Commit | Line | Data |
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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" |
1ed9f74e | 44 | #include "cli/cli-style.h" |
cce0e923 | 45 | #include "fnmatch.h" |
2de7ced7 | 46 | #include "hashtab.h" |
12615cba | 47 | #include "typeprint.h" |
2de7ced7 | 48 | |
04ea0df1 | 49 | #include "gdb_obstack.h" |
fe898f56 | 50 | #include "block.h" |
de4f826b | 51 | #include "dictionary.h" |
c906108c SS |
52 | |
53 | #include <sys/types.h> | |
54 | #include <fcntl.h> | |
53ce3c39 | 55 | #include <sys/stat.h> |
c906108c | 56 | #include <ctype.h> |
015a42b4 | 57 | #include "cp-abi.h" |
71c25dea | 58 | #include "cp-support.h" |
76727919 | 59 | #include "observable.h" |
3a40aaa0 | 60 | #include "solist.h" |
9a044a89 TT |
61 | #include "macrotab.h" |
62 | #include "macroscope.h" | |
c906108c | 63 | |
270140bd | 64 | #include "parser-defs.h" |
ef0b411a | 65 | #include "completer.h" |
5ed8105e | 66 | #include "progspace-and-thread.h" |
2d7cc5c7 | 67 | #include "common/gdb_optional.h" |
bbf2f4df | 68 | #include "filename-seen-cache.h" |
46a62268 | 69 | #include "arch-utils.h" |
b9c04fb2 | 70 | #include <algorithm> |
b4987c95 | 71 | #include "common/pathstuff.h" |
ccefe4c4 | 72 | |
ff6c39cf | 73 | /* Forward declarations for local functions. */ |
c906108c | 74 | |
0b39b52e | 75 | static void rbreak_command (const char *, int); |
c906108c | 76 | |
f8eba3c6 | 77 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 78 | |
d12307c1 PMR |
79 | static struct block_symbol |
80 | lookup_symbol_aux (const char *name, | |
de63c46b | 81 | symbol_name_match_type match_type, |
d12307c1 PMR |
82 | const struct block *block, |
83 | const domain_enum domain, | |
84 | enum language language, | |
85 | struct field_of_this_result *); | |
fba7f19c | 86 | |
e4051eeb | 87 | static |
d12307c1 | 88 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 89 | symbol_name_match_type match_type, |
d12307c1 PMR |
90 | const struct block *block, |
91 | const domain_enum domain, | |
92 | enum language language); | |
8155455b | 93 | |
d12307c1 | 94 | static struct block_symbol |
fe2a438d DE |
95 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
96 | const char *name, const domain_enum domain); | |
c906108c | 97 | |
32ac0d11 TT |
98 | /* Program space key for finding name and language of "main". */ |
99 | ||
100 | static const struct program_space_data *main_progspace_key; | |
101 | ||
102 | /* Type of the data stored on the program space. */ | |
103 | ||
104 | struct main_info | |
105 | { | |
106 | /* Name of "main". */ | |
107 | ||
108 | char *name_of_main; | |
109 | ||
110 | /* Language of "main". */ | |
111 | ||
112 | enum language language_of_main; | |
113 | }; | |
114 | ||
f57d2163 DE |
115 | /* Program space key for finding its symbol cache. */ |
116 | ||
117 | static const struct program_space_data *symbol_cache_key; | |
118 | ||
119 | /* The default symbol cache size. | |
120 | There is no extra cpu cost for large N (except when flushing the cache, | |
121 | which is rare). The value here is just a first attempt. A better default | |
122 | value may be higher or lower. A prime number can make up for a bad hash | |
123 | computation, so that's why the number is what it is. */ | |
124 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
125 | ||
126 | /* The maximum symbol cache size. | |
127 | There's no method to the decision of what value to use here, other than | |
128 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
129 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
130 | ||
131 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
132 | symbol in any objfile. */ | |
d12307c1 PMR |
133 | #define SYMBOL_LOOKUP_FAILED \ |
134 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
135 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
136 | |
137 | /* Recording lookups that don't find the symbol is just as important, if not | |
138 | more so, than recording found symbols. */ | |
139 | ||
140 | enum symbol_cache_slot_state | |
141 | { | |
142 | SYMBOL_SLOT_UNUSED, | |
143 | SYMBOL_SLOT_NOT_FOUND, | |
144 | SYMBOL_SLOT_FOUND | |
145 | }; | |
146 | ||
52059ffd TT |
147 | struct symbol_cache_slot |
148 | { | |
149 | enum symbol_cache_slot_state state; | |
150 | ||
151 | /* The objfile that was current when the symbol was looked up. | |
152 | This is only needed for global blocks, but for simplicity's sake | |
153 | we allocate the space for both. If data shows the extra space used | |
154 | for static blocks is a problem, we can split things up then. | |
155 | ||
156 | Global blocks need cache lookup to include the objfile context because | |
157 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
158 | which can traverse objfiles in, effectively, any order, depending on | |
159 | the current objfile, thus affecting which symbol is found. Normally, | |
160 | only the current objfile is searched first, and then the rest are | |
161 | searched in recorded order; but putting cache lookup inside | |
162 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
163 | Instead we just make the current objfile part of the context of | |
164 | cache lookup. This means we can record the same symbol multiple times, | |
165 | each with a different "current objfile" that was in effect when the | |
166 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
167 | const struct objfile *objfile_context; | |
168 | ||
169 | union | |
170 | { | |
d12307c1 | 171 | struct block_symbol found; |
52059ffd TT |
172 | struct |
173 | { | |
174 | char *name; | |
175 | domain_enum domain; | |
176 | } not_found; | |
177 | } value; | |
178 | }; | |
179 | ||
f57d2163 DE |
180 | /* Symbols don't specify global vs static block. |
181 | So keep them in separate caches. */ | |
182 | ||
183 | struct block_symbol_cache | |
184 | { | |
185 | unsigned int hits; | |
186 | unsigned int misses; | |
187 | unsigned int collisions; | |
188 | ||
189 | /* SYMBOLS is a variable length array of this size. | |
190 | One can imagine that in general one cache (global/static) should be a | |
191 | fraction of the size of the other, but there's no data at the moment | |
192 | on which to decide. */ | |
193 | unsigned int size; | |
194 | ||
52059ffd | 195 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
196 | }; |
197 | ||
198 | /* The symbol cache. | |
199 | ||
200 | Searching for symbols in the static and global blocks over multiple objfiles | |
201 | again and again can be slow, as can searching very big objfiles. This is a | |
202 | simple cache to improve symbol lookup performance, which is critical to | |
203 | overall gdb performance. | |
204 | ||
205 | Symbols are hashed on the name, its domain, and block. | |
206 | They are also hashed on their objfile for objfile-specific lookups. */ | |
207 | ||
208 | struct symbol_cache | |
209 | { | |
210 | struct block_symbol_cache *global_symbols; | |
211 | struct block_symbol_cache *static_symbols; | |
212 | }; | |
213 | ||
45cfd468 | 214 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 215 | unsigned int symtab_create_debug = 0; |
45cfd468 | 216 | |
cc485e62 DE |
217 | /* When non-zero, print debugging messages related to symbol lookup. */ |
218 | unsigned int symbol_lookup_debug = 0; | |
219 | ||
f57d2163 DE |
220 | /* The size of the cache is staged here. */ |
221 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
222 | ||
223 | /* The current value of the symbol cache size. | |
224 | This is saved so that if the user enters a value too big we can restore | |
225 | the original value from here. */ | |
226 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
227 | ||
c011a4f4 DE |
228 | /* Non-zero if a file may be known by two different basenames. |
229 | This is the uncommon case, and significantly slows down gdb. | |
230 | Default set to "off" to not slow down the common case. */ | |
231 | int basenames_may_differ = 0; | |
232 | ||
717d2f5a JB |
233 | /* Allow the user to configure the debugger behavior with respect |
234 | to multiple-choice menus when more than one symbol matches during | |
235 | a symbol lookup. */ | |
236 | ||
7fc830e2 MK |
237 | const char multiple_symbols_ask[] = "ask"; |
238 | const char multiple_symbols_all[] = "all"; | |
239 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 240 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
241 | { |
242 | multiple_symbols_ask, | |
243 | multiple_symbols_all, | |
244 | multiple_symbols_cancel, | |
245 | NULL | |
246 | }; | |
247 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
248 | ||
249 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
250 | ||
251 | const char * | |
252 | multiple_symbols_select_mode (void) | |
253 | { | |
254 | return multiple_symbols_mode; | |
255 | } | |
256 | ||
20c681d1 DE |
257 | /* Return the name of a domain_enum. */ |
258 | ||
259 | const char * | |
260 | domain_name (domain_enum e) | |
261 | { | |
262 | switch (e) | |
263 | { | |
264 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
265 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
266 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 267 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
268 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
269 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
270 | default: gdb_assert_not_reached ("bad domain_enum"); | |
271 | } | |
272 | } | |
273 | ||
274 | /* Return the name of a search_domain . */ | |
275 | ||
276 | const char * | |
277 | search_domain_name (enum search_domain e) | |
278 | { | |
279 | switch (e) | |
280 | { | |
281 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
282 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
283 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
284 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
285 | default: gdb_assert_not_reached ("bad search_domain"); | |
286 | } | |
287 | } | |
288 | ||
43f3e411 | 289 | /* See symtab.h. */ |
db0fec5c | 290 | |
43f3e411 DE |
291 | struct symtab * |
292 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 293 | { |
43f3e411 | 294 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 295 | |
43f3e411 DE |
296 | /* The primary file symtab is the first one in the list. */ |
297 | return COMPUNIT_FILETABS (cust); | |
298 | } | |
299 | ||
300 | /* See symtab.h. */ | |
301 | ||
302 | enum language | |
303 | compunit_language (const struct compunit_symtab *cust) | |
304 | { | |
305 | struct symtab *symtab = compunit_primary_filetab (cust); | |
306 | ||
307 | /* The language of the compunit symtab is the language of its primary | |
308 | source file. */ | |
309 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
310 | } |
311 | ||
1ed9f74e PW |
312 | /* See symtab.h. */ |
313 | ||
314 | bool | |
315 | minimal_symbol::data_p () const | |
316 | { | |
317 | return type == mst_data | |
318 | || type == mst_bss | |
319 | || type == mst_abs | |
320 | || type == mst_file_data | |
321 | || type == mst_file_bss; | |
322 | } | |
323 | ||
324 | /* See symtab.h. */ | |
325 | ||
326 | bool | |
327 | minimal_symbol::text_p () const | |
328 | { | |
329 | return type == mst_text | |
330 | || type == mst_text_gnu_ifunc | |
331 | || type == mst_data_gnu_ifunc | |
332 | || type == mst_slot_got_plt | |
333 | || type == mst_solib_trampoline | |
334 | || type == mst_file_text; | |
335 | } | |
336 | ||
4aac40c8 TT |
337 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
338 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
339 | describes what we advertise). Returns true if they match, false |
340 | otherwise. */ | |
4aac40c8 TT |
341 | |
342 | int | |
b57a636e | 343 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
344 | { |
345 | int len = strlen (filename); | |
b57a636e | 346 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
347 | |
348 | if (len < search_len) | |
349 | return 0; | |
350 | ||
351 | /* The tail of FILENAME must match. */ | |
352 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
353 | return 0; | |
354 | ||
355 | /* Either the names must completely match, or the character | |
356 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
357 | directory separator. |
358 | ||
af529f8f JK |
359 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
360 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
361 | absolute path. The sama applies for "c:\file.c" possibly | |
362 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
363 | ||
d84fca2c JK |
364 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
365 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
366 | to put the "c:file.c" name into debug info. Such compatibility | |
367 | works only on GDB built for DOS host. */ | |
4aac40c8 | 368 | return (len == search_len |
af529f8f JK |
369 | || (!IS_ABSOLUTE_PATH (search_name) |
370 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
371 | || (HAS_DRIVE_SPEC (filename) |
372 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
373 | } | |
374 | ||
cce0e923 DE |
375 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
376 | Heads up on the order of the arguments. They match the order of | |
377 | compare_filenames_for_search, but it's the opposite of the order of | |
378 | arguments to gdb_filename_fnmatch. */ | |
379 | ||
380 | int | |
381 | compare_glob_filenames_for_search (const char *filename, | |
382 | const char *search_name) | |
383 | { | |
384 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
385 | all /s have to be explicitly specified. */ | |
386 | int file_path_elements = count_path_elements (filename); | |
387 | int search_path_elements = count_path_elements (search_name); | |
388 | ||
389 | if (search_path_elements > file_path_elements) | |
390 | return 0; | |
391 | ||
392 | if (IS_ABSOLUTE_PATH (search_name)) | |
393 | { | |
394 | return (search_path_elements == file_path_elements | |
395 | && gdb_filename_fnmatch (search_name, filename, | |
396 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
397 | } | |
398 | ||
399 | { | |
400 | const char *file_to_compare | |
401 | = strip_leading_path_elements (filename, | |
402 | file_path_elements - search_path_elements); | |
403 | ||
404 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
405 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
406 | } | |
407 | } | |
408 | ||
f8eba3c6 TT |
409 | /* Check for a symtab of a specific name by searching some symtabs. |
410 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 411 | |
b2d23133 DE |
412 | If NAME is not absolute, then REAL_PATH is NULL |
413 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
414 | ||
14bc53a8 PA |
415 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
416 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 417 | |
43f3e411 DE |
418 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
419 | Each symtab within the specified compunit symtab is also searched. | |
420 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
421 | search until the end of the list. */ |
422 | ||
14bc53a8 | 423 | bool |
f8eba3c6 | 424 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 425 | const char *real_path, |
43f3e411 | 426 | struct compunit_symtab *first, |
14bc53a8 PA |
427 | struct compunit_symtab *after_last, |
428 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 429 | { |
43f3e411 | 430 | struct compunit_symtab *cust; |
c011a4f4 | 431 | const char* base_name = lbasename (name); |
1f84b619 | 432 | |
43f3e411 | 433 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 434 | { |
5accd1a0 | 435 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 436 | { |
43f3e411 DE |
437 | if (compare_filenames_for_search (s->filename, name)) |
438 | { | |
14bc53a8 PA |
439 | if (callback (s)) |
440 | return true; | |
43f3e411 DE |
441 | continue; |
442 | } | |
a94e8645 | 443 | |
43f3e411 DE |
444 | /* Before we invoke realpath, which can get expensive when many |
445 | files are involved, do a quick comparison of the basenames. */ | |
446 | if (! basenames_may_differ | |
447 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
448 | continue; | |
a94e8645 | 449 | |
43f3e411 | 450 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 451 | { |
14bc53a8 PA |
452 | if (callback (s)) |
453 | return true; | |
a94e8645 DE |
454 | continue; |
455 | } | |
43f3e411 DE |
456 | |
457 | /* If the user gave us an absolute path, try to find the file in | |
458 | this symtab and use its absolute path. */ | |
459 | if (real_path != NULL) | |
460 | { | |
461 | const char *fullname = symtab_to_fullname (s); | |
462 | ||
463 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
464 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
465 | if (FILENAME_CMP (real_path, fullname) == 0) | |
466 | { | |
14bc53a8 PA |
467 | if (callback (s)) |
468 | return true; | |
43f3e411 DE |
469 | continue; |
470 | } | |
471 | } | |
a94e8645 | 472 | } |
f8eba3c6 | 473 | } |
58d370e0 | 474 | |
14bc53a8 | 475 | return false; |
f8eba3c6 TT |
476 | } |
477 | ||
478 | /* Check for a symtab of a specific name; first in symtabs, then in | |
479 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
480 | in the symtab filename will also work. | |
481 | ||
14bc53a8 PA |
482 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
483 | true, the search stops. */ | |
f8eba3c6 TT |
484 | |
485 | void | |
486 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 487 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 488 | { |
14bc53a8 | 489 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
490 | |
491 | /* Here we are interested in canonicalizing an absolute path, not | |
492 | absolutizing a relative path. */ | |
493 | if (IS_ABSOLUTE_PATH (name)) | |
494 | { | |
14278e1f | 495 | real_path = gdb_realpath (name); |
14bc53a8 | 496 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
497 | } |
498 | ||
2030c079 | 499 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
500 | { |
501 | if (iterate_over_some_symtabs (name, real_path.get (), | |
502 | objfile->compunit_symtabs, NULL, | |
503 | callback)) | |
f8eba3c6 | 504 | return; |
14bc53a8 | 505 | } |
f8eba3c6 | 506 | |
c906108c SS |
507 | /* Same search rules as above apply here, but now we look thru the |
508 | psymtabs. */ | |
509 | ||
2030c079 | 510 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
511 | { |
512 | if (objfile->sf | |
513 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
514 | name, | |
515 | real_path.get (), | |
516 | callback)) | |
f8eba3c6 | 517 | return; |
14bc53a8 | 518 | } |
c906108c | 519 | } |
f8eba3c6 TT |
520 | |
521 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
522 | symtab, or NULL. */ | |
523 | ||
524 | struct symtab * | |
525 | lookup_symtab (const char *name) | |
526 | { | |
527 | struct symtab *result = NULL; | |
528 | ||
14bc53a8 PA |
529 | iterate_over_symtabs (name, [&] (symtab *symtab) |
530 | { | |
531 | result = symtab; | |
532 | return true; | |
533 | }); | |
534 | ||
f8eba3c6 TT |
535 | return result; |
536 | } | |
537 | ||
c906108c SS |
538 | \f |
539 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
540 | full method name, which consist of the class name (from T), the unadorned | |
541 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 542 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
543 | |
544 | char * | |
fba45db2 | 545 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
546 | { |
547 | int mangled_name_len; | |
548 | char *mangled_name; | |
549 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
550 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 551 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 552 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 553 | const char *newname = TYPE_NAME (type); |
c906108c SS |
554 | |
555 | /* Does the form of physname indicate that it is the full mangled name | |
556 | of a constructor (not just the args)? */ | |
557 | int is_full_physname_constructor; | |
558 | ||
559 | int is_constructor; | |
015a42b4 | 560 | int is_destructor = is_destructor_name (physname); |
c906108c | 561 | /* Need a new type prefix. */ |
e6a959d6 PA |
562 | const char *const_prefix = method->is_const ? "C" : ""; |
563 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
564 | char buf[20]; |
565 | int len = (newname == NULL ? 0 : strlen (newname)); | |
566 | ||
43630227 PS |
567 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
568 | or an operator name. */ | |
569 | if ((physname[0] == '_' && physname[1] == 'Z') | |
570 | || is_operator_name (field_name)) | |
235d1e03 EZ |
571 | return xstrdup (physname); |
572 | ||
015a42b4 | 573 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 574 | |
3e43a32a MS |
575 | is_constructor = is_full_physname_constructor |
576 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
577 | |
578 | if (!is_destructor) | |
61012eef | 579 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
580 | |
581 | if (is_destructor || is_full_physname_constructor) | |
582 | { | |
c5aa993b JM |
583 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
584 | strcpy (mangled_name, physname); | |
c906108c SS |
585 | return mangled_name; |
586 | } | |
587 | ||
588 | if (len == 0) | |
589 | { | |
8c042590 | 590 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
591 | } |
592 | else if (physname[0] == 't' || physname[0] == 'Q') | |
593 | { | |
594 | /* The physname for template and qualified methods already includes | |
c5aa993b | 595 | the class name. */ |
8c042590 | 596 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
597 | newname = NULL; |
598 | len = 0; | |
599 | } | |
600 | else | |
601 | { | |
8c042590 PM |
602 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
603 | volatile_prefix, len); | |
c906108c SS |
604 | } |
605 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 606 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 607 | |
433759f7 MS |
608 | mangled_name = (char *) xmalloc (mangled_name_len); |
609 | if (is_constructor) | |
610 | mangled_name[0] = '\0'; | |
611 | else | |
612 | strcpy (mangled_name, field_name); | |
613 | ||
c906108c SS |
614 | strcat (mangled_name, buf); |
615 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
616 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 617 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
618 | if (newname != NULL) |
619 | strcat (mangled_name, newname); | |
620 | ||
621 | strcat (mangled_name, physname); | |
622 | return (mangled_name); | |
623 | } | |
12af6855 | 624 | |
b250c185 | 625 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 626 | correctly allocated. */ |
eca864fe | 627 | |
b250c185 SW |
628 | void |
629 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 630 | const char *name, |
ccde22c0 | 631 | struct obstack *obstack) |
b250c185 | 632 | { |
7c5fdd25 | 633 | if (gsymbol->language == language_ada) |
f85f34ed TT |
634 | { |
635 | if (name == NULL) | |
636 | { | |
637 | gsymbol->ada_mangled = 0; | |
638 | gsymbol->language_specific.obstack = obstack; | |
639 | } | |
640 | else | |
641 | { | |
642 | gsymbol->ada_mangled = 1; | |
615b3f62 | 643 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
644 | } |
645 | } | |
29df156d | 646 | else |
615b3f62 | 647 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
648 | } |
649 | ||
650 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 651 | |
0d5cff50 | 652 | const char * |
b250c185 SW |
653 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
654 | { | |
7c5fdd25 | 655 | if (gsymbol->language == language_ada) |
f85f34ed TT |
656 | { |
657 | if (!gsymbol->ada_mangled) | |
658 | return NULL; | |
659 | /* Fall through. */ | |
660 | } | |
661 | ||
615b3f62 | 662 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
663 | } |
664 | ||
12af6855 | 665 | \f |
89aad1f9 | 666 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 667 | depending upon the language for the symbol. */ |
eca864fe | 668 | |
89aad1f9 | 669 | void |
33e5013e | 670 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
671 | enum language language, |
672 | struct obstack *obstack) | |
89aad1f9 EZ |
673 | { |
674 | gsymbol->language = language; | |
7c5fdd25 DE |
675 | if (gsymbol->language == language_cplus |
676 | || gsymbol->language == language_d | |
a766d390 | 677 | || gsymbol->language == language_go |
f55ee35c JK |
678 | || gsymbol->language == language_objc |
679 | || gsymbol->language == language_fortran) | |
89aad1f9 | 680 | { |
f85f34ed TT |
681 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
682 | } | |
683 | else if (gsymbol->language == language_ada) | |
684 | { | |
685 | gdb_assert (gsymbol->ada_mangled == 0); | |
686 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 687 | } |
89aad1f9 EZ |
688 | else |
689 | { | |
690 | memset (&gsymbol->language_specific, 0, | |
691 | sizeof (gsymbol->language_specific)); | |
692 | } | |
693 | } | |
694 | ||
2de7ced7 DJ |
695 | /* Functions to initialize a symbol's mangled name. */ |
696 | ||
04a679b8 TT |
697 | /* Objects of this type are stored in the demangled name hash table. */ |
698 | struct demangled_name_entry | |
699 | { | |
9d2ceabe | 700 | const char *mangled; |
04a679b8 TT |
701 | char demangled[1]; |
702 | }; | |
703 | ||
704 | /* Hash function for the demangled name hash. */ | |
eca864fe | 705 | |
04a679b8 TT |
706 | static hashval_t |
707 | hash_demangled_name_entry (const void *data) | |
708 | { | |
19ba03f4 SM |
709 | const struct demangled_name_entry *e |
710 | = (const struct demangled_name_entry *) data; | |
433759f7 | 711 | |
04a679b8 TT |
712 | return htab_hash_string (e->mangled); |
713 | } | |
714 | ||
715 | /* Equality function for the demangled name hash. */ | |
eca864fe | 716 | |
04a679b8 TT |
717 | static int |
718 | eq_demangled_name_entry (const void *a, const void *b) | |
719 | { | |
19ba03f4 SM |
720 | const struct demangled_name_entry *da |
721 | = (const struct demangled_name_entry *) a; | |
722 | const struct demangled_name_entry *db | |
723 | = (const struct demangled_name_entry *) b; | |
433759f7 | 724 | |
04a679b8 TT |
725 | return strcmp (da->mangled, db->mangled) == 0; |
726 | } | |
727 | ||
2de7ced7 DJ |
728 | /* Create the hash table used for demangled names. Each hash entry is |
729 | a pair of strings; one for the mangled name and one for the demangled | |
730 | name. The entry is hashed via just the mangled name. */ | |
731 | ||
732 | static void | |
0f14768a | 733 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
734 | { |
735 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 736 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
737 | Choosing a much larger table size wastes memory, and saves only about |
738 | 1% in symbol reading. */ | |
739 | ||
db92718b | 740 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
04a679b8 | 741 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
db92718b | 742 | NULL, xcalloc, xfree)); |
2de7ced7 | 743 | } |
12af6855 | 744 | |
2de7ced7 | 745 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
746 | language of that symbol. If the language is set to language_auto, |
747 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
748 | then set the language appropriately. The returned name is allocated |
749 | by the demangler and should be xfree'd. */ | |
12af6855 | 750 | |
2de7ced7 DJ |
751 | static char * |
752 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
753 | const char *mangled) | |
12af6855 | 754 | { |
12af6855 | 755 | char *demangled = NULL; |
8b302db8 | 756 | int i; |
12af6855 JB |
757 | |
758 | if (gsymbol->language == language_unknown) | |
759 | gsymbol->language = language_auto; | |
1bae87b9 | 760 | |
8b302db8 | 761 | if (gsymbol->language != language_auto) |
1bae87b9 | 762 | { |
8b302db8 TT |
763 | const struct language_defn *lang = language_def (gsymbol->language); |
764 | ||
765 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
766 | return demangled; | |
6aecb9c2 | 767 | } |
8b302db8 TT |
768 | |
769 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 770 | { |
8b302db8 TT |
771 | enum language l = (enum language) i; |
772 | const struct language_defn *lang = language_def (l); | |
773 | ||
774 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 775 | { |
8b302db8 | 776 | gsymbol->language = l; |
a766d390 DE |
777 | return demangled; |
778 | } | |
779 | } | |
780 | ||
2de7ced7 DJ |
781 | return NULL; |
782 | } | |
783 | ||
980cae7a | 784 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
785 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
786 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
787 | NUL-terminated, then this function assumes that NAME is already | |
788 | correctly saved (either permanently or with a lifetime tied to the | |
789 | objfile), and it will not be copied. | |
790 | ||
791 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 792 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 793 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
794 | |
795 | void | |
796 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 | 797 | const char *linkage_name, int len, int copy_name, |
1d94a5a3 | 798 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 799 | { |
04a679b8 | 800 | struct demangled_name_entry **slot; |
