sections.loc = sections.loc; | |
12448 | dwo_file->sections.macinfo = sections.macinfo; | |
12449 | dwo_file->sections.macro = sections.macro; | |
12450 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12451 | /* The "str" section is global to the entire DWP file. */ | |
12452 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12453 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12454 | there's no need to record it in dwo_file. |
12455 | Also, we can't simply record type sections in dwo_file because | |
12456 | we record a pointer into the vector in dwo_unit. As we collect more | |
12457 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12458 | for it, invalidating all copies of pointers into the previous |
12459 | contents. */ | |
80626a55 DE |
12460 | *dwo_file_slot = dwo_file; |
12461 | } | |
12462 | else | |
12463 | { | |
b4f54984 | 12464 | if (dwarf_read_debug) |
80626a55 DE |
12465 | { |
12466 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12467 | virtual_dwo_name.c_str ()); |
80626a55 | 12468 | } |
9a3c8263 | 12469 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12470 | } |
80626a55 DE |
12471 | |
12472 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12473 | dwo_unit->dwo_file = dwo_file; | |
12474 | dwo_unit->signature = signature; | |
8d749320 SM |
12475 | dwo_unit->section = |
12476 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12477 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12478 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12479 | |
12480 | return dwo_unit; | |
12481 | } | |
12482 | ||
73869dc2 DE |
12483 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12484 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12485 | piece within that section used by a TU/CU, return a virtual section | |
12486 | of just that piece. */ | |
12487 | ||
12488 | static struct dwarf2_section_info | |
12489 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
12490 | bfd_size_type offset, bfd_size_type size) | |
12491 | { | |
12492 | struct dwarf2_section_info result; | |
12493 | asection *sectp; | |
12494 | ||
12495 | gdb_assert (section != NULL); | |
12496 | gdb_assert (!section->is_virtual); | |
12497 | ||
12498 | memset (&result, 0, sizeof (result)); | |
12499 | result.s.containing_section = section; | |
12500 | result.is_virtual = 1; | |
12501 | ||
12502 | if (size == 0) | |
12503 | return result; | |
12504 | ||
12505 | sectp = get_section_bfd_section (section); | |
12506 | ||
12507 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12508 | bounds of the real section. This is a pretty-rare event, so just | |
12509 | flag an error (easier) instead of a warning and trying to cope. */ | |
12510 | if (sectp == NULL | |
12511 | || offset + size > bfd_get_section_size (sectp)) | |
12512 | { | |
73869dc2 DE |
12513 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12514 | " in section %s [in module %s]"), | |
12515 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12516 | objfile_name (dwarf2_per_objfile->objfile)); | |
12517 | } | |
12518 | ||
12519 | result.virtual_offset = offset; | |
12520 | result.size = size; | |
12521 | return result; | |
12522 | } | |
12523 | ||
12524 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12525 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12526 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12527 | This is for DWP version 2 files. */ | |
12528 | ||
12529 | static struct dwo_unit * | |
12530 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
12531 | uint32_t unit_index, | |
12532 | const char *comp_dir, | |
12533 | ULONGEST signature, int is_debug_types) | |
12534 | { | |
12535 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12536 | const struct dwp_hash_table *dwp_htab = | |
12537 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12538 | bfd *dbfd = dwp_file->dbfd; | |
12539 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12540 | struct dwo_file *dwo_file; | |
12541 | struct dwo_unit *dwo_unit; | |
12542 | struct virtual_v2_dwo_sections sections; | |
12543 | void **dwo_file_slot; | |
73869dc2 DE |
12544 | int i; |
12545 | ||
12546 | gdb_assert (dwp_file->version == 2); | |
12547 | ||
b4f54984 | 12548 | if (dwarf_read_debug) |
73869dc2 DE |
12549 | { |
12550 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12551 | kind, | |
12552 | pulongest (unit_index), hex_string (signature), | |
12553 | dwp_file->name); | |
12554 | } | |
12555 | ||
12556 | /* Fetch the section offsets of this DWO unit. */ | |
12557 | ||
12558 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12559 | |
12560 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12561 | { | |
12562 | uint32_t offset = read_4_bytes (dbfd, | |
12563 | dwp_htab->section_pool.v2.offsets | |
12564 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12565 | + i) | |
12566 | * sizeof (uint32_t))); | |
12567 | uint32_t size = read_4_bytes (dbfd, | |
12568 | dwp_htab->section_pool.v2.sizes | |
12569 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12570 | + i) | |
12571 | * sizeof (uint32_t))); | |
12572 | ||
12573 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12574 | { | |
12575 | case DW_SECT_INFO: | |
12576 | case DW_SECT_TYPES: | |
12577 | sections.info_or_types_offset = offset; | |
12578 | sections.info_or_types_size = size; | |
12579 | break; | |
12580 | case DW_SECT_ABBREV: | |
12581 | sections.abbrev_offset = offset; | |
12582 | sections.abbrev_size = size; | |
12583 | break; | |
12584 | case DW_SECT_LINE: | |
12585 | sections.line_offset = offset; | |
12586 | sections.line_size = size; | |
12587 | break; | |
12588 | case DW_SECT_LOC: | |
12589 | sections.loc_offset = offset; | |
12590 | sections.loc_size = size; | |
12591 | break; | |
12592 | case DW_SECT_STR_OFFSETS: | |
12593 | sections.str_offsets_offset = offset; | |
12594 | sections.str_offsets_size = size; | |
12595 | break; | |
12596 | case DW_SECT_MACINFO: | |
12597 | sections.macinfo_offset = offset; | |
12598 | sections.macinfo_size = size; | |
12599 | break; | |
12600 | case DW_SECT_MACRO: | |
12601 | sections.macro_offset = offset; | |
12602 | sections.macro_size = size; | |
12603 | break; | |
12604 | } | |
12605 | } | |
12606 | ||
12607 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12608 | have dwo_unit "live" in that. At least for now. | |
12609 | ||
12610 | The DWP file can be made up of a random collection of CUs and TUs. | |
12611 | However, for each CU + set of TUs that came from the same original DWO | |
12612 | file, we can combine them back into a virtual DWO file to save space | |
12613 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12614 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12615 | ||
791afaa2 TT |
12616 | std::string virtual_dwo_name = |
12617 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12618 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12619 | (long) (sections.line_size ? sections.line_offset : 0), | |
12620 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12621 | (long) (sections.str_offsets_size | |
12622 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12623 | /* Can we use an existing virtual DWO file? */ |
791afaa2 | 12624 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name.c_str (), comp_dir); |
73869dc2 DE |
12625 | /* Create one if necessary. */ |
12626 | if (*dwo_file_slot == NULL) | |
12627 | { | |
b4f54984 | 12628 | if (dwarf_read_debug) |
73869dc2 DE |
12629 | { |
12630 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12631 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12632 | } |
12633 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12634 | dwo_file->dwo_name |
12635 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12636 | virtual_dwo_name.c_str (), |
12637 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12638 | dwo_file->comp_dir = comp_dir; |
12639 | dwo_file->sections.abbrev = | |
12640 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
12641 | sections.abbrev_offset, sections.abbrev_size); | |
12642 | dwo_file->sections.line = | |
12643 | create_dwp_v2_section (&dwp_file->sections.line, | |
12644 | sections.line_offset, sections.line_size); | |
12645 | dwo_file->sections.loc = | |
12646 | create_dwp_v2_section (&dwp_file->sections.loc, | |
12647 | sections.loc_offset, sections.loc_size); | |
12648 | dwo_file->sections.macinfo = | |
12649 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
12650 | sections.macinfo_offset, sections.macinfo_size); | |
12651 | dwo_file->sections.macro = | |
12652 | create_dwp_v2_section (&dwp_file->sections.macro, | |
12653 | sections.macro_offset, sections.macro_size); | |
12654 | dwo_file->sections.str_offsets = | |
12655 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
12656 | sections.str_offsets_offset, | |
12657 | sections.str_offsets_size); | |
12658 | /* The "str" section is global to the entire DWP file. */ | |
12659 | dwo_file->sections.str = dwp_file->sections.str; | |
12660 | /* The info or types section is assigned below to dwo_unit, | |
12661 | there's no need to record it in dwo_file. | |
12662 | Also, we can't simply record type sections in dwo_file because | |
12663 | we record a pointer into the vector in dwo_unit. As we collect more | |
12664 | types we'll grow the vector and eventually have to reallocate space | |
12665 | for it, invalidating all copies of pointers into the previous | |
12666 | contents. */ | |
12667 | *dwo_file_slot = dwo_file; | |
12668 | } | |
12669 | else | |
12670 | { | |
b4f54984 | 12671 | if (dwarf_read_debug) |
73869dc2 DE |
12672 | { |
12673 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12674 | virtual_dwo_name.c_str ()); |
73869dc2 | 12675 | } |
9a3c8263 | 12676 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12677 | } |
73869dc2 DE |
12678 | |
12679 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12680 | dwo_unit->dwo_file = dwo_file; | |
12681 | dwo_unit->signature = signature; | |
8d749320 SM |
12682 | dwo_unit->section = |
12683 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
73869dc2 DE |
12684 | *dwo_unit->section = create_dwp_v2_section (is_debug_types |
12685 | ? &dwp_file->sections.types | |
12686 | : &dwp_file->sections.info, | |
12687 | sections.info_or_types_offset, | |
12688 | sections.info_or_types_size); | |
12689 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12690 | ||
12691 | return dwo_unit; | |
12692 | } | |
12693 | ||
57d63ce2 DE |
12694 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12695 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12696 | |
12697 | static struct dwo_unit * | |
57d63ce2 DE |
12698 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
12699 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12700 | { |
57d63ce2 DE |
12701 | const struct dwp_hash_table *dwp_htab = |
12702 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 12703 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 12704 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12705 | uint32_t hash = signature & mask; |
12706 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12707 | unsigned int i; | |
12708 | void **slot; | |
870f88f7 | 12709 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12710 | |
12711 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12712 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12713 | slot = htab_find_slot (is_debug_types |
12714 | ? dwp_file->loaded_tus | |
12715 | : dwp_file->loaded_cus, | |
12716 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12717 | |
12718 | if (*slot != NULL) | |
9a3c8263 | 12719 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12720 | |
12721 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12722 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12723 | { |
12724 | ULONGEST signature_in_table; | |
12725 | ||
12726 | signature_in_table = | |
57d63ce2 | 12727 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12728 | if (signature_in_table == signature) |
12729 | { | |
57d63ce2 DE |
12730 | uint32_t unit_index = |
12731 | read_4_bytes (dbfd, | |
12732 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12733 | |
73869dc2 DE |
12734 | if (dwp_file->version == 1) |
12735 | { | |
12736 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
12737 | comp_dir, signature, | |
12738 | is_debug_types); | |
12739 | } | |
12740 | else | |
12741 | { | |
12742 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
12743 | comp_dir, signature, | |
12744 | is_debug_types); | |
12745 | } | |
9a3c8263 | 12746 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12747 | } |
12748 | if (signature_in_table == 0) | |
12749 | return NULL; | |
12750 | hash = (hash + hash2) & mask; | |
12751 | } | |
12752 | ||
12753 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12754 | " [in module %s]"), | |
12755 | dwp_file->name); | |
12756 | } | |
12757 | ||
ab5088bf | 12758 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12759 | Open the file specified by FILE_NAME and hand it off to BFD for |
12760 | preliminary analysis. Return a newly initialized bfd *, which | |
12761 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12762 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12763 | SEARCH_CWD is true if the current directory is to be searched. |
12764 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12765 | If successful, the file is added to the bfd include table of the |
12766 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12767 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12768 | NOTE: This function is derived from symfile_bfd_open. */ |
12769 | ||
192b62ce | 12770 | static gdb_bfd_ref_ptr |
6ac97d4c | 12771 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12772 | { |
80626a55 | 12773 | int desc, flags; |
3019eac3 | 12774 | char *absolute_name; |
9c02c129 DE |
12775 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12776 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12777 | to debug_file_directory. */ | |
12778 | char *search_path; | |
12779 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
12780 | ||
6ac97d4c DE |
12781 | if (search_cwd) |
12782 | { | |
12783 | if (*debug_file_directory != '\0') | |
12784 | search_path = concat (".", dirname_separator_string, | |
b36cec19 | 12785 | debug_file_directory, (char *) NULL); |
6ac97d4c DE |
12786 | else |
12787 | search_path = xstrdup ("."); | |
12788 | } | |
9c02c129 | 12789 | else |
6ac97d4c | 12790 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 12791 | |
492c0ab7 | 12792 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12793 | if (is_dwp) |
12794 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 12795 | desc = openp (search_path, flags, file_name, |
3019eac3 | 12796 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 12797 | xfree (search_path); |
3019eac3 DE |
12798 | if (desc < 0) |
12799 | return NULL; | |
12800 | ||
192b62ce | 12801 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name, gnutarget, desc)); |
a4453b7e | 12802 | xfree (absolute_name); |
9c02c129 DE |
12803 | if (sym_bfd == NULL) |
12804 | return NULL; | |
192b62ce | 12805 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12806 | |
192b62ce TT |
12807 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12808 | return NULL; | |
3019eac3 | 12809 | |
13aaf454 DE |
12810 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12811 | This is important because things like demangled_names_hash lives in the | |
12812 | objfile's per_bfd space and may have references to things like symbol | |
12813 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12814 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12815 | |
3019eac3 DE |
12816 | return sym_bfd; |
12817 | } | |
12818 | ||
ab5088bf | 12819 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12820 | COMP_DIR is the DW_AT_comp_dir attribute. |
12821 | The result is the bfd handle of the file. | |
12822 | If there is a problem finding or opening the file, return NULL. | |
12823 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12824 | same as symfile_bfd_open. */ | |
12825 | ||
192b62ce | 12826 | static gdb_bfd_ref_ptr |
ab5088bf | 12827 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 | 12828 | { |
80626a55 | 12829 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 12830 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12831 | |
12832 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12833 | ||
12834 | if (comp_dir != NULL) | |
12835 | { | |
b36cec19 PA |
12836 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12837 | file_name, (char *) NULL); | |
3019eac3 DE |
12838 | |
12839 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12840 | search path, which seems useful. */ | |
192b62ce TT |
12841 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (path_to_try, 0 /*is_dwp*/, |
12842 | 1 /*search_cwd*/)); | |
3019eac3 DE |
12843 | xfree (path_to_try); |
12844 | if (abfd != NULL) | |
12845 | return abfd; | |
12846 | } | |
12847 | ||
12848 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12849 | is a list of paths. */ | |
12850 | ||
12851 | if (*debug_file_directory == '\0') | |
12852 | return NULL; | |
12853 | ||
6ac97d4c | 12854 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12855 | } |
12856 | ||
80626a55 DE |
12857 | /* This function is mapped across the sections and remembers the offset and |
12858 | size of each of the DWO debugging sections we are interested in. */ | |
12859 | ||
12860 | static void | |
12861 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12862 | { | |
9a3c8263 | 12863 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12864 | const struct dwop_section_names *names = &dwop_section_names; |
12865 | ||
12866 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12867 | { | |
049412e3 | 12868 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12869 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12870 | } | |
12871 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12872 | { | |
049412e3 | 12873 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12874 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12875 | } | |
12876 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12877 | { | |
049412e3 | 12878 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12879 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12880 | } | |
12881 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12882 | { | |
049412e3 | 12883 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12884 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12885 | } | |
12886 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12887 | { | |
049412e3 | 12888 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12889 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12890 | } | |
12891 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12892 | { | |
049412e3 | 12893 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12894 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12895 | } | |
12896 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12897 | { | |
049412e3 | 12898 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12899 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12900 | } | |
12901 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12902 | { | |
049412e3 | 12903 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12904 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12905 | } | |
12906 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12907 | { | |
12908 | struct dwarf2_section_info type_section; | |
12909 | ||
12910 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12911 | type_section.s.section = sectp; |
80626a55 DE |
12912 | type_section.size = bfd_get_section_size (sectp); |
12913 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12914 | &type_section); | |
12915 | } | |
12916 | } | |
12917 | ||
ab5088bf | 12918 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12919 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12920 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12921 | |
12922 | static struct dwo_file * | |
0ac5b59e DE |
12923 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12924 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
12925 | { |
12926 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12927 | struct dwo_file *dwo_file; |
3019eac3 DE |
12928 | struct cleanup *cleanups; |
12929 | ||
192b62ce | 12930 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwo_name, comp_dir)); |
80626a55 DE |
12931 | if (dbfd == NULL) |
12932 | { | |
b4f54984 | 12933 | if (dwarf_read_debug) |
80626a55 DE |
12934 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12935 | return NULL; | |
12936 | } | |
12937 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
12938 | dwo_file->dwo_name = dwo_name; |
12939 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 12940 | dwo_file->dbfd = dbfd.release (); |
3019eac3 DE |
12941 | |
12942 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
12943 | ||
192b62ce TT |
12944 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
12945 | &dwo_file->sections); | |
3019eac3 | 12946 | |
33c5cd75 | 12947 | create_cus_hash_table (*dwo_file, dwo_file->sections.info, dwo_file->cus); |
3019eac3 | 12948 | |
78d4d2c5 JK |
12949 | create_debug_types_hash_table (dwo_file, dwo_file->sections.types, |
12950 | dwo_file->tus); | |
3019eac3 DE |
12951 | |
12952 | discard_cleanups (cleanups); | |
12953 | ||
b4f54984 | 12954 | if (dwarf_read_debug) |
80626a55 DE |
12955 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12956 | ||
3019eac3 DE |
12957 | return dwo_file; |
12958 | } | |
12959 | ||
80626a55 | 12960 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12961 | size of each of the DWP debugging sections common to version 1 and 2 that |
12962 | we are interested in. */ | |
3019eac3 | 12963 | |
80626a55 | 12964 | static void |
73869dc2 DE |
12965 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12966 | void *dwp_file_ptr) | |
3019eac3 | 12967 | { |
9a3c8263 | 12968 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12969 | const struct dwop_section_names *names = &dwop_section_names; |
12970 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12971 | |
80626a55 | 12972 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12973 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12974 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12975 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12976 | |
80626a55 DE |
12977 | /* Look for specific sections that we need. */ |
12978 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12979 | { | |
049412e3 | 12980 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
12981 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
12982 | } | |
12983 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12984 | { | |
049412e3 | 12985 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
12986 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
12987 | } | |
12988 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12989 | { | |
049412e3 | 12990 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
12991 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
12992 | } | |
12993 | } | |
3019eac3 | 12994 | |
73869dc2 DE |
12995 | /* This function is mapped across the sections and remembers the offset and |
12996 | size of each of the DWP version 2 debugging sections that we are interested | |
12997 | in. This is split into a separate function because we don't know if we | |
12998 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12999 | ||
13000 | static void | |
13001 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13002 | { | |
9a3c8263 | 13003 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13004 | const struct dwop_section_names *names = &dwop_section_names; |
13005 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13006 | ||
13007 | /* Record the ELF section number for later lookup: this is what the | |
13008 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13009 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13010 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13011 | ||
13012 | /* Look for specific sections that we need. */ | |
13013 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13014 | { | |
049412e3 | 13015 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13016 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13017 | } | |
13018 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13019 | { | |
049412e3 | 13020 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13021 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13022 | } | |
13023 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13024 | { | |
049412e3 | 13025 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13026 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13027 | } | |
13028 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13029 | { | |
049412e3 | 13030 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13031 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13032 | } | |
13033 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13034 | { | |
049412e3 | 13035 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13036 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13037 | } | |
13038 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13039 | { | |
049412e3 | 13040 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13041 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13042 | } | |
13043 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13044 | { | |
049412e3 | 13045 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13046 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13047 | } | |
13048 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13049 | { | |
049412e3 | 13050 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13051 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13052 | } | |
13053 | } | |
13054 | ||
80626a55 | 13055 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13056 | |
80626a55 DE |
13057 | static hashval_t |
13058 | hash_dwp_loaded_cutus (const void *item) | |
13059 | { | |
9a3c8263 | 13060 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13061 | |
80626a55 DE |
13062 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13063 | return dwo_unit->signature; | |
3019eac3 DE |
13064 | } |
13065 | ||
80626a55 | 13066 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13067 | |
80626a55 DE |
13068 | static int |
13069 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13070 | { |
9a3c8263 SM |
13071 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13072 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13073 | |
80626a55 DE |
13074 | return dua->signature == dub->signature; |
13075 | } | |
3019eac3 | 13076 | |
80626a55 | 13077 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13078 | |
80626a55 DE |
13079 | static htab_t |
13080 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13081 | { | |
13082 | return htab_create_alloc_ex (3, | |
13083 | hash_dwp_loaded_cutus, | |
13084 | eq_dwp_loaded_cutus, | |
13085 | NULL, | |
13086 | &objfile->objfile_obstack, | |
13087 | hashtab_obstack_allocate, | |
13088 | dummy_obstack_deallocate); | |
13089 | } | |
3019eac3 | 13090 | |
ab5088bf DE |
13091 | /* Try to open DWP file FILE_NAME. |
13092 | The result is the bfd handle of the file. | |
13093 | If there is a problem finding or opening the file, return NULL. | |
13094 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13095 | same as symfile_bfd_open. */ | |
13096 | ||
192b62ce | 13097 | static gdb_bfd_ref_ptr |
ab5088bf DE |
13098 | open_dwp_file (const char *file_name) |
13099 | { | |
192b62ce TT |
13100 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (file_name, 1 /*is_dwp*/, |
13101 | 1 /*search_cwd*/)); | |
6ac97d4c DE |
13102 | if (abfd != NULL) |
13103 | return abfd; | |
13104 | ||
13105 | /* Work around upstream bug 15652. | |
13106 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13107 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13108 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13109 | of the executable's path may have discarded the needed info. | |
13110 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13111 | .gnu_debuglink, but that doesn't exist yet.] | |
13112 | Strip the directory from FILE_NAME and search again. */ | |
13113 | if (*debug_file_directory != '\0') | |
13114 | { | |
13115 | /* Don't implicitly search the current directory here. | |
13116 | If the user wants to search "." to handle this case, | |
13117 | it must be added to debug-file-directory. */ | |
13118 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
13119 | 0 /*search_cwd*/); | |
13120 | } | |
13121 | ||
13122 | return NULL; | |
ab5088bf DE |
13123 | } |
13124 | ||
80626a55 DE |
13125 | /* Initialize the use of the DWP file for the current objfile. |
13126 | By convention the name of the DWP file is ${objfile}.dwp. | |
13127 | The result is NULL if it can't be found. */ | |
a766d390 | 13128 | |
80626a55 | 13129 | static struct dwp_file * |
ab5088bf | 13130 | open_and_init_dwp_file (void) |
80626a55 DE |
13131 | { |
13132 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13133 | struct dwp_file *dwp_file; | |
80626a55 | 13134 | |
82bf32bc JK |
13135 | /* Try to find first .dwp for the binary file before any symbolic links |
13136 | resolving. */ | |
6c447423 DE |
13137 | |
13138 | /* If the objfile is a debug file, find the name of the real binary | |
13139 | file and get the name of dwp file from there. */ | |
d721ba37 | 13140 | std::string dwp_name; |
6c447423 DE |
13141 | if (objfile->separate_debug_objfile_backlink != NULL) |
13142 | { | |
13143 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13144 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13145 | |
d721ba37 | 13146 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13147 | } |
13148 | else | |
d721ba37 PA |
13149 | dwp_name = objfile->original_name; |
13150 | ||
13151 | dwp_name += ".dwp"; | |
80626a55 | 13152 | |
d721ba37 | 13153 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwp_name.c_str ())); |
82bf32bc JK |
13154 | if (dbfd == NULL |
13155 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13156 | { | |
13157 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13158 | dwp_name = objfile_name (objfile); |
13159 | dwp_name += ".dwp"; | |
13160 | dbfd = open_dwp_file (dwp_name.c_str ()); | |
82bf32bc JK |
13161 | } |
13162 | ||
80626a55 DE |
13163 | if (dbfd == NULL) |
13164 | { | |
b4f54984 | 13165 | if (dwarf_read_debug) |
d721ba37 | 13166 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
80626a55 | 13167 | return NULL; |
3019eac3 | 13168 | } |
80626a55 | 13169 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
13170 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
13171 | dwp_file->dbfd = dbfd.release (); | |
c906108c | 13172 | |
80626a55 | 13173 | /* +1: section 0 is unused */ |
192b62ce | 13174 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13175 | dwp_file->elf_sections = |
13176 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13177 | dwp_file->num_sections, asection *); | |
13178 | ||
192b62ce TT |
13179 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
13180 | dwp_file); | |
80626a55 DE |
13181 | |
13182 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
13183 | ||
13184 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
13185 | ||
73869dc2 | 13186 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13187 | if (dwp_file->cus && dwp_file->tus |
13188 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13189 | { |
13190 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13191 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13192 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13193 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13194 | " TU version %s [in DWP file %s]"), | |
13195 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13196 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13197 | } |
08302ed2 DE |
13198 | |
13199 | if (dwp_file->cus) | |
13200 | dwp_file->version = dwp_file->cus->version; | |
13201 | else if (dwp_file->tus) | |
13202 | dwp_file->version = dwp_file->tus->version; | |
13203 | else | |
13204 | dwp_file->version = 2; | |
73869dc2 DE |
13205 | |
13206 | if (dwp_file->version == 2) | |
192b62ce TT |
13207 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
13208 | dwp_file); | |
73869dc2 | 13209 | |
19ac8c2e DE |
13210 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13211 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13212 | |
b4f54984 | 13213 | if (dwarf_read_debug) |
80626a55 DE |
13214 | { |
13215 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13216 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13217 | " %s CUs, %s TUs\n", |
13218 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13219 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13220 | } |
13221 | ||
13222 | return dwp_file; | |
3019eac3 | 13223 | } |
c906108c | 13224 | |
ab5088bf DE |
13225 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13226 | ||
13227 | static struct dwp_file * | |
13228 | get_dwp_file (void) | |
13229 | { | |
13230 | if (! dwarf2_per_objfile->dwp_checked) | |
13231 | { | |
13232 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
13233 | dwarf2_per_objfile->dwp_checked = 1; | |
13234 | } | |
13235 | return dwarf2_per_objfile->dwp_file; | |
13236 | } | |
13237 | ||
80626a55 DE |
13238 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13239 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13240 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13241 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13242 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13243 | ||
13244 | This is called, for example, when wanting to read a variable with a | |
13245 | complex location. Therefore we don't want to do file i/o for every call. | |
13246 | Therefore we don't want to look for a DWO file on every call. | |
13247 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13248 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13249 | for a DWO file. | |
13250 | ||
1c658ad5 | 13251 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13252 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13253 | |
3019eac3 | 13254 | static struct dwo_unit * |
80626a55 DE |
13255 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13256 | const char *dwo_name, const char *comp_dir, | |
13257 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
13258 | { |
13259 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
13260 | const char *kind = is_debug_types ? "TU" : "CU"; |
13261 | void **dwo_file_slot; | |
3019eac3 | 13262 | struct dwo_file *dwo_file; |
80626a55 | 13263 | struct dwp_file *dwp_file; |
cb1df416 | 13264 | |
6a506a2d DE |
13265 | /* First see if there's a DWP file. |
13266 | If we have a DWP file but didn't find the DWO inside it, don't | |
13267 | look for the original DWO file. It makes gdb behave differently | |
13268 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13269 | |
ab5088bf | 13270 | dwp_file = get_dwp_file (); |
80626a55 | 13271 | if (dwp_file != NULL) |
cf2c3c16 | 13272 | { |
80626a55 DE |
13273 | const struct dwp_hash_table *dwp_htab = |
13274 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13275 | ||
13276 | if (dwp_htab != NULL) | |
13277 | { | |
13278 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
13279 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
13280 | signature, is_debug_types); | |
80626a55 DE |
13281 | |
13282 | if (dwo_cutu != NULL) | |
13283 | { | |
b4f54984 | 13284 | if (dwarf_read_debug) |
80626a55 DE |
13285 | { |
13286 | fprintf_unfiltered (gdb_stdlog, | |
13287 | "Virtual DWO %s %s found: @%s\n", | |
13288 | kind, hex_string (signature), | |
13289 | host_address_to_string (dwo_cutu)); | |
13290 | } | |
13291 | return dwo_cutu; | |
13292 | } | |
13293 | } | |
13294 | } | |
6a506a2d | 13295 | else |
80626a55 | 13296 | { |
6a506a2d | 13297 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13298 | |
6a506a2d DE |
13299 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
13300 | if (*dwo_file_slot == NULL) | |
80626a55 | 13301 | { |
6a506a2d DE |
13302 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13303 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13304 | } |
6a506a2d | 13305 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13306 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13307 | |
6a506a2d | 13308 | if (dwo_file != NULL) |
19c3d4c9 | 13309 | { |
6a506a2d DE |
13310 | struct dwo_unit *dwo_cutu = NULL; |
13311 | ||
13312 | if (is_debug_types && dwo_file->tus) | |
13313 | { | |
13314 | struct dwo_unit find_dwo_cutu; | |
13315 | ||
13316 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13317 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13318 | dwo_cutu |
13319 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13320 | } |
33c5cd75 | 13321 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13322 | { |
33c5cd75 DB |
13323 | struct dwo_unit find_dwo_cutu; |
13324 | ||
13325 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13326 | find_dwo_cutu.signature = signature; | |
13327 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13328 | &find_dwo_cutu); | |
6a506a2d DE |
13329 | } |
13330 | ||
13331 | if (dwo_cutu != NULL) | |
13332 | { | |
b4f54984 | 13333 | if (dwarf_read_debug) |
6a506a2d DE |
13334 | { |
13335 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13336 | kind, dwo_name, hex_string (signature), | |
13337 | host_address_to_string (dwo_cutu)); | |
13338 | } | |
13339 | return dwo_cutu; | |
80626a55 DE |
13340 | } |
13341 | } | |
2e276125 | 13342 | } |
9cdd5dbd | 13343 | |
80626a55 DE |
13344 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13345 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13346 | correctly to find the file. */ | |
13347 | ||
b4f54984 | 13348 | if (dwarf_read_debug) |
80626a55 DE |
13349 | { |
13350 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13351 | kind, dwo_name, hex_string (signature)); | |
13352 | } | |
3019eac3 | 13353 | |
6656a72d DE |
13354 | /* This is a warning and not a complaint because it can be caused by |
13355 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13356 | { |
13357 | /* Print the name of the DWP file if we looked there, helps the user | |
13358 | better diagnose the problem. */ | |
791afaa2 | 13359 | std::string dwp_text; |
43942612 DE |
13360 | |
13361 | if (dwp_file != NULL) | |
791afaa2 TT |
13362 | dwp_text = string_printf (" [in DWP file %s]", |
13363 | lbasename (dwp_file->name)); | |
43942612 DE |
13364 | |
13365 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
13366 | " [in module %s]"), | |
13367 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13368 | dwp_text.c_str (), |
43942612 | 13369 | this_unit->is_debug_types ? "TU" : "CU", |
9c541725 | 13370 | to_underlying (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13371 | } |
3019eac3 | 13372 | return NULL; |
5fb290d7 DJ |
13373 | } |
13374 | ||
80626a55 DE |
13375 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13376 | See lookup_dwo_cutu_unit for details. */ | |
13377 | ||
13378 | static struct dwo_unit * | |
13379 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13380 | const char *dwo_name, const char *comp_dir, | |
13381 | ULONGEST signature) | |
13382 | { | |
13383 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13384 | } | |
13385 | ||
13386 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13387 | See lookup_dwo_cutu_unit for details. */ | |
13388 | ||
13389 | static struct dwo_unit * | |
13390 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13391 | const char *dwo_name, const char *comp_dir) | |
13392 | { | |
13393 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13394 | } | |
13395 | ||
89e63ee4 DE |
13396 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13397 | ||
13398 | static int | |
13399 | queue_and_load_dwo_tu (void **slot, void *info) | |
13400 | { | |
13401 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13402 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13403 | ULONGEST signature = dwo_unit->signature; | |
13404 | struct signatured_type *sig_type = | |
13405 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13406 | ||
13407 | if (sig_type != NULL) | |
13408 | { | |
13409 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13410 | ||
13411 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13412 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13413 | while processing PER_CU. */ | |
13414 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13415 | load_full_type_unit (sig_cu); | |
13416 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13417 | } | |
13418 | ||
13419 | return 1; | |
13420 | } | |
13421 | ||
13422 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13423 | The DWO may have the only definition of the type, though it may not be | |
13424 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13425 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13426 | ||
13427 | static void | |
13428 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13429 | { | |
13430 | struct dwo_unit *dwo_unit; | |
13431 | struct dwo_file *dwo_file; | |
13432 | ||
13433 | gdb_assert (!per_cu->is_debug_types); | |
13434 | gdb_assert (get_dwp_file () == NULL); | |
13435 | gdb_assert (per_cu->cu != NULL); | |
13436 | ||
13437 | dwo_unit = per_cu->cu->dwo_unit; | |
13438 | gdb_assert (dwo_unit != NULL); | |
13439 | ||
13440 | dwo_file = dwo_unit->dwo_file; | |
13441 | if (dwo_file->tus != NULL) | |
13442 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13443 | } | |
13444 | ||
3019eac3 DE |
13445 | /* Free all resources associated with DWO_FILE. |
13446 | Close the DWO file and munmap the sections. | |
13447 | All memory should be on the objfile obstack. */ | |
348e048f DE |
13448 | |
13449 | static void | |
3019eac3 | 13450 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 13451 | { |
348e048f | 13452 | |
5c6fa7ab | 13453 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13454 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13455 | |
3019eac3 DE |
13456 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13457 | } | |
348e048f | 13458 | |
3019eac3 | 13459 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 13460 | |
3019eac3 DE |
13461 | static void |
13462 | free_dwo_file_cleanup (void *arg) | |
13463 | { | |
13464 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
13465 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 13466 | |
3019eac3 DE |
13467 | free_dwo_file (dwo_file, objfile); |
13468 | } | |
348e048f | 13469 | |
3019eac3 | 13470 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13471 | |
3019eac3 DE |
13472 | static int |
13473 | free_dwo_file_from_slot (void **slot, void *info) | |
13474 | { | |
13475 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
13476 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 13477 | |
3019eac3 | 13478 | free_dwo_file (dwo_file, objfile); |
348e048f | 13479 | |
3019eac3 DE |
13480 | return 1; |
13481 | } | |
348e048f | 13482 | |
3019eac3 | 13483 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13484 | |
3019eac3 DE |
13485 | static void |
13486 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13487 | { | |
13488 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13489 | } |
3019eac3 DE |
13490 | \f |
13491 | /* Read in various DIEs. */ | |
348e048f | 13492 | |
d389af10 | 13493 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13494 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13495 | already referenced by DW_AT_abstract_origin from the children of the | |
13496 | current DIE. */ | |
d389af10 JK |
13497 | |
13498 | static void | |
13499 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13500 | { | |
13501 | struct die_info *child_die; | |
791afaa2 | 13502 | sect_offset *offsetp; |
d389af10 JK |
13503 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13504 | struct die_info *origin_die; | |
13505 | /* Iterator of the ORIGIN_DIE children. */ | |
13506 | struct die_info *origin_child_die; | |
d389af10 | 13507 | struct attribute *attr; |
cd02d79d PA |
13508 | struct dwarf2_cu *origin_cu; |
13509 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13510 | |
13511 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13512 | if (!attr) | |
13513 | return; | |
13514 | ||
cd02d79d PA |
13515 | /* Note that following die references may follow to a die in a |
13516 | different cu. */ | |
13517 | ||
13518 | origin_cu = cu; | |
13519 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13520 | ||
13521 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13522 | symbols in. */ | |
13523 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13524 | origin_cu->list_in_scope = cu->list_in_scope; | |
13525 | ||
edb3359d DJ |
13526 | if (die->tag != origin_die->tag |
13527 | && !(die->tag == DW_TAG_inlined_subroutine | |
13528 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
13529 | complaint (&symfile_complaints, |
13530 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
9c541725 PA |
13531 | to_underlying (die->sect_off), |
13532 | to_underlying (origin_die->sect_off)); | |
d389af10 | 13533 | |
791afaa2 | 13534 | std::vector<sect_offset> offsets; |
d389af10 | 13535 | |
3ea89b92 PMR |
13536 | for (child_die = die->child; |
13537 | child_die && child_die->tag; | |
13538 | child_die = sibling_die (child_die)) | |
13539 | { | |
13540 | struct die_info *child_origin_die; | |
13541 | struct dwarf2_cu *child_origin_cu; | |
13542 | ||
13543 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13544 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13545 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13546 | present in the abstract instance but not referenced in the concrete | |
13547 | one. */ | |
216f72a1 JK |
13548 | if (child_die->tag == DW_TAG_call_site |
13549 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13550 | continue; |
13551 | ||
c38f313d DJ |
13552 | /* For each CHILD_DIE, find the corresponding child of |
13553 | ORIGIN_DIE. If there is more than one layer of | |
13554 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13555 | but GCC versions at least through 4.4 generate this (GCC PR | |
13556 | 40573). */ | |
3ea89b92 PMR |
13557 | child_origin_die = child_die; |
13558 | child_origin_cu = cu; | |
c38f313d DJ |
13559 | while (1) |
13560 | { | |
cd02d79d PA |
13561 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13562 | child_origin_cu); | |
c38f313d DJ |
13563 | if (attr == NULL) |
13564 | break; | |
cd02d79d PA |
13565 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13566 | &child_origin_cu); | |
c38f313d DJ |
13567 | } |
13568 | ||
d389af10 JK |
13569 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13570 | counterpart may exist. */ | |
c38f313d | 13571 | if (child_origin_die != child_die) |
d389af10 | 13572 | { |
edb3359d DJ |
13573 | if (child_die->tag != child_origin_die->tag |
13574 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13575 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
13576 | complaint (&symfile_complaints, |
13577 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
9c541725 PA |
13578 | "different tags"), |
13579 | to_underlying (child_die->sect_off), | |
13580 | to_underlying (child_origin_die->sect_off)); | |
c38f313d DJ |
13581 | if (child_origin_die->parent != origin_die) |
13582 | complaint (&symfile_complaints, | |
13583 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
9c541725 PA |
13584 | "different parents"), |
13585 | to_underlying (child_die->sect_off), | |
13586 | to_underlying (child_origin_die->sect_off)); | |
c38f313d | 13587 | else |
791afaa2 | 13588 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13589 | } |
d389af10 | 13590 | } |
791afaa2 TT |
13591 | std::sort (offsets.begin (), offsets.end ()); |
13592 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13593 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13594 | if (offsetp[-1] == *offsetp) |
3e43a32a MS |
13595 | complaint (&symfile_complaints, |
13596 | _("Multiple children of DIE 0x%x refer " | |
13597 | "to DIE 0x%x as their abstract origin"), | |
9c541725 | 13598 | to_underlying (die->sect_off), to_underlying (*offsetp)); |
d389af10 | 13599 | |
791afaa2 | 13600 | offsetp = offsets.data (); |
d389af10 JK |
13601 | origin_child_die = origin_die->child; |
13602 | while (origin_child_die && origin_child_die->tag) | |
13603 | { | |
13604 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13605 | while (offsetp < offsets_end |
9c541725 | 13606 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13607 | offsetp++; |
b64f50a1 | 13608 | if (offsetp >= offsets_end |
9c541725 | 13609 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13610 | { |
adde2bff DE |
13611 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13612 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13613 | This can happen with mutually referenced abstract_origins. | |
13614 | PR 16581. */ | |
13615 | if (!origin_child_die->in_process) | |
13616 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13617 | } |
13618 | origin_child_die = sibling_die (origin_child_die); | |
13619 | } | |
cd02d79d | 13620 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13621 | } |
13622 | ||
c906108c | 13623 | static void |
e7c27a73 | 13624 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13625 | { |
e7c27a73 | 13626 | struct objfile *objfile = cu->objfile; |
3e29f34a | 13627 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13628 | struct context_stack *newobj; |
c906108c SS |
13629 | CORE_ADDR lowpc; |
13630 | CORE_ADDR highpc; | |
13631 | struct die_info *child_die; | |
edb3359d | 13632 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13633 | const char *name; |
e142c38c | 13634 | CORE_ADDR baseaddr; |
801e3a5b | 13635 | struct block *block; |
edb3359d | 13636 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13637 | std::vector<struct symbol *> template_args; |
34eaf542 | 13638 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13639 | |
13640 | if (inlined_func) | |
13641 | { | |
13642 | /* If we do not have call site information, we can't show the | |
13643 | caller of this inlined function. That's too confusing, so | |
13644 | only use the scope for local variables. */ | |
13645 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13646 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13647 | if (call_line == NULL || call_file == NULL) | |
13648 | { | |
13649 | read_lexical_block_scope (die, cu); | |
13650 | return; | |
13651 | } | |
13652 | } | |
c906108c | 13653 | |
e142c38c DJ |
13654 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13655 | ||
94af9270 | 13656 | name = dwarf2_name (die, cu); |
c906108c | 13657 | |
e8d05480 JB |
13658 | /* Ignore functions with missing or empty names. These are actually |
13659 | illegal according to the DWARF standard. */ | |
13660 | if (name == NULL) | |
13661 | { | |
13662 | complaint (&symfile_complaints, | |
b64f50a1 | 13663 | _("missing name for subprogram DIE at %d"), |
9c541725 | 13664 | to_underlying (die->sect_off)); |
e8d05480 JB |
13665 | return; |
13666 | } | |
13667 | ||
13668 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13669 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13670 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13671 | { |
ae4d0c03 PM |
13672 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13673 | if (!attr || !DW_UNSND (attr)) | |
13674 | complaint (&symfile_complaints, | |
3e43a32a MS |
13675 | _("cannot get low and high bounds " |
13676 | "for subprogram DIE at %d"), | |
9c541725 | 13677 | to_underlying (die->sect_off)); |
e8d05480 JB |
13678 | return; |
13679 | } | |
c906108c | 13680 | |
3e29f34a MR |
13681 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13682 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13683 | |
34eaf542 TT |
13684 | /* If we have any template arguments, then we must allocate a |
13685 | different sort of symbol. */ | |
13686 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13687 | { | |
13688 | if (child_die->tag == DW_TAG_template_type_param | |
13689 | || child_die->tag == DW_TAG_template_value_param) | |
13690 | { | |
e623cf5d | 13691 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13692 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13693 | break; |
13694 | } | |
13695 | } | |
13696 | ||
fe978cb0 PA |
13697 | newobj = push_context (0, lowpc); |
13698 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 13699 | (struct symbol *) templ_func); |
4c2df51b | 13700 | |
4cecd739 DJ |
13701 | /* If there is a location expression for DW_AT_frame_base, record |
13702 | it. */ | |
e142c38c | 13703 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13704 | if (attr) |
fe978cb0 | 13705 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13706 | |
63e43d3a PMR |
13707 | /* If there is a location for the static link, record it. */ |
13708 | newobj->static_link = NULL; | |
13709 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13710 | if (attr) | |
13711 | { | |
224c3ddb SM |
13712 | newobj->static_link |
13713 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13714 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13715 | } | |
13716 | ||
e142c38c | 13717 | cu->list_in_scope = &local_symbols; |
c906108c | 13718 | |
639d11d3 | 13719 | if (die->child != NULL) |
c906108c | 13720 | { |
639d11d3 | 13721 | child_die = die->child; |
c906108c SS |
13722 | while (child_die && child_die->tag) |
13723 | { | |
34eaf542 TT |
13724 | if (child_die->tag == DW_TAG_template_type_param |
13725 | || child_die->tag == DW_TAG_template_value_param) | |
13726 | { | |
13727 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13728 | ||
f1078f66 | 13729 | if (arg != NULL) |
2f4732b0 | 13730 | template_args.push_back (arg); |
34eaf542 TT |
13731 | } |
13732 | else | |
13733 | process_die (child_die, cu); | |
c906108c SS |
13734 | child_die = sibling_die (child_die); |
13735 | } | |
13736 | } | |
13737 | ||
d389af10 JK |
13738 | inherit_abstract_dies (die, cu); |
13739 | ||
4a811a97 UW |
13740 | /* If we have a DW_AT_specification, we might need to import using |
13741 | directives from the context of the specification DIE. See the | |
13742 | comment in determine_prefix. */ | |
13743 | if (cu->language == language_cplus | |
13744 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13745 | { | |
13746 | struct dwarf2_cu *spec_cu = cu; | |
13747 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13748 | ||
13749 | while (spec_die) | |
13750 | { | |
13751 | child_die = spec_die->child; | |
13752 | while (child_die && child_die->tag) | |
13753 | { | |
13754 | if (child_die->tag == DW_TAG_imported_module) | |
13755 | process_die (child_die, spec_cu); | |
13756 | child_die = sibling_die (child_die); | |
13757 | } | |
13758 | ||
13759 | /* In some cases, GCC generates specification DIEs that | |
13760 | themselves contain DW_AT_specification attributes. */ | |
13761 | spec_die = die_specification (spec_die, &spec_cu); | |
13762 | } | |
13763 | } | |
13764 | ||
fe978cb0 | 13765 | newobj = pop_context (); |
c906108c | 13766 | /* Make a block for the local symbols within. */ |
fe978cb0 | 13767 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 13768 | newobj->static_link, lowpc, highpc); |
801e3a5b | 13769 | |
df8a16a1 | 13770 | /* For C++, set the block's scope. */ |
45280282 IB |
13771 | if ((cu->language == language_cplus |
13772 | || cu->language == language_fortran | |
c44af4eb TT |
13773 | || cu->language == language_d |
13774 | || cu->language == language_rust) | |
4d4ec4e5 | 13775 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13776 | block_set_scope (block, determine_prefix (die, cu), |
13777 | &objfile->objfile_obstack); | |
df8a16a1 | 13778 | |
801e3a5b JB |
13779 | /* If we have address ranges, record them. */ |
13780 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13781 | |
fe978cb0 | 13782 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 13783 | |
34eaf542 | 13784 | /* Attach template arguments to function. */ |
2f4732b0 | 13785 | if (!template_args.empty ()) |
34eaf542 TT |
13786 | { |
13787 | gdb_assert (templ_func != NULL); | |
13788 | ||
2f4732b0 | 13789 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13790 | templ_func->template_arguments |
8d749320 SM |
13791 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13792 | templ_func->n_template_arguments); | |
34eaf542 | 13793 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13794 | template_args.data (), |
34eaf542 | 13795 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
34eaf542 TT |
13796 | } |
13797 | ||
208d8187 JB |
13798 | /* In C++, we can have functions nested inside functions (e.g., when |
13799 | a function declares a class that has methods). This means that | |
13800 | when we finish processing a function scope, we may need to go | |
13801 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 13802 | local_symbols = newobj->locals; |
22cee43f | 13803 | local_using_directives = newobj->local_using_directives; |
208d8187 | 13804 | |
921e78cf JB |
13805 | /* If we've finished processing a top-level function, subsequent |
13806 | symbols go in the file symbol list. */ | |
13807 | if (outermost_context_p ()) | |
e142c38c | 13808 | cu->list_in_scope = &file_symbols; |
c906108c SS |
13809 | } |
13810 | ||
13811 | /* Process all the DIES contained within a lexical block scope. Start | |
13812 | a new scope, process the dies, and then close the scope. */ | |
13813 | ||
13814 | static void | |
e7c27a73 | 13815 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13816 | { |
e7c27a73 | 13817 | struct objfile *objfile = cu->objfile; |
3e29f34a | 13818 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13819 | struct context_stack *newobj; |
c906108c SS |
13820 | CORE_ADDR lowpc, highpc; |
13821 | struct die_info *child_die; | |
e142c38c DJ |
13822 | CORE_ADDR baseaddr; |
13823 | ||
13824 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13825 | |
13826 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13827 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13828 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13829 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13830 | describe ranges. */ |
e385593e JK |
13831 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13832 | { | |
13833 | case PC_BOUNDS_NOT_PRESENT: | |
13834 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13835 | there was no wrapping by that DW_TAG_lexical_block. | |
13836 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13837 | for (child_die = die->child; | |
13838 | child_die != NULL && child_die->tag; | |
13839 | child_die = sibling_die (child_die)) | |
13840 | process_die (child_die, cu); | |
13841 | return; | |
13842 | case PC_BOUNDS_INVALID: | |
13843 | return; | |
13844 | } | |
3e29f34a MR |
13845 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13846 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
13847 | |
13848 | push_context (0, lowpc); | |
639d11d3 | 13849 | if (die->child != NULL) |
c906108c | 13850 | { |
639d11d3 | 13851 | child_die = die->child; |
c906108c SS |
13852 | while (child_die && child_die->tag) |
13853 | { | |
e7c27a73 | 13854 | process_die (child_die, cu); |
c906108c SS |
13855 | child_die = sibling_die (child_die); |
13856 | } | |
13857 | } | |
3ea89b92 | 13858 | inherit_abstract_dies (die, cu); |
fe978cb0 | 13859 | newobj = pop_context (); |
c906108c | 13860 | |
22cee43f | 13861 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 13862 | { |
801e3a5b | 13863 | struct block *block |
63e43d3a | 13864 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 13865 | newobj->start_addr, highpc); |
801e3a5b JB |
13866 | |
13867 | /* Note that recording ranges after traversing children, as we | |
13868 | do here, means that recording a parent's ranges entails | |
13869 | walking across all its children's ranges as they appear in | |
13870 | the address map, which is quadratic behavior. | |
13871 | ||
13872 | It would be nicer to record the parent's ranges before | |
13873 | traversing its children, simply overriding whatever you find | |
13874 | there. But since we don't even decide whether to create a | |
13875 | block until after we've traversed its children, that's hard | |
13876 | to do. */ | |
13877 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13878 | } |
fe978cb0 | 13879 | local_symbols = newobj->locals; |
22cee43f | 13880 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
13881 | } |
13882 | ||
216f72a1 | 13883 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13884 | |
13885 | static void | |
13886 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13887 | { | |
13888 | struct objfile *objfile = cu->objfile; | |
13889 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
13890 | CORE_ADDR pc, baseaddr; | |
13891 | struct attribute *attr; | |
13892 | struct call_site *call_site, call_site_local; | |
13893 | void **slot; | |
13894 | int nparams; | |
13895 | struct die_info *child_die; | |
13896 | ||
13897 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13898 | ||
216f72a1 JK |
13899 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13900 | if (attr == NULL) | |
13901 | { | |
13902 | /* This was a pre-DWARF-5 GNU extension alias | |
13903 | for DW_AT_call_return_pc. */ | |
13904 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13905 | } | |
96408a79 SA |
13906 | if (!attr) |
13907 | { | |
13908 | complaint (&symfile_complaints, | |
216f72a1 | 13909 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
96408a79 | 13910 | "DIE 0x%x [in module %s]"), |
9c541725 | 13911 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
13912 | return; |
13913 | } | |
31aa7e4e | 13914 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13915 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13916 | |
13917 | if (cu->call_site_htab == NULL) | |
13918 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13919 | NULL, &objfile->objfile_obstack, | |
13920 | hashtab_obstack_allocate, NULL); | |
13921 | call_site_local.pc = pc; | |
13922 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13923 | if (*slot != NULL) | |
13924 | { | |
13925 | complaint (&symfile_complaints, | |
216f72a1 | 13926 | _("Duplicate PC %s for DW_TAG_call_site " |
96408a79 | 13927 | "DIE 0x%x [in module %s]"), |
9c541725 | 13928 | paddress (gdbarch, pc), to_underlying (die->sect_off), |
4262abfb | 13929 | objfile_name (objfile)); |
96408a79 SA |
13930 | return; |
13931 | } | |
13932 | ||
13933 | /* Count parameters at the caller. */ | |
13934 | ||
13935 | nparams = 0; | |
13936 | for (child_die = die->child; child_die && child_die->tag; | |
13937 | child_die = sibling_die (child_die)) | |
13938 | { | |
216f72a1 JK |
13939 | if (child_die->tag != DW_TAG_call_site_parameter |
13940 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13941 | { |
13942 | complaint (&symfile_complaints, | |
216f72a1 JK |
13943 | _("Tag %d is not DW_TAG_call_site_parameter in " |
13944 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 | 13945 | child_die->tag, to_underlying (child_die->sect_off), |
4262abfb | 13946 | objfile_name (objfile)); |
96408a79 SA |
13947 | continue; |
13948 | } | |
13949 | ||
13950 | nparams++; | |
13951 | } | |
13952 | ||
224c3ddb SM |
13953 | call_site |
13954 | = ((struct call_site *) | |
13955 | obstack_alloc (&objfile->objfile_obstack, | |
13956 | sizeof (*call_site) | |
13957 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13958 | *slot = call_site; |
13959 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13960 | call_site->pc = pc; | |
13961 | ||
216f72a1 JK |
13962 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13963 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13964 | { |
13965 | struct die_info *func_die; | |
13966 | ||
13967 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13968 | for (func_die = die->parent; | |
13969 | func_die && func_die->tag != DW_TAG_subprogram | |
13970 | && func_die->tag != DW_TAG_subroutine_type; | |
13971 | func_die = func_die->parent); | |
13972 | ||
216f72a1 JK |
13973 | /* DW_AT_call_all_calls is a superset |
13974 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13975 | if (func_die |
216f72a1 | 13976 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13977 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13978 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13979 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13980 | { | |
13981 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13982 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13983 | both the initial caller containing the real return address PC and | |
13984 | the final callee containing the current PC of a chain of tail | |
13985 | calls do not need to have the tail call list complete. But any | |
13986 | function candidate for a virtual tail call frame searched via | |
13987 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13988 | determined unambiguously. */ | |
13989 | } | |
13990 | else | |
13991 | { | |
13992 | struct type *func_type = NULL; | |
13993 | ||
13994 | if (func_die) | |
13995 | func_type = get_die_type (func_die, cu); | |
13996 | if (func_type != NULL) | |
13997 | { | |
13998 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13999 | ||
14000 | /* Enlist this call site to the function. */ | |
14001 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14002 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14003 | } | |
14004 | else | |
14005 | complaint (&symfile_complaints, | |
216f72a1 | 14006 | _("Cannot find function owning DW_TAG_call_site " |
96408a79 | 14007 | "DIE 0x%x [in module %s]"), |
9c541725 | 14008 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14009 | } |
14010 | } | |
14011 | ||
216f72a1 JK |
14012 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14013 | if (attr == NULL) | |
14014 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14015 | if (attr == NULL) | |
14016 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14017 | if (attr == NULL) |
216f72a1 JK |
14018 | { |
14019 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14020 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14021 | } | |
96408a79 SA |
14022 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14023 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14024 | /* Keep NULL DWARF_BLOCK. */; | |
14025 | else if (attr_form_is_block (attr)) | |
14026 | { | |
14027 | struct dwarf2_locexpr_baton *dlbaton; | |
14028 | ||
8d749320 | 14029 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14030 | dlbaton->data = DW_BLOCK (attr)->data; |
14031 | dlbaton->size = DW_BLOCK (attr)->size; | |
14032 | dlbaton->per_cu = cu->per_cu; | |
14033 | ||
14034 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14035 | } | |
7771576e | 14036 | else if (attr_form_is_ref (attr)) |
96408a79 | 14037 | { |
96408a79 SA |
14038 | struct dwarf2_cu *target_cu = cu; |
14039 | struct die_info *target_die; | |
14040 | ||
ac9ec31b | 14041 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
14042 | gdb_assert (target_cu->objfile == objfile); |
14043 | if (die_is_declaration (target_die, target_cu)) | |
14044 | { | |
7d45c7c3 | 14045 | const char *target_physname; |
9112db09 JK |
14046 | |
14047 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14048 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14049 | if (target_physname == NULL) |
9112db09 | 14050 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
14051 | if (target_physname == NULL) |
14052 | complaint (&symfile_complaints, | |
216f72a1 | 14053 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 14054 | "physname, for referencing DIE 0x%x [in module %s]"), |
9c541725 | 14055 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 | 14056 | else |
7d455152 | 14057 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14058 | } |
14059 | else | |
14060 | { | |
14061 | CORE_ADDR lowpc; | |
14062 | ||
14063 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14064 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14065 | <= PC_BOUNDS_INVALID) |
96408a79 | 14066 | complaint (&symfile_complaints, |
216f72a1 | 14067 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 14068 | "low pc, for referencing DIE 0x%x [in module %s]"), |
9c541725 | 14069 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 | 14070 | else |
3e29f34a MR |
14071 | { |
14072 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14073 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14074 | } | |
96408a79 SA |
14075 | } |
14076 | } | |
14077 | else | |
14078 | complaint (&symfile_complaints, | |
216f72a1 | 14079 | _("DW_TAG_call_site DW_AT_call_target is neither " |
96408a79 | 14080 | "block nor reference, for DIE 0x%x [in module %s]"), |
9c541725 | 14081 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14082 | |
14083 | call_site->per_cu = cu->per_cu; | |
14084 | ||
14085 | for (child_die = die->child; | |
14086 | child_die && child_die->tag; | |
14087 | child_die = sibling_die (child_die)) | |
14088 | { | |
96408a79 | 14089 | struct call_site_parameter *parameter; |
1788b2d3 | 14090 | struct attribute *loc, *origin; |
96408a79 | 14091 | |
216f72a1 JK |
14092 | if (child_die->tag != DW_TAG_call_site_parameter |
14093 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14094 | { |
14095 | /* Already printed the complaint above. */ | |
14096 | continue; | |
14097 | } | |
14098 | ||
14099 | gdb_assert (call_site->parameter_count < nparams); | |
14100 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14101 | ||
1788b2d3 JK |
14102 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14103 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14104 | register is contained in DW_AT_call_value. */ |
96408a79 | 14105 | |
24c5c679 | 14106 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14107 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14108 | if (origin == NULL) | |
14109 | { | |
14110 | /* This was a pre-DWARF-5 GNU extension alias | |
14111 | for DW_AT_call_parameter. */ | |
14112 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14113 | } | |
7771576e | 14114 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14115 | { |
1788b2d3 | 14116 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14117 | |
14118 | sect_offset sect_off | |
14119 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14120 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14121 | { |
14122 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14123 | binding can be done only inside one CU. Such referenced DIE | |
14124 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
14125 | complaint (&symfile_complaints, | |
216f72a1 JK |
14126 | _("DW_AT_call_parameter offset is not in CU for " |
14127 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
14128 | to_underlying (child_die->sect_off), |
14129 | objfile_name (objfile)); | |
d76b7dbc JK |
14130 | continue; |
14131 | } | |
9c541725 PA |
14132 | parameter->u.param_cu_off |
14133 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14134 | } |
14135 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
14136 | { |
14137 | complaint (&symfile_complaints, | |
14138 | _("No DW_FORM_block* DW_AT_location for " | |
216f72a1 | 14139 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), |
9c541725 | 14140 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
96408a79 SA |
14141 | continue; |
14142 | } | |
24c5c679 | 14143 | else |
96408a79 | 14144 | { |
24c5c679 JK |
14145 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14146 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14147 | if (parameter->u.dwarf_reg != -1) | |
14148 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14149 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14150 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14151 | ¶meter->u.fb_offset)) | |
14152 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14153 | else | |
14154 | { | |
14155 | complaint (&symfile_complaints, | |
14156 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
14157 | "for DW_FORM_block* DW_AT_location is supported for " | |
216f72a1 | 14158 | "DW_TAG_call_site child DIE 0x%x " |
24c5c679 | 14159 | "[in module %s]"), |
9c541725 PA |
14160 | to_underlying (child_die->sect_off), |
14161 | objfile_name (objfile)); | |
24c5c679 JK |
14162 | continue; |
14163 | } | |
96408a79 SA |
14164 | } |
14165 | ||
216f72a1 JK |
14166 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14167 | if (attr == NULL) | |
14168 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14169 | if (!attr_form_is_block (attr)) |
14170 | { | |
14171 | complaint (&symfile_complaints, | |
216f72a1 JK |
14172 | _("No DW_FORM_block* DW_AT_call_value for " |
14173 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
14174 | to_underlying (child_die->sect_off), |
14175 | objfile_name (objfile)); | |
96408a79 SA |
14176 | continue; |
14177 | } | |
14178 | parameter->value = DW_BLOCK (attr)->data; | |
14179 | parameter->value_size = DW_BLOCK (attr)->size; | |
14180 | ||
14181 | /* Parameters are not pre-cleared by memset above. */ | |
