Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 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" |
268a13a5 | 67 | #include "gdbsupport/gdb_optional.h" |
bbf2f4df | 68 | #include "filename-seen-cache.h" |
46a62268 | 69 | #include "arch-utils.h" |
b9c04fb2 | 70 | #include <algorithm> |
7bb43059 | 71 | #include "gdbsupport/gdb_string_view.h" |
268a13a5 | 72 | #include "gdbsupport/pathstuff.h" |
1a6ff1a9 | 73 | #include "gdbsupport/common-utils.h" |
ccefe4c4 | 74 | |
ff6c39cf | 75 | /* Forward declarations for local functions. */ |
c906108c | 76 | |
0b39b52e | 77 | static void rbreak_command (const char *, int); |
c906108c | 78 | |
f8eba3c6 | 79 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 80 | |
d12307c1 PMR |
81 | static struct block_symbol |
82 | lookup_symbol_aux (const char *name, | |
de63c46b | 83 | symbol_name_match_type match_type, |
d12307c1 PMR |
84 | const struct block *block, |
85 | const domain_enum domain, | |
86 | enum language language, | |
87 | struct field_of_this_result *); | |
fba7f19c | 88 | |
e4051eeb | 89 | static |
d12307c1 | 90 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 91 | symbol_name_match_type match_type, |
d12307c1 PMR |
92 | const struct block *block, |
93 | const domain_enum domain, | |
94 | enum language language); | |
8155455b | 95 | |
d12307c1 | 96 | static struct block_symbol |
c32e6a04 CB |
97 | lookup_symbol_in_objfile (struct objfile *objfile, |
98 | enum block_enum block_index, | |
fe2a438d | 99 | const char *name, const domain_enum domain); |
c906108c | 100 | |
32ac0d11 TT |
101 | /* Type of the data stored on the program space. */ |
102 | ||
103 | struct main_info | |
104 | { | |
a32ad8c5 TT |
105 | main_info () = default; |
106 | ||
107 | ~main_info () | |
108 | { | |
109 | xfree (name_of_main); | |
110 | } | |
111 | ||
32ac0d11 TT |
112 | /* Name of "main". */ |
113 | ||
a32ad8c5 | 114 | char *name_of_main = nullptr; |
32ac0d11 TT |
115 | |
116 | /* Language of "main". */ | |
117 | ||
a32ad8c5 | 118 | enum language language_of_main = language_unknown; |
32ac0d11 TT |
119 | }; |
120 | ||
a32ad8c5 TT |
121 | /* Program space key for finding name and language of "main". */ |
122 | ||
123 | static const program_space_key<main_info> main_progspace_key; | |
124 | ||
f57d2163 DE |
125 | /* The default symbol cache size. |
126 | There is no extra cpu cost for large N (except when flushing the cache, | |
127 | which is rare). The value here is just a first attempt. A better default | |
128 | value may be higher or lower. A prime number can make up for a bad hash | |
129 | computation, so that's why the number is what it is. */ | |
130 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
131 | ||
132 | /* The maximum symbol cache size. | |
133 | There's no method to the decision of what value to use here, other than | |
134 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
135 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
136 | ||
137 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
138 | symbol in any objfile. */ | |
d12307c1 PMR |
139 | #define SYMBOL_LOOKUP_FAILED \ |
140 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
141 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
142 | |
143 | /* Recording lookups that don't find the symbol is just as important, if not | |
144 | more so, than recording found symbols. */ | |
145 | ||
146 | enum symbol_cache_slot_state | |
147 | { | |
148 | SYMBOL_SLOT_UNUSED, | |
149 | SYMBOL_SLOT_NOT_FOUND, | |
150 | SYMBOL_SLOT_FOUND | |
151 | }; | |
152 | ||
52059ffd TT |
153 | struct symbol_cache_slot |
154 | { | |
155 | enum symbol_cache_slot_state state; | |
156 | ||
157 | /* The objfile that was current when the symbol was looked up. | |
158 | This is only needed for global blocks, but for simplicity's sake | |
159 | we allocate the space for both. If data shows the extra space used | |
160 | for static blocks is a problem, we can split things up then. | |
161 | ||
162 | Global blocks need cache lookup to include the objfile context because | |
163 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
164 | which can traverse objfiles in, effectively, any order, depending on | |
165 | the current objfile, thus affecting which symbol is found. Normally, | |
166 | only the current objfile is searched first, and then the rest are | |
167 | searched in recorded order; but putting cache lookup inside | |
168 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
169 | Instead we just make the current objfile part of the context of | |
170 | cache lookup. This means we can record the same symbol multiple times, | |
171 | each with a different "current objfile" that was in effect when the | |
172 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
173 | const struct objfile *objfile_context; | |
174 | ||
175 | union | |
176 | { | |
d12307c1 | 177 | struct block_symbol found; |
52059ffd TT |
178 | struct |
179 | { | |
180 | char *name; | |
181 | domain_enum domain; | |
182 | } not_found; | |
183 | } value; | |
184 | }; | |
185 | ||
82f910ea PW |
186 | /* Clear out SLOT. */ |
187 | ||
188 | static void | |
189 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
190 | { | |
191 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
192 | xfree (slot->value.not_found.name); | |
193 | slot->state = SYMBOL_SLOT_UNUSED; | |
194 | } | |
195 | ||
f57d2163 DE |
196 | /* Symbols don't specify global vs static block. |
197 | So keep them in separate caches. */ | |
198 | ||
199 | struct block_symbol_cache | |
200 | { | |
201 | unsigned int hits; | |
202 | unsigned int misses; | |
203 | unsigned int collisions; | |
204 | ||
205 | /* SYMBOLS is a variable length array of this size. | |
206 | One can imagine that in general one cache (global/static) should be a | |
207 | fraction of the size of the other, but there's no data at the moment | |
208 | on which to decide. */ | |
209 | unsigned int size; | |
210 | ||
52059ffd | 211 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
212 | }; |
213 | ||
82f910ea PW |
214 | /* Clear all slots of BSC and free BSC. */ |
215 | ||
216 | static void | |
217 | destroy_block_symbol_cache (struct block_symbol_cache *bsc) | |
218 | { | |
219 | if (bsc != nullptr) | |
220 | { | |
221 | for (unsigned int i = 0; i < bsc->size; i++) | |
222 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
223 | xfree (bsc); | |
224 | } | |
225 | } | |
226 | ||
f57d2163 DE |
227 | /* The symbol cache. |
228 | ||
229 | Searching for symbols in the static and global blocks over multiple objfiles | |
230 | again and again can be slow, as can searching very big objfiles. This is a | |
231 | simple cache to improve symbol lookup performance, which is critical to | |
232 | overall gdb performance. | |
233 | ||
234 | Symbols are hashed on the name, its domain, and block. | |
235 | They are also hashed on their objfile for objfile-specific lookups. */ | |
236 | ||
237 | struct symbol_cache | |
238 | { | |
3017b94d TT |
239 | symbol_cache () = default; |
240 | ||
241 | ~symbol_cache () | |
242 | { | |
82f910ea PW |
243 | destroy_block_symbol_cache (global_symbols); |
244 | destroy_block_symbol_cache (static_symbols); | |
3017b94d TT |
245 | } |
246 | ||
247 | struct block_symbol_cache *global_symbols = nullptr; | |
248 | struct block_symbol_cache *static_symbols = nullptr; | |
f57d2163 DE |
249 | }; |
250 | ||
3017b94d TT |
251 | /* Program space key for finding its symbol cache. */ |
252 | ||
253 | static const program_space_key<symbol_cache> symbol_cache_key; | |
254 | ||
45cfd468 | 255 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 256 | unsigned int symtab_create_debug = 0; |
45cfd468 | 257 | |
cc485e62 DE |
258 | /* When non-zero, print debugging messages related to symbol lookup. */ |
259 | unsigned int symbol_lookup_debug = 0; | |
260 | ||
f57d2163 DE |
261 | /* The size of the cache is staged here. */ |
262 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
263 | ||
264 | /* The current value of the symbol cache size. | |
265 | This is saved so that if the user enters a value too big we can restore | |
266 | the original value from here. */ | |
267 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
268 | ||
491144b5 | 269 | /* True if a file may be known by two different basenames. |
c011a4f4 DE |
270 | This is the uncommon case, and significantly slows down gdb. |
271 | Default set to "off" to not slow down the common case. */ | |
491144b5 | 272 | bool basenames_may_differ = false; |
c011a4f4 | 273 | |
717d2f5a JB |
274 | /* Allow the user to configure the debugger behavior with respect |
275 | to multiple-choice menus when more than one symbol matches during | |
276 | a symbol lookup. */ | |
277 | ||
7fc830e2 MK |
278 | const char multiple_symbols_ask[] = "ask"; |
279 | const char multiple_symbols_all[] = "all"; | |
280 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 281 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
282 | { |
283 | multiple_symbols_ask, | |
284 | multiple_symbols_all, | |
285 | multiple_symbols_cancel, | |
286 | NULL | |
287 | }; | |
288 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
289 | ||
290 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
291 | ||
292 | const char * | |
293 | multiple_symbols_select_mode (void) | |
294 | { | |
295 | return multiple_symbols_mode; | |
296 | } | |
297 | ||
20c681d1 DE |
298 | /* Return the name of a domain_enum. */ |
299 | ||
300 | const char * | |
301 | domain_name (domain_enum e) | |
302 | { | |
303 | switch (e) | |
304 | { | |
305 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
306 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
307 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 308 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
309 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
310 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
311 | default: gdb_assert_not_reached ("bad domain_enum"); | |
312 | } | |
313 | } | |
314 | ||
315 | /* Return the name of a search_domain . */ | |
316 | ||
317 | const char * | |
318 | search_domain_name (enum search_domain e) | |
319 | { | |
320 | switch (e) | |
321 | { | |
322 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
323 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
324 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
59c35742 | 325 | case MODULES_DOMAIN: return "MODULES_DOMAIN"; |
20c681d1 DE |
326 | case ALL_DOMAIN: return "ALL_DOMAIN"; |
327 | default: gdb_assert_not_reached ("bad search_domain"); | |
328 | } | |
329 | } | |
330 | ||
43f3e411 | 331 | /* See symtab.h. */ |
db0fec5c | 332 | |
43f3e411 DE |
333 | struct symtab * |
334 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 335 | { |
43f3e411 | 336 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 337 | |
43f3e411 DE |
338 | /* The primary file symtab is the first one in the list. */ |
339 | return COMPUNIT_FILETABS (cust); | |
340 | } | |
341 | ||
342 | /* See symtab.h. */ | |
343 | ||
344 | enum language | |
345 | compunit_language (const struct compunit_symtab *cust) | |
346 | { | |
347 | struct symtab *symtab = compunit_primary_filetab (cust); | |
348 | ||
349 | /* The language of the compunit symtab is the language of its primary | |
350 | source file. */ | |
351 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
352 | } |
353 | ||
1ed9f74e PW |
354 | /* See symtab.h. */ |
355 | ||
356 | bool | |
357 | minimal_symbol::data_p () const | |
358 | { | |
359 | return type == mst_data | |
360 | || type == mst_bss | |
361 | || type == mst_abs | |
362 | || type == mst_file_data | |
363 | || type == mst_file_bss; | |
364 | } | |
365 | ||
366 | /* See symtab.h. */ | |
367 | ||
368 | bool | |
369 | minimal_symbol::text_p () const | |
370 | { | |
371 | return type == mst_text | |
372 | || type == mst_text_gnu_ifunc | |
373 | || type == mst_data_gnu_ifunc | |
374 | || type == mst_slot_got_plt | |
375 | || type == mst_solib_trampoline | |
376 | || type == mst_file_text; | |
377 | } | |
378 | ||
4aac40c8 TT |
379 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
380 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
381 | describes what we advertise). Returns true if they match, false |
382 | otherwise. */ | |
4aac40c8 | 383 | |
ececd218 | 384 | bool |
b57a636e | 385 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
386 | { |
387 | int len = strlen (filename); | |
b57a636e | 388 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
389 | |
390 | if (len < search_len) | |
ececd218 | 391 | return false; |
4aac40c8 TT |
392 | |
393 | /* The tail of FILENAME must match. */ | |
394 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
ececd218 | 395 | return false; |
4aac40c8 TT |
396 | |
397 | /* Either the names must completely match, or the character | |
398 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
399 | directory separator. |
400 | ||
af529f8f JK |
401 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
402 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
403 | absolute path. The sama applies for "c:\file.c" possibly | |
404 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
405 | ||
d84fca2c JK |
406 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
407 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
408 | to put the "c:file.c" name into debug info. Such compatibility | |
409 | works only on GDB built for DOS host. */ | |
4aac40c8 | 410 | return (len == search_len |
af529f8f JK |
411 | || (!IS_ABSOLUTE_PATH (search_name) |
412 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
413 | || (HAS_DRIVE_SPEC (filename) |
414 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
415 | } | |
416 | ||
cce0e923 DE |
417 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
418 | Heads up on the order of the arguments. They match the order of | |
419 | compare_filenames_for_search, but it's the opposite of the order of | |
420 | arguments to gdb_filename_fnmatch. */ | |
421 | ||
ececd218 | 422 | bool |
cce0e923 DE |
423 | compare_glob_filenames_for_search (const char *filename, |
424 | const char *search_name) | |
425 | { | |
426 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
427 | all /s have to be explicitly specified. */ | |
428 | int file_path_elements = count_path_elements (filename); | |
429 | int search_path_elements = count_path_elements (search_name); | |
430 | ||
431 | if (search_path_elements > file_path_elements) | |
ececd218 | 432 | return false; |
cce0e923 DE |
433 | |
434 | if (IS_ABSOLUTE_PATH (search_name)) | |
435 | { | |
436 | return (search_path_elements == file_path_elements | |
437 | && gdb_filename_fnmatch (search_name, filename, | |
438 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
439 | } | |
440 | ||
441 | { | |
442 | const char *file_to_compare | |
443 | = strip_leading_path_elements (filename, | |
444 | file_path_elements - search_path_elements); | |
445 | ||
446 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
447 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
448 | } | |
449 | } | |
450 | ||
f8eba3c6 TT |
451 | /* Check for a symtab of a specific name by searching some symtabs. |
452 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 453 | |
b2d23133 DE |
454 | If NAME is not absolute, then REAL_PATH is NULL |
455 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
456 | ||
14bc53a8 PA |
457 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
458 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 459 | |
43f3e411 DE |
460 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
461 | Each symtab within the specified compunit symtab is also searched. | |
462 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
463 | search until the end of the list. */ |
464 | ||
14bc53a8 | 465 | bool |
f8eba3c6 | 466 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 467 | const char *real_path, |
43f3e411 | 468 | struct compunit_symtab *first, |
14bc53a8 PA |
469 | struct compunit_symtab *after_last, |
470 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 471 | { |
43f3e411 | 472 | struct compunit_symtab *cust; |
c011a4f4 | 473 | const char* base_name = lbasename (name); |
1f84b619 | 474 | |
43f3e411 | 475 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 476 | { |
5accd1a0 | 477 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 478 | { |
43f3e411 DE |
479 | if (compare_filenames_for_search (s->filename, name)) |
480 | { | |
14bc53a8 PA |
481 | if (callback (s)) |
482 | return true; | |
43f3e411 DE |
483 | continue; |
484 | } | |
a94e8645 | 485 | |
43f3e411 DE |
486 | /* Before we invoke realpath, which can get expensive when many |
487 | files are involved, do a quick comparison of the basenames. */ | |
488 | if (! basenames_may_differ | |
489 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
490 | continue; | |
a94e8645 | 491 | |
43f3e411 | 492 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 493 | { |
14bc53a8 PA |
494 | if (callback (s)) |
495 | return true; | |
a94e8645 DE |
496 | continue; |
497 | } | |
43f3e411 DE |
498 | |
499 | /* If the user gave us an absolute path, try to find the file in | |
500 | this symtab and use its absolute path. */ | |
501 | if (real_path != NULL) | |
502 | { | |
503 | const char *fullname = symtab_to_fullname (s); | |
504 | ||
505 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
506 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7e785608 TV |
507 | gdb::unique_xmalloc_ptr<char> fullname_real_path |
508 | = gdb_realpath (fullname); | |
509 | fullname = fullname_real_path.get (); | |
43f3e411 DE |
510 | if (FILENAME_CMP (real_path, fullname) == 0) |
511 | { | |
14bc53a8 PA |
512 | if (callback (s)) |
513 | return true; | |
43f3e411 DE |
514 | continue; |
515 | } | |
516 | } | |
a94e8645 | 517 | } |
f8eba3c6 | 518 | } |
58d370e0 | 519 | |
14bc53a8 | 520 | return false; |
f8eba3c6 TT |
521 | } |
522 | ||
523 | /* Check for a symtab of a specific name; first in symtabs, then in | |
524 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
525 | in the symtab filename will also work. | |
526 | ||
14bc53a8 PA |
527 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
528 | true, the search stops. */ | |
f8eba3c6 TT |
529 | |
530 | void | |
531 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 532 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 533 | { |
14bc53a8 | 534 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
535 | |
536 | /* Here we are interested in canonicalizing an absolute path, not | |
537 | absolutizing a relative path. */ | |
538 | if (IS_ABSOLUTE_PATH (name)) | |
539 | { | |
14278e1f | 540 | real_path = gdb_realpath (name); |
14bc53a8 | 541 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
542 | } |
543 | ||
2030c079 | 544 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
545 | { |
546 | if (iterate_over_some_symtabs (name, real_path.get (), | |
547 | objfile->compunit_symtabs, NULL, | |
548 | callback)) | |
f8eba3c6 | 549 | return; |
14bc53a8 | 550 | } |
f8eba3c6 | 551 | |
c906108c SS |
552 | /* Same search rules as above apply here, but now we look thru the |
553 | psymtabs. */ | |
554 | ||
2030c079 | 555 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
556 | { |
557 | if (objfile->sf | |
558 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
559 | name, | |
560 | real_path.get (), | |
561 | callback)) | |
f8eba3c6 | 562 | return; |
14bc53a8 | 563 | } |
c906108c | 564 | } |
f8eba3c6 TT |
565 | |
566 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
567 | symtab, or NULL. */ | |
568 | ||
569 | struct symtab * | |
570 | lookup_symtab (const char *name) | |
571 | { | |
572 | struct symtab *result = NULL; | |
573 | ||
14bc53a8 PA |
574 | iterate_over_symtabs (name, [&] (symtab *symtab) |
575 | { | |
576 | result = symtab; | |
577 | return true; | |
578 | }); | |
579 | ||
f8eba3c6 TT |
580 | return result; |
581 | } | |
582 | ||
c906108c SS |
583 | \f |
584 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
585 | full method name, which consist of the class name (from T), the unadorned | |
586 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 587 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
588 | |
589 | char * | |
fba45db2 | 590 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
591 | { |
592 | int mangled_name_len; | |
593 | char *mangled_name; | |
594 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
595 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 596 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 597 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 598 | const char *newname = TYPE_NAME (type); |
c906108c SS |
599 | |
600 | /* Does the form of physname indicate that it is the full mangled name | |
601 | of a constructor (not just the args)? */ | |
602 | int is_full_physname_constructor; | |
603 | ||
604 | int is_constructor; | |
015a42b4 | 605 | int is_destructor = is_destructor_name (physname); |
c906108c | 606 | /* Need a new type prefix. */ |
e6a959d6 PA |
607 | const char *const_prefix = method->is_const ? "C" : ""; |
608 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
609 | char buf[20]; |
610 | int len = (newname == NULL ? 0 : strlen (newname)); | |
611 | ||
43630227 PS |
612 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
613 | or an operator name. */ | |
614 | if ((physname[0] == '_' && physname[1] == 'Z') | |
615 | || is_operator_name (field_name)) | |
235d1e03 EZ |
616 | return xstrdup (physname); |
617 | ||
015a42b4 | 618 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 619 | |
3e43a32a MS |
620 | is_constructor = is_full_physname_constructor |
621 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
622 | |
623 | if (!is_destructor) | |
61012eef | 624 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
625 | |
626 | if (is_destructor || is_full_physname_constructor) | |
627 | { | |
c5aa993b JM |
628 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
629 | strcpy (mangled_name, physname); | |
c906108c SS |
630 | return mangled_name; |
631 | } | |
632 | ||
633 | if (len == 0) | |
634 | { | |
8c042590 | 635 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
636 | } |
637 | else if (physname[0] == 't' || physname[0] == 'Q') | |
638 | { | |
639 | /* The physname for template and qualified methods already includes | |
c5aa993b | 640 | the class name. */ |
8c042590 | 641 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
642 | newname = NULL; |
643 | len = 0; | |
644 | } | |
645 | else | |
646 | { | |
8c042590 PM |
647 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
648 | volatile_prefix, len); | |
c906108c SS |
649 | } |
650 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 651 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 652 | |
433759f7 MS |
653 | mangled_name = (char *) xmalloc (mangled_name_len); |
654 | if (is_constructor) | |
655 | mangled_name[0] = '\0'; | |
656 | else | |
657 | strcpy (mangled_name, field_name); | |
658 | ||
c906108c SS |
659 | strcat (mangled_name, buf); |
660 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
661 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 662 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
663 | if (newname != NULL) |
664 | strcat (mangled_name, newname); | |
665 | ||
666 | strcat (mangled_name, physname); | |
667 | return (mangled_name); | |
668 | } | |
12af6855 | 669 | |
b250c185 | 670 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 671 | correctly allocated. */ |
eca864fe | 672 | |
b250c185 SW |
673 | void |
674 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 675 | const char *name, |
ccde22c0 | 676 | struct obstack *obstack) |
b250c185 | 677 | { |
c1b5c1eb | 678 | if (gsymbol->language () == language_ada) |
f85f34ed TT |
679 | { |
680 | if (name == NULL) | |
681 | { | |
682 | gsymbol->ada_mangled = 0; | |
683 | gsymbol->language_specific.obstack = obstack; | |
684 | } | |
685 | else | |
686 | { | |
687 | gsymbol->ada_mangled = 1; | |
615b3f62 | 688 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
689 | } |
690 | } | |
29df156d | 691 | else |
615b3f62 | 692 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
693 | } |
694 | ||
695 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 696 | |
0d5cff50 | 697 | const char * |
b250c185 SW |
698 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
699 | { | |
c1b5c1eb | 700 | if (gsymbol->language () == language_ada) |
f85f34ed TT |
701 | { |
702 | if (!gsymbol->ada_mangled) | |
703 | return NULL; | |
704 | /* Fall through. */ | |
705 | } | |
706 | ||
615b3f62 | 707 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
708 | } |
709 | ||
12af6855 | 710 | \f |
89aad1f9 | 711 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 712 | depending upon the language for the symbol. */ |
eca864fe | 713 | |
89aad1f9 | 714 | void |
d3ecddab CB |
715 | general_symbol_info::set_language (enum language language, |
716 | struct obstack *obstack) | |
89aad1f9 | 717 | { |
d3ecddab | 718 | m_language = language; |
c1b5c1eb CB |
719 | if (language == language_cplus |
720 | || language == language_d | |
721 | || language == language_go | |
722 | || language == language_objc | |
723 | || language == language_fortran) | |
89aad1f9 | 724 | { |
d3ecddab | 725 | symbol_set_demangled_name (this, NULL, obstack); |
f85f34ed | 726 | } |
c1b5c1eb | 727 | else if (language == language_ada) |
f85f34ed | 728 | { |
d3ecddab CB |
729 | gdb_assert (ada_mangled == 0); |
730 | language_specific.obstack = obstack; | |
89aad1f9 | 731 | } |
89aad1f9 EZ |
732 | else |
733 | { | |
d3ecddab | 734 | memset (&language_specific, 0, sizeof (language_specific)); |
89aad1f9 EZ |
735 | } |
736 | } | |
737 | ||
2de7ced7 DJ |
738 | /* Functions to initialize a symbol's mangled name. */ |
739 | ||
04a679b8 TT |
740 | /* Objects of this type are stored in the demangled name hash table. */ |
741 | struct demangled_name_entry | |
742 | { | |
3a494279 CB |
743 | demangled_name_entry (gdb::string_view mangled_name) |
744 | : mangled (mangled_name) {} | |
745 | ||
7bb43059 | 746 | gdb::string_view mangled; |
403772ef | 747 | enum language language; |
5396ae17 | 748 | gdb::unique_xmalloc_ptr<char> demangled; |
04a679b8 TT |
749 | }; |
750 | ||
751 | /* Hash function for the demangled name hash. */ | |
eca864fe | 752 | |
04a679b8 TT |
753 | static hashval_t |
754 | hash_demangled_name_entry (const void *data) | |
755 | { | |
19ba03f4 SM |
756 | const struct demangled_name_entry *e |
757 | = (const struct demangled_name_entry *) data; | |
433759f7 | 758 | |
1a6ff1a9 | 759 | return fast_hash (e->mangled.data (), e->mangled.length ()); |
04a679b8 TT |
760 | } |
761 | ||
762 | /* Equality function for the demangled name hash. */ | |
eca864fe | 763 | |
04a679b8 TT |
764 | static int |
765 | eq_demangled_name_entry (const void *a, const void *b) | |
766 | { | |
19ba03f4 SM |
767 | const struct demangled_name_entry *da |
768 | = (const struct demangled_name_entry *) a; | |
769 | const struct demangled_name_entry *db | |
770 | = (const struct demangled_name_entry *) b; | |
433759f7 | 771 | |
7bb43059 | 772 | return da->mangled == db->mangled; |
04a679b8 TT |
773 | } |
774 | ||
3a494279 CB |
775 | static void |
776 | free_demangled_name_entry (void *data) | |
777 | { | |
778 | struct demangled_name_entry *e | |
779 | = (struct demangled_name_entry *) data; | |
780 | ||
781 | e->~demangled_name_entry(); | |
782 | } | |
783 | ||
2de7ced7 DJ |
784 | /* Create the hash table used for demangled names. Each hash entry is |
785 | a pair of strings; one for the mangled name and one for the demangled | |
786 | name. The entry is hashed via just the mangled name. */ | |
787 | ||
788 | static void | |
0f14768a | 789 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
790 | { |
791 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 792 | The hash table code will round this up to the next prime number. |
2de7ced7 | 793 | Choosing a much larger table size wastes memory, and saves only about |
f8bab2d6 CB |
794 | 1% in symbol reading. However, if the minsym count is already |
795 | initialized (e.g. because symbol name setting was deferred to | |
796 | a background thread) we can initialize the hashtable with a count | |
797 | based on that, because we will almost certainly have at least that | |
798 | many entries. If we have a nonzero number but less than 256, | |
799 | we still stay with 256 to have some space for psymbols, etc. */ | |
800 | ||
801 | /* htab will expand the table when it is 3/4th full, so we account for that | |
802 | here. +2 to round up. */ | |
803 | int minsym_based_count = (per_bfd->minimal_symbol_count + 2) / 3 * 4; | |
804 | int count = std::max (per_bfd->minimal_symbol_count, minsym_based_count); | |
2de7ced7 | 805 | |
db92718b | 806 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
f8bab2d6 | 807 | (count, hash_demangled_name_entry, eq_demangled_name_entry, |
3a494279 | 808 | free_demangled_name_entry, xcalloc, xfree)); |
2de7ced7 | 809 | } |
12af6855 | 810 | |
d55c9a68 | 811 | /* See symtab.h */ |
12af6855 | 812 | |
d55c9a68 | 813 | char * |
2de7ced7 DJ |
814 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, |
815 | const char *mangled) | |
12af6855 | 816 | { |
12af6855 | 817 | char *demangled = NULL; |
8b302db8 | 818 | int i; |
12af6855 | 819 | |
c1b5c1eb CB |
820 | if (gsymbol->language () == language_unknown) |
821 | gsymbol->m_language = language_auto; | |
1bae87b9 | 822 | |
c1b5c1eb | 823 | if (gsymbol->language () != language_auto) |
1bae87b9 | 824 | { |
c1b5c1eb | 825 | const struct language_defn *lang = language_def (gsymbol->language ()); |
8b302db8 TT |
826 | |
827 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
828 | return demangled; | |
6aecb9c2 | 829 | } |
8b302db8 TT |
830 | |
831 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 832 | { |
8b302db8 TT |
833 | enum language l = (enum language) i; |
834 | const struct language_defn *lang = language_def (l); | |
835 | ||
836 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 837 | { |
c1b5c1eb | 838 | gsymbol->m_language = l; |
a766d390 DE |
839 | return demangled; |
840 | } | |
841 | } | |
842 | ||
2de7ced7 DJ |
843 | return NULL; |
844 | } | |
845 | ||
980cae7a | 846 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
847 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
848 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
849 | NUL-terminated, then this function assumes that NAME is already | |
850 | correctly saved (either permanently or with a lifetime tied to the | |
851 | objfile), and it will not be copied. | |
852 | ||
853 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 854 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 855 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
856 | |
857 | void | |
4d4eaa30 CB |
858 | general_symbol_info::compute_and_set_names (gdb::string_view linkage_name, |
859 | bool copy_name, | |
860 | objfile_per_bfd_storage *per_bfd, | |
861 | gdb::optional<hashval_t> hash) | |
2de7ced7 | 862 | { |
04a679b8 | 863 | struct demangled_name_entry **slot; |
2de7ced7 | 864 | |
4d4eaa30 | 865 | if (language () == language_ada) |
b06ead72 JB |
866 | { |
867 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 868 | we can save some space by not storing the demangled name. */ |
92174eea | 869 | if (!copy_name) |
4d4eaa30 | 870 | m_name = linkage_name.data (); |
04a679b8 | 871 | else |
869d8950 TT |
872 | m_name = obstack_strndup (&per_bfd->storage_obstack, |
873 | linkage_name.data (), | |
874 | linkage_name.length ()); | |
4d4eaa30 | 875 | symbol_set_demangled_name (this, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
876 | |
877 | return; | |
878 | } | |
879 | ||
84a1243b | 880 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 881 | create_demangled_names_hash (per_bfd); |
04a679b8 | 882 | |
31edb802 | 883 | struct demangled_name_entry entry (linkage_name); |
e76b2246 CB |
884 | if (!hash.has_value ()) |
885 | hash = hash_demangled_name_entry (&entry); | |
04a679b8 | 886 | slot = ((struct demangled_name_entry **) |
e76b2246 CB |
887 | htab_find_slot_with_hash (per_bfd->demangled_names_hash.get (), |
888 | &entry, *hash, INSERT)); | |
2de7ced7 | 889 | |
57d75002 CB |
890 | /* The const_cast is safe because the only reason it is already |
891 | initialized is if we purposefully set it from a background | |
892 | thread to avoid doing the work here. However, it is still | |
893 | allocated from the heap and needs to be freed by us, just | |
894 | like if we called symbol_find_demangled_name here. If this is | |
895 | nullptr, we call symbol_find_demangled_name below, but we put | |
896 | this smart pointer here to be sure that we don't leak this name. */ | |
897 | gdb::unique_xmalloc_ptr<char> demangled_name | |
898 | (const_cast<char *> (language_specific.demangled_name)); | |
899 | ||
2de7ced7 | 900 | /* If this name is not in the hash table, add it. */ |
a766d390 DE |
901 | if (*slot == NULL |
902 | /* A C version of the symbol may have already snuck into the table. | |
903 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
4d4eaa30 | 904 | || (language () == language_go && (*slot)->demangled == nullptr)) |
2de7ced7 | 905 | { |
0c921b21 CB |
906 | /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME |
907 | to true if the string might not be nullterminated. We have to make | |
908 | this copy because demangling needs a nullterminated string. */ | |
31edb802 | 909 | gdb::string_view linkage_name_copy; |
0c921b21 CB |
910 | if (copy_name) |
911 | { | |
31edb802 CB |
912 | char *alloc_name = (char *) alloca (linkage_name.length () + 1); |
913 | memcpy (alloc_name, linkage_name.data (), linkage_name.length ()); | |
914 | alloc_name[linkage_name.length ()] = '\0'; | |
0c921b21 | 915 | |
31edb802 CB |
916 | linkage_name_copy = gdb::string_view (alloc_name, |
917 | linkage_name.length ()); | |
0c921b21 CB |
918 | } |
919 | else | |
920 | linkage_name_copy = linkage_name; | |
921 | ||
57d75002 CB |
922 | if (demangled_name.get () == nullptr) |
923 | demangled_name.reset | |
924 | (symbol_find_demangled_name (this, linkage_name_copy.data ())); | |
2de7ced7 | 925 | |
04a679b8 | 926 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 927 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
928 | mangled name saved, and we don't have a demangled name. So, |
929 | you might think we could save a little space by not recording | |
930 | this in the hash table at all. | |
5396ae17 | 931 | |
04a679b8 TT |
932 | It turns out that it is actually important to still save such |
933 | an entry in the hash table, because storing this name gives | |
705b5767 | 934 | us better bcache hit rates for partial symbols. */ |
0c921b21 | 935 | if (!copy_name) |
04a679b8 | 936 | { |
224c3ddb SM |
937 | *slot |
938 | = ((struct demangled_name_entry *) | |
939 | obstack_alloc (&per_bfd->storage_obstack, | |
5396ae17 | 940 | sizeof (demangled_name_entry))); |
31edb802 | 941 | new (*slot) demangled_name_entry (linkage_name); |
04a679b8 TT |
942 | } |
943 | else | |
944 | { | |
945 | /* If we must copy the mangled name, put it directly after | |
5396ae17 | 946 | the struct so we can have a single allocation. */ |
224c3ddb SM |
947 | *slot |
948 | = ((struct demangled_name_entry *) | |
949 | obstack_alloc (&per_bfd->storage_obstack, | |
31edb802 CB |
950 | sizeof (demangled_name_entry) |
951 | + linkage_name.length () + 1)); | |
5396ae17 | 952 | char *mangled_ptr = reinterpret_cast<char *> (*slot + 1); |
31edb802 CB |
953 | memcpy (mangled_ptr, linkage_name.data (), linkage_name.length ()); |
954 | mangled_ptr [linkage_name.length ()] = '\0'; | |
3a494279 | 955 | new (*slot) demangled_name_entry |
31edb802 | 956 | (gdb::string_view (mangled_ptr, linkage_name.length ())); |
04a679b8 | 957 | } |
d55c9a68 | 958 | (*slot)->demangled = std::move (demangled_name); |
4d4eaa30 | 959 | (*slot)->language = language (); |
2de7ced7 | 960 | } |
4d4eaa30 CB |
961 | else if (language () == language_unknown || language () == language_auto) |
962 | m_language = (*slot)->language; | |
2de7ced7 | 963 | |
4d4eaa30 | 964 | m_name = (*slot)->mangled.data (); |
869d8950 TT |
965 | symbol_set_demangled_name (this, (*slot)->demangled.get (), |
966 | &per_bfd->storage_obstack); | |
2de7ced7 DJ |
967 | } |
968 | ||
c9d95fa3 | 969 | /* See symtab.h. */ |
22abf04a | 970 | |
0d5cff50 | 971 | const char * |
c9d95fa3 | 972 | general_symbol_info::natural_name () const |
22abf04a | 973 | { |
c1b5c1eb | 974 | switch (language ()) |
22abf04a | 975 | { |
1f8173e6 | 976 | case language_cplus: |
6aecb9c2 | 977 | case language_d: |
a766d390 | 978 | case language_go: |
1f8173e6 | 979 | case language_objc: |
f55ee35c | 980 | case language_fortran: |
c9d95fa3 CB |
981 | if (symbol_get_demangled_name (this) != NULL) |
982 | return symbol_get_demangled_name (this); | |
1f8173e6 PH |
983 | break; |
984 | case language_ada: | |
c9d95fa3 | 985 | return ada_decode_symbol (this); |
1f8173e6 PH |
986 | default: |
987 | break; | |
22abf04a | 988 | } |
4d4eaa30 | 989 | return linkage_name (); |
22abf04a DC |
990 | } |
991 | ||
c9d95fa3 | 992 | /* See symtab.h. */ |
eca864fe | 993 | |
0d5cff50 | 994 | const char * |
c9d95fa3 | 995 | general_symbol_info::demangled_name () const |
9cc0d196 | 996 | { |
c6e5ee5e SDJ |
997 | const char *dem_name = NULL; |
998 | ||
c1b5c1eb | 999 | switch (language ()) |
1f8173e6 PH |
1000 | { |
1001 | case language_cplus: | |
6aecb9c2 | 1002 | case language_d: |
a766d390 | 1003 | case language_go: |
1f8173e6 | 1004 | case language_objc: |
f55ee35c | 1005 | case language_fortran: |
c9d95fa3 | 1006 | dem_name = symbol_get_demangled_name (this); |
1f8173e6 PH |
1007 | break; |
1008 | case language_ada: | |
c9d95fa3 | 1009 | dem_name = ada_decode_symbol (this); |
1f8173e6 PH |
1010 | break; |
1011 | default: | |
1012 | break; | |
1013 | } | |
c6e5ee5e | 1014 | return dem_name; |
9cc0d196 | 1015 | } |
fe39c653 | 1016 | |
c9d95fa3 | 1017 | /* See symtab.h. */ |
eca864fe | 1018 | |
0d5cff50 | 1019 | const char * |
c9d95fa3 | 1020 | general_symbol_info::search_name () const |
fc062ac6 | 1021 | { |
c1b5c1eb | 1022 | if (language () == language_ada) |
4d4eaa30 | 1023 | return linkage_name (); |
1f8173e6 | 1024 | else |
c9d95fa3 | 1025 | return natural_name (); |
4725b721 | 1026 | } |
b5ec771e PA |
1027 | |
1028 | /* See symtab.h. */ | |
1029 | ||
1030 | bool | |
1031 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
1032 | const lookup_name_info &name) | |
1033 | { | |
1034 | symbol_name_matcher_ftype *name_match | |
c1b5c1eb | 1035 | = get_symbol_name_matcher (language_def (gsymbol->language ()), name); |
c9d95fa3 | 1036 | return name_match (gsymbol->search_name (), name, NULL); |
b5ec771e PA |
1037 | } |
1038 | ||
c906108c SS |
1039 | \f |
1040 | ||
ececd218 | 1041 | /* Return true if the two sections are the same, or if they could |
94277a38 DJ |
1042 | plausibly be copies of each other, one in an original object |
1043 | file and another in a separated debug file. */ | |
1044 | ||
ececd218 | 1045 | bool |
714835d5 UW |
1046 | matching_obj_sections (struct obj_section *obj_first, |
1047 | struct obj_section *obj_second) | |
94277a38 | 1048 | { |
714835d5 UW |
1049 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1050 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1051 | |
1052 | /* If they're the same section, then they match. */ | |
1053 | if (first == second) | |
ececd218 | 1054 | return true; |
94277a38 DJ |
1055 | |
1056 | /* If either is NULL, give up. */ | |
1057 | if (first == NULL || second == NULL) | |
ececd218 | 1058 | return false; |
94277a38 DJ |
1059 | |
1060 | /* This doesn't apply to absolute symbols. */ | |
1061 | if (first->owner == NULL || second->owner == NULL) | |
ececd218 | 1062 | return false; |
94277a38 DJ |
1063 | |
1064 | /* If they're in the same object file, they must be different sections. */ | |
1065 | if (first->owner == second->owner) | |
ececd218 | 1066 | return false; |
94277a38 DJ |
1067 | |
1068 | /* Check whether the two sections are potentially corresponding. They must | |
1069 | have the same size, address, and name. We can't compare section indexes, | |
1070 | which would be more reliable, because some sections may have been | |
1071 | stripped. */ | |
fd361982 | 1072 | if (bfd_section_size (first) != bfd_section_size (second)) |
ececd218 | 1073 | return false; |
94277a38 | 1074 | |
818f79f6 | 1075 | /* In-memory addresses may start at a different offset, relativize them. */ |
fd361982 AM |
1076 | if (bfd_section_vma (first) - bfd_get_start_address (first->owner) |
1077 | != bfd_section_vma (second) - bfd_get_start_address (second->owner)) | |
ececd218 | 1078 | return false; |
94277a38 | 1079 | |
fd361982 AM |
1080 | if (bfd_section_name (first) == NULL |
1081 | || bfd_section_name (second) == NULL | |
1082 | || strcmp (bfd_section_name (first), bfd_section_name (second)) != 0) | |
ececd218 | 1083 | return false; |
94277a38 DJ |
1084 | |
1085 | /* Otherwise check that they are in corresponding objfiles. */ | |
1086 | ||
9d7c67bf | 1087 | struct objfile *obj = NULL; |
2030c079 | 1088 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1089 | if (objfile->obfd == first->owner) |
1090 | { | |
1091 | obj = objfile; | |
1092 | break; | |
1093 | } | |
94277a38 DJ |
1094 | gdb_assert (obj != NULL); |
1095 | ||
1096 | if (obj->separate_debug_objfile != NULