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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" |
cce0e923 | 44 | #include "fnmatch.h" |
2de7ced7 | 45 | #include "hashtab.h" |
12615cba | 46 | #include "typeprint.h" |
2de7ced7 | 47 | |
04ea0df1 | 48 | #include "gdb_obstack.h" |
fe898f56 | 49 | #include "block.h" |
de4f826b | 50 | #include "dictionary.h" |
c906108c SS |
51 | |
52 | #include <sys/types.h> | |
53 | #include <fcntl.h> | |
53ce3c39 | 54 | #include <sys/stat.h> |
c906108c | 55 | #include <ctype.h> |
015a42b4 | 56 | #include "cp-abi.h" |
71c25dea | 57 | #include "cp-support.h" |
76727919 | 58 | #include "observable.h" |
3a40aaa0 | 59 | #include "solist.h" |
9a044a89 TT |
60 | #include "macrotab.h" |
61 | #include "macroscope.h" | |
c906108c | 62 | |
270140bd | 63 | #include "parser-defs.h" |
ef0b411a | 64 | #include "completer.h" |
5ed8105e | 65 | #include "progspace-and-thread.h" |
2d7cc5c7 | 66 | #include "common/gdb_optional.h" |
bbf2f4df | 67 | #include "filename-seen-cache.h" |
46a62268 | 68 | #include "arch-utils.h" |
b9c04fb2 | 69 | #include <algorithm> |
b4987c95 | 70 | #include "common/pathstuff.h" |
ccefe4c4 | 71 | |
ff6c39cf | 72 | /* Forward declarations for local functions. */ |
c906108c | 73 | |
0b39b52e | 74 | static void rbreak_command (const char *, int); |
c906108c | 75 | |
f8eba3c6 | 76 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 77 | |
d12307c1 PMR |
78 | static struct block_symbol |
79 | lookup_symbol_aux (const char *name, | |
de63c46b | 80 | symbol_name_match_type match_type, |
d12307c1 PMR |
81 | const struct block *block, |
82 | const domain_enum domain, | |
83 | enum language language, | |
84 | struct field_of_this_result *); | |
fba7f19c | 85 | |
e4051eeb | 86 | static |
d12307c1 | 87 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 88 | symbol_name_match_type match_type, |
d12307c1 PMR |
89 | const struct block *block, |
90 | const domain_enum domain, | |
91 | enum language language); | |
8155455b | 92 | |
d12307c1 | 93 | static struct block_symbol |
fe2a438d DE |
94 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
95 | const char *name, const domain_enum domain); | |
c906108c | 96 | |
b6b80672 PA |
97 | /* See symtab.h. */ |
98 | const struct block_symbol null_block_symbol = { NULL, NULL }; | |
99 | ||
32ac0d11 TT |
100 | /* Program space key for finding name and language of "main". */ |
101 | ||
102 | static const struct program_space_data *main_progspace_key; | |
103 | ||
104 | /* Type of the data stored on the program space. */ | |
105 | ||
106 | struct main_info | |
107 | { | |
108 | /* Name of "main". */ | |
109 | ||
110 | char *name_of_main; | |
111 | ||
112 | /* Language of "main". */ | |
113 | ||
114 | enum language language_of_main; | |
115 | }; | |
116 | ||
f57d2163 DE |
117 | /* Program space key for finding its symbol cache. */ |
118 | ||
119 | static const struct program_space_data *symbol_cache_key; | |
120 | ||
121 | /* The default symbol cache size. | |
122 | There is no extra cpu cost for large N (except when flushing the cache, | |
123 | which is rare). The value here is just a first attempt. A better default | |
124 | value may be higher or lower. A prime number can make up for a bad hash | |
125 | computation, so that's why the number is what it is. */ | |
126 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
127 | ||
128 | /* The maximum symbol cache size. | |
129 | There's no method to the decision of what value to use here, other than | |
130 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
131 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
132 | ||
133 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
134 | symbol in any objfile. */ | |
d12307c1 PMR |
135 | #define SYMBOL_LOOKUP_FAILED \ |
136 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
137 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
138 | |
139 | /* Recording lookups that don't find the symbol is just as important, if not | |
140 | more so, than recording found symbols. */ | |
141 | ||
142 | enum symbol_cache_slot_state | |
143 | { | |
144 | SYMBOL_SLOT_UNUSED, | |
145 | SYMBOL_SLOT_NOT_FOUND, | |
146 | SYMBOL_SLOT_FOUND | |
147 | }; | |
148 | ||
52059ffd TT |
149 | struct symbol_cache_slot |
150 | { | |
151 | enum symbol_cache_slot_state state; | |
152 | ||
153 | /* The objfile that was current when the symbol was looked up. | |
154 | This is only needed for global blocks, but for simplicity's sake | |
155 | we allocate the space for both. If data shows the extra space used | |
156 | for static blocks is a problem, we can split things up then. | |
157 | ||
158 | Global blocks need cache lookup to include the objfile context because | |
159 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
160 | which can traverse objfiles in, effectively, any order, depending on | |
161 | the current objfile, thus affecting which symbol is found. Normally, | |
162 | only the current objfile is searched first, and then the rest are | |
163 | searched in recorded order; but putting cache lookup inside | |
164 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
165 | Instead we just make the current objfile part of the context of | |
166 | cache lookup. This means we can record the same symbol multiple times, | |
167 | each with a different "current objfile" that was in effect when the | |
168 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
169 | const struct objfile *objfile_context; | |
170 | ||
171 | union | |
172 | { | |
d12307c1 | 173 | struct block_symbol found; |
52059ffd TT |
174 | struct |
175 | { | |
176 | char *name; | |
177 | domain_enum domain; | |
178 | } not_found; | |
179 | } value; | |
180 | }; | |
181 | ||
f57d2163 DE |
182 | /* Symbols don't specify global vs static block. |
183 | So keep them in separate caches. */ | |
184 | ||
185 | struct block_symbol_cache | |
186 | { | |
187 | unsigned int hits; | |
188 | unsigned int misses; | |
189 | unsigned int collisions; | |
190 | ||
191 | /* SYMBOLS is a variable length array of this size. | |
192 | One can imagine that in general one cache (global/static) should be a | |
193 | fraction of the size of the other, but there's no data at the moment | |
194 | on which to decide. */ | |
195 | unsigned int size; | |
196 | ||
52059ffd | 197 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
198 | }; |
199 | ||
200 | /* The symbol cache. | |
201 | ||
202 | Searching for symbols in the static and global blocks over multiple objfiles | |
203 | again and again can be slow, as can searching very big objfiles. This is a | |
204 | simple cache to improve symbol lookup performance, which is critical to | |
205 | overall gdb performance. | |
206 | ||
207 | Symbols are hashed on the name, its domain, and block. | |
208 | They are also hashed on their objfile for objfile-specific lookups. */ | |
209 | ||
210 | struct symbol_cache | |
211 | { | |
212 | struct block_symbol_cache *global_symbols; | |
213 | struct block_symbol_cache *static_symbols; | |
214 | }; | |
215 | ||
45cfd468 | 216 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 217 | unsigned int symtab_create_debug = 0; |
45cfd468 | 218 | |
cc485e62 DE |
219 | /* When non-zero, print debugging messages related to symbol lookup. */ |
220 | unsigned int symbol_lookup_debug = 0; | |
221 | ||
f57d2163 DE |
222 | /* The size of the cache is staged here. */ |
223 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
224 | ||
225 | /* The current value of the symbol cache size. | |
226 | This is saved so that if the user enters a value too big we can restore | |
227 | the original value from here. */ | |
228 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
229 | ||
c011a4f4 DE |
230 | /* Non-zero if a file may be known by two different basenames. |
231 | This is the uncommon case, and significantly slows down gdb. | |
232 | Default set to "off" to not slow down the common case. */ | |
233 | int basenames_may_differ = 0; | |
234 | ||
717d2f5a JB |
235 | /* Allow the user to configure the debugger behavior with respect |
236 | to multiple-choice menus when more than one symbol matches during | |
237 | a symbol lookup. */ | |
238 | ||
7fc830e2 MK |
239 | const char multiple_symbols_ask[] = "ask"; |
240 | const char multiple_symbols_all[] = "all"; | |
241 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 242 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
243 | { |
244 | multiple_symbols_ask, | |
245 | multiple_symbols_all, | |
246 | multiple_symbols_cancel, | |
247 | NULL | |
248 | }; | |
249 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
250 | ||
251 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
252 | ||
253 | const char * | |
254 | multiple_symbols_select_mode (void) | |
255 | { | |
256 | return multiple_symbols_mode; | |
257 | } | |
258 | ||
20c681d1 DE |
259 | /* Return the name of a domain_enum. */ |
260 | ||
261 | const char * | |
262 | domain_name (domain_enum e) | |
263 | { | |
264 | switch (e) | |
265 | { | |
266 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
267 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
268 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 269 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
270 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
271 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
272 | default: gdb_assert_not_reached ("bad domain_enum"); | |
273 | } | |
274 | } | |
275 | ||
276 | /* Return the name of a search_domain . */ | |
277 | ||
278 | const char * | |
279 | search_domain_name (enum search_domain e) | |
280 | { | |
281 | switch (e) | |
282 | { | |
283 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
284 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
285 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
286 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
287 | default: gdb_assert_not_reached ("bad search_domain"); | |
288 | } | |
289 | } | |
290 | ||
43f3e411 | 291 | /* See symtab.h. */ |
db0fec5c | 292 | |
43f3e411 DE |
293 | struct symtab * |
294 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 295 | { |
43f3e411 | 296 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 297 | |
43f3e411 DE |
298 | /* The primary file symtab is the first one in the list. */ |
299 | return COMPUNIT_FILETABS (cust); | |
300 | } | |
301 | ||
302 | /* See symtab.h. */ | |
303 | ||
304 | enum language | |
305 | compunit_language (const struct compunit_symtab *cust) | |
306 | { | |
307 | struct symtab *symtab = compunit_primary_filetab (cust); | |
308 | ||
309 | /* The language of the compunit symtab is the language of its primary | |
310 | source file. */ | |
311 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
312 | } |
313 | ||
4aac40c8 TT |
314 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
315 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
316 | describes what we advertise). Returns true if they match, false |
317 | otherwise. */ | |
4aac40c8 TT |
318 | |
319 | int | |
b57a636e | 320 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
321 | { |
322 | int len = strlen (filename); | |
b57a636e | 323 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
324 | |
325 | if (len < search_len) | |
326 | return 0; | |
327 | ||
328 | /* The tail of FILENAME must match. */ | |
329 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
330 | return 0; | |
331 | ||
332 | /* Either the names must completely match, or the character | |
333 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
334 | directory separator. |
335 | ||
af529f8f JK |
336 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
337 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
338 | absolute path. The sama applies for "c:\file.c" possibly | |
339 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
340 | ||
d84fca2c JK |
341 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
342 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
343 | to put the "c:file.c" name into debug info. Such compatibility | |
344 | works only on GDB built for DOS host. */ | |
4aac40c8 | 345 | return (len == search_len |
af529f8f JK |
346 | || (!IS_ABSOLUTE_PATH (search_name) |
347 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
348 | || (HAS_DRIVE_SPEC (filename) |
349 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
350 | } | |
351 | ||
cce0e923 DE |
352 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
353 | Heads up on the order of the arguments. They match the order of | |
354 | compare_filenames_for_search, but it's the opposite of the order of | |
355 | arguments to gdb_filename_fnmatch. */ | |
356 | ||
357 | int | |
358 | compare_glob_filenames_for_search (const char *filename, | |
359 | const char *search_name) | |
360 | { | |
361 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
362 | all /s have to be explicitly specified. */ | |
363 | int file_path_elements = count_path_elements (filename); | |
364 | int search_path_elements = count_path_elements (search_name); | |
365 | ||
366 | if (search_path_elements > file_path_elements) | |
367 | return 0; | |
368 | ||
369 | if (IS_ABSOLUTE_PATH (search_name)) | |
370 | { | |
371 | return (search_path_elements == file_path_elements | |
372 | && gdb_filename_fnmatch (search_name, filename, | |
373 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
374 | } | |
375 | ||
376 | { | |
377 | const char *file_to_compare | |
378 | = strip_leading_path_elements (filename, | |
379 | file_path_elements - search_path_elements); | |
380 | ||
381 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
382 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
383 | } | |
384 | } | |
385 | ||
f8eba3c6 TT |
386 | /* Check for a symtab of a specific name by searching some symtabs. |
387 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 388 | |
b2d23133 DE |
389 | If NAME is not absolute, then REAL_PATH is NULL |
390 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
391 | ||
14bc53a8 PA |
392 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
393 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 394 | |
43f3e411 DE |
395 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
396 | Each symtab within the specified compunit symtab is also searched. | |
397 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
398 | search until the end of the list. */ |
399 | ||
14bc53a8 | 400 | bool |
f8eba3c6 | 401 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 402 | const char *real_path, |
43f3e411 | 403 | struct compunit_symtab *first, |
14bc53a8 PA |
404 | struct compunit_symtab *after_last, |
405 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 406 | { |
43f3e411 | 407 | struct compunit_symtab *cust; |
c011a4f4 | 408 | const char* base_name = lbasename (name); |
1f84b619 | 409 | |
43f3e411 | 410 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 411 | { |
5accd1a0 | 412 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 413 | { |
43f3e411 DE |
414 | if (compare_filenames_for_search (s->filename, name)) |
415 | { | |
14bc53a8 PA |
416 | if (callback (s)) |
417 | return true; | |
43f3e411 DE |
418 | continue; |
419 | } | |
a94e8645 | 420 | |
43f3e411 DE |
421 | /* Before we invoke realpath, which can get expensive when many |
422 | files are involved, do a quick comparison of the basenames. */ | |
423 | if (! basenames_may_differ | |
424 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
425 | continue; | |
a94e8645 | 426 | |
43f3e411 | 427 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 428 | { |
14bc53a8 PA |
429 | if (callback (s)) |
430 | return true; | |
a94e8645 DE |
431 | continue; |
432 | } | |
43f3e411 DE |
433 | |
434 | /* If the user gave us an absolute path, try to find the file in | |
435 | this symtab and use its absolute path. */ | |
436 | if (real_path != NULL) | |
437 | { | |
438 | const char *fullname = symtab_to_fullname (s); | |
439 | ||
440 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
441 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
442 | if (FILENAME_CMP (real_path, fullname) == 0) | |
443 | { | |
14bc53a8 PA |
444 | if (callback (s)) |
445 | return true; | |
43f3e411 DE |
446 | continue; |
447 | } | |
448 | } | |
a94e8645 | 449 | } |
f8eba3c6 | 450 | } |
58d370e0 | 451 | |
14bc53a8 | 452 | return false; |
f8eba3c6 TT |
453 | } |
454 | ||
455 | /* Check for a symtab of a specific name; first in symtabs, then in | |
456 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
457 | in the symtab filename will also work. | |
458 | ||
14bc53a8 PA |
459 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
460 | true, the search stops. */ | |
f8eba3c6 TT |
461 | |
462 | void | |
463 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 464 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 465 | { |
14bc53a8 | 466 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
467 | |
468 | /* Here we are interested in canonicalizing an absolute path, not | |
469 | absolutizing a relative path. */ | |
470 | if (IS_ABSOLUTE_PATH (name)) | |
471 | { | |
14278e1f | 472 | real_path = gdb_realpath (name); |
14bc53a8 | 473 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
474 | } |
475 | ||
aed57c53 | 476 | for (objfile *objfile : all_objfiles (current_program_space)) |
14bc53a8 PA |
477 | { |
478 | if (iterate_over_some_symtabs (name, real_path.get (), | |
479 | objfile->compunit_symtabs, NULL, | |
480 | callback)) | |
f8eba3c6 | 481 | return; |
14bc53a8 | 482 | } |
f8eba3c6 | 483 | |
c906108c SS |
484 | /* Same search rules as above apply here, but now we look thru the |
485 | psymtabs. */ | |
486 | ||
aed57c53 | 487 | for (objfile *objfile : all_objfiles (current_program_space)) |
14bc53a8 PA |
488 | { |
489 | if (objfile->sf | |
490 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
491 | name, | |
492 | real_path.get (), | |
493 | callback)) | |
f8eba3c6 | 494 | return; |
14bc53a8 | 495 | } |
c906108c | 496 | } |
f8eba3c6 TT |
497 | |
498 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
499 | symtab, or NULL. */ | |
500 | ||
501 | struct symtab * | |
502 | lookup_symtab (const char *name) | |
503 | { | |
504 | struct symtab *result = NULL; | |
505 | ||
14bc53a8 PA |
506 | iterate_over_symtabs (name, [&] (symtab *symtab) |
507 | { | |
508 | result = symtab; | |
509 | return true; | |
510 | }); | |
511 | ||
f8eba3c6 TT |
512 | return result; |
513 | } | |
514 | ||
c906108c SS |
515 | \f |
516 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
517 | full method name, which consist of the class name (from T), the unadorned | |
518 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 519 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
520 | |
521 | char * | |
fba45db2 | 522 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
523 | { |
524 | int mangled_name_len; | |
525 | char *mangled_name; | |
526 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
527 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 528 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 529 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 530 | const char *newname = TYPE_NAME (type); |
c906108c SS |
531 | |
532 | /* Does the form of physname indicate that it is the full mangled name | |
533 | of a constructor (not just the args)? */ | |
534 | int is_full_physname_constructor; | |
535 | ||
536 | int is_constructor; | |
015a42b4 | 537 | int is_destructor = is_destructor_name (physname); |
c906108c | 538 | /* Need a new type prefix. */ |
e6a959d6 PA |
539 | const char *const_prefix = method->is_const ? "C" : ""; |
540 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
541 | char buf[20]; |
542 | int len = (newname == NULL ? 0 : strlen (newname)); | |
543 | ||
43630227 PS |
544 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
545 | or an operator name. */ | |
546 | if ((physname[0] == '_' && physname[1] == 'Z') | |
547 | || is_operator_name (field_name)) | |
235d1e03 EZ |
548 | return xstrdup (physname); |
549 | ||
015a42b4 | 550 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 551 | |
3e43a32a MS |
552 | is_constructor = is_full_physname_constructor |
553 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
554 | |
555 | if (!is_destructor) | |
61012eef | 556 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
557 | |
558 | if (is_destructor || is_full_physname_constructor) | |
559 | { | |
c5aa993b JM |
560 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
561 | strcpy (mangled_name, physname); | |
c906108c SS |
562 | return mangled_name; |
563 | } | |
564 | ||
565 | if (len == 0) | |
566 | { | |
8c042590 | 567 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
568 | } |
569 | else if (physname[0] == 't' || physname[0] == 'Q') | |
570 | { | |
571 | /* The physname for template and qualified methods already includes | |
c5aa993b | 572 | the class name. */ |
8c042590 | 573 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
574 | newname = NULL; |
575 | len = 0; | |
576 | } | |
577 | else | |
578 | { | |
8c042590 PM |
579 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
580 | volatile_prefix, len); | |
c906108c SS |
581 | } |
582 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 583 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 584 | |
433759f7 MS |
585 | mangled_name = (char *) xmalloc (mangled_name_len); |
586 | if (is_constructor) | |
587 | mangled_name[0] = '\0'; | |
588 | else | |
589 | strcpy (mangled_name, field_name); | |
590 | ||
c906108c SS |
591 | strcat (mangled_name, buf); |
592 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
593 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 594 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
595 | if (newname != NULL) |
596 | strcat (mangled_name, newname); | |
597 | ||
598 | strcat (mangled_name, physname); | |
599 | return (mangled_name); | |
600 | } | |
12af6855 | 601 | |
b250c185 | 602 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 603 | correctly allocated. */ |
eca864fe | 604 | |
b250c185 SW |
605 | void |
606 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 607 | const char *name, |
ccde22c0 | 608 | struct obstack *obstack) |
b250c185 | 609 | { |
7c5fdd25 | 610 | if (gsymbol->language == language_ada) |
f85f34ed TT |
611 | { |
612 | if (name == NULL) | |
613 | { | |
614 | gsymbol->ada_mangled = 0; | |
615 | gsymbol->language_specific.obstack = obstack; | |
616 | } | |
617 | else | |
618 | { | |
619 | gsymbol->ada_mangled = 1; | |
615b3f62 | 620 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
621 | } |
622 | } | |
29df156d | 623 | else |
615b3f62 | 624 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
625 | } |
626 | ||
627 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 628 | |
0d5cff50 | 629 | const char * |
b250c185 SW |
630 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
631 | { | |
7c5fdd25 | 632 | if (gsymbol->language == language_ada) |
f85f34ed TT |
633 | { |
634 | if (!gsymbol->ada_mangled) | |
635 | return NULL; | |
636 | /* Fall through. */ | |
637 | } | |
638 | ||
615b3f62 | 639 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
640 | } |
641 | ||
12af6855 | 642 | \f |
89aad1f9 | 643 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 644 | depending upon the language for the symbol. */ |
eca864fe | 645 | |
89aad1f9 | 646 | void |
33e5013e | 647 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
648 | enum language language, |
649 | struct obstack *obstack) | |
89aad1f9 EZ |
650 | { |
651 | gsymbol->language = language; | |
7c5fdd25 DE |
652 | if (gsymbol->language == language_cplus |
653 | || gsymbol->language == language_d | |
a766d390 | 654 | || gsymbol->language == language_go |
f55ee35c JK |
655 | || gsymbol->language == language_objc |
656 | || gsymbol->language == language_fortran) | |
89aad1f9 | 657 | { |
f85f34ed TT |
658 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
659 | } | |
660 | else if (gsymbol->language == language_ada) | |
661 | { | |
662 | gdb_assert (gsymbol->ada_mangled == 0); | |
663 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 664 | } |
89aad1f9 EZ |
665 | else |
666 | { | |
667 | memset (&gsymbol->language_specific, 0, | |
668 | sizeof (gsymbol->language_specific)); | |
669 | } | |
670 | } | |
671 | ||
2de7ced7 DJ |
672 | /* Functions to initialize a symbol's mangled name. */ |
673 | ||
04a679b8 TT |
674 | /* Objects of this type are stored in the demangled name hash table. */ |
675 | struct demangled_name_entry | |
676 | { | |
9d2ceabe | 677 | const char *mangled; |
04a679b8 TT |
678 | char demangled[1]; |
679 | }; | |
680 | ||
681 | /* Hash function for the demangled name hash. */ | |
eca864fe | 682 | |
04a679b8 TT |
683 | static hashval_t |
684 | hash_demangled_name_entry (const void *data) | |
685 | { | |
19ba03f4 SM |
686 | const struct demangled_name_entry *e |
687 | = (const struct demangled_name_entry *) data; | |
433759f7 | 688 | |
04a679b8 TT |
689 | return htab_hash_string (e->mangled); |
690 | } | |
691 | ||
692 | /* Equality function for the demangled name hash. */ | |
eca864fe | 693 | |
04a679b8 TT |
694 | static int |
695 | eq_demangled_name_entry (const void *a, const void *b) | |
696 | { | |
19ba03f4 SM |
697 | const struct demangled_name_entry *da |
698 | = (const struct demangled_name_entry *) a; | |
699 | const struct demangled_name_entry *db | |
700 | = (const struct demangled_name_entry *) b; | |
433759f7 | 701 | |
04a679b8 TT |
702 | return strcmp (da->mangled, db->mangled) == 0; |
703 | } | |
704 | ||
2de7ced7 DJ |
705 | /* Create the hash table used for demangled names. Each hash entry is |
706 | a pair of strings; one for the mangled name and one for the demangled | |
707 | name. The entry is hashed via just the mangled name. */ | |
708 | ||
709 | static void | |
710 | create_demangled_names_hash (struct objfile *objfile) | |
711 | { | |
712 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 713 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
714 | Choosing a much larger table size wastes memory, and saves only about |
715 | 1% in symbol reading. */ | |
716 | ||
84a1243b | 717 | objfile->per_bfd->demangled_names_hash = htab_create_alloc |
04a679b8 | 718 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 719 | NULL, xcalloc, xfree); |
2de7ced7 | 720 | } |
12af6855 | 721 | |
2de7ced7 | 722 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
723 | language of that symbol. If the language is set to language_auto, |
724 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
725 | then set the language appropriately. The returned name is allocated |
726 | by the demangler and should be xfree'd. */ | |
12af6855 | 727 | |
2de7ced7 DJ |
728 | static char * |
729 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
730 | const char *mangled) | |
12af6855 | 731 | { |
12af6855 | 732 | char *demangled = NULL; |
8b302db8 | 733 | int i; |
12af6855 JB |
734 | |
735 | if (gsymbol->language == language_unknown) | |
736 | gsymbol->language = language_auto; | |
1bae87b9 | 737 | |
8b302db8 | 738 | if (gsymbol->language != language_auto) |
1bae87b9 | 739 | { |
8b302db8 TT |
740 | const struct language_defn *lang = language_def (gsymbol->language); |
741 | ||
742 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
743 | return demangled; | |
6aecb9c2 | 744 | } |
8b302db8 TT |
745 | |
746 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 747 | { |
8b302db8 TT |
748 | enum language l = (enum language) i; |
749 | const struct language_defn *lang = language_def (l); | |
750 | ||
751 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 752 | { |
8b302db8 | 753 | gsymbol->language = l; |
a766d390 DE |
754 | return demangled; |
755 | } | |
756 | } | |
757 | ||
2de7ced7 DJ |
758 | return NULL; |
759 | } | |
760 | ||
980cae7a | 761 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
762 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
763 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
764 | NUL-terminated, then this function assumes that NAME is already | |
765 | correctly saved (either permanently or with a lifetime tied to the | |
766 | objfile), and it will not be copied. | |
767 | ||
768 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 769 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 770 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
771 | |
772 | void | |
773 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
774 | const char *linkage_name, int len, int copy_name, |
775 | struct objfile *objfile) | |
2de7ced7 | 776 | { |
04a679b8 | 777 | struct demangled_name_entry **slot; |
980cae7a DC |
778 | /* A 0-terminated copy of the linkage name. */ |
779 | const char *linkage_name_copy; | |
04a679b8 | 780 | struct demangled_name_entry entry; |
84a1243b | 781 | struct objfile_per_bfd_storage *per_bfd = objfile->per_bfd; |
2de7ced7 | 782 | |
b06ead72 JB |
783 | if (gsymbol->language == language_ada) |
784 | { | |
785 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 786 | we can save some space by not storing the demangled name. */ |
04a679b8 | 787 | if (!copy_name) |
0d5cff50 | 788 | gsymbol->name = linkage_name; |
04a679b8 TT |
789 | else |
790 | { | |
224c3ddb SM |
791 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