14182 | parameter->data_value = NULL; | |
14183 | parameter->data_value_size = 0; | |
14184 | call_site->parameter_count++; | |
14185 | ||
216f72a1 JK |
14186 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14187 | if (attr == NULL) | |
14188 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14189 | if (attr) |
14190 | { | |
14191 | if (!attr_form_is_block (attr)) | |
14192 | complaint (&symfile_complaints, | |
216f72a1 JK |
14193 | _("No DW_FORM_block* DW_AT_call_data_value for " |
14194 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
14195 | to_underlying (child_die->sect_off), |
14196 | objfile_name (objfile)); | |
96408a79 SA |
14197 | else |
14198 | { | |
14199 | parameter->data_value = DW_BLOCK (attr)->data; | |
14200 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14201 | } | |
14202 | } | |
14203 | } | |
14204 | } | |
14205 | ||
71a3c369 TT |
14206 | /* Helper function for read_variable. If DIE represents a virtual |
14207 | table, then return the type of the concrete object that is | |
14208 | associated with the virtual table. Otherwise, return NULL. */ | |
14209 | ||
14210 | static struct type * | |
14211 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14212 | { | |
14213 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14214 | if (attr == NULL) | |
14215 | return NULL; | |
14216 | ||
14217 | /* Find the type DIE. */ | |
14218 | struct die_info *type_die = NULL; | |
14219 | struct dwarf2_cu *type_cu = cu; | |
14220 | ||
14221 | if (attr_form_is_ref (attr)) | |
14222 | type_die = follow_die_ref (die, attr, &type_cu); | |
14223 | if (type_die == NULL) | |
14224 | return NULL; | |
14225 | ||
14226 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14227 | return NULL; | |
14228 | return die_containing_type (type_die, type_cu); | |
14229 | } | |
14230 | ||
14231 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14232 | ||
14233 | static void | |
14234 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14235 | { | |
14236 | struct rust_vtable_symbol *storage = NULL; | |
14237 | ||
14238 | if (cu->language == language_rust) | |
14239 | { | |
14240 | struct type *containing_type = rust_containing_type (die, cu); | |
14241 | ||
14242 | if (containing_type != NULL) | |
14243 | { | |
14244 | struct objfile *objfile = cu->objfile; | |
14245 | ||
14246 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14247 | struct rust_vtable_symbol); | |
14248 | initialize_objfile_symbol (storage); | |
14249 | storage->concrete_type = containing_type; | |
cf724bc9 | 14250 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14251 | } |
14252 | } | |
14253 | ||
14254 | new_symbol_full (die, NULL, cu, storage); | |
14255 | } | |
14256 | ||
43988095 JK |
14257 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14258 | reading .debug_rnglists. | |
14259 | Callback's type should be: | |
14260 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14261 | Return true if the attributes are present and valid, otherwise, | |
14262 | return false. */ | |
14263 | ||
14264 | template <typename Callback> | |
14265 | static bool | |
14266 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14267 | Callback &&callback) | |
14268 | { | |
14269 | struct objfile *objfile = cu->objfile; | |
43988095 | 14270 | bfd *obfd = objfile->obfd; |
43988095 JK |
14271 | /* Base address selection entry. */ |
14272 | CORE_ADDR base; | |
14273 | int found_base; | |
43988095 | 14274 | const gdb_byte *buffer; |
43988095 JK |
14275 | CORE_ADDR baseaddr; |
14276 | bool overflow = false; | |
14277 | ||
14278 | found_base = cu->base_known; | |
14279 | base = cu->base_address; | |
14280 | ||
14281 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14282 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14283 | { | |
14284 | complaint (&symfile_complaints, | |
14285 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14286 | offset); | |
14287 | return false; | |
14288 | } | |
14289 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14290 | ||
14291 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14292 | ||
14293 | while (1) | |
14294 | { | |
7814882a JK |
14295 | /* Initialize it due to a false compiler warning. */ |
14296 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14297 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14298 | + dwarf2_per_objfile->rnglists.size); | |
14299 | unsigned int bytes_read; | |
14300 | ||
14301 | if (buffer == buf_end) | |
14302 | { | |
14303 | overflow = true; | |
14304 | break; | |
14305 | } | |
14306 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14307 | switch (rlet) | |
14308 | { | |
14309 | case DW_RLE_end_of_list: | |
14310 | break; | |
14311 | case DW_RLE_base_address: | |
14312 | if (buffer + cu->header.addr_size > buf_end) | |
14313 | { | |
14314 | overflow = true; | |
14315 | break; | |
14316 | } | |
14317 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14318 | found_base = 1; | |
14319 | buffer += bytes_read; | |
14320 | break; | |
14321 | case DW_RLE_start_length: | |
14322 | if (buffer + cu->header.addr_size > buf_end) | |
14323 | { | |
14324 | overflow = true; | |
14325 | break; | |
14326 | } | |
14327 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14328 | buffer += bytes_read; | |
14329 | range_end = (range_beginning | |
14330 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14331 | buffer += bytes_read; | |
14332 | if (buffer > buf_end) | |
14333 | { | |
14334 | overflow = true; | |
14335 | break; | |
14336 | } | |
14337 | break; | |
14338 | case DW_RLE_offset_pair: | |
14339 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14340 | buffer += bytes_read; | |
14341 | if (buffer > buf_end) | |
14342 | { | |
14343 | overflow = true; | |
14344 | break; | |
14345 | } | |
14346 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14347 | buffer += bytes_read; | |
14348 | if (buffer > buf_end) | |
14349 | { | |
14350 | overflow = true; | |
14351 | break; | |
14352 | } | |
14353 | break; | |
14354 | case DW_RLE_start_end: | |
14355 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14356 | { | |
14357 | overflow = true; | |
14358 | break; | |
14359 | } | |
14360 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14361 | buffer += bytes_read; | |
14362 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14363 | buffer += bytes_read; | |
14364 | break; | |
14365 | default: | |
14366 | complaint (&symfile_complaints, | |
14367 | _("Invalid .debug_rnglists data (no base address)")); | |
14368 | return false; | |
14369 | } | |
14370 | if (rlet == DW_RLE_end_of_list || overflow) | |
14371 | break; | |
14372 | if (rlet == DW_RLE_base_address) | |
14373 | continue; | |
14374 | ||
14375 | if (!found_base) | |
14376 | { | |
14377 | /* We have no valid base address for the ranges | |
14378 | data. */ | |
14379 | complaint (&symfile_complaints, | |
14380 | _("Invalid .debug_rnglists data (no base address)")); | |
14381 | return false; | |
14382 | } | |
14383 | ||
14384 | if (range_beginning > range_end) | |
14385 | { | |
14386 | /* Inverted range entries are invalid. */ | |
14387 | complaint (&symfile_complaints, | |
14388 | _("Invalid .debug_rnglists data (inverted range)")); | |
14389 | return false; | |
14390 | } | |
14391 | ||
14392 | /* Empty range entries have no effect. */ | |
14393 | if (range_beginning == range_end) | |
14394 | continue; | |
14395 | ||
14396 | range_beginning += base; | |
14397 | range_end += base; | |
14398 | ||
14399 | /* A not-uncommon case of bad debug info. | |
14400 | Don't pollute the addrmap with bad data. */ | |
14401 | if (range_beginning + baseaddr == 0 | |
14402 | && !dwarf2_per_objfile->has_section_at_zero) | |
14403 | { | |
14404 | complaint (&symfile_complaints, | |
14405 | _(".debug_rnglists entry has start address of zero" | |
14406 | " [in module %s]"), objfile_name (objfile)); | |
14407 | continue; | |
14408 | } | |
14409 | ||
14410 | callback (range_beginning, range_end); | |
14411 | } | |
14412 | ||
14413 | if (overflow) | |
14414 | { | |
14415 | complaint (&symfile_complaints, | |
14416 | _("Offset %d is not terminated " | |
14417 | "for DW_AT_ranges attribute"), | |
14418 | offset); | |
14419 | return false; | |
14420 | } | |
14421 | ||
14422 | return true; | |
14423 | } | |
14424 | ||
14425 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14426 | Callback's type should be: | |
14427 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14428 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14429 | |
43988095 | 14430 | template <typename Callback> |
43039443 | 14431 | static int |
5f46c5a5 | 14432 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14433 | Callback &&callback) |
43039443 JK |
14434 | { |
14435 | struct objfile *objfile = cu->objfile; | |
14436 | struct comp_unit_head *cu_header = &cu->header; | |
14437 | bfd *obfd = objfile->obfd; | |
14438 | unsigned int addr_size = cu_header->addr_size; | |
14439 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14440 | /* Base address selection entry. */ | |
14441 | CORE_ADDR base; | |
14442 | int found_base; | |
14443 | unsigned int dummy; | |
d521ce57 | 14444 | const gdb_byte *buffer; |
ff013f42 | 14445 | CORE_ADDR baseaddr; |
43039443 | 14446 | |
43988095 JK |
14447 | if (cu_header->version >= 5) |
14448 | return dwarf2_rnglists_process (offset, cu, callback); | |
14449 | ||
d00adf39 DE |
14450 | found_base = cu->base_known; |
14451 | base = cu->base_address; | |
43039443 | 14452 | |
be391dca | 14453 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14454 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
14455 | { |
14456 | complaint (&symfile_complaints, | |
14457 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14458 | offset); | |
14459 | return 0; | |
14460 | } | |
dce234bc | 14461 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14462 | |
e7030f15 | 14463 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14464 | |
43039443 JK |
14465 | while (1) |
14466 | { | |
14467 | CORE_ADDR range_beginning, range_end; | |
14468 | ||
14469 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14470 | buffer += addr_size; | |
14471 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14472 | buffer += addr_size; | |
14473 | offset += 2 * addr_size; | |
14474 | ||
14475 | /* An end of list marker is a pair of zero addresses. */ | |
14476 | if (range_beginning == 0 && range_end == 0) | |
14477 | /* Found the end of list entry. */ | |
14478 | break; | |
14479 | ||
14480 | /* Each base address selection entry is a pair of 2 values. | |
14481 | The first is the largest possible address, the second is | |
14482 | the base address. Check for a base address here. */ | |
14483 | if ((range_beginning & mask) == mask) | |
14484 | { | |
28d2bfb9 AB |
14485 | /* If we found the largest possible address, then we already |
14486 | have the base address in range_end. */ | |
14487 | base = range_end; | |
43039443 JK |
14488 | found_base = 1; |
14489 | continue; | |
14490 | } | |
14491 | ||
14492 | if (!found_base) | |
14493 | { | |
14494 | /* We have no valid base address for the ranges | |
14495 | data. */ | |
14496 | complaint (&symfile_complaints, | |
14497 | _("Invalid .debug_ranges data (no base address)")); | |
14498 | return 0; | |
14499 | } | |
14500 | ||
9277c30c UW |
14501 | if (range_beginning > range_end) |
14502 | { | |
14503 | /* Inverted range entries are invalid. */ | |
14504 | complaint (&symfile_complaints, | |
14505 | _("Invalid .debug_ranges data (inverted range)")); | |
14506 | return 0; | |
14507 | } | |
14508 | ||
14509 | /* Empty range entries have no effect. */ | |
14510 | if (range_beginning == range_end) | |
14511 | continue; | |
14512 | ||
43039443 JK |
14513 | range_beginning += base; |
14514 | range_end += base; | |
14515 | ||
01093045 DE |
14516 | /* A not-uncommon case of bad debug info. |
14517 | Don't pollute the addrmap with bad data. */ | |
14518 | if (range_beginning + baseaddr == 0 | |
14519 | && !dwarf2_per_objfile->has_section_at_zero) | |
14520 | { | |
14521 | complaint (&symfile_complaints, | |
14522 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 14523 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14524 | continue; |
14525 | } | |
14526 | ||
5f46c5a5 JK |
14527 | callback (range_beginning, range_end); |
14528 | } | |
14529 | ||
14530 | return 1; | |
14531 | } | |
14532 | ||
14533 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14534 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14535 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14536 | ||
14537 | static int | |
14538 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14539 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14540 | struct partial_symtab *ranges_pst) | |
14541 | { | |
14542 | struct objfile *objfile = cu->objfile; | |
14543 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14544 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14545 | SECT_OFF_TEXT (objfile)); | |
14546 | int low_set = 0; | |
14547 | CORE_ADDR low = 0; | |
14548 | CORE_ADDR high = 0; | |
14549 | int retval; | |
14550 | ||
14551 | retval = dwarf2_ranges_process (offset, cu, | |
14552 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14553 | { | |
9277c30c | 14554 | if (ranges_pst != NULL) |
3e29f34a MR |
14555 | { |
14556 | CORE_ADDR lowpc; | |
14557 | CORE_ADDR highpc; | |
14558 | ||
14559 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14560 | range_beginning + baseaddr); | |
14561 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14562 | range_end + baseaddr); | |
14563 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
14564 | ranges_pst); | |
14565 | } | |
ff013f42 | 14566 | |
43039443 JK |
14567 | /* FIXME: This is recording everything as a low-high |
14568 | segment of consecutive addresses. We should have a | |
14569 | data structure for discontiguous block ranges | |
14570 | instead. */ | |
14571 | if (! low_set) | |
14572 | { | |
14573 | low = range_beginning; | |
14574 | high = range_end; | |
14575 | low_set = 1; | |
14576 | } | |
14577 | else | |
14578 | { | |
14579 | if (range_beginning < low) | |
14580 | low = range_beginning; | |
14581 | if (range_end > high) | |
14582 | high = range_end; | |
14583 | } | |
5f46c5a5 JK |
14584 | }); |
14585 | if (!retval) | |
14586 | return 0; | |
43039443 JK |
14587 | |
14588 | if (! low_set) | |
14589 | /* If the first entry is an end-of-list marker, the range | |
14590 | describes an empty scope, i.e. no instructions. */ | |
14591 | return 0; | |
14592 | ||
14593 | if (low_return) | |
14594 | *low_return = low; | |
14595 | if (high_return) | |
14596 | *high_return = high; | |
14597 | return 1; | |
14598 | } | |
14599 | ||
3a2b436a JK |
14600 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14601 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14602 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14603 | |
3a2b436a | 14604 | static enum pc_bounds_kind |
af34e669 | 14605 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14606 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14607 | struct partial_symtab *pst) | |
c906108c SS |
14608 | { |
14609 | struct attribute *attr; | |
91da1414 | 14610 | struct attribute *attr_high; |
af34e669 DJ |
14611 | CORE_ADDR low = 0; |
14612 | CORE_ADDR high = 0; | |
e385593e | 14613 | enum pc_bounds_kind ret; |
c906108c | 14614 | |
91da1414 MW |
14615 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14616 | if (attr_high) | |
af34e669 | 14617 | { |
e142c38c | 14618 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14619 | if (attr) |
91da1414 | 14620 | { |
31aa7e4e JB |
14621 | low = attr_value_as_address (attr); |
14622 | high = attr_value_as_address (attr_high); | |
14623 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14624 | high += low; | |
91da1414 | 14625 | } |
af34e669 DJ |
14626 | else |
14627 | /* Found high w/o low attribute. */ | |
e385593e | 14628 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14629 | |
14630 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14631 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14632 | } |
c906108c | 14633 | else |
af34e669 | 14634 | { |
e142c38c | 14635 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14636 | if (attr != NULL) |
14637 | { | |
ab435259 DE |
14638 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14639 | We take advantage of the fact that DW_AT_ranges does not appear | |
14640 | in DW_TAG_compile_unit of DWO files. */ | |
14641 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14642 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14643 | + (need_ranges_base | |
14644 | ? cu->ranges_base | |
14645 | : 0)); | |
2e3cf129 | 14646 | |
af34e669 | 14647 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14648 | .debug_ranges section. */ |
2e3cf129 | 14649 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14650 | return PC_BOUNDS_INVALID; |
43039443 | 14651 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14652 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14653 | } |
e385593e JK |
14654 | else |
14655 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14656 | } |
c906108c | 14657 | |
9373cf26 JK |
14658 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
14659 | if (high <= low) | |
e385593e | 14660 | return PC_BOUNDS_INVALID; |
c906108c SS |
14661 | |
14662 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14663 | eliminate duplicate copies of functions and vtables and such. | |
14664 | The linker will arbitrarily choose one and discard the others. | |
14665 | The AT_*_pc values for such functions refer to local labels in | |
14666 | these sections. If the section from that file was discarded, the | |
14667 | labels are not in the output, so the relocs get a value of 0. | |
14668 | If this is a discarded function, mark the pc bounds as invalid, | |
14669 | so that GDB will ignore it. */ | |
72dca2f5 | 14670 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14671 | return PC_BOUNDS_INVALID; |
c906108c SS |
14672 | |
14673 | *lowpc = low; | |
96408a79 SA |
14674 | if (highpc) |
14675 | *highpc = high; | |
af34e669 | 14676 | return ret; |
c906108c SS |
14677 | } |
14678 | ||
b084d499 JB |
14679 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14680 | its low and high PC addresses. Do nothing if these addresses could not | |
14681 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14682 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14683 | ||
14684 | static void | |
14685 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14686 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14687 | struct dwarf2_cu *cu) | |
14688 | { | |
14689 | CORE_ADDR low, high; | |
14690 | struct die_info *child = die->child; | |
14691 | ||
e385593e | 14692 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14693 | { |
325fac50 PA |
14694 | *lowpc = std::min (*lowpc, low); |
14695 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14696 | } |
14697 | ||
14698 | /* If the language does not allow nested subprograms (either inside | |
14699 | subprograms or lexical blocks), we're done. */ | |
14700 | if (cu->language != language_ada) | |
14701 | return; | |
6e70227d | 14702 | |
b084d499 JB |
14703 | /* Check all the children of the given DIE. If it contains nested |
14704 | subprograms, then check their pc bounds. Likewise, we need to | |
14705 | check lexical blocks as well, as they may also contain subprogram | |
14706 | definitions. */ | |
14707 | while (child && child->tag) | |
14708 | { | |
14709 | if (child->tag == DW_TAG_subprogram | |
14710 | || child->tag == DW_TAG_lexical_block) | |
14711 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14712 | child = sibling_die (child); | |
14713 | } | |
14714 | } | |
14715 | ||
fae299cd DC |
14716 | /* Get the low and high pc's represented by the scope DIE, and store |
14717 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14718 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14719 | ||
14720 | static void | |
14721 | get_scope_pc_bounds (struct die_info *die, | |
14722 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14723 | struct dwarf2_cu *cu) | |
14724 | { | |
14725 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14726 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14727 | CORE_ADDR current_low, current_high; | |
14728 | ||
3a2b436a | 14729 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14730 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14731 | { |
14732 | best_low = current_low; | |
14733 | best_high = current_high; | |
14734 | } | |
14735 | else | |
14736 | { | |
14737 | struct die_info *child = die->child; | |
14738 | ||
14739 | while (child && child->tag) | |
14740 | { | |
14741 | switch (child->tag) { | |
14742 | case DW_TAG_subprogram: | |
b084d499 | 14743 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14744 | break; |
14745 | case DW_TAG_namespace: | |
f55ee35c | 14746 | case DW_TAG_module: |
fae299cd DC |
14747 | /* FIXME: carlton/2004-01-16: Should we do this for |
14748 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14749 | that current GCC's always emit the DIEs corresponding | |
14750 | to definitions of methods of classes as children of a | |
14751 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14752 | the DIEs giving the declarations, which could be | |
14753 | anywhere). But I don't see any reason why the | |
14754 | standards says that they have to be there. */ | |
14755 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14756 | ||
14757 | if (current_low != ((CORE_ADDR) -1)) | |
14758 | { | |
325fac50 PA |
14759 | best_low = std::min (best_low, current_low); |
14760 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14761 | } |
14762 | break; | |
14763 | default: | |
0963b4bd | 14764 | /* Ignore. */ |
fae299cd DC |
14765 | break; |
14766 | } | |
14767 | ||
14768 | child = sibling_die (child); | |
14769 | } | |
14770 | } | |
14771 | ||
14772 | *lowpc = best_low; | |
14773 | *highpc = best_high; | |
14774 | } | |
14775 | ||
801e3a5b JB |
14776 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14777 | in DIE. */ | |
380bca97 | 14778 | |
801e3a5b JB |
14779 | static void |
14780 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14781 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14782 | { | |
bb5ed363 | 14783 | struct objfile *objfile = cu->objfile; |
3e29f34a | 14784 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14785 | struct attribute *attr; |
91da1414 | 14786 | struct attribute *attr_high; |
801e3a5b | 14787 | |
91da1414 MW |
14788 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14789 | if (attr_high) | |
801e3a5b | 14790 | { |
801e3a5b JB |
14791 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14792 | if (attr) | |
14793 | { | |
31aa7e4e JB |
14794 | CORE_ADDR low = attr_value_as_address (attr); |
14795 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14796 | ||
14797 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14798 | high += low; | |
9a619af0 | 14799 | |
3e29f34a MR |
14800 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14801 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
14802 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
14803 | } |
14804 | } | |
14805 | ||
14806 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14807 | if (attr) | |
14808 | { | |
ab435259 DE |
14809 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14810 | We take advantage of the fact that DW_AT_ranges does not appear | |
14811 | in DW_TAG_compile_unit of DWO files. */ | |
14812 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14813 | |
14814 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14815 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14816 | unsigned long offset = (DW_UNSND (attr) |
14817 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 14818 | const gdb_byte *buffer; |
801e3a5b JB |
14819 | |
14820 | /* For some target architectures, but not others, the | |
14821 | read_address function sign-extends the addresses it returns. | |
14822 | To recognize base address selection entries, we need a | |
14823 | mask. */ | |
14824 | unsigned int addr_size = cu->header.addr_size; | |
14825 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14826 | ||
14827 | /* The base address, to which the next pair is relative. Note | |
14828 | that this 'base' is a DWARF concept: most entries in a range | |
14829 | list are relative, to reduce the number of relocs against the | |
14830 | debugging information. This is separate from this function's | |
14831 | 'baseaddr' argument, which GDB uses to relocate debugging | |
14832 | information from a shared library based on the address at | |
14833 | which the library was loaded. */ | |
d00adf39 DE |
14834 | CORE_ADDR base = cu->base_address; |
14835 | int base_known = cu->base_known; | |
801e3a5b | 14836 | |
5f46c5a5 JK |
14837 | dwarf2_ranges_process (offset, cu, |
14838 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14839 | { | |
58fdfd2c JK |
14840 | start += baseaddr; |
14841 | end += baseaddr; | |
5f46c5a5 JK |
14842 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14843 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
14844 | record_block_range (block, start, end - 1); | |
14845 | }); | |
801e3a5b JB |
14846 | } |
14847 | } | |
14848 | ||
685b1105 JK |
14849 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14850 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14851 | |
685b1105 JK |
14852 | static void |
14853 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14854 | { |
38360086 | 14855 | int major, minor; |
60d5a603 JK |
14856 | |
14857 | if (cu->producer == NULL) | |
14858 | { | |
14859 | /* For unknown compilers expect their behavior is DWARF version | |
14860 | compliant. | |
14861 | ||
14862 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14863 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14864 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14865 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14866 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14867 | } |
b1ffba5a | 14868 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14869 | { |
38360086 MW |
14870 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14871 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14872 | } |
5230b05a WT |
14873 | else if (producer_is_icc (cu->producer, &major, &minor)) |
14874 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
14875 | else |
14876 | { | |
14877 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14878 | compliant. */ | |
60d5a603 JK |
14879 | } |
14880 | ||
ba919b58 | 14881 | cu->checked_producer = 1; |
685b1105 | 14882 | } |
ba919b58 | 14883 | |
685b1105 JK |
14884 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14885 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14886 | during 4.6.0 experimental. */ | |
14887 | ||
14888 | static int | |
14889 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
14890 | { | |
14891 | if (!cu->checked_producer) | |
14892 | check_producer (cu); | |
14893 | ||
14894 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14895 | } |
14896 | ||
14897 | /* Return the default accessibility type if it is not overriden by | |
14898 | DW_AT_accessibility. */ | |
14899 | ||
14900 | static enum dwarf_access_attribute | |
14901 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14902 | { | |
14903 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14904 | { | |
14905 | /* The default DWARF 2 accessibility for members is public, the default | |
14906 | accessibility for inheritance is private. */ | |
14907 | ||
14908 | if (die->tag != DW_TAG_inheritance) | |
14909 | return DW_ACCESS_public; | |
14910 | else | |
14911 | return DW_ACCESS_private; | |
14912 | } | |
14913 | else | |
14914 | { | |
14915 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14916 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14917 | depends on the container kind. */ | |
14918 | ||
14919 | if (die->parent->tag == DW_TAG_class_type) | |
14920 | return DW_ACCESS_private; | |
14921 | else | |
14922 | return DW_ACCESS_public; | |
14923 | } | |
14924 | } | |
14925 | ||
74ac6d43 TT |
14926 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14927 | offset. If the attribute was not found return 0, otherwise return | |
14928 | 1. If it was found but could not properly be handled, set *OFFSET | |
14929 | to 0. */ | |
14930 | ||
14931 | static int | |
14932 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14933 | LONGEST *offset) | |
14934 | { | |
14935 | struct attribute *attr; | |
14936 | ||
14937 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14938 | if (attr != NULL) | |
14939 | { | |
14940 | *offset = 0; | |
14941 | ||
14942 | /* Note that we do not check for a section offset first here. | |
14943 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14944 | so if we see it, we can assume that a constant form is really | |
14945 | a constant and not a section offset. */ | |
14946 | if (attr_form_is_constant (attr)) | |
14947 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14948 | else if (attr_form_is_section_offset (attr)) | |
14949 | dwarf2_complex_location_expr_complaint (); | |
14950 | else if (attr_form_is_block (attr)) | |
14951 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14952 | else | |
14953 | dwarf2_complex_location_expr_complaint (); | |
14954 | ||
14955 | return 1; | |
14956 | } | |
14957 | ||
14958 | return 0; | |
14959 | } | |
14960 | ||
c906108c SS |
14961 | /* Add an aggregate field to the field list. */ |
14962 | ||
14963 | static void | |
107d2387 | 14964 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14965 | struct dwarf2_cu *cu) |
6e70227d | 14966 | { |
e7c27a73 | 14967 | struct objfile *objfile = cu->objfile; |
5e2b427d | 14968 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14969 | struct nextfield *new_field; |
14970 | struct attribute *attr; | |
14971 | struct field *fp; | |
15d034d0 | 14972 | const char *fieldname = ""; |
c906108c SS |
14973 | |
14974 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 14975 | new_field = XNEW (struct nextfield); |
b8c9b27d | 14976 | make_cleanup (xfree, new_field); |
c906108c | 14977 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
14978 | |
14979 | if (die->tag == DW_TAG_inheritance) | |
14980 | { | |
14981 | new_field->next = fip->baseclasses; | |
14982 | fip->baseclasses = new_field; | |
14983 | } | |
14984 | else | |
14985 | { | |
14986 | new_field->next = fip->fields; | |
14987 | fip->fields = new_field; | |
14988 | } | |
c906108c SS |
14989 | fip->nfields++; |
14990 | ||
e142c38c | 14991 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
14992 | if (attr) |
14993 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
14994 | else |
14995 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14996 | if (new_field->accessibility != DW_ACCESS_public) |
14997 | fip->non_public_fields = 1; | |
60d5a603 | 14998 | |
e142c38c | 14999 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15000 | if (attr) |
15001 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15002 | else |
15003 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15004 | |
15005 | fp = &new_field->field; | |
a9a9bd0f | 15006 | |
e142c38c | 15007 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15008 | { |
74ac6d43 TT |
15009 | LONGEST offset; |
15010 | ||
a9a9bd0f | 15011 | /* Data member other than a C++ static data member. */ |
6e70227d | 15012 | |
c906108c | 15013 | /* Get type of field. */ |
e7c27a73 | 15014 | fp->type = die_type (die, cu); |
c906108c | 15015 | |
d6a843b5 | 15016 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15017 | |
c906108c | 15018 | /* Get bit size of field (zero if none). */ |
e142c38c | 15019 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15020 | if (attr) |
15021 | { | |
15022 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15023 | } | |
15024 | else | |
15025 | { | |
15026 | FIELD_BITSIZE (*fp) = 0; | |
15027 | } | |
15028 | ||
15029 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15030 | if (handle_data_member_location (die, cu, &offset)) |
15031 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15032 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15033 | if (attr) |
15034 | { | |
5e2b427d | 15035 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15036 | { |
15037 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15038 | additional bit offset from the MSB of the containing |
15039 | anonymous object to the MSB of the field. We don't | |
15040 | have to do anything special since we don't need to | |
15041 | know the size of the anonymous object. */ | |
f41f5e61 | 15042 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15043 | } |
15044 | else | |
15045 | { | |
15046 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15047 | MSB of the anonymous object, subtract off the number of |
15048 | bits from the MSB of the field to the MSB of the | |
15049 | object, and then subtract off the number of bits of | |
15050 | the field itself. The result is the bit offset of | |
15051 | the LSB of the field. */ | |
c906108c SS |
15052 | int anonymous_size; |
15053 | int bit_offset = DW_UNSND (attr); | |
15054 | ||
e142c38c | 15055 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15056 | if (attr) |
15057 | { | |
15058 | /* The size of the anonymous object containing | |
15059 | the bit field is explicit, so use the | |
15060 | indicated size (in bytes). */ | |
15061 | anonymous_size = DW_UNSND (attr); | |
15062 | } | |
15063 | else | |
15064 | { | |
15065 | /* The size of the anonymous object containing | |
15066 | the bit field must be inferred from the type | |
15067 | attribute of the data member containing the | |
15068 | bit field. */ | |
15069 | anonymous_size = TYPE_LENGTH (fp->type); | |
15070 | } | |
f41f5e61 PA |
15071 | SET_FIELD_BITPOS (*fp, |
15072 | (FIELD_BITPOS (*fp) | |
15073 | + anonymous_size * bits_per_byte | |
15074 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15075 | } |
15076 | } | |
da5b30da AA |
15077 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15078 | if (attr != NULL) | |
15079 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15080 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15081 | |
15082 | /* Get name of field. */ | |
39cbfefa DJ |
15083 | fieldname = dwarf2_name (die, cu); |
15084 | if (fieldname == NULL) | |
15085 | fieldname = ""; | |
d8151005 DJ |
15086 | |
15087 | /* The name is already allocated along with this objfile, so we don't | |
15088 | need to duplicate it for the type. */ | |
15089 | fp->name = fieldname; | |
c906108c SS |
15090 | |
15091 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15092 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15093 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15094 | { |
d48cc9dd | 15095 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15096 | new_field->accessibility = DW_ACCESS_private; |
15097 | fip->non_public_fields = 1; | |
15098 | } | |
15099 | } | |
a9a9bd0f | 15100 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15101 | { |
a9a9bd0f DC |
15102 | /* C++ static member. */ |
15103 | ||
15104 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15105 | is a declaration, but all versions of G++ as of this writing | |
15106 | (so through at least 3.2.1) incorrectly generate | |
15107 | DW_TAG_variable tags. */ | |
6e70227d | 15108 | |
ff355380 | 15109 | const char *physname; |
c906108c | 15110 | |
a9a9bd0f | 15111 | /* Get name of field. */ |
39cbfefa DJ |
15112 | fieldname = dwarf2_name (die, cu); |
15113 | if (fieldname == NULL) | |
c906108c SS |
15114 | return; |
15115 | ||
254e6b9e | 15116 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15117 | if (attr |
15118 | /* Only create a symbol if this is an external value. | |
15119 | new_symbol checks this and puts the value in the global symbol | |
15120 | table, which we want. If it is not external, new_symbol | |
15121 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15122 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15123 | { |
15124 | /* A static const member, not much different than an enum as far as | |
15125 | we're concerned, except that we can support more types. */ | |
15126 | new_symbol (die, NULL, cu); | |
15127 | } | |
15128 | ||
2df3850c | 15129 | /* Get physical name. */ |
ff355380 | 15130 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15131 | |
d8151005 DJ |
15132 | /* The name is already allocated along with this objfile, so we don't |
15133 | need to duplicate it for the type. */ | |
15134 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15135 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15136 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15137 | } |
15138 | else if (die->tag == DW_TAG_inheritance) | |
15139 | { | |
74ac6d43 | 15140 | LONGEST offset; |
d4b96c9a | 15141 | |
74ac6d43 TT |
15142 | /* C++ base class field. */ |
15143 | if (handle_data_member_location (die, cu, &offset)) | |
15144 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15145 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15146 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
15147 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
15148 | fip->nbaseclasses++; | |
15149 | } | |
15150 | } | |
15151 | ||
883fd55a KS |
15152 | /* Can the type given by DIE define another type? */ |
15153 | ||
15154 | static bool | |
15155 | type_can_define_types (const struct die_info *die) | |
15156 | { | |
15157 | switch (die->tag) | |
15158 | { | |
15159 | case DW_TAG_typedef: | |
15160 | case DW_TAG_class_type: | |
15161 | case DW_TAG_structure_type: | |
15162 | case DW_TAG_union_type: | |
15163 | case DW_TAG_enumeration_type: | |
15164 | return true; | |
15165 | ||
15166 | default: | |
15167 | return false; | |
15168 | } | |
15169 | } | |
15170 | ||
15171 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15172 | |
15173 | static void | |
883fd55a KS |
15174 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15175 | struct dwarf2_cu *cu) | |
6e70227d | 15176 | { |
883fd55a KS |
15177 | struct decl_field_list *new_field; |
15178 | struct decl_field *fp; | |
98751a41 JK |
15179 | |
15180 | /* Allocate a new field list entry and link it in. */ | |
883fd55a | 15181 | new_field = XCNEW (struct decl_field_list); |
98751a41 JK |
15182 | make_cleanup (xfree, new_field); |
15183 | ||
883fd55a | 15184 | gdb_assert (type_can_define_types (die)); |
98751a41 JK |
15185 | |
15186 | fp = &new_field->field; | |
15187 | ||
883fd55a | 15188 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
98751a41 | 15189 | fp->name = dwarf2_name (die, cu); |
98751a41 JK |
15190 | fp->type = read_type_die (die, cu); |
15191 | ||
c191a687 KS |
15192 | /* Save accessibility. */ |
15193 | enum dwarf_access_attribute accessibility; | |
15194 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15195 | if (attr != NULL) | |
15196 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15197 | else | |
15198 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15199 | switch (accessibility) | |
15200 | { | |
15201 | case DW_ACCESS_public: | |
15202 | /* The assumed value if neither private nor protected. */ | |
15203 | break; | |
15204 | case DW_ACCESS_private: | |
15205 | fp->is_private = 1; | |
15206 | break; | |
15207 | case DW_ACCESS_protected: | |
15208 | fp->is_protected = 1; | |
15209 | break; | |
15210 | default: | |
37534686 KS |
15211 | complaint (&symfile_complaints, |
15212 | _("Unhandled DW_AT_accessibility value (%x)"), accessibility); | |
c191a687 KS |
15213 | } |
15214 | ||
883fd55a KS |
15215 | if (die->tag == DW_TAG_typedef) |
15216 | { | |
15217 | new_field->next = fip->typedef_field_list; | |
15218 | fip->typedef_field_list = new_field; | |
15219 | fip->typedef_field_list_count++; | |
15220 | } | |
15221 | else | |
15222 | { | |
15223 | new_field->next = fip->nested_types_list; | |
15224 | fip->nested_types_list = new_field; | |
15225 | fip->nested_types_list_count++; | |
15226 | } | |
98751a41 JK |
15227 | } |
15228 | ||
c906108c SS |
15229 | /* Create the vector of fields, and attach it to the type. */ |
15230 | ||
15231 | static void | |
fba45db2 | 15232 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15233 | struct dwarf2_cu *cu) |
c906108c SS |
15234 | { |
15235 | int nfields = fip->nfields; | |
15236 | ||
15237 | /* Record the field count, allocate space for the array of fields, | |
15238 | and create blank accessibility bitfields if necessary. */ | |
15239 | TYPE_NFIELDS (type) = nfields; | |
15240 | TYPE_FIELDS (type) = (struct field *) | |
15241 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
15242 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
15243 | ||
b4ba55a1 | 15244 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15245 | { |
15246 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15247 | ||
15248 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15249 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15250 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15251 | ||
15252 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15253 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15254 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15255 | ||
774b6a14 TT |
15256 | TYPE_FIELD_IGNORE_BITS (type) = |
15257 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15258 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15259 | } |
15260 | ||
15261 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15262 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 15263 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
15264 | { |
15265 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 15266 | unsigned char *pointer; |
c906108c SS |
15267 | |
15268 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15269 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15270 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
c906108c SS |
15271 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
15272 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
15273 | } | |
15274 | ||
3e43a32a MS |
15275 | /* Copy the saved-up fields into the field vector. Start from the head of |
15276 | the list, adding to the tail of the field array, so that they end up in | |
15277 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
15278 | while (nfields-- > 0) |
15279 | { | |
7d0ccb61 DJ |
15280 | struct nextfield *fieldp; |
15281 | ||
15282 | if (fip->fields) | |
15283 | { | |
15284 | fieldp = fip->fields; | |
15285 | fip->fields = fieldp->next; | |
15286 | } | |
15287 | else | |
15288 | { | |
15289 | fieldp = fip->baseclasses; | |
15290 | fip->baseclasses = fieldp->next; | |
15291 | } | |
15292 | ||
15293 | TYPE_FIELD (type, nfields) = fieldp->field; | |
15294 | switch (fieldp->accessibility) | |
c906108c | 15295 | { |
c5aa993b | 15296 | case DW_ACCESS_private: |
b4ba55a1 JB |
15297 | if (cu->language != language_ada) |
15298 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 15299 | break; |
c906108c | 15300 | |
c5aa993b | 15301 | case DW_ACCESS_protected: |
b4ba55a1 JB |
15302 | if (cu->language != language_ada) |
15303 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 15304 | break; |
c906108c | 15305 | |
c5aa993b JM |
15306 | case DW_ACCESS_public: |
15307 | break; | |
c906108c | 15308 | |
c5aa993b JM |
15309 | default: |
15310 | /* Unknown accessibility. Complain and treat it as public. */ | |
15311 | { | |
e2e0b3e5 | 15312 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 15313 | fieldp->accessibility); |
c5aa993b JM |
15314 | } |
15315 | break; | |
c906108c SS |
15316 | } |
15317 | if (nfields < fip->nbaseclasses) | |
15318 | { | |
7d0ccb61 | 15319 | switch (fieldp->virtuality) |
c906108c | 15320 | { |
c5aa993b JM |
15321 | case DW_VIRTUALITY_virtual: |
15322 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15323 | if (cu->language == language_ada) |
a73c6dcd | 15324 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
15325 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
15326 | break; | |
c906108c SS |
15327 | } |
15328 | } | |
c906108c SS |
15329 | } |
15330 | } | |
15331 | ||
7d27a96d TT |
15332 | /* Return true if this member function is a constructor, false |
15333 | otherwise. */ | |
15334 | ||
15335 | static int | |
15336 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15337 | { | |
15338 | const char *fieldname; | |
fe978cb0 | 15339 | const char *type_name; |
7d27a96d TT |
15340 | int len; |
15341 | ||
15342 | if (die->parent == NULL) | |
15343 | return 0; | |
15344 | ||
15345 | if (die->parent->tag != DW_TAG_structure_type | |
15346 | && die->parent->tag != DW_TAG_union_type | |
15347 | && die->parent->tag != DW_TAG_class_type) | |
15348 | return 0; | |
15349 | ||
15350 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15351 | type_name = dwarf2_name (die->parent, cu); |
15352 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15353 | return 0; |
15354 | ||
15355 | len = strlen (fieldname); | |
fe978cb0 PA |
15356 | return (strncmp (fieldname, type_name, len) == 0 |
15357 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15358 | } |
15359 | ||
c906108c SS |
15360 | /* Add a member function to the proper fieldlist. */ |
15361 | ||
15362 | static void | |
107d2387 | 15363 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15364 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15365 | { |
e7c27a73 | 15366 | struct objfile *objfile = cu->objfile; |
c906108c SS |
15367 | struct attribute *attr; |
15368 | struct fnfieldlist *flp; | |
15369 | int i; | |
15370 | struct fn_field *fnp; | |
15d034d0 | 15371 | const char *fieldname; |
c906108c | 15372 | struct nextfnfield *new_fnfield; |
f792889a | 15373 | struct type *this_type; |
60d5a603 | 15374 | enum dwarf_access_attribute accessibility; |
c906108c | 15375 | |
b4ba55a1 | 15376 | if (cu->language == language_ada) |
a73c6dcd | 15377 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15378 | |
2df3850c | 15379 | /* Get name of member function. */ |
39cbfefa DJ |
15380 | fieldname = dwarf2_name (die, cu); |
15381 | if (fieldname == NULL) | |
2df3850c | 15382 | return; |
c906108c | 15383 | |
c906108c SS |
15384 | /* Look up member function name in fieldlist. */ |
15385 | for (i = 0; i < fip->nfnfields; i++) | |
15386 | { | |
27bfe10e | 15387 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
15388 | break; |
15389 | } | |
15390 | ||
15391 | /* Create new list element if necessary. */ | |
15392 | if (i < fip->nfnfields) | |
15393 | flp = &fip->fnfieldlists[i]; | |
15394 | else | |
15395 | { | |
15396 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
15397 | { | |
15398 | fip->fnfieldlists = (struct fnfieldlist *) | |
15399 | xrealloc (fip->fnfieldlists, | |
15400 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 15401 | * sizeof (struct fnfieldlist)); |
c906108c | 15402 | if (fip->nfnfields == 0) |
c13c43fd | 15403 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
15404 | } |
15405 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
15406 | flp->name = fieldname; | |
15407 | flp->length = 0; | |
15408 | flp->head = NULL; | |
3da10d80 | 15409 | i = fip->nfnfields++; |
c906108c SS |
15410 | } |
15411 | ||
15412 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 15413 | entry. */ |
8d749320 | 15414 | new_fnfield = XNEW (struct nextfnfield); |
b8c9b27d | 15415 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
15416 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
15417 | new_fnfield->next = flp->head; | |
15418 | flp->head = new_fnfield; | |
15419 | flp->length++; | |
15420 | ||
15421 | /* Fill in the member function field info. */ | |
15422 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
15423 | |
15424 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15425 | if (cu->language == language_cplus) |
3da10d80 KS |
15426 | { |
15427 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
15428 | die, cu); | |
15429 | } | |
15430 | else | |
15431 | { | |
1d06ead6 | 15432 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15433 | fnp->physname = physname ? physname : ""; |
15434 | } | |
15435 | ||
c906108c | 15436 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15437 | this_type = read_type_die (die, cu); |
15438 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15439 | { |
f792889a | 15440 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15441 | |
f792889a | 15442 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15443 | of the method itself (TYPE_CODE_METHOD). */ |
15444 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15445 | TYPE_TARGET_TYPE (this_type), |
15446 | TYPE_FIELDS (this_type), | |
15447 | TYPE_NFIELDS (this_type), | |
15448 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15449 | |
15450 | /* Handle static member functions. | |
c5aa993b | 15451 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15452 | member functions. G++ helps GDB by marking the first |
15453 | parameter for non-static member functions (which is the this | |
15454 | pointer) as artificial. We obtain this information from | |
15455 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15456 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15457 | fnp->voffset = VOFFSET_STATIC; |
15458 | } | |
15459 | else | |
e2e0b3e5 | 15460 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 15461 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15462 | |
15463 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15464 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15465 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15466 | |
3e43a32a MS |
15467 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15468 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15469 | |
15470 | /* Get accessibility. */ | |
e142c38c | 15471 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15472 | if (attr) |
aead7601 | 15473 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15474 | else |
15475 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15476 | switch (accessibility) | |
c906108c | 15477 | { |
60d5a603 JK |
15478 | case DW_ACCESS_private: |
15479 | fnp->is_private = 1; | |
15480 | break; | |
15481 | case DW_ACCESS_protected: | |
15482 | fnp->is_protected = 1; | |
15483 | break; | |
c906108c SS |
15484 | } |
15485 | ||
b02dede2 | 15486 | /* Check for artificial methods. */ |
e142c38c | 15487 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15488 | if (attr && DW_UNSND (attr) != 0) |
15489 | fnp->is_artificial = 1; | |
15490 | ||
7d27a96d TT |
15491 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15492 | ||
0d564a31 | 15493 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15494 | function. For older versions of GCC, this is an offset in the |
15495 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15496 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15497 | to the object address. */ |
15498 | ||
e142c38c | 15499 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15500 | if (attr) |
8e19ed76 | 15501 | { |
aec5aa8b | 15502 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15503 | { |
aec5aa8b TT |
15504 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15505 | { | |
15506 | /* Old-style GCC. */ | |
15507 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15508 | } | |
15509 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15510 | || (DW_BLOCK (attr)->size > 1 | |
15511 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15512 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15513 | { | |
aec5aa8b TT |
15514 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15515 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15516 | dwarf2_complex_location_expr_complaint (); | |
15517 | else | |
15518 | fnp->voffset /= cu->header.addr_size; | |
15519 | fnp->voffset += 2; | |
15520 | } | |
15521 | else | |
15522 | dwarf2_complex_location_expr_complaint (); | |
15523 | ||
15524 | if (!fnp->fcontext) | |
7e993ebf KS |
15525 | { |
15526 | /* If there is no `this' field and no DW_AT_containing_type, | |
15527 | we cannot actually find a base class context for the | |
15528 | vtable! */ | |
15529 | if (TYPE_NFIELDS (this_type) == 0 | |
15530 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15531 | { | |
15532 | complaint (&symfile_complaints, | |
15533 | _("cannot determine context for virtual member " | |
15534 | "function \"%s\" (offset %d)"), | |
9c541725 | 15535 | fieldname, to_underlying (die->sect_off)); |
7e993ebf KS |
15536 | } |
15537 | else | |
15538 | { | |
15539 | fnp->fcontext | |
15540 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15541 | } | |
15542 | } | |
aec5aa8b | 15543 | } |
3690dd37 | 15544 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15545 | { |
4d3c2250 | 15546 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15547 | } |
15548 | else | |
15549 | { | |
4d3c2250 KB |
15550 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15551 | fieldname); | |
8e19ed76 | 15552 | } |
0d564a31 | 15553 | } |
d48cc9dd DJ |
15554 | else |
15555 | { | |
15556 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15557 | if (attr && DW_UNSND (attr)) | |
15558 | { | |
15559 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
15560 | complaint (&symfile_complaints, | |
3e43a32a MS |
15561 | _("Member function \"%s\" (offset %d) is virtual " |
15562 | "but the vtable offset is not specified"), | |
9c541725 | 15563 | fieldname, to_underlying (die->sect_off)); |
9655fd1a | 15564 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15565 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15566 | } | |
15567 | } | |
c906108c SS |
15568 | } |
15569 | ||
15570 | /* Create the vector of member function fields, and attach it to the type. */ | |
15571 | ||
15572 | static void | |
fba45db2 | 15573 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15574 | struct dwarf2_cu *cu) |
c906108c SS |
15575 | { |
15576 | struct fnfieldlist *flp; | |
c906108c SS |
15577 | int i; |
15578 | ||
b4ba55a1 | 15579 | if (cu->language == language_ada) |
a73c6dcd | 15580 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15581 | |
c906108c SS |
15582 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15583 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
15584 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
15585 | ||
15586 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
15587 | { | |
15588 | struct nextfnfield *nfp = flp->head; | |
15589 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
15590 | int k; | |
15591 | ||
15592 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
15593 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
15594 | fn_flp->fn_fields = (struct fn_field *) | |
15595 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
15596 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 15597 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
15598 | } |
15599 | ||
15600 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
15601 | } |
15602 | ||
1168df01 JB |
15603 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15604 | language, zero otherwise. */ | |
15605 | static int | |
15606 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15607 | { | |
15608 | static const char vptr[] = "_vptr"; | |
15609 | ||
9c37b5ae TT |
15610 | /* Look for the C++ form of the vtable. */ |
15611 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15612 | return 1; |
15613 | ||
15614 | return 0; | |
15615 | } | |
15616 | ||
c0dd20ea | 15617 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15618 | functions, with the ABI-specified layout. If TYPE describes |
15619 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15620 | |
15621 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15622 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15623 | |
0b92b5bb TT |
15624 | static void |
15625 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15626 | { |
09e2d7c7 | 15627 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15628 | |
15629 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15630 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15631 | return; | |
c0dd20ea DJ |
15632 | |
15633 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15634 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15635 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15636 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15637 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15638 | return; | |
c0dd20ea DJ |
15639 | |
15640 | /* Find the type of the method. */ | |
0b92b5bb | 15641 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15642 | if (pfn_type == NULL |
15643 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15644 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15645 | return; |
c0dd20ea DJ |
15646 | |
15647 | /* Look for the "this" argument. */ | |
15648 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15649 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15650 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15651 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15652 | return; |
c0dd20ea | 15653 | |
09e2d7c7 | 15654 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15655 | new_type = alloc_type (objfile); |
09e2d7c7 | 15656 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15657 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15658 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15659 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15660 | } |
1168df01 | 15661 | |
685b1105 | 15662 | |
c906108c | 15663 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15664 | (definition) to create a type for the structure or union. Fill in |
15665 | the type's name and general properties; the members will not be | |
83655187 DE |
15666 | processed until process_structure_scope. A symbol table entry for |
15667 | the type will also not be done until process_structure_scope (assuming | |
15668 | the type has a name). | |
c906108c | 15669 | |
c767944b DJ |
15670 | NOTE: we need to call these functions regardless of whether or not the |
15671 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15672 | structure or union. This gets the type entered into our set of |
83655187 | 15673 | user defined types. */ |
c906108c | 15674 | |
f792889a | 15675 | static struct type * |
134d01f1 | 15676 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15677 | { |
e7c27a73 | 15678 | struct objfile *objfile = cu->objfile; |
c906108c SS |
15679 | struct type *type; |
15680 | struct attribute *attr; | |
15d034d0 | 15681 | const char *name; |
c906108c | 15682 | |
348e048f DE |
15683 | /* If the definition of this type lives in .debug_types, read that type. |
15684 | Don't follow DW_AT_specification though, that will take us back up | |
15685 | the chain and we want to go down. */ | |
45e58e77 | 15686 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15687 | if (attr) |
15688 | { | |
ac9ec31b | 15689 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15690 | |
ac9ec31b | 15691 | /* The type's CU may not be the same as CU. |
02142a6c | 15692 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15693 | return set_die_type (die, type, cu); |
15694 | } | |
15695 | ||
c0dd20ea | 15696 | type = alloc_type (objfile); |
c906108c | 15697 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15698 | |
39cbfefa DJ |
15699 | name = dwarf2_name (die, cu); |
15700 | if (name != NULL) | |
c906108c | 15701 | { |
987504bb | 15702 | if (cu->language == language_cplus |
c44af4eb TT |
15703 | || cu->language == language_d |
15704 | || cu->language == language_rust) | |
63d06c5c | 15705 | { |
15d034d0 | 15706 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15707 | |
15708 | /* dwarf2_full_name might have already finished building the DIE's | |
15709 | type. If so, there is no need to continue. */ | |
15710 | if (get_die_type (die, cu) != NULL) | |
15711 | return get_die_type (die, cu); | |
15712 | ||
15713 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
15714 | if (die->tag == DW_TAG_structure_type |
15715 | || die->tag == DW_TAG_class_type) | |
15716 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
15717 | } |
15718 | else | |
15719 | { | |
d8151005 DJ |
15720 | /* The name is already allocated along with this objfile, so |
15721 | we don't need to duplicate it for the type. */ | |
7d455152 | 15722 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
15723 | if (die->tag == DW_TAG_class_type) |
15724 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 15725 | } |
c906108c SS |
15726 | } |
15727 | ||
15728 | if (die->tag == DW_TAG_structure_type) | |
15729 | { | |
15730 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15731 | } | |
15732 | else if (die->tag == DW_TAG_union_type) | |
15733 | { | |
15734 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15735 | } | |
15736 | else | |
15737 | { | |
4753d33b | 15738 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15739 | } |
15740 | ||
0cc2414c TT |
15741 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15742 | TYPE_DECLARED_CLASS (type) = 1; | |
15743 | ||
e142c38c | 15744 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15745 | if (attr) |
15746 | { | |
155bfbd3 JB |
15747 | if (attr_form_is_constant (attr)) |
15748 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15749 | else | |
15750 | { | |
15751 | /* For the moment, dynamic type sizes are not supported | |
15752 | by GDB's struct type. The actual size is determined | |
15753 | on-demand when resolving the type of a given object, | |
15754 | so set the type's length to zero for now. Otherwise, | |
15755 | we record an expression as the length, and that expression | |
15756 | could lead to a very large value, which could eventually | |
15757 | lead to us trying to allocate that much memory when creating | |
15758 | a value of that type. */ | |
15759 | TYPE_LENGTH (type) = 0; | |
15760 | } | |
c906108c SS |
15761 | } |
15762 | else | |
15763 | { | |
15764 | TYPE_LENGTH (type) = 0; | |
15765 | } | |
15766 | ||
5230b05a | 15767 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15768 | { |
5230b05a WT |
15769 | /* ICC<14 does not output the required DW_AT_declaration on |
15770 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15771 | TYPE_STUB (type) = 1; |
685b1105 JK |
15772 | } |
15773 | else | |
15774 | TYPE_STUB_SUPPORTED (type) = 1; | |
15775 | ||
dc718098 | 15776 | if (die_is_declaration (die, cu)) |
876cecd0 | 15777 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15778 | else if (attr == NULL && die->child == NULL |
15779 | && producer_is_realview (cu->producer)) | |
15780 | /* RealView does not output the required DW_AT_declaration | |
15781 | on incomplete types. */ | |
15782 | TYPE_STUB (type) = 1; | |
dc718098 | 15783 | |
c906108c SS |
15784 | /* We need to add the type field to the die immediately so we don't |
15785 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15786 | type within the structure itself. */ |
1c379e20 | 15787 | set_die_type (die, type, cu); |
c906108c | 15788 | |
7e314c57 JK |
15789 | /* set_die_type should be already done. */ |
15790 | set_descriptive_type (type, die, cu); | |
15791 | ||
c767944b DJ |
15792 | return type; |
15793 | } | |
15794 | ||
15795 | /* Finish creating a structure or union type, including filling in | |
15796 | its members and creating a symbol for it. */ | |
15797 | ||
15798 | static void | |
15799 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15800 | { | |
15801 | struct objfile *objfile = cu->objfile; | |
ca040673 | 15802 | struct die_info *child_die; |
c767944b DJ |
15803 | struct type *type; |
15804 | ||
15805 | type = get_die_type (die, cu); | |
15806 | if (type == NULL) | |
15807 | type = read_structure_type (die, cu); | |
15808 | ||
e142c38c | 15809 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15810 | { |
15811 | struct field_info fi; | |
2f4732b0 | 15812 | std::vector<struct symbol *> template_args; |
c767944b | 15813 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
15814 | |
15815 | memset (&fi, 0, sizeof (struct field_info)); | |
15816 | ||
639d11d3 | 15817 | child_die = die->child; |
c906108c SS |
15818 | |
15819 | while (child_die && child_die->tag) | |
15820 | { | |
a9a9bd0f DC |
15821 | if (child_die->tag == DW_TAG_member |
15822 | || child_die->tag == DW_TAG_variable) | |
c906108c | 15823 | { |
a9a9bd0f DC |
15824 | /* NOTE: carlton/2002-11-05: A C++ static data member |
15825 | should be a DW_TAG_member that is a declaration, but | |
15826 | all versions of G++ as of this writing (so through at | |
15827 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15828 | tags for them instead. */ | |
e7c27a73 | 15829 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 15830 | } |
8713b1b1 | 15831 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 15832 | { |
e98c9e7c TT |
15833 | /* Rust doesn't have member functions in the C++ sense. |
15834 | However, it does emit ordinary functions as children | |
15835 | of a struct DIE. */ | |
15836 | if (cu->language == language_rust) | |
15837 | read_func_scope (child_die, cu); | |
15838 | else | |
15839 | { | |
15840 | /* C++ member function. */ | |
15841 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
15842 | } | |
c906108c SS |
15843 | } |
15844 | else if (child_die->tag == DW_TAG_inheritance) | |
15845 | { | |
15846 | /* C++ base class field. */ | |
e7c27a73 | 15847 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 15848 | } |
883fd55a KS |
15849 | else if (type_can_define_types (child_die)) |
15850 | dwarf2_add_type_defn (&fi, child_die, cu); | |
34eaf542 TT |
15851 | else if (child_die->tag == DW_TAG_template_type_param |
15852 | || child_die->tag == DW_TAG_template_value_param) | |
15853 | { | |
15854 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15855 | ||
f1078f66 | 15856 | if (arg != NULL) |
2f4732b0 | 15857 | template_args.push_back (arg); |
34eaf542 TT |
15858 | } |
15859 | ||
c906108c SS |
15860 | child_die = sibling_die (child_die); |
15861 | } | |
15862 | ||
34eaf542 | 15863 | /* Attach template arguments to type. */ |
2f4732b0 | 15864 | if (!template_args.empty ()) |
34eaf542 TT |
15865 | { |
15866 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2f4732b0 | 15867 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15868 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15869 | = XOBNEWVEC (&objfile->objfile_obstack, |
15870 | struct symbol *, | |
15871 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15872 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15873 | template_args.data (), |
34eaf542 TT |
15874 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15875 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15876 | } |
15877 | ||
c906108c SS |
15878 | /* Attach fields and member functions to the type. */ |
15879 | if (fi.nfields) | |
e7c27a73 | 15880 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
15881 | if (fi.nfnfields) |
15882 | { | |
e7c27a73 | 15883 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15884 | |
c5aa993b | 15885 | /* Get the type which refers to the base class (possibly this |
c906108c | 15886 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15887 | class from the DW_AT_containing_type attribute. This use of |
15888 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15889 | |
e142c38c | 15890 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15891 | { |
e7c27a73 | 15892 | struct type *t = die_containing_type (die, cu); |
c906108c | 15893 | |
ae6ae975 | 15894 | set_type_vptr_basetype (type, t); |
c906108c SS |
15895 | if (type == t) |
15896 | { | |
c906108c SS |
15897 | int i; |
15898 | ||
15899 | /* Our own class provides vtbl ptr. */ | |
15900 | for (i = TYPE_NFIELDS (t) - 1; | |
15901 | i >= TYPE_N_BASECLASSES (t); | |
15902 | --i) | |
15903 | { | |
0d5cff50 | 15904 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15905 | |
1168df01 | 15906 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15907 | { |
ae6ae975 | 15908 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15909 | break; |
15910 | } | |
15911 | } | |
15912 | ||
15913 | /* Complain if virtual function table field not found. */ | |
15914 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 15915 | complaint (&symfile_complaints, |
3e43a32a MS |
15916 | _("virtual function table pointer " |
15917 | "not found when defining class '%s'"), | |
4d3c2250 KB |
15918 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
15919 | ""); | |
c906108c SS |
15920 | } |
15921 | else | |
15922 | { | |
ae6ae975 | 15923 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15924 | } |
15925 | } | |
f6235d4c | 15926 | else if (cu->producer |
61012eef | 15927 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15928 | { |
15929 | /* The IBM XLC compiler does not provide direct indication | |
15930 | of the containing type, but the vtable pointer is | |
15931 | always named __vfp. */ | |
15932 | ||
15933 | int i; | |
15934 | ||
15935 | for (i = TYPE_NFIELDS (type) - 1; | |
15936 | i >= TYPE_N_BASECLASSES (type); | |
15937 | --i) | |
15938 | { | |
15939 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15940 | { | |
ae6ae975 DE |
15941 | set_type_vptr_fieldno (type, i); |
15942 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15943 | break; |
15944 | } | |
15945 | } | |
15946 | } | |
c906108c | 15947 | } |
98751a41 JK |
15948 | |
15949 | /* Copy fi.typedef_field_list linked list elements content into the | |
15950 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
15951 | if (fi.typedef_field_list) | |
15952 | { | |
15953 | int i = fi.typedef_field_list_count; | |
15954 | ||
a0d7a4ff | 15955 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15956 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15957 | = ((struct decl_field *) |
224c3ddb | 15958 | TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i)); |
98751a41 JK |
15959 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; |
15960 | ||
15961 | /* Reverse the list order to keep the debug info elements order. */ | |
15962 | while (--i >= 0) | |
15963 | { | |
883fd55a | 15964 | struct decl_field *dest, *src; |
6e70227d | 15965 | |
98751a41 JK |
15966 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
15967 | src = &fi.typedef_field_list->field; | |
15968 | fi.typedef_field_list = fi.typedef_field_list->next; | |
15969 | *dest = *src; | |
15970 | } | |
15971 | } | |
c767944b | 15972 | |
883fd55a KS |
15973 | /* Copy fi.nested_types_list linked list elements content into the |
15974 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
15975 | if (fi.nested_types_list != NULL && cu->language != language_ada) | |
15976 | { | |
15977 | int i = fi.nested_types_list_count; | |
15978 | ||
15979 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15980 | TYPE_NESTED_TYPES_ARRAY (type) | |
15981 | = ((struct decl_field *) | |
15982 | TYPE_ALLOC (type, sizeof (struct decl_field) * i)); | |
15983 | TYPE_NESTED_TYPES_COUNT (type) = i; | |
15984 | ||
15985 | /* Reverse the list order to keep the debug info elements order. */ | |
15986 | while (--i >= 0) | |
15987 | { | |
15988 | struct decl_field *dest, *src; | |
15989 | ||
15990 | dest = &TYPE_NESTED_TYPES_FIELD (type, i); | |
15991 | src = &fi.nested_types_list->field; | |
15992 | fi.nested_types_list = fi.nested_types_list->next; | |
15993 | *dest = *src; | |
15994 | } | |
15995 | } | |
15996 | ||
c767944b | 15997 | do_cleanups (back_to); |
c906108c | 15998 | } |
63d06c5c | 15999 | |
bb5ed363 | 16000 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 16001 | |
90aeadfc DC |
16002 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16003 | snapshots) has been known to create a die giving a declaration | |
16004 | for a class that has, as a child, a die giving a definition for a | |
16005 | nested class. So we have to process our children even if the | |
16006 | current die is a declaration. Normally, of course, a declaration | |
16007 | won't have any children at all. */ | |
134d01f1 | 16008 | |
ca040673 DE |
16009 | child_die = die->child; |
16010 | ||
90aeadfc DC |
16011 | while (child_die != NULL && child_die->tag) |
16012 | { | |
16013 | if (child_die->tag == DW_TAG_member | |
16014 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16015 | || child_die->tag == DW_TAG_inheritance |
16016 | || child_die->tag == DW_TAG_template_value_param | |
16017 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16018 | { |
90aeadfc | 16019 | /* Do nothing. */ |
134d01f1 | 16020 | } |
90aeadfc DC |
16021 | else |
16022 | process_die (child_die, cu); | |
134d01f1 | 16023 | |
90aeadfc | 16024 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16025 | } |
16026 | ||
fa4028e9 JB |
16027 | /* Do not consider external references. According to the DWARF standard, |
16028 | these DIEs are identified by the fact that they have no byte_size | |
16029 | attribute, and a declaration attribute. */ | |
16030 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16031 | || !die_is_declaration (die, cu)) | |
c767944b | 16032 | new_symbol (die, type, cu); |
134d01f1 DJ |
16033 | } |
16034 | ||
55426c9d JB |
16035 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16036 | update TYPE using some information only available in DIE's children. */ | |
16037 | ||
16038 | static void | |
16039 | update_enumeration_type_from_children (struct die_info *die, | |