980cae7a DC |
801 | /* A 0-terminated copy of the linkage name. */ |
802 | const char *linkage_name_copy; | |
04a679b8 | 803 | struct demangled_name_entry entry; |
2de7ced7 | 804 | |
b06ead72 JB |
805 | if (gsymbol->language == language_ada) |
806 | { | |
807 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 808 | we can save some space by not storing the demangled name. */ |
04a679b8 | 809 | if (!copy_name) |
0d5cff50 | 810 | gsymbol->name = linkage_name; |
04a679b8 TT |
811 | else |
812 | { | |
224c3ddb SM |
813 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
814 | len + 1); | |
0d5cff50 DE |
815 | |
816 | memcpy (name, linkage_name, len); | |
817 | name[len] = '\0'; | |
818 | gsymbol->name = name; | |
04a679b8 | 819 | } |
84a1243b | 820 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
821 | |
822 | return; | |
823 | } | |
824 | ||
84a1243b | 825 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 826 | create_demangled_names_hash (per_bfd); |
04a679b8 | 827 | |
9c37b5ae | 828 | if (linkage_name[len] != '\0') |
2de7ced7 | 829 | { |
980cae7a DC |
830 | char *alloc_name; |
831 | ||
9c37b5ae | 832 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 833 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 834 | alloc_name[len] = '\0'; |
980cae7a DC |
835 | |
836 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
837 | } |
838 | else | |
9c37b5ae | 839 | linkage_name_copy = linkage_name; |
2de7ced7 | 840 | |
9325300d TV |
841 | /* Set the symbol language. */ |
842 | char *demangled_name_ptr | |
843 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
844 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
845 | ||
9c37b5ae | 846 | entry.mangled = linkage_name_copy; |
04a679b8 | 847 | slot = ((struct demangled_name_entry **) |
db92718b | 848 | htab_find_slot (per_bfd->demangled_names_hash.get (), |
04a679b8 | 849 | &entry, INSERT)); |
2de7ced7 DJ |
850 | |
851 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
852 | if (*slot == NULL |
853 | /* A C version of the symbol may have already snuck into the table. | |
854 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
855 | || (gsymbol->language == language_go | |
856 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 857 | { |
9325300d | 858 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 859 | |
04a679b8 | 860 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 861 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
862 | mangled name saved, and we don't have a demangled name. So, |
863 | you might think we could save a little space by not recording | |
864 | this in the hash table at all. | |
865 | ||
866 | It turns out that it is actually important to still save such | |
867 | an entry in the hash table, because storing this name gives | |
705b5767 | 868 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 869 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 870 | { |
224c3ddb SM |
871 | *slot |
872 | = ((struct demangled_name_entry *) | |
873 | obstack_alloc (&per_bfd->storage_obstack, | |
874 | offsetof (struct demangled_name_entry, demangled) | |
875 | + demangled_len + 1)); | |
9c37b5ae | 876 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
877 | } |
878 | else | |
879 | { | |
9d2ceabe TT |
880 | char *mangled_ptr; |
881 | ||
04a679b8 TT |
882 | /* If we must copy the mangled name, put it directly after |
883 | the demangled name so we can have a single | |
884 | allocation. */ | |
224c3ddb SM |
885 | *slot |
886 | = ((struct demangled_name_entry *) | |
887 | obstack_alloc (&per_bfd->storage_obstack, | |
888 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 889 | + len + demangled_len + 2)); |
9d2ceabe | 890 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 891 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 892 | (*slot)->mangled = mangled_ptr; |
04a679b8 TT |
893 | } |
894 | ||
980cae7a | 895 | if (demangled_name != NULL) |
9325300d | 896 | strcpy ((*slot)->demangled, demangled_name.get()); |
2de7ced7 | 897 | else |
04a679b8 | 898 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
899 | } |
900 | ||
9c37b5ae | 901 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 902 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 903 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 904 | &per_bfd->storage_obstack); |
2de7ced7 | 905 | else |
84a1243b | 906 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
907 | } |
908 | ||
22abf04a DC |
909 | /* Return the source code name of a symbol. In languages where |
910 | demangling is necessary, this is the demangled name. */ | |
911 | ||
0d5cff50 | 912 | const char * |
22abf04a DC |
913 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
914 | { | |
9af17804 | 915 | switch (gsymbol->language) |
22abf04a | 916 | { |
1f8173e6 | 917 | case language_cplus: |
6aecb9c2 | 918 | case language_d: |
a766d390 | 919 | case language_go: |
1f8173e6 | 920 | case language_objc: |
f55ee35c | 921 | case language_fortran: |
b250c185 SW |
922 | if (symbol_get_demangled_name (gsymbol) != NULL) |
923 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
924 | break; |
925 | case language_ada: | |
f85f34ed | 926 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
927 | default: |
928 | break; | |
22abf04a | 929 | } |
1f8173e6 | 930 | return gsymbol->name; |
22abf04a DC |
931 | } |
932 | ||
9cc0d196 | 933 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 934 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 935 | |
0d5cff50 | 936 | const char * |
df8a16a1 | 937 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 938 | { |
c6e5ee5e SDJ |
939 | const char *dem_name = NULL; |
940 | ||
9af17804 | 941 | switch (gsymbol->language) |
1f8173e6 PH |
942 | { |
943 | case language_cplus: | |
6aecb9c2 | 944 | case language_d: |
a766d390 | 945 | case language_go: |
1f8173e6 | 946 | case language_objc: |
f55ee35c | 947 | case language_fortran: |
c6e5ee5e | 948 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
949 | break; |
950 | case language_ada: | |
f85f34ed | 951 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
952 | break; |
953 | default: | |
954 | break; | |
955 | } | |
c6e5ee5e | 956 | return dem_name; |
9cc0d196 | 957 | } |
fe39c653 | 958 | |
4725b721 PH |
959 | /* Return the search name of a symbol---generally the demangled or |
960 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 961 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 962 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 963 | |
0d5cff50 | 964 | const char * |
fc062ac6 JB |
965 | symbol_search_name (const struct general_symbol_info *gsymbol) |
966 | { | |
1f8173e6 PH |
967 | if (gsymbol->language == language_ada) |
968 | return gsymbol->name; | |
969 | else | |
970 | return symbol_natural_name (gsymbol); | |
4725b721 | 971 | } |
b5ec771e PA |
972 | |
973 | /* See symtab.h. */ | |
974 | ||
975 | bool | |
976 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
977 | const lookup_name_info &name) | |
978 | { | |
979 | symbol_name_matcher_ftype *name_match | |
618daa93 | 980 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
981 | return name_match (symbol_search_name (gsymbol), name, NULL); |
982 | } | |
983 | ||
c906108c SS |
984 | \f |
985 | ||
94277a38 DJ |
986 | /* Return 1 if the two sections are the same, or if they could |
987 | plausibly be copies of each other, one in an original object | |
988 | file and another in a separated debug file. */ | |
989 | ||
990 | int | |
714835d5 UW |
991 | matching_obj_sections (struct obj_section *obj_first, |
992 | struct obj_section *obj_second) | |
94277a38 | 993 | { |
714835d5 UW |
994 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
995 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
996 | |
997 | /* If they're the same section, then they match. */ | |
998 | if (first == second) | |
999 | return 1; | |
1000 | ||
1001 | /* If either is NULL, give up. */ | |
1002 | if (first == NULL || second == NULL) | |
1003 | return 0; | |
1004 | ||
1005 | /* This doesn't apply to absolute symbols. */ | |
1006 | if (first->owner == NULL || second->owner == NULL) | |
1007 | return 0; | |
1008 | ||
1009 | /* If they're in the same object file, they must be different sections. */ | |
1010 | if (first->owner == second->owner) | |
1011 | return 0; | |
1012 | ||
1013 | /* Check whether the two sections are potentially corresponding. They must | |
1014 | have the same size, address, and name. We can't compare section indexes, | |
1015 | which would be more reliable, because some sections may have been | |
1016 | stripped. */ | |
1017 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
1018 | return 0; | |
1019 | ||
818f79f6 | 1020 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 1021 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
1022 | - bfd_get_start_address (first->owner) |
1023 | != bfd_get_section_vma (second->owner, second) | |
1024 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1025 | return 0; |
1026 | ||
1027 | if (bfd_get_section_name (first->owner, first) == NULL | |
1028 | || bfd_get_section_name (second->owner, second) == NULL | |
1029 | || strcmp (bfd_get_section_name (first->owner, first), | |
1030 | bfd_get_section_name (second->owner, second)) != 0) | |
1031 | return 0; | |
1032 | ||
1033 | /* Otherwise check that they are in corresponding objfiles. */ | |
1034 | ||
9d7c67bf | 1035 | struct objfile *obj = NULL; |
2030c079 | 1036 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1037 | if (objfile->obfd == first->owner) |
1038 | { | |
1039 | obj = objfile; | |
1040 | break; | |
1041 | } | |
94277a38 DJ |
1042 | gdb_assert (obj != NULL); |
1043 | ||
1044 | if (obj->separate_debug_objfile != NULL | |
1045 | && obj->separate_debug_objfile->obfd == second->owner) | |
1046 | return 1; | |
1047 | if (obj->separate_debug_objfile_backlink != NULL | |
1048 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1049 | return 1; | |
1050 | ||
1051 | return 0; | |
1052 | } | |
c5aa993b | 1053 | |
2097ae25 DE |
1054 | /* See symtab.h. */ |
1055 | ||
1056 | void | |
1057 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1058 | { |
77e371c0 | 1059 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1060 | |
1061 | /* If we know that this is not a text address, return failure. This is | |
1062 | necessary because we loop based on texthigh and textlow, which do | |
1063 | not include the data ranges. */ | |
77e371c0 | 1064 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1065 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1066 | return; |
c906108c | 1067 | |
2030c079 | 1068 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1069 | { |
1070 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1071 | |
aed57c53 TT |
1072 | if (objfile->sf) |
1073 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1074 | pc, section, 0); | |
1075 | if (cust) | |
1076 | return; | |
1077 | } | |
c906108c | 1078 | } |
c906108c | 1079 | \f |
f57d2163 DE |
1080 | /* Hash function for the symbol cache. */ |
1081 | ||
1082 | static unsigned int | |
1083 | hash_symbol_entry (const struct objfile *objfile_context, | |
1084 | const char *name, domain_enum domain) | |
1085 | { | |
1086 | unsigned int hash = (uintptr_t) objfile_context; | |
1087 | ||
1088 | if (name != NULL) | |
1089 | hash += htab_hash_string (name); | |
1090 | ||
2c26b84f DE |
1091 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1092 | to map to the same slot. */ | |
1093 | if (domain == STRUCT_DOMAIN) | |
1094 | hash += VAR_DOMAIN * 7; | |
1095 | else | |
1096 | hash += domain * 7; | |
f57d2163 DE |
1097 | |
1098 | return hash; | |
1099 | } | |
1100 | ||
1101 | /* Equality function for the symbol cache. */ | |
1102 | ||
1103 | static int | |
1104 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1105 | const struct objfile *objfile_context, | |
1106 | const char *name, domain_enum domain) | |
1107 | { | |
1108 | const char *slot_name; | |
1109 | domain_enum slot_domain; | |
1110 | ||
1111 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1112 | return 0; | |
1113 | ||
1114 | if (slot->objfile_context != objfile_context) | |
1115 | return 0; | |
1116 | ||
1117 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1118 | { | |
1119 | slot_name = slot->value.not_found.name; | |
1120 | slot_domain = slot->value.not_found.domain; | |
1121 | } | |
1122 | else | |
1123 | { | |
d12307c1 PMR |
1124 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1125 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1126 | } |
1127 | ||
1128 | /* NULL names match. */ | |
1129 | if (slot_name == NULL && name == NULL) | |
1130 | { | |
1131 | /* But there's no point in calling symbol_matches_domain in the | |
1132 | SYMBOL_SLOT_FOUND case. */ | |
1133 | if (slot_domain != domain) | |
1134 | return 0; | |
1135 | } | |
1136 | else if (slot_name != NULL && name != NULL) | |
1137 | { | |
b5ec771e PA |
1138 | /* It's important that we use the same comparison that was done |
1139 | the first time through. If the slot records a found symbol, | |
1140 | then this means using the symbol name comparison function of | |
1141 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1142 | dictionary.c. It also means using symbol_matches_domain for | |
1143 | found symbols. See block.c. | |
f57d2163 DE |
1144 | |
1145 | If the slot records a not-found symbol, then require a precise match. | |
1146 | We could still be lax with whitespace like strcmp_iw though. */ | |
1147 | ||
1148 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1149 | { | |
1150 | if (strcmp (slot_name, name) != 0) | |
1151 | return 0; | |
1152 | if (slot_domain != domain) | |
1153 | return 0; | |
1154 | } | |
1155 | else | |
1156 | { | |
d12307c1 | 1157 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1158 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1159 | |
b5ec771e | 1160 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1161 | return 0; |
b5ec771e | 1162 | |
f57d2163 DE |
1163 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1164 | slot_domain, domain)) | |
1165 | return 0; | |
1166 | } | |
1167 | } | |
1168 | else | |
1169 | { | |
1170 | /* Only one name is NULL. */ | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | return 1; | |
1175 | } | |
1176 | ||
1177 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1178 | length array) in bytes. */ | |
1179 | ||
1180 | static size_t | |
1181 | symbol_cache_byte_size (unsigned int size) | |
1182 | { | |
1183 | return (sizeof (struct block_symbol_cache) | |
1184 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1185 | } | |
1186 | ||
1187 | /* Resize CACHE. */ | |
1188 | ||
1189 | static void | |
1190 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1191 | { | |
1192 | /* If there's no change in size, don't do anything. | |
1193 | All caches have the same size, so we can just compare with the size | |
1194 | of the global symbols cache. */ | |
1195 | if ((cache->global_symbols != NULL | |
1196 | && cache->global_symbols->size == new_size) | |
1197 | || (cache->global_symbols == NULL | |
1198 | && new_size == 0)) | |
1199 | return; | |
1200 | ||
1201 | xfree (cache->global_symbols); | |
1202 | xfree (cache->static_symbols); | |
1203 | ||
1204 | if (new_size == 0) | |
1205 | { | |
1206 | cache->global_symbols = NULL; | |
1207 | cache->static_symbols = NULL; | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | size_t total_size = symbol_cache_byte_size (new_size); | |
1212 | ||
224c3ddb SM |
1213 | cache->global_symbols |
1214 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1215 | cache->static_symbols | |
1216 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1217 | cache->global_symbols->size = new_size; |
1218 | cache->static_symbols->size = new_size; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | /* Make a symbol cache of size SIZE. */ | |
1223 | ||
1224 | static struct symbol_cache * | |
1225 | make_symbol_cache (unsigned int size) | |
1226 | { | |
1227 | struct symbol_cache *cache; | |
1228 | ||
1229 | cache = XCNEW (struct symbol_cache); | |
1230 | resize_symbol_cache (cache, symbol_cache_size); | |
1231 | return cache; | |
1232 | } | |
1233 | ||
1234 | /* Free the space used by CACHE. */ | |
1235 | ||
1236 | static void | |
1237 | free_symbol_cache (struct symbol_cache *cache) | |
1238 | { | |
1239 | xfree (cache->global_symbols); | |
1240 | xfree (cache->static_symbols); | |
1241 | xfree (cache); | |
1242 | } | |
1243 | ||
1244 | /* Return the symbol cache of PSPACE. | |
1245 | Create one if it doesn't exist yet. */ | |
1246 | ||
1247 | static struct symbol_cache * | |
1248 | get_symbol_cache (struct program_space *pspace) | |
1249 | { | |
19ba03f4 SM |
1250 | struct symbol_cache *cache |
1251 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1252 | |
1253 | if (cache == NULL) | |
1254 | { | |
1255 | cache = make_symbol_cache (symbol_cache_size); | |
1256 | set_program_space_data (pspace, symbol_cache_key, cache); | |
1257 | } | |
1258 | ||
1259 | return cache; | |
1260 | } | |
1261 | ||
1262 | /* Delete the symbol cache of PSPACE. | |
1263 | Called when PSPACE is destroyed. */ | |
1264 | ||
1265 | static void | |
1266 | symbol_cache_cleanup (struct program_space *pspace, void *data) | |
1267 | { | |
19ba03f4 | 1268 | struct symbol_cache *cache = (struct symbol_cache *) data; |
f57d2163 DE |
1269 | |
1270 | free_symbol_cache (cache); | |
1271 | } | |
1272 | ||
1273 | /* Set the size of the symbol cache in all program spaces. */ | |
1274 | ||
1275 | static void | |
1276 | set_symbol_cache_size (unsigned int new_size) | |
1277 | { | |
1278 | struct program_space *pspace; | |
1279 | ||
1280 | ALL_PSPACES (pspace) | |
1281 | { | |
1282 | struct symbol_cache *cache | |
19ba03f4 | 1283 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); |
f57d2163 DE |
1284 | |
1285 | /* The pspace could have been created but not have a cache yet. */ | |
1286 | if (cache != NULL) | |
1287 | resize_symbol_cache (cache, new_size); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* Called when symbol-cache-size is set. */ | |
1292 | ||
1293 | static void | |
eb4c3f4a | 1294 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1295 | struct cmd_list_element *c) |
1296 | { | |
1297 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1298 | { | |
1299 | /* Restore the previous value. | |
1300 | This is the value the "show" command prints. */ | |
1301 | new_symbol_cache_size = symbol_cache_size; | |
1302 | ||
1303 | error (_("Symbol cache size is too large, max is %u."), | |
1304 | MAX_SYMBOL_CACHE_SIZE); | |
1305 | } | |
1306 | symbol_cache_size = new_symbol_cache_size; | |
1307 | ||
1308 | set_symbol_cache_size (symbol_cache_size); | |
1309 | } | |
1310 | ||
1311 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1312 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1313 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1314 | failed (and thus this one will too), or NULL if the symbol is not present | |
1315 | in the cache. | |
2c26b84f DE |
1316 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1317 | set to the cache and slot of the symbol to save the result of a full lookup | |
1318 | attempt. */ | |
f57d2163 | 1319 | |
d12307c1 | 1320 | static struct block_symbol |
f57d2163 DE |
1321 | symbol_cache_lookup (struct symbol_cache *cache, |
1322 | struct objfile *objfile_context, int block, | |
1323 | const char *name, domain_enum domain, | |
1324 | struct block_symbol_cache **bsc_ptr, | |
1325 | struct symbol_cache_slot **slot_ptr) | |
1326 | { | |
1327 | struct block_symbol_cache *bsc; | |
1328 | unsigned int hash; | |
1329 | struct symbol_cache_slot *slot; | |
1330 | ||
1331 | if (block == GLOBAL_BLOCK) | |
1332 | bsc = cache->global_symbols; | |
1333 | else | |
1334 | bsc = cache->static_symbols; | |
1335 | if (bsc == NULL) | |
1336 | { | |
1337 | *bsc_ptr = NULL; | |
1338 | *slot_ptr = NULL; | |
6640a367 | 1339 | return {}; |
f57d2163 DE |
1340 | } |
1341 | ||
1342 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1343 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1344 | |
1345 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1346 | { | |
1347 | if (symbol_lookup_debug) | |
1348 | fprintf_unfiltered (gdb_stdlog, | |
1349 | "%s block symbol cache hit%s for %s, %s\n", | |
1350 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1351 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1352 | ? " (not found)" : "", | |
1353 | name, domain_name (domain)); | |
1354 | ++bsc->hits; | |
1355 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1356 | return SYMBOL_LOOKUP_FAILED; | |
1357 | return slot->value.found; | |
1358 | } | |
1359 | ||
2c26b84f DE |
1360 | /* Symbol is not present in the cache. */ |
1361 | ||
1362 | *bsc_ptr = bsc; | |
1363 | *slot_ptr = slot; | |
1364 | ||
f57d2163 DE |
1365 | if (symbol_lookup_debug) |
1366 | { | |
1367 | fprintf_unfiltered (gdb_stdlog, | |
1368 | "%s block symbol cache miss for %s, %s\n", | |
1369 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1370 | name, domain_name (domain)); | |
1371 | } | |
1372 | ++bsc->misses; | |
6640a367 | 1373 | return {}; |
f57d2163 DE |
1374 | } |
1375 | ||
1376 | /* Clear out SLOT. */ | |
1377 | ||
1378 | static void | |
1379 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1380 | { | |
1381 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1382 | xfree (slot->value.not_found.name); | |
1383 | slot->state = SYMBOL_SLOT_UNUSED; | |
1384 | } | |
1385 | ||
1386 | /* Mark SYMBOL as found in SLOT. | |
1387 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1388 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1389 | necessarily the objfile the symbol was found in. */ | |
1390 | ||
1391 | static void | |
1392 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1393 | struct symbol_cache_slot *slot, | |
1394 | struct objfile *objfile_context, | |
d12307c1 PMR |
1395 | struct symbol *symbol, |
1396 | const struct block *block) | |
f57d2163 DE |
1397 | { |
1398 | if (bsc == NULL) | |
1399 | return; | |
1400 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1401 | { | |
1402 | ++bsc->collisions; | |
1403 | symbol_cache_clear_slot (slot); | |
1404 | } | |
1405 | slot->state = SYMBOL_SLOT_FOUND; | |
1406 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1407 | slot->value.found.symbol = symbol; |
1408 | slot->value.found.block = block; | |
f57d2163 DE |
1409 | } |
1410 | ||
1411 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1412 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1413 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1414 | ||
1415 | static void | |
1416 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1417 | struct symbol_cache_slot *slot, | |
1418 | struct objfile *objfile_context, | |
1419 | const char *name, domain_enum domain) | |
1420 | { | |
1421 | if (bsc == NULL) | |
1422 | return; | |
1423 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1424 | { | |
1425 | ++bsc->collisions; | |
1426 | symbol_cache_clear_slot (slot); | |
1427 | } | |
1428 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1429 | slot->objfile_context = objfile_context; | |
1430 | slot->value.not_found.name = xstrdup (name); | |
1431 | slot->value.not_found.domain = domain; | |
1432 | } | |
1433 | ||
1434 | /* Flush the symbol cache of PSPACE. */ | |
1435 | ||
1436 | static void | |
1437 | symbol_cache_flush (struct program_space *pspace) | |
1438 | { | |
19ba03f4 SM |
1439 | struct symbol_cache *cache |
1440 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 | 1441 | int pass; |
f57d2163 DE |
1442 | |
1443 | if (cache == NULL) | |
1444 | return; | |
1445 | if (cache->global_symbols == NULL) | |
1446 | { | |
1447 | gdb_assert (symbol_cache_size == 0); | |
1448 | gdb_assert (cache->static_symbols == NULL); | |
1449 | return; | |
1450 | } | |
1451 | ||
1452 | /* If the cache is untouched since the last flush, early exit. | |
1453 | This is important for performance during the startup of a program linked | |
1454 | with 100s (or 1000s) of shared libraries. */ | |
1455 | if (cache->global_symbols->misses == 0 | |
1456 | && cache->static_symbols->misses == 0) | |
1457 | return; | |
1458 | ||
1459 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1460 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1461 | ||
1462 | for (pass = 0; pass < 2; ++pass) | |
1463 | { | |
1464 | struct block_symbol_cache *bsc | |
1465 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1466 | unsigned int i; | |
1467 | ||
1468 | for (i = 0; i < bsc->size; ++i) | |
1469 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1470 | } | |
1471 | ||
1472 | cache->global_symbols->hits = 0; | |
1473 | cache->global_symbols->misses = 0; | |
1474 | cache->global_symbols->collisions = 0; | |
1475 | cache->static_symbols->hits = 0; | |
1476 | cache->static_symbols->misses = 0; | |
1477 | cache->static_symbols->collisions = 0; | |
1478 | } | |
1479 | ||
1480 | /* Dump CACHE. */ | |
1481 | ||
1482 | static void | |
1483 | symbol_cache_dump (const struct symbol_cache *cache) | |
1484 | { | |
1485 | int pass; | |
1486 | ||
1487 | if (cache->global_symbols == NULL) | |
1488 | { | |
1489 | printf_filtered (" <disabled>\n"); | |
1490 | return; | |
1491 | } | |
1492 | ||
1493 | for (pass = 0; pass < 2; ++pass) | |
1494 | { | |
1495 | const struct block_symbol_cache *bsc | |
1496 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1497 | unsigned int i; | |
1498 | ||
1499 | if (pass == 0) | |
1500 | printf_filtered ("Global symbols:\n"); | |
1501 | else | |
1502 | printf_filtered ("Static symbols:\n"); | |
1503 | ||
1504 | for (i = 0; i < bsc->size; ++i) | |
1505 | { | |
1506 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1507 | ||
1508 | QUIT; | |
1509 | ||
1510 | switch (slot->state) | |
1511 | { | |
1512 | case SYMBOL_SLOT_UNUSED: | |
1513 | break; | |
1514 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1515 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1516 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1517 | slot->value.not_found.name, |
1518 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1519 | break; |
1520 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1521 | { |
1522 | struct symbol *found = slot->value.found.symbol; | |
1523 | const struct objfile *context = slot->objfile_context; | |
1524 | ||
1525 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1526 | host_address_to_string (context), | |
1527 | SYMBOL_PRINT_NAME (found), | |
1528 | domain_name (SYMBOL_DOMAIN (found))); | |
1529 | break; | |
1530 | } | |
f57d2163 DE |
1531 | } |
1532 | } | |
1533 | } | |
1534 | } | |
1535 | ||
1536 | /* The "mt print symbol-cache" command. */ | |
1537 | ||
1538 | static void | |
510e5e56 | 1539 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1540 | { |
1541 | struct program_space *pspace; | |
1542 | ||
1543 | ALL_PSPACES (pspace) | |
1544 | { | |
1545 | struct symbol_cache *cache; | |
1546 | ||
1547 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1548 | pspace->num, | |
1549 | pspace->symfile_object_file != NULL | |
1550 | ? objfile_name (pspace->symfile_object_file) | |
1551 | : "(no object file)"); | |
1552 | ||
1553 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1554 | cache |
1555 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1556 | if (cache == NULL) |
1557 | printf_filtered (" <empty>\n"); | |
1558 | else | |
1559 | symbol_cache_dump (cache); | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | /* The "mt flush-symbol-cache" command. */ | |
1564 | ||
1565 | static void | |
510e5e56 | 1566 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1567 | { |
1568 | struct program_space *pspace; | |
1569 | ||
1570 | ALL_PSPACES (pspace) | |
1571 | { | |
1572 | symbol_cache_flush (pspace); | |
1573 | } | |
1574 | } | |
1575 | ||
1576 | /* Print usage statistics of CACHE. */ | |
1577 | ||
1578 | static void | |
1579 | symbol_cache_stats (struct symbol_cache *cache) | |
1580 | { | |
1581 | int pass; | |
1582 | ||
1583 | if (cache->global_symbols == NULL) | |
1584 | { | |
1585 | printf_filtered (" <disabled>\n"); | |
1586 | return; | |
1587 | } | |
1588 | ||
1589 | for (pass = 0; pass < 2; ++pass) | |
1590 | { | |
1591 | const struct block_symbol_cache *bsc | |
1592 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1593 | ||
1594 | QUIT; | |
1595 | ||
1596 | if (pass == 0) | |
1597 | printf_filtered ("Global block cache stats:\n"); | |
1598 | else | |
1599 | printf_filtered ("Static block cache stats:\n"); | |
1600 | ||
1601 | printf_filtered (" size: %u\n", bsc->size); | |
1602 | printf_filtered (" hits: %u\n", bsc->hits); | |
1603 | printf_filtered (" misses: %u\n", bsc->misses); | |
1604 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1605 | } | |
1606 | } | |
1607 | ||
1608 | /* The "mt print symbol-cache-statistics" command. */ | |
1609 | ||
1610 | static void | |
510e5e56 | 1611 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1612 | { |
1613 | struct program_space *pspace; | |
1614 | ||
1615 | ALL_PSPACES (pspace) | |
1616 | { | |
1617 | struct symbol_cache *cache; | |
1618 | ||
1619 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1620 | pspace->num, | |