792 | len + 1); | |
0d5cff50 DE |
793 | |
794 | memcpy (name, linkage_name, len); | |
795 | name[len] = '\0'; | |
796 | gsymbol->name = name; | |
04a679b8 | 797 | } |
84a1243b | 798 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
799 | |
800 | return; | |
801 | } | |
802 | ||
84a1243b | 803 | if (per_bfd->demangled_names_hash == NULL) |
04a679b8 TT |
804 | create_demangled_names_hash (objfile); |
805 | ||
9c37b5ae | 806 | if (linkage_name[len] != '\0') |
2de7ced7 | 807 | { |
980cae7a DC |
808 | char *alloc_name; |
809 | ||
9c37b5ae | 810 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 811 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 812 | alloc_name[len] = '\0'; |
980cae7a DC |
813 | |
814 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
815 | } |
816 | else | |
9c37b5ae | 817 | linkage_name_copy = linkage_name; |
2de7ced7 | 818 | |
9325300d TV |
819 | /* Set the symbol language. */ |
820 | char *demangled_name_ptr | |
821 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
822 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
823 | ||
9c37b5ae | 824 | entry.mangled = linkage_name_copy; |
04a679b8 | 825 | slot = ((struct demangled_name_entry **) |
84a1243b | 826 | htab_find_slot (per_bfd->demangled_names_hash, |
04a679b8 | 827 | &entry, INSERT)); |
2de7ced7 DJ |
828 | |
829 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
830 | if (*slot == NULL |
831 | /* A C version of the symbol may have already snuck into the table. | |
832 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
833 | || (gsymbol->language == language_go | |
834 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 835 | { |
9325300d | 836 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 837 | |
04a679b8 | 838 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 839 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
840 | mangled name saved, and we don't have a demangled name. So, |
841 | you might think we could save a little space by not recording | |
842 | this in the hash table at all. | |
843 | ||
844 | It turns out that it is actually important to still save such | |
845 | an entry in the hash table, because storing this name gives | |
705b5767 | 846 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 847 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 848 | { |
224c3ddb SM |
849 | *slot |
850 | = ((struct demangled_name_entry *) | |
851 | obstack_alloc (&per_bfd->storage_obstack, | |
852 | offsetof (struct demangled_name_entry, demangled) | |
853 | + demangled_len + 1)); | |
9c37b5ae | 854 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
855 | } |
856 | else | |
857 | { | |
9d2ceabe TT |
858 | char *mangled_ptr; |
859 | ||
04a679b8 TT |
860 | /* If we must copy the mangled name, put it directly after |
861 | the demangled name so we can have a single | |
862 | allocation. */ | |
224c3ddb SM |
863 | *slot |
864 | = ((struct demangled_name_entry *) | |
865 | obstack_alloc (&per_bfd->storage_obstack, | |
866 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 867 | + len + demangled_len + 2)); |
9d2ceabe | 868 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 869 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 870 | (*slot)->mangled = mangled_ptr; |
04a679b8 TT |
871 | } |
872 | ||
980cae7a | 873 | if (demangled_name != NULL) |
9325300d | 874 | strcpy ((*slot)->demangled, demangled_name.get()); |
2de7ced7 | 875 | else |
04a679b8 | 876 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
877 | } |
878 | ||
9c37b5ae | 879 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 880 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 881 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 882 | &per_bfd->storage_obstack); |
2de7ced7 | 883 | else |
84a1243b | 884 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
885 | } |
886 | ||
22abf04a DC |
887 | /* Return the source code name of a symbol. In languages where |
888 | demangling is necessary, this is the demangled name. */ | |
889 | ||
0d5cff50 | 890 | const char * |
22abf04a DC |
891 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
892 | { | |
9af17804 | 893 | switch (gsymbol->language) |
22abf04a | 894 | { |
1f8173e6 | 895 | case language_cplus: |
6aecb9c2 | 896 | case language_d: |
a766d390 | 897 | case language_go: |
1f8173e6 | 898 | case language_objc: |
f55ee35c | 899 | case language_fortran: |
b250c185 SW |
900 | if (symbol_get_demangled_name (gsymbol) != NULL) |
901 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
902 | break; |
903 | case language_ada: | |
f85f34ed | 904 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
905 | default: |
906 | break; | |
22abf04a | 907 | } |
1f8173e6 | 908 | return gsymbol->name; |
22abf04a DC |
909 | } |
910 | ||
9cc0d196 | 911 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 912 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 913 | |
0d5cff50 | 914 | const char * |
df8a16a1 | 915 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 916 | { |
c6e5ee5e SDJ |
917 | const char *dem_name = NULL; |
918 | ||
9af17804 | 919 | switch (gsymbol->language) |
1f8173e6 PH |
920 | { |
921 | case language_cplus: | |
6aecb9c2 | 922 | case language_d: |
a766d390 | 923 | case language_go: |
1f8173e6 | 924 | case language_objc: |
f55ee35c | 925 | case language_fortran: |
c6e5ee5e | 926 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
927 | break; |
928 | case language_ada: | |
f85f34ed | 929 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
930 | break; |
931 | default: | |
932 | break; | |
933 | } | |
c6e5ee5e | 934 | return dem_name; |
9cc0d196 | 935 | } |
fe39c653 | 936 | |
4725b721 PH |
937 | /* Return the search name of a symbol---generally the demangled or |
938 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 939 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 940 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 941 | |
0d5cff50 | 942 | const char * |
fc062ac6 JB |
943 | symbol_search_name (const struct general_symbol_info *gsymbol) |
944 | { | |
1f8173e6 PH |
945 | if (gsymbol->language == language_ada) |
946 | return gsymbol->name; | |
947 | else | |
948 | return symbol_natural_name (gsymbol); | |
4725b721 | 949 | } |
b5ec771e PA |
950 | |
951 | /* See symtab.h. */ | |
952 | ||
953 | bool | |
954 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
955 | const lookup_name_info &name) | |
956 | { | |
957 | symbol_name_matcher_ftype *name_match | |
618daa93 | 958 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
959 | return name_match (symbol_search_name (gsymbol), name, NULL); |
960 | } | |
961 | ||
c906108c SS |
962 | \f |
963 | ||
94277a38 DJ |
964 | /* Return 1 if the two sections are the same, or if they could |
965 | plausibly be copies of each other, one in an original object | |
966 | file and another in a separated debug file. */ | |
967 | ||
968 | int | |
714835d5 UW |
969 | matching_obj_sections (struct obj_section *obj_first, |
970 | struct obj_section *obj_second) | |
94277a38 | 971 | { |
714835d5 UW |
972 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
973 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
974 | struct objfile *obj; |
975 | ||
976 | /* If they're the same section, then they match. */ | |
977 | if (first == second) | |
978 | return 1; | |
979 | ||
980 | /* If either is NULL, give up. */ | |
981 | if (first == NULL || second == NULL) | |
982 | return 0; | |
983 | ||
984 | /* This doesn't apply to absolute symbols. */ | |
985 | if (first->owner == NULL || second->owner == NULL) | |
986 | return 0; | |
987 | ||
988 | /* If they're in the same object file, they must be different sections. */ | |
989 | if (first->owner == second->owner) | |
990 | return 0; | |
991 | ||
992 | /* Check whether the two sections are potentially corresponding. They must | |
993 | have the same size, address, and name. We can't compare section indexes, | |
994 | which would be more reliable, because some sections may have been | |
995 | stripped. */ | |
996 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
997 | return 0; | |
998 | ||
818f79f6 | 999 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 1000 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
1001 | - bfd_get_start_address (first->owner) |
1002 | != bfd_get_section_vma (second->owner, second) | |
1003 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1004 | return 0; |
1005 | ||
1006 | if (bfd_get_section_name (first->owner, first) == NULL | |
1007 | || bfd_get_section_name (second->owner, second) == NULL | |
1008 | || strcmp (bfd_get_section_name (first->owner, first), | |
1009 | bfd_get_section_name (second->owner, second)) != 0) | |
1010 | return 0; | |
1011 | ||
1012 | /* Otherwise check that they are in corresponding objfiles. */ | |
1013 | ||
aed57c53 TT |
1014 | for (objfile *objfile : all_objfiles (current_program_space)) |
1015 | if (objfile->obfd == first->owner) | |
1016 | { | |
1017 | obj = objfile; | |
1018 | break; | |
1019 | } | |
94277a38 DJ |
1020 | gdb_assert (obj != NULL); |
1021 | ||
1022 | if (obj->separate_debug_objfile != NULL | |
1023 | && obj->separate_debug_objfile->obfd == second->owner) | |
1024 | return 1; | |
1025 | if (obj->separate_debug_objfile_backlink != NULL | |
1026 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1027 | return 1; | |
1028 | ||
1029 | return 0; | |
1030 | } | |
c5aa993b | 1031 | |
2097ae25 DE |
1032 | /* See symtab.h. */ |
1033 | ||
1034 | void | |
1035 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1036 | { |
77e371c0 | 1037 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1038 | |
1039 | /* If we know that this is not a text address, return failure. This is | |
1040 | necessary because we loop based on texthigh and textlow, which do | |
1041 | not include the data ranges. */ | |
77e371c0 TT |
1042 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1043 | if (msymbol.minsym | |
1044 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
1045 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
1046 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
1047 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
1048 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
2097ae25 | 1049 | return; |
c906108c | 1050 | |
aed57c53 TT |
1051 | for (objfile *objfile : all_objfiles (current_program_space)) |
1052 | { | |
1053 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1054 | |
aed57c53 TT |
1055 | if (objfile->sf) |
1056 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1057 | pc, section, 0); | |
1058 | if (cust) | |
1059 | return; | |
1060 | } | |
c906108c | 1061 | } |
c906108c | 1062 | \f |
f57d2163 DE |
1063 | /* Hash function for the symbol cache. */ |
1064 | ||
1065 | static unsigned int | |
1066 | hash_symbol_entry (const struct objfile *objfile_context, | |
1067 | const char *name, domain_enum domain) | |
1068 | { | |
1069 | unsigned int hash = (uintptr_t) objfile_context; | |
1070 | ||
1071 | if (name != NULL) | |
1072 | hash += htab_hash_string (name); | |
1073 | ||
2c26b84f DE |
1074 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1075 | to map to the same slot. */ | |
1076 | if (domain == STRUCT_DOMAIN) | |
1077 | hash += VAR_DOMAIN * 7; | |
1078 | else | |
1079 | hash += domain * 7; | |
f57d2163 DE |
1080 | |
1081 | return hash; | |
1082 | } | |
1083 | ||
1084 | /* Equality function for the symbol cache. */ | |
1085 | ||
1086 | static int | |
1087 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1088 | const struct objfile *objfile_context, | |
1089 | const char *name, domain_enum domain) | |
1090 | { | |
1091 | const char *slot_name; | |
1092 | domain_enum slot_domain; | |
1093 | ||
1094 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1095 | return 0; | |
1096 | ||
1097 | if (slot->objfile_context != objfile_context) | |
1098 | return 0; | |
1099 | ||
1100 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1101 | { | |
1102 | slot_name = slot->value.not_found.name; | |
1103 | slot_domain = slot->value.not_found.domain; | |
1104 | } | |
1105 | else | |
1106 | { | |
d12307c1 PMR |
1107 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1108 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1109 | } |
1110 | ||
1111 | /* NULL names match. */ | |
1112 | if (slot_name == NULL && name == NULL) | |
1113 | { | |
1114 | /* But there's no point in calling symbol_matches_domain in the | |
1115 | SYMBOL_SLOT_FOUND case. */ | |
1116 | if (slot_domain != domain) | |
1117 | return 0; | |
1118 | } | |
1119 | else if (slot_name != NULL && name != NULL) | |
1120 | { | |
b5ec771e PA |
1121 | /* It's important that we use the same comparison that was done |
1122 | the first time through. If the slot records a found symbol, | |
1123 | then this means using the symbol name comparison function of | |
1124 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1125 | dictionary.c. It also means using symbol_matches_domain for | |
1126 | found symbols. See block.c. | |
f57d2163 DE |
1127 | |
1128 | If the slot records a not-found symbol, then require a precise match. | |
1129 | We could still be lax with whitespace like strcmp_iw though. */ | |
1130 | ||
1131 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1132 | { | |
1133 | if (strcmp (slot_name, name) != 0) | |
1134 | return 0; | |
1135 | if (slot_domain != domain) | |
1136 | return 0; | |
1137 | } | |
1138 | else | |
1139 | { | |
d12307c1 | 1140 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1141 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1142 | |
b5ec771e | 1143 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1144 | return 0; |
b5ec771e | 1145 | |
f57d2163 DE |
1146 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1147 | slot_domain, domain)) | |
1148 | return 0; | |
1149 | } | |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | /* Only one name is NULL. */ | |
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | return 1; | |
1158 | } | |
1159 | ||
1160 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1161 | length array) in bytes. */ | |
1162 | ||
1163 | static size_t | |
1164 | symbol_cache_byte_size (unsigned int size) | |
1165 | { | |
1166 | return (sizeof (struct block_symbol_cache) | |
1167 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1168 | } | |
1169 | ||
1170 | /* Resize CACHE. */ | |
1171 | ||
1172 | static void | |
1173 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1174 | { | |
1175 | /* If there's no change in size, don't do anything. | |
1176 | All caches have the same size, so we can just compare with the size | |
1177 | of the global symbols cache. */ | |
1178 | if ((cache->global_symbols != NULL | |
1179 | && cache->global_symbols->size == new_size) | |
1180 | || (cache->global_symbols == NULL | |
1181 | && new_size == 0)) | |
1182 | return; | |
1183 | ||
1184 | xfree (cache->global_symbols); | |
1185 | xfree (cache->static_symbols); | |
1186 | ||
1187 | if (new_size == 0) | |
1188 | { | |
1189 | cache->global_symbols = NULL; | |
1190 | cache->static_symbols = NULL; | |
1191 | } | |
1192 | else | |
1193 | { | |
1194 | size_t total_size = symbol_cache_byte_size (new_size); | |
1195 | ||
224c3ddb SM |
1196 | cache->global_symbols |
1197 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1198 | cache->static_symbols | |
1199 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1200 | cache->global_symbols->size = new_size; |
1201 | cache->static_symbols->size = new_size; | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | /* Make a symbol cache of size SIZE. */ | |
1206 | ||
1207 | static struct symbol_cache * | |
1208 | make_symbol_cache (unsigned int size) | |
1209 | { | |
1210 | struct symbol_cache *cache; | |
1211 | ||
1212 | cache = XCNEW (struct symbol_cache); | |
1213 | resize_symbol_cache (cache, symbol_cache_size); | |
1214 | return cache; | |
1215 | } | |
1216 | ||
1217 | /* Free the space used by CACHE. */ | |
1218 | ||
1219 | static void | |
1220 | free_symbol_cache (struct symbol_cache *cache) | |
1221 | { | |
1222 | xfree (cache->global_symbols); | |
1223 | xfree (cache->static_symbols); | |
1224 | xfree (cache); | |
1225 | } | |
1226 | ||
1227 | /* Return the symbol cache of PSPACE. | |
1228 | Create one if it doesn't exist yet. */ | |
1229 | ||
1230 | static struct symbol_cache * | |
1231 | get_symbol_cache (struct program_space *pspace) | |
1232 | { | |
19ba03f4 SM |
1233 | struct symbol_cache *cache |
1234 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1235 | |
1236 | if (cache == NULL) | |
1237 | { | |
1238 | cache = make_symbol_cache (symbol_cache_size); | |
1239 | set_program_space_data (pspace, symbol_cache_key, cache); | |
1240 | } | |
1241 | ||
1242 | return cache; | |
1243 | } | |
1244 | ||
1245 | /* Delete the symbol cache of PSPACE. | |
1246 | Called when PSPACE is destroyed. */ | |
1247 | ||
1248 | static void | |
1249 | symbol_cache_cleanup (struct program_space *pspace, void *data) | |
1250 | { | |
19ba03f4 | 1251 | struct symbol_cache *cache = (struct symbol_cache *) data; |
f57d2163 DE |
1252 | |
1253 | free_symbol_cache (cache); | |
1254 | } | |
1255 | ||
1256 | /* Set the size of the symbol cache in all program spaces. */ | |
1257 | ||
1258 | static void | |
1259 | set_symbol_cache_size (unsigned int new_size) | |
1260 | { | |
1261 | struct program_space *pspace; | |
1262 | ||
1263 | ALL_PSPACES (pspace) | |
1264 | { | |
1265 | struct symbol_cache *cache | |
19ba03f4 | 1266 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); |
f57d2163 DE |
1267 | |
1268 | /* The pspace could have been created but not have a cache yet. */ | |
1269 | if (cache != NULL) | |
1270 | resize_symbol_cache (cache, new_size); | |
1271 | } | |
1272 | } | |
1273 | ||
1274 | /* Called when symbol-cache-size is set. */ | |
1275 | ||
1276 | static void | |
eb4c3f4a | 1277 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1278 | struct cmd_list_element *c) |
1279 | { | |
1280 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1281 | { | |
1282 | /* Restore the previous value. | |
1283 | This is the value the "show" command prints. */ | |
1284 | new_symbol_cache_size = symbol_cache_size; | |
1285 | ||
1286 | error (_("Symbol cache size is too large, max is %u."), | |
1287 | MAX_SYMBOL_CACHE_SIZE); | |
1288 | } | |
1289 | symbol_cache_size = new_symbol_cache_size; | |
1290 | ||
1291 | set_symbol_cache_size (symbol_cache_size); | |
1292 | } | |
1293 | ||
1294 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1295 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1296 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1297 | failed (and thus this one will too), or NULL if the symbol is not present | |
1298 | in the cache. | |
2c26b84f DE |
1299 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1300 | set to the cache and slot of the symbol to save the result of a full lookup | |
1301 | attempt. */ | |
f57d2163 | 1302 | |
d12307c1 | 1303 | static struct block_symbol |
f57d2163 DE |
1304 | symbol_cache_lookup (struct symbol_cache *cache, |
1305 | struct objfile *objfile_context, int block, | |
1306 | const char *name, domain_enum domain, | |
1307 | struct block_symbol_cache **bsc_ptr, | |
1308 | struct symbol_cache_slot **slot_ptr) | |
1309 | { | |
1310 | struct block_symbol_cache *bsc; | |
1311 | unsigned int hash; | |
1312 | struct symbol_cache_slot *slot; | |
1313 | ||
1314 | if (block == GLOBAL_BLOCK) | |
1315 | bsc = cache->global_symbols; | |
1316 | else | |
1317 | bsc = cache->static_symbols; | |
1318 | if (bsc == NULL) | |
1319 | { | |
1320 | *bsc_ptr = NULL; | |
1321 | *slot_ptr = NULL; | |
d12307c1 | 1322 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1323 | } |
1324 | ||
1325 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1326 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1327 | |
1328 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1329 | { | |
1330 | if (symbol_lookup_debug) | |
1331 | fprintf_unfiltered (gdb_stdlog, | |
1332 | "%s block symbol cache hit%s for %s, %s\n", | |
1333 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1334 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1335 | ? " (not found)" : "", | |
1336 | name, domain_name (domain)); | |
1337 | ++bsc->hits; | |
1338 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1339 | return SYMBOL_LOOKUP_FAILED; | |
1340 | return slot->value.found; | |
1341 | } | |
1342 | ||
2c26b84f DE |
1343 | /* Symbol is not present in the cache. */ |
1344 | ||
1345 | *bsc_ptr = bsc; | |
1346 | *slot_ptr = slot; | |
1347 | ||
f57d2163 DE |
1348 | if (symbol_lookup_debug) |
1349 | { | |
1350 | fprintf_unfiltered (gdb_stdlog, | |
1351 | "%s block symbol cache miss for %s, %s\n", | |
1352 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1353 | name, domain_name (domain)); | |
1354 | } | |
1355 | ++bsc->misses; | |
d12307c1 | 1356 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1357 | } |
1358 | ||
1359 | /* Clear out SLOT. */ | |
1360 | ||
1361 | static void | |
1362 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1363 | { | |
1364 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1365 | xfree (slot->value.not_found.name); | |
1366 | slot->state = SYMBOL_SLOT_UNUSED; | |
1367 | } | |
1368 | ||
1369 | /* Mark SYMBOL as found in SLOT. | |
1370 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1371 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1372 | necessarily the objfile the symbol was found in. */ | |
1373 | ||
1374 | static void | |
1375 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1376 | struct symbol_cache_slot *slot, | |
1377 | struct objfile *objfile_context, | |
d12307c1 PMR |
1378 | struct symbol *symbol, |
1379 | const struct block *block) | |
f57d2163 DE |
1380 | { |
1381 | if (bsc == NULL) | |
1382 | return; | |
1383 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1384 | { | |
1385 | ++bsc->collisions; | |
1386 | symbol_cache_clear_slot (slot); | |
1387 | } | |
1388 | slot->state = SYMBOL_SLOT_FOUND; | |
1389 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1390 | slot->value.found.symbol = symbol; |
1391 | slot->value.found.block = block; | |
f57d2163 DE |
1392 | } |
1393 | ||
1394 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1395 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1396 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1397 | ||
1398 | static void | |
1399 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1400 | struct symbol_cache_slot *slot, | |
1401 | struct objfile *objfile_context, | |
1402 | const char *name, domain_enum domain) | |
1403 | { | |
1404 | if (bsc == NULL) | |
1405 | return; | |
1406 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1407 | { | |
1408 | ++bsc->collisions; | |
1409 | symbol_cache_clear_slot (slot); | |
1410 | } | |
1411 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1412 | slot->objfile_context = objfile_context; | |
1413 | slot->value.not_found.name = xstrdup (name); | |
1414 | slot->value.not_found.domain = domain; | |
1415 | } | |
1416 | ||
1417 | /* Flush the symbol cache of PSPACE. */ | |
1418 | ||
1419 | static void | |
1420 | symbol_cache_flush (struct program_space *pspace) | |
1421 | { | |
19ba03f4 SM |
1422 | struct symbol_cache *cache |
1423 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 | 1424 | int pass; |
f57d2163 DE |
1425 | |
1426 | if (cache == NULL) | |
1427 | return; | |
1428 | if (cache->global_symbols == NULL) | |
1429 | { | |
1430 | gdb_assert (symbol_cache_size == 0); | |
1431 | gdb_assert (cache->static_symbols == NULL); | |
1432 | return; | |
1433 | } | |
1434 | ||
1435 | /* If the cache is untouched since the last flush, early exit. | |
1436 | This is important for performance during the startup of a program linked | |
1437 | with 100s (or 1000s) of shared libraries. */ | |
1438 | if (cache->global_symbols->misses == 0 | |
1439 | && cache->static_symbols->misses == 0) | |
1440 | return; | |
1441 | ||
1442 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1443 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1444 | ||
1445 | for (pass = 0; pass < 2; ++pass) | |
1446 | { | |
1447 | struct block_symbol_cache *bsc | |
1448 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1449 | unsigned int i; | |
1450 | ||
1451 | for (i = 0; i < bsc->size; ++i) | |
1452 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1453 | } | |
1454 | ||
1455 | cache->global_symbols->hits = 0; | |
1456 | cache->global_symbols->misses = 0; | |
1457 | cache->global_symbols->collisions = 0; | |
1458 | cache->static_symbols->hits = 0; | |
1459 | cache->static_symbols->misses = 0; | |
1460 | cache->static_symbols->collisions = 0; | |
1461 | } | |
1462 | ||
1463 | /* Dump CACHE. */ | |
1464 | ||
1465 | static void | |
1466 | symbol_cache_dump (const struct symbol_cache *cache) | |
1467 | { | |
1468 | int pass; | |
1469 | ||
1470 | if (cache->global_symbols == NULL) | |
1471 | { | |
1472 | printf_filtered (" <disabled>\n"); | |
1473 | return; | |
1474 | } | |
1475 | ||
1476 | for (pass = 0; pass < 2; ++pass) | |
1477 | { | |
1478 | const struct block_symbol_cache *bsc | |
1479 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1480 | unsigned int i; | |
1481 | ||
1482 | if (pass == 0) | |
1483 | printf_filtered ("Global symbols:\n"); | |
1484 | else | |
1485 | printf_filtered ("Static symbols:\n"); | |
1486 | ||
1487 | for (i = 0; i < bsc->size; ++i) | |
1488 | { | |
1489 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1490 | ||
1491 | QUIT; | |
1492 | ||
1493 | switch (slot->state) | |
1494 | { | |
1495 | case SYMBOL_SLOT_UNUSED: | |
1496 | break; | |
1497 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1498 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1499 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1500 | slot->value.not_found.name, |
1501 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1502 | break; |
1503 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1504 | { |
1505 | struct symbol *found = slot->value.found.symbol; | |
1506 | const struct objfile *context = slot->objfile_context; | |
1507 | ||
1508 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1509 | host_address_to_string (context), | |
1510 | SYMBOL_PRINT_NAME (found), | |
1511 | domain_name (SYMBOL_DOMAIN (found))); | |
1512 | break; | |
1513 | } | |
f57d2163 DE |
1514 | } |
1515 | } | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | /* The "mt print symbol-cache" command. */ | |
1520 | ||
1521 | static void | |
510e5e56 | 1522 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1523 | { |
1524 | struct program_space *pspace; | |
1525 | ||
1526 | ALL_PSPACES (pspace) | |
1527 | { | |
1528 | struct symbol_cache *cache; | |
1529 | ||
1530 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1531 | pspace->num, | |
1532 | pspace->symfile_object_file != NULL | |
1533 | ? objfile_name (pspace->symfile_object_file) | |
1534 | : "(no object file)"); | |
1535 | ||
1536 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1537 | cache |
1538 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1539 | if (cache == NULL) |
1540 | printf_filtered (" <empty>\n"); | |
1541 | else | |
1542 | symbol_cache_dump (cache); | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | /* The "mt flush-symbol-cache" command. */ | |
1547 | ||
1548 | static void | |
510e5e56 | 1549 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1550 | { |
1551 | struct program_space *pspace; | |
1552 | ||
1553 | ALL_PSPACES (pspace) | |
1554 | { | |
1555 | symbol_cache_flush (pspace); | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | /* Print usage statistics of CACHE. */ | |
1560 | ||
1561 | static void | |
1562 | symbol_cache_stats (struct symbol_cache *cache) | |
1563 | { | |
1564 | int pass; | |
1565 | ||
1566 | if (cache->global_symbols == NULL) | |
1567 | { | |
1568 | printf_filtered (" <disabled>\n"); | |
1569 | return; | |
1570 | } | |
1571 | ||
1572 | for (pass = 0; pass < 2; ++pass) | |
1573 | { | |
1574 | const struct block_symbol_cache *bsc | |
1575 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1576 | ||
1577 | QUIT; | |
1578 | ||
1579 | if (pass == 0) | |
1580 | printf_filtered ("Global block cache stats:\n"); | |
1581 | else | |
1582 | printf_filtered ("Static block cache stats:\n"); | |
1583 | ||
1584 | printf_filtered (" size: %u\n", bsc->size); | |
1585 | printf_filtered (" hits: %u\n", bsc->hits); | |
1586 | printf_filtered (" misses: %u\n", bsc->misses); | |
1587 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | /* The "mt print symbol-cache-statistics" command. */ | |
1592 | ||
1593 | static void | |
510e5e56 | 1594 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1595 | { |
1596 | struct program_space *pspace; | |
1597 | ||
1598 | ALL_PSPACES (pspace) | |
1599 | { | |
1600 | struct symbol_cache *cache; | |
1601 | ||
1602 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1603 | pspace->num, | |
1604 | pspace->symfile_object_file != NULL | |
1605 | ? objfile_name (pspace->symfile_object_file) | |
1606 | : "(no object file)"); | |
1607 | ||
1608 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1609 | cache |
1610 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1611 | if (cache == NULL) |