16040 | struct type *type, | |
16041 | struct dwarf2_cu *cu) | |
16042 | { | |
60f7655a | 16043 | struct die_info *child_die; |
55426c9d JB |
16044 | int unsigned_enum = 1; |
16045 | int flag_enum = 1; | |
16046 | ULONGEST mask = 0; | |
55426c9d | 16047 | |
8268c778 | 16048 | auto_obstack obstack; |
55426c9d | 16049 | |
60f7655a DE |
16050 | for (child_die = die->child; |
16051 | child_die != NULL && child_die->tag; | |
16052 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16053 | { |
16054 | struct attribute *attr; | |
16055 | LONGEST value; | |
16056 | const gdb_byte *bytes; | |
16057 | struct dwarf2_locexpr_baton *baton; | |
16058 | const char *name; | |
60f7655a | 16059 | |
55426c9d JB |
16060 | if (child_die->tag != DW_TAG_enumerator) |
16061 | continue; | |
16062 | ||
16063 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16064 | if (attr == NULL) | |
16065 | continue; | |
16066 | ||
16067 | name = dwarf2_name (child_die, cu); | |
16068 | if (name == NULL) | |
16069 | name = "<anonymous enumerator>"; | |
16070 | ||
16071 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16072 | &value, &bytes, &baton); | |
16073 | if (value < 0) | |
16074 | { | |
16075 | unsigned_enum = 0; | |
16076 | flag_enum = 0; | |
16077 | } | |
16078 | else if ((mask & value) != 0) | |
16079 | flag_enum = 0; | |
16080 | else | |
16081 | mask |= value; | |
16082 | ||
16083 | /* If we already know that the enum type is neither unsigned, nor | |
16084 | a flag type, no need to look at the rest of the enumerates. */ | |
16085 | if (!unsigned_enum && !flag_enum) | |
16086 | break; | |
55426c9d JB |
16087 | } |
16088 | ||
16089 | if (unsigned_enum) | |
16090 | TYPE_UNSIGNED (type) = 1; | |
16091 | if (flag_enum) | |
16092 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16093 | } |
16094 | ||
134d01f1 DJ |
16095 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16096 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16097 | |
f792889a | 16098 | static struct type * |
134d01f1 | 16099 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16100 | { |
e7c27a73 | 16101 | struct objfile *objfile = cu->objfile; |
c906108c | 16102 | struct type *type; |
c906108c | 16103 | struct attribute *attr; |
0114d602 | 16104 | const char *name; |
134d01f1 | 16105 | |
348e048f DE |
16106 | /* If the definition of this type lives in .debug_types, read that type. |
16107 | Don't follow DW_AT_specification though, that will take us back up | |
16108 | the chain and we want to go down. */ | |
45e58e77 | 16109 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16110 | if (attr) |
16111 | { | |
ac9ec31b | 16112 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16113 | |
ac9ec31b | 16114 | /* The type's CU may not be the same as CU. |
02142a6c | 16115 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16116 | return set_die_type (die, type, cu); |
16117 | } | |
16118 | ||
c906108c SS |
16119 | type = alloc_type (objfile); |
16120 | ||
16121 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16122 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16123 | if (name != NULL) |
7d455152 | 16124 | TYPE_TAG_NAME (type) = name; |
c906108c | 16125 | |
0626fc76 TT |
16126 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16127 | if (attr != NULL) | |
16128 | { | |
16129 | struct type *underlying_type = die_type (die, cu); | |
16130 | ||
16131 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16132 | } | |
16133 | ||
e142c38c | 16134 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16135 | if (attr) |
16136 | { | |
16137 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16138 | } | |
16139 | else | |
16140 | { | |
16141 | TYPE_LENGTH (type) = 0; | |
16142 | } | |
16143 | ||
137033e9 JB |
16144 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16145 | declared as private in the package spec, and then defined only | |
16146 | inside the package body. Such types are known as Taft Amendment | |
16147 | Types. When another package uses such a type, an incomplete DIE | |
16148 | may be generated by the compiler. */ | |
02eb380e | 16149 | if (die_is_declaration (die, cu)) |
876cecd0 | 16150 | TYPE_STUB (type) = 1; |
02eb380e | 16151 | |
0626fc76 TT |
16152 | /* Finish the creation of this type by using the enum's children. |
16153 | We must call this even when the underlying type has been provided | |
16154 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16155 | update_enumeration_type_from_children (die, type, cu); |
16156 | ||
0626fc76 TT |
16157 | /* If this type has an underlying type that is not a stub, then we |
16158 | may use its attributes. We always use the "unsigned" attribute | |
16159 | in this situation, because ordinarily we guess whether the type | |
16160 | is unsigned -- but the guess can be wrong and the underlying type | |
16161 | can tell us the reality. However, we defer to a local size | |
16162 | attribute if one exists, because this lets the compiler override | |
16163 | the underlying type if needed. */ | |
16164 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16165 | { | |
16166 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16167 | if (TYPE_LENGTH (type) == 0) | |
16168 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
16169 | } | |
16170 | ||
3d567982 TT |
16171 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16172 | ||
f792889a | 16173 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16174 | } |
16175 | ||
16176 | /* Given a pointer to a die which begins an enumeration, process all | |
16177 | the dies that define the members of the enumeration, and create the | |
16178 | symbol for the enumeration type. | |
16179 | ||
16180 | NOTE: We reverse the order of the element list. */ | |
16181 | ||
16182 | static void | |
16183 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16184 | { | |
f792889a | 16185 | struct type *this_type; |
134d01f1 | 16186 | |
f792889a DJ |
16187 | this_type = get_die_type (die, cu); |
16188 | if (this_type == NULL) | |
16189 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16190 | |
639d11d3 | 16191 | if (die->child != NULL) |
c906108c | 16192 | { |
9dc481d3 DE |
16193 | struct die_info *child_die; |
16194 | struct symbol *sym; | |
16195 | struct field *fields = NULL; | |
16196 | int num_fields = 0; | |
15d034d0 | 16197 | const char *name; |
9dc481d3 | 16198 | |
639d11d3 | 16199 | child_die = die->child; |
c906108c SS |
16200 | while (child_die && child_die->tag) |
16201 | { | |
16202 | if (child_die->tag != DW_TAG_enumerator) | |
16203 | { | |
e7c27a73 | 16204 | process_die (child_die, cu); |
c906108c SS |
16205 | } |
16206 | else | |
16207 | { | |
39cbfefa DJ |
16208 | name = dwarf2_name (child_die, cu); |
16209 | if (name) | |
c906108c | 16210 | { |
f792889a | 16211 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16212 | |
16213 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16214 | { | |
16215 | fields = (struct field *) | |
16216 | xrealloc (fields, | |
16217 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16218 | * sizeof (struct field)); |
c906108c SS |
16219 | } |
16220 | ||
3567439c | 16221 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16222 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16223 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16224 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16225 | ||
16226 | num_fields++; | |
16227 | } | |
16228 | } | |
16229 | ||
16230 | child_die = sibling_die (child_die); | |
16231 | } | |
16232 | ||
16233 | if (num_fields) | |
16234 | { | |
f792889a DJ |
16235 | TYPE_NFIELDS (this_type) = num_fields; |
16236 | TYPE_FIELDS (this_type) = (struct field *) | |
16237 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16238 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16239 | sizeof (struct field) * num_fields); |
b8c9b27d | 16240 | xfree (fields); |
c906108c | 16241 | } |
c906108c | 16242 | } |
134d01f1 | 16243 | |
6c83ed52 TT |
16244 | /* If we are reading an enum from a .debug_types unit, and the enum |
16245 | is a declaration, and the enum is not the signatured type in the | |
16246 | unit, then we do not want to add a symbol for it. Adding a | |
16247 | symbol would in some cases obscure the true definition of the | |
16248 | enum, giving users an incomplete type when the definition is | |
16249 | actually available. Note that we do not want to do this for all | |
16250 | enums which are just declarations, because C++0x allows forward | |
16251 | enum declarations. */ | |
3019eac3 | 16252 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16253 | && die_is_declaration (die, cu)) |
16254 | { | |
52dc124a | 16255 | struct signatured_type *sig_type; |
6c83ed52 | 16256 | |
c0f78cd4 | 16257 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16258 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16259 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16260 | return; |
16261 | } | |
16262 | ||
f792889a | 16263 | new_symbol (die, this_type, cu); |
c906108c SS |
16264 | } |
16265 | ||
16266 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16267 | the DIE's type field. For now, this only handles one dimensional | |
16268 | arrays. */ | |
16269 | ||
f792889a | 16270 | static struct type * |
e7c27a73 | 16271 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16272 | { |
e7c27a73 | 16273 | struct objfile *objfile = cu->objfile; |
c906108c | 16274 | struct die_info *child_die; |
7e314c57 | 16275 | struct type *type; |
c906108c | 16276 | struct type *element_type, *range_type, *index_type; |
c906108c | 16277 | struct attribute *attr; |
15d034d0 | 16278 | const char *name; |
dc53a7ad | 16279 | unsigned int bit_stride = 0; |
c906108c | 16280 | |
e7c27a73 | 16281 | element_type = die_type (die, cu); |
c906108c | 16282 | |
7e314c57 JK |
16283 | /* The die_type call above may have already set the type for this DIE. */ |
16284 | type = get_die_type (die, cu); | |
16285 | if (type) | |
16286 | return type; | |
16287 | ||
dc53a7ad JB |
16288 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16289 | if (attr != NULL) | |
16290 | bit_stride = DW_UNSND (attr) * 8; | |
16291 | ||
16292 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16293 | if (attr != NULL) | |
16294 | bit_stride = DW_UNSND (attr); | |
16295 | ||
c906108c SS |
16296 | /* Irix 6.2 native cc creates array types without children for |
16297 | arrays with unspecified length. */ | |
639d11d3 | 16298 | if (die->child == NULL) |
c906108c | 16299 | { |
46bf5051 | 16300 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16301 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
16302 | type = create_array_type_with_stride (NULL, element_type, range_type, |
16303 | bit_stride); | |
f792889a | 16304 | return set_die_type (die, type, cu); |
c906108c SS |
16305 | } |
16306 | ||
791afaa2 | 16307 | std::vector<struct type *> range_types; |
639d11d3 | 16308 | child_die = die->child; |
c906108c SS |
16309 | while (child_die && child_die->tag) |
16310 | { | |
16311 | if (child_die->tag == DW_TAG_subrange_type) | |
16312 | { | |
f792889a | 16313 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16314 | |
f792889a | 16315 | if (child_type != NULL) |
a02abb62 | 16316 | { |
0963b4bd MS |
16317 | /* The range type was succesfully read. Save it for the |
16318 | array type creation. */ | |
791afaa2 | 16319 | range_types.push_back (child_type); |
a02abb62 | 16320 | } |
c906108c SS |
16321 | } |
16322 | child_die = sibling_die (child_die); | |
16323 | } | |
16324 | ||
16325 | /* Dwarf2 dimensions are output from left to right, create the | |
16326 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16327 | |
c906108c | 16328 | type = element_type; |
7ca2d3a3 DL |
16329 | |
16330 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16331 | { | |
16332 | int i = 0; | |
9a619af0 | 16333 | |
791afaa2 | 16334 | while (i < range_types.size ()) |
dc53a7ad JB |
16335 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
16336 | bit_stride); | |
7ca2d3a3 DL |
16337 | } |
16338 | else | |
16339 | { | |
791afaa2 | 16340 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16341 | while (ndim-- > 0) |
dc53a7ad JB |
16342 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
16343 | bit_stride); | |
7ca2d3a3 | 16344 | } |
c906108c | 16345 | |
f5f8a009 EZ |
16346 | /* Understand Dwarf2 support for vector types (like they occur on |
16347 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16348 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16349 | custom vendor extension. The main difference between a regular | |
16350 | array and the vector variant is that vectors are passed by value | |
16351 | to functions. */ | |
e142c38c | 16352 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16353 | if (attr) |
ea37ba09 | 16354 | make_vector_type (type); |
f5f8a009 | 16355 | |
dbc98a8b KW |
16356 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16357 | implementation may choose to implement triple vectors using this | |
16358 | attribute. */ | |
16359 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16360 | if (attr) | |
16361 | { | |
16362 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16363 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16364 | else | |
3e43a32a MS |
16365 | complaint (&symfile_complaints, |
16366 | _("DW_AT_byte_size for array type smaller " | |
16367 | "than the total size of elements")); | |
dbc98a8b KW |
16368 | } |
16369 | ||
39cbfefa DJ |
16370 | name = dwarf2_name (die, cu); |
16371 | if (name) | |
16372 | TYPE_NAME (type) = name; | |
6e70227d | 16373 | |
0963b4bd | 16374 | /* Install the type in the die. */ |
7e314c57 JK |
16375 | set_die_type (die, type, cu); |
16376 | ||
16377 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16378 | set_descriptive_type (type, die, cu); |
16379 | ||
7e314c57 | 16380 | return type; |
c906108c SS |
16381 | } |
16382 | ||
7ca2d3a3 | 16383 | static enum dwarf_array_dim_ordering |
6e70227d | 16384 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16385 | { |
16386 | struct attribute *attr; | |
16387 | ||
16388 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16389 | ||
aead7601 SM |
16390 | if (attr) |
16391 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16392 | |
0963b4bd MS |
16393 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16394 | opposite order to the dwarf2 specification, but data is still | |
16395 | laid out as per normal fortran. | |
7ca2d3a3 | 16396 | |
0963b4bd MS |
16397 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16398 | version checking. */ | |
7ca2d3a3 | 16399 | |
905e0470 PM |
16400 | if (cu->language == language_fortran |
16401 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16402 | { |
16403 | return DW_ORD_row_major; | |
16404 | } | |
16405 | ||
6e70227d | 16406 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16407 | { |
16408 | case array_column_major: | |
16409 | return DW_ORD_col_major; | |
16410 | case array_row_major: | |
16411 | default: | |
16412 | return DW_ORD_row_major; | |
16413 | }; | |
16414 | } | |
16415 | ||
72019c9c | 16416 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16417 | the DIE's type field. */ |
72019c9c | 16418 | |
f792889a | 16419 | static struct type * |
72019c9c GM |
16420 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16421 | { | |
7e314c57 JK |
16422 | struct type *domain_type, *set_type; |
16423 | struct attribute *attr; | |
f792889a | 16424 | |
7e314c57 JK |
16425 | domain_type = die_type (die, cu); |
16426 | ||
16427 | /* The die_type call above may have already set the type for this DIE. */ | |
16428 | set_type = get_die_type (die, cu); | |
16429 | if (set_type) | |
16430 | return set_type; | |
16431 | ||
16432 | set_type = create_set_type (NULL, domain_type); | |
16433 | ||
16434 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16435 | if (attr) |
16436 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16437 | |
f792889a | 16438 | return set_die_type (die, set_type, cu); |
72019c9c | 16439 | } |
7ca2d3a3 | 16440 | |
0971de02 TT |
16441 | /* A helper for read_common_block that creates a locexpr baton. |
16442 | SYM is the symbol which we are marking as computed. | |
16443 | COMMON_DIE is the DIE for the common block. | |
16444 | COMMON_LOC is the location expression attribute for the common | |
16445 | block itself. | |
16446 | MEMBER_LOC is the location expression attribute for the particular | |
16447 | member of the common block that we are processing. | |
16448 | CU is the CU from which the above come. */ | |
16449 | ||
16450 | static void | |
16451 | mark_common_block_symbol_computed (struct symbol *sym, | |
16452 | struct die_info *common_die, | |
16453 | struct attribute *common_loc, | |
16454 | struct attribute *member_loc, | |
16455 | struct dwarf2_cu *cu) | |
16456 | { | |
16457 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16458 | struct dwarf2_locexpr_baton *baton; | |
16459 | gdb_byte *ptr; | |
16460 | unsigned int cu_off; | |
16461 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16462 | LONGEST offset = 0; | |
16463 | ||
16464 | gdb_assert (common_loc && member_loc); | |
16465 | gdb_assert (attr_form_is_block (common_loc)); | |
16466 | gdb_assert (attr_form_is_block (member_loc) | |
16467 | || attr_form_is_constant (member_loc)); | |
16468 | ||
8d749320 | 16469 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16470 | baton->per_cu = cu->per_cu; |
16471 | gdb_assert (baton->per_cu); | |
16472 | ||
16473 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16474 | ||
16475 | if (attr_form_is_constant (member_loc)) | |
16476 | { | |
16477 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16478 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16479 | } | |
16480 | else | |
16481 | baton->size += DW_BLOCK (member_loc)->size; | |
16482 | ||
224c3ddb | 16483 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16484 | baton->data = ptr; |
16485 | ||
16486 | *ptr++ = DW_OP_call4; | |
9c541725 | 16487 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16488 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16489 | ptr += 4; | |
16490 | ||
16491 | if (attr_form_is_constant (member_loc)) | |
16492 | { | |
16493 | *ptr++ = DW_OP_addr; | |
16494 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16495 | ptr += cu->header.addr_size; | |
16496 | } | |
16497 | else | |
16498 | { | |
16499 | /* We have to copy the data here, because DW_OP_call4 will only | |
16500 | use a DW_AT_location attribute. */ | |
16501 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16502 | ptr += DW_BLOCK (member_loc)->size; | |
16503 | } | |
16504 | ||
16505 | *ptr++ = DW_OP_plus; | |
16506 | gdb_assert (ptr - baton->data == baton->size); | |
16507 | ||
0971de02 | 16508 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16509 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16510 | } |
16511 | ||
4357ac6c TT |
16512 | /* Create appropriate locally-scoped variables for all the |
16513 | DW_TAG_common_block entries. Also create a struct common_block | |
16514 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16515 | is used to sepate the common blocks name namespace from regular | |
16516 | variable names. */ | |
c906108c SS |
16517 | |
16518 | static void | |
e7c27a73 | 16519 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16520 | { |
0971de02 TT |
16521 | struct attribute *attr; |
16522 | ||
16523 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16524 | if (attr) | |
16525 | { | |
16526 | /* Support the .debug_loc offsets. */ | |
16527 | if (attr_form_is_block (attr)) | |
16528 | { | |
16529 | /* Ok. */ | |
16530 | } | |
16531 | else if (attr_form_is_section_offset (attr)) | |
16532 | { | |
16533 | dwarf2_complex_location_expr_complaint (); | |
16534 | attr = NULL; | |
16535 | } | |
16536 | else | |
16537 | { | |
16538 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16539 | "common block member"); | |
16540 | attr = NULL; | |
16541 | } | |
16542 | } | |
16543 | ||
639d11d3 | 16544 | if (die->child != NULL) |
c906108c | 16545 | { |
4357ac6c TT |
16546 | struct objfile *objfile = cu->objfile; |
16547 | struct die_info *child_die; | |
16548 | size_t n_entries = 0, size; | |
16549 | struct common_block *common_block; | |
16550 | struct symbol *sym; | |
74ac6d43 | 16551 | |
4357ac6c TT |
16552 | for (child_die = die->child; |
16553 | child_die && child_die->tag; | |
16554 | child_die = sibling_die (child_die)) | |
16555 | ++n_entries; | |
16556 | ||
16557 | size = (sizeof (struct common_block) | |
16558 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16559 | common_block |
16560 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16561 | size); | |
4357ac6c TT |
16562 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16563 | common_block->n_entries = 0; | |
16564 | ||
16565 | for (child_die = die->child; | |
16566 | child_die && child_die->tag; | |
16567 | child_die = sibling_die (child_die)) | |
16568 | { | |
16569 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16570 | symbol scope. */ | |
e7c27a73 | 16571 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16572 | if (sym != NULL) |
16573 | { | |
16574 | struct attribute *member_loc; | |
16575 | ||
16576 | common_block->contents[common_block->n_entries++] = sym; | |
16577 | ||
16578 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16579 | cu); | |
16580 | if (member_loc) | |
16581 | { | |
16582 | /* GDB has handled this for a long time, but it is | |
16583 | not specified by DWARF. It seems to have been | |
16584 | emitted by gfortran at least as recently as: | |
16585 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
16586 | complaint (&symfile_complaints, | |
16587 | _("Variable in common block has " | |
16588 | "DW_AT_data_member_location " | |
16589 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 16590 | to_underlying (child_die->sect_off), |
4262abfb | 16591 | objfile_name (cu->objfile)); |
0971de02 TT |
16592 | |
16593 | if (attr_form_is_section_offset (member_loc)) | |
16594 | dwarf2_complex_location_expr_complaint (); | |
16595 | else if (attr_form_is_constant (member_loc) | |
16596 | || attr_form_is_block (member_loc)) | |
16597 | { | |
16598 | if (attr) | |
16599 | mark_common_block_symbol_computed (sym, die, attr, | |
16600 | member_loc, cu); | |
16601 | } | |
16602 | else | |
16603 | dwarf2_complex_location_expr_complaint (); | |
16604 | } | |
16605 | } | |
c906108c | 16606 | } |
4357ac6c TT |
16607 | |
16608 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16609 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16610 | } |
16611 | } | |
16612 | ||
0114d602 | 16613 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16614 | |
0114d602 DJ |
16615 | static struct type * |
16616 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16617 | { |
e7c27a73 | 16618 | struct objfile *objfile = cu->objfile; |
0114d602 | 16619 | const char *previous_prefix, *name; |
9219021c | 16620 | int is_anonymous; |
0114d602 DJ |
16621 | struct type *type; |
16622 | ||
16623 | /* For extensions, reuse the type of the original namespace. */ | |
16624 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16625 | { | |
16626 | struct die_info *ext_die; | |
16627 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16628 | |
0114d602 DJ |
16629 | ext_die = dwarf2_extension (die, &ext_cu); |
16630 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16631 | |
16632 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16633 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16634 | return set_die_type (die, type, cu); |
16635 | } | |
9219021c | 16636 | |
e142c38c | 16637 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16638 | |
16639 | /* Now build the name of the current namespace. */ | |
16640 | ||
0114d602 DJ |
16641 | previous_prefix = determine_prefix (die, cu); |
16642 | if (previous_prefix[0] != '\0') | |
16643 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16644 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16645 | |
16646 | /* Create the type. */ | |
19f392bc | 16647 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
16648 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
16649 | ||
60531b24 | 16650 | return set_die_type (die, type, cu); |
0114d602 DJ |
16651 | } |
16652 | ||
22cee43f | 16653 | /* Read a namespace scope. */ |
0114d602 DJ |
16654 | |
16655 | static void | |
16656 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16657 | { | |
16658 | struct objfile *objfile = cu->objfile; | |
0114d602 | 16659 | int is_anonymous; |
9219021c | 16660 | |
5c4e30ca DC |
16661 | /* Add a symbol associated to this if we haven't seen the namespace |
16662 | before. Also, add a using directive if it's an anonymous | |
16663 | namespace. */ | |
9219021c | 16664 | |
f2f0e013 | 16665 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16666 | { |
16667 | struct type *type; | |
16668 | ||
0114d602 | 16669 | type = read_type_die (die, cu); |
e7c27a73 | 16670 | new_symbol (die, type, cu); |
5c4e30ca | 16671 | |
e8e80198 | 16672 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16673 | if (is_anonymous) |
0114d602 DJ |
16674 | { |
16675 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16676 | |
eb1e02fd | 16677 | std::vector<const char *> excludes; |
22cee43f PMR |
16678 | add_using_directive (using_directives (cu->language), |
16679 | previous_prefix, TYPE_NAME (type), NULL, | |
eb1e02fd | 16680 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16681 | } |
5c4e30ca | 16682 | } |
9219021c | 16683 | |
639d11d3 | 16684 | if (die->child != NULL) |
d9fa45fe | 16685 | { |
639d11d3 | 16686 | struct die_info *child_die = die->child; |
6e70227d | 16687 | |
d9fa45fe DC |
16688 | while (child_die && child_die->tag) |
16689 | { | |
e7c27a73 | 16690 | process_die (child_die, cu); |
d9fa45fe DC |
16691 | child_die = sibling_die (child_die); |
16692 | } | |
16693 | } | |
38d518c9 EZ |
16694 | } |
16695 | ||
f55ee35c JK |
16696 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16697 | imported module. Still we need that type as local Fortran "use ... only" | |
16698 | declaration imports depend on the created type in determine_prefix. */ | |
16699 | ||
16700 | static struct type * | |
16701 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16702 | { | |
16703 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 16704 | const char *module_name; |
f55ee35c JK |
16705 | struct type *type; |
16706 | ||
16707 | module_name = dwarf2_name (die, cu); | |
16708 | if (!module_name) | |
3e43a32a MS |
16709 | complaint (&symfile_complaints, |
16710 | _("DW_TAG_module has no name, offset 0x%x"), | |
9c541725 | 16711 | to_underlying (die->sect_off)); |
19f392bc | 16712 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
16713 | |
16714 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
16715 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
16716 | ||
16717 | return set_die_type (die, type, cu); | |
16718 | } | |
16719 | ||
5d7cb8df JK |
16720 | /* Read a Fortran module. */ |
16721 | ||
16722 | static void | |
16723 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16724 | { | |
16725 | struct die_info *child_die = die->child; | |
530e8392 KB |
16726 | struct type *type; |
16727 | ||
16728 | type = read_type_die (die, cu); | |
16729 | new_symbol (die, type, cu); | |
5d7cb8df | 16730 | |
5d7cb8df JK |
16731 | while (child_die && child_die->tag) |
16732 | { | |
16733 | process_die (child_die, cu); | |
16734 | child_die = sibling_die (child_die); | |
16735 | } | |
16736 | } | |
16737 | ||
38d518c9 EZ |
16738 | /* Return the name of the namespace represented by DIE. Set |
16739 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16740 | namespace. */ | |
16741 | ||
16742 | static const char * | |
e142c38c | 16743 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16744 | { |
16745 | struct die_info *current_die; | |
16746 | const char *name = NULL; | |
16747 | ||
16748 | /* Loop through the extensions until we find a name. */ | |
16749 | ||
16750 | for (current_die = die; | |
16751 | current_die != NULL; | |
f2f0e013 | 16752 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16753 | { |
96553a0c DE |
16754 | /* We don't use dwarf2_name here so that we can detect the absence |
16755 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16756 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16757 | |
38d518c9 EZ |
16758 | if (name != NULL) |
16759 | break; | |
16760 | } | |
16761 | ||
16762 | /* Is it an anonymous namespace? */ | |
16763 | ||
16764 | *is_anonymous = (name == NULL); | |
16765 | if (*is_anonymous) | |
2b1dbab0 | 16766 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16767 | |
16768 | return name; | |
d9fa45fe DC |
16769 | } |
16770 | ||
c906108c SS |
16771 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16772 | the user defined type vector. */ | |
16773 | ||
f792889a | 16774 | static struct type * |
e7c27a73 | 16775 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16776 | { |
5e2b427d | 16777 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 16778 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16779 | struct type *type; |
8b2dbe47 KB |
16780 | struct attribute *attr_byte_size; |
16781 | struct attribute *attr_address_class; | |
16782 | int byte_size, addr_class; | |
7e314c57 JK |
16783 | struct type *target_type; |
16784 | ||
16785 | target_type = die_type (die, cu); | |
c906108c | 16786 | |
7e314c57 JK |
16787 | /* The die_type call above may have already set the type for this DIE. */ |
16788 | type = get_die_type (die, cu); | |
16789 | if (type) | |
16790 | return type; | |
16791 | ||
16792 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16793 | |
e142c38c | 16794 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16795 | if (attr_byte_size) |
16796 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16797 | else |
8b2dbe47 KB |
16798 | byte_size = cu_header->addr_size; |
16799 | ||
e142c38c | 16800 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16801 | if (attr_address_class) |
16802 | addr_class = DW_UNSND (attr_address_class); | |
16803 | else | |
16804 | addr_class = DW_ADDR_none; | |
16805 | ||
16806 | /* If the pointer size or address class is different than the | |
16807 | default, create a type variant marked as such and set the | |
16808 | length accordingly. */ | |
16809 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 16810 | { |
5e2b427d | 16811 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16812 | { |
16813 | int type_flags; | |
16814 | ||
849957d9 | 16815 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16816 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16817 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16818 | == 0); | |
8b2dbe47 KB |
16819 | type = make_type_with_address_space (type, type_flags); |
16820 | } | |
16821 | else if (TYPE_LENGTH (type) != byte_size) | |
16822 | { | |
3e43a32a MS |
16823 | complaint (&symfile_complaints, |
16824 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 16825 | } |
6e70227d | 16826 | else |
9a619af0 MS |
16827 | { |
16828 | /* Should we also complain about unhandled address classes? */ | |
16829 | } | |
c906108c | 16830 | } |
8b2dbe47 KB |
16831 | |
16832 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 16833 | return set_die_type (die, type, cu); |
c906108c SS |
16834 | } |
16835 | ||
16836 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16837 | the user defined type vector. */ | |
16838 | ||
f792889a | 16839 | static struct type * |
e7c27a73 | 16840 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16841 | { |
16842 | struct type *type; | |
16843 | struct type *to_type; | |
16844 | struct type *domain; | |
16845 | ||
e7c27a73 DJ |
16846 | to_type = die_type (die, cu); |
16847 | domain = die_containing_type (die, cu); | |
0d5de010 | 16848 | |
7e314c57 JK |
16849 | /* The calls above may have already set the type for this DIE. */ |
16850 | type = get_die_type (die, cu); | |
16851 | if (type) | |
16852 | return type; | |
16853 | ||
0d5de010 DJ |
16854 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16855 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16856 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16857 | { | |
16858 | struct type *new_type = alloc_type (cu->objfile); | |
16859 | ||
16860 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16861 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16862 | TYPE_VARARGS (to_type)); | |
16863 | type = lookup_methodptr_type (new_type); | |
16864 | } | |
0d5de010 DJ |
16865 | else |
16866 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16867 | |
f792889a | 16868 | return set_die_type (die, type, cu); |
c906108c SS |
16869 | } |
16870 | ||
4297a3f0 | 16871 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16872 | the user defined type vector. */ |
16873 | ||
f792889a | 16874 | static struct type * |
4297a3f0 AV |
16875 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16876 | enum type_code refcode) | |
c906108c | 16877 | { |
e7c27a73 | 16878 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16879 | struct type *type, *target_type; |
c906108c SS |
16880 | struct attribute *attr; |
16881 | ||
4297a3f0 AV |
16882 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16883 | ||
7e314c57 JK |
16884 | target_type = die_type (die, cu); |
16885 | ||
16886 | /* The die_type call above may have already set the type for this DIE. */ | |
16887 | type = get_die_type (die, cu); | |
16888 | if (type) | |
16889 | return type; | |
16890 | ||
4297a3f0 | 16891 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16892 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16893 | if (attr) |
16894 | { | |
16895 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16896 | } | |
16897 | else | |
16898 | { | |
107d2387 | 16899 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16900 | } |
f792889a | 16901 | return set_die_type (die, type, cu); |
c906108c SS |
16902 | } |
16903 | ||
cf363f18 MW |
16904 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16905 | outputs DWARF type qualifiers that apply to an array, not the | |
16906 | element type. But GDB relies on the array element type to carry | |
16907 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16908 | specification. */ | |
16909 | ||
16910 | static struct type * | |
16911 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16912 | struct type *base_type, int cnst, int voltl) | |
16913 | { | |
16914 | struct type *el_type, *inner_array; | |
16915 | ||
16916 | base_type = copy_type (base_type); | |
16917 | inner_array = base_type; | |
16918 | ||
16919 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16920 | { | |
16921 | TYPE_TARGET_TYPE (inner_array) = | |
16922 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16923 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16924 | } | |
16925 | ||
16926 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16927 | cnst |= TYPE_CONST (el_type); | |
16928 | voltl |= TYPE_VOLATILE (el_type); | |
16929 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16930 | ||
16931 | return set_die_type (die, base_type, cu); | |
16932 | } | |
16933 | ||
f792889a | 16934 | static struct type * |
e7c27a73 | 16935 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16936 | { |
f792889a | 16937 | struct type *base_type, *cv_type; |
c906108c | 16938 | |
e7c27a73 | 16939 | base_type = die_type (die, cu); |
7e314c57 JK |
16940 | |
16941 | /* The die_type call above may have already set the type for this DIE. */ | |
16942 | cv_type = get_die_type (die, cu); | |
16943 | if (cv_type) | |
16944 | return cv_type; | |
16945 | ||
2f608a3a KW |
16946 | /* In case the const qualifier is applied to an array type, the element type |
16947 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16948 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16949 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16950 | |
f792889a DJ |
16951 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16952 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16953 | } |
16954 | ||
f792889a | 16955 | static struct type * |
e7c27a73 | 16956 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16957 | { |
f792889a | 16958 | struct type *base_type, *cv_type; |
c906108c | 16959 | |
e7c27a73 | 16960 | base_type = die_type (die, cu); |
7e314c57 JK |
16961 | |
16962 | /* The die_type call above may have already set the type for this DIE. */ | |
16963 | cv_type = get_die_type (die, cu); | |
16964 | if (cv_type) | |
16965 | return cv_type; | |
16966 | ||
cf363f18 MW |
16967 | /* In case the volatile qualifier is applied to an array type, the |
16968 | element type is so qualified, not the array type (section 6.7.3 | |
16969 | of C99). */ | |
16970 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16971 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16972 | ||
f792889a DJ |
16973 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16974 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16975 | } |
16976 | ||
06d66ee9 TT |
16977 | /* Handle DW_TAG_restrict_type. */ |
16978 | ||
16979 | static struct type * | |
16980 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16981 | { | |
16982 | struct type *base_type, *cv_type; | |
16983 | ||
16984 | base_type = die_type (die, cu); | |
16985 | ||
16986 | /* The die_type call above may have already set the type for this DIE. */ | |
16987 | cv_type = get_die_type (die, cu); | |
16988 | if (cv_type) | |
16989 | return cv_type; | |
16990 | ||
16991 | cv_type = make_restrict_type (base_type); | |
16992 | return set_die_type (die, cv_type, cu); | |
16993 | } | |
16994 | ||
a2c2acaf MW |
16995 | /* Handle DW_TAG_atomic_type. */ |
16996 | ||
16997 | static struct type * | |
16998 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16999 | { | |
17000 | struct type *base_type, *cv_type; | |
17001 | ||
17002 | base_type = die_type (die, cu); | |
17003 | ||
17004 | /* The die_type call above may have already set the type for this DIE. */ | |
17005 | cv_type = get_die_type (die, cu); | |
17006 | if (cv_type) | |
17007 | return cv_type; | |
17008 | ||
17009 | cv_type = make_atomic_type (base_type); | |
17010 | return set_die_type (die, cv_type, cu); | |
17011 | } | |
17012 | ||
c906108c SS |
17013 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17014 | the user defined type vector. It isn't really a user defined type, | |
17015 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17016 | attribute to reference it. */ | |
17017 | ||
f792889a | 17018 | static struct type * |
e7c27a73 | 17019 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17020 | { |
e7c27a73 | 17021 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 17022 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17023 | struct type *type, *range_type, *index_type, *char_type; |
17024 | struct attribute *attr; | |
17025 | unsigned int length; | |
17026 | ||
e142c38c | 17027 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17028 | if (attr) |
17029 | { | |
17030 | length = DW_UNSND (attr); | |
17031 | } | |
17032 | else | |
17033 | { | |
0963b4bd | 17034 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17035 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17036 | if (attr) |
17037 | { | |
17038 | length = DW_UNSND (attr); | |
17039 | } | |
17040 | else | |
17041 | { | |
17042 | length = 1; | |
17043 | } | |
c906108c | 17044 | } |
6ccb9162 | 17045 | |
46bf5051 | 17046 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17047 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17048 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17049 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17050 | |
f792889a | 17051 | return set_die_type (die, type, cu); |
c906108c SS |
17052 | } |
17053 | ||
4d804846 JB |
17054 | /* Assuming that DIE corresponds to a function, returns nonzero |
17055 | if the function is prototyped. */ | |
17056 | ||
17057 | static int | |
17058 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17059 | { | |
17060 | struct attribute *attr; | |
17061 | ||
17062 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17063 | if (attr && (DW_UNSND (attr) != 0)) | |
17064 | return 1; | |
17065 | ||
17066 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17067 | is only meaninful for C, but the concept also extends to other | |
17068 | languages that allow unprototyped functions (Eg: Objective C). | |
17069 | For all other languages, assume that functions are always | |
17070 | prototyped. */ | |
17071 | if (cu->language != language_c | |
17072 | && cu->language != language_objc | |
17073 | && cu->language != language_opencl) | |
17074 | return 1; | |
17075 | ||
17076 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17077 | prototyped and unprototyped functions; default to prototyped, | |
17078 | since that is more common in modern code (and RealView warns | |
17079 | about unprototyped functions). */ | |
17080 | if (producer_is_realview (cu->producer)) | |
17081 | return 1; | |
17082 | ||
17083 | return 0; | |
17084 | } | |
17085 | ||
c906108c SS |
17086 | /* Handle DIES due to C code like: |
17087 | ||
17088 | struct foo | |
c5aa993b JM |
17089 | { |
17090 | int (*funcp)(int a, long l); | |
17091 | int b; | |
17092 | }; | |
c906108c | 17093 | |
0963b4bd | 17094 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17095 | |
f792889a | 17096 | static struct type * |
e7c27a73 | 17097 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17098 | { |
bb5ed363 | 17099 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
17100 | struct type *type; /* Type that this function returns. */ |
17101 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17102 | struct attribute *attr; |
17103 | ||
e7c27a73 | 17104 | type = die_type (die, cu); |
7e314c57 JK |
17105 | |
17106 | /* The die_type call above may have already set the type for this DIE. */ | |
17107 | ftype = get_die_type (die, cu); | |
17108 | if (ftype) | |
17109 | return ftype; | |
17110 | ||
0c8b41f1 | 17111 | ftype = lookup_function_type (type); |
c906108c | 17112 | |
4d804846 | 17113 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17114 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17115 | |
c055b101 CV |
17116 | /* Store the calling convention in the type if it's available in |
17117 | the subroutine die. Otherwise set the calling convention to | |
17118 | the default value DW_CC_normal. */ | |
17119 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17120 | if (attr) |
17121 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17122 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17123 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17124 | else | |
17125 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17126 | |
743649fd MW |
17127 | /* Record whether the function returns normally to its caller or not |
17128 | if the DWARF producer set that information. */ | |
17129 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17130 | if (attr && (DW_UNSND (attr) != 0)) | |
17131 | TYPE_NO_RETURN (ftype) = 1; | |
17132 | ||
76c10ea2 GM |
17133 | /* We need to add the subroutine type to the die immediately so |
17134 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17135 | declared as the same subroutine type. */ |
76c10ea2 | 17136 | set_die_type (die, ftype, cu); |
6e70227d | 17137 | |
639d11d3 | 17138 | if (die->child != NULL) |
c906108c | 17139 | { |
bb5ed363 | 17140 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17141 | struct die_info *child_die; |
8072405b | 17142 | int nparams, iparams; |
c906108c SS |
17143 | |
17144 | /* Count the number of parameters. | |
17145 | FIXME: GDB currently ignores vararg functions, but knows about | |
17146 | vararg member functions. */ | |
8072405b | 17147 | nparams = 0; |
639d11d3 | 17148 | child_die = die->child; |
c906108c SS |
17149 | while (child_die && child_die->tag) |
17150 | { | |
17151 | if (child_die->tag == DW_TAG_formal_parameter) | |
17152 | nparams++; | |
17153 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17154 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17155 | child_die = sibling_die (child_die); |
17156 | } | |
17157 | ||
17158 | /* Allocate storage for parameters and fill them in. */ | |
17159 | TYPE_NFIELDS (ftype) = nparams; | |
17160 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17161 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17162 | |
8072405b JK |
17163 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17164 | even if we error out during the parameters reading below. */ | |
17165 | for (iparams = 0; iparams < nparams; iparams++) | |
17166 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17167 | ||
17168 | iparams = 0; | |
639d11d3 | 17169 | child_die = die->child; |
c906108c SS |
17170 | while (child_die && child_die->tag) |
17171 | { | |
17172 | if (child_die->tag == DW_TAG_formal_parameter) | |
17173 | { | |
3ce3b1ba PA |
17174 | struct type *arg_type; |
17175 | ||
17176 | /* DWARF version 2 has no clean way to discern C++ | |
17177 | static and non-static member functions. G++ helps | |
17178 | GDB by marking the first parameter for non-static | |
17179 | member functions (which is the this pointer) as | |
17180 | artificial. We pass this information to | |
17181 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17182 | ||
17183 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17184 | 4.5 does not yet generate. */ | |
e142c38c | 17185 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17186 | if (attr) |
17187 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17188 | else | |
9c37b5ae | 17189 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17190 | arg_type = die_type (child_die, cu); |
17191 | ||
17192 | /* RealView does not mark THIS as const, which the testsuite | |
17193 | expects. GCC marks THIS as const in method definitions, | |
17194 | but not in the class specifications (GCC PR 43053). */ | |
17195 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17196 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17197 | { | |
17198 | int is_this = 0; | |
17199 | struct dwarf2_cu *arg_cu = cu; | |
17200 | const char *name = dwarf2_name (child_die, cu); | |
17201 | ||
17202 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17203 | if (attr) | |
17204 | { | |
17205 | /* If the compiler emits this, use it. */ | |
17206 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17207 | is_this = 1; | |
17208 | } | |
17209 | else if (name && strcmp (name, "this") == 0) | |
17210 | /* Function definitions will have the argument names. */ | |
17211 | is_this = 1; | |
17212 | else if (name == NULL && iparams == 0) | |
17213 | /* Declarations may not have the names, so like | |
17214 | elsewhere in GDB, assume an artificial first | |
17215 | argument is "this". */ | |
17216 | is_this = 1; | |
17217 | ||
17218 | if (is_this) | |
17219 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17220 | arg_type, 0); | |
17221 | } | |
17222 | ||
17223 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17224 | iparams++; |
17225 | } | |
17226 | child_die = sibling_die (child_die); | |
17227 | } | |
17228 | } | |
17229 | ||
76c10ea2 | 17230 | return ftype; |
c906108c SS |
17231 | } |
17232 | ||
f792889a | 17233 | static struct type * |
e7c27a73 | 17234 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17235 | { |
e7c27a73 | 17236 | struct objfile *objfile = cu->objfile; |
0114d602 | 17237 | const char *name = NULL; |
3c8e0968 | 17238 | struct type *this_type, *target_type; |
c906108c | 17239 | |
94af9270 | 17240 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17241 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17242 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17243 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17244 | target_type = die_type (die, cu); |
17245 | if (target_type != this_type) | |
17246 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17247 | else | |
17248 | { | |
17249 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17250 | spec and cause infinite loops in GDB. */ | |
17251 | complaint (&symfile_complaints, | |
17252 | _("Self-referential DW_TAG_typedef " | |
17253 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 17254 | to_underlying (die->sect_off), objfile_name (objfile)); |
3c8e0968 DE |
17255 | TYPE_TARGET_TYPE (this_type) = NULL; |
17256 | } | |
f792889a | 17257 | return this_type; |
c906108c SS |
17258 | } |
17259 | ||
9b790ce7 UW |
17260 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17261 | (which may be different from NAME) to the architecture back-end to allow | |
17262 | it to guess the correct format if necessary. */ | |
17263 | ||
17264 | static struct type * | |
17265 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17266 | const char *name_hint) | |
17267 | { | |
17268 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17269 | const struct floatformat **format; | |
17270 | struct type *type; | |
17271 | ||
17272 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17273 | if (format) | |
17274 | type = init_float_type (objfile, bits, name, format); | |
17275 | else | |
77b7c781 | 17276 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17277 | |
17278 | return type; | |
17279 | } | |
17280 | ||
c906108c SS |
17281 | /* Find a representation of a given base type and install |
17282 | it in the TYPE field of the die. */ | |
17283 | ||
f792889a | 17284 | static struct type * |
e7c27a73 | 17285 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17286 | { |
e7c27a73 | 17287 | struct objfile *objfile = cu->objfile; |
c906108c SS |
17288 | struct type *type; |
17289 | struct attribute *attr; | |
19f392bc | 17290 | int encoding = 0, bits = 0; |
15d034d0 | 17291 | const char *name; |
c906108c | 17292 | |
e142c38c | 17293 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17294 | if (attr) |
17295 | { | |
17296 | encoding = DW_UNSND (attr); | |
17297 | } | |
e142c38c | 17298 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17299 | if (attr) |
17300 | { | |
19f392bc | 17301 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17302 | } |
39cbfefa | 17303 | name = dwarf2_name (die, cu); |
6ccb9162 | 17304 | if (!name) |
c906108c | 17305 | { |
6ccb9162 UW |
17306 | complaint (&symfile_complaints, |
17307 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 17308 | } |
6ccb9162 UW |
17309 | |
17310 | switch (encoding) | |
c906108c | 17311 | { |
6ccb9162 UW |
17312 | case DW_ATE_address: |
17313 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17314 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17315 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17316 | break; |
17317 | case DW_ATE_boolean: | |
19f392bc | 17318 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17319 | break; |
17320 | case DW_ATE_complex_float: | |
9b790ce7 | 17321 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17322 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17323 | break; |
17324 | case DW_ATE_decimal_float: | |
19f392bc | 17325 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17326 | break; |
17327 | case DW_ATE_float: | |
9b790ce7 | 17328 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17329 | break; |
17330 | case DW_ATE_signed: | |
19f392bc | 17331 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17332 | break; |
17333 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17334 | if (cu->language == language_fortran |
17335 | && name | |
61012eef | 17336 | && startswith (name, "character(")) |
19f392bc UW |
17337 | type = init_character_type (objfile, bits, 1, name); |
17338 | else | |
17339 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17340 | break; |
17341 | case DW_ATE_signed_char: | |
6e70227d | 17342 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17343 | || cu->language == language_pascal |
17344 | || cu->language == language_fortran) | |
19f392bc UW |
17345 | type = init_character_type (objfile, bits, 0, name); |
17346 | else | |
17347 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17348 | break; |
17349 | case DW_ATE_unsigned_char: | |
868a0084 | 17350 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17351 | || cu->language == language_pascal |
c44af4eb TT |
17352 | || cu->language == language_fortran |
17353 | || cu->language == language_rust) | |
19f392bc UW |
17354 | type = init_character_type (objfile, bits, 1, name); |
17355 | else | |
17356 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17357 | break; |
75079b2b | 17358 | case DW_ATE_UTF: |
53e710ac PA |
17359 | { |
17360 | gdbarch *arch = get_objfile_arch (objfile); | |
17361 | ||
17362 | if (bits == 16) | |
17363 | type = builtin_type (arch)->builtin_char16; | |
17364 | else if (bits == 32) | |
17365 | type = builtin_type (arch)->builtin_char32; | |
17366 | else | |
17367 | { | |
17368 | complaint (&symfile_complaints, | |
17369 | _("unsupported DW_ATE_UTF bit size: '%d'"), | |
17370 | bits); | |
17371 | type = init_integer_type (objfile, bits, 1, name); | |
17372 | } | |
17373 | return set_die_type (die, type, cu); | |
17374 | } | |
75079b2b TT |
17375 | break; |
17376 | ||
6ccb9162 UW |
17377 | default: |
17378 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
17379 | dwarf_type_encoding_name (encoding)); | |
77b7c781 | 17380 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17381 | break; |
c906108c | 17382 | } |
6ccb9162 | 17383 | |
0114d602 | 17384 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17385 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17386 | |
f792889a | 17387 | return set_die_type (die, type, cu); |
c906108c SS |
17388 | } |
17389 | ||
80180f79 SA |
17390 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17391 | resulting value of the attribute into struct bound_prop. | |
17392 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17393 | ||
17394 | static int | |
17395 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17396 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17397 | { | |
17398 | struct dwarf2_property_baton *baton; | |
17399 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
17400 | ||
17401 | if (attr == NULL || prop == NULL) | |
17402 | return 0; | |
17403 | ||
17404 | if (attr_form_is_block (attr)) | |
17405 | { | |
8d749320 | 17406 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17407 | baton->referenced_type = NULL; |
17408 | baton->locexpr.per_cu = cu->per_cu; | |
17409 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17410 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17411 | prop->data.baton = baton; | |
17412 | prop->kind = PROP_LOCEXPR; | |
17413 | gdb_assert (prop->data.baton != NULL); | |
17414 | } | |
17415 | else if (attr_form_is_ref (attr)) | |
17416 | { | |
17417 | struct dwarf2_cu *target_cu = cu; | |
17418 | struct die_info *target_die; | |
17419 | struct attribute *target_attr; | |
17420 | ||
17421 | target_die = follow_die_ref (die, attr, &target_cu); | |
17422 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17423 | if (target_attr == NULL) |
17424 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17425 | target_cu); | |
80180f79 SA |
17426 | if (target_attr == NULL) |
17427 | return 0; | |
17428 | ||
df25ebbd | 17429 | switch (target_attr->name) |
80180f79 | 17430 | { |
df25ebbd JB |
17431 | case DW_AT_location: |
17432 | if (attr_form_is_section_offset (target_attr)) | |
17433 | { | |
8d749320 | 17434 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17435 | baton->referenced_type = die_type (target_die, target_cu); |
17436 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17437 | prop->data.baton = baton; | |
17438 | prop->kind = PROP_LOCLIST; | |
17439 | gdb_assert (prop->data.baton != NULL); | |
17440 | } | |
17441 | else if (attr_form_is_block (target_attr)) | |
17442 | { | |
8d749320 | 17443 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17444 | baton->referenced_type = die_type (target_die, target_cu); |
17445 | baton->locexpr.per_cu = cu->per_cu; | |
17446 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17447 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17448 | prop->data.baton = baton; | |
17449 | prop->kind = PROP_LOCEXPR; | |
17450 | gdb_assert (prop->data.baton != NULL); | |
17451 | } | |
17452 | else | |
17453 | { | |
17454 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17455 | "dynamic property"); | |
17456 | return 0; | |
17457 | } | |
17458 | break; | |
17459 | case DW_AT_data_member_location: | |
17460 | { | |
17461 | LONGEST offset; | |
17462 | ||
17463 | if (!handle_data_member_location (target_die, target_cu, | |
17464 | &offset)) | |
17465 | return 0; | |
17466 | ||
8d749320 | 17467 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17468 | baton->referenced_type = read_type_die (target_die->parent, |
17469 | target_cu); | |
df25ebbd JB |
17470 | baton->offset_info.offset = offset; |
17471 | baton->offset_info.type = die_type (target_die, target_cu); | |
17472 | prop->data.baton = baton; | |
17473 | prop->kind = PROP_ADDR_OFFSET; | |
17474 | break; | |
17475 | } | |
80180f79 SA |
17476 | } |
17477 | } | |
17478 | else if (attr_form_is_constant (attr)) | |
17479 | { | |
17480 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17481 | prop->kind = PROP_CONST; | |
17482 | } | |
17483 | else | |
17484 | { | |
17485 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17486 | dwarf2_name (die, cu)); | |
17487 | return 0; | |
17488 | } | |
17489 | ||
17490 | return 1; | |
17491 | } | |
17492 | ||
a02abb62 JB |
17493 | /* Read the given DW_AT_subrange DIE. */ |
17494 | ||
f792889a | 17495 | static struct type * |
a02abb62 JB |
17496 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17497 | { | |
4c9ad8c2 | 17498 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17499 | struct type *range_type; |
17500 | struct attribute *attr; | |
729efb13 | 17501 | struct dynamic_prop low, high; |
4fae6e18 | 17502 | int low_default_is_valid; |
c451ebe5 | 17503 | int high_bound_is_count = 0; |
15d034d0 | 17504 | const char *name; |
43bbcdc2 | 17505 | LONGEST negative_mask; |
e77813c8 | 17506 | |
4c9ad8c2 TT |
17507 | orig_base_type = die_type (die, cu); |
17508 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17509 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17510 | creating the range type, but we use the result of check_typedef | |
17511 | when examining properties of the type. */ | |
17512 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17513 | |
7e314c57 JK |
17514 | /* The die_type call above may have already set the type for this DIE. */ |
17515 | range_type = get_die_type (die, cu); | |
17516 | if (range_type) | |
17517 | return range_type; | |
17518 | ||
729efb13 SA |
17519 | low.kind = PROP_CONST; |
17520 | high.kind = PROP_CONST; | |
17521 | high.data.const_val = 0; | |
17522 | ||
4fae6e18 JK |
17523 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17524 | omitting DW_AT_lower_bound. */ | |
17525 | switch (cu->language) | |
6e70227d | 17526 | { |
4fae6e18 JK |
17527 | case language_c: |
17528 | case language_cplus: | |
729efb13 | 17529 | low.data.const_val = 0; |
4fae6e18 JK |
17530 | low_default_is_valid = 1; |
17531 | break; | |
17532 | case language_fortran: | |
729efb13 | 17533 | low.data.const_val = 1; |
4fae6e18 JK |
17534 | low_default_is_valid = 1; |
17535 | break; | |
17536 | case language_d: | |
4fae6e18 | 17537 | case language_objc: |
c44af4eb | 17538 | case language_rust: |
729efb13 | 17539 | low.data.const_val = 0; |
4fae6e18 JK |
17540 | low_default_is_valid = (cu->header.version >= 4); |
17541 | break; | |
17542 | case language_ada: | |
17543 | case language_m2: | |
17544 | case language_pascal: | |
729efb13 | 17545 | low.data.const_val = 1; |
4fae6e18 JK |
17546 | low_default_is_valid = (cu->header.version >= 4); |
17547 | break; | |
17548 | default: | |
729efb13 | 17549 | low.data.const_val = 0; |
4fae6e18 JK |
17550 | low_default_is_valid = 0; |
17551 | break; | |
a02abb62 JB |
17552 | } |
17553 | ||
e142c38c | 17554 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17555 | if (attr) |
11c1ba78 | 17556 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
17557 | else if (!low_default_is_valid) |
17558 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
17559 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 17560 | to_underlying (die->sect_off), objfile_name (cu->objfile)); |
a02abb62 | 17561 | |
e142c38c | 17562 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 17563 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
17564 | { |
17565 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 17566 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17567 | { |
c451ebe5 SA |
17568 | /* If bounds are constant do the final calculation here. */ |
17569 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17570 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17571 | else | |
17572 | high_bound_is_count = 1; | |
c2ff108b | 17573 | } |
e77813c8 PM |
17574 | } |
17575 | ||
17576 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17577 | without specifying a base type. | |
17578 | In that case, the base type must be set to the type of | |
17579 | the lower bound, upper bound or count, in that order, if any of these | |
17580 | three attributes references an object that has a type. | |
17581 | If no base type is found, the Dwarf-2 specifications say that | |
17582 | a signed integer type of size equal to the size of an address should | |
17583 | be used. | |
17584 | For the following C code: `extern char gdb_int [];' | |
17585 | GCC produces an empty range DIE. | |
17586 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17587 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17588 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17589 | { | |
17590 | struct objfile *objfile = cu->objfile; | |
17591 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17592 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17593 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17594 | ||
17595 | /* Test "int", "long int", and "long long int" objfile types, | |
17596 | and select the first one having a size above or equal to the | |
17597 | architecture address size. */ | |
17598 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17599 | base_type = int_type; | |
17600 | else | |
17601 | { | |
17602 | int_type = objfile_type (objfile)->builtin_long; | |
17603 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17604 | base_type = int_type; | |
17605 | else | |
17606 | { | |
17607 | int_type = objfile_type (objfile)->builtin_long_long; | |
17608 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17609 | base_type = int_type; | |
17610 | } | |
17611 | } | |
17612 | } | |
a02abb62 | 17613 | |
dbb9c2b1 JB |
17614 | /* Normally, the DWARF producers are expected to use a signed |
17615 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17616 | But this is unfortunately not always the case, as witnessed | |
17617 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17618 | is used instead. To work around that ambiguity, we treat | |
17619 | the bounds as signed, and thus sign-extend their values, when | |
17620 | the base type is signed. */ | |
6e70227d | 17621 | negative_mask = |
66c6502d | 17622 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17623 | if (low.kind == PROP_CONST |
17624 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17625 | low.data.const_val |= negative_mask; | |
17626 | if (high.kind == PROP_CONST | |
17627 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17628 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17629 | |
729efb13 | 17630 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17631 | |
c451ebe5 SA |
17632 | if (high_bound_is_count) |
17633 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17634 | ||
c2ff108b JK |
17635 | /* Ada expects an empty array on no boundary attributes. */ |
17636 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17637 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17638 | |
39cbfefa DJ |
17639 | name = dwarf2_name (die, cu); |
17640 | if (name) | |
17641 | TYPE_NAME (range_type) = name; | |
6e70227d | 17642 | |
e142c38c | 17643 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17644 | if (attr) |
17645 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17646 | ||
7e314c57 JK |
17647 | set_die_type (die, range_type, cu); |
17648 | ||
17649 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17650 | set_descriptive_type (range_type, die, cu); |
17651 | ||
7e314c57 | 17652 | return range_type; |
a02abb62 | 17653 | } |
6e70227d | 17654 | |
f792889a | 17655 | static struct type * |
81a17f79 JB |
17656 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17657 | { | |
17658 | struct type *type; | |
81a17f79 | 17659 | |
81a17f79 JB |
17660 | /* For now, we only support the C meaning of an unspecified type: void. */ |
17661 | ||
19f392bc | 17662 | type = init_type (cu->objfile, TYPE_CODE_VOID, 0, NULL); |
0114d602 | 17663 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17664 | |
f792889a | 17665 | return set_die_type (die, type, cu); |
81a17f79 | 17666 | } |
a02abb62 | 17667 | |
639d11d3 DC |
17668 | /* Read a single die and all its descendents. Set the die's sibling |
17669 | field to NULL; set other fields in the die correctly, and set all | |
17670 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17671 | location of the info_ptr after reading all of those dies. PARENT | |
17672 | is the parent of the die in question. */ | |
17673 | ||
17674 | static struct die_info * | |
dee91e82 | 17675 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17676 | const gdb_byte *info_ptr, |
17677 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17678 | struct die_info *parent) |
639d11d3 DC |
17679 | { |
17680 | struct die_info *die; | |
d521ce57 | 17681 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17682 | int has_children; |
17683 | ||
bf6af496 | 17684 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17685 | if (die == NULL) |
17686 | { | |
17687 | *new_info_ptr = cur_ptr; | |
17688 | return NULL; | |
17689 | } | |
93311388 | 17690 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17691 | |
17692 | if (has_children) | |
bf6af496 | 17693 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17694 | else |
17695 | { | |
17696 | die->child = NULL; | |
17697 | *new_info_ptr = cur_ptr; | |
17698 | } | |
17699 | ||
17700 | die->sibling = NULL; | |
17701 | die->parent = parent; | |
17702 | return die; | |
17703 | } | |
17704 | ||
17705 | /* Read a die, all of its descendents, and all of its siblings; set | |
17706 | all of the fields of all of the dies correctly. Arguments are as | |
17707 | in read_die_and_children. */ | |
17708 | ||
17709 | static struct die_info * | |
bf6af496 | 17710 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17711 | const gdb_byte *info_ptr, |
17712 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17713 | struct die_info *parent) |
639d11d3 DC |
17714 | { |
17715 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17716 | const gdb_byte *cur_ptr; |
639d11d3 | 17717 | |
c906108c | 17718 | cur_ptr = info_ptr; |
639d11d3 DC |
17719 | first_die = last_sibling = NULL; |
17720 | ||
17721 | while (1) | |
c906108c | 17722 | { |
639d11d3 | 17723 | struct die_info *die |
dee91e82 | 17724 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17725 | |
1d325ec1 | 17726 | if (die == NULL) |
c906108c | 17727 | { |
639d11d3 DC |
17728 | *new_info_ptr = cur_ptr; |
17729 | return first_die; | |
c906108c | 17730 | } |
1d325ec1 DJ |
17731 | |
17732 | if (!first_die) | |
17733 | first_die = die; | |
c906108c | 17734 | else |
1d325ec1 DJ |
17735 | last_sibling->sibling = die; |
17736 | ||
17737 | last_sibling = die; | |
c906108c | 17738 | } |
c906108c SS |
17739 | } |
17740 | ||
bf6af496 DE |
17741 | /* Read a die, all of its descendents, and all of its siblings; set |
17742 | all of the fields of all of the dies correctly. Arguments are as | |
17743 | in read_die_and_children. | |
17744 | This the main entry point for reading a DIE and all its children. */ | |
17745 | ||
17746 | static struct die_info * | |
17747 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17748 | const gdb_byte *info_ptr, |
17749 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17750 | struct die_info *parent) |
17751 | { | |
17752 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17753 | new_info_ptr, parent); | |
17754 | ||
b4f54984 | 17755 | if (dwarf_die_debug) |
bf6af496 DE |
17756 | { |
17757 | fprintf_unfiltered (gdb_stdlog, | |
17758 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17759 | get_section_name (reader->die_section), |
bf6af496 DE |
17760 | (unsigned) (info_ptr - reader->die_section->buffer), |
17761 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17762 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17763 | } |
17764 | ||
17765 | return die; | |
17766 | } | |
17767 | ||
3019eac3 DE |
17768 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17769 | attributes. | |
17770 | The caller is responsible for filling in the extra attributes | |
17771 | and updating (*DIEP)->num_attrs. | |
17772 | Set DIEP to point to a newly allocated die with its information, | |
17773 | except for its child, sibling, and parent fields. | |
17774 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 17775 | |
d521ce57 | 17776 | static const gdb_byte * |
3019eac3 | 17777 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17778 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 17779 | int *has_children, int num_extra_attrs) |
93311388 | 17780 | { |
b64f50a1 | 17781 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17782 | struct abbrev_info *abbrev; |
17783 | struct die_info *die; | |
17784 | struct dwarf2_cu *cu = reader->cu; | |
17785 | bfd *abfd = reader->abfd; | |
17786 | ||
9c541725 | 17787 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17788 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17789 | info_ptr += bytes_read; | |
17790 | if (!abbrev_number) | |
17791 | { | |
17792 | *diep = NULL; | |
17793 | *has_children = 0; | |
17794 | return info_ptr; | |
17795 | } | |
17796 | ||
433df2d4 | 17797 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 17798 | if (!abbrev) |
348e048f DE |
17799 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17800 | abbrev_number, | |
17801 | bfd_get_filename (abfd)); | |
17802 | ||
3019eac3 | 17803 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17804 | die->sect_off = sect_off; |
93311388 DE |
17805 | die->tag = abbrev->tag; |
17806 | die->abbrev = abbrev_number; | |
17807 | ||
3019eac3 DE |
17808 | /* Make the result usable. |
17809 | The caller needs to update num_attrs after adding the extra | |
17810 | attributes. */ | |
93311388 DE |
17811 | die->num_attrs = abbrev->num_attrs; |
17812 | ||
17813 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
17814 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
17815 | info_ptr); | |
93311388 DE |
17816 | |
17817 | *diep = die; | |
17818 | *has_children = abbrev->has_children; | |
17819 | return info_ptr; | |
17820 | } | |
17821 | ||
3019eac3 DE |
17822 | /* Read a die and all its attributes. |
17823 | Set DIEP to point to a newly allocated die with its information, | |
17824 | except for its child, sibling, and parent fields. | |
17825 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
17826 | ||
d521ce57 | 17827 | static const gdb_byte * |
3019eac3 | 17828 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 17829 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
17830 | int *has_children) |
17831 | { | |
d521ce57 | 17832 | const gdb_byte *result; |
bf6af496 DE |
17833 | |
17834 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
17835 | ||
b4f54984 | 17836 | if (dwarf_die_debug) |
bf6af496 DE |
17837 | { |
17838 | fprintf_unfiltered (gdb_stdlog, | |
17839 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17840 | get_section_name (reader->die_section), |
bf6af496 DE |
17841 | (unsigned) (info_ptr - reader->die_section->buffer), |
17842 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17843 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17844 | } |
17845 | ||
17846 | return result; | |
3019eac3 | 17847 | } |
433df2d4 DE |
17848 | \f |
17849 | /* Abbreviation tables. | |
3019eac3 | 17850 | |
433df2d4 | 17851 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
17852 | stored in a separate .debug_abbrev section. Before we read any |
17853 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
17854 | in a hash table. */ |
17855 | ||
17856 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
17857 | ||
17858 | static struct abbrev_info * | |
17859 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
17860 | { | |
17861 | struct abbrev_info *abbrev; | |
17862 | ||
8d749320 | 17863 | abbrev = XOBNEW (&abbrev_table->abbrev_obstack, struct abbrev_info); |
433df2d4 | 17864 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 17865 | |
433df2d4 DE |
17866 | return abbrev; |
17867 | } | |
17868 | ||
17869 | /* Add an abbreviation to the table. */ | |
c906108c SS |
17870 | |
17871 | static void | |
433df2d4 DE |
17872 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
17873 | unsigned int abbrev_number, | |
17874 | struct abbrev_info *abbrev) | |
17875 | { | |
17876 | unsigned int hash_number; | |
17877 | ||