1621 | pspace->symfile_object_file != NULL | |
1622 | ? objfile_name (pspace->symfile_object_file) | |
1623 | : "(no object file)"); | |
1624 | ||
1625 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1626 | cache |
1627 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1628 | if (cache == NULL) |
1629 | printf_filtered (" empty, no stats available\n"); | |
1630 | else | |
1631 | symbol_cache_stats (cache); | |
1632 | } | |
1633 | } | |
1634 | ||
1635 | /* This module's 'new_objfile' observer. */ | |
1636 | ||
1637 | static void | |
1638 | symtab_new_objfile_observer (struct objfile *objfile) | |
1639 | { | |
1640 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1641 | symbol_cache_flush (current_program_space); | |
1642 | } | |
1643 | ||
1644 | /* This module's 'free_objfile' observer. */ | |
1645 | ||
1646 | static void | |
1647 | symtab_free_objfile_observer (struct objfile *objfile) | |
1648 | { | |
1649 | symbol_cache_flush (objfile->pspace); | |
1650 | } | |
1651 | \f | |
c906108c SS |
1652 | /* Debug symbols usually don't have section information. We need to dig that |
1653 | out of the minimal symbols and stash that in the debug symbol. */ | |
1654 | ||
ccefe4c4 | 1655 | void |
907fc202 UW |
1656 | fixup_section (struct general_symbol_info *ginfo, |
1657 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1658 | { |
1659 | struct minimal_symbol *msym; | |
c906108c | 1660 | |
bccdca4a UW |
1661 | /* First, check whether a minimal symbol with the same name exists |
1662 | and points to the same address. The address check is required | |
1663 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1664 | point to the function descriptor, while the debug symbol will | |
1665 | point to the actual function code. */ | |
907fc202 UW |
1666 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1667 | if (msym) | |
efd66ac6 | 1668 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1669 | else |
19e2d14b KB |
1670 | { |
1671 | /* Static, function-local variables do appear in the linker | |
1672 | (minimal) symbols, but are frequently given names that won't | |
1673 | be found via lookup_minimal_symbol(). E.g., it has been | |
1674 | observed in frv-uclinux (ELF) executables that a static, | |
1675 | function-local variable named "foo" might appear in the | |
1676 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1677 | point in attempting to extend the lookup-by-name mechanism to | |
1678 | handle this case due to the fact that there can be multiple | |
1679 | names. | |
9af17804 | 1680 | |
19e2d14b KB |
1681 | So, instead, search the section table when lookup by name has |
1682 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1683 | been relocated. If so, the relocation offset (i.e. the | |
1684 | ANOFFSET value) needs to be subtracted from these values when | |
1685 | performing the comparison. We unconditionally subtract it, | |
1686 | because, when no relocation has been performed, the ANOFFSET | |
1687 | value will simply be zero. | |
9af17804 | 1688 | |
19e2d14b KB |
1689 | The address of the symbol whose section we're fixing up HAS |
1690 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1691 | the section isn't yet known and knowing the section is | |
1692 | necessary in order to add the correct relocation value. In | |
1693 | other words, we wouldn't even be in this function (attempting | |
1694 | to compute the section) if it were already known. | |
1695 | ||
1696 | Note that it is possible to search the minimal symbols | |
1697 | (subtracting the relocation value if necessary) to find the | |
1698 | matching minimal symbol, but this is overkill and much less | |
1699 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1700 | symbol, only its section. |
1701 | ||
19e2d14b KB |
1702 | Note that this technique (of doing a section table search) |
1703 | can fail when unrelocated section addresses overlap. For | |
1704 | this reason, we still attempt a lookup by name prior to doing | |
1705 | a search of the section table. */ | |
9af17804 | 1706 | |
19e2d14b | 1707 | struct obj_section *s; |
e27d198c | 1708 | int fallback = -1; |
433759f7 | 1709 | |
19e2d14b KB |
1710 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1711 | { | |
65cf3563 | 1712 | int idx = s - objfile->sections; |
19e2d14b KB |
1713 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1714 | ||
e27d198c TT |
1715 | if (fallback == -1) |
1716 | fallback = idx; | |
1717 | ||
f1f6aadf PA |
1718 | if (obj_section_addr (s) - offset <= addr |
1719 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1720 | { |
19e2d14b KB |
1721 | ginfo->section = idx; |
1722 | return; | |
1723 | } | |
1724 | } | |
e27d198c TT |
1725 | |
1726 | /* If we didn't find the section, assume it is in the first | |
1727 | section. If there is no allocated section, then it hardly | |
1728 | matters what we pick, so just pick zero. */ | |
1729 | if (fallback == -1) | |
1730 | ginfo->section = 0; | |
1731 | else | |
1732 | ginfo->section = fallback; | |
19e2d14b | 1733 | } |
c906108c SS |
1734 | } |
1735 | ||
1736 | struct symbol * | |
fba45db2 | 1737 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1738 | { |
907fc202 UW |
1739 | CORE_ADDR addr; |
1740 | ||
c906108c SS |
1741 | if (!sym) |
1742 | return NULL; | |
1743 | ||
1994afbf DE |
1744 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1745 | return sym; | |
1746 | ||
907fc202 UW |
1747 | /* We either have an OBJFILE, or we can get at it from the sym's |
1748 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1749 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1750 | |
1751 | if (objfile == NULL) | |
08be3fe3 | 1752 | objfile = symbol_objfile (sym); |
907fc202 | 1753 | |
e27d198c TT |
1754 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1755 | return sym; | |
1756 | ||
907fc202 UW |
1757 | /* We should have an objfile by now. */ |
1758 | gdb_assert (objfile); | |
1759 | ||
1760 | switch (SYMBOL_CLASS (sym)) | |
1761 | { | |
1762 | case LOC_STATIC: | |
1763 | case LOC_LABEL: | |
907fc202 UW |
1764 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1765 | break; | |
1766 | case LOC_BLOCK: | |
2b1ffcfd | 1767 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1768 | break; |
1769 | ||
1770 | default: | |
1771 | /* Nothing else will be listed in the minsyms -- no use looking | |
1772 | it up. */ | |
1773 | return sym; | |
1774 | } | |
1775 | ||
1776 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1777 | |
1778 | return sym; | |
1779 | } | |
1780 | ||
b5ec771e PA |
1781 | /* See symtab.h. */ |
1782 | ||
1783 | demangle_for_lookup_info::demangle_for_lookup_info | |
1784 | (const lookup_name_info &lookup_name, language lang) | |
1785 | { | |
1786 | demangle_result_storage storage; | |
1787 | ||
c62446b1 PA |
1788 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1789 | { | |
1790 | gdb::unique_xmalloc_ptr<char> without_params | |
1791 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1792 | lookup_name.completion_mode ()); | |
1793 | ||
1794 | if (without_params != NULL) | |
1795 | { | |
de63c46b PA |
1796 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1797 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1798 | lang, storage); | |
c62446b1 PA |
1799 | return; |
1800 | } | |
1801 | } | |
1802 | ||
de63c46b PA |
1803 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1804 | m_demangled_name = lookup_name.name (); | |
1805 | else | |
1806 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1807 | lang, storage); | |
b5ec771e PA |
1808 | } |
1809 | ||
1810 | /* See symtab.h. */ | |
1811 | ||
1812 | const lookup_name_info & | |
1813 | lookup_name_info::match_any () | |
1814 | { | |
1815 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1816 | symbol names. */ | |
1817 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1818 | true); | |
1819 | ||
1820 | return lookup_name; | |
1821 | } | |
1822 | ||
f8eba3c6 | 1823 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1824 | lookup functions. The result can either be the input NAME |
1825 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1826 | |
2f408ecb | 1827 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1828 | Normally, Ada symbol lookups are performed using the encoded name |
1829 | rather than the demangled name, and so it might seem to make sense | |
1830 | for this function to return an encoded version of NAME. | |
1831 | Unfortunately, we cannot do this, because this function is used in | |
1832 | circumstances where it is not appropriate to try to encode NAME. | |
1833 | For instance, when displaying the frame info, we demangle the name | |
1834 | of each parameter, and then perform a symbol lookup inside our | |
1835 | function using that demangled name. In Ada, certain functions | |
1836 | have internally-generated parameters whose name contain uppercase | |
1837 | characters. Encoding those name would result in those uppercase | |
1838 | characters to become lowercase, and thus cause the symbol lookup | |
1839 | to fail. */ | |
c906108c | 1840 | |
2f408ecb | 1841 | const char * |
f8eba3c6 | 1842 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1843 | demangle_result_storage &storage) |
c906108c | 1844 | { |
9c37b5ae | 1845 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1846 | lookup, so we can always binary search. */ |
53c5240f | 1847 | if (lang == language_cplus) |
729051e6 | 1848 | { |
2f408ecb PA |
1849 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1850 | if (demangled_name != NULL) | |
1851 | return storage.set_malloc_ptr (demangled_name); | |
1852 | ||
1853 | /* If we were given a non-mangled name, canonicalize it | |
1854 | according to the language (so far only for C++). */ | |
1855 | std::string canon = cp_canonicalize_string (name); | |
1856 | if (!canon.empty ()) | |
1857 | return storage.swap_string (canon); | |
729051e6 | 1858 | } |
6aecb9c2 JB |
1859 | else if (lang == language_d) |
1860 | { | |
2f408ecb PA |
1861 | char *demangled_name = d_demangle (name, 0); |
1862 | if (demangled_name != NULL) | |
1863 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1864 | } |
a766d390 DE |
1865 | else if (lang == language_go) |
1866 | { | |
2f408ecb PA |
1867 | char *demangled_name = go_demangle (name, 0); |
1868 | if (demangled_name != NULL) | |
1869 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1870 | } |
729051e6 | 1871 | |
2f408ecb | 1872 | return name; |
f8eba3c6 TT |
1873 | } |
1874 | ||
5ffa0793 PA |
1875 | /* See symtab.h. */ |
1876 | ||
1877 | unsigned int | |
1878 | search_name_hash (enum language language, const char *search_name) | |
1879 | { | |
1880 | return language_def (language)->la_search_name_hash (search_name); | |
1881 | } | |
1882 | ||
cf901d3b | 1883 | /* See symtab.h. |
f8eba3c6 | 1884 | |
cf901d3b | 1885 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1886 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1887 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1888 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1889 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1890 | that there is C++ code below which can error(), but that probably |
1891 | doesn't affect these calls since they are looking for a known | |
1892 | variable and thus can probably assume it will never hit the C++ | |
1893 | code). */ | |
1894 | ||
d12307c1 | 1895 | struct block_symbol |
f8eba3c6 TT |
1896 | lookup_symbol_in_language (const char *name, const struct block *block, |
1897 | const domain_enum domain, enum language lang, | |
1993b719 | 1898 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1899 | { |
2f408ecb PA |
1900 | demangle_result_storage storage; |
1901 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1902 | |
de63c46b PA |
1903 | return lookup_symbol_aux (modified_name, |
1904 | symbol_name_match_type::FULL, | |
1905 | block, domain, lang, | |
2f408ecb | 1906 | is_a_field_of_this); |
fba7f19c EZ |
1907 | } |
1908 | ||
cf901d3b | 1909 | /* See symtab.h. */ |
53c5240f | 1910 | |
d12307c1 | 1911 | struct block_symbol |
53c5240f | 1912 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1913 | domain_enum domain, |
1914 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1915 | { |
1916 | return lookup_symbol_in_language (name, block, domain, | |
1917 | current_language->la_language, | |
2570f2b7 | 1918 | is_a_field_of_this); |
53c5240f PA |
1919 | } |
1920 | ||
cf901d3b | 1921 | /* See symtab.h. */ |
66a17cb6 | 1922 | |
de63c46b PA |
1923 | struct block_symbol |
1924 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1925 | domain_enum domain) | |
1926 | { | |
1927 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1928 | block, domain, language_asm, NULL); | |
1929 | } | |
1930 | ||
1931 | /* See symtab.h. */ | |
1932 | ||
d12307c1 | 1933 | struct block_symbol |
66a17cb6 TT |
1934 | lookup_language_this (const struct language_defn *lang, |
1935 | const struct block *block) | |
1936 | { | |
1937 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1938 | return {}; |
66a17cb6 | 1939 | |
cc485e62 DE |
1940 | if (symbol_lookup_debug > 1) |
1941 | { | |
1942 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1943 | ||
1944 | fprintf_unfiltered (gdb_stdlog, | |
1945 | "lookup_language_this (%s, %s (objfile %s))", | |
1946 | lang->la_name, host_address_to_string (block), | |
1947 | objfile_debug_name (objfile)); | |
1948 | } | |
1949 | ||
03de6823 | 1950 | while (block) |
66a17cb6 TT |
1951 | { |
1952 | struct symbol *sym; | |
1953 | ||
de63c46b PA |
1954 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1955 | symbol_name_match_type::SEARCH_NAME, | |
1956 | VAR_DOMAIN); | |
66a17cb6 | 1957 | if (sym != NULL) |
f149aabd | 1958 | { |
cc485e62 DE |
1959 | if (symbol_lookup_debug > 1) |
1960 | { | |
1961 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1962 | SYMBOL_PRINT_NAME (sym), | |
1963 | host_address_to_string (sym), | |
1964 | host_address_to_string (block)); | |
1965 | } | |
d12307c1 | 1966 | return (struct block_symbol) {sym, block}; |
f149aabd | 1967 | } |
66a17cb6 | 1968 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1969 | break; |
66a17cb6 TT |
1970 | block = BLOCK_SUPERBLOCK (block); |
1971 | } | |
03de6823 | 1972 | |
cc485e62 DE |
1973 | if (symbol_lookup_debug > 1) |
1974 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1975 | return {}; |
66a17cb6 TT |
1976 | } |
1977 | ||
2dc3df72 TT |
1978 | /* Given TYPE, a structure/union, |
1979 | return 1 if the component named NAME from the ultimate target | |
1980 | structure/union is defined, otherwise, return 0. */ | |
1981 | ||
1982 | static int | |
1993b719 TT |
1983 | check_field (struct type *type, const char *name, |
1984 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1985 | { |
1986 | int i; | |
1987 | ||
1988 | /* The type may be a stub. */ | |
f168693b | 1989 | type = check_typedef (type); |
2dc3df72 TT |
1990 | |
1991 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1992 | { | |
1993 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1994 | ||
1995 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1996 | { |
1997 | is_a_field_of_this->type = type; | |
1998 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1999 | return 1; | |
2000 | } | |
2dc3df72 TT |
2001 | } |
2002 | ||
2003 | /* C++: If it was not found as a data field, then try to return it | |
2004 | as a pointer to a method. */ | |
2005 | ||
2006 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
2007 | { | |
2008 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
2009 | { |
2010 | is_a_field_of_this->type = type; | |
2011 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
2012 | return 1; | |
2013 | } | |
2dc3df72 TT |
2014 | } |
2015 | ||
2016 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 2017 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2018 | return 1; |
2019 | ||
2020 | return 0; | |
2021 | } | |
2022 | ||
53c5240f | 2023 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2024 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2025 | |
d12307c1 | 2026 | static struct block_symbol |
de63c46b PA |
2027 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2028 | const struct block *block, | |
94af9270 | 2029 | const domain_enum domain, enum language language, |
1993b719 | 2030 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2031 | { |
d12307c1 | 2032 | struct block_symbol result; |
53c5240f | 2033 | const struct language_defn *langdef; |
406bc4de | 2034 | |
cc485e62 DE |
2035 | if (symbol_lookup_debug) |
2036 | { | |
2037 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2038 | ||
2039 | fprintf_unfiltered (gdb_stdlog, | |
2040 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2041 | name, host_address_to_string (block), | |
2042 | objfile != NULL | |
2043 | ? objfile_debug_name (objfile) : "NULL", | |
2044 | domain_name (domain), language_str (language)); | |
2045 | } | |
2046 | ||
9a146a11 EZ |
2047 | /* Make sure we do something sensible with is_a_field_of_this, since |
2048 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2049 | certainly use it later. If we don't set it, the contents of |
2050 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2051 | if (is_a_field_of_this != NULL) |
1993b719 | 2052 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2053 | |
e4051eeb DC |
2054 | /* Search specified block and its superiors. Don't search |
2055 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2056 | |
de63c46b | 2057 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2058 | if (result.symbol != NULL) |
cc485e62 DE |
2059 | { |
2060 | if (symbol_lookup_debug) | |
2061 | { | |
2062 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2063 | host_address_to_string (result.symbol)); |
cc485e62 | 2064 | } |
d12307c1 | 2065 | return result; |
cc485e62 | 2066 | } |
c906108c | 2067 | |
53c5240f | 2068 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2069 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2070 | |
2071 | langdef = language_def (language); | |
5f9a71c3 | 2072 | |
6592e36f TT |
2073 | /* Don't do this check if we are searching for a struct. It will |
2074 | not be found by check_field, but will be found by other | |
2075 | means. */ | |
2076 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2077 | { |
d12307c1 | 2078 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2079 | |
d12307c1 | 2080 | if (result.symbol) |
c906108c | 2081 | { |
d12307c1 | 2082 | struct type *t = result.symbol->type; |
9af17804 | 2083 | |
2b2d9e11 VP |
2084 | /* I'm not really sure that type of this can ever |
2085 | be typedefed; just be safe. */ | |
f168693b | 2086 | t = check_typedef (t); |
aa006118 | 2087 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2088 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2089 | |
2b2d9e11 VP |
2090 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2091 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2092 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2093 | langdef->la_name_of_this); |
9af17804 | 2094 | |
1993b719 | 2095 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2096 | { |
2097 | if (symbol_lookup_debug) | |
2098 | { | |
2099 | fprintf_unfiltered (gdb_stdlog, | |
2100 | "lookup_symbol_aux (...) = NULL\n"); | |
2101 | } | |
6640a367 | 2102 | return {}; |
cc485e62 | 2103 | } |
c906108c SS |
2104 | } |
2105 | } | |
2106 | ||
53c5240f | 2107 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2108 | up static and global variables. */ |
c906108c | 2109 | |
d12307c1 PMR |
2110 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2111 | if (result.symbol != NULL) | |
cc485e62 DE |
2112 | { |
2113 | if (symbol_lookup_debug) | |
2114 | { | |
2115 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2116 | host_address_to_string (result.symbol)); |
cc485e62 | 2117 | } |
d12307c1 | 2118 | return result; |
cc485e62 | 2119 | } |
c906108c | 2120 | |
774b6a14 TT |
2121 | /* Now search all static file-level symbols. Not strictly correct, |
2122 | but more useful than an error. */ | |
41f62f39 | 2123 | |
d12307c1 | 2124 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2125 | if (symbol_lookup_debug) |
2126 | { | |
2127 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2128 | result.symbol != NULL |
2129 | ? host_address_to_string (result.symbol) | |
2130 | : "NULL"); | |
cc485e62 | 2131 | } |
d12307c1 | 2132 | return result; |
41f62f39 JK |
2133 | } |
2134 | ||
e4051eeb | 2135 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2136 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2137 | |
d12307c1 | 2138 | static struct block_symbol |
de63c46b PA |
2139 | lookup_local_symbol (const char *name, |
2140 | symbol_name_match_type match_type, | |
2141 | const struct block *block, | |
74016e12 DE |
2142 | const domain_enum domain, |
2143 | enum language language) | |
8155455b DC |
2144 | { |
2145 | struct symbol *sym; | |
89a9d1b1 | 2146 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2147 | const char *scope = block_scope (block); |
2148 | ||
e4051eeb DC |
2149 | /* Check if either no block is specified or it's a global block. */ |
2150 | ||
89a9d1b1 | 2151 | if (static_block == NULL) |
6640a367 | 2152 | return {}; |
e4051eeb | 2153 | |
89a9d1b1 | 2154 | while (block != static_block) |
f61e8913 | 2155 | { |
de63c46b | 2156 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2157 | if (sym != NULL) |
d12307c1 | 2158 | return (struct block_symbol) {sym, block}; |
edb3359d | 2159 | |
f55ee35c | 2160 | if (language == language_cplus || language == language_fortran) |
13387711 | 2161 | { |
b926417a | 2162 | struct block_symbol blocksym |
d12307c1 PMR |
2163 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2164 | domain); | |
2165 | ||
b926417a TT |
2166 | if (blocksym.symbol != NULL) |
2167 | return blocksym; | |
13387711 SW |
2168 | } |
2169 | ||
edb3359d DJ |
2170 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2171 | break; | |
f61e8913 DC |
2172 | block = BLOCK_SUPERBLOCK (block); |
2173 | } | |
2174 | ||
3aee438b | 2175 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2176 | |
6640a367 | 2177 | return {}; |
f61e8913 DC |
2178 | } |
2179 | ||
cf901d3b | 2180 | /* See symtab.h. */ |
3a40aaa0 | 2181 | |
c0201579 | 2182 | struct objfile * |
3a40aaa0 UW |
2183 | lookup_objfile_from_block (const struct block *block) |
2184 | { | |
3a40aaa0 UW |
2185 | if (block == NULL) |
2186 | return NULL; | |
2187 | ||
2188 | block = block_global_block (block); | |
43f3e411 | 2189 | /* Look through all blockvectors. */ |
2030c079 | 2190 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2191 | { |
b669c953 | 2192 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2193 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2194 | GLOBAL_BLOCK)) | |
2195 | { | |
2196 | if (obj->separate_debug_objfile_backlink) | |
2197 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2198 | |
d8aeb77f TT |
2199 | return obj; |
2200 | } | |
2201 | } | |
3a40aaa0 UW |
2202 | |
2203 | return NULL; | |
2204 | } | |
2205 | ||
cf901d3b | 2206 | /* See symtab.h. */ |
f61e8913 | 2207 | |
5f9a71c3 | 2208 | struct symbol * |
de63c46b PA |
2209 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2210 | const struct block *block, | |
d1a2d36d | 2211 | const domain_enum domain) |
f61e8913 DC |
2212 | { |
2213 | struct symbol *sym; | |
f61e8913 | 2214 | |
cc485e62 DE |
2215 | if (symbol_lookup_debug > 1) |
2216 | { | |
2217 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2218 | ||
2219 | fprintf_unfiltered (gdb_stdlog, | |
2220 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2221 | name, host_address_to_string (block), | |
2222 | objfile_debug_name (objfile), | |
2223 | domain_name (domain)); | |
2224 | } | |
2225 | ||
de63c46b | 2226 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2227 | if (sym) |
8155455b | 2228 | { |
cc485e62 DE |
2229 | if (symbol_lookup_debug > 1) |
2230 | { | |
2231 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2232 | host_address_to_string (sym)); | |
2233 | } | |
21b556f4 | 2234 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2235 | } |
2236 | ||
cc485e62 DE |
2237 | if (symbol_lookup_debug > 1) |
2238 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2239 | return NULL; |
2240 | } | |
2241 | ||
cf901d3b | 2242 | /* See symtab.h. */ |
3a40aaa0 | 2243 | |
d12307c1 | 2244 | struct block_symbol |
efad9b6a | 2245 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 2246 | const char *name, |
21b556f4 | 2247 | const domain_enum domain) |
3a40aaa0 | 2248 | { |
bde09ab7 | 2249 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2250 | { |
d12307c1 PMR |
2251 | struct block_symbol result |
2252 | = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain); | |
15d123c9 | 2253 | |
d12307c1 PMR |
2254 | if (result.symbol != NULL) |
2255 | return result; | |
15d123c9 | 2256 | } |
56e3f43c | 2257 | |
6640a367 | 2258 | return {}; |
3a40aaa0 UW |
2259 | } |
2260 | ||
19630284 JB |
2261 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2262 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2263 | depending on whether or not we want to search global symbols or |
2264 | static symbols. */ | |
2265 | ||
d12307c1 | 2266 | static struct block_symbol |
74016e12 DE |
2267 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
2268 | const char *name, const domain_enum domain) | |
19630284 | 2269 | { |
ba715d7f JK |
2270 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2271 | ||
cc485e62 DE |
2272 | if (symbol_lookup_debug > 1) |
2273 | { | |
2274 | fprintf_unfiltered (gdb_stdlog, | |
2275 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2276 | objfile_debug_name (objfile), | |
2277 | block_index == GLOBAL_BLOCK | |
2278 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2279 | name, domain_name (domain)); | |
2280 | } | |
2281 | ||
b669c953 | 2282 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2283 | { |
43f3e411 DE |
2284 | const struct blockvector *bv; |
2285 | const struct block *block; | |
d12307c1 | 2286 | struct block_symbol result; |
43f3e411 DE |
2287 | |
2288 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2289 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2290 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2291 | result.block = block; | |
2292 | if (result.symbol != NULL) | |
a743abeb | 2293 | { |
cc485e62 DE |
2294 | if (symbol_lookup_debug > 1) |
2295 | { | |
2296 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2297 | host_address_to_string (result.symbol), |
cc485e62 DE |
2298 | host_address_to_string (block)); |
2299 | } | |
d12307c1 PMR |
2300 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2301 | return result; | |
2302 | ||
a743abeb DE |
2303 | } |
2304 | } | |
19630284 | 2305 | |
cc485e62 DE |
2306 | if (symbol_lookup_debug > 1) |
2307 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2308 | return {}; |
19630284 JB |
2309 | } |
2310 | ||
74016e12 | 2311 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2312 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2313 | and all associated separate debug objfiles. |
2314 | ||
2315 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2316 | because the outer loop will cause them to be searched too. This case is | |
2317 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2318 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2319 | |
d12307c1 | 2320 | static struct block_symbol |
422d65e7 DE |
2321 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2322 | const char *linkage_name, | |
2323 | domain_enum domain) | |
2324 | { | |
2325 | enum language lang = current_language->la_language; | |
e9ad22ee | 2326 | struct objfile *main_objfile; |
422d65e7 | 2327 | |
2f408ecb PA |
2328 | demangle_result_storage storage; |
2329 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2330 | ||
422d65e7 DE |
2331 | if (objfile->separate_debug_objfile_backlink) |
2332 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2333 | else | |
2334 | main_objfile = objfile; | |
2335 | ||
bde09ab7 | 2336 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2337 | { |
d12307c1 PMR |
2338 | struct block_symbol result; |
2339 | ||
2340 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2341 | modified_name, domain); | |
2342 | if (result.symbol == NULL) | |
2343 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2344 | modified_name, domain); | |
2345 | if (result.symbol != NULL) | |
2f408ecb | 2346 | return result; |
422d65e7 DE |
2347 | } |
2348 | ||
6640a367 | 2349 | return {}; |
422d65e7 DE |
2350 | } |
2351 | ||
08c23b0d TT |
2352 | /* A helper function that throws an exception when a symbol was found |
2353 | in a psymtab but not in a symtab. */ | |
2354 | ||
2355 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 2356 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 2357 | struct compunit_symtab *cust) |
08c23b0d TT |
2358 | { |
2359 | error (_("\ | |
2360 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2361 | %s may be an inlined function, or may be a template function\n \ | |
2362 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2363 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2364 | name, |
2365 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2366 | name, name); | |
08c23b0d TT |
2367 | } |
2368 | ||
74016e12 DE |
2369 | /* A helper function for various lookup routines that interfaces with |
2370 | the "quick" symbol table functions. */ | |
8155455b | 2371 | |
d12307c1 | 2372 | static struct block_symbol |
74016e12 DE |
2373 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
2374 | const char *name, const domain_enum domain) | |
8155455b | 2375 | { |
43f3e411 | 2376 | struct compunit_symtab *cust; |
346d1dfe | 2377 | const struct blockvector *bv; |
8155455b | 2378 | const struct block *block; |
d12307c1 | 2379 | struct block_symbol result; |
8155455b | 2380 | |
ccefe4c4 | 2381 | if (!objfile->sf) |
6640a367 | 2382 | return {}; |
cc485e62 DE |
2383 | |
2384 | if (symbol_lookup_debug > 1) | |
2385 | { | |
2386 | fprintf_unfiltered (gdb_stdlog, | |
2387 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2388 | objfile_debug_name (objfile), | |
2389 | block_index == GLOBAL_BLOCK | |
2390 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2391 | name, domain_name (domain)); | |
2392 | } | |
2393 | ||
43f3e411 DE |
2394 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2395 | if (cust == NULL) | |
cc485e62 DE |
2396 | { |
2397 | if (symbol_lookup_debug > 1) | |
2398 | { | |
2399 | fprintf_unfiltered (gdb_stdlog, | |
2400 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2401 | } | |
6640a367 | 2402 | return {}; |
cc485e62 | 2403 | } |
8155455b | 2404 | |
43f3e411 | 2405 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2406 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2407 | result.symbol = block_lookup_symbol (block, name, |
2408 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2409 | if (result.symbol == NULL) |
43f3e411 | 2410 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2411 | |
2412 | if (symbol_lookup_debug > 1) | |
2413 | { | |
2414 | fprintf_unfiltered (gdb_stdlog, | |
2415 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2416 | host_address_to_string (result.symbol), |
cc485e62 DE |
2417 | host_address_to_string (block)); |
2418 | } | |
2419 | ||
d12307c1 PMR |
2420 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2421 | result.block = block; | |
2422 | return result; | |
8155455b DC |
2423 | } |
2424 | ||
cf901d3b | 2425 | /* See symtab.h. */ |
5f9a71c3 | 2426 | |
d12307c1 | 2427 | struct block_symbol |
f606139a DE |
2428 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2429 | const char *name, | |
5f9a71c3 | 2430 | const struct block *block, |
21b556f4 | 2431 | const domain_enum domain) |
5f9a71c3 | 2432 | { |
d12307c1 | 2433 | struct block_symbol result; |
5f9a71c3 DC |
2434 | |
2435 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2436 | this (or what turned into this) was part of lookup_symbol_aux; | |
2437 | I'm much less worried about these questions now, since these | |
2438 | decisions have turned out well, but I leave these comments here | |
2439 | for posterity. */ | |
2440 | ||
2441 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2442 | not it would be appropriate to search the current global block | |
2443 | here as well. (That's what this code used to do before the | |
2444 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2445 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2446 | next. On the other hand, if decode_line_1 is passed an argument |
2447 | like filename:var, then the user presumably wants 'var' to be | |
2448 | searched for in filename. On the third hand, there shouldn't be | |
2449 | multiple global variables all of which are named 'var', and it's | |
2450 | not like decode_line_1 has ever restricted its search to only | |
2451 | global variables in a single filename. All in all, only | |
2452 | searching the static block here seems best: it's correct and it's | |
2453 | cleanest. */ | |
2454 | ||
2455 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2456 | issue here: if you usually search for global symbols in the | |
2457 | current file, then it would be slightly better to search the | |
2458 | current global block before searching all the symtabs. But there | |
2459 | are other factors that have a much greater effect on performance | |
2460 | than that one, so I don't think we should worry about that for | |
2461 | now. */ | |
2462 | ||
d9060ba6 DE |
2463 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2464 | the current objfile. Searching the current objfile first is useful | |
2465 | for both matching user expectations as well as performance. */ | |
2466 | ||
d12307c1 PMR |
2467 | result = lookup_symbol_in_static_block (name, block, domain); |
2468 | if (result.symbol != NULL) | |
2469 | return result; | |
5f9a71c3 | 2470 | |
1994afbf DE |
2471 | /* If we didn't find a definition for a builtin type in the static block, |
2472 | search for it now. This is actually the right thing to do and can be | |
2473 | a massive performance win. E.g., when debugging a program with lots of | |
2474 | shared libraries we could search all of them only to find out the | |
2475 | builtin type isn't defined in any of them. This is common for types | |
2476 | like "void". */ | |
2477 | if (domain == VAR_DOMAIN) | |
2478 | { | |
2479 | struct gdbarch *gdbarch; | |
2480 | ||
2481 | if (block == NULL) | |
2482 | gdbarch = target_gdbarch (); | |
2483 | else | |
2484 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2485 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2486 | gdbarch, name); | |
2487 | result.block = NULL; | |
2488 | if (result.symbol != NULL) | |
2489 | return result; | |
1994afbf DE |
2490 | } |
2491 | ||
08724ab7 | 2492 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2493 | } |
2494 | ||
cf901d3b | 2495 | /* See symtab.h. */ |
5f9a71c3 | 2496 | |
d12307c1 | 2497 | struct block_symbol |
24d864bb DE |
2498 | lookup_symbol_in_static_block (const char *name, |
2499 | const struct block *block, | |
2500 | const domain_enum domain) | |
5f9a71c3 DC |
2501 | { |
2502 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2503 | struct symbol *sym; |
5f9a71c3 | 2504 | |
cc485e62 | 2505 | if (static_block == NULL) |
6640a367 | 2506 | return {}; |
cc485e62 DE |
2507 | |
2508 | if (symbol_lookup_debug) | |
2509 | { | |
2510 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2511 | ||
2512 | fprintf_unfiltered (gdb_stdlog, | |
2513 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2514 | " %s)\n", | |
2515 | name, | |
2516 | host_address_to_string (block), | |
2517 | objfile_debug_name (objfile), | |
2518 | domain_name (domain)); | |
2519 | } | |
2520 | ||
de63c46b PA |
2521 | sym = lookup_symbol_in_block (name, |
2522 | symbol_name_match_type::FULL, | |
2523 | static_block, domain); | |
cc485e62 DE |
2524 | if (symbol_lookup_debug) |
2525 | { | |
2526 | fprintf_unfiltered (gdb_stdlog, | |
2527 | "lookup_symbol_in_static_block (...) = %s\n", | |
2528 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2529 | } | |
d12307c1 | 2530 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2531 | } |
2532 | ||
af3768e9 DE |
2533 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2534 | 1) First search expanded symtabs, and if not found | |
2535 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2536 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2537 | ||
d12307c1 | 2538 | static struct block_symbol |
af3768e9 DE |
2539 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
2540 | const char *name, const domain_enum domain) | |
2541 | { | |
d12307c1 | 2542 | struct block_symbol result; |
af3768e9 | 2543 | |
cc485e62 DE |
2544 | if (symbol_lookup_debug) |
2545 | { | |
2546 | fprintf_unfiltered (gdb_stdlog, | |
2547 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2548 | objfile_debug_name (objfile), | |
2549 | block_index == GLOBAL_BLOCK | |
2550 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2551 | name, domain_name (domain)); | |
2552 | } | |
2553 | ||
af3768e9 DE |
2554 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2555 | name, domain); | |
d12307c1 | 2556 | if (result.symbol != NULL) |
af3768e9 | 2557 | { |
cc485e62 DE |
2558 | if (symbol_lookup_debug) |
2559 | { | |
2560 | fprintf_unfiltered (gdb_stdlog, | |
2561 | "lookup_symbol_in_objfile (...) = %s" | |
2562 | " (in symtabs)\n", | |
d12307c1 | 2563 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2564 | } |
2565 | return result; | |
af3768e9 DE |
2566 | } |
2567 | ||
cc485e62 DE |
2568 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2569 | name, domain); | |
2570 | if (symbol_lookup_debug) | |
2571 | { | |
2572 | fprintf_unfiltered (gdb_stdlog, | |
2573 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2574 | result.symbol != NULL |
2575 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2576 | : "NULL", |
d12307c1 | 2577 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2578 | } |
af3768e9 DE |
2579 | return result; |
2580 | } | |
2581 | ||
2582 | /* See symtab.h. */ | |
2583 | ||
d12307c1 | 2584 | struct block_symbol |
af3768e9 DE |
2585 | lookup_static_symbol (const char *name, const domain_enum domain) |
2586 | { | |
f57d2163 | 2587 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2588 | struct block_symbol result; |
f57d2163 DE |
2589 | struct block_symbol_cache *bsc; |
2590 | struct symbol_cache_slot *slot; | |
2591 | ||
2592 | /* Lookup in STATIC_BLOCK is not current-objfile-dependent, so just pass | |
2593 | NULL for OBJFILE_CONTEXT. */ | |
2594 | result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain, | |
2595 | &bsc, &slot); | |
d12307c1 | 2596 | if (result.symbol != NULL) |
f57d2163 | 2597 | { |
d12307c1 | 2598 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2599 | return {}; |
f57d2163 DE |
2600 | return result; |
2601 | } | |
af3768e9 | 2602 | |
2030c079 | 2603 | for (objfile *objfile : current_program_space->objfiles ()) |
af3768e9 DE |
2604 | { |
2605 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
d12307c1 | 2606 | if (result.symbol != NULL) |
f57d2163 DE |
2607 | { |
2608 | /* Still pass NULL for OBJFILE_CONTEXT here. */ | |
d12307c1 PMR |
2609 | symbol_cache_mark_found (bsc, slot, NULL, result.symbol, |
2610 | result.block); | |
f57d2163 DE |
2611 | return result; |
2612 | } | |
af3768e9 DE |
2613 | } |
2614 | ||
f57d2163 DE |
2615 | /* Still pass NULL for OBJFILE_CONTEXT here. */ |
2616 | symbol_cache_mark_not_found (bsc, slot, NULL, name, domain); | |
6640a367 | 2617 | return {}; |
af3768e9 DE |
2618 | } |
2619 | ||
19630284 JB |
2620 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2621 | ||
2622 | struct global_sym_lookup_data | |
2623 | { | |
2624 | /* The name of the symbol we are searching for. */ | |
2625 | const char *name; | |
2626 | ||
2627 | /* The domain to use for our search. */ | |
2628 | domain_enum domain; | |
2629 | ||
2630 | /* The field where the callback should store the symbol if found. | |
d12307c1 PMR |
2631 | It should be initialized to {NULL, NULL} before the search is started. */ |
2632 | struct block_symbol result; | |
19630284 JB |
2633 | }; |
2634 | ||
2635 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
2636 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
2637 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
2638 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
2639 | ||
2640 | static int | |
2641 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
2642 | void *cb_data) | |
2643 | { | |
2644 | struct global_sym_lookup_data *data = | |
2645 | (struct global_sym_lookup_data *) cb_data; | |
2646 | ||
d12307c1 PMR |
2647 | gdb_assert (data->result.symbol == NULL |
2648 | && data->result.block == NULL); | |
19630284 | 2649 | |
af3768e9 DE |
2650 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
2651 | data->name, data->domain); | |
19630284 JB |
2652 | |
2653 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2654 | keep going. */ | |
d12307c1 | 2655 | return (data->result.symbol != NULL); |
19630284 JB |
2656 | } |
2657 | ||
cf901d3b | 2658 | /* See symtab.h. */ |
5f9a71c3 | 2659 | |
d12307c1 | 2660 | struct block_symbol |
08724ab7 | 2661 | lookup_global_symbol (const char *name, |
3a40aaa0 | 2662 | const struct block *block, |
21b556f4 | 2663 | const domain_enum domain) |
5f9a71c3 | 2664 | { |
f57d2163 | 2665 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2666 | struct block_symbol result; |
f57d2163 | 2667 | struct objfile *objfile; |
19630284 | 2668 | struct global_sym_lookup_data lookup_data; |
f57d2163 DE |
2669 | struct block_symbol_cache *bsc; |
2670 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2671 | |
6a3ca067 | 2672 | objfile = lookup_objfile_from_block (block); |
f57d2163 DE |
2673 | |
2674 | /* First see if we can find the symbol in the cache. | |
2675 | This works because we use the current objfile to qualify the lookup. */ | |
d12307c1 PMR |
2676 | result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain, |
2677 | &bsc, &slot); | |
2678 | if (result.symbol != NULL) | |
f57d2163 | 2679 | { |
d12307c1 | 2680 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2681 | return {}; |
d12307c1 | 2682 | return result; |
f57d2163 DE |
2683 | } |
2684 | ||
2685 | /* Call library-specific lookup procedure. */ | |
67ff19f7 | 2686 | if (objfile != NULL) |
d12307c1 | 2687 | result = solib_global_lookup (objfile, name, domain); |
b2fb95e0 | 2688 | |
f57d2163 | 2689 | /* If that didn't work go a global search (of global blocks, heh). */ |
d12307c1 | 2690 | if (result.symbol == NULL) |
f57d2163 DE |
2691 | { |
2692 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2693 | lookup_data.name = name; | |
2694 | lookup_data.domain = domain; | |
2695 | gdbarch_iterate_over_objfiles_in_search_order | |
2696 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
2697 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); | |
d12307c1 | 2698 | result = lookup_data.result; |
f57d2163 | 2699 | } |
6a3ca067 | 2700 | |
d12307c1 PMR |
2701 | if (result.symbol != NULL) |
2702 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2703 | else |
2704 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2705 | ||
d12307c1 | 2706 | return result; |
5f9a71c3 DC |
2707 | } |
2708 | ||
4186eb54 KS |
2709 | int |
2710 | symbol_matches_domain (enum language symbol_language, | |
2711 | domain_enum symbol_domain, | |
2712 | domain_enum domain) | |
2713 | { | |
2714 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2715 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2716 | if (symbol_language == language_cplus | |
2717 | || symbol_language == language_d | |
65547233 TT |
2718 | || symbol_language == language_ada |
2719 | || symbol_language == language_rust) | |
4186eb54 KS |
2720 | { |
2721 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2722 | && symbol_domain == STRUCT_DOMAIN) | |
2723 | return 1; | |
2724 | } | |
2725 | /* For all other languages, strict match is required. */ | |
2726 | return (symbol_domain == domain); | |
2727 | } | |
2728 | ||
cf901d3b | 2729 | /* See symtab.h. */ |
c906108c | 2730 | |
ccefe4c4 TT |
2731 | struct type * |
2732 | lookup_transparent_type (const char *name) | |
c906108c | 2733 | { |
ccefe4c4 TT |
2734 | return current_language->la_lookup_transparent_type (name); |
2735 | } | |
9af17804 | 2736 | |
ccefe4c4 TT |
2737 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2738 | "quick" symbol table functions. */ | |
357e46e7 | 2739 | |
ccefe4c4 | 2740 | static struct type * |
f88cb4b6 | 2741 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2742 | const char *name) |
2743 | { | |
43f3e411 | 2744 | struct compunit_symtab *cust; |
346d1dfe | 2745 | const struct blockvector *bv; |
582942f4 | 2746 | const struct block *block; |
ccefe4c4 | 2747 | struct symbol *sym; |
c906108c | 2748 | |
ccefe4c4 TT |
2749 | if (!objfile->sf) |
2750 | return NULL; | |
43f3e411 DE |
2751 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2752 | STRUCT_DOMAIN); | |
2753 | if (cust == NULL) | |
ccefe4c4 | 2754 | return NULL; |
c906108c | 2755 | |
43f3e411 | 2756 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2757 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2758 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2759 | block_find_non_opaque_type, NULL); | |
2760 | if (sym == NULL) | |
43f3e411 | 2761 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2762 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2763 | return SYMBOL_TYPE (sym); | |
2764 | } | |
08c23b0d | 2765 | |
b2e2f908 DE |
2766 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2767 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2768 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2769 | ||
2770 | static struct type * | |
2771 | basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index, | |
2772 | const char *name) | |
2773 | { | |
b2e2f908 DE |
2774 | const struct blockvector *bv; |
2775 | const struct block *block; | |
2776 | const struct symbol *sym; | |
2777 | ||
b669c953 | 2778 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2779 | { |
2780 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2781 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2782 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2783 | block_find_non_opaque_type, NULL); | |
2784 | if (sym != NULL) | |
2785 | { | |
2786 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2787 | return SYMBOL_TYPE (sym); | |
2788 | } | |
2789 | } | |
c906108c | 2790 | |
ccefe4c4 | 2791 | return NULL; |
b368761e | 2792 | } |
c906108c | 2793 | |
b368761e DC |
2794 | /* The standard implementation of lookup_transparent_type. This code |
2795 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2796 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2797 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2798 | global blocks. */ |
c906108c SS |
2799 | |
2800 | struct type * | |
b368761e | 2801 | basic_lookup_transparent_type (const char *name) |
c906108c | 2802 | { |
ccefe4c4 | 2803 | struct type *t; |
c906108c SS |
2804 | |
2805 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2806 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2807 | of the desired name as a global, then do psymtab-to-symtab |
2808 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2809 | |
2030c079 | 2810 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2811 | { |
2812 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2813 | if (t) | |
2814 | return t; | |
2815 | } | |
c906108c | 2816 | |
2030c079 | 2817 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2818 | { |
2819 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2820 | if (t) | |
2821 | return t; | |
2822 | } | |
c906108c SS |
2823 | |
2824 | /* Now search the static file-level symbols. | |
2825 | Not strictly correct, but more useful than an error. | |
2826 | Do the symtab's first, then | |
c378eb4e | 2827 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2828 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2829 | conversion on the fly and return the found symbol. */ |
c906108c | 2830 | |
2030c079 | 2831 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2832 | { |
2833 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2834 | if (t) | |
2835 | return t; | |
2836 | } | |
c906108c | 2837 | |
2030c079 | 2838 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2839 | { |
2840 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2841 | if (t) | |
2842 | return t; | |
2843 | } | |
ccefe4c4 | 2844 | |
c906108c SS |
2845 | return (struct type *) 0; |
2846 | } | |
2847 | ||
4eeaa230 | 2848 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
14bc53a8 PA |
2849 | |
2850 | For each symbol that matches, CALLBACK is called. The symbol is | |
2851 | passed to the callback. | |
2852 | ||
2853 | If CALLBACK returns false, the iteration ends. Otherwise, the | |
4eeaa230 | 2854 | search continues. */ |
f8eba3c6 TT |
2855 | |
2856 | void | |
b5ec771e PA |
2857 | iterate_over_symbols (const struct block *block, |
2858 | const lookup_name_info &name, | |
f8eba3c6 | 2859 | const domain_enum domain, |
14bc53a8 | 2860 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2861 | { |
4eeaa230 DE |
2862 | struct block_iterator iter; |
2863 | struct symbol *sym; | |
f8eba3c6 | 2864 | |
358d6ab3 | 2865 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2866 | { |
4186eb54 KS |
2867 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2868 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2869 | { |
7e41c8db KS |
2870 | struct block_symbol block_sym = {sym, block}; |
2871 | ||
2872 | if (!callback (&block_sym)) | |
4eeaa230 | 2873 | return; |
f8eba3c6 | 2874 | } |
f8eba3c6 TT |
2875 | } |
2876 | } | |
2877 | ||
43f3e411 DE |
2878 | /* Find the compunit symtab associated with PC and SECTION. |
2879 | This will read in debug info as necessary. */ | |
c906108c | 2880 | |
43f3e411 DE |
2881 | struct compunit_symtab * |
2882 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2883 | { |
43f3e411 | 2884 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2885 | CORE_ADDR distance = 0; |
77e371c0 | 2886 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2887 | |
2888 | /* If we know that this is not a text address, return failure. This is | |
2889 | necessary because we loop based on the block's high and low code | |
2890 | addresses, which do not include the data ranges, and because | |
2891 | we call find_pc_sect_psymtab which has a similar restriction based | |
2892 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2893 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2894 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2895 | return NULL; |
c906108c SS |
2896 | |
2897 | /* Search all symtabs for the one whose file contains our address, and which | |
2898 | is the smallest of all the ones containing the address. This is designed | |
2899 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2900 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2901 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2902 | ||
2903 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2904 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2905 | been read in already via the dependency mechanism. |
2906 | It might be swifter to create several symtabs with the same name | |
2907 | like xcoff does (I'm not sure). | |
2908 | ||
2909 | It also happens for objfiles that have their functions reordered. | |
2910 | For these, the symtab we are looking for is not necessarily read in. */ | |
2911 | ||
2030c079 | 2912 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2913 | { |
b669c953 | 2914 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2915 | { |
582942f4 | 2916 | const struct block *b; |
d8aeb77f | 2917 | const struct blockvector *bv; |
43f3e411 | 2918 | |
d8aeb77f TT |
2919 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2920 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2921 | |
d8aeb77f TT |
2922 | if (BLOCK_START (b) <= pc |
2923 | && BLOCK_END (b) > pc | |
2924 | && (distance == 0 | |
2925 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2926 | { | |
2927 | /* For an objfile that has its functions reordered, | |
2928 | find_pc_psymtab will find the proper partial symbol table | |
2929 | and we simply return its corresponding symtab. */ | |
2930 | /* In order to better support objfiles that contain both | |
2931 | stabs and coff debugging info, we continue on if a psymtab | |
2932 | can't be found. */ | |
2933 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2934 | { | |
2935 | struct compunit_symtab *result; | |
2936 | ||
2937 | result | |
2938 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2939 | msymbol, | |
2940 | pc, | |
2941 | section, | |
2942 | 0); | |
2943 | if (result != NULL) | |
2944 | return result; | |
2945 | } | |
2946 | if (section != 0) | |
2947 | { | |
2948 | struct block_iterator iter; | |
2949 | struct symbol *sym = NULL; | |
c906108c | 2950 | |
d8aeb77f TT |
2951 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2952 | { | |
2953 | fixup_symbol_section (sym, obj_file); | |
2954 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2955 | sym), | |
2956 | section)) | |
2957 | break; | |
2958 | } | |
2959 | if (sym == NULL) | |
2960 | continue; /* No symbol in this symtab matches | |
2961 | section. */ | |
2962 | } | |
2963 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2964 | best_cust = cust; | |
2965 | } | |
2966 | } | |
2967 | } | |
c906108c | 2968 | |
43f3e411 DE |
2969 | if (best_cust != NULL) |
2970 | return best_cust; | |
c906108c | 2971 | |
072cabfe DE |
2972 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2973 | ||
2030c079 | 2974 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2975 | { |
2976 | struct compunit_symtab *result; | |
2977 | ||
2978 | if (!objf->sf) | |
2979 | continue; | |
2980 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2981 | msymbol, | |
2982 | pc, section, | |
2983 | 1); | |
2984 | if (result != NULL) | |
2985 | return result; | |
2986 | } | |
ccefe4c4 TT |
2987 | |
2988 | return NULL; | |
c906108c SS |
2989 | } |
2990 | ||
43f3e411 DE |
2991 | /* Find the compunit symtab associated with PC. |
2992 | This will read in debug info as necessary. | |
2993 | Backward compatibility, no section. */ | |
c906108c | 2994 | |
43f3e411 DE |
2995 | struct compunit_symtab * |
2996 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2997 | { |
43f3e411 | 2998 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2999 | } |
71a3c369 TT |
3000 | |
3001 | /* See symtab.h. */ | |
3002 | ||
3003 | struct symbol * | |
3004 | find_symbol_at_address (CORE_ADDR address) | |
3005 | { | |
2030c079 | 3006 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3007 | { |
3008 | if (objfile->sf == NULL | |
3009 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
3010 | continue; | |
71a3c369 | 3011 | |
aed57c53 TT |
3012 | struct compunit_symtab *symtab |
3013 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
3014 | if (symtab != NULL) | |
3015 | { | |
3016 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 3017 | |
aed57c53 | 3018 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 3019 | { |
582942f4 | 3020 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
3021 | struct block_iterator iter; |
3022 | struct symbol *sym; | |
3023 | ||
3024 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3025 | { | |
3026 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3027 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3028 | return sym; | |
3029 | } | |
71a3c369 | 3030 | } |
aed57c53 TT |
3031 | } |
3032 | } | |
71a3c369 TT |
3033 | |
3034 | return NULL; | |
3035 | } | |
3036 | ||
c906108c | 3037 | \f |
c5aa993b | 3038 | |
7e73cedf | 3039 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3040 | Return a structure containing a symtab pointer, a line number, |
3041 | and a pc range for the entire source line. | |
3042 | The value's .pc field is NOT the specified pc. | |
3043 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3044 | use the line that ends there. Otherwise, in that case, the line | |
3045 | that begins there is used. */ | |
3046 | ||
3047 | /* The big complication here is that a line may start in one file, and end just | |
3048 | before the start of another file. This usually occurs when you #include | |
3049 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3050 | range, we must search all symtabs associated with this compilation unit, and | |
3051 | find the one whose first PC is closer than that of the next line in this | |
3052 | symtab. */ | |
3053 | ||
c906108c | 3054 | struct symtab_and_line |
714835d5 | 3055 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3056 | { |
43f3e411 | 3057 | struct compunit_symtab *cust; |
52f0bd74 AC |
3058 | struct linetable *l; |
3059 | int len; | |
52f0bd74 | 3060 | struct linetable_entry *item; |
346d1dfe | 3061 | const struct blockvector *bv; |
7cbd4a93 | 3062 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3063 | |
3064 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3065 | ||
3066 | struct linetable_entry *best = NULL; | |
3067 | CORE_ADDR best_end = 0; | |
3068 | struct symtab *best_symtab = 0; | |
3069 | ||
3070 | /* Store here the first line number | |
3071 | of a file which contains the line at the smallest pc after PC. | |
3072 | If we don't find a line whose range contains PC, | |
3073 | we will use a line one less than this, | |
3074 | with a range from the start of that file to the first line's pc. */ | |
3075 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3076 | |
3077 | /* Info on best line seen in this file. */ | |
3078 | ||
3079 | struct linetable_entry *prev; | |
3080 | ||
3081 | /* If this pc is not from the current frame, | |
3082 | it is the address of the end of a call instruction. | |
3083 | Quite likely that is the start of the following statement. | |
3084 | But what we want is the statement containing the instruction. | |
3085 | Fudge the pc to make sure we get that. */ | |
3086 | ||
b77b1eb7 JB |
3087 | /* It's tempting to assume that, if we can't find debugging info for |
3088 | any function enclosing PC, that we shouldn't search for line | |