1612 | printf_filtered (" empty, no stats available\n"); | |
1613 | else | |
1614 | symbol_cache_stats (cache); | |
1615 | } | |
1616 | } | |
1617 | ||
1618 | /* This module's 'new_objfile' observer. */ | |
1619 | ||
1620 | static void | |
1621 | symtab_new_objfile_observer (struct objfile *objfile) | |
1622 | { | |
1623 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1624 | symbol_cache_flush (current_program_space); | |
1625 | } | |
1626 | ||
1627 | /* This module's 'free_objfile' observer. */ | |
1628 | ||
1629 | static void | |
1630 | symtab_free_objfile_observer (struct objfile *objfile) | |
1631 | { | |
1632 | symbol_cache_flush (objfile->pspace); | |
1633 | } | |
1634 | \f | |
c906108c SS |
1635 | /* Debug symbols usually don't have section information. We need to dig that |
1636 | out of the minimal symbols and stash that in the debug symbol. */ | |
1637 | ||
ccefe4c4 | 1638 | void |
907fc202 UW |
1639 | fixup_section (struct general_symbol_info *ginfo, |
1640 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1641 | { |
1642 | struct minimal_symbol *msym; | |
c906108c | 1643 | |
bccdca4a UW |
1644 | /* First, check whether a minimal symbol with the same name exists |
1645 | and points to the same address. The address check is required | |
1646 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1647 | point to the function descriptor, while the debug symbol will | |
1648 | point to the actual function code. */ | |
907fc202 UW |
1649 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1650 | if (msym) | |
efd66ac6 | 1651 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1652 | else |
19e2d14b KB |
1653 | { |
1654 | /* Static, function-local variables do appear in the linker | |
1655 | (minimal) symbols, but are frequently given names that won't | |
1656 | be found via lookup_minimal_symbol(). E.g., it has been | |
1657 | observed in frv-uclinux (ELF) executables that a static, | |
1658 | function-local variable named "foo" might appear in the | |
1659 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1660 | point in attempting to extend the lookup-by-name mechanism to | |
1661 | handle this case due to the fact that there can be multiple | |
1662 | names. | |
9af17804 | 1663 | |
19e2d14b KB |
1664 | So, instead, search the section table when lookup by name has |
1665 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1666 | been relocated. If so, the relocation offset (i.e. the | |
1667 | ANOFFSET value) needs to be subtracted from these values when | |
1668 | performing the comparison. We unconditionally subtract it, | |
1669 | because, when no relocation has been performed, the ANOFFSET | |
1670 | value will simply be zero. | |
9af17804 | 1671 | |
19e2d14b KB |
1672 | The address of the symbol whose section we're fixing up HAS |
1673 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1674 | the section isn't yet known and knowing the section is | |
1675 | necessary in order to add the correct relocation value. In | |
1676 | other words, we wouldn't even be in this function (attempting | |
1677 | to compute the section) if it were already known. | |
1678 | ||
1679 | Note that it is possible to search the minimal symbols | |
1680 | (subtracting the relocation value if necessary) to find the | |
1681 | matching minimal symbol, but this is overkill and much less | |
1682 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1683 | symbol, only its section. |
1684 | ||
19e2d14b KB |
1685 | Note that this technique (of doing a section table search) |
1686 | can fail when unrelocated section addresses overlap. For | |
1687 | this reason, we still attempt a lookup by name prior to doing | |
1688 | a search of the section table. */ | |
9af17804 | 1689 | |
19e2d14b | 1690 | struct obj_section *s; |
e27d198c | 1691 | int fallback = -1; |
433759f7 | 1692 | |
19e2d14b KB |
1693 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1694 | { | |
65cf3563 | 1695 | int idx = s - objfile->sections; |
19e2d14b KB |
1696 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1697 | ||
e27d198c TT |
1698 | if (fallback == -1) |
1699 | fallback = idx; | |
1700 | ||
f1f6aadf PA |
1701 | if (obj_section_addr (s) - offset <= addr |
1702 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1703 | { |
19e2d14b KB |
1704 | ginfo->section = idx; |
1705 | return; | |
1706 | } | |
1707 | } | |
e27d198c TT |
1708 | |
1709 | /* If we didn't find the section, assume it is in the first | |
1710 | section. If there is no allocated section, then it hardly | |
1711 | matters what we pick, so just pick zero. */ | |
1712 | if (fallback == -1) | |
1713 | ginfo->section = 0; | |
1714 | else | |
1715 | ginfo->section = fallback; | |
19e2d14b | 1716 | } |
c906108c SS |
1717 | } |
1718 | ||
1719 | struct symbol * | |
fba45db2 | 1720 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1721 | { |
907fc202 UW |
1722 | CORE_ADDR addr; |
1723 | ||
c906108c SS |
1724 | if (!sym) |
1725 | return NULL; | |
1726 | ||
1994afbf DE |
1727 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1728 | return sym; | |
1729 | ||
907fc202 UW |
1730 | /* We either have an OBJFILE, or we can get at it from the sym's |
1731 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1732 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1733 | |
1734 | if (objfile == NULL) | |
08be3fe3 | 1735 | objfile = symbol_objfile (sym); |
907fc202 | 1736 | |
e27d198c TT |
1737 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1738 | return sym; | |
1739 | ||
907fc202 UW |
1740 | /* We should have an objfile by now. */ |
1741 | gdb_assert (objfile); | |
1742 | ||
1743 | switch (SYMBOL_CLASS (sym)) | |
1744 | { | |
1745 | case LOC_STATIC: | |
1746 | case LOC_LABEL: | |
907fc202 UW |
1747 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1748 | break; | |
1749 | case LOC_BLOCK: | |
2b1ffcfd | 1750 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1751 | break; |
1752 | ||
1753 | default: | |
1754 | /* Nothing else will be listed in the minsyms -- no use looking | |
1755 | it up. */ | |
1756 | return sym; | |
1757 | } | |
1758 | ||
1759 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1760 | |
1761 | return sym; | |
1762 | } | |
1763 | ||
b5ec771e PA |
1764 | /* See symtab.h. */ |
1765 | ||
1766 | demangle_for_lookup_info::demangle_for_lookup_info | |
1767 | (const lookup_name_info &lookup_name, language lang) | |
1768 | { | |
1769 | demangle_result_storage storage; | |
1770 | ||
c62446b1 PA |
1771 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1772 | { | |
1773 | gdb::unique_xmalloc_ptr<char> without_params | |
1774 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1775 | lookup_name.completion_mode ()); | |
1776 | ||
1777 | if (without_params != NULL) | |
1778 | { | |
de63c46b PA |
1779 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1780 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1781 | lang, storage); | |
c62446b1 PA |
1782 | return; |
1783 | } | |
1784 | } | |
1785 | ||
de63c46b PA |
1786 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1787 | m_demangled_name = lookup_name.name (); | |
1788 | else | |
1789 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1790 | lang, storage); | |
b5ec771e PA |
1791 | } |
1792 | ||
1793 | /* See symtab.h. */ | |
1794 | ||
1795 | const lookup_name_info & | |
1796 | lookup_name_info::match_any () | |
1797 | { | |
1798 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1799 | symbol names. */ | |
1800 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1801 | true); | |
1802 | ||
1803 | return lookup_name; | |
1804 | } | |
1805 | ||
f8eba3c6 | 1806 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1807 | lookup functions. The result can either be the input NAME |
1808 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1809 | |
2f408ecb | 1810 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1811 | Normally, Ada symbol lookups are performed using the encoded name |
1812 | rather than the demangled name, and so it might seem to make sense | |
1813 | for this function to return an encoded version of NAME. | |
1814 | Unfortunately, we cannot do this, because this function is used in | |
1815 | circumstances where it is not appropriate to try to encode NAME. | |
1816 | For instance, when displaying the frame info, we demangle the name | |
1817 | of each parameter, and then perform a symbol lookup inside our | |
1818 | function using that demangled name. In Ada, certain functions | |
1819 | have internally-generated parameters whose name contain uppercase | |
1820 | characters. Encoding those name would result in those uppercase | |
1821 | characters to become lowercase, and thus cause the symbol lookup | |
1822 | to fail. */ | |
c906108c | 1823 | |
2f408ecb | 1824 | const char * |
f8eba3c6 | 1825 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1826 | demangle_result_storage &storage) |
c906108c | 1827 | { |
9c37b5ae | 1828 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1829 | lookup, so we can always binary search. */ |
53c5240f | 1830 | if (lang == language_cplus) |
729051e6 | 1831 | { |
2f408ecb PA |
1832 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1833 | if (demangled_name != NULL) | |
1834 | return storage.set_malloc_ptr (demangled_name); | |
1835 | ||
1836 | /* If we were given a non-mangled name, canonicalize it | |
1837 | according to the language (so far only for C++). */ | |
1838 | std::string canon = cp_canonicalize_string (name); | |
1839 | if (!canon.empty ()) | |
1840 | return storage.swap_string (canon); | |
729051e6 | 1841 | } |
6aecb9c2 JB |
1842 | else if (lang == language_d) |
1843 | { | |
2f408ecb PA |
1844 | char *demangled_name = d_demangle (name, 0); |
1845 | if (demangled_name != NULL) | |
1846 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1847 | } |
a766d390 DE |
1848 | else if (lang == language_go) |
1849 | { | |
2f408ecb PA |
1850 | char *demangled_name = go_demangle (name, 0); |
1851 | if (demangled_name != NULL) | |
1852 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1853 | } |
729051e6 | 1854 | |
2f408ecb | 1855 | return name; |
f8eba3c6 TT |
1856 | } |
1857 | ||
5ffa0793 PA |
1858 | /* See symtab.h. */ |
1859 | ||
1860 | unsigned int | |
1861 | search_name_hash (enum language language, const char *search_name) | |
1862 | { | |
1863 | return language_def (language)->la_search_name_hash (search_name); | |
1864 | } | |
1865 | ||
cf901d3b | 1866 | /* See symtab.h. |
f8eba3c6 | 1867 | |
cf901d3b | 1868 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1869 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1870 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1871 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1872 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1873 | that there is C++ code below which can error(), but that probably |
1874 | doesn't affect these calls since they are looking for a known | |
1875 | variable and thus can probably assume it will never hit the C++ | |
1876 | code). */ | |
1877 | ||
d12307c1 | 1878 | struct block_symbol |
f8eba3c6 TT |
1879 | lookup_symbol_in_language (const char *name, const struct block *block, |
1880 | const domain_enum domain, enum language lang, | |
1993b719 | 1881 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1882 | { |
2f408ecb PA |
1883 | demangle_result_storage storage; |
1884 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1885 | |
de63c46b PA |
1886 | return lookup_symbol_aux (modified_name, |
1887 | symbol_name_match_type::FULL, | |
1888 | block, domain, lang, | |
2f408ecb | 1889 | is_a_field_of_this); |
fba7f19c EZ |
1890 | } |
1891 | ||
cf901d3b | 1892 | /* See symtab.h. */ |
53c5240f | 1893 | |
d12307c1 | 1894 | struct block_symbol |
53c5240f | 1895 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1896 | domain_enum domain, |
1897 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1898 | { |
1899 | return lookup_symbol_in_language (name, block, domain, | |
1900 | current_language->la_language, | |
2570f2b7 | 1901 | is_a_field_of_this); |
53c5240f PA |
1902 | } |
1903 | ||
cf901d3b | 1904 | /* See symtab.h. */ |
66a17cb6 | 1905 | |
de63c46b PA |
1906 | struct block_symbol |
1907 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1908 | domain_enum domain) | |
1909 | { | |
1910 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1911 | block, domain, language_asm, NULL); | |
1912 | } | |
1913 | ||
1914 | /* See symtab.h. */ | |
1915 | ||
d12307c1 | 1916 | struct block_symbol |
66a17cb6 TT |
1917 | lookup_language_this (const struct language_defn *lang, |
1918 | const struct block *block) | |
1919 | { | |
1920 | if (lang->la_name_of_this == NULL || block == NULL) | |
d12307c1 | 1921 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 | 1922 | |
cc485e62 DE |
1923 | if (symbol_lookup_debug > 1) |
1924 | { | |
1925 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1926 | ||
1927 | fprintf_unfiltered (gdb_stdlog, | |
1928 | "lookup_language_this (%s, %s (objfile %s))", | |
1929 | lang->la_name, host_address_to_string (block), | |
1930 | objfile_debug_name (objfile)); | |
1931 | } | |
1932 | ||
03de6823 | 1933 | while (block) |
66a17cb6 TT |
1934 | { |
1935 | struct symbol *sym; | |
1936 | ||
de63c46b PA |
1937 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1938 | symbol_name_match_type::SEARCH_NAME, | |
1939 | VAR_DOMAIN); | |
66a17cb6 | 1940 | if (sym != NULL) |
f149aabd | 1941 | { |
cc485e62 DE |
1942 | if (symbol_lookup_debug > 1) |
1943 | { | |
1944 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1945 | SYMBOL_PRINT_NAME (sym), | |
1946 | host_address_to_string (sym), | |
1947 | host_address_to_string (block)); | |
1948 | } | |
d12307c1 | 1949 | return (struct block_symbol) {sym, block}; |
f149aabd | 1950 | } |
66a17cb6 | 1951 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1952 | break; |
66a17cb6 TT |
1953 | block = BLOCK_SUPERBLOCK (block); |
1954 | } | |
03de6823 | 1955 | |
cc485e62 DE |
1956 | if (symbol_lookup_debug > 1) |
1957 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 1958 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 TT |
1959 | } |
1960 | ||
2dc3df72 TT |
1961 | /* Given TYPE, a structure/union, |
1962 | return 1 if the component named NAME from the ultimate target | |
1963 | structure/union is defined, otherwise, return 0. */ | |
1964 | ||
1965 | static int | |
1993b719 TT |
1966 | check_field (struct type *type, const char *name, |
1967 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1968 | { |
1969 | int i; | |
1970 | ||
1971 | /* The type may be a stub. */ | |
f168693b | 1972 | type = check_typedef (type); |
2dc3df72 TT |
1973 | |
1974 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1975 | { | |
1976 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1977 | ||
1978 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1979 | { |
1980 | is_a_field_of_this->type = type; | |
1981 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1982 | return 1; | |
1983 | } | |
2dc3df72 TT |
1984 | } |
1985 | ||
1986 | /* C++: If it was not found as a data field, then try to return it | |
1987 | as a pointer to a method. */ | |
1988 | ||
1989 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1990 | { | |
1991 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1992 | { |
1993 | is_a_field_of_this->type = type; | |
1994 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1995 | return 1; | |
1996 | } | |
2dc3df72 TT |
1997 | } |
1998 | ||
1999 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 2000 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2001 | return 1; |
2002 | ||
2003 | return 0; | |
2004 | } | |
2005 | ||
53c5240f | 2006 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2007 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2008 | |
d12307c1 | 2009 | static struct block_symbol |
de63c46b PA |
2010 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2011 | const struct block *block, | |
94af9270 | 2012 | const domain_enum domain, enum language language, |
1993b719 | 2013 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2014 | { |
d12307c1 | 2015 | struct block_symbol result; |
53c5240f | 2016 | const struct language_defn *langdef; |
406bc4de | 2017 | |
cc485e62 DE |
2018 | if (symbol_lookup_debug) |
2019 | { | |
2020 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2021 | ||
2022 | fprintf_unfiltered (gdb_stdlog, | |
2023 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2024 | name, host_address_to_string (block), | |
2025 | objfile != NULL | |
2026 | ? objfile_debug_name (objfile) : "NULL", | |
2027 | domain_name (domain), language_str (language)); | |
2028 | } | |
2029 | ||
9a146a11 EZ |
2030 | /* Make sure we do something sensible with is_a_field_of_this, since |
2031 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2032 | certainly use it later. If we don't set it, the contents of |
2033 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2034 | if (is_a_field_of_this != NULL) |
1993b719 | 2035 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2036 | |
e4051eeb DC |
2037 | /* Search specified block and its superiors. Don't search |
2038 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2039 | |
de63c46b | 2040 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2041 | if (result.symbol != NULL) |
cc485e62 DE |
2042 | { |
2043 | if (symbol_lookup_debug) | |
2044 | { | |
2045 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2046 | host_address_to_string (result.symbol)); |
cc485e62 | 2047 | } |
d12307c1 | 2048 | return result; |
cc485e62 | 2049 | } |
c906108c | 2050 | |
53c5240f | 2051 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2052 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2053 | |
2054 | langdef = language_def (language); | |
5f9a71c3 | 2055 | |
6592e36f TT |
2056 | /* Don't do this check if we are searching for a struct. It will |
2057 | not be found by check_field, but will be found by other | |
2058 | means. */ | |
2059 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2060 | { |
d12307c1 | 2061 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2062 | |
d12307c1 | 2063 | if (result.symbol) |
c906108c | 2064 | { |
d12307c1 | 2065 | struct type *t = result.symbol->type; |
9af17804 | 2066 | |
2b2d9e11 VP |
2067 | /* I'm not really sure that type of this can ever |
2068 | be typedefed; just be safe. */ | |
f168693b | 2069 | t = check_typedef (t); |
aa006118 | 2070 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2071 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2072 | |
2b2d9e11 VP |
2073 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2074 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2075 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2076 | langdef->la_name_of_this); |
9af17804 | 2077 | |
1993b719 | 2078 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2079 | { |
2080 | if (symbol_lookup_debug) | |
2081 | { | |
2082 | fprintf_unfiltered (gdb_stdlog, | |
2083 | "lookup_symbol_aux (...) = NULL\n"); | |
2084 | } | |
d12307c1 | 2085 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2086 | } |
c906108c SS |
2087 | } |
2088 | } | |
2089 | ||
53c5240f | 2090 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2091 | up static and global variables. */ |
c906108c | 2092 | |
d12307c1 PMR |
2093 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2094 | if (result.symbol != NULL) | |
cc485e62 DE |
2095 | { |
2096 | if (symbol_lookup_debug) | |
2097 | { | |
2098 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2099 | host_address_to_string (result.symbol)); |
cc485e62 | 2100 | } |
d12307c1 | 2101 | return result; |
cc485e62 | 2102 | } |
c906108c | 2103 | |
774b6a14 TT |
2104 | /* Now search all static file-level symbols. Not strictly correct, |
2105 | but more useful than an error. */ | |
41f62f39 | 2106 | |
d12307c1 | 2107 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2108 | if (symbol_lookup_debug) |
2109 | { | |
2110 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2111 | result.symbol != NULL |
2112 | ? host_address_to_string (result.symbol) | |
2113 | : "NULL"); | |
cc485e62 | 2114 | } |
d12307c1 | 2115 | return result; |
41f62f39 JK |
2116 | } |
2117 | ||
e4051eeb | 2118 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2119 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2120 | |
d12307c1 | 2121 | static struct block_symbol |
de63c46b PA |
2122 | lookup_local_symbol (const char *name, |
2123 | symbol_name_match_type match_type, | |
2124 | const struct block *block, | |
74016e12 DE |
2125 | const domain_enum domain, |
2126 | enum language language) | |
8155455b DC |
2127 | { |
2128 | struct symbol *sym; | |
89a9d1b1 | 2129 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2130 | const char *scope = block_scope (block); |
2131 | ||
e4051eeb DC |
2132 | /* Check if either no block is specified or it's a global block. */ |
2133 | ||
89a9d1b1 | 2134 | if (static_block == NULL) |
d12307c1 | 2135 | return (struct block_symbol) {NULL, NULL}; |
e4051eeb | 2136 | |
89a9d1b1 | 2137 | while (block != static_block) |
f61e8913 | 2138 | { |
de63c46b | 2139 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2140 | if (sym != NULL) |
d12307c1 | 2141 | return (struct block_symbol) {sym, block}; |
edb3359d | 2142 | |
f55ee35c | 2143 | if (language == language_cplus || language == language_fortran) |
13387711 | 2144 | { |
b926417a | 2145 | struct block_symbol blocksym |
d12307c1 PMR |
2146 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2147 | domain); | |
2148 | ||
b926417a TT |
2149 | if (blocksym.symbol != NULL) |
2150 | return blocksym; | |
13387711 SW |
2151 | } |
2152 | ||
edb3359d DJ |
2153 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2154 | break; | |
f61e8913 DC |
2155 | block = BLOCK_SUPERBLOCK (block); |
2156 | } | |
2157 | ||
3aee438b | 2158 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2159 | |
d12307c1 | 2160 | return (struct block_symbol) {NULL, NULL}; |
f61e8913 DC |
2161 | } |
2162 | ||
cf901d3b | 2163 | /* See symtab.h. */ |
3a40aaa0 | 2164 | |
c0201579 | 2165 | struct objfile * |
3a40aaa0 UW |
2166 | lookup_objfile_from_block (const struct block *block) |
2167 | { | |
3a40aaa0 UW |
2168 | if (block == NULL) |
2169 | return NULL; | |
2170 | ||
2171 | block = block_global_block (block); | |
43f3e411 | 2172 | /* Look through all blockvectors. */ |
d8aeb77f TT |
2173 | for (objfile *obj : all_objfiles (current_program_space)) |
2174 | { | |
2175 | for (compunit_symtab *cust : objfile_compunits (obj)) | |
2176 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), | |
2177 | GLOBAL_BLOCK)) | |
2178 | { | |
2179 | if (obj->separate_debug_objfile_backlink) | |
2180 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2181 | |
d8aeb77f TT |
2182 | return obj; |
2183 | } | |
2184 | } | |
3a40aaa0 UW |
2185 | |
2186 | return NULL; | |
2187 | } | |
2188 | ||
cf901d3b | 2189 | /* See symtab.h. */ |
f61e8913 | 2190 | |
5f9a71c3 | 2191 | struct symbol * |
de63c46b PA |
2192 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2193 | const struct block *block, | |
d1a2d36d | 2194 | const domain_enum domain) |
f61e8913 DC |
2195 | { |
2196 | struct symbol *sym; | |
f61e8913 | 2197 | |
cc485e62 DE |
2198 | if (symbol_lookup_debug > 1) |
2199 | { | |
2200 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2201 | ||
2202 | fprintf_unfiltered (gdb_stdlog, | |
2203 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2204 | name, host_address_to_string (block), | |
2205 | objfile_debug_name (objfile), | |
2206 | domain_name (domain)); | |
2207 | } | |
2208 | ||
de63c46b | 2209 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2210 | if (sym) |
8155455b | 2211 | { |
cc485e62 DE |
2212 | if (symbol_lookup_debug > 1) |
2213 | { | |
2214 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2215 | host_address_to_string (sym)); | |
2216 | } | |
21b556f4 | 2217 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2218 | } |
2219 | ||
cc485e62 DE |
2220 | if (symbol_lookup_debug > 1) |
2221 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2222 | return NULL; |
2223 | } | |
2224 | ||
cf901d3b | 2225 | /* See symtab.h. */ |
3a40aaa0 | 2226 | |
d12307c1 | 2227 | struct block_symbol |
efad9b6a | 2228 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 2229 | const char *name, |
21b556f4 | 2230 | const domain_enum domain) |
3a40aaa0 | 2231 | { |
efad9b6a | 2232 | struct objfile *objfile; |
3a40aaa0 | 2233 | |
15d123c9 TG |
2234 | for (objfile = main_objfile; |
2235 | objfile; | |
2236 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
2237 | { | |
d12307c1 PMR |
2238 | struct block_symbol result |
2239 | = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain); | |
15d123c9 | 2240 | |
d12307c1 PMR |
2241 | if (result.symbol != NULL) |
2242 | return result; | |
15d123c9 | 2243 | } |
56e3f43c | 2244 | |
d12307c1 | 2245 | return (struct block_symbol) {NULL, NULL}; |
3a40aaa0 UW |
2246 | } |
2247 | ||
19630284 JB |
2248 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2249 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2250 | depending on whether or not we want to search global symbols or |
2251 | static symbols. */ | |
2252 | ||
d12307c1 | 2253 | static struct block_symbol |
74016e12 DE |
2254 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
2255 | const char *name, const domain_enum domain) | |
19630284 | 2256 | { |
ba715d7f JK |
2257 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2258 | ||
cc485e62 DE |
2259 | if (symbol_lookup_debug > 1) |
2260 | { | |
2261 | fprintf_unfiltered (gdb_stdlog, | |
2262 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2263 | objfile_debug_name (objfile), | |
2264 | block_index == GLOBAL_BLOCK | |
2265 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2266 | name, domain_name (domain)); | |
2267 | } | |
2268 | ||
592553c4 | 2269 | for (compunit_symtab *cust : objfile_compunits (objfile)) |
a743abeb | 2270 | { |
43f3e411 DE |
2271 | const struct blockvector *bv; |
2272 | const struct block *block; | |
d12307c1 | 2273 | struct block_symbol result; |
43f3e411 DE |
2274 | |
2275 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2276 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2277 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2278 | result.block = block; | |
2279 | if (result.symbol != NULL) | |
a743abeb | 2280 | { |
cc485e62 DE |
2281 | if (symbol_lookup_debug > 1) |
2282 | { | |
2283 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2284 | host_address_to_string (result.symbol), |
cc485e62 DE |
2285 | host_address_to_string (block)); |
2286 | } | |
d12307c1 PMR |
2287 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2288 | return result; | |
2289 | ||
a743abeb DE |
2290 | } |
2291 | } | |
19630284 | 2292 | |
cc485e62 DE |
2293 | if (symbol_lookup_debug > 1) |
2294 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 2295 | return (struct block_symbol) {NULL, NULL}; |
19630284 JB |
2296 | } |
2297 | ||
74016e12 | 2298 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2299 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2300 | and all associated separate debug objfiles. |
2301 | ||
2302 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2303 | because the outer loop will cause them to be searched too. This case is | |
2304 | different. Here we're called from search_symbols where it will only | |
2305 | call us for the the objfile that contains a matching minsym. */ | |
422d65e7 | 2306 | |
d12307c1 | 2307 | static struct block_symbol |
422d65e7 DE |
2308 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2309 | const char *linkage_name, | |
2310 | domain_enum domain) | |
2311 | { | |
2312 | enum language lang = current_language->la_language; | |
422d65e7 DE |
2313 | struct objfile *main_objfile, *cur_objfile; |
2314 | ||
2f408ecb PA |
2315 | demangle_result_storage storage; |
2316 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2317 | ||
422d65e7 DE |
2318 | if (objfile->separate_debug_objfile_backlink) |
2319 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2320 | else | |
2321 | main_objfile = objfile; | |
2322 | ||
2323 | for (cur_objfile = main_objfile; | |
2324 | cur_objfile; | |
2325 | cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile)) | |
2326 | { | |
d12307c1 PMR |
2327 | struct block_symbol result; |
2328 | ||
2329 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2330 | modified_name, domain); | |
2331 | if (result.symbol == NULL) | |
2332 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2333 | modified_name, domain); | |
2334 | if (result.symbol != NULL) | |
2f408ecb | 2335 | return result; |
422d65e7 DE |
2336 | } |
2337 | ||
d12307c1 | 2338 | return (struct block_symbol) {NULL, NULL}; |
422d65e7 DE |
2339 | } |
2340 | ||
08c23b0d TT |
2341 | /* A helper function that throws an exception when a symbol was found |
2342 | in a psymtab but not in a symtab. */ | |
2343 | ||
2344 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 2345 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 2346 | struct compunit_symtab *cust) |
08c23b0d TT |
2347 | { |
2348 | error (_("\ | |
2349 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2350 | %s may be an inlined function, or may be a template function\n \ | |
