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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
88987551 | 30 | #include "gdb_regex.h" |
c906108c SS |
31 | #include "expression.h" |
32 | #include "language.h" | |
33 | #include "demangle.h" | |
34 | #include "inferior.h" | |
0378c332 | 35 | #include "source.h" |
a7fdf62f | 36 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 37 | #include "objc-lang.h" |
6aecb9c2 | 38 | #include "d-lang.h" |
1f8173e6 | 39 | #include "ada-lang.h" |
a766d390 | 40 | #include "go-lang.h" |
cd6c7346 | 41 | #include "p-lang.h" |
ff013f42 | 42 | #include "addrmap.h" |
529480d0 | 43 | #include "cli/cli-utils.h" |
1ed9f74e | 44 | #include "cli/cli-style.h" |
50a5f187 | 45 | #include "cli/cli-cmds.h" |
cce0e923 | 46 | #include "fnmatch.h" |
2de7ced7 | 47 | #include "hashtab.h" |
12615cba | 48 | #include "typeprint.h" |
2de7ced7 | 49 | |
04ea0df1 | 50 | #include "gdb_obstack.h" |
fe898f56 | 51 | #include "block.h" |
de4f826b | 52 | #include "dictionary.h" |
c906108c SS |
53 | |
54 | #include <sys/types.h> | |
55 | #include <fcntl.h> | |
53ce3c39 | 56 | #include <sys/stat.h> |
c906108c | 57 | #include <ctype.h> |
015a42b4 | 58 | #include "cp-abi.h" |
71c25dea | 59 | #include "cp-support.h" |
76727919 | 60 | #include "observable.h" |
3a40aaa0 | 61 | #include "solist.h" |
9a044a89 TT |
62 | #include "macrotab.h" |
63 | #include "macroscope.h" | |
c906108c | 64 | |
270140bd | 65 | #include "parser-defs.h" |
ef0b411a | 66 | #include "completer.h" |
5ed8105e | 67 | #include "progspace-and-thread.h" |
268a13a5 | 68 | #include "gdbsupport/gdb_optional.h" |
bbf2f4df | 69 | #include "filename-seen-cache.h" |
46a62268 | 70 | #include "arch-utils.h" |
b9c04fb2 | 71 | #include <algorithm> |
7bb43059 | 72 | #include "gdbsupport/gdb_string_view.h" |
268a13a5 | 73 | #include "gdbsupport/pathstuff.h" |
1a6ff1a9 | 74 | #include "gdbsupport/common-utils.h" |
ccefe4c4 | 75 | |
ff6c39cf | 76 | /* Forward declarations for local functions. */ |
c906108c | 77 | |
0b39b52e | 78 | static void rbreak_command (const char *, int); |
c906108c | 79 | |
f8eba3c6 | 80 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 81 | |
d12307c1 PMR |
82 | static struct block_symbol |
83 | lookup_symbol_aux (const char *name, | |
de63c46b | 84 | symbol_name_match_type match_type, |
d12307c1 PMR |
85 | const struct block *block, |
86 | const domain_enum domain, | |
87 | enum language language, | |
88 | struct field_of_this_result *); | |
fba7f19c | 89 | |
e4051eeb | 90 | static |
d12307c1 | 91 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 92 | symbol_name_match_type match_type, |
d12307c1 PMR |
93 | const struct block *block, |
94 | const domain_enum domain, | |
95 | enum language language); | |
8155455b | 96 | |
d12307c1 | 97 | static struct block_symbol |
c32e6a04 CB |
98 | lookup_symbol_in_objfile (struct objfile *objfile, |
99 | enum block_enum block_index, | |
fe2a438d | 100 | const char *name, const domain_enum domain); |
c906108c | 101 | |
32ac0d11 TT |
102 | /* Type of the data stored on the program space. */ |
103 | ||
104 | struct main_info | |
105 | { | |
a32ad8c5 TT |
106 | main_info () = default; |
107 | ||
108 | ~main_info () | |
109 | { | |
110 | xfree (name_of_main); | |
111 | } | |
112 | ||
32ac0d11 TT |
113 | /* Name of "main". */ |
114 | ||
a32ad8c5 | 115 | char *name_of_main = nullptr; |
32ac0d11 TT |
116 | |
117 | /* Language of "main". */ | |
118 | ||
a32ad8c5 | 119 | enum language language_of_main = language_unknown; |
32ac0d11 TT |
120 | }; |
121 | ||
a32ad8c5 TT |
122 | /* Program space key for finding name and language of "main". */ |
123 | ||
124 | static const program_space_key<main_info> main_progspace_key; | |
125 | ||
f57d2163 DE |
126 | /* The default symbol cache size. |
127 | There is no extra cpu cost for large N (except when flushing the cache, | |
128 | which is rare). The value here is just a first attempt. A better default | |
129 | value may be higher or lower. A prime number can make up for a bad hash | |
130 | computation, so that's why the number is what it is. */ | |
131 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
132 | ||
133 | /* The maximum symbol cache size. | |
134 | There's no method to the decision of what value to use here, other than | |
135 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
136 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
137 | ||
138 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
139 | symbol in any objfile. */ | |
d12307c1 PMR |
140 | #define SYMBOL_LOOKUP_FAILED \ |
141 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
142 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
143 | |
144 | /* Recording lookups that don't find the symbol is just as important, if not | |
145 | more so, than recording found symbols. */ | |
146 | ||
147 | enum symbol_cache_slot_state | |
148 | { | |
149 | SYMBOL_SLOT_UNUSED, | |
150 | SYMBOL_SLOT_NOT_FOUND, | |
151 | SYMBOL_SLOT_FOUND | |
152 | }; | |
153 | ||
52059ffd TT |
154 | struct symbol_cache_slot |
155 | { | |
156 | enum symbol_cache_slot_state state; | |
157 | ||
158 | /* The objfile that was current when the symbol was looked up. | |
159 | This is only needed for global blocks, but for simplicity's sake | |
160 | we allocate the space for both. If data shows the extra space used | |
161 | for static blocks is a problem, we can split things up then. | |
162 | ||
163 | Global blocks need cache lookup to include the objfile context because | |
164 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
165 | which can traverse objfiles in, effectively, any order, depending on | |
166 | the current objfile, thus affecting which symbol is found. Normally, | |
167 | only the current objfile is searched first, and then the rest are | |
168 | searched in recorded order; but putting cache lookup inside | |
169 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
170 | Instead we just make the current objfile part of the context of | |
171 | cache lookup. This means we can record the same symbol multiple times, | |
172 | each with a different "current objfile" that was in effect when the | |
173 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
174 | const struct objfile *objfile_context; | |
175 | ||
176 | union | |
177 | { | |
d12307c1 | 178 | struct block_symbol found; |
52059ffd TT |
179 | struct |
180 | { | |
181 | char *name; | |
182 | domain_enum domain; | |
183 | } not_found; | |
184 | } value; | |
185 | }; | |
186 | ||
82f910ea PW |
187 | /* Clear out SLOT. */ |
188 | ||
189 | static void | |
190 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
191 | { | |
192 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
193 | xfree (slot->value.not_found.name); | |
194 | slot->state = SYMBOL_SLOT_UNUSED; | |
195 | } | |
196 | ||
f57d2163 DE |
197 | /* Symbols don't specify global vs static block. |
198 | So keep them in separate caches. */ | |
199 | ||
200 | struct block_symbol_cache | |
201 | { | |
202 | unsigned int hits; | |
203 | unsigned int misses; | |
204 | unsigned int collisions; | |
205 | ||
206 | /* SYMBOLS is a variable length array of this size. | |
207 | One can imagine that in general one cache (global/static) should be a | |
208 | fraction of the size of the other, but there's no data at the moment | |
209 | on which to decide. */ | |
210 | unsigned int size; | |
211 | ||
52059ffd | 212 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
213 | }; |
214 | ||
82f910ea PW |
215 | /* Clear all slots of BSC and free BSC. */ |
216 | ||
217 | static void | |
218 | destroy_block_symbol_cache (struct block_symbol_cache *bsc) | |
219 | { | |
220 | if (bsc != nullptr) | |
221 | { | |
222 | for (unsigned int i = 0; i < bsc->size; i++) | |
223 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
224 | xfree (bsc); | |
225 | } | |
226 | } | |
227 | ||
f57d2163 DE |
228 | /* The symbol cache. |
229 | ||
230 | Searching for symbols in the static and global blocks over multiple objfiles | |
231 | again and again can be slow, as can searching very big objfiles. This is a | |
232 | simple cache to improve symbol lookup performance, which is critical to | |
233 | overall gdb performance. | |
234 | ||
235 | Symbols are hashed on the name, its domain, and block. | |
236 | They are also hashed on their objfile for objfile-specific lookups. */ | |
237 | ||
238 | struct symbol_cache | |
239 | { | |
3017b94d TT |
240 | symbol_cache () = default; |
241 | ||
242 | ~symbol_cache () | |
243 | { | |
82f910ea PW |
244 | destroy_block_symbol_cache (global_symbols); |
245 | destroy_block_symbol_cache (static_symbols); | |
3017b94d TT |
246 | } |
247 | ||
248 | struct block_symbol_cache *global_symbols = nullptr; | |
249 | struct block_symbol_cache *static_symbols = nullptr; | |
f57d2163 DE |
250 | }; |
251 | ||
3017b94d TT |
252 | /* Program space key for finding its symbol cache. */ |
253 | ||
254 | static const program_space_key<symbol_cache> symbol_cache_key; | |
255 | ||
45cfd468 | 256 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 257 | unsigned int symtab_create_debug = 0; |
45cfd468 | 258 | |
cc485e62 DE |
259 | /* When non-zero, print debugging messages related to symbol lookup. */ |
260 | unsigned int symbol_lookup_debug = 0; | |
261 | ||
f57d2163 DE |
262 | /* The size of the cache is staged here. */ |
263 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
264 | ||
265 | /* The current value of the symbol cache size. | |
266 | This is saved so that if the user enters a value too big we can restore | |
267 | the original value from here. */ | |
268 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
269 | ||
491144b5 | 270 | /* True if a file may be known by two different basenames. |
c011a4f4 DE |
271 | This is the uncommon case, and significantly slows down gdb. |
272 | Default set to "off" to not slow down the common case. */ | |
491144b5 | 273 | bool basenames_may_differ = false; |
c011a4f4 | 274 | |
717d2f5a JB |
275 | /* Allow the user to configure the debugger behavior with respect |
276 | to multiple-choice menus when more than one symbol matches during | |
277 | a symbol lookup. */ | |
278 | ||
7fc830e2 MK |
279 | const char multiple_symbols_ask[] = "ask"; |
280 | const char multiple_symbols_all[] = "all"; | |
281 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 282 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
283 | { |
284 | multiple_symbols_ask, | |
285 | multiple_symbols_all, | |
286 | multiple_symbols_cancel, | |
287 | NULL | |
288 | }; | |
289 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
290 | ||
291 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
292 | ||
293 | const char * | |
294 | multiple_symbols_select_mode (void) | |
295 | { | |
296 | return multiple_symbols_mode; | |
297 | } | |
298 | ||
20c681d1 DE |
299 | /* Return the name of a domain_enum. */ |
300 | ||
301 | const char * | |
302 | domain_name (domain_enum e) | |
303 | { | |
304 | switch (e) | |
305 | { | |
306 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
307 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
308 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 309 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
310 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
311 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
312 | default: gdb_assert_not_reached ("bad domain_enum"); | |
313 | } | |
314 | } | |
315 | ||
316 | /* Return the name of a search_domain . */ | |
317 | ||
318 | const char * | |
319 | search_domain_name (enum search_domain e) | |
320 | { | |
321 | switch (e) | |
322 | { | |
323 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
324 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
325 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
59c35742 | 326 | case MODULES_DOMAIN: return "MODULES_DOMAIN"; |
20c681d1 DE |
327 | case ALL_DOMAIN: return "ALL_DOMAIN"; |
328 | default: gdb_assert_not_reached ("bad search_domain"); | |
329 | } | |
330 | } | |
331 | ||
43f3e411 | 332 | /* See symtab.h. */ |
db0fec5c | 333 | |
43f3e411 DE |
334 | struct symtab * |
335 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 336 | { |
43f3e411 | 337 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 338 | |
43f3e411 DE |
339 | /* The primary file symtab is the first one in the list. */ |
340 | return COMPUNIT_FILETABS (cust); | |
341 | } | |
342 | ||
343 | /* See symtab.h. */ | |
344 | ||
345 | enum language | |
346 | compunit_language (const struct compunit_symtab *cust) | |
347 | { | |
348 | struct symtab *symtab = compunit_primary_filetab (cust); | |
349 | ||
350 | /* The language of the compunit symtab is the language of its primary | |
351 | source file. */ | |
352 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
353 | } |
354 | ||
1ed9f74e PW |
355 | /* See symtab.h. */ |
356 | ||
357 | bool | |
358 | minimal_symbol::data_p () const | |
359 | { | |
360 | return type == mst_data | |
361 | || type == mst_bss | |
362 | || type == mst_abs | |
363 | || type == mst_file_data | |
364 | || type == mst_file_bss; | |
365 | } | |
366 | ||
367 | /* See symtab.h. */ | |
368 | ||
369 | bool | |
370 | minimal_symbol::text_p () const | |
371 | { | |
372 | return type == mst_text | |
373 | || type == mst_text_gnu_ifunc | |
374 | || type == mst_data_gnu_ifunc | |
375 | || type == mst_slot_got_plt | |
376 | || type == mst_solib_trampoline | |
377 | || type == mst_file_text; | |
378 | } | |
379 | ||
4aac40c8 TT |
380 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
381 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
382 | describes what we advertise). Returns true if they match, false |
383 | otherwise. */ | |
4aac40c8 | 384 | |
ececd218 | 385 | bool |
b57a636e | 386 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
387 | { |
388 | int len = strlen (filename); | |
b57a636e | 389 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
390 | |
391 | if (len < search_len) | |
ececd218 | 392 | return false; |
4aac40c8 TT |
393 | |
394 | /* The tail of FILENAME must match. */ | |
395 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
ececd218 | 396 | return false; |
4aac40c8 TT |
397 | |
398 | /* Either the names must completely match, or the character | |
399 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
400 | directory separator. |
401 | ||
af529f8f JK |
402 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
403 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
404 | absolute path. The sama applies for "c:\file.c" possibly | |
405 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
406 | ||
d84fca2c JK |
407 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
408 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
409 | to put the "c:file.c" name into debug info. Such compatibility | |
410 | works only on GDB built for DOS host. */ | |
4aac40c8 | 411 | return (len == search_len |
af529f8f JK |
412 | || (!IS_ABSOLUTE_PATH (search_name) |
413 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
414 | || (HAS_DRIVE_SPEC (filename) |
415 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
416 | } | |
417 | ||
cce0e923 DE |
418 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
419 | Heads up on the order of the arguments. They match the order of | |
420 | compare_filenames_for_search, but it's the opposite of the order of | |
421 | arguments to gdb_filename_fnmatch. */ | |
422 | ||
ececd218 | 423 | bool |
cce0e923 DE |
424 | compare_glob_filenames_for_search (const char *filename, |
425 | const char *search_name) | |
426 | { | |
427 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
428 | all /s have to be explicitly specified. */ | |
429 | int file_path_elements = count_path_elements (filename); | |
430 | int search_path_elements = count_path_elements (search_name); | |
431 | ||
432 | if (search_path_elements > file_path_elements) | |
ececd218 | 433 | return false; |
cce0e923 DE |
434 | |
435 | if (IS_ABSOLUTE_PATH (search_name)) | |
436 | { | |
437 | return (search_path_elements == file_path_elements | |
438 | && gdb_filename_fnmatch (search_name, filename, | |
439 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
440 | } | |
441 | ||
442 | { | |
443 | const char *file_to_compare | |
444 | = strip_leading_path_elements (filename, | |
445 | file_path_elements - search_path_elements); | |
446 | ||
447 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
448 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
449 | } | |
450 | } | |
451 | ||
f8eba3c6 TT |
452 | /* Check for a symtab of a specific name by searching some symtabs. |
453 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 454 | |
b2d23133 DE |
455 | If NAME is not absolute, then REAL_PATH is NULL |
456 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
457 | ||
14bc53a8 PA |
458 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
459 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 460 | |
43f3e411 DE |
461 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
462 | Each symtab within the specified compunit symtab is also searched. | |
463 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
464 | search until the end of the list. */ |
465 | ||
14bc53a8 | 466 | bool |
f8eba3c6 | 467 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 468 | const char *real_path, |
43f3e411 | 469 | struct compunit_symtab *first, |
14bc53a8 PA |
470 | struct compunit_symtab *after_last, |
471 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 472 | { |
43f3e411 | 473 | struct compunit_symtab *cust; |
c011a4f4 | 474 | const char* base_name = lbasename (name); |
1f84b619 | 475 | |
43f3e411 | 476 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 477 | { |
5accd1a0 | 478 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 479 | { |
43f3e411 DE |
480 | if (compare_filenames_for_search (s->filename, name)) |
481 | { | |
14bc53a8 PA |
482 | if (callback (s)) |
483 | return true; | |
43f3e411 DE |
484 | continue; |
485 | } | |
a94e8645 | 486 | |
43f3e411 DE |
487 | /* Before we invoke realpath, which can get expensive when many |
488 | files are involved, do a quick comparison of the basenames. */ | |
489 | if (! basenames_may_differ | |
490 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
491 | continue; | |
a94e8645 | 492 | |
43f3e411 | 493 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 494 | { |
14bc53a8 PA |
495 | if (callback (s)) |
496 | return true; | |
a94e8645 DE |
497 | continue; |
498 | } | |
43f3e411 DE |
499 | |
500 | /* If the user gave us an absolute path, try to find the file in | |
501 | this symtab and use its absolute path. */ | |
502 | if (real_path != NULL) | |
503 | { | |
504 | const char *fullname = symtab_to_fullname (s); | |
505 | ||
506 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
507 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7e785608 TV |
508 | gdb::unique_xmalloc_ptr<char> fullname_real_path |
509 | = gdb_realpath (fullname); | |
510 | fullname = fullname_real_path.get (); | |
43f3e411 DE |
511 | if (FILENAME_CMP (real_path, fullname) == 0) |
512 | { | |
14bc53a8 PA |
513 | if (callback (s)) |
514 | return true; | |
43f3e411 DE |
515 | continue; |
516 | } | |
517 | } | |
a94e8645 | 518 | } |
f8eba3c6 | 519 | } |
58d370e0 | 520 | |
14bc53a8 | 521 | return false; |
f8eba3c6 TT |
522 | } |
523 | ||
524 | /* Check for a symtab of a specific name; first in symtabs, then in | |
525 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
526 | in the symtab filename will also work. | |
527 | ||
14bc53a8 PA |
528 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
529 | true, the search stops. */ | |
f8eba3c6 TT |
530 | |
531 | void | |
532 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 533 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 534 | { |
14bc53a8 | 535 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
536 | |
537 | /* Here we are interested in canonicalizing an absolute path, not | |
538 | absolutizing a relative path. */ | |
539 | if (IS_ABSOLUTE_PATH (name)) | |
540 | { | |
14278e1f | 541 | real_path = gdb_realpath (name); |
14bc53a8 | 542 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
543 | } |
544 | ||
2030c079 | 545 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
546 | { |
547 | if (iterate_over_some_symtabs (name, real_path.get (), | |
548 | objfile->compunit_symtabs, NULL, | |
549 | callback)) | |
f8eba3c6 | 550 | return; |
14bc53a8 | 551 | } |
f8eba3c6 | 552 | |
c906108c SS |
553 | /* Same search rules as above apply here, but now we look thru the |
554 | psymtabs. */ | |
555 | ||
2030c079 | 556 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
557 | { |
558 | if (objfile->sf | |
559 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
560 | name, | |
561 | real_path.get (), | |
562 | callback)) | |
f8eba3c6 | 563 | return; |
14bc53a8 | 564 | } |
c906108c | 565 | } |
f8eba3c6 TT |
566 | |
567 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
568 | symtab, or NULL. */ | |
569 | ||
570 | struct symtab * | |
571 | lookup_symtab (const char *name) | |
572 | { | |
573 | struct symtab *result = NULL; | |
574 | ||
14bc53a8 PA |
575 | iterate_over_symtabs (name, [&] (symtab *symtab) |
576 | { | |
577 | result = symtab; | |
578 | return true; | |
579 | }); | |
580 | ||
f8eba3c6 TT |
581 | return result; |
582 | } | |
583 | ||
c906108c SS |
584 | \f |
585 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
586 | full method name, which consist of the class name (from T), the unadorned | |
587 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 588 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
589 | |
590 | char * | |
fba45db2 | 591 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
592 | { |
593 | int mangled_name_len; | |
594 | char *mangled_name; | |
595 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
596 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 597 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 598 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
7d93a1e0 | 599 | const char *newname = type->name (); |
c906108c SS |
600 | |
601 | /* Does the form of physname indicate that it is the full mangled name | |
602 | of a constructor (not just the args)? */ | |
603 | int is_full_physname_constructor; | |
604 | ||
605 | int is_constructor; | |
015a42b4 | 606 | int is_destructor = is_destructor_name (physname); |
c906108c | 607 | /* Need a new type prefix. */ |
e6a959d6 PA |
608 | const char *const_prefix = method->is_const ? "C" : ""; |
609 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
610 | char buf[20]; |
611 | int len = (newname == NULL ? 0 : strlen (newname)); | |
612 | ||
43630227 PS |
613 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
614 | or an operator name. */ | |
615 | if ((physname[0] == '_' && physname[1] == 'Z') | |
616 | || is_operator_name (field_name)) | |
235d1e03 EZ |
617 | return xstrdup (physname); |
618 | ||
015a42b4 | 619 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 620 | |
3e43a32a MS |
621 | is_constructor = is_full_physname_constructor |
622 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
623 | |
624 | if (!is_destructor) | |
61012eef | 625 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
626 | |
627 | if (is_destructor || is_full_physname_constructor) | |
628 | { | |
c5aa993b JM |
629 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
630 | strcpy (mangled_name, physname); | |
c906108c SS |
631 | return mangled_name; |
632 | } | |
633 | ||
634 | if (len == 0) | |
635 | { | |
8c042590 | 636 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
637 | } |
638 | else if (physname[0] == 't' || physname[0] == 'Q') | |
639 | { | |
640 | /* The physname for template and qualified methods already includes | |
dda83cd7 | 641 | the class name. */ |
8c042590 | 642 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
643 | newname = NULL; |
644 | len = 0; | |
645 | } | |
646 | else | |
647 | { | |
8c042590 PM |
648 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
649 | volatile_prefix, len); | |
c906108c SS |
650 | } |
651 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 652 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 653 | |
433759f7 MS |
654 | mangled_name = (char *) xmalloc (mangled_name_len); |
655 | if (is_constructor) | |
656 | mangled_name[0] = '\0'; | |
657 | else | |
658 | strcpy (mangled_name, field_name); | |
659 | ||
c906108c SS |
660 | strcat (mangled_name, buf); |
661 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
662 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 663 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
664 | if (newname != NULL) |
665 | strcat (mangled_name, newname); | |
666 | ||
667 | strcat (mangled_name, physname); | |
668 | return (mangled_name); | |
669 | } | |
12af6855 | 670 | |
ff985671 | 671 | /* See symtab.h. */ |
eca864fe | 672 | |
b250c185 | 673 | void |
ff985671 TT |
674 | general_symbol_info::set_demangled_name (const char *name, |
675 | struct obstack *obstack) | |
b250c185 | 676 | { |
ff985671 | 677 | if (language () == language_ada) |
f85f34ed TT |
678 | { |
679 | if (name == NULL) | |
680 | { | |
ff985671 TT |
681 | ada_mangled = 0; |
682 | language_specific.obstack = obstack; | |
f85f34ed TT |
683 | } |
684 | else | |
685 | { | |
ff985671 TT |
686 | ada_mangled = 1; |
687 | language_specific.demangled_name = name; | |
f85f34ed TT |
688 | } |
689 | } | |
29df156d | 690 | else |
ff985671 | 691 | language_specific.demangled_name = name; |
b250c185 SW |
692 | } |
693 | ||
12af6855 | 694 | \f |
89aad1f9 | 695 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 696 | depending upon the language for the symbol. */ |
eca864fe | 697 | |
89aad1f9 | 698 | void |
d3ecddab CB |
699 | general_symbol_info::set_language (enum language language, |
700 | struct obstack *obstack) | |
89aad1f9 | 701 | { |
d3ecddab | 702 | m_language = language; |
c1b5c1eb CB |
703 | if (language == language_cplus |
704 | || language == language_d | |
705 | || language == language_go | |
706 | || language == language_objc | |
707 | || language == language_fortran) | |
89aad1f9 | 708 | { |
ff985671 | 709 | set_demangled_name (NULL, obstack); |
f85f34ed | 710 | } |
c1b5c1eb | 711 | else if (language == language_ada) |
f85f34ed | 712 | { |
d3ecddab CB |
713 | gdb_assert (ada_mangled == 0); |
714 | language_specific.obstack = obstack; | |
89aad1f9 | 715 | } |
89aad1f9 EZ |
716 | else |
717 | { | |
d3ecddab | 718 | memset (&language_specific, 0, sizeof (language_specific)); |
89aad1f9 EZ |
719 | } |
720 | } | |
721 | ||
2de7ced7 DJ |
722 | /* Functions to initialize a symbol's mangled name. */ |
723 | ||
04a679b8 TT |
724 | /* Objects of this type are stored in the demangled name hash table. */ |
725 | struct demangled_name_entry | |
726 | { | |
3a494279 CB |
727 | demangled_name_entry (gdb::string_view mangled_name) |
728 | : mangled (mangled_name) {} | |
729 | ||
7bb43059 | 730 | gdb::string_view mangled; |
403772ef | 731 | enum language language; |
5396ae17 | 732 | gdb::unique_xmalloc_ptr<char> demangled; |
04a679b8 TT |
733 | }; |
734 | ||
735 | /* Hash function for the demangled name hash. */ | |
eca864fe | 736 | |
04a679b8 TT |
737 | static hashval_t |
738 | hash_demangled_name_entry (const void *data) | |
739 | { | |
19ba03f4 SM |
740 | const struct demangled_name_entry *e |
741 | = (const struct demangled_name_entry *) data; | |
433759f7 | 742 | |
1a6ff1a9 | 743 | return fast_hash (e->mangled.data (), e->mangled.length ()); |
04a679b8 TT |
744 | } |
745 | ||
746 | /* Equality function for the demangled name hash. */ | |
eca864fe | 747 | |
04a679b8 TT |
748 | static int |
749 | eq_demangled_name_entry (const void *a, const void *b) | |
750 | { | |
19ba03f4 SM |
751 | const struct demangled_name_entry *da |
752 | = (const struct demangled_name_entry *) a; | |
753 | const struct demangled_name_entry *db | |
754 | = (const struct demangled_name_entry *) b; | |
433759f7 | 755 | |
7bb43059 | 756 | return da->mangled == db->mangled; |
04a679b8 TT |
757 | } |
758 | ||
3a494279 CB |
759 | static void |
760 | free_demangled_name_entry (void *data) | |
761 | { | |
762 | struct demangled_name_entry *e | |
763 | = (struct demangled_name_entry *) data; | |
764 | ||
765 | e->~demangled_name_entry(); | |
766 | } | |
767 | ||
2de7ced7 DJ |
768 | /* Create the hash table used for demangled names. Each hash entry is |
769 | a pair of strings; one for the mangled name and one for the demangled | |
770 | name. The entry is hashed via just the mangled name. */ | |
771 | ||
772 | static void | |
0f14768a | 773 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
774 | { |
775 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 776 | The hash table code will round this up to the next prime number. |
2de7ced7 | 777 | Choosing a much larger table size wastes memory, and saves only about |
f8bab2d6 CB |
778 | 1% in symbol reading. However, if the minsym count is already |
779 | initialized (e.g. because symbol name setting was deferred to | |
780 | a background thread) we can initialize the hashtable with a count | |
781 | based on that, because we will almost certainly have at least that | |
782 | many entries. If we have a nonzero number but less than 256, | |
783 | we still stay with 256 to have some space for psymbols, etc. */ | |
784 | ||
785 | /* htab will expand the table when it is 3/4th full, so we account for that | |
786 | here. +2 to round up. */ | |
787 | int minsym_based_count = (per_bfd->minimal_symbol_count + 2) / 3 * 4; | |
788 | int count = std::max (per_bfd->minimal_symbol_count, minsym_based_count); | |
2de7ced7 | 789 | |
db92718b | 790 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
f8bab2d6 | 791 | (count, hash_demangled_name_entry, eq_demangled_name_entry, |
3a494279 | 792 | free_demangled_name_entry, xcalloc, xfree)); |
2de7ced7 | 793 | } |
12af6855 | 794 | |
d55c9a68 | 795 | /* See symtab.h */ |
12af6855 | 796 | |
d55c9a68 | 797 | char * |
2de7ced7 DJ |
798 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, |
799 | const char *mangled) | |
12af6855 | 800 | { |
12af6855 | 801 | char *demangled = NULL; |
8b302db8 | 802 | int i; |
12af6855 | 803 | |
c1b5c1eb CB |
804 | if (gsymbol->language () == language_unknown) |
805 | gsymbol->m_language = language_auto; | |
1bae87b9 | 806 | |
c1b5c1eb | 807 | if (gsymbol->language () != language_auto) |
1bae87b9 | 808 | { |
c1b5c1eb | 809 | const struct language_defn *lang = language_def (gsymbol->language ()); |
8b302db8 | 810 | |
6f827019 | 811 | lang->sniff_from_mangled_name (mangled, &demangled); |
8b302db8 | 812 | return demangled; |
6aecb9c2 | 813 | } |
8b302db8 TT |
814 | |
815 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 816 | { |
8b302db8 TT |
817 | enum language l = (enum language) i; |
818 | const struct language_defn *lang = language_def (l); | |
819 | ||
6f827019 | 820 | if (lang->sniff_from_mangled_name (mangled, &demangled)) |
a766d390 | 821 | { |
c1b5c1eb | 822 | gsymbol->m_language = l; |
a766d390 DE |
823 | return demangled; |
824 | } | |
825 | } | |
826 | ||
2de7ced7 DJ |
827 | return NULL; |
828 | } | |
829 | ||
980cae7a | 830 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
831 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
832 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
833 | NUL-terminated, then this function assumes that NAME is already | |
834 | correctly saved (either permanently or with a lifetime tied to the | |
835 | objfile), and it will not be copied. | |
836 | ||
837 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 838 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 839 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
840 | |
841 | void | |
4d4eaa30 CB |
842 | general_symbol_info::compute_and_set_names (gdb::string_view linkage_name, |
843 | bool copy_name, | |
844 | objfile_per_bfd_storage *per_bfd, | |
845 | gdb::optional<hashval_t> hash) | |
2de7ced7 | 846 | { |
04a679b8 | 847 | struct demangled_name_entry **slot; |
2de7ced7 | 848 | |
4d4eaa30 | 849 | if (language () == language_ada) |
b06ead72 JB |
850 | { |
851 | /* In Ada, we do the symbol lookups using the mangled name, so | |
dda83cd7 | 852 | we can save some space by not storing the demangled name. */ |
92174eea | 853 | if (!copy_name) |
4d4eaa30 | 854 | m_name = linkage_name.data (); |
04a679b8 | 855 | else |
869d8950 TT |
856 | m_name = obstack_strndup (&per_bfd->storage_obstack, |
857 | linkage_name.data (), | |
858 | linkage_name.length ()); | |
ff985671 | 859 | set_demangled_name (NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
860 | |
861 | return; | |
862 | } | |
863 | ||
84a1243b | 864 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 865 | create_demangled_names_hash (per_bfd); |
04a679b8 | 866 | |
31edb802 | 867 | struct demangled_name_entry entry (linkage_name); |
e76b2246 CB |
868 | if (!hash.has_value ()) |
869 | hash = hash_demangled_name_entry (&entry); | |
04a679b8 | 870 | slot = ((struct demangled_name_entry **) |
dda83cd7 | 871 | htab_find_slot_with_hash (per_bfd->demangled_names_hash.get (), |
e76b2246 | 872 | &entry, *hash, INSERT)); |
2de7ced7 | 873 | |
57d75002 CB |
874 | /* The const_cast is safe because the only reason it is already |
875 | initialized is if we purposefully set it from a background | |
876 | thread to avoid doing the work here. However, it is still | |
877 | allocated from the heap and needs to be freed by us, just | |
878 | like if we called symbol_find_demangled_name here. If this is | |
879 | nullptr, we call symbol_find_demangled_name below, but we put | |
880 | this smart pointer here to be sure that we don't leak this name. */ | |
881 | gdb::unique_xmalloc_ptr<char> demangled_name | |
882 | (const_cast<char *> (language_specific.demangled_name)); | |
883 | ||