3089 | number info, either. However, GAS can emit line number info for | |
3090 | assembly files --- very helpful when debugging hand-written | |
3091 | assembly code. In such a case, we'd have no debug info for the | |
3092 | function, but we would have line info. */ | |
648f4f79 | 3093 | |
c906108c SS |
3094 | if (notcurrent) |
3095 | pc -= 1; | |
3096 | ||
c5aa993b | 3097 | /* elz: added this because this function returned the wrong |
c906108c | 3098 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3099 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3100 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3101 | taken to be the one of the line before the pc. */ |
3102 | ||
c906108c | 3103 | /* RT: Further explanation: |
c5aa993b | 3104 | |
c906108c SS |
3105 | * We have stubs (trampolines) inserted between procedures. |
3106 | * | |
3107 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3108 | * exists in the main image. | |
3109 | * | |
3110 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3111 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3112 | * the others appear as text. E.g.: |
3113 | * | |
9af17804 | 3114 | * Minimal symbol table for main image |
c906108c SS |
3115 | * main: code for main (text symbol) |
3116 | * shr1: stub (trampoline symbol) | |
3117 | * foo: code for foo (text symbol) | |
3118 | * ... | |
3119 | * Minimal symbol table for "shr1" image: | |
3120 | * ... | |
3121 | * shr1: code for shr1 (text symbol) | |
3122 | * ... | |
3123 | * | |
3124 | * So the code below is trying to detect if we are in the stub | |
3125 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3126 | * and if found, do the symbolization from the real-code address | |
3127 | * rather than the stub address. | |
3128 | * | |
3129 | * Assumptions being made about the minimal symbol table: | |
3130 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3131 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3132 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3133 | * symbol (the "foo" text symbol for example) and will not |
3134 | * return the trampoline. | |
3135 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3136 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3137 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3138 | * check for the address being the same, to avoid an |
3139 | * infinite recursion. | |
3140 | */ | |
c5aa993b | 3141 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3142 | if (msymbol.minsym != NULL) |
3143 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3144 | { |
77e371c0 | 3145 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3146 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3147 | NULL); |
3148 | ||
3149 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3150 | /* I eliminated this warning since it is coming out |
3151 | * in the following situation: | |
3152 | * gdb shmain // test program with shared libraries | |
3153 | * (gdb) break shr1 // function in shared lib | |
3154 | * Warning: In stub for ... | |
9af17804 | 3155 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3156 | * so of course we can't find the real func/line info, |
3157 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3158 | * So I commented out the warning. RT */ |
3e43a32a | 3159 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3160 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3161 | ; | |
c5aa993b | 3162 | /* fall through */ |
77e371c0 TT |
3163 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3164 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3165 | /* Avoid infinite recursion */ |
c378eb4e | 3166 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3167 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3168 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3169 | ; | |
c5aa993b JM |
3170 | /* fall through */ |
3171 | else | |
77e371c0 | 3172 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3173 | } |
c906108c | 3174 | |
51abb421 PA |
3175 | symtab_and_line val; |
3176 | val.pspace = current_program_space; | |
c906108c | 3177 | |
43f3e411 DE |
3178 | cust = find_pc_sect_compunit_symtab (pc, section); |
3179 | if (cust == NULL) | |
c906108c | 3180 | { |
c378eb4e | 3181 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3182 | if (notcurrent) |
3183 | pc++; | |
3184 | val.pc = pc; | |
3185 | return val; | |
3186 | } | |
3187 | ||
43f3e411 | 3188 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3189 | |
3190 | /* Look at all the symtabs that share this blockvector. | |
3191 | They all have the same apriori range, that we found was right; | |
3192 | but they have different line tables. */ | |
3193 | ||
5accd1a0 | 3194 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3195 | { |
3196 | /* Find the best line in this symtab. */ | |
43f3e411 | 3197 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3198 | if (!l) |
c5aa993b | 3199 | continue; |
c906108c SS |
3200 | len = l->nitems; |
3201 | if (len <= 0) | |
3202 | { | |
3203 | /* I think len can be zero if the symtab lacks line numbers | |
3204 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3205 | I'm not sure which, and maybe it depends on the symbol | |
3206 | reader). */ | |
3207 | continue; | |
3208 | } | |
3209 | ||
3210 | prev = NULL; | |
c378eb4e | 3211 | item = l->item; /* Get first line info. */ |
c906108c SS |
3212 | |
3213 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3214 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3215 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3216 | alt = item; |
c906108c | 3217 | |
b926417a | 3218 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3219 | const struct linetable_entry & lhs)->bool |
3220 | { | |
b926417a | 3221 | return comp_pc < lhs.pc; |
7cbe16e9 | 3222 | }; |
c906108c | 3223 | |
7cbe16e9 SR |
3224 | struct linetable_entry *first = item; |
3225 | struct linetable_entry *last = item + len; | |
3226 | item = std::upper_bound (first, last, pc, pc_compare); | |
3227 | if (item != first) | |
3228 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3229 | |
3230 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3231 | item points at the next line. If we ran off the end of the linetable |
3232 | (pc >= start of the last line), then prev == item. If pc < start of | |
3233 | the first line, prev will not be set. */ | |
c906108c SS |
3234 | |
3235 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3236 | If so, record this file, and its best line, as best so far. Don't |
3237 | save prev if it represents the end of a function (i.e. line number | |
3238 | 0) instead of a real line. */ | |
c906108c | 3239 | |
083ae935 | 3240 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3241 | { |
3242 | best = prev; | |
43f3e411 | 3243 | best_symtab = iter_s; |
25d53da1 KB |
3244 | |
3245 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3246 | if (best_end <= best->pc) | |
3247 | best_end = 0; | |
c906108c | 3248 | } |
25d53da1 KB |
3249 | |
3250 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3251 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3252 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3253 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3254 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3255 | best_end = item->pc; |
c906108c SS |
3256 | } |
3257 | ||
3258 | if (!best_symtab) | |
3259 | { | |
e86e87f7 DJ |
3260 | /* If we didn't find any line number info, just return zeros. |
3261 | We used to return alt->line - 1 here, but that could be | |
3262 | anywhere; if we don't have line number info for this PC, | |
3263 | don't make some up. */ | |
3264 | val.pc = pc; | |
c906108c | 3265 | } |
e8717518 FF |
3266 | else if (best->line == 0) |
3267 | { | |
3268 | /* If our best fit is in a range of PC's for which no line | |
3269 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3270 | find any valid line information. */ |
e8717518 FF |
3271 | val.pc = pc; |
3272 | } | |
c906108c SS |
3273 | else |
3274 | { | |
3275 | val.symtab = best_symtab; | |
3276 | val.line = best->line; | |
3277 | val.pc = best->pc; | |
3278 | if (best_end && (!alt || best_end < alt->pc)) | |
3279 | val.end = best_end; | |
3280 | else if (alt) | |
3281 | val.end = alt->pc; | |
3282 | else | |
3283 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3284 | } | |
3285 | val.section = section; | |
3286 | return val; | |
3287 | } | |
3288 | ||
c378eb4e | 3289 | /* Backward compatibility (no section). */ |
c906108c SS |
3290 | |
3291 | struct symtab_and_line | |
fba45db2 | 3292 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3293 | { |
714835d5 | 3294 | struct obj_section *section; |
c906108c SS |
3295 | |
3296 | section = find_pc_overlay (pc); | |
3297 | if (pc_in_unmapped_range (pc, section)) | |
3298 | pc = overlay_mapped_address (pc, section); | |
3299 | return find_pc_sect_line (pc, section, notcurrent); | |
3300 | } | |
34248c3a DE |
3301 | |
3302 | /* See symtab.h. */ | |
3303 | ||
3304 | struct symtab * | |
3305 | find_pc_line_symtab (CORE_ADDR pc) | |
3306 | { | |
3307 | struct symtab_and_line sal; | |
3308 | ||
3309 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3310 | There are currently no callers that ever pass non-zero. */ | |
3311 | sal = find_pc_line (pc, 0); | |
3312 | return sal.symtab; | |
3313 | } | |
c906108c | 3314 | \f |
c906108c SS |
3315 | /* Find line number LINE in any symtab whose name is the same as |
3316 | SYMTAB. | |
3317 | ||
3318 | If found, return the symtab that contains the linetable in which it was | |
3319 | found, set *INDEX to the index in the linetable of the best entry | |
3320 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3321 | exact match. | |
3322 | ||
3323 | If not found, return NULL. */ | |
3324 | ||
50641945 | 3325 | struct symtab * |
5accd1a0 | 3326 | find_line_symtab (struct symtab *sym_tab, int line, |
433759f7 | 3327 | int *index, int *exact_match) |
c906108c | 3328 | { |
6f43c46f | 3329 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3330 | |
3331 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3332 | so far seen. */ | |
3333 | ||
3334 | int best_index; | |
3335 | struct linetable *best_linetable; | |
3336 | struct symtab *best_symtab; | |
3337 | ||
3338 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3339 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3340 | best_symtab = sym_tab; | |
f8eba3c6 | 3341 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3342 | if (best_index < 0 || !exact) |
3343 | { | |
3344 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3345 | another symtab with the same name. In the case of xcoff, |
3346 | multiple csects for one source file (produced by IBM's FORTRAN | |
3347 | compiler) produce multiple symtabs (this is unavoidable | |
3348 | assuming csects can be at arbitrary places in memory and that | |
3349 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3350 | |
3351 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3352 | or 0 if none has been seen so far. |
3353 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3354 | int best; |
3355 | ||
c906108c SS |
3356 | if (best_index >= 0) |
3357 | best = best_linetable->item[best_index].line; | |
3358 | else | |
3359 | best = 0; | |
3360 | ||
2030c079 | 3361 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3362 | { |
3363 | if (objfile->sf) | |
3364 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3365 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3366 | } |
51432cca | 3367 | |
2030c079 | 3368 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3369 | { |
b669c953 | 3370 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3371 | { |
3372 | for (symtab *s : compunit_filetabs (cu)) | |
3373 | { | |
3374 | struct linetable *l; | |
3375 | int ind; | |
3376 | ||
3377 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3378 | continue; | |
3379 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3380 | symtab_to_fullname (s)) != 0) | |
3381 | continue; | |
3382 | l = SYMTAB_LINETABLE (s); | |
3383 | ind = find_line_common (l, line, &exact, 0); | |
3384 | if (ind >= 0) | |
3385 | { | |
3386 | if (exact) | |
3387 | { | |
3388 | best_index = ind; | |
3389 | best_linetable = l; | |
3390 | best_symtab = s; | |
3391 | goto done; | |
3392 | } | |
3393 | if (best == 0 || l->item[ind].line < best) | |
3394 | { | |
3395 | best = l->item[ind].line; | |
3396 | best_index = ind; | |
3397 | best_linetable = l; | |
3398 | best_symtab = s; | |
3399 | } | |
3400 | } | |
3401 | } | |
3402 | } | |
3403 | } | |
c906108c | 3404 | } |
c5aa993b | 3405 | done: |
c906108c SS |
3406 | if (best_index < 0) |
3407 | return NULL; | |
3408 | ||
3409 | if (index) | |
3410 | *index = best_index; | |
3411 | if (exact_match) | |
3412 | *exact_match = exact; | |
3413 | ||
3414 | return best_symtab; | |
3415 | } | |
f8eba3c6 TT |
3416 | |
3417 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3418 | exactly match LINE. Returns an empty vector if there are no exact |
3419 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3420 | |
67d89901 | 3421 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3422 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3423 | struct linetable_entry **best_item) | |
3424 | { | |
c656bca5 | 3425 | int start = 0; |
67d89901 | 3426 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3427 | |
3428 | /* First, collect all the PCs that are at this line. */ | |
3429 | while (1) | |
3430 | { | |
3431 | int was_exact; | |
3432 | int idx; | |
3433 | ||
8435453b DE |
3434 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3435 | start); | |
f8eba3c6 TT |
3436 | if (idx < 0) |
3437 | break; | |
3438 | ||
3439 | if (!was_exact) | |
3440 | { | |
8435453b | 3441 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3442 | |
3443 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3444 | *best_item = item; | |
3445 | ||
3446 | break; | |
3447 | } | |
3448 | ||
67d89901 | 3449 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3450 | start = idx + 1; |
3451 | } | |
3452 | ||
3453 | return result; | |
3454 | } | |
3455 | ||
c906108c SS |
3456 | \f |
3457 | /* Set the PC value for a given source file and line number and return true. | |
3458 | Returns zero for invalid line number (and sets the PC to 0). | |
3459 | The source file is specified with a struct symtab. */ | |
3460 | ||
3461 | int | |
fba45db2 | 3462 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3463 | { |
3464 | struct linetable *l; | |
3465 | int ind; | |
3466 | ||
3467 | *pc = 0; | |
3468 | if (symtab == 0) | |
3469 | return 0; | |
3470 | ||
3471 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3472 | if (symtab != NULL) | |
3473 | { | |
8435453b | 3474 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3475 | *pc = l->item[ind].pc; |
3476 | return 1; | |
3477 | } | |
3478 | else | |
3479 | return 0; | |
3480 | } | |
3481 | ||
3482 | /* Find the range of pc values in a line. | |
3483 | Store the starting pc of the line into *STARTPTR | |
3484 | and the ending pc (start of next line) into *ENDPTR. | |
3485 | Returns 1 to indicate success. | |
3486 | Returns 0 if could not find the specified line. */ | |
3487 | ||
3488 | int | |
fba45db2 KB |
3489 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3490 | CORE_ADDR *endptr) | |
c906108c SS |
3491 | { |
3492 | CORE_ADDR startaddr; | |
3493 | struct symtab_and_line found_sal; | |
3494 | ||
3495 | startaddr = sal.pc; | |
c5aa993b | 3496 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3497 | return 0; |
3498 | ||
3499 | /* This whole function is based on address. For example, if line 10 has | |
3500 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3501 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3502 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3503 | This also insures that we never give a range like "starts at 0x134 | |
3504 | and ends at 0x12c". */ | |
3505 | ||
3506 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3507 | if (found_sal.line != sal.line) | |
3508 | { | |
3509 | /* The specified line (sal) has zero bytes. */ | |
3510 | *startptr = found_sal.pc; | |
3511 | *endptr = found_sal.pc; | |
3512 | } | |
3513 | else | |
3514 | { | |
3515 | *startptr = found_sal.pc; | |
3516 | *endptr = found_sal.end; | |
3517 | } | |
3518 | return 1; | |
3519 | } | |
3520 | ||
3521 | /* Given a line table and a line number, return the index into the line | |
3522 | table for the pc of the nearest line whose number is >= the specified one. | |
3523 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3524 | START is the index at which to start searching the line table. |
c906108c SS |
3525 | |
3526 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3527 | ||
3528 | static int | |
aa1ee363 | 3529 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3530 | int *exact_match, int start) |
c906108c | 3531 | { |
52f0bd74 AC |
3532 | int i; |
3533 | int len; | |
c906108c SS |
3534 | |
3535 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3536 | or 0 if none has been seen so far. | |
3537 | BEST_INDEX identifies the item for it. */ | |
3538 | ||
3539 | int best_index = -1; | |
3540 | int best = 0; | |
3541 | ||
b7589f7d DJ |
3542 | *exact_match = 0; |
3543 | ||
c906108c SS |
3544 | if (lineno <= 0) |
3545 | return -1; | |
3546 | if (l == 0) | |
3547 | return -1; | |
3548 | ||
3549 | len = l->nitems; | |
f8eba3c6 | 3550 | for (i = start; i < len; i++) |
c906108c | 3551 | { |
aa1ee363 | 3552 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3553 | |
3554 | if (item->line == lineno) | |
3555 | { | |
3556 | /* Return the first (lowest address) entry which matches. */ | |
3557 | *exact_match = 1; | |
3558 | return i; | |
3559 | } | |
3560 | ||
3561 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3562 | { | |
3563 | best = item->line; | |
3564 | best_index = i; | |
3565 | } | |
3566 | } | |
3567 | ||
3568 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3569 | return best_index; |
3570 | } | |
3571 | ||
3572 | int | |
fba45db2 | 3573 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3574 | { |
3575 | struct symtab_and_line sal; | |
433759f7 | 3576 | |
c906108c SS |
3577 | sal = find_pc_line (pc, 0); |
3578 | *startptr = sal.pc; | |
3579 | *endptr = sal.end; | |
3580 | return sal.symtab != 0; | |
3581 | } | |
3582 | ||
cd2bb709 PA |
3583 | /* Helper for find_function_start_sal. Does most of the work, except |
3584 | setting the sal's symbol. */ | |
aab2f208 | 3585 | |
cd2bb709 PA |
3586 | static symtab_and_line |
3587 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3588 | bool funfirstline) | |
aab2f208 | 3589 | { |
42ddae10 | 3590 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3591 | |
6e22494e JK |
3592 | if (funfirstline && sal.symtab != NULL |
3593 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3594 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3595 | { | |
42ddae10 | 3596 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3597 | |
42ddae10 | 3598 | sal.pc = func_addr; |
141c5cc4 JK |
3599 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3600 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3601 | return sal; |
3602 | } | |
3603 | ||
aab2f208 | 3604 | /* We always should have a line for the function start address. |
42ddae10 | 3605 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3606 | just the PC and hope that skip_prologue_sal (if requested) |
3607 | can find a line number for after the prologue. */ | |
42ddae10 | 3608 | if (sal.pc < func_addr) |
aab2f208 | 3609 | { |
51abb421 | 3610 | sal = {}; |
aab2f208 | 3611 | sal.pspace = current_program_space; |
42ddae10 | 3612 | sal.pc = func_addr; |
08be3fe3 | 3613 | sal.section = section; |
aab2f208 DE |
3614 | } |
3615 | ||
3616 | if (funfirstline) | |
3617 | skip_prologue_sal (&sal); | |
3618 | ||
3619 | return sal; | |
3620 | } | |
3621 | ||
42ddae10 PA |
3622 | /* See symtab.h. */ |
3623 | ||
cd2bb709 PA |
3624 | symtab_and_line |
3625 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3626 | bool funfirstline) | |
3627 | { | |
3628 | symtab_and_line sal | |
3629 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3630 | ||
3631 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3632 | the symtab and linenumber, but not a symbol. Fill in the | |
3633 | function symbol too. */ | |
3634 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3635 | ||
3636 | return sal; | |
3637 | } | |
3638 | ||
3639 | /* See symtab.h. */ | |
3640 | ||
42ddae10 PA |
3641 | symtab_and_line |
3642 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3643 | { | |
3644 | fixup_symbol_section (sym, NULL); | |
3645 | symtab_and_line sal | |
2b1ffcfd | 3646 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3647 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3648 | funfirstline); | |
42ddae10 PA |
3649 | sal.symbol = sym; |
3650 | return sal; | |
3651 | } | |
3652 | ||
3653 | ||
8c7a1ee8 EZ |
3654 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3655 | address for that function that has an entry in SYMTAB's line info | |
3656 | table. If such an entry cannot be found, return FUNC_ADDR | |
3657 | unaltered. */ | |
eca864fe | 3658 | |
70221824 | 3659 | static CORE_ADDR |
8c7a1ee8 EZ |
3660 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3661 | { | |
3662 | CORE_ADDR func_start, func_end; | |
3663 | struct linetable *l; | |
952a6d41 | 3664 | int i; |
8c7a1ee8 EZ |
3665 | |
3666 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3667 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3668 | if (l == NULL) |
3669 | return func_addr; | |
3670 | ||
3671 | /* Get the range for the function's PC values, or give up if we | |
3672 | cannot, for some reason. */ | |
3673 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3674 | return func_addr; | |
3675 | ||
3676 | /* Linetable entries are ordered by PC values, see the commentary in | |
3677 | symtab.h where `struct linetable' is defined. Thus, the first | |
3678 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3679 | address we are looking for. */ | |
3680 | for (i = 0; i < l->nitems; i++) | |
3681 | { | |
3682 | struct linetable_entry *item = &(l->item[i]); | |
3683 | ||
3684 | /* Don't use line numbers of zero, they mark special entries in | |
3685 | the table. See the commentary on symtab.h before the | |
3686 | definition of struct linetable. */ | |
3687 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3688 | return item->pc; | |
3689 | } | |
3690 | ||
3691 | return func_addr; | |
3692 | } | |
3693 | ||
059acae7 UW |
3694 | /* Adjust SAL to the first instruction past the function prologue. |
3695 | If the PC was explicitly specified, the SAL is not changed. | |
3696 | If the line number was explicitly specified, at most the SAL's PC | |
3697 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3698 | |
059acae7 UW |
3699 | void |
3700 | skip_prologue_sal (struct symtab_and_line *sal) | |
3701 | { | |
3702 | struct symbol *sym; | |
3703 | struct symtab_and_line start_sal; | |
8be455d7 | 3704 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3705 | struct obj_section *section; |
3706 | const char *name; | |
3707 | struct objfile *objfile; | |
3708 | struct gdbarch *gdbarch; | |
3977b71f | 3709 | const struct block *b, *function_block; |
8be455d7 | 3710 | int force_skip, skip; |
c906108c | 3711 | |
a4b411d6 | 3712 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3713 | if (sal->explicit_pc) |
3714 | return; | |
6c95b8df | 3715 | |
5ed8105e PA |
3716 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3717 | ||
059acae7 | 3718 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3719 | |
059acae7 UW |
3720 | sym = find_pc_sect_function (sal->pc, sal->section); |
3721 | if (sym != NULL) | |
bccdca4a | 3722 | { |
059acae7 UW |
3723 | fixup_symbol_section (sym, NULL); |
3724 | ||
08be3fe3 | 3725 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3726 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3727 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3728 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3729 | } |
059acae7 UW |
3730 | else |
3731 | { | |
7c7b6655 TT |
3732 | struct bound_minimal_symbol msymbol |
3733 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3734 | |
7c7b6655 | 3735 | if (msymbol.minsym == NULL) |
5ed8105e | 3736 | return; |
059acae7 | 3737 | |
7c7b6655 | 3738 | objfile = msymbol.objfile; |
77e371c0 | 3739 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3740 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3741 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3742 | } |
3743 | ||
3744 | gdbarch = get_objfile_arch (objfile); | |
3745 | ||
8be455d7 JK |
3746 | /* Process the prologue in two passes. In the first pass try to skip the |
3747 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3748 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3749 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3750 | |
8be455d7 JK |
3751 | skip = 1; |
3752 | force_skip = 1; | |
059acae7 | 3753 | |
8be455d7 JK |
3754 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3755 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3756 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3757 | if (sym != NULL |
3758 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3759 | force_skip = 0; |
059acae7 | 3760 | |
8be455d7 JK |
3761 | saved_pc = pc; |
3762 | do | |
c906108c | 3763 | { |
8be455d7 | 3764 | pc = saved_pc; |
4309257c | 3765 | |
8be455d7 JK |
3766 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3767 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3768 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3769 | pc = overlay_unmapped_address (pc, section); | |
3770 | ||
3771 | /* Skip "first line" of function (which is actually its prologue). */ | |
3772 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3773 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3774 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3775 | if (skip) |
46a62268 | 3776 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3777 | |
3778 | /* For overlays, map pc back into its mapped VMA range. */ | |
3779 | pc = overlay_mapped_address (pc, section); | |
3780 | ||
3781 | /* Calculate line number. */ | |
059acae7 | 3782 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3783 | |
3784 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3785 | line is still part of the same function. */ | |
3786 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3787 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3788 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3789 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3790 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3791 | { |
3792 | /* First pc of next line */ | |
3793 | pc = start_sal.end; | |
3794 | /* Recalculate the line number (might not be N+1). */ | |
3795 | start_sal = find_pc_sect_line (pc, section, 0); | |
3796 | } | |
3797 | ||
3798 | /* On targets with executable formats that don't have a concept of | |
3799 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3800 | to `__main' in `main' between the prologue and before user | |
3801 | code. */ | |
3802 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3803 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3804 | { |
3805 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3806 | /* Recalculate the line number (might not be N+1). */ | |
3807 | start_sal = find_pc_sect_line (pc, section, 0); | |
3808 | force_skip = 1; | |
3809 | } | |
4309257c | 3810 | } |
8be455d7 | 3811 | while (!force_skip && skip--); |
4309257c | 3812 | |
8c7a1ee8 EZ |
3813 | /* If we still don't have a valid source line, try to find the first |
3814 | PC in the lineinfo table that belongs to the same function. This | |
3815 | happens with COFF debug info, which does not seem to have an | |
3816 | entry in lineinfo table for the code after the prologue which has | |
3817 | no direct relation to source. For example, this was found to be | |
3818 | the case with the DJGPP target using "gcc -gcoff" when the | |
3819 | compiler inserted code after the prologue to make sure the stack | |
3820 | is aligned. */ | |
8be455d7 | 3821 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3822 | { |
08be3fe3 | 3823 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3824 | /* Recalculate the line number. */ |
059acae7 | 3825 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3826 | } |
3827 | ||
059acae7 UW |
3828 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3829 | forward SAL to the end of the prologue. */ | |
3830 | if (sal->pc >= pc) | |
3831 | return; | |
3832 | ||
3833 | sal->pc = pc; | |
3834 | sal->section = section; | |
3835 | ||
3836 | /* Unless the explicit_line flag was set, update the SAL line | |
3837 | and symtab to correspond to the modified PC location. */ | |
3838 | if (sal->explicit_line) | |
3839 | return; | |
3840 | ||
3841 | sal->symtab = start_sal.symtab; | |
3842 | sal->line = start_sal.line; | |
3843 | sal->end = start_sal.end; | |
c906108c | 3844 | |
edb3359d DJ |
3845 | /* Check if we are now inside an inlined function. If we can, |
3846 | use the call site of the function instead. */ | |
059acae7 | 3847 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3848 | function_block = NULL; |
3849 | while (b != NULL) | |
3850 | { | |
3851 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3852 | function_block = b; | |
3853 | else if (BLOCK_FUNCTION (b) != NULL) | |
3854 | break; | |
3855 | b = BLOCK_SUPERBLOCK (b); | |
3856 | } | |
3857 | if (function_block != NULL | |
3858 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3859 | { | |
059acae7 | 3860 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3861 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3862 | } |
c906108c | 3863 | } |
50641945 | 3864 | |
f1f58506 DE |
3865 | /* Given PC at the function's start address, attempt to find the |
3866 | prologue end using SAL information. Return zero if the skip fails. | |
3867 | ||
3868 | A non-optimized prologue traditionally has one SAL for the function | |
3869 | and a second for the function body. A single line function has | |
3870 | them both pointing at the same line. | |
3871 | ||
3872 | An optimized prologue is similar but the prologue may contain | |
3873 | instructions (SALs) from the instruction body. Need to skip those | |
3874 | while not getting into the function body. | |
3875 | ||
3876 | The functions end point and an increasing SAL line are used as | |
3877 | indicators of the prologue's endpoint. | |
3878 | ||
3879 | This code is based on the function refine_prologue_limit | |
3880 | (found in ia64). */ | |
3881 | ||
3882 | CORE_ADDR | |
3883 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3884 | { | |
3885 | struct symtab_and_line prologue_sal; | |
3886 | CORE_ADDR start_pc; | |
3887 | CORE_ADDR end_pc; | |
3888 | const struct block *bl; | |
3889 | ||
3890 | /* Get an initial range for the function. */ | |
3891 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3892 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3893 | ||
3894 | prologue_sal = find_pc_line (start_pc, 0); | |
3895 | if (prologue_sal.line != 0) | |
3896 | { | |
3897 | /* For languages other than assembly, treat two consecutive line | |
3898 | entries at the same address as a zero-instruction prologue. | |
3899 | The GNU assembler emits separate line notes for each instruction | |
3900 | in a multi-instruction macro, but compilers generally will not | |
3901 | do this. */ | |
3902 | if (prologue_sal.symtab->language != language_asm) | |
3903 | { | |
8435453b | 3904 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3905 | int idx = 0; |
3906 | ||
3907 | /* Skip any earlier lines, and any end-of-sequence marker | |
3908 | from a previous function. */ | |
3909 | while (linetable->item[idx].pc != prologue_sal.pc | |
3910 | || linetable->item[idx].line == 0) | |
3911 | idx++; | |
3912 | ||
3913 | if (idx+1 < linetable->nitems | |
3914 | && linetable->item[idx+1].line != 0 | |
3915 | && linetable->item[idx+1].pc == start_pc) | |
3916 | return start_pc; | |
3917 | } | |
3918 | ||
3919 | /* If there is only one sal that covers the entire function, | |
3920 | then it is probably a single line function, like | |
3921 | "foo(){}". */ | |
3922 | if (prologue_sal.end >= end_pc) | |
3923 | return 0; | |
3924 | ||
3925 | while (prologue_sal.end < end_pc) | |
3926 | { | |
3927 | struct symtab_and_line sal; | |
3928 | ||
3929 | sal = find_pc_line (prologue_sal.end, 0); | |
3930 | if (sal.line == 0) | |
3931 | break; | |
3932 | /* Assume that a consecutive SAL for the same (or larger) | |
3933 | line mark the prologue -> body transition. */ | |
3934 | if (sal.line >= prologue_sal.line) | |
3935 | break; | |
3936 | /* Likewise if we are in a different symtab altogether | |
3937 | (e.g. within a file included via #include). */ | |
3938 | if (sal.symtab != prologue_sal.symtab) | |
3939 | break; | |
3940 | ||
3941 | /* The line number is smaller. Check that it's from the | |
3942 | same function, not something inlined. If it's inlined, | |
3943 | then there is no point comparing the line numbers. */ | |
3944 | bl = block_for_pc (prologue_sal.end); | |
3945 | while (bl) | |
3946 | { | |
3947 | if (block_inlined_p (bl)) | |
3948 | break; | |
3949 | if (BLOCK_FUNCTION (bl)) | |
3950 | { | |
3951 | bl = NULL; | |
3952 | break; | |
3953 | } | |
3954 | bl = BLOCK_SUPERBLOCK (bl); | |
3955 | } | |
3956 | if (bl != NULL) | |
3957 | break; | |
3958 | ||
3959 | /* The case in which compiler's optimizer/scheduler has | |
3960 | moved instructions into the prologue. We look ahead in | |
3961 | the function looking for address ranges whose | |
3962 | corresponding line number is less the first one that we | |
3963 | found for the function. This is more conservative then | |
3964 | refine_prologue_limit which scans a large number of SALs | |
3965 | looking for any in the prologue. */ | |
3966 | prologue_sal = sal; | |
3967 | } | |
3968 | } | |
3969 | ||
3970 | if (prologue_sal.end < end_pc) | |
3971 | /* Return the end of this line, or zero if we could not find a | |
3972 | line. */ | |
3973 | return prologue_sal.end; | |
3974 | else | |
3975 | /* Don't return END_PC, which is past the end of the function. */ | |
3976 | return prologue_sal.pc; | |
3977 | } | |
bf223d3e PA |
3978 | |
3979 | /* See symtab.h. */ | |
3980 | ||
3981 | symbol * | |
3982 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3983 | { | |
4024cf2b PA |
3984 | CORE_ADDR func_addr; |
3985 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3986 | return NULL; |
3987 | ||
4024cf2b | 3988 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3989 | if (sym != NULL |
3990 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3991 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3992 | return sym; |
3993 | ||
3994 | return NULL; | |
3995 | } | |
3996 | ||
f1f58506 | 3997 | \f |
c906108c SS |
3998 | /* If P is of the form "operator[ \t]+..." where `...' is |
3999 | some legitimate operator text, return a pointer to the | |
4000 | beginning of the substring of the operator text. | |
4001 | Otherwise, return "". */ | |
eca864fe | 4002 | |
96142726 TT |
4003 | static const char * |
4004 | operator_chars (const char *p, const char **end) | |
c906108c SS |
4005 | { |
4006 | *end = ""; | |
8090b426 | 4007 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 4008 | return *end; |
8090b426 | 4009 | p += CP_OPERATOR_LEN; |
c906108c SS |
4010 | |
4011 | /* Don't get faked out by `operator' being part of a longer | |
4012 | identifier. */ | |
c5aa993b | 4013 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4014 | return *end; |
4015 | ||
4016 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4017 | while (*p == ' ' || *p == '\t') | |
4018 | p++; | |
4019 | ||
c378eb4e | 4020 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4021 | |
c5aa993b | 4022 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4023 | { |
96142726 | 4024 | const char *q = p + 1; |
433759f7 | 4025 | |
c5aa993b | 4026 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4027 | q++; |
4028 | *end = q; | |
4029 | return p; | |
4030 | } | |
4031 | ||
53e8ad3d MS |
4032 | while (*p) |
4033 | switch (*p) | |
4034 | { | |
4035 | case '\\': /* regexp quoting */ | |
4036 | if (p[1] == '*') | |
4037 | { | |
3e43a32a | 4038 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4039 | *end = p + 3; |
4040 | else /* 'operator\*' */ | |
4041 | *end = p + 2; | |
4042 | return p; | |
4043 | } | |
4044 | else if (p[1] == '[') | |
4045 | { | |
4046 | if (p[2] == ']') | |
3e43a32a MS |
4047 | error (_("mismatched quoting on brackets, " |
4048 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4049 | else if (p[2] == '\\' && p[3] == ']') |
4050 | { | |
4051 | *end = p + 4; /* 'operator\[\]' */ | |
4052 | return p; | |
4053 | } | |
4054 | else | |
8a3fe4f8 | 4055 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4056 | } |
9af17804 | 4057 | else |
53e8ad3d | 4058 | { |
c378eb4e | 4059 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
4060 | p++; |
4061 | continue; | |
4062 | } | |
4063 | break; | |
4064 | case '!': | |
4065 | case '=': | |
4066 | case '*': | |
4067 | case '/': | |
4068 | case '%': | |
4069 | case '^': | |
4070 | if (p[1] == '=') | |
4071 | *end = p + 2; | |
4072 | else | |
4073 | *end = p + 1; | |
4074 | return p; | |
4075 | case '<': | |
4076 | case '>': | |
4077 | case '+': | |
4078 | case '-': | |
4079 | case '&': | |
4080 | case '|': | |
4081 | if (p[0] == '-' && p[1] == '>') | |
4082 | { | |
c378eb4e | 4083 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4084 | if (p[2] == '*') |
4085 | { | |
4086 | *end = p + 3; /* 'operator->*' */ | |
4087 | return p; | |
4088 | } | |
4089 | else if (p[2] == '\\') | |
4090 | { | |
4091 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4092 | return p; | |
4093 | } | |
4094 | else | |
4095 | { | |
4096 | *end = p + 2; /* 'operator->' */ | |
4097 | return p; | |
4098 | } | |
4099 | } | |
4100 | if (p[1] == '=' || p[1] == p[0]) | |
4101 | *end = p + 2; | |
4102 | else | |
4103 | *end = p + 1; | |
4104 | return p; | |
4105 | case '~': | |
4106 | case ',': | |
c5aa993b | 4107 | *end = p + 1; |
53e8ad3d MS |
4108 | return p; |
4109 | case '(': | |
4110 | if (p[1] != ')') | |
3e43a32a MS |
4111 | error (_("`operator ()' must be specified " |
4112 | "without whitespace in `()'")); | |
c5aa993b | 4113 | *end = p + 2; |
53e8ad3d MS |
4114 | return p; |
4115 | case '?': | |
4116 | if (p[1] != ':') | |
3e43a32a MS |
4117 | error (_("`operator ?:' must be specified " |
4118 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4119 | *end = p + 2; |
4120 | return p; | |
4121 | case '[': | |
4122 | if (p[1] != ']') | |
3e43a32a MS |
4123 | error (_("`operator []' must be specified " |
4124 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4125 | *end = p + 2; |
4126 | return p; | |
4127 | default: | |
8a3fe4f8 | 4128 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4129 | break; |
4130 | } | |
4131 | ||
c906108c SS |
4132 | *end = ""; |
4133 | return *end; | |
4134 | } | |
c906108c | 4135 | \f |
c5aa993b | 4136 | |
9fdc877b DE |
4137 | /* Data structure to maintain printing state for output_source_filename. */ |
4138 | ||
4139 | struct output_source_filename_data | |
4140 | { | |
4141 | /* Cache of what we've seen so far. */ | |
4142 | struct filename_seen_cache *filename_seen_cache; | |
4143 | ||
4144 | /* Flag of whether we're printing the first one. */ | |
4145 | int first; | |
4146 | }; | |
4147 | ||
c94fdfd0 | 4148 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4149 | NAME is the name to print. |
4150 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4151 | |
c94fdfd0 | 4152 | static void |
9fdc877b DE |
4153 | output_source_filename (const char *name, |
4154 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4155 | { |
4156 | /* Since a single source file can result in several partial symbol | |
4157 | tables, we need to avoid printing it more than once. Note: if | |
4158 | some of the psymtabs are read in and some are not, it gets | |
4159 | printed both under "Source files for which symbols have been | |
4160 | read" and "Source files for which symbols will be read in on | |
4161 | demand". I consider this a reasonable way to deal with the | |
4162 | situation. I'm not sure whether this can also happen for | |
4163 | symtabs; it doesn't hurt to check. */ | |
4164 | ||
4165 | /* Was NAME already seen? */ | |
bbf2f4df | 4166 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4167 | { |
4168 | /* Yes; don't print it again. */ | |
4169 | return; | |
4170 | } | |
9fdc877b | 4171 | |
c94fdfd0 | 4172 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
4173 | if (! data->first) |
4174 | printf_filtered (", "); | |
4175 | data->first = 0; | |
c906108c SS |
4176 | |
4177 | wrap_here (""); | |
1ed9f74e | 4178 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4179 | } |
c906108c | 4180 | |
ccefe4c4 | 4181 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4182 | |
ccefe4c4 | 4183 | static void |
533a737e | 4184 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4185 | void *data) |
4186 | { | |
19ba03f4 SM |
4187 | output_source_filename (fullname ? fullname : filename, |
4188 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4189 | } |
4190 | ||
c906108c | 4191 | static void |
1d12d88f | 4192 | info_sources_command (const char *ignore, int from_tty) |
c906108c | 4193 | { |
9fdc877b | 4194 | struct output_source_filename_data data; |
c5aa993b | 4195 | |
c906108c SS |
4196 | if (!have_full_symbols () && !have_partial_symbols ()) |
4197 | { | |
8a3fe4f8 | 4198 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4199 | } |
c5aa993b | 4200 | |
bbf2f4df PA |
4201 | filename_seen_cache filenames_seen; |
4202 | ||
4203 | data.filename_seen_cache = &filenames_seen; | |
9fdc877b | 4204 | |
c906108c SS |
4205 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
4206 | ||
9fdc877b | 4207 | data.first = 1; |
2030c079 | 4208 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4209 | { |
b669c953 | 4210 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4211 | { |
4212 | for (symtab *s : compunit_filetabs (cu)) | |
4213 | { | |
4214 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4215 | |
8b31193a TT |
4216 | output_source_filename (fullname, &data); |
4217 | } | |
4218 | } | |
4219 | } | |
c906108c | 4220 | printf_filtered ("\n\n"); |
c5aa993b | 4221 | |
3e43a32a MS |
4222 | printf_filtered ("Source files for which symbols " |
4223 | "will be read in on demand:\n\n"); | |
c906108c | 4224 | |
bbf2f4df | 4225 | filenames_seen.clear (); |
9fdc877b | 4226 | data.first = 1; |
bb4142cf DE |
4227 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4228 | 1 /*need_fullname*/); | |
c906108c SS |
4229 | printf_filtered ("\n"); |
4230 | } | |
4231 | ||
fbd9ab74 JK |
4232 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4233 | non-zero compare only lbasename of FILES. */ | |
4234 | ||
c906108c | 4235 | static int |
96142726 | 4236 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4237 | { |
4238 | int i; | |
4239 | ||
4240 | if (file != NULL && nfiles != 0) | |
4241 | { | |
4242 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4243 | { |
fbd9ab74 JK |
4244 | if (compare_filenames_for_search (file, (basenames |
4245 | ? lbasename (files[i]) | |
4246 | : files[i]))) | |
c5aa993b JM |
4247 | return 1; |
4248 | } | |
c906108c SS |
4249 | } |
4250 | else if (nfiles == 0) | |
4251 | return 1; | |
4252 | return 0; | |
4253 | } | |
4254 | ||
b52109bc | 4255 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4256 | sort symbols, not minimal symbols. */ |
eca864fe | 4257 | |
b9c04fb2 TT |
4258 | int |
4259 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4260 | const symbol_search &sym_b) | |
434d2d4f | 4261 | { |
b52109bc DE |
4262 | int c; |
4263 | ||
b9c04fb2 TT |
4264 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4265 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4266 | if (c != 0) |
4267 | return c; | |
434d2d4f | 4268 | |
b9c04fb2 TT |
4269 | if (sym_a.block != sym_b.block) |
4270 | return sym_a.block - sym_b.block; | |
b52109bc | 4271 | |
b9c04fb2 TT |
4272 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4273 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4274 | } |
4275 | ||
12615cba PW |
4276 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4277 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4278 | ||
4279 | bool | |
4280 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4281 | const struct symbol *sym) | |
4282 | { | |
4283 | struct type *sym_type; | |
4284 | std::string printed_sym_type_name; | |
4285 | ||
4286 | if (symbol_lookup_debug > 1) | |
4287 | { | |
4288 | fprintf_unfiltered (gdb_stdlog, | |
4289 | "treg_matches_sym_type_name\n sym %s\n", | |
4290 | SYMBOL_NATURAL_NAME (sym)); | |
4291 | } | |
4292 | ||
4293 | sym_type = SYMBOL_TYPE (sym); | |
4294 | if (sym_type == NULL) | |
4295 | return false; | |
4296 | ||
43d397ca PW |
4297 | { |
4298 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4299 | |
12615cba | 4300 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4301 | } |
4302 | ||
12615cba PW |
4303 | |
4304 | if (symbol_lookup_debug > 1) | |
4305 | { | |
4306 | fprintf_unfiltered (gdb_stdlog, | |
4307 | " sym_type_name %s\n", | |
4308 | printed_sym_type_name.c_str ()); | |
4309 | } | |
4310 | ||
4311 | ||
4312 | if (printed_sym_type_name.empty ()) | |
4313 | return false; | |
4314 | ||
4315 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4316 | } | |
4317 | ||
4318 | ||
b9c04fb2 | 4319 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4320 | |
4321 | static void | |
b9c04fb2 | 4322 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4323 | { |
b9c04fb2 TT |
4324 | std::sort (result->begin (), result->end ()); |
4325 | result->erase (std::unique (result->begin (), result->end ()), | |
4326 | result->end ()); | |
434d2d4f | 4327 | } |
5bd98722 | 4328 | |
c906108c | 4329 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4330 | returning the results. |
c906108c SS |
4331 | |
4332 | Only symbols of KIND are searched: | |
e8930875 | 4333 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4334 | and constants (enums). |
4335 | if T_REGEXP is not NULL, only returns var that have | |
4336 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4337 | FUNCTIONS_DOMAIN - search all functions |
4338 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4339 | ALL_DOMAIN - an internal error for this function |
c906108c | 4340 | |
b52109bc DE |
4341 | Within each file the results are sorted locally; each symtab's global and |
4342 | static blocks are separately alphabetized. | |
4343 | Duplicate entries are removed. */ | |
c378eb4e | 4344 | |
b9c04fb2 | 4345 | std::vector<symbol_search> |
96142726 | 4346 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4347 | const char *t_regexp, |
b9c04fb2 | 4348 | int nfiles, const char *files[]) |
c906108c | 4349 | { |
346d1dfe | 4350 | const struct blockvector *bv; |
582942f4 | 4351 | const struct block *b; |
52f0bd74 | 4352 | int i = 0; |
8157b174 | 4353 | struct block_iterator iter; |
52f0bd74 | 4354 | struct symbol *sym; |
c906108c | 4355 | int found_misc = 0; |
bc043ef3 | 4356 | static const enum minimal_symbol_type types[] |
e8930875 | 4357 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 4358 | static const enum minimal_symbol_type types2[] |
e8930875 | 4359 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 4360 | static const enum minimal_symbol_type types3[] |
e8930875 | 4361 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 4362 | static const enum minimal_symbol_type types4[] |
e8930875 | 4363 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
4364 | enum minimal_symbol_type ourtype; |
4365 | enum minimal_symbol_type ourtype2; | |
4366 | enum minimal_symbol_type ourtype3; | |
4367 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4368 | std::vector<symbol_search> result; |
2d7cc5c7 | 4369 | gdb::optional<compiled_regex> preg; |
12615cba | 4370 | gdb::optional<compiled_regex> treg; |
c906108c | 4371 | |
e8930875 JK |
4372 | gdb_assert (kind <= TYPES_DOMAIN); |
4373 | ||
8903c50d TT |
4374 | ourtype = types[kind]; |
4375 | ourtype2 = types2[kind]; | |
4376 | ourtype3 = types3[kind]; | |
4377 | ourtype4 = types4[kind]; | |
c906108c | 4378 | |
c906108c SS |
4379 | if (regexp != NULL) |
4380 | { | |
4381 | /* Make sure spacing is right for C++ operators. | |
4382 | This is just a courtesy to make the matching less sensitive | |
4383 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4384 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4385 | const char *opend; |
4386 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4387 | |
c906108c | 4388 | if (*opname) |
c5aa993b | 4389 | { |
3e43a32a MS |
4390 | int fix = -1; /* -1 means ok; otherwise number of |
4391 | spaces needed. */ | |
433759f7 | 4392 | |
c5aa993b JM |
4393 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4394 | { | |
c378eb4e | 4395 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4396 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4397 | fix = 1; | |
4398 | } | |
4399 | else | |
4400 | { | |
c378eb4e | 4401 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4402 | if (opname[-1] == ' ') |
4403 | fix = 0; | |
4404 | } | |
c378eb4e | 4405 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4406 | if (fix >= 0) |
4407 | { | |
045f55a6 | 4408 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4409 | |
c5aa993b JM |
4410 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4411 | regexp = tmp; | |
4412 | } | |
4413 | } | |
4414 | ||
2d7cc5c7 PA |
4415 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4416 | ? REG_ICASE : 0); | |
4417 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4418 | } |
4419 | ||
12615cba PW |
4420 | if (t_regexp != NULL) |
4421 | { | |
4422 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4423 | ? REG_ICASE : 0); | |
4424 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4425 | } | |
4426 | ||
c906108c SS |
4427 | /* Search through the partial symtabs *first* for all symbols |
4428 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4429 | the machinery below. */ |
14bc53a8 PA |
4430 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4431 | { | |
4432 | return file_matches (filename, files, nfiles, | |
4433 | basenames); | |
4434 | }, | |
b5ec771e | 4435 | lookup_name_info::match_any (), |
14bc53a8 PA |
4436 | [&] (const char *symname) |
4437 | { | |
12615cba PW |
4438 | return (!preg.has_value () |
4439 | || preg->exec (symname, | |
4440 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4441 | }, |
4442 | NULL, | |
4443 | kind); | |
c906108c SS |
4444 | |
4445 | /* Here, we search through the minimal symbol tables for functions | |
4446 | and variables that match, and force their symbols to be read. | |
4447 | This is in particular necessary for demangled variable names, | |
4448 | which are no longer put into the partial symbol tables. | |
4449 | The symbol will then be found during the scan of symtabs below. | |
4450 | ||
4451 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4452 | for the function, for variables we have to call |
4453 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4454 | has debug info. | |
c906108c | 4455 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4456 | any matching symbols without debug info. |
4457 | We only search the objfile the msymbol came from, we no longer search | |
4458 | all objfiles. In large programs (1000s of shared libs) searching all | |
4459 | objfiles is not worth the pain. */ | |
c906108c | 4460 | |
176620f1 | 4461 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4462 | { |
2030c079 | 4463 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4464 | { |
7932255d | 4465 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4466 | { |
4467 | QUIT; | |
89295b4d | 4468 | |
5325b9bf TT |
4469 | if (msymbol->created_by_gdb) |
4470 | continue; | |
422d65e7 | 4471 | |
5325b9bf TT |
4472 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4473 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4474 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4475 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4476 | { | |
4477 | if (!preg.has_value () | |
4478 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4479 | NULL, 0) == 0) | |
4480 | { | |
4481 | /* Note: An important side-effect of these | |
4482 | lookup functions is to expand the symbol | |
4483 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4484 | the next loop on compunits. */ |
5325b9bf TT |
4485 | if (kind == FUNCTIONS_DOMAIN |
4486 | ? (find_pc_compunit_symtab | |
4487 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4488 | == NULL) | |
4489 | : (lookup_symbol_in_objfile_from_linkage_name | |
4490 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4491 | VAR_DOMAIN) | |
4492 | .symbol == NULL)) | |
4493 | found_misc = 1; | |
4494 | } | |
4495 | } | |
4496 | } | |
4497 | } | |
c906108c SS |
4498 | } |
4499 | ||
2030c079 | 4500 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4501 | { |
b669c953 | 4502 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4503 | { |
4504 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4505 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4506 | { | |
4507 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4508 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4509 | { | |
4510 | struct symtab *real_symtab = symbol_symtab (sym); | |
4511 | ||
4512 | QUIT; | |
4513 | ||
4514 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4515 | not need to be a substring of symtab_to_fullname as | |
4516 | it may contain "./" etc. */ | |
4517 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4518 | || ((basenames_may_differ | |
4519 | || file_matches (lbasename (real_symtab->filename), | |
4520 | files, nfiles, 1)) | |
4521 | && file_matches (symtab_to_fullname (real_symtab), | |
4522 | files, nfiles, 0))) | |
4523 | && ((!preg.has_value () | |
4524 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4525 | NULL, 0) == 0) | |
4526 | && ((kind == VARIABLES_DOMAIN | |
4527 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4528 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4529 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4530 | /* LOC_CONST can be used for more than | |
4531 | just enums, e.g., c++ static const | |
4532 | members. We only want to skip enums | |
4533 | here. */ | |
4534 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4535 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4536 | == TYPE_CODE_ENUM)) | |
4537 | && (!treg.has_value () | |
4538 | || treg_matches_sym_type_name (*treg, sym))) | |
4539 | || (kind == FUNCTIONS_DOMAIN | |
4540 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4541 | && (!treg.has_value () | |
4542 | || treg_matches_sym_type_name (*treg, | |
4543 | sym))) | |
4544 | || (kind == TYPES_DOMAIN | |
4545 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4546 | { | |
4547 | /* match */ | |
4548 | result.emplace_back (i, sym); | |
4549 | } | |
4550 | } | |
4551 | } | |
4552 | } | |
4553 | } | |
c906108c | 4554 | |
b9c04fb2 TT |
4555 | if (!result.empty ()) |
4556 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4557 | |
c906108c | 4558 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4559 | no debug symbols, then add matching minsyms. But if the user wants |
4560 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4561 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4562 | |
a8462bbf PW |
4563 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4564 | && !treg.has_value ()) | |
c906108c | 4565 | { |
2030c079 | 4566 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4567 | { |
7932255d | 4568 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4569 | { |
4570 | QUIT; | |
89295b4d | 4571 | |
5325b9bf TT |
4572 | if (msymbol->created_by_gdb) |
4573 | continue; | |
422d65e7 | 4574 | |
5325b9bf TT |
4575 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4576 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4577 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4578 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4579 | { | |
4580 | if (!preg.has_value () | |
4581 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4582 | NULL, 0) == 0) | |
4583 | { | |
4584 | /* For functions we can do a quick check of whether the | |
4585 | symbol might be found via find_pc_symtab. */ | |
4586 | if (kind != FUNCTIONS_DOMAIN | |
4587 | || (find_pc_compunit_symtab | |
4588 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4589 | == NULL)) | |
4590 | { | |
4591 | if (lookup_symbol_in_objfile_from_linkage_name | |
4592 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4593 | VAR_DOMAIN) | |
4594 | .symbol == NULL) | |
4595 | { | |
4596 | /* match */ | |
4597 | result.emplace_back (i, msymbol, objfile); | |
4598 | } | |
4599 | } | |
4600 | } | |
4601 | } | |
4602 | } | |
4603 | } | |
c906108c SS |
4604 | } |
4605 | ||
b9c04fb2 | 4606 | return result; |
c906108c SS |
4607 | } |
4608 | ||
4609 | /* Helper function for symtab_symbol_info, this function uses | |
4610 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4611 | regarding the match to gdb_stdout. If LAST is not NULL, |
4612 | print file and line number information for the symbol as | |
4613 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4614 | |
c906108c | 4615 | static void |
8903c50d | 4616 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4617 | struct symbol *sym, |
05cba821 | 4618 | int block, const char *last) |
c906108c | 4619 | { |
43d397ca | 4620 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4621 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4622 | |
c7dcbf88 | 4623 | if (last != NULL) |
c906108c | 4624 | { |
c7dcbf88 | 4625 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4626 | |
c7dcbf88 AA |
4627 | if (filename_cmp (last, s_filename) != 0) |
4628 | { | |
4629 | fputs_filtered ("\nFile ", gdb_stdout); | |
1ed9f74e | 4630 | fputs_styled (s_filename, file_name_style.style (), gdb_stdout); |
c7dcbf88 AA |
4631 | fputs_filtered (":\n", gdb_stdout); |
4632 | } | |
4633 | ||
4634 | if (SYMBOL_LINE (sym) != 0) | |
4635 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4636 | else | |
4637 | puts_filtered ("\t"); | |
4638 | } | |
b744723f | 4639 | |
176620f1 | 4640 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4641 | printf_filtered ("static "); |
c5aa993b | 4642 | |
c378eb4e | 4643 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4644 | if (kind == TYPES_DOMAIN |
4645 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 4646 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4647 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4648 | else if (kind < TYPES_DOMAIN |
4649 | || (kind == TYPES_DOMAIN | |
4650 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4651 | { |
4652 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4653 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4654 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4655 | gdb_stdout, 0); |
c906108c SS |
4656 | |
4657 | printf_filtered (";\n"); | |
4658 | } | |
c906108c SS |
4659 | } |
4660 | ||
4661 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4662 | for non-debugging symbols to gdb_stdout. */ |
4663 | ||
c906108c | 4664 | static void |
7c7b6655 | 4665 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4666 | { |
7c7b6655 | 4667 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4668 | char *tmp; |
4669 | ||
d80b854b | 4670 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4671 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4672 | & (CORE_ADDR) 0xffffffff, |
4673 | 8); | |
3ac4495a | 4674 | else |
77e371c0 | 4675 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4676 | 16); |
1ed9f74e PW |
4677 | fputs_styled (tmp, address_style.style (), gdb_stdout); |
4678 | fputs_filtered (" ", gdb_stdout); | |
4679 | if (msymbol.minsym->text_p ()) | |
4680 | fputs_styled (MSYMBOL_PRINT_NAME (msymbol.minsym), | |
4681 | function_name_style.style (), | |
4682 | gdb_stdout); | |
4683 | else | |
4684 | fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), gdb_stdout); | |
4685 | fputs_filtered ("\n", gdb_stdout); | |
c906108c SS |
4686 | } |
4687 | ||
4688 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4689 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4690 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4691 | matches. */ |
4692 | ||
c906108c | 4693 | static void |
12615cba PW |
4694 | symtab_symbol_info (bool quiet, |
4695 | const char *regexp, enum search_domain kind, | |
4696 | const char *t_regexp, int from_tty) | |
c906108c | 4697 | { |
bc043ef3 | 4698 | static const char * const classnames[] = |
e8930875 | 4699 | {"variable", "function", "type"}; |
c7dcbf88 | 4700 | const char *last_filename = ""; |
c906108c SS |
4701 | int first = 1; |
4702 | ||
e8930875 JK |
4703 | gdb_assert (kind <= TYPES_DOMAIN); |
4704 | ||
c378eb4e | 4705 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba PW |
4706 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4707 | t_regexp, 0, NULL); | |
c906108c | 4708 | |
12615cba PW |
4709 | if (!quiet) |
4710 | { | |
4711 | if (regexp != NULL) | |
4712 | { | |
4713 | if (t_regexp != NULL) | |
4714 | printf_filtered | |
4715 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 4716 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
4717 | classnames[kind], regexp, t_regexp); |
4718 | else | |
4719 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4720 | classnames[kind], regexp); | |
4721 | } | |
4722 | else | |
4723 | { | |
4724 | if (t_regexp != NULL) | |
4725 | printf_filtered | |
4726 | (_("All defined %ss" | |
0c95f9ed | 4727 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
4728 | classnames[kind], t_regexp); |
4729 | else | |
4730 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4731 | } | |
4732 | } | |
c906108c | 4733 | |
b9c04fb2 | 4734 | for (const symbol_search &p : symbols) |
c906108c SS |
4735 | { |
4736 | QUIT; | |
4737 | ||
b9c04fb2 | 4738 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4739 | { |
4740 | if (first) | |
4741 | { | |
12615cba PW |
4742 | if (!quiet) |
4743 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4744 | first = 0; |
4745 | } | |
b9c04fb2 | 4746 | print_msymbol_info (p.msymbol); |
c5aa993b | 4747 | } |
c906108c | 4748 | else |
c5aa993b JM |
4749 | { |
4750 | print_symbol_info (kind, | |
b9c04fb2 TT |
4751 | p.symbol, |
4752 | p.block, | |
c5aa993b | 4753 | last_filename); |
d01060f0 | 4754 | last_filename |
b9c04fb2 | 4755 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4756 | } |
c906108c | 4757 | } |
c906108c SS |
4758 | } |
4759 | ||
0b39b52e | 4760 | static void |
12615cba | 4761 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4762 | { |
12615cba PW |
4763 | std::string regexp; |
4764 | std::string t_regexp; | |
4765 | bool quiet = false; | |
4766 | ||
4767 | while (args != NULL | |
4768 | && extract_info_print_args (&args, &quiet, ®exp, &t_regexp)) | |
4769 | ; | |
4770 | ||
4771 | if (args != NULL) | |
4772 | report_unrecognized_option_error ("info variables", args); | |
4773 | ||
4774 | symtab_symbol_info (quiet, | |
4775 | regexp.empty () ? NULL : regexp.c_str (), | |
4776 | VARIABLES_DOMAIN, | |
4777 | t_regexp.empty () ? NULL : t_regexp.c_str (), | |
4778 | from_tty); | |
0b39b52e TT |
4779 | } |
4780 | ||
12615cba | 4781 | |
c906108c | 4782 | static void |
12615cba | 4783 | info_functions_command (const char *args, int from_tty) |
c906108c | 4784 | { |
12615cba PW |
4785 | std::string regexp; |
4786 | std::string t_regexp; | |
d54cfd76 | 4787 | bool quiet = false; |
12615cba PW |
4788 | |
4789 | while (args != NULL | |
4790 | && extract_info_print_args (&args, &quiet, ®exp, &t_regexp)) | |
4791 | ; | |
4792 | ||
4793 | if (args != NULL) | |
4794 | report_unrecognized_option_error ("info functions", args); | |
4795 | ||
4796 | symtab_symbol_info (quiet, | |
4797 | regexp.empty () ? NULL : regexp.c_str (), | |
4798 | FUNCTIONS_DOMAIN, | |
4799 | t_regexp.empty () ? NULL : t_regexp.c_str (), | |
4800 | from_tty); | |
c906108c SS |
4801 | } |
4802 | ||
357e46e7 | 4803 | |
c906108c | 4804 | static void |
1d12d88f | 4805 | info_types_command (const char *regexp, int from_tty) |
c906108c | 4806 | { |
12615cba | 4807 | symtab_symbol_info (false, regexp, TYPES_DOMAIN, NULL, from_tty); |
c906108c SS |
4808 | } |
4809 | ||
c378eb4e | 4810 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4811 | |
8b93c638 | 4812 | void |
fba45db2 | 4813 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4814 | { |
4815 | rbreak_command (regexp, from_tty); | |
4816 | } | |
8926118c | 4817 | |
c906108c | 4818 | static void |
0b39b52e | 4819 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 4820 | { |
c80049d3 | 4821 | std::string string; |
96142726 TT |
4822 | const char **files = NULL; |
4823 | const char *file_name; | |
8bd10a10 | 4824 | int nfiles = 0; |
c906108c | 4825 | |
8bd10a10 CM |
4826 | if (regexp) |
4827 | { | |
0b39b52e | 4828 | const char *colon = strchr (regexp, ':'); |
433759f7 | 4829 | |
8bd10a10 CM |
4830 | if (colon && *(colon + 1) != ':') |
4831 | { | |
4832 | int colon_index; | |
96142726 | 4833 | char *local_name; |
8bd10a10 CM |
4834 | |
4835 | colon_index = colon - regexp; | |
224c3ddb | 4836 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
4837 | memcpy (local_name, regexp, colon_index); |
4838 | local_name[colon_index--] = 0; | |
4839 | while (isspace (local_name[colon_index])) | |
4840 | local_name[colon_index--] = 0; | |
4841 | file_name = local_name; | |
8bd10a10 CM |
4842 | files = &file_name; |
4843 | nfiles = 1; | |
529480d0 | 4844 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4845 | } |
4846 | } | |
4847 | ||
b9c04fb2 TT |
4848 | std::vector<symbol_search> symbols = search_symbols (regexp, |
4849 | FUNCTIONS_DOMAIN, | |
12615cba | 4850 | NULL, |
b9c04fb2 | 4851 | nfiles, files); |
c906108c | 4852 | |
c80049d3 | 4853 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 4854 | for (const symbol_search &p : symbols) |
c906108c | 4855 | { |
b9c04fb2 | 4856 | if (p.msymbol.minsym == NULL) |
c5aa993b | 4857 | { |
b9c04fb2 | 4858 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 4859 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 4860 | |
c80049d3 TT |
4861 | string = string_printf ("%s:'%s'", fullname, |
4862 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
4863 | break_command (&string[0], from_tty); | |
c7dcbf88 | 4864 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 4865 | } |
c906108c | 4866 | else |
c5aa993b | 4867 | { |
c80049d3 TT |
4868 | string = string_printf ("'%s'", |
4869 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 4870 | |
c80049d3 | 4871 | break_command (&string[0], from_tty); |
c5aa993b | 4872 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 4873 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 4874 | } |
c906108c | 4875 | } |
c906108c | 4876 | } |
c906108c | 4877 | \f |
c5aa993b | 4878 | |
c62446b1 | 4879 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
4880 | |
4881 | static int | |
c62446b1 | 4882 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 4883 | const lookup_name_info &lookup_name, |
b5ec771e PA |
4884 | completion_match_result &match_res) |
4885 | { | |
d4c2a405 | 4886 | const language_defn *lang = language_def (symbol_language); |
1976171a | 4887 | |
b5ec771e | 4888 | symbol_name_matcher_ftype *name_match |
618daa93 | 4889 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 4890 | |
a207cff2 | 4891 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
4892 | } |
4893 | ||
b5ec771e | 4894 | /* See symtab.h. */ |
c906108c | 4895 | |
b5ec771e | 4896 | void |
eb3ff9a5 | 4897 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 4898 | language symbol_language, |
eb3ff9a5 | 4899 | const char *symname, |
b5ec771e | 4900 | const lookup_name_info &lookup_name, |
0d5cff50 | 4901 | const char *text, const char *word) |
c906108c | 4902 | { |
b5ec771e PA |
4903 | completion_match_result &match_res |
4904 | = tracker.reset_completion_match_result (); | |
4905 | ||
c378eb4e | 4906 | /* Clip symbols that cannot match. */ |
c62446b1 | 4907 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 4908 | return; |
c906108c | 4909 | |
b5ec771e PA |
4910 | /* Refresh SYMNAME from the match string. It's potentially |
4911 | different depending on language. (E.g., on Ada, the match may be | |
4912 | the encoded symbol name wrapped in "<>"). */ | |
4913 | symname = match_res.match.match (); | |
4914 | gdb_assert (symname != NULL); | |
4915 | ||
c906108c | 4916 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4917 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4918 | |
4919 | { | |
60a20c19 PA |
4920 | gdb::unique_xmalloc_ptr<char> completion |
4921 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 4922 | |
a207cff2 PA |
4923 | /* Here we pass the match-for-lcd object to add_completion. Some |
4924 | languages match the user text against substrings of symbol | |
4925 | names in some cases. E.g., in C++, "b push_ba" completes to | |
4926 | "std::vector::push_back", "std::string::push_back", etc., and | |
4927 | in this case we want the completion lowest common denominator | |
4928 | to be "push_back" instead of "std::". */ | |
4929 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 4930 | &match_res.match_for_lcd, text, word); |
c906108c SS |
4931 | } |
4932 | } | |
4933 | ||
6da67eb1 PA |
4934 | /* completion_list_add_name wrapper for struct symbol. */ |
4935 | ||
4936 | static void | |
eb3ff9a5 PA |
4937 | completion_list_add_symbol (completion_tracker &tracker, |
4938 | symbol *sym, | |
b5ec771e | 4939 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4940 | const char *text, const char *word) |
4941 | { | |
b5ec771e PA |
4942 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
4943 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4944 | lookup_name, text, word); |
6da67eb1 PA |
4945 | } |
4946 | ||
4947 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
4948 | ||
4949 | static void | |
eb3ff9a5 PA |
4950 | completion_list_add_msymbol (completion_tracker &tracker, |
4951 | minimal_symbol *sym, | |
b5ec771e | 4952 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4953 | const char *text, const char *word) |
4954 | { | |
b5ec771e PA |
4955 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
4956 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4957 | lookup_name, text, word); |
6da67eb1 PA |
4958 | } |
4959 | ||
b5ec771e | 4960 | |
69636828 AF |
4961 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4962 | again and feed all the selectors into the mill. */ | |
4963 | ||
4964 | static void | |
eb3ff9a5 PA |
4965 | completion_list_objc_symbol (completion_tracker &tracker, |
4966 | struct minimal_symbol *msymbol, | |
b5ec771e | 4967 | const lookup_name_info &lookup_name, |
0d5cff50 | 4968 | const char *text, const char *word) |
69636828 AF |
4969 | { |
4970 | static char *tmp = NULL; | |
4971 | static unsigned int tmplen = 0; | |
9af17804 | 4972 | |
0d5cff50 | 4973 | const char *method, *category, *selector; |
69636828 | 4974 | char *tmp2 = NULL; |
9af17804 | 4975 | |
efd66ac6 | 4976 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
4977 | |
4978 | /* Is it a method? */ | |
4979 | if ((method[0] != '-') && (method[0] != '+')) | |
4980 | return; | |
4981 | ||
1b026119 | 4982 | if (text[0] == '[') |
69636828 | 4983 | /* Complete on shortened method method. */ |
b5ec771e PA |
4984 | completion_list_add_name (tracker, language_objc, |
4985 | method + 1, | |
4986 | lookup_name, | |
1b026119 | 4987 | text, word); |
9af17804 | 4988 | |
69636828 AF |
4989 | while ((strlen (method) + 1) >= tmplen) |
4990 | { | |
4991 | if (tmplen == 0) | |
4992 | tmplen = 1024; | |
4993 | else | |
4994 | tmplen *= 2; | |
224c3ddb | 4995 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
4996 | } |
4997 | selector = strchr (method, ' '); | |
4998 | if (selector != NULL) | |
4999 | selector++; | |
9af17804 | 5000 | |
69636828 | 5001 | category = strchr (method, '('); |
9af17804 | 5002 | |
69636828 AF |
5003 | if ((category != NULL) && (selector != NULL)) |
5004 | { | |
5005 | memcpy (tmp, method, (category - method)); | |
5006 | tmp[category - method] = ' '; | |
5007 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5008 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5009 | lookup_name, text, word); |
5010 | if (text[0] == '[') | |
b5ec771e | 5011 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5012 | lookup_name, text, word); |
69636828 | 5013 | } |
9af17804 | 5014 | |
69636828 AF |
5015 | if (selector != NULL) |
5016 | { | |
5017 | /* Complete on selector only. */ | |
5018 | strcpy (tmp, selector); | |
5019 | tmp2 = strchr (tmp, ']'); | |
5020 | if (tmp2 != NULL) | |
5021 | *tmp2 = '\0'; | |
9af17804 | 5022 | |
b5ec771e | 5023 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5024 | lookup_name, text, word); |
69636828 AF |
5025 | } |
5026 | } | |
5027 | ||
5028 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5029 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5030 | |
6f937416 PA |
5031 | static const char * |
5032 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5033 | { |
5034 | for (; p > text; --p) | |
5035 | { | |
5036 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5037 | continue; | |
5038 | else | |
5039 | { | |
5040 | if ((current_language->la_language == language_objc)) | |
5041 | { | |
c378eb4e | 5042 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5043 | continue; |
5044 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5045 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5046 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5047 | { /* Might be part of a method name. */ |
6f937416 | 5048 | const char *t = p; |
69636828 AF |
5049 | |
5050 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5051 | that we are in the middle of a method name. However, | |
5052 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5053 | Unfortunately we have to find it now to decide. */ | |
5054 | ||
5055 | while (t > text) | |
5056 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5057 | t[-1] == ' ' || t[-1] == ':' || | |
5058 | t[-1] == '(' || t[-1] == ')') | |
5059 | --t; | |
5060 | else | |
5061 | break; | |
5062 | ||
5063 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5064 | p = t - 2; /* Method name detected. */ |
5065 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5066 | } |
5067 | } | |
5068 | break; | |
5069 | } | |
5070 | } | |
5071 | return p; | |
5072 | } | |
5073 | ||
edb3359d | 5074 | static void |
eb3ff9a5 PA |
5075 | completion_list_add_fields (completion_tracker &tracker, |
5076 | struct symbol *sym, | |
b5ec771e | 5077 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5078 | const char *text, const char *word) |
edb3359d DJ |
5079 | { |
5080 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5081 | { | |
5082 | struct type *t = SYMBOL_TYPE (sym); | |
5083 | enum type_code c = TYPE_CODE (t); | |
5084 | int j; | |
5085 | ||
5086 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5087 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5088 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5089 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5090 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5091 | lookup_name, text, word); |
edb3359d DJ |
5092 | } |
5093 | } | |
5094 | ||
f9d67a22 PA |
5095 | /* See symtab.h. */ |
5096 | ||
5097 | bool | |
5098 | symbol_is_function_or_method (symbol *sym) | |
5099 | { | |
5100 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5101 | { | |
5102 | case TYPE_CODE_FUNC: | |
5103 | case TYPE_CODE_METHOD: | |
5104 | return true; | |
5105 | default: | |
5106 | return false; | |
5107 | } | |
5108 | } | |
5109 | ||
5110 | /* See symtab.h. */ | |
5111 | ||
5112 | bool | |
5113 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5114 | { | |
5115 | switch (MSYMBOL_TYPE (msymbol)) | |
5116 | { | |
5117 | case mst_text: | |
5118 | case mst_text_gnu_ifunc: | |
5119 | case mst_solib_trampoline: | |
5120 | case mst_file_text: | |
5121 | return true; | |
5122 | default: | |
5123 | return false; | |
5124 | } | |
5125 | } | |
5126 | ||
ca31ab1d PA |
5127 | /* See symtab.h. */ |
5128 | ||
5129 | bound_minimal_symbol | |
5130 | find_gnu_ifunc (const symbol *sym) | |
5131 | { | |
5132 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5133 | return {}; | |
5134 | ||
5135 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5136 | symbol_name_match_type::SEARCH_NAME); | |
5137 | struct objfile *objfile = symbol_objfile (sym); | |
5138 | ||
2b1ffcfd | 5139 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5140 | minimal_symbol *ifunc = NULL; |
5141 | ||
5142 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5143 | [&] (minimal_symbol *minsym) | |
5144 | { | |
5145 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5146 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5147 | { |
f50776aa PA |
5148 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5149 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5150 | { | |
5151 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5152 | msym_addr |
5153 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5154 | msym_addr, | |
5155 | current_top_target ()); | |
f50776aa PA |
5156 | } |
5157 | if (msym_addr == address) | |
5158 | { | |
5159 | ifunc = minsym; | |
5160 | return true; | |
5161 | } | |
ca31ab1d PA |
5162 | } |
5163 | return false; | |
5164 | }); | |
5165 | ||
5166 | if (ifunc != NULL) | |
5167 | return {ifunc, objfile}; | |
5168 | return {}; | |
5169 | } | |
5170 | ||
e11c72c7 GB |
5171 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5172 | ||
5173 | static void | |
5174 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5175 | completion_tracker &tracker, |
f9d67a22 | 5176 | complete_symbol_mode mode, |
b5ec771e | 5177 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5178 | const char *text, const char *word, |
5179 | enum type_code code) | |
5180 | { | |
5181 | struct symbol *sym; | |
5182 | const struct block *b; | |
5183 | struct block_iterator iter; | |
5184 | int i; | |
5185 | ||
ff6fa247 GB |
5186 | if (cust == NULL) |
5187 | return; | |
5188 | ||
e11c72c7 GB |
5189 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5190 | { | |
5191 | QUIT; | |
5192 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5193 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5194 | { | |
f9d67a22 PA |
5195 | if (completion_skip_symbol (mode, sym)) |
5196 | continue; | |
5197 | ||
e11c72c7 GB |
5198 | if (code == TYPE_CODE_UNDEF |
5199 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5200 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5201 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5202 | lookup_name, |
e11c72c7 GB |
5203 | text, word); |
5204 | } | |
5205 | } | |
5206 | } | |
5207 | ||
eb3ff9a5 PA |
5208 | void |
5209 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5210 | (completion_tracker &tracker, complete_symbol_mode mode, |
5211 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5212 | const char *text, const char *word, |
5213 | const char *break_on, enum type_code code) | |
c906108c | 5214 | { |
41d27058 JB |
5215 | /* Problem: All of the symbols have to be copied because readline |
5216 | frees them. I'm not going to worry about this; hopefully there | |
5217 | won't be that many. */ | |
5218 | ||
de4f826b | 5219 | struct symbol *sym; |
3977b71f | 5220 | const struct block *b; |
edb3359d | 5221 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5222 | struct block_iterator iter; |
c906108c | 5223 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5224 | const char *sym_text; |
c906108c | 5225 | |
41d27058 | 5226 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5227 | if (mode == complete_symbol_mode::LINESPEC) |
5228 | sym_text = text; | |
5229 | else | |
c906108c | 5230 | { |
6f937416 | 5231 | const char *p; |
c906108c | 5232 | char quote_found; |
6f937416 | 5233 | const char *quote_pos = NULL; |
c906108c SS |
5234 | |
5235 | /* First see if this is a quoted string. */ | |
5236 | quote_found = '\0'; | |
5237 | for (p = text; *p != '\0'; ++p) | |
5238 | { | |
5239 | if (quote_found != '\0') | |
5240 | { | |
5241 | if (*p == quote_found) | |
5242 | /* Found close quote. */ | |
5243 | quote_found = '\0'; | |
5244 | else if (*p == '\\' && p[1] == quote_found) | |
5245 | /* A backslash followed by the quote character | |
c5aa993b | 5246 | doesn't end the string. */ |
c906108c SS |
5247 | ++p; |
5248 | } | |
5249 | else if (*p == '\'' || *p == '"') | |
5250 | { | |
5251 | quote_found = *p; | |
5252 | quote_pos = p; | |
5253 | } | |
5254 | } | |
5255 | if (quote_found == '\'') | |
5256 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5257 | sym_text = quote_pos + 1; | |
5258 | else if (quote_found == '"') | |
5259 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5260 | to complete it any other way. */ |
c94fdfd0 | 5261 | { |
ef0b411a | 5262 | return; |
c94fdfd0 | 5263 | } |
c906108c SS |
5264 | else |
5265 | { | |
5266 | /* It is not a quoted string. Break it based on the characters | |
5267 | which are in symbols. */ | |
5268 | while (p > text) | |
5269 | { | |
95699ff0 | 5270 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5271 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5272 | --p; |
5273 | else | |
5274 | break; | |
5275 | } | |
5276 | sym_text = p; | |
5277 | } | |
5278 | } | |
5279 | ||
1b026119 | 5280 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5281 | |
c906108c SS |
5282 | /* At this point scan through the misc symbol vectors and add each |
5283 | symbol you find to the list. Eventually we want to ignore | |
5284 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5285 | handled by the psymtab code below). */ |
c906108c | 5286 | |
2f68a895 TT |
5287 | if (code == TYPE_CODE_UNDEF) |
5288 | { | |
2030c079 | 5289 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5290 | { |
7932255d | 5291 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5292 | { |
5293 | QUIT; | |
9af17804 | 5294 | |
5325b9bf TT |
5295 | if (completion_skip_symbol (mode, msymbol)) |
5296 | continue; | |
f9d67a22 | 5297 | |
5325b9bf TT |
5298 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5299 | sym_text, word); | |
eb3ff9a5 | 5300 | |
5325b9bf TT |
5301 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5302 | sym_text, word); | |
5303 | } | |
2f68a895 TT |
5304 | } |
5305 | } | |
c906108c | 5306 | |
e11c72c7 | 5307 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5308 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5309 | { |
b669c953 | 5310 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5311 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5312 | sym_text, word, code); | |
5313 | } | |
e11c72c7 | 5314 | |
14bc53a8 PA |
5315 | /* Look through the partial symtabs for all symbols which begin by |
5316 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5317 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5318 | lookup_name, |
5319 | NULL, | |
14bc53a8 PA |
5320 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5321 | { | |
5322 | add_symtab_completions (symtab, | |
f9d67a22 | 5323 | tracker, mode, lookup_name, |
1b026119 | 5324 | sym_text, word, code); |
14bc53a8 PA |
5325 | }, |
5326 | ALL_DOMAIN); | |
e11c72c7 | 5327 | |
c906108c | 5328 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5329 | complete on local vars). Also catch fields of types defined in |
5330 | this places which match our text string. Only complete on types | |
c378eb4e | 5331 | visible from current context. */ |
edb3359d DJ |
5332 | |
5333 | b = get_selected_block (0); | |
5334 | surrounding_static_block = block_static_block (b); | |
5335 | surrounding_global_block = block_global_block (b); | |
5336 | if (surrounding_static_block != NULL) | |
5337 | while (b != surrounding_static_block) | |
5338 | { | |
5339 | QUIT; | |
c906108c | 5340 | |
edb3359d DJ |
5341 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5342 | { | |
2f68a895 TT |
5343 | if (code == TYPE_CODE_UNDEF) |
5344 | { | |
b5ec771e | 5345 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5346 | sym_text, word); |
b5ec771e | 5347 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5348 | sym_text, word); |
2f68a895 TT |
5349 | } |
5350 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5351 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5352 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5353 | sym_text, word); |
edb3359d | 5354 | } |
c5aa993b | 5355 | |
edb3359d DJ |
5356 | /* Stop when we encounter an enclosing function. Do not stop for |
5357 | non-inlined functions - the locals of the enclosing function | |
5358 | are in scope for a nested function. */ | |
5359 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5360 | break; | |
5361 | b = BLOCK_SUPERBLOCK (b); | |
5362 | } | |
c906108c | 5363 | |
edb3359d | 5364 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5365 | |
2f68a895 TT |
5366 | if (code == TYPE_CODE_UNDEF) |
5367 | { | |
5368 | if (surrounding_static_block != NULL) | |
5369 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5370 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5371 | sym_text, word); |
edb3359d | 5372 | |
2f68a895 TT |
5373 | if (surrounding_global_block != NULL) |
5374 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5375 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5376 | sym_text, word); |
2f68a895 | 5377 | } |
c906108c | 5378 | |
2f68a895 TT |
5379 | /* Skip macros if we are completing a struct tag -- arguable but |
5380 | usually what is expected. */ | |
5381 | if (current_language->la_macro_expansion == macro_expansion_c | |
5382 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5383 | { |
f6c2623e | 5384 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5385 | |
14bc53a8 PA |
5386 | /* This adds a macro's name to the current completion list. */ |
5387 | auto add_macro_name = [&] (const char *macro_name, | |
5388 | const macro_definition *, | |
5389 | macro_source_file *, | |
5390 | int) | |
5391 | { | |
1b026119 PA |
5392 | completion_list_add_name (tracker, language_c, macro_name, |
5393 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5394 | }; |
5395 | ||
9a044a89 TT |
5396 | /* Add any macros visible in the default scope. Note that this |
5397 | may yield the occasional wrong result, because an expression | |
5398 | might be evaluated in a scope other than the default. For | |
5399 | example, if the user types "break file:line if <TAB>", the | |
5400 | resulting expression will be evaluated at "file:line" -- but | |
5401 | at there does not seem to be a way to detect this at | |
5402 | completion time. */ | |
5403 | scope = default_macro_scope (); | |
5404 | if (scope) | |
f6c2623e TT |
5405 | macro_for_each_in_scope (scope->file, scope->line, |
5406 | add_macro_name); | |
9a044a89 TT |
5407 | |
5408 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5409 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5410 | } |
ef0b411a GB |
5411 | } |
5412 | ||
eb3ff9a5 PA |
5413 | void |
5414 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5415 | complete_symbol_mode mode, |
b5ec771e | 5416 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5417 | const char *text, const char *word, |
5418 | enum type_code code) | |
f55ee35c | 5419 | { |
c6756f62 | 5420 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5421 | name_match_type, |
eb3ff9a5 PA |
5422 | text, word, "", |
5423 | code); | |
f55ee35c JK |
5424 | } |
5425 | ||
eb3ff9a5 PA |
5426 | /* Collect all symbols (regardless of class) which begin by matching |
5427 | TEXT. */ | |
41d27058 | 5428 | |
eb3ff9a5 PA |
5429 | void |
5430 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5431 | complete_symbol_mode mode, |
b5ec771e | 5432 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5433 | const char *text, const char *word) |
41d27058 | 5434 | { |
c6756f62 | 5435 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5436 | name_match_type, |
eb3ff9a5 PA |
5437 | text, word, |
5438 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5439 | } |
5440 | ||
eb3ff9a5 PA |
5441 | /* Like collect_symbol_completion_matches, but only collect |
5442 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5443 | |
eb3ff9a5 PA |
5444 | void |
5445 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5446 | const char *text, const char *word, | |
5447 | enum type_code code) | |
2f68a895 | 5448 | { |
c6756f62 | 5449 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5450 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5451 | |
2f68a895 TT |
5452 | gdb_assert (code == TYPE_CODE_UNION |
5453 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5454 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5455 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5456 | name_match_type, |
eb3ff9a5 | 5457 | text, word, code); |
41d27058 JB |
5458 | } |
5459 | ||
eb3ff9a5 PA |
5460 | /* Like collect_symbol_completion_matches, but collects a list of |
5461 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5462 | |
eb3ff9a5 PA |
5463 | void |
5464 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5465 | complete_symbol_mode mode, |
b5ec771e | 5466 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5467 | const char *text, const char *word, |
5468 | const char *srcfile) | |
c94fdfd0 | 5469 | { |
c94fdfd0 | 5470 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5471 | const char *sym_text; |
c94fdfd0 EZ |
5472 | |
5473 | /* Now look for the symbol we are supposed to complete on. | |
5474 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5475 | if (mode == complete_symbol_mode::LINESPEC) |
5476 | sym_text = text; | |
5477 | else | |
c94fdfd0 | 5478 | { |
6f937416 | 5479 | const char *p; |
c94fdfd0 | 5480 | char quote_found; |
6f937416 | 5481 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5482 | |
5483 | /* First see if this is a quoted string. */ | |
5484 | quote_found = '\0'; | |
5485 | for (p = text; *p != '\0'; ++p) | |
5486 | { | |
5487 | if (quote_found != '\0') | |
5488 | { | |
5489 | if (*p == quote_found) | |
5490 | /* Found close quote. */ | |
5491 | quote_found = '\0'; | |
5492 | else if (*p == '\\' && p[1] == quote_found) | |
5493 | /* A backslash followed by the quote character | |
5494 | doesn't end the string. */ | |
5495 | ++p; | |
5496 | } | |
5497 | else if (*p == '\'' || *p == '"') | |
5498 | { | |
5499 | quote_found = *p; | |
5500 | quote_pos = p; | |
5501 | } | |
5502 | } | |
5503 | if (quote_found == '\'') | |
5504 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5505 | sym_text = quote_pos + 1; | |
5506 | else if (quote_found == '"') | |
5507 | /* A double-quoted string is never a symbol, nor does it make sense | |
5508 | to complete it any other way. */ | |
5509 | { | |
eb3ff9a5 | 5510 | return; |
c94fdfd0 EZ |
5511 | } |
5512 | else | |
5513 | { | |
69636828 AF |
5514 | /* Not a quoted string. */ |
5515 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5516 | } |
5517 | } | |
5518 | ||
1b026119 | 5519 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5520 | |
8f14146e PA |
5521 | /* Go through symtabs for SRCFILE and check the externs and statics |
5522 | for symbols which match. */ | |
5523 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5524 | { |
8f14146e | 5525 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5526 | tracker, mode, lookup_name, |
1b026119 | 5527 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5528 | return false; |
5529 | }); | |
e27852be DE |
5530 | } |
5531 | ||
c94fdfd0 EZ |
5532 | /* A helper function for make_source_files_completion_list. It adds |
5533 | another file name to a list of possible completions, growing the | |
5534 | list as necessary. */ | |
5535 | ||
5536 | static void | |
6f937416 | 5537 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5538 | completion_list *list) |
c94fdfd0 | 5539 | { |
60a20c19 | 5540 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5541 | } |
5542 | ||
5543 | static int | |
5544 | not_interesting_fname (const char *fname) | |
5545 | { | |
5546 | static const char *illegal_aliens[] = { | |
5547 | "_globals_", /* inserted by coff_symtab_read */ | |
5548 | NULL | |
5549 | }; | |
5550 | int i; | |
5551 | ||
5552 | for (i = 0; illegal_aliens[i]; i++) | |
5553 | { | |
0ba1096a | 5554 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5555 | return 1; |
5556 | } | |
5557 | return 0; | |
5558 | } | |
5559 | ||
ccefe4c4 TT |
5560 | /* An object of this type is passed as the user_data argument to |
5561 | map_partial_symbol_filenames. */ | |
5562 | struct add_partial_filename_data | |
5563 | { | |
9fdc877b | 5564 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5565 | const char *text; |
5566 | const char *word; | |
ccefe4c4 | 5567 | int text_len; |
eb3ff9a5 | 5568 | completion_list *list; |
ccefe4c4 TT |
5569 | }; |
5570 | ||
5571 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5572 | |
ccefe4c4 | 5573 | static void |
2837d59e | 5574 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5575 | void *user_data) |
5576 | { | |
19ba03f4 SM |
5577 | struct add_partial_filename_data *data |
5578 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5579 | |
5580 | if (not_interesting_fname (filename)) | |
5581 | return; | |
bbf2f4df | 5582 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5583 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5584 | { |
5585 | /* This file matches for a completion; add it to the | |
5586 | current list of matches. */ | |
49c4e619 | 5587 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5588 | } |
5589 | else | |
5590 | { | |
5591 | const char *base_name = lbasename (filename); | |
433759f7 | 5592 | |
ccefe4c4 | 5593 | if (base_name != filename |
bbf2f4df | 5594 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5595 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5596 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5597 | } |
5598 | } | |
5599 | ||
eb3ff9a5 | 5600 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5601 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5602 | program. */ |
c94fdfd0 | 5603 | |
eb3ff9a5 | 5604 | completion_list |
6f937416 | 5605 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5606 | { |
c94fdfd0 | 5607 | size_t text_len = strlen (text); |
eb3ff9a5 | 5608 | completion_list list; |
31889e00 | 5609 | const char *base_name; |
ccefe4c4 | 5610 | struct add_partial_filename_data datum; |
c94fdfd0 | 5611 | |
c94fdfd0 EZ |
5612 | if (!have_full_symbols () && !have_partial_symbols ()) |
5613 | return list; | |
5614 | ||
bbf2f4df | 5615 | filename_seen_cache filenames_seen; |
9fdc877b | 5616 | |
2030c079 | 5617 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5618 | { |
b669c953 | 5619 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5620 | { |
8b31193a TT |
5621 | for (symtab *s : compunit_filetabs (cu)) |
5622 | { | |
5623 | if (not_interesting_fname (s->filename)) | |
5624 | continue; | |
5625 | if (!filenames_seen.seen (s->filename) | |
5626 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5627 | { | |
5628 | /* This file matches for a completion; add it to the current | |
5629 | list of matches. */ | |
5630 | add_filename_to_list (s->filename, text, word, &list); | |
5631 | } | |
5632 | else | |
5633 | { | |
5634 | /* NOTE: We allow the user to type a base name when the | |
5635 | debug info records leading directories, but not the other | |
5636 | way around. This is what subroutines of breakpoint | |
5637 | command do when they parse file names. */ | |
5638 | base_name = lbasename (s->filename); | |
5639 | if (base_name != s->filename | |
5640 | && !filenames_seen.seen (base_name) | |
5641 | && filename_ncmp (base_name, text, text_len) == 0) | |
5642 | add_filename_to_list (base_name, text, word, &list); | |
5643 | } | |
5644 | } | |
c94fdfd0 EZ |
5645 | } |
5646 | } | |
5647 | ||
bbf2f4df | 5648 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5649 | datum.text = text; |
5650 | datum.word = word; | |
5651 | datum.text_len = text_len; | |
5652 | datum.list = &list; | |
bb4142cf DE |
5653 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5654 | 0 /*need_fullname*/); | |
9fdc877b | 5655 | |
c94fdfd0 EZ |
5656 | return list; |
5657 | } | |
c906108c | 5658 | \f |
51cc5b07 | 5659 | /* Track MAIN */ |
32ac0d11 TT |
5660 | |
5661 | /* Return the "main_info" object for the current program space. If | |
5662 | the object has not yet been created, create it and fill in some | |
5663 | default values. */ | |
5664 | ||
5665 | static struct main_info * | |
5666 | get_main_info (void) | |
5667 | { | |
19ba03f4 SM |
5668 | struct main_info *info |
5669 | = (struct main_info *) program_space_data (current_program_space, | |
32ac0d11 TT |
5670 | main_progspace_key); |
5671 | ||
5672 | if (info == NULL) | |
5673 | { | |
3d548a53 TT |
5674 | /* It may seem strange to store the main name in the progspace |
5675 | and also in whatever objfile happens to see a main name in | |
5676 | its debug info. The reason for this is mainly historical: | |
5677 | gdb returned "main" as the name even if no function named | |
5678 | "main" was defined the program; and this approach lets us | |
5679 | keep compatibility. */ | |
32ac0d11 TT |
5680 | info = XCNEW (struct main_info); |
5681 | info->language_of_main = language_unknown; | |
5682 | set_program_space_data (current_program_space, main_progspace_key, | |
5683 | info); | |
5684 | } | |
5685 | ||
5686 | return info; | |
5687 | } | |
5688 | ||
5689 | /* A cleanup to destroy a struct main_info when a progspace is | |
5690 | destroyed. */ | |
5691 | ||
5692 | static void | |
5693 | main_info_cleanup (struct program_space *pspace, void *data) | |
5694 | { | |
19ba03f4 | 5695 | struct main_info *info = (struct main_info *) data; |
32ac0d11 TT |
5696 | |
5697 | if (info != NULL) | |
5698 | xfree (info->name_of_main); | |
5699 | xfree (info); | |
5700 | } | |
51cc5b07 | 5701 | |
3d548a53 | 5702 | static void |
9e6c82ad | 5703 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5704 | { |
32ac0d11 TT |
5705 | struct main_info *info = get_main_info (); |
5706 | ||
5707 | if (info->name_of_main != NULL) | |
51cc5b07 | 5708 | { |
32ac0d11 TT |
5709 | xfree (info->name_of_main); |
5710 | info->name_of_main = NULL; | |
5711 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5712 | } |
5713 | if (name != NULL) | |
5714 | { | |
32ac0d11 TT |
5715 | info->name_of_main = xstrdup (name); |
5716 | info->language_of_main = lang; | |
51cc5b07 AC |
5717 | } |
5718 | } | |
5719 | ||
ea53e89f JB |
5720 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5721 | accordingly. */ | |
5722 | ||
5723 | static void | |
5724 | find_main_name (void) | |
5725 | { | |
cd6c7346 | 5726 | const char *new_main_name; |
3d548a53 TT |
5727 | |
5728 | /* First check the objfiles to see whether a debuginfo reader has | |
5729 | picked up the appropriate main name. Historically the main name | |
5730 | was found in a more or less random way; this approach instead | |
5731 | relies on the order of objfile creation -- which still isn't | |
5732 | guaranteed to get the correct answer, but is just probably more | |
5733 | accurate. */ | |
2030c079 | 5734 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5735 | { |
5736 | if (objfile->per_bfd->name_of_main != NULL) | |
5737 | { | |
5738 | set_main_name (objfile->per_bfd->name_of_main, | |
5739 | objfile->per_bfd->language_of_main); | |
5740 | return; | |
5741 | } | |
5742 | } | |
ea53e89f JB |
5743 | |
5744 | /* Try to see if the main procedure is in Ada. */ | |
5745 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5746 | be to add a new method in the language vector, and call this | |
5747 | method for each language until one of them returns a non-empty | |
5748 | name. This would allow us to remove this hard-coded call to | |
5749 | an Ada function. It is not clear that this is a better approach | |
5750 | at this point, because all methods need to be written in a way | |
c378eb4e | 5751 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5752 | important that a method does not return a wrong name for the main |
5753 | procedure if the main procedure is actually written in a different | |
5754 | language. It is easy to guaranty this with Ada, since we use a | |
5755 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5756 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5757 | be guarantied for languages such as C, for instance. This suggests |
5758 | that order of call for these methods becomes important, which means | |
5759 | a more complicated approach. */ | |
5760 | new_main_name = ada_main_name (); | |
5761 | if (new_main_name != NULL) | |
9af17804 | 5762 | { |
9e6c82ad | 5763 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5764 | return; |
5765 | } | |
5766 | ||
63778547 IB |
5767 | new_main_name = d_main_name (); |
5768 | if (new_main_name != NULL) | |
5769 | { | |
5770 | set_main_name (new_main_name, language_d); | |
5771 | return; | |
5772 | } | |
5773 | ||
a766d390 DE |
5774 | new_main_name = go_main_name (); |
5775 | if (new_main_name != NULL) | |
5776 | { | |
9e6c82ad | 5777 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5778 | return; |
5779 | } | |
5780 | ||
cd6c7346 PM |
5781 | new_main_name = pascal_main_name (); |
5782 | if (new_main_name != NULL) | |
9af17804 | 5783 | { |
9e6c82ad | 5784 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5785 | return; |
5786 | } | |
5787 | ||
ea53e89f JB |
5788 | /* The languages above didn't identify the name of the main procedure. |
5789 | Fallback to "main". */ | |
9e6c82ad | 5790 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5791 | } |
5792 | ||
51cc5b07 AC |
5793 | char * |
5794 | main_name (void) | |
5795 | { | |
32ac0d11 TT |
5796 | struct main_info *info = get_main_info (); |
5797 | ||
5798 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5799 | find_main_name (); |
5800 | ||
32ac0d11 | 5801 | return info->name_of_main; |
51cc5b07 AC |
5802 | } |
5803 | ||
9e6c82ad TT |
5804 | /* Return the language of the main function. If it is not known, |
5805 | return language_unknown. */ | |
5806 | ||
5807 | enum language | |
5808 | main_language (void) | |
5809 | { | |
32ac0d11 TT |
5810 | struct main_info *info = get_main_info (); |
5811 | ||
5812 | if (info->name_of_main == NULL) | |
5813 | find_main_name (); | |
5814 | ||
5815 | return info->language_of_main; | |
9e6c82ad TT |
5816 | } |
5817 | ||
ea53e89f JB |
5818 | /* Handle ``executable_changed'' events for the symtab module. */ |
5819 | ||
5820 | static void | |
781b42b0 | 5821 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5822 | { |
5823 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5824 | set_main_name (NULL, language_unknown); |
ea53e89f | 5825 | } |
51cc5b07 | 5826 | |
a6c727b2 DJ |
5827 | /* Return 1 if the supplied producer string matches the ARM RealView |
5828 | compiler (armcc). */ | |
5829 | ||
5830 | int | |
5831 | producer_is_realview (const char *producer) | |
5832 | { | |
5833 | static const char *const arm_idents[] = { | |
5834 | "ARM C Compiler, ADS", | |
5835 | "Thumb C Compiler, ADS", | |
5836 | "ARM C++ Compiler, ADS", | |
5837 | "Thumb C++ Compiler, ADS", | |
5838 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5839 | "ARM C/C++ Compiler, RVCT" | |
5840 | }; | |
5841 | int i; | |
5842 | ||
5843 | if (producer == NULL) | |
5844 | return 0; | |
5845 | ||
5846 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 5847 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
5848 | return 1; |
5849 | ||
5850 | return 0; | |
5851 | } | |
ed0616c6 | 5852 | |
f1e6e072 TT |
5853 | \f |
5854 | ||
5855 | /* The next index to hand out in response to a registration request. */ | |
5856 | ||
5857 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5858 | ||
5859 | /* The maximum number of "aclass" registrations we support. This is | |
5860 | constant for convenience. */ | |
5861 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5862 | ||
5863 | /* The objects representing the various "aclass" values. The elements | |
5864 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5865 | elements are those registered at gdb initialization time. */ | |
5866 | ||
5867 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5868 | ||
5869 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5870 | so that it can be const. */ | |
5871 | ||
5872 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5873 | ||
5874 | /* Make sure we saved enough room in struct symbol. */ | |
5875 | ||
5876 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5877 | ||
5878 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5879 | is the ops vector associated with this index. This returns the new | |
5880 | index, which should be used as the aclass_index field for symbols | |
5881 | of this type. */ | |
5882 | ||
5883 | int | |
5884 | register_symbol_computed_impl (enum address_class aclass, | |
5885 | const struct symbol_computed_ops *ops) | |
5886 | { | |
5887 | int result = next_aclass_value++; | |
5888 | ||
5889 | gdb_assert (aclass == LOC_COMPUTED); | |
5890 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5891 | symbol_impl[result].aclass = aclass; | |
5892 | symbol_impl[result].ops_computed = ops; | |
5893 | ||
24d6c2a0 TT |
5894 | /* Sanity check OPS. */ |
5895 | gdb_assert (ops != NULL); | |
5896 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
5897 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 5898 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
5899 | gdb_assert (ops->read_variable != NULL); |
5900 | ||
f1e6e072 TT |
5901 | return result; |
5902 | } | |
5903 | ||
5904 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
5905 | OPS is the ops vector associated with this index. This returns the | |
5906 | new index, which should be used as the aclass_index field for symbols | |
5907 | of this type. */ | |
5908 | ||
5909 | int | |
5910 | register_symbol_block_impl (enum address_class aclass, | |
5911 | const struct symbol_block_ops *ops) | |
5912 | { | |
5913 | int result = next_aclass_value++; | |
5914 | ||
5915 | gdb_assert (aclass == LOC_BLOCK); | |
5916 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5917 | symbol_impl[result].aclass = aclass; | |
5918 | symbol_impl[result].ops_block = ops; | |
5919 | ||
5920 | /* Sanity check OPS. */ | |
5921 | gdb_assert (ops != NULL); | |
5922 | gdb_assert (ops->find_frame_base_location != NULL); | |
5923 | ||
5924 | return result; | |
5925 | } | |
5926 | ||
5927 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
5928 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
5929 | this index. This returns the new index, which should be used as | |
5930 | the aclass_index field for symbols of this type. */ | |
5931 | ||
5932 | int | |
5933 | register_symbol_register_impl (enum address_class aclass, | |
5934 | const struct symbol_register_ops *ops) | |
5935 | { | |
5936 | int result = next_aclass_value++; | |
5937 | ||
5938 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
5939 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5940 | symbol_impl[result].aclass = aclass; | |
5941 | symbol_impl[result].ops_register = ops; | |
5942 | ||
5943 | return result; | |
5944 | } | |
5945 | ||
5946 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
5947 | address_class. */ | |
5948 | ||
5949 | static void | |
5950 | initialize_ordinary_address_classes (void) | |
5951 | { | |
5952 | int i; | |
5953 | ||
5954 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 5955 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
5956 | } |
5957 | ||
5958 | \f | |
5959 | ||
1994afbf DE |
5960 | /* Helper function to initialize the fields of an objfile-owned symbol. |
5961 | It assumed that *SYM is already all zeroes. */ | |
5962 | ||
5963 | static void | |
5964 | initialize_objfile_symbol_1 (struct symbol *sym) | |
5965 | { | |
5966 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
5967 | SYMBOL_SECTION (sym) = -1; | |
5968 | } | |
5969 | ||
5970 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
5971 | |
5972 | void | |
38bf1463 | 5973 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
5974 | { |
5975 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 5976 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
5977 | } |
5978 | ||
5979 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
5980 | obstack. */ | |
5981 | ||
5982 | struct symbol * | |
5983 | allocate_symbol (struct objfile *objfile) | |
5984 | { | |
5985 | struct symbol *result; | |
5986 | ||
5987 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 5988 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5989 | |
5990 | return result; | |
5991 | } | |
5992 | ||
5993 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
5994 | obstack. */ | |
5995 | ||
5996 | struct template_symbol * | |
5997 | allocate_template_symbol (struct objfile *objfile) | |
5998 | { | |
5999 | struct template_symbol *result; | |
6000 | ||
6001 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 6002 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6003 | |
6004 | return result; | |
6005 | } | |
6006 | ||
08be3fe3 DE |
6007 | /* See symtab.h. */ |
6008 | ||
6009 | struct objfile * | |
6010 | symbol_objfile (const struct symbol *symbol) | |
6011 | { | |
1994afbf DE |
6012 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6013 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6014 | } |
6015 | ||
6016 | /* See symtab.h. */ | |
6017 | ||
6018 | struct gdbarch * | |
6019 | symbol_arch (const struct symbol *symbol) | |
6020 | { | |
1994afbf DE |
6021 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6022 | return symbol->owner.arch; | |
6023 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6024 | } |
6025 | ||
6026 | /* See symtab.h. */ | |
6027 | ||
6028 | struct symtab * | |
6029 | symbol_symtab (const struct symbol *symbol) | |
6030 | { | |
1994afbf DE |
6031 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6032 | return symbol->owner.symtab; | |
08be3fe3 DE |
6033 | } |
6034 | ||
6035 | /* See symtab.h. */ | |
6036 | ||
6037 | void | |
6038 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6039 | { | |
1994afbf DE |
6040 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6041 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6042 | } |
6043 | ||
e623cf5d TT |
6044 | \f |
6045 | ||
c906108c | 6046 | void |
fba45db2 | 6047 | _initialize_symtab (void) |
c906108c | 6048 | { |
f1e6e072 TT |
6049 | initialize_ordinary_address_classes (); |
6050 | ||
32ac0d11 TT |
6051 | main_progspace_key |
6052 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
6053 | ||
f57d2163 DE |
6054 | symbol_cache_key |
6055 | = register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup); | |
6056 | ||
12615cba PW |
6057 | add_info ("variables", info_variables_command, |
6058 | info_print_args_help (_("\ | |
6059 | All global and static variable names or those matching REGEXPs.\n\ | |
6060 | Usage: info variables [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6061 | Prints the global and static variables.\n"), | |
6062 | _("global and static variables"))); | |
c906108c | 6063 | if (dbx_commands) |
12615cba PW |
6064 | add_com ("whereis", class_info, info_variables_command, |
6065 | info_print_args_help (_("\ | |
6066 | All global and static variable names, or those matching REGEXPs.\n\ | |
6067 | Usage: whereis [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6068 | Prints the global and static variables.\n"), | |
6069 | _("global and static variables"))); | |
c906108c | 6070 | |
11db9430 | 6071 | add_info ("functions", info_functions_command, |
12615cba PW |
6072 | info_print_args_help (_("\ |
6073 | All function names or those matching REGEXPs.\n\ | |
6074 | Usage: info functions [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6075 | Prints the functions.\n"), | |
6076 | _("functions"))); | |
c906108c SS |
6077 | |
6078 | /* FIXME: This command has at least the following problems: | |
6079 | 1. It prints builtin types (in a very strange and confusing fashion). | |
6080 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
6081 | typedef struct foo *FOO |
6082 | type_print prints "FOO" when we want to make it (in this situation) | |
6083 | print "struct foo *". | |
c906108c SS |
6084 | I also think "ptype" or "whatis" is more likely to be useful (but if |
6085 | there is much disagreement "info types" can be fixed). */ | |
11db9430 | 6086 | add_info ("types", info_types_command, |
1bedd215 | 6087 | _("All type names, or those matching REGEXP.")); |
c906108c | 6088 | |
11db9430 | 6089 | add_info ("sources", info_sources_command, |
1bedd215 | 6090 | _("Source files in the program.")); |
c906108c SS |
6091 | |
6092 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6093 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6094 | |
717d2f5a JB |
6095 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6096 | multiple_symbols_modes, &multiple_symbols_mode, | |
6097 | _("\ | |
6098 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
6099 | in an expression."), _("\ | |
6100 | Show how the debugger handles ambiguities in expressions."), _("\ | |
6101 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6102 | NULL, NULL, &setlist, &showlist); | |
6103 | ||
c011a4f4 DE |
6104 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6105 | &basenames_may_differ, _("\ | |
6106 | Set whether a source file may have multiple base names."), _("\ | |
6107 | Show whether a source file may have multiple base names."), _("\ | |
6108 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6109 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6110 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6111 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6112 | but it allows the same file be known by more than one base name.\n\ | |
6113 | If not set (the default), all source files are assumed to have just\n\ | |
6114 | one base name, and gdb will do file name comparisons more efficiently."), | |
6115 | NULL, NULL, | |
6116 | &setlist, &showlist); | |
6117 | ||
db0fec5c DE |
6118 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6119 | _("Set debugging of symbol table creation."), | |
6120 | _("Show debugging of symbol table creation."), _("\ | |
6121 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6122 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6123 | A value greater than 1 provides more verbose information."), | |
6124 | NULL, | |
6125 | NULL, | |
6126 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6127 | |
cc485e62 DE |
6128 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6129 | _("\ | |
6130 | Set debugging of symbol lookup."), _("\ | |
6131 | Show debugging of symbol lookup."), _("\ | |
6132 | When enabled (non-zero), symbol lookups are logged."), | |
6133 | NULL, NULL, | |
6134 | &setdebuglist, &showdebuglist); | |
6135 | ||
f57d2163 DE |
6136 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6137 | &new_symbol_cache_size, | |
6138 | _("Set the size of the symbol cache."), | |
6139 | _("Show the size of the symbol cache."), _("\ | |
6140 | The size of the symbol cache.\n\ | |
6141 | If zero then the symbol cache is disabled."), | |
6142 | set_symbol_cache_size_handler, NULL, | |
6143 | &maintenance_set_cmdlist, | |
6144 | &maintenance_show_cmdlist); | |
6145 | ||
6146 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6147 | _("Dump the symbol cache for each program space."), | |
6148 | &maintenanceprintlist); | |
6149 | ||
6150 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6151 | maintenance_print_symbol_cache_statistics, | |
6152 | _("Print symbol cache statistics for each program space."), | |
6153 | &maintenanceprintlist); | |
6154 | ||
6155 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6156 | maintenance_flush_symbol_cache, | |
6157 | _("Flush the symbol cache for each program space."), | |
6158 | &maintenancelist); | |
6159 | ||
76727919 TT |
6160 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6161 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6162 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6163 | } |