17878 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
17879 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
17880 | abbrev_table->abbrevs[hash_number] = abbrev; | |
17881 | } | |
dee91e82 | 17882 | |
433df2d4 DE |
17883 | /* Look up an abbrev in the table. |
17884 | Returns NULL if the abbrev is not found. */ | |
17885 | ||
17886 | static struct abbrev_info * | |
17887 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
17888 | unsigned int abbrev_number) | |
c906108c | 17889 | { |
433df2d4 DE |
17890 | unsigned int hash_number; |
17891 | struct abbrev_info *abbrev; | |
17892 | ||
17893 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
17894 | abbrev = abbrev_table->abbrevs[hash_number]; | |
17895 | ||
17896 | while (abbrev) | |
17897 | { | |
17898 | if (abbrev->number == abbrev_number) | |
17899 | return abbrev; | |
17900 | abbrev = abbrev->next; | |
17901 | } | |
17902 | return NULL; | |
17903 | } | |
17904 | ||
17905 | /* Read in an abbrev table. */ | |
17906 | ||
17907 | static struct abbrev_table * | |
17908 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
9c541725 | 17909 | sect_offset sect_off) |
433df2d4 DE |
17910 | { |
17911 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 17912 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 17913 | struct abbrev_table *abbrev_table; |
d521ce57 | 17914 | const gdb_byte *abbrev_ptr; |
c906108c SS |
17915 | struct abbrev_info *cur_abbrev; |
17916 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 17917 | unsigned int abbrev_form; |
f3dd6933 DJ |
17918 | struct attr_abbrev *cur_attrs; |
17919 | unsigned int allocated_attrs; | |
c906108c | 17920 | |
70ba0933 | 17921 | abbrev_table = XNEW (struct abbrev_table); |
9c541725 | 17922 | abbrev_table->sect_off = sect_off; |
433df2d4 | 17923 | obstack_init (&abbrev_table->abbrev_obstack); |
8d749320 SM |
17924 | abbrev_table->abbrevs = |
17925 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct abbrev_info *, | |
17926 | ABBREV_HASH_SIZE); | |
433df2d4 DE |
17927 | memset (abbrev_table->abbrevs, 0, |
17928 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 17929 | |
433df2d4 | 17930 | dwarf2_read_section (objfile, section); |
9c541725 | 17931 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
17932 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
17933 | abbrev_ptr += bytes_read; | |
17934 | ||
f3dd6933 | 17935 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 17936 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 17937 | |
0963b4bd | 17938 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
17939 | while (abbrev_number) |
17940 | { | |
433df2d4 | 17941 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
17942 | |
17943 | /* read in abbrev header */ | |
17944 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
17945 | cur_abbrev->tag |
17946 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
17947 | abbrev_ptr += bytes_read; |
17948 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
17949 | abbrev_ptr += 1; | |
17950 | ||
17951 | /* now read in declarations */ | |
22d2f3ab | 17952 | for (;;) |
c906108c | 17953 | { |
43988095 JK |
17954 | LONGEST implicit_const; |
17955 | ||
22d2f3ab JK |
17956 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
17957 | abbrev_ptr += bytes_read; | |
17958 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
17959 | abbrev_ptr += bytes_read; | |
43988095 JK |
17960 | if (abbrev_form == DW_FORM_implicit_const) |
17961 | { | |
17962 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
17963 | &bytes_read); | |
17964 | abbrev_ptr += bytes_read; | |
17965 | } | |
17966 | else | |
17967 | { | |
17968 | /* Initialize it due to a false compiler warning. */ | |
17969 | implicit_const = -1; | |
17970 | } | |
22d2f3ab JK |
17971 | |
17972 | if (abbrev_name == 0) | |
17973 | break; | |
17974 | ||
f3dd6933 | 17975 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 17976 | { |
f3dd6933 DJ |
17977 | allocated_attrs += ATTR_ALLOC_CHUNK; |
17978 | cur_attrs | |
224c3ddb | 17979 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 17980 | } |
ae038cb0 | 17981 | |
aead7601 SM |
17982 | cur_attrs[cur_abbrev->num_attrs].name |
17983 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 17984 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 17985 | = (enum dwarf_form) abbrev_form; |
43988095 | 17986 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 17987 | ++cur_abbrev->num_attrs; |
c906108c SS |
17988 | } |
17989 | ||
8d749320 SM |
17990 | cur_abbrev->attrs = |
17991 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
17992 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
17993 | memcpy (cur_abbrev->attrs, cur_attrs, |
17994 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
17995 | ||
433df2d4 | 17996 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
17997 | |
17998 | /* Get next abbreviation. | |
17999 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18000 | always properly terminated with an abbrev number of 0. |
18001 | Exit loop if we encounter an abbreviation which we have | |
18002 | already read (which means we are about to read the abbreviations | |
18003 | for the next compile unit) or if the end of the abbreviation | |
18004 | table is reached. */ | |
433df2d4 | 18005 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18006 | break; |
18007 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18008 | abbrev_ptr += bytes_read; | |
433df2d4 | 18009 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
18010 | break; |
18011 | } | |
f3dd6933 DJ |
18012 | |
18013 | xfree (cur_attrs); | |
433df2d4 | 18014 | return abbrev_table; |
c906108c SS |
18015 | } |
18016 | ||
433df2d4 | 18017 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 18018 | |
c906108c | 18019 | static void |
433df2d4 | 18020 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 18021 | { |
433df2d4 DE |
18022 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
18023 | xfree (abbrev_table); | |
c906108c SS |
18024 | } |
18025 | ||
f4dc4d17 DE |
18026 | /* Same as abbrev_table_free but as a cleanup. |
18027 | We pass in a pointer to the pointer to the table so that we can | |
18028 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 18029 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
18030 | |
18031 | static void | |
18032 | abbrev_table_free_cleanup (void *table_ptr) | |
18033 | { | |
9a3c8263 | 18034 | struct abbrev_table **abbrev_table_ptr = (struct abbrev_table **) table_ptr; |
f4dc4d17 DE |
18035 | |
18036 | if (*abbrev_table_ptr != NULL) | |
18037 | abbrev_table_free (*abbrev_table_ptr); | |
18038 | *abbrev_table_ptr = NULL; | |
18039 | } | |
18040 | ||
433df2d4 DE |
18041 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
18042 | ||
18043 | static void | |
18044 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
18045 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 18046 | { |
433df2d4 | 18047 | cu->abbrev_table = |
9c541725 | 18048 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_sect_off); |
433df2d4 | 18049 | } |
c906108c | 18050 | |
433df2d4 | 18051 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 18052 | |
433df2d4 DE |
18053 | static void |
18054 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
18055 | { | |
9a3c8263 | 18056 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr_to_cu; |
c906108c | 18057 | |
a2ce51a0 DE |
18058 | if (cu->abbrev_table != NULL) |
18059 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
18060 | /* Set this to NULL so that we SEGV if we try to read it later, |
18061 | and also because free_comp_unit verifies this is NULL. */ | |
18062 | cu->abbrev_table = NULL; | |
18063 | } | |
18064 | \f | |
72bf9492 DJ |
18065 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18066 | symbol for. */ | |
18067 | ||
18068 | static int | |
18069 | is_type_tag_for_partial (int tag) | |
18070 | { | |
18071 | switch (tag) | |
18072 | { | |
18073 | #if 0 | |
18074 | /* Some types that would be reasonable to generate partial symbols for, | |
18075 | that we don't at present. */ | |
18076 | case DW_TAG_array_type: | |
18077 | case DW_TAG_file_type: | |
18078 | case DW_TAG_ptr_to_member_type: | |
18079 | case DW_TAG_set_type: | |
18080 | case DW_TAG_string_type: | |
18081 | case DW_TAG_subroutine_type: | |
18082 | #endif | |
18083 | case DW_TAG_base_type: | |
18084 | case DW_TAG_class_type: | |
680b30c7 | 18085 | case DW_TAG_interface_type: |
72bf9492 DJ |
18086 | case DW_TAG_enumeration_type: |
18087 | case DW_TAG_structure_type: | |
18088 | case DW_TAG_subrange_type: | |
18089 | case DW_TAG_typedef: | |
18090 | case DW_TAG_union_type: | |
18091 | return 1; | |
18092 | default: | |
18093 | return 0; | |
18094 | } | |
18095 | } | |
18096 | ||
18097 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18098 | ||
18099 | static struct partial_die_info * | |
dee91e82 | 18100 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18101 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18102 | { |
dee91e82 | 18103 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 18104 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
18105 | struct partial_die_info *part_die; |
18106 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
18107 | struct abbrev_info *abbrev; | |
18108 | unsigned int bytes_read; | |
5afb4e99 | 18109 | unsigned int load_all = 0; |
72bf9492 DJ |
18110 | int nesting_level = 1; |
18111 | ||
18112 | parent_die = NULL; | |
18113 | last_die = NULL; | |
18114 | ||
7adf1e79 DE |
18115 | gdb_assert (cu->per_cu != NULL); |
18116 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18117 | load_all = 1; |
18118 | ||
72bf9492 DJ |
18119 | cu->partial_dies |
18120 | = htab_create_alloc_ex (cu->header.length / 12, | |
18121 | partial_die_hash, | |
18122 | partial_die_eq, | |
18123 | NULL, | |
18124 | &cu->comp_unit_obstack, | |
18125 | hashtab_obstack_allocate, | |
18126 | dummy_obstack_deallocate); | |
18127 | ||
8d749320 | 18128 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
18129 | |
18130 | while (1) | |
18131 | { | |
18132 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
18133 | ||
18134 | /* A NULL abbrev means the end of a series of children. */ | |
18135 | if (abbrev == NULL) | |
18136 | { | |
18137 | if (--nesting_level == 0) | |
18138 | { | |
18139 | /* PART_DIE was probably the last thing allocated on the | |
18140 | comp_unit_obstack, so we could call obstack_free | |
18141 | here. We don't do that because the waste is small, | |
18142 | and will be cleaned up when we're done with this | |
18143 | compilation unit. This way, we're also more robust | |
18144 | against other users of the comp_unit_obstack. */ | |
18145 | return first_die; | |
18146 | } | |
18147 | info_ptr += bytes_read; | |
18148 | last_die = parent_die; | |
18149 | parent_die = parent_die->die_parent; | |
18150 | continue; | |
18151 | } | |
18152 | ||
98bfdba5 PA |
18153 | /* Check for template arguments. We never save these; if |
18154 | they're seen, we just mark the parent, and go on our way. */ | |
18155 | if (parent_die != NULL | |
18156 | && cu->language == language_cplus | |
18157 | && (abbrev->tag == DW_TAG_template_type_param | |
18158 | || abbrev->tag == DW_TAG_template_value_param)) | |
18159 | { | |
18160 | parent_die->has_template_arguments = 1; | |
18161 | ||
18162 | if (!load_all) | |
18163 | { | |
18164 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18165 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18166 | continue; |
18167 | } | |
18168 | } | |
18169 | ||
0d99eb77 | 18170 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18171 | Skip their other children. */ |
18172 | if (!load_all | |
18173 | && cu->language == language_cplus | |
18174 | && parent_die != NULL | |
18175 | && parent_die->tag == DW_TAG_subprogram) | |
18176 | { | |
dee91e82 | 18177 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18178 | continue; |
18179 | } | |
18180 | ||
5afb4e99 DJ |
18181 | /* Check whether this DIE is interesting enough to save. Normally |
18182 | we would not be interested in members here, but there may be | |
18183 | later variables referencing them via DW_AT_specification (for | |
18184 | static members). */ | |
18185 | if (!load_all | |
18186 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18187 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18188 | && abbrev->tag != DW_TAG_enumerator |
18189 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 18190 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18191 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18192 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18193 | && abbrev->tag != DW_TAG_module |
95554aad | 18194 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18195 | && abbrev->tag != DW_TAG_imported_unit |
18196 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18197 | { |
18198 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18199 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18200 | continue; |
18201 | } | |
18202 | ||
dee91e82 DE |
18203 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
18204 | info_ptr); | |
72bf9492 DJ |
18205 | |
18206 | /* This two-pass algorithm for processing partial symbols has a | |
18207 | high cost in cache pressure. Thus, handle some simple cases | |
18208 | here which cover the majority of C partial symbols. DIEs | |
18209 | which neither have specification tags in them, nor could have | |
18210 | specification tags elsewhere pointing at them, can simply be | |
18211 | processed and discarded. | |
18212 | ||
18213 | This segment is also optional; scan_partial_symbols and | |
18214 | add_partial_symbol will handle these DIEs if we chain | |
18215 | them in normally. When compilers which do not emit large | |
18216 | quantities of duplicate debug information are more common, | |
18217 | this code can probably be removed. */ | |
18218 | ||
18219 | /* Any complete simple types at the top level (pretty much all | |
18220 | of them, for a language without namespaces), can be processed | |
18221 | directly. */ | |
18222 | if (parent_die == NULL | |
18223 | && part_die->has_specification == 0 | |
18224 | && part_die->is_declaration == 0 | |
d8228535 | 18225 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
18226 | || part_die->tag == DW_TAG_base_type |
18227 | || part_die->tag == DW_TAG_subrange_type)) | |
18228 | { | |
18229 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 18230 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 18231 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 18232 | &objfile->static_psymbols, |
1762568f | 18233 | 0, cu->language, objfile); |
dee91e82 | 18234 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
18235 | continue; |
18236 | } | |
18237 | ||
d8228535 JK |
18238 | /* The exception for DW_TAG_typedef with has_children above is |
18239 | a workaround of GCC PR debug/47510. In the case of this complaint | |
18240 | type_name_no_tag_or_error will error on such types later. | |
18241 | ||
18242 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18243 | it could not find the child DIEs referenced later, this is checked | |
18244 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18245 | ||
18246 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
18247 | complaint (&symfile_complaints, | |
18248 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
18249 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 18250 | to_underlying (part_die->sect_off), objfile_name (objfile)); |
d8228535 | 18251 | |
72bf9492 DJ |
18252 | /* If we're at the second level, and we're an enumerator, and |
18253 | our parent has no specification (meaning possibly lives in a | |
18254 | namespace elsewhere), then we can add the partial symbol now | |
18255 | instead of queueing it. */ | |
18256 | if (part_die->tag == DW_TAG_enumerator | |
18257 | && parent_die != NULL | |
18258 | && parent_die->die_parent == NULL | |
18259 | && parent_die->tag == DW_TAG_enumeration_type | |
18260 | && parent_die->has_specification == 0) | |
18261 | { | |
18262 | if (part_die->name == NULL) | |
3e43a32a MS |
18263 | complaint (&symfile_complaints, |
18264 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 18265 | else if (building_psymtab) |
04a679b8 | 18266 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 18267 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 18268 | cu->language == language_cplus |
bb5ed363 DE |
18269 | ? &objfile->global_psymbols |
18270 | : &objfile->static_psymbols, | |
1762568f | 18271 | 0, cu->language, objfile); |
72bf9492 | 18272 | |
dee91e82 | 18273 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
18274 | continue; |
18275 | } | |
18276 | ||
18277 | /* We'll save this DIE so link it in. */ | |
18278 | part_die->die_parent = parent_die; | |
18279 | part_die->die_sibling = NULL; | |
18280 | part_die->die_child = NULL; | |
18281 | ||
18282 | if (last_die && last_die == parent_die) | |
18283 | last_die->die_child = part_die; | |
18284 | else if (last_die) | |
18285 | last_die->die_sibling = part_die; | |
18286 | ||
18287 | last_die = part_die; | |
18288 | ||
18289 | if (first_die == NULL) | |
18290 | first_die = part_die; | |
18291 | ||
18292 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18293 | find interesting need to be in the hash table, because we | |
18294 | also have the parent/sibling/child chains; only those that we | |
18295 | might refer to by offset later during partial symbol reading. | |
18296 | ||
18297 | For now this means things that might have be the target of a | |
18298 | DW_AT_specification, DW_AT_abstract_origin, or | |
18299 | DW_AT_extension. DW_AT_extension will refer only to | |
18300 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18301 | many things under the function DIE, but we do not recurse | |
18302 | into function DIEs during partial symbol reading) and | |
18303 | possibly variables as well; DW_AT_specification refers to | |
18304 | declarations. Declarations ought to have the DW_AT_declaration | |
18305 | flag. It happens that GCC forgets to put it in sometimes, but | |
18306 | only for functions, not for types. | |
18307 | ||
18308 | Adding more things than necessary to the hash table is harmless | |
18309 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18310 | wasted time in find_partial_die, when we reread the compilation |
18311 | unit with load_all_dies set. */ | |
72bf9492 | 18312 | |
5afb4e99 | 18313 | if (load_all |
72929c62 | 18314 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18315 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18316 | || abbrev->tag == DW_TAG_variable |
18317 | || abbrev->tag == DW_TAG_namespace | |
18318 | || part_die->is_declaration) | |
18319 | { | |
18320 | void **slot; | |
18321 | ||
18322 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18323 | to_underlying (part_die->sect_off), |
18324 | INSERT); | |
72bf9492 DJ |
18325 | *slot = part_die; |
18326 | } | |
18327 | ||
8d749320 | 18328 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
18329 | |
18330 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 18331 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18332 | languages we have to, so that we can get at method physnames |
18333 | to infer fully qualified class names, for DW_AT_specification, | |
18334 | and for C++ template arguments. For C++, we also look one level | |
18335 | inside functions to find template arguments (if the name of the | |
18336 | function does not already contain the template arguments). | |
bc30ff58 JB |
18337 | |
18338 | For Ada, we need to scan the children of subprograms and lexical | |
18339 | blocks as well because Ada allows the definition of nested | |
18340 | entities that could be interesting for the debugger, such as | |
18341 | nested subprograms for instance. */ | |
72bf9492 | 18342 | if (last_die->has_children |
5afb4e99 DJ |
18343 | && (load_all |
18344 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18345 | || last_die->tag == DW_TAG_module |
72bf9492 | 18346 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18347 | || (cu->language == language_cplus |
18348 | && last_die->tag == DW_TAG_subprogram | |
18349 | && (last_die->name == NULL | |
18350 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18351 | || (cu->language != language_c |
18352 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18353 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18354 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18355 | || last_die->tag == DW_TAG_union_type)) |
18356 | || (cu->language == language_ada | |
18357 | && (last_die->tag == DW_TAG_subprogram | |
18358 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18359 | { |
18360 | nesting_level++; | |
18361 | parent_die = last_die; | |
18362 | continue; | |
18363 | } | |
18364 | ||
18365 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18366 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18367 | |
18368 | /* Back to the top, do it again. */ | |
18369 | } | |
18370 | } | |
18371 | ||
c906108c SS |
18372 | /* Read a minimal amount of information into the minimal die structure. */ |
18373 | ||
d521ce57 | 18374 | static const gdb_byte * |
dee91e82 DE |
18375 | read_partial_die (const struct die_reader_specs *reader, |
18376 | struct partial_die_info *part_die, | |
18377 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 18378 | const gdb_byte *info_ptr) |
c906108c | 18379 | { |
dee91e82 | 18380 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 18381 | struct objfile *objfile = cu->objfile; |
d521ce57 | 18382 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 18383 | unsigned int i; |
c906108c | 18384 | struct attribute attr; |
c5aa993b | 18385 | int has_low_pc_attr = 0; |
c906108c | 18386 | int has_high_pc_attr = 0; |
91da1414 | 18387 | int high_pc_relative = 0; |
c906108c | 18388 | |
72bf9492 | 18389 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 18390 | |
9c541725 | 18391 | part_die->sect_off = (sect_offset) (info_ptr - buffer); |
72bf9492 DJ |
18392 | |
18393 | info_ptr += abbrev_len; | |
18394 | ||
18395 | if (abbrev == NULL) | |
18396 | return info_ptr; | |
18397 | ||
c906108c SS |
18398 | part_die->tag = abbrev->tag; |
18399 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
18400 | |
18401 | for (i = 0; i < abbrev->num_attrs; ++i) | |
18402 | { | |
dee91e82 | 18403 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
18404 | |
18405 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18406 | partial symbol table. */ |
c906108c SS |
18407 | switch (attr.name) |
18408 | { | |
18409 | case DW_AT_name: | |
71c25dea TT |
18410 | switch (part_die->tag) |
18411 | { | |
18412 | case DW_TAG_compile_unit: | |
95554aad | 18413 | case DW_TAG_partial_unit: |
348e048f | 18414 | case DW_TAG_type_unit: |
71c25dea TT |
18415 | /* Compilation units have a DW_AT_name that is a filename, not |
18416 | a source language identifier. */ | |
18417 | case DW_TAG_enumeration_type: | |
18418 | case DW_TAG_enumerator: | |
18419 | /* These tags always have simple identifiers already; no need | |
18420 | to canonicalize them. */ | |
18421 | part_die->name = DW_STRING (&attr); | |
18422 | break; | |
18423 | default: | |
18424 | part_die->name | |
18425 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 18426 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
18427 | break; |
18428 | } | |
c906108c | 18429 | break; |
31ef98ae | 18430 | case DW_AT_linkage_name: |
c906108c | 18431 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18432 | /* Note that both forms of linkage name might appear. We |
18433 | assume they will be the same, and we only store the last | |
18434 | one we see. */ | |
94af9270 KS |
18435 | if (cu->language == language_ada) |
18436 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 18437 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
18438 | break; |
18439 | case DW_AT_low_pc: | |
18440 | has_low_pc_attr = 1; | |
31aa7e4e | 18441 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
18442 | break; |
18443 | case DW_AT_high_pc: | |
18444 | has_high_pc_attr = 1; | |
31aa7e4e JB |
18445 | part_die->highpc = attr_value_as_address (&attr); |
18446 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
18447 | high_pc_relative = 1; | |
c906108c SS |
18448 | break; |
18449 | case DW_AT_location: | |
0963b4bd | 18450 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18451 | if (attr_form_is_block (&attr)) |
18452 | { | |
95554aad | 18453 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18454 | } |
3690dd37 | 18455 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18456 | { |
4d3c2250 | 18457 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18458 | } |
18459 | else | |
18460 | { | |
4d3c2250 KB |
18461 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18462 | "partial symbol information"); | |
8e19ed76 | 18463 | } |
c906108c | 18464 | break; |
c906108c SS |
18465 | case DW_AT_external: |
18466 | part_die->is_external = DW_UNSND (&attr); | |
18467 | break; | |
18468 | case DW_AT_declaration: | |
18469 | part_die->is_declaration = DW_UNSND (&attr); | |
18470 | break; | |
18471 | case DW_AT_type: | |
18472 | part_die->has_type = 1; | |
18473 | break; | |
18474 | case DW_AT_abstract_origin: | |
18475 | case DW_AT_specification: | |
72bf9492 DJ |
18476 | case DW_AT_extension: |
18477 | part_die->has_specification = 1; | |
c764a876 | 18478 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
18479 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
18480 | || cu->per_cu->is_dwz); | |
c906108c SS |
18481 | break; |
18482 | case DW_AT_sibling: | |
18483 | /* Ignore absolute siblings, they might point outside of | |
18484 | the current compile unit. */ | |
18485 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
18486 | complaint (&symfile_complaints, |
18487 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 18488 | else |
b9502d3f | 18489 | { |
9c541725 PA |
18490 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18491 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18492 | |
18493 | if (sibling_ptr < info_ptr) | |
18494 | complaint (&symfile_complaints, | |
18495 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
18496 | else if (sibling_ptr > reader->buffer_end) |
18497 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
18498 | else |
18499 | part_die->sibling = sibling_ptr; | |
18500 | } | |
c906108c | 18501 | break; |
fa4028e9 JB |
18502 | case DW_AT_byte_size: |
18503 | part_die->has_byte_size = 1; | |
18504 | break; | |
ff908ebf AW |
18505 | case DW_AT_const_value: |
18506 | part_die->has_const_value = 1; | |
18507 | break; | |
68511cec CES |
18508 | case DW_AT_calling_convention: |
18509 | /* DWARF doesn't provide a way to identify a program's source-level | |
18510 | entry point. DW_AT_calling_convention attributes are only meant | |
18511 | to describe functions' calling conventions. | |
18512 | ||
18513 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18514 | Fortran, and before DWARF 4 DW_CC_program was the only |
18515 | piece of debugging information whose definition refers to | |
18516 | a 'main program' at all, several compilers marked Fortran | |
18517 | main programs with DW_CC_program --- even when those | |
18518 | functions use the standard calling conventions. | |
18519 | ||
18520 | Although DWARF now specifies a way to provide this | |
18521 | information, we support this practice for backward | |
18522 | compatibility. */ | |
68511cec | 18523 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e TT |
18524 | && cu->language == language_fortran) |
18525 | part_die->main_subprogram = 1; | |
68511cec | 18526 | break; |
481860b3 GB |
18527 | case DW_AT_inline: |
18528 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18529 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
18530 | part_die->may_be_inlined = 1; | |
18531 | break; | |
95554aad TT |
18532 | |
18533 | case DW_AT_import: | |
18534 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 | 18535 | { |
9c541725 | 18536 | part_die->d.sect_off = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
18537 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
18538 | || cu->per_cu->is_dwz); | |
18539 | } | |
95554aad TT |
18540 | break; |
18541 | ||
0c1b455e TT |
18542 | case DW_AT_main_subprogram: |
18543 | part_die->main_subprogram = DW_UNSND (&attr); | |
18544 | break; | |
18545 | ||
c906108c SS |
18546 | default: |
18547 | break; | |
18548 | } | |
18549 | } | |
18550 | ||
91da1414 MW |
18551 | if (high_pc_relative) |
18552 | part_die->highpc += part_die->lowpc; | |
18553 | ||
9373cf26 JK |
18554 | if (has_low_pc_attr && has_high_pc_attr) |
18555 | { | |
18556 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18557 | eliminate duplicate copies of functions and vtables and such. | |
18558 | The linker will arbitrarily choose one and discard the others. | |
18559 | The AT_*_pc values for such functions refer to local labels in | |
18560 | these sections. If the section from that file was discarded, the | |
18561 | labels are not in the output, so the relocs get a value of 0. | |
18562 | If this is a discarded function, mark the pc bounds as invalid, | |
18563 | so that GDB will ignore it. */ | |
18564 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
18565 | { | |
bb5ed363 | 18566 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
18567 | |
18568 | complaint (&symfile_complaints, | |
18569 | _("DW_AT_low_pc %s is zero " | |
18570 | "for DIE at 0x%x [in module %s]"), | |
18571 | paddress (gdbarch, part_die->lowpc), | |
9c541725 | 18572 | to_underlying (part_die->sect_off), objfile_name (objfile)); |
9373cf26 JK |
18573 | } |
18574 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
18575 | else if (part_die->lowpc >= part_die->highpc) | |
18576 | { | |
bb5ed363 | 18577 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
18578 | |
18579 | complaint (&symfile_complaints, | |
18580 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
18581 | "for DIE at 0x%x [in module %s]"), | |
18582 | paddress (gdbarch, part_die->lowpc), | |
18583 | paddress (gdbarch, part_die->highpc), | |
9c541725 PA |
18584 | to_underlying (part_die->sect_off), |
18585 | objfile_name (objfile)); | |
9373cf26 JK |
18586 | } |
18587 | else | |
18588 | part_die->has_pc_info = 1; | |
18589 | } | |
85cbf3d3 | 18590 | |
c906108c SS |
18591 | return info_ptr; |
18592 | } | |
18593 | ||
72bf9492 DJ |
18594 | /* Find a cached partial DIE at OFFSET in CU. */ |
18595 | ||
18596 | static struct partial_die_info * | |
9c541725 | 18597 | find_partial_die_in_comp_unit (sect_offset sect_off, struct dwarf2_cu *cu) |
72bf9492 DJ |
18598 | { |
18599 | struct partial_die_info *lookup_die = NULL; | |
18600 | struct partial_die_info part_die; | |
18601 | ||
9c541725 | 18602 | part_die.sect_off = sect_off; |
9a3c8263 SM |
18603 | lookup_die = ((struct partial_die_info *) |
18604 | htab_find_with_hash (cu->partial_dies, &part_die, | |
9c541725 | 18605 | to_underlying (sect_off))); |
72bf9492 | 18606 | |
72bf9492 DJ |
18607 | return lookup_die; |
18608 | } | |
18609 | ||
348e048f DE |
18610 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18611 | except in the case of .debug_types DIEs which do not reference | |
18612 | outside their CU (they do however referencing other types via | |
55f1336d | 18613 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18614 | |
18615 | static struct partial_die_info * | |
9c541725 | 18616 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18617 | { |
bb5ed363 | 18618 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
18619 | struct dwarf2_per_cu_data *per_cu = NULL; |
18620 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18621 | |
36586728 | 18622 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18623 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18624 | { |
9c541725 | 18625 | pd = find_partial_die_in_comp_unit (sect_off, cu); |
5afb4e99 DJ |
18626 | if (pd != NULL) |
18627 | return pd; | |
0d99eb77 DE |
18628 | /* We missed recording what we needed. |
18629 | Load all dies and try again. */ | |
18630 | per_cu = cu->per_cu; | |
5afb4e99 | 18631 | } |
0d99eb77 DE |
18632 | else |
18633 | { | |
18634 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18635 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18636 | { |
9c541725 PA |
18637 | error (_("Dwarf Error: Type Unit at offset 0x%x contains" |
18638 | " external reference to offset 0x%x [in module %s].\n"), | |
18639 | to_underlying (cu->header.sect_off), to_underlying (sect_off), | |
0d99eb77 DE |
18640 | bfd_get_filename (objfile->obfd)); |
18641 | } | |
9c541725 | 18642 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
36586728 | 18643 | objfile); |
72bf9492 | 18644 | |
0d99eb77 DE |
18645 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18646 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18647 | |
0d99eb77 | 18648 | per_cu->cu->last_used = 0; |
9c541725 | 18649 | pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu); |
0d99eb77 | 18650 | } |
5afb4e99 | 18651 | |
dee91e82 DE |
18652 | /* If we didn't find it, and not all dies have been loaded, |
18653 | load them all and try again. */ | |
18654 | ||
5afb4e99 DJ |
18655 | if (pd == NULL && per_cu->load_all_dies == 0) |
18656 | { | |
5afb4e99 | 18657 | per_cu->load_all_dies = 1; |
fd820528 DE |
18658 | |
18659 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18660 | THIS_CU->cu may already be in use. So we can't just free it and | |
18661 | replace its DIEs with the ones we read in. Instead, we leave those | |
18662 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18663 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18664 | set. */ | |
dee91e82 | 18665 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18666 | |
9c541725 | 18667 | pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu); |
5afb4e99 DJ |
18668 | } |
18669 | ||
18670 | if (pd == NULL) | |
18671 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
18672 | _("could not find partial DIE 0x%x " |
18673 | "in cache [from module %s]\n"), | |
9c541725 | 18674 | to_underlying (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18675 | return pd; |
72bf9492 DJ |
18676 | } |
18677 | ||
abc72ce4 DE |
18678 | /* See if we can figure out if the class lives in a namespace. We do |
18679 | this by looking for a member function; its demangled name will | |
18680 | contain namespace info, if there is any. */ | |
18681 | ||
18682 | static void | |
18683 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18684 | struct dwarf2_cu *cu) | |
18685 | { | |
18686 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18687 | what template types look like, because the demangler | |
18688 | frequently doesn't give the same name as the debug info. We | |
18689 | could fix this by only using the demangled name to get the | |
18690 | prefix (but see comment in read_structure_type). */ | |
18691 | ||
18692 | struct partial_die_info *real_pdi; | |
18693 | struct partial_die_info *child_pdi; | |
18694 | ||
18695 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18696 | we should not do this. We'll prepend the parent's fully qualified | |
18697 | name when we create the partial symbol. */ | |
18698 | ||
18699 | real_pdi = struct_pdi; | |
18700 | while (real_pdi->has_specification) | |
36586728 TT |
18701 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18702 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18703 | |
18704 | if (real_pdi->die_parent != NULL) | |
18705 | return; | |
18706 | ||
18707 | for (child_pdi = struct_pdi->die_child; | |
18708 | child_pdi != NULL; | |
18709 | child_pdi = child_pdi->die_sibling) | |
18710 | { | |
18711 | if (child_pdi->tag == DW_TAG_subprogram | |
18712 | && child_pdi->linkage_name != NULL) | |
18713 | { | |
18714 | char *actual_class_name | |
18715 | = language_class_name_from_physname (cu->language_defn, | |
18716 | child_pdi->linkage_name); | |
18717 | if (actual_class_name != NULL) | |
18718 | { | |
18719 | struct_pdi->name | |
224c3ddb SM |
18720 | = ((const char *) |
18721 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
18722 | actual_class_name, | |
18723 | strlen (actual_class_name))); | |
abc72ce4 DE |
18724 | xfree (actual_class_name); |
18725 | } | |
18726 | break; | |
18727 | } | |
18728 | } | |
18729 | } | |
18730 | ||
72bf9492 DJ |
18731 | /* Adjust PART_DIE before generating a symbol for it. This function |
18732 | may set the is_external flag or change the DIE's name. */ | |
18733 | ||
18734 | static void | |
18735 | fixup_partial_die (struct partial_die_info *part_die, | |
18736 | struct dwarf2_cu *cu) | |
18737 | { | |
abc72ce4 DE |
18738 | /* Once we've fixed up a die, there's no point in doing so again. |
18739 | This also avoids a memory leak if we were to call | |
18740 | guess_partial_die_structure_name multiple times. */ | |
18741 | if (part_die->fixup_called) | |
18742 | return; | |
18743 | ||
72bf9492 DJ |
18744 | /* If we found a reference attribute and the DIE has no name, try |
18745 | to find a name in the referred to DIE. */ | |
18746 | ||
18747 | if (part_die->name == NULL && part_die->has_specification) | |
18748 | { | |
18749 | struct partial_die_info *spec_die; | |
72bf9492 | 18750 | |
36586728 TT |
18751 | spec_die = find_partial_die (part_die->spec_offset, |
18752 | part_die->spec_is_dwz, cu); | |
72bf9492 | 18753 | |
10b3939b | 18754 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
18755 | |
18756 | if (spec_die->name) | |
18757 | { | |
18758 | part_die->name = spec_die->name; | |
18759 | ||
18760 | /* Copy DW_AT_external attribute if it is set. */ | |
18761 | if (spec_die->is_external) | |
18762 | part_die->is_external = spec_die->is_external; | |
18763 | } | |
18764 | } | |
18765 | ||
18766 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
18767 | |
18768 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 18769 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 18770 | |
abc72ce4 DE |
18771 | /* If there is no parent die to provide a namespace, and there are |
18772 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18773 | name. */ |
abc72ce4 | 18774 | if (cu->language == language_cplus |
8b70b953 | 18775 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
18776 | && part_die->die_parent == NULL |
18777 | && part_die->has_children | |
18778 | && (part_die->tag == DW_TAG_class_type | |
18779 | || part_die->tag == DW_TAG_structure_type | |
18780 | || part_die->tag == DW_TAG_union_type)) | |
18781 | guess_partial_die_structure_name (part_die, cu); | |
18782 | ||
53832f31 TT |
18783 | /* GCC might emit a nameless struct or union that has a linkage |
18784 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18785 | if (part_die->name == NULL | |
96408a79 SA |
18786 | && (part_die->tag == DW_TAG_class_type |
18787 | || part_die->tag == DW_TAG_interface_type | |
18788 | || part_die->tag == DW_TAG_structure_type | |
18789 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
18790 | && part_die->linkage_name != NULL) |
18791 | { | |
18792 | char *demangled; | |
18793 | ||
8de20a37 | 18794 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
18795 | if (demangled) |
18796 | { | |
96408a79 SA |
18797 | const char *base; |
18798 | ||
18799 | /* Strip any leading namespaces/classes, keep only the base name. | |
18800 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18801 | base = strrchr (demangled, ':'); | |
18802 | if (base && base > demangled && base[-1] == ':') | |
18803 | base++; | |
18804 | else | |
18805 | base = demangled; | |
18806 | ||
34a68019 | 18807 | part_die->name |
224c3ddb SM |
18808 | = ((const char *) |
18809 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
18810 | base, strlen (base))); | |
53832f31 TT |
18811 | xfree (demangled); |
18812 | } | |
18813 | } | |
18814 | ||
abc72ce4 | 18815 | part_die->fixup_called = 1; |
72bf9492 DJ |
18816 | } |
18817 | ||
a8329558 | 18818 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18819 | |
d521ce57 | 18820 | static const gdb_byte * |
dee91e82 DE |
18821 | read_attribute_value (const struct die_reader_specs *reader, |
18822 | struct attribute *attr, unsigned form, | |
43988095 | 18823 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 18824 | { |
dee91e82 | 18825 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
18826 | struct objfile *objfile = cu->objfile; |
18827 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 18828 | bfd *abfd = reader->abfd; |
e7c27a73 | 18829 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18830 | unsigned int bytes_read; |
18831 | struct dwarf_block *blk; | |
18832 | ||
aead7601 | 18833 | attr->form = (enum dwarf_form) form; |
a8329558 | 18834 | switch (form) |
c906108c | 18835 | { |
c906108c | 18836 | case DW_FORM_ref_addr: |
ae411497 | 18837 | if (cu->header.version == 2) |
4568ecf9 | 18838 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 18839 | else |
4568ecf9 DE |
18840 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
18841 | &cu->header, &bytes_read); | |
ae411497 TT |
18842 | info_ptr += bytes_read; |
18843 | break; | |
36586728 TT |
18844 | case DW_FORM_GNU_ref_alt: |
18845 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18846 | info_ptr += bytes_read; | |
18847 | break; | |
ae411497 | 18848 | case DW_FORM_addr: |
e7c27a73 | 18849 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 18850 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18851 | info_ptr += bytes_read; |
c906108c SS |
18852 | break; |
18853 | case DW_FORM_block2: | |
7b5a2f43 | 18854 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18855 | blk->size = read_2_bytes (abfd, info_ptr); |
18856 | info_ptr += 2; | |
18857 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18858 | info_ptr += blk->size; | |
18859 | DW_BLOCK (attr) = blk; | |
18860 | break; | |
18861 | case DW_FORM_block4: | |
7b5a2f43 | 18862 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18863 | blk->size = read_4_bytes (abfd, info_ptr); |
18864 | info_ptr += 4; | |
18865 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18866 | info_ptr += blk->size; | |
18867 | DW_BLOCK (attr) = blk; | |
18868 | break; | |
18869 | case DW_FORM_data2: | |
18870 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18871 | info_ptr += 2; | |
18872 | break; | |
18873 | case DW_FORM_data4: | |
18874 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18875 | info_ptr += 4; | |
18876 | break; | |
18877 | case DW_FORM_data8: | |
18878 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18879 | info_ptr += 8; | |
18880 | break; | |
0224619f JK |
18881 | case DW_FORM_data16: |
18882 | blk = dwarf_alloc_block (cu); | |
18883 | blk->size = 16; | |
18884 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18885 | info_ptr += 16; | |
18886 | DW_BLOCK (attr) = blk; | |
18887 | break; | |
2dc7f7b3 TT |
18888 | case DW_FORM_sec_offset: |
18889 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18890 | info_ptr += bytes_read; | |
18891 | break; | |
c906108c | 18892 | case DW_FORM_string: |
9b1c24c8 | 18893 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18894 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18895 | info_ptr += bytes_read; |
18896 | break; | |
4bdf3d34 | 18897 | case DW_FORM_strp: |
36586728 TT |
18898 | if (!cu->per_cu->is_dwz) |
18899 | { | |
18900 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
18901 | &bytes_read); | |
18902 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18903 | info_ptr += bytes_read; | |
18904 | break; | |
18905 | } | |
18906 | /* FALLTHROUGH */ | |
43988095 JK |
18907 | case DW_FORM_line_strp: |
18908 | if (!cu->per_cu->is_dwz) | |
18909 | { | |
18910 | DW_STRING (attr) = read_indirect_line_string (abfd, info_ptr, | |
18911 | cu_header, &bytes_read); | |
18912 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18913 | info_ptr += bytes_read; | |
18914 | break; | |
18915 | } | |
18916 | /* FALLTHROUGH */ | |
36586728 TT |
18917 | case DW_FORM_GNU_strp_alt: |
18918 | { | |
18919 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18920 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
18921 | &bytes_read); | |
18922 | ||
18923 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
18924 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18925 | info_ptr += bytes_read; | |
18926 | } | |
4bdf3d34 | 18927 | break; |
2dc7f7b3 | 18928 | case DW_FORM_exprloc: |
c906108c | 18929 | case DW_FORM_block: |
7b5a2f43 | 18930 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18931 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18932 | info_ptr += bytes_read; | |
18933 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18934 | info_ptr += blk->size; | |
18935 | DW_BLOCK (attr) = blk; | |
18936 | break; | |
18937 | case DW_FORM_block1: | |
7b5a2f43 | 18938 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18939 | blk->size = read_1_byte (abfd, info_ptr); |
18940 | info_ptr += 1; | |
18941 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18942 | info_ptr += blk->size; | |
18943 | DW_BLOCK (attr) = blk; | |
18944 | break; | |
18945 | case DW_FORM_data1: | |
18946 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18947 | info_ptr += 1; | |
18948 | break; | |
18949 | case DW_FORM_flag: | |
18950 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18951 | info_ptr += 1; | |
18952 | break; | |
2dc7f7b3 TT |
18953 | case DW_FORM_flag_present: |
18954 | DW_UNSND (attr) = 1; | |
18955 | break; | |
c906108c SS |
18956 | case DW_FORM_sdata: |
18957 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18958 | info_ptr += bytes_read; | |
18959 | break; | |
18960 | case DW_FORM_udata: | |
18961 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18962 | info_ptr += bytes_read; | |
18963 | break; | |
18964 | case DW_FORM_ref1: | |
9c541725 | 18965 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18966 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
18967 | info_ptr += 1; |
18968 | break; | |
18969 | case DW_FORM_ref2: | |
9c541725 | 18970 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18971 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
18972 | info_ptr += 2; |
18973 | break; | |
18974 | case DW_FORM_ref4: | |
9c541725 | 18975 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18976 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
18977 | info_ptr += 4; |
18978 | break; | |
613e1657 | 18979 | case DW_FORM_ref8: |
9c541725 | 18980 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18981 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
18982 | info_ptr += 8; |
18983 | break; | |
55f1336d | 18984 | case DW_FORM_ref_sig8: |
ac9ec31b | 18985 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
18986 | info_ptr += 8; |
18987 | break; | |
c906108c | 18988 | case DW_FORM_ref_udata: |
9c541725 | 18989 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18990 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
18991 | info_ptr += bytes_read; |
18992 | break; | |
c906108c | 18993 | case DW_FORM_indirect: |
a8329558 KW |
18994 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18995 | info_ptr += bytes_read; | |
43988095 JK |
18996 | if (form == DW_FORM_implicit_const) |
18997 | { | |
18998 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18999 | info_ptr += bytes_read; | |
19000 | } | |
19001 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19002 | info_ptr); | |
19003 | break; | |
19004 | case DW_FORM_implicit_const: | |
19005 | DW_SND (attr) = implicit_const; | |
a8329558 | 19006 | break; |
3019eac3 DE |
19007 | case DW_FORM_GNU_addr_index: |
19008 | if (reader->dwo_file == NULL) | |
19009 | { | |
19010 | /* For now flag a hard error. | |
19011 | Later we can turn this into a complaint. */ | |
19012 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19013 | dwarf_form_name (form), | |
19014 | bfd_get_filename (abfd)); | |
19015 | } | |
19016 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19017 | info_ptr += bytes_read; | |
19018 | break; | |
19019 | case DW_FORM_GNU_str_index: | |
19020 | if (reader->dwo_file == NULL) | |
19021 | { | |
19022 | /* For now flag a hard error. | |
19023 | Later we can turn this into a complaint if warranted. */ | |
19024 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19025 | dwarf_form_name (form), | |
19026 | bfd_get_filename (abfd)); | |
19027 | } | |
19028 | { | |
19029 | ULONGEST str_index = | |
19030 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19031 | ||
342587c4 | 19032 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19033 | DW_STRING_IS_CANONICAL (attr) = 0; |
19034 | info_ptr += bytes_read; | |
19035 | } | |
19036 | break; | |
c906108c | 19037 | default: |
8a3fe4f8 | 19038 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19039 | dwarf_form_name (form), |
19040 | bfd_get_filename (abfd)); | |
c906108c | 19041 | } |
28e94949 | 19042 | |
36586728 | 19043 | /* Super hack. */ |
7771576e | 19044 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19045 | attr->form = DW_FORM_GNU_ref_alt; |
19046 | ||
28e94949 JB |
19047 | /* We have seen instances where the compiler tried to emit a byte |
19048 | size attribute of -1 which ended up being encoded as an unsigned | |
19049 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19050 | an object of this size seems pretty unlikely so we can relatively | |
19051 | safely treat these cases as if the size attribute was invalid and | |
19052 | treat them as zero by default. */ | |
19053 | if (attr->name == DW_AT_byte_size | |
19054 | && form == DW_FORM_data4 | |
19055 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19056 | { |
19057 | complaint | |
19058 | (&symfile_complaints, | |
43bbcdc2 PH |
19059 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
19060 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
19061 | DW_UNSND (attr) = 0; |
19062 | } | |
28e94949 | 19063 | |
c906108c SS |
19064 | return info_ptr; |
19065 | } | |
19066 | ||
a8329558 KW |
19067 | /* Read an attribute described by an abbreviated attribute. */ |
19068 | ||
d521ce57 | 19069 | static const gdb_byte * |
dee91e82 DE |
19070 | read_attribute (const struct die_reader_specs *reader, |
19071 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19072 | const gdb_byte *info_ptr) |
a8329558 KW |
19073 | { |
19074 | attr->name = abbrev->name; | |
43988095 JK |
19075 | return read_attribute_value (reader, attr, abbrev->form, |
19076 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19077 | } |
19078 | ||
0963b4bd | 19079 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19080 | |
19081 | static unsigned int | |
a1855c1d | 19082 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19083 | { |
fe1b8b76 | 19084 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19085 | } |
19086 | ||
19087 | static int | |
a1855c1d | 19088 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19089 | { |
fe1b8b76 | 19090 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19091 | } |
19092 | ||
19093 | static unsigned int | |
a1855c1d | 19094 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19095 | { |
fe1b8b76 | 19096 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19097 | } |
19098 | ||
21ae7a4d | 19099 | static int |
a1855c1d | 19100 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19101 | { |
19102 | return bfd_get_signed_16 (abfd, buf); | |
19103 | } | |
19104 | ||
c906108c | 19105 | static unsigned int |
a1855c1d | 19106 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19107 | { |
fe1b8b76 | 19108 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19109 | } |
19110 | ||
21ae7a4d | 19111 | static int |
a1855c1d | 19112 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19113 | { |
19114 | return bfd_get_signed_32 (abfd, buf); | |
19115 | } | |
19116 | ||
93311388 | 19117 | static ULONGEST |
a1855c1d | 19118 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19119 | { |
fe1b8b76 | 19120 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19121 | } |
19122 | ||
19123 | static CORE_ADDR | |
d521ce57 | 19124 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19125 | unsigned int *bytes_read) |
c906108c | 19126 | { |
e7c27a73 | 19127 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19128 | CORE_ADDR retval = 0; |
19129 | ||
107d2387 | 19130 | if (cu_header->signed_addr_p) |
c906108c | 19131 | { |
107d2387 AC |
19132 | switch (cu_header->addr_size) |
19133 | { | |
19134 | case 2: | |
fe1b8b76 | 19135 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19136 | break; |
19137 | case 4: | |
fe1b8b76 | 19138 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19139 | break; |
19140 | case 8: | |
fe1b8b76 | 19141 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19142 | break; |
19143 | default: | |
8e65ff28 | 19144 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19145 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19146 | bfd_get_filename (abfd)); |
107d2387 AC |
19147 | } |
19148 | } | |
19149 | else | |
19150 | { | |
19151 | switch (cu_header->addr_size) | |
19152 | { | |
19153 | case 2: | |
fe1b8b76 | 19154 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19155 | break; |
19156 | case 4: | |
fe1b8b76 | 19157 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19158 | break; |
19159 | case 8: | |
fe1b8b76 | 19160 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19161 | break; |
19162 | default: | |
8e65ff28 | 19163 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19164 | _("read_address: bad switch, " |
19165 | "unsigned [in module %s]"), | |
659b0389 | 19166 | bfd_get_filename (abfd)); |
107d2387 | 19167 | } |
c906108c | 19168 | } |
64367e0a | 19169 | |
107d2387 AC |
19170 | *bytes_read = cu_header->addr_size; |
19171 | return retval; | |
c906108c SS |
19172 | } |
19173 | ||
f7ef9339 | 19174 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19175 | specification allows the initial length to take up either 4 bytes |
19176 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19177 | bytes describe the length and all offsets will be 8 bytes in length | |
19178 | instead of 4. | |
19179 | ||
f7ef9339 KB |
19180 | An older, non-standard 64-bit format is also handled by this |
19181 | function. The older format in question stores the initial length | |
19182 | as an 8-byte quantity without an escape value. Lengths greater | |
19183 | than 2^32 aren't very common which means that the initial 4 bytes | |
19184 | is almost always zero. Since a length value of zero doesn't make | |
19185 | sense for the 32-bit format, this initial zero can be considered to | |
19186 | be an escape value which indicates the presence of the older 64-bit | |
19187 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19188 | greater than 4GB. If it becomes necessary to handle lengths |
19189 | somewhat larger than 4GB, we could allow other small values (such | |
19190 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19191 | escape values indicating the presence of the old format. | |
f7ef9339 | 19192 | |
917c78fc MK |
19193 | The value returned via bytes_read should be used to increment the |
19194 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19195 | |
613e1657 KB |
19196 | [ Note: read_initial_length() and read_offset() are based on the |
19197 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19198 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19199 | from: |
19200 | ||
f7ef9339 | 19201 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19202 | |
613e1657 KB |
19203 | This document is only a draft and is subject to change. (So beware.) |
19204 | ||
f7ef9339 | 19205 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19206 | determined empirically by examining 64-bit ELF files produced by |
19207 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19208 | |
19209 | - Kevin, July 16, 2002 | |
613e1657 KB |
19210 | ] */ |
19211 | ||
19212 | static LONGEST | |
d521ce57 | 19213 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19214 | { |
fe1b8b76 | 19215 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19216 | |
dd373385 | 19217 | if (length == 0xffffffff) |
613e1657 | 19218 | { |
fe1b8b76 | 19219 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19220 | *bytes_read = 12; |
613e1657 | 19221 | } |
dd373385 | 19222 | else if (length == 0) |
f7ef9339 | 19223 | { |
dd373385 | 19224 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19225 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19226 | *bytes_read = 8; |
f7ef9339 | 19227 | } |
613e1657 KB |
19228 | else |
19229 | { | |
19230 | *bytes_read = 4; | |
613e1657 KB |
19231 | } |
19232 | ||
c764a876 DE |
19233 | return length; |
19234 | } | |
dd373385 | 19235 | |
c764a876 DE |
19236 | /* Cover function for read_initial_length. |
19237 | Returns the length of the object at BUF, and stores the size of the | |
19238 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19239 | *OFFSET_SIZE. | |
19240 | If the initial length size is not equivalent to that specified in | |
19241 | CU_HEADER then issue a complaint. | |
19242 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19243 | |
c764a876 | 19244 | static LONGEST |
d521ce57 | 19245 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19246 | const struct comp_unit_head *cu_header, |
19247 | unsigned int *bytes_read, | |
19248 | unsigned int *offset_size) | |
19249 | { | |
19250 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19251 | ||
19252 | gdb_assert (cu_header->initial_length_size == 4 | |
19253 | || cu_header->initial_length_size == 8 | |
19254 | || cu_header->initial_length_size == 12); | |
19255 | ||
19256 | if (cu_header->initial_length_size != *bytes_read) | |
19257 | complaint (&symfile_complaints, | |
19258 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 19259 | |
c764a876 | 19260 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19261 | return length; |
613e1657 KB |
19262 | } |
19263 | ||
19264 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19265 | given by cu_header->offset_size. */ |
613e1657 KB |
19266 | |
19267 | static LONGEST | |
d521ce57 TT |
19268 | read_offset (bfd *abfd, const gdb_byte *buf, |
19269 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19270 | unsigned int *bytes_read) |
c764a876 DE |
19271 | { |
19272 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19273 | |
c764a876 DE |
19274 | *bytes_read = cu_header->offset_size; |
19275 | return offset; | |
19276 | } | |
19277 | ||
19278 | /* Read an offset from the data stream. */ | |
19279 | ||
19280 | static LONGEST | |
d521ce57 | 19281 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19282 | { |
19283 | LONGEST retval = 0; | |
19284 | ||
c764a876 | 19285 | switch (offset_size) |
613e1657 KB |
19286 | { |
19287 | case 4: | |
fe1b8b76 | 19288 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19289 | break; |
19290 | case 8: | |
fe1b8b76 | 19291 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19292 | break; |
19293 | default: | |
8e65ff28 | 19294 | internal_error (__FILE__, __LINE__, |
c764a876 | 19295 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19296 | bfd_get_filename (abfd)); |
613e1657 KB |
19297 | } |
19298 | ||
917c78fc | 19299 | return retval; |
613e1657 KB |
19300 | } |
19301 | ||
d521ce57 TT |
19302 | static const gdb_byte * |
19303 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19304 | { |
19305 | /* If the size of a host char is 8 bits, we can return a pointer | |
19306 | to the buffer, otherwise we have to copy the data to a buffer | |
19307 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19308 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19309 | return buf; |
c906108c SS |
19310 | } |
19311 | ||
d521ce57 TT |
19312 | static const char * |
19313 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19314 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19315 | { |
19316 | /* If the size of a host char is 8 bits, we can return a pointer | |
19317 | to the string, otherwise we have to copy the string to a buffer | |
19318 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19319 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19320 | if (*buf == '\0') |
19321 | { | |
19322 | *bytes_read_ptr = 1; | |
19323 | return NULL; | |
19324 | } | |
d521ce57 TT |
19325 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19326 | return (const char *) buf; | |
4bdf3d34 JJ |
19327 | } |
19328 | ||
43988095 JK |
19329 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19330 | reporting strings FORM_NAME and SECT_NAME. */ | |
19331 | ||
d521ce57 | 19332 | static const char * |
43988095 JK |
19333 | read_indirect_string_at_offset_from (bfd *abfd, LONGEST str_offset, |
19334 | struct dwarf2_section_info *sect, | |
19335 | const char *form_name, | |
19336 | const char *sect_name) | |
19337 | { | |
19338 | dwarf2_read_section (dwarf2_per_objfile->objfile, sect); | |
19339 | if (sect->buffer == NULL) | |
19340 | error (_("%s used without %s section [in module %s]"), | |
19341 | form_name, sect_name, bfd_get_filename (abfd)); | |
19342 | if (str_offset >= sect->size) | |
19343 | error (_("%s pointing outside of %s section [in module %s]"), | |
19344 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19345 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19346 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19347 | return NULL; |
43988095 JK |
19348 | return (const char *) (sect->buffer + str_offset); |
19349 | } | |
19350 | ||
19351 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19352 | ||
19353 | static const char * | |
19354 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) | |
19355 | { | |
19356 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
19357 | &dwarf2_per_objfile->str, | |
19358 | "DW_FORM_strp", ".debug_str"); | |
19359 | } | |
19360 | ||
19361 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19362 | ||
19363 | static const char * | |
19364 | read_indirect_line_string_at_offset (bfd *abfd, LONGEST str_offset) | |
19365 | { | |
19366 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
19367 | &dwarf2_per_objfile->line_str, | |
19368 | "DW_FORM_line_strp", | |
19369 | ".debug_line_str"); | |
c906108c SS |
19370 | } |
19371 | ||
36586728 TT |
19372 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19373 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19374 | the string consists of a single NUL byte, return NULL; otherwise | |
19375 | return a pointer to the string. */ | |
19376 | ||
d521ce57 | 19377 | static const char * |
36586728 TT |
19378 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
19379 | { | |
19380 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
19381 | ||
19382 | if (dwz->str.buffer == NULL) | |
19383 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19384 | "section [in module %s]"), | |
19385 | bfd_get_filename (dwz->dwz_bfd)); | |
19386 | if (str_offset >= dwz->str.size) | |
19387 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19388 | ".debug_str section [in module %s]"), | |
19389 | bfd_get_filename (dwz->dwz_bfd)); | |
19390 | gdb_assert (HOST_CHAR_BIT == 8); | |
19391 | if (dwz->str.buffer[str_offset] == '\0') | |
19392 | return NULL; | |
d521ce57 | 19393 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19394 | } |
19395 | ||
43988095 JK |
19396 | /* Return pointer to string at .debug_str offset as read from BUF. |
19397 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19398 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19399 | ||
d521ce57 TT |
19400 | static const char * |
19401 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
19402 | const struct comp_unit_head *cu_header, |
19403 | unsigned int *bytes_read_ptr) | |
19404 | { | |
19405 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19406 | ||
19407 | return read_indirect_string_at_offset (abfd, str_offset); | |
19408 | } | |
19409 | ||
43988095 JK |
19410 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19411 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19412 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19413 | ||
19414 | static const char * | |
19415 | read_indirect_line_string (bfd *abfd, const gdb_byte *buf, | |
19416 | const struct comp_unit_head *cu_header, | |
19417 | unsigned int *bytes_read_ptr) | |
19418 | { | |
19419 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19420 | ||
19421 | return read_indirect_line_string_at_offset (abfd, str_offset); | |
19422 | } | |
19423 | ||
19424 | ULONGEST | |
d521ce57 | 19425 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19426 | unsigned int *bytes_read_ptr) |
c906108c | 19427 | { |
12df843f | 19428 | ULONGEST result; |
ce5d95e1 | 19429 | unsigned int num_read; |
870f88f7 | 19430 | int shift; |
c906108c SS |
19431 | unsigned char byte; |
19432 | ||
19433 | result = 0; | |
19434 | shift = 0; | |
19435 | num_read = 0; | |
c906108c SS |
19436 | while (1) |
19437 | { | |
fe1b8b76 | 19438 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19439 | buf++; |
19440 | num_read++; | |
12df843f | 19441 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19442 | if ((byte & 128) == 0) |
19443 | { | |
19444 | break; | |
19445 | } | |
19446 | shift += 7; | |
19447 | } | |
19448 | *bytes_read_ptr = num_read; | |
19449 | return result; | |
19450 | } | |
19451 | ||
12df843f | 19452 | static LONGEST |
d521ce57 TT |
19453 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19454 | unsigned int *bytes_read_ptr) | |
c906108c | 19455 | { |
12df843f | 19456 | LONGEST result; |
870f88f7 | 19457 | int shift, num_read; |
c906108c SS |
19458 | unsigned char byte; |
19459 | ||
19460 | result = 0; | |
19461 | shift = 0; | |
c906108c | 19462 | num_read = 0; |
c906108c SS |
19463 | while (1) |
19464 | { | |
fe1b8b76 | 19465 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19466 | buf++; |
19467 | num_read++; | |
12df843f | 19468 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19469 | shift += 7; |
19470 | if ((byte & 128) == 0) | |
19471 | { | |
19472 | break; | |
19473 | } | |
19474 | } | |
77e0b926 | 19475 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19476 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19477 | *bytes_read_ptr = num_read; |
19478 | return result; | |
19479 | } | |
19480 | ||
3019eac3 DE |
19481 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19482 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19483 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19484 | ||
19485 | static CORE_ADDR | |
19486 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
19487 | { | |
19488 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19489 | bfd *abfd = objfile->obfd; | |
19490 | const gdb_byte *info_ptr; | |
19491 | ||
19492 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19493 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19494 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19495 | objfile_name (objfile)); |
3019eac3 DE |
19496 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19497 | error (_("DW_FORM_addr_index pointing outside of " | |
19498 | ".debug_addr section [in module %s]"), | |
4262abfb | 19499 | objfile_name (objfile)); |
3019eac3 DE |
19500 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19501 | + addr_base + addr_index * addr_size); | |
19502 | if (addr_size == 4) | |
19503 | return bfd_get_32 (abfd, info_ptr); | |
19504 | else | |
19505 | return bfd_get_64 (abfd, info_ptr); | |
19506 | } | |
19507 | ||
19508 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19509 | ||
19510 | static CORE_ADDR | |
19511 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19512 | { | |
19513 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
19514 | } | |
19515 | ||
19516 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19517 | ||
19518 | static CORE_ADDR | |
d521ce57 | 19519 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19520 | unsigned int *bytes_read) |
19521 | { | |
19522 | bfd *abfd = cu->objfile->obfd; | |
19523 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
19524 | ||
19525 | return read_addr_index (cu, addr_index); | |
19526 | } | |
19527 | ||
19528 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19529 | back to dwarf2_read_addr_index. */ | |
19530 | ||
19531 | struct dwarf2_read_addr_index_data | |
19532 | { | |
19533 | ULONGEST addr_base; | |
19534 | int addr_size; | |
19535 | }; | |
19536 | ||
19537 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19538 | ||
19539 | static void | |
19540 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19541 | const gdb_byte *info_ptr, |
3019eac3 DE |
19542 | struct die_info *comp_unit_die, |
19543 | int has_children, | |
19544 | void *data) | |
19545 | { | |
19546 | struct dwarf2_cu *cu = reader->cu; | |
19547 | struct dwarf2_read_addr_index_data *aidata = | |
19548 | (struct dwarf2_read_addr_index_data *) data; | |
19549 | ||
19550 | aidata->addr_base = cu->addr_base; | |
19551 | aidata->addr_size = cu->header.addr_size; | |
19552 | } | |
19553 | ||
19554 | /* Given an index in .debug_addr, fetch the value. | |
19555 | NOTE: This can be called during dwarf expression evaluation, | |
19556 | long after the debug information has been read, and thus per_cu->cu | |
19557 | may no longer exist. */ | |
19558 | ||
19559 | CORE_ADDR | |
19560 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19561 | unsigned int addr_index) | |
19562 | { | |
19563 | struct objfile *objfile = per_cu->objfile; | |
19564 | struct dwarf2_cu *cu = per_cu->cu; | |
19565 | ULONGEST addr_base; | |
19566 | int addr_size; | |
19567 | ||
19568 | /* This is intended to be called from outside this file. */ | |
19569 | dw2_setup (objfile); | |
19570 | ||
19571 | /* We need addr_base and addr_size. | |
19572 | If we don't have PER_CU->cu, we have to get it. | |
19573 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19574 | which at this point doesn't seem justified: it's not clear how frequently | |
19575 | it would get used and it would increase the size of every PER_CU. | |
19576 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19577 | so we're not in uncharted territory here. | |
19578 | Alas we need to be a bit more complicated as addr_base is contained | |
19579 | in the DIE. | |
19580 | ||
19581 | We don't need to read the entire CU(/TU). | |
19582 | We just need the header and top level die. | |
a1b64ce1 | 19583 | |
3019eac3 | 19584 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19585 | For now we skip this optimization. */ |
3019eac3 DE |
19586 | |
19587 | if (cu != NULL) | |
19588 | { | |
19589 | addr_base = cu->addr_base; | |
19590 | addr_size = cu->header.addr_size; | |
19591 | } | |
19592 | else | |
19593 | { | |
19594 | struct dwarf2_read_addr_index_data aidata; | |
19595 | ||
a1b64ce1 DE |
19596 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19597 | we need addr_base. */ | |
19598 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
19599 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
19600 | addr_base = aidata.addr_base; |
19601 | addr_size = aidata.addr_size; | |
19602 | } | |
19603 | ||
19604 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
19605 | } | |
19606 | ||
57d63ce2 DE |
19607 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19608 | This is only used by the Fission support. */ | |
3019eac3 | 19609 | |
d521ce57 | 19610 | static const char * |
342587c4 | 19611 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
19612 | { |
19613 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 19614 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19615 | bfd *abfd = objfile->obfd; |
342587c4 | 19616 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
19617 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19618 | struct dwarf2_section_info *str_offsets_section = | |
19619 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19620 | const gdb_byte *info_ptr; |
3019eac3 | 19621 | ULONGEST str_offset; |
57d63ce2 | 19622 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19623 | |
73869dc2 DE |
19624 | dwarf2_read_section (objfile, str_section); |
19625 | dwarf2_read_section (objfile, str_offsets_section); | |
19626 | if (str_section->buffer == NULL) | |
57d63ce2 | 19627 | error (_("%s used without .debug_str.dwo section" |
9c541725 PA |
19628 | " in CU at offset 0x%x [in module %s]"), |
19629 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19630 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19631 | error (_("%s used without .debug_str_offsets.dwo section" |
9c541725 PA |
19632 | " in CU at offset 0x%x [in module %s]"), |
19633 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19634 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19635 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9c541725 PA |
19636 | " section in CU at offset 0x%x [in module %s]"), |
19637 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19638 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19639 | + str_index * cu->header.offset_size); |
19640 | if (cu->header.offset_size == 4) | |
19641 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19642 | else | |
19643 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19644 | if (str_offset >= str_section->size) |
57d63ce2 | 19645 | error (_("Offset from %s pointing outside of" |
9c541725 PA |
19646 | " .debug_str.dwo section in CU at offset 0x%x [in module %s]"), |
19647 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 19648 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19649 | } |