2de7ced7 | 884 | /* If this name is not in the hash table, add it. */ |
a766d390 DE |
885 | if (*slot == NULL |
886 | /* A C version of the symbol may have already snuck into the table. | |
887 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
4d4eaa30 | 888 | || (language () == language_go && (*slot)->demangled == nullptr)) |
2de7ced7 | 889 | { |
0c921b21 | 890 | /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME |
dda83cd7 SM |
891 | to true if the string might not be nullterminated. We have to make |
892 | this copy because demangling needs a nullterminated string. */ | |
31edb802 | 893 | gdb::string_view linkage_name_copy; |
0c921b21 CB |
894 | if (copy_name) |
895 | { | |
31edb802 CB |
896 | char *alloc_name = (char *) alloca (linkage_name.length () + 1); |
897 | memcpy (alloc_name, linkage_name.data (), linkage_name.length ()); | |
898 | alloc_name[linkage_name.length ()] = '\0'; | |
0c921b21 | 899 | |
31edb802 CB |
900 | linkage_name_copy = gdb::string_view (alloc_name, |
901 | linkage_name.length ()); | |
0c921b21 CB |
902 | } |
903 | else | |
904 | linkage_name_copy = linkage_name; | |
905 | ||
57d75002 CB |
906 | if (demangled_name.get () == nullptr) |
907 | demangled_name.reset | |
908 | (symbol_find_demangled_name (this, linkage_name_copy.data ())); | |
2de7ced7 | 909 | |
04a679b8 | 910 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 911 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
912 | mangled name saved, and we don't have a demangled name. So, |
913 | you might think we could save a little space by not recording | |
914 | this in the hash table at all. | |
5396ae17 | 915 | |
04a679b8 TT |
916 | It turns out that it is actually important to still save such |
917 | an entry in the hash table, because storing this name gives | |
705b5767 | 918 | us better bcache hit rates for partial symbols. */ |
0c921b21 | 919 | if (!copy_name) |
04a679b8 | 920 | { |
224c3ddb SM |
921 | *slot |
922 | = ((struct demangled_name_entry *) | |
923 | obstack_alloc (&per_bfd->storage_obstack, | |
5396ae17 | 924 | sizeof (demangled_name_entry))); |
31edb802 | 925 | new (*slot) demangled_name_entry (linkage_name); |
04a679b8 TT |
926 | } |
927 | else | |
928 | { | |
929 | /* If we must copy the mangled name, put it directly after | |
5396ae17 | 930 | the struct so we can have a single allocation. */ |
224c3ddb SM |
931 | *slot |
932 | = ((struct demangled_name_entry *) | |
933 | obstack_alloc (&per_bfd->storage_obstack, | |
31edb802 CB |
934 | sizeof (demangled_name_entry) |
935 | + linkage_name.length () + 1)); | |
5396ae17 | 936 | char *mangled_ptr = reinterpret_cast<char *> (*slot + 1); |
31edb802 CB |
937 | memcpy (mangled_ptr, linkage_name.data (), linkage_name.length ()); |
938 | mangled_ptr [linkage_name.length ()] = '\0'; | |
3a494279 | 939 | new (*slot) demangled_name_entry |
31edb802 | 940 | (gdb::string_view (mangled_ptr, linkage_name.length ())); |
04a679b8 | 941 | } |
d55c9a68 | 942 | (*slot)->demangled = std::move (demangled_name); |
4d4eaa30 | 943 | (*slot)->language = language (); |
2de7ced7 | 944 | } |
4d4eaa30 CB |
945 | else if (language () == language_unknown || language () == language_auto) |
946 | m_language = (*slot)->language; | |
2de7ced7 | 947 | |
4d4eaa30 | 948 | m_name = (*slot)->mangled.data (); |
ff985671 | 949 | set_demangled_name ((*slot)->demangled.get (), &per_bfd->storage_obstack); |
2de7ced7 DJ |
950 | } |
951 | ||
c9d95fa3 | 952 | /* See symtab.h. */ |
22abf04a | 953 | |
0d5cff50 | 954 | const char * |
c9d95fa3 | 955 | general_symbol_info::natural_name () const |
22abf04a | 956 | { |
c1b5c1eb | 957 | switch (language ()) |
22abf04a | 958 | { |
1f8173e6 | 959 | case language_cplus: |
6aecb9c2 | 960 | case language_d: |
a766d390 | 961 | case language_go: |
1f8173e6 | 962 | case language_objc: |
f55ee35c | 963 | case language_fortran: |
8c87a452 | 964 | case language_rust: |
7151c1af TT |
965 | if (language_specific.demangled_name != nullptr) |
966 | return language_specific.demangled_name; | |
1f8173e6 PH |
967 | break; |
968 | case language_ada: | |
c9d95fa3 | 969 | return ada_decode_symbol (this); |
1f8173e6 PH |
970 | default: |
971 | break; | |
22abf04a | 972 | } |
4d4eaa30 | 973 | return linkage_name (); |
22abf04a DC |
974 | } |
975 | ||
c9d95fa3 | 976 | /* See symtab.h. */ |
eca864fe | 977 | |
0d5cff50 | 978 | const char * |
c9d95fa3 | 979 | general_symbol_info::demangled_name () const |
9cc0d196 | 980 | { |
c6e5ee5e SDJ |
981 | const char *dem_name = NULL; |
982 | ||
c1b5c1eb | 983 | switch (language ()) |
1f8173e6 PH |
984 | { |
985 | case language_cplus: | |
6aecb9c2 | 986 | case language_d: |
a766d390 | 987 | case language_go: |
1f8173e6 | 988 | case language_objc: |
f55ee35c | 989 | case language_fortran: |
8c87a452 | 990 | case language_rust: |
7151c1af | 991 | dem_name = language_specific.demangled_name; |
1f8173e6 PH |
992 | break; |
993 | case language_ada: | |
c9d95fa3 | 994 | dem_name = ada_decode_symbol (this); |
1f8173e6 PH |
995 | break; |
996 | default: | |
997 | break; | |
998 | } | |
c6e5ee5e | 999 | return dem_name; |
9cc0d196 | 1000 | } |
fe39c653 | 1001 | |
c9d95fa3 | 1002 | /* See symtab.h. */ |
eca864fe | 1003 | |
0d5cff50 | 1004 | const char * |
c9d95fa3 | 1005 | general_symbol_info::search_name () const |
fc062ac6 | 1006 | { |
c1b5c1eb | 1007 | if (language () == language_ada) |
4d4eaa30 | 1008 | return linkage_name (); |
1f8173e6 | 1009 | else |
c9d95fa3 | 1010 | return natural_name (); |
4725b721 | 1011 | } |
b5ec771e PA |
1012 | |
1013 | /* See symtab.h. */ | |
1014 | ||
ebbc3a7d AB |
1015 | struct obj_section * |
1016 | general_symbol_info::obj_section (const struct objfile *objfile) const | |
1017 | { | |
1018 | if (section >= 0) | |
1019 | return &objfile->sections[section]; | |
1020 | return nullptr; | |
1021 | } | |
1022 | ||
1023 | /* See symtab.h. */ | |
1024 | ||
b5ec771e PA |
1025 | bool |
1026 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
1027 | const lookup_name_info &name) | |
1028 | { | |
1029 | symbol_name_matcher_ftype *name_match | |
c9debfb9 | 1030 | = language_def (gsymbol->language ())->get_symbol_name_matcher (name); |
c9d95fa3 | 1031 | return name_match (gsymbol->search_name (), name, NULL); |
b5ec771e PA |
1032 | } |
1033 | ||
c906108c SS |
1034 | \f |
1035 | ||
ececd218 | 1036 | /* Return true if the two sections are the same, or if they could |
94277a38 DJ |
1037 | plausibly be copies of each other, one in an original object |
1038 | file and another in a separated debug file. */ | |
1039 | ||
ececd218 | 1040 | bool |
714835d5 UW |
1041 | matching_obj_sections (struct obj_section *obj_first, |
1042 | struct obj_section *obj_second) | |
94277a38 | 1043 | { |
714835d5 UW |
1044 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1045 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1046 | |
1047 | /* If they're the same section, then they match. */ | |
1048 | if (first == second) | |
ececd218 | 1049 | return true; |
94277a38 DJ |
1050 | |
1051 | /* If either is NULL, give up. */ | |
1052 | if (first == NULL || second == NULL) | |
ececd218 | 1053 | return false; |
94277a38 DJ |
1054 | |
1055 | /* This doesn't apply to absolute symbols. */ | |
1056 | if (first->owner == NULL || second->owner == NULL) | |
ececd218 | 1057 | return false; |
94277a38 DJ |
1058 | |
1059 | /* If they're in the same object file, they must be different sections. */ | |
1060 | if (first->owner == second->owner) | |
ececd218 | 1061 | return false; |
94277a38 DJ |
1062 | |
1063 | /* Check whether the two sections are potentially corresponding. They must | |
1064 | have the same size, address, and name. We can't compare section indexes, | |
1065 | which would be more reliable, because some sections may have been | |
1066 | stripped. */ | |
fd361982 | 1067 | if (bfd_section_size (first) != bfd_section_size (second)) |
ececd218 | 1068 | return false; |
94277a38 | 1069 | |
818f79f6 | 1070 | /* In-memory addresses may start at a different offset, relativize them. */ |
fd361982 AM |
1071 | if (bfd_section_vma (first) - bfd_get_start_address (first->owner) |
1072 | != bfd_section_vma (second) - bfd_get_start_address (second->owner)) | |
ececd218 | 1073 | return false; |
94277a38 | 1074 | |
fd361982 AM |
1075 | if (bfd_section_name (first) == NULL |
1076 | || bfd_section_name (second) == NULL | |
1077 | || strcmp (bfd_section_name (first), bfd_section_name (second)) != 0) | |
ececd218 | 1078 | return false; |
94277a38 DJ |
1079 | |
1080 | /* Otherwise check that they are in corresponding objfiles. */ | |
1081 | ||
9d7c67bf | 1082 | struct objfile *obj = NULL; |
2030c079 | 1083 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1084 | if (objfile->obfd == first->owner) |
1085 | { | |
1086 | obj = objfile; | |
1087 | break; | |
1088 | } | |
94277a38 DJ |
1089 | gdb_assert (obj != NULL); |
1090 | ||
1091 | if (obj->separate_debug_objfile != NULL | |
1092 | && obj->separate_debug_objfile->obfd == second->owner) | |
ececd218 | 1093 | return true; |
94277a38 DJ |
1094 | if (obj->separate_debug_objfile_backlink != NULL |
1095 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
ececd218 | 1096 | return true; |
94277a38 | 1097 | |
ececd218 | 1098 | return false; |
94277a38 | 1099 | } |
c5aa993b | 1100 | |
2097ae25 DE |
1101 | /* See symtab.h. */ |
1102 | ||
1103 | void | |
1104 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1105 | { |
77e371c0 | 1106 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1107 | |
1108 | /* If we know that this is not a text address, return failure. This is | |
1109 | necessary because we loop based on texthigh and textlow, which do | |
1110 | not include the data ranges. */ | |
77e371c0 | 1111 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1112 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1113 | return; |
c906108c | 1114 | |
2030c079 | 1115 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1116 | { |
1117 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1118 | |
aed57c53 TT |
1119 | if (objfile->sf) |
1120 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1121 | pc, section, 0); | |
1122 | if (cust) | |
1123 | return; | |
1124 | } | |
c906108c | 1125 | } |
c906108c | 1126 | \f |
f57d2163 DE |
1127 | /* Hash function for the symbol cache. */ |
1128 | ||
1129 | static unsigned int | |
1130 | hash_symbol_entry (const struct objfile *objfile_context, | |
1131 | const char *name, domain_enum domain) | |
1132 | { | |
1133 | unsigned int hash = (uintptr_t) objfile_context; | |
1134 | ||
1135 | if (name != NULL) | |
1136 | hash += htab_hash_string (name); | |
1137 | ||
2c26b84f DE |
1138 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1139 | to map to the same slot. */ | |
1140 | if (domain == STRUCT_DOMAIN) | |
1141 | hash += VAR_DOMAIN * 7; | |
1142 | else | |
1143 | hash += domain * 7; | |
f57d2163 DE |
1144 | |
1145 | return hash; | |
1146 | } | |
1147 | ||
1148 | /* Equality function for the symbol cache. */ | |
1149 | ||
1150 | static int | |
1151 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1152 | const struct objfile *objfile_context, | |
1153 | const char *name, domain_enum domain) | |
1154 | { | |
1155 | const char *slot_name; | |
1156 | domain_enum slot_domain; | |
1157 | ||
1158 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1159 | return 0; | |
1160 | ||
1161 | if (slot->objfile_context != objfile_context) | |
1162 | return 0; | |
1163 | ||
1164 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1165 | { | |
1166 | slot_name = slot->value.not_found.name; | |
1167 | slot_domain = slot->value.not_found.domain; | |
1168 | } | |
1169 | else | |
1170 | { | |
987012b8 | 1171 | slot_name = slot->value.found.symbol->search_name (); |
d12307c1 | 1172 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); |
f57d2163 DE |
1173 | } |
1174 | ||
1175 | /* NULL names match. */ | |
1176 | if (slot_name == NULL && name == NULL) | |
1177 | { | |
1178 | /* But there's no point in calling symbol_matches_domain in the | |
1179 | SYMBOL_SLOT_FOUND case. */ | |
1180 | if (slot_domain != domain) | |
1181 | return 0; | |
1182 | } | |
1183 | else if (slot_name != NULL && name != NULL) | |
1184 | { | |
b5ec771e PA |
1185 | /* It's important that we use the same comparison that was done |
1186 | the first time through. If the slot records a found symbol, | |
1187 | then this means using the symbol name comparison function of | |
987012b8 | 1188 | the symbol's language with symbol->search_name (). See |
b5ec771e PA |
1189 | dictionary.c. It also means using symbol_matches_domain for |
1190 | found symbols. See block.c. | |
f57d2163 DE |
1191 | |
1192 | If the slot records a not-found symbol, then require a precise match. | |
1193 | We could still be lax with whitespace like strcmp_iw though. */ | |
1194 | ||
1195 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1196 | { | |
1197 | if (strcmp (slot_name, name) != 0) | |
1198 | return 0; | |
1199 | if (slot_domain != domain) | |
1200 | return 0; | |
1201 | } | |
1202 | else | |
1203 | { | |
d12307c1 | 1204 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1205 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1206 | |
b5ec771e | 1207 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1208 | return 0; |
b5ec771e | 1209 | |
c1b5c1eb | 1210 | if (!symbol_matches_domain (sym->language (), slot_domain, domain)) |
f57d2163 DE |
1211 | return 0; |
1212 | } | |
1213 | } | |
1214 | else | |
1215 | { | |
1216 | /* Only one name is NULL. */ | |
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | return 1; | |
1221 | } | |
1222 | ||
1223 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1224 | length array) in bytes. */ | |
1225 | ||
1226 | static size_t | |
1227 | symbol_cache_byte_size (unsigned int size) | |
1228 | { | |
1229 | return (sizeof (struct block_symbol_cache) | |
1230 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1231 | } | |
1232 | ||
1233 | /* Resize CACHE. */ | |
1234 | ||
1235 | static void | |
1236 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1237 | { | |
1238 | /* If there's no change in size, don't do anything. | |
1239 | All caches have the same size, so we can just compare with the size | |
1240 | of the global symbols cache. */ | |
1241 | if ((cache->global_symbols != NULL | |
1242 | && cache->global_symbols->size == new_size) | |
1243 | || (cache->global_symbols == NULL | |
1244 | && new_size == 0)) | |
1245 | return; | |
1246 | ||
82f910ea PW |
1247 | destroy_block_symbol_cache (cache->global_symbols); |
1248 | destroy_block_symbol_cache (cache->static_symbols); | |
f57d2163 DE |
1249 | |
1250 | if (new_size == 0) | |
1251 | { | |
1252 | cache->global_symbols = NULL; | |
1253 | cache->static_symbols = NULL; | |
1254 | } | |
1255 | else | |
1256 | { | |
1257 | size_t total_size = symbol_cache_byte_size (new_size); | |
1258 | ||
224c3ddb SM |
1259 | cache->global_symbols |
1260 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1261 | cache->static_symbols | |
1262 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1263 | cache->global_symbols->size = new_size; |
1264 | cache->static_symbols->size = new_size; | |
1265 | } | |
1266 | } | |
1267 | ||
f57d2163 DE |
1268 | /* Return the symbol cache of PSPACE. |
1269 | Create one if it doesn't exist yet. */ | |
1270 | ||
1271 | static struct symbol_cache * | |
1272 | get_symbol_cache (struct program_space *pspace) | |
1273 | { | |
3017b94d | 1274 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1275 | |
1276 | if (cache == NULL) | |
1277 | { | |
3017b94d TT |
1278 | cache = symbol_cache_key.emplace (pspace); |
1279 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1280 | } |
1281 | ||
1282 | return cache; | |
1283 | } | |
1284 | ||
f57d2163 DE |
1285 | /* Set the size of the symbol cache in all program spaces. */ |
1286 | ||
1287 | static void | |
1288 | set_symbol_cache_size (unsigned int new_size) | |
1289 | { | |
94c93c35 | 1290 | for (struct program_space *pspace : program_spaces) |
f57d2163 | 1291 | { |
3017b94d | 1292 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1293 | |
1294 | /* The pspace could have been created but not have a cache yet. */ | |
1295 | if (cache != NULL) | |
1296 | resize_symbol_cache (cache, new_size); | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | /* Called when symbol-cache-size is set. */ | |
1301 | ||
1302 | static void | |
eb4c3f4a | 1303 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1304 | struct cmd_list_element *c) |
1305 | { | |
1306 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1307 | { | |
1308 | /* Restore the previous value. | |
1309 | This is the value the "show" command prints. */ | |
1310 | new_symbol_cache_size = symbol_cache_size; | |
1311 | ||
1312 | error (_("Symbol cache size is too large, max is %u."), | |
1313 | MAX_SYMBOL_CACHE_SIZE); | |
1314 | } | |
1315 | symbol_cache_size = new_symbol_cache_size; | |
1316 | ||
1317 | set_symbol_cache_size (symbol_cache_size); | |
1318 | } | |
1319 | ||
1320 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1321 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1322 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1323 | failed (and thus this one will too), or NULL if the symbol is not present | |
1324 | in the cache. | |
d0509ba4 CB |
1325 | *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which |
1326 | can be used to save the result of a full lookup attempt. */ | |
f57d2163 | 1327 | |
d12307c1 | 1328 | static struct block_symbol |
f57d2163 | 1329 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1330 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1331 | const char *name, domain_enum domain, |
1332 | struct block_symbol_cache **bsc_ptr, | |
1333 | struct symbol_cache_slot **slot_ptr) | |
1334 | { | |
1335 | struct block_symbol_cache *bsc; | |
1336 | unsigned int hash; | |
1337 | struct symbol_cache_slot *slot; | |
1338 | ||
1339 | if (block == GLOBAL_BLOCK) | |
1340 | bsc = cache->global_symbols; | |
1341 | else | |
1342 | bsc = cache->static_symbols; | |
1343 | if (bsc == NULL) | |
1344 | { | |
1345 | *bsc_ptr = NULL; | |
1346 | *slot_ptr = NULL; | |
6640a367 | 1347 | return {}; |
f57d2163 DE |
1348 | } |
1349 | ||
1350 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1351 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 | 1352 | |
d0509ba4 CB |
1353 | *bsc_ptr = bsc; |
1354 | *slot_ptr = slot; | |
1355 | ||
f57d2163 DE |
1356 | if (eq_symbol_entry (slot, objfile_context, name, domain)) |
1357 | { | |
1358 | if (symbol_lookup_debug) | |
1359 | fprintf_unfiltered (gdb_stdlog, | |
1360 | "%s block symbol cache hit%s for %s, %s\n", | |
1361 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1362 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1363 | ? " (not found)" : "", | |
1364 | name, domain_name (domain)); | |
1365 | ++bsc->hits; | |
1366 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1367 | return SYMBOL_LOOKUP_FAILED; | |
1368 | return slot->value.found; | |
1369 | } | |
1370 | ||
2c26b84f DE |
1371 | /* Symbol is not present in the cache. */ |
1372 | ||
f57d2163 DE |
1373 | if (symbol_lookup_debug) |
1374 | { | |
1375 | fprintf_unfiltered (gdb_stdlog, | |
1376 | "%s block symbol cache miss for %s, %s\n", | |
1377 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1378 | name, domain_name (domain)); | |
1379 | } | |
1380 | ++bsc->misses; | |
6640a367 | 1381 | return {}; |
f57d2163 DE |
1382 | } |
1383 | ||
f57d2163 DE |
1384 | /* Mark SYMBOL as found in SLOT. |
1385 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1386 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1387 | necessarily the objfile the symbol was found in. */ | |
1388 | ||
1389 | static void | |
1390 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1391 | struct symbol_cache_slot *slot, | |
1392 | struct objfile *objfile_context, | |
d12307c1 PMR |
1393 | struct symbol *symbol, |
1394 | const struct block *block) | |
f57d2163 DE |
1395 | { |
1396 | if (bsc == NULL) | |
1397 | return; | |
1398 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1399 | { | |
1400 | ++bsc->collisions; | |
1401 | symbol_cache_clear_slot (slot); | |
1402 | } | |
1403 | slot->state = SYMBOL_SLOT_FOUND; | |
1404 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1405 | slot->value.found.symbol = symbol; |
1406 | slot->value.found.block = block; | |
f57d2163 DE |
1407 | } |
1408 | ||
1409 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1410 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1411 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1412 | ||
1413 | static void | |
1414 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1415 | struct symbol_cache_slot *slot, | |
1416 | struct objfile *objfile_context, | |
1417 | const char *name, domain_enum domain) | |
1418 | { | |
1419 | if (bsc == NULL) | |
1420 | return; | |
1421 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1422 | { | |
1423 | ++bsc->collisions; | |
1424 | symbol_cache_clear_slot (slot); | |
1425 | } | |
1426 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1427 | slot->objfile_context = objfile_context; | |
1428 | slot->value.not_found.name = xstrdup (name); | |
1429 | slot->value.not_found.domain = domain; | |
1430 | } | |
1431 | ||
1432 | /* Flush the symbol cache of PSPACE. */ | |
1433 | ||
1434 | static void | |
1435 | symbol_cache_flush (struct program_space *pspace) | |
1436 | { | |
3017b94d | 1437 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1438 | int pass; |
f57d2163 DE |
1439 | |
1440 | if (cache == NULL) | |
1441 | return; | |
1442 | if (cache->global_symbols == NULL) | |
1443 | { | |
1444 | gdb_assert (symbol_cache_size == 0); | |
1445 | gdb_assert (cache->static_symbols == NULL); | |
1446 | return; | |
1447 | } | |
1448 | ||
1449 | /* If the cache is untouched since the last flush, early exit. | |
1450 | This is important for performance during the startup of a program linked | |
1451 | with 100s (or 1000s) of shared libraries. */ | |
1452 | if (cache->global_symbols->misses == 0 | |
1453 | && cache->static_symbols->misses == 0) | |
1454 | return; | |
1455 | ||
1456 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1457 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1458 | ||
1459 | for (pass = 0; pass < 2; ++pass) | |
1460 | { | |
1461 | struct block_symbol_cache *bsc | |
1462 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1463 | unsigned int i; | |
1464 | ||
1465 | for (i = 0; i < bsc->size; ++i) | |
1466 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1467 | } | |
1468 | ||
1469 | cache->global_symbols->hits = 0; | |
1470 | cache->global_symbols->misses = 0; | |
1471 | cache->global_symbols->collisions = 0; | |
1472 | cache->static_symbols->hits = 0; | |
1473 | cache->static_symbols->misses = 0; | |
1474 | cache->static_symbols->collisions = 0; | |
1475 | } | |
1476 | ||
1477 | /* Dump CACHE. */ | |
1478 | ||
1479 | static void | |
1480 | symbol_cache_dump (const struct symbol_cache *cache) | |
1481 | { | |
1482 | int pass; | |
1483 | ||
1484 | if (cache->global_symbols == NULL) | |
1485 | { | |
1486 | printf_filtered (" <disabled>\n"); | |
1487 | return; | |
1488 | } | |
1489 | ||
1490 | for (pass = 0; pass < 2; ++pass) | |
1491 | { | |
1492 | const struct block_symbol_cache *bsc | |
1493 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1494 | unsigned int i; | |
1495 | ||
1496 | if (pass == 0) | |
1497 | printf_filtered ("Global symbols:\n"); | |
1498 | else | |
1499 | printf_filtered ("Static symbols:\n"); | |
1500 | ||
1501 | for (i = 0; i < bsc->size; ++i) | |
1502 | { | |
1503 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1504 | ||
1505 | QUIT; | |
1506 | ||
1507 | switch (slot->state) | |
1508 | { | |
1509 | case SYMBOL_SLOT_UNUSED: | |
1510 | break; | |
1511 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1512 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1513 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1514 | slot->value.not_found.name, |
1515 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1516 | break; |
1517 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1518 | { |
1519 | struct symbol *found = slot->value.found.symbol; | |
1520 | const struct objfile *context = slot->objfile_context; | |
1521 | ||
1522 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1523 | host_address_to_string (context), | |
987012b8 | 1524 | found->print_name (), |
d12307c1 PMR |
1525 | domain_name (SYMBOL_DOMAIN (found))); |
1526 | break; | |
1527 | } | |
f57d2163 DE |
1528 | } |
1529 | } | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | /* The "mt print symbol-cache" command. */ | |
1534 | ||
1535 | static void | |
510e5e56 | 1536 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 | 1537 | { |
94c93c35 | 1538 | for (struct program_space *pspace : program_spaces) |
f57d2163 DE |
1539 | { |
1540 | struct symbol_cache *cache; | |
1541 | ||
1542 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1543 | pspace->num, | |
1544 | pspace->symfile_object_file != NULL | |
1545 | ? objfile_name (pspace->symfile_object_file) | |
1546 | : "(no object file)"); | |
1547 | ||
1548 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1549 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1550 | if (cache == NULL) |
1551 | printf_filtered (" <empty>\n"); | |
1552 | else | |
1553 | symbol_cache_dump (cache); | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | /* The "mt flush-symbol-cache" command. */ | |
1558 | ||
1559 | static void | |
510e5e56 | 1560 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 | 1561 | { |
94c93c35 | 1562 | for (struct program_space *pspace : program_spaces) |
f57d2163 DE |
1563 | { |
1564 | symbol_cache_flush (pspace); | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | /* Print usage statistics of CACHE. */ | |
1569 | ||
1570 | static void | |
1571 | symbol_cache_stats (struct symbol_cache *cache) | |
1572 | { | |
1573 | int pass; | |
1574 | ||
1575 | if (cache->global_symbols == NULL) | |
1576 | { | |
1577 | printf_filtered (" <disabled>\n"); | |
1578 | return; | |
1579 | } | |
1580 | ||
1581 | for (pass = 0; pass < 2; ++pass) | |
1582 | { | |
1583 | const struct block_symbol_cache *bsc | |
1584 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1585 | ||
1586 | QUIT; | |
1587 | ||
1588 | if (pass == 0) | |
1589 | printf_filtered ("Global block cache stats:\n"); | |
1590 | else | |
1591 | printf_filtered ("Static block cache stats:\n"); | |
1592 | ||
1593 | printf_filtered (" size: %u\n", bsc->size); | |
1594 | printf_filtered (" hits: %u\n", bsc->hits); | |
1595 | printf_filtered (" misses: %u\n", bsc->misses); | |
1596 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1597 | } | |
1598 | } | |
1599 | ||
1600 | /* The "mt print symbol-cache-statistics" command. */ | |
1601 | ||
1602 | static void | |
510e5e56 | 1603 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 | 1604 | { |
94c93c35 | 1605 | for (struct program_space *pspace : program_spaces) |
f57d2163 DE |
1606 | { |
1607 | struct symbol_cache *cache; | |
1608 | ||
1609 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1610 | pspace->num, | |
1611 | pspace->symfile_object_file != NULL | |
1612 | ? objfile_name (pspace->symfile_object_file) | |
1613 | : "(no object file)"); | |
1614 | ||
1615 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1616 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1617 | if (cache == NULL) |
1618 | printf_filtered (" empty, no stats available\n"); | |
1619 | else | |
1620 | symbol_cache_stats (cache); | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | /* This module's 'new_objfile' observer. */ | |
1625 | ||
1626 | static void | |
1627 | symtab_new_objfile_observer (struct objfile *objfile) | |
1628 | { | |
1629 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1630 | symbol_cache_flush (current_program_space); | |
1631 | } | |
1632 | ||
1633 | /* This module's 'free_objfile' observer. */ | |
1634 | ||
1635 | static void | |
1636 | symtab_free_objfile_observer (struct objfile *objfile) | |
1637 | { | |
1638 | symbol_cache_flush (objfile->pspace); | |
1639 | } | |
1640 | \f | |
c906108c SS |
1641 | /* Debug symbols usually don't have section information. We need to dig that |
1642 | out of the minimal symbols and stash that in the debug symbol. */ | |
1643 | ||
ccefe4c4 | 1644 | void |
907fc202 UW |
1645 | fixup_section (struct general_symbol_info *ginfo, |
1646 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1647 | { |
1648 | struct minimal_symbol *msym; | |
c906108c | 1649 | |
bccdca4a UW |
1650 | /* First, check whether a minimal symbol with the same name exists |
1651 | and points to the same address. The address check is required | |
1652 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1653 | point to the function descriptor, while the debug symbol will | |
1654 | point to the actual function code. */ | |
4d4eaa30 CB |
1655 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->linkage_name (), |
1656 | objfile); | |
907fc202 | 1657 | if (msym) |
efd66ac6 | 1658 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1659 | else |
19e2d14b KB |
1660 | { |
1661 | /* Static, function-local variables do appear in the linker | |
1662 | (minimal) symbols, but are frequently given names that won't | |
1663 | be found via lookup_minimal_symbol(). E.g., it has been | |
1664 | observed in frv-uclinux (ELF) executables that a static, | |
1665 | function-local variable named "foo" might appear in the | |
1666 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1667 | point in attempting to extend the lookup-by-name mechanism to | |
1668 | handle this case due to the fact that there can be multiple | |
1669 | names. | |
9af17804 | 1670 | |
19e2d14b KB |
1671 | So, instead, search the section table when lookup by name has |
1672 | failed. The ``addr'' and ``endaddr'' fields may have already | |
6a053cb1 TT |
1673 | been relocated. If so, the relocation offset needs to be |
1674 | subtracted from these values when performing the comparison. | |
1675 | We unconditionally subtract it, because, when no relocation | |
1676 | has been performed, the value will simply be zero. | |
9af17804 | 1677 | |
19e2d14b KB |
1678 | The address of the symbol whose section we're fixing up HAS |
1679 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1680 | the section isn't yet known and knowing the section is | |
1681 | necessary in order to add the correct relocation value. In | |
1682 | other words, we wouldn't even be in this function (attempting | |
1683 | to compute the section) if it were already known. | |
1684 | ||
1685 | Note that it is possible to search the minimal symbols | |
1686 | (subtracting the relocation value if necessary) to find the | |
1687 | matching minimal symbol, but this is overkill and much less | |
1688 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1689 | symbol, only its section. |
1690 | ||
19e2d14b KB |
1691 | Note that this technique (of doing a section table search) |
1692 | can fail when unrelocated section addresses overlap. For | |
1693 | this reason, we still attempt a lookup by name prior to doing | |
1694 | a search of the section table. */ | |
9af17804 | 1695 | |
19e2d14b | 1696 | struct obj_section *s; |
e27d198c | 1697 | int fallback = -1; |
433759f7 | 1698 | |
19e2d14b KB |
1699 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1700 | { | |
65cf3563 | 1701 | int idx = s - objfile->sections; |
6a053cb1 | 1702 | CORE_ADDR offset = objfile->section_offsets[idx]; |
19e2d14b | 1703 | |
e27d198c TT |
1704 | if (fallback == -1) |
1705 | fallback = idx; | |
1706 | ||
f1f6aadf PA |
1707 | if (obj_section_addr (s) - offset <= addr |
1708 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1709 | { |
19e2d14b KB |
1710 | ginfo->section = idx; |
1711 | return; | |
1712 | } | |
1713 | } | |
e27d198c TT |
1714 | |
1715 | /* If we didn't find the section, assume it is in the first | |
1716 | section. If there is no allocated section, then it hardly | |
1717 | matters what we pick, so just pick zero. */ | |
1718 | if (fallback == -1) | |
1719 | ginfo->section = 0; | |
1720 | else | |
1721 | ginfo->section = fallback; | |
19e2d14b | 1722 | } |
c906108c SS |
1723 | } |
1724 | ||
1725 | struct symbol * | |
fba45db2 | 1726 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1727 | { |
907fc202 UW |
1728 | CORE_ADDR addr; |
1729 | ||
c906108c SS |
1730 | if (!sym) |
1731 | return NULL; | |
1732 | ||
1994afbf DE |
1733 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1734 | return sym; | |
1735 | ||
907fc202 UW |
1736 | /* We either have an OBJFILE, or we can get at it from the sym's |
1737 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1738 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1739 | |
1740 | if (objfile == NULL) | |
08be3fe3 | 1741 | objfile = symbol_objfile (sym); |
907fc202 | 1742 | |
ebbc3a7d | 1743 | if (sym->obj_section (objfile) != nullptr) |
e27d198c TT |
1744 | return sym; |
1745 | ||
907fc202 UW |
1746 | /* We should have an objfile by now. */ |
1747 | gdb_assert (objfile); | |
1748 | ||
1749 | switch (SYMBOL_CLASS (sym)) | |
1750 | { | |
1751 | case LOC_STATIC: | |
1752 | case LOC_LABEL: | |
907fc202 UW |
1753 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1754 | break; | |
1755 | case LOC_BLOCK: | |
2b1ffcfd | 1756 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1757 | break; |
1758 | ||
1759 | default: | |
1760 | /* Nothing else will be listed in the minsyms -- no use looking | |
1761 | it up. */ | |
1762 | return sym; | |
1763 | } | |
1764 | ||
468c0cbb | 1765 | fixup_section (sym, addr, objfile); |
c906108c SS |
1766 | |
1767 | return sym; | |
1768 | } | |
1769 | ||
b5ec771e PA |
1770 | /* See symtab.h. */ |
1771 | ||
1772 | demangle_for_lookup_info::demangle_for_lookup_info | |
1773 | (const lookup_name_info &lookup_name, language lang) | |
1774 | { | |
1775 | demangle_result_storage storage; | |
1776 | ||
c62446b1 PA |
1777 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1778 | { | |
1779 | gdb::unique_xmalloc_ptr<char> without_params | |
e0802d59 | 1780 | = cp_remove_params_if_any (lookup_name.c_str (), |
c62446b1 PA |
1781 | lookup_name.completion_mode ()); |
1782 | ||
1783 | if (without_params != NULL) | |
1784 | { | |
de63c46b PA |
1785 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1786 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1787 | lang, storage); | |
c62446b1 PA |
1788 | return; |
1789 | } | |
1790 | } | |
1791 | ||
de63c46b | 1792 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
e0802d59 | 1793 | m_demangled_name = lookup_name.c_str (); |
de63c46b | 1794 | else |
e0802d59 | 1795 | m_demangled_name = demangle_for_lookup (lookup_name.c_str (), |
de63c46b | 1796 | lang, storage); |
b5ec771e PA |
1797 | } |
1798 | ||
1799 | /* See symtab.h. */ | |
1800 | ||
1801 | const lookup_name_info & | |
1802 | lookup_name_info::match_any () | |
1803 | { | |
1804 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1805 | symbol names. */ | |
e0802d59 | 1806 | static const lookup_name_info lookup_name ("", symbol_name_match_type::FULL, |
b5ec771e PA |
1807 | true); |
1808 | ||
1809 | return lookup_name; | |
1810 | } | |
1811 | ||
f8eba3c6 | 1812 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1813 | lookup functions. The result can either be the input NAME |
1814 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1815 | |
2f408ecb | 1816 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1817 | Normally, Ada symbol lookups are performed using the encoded name |
1818 | rather than the demangled name, and so it might seem to make sense | |
1819 | for this function to return an encoded version of NAME. | |
1820 | Unfortunately, we cannot do this, because this function is used in | |
1821 | circumstances where it is not appropriate to try to encode NAME. | |
1822 | For instance, when displaying the frame info, we demangle the name | |
1823 | of each parameter, and then perform a symbol lookup inside our | |
1824 | function using that demangled name. In Ada, certain functions | |
1825 | have internally-generated parameters whose name contain uppercase | |
1826 | characters. Encoding those name would result in those uppercase | |
1827 | characters to become lowercase, and thus cause the symbol lookup | |
1828 | to fail. */ | |
c906108c | 1829 | |
2f408ecb | 1830 | const char * |
f8eba3c6 | 1831 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1832 | demangle_result_storage &storage) |
c906108c | 1833 | { |
9c37b5ae | 1834 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1835 | lookup, so we can always binary search. */ |
53c5240f | 1836 | if (lang == language_cplus) |
729051e6 | 1837 | { |
2f408ecb PA |
1838 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1839 | if (demangled_name != NULL) | |
1840 | return storage.set_malloc_ptr (demangled_name); | |
1841 | ||
1842 | /* If we were given a non-mangled name, canonicalize it | |
1843 | according to the language (so far only for C++). */ | |
596dc4ad TT |
1844 | gdb::unique_xmalloc_ptr<char> canon = cp_canonicalize_string (name); |
1845 | if (canon != nullptr) | |
1846 | return storage.set_malloc_ptr (std::move (canon)); | |
729051e6 | 1847 | } |
6aecb9c2 JB |
1848 | else if (lang == language_d) |
1849 | { | |
2f408ecb PA |
1850 | char *demangled_name = d_demangle (name, 0); |
1851 | if (demangled_name != NULL) | |
1852 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1853 | } |
a766d390 DE |
1854 | else if (lang == language_go) |
1855 | { | |
82fc57fd AB |
1856 | char *demangled_name |
1857 | = language_def (language_go)->demangle_symbol (name, 0); | |
2f408ecb PA |
1858 | if (demangled_name != NULL) |
1859 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1860 | } |
729051e6 | 1861 | |
2f408ecb | 1862 | return name; |
f8eba3c6 TT |
1863 | } |
1864 | ||
5ffa0793 PA |
1865 | /* See symtab.h. */ |
1866 | ||
1867 | unsigned int | |
1868 | search_name_hash (enum language language, const char *search_name) | |
1869 | { | |
fb8006fd | 1870 | return language_def (language)->search_name_hash (search_name); |
5ffa0793 PA |
1871 | } |
1872 | ||
cf901d3b | 1873 | /* See symtab.h. |
f8eba3c6 | 1874 | |
cf901d3b | 1875 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1876 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1877 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1878 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1879 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1880 | that there is C++ code below which can error(), but that probably |
1881 | doesn't affect these calls since they are looking for a known | |
1882 | variable and thus can probably assume it will never hit the C++ | |
1883 | code). */ | |
1884 | ||
d12307c1 | 1885 | struct block_symbol |
f8eba3c6 TT |
1886 | lookup_symbol_in_language (const char *name, const struct block *block, |
1887 | const domain_enum domain, enum language lang, | |
1993b719 | 1888 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1889 | { |
2f408ecb PA |
1890 | demangle_result_storage storage; |
1891 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1892 | |
de63c46b PA |
1893 | return lookup_symbol_aux (modified_name, |
1894 | symbol_name_match_type::FULL, | |
1895 | block, domain, lang, | |
2f408ecb | 1896 | is_a_field_of_this); |
fba7f19c EZ |
1897 | } |
1898 | ||
cf901d3b | 1899 | /* See symtab.h. */ |
53c5240f | 1900 | |
d12307c1 | 1901 | struct block_symbol |
53c5240f | 1902 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1903 | domain_enum domain, |
1904 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1905 | { |
1906 | return lookup_symbol_in_language (name, block, domain, | |
1907 | current_language->la_language, | |
2570f2b7 | 1908 | is_a_field_of_this); |
53c5240f PA |
1909 | } |
1910 | ||
cf901d3b | 1911 | /* See symtab.h. */ |
66a17cb6 | 1912 | |
de63c46b PA |
1913 | struct block_symbol |
1914 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1915 | domain_enum domain) | |
1916 | { | |
1917 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1918 | block, domain, language_asm, NULL); | |
1919 | } | |
1920 | ||
1921 | /* See symtab.h. */ | |
1922 | ||
d12307c1 | 1923 | struct block_symbol |
66a17cb6 TT |
1924 | lookup_language_this (const struct language_defn *lang, |
1925 | const struct block *block) | |
1926 | { | |
5bae7c4e | 1927 | if (lang->name_of_this () == NULL || block == NULL) |
6640a367 | 1928 | return {}; |
66a17cb6 | 1929 | |
cc485e62 DE |
1930 | if (symbol_lookup_debug > 1) |
1931 | { | |
d6bc0792 | 1932 | struct objfile *objfile = block_objfile (block); |
cc485e62 DE |
1933 | |
1934 | fprintf_unfiltered (gdb_stdlog, | |
1935 | "lookup_language_this (%s, %s (objfile %s))", | |
6f7664a9 | 1936 | lang->name (), host_address_to_string (block), |
cc485e62 DE |
1937 | objfile_debug_name (objfile)); |
1938 | } | |
1939 | ||
03de6823 | 1940 | while (block) |
66a17cb6 TT |
1941 | { |
1942 | struct symbol *sym; | |
1943 | ||
5bae7c4e | 1944 | sym = block_lookup_symbol (block, lang->name_of_this (), |
de63c46b PA |
1945 | symbol_name_match_type::SEARCH_NAME, |
1946 | VAR_DOMAIN); | |
66a17cb6 | 1947 | if (sym != NULL) |
f149aabd | 1948 | { |
cc485e62 DE |
1949 | if (symbol_lookup_debug > 1) |
1950 | { | |
1951 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
987012b8 | 1952 | sym->print_name (), |
cc485e62 DE |
1953 | host_address_to_string (sym), |
1954 | host_address_to_string (block)); | |
1955 | } | |
d12307c1 | 1956 | return (struct block_symbol) {sym, block}; |
f149aabd | 1957 | } |
66a17cb6 | 1958 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1959 | break; |
66a17cb6 TT |
1960 | block = BLOCK_SUPERBLOCK (block); |
1961 | } | |
03de6823 | 1962 | |
cc485e62 DE |
1963 | if (symbol_lookup_debug > 1) |
1964 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1965 | return {}; |
66a17cb6 TT |
1966 | } |
1967 | ||
2dc3df72 TT |
1968 | /* Given TYPE, a structure/union, |
1969 | return 1 if the component named NAME from the ultimate target | |
1970 | structure/union is defined, otherwise, return 0. */ | |
1971 | ||
1972 | static int | |
1993b719 TT |
1973 | check_field (struct type *type, const char *name, |
1974 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1975 | { |
1976 | int i; | |
1977 | ||
1978 | /* The type may be a stub. */ | |
f168693b | 1979 | type = check_typedef (type); |
2dc3df72 | 1980 | |
1f704f76 | 1981 | for (i = type->num_fields () - 1; i >= TYPE_N_BASECLASSES (type); i--) |
2dc3df72 TT |
1982 | { |
1983 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1984 | ||
1985 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1986 | { |
1987 | is_a_field_of_this->type = type; | |
ceacbf6e | 1988 | is_a_field_of_this->field = &type->field (i); |
1993b719 TT |
1989 | return 1; |
1990 | } | |
2dc3df72 TT |
1991 | } |
1992 | ||
1993 | /* C++: If it was not found as a data field, then try to return it | |
1994 | as a pointer to a method. */ | |
1995 | ||
1996 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1997 | { | |
1998 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1999 | { |
2000 | is_a_field_of_this->type = type; | |
2001 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
2002 | return 1; | |
2003 | } | |
2dc3df72 TT |
2004 | } |
2005 | ||
2006 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 2007 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2008 | return 1; |
2009 | ||
2010 | return 0; | |
2011 | } | |
2012 | ||
53c5240f | 2013 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2014 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2015 | |
d12307c1 | 2016 | static struct block_symbol |
de63c46b PA |
2017 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2018 | const struct block *block, | |
94af9270 | 2019 | const domain_enum domain, enum language language, |
1993b719 | 2020 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2021 | { |
d12307c1 | 2022 | struct block_symbol result; |
53c5240f | 2023 | const struct language_defn *langdef; |
406bc4de | 2024 | |
cc485e62 DE |
2025 | if (symbol_lookup_debug) |
2026 | { | |
d6bc0792 TT |
2027 | struct objfile *objfile = (block == nullptr |
2028 | ? nullptr : block_objfile (block)); | |
cc485e62 DE |
2029 | |
2030 | fprintf_unfiltered (gdb_stdlog, | |
2031 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2032 | name, host_address_to_string (block), | |
2033 | objfile != NULL | |
2034 | ? objfile_debug_name (objfile) : "NULL", | |
2035 | domain_name (domain), language_str (language)); | |
2036 | } | |
2037 | ||
9a146a11 EZ |
2038 | /* Make sure we do something sensible with is_a_field_of_this, since |
2039 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2040 | certainly use it later. If we don't set it, the contents of |
2041 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2042 | if (is_a_field_of_this != NULL) |
1993b719 | 2043 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2044 | |
e4051eeb DC |
2045 | /* Search specified block and its superiors. Don't search |
2046 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2047 | |
de63c46b | 2048 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2049 | if (result.symbol != NULL) |
cc485e62 DE |
2050 | { |
2051 | if (symbol_lookup_debug) | |
2052 | { | |
2053 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2054 | host_address_to_string (result.symbol)); |
cc485e62 | 2055 | } |
d12307c1 | 2056 | return result; |
cc485e62 | 2057 | } |
c906108c | 2058 | |
53c5240f | 2059 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2060 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2061 | |
2062 | langdef = language_def (language); | |
5f9a71c3 | 2063 | |
6592e36f TT |
2064 | /* Don't do this check if we are searching for a struct. It will |
2065 | not be found by check_field, but will be found by other | |
2066 | means. */ | |
2067 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2068 | { |
d12307c1 | 2069 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2070 | |
d12307c1 | 2071 | if (result.symbol) |
c906108c | 2072 | { |
d12307c1 | 2073 | struct type *t = result.symbol->type; |
9af17804 | 2074 | |
2b2d9e11 VP |
2075 | /* I'm not really sure that type of this can ever |
2076 | be typedefed; just be safe. */ | |
f168693b | 2077 | t = check_typedef (t); |
78134374 | 2078 | if (t->code () == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2079 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2080 | |
78134374 SM |
2081 | if (t->code () != TYPE_CODE_STRUCT |
2082 | && t->code () != TYPE_CODE_UNION) | |
9af17804 | 2083 | error (_("Internal error: `%s' is not an aggregate"), |
5bae7c4e | 2084 | langdef->name_of_this ()); |
9af17804 | 2085 | |
1993b719 | 2086 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2087 | { |
2088 | if (symbol_lookup_debug) | |
2089 | { | |
2090 | fprintf_unfiltered (gdb_stdlog, | |
2091 | "lookup_symbol_aux (...) = NULL\n"); | |
2092 | } | |
6640a367 | 2093 | return {}; |
cc485e62 | 2094 | } |
c906108c SS |
2095 | } |
2096 | } | |
2097 | ||
53c5240f | 2098 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2099 | up static and global variables. */ |
c906108c | 2100 | |
a78a19b1 | 2101 | result = langdef->lookup_symbol_nonlocal (name, block, domain); |
d12307c1 | 2102 | if (result.symbol != NULL) |
cc485e62 DE |
2103 | { |
2104 | if (symbol_lookup_debug) | |
2105 | { | |
2106 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2107 | host_address_to_string (result.symbol)); |
cc485e62 | 2108 | } |
d12307c1 | 2109 | return result; |
cc485e62 | 2110 | } |
c906108c | 2111 | |
774b6a14 TT |
2112 | /* Now search all static file-level symbols. Not strictly correct, |
2113 | but more useful than an error. */ | |
41f62f39 | 2114 | |
d12307c1 | 2115 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2116 | if (symbol_lookup_debug) |
2117 | { | |
2118 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2119 | result.symbol != NULL |
2120 | ? host_address_to_string (result.symbol) | |
2121 | : "NULL"); | |
cc485e62 | 2122 | } |
d12307c1 | 2123 | return result; |
41f62f39 JK |
2124 | } |
2125 | ||
e4051eeb | 2126 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2127 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2128 | |
d12307c1 | 2129 | static struct block_symbol |
de63c46b PA |
2130 | lookup_local_symbol (const char *name, |
2131 | symbol_name_match_type match_type, | |
2132 | const struct block *block, | |
74016e12 DE |
2133 | const domain_enum domain, |
2134 | enum language language) | |
8155455b DC |
2135 | { |
2136 | struct symbol *sym; | |
89a9d1b1 | 2137 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2138 | const char *scope = block_scope (block); |
2139 | ||
e4051eeb DC |
2140 | /* Check if either no block is specified or it's a global block. */ |
2141 | ||
89a9d1b1 | 2142 | if (static_block == NULL) |
6640a367 | 2143 | return {}; |
e4051eeb | 2144 | |
89a9d1b1 | 2145 | while (block != static_block) |
f61e8913 | 2146 | { |
de63c46b | 2147 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2148 | if (sym != NULL) |
d12307c1 | 2149 | return (struct block_symbol) {sym, block}; |
edb3359d | 2150 | |
f55ee35c | 2151 | if (language == language_cplus || language == language_fortran) |
dda83cd7 SM |
2152 | { |
2153 | struct block_symbol blocksym | |
d12307c1 PMR |
2154 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2155 | domain); | |
2156 | ||
dda83cd7 SM |
2157 | if (blocksym.symbol != NULL) |
2158 | return blocksym; | |
2159 | } | |
13387711 | 2160 | |
edb3359d DJ |
2161 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2162 | break; | |
f61e8913 DC |
2163 | block = BLOCK_SUPERBLOCK (block); |
2164 | } | |
2165 | ||
3aee438b | 2166 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2167 | |
6640a367 | 2168 | return {}; |
f61e8913 DC |
2169 | } |
2170 | ||
cf901d3b | 2171 | /* See symtab.h. */ |
3a40aaa0 | 2172 | |
5f9a71c3 | 2173 | struct symbol * |
de63c46b PA |
2174 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2175 | const struct block *block, | |
d1a2d36d | 2176 | const domain_enum domain) |
f61e8913 DC |
2177 | { |
2178 | struct symbol *sym; | |
f61e8913 | 2179 | |
cc485e62 DE |
2180 | if (symbol_lookup_debug > 1) |
2181 | { | |
d6bc0792 TT |
2182 | struct objfile *objfile = (block == nullptr |
2183 | ? nullptr : block_objfile (block)); | |
cc485e62 DE |
2184 | |
2185 | fprintf_unfiltered (gdb_stdlog, | |
2186 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2187 | name, host_address_to_string (block), | |
2188 | objfile_debug_name (objfile), | |
2189 | domain_name (domain)); | |
2190 | } | |
2191 | ||
de63c46b | 2192 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2193 | if (sym) |
8155455b | 2194 | { |
cc485e62 DE |
2195 | if (symbol_lookup_debug > 1) |
2196 | { | |
2197 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2198 | host_address_to_string (sym)); | |
2199 | } | |
21b556f4 | 2200 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2201 | } |
2202 | ||
cc485e62 DE |
2203 | if (symbol_lookup_debug > 1) |
2204 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2205 | return NULL; |
2206 | } | |
2207 | ||
cf901d3b | 2208 | /* See symtab.h. */ |
3a40aaa0 | 2209 | |
d12307c1 | 2210 | struct block_symbol |
efad9b6a | 2211 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2212 | enum block_enum block_index, |
3a40aaa0 | 2213 | const char *name, |
21b556f4 | 2214 | const domain_enum domain) |
3a40aaa0 | 2215 | { |
442853af CB |
2216 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2217 | ||
bde09ab7 | 2218 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2219 | { |
d12307c1 | 2220 | struct block_symbol result |
dda83cd7 | 2221 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2222 | |
442853af | 2223 | if (result.symbol != nullptr) |
d12307c1 | 2224 | return result; |
15d123c9 | 2225 | } |
56e3f43c | 2226 | |
6640a367 | 2227 | return {}; |
3a40aaa0 UW |
2228 | } |
2229 | ||
19630284 JB |
2230 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2231 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2232 | depending on whether or not we want to search global symbols or |
2233 | static symbols. */ | |
2234 | ||
d12307c1 | 2235 | static struct block_symbol |
c32e6a04 CB |
2236 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2237 | enum block_enum block_index, const char *name, | |
2238 | const domain_enum domain) | |
19630284 | 2239 | { |
ba715d7f JK |
2240 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2241 | ||
cc485e62 DE |
2242 | if (symbol_lookup_debug > 1) |
2243 | { | |
2244 | fprintf_unfiltered (gdb_stdlog, | |
2245 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2246 | objfile_debug_name (objfile), | |
2247 | block_index == GLOBAL_BLOCK | |
2248 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2249 | name, domain_name (domain)); | |
2250 | } | |
2251 | ||
de82891c TV |
2252 | struct block_symbol other; |
2253 | other.symbol = NULL; | |
b669c953 | 2254 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2255 | { |
43f3e411 DE |
2256 | const struct blockvector *bv; |
2257 | const struct block *block; | |
d12307c1 | 2258 | struct block_symbol result; |
43f3e411 DE |
2259 | |
2260 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2261 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2262 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2263 | result.block = block; | |
de82891c TV |
2264 | if (result.symbol == NULL) |
2265 | continue; | |
2266 | if (best_symbol (result.symbol, domain)) | |
a743abeb | 2267 | { |
de82891c TV |
2268 | other = result; |
2269 | break; | |
2270 | } | |
2271 | if (symbol_matches_domain (result.symbol->language (), | |
2272 | SYMBOL_DOMAIN (result.symbol), domain)) | |
2273 | { | |
2274 | struct symbol *better | |
2275 | = better_symbol (other.symbol, result.symbol, domain); | |
2276 | if (better != other.symbol) | |
cc485e62 | 2277 | { |
de82891c TV |
2278 | other.symbol = better; |
2279 | other.block = block; | |
cc485e62 | 2280 | } |
de82891c TV |
2281 | } |
2282 | } | |
d12307c1 | 2283 | |
de82891c TV |
2284 | if (other.symbol != NULL) |
2285 | { | |
2286 | if (symbol_lookup_debug > 1) | |
2287 | { | |
2288 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
2289 | host_address_to_string (other.symbol), | |
2290 | host_address_to_string (other.block)); | |
a743abeb | 2291 | } |
de82891c TV |
2292 | other.symbol = fixup_symbol_section (other.symbol, objfile); |
2293 | return other; | |
a743abeb | 2294 | } |
19630284 | 2295 | |
cc485e62 DE |
2296 | if (symbol_lookup_debug > 1) |
2297 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2298 | return {}; |
19630284 JB |
2299 | } |
2300 | ||
74016e12 | 2301 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2302 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2303 | and all associated separate debug objfiles. |
2304 | ||
2305 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2306 | because the outer loop will cause them to be searched too. This case is | |
2307 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2308 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2309 | |
d12307c1 | 2310 | static struct block_symbol |
422d65e7 DE |
2311 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2312 | const char *linkage_name, | |
2313 | domain_enum domain) | |
2314 | { | |
2315 | enum language lang = current_language->la_language; | |
e9ad22ee | 2316 | struct objfile *main_objfile; |
422d65e7 | 2317 | |
2f408ecb PA |
2318 | demangle_result_storage storage; |
2319 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2320 | ||
422d65e7 DE |
2321 | if (objfile->separate_debug_objfile_backlink) |
2322 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2323 | else | |
2324 | main_objfile = objfile; | |
2325 | ||
bde09ab7 | 2326 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2327 | { |
d12307c1 PMR |
2328 | struct block_symbol result; |
2329 | ||
2330 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2331 | modified_name, domain); | |
2332 | if (result.symbol == NULL) | |
2333 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2334 | modified_name, domain); | |
2335 | if (result.symbol != NULL) | |
2f408ecb | 2336 | return result; |
422d65e7 DE |
2337 | } |
2338 | ||
6640a367 | 2339 | return {}; |
422d65e7 DE |
2340 | } |
2341 | ||
08c23b0d TT |
2342 | /* A helper function that throws an exception when a symbol was found |
2343 | in a psymtab but not in a symtab. */ | |
2344 | ||
2345 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2346 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2347 | struct compunit_symtab *cust) |
08c23b0d TT |
2348 | { |
2349 | error (_("\ | |
2350 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2351 | %s may be an inlined function, or may be a template function\n \ | |
2352 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2353 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2354 | name, |
2355 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2356 | name, name); | |
08c23b0d TT |
2357 | } |
2358 | ||
74016e12 DE |
2359 | /* A helper function for various lookup routines that interfaces with |
2360 | the "quick" symbol table functions. */ | |
8155455b | 2361 | |
d12307c1 | 2362 | static struct block_symbol |
ddbcedf5 CB |
2363 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2364 | enum block_enum block_index, const char *name, | |
2365 | const domain_enum domain) | |
8155455b | 2366 | { |
43f3e411 | 2367 | struct compunit_symtab *cust; |
346d1dfe | 2368 | const struct blockvector *bv; |
8155455b | 2369 | const struct block *block; |
d12307c1 | 2370 | struct block_symbol result; |
8155455b | 2371 | |
ccefe4c4 | 2372 | if (!objfile->sf) |
6640a367 | 2373 | return {}; |
cc485e62 DE |
2374 | |
2375 | if (symbol_lookup_debug > 1) | |
2376 | { | |
2377 | fprintf_unfiltered (gdb_stdlog, | |
2378 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2379 | objfile_debug_name (objfile), | |
2380 | block_index == GLOBAL_BLOCK | |
2381 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2382 | name, domain_name (domain)); | |
2383 | } | |
2384 | ||
43f3e411 DE |
2385 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2386 | if (cust == NULL) | |
cc485e62 DE |
2387 | { |
2388 | if (symbol_lookup_debug > 1) | |
2389 | { | |
2390 | fprintf_unfiltered (gdb_stdlog, | |
2391 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2392 | } | |
6640a367 | 2393 | return {}; |
cc485e62 | 2394 | } |
8155455b | 2395 | |
43f3e411 | 2396 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2397 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2398 | result.symbol = block_lookup_symbol (block, name, |
2399 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2400 | if (result.symbol == NULL) |
43f3e411 | 2401 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2402 | |
2403 | if (symbol_lookup_debug > 1) | |
2404 | { | |
2405 | fprintf_unfiltered (gdb_stdlog, | |
2406 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2407 | host_address_to_string (result.symbol), |
cc485e62 DE |
2408 | host_address_to_string (block)); |
2409 | } | |
2410 | ||
d12307c1 PMR |
2411 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2412 | result.block = block; | |
2413 | return result; | |
8155455b DC |
2414 | } |
2415 | ||
a78a19b1 | 2416 | /* See language.h. */ |
5f9a71c3 | 2417 | |
d12307c1 | 2418 | struct block_symbol |
a78a19b1 AB |
2419 | language_defn::lookup_symbol_nonlocal (const char *name, |
2420 | const struct block *block, | |
2421 | const domain_enum domain) const | |
5f9a71c3 | 2422 | { |
d12307c1 | 2423 | struct block_symbol result; |
5f9a71c3 | 2424 | |
d9060ba6 DE |
2425 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2426 | the current objfile. Searching the current objfile first is useful | |
2427 | for both matching user expectations as well as performance. */ | |
2428 | ||
d12307c1 PMR |
2429 | result = lookup_symbol_in_static_block (name, block, domain); |
2430 | if (result.symbol != NULL) | |
2431 | return result; | |
5f9a71c3 | 2432 | |
1994afbf DE |
2433 | /* If we didn't find a definition for a builtin type in the static block, |
2434 | search for it now. This is actually the right thing to do and can be | |
2435 | a massive performance win. E.g., when debugging a program with lots of | |
2436 | shared libraries we could search all of them only to find out the | |
2437 | builtin type isn't defined in any of them. This is common for types | |
2438 | like "void". */ | |
2439 | if (domain == VAR_DOMAIN) | |
2440 | { | |
2441 | struct gdbarch *gdbarch; | |
2442 | ||
2443 | if (block == NULL) | |
2444 | gdbarch = target_gdbarch (); | |
2445 | else | |
2446 | gdbarch = block_gdbarch (block); | |
a78a19b1 | 2447 | result.symbol = language_lookup_primitive_type_as_symbol (this, |
d12307c1 PMR |
2448 | gdbarch, name); |
2449 | result.block = NULL; | |
2450 | if (result.symbol != NULL) | |
2451 | return result; | |
1994afbf DE |
2452 | } |
2453 | ||
08724ab7 | 2454 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2455 | } |
2456 | ||
cf901d3b | 2457 | /* See symtab.h. */ |
5f9a71c3 | 2458 | |
d12307c1 | 2459 | struct block_symbol |
24d864bb DE |
2460 | lookup_symbol_in_static_block (const char *name, |
2461 | const struct block *block, | |
2462 | const domain_enum domain) | |
5f9a71c3 DC |
2463 | { |
2464 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2465 | struct symbol *sym; |
5f9a71c3 | 2466 | |
cc485e62 | 2467 | if (static_block == NULL) |
6640a367 | 2468 | return {}; |
cc485e62 DE |
2469 | |
2470 | if (symbol_lookup_debug) | |
2471 | { | |
d6bc0792 TT |
2472 | struct objfile *objfile = (block == nullptr |
2473 | ? nullptr : block_objfile (block)); | |
cc485e62 DE |
2474 | |
2475 | fprintf_unfiltered (gdb_stdlog, | |
2476 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2477 | " %s)\n", | |
2478 | name, | |
2479 | host_address_to_string (block), | |
2480 | objfile_debug_name (objfile), | |
2481 | domain_name (domain)); | |
2482 | } | |
2483 | ||
de63c46b PA |
2484 | sym = lookup_symbol_in_block (name, |
2485 | symbol_name_match_type::FULL, | |
2486 | static_block, domain); | |
cc485e62 DE |
2487 | if (symbol_lookup_debug) |
2488 | { | |
2489 | fprintf_unfiltered (gdb_stdlog, | |
2490 | "lookup_symbol_in_static_block (...) = %s\n", | |
2491 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2492 | } | |
d12307c1 | 2493 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2494 | } |
2495 | ||
af3768e9 DE |
2496 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2497 | 1) First search expanded symtabs, and if not found | |
2498 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2499 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2500 | ||
d12307c1 | 2501 | static struct block_symbol |
c32e6a04 | 2502 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2503 | const char *name, const domain_enum domain) |
2504 | { | |
d12307c1 | 2505 | struct block_symbol result; |
af3768e9 | 2506 | |
c32e6a04 CB |
2507 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2508 | ||
cc485e62 DE |
2509 | if (symbol_lookup_debug) |
2510 | { | |
2511 | fprintf_unfiltered (gdb_stdlog, | |
2512 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2513 | objfile_debug_name (objfile), | |
2514 | block_index == GLOBAL_BLOCK | |
2515 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2516 | name, domain_name (domain)); | |
2517 | } | |
2518 | ||
af3768e9 DE |
2519 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2520 | name, domain); | |
d12307c1 | 2521 | if (result.symbol != NULL) |
af3768e9 | 2522 | { |
cc485e62 DE |
2523 | if (symbol_lookup_debug) |
2524 | { | |
2525 | fprintf_unfiltered (gdb_stdlog, | |
2526 | "lookup_symbol_in_objfile (...) = %s" | |
2527 | " (in symtabs)\n", | |
d12307c1 | 2528 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2529 | } |
2530 | return result; | |
af3768e9 DE |
2531 | } |
2532 | ||
cc485e62 DE |
2533 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2534 | name, domain); | |
2535 | if (symbol_lookup_debug) | |
2536 | { | |
2537 | fprintf_unfiltered (gdb_stdlog, | |
2538 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2539 | result.symbol != NULL |
2540 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2541 | : "NULL", |
d12307c1 | 2542 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2543 | } |
af3768e9 DE |
2544 | return result; |
2545 | } | |
2546 | ||
d3214198 TV |
2547 | /* Find the language for partial symbol with NAME. */ |
2548 | ||
2549 | static enum language | |
2550 | find_quick_global_symbol_language (const char *name, const domain_enum domain) | |
2551 | { | |
2552 | for (objfile *objfile : current_program_space->objfiles ()) | |
2553 | { | |
2554 | if (objfile->sf && objfile->sf->qf | |
2555 | && objfile->sf->qf->lookup_global_symbol_language) | |
2556 | continue; | |
2557 | return language_unknown; | |
2558 | } | |
2559 | ||
2560 | for (objfile *objfile : current_program_space->objfiles ()) | |
2561 | { | |
2562 | bool symbol_found_p; | |
2563 | enum language lang | |
2564 | = objfile->sf->qf->lookup_global_symbol_language (objfile, name, domain, | |
2565 | &symbol_found_p); | |
2566 | if (!symbol_found_p) | |
2567 | continue; | |
2568 | return lang; | |
2569 | } | |
2570 | ||
2571 | return language_unknown; | |
2572 | } | |
2573 | ||
19630284 JB |
2574 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2575 | ||
9aa55206 | 2576 | struct global_or_static_sym_lookup_data |
19630284 JB |
2577 | { |
2578 | /* The name of the symbol we are searching for. */ | |
2579 | const char *name; | |
2580 | ||
2581 | /* The domain to use for our search. */ | |
2582 | domain_enum domain; | |
2583 | ||
9aa55206 CB |
2584 | /* The block index in which to search. */ |
2585 | enum block_enum block_index; | |
2586 | ||
19630284 | 2587 | /* The field where the callback should store the symbol if found. |
d12307c1 PMR |
2588 | It should be initialized to {NULL, NULL} before the search is started. */ |
2589 | struct block_symbol result; | |
19630284 JB |
2590 | }; |
2591 | ||
2592 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
9aa55206 CB |
2593 | It searches by name for a symbol in the block given by BLOCK_INDEX of the |
2594 | given OBJFILE. The arguments for the search are passed via CB_DATA, which | |
2595 | in reality is a pointer to struct global_or_static_sym_lookup_data. */ | |
19630284 JB |
2596 | |
2597 | static int | |
9aa55206 CB |
2598 | lookup_symbol_global_or_static_iterator_cb (struct objfile *objfile, |
2599 | void *cb_data) | |
19630284 | 2600 | { |
9aa55206 CB |
2601 | struct global_or_static_sym_lookup_data *data = |
2602 | (struct global_or_static_sym_lookup_data *) cb_data; | |
19630284 | 2603 | |
d12307c1 PMR |
2604 | gdb_assert (data->result.symbol == NULL |
2605 | && data->result.block == NULL); | |
19630284 | 2606 | |
9aa55206 | 2607 | data->result = lookup_symbol_in_objfile (objfile, data->block_index, |
af3768e9 | 2608 | data->name, data->domain); |
19630284 JB |
2609 | |
2610 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2611 | keep going. */ | |
d12307c1 | 2612 | return (data->result.symbol != NULL); |
19630284 JB |
2613 | } |
2614 | ||
9aa55206 CB |
2615 | /* This function contains the common code of lookup_{global,static}_symbol. |
2616 | OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is | |
2617 | the objfile to start the lookup in. */ | |
5f9a71c3 | 2618 | |
9aa55206 CB |
2619 | static struct block_symbol |
2620 | lookup_global_or_static_symbol (const char *name, | |
2621 | enum block_enum block_index, | |
2622 | struct objfile *objfile, | |
2623 | const domain_enum domain) | |
5f9a71c3 | 2624 | { |
f57d2163 | 2625 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2626 | struct block_symbol result; |
9aa55206 | 2627 | struct global_or_static_sym_lookup_data lookup_data; |
f57d2163 DE |
2628 | struct block_symbol_cache *bsc; |
2629 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2630 | |
9aa55206 CB |
2631 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2632 | gdb_assert (objfile == nullptr || block_index == GLOBAL_BLOCK); | |
f57d2163 DE |
2633 | |
2634 | /* First see if we can find the symbol in the cache. | |
2635 | This works because we use the current objfile to qualify the lookup. */ | |
9aa55206 | 2636 | result = symbol_cache_lookup (cache, objfile, block_index, name, domain, |
d12307c1 PMR |
2637 | &bsc, &slot); |
2638 | if (result.symbol != NULL) | |
f57d2163 | 2639 | { |
d12307c1 | 2640 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2641 | return {}; |
d12307c1 | 2642 | return result; |
f57d2163 DE |
2643 | } |
2644 | ||
626ca2c0 | 2645 | /* Do a global search (of global blocks, heh). */ |
d12307c1 | 2646 | if (result.symbol == NULL) |
f57d2163 DE |
2647 | { |
2648 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2649 | lookup_data.name = name; | |
9aa55206 | 2650 | lookup_data.block_index = block_index; |
f57d2163 DE |
2651 | lookup_data.domain = domain; |
2652 | gdbarch_iterate_over_objfiles_in_search_order | |
08feed99 | 2653 | (objfile != NULL ? objfile->arch () : target_gdbarch (), |
9aa55206 | 2654 | lookup_symbol_global_or_static_iterator_cb, &lookup_data, objfile); |
d12307c1 | 2655 | result = lookup_data.result; |
f57d2163 | 2656 | } |
6a3ca067 | 2657 | |
d12307c1 PMR |
2658 | if (result.symbol != NULL) |
2659 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2660 | else |
2661 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2662 | ||
d12307c1 | 2663 | return result; |
5f9a71c3 DC |
2664 | } |
2665 | ||
9aa55206 CB |
2666 | /* See symtab.h. */ |
2667 | ||
2668 | struct block_symbol | |
2669 | lookup_static_symbol (const char *name, const domain_enum domain) | |
2670 | { | |
2671 | return lookup_global_or_static_symbol (name, STATIC_BLOCK, nullptr, domain); | |
2672 | } | |
2673 | ||
2674 | /* See symtab.h. */ | |
2675 | ||
2676 | struct block_symbol | |
2677 | lookup_global_symbol (const char *name, | |
2678 | const struct block *block, | |
2679 | const domain_enum domain) | |
2680 | { | |
d3d32391 AB |
2681 | /* If a block was passed in, we want to search the corresponding |
2682 | global block first. This yields "more expected" behavior, and is | |
2683 | needed to support 'FILENAME'::VARIABLE lookups. */ | |
2684 | const struct block *global_block = block_global_block (block); | |
70bc38f5 | 2685 | symbol *sym = NULL; |
d3d32391 AB |
2686 | if (global_block != nullptr) |
2687 | { | |
70bc38f5 TV |
2688 | sym = lookup_symbol_in_block (name, |
2689 | symbol_name_match_type::FULL, | |
2690 | global_block, domain); | |
2691 | if (sym != NULL && best_symbol (sym, domain)) | |
d3d32391 AB |
2692 | return { sym, global_block }; |
2693 | } | |
2694 | ||
d6bc0792 TT |
2695 | struct objfile *objfile = nullptr; |
2696 | if (block != nullptr) | |
2697 | { | |
2698 | objfile = block_objfile (block); | |
2699 | if (objfile->separate_debug_objfile_backlink != nullptr) | |
2700 | objfile = objfile->separate_debug_objfile_backlink; | |
2701 | } | |
2702 | ||
70bc38f5 TV |
2703 | block_symbol bs |
2704 | = lookup_global_or_static_symbol (name, GLOBAL_BLOCK, objfile, domain); | |
2705 | if (better_symbol (sym, bs.symbol, domain) == sym) | |
2706 | return { sym, global_block }; | |
2707 | else | |
2708 | return bs; | |
9aa55206 CB |
2709 | } |
2710 | ||
ececd218 | 2711 | bool |
4186eb54 KS |
2712 | symbol_matches_domain (enum language symbol_language, |
2713 | domain_enum symbol_domain, | |
2714 | domain_enum domain) | |
2715 | { | |
2716 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2717 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2718 | if (symbol_language == language_cplus | |
2719 | || symbol_language == language_d | |
65547233 TT |
2720 | || symbol_language == language_ada |
2721 | || symbol_language == language_rust) | |
4186eb54 KS |
2722 | { |
2723 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2724 | && symbol_domain == STRUCT_DOMAIN) | |
ececd218 | 2725 | return true; |
4186eb54 KS |
2726 | } |
2727 | /* For all other languages, strict match is required. */ | |
2728 | return (symbol_domain == domain); | |
2729 | } | |
2730 | ||
cf901d3b | 2731 | /* See symtab.h. */ |
c906108c | 2732 | |
ccefe4c4 TT |
2733 | struct type * |
2734 | lookup_transparent_type (const char *name) | |
c906108c | 2735 | { |
54f4ca46 | 2736 | return current_language->lookup_transparent_type (name); |
ccefe4c4 | 2737 | } |
9af17804 | 2738 | |
ccefe4c4 TT |
2739 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2740 | "quick" symbol table functions. */ | |
357e46e7 | 2741 | |
ccefe4c4 | 2742 | static struct type * |
ddbcedf5 CB |
2743 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2744 | enum block_enum block_index, | |
ccefe4c4 TT |
2745 | const char *name) |
2746 | { | |
43f3e411 | 2747 | struct compunit_symtab *cust; |
346d1dfe | 2748 | const struct blockvector *bv; |
582942f4 | 2749 | const struct block *block; |
ccefe4c4 | 2750 | struct symbol *sym; |
c906108c | 2751 | |
ccefe4c4 TT |
2752 | if (!objfile->sf) |
2753 | return NULL; | |
43f3e411 DE |
2754 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2755 | STRUCT_DOMAIN); | |
2756 | if (cust == NULL) | |
ccefe4c4 | 2757 | return NULL; |
c906108c | 2758 | |
43f3e411 | 2759 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2760 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2761 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2762 | block_find_non_opaque_type, NULL); | |
2763 | if (sym == NULL) | |
43f3e411 | 2764 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2765 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2766 | return SYMBOL_TYPE (sym); | |
2767 | } | |
08c23b0d | 2768 | |
b2e2f908 DE |
2769 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2770 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2771 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2772 | ||
2773 | static struct type * | |
ddbcedf5 CB |
2774 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2775 | enum block_enum block_index, | |
b2e2f908 DE |
2776 | const char *name) |
2777 | { | |
b2e2f908 DE |
2778 | const struct blockvector *bv; |
2779 | const struct block *block; | |
2780 | const struct symbol *sym; | |
2781 | ||
b669c953 | 2782 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2783 | { |
2784 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2785 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2786 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2787 | block_find_non_opaque_type, NULL); | |
2788 | if (sym != NULL) | |
2789 | { | |
2790 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2791 | return SYMBOL_TYPE (sym); | |
2792 | } | |
2793 | } | |
c906108c | 2794 | |
ccefe4c4 | 2795 | return NULL; |
b368761e | 2796 | } |
c906108c | 2797 | |
b368761e DC |
2798 | /* The standard implementation of lookup_transparent_type. This code |
2799 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2800 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2801 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2802 | global blocks. */ |
c906108c SS |
2803 | |
2804 | struct type * | |
b368761e | 2805 | basic_lookup_transparent_type (const char *name) |
c906108c | 2806 | { |
ccefe4c4 | 2807 | struct type *t; |
c906108c SS |
2808 | |
2809 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2810 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2811 | of the desired name as a global, then do psymtab-to-symtab |
2812 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2813 | |
2030c079 | 2814 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2815 | { |
2816 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2817 | if (t) | |
2818 | return t; | |
2819 | } | |
c906108c | 2820 | |
2030c079 | 2821 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2822 | { |
2823 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2824 | if (t) | |
2825 | return t; | |
2826 | } | |
c906108c SS |
2827 | |
2828 | /* Now search the static file-level symbols. | |
2829 | Not strictly correct, but more useful than an error. | |
2830 | Do the symtab's first, then | |
c378eb4e | 2831 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2832 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2833 | conversion on the fly and return the found symbol. */ |
c906108c | 2834 | |
2030c079 | 2835 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2836 | { |
2837 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2838 | if (t) | |
2839 | return t; | |
2840 | } | |
c906108c | 2841 | |
2030c079 | 2842 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2843 | { |
2844 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2845 | if (t) | |
2846 | return t; | |
2847 | } | |
ccefe4c4 | 2848 | |
c906108c SS |
2849 | return (struct type *) 0; |
2850 | } | |
2851 | ||
6969f124 | 2852 | /* See symtab.h. */ |
f8eba3c6 | 2853 | |
6969f124 | 2854 | bool |
b5ec771e PA |
2855 | iterate_over_symbols (const struct block *block, |
2856 | const lookup_name_info &name, | |
f8eba3c6 | 2857 | const domain_enum domain, |
14bc53a8 | 2858 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2859 | { |
4eeaa230 DE |
2860 | struct block_iterator iter; |
2861 | struct symbol *sym; | |
f8eba3c6 | 2862 | |
358d6ab3 | 2863 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2864 | { |
c1b5c1eb | 2865 | if (symbol_matches_domain (sym->language (), SYMBOL_DOMAIN (sym), domain)) |
f8eba3c6 | 2866 | { |
7e41c8db KS |
2867 | struct block_symbol block_sym = {sym, block}; |
2868 | ||
2869 | if (!callback (&block_sym)) | |
6969f124 | 2870 | return false; |
f8eba3c6 | 2871 | } |
f8eba3c6 | 2872 | } |
6969f124 | 2873 | return true; |
f8eba3c6 TT |
2874 | } |
2875 | ||
6a3dbf1b TT |
2876 | /* See symtab.h. */ |
2877 | ||
2878 | bool | |
2879 | iterate_over_symbols_terminated | |
2880 | (const struct block *block, | |
2881 | const lookup_name_info &name, | |
2882 | const domain_enum domain, | |
2883 | gdb::function_view<symbol_found_callback_ftype> callback) | |
2884 | { | |
2885 | if (!iterate_over_symbols (block, name, domain, callback)) | |
2886 | return false; | |
2887 | struct block_symbol block_sym = {nullptr, block}; | |
2888 | return callback (&block_sym); | |
2889 | } | |
2890 | ||
43f3e411 DE |
2891 | /* Find the compunit symtab associated with PC and SECTION. |
2892 | This will read in debug info as necessary. */ | |
c906108c | 2893 | |
43f3e411 DE |
2894 | struct compunit_symtab * |
2895 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2896 | { |
43f3e411 | 2897 | struct compunit_symtab *best_cust = NULL; |
61eb46a4 | 2898 | CORE_ADDR best_cust_range = 0; |
77e371c0 | 2899 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2900 | |
2901 | /* If we know that this is not a text address, return failure. This is | |
2902 | necessary because we loop based on the block's high and low code | |
2903 | addresses, which do not include the data ranges, and because | |
2904 | we call find_pc_sect_psymtab which has a similar restriction based | |
2905 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2906 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2907 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2908 | return NULL; |
c906108c SS |
2909 | |
2910 | /* Search all symtabs for the one whose file contains our address, and which | |
2911 | is the smallest of all the ones containing the address. This is designed | |
2912 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2913 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2914 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2915 | ||
2916 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2917 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2918 | been read in already via the dependency mechanism. |
2919 | It might be swifter to create several symtabs with the same name | |
2920 | like xcoff does (I'm not sure). | |
2921 | ||
2922 | It also happens for objfiles that have their functions reordered. | |
2923 | For these, the symtab we are looking for is not necessarily read in. */ | |
2924 | ||
2030c079 | 2925 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2926 | { |
b669c953 | 2927 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2928 | { |
61eb46a4 TV |
2929 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (cust); |
2930 | const struct block *global_block | |
2931 | = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
2932 | CORE_ADDR start = BLOCK_START (global_block); | |
2933 | CORE_ADDR end = BLOCK_END (global_block); | |
2934 | bool in_range_p = start <= pc && pc < end; | |
2935 | if (!in_range_p) | |
2936 | continue; | |
43f3e411 | 2937 | |
1b00ef06 TV |
2938 | if (BLOCKVECTOR_MAP (bv)) |
2939 | { | |
2940 | if (addrmap_find (BLOCKVECTOR_MAP (bv), pc) == nullptr) | |
2941 | continue; | |
2942 | ||
2943 | return cust; | |
2944 | } | |
2945 | ||
61eb46a4 TV |
2946 | CORE_ADDR range = end - start; |
2947 | if (best_cust != nullptr | |
2948 | && range >= best_cust_range) | |
2949 | /* Cust doesn't have a smaller range than best_cust, skip it. */ | |
2950 | continue; | |
2951 | ||
2952 | /* For an objfile that has its functions reordered, | |
2953 | find_pc_psymtab will find the proper partial symbol table | |
2954 | and we simply return its corresponding symtab. */ | |
2955 | /* In order to better support objfiles that contain both | |
2956 | stabs and coff debugging info, we continue on if a psymtab | |
2957 | can't be found. */ | |
2958 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2959 | { | |
2960 | struct compunit_symtab *result; | |
2961 | ||
2962 | result | |
2963 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2964 | msymbol, | |
2965 | pc, | |
2966 | section, | |
2967 | 0); | |
2968 | if (result != NULL) | |
2969 | return result; | |
2970 | } | |
c906108c | 2971 | |
61eb46a4 | 2972 | if (section != 0) |
d8aeb77f | 2973 | { |
61eb46a4 TV |
2974 | struct symbol *sym = NULL; |
2975 | struct block_iterator iter; | |
2976 | ||
bd24c5d6 TV |
2977 | for (int b_index = GLOBAL_BLOCK; |
2978 | b_index <= STATIC_BLOCK && sym == NULL; | |
2979 | ++b_index) | |
d8aeb77f | 2980 | { |
bd24c5d6 TV |
2981 | const struct block *b = BLOCKVECTOR_BLOCK (bv, b_index); |
2982 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
2983 | { | |
2984 | fixup_symbol_section (sym, obj_file); | |
ebbc3a7d | 2985 | if (matching_obj_sections (sym->obj_section (obj_file), |
bd24c5d6 TV |
2986 | section)) |
2987 | break; | |
2988 | } | |
d8aeb77f | 2989 | } |
61eb46a4 TV |
2990 | if (sym == NULL) |
2991 | continue; /* No symbol in this symtab matches | |
d8aeb77f | 2992 | section. */ |
d8aeb77f | 2993 | } |
61eb46a4 TV |
2994 | |
2995 | /* Cust is best found sofar, save it. */ | |
2996 | best_cust = cust; | |
2997 | best_cust_range = range; | |
d8aeb77f TT |
2998 | } |
2999 | } | |
c906108c | 3000 | |
43f3e411 DE |
3001 | if (best_cust != NULL) |
3002 | return best_cust; | |
c906108c | 3003 | |
072cabfe DE |
3004 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
3005 | ||
2030c079 | 3006 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
3007 | { |
3008 | struct compunit_symtab *result; | |
3009 | ||
3010 | if (!objf->sf) | |
3011 | continue; | |
3012 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
3013 | msymbol, | |
3014 | pc, section, | |
3015 | 1); | |
3016 | if (result != NULL) | |
3017 | return result; | |
3018 | } | |
ccefe4c4 TT |
3019 | |
3020 | return NULL; | |
c906108c SS |
3021 | } |
3022 | ||
43f3e411 DE |
3023 | /* Find the compunit symtab associated with PC. |
3024 | This will read in debug info as necessary. | |
3025 | Backward compatibility, no section. */ | |
c906108c | 3026 | |
43f3e411 DE |
3027 | struct compunit_symtab * |
3028 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 3029 | { |
43f3e411 | 3030 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 3031 | } |
71a3c369 TT |
3032 | |
3033 | /* See symtab.h. */ | |
3034 | ||
3035 | struct symbol * | |
3036 | find_symbol_at_address (CORE_ADDR address) | |
3037 | { | |
1f2624a3 TT |
3038 | /* A helper function to search a given symtab for a symbol matching |
3039 | ADDR. */ | |
3040 | auto search_symtab = [] (compunit_symtab *symtab, CORE_ADDR addr) -> symbol * | |
aed57c53 | 3041 | { |
1f2624a3 | 3042 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); |
71a3c369 | 3043 | |
1f2624a3 | 3044 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
aed57c53 | 3045 | { |
1f2624a3 TT |
3046 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
3047 | struct block_iterator iter; | |
3048 | struct symbol *sym; | |
71a3c369 | 3049 | |
1f2624a3 | 3050 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
71a3c369 | 3051 | { |
1f2624a3 TT |
3052 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
3053 | && SYMBOL_VALUE_ADDRESS (sym) == addr) | |
3054 | return sym; | |
3055 | } | |
3056 | } | |
3057 | return nullptr; | |
3058 | }; | |
aed57c53 | 3059 | |
1f2624a3 TT |
3060 | for (objfile *objfile : current_program_space->objfiles ()) |
3061 | { | |
3062 | /* If this objfile doesn't have "quick" functions, then it may | |
3063 | have been read with -readnow, in which case we need to search | |
3064 | the symtabs directly. */ | |
3065 | if (objfile->sf == NULL | |
3066 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
3067 | { | |
3068 | for (compunit_symtab *symtab : objfile->compunits ()) | |
3069 | { | |
3070 | struct symbol *sym = search_symtab (symtab, address); | |
3071 | if (sym != nullptr) | |
3072 | return sym; | |
3073 | } | |
3074 | } | |
3075 | else | |
3076 | { | |
3077 | struct compunit_symtab *symtab | |
3078 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, | |
3079 | address); | |
3080 | if (symtab != NULL) | |
3081 | { | |
3082 | struct symbol *sym = search_symtab (symtab, address); | |
3083 | if (sym != nullptr) | |
3084 | return sym; | |
71a3c369 | 3085 | } |
aed57c53 TT |
3086 | } |
3087 | } | |
71a3c369 TT |
3088 | |
3089 | return NULL; | |
3090 | } | |
3091 | ||
c906108c | 3092 | \f |
c5aa993b | 3093 | |
7e73cedf | 3094 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3095 | Return a structure containing a symtab pointer, a line number, |
3096 | and a pc range for the entire source line. | |
3097 | The value's .pc field is NOT the specified pc. | |
3098 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3099 | use the line that ends there. Otherwise, in that case, the line | |
3100 | that begins there is used. */ | |
3101 | ||
3102 | /* The big complication here is that a line may start in one file, and end just | |
3103 | before the start of another file. This usually occurs when you #include | |
3104 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3105 | range, we must search all symtabs associated with this compilation unit, and | |
3106 | find the one whose first PC is closer than that of the next line in this | |
3107 | symtab. */ | |
3108 | ||
c906108c | 3109 | struct symtab_and_line |
714835d5 | 3110 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3111 | { |
43f3e411 | 3112 | struct compunit_symtab *cust; |
52f0bd74 AC |
3113 | struct linetable *l; |
3114 | int len; | |
52f0bd74 | 3115 | struct linetable_entry *item; |
346d1dfe | 3116 | const struct blockvector *bv; |
7cbd4a93 | 3117 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3118 | |
3119 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3120 | ||
3121 | struct linetable_entry *best = NULL; | |
3122 | CORE_ADDR best_end = 0; | |
3123 | struct symtab *best_symtab = 0; | |
3124 | ||
3125 | /* Store here the first line number | |
3126 | of a file which contains the line at the smallest pc after PC. | |
3127 | If we don't find a line whose range contains PC, | |
3128 | we will use a line one less than this, | |
3129 | with a range from the start of that file to the first line's pc. */ | |
3130 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3131 | |
3132 | /* Info on best line seen in this file. */ | |
3133 | ||
3134 | struct linetable_entry *prev; | |
3135 | ||
3136 | /* If this pc is not from the current frame, | |
3137 | it is the address of the end of a call instruction. | |
3138 | Quite likely that is the start of the following statement. | |
3139 | But what we want is the statement containing the instruction. | |
3140 | Fudge the pc to make sure we get that. */ | |
3141 | ||
b77b1eb7 JB |
3142 | /* It's tempting to assume that, if we can't find debugging info for |
3143 | any function enclosing PC, that we shouldn't search for line | |
3144 | number info, either. However, GAS can emit line number info for | |
3145 | assembly files --- very helpful when debugging hand-written | |
3146 | assembly code. In such a case, we'd have no debug info for the | |
3147 | function, but we would have line info. */ | |
648f4f79 | 3148 | |
c906108c SS |
3149 | if (notcurrent) |
3150 | pc -= 1; | |
3151 | ||
c5aa993b | 3152 | /* elz: added this because this function returned the wrong |
c906108c | 3153 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3154 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3155 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3156 | taken to be the one of the line before the pc. */ |
3157 | ||
c906108c | 3158 | /* RT: Further explanation: |
c5aa993b | 3159 | |
c906108c SS |
3160 | * We have stubs (trampolines) inserted between procedures. |
3161 | * | |
3162 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3163 | * exists in the main image. | |
3164 | * | |
3165 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3166 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3167 | * the others appear as text. E.g.: |
3168 | * | |
9af17804 | 3169 | * Minimal symbol table for main image |
c906108c SS |
3170 | * main: code for main (text symbol) |
3171 | * shr1: stub (trampoline symbol) | |
3172 | * foo: code for foo (text symbol) | |
3173 | * ... | |
3174 | * Minimal symbol table for "shr1" image: | |
3175 | * ... | |
3176 | * shr1: code for shr1 (text symbol) | |
3177 | * ... | |
3178 | * | |
3179 | * So the code below is trying to detect if we are in the stub | |
3180 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3181 | * and if found, do the symbolization from the real-code address | |
3182 | * rather than the stub address. | |
3183 | * | |
3184 | * Assumptions being made about the minimal symbol table: | |
3185 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3186 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3187 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3188 | * symbol (the "foo" text symbol for example) and will not |
3189 | * return the trampoline. | |
3190 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3191 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3192 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3193 | * check for the address being the same, to avoid an |
3194 | * infinite recursion. | |
3195 | */ | |
c5aa993b | 3196 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3197 | if (msymbol.minsym != NULL) |
3198 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3199 | { |
77e371c0 | 3200 | struct bound_minimal_symbol mfunsym |
c9d95fa3 | 3201 | = lookup_minimal_symbol_text (msymbol.minsym->linkage_name (), |
77e371c0 TT |
3202 | NULL); |
3203 | ||
3204 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3205 | /* I eliminated this warning since it is coming out |
3206 | * in the following situation: | |
3207 | * gdb shmain // test program with shared libraries | |
3208 | * (gdb) break shr1 // function in shared lib | |
3209 | * Warning: In stub for ... | |
9af17804 | 3210 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3211 | * so of course we can't find the real func/line info, |
3212 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3213 | * So I commented out the warning. RT */ |
3e43a32a | 3214 | /* warning ("In stub for %s; unable to find real function/line info", |
987012b8 | 3215 | msymbol->linkage_name ()); */ |
c378eb4e | 3216 | ; |
c5aa993b | 3217 | /* fall through */ |
77e371c0 TT |
3218 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3219 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3220 | /* Avoid infinite recursion */ |
c378eb4e | 3221 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3222 | /* warning ("In stub for %s; unable to find real function/line info", |
987012b8 | 3223 | msymbol->linkage_name ()); */ |
c378eb4e | 3224 | ; |
c5aa993b JM |
3225 | /* fall through */ |
3226 | else | |
dd69bf7a KB |
3227 | { |
3228 | /* Detect an obvious case of infinite recursion. If this | |
3229 | should occur, we'd like to know about it, so error out, | |
3230 | fatally. */ | |
3231 | if (BMSYMBOL_VALUE_ADDRESS (mfunsym) == pc) | |
3232 | internal_error (__FILE__, __LINE__, | |
dda83cd7 | 3233 | _("Infinite recursion detected in find_pc_sect_line;" |
dd69bf7a KB |
3234 | "please file a bug report")); |
3235 | ||
3236 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); | |
3237 | } | |
c5aa993b | 3238 | } |
c906108c | 3239 | |
51abb421 PA |
3240 | symtab_and_line val; |
3241 | val.pspace = current_program_space; | |
c906108c | 3242 | |
43f3e411 DE |
3243 | cust = find_pc_sect_compunit_symtab (pc, section); |
3244 | if (cust == NULL) | |
c906108c | 3245 | { |
c378eb4e | 3246 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3247 | if (notcurrent) |
3248 | pc++; | |
3249 | val.pc = pc; | |
3250 | return val; | |
3251 | } | |
3252 | ||
43f3e411 | 3253 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3254 | |
3255 | /* Look at all the symtabs that share this blockvector. | |
3256 | They all have the same apriori range, that we found was right; | |
3257 | but they have different line tables. */ | |
3258 | ||
5accd1a0 | 3259 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3260 | { |
3261 | /* Find the best line in this symtab. */ | |
43f3e411 | 3262 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3263 | if (!l) |
c5aa993b | 3264 | continue; |
c906108c SS |
3265 | len = l->nitems; |
3266 | if (len <= 0) | |
3267 | { | |
3268 | /* I think len can be zero if the symtab lacks line numbers | |
3269 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3270 | I'm not sure which, and maybe it depends on the symbol | |
3271 | reader). */ | |
3272 | continue; | |
3273 | } | |
3274 | ||
3275 | prev = NULL; | |
c378eb4e | 3276 | item = l->item; /* Get first line info. */ |
c906108c SS |
3277 | |
3278 | /* Is this file's first line closer than the first lines of other files? | |
dda83cd7 | 3279 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3280 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3281 | alt = item; |
c906108c | 3282 | |
b926417a | 3283 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3284 | const struct linetable_entry & lhs)->bool |
3285 | { | |
b926417a | 3286 | return comp_pc < lhs.pc; |
7cbe16e9 | 3287 | }; |
c906108c | 3288 | |
7cbe16e9 SR |
3289 | struct linetable_entry *first = item; |
3290 | struct linetable_entry *last = item + len; | |
3291 | item = std::upper_bound (first, last, pc, pc_compare); | |
3292 | if (item != first) | |
d8cc8af6 | 3293 | prev = item - 1; /* Found a matching item. */ |
c906108c SS |
3294 | |
3295 | /* At this point, prev points at the line whose start addr is <= pc, and | |
dda83cd7 SM |
3296 | item points at the next line. If we ran off the end of the linetable |
3297 | (pc >= start of the last line), then prev == item. If pc < start of | |
3298 | the first line, prev will not be set. */ | |
c906108c SS |
3299 | |
3300 | /* Is this file's best line closer than the best in the other files? | |
dda83cd7 SM |
3301 | If so, record this file, and its best line, as best so far. Don't |
3302 | save prev if it represents the end of a function (i.e. line number | |
3303 | 0) instead of a real line. */ | |
c906108c | 3304 | |
083ae935 | 3305 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3306 | { |
3307 | best = prev; | |
43f3e411 | 3308 | best_symtab = iter_s; |
25d53da1 | 3309 | |
8c95582d AB |
3310 | /* If during the binary search we land on a non-statement entry, |
3311 | scan backward through entries at the same address to see if | |
3312 | there is an entry marked as is-statement. In theory this | |
3313 | duplication should have been removed from the line table | |
3314 | during construction, this is just a double check. If the line | |
3315 | table has had the duplication removed then this should be | |
3316 | pretty cheap. */ | |
3317 | if (!best->is_stmt) | |
3318 | { | |
3319 | struct linetable_entry *tmp = best; | |
3320 | while (tmp > first && (tmp - 1)->pc == tmp->pc | |
3321 | && (tmp - 1)->line != 0 && !tmp->is_stmt) | |
3322 | --tmp; | |
3323 | if (tmp->is_stmt) | |
3324 | best = tmp; | |
3325 | } | |
3326 | ||
25d53da1 KB |
3327 | /* Discard BEST_END if it's before the PC of the current BEST. */ |
3328 | if (best_end <= best->pc) | |
3329 | best_end = 0; | |
c906108c | 3330 | } |
25d53da1 KB |
3331 | |
3332 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3333 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3334 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3335 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3336 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3337 | best_end = item->pc; |
c906108c SS |
3338 | } |
3339 | ||
3340 | if (!best_symtab) | |
3341 | { | |
e86e87f7 DJ |
3342 | /* If we didn't find any line number info, just return zeros. |
3343 | We used to return alt->line - 1 here, but that could be | |
3344 | anywhere; if we don't have line number info for this PC, | |
3345 | don't make some up. */ | |
3346 | val.pc = pc; | |
c906108c | 3347 | } |
e8717518 FF |
3348 | else if (best->line == 0) |
3349 | { | |
3350 | /* If our best fit is in a range of PC's for which no line | |
3351 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3352 | find any valid line information. */ |
e8717518 FF |
3353 | val.pc = pc; |
3354 | } | |
c906108c SS |
3355 | else |
3356 | { | |
8c95582d | 3357 | val.is_stmt = best->is_stmt; |
c906108c SS |
3358 | val.symtab = best_symtab; |
3359 | val.line = best->line; | |
3360 | val.pc = best->pc; | |
3361 | if (best_end && (!alt || best_end < alt->pc)) | |
3362 | val.end = best_end; | |
3363 | else if (alt) | |
3364 | val.end = alt->pc; | |
3365 | else | |
3366 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3367 | } | |
3368 | val.section = section; | |
3369 | return val; | |
3370 | } | |
3371 | ||
c378eb4e | 3372 | /* Backward compatibility (no section). */ |
c906108c SS |
3373 | |
3374 | struct symtab_and_line | |
fba45db2 | 3375 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3376 | { |
714835d5 | 3377 | struct obj_section *section; |
c906108c SS |
3378 | |
3379 | section = find_pc_overlay (pc); | |
31a8f60f AB |
3380 | if (!pc_in_unmapped_range (pc, section)) |
3381 | return find_pc_sect_line (pc, section, notcurrent); | |
3382 | ||
3383 | /* If the original PC was an unmapped address then we translate this to a | |
3384 | mapped address in order to lookup the sal. However, as the user | |
3385 | passed us an unmapped address it makes more sense to return a result | |
3386 | that has the pc and end fields translated to unmapped addresses. */ | |
3387 | pc = overlay_mapped_address (pc, section); | |
3388 | symtab_and_line sal = find_pc_sect_line (pc, section, notcurrent); | |
3389 | sal.pc = overlay_unmapped_address (sal.pc, section); | |
3390 | sal.end = overlay_unmapped_address (sal.end, section); | |
3391 | return sal; | |
c906108c | 3392 | } |
34248c3a DE |
3393 | |
3394 | /* See symtab.h. */ | |
3395 | ||
3396 | struct symtab * | |
3397 | find_pc_line_symtab (CORE_ADDR pc) | |
3398 | { | |
3399 | struct symtab_and_line sal; | |
3400 | ||
3401 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3402 | There are currently no callers that ever pass non-zero. */ | |
3403 | sal = find_pc_line (pc, 0); | |
3404 | return sal.symtab; | |
3405 | } | |
c906108c | 3406 | \f |
c906108c SS |
3407 | /* Find line number LINE in any symtab whose name is the same as |
3408 | SYMTAB. | |
3409 | ||
3410 | If found, return the symtab that contains the linetable in which it was | |
3411 | found, set *INDEX to the index in the linetable of the best entry | |
ececd218 | 3412 | found, and set *EXACT_MATCH to true if the value returned is an |
c906108c SS |
3413 | exact match. |
3414 | ||
3415 | If not found, return NULL. */ | |
3416 | ||
50641945 | 3417 | struct symtab * |
5accd1a0 | 3418 | find_line_symtab (struct symtab *sym_tab, int line, |
ececd218 | 3419 | int *index, bool *exact_match) |
c906108c | 3420 | { |
6f43c46f | 3421 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3422 | |
3423 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3424 | so far seen. */ | |
3425 | ||
3426 | int best_index; | |
3427 | struct linetable *best_linetable; | |
3428 | struct symtab *best_symtab; | |
3429 | ||
3430 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3431 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3432 | best_symtab = sym_tab; | |
f8eba3c6 | 3433 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3434 | if (best_index < 0 || !exact) |
3435 | { | |
3436 | /* Didn't find an exact match. So we better keep looking for | |
dda83cd7 SM |
3437 | another symtab with the same name. In the case of xcoff, |
3438 | multiple csects for one source file (produced by IBM's FORTRAN | |
3439 | compiler) produce multiple symtabs (this is unavoidable | |