2351 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2352 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2353 | name, |
2354 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2355 | name, name); | |
08c23b0d TT |
2356 | } |
2357 | ||
74016e12 DE |
2358 | /* A helper function for various lookup routines that interfaces with |
2359 | the "quick" symbol table functions. */ | |
8155455b | 2360 | |
d12307c1 | 2361 | static struct block_symbol |
74016e12 DE |
2362 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
2363 | const char *name, const domain_enum domain) | |
8155455b | 2364 | { |
43f3e411 | 2365 | struct compunit_symtab *cust; |
346d1dfe | 2366 | const struct blockvector *bv; |
8155455b | 2367 | const struct block *block; |
d12307c1 | 2368 | struct block_symbol result; |
8155455b | 2369 | |
ccefe4c4 | 2370 | if (!objfile->sf) |
d12307c1 | 2371 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2372 | |
2373 | if (symbol_lookup_debug > 1) | |
2374 | { | |
2375 | fprintf_unfiltered (gdb_stdlog, | |
2376 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2377 | objfile_debug_name (objfile), | |
2378 | block_index == GLOBAL_BLOCK | |
2379 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2380 | name, domain_name (domain)); | |
2381 | } | |
2382 | ||
43f3e411 DE |
2383 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2384 | if (cust == NULL) | |
cc485e62 DE |
2385 | { |
2386 | if (symbol_lookup_debug > 1) | |
2387 | { | |
2388 | fprintf_unfiltered (gdb_stdlog, | |
2389 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2390 | } | |
d12307c1 | 2391 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2392 | } |
8155455b | 2393 | |
43f3e411 | 2394 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2395 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2396 | result.symbol = block_lookup_symbol (block, name, |
2397 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2398 | if (result.symbol == NULL) |
43f3e411 | 2399 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2400 | |
2401 | if (symbol_lookup_debug > 1) | |
2402 | { | |
2403 | fprintf_unfiltered (gdb_stdlog, | |
2404 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2405 | host_address_to_string (result.symbol), |
cc485e62 DE |
2406 | host_address_to_string (block)); |
2407 | } | |
2408 | ||
d12307c1 PMR |
2409 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2410 | result.block = block; | |
2411 | return result; | |
8155455b DC |
2412 | } |
2413 | ||
cf901d3b | 2414 | /* See symtab.h. */ |
5f9a71c3 | 2415 | |
d12307c1 | 2416 | struct block_symbol |
f606139a DE |
2417 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2418 | const char *name, | |
5f9a71c3 | 2419 | const struct block *block, |
21b556f4 | 2420 | const domain_enum domain) |
5f9a71c3 | 2421 | { |
d12307c1 | 2422 | struct block_symbol result; |
5f9a71c3 DC |
2423 | |
2424 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2425 | this (or what turned into this) was part of lookup_symbol_aux; | |
2426 | I'm much less worried about these questions now, since these | |
2427 | decisions have turned out well, but I leave these comments here | |
2428 | for posterity. */ | |
2429 | ||
2430 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2431 | not it would be appropriate to search the current global block | |
2432 | here as well. (That's what this code used to do before the | |
2433 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2434 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2435 | next. On the other hand, if decode_line_1 is passed an argument |
2436 | like filename:var, then the user presumably wants 'var' to be | |
2437 | searched for in filename. On the third hand, there shouldn't be | |
2438 | multiple global variables all of which are named 'var', and it's | |
2439 | not like decode_line_1 has ever restricted its search to only | |
2440 | global variables in a single filename. All in all, only | |
2441 | searching the static block here seems best: it's correct and it's | |
2442 | cleanest. */ | |
2443 | ||
2444 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2445 | issue here: if you usually search for global symbols in the | |
2446 | current file, then it would be slightly better to search the | |
2447 | current global block before searching all the symtabs. But there | |
2448 | are other factors that have a much greater effect on performance | |
2449 | than that one, so I don't think we should worry about that for | |
2450 | now. */ | |
2451 | ||
d9060ba6 DE |
2452 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2453 | the current objfile. Searching the current objfile first is useful | |
2454 | for both matching user expectations as well as performance. */ | |
2455 | ||
d12307c1 PMR |
2456 | result = lookup_symbol_in_static_block (name, block, domain); |
2457 | if (result.symbol != NULL) | |
2458 | return result; | |
5f9a71c3 | 2459 | |
1994afbf DE |
2460 | /* If we didn't find a definition for a builtin type in the static block, |
2461 | search for it now. This is actually the right thing to do and can be | |
2462 | a massive performance win. E.g., when debugging a program with lots of | |
2463 | shared libraries we could search all of them only to find out the | |
2464 | builtin type isn't defined in any of them. This is common for types | |
2465 | like "void". */ | |
2466 | if (domain == VAR_DOMAIN) | |
2467 | { | |
2468 | struct gdbarch *gdbarch; | |
2469 | ||
2470 | if (block == NULL) | |
2471 | gdbarch = target_gdbarch (); | |
2472 | else | |
2473 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2474 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2475 | gdbarch, name); | |
2476 | result.block = NULL; | |
2477 | if (result.symbol != NULL) | |
2478 | return result; | |
1994afbf DE |
2479 | } |
2480 | ||
08724ab7 | 2481 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2482 | } |
2483 | ||
cf901d3b | 2484 | /* See symtab.h. */ |
5f9a71c3 | 2485 | |
d12307c1 | 2486 | struct block_symbol |
24d864bb DE |
2487 | lookup_symbol_in_static_block (const char *name, |
2488 | const struct block *block, | |
2489 | const domain_enum domain) | |
5f9a71c3 DC |
2490 | { |
2491 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2492 | struct symbol *sym; |
5f9a71c3 | 2493 | |
cc485e62 | 2494 | if (static_block == NULL) |
d12307c1 | 2495 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2496 | |
2497 | if (symbol_lookup_debug) | |
2498 | { | |
2499 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2500 | ||
2501 | fprintf_unfiltered (gdb_stdlog, | |
2502 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2503 | " %s)\n", | |
2504 | name, | |
2505 | host_address_to_string (block), | |
2506 | objfile_debug_name (objfile), | |
2507 | domain_name (domain)); | |
2508 | } | |
2509 | ||
de63c46b PA |
2510 | sym = lookup_symbol_in_block (name, |
2511 | symbol_name_match_type::FULL, | |
2512 | static_block, domain); | |
cc485e62 DE |
2513 | if (symbol_lookup_debug) |
2514 | { | |
2515 | fprintf_unfiltered (gdb_stdlog, | |
2516 | "lookup_symbol_in_static_block (...) = %s\n", | |
2517 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2518 | } | |
d12307c1 | 2519 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2520 | } |
2521 | ||
af3768e9 DE |
2522 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2523 | 1) First search expanded symtabs, and if not found | |
2524 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2525 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2526 | ||
d12307c1 | 2527 | static struct block_symbol |
af3768e9 DE |
2528 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
2529 | const char *name, const domain_enum domain) | |
2530 | { | |
d12307c1 | 2531 | struct block_symbol result; |
af3768e9 | 2532 | |
cc485e62 DE |
2533 | if (symbol_lookup_debug) |
2534 | { | |
2535 | fprintf_unfiltered (gdb_stdlog, | |
2536 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2537 | objfile_debug_name (objfile), | |
2538 | block_index == GLOBAL_BLOCK | |
2539 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2540 | name, domain_name (domain)); | |
2541 | } | |
2542 | ||
af3768e9 DE |
2543 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2544 | name, domain); | |
d12307c1 | 2545 | if (result.symbol != NULL) |
af3768e9 | 2546 | { |
cc485e62 DE |
2547 | if (symbol_lookup_debug) |
2548 | { | |
2549 | fprintf_unfiltered (gdb_stdlog, | |
2550 | "lookup_symbol_in_objfile (...) = %s" | |
2551 | " (in symtabs)\n", | |
d12307c1 | 2552 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2553 | } |
2554 | return result; | |
af3768e9 DE |
2555 | } |
2556 | ||
cc485e62 DE |
2557 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2558 | name, domain); | |
2559 | if (symbol_lookup_debug) | |
2560 | { | |
2561 | fprintf_unfiltered (gdb_stdlog, | |
2562 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2563 | result.symbol != NULL |
2564 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2565 | : "NULL", |
d12307c1 | 2566 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2567 | } |
af3768e9 DE |
2568 | return result; |
2569 | } | |
2570 | ||
2571 | /* See symtab.h. */ | |
2572 | ||
d12307c1 | 2573 | struct block_symbol |
af3768e9 DE |
2574 | lookup_static_symbol (const char *name, const domain_enum domain) |
2575 | { | |
f57d2163 | 2576 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2577 | struct block_symbol result; |
f57d2163 DE |
2578 | struct block_symbol_cache *bsc; |
2579 | struct symbol_cache_slot *slot; | |
2580 | ||
2581 | /* Lookup in STATIC_BLOCK is not current-objfile-dependent, so just pass | |
2582 | NULL for OBJFILE_CONTEXT. */ | |
2583 | result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain, | |
2584 | &bsc, &slot); | |
d12307c1 | 2585 | if (result.symbol != NULL) |
f57d2163 | 2586 | { |
d12307c1 PMR |
2587 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2588 | return (struct block_symbol) {NULL, NULL}; | |
f57d2163 DE |
2589 | return result; |
2590 | } | |
af3768e9 | 2591 | |
aed57c53 | 2592 | for (objfile *objfile : all_objfiles (current_program_space)) |
af3768e9 DE |
2593 | { |
2594 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
d12307c1 | 2595 | if (result.symbol != NULL) |
f57d2163 DE |
2596 | { |
2597 | /* Still pass NULL for OBJFILE_CONTEXT here. */ | |
d12307c1 PMR |
2598 | symbol_cache_mark_found (bsc, slot, NULL, result.symbol, |
2599 | result.block); | |
f57d2163 DE |
2600 | return result; |
2601 | } | |
af3768e9 DE |
2602 | } |
2603 | ||
f57d2163 DE |
2604 | /* Still pass NULL for OBJFILE_CONTEXT here. */ |
2605 | symbol_cache_mark_not_found (bsc, slot, NULL, name, domain); | |
d12307c1 | 2606 | return (struct block_symbol) {NULL, NULL}; |
af3768e9 DE |
2607 | } |
2608 | ||
19630284 JB |
2609 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2610 | ||
2611 | struct global_sym_lookup_data | |
2612 | { | |
2613 | /* The name of the symbol we are searching for. */ | |
2614 | const char *name; | |
2615 | ||
2616 | /* The domain to use for our search. */ | |
2617 | domain_enum domain; | |
2618 | ||
2619 | /* The field where the callback should store the symbol if found. | |
d12307c1 PMR |
2620 | It should be initialized to {NULL, NULL} before the search is started. */ |
2621 | struct block_symbol result; | |
19630284 JB |
2622 | }; |
2623 | ||
2624 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
2625 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
2626 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
2627 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
2628 | ||
2629 | static int | |
2630 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
2631 | void *cb_data) | |
2632 | { | |
2633 | struct global_sym_lookup_data *data = | |
2634 | (struct global_sym_lookup_data *) cb_data; | |
2635 | ||
d12307c1 PMR |
2636 | gdb_assert (data->result.symbol == NULL |
2637 | && data->result.block == NULL); | |
19630284 | 2638 | |
af3768e9 DE |
2639 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
2640 | data->name, data->domain); | |
19630284 JB |
2641 | |
2642 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2643 | keep going. */ | |
d12307c1 | 2644 | return (data->result.symbol != NULL); |
19630284 JB |
2645 | } |
2646 | ||
cf901d3b | 2647 | /* See symtab.h. */ |
5f9a71c3 | 2648 | |
d12307c1 | 2649 | struct block_symbol |
08724ab7 | 2650 | lookup_global_symbol (const char *name, |
3a40aaa0 | 2651 | const struct block *block, |
21b556f4 | 2652 | const domain_enum domain) |
5f9a71c3 | 2653 | { |
f57d2163 | 2654 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2655 | struct block_symbol result; |
f57d2163 | 2656 | struct objfile *objfile; |
19630284 | 2657 | struct global_sym_lookup_data lookup_data; |
f57d2163 DE |
2658 | struct block_symbol_cache *bsc; |
2659 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2660 | |
6a3ca067 | 2661 | objfile = lookup_objfile_from_block (block); |
f57d2163 DE |
2662 | |
2663 | /* First see if we can find the symbol in the cache. | |
2664 | This works because we use the current objfile to qualify the lookup. */ | |
d12307c1 PMR |
2665 | result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain, |
2666 | &bsc, &slot); | |
2667 | if (result.symbol != NULL) | |
f57d2163 | 2668 | { |
d12307c1 PMR |
2669 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2670 | return (struct block_symbol) {NULL, NULL}; | |
2671 | return result; | |
f57d2163 DE |
2672 | } |
2673 | ||
2674 | /* Call library-specific lookup procedure. */ | |
67ff19f7 | 2675 | if (objfile != NULL) |
d12307c1 | 2676 | result = solib_global_lookup (objfile, name, domain); |
b2fb95e0 | 2677 | |
f57d2163 | 2678 | /* If that didn't work go a global search (of global blocks, heh). */ |
d12307c1 | 2679 | if (result.symbol == NULL) |
f57d2163 DE |
2680 | { |
2681 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2682 | lookup_data.name = name; | |
2683 | lookup_data.domain = domain; | |
2684 | gdbarch_iterate_over_objfiles_in_search_order | |
2685 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
2686 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); | |
d12307c1 | 2687 | result = lookup_data.result; |
f57d2163 | 2688 | } |
6a3ca067 | 2689 | |
d12307c1 PMR |
2690 | if (result.symbol != NULL) |
2691 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2692 | else |
2693 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2694 | ||
d12307c1 | 2695 | return result; |
5f9a71c3 DC |
2696 | } |
2697 | ||
4186eb54 KS |
2698 | int |
2699 | symbol_matches_domain (enum language symbol_language, | |
2700 | domain_enum symbol_domain, | |
2701 | domain_enum domain) | |
2702 | { | |
2703 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2704 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2705 | if (symbol_language == language_cplus | |
2706 | || symbol_language == language_d | |
65547233 TT |
2707 | || symbol_language == language_ada |
2708 | || symbol_language == language_rust) | |
4186eb54 KS |
2709 | { |
2710 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2711 | && symbol_domain == STRUCT_DOMAIN) | |
2712 | return 1; | |
2713 | } | |
2714 | /* For all other languages, strict match is required. */ | |
2715 | return (symbol_domain == domain); | |
2716 | } | |
2717 | ||
cf901d3b | 2718 | /* See symtab.h. */ |
c906108c | 2719 | |
ccefe4c4 TT |
2720 | struct type * |
2721 | lookup_transparent_type (const char *name) | |
c906108c | 2722 | { |
ccefe4c4 TT |
2723 | return current_language->la_lookup_transparent_type (name); |
2724 | } | |
9af17804 | 2725 | |
ccefe4c4 TT |
2726 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2727 | "quick" symbol table functions. */ | |
357e46e7 | 2728 | |
ccefe4c4 | 2729 | static struct type * |
f88cb4b6 | 2730 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2731 | const char *name) |
2732 | { | |
43f3e411 | 2733 | struct compunit_symtab *cust; |
346d1dfe | 2734 | const struct blockvector *bv; |
ccefe4c4 TT |
2735 | struct block *block; |
2736 | struct symbol *sym; | |
c906108c | 2737 | |
ccefe4c4 TT |
2738 | if (!objfile->sf) |
2739 | return NULL; | |
43f3e411 DE |
2740 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2741 | STRUCT_DOMAIN); | |
2742 | if (cust == NULL) | |
ccefe4c4 | 2743 | return NULL; |
c906108c | 2744 | |
43f3e411 | 2745 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2746 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2747 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2748 | block_find_non_opaque_type, NULL); | |
2749 | if (sym == NULL) | |
43f3e411 | 2750 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2751 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2752 | return SYMBOL_TYPE (sym); | |
2753 | } | |
08c23b0d | 2754 | |
b2e2f908 DE |
2755 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2756 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2757 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2758 | ||
2759 | static struct type * | |
2760 | basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index, | |
2761 | const char *name) | |
2762 | { | |
b2e2f908 DE |
2763 | const struct blockvector *bv; |
2764 | const struct block *block; | |
2765 | const struct symbol *sym; | |
2766 | ||
592553c4 | 2767 | for (compunit_symtab *cust : objfile_compunits (objfile)) |
b2e2f908 DE |
2768 | { |
2769 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2770 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2771 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2772 | block_find_non_opaque_type, NULL); | |
2773 | if (sym != NULL) | |
2774 | { | |
2775 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2776 | return SYMBOL_TYPE (sym); | |
2777 | } | |
2778 | } | |
c906108c | 2779 | |
ccefe4c4 | 2780 | return NULL; |
b368761e | 2781 | } |
c906108c | 2782 | |
b368761e DC |
2783 | /* The standard implementation of lookup_transparent_type. This code |
2784 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2785 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2786 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2787 | global blocks. */ |
c906108c SS |
2788 | |
2789 | struct type * | |
b368761e | 2790 | basic_lookup_transparent_type (const char *name) |
c906108c | 2791 | { |
ccefe4c4 | 2792 | struct type *t; |
c906108c SS |
2793 | |
2794 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2795 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2796 | of the desired name as a global, then do psymtab-to-symtab |
2797 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2798 | |
aed57c53 TT |
2799 | for (objfile *objfile : all_objfiles (current_program_space)) |
2800 | { | |
2801 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2802 | if (t) | |
2803 | return t; | |
2804 | } | |
c906108c | 2805 | |
aed57c53 TT |
2806 | for (objfile *objfile : all_objfiles (current_program_space)) |
2807 | { | |
2808 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2809 | if (t) | |
2810 | return t; | |
2811 | } | |
c906108c SS |
2812 | |
2813 | /* Now search the static file-level symbols. | |
2814 | Not strictly correct, but more useful than an error. | |
2815 | Do the symtab's first, then | |
c378eb4e | 2816 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2817 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2818 | conversion on the fly and return the found symbol. */ |
c906108c | 2819 | |
aed57c53 TT |
2820 | for (objfile *objfile : all_objfiles (current_program_space)) |
2821 | { | |
2822 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2823 | if (t) | |
2824 | return t; | |
2825 | } | |
c906108c | 2826 | |
aed57c53 TT |
2827 | for (objfile *objfile : all_objfiles (current_program_space)) |
2828 | { | |
2829 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2830 | if (t) | |
2831 | return t; | |
2832 | } | |
ccefe4c4 | 2833 | |
c906108c SS |
2834 | return (struct type *) 0; |
2835 | } | |
2836 | ||
4eeaa230 | 2837 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
14bc53a8 PA |
2838 | |
2839 | For each symbol that matches, CALLBACK is called. The symbol is | |
2840 | passed to the callback. | |
2841 | ||
2842 | If CALLBACK returns false, the iteration ends. Otherwise, the | |
4eeaa230 | 2843 | search continues. */ |
f8eba3c6 TT |
2844 | |
2845 | void | |
b5ec771e PA |
2846 | iterate_over_symbols (const struct block *block, |
2847 | const lookup_name_info &name, | |
f8eba3c6 | 2848 | const domain_enum domain, |
14bc53a8 | 2849 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2850 | { |
4eeaa230 DE |
2851 | struct block_iterator iter; |
2852 | struct symbol *sym; | |
f8eba3c6 | 2853 | |
358d6ab3 | 2854 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2855 | { |
4186eb54 KS |
2856 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2857 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2858 | { |
7e41c8db KS |
2859 | struct block_symbol block_sym = {sym, block}; |
2860 | ||
2861 | if (!callback (&block_sym)) | |
4eeaa230 | 2862 | return; |
f8eba3c6 | 2863 | } |
f8eba3c6 TT |
2864 | } |
2865 | } | |
2866 | ||
43f3e411 DE |
2867 | /* Find the compunit symtab associated with PC and SECTION. |
2868 | This will read in debug info as necessary. */ | |
c906108c | 2869 | |
43f3e411 DE |
2870 | struct compunit_symtab * |
2871 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2872 | { |
43f3e411 | 2873 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2874 | CORE_ADDR distance = 0; |
77e371c0 | 2875 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2876 | |
2877 | /* If we know that this is not a text address, return failure. This is | |
2878 | necessary because we loop based on the block's high and low code | |
2879 | addresses, which do not include the data ranges, and because | |
2880 | we call find_pc_sect_psymtab which has a similar restriction based | |
2881 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 TT |
2882 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
2883 | if (msymbol.minsym | |
2884 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
2885 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
2886 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
2887 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
2888 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
8a48e967 | 2889 | return NULL; |
c906108c SS |
2890 | |
2891 | /* Search all symtabs for the one whose file contains our address, and which | |
2892 | is the smallest of all the ones containing the address. This is designed | |
2893 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2894 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2895 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2896 | ||
2897 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2898 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2899 | been read in already via the dependency mechanism. |
2900 | It might be swifter to create several symtabs with the same name | |
2901 | like xcoff does (I'm not sure). | |
2902 | ||
2903 | It also happens for objfiles that have their functions reordered. | |
2904 | For these, the symtab we are looking for is not necessarily read in. */ | |
2905 | ||
d8aeb77f TT |
2906 | for (objfile *obj_file : all_objfiles (current_program_space)) |
2907 | { | |
2908 | for (compunit_symtab *cust : objfile_compunits (obj_file)) | |
2909 | { | |
2910 | struct block *b; | |
2911 | const struct blockvector *bv; | |
43f3e411 | 2912 | |
d8aeb77f TT |
2913 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2914 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2915 | |
d8aeb77f TT |
2916 | if (BLOCK_START (b) <= pc |
2917 | && BLOCK_END (b) > pc | |
2918 | && (distance == 0 | |
2919 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2920 | { | |
2921 | /* For an objfile that has its functions reordered, | |
2922 | find_pc_psymtab will find the proper partial symbol table | |
2923 | and we simply return its corresponding symtab. */ | |
2924 | /* In order to better support objfiles that contain both | |
2925 | stabs and coff debugging info, we continue on if a psymtab | |
2926 | can't be found. */ | |
2927 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2928 | { | |
2929 | struct compunit_symtab *result; | |
2930 | ||
2931 | result | |
2932 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2933 | msymbol, | |
2934 | pc, | |
2935 | section, | |
2936 | 0); | |
2937 | if (result != NULL) | |
2938 | return result; | |
2939 | } | |
2940 | if (section != 0) | |
2941 | { | |
2942 | struct block_iterator iter; | |
2943 | struct symbol *sym = NULL; | |
c906108c | 2944 | |
d8aeb77f TT |
2945 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2946 | { | |
2947 | fixup_symbol_section (sym, obj_file); | |
2948 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2949 | sym), | |
2950 | section)) | |
2951 | break; | |
2952 | } | |
2953 | if (sym == NULL) | |
2954 | continue; /* No symbol in this symtab matches | |
2955 | section. */ | |
2956 | } | |
2957 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2958 | best_cust = cust; | |
2959 | } | |
2960 | } | |
2961 | } | |
c906108c | 2962 | |
43f3e411 DE |
2963 | if (best_cust != NULL) |
2964 | return best_cust; | |
c906108c | 2965 | |
072cabfe DE |
2966 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2967 | ||
aed57c53 TT |
2968 | for (objfile *objf : all_objfiles (current_program_space)) |
2969 | { | |
2970 | struct compunit_symtab *result; | |
2971 | ||
2972 | if (!objf->sf) | |
2973 | continue; | |
2974 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2975 | msymbol, | |
2976 | pc, section, | |
2977 | 1); | |
2978 | if (result != NULL) | |
2979 | return result; | |
2980 | } | |
ccefe4c4 TT |
2981 | |
2982 | return NULL; | |
c906108c SS |
2983 | } |
2984 | ||
43f3e411 DE |
2985 | /* Find the compunit symtab associated with PC. |
2986 | This will read in debug info as necessary. | |
2987 | Backward compatibility, no section. */ | |
c906108c | 2988 | |
43f3e411 DE |
2989 | struct compunit_symtab * |
2990 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2991 | { |
43f3e411 | 2992 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2993 | } |
71a3c369 TT |
2994 | |
2995 | /* See symtab.h. */ | |
2996 | ||
2997 | struct symbol * | |
2998 | find_symbol_at_address (CORE_ADDR address) | |
2999 | { | |
aed57c53 TT |
3000 | for (objfile *objfile : all_objfiles (current_program_space)) |
3001 | { | |
3002 | if (objfile->sf == NULL | |
3003 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
3004 | continue; | |
71a3c369 | 3005 | |
aed57c53 TT |
3006 | struct compunit_symtab *symtab |
3007 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
3008 | if (symtab != NULL) | |
3009 | { | |
3010 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 3011 | |
aed57c53 | 3012 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 3013 | { |
aed57c53 TT |
3014 | struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
3015 | struct block_iterator iter; | |
3016 | struct symbol *sym; | |
3017 | ||
3018 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3019 | { | |
3020 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3021 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3022 | return sym; | |
3023 | } | |
71a3c369 | 3024 | } |
aed57c53 TT |
3025 | } |
3026 | } | |
71a3c369 TT |
3027 | |
3028 | return NULL; | |
3029 | } | |
3030 | ||
c906108c | 3031 | \f |
c5aa993b | 3032 | |
7e73cedf | 3033 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3034 | Return a structure containing a symtab pointer, a line number, |
3035 | and a pc range for the entire source line. | |
3036 | The value's .pc field is NOT the specified pc. | |
3037 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3038 | use the line that ends there. Otherwise, in that case, the line | |
3039 | that begins there is used. */ | |
3040 | ||
3041 | /* The big complication here is that a line may start in one file, and end just | |
3042 | before the start of another file. This usually occurs when you #include | |
3043 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3044 | range, we must search all symtabs associated with this compilation unit, and | |
3045 | find the one whose first PC is closer than that of the next line in this | |
3046 | symtab. */ | |
3047 | ||
c906108c | 3048 | struct symtab_and_line |
714835d5 | 3049 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3050 | { |
43f3e411 | 3051 | struct compunit_symtab *cust; |
52f0bd74 AC |
3052 | struct linetable *l; |
3053 | int len; | |
52f0bd74 | 3054 | struct linetable_entry *item; |
346d1dfe | 3055 | const struct blockvector *bv; |
7cbd4a93 | 3056 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3057 | |
3058 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3059 | ||
3060 | struct linetable_entry *best = NULL; | |
3061 | CORE_ADDR best_end = 0; | |
3062 | struct symtab *best_symtab = 0; | |
3063 | ||
3064 | /* Store here the first line number | |
3065 | of a file which contains the line at the smallest pc after PC. | |
3066 | If we don't find a line whose range contains PC, | |
3067 | we will use a line one less than this, | |
3068 | with a range from the start of that file to the first line's pc. */ | |