19650 | ||
3019eac3 DE |
19651 | /* Return the length of an LEB128 number in BUF. */ |
19652 | ||
19653 | static int | |
19654 | leb128_size (const gdb_byte *buf) | |
19655 | { | |
19656 | const gdb_byte *begin = buf; | |
19657 | gdb_byte byte; | |
19658 | ||
19659 | while (1) | |
19660 | { | |
19661 | byte = *buf++; | |
19662 | if ((byte & 128) == 0) | |
19663 | return buf - begin; | |
19664 | } | |
19665 | } | |
19666 | ||
c906108c | 19667 | static void |
e142c38c | 19668 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19669 | { |
19670 | switch (lang) | |
19671 | { | |
19672 | case DW_LANG_C89: | |
76bee0cc | 19673 | case DW_LANG_C99: |
0cfd832f | 19674 | case DW_LANG_C11: |
c906108c | 19675 | case DW_LANG_C: |
d1be3247 | 19676 | case DW_LANG_UPC: |
e142c38c | 19677 | cu->language = language_c; |
c906108c | 19678 | break; |
9c37b5ae | 19679 | case DW_LANG_Java: |
c906108c | 19680 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19681 | case DW_LANG_C_plus_plus_11: |
19682 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19683 | cu->language = language_cplus; |
c906108c | 19684 | break; |
6aecb9c2 JB |
19685 | case DW_LANG_D: |
19686 | cu->language = language_d; | |
19687 | break; | |
c906108c SS |
19688 | case DW_LANG_Fortran77: |
19689 | case DW_LANG_Fortran90: | |
b21b22e0 | 19690 | case DW_LANG_Fortran95: |
f7de9aab MW |
19691 | case DW_LANG_Fortran03: |
19692 | case DW_LANG_Fortran08: | |
e142c38c | 19693 | cu->language = language_fortran; |
c906108c | 19694 | break; |
a766d390 DE |
19695 | case DW_LANG_Go: |
19696 | cu->language = language_go; | |
19697 | break; | |
c906108c | 19698 | case DW_LANG_Mips_Assembler: |
e142c38c | 19699 | cu->language = language_asm; |
c906108c SS |
19700 | break; |
19701 | case DW_LANG_Ada83: | |
8aaf0b47 | 19702 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19703 | cu->language = language_ada; |
19704 | break; | |
72019c9c GM |
19705 | case DW_LANG_Modula2: |
19706 | cu->language = language_m2; | |
19707 | break; | |
fe8e67fd PM |
19708 | case DW_LANG_Pascal83: |
19709 | cu->language = language_pascal; | |
19710 | break; | |
22566fbd DJ |
19711 | case DW_LANG_ObjC: |
19712 | cu->language = language_objc; | |
19713 | break; | |
c44af4eb TT |
19714 | case DW_LANG_Rust: |
19715 | case DW_LANG_Rust_old: | |
19716 | cu->language = language_rust; | |
19717 | break; | |
c906108c SS |
19718 | case DW_LANG_Cobol74: |
19719 | case DW_LANG_Cobol85: | |
c906108c | 19720 | default: |
e142c38c | 19721 | cu->language = language_minimal; |
c906108c SS |
19722 | break; |
19723 | } | |
e142c38c | 19724 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19725 | } |
19726 | ||
19727 | /* Return the named attribute or NULL if not there. */ | |
19728 | ||
19729 | static struct attribute * | |
e142c38c | 19730 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19731 | { |
a48e046c | 19732 | for (;;) |
c906108c | 19733 | { |
a48e046c TT |
19734 | unsigned int i; |
19735 | struct attribute *spec = NULL; | |
19736 | ||
19737 | for (i = 0; i < die->num_attrs; ++i) | |
19738 | { | |
19739 | if (die->attrs[i].name == name) | |
19740 | return &die->attrs[i]; | |
19741 | if (die->attrs[i].name == DW_AT_specification | |
19742 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19743 | spec = &die->attrs[i]; | |
19744 | } | |
19745 | ||
19746 | if (!spec) | |
19747 | break; | |
c906108c | 19748 | |
f2f0e013 | 19749 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19750 | } |
c5aa993b | 19751 | |
c906108c SS |
19752 | return NULL; |
19753 | } | |
19754 | ||
348e048f DE |
19755 | /* Return the named attribute or NULL if not there, |
19756 | but do not follow DW_AT_specification, etc. | |
19757 | This is for use in contexts where we're reading .debug_types dies. | |
19758 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19759 | back up the chain, and we want to go down. */ | |
19760 | ||
19761 | static struct attribute * | |
45e58e77 | 19762 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19763 | { |
19764 | unsigned int i; | |
19765 | ||
19766 | for (i = 0; i < die->num_attrs; ++i) | |
19767 | if (die->attrs[i].name == name) | |
19768 | return &die->attrs[i]; | |
19769 | ||
19770 | return NULL; | |
19771 | } | |
19772 | ||
7d45c7c3 KB |
19773 | /* Return the string associated with a string-typed attribute, or NULL if it |
19774 | is either not found or is of an incorrect type. */ | |
19775 | ||
19776 | static const char * | |
19777 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19778 | { | |
19779 | struct attribute *attr; | |
19780 | const char *str = NULL; | |
19781 | ||
19782 | attr = dwarf2_attr (die, name, cu); | |
19783 | ||
19784 | if (attr != NULL) | |
19785 | { | |
43988095 | 19786 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
19787 | || attr->form == DW_FORM_string |
19788 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 19789 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19790 | str = DW_STRING (attr); |
19791 | else | |
19792 | complaint (&symfile_complaints, | |
19793 | _("string type expected for attribute %s for " | |
19794 | "DIE at 0x%x in module %s"), | |
9c541725 | 19795 | dwarf_attr_name (name), to_underlying (die->sect_off), |
7d45c7c3 KB |
19796 | objfile_name (cu->objfile)); |
19797 | } | |
19798 | ||
19799 | return str; | |
19800 | } | |
19801 | ||
05cf31d1 JB |
19802 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19803 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19804 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19805 | |
19806 | static int | |
19807 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19808 | { | |
19809 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19810 | ||
19811 | return (attr && DW_UNSND (attr)); | |
19812 | } | |
19813 | ||
3ca72b44 | 19814 | static int |
e142c38c | 19815 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19816 | { |
05cf31d1 JB |
19817 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19818 | which value is non-zero. However, we have to be careful with | |
19819 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19820 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19821 | end up accidently finding a declaration attribute that belongs | |
19822 | to a different DIE referenced by the specification attribute, | |
19823 | even though the given DIE does not have a declaration attribute. */ | |
19824 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19825 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19826 | } |
19827 | ||
63d06c5c | 19828 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19829 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19830 | containing the return value on output. If there is no |
19831 | specification, but there is an abstract origin, that is | |
19832 | returned. */ | |
63d06c5c DC |
19833 | |
19834 | static struct die_info * | |
f2f0e013 | 19835 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19836 | { |
f2f0e013 DJ |
19837 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19838 | *spec_cu); | |
63d06c5c | 19839 | |
edb3359d DJ |
19840 | if (spec_attr == NULL) |
19841 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19842 | ||
63d06c5c DC |
19843 | if (spec_attr == NULL) |
19844 | return NULL; | |
19845 | else | |
f2f0e013 | 19846 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19847 | } |
c906108c | 19848 | |
527f3840 JK |
19849 | /* Stub for free_line_header to match void * callback types. */ |
19850 | ||
19851 | static void | |
19852 | free_line_header_voidp (void *arg) | |
19853 | { | |
9a3c8263 | 19854 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19855 | |
fff8551c | 19856 | delete lh; |
527f3840 JK |
19857 | } |
19858 | ||
fff8551c PA |
19859 | void |
19860 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 19861 | { |
27e0867f | 19862 | if (dwarf_line_debug >= 2) |
fff8551c PA |
19863 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
19864 | include_dirs.size () + 1, include_dir); | |
27e0867f | 19865 | |
fff8551c | 19866 | include_dirs.push_back (include_dir); |
debd256d | 19867 | } |
6e70227d | 19868 | |
fff8551c PA |
19869 | void |
19870 | line_header::add_file_name (const char *name, | |
ecfb656c | 19871 | dir_index d_index, |
fff8551c PA |
19872 | unsigned int mod_time, |
19873 | unsigned int length) | |
debd256d | 19874 | { |
27e0867f DE |
19875 | if (dwarf_line_debug >= 2) |
19876 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 19877 | (unsigned) file_names.size () + 1, name); |
27e0867f | 19878 | |
ecfb656c | 19879 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 19880 | } |
6e70227d | 19881 | |
83769d0b | 19882 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19883 | |
19884 | static struct dwarf2_section_info * | |
19885 | get_debug_line_section (struct dwarf2_cu *cu) | |
19886 | { | |
19887 | struct dwarf2_section_info *section; | |
19888 | ||
19889 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19890 | DWO file. */ | |
19891 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19892 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19893 | else if (cu->per_cu->is_dwz) | |
19894 | { | |
19895 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
19896 | ||
19897 | section = &dwz->line; | |
19898 | } | |
19899 | else | |
19900 | section = &dwarf2_per_objfile->line; | |
19901 | ||
19902 | return section; | |
19903 | } | |
19904 | ||
43988095 JK |
19905 | /* Read directory or file name entry format, starting with byte of |
19906 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
19907 | entries count and the entries themselves in the described entry | |
19908 | format. */ | |
19909 | ||
19910 | static void | |
19911 | read_formatted_entries (bfd *abfd, const gdb_byte **bufp, | |
19912 | struct line_header *lh, | |
19913 | const struct comp_unit_head *cu_header, | |
19914 | void (*callback) (struct line_header *lh, | |
19915 | const char *name, | |
ecfb656c | 19916 | dir_index d_index, |
43988095 JK |
19917 | unsigned int mod_time, |
19918 | unsigned int length)) | |
19919 | { | |
19920 | gdb_byte format_count, formati; | |
19921 | ULONGEST data_count, datai; | |
19922 | const gdb_byte *buf = *bufp; | |
19923 | const gdb_byte *format_header_data; | |
43988095 JK |
19924 | unsigned int bytes_read; |
19925 | ||
19926 | format_count = read_1_byte (abfd, buf); | |
19927 | buf += 1; | |
19928 | format_header_data = buf; | |
19929 | for (formati = 0; formati < format_count; formati++) | |
19930 | { | |
19931 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19932 | buf += bytes_read; | |
19933 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19934 | buf += bytes_read; | |
19935 | } | |
19936 | ||
19937 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19938 | buf += bytes_read; | |
19939 | for (datai = 0; datai < data_count; datai++) | |
19940 | { | |
19941 | const gdb_byte *format = format_header_data; | |
19942 | struct file_entry fe; | |
19943 | ||
43988095 JK |
19944 | for (formati = 0; formati < format_count; formati++) |
19945 | { | |
ecfb656c | 19946 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19947 | format += bytes_read; |
43988095 | 19948 | |
ecfb656c | 19949 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19950 | format += bytes_read; |
ecfb656c PA |
19951 | |
19952 | gdb::optional<const char *> string; | |
19953 | gdb::optional<unsigned int> uint; | |
19954 | ||
43988095 JK |
19955 | switch (form) |
19956 | { | |
19957 | case DW_FORM_string: | |
ecfb656c | 19958 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
19959 | buf += bytes_read; |
19960 | break; | |
19961 | ||
19962 | case DW_FORM_line_strp: | |
ecfb656c PA |
19963 | string.emplace (read_indirect_line_string (abfd, buf, |
19964 | cu_header, | |
19965 | &bytes_read)); | |
43988095 JK |
19966 | buf += bytes_read; |
19967 | break; | |
19968 | ||
19969 | case DW_FORM_data1: | |
ecfb656c | 19970 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
19971 | buf += 1; |
19972 | break; | |
19973 | ||
19974 | case DW_FORM_data2: | |
ecfb656c | 19975 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
19976 | buf += 2; |
19977 | break; | |
19978 | ||
19979 | case DW_FORM_data4: | |
ecfb656c | 19980 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
19981 | buf += 4; |
19982 | break; | |
19983 | ||
19984 | case DW_FORM_data8: | |
ecfb656c | 19985 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
19986 | buf += 8; |
19987 | break; | |
19988 | ||
19989 | case DW_FORM_udata: | |
ecfb656c | 19990 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
19991 | buf += bytes_read; |
19992 | break; | |
19993 | ||
19994 | case DW_FORM_block: | |
19995 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
19996 | current GDB. */ | |
19997 | break; | |
19998 | } | |
ecfb656c PA |
19999 | |
20000 | switch (content_type) | |
20001 | { | |
20002 | case DW_LNCT_path: | |
20003 | if (string.has_value ()) | |
20004 | fe.name = *string; | |
20005 | break; | |
20006 | case DW_LNCT_directory_index: | |
20007 | if (uint.has_value ()) | |
20008 | fe.d_index = (dir_index) *uint; | |
20009 | break; | |
20010 | case DW_LNCT_timestamp: | |
20011 | if (uint.has_value ()) | |
20012 | fe.mod_time = *uint; | |
20013 | break; | |
20014 | case DW_LNCT_size: | |
20015 | if (uint.has_value ()) | |
20016 | fe.length = *uint; | |
20017 | break; | |
20018 | case DW_LNCT_MD5: | |
20019 | break; | |
20020 | default: | |
20021 | complaint (&symfile_complaints, | |
20022 | _("Unknown format content type %s"), | |
20023 | pulongest (content_type)); | |
20024 | } | |
43988095 JK |
20025 | } |
20026 | ||
ecfb656c | 20027 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20028 | } |
20029 | ||
20030 | *bufp = buf; | |
20031 | } | |
20032 | ||
debd256d | 20033 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20034 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20035 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20036 | Returns NULL if there is a problem reading the header, e.g., if it |
20037 | has a version we don't understand. | |
debd256d JB |
20038 | |
20039 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20040 | the returned object point into the dwarf line section buffer, |
20041 | and must not be freed. */ | |
ae2de4f8 | 20042 | |
fff8551c | 20043 | static line_header_up |
9c541725 | 20044 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20045 | { |
d521ce57 | 20046 | const gdb_byte *line_ptr; |
c764a876 | 20047 | unsigned int bytes_read, offset_size; |
debd256d | 20048 | int i; |
d521ce57 | 20049 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20050 | struct dwarf2_section_info *section; |
20051 | bfd *abfd; | |
20052 | ||
36586728 | 20053 | section = get_debug_line_section (cu); |
3019eac3 DE |
20054 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20055 | if (section->buffer == NULL) | |
debd256d | 20056 | { |
3019eac3 DE |
20057 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
20058 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
20059 | else | |
20060 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
20061 | return 0; |
20062 | } | |
20063 | ||
fceca515 DE |
20064 | /* We can't do this until we know the section is non-empty. |
20065 | Only then do we know we have such a section. */ | |
a32a8923 | 20066 | abfd = get_section_bfd_owner (section); |
fceca515 | 20067 | |
a738430d MK |
20068 | /* Make sure that at least there's room for the total_length field. |
20069 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20070 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20071 | { |
4d3c2250 | 20072 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20073 | return 0; |
20074 | } | |
20075 | ||
fff8551c | 20076 | line_header_up lh (new line_header ()); |
debd256d | 20077 | |
9c541725 | 20078 | lh->sect_off = sect_off; |
527f3840 JK |
20079 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20080 | ||
9c541725 | 20081 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20082 | |
a738430d | 20083 | /* Read in the header. */ |
6e70227d | 20084 | lh->total_length = |
c764a876 DE |
20085 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20086 | &bytes_read, &offset_size); | |
debd256d | 20087 | line_ptr += bytes_read; |
3019eac3 | 20088 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20089 | { |
4d3c2250 | 20090 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20091 | return 0; |
20092 | } | |
20093 | lh->statement_program_end = line_ptr + lh->total_length; | |
20094 | lh->version = read_2_bytes (abfd, line_ptr); | |
20095 | line_ptr += 2; | |
43988095 | 20096 | if (lh->version > 5) |
cd366ee8 DE |
20097 | { |
20098 | /* This is a version we don't understand. The format could have | |
20099 | changed in ways we don't handle properly so just punt. */ | |
20100 | complaint (&symfile_complaints, | |
20101 | _("unsupported version in .debug_line section")); | |
20102 | return NULL; | |
20103 | } | |
43988095 JK |
20104 | if (lh->version >= 5) |
20105 | { | |
20106 | gdb_byte segment_selector_size; | |
20107 | ||
20108 | /* Skip address size. */ | |
20109 | read_1_byte (abfd, line_ptr); | |
20110 | line_ptr += 1; | |
20111 | ||
20112 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20113 | line_ptr += 1; | |
20114 | if (segment_selector_size != 0) | |
20115 | { | |
20116 | complaint (&symfile_complaints, | |
20117 | _("unsupported segment selector size %u " | |
20118 | "in .debug_line section"), | |
20119 | segment_selector_size); | |
20120 | return NULL; | |
20121 | } | |
20122 | } | |
c764a876 DE |
20123 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20124 | line_ptr += offset_size; | |
debd256d JB |
20125 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20126 | line_ptr += 1; | |
2dc7f7b3 TT |
20127 | if (lh->version >= 4) |
20128 | { | |
20129 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20130 | line_ptr += 1; | |
20131 | } | |
20132 | else | |
20133 | lh->maximum_ops_per_instruction = 1; | |
20134 | ||
20135 | if (lh->maximum_ops_per_instruction == 0) | |
20136 | { | |
20137 | lh->maximum_ops_per_instruction = 1; | |
20138 | complaint (&symfile_complaints, | |
3e43a32a MS |
20139 | _("invalid maximum_ops_per_instruction " |
20140 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
20141 | } |
20142 | ||
debd256d JB |
20143 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20144 | line_ptr += 1; | |
20145 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20146 | line_ptr += 1; | |
20147 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20148 | line_ptr += 1; | |
20149 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20150 | line_ptr += 1; | |
fff8551c | 20151 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20152 | |
20153 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20154 | for (i = 1; i < lh->opcode_base; ++i) | |
20155 | { | |
20156 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20157 | line_ptr += 1; | |
20158 | } | |
20159 | ||
43988095 | 20160 | if (lh->version >= 5) |
debd256d | 20161 | { |
43988095 | 20162 | /* Read directory table. */ |
fff8551c PA |
20163 | read_formatted_entries (abfd, &line_ptr, lh.get (), &cu->header, |
20164 | [] (struct line_header *lh, const char *name, | |
ecfb656c | 20165 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20166 | unsigned int length) |
20167 | { | |
20168 | lh->add_include_dir (name); | |
20169 | }); | |
debd256d | 20170 | |
43988095 | 20171 | /* Read file name table. */ |
fff8551c PA |
20172 | read_formatted_entries (abfd, &line_ptr, lh.get (), &cu->header, |
20173 | [] (struct line_header *lh, const char *name, | |
ecfb656c | 20174 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20175 | unsigned int length) |
20176 | { | |
ecfb656c | 20177 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20178 | }); |
43988095 JK |
20179 | } |
20180 | else | |
debd256d | 20181 | { |
43988095 JK |
20182 | /* Read directory table. */ |
20183 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20184 | { | |
20185 | line_ptr += bytes_read; | |
fff8551c | 20186 | lh->add_include_dir (cur_dir); |
43988095 | 20187 | } |
debd256d JB |
20188 | line_ptr += bytes_read; |
20189 | ||
43988095 JK |
20190 | /* Read file name table. */ |
20191 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20192 | { | |
ecfb656c PA |
20193 | unsigned int mod_time, length; |
20194 | dir_index d_index; | |
43988095 JK |
20195 | |
20196 | line_ptr += bytes_read; | |
ecfb656c | 20197 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20198 | line_ptr += bytes_read; |
20199 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20200 | line_ptr += bytes_read; | |
20201 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20202 | line_ptr += bytes_read; | |
20203 | ||
ecfb656c | 20204 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20205 | } |
20206 | line_ptr += bytes_read; | |
debd256d | 20207 | } |
6e70227d | 20208 | lh->statement_program_start = line_ptr; |
debd256d | 20209 | |
3019eac3 | 20210 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 20211 | complaint (&symfile_complaints, |
3e43a32a MS |
20212 | _("line number info header doesn't " |
20213 | "fit in `.debug_line' section")); | |
debd256d | 20214 | |
debd256d JB |
20215 | return lh; |
20216 | } | |
c906108c | 20217 | |
c6da4cef DE |
20218 | /* Subroutine of dwarf_decode_lines to simplify it. |
20219 | Return the file name of the psymtab for included file FILE_INDEX | |
20220 | in line header LH of PST. | |
20221 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20222 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
20223 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
20224 | ||
20225 | The function creates dangling cleanup registration. */ | |
c6da4cef | 20226 | |
d521ce57 | 20227 | static const char * |
c6da4cef DE |
20228 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20229 | const struct partial_symtab *pst, | |
20230 | const char *comp_dir) | |
20231 | { | |
8c43009f | 20232 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20233 | const char *include_name = fe.name; |
20234 | const char *include_name_to_compare = include_name; | |
72b9f47f TT |
20235 | const char *pst_filename; |
20236 | char *copied_name = NULL; | |
c6da4cef DE |
20237 | int file_is_pst; |
20238 | ||
8c43009f | 20239 | const char *dir_name = fe.include_dir (lh); |
c6da4cef DE |
20240 | |
20241 | if (!IS_ABSOLUTE_PATH (include_name) | |
20242 | && (dir_name != NULL || comp_dir != NULL)) | |
20243 | { | |
20244 | /* Avoid creating a duplicate psymtab for PST. | |
20245 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20246 | Before we do the comparison, however, we need to account | |
20247 | for DIR_NAME and COMP_DIR. | |
20248 | First prepend dir_name (if non-NULL). If we still don't | |
20249 | have an absolute path prepend comp_dir (if non-NULL). | |
20250 | However, the directory we record in the include-file's | |
20251 | psymtab does not contain COMP_DIR (to match the | |
20252 | corresponding symtab(s)). | |
20253 | ||
20254 | Example: | |
20255 | ||
20256 | bash$ cd /tmp | |
20257 | bash$ gcc -g ./hello.c | |
20258 | include_name = "hello.c" | |
20259 | dir_name = "." | |
20260 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20261 | DW_AT_name = "./hello.c" |
20262 | ||
20263 | */ | |
c6da4cef DE |
20264 | |
20265 | if (dir_name != NULL) | |
20266 | { | |
d521ce57 TT |
20267 | char *tem = concat (dir_name, SLASH_STRING, |
20268 | include_name, (char *)NULL); | |
20269 | ||
20270 | make_cleanup (xfree, tem); | |
20271 | include_name = tem; | |
c6da4cef | 20272 | include_name_to_compare = include_name; |
c6da4cef DE |
20273 | } |
20274 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20275 | { | |
d521ce57 TT |
20276 | char *tem = concat (comp_dir, SLASH_STRING, |
20277 | include_name, (char *)NULL); | |
20278 | ||
20279 | make_cleanup (xfree, tem); | |
20280 | include_name_to_compare = tem; | |
c6da4cef DE |
20281 | } |
20282 | } | |
20283 | ||
20284 | pst_filename = pst->filename; | |
20285 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
20286 | { | |
72b9f47f TT |
20287 | copied_name = concat (pst->dirname, SLASH_STRING, |
20288 | pst_filename, (char *)NULL); | |
20289 | pst_filename = copied_name; | |
c6da4cef DE |
20290 | } |
20291 | ||
1e3fad37 | 20292 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20293 | |
72b9f47f TT |
20294 | if (copied_name != NULL) |
20295 | xfree (copied_name); | |
c6da4cef DE |
20296 | |
20297 | if (file_is_pst) | |
20298 | return NULL; | |
20299 | return include_name; | |
20300 | } | |
20301 | ||
d9b3de22 DE |
20302 | /* State machine to track the state of the line number program. */ |
20303 | ||
6f77053d | 20304 | class lnp_state_machine |
d9b3de22 | 20305 | { |
6f77053d PA |
20306 | public: |
20307 | /* Initialize a machine state for the start of a line number | |
20308 | program. */ | |
20309 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
20310 | ||
8c43009f PA |
20311 | file_entry *current_file () |
20312 | { | |
20313 | /* lh->file_names is 0-based, but the file name numbers in the | |
20314 | statement program are 1-based. */ | |
6f77053d PA |
20315 | return m_line_header->file_name_at (m_file); |
20316 | } | |
20317 | ||
20318 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20319 | we're processing the end of a sequence. */ | |
20320 | void record_line (bool end_sequence); | |
20321 | ||
20322 | /* Check address and if invalid nop-out the rest of the lines in this | |
20323 | sequence. */ | |
20324 | void check_line_address (struct dwarf2_cu *cu, | |
20325 | const gdb_byte *line_ptr, | |
20326 | CORE_ADDR lowpc, CORE_ADDR address); | |
20327 | ||
20328 | void handle_set_discriminator (unsigned int discriminator) | |
20329 | { | |
20330 | m_discriminator = discriminator; | |
20331 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20332 | } | |
20333 | ||
20334 | /* Handle DW_LNE_set_address. */ | |
20335 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20336 | { | |
20337 | m_op_index = 0; | |
20338 | address += baseaddr; | |
20339 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20340 | } | |
20341 | ||
20342 | /* Handle DW_LNS_advance_pc. */ | |
20343 | void handle_advance_pc (CORE_ADDR adjust); | |
20344 | ||
20345 | /* Handle a special opcode. */ | |
20346 | void handle_special_opcode (unsigned char op_code); | |
20347 | ||
20348 | /* Handle DW_LNS_advance_line. */ | |
20349 | void handle_advance_line (int line_delta) | |
20350 | { | |
20351 | advance_line (line_delta); | |
20352 | } | |
20353 | ||
20354 | /* Handle DW_LNS_set_file. */ | |
20355 | void handle_set_file (file_name_index file); | |
20356 | ||
20357 | /* Handle DW_LNS_negate_stmt. */ | |
20358 | void handle_negate_stmt () | |
20359 | { | |
20360 | m_is_stmt = !m_is_stmt; | |
20361 | } | |
20362 | ||
20363 | /* Handle DW_LNS_const_add_pc. */ | |
20364 | void handle_const_add_pc (); | |
20365 | ||
20366 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20367 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20368 | { | |
20369 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20370 | m_op_index = 0; | |
20371 | } | |
20372 | ||
20373 | /* Handle DW_LNS_copy. */ | |
20374 | void handle_copy () | |
20375 | { | |
20376 | record_line (false); | |
20377 | m_discriminator = 0; | |
20378 | } | |
20379 | ||
20380 | /* Handle DW_LNE_end_sequence. */ | |
20381 | void handle_end_sequence () | |
20382 | { | |
20383 | m_record_line_callback = ::record_line; | |
20384 | } | |
20385 | ||
20386 | private: | |
20387 | /* Advance the line by LINE_DELTA. */ | |
20388 | void advance_line (int line_delta) | |
20389 | { | |
20390 | m_line += line_delta; | |
20391 | ||
20392 | if (line_delta != 0) | |
20393 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20394 | } |
20395 | ||
6f77053d PA |
20396 | gdbarch *m_gdbarch; |
20397 | ||
20398 | /* True if we're recording lines. | |
20399 | Otherwise we're building partial symtabs and are just interested in | |
20400 | finding include files mentioned by the line number program. */ | |
20401 | bool m_record_lines_p; | |
20402 | ||
8c43009f | 20403 | /* The line number header. */ |
6f77053d | 20404 | line_header *m_line_header; |
8c43009f | 20405 | |
6f77053d PA |
20406 | /* These are part of the standard DWARF line number state machine, |
20407 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20408 | |
6f77053d | 20409 | unsigned char m_op_index = 0; |
8c43009f | 20410 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20411 | file_name_index m_file = (file_name_index) 1; |
20412 | unsigned int m_line = 1; | |
20413 | ||
20414 | /* These are initialized in the constructor. */ | |
20415 | ||
20416 | CORE_ADDR m_address; | |
20417 | bool m_is_stmt; | |
20418 | unsigned int m_discriminator; | |
d9b3de22 DE |
20419 | |
20420 | /* Additional bits of state we need to track. */ | |
20421 | ||
20422 | /* The last file that we called dwarf2_start_subfile for. | |
20423 | This is only used for TLLs. */ | |
6f77053d | 20424 | unsigned int m_last_file = 0; |
d9b3de22 | 20425 | /* The last file a line number was recorded for. */ |
6f77053d | 20426 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
20427 | |
20428 | /* The function to call to record a line. */ | |
6f77053d | 20429 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
20430 | |
20431 | /* The last line number that was recorded, used to coalesce | |
20432 | consecutive entries for the same line. This can happen, for | |
20433 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20434 | unsigned int m_last_line = 0; |
20435 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20436 | }; |
d9b3de22 | 20437 | |
6f77053d PA |
20438 | void |
20439 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20440 | { | |
20441 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20442 | / m_line_header->maximum_ops_per_instruction) | |
20443 | * m_line_header->minimum_instruction_length); | |
20444 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20445 | m_op_index = ((m_op_index + adjust) | |
20446 | % m_line_header->maximum_ops_per_instruction); | |
20447 | } | |
d9b3de22 | 20448 | |
6f77053d PA |
20449 | void |
20450 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20451 | { |
6f77053d PA |
20452 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20453 | CORE_ADDR addr_adj = (((m_op_index | |
20454 | + (adj_opcode / m_line_header->line_range)) | |
20455 | / m_line_header->maximum_ops_per_instruction) | |
20456 | * m_line_header->minimum_instruction_length); | |
20457 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20458 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20459 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20460 | |
6f77053d PA |
20461 | int line_delta = (m_line_header->line_base |
20462 | + (adj_opcode % m_line_header->line_range)); | |
20463 | advance_line (line_delta); | |
20464 | record_line (false); | |
20465 | m_discriminator = 0; | |
20466 | } | |
d9b3de22 | 20467 | |
6f77053d PA |
20468 | void |
20469 | lnp_state_machine::handle_set_file (file_name_index file) | |
20470 | { | |
20471 | m_file = file; | |
20472 | ||
20473 | const file_entry *fe = current_file (); | |
20474 | if (fe == NULL) | |
20475 | dwarf2_debug_line_missing_file_complaint (); | |
20476 | else if (m_record_lines_p) | |
20477 | { | |
20478 | const char *dir = fe->include_dir (m_line_header); | |
20479 | ||
20480 | m_last_subfile = current_subfile; | |
20481 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
20482 | dwarf2_start_subfile (fe->name, dir); | |
20483 | } | |
20484 | } | |
20485 | ||
20486 | void | |
20487 | lnp_state_machine::handle_const_add_pc () | |
20488 | { | |
20489 | CORE_ADDR adjust | |
20490 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20491 | ||
20492 | CORE_ADDR addr_adj | |
20493 | = (((m_op_index + adjust) | |
20494 | / m_line_header->maximum_ops_per_instruction) | |
20495 | * m_line_header->minimum_instruction_length); | |
20496 | ||
20497 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20498 | m_op_index = ((m_op_index + adjust) | |
20499 | % m_line_header->maximum_ops_per_instruction); | |
20500 | } | |
d9b3de22 | 20501 | |
c91513d8 PP |
20502 | /* Ignore this record_line request. */ |
20503 | ||
20504 | static void | |
20505 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
20506 | { | |
20507 | return; | |
20508 | } | |
20509 | ||
a05a36a5 DE |
20510 | /* Return non-zero if we should add LINE to the line number table. |
20511 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20512 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20513 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20514 | had a non-zero discriminator. | |
20515 | ||
20516 | We have to be careful in the presence of discriminators. | |
20517 | E.g., for this line: | |
20518 | ||
20519 | for (i = 0; i < 100000; i++); | |
20520 | ||
20521 | clang can emit four line number entries for that one line, | |
20522 | each with a different discriminator. | |
20523 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20524 | ||
20525 | However, we want gdb to coalesce all four entries into one. | |
20526 | Otherwise the user could stepi into the middle of the line and | |
20527 | gdb would get confused about whether the pc really was in the | |
20528 | middle of the line. | |
20529 | ||
20530 | Things are further complicated by the fact that two consecutive | |
20531 | line number entries for the same line is a heuristic used by gcc | |
20532 | to denote the end of the prologue. So we can't just discard duplicate | |
20533 | entries, we have to be selective about it. The heuristic we use is | |
20534 | that we only collapse consecutive entries for the same line if at least | |
20535 | one of those entries has a non-zero discriminator. PR 17276. | |
20536 | ||
20537 | Note: Addresses in the line number state machine can never go backwards | |
20538 | within one sequence, thus this coalescing is ok. */ | |
20539 | ||
20540 | static int | |
20541 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
20542 | int line_has_non_zero_discriminator, | |
20543 | struct subfile *last_subfile) | |
20544 | { | |
20545 | if (current_subfile != last_subfile) | |
20546 | return 1; | |
20547 | if (line != last_line) | |
20548 | return 1; | |
20549 | /* Same line for the same file that we've seen already. | |
20550 | As a last check, for pr 17276, only record the line if the line | |
20551 | has never had a non-zero discriminator. */ | |
20552 | if (!line_has_non_zero_discriminator) | |
20553 | return 1; | |
20554 | return 0; | |
20555 | } | |
20556 | ||
252a6764 DE |
20557 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
20558 | in the line table of subfile SUBFILE. */ | |
20559 | ||
20560 | static void | |
d9b3de22 DE |
20561 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20562 | unsigned int line, CORE_ADDR address, | |
20563 | record_line_ftype p_record_line) | |
252a6764 DE |
20564 | { |
20565 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20566 | ||
27e0867f DE |
20567 | if (dwarf_line_debug) |
20568 | { | |
20569 | fprintf_unfiltered (gdb_stdlog, | |
20570 | "Recording line %u, file %s, address %s\n", | |
20571 | line, lbasename (subfile->name), | |
20572 | paddress (gdbarch, address)); | |
20573 | } | |
20574 | ||
d5962de5 | 20575 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
20576 | } |
20577 | ||
20578 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20579 | Mark the end of a set of line number records. | |
d9b3de22 | 20580 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20581 | If SUBFILE is NULL the request is ignored. */ |
20582 | ||
20583 | static void | |
20584 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
20585 | CORE_ADDR address, record_line_ftype p_record_line) | |
20586 | { | |
27e0867f DE |
20587 | if (subfile == NULL) |
20588 | return; | |
20589 | ||
20590 | if (dwarf_line_debug) | |
20591 | { | |
20592 | fprintf_unfiltered (gdb_stdlog, | |
20593 | "Finishing current line, file %s, address %s\n", | |
20594 | lbasename (subfile->name), | |
20595 | paddress (gdbarch, address)); | |
20596 | } | |
20597 | ||
d9b3de22 DE |
20598 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
20599 | } | |
20600 | ||
6f77053d PA |
20601 | void |
20602 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20603 | { |
d9b3de22 DE |
20604 | if (dwarf_line_debug) |
20605 | { | |
20606 | fprintf_unfiltered (gdb_stdlog, | |
20607 | "Processing actual line %u: file %u," | |
20608 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20609 | m_line, to_underlying (m_file), |
20610 | paddress (m_gdbarch, m_address), | |
20611 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20612 | } |
20613 | ||
6f77053d | 20614 | file_entry *fe = current_file (); |
8c43009f PA |
20615 | |
20616 | if (fe == NULL) | |
d9b3de22 DE |
20617 | dwarf2_debug_line_missing_file_complaint (); |
20618 | /* For now we ignore lines not starting on an instruction boundary. | |
20619 | But not when processing end_sequence for compatibility with the | |
20620 | previous version of the code. */ | |
6f77053d | 20621 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20622 | { |
8c43009f | 20623 | fe->included_p = 1; |
6f77053d | 20624 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 20625 | { |
6f77053d | 20626 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 20627 | { |
6f77053d PA |
20628 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
20629 | m_address, m_record_line_callback); | |
d9b3de22 DE |
20630 | } |
20631 | ||
20632 | if (!end_sequence) | |
20633 | { | |
6f77053d PA |
20634 | if (dwarf_record_line_p (m_line, m_last_line, |
20635 | m_line_has_non_zero_discriminator, | |
20636 | m_last_subfile)) | |
d9b3de22 | 20637 | { |
6f77053d PA |
20638 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
20639 | m_line, m_address, | |
20640 | m_record_line_callback); | |
d9b3de22 | 20641 | } |
6f77053d PA |
20642 | m_last_subfile = current_subfile; |
20643 | m_last_line = m_line; | |
d9b3de22 DE |
20644 | } |
20645 | } | |
20646 | } | |
20647 | } | |
20648 | ||
6f77053d PA |
20649 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
20650 | bool record_lines_p) | |
d9b3de22 | 20651 | { |
6f77053d PA |
20652 | m_gdbarch = arch; |
20653 | m_record_lines_p = record_lines_p; | |
20654 | m_line_header = lh; | |
d9b3de22 | 20655 | |
6f77053d | 20656 | m_record_line_callback = ::record_line; |
d9b3de22 | 20657 | |
d9b3de22 DE |
20658 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20659 | was a line entry for it so that the backend has a chance to adjust it | |
20660 | and also record it in case it needs it. This is currently used by MIPS | |
20661 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20662 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20663 | m_is_stmt = lh->default_is_stmt; | |
20664 | m_discriminator = 0; | |
252a6764 DE |
20665 | } |
20666 | ||
6f77053d PA |
20667 | void |
20668 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20669 | const gdb_byte *line_ptr, | |
20670 | CORE_ADDR lowpc, CORE_ADDR address) | |
924c2928 DE |
20671 | { |
20672 | /* If address < lowpc then it's not a usable value, it's outside the | |
20673 | pc range of the CU. However, we restrict the test to only address | |
20674 | values of zero to preserve GDB's previous behaviour which is to | |
20675 | handle the specific case of a function being GC'd by the linker. */ | |
20676 | ||
20677 | if (address == 0 && address < lowpc) | |
20678 | { | |
20679 | /* This line table is for a function which has been | |
20680 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20681 | ||
20682 | struct objfile *objfile = cu->objfile; | |
20683 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; | |
20684 | ||
20685 | complaint (&symfile_complaints, | |
20686 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
20687 | line_offset, objfile_name (objfile)); | |
6f77053d PA |
20688 | m_record_line_callback = noop_record_line; |
20689 | /* Note: record_line_callback is left as noop_record_line until | |
20690 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
20691 | } |
20692 | } | |
20693 | ||
f3f5162e | 20694 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20695 | Process the line number information in LH. |
20696 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20697 | program in order to set included_p for every referenced header. */ | |
debd256d | 20698 | |
c906108c | 20699 | static void |
43f3e411 DE |
20700 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20701 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20702 | { |
d521ce57 TT |
20703 | const gdb_byte *line_ptr, *extended_end; |
20704 | const gdb_byte *line_end; | |
a8c50c1f | 20705 | unsigned int bytes_read, extended_len; |
699ca60a | 20706 | unsigned char op_code, extended_op; |
e142c38c DJ |
20707 | CORE_ADDR baseaddr; |
20708 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 20709 | bfd *abfd = objfile->obfd; |
fbf65064 | 20710 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20711 | /* True if we're recording line info (as opposed to building partial |
20712 | symtabs and just interested in finding include files mentioned by | |
20713 | the line number program). */ | |
20714 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20715 | |
20716 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20717 | |
debd256d JB |
20718 | line_ptr = lh->statement_program_start; |
20719 | line_end = lh->statement_program_end; | |
c906108c SS |
20720 | |
20721 | /* Read the statement sequences until there's nothing left. */ | |
20722 | while (line_ptr < line_end) | |
20723 | { | |
6f77053d PA |
20724 | /* The DWARF line number program state machine. Reset the state |
20725 | machine at the start of each sequence. */ | |
20726 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
20727 | bool end_sequence = false; | |
d9b3de22 | 20728 | |
8c43009f | 20729 | if (record_lines_p) |
c906108c | 20730 | { |
8c43009f PA |
20731 | /* Start a subfile for the current file of the state |
20732 | machine. */ | |
20733 | const file_entry *fe = state_machine.current_file (); | |
20734 | ||
20735 | if (fe != NULL) | |
20736 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
20737 | } |
20738 | ||
a738430d | 20739 | /* Decode the table. */ |
d9b3de22 | 20740 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20741 | { |
20742 | op_code = read_1_byte (abfd, line_ptr); | |
20743 | line_ptr += 1; | |
9aa1fe7e | 20744 | |
debd256d | 20745 | if (op_code >= lh->opcode_base) |
6e70227d | 20746 | { |
8e07a239 | 20747 | /* Special opcode. */ |
6f77053d | 20748 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20749 | } |
20750 | else switch (op_code) | |
c906108c SS |
20751 | { |
20752 | case DW_LNS_extended_op: | |
3e43a32a MS |
20753 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20754 | &bytes_read); | |
473b7be6 | 20755 | line_ptr += bytes_read; |
a8c50c1f | 20756 | extended_end = line_ptr + extended_len; |
c906108c SS |
20757 | extended_op = read_1_byte (abfd, line_ptr); |
20758 | line_ptr += 1; | |
20759 | switch (extended_op) | |
20760 | { | |
20761 | case DW_LNE_end_sequence: | |
6f77053d PA |
20762 | state_machine.handle_end_sequence (); |
20763 | end_sequence = true; | |
c906108c SS |
20764 | break; |
20765 | case DW_LNE_set_address: | |
d9b3de22 DE |
20766 | { |
20767 | CORE_ADDR address | |
20768 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20769 | line_ptr += bytes_read; |
6f77053d PA |
20770 | |
20771 | state_machine.check_line_address (cu, line_ptr, | |
20772 | lowpc, address); | |
20773 | state_machine.handle_set_address (baseaddr, address); | |
d9b3de22 | 20774 | } |
c906108c SS |
20775 | break; |
20776 | case DW_LNE_define_file: | |
debd256d | 20777 | { |
d521ce57 | 20778 | const char *cur_file; |
ecfb656c PA |
20779 | unsigned int mod_time, length; |
20780 | dir_index dindex; | |
6e70227d | 20781 | |
3e43a32a MS |
20782 | cur_file = read_direct_string (abfd, line_ptr, |
20783 | &bytes_read); | |
debd256d | 20784 | line_ptr += bytes_read; |
ecfb656c | 20785 | dindex = (dir_index) |
debd256d JB |
20786 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20787 | line_ptr += bytes_read; | |
20788 | mod_time = | |
20789 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20790 | line_ptr += bytes_read; | |
20791 | length = | |
20792 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20793 | line_ptr += bytes_read; | |
ecfb656c | 20794 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20795 | } |
c906108c | 20796 | break; |
d0c6ba3d | 20797 | case DW_LNE_set_discriminator: |
6f77053d PA |
20798 | { |
20799 | /* The discriminator is not interesting to the | |
20800 | debugger; just ignore it. We still need to | |
20801 | check its value though: | |
20802 | if there are consecutive entries for the same | |
20803 | (non-prologue) line we want to coalesce them. | |
20804 | PR 17276. */ | |
20805 | unsigned int discr | |
20806 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20807 | line_ptr += bytes_read; | |
20808 | ||
20809 | state_machine.handle_set_discriminator (discr); | |
20810 | } | |
d0c6ba3d | 20811 | break; |
c906108c | 20812 | default: |
4d3c2250 | 20813 | complaint (&symfile_complaints, |
e2e0b3e5 | 20814 | _("mangled .debug_line section")); |
debd256d | 20815 | return; |
c906108c | 20816 | } |
a8c50c1f DJ |
20817 | /* Make sure that we parsed the extended op correctly. If e.g. |
20818 | we expected a different address size than the producer used, | |
20819 | we may have read the wrong number of bytes. */ | |
20820 | if (line_ptr != extended_end) | |
20821 | { | |
20822 | complaint (&symfile_complaints, | |
20823 | _("mangled .debug_line section")); | |
20824 | return; | |
20825 | } | |
c906108c SS |
20826 | break; |
20827 | case DW_LNS_copy: | |
6f77053d | 20828 | state_machine.handle_copy (); |
c906108c SS |
20829 | break; |
20830 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20831 | { |
20832 | CORE_ADDR adjust | |
20833 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20834 | line_ptr += bytes_read; |
6f77053d PA |
20835 | |
20836 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20837 | } |
c906108c SS |
20838 | break; |
20839 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20840 | { |
20841 | int line_delta | |
20842 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20843 | line_ptr += bytes_read; |
6f77053d PA |
20844 | |
20845 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20846 | } |
c906108c SS |
20847 | break; |
20848 | case DW_LNS_set_file: | |
d9b3de22 | 20849 | { |
6f77053d | 20850 | file_name_index file |
ecfb656c PA |
20851 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20852 | &bytes_read); | |
d9b3de22 | 20853 | line_ptr += bytes_read; |
8c43009f | 20854 | |
6f77053d | 20855 | state_machine.handle_set_file (file); |
d9b3de22 | 20856 | } |
c906108c SS |
20857 | break; |
20858 | case DW_LNS_set_column: | |
0ad93d4f | 20859 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20860 | line_ptr += bytes_read; |
20861 | break; | |
20862 | case DW_LNS_negate_stmt: | |
6f77053d | 20863 | state_machine.handle_negate_stmt (); |
c906108c SS |
20864 | break; |
20865 | case DW_LNS_set_basic_block: | |
c906108c | 20866 | break; |
c2c6d25f JM |
20867 | /* Add to the address register of the state machine the |
20868 | address increment value corresponding to special opcode | |
a738430d MK |
20869 | 255. I.e., this value is scaled by the minimum |
20870 | instruction length since special opcode 255 would have | |
b021a221 | 20871 | scaled the increment. */ |
c906108c | 20872 | case DW_LNS_const_add_pc: |
6f77053d | 20873 | state_machine.handle_const_add_pc (); |
c906108c SS |
20874 | break; |
20875 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20876 | { |
6f77053d | 20877 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20878 | line_ptr += 2; |
6f77053d PA |
20879 | |
20880 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20881 | } |
c906108c | 20882 | break; |
9aa1fe7e | 20883 | default: |
a738430d MK |
20884 | { |
20885 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20886 | int i; |
a738430d | 20887 | |
debd256d | 20888 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20889 | { |
20890 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20891 | line_ptr += bytes_read; | |
20892 | } | |
20893 | } | |
c906108c SS |
20894 | } |
20895 | } | |
d9b3de22 DE |
20896 | |
20897 | if (!end_sequence) | |
20898 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20899 | ||
20900 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20901 | in which case we still finish recording the last line). */ | |
6f77053d | 20902 | state_machine.record_line (true); |
c906108c | 20903 | } |
f3f5162e DE |
20904 | } |
20905 | ||
20906 | /* Decode the Line Number Program (LNP) for the given line_header | |
20907 | structure and CU. The actual information extracted and the type | |
20908 | of structures created from the LNP depends on the value of PST. | |
20909 | ||
20910 | 1. If PST is NULL, then this procedure uses the data from the program | |
20911 | to create all necessary symbol tables, and their linetables. | |
20912 | ||
20913 | 2. If PST is not NULL, this procedure reads the program to determine | |
20914 | the list of files included by the unit represented by PST, and | |
20915 | builds all the associated partial symbol tables. | |
20916 | ||
20917 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20918 | It is used for relative paths in the line table. | |
20919 | NOTE: When processing partial symtabs (pst != NULL), | |
20920 | comp_dir == pst->dirname. | |
20921 | ||
20922 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20923 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20924 | symtab we don't use it in the name of the psymtabs we create. | |
20925 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20926 | A good testcase for this is mb-inline.exp. |
20927 | ||
527f3840 JK |
20928 | LOWPC is the lowest address in CU (or 0 if not known). |
20929 | ||
20930 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20931 | for its PC<->lines mapping information. Otherwise only the filename | |
20932 | table is read in. */ | |
f3f5162e DE |
20933 | |
20934 | static void | |
20935 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 20936 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 20937 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
20938 | { |
20939 | struct objfile *objfile = cu->objfile; | |
20940 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 20941 | |
527f3840 JK |
20942 | if (decode_mapping) |
20943 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20944 | |
20945 | if (decode_for_pst_p) | |
20946 | { | |
20947 | int file_index; | |
20948 | ||
20949 | /* Now that we're done scanning the Line Header Program, we can | |
20950 | create the psymtab of each included file. */ | |
fff8551c | 20951 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
20952 | if (lh->file_names[file_index].included_p == 1) |
20953 | { | |
d521ce57 | 20954 | const char *include_name = |
c6da4cef DE |
20955 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
20956 | if (include_name != NULL) | |
aaa75496 JB |
20957 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20958 | } | |
20959 | } | |
cb1df416 DJ |
20960 | else |
20961 | { | |
20962 | /* Make sure a symtab is created for every file, even files | |
20963 | which contain only variables (i.e. no code with associated | |
20964 | line numbers). */ | |
43f3e411 | 20965 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 20966 | int i; |
cb1df416 | 20967 | |
fff8551c | 20968 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 20969 | { |
8c43009f | 20970 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 20971 | |
8c43009f | 20972 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 20973 | |
cb1df416 | 20974 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
20975 | { |
20976 | current_subfile->symtab | |
20977 | = allocate_symtab (cust, current_subfile->name); | |
20978 | } | |
8c43009f | 20979 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
20980 | } |
20981 | } | |
c906108c SS |
20982 | } |
20983 | ||
20984 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20985 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20986 | or NULL if not known. |
c906108c SS |
20987 | This routine tries to keep line numbers from identical absolute and |
20988 | relative file names in a common subfile. | |
20989 | ||
20990 | Using the `list' example from the GDB testsuite, which resides in | |
20991 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20992 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20993 | ||
c5aa993b | 20994 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20995 | DW_AT_comp_dir: /compdir |
357e46e7 | 20996 | files.files[0].name: list0.h |
c5aa993b | 20997 | files.files[0].dir: /srcdir |
357e46e7 | 20998 | files.files[1].name: list0.c |
c5aa993b | 20999 | files.files[1].dir: /srcdir |
c906108c SS |
21000 | |
21001 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21002 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21003 | start_subfile will ensure that this happens provided that we pass the | |
21004 | concatenation of files.files[1].dir and files.files[1].name as the | |
21005 | subfile's name. */ | |
c906108c SS |
21006 | |
21007 | static void | |
4d663531 | 21008 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 21009 | { |
d521ce57 | 21010 | char *copy = NULL; |
4f1520fb | 21011 | |
4d663531 | 21012 | /* In order not to lose the line information directory, |
4f1520fb FR |
21013 | we concatenate it to the filename when it makes sense. |
21014 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21015 | information): ``The directory index is ignored for file names | |
21016 | that represent full path names''. Thus ignoring dirname in the | |
21017 | `else' branch below isn't an issue. */ | |
c906108c | 21018 | |
d5166ae1 | 21019 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21020 | { |
21021 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21022 | filename = copy; | |
21023 | } | |
c906108c | 21024 | |
4d663531 | 21025 | start_subfile (filename); |
4f1520fb | 21026 | |
d521ce57 TT |
21027 | if (copy != NULL) |
21028 | xfree (copy); | |
c906108c SS |
21029 | } |
21030 | ||
f4dc4d17 DE |
21031 | /* Start a symtab for DWARF. |
21032 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
21033 | ||
43f3e411 | 21034 | static struct compunit_symtab * |
f4dc4d17 | 21035 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21036 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21037 | { |
43f3e411 | 21038 | struct compunit_symtab *cust |
5ffa0793 | 21039 | = start_symtab (cu->objfile, name, comp_dir, low_pc, cu->language); |
43f3e411 | 21040 | |
f4dc4d17 DE |
21041 | record_debugformat ("DWARF 2"); |
21042 | record_producer (cu->producer); | |
21043 | ||
21044 | /* We assume that we're processing GCC output. */ | |
21045 | processing_gcc_compilation = 2; | |
21046 | ||
4d4ec4e5 | 21047 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
21048 | |
21049 | return cust; | |
f4dc4d17 DE |
21050 | } |
21051 | ||
4c2df51b DJ |
21052 | static void |
21053 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21054 | struct dwarf2_cu *cu) |
4c2df51b | 21055 | { |
e7c27a73 DJ |
21056 | struct objfile *objfile = cu->objfile; |
21057 | struct comp_unit_head *cu_header = &cu->header; | |
21058 | ||
4c2df51b DJ |
21059 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21060 | code here to turn a symbol with DW_AT_external and a | |
21061 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21062 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21063 | with some versions of binutils) where shared libraries could have | |
21064 | relocations against symbols in their debug information - the | |
21065 | minimal symbol would have the right address, but the debug info | |
21066 | would not. It's no longer necessary, because we will explicitly | |
21067 | apply relocations when we read in the debug information now. */ | |
21068 | ||
21069 | /* A DW_AT_location attribute with no contents indicates that a | |
21070 | variable has been optimized away. */ | |
21071 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21072 | { | |
f1e6e072 | 21073 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21074 | return; |
21075 | } | |
21076 | ||
21077 | /* Handle one degenerate form of location expression specially, to | |
21078 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21079 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21080 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21081 | |
21082 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21083 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21084 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21085 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21086 | && (DW_BLOCK (attr)->size | |
21087 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21088 | { |
891d2f0b | 21089 | unsigned int dummy; |
4c2df51b | 21090 | |
3019eac3 DE |
21091 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21092 | SYMBOL_VALUE_ADDRESS (sym) = | |
21093 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21094 | else | |
21095 | SYMBOL_VALUE_ADDRESS (sym) = | |
21096 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21097 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21098 | fixup_symbol_section (sym, objfile); |
21099 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21100 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21101 | return; |
21102 | } | |
21103 | ||
21104 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21105 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21106 | (i.e. when the value of a register or memory location is | |
21107 | referenced, or a thread-local block, etc.). Then again, it might | |
21108 | not be worthwhile. I'm assuming that it isn't unless performance | |
21109 | or memory numbers show me otherwise. */ | |
21110 | ||
f1e6e072 | 21111 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21112 | |
f1e6e072 | 21113 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21114 | cu->has_loclist = 1; |
4c2df51b DJ |
21115 | } |
21116 | ||
c906108c SS |
21117 | /* Given a pointer to a DWARF information entry, figure out if we need |
21118 | to make a symbol table entry for it, and if so, create a new entry | |
21119 | and return a pointer to it. | |
21120 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21121 | used the passed type. |
21122 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21123 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21124 | |
21125 | static struct symbol * | |
34eaf542 TT |
21126 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21127 | struct symbol *space) | |
c906108c | 21128 | { |
e7c27a73 | 21129 | struct objfile *objfile = cu->objfile; |
3e29f34a | 21130 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21131 | struct symbol *sym = NULL; |
15d034d0 | 21132 | const char *name; |
c906108c SS |
21133 | struct attribute *attr = NULL; |
21134 | struct attribute *attr2 = NULL; | |
e142c38c | 21135 | CORE_ADDR baseaddr; |
e37fd15a SW |
21136 | struct pending **list_to_add = NULL; |
21137 | ||
edb3359d | 21138 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21139 | |
21140 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21141 | |
94af9270 | 21142 | name = dwarf2_name (die, cu); |
c906108c SS |
21143 | if (name) |
21144 | { | |
94af9270 | 21145 | const char *linkagename; |
34eaf542 | 21146 | int suppress_add = 0; |
94af9270 | 21147 | |
34eaf542 TT |
21148 | if (space) |
21149 | sym = space; | |
21150 | else | |
e623cf5d | 21151 | sym = allocate_symbol (objfile); |
c906108c | 21152 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21153 | |
21154 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21155 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21156 | linkagename = dwarf2_physname (name, die, cu); |
21157 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21158 | |
f55ee35c JK |
21159 | /* Fortran does not have mangling standard and the mangling does differ |
21160 | between gfortran, iFort etc. */ | |
21161 | if (cu->language == language_fortran | |
b250c185 | 21162 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21163 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21164 | dwarf2_full_name (name, die, cu), |
29df156d | 21165 | NULL); |
f55ee35c | 21166 | |
c906108c | 21167 | /* Default assumptions. |
c5aa993b | 21168 | Use the passed type or decode it from the die. */ |
176620f1 | 21169 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21170 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21171 | if (type != NULL) |
21172 | SYMBOL_TYPE (sym) = type; | |
21173 | else | |
e7c27a73 | 21174 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21175 | attr = dwarf2_attr (die, |
21176 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21177 | cu); | |
c906108c SS |
21178 | if (attr) |
21179 | { | |
21180 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21181 | } | |
cb1df416 | 21182 | |
edb3359d DJ |
21183 | attr = dwarf2_attr (die, |
21184 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21185 | cu); | |
cb1df416 DJ |
21186 | if (attr) |
21187 | { | |
ecfb656c | 21188 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21189 | struct file_entry *fe; |
9a619af0 | 21190 | |
ecfb656c PA |
21191 | if (cu->line_header != NULL) |
21192 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21193 | else |
21194 | fe = NULL; | |
21195 | ||
21196 | if (fe == NULL) | |
cb1df416 DJ |
21197 | complaint (&symfile_complaints, |
21198 | _("file index out of range")); | |
8c43009f PA |
21199 | else |
21200 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21201 | } |
21202 | ||
c906108c SS |
21203 | switch (die->tag) |
21204 | { | |
21205 | case DW_TAG_label: | |
e142c38c | 21206 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21207 | if (attr) |
3e29f34a MR |
21208 | { |
21209 | CORE_ADDR addr; | |
21210 | ||
21211 | addr = attr_value_as_address (attr); | |
21212 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21213 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21214 | } | |
0f5238ed TT |
21215 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21216 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21217 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 21218 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21219 | break; |
21220 | case DW_TAG_subprogram: | |
21221 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21222 | finish_block. */ | |
f1e6e072 | 21223 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21224 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21225 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21226 | || cu->language == language_ada) | |
c906108c | 21227 | { |
2cfa0c8d JB |
21228 | /* Subprograms marked external are stored as a global symbol. |
21229 | Ada subprograms, whether marked external or not, are always | |
21230 | stored as a global symbol, because we want to be able to | |
21231 | access them globally. For instance, we want to be able | |
21232 | to break on a nested subprogram without having to | |
21233 | specify the context. */ | |
e37fd15a | 21234 | list_to_add = &global_symbols; |
c906108c SS |
21235 | } |
21236 | else | |
21237 | { | |
e37fd15a | 21238 | list_to_add = cu->list_in_scope; |
c906108c SS |
21239 | } |
21240 | break; | |
edb3359d DJ |
21241 | case DW_TAG_inlined_subroutine: |
21242 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21243 | finish_block. */ | |
f1e6e072 | 21244 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21245 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21246 | list_to_add = cu->list_in_scope; |
edb3359d | 21247 | break; |
34eaf542 TT |
21248 | case DW_TAG_template_value_param: |
21249 | suppress_add = 1; | |
21250 | /* Fall through. */ | |
72929c62 | 21251 | case DW_TAG_constant: |
c906108c | 21252 | case DW_TAG_variable: |
254e6b9e | 21253 | case DW_TAG_member: |
0963b4bd MS |
21254 | /* Compilation with minimal debug info may result in |
21255 | variables with missing type entries. Change the | |
21256 | misleading `void' type to something sensible. */ | |
c906108c | 21257 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21258 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21259 | |
e142c38c | 21260 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21261 | /* In the case of DW_TAG_member, we should only be called for |
21262 | static const members. */ | |
21263 | if (die->tag == DW_TAG_member) | |
21264 | { | |
3863f96c DE |
21265 | /* dwarf2_add_field uses die_is_declaration, |
21266 | so we do the same. */ | |
254e6b9e DE |
21267 | gdb_assert (die_is_declaration (die, cu)); |
21268 | gdb_assert (attr); | |
21269 | } | |
c906108c SS |
21270 | if (attr) |
21271 | { | |
e7c27a73 | 21272 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21273 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21274 | if (!suppress_add) |
34eaf542 TT |
21275 | { |
21276 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 21277 | list_to_add = &global_symbols; |
34eaf542 | 21278 | else |
e37fd15a | 21279 | list_to_add = cu->list_in_scope; |
34eaf542 | 21280 | } |
c906108c SS |
21281 | break; |
21282 | } | |
e142c38c | 21283 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21284 | if (attr) |
21285 | { | |
e7c27a73 | 21286 | var_decode_location (attr, sym, cu); |
e142c38c | 21287 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21288 | |
21289 | /* Fortran explicitly imports any global symbols to the local | |
21290 | scope by DW_TAG_common_block. */ | |
21291 | if (cu->language == language_fortran && die->parent | |
21292 | && die->parent->tag == DW_TAG_common_block) | |
21293 | attr2 = NULL; | |
21294 | ||
caac4577 JG |
21295 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21296 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21297 | && !dwarf2_per_objfile->has_section_at_zero) | |
21298 | { | |
21299 | /* When a static variable is eliminated by the linker, | |
21300 | the corresponding debug information is not stripped | |
21301 | out, but the variable address is set to null; | |
21302 | do not add such variables into symbol table. */ | |
21303 | } | |
21304 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21305 | { |
f55ee35c JK |
21306 | /* Workaround gfortran PR debug/40040 - it uses |
21307 | DW_AT_location for variables in -fPIC libraries which may | |
21308 | get overriden by other libraries/executable and get | |
21309 | a different address. Resolve it by the minimal symbol | |
21310 | which may come from inferior's executable using copy | |
21311 | relocation. Make this workaround only for gfortran as for | |
21312 | other compilers GDB cannot guess the minimal symbol | |
21313 | Fortran mangling kind. */ | |
21314 | if (cu->language == language_fortran && die->parent | |
21315 | && die->parent->tag == DW_TAG_module | |
21316 | && cu->producer | |
28586665 | 21317 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21318 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21319 | |
1c809c68 TT |
21320 | /* A variable with DW_AT_external is never static, |
21321 | but it may be block-scoped. */ | |
21322 | list_to_add = (cu->list_in_scope == &file_symbols | |
21323 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 21324 | } |
c906108c | 21325 | else |
e37fd15a | 21326 | list_to_add = cu->list_in_scope; |
c906108c SS |
21327 | } |
21328 | else | |
21329 | { | |
21330 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21331 | If it is an external symbol and we have type information |
21332 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21333 | The address of the variable will then be determined from | |
21334 | the minimal symbol table whenever the variable is | |
21335 | referenced. */ | |
e142c38c | 21336 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21337 | |
21338 | /* Fortran explicitly imports any global symbols to the local | |
21339 | scope by DW_TAG_common_block. */ | |
21340 | if (cu->language == language_fortran && die->parent | |
21341 | && die->parent->tag == DW_TAG_common_block) | |
21342 | { | |
21343 | /* SYMBOL_CLASS doesn't matter here because | |
21344 | read_common_block is going to reset it. */ | |
21345 | if (!suppress_add) | |
21346 | list_to_add = cu->list_in_scope; | |
21347 | } | |
21348 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21349 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21350 | { |
0fe7935b DJ |
21351 | /* A variable with DW_AT_external is never static, but it |
21352 | may be block-scoped. */ | |
21353 | list_to_add = (cu->list_in_scope == &file_symbols | |
21354 | ? &global_symbols : cu->list_in_scope); | |
21355 | ||
f1e6e072 | 21356 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21357 | } |
442ddf59 JK |
21358 | else if (!die_is_declaration (die, cu)) |
21359 | { | |
21360 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21361 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21362 | if (!suppress_add) |
21363 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21364 | } |
c906108c SS |
21365 | } |
21366 | break; | |
21367 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
21368 | /* If we are inside a function, mark this as an argument. If |
21369 | not, we might be looking at an argument to an inlined function | |
21370 | when we do not have enough information to show inlined frames; | |
21371 | pretend it's a local variable in that case so that the user can | |
21372 | still see it. */ | |
21373 | if (context_stack_depth > 0 | |
21374 | && context_stack[context_stack_depth - 1].name != NULL) | |
21375 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 21376 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21377 | if (attr) |
21378 | { | |
e7c27a73 | 21379 | var_decode_location (attr, sym, cu); |
c906108c | 21380 | } |
e142c38c | 21381 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21382 | if (attr) |
21383 | { | |
e7c27a73 | 21384 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21385 | } |
f346a30d | 21386 | |
e37fd15a | 21387 | list_to_add = cu->list_in_scope; |
c906108c SS |
21388 | break; |
21389 | case DW_TAG_unspecified_parameters: | |
21390 | /* From varargs functions; gdb doesn't seem to have any | |
21391 | interest in this information, so just ignore it for now. | |
21392 | (FIXME?) */ | |
21393 | break; | |
34eaf542 TT |
21394 | case DW_TAG_template_type_param: |
21395 | suppress_add = 1; | |
21396 | /* Fall through. */ | |
c906108c | 21397 | case DW_TAG_class_type: |
680b30c7 | 21398 | case DW_TAG_interface_type: |
c906108c SS |
21399 | case DW_TAG_structure_type: |
21400 | case DW_TAG_union_type: | |
72019c9c | 21401 | case DW_TAG_set_type: |
c906108c | 21402 | case DW_TAG_enumeration_type: |
f1e6e072 | 21403 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21404 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21405 | |
63d06c5c | 21406 | { |
9c37b5ae | 21407 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21408 | really ever be static objects: otherwise, if you try |
21409 | to, say, break of a class's method and you're in a file | |
21410 | which doesn't mention that class, it won't work unless | |
21411 | the check for all static symbols in lookup_symbol_aux | |
21412 | saves you. See the OtherFileClass tests in | |
21413 | gdb.c++/namespace.exp. */ | |
21414 | ||
e37fd15a | 21415 | if (!suppress_add) |
34eaf542 | 21416 | { |
34eaf542 | 21417 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21418 | && cu->language == language_cplus |
34eaf542 | 21419 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21420 | |
64382290 | 21421 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21422 | ... }" also defines a typedef for "foo". */ |
64382290 | 21423 | if (cu->language == language_cplus |
45280282 | 21424 | || cu->language == language_ada |
c44af4eb TT |
21425 | || cu->language == language_d |
21426 | || cu->language == language_rust) | |
64382290 TT |
21427 | { |
21428 | /* The symbol's name is already allocated along | |
21429 | with this objfile, so we don't need to | |
21430 | duplicate it for the type. */ | |
21431 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21432 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21433 | } | |
63d06c5c DC |
21434 | } |
21435 | } | |
c906108c SS |
21436 | break; |
21437 | case DW_TAG_typedef: | |
f1e6e072 | 21438 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21439 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21440 | list_to_add = cu->list_in_scope; |
63d06c5c | 21441 | break; |
c906108c | 21442 | case DW_TAG_base_type: |
a02abb62 | 21443 | case DW_TAG_subrange_type: |
f1e6e072 | 21444 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21445 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21446 | list_to_add = cu->list_in_scope; |
c906108c SS |
21447 | break; |
21448 | case DW_TAG_enumerator: | |
e142c38c | 21449 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21450 | if (attr) |
21451 | { | |
e7c27a73 | 21452 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21453 | } |
63d06c5c DC |
21454 | { |
21455 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21456 | DW_TAG_class_type, etc. block. */ | |
21457 | ||
e142c38c | 21458 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21459 | && cu->language == language_cplus |
e142c38c | 21460 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21461 | } |
c906108c | 21462 | break; |
74921315 | 21463 | case DW_TAG_imported_declaration: |
5c4e30ca | 21464 | case DW_TAG_namespace: |
f1e6e072 | 21465 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 21466 | list_to_add = &global_symbols; |
5c4e30ca | 21467 | break; |
530e8392 KB |
21468 | case DW_TAG_module: |
21469 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21470 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
21471 | list_to_add = &global_symbols; | |
21472 | break; | |
4357ac6c | 21473 | case DW_TAG_common_block: |
f1e6e072 | 21474 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
21475 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
21476 | add_symbol_to_list (sym, cu->list_in_scope); | |
21477 | break; | |
c906108c SS |
21478 | default: |
21479 | /* Not a tag we recognize. Hopefully we aren't processing | |
21480 | trash data, but since we must specifically ignore things | |
21481 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21482 | this point. */ |
e2e0b3e5 | 21483 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 21484 | dwarf_tag_name (die->tag)); |
c906108c SS |
21485 | break; |
21486 | } | |
df8a16a1 | 21487 | |
e37fd15a SW |
21488 | if (suppress_add) |
21489 | { | |
21490 | sym->hash_next = objfile->template_symbols; | |
21491 | objfile->template_symbols = sym; | |
21492 | list_to_add = NULL; | |
21493 | } | |
21494 | ||
21495 | if (list_to_add != NULL) | |
21496 | add_symbol_to_list (sym, list_to_add); | |
21497 | ||
df8a16a1 DJ |
21498 | /* For the benefit of old versions of GCC, check for anonymous |
21499 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21500 | if (!cu->processing_has_namespace_info |
94af9270 | 21501 | && cu->language == language_cplus) |
a10964d1 | 21502 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
21503 | } |
21504 | return (sym); | |
21505 | } | |
21506 | ||
34eaf542 TT |
21507 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
21508 | ||
21509 | static struct symbol * | |
21510 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
21511 | { | |
21512 | return new_symbol_full (die, type, cu, NULL); | |
21513 | } | |
21514 | ||
98bfdba5 PA |
21515 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21516 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21517 | standard (v4) is not entirely clear about the meaning of using | |
21518 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21519 | wider than the data. The conclusion of a discussion on the DWARF | |
21520 | list was that this is unspecified. We choose to always zero-extend | |
21521 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21522 | |
98bfdba5 | 21523 | static gdb_byte * |
ff39bb5e | 21524 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21525 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21526 | { |
e7c27a73 | 21527 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
21528 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21529 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21530 | LONGEST l = DW_UNSND (attr); |
21531 | ||
21532 | if (bits < sizeof (*value) * 8) | |
21533 | { | |
21534 | l &= ((LONGEST) 1 << bits) - 1; | |
21535 | *value = l; | |
21536 | } | |
21537 | else if (bits == sizeof (*value) * 8) | |
21538 | *value = l; | |
21539 | else | |
21540 | { | |
224c3ddb | 21541 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21542 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21543 | return bytes; | |
21544 | } | |
21545 | ||
21546 | return NULL; | |
21547 | } | |
21548 | ||
21549 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21550 | the value does not fit in *VALUE, set *BYTES - either already | |
21551 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21552 | or, set *BATON, if we translated the constant to a location | |
21553 | expression. */ | |
21554 | ||
21555 | static void | |
ff39bb5e | 21556 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21557 | const char *name, struct obstack *obstack, |
21558 | struct dwarf2_cu *cu, | |
d521ce57 | 21559 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21560 | struct dwarf2_locexpr_baton **baton) |
21561 | { | |
21562 | struct objfile *objfile = cu->objfile; | |
21563 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 21564 | struct dwarf_block *blk; |
98bfdba5 PA |
21565 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21566 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21567 | ||
21568 | *value = 0; | |
21569 | *bytes = NULL; | |
21570 | *baton = NULL; | |
c906108c SS |
21571 | |
21572 | switch (attr->form) | |
21573 | { | |
21574 | case DW_FORM_addr: | |
3019eac3 | 21575 | case DW_FORM_GNU_addr_index: |
ac56253d | 21576 | { |
ac56253d TT |
21577 | gdb_byte *data; |
21578 | ||
98bfdba5 PA |
21579 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21580 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21581 | cu_header->addr_size, |
98bfdba5 | 21582 | TYPE_LENGTH (type)); |
ac56253d TT |
21583 | /* Symbols of this form are reasonably rare, so we just |
21584 | piggyback on the existing location code rather than writing | |
21585 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21586 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21587 | (*baton)->per_cu = cu->per_cu; |
21588 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21589 | |
98bfdba5 | 21590 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21591 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21592 | (*baton)->data = data; |
ac56253d TT |
21593 | |
21594 | data[0] = DW_OP_addr; | |
21595 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21596 | byte_order, DW_ADDR (attr)); | |
21597 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21598 | } |
c906108c | 21599 | break; |
4ac36638 | 21600 | case DW_FORM_string: |
93b5768b | 21601 | case DW_FORM_strp: |
3019eac3 | 21602 | case DW_FORM_GNU_str_index: |
36586728 | 21603 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21604 | /* DW_STRING is already allocated on the objfile obstack, point |
21605 | directly to it. */ | |
d521ce57 | 21606 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21607 | break; |
c906108c SS |
21608 | case DW_FORM_block1: |
21609 | case DW_FORM_block2: | |
21610 | case DW_FORM_block4: | |
21611 | case DW_FORM_block: | |
2dc7f7b3 | 21612 | case DW_FORM_exprloc: |
0224619f | 21613 | case DW_FORM_data16: |
c906108c | 21614 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21615 | if (TYPE_LENGTH (type) != blk->size) |
21616 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21617 | TYPE_LENGTH (type)); | |
21618 | *bytes = blk->data; | |
c906108c | 21619 | break; |
2df3850c JM |
21620 | |
21621 | /* The DW_AT_const_value attributes are supposed to carry the | |
21622 | symbol's value "represented as it would be on the target | |
21623 | architecture." By the time we get here, it's already been | |
21624 | converted to host endianness, so we just need to sign- or | |
21625 | zero-extend it as appropriate. */ | |
21626 | case DW_FORM_data1: | |
3aef2284 | 21627 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21628 | break; |
c906108c | 21629 | case DW_FORM_data2: |
3aef2284 | 21630 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21631 | break; |
c906108c | 21632 | case DW_FORM_data4: |
3aef2284 | 21633 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21634 | break; |
c906108c | 21635 | case DW_FORM_data8: |
3aef2284 | 21636 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21637 | break; |
21638 | ||
c906108c | 21639 | case DW_FORM_sdata: |
663c44ac | 21640 | case DW_FORM_implicit_const: |
98bfdba5 | 21641 | *value = DW_SND (attr); |
2df3850c JM |
21642 | break; |
21643 | ||
c906108c | 21644 | case DW_FORM_udata: |
98bfdba5 | 21645 | *value = DW_UNSND (attr); |
c906108c | 21646 | break; |
2df3850c | 21647 | |
c906108c | 21648 | default: |
4d3c2250 | 21649 | complaint (&symfile_complaints, |
e2e0b3e5 | 21650 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21651 | dwarf_form_name (attr->form)); |
98bfdba5 | 21652 | *value = 0; |
c906108c SS |
21653 | break; |
21654 | } | |
21655 | } | |
21656 | ||
2df3850c | 21657 | |
98bfdba5 PA |
21658 | /* Copy constant value from an attribute to a symbol. */ |
21659 | ||
2df3850c | 21660 | static void |
ff39bb5e | 21661 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21662 | struct dwarf2_cu *cu) |
2df3850c | 21663 | { |
98bfdba5 | 21664 | struct objfile *objfile = cu->objfile; |
12df843f | 21665 | LONGEST value; |
d521ce57 | 21666 | const gdb_byte *bytes; |
98bfdba5 | 21667 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21668 | |
98bfdba5 PA |
21669 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21670 | SYMBOL_PRINT_NAME (sym), | |
21671 | &objfile->objfile_obstack, cu, | |
21672 | &value, &bytes, &baton); | |
2df3850c | 21673 | |
98bfdba5 PA |
21674 | if (baton != NULL) |
21675 | { | |
98bfdba5 | 21676 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21677 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21678 | } |
21679 | else if (bytes != NULL) | |
21680 | { | |
21681 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21682 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21683 | } |
21684 | else | |
21685 | { | |
21686 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21687 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21688 | } |
2df3850c JM |
21689 | } |
21690 | ||
c906108c SS |
21691 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21692 | ||
21693 | static struct type * | |
e7c27a73 | 21694 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21695 | { |
c906108c | 21696 | struct attribute *type_attr; |
c906108c | 21697 | |
e142c38c | 21698 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21699 | if (!type_attr) |
21700 | { | |
21701 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 21702 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 21703 | } |
348e048f | 21704 | |
673bfd45 | 21705 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21706 | } |
21707 | ||
b4ba55a1 JB |
21708 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21709 | that allows to find parallel types through that information instead | |
21710 | of having to do expensive parallel lookups by type name. */ | |
21711 | ||
21712 | static int | |
21713 | need_gnat_info (struct dwarf2_cu *cu) | |
21714 | { | |
21715 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
21716 | of GNAT produces this auxiliary information, without any indication | |
21717 | that it is produced. Part of enhancing the FSF version of GNAT | |
21718 | to produce that information will be to put in place an indicator | |
21719 | that we can use in order to determine whether the descriptive type | |
21720 | info is available or not. One suggestion that has been made is | |
21721 | to use a new attribute, attached to the CU die. For now, assume | |
21722 | that the descriptive type info is not available. */ | |
21723 | return 0; | |
21724 | } | |
21725 | ||
b4ba55a1 JB |
21726 | /* Return the auxiliary type of the die in question using its |
21727 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21728 | attribute is not present. */ | |
21729 | ||
21730 | static struct type * | |
21731 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21732 | { | |
b4ba55a1 | 21733 | struct attribute *type_attr; |
b4ba55a1 JB |
21734 | |
21735 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21736 | if (!type_attr) | |
21737 | return NULL; | |
21738 | ||
673bfd45 | 21739 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21740 | } |
21741 | ||
21742 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21743 | descriptive type accordingly. */ | |
21744 | ||
21745 | static void | |
21746 | set_descriptive_type (struct type *type, struct die_info *die, | |
21747 | struct dwarf2_cu *cu) | |
21748 | { | |
21749 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21750 | ||
21751 | if (descriptive_type) | |
21752 | { | |
21753 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21754 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21755 | } | |
21756 | } | |
21757 | ||
c906108c SS |
21758 | /* Return the containing type of the die in question using its |
21759 | DW_AT_containing_type attribute. */ | |
21760 | ||
21761 | static struct type * | |
e7c27a73 | 21762 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21763 | { |
c906108c | 21764 | struct attribute *type_attr; |
c906108c | 21765 | |
e142c38c | 21766 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21767 | if (!type_attr) |
21768 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 21769 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 21770 | |
673bfd45 | 21771 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21772 | } |
21773 | ||
ac9ec31b DE |
21774 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21775 | ||
21776 | static struct type * | |
21777 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21778 | { | |
21779 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
21780 | char *message, *saved; | |
21781 | ||
21782 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 21783 | objfile_name (objfile), |
9c541725 PA |
21784 | to_underlying (cu->header.sect_off), |
21785 | to_underlying (die->sect_off)); | |
224c3ddb SM |
21786 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
21787 | message, strlen (message)); | |
ac9ec31b DE |
21788 | xfree (message); |
21789 | ||
19f392bc | 21790 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21791 | } |
21792 | ||
673bfd45 | 21793 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21794 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21795 | DW_AT_containing_type. | |
673bfd45 DE |
21796 | If there is no type substitute an error marker. */ |
21797 | ||
c906108c | 21798 | static struct type * |
ff39bb5e | 21799 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21800 | struct dwarf2_cu *cu) |
c906108c | 21801 | { |
bb5ed363 | 21802 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
21803 | struct type *this_type; |
21804 | ||
ac9ec31b DE |
21805 | gdb_assert (attr->name == DW_AT_type |
21806 | || attr->name == DW_AT_GNAT_descriptive_type | |
21807 | || attr->name == DW_AT_containing_type); | |
21808 | ||
673bfd45 DE |
21809 | /* First see if we have it cached. */ |
21810 | ||
36586728 TT |
21811 | if (attr->form == DW_FORM_GNU_ref_alt) |
21812 | { | |
21813 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21814 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21815 | |
9c541725 PA |
21816 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, cu->objfile); |
21817 | this_type = get_die_type_at_offset (sect_off, per_cu); | |
36586728 | 21818 | } |
7771576e | 21819 | else if (attr_form_is_ref (attr)) |
673bfd45 | 21820 | { |
9c541725 | 21821 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21822 | |
9c541725 | 21823 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21824 | } |
55f1336d | 21825 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21826 | { |
ac9ec31b | 21827 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21828 | |
ac9ec31b | 21829 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21830 | } |
21831 | else | |
21832 | { | |
ac9ec31b DE |
21833 | complaint (&symfile_complaints, |
21834 | _("Dwarf Error: Bad type attribute %s in DIE" | |
21835 | " at 0x%x [in module %s]"), | |
9c541725 | 21836 | dwarf_attr_name (attr->name), to_underlying (die->sect_off), |
4262abfb | 21837 | objfile_name (objfile)); |
ac9ec31b | 21838 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21839 | } |
21840 | ||
21841 | /* If not cached we need to read it in. */ | |
21842 | ||
21843 | if (this_type == NULL) | |
21844 | { | |
ac9ec31b | 21845 | struct die_info *type_die = NULL; |
673bfd45 DE |
21846 | struct dwarf2_cu *type_cu = cu; |
21847 | ||
7771576e | 21848 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
21849 | type_die = follow_die_ref (die, attr, &type_cu); |
21850 | if (type_die == NULL) | |
21851 | return build_error_marker_type (cu, die); | |
21852 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21853 | from an inter-CU reference and the type's CU got expanded before |
21854 | ours. */ | |
ac9ec31b | 21855 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21856 | } |
21857 | ||
21858 | /* If we still don't have a type use an error marker. */ | |
21859 | ||
21860 | if (this_type == NULL) | |
ac9ec31b | 21861 | return build_error_marker_type (cu, die); |
673bfd45 | 21862 | |
f792889a | 21863 | return this_type; |
c906108c SS |
21864 | } |
21865 | ||
673bfd45 DE |
21866 | /* Return the type in DIE, CU. |
21867 | Returns NULL for invalid types. | |
21868 | ||
02142a6c | 21869 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21870 | and only reads the die in if necessary. |
21871 | ||
21872 | NOTE: This can be called when reading in partial or full symbols. */ | |
21873 | ||
f792889a | 21874 | static struct type * |
e7c27a73 | 21875 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21876 | { |
f792889a DJ |
21877 | struct type *this_type; |
21878 | ||
21879 | this_type = get_die_type (die, cu); | |
21880 | if (this_type) | |
21881 | return this_type; | |
21882 | ||
673bfd45 DE |
21883 | return read_type_die_1 (die, cu); |
21884 | } | |
21885 | ||
21886 | /* Read the type in DIE, CU. | |
21887 | Returns NULL for invalid types. */ | |
21888 | ||
21889 | static struct type * | |
21890 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21891 | { | |
21892 | struct type *this_type = NULL; | |
21893 | ||
c906108c SS |
21894 | switch (die->tag) |
21895 | { | |
21896 | case DW_TAG_class_type: | |
680b30c7 | 21897 | case DW_TAG_interface_type: |
c906108c SS |
21898 | case DW_TAG_structure_type: |
21899 | case DW_TAG_union_type: | |
f792889a | 21900 | this_type = read_structure_type (die, cu); |
c906108c SS |
21901 | break; |
21902 | case DW_TAG_enumeration_type: | |
f792889a | 21903 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21904 | break; |
21905 | case DW_TAG_subprogram: | |
21906 | case DW_TAG_subroutine_type: | |
edb3359d | 21907 | case DW_TAG_inlined_subroutine: |
f792889a | 21908 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21909 | break; |
21910 | case DW_TAG_array_type: | |
f792889a | 21911 | this_type = read_array_type (die, cu); |
c906108c | 21912 | break; |
72019c9c | 21913 | case DW_TAG_set_type: |
f792889a | 21914 | this_type = read_set_type (die, cu); |
72019c9c | 21915 | break; |
c906108c | 21916 | case DW_TAG_pointer_type: |
f792889a | 21917 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21918 | break; |
21919 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21920 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21921 | break; |
21922 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21923 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21924 | break; | |
21925 | case DW_TAG_rvalue_reference_type: | |
21926 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21927 | break; |
21928 | case DW_TAG_const_type: | |
f792889a | 21929 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21930 | break; |
21931 | case DW_TAG_volatile_type: | |
f792889a | 21932 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21933 | break; |
06d66ee9 TT |
21934 | case DW_TAG_restrict_type: |
21935 | this_type = read_tag_restrict_type (die, cu); | |
21936 | break; | |
c906108c | 21937 | case DW_TAG_string_type: |
f792889a | 21938 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21939 | break; |
21940 | case DW_TAG_typedef: | |
f792889a | 21941 | this_type = read_typedef (die, cu); |
c906108c | 21942 | break; |
a02abb62 | 21943 | case DW_TAG_subrange_type: |
f792889a | 21944 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21945 | break; |
c906108c | 21946 | case DW_TAG_base_type: |
f792889a | 21947 | this_type = read_base_type (die, cu); |
c906108c | 21948 | break; |
81a17f79 | 21949 | case DW_TAG_unspecified_type: |
f792889a | 21950 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21951 | break; |
0114d602 DJ |
21952 | case DW_TAG_namespace: |
21953 | this_type = read_namespace_type (die, cu); | |
21954 | break; | |
f55ee35c JK |
21955 | case DW_TAG_module: |
21956 | this_type = read_module_type (die, cu); | |
21957 | break; | |
a2c2acaf MW |
21958 | case DW_TAG_atomic_type: |
21959 | this_type = read_tag_atomic_type (die, cu); | |
21960 | break; | |
c906108c | 21961 | default: |
3e43a32a MS |
21962 | complaint (&symfile_complaints, |
21963 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 21964 | dwarf_tag_name (die->tag)); |
c906108c SS |
21965 | break; |
21966 | } | |
63d06c5c | 21967 | |
f792889a | 21968 | return this_type; |
63d06c5c DC |
21969 | } |
21970 | ||
abc72ce4 DE |
21971 | /* See if we can figure out if the class lives in a namespace. We do |
21972 | this by looking for a member function; its demangled name will | |
21973 | contain namespace info, if there is any. | |
21974 | Return the computed name or NULL. | |
21975 | Space for the result is allocated on the objfile's obstack. | |
21976 | This is the full-die version of guess_partial_die_structure_name. | |
21977 | In this case we know DIE has no useful parent. */ | |
21978 | ||
21979 | static char * | |
21980 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
21981 | { | |
21982 | struct die_info *spec_die; | |
21983 | struct dwarf2_cu *spec_cu; | |
21984 | struct die_info *child; | |
21985 | ||
21986 | spec_cu = cu; | |
21987 | spec_die = die_specification (die, &spec_cu); | |
21988 | if (spec_die != NULL) | |
21989 | { | |
21990 | die = spec_die; | |
21991 | cu = spec_cu; | |
21992 | } | |
21993 | ||
21994 | for (child = die->child; | |
21995 | child != NULL; | |
21996 | child = child->sibling) | |
21997 | { | |
21998 | if (child->tag == DW_TAG_subprogram) | |
21999 | { | |
73b9be8b | 22000 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22001 | |
7d45c7c3 | 22002 | if (linkage_name != NULL) |
abc72ce4 DE |
22003 | { |
22004 | char *actual_name | |
22005 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22006 | linkage_name); |
abc72ce4 DE |
22007 | char *name = NULL; |
22008 | ||
22009 | if (actual_name != NULL) | |
22010 | { | |
15d034d0 | 22011 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22012 | |
22013 | if (die_name != NULL | |
22014 | && strcmp (die_name, actual_name) != 0) | |
22015 | { | |
22016 | /* Strip off the class name from the full name. | |
22017 | We want the prefix. */ | |
22018 | int die_name_len = strlen (die_name); | |
22019 | int actual_name_len = strlen (actual_name); | |
22020 | ||
22021 | /* Test for '::' as a sanity check. */ | |
22022 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22023 | && actual_name[actual_name_len |
22024 | - die_name_len - 1] == ':') | |
224c3ddb SM |
22025 | name = (char *) obstack_copy0 ( |
22026 | &cu->objfile->per_bfd->storage_obstack, | |
22027 | actual_name, actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
22028 | } |
22029 | } | |
22030 | xfree (actual_name); | |
22031 | return name; | |
22032 | } | |
22033 | } | |
22034 | } | |
22035 | ||
22036 | return NULL; | |
22037 | } | |
22038 | ||
96408a79 SA |
22039 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22040 | prefix part in such case. See | |
22041 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22042 | ||
a121b7c1 | 22043 | static const char * |
96408a79 SA |
22044 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22045 | { | |
22046 | struct attribute *attr; | |
e6a959d6 | 22047 | const char *base; |
96408a79 SA |
22048 | |
22049 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22050 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22051 | return NULL; | |
22052 | ||
7d45c7c3 | 22053 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22054 | return NULL; |
22055 | ||
73b9be8b | 22056 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22057 | if (attr == NULL || DW_STRING (attr) == NULL) |
22058 | return NULL; | |
22059 | ||
22060 | /* dwarf2_name had to be already called. */ | |
22061 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22062 | ||
22063 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22064 | base = strrchr (DW_STRING (attr), ':'); | |
22065 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22066 | return ""; | |
22067 | ||
224c3ddb SM |
22068 | return (char *) obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
22069 | DW_STRING (attr), | |
22070 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22071 | } |
22072 | ||
fdde2d81 | 22073 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22074 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22075 | |
0114d602 DJ |
22076 | For example, if we're within the method foo() in the following |
22077 | code: | |
22078 | ||
22079 | namespace N { | |
22080 | class C { | |
22081 | void foo () { | |
22082 | } | |
22083 | }; | |
22084 | } | |
22085 | ||
22086 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22087 | |
0d5cff50 | 22088 | static const char * |
e142c38c | 22089 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22090 | { |
0114d602 DJ |
22091 | struct die_info *parent, *spec_die; |
22092 | struct dwarf2_cu *spec_cu; | |
22093 | struct type *parent_type; | |
a121b7c1 | 22094 | const char *retval; |
63d06c5c | 22095 | |
9c37b5ae | 22096 | if (cu->language != language_cplus |
c44af4eb TT |
22097 | && cu->language != language_fortran && cu->language != language_d |
22098 | && cu->language != language_rust) | |
0114d602 DJ |
22099 | return ""; |
22100 | ||
96408a79 SA |
22101 | retval = anonymous_struct_prefix (die, cu); |
22102 | if (retval) | |
22103 | return retval; | |
22104 | ||
0114d602 DJ |
22105 | /* We have to be careful in the presence of DW_AT_specification. |
22106 | For example, with GCC 3.4, given the code | |
22107 | ||
22108 | namespace N { | |
22109 | void foo() { | |
22110 | // Definition of N::foo. | |
22111 | } | |
22112 | } | |
22113 | ||
22114 | then we'll have a tree of DIEs like this: | |
22115 | ||
22116 | 1: DW_TAG_compile_unit | |
22117 | 2: DW_TAG_namespace // N | |
22118 | 3: DW_TAG_subprogram // declaration of N::foo | |
22119 | 4: DW_TAG_subprogram // definition of N::foo | |
22120 | DW_AT_specification // refers to die #3 | |
22121 | ||
22122 | Thus, when processing die #4, we have to pretend that we're in | |
22123 | the context of its DW_AT_specification, namely the contex of die | |
22124 | #3. */ | |
22125 | spec_cu = cu; | |
22126 | spec_die = die_specification (die, &spec_cu); | |
22127 | if (spec_die == NULL) | |
22128 | parent = die->parent; | |
22129 | else | |
63d06c5c | 22130 | { |
0114d602 DJ |
22131 | parent = spec_die->parent; |
22132 | cu = spec_cu; | |
63d06c5c | 22133 | } |
0114d602 DJ |
22134 | |
22135 | if (parent == NULL) | |
22136 | return ""; | |
98bfdba5 PA |
22137 | else if (parent->building_fullname) |
22138 | { | |
22139 | const char *name; | |
22140 | const char *parent_name; | |
22141 | ||
22142 | /* It has been seen on RealView 2.2 built binaries, | |
22143 | DW_TAG_template_type_param types actually _defined_ as | |
22144 | children of the parent class: | |
22145 | ||
22146 | enum E {}; | |
22147 | template class <class Enum> Class{}; | |
22148 | Class<enum E> class_e; | |
22149 | ||
22150 | 1: DW_TAG_class_type (Class) | |
22151 | 2: DW_TAG_enumeration_type (E) | |
22152 | 3: DW_TAG_enumerator (enum1:0) | |
22153 | 3: DW_TAG_enumerator (enum2:1) | |
22154 | ... | |
22155 | 2: DW_TAG_template_type_param | |
22156 | DW_AT_type DW_FORM_ref_udata (E) | |
22157 | ||
22158 | Besides being broken debug info, it can put GDB into an | |
22159 | infinite loop. Consider: | |
22160 | ||
22161 | When we're building the full name for Class<E>, we'll start | |
22162 | at Class, and go look over its template type parameters, | |
22163 | finding E. We'll then try to build the full name of E, and | |
22164 | reach here. We're now trying to build the full name of E, | |
22165 | and look over the parent DIE for containing scope. In the | |
22166 | broken case, if we followed the parent DIE of E, we'd again | |
22167 | find Class, and once again go look at its template type | |
22168 | arguments, etc., etc. Simply don't consider such parent die | |
22169 | as source-level parent of this die (it can't be, the language | |
22170 | doesn't allow it), and break the loop here. */ | |
22171 | name = dwarf2_name (die, cu); | |
22172 | parent_name = dwarf2_name (parent, cu); | |
22173 | complaint (&symfile_complaints, | |
22174 | _("template param type '%s' defined within parent '%s'"), | |
22175 | name ? name : "<unknown>", | |
22176 | parent_name ? parent_name : "<unknown>"); | |
22177 | return ""; | |
22178 | } | |
63d06c5c | 22179 | else |
0114d602 DJ |
22180 | switch (parent->tag) |
22181 | { | |
63d06c5c | 22182 | case DW_TAG_namespace: |
0114d602 | 22183 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22184 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22185 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22186 | Work around this problem here. */ | |
22187 | if (cu->language == language_cplus | |
22188 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
22189 | return ""; | |
0114d602 DJ |
22190 | /* We give a name to even anonymous namespaces. */ |
22191 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 22192 | case DW_TAG_class_type: |
680b30c7 | 22193 | case DW_TAG_interface_type: |
63d06c5c | 22194 | case DW_TAG_structure_type: |
0114d602 | 22195 | case DW_TAG_union_type: |
f55ee35c | 22196 | case DW_TAG_module: |
0114d602 DJ |
22197 | parent_type = read_type_die (parent, cu); |
22198 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22199 | return TYPE_TAG_NAME (parent_type); | |
22200 | else | |
22201 | /* An anonymous structure is only allowed non-static data | |
22202 | members; no typedefs, no member functions, et cetera. | |
22203 | So it does not need a prefix. */ | |
22204 | return ""; | |
abc72ce4 | 22205 | case DW_TAG_compile_unit: |
95554aad | 22206 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22207 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22208 | if (cu->language == language_cplus | |
8b70b953 | 22209 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22210 | && die->child != NULL |
22211 | && (die->tag == DW_TAG_class_type | |
22212 | || die->tag == DW_TAG_structure_type | |
22213 | || die->tag == DW_TAG_union_type)) | |
22214 | { | |
22215 | char *name = guess_full_die_structure_name (die, cu); | |
22216 | if (name != NULL) | |
22217 | return name; | |
22218 | } | |
22219 | return ""; | |
3d567982 TT |
22220 | case DW_TAG_enumeration_type: |
22221 | parent_type = read_type_die (parent, cu); | |
22222 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22223 | { | |
22224 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22225 | return TYPE_TAG_NAME (parent_type); | |
22226 | return ""; | |
22227 | } | |
22228 | /* Fall through. */ | |
63d06c5c | 22229 | default: |
8176b9b8 | 22230 | return determine_prefix (parent, cu); |
63d06c5c | 22231 | } |
63d06c5c DC |
22232 | } |
22233 | ||
3e43a32a MS |
22234 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22235 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22236 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22237 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22238 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22239 | |
f55ee35c | 22240 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22241 | |
22242 | static char * | |
f55ee35c JK |
22243 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22244 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22245 | { |
f55ee35c | 22246 | const char *lead = ""; |
5c315b68 | 22247 | const char *sep; |
63d06c5c | 22248 | |
3e43a32a MS |
22249 | if (suffix == NULL || suffix[0] == '\0' |
22250 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22251 | sep = ""; |
45280282 IB |
22252 | else if (cu->language == language_d) |
22253 | { | |
22254 | /* For D, the 'main' function could be defined in any module, but it | |
22255 | should never be prefixed. */ | |
22256 | if (strcmp (suffix, "D main") == 0) | |
22257 | { | |
22258 | prefix = ""; | |
22259 | sep = ""; | |
22260 | } | |
22261 | else | |
22262 | sep = "."; | |
22263 | } | |
f55ee35c JK |
22264 | else if (cu->language == language_fortran && physname) |
22265 | { | |
22266 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22267 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22268 | ||
22269 | lead = "__"; | |
22270 | sep = "_MOD_"; | |
22271 | } | |
987504bb JJ |
22272 | else |
22273 | sep = "::"; | |
63d06c5c | 22274 | |
6dd47d34 DE |
22275 | if (prefix == NULL) |
22276 | prefix = ""; | |
22277 | if (suffix == NULL) | |
22278 | suffix = ""; | |
22279 | ||
987504bb JJ |
22280 | if (obs == NULL) |
22281 | { | |
3e43a32a | 22282 | char *retval |
224c3ddb SM |
22283 | = ((char *) |
22284 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22285 | |
f55ee35c JK |
22286 | strcpy (retval, lead); |
22287 | strcat (retval, prefix); | |
6dd47d34 DE |
22288 | strcat (retval, sep); |
22289 | strcat (retval, suffix); | |
63d06c5c DC |
22290 | return retval; |
22291 | } | |
987504bb JJ |
22292 | else |
22293 | { | |
22294 | /* We have an obstack. */ | |
f55ee35c | 22295 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22296 | } |
63d06c5c DC |
22297 | } |
22298 | ||
c906108c SS |
22299 | /* Return sibling of die, NULL if no sibling. */ |
22300 | ||
f9aca02d | 22301 | static struct die_info * |
fba45db2 | 22302 | sibling_die (struct die_info *die) |
c906108c | 22303 | { |
639d11d3 | 22304 | return die->sibling; |
c906108c SS |
22305 | } |
22306 | ||
71c25dea TT |
22307 | /* Get name of a die, return NULL if not found. */ |
22308 | ||
15d034d0 TT |
22309 | static const char * |
22310 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22311 | struct obstack *obstack) |
22312 | { | |
22313 | if (name && cu->language == language_cplus) | |
22314 | { | |
2f408ecb | 22315 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22316 | |
2f408ecb | 22317 | if (!canon_name.empty ()) |
71c25dea | 22318 | { |
2f408ecb PA |
22319 | if (canon_name != name) |
22320 | name = (const char *) obstack_copy0 (obstack, | |
22321 | canon_name.c_str (), | |
22322 | canon_name.length ()); | |
71c25dea TT |
22323 | } |
22324 | } | |
22325 | ||
22326 | return name; | |
c906108c SS |
22327 | } |
22328 | ||
96553a0c DE |
22329 | /* Get name of a die, return NULL if not found. |
22330 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22331 | |
15d034d0 | 22332 | static const char * |
e142c38c | 22333 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22334 | { |
22335 | struct attribute *attr; | |
22336 | ||
e142c38c | 22337 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22338 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22339 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22340 | && die->tag != DW_TAG_class_type |
22341 | && die->tag != DW_TAG_interface_type | |
22342 | && die->tag != DW_TAG_structure_type | |
22343 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22344 | return NULL; |
22345 | ||
22346 | switch (die->tag) | |
22347 | { | |
22348 | case DW_TAG_compile_unit: | |
95554aad | 22349 | case DW_TAG_partial_unit: |
71c25dea TT |
22350 | /* Compilation units have a DW_AT_name that is a filename, not |
22351 | a source language identifier. */ | |
22352 | case DW_TAG_enumeration_type: | |
22353 | case DW_TAG_enumerator: | |
22354 | /* These tags always have simple identifiers already; no need | |
22355 | to canonicalize them. */ | |
22356 | return DW_STRING (attr); | |
907af001 | 22357 | |
96553a0c DE |
22358 | case DW_TAG_namespace: |
22359 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22360 | return DW_STRING (attr); | |
22361 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22362 | ||
907af001 UW |
22363 | case DW_TAG_class_type: |
22364 | case DW_TAG_interface_type: | |
22365 | case DW_TAG_structure_type: | |
22366 | case DW_TAG_union_type: | |
22367 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22368 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22369 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22370 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22371 | if (attr && DW_STRING (attr) |
61012eef GB |
22372 | && (startswith (DW_STRING (attr), "._") |
22373 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22374 | return NULL; |
53832f31 TT |
22375 | |
22376 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22377 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22378 | if (!attr || DW_STRING (attr) == NULL) | |
22379 | { | |
df5c6c50 | 22380 | char *demangled = NULL; |
53832f31 | 22381 | |
73b9be8b | 22382 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22383 | if (attr == NULL || DW_STRING (attr) == NULL) |
22384 | return NULL; | |
22385 | ||
df5c6c50 JK |
22386 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22387 | call for the same DIE. */ | |
22388 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22389 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22390 | |
22391 | if (demangled) | |
22392 | { | |
e6a959d6 | 22393 | const char *base; |
96408a79 | 22394 | |
53832f31 | 22395 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22396 | DW_STRING (attr) |
224c3ddb SM |
22397 | = ((const char *) |
22398 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
22399 | demangled, strlen (demangled))); | |
53832f31 TT |
22400 | DW_STRING_IS_CANONICAL (attr) = 1; |
22401 | xfree (demangled); | |
96408a79 SA |
22402 | |
22403 | /* Strip any leading namespaces/classes, keep only the base name. | |
22404 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22405 | base = strrchr (DW_STRING (attr), ':'); | |
22406 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22407 | return &base[1]; | |
22408 | else | |
22409 | return DW_STRING (attr); | |
53832f31 TT |
22410 | } |
22411 | } | |
907af001 UW |
22412 | break; |
22413 | ||
71c25dea | 22414 | default: |
907af001 UW |
22415 | break; |
22416 | } | |
22417 | ||
22418 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22419 | { | |
22420 | DW_STRING (attr) | |
22421 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 22422 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 22423 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22424 | } |
907af001 | 22425 | return DW_STRING (attr); |
9219021c DC |
22426 | } |
22427 | ||
22428 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22429 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22430 | containing the return value on output. */ | |
9219021c DC |
22431 | |
22432 | static struct die_info * | |
f2f0e013 | 22433 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22434 | { |
22435 | struct attribute *attr; | |
9219021c | 22436 | |
f2f0e013 | 22437 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22438 | if (attr == NULL) |
22439 | return NULL; | |
22440 | ||
f2f0e013 | 22441 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22442 | } |
22443 | ||
c906108c SS |
22444 | /* Convert a DIE tag into its string name. */ |
22445 | ||
f39c6ffd | 22446 | static const char * |
aa1ee363 | 22447 | dwarf_tag_name (unsigned tag) |
c906108c | 22448 | { |
f39c6ffd TT |
22449 | const char *name = get_DW_TAG_name (tag); |
22450 | ||
22451 | if (name == NULL) | |
22452 | return "DW_TAG_<unknown>"; | |
22453 | ||
22454 | return name; | |
c906108c SS |
22455 | } |
22456 | ||
22457 | /* Convert a DWARF attribute code into its string name. */ | |
22458 | ||
f39c6ffd | 22459 | static const char * |
aa1ee363 | 22460 | dwarf_attr_name (unsigned attr) |
c906108c | 22461 | { |
f39c6ffd TT |
22462 | const char *name; |
22463 | ||
c764a876 | 22464 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22465 | if (attr == DW_AT_MIPS_fde) |
22466 | return "DW_AT_MIPS_fde"; | |
22467 | #else | |
22468 | if (attr == DW_AT_HP_block_index) | |
22469 | return "DW_AT_HP_block_index"; | |
c764a876 | 22470 | #endif |
f39c6ffd TT |
22471 | |
22472 | name = get_DW_AT_name (attr); | |
22473 | ||
22474 | if (name == NULL) | |
22475 | return "DW_AT_<unknown>"; | |
22476 | ||
22477 | return name; | |
c906108c SS |
22478 | } |
22479 | ||
22480 | /* Convert a DWARF value form code into its string name. */ | |
22481 | ||
f39c6ffd | 22482 | static const char * |
aa1ee363 | 22483 | dwarf_form_name (unsigned form) |
c906108c | 22484 | { |
f39c6ffd TT |
22485 | const char *name = get_DW_FORM_name (form); |
22486 | ||
22487 | if (name == NULL) | |
22488 | return "DW_FORM_<unknown>"; | |
22489 | ||
22490 | return name; | |
c906108c SS |
22491 | } |
22492 | ||
a121b7c1 | 22493 | static const char * |
fba45db2 | 22494 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22495 | { |
22496 | if (mybool) | |
22497 | return "TRUE"; | |
22498 | else | |
22499 | return "FALSE"; | |
22500 | } | |
22501 | ||
22502 | /* Convert a DWARF type code into its string name. */ | |
22503 | ||
f39c6ffd | 22504 | static const char * |
aa1ee363 | 22505 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22506 | { |
f39c6ffd | 22507 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22508 | |
f39c6ffd TT |
22509 | if (name == NULL) |
22510 | return "DW_ATE_<unknown>"; | |
c906108c | 22511 | |
f39c6ffd | 22512 | return name; |
c906108c | 22513 | } |
c906108c | 22514 | |
f9aca02d | 22515 | static void |
d97bc12b | 22516 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22517 | { |
22518 | unsigned int i; | |
22519 | ||
d97bc12b DE |
22520 | print_spaces (indent, f); |
22521 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
9c541725 PA |
22522 | dwarf_tag_name (die->tag), die->abbrev, |
22523 | to_underlying (die->sect_off)); | |
d97bc12b DE |
22524 | |
22525 | if (die->parent != NULL) | |
22526 | { | |
22527 | print_spaces (indent, f); | |
22528 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
9c541725 | 22529 | to_underlying (die->parent->sect_off)); |
d97bc12b DE |
22530 | } |
22531 | ||
22532 | print_spaces (indent, f); | |
22533 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22534 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22535 | |
d97bc12b DE |
22536 | print_spaces (indent, f); |
22537 | fprintf_unfiltered (f, " attributes:\n"); | |
22538 | ||
c906108c SS |
22539 | for (i = 0; i < die->num_attrs; ++i) |
22540 | { | |
d97bc12b DE |
22541 | print_spaces (indent, f); |
22542 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22543 | dwarf_attr_name (die->attrs[i].name), |
22544 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22545 | |
c906108c SS |
22546 | switch (die->attrs[i].form) |
22547 | { | |
c906108c | 22548 | case DW_FORM_addr: |
3019eac3 | 22549 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22550 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22551 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22552 | break; |
22553 | case DW_FORM_block2: | |
22554 | case DW_FORM_block4: | |
22555 | case DW_FORM_block: | |
22556 | case DW_FORM_block1: | |
56eb65bd SP |
22557 | fprintf_unfiltered (f, "block: size %s", |
22558 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22559 | break; |
2dc7f7b3 | 22560 | case DW_FORM_exprloc: |
56eb65bd SP |
22561 | fprintf_unfiltered (f, "expression: size %s", |
22562 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22563 | break; |
0224619f JK |
22564 | case DW_FORM_data16: |
22565 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22566 | break; | |
4568ecf9 DE |
22567 | case DW_FORM_ref_addr: |
22568 | fprintf_unfiltered (f, "ref address: "); | |
22569 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22570 | break; | |
36586728 TT |
22571 | case DW_FORM_GNU_ref_alt: |
22572 | fprintf_unfiltered (f, "alt ref address: "); | |
22573 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22574 | break; | |
10b3939b DJ |
22575 | case DW_FORM_ref1: |
22576 | case DW_FORM_ref2: | |
22577 | case DW_FORM_ref4: | |
4568ecf9 DE |
22578 | case DW_FORM_ref8: |
22579 | case DW_FORM_ref_udata: | |
d97bc12b | 22580 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22581 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22582 | break; |
c906108c SS |
22583 | case DW_FORM_data1: |
22584 | case DW_FORM_data2: | |
22585 | case DW_FORM_data4: | |
ce5d95e1 | 22586 | case DW_FORM_data8: |
c906108c SS |
22587 | case DW_FORM_udata: |
22588 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22589 | fprintf_unfiltered (f, "constant: %s", |
22590 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22591 | break; |
2dc7f7b3 TT |
22592 | case DW_FORM_sec_offset: |
22593 | fprintf_unfiltered (f, "section offset: %s", | |
22594 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22595 | break; | |
55f1336d | 22596 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22597 | fprintf_unfiltered (f, "signature: %s", |
22598 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22599 | break; |
c906108c | 22600 | case DW_FORM_string: |
4bdf3d34 | 22601 | case DW_FORM_strp: |
43988095 | 22602 | case DW_FORM_line_strp: |
3019eac3 | 22603 | case DW_FORM_GNU_str_index: |
36586728 | 22604 | case DW_FORM_GNU_strp_alt: |
8285870a | 22605 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22606 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22607 | ? DW_STRING (&die->attrs[i]) : "", |
22608 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22609 | break; |
22610 | case DW_FORM_flag: | |
22611 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22612 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22613 | else |
d97bc12b | 22614 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22615 | break; |
2dc7f7b3 TT |
22616 | case DW_FORM_flag_present: |
22617 | fprintf_unfiltered (f, "flag: TRUE"); | |
22618 | break; | |
a8329558 | 22619 | case DW_FORM_indirect: |
0963b4bd MS |
22620 | /* The reader will have reduced the indirect form to |
22621 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22622 | fprintf_unfiltered (f, |
22623 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22624 | break; |
663c44ac JK |
22625 | case DW_FORM_implicit_const: |
22626 | fprintf_unfiltered (f, "constant: %s", | |
22627 | plongest (DW_SND (&die->attrs[i]))); | |
22628 | break; | |
c906108c | 22629 | default: |
d97bc12b | 22630 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22631 | die->attrs[i].form); |
d97bc12b | 22632 | break; |
c906108c | 22633 | } |
d97bc12b | 22634 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22635 | } |
22636 | } | |
22637 | ||
f9aca02d | 22638 | static void |
d97bc12b | 22639 | dump_die_for_error (struct die_info *die) |
c906108c | 22640 | { |
d97bc12b DE |
22641 | dump_die_shallow (gdb_stderr, 0, die); |
22642 | } | |
22643 | ||
22644 | static void | |
22645 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22646 | { | |
22647 | int indent = level * 4; | |
22648 | ||
22649 | gdb_assert (die != NULL); | |
22650 | ||
22651 | if (level >= max_level) | |
22652 | return; | |
22653 | ||
22654 | dump_die_shallow (f, indent, die); | |
22655 | ||
22656 | if (die->child != NULL) | |
c906108c | 22657 | { |
d97bc12b DE |
22658 | print_spaces (indent, f); |
22659 | fprintf_unfiltered (f, " Children:"); | |
22660 | if (level + 1 < max_level) | |
22661 | { | |
22662 | fprintf_unfiltered (f, "\n"); | |
22663 | dump_die_1 (f, level + 1, max_level, die->child); | |
22664 | } | |
22665 | else | |
22666 | { | |
3e43a32a MS |
22667 | fprintf_unfiltered (f, |
22668 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22669 | } |
22670 | } | |
22671 | ||
22672 | if (die->sibling != NULL && level > 0) | |
22673 | { | |
22674 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22675 | } |
22676 | } | |
22677 | ||
d97bc12b DE |
22678 | /* This is called from the pdie macro in gdbinit.in. |
22679 | It's not static so gcc will keep a copy callable from gdb. */ | |
22680 | ||
22681 | void | |
22682 | dump_die (struct die_info *die, int max_level) | |
22683 | { | |
22684 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22685 | } | |
22686 | ||
f9aca02d | 22687 | static void |
51545339 | 22688 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22689 | { |
51545339 | 22690 | void **slot; |
c906108c | 22691 | |
9c541725 PA |
22692 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22693 | to_underlying (die->sect_off), | |
b64f50a1 | 22694 | INSERT); |
51545339 DJ |
22695 | |
22696 | *slot = die; | |
c906108c SS |
22697 | } |
22698 | ||
b64f50a1 JK |
22699 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22700 | required kind. */ | |
22701 | ||
22702 | static sect_offset | |
ff39bb5e | 22703 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22704 | { |
7771576e | 22705 | if (attr_form_is_ref (attr)) |
9c541725 | 22706 | return (sect_offset) DW_UNSND (attr); |
93311388 DE |
22707 | |
22708 | complaint (&symfile_complaints, | |
22709 | _("unsupported die ref attribute form: '%s'"), | |
22710 | dwarf_form_name (attr->form)); | |
9c541725 | 22711 | return {}; |
c906108c SS |
22712 | } |
22713 | ||
43bbcdc2 PH |
22714 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22715 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22716 | |
43bbcdc2 | 22717 | static LONGEST |
ff39bb5e | 22718 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22719 | { |
663c44ac | 22720 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22721 | return DW_SND (attr); |
22722 | else if (attr->form == DW_FORM_udata | |
22723 | || attr->form == DW_FORM_data1 | |
22724 | || attr->form == DW_FORM_data2 | |
22725 | || attr->form == DW_FORM_data4 | |
22726 | || attr->form == DW_FORM_data8) | |
22727 | return DW_UNSND (attr); | |
22728 | else | |
22729 | { | |
0224619f | 22730 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
22731 | complaint (&symfile_complaints, |
22732 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
22733 | dwarf_form_name (attr->form)); |
22734 | return default_value; | |
22735 | } | |
22736 | } | |
22737 | ||
348e048f DE |
22738 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22739 | On entry *REF_CU is the CU of SRC_DIE. | |
22740 | On exit *REF_CU is the CU of the result. */ | |
22741 | ||
22742 | static struct die_info * | |
ff39bb5e | 22743 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22744 | struct dwarf2_cu **ref_cu) |
22745 | { | |
22746 | struct die_info *die; | |
22747 | ||
7771576e | 22748 | if (attr_form_is_ref (attr)) |
348e048f | 22749 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22750 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22751 | die = follow_die_sig (src_die, attr, ref_cu); |
22752 | else | |
22753 | { | |
22754 | dump_die_for_error (src_die); | |
22755 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 22756 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
22757 | } |
22758 | ||
22759 | return die; | |
03dd20cc DJ |
22760 | } |
22761 | ||
5c631832 | 22762 | /* Follow reference OFFSET. |
673bfd45 DE |
22763 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22764 | On exit *REF_CU is the CU of the result. | |
22765 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22766 | |
f9aca02d | 22767 | static struct die_info * |
9c541725 | 22768 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22769 | struct dwarf2_cu **ref_cu) |
c906108c | 22770 | { |
10b3939b | 22771 | struct die_info temp_die; |
f2f0e013 | 22772 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 22773 | |
348e048f DE |
22774 | gdb_assert (cu->per_cu != NULL); |
22775 | ||
98bfdba5 PA |
22776 | target_cu = cu; |
22777 | ||
3019eac3 | 22778 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22779 | { |
22780 | /* .debug_types CUs cannot reference anything outside their CU. | |
22781 | If they need to, they have to reference a signatured type via | |
55f1336d | 22782 | DW_FORM_ref_sig8. */ |
9c541725 | 22783 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22784 | return NULL; |
348e048f | 22785 | } |
36586728 | 22786 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22787 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22788 | { |
22789 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22790 | |
9c541725 | 22791 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
36586728 | 22792 | cu->objfile); |
03dd20cc DJ |
22793 | |
22794 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
22795 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
22796 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 22797 | |
10b3939b DJ |
22798 | target_cu = per_cu->cu; |
22799 | } | |
98bfdba5 PA |
22800 | else if (cu->dies == NULL) |
22801 | { | |
22802 | /* We're loading full DIEs during partial symbol reading. */ | |
22803 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 22804 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 22805 | } |
c906108c | 22806 | |
f2f0e013 | 22807 | *ref_cu = target_cu; |
9c541725 | 22808 | temp_die.sect_off = sect_off; |
9a3c8263 | 22809 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22810 | &temp_die, |
22811 | to_underlying (sect_off)); | |
5c631832 | 22812 | } |
10b3939b | 22813 | |
5c631832 JK |
22814 | /* Follow reference attribute ATTR of SRC_DIE. |
22815 | On entry *REF_CU is the CU of SRC_DIE. | |
22816 | On exit *REF_CU is the CU of the result. */ | |
22817 | ||
22818 | static struct die_info * | |
ff39bb5e | 22819 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22820 | struct dwarf2_cu **ref_cu) |
22821 | { | |
9c541725 | 22822 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22823 | struct dwarf2_cu *cu = *ref_cu; |
22824 | struct die_info *die; | |
22825 | ||
9c541725 | 22826 | die = follow_die_offset (sect_off, |
36586728 TT |
22827 | (attr->form == DW_FORM_GNU_ref_alt |
22828 | || cu->per_cu->is_dwz), | |
22829 | ref_cu); | |
5c631832 JK |
22830 | if (!die) |
22831 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
22832 | "at 0x%x [in module %s]"), | |
9c541725 | 22833 | to_underlying (sect_off), to_underlying (src_die->sect_off), |
4262abfb | 22834 | objfile_name (cu->objfile)); |
348e048f | 22835 | |
5c631832 JK |
22836 | return die; |
22837 | } | |
22838 | ||
9c541725 | 22839 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b JK |
22840 | Returned value is intended for DW_OP_call*. Returned |
22841 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
22842 | |
22843 | struct dwarf2_locexpr_baton | |
9c541725 | 22844 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
22845 | struct dwarf2_per_cu_data *per_cu, |
22846 | CORE_ADDR (*get_frame_pc) (void *baton), | |
22847 | void *baton) | |
5c631832 | 22848 | { |
918dd910 | 22849 | struct dwarf2_cu *cu; |
5c631832 JK |
22850 | struct die_info *die; |
22851 | struct attribute *attr; | |
22852 | struct dwarf2_locexpr_baton retval; | |
22853 | ||
8cf6f0b1 TT |
22854 | dw2_setup (per_cu->objfile); |
22855 | ||
918dd910 JK |
22856 | if (per_cu->cu == NULL) |
22857 | load_cu (per_cu); | |
22858 | cu = per_cu->cu; | |
cc12ce38 DE |
22859 | if (cu == NULL) |
22860 | { | |
22861 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22862 | Instead just throw an error, not much else we can do. */ | |
22863 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
9c541725 | 22864 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
cc12ce38 | 22865 | } |
918dd910 | 22866 | |
9c541725 | 22867 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 JK |
22868 | if (!die) |
22869 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
9c541725 | 22870 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
5c631832 JK |
22871 | |
22872 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22873 | if (!attr) | |
22874 | { | |
e103e986 JK |
22875 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22876 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22877 | |
e103e986 | 22878 | retval.data = NULL; |
5c631832 JK |
22879 | retval.size = 0; |
22880 | } | |
8cf6f0b1 TT |
22881 | else if (attr_form_is_section_offset (attr)) |
22882 | { | |
22883 | struct dwarf2_loclist_baton loclist_baton; | |
22884 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22885 | size_t size; | |
22886 | ||
22887 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22888 | ||
22889 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22890 | &size, pc); | |
22891 | retval.size = size; | |
22892 | } | |
5c631832 JK |
22893 | else |
22894 | { | |
22895 | if (!attr_form_is_block (attr)) | |
22896 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
22897 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
9c541725 | 22898 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
5c631832 JK |
22899 | |
22900 | retval.data = DW_BLOCK (attr)->data; | |
22901 | retval.size = DW_BLOCK (attr)->size; | |
22902 | } | |
22903 | retval.per_cu = cu->per_cu; | |
918dd910 | 22904 | |
918dd910 JK |
22905 | age_cached_comp_units (); |
22906 | ||
5c631832 | 22907 | return retval; |
348e048f DE |
22908 | } |
22909 | ||
8b9737bf TT |
22910 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
22911 | offset. */ | |
22912 | ||
22913 | struct dwarf2_locexpr_baton | |
22914 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
22915 | struct dwarf2_per_cu_data *per_cu, | |
22916 | CORE_ADDR (*get_frame_pc) (void *baton), | |
22917 | void *baton) | |
22918 | { | |
9c541725 | 22919 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22920 | |
9c541725 | 22921 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
22922 | } |
22923 | ||
b6807d98 TT |
22924 | /* Write a constant of a given type as target-ordered bytes into |
22925 | OBSTACK. */ | |
22926 | ||
22927 | static const gdb_byte * | |
22928 | write_constant_as_bytes (struct obstack *obstack, | |
22929 | enum bfd_endian byte_order, | |
22930 | struct type *type, | |
22931 | ULONGEST value, | |
22932 | LONGEST *len) | |
22933 | { | |
22934 | gdb_byte *result; | |
22935 | ||
22936 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22937 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22938 | store_unsigned_integer (result, *len, byte_order, value); |
22939 | ||
22940 | return result; | |
22941 | } | |
22942 | ||
22943 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
22944 | pointer to the constant bytes and set LEN to the length of the | |
22945 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
22946 | does not have a DW_AT_const_value, return NULL. */ | |
22947 | ||
22948 | const gdb_byte * | |
9c541725 | 22949 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
22950 | struct dwarf2_per_cu_data *per_cu, |
22951 | struct obstack *obstack, | |
22952 | LONGEST *len) | |
22953 | { | |
22954 | struct dwarf2_cu *cu; | |
22955 | struct die_info *die; | |
22956 | struct attribute *attr; | |
22957 | const gdb_byte *result = NULL; | |
22958 | struct type *type; | |
22959 | LONGEST value; | |
22960 | enum bfd_endian byte_order; | |
22961 | ||
22962 | dw2_setup (per_cu->objfile); | |
22963 | ||
22964 | if (per_cu->cu == NULL) | |
22965 | load_cu (per_cu); | |
22966 | cu = per_cu->cu; | |
cc12ce38 DE |
22967 | if (cu == NULL) |
22968 | { | |
22969 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22970 | Instead just throw an error, not much else we can do. */ | |
22971 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
9c541725 | 22972 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
cc12ce38 | 22973 | } |
b6807d98 | 22974 | |
9c541725 | 22975 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 TT |
22976 | if (!die) |
22977 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
9c541725 | 22978 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
b6807d98 TT |
22979 | |
22980 | ||
22981 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22982 | if (attr == NULL) | |
22983 | return NULL; | |
22984 | ||
22985 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
22986 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22987 | ||
22988 | switch (attr->form) | |
22989 | { | |
22990 | case DW_FORM_addr: | |
22991 | case DW_FORM_GNU_addr_index: | |
22992 | { | |
22993 | gdb_byte *tem; | |
22994 | ||
22995 | *len = cu->header.addr_size; | |
224c3ddb | 22996 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22997 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22998 | result = tem; | |
22999 | } | |
23000 | break; | |
23001 | case DW_FORM_string: | |
23002 | case DW_FORM_strp: | |
23003 | case DW_FORM_GNU_str_index: | |
23004 | case DW_FORM_GNU_strp_alt: | |
23005 | /* DW_STRING is already allocated on the objfile obstack, point | |
23006 | directly to it. */ | |
23007 | result = (const gdb_byte *) DW_STRING (attr); | |
23008 | *len = strlen (DW_STRING (attr)); | |
23009 | break; | |
23010 | case DW_FORM_block1: | |
23011 | case DW_FORM_block2: | |
23012 | case DW_FORM_block4: | |
23013 | case DW_FORM_block: | |
23014 | case DW_FORM_exprloc: | |
0224619f | 23015 | case DW_FORM_data16: |
b6807d98 TT |
23016 | result = DW_BLOCK (attr)->data; |
23017 | *len = DW_BLOCK (attr)->size; | |
23018 | break; | |
23019 | ||
23020 | /* The DW_AT_const_value attributes are supposed to carry the | |
23021 | symbol's value "represented as it would be on the target | |
23022 | architecture." By the time we get here, it's already been | |
23023 | converted to host endianness, so we just need to sign- or | |
23024 | zero-extend it as appropriate. */ | |
23025 | case DW_FORM_data1: | |
23026 | type = die_type (die, cu); | |
23027 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23028 | if (result == NULL) | |
23029 | result = write_constant_as_bytes (obstack, byte_order, | |
23030 | type, value, len); | |
23031 | break; | |
23032 | case DW_FORM_data2: | |
23033 | type = die_type (die, cu); | |
23034 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23035 | if (result == NULL) | |
23036 | result = write_constant_as_bytes (obstack, byte_order, | |
23037 | type, value, len); | |
23038 | break; | |
23039 | case DW_FORM_data4: | |
23040 | type = die_type (die, cu); | |
23041 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23042 | if (result == NULL) | |
23043 | result = write_constant_as_bytes (obstack, byte_order, | |
23044 | type, value, len); | |
23045 | break; | |
23046 | case DW_FORM_data8: | |
23047 | type = die_type (die, cu); | |
23048 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23049 | if (result == NULL) | |
23050 | result = write_constant_as_bytes (obstack, byte_order, | |
23051 | type, value, len); | |
23052 | break; | |
23053 | ||
23054 | case DW_FORM_sdata: | |
663c44ac | 23055 | case DW_FORM_implicit_const: |
b6807d98 TT |
23056 | type = die_type (die, cu); |
23057 | result = write_constant_as_bytes (obstack, byte_order, | |
23058 | type, DW_SND (attr), len); | |
23059 | break; | |
23060 | ||
23061 | case DW_FORM_udata: | |
23062 | type = die_type (die, cu); | |
23063 | result = write_constant_as_bytes (obstack, byte_order, | |
23064 | type, DW_UNSND (attr), len); | |
23065 | break; | |
23066 | ||
23067 | default: | |
23068 | complaint (&symfile_complaints, | |
23069 | _("unsupported const value attribute form: '%s'"), | |
23070 | dwarf_form_name (attr->form)); | |
23071 | break; | |
23072 | } | |
23073 | ||
23074 | return result; | |
23075 | } | |
23076 | ||
7942e96e AA |
23077 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23078 | valid type for this die is found. */ | |
23079 | ||
23080 | struct type * | |
9c541725 | 23081 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23082 | struct dwarf2_per_cu_data *per_cu) |
23083 | { | |
23084 | struct dwarf2_cu *cu; | |
23085 | struct die_info *die; | |
23086 | ||
23087 | dw2_setup (per_cu->objfile); | |
23088 | ||
23089 | if (per_cu->cu == NULL) | |
23090 | load_cu (per_cu); | |
23091 | cu = per_cu->cu; | |
23092 | if (!cu) | |
23093 | return NULL; | |
23094 | ||
9c541725 | 23095 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23096 | if (!die) |
23097 | return NULL; | |
23098 | ||
23099 | return die_type (die, cu); | |
23100 | } | |
23101 | ||
8a9b8146 TT |
23102 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23103 | PER_CU. */ | |
23104 | ||
23105 | struct type * | |
b64f50a1 | 23106 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23107 | struct dwarf2_per_cu_data *per_cu) |
23108 | { | |
8a9b8146 | 23109 | dw2_setup (per_cu->objfile); |
b64f50a1 | 23110 | |
9c541725 | 23111 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23112 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23113 | } |
23114 | ||
ac9ec31b | 23115 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23116 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23117 | On exit *REF_CU is the CU of the result. |
23118 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23119 | |
23120 | static struct die_info * | |
ac9ec31b DE |
23121 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23122 | struct dwarf2_cu **ref_cu) | |
348e048f | 23123 | { |
348e048f | 23124 | struct die_info temp_die; |
348e048f DE |
23125 | struct dwarf2_cu *sig_cu; |
23126 | struct die_info *die; | |
23127 | ||
ac9ec31b DE |
23128 | /* While it might be nice to assert sig_type->type == NULL here, |
23129 | we can get here for DW_AT_imported_declaration where we need | |
23130 | the DIE not the type. */ | |
348e048f DE |
23131 | |
23132 | /* If necessary, add it to the queue and load its DIEs. */ | |
23133 | ||
95554aad | 23134 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23135 | read_signatured_type (sig_type); |
348e048f | 23136 | |
348e048f | 23137 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23138 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23139 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23140 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23141 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23142 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23143 | if (die) |
23144 | { | |
796a7ff8 DE |
23145 | /* For .gdb_index version 7 keep track of included TUs. |
23146 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23147 | if (dwarf2_per_objfile->index_table != NULL | |
23148 | && dwarf2_per_objfile->index_table->version <= 7) | |
23149 | { | |
23150 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23151 | (*ref_cu)->per_cu->imported_symtabs, | |
23152 | sig_cu->per_cu); | |
23153 | } | |
23154 | ||
348e048f DE |
23155 | *ref_cu = sig_cu; |
23156 | return die; | |
23157 | } | |
23158 | ||
ac9ec31b DE |
23159 | return NULL; |
23160 | } | |
23161 | ||
23162 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23163 | On entry *REF_CU is the CU of SRC_DIE. | |
23164 | On exit *REF_CU is the CU of the result. | |
23165 | The result is the DIE of the type. | |
23166 | If the referenced type cannot be found an error is thrown. */ | |
23167 | ||
23168 | static struct die_info * | |
ff39bb5e | 23169 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23170 | struct dwarf2_cu **ref_cu) |
23171 | { | |
23172 | ULONGEST signature = DW_SIGNATURE (attr); | |
23173 | struct signatured_type *sig_type; | |
23174 | struct die_info *die; | |
23175 | ||
23176 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23177 | ||
a2ce51a0 | 23178 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23179 | /* sig_type will be NULL if the signatured type is missing from |
23180 | the debug info. */ | |
23181 | if (sig_type == NULL) | |
23182 | { | |
23183 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
23184 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23185 | hex_string (signature), to_underlying (src_die->sect_off), |
4262abfb | 23186 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
23187 | } |
23188 | ||
23189 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23190 | if (die == NULL) | |
23191 | { | |
23192 | dump_die_for_error (src_die); | |
23193 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
23194 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23195 | hex_string (signature), to_underlying (src_die->sect_off), |
4262abfb | 23196 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
23197 | } |
23198 | ||
23199 | return die; | |
23200 | } | |
23201 | ||
23202 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23203 | reading in and processing the type unit if necessary. */ | |
23204 | ||
23205 | static struct type * | |
23206 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23207 | struct dwarf2_cu *cu) | |
23208 | { | |
23209 | struct signatured_type *sig_type; | |
23210 | struct dwarf2_cu *type_cu; | |
23211 | struct die_info *type_die; | |
23212 | struct type *type; | |
23213 | ||
a2ce51a0 | 23214 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23215 | /* sig_type will be NULL if the signatured type is missing from |
23216 | the debug info. */ | |
23217 | if (sig_type == NULL) | |
23218 | { | |
23219 | complaint (&symfile_complaints, | |
23220 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
23221 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23222 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 23223 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23224 | return build_error_marker_type (cu, die); |
23225 | } | |
23226 | ||
23227 | /* If we already know the type we're done. */ | |
23228 | if (sig_type->type != NULL) | |
23229 | return sig_type->type; | |
23230 | ||
23231 | type_cu = cu; | |
23232 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23233 | if (type_die != NULL) | |
23234 | { | |
23235 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23236 | is created. This is important, for example, because for c++ classes | |
23237 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23238 | type = read_type_die (type_die, type_cu); | |
23239 | if (type == NULL) | |
23240 | { | |
23241 | complaint (&symfile_complaints, | |
23242 | _("Dwarf Error: Cannot build signatured type %s" | |
23243 | " referenced from DIE at 0x%x [in module %s]"), | |
9c541725 | 23244 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 23245 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23246 | type = build_error_marker_type (cu, die); |
23247 | } | |
23248 | } | |
23249 | else | |
23250 | { | |
23251 | complaint (&symfile_complaints, | |
23252 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
23253 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 23254 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 23255 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23256 | type = build_error_marker_type (cu, die); |
23257 | } | |
23258 | sig_type->type = type; | |
23259 | ||
23260 | return type; | |
23261 | } | |
23262 | ||
23263 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23264 | reading in and processing the type unit if necessary. */ | |
23265 | ||
23266 | static struct type * | |
ff39bb5e | 23267 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23268 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23269 | { |
23270 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23271 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23272 | { |
23273 | struct dwarf2_cu *type_cu = cu; | |
23274 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23275 | ||
23276 | return read_type_die (type_die, type_cu); | |
23277 | } | |
23278 | else if (attr->form == DW_FORM_ref_sig8) | |
23279 | { | |
23280 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23281 | } | |
23282 | else | |
23283 | { | |
23284 | complaint (&symfile_complaints, | |
23285 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
23286 | " at 0x%x [in module %s]"), | |
9c541725 | 23287 | dwarf_form_name (attr->form), to_underlying (die->sect_off), |
4262abfb | 23288 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23289 | return build_error_marker_type (cu, die); |
23290 | } | |
348e048f DE |
23291 | } |
23292 | ||
e5fe5e75 | 23293 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23294 | |
23295 | static void | |
e5fe5e75 | 23296 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23297 | { |
52dc124a | 23298 | struct signatured_type *sig_type; |
348e048f | 23299 | |
f4dc4d17 DE |
23300 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23301 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23302 | ||
6721b2ec DE |
23303 | /* We have the per_cu, but we need the signatured_type. |
23304 | Fortunately this is an easy translation. */ | |
23305 | gdb_assert (per_cu->is_debug_types); | |
23306 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23307 | |
6721b2ec | 23308 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23309 | |
52dc124a | 23310 | read_signatured_type (sig_type); |
348e048f | 23311 | |
6721b2ec | 23312 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23313 | } |
23314 | ||
dee91e82 DE |
23315 | /* die_reader_func for read_signatured_type. |
23316 | This is identical to load_full_comp_unit_reader, | |
23317 | but is kept separate for now. */ | |
348e048f DE |
23318 | |
23319 | static void | |
dee91e82 | 23320 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23321 | const gdb_byte *info_ptr, |
dee91e82 DE |
23322 | struct die_info *comp_unit_die, |
23323 | int has_children, | |
23324 | void *data) | |
348e048f | 23325 | { |
dee91e82 | 23326 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23327 | |
dee91e82 DE |
23328 | gdb_assert (cu->die_hash == NULL); |
23329 | cu->die_hash = | |
23330 | htab_create_alloc_ex (cu->header.length / 12, | |
23331 | die_hash, | |
23332 | die_eq, | |
23333 | NULL, | |
23334 | &cu->comp_unit_obstack, | |
23335 | hashtab_obstack_allocate, | |
23336 | dummy_obstack_deallocate); | |
348e048f | 23337 | |
dee91e82 DE |
23338 | if (has_children) |
23339 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23340 | &info_ptr, comp_unit_die); | |
23341 | cu->dies = comp_unit_die; | |
23342 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23343 | |
23344 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23345 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23346 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23347 | or we won't be able to build types correctly. |
23348 | Similarly, if we do not read the producer, we can not apply | |
23349 | producer-specific interpretation. */ | |
95554aad | 23350 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23351 | } |
348e048f | 23352 | |
3019eac3 DE |
23353 | /* Read in a signatured type and build its CU and DIEs. |
23354 | If the type is a stub for the real type in a DWO file, | |
23355 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23356 | |
23357 | static void | |
23358 | read_signatured_type (struct signatured_type *sig_type) | |
23359 | { | |
23360 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23361 | |
3019eac3 | 23362 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23363 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23364 | |
f4dc4d17 DE |
23365 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
23366 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 23367 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23368 | } |
23369 | ||
c906108c SS |
23370 | /* Decode simple location descriptions. |
23371 | Given a pointer to a dwarf block that defines a location, compute | |
23372 | the location and return the value. | |
23373 | ||
4cecd739 DJ |
23374 | NOTE drow/2003-11-18: This function is called in two situations |
23375 | now: for the address of static or global variables (partial symbols | |
23376 | only) and for offsets into structures which are expected to be | |
23377 | (more or less) constant. The partial symbol case should go away, | |
23378 | and only the constant case should remain. That will let this | |
23379 | function complain more accurately. A few special modes are allowed | |
23380 | without complaint for global variables (for instance, global | |
23381 | register values and thread-local values). | |
c906108c SS |
23382 | |
23383 | A location description containing no operations indicates that the | |
4cecd739 | 23384 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23385 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23386 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23387 | complaint. |
23388 | ||
23389 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23390 | |
23391 | static CORE_ADDR | |
e7c27a73 | 23392 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23393 | { |
e7c27a73 | 23394 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
23395 | size_t i; |
23396 | size_t size = blk->size; | |
d521ce57 | 23397 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23398 | CORE_ADDR stack[64]; |
23399 | int stacki; | |
23400 | unsigned int bytes_read, unsnd; | |
23401 | gdb_byte op; | |
c906108c | 23402 | |
21ae7a4d JK |
23403 | i = 0; |
23404 | stacki = 0; | |
23405 | stack[stacki] = 0; | |
23406 | stack[++stacki] = 0; | |
23407 | ||
23408 | while (i < size) | |
23409 | { | |
23410 | op = data[i++]; | |
23411 | switch (op) | |
23412 | { | |
23413 | case DW_OP_lit0: | |
23414 | case DW_OP_lit1: | |
23415 | case DW_OP_lit2: | |
23416 | case DW_OP_lit3: | |
23417 | case DW_OP_lit4: | |
23418 | case DW_OP_lit5: | |
23419 | case DW_OP_lit6: | |
23420 | case DW_OP_lit7: | |
23421 | case DW_OP_lit8: | |
23422 | case DW_OP_lit9: | |
23423 | case DW_OP_lit10: | |
23424 | case DW_OP_lit11: | |
23425 | case DW_OP_lit12: | |
23426 | case DW_OP_lit13: | |
23427 | case DW_OP_lit14: | |
23428 | case DW_OP_lit15: | |
23429 | case DW_OP_lit16: | |
23430 | case DW_OP_lit17: | |
23431 | case DW_OP_lit18: | |
23432 | case DW_OP_lit19: | |
23433 | case DW_OP_lit20: | |
23434 | case DW_OP_lit21: | |
23435 | case DW_OP_lit22: | |
23436 | case DW_OP_lit23: | |
23437 | case DW_OP_lit24: | |
23438 | case DW_OP_lit25: | |
23439 | case DW_OP_lit26: | |
23440 | case DW_OP_lit27: | |
23441 | case DW_OP_lit28: | |
23442 | case DW_OP_lit29: | |
23443 | case DW_OP_lit30: | |
23444 | case DW_OP_lit31: | |
23445 | stack[++stacki] = op - DW_OP_lit0; | |
23446 | break; | |
f1bea926 | 23447 | |
21ae7a4d JK |
23448 | case DW_OP_reg0: |
23449 | case DW_OP_reg1: | |
23450 | case DW_OP_reg2: | |
23451 | case DW_OP_reg3: | |
23452 | case DW_OP_reg4: | |
23453 | case DW_OP_reg5: | |
23454 | case DW_OP_reg6: | |
23455 | case DW_OP_reg7: | |
23456 | case DW_OP_reg8: | |
23457 | case DW_OP_reg9: | |
23458 | case DW_OP_reg10: | |
23459 | case DW_OP_reg11: | |
23460 | case DW_OP_reg12: | |
23461 | case DW_OP_reg13: | |
23462 | case DW_OP_reg14: | |
23463 | case DW_OP_reg15: | |
23464 | case DW_OP_reg16: | |
23465 | case DW_OP_reg17: | |
23466 | case DW_OP_reg18: | |
23467 | case DW_OP_reg19: | |
23468 | case DW_OP_reg20: | |
23469 | case DW_OP_reg21: | |
23470 | case DW_OP_reg22: | |
23471 | case DW_OP_reg23: | |
23472 | case DW_OP_reg24: | |
23473 | case DW_OP_reg25: | |
23474 | case DW_OP_reg26: | |
23475 | case DW_OP_reg27: | |
23476 | case DW_OP_reg28: | |
23477 | case DW_OP_reg29: | |
23478 | case DW_OP_reg30: | |
23479 | case DW_OP_reg31: | |
23480 | stack[++stacki] = op - DW_OP_reg0; | |
23481 | if (i < size) | |
23482 | dwarf2_complex_location_expr_complaint (); | |
23483 | break; | |
c906108c | 23484 | |
21ae7a4d JK |
23485 | case DW_OP_regx: |
23486 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23487 | i += bytes_read; | |
23488 | stack[++stacki] = unsnd; | |
23489 | if (i < size) | |
23490 | dwarf2_complex_location_expr_complaint (); | |
23491 | break; | |
c906108c | 23492 | |
21ae7a4d JK |
23493 | case DW_OP_addr: |
23494 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23495 | cu, &bytes_read); | |
23496 | i += bytes_read; | |
23497 | break; | |
d53d4ac5 | 23498 | |
21ae7a4d JK |
23499 | case DW_OP_const1u: |
23500 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23501 | i += 1; | |
23502 | break; | |
23503 | ||
23504 | case DW_OP_const1s: | |
23505 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23506 | i += 1; | |
23507 | break; | |
23508 | ||
23509 | case DW_OP_const2u: | |
23510 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23511 | i += 2; | |
23512 | break; | |
23513 | ||
23514 | case DW_OP_const2s: | |
23515 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23516 | i += 2; | |
23517 | break; | |
d53d4ac5 | 23518 | |
21ae7a4d JK |
23519 | case DW_OP_const4u: |
23520 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23521 | i += 4; | |
23522 | break; | |
23523 | ||
23524 | case DW_OP_const4s: | |
23525 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23526 | i += 4; | |
23527 | break; | |
23528 | ||
585861ea JK |
23529 | case DW_OP_const8u: |
23530 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23531 | i += 8; | |
23532 | break; | |
23533 | ||
21ae7a4d JK |
23534 | case DW_OP_constu: |
23535 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23536 | &bytes_read); | |
23537 | i += bytes_read; | |
23538 | break; | |
23539 | ||
23540 | case DW_OP_consts: | |
23541 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23542 | i += bytes_read; | |
23543 | break; | |
23544 | ||
23545 | case DW_OP_dup: | |
23546 | stack[stacki + 1] = stack[stacki]; | |
23547 | stacki++; | |
23548 | break; | |
23549 | ||
23550 | case DW_OP_plus: | |
23551 | stack[stacki - 1] += stack[stacki]; | |
23552 | stacki--; | |
23553 | break; | |
23554 | ||
23555 | case DW_OP_plus_uconst: | |
23556 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23557 | &bytes_read); | |
23558 | i += bytes_read; | |
23559 | break; | |
23560 | ||
23561 | case DW_OP_minus: | |
23562 | stack[stacki - 1] -= stack[stacki]; | |
23563 | stacki--; | |
23564 | break; | |
23565 | ||
23566 | case DW_OP_deref: | |
23567 | /* If we're not the last op, then we definitely can't encode | |
23568 | this using GDB's address_class enum. This is valid for partial | |
23569 | global symbols, although the variable's address will be bogus | |
23570 | in the psymtab. */ | |
23571 | if (i < size) | |
23572 | dwarf2_complex_location_expr_complaint (); | |
23573 | break; | |
23574 | ||
23575 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23576 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23577 | /* The top of the stack has the offset from the beginning |
23578 | of the thread control block at which the variable is located. */ | |
23579 | /* Nothing should follow this operator, so the top of stack would | |
23580 | be returned. */ | |
23581 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23582 | address will be bogus in the psymtab. Make it always at least |
23583 | non-zero to not look as a variable garbage collected by linker | |
23584 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23585 | if (i < size) |
23586 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23587 | stack[stacki]++; |
21ae7a4d JK |
23588 | break; |
23589 | ||
23590 | case DW_OP_GNU_uninit: | |
23591 | break; | |
23592 | ||
3019eac3 | 23593 | case DW_OP_GNU_addr_index: |
49f6c839 | 23594 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23595 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23596 | &bytes_read); | |
23597 | i += bytes_read; | |
23598 | break; | |
23599 | ||
21ae7a4d JK |
23600 | default: |
23601 | { | |
f39c6ffd | 23602 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23603 | |
23604 | if (name) | |
23605 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
23606 | name); | |
23607 | else | |
23608 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
23609 | op); | |
23610 | } | |
23611 | ||
23612 | return (stack[stacki]); | |
d53d4ac5 | 23613 | } |
3c6e0cb3 | 23614 | |
21ae7a4d JK |
23615 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23616 | outside of the allocated space. Also enforce minimum>0. */ | |
23617 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23618 | { | |
23619 | complaint (&symfile_complaints, | |
23620 | _("location description stack overflow")); | |
23621 | return 0; | |
23622 | } | |
23623 | ||
23624 | if (stacki <= 0) | |
23625 | { | |
23626 | complaint (&symfile_complaints, | |
23627 | _("location description stack underflow")); | |
23628 | return 0; | |
23629 | } | |
23630 | } | |
23631 | return (stack[stacki]); | |
c906108c SS |
23632 | } |
23633 | ||
23634 | /* memory allocation interface */ | |
23635 | ||
c906108c | 23636 | static struct dwarf_block * |
7b5a2f43 | 23637 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23638 | { |
8d749320 | 23639 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23640 | } |
23641 | ||
c906108c | 23642 | static struct die_info * |
b60c80d6 | 23643 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23644 | { |
23645 | struct die_info *die; | |
b60c80d6 DJ |
23646 | size_t size = sizeof (struct die_info); |
23647 | ||
23648 | if (num_attrs > 1) | |
23649 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23650 | |
b60c80d6 | 23651 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23652 | memset (die, 0, sizeof (struct die_info)); |
23653 | return (die); | |
23654 | } | |
2e276125 JB |
23655 | |
23656 | \f | |
23657 | /* Macro support. */ | |
23658 | ||
233d95b5 JK |
23659 | /* Return file name relative to the compilation directory of file number I in |
23660 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23661 | responsible for freeing it. */ |
233d95b5 | 23662 | |
2e276125 | 23663 | static char * |
233d95b5 | 23664 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23665 | { |
6a83a1e6 EZ |
23666 | /* Is the file number a valid index into the line header's file name |
23667 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23668 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23669 | { |
8c43009f | 23670 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23671 | |
8c43009f PA |
23672 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23673 | { | |
23674 | const char *dir = fe.include_dir (lh); | |
23675 | if (dir != NULL) | |
23676 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23677 | } | |
23678 | return xstrdup (fe.name); | |
6a83a1e6 | 23679 | } |
2e276125 JB |
23680 | else |
23681 | { | |
6a83a1e6 EZ |
23682 | /* The compiler produced a bogus file number. We can at least |
23683 | record the macro definitions made in the file, even if we | |
23684 | won't be able to find the file by name. */ | |
23685 | char fake_name[80]; | |
9a619af0 | 23686 | |
8c042590 PM |
23687 | xsnprintf (fake_name, sizeof (fake_name), |
23688 | "<bad macro file number %d>", file); | |
2e276125 | 23689 | |
6e70227d | 23690 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
23691 | _("bad file number in macro information (%d)"), |
23692 | file); | |
2e276125 | 23693 | |
6a83a1e6 | 23694 | return xstrdup (fake_name); |
2e276125 JB |
23695 | } |
23696 | } | |
23697 | ||
233d95b5 JK |
23698 | /* Return the full name of file number I in *LH's file name table. |
23699 | Use COMP_DIR as the name of the current directory of the | |
23700 | compilation. The result is allocated using xmalloc; the caller is | |
23701 | responsible for freeing it. */ | |
23702 | static char * | |
23703 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23704 | { | |
23705 | /* Is the file number a valid index into the line header's file name | |
23706 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23707 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23708 | { |
23709 | char *relative = file_file_name (file, lh); | |
23710 | ||
23711 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23712 | return relative; | |
b36cec19 PA |
23713 | return reconcat (relative, comp_dir, SLASH_STRING, |
23714 | relative, (char *) NULL); | |
233d95b5 JK |
23715 | } |
23716 | else | |
23717 | return file_file_name (file, lh); | |
23718 | } | |
23719 | ||
2e276125 JB |
23720 | |
23721 | static struct macro_source_file * | |
23722 | macro_start_file (int file, int line, | |
23723 | struct macro_source_file *current_file, | |
43f3e411 | 23724 | struct line_header *lh) |
2e276125 | 23725 | { |
233d95b5 JK |
23726 | /* File name relative to the compilation directory of this source file. */ |
23727 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23728 | |
2e276125 | 23729 | if (! current_file) |
abc9d0dc | 23730 | { |
fc474241 DE |
23731 | /* Note: We don't create a macro table for this compilation unit |
23732 | at all until we actually get a filename. */ | |
43f3e411 | 23733 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 23734 | |
abc9d0dc TT |
23735 | /* If we have no current file, then this must be the start_file |
23736 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23737 | current_file = macro_set_main (macro_table, file_name); |
23738 | macro_define_special (macro_table); | |
abc9d0dc | 23739 | } |
2e276125 | 23740 | else |
233d95b5 | 23741 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23742 | |
233d95b5 | 23743 | xfree (file_name); |
6e70227d | 23744 | |
2e276125 JB |
23745 | return current_file; |
23746 | } | |
23747 | ||
2e276125 JB |
23748 | static const char * |
23749 | consume_improper_spaces (const char *p, const char *body) | |
23750 | { | |
23751 | if (*p == ' ') | |
23752 | { | |
4d3c2250 | 23753 | complaint (&symfile_complaints, |
3e43a32a MS |
23754 | _("macro definition contains spaces " |
23755 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 23756 | body); |
2e276125 JB |
23757 | |
23758 | while (*p == ' ') | |
23759 | p++; | |
23760 | } | |
23761 | ||
23762 | return p; | |
23763 | } | |
23764 | ||
23765 | ||
23766 | static void | |
23767 | parse_macro_definition (struct macro_source_file *file, int line, | |
23768 | const char *body) | |
23769 | { | |
23770 | const char *p; | |
23771 | ||
23772 | /* The body string takes one of two forms. For object-like macro | |
23773 | definitions, it should be: | |
23774 | ||
23775 | <macro name> " " <definition> | |
23776 | ||
23777 | For function-like macro definitions, it should be: | |
23778 | ||
23779 | <macro name> "() " <definition> | |
23780 | or | |
23781 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23782 | ||
23783 | Spaces may appear only where explicitly indicated, and in the | |
23784 | <definition>. | |
23785 | ||
23786 | The Dwarf 2 spec says that an object-like macro's name is always | |
23787 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23788 | the space when the macro's definition is the empty string. |
2e276125 JB |
23789 | |
23790 | The Dwarf 2 spec says that there should be no spaces between the | |
23791 | formal arguments in a function-like macro's formal argument list, | |
23792 | but versions of GCC around March 2002 include spaces after the | |
23793 | commas. */ | |
23794 | ||
23795 | ||
23796 | /* Find the extent of the macro name. The macro name is terminated | |
23797 | by either a space or null character (for an object-like macro) or | |
23798 | an opening paren (for a function-like macro). */ | |
23799 | for (p = body; *p; p++) | |
23800 | if (*p == ' ' || *p == '(') | |
23801 | break; | |
23802 | ||
23803 | if (*p == ' ' || *p == '\0') | |
23804 | { | |
23805 | /* It's an object-like macro. */ | |
23806 | int name_len = p - body; | |
3f8a7804 | 23807 | char *name = savestring (body, name_len); |
2e276125 JB |
23808 | const char *replacement; |
23809 | ||
23810 | if (*p == ' ') | |
23811 | replacement = body + name_len + 1; | |
23812 | else | |
23813 | { | |
4d3c2250 | 23814 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23815 | replacement = body + name_len; |
23816 | } | |
6e70227d | 23817 | |
2e276125 JB |
23818 | macro_define_object (file, line, name, replacement); |
23819 | ||
23820 | xfree (name); | |
23821 | } | |
23822 | else if (*p == '(') | |
23823 | { | |
23824 | /* It's a function-like macro. */ | |
3f8a7804 | 23825 | char *name = savestring (body, p - body); |
2e276125 JB |
23826 | int argc = 0; |
23827 | int argv_size = 1; | |
8d749320 | 23828 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23829 | |
23830 | p++; | |
23831 | ||
23832 | p = consume_improper_spaces (p, body); | |
23833 | ||
23834 | /* Parse the formal argument list. */ | |
23835 | while (*p && *p != ')') | |
23836 | { | |
23837 | /* Find the extent of the current argument name. */ | |
23838 | const char *arg_start = p; | |
23839 | ||
23840 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23841 | p++; | |
23842 | ||
23843 | if (! *p || p == arg_start) | |
4d3c2250 | 23844 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23845 | else |
23846 | { | |
23847 | /* Make sure argv has room for the new argument. */ | |
23848 | if (argc >= argv_size) | |
23849 | { | |
23850 | argv_size *= 2; | |
224c3ddb | 23851 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
23852 | } |
23853 | ||
3f8a7804 | 23854 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
23855 | } |
23856 | ||
23857 | p = consume_improper_spaces (p, body); | |
23858 | ||
23859 | /* Consume the comma, if present. */ | |
23860 | if (*p == ',') | |
23861 | { | |
23862 | p++; | |
23863 | ||
23864 | p = consume_improper_spaces (p, body); | |
23865 | } | |
23866 | } | |
23867 | ||
23868 | if (*p == ')') | |
23869 | { | |
23870 | p++; | |
23871 | ||
23872 | if (*p == ' ') | |
23873 | /* Perfectly formed definition, no complaints. */ | |
23874 | macro_define_function (file, line, name, | |
6e70227d | 23875 | argc, (const char **) argv, |
2e276125 JB |
23876 | p + 1); |
23877 | else if (*p == '\0') | |
23878 | { | |
23879 | /* Complain, but do define it. */ | |
4d3c2250 | 23880 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 23881 | macro_define_function (file, line, name, |
6e70227d | 23882 | argc, (const char **) argv, |
2e276125 JB |
23883 | p); |
23884 | } | |
23885 | else | |
23886 | /* Just complain. */ | |
4d3c2250 | 23887 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23888 | } |
23889 | else | |
23890 | /* Just complain. */ | |
4d3c2250 | 23891 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23892 | |
23893 | xfree (name); | |
23894 | { | |
23895 | int i; | |
23896 | ||
23897 | for (i = 0; i < argc; i++) | |
23898 | xfree (argv[i]); | |
23899 | } | |
23900 | xfree (argv); | |
23901 | } | |
23902 | else | |
4d3c2250 | 23903 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23904 | } |
23905 | ||
cf2c3c16 TT |
23906 | /* Skip some bytes from BYTES according to the form given in FORM. |
23907 | Returns the new pointer. */ | |
2e276125 | 23908 | |
d521ce57 TT |
23909 | static const gdb_byte * |
23910 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
23911 | enum dwarf_form form, |
23912 | unsigned int offset_size, | |
23913 | struct dwarf2_section_info *section) | |
2e276125 | 23914 | { |
cf2c3c16 | 23915 | unsigned int bytes_read; |
2e276125 | 23916 | |
cf2c3c16 | 23917 | switch (form) |
2e276125 | 23918 | { |
cf2c3c16 TT |
23919 | case DW_FORM_data1: |
23920 | case DW_FORM_flag: | |
23921 | ++bytes; | |
23922 | break; | |
23923 | ||
23924 | case DW_FORM_data2: | |
23925 | bytes += 2; | |
23926 | break; | |
23927 | ||
23928 | case DW_FORM_data4: | |
23929 | bytes += 4; | |
23930 | break; | |
23931 | ||
23932 | case DW_FORM_data8: | |
23933 | bytes += 8; | |
23934 | break; | |
23935 | ||
0224619f JK |
23936 | case DW_FORM_data16: |
23937 | bytes += 16; | |
23938 | break; | |
23939 | ||
cf2c3c16 TT |
23940 | case DW_FORM_string: |
23941 | read_direct_string (abfd, bytes, &bytes_read); | |
23942 | bytes += bytes_read; | |
23943 | break; | |
23944 | ||
23945 | case DW_FORM_sec_offset: | |
23946 | case DW_FORM_strp: | |
36586728 | 23947 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
23948 | bytes += offset_size; |
23949 | break; | |
23950 | ||
23951 | case DW_FORM_block: | |
23952 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
23953 | bytes += bytes_read; | |
23954 | break; | |
23955 | ||
23956 | case DW_FORM_block1: | |
23957 | bytes += 1 + read_1_byte (abfd, bytes); | |
23958 | break; | |
23959 | case DW_FORM_block2: | |
23960 | bytes += 2 + read_2_bytes (abfd, bytes); | |
23961 | break; | |
23962 | case DW_FORM_block4: | |
23963 | bytes += 4 + read_4_bytes (abfd, bytes); | |
23964 | break; | |
23965 | ||
23966 | case DW_FORM_sdata: | |
23967 | case DW_FORM_udata: | |
3019eac3 DE |
23968 | case DW_FORM_GNU_addr_index: |
23969 | case DW_FORM_GNU_str_index: | |
d521ce57 | 23970 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
23971 | if (bytes == NULL) |
23972 | { | |
23973 | dwarf2_section_buffer_overflow_complaint (section); | |
23974 | return NULL; | |
23975 | } | |
cf2c3c16 TT |
23976 | break; |
23977 | ||
663c44ac JK |
23978 | case DW_FORM_implicit_const: |
23979 | break; | |
23980 | ||
cf2c3c16 TT |
23981 | default: |
23982 | { | |
cf2c3c16 TT |
23983 | complaint (&symfile_complaints, |
23984 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 23985 | form, get_section_name (section)); |
cf2c3c16 TT |
23986 | return NULL; |
23987 | } | |
2e276125 JB |
23988 | } |
23989 | ||
cf2c3c16 TT |
23990 | return bytes; |
23991 | } | |
757a13d0 | 23992 | |
cf2c3c16 TT |
23993 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
23994 | opcode. Returns an updated pointer to the macro data buffer; or, | |
23995 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 23996 | |
d521ce57 | 23997 | static const gdb_byte * |
cf2c3c16 | 23998 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
23999 | const gdb_byte **opcode_definitions, |
24000 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24001 | bfd *abfd, |
24002 | unsigned int offset_size, | |
24003 | struct dwarf2_section_info *section) | |
24004 | { | |
24005 | unsigned int bytes_read, i; | |
24006 | unsigned long arg; | |
d521ce57 | 24007 | const gdb_byte *defn; |
2e276125 | 24008 | |
cf2c3c16 | 24009 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24010 | { |
cf2c3c16 TT |
24011 | complaint (&symfile_complaints, |
24012 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
24013 | opcode); | |
24014 | return NULL; | |
24015 | } | |
2e276125 | 24016 | |
cf2c3c16 TT |
24017 | defn = opcode_definitions[opcode]; |
24018 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24019 | defn += bytes_read; | |
2e276125 | 24020 | |
cf2c3c16 TT |
24021 | for (i = 0; i < arg; ++i) |
24022 | { | |
aead7601 SM |
24023 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24024 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24025 | section); |
cf2c3c16 TT |
24026 | if (mac_ptr == NULL) |
24027 | { | |
24028 | /* skip_form_bytes already issued the complaint. */ | |
24029 | return NULL; | |
24030 | } | |
24031 | } | |
757a13d0 | 24032 | |
cf2c3c16 TT |
24033 | return mac_ptr; |
24034 | } | |
757a13d0 | 24035 | |
cf2c3c16 TT |
24036 | /* A helper function which parses the header of a macro section. |
24037 | If the macro section is the extended (for now called "GNU") type, | |
24038 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24039 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24040 | |
d521ce57 TT |
24041 | static const gdb_byte * |
24042 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24043 | bfd *abfd, |
d521ce57 | 24044 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24045 | unsigned int *offset_size, |
24046 | int section_is_gnu) | |
24047 | { | |
24048 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24049 | |
cf2c3c16 TT |
24050 | if (section_is_gnu) |
24051 | { | |
24052 | unsigned int version, flags; | |
757a13d0 | 24053 | |
cf2c3c16 | 24054 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24055 | if (version != 4 && version != 5) |
cf2c3c16 TT |
24056 | { |
24057 | complaint (&symfile_complaints, | |
24058 | _("unrecognized version `%d' in .debug_macro section"), | |
24059 | version); | |
24060 | return NULL; | |
24061 | } | |
24062 | mac_ptr += 2; | |
757a13d0 | 24063 | |
cf2c3c16 TT |
24064 | flags = read_1_byte (abfd, mac_ptr); |
24065 | ++mac_ptr; | |
24066 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24067 | |
cf2c3c16 TT |
24068 | if ((flags & 2) != 0) |
24069 | /* We don't need the line table offset. */ | |
24070 | mac_ptr += *offset_size; | |
757a13d0 | 24071 | |
cf2c3c16 TT |
24072 | /* Vendor opcode descriptions. */ |
24073 | if ((flags & 4) != 0) | |
24074 | { | |
24075 | unsigned int i, count; | |
757a13d0 | 24076 | |
cf2c3c16 TT |
24077 | count = read_1_byte (abfd, mac_ptr); |
24078 | ++mac_ptr; | |
24079 | for (i = 0; i < count; ++i) | |
24080 | { | |
24081 | unsigned int opcode, bytes_read; | |
24082 | unsigned long arg; | |
24083 | ||
24084 | opcode = read_1_byte (abfd, mac_ptr); | |
24085 | ++mac_ptr; | |
24086 | opcode_definitions[opcode] = mac_ptr; | |
24087 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24088 | mac_ptr += bytes_read; | |
24089 | mac_ptr += arg; | |
24090 | } | |
757a13d0 | 24091 | } |
cf2c3c16 | 24092 | } |
757a13d0 | 24093 | |
cf2c3c16 TT |
24094 | return mac_ptr; |
24095 | } | |
757a13d0 | 24096 | |
cf2c3c16 | 24097 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24098 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24099 | |
24100 | static void | |
d521ce57 TT |
24101 | dwarf_decode_macro_bytes (bfd *abfd, |
24102 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 24103 | struct macro_source_file *current_file, |
43f3e411 | 24104 | struct line_header *lh, |
cf2c3c16 | 24105 | struct dwarf2_section_info *section, |
36586728 | 24106 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24107 | unsigned int offset_size, |
8fc3fc34 | 24108 | htab_t include_hash) |
cf2c3c16 | 24109 | { |
4d663531 | 24110 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24111 | enum dwarf_macro_record_type macinfo_type; |
24112 | int at_commandline; | |
d521ce57 | 24113 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24114 | |
cf2c3c16 TT |
24115 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24116 | &offset_size, section_is_gnu); | |
24117 | if (mac_ptr == NULL) | |
24118 | { | |
24119 | /* We already issued a complaint. */ | |
24120 | return; | |
24121 | } | |
757a13d0 JK |
24122 | |
24123 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24124 | GDB is still reading the definitions from command line. First | |
24125 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24126 | to create CURRENT_FILE for the main source holding also the command line | |
24127 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24128 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24129 | ||
24130 | at_commandline = 1; | |
24131 | ||
24132 | do | |
24133 | { | |
24134 | /* Do we at least have room for a macinfo type byte? */ | |
24135 | if (mac_ptr >= mac_end) | |
24136 | { | |
f664829e | 24137 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24138 | break; |
24139 | } | |
24140 | ||
aead7601 | 24141 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24142 | mac_ptr++; |
24143 | ||
cf2c3c16 TT |
24144 | /* Note that we rely on the fact that the corresponding GNU and |
24145 | DWARF constants are the same. */ | |
757a13d0 JK |
24146 | switch (macinfo_type) |
24147 | { | |
24148 | /* A zero macinfo type indicates the end of the macro | |
24149 | information. */ | |
24150 | case 0: | |
24151 | break; | |
2e276125 | 24152 | |
0af92d60 JK |
24153 | case DW_MACRO_define: |
24154 | case DW_MACRO_undef: | |
24155 | case DW_MACRO_define_strp: | |
24156 | case DW_MACRO_undef_strp: | |
24157 | case DW_MACRO_define_sup: | |
24158 | case DW_MACRO_undef_sup: | |
2e276125 | 24159 | { |
891d2f0b | 24160 | unsigned int bytes_read; |
2e276125 | 24161 | int line; |
d521ce57 | 24162 | const char *body; |
cf2c3c16 | 24163 | int is_define; |
2e276125 | 24164 | |
cf2c3c16 TT |
24165 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24166 | mac_ptr += bytes_read; | |
24167 | ||
0af92d60 JK |
24168 | if (macinfo_type == DW_MACRO_define |
24169 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24170 | { |
24171 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24172 | mac_ptr += bytes_read; | |
24173 | } | |
24174 | else | |
24175 | { | |
24176 | LONGEST str_offset; | |
24177 | ||
24178 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24179 | mac_ptr += offset_size; | |
2e276125 | 24180 | |
0af92d60 JK |
24181 | if (macinfo_type == DW_MACRO_define_sup |
24182 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24183 | || section_is_dwz) |
36586728 TT |
24184 | { |
24185 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
24186 | ||
24187 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
24188 | } | |
24189 | else | |
24190 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
24191 | } |
24192 | ||
0af92d60 JK |
24193 | is_define = (macinfo_type == DW_MACRO_define |
24194 | || macinfo_type == DW_MACRO_define_strp | |
24195 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24196 | if (! current_file) |
757a13d0 JK |
24197 | { |
24198 | /* DWARF violation as no main source is present. */ | |
24199 | complaint (&symfile_complaints, | |
24200 | _("debug info with no main source gives macro %s " | |
24201 | "on line %d: %s"), | |
cf2c3c16 TT |
24202 | is_define ? _("definition") : _("undefinition"), |
24203 | line, body); | |
757a13d0 JK |
24204 | break; |
24205 | } | |
3e43a32a MS |
24206 | if ((line == 0 && !at_commandline) |
24207 | || (line != 0 && at_commandline)) | |
4d3c2250 | 24208 | complaint (&symfile_complaints, |
757a13d0 JK |
24209 | _("debug info gives %s macro %s with %s line %d: %s"), |
24210 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 24211 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24212 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24213 | ||
cf2c3c16 | 24214 | if (is_define) |
757a13d0 | 24215 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24216 | else |
24217 | { | |
0af92d60 JK |
24218 | gdb_assert (macinfo_type == DW_MACRO_undef |
24219 | || macinfo_type == DW_MACRO_undef_strp | |
24220 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24221 | macro_undef (current_file, line, body); |
24222 | } | |
2e276125 JB |
24223 | } |
24224 | break; | |
24225 | ||
0af92d60 | 24226 | case DW_MACRO_start_file: |
2e276125 | 24227 | { |
891d2f0b | 24228 | unsigned int bytes_read; |
2e276125 JB |
24229 | int line, file; |
24230 | ||
24231 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24232 | mac_ptr += bytes_read; | |
24233 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24234 | mac_ptr += bytes_read; | |
24235 | ||
3e43a32a MS |
24236 | if ((line == 0 && !at_commandline) |
24237 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
24238 | complaint (&symfile_complaints, |
24239 | _("debug info gives source %d included " | |
24240 | "from %s at %s line %d"), | |
24241 | file, at_commandline ? _("command-line") : _("file"), | |
24242 | line == 0 ? _("zero") : _("non-zero"), line); | |
24243 | ||
24244 | if (at_commandline) | |
24245 | { | |
0af92d60 | 24246 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24247 | pass one. */ |
757a13d0 JK |
24248 | at_commandline = 0; |
24249 | } | |
24250 | else | |
43f3e411 | 24251 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
24252 | } |
24253 | break; | |
24254 | ||
0af92d60 | 24255 | case DW_MACRO_end_file: |
2e276125 | 24256 | if (! current_file) |
4d3c2250 | 24257 | complaint (&symfile_complaints, |
3e43a32a MS |
24258 | _("macro debug info has an unmatched " |
24259 | "`close_file' directive")); | |
2e276125 JB |
24260 | else |
24261 | { | |
24262 | current_file = current_file->included_by; | |
24263 | if (! current_file) | |
24264 | { | |
cf2c3c16 | 24265 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24266 | |
24267 | /* GCC circa March 2002 doesn't produce the zero | |
24268 | type byte marking the end of the compilation | |
24269 | unit. Complain if it's not there, but exit no | |
24270 | matter what. */ | |
24271 | ||
24272 | /* Do we at least have room for a macinfo type byte? */ | |
24273 | if (mac_ptr >= mac_end) | |
24274 | { | |
f664829e | 24275 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24276 | return; |
24277 | } | |
24278 | ||
24279 | /* We don't increment mac_ptr here, so this is just | |
24280 | a look-ahead. */ | |
aead7601 SM |
24281 | next_type |
24282 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24283 | mac_ptr); | |
2e276125 | 24284 | if (next_type != 0) |
4d3c2250 | 24285 | complaint (&symfile_complaints, |
3e43a32a MS |
24286 | _("no terminating 0-type entry for " |
24287 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
24288 | |
24289 | return; | |
24290 | } | |
24291 | } | |
24292 | break; | |
24293 | ||
0af92d60 JK |
24294 | case DW_MACRO_import: |
24295 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24296 | { |
24297 | LONGEST offset; | |
8fc3fc34 | 24298 | void **slot; |
a036ba48 TT |
24299 | bfd *include_bfd = abfd; |
24300 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24301 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24302 | int is_dwz = section_is_dwz; |
d521ce57 | 24303 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24304 | |
24305 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24306 | mac_ptr += offset_size; | |
24307 | ||
0af92d60 | 24308 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 TT |
24309 | { |
24310 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
24311 | ||
4d663531 | 24312 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24313 | |
a036ba48 | 24314 | include_section = &dwz->macro; |
a32a8923 | 24315 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24316 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24317 | is_dwz = 1; | |
24318 | } | |
24319 | ||
24320 | new_mac_ptr = include_section->buffer + offset; | |
24321 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24322 | ||
8fc3fc34 TT |
24323 | if (*slot != NULL) |
24324 | { | |
24325 | /* This has actually happened; see | |
24326 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
24327 | complaint (&symfile_complaints, | |
0af92d60 | 24328 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24329 | ".debug_macro section")); |
24330 | } | |
24331 | else | |
24332 | { | |
d521ce57 | 24333 | *slot = (void *) new_mac_ptr; |
36586728 | 24334 | |
a036ba48 | 24335 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 24336 | include_mac_end, current_file, lh, |
36586728 | 24337 | section, section_is_gnu, is_dwz, |
4d663531 | 24338 | offset_size, include_hash); |
8fc3fc34 | 24339 | |
d521ce57 | 24340 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24341 | } |
cf2c3c16 TT |
24342 | } |
24343 | break; | |
24344 | ||
2e276125 | 24345 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24346 | if (!section_is_gnu) |
24347 | { | |
24348 | unsigned int bytes_read; | |
2e276125 | 24349 | |
ac298888 TT |
24350 | /* This reads the constant, but since we don't recognize |
24351 | any vendor extensions, we ignore it. */ | |
24352 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24353 | mac_ptr += bytes_read; |
24354 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24355 | mac_ptr += bytes_read; | |
2e276125 | 24356 | |
cf2c3c16 TT |
24357 | /* We don't recognize any vendor extensions. */ |
24358 | break; | |
24359 | } | |
24360 | /* FALLTHROUGH */ | |
24361 | ||
24362 | default: | |
24363 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24364 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24365 | section); |
24366 | if (mac_ptr == NULL) | |
24367 | return; | |
24368 | break; | |
2e276125 | 24369 | } |
757a13d0 | 24370 | } while (macinfo_type != 0); |
2e276125 | 24371 | } |
8e19ed76 | 24372 | |
cf2c3c16 | 24373 | static void |
09262596 | 24374 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24375 | int section_is_gnu) |
cf2c3c16 | 24376 | { |
bb5ed363 | 24377 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24378 | struct line_header *lh = cu->line_header; |
24379 | bfd *abfd; | |
d521ce57 | 24380 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24381 | struct macro_source_file *current_file = 0; |
24382 | enum dwarf_macro_record_type macinfo_type; | |
24383 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24384 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24385 | void **slot; |
09262596 DE |
24386 | struct dwarf2_section_info *section; |
24387 | const char *section_name; | |
24388 | ||
24389 | if (cu->dwo_unit != NULL) | |
24390 | { | |
24391 | if (section_is_gnu) | |
24392 | { | |
24393 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24394 | section_name = ".debug_macro.dwo"; | |
24395 | } | |
24396 | else | |
24397 | { | |
24398 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24399 | section_name = ".debug_macinfo.dwo"; | |
24400 | } | |
24401 | } | |
24402 | else | |
24403 | { | |
24404 | if (section_is_gnu) | |
24405 | { | |
24406 | section = &dwarf2_per_objfile->macro; | |
24407 | section_name = ".debug_macro"; | |
24408 | } | |
24409 | else | |
24410 | { | |
24411 | section = &dwarf2_per_objfile->macinfo; | |
24412 | section_name = ".debug_macinfo"; | |
24413 | } | |
24414 | } | |
cf2c3c16 | 24415 | |
bb5ed363 | 24416 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24417 | if (section->buffer == NULL) |
24418 | { | |
fceca515 | 24419 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
24420 | return; |
24421 | } | |
a32a8923 | 24422 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24423 | |
24424 | /* First pass: Find the name of the base filename. | |
24425 | This filename is needed in order to process all macros whose definition | |
24426 | (or undefinition) comes from the command line. These macros are defined | |
24427 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24428 | associated to the base file. | |
24429 | ||
24430 | To determine the base file name, we scan the macro definitions until we | |
24431 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24432 | CURRENT_FILE accordingly so that any macro definition found before the | |
24433 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24434 | ||
24435 | mac_ptr = section->buffer + offset; | |
24436 | mac_end = section->buffer + section->size; | |
24437 | ||
24438 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24439 | &offset_size, section_is_gnu); | |
24440 | if (mac_ptr == NULL) | |
24441 | { | |
24442 | /* We already issued a complaint. */ | |
24443 | return; | |
24444 | } | |
24445 | ||
24446 | do | |
24447 | { | |
24448 | /* Do we at least have room for a macinfo type byte? */ | |
24449 | if (mac_ptr >= mac_end) | |
24450 | { | |
24451 | /* Complaint is printed during the second pass as GDB will probably | |
24452 | stop the first pass earlier upon finding | |
24453 | DW_MACINFO_start_file. */ | |
24454 | break; | |
24455 | } | |
24456 | ||
aead7601 | 24457 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24458 | mac_ptr++; |
24459 | ||
24460 | /* Note that we rely on the fact that the corresponding GNU and | |
24461 | DWARF constants are the same. */ | |
24462 | switch (macinfo_type) | |
24463 | { | |
24464 | /* A zero macinfo type indicates the end of the macro | |
24465 | information. */ | |
24466 | case 0: | |
24467 | break; | |
24468 | ||
0af92d60 JK |
24469 | case DW_MACRO_define: |
24470 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24471 | /* Only skip the data by MAC_PTR. */ |
24472 | { | |
24473 | unsigned int bytes_read; | |
24474 | ||
24475 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24476 | mac_ptr += bytes_read; | |
24477 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24478 | mac_ptr += bytes_read; | |
24479 | } | |
24480 | break; | |
24481 | ||
0af92d60 | 24482 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24483 | { |
24484 | unsigned int bytes_read; | |
24485 | int line, file; | |
24486 | ||
24487 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24488 | mac_ptr += bytes_read; | |
24489 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24490 | mac_ptr += bytes_read; | |
24491 | ||
43f3e411 | 24492 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
24493 | } |
24494 | break; | |
24495 | ||
0af92d60 | 24496 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24497 | /* No data to skip by MAC_PTR. */ |
24498 | break; | |
24499 | ||
0af92d60 JK |
24500 | case DW_MACRO_define_strp: |
24501 | case DW_MACRO_undef_strp: | |
24502 | case DW_MACRO_define_sup: | |
24503 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24504 | { |
24505 | unsigned int bytes_read; | |
24506 | ||
24507 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24508 | mac_ptr += bytes_read; | |
24509 | mac_ptr += offset_size; | |
24510 | } | |
24511 | break; | |
24512 | ||
0af92d60 JK |
24513 | case DW_MACRO_import: |
24514 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24515 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24516 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24517 | skip this opcode. */ |
24518 | mac_ptr += offset_size; | |
24519 | break; | |
24520 | ||
24521 | case DW_MACINFO_vendor_ext: | |
24522 | /* Only skip the data by MAC_PTR. */ | |
24523 | if (!section_is_gnu) | |
24524 | { | |
24525 | unsigned int bytes_read; | |
24526 | ||
24527 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24528 | mac_ptr += bytes_read; | |
24529 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24530 | mac_ptr += bytes_read; | |
24531 | } | |
24532 | /* FALLTHROUGH */ | |
24533 | ||
24534 | default: | |
24535 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24536 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24537 | section); |
24538 | if (mac_ptr == NULL) | |
24539 | return; | |
24540 | break; | |
24541 | } | |
24542 | } while (macinfo_type != 0 && current_file == NULL); | |
24543 | ||
24544 | /* Second pass: Process all entries. | |
24545 | ||
24546 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24547 | command-line macro definitions/undefinitions. This flag is unset when we | |
24548 | reach the first DW_MACINFO_start_file entry. */ | |
24549 | ||
fc4007c9 TT |
24550 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24551 | htab_eq_pointer, | |
24552 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24553 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24554 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24555 | *slot = (void *) mac_ptr; |
8fc3fc34 | 24556 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 24557 | current_file, lh, section, |
fc4007c9 TT |
24558 | section_is_gnu, 0, offset_size, |
24559 | include_hash.get ()); | |
cf2c3c16 TT |
24560 | } |
24561 | ||
8e19ed76 | 24562 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24563 | if so return true else false. */ |
380bca97 | 24564 | |
8e19ed76 | 24565 | static int |
6e5a29e1 | 24566 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24567 | { |
24568 | return (attr == NULL ? 0 : | |
24569 | attr->form == DW_FORM_block1 | |
24570 | || attr->form == DW_FORM_block2 | |
24571 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24572 | || attr->form == DW_FORM_block |
24573 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24574 | } |
4c2df51b | 24575 | |
c6a0999f JB |
24576 | /* Return non-zero if ATTR's value is a section offset --- classes |
24577 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24578 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24579 | ||
24580 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24581 | may have a value that belongs to more than one of these classes; it | |
24582 | would be ambiguous if we did, because we use the same forms for all | |
24583 | of them. */ | |
380bca97 | 24584 | |
3690dd37 | 24585 | static int |
6e5a29e1 | 24586 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24587 | { |
24588 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24589 | || attr->form == DW_FORM_data8 |
24590 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24591 | } |
24592 | ||
3690dd37 JB |
24593 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24594 | zero otherwise. When this function returns true, you can apply | |
24595 | dwarf2_get_attr_constant_value to it. | |
24596 | ||
24597 | However, note that for some attributes you must check | |
24598 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24599 | and DW_FORM_data8 are members of both the constant class, and of | |
24600 | the classes that contain offsets into other debug sections | |
24601 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24602 | that, if an attribute's can be either a constant or one of the | |
24603 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24604 | taken as section offsets, not constants. |
24605 | ||
24606 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24607 | cannot handle that. */ | |
380bca97 | 24608 | |
3690dd37 | 24609 | static int |
6e5a29e1 | 24610 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24611 | { |
24612 | switch (attr->form) | |
24613 | { | |
24614 | case DW_FORM_sdata: | |
24615 | case DW_FORM_udata: | |
24616 | case DW_FORM_data1: | |
24617 | case DW_FORM_data2: | |
24618 | case DW_FORM_data4: | |
24619 | case DW_FORM_data8: | |
663c44ac | 24620 | case DW_FORM_implicit_const: |
3690dd37 JB |
24621 | return 1; |
24622 | default: | |
24623 | return 0; | |
24624 | } | |
24625 | } | |
24626 | ||
7771576e SA |
24627 | |
24628 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24629 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24630 | ||
24631 | static int | |
6e5a29e1 | 24632 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24633 | { |
24634 | switch (attr->form) | |
24635 | { | |
24636 | case DW_FORM_ref_addr: | |
24637 | case DW_FORM_ref1: | |
24638 | case DW_FORM_ref2: | |
24639 | case DW_FORM_ref4: | |
24640 | case DW_FORM_ref8: | |
24641 | case DW_FORM_ref_udata: | |
24642 | case DW_FORM_GNU_ref_alt: | |
24643 | return 1; | |
24644 | default: | |
24645 | return 0; | |
24646 | } | |
24647 | } | |
24648 | ||
3019eac3 DE |
24649 | /* Return the .debug_loc section to use for CU. |
24650 | For DWO files use .debug_loc.dwo. */ | |
24651 | ||
24652 | static struct dwarf2_section_info * | |
24653 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24654 | { | |
24655 | if (cu->dwo_unit) | |
43988095 JK |
24656 | { |
24657 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24658 | ||
24659 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24660 | } | |
24661 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24662 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24663 | } |
24664 | ||
8cf6f0b1 TT |
24665 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24666 | ||
24667 | static void | |
24668 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24669 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24670 | const struct attribute *attr) |
8cf6f0b1 | 24671 | { |
3019eac3 DE |
24672 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24673 | ||
24674 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24675 | |
24676 | baton->per_cu = cu->per_cu; | |
24677 | gdb_assert (baton->per_cu); | |
24678 | /* We don't know how long the location list is, but make sure we | |
24679 | don't run off the edge of the section. */ | |
3019eac3 DE |
24680 | baton->size = section->size - DW_UNSND (attr); |
24681 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24682 | baton->base_address = cu->base_address; |
f664829e | 24683 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24684 | } |
24685 | ||
4c2df51b | 24686 | static void |
ff39bb5e | 24687 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24688 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24689 | { |
bb5ed363 | 24690 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24691 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24692 | |
3690dd37 | 24693 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24694 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24695 | the section. If so, fall through to the complaint in the |
24696 | other branch. */ | |
3019eac3 | 24697 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24698 | { |
0d53c4c4 | 24699 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24700 | |
8d749320 | 24701 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24702 | |
8cf6f0b1 | 24703 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24704 | |
d00adf39 | 24705 | if (cu->base_known == 0) |
0d53c4c4 | 24706 | complaint (&symfile_complaints, |
3e43a32a MS |
24707 | _("Location list used without " |
24708 | "specifying the CU base address.")); | |
4c2df51b | 24709 | |
f1e6e072 TT |
24710 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24711 | ? dwarf2_loclist_block_index | |
24712 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24713 | SYMBOL_LOCATION_BATON (sym) = baton; |
24714 | } | |
24715 | else | |
24716 | { | |
24717 | struct dwarf2_locexpr_baton *baton; | |
24718 | ||
8d749320 | 24719 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24720 | baton->per_cu = cu->per_cu; |
24721 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24722 | |
24723 | if (attr_form_is_block (attr)) | |
24724 | { | |
24725 | /* Note that we're just copying the block's data pointer | |
24726 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24727 | info_buffer for SYM's objfile; right now we never release |
24728 | that buffer, but when we do clean up properly this may | |
24729 | need to change. */ | |
0d53c4c4 DJ |
24730 | baton->size = DW_BLOCK (attr)->size; |
24731 | baton->data = DW_BLOCK (attr)->data; | |
24732 | } | |
24733 | else | |
24734 | { | |
24735 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24736 | SYMBOL_NATURAL_NAME (sym)); | |
24737 | baton->size = 0; | |
0d53c4c4 | 24738 | } |
6e70227d | 24739 | |
f1e6e072 TT |
24740 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24741 | ? dwarf2_locexpr_block_index | |
24742 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24743 | SYMBOL_LOCATION_BATON (sym) = baton; |
24744 | } | |
4c2df51b | 24745 | } |
6502dd73 | 24746 | |
9aa1f1e3 TT |
24747 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24748 | came from a separate debuginfo file, then the master objfile is | |
24749 | returned. */ | |
ae0d2f24 UW |
24750 | |
24751 | struct objfile * | |
24752 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24753 | { | |
9291a0cd | 24754 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
24755 | |
24756 | /* Return the master objfile, so that we can report and look up the | |
24757 | correct file containing this variable. */ | |
24758 | if (objfile->separate_debug_objfile_backlink) | |
24759 | objfile = objfile->separate_debug_objfile_backlink; | |
24760 | ||
24761 | return objfile; | |
24762 | } | |
24763 | ||
96408a79 SA |
24764 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24765 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24766 | CU_HEADERP first. */ | |
24767 | ||
24768 | static const struct comp_unit_head * | |
24769 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24770 | struct dwarf2_per_cu_data *per_cu) | |
24771 | { | |
d521ce57 | 24772 | const gdb_byte *info_ptr; |
96408a79 SA |
24773 | |
24774 | if (per_cu->cu) | |
24775 | return &per_cu->cu->header; | |
24776 | ||
9c541725 | 24777 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24778 | |
24779 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24780 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24781 | rcuh_kind::COMPILE); | |
96408a79 SA |
24782 | |
24783 | return cu_headerp; | |
24784 | } | |
24785 | ||
ae0d2f24 UW |
24786 | /* Return the address size given in the compilation unit header for CU. */ |
24787 | ||
98714339 | 24788 | int |
ae0d2f24 UW |
24789 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
24790 | { | |
96408a79 SA |
24791 | struct comp_unit_head cu_header_local; |
24792 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24793 | |
96408a79 SA |
24794 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24795 | ||
24796 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24797 | } |
24798 | ||
9eae7c52 TT |
24799 | /* Return the offset size given in the compilation unit header for CU. */ |
24800 | ||
24801 | int | |
24802 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
24803 | { | |
96408a79 SA |
24804 | struct comp_unit_head cu_header_local; |
24805 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24806 | |
96408a79 SA |
24807 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24808 | ||
24809 | return cu_headerp->offset_size; | |
24810 | } | |
24811 | ||
24812 | /* See its dwarf2loc.h declaration. */ | |
24813 | ||
24814 | int | |
24815 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
24816 | { | |
24817 | struct comp_unit_head cu_header_local; | |
24818 | const struct comp_unit_head *cu_headerp; | |
24819 | ||
24820 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
24821 | ||
24822 | if (cu_headerp->version == 2) | |
24823 | return cu_headerp->addr_size; | |
24824 | else | |
24825 | return cu_headerp->offset_size; | |
181cebd4 JK |
24826 | } |
24827 | ||
9aa1f1e3 TT |
24828 | /* Return the text offset of the CU. The returned offset comes from |
24829 | this CU's objfile. If this objfile came from a separate debuginfo | |
24830 | file, then the offset may be different from the corresponding | |
24831 | offset in the parent objfile. */ | |
24832 | ||
24833 | CORE_ADDR | |
24834 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
24835 | { | |
bb3fa9d0 | 24836 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
24837 | |
24838 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
24839 | } | |
24840 | ||
43988095 JK |
24841 | /* Return DWARF version number of PER_CU. */ |
24842 | ||
24843 | short | |
24844 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
24845 | { | |
24846 | return per_cu->dwarf_version; | |
24847 | } | |
24848 | ||
348e048f DE |
24849 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
24850 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
24851 | |
24852 | static struct dwarf2_per_cu_data * | |
9c541725 | 24853 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 24854 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
24855 | struct objfile *objfile) |
24856 | { | |
24857 | struct dwarf2_per_cu_data *this_cu; | |
24858 | int low, high; | |
36586728 | 24859 | const sect_offset *cu_off; |
ae038cb0 | 24860 | |
ae038cb0 DJ |
24861 | low = 0; |
24862 | high = dwarf2_per_objfile->n_comp_units - 1; | |
24863 | while (high > low) | |
24864 | { | |
36586728 | 24865 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24866 | int mid = low + (high - low) / 2; |
9a619af0 | 24867 | |
36586728 | 24868 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 24869 | cu_off = &mid_cu->sect_off; |
36586728 | 24870 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 24871 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
24872 | high = mid; |
24873 | else | |
24874 | low = mid + 1; | |
24875 | } | |
24876 | gdb_assert (low == high); | |
36586728 | 24877 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
24878 | cu_off = &this_cu->sect_off; |
24879 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 24880 | { |
36586728 | 24881 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24882 | error (_("Dwarf Error: could not find partial DIE containing " |
9c541725 PA |
24883 | "offset 0x%x [in module %s]"), |
24884 | to_underlying (sect_off), bfd_get_filename (objfile->obfd)); | |
10b3939b | 24885 | |
9c541725 PA |
24886 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
24887 | <= sect_off); | |
ae038cb0 DJ |
24888 | return dwarf2_per_objfile->all_comp_units[low-1]; |
24889 | } | |
24890 | else | |
24891 | { | |
24892 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
24893 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9c541725 PA |
24894 | && sect_off >= this_cu->sect_off + this_cu->length) |
24895 | error (_("invalid dwarf2 offset %u"), to_underlying (sect_off)); | |
24896 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); | |
ae038cb0 DJ |
24897 | return this_cu; |
24898 | } | |
24899 | } | |
24900 | ||
23745b47 | 24901 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 24902 | |
9816fde3 | 24903 | static void |
23745b47 | 24904 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 24905 | { |
9816fde3 | 24906 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
24907 | per_cu->cu = cu; |
24908 | cu->per_cu = per_cu; | |
24909 | cu->objfile = per_cu->objfile; | |
93311388 | 24910 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
24911 | } |
24912 | ||
24913 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24914 | ||
24915 | static void | |
95554aad TT |
24916 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24917 | enum language pretend_language) | |
9816fde3 JK |
24918 | { |
24919 | struct attribute *attr; | |
24920 | ||
24921 | /* Set the language we're debugging. */ | |
24922 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
24923 | if (attr) | |
24924 | set_cu_language (DW_UNSND (attr), cu); | |
24925 | else | |
9cded63f | 24926 | { |
95554aad | 24927 | cu->language = pretend_language; |
9cded63f TT |
24928 | cu->language_defn = language_def (cu->language); |
24929 | } | |
dee91e82 | 24930 | |
7d45c7c3 | 24931 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24932 | } |
24933 | ||
ae038cb0 DJ |
24934 | /* Release one cached compilation unit, CU. We unlink it from the tree |
24935 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
24936 | the caller is responsible for that. |
24937 | NOTE: DATA is a void * because this function is also used as a | |
24938 | cleanup routine. */ | |
ae038cb0 DJ |
24939 | |
24940 | static void | |
68dc6402 | 24941 | free_heap_comp_unit (void *data) |
ae038cb0 | 24942 | { |
9a3c8263 | 24943 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
ae038cb0 | 24944 | |
23745b47 DE |
24945 | gdb_assert (cu->per_cu != NULL); |
24946 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
24947 | cu->per_cu = NULL; |
24948 | ||
24949 | obstack_free (&cu->comp_unit_obstack, NULL); | |
24950 | ||
24951 | xfree (cu); | |
24952 | } | |
24953 | ||
72bf9492 | 24954 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 24955 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 24956 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
24957 | |
24958 | static void | |
24959 | free_stack_comp_unit (void *data) | |
24960 | { | |
9a3c8263 | 24961 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
72bf9492 | 24962 | |
23745b47 DE |
24963 | gdb_assert (cu->per_cu != NULL); |
24964 | cu->per_cu->cu = NULL; | |
24965 | cu->per_cu = NULL; | |
24966 | ||
72bf9492 DJ |
24967 | obstack_free (&cu->comp_unit_obstack, NULL); |
24968 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
24969 | } |
24970 | ||
24971 | /* Free all cached compilation units. */ | |
24972 | ||
24973 | static void | |
24974 | free_cached_comp_units (void *data) | |
24975 | { | |
330cdd98 | 24976 | dwarf2_per_objfile->free_cached_comp_units (); |
ae038cb0 DJ |
24977 | } |
24978 | ||
24979 | /* Increase the age counter on each cached compilation unit, and free | |
24980 | any that are too old. */ | |
24981 | ||
24982 | static void | |
24983 | age_cached_comp_units (void) | |
24984 | { | |
24985 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
24986 | ||
24987 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
24988 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24989 | while (per_cu != NULL) | |
24990 | { | |
24991 | per_cu->cu->last_used ++; | |
b4f54984 | 24992 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
24993 | dwarf2_mark (per_cu->cu); |
24994 | per_cu = per_cu->cu->read_in_chain; | |
24995 | } | |
24996 | ||
24997 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24998 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
24999 | while (per_cu != NULL) | |
25000 | { | |
25001 | struct dwarf2_per_cu_data *next_cu; | |
25002 | ||
25003 | next_cu = per_cu->cu->read_in_chain; | |
25004 | ||
25005 | if (!per_cu->cu->mark) | |
25006 | { | |
68dc6402 | 25007 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
25008 | *last_chain = next_cu; |
25009 | } | |
25010 | else | |
25011 | last_chain = &per_cu->cu->read_in_chain; | |
25012 | ||
25013 | per_cu = next_cu; | |
25014 | } | |
25015 | } | |
25016 | ||
25017 | /* Remove a single compilation unit from the cache. */ | |
25018 | ||
25019 | static void | |
dee91e82 | 25020 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25021 | { |
25022 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25023 | ||
25024 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25025 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25026 | while (per_cu != NULL) | |
25027 | { | |
25028 | struct dwarf2_per_cu_data *next_cu; | |
25029 | ||
25030 | next_cu = per_cu->cu->read_in_chain; | |
25031 | ||
dee91e82 | 25032 | if (per_cu == target_per_cu) |
ae038cb0 | 25033 | { |
68dc6402 | 25034 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 25035 | per_cu->cu = NULL; |
ae038cb0 DJ |
25036 | *last_chain = next_cu; |
25037 | break; | |
25038 | } | |
25039 | else | |
25040 | last_chain = &per_cu->cu->read_in_chain; | |
25041 | ||
25042 | per_cu = next_cu; | |
25043 | } | |
25044 | } | |
25045 | ||
fe3e1990 DJ |
25046 | /* Release all extra memory associated with OBJFILE. */ |
25047 | ||
25048 | void | |
25049 | dwarf2_free_objfile (struct objfile *objfile) | |
25050 | { | |
9a3c8263 SM |
25051 | dwarf2_per_objfile |
25052 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
25053 | dwarf2_objfile_data_key); | |
fe3e1990 DJ |
25054 | |
25055 | if (dwarf2_per_objfile == NULL) | |
25056 | return; | |
25057 | ||
330cdd98 | 25058 | dwarf2_per_objfile->~dwarf2_per_objfile (); |
fe3e1990 DJ |
25059 | } |
25060 | ||
dee91e82 DE |
25061 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25062 | We store these in a hash table separate from the DIEs, and preserve them | |
25063 | when the DIEs are flushed out of cache. | |
25064 | ||
25065 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25066 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25067 | or the type may come from a DWO file. Furthermore, while it's more logical |
25068 | to use per_cu->section+offset, with Fission the section with the data is in | |
25069 | the DWO file but we don't know that section at the point we need it. | |
25070 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25071 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25072 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25073 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25074 | |
dee91e82 | 25075 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25076 | { |
dee91e82 | 25077 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25078 | sect_offset sect_off; |
1c379e20 DJ |
25079 | struct type *type; |
25080 | }; | |
25081 | ||
dee91e82 | 25082 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25083 | |
25084 | static hashval_t | |
dee91e82 | 25085 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25086 | { |
9a3c8263 SM |
25087 | const struct dwarf2_per_cu_offset_and_type *ofs |
25088 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25089 | |
9c541725 | 25090 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25091 | } |
25092 | ||
dee91e82 | 25093 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25094 | |
25095 | static int | |
dee91e82 | 25096 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25097 | { |
9a3c8263 SM |
25098 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25099 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25100 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25101 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25102 | |
dee91e82 | 25103 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25104 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25105 | } |
25106 | ||
25107 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25108 | table if necessary. For convenience, return TYPE. |
25109 | ||
25110 | The DIEs reading must have careful ordering to: | |
25111 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25112 | reading current DIE. | |
25113 | * Not trying to dereference contents of still incompletely read in types | |
25114 | while reading in other DIEs. | |
25115 | * Enable referencing still incompletely read in types just by a pointer to | |
25116 | the type without accessing its fields. | |
25117 | ||
25118 | Therefore caller should follow these rules: | |
25119 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25120 | before building the type and calling set_die_type. | |
e71ec853 | 25121 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25122 | possible before fetching more types to complete the current type. |
25123 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25124 | |
f792889a | 25125 | static struct type * |
1c379e20 DJ |
25126 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25127 | { | |
dee91e82 | 25128 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 25129 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
25130 | struct attribute *attr; |
25131 | struct dynamic_prop prop; | |
1c379e20 | 25132 | |
b4ba55a1 JB |
25133 | /* For Ada types, make sure that the gnat-specific data is always |
25134 | initialized (if not already set). There are a few types where | |
25135 | we should not be doing so, because the type-specific area is | |
25136 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25137 | where the type-specific area is used to store the floatformat). | |
25138 | But this is not a problem, because the gnat-specific information | |
25139 | is actually not needed for these types. */ | |
25140 | if (need_gnat_info (cu) | |
25141 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25142 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25143 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25144 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25145 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25146 | && !HAVE_GNAT_AUX_INFO (type)) |
25147 | INIT_GNAT_SPECIFIC (type); | |
25148 | ||
3f2f83dd KB |
25149 | /* Read DW_AT_allocated and set in type. */ |
25150 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25151 | if (attr_form_is_block (attr)) | |
25152 | { | |
25153 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
25154 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type, objfile); | |
25155 | } | |
25156 | else if (attr != NULL) | |
25157 | { | |
25158 | complaint (&symfile_complaints, | |
9c541725 PA |
25159 | _("DW_AT_allocated has the wrong form (%s) at DIE 0x%x"), |
25160 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
25161 | to_underlying (die->sect_off)); | |
3f2f83dd KB |
25162 | } |
25163 | ||
25164 | /* Read DW_AT_associated and set in type. */ | |
25165 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25166 | if (attr_form_is_block (attr)) | |
25167 | { | |
25168 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
25169 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type, objfile); | |
25170 | } | |
25171 | else if (attr != NULL) | |
25172 | { | |
25173 | complaint (&symfile_complaints, | |
9c541725 PA |
25174 | _("DW_AT_associated has the wrong form (%s) at DIE 0x%x"), |
25175 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
25176 | to_underlying (die->sect_off)); | |
3f2f83dd KB |
25177 | } |
25178 | ||
3cdcd0ce JB |
25179 | /* Read DW_AT_data_location and set in type. */ |
25180 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25181 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 25182 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 25183 | |
dee91e82 | 25184 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25185 | { |
dee91e82 DE |
25186 | dwarf2_per_objfile->die_type_hash = |
25187 | htab_create_alloc_ex (127, | |
25188 | per_cu_offset_and_type_hash, | |
25189 | per_cu_offset_and_type_eq, | |
25190 | NULL, | |
25191 | &objfile->objfile_obstack, | |
25192 | hashtab_obstack_allocate, | |
25193 | dummy_obstack_deallocate); | |
f792889a | 25194 | } |
1c379e20 | 25195 | |
dee91e82 | 25196 | ofs.per_cu = cu->per_cu; |
9c541725 | 25197 | ofs.sect_off = die->sect_off; |
1c379e20 | 25198 | ofs.type = type; |
dee91e82 DE |
25199 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25200 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
25201 | if (*slot) |
25202 | complaint (&symfile_complaints, | |
25203 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
9c541725 | 25204 | to_underlying (die->sect_off)); |
8d749320 SM |
25205 | *slot = XOBNEW (&objfile->objfile_obstack, |
25206 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25207 | **slot = ofs; |
f792889a | 25208 | return type; |
1c379e20 DJ |
25209 | } |
25210 | ||
9c541725 | 25211 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25212 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25213 | |
25214 | static struct type * | |
9c541725 | 25215 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25216 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25217 | { |
dee91e82 | 25218 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25219 | |
dee91e82 | 25220 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25221 | return NULL; |
1c379e20 | 25222 | |
dee91e82 | 25223 | ofs.per_cu = per_cu; |
9c541725 | 25224 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25225 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25226 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25227 | if (slot) |
25228 | return slot->type; | |
25229 | else | |
25230 | return NULL; | |
25231 | } | |
25232 | ||
02142a6c | 25233 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25234 | or return NULL if DIE does not have a saved type. */ |
25235 | ||
25236 | static struct type * | |
25237 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25238 | { | |
9c541725 | 25239 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25240 | } |
25241 | ||
10b3939b DJ |
25242 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25243 | ||
25244 | static void | |
25245 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25246 | struct dwarf2_per_cu_data *ref_per_cu) | |
25247 | { | |
25248 | void **slot; | |
25249 | ||
25250 | if (cu->dependencies == NULL) | |
25251 | cu->dependencies | |
25252 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25253 | NULL, &cu->comp_unit_obstack, | |
25254 | hashtab_obstack_allocate, | |
25255 | dummy_obstack_deallocate); | |
25256 | ||
25257 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25258 | if (*slot == NULL) | |
25259 | *slot = ref_per_cu; | |
25260 | } | |
1c379e20 | 25261 | |
f504f079 DE |
25262 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25263 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25264 | cache that we must keep because we are keeping CU. */ |
25265 | ||
10b3939b DJ |
25266 | static int |
25267 | dwarf2_mark_helper (void **slot, void *data) | |
25268 | { | |
25269 | struct dwarf2_per_cu_data *per_cu; | |
25270 | ||
25271 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25272 | |
25273 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25274 | reading of the chain. As such dependencies remain valid it is not much | |
25275 | useful to track and undo them during QUIT cleanups. */ | |
25276 | if (per_cu->cu == NULL) | |
25277 | return 1; | |
25278 | ||
10b3939b DJ |
25279 | if (per_cu->cu->mark) |
25280 | return 1; | |
25281 | per_cu->cu->mark = 1; | |
25282 | ||
25283 | if (per_cu->cu->dependencies != NULL) | |
25284 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25285 | ||
25286 | return 1; | |
25287 | } | |
25288 | ||
f504f079 DE |
25289 | /* Set the mark field in CU and in every other compilation unit in the |
25290 | cache that we must keep because we are keeping CU. */ | |
25291 | ||
ae038cb0 DJ |
25292 | static void |
25293 | dwarf2_mark (struct dwarf2_cu *cu) | |
25294 | { | |
25295 | if (cu->mark) | |
25296 | return; | |
25297 | cu->mark = 1; | |
10b3939b DJ |
25298 | if (cu->dependencies != NULL) |
25299 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25300 | } |
25301 | ||
25302 | static void | |
25303 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25304 | { | |
25305 | while (per_cu) | |
25306 | { | |
25307 | per_cu->cu->mark = 0; | |
25308 | per_cu = per_cu->cu->read_in_chain; | |
25309 | } | |
72bf9492 DJ |
25310 | } |
25311 | ||
72bf9492 DJ |
25312 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25313 | is its offset in .debug_info for this objfile. */ | |
25314 | ||
25315 | static hashval_t | |
25316 | partial_die_hash (const void *item) | |
25317 | { | |
9a3c8263 SM |
25318 | const struct partial_die_info *part_die |
25319 | = (const struct partial_die_info *) item; | |
9a619af0 | 25320 | |
9c541725 | 25321 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25322 | } |
25323 | ||
25324 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25325 | are equal if they have the same offset. */ | |
25326 | ||
25327 | static int | |
25328 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25329 | { | |
9a3c8263 SM |
25330 | const struct partial_die_info *part_die_lhs |
25331 | = (const struct partial_die_info *) item_lhs; | |
25332 | const struct partial_die_info *part_die_rhs | |
25333 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25334 | |
9c541725 | 25335 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25336 | } |
25337 | ||
b4f54984 DE |
25338 | static struct cmd_list_element *set_dwarf_cmdlist; |
25339 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25340 | |
25341 | static void | |
981a3fb3 | 25342 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25343 | { |
b4f54984 | 25344 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25345 | gdb_stdout); |
ae038cb0 DJ |
25346 | } |
25347 | ||
25348 | static void | |
981a3fb3 | 25349 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25350 | { |
b4f54984 | 25351 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25352 | } |
25353 | ||
4bf44c1c | 25354 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
25355 | |
25356 | static void | |
c1bd65d0 | 25357 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc | 25358 | { |
9a3c8263 | 25359 | struct dwarf2_per_objfile *data = (struct dwarf2_per_objfile *) d; |
8b70b953 | 25360 | int ix; |
8b70b953 | 25361 | |
626f2d1c TT |
25362 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
25363 | cleaning up. */ | |
25364 | dwarf2_per_objfile = NULL; | |
25365 | ||
59b0c7c1 JB |
25366 | for (ix = 0; ix < data->n_comp_units; ++ix) |
25367 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 25368 | |
59b0c7c1 | 25369 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 25370 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
25371 | data->all_type_units[ix]->per_cu.imported_symtabs); |
25372 | xfree (data->all_type_units); | |
95554aad | 25373 | |
8b70b953 | 25374 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
25375 | |
25376 | if (data->dwo_files) | |
25377 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
25378 | if (data->dwp_file) |
25379 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
25380 | |
25381 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
25382 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
3f563c84 PA |
25383 | |
25384 | if (data->index_table != NULL) | |
25385 | data->index_table->~mapped_index (); | |
9291a0cd TT |
25386 | } |
25387 | ||
25388 | \f | |
ae2de4f8 | 25389 | /* The "save gdb-index" command. */ |
9291a0cd | 25390 | |
437afbb8 JK |
25391 | /* Write SIZE bytes from the buffer pointed to by DATA to FILE, with |
25392 | error checking. */ | |
25393 | ||
25394 | static void | |
25395 | file_write (FILE *file, const void *data, size_t size) | |
25396 | { | |
25397 | if (fwrite (data, 1, size, file) != size) | |
25398 | error (_("couldn't data write to file")); | |
25399 | } | |
25400 | ||
25401 | /* Write the contents of VEC to FILE, with error checking. */ | |
25402 | ||
25403 | template<typename Elem, typename Alloc> | |
25404 | static void | |
25405 | file_write (FILE *file, const std::vector<Elem, Alloc> &vec) | |
25406 | { | |
25407 | file_write (file, vec.data (), vec.size () * sizeof (vec[0])); | |
25408 | } | |
25409 | ||
bc8f2430 JK |
25410 | /* In-memory buffer to prepare data to be written later to a file. */ |
25411 | class data_buf | |
9291a0cd | 25412 | { |
bc8f2430 | 25413 | public: |
bc8f2430 JK |
25414 | /* Copy DATA to the end of the buffer. */ |
25415 | template<typename T> | |
25416 | void append_data (const T &data) | |
25417 | { | |
25418 | std::copy (reinterpret_cast<const gdb_byte *> (&data), | |
25419 | reinterpret_cast<const gdb_byte *> (&data + 1), | |
c2f134ac | 25420 | grow (sizeof (data))); |
bc8f2430 | 25421 | } |
b89be57b | 25422 | |
c2f134ac PA |
25423 | /* Copy CSTR (a zero-terminated string) to the end of buffer. The |
25424 | terminating zero is appended too. */ | |
bc8f2430 JK |
25425 | void append_cstr0 (const char *cstr) |
25426 | { | |
25427 | const size_t size = strlen (cstr) + 1; | |
c2f134ac PA |
25428 | std::copy (cstr, cstr + size, grow (size)); |
25429 | } | |
25430 | ||
437afbb8 JK |
25431 | /* Store INPUT as ULEB128 to the end of buffer. */ |
25432 | void append_unsigned_leb128 (ULONGEST input) | |
25433 | { | |
25434 | for (;;) | |
25435 | { | |
25436 | gdb_byte output = input & 0x7f; | |
25437 | input >>= 7; | |
25438 | if (input) | |
25439 | output |= 0x80; | |
25440 | append_data (output); | |
25441 | if (input == 0) | |
25442 | break; | |
25443 | } | |
25444 | } | |
25445 | ||
c2f134ac PA |
25446 | /* Accept a host-format integer in VAL and append it to the buffer |
25447 | as a target-format integer which is LEN bytes long. */ | |
25448 | void append_uint (size_t len, bfd_endian byte_order, ULONGEST val) | |
25449 | { | |
25450 | ::store_unsigned_integer (grow (len), len, byte_order, val); | |
bc8f2430 | 25451 | } |
9291a0cd | 25452 | |
bc8f2430 JK |
25453 | /* Return the size of the buffer. */ |
25454 | size_t size () const | |
25455 | { | |
25456 | return m_vec.size (); | |
25457 | } | |
25458 | ||
437afbb8 JK |
25459 | /* Return true iff the buffer is empty. */ |
25460 | bool empty () const | |
25461 | { | |
25462 | return m_vec.empty (); | |
25463 | } | |
25464 | ||
bc8f2430 JK |
25465 | /* Write the buffer to FILE. */ |
25466 | void file_write (FILE *file) const | |
25467 | { | |
437afbb8 | 25468 | ::file_write (file, m_vec); |
bc8f2430 JK |
25469 | } |
25470 | ||
25471 | private: | |
c2f134ac PA |
25472 | /* Grow SIZE bytes at the end of the buffer. Returns a pointer to |
25473 | the start of the new block. */ | |
25474 | gdb_byte *grow (size_t size) | |
25475 | { | |
25476 | m_vec.resize (m_vec.size () + size); | |
25477 | return &*m_vec.end () - size; | |
25478 | } | |
25479 | ||
d5722aa2 | 25480 | gdb::byte_vector m_vec; |
bc8f2430 | 25481 | }; |
9291a0cd TT |
25482 | |
25483 | /* An entry in the symbol table. */ | |
25484 | struct symtab_index_entry | |
25485 | { | |
25486 | /* The name of the symbol. */ | |
25487 | const char *name; | |
25488 | /* The offset of the name in the constant pool. */ | |
25489 | offset_type index_offset; | |
25490 | /* A sorted vector of the indices of all the CUs that hold an object | |
25491 | of this name. */ | |
bc8f2430 | 25492 | std::vector<offset_type> cu_indices; |
9291a0cd TT |
25493 | }; |
25494 | ||
25495 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
25496 | struct mapped_symtab | |
25497 | { | |
bc8f2430 JK |
25498 | mapped_symtab () |
25499 | { | |
25500 | data.resize (1024); | |
25501 | } | |
b89be57b | 25502 | |
bc8f2430 | 25503 | offset_type n_elements = 0; |
4b76cda9 | 25504 | std::vector<symtab_index_entry> data; |
bc8f2430 | 25505 | }; |
9291a0cd | 25506 | |
bc8f2430 | 25507 | /* Find a slot in SYMTAB for the symbol NAME. Returns a reference to |
559a7a62 JK |
25508 | the slot. |
25509 | ||
25510 | Function is used only during write_hash_table so no index format backward | |
25511 | compatibility is needed. */ | |
b89be57b | 25512 | |
4b76cda9 | 25513 | static symtab_index_entry & |
9291a0cd TT |
25514 | find_slot (struct mapped_symtab *symtab, const char *name) |
25515 | { | |
559a7a62 | 25516 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd | 25517 | |
bc8f2430 JK |
25518 | index = hash & (symtab->data.size () - 1); |
25519 | step = ((hash * 17) & (symtab->data.size () - 1)) | 1; | |
9291a0cd TT |
25520 | |
25521 | for (;;) | |
25522 | { | |
4b76cda9 PA |
25523 | if (symtab->data[index].name == NULL |
25524 | || strcmp (name, symtab->data[index].name) == 0) | |
bc8f2430 JK |
25525 | return symtab->data[index]; |
25526 | index = (index + step) & (symtab->data.size () - 1); | |
9291a0cd TT |
25527 | } |
25528 | } | |
25529 | ||
25530 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 25531 | |
9291a0cd TT |
25532 | static void |
25533 | hash_expand (struct mapped_symtab *symtab) | |
25534 | { | |
bc8f2430 | 25535 | auto old_entries = std::move (symtab->data); |
9291a0cd | 25536 | |
bc8f2430 JK |
25537 | symtab->data.clear (); |
25538 | symtab->data.resize (old_entries.size () * 2); | |
9291a0cd | 25539 | |
bc8f2430 | 25540 | for (auto &it : old_entries) |
4b76cda9 | 25541 | if (it.name != NULL) |
bc8f2430 | 25542 | { |
4b76cda9 | 25543 | auto &ref = find_slot (symtab, it.name); |
bc8f2430 JK |
25544 | ref = std::move (it); |
25545 | } | |
9291a0cd TT |
25546 | } |
25547 | ||
156942c7 DE |
25548 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
25549 | CU_INDEX is the index of the CU in which the symbol appears. | |
25550 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 25551 | |
9291a0cd TT |
25552 | static void |
25553 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 25554 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
25555 | offset_type cu_index) |
25556 | { | |
156942c7 | 25557 | offset_type cu_index_and_attrs; |
9291a0cd TT |
25558 | |
25559 | ++symtab->n_elements; | |
bc8f2430 | 25560 | if (4 * symtab->n_elements / 3 >= symtab->data.size ()) |
9291a0cd TT |
25561 | hash_expand (symtab); |
25562 | ||
4b76cda9 PA |
25563 | symtab_index_entry &slot = find_slot (symtab, name); |
25564 | if (slot.name == NULL) | |
9291a0cd | 25565 | { |
4b76cda9 | 25566 | slot.name = name; |
156942c7 | 25567 | /* index_offset is set later. */ |
9291a0cd | 25568 | } |
156942c7 DE |
25569 | |
25570 | cu_index_and_attrs = 0; | |
25571 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
25572 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
25573 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
25574 | ||
25575 | /* We don't want to record an index value twice as we want to avoid the | |
25576 | duplication. | |
25577 | We process all global symbols and then all static symbols | |
25578 | (which would allow us to avoid the duplication by only having to check | |
25579 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
25580 | To keep things simple we don't worry about the duplication here and | |
25581 | sort and uniqufy the list after we've processed all symbols. */ | |
4b76cda9 | 25582 | slot.cu_indices.push_back (cu_index_and_attrs); |
156942c7 DE |
25583 | } |
25584 | ||
25585 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
25586 | ||
25587 | static void | |
25588 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
25589 | { | |
4b76cda9 | 25590 | for (auto &entry : symtab->data) |
156942c7 | 25591 | { |
4b76cda9 | 25592 | if (entry.name != NULL && !entry.cu_indices.empty ()) |
156942c7 | 25593 | { |
4b76cda9 | 25594 | auto &cu_indices = entry.cu_indices; |
6fd931f2 PA |
25595 | std::sort (cu_indices.begin (), cu_indices.end ()); |
25596 | auto from = std::unique (cu_indices.begin (), cu_indices.end ()); | |
25597 | cu_indices.erase (from, cu_indices.end ()); | |
156942c7 DE |
25598 | } |
25599 | } | |
9291a0cd TT |
25600 | } |
25601 | ||
bc8f2430 JK |
25602 | /* A form of 'const char *' suitable for container keys. Only the |
25603 | pointer is stored. The strings themselves are compared, not the | |
25604 | pointers. */ | |
25605 | class c_str_view | |
9291a0cd | 25606 | { |
bc8f2430 JK |
25607 | public: |
25608 | c_str_view (const char *cstr) | |
25609 | : m_cstr (cstr) | |
25610 | {} | |
9291a0cd | 25611 | |
bc8f2430 JK |
25612 | bool operator== (const c_str_view &other) const |
25613 | { | |
25614 | return strcmp (m_cstr, other.m_cstr) == 0; | |
25615 | } | |
9291a0cd | 25616 | |
437afbb8 JK |
25617 | /* Return the underlying C string. Note, the returned string is |
25618 | only a reference with lifetime of this object. */ | |
25619 | const char *c_str () const | |
25620 | { | |
25621 | return m_cstr; | |
25622 | } | |
25623 | ||
bc8f2430 JK |
25624 | private: |
25625 | friend class c_str_view_hasher; | |
25626 | const char *const m_cstr; | |
25627 | }; | |
9291a0cd | 25628 | |
bc8f2430 JK |
25629 | /* A std::unordered_map::hasher for c_str_view that uses the right |
25630 | hash function for strings in a mapped index. */ | |
25631 | class c_str_view_hasher | |
25632 | { | |
25633 | public: | |
25634 | size_t operator () (const c_str_view &x) const | |
25635 | { | |
25636 | return mapped_index_string_hash (INT_MAX, x.m_cstr); | |
25637 | } | |
25638 | }; | |
b89be57b | 25639 | |
bc8f2430 JK |
25640 | /* A std::unordered_map::hasher for std::vector<>. */ |
25641 | template<typename T> | |
25642 | class vector_hasher | |
9291a0cd | 25643 | { |
bc8f2430 JK |
25644 | public: |
25645 | size_t operator () (const std::vector<T> &key) const | |
25646 | { | |
25647 | return iterative_hash (key.data (), | |
25648 | sizeof (key.front ()) * key.size (), 0); | |
25649 | } | |
25650 | }; | |
9291a0cd | 25651 | |
bc8f2430 JK |
25652 | /* Write the mapped hash table SYMTAB to the data buffer OUTPUT, with |
25653 | constant pool entries going into the data buffer CPOOL. */ | |
3876f04e | 25654 | |
bc8f2430 JK |
25655 | static void |
25656 | write_hash_table (mapped_symtab *symtab, data_buf &output, data_buf &cpool) | |
25657 | { | |
25658 | { | |
25659 | /* Elements are sorted vectors of the indices of all the CUs that | |
25660 | hold an object of this name. */ | |
25661 | std::unordered_map<std::vector<offset_type>, offset_type, | |
25662 | vector_hasher<offset_type>> | |
25663 | symbol_hash_table; | |
25664 | ||
25665 | /* We add all the index vectors to the constant pool first, to | |
25666 | ensure alignment is ok. */ | |
4b76cda9 | 25667 | for (symtab_index_entry &entry : symtab->data) |
bc8f2430 | 25668 | { |
4b76cda9 | 25669 | if (entry.name == NULL) |
bc8f2430 | 25670 | continue; |
4b76cda9 | 25671 | gdb_assert (entry.index_offset == 0); |
70a1152b PA |
25672 | |
25673 | /* Finding before inserting is faster than always trying to | |
25674 | insert, because inserting always allocates a node, does the | |
25675 | lookup, and then destroys the new node if another node | |
25676 | already had the same key. C++17 try_emplace will avoid | |
25677 | this. */ | |
25678 | const auto found | |
4b76cda9 | 25679 | = symbol_hash_table.find (entry.cu_indices); |
70a1152b PA |
25680 | if (found != symbol_hash_table.end ()) |
25681 | { | |
4b76cda9 | 25682 | entry.index_offset = found->second; |
70a1152b PA |
25683 | continue; |
25684 | } | |
25685 | ||
4b76cda9 PA |
25686 | symbol_hash_table.emplace (entry.cu_indices, cpool.size ()); |
25687 | entry.index_offset = cpool.size (); | |
25688 | cpool.append_data (MAYBE_SWAP (entry.cu_indices.size ())); | |
25689 | for (const auto index : entry.cu_indices) | |
25690 | cpool.append_data (MAYBE_SWAP (index)); | |
bc8f2430 JK |
25691 | } |
25692 | } | |
9291a0cd TT |
25693 | |
25694 | /* Now write out the hash table. */ | |
bc8f2430 | 25695 | std::unordered_map<c_str_view, offset_type, c_str_view_hasher> str_table; |
4b76cda9 | 25696 | for (const auto &entry : symtab->data) |
9291a0cd TT |
25697 | { |
25698 | offset_type str_off, vec_off; | |
25699 | ||
4b76cda9 | 25700 | if (entry.name != NULL) |
9291a0cd | 25701 | { |
4b76cda9 | 25702 | const auto insertpair = str_table.emplace (entry.name, cpool.size ()); |
bc8f2430 | 25703 | if (insertpair.second) |
4b76cda9 | 25704 | cpool.append_cstr0 (entry.name); |
bc8f2430 | 25705 | str_off = insertpair.first->second; |
4b76cda9 | 25706 | vec_off = entry.index_offset; |
9291a0cd TT |
25707 | } |
25708 | else | |
25709 | { | |
25710 | /* While 0 is a valid constant pool index, it is not valid | |
25711 | to have 0 for both offsets. */ | |
25712 | str_off = 0; | |
25713 | vec_off = 0; | |
25714 | } | |
25715 | ||
bc8f2430 JK |
25716 | output.append_data (MAYBE_SWAP (str_off)); |
25717 | output.append_data (MAYBE_SWAP (vec_off)); | |
9291a0cd | 25718 | } |
9291a0cd TT |
25719 | } |
25720 | ||
bc8f2430 | 25721 | typedef std::unordered_map<partial_symtab *, unsigned int> psym_index_map; |
0a5429f6 DE |
25722 | |
25723 | /* Helper struct for building the address table. */ | |
25724 | struct addrmap_index_data | |
25725 | { | |
bc8f2430 JK |
25726 | addrmap_index_data (data_buf &addr_vec_, psym_index_map &cu_index_htab_) |
25727 | : addr_vec (addr_vec_), cu_index_htab (cu_index_htab_) | |
25728 | {} | |
25729 | ||
0a5429f6 | 25730 | struct objfile *objfile; |
bc8f2430 JK |
25731 | data_buf &addr_vec; |
25732 | psym_index_map &cu_index_htab; | |
0a5429f6 DE |
25733 | |
25734 | /* Non-zero if the previous_* fields are valid. | |
25735 | We can't write an entry until we see the next entry (since it is only then | |
25736 | that we know the end of the entry). */ | |
25737 | int previous_valid; | |
25738 | /* Index of the CU in the table of all CUs in the index file. */ | |
25739 | unsigned int previous_cu_index; | |
0963b4bd | 25740 | /* Start address of the CU. */ |
0a5429f6 DE |
25741 | CORE_ADDR previous_cu_start; |
25742 | }; | |
25743 | ||
bc8f2430 | 25744 | /* Write an address entry to ADDR_VEC. */ |
b89be57b | 25745 | |
9291a0cd | 25746 | static void |
bc8f2430 | 25747 | add_address_entry (struct objfile *objfile, data_buf &addr_vec, |
0a5429f6 | 25748 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) |
9291a0cd | 25749 | { |
9291a0cd TT |
25750 | CORE_ADDR baseaddr; |
25751 | ||
25752 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25753 | ||
c2f134ac PA |
25754 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, start - baseaddr); |
25755 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
bc8f2430 | 25756 | addr_vec.append_data (MAYBE_SWAP (cu_index)); |
0a5429f6 DE |
25757 | } |
25758 | ||
25759 | /* Worker function for traversing an addrmap to build the address table. */ | |
25760 | ||
25761 | static int | |
25762 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
25763 | { | |
9a3c8263 SM |
25764 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
25765 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
25766 | |
25767 | if (data->previous_valid) | |
bc8f2430 | 25768 | add_address_entry (data->objfile, data->addr_vec, |
0a5429f6 DE |
25769 | data->previous_cu_start, start_addr, |
25770 | data->previous_cu_index); | |
25771 | ||
25772 | data->previous_cu_start = start_addr; | |
25773 | if (pst != NULL) | |
25774 | { | |
bc8f2430 JK |
25775 | const auto it = data->cu_index_htab.find (pst); |
25776 | gdb_assert (it != data->cu_index_htab.cend ()); | |
25777 | data->previous_cu_index = it->second; | |
0a5429f6 DE |
25778 | data->previous_valid = 1; |
25779 | } | |
25780 | else | |
bc8f2430 | 25781 | data->previous_valid = 0; |
0a5429f6 DE |
25782 | |
25783 | return 0; | |
25784 | } | |
25785 | ||
bc8f2430 | 25786 | /* Write OBJFILE's address map to ADDR_VEC. |
0a5429f6 DE |
25787 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices |
25788 | in the index file. */ | |
25789 | ||
25790 | static void | |
bc8f2430 JK |
25791 | write_address_map (struct objfile *objfile, data_buf &addr_vec, |
25792 | psym_index_map &cu_index_htab) | |
0a5429f6 | 25793 | { |
bc8f2430 | 25794 | struct addrmap_index_data addrmap_index_data (addr_vec, cu_index_htab); |
0a5429f6 DE |
25795 | |
25796 | /* When writing the address table, we have to cope with the fact that | |
25797 | the addrmap iterator only provides the start of a region; we have to | |
25798 | wait until the next invocation to get the start of the next region. */ | |
25799 | ||
25800 | addrmap_index_data.objfile = objfile; | |
0a5429f6 DE |
25801 | addrmap_index_data.previous_valid = 0; |
25802 | ||
25803 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
25804 | &addrmap_index_data); | |
25805 | ||
25806 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
25807 | is valid, but we should still handle it. | |
25808 | The end address is recorded as the start of the next region, but that | |
25809 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
25810 | anyway. */ | |
25811 | if (addrmap_index_data.previous_valid) | |
bc8f2430 | 25812 | add_address_entry (objfile, addr_vec, |
0a5429f6 DE |
25813 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, |
25814 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
25815 | } |
25816 | ||
156942c7 DE |
25817 | /* Return the symbol kind of PSYM. */ |
25818 | ||
25819 | static gdb_index_symbol_kind | |
25820 | symbol_kind (struct partial_symbol *psym) | |
25821 | { | |
25822 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
25823 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
25824 | ||
25825 | switch (domain) | |
25826 | { | |
25827 | case VAR_DOMAIN: | |
25828 | switch (aclass) | |
25829 | { | |
25830 | case LOC_BLOCK: | |
25831 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
25832 | case LOC_TYPEDEF: | |
25833 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
25834 | case LOC_COMPUTED: | |
25835 | case LOC_CONST_BYTES: | |
25836 | case LOC_OPTIMIZED_OUT: | |
25837 | case LOC_STATIC: | |
25838 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
25839 | case LOC_CONST: | |
25840 | /* Note: It's currently impossible to recognize psyms as enum values | |
25841 | short of reading the type info. For now punt. */ | |
25842 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
25843 | default: | |
25844 | /* There are other LOC_FOO values that one might want to classify | |
25845 | as variables, but dwarf2read.c doesn't currently use them. */ | |
25846 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
25847 | } | |
25848 | case STRUCT_DOMAIN: | |
25849 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
25850 | default: | |
25851 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
25852 | } | |
25853 | } | |
25854 | ||
9291a0cd | 25855 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 25856 | |
9291a0cd TT |
25857 | static void |
25858 | write_psymbols (struct mapped_symtab *symtab, | |
bc8f2430 | 25859 | std::unordered_set<partial_symbol *> &psyms_seen, |
9291a0cd TT |
25860 | struct partial_symbol **psymp, |
25861 | int count, | |
987d643c TT |
25862 | offset_type cu_index, |
25863 | int is_static) | |
9291a0cd TT |
25864 | { |
25865 | for (; count-- > 0; ++psymp) | |
25866 | { | |
156942c7 | 25867 | struct partial_symbol *psym = *psymp; |
987d643c | 25868 | |
156942c7 | 25869 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 25870 | error (_("Ada is not currently supported by the index")); |
987d643c | 25871 | |
987d643c | 25872 | /* Only add a given psymbol once. */ |
bc8f2430 | 25873 | if (psyms_seen.insert (psym).second) |
987d643c | 25874 | { |
156942c7 DE |
25875 | gdb_index_symbol_kind kind = symbol_kind (psym); |
25876 | ||
156942c7 DE |
25877 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), |
25878 | is_static, kind, cu_index); | |
987d643c | 25879 | } |
9291a0cd TT |
25880 | } |
25881 | } | |
25882 | ||
1fd400ff TT |
25883 | /* A helper struct used when iterating over debug_types. */ |
25884 | struct signatured_type_index_data | |
25885 | { | |
bc8f2430 JK |
25886 | signatured_type_index_data (data_buf &types_list_, |
25887 | std::unordered_set<partial_symbol *> &psyms_seen_) | |
25888 | : types_list (types_list_), psyms_seen (psyms_seen_) | |
25889 | {} | |
25890 | ||
1fd400ff TT |
25891 | struct objfile *objfile; |
25892 | struct mapped_symtab *symtab; | |
bc8f2430 JK |
25893 | data_buf &types_list; |
25894 | std::unordered_set<partial_symbol *> &psyms_seen; | |
1fd400ff TT |
25895 | int cu_index; |
25896 | }; | |
25897 | ||
25898 | /* A helper function that writes a single signatured_type to an | |
25899 | obstack. */ | |
b89be57b | 25900 | |
1fd400ff TT |
25901 | static int |
25902 | write_one_signatured_type (void **slot, void *d) | |
25903 | { | |
9a3c8263 SM |
25904 | struct signatured_type_index_data *info |
25905 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 25906 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 25907 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
25908 | |
25909 | write_psymbols (info->symtab, | |
987d643c | 25910 | info->psyms_seen, |
af5bf4ad | 25911 | &info->objfile->global_psymbols[psymtab->globals_offset], |
987d643c TT |
25912 | psymtab->n_global_syms, info->cu_index, |
25913 | 0); | |
1fd400ff | 25914 | write_psymbols (info->symtab, |
987d643c | 25915 | info->psyms_seen, |
af5bf4ad | 25916 | &info->objfile->static_psymbols[psymtab->statics_offset], |
987d643c TT |
25917 | psymtab->n_static_syms, info->cu_index, |
25918 | 1); | |
1fd400ff | 25919 | |
c2f134ac PA |
25920 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, |
25921 | to_underlying (entry->per_cu.sect_off)); | |
25922 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, | |
25923 | to_underlying (entry->type_offset_in_tu)); | |
25924 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, entry->signature); | |
1fd400ff TT |
25925 | |
25926 | ++info->cu_index; | |
25927 | ||
25928 | return 1; | |
25929 | } | |
25930 | ||
e8f8bcb3 PA |
25931 | /* Recurse into all "included" dependencies and count their symbols as |
25932 | if they appeared in this psymtab. */ | |
25933 | ||
25934 | static void | |
25935 | recursively_count_psymbols (struct partial_symtab *psymtab, | |
25936 | size_t &psyms_seen) | |
25937 | { | |
25938 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
25939 | if (psymtab->dependencies[i]->user != NULL) | |
25940 | recursively_count_psymbols (psymtab->dependencies[i], | |
25941 | psyms_seen); | |
25942 | ||
25943 | psyms_seen += psymtab->n_global_syms; | |
25944 | psyms_seen += psymtab->n_static_syms; | |
25945 | } | |
25946 | ||
95554aad TT |
25947 | /* Recurse into all "included" dependencies and write their symbols as |
25948 | if they appeared in this psymtab. */ | |
25949 | ||
25950 | static void | |
25951 | recursively_write_psymbols (struct objfile *objfile, | |
25952 | struct partial_symtab *psymtab, | |
25953 | struct mapped_symtab *symtab, | |
bc8f2430 | 25954 | std::unordered_set<partial_symbol *> &psyms_seen, |
95554aad TT |
25955 | offset_type cu_index) |
25956 | { | |
25957 | int i; | |
25958 | ||
25959 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
25960 | if (psymtab->dependencies[i]->user != NULL) | |
25961 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
25962 | symtab, psyms_seen, cu_index); | |
25963 | ||
25964 | write_psymbols (symtab, | |
25965 | psyms_seen, | |
af5bf4ad | 25966 | &objfile->global_psymbols[psymtab->globals_offset], |
95554aad TT |
25967 | psymtab->n_global_syms, cu_index, |
25968 | 0); | |
25969 | write_psymbols (symtab, | |
25970 | psyms_seen, | |
af5bf4ad | 25971 | &objfile->static_psymbols[psymtab->statics_offset], |
95554aad TT |
25972 | psymtab->n_static_syms, cu_index, |
25973 | 1); | |
25974 | } | |
25975 | ||
437afbb8 JK |
25976 | /* DWARF-5 .debug_names builder. */ |
25977 | class debug_names | |
25978 | { | |
25979 | public: | |
25980 | debug_names (bool is_dwarf64, bfd_endian dwarf5_byte_order) | |
25981 | : m_dwarf5_byte_order (dwarf5_byte_order), | |
25982 | m_dwarf32 (dwarf5_byte_order), | |
25983 | m_dwarf64 (dwarf5_byte_order), | |
25984 | m_dwarf (is_dwarf64 | |
25985 | ? static_cast<dwarf &> (m_dwarf64) | |
25986 | : static_cast<dwarf &> (m_dwarf32)), | |
25987 | m_name_table_string_offs (m_dwarf.name_table_string_offs), | |
25988 | m_name_table_entry_offs (m_dwarf.name_table_entry_offs) | |
25989 | {} | |
9291a0cd | 25990 | |
437afbb8 JK |
25991 | /* Insert one symbol. */ |
25992 | void insert (const partial_symbol *psym, int cu_index, bool is_static) | |
25993 | { | |
25994 | const int dwarf_tag = psymbol_tag (psym); | |
25995 | if (dwarf_tag == 0) | |
25996 | return; | |
25997 | const char *const name = SYMBOL_SEARCH_NAME (psym); | |
25998 | const auto insertpair | |
25999 | = m_name_to_value_set.emplace (c_str_view (name), | |
26000 | std::set<symbol_value> ()); | |
26001 | std::set<symbol_value> &value_set = insertpair.first->second; | |
26002 | value_set.emplace (symbol_value (dwarf_tag, cu_index, is_static)); | |
26003 | } | |
9291a0cd | 26004 | |
437afbb8 JK |
26005 | /* Build all the tables. All symbols must be already inserted. |
26006 | This function does not call file_write, caller has to do it | |
26007 | afterwards. */ | |
26008 | void build () | |
26009 | { | |
26010 | /* Verify the build method has not be called twice. */ | |
26011 | gdb_assert (m_abbrev_table.empty ()); | |
26012 | const size_t name_count = m_name_to_value_set.size (); | |
26013 | m_bucket_table.resize | |
26014 | (std::pow (2, std::ceil (std::log2 (name_count * 4 / 3)))); | |
26015 | m_hash_table.reserve (name_count); | |
26016 | m_name_table_string_offs.reserve (name_count); | |
26017 | m_name_table_entry_offs.reserve (name_count); | |
26018 | ||
26019 | /* Map each hash of symbol to its name and value. */ | |
26020 | struct hash_it_pair | |
26021 | { | |
26022 | uint32_t hash; | |
26023 | decltype (m_name_to_value_set)::const_iterator it; | |
26024 | }; | |
26025 | std::vector<std::forward_list<hash_it_pair>> bucket_hash; | |
26026 | bucket_hash.resize (m_bucket_table.size ()); | |
26027 | for (decltype (m_name_to_value_set)::const_iterator it | |
26028 | = m_name_to_value_set.cbegin (); | |
26029 | it != m_name_to_value_set.cend (); | |
26030 | ++it) | |
26031 | { | |
26032 | const char *const name = it->first.c_str (); | |
26033 | const uint32_t hash = dwarf5_djb_hash (name); | |
26034 | hash_it_pair hashitpair; | |
26035 | hashitpair.hash = hash; | |
26036 | hashitpair.it = it; | |
26037 | auto &slot = bucket_hash[hash % bucket_hash.size()]; | |
26038 | slot.push_front (std::move (hashitpair)); | |
26039 | } | |
26040 | for (size_t bucket_ix = 0; bucket_ix < bucket_hash.size (); ++bucket_ix) | |
26041 | { | |
26042 | const std::forward_list<hash_it_pair> &hashitlist | |
26043 | = bucket_hash[bucket_ix]; | |
26044 | if (hashitlist.empty ()) | |
26045 | continue; | |
26046 | uint32_t &bucket_slot = m_bucket_table[bucket_ix]; | |
26047 | /* The hashes array is indexed starting at 1. */ | |
26048 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&bucket_slot), | |
26049 | sizeof (bucket_slot), m_dwarf5_byte_order, | |
26050 | m_hash_table.size () + 1); | |
26051 | for (const hash_it_pair &hashitpair : hashitlist) | |
26052 | { | |
26053 | m_hash_table.push_back (0); | |
26054 | store_unsigned_integer (reinterpret_cast<gdb_byte *> | |
26055 | (&m_hash_table.back ()), | |
26056 | sizeof (m_hash_table.back ()), | |
26057 | m_dwarf5_byte_order, hashitpair.hash); | |
26058 | const c_str_view &name = hashitpair.it->first; | |
26059 | const std::set<symbol_value> &value_set = hashitpair.it->second; | |
26060 | m_name_table_string_offs.push_back_reorder | |
26061 | (m_debugstrlookup.lookup (name.c_str ())); | |
26062 | m_name_table_entry_offs.push_back_reorder (m_entry_pool.size ()); | |
26063 | gdb_assert (!value_set.empty ()); | |
26064 | for (const symbol_value &value : value_set) | |
26065 | { | |
26066 | int &idx = m_indexkey_to_idx[index_key (value.dwarf_tag, | |
26067 | value.is_static)]; | |
26068 | if (idx == 0) | |
26069 | { | |
26070 | idx = m_idx_next++; | |
26071 | m_abbrev_table.append_unsigned_leb128 (idx); | |
26072 | m_abbrev_table.append_unsigned_leb128 (value.dwarf_tag); | |
26073 | m_abbrev_table.append_unsigned_leb128 (DW_IDX_compile_unit); | |
26074 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_udata); | |
26075 | m_abbrev_table.append_unsigned_leb128 (value.is_static | |
26076 | ? DW_IDX_GNU_internal | |
26077 | : DW_IDX_GNU_external); | |
26078 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_flag_present); | |
26079 | ||
26080 | /* Terminate attributes list. */ | |
26081 | m_abbrev_table.append_unsigned_leb128 (0); | |
26082 | m_abbrev_table.append_unsigned_leb128 (0); | |
26083 | } | |
9291a0cd | 26084 | |
437afbb8 JK |
26085 | m_entry_pool.append_unsigned_leb128 (idx); |
26086 | m_entry_pool.append_unsigned_leb128 (value.cu_index); | |
26087 | } | |
9291a0cd | 26088 | |
437afbb8 JK |
26089 | /* Terminate the list of CUs. */ |
26090 | m_entry_pool.append_unsigned_leb128 (0); | |
26091 | } | |
26092 | } | |
26093 | gdb_assert (m_hash_table.size () == name_count); | |
987d643c | 26094 | |
437afbb8 JK |
26095 | /* Terminate tags list. */ |
26096 | m_abbrev_table.append_unsigned_leb128 (0); | |
26097 | } | |
0a5429f6 | 26098 | |
437afbb8 JK |
26099 | /* Return .debug_names bucket count. This must be called only after |
26100 | calling the build method. */ | |
26101 | uint32_t bucket_count () const | |
26102 | { | |
26103 | /* Verify the build method has been already called. */ | |
26104 | gdb_assert (!m_abbrev_table.empty ()); | |
26105 | const uint32_t retval = m_bucket_table.size (); | |
26106 | ||
26107 | /* Check for overflow. */ | |
26108 | gdb_assert (retval == m_bucket_table.size ()); | |
26109 | return retval; | |
26110 | } | |
26111 | ||
26112 | /* Return .debug_names names count. This must be called only after | |
26113 | calling the build method. */ | |
26114 | uint32_t name_count () const | |
26115 | { | |
26116 | /* Verify the build method has been already called. */ | |
26117 | gdb_assert (!m_abbrev_table.empty ()); | |
26118 | const uint32_t retval = m_hash_table.size (); | |
26119 | ||
26120 | /* Check for overflow. */ | |
26121 | gdb_assert (retval == m_hash_table.size ()); | |
26122 | return retval; | |
26123 | } | |
26124 | ||
26125 | /* Return number of bytes of .debug_names abbreviation table. This | |
26126 | must be called only after calling the build method. */ | |
26127 | uint32_t abbrev_table_bytes () const | |
26128 | { | |
26129 | gdb_assert (!m_abbrev_table.empty ()); | |
26130 | return m_abbrev_table.size (); | |
26131 | } | |
26132 | ||
26133 | /* Recurse into all "included" dependencies and store their symbols | |
26134 | as if they appeared in this psymtab. */ | |
26135 | void recursively_write_psymbols | |
26136 | (struct objfile *objfile, | |
26137 | struct partial_symtab *psymtab, | |
26138 | std::unordered_set<partial_symbol *> &psyms_seen, | |
26139 | int cu_index) | |
26140 | { | |
26141 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26142 | if (psymtab->dependencies[i]->user != NULL) | |
26143 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26144 | psyms_seen, cu_index); | |
26145 | ||
26146 | write_psymbols (psyms_seen, | |
26147 | &objfile->global_psymbols[psymtab->globals_offset], | |
26148 | psymtab->n_global_syms, cu_index, false); | |
26149 | write_psymbols (psyms_seen, | |
26150 | &objfile->static_psymbols[psymtab->statics_offset], | |
26151 | psymtab->n_static_syms, cu_index, true); | |
26152 | } | |
26153 | ||
26154 | /* Return number of bytes the .debug_names section will have. This | |
26155 | must be called only after calling the build method. */ | |
26156 | size_t bytes () const | |
26157 | { | |
26158 | /* Verify the build method has been already called. */ | |
26159 | gdb_assert (!m_abbrev_table.empty ()); | |
26160 | size_t expected_bytes = 0; | |
26161 | expected_bytes += m_bucket_table.size () * sizeof (m_bucket_table[0]); | |
26162 | expected_bytes += m_hash_table.size () * sizeof (m_hash_table[0]); | |
26163 | expected_bytes += m_name_table_string_offs.bytes (); | |
26164 | expected_bytes += m_name_table_entry_offs.bytes (); | |
26165 | expected_bytes += m_abbrev_table.size (); | |
26166 | expected_bytes += m_entry_pool.size (); | |
26167 | return expected_bytes; | |
26168 | } | |
26169 | ||
26170 | /* Write .debug_names to FILE_NAMES and .debug_str addition to | |
26171 | FILE_STR. This must be called only after calling the build | |
26172 | method. */ | |
26173 | void file_write (FILE *file_names, FILE *file_str) const | |
26174 | { | |
26175 | /* Verify the build method has been already called. */ | |
26176 | gdb_assert (!m_abbrev_table.empty ()); | |
26177 | ::file_write (file_names, m_bucket_table); | |
26178 | ::file_write (file_names, m_hash_table); | |
26179 | m_name_table_string_offs.file_write (file_names); | |
26180 | m_name_table_entry_offs.file_write (file_names); | |
26181 | m_abbrev_table.file_write (file_names); | |
26182 | m_entry_pool.file_write (file_names); | |
26183 | m_debugstrlookup.file_write (file_str); | |
26184 | } | |
26185 | ||
26186 | private: | |
26187 | ||
26188 | /* Storage for symbol names mapping them to their .debug_str section | |
26189 | offsets. */ | |
26190 | class debug_str_lookup | |
26191 | { | |
26192 | public: | |
26193 | ||
26194 | /* Object costructor to be called for current DWARF2_PER_OBJFILE. | |
26195 | All .debug_str section strings are automatically stored. */ | |
26196 | debug_str_lookup () | |
26197 | : m_abfd (dwarf2_per_objfile->objfile->obfd) | |
26198 | { | |
26199 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
26200 | &dwarf2_per_objfile->str); | |
26201 | if (dwarf2_per_objfile->str.buffer == NULL) | |
26202 | return; | |
26203 | for (const gdb_byte *data = dwarf2_per_objfile->str.buffer; | |
26204 | data < (dwarf2_per_objfile->str.buffer | |
26205 | + dwarf2_per_objfile->str.size);) | |
26206 | { | |
26207 | const char *const s = reinterpret_cast<const char *> (data); | |
26208 | const auto insertpair | |
26209 | = m_str_table.emplace (c_str_view (s), | |
26210 | data - dwarf2_per_objfile->str.buffer); | |
26211 | if (!insertpair.second) | |
26212 | complaint (&symfile_complaints, | |
26213 | _("Duplicate string \"%s\" in " | |
26214 | ".debug_str section [in module %s]"), | |
26215 | s, bfd_get_filename (m_abfd)); | |
26216 | data += strlen (s) + 1; | |
26217 | } | |
26218 | } | |
26219 | ||
26220 | /* Return offset of symbol name S in the .debug_str section. Add | |
26221 | such symbol to the section's end if it does not exist there | |
26222 | yet. */ | |
26223 | size_t lookup (const char *s) | |
26224 | { | |
26225 | const auto it = m_str_table.find (c_str_view (s)); | |
26226 | if (it != m_str_table.end ()) | |
26227 | return it->second; | |
26228 | const size_t offset = (dwarf2_per_objfile->str.size | |
26229 | + m_str_add_buf.size ()); | |
26230 | m_str_table.emplace (c_str_view (s), offset); | |
26231 | m_str_add_buf.append_cstr0 (s); | |
26232 | return offset; | |
26233 | } | |
26234 | ||
26235 | /* Append the end of the .debug_str section to FILE. */ | |
26236 | void file_write (FILE *file) const | |
26237 | { | |
26238 | m_str_add_buf.file_write (file); | |
26239 | } | |
26240 | ||
26241 | private: | |
26242 | std::unordered_map<c_str_view, size_t, c_str_view_hasher> m_str_table; | |
26243 | bfd *const m_abfd; | |
26244 | ||
26245 | /* Data to add at the end of .debug_str for new needed symbol names. */ | |
26246 | data_buf m_str_add_buf; | |
26247 | }; | |
26248 | ||
26249 | /* Container to map used DWARF tags to their .debug_names abbreviation | |
26250 | tags. */ | |
26251 | class index_key | |
26252 | { | |
26253 | public: | |
26254 | index_key (int dwarf_tag_, bool is_static_) | |
26255 | : dwarf_tag (dwarf_tag_), is_static (is_static_) | |
26256 | { | |
26257 | } | |
26258 | ||
26259 | bool | |
26260 | operator== (const index_key &other) const | |
26261 | { | |
26262 | return dwarf_tag == other.dwarf_tag && is_static == other.is_static; | |
26263 | } | |
26264 | ||
26265 | const int dwarf_tag; | |
26266 | const bool is_static; | |
26267 | }; | |
26268 | ||
26269 | /* Provide std::unordered_map::hasher for index_key. */ | |
26270 | class index_key_hasher | |
26271 | { | |
26272 | public: | |
26273 | size_t | |
26274 | operator () (const index_key &key) const | |
26275 | { | |
26276 | return (std::hash<int>() (key.dwarf_tag) << 1) | key.is_static; | |
26277 | } | |
26278 | }; | |
26279 | ||
26280 | /* Parameters of one symbol entry. */ | |
26281 | class symbol_value | |
26282 | { | |
26283 | public: | |
26284 | const int dwarf_tag, cu_index; | |
26285 | const bool is_static; | |
26286 | ||
26287 | symbol_value (int dwarf_tag_, int cu_index_, bool is_static_) | |
26288 | : dwarf_tag (dwarf_tag_), cu_index (cu_index_), is_static (is_static_) | |
26289 | {} | |
26290 | ||
26291 | bool | |
26292 | operator< (const symbol_value &other) const | |
26293 | { | |
26294 | #define X(n) \ | |
26295 | do \ | |
26296 | { \ | |
26297 | if (n < other.n) \ | |
26298 | return true; \ | |
26299 | if (n > other.n) \ | |
26300 | return false; \ | |
26301 | } \ | |
26302 | while (0) | |
26303 | X (dwarf_tag); | |
26304 | X (is_static); | |
26305 | X (cu_index); | |
26306 | #undef X | |
26307 | return false; | |
26308 | } | |
26309 | }; | |
26310 | ||
26311 | /* Abstract base class to unify DWARF-32 and DWARF-64 name table | |
26312 | output. */ | |
26313 | class offset_vec | |
26314 | { | |
26315 | protected: | |
26316 | const bfd_endian dwarf5_byte_order; | |
26317 | public: | |
26318 | explicit offset_vec (bfd_endian dwarf5_byte_order_) | |
26319 | : dwarf5_byte_order (dwarf5_byte_order_) | |
26320 | {} | |
26321 | ||
26322 | /* Call std::vector::reserve for NELEM elements. */ | |
26323 | virtual void reserve (size_t nelem) = 0; | |
26324 | ||
26325 | /* Call std::vector::push_back with store_unsigned_integer byte | |
26326 | reordering for ELEM. */ | |
26327 | virtual void push_back_reorder (size_t elem) = 0; | |
26328 | ||
26329 | /* Return expected output size in bytes. */ | |
26330 | virtual size_t bytes () const = 0; | |
26331 | ||
26332 | /* Write name table to FILE. */ | |
26333 | virtual void file_write (FILE *file) const = 0; | |
26334 | }; | |
26335 | ||
26336 | /* Template to unify DWARF-32 and DWARF-64 output. */ | |
26337 | template<typename OffsetSize> | |
26338 | class offset_vec_tmpl : public offset_vec | |
26339 | { | |
26340 | public: | |
26341 | explicit offset_vec_tmpl (bfd_endian dwarf5_byte_order_) | |
26342 | : offset_vec (dwarf5_byte_order_) | |
26343 | {} | |
26344 | ||
26345 | /* Implement offset_vec::reserve. */ | |
26346 | void reserve (size_t nelem) override | |
26347 | { | |
26348 | m_vec.reserve (nelem); | |
26349 | } | |
26350 | ||
26351 | /* Implement offset_vec::push_back_reorder. */ | |
26352 | void push_back_reorder (size_t elem) override | |
26353 | { | |
26354 | m_vec.push_back (elem); | |
26355 | /* Check for overflow. */ | |
26356 | gdb_assert (m_vec.back () == elem); | |
26357 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&m_vec.back ()), | |
26358 | sizeof (m_vec.back ()), dwarf5_byte_order, elem); | |
26359 | } | |
26360 | ||
26361 | /* Implement offset_vec::bytes. */ | |
26362 | size_t bytes () const override | |
26363 | { | |
26364 | return m_vec.size () * sizeof (m_vec[0]); | |
26365 | } | |
26366 | ||
26367 | /* Implement offset_vec::file_write. */ | |
26368 | void file_write (FILE *file) const override | |
26369 | { | |
26370 | ::file_write (file, m_vec); | |
26371 | } | |
26372 | ||
26373 | private: | |
26374 | std::vector<OffsetSize> m_vec; | |
26375 | }; | |
26376 | ||
26377 | /* Base class to unify DWARF-32 and DWARF-64 .debug_names output | |
26378 | respecting name table width. */ | |
26379 | class dwarf | |
26380 | { | |
26381 | public: | |
26382 | offset_vec &name_table_string_offs, &name_table_entry_offs; | |
26383 | ||
26384 | dwarf (offset_vec &name_table_string_offs_, | |
26385 | offset_vec &name_table_entry_offs_) | |
26386 | : name_table_string_offs (name_table_string_offs_), | |
26387 | name_table_entry_offs (name_table_entry_offs_) | |
26388 | { | |
26389 | } | |
26390 | }; | |
e8f8bcb3 | 26391 | |
437afbb8 JK |
26392 | /* Template to unify DWARF-32 and DWARF-64 .debug_names output |
26393 | respecting name table width. */ | |
26394 | template<typename OffsetSize> | |
26395 | class dwarf_tmpl : public dwarf | |
26396 | { | |
26397 | public: | |
26398 | explicit dwarf_tmpl (bfd_endian dwarf5_byte_order_) | |
26399 | : dwarf (m_name_table_string_offs, m_name_table_entry_offs), | |
26400 | m_name_table_string_offs (dwarf5_byte_order_), | |
26401 | m_name_table_entry_offs (dwarf5_byte_order_) | |
26402 | {} | |
26403 | ||
26404 | private: | |
26405 | offset_vec_tmpl<OffsetSize> m_name_table_string_offs; | |
26406 | offset_vec_tmpl<OffsetSize> m_name_table_entry_offs; | |
26407 | }; | |
26408 | ||
26409 | /* Try to reconstruct original DWARF tag for given partial_symbol. | |
26410 | This function is not DWARF-5 compliant but it is sufficient for | |
26411 | GDB as a DWARF-5 index consumer. */ | |
26412 | static int psymbol_tag (const struct partial_symbol *psym) | |
26413 | { | |
26414 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
26415 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
26416 | ||
26417 | switch (domain) | |
26418 | { | |
26419 | case VAR_DOMAIN: | |
26420 | switch (aclass) | |
26421 | { | |
26422 | case LOC_BLOCK: | |
26423 | return DW_TAG_subprogram; | |
26424 | case LOC_TYPEDEF: | |
26425 | return DW_TAG_typedef; | |
26426 | case LOC_COMPUTED: | |
26427 | case LOC_CONST_BYTES: | |
26428 | case LOC_OPTIMIZED_OUT: | |
26429 | case LOC_STATIC: | |
26430 | return DW_TAG_variable; | |
26431 | case LOC_CONST: | |
26432 | /* Note: It's currently impossible to recognize psyms as enum values | |
26433 | short of reading the type info. For now punt. */ | |
26434 | return DW_TAG_variable; | |
26435 | default: | |
26436 | /* There are other LOC_FOO values that one might want to classify | |
26437 | as variables, but dwarf2read.c doesn't currently use them. */ | |
26438 | return DW_TAG_variable; | |
26439 | } | |
26440 | case STRUCT_DOMAIN: | |
26441 | return DW_TAG_structure_type; | |
26442 | default: | |
26443 | return 0; | |
26444 | } | |
26445 | } | |
26446 | ||
26447 | /* Call insert for all partial symbols and mark them in PSYMS_SEEN. */ | |
26448 | void write_psymbols (std::unordered_set<partial_symbol *> &psyms_seen, | |
26449 | struct partial_symbol **psymp, int count, int cu_index, | |
26450 | bool is_static) | |
26451 | { | |
26452 | for (; count-- > 0; ++psymp) | |
26453 | { | |
26454 | struct partial_symbol *psym = *psymp; | |
26455 | ||
26456 | if (SYMBOL_LANGUAGE (psym) == language_ada) | |
26457 | error (_("Ada is not currently supported by the index")); | |
26458 | ||
26459 | /* Only add a given psymbol once. */ | |
26460 | if (psyms_seen.insert (psym).second) | |
26461 | insert (psym, cu_index, is_static); | |
26462 | } | |
26463 | } | |
26464 | ||
26465 | /* Store value of each symbol. */ | |
26466 | std::unordered_map<c_str_view, std::set<symbol_value>, c_str_view_hasher> | |
26467 | m_name_to_value_set; | |
26468 | ||
26469 | /* Tables of DWARF-5 .debug_names. They are in object file byte | |
26470 | order. */ | |
26471 | std::vector<uint32_t> m_bucket_table; | |
26472 | std::vector<uint32_t> m_hash_table; | |
26473 | ||
26474 | const bfd_endian m_dwarf5_byte_order; | |
26475 | dwarf_tmpl<uint32_t> m_dwarf32; | |
26476 | dwarf_tmpl<uint64_t> m_dwarf64; | |
26477 | dwarf &m_dwarf; | |
26478 | offset_vec &m_name_table_string_offs, &m_name_table_entry_offs; | |
26479 | debug_str_lookup m_debugstrlookup; | |
26480 | ||
26481 | /* Map each used .debug_names abbreviation tag parameter to its | |
26482 | index value. */ | |
26483 | std::unordered_map<index_key, int, index_key_hasher> m_indexkey_to_idx; | |
26484 | ||
26485 | /* Next unused .debug_names abbreviation tag for | |
26486 | m_indexkey_to_idx. */ | |
26487 | int m_idx_next = 1; | |
26488 | ||
26489 | /* .debug_names abbreviation table. */ | |
26490 | data_buf m_abbrev_table; | |
26491 | ||
26492 | /* .debug_names entry pool. */ | |
26493 | data_buf m_entry_pool; | |
26494 | }; | |
26495 | ||
26496 | /* Return iff any of the needed offsets does not fit into 32-bit | |
26497 | .debug_names section. */ | |
26498 | ||
26499 | static bool | |
26500 | check_dwarf64_offsets () | |
26501 | { | |
26502 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
26503 | { | |
26504 | const dwarf2_per_cu_data &per_cu = *dwarf2_per_objfile->all_comp_units[i]; | |
26505 | ||
26506 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
26507 | return true; | |
26508 | } | |
26509 | for (int i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
26510 | { | |
26511 | const signatured_type &sigtype = *dwarf2_per_objfile->all_type_units[i]; | |
26512 | const dwarf2_per_cu_data &per_cu = sigtype.per_cu; | |
26513 | ||
26514 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
26515 | return true; | |
26516 | } | |
26517 | return false; | |
26518 | } | |
26519 | ||
26520 | /* The psyms_seen set is potentially going to be largish (~40k | |
26521 | elements when indexing a -g3 build of GDB itself). Estimate the | |
26522 | number of elements in order to avoid too many rehashes, which | |
26523 | require rebuilding buckets and thus many trips to | |
26524 | malloc/free. */ | |
26525 | ||
26526 | static size_t | |
26527 | psyms_seen_size () | |
26528 | { | |
e8f8bcb3 PA |
26529 | size_t psyms_count = 0; |
26530 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
26531 | { | |
26532 | struct dwarf2_per_cu_data *per_cu | |
26533 | = dwarf2_per_objfile->all_comp_units[i]; | |
26534 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
26535 | ||
26536 | if (psymtab != NULL && psymtab->user == NULL) | |
26537 | recursively_count_psymbols (psymtab, psyms_count); | |
26538 | } | |
26539 | /* Generating an index for gdb itself shows a ratio of | |
26540 | TOTAL_SEEN_SYMS/UNIQUE_SYMS or ~5. 4 seems like a good bet. */ | |
437afbb8 JK |
26541 | return psyms_count / 4; |
26542 | } | |
26543 | ||
26544 | /* Write new .gdb_index section for OBJFILE into OUT_FILE. | |
26545 | Return how many bytes were expected to be written into OUT_FILE. */ | |
26546 | ||
26547 | static size_t | |
26548 | write_gdbindex (struct objfile *objfile, FILE *out_file) | |
26549 | { | |
26550 | mapped_symtab symtab; | |
26551 | data_buf cu_list; | |
26552 | ||
26553 | /* While we're scanning CU's create a table that maps a psymtab pointer | |
26554 | (which is what addrmap records) to its index (which is what is recorded | |
26555 | in the index file). This will later be needed to write the address | |
26556 | table. */ | |
26557 | psym_index_map cu_index_htab; | |
26558 | cu_index_htab.reserve (dwarf2_per_objfile->n_comp_units); | |
26559 | ||
26560 | /* The CU list is already sorted, so we don't need to do additional | |
26561 | work here. Also, the debug_types entries do not appear in | |
26562 | all_comp_units, but only in their own hash table. */ | |
26563 | ||
26564 | std::unordered_set<partial_symbol *> psyms_seen (psyms_seen_size ()); | |
bc8f2430 | 26565 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd | 26566 | { |
3e43a32a MS |
26567 | struct dwarf2_per_cu_data *per_cu |
26568 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 26569 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 26570 | |
92fac807 JK |
26571 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
26572 | It may be referenced from a local scope but in such case it does not | |
26573 | need to be present in .gdb_index. */ | |
26574 | if (psymtab == NULL) | |
26575 | continue; | |
26576 | ||
95554aad | 26577 | if (psymtab->user == NULL) |
bc8f2430 JK |
26578 | recursively_write_psymbols (objfile, psymtab, &symtab, |
26579 | psyms_seen, i); | |
9291a0cd | 26580 | |
bc8f2430 JK |
26581 | const auto insertpair = cu_index_htab.emplace (psymtab, i); |
26582 | gdb_assert (insertpair.second); | |
9291a0cd | 26583 | |
c2f134ac PA |
26584 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, |
26585 | to_underlying (per_cu->sect_off)); | |
26586 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, per_cu->length); | |
9291a0cd TT |
26587 | } |
26588 | ||
0a5429f6 | 26589 | /* Dump the address map. */ |
bc8f2430 JK |
26590 | data_buf addr_vec; |
26591 | write_address_map (objfile, addr_vec, cu_index_htab); | |
0a5429f6 | 26592 | |
1fd400ff | 26593 | /* Write out the .debug_type entries, if any. */ |
bc8f2430 | 26594 | data_buf types_cu_list; |
1fd400ff TT |
26595 | if (dwarf2_per_objfile->signatured_types) |
26596 | { | |
bc8f2430 JK |
26597 | signatured_type_index_data sig_data (types_cu_list, |
26598 | psyms_seen); | |
1fd400ff TT |
26599 | |
26600 | sig_data.objfile = objfile; | |
bc8f2430 | 26601 | sig_data.symtab = &symtab; |
1fd400ff TT |
26602 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
26603 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
26604 | write_one_signatured_type, &sig_data); | |
26605 | } | |
26606 | ||
156942c7 DE |
26607 | /* Now that we've processed all symbols we can shrink their cu_indices |
26608 | lists. */ | |
bc8f2430 | 26609 | uniquify_cu_indices (&symtab); |
156942c7 | 26610 | |
bc8f2430 JK |
26611 | data_buf symtab_vec, constant_pool; |
26612 | write_hash_table (&symtab, symtab_vec, constant_pool); | |
9291a0cd | 26613 | |
bc8f2430 JK |
26614 | data_buf contents; |
26615 | const offset_type size_of_contents = 6 * sizeof (offset_type); | |
26616 | offset_type total_len = size_of_contents; | |
9291a0cd TT |
26617 | |
26618 | /* The version number. */ | |
bc8f2430 | 26619 | contents.append_data (MAYBE_SWAP (8)); |
9291a0cd TT |
26620 | |
26621 | /* The offset of the CU list from the start of the file. */ | |
bc8f2430 JK |
26622 | contents.append_data (MAYBE_SWAP (total_len)); |
26623 | total_len += cu_list.size (); | |
9291a0cd | 26624 | |
1fd400ff | 26625 | /* The offset of the types CU list from the start of the file. */ |
bc8f2430 JK |
26626 | contents.append_data (MAYBE_SWAP (total_len)); |
26627 | total_len += types_cu_list.size (); | |
1fd400ff | 26628 | |
9291a0cd | 26629 | /* The offset of the address table from the start of the file. */ |
bc8f2430 JK |
26630 | contents.append_data (MAYBE_SWAP (total_len)); |
26631 | total_len += addr_vec.size (); | |
9291a0cd TT |
26632 | |
26633 | /* The offset of the symbol table from the start of the file. */ | |
bc8f2430 JK |
26634 | contents.append_data (MAYBE_SWAP (total_len)); |
26635 | total_len += symtab_vec.size (); | |
9291a0cd TT |
26636 | |
26637 | /* The offset of the constant pool from the start of the file. */ | |
bc8f2430 JK |
26638 | contents.append_data (MAYBE_SWAP (total_len)); |
26639 | total_len += constant_pool.size (); | |
9291a0cd | 26640 | |
bc8f2430 | 26641 | gdb_assert (contents.size () == size_of_contents); |
9291a0cd | 26642 | |
bc8f2430 JK |
26643 | contents.file_write (out_file); |
26644 | cu_list.file_write (out_file); | |
26645 | types_cu_list.file_write (out_file); | |
26646 | addr_vec.file_write (out_file); | |
26647 | symtab_vec.file_write (out_file); | |
26648 | constant_pool.file_write (out_file); | |
9291a0cd | 26649 | |
437afbb8 JK |
26650 | return total_len; |
26651 | } | |
26652 | ||
26653 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
26654 | static const gdb_byte dwarf5_gdb_augmentation[] = { 'G', 'D', 'B', 0 }; | |
26655 | ||
26656 | /* Write a new .debug_names section for OBJFILE into OUT_FILE, write | |
26657 | needed addition to .debug_str section to OUT_FILE_STR. Return how | |
26658 | many bytes were expected to be written into OUT_FILE. */ | |
26659 | ||
26660 | static size_t | |
26661 | write_debug_names (struct objfile *objfile, FILE *out_file, FILE *out_file_str) | |
26662 | { | |
26663 | const bool dwarf5_is_dwarf64 = check_dwarf64_offsets (); | |
26664 | const int dwarf5_offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
26665 | const enum bfd_endian dwarf5_byte_order | |
26666 | = gdbarch_byte_order (get_objfile_arch (objfile)); | |
26667 | ||
26668 | /* The CU list is already sorted, so we don't need to do additional | |
26669 | work here. Also, the debug_types entries do not appear in | |
26670 | all_comp_units, but only in their own hash table. */ | |
26671 | data_buf cu_list; | |
26672 | debug_names nametable (dwarf5_is_dwarf64, dwarf5_byte_order); | |
26673 | std::unordered_set<partial_symbol *> psyms_seen (psyms_seen_size ()); | |
26674 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
26675 | { | |
26676 | const dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->all_comp_units[i]; | |
26677 | partial_symtab *psymtab = per_cu->v.psymtab; | |
26678 | ||
26679 | /* CU of a shared file from 'dwz -m' may be unused by this main | |
26680 | file. It may be referenced from a local scope but in such | |
26681 | case it does not need to be present in .debug_names. */ | |
26682 | if (psymtab == NULL) | |
26683 | continue; | |
26684 | ||
26685 | if (psymtab->user == NULL) | |
26686 | nametable.recursively_write_psymbols (objfile, psymtab, psyms_seen, i); | |
26687 | ||
26688 | cu_list.append_uint (dwarf5_offset_size, dwarf5_byte_order, | |
26689 | to_underlying (per_cu->sect_off)); | |
26690 | } | |
26691 | nametable.build (); | |
26692 | ||
26693 | /* No addr_vec - DWARF-5 uses .debug_aranges generated by GCC. */ | |
26694 | ||
26695 | data_buf types_cu_list; | |
26696 | for (int i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
26697 | { | |
26698 | const signatured_type &sigtype = *dwarf2_per_objfile->all_type_units[i]; | |
26699 | const dwarf2_per_cu_data &per_cu = sigtype.per_cu; | |
26700 | ||
26701 | types_cu_list.append_uint (dwarf5_offset_size, dwarf5_byte_order, | |
26702 | to_underlying (per_cu.sect_off)); | |
26703 | } | |
26704 | ||
26705 | const offset_type bytes_of_header | |
26706 | = ((dwarf5_is_dwarf64 ? 12 : 4) | |
26707 | + 2 + 2 + 7 * 4 | |
26708 | + sizeof (dwarf5_gdb_augmentation)); | |
26709 | size_t expected_bytes = 0; | |
26710 | expected_bytes += bytes_of_header; | |
26711 | expected_bytes += cu_list.size (); | |
26712 | expected_bytes += types_cu_list.size (); | |
26713 | expected_bytes += nametable.bytes (); | |
26714 | data_buf header; | |
26715 | ||
26716 | if (!dwarf5_is_dwarf64) | |
26717 | { | |
26718 | const uint64_t size64 = expected_bytes - 4; | |
26719 | gdb_assert (size64 < 0xfffffff0); | |
26720 | header.append_uint (4, dwarf5_byte_order, size64); | |
26721 | } | |
26722 | else | |
26723 | { | |
26724 | header.append_uint (4, dwarf5_byte_order, 0xffffffff); | |
26725 | header.append_uint (8, dwarf5_byte_order, expected_bytes - 12); | |
26726 | } | |
26727 | ||
26728 | /* The version number. */ | |
26729 | header.append_uint (2, dwarf5_byte_order, 5); | |
26730 | ||
26731 | /* Padding. */ | |
26732 | header.append_uint (2, dwarf5_byte_order, 0); | |
26733 | ||
26734 | /* comp_unit_count - The number of CUs in the CU list. */ | |
26735 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_comp_units); | |
26736 | ||
26737 | /* local_type_unit_count - The number of TUs in the local TU | |
26738 | list. */ | |
26739 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_type_units); | |
26740 | ||
26741 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
26742 | list. */ | |
26743 | header.append_uint (4, dwarf5_byte_order, 0); | |
26744 | ||
26745 | /* bucket_count - The number of hash buckets in the hash lookup | |
26746 | table. */ | |
26747 | header.append_uint (4, dwarf5_byte_order, nametable.bucket_count ()); | |
26748 | ||
26749 | /* name_count - The number of unique names in the index. */ | |
26750 | header.append_uint (4, dwarf5_byte_order, nametable.name_count ()); | |
26751 | ||
26752 | /* abbrev_table_size - The size in bytes of the abbreviations | |
26753 | table. */ | |
26754 | header.append_uint (4, dwarf5_byte_order, nametable.abbrev_table_bytes ()); | |
26755 | ||
26756 | /* augmentation_string_size - The size in bytes of the augmentation | |
26757 | string. This value is rounded up to a multiple of 4. */ | |
26758 | static_assert (sizeof (dwarf5_gdb_augmentation) % 4 == 0, ""); | |
26759 | header.append_uint (4, dwarf5_byte_order, sizeof (dwarf5_gdb_augmentation)); | |
26760 | header.append_data (dwarf5_gdb_augmentation); | |
26761 | ||
26762 | gdb_assert (header.size () == bytes_of_header); | |
26763 | ||
26764 | header.file_write (out_file); | |
26765 | cu_list.file_write (out_file); | |
26766 | types_cu_list.file_write (out_file); | |
26767 | nametable.file_write (out_file, out_file_str); | |
26768 | ||
26769 | return expected_bytes; | |
26770 | } | |
26771 | ||
26772 | /* Assert that FILE's size is EXPECTED_SIZE. Assumes file's seek | |
26773 | position is at the end of the file. */ | |
26774 | ||
26775 | static void | |
26776 | assert_file_size (FILE *file, const char *filename, size_t expected_size) | |
26777 | { | |
26778 | const auto file_size = ftell (file); | |
26779 | if (file_size == -1) | |
26780 | error (_("Can't get `%s' size"), filename); | |
26781 | gdb_assert (file_size == expected_size); | |
26782 | } | |
26783 | ||
26784 | /* An index variant. */ | |
26785 | enum dw_index_kind | |
26786 | { | |
26787 | /* GDB's own .gdb_index format. */ | |
26788 | GDB_INDEX, | |
26789 | ||
26790 | /* DWARF5 .debug_names. */ | |
26791 | DEBUG_NAMES, | |
26792 | }; | |
26793 | ||
26794 | /* Create an index file for OBJFILE in the directory DIR. */ | |
26795 | ||
26796 | static void | |
26797 | write_psymtabs_to_index (struct objfile *objfile, const char *dir, | |
26798 | dw_index_kind index_kind) | |
26799 | { | |
26800 | if (dwarf2_per_objfile->using_index) | |
26801 | error (_("Cannot use an index to create the index")); | |
26802 | ||
26803 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) | |
26804 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
26805 | ||
26806 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) | |
26807 | return; | |
26808 | ||
26809 | struct stat st; | |
26810 | if (stat (objfile_name (objfile), &st) < 0) | |
26811 | perror_with_name (objfile_name (objfile)); | |
26812 | ||
26813 | std::string filename (std::string (dir) + SLASH_STRING | |
26814 | + lbasename (objfile_name (objfile)) | |
26815 | + (index_kind == dw_index_kind::DEBUG_NAMES | |
26816 | ? INDEX5_SUFFIX : INDEX4_SUFFIX)); | |
26817 | ||
26818 | FILE *out_file = gdb_fopen_cloexec (filename.c_str (), "wb").release (); | |
26819 | if (!out_file) | |
26820 | error (_("Can't open `%s' for writing"), filename.c_str ()); | |
26821 | ||
26822 | /* Order matters here; we want FILE to be closed before FILENAME is | |
26823 | unlinked, because on MS-Windows one cannot delete a file that is | |
26824 | still open. (Don't call anything here that might throw until | |
26825 | file_closer is created.) */ | |
26826 | gdb::unlinker unlink_file (filename.c_str ()); | |
26827 | gdb_file_up close_out_file (out_file); | |
26828 | ||
26829 | if (index_kind == dw_index_kind::DEBUG_NAMES) | |
26830 | { | |
26831 | std::string filename_str (std::string (dir) + SLASH_STRING | |
26832 | + lbasename (objfile_name (objfile)) | |
26833 | + DEBUG_STR_SUFFIX); | |
26834 | FILE *out_file_str | |
26835 | = gdb_fopen_cloexec (filename_str.c_str (), "wb").release (); | |
26836 | if (!out_file_str) | |
26837 | error (_("Can't open `%s' for writing"), filename_str.c_str ()); | |
26838 | gdb::unlinker unlink_file_str (filename_str.c_str ()); | |
26839 | gdb_file_up close_out_file_str (out_file_str); | |
26840 | ||
26841 | const size_t total_len | |
26842 | = write_debug_names (objfile, out_file, out_file_str); | |
26843 | assert_file_size (out_file, filename.c_str (), total_len); | |
26844 | ||
26845 | /* We want to keep the file .debug_str file too. */ | |
26846 | unlink_file_str.keep (); | |
26847 | } | |
26848 | else | |
26849 | { | |
26850 | const size_t total_len | |
26851 | = write_gdbindex (objfile, out_file); | |
26852 | assert_file_size (out_file, filename.c_str (), total_len); | |
26853 | } | |
26854 | ||
bef155c3 TT |
26855 | /* We want to keep the file. */ |
26856 | unlink_file.keep (); | |
9291a0cd TT |
26857 | } |
26858 | ||
90476074 TT |
26859 | /* Implementation of the `save gdb-index' command. |
26860 | ||
437afbb8 JK |
26861 | Note that the .gdb_index file format used by this command is |
26862 | documented in the GDB manual. Any changes here must be documented | |
26863 | there. */ | |
11570e71 | 26864 | |
9291a0cd | 26865 | static void |
8384c356 | 26866 | save_gdb_index_command (const char *arg, int from_tty) |
9291a0cd TT |
26867 | { |
26868 | struct objfile *objfile; | |
437afbb8 JK |
26869 | const char dwarf5space[] = "-dwarf-5 "; |
26870 | dw_index_kind index_kind = dw_index_kind::GDB_INDEX; | |
26871 | ||
26872 | if (!arg) | |
26873 | arg = ""; | |
26874 | ||
26875 | arg = skip_spaces (arg); | |
26876 | if (strncmp (arg, dwarf5space, strlen (dwarf5space)) == 0) | |
26877 | { | |
26878 | index_kind = dw_index_kind::DEBUG_NAMES; | |
26879 | arg += strlen (dwarf5space); | |
26880 | arg = skip_spaces (arg); | |
26881 | } | |
9291a0cd | 26882 | |
437afbb8 JK |
26883 | if (!*arg) |
26884 | error (_("usage: save gdb-index [-dwarf-5] DIRECTORY")); | |
9291a0cd TT |
26885 | |
26886 | ALL_OBJFILES (objfile) | |
26887 | { | |
26888 | struct stat st; | |
26889 | ||
26890 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 26891 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
26892 | continue; |
26893 | ||
9a3c8263 SM |
26894 | dwarf2_per_objfile |
26895 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
26896 | dwarf2_objfile_data_key); | |
9291a0cd TT |
26897 | if (dwarf2_per_objfile) |
26898 | { | |
9291a0cd | 26899 | |
492d29ea | 26900 | TRY |
9291a0cd | 26901 | { |
437afbb8 | 26902 | write_psymtabs_to_index (objfile, arg, index_kind); |
9291a0cd | 26903 | } |
492d29ea PA |
26904 | CATCH (except, RETURN_MASK_ERROR) |
26905 | { | |
26906 | exception_fprintf (gdb_stderr, except, | |
26907 | _("Error while writing index for `%s': "), | |
26908 | objfile_name (objfile)); | |
26909 | } | |
26910 | END_CATCH | |
9291a0cd TT |
26911 | } |
26912 | } | |
dce234bc PP |
26913 | } |
26914 | ||
9291a0cd TT |
26915 | \f |
26916 | ||
b4f54984 | 26917 | int dwarf_always_disassemble; |
9eae7c52 TT |
26918 | |
26919 | static void | |
b4f54984 DE |
26920 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
26921 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 26922 | { |
3e43a32a MS |
26923 | fprintf_filtered (file, |
26924 | _("Whether to always disassemble " | |
26925 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
26926 | value); |
26927 | } | |
26928 | ||
900e11f9 JK |
26929 | static void |
26930 | show_check_physname (struct ui_file *file, int from_tty, | |
26931 | struct cmd_list_element *c, const char *value) | |
26932 | { | |
26933 | fprintf_filtered (file, | |
26934 | _("Whether to check \"physname\" is %s.\n"), | |
26935 | value); | |
26936 | } | |
26937 | ||
6502dd73 DJ |
26938 | void |
26939 | _initialize_dwarf2_read (void) | |
26940 | { | |
96d19272 JK |
26941 | struct cmd_list_element *c; |
26942 | ||
dce234bc | 26943 | dwarf2_objfile_data_key |
c1bd65d0 | 26944 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 26945 | |
b4f54984 DE |
26946 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
26947 | Set DWARF specific variables.\n\ | |
26948 | Configure DWARF variables such as the cache size"), | |
26949 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
26950 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
26951 | ||
b4f54984 DE |
26952 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
26953 | Show DWARF specific variables\n\ | |
26954 | Show DWARF variables such as the cache size"), | |
26955 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
26956 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
26957 | ||
26958 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
26959 | &dwarf_max_cache_age, _("\ |
26960 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
26961 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
26962 | A higher limit means that cached compilation units will be stored\n\ |
26963 | in memory longer, and more total memory will be used. Zero disables\n\ | |
26964 | caching, which can slow down startup."), | |
2c5b56ce | 26965 | NULL, |
b4f54984 DE |
26966 | show_dwarf_max_cache_age, |
26967 | &set_dwarf_cmdlist, | |
26968 | &show_dwarf_cmdlist); | |
d97bc12b | 26969 | |
9eae7c52 | 26970 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 26971 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
26972 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
26973 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
26974 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
26975 | syntax. When disabled, expressions will be printed in a more\n\ | |
26976 | conversational style, when possible."), | |
26977 | NULL, | |
b4f54984 DE |
26978 | show_dwarf_always_disassemble, |
26979 | &set_dwarf_cmdlist, | |
26980 | &show_dwarf_cmdlist); | |
26981 | ||
26982 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
26983 | Set debugging of the DWARF reader."), _("\ | |
26984 | Show debugging of the DWARF reader."), _("\ | |
26985 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
26986 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
26987 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
26988 | NULL, |
26989 | NULL, | |
26990 | &setdebuglist, &showdebuglist); | |
26991 | ||
b4f54984 DE |
26992 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
26993 | Set debugging of the DWARF DIE reader."), _("\ | |
26994 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
26995 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
26996 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
26997 | NULL, |
26998 | NULL, | |
26999 | &setdebuglist, &showdebuglist); | |
9291a0cd | 27000 | |
27e0867f DE |
27001 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
27002 | Set debugging of the dwarf line reader."), _("\ | |
27003 | Show debugging of the dwarf line reader."), _("\ | |
27004 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
27005 | A value of 1 (one) provides basic information.\n\ | |
27006 | A value greater than 1 provides more verbose information."), | |
27007 | NULL, | |
27008 | NULL, | |
27009 | &setdebuglist, &showdebuglist); | |
27010 | ||
900e11f9 JK |
27011 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
27012 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
27013 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
27014 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
27015 | the demangler."), | |
27016 | NULL, show_check_physname, | |
27017 | &setdebuglist, &showdebuglist); | |
27018 | ||
e615022a DE |
27019 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
27020 | no_class, &use_deprecated_index_sections, _("\ | |
27021 | Set whether to use deprecated gdb_index sections."), _("\ | |
27022 | Show whether to use deprecated gdb_index sections."), _("\ | |
27023 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
27024 | Normally they are ignored either because of a missing feature or\n\ | |
27025 | performance issue.\n\ | |
27026 | Warning: This option must be enabled before gdb reads the file."), | |
27027 | NULL, | |
27028 | NULL, | |
27029 | &setlist, &showlist); | |
27030 | ||
96d19272 | 27031 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 27032 | _("\ |
fc1a9d6e | 27033 | Save a gdb-index file.\n\ |
437afbb8 JK |
27034 | Usage: save gdb-index [-dwarf-5] DIRECTORY\n\ |
27035 | \n\ | |
27036 | No options create one file with .gdb-index extension for pre-DWARF-5\n\ | |
27037 | compatible .gdb_index section. With -dwarf-5 creates two files with\n\ | |
27038 | extension .debug_names and .debug_str for DWARF-5 .debug_names section."), | |
96d19272 JK |
27039 | &save_cmdlist); |
27040 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
27041 | |
27042 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27043 | &dwarf2_locexpr_funcs); | |
27044 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27045 | &dwarf2_loclist_funcs); | |
27046 | ||
27047 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27048 | &dwarf2_block_frame_base_locexpr_funcs); | |
27049 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27050 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
27051 | |
27052 | #if GDB_SELF_TEST | |
27053 | selftests::register_test ("dw2_expand_symtabs_matching", | |
27054 | selftests::dw2_expand_symtabs_matching::run_test); | |
27055 | #endif | |
6502dd73 | 27056 | } |