3440 | assuming csects can be at arbitrary places in memory and that | |
3441 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3442 | |
3443 | /* BEST is the smallest linenumber > LINE so far seen, | |
dda83cd7 SM |
3444 | or 0 if none has been seen so far. |
3445 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3446 | int best; |
3447 | ||
c906108c SS |
3448 | if (best_index >= 0) |
3449 | best = best_linetable->item[best_index].line; | |
3450 | else | |
3451 | best = 0; | |
3452 | ||
2030c079 | 3453 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3454 | { |
3455 | if (objfile->sf) | |
3456 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3457 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3458 | } |
51432cca | 3459 | |
2030c079 | 3460 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3461 | { |
b669c953 | 3462 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3463 | { |
3464 | for (symtab *s : compunit_filetabs (cu)) | |
3465 | { | |
3466 | struct linetable *l; | |
3467 | int ind; | |
3468 | ||
3469 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3470 | continue; | |
3471 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3472 | symtab_to_fullname (s)) != 0) | |
3473 | continue; | |
3474 | l = SYMTAB_LINETABLE (s); | |
3475 | ind = find_line_common (l, line, &exact, 0); | |
3476 | if (ind >= 0) | |
3477 | { | |
3478 | if (exact) | |
3479 | { | |
3480 | best_index = ind; | |
3481 | best_linetable = l; | |
3482 | best_symtab = s; | |
3483 | goto done; | |
3484 | } | |
3485 | if (best == 0 || l->item[ind].line < best) | |
3486 | { | |
3487 | best = l->item[ind].line; | |
3488 | best_index = ind; | |
3489 | best_linetable = l; | |
3490 | best_symtab = s; | |
3491 | } | |
3492 | } | |
3493 | } | |
3494 | } | |
3495 | } | |
c906108c | 3496 | } |
c5aa993b | 3497 | done: |
c906108c SS |
3498 | if (best_index < 0) |
3499 | return NULL; | |
3500 | ||
3501 | if (index) | |
3502 | *index = best_index; | |
3503 | if (exact_match) | |
ececd218 | 3504 | *exact_match = (exact != 0); |
c906108c SS |
3505 | |
3506 | return best_symtab; | |
3507 | } | |
f8eba3c6 TT |
3508 | |
3509 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3510 | exactly match LINE. Returns an empty vector if there are no exact |
3511 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3512 | |
67d89901 | 3513 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3514 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3515 | struct linetable_entry **best_item) | |
3516 | { | |
c656bca5 | 3517 | int start = 0; |
67d89901 | 3518 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3519 | |
3520 | /* First, collect all the PCs that are at this line. */ | |
3521 | while (1) | |
3522 | { | |
3523 | int was_exact; | |
3524 | int idx; | |
3525 | ||
8435453b DE |
3526 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3527 | start); | |
f8eba3c6 TT |
3528 | if (idx < 0) |
3529 | break; | |
3530 | ||
3531 | if (!was_exact) | |
3532 | { | |
8435453b | 3533 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 | 3534 | |
8c95582d AB |
3535 | if (*best_item == NULL |
3536 | || (item->line < (*best_item)->line && item->is_stmt)) | |
f8eba3c6 TT |
3537 | *best_item = item; |
3538 | ||
3539 | break; | |
3540 | } | |
3541 | ||
67d89901 | 3542 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3543 | start = idx + 1; |
3544 | } | |
3545 | ||
3546 | return result; | |
3547 | } | |
3548 | ||
c906108c SS |
3549 | \f |
3550 | /* Set the PC value for a given source file and line number and return true. | |
ececd218 | 3551 | Returns false for invalid line number (and sets the PC to 0). |
c906108c SS |
3552 | The source file is specified with a struct symtab. */ |
3553 | ||
ececd218 | 3554 | bool |
fba45db2 | 3555 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3556 | { |
3557 | struct linetable *l; | |
3558 | int ind; | |
3559 | ||
3560 | *pc = 0; | |
3561 | if (symtab == 0) | |
ececd218 | 3562 | return false; |
c906108c SS |
3563 | |
3564 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3565 | if (symtab != NULL) | |
3566 | { | |
8435453b | 3567 | l = SYMTAB_LINETABLE (symtab); |
c906108c | 3568 | *pc = l->item[ind].pc; |
ececd218 | 3569 | return true; |
c906108c SS |
3570 | } |
3571 | else | |
ececd218 | 3572 | return false; |
c906108c SS |
3573 | } |
3574 | ||
3575 | /* Find the range of pc values in a line. | |
3576 | Store the starting pc of the line into *STARTPTR | |
3577 | and the ending pc (start of next line) into *ENDPTR. | |
ececd218 CB |
3578 | Returns true to indicate success. |
3579 | Returns false if could not find the specified line. */ | |
c906108c | 3580 | |
ececd218 | 3581 | bool |
fba45db2 KB |
3582 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3583 | CORE_ADDR *endptr) | |
c906108c SS |
3584 | { |
3585 | CORE_ADDR startaddr; | |
3586 | struct symtab_and_line found_sal; | |
3587 | ||
3588 | startaddr = sal.pc; | |
c5aa993b | 3589 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
ececd218 | 3590 | return false; |
c906108c SS |
3591 | |
3592 | /* This whole function is based on address. For example, if line 10 has | |
3593 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3594 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3595 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3596 | This also insures that we never give a range like "starts at 0x134 | |
3597 | and ends at 0x12c". */ | |
3598 | ||
3599 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3600 | if (found_sal.line != sal.line) | |
3601 | { | |
3602 | /* The specified line (sal) has zero bytes. */ | |
3603 | *startptr = found_sal.pc; | |
3604 | *endptr = found_sal.pc; | |
3605 | } | |
3606 | else | |
3607 | { | |
3608 | *startptr = found_sal.pc; | |
3609 | *endptr = found_sal.end; | |
3610 | } | |
ececd218 | 3611 | return true; |
c906108c SS |
3612 | } |
3613 | ||
3614 | /* Given a line table and a line number, return the index into the line | |
3615 | table for the pc of the nearest line whose number is >= the specified one. | |
3616 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3617 | START is the index at which to start searching the line table. |
c906108c SS |
3618 | |
3619 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3620 | ||
3621 | static int | |
aa1ee363 | 3622 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3623 | int *exact_match, int start) |
c906108c | 3624 | { |
52f0bd74 AC |
3625 | int i; |
3626 | int len; | |
c906108c SS |
3627 | |
3628 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3629 | or 0 if none has been seen so far. | |
3630 | BEST_INDEX identifies the item for it. */ | |
3631 | ||
3632 | int best_index = -1; | |
3633 | int best = 0; | |
3634 | ||
b7589f7d DJ |
3635 | *exact_match = 0; |
3636 | ||
c906108c SS |
3637 | if (lineno <= 0) |
3638 | return -1; | |
3639 | if (l == 0) | |
3640 | return -1; | |
3641 | ||
3642 | len = l->nitems; | |
f8eba3c6 | 3643 | for (i = start; i < len; i++) |
c906108c | 3644 | { |
aa1ee363 | 3645 | struct linetable_entry *item = &(l->item[i]); |
c906108c | 3646 | |
8c95582d AB |
3647 | /* Ignore non-statements. */ |
3648 | if (!item->is_stmt) | |
3649 | continue; | |
3650 | ||
c906108c SS |
3651 | if (item->line == lineno) |
3652 | { | |
3653 | /* Return the first (lowest address) entry which matches. */ | |
3654 | *exact_match = 1; | |
3655 | return i; | |
3656 | } | |
3657 | ||
3658 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3659 | { | |
3660 | best = item->line; | |
3661 | best_index = i; | |
3662 | } | |
3663 | } | |
3664 | ||
3665 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3666 | return best_index; |
3667 | } | |
3668 | ||
ececd218 | 3669 | bool |
fba45db2 | 3670 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3671 | { |
3672 | struct symtab_and_line sal; | |
433759f7 | 3673 | |
c906108c SS |
3674 | sal = find_pc_line (pc, 0); |
3675 | *startptr = sal.pc; | |
3676 | *endptr = sal.end; | |
3677 | return sal.symtab != 0; | |
3678 | } | |
3679 | ||
cd2bb709 PA |
3680 | /* Helper for find_function_start_sal. Does most of the work, except |
3681 | setting the sal's symbol. */ | |
aab2f208 | 3682 | |
cd2bb709 PA |
3683 | static symtab_and_line |
3684 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3685 | bool funfirstline) | |
aab2f208 | 3686 | { |
42ddae10 | 3687 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3688 | |
6e22494e JK |
3689 | if (funfirstline && sal.symtab != NULL |
3690 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3691 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3692 | { | |
08feed99 | 3693 | struct gdbarch *gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
141c5cc4 | 3694 | |
42ddae10 | 3695 | sal.pc = func_addr; |
141c5cc4 JK |
3696 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3697 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3698 | return sal; |
3699 | } | |
3700 | ||
aab2f208 | 3701 | /* We always should have a line for the function start address. |
42ddae10 | 3702 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3703 | just the PC and hope that skip_prologue_sal (if requested) |
3704 | can find a line number for after the prologue. */ | |
42ddae10 | 3705 | if (sal.pc < func_addr) |
aab2f208 | 3706 | { |
51abb421 | 3707 | sal = {}; |
aab2f208 | 3708 | sal.pspace = current_program_space; |
42ddae10 | 3709 | sal.pc = func_addr; |
08be3fe3 | 3710 | sal.section = section; |
aab2f208 DE |
3711 | } |
3712 | ||
3713 | if (funfirstline) | |
3714 | skip_prologue_sal (&sal); | |
3715 | ||
3716 | return sal; | |
3717 | } | |
3718 | ||
42ddae10 PA |
3719 | /* See symtab.h. */ |
3720 | ||
cd2bb709 PA |
3721 | symtab_and_line |
3722 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3723 | bool funfirstline) | |
3724 | { | |
3725 | symtab_and_line sal | |
3726 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3727 | ||
3728 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3729 | the symtab and linenumber, but not a symbol. Fill in the | |
3730 | function symbol too. */ | |
3731 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3732 | ||
3733 | return sal; | |
3734 | } | |
3735 | ||
3736 | /* See symtab.h. */ | |
3737 | ||
42ddae10 PA |
3738 | symtab_and_line |
3739 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3740 | { | |
3741 | fixup_symbol_section (sym, NULL); | |
3742 | symtab_and_line sal | |
2b1ffcfd | 3743 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
ebbc3a7d | 3744 | sym->obj_section (symbol_objfile (sym)), |
cd2bb709 | 3745 | funfirstline); |
42ddae10 PA |
3746 | sal.symbol = sym; |
3747 | return sal; | |
3748 | } | |
3749 | ||
3750 | ||
8c7a1ee8 EZ |
3751 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3752 | address for that function that has an entry in SYMTAB's line info | |
3753 | table. If such an entry cannot be found, return FUNC_ADDR | |
3754 | unaltered. */ | |
eca864fe | 3755 | |
70221824 | 3756 | static CORE_ADDR |
8c7a1ee8 EZ |
3757 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3758 | { | |
3759 | CORE_ADDR func_start, func_end; | |
3760 | struct linetable *l; | |
952a6d41 | 3761 | int i; |
8c7a1ee8 EZ |
3762 | |
3763 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3764 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3765 | if (l == NULL) |
3766 | return func_addr; | |
3767 | ||
3768 | /* Get the range for the function's PC values, or give up if we | |
3769 | cannot, for some reason. */ | |
3770 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3771 | return func_addr; | |
3772 | ||
3773 | /* Linetable entries are ordered by PC values, see the commentary in | |
3774 | symtab.h where `struct linetable' is defined. Thus, the first | |
3775 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3776 | address we are looking for. */ | |
3777 | for (i = 0; i < l->nitems; i++) | |
3778 | { | |
3779 | struct linetable_entry *item = &(l->item[i]); | |
3780 | ||
3781 | /* Don't use line numbers of zero, they mark special entries in | |
3782 | the table. See the commentary on symtab.h before the | |
3783 | definition of struct linetable. */ | |
3784 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3785 | return item->pc; | |
3786 | } | |
3787 | ||
3788 | return func_addr; | |
3789 | } | |
3790 | ||
059acae7 UW |
3791 | /* Adjust SAL to the first instruction past the function prologue. |
3792 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3793 | If the line number was explicitly specified then the SAL can still be |
3794 | updated, unless the language for SAL is assembler, in which case the SAL | |
3795 | will be left unchanged. | |
3796 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3797 | |
059acae7 UW |
3798 | void |
3799 | skip_prologue_sal (struct symtab_and_line *sal) | |
3800 | { | |
3801 | struct symbol *sym; | |
3802 | struct symtab_and_line start_sal; | |
8be455d7 | 3803 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3804 | struct obj_section *section; |
3805 | const char *name; | |
3806 | struct objfile *objfile; | |
3807 | struct gdbarch *gdbarch; | |
3977b71f | 3808 | const struct block *b, *function_block; |
8be455d7 | 3809 | int force_skip, skip; |
c906108c | 3810 | |
a4b411d6 | 3811 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3812 | if (sal->explicit_pc) |
3813 | return; | |
6c95b8df | 3814 | |
5b0e2db4 AB |
3815 | /* In assembly code, if the user asks for a specific line then we should |
3816 | not adjust the SAL. The user already has instruction level | |
3817 | visibility in this case, so selecting a line other than one requested | |
3818 | is likely to be the wrong choice. */ | |
3819 | if (sal->symtab != nullptr | |
3820 | && sal->explicit_line | |
3821 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3822 | return; | |
3823 | ||
5ed8105e PA |
3824 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3825 | ||
059acae7 | 3826 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3827 | |
059acae7 UW |
3828 | sym = find_pc_sect_function (sal->pc, sal->section); |
3829 | if (sym != NULL) | |
bccdca4a | 3830 | { |
059acae7 UW |
3831 | fixup_symbol_section (sym, NULL); |
3832 | ||
08be3fe3 | 3833 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3834 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ebbc3a7d | 3835 | section = sym->obj_section (objfile); |
987012b8 | 3836 | name = sym->linkage_name (); |
c906108c | 3837 | } |
059acae7 UW |
3838 | else |
3839 | { | |
7c7b6655 | 3840 | struct bound_minimal_symbol msymbol |
dda83cd7 | 3841 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); |
433759f7 | 3842 | |
7c7b6655 | 3843 | if (msymbol.minsym == NULL) |
5ed8105e | 3844 | return; |
059acae7 | 3845 | |
7c7b6655 | 3846 | objfile = msymbol.objfile; |
77e371c0 | 3847 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
ebbc3a7d | 3848 | section = msymbol.minsym->obj_section (objfile); |
c9d95fa3 | 3849 | name = msymbol.minsym->linkage_name (); |
059acae7 UW |
3850 | } |
3851 | ||
08feed99 | 3852 | gdbarch = objfile->arch (); |
059acae7 | 3853 | |
8be455d7 JK |
3854 | /* Process the prologue in two passes. In the first pass try to skip the |
3855 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3856 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3857 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3858 | |
8be455d7 JK |
3859 | skip = 1; |
3860 | force_skip = 1; | |
059acae7 | 3861 | |
8be455d7 JK |
3862 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3863 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3864 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3865 | if (sym != NULL |
3866 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3867 | force_skip = 0; |
059acae7 | 3868 | |
8be455d7 JK |
3869 | saved_pc = pc; |
3870 | do | |
c906108c | 3871 | { |
8be455d7 | 3872 | pc = saved_pc; |
4309257c | 3873 | |
8be455d7 JK |
3874 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3875 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3876 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3877 | pc = overlay_unmapped_address (pc, section); | |
3878 | ||
3879 | /* Skip "first line" of function (which is actually its prologue). */ | |
3880 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 | 3881 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
dda83cd7 | 3882 | pc = gdbarch_skip_entrypoint (gdbarch, pc); |
8be455d7 | 3883 | if (skip) |
46a62268 | 3884 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3885 | |
3886 | /* For overlays, map pc back into its mapped VMA range. */ | |
3887 | pc = overlay_mapped_address (pc, section); | |
3888 | ||
3889 | /* Calculate line number. */ | |
059acae7 | 3890 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3891 | |
3892 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3893 | line is still part of the same function. */ | |
3894 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3895 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3896 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3897 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3898 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3899 | { |
3900 | /* First pc of next line */ | |
3901 | pc = start_sal.end; | |
3902 | /* Recalculate the line number (might not be N+1). */ | |
3903 | start_sal = find_pc_sect_line (pc, section, 0); | |
3904 | } | |
3905 | ||
3906 | /* On targets with executable formats that don't have a concept of | |
3907 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3908 | to `__main' in `main' between the prologue and before user | |
3909 | code. */ | |
3910 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3911 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3912 | { |
3913 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3914 | /* Recalculate the line number (might not be N+1). */ | |
3915 | start_sal = find_pc_sect_line (pc, section, 0); | |
3916 | force_skip = 1; | |
3917 | } | |
4309257c | 3918 | } |
8be455d7 | 3919 | while (!force_skip && skip--); |
4309257c | 3920 | |
8c7a1ee8 EZ |
3921 | /* If we still don't have a valid source line, try to find the first |
3922 | PC in the lineinfo table that belongs to the same function. This | |
3923 | happens with COFF debug info, which does not seem to have an | |
3924 | entry in lineinfo table for the code after the prologue which has | |
3925 | no direct relation to source. For example, this was found to be | |
3926 | the case with the DJGPP target using "gcc -gcoff" when the | |
3927 | compiler inserted code after the prologue to make sure the stack | |
3928 | is aligned. */ | |
8be455d7 | 3929 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3930 | { |
08be3fe3 | 3931 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3932 | /* Recalculate the line number. */ |
059acae7 | 3933 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3934 | } |
3935 | ||
059acae7 UW |
3936 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3937 | forward SAL to the end of the prologue. */ | |
3938 | if (sal->pc >= pc) | |
3939 | return; | |
3940 | ||
3941 | sal->pc = pc; | |
3942 | sal->section = section; | |
059acae7 UW |
3943 | sal->symtab = start_sal.symtab; |
3944 | sal->line = start_sal.line; | |
3945 | sal->end = start_sal.end; | |
c906108c | 3946 | |
edb3359d DJ |
3947 | /* Check if we are now inside an inlined function. If we can, |
3948 | use the call site of the function instead. */ | |
059acae7 | 3949 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3950 | function_block = NULL; |
3951 | while (b != NULL) | |
3952 | { | |
3953 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3954 | function_block = b; | |
3955 | else if (BLOCK_FUNCTION (b) != NULL) | |
3956 | break; | |
3957 | b = BLOCK_SUPERBLOCK (b); | |
3958 | } | |
3959 | if (function_block != NULL | |
3960 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3961 | { | |
059acae7 | 3962 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3963 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3964 | } |
c906108c | 3965 | } |
50641945 | 3966 | |
f1f58506 DE |
3967 | /* Given PC at the function's start address, attempt to find the |
3968 | prologue end using SAL information. Return zero if the skip fails. | |
3969 | ||
3970 | A non-optimized prologue traditionally has one SAL for the function | |
3971 | and a second for the function body. A single line function has | |
3972 | them both pointing at the same line. | |
3973 | ||
3974 | An optimized prologue is similar but the prologue may contain | |
3975 | instructions (SALs) from the instruction body. Need to skip those | |
3976 | while not getting into the function body. | |
3977 | ||
3978 | The functions end point and an increasing SAL line are used as | |
3979 | indicators of the prologue's endpoint. | |
3980 | ||
3981 | This code is based on the function refine_prologue_limit | |
3982 | (found in ia64). */ | |
3983 | ||
3984 | CORE_ADDR | |
3985 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3986 | { | |
3987 | struct symtab_and_line prologue_sal; | |
3988 | CORE_ADDR start_pc; | |
3989 | CORE_ADDR end_pc; | |
3990 | const struct block *bl; | |
3991 | ||
3992 | /* Get an initial range for the function. */ | |
3993 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3994 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3995 | ||
3996 | prologue_sal = find_pc_line (start_pc, 0); | |
3997 | if (prologue_sal.line != 0) | |
3998 | { | |
3999 | /* For languages other than assembly, treat two consecutive line | |
4000 | entries at the same address as a zero-instruction prologue. | |
4001 | The GNU assembler emits separate line notes for each instruction | |
4002 | in a multi-instruction macro, but compilers generally will not | |
4003 | do this. */ | |
4004 | if (prologue_sal.symtab->language != language_asm) | |
4005 | { | |
8435453b | 4006 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
4007 | int idx = 0; |
4008 | ||
4009 | /* Skip any earlier lines, and any end-of-sequence marker | |
4010 | from a previous function. */ | |
4011 | while (linetable->item[idx].pc != prologue_sal.pc | |
4012 | || linetable->item[idx].line == 0) | |
4013 | idx++; | |
4014 | ||
4015 | if (idx+1 < linetable->nitems | |
4016 | && linetable->item[idx+1].line != 0 | |
4017 | && linetable->item[idx+1].pc == start_pc) | |
4018 | return start_pc; | |
4019 | } | |
4020 | ||
4021 | /* If there is only one sal that covers the entire function, | |
4022 | then it is probably a single line function, like | |
4023 | "foo(){}". */ | |
4024 | if (prologue_sal.end >= end_pc) | |
4025 | return 0; | |
4026 | ||
4027 | while (prologue_sal.end < end_pc) | |
4028 | { | |
4029 | struct symtab_and_line sal; | |
4030 | ||
4031 | sal = find_pc_line (prologue_sal.end, 0); | |
4032 | if (sal.line == 0) | |
4033 | break; | |
4034 | /* Assume that a consecutive SAL for the same (or larger) | |
4035 | line mark the prologue -> body transition. */ | |
4036 | if (sal.line >= prologue_sal.line) | |
4037 | break; | |
4038 | /* Likewise if we are in a different symtab altogether | |
4039 | (e.g. within a file included via #include). */ | |
4040 | if (sal.symtab != prologue_sal.symtab) | |
4041 | break; | |
4042 | ||
4043 | /* The line number is smaller. Check that it's from the | |
4044 | same function, not something inlined. If it's inlined, | |
4045 | then there is no point comparing the line numbers. */ | |
4046 | bl = block_for_pc (prologue_sal.end); | |
4047 | while (bl) | |
4048 | { | |
4049 | if (block_inlined_p (bl)) | |
4050 | break; | |
4051 | if (BLOCK_FUNCTION (bl)) | |
4052 | { | |
4053 | bl = NULL; | |
4054 | break; | |
4055 | } | |
4056 | bl = BLOCK_SUPERBLOCK (bl); | |
4057 | } | |
4058 | if (bl != NULL) | |
4059 | break; | |
4060 | ||
4061 | /* The case in which compiler's optimizer/scheduler has | |
4062 | moved instructions into the prologue. We look ahead in | |
4063 | the function looking for address ranges whose | |
4064 | corresponding line number is less the first one that we | |
4065 | found for the function. This is more conservative then | |
4066 | refine_prologue_limit which scans a large number of SALs | |
4067 | looking for any in the prologue. */ | |
4068 | prologue_sal = sal; | |
4069 | } | |
4070 | } | |
4071 | ||
4072 | if (prologue_sal.end < end_pc) | |
4073 | /* Return the end of this line, or zero if we could not find a | |
4074 | line. */ | |
4075 | return prologue_sal.end; | |
4076 | else | |
4077 | /* Don't return END_PC, which is past the end of the function. */ | |
4078 | return prologue_sal.pc; | |
4079 | } | |
bf223d3e PA |
4080 | |
4081 | /* See symtab.h. */ | |
4082 | ||
4083 | symbol * | |
4084 | find_function_alias_target (bound_minimal_symbol msymbol) | |
4085 | { | |
4024cf2b PA |
4086 | CORE_ADDR func_addr; |
4087 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
4088 | return NULL; |
4089 | ||
4024cf2b | 4090 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
4091 | if (sym != NULL |
4092 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 4093 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
4094 | return sym; |
4095 | ||
4096 | return NULL; | |
4097 | } | |
4098 | ||
f1f58506 | 4099 | \f |
c906108c SS |
4100 | /* If P is of the form "operator[ \t]+..." where `...' is |
4101 | some legitimate operator text, return a pointer to the | |
4102 | beginning of the substring of the operator text. | |
4103 | Otherwise, return "". */ | |
eca864fe | 4104 | |
96142726 TT |
4105 | static const char * |
4106 | operator_chars (const char *p, const char **end) | |
c906108c SS |
4107 | { |
4108 | *end = ""; | |
8090b426 | 4109 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 4110 | return *end; |
8090b426 | 4111 | p += CP_OPERATOR_LEN; |
c906108c SS |
4112 | |
4113 | /* Don't get faked out by `operator' being part of a longer | |
4114 | identifier. */ | |
c5aa993b | 4115 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4116 | return *end; |
4117 | ||
4118 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4119 | while (*p == ' ' || *p == '\t') | |
4120 | p++; | |
4121 | ||
c378eb4e | 4122 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4123 | |
c5aa993b | 4124 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4125 | { |
96142726 | 4126 | const char *q = p + 1; |
433759f7 | 4127 | |
c5aa993b | 4128 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4129 | q++; |
4130 | *end = q; | |
4131 | return p; | |
4132 | } | |
4133 | ||
53e8ad3d MS |
4134 | while (*p) |
4135 | switch (*p) | |
4136 | { | |
4137 | case '\\': /* regexp quoting */ | |
4138 | if (p[1] == '*') | |
4139 | { | |
3e43a32a | 4140 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4141 | *end = p + 3; |
4142 | else /* 'operator\*' */ | |
4143 | *end = p + 2; | |
4144 | return p; | |
4145 | } | |
4146 | else if (p[1] == '[') | |
4147 | { | |
4148 | if (p[2] == ']') | |
3e43a32a MS |
4149 | error (_("mismatched quoting on brackets, " |
4150 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4151 | else if (p[2] == '\\' && p[3] == ']') |
4152 | { | |
4153 | *end = p + 4; /* 'operator\[\]' */ | |
4154 | return p; | |
4155 | } | |
4156 | else | |
8a3fe4f8 | 4157 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4158 | } |
9af17804 | 4159 | else |
53e8ad3d | 4160 | { |
85102364 | 4161 | /* Gratuitous quote: skip it and move on. */ |
53e8ad3d MS |
4162 | p++; |
4163 | continue; | |
4164 | } | |
4165 | break; | |
4166 | case '!': | |
4167 | case '=': | |
4168 | case '*': | |
4169 | case '/': | |
4170 | case '%': | |
4171 | case '^': | |
4172 | if (p[1] == '=') | |
4173 | *end = p + 2; | |
4174 | else | |
4175 | *end = p + 1; | |
4176 | return p; | |
4177 | case '<': | |
4178 | case '>': | |
4179 | case '+': | |
4180 | case '-': | |
4181 | case '&': | |
4182 | case '|': | |
4183 | if (p[0] == '-' && p[1] == '>') | |
4184 | { | |
c378eb4e | 4185 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4186 | if (p[2] == '*') |
4187 | { | |
4188 | *end = p + 3; /* 'operator->*' */ | |
4189 | return p; | |
4190 | } | |
4191 | else if (p[2] == '\\') | |
4192 | { | |
4193 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4194 | return p; | |
4195 | } | |
4196 | else | |
4197 | { | |
4198 | *end = p + 2; /* 'operator->' */ | |
4199 | return p; | |
4200 | } | |
4201 | } | |
4202 | if (p[1] == '=' || p[1] == p[0]) | |
4203 | *end = p + 2; | |
4204 | else | |
4205 | *end = p + 1; | |
4206 | return p; | |
4207 | case '~': | |
4208 | case ',': | |
c5aa993b | 4209 | *end = p + 1; |
53e8ad3d MS |
4210 | return p; |
4211 | case '(': | |
4212 | if (p[1] != ')') | |
3e43a32a MS |
4213 | error (_("`operator ()' must be specified " |
4214 | "without whitespace in `()'")); | |
c5aa993b | 4215 | *end = p + 2; |
53e8ad3d MS |
4216 | return p; |
4217 | case '?': | |
4218 | if (p[1] != ':') | |
3e43a32a MS |
4219 | error (_("`operator ?:' must be specified " |
4220 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4221 | *end = p + 2; |
4222 | return p; | |
4223 | case '[': | |
4224 | if (p[1] != ']') | |
3e43a32a MS |
4225 | error (_("`operator []' must be specified " |
4226 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4227 | *end = p + 2; |
4228 | return p; | |
4229 | default: | |
8a3fe4f8 | 4230 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4231 | break; |
4232 | } | |
4233 | ||
c906108c SS |
4234 | *end = ""; |
4235 | return *end; | |
4236 | } | |
c906108c | 4237 | \f |
c5aa993b | 4238 | |
28cd9371 PW |
4239 | /* What part to match in a file name. */ |
4240 | ||
4241 | struct filename_partial_match_opts | |
4242 | { | |
4243 | /* Only match the directory name part. */ | |
491144b5 | 4244 | bool dirname = false; |
28cd9371 PW |
4245 | |
4246 | /* Only match the basename part. */ | |
491144b5 | 4247 | bool basename = false; |
28cd9371 PW |
4248 | }; |
4249 | ||
9fdc877b DE |
4250 | /* Data structure to maintain printing state for output_source_filename. */ |
4251 | ||
4252 | struct output_source_filename_data | |
4253 | { | |
28cd9371 PW |
4254 | /* Output only filenames matching REGEXP. */ |
4255 | std::string regexp; | |
4256 | gdb::optional<compiled_regex> c_regexp; | |
4257 | /* Possibly only match a part of the filename. */ | |
4258 | filename_partial_match_opts partial_match; | |
4259 | ||
4260 | ||
9fdc877b DE |
4261 | /* Cache of what we've seen so far. */ |
4262 | struct filename_seen_cache *filename_seen_cache; | |
4263 | ||
4264 | /* Flag of whether we're printing the first one. */ | |
4265 | int first; | |
4266 | }; | |
4267 | ||
c94fdfd0 | 4268 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4269 | NAME is the name to print. |
4270 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4271 | |
c94fdfd0 | 4272 | static void |
9fdc877b DE |
4273 | output_source_filename (const char *name, |
4274 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4275 | { |
4276 | /* Since a single source file can result in several partial symbol | |
4277 | tables, we need to avoid printing it more than once. Note: if | |
4278 | some of the psymtabs are read in and some are not, it gets | |
4279 | printed both under "Source files for which symbols have been | |
4280 | read" and "Source files for which symbols will be read in on | |
4281 | demand". I consider this a reasonable way to deal with the | |
4282 | situation. I'm not sure whether this can also happen for | |
4283 | symtabs; it doesn't hurt to check. */ | |
4284 | ||
4285 | /* Was NAME already seen? */ | |
bbf2f4df | 4286 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4287 | { |
4288 | /* Yes; don't print it again. */ | |
4289 | return; | |
4290 | } | |
9fdc877b | 4291 | |
28cd9371 PW |
4292 | /* Does it match data->regexp? */ |
4293 | if (data->c_regexp.has_value ()) | |
4294 | { | |
4295 | const char *to_match; | |
4296 | std::string dirname; | |
4297 | ||
4298 | if (data->partial_match.dirname) | |
4299 | { | |
4300 | dirname = ldirname (name); | |
4301 | to_match = dirname.c_str (); | |
4302 | } | |
4303 | else if (data->partial_match.basename) | |
4304 | to_match = lbasename (name); | |
4305 | else | |
4306 | to_match = name; | |
4307 | ||
4308 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4309 | return; | |
4310 | } | |
4311 | ||
4312 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4313 | if (! data->first) |
4314 | printf_filtered (", "); | |
4315 | data->first = 0; | |
c906108c SS |
4316 | |
4317 | wrap_here (""); | |
1ed9f74e | 4318 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4319 | } |
c906108c | 4320 | |
ccefe4c4 | 4321 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4322 | |
ccefe4c4 | 4323 | static void |
533a737e | 4324 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4325 | void *data) |
4326 | { | |
19ba03f4 SM |
4327 | output_source_filename (fullname ? fullname : filename, |
4328 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4329 | } |
4330 | ||
28cd9371 PW |
4331 | using isrc_flag_option_def |
4332 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4333 | ||
4334 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4335 | ||
4336 | isrc_flag_option_def { | |
4337 | "dirname", | |
4338 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4339 | N_("Show only the files having a dirname matching REGEXP."), | |
4340 | }, | |
4341 | ||
4342 | isrc_flag_option_def { | |
4343 | "basename", | |
4344 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4345 | N_("Show only the files having a basename matching REGEXP."), | |
4346 | }, | |
4347 | ||
4348 | }; | |
4349 | ||
4350 | /* Create an option_def_group for the "info sources" options, with | |
4351 | ISRC_OPTS as context. */ | |
4352 | ||
4353 | static inline gdb::option::option_def_group | |
4354 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4355 | { | |
4356 | return {{info_sources_option_defs}, isrc_opts}; | |
4357 | } | |
4358 | ||
4359 | /* Prints the header message for the source files that will be printed | |
4360 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4361 | that tells what will or has been done with the symbols of the | |
4362 | matching source files. */ | |
4363 | ||
c906108c | 4364 | static void |
28cd9371 PW |
4365 | print_info_sources_header (const char *symbol_msg, |
4366 | const struct output_source_filename_data *data) | |
4367 | { | |
4368 | puts_filtered (symbol_msg); | |
4369 | if (!data->regexp.empty ()) | |
4370 | { | |
4371 | if (data->partial_match.dirname) | |
4372 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4373 | data->regexp.c_str ()); | |
4374 | else if (data->partial_match.basename) | |
4375 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4376 | data->regexp.c_str ()); | |
4377 | else | |
4378 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4379 | data->regexp.c_str ()); | |
4380 | } | |
4381 | puts_filtered ("\n"); | |
4382 | } | |
4383 | ||
4384 | /* Completer for "info sources". */ | |
4385 | ||
4386 | static void | |
4387 | info_sources_command_completer (cmd_list_element *ignore, | |
4388 | completion_tracker &tracker, | |
4389 | const char *text, const char *word) | |
4390 | { | |
4391 | const auto group = make_info_sources_options_def_group (nullptr); | |
4392 | if (gdb::option::complete_options | |
4393 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4394 | return; | |
4395 | } | |
4396 | ||
4397 | static void | |
4398 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4399 | { |
9fdc877b | 4400 | struct output_source_filename_data data; |
c5aa993b | 4401 | |
c906108c SS |
4402 | if (!have_full_symbols () && !have_partial_symbols ()) |
4403 | { | |
8a3fe4f8 | 4404 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4405 | } |
c5aa993b | 4406 | |
bbf2f4df PA |
4407 | filename_seen_cache filenames_seen; |
4408 | ||
28cd9371 PW |
4409 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4410 | ||
4411 | gdb::option::process_options | |
4412 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4413 | |
28cd9371 PW |
4414 | if (args != NULL && *args != '\000') |
4415 | data.regexp = args; | |
c906108c | 4416 | |
28cd9371 | 4417 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4418 | data.first = 1; |
28cd9371 PW |
4419 | |
4420 | if (data.partial_match.dirname && data.partial_match.basename) | |
4421 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4422 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4423 | && data.regexp.empty ()) | |
4424 | error (_("Missing REGEXP for 'info sources'.")); | |
4425 | ||
4426 | if (data.regexp.empty ()) | |
4427 | data.c_regexp.reset (); | |
4428 | else | |
4429 | { | |
4430 | int cflags = REG_NOSUB; | |
4431 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4432 | cflags |= REG_ICASE; | |
4433 | #endif | |
4434 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4435 | _("Invalid regexp")); | |
4436 | } | |
4437 | ||
4438 | print_info_sources_header | |
4439 | (_("Source files for which symbols have been read in:\n"), &data); | |
4440 | ||
2030c079 | 4441 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4442 | { |
b669c953 | 4443 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4444 | { |
4445 | for (symtab *s : compunit_filetabs (cu)) | |
4446 | { | |
4447 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4448 | |
8b31193a TT |
4449 | output_source_filename (fullname, &data); |
4450 | } | |
4451 | } | |
4452 | } | |
c906108c | 4453 | printf_filtered ("\n\n"); |
c5aa993b | 4454 | |
28cd9371 PW |
4455 | print_info_sources_header |
4456 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4457 | |
bbf2f4df | 4458 | filenames_seen.clear (); |
9fdc877b | 4459 | data.first = 1; |
bb4142cf DE |
4460 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4461 | 1 /*need_fullname*/); | |
c906108c SS |
4462 | printf_filtered ("\n"); |
4463 | } | |
4464 | ||
470c0b1c AB |
4465 | /* Compare FILE against all the entries of FILENAMES. If BASENAMES is |
4466 | true compare only lbasename of FILENAMES. */ | |
fbd9ab74 | 4467 | |
470c0b1c AB |
4468 | static bool |
4469 | file_matches (const char *file, const std::vector<const char *> &filenames, | |
4470 | bool basenames) | |
c906108c | 4471 | { |
470c0b1c AB |
4472 | if (filenames.empty ()) |
4473 | return true; | |
c906108c | 4474 | |
470c0b1c | 4475 | for (const char *name : filenames) |
c906108c | 4476 | { |
470c0b1c AB |
4477 | name = (basenames ? lbasename (name) : name); |
4478 | if (compare_filenames_for_search (file, name)) | |
4479 | return true; | |
c906108c | 4480 | } |
470c0b1c AB |
4481 | |
4482 | return false; | |
c906108c SS |
4483 | } |
4484 | ||
f97a63c5 AB |
4485 | /* Helper function for std::sort on symbol_search objects. Can only sort |
4486 | symbols, not minimal symbols. */ | |
eca864fe | 4487 | |
b9c04fb2 TT |
4488 | int |
4489 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4490 | const symbol_search &sym_b) | |
434d2d4f | 4491 | { |
b52109bc DE |
4492 | int c; |
4493 | ||
b9c04fb2 TT |
4494 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4495 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4496 | if (c != 0) |
4497 | return c; | |
434d2d4f | 4498 | |
b9c04fb2 TT |
4499 | if (sym_a.block != sym_b.block) |
4500 | return sym_a.block - sym_b.block; | |
b52109bc | 4501 | |
987012b8 | 4502 | return strcmp (sym_a.symbol->print_name (), sym_b.symbol->print_name ()); |
434d2d4f DJ |
4503 | } |
4504 | ||
12615cba PW |
4505 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4506 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4507 | ||
4508 | bool | |
4509 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4510 | const struct symbol *sym) | |
4511 | { | |
4512 | struct type *sym_type; | |
4513 | std::string printed_sym_type_name; | |
4514 | ||
4515 | if (symbol_lookup_debug > 1) | |
4516 | { | |
4517 | fprintf_unfiltered (gdb_stdlog, | |
4518 | "treg_matches_sym_type_name\n sym %s\n", | |
987012b8 | 4519 | sym->natural_name ()); |
12615cba PW |
4520 | } |
4521 | ||
4522 | sym_type = SYMBOL_TYPE (sym); | |
4523 | if (sym_type == NULL) | |
4524 | return false; | |
4525 | ||
43d397ca PW |
4526 | { |
4527 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4528 | |
12615cba | 4529 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4530 | } |
4531 | ||
12615cba PW |
4532 | |
4533 | if (symbol_lookup_debug > 1) | |
4534 | { | |
4535 | fprintf_unfiltered (gdb_stdlog, | |
4536 | " sym_type_name %s\n", | |
4537 | printed_sym_type_name.c_str ()); | |
4538 | } | |
4539 | ||
4540 | ||
4541 | if (printed_sym_type_name.empty ()) | |
4542 | return false; | |
4543 | ||
4544 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4545 | } | |
4546 | ||
f97a63c5 AB |
4547 | /* See symtab.h. */ |
4548 | ||
4549 | bool | |
4550 | global_symbol_searcher::is_suitable_msymbol | |
4551 | (const enum search_domain kind, const minimal_symbol *msymbol) | |
4552 | { | |
4553 | switch (MSYMBOL_TYPE (msymbol)) | |
4554 | { | |
4555 | case mst_data: | |
4556 | case mst_bss: | |
4557 | case mst_file_data: | |
4558 | case mst_file_bss: | |
4559 | return kind == VARIABLES_DOMAIN; | |
4560 | case mst_text: | |
4561 | case mst_file_text: | |
4562 | case mst_solib_trampoline: | |
4563 | case mst_text_gnu_ifunc: | |
4564 | return kind == FUNCTIONS_DOMAIN; | |
4565 | default: | |
4566 | return false; | |
4567 | } | |
4568 | } | |
4569 | ||
4570 | /* See symtab.h. */ | |
4571 | ||
4572 | bool | |
4573 | global_symbol_searcher::expand_symtabs | |
4574 | (objfile *objfile, const gdb::optional<compiled_regex> &preg) const | |
4575 | { | |
4576 | enum search_domain kind = m_kind; | |
4577 | bool found_msymbol = false; | |
4578 | ||
4579 | if (objfile->sf) | |
4580 | objfile->sf->qf->expand_symtabs_matching | |
4581 | (objfile, | |
4582 | [&] (const char *filename, bool basenames) | |
4583 | { | |
4584 | return file_matches (filename, filenames, basenames); | |
4585 | }, | |
c1a66c06 | 4586 | &lookup_name_info::match_any (), |
f97a63c5 AB |
4587 | [&] (const char *symname) |
4588 | { | |
4589 | return (!preg.has_value () | |
4590 | || preg->exec (symname, 0, NULL, 0) == 0); | |
4591 | }, | |
4592 | NULL, | |
4593 | kind); | |
4594 | ||
4595 | /* Here, we search through the minimal symbol tables for functions and | |
4596 | variables that match, and force their symbols to be read. This is in | |
4597 | particular necessary for demangled variable names, which are no longer | |
4598 | put into the partial symbol tables. The symbol will then be found | |
4599 | during the scan of symtabs later. | |
4600 | ||
4601 | For functions, find_pc_symtab should succeed if we have debug info for | |
4602 | the function, for variables we have to call | |
4603 | lookup_symbol_in_objfile_from_linkage_name to determine if the | |
4604 | variable has debug info. If the lookup fails, set found_msymbol so | |
4605 | that we will rescan to print any matching symbols without debug info. | |
4606 | We only search the objfile the msymbol came from, we no longer search | |
4607 | all objfiles. In large programs (1000s of shared libs) searching all | |
4608 | objfiles is not worth the pain. */ | |
4609 | if (filenames.empty () | |
4610 | && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) | |
4611 | { | |
4612 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
4613 | { | |
4614 | QUIT; | |
4615 | ||
4616 | if (msymbol->created_by_gdb) | |
4617 | continue; | |
4618 | ||
4619 | if (is_suitable_msymbol (kind, msymbol)) | |
4620 | { | |
4621 | if (!preg.has_value () | |
4622 | || preg->exec (msymbol->natural_name (), 0, | |
4623 | NULL, 0) == 0) | |
4624 | { | |
4625 | /* An important side-effect of these lookup functions is | |
4626 | to expand the symbol table if msymbol is found, later | |
4627 | in the process we will add matching symbols or | |
4628 | msymbols to the results list, and that requires that | |
4629 | the symbols tables are expanded. */ | |
4630 | if (kind == FUNCTIONS_DOMAIN | |
4631 | ? (find_pc_compunit_symtab | |
4632 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4633 | == NULL) | |
4634 | : (lookup_symbol_in_objfile_from_linkage_name | |
4635 | (objfile, msymbol->linkage_name (), | |
4636 | VAR_DOMAIN) | |
4637 | .symbol == NULL)) | |
4638 | found_msymbol = true; | |
4639 | } | |
4640 | } | |
4641 | } | |
4642 | } | |
4643 | ||
4644 | return found_msymbol; | |
4645 | } | |
4646 | ||
4647 | /* See symtab.h. */ | |
4648 | ||
c2512106 | 4649 | bool |
f97a63c5 AB |
4650 | global_symbol_searcher::add_matching_symbols |
4651 | (objfile *objfile, | |
4652 | const gdb::optional<compiled_regex> &preg, | |
4653 | const gdb::optional<compiled_regex> &treg, | |
c2512106 | 4654 | std::set<symbol_search> *result_set) const |
f97a63c5 AB |
4655 | { |
4656 | enum search_domain kind = m_kind; | |
4657 | ||
4658 | /* Add matching symbols (if not already present). */ | |
4659 | for (compunit_symtab *cust : objfile->compunits ()) | |
4660 | { | |
4661 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (cust); | |
4662 | ||
4663 | for (block_enum block : { GLOBAL_BLOCK, STATIC_BLOCK }) | |
4664 | { | |
4665 | struct block_iterator iter; | |
4666 | struct symbol *sym; | |
4667 | const struct block *b = BLOCKVECTOR_BLOCK (bv, block); | |
4668 | ||
4669 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4670 | { | |
4671 | struct symtab *real_symtab = symbol_symtab (sym); | |
4672 | ||
4673 | QUIT; | |
4674 | ||
4675 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4676 | not need to be a substring of symtab_to_fullname as | |
4677 | it may contain "./" etc. */ | |
4678 | if ((file_matches (real_symtab->filename, filenames, false) | |
4679 | || ((basenames_may_differ | |
4680 | || file_matches (lbasename (real_symtab->filename), | |
4681 | filenames, true)) | |
4682 | && file_matches (symtab_to_fullname (real_symtab), | |
4683 | filenames, false))) | |
4684 | && ((!preg.has_value () | |
4685 | || preg->exec (sym->natural_name (), 0, | |
4686 | NULL, 0) == 0) | |
4687 | && ((kind == VARIABLES_DOMAIN | |
4688 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4689 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4690 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4691 | /* LOC_CONST can be used for more than | |
4692 | just enums, e.g., c++ static const | |
4693 | members. We only want to skip enums | |
4694 | here. */ | |
4695 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
78134374 | 4696 | && (SYMBOL_TYPE (sym)->code () |
f97a63c5 AB |
4697 | == TYPE_CODE_ENUM)) |
4698 | && (!treg.has_value () | |
4699 | || treg_matches_sym_type_name (*treg, sym))) | |
4700 | || (kind == FUNCTIONS_DOMAIN | |
4701 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4702 | && (!treg.has_value () | |
4703 | || treg_matches_sym_type_name (*treg, | |
4704 | sym))) | |
4705 | || (kind == TYPES_DOMAIN | |
4706 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
4707 | && SYMBOL_DOMAIN (sym) != MODULE_DOMAIN) | |
4708 | || (kind == MODULES_DOMAIN | |
4709 | && SYMBOL_DOMAIN (sym) == MODULE_DOMAIN | |
4710 | && SYMBOL_LINE (sym) != 0)))) | |
4711 | { | |
c2512106 AB |
4712 | if (result_set->size () < m_max_search_results) |
4713 | { | |
4714 | /* Match, insert if not already in the results. */ | |
4715 | symbol_search ss (block, sym); | |
4716 | if (result_set->find (ss) == result_set->end ()) | |
4717 | result_set->insert (ss); | |
4718 | } | |
4719 | else | |
4720 | return false; | |
f97a63c5 AB |
4721 | } |
4722 | } | |
4723 | } | |
4724 | } | |
c2512106 AB |
4725 | |
4726 | return true; | |
f97a63c5 AB |
4727 | } |
4728 | ||
4729 | /* See symtab.h. */ | |
4730 | ||
c2512106 | 4731 | bool |
f97a63c5 AB |
4732 | global_symbol_searcher::add_matching_msymbols |
4733 | (objfile *objfile, const gdb::optional<compiled_regex> &preg, | |
4734 | std::vector<symbol_search> *results) const | |
4735 | { | |
4736 | enum search_domain kind = m_kind; | |
4737 | ||
4738 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
4739 | { | |
4740 | QUIT; | |
4741 | ||
4742 | if (msymbol->created_by_gdb) | |
4743 | continue; | |
4744 | ||
4745 | if (is_suitable_msymbol (kind, msymbol)) | |
4746 | { | |
4747 | if (!preg.has_value () | |
4748 | || preg->exec (msymbol->natural_name (), 0, | |
4749 | NULL, 0) == 0) | |
4750 | { | |
4751 | /* For functions we can do a quick check of whether the | |
4752 | symbol might be found via find_pc_symtab. */ | |
4753 | if (kind != FUNCTIONS_DOMAIN | |
4754 | || (find_pc_compunit_symtab | |
4755 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4756 | == NULL)) | |
4757 | { | |
4758 | if (lookup_symbol_in_objfile_from_linkage_name | |
4759 | (objfile, msymbol->linkage_name (), | |
4760 | VAR_DOMAIN).symbol == NULL) | |
4761 | { | |
4762 | /* Matching msymbol, add it to the results list. */ | |
c2512106 AB |
4763 | if (results->size () < m_max_search_results) |
4764 | results->emplace_back (GLOBAL_BLOCK, msymbol, objfile); | |
4765 | else | |
4766 | return false; | |
f97a63c5 AB |
4767 | } |
4768 | } | |
4769 | } | |
4770 | } | |
4771 | } | |
12615cba | 4772 | |
c2512106 | 4773 | return true; |
434d2d4f | 4774 | } |
5bd98722 | 4775 | |
470c0b1c | 4776 | /* See symtab.h. */ |
c378eb4e | 4777 | |
b9c04fb2 | 4778 | std::vector<symbol_search> |
470c0b1c | 4779 | global_symbol_searcher::search () const |
c906108c | 4780 | { |
2d7cc5c7 | 4781 | gdb::optional<compiled_regex> preg; |
12615cba | 4782 | gdb::optional<compiled_regex> treg; |
c906108c | 4783 | |
470c0b1c | 4784 | gdb_assert (m_kind != ALL_DOMAIN); |
e8930875 | 4785 | |
470c0b1c | 4786 | if (m_symbol_name_regexp != NULL) |
c906108c | 4787 | { |
470c0b1c AB |
4788 | const char *symbol_name_regexp = m_symbol_name_regexp; |
4789 | ||
c906108c | 4790 | /* Make sure spacing is right for C++ operators. |
dda83cd7 SM |
4791 | This is just a courtesy to make the matching less sensitive |
4792 | to how many spaces the user leaves between 'operator' | |
4793 | and <TYPENAME> or <OPERATOR>. */ | |
96142726 | 4794 | const char *opend; |
470c0b1c | 4795 | const char *opname = operator_chars (symbol_name_regexp, &opend); |
433759f7 | 4796 | |
c906108c | 4797 | if (*opname) |
c5aa993b | 4798 | { |
3e43a32a | 4799 | int fix = -1; /* -1 means ok; otherwise number of |
dda83cd7 | 4800 | spaces needed. */ |
433759f7 | 4801 | |
c5aa993b JM |
4802 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4803 | { | |
c378eb4e | 4804 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4805 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4806 | fix = 1; | |
4807 | } | |
4808 | else | |
4809 | { | |
c378eb4e | 4810 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4811 | if (opname[-1] == ' ') |
4812 | fix = 0; | |
4813 | } | |
c378eb4e | 4814 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4815 | if (fix >= 0) |
4816 | { | |
045f55a6 | 4817 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4818 | |
c5aa993b | 4819 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
470c0b1c | 4820 | symbol_name_regexp = tmp; |
c5aa993b JM |
4821 | } |
4822 | } | |
4823 | ||
2d7cc5c7 PA |
4824 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4825 | ? REG_ICASE : 0); | |
470c0b1c AB |
4826 | preg.emplace (symbol_name_regexp, cflags, |
4827 | _("Invalid regexp")); | |
c906108c SS |
4828 | } |
4829 | ||
470c0b1c | 4830 | if (m_symbol_type_regexp != NULL) |
12615cba PW |
4831 | { |
4832 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4833 | ? REG_ICASE : 0); | |
470c0b1c AB |
4834 | treg.emplace (m_symbol_type_regexp, cflags, |
4835 | _("Invalid regexp")); | |
12615cba PW |
4836 | } |
4837 | ||
f97a63c5 | 4838 | bool found_msymbol = false; |
c2512106 | 4839 | std::set<symbol_search> result_set; |
2030c079 | 4840 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4841 | { |
f97a63c5 AB |
4842 | /* Expand symtabs within objfile that possibly contain matching |
4843 | symbols. */ | |
4844 | found_msymbol |= expand_symtabs (objfile, preg); | |
4845 | ||
c2512106 AB |
4846 | /* Find matching symbols within OBJFILE and add them in to the |
4847 | RESULT_SET set. Use a set here so that we can easily detect | |
4848 | duplicates as we go, and can therefore track how many unique | |
4849 | matches we have found so far. */ | |
4850 | if (!add_matching_symbols (objfile, preg, treg, &result_set)) | |
4851 | break; | |
d8aeb77f | 4852 | } |
c906108c | 4853 | |
c2512106 AB |
4854 | /* Convert the result set into a sorted result list, as std::set is |
4855 | defined to be sorted then no explicit call to std::sort is needed. */ | |
4856 | std::vector<symbol_search> result (result_set.begin (), result_set.end ()); | |
b52109bc | 4857 | |
470c0b1c | 4858 | /* If there are no debug symbols, then add matching minsyms. But if the |
f97a63c5 AB |
4859 | user wants to see symbols matching a type regexp, then never give a |
4860 | minimal symbol, as we assume that a minimal symbol does not have a | |
4861 | type. */ | |
4862 | if ((found_msymbol || (filenames.empty () && m_kind == VARIABLES_DOMAIN)) | |
470c0b1c | 4863 | && !m_exclude_minsyms |
a8462bbf | 4864 | && !treg.has_value ()) |
c906108c | 4865 | { |
f97a63c5 | 4866 | gdb_assert (m_kind == VARIABLES_DOMAIN || m_kind == FUNCTIONS_DOMAIN); |
2030c079 | 4867 | for (objfile *objfile : current_program_space->objfiles ()) |
c2512106 AB |
4868 | if (!add_matching_msymbols (objfile, preg, &result)) |
4869 | break; | |
c906108c SS |
4870 | } |
4871 | ||
b9c04fb2 | 4872 | return result; |
c906108c SS |
4873 | } |
4874 | ||
5f512a7d | 4875 | /* See symtab.h. */ |
c378eb4e | 4876 | |
5f512a7d AB |
4877 | std::string |
4878 | symbol_to_info_string (struct symbol *sym, int block, | |
4879 | enum search_domain kind) | |
c906108c | 4880 | { |
5f512a7d | 4881 | std::string str; |
05cba821 | 4882 | |
5f512a7d | 4883 | gdb_assert (block == GLOBAL_BLOCK || block == STATIC_BLOCK); |
b744723f | 4884 | |
176620f1 | 4885 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
5f512a7d | 4886 | str += "static "; |
c5aa993b | 4887 | |
c378eb4e | 4888 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4889 | if (kind == TYPES_DOMAIN |
4890 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 | 4891 | { |
5f512a7d AB |
4892 | string_file tmp_stream; |
4893 | ||
eb86c5e2 AB |
4894 | /* FIXME: For C (and C++) we end up with a difference in output here |
4895 | between how a typedef is printed, and non-typedefs are printed. | |
4896 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4897 | appear C-like, while TYPE_PRINT doesn't. | |
4898 | ||
4899 | For the struct printing case below, things are worse, we force | |
4900 | printing of the ";" in this function, which is going to be wrong | |
4901 | for languages that don't require a ";" between statements. */ | |
78134374 | 4902 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_TYPEDEF) |
5f512a7d | 4903 | typedef_print (SYMBOL_TYPE (sym), sym, &tmp_stream); |
eb86c5e2 | 4904 | else |
5f512a7d AB |
4905 | type_print (SYMBOL_TYPE (sym), "", &tmp_stream, -1); |
4906 | str += tmp_stream.string (); | |
eb86c5e2 | 4907 | } |
c378eb4e | 4908 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4909 | else if (kind < TYPES_DOMAIN |
4910 | || (kind == TYPES_DOMAIN | |
4911 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c | 4912 | { |
5f512a7d AB |
4913 | string_file tmp_stream; |
4914 | ||
c906108c | 4915 | type_print (SYMBOL_TYPE (sym), |
c5aa993b | 4916 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
987012b8 | 4917 | ? "" : sym->print_name ()), |
5f512a7d | 4918 | &tmp_stream, 0); |
c906108c | 4919 | |
5f512a7d AB |
4920 | str += tmp_stream.string (); |
4921 | str += ";"; | |
c906108c | 4922 | } |
59c35742 AB |
4923 | /* Printing of modules is currently done here, maybe at some future |
4924 | point we might want a language specific method to print the module | |
4925 | symbol so that we can customise the output more. */ | |
4926 | else if (kind == MODULES_DOMAIN) | |
5f512a7d AB |
4927 | str += sym->print_name (); |
4928 | ||
4929 | return str; | |
4930 | } | |
4931 | ||
4932 | /* Helper function for symbol info commands, for example 'info functions', | |
4933 | 'info variables', etc. KIND is the kind of symbol we searched for, and | |
4934 | BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK | |
4935 | or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL, | |
4936 | print file and line number information for the symbol as well. Skip | |
4937 | printing the filename if it matches LAST. */ | |
4938 | ||
4939 | static void | |
4940 | print_symbol_info (enum search_domain kind, | |
4941 | struct symbol *sym, | |
4942 | int block, const char *last) | |
4943 | { | |
4944 | scoped_switch_to_sym_language_if_auto l (sym); | |
4945 | struct symtab *s = symbol_symtab (sym); | |
4946 | ||
4947 | if (last != NULL) | |
4948 | { | |
4949 | const char *s_filename = symtab_to_filename_for_display (s); | |
4950 | ||
4951 | if (filename_cmp (last, s_filename) != 0) | |
4952 | { | |
4953 | printf_filtered (_("\nFile %ps:\n"), | |
4954 | styled_string (file_name_style.style (), | |
4955 | s_filename)); | |
4956 | } | |
4957 | ||
4958 | if (SYMBOL_LINE (sym) != 0) | |
4959 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4960 | else | |
4961 | puts_filtered ("\t"); | |
4962 | } | |
4963 | ||
4964 | std::string str = symbol_to_info_string (sym, block, kind); | |
4965 | printf_filtered ("%s\n", str.c_str ()); | |
c906108c SS |
4966 | } |
4967 | ||
4968 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4969 | for non-debugging symbols to gdb_stdout. */ |
4970 | ||
c906108c | 4971 | static void |
7c7b6655 | 4972 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4973 | { |
08feed99 | 4974 | struct gdbarch *gdbarch = msymbol.objfile->arch (); |
3ac4495a MS |
4975 | char *tmp; |
4976 | ||
d80b854b | 4977 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4978 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4979 | & (CORE_ADDR) 0xffffffff, |
4980 | 8); | |
3ac4495a | 4981 | else |
77e371c0 | 4982 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4983 | 16); |
6a831f06 PA |
4984 | |
4985 | ui_file_style sym_style = (msymbol.minsym->text_p () | |
4986 | ? function_name_style.style () | |
4987 | : ui_file_style ()); | |
4988 | ||
4989 | printf_filtered (_("%ps %ps\n"), | |
4990 | styled_string (address_style.style (), tmp), | |
c9d95fa3 | 4991 | styled_string (sym_style, msymbol.minsym->print_name ())); |
c906108c SS |
4992 | } |
4993 | ||
4994 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4995 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4996 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4997 | matches. */ |
4998 | ||
c906108c | 4999 | static void |
4acfdd20 | 5000 | symtab_symbol_info (bool quiet, bool exclude_minsyms, |
12615cba PW |
5001 | const char *regexp, enum search_domain kind, |
5002 | const char *t_regexp, int from_tty) | |
c906108c | 5003 | { |
bc043ef3 | 5004 | static const char * const classnames[] = |
59c35742 | 5005 | {"variable", "function", "type", "module"}; |
c7dcbf88 | 5006 | const char *last_filename = ""; |
c906108c SS |
5007 | int first = 1; |
5008 | ||
59c35742 | 5009 | gdb_assert (kind != ALL_DOMAIN); |
e8930875 | 5010 | |
b16507e0 AB |
5011 | if (regexp != nullptr && *regexp == '\0') |
5012 | regexp = nullptr; | |
5013 | ||
470c0b1c AB |
5014 | global_symbol_searcher spec (kind, regexp); |
5015 | spec.set_symbol_type_regexp (t_regexp); | |
5016 | spec.set_exclude_minsyms (exclude_minsyms); | |
5017 | std::vector<symbol_search> symbols = spec.search (); | |
c906108c | 5018 | |
12615cba PW |
5019 | if (!quiet) |
5020 | { | |
5021 | if (regexp != NULL) | |
5022 | { | |
5023 | if (t_regexp != NULL) | |
5024 | printf_filtered | |
5025 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 5026 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
5027 | classnames[kind], regexp, t_regexp); |
5028 | else | |
5029 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
5030 | classnames[kind], regexp); | |
5031 | } | |
5032 | else | |
5033 | { | |
5034 | if (t_regexp != NULL) | |
5035 | printf_filtered | |
5036 | (_("All defined %ss" | |
0c95f9ed | 5037 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
5038 | classnames[kind], t_regexp); |
5039 | else | |
5040 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
5041 | } | |
5042 | } | |
c906108c | 5043 | |
b9c04fb2 | 5044 | for (const symbol_search &p : symbols) |
c906108c SS |
5045 | { |
5046 | QUIT; | |
5047 | ||
b9c04fb2 | 5048 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
5049 | { |
5050 | if (first) | |
5051 | { | |
12615cba PW |
5052 | if (!quiet) |
5053 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
5054 | first = 0; |
5055 | } | |
b9c04fb2 | 5056 | print_msymbol_info (p.msymbol); |
c5aa993b | 5057 | } |
c906108c | 5058 | else |
c5aa993b JM |
5059 | { |
5060 | print_symbol_info (kind, | |
b9c04fb2 TT |
5061 | p.symbol, |
5062 | p.block, | |
c5aa993b | 5063 | last_filename); |
d01060f0 | 5064 | last_filename |
b9c04fb2 | 5065 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 5066 | } |
c906108c | 5067 | } |
c906108c SS |
5068 | } |
5069 | ||
4acfdd20 AB |
5070 | /* Structure to hold the values of the options used by the 'info variables' |
5071 | and 'info functions' commands. These correspond to the -q, -t, and -n | |
5072 | options. */ | |
5073 | ||
095252be | 5074 | struct info_vars_funcs_options |
4acfdd20 | 5075 | { |
491144b5 CB |
5076 | bool quiet = false; |
5077 | bool exclude_minsyms = false; | |
4acfdd20 AB |
5078 | char *type_regexp = nullptr; |
5079 | ||
095252be | 5080 | ~info_vars_funcs_options () |
4acfdd20 AB |
5081 | { |
5082 | xfree (type_regexp); | |
5083 | } | |
5084 | }; | |
5085 | ||
5086 | /* The options used by the 'info variables' and 'info functions' | |
5087 | commands. */ | |
5088 | ||
095252be AT |
5089 | static const gdb::option::option_def info_vars_funcs_options_defs[] = { |
5090 | gdb::option::boolean_option_def<info_vars_funcs_options> { | |
4acfdd20 | 5091 | "q", |
095252be | 5092 | [] (info_vars_funcs_options *opt) { return &opt->quiet; }, |
4acfdd20 AB |
5093 | nullptr, /* show_cmd_cb */ |
5094 | nullptr /* set_doc */ | |
5095 | }, | |
5096 | ||
095252be | 5097 | gdb::option::boolean_option_def<info_vars_funcs_options> { |
4acfdd20 | 5098 | "n", |
095252be | 5099 | [] (info_vars_funcs_options *opt) { return &opt->exclude_minsyms; }, |
4acfdd20 AB |
5100 | nullptr, /* show_cmd_cb */ |
5101 | nullptr /* set_doc */ | |
5102 | }, | |
5103 | ||
095252be | 5104 | gdb::option::string_option_def<info_vars_funcs_options> { |
4acfdd20 | 5105 | "t", |
095252be AT |
5106 | [] (info_vars_funcs_options *opt) { return &opt->type_regexp; |
5107 | }, | |
4acfdd20 AB |
5108 | nullptr, /* show_cmd_cb */ |
5109 | nullptr /* set_doc */ | |
5110 | } | |
5111 | }; | |
5112 | ||
5113 | /* Returns the option group used by 'info variables' and 'info | |
5114 | functions'. */ | |
5115 | ||
5116 | static gdb::option::option_def_group | |
095252be | 5117 | make_info_vars_funcs_options_def_group (info_vars_funcs_options *opts) |
4acfdd20 | 5118 | { |
095252be | 5119 | return {{info_vars_funcs_options_defs}, opts}; |
4acfdd20 AB |
5120 | } |
5121 | ||
5122 | /* Command completer for 'info variables' and 'info functions'. */ | |
5123 | ||
5124 | static void | |
095252be AT |
5125 | info_vars_funcs_command_completer (struct cmd_list_element *ignore, |
5126 | completion_tracker &tracker, | |
5127 | const char *text, const char * /* word */) | |
4acfdd20 AB |
5128 | { |
5129 | const auto group | |
095252be | 5130 | = make_info_vars_funcs_options_def_group (nullptr); |
4acfdd20 AB |
5131 | if (gdb::option::complete_options |
5132 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5133 | return; | |
5134 | ||
5135 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5136 | symbol_completer (ignore, tracker, text, word); | |
5137 | } | |
5138 | ||
b16507e0 AB |
5139 | /* Implement the 'info variables' command. */ |
5140 | ||
0b39b52e | 5141 | static void |
12615cba | 5142 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 5143 | { |
095252be AT |
5144 | info_vars_funcs_options opts; |
5145 | auto grp = make_info_vars_funcs_options_def_group (&opts); | |
4acfdd20 AB |
5146 | gdb::option::process_options |
5147 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5148 | if (args != nullptr && *args == '\0') | |
5149 | args = nullptr; | |
b16507e0 | 5150 | |
4acfdd20 | 5151 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, VARIABLES_DOMAIN, |
b16507e0 | 5152 | opts.type_regexp, from_tty); |
0b39b52e TT |
5153 | } |
5154 | ||
b16507e0 | 5155 | /* Implement the 'info functions' command. */ |
12615cba | 5156 | |
c906108c | 5157 | static void |
12615cba | 5158 | info_functions_command (const char *args, int from_tty) |
c906108c | 5159 | { |
095252be AT |
5160 | info_vars_funcs_options opts; |
5161 | ||
5162 | auto grp = make_info_vars_funcs_options_def_group (&opts); | |
4acfdd20 AB |
5163 | gdb::option::process_options |
5164 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5165 | if (args != nullptr && *args == '\0') | |
5166 | args = nullptr; | |
b16507e0 | 5167 | |
4acfdd20 AB |
5168 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, |
5169 | FUNCTIONS_DOMAIN, opts.type_regexp, from_tty); | |
c906108c SS |
5170 | } |
5171 | ||
a8eab7c6 AB |
5172 | /* Holds the -q option for the 'info types' command. */ |
5173 | ||
5174 | struct info_types_options | |
5175 | { | |
491144b5 | 5176 | bool quiet = false; |
a8eab7c6 AB |
5177 | }; |
5178 | ||
5179 | /* The options used by the 'info types' command. */ | |
5180 | ||
5181 | static const gdb::option::option_def info_types_options_defs[] = { | |
5182 | gdb::option::boolean_option_def<info_types_options> { | |
5183 | "q", | |
5184 | [] (info_types_options *opt) { return &opt->quiet; }, | |
5185 | nullptr, /* show_cmd_cb */ | |
5186 | nullptr /* set_doc */ | |
5187 | } | |
5188 | }; | |
5189 | ||
5190 | /* Returns the option group used by 'info types'. */ | |
5191 | ||
5192 | static gdb::option::option_def_group | |
5193 | make_info_types_options_def_group (info_types_options *opts) | |
5194 | { | |
5195 | return {{info_types_options_defs}, opts}; | |
5196 | } | |
5197 | ||
5198 | /* Implement the 'info types' command. */ | |
357e46e7 | 5199 | |
c906108c | 5200 | static void |
a8eab7c6 | 5201 | info_types_command (const char *args, int from_tty) |
c906108c | 5202 | { |
a8eab7c6 AB |
5203 | info_types_options opts; |
5204 | ||
5205 | auto grp = make_info_types_options_def_group (&opts); | |
5206 | gdb::option::process_options | |
5207 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5208 | if (args != nullptr && *args == '\0') | |
5209 | args = nullptr; | |
4acfdd20 | 5210 | symtab_symbol_info (opts.quiet, false, args, TYPES_DOMAIN, NULL, from_tty); |
a8eab7c6 AB |
5211 | } |
5212 | ||
5213 | /* Command completer for 'info types' command. */ | |
5214 | ||
5215 | static void | |
5216 | info_types_command_completer (struct cmd_list_element *ignore, | |
5217 | completion_tracker &tracker, | |
5218 | const char *text, const char * /* word */) | |
5219 | { | |
5220 | const auto group | |
5221 | = make_info_types_options_def_group (nullptr); | |
5222 | if (gdb::option::complete_options | |
5223 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5224 | return; | |
5225 | ||
5226 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5227 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
5228 | } |
5229 | ||
59c35742 AB |
5230 | /* Implement the 'info modules' command. */ |
5231 | ||
5232 | static void | |
5233 | info_modules_command (const char *args, int from_tty) | |
5234 | { | |
5235 | info_types_options opts; | |
5236 | ||
5237 | auto grp = make_info_types_options_def_group (&opts); | |
5238 | gdb::option::process_options | |
5239 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5240 | if (args != nullptr && *args == '\0') | |
5241 | args = nullptr; | |
5242 | symtab_symbol_info (opts.quiet, true, args, MODULES_DOMAIN, NULL, | |
5243 | from_tty); | |
5244 | } | |
5245 | ||
c906108c | 5246 | static void |
0b39b52e | 5247 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 5248 | { |
c80049d3 | 5249 | std::string string; |
470c0b1c | 5250 | const char *file_name = nullptr; |
c906108c | 5251 | |
470c0b1c | 5252 | if (regexp != nullptr) |
8bd10a10 | 5253 | { |
0b39b52e | 5254 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5255 | |
2c074f49 HD |
5256 | /* Ignore the colon if it is part of a Windows drive. */ |
5257 | if (HAS_DRIVE_SPEC (regexp) | |
5258 | && (regexp[2] == '/' || regexp[2] == '\\')) | |
5259 | colon = strchr (STRIP_DRIVE_SPEC (regexp), ':'); | |
5260 | ||
8bd10a10 CM |
5261 | if (colon && *(colon + 1) != ':') |
5262 | { | |
5263 | int colon_index; | |
96142726 | 5264 | char *local_name; |
8bd10a10 CM |
5265 | |
5266 | colon_index = colon - regexp; | |
224c3ddb | 5267 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5268 | memcpy (local_name, regexp, colon_index); |
5269 | local_name[colon_index--] = 0; | |
5270 | while (isspace (local_name[colon_index])) | |
5271 | local_name[colon_index--] = 0; | |
5272 | file_name = local_name; | |
529480d0 | 5273 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5274 | } |
5275 | } | |
5276 | ||
470c0b1c AB |
5277 | global_symbol_searcher spec (FUNCTIONS_DOMAIN, regexp); |
5278 | if (file_name != nullptr) | |
5279 | spec.filenames.push_back (file_name); | |
5280 | std::vector<symbol_search> symbols = spec.search (); | |
c906108c | 5281 | |
c80049d3 | 5282 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5283 | for (const symbol_search &p : symbols) |
c906108c | 5284 | { |
b9c04fb2 | 5285 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5286 | { |
b9c04fb2 | 5287 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5288 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5289 | |
c80049d3 | 5290 | string = string_printf ("%s:'%s'", fullname, |
987012b8 | 5291 | p.symbol->linkage_name ()); |
c80049d3 | 5292 | break_command (&string[0], from_tty); |
c7dcbf88 | 5293 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5294 | } |
c906108c | 5295 | else |
c5aa993b | 5296 | { |
c80049d3 | 5297 | string = string_printf ("'%s'", |
c9d95fa3 | 5298 | p.msymbol.minsym->linkage_name ()); |
6214f497 | 5299 | |
c80049d3 | 5300 | break_command (&string[0], from_tty); |
c5aa993b | 5301 | printf_filtered ("<function, no debug info> %s;\n", |
c9d95fa3 | 5302 | p.msymbol.minsym->print_name ()); |
c5aa993b | 5303 | } |
c906108c | 5304 | } |
c906108c | 5305 | } |
c906108c | 5306 | \f |
c5aa993b | 5307 | |
c62446b1 | 5308 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5309 | |
5310 | static int | |
c62446b1 | 5311 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5312 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5313 | completion_match_result &match_res) |
5314 | { | |
d4c2a405 | 5315 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5316 | |
b5ec771e | 5317 | symbol_name_matcher_ftype *name_match |
c9debfb9 | 5318 | = lang->get_symbol_name_matcher (lookup_name); |
1976171a | 5319 | |
a207cff2 | 5320 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5321 | } |
5322 | ||
b5ec771e | 5323 | /* See symtab.h. */ |
c906108c | 5324 | |
e08bd6c5 | 5325 | bool |
eb3ff9a5 | 5326 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5327 | language symbol_language, |
eb3ff9a5 | 5328 | const char *symname, |
b5ec771e | 5329 | const lookup_name_info &lookup_name, |
0d5cff50 | 5330 | const char *text, const char *word) |
c906108c | 5331 | { |
b5ec771e PA |
5332 | completion_match_result &match_res |
5333 | = tracker.reset_completion_match_result (); | |
5334 | ||
c378eb4e | 5335 | /* Clip symbols that cannot match. */ |
c62446b1 | 5336 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
e08bd6c5 | 5337 | return false; |
c906108c | 5338 | |
b5ec771e PA |
5339 | /* Refresh SYMNAME from the match string. It's potentially |
5340 | different depending on language. (E.g., on Ada, the match may be | |
5341 | the encoded symbol name wrapped in "<>"). */ | |
5342 | symname = match_res.match.match (); | |
5343 | gdb_assert (symname != NULL); | |
5344 | ||
c906108c | 5345 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5346 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5347 | |
5348 | { | |
60a20c19 PA |
5349 | gdb::unique_xmalloc_ptr<char> completion |
5350 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5351 | |
a207cff2 PA |
5352 | /* Here we pass the match-for-lcd object to add_completion. Some |
5353 | languages match the user text against substrings of symbol | |
5354 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5355 | "std::vector::push_back", "std::string::push_back", etc., and | |
5356 | in this case we want the completion lowest common denominator | |
5357 | to be "push_back" instead of "std::". */ | |
5358 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5359 | &match_res.match_for_lcd, text, word); |
c906108c | 5360 | } |
e08bd6c5 PA |
5361 | |
5362 | return true; | |
c906108c SS |
5363 | } |
5364 | ||
6da67eb1 PA |
5365 | /* completion_list_add_name wrapper for struct symbol. */ |
5366 | ||
5367 | static void | |
eb3ff9a5 PA |
5368 | completion_list_add_symbol (completion_tracker &tracker, |
5369 | symbol *sym, | |
b5ec771e | 5370 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5371 | const char *text, const char *word) |
5372 | { | |
e08bd6c5 PA |
5373 | if (!completion_list_add_name (tracker, sym->language (), |
5374 | sym->natural_name (), | |
5375 | lookup_name, text, word)) | |
5376 | return; | |
19a2740f AB |
5377 | |
5378 | /* C++ function symbols include the parameters within both the msymbol | |
5379 | name and the symbol name. The problem is that the msymbol name will | |
5380 | describe the parameters in the most basic way, with typedefs stripped | |
5381 | out, while the symbol name will represent the types as they appear in | |
5382 | the program. This means we will see duplicate entries in the | |
5383 | completion tracker. The following converts the symbol name back to | |
5384 | the msymbol name and removes the msymbol name from the completion | |
5385 | tracker. */ | |
5386 | if (sym->language () == language_cplus | |
5387 | && SYMBOL_DOMAIN (sym) == VAR_DOMAIN | |
5388 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
5389 | { | |
5390 | /* The call to canonicalize returns the empty string if the input | |
5391 | string is already in canonical form, thanks to this we don't | |
5392 | remove the symbol we just added above. */ | |
596dc4ad | 5393 | gdb::unique_xmalloc_ptr<char> str |
19a2740f | 5394 | = cp_canonicalize_string_no_typedefs (sym->natural_name ()); |
596dc4ad TT |
5395 | if (str != nullptr) |
5396 | tracker.remove_completion (str.get ()); | |
19a2740f | 5397 | } |
6da67eb1 PA |
5398 | } |
5399 | ||
5400 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5401 | ||
5402 | static void | |
eb3ff9a5 PA |
5403 | completion_list_add_msymbol (completion_tracker &tracker, |
5404 | minimal_symbol *sym, | |
b5ec771e | 5405 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5406 | const char *text, const char *word) |
5407 | { | |
c1b5c1eb | 5408 | completion_list_add_name (tracker, sym->language (), |
c9d95fa3 | 5409 | sym->natural_name (), |
1b026119 | 5410 | lookup_name, text, word); |
6da67eb1 PA |
5411 | } |
5412 | ||
b5ec771e | 5413 | |
69636828 AF |
5414 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5415 | again and feed all the selectors into the mill. */ | |
5416 | ||
5417 | static void | |
eb3ff9a5 PA |
5418 | completion_list_objc_symbol (completion_tracker &tracker, |
5419 | struct minimal_symbol *msymbol, | |
b5ec771e | 5420 | const lookup_name_info &lookup_name, |
0d5cff50 | 5421 | const char *text, const char *word) |
69636828 AF |
5422 | { |
5423 | static char *tmp = NULL; | |
5424 | static unsigned int tmplen = 0; | |
9af17804 | 5425 | |
0d5cff50 | 5426 | const char *method, *category, *selector; |
69636828 | 5427 | char *tmp2 = NULL; |
9af17804 | 5428 | |
c9d95fa3 | 5429 | method = msymbol->natural_name (); |
69636828 AF |
5430 | |
5431 | /* Is it a method? */ | |
5432 | if ((method[0] != '-') && (method[0] != '+')) | |
5433 | return; | |
5434 | ||
1b026119 | 5435 | if (text[0] == '[') |
69636828 | 5436 | /* Complete on shortened method method. */ |
b5ec771e PA |
5437 | completion_list_add_name (tracker, language_objc, |
5438 | method + 1, | |
5439 | lookup_name, | |
1b026119 | 5440 | text, word); |
9af17804 | 5441 | |
69636828 AF |
5442 | while ((strlen (method) + 1) >= tmplen) |
5443 | { | |
5444 | if (tmplen == 0) | |
5445 | tmplen = 1024; | |
5446 | else | |
5447 | tmplen *= 2; | |
224c3ddb | 5448 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5449 | } |
5450 | selector = strchr (method, ' '); | |
5451 | if (selector != NULL) | |
5452 | selector++; | |
9af17804 | 5453 | |
69636828 | 5454 | category = strchr (method, '('); |
9af17804 | 5455 | |
69636828 AF |
5456 | if ((category != NULL) && (selector != NULL)) |
5457 | { | |
5458 | memcpy (tmp, method, (category - method)); | |
5459 | tmp[category - method] = ' '; | |
5460 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5461 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5462 | lookup_name, text, word); |
5463 | if (text[0] == '[') | |
b5ec771e | 5464 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5465 | lookup_name, text, word); |
69636828 | 5466 | } |
9af17804 | 5467 | |
69636828 AF |
5468 | if (selector != NULL) |
5469 | { | |
5470 | /* Complete on selector only. */ | |
5471 | strcpy (tmp, selector); | |
5472 | tmp2 = strchr (tmp, ']'); | |
5473 | if (tmp2 != NULL) | |
5474 | *tmp2 = '\0'; | |
9af17804 | 5475 | |
b5ec771e | 5476 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5477 | lookup_name, text, word); |
69636828 AF |
5478 | } |
5479 | } | |
5480 | ||
5481 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5482 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5483 | |
6f937416 PA |
5484 | static const char * |
5485 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5486 | { |
5487 | for (; p > text; --p) | |
5488 | { | |
5489 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5490 | continue; | |
5491 | else | |
5492 | { | |
5493 | if ((current_language->la_language == language_objc)) | |
5494 | { | |
c378eb4e | 5495 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5496 | continue; |
5497 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5498 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5499 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5500 | { /* Might be part of a method name. */ |
6f937416 | 5501 | const char *t = p; |
69636828 AF |
5502 | |
5503 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5504 | that we are in the middle of a method name. However, | |
5505 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5506 | Unfortunately we have to find it now to decide. */ | |
5507 | ||
5508 | while (t > text) | |
5509 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5510 | t[-1] == ' ' || t[-1] == ':' || | |
5511 | t[-1] == '(' || t[-1] == ')') | |
5512 | --t; | |
5513 | else | |
5514 | break; | |
5515 | ||
5516 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5517 | p = t - 2; /* Method name detected. */ |
5518 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5519 | } |
5520 | } | |
5521 | break; | |
5522 | } | |
5523 | } | |
5524 | return p; | |
5525 | } | |
5526 | ||
edb3359d | 5527 | static void |
eb3ff9a5 PA |
5528 | completion_list_add_fields (completion_tracker &tracker, |
5529 | struct symbol *sym, | |
b5ec771e | 5530 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5531 | const char *text, const char *word) |
edb3359d DJ |
5532 | { |
5533 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5534 | { | |
5535 | struct type *t = SYMBOL_TYPE (sym); | |
78134374 | 5536 | enum type_code c = t->code (); |
edb3359d DJ |
5537 | int j; |
5538 | ||
5539 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
1f704f76 | 5540 | for (j = TYPE_N_BASECLASSES (t); j < t->num_fields (); j++) |
edb3359d | 5541 | if (TYPE_FIELD_NAME (t, j)) |
c1b5c1eb | 5542 | completion_list_add_name (tracker, sym->language (), |
b5ec771e | 5543 | TYPE_FIELD_NAME (t, j), |
1b026119 | 5544 | lookup_name, text, word); |
edb3359d DJ |
5545 | } |
5546 | } | |
5547 | ||
f9d67a22 PA |
5548 | /* See symtab.h. */ |
5549 | ||
5550 | bool | |
5551 | symbol_is_function_or_method (symbol *sym) | |
5552 | { | |
78134374 | 5553 | switch (SYMBOL_TYPE (sym)->code ()) |
f9d67a22 PA |
5554 | { |
5555 | case TYPE_CODE_FUNC: | |
5556 | case TYPE_CODE_METHOD: | |
5557 | return true; | |
5558 | default: | |
5559 | return false; | |
5560 | } | |
5561 | } | |
5562 | ||
5563 | /* See symtab.h. */ | |
5564 | ||
5565 | bool | |
5566 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5567 | { | |
5568 | switch (MSYMBOL_TYPE (msymbol)) | |
5569 | { | |
5570 | case mst_text: | |
5571 | case mst_text_gnu_ifunc: | |
5572 | case mst_solib_trampoline: | |
5573 | case mst_file_text: | |
5574 | return true; | |
5575 | default: | |
5576 | return false; | |
5577 | } | |
5578 | } | |
5579 | ||
ca31ab1d PA |
5580 | /* See symtab.h. */ |
5581 | ||
5582 | bound_minimal_symbol | |
5583 | find_gnu_ifunc (const symbol *sym) | |
5584 | { | |
5585 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5586 | return {}; | |
5587 | ||
987012b8 | 5588 | lookup_name_info lookup_name (sym->search_name (), |
ca31ab1d PA |
5589 | symbol_name_match_type::SEARCH_NAME); |
5590 | struct objfile *objfile = symbol_objfile (sym); | |
5591 | ||
2b1ffcfd | 5592 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5593 | minimal_symbol *ifunc = NULL; |
5594 | ||
5595 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5596 | [&] (minimal_symbol *minsym) | |
5597 | { | |
5598 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5599 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5600 | { |
f50776aa PA |
5601 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5602 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5603 | { | |
08feed99 | 5604 | struct gdbarch *gdbarch = objfile->arch (); |
8b88a78e PA |
5605 | msym_addr |
5606 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5607 | msym_addr, | |
5608 | current_top_target ()); | |
f50776aa PA |
5609 | } |
5610 | if (msym_addr == address) | |
5611 | { | |
5612 | ifunc = minsym; | |
5613 | return true; | |
5614 | } | |
ca31ab1d PA |
5615 | } |
5616 | return false; | |
5617 | }); | |
5618 | ||
5619 | if (ifunc != NULL) | |
5620 | return {ifunc, objfile}; | |
5621 | return {}; | |
5622 | } | |
5623 | ||
e11c72c7 GB |
5624 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5625 | ||
5626 | static void | |
5627 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5628 | completion_tracker &tracker, |
f9d67a22 | 5629 | complete_symbol_mode mode, |
b5ec771e | 5630 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5631 | const char *text, const char *word, |
5632 | enum type_code code) | |
5633 | { | |
5634 | struct symbol *sym; | |
5635 | const struct block *b; | |
5636 | struct block_iterator iter; | |
5637 | int i; | |
5638 | ||
ff6fa247 GB |
5639 | if (cust == NULL) |
5640 | return; | |
5641 | ||
e11c72c7 GB |
5642 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5643 | { | |
5644 | QUIT; | |
5645 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5646 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5647 | { | |
f9d67a22 PA |
5648 | if (completion_skip_symbol (mode, sym)) |
5649 | continue; | |
5650 | ||
e11c72c7 GB |
5651 | if (code == TYPE_CODE_UNDEF |
5652 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
78134374 | 5653 | && SYMBOL_TYPE (sym)->code () == code)) |
eb3ff9a5 | 5654 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5655 | lookup_name, |
e11c72c7 GB |
5656 | text, word); |
5657 | } | |
5658 | } | |
5659 | } | |
5660 | ||
eb3ff9a5 PA |
5661 | void |
5662 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5663 | (completion_tracker &tracker, complete_symbol_mode mode, |
5664 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5665 | const char *text, const char *word, |
5666 | const char *break_on, enum type_code code) | |
c906108c | 5667 | { |
41d27058 JB |
5668 | /* Problem: All of the symbols have to be copied because readline |
5669 | frees them. I'm not going to worry about this; hopefully there | |
5670 | won't be that many. */ | |
5671 | ||
de4f826b | 5672 | struct symbol *sym; |
3977b71f | 5673 | const struct block *b; |
edb3359d | 5674 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5675 | struct block_iterator iter; |
c906108c | 5676 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5677 | const char *sym_text; |
c906108c | 5678 | |
41d27058 | 5679 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5680 | if (mode == complete_symbol_mode::LINESPEC) |
5681 | sym_text = text; | |
5682 | else | |
c906108c | 5683 | { |
6f937416 | 5684 | const char *p; |
c906108c | 5685 | char quote_found; |
6f937416 | 5686 | const char *quote_pos = NULL; |
c906108c SS |
5687 | |
5688 | /* First see if this is a quoted string. */ | |
5689 | quote_found = '\0'; | |
5690 | for (p = text; *p != '\0'; ++p) | |
5691 | { | |
5692 | if (quote_found != '\0') | |
5693 | { | |
5694 | if (*p == quote_found) | |
5695 | /* Found close quote. */ | |
5696 | quote_found = '\0'; | |
5697 | else if (*p == '\\' && p[1] == quote_found) | |
5698 | /* A backslash followed by the quote character | |
dda83cd7 | 5699 | doesn't end the string. */ |
c906108c SS |
5700 | ++p; |
5701 | } | |
5702 | else if (*p == '\'' || *p == '"') | |
5703 | { | |
5704 | quote_found = *p; | |
5705 | quote_pos = p; | |
5706 | } | |
5707 | } | |
5708 | if (quote_found == '\'') | |
5709 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5710 | sym_text = quote_pos + 1; | |
5711 | else if (quote_found == '"') | |
5712 | /* A double-quoted string is never a symbol, nor does it make sense | |
dda83cd7 | 5713 | to complete it any other way. */ |
c94fdfd0 | 5714 | { |
ef0b411a | 5715 | return; |
c94fdfd0 | 5716 | } |
c906108c SS |
5717 | else |
5718 | { | |
5719 | /* It is not a quoted string. Break it based on the characters | |
5720 | which are in symbols. */ | |
5721 | while (p > text) | |
5722 | { | |
95699ff0 | 5723 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5724 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5725 | --p; |
5726 | else | |
5727 | break; | |
5728 | } | |
5729 | sym_text = p; | |
5730 | } | |
5731 | } | |
5732 | ||
1b026119 | 5733 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5734 | |
c906108c SS |
5735 | /* At this point scan through the misc symbol vectors and add each |
5736 | symbol you find to the list. Eventually we want to ignore | |
5737 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5738 | handled by the psymtab code below). */ |
c906108c | 5739 | |
2f68a895 TT |
5740 | if (code == TYPE_CODE_UNDEF) |
5741 | { | |
2030c079 | 5742 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5743 | { |
7932255d | 5744 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5745 | { |
5746 | QUIT; | |
9af17804 | 5747 | |
5325b9bf TT |
5748 | if (completion_skip_symbol (mode, msymbol)) |
5749 | continue; | |
f9d67a22 | 5750 | |
5325b9bf TT |
5751 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5752 | sym_text, word); | |
eb3ff9a5 | 5753 | |
5325b9bf TT |
5754 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5755 | sym_text, word); | |
5756 | } | |
2f68a895 TT |
5757 | } |
5758 | } | |
c906108c | 5759 | |
e11c72c7 | 5760 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5761 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5762 | { |
b669c953 | 5763 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5764 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5765 | sym_text, word, code); | |
5766 | } | |
e11c72c7 | 5767 | |
14bc53a8 PA |
5768 | /* Look through the partial symtabs for all symbols which begin by |
5769 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5770 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5771 | lookup_name, |
5772 | NULL, | |
14bc53a8 PA |
5773 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5774 | { | |
5775 | add_symtab_completions (symtab, | |
f9d67a22 | 5776 | tracker, mode, lookup_name, |
1b026119 | 5777 | sym_text, word, code); |
14bc53a8 PA |
5778 | }, |
5779 | ALL_DOMAIN); | |
e11c72c7 | 5780 | |
c906108c | 5781 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5782 | complete on local vars). Also catch fields of types defined in |
5783 | this places which match our text string. Only complete on types | |
c378eb4e | 5784 | visible from current context. */ |
edb3359d DJ |
5785 | |
5786 | b = get_selected_block (0); | |
5787 | surrounding_static_block = block_static_block (b); | |
5788 | surrounding_global_block = block_global_block (b); | |
5789 | if (surrounding_static_block != NULL) | |
5790 | while (b != surrounding_static_block) | |
5791 | { | |
5792 | QUIT; | |
c906108c | 5793 | |
edb3359d DJ |
5794 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5795 | { | |
2f68a895 TT |
5796 | if (code == TYPE_CODE_UNDEF) |
5797 | { | |
b5ec771e | 5798 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5799 | sym_text, word); |
b5ec771e | 5800 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5801 | sym_text, word); |
2f68a895 TT |
5802 | } |
5803 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
78134374 | 5804 | && SYMBOL_TYPE (sym)->code () == code) |
b5ec771e | 5805 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5806 | sym_text, word); |
edb3359d | 5807 | } |
c5aa993b | 5808 | |
edb3359d DJ |
5809 | /* Stop when we encounter an enclosing function. Do not stop for |
5810 | non-inlined functions - the locals of the enclosing function | |
5811 | are in scope for a nested function. */ | |
5812 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5813 | break; | |
5814 | b = BLOCK_SUPERBLOCK (b); | |
5815 | } | |
c906108c | 5816 | |
edb3359d | 5817 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5818 | |
2f68a895 TT |
5819 | if (code == TYPE_CODE_UNDEF) |
5820 | { | |
5821 | if (surrounding_static_block != NULL) | |
5822 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5823 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5824 | sym_text, word); |
edb3359d | 5825 | |
2f68a895 TT |
5826 | if (surrounding_global_block != NULL) |
5827 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5828 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5829 | sym_text, word); |
2f68a895 | 5830 | } |
c906108c | 5831 | |
2f68a895 TT |
5832 | /* Skip macros if we are completing a struct tag -- arguable but |
5833 | usually what is expected. */ | |
1ac14a04 | 5834 | if (current_language->macro_expansion () == macro_expansion_c |
2f68a895 | 5835 | && code == TYPE_CODE_UNDEF) |
9a044a89 | 5836 | { |
f6c2623e | 5837 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5838 | |
14bc53a8 PA |
5839 | /* This adds a macro's name to the current completion list. */ |
5840 | auto add_macro_name = [&] (const char *macro_name, | |
5841 | const macro_definition *, | |
5842 | macro_source_file *, | |
5843 | int) | |
5844 | { | |
1b026119 PA |
5845 | completion_list_add_name (tracker, language_c, macro_name, |
5846 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5847 | }; |
5848 | ||
9a044a89 TT |
5849 | /* Add any macros visible in the default scope. Note that this |
5850 | may yield the occasional wrong result, because an expression | |
5851 | might be evaluated in a scope other than the default. For | |
5852 | example, if the user types "break file:line if <TAB>", the | |
5853 | resulting expression will be evaluated at "file:line" -- but | |
5854 | at there does not seem to be a way to detect this at | |
5855 | completion time. */ | |
5856 | scope = default_macro_scope (); | |
5857 | if (scope) | |
f6c2623e TT |
5858 | macro_for_each_in_scope (scope->file, scope->line, |
5859 | add_macro_name); | |
9a044a89 TT |
5860 | |
5861 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5862 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5863 | } |
ef0b411a GB |
5864 | } |
5865 | ||
eb3ff9a5 PA |
5866 | /* Collect all symbols (regardless of class) which begin by matching |
5867 | TEXT. */ | |
41d27058 | 5868 | |
eb3ff9a5 PA |
5869 | void |
5870 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5871 | complete_symbol_mode mode, |
b5ec771e | 5872 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5873 | const char *text, const char *word) |
41d27058 | 5874 | { |
7e56227d AB |
5875 | current_language->collect_symbol_completion_matches (tracker, mode, |
5876 | name_match_type, | |
5877 | text, word, | |
5878 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5879 | } |
5880 | ||
eb3ff9a5 PA |
5881 | /* Like collect_symbol_completion_matches, but only collect |
5882 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5883 | |
eb3ff9a5 PA |
5884 | void |
5885 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5886 | const char *text, const char *word, | |
5887 | enum type_code code) | |
2f68a895 | 5888 | { |
c6756f62 | 5889 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5890 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5891 | |
2f68a895 TT |
5892 | gdb_assert (code == TYPE_CODE_UNION |
5893 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5894 | || code == TYPE_CODE_ENUM); |
7e56227d AB |
5895 | current_language->collect_symbol_completion_matches (tracker, mode, |
5896 | name_match_type, | |
5897 | text, word, code); | |
41d27058 JB |
5898 | } |
5899 | ||
eb3ff9a5 PA |
5900 | /* Like collect_symbol_completion_matches, but collects a list of |
5901 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5902 | |
eb3ff9a5 PA |
5903 | void |
5904 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5905 | complete_symbol_mode mode, |
b5ec771e | 5906 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5907 | const char *text, const char *word, |
5908 | const char *srcfile) | |
c94fdfd0 | 5909 | { |
c94fdfd0 | 5910 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5911 | const char *sym_text; |
c94fdfd0 EZ |
5912 | |
5913 | /* Now look for the symbol we are supposed to complete on. | |
5914 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5915 | if (mode == complete_symbol_mode::LINESPEC) |
5916 | sym_text = text; | |
5917 | else | |
c94fdfd0 | 5918 | { |
6f937416 | 5919 | const char *p; |
c94fdfd0 | 5920 | char quote_found; |
6f937416 | 5921 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5922 | |
5923 | /* First see if this is a quoted string. */ | |
5924 | quote_found = '\0'; | |
5925 | for (p = text; *p != '\0'; ++p) | |
5926 | { | |
5927 | if (quote_found != '\0') | |
5928 | { | |
5929 | if (*p == quote_found) | |
5930 | /* Found close quote. */ | |
5931 | quote_found = '\0'; | |
5932 | else if (*p == '\\' && p[1] == quote_found) | |
5933 | /* A backslash followed by the quote character | |
dda83cd7 | 5934 | doesn't end the string. */ |
c94fdfd0 EZ |
5935 | ++p; |
5936 | } | |
5937 | else if (*p == '\'' || *p == '"') | |
5938 | { | |
5939 | quote_found = *p; | |
5940 | quote_pos = p; | |
5941 | } | |
5942 | } | |
5943 | if (quote_found == '\'') | |
5944 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5945 | sym_text = quote_pos + 1; | |
5946 | else if (quote_found == '"') | |
5947 | /* A double-quoted string is never a symbol, nor does it make sense | |
dda83cd7 | 5948 | to complete it any other way. */ |
c94fdfd0 | 5949 | { |
eb3ff9a5 | 5950 | return; |
c94fdfd0 EZ |
5951 | } |
5952 | else | |
5953 | { | |
69636828 AF |
5954 | /* Not a quoted string. */ |
5955 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5956 | } |
5957 | } | |
5958 | ||
1b026119 | 5959 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5960 | |
8f14146e PA |
5961 | /* Go through symtabs for SRCFILE and check the externs and statics |
5962 | for symbols which match. */ | |
5963 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5964 | { |
8f14146e | 5965 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5966 | tracker, mode, lookup_name, |
1b026119 | 5967 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5968 | return false; |
5969 | }); | |
e27852be DE |
5970 | } |
5971 | ||
c94fdfd0 EZ |
5972 | /* A helper function for make_source_files_completion_list. It adds |
5973 | another file name to a list of possible completions, growing the | |
5974 | list as necessary. */ | |
5975 | ||
5976 | static void | |
6f937416 | 5977 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5978 | completion_list *list) |
c94fdfd0 | 5979 | { |
60a20c19 | 5980 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5981 | } |
5982 | ||
5983 | static int | |
5984 | not_interesting_fname (const char *fname) | |
5985 | { | |
5986 | static const char *illegal_aliens[] = { | |
5987 | "_globals_", /* inserted by coff_symtab_read */ | |
5988 | NULL | |
5989 | }; | |
5990 | int i; | |
5991 | ||
5992 | for (i = 0; illegal_aliens[i]; i++) | |
5993 | { | |
0ba1096a | 5994 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5995 | return 1; |
5996 | } | |
5997 | return 0; | |
5998 | } | |
5999 | ||
ccefe4c4 TT |
6000 | /* An object of this type is passed as the user_data argument to |
6001 | map_partial_symbol_filenames. */ | |
6002 | struct add_partial_filename_data | |
6003 | { | |
9fdc877b | 6004 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
6005 | const char *text; |
6006 | const char *word; | |
ccefe4c4 | 6007 | int text_len; |
eb3ff9a5 | 6008 | completion_list *list; |
ccefe4c4 TT |
6009 | }; |
6010 | ||
6011 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 6012 | |
ccefe4c4 | 6013 | static void |
2837d59e | 6014 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
6015 | void *user_data) |
6016 | { | |
19ba03f4 SM |
6017 | struct add_partial_filename_data *data |
6018 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
6019 | |
6020 | if (not_interesting_fname (filename)) | |
6021 | return; | |
bbf2f4df | 6022 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 6023 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
6024 | { |
6025 | /* This file matches for a completion; add it to the | |
6026 | current list of matches. */ | |
49c4e619 | 6027 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
6028 | } |
6029 | else | |
6030 | { | |
6031 | const char *base_name = lbasename (filename); | |
433759f7 | 6032 | |
ccefe4c4 | 6033 | if (base_name != filename |
bbf2f4df | 6034 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 6035 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 6036 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
6037 | } |
6038 | } | |
6039 | ||
eb3ff9a5 | 6040 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 6041 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 6042 | program. */ |
c94fdfd0 | 6043 | |
eb3ff9a5 | 6044 | completion_list |
6f937416 | 6045 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 6046 | { |
c94fdfd0 | 6047 | size_t text_len = strlen (text); |
eb3ff9a5 | 6048 | completion_list list; |
31889e00 | 6049 | const char *base_name; |
ccefe4c4 | 6050 | struct add_partial_filename_data datum; |
c94fdfd0 | 6051 | |
c94fdfd0 EZ |
6052 | if (!have_full_symbols () && !have_partial_symbols ()) |
6053 | return list; | |
6054 | ||
bbf2f4df | 6055 | filename_seen_cache filenames_seen; |
9fdc877b | 6056 | |
2030c079 | 6057 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 6058 | { |
b669c953 | 6059 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 6060 | { |
8b31193a TT |
6061 | for (symtab *s : compunit_filetabs (cu)) |
6062 | { | |
6063 | if (not_interesting_fname (s->filename)) | |
6064 | continue; | |
6065 | if (!filenames_seen.seen (s->filename) | |
6066 | && filename_ncmp (s->filename, text, text_len) == 0) | |
6067 | { | |
6068 | /* This file matches for a completion; add it to the current | |
6069 | list of matches. */ | |
6070 | add_filename_to_list (s->filename, text, word, &list); | |
6071 | } | |
6072 | else | |
6073 | { | |
6074 | /* NOTE: We allow the user to type a base name when the | |
6075 | debug info records leading directories, but not the other | |
6076 | way around. This is what subroutines of breakpoint | |
6077 | command do when they parse file names. */ | |
6078 | base_name = lbasename (s->filename); | |
6079 | if (base_name != s->filename | |
6080 | && !filenames_seen.seen (base_name) | |
6081 | && filename_ncmp (base_name, text, text_len) == 0) | |
6082 | add_filename_to_list (base_name, text, word, &list); | |
6083 | } | |
6084 | } | |
c94fdfd0 EZ |
6085 | } |
6086 | } | |
6087 | ||
bbf2f4df | 6088 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
6089 | datum.text = text; |
6090 | datum.word = word; | |
6091 | datum.text_len = text_len; | |
6092 | datum.list = &list; | |
bb4142cf DE |
6093 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
6094 | 0 /*need_fullname*/); | |
9fdc877b | 6095 | |
c94fdfd0 EZ |
6096 | return list; |
6097 | } | |
c906108c | 6098 | \f |
51cc5b07 | 6099 | /* Track MAIN */ |
32ac0d11 TT |
6100 | |
6101 | /* Return the "main_info" object for the current program space. If | |
6102 | the object has not yet been created, create it and fill in some | |
6103 | default values. */ | |
6104 | ||
6105 | static struct main_info * | |
6106 | get_main_info (void) | |
6107 | { | |
a32ad8c5 | 6108 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
6109 | |
6110 | if (info == NULL) | |
6111 | { | |
3d548a53 TT |
6112 | /* It may seem strange to store the main name in the progspace |
6113 | and also in whatever objfile happens to see a main name in | |
6114 | its debug info. The reason for this is mainly historical: | |
6115 | gdb returned "main" as the name even if no function named | |
6116 | "main" was defined the program; and this approach lets us | |
6117 | keep compatibility. */ | |
a32ad8c5 | 6118 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
6119 | } |
6120 | ||
6121 | return info; | |
6122 | } | |
6123 | ||
3d548a53 | 6124 | static void |
9e6c82ad | 6125 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 6126 | { |
32ac0d11 TT |
6127 | struct main_info *info = get_main_info (); |
6128 | ||
6129 | if (info->name_of_main != NULL) | |
51cc5b07 | 6130 | { |
32ac0d11 TT |
6131 | xfree (info->name_of_main); |
6132 | info->name_of_main = NULL; | |
6133 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
6134 | } |
6135 | if (name != NULL) | |
6136 | { | |
32ac0d11 TT |
6137 | info->name_of_main = xstrdup (name); |
6138 | info->language_of_main = lang; | |
51cc5b07 AC |
6139 | } |
6140 | } | |
6141 | ||
ea53e89f JB |
6142 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
6143 | accordingly. */ | |
6144 | ||
6145 | static void | |
6146 | find_main_name (void) | |
6147 | { | |
cd6c7346 | 6148 | const char *new_main_name; |
3d548a53 TT |
6149 | |
6150 | /* First check the objfiles to see whether a debuginfo reader has | |
6151 | picked up the appropriate main name. Historically the main name | |
6152 | was found in a more or less random way; this approach instead | |
6153 | relies on the order of objfile creation -- which still isn't | |
6154 | guaranteed to get the correct answer, but is just probably more | |
6155 | accurate. */ | |
2030c079 | 6156 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
6157 | { |
6158 | if (objfile->per_bfd->name_of_main != NULL) | |
6159 | { | |
6160 | set_main_name (objfile->per_bfd->name_of_main, | |
6161 | objfile->per_bfd->language_of_main); | |
6162 | return; | |
6163 | } | |
6164 | } | |
ea53e89f JB |
6165 | |
6166 | /* Try to see if the main procedure is in Ada. */ | |
6167 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
6168 | be to add a new method in the language vector, and call this | |
6169 | method for each language until one of them returns a non-empty | |
6170 | name. This would allow us to remove this hard-coded call to | |
6171 | an Ada function. It is not clear that this is a better approach | |
6172 | at this point, because all methods need to be written in a way | |
c378eb4e | 6173 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
6174 | important that a method does not return a wrong name for the main |
6175 | procedure if the main procedure is actually written in a different | |
6176 | language. It is easy to guaranty this with Ada, since we use a | |
6177 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 6178 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
6179 | be guarantied for languages such as C, for instance. This suggests |
6180 | that order of call for these methods becomes important, which means | |
6181 | a more complicated approach. */ | |
6182 | new_main_name = ada_main_name (); | |
6183 | if (new_main_name != NULL) | |
9af17804 | 6184 | { |
9e6c82ad | 6185 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
6186 | return; |
6187 | } | |
6188 | ||
63778547 IB |
6189 | new_main_name = d_main_name (); |
6190 | if (new_main_name != NULL) | |
6191 | { | |
6192 | set_main_name (new_main_name, language_d); | |
6193 | return; | |
6194 | } | |
6195 | ||
a766d390 DE |
6196 | new_main_name = go_main_name (); |
6197 | if (new_main_name != NULL) | |
6198 | { | |
9e6c82ad | 6199 | set_main_name (new_main_name, language_go); |
a766d390 DE |
6200 | return; |
6201 | } | |
6202 | ||
cd6c7346 PM |
6203 | new_main_name = pascal_main_name (); |
6204 | if (new_main_name != NULL) | |
9af17804 | 6205 | { |
9e6c82ad | 6206 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
6207 | return; |
6208 | } | |
6209 | ||
ea53e89f JB |
6210 | /* The languages above didn't identify the name of the main procedure. |
6211 | Fallback to "main". */ | |
d3214198 TV |
6212 | |
6213 | /* Try to find language for main in psymtabs. */ | |
6214 | enum language lang | |
6215 | = find_quick_global_symbol_language ("main", VAR_DOMAIN); | |
6216 | if (lang != language_unknown) | |
6217 | { | |
6218 | set_main_name ("main", lang); | |
6219 | return; | |
6220 | } | |
6221 | ||
9e6c82ad | 6222 | set_main_name ("main", language_unknown); |
ea53e89f JB |
6223 | } |
6224 | ||
cd215b2e TT |
6225 | /* See symtab.h. */ |
6226 | ||
6227 | const char * | |
6228 | main_name () | |
51cc5b07 | 6229 | { |
32ac0d11 TT |
6230 | struct main_info *info = get_main_info (); |
6231 | ||
6232 | if (info->name_of_main == NULL) | |
ea53e89f JB |
6233 | find_main_name (); |
6234 | ||
32ac0d11 | 6235 | return info->name_of_main; |
51cc5b07 AC |
6236 | } |
6237 | ||
9e6c82ad TT |
6238 | /* Return the language of the main function. If it is not known, |
6239 | return language_unknown. */ | |
6240 | ||
6241 | enum language | |
6242 | main_language (void) | |
6243 | { | |
32ac0d11 TT |
6244 | struct main_info *info = get_main_info (); |
6245 | ||
6246 | if (info->name_of_main == NULL) | |
6247 | find_main_name (); | |
6248 | ||
6249 | return info->language_of_main; | |
9e6c82ad TT |
6250 | } |
6251 | ||
ea53e89f JB |
6252 | /* Handle ``executable_changed'' events for the symtab module. */ |
6253 | ||
6254 | static void | |
781b42b0 | 6255 | symtab_observer_executable_changed (void) |
ea53e89f JB |
6256 | { |
6257 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 6258 | set_main_name (NULL, language_unknown); |
ea53e89f | 6259 | } |
51cc5b07 | 6260 | |
a6c727b2 DJ |
6261 | /* Return 1 if the supplied producer string matches the ARM RealView |
6262 | compiler (armcc). */ | |
6263 | ||
ececd218 | 6264 | bool |
a6c727b2 DJ |
6265 | producer_is_realview (const char *producer) |
6266 | { | |
6267 | static const char *const arm_idents[] = { | |
6268 | "ARM C Compiler, ADS", | |
6269 | "Thumb C Compiler, ADS", | |
6270 | "ARM C++ Compiler, ADS", | |
6271 | "Thumb C++ Compiler, ADS", | |
6272 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6273 | "ARM C/C++ Compiler, RVCT" | |
6274 | }; | |
6275 | int i; | |
6276 | ||
6277 | if (producer == NULL) | |
ececd218 | 6278 | return false; |
a6c727b2 DJ |
6279 | |
6280 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6281 | if (startswith (producer, arm_idents[i])) |
ececd218 | 6282 | return true; |
a6c727b2 | 6283 | |
ececd218 | 6284 | return false; |
a6c727b2 | 6285 | } |
ed0616c6 | 6286 | |
f1e6e072 TT |
6287 | \f |
6288 | ||
6289 | /* The next index to hand out in response to a registration request. */ | |
6290 | ||
6291 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6292 | ||
6293 | /* The maximum number of "aclass" registrations we support. This is | |
6294 | constant for convenience. */ | |
6295 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6296 | ||
6297 | /* The objects representing the various "aclass" values. The elements | |
6298 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6299 | elements are those registered at gdb initialization time. */ | |
6300 | ||
6301 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6302 | ||
6303 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6304 | so that it can be const. */ | |
6305 | ||
6306 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6307 | ||
6308 | /* Make sure we saved enough room in struct symbol. */ | |
6309 | ||
6310 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6311 | ||
6312 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6313 | is the ops vector associated with this index. This returns the new | |
6314 | index, which should be used as the aclass_index field for symbols | |
6315 | of this type. */ | |
6316 | ||
6317 | int | |
6318 | register_symbol_computed_impl (enum address_class aclass, | |
6319 | const struct symbol_computed_ops *ops) | |
6320 | { | |
6321 | int result = next_aclass_value++; | |
6322 | ||
6323 | gdb_assert (aclass == LOC_COMPUTED); | |
6324 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6325 | symbol_impl[result].aclass = aclass; | |
6326 | symbol_impl[result].ops_computed = ops; | |
6327 | ||
24d6c2a0 TT |
6328 | /* Sanity check OPS. */ |
6329 | gdb_assert (ops != NULL); | |
6330 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6331 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6332 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6333 | gdb_assert (ops->read_variable != NULL); |
6334 | ||
f1e6e072 TT |
6335 | return result; |
6336 | } | |
6337 | ||
6338 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6339 | OPS is the ops vector associated with this index. This returns the | |
6340 | new index, which should be used as the aclass_index field for symbols | |
6341 | of this type. */ | |
6342 | ||
6343 | int | |
6344 | register_symbol_block_impl (enum address_class aclass, | |
6345 | const struct symbol_block_ops *ops) | |
6346 | { | |
6347 | int result = next_aclass_value++; | |
6348 | ||
6349 | gdb_assert (aclass == LOC_BLOCK); | |
6350 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6351 | symbol_impl[result].aclass = aclass; | |
6352 | symbol_impl[result].ops_block = ops; | |
6353 | ||
6354 | /* Sanity check OPS. */ | |
6355 | gdb_assert (ops != NULL); | |
6356 | gdb_assert (ops->find_frame_base_location != NULL); | |
6357 | ||
6358 | return result; | |
6359 | } | |
6360 | ||
6361 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6362 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6363 | this index. This returns the new index, which should be used as | |
6364 | the aclass_index field for symbols of this type. */ | |
6365 | ||
6366 | int | |
6367 | register_symbol_register_impl (enum address_class aclass, | |
6368 | const struct symbol_register_ops *ops) | |
6369 | { | |
6370 | int result = next_aclass_value++; | |
6371 | ||
6372 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6373 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6374 | symbol_impl[result].aclass = aclass; | |
6375 | symbol_impl[result].ops_register = ops; | |
6376 | ||
6377 | return result; | |
6378 | } | |
6379 | ||
6380 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6381 | address_class. */ | |
6382 | ||
6383 | static void | |
6384 | initialize_ordinary_address_classes (void) | |
6385 | { | |
6386 | int i; | |
6387 | ||
6388 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6389 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6390 | } |
6391 | ||
6392 | \f | |
6393 | ||
08be3fe3 DE |
6394 | /* See symtab.h. */ |
6395 | ||
6396 | struct objfile * | |
6397 | symbol_objfile (const struct symbol *symbol) | |
6398 | { | |
1994afbf DE |
6399 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6400 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6401 | } |
6402 | ||
6403 | /* See symtab.h. */ | |
6404 | ||
6405 | struct gdbarch * | |
6406 | symbol_arch (const struct symbol *symbol) | |
6407 | { | |
1994afbf DE |
6408 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6409 | return symbol->owner.arch; | |
08feed99 | 6410 | return SYMTAB_OBJFILE (symbol->owner.symtab)->arch (); |
08be3fe3 DE |
6411 | } |
6412 | ||
6413 | /* See symtab.h. */ | |
6414 | ||
6415 | struct symtab * | |
6416 | symbol_symtab (const struct symbol *symbol) | |
6417 | { | |
1994afbf DE |
6418 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6419 | return symbol->owner.symtab; | |
08be3fe3 DE |
6420 | } |
6421 | ||
6422 | /* See symtab.h. */ | |
6423 | ||
6424 | void | |
6425 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6426 | { | |
1994afbf DE |
6427 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6428 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6429 | } |
6430 | ||
4b610737 TT |
6431 | /* See symtab.h. */ |
6432 | ||
6433 | CORE_ADDR | |
6434 | get_symbol_address (const struct symbol *sym) | |
6435 | { | |
6436 | gdb_assert (sym->maybe_copied); | |
6437 | gdb_assert (SYMBOL_CLASS (sym) == LOC_STATIC); | |
6438 | ||
987012b8 | 6439 | const char *linkage_name = sym->linkage_name (); |
4b610737 TT |
6440 | |
6441 | for (objfile *objfile : current_program_space->objfiles ()) | |
6442 | { | |
3e65b3e9 TT |
6443 | if (objfile->separate_debug_objfile_backlink != nullptr) |
6444 | continue; | |
6445 | ||
4b610737 TT |
6446 | bound_minimal_symbol minsym |
6447 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6448 | if (minsym.minsym != nullptr) | |
6449 | return BMSYMBOL_VALUE_ADDRESS (minsym); | |
6450 | } | |
468c0cbb | 6451 | return sym->value.address; |
4b610737 TT |
6452 | } |
6453 | ||
6454 | /* See symtab.h. */ | |
6455 | ||
6456 | CORE_ADDR | |
6457 | get_msymbol_address (struct objfile *objf, const struct minimal_symbol *minsym) | |
6458 | { | |
6459 | gdb_assert (minsym->maybe_copied); | |
6460 | gdb_assert ((objf->flags & OBJF_MAINLINE) == 0); | |
6461 | ||
c9d95fa3 | 6462 | const char *linkage_name = minsym->linkage_name (); |
4b610737 TT |
6463 | |
6464 | for (objfile *objfile : current_program_space->objfiles ()) | |
6465 | { | |
3e65b3e9 TT |
6466 | if (objfile->separate_debug_objfile_backlink == nullptr |
6467 | && (objfile->flags & OBJF_MAINLINE) != 0) | |
4b610737 TT |
6468 | { |
6469 | bound_minimal_symbol found | |
6470 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6471 | if (found.minsym != nullptr) | |
6472 | return BMSYMBOL_VALUE_ADDRESS (found); | |
6473 | } | |
6474 | } | |
6a053cb1 | 6475 | return minsym->value.address + objf->section_offsets[minsym->section]; |
4b610737 TT |
6476 | } |
6477 | ||
e623cf5d TT |
6478 | \f |
6479 | ||
165f8965 AB |
6480 | /* Hold the sub-commands of 'info module'. */ |
6481 | ||
6482 | static struct cmd_list_element *info_module_cmdlist = NULL; | |
6483 | ||
165f8965 AB |
6484 | /* See symtab.h. */ |
6485 | ||
6486 | std::vector<module_symbol_search> | |
6487 | search_module_symbols (const char *module_regexp, const char *regexp, | |
6488 | const char *type_regexp, search_domain kind) | |
6489 | { | |
6490 | std::vector<module_symbol_search> results; | |
6491 | ||
6492 | /* Search for all modules matching MODULE_REGEXP. */ | |
470c0b1c AB |
6493 | global_symbol_searcher spec1 (MODULES_DOMAIN, module_regexp); |
6494 | spec1.set_exclude_minsyms (true); | |
6495 | std::vector<symbol_search> modules = spec1.search (); | |
165f8965 AB |
6496 | |
6497 | /* Now search for all symbols of the required KIND matching the required | |
6498 | regular expressions. We figure out which ones are in which modules | |
6499 | below. */ | |
470c0b1c AB |
6500 | global_symbol_searcher spec2 (kind, regexp); |
6501 | spec2.set_symbol_type_regexp (type_regexp); | |
6502 | spec2.set_exclude_minsyms (true); | |
6503 | std::vector<symbol_search> symbols = spec2.search (); | |
165f8965 AB |
6504 | |
6505 | /* Now iterate over all MODULES, checking to see which items from | |
6506 | SYMBOLS are in each module. */ | |
6507 | for (const symbol_search &p : modules) | |
6508 | { | |
6509 | QUIT; | |
6510 | ||
6511 | /* This is a module. */ | |
6512 | gdb_assert (p.symbol != nullptr); | |
6513 | ||
987012b8 | 6514 | std::string prefix = p.symbol->print_name (); |
165f8965 AB |
6515 | prefix += "::"; |
6516 | ||
6517 | for (const symbol_search &q : symbols) | |
6518 | { | |
6519 | if (q.symbol == nullptr) | |
6520 | continue; | |
6521 | ||
987012b8 | 6522 | if (strncmp (q.symbol->print_name (), prefix.c_str (), |
165f8965 AB |
6523 | prefix.size ()) != 0) |
6524 | continue; | |
6525 | ||
6526 | results.push_back ({p, q}); | |
6527 | } | |
6528 | } | |
6529 | ||
6530 | return results; | |
6531 | } | |
6532 | ||
6533 | /* Implement the core of both 'info module functions' and 'info module | |
6534 | variables'. */ | |
6535 | ||
6536 | static void | |
6537 | info_module_subcommand (bool quiet, const char *module_regexp, | |
6538 | const char *regexp, const char *type_regexp, | |
6539 | search_domain kind) | |
6540 | { | |
6541 | /* Print a header line. Don't build the header line bit by bit as this | |
6542 | prevents internationalisation. */ | |
6543 | if (!quiet) | |
6544 | { | |
6545 | if (module_regexp == nullptr) | |
6546 | { | |
6547 | if (type_regexp == nullptr) | |
6548 | { | |
6549 | if (regexp == nullptr) | |
6550 | printf_filtered ((kind == VARIABLES_DOMAIN | |
6551 | ? _("All variables in all modules:") | |
6552 | : _("All functions in all modules:"))); | |
6553 | else | |
6554 | printf_filtered | |
6555 | ((kind == VARIABLES_DOMAIN | |
6556 | ? _("All variables matching regular expression" | |
6557 | " \"%s\" in all modules:") | |
6558 | : _("All functions matching regular expression" | |
6559 | " \"%s\" in all modules:")), | |
6560 | regexp); | |
6561 | } | |
6562 | else | |
6563 | { | |
6564 | if (regexp == nullptr) | |
6565 | printf_filtered | |
6566 | ((kind == VARIABLES_DOMAIN | |
6567 | ? _("All variables with type matching regular " | |
6568 | "expression \"%s\" in all modules:") | |
6569 | : _("All functions with type matching regular " | |
6570 | "expression \"%s\" in all modules:")), | |
6571 | type_regexp); | |
6572 | else | |
6573 | printf_filtered | |
6574 | ((kind == VARIABLES_DOMAIN | |
6575 | ? _("All variables matching regular expression " | |
6576 | "\"%s\",\n\twith type matching regular " | |
6577 | "expression \"%s\" in all modules:") | |
6578 | : _("All functions matching regular expression " | |
6579 | "\"%s\",\n\twith type matching regular " | |
6580 | "expression \"%s\" in all modules:")), | |
6581 | regexp, type_regexp); | |
6582 | } | |
6583 | } | |
6584 | else | |
6585 | { | |
6586 | if (type_regexp == nullptr) | |
6587 | { | |
6588 | if (regexp == nullptr) | |
6589 | printf_filtered | |
6590 | ((kind == VARIABLES_DOMAIN | |
6591 | ? _("All variables in all modules matching regular " | |
6592 | "expression \"%s\":") | |
6593 | : _("All functions in all modules matching regular " | |
6594 | "expression \"%s\":")), | |
6595 | module_regexp); | |
6596 | else | |
6597 | printf_filtered | |
6598 | ((kind == VARIABLES_DOMAIN | |
6599 | ? _("All variables matching regular expression " | |
6600 | "\"%s\",\n\tin all modules matching regular " | |
6601 | "expression \"%s\":") | |
6602 | : _("All functions matching regular expression " | |
6603 | "\"%s\",\n\tin all modules matching regular " | |
6604 | "expression \"%s\":")), | |
6605 | regexp, module_regexp); | |
6606 | } | |
6607 | else | |
6608 | { | |
6609 | if (regexp == nullptr) | |
6610 | printf_filtered | |
6611 | ((kind == VARIABLES_DOMAIN | |
6612 | ? _("All variables with type matching regular " | |
6613 | "expression \"%s\"\n\tin all modules matching " | |
6614 | "regular expression \"%s\":") | |
6615 | : _("All functions with type matching regular " | |
6616 | "expression \"%s\"\n\tin all modules matching " | |
6617 | "regular expression \"%s\":")), | |
6618 | type_regexp, module_regexp); | |
6619 | else | |
6620 | printf_filtered | |
6621 | ((kind == VARIABLES_DOMAIN | |
6622 | ? _("All variables matching regular expression " | |
6623 | "\"%s\",\n\twith type matching regular expression " | |
6624 | "\"%s\",\n\tin all modules matching regular " | |
6625 | "expression \"%s\":") | |
6626 | : _("All functions matching regular expression " | |
6627 | "\"%s\",\n\twith type matching regular expression " | |
6628 | "\"%s\",\n\tin all modules matching regular " | |
6629 | "expression \"%s\":")), | |
6630 | regexp, type_regexp, module_regexp); | |
6631 | } | |
6632 | } | |
6633 | printf_filtered ("\n"); | |
6634 | } | |
6635 | ||
6636 | /* Find all symbols of type KIND matching the given regular expressions | |
6637 | along with the symbols for the modules in which those symbols | |
6638 | reside. */ | |
6639 | std::vector<module_symbol_search> module_symbols | |
6640 | = search_module_symbols (module_regexp, regexp, type_regexp, kind); | |
6641 | ||
6642 | std::sort (module_symbols.begin (), module_symbols.end (), | |
6643 | [] (const module_symbol_search &a, const module_symbol_search &b) | |
6644 | { | |
6645 | if (a.first < b.first) | |
6646 | return true; | |
6647 | else if (a.first == b.first) | |
6648 | return a.second < b.second; | |
6649 | else | |
6650 | return false; | |
6651 | }); | |
6652 | ||
6653 | const char *last_filename = ""; | |
6654 | const symbol *last_module_symbol = nullptr; | |
6655 | for (const module_symbol_search &ms : module_symbols) | |
6656 | { | |
6657 | const symbol_search &p = ms.first; | |
6658 | const symbol_search &q = ms.second; | |
6659 | ||
6660 | gdb_assert (q.symbol != nullptr); | |
6661 | ||
6662 | if (last_module_symbol != p.symbol) | |
6663 | { | |
6664 | printf_filtered ("\n"); | |
987012b8 | 6665 | printf_filtered (_("Module \"%s\":\n"), p.symbol->print_name ()); |
165f8965 AB |
6666 | last_module_symbol = p.symbol; |
6667 | last_filename = ""; | |
6668 | } | |
6669 | ||
6670 | print_symbol_info (FUNCTIONS_DOMAIN, q.symbol, q.block, | |
6671 | last_filename); | |
6672 | last_filename | |
6673 | = symtab_to_filename_for_display (symbol_symtab (q.symbol)); | |
6674 | } | |
6675 | } | |
6676 | ||
6677 | /* Hold the option values for the 'info module .....' sub-commands. */ | |
6678 | ||
6679 | struct info_modules_var_func_options | |
6680 | { | |
6681 | bool quiet = false; | |
6682 | char *type_regexp = nullptr; | |
6683 | char *module_regexp = nullptr; | |
6684 | ||
6685 | ~info_modules_var_func_options () | |
6686 | { | |
6687 | xfree (type_regexp); | |
6688 | xfree (module_regexp); | |
6689 | } | |
6690 | }; | |
6691 | ||
6692 | /* The options used by 'info module variables' and 'info module functions' | |
6693 | commands. */ | |
6694 | ||
6695 | static const gdb::option::option_def info_modules_var_func_options_defs [] = { | |
6696 | gdb::option::boolean_option_def<info_modules_var_func_options> { | |
6697 | "q", | |
6698 | [] (info_modules_var_func_options *opt) { return &opt->quiet; }, | |
6699 | nullptr, /* show_cmd_cb */ | |
6700 | nullptr /* set_doc */ | |
6701 | }, | |
6702 | ||
6703 | gdb::option::string_option_def<info_modules_var_func_options> { | |
6704 | "t", | |
6705 | [] (info_modules_var_func_options *opt) { return &opt->type_regexp; }, | |
6706 | nullptr, /* show_cmd_cb */ | |
6707 | nullptr /* set_doc */ | |
6708 | }, | |
6709 | ||
6710 | gdb::option::string_option_def<info_modules_var_func_options> { | |
6711 | "m", | |
6712 | [] (info_modules_var_func_options *opt) { return &opt->module_regexp; }, | |
6713 | nullptr, /* show_cmd_cb */ | |
6714 | nullptr /* set_doc */ | |
6715 | } | |
6716 | }; | |
6717 | ||
6718 | /* Return the option group used by the 'info module ...' sub-commands. */ | |
6719 | ||
6720 | static inline gdb::option::option_def_group | |
6721 | make_info_modules_var_func_options_def_group | |
6722 | (info_modules_var_func_options *opts) | |
6723 | { | |
6724 | return {{info_modules_var_func_options_defs}, opts}; | |
6725 | } | |
6726 | ||
6727 | /* Implements the 'info module functions' command. */ | |
6728 | ||
6729 | static void | |
6730 | info_module_functions_command (const char *args, int from_tty) | |
6731 | { | |
6732 | info_modules_var_func_options opts; | |
6733 | auto grp = make_info_modules_var_func_options_def_group (&opts); | |
6734 | gdb::option::process_options | |
6735 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
6736 | if (args != nullptr && *args == '\0') | |
6737 | args = nullptr; | |
6738 | ||
6739 | info_module_subcommand (opts.quiet, opts.module_regexp, args, | |
6740 | opts.type_regexp, FUNCTIONS_DOMAIN); | |
6741 | } | |
6742 | ||
6743 | /* Implements the 'info module variables' command. */ | |
6744 | ||
6745 | static void | |
6746 | info_module_variables_command (const char *args, int from_tty) | |
6747 | { | |
6748 | info_modules_var_func_options opts; | |
6749 | auto grp = make_info_modules_var_func_options_def_group (&opts); | |
6750 | gdb::option::process_options | |
6751 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
6752 | if (args != nullptr && *args == '\0') | |
6753 | args = nullptr; | |
6754 | ||
6755 | info_module_subcommand (opts.quiet, opts.module_regexp, args, | |
6756 | opts.type_regexp, VARIABLES_DOMAIN); | |
6757 | } | |
6758 | ||
6759 | /* Command completer for 'info module ...' sub-commands. */ | |
6760 | ||
6761 | static void | |
6762 | info_module_var_func_command_completer (struct cmd_list_element *ignore, | |
6763 | completion_tracker &tracker, | |
6764 | const char *text, | |
6765 | const char * /* word */) | |
6766 | { | |
6767 | ||
6768 | const auto group = make_info_modules_var_func_options_def_group (nullptr); | |
6769 | if (gdb::option::complete_options | |
6770 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
6771 | return; | |
6772 | ||
6773 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
6774 | symbol_completer (ignore, tracker, text, word); | |
6775 | } | |
6776 | ||
6777 | \f | |
6778 | ||
6c265988 | 6779 | void _initialize_symtab (); |
c906108c | 6780 | void |
6c265988 | 6781 | _initialize_symtab () |
c906108c | 6782 | { |
60cfcb20 AB |
6783 | cmd_list_element *c; |
6784 | ||
f1e6e072 TT |
6785 | initialize_ordinary_address_classes (); |
6786 | ||
60cfcb20 AB |
6787 | c = add_info ("variables", info_variables_command, |
6788 | info_print_args_help (_("\ | |
12615cba | 6789 | All global and static variable names or those matching REGEXPs.\n\ |
4acfdd20 | 6790 | Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6791 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6792 | _("global and static variables"), |
6793 | true)); | |
095252be | 6794 | set_cmd_completer_handle_brkchars (c, info_vars_funcs_command_completer); |
c906108c | 6795 | if (dbx_commands) |
60cfcb20 AB |
6796 | { |
6797 | c = add_com ("whereis", class_info, info_variables_command, | |
6798 | info_print_args_help (_("\ | |
12615cba | 6799 | All global and static variable names, or those matching REGEXPs.\n\ |
4acfdd20 | 6800 | Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6801 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6802 | _("global and static variables"), |
6803 | true)); | |
095252be | 6804 | set_cmd_completer_handle_brkchars (c, info_vars_funcs_command_completer); |
60cfcb20 | 6805 | } |
c906108c | 6806 | |
60cfcb20 AB |
6807 | c = add_info ("functions", info_functions_command, |
6808 | info_print_args_help (_("\ | |
12615cba | 6809 | All function names or those matching REGEXPs.\n\ |
4acfdd20 | 6810 | Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6811 | Prints the functions.\n"), |
4acfdd20 AB |
6812 | _("functions"), |
6813 | true)); | |
095252be | 6814 | set_cmd_completer_handle_brkchars (c, info_vars_funcs_command_completer); |
c906108c | 6815 | |
a8eab7c6 AB |
6816 | c = add_info ("types", info_types_command, _("\ |
6817 | All type names, or those matching REGEXP.\n\ | |
6818 | Usage: info types [-q] [REGEXP]\n\ | |
6819 | Print information about all types matching REGEXP, or all types if no\n\ | |
6820 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6821 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6822 | |
28cd9371 PW |
6823 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6824 | ||
6825 | static std::string info_sources_help | |
6826 | = gdb::option::build_help (_("\ | |
6827 | All source files in the program or those matching REGEXP.\n\ | |
6828 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6829 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6830 | \n\ | |
6831 | Options:\n\ | |
6832 | %OPTIONS%"), | |
6833 | info_sources_opts); | |
6834 | ||
6835 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6836 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c | 6837 | |
59c35742 AB |
6838 | c = add_info ("modules", info_modules_command, |
6839 | _("All module names, or those matching REGEXP.")); | |
6840 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
6841 | ||
0743fc83 | 6842 | add_basic_prefix_cmd ("module", class_info, _("\ |
165f8965 | 6843 | Print information about modules."), |
0743fc83 TT |
6844 | &info_module_cmdlist, "info module ", |
6845 | 0, &infolist); | |
165f8965 AB |
6846 | |
6847 | c = add_cmd ("functions", class_info, info_module_functions_command, _("\ | |
6848 | Display functions arranged by modules.\n\ | |
6849 | Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\ | |
6850 | Print a summary of all functions within each Fortran module, grouped by\n\ | |
6851 | module and file. For each function the line on which the function is\n\ | |
6852 | defined is given along with the type signature and name of the function.\n\ | |
6853 | \n\ | |
6854 | If REGEXP is provided then only functions whose name matches REGEXP are\n\ | |
6855 | listed. If MODREGEXP is provided then only functions in modules matching\n\ | |
6856 | MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\ | |
6857 | type signature matches TYPEREGEXP are listed.\n\ | |
6858 | \n\ | |
6859 | The -q flag suppresses printing some header information."), | |
6860 | &info_module_cmdlist); | |
6861 | set_cmd_completer_handle_brkchars | |
6862 | (c, info_module_var_func_command_completer); | |
6863 | ||
6864 | c = add_cmd ("variables", class_info, info_module_variables_command, _("\ | |
6865 | Display variables arranged by modules.\n\ | |
6866 | Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\ | |
6867 | Print a summary of all variables within each Fortran module, grouped by\n\ | |
6868 | module and file. For each variable the line on which the variable is\n\ | |
6869 | defined is given along with the type and name of the variable.\n\ | |
6870 | \n\ | |
6871 | If REGEXP is provided then only variables whose name matches REGEXP are\n\ | |
6872 | listed. If MODREGEXP is provided then only variables in modules matching\n\ | |
6873 | MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\ | |
6874 | type matches TYPEREGEXP are listed.\n\ | |
6875 | \n\ | |
6876 | The -q flag suppresses printing some header information."), | |
6877 | &info_module_cmdlist); | |
6878 | set_cmd_completer_handle_brkchars | |
6879 | (c, info_module_var_func_command_completer); | |
6880 | ||
c906108c | 6881 | add_com ("rbreak", class_breakpoint, rbreak_command, |
1bedd215 | 6882 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6883 | |
717d2f5a | 6884 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
dda83cd7 SM |
6885 | multiple_symbols_modes, &multiple_symbols_mode, |
6886 | _("\ | |
590042fc | 6887 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6888 | Show how the debugger handles ambiguities in expressions."), _("\ |
6889 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
dda83cd7 | 6890 | NULL, NULL, &setlist, &showlist); |
717d2f5a | 6891 | |
c011a4f4 DE |
6892 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6893 | &basenames_may_differ, _("\ | |
6894 | Set whether a source file may have multiple base names."), _("\ | |
6895 | Show whether a source file may have multiple base names."), _("\ | |
6896 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6897 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6898 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6899 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6900 | but it allows the same file be known by more than one base name.\n\ | |
6901 | If not set (the default), all source files are assumed to have just\n\ | |
6902 | one base name, and gdb will do file name comparisons more efficiently."), | |
6903 | NULL, NULL, | |
6904 | &setlist, &showlist); | |
6905 | ||
db0fec5c DE |
6906 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6907 | _("Set debugging of symbol table creation."), | |
6908 | _("Show debugging of symbol table creation."), _("\ | |
6909 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6910 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6911 | A value greater than 1 provides more verbose information."), | |
6912 | NULL, | |
6913 | NULL, | |
6914 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6915 | |
cc485e62 DE |
6916 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6917 | _("\ | |
6918 | Set debugging of symbol lookup."), _("\ | |
6919 | Show debugging of symbol lookup."), _("\ | |
6920 | When enabled (non-zero), symbol lookups are logged."), | |
6921 | NULL, NULL, | |
6922 | &setdebuglist, &showdebuglist); | |
6923 | ||
f57d2163 DE |
6924 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6925 | &new_symbol_cache_size, | |
6926 | _("Set the size of the symbol cache."), | |
6927 | _("Show the size of the symbol cache."), _("\ | |
6928 | The size of the symbol cache.\n\ | |
6929 | If zero then the symbol cache is disabled."), | |
6930 | set_symbol_cache_size_handler, NULL, | |
6931 | &maintenance_set_cmdlist, | |
6932 | &maintenance_show_cmdlist); | |
6933 | ||
6934 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6935 | _("Dump the symbol cache for each program space."), | |
6936 | &maintenanceprintlist); | |
6937 | ||
6938 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6939 | maintenance_print_symbol_cache_statistics, | |
6940 | _("Print symbol cache statistics for each program space."), | |
6941 | &maintenanceprintlist); | |
6942 | ||
50a5f187 | 6943 | add_cmd ("symbol-cache", class_maintenance, |
f57d2163 DE |
6944 | maintenance_flush_symbol_cache, |
6945 | _("Flush the symbol cache for each program space."), | |
50a5f187 AB |
6946 | &maintenanceflushlist); |
6947 | c = add_alias_cmd ("flush-symbol-cache", "flush symbol-cache", | |
6948 | class_maintenance, 0, &maintenancelist); | |
6949 | deprecate_cmd (c, "maintenancelist flush symbol-cache"); | |
f57d2163 | 6950 | |
76727919 TT |
6951 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6952 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6953 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6954 | } |