3069 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3070 | |
3071 | /* Info on best line seen in this file. */ | |
3072 | ||
3073 | struct linetable_entry *prev; | |
3074 | ||
3075 | /* If this pc is not from the current frame, | |
3076 | it is the address of the end of a call instruction. | |
3077 | Quite likely that is the start of the following statement. | |
3078 | But what we want is the statement containing the instruction. | |
3079 | Fudge the pc to make sure we get that. */ | |
3080 | ||
b77b1eb7 JB |
3081 | /* It's tempting to assume that, if we can't find debugging info for |
3082 | any function enclosing PC, that we shouldn't search for line | |
3083 | number info, either. However, GAS can emit line number info for | |
3084 | assembly files --- very helpful when debugging hand-written | |
3085 | assembly code. In such a case, we'd have no debug info for the | |
3086 | function, but we would have line info. */ | |
648f4f79 | 3087 | |
c906108c SS |
3088 | if (notcurrent) |
3089 | pc -= 1; | |
3090 | ||
c5aa993b | 3091 | /* elz: added this because this function returned the wrong |
c906108c | 3092 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3093 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3094 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3095 | taken to be the one of the line before the pc. */ |
3096 | ||
c906108c | 3097 | /* RT: Further explanation: |
c5aa993b | 3098 | |
c906108c SS |
3099 | * We have stubs (trampolines) inserted between procedures. |
3100 | * | |
3101 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3102 | * exists in the main image. | |
3103 | * | |
3104 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3105 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3106 | * the others appear as text. E.g.: |
3107 | * | |
9af17804 | 3108 | * Minimal symbol table for main image |
c906108c SS |
3109 | * main: code for main (text symbol) |
3110 | * shr1: stub (trampoline symbol) | |
3111 | * foo: code for foo (text symbol) | |
3112 | * ... | |
3113 | * Minimal symbol table for "shr1" image: | |
3114 | * ... | |
3115 | * shr1: code for shr1 (text symbol) | |
3116 | * ... | |
3117 | * | |
3118 | * So the code below is trying to detect if we are in the stub | |
3119 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3120 | * and if found, do the symbolization from the real-code address | |
3121 | * rather than the stub address. | |
3122 | * | |
3123 | * Assumptions being made about the minimal symbol table: | |
3124 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3125 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3126 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3127 | * symbol (the "foo" text symbol for example) and will not |
3128 | * return the trampoline. | |
3129 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3130 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3131 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3132 | * check for the address being the same, to avoid an |
3133 | * infinite recursion. | |
3134 | */ | |
c5aa993b | 3135 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3136 | if (msymbol.minsym != NULL) |
3137 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3138 | { |
77e371c0 | 3139 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3140 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3141 | NULL); |
3142 | ||
3143 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3144 | /* I eliminated this warning since it is coming out |
3145 | * in the following situation: | |
3146 | * gdb shmain // test program with shared libraries | |
3147 | * (gdb) break shr1 // function in shared lib | |
3148 | * Warning: In stub for ... | |
9af17804 | 3149 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3150 | * so of course we can't find the real func/line info, |
3151 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3152 | * So I commented out the warning. RT */ |
3e43a32a | 3153 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3154 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3155 | ; | |
c5aa993b | 3156 | /* fall through */ |
77e371c0 TT |
3157 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3158 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3159 | /* Avoid infinite recursion */ |
c378eb4e | 3160 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3161 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3162 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3163 | ; | |
c5aa993b JM |
3164 | /* fall through */ |
3165 | else | |
77e371c0 | 3166 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3167 | } |
c906108c | 3168 | |
51abb421 PA |
3169 | symtab_and_line val; |
3170 | val.pspace = current_program_space; | |
c906108c | 3171 | |
43f3e411 DE |
3172 | cust = find_pc_sect_compunit_symtab (pc, section); |
3173 | if (cust == NULL) | |
c906108c | 3174 | { |
c378eb4e | 3175 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3176 | if (notcurrent) |
3177 | pc++; | |
3178 | val.pc = pc; | |
3179 | return val; | |
3180 | } | |
3181 | ||
43f3e411 | 3182 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3183 | |
3184 | /* Look at all the symtabs that share this blockvector. | |
3185 | They all have the same apriori range, that we found was right; | |
3186 | but they have different line tables. */ | |
3187 | ||
5accd1a0 | 3188 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3189 | { |
3190 | /* Find the best line in this symtab. */ | |
43f3e411 | 3191 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3192 | if (!l) |
c5aa993b | 3193 | continue; |
c906108c SS |
3194 | len = l->nitems; |
3195 | if (len <= 0) | |
3196 | { | |
3197 | /* I think len can be zero if the symtab lacks line numbers | |
3198 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3199 | I'm not sure which, and maybe it depends on the symbol | |
3200 | reader). */ | |
3201 | continue; | |
3202 | } | |
3203 | ||
3204 | prev = NULL; | |
c378eb4e | 3205 | item = l->item; /* Get first line info. */ |
c906108c SS |
3206 | |
3207 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3208 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3209 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3210 | alt = item; |
c906108c | 3211 | |
b926417a | 3212 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3213 | const struct linetable_entry & lhs)->bool |
3214 | { | |
b926417a | 3215 | return comp_pc < lhs.pc; |
7cbe16e9 | 3216 | }; |
c906108c | 3217 | |
7cbe16e9 SR |
3218 | struct linetable_entry *first = item; |
3219 | struct linetable_entry *last = item + len; | |
3220 | item = std::upper_bound (first, last, pc, pc_compare); | |
3221 | if (item != first) | |
3222 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3223 | |
3224 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3225 | item points at the next line. If we ran off the end of the linetable |
3226 | (pc >= start of the last line), then prev == item. If pc < start of | |
3227 | the first line, prev will not be set. */ | |
c906108c SS |
3228 | |
3229 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3230 | If so, record this file, and its best line, as best so far. Don't |
3231 | save prev if it represents the end of a function (i.e. line number | |
3232 | 0) instead of a real line. */ | |
c906108c | 3233 | |
083ae935 | 3234 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3235 | { |
3236 | best = prev; | |
43f3e411 | 3237 | best_symtab = iter_s; |
25d53da1 KB |
3238 | |
3239 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3240 | if (best_end <= best->pc) | |
3241 | best_end = 0; | |
c906108c | 3242 | } |
25d53da1 KB |
3243 | |
3244 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3245 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3246 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3247 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3248 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3249 | best_end = item->pc; |
c906108c SS |
3250 | } |
3251 | ||
3252 | if (!best_symtab) | |
3253 | { | |
e86e87f7 DJ |
3254 | /* If we didn't find any line number info, just return zeros. |
3255 | We used to return alt->line - 1 here, but that could be | |
3256 | anywhere; if we don't have line number info for this PC, | |
3257 | don't make some up. */ | |
3258 | val.pc = pc; | |
c906108c | 3259 | } |
e8717518 FF |
3260 | else if (best->line == 0) |
3261 | { | |
3262 | /* If our best fit is in a range of PC's for which no line | |
3263 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3264 | find any valid line information. */ |
e8717518 FF |
3265 | val.pc = pc; |
3266 | } | |
c906108c SS |
3267 | else |
3268 | { | |
3269 | val.symtab = best_symtab; | |
3270 | val.line = best->line; | |
3271 | val.pc = best->pc; | |
3272 | if (best_end && (!alt || best_end < alt->pc)) | |
3273 | val.end = best_end; | |
3274 | else if (alt) | |
3275 | val.end = alt->pc; | |
3276 | else | |
3277 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3278 | } | |
3279 | val.section = section; | |
3280 | return val; | |
3281 | } | |
3282 | ||
c378eb4e | 3283 | /* Backward compatibility (no section). */ |
c906108c SS |
3284 | |
3285 | struct symtab_and_line | |
fba45db2 | 3286 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3287 | { |
714835d5 | 3288 | struct obj_section *section; |
c906108c SS |
3289 | |
3290 | section = find_pc_overlay (pc); | |
3291 | if (pc_in_unmapped_range (pc, section)) | |
3292 | pc = overlay_mapped_address (pc, section); | |
3293 | return find_pc_sect_line (pc, section, notcurrent); | |
3294 | } | |
34248c3a DE |
3295 | |
3296 | /* See symtab.h. */ | |
3297 | ||
3298 | struct symtab * | |
3299 | find_pc_line_symtab (CORE_ADDR pc) | |
3300 | { | |
3301 | struct symtab_and_line sal; | |
3302 | ||
3303 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3304 | There are currently no callers that ever pass non-zero. */ | |
3305 | sal = find_pc_line (pc, 0); | |
3306 | return sal.symtab; | |
3307 | } | |
c906108c | 3308 | \f |
c906108c SS |
3309 | /* Find line number LINE in any symtab whose name is the same as |
3310 | SYMTAB. | |
3311 | ||
3312 | If found, return the symtab that contains the linetable in which it was | |
3313 | found, set *INDEX to the index in the linetable of the best entry | |
3314 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3315 | exact match. | |
3316 | ||
3317 | If not found, return NULL. */ | |
3318 | ||
50641945 | 3319 | struct symtab * |
5accd1a0 | 3320 | find_line_symtab (struct symtab *sym_tab, int line, |
433759f7 | 3321 | int *index, int *exact_match) |
c906108c | 3322 | { |
6f43c46f | 3323 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3324 | |
3325 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3326 | so far seen. */ | |
3327 | ||
3328 | int best_index; | |
3329 | struct linetable *best_linetable; | |
3330 | struct symtab *best_symtab; | |
3331 | ||
3332 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3333 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3334 | best_symtab = sym_tab; | |
f8eba3c6 | 3335 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3336 | if (best_index < 0 || !exact) |
3337 | { | |
3338 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3339 | another symtab with the same name. In the case of xcoff, |
3340 | multiple csects for one source file (produced by IBM's FORTRAN | |
3341 | compiler) produce multiple symtabs (this is unavoidable | |
3342 | assuming csects can be at arbitrary places in memory and that | |
3343 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3344 | |
3345 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3346 | or 0 if none has been seen so far. |
3347 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3348 | int best; |
3349 | ||
c906108c SS |
3350 | if (best_index >= 0) |
3351 | best = best_linetable->item[best_index].line; | |
3352 | else | |
3353 | best = 0; | |
3354 | ||
aed57c53 TT |
3355 | for (objfile *objfile : all_objfiles (current_program_space)) |
3356 | { | |
3357 | if (objfile->sf) | |
3358 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3359 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3360 | } |
51432cca | 3361 | |
aed57c53 | 3362 | struct objfile *objfile; |
43f3e411 | 3363 | ALL_FILETABS (objfile, cu, s) |
c5aa993b JM |
3364 | { |
3365 | struct linetable *l; | |
3366 | int ind; | |
c906108c | 3367 | |
5accd1a0 | 3368 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) |
c5aa993b | 3369 | continue; |
5accd1a0 | 3370 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), |
d180bcbd | 3371 | symtab_to_fullname (s)) != 0) |
3ffc00b8 | 3372 | continue; |
8435453b | 3373 | l = SYMTAB_LINETABLE (s); |
f8eba3c6 | 3374 | ind = find_line_common (l, line, &exact, 0); |
c5aa993b JM |
3375 | if (ind >= 0) |
3376 | { | |
3377 | if (exact) | |
3378 | { | |
3379 | best_index = ind; | |
3380 | best_linetable = l; | |
3381 | best_symtab = s; | |
3382 | goto done; | |
3383 | } | |
3384 | if (best == 0 || l->item[ind].line < best) | |
3385 | { | |
3386 | best = l->item[ind].line; | |
3387 | best_index = ind; | |
3388 | best_linetable = l; | |
3389 | best_symtab = s; | |
3390 | } | |
3391 | } | |
3392 | } | |
c906108c | 3393 | } |
c5aa993b | 3394 | done: |
c906108c SS |
3395 | if (best_index < 0) |
3396 | return NULL; | |
3397 | ||
3398 | if (index) | |
3399 | *index = best_index; | |
3400 | if (exact_match) | |
3401 | *exact_match = exact; | |
3402 | ||
3403 | return best_symtab; | |
3404 | } | |
f8eba3c6 TT |
3405 | |
3406 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3407 | exactly match LINE. Returns an empty vector if there are no exact |
3408 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3409 | |
67d89901 | 3410 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3411 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3412 | struct linetable_entry **best_item) | |
3413 | { | |
c656bca5 | 3414 | int start = 0; |
67d89901 | 3415 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3416 | |
3417 | /* First, collect all the PCs that are at this line. */ | |
3418 | while (1) | |
3419 | { | |
3420 | int was_exact; | |
3421 | int idx; | |
3422 | ||
8435453b DE |
3423 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3424 | start); | |
f8eba3c6 TT |
3425 | if (idx < 0) |
3426 | break; | |
3427 | ||
3428 | if (!was_exact) | |
3429 | { | |
8435453b | 3430 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3431 | |
3432 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3433 | *best_item = item; | |
3434 | ||
3435 | break; | |
3436 | } | |
3437 | ||
67d89901 | 3438 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3439 | start = idx + 1; |
3440 | } | |
3441 | ||
3442 | return result; | |
3443 | } | |
3444 | ||
c906108c SS |
3445 | \f |
3446 | /* Set the PC value for a given source file and line number and return true. | |
3447 | Returns zero for invalid line number (and sets the PC to 0). | |
3448 | The source file is specified with a struct symtab. */ | |
3449 | ||
3450 | int | |
fba45db2 | 3451 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3452 | { |
3453 | struct linetable *l; | |
3454 | int ind; | |
3455 | ||
3456 | *pc = 0; | |
3457 | if (symtab == 0) | |
3458 | return 0; | |
3459 | ||
3460 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3461 | if (symtab != NULL) | |
3462 | { | |
8435453b | 3463 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3464 | *pc = l->item[ind].pc; |
3465 | return 1; | |
3466 | } | |
3467 | else | |
3468 | return 0; | |
3469 | } | |
3470 | ||
3471 | /* Find the range of pc values in a line. | |
3472 | Store the starting pc of the line into *STARTPTR | |
3473 | and the ending pc (start of next line) into *ENDPTR. | |
3474 | Returns 1 to indicate success. | |
3475 | Returns 0 if could not find the specified line. */ | |
3476 | ||
3477 | int | |
fba45db2 KB |
3478 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3479 | CORE_ADDR *endptr) | |
c906108c SS |
3480 | { |
3481 | CORE_ADDR startaddr; | |
3482 | struct symtab_and_line found_sal; | |
3483 | ||
3484 | startaddr = sal.pc; | |
c5aa993b | 3485 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3486 | return 0; |
3487 | ||
3488 | /* This whole function is based on address. For example, if line 10 has | |
3489 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3490 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3491 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3492 | This also insures that we never give a range like "starts at 0x134 | |
3493 | and ends at 0x12c". */ | |
3494 | ||
3495 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3496 | if (found_sal.line != sal.line) | |
3497 | { | |
3498 | /* The specified line (sal) has zero bytes. */ | |
3499 | *startptr = found_sal.pc; | |
3500 | *endptr = found_sal.pc; | |
3501 | } | |
3502 | else | |
3503 | { | |
3504 | *startptr = found_sal.pc; | |
3505 | *endptr = found_sal.end; | |
3506 | } | |
3507 | return 1; | |
3508 | } | |
3509 | ||
3510 | /* Given a line table and a line number, return the index into the line | |
3511 | table for the pc of the nearest line whose number is >= the specified one. | |
3512 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3513 | START is the index at which to start searching the line table. |
c906108c SS |
3514 | |
3515 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3516 | ||
3517 | static int | |
aa1ee363 | 3518 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3519 | int *exact_match, int start) |
c906108c | 3520 | { |
52f0bd74 AC |
3521 | int i; |
3522 | int len; | |
c906108c SS |
3523 | |
3524 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3525 | or 0 if none has been seen so far. | |
3526 | BEST_INDEX identifies the item for it. */ | |
3527 | ||
3528 | int best_index = -1; | |
3529 | int best = 0; | |
3530 | ||
b7589f7d DJ |
3531 | *exact_match = 0; |
3532 | ||
c906108c SS |
3533 | if (lineno <= 0) |
3534 | return -1; | |
3535 | if (l == 0) | |
3536 | return -1; | |
3537 | ||
3538 | len = l->nitems; | |
f8eba3c6 | 3539 | for (i = start; i < len; i++) |
c906108c | 3540 | { |
aa1ee363 | 3541 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3542 | |
3543 | if (item->line == lineno) | |
3544 | { | |
3545 | /* Return the first (lowest address) entry which matches. */ | |
3546 | *exact_match = 1; | |
3547 | return i; | |
3548 | } | |
3549 | ||
3550 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3551 | { | |
3552 | best = item->line; | |
3553 | best_index = i; | |
3554 | } | |
3555 | } | |
3556 | ||
3557 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3558 | return best_index; |
3559 | } | |
3560 | ||
3561 | int | |
fba45db2 | 3562 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3563 | { |
3564 | struct symtab_and_line sal; | |
433759f7 | 3565 | |
c906108c SS |
3566 | sal = find_pc_line (pc, 0); |
3567 | *startptr = sal.pc; | |
3568 | *endptr = sal.end; | |
3569 | return sal.symtab != 0; | |
3570 | } | |
3571 | ||
cd2bb709 PA |
3572 | /* Helper for find_function_start_sal. Does most of the work, except |
3573 | setting the sal's symbol. */ | |
aab2f208 | 3574 | |
cd2bb709 PA |
3575 | static symtab_and_line |
3576 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3577 | bool funfirstline) | |
aab2f208 | 3578 | { |
42ddae10 | 3579 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3580 | |
6e22494e JK |
3581 | if (funfirstline && sal.symtab != NULL |
3582 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3583 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3584 | { | |
42ddae10 | 3585 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3586 | |
42ddae10 | 3587 | sal.pc = func_addr; |
141c5cc4 JK |
3588 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3589 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3590 | return sal; |
3591 | } | |
3592 | ||
aab2f208 | 3593 | /* We always should have a line for the function start address. |
42ddae10 | 3594 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3595 | just the PC and hope that skip_prologue_sal (if requested) |
3596 | can find a line number for after the prologue. */ | |
42ddae10 | 3597 | if (sal.pc < func_addr) |
aab2f208 | 3598 | { |
51abb421 | 3599 | sal = {}; |
aab2f208 | 3600 | sal.pspace = current_program_space; |
42ddae10 | 3601 | sal.pc = func_addr; |
08be3fe3 | 3602 | sal.section = section; |
aab2f208 DE |
3603 | } |
3604 | ||
3605 | if (funfirstline) | |
3606 | skip_prologue_sal (&sal); | |
3607 | ||
3608 | return sal; | |
3609 | } | |
3610 | ||
42ddae10 PA |
3611 | /* See symtab.h. */ |
3612 | ||
cd2bb709 PA |
3613 | symtab_and_line |
3614 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3615 | bool funfirstline) | |
3616 | { | |
3617 | symtab_and_line sal | |
3618 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3619 | ||
3620 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3621 | the symtab and linenumber, but not a symbol. Fill in the | |
3622 | function symbol too. */ | |
3623 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3624 | ||
3625 | return sal; | |
3626 | } | |
3627 | ||
3628 | /* See symtab.h. */ | |
3629 | ||
42ddae10 PA |
3630 | symtab_and_line |
3631 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3632 | { | |
3633 | fixup_symbol_section (sym, NULL); | |
3634 | symtab_and_line sal | |
2b1ffcfd | 3635 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3636 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3637 | funfirstline); | |
42ddae10 PA |
3638 | sal.symbol = sym; |
3639 | return sal; | |
3640 | } | |
3641 | ||
3642 | ||
8c7a1ee8 EZ |
3643 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3644 | address for that function that has an entry in SYMTAB's line info | |
3645 | table. If such an entry cannot be found, return FUNC_ADDR | |
3646 | unaltered. */ | |
eca864fe | 3647 | |
70221824 | 3648 | static CORE_ADDR |
8c7a1ee8 EZ |
3649 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3650 | { | |
3651 | CORE_ADDR func_start, func_end; | |
3652 | struct linetable *l; | |
952a6d41 | 3653 | int i; |
8c7a1ee8 EZ |
3654 | |
3655 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3656 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3657 | if (l == NULL) |
3658 | return func_addr; | |
3659 | ||
3660 | /* Get the range for the function's PC values, or give up if we | |
3661 | cannot, for some reason. */ | |
3662 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3663 | return func_addr; | |
3664 | ||
3665 | /* Linetable entries are ordered by PC values, see the commentary in | |
3666 | symtab.h where `struct linetable' is defined. Thus, the first | |
3667 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3668 | address we are looking for. */ | |
3669 | for (i = 0; i < l->nitems; i++) | |
3670 | { | |
3671 | struct linetable_entry *item = &(l->item[i]); | |
3672 | ||
3673 | /* Don't use line numbers of zero, they mark special entries in | |
3674 | the table. See the commentary on symtab.h before the | |
3675 | definition of struct linetable. */ | |
3676 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3677 | return item->pc; | |
3678 | } | |
3679 | ||
3680 | return func_addr; | |
3681 | } | |
3682 | ||
059acae7 UW |
3683 | /* Adjust SAL to the first instruction past the function prologue. |
3684 | If the PC was explicitly specified, the SAL is not changed. | |
3685 | If the line number was explicitly specified, at most the SAL's PC | |
3686 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3687 | |
059acae7 UW |
3688 | void |
3689 | skip_prologue_sal (struct symtab_and_line *sal) | |
3690 | { | |
3691 | struct symbol *sym; | |
3692 | struct symtab_and_line start_sal; | |
8be455d7 | 3693 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3694 | struct obj_section *section; |
3695 | const char *name; | |
3696 | struct objfile *objfile; | |
3697 | struct gdbarch *gdbarch; | |
3977b71f | 3698 | const struct block *b, *function_block; |
8be455d7 | 3699 | int force_skip, skip; |
c906108c | 3700 | |
a4b411d6 | 3701 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3702 | if (sal->explicit_pc) |
3703 | return; | |
6c95b8df | 3704 | |
5ed8105e PA |
3705 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3706 | ||
059acae7 | 3707 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3708 | |
059acae7 UW |
3709 | sym = find_pc_sect_function (sal->pc, sal->section); |
3710 | if (sym != NULL) | |
bccdca4a | 3711 | { |
059acae7 UW |
3712 | fixup_symbol_section (sym, NULL); |
3713 | ||
08be3fe3 | 3714 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3715 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3716 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3717 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3718 | } |
059acae7 UW |
3719 | else |
3720 | { | |
7c7b6655 TT |
3721 | struct bound_minimal_symbol msymbol |
3722 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3723 | |
7c7b6655 | 3724 | if (msymbol.minsym == NULL) |
5ed8105e | 3725 | return; |
059acae7 | 3726 | |
7c7b6655 | 3727 | objfile = msymbol.objfile; |
77e371c0 | 3728 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3729 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3730 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3731 | } |
3732 | ||
3733 | gdbarch = get_objfile_arch (objfile); | |
3734 | ||
8be455d7 JK |
3735 | /* Process the prologue in two passes. In the first pass try to skip the |
3736 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3737 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3738 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3739 | |
8be455d7 JK |
3740 | skip = 1; |
3741 | force_skip = 1; | |
059acae7 | 3742 | |
8be455d7 JK |
3743 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3744 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3745 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3746 | if (sym != NULL |
3747 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3748 | force_skip = 0; |
059acae7 | 3749 | |
8be455d7 JK |
3750 | saved_pc = pc; |
3751 | do | |
c906108c | 3752 | { |
8be455d7 | 3753 | pc = saved_pc; |
4309257c | 3754 | |
8be455d7 JK |
3755 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3756 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3757 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3758 | pc = overlay_unmapped_address (pc, section); | |
3759 | ||
3760 | /* Skip "first line" of function (which is actually its prologue). */ | |
3761 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3762 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3763 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3764 | if (skip) |
46a62268 | 3765 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3766 | |
3767 | /* For overlays, map pc back into its mapped VMA range. */ | |
3768 | pc = overlay_mapped_address (pc, section); | |
3769 | ||
3770 | /* Calculate line number. */ | |
059acae7 | 3771 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3772 | |
3773 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3774 | line is still part of the same function. */ | |
3775 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3776 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3777 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3778 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3779 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3780 | { |
3781 | /* First pc of next line */ | |
3782 | pc = start_sal.end; | |
3783 | /* Recalculate the line number (might not be N+1). */ | |
3784 | start_sal = find_pc_sect_line (pc, section, 0); | |
3785 | } | |
3786 | ||
3787 | /* On targets with executable formats that don't have a concept of | |
3788 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3789 | to `__main' in `main' between the prologue and before user | |
3790 | code. */ | |
3791 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3792 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3793 | { |
3794 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3795 | /* Recalculate the line number (might not be N+1). */ | |
3796 | start_sal = find_pc_sect_line (pc, section, 0); | |
3797 | force_skip = 1; | |
3798 | } | |
4309257c | 3799 | } |
8be455d7 | 3800 | while (!force_skip && skip--); |
4309257c | 3801 | |
8c7a1ee8 EZ |
3802 | /* If we still don't have a valid source line, try to find the first |
3803 | PC in the lineinfo table that belongs to the same function. This | |
3804 | happens with COFF debug info, which does not seem to have an | |
3805 | entry in lineinfo table for the code after the prologue which has | |
3806 | no direct relation to source. For example, this was found to be | |
3807 | the case with the DJGPP target using "gcc -gcoff" when the | |
3808 | compiler inserted code after the prologue to make sure the stack | |
3809 | is aligned. */ | |
8be455d7 | 3810 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3811 | { |
08be3fe3 | 3812 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3813 | /* Recalculate the line number. */ |
059acae7 | 3814 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3815 | } |
3816 | ||
059acae7 UW |
3817 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3818 | forward SAL to the end of the prologue. */ | |
3819 | if (sal->pc >= pc) | |
3820 | return; | |
3821 | ||
3822 | sal->pc = pc; | |
3823 | sal->section = section; | |
3824 | ||
3825 | /* Unless the explicit_line flag was set, update the SAL line | |
3826 | and symtab to correspond to the modified PC location. */ | |
3827 | if (sal->explicit_line) | |
3828 | return; | |
3829 | ||
3830 | sal->symtab = start_sal.symtab; | |
3831 | sal->line = start_sal.line; | |
3832 | sal->end = start_sal.end; | |
c906108c | 3833 | |
edb3359d DJ |
3834 | /* Check if we are now inside an inlined function. If we can, |
3835 | use the call site of the function instead. */ | |
059acae7 | 3836 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3837 | function_block = NULL; |
3838 | while (b != NULL) | |
3839 | { | |
3840 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3841 | function_block = b; | |
3842 | else if (BLOCK_FUNCTION (b) != NULL) | |
3843 | break; | |
3844 | b = BLOCK_SUPERBLOCK (b); | |
3845 | } | |
3846 | if (function_block != NULL | |
3847 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3848 | { | |
059acae7 | 3849 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3850 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3851 | } |
c906108c | 3852 | } |
50641945 | 3853 | |
f1f58506 DE |
3854 | /* Given PC at the function's start address, attempt to find the |
3855 | prologue end using SAL information. Return zero if the skip fails. | |
3856 | ||
3857 | A non-optimized prologue traditionally has one SAL for the function | |
3858 | and a second for the function body. A single line function has | |
3859 | them both pointing at the same line. | |
3860 | ||
3861 | An optimized prologue is similar but the prologue may contain | |
3862 | instructions (SALs) from the instruction body. Need to skip those | |
3863 | while not getting into the function body. | |
3864 | ||
3865 | The functions end point and an increasing SAL line are used as | |
3866 | indicators of the prologue's endpoint. | |
3867 | ||
3868 | This code is based on the function refine_prologue_limit | |
3869 | (found in ia64). */ | |
3870 | ||
3871 | CORE_ADDR | |
3872 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3873 | { | |
3874 | struct symtab_and_line prologue_sal; | |
3875 | CORE_ADDR start_pc; | |
3876 | CORE_ADDR end_pc; | |
3877 | const struct block *bl; | |
3878 | ||
3879 | /* Get an initial range for the function. */ | |
3880 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3881 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3882 | ||
3883 | prologue_sal = find_pc_line (start_pc, 0); | |
3884 | if (prologue_sal.line != 0) | |
3885 | { | |
3886 | /* For languages other than assembly, treat two consecutive line | |
3887 | entries at the same address as a zero-instruction prologue. | |
3888 | The GNU assembler emits separate line notes for each instruction | |
3889 | in a multi-instruction macro, but compilers generally will not | |
3890 | do this. */ | |
3891 | if (prologue_sal.symtab->language != language_asm) | |
3892 | { | |
8435453b | 3893 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3894 | int idx = 0; |
3895 | ||
3896 | /* Skip any earlier lines, and any end-of-sequence marker | |
3897 | from a previous function. */ | |
3898 | while (linetable->item[idx].pc != prologue_sal.pc | |
3899 | || linetable->item[idx].line == 0) | |
3900 | idx++; | |
3901 | ||
3902 | if (idx+1 < linetable->nitems | |
3903 | && linetable->item[idx+1].line != 0 | |
3904 | && linetable->item[idx+1].pc == start_pc) | |
3905 | return start_pc; | |
3906 | } | |
3907 | ||
3908 | /* If there is only one sal that covers the entire function, | |
3909 | then it is probably a single line function, like | |
3910 | "foo(){}". */ | |
3911 | if (prologue_sal.end >= end_pc) | |
3912 | return 0; | |
3913 | ||
3914 | while (prologue_sal.end < end_pc) | |
3915 | { | |
3916 | struct symtab_and_line sal; | |
3917 | ||
3918 | sal = find_pc_line (prologue_sal.end, 0); | |
3919 | if (sal.line == 0) | |
3920 | break; | |
3921 | /* Assume that a consecutive SAL for the same (or larger) | |
3922 | line mark the prologue -> body transition. */ | |
3923 | if (sal.line >= prologue_sal.line) | |
3924 | break; | |
3925 | /* Likewise if we are in a different symtab altogether | |
3926 | (e.g. within a file included via #include). */ | |
3927 | if (sal.symtab != prologue_sal.symtab) | |
3928 | break; | |
3929 | ||
3930 | /* The line number is smaller. Check that it's from the | |
3931 | same function, not something inlined. If it's inlined, | |
3932 | then there is no point comparing the line numbers. */ | |
3933 | bl = block_for_pc (prologue_sal.end); | |
3934 | while (bl) | |
3935 | { | |
3936 | if (block_inlined_p (bl)) | |
3937 | break; | |
3938 | if (BLOCK_FUNCTION (bl)) | |
3939 | { | |
3940 | bl = NULL; | |
3941 | break; | |
3942 | } | |
3943 | bl = BLOCK_SUPERBLOCK (bl); | |
3944 | } | |
3945 | if (bl != NULL) | |
3946 | break; | |
3947 | ||
3948 | /* The case in which compiler's optimizer/scheduler has | |
3949 | moved instructions into the prologue. We look ahead in | |
3950 | the function looking for address ranges whose | |
3951 | corresponding line number is less the first one that we | |
3952 | found for the function. This is more conservative then | |
3953 | refine_prologue_limit which scans a large number of SALs | |
3954 | looking for any in the prologue. */ | |
3955 | prologue_sal = sal; | |
3956 | } | |
3957 | } | |
3958 | ||
3959 | if (prologue_sal.end < end_pc) | |
3960 | /* Return the end of this line, or zero if we could not find a | |
3961 | line. */ | |
3962 | return prologue_sal.end; | |
3963 | else | |
3964 | /* Don't return END_PC, which is past the end of the function. */ | |
3965 | return prologue_sal.pc; | |
3966 | } | |
bf223d3e PA |
3967 | |
3968 | /* See symtab.h. */ | |
3969 | ||
3970 | symbol * | |
3971 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3972 | { | |
4024cf2b PA |
3973 | CORE_ADDR func_addr; |
3974 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3975 | return NULL; |
3976 | ||
4024cf2b | 3977 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3978 | if (sym != NULL |
3979 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3980 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3981 | return sym; |
3982 | ||
3983 | return NULL; | |
3984 | } | |
3985 | ||
f1f58506 | 3986 | \f |
c906108c SS |
3987 | /* If P is of the form "operator[ \t]+..." where `...' is |
3988 | some legitimate operator text, return a pointer to the | |
3989 | beginning of the substring of the operator text. | |
3990 | Otherwise, return "". */ | |
eca864fe | 3991 | |
96142726 TT |
3992 | static const char * |
3993 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3994 | { |
3995 | *end = ""; | |
8090b426 | 3996 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3997 | return *end; |
8090b426 | 3998 | p += CP_OPERATOR_LEN; |
c906108c SS |
3999 | |
4000 | /* Don't get faked out by `operator' being part of a longer | |
4001 | identifier. */ | |
c5aa993b | 4002 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4003 | return *end; |
4004 | ||
4005 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4006 | while (*p == ' ' || *p == '\t') | |
4007 | p++; | |
4008 | ||
c378eb4e | 4009 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4010 | |
c5aa993b | 4011 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4012 | { |
96142726 | 4013 | const char *q = p + 1; |
433759f7 | 4014 | |
c5aa993b | 4015 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4016 | q++; |
4017 | *end = q; | |
4018 | return p; | |
4019 | } | |
4020 | ||
53e8ad3d MS |
4021 | while (*p) |
4022 | switch (*p) | |
4023 | { | |
4024 | case '\\': /* regexp quoting */ | |
4025 | if (p[1] == '*') | |
4026 | { | |
3e43a32a | 4027 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4028 | *end = p + 3; |
4029 | else /* 'operator\*' */ | |
4030 | *end = p + 2; | |
4031 | return p; | |
4032 | } | |
4033 | else if (p[1] == '[') | |
4034 | { | |
4035 | if (p[2] == ']') | |
3e43a32a MS |
4036 | error (_("mismatched quoting on brackets, " |
4037 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4038 | else if (p[2] == '\\' && p[3] == ']') |
4039 | { | |
4040 | *end = p + 4; /* 'operator\[\]' */ | |
4041 | return p; | |
4042 | } | |
4043 | else | |
8a3fe4f8 | 4044 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4045 | } |
9af17804 | 4046 | else |
53e8ad3d | 4047 | { |
c378eb4e | 4048 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
4049 | p++; |
4050 | continue; | |
4051 | } | |
4052 | break; | |
4053 | case '!': | |
4054 | case '=': | |
4055 | case '*': | |
4056 | case '/': | |
4057 | case '%': | |
4058 | case '^': | |
4059 | if (p[1] == '=') | |
4060 | *end = p + 2; | |
4061 | else | |
4062 | *end = p + 1; | |
4063 | return p; | |
4064 | case '<': | |
4065 | case '>': | |
4066 | case '+': | |
4067 | case '-': | |
4068 | case '&': | |
4069 | case '|': | |
4070 | if (p[0] == '-' && p[1] == '>') | |
4071 | { | |
c378eb4e | 4072 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4073 | if (p[2] == '*') |
4074 | { | |
4075 | *end = p + 3; /* 'operator->*' */ | |
4076 | return p; | |
4077 | } | |
4078 | else if (p[2] == '\\') | |
4079 | { | |
4080 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4081 | return p; | |
4082 | } | |
4083 | else | |
4084 | { | |
4085 | *end = p + 2; /* 'operator->' */ | |
4086 | return p; | |
4087 | } | |
4088 | } | |
4089 | if (p[1] == '=' || p[1] == p[0]) | |
4090 | *end = p + 2; | |
4091 | else | |
4092 | *end = p + 1; | |
4093 | return p; | |
4094 | case '~': | |
4095 | case ',': | |
c5aa993b | 4096 | *end = p + 1; |
53e8ad3d MS |
4097 | return p; |
4098 | case '(': | |
4099 | if (p[1] != ')') | |
3e43a32a MS |
4100 | error (_("`operator ()' must be specified " |
4101 | "without whitespace in `()'")); | |
c5aa993b | 4102 | *end = p + 2; |
53e8ad3d MS |
4103 | return p; |
4104 | case '?': | |
4105 | if (p[1] != ':') | |
3e43a32a MS |
4106 | error (_("`operator ?:' must be specified " |
4107 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4108 | *end = p + 2; |
4109 | return p; | |
4110 | case '[': | |
4111 | if (p[1] != ']') | |
3e43a32a MS |
4112 | error (_("`operator []' must be specified " |
4113 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4114 | *end = p + 2; |
4115 | return p; | |
4116 | default: | |
8a3fe4f8 | 4117 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4118 | break; |
4119 | } | |
4120 | ||
c906108c SS |
4121 | *end = ""; |
4122 | return *end; | |
4123 | } | |
c906108c | 4124 | \f |
c5aa993b | 4125 | |
9fdc877b DE |
4126 | /* Data structure to maintain printing state for output_source_filename. */ |
4127 | ||
4128 | struct output_source_filename_data | |
4129 | { | |
4130 | /* Cache of what we've seen so far. */ | |
4131 | struct filename_seen_cache *filename_seen_cache; | |
4132 | ||
4133 | /* Flag of whether we're printing the first one. */ | |
4134 | int first; | |
4135 | }; | |
4136 | ||
c94fdfd0 | 4137 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4138 | NAME is the name to print. |
4139 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4140 | |
c94fdfd0 | 4141 | static void |
9fdc877b DE |
4142 | output_source_filename (const char *name, |
4143 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4144 | { |
4145 | /* Since a single source file can result in several partial symbol | |
4146 | tables, we need to avoid printing it more than once. Note: if | |
4147 | some of the psymtabs are read in and some are not, it gets | |
4148 | printed both under "Source files for which symbols have been | |
4149 | read" and "Source files for which symbols will be read in on | |
4150 | demand". I consider this a reasonable way to deal with the | |
4151 | situation. I'm not sure whether this can also happen for | |
4152 | symtabs; it doesn't hurt to check. */ | |
4153 | ||
4154 | /* Was NAME already seen? */ | |
bbf2f4df | 4155 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4156 | { |
4157 | /* Yes; don't print it again. */ | |
4158 | return; | |
4159 | } | |
9fdc877b | 4160 | |
c94fdfd0 | 4161 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
4162 | if (! data->first) |
4163 | printf_filtered (", "); | |
4164 | data->first = 0; | |
c906108c SS |
4165 | |
4166 | wrap_here (""); | |
4167 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 4168 | } |
c906108c | 4169 | |
ccefe4c4 | 4170 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4171 | |
ccefe4c4 | 4172 | static void |
533a737e | 4173 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4174 | void *data) |
4175 | { | |
19ba03f4 SM |
4176 | output_source_filename (fullname ? fullname : filename, |
4177 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4178 | } |
4179 | ||
c906108c | 4180 | static void |
1d12d88f | 4181 | info_sources_command (const char *ignore, int from_tty) |
c906108c | 4182 | { |
52f0bd74 | 4183 | struct objfile *objfile; |
9fdc877b | 4184 | struct output_source_filename_data data; |
c5aa993b | 4185 | |
c906108c SS |
4186 | if (!have_full_symbols () && !have_partial_symbols ()) |
4187 | { | |
8a3fe4f8 | 4188 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4189 | } |
c5aa993b | 4190 | |
bbf2f4df PA |
4191 | filename_seen_cache filenames_seen; |
4192 | ||
4193 | data.filename_seen_cache = &filenames_seen; | |
9fdc877b | 4194 | |
c906108c SS |
4195 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
4196 | ||
9fdc877b | 4197 | data.first = 1; |
43f3e411 | 4198 | ALL_FILETABS (objfile, cu, s) |
c5aa993b | 4199 | { |
d092d1a2 | 4200 | const char *fullname = symtab_to_fullname (s); |
433759f7 | 4201 | |
f35a17b5 | 4202 | output_source_filename (fullname, &data); |
c5aa993b | 4203 | } |
c906108c | 4204 | printf_filtered ("\n\n"); |
c5aa993b | 4205 | |
3e43a32a MS |
4206 | printf_filtered ("Source files for which symbols " |
4207 | "will be read in on demand:\n\n"); | |
c906108c | 4208 | |
bbf2f4df | 4209 | filenames_seen.clear (); |
9fdc877b | 4210 | data.first = 1; |
bb4142cf DE |
4211 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4212 | 1 /*need_fullname*/); | |
c906108c SS |
4213 | printf_filtered ("\n"); |
4214 | } | |
4215 | ||
fbd9ab74 JK |
4216 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4217 | non-zero compare only lbasename of FILES. */ | |
4218 | ||
c906108c | 4219 | static int |
96142726 | 4220 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4221 | { |
4222 | int i; | |
4223 | ||
4224 | if (file != NULL && nfiles != 0) | |
4225 | { | |
4226 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4227 | { |
fbd9ab74 JK |
4228 | if (compare_filenames_for_search (file, (basenames |
4229 | ? lbasename (files[i]) | |
4230 | : files[i]))) | |
c5aa993b JM |
4231 | return 1; |
4232 | } | |
c906108c SS |
4233 | } |
4234 | else if (nfiles == 0) | |
4235 | return 1; | |
4236 | return 0; | |
4237 | } | |
4238 | ||
b52109bc | 4239 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4240 | sort symbols, not minimal symbols. */ |
eca864fe | 4241 | |
b9c04fb2 TT |
4242 | int |
4243 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4244 | const symbol_search &sym_b) | |
434d2d4f | 4245 | { |
b52109bc DE |
4246 | int c; |
4247 | ||
b9c04fb2 TT |
4248 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4249 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4250 | if (c != 0) |
4251 | return c; | |
434d2d4f | 4252 | |
b9c04fb2 TT |
4253 | if (sym_a.block != sym_b.block) |
4254 | return sym_a.block - sym_b.block; | |
b52109bc | 4255 | |
b9c04fb2 TT |
4256 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4257 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4258 | } |
4259 | ||
12615cba PW |
4260 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4261 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4262 | ||
4263 | bool | |
4264 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4265 | const struct symbol *sym) | |
4266 | { | |
4267 | struct type *sym_type; | |
4268 | std::string printed_sym_type_name; | |
4269 | ||
4270 | if (symbol_lookup_debug > 1) | |
4271 | { | |
4272 | fprintf_unfiltered (gdb_stdlog, | |
4273 | "treg_matches_sym_type_name\n sym %s\n", | |
4274 | SYMBOL_NATURAL_NAME (sym)); | |
4275 | } | |
4276 | ||
4277 | sym_type = SYMBOL_TYPE (sym); | |
4278 | if (sym_type == NULL) | |
4279 | return false; | |
4280 | ||
43d397ca PW |
4281 | { |
4282 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4283 | |
12615cba | 4284 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4285 | } |
4286 | ||
12615cba PW |
4287 | |
4288 | if (symbol_lookup_debug > 1) | |
4289 | { | |
4290 | fprintf_unfiltered (gdb_stdlog, | |
4291 | " sym_type_name %s\n", | |
4292 | printed_sym_type_name.c_str ()); | |
4293 | } | |
4294 | ||
4295 | ||
4296 | if (printed_sym_type_name.empty ()) | |
4297 | return false; | |
4298 | ||
4299 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4300 | } | |
4301 | ||
4302 | ||
b9c04fb2 | 4303 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4304 | |
4305 | static void | |
b9c04fb2 | 4306 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4307 | { |
b9c04fb2 TT |
4308 | std::sort (result->begin (), result->end ()); |
4309 | result->erase (std::unique (result->begin (), result->end ()), | |
4310 | result->end ()); | |
434d2d4f | 4311 | } |
5bd98722 | 4312 | |
c906108c | 4313 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4314 | returning the results. |
c906108c SS |
4315 | |
4316 | Only symbols of KIND are searched: | |
e8930875 | 4317 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4318 | and constants (enums). |
4319 | if T_REGEXP is not NULL, only returns var that have | |
4320 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4321 | FUNCTIONS_DOMAIN - search all functions |
4322 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4323 | ALL_DOMAIN - an internal error for this function |
c906108c | 4324 | |
b52109bc DE |
4325 | Within each file the results are sorted locally; each symtab's global and |
4326 | static blocks are separately alphabetized. | |
4327 | Duplicate entries are removed. */ | |
c378eb4e | 4328 | |
b9c04fb2 | 4329 | std::vector<symbol_search> |
96142726 | 4330 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4331 | const char *t_regexp, |
b9c04fb2 | 4332 | int nfiles, const char *files[]) |
c906108c | 4333 | { |
346d1dfe | 4334 | const struct blockvector *bv; |
52f0bd74 AC |
4335 | struct block *b; |
4336 | int i = 0; | |
8157b174 | 4337 | struct block_iterator iter; |
52f0bd74 | 4338 | struct symbol *sym; |
c906108c | 4339 | int found_misc = 0; |
bc043ef3 | 4340 | static const enum minimal_symbol_type types[] |
e8930875 | 4341 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 4342 | static const enum minimal_symbol_type types2[] |
e8930875 | 4343 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 4344 | static const enum minimal_symbol_type types3[] |
e8930875 | 4345 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 4346 | static const enum minimal_symbol_type types4[] |
e8930875 | 4347 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
4348 | enum minimal_symbol_type ourtype; |
4349 | enum minimal_symbol_type ourtype2; | |
4350 | enum minimal_symbol_type ourtype3; | |
4351 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4352 | std::vector<symbol_search> result; |
2d7cc5c7 | 4353 | gdb::optional<compiled_regex> preg; |
12615cba | 4354 | gdb::optional<compiled_regex> treg; |
c906108c | 4355 | |
e8930875 JK |
4356 | gdb_assert (kind <= TYPES_DOMAIN); |
4357 | ||
8903c50d TT |
4358 | ourtype = types[kind]; |
4359 | ourtype2 = types2[kind]; | |
4360 | ourtype3 = types3[kind]; | |
4361 | ourtype4 = types4[kind]; | |
c906108c | 4362 | |
c906108c SS |
4363 | if (regexp != NULL) |
4364 | { | |
4365 | /* Make sure spacing is right for C++ operators. | |
4366 | This is just a courtesy to make the matching less sensitive | |
4367 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4368 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4369 | const char *opend; |
4370 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4371 | |
c906108c | 4372 | if (*opname) |
c5aa993b | 4373 | { |
3e43a32a MS |
4374 | int fix = -1; /* -1 means ok; otherwise number of |
4375 | spaces needed. */ | |
433759f7 | 4376 | |
c5aa993b JM |
4377 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4378 | { | |
c378eb4e | 4379 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4380 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4381 | fix = 1; | |
4382 | } | |
4383 | else | |
4384 | { | |
c378eb4e | 4385 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4386 | if (opname[-1] == ' ') |
4387 | fix = 0; | |
4388 | } | |
c378eb4e | 4389 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4390 | if (fix >= 0) |
4391 | { | |
045f55a6 | 4392 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4393 | |
c5aa993b JM |
4394 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4395 | regexp = tmp; | |
4396 | } | |
4397 | } | |
4398 | ||
2d7cc5c7 PA |
4399 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4400 | ? REG_ICASE : 0); | |
4401 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4402 | } |
4403 | ||
12615cba PW |
4404 | if (t_regexp != NULL) |
4405 | { | |
4406 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4407 | ? REG_ICASE : 0); | |
4408 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4409 | } | |
4410 | ||
c906108c SS |
4411 | /* Search through the partial symtabs *first* for all symbols |
4412 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4413 | the machinery below. */ |
14bc53a8 PA |
4414 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4415 | { | |
4416 | return file_matches (filename, files, nfiles, | |
4417 | basenames); | |
4418 | }, | |
b5ec771e | 4419 | lookup_name_info::match_any (), |
14bc53a8 PA |
4420 | [&] (const char *symname) |
4421 | { | |
12615cba PW |
4422 | return (!preg.has_value () |
4423 | || preg->exec (symname, | |
4424 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4425 | }, |
4426 | NULL, | |
4427 | kind); | |
c906108c SS |
4428 | |
4429 | /* Here, we search through the minimal symbol tables for functions | |
4430 | and variables that match, and force their symbols to be read. | |
4431 | This is in particular necessary for demangled variable names, | |
4432 | which are no longer put into the partial symbol tables. | |
4433 | The symbol will then be found during the scan of symtabs below. | |
4434 | ||
4435 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4436 | for the function, for variables we have to call |
4437 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4438 | has debug info. | |
c906108c | 4439 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4440 | any matching symbols without debug info. |
4441 | We only search the objfile the msymbol came from, we no longer search | |
4442 | all objfiles. In large programs (1000s of shared libs) searching all | |
4443 | objfiles is not worth the pain. */ | |
c906108c | 4444 | |
176620f1 | 4445 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4446 | { |
5325b9bf TT |
4447 | for (objfile *objfile : all_objfiles (current_program_space)) |
4448 | { | |
4449 | for (minimal_symbol *msymbol : objfile_msymbols (objfile)) | |
4450 | { | |
4451 | QUIT; | |
89295b4d | 4452 | |
5325b9bf TT |
4453 | if (msymbol->created_by_gdb) |
4454 | continue; | |
422d65e7 | 4455 | |
5325b9bf TT |
4456 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4457 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4458 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4459 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4460 | { | |
4461 | if (!preg.has_value () | |
4462 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4463 | NULL, 0) == 0) | |
4464 | { | |
4465 | /* Note: An important side-effect of these | |
4466 | lookup functions is to expand the symbol | |
4467 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4468 | the next loop on compunits. */ |
5325b9bf TT |
4469 | if (kind == FUNCTIONS_DOMAIN |
4470 | ? (find_pc_compunit_symtab | |
4471 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4472 | == NULL) | |
4473 | : (lookup_symbol_in_objfile_from_linkage_name | |
4474 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4475 | VAR_DOMAIN) | |
4476 | .symbol == NULL)) | |
4477 | found_misc = 1; | |
4478 | } | |
4479 | } | |
4480 | } | |
4481 | } | |
c906108c SS |
4482 | } |
4483 | ||
d8aeb77f TT |
4484 | for (objfile *objfile : all_objfiles (current_program_space)) |
4485 | { | |
4486 | for (compunit_symtab *cust : objfile_compunits (objfile)) | |
4487 | { | |
4488 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4489 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4490 | { | |
4491 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4492 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4493 | { | |
4494 | struct symtab *real_symtab = symbol_symtab (sym); | |
4495 | ||
4496 | QUIT; | |
4497 | ||
4498 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4499 | not need to be a substring of symtab_to_fullname as | |
4500 | it may contain "./" etc. */ | |
4501 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4502 | || ((basenames_may_differ | |
4503 | || file_matches (lbasename (real_symtab->filename), | |
4504 | files, nfiles, 1)) | |
4505 | && file_matches (symtab_to_fullname (real_symtab), | |
4506 | files, nfiles, 0))) | |
4507 | && ((!preg.has_value () | |
4508 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4509 | NULL, 0) == 0) | |
4510 | && ((kind == VARIABLES_DOMAIN | |
4511 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4512 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4513 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4514 | /* LOC_CONST can be used for more than | |
4515 | just enums, e.g., c++ static const | |
4516 | members. We only want to skip enums | |
4517 | here. */ | |
4518 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4519 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4520 | == TYPE_CODE_ENUM)) | |
4521 | && (!treg.has_value () | |
4522 | || treg_matches_sym_type_name (*treg, sym))) | |
4523 | || (kind == FUNCTIONS_DOMAIN | |
4524 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4525 | && (!treg.has_value () | |
4526 | || treg_matches_sym_type_name (*treg, | |
4527 | sym))) | |
4528 | || (kind == TYPES_DOMAIN | |
4529 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4530 | { | |
4531 | /* match */ | |
4532 | result.emplace_back (i, sym); | |
4533 | } | |
4534 | } | |
4535 | } | |
4536 | } | |
4537 | } | |
c906108c | 4538 | |
b9c04fb2 TT |
4539 | if (!result.empty ()) |
4540 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4541 | |
c906108c | 4542 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4543 | no debug symbols, then add matching minsyms. But if the user wants |
4544 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4545 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4546 | |
a8462bbf PW |
4547 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4548 | && !treg.has_value ()) | |
c906108c | 4549 | { |
5325b9bf TT |
4550 | for (objfile *objfile : all_objfiles (current_program_space)) |
4551 | { | |
4552 | for (minimal_symbol *msymbol : objfile_msymbols (objfile)) | |
4553 | { | |
4554 | QUIT; | |
89295b4d | 4555 | |
5325b9bf TT |
4556 | if (msymbol->created_by_gdb) |
4557 | continue; | |
422d65e7 | 4558 | |
5325b9bf TT |
4559 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4560 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4561 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4562 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4563 | { | |
4564 | if (!preg.has_value () | |
4565 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4566 | NULL, 0) == 0) | |
4567 | { | |
4568 | /* For functions we can do a quick check of whether the | |
4569 | symbol might be found via find_pc_symtab. */ | |
4570 | if (kind != FUNCTIONS_DOMAIN | |
4571 | || (find_pc_compunit_symtab | |
4572 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4573 | == NULL)) | |
4574 | { | |
4575 | if (lookup_symbol_in_objfile_from_linkage_name | |
4576 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4577 | VAR_DOMAIN) | |
4578 | .symbol == NULL) | |
4579 | { | |
4580 | /* match */ | |
4581 | result.emplace_back (i, msymbol, objfile); | |
4582 | } | |
4583 | } | |
4584 | } | |
4585 | } | |
4586 | } | |
4587 | } | |
c906108c SS |
4588 | } |
4589 | ||
b9c04fb2 | 4590 | return result; |
c906108c SS |
4591 | } |
4592 | ||
4593 | /* Helper function for symtab_symbol_info, this function uses | |
4594 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4595 | regarding the match to gdb_stdout. If LAST is not NULL, |
4596 | print file and line number information for the symbol as | |
4597 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4598 | |
c906108c | 4599 | static void |
8903c50d | 4600 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4601 | struct symbol *sym, |
05cba821 | 4602 | int block, const char *last) |
c906108c | 4603 | { |
43d397ca | 4604 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4605 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4606 | |
c7dcbf88 | 4607 | if (last != NULL) |
c906108c | 4608 | { |
c7dcbf88 | 4609 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4610 | |
c7dcbf88 AA |
4611 | if (filename_cmp (last, s_filename) != 0) |
4612 | { | |
4613 | fputs_filtered ("\nFile ", gdb_stdout); | |
4614 | fputs_filtered (s_filename, gdb_stdout); | |
4615 | fputs_filtered (":\n", gdb_stdout); | |
4616 | } | |
4617 | ||
4618 | if (SYMBOL_LINE (sym) != 0) | |
4619 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4620 | else | |
4621 | puts_filtered ("\t"); | |
4622 | } | |
b744723f | 4623 | |
176620f1 | 4624 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4625 | printf_filtered ("static "); |
c5aa993b | 4626 | |
c378eb4e | 4627 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4628 | if (kind == TYPES_DOMAIN |
4629 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 4630 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4631 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4632 | else if (kind < TYPES_DOMAIN |
4633 | || (kind == TYPES_DOMAIN | |
4634 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4635 | { |
4636 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4637 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4638 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4639 | gdb_stdout, 0); |
c906108c SS |
4640 | |
4641 | printf_filtered (";\n"); | |
4642 | } | |
c906108c SS |
4643 | } |
4644 | ||
4645 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4646 | for non-debugging symbols to gdb_stdout. */ |
4647 | ||
c906108c | 4648 | static void |
7c7b6655 | 4649 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4650 | { |
7c7b6655 | 4651 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4652 | char *tmp; |
4653 | ||
d80b854b | 4654 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4655 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4656 | & (CORE_ADDR) 0xffffffff, |
4657 | 8); | |
3ac4495a | 4658 | else |
77e371c0 | 4659 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4660 | 16); |
3ac4495a | 4661 | printf_filtered ("%s %s\n", |
efd66ac6 | 4662 | tmp, MSYMBOL_PRINT_NAME (msymbol.minsym)); |
c906108c SS |
4663 | } |
4664 | ||
4665 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4666 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4667 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4668 | matches. */ |
4669 | ||
c906108c | 4670 | static void |
12615cba PW |
4671 | symtab_symbol_info (bool quiet, |
4672 | const char *regexp, enum search_domain kind, | |
4673 | const char *t_regexp, int from_tty) | |
c906108c | 4674 | { |
bc043ef3 | 4675 | static const char * const classnames[] = |
e8930875 | 4676 | {"variable", "function", "type"}; |
c7dcbf88 | 4677 | const char *last_filename = ""; |
c906108c SS |
4678 | int first = 1; |
4679 | ||
e8930875 JK |
4680 | gdb_assert (kind <= TYPES_DOMAIN); |
4681 | ||
c378eb4e | 4682 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba PW |
4683 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4684 | t_regexp, 0, NULL); | |
c906108c | 4685 | |
12615cba PW |
4686 | if (!quiet) |
4687 | { | |
4688 | if (regexp != NULL) | |
4689 | { | |
4690 | if (t_regexp != NULL) | |
4691 | printf_filtered | |
4692 | (_("All %ss matching regular expression \"%s\"" | |
4693 | " with type matching regulation expression \"%s\":\n"), | |
4694 | classnames[kind], regexp, t_regexp); | |
4695 | else | |
4696 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4697 | classnames[kind], regexp); | |
4698 | } | |
4699 | else | |
4700 | { | |
4701 | if (t_regexp != NULL) | |
4702 | printf_filtered | |
4703 | (_("All defined %ss" | |
4704 | " with type matching regulation expression \"%s\" :\n"), | |
4705 | classnames[kind], t_regexp); | |
4706 | else | |
4707 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4708 | } | |
4709 | } | |
c906108c | 4710 | |
b9c04fb2 | 4711 | for (const symbol_search &p : symbols) |
c906108c SS |
4712 | { |
4713 | QUIT; | |
4714 | ||
b9c04fb2 | 4715 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4716 | { |
4717 | if (first) | |
4718 | { | |
12615cba PW |
4719 | if (!quiet) |
4720 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4721 | first = 0; |
4722 | } | |
b9c04fb2 | 4723 | print_msymbol_info (p.msymbol); |
c5aa993b | 4724 | } |
c906108c | 4725 | else |
c5aa993b JM |
4726 | { |
4727 | print_symbol_info (kind, | |
b9c04fb2 TT |
4728 | p.symbol, |
4729 | p.block, | |
c5aa993b | 4730 | last_filename); |
d01060f0 | 4731 | last_filename |
b9c04fb2 | 4732 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4733 | } |
c906108c | 4734 | } |
c906108c SS |
4735 | } |
4736 | ||
0b39b52e | 4737 | static void |
12615cba | 4738 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4739 | { |
12615cba PW |
4740 | std::string regexp; |
4741 | std::string t_regexp; | |
4742 | bool quiet = false; | |
4743 | ||
4744 | while (args != NULL | |
4745 | && extract_info_print_args (&args, &quiet, ®exp, &t_regexp)) | |
4746 | ; | |
4747 | ||
4748 | if (args != NULL) | |
4749 | report_unrecognized_option_error ("info variables", args); | |
4750 | ||
4751 | symtab_symbol_info (quiet, | |
4752 | regexp.empty () ? NULL : regexp.c_str (), | |
4753 | VARIABLES_DOMAIN, | |
4754 | t_regexp.empty () ? NULL : t_regexp.c_str (), | |
4755 | from_tty); | |
0b39b52e TT |
4756 | } |
4757 | ||
12615cba | 4758 | |
c906108c | 4759 | static void |
12615cba | 4760 | info_functions_command (const char *args, int from_tty) |
c906108c | 4761 | { |
12615cba PW |
4762 | std::string regexp; |
4763 | std::string t_regexp; | |
d54cfd76 | 4764 | bool quiet = false; |
12615cba PW |
4765 | |
4766 | while (args != NULL | |
4767 | && extract_info_print_args (&args, &quiet, ®exp, &t_regexp)) | |
4768 | ; | |
4769 | ||
4770 | if (args != NULL) | |
4771 | report_unrecognized_option_error ("info functions", args); | |
4772 | ||
4773 | symtab_symbol_info (quiet, | |
4774 | regexp.empty () ? NULL : regexp.c_str (), | |
4775 | FUNCTIONS_DOMAIN, | |
4776 | t_regexp.empty () ? NULL : t_regexp.c_str (), | |
4777 | from_tty); | |
c906108c SS |
4778 | } |
4779 | ||
357e46e7 | 4780 | |
c906108c | 4781 | static void |
1d12d88f | 4782 | info_types_command (const char *regexp, int from_tty) |
c906108c | 4783 | { |
12615cba | 4784 | symtab_symbol_info (false, regexp, TYPES_DOMAIN, NULL, from_tty); |
c906108c SS |
4785 | } |
4786 | ||
c378eb4e | 4787 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4788 | |
8b93c638 | 4789 | void |
fba45db2 | 4790 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4791 | { |
4792 | rbreak_command (regexp, from_tty); | |
4793 | } | |
8926118c | 4794 | |
c906108c | 4795 | static void |
0b39b52e | 4796 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 4797 | { |
c80049d3 | 4798 | std::string string; |
96142726 TT |
4799 | const char **files = NULL; |
4800 | const char *file_name; | |
8bd10a10 | 4801 | int nfiles = 0; |
c906108c | 4802 | |
8bd10a10 CM |
4803 | if (regexp) |
4804 | { | |
0b39b52e | 4805 | const char *colon = strchr (regexp, ':'); |
433759f7 | 4806 | |
8bd10a10 CM |
4807 | if (colon && *(colon + 1) != ':') |
4808 | { | |
4809 | int colon_index; | |
96142726 | 4810 | char *local_name; |
8bd10a10 CM |
4811 | |
4812 | colon_index = colon - regexp; | |
224c3ddb | 4813 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
4814 | memcpy (local_name, regexp, colon_index); |
4815 | local_name[colon_index--] = 0; | |
4816 | while (isspace (local_name[colon_index])) | |
4817 | local_name[colon_index--] = 0; | |
4818 | file_name = local_name; | |
8bd10a10 CM |
4819 | files = &file_name; |
4820 | nfiles = 1; | |
529480d0 | 4821 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4822 | } |
4823 | } | |
4824 | ||
b9c04fb2 TT |
4825 | std::vector<symbol_search> symbols = search_symbols (regexp, |
4826 | FUNCTIONS_DOMAIN, | |
12615cba | 4827 | NULL, |
b9c04fb2 | 4828 | nfiles, files); |
c906108c | 4829 | |
c80049d3 | 4830 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 4831 | for (const symbol_search &p : symbols) |
c906108c | 4832 | { |
b9c04fb2 | 4833 | if (p.msymbol.minsym == NULL) |
c5aa993b | 4834 | { |
b9c04fb2 | 4835 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 4836 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 4837 | |
c80049d3 TT |
4838 | string = string_printf ("%s:'%s'", fullname, |
4839 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
4840 | break_command (&string[0], from_tty); | |
c7dcbf88 | 4841 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 4842 | } |
c906108c | 4843 | else |
c5aa993b | 4844 | { |
c80049d3 TT |
4845 | string = string_printf ("'%s'", |
4846 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 4847 | |
c80049d3 | 4848 | break_command (&string[0], from_tty); |
c5aa993b | 4849 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 4850 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 4851 | } |
c906108c | 4852 | } |
c906108c | 4853 | } |
c906108c | 4854 | \f |
c5aa993b | 4855 | |
c62446b1 | 4856 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
4857 | |
4858 | static int | |
c62446b1 | 4859 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 4860 | const lookup_name_info &lookup_name, |
b5ec771e PA |
4861 | completion_match_result &match_res) |
4862 | { | |
d4c2a405 | 4863 | const language_defn *lang = language_def (symbol_language); |
1976171a | 4864 | |
b5ec771e | 4865 | symbol_name_matcher_ftype *name_match |
618daa93 | 4866 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 4867 | |
a207cff2 | 4868 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
4869 | } |
4870 | ||
b5ec771e | 4871 | /* See symtab.h. */ |
c906108c | 4872 | |
b5ec771e | 4873 | void |
eb3ff9a5 | 4874 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 4875 | language symbol_language, |
eb3ff9a5 | 4876 | const char *symname, |
b5ec771e | 4877 | const lookup_name_info &lookup_name, |
0d5cff50 | 4878 | const char *text, const char *word) |
c906108c | 4879 | { |
b5ec771e PA |
4880 | completion_match_result &match_res |
4881 | = tracker.reset_completion_match_result (); | |
4882 | ||
c378eb4e | 4883 | /* Clip symbols that cannot match. */ |
c62446b1 | 4884 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 4885 | return; |
c906108c | 4886 | |
b5ec771e PA |
4887 | /* Refresh SYMNAME from the match string. It's potentially |
4888 | different depending on language. (E.g., on Ada, the match may be | |
4889 | the encoded symbol name wrapped in "<>"). */ | |
4890 | symname = match_res.match.match (); | |
4891 | gdb_assert (symname != NULL); | |
4892 | ||
c906108c | 4893 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4894 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4895 | |
4896 | { | |
60a20c19 PA |
4897 | gdb::unique_xmalloc_ptr<char> completion |
4898 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 4899 | |
a207cff2 PA |
4900 | /* Here we pass the match-for-lcd object to add_completion. Some |
4901 | languages match the user text against substrings of symbol | |
4902 | names in some cases. E.g., in C++, "b push_ba" completes to | |
4903 | "std::vector::push_back", "std::string::push_back", etc., and | |
4904 | in this case we want the completion lowest common denominator | |
4905 | to be "push_back" instead of "std::". */ | |
4906 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 4907 | &match_res.match_for_lcd, text, word); |
c906108c SS |
4908 | } |
4909 | } | |
4910 | ||
6da67eb1 PA |
4911 | /* completion_list_add_name wrapper for struct symbol. */ |
4912 | ||
4913 | static void | |
eb3ff9a5 PA |
4914 | completion_list_add_symbol (completion_tracker &tracker, |
4915 | symbol *sym, | |
b5ec771e | 4916 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4917 | const char *text, const char *word) |
4918 | { | |
b5ec771e PA |
4919 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
4920 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4921 | lookup_name, text, word); |
6da67eb1 PA |
4922 | } |
4923 | ||
4924 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
4925 | ||
4926 | static void | |
eb3ff9a5 PA |
4927 | completion_list_add_msymbol (completion_tracker &tracker, |
4928 | minimal_symbol *sym, | |
b5ec771e | 4929 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4930 | const char *text, const char *word) |
4931 | { | |
b5ec771e PA |
4932 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
4933 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4934 | lookup_name, text, word); |
6da67eb1 PA |
4935 | } |
4936 | ||
b5ec771e | 4937 | |
69636828 AF |
4938 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4939 | again and feed all the selectors into the mill. */ | |
4940 | ||
4941 | static void | |
eb3ff9a5 PA |
4942 | completion_list_objc_symbol (completion_tracker &tracker, |
4943 | struct minimal_symbol *msymbol, | |
b5ec771e | 4944 | const lookup_name_info &lookup_name, |
0d5cff50 | 4945 | const char *text, const char *word) |
69636828 AF |
4946 | { |
4947 | static char *tmp = NULL; | |
4948 | static unsigned int tmplen = 0; | |
9af17804 | 4949 | |
0d5cff50 | 4950 | const char *method, *category, *selector; |
69636828 | 4951 | char *tmp2 = NULL; |
9af17804 | 4952 | |
efd66ac6 | 4953 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
4954 | |
4955 | /* Is it a method? */ | |
4956 | if ((method[0] != '-') && (method[0] != '+')) | |
4957 | return; | |
4958 | ||
1b026119 | 4959 | if (text[0] == '[') |
69636828 | 4960 | /* Complete on shortened method method. */ |
b5ec771e PA |
4961 | completion_list_add_name (tracker, language_objc, |
4962 | method + 1, | |
4963 | lookup_name, | |
1b026119 | 4964 | text, word); |
9af17804 | 4965 | |
69636828 AF |
4966 | while ((strlen (method) + 1) >= tmplen) |
4967 | { | |
4968 | if (tmplen == 0) | |
4969 | tmplen = 1024; | |
4970 | else | |
4971 | tmplen *= 2; | |
224c3ddb | 4972 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
4973 | } |
4974 | selector = strchr (method, ' '); | |
4975 | if (selector != NULL) | |
4976 | selector++; | |
9af17804 | 4977 | |
69636828 | 4978 | category = strchr (method, '('); |
9af17804 | 4979 | |
69636828 AF |
4980 | if ((category != NULL) && (selector != NULL)) |
4981 | { | |
4982 | memcpy (tmp, method, (category - method)); | |
4983 | tmp[category - method] = ' '; | |
4984 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 4985 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
4986 | lookup_name, text, word); |
4987 | if (text[0] == '[') | |
b5ec771e | 4988 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 4989 | lookup_name, text, word); |
69636828 | 4990 | } |
9af17804 | 4991 | |
69636828 AF |
4992 | if (selector != NULL) |
4993 | { | |
4994 | /* Complete on selector only. */ | |
4995 | strcpy (tmp, selector); | |
4996 | tmp2 = strchr (tmp, ']'); | |
4997 | if (tmp2 != NULL) | |
4998 | *tmp2 = '\0'; | |
9af17804 | 4999 | |
b5ec771e | 5000 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5001 | lookup_name, text, word); |
69636828 AF |
5002 | } |
5003 | } | |
5004 | ||
5005 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5006 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5007 | |
6f937416 PA |
5008 | static const char * |
5009 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5010 | { |
5011 | for (; p > text; --p) | |
5012 | { | |
5013 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5014 | continue; | |
5015 | else | |
5016 | { | |
5017 | if ((current_language->la_language == language_objc)) | |
5018 | { | |
c378eb4e | 5019 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5020 | continue; |
5021 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5022 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5023 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5024 | { /* Might be part of a method name. */ |
6f937416 | 5025 | const char *t = p; |
69636828 AF |
5026 | |
5027 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5028 | that we are in the middle of a method name. However, | |
5029 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5030 | Unfortunately we have to find it now to decide. */ | |
5031 | ||
5032 | while (t > text) | |
5033 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5034 | t[-1] == ' ' || t[-1] == ':' || | |
5035 | t[-1] == '(' || t[-1] == ')') | |
5036 | --t; | |
5037 | else | |
5038 | break; | |
5039 | ||
5040 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5041 | p = t - 2; /* Method name detected. */ |
5042 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5043 | } |
5044 | } | |
5045 | break; | |
5046 | } | |
5047 | } | |
5048 | return p; | |
5049 | } | |
5050 | ||
edb3359d | 5051 | static void |
eb3ff9a5 PA |
5052 | completion_list_add_fields (completion_tracker &tracker, |
5053 | struct symbol *sym, | |
b5ec771e | 5054 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5055 | const char *text, const char *word) |
edb3359d DJ |
5056 | { |
5057 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5058 | { | |
5059 | struct type *t = SYMBOL_TYPE (sym); | |
5060 | enum type_code c = TYPE_CODE (t); | |
5061 | int j; | |
5062 | ||
5063 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5064 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5065 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5066 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5067 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5068 | lookup_name, text, word); |
edb3359d DJ |
5069 | } |
5070 | } | |
5071 | ||
f9d67a22 PA |
5072 | /* See symtab.h. */ |
5073 | ||
5074 | bool | |
5075 | symbol_is_function_or_method (symbol *sym) | |
5076 | { | |
5077 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5078 | { | |
5079 | case TYPE_CODE_FUNC: | |
5080 | case TYPE_CODE_METHOD: | |
5081 | return true; | |
5082 | default: | |
5083 | return false; | |
5084 | } | |
5085 | } | |
5086 | ||
5087 | /* See symtab.h. */ | |
5088 | ||
5089 | bool | |
5090 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5091 | { | |
5092 | switch (MSYMBOL_TYPE (msymbol)) | |
5093 | { | |
5094 | case mst_text: | |
5095 | case mst_text_gnu_ifunc: | |
5096 | case mst_solib_trampoline: | |
5097 | case mst_file_text: | |
5098 | return true; | |
5099 | default: | |
5100 | return false; | |
5101 | } | |
5102 | } | |
5103 | ||
ca31ab1d PA |
5104 | /* See symtab.h. */ |
5105 | ||
5106 | bound_minimal_symbol | |
5107 | find_gnu_ifunc (const symbol *sym) | |
5108 | { | |
5109 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5110 | return {}; | |
5111 | ||
5112 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5113 | symbol_name_match_type::SEARCH_NAME); | |
5114 | struct objfile *objfile = symbol_objfile (sym); | |
5115 | ||
2b1ffcfd | 5116 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5117 | minimal_symbol *ifunc = NULL; |
5118 | ||
5119 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5120 | [&] (minimal_symbol *minsym) | |
5121 | { | |
5122 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5123 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5124 | { |
f50776aa PA |
5125 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5126 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5127 | { | |
5128 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5129 | msym_addr |
5130 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5131 | msym_addr, | |
5132 | current_top_target ()); | |
f50776aa PA |
5133 | } |
5134 | if (msym_addr == address) | |
5135 | { | |
5136 | ifunc = minsym; | |
5137 | return true; | |
5138 | } | |
ca31ab1d PA |
5139 | } |
5140 | return false; | |
5141 | }); | |
5142 | ||
5143 | if (ifunc != NULL) | |
5144 | return {ifunc, objfile}; | |
5145 | return {}; | |
5146 | } | |
5147 | ||
e11c72c7 GB |
5148 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5149 | ||
5150 | static void | |
5151 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5152 | completion_tracker &tracker, |
f9d67a22 | 5153 | complete_symbol_mode mode, |
b5ec771e | 5154 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5155 | const char *text, const char *word, |
5156 | enum type_code code) | |
5157 | { | |
5158 | struct symbol *sym; | |
5159 | const struct block *b; | |
5160 | struct block_iterator iter; | |
5161 | int i; | |
5162 | ||
ff6fa247 GB |
5163 | if (cust == NULL) |
5164 | return; | |
5165 | ||
e11c72c7 GB |
5166 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5167 | { | |
5168 | QUIT; | |
5169 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5170 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5171 | { | |
f9d67a22 PA |
5172 | if (completion_skip_symbol (mode, sym)) |
5173 | continue; | |
5174 | ||
e11c72c7 GB |
5175 | if (code == TYPE_CODE_UNDEF |
5176 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5177 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5178 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5179 | lookup_name, |
e11c72c7 GB |
5180 | text, word); |
5181 | } | |
5182 | } | |
5183 | } | |
5184 | ||
eb3ff9a5 PA |
5185 | void |
5186 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5187 | (completion_tracker &tracker, complete_symbol_mode mode, |
5188 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5189 | const char *text, const char *word, |
5190 | const char *break_on, enum type_code code) | |
c906108c | 5191 | { |
41d27058 JB |
5192 | /* Problem: All of the symbols have to be copied because readline |
5193 | frees them. I'm not going to worry about this; hopefully there | |
5194 | won't be that many. */ | |
5195 | ||
de4f826b | 5196 | struct symbol *sym; |
3977b71f | 5197 | const struct block *b; |
edb3359d | 5198 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5199 | struct block_iterator iter; |
c906108c | 5200 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5201 | const char *sym_text; |
c906108c | 5202 | |
41d27058 | 5203 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5204 | if (mode == complete_symbol_mode::LINESPEC) |
5205 | sym_text = text; | |
5206 | else | |
c906108c | 5207 | { |
6f937416 | 5208 | const char *p; |
c906108c | 5209 | char quote_found; |
6f937416 | 5210 | const char *quote_pos = NULL; |
c906108c SS |
5211 | |
5212 | /* First see if this is a quoted string. */ | |
5213 | quote_found = '\0'; | |
5214 | for (p = text; *p != '\0'; ++p) | |
5215 | { | |
5216 | if (quote_found != '\0') | |
5217 | { | |
5218 | if (*p == quote_found) | |
5219 | /* Found close quote. */ | |
5220 | quote_found = '\0'; | |
5221 | else if (*p == '\\' && p[1] == quote_found) | |
5222 | /* A backslash followed by the quote character | |
c5aa993b | 5223 | doesn't end the string. */ |
c906108c SS |
5224 | ++p; |
5225 | } | |
5226 | else if (*p == '\'' || *p == '"') | |
5227 | { | |
5228 | quote_found = *p; | |
5229 | quote_pos = p; | |
5230 | } | |
5231 | } | |
5232 | if (quote_found == '\'') | |
5233 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5234 | sym_text = quote_pos + 1; | |
5235 | else if (quote_found == '"') | |
5236 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5237 | to complete it any other way. */ |
c94fdfd0 | 5238 | { |
ef0b411a | 5239 | return; |
c94fdfd0 | 5240 | } |
c906108c SS |
5241 | else |
5242 | { | |
5243 | /* It is not a quoted string. Break it based on the characters | |
5244 | which are in symbols. */ | |
5245 | while (p > text) | |
5246 | { | |
95699ff0 | 5247 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5248 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5249 | --p; |
5250 | else | |
5251 | break; | |
5252 | } | |
5253 | sym_text = p; | |
5254 | } | |
5255 | } | |
5256 | ||
1b026119 | 5257 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5258 | |
c906108c SS |
5259 | /* At this point scan through the misc symbol vectors and add each |
5260 | symbol you find to the list. Eventually we want to ignore | |
5261 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5262 | handled by the psymtab code below). */ |
c906108c | 5263 | |
2f68a895 TT |
5264 | if (code == TYPE_CODE_UNDEF) |
5265 | { | |
5325b9bf | 5266 | for (objfile *objfile : all_objfiles (current_program_space)) |
2f68a895 | 5267 | { |
5325b9bf TT |
5268 | for (minimal_symbol *msymbol : objfile_msymbols (objfile)) |
5269 | { | |
5270 | QUIT; | |
9af17804 | 5271 | |
5325b9bf TT |
5272 | if (completion_skip_symbol (mode, msymbol)) |
5273 | continue; | |
f9d67a22 | 5274 | |
5325b9bf TT |
5275 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5276 | sym_text, word); | |
eb3ff9a5 | 5277 | |
5325b9bf TT |
5278 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5279 | sym_text, word); | |
5280 | } | |
2f68a895 TT |
5281 | } |
5282 | } | |
c906108c | 5283 | |
e11c72c7 | 5284 | /* Add completions for all currently loaded symbol tables. */ |
d8aeb77f TT |
5285 | for (objfile *objfile : all_objfiles (current_program_space)) |
5286 | { | |
5287 | for (compunit_symtab *cust : objfile_compunits (objfile)) | |
5288 | add_symtab_completions (cust, tracker, mode, lookup_name, | |
5289 | sym_text, word, code); | |
5290 | } | |
e11c72c7 | 5291 | |
14bc53a8 PA |
5292 | /* Look through the partial symtabs for all symbols which begin by |
5293 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5294 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5295 | lookup_name, |
5296 | NULL, | |
14bc53a8 PA |
5297 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5298 | { | |
5299 | add_symtab_completions (symtab, | |
f9d67a22 | 5300 | tracker, mode, lookup_name, |
1b026119 | 5301 | sym_text, word, code); |
14bc53a8 PA |
5302 | }, |
5303 | ALL_DOMAIN); | |
e11c72c7 | 5304 | |
c906108c | 5305 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5306 | complete on local vars). Also catch fields of types defined in |
5307 | this places which match our text string. Only complete on types | |
c378eb4e | 5308 | visible from current context. */ |
edb3359d DJ |
5309 | |
5310 | b = get_selected_block (0); | |
5311 | surrounding_static_block = block_static_block (b); | |
5312 | surrounding_global_block = block_global_block (b); | |
5313 | if (surrounding_static_block != NULL) | |
5314 | while (b != surrounding_static_block) | |
5315 | { | |
5316 | QUIT; | |
c906108c | 5317 | |
edb3359d DJ |
5318 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5319 | { | |
2f68a895 TT |
5320 | if (code == TYPE_CODE_UNDEF) |
5321 | { | |
b5ec771e | 5322 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5323 | sym_text, word); |
b5ec771e | 5324 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5325 | sym_text, word); |
2f68a895 TT |
5326 | } |
5327 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5328 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5329 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5330 | sym_text, word); |
edb3359d | 5331 | } |
c5aa993b | 5332 | |
edb3359d DJ |
5333 | /* Stop when we encounter an enclosing function. Do not stop for |
5334 | non-inlined functions - the locals of the enclosing function | |
5335 | are in scope for a nested function. */ | |
5336 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5337 | break; | |
5338 | b = BLOCK_SUPERBLOCK (b); | |
5339 | } | |
c906108c | 5340 | |
edb3359d | 5341 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5342 | |
2f68a895 TT |
5343 | if (code == TYPE_CODE_UNDEF) |
5344 | { | |
5345 | if (surrounding_static_block != NULL) | |
5346 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5347 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5348 | sym_text, word); |
edb3359d | 5349 | |
2f68a895 TT |
5350 | if (surrounding_global_block != NULL) |
5351 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5352 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5353 | sym_text, word); |
2f68a895 | 5354 | } |
c906108c | 5355 | |
2f68a895 TT |
5356 | /* Skip macros if we are completing a struct tag -- arguable but |
5357 | usually what is expected. */ | |
5358 | if (current_language->la_macro_expansion == macro_expansion_c | |
5359 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5360 | { |
f6c2623e | 5361 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5362 | |
14bc53a8 PA |
5363 | /* This adds a macro's name to the current completion list. */ |
5364 | auto add_macro_name = [&] (const char *macro_name, | |
5365 | const macro_definition *, | |
5366 | macro_source_file *, | |
5367 | int) | |
5368 | { | |
1b026119 PA |
5369 | completion_list_add_name (tracker, language_c, macro_name, |
5370 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5371 | }; |
5372 | ||
9a044a89 TT |
5373 | /* Add any macros visible in the default scope. Note that this |
5374 | may yield the occasional wrong result, because an expression | |
5375 | might be evaluated in a scope other than the default. For | |
5376 | example, if the user types "break file:line if <TAB>", the | |
5377 | resulting expression will be evaluated at "file:line" -- but | |
5378 | at there does not seem to be a way to detect this at | |
5379 | completion time. */ | |
5380 | scope = default_macro_scope (); | |
5381 | if (scope) | |
f6c2623e TT |
5382 | macro_for_each_in_scope (scope->file, scope->line, |
5383 | add_macro_name); | |
9a044a89 TT |
5384 | |
5385 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5386 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5387 | } |
ef0b411a GB |
5388 | } |
5389 | ||
eb3ff9a5 PA |
5390 | void |
5391 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5392 | complete_symbol_mode mode, |
b5ec771e | 5393 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5394 | const char *text, const char *word, |
5395 | enum type_code code) | |
f55ee35c | 5396 | { |
c6756f62 | 5397 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5398 | name_match_type, |
eb3ff9a5 PA |
5399 | text, word, "", |
5400 | code); | |
f55ee35c JK |
5401 | } |
5402 | ||
eb3ff9a5 PA |
5403 | /* Collect all symbols (regardless of class) which begin by matching |
5404 | TEXT. */ | |
41d27058 | 5405 | |
eb3ff9a5 PA |
5406 | void |
5407 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5408 | complete_symbol_mode mode, |
b5ec771e | 5409 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5410 | const char *text, const char *word) |
41d27058 | 5411 | { |
c6756f62 | 5412 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5413 | name_match_type, |
eb3ff9a5 PA |
5414 | text, word, |
5415 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5416 | } |
5417 | ||
eb3ff9a5 PA |
5418 | /* Like collect_symbol_completion_matches, but only collect |
5419 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5420 | |
eb3ff9a5 PA |
5421 | void |
5422 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5423 | const char *text, const char *word, | |
5424 | enum type_code code) | |
2f68a895 | 5425 | { |
c6756f62 | 5426 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5427 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5428 | |
2f68a895 TT |
5429 | gdb_assert (code == TYPE_CODE_UNION |
5430 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5431 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5432 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5433 | name_match_type, |
eb3ff9a5 | 5434 | text, word, code); |
41d27058 JB |
5435 | } |
5436 | ||
eb3ff9a5 PA |
5437 | /* Like collect_symbol_completion_matches, but collects a list of |
5438 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5439 | |
eb3ff9a5 PA |
5440 | void |
5441 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5442 | complete_symbol_mode mode, |
b5ec771e | 5443 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5444 | const char *text, const char *word, |
5445 | const char *srcfile) | |
c94fdfd0 | 5446 | { |
c94fdfd0 | 5447 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5448 | const char *sym_text; |
c94fdfd0 EZ |
5449 | |
5450 | /* Now look for the symbol we are supposed to complete on. | |
5451 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5452 | if (mode == complete_symbol_mode::LINESPEC) |
5453 | sym_text = text; | |
5454 | else | |
c94fdfd0 | 5455 | { |
6f937416 | 5456 | const char *p; |
c94fdfd0 | 5457 | char quote_found; |
6f937416 | 5458 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5459 | |
5460 | /* First see if this is a quoted string. */ | |
5461 | quote_found = '\0'; | |
5462 | for (p = text; *p != '\0'; ++p) | |
5463 | { | |
5464 | if (quote_found != '\0') | |
5465 | { | |
5466 | if (*p == quote_found) | |
5467 | /* Found close quote. */ | |
5468 | quote_found = '\0'; | |
5469 | else if (*p == '\\' && p[1] == quote_found) | |
5470 | /* A backslash followed by the quote character | |
5471 | doesn't end the string. */ | |
5472 | ++p; | |
5473 | } | |
5474 | else if (*p == '\'' || *p == '"') | |
5475 | { | |
5476 | quote_found = *p; | |
5477 | quote_pos = p; | |
5478 | } | |
5479 | } | |
5480 | if (quote_found == '\'') | |
5481 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5482 | sym_text = quote_pos + 1; | |
5483 | else if (quote_found == '"') | |
5484 | /* A double-quoted string is never a symbol, nor does it make sense | |
5485 | to complete it any other way. */ | |
5486 | { | |
eb3ff9a5 | 5487 | return; |
c94fdfd0 EZ |
5488 | } |
5489 | else | |
5490 | { | |
69636828 AF |
5491 | /* Not a quoted string. */ |
5492 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5493 | } |
5494 | } | |
5495 | ||
1b026119 | 5496 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5497 | |
8f14146e PA |
5498 | /* Go through symtabs for SRCFILE and check the externs and statics |
5499 | for symbols which match. */ | |
5500 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5501 | { |
8f14146e | 5502 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5503 | tracker, mode, lookup_name, |
1b026119 | 5504 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5505 | return false; |
5506 | }); | |
e27852be DE |
5507 | } |
5508 | ||
c94fdfd0 EZ |
5509 | /* A helper function for make_source_files_completion_list. It adds |
5510 | another file name to a list of possible completions, growing the | |
5511 | list as necessary. */ | |
5512 | ||
5513 | static void | |
6f937416 | 5514 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5515 | completion_list *list) |
c94fdfd0 | 5516 | { |
60a20c19 | 5517 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5518 | } |
5519 | ||
5520 | static int | |
5521 | not_interesting_fname (const char *fname) | |
5522 | { | |
5523 | static const char *illegal_aliens[] = { | |
5524 | "_globals_", /* inserted by coff_symtab_read */ | |
5525 | NULL | |
5526 | }; | |
5527 | int i; | |
5528 | ||
5529 | for (i = 0; illegal_aliens[i]; i++) | |
5530 | { | |
0ba1096a | 5531 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5532 | return 1; |
5533 | } | |
5534 | return 0; | |
5535 | } | |
5536 | ||
ccefe4c4 TT |
5537 | /* An object of this type is passed as the user_data argument to |
5538 | map_partial_symbol_filenames. */ | |
5539 | struct add_partial_filename_data | |
5540 | { | |
9fdc877b | 5541 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5542 | const char *text; |
5543 | const char *word; | |
ccefe4c4 | 5544 | int text_len; |
eb3ff9a5 | 5545 | completion_list *list; |
ccefe4c4 TT |
5546 | }; |
5547 | ||
5548 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5549 | |
ccefe4c4 | 5550 | static void |
2837d59e | 5551 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5552 | void *user_data) |
5553 | { | |
19ba03f4 SM |
5554 | struct add_partial_filename_data *data |
5555 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5556 | |
5557 | if (not_interesting_fname (filename)) | |
5558 | return; | |
bbf2f4df | 5559 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5560 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5561 | { |
5562 | /* This file matches for a completion; add it to the | |
5563 | current list of matches. */ | |
49c4e619 | 5564 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5565 | } |
5566 | else | |
5567 | { | |
5568 | const char *base_name = lbasename (filename); | |
433759f7 | 5569 | |
ccefe4c4 | 5570 | if (base_name != filename |
bbf2f4df | 5571 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5572 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5573 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5574 | } |
5575 | } | |
5576 | ||
eb3ff9a5 | 5577 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5578 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5579 | program. */ |
c94fdfd0 | 5580 | |
eb3ff9a5 | 5581 | completion_list |
6f937416 | 5582 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5583 | { |
52f0bd74 | 5584 | struct objfile *objfile; |
c94fdfd0 | 5585 | size_t text_len = strlen (text); |
eb3ff9a5 | 5586 | completion_list list; |
31889e00 | 5587 | const char *base_name; |
ccefe4c4 | 5588 | struct add_partial_filename_data datum; |
c94fdfd0 | 5589 | |
c94fdfd0 EZ |
5590 | if (!have_full_symbols () && !have_partial_symbols ()) |
5591 | return list; | |
5592 | ||
bbf2f4df | 5593 | filename_seen_cache filenames_seen; |
9fdc877b | 5594 | |
43f3e411 | 5595 | ALL_FILETABS (objfile, cu, s) |
c94fdfd0 EZ |
5596 | { |
5597 | if (not_interesting_fname (s->filename)) | |
5598 | continue; | |
bbf2f4df | 5599 | if (!filenames_seen.seen (s->filename) |
0ba1096a | 5600 | && filename_ncmp (s->filename, text, text_len) == 0) |
c94fdfd0 EZ |
5601 | { |
5602 | /* This file matches for a completion; add it to the current | |
5603 | list of matches. */ | |
49c4e619 | 5604 | add_filename_to_list (s->filename, text, word, &list); |
c94fdfd0 EZ |
5605 | } |
5606 | else | |
5607 | { | |
5608 | /* NOTE: We allow the user to type a base name when the | |
5609 | debug info records leading directories, but not the other | |
5610 | way around. This is what subroutines of breakpoint | |
5611 | command do when they parse file names. */ | |
31889e00 | 5612 | base_name = lbasename (s->filename); |
c94fdfd0 | 5613 | if (base_name != s->filename |
bbf2f4df | 5614 | && !filenames_seen.seen (base_name) |
0ba1096a | 5615 | && filename_ncmp (base_name, text, text_len) == 0) |
49c4e619 | 5616 | add_filename_to_list (base_name, text, word, &list); |
c94fdfd0 EZ |
5617 | } |
5618 | } | |
5619 | ||
bbf2f4df | 5620 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5621 | datum.text = text; |
5622 | datum.word = word; | |
5623 | datum.text_len = text_len; | |
5624 | datum.list = &list; | |
bb4142cf DE |
5625 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5626 | 0 /*need_fullname*/); | |
9fdc877b | 5627 | |
c94fdfd0 EZ |
5628 | return list; |
5629 | } | |
c906108c | 5630 | \f |
51cc5b07 | 5631 | /* Track MAIN */ |
32ac0d11 TT |
5632 | |
5633 | /* Return the "main_info" object for the current program space. If | |
5634 | the object has not yet been created, create it and fill in some | |
5635 | default values. */ | |
5636 | ||
5637 | static struct main_info * | |
5638 | get_main_info (void) | |
5639 | { | |
19ba03f4 SM |
5640 | struct main_info *info |
5641 | = (struct main_info *) program_space_data (current_program_space, | |
32ac0d11 TT |
5642 | main_progspace_key); |
5643 | ||
5644 | if (info == NULL) | |
5645 | { | |
3d548a53 TT |
5646 | /* It may seem strange to store the main name in the progspace |
5647 | and also in whatever objfile happens to see a main name in | |
5648 | its debug info. The reason for this is mainly historical: | |
5649 | gdb returned "main" as the name even if no function named | |
5650 | "main" was defined the program; and this approach lets us | |
5651 | keep compatibility. */ | |
32ac0d11 TT |
5652 | info = XCNEW (struct main_info); |
5653 | info->language_of_main = language_unknown; | |
5654 | set_program_space_data (current_program_space, main_progspace_key, | |
5655 | info); | |
5656 | } | |
5657 | ||
5658 | return info; | |
5659 | } | |
5660 | ||
5661 | /* A cleanup to destroy a struct main_info when a progspace is | |
5662 | destroyed. */ | |
5663 | ||
5664 | static void | |
5665 | main_info_cleanup (struct program_space *pspace, void *data) | |
5666 | { | |
19ba03f4 | 5667 | struct main_info *info = (struct main_info *) data; |
32ac0d11 TT |
5668 | |
5669 | if (info != NULL) | |
5670 | xfree (info->name_of_main); | |
5671 | xfree (info); | |
5672 | } | |
51cc5b07 | 5673 | |
3d548a53 | 5674 | static void |
9e6c82ad | 5675 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5676 | { |
32ac0d11 TT |
5677 | struct main_info *info = get_main_info (); |
5678 | ||
5679 | if (info->name_of_main != NULL) | |
51cc5b07 | 5680 | { |
32ac0d11 TT |
5681 | xfree (info->name_of_main); |
5682 | info->name_of_main = NULL; | |
5683 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5684 | } |
5685 | if (name != NULL) | |
5686 | { | |
32ac0d11 TT |
5687 | info->name_of_main = xstrdup (name); |
5688 | info->language_of_main = lang; | |
51cc5b07 AC |
5689 | } |
5690 | } | |
5691 | ||
ea53e89f JB |
5692 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5693 | accordingly. */ | |
5694 | ||
5695 | static void | |
5696 | find_main_name (void) | |
5697 | { | |
cd6c7346 | 5698 | const char *new_main_name; |
3d548a53 TT |
5699 | |
5700 | /* First check the objfiles to see whether a debuginfo reader has | |
5701 | picked up the appropriate main name. Historically the main name | |
5702 | was found in a more or less random way; this approach instead | |
5703 | relies on the order of objfile creation -- which still isn't | |
5704 | guaranteed to get the correct answer, but is just probably more | |
5705 | accurate. */ | |
aed57c53 TT |
5706 | for (objfile *objfile : all_objfiles (current_program_space)) |
5707 | { | |
5708 | if (objfile->per_bfd->name_of_main != NULL) | |
5709 | { | |
5710 | set_main_name (objfile->per_bfd->name_of_main, | |
5711 | objfile->per_bfd->language_of_main); | |
5712 | return; | |
5713 | } | |
5714 | } | |
ea53e89f JB |
5715 | |
5716 | /* Try to see if the main procedure is in Ada. */ | |
5717 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5718 | be to add a new method in the language vector, and call this | |
5719 | method for each language until one of them returns a non-empty | |
5720 | name. This would allow us to remove this hard-coded call to | |
5721 | an Ada function. It is not clear that this is a better approach | |
5722 | at this point, because all methods need to be written in a way | |
c378eb4e | 5723 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5724 | important that a method does not return a wrong name for the main |
5725 | procedure if the main procedure is actually written in a different | |
5726 | language. It is easy to guaranty this with Ada, since we use a | |
5727 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5728 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5729 | be guarantied for languages such as C, for instance. This suggests |
5730 | that order of call for these methods becomes important, which means | |
5731 | a more complicated approach. */ | |
5732 | new_main_name = ada_main_name (); | |
5733 | if (new_main_name != NULL) | |
9af17804 | 5734 | { |
9e6c82ad | 5735 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5736 | return; |
5737 | } | |
5738 | ||
63778547 IB |
5739 | new_main_name = d_main_name (); |
5740 | if (new_main_name != NULL) | |
5741 | { | |
5742 | set_main_name (new_main_name, language_d); | |
5743 | return; | |
5744 | } | |
5745 | ||
a766d390 DE |
5746 | new_main_name = go_main_name (); |
5747 | if (new_main_name != NULL) | |
5748 | { | |
9e6c82ad | 5749 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5750 | return; |
5751 | } | |
5752 | ||
cd6c7346 PM |
5753 | new_main_name = pascal_main_name (); |
5754 | if (new_main_name != NULL) | |
9af17804 | 5755 | { |
9e6c82ad | 5756 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5757 | return; |
5758 | } | |
5759 | ||
ea53e89f JB |
5760 | /* The languages above didn't identify the name of the main procedure. |
5761 | Fallback to "main". */ | |
9e6c82ad | 5762 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5763 | } |
5764 | ||
51cc5b07 AC |
5765 | char * |
5766 | main_name (void) | |
5767 | { | |
32ac0d11 TT |
5768 | struct main_info *info = get_main_info (); |
5769 | ||
5770 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5771 | find_main_name (); |
5772 | ||
32ac0d11 | 5773 | return info->name_of_main; |
51cc5b07 AC |
5774 | } |
5775 | ||
9e6c82ad TT |
5776 | /* Return the language of the main function. If it is not known, |
5777 | return language_unknown. */ | |
5778 | ||
5779 | enum language | |
5780 | main_language (void) | |
5781 | { | |
32ac0d11 TT |
5782 | struct main_info *info = get_main_info (); |
5783 | ||
5784 | if (info->name_of_main == NULL) | |
5785 | find_main_name (); | |
5786 | ||
5787 | return info->language_of_main; | |
9e6c82ad TT |
5788 | } |
5789 | ||
ea53e89f JB |
5790 | /* Handle ``executable_changed'' events for the symtab module. */ |
5791 | ||
5792 | static void | |
781b42b0 | 5793 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5794 | { |
5795 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5796 | set_main_name (NULL, language_unknown); |
ea53e89f | 5797 | } |
51cc5b07 | 5798 | |
a6c727b2 DJ |
5799 | /* Return 1 if the supplied producer string matches the ARM RealView |
5800 | compiler (armcc). */ | |
5801 | ||
5802 | int | |
5803 | producer_is_realview (const char *producer) | |
5804 | { | |
5805 | static const char *const arm_idents[] = { | |
5806 | "ARM C Compiler, ADS", | |
5807 | "Thumb C Compiler, ADS", | |
5808 | "ARM C++ Compiler, ADS", | |
5809 | "Thumb C++ Compiler, ADS", | |
5810 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5811 | "ARM C/C++ Compiler, RVCT" | |
5812 | }; | |
5813 | int i; | |
5814 | ||
5815 | if (producer == NULL) | |
5816 | return 0; | |
5817 | ||
5818 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 5819 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
5820 | return 1; |
5821 | ||
5822 | return 0; | |
5823 | } | |
ed0616c6 | 5824 | |
f1e6e072 TT |
5825 | \f |
5826 | ||
5827 | /* The next index to hand out in response to a registration request. */ | |
5828 | ||
5829 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5830 | ||
5831 | /* The maximum number of "aclass" registrations we support. This is | |
5832 | constant for convenience. */ | |
5833 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5834 | ||
5835 | /* The objects representing the various "aclass" values. The elements | |
5836 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5837 | elements are those registered at gdb initialization time. */ | |
5838 | ||
5839 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5840 | ||
5841 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5842 | so that it can be const. */ | |
5843 | ||
5844 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5845 | ||
5846 | /* Make sure we saved enough room in struct symbol. */ | |
5847 | ||
5848 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5849 | ||
5850 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5851 | is the ops vector associated with this index. This returns the new | |
5852 | index, which should be used as the aclass_index field for symbols | |
5853 | of this type. */ | |
5854 | ||
5855 | int | |
5856 | register_symbol_computed_impl (enum address_class aclass, | |
5857 | const struct symbol_computed_ops *ops) | |
5858 | { | |
5859 | int result = next_aclass_value++; | |
5860 | ||
5861 | gdb_assert (aclass == LOC_COMPUTED); | |
5862 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5863 | symbol_impl[result].aclass = aclass; | |
5864 | symbol_impl[result].ops_computed = ops; | |
5865 | ||
24d6c2a0 TT |
5866 | /* Sanity check OPS. */ |
5867 | gdb_assert (ops != NULL); | |
5868 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
5869 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 5870 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
5871 | gdb_assert (ops->read_variable != NULL); |
5872 | ||
f1e6e072 TT |
5873 | return result; |
5874 | } | |
5875 | ||
5876 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
5877 | OPS is the ops vector associated with this index. This returns the | |
5878 | new index, which should be used as the aclass_index field for symbols | |
5879 | of this type. */ | |
5880 | ||
5881 | int | |
5882 | register_symbol_block_impl (enum address_class aclass, | |
5883 | const struct symbol_block_ops *ops) | |
5884 | { | |
5885 | int result = next_aclass_value++; | |
5886 | ||
5887 | gdb_assert (aclass == LOC_BLOCK); | |
5888 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5889 | symbol_impl[result].aclass = aclass; | |
5890 | symbol_impl[result].ops_block = ops; | |
5891 | ||
5892 | /* Sanity check OPS. */ | |
5893 | gdb_assert (ops != NULL); | |
5894 | gdb_assert (ops->find_frame_base_location != NULL); | |
5895 | ||
5896 | return result; | |
5897 | } | |
5898 | ||
5899 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
5900 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
5901 | this index. This returns the new index, which should be used as | |
5902 | the aclass_index field for symbols of this type. */ | |
5903 | ||
5904 | int | |
5905 | register_symbol_register_impl (enum address_class aclass, | |
5906 | const struct symbol_register_ops *ops) | |
5907 | { | |
5908 | int result = next_aclass_value++; | |
5909 | ||
5910 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
5911 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5912 | symbol_impl[result].aclass = aclass; | |
5913 | symbol_impl[result].ops_register = ops; | |
5914 | ||
5915 | return result; | |
5916 | } | |
5917 | ||
5918 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
5919 | address_class. */ | |
5920 | ||
5921 | static void | |
5922 | initialize_ordinary_address_classes (void) | |
5923 | { | |
5924 | int i; | |
5925 | ||
5926 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 5927 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
5928 | } |
5929 | ||
5930 | \f | |
5931 | ||
1994afbf DE |
5932 | /* Helper function to initialize the fields of an objfile-owned symbol. |
5933 | It assumed that *SYM is already all zeroes. */ | |
5934 | ||
5935 | static void | |
5936 | initialize_objfile_symbol_1 (struct symbol *sym) | |
5937 | { | |
5938 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
5939 | SYMBOL_SECTION (sym) = -1; | |
5940 | } | |
5941 | ||
5942 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
5943 | |
5944 | void | |
38bf1463 | 5945 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
5946 | { |
5947 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 5948 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
5949 | } |
5950 | ||
5951 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
5952 | obstack. */ | |
5953 | ||
5954 | struct symbol * | |
5955 | allocate_symbol (struct objfile *objfile) | |
5956 | { | |
5957 | struct symbol *result; | |
5958 | ||
5959 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 5960 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5961 | |
5962 | return result; | |
5963 | } | |
5964 | ||
5965 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
5966 | obstack. */ | |
5967 | ||
5968 | struct template_symbol * | |
5969 | allocate_template_symbol (struct objfile *objfile) | |
5970 | { | |
5971 | struct template_symbol *result; | |
5972 | ||
5973 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 5974 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5975 | |
5976 | return result; | |
5977 | } | |
5978 | ||
08be3fe3 DE |
5979 | /* See symtab.h. */ |
5980 | ||
5981 | struct objfile * | |
5982 | symbol_objfile (const struct symbol *symbol) | |
5983 | { | |
1994afbf DE |
5984 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5985 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
5986 | } |
5987 | ||
5988 | /* See symtab.h. */ | |
5989 | ||
5990 | struct gdbarch * | |
5991 | symbol_arch (const struct symbol *symbol) | |
5992 | { | |
1994afbf DE |
5993 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
5994 | return symbol->owner.arch; | |
5995 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
5996 | } |
5997 | ||
5998 | /* See symtab.h. */ | |
5999 | ||
6000 | struct symtab * | |
6001 | symbol_symtab (const struct symbol *symbol) | |
6002 | { | |
1994afbf DE |
6003 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6004 | return symbol->owner.symtab; | |
08be3fe3 DE |
6005 | } |
6006 | ||
6007 | /* See symtab.h. */ | |
6008 | ||
6009 | void | |
6010 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6011 | { | |
1994afbf DE |
6012 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6013 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6014 | } |
6015 | ||
e623cf5d TT |
6016 | \f |
6017 | ||
c906108c | 6018 | void |
fba45db2 | 6019 | _initialize_symtab (void) |
c906108c | 6020 | { |
f1e6e072 TT |
6021 | initialize_ordinary_address_classes (); |
6022 | ||
32ac0d11 TT |
6023 | main_progspace_key |
6024 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
6025 | ||
f57d2163 DE |
6026 | symbol_cache_key |
6027 | = register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup); | |
6028 | ||
12615cba PW |
6029 | add_info ("variables", info_variables_command, |
6030 | info_print_args_help (_("\ | |
6031 | All global and static variable names or those matching REGEXPs.\n\ | |
6032 | Usage: info variables [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6033 | Prints the global and static variables.\n"), | |
6034 | _("global and static variables"))); | |
c906108c | 6035 | if (dbx_commands) |
12615cba PW |
6036 | add_com ("whereis", class_info, info_variables_command, |
6037 | info_print_args_help (_("\ | |
6038 | All global and static variable names, or those matching REGEXPs.\n\ | |
6039 | Usage: whereis [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6040 | Prints the global and static variables.\n"), | |
6041 | _("global and static variables"))); | |
c906108c | 6042 | |
11db9430 | 6043 | add_info ("functions", info_functions_command, |
12615cba PW |
6044 | info_print_args_help (_("\ |
6045 | All function names or those matching REGEXPs.\n\ | |
6046 | Usage: info functions [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6047 | Prints the functions.\n"), | |
6048 | _("functions"))); | |
c906108c SS |
6049 | |
6050 | /* FIXME: This command has at least the following problems: | |
6051 | 1. It prints builtin types (in a very strange and confusing fashion). | |
6052 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
6053 | typedef struct foo *FOO |
6054 | type_print prints "FOO" when we want to make it (in this situation) | |
6055 | print "struct foo *". | |
c906108c SS |
6056 | I also think "ptype" or "whatis" is more likely to be useful (but if |
6057 | there is much disagreement "info types" can be fixed). */ | |
11db9430 | 6058 | add_info ("types", info_types_command, |
1bedd215 | 6059 | _("All type names, or those matching REGEXP.")); |
c906108c | 6060 | |
11db9430 | 6061 | add_info ("sources", info_sources_command, |
1bedd215 | 6062 | _("Source files in the program.")); |
c906108c SS |
6063 | |
6064 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6065 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6066 | |
717d2f5a JB |
6067 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6068 | multiple_symbols_modes, &multiple_symbols_mode, | |
6069 | _("\ | |
6070 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
6071 | in an expression."), _("\ | |
6072 | Show how the debugger handles ambiguities in expressions."), _("\ | |
6073 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6074 | NULL, NULL, &setlist, &showlist); | |
6075 | ||
c011a4f4 DE |
6076 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6077 | &basenames_may_differ, _("\ | |
6078 | Set whether a source file may have multiple base names."), _("\ | |
6079 | Show whether a source file may have multiple base names."), _("\ | |
6080 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6081 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6082 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6083 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6084 | but it allows the same file be known by more than one base name.\n\ | |
6085 | If not set (the default), all source files are assumed to have just\n\ | |
6086 | one base name, and gdb will do file name comparisons more efficiently."), | |
6087 | NULL, NULL, | |
6088 | &setlist, &showlist); | |
6089 | ||
db0fec5c DE |
6090 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6091 | _("Set debugging of symbol table creation."), | |
6092 | _("Show debugging of symbol table creation."), _("\ | |
6093 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6094 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6095 | A value greater than 1 provides more verbose information."), | |
6096 | NULL, | |
6097 | NULL, | |
6098 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6099 | |
cc485e62 DE |
6100 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6101 | _("\ | |
6102 | Set debugging of symbol lookup."), _("\ | |
6103 | Show debugging of symbol lookup."), _("\ | |
6104 | When enabled (non-zero), symbol lookups are logged."), | |
6105 | NULL, NULL, | |
6106 | &setdebuglist, &showdebuglist); | |
6107 | ||
f57d2163 DE |
6108 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6109 | &new_symbol_cache_size, | |
6110 | _("Set the size of the symbol cache."), | |
6111 | _("Show the size of the symbol cache."), _("\ | |
6112 | The size of the symbol cache.\n\ | |
6113 | If zero then the symbol cache is disabled."), | |
6114 | set_symbol_cache_size_handler, NULL, | |
6115 | &maintenance_set_cmdlist, | |
6116 | &maintenance_show_cmdlist); | |
6117 | ||
6118 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6119 | _("Dump the symbol cache for each program space."), | |
6120 | &maintenanceprintlist); | |
6121 | ||
6122 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6123 | maintenance_print_symbol_cache_statistics, | |
6124 | _("Print symbol cache statistics for each program space."), | |
6125 | &maintenanceprintlist); | |
6126 | ||
6127 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6128 | maintenance_flush_symbol_cache, | |
6129 | _("Flush the symbol cache for each program space."), | |
6130 | &maintenancelist); | |
6131 | ||
76727919 TT |
6132 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6133 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6134 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6135 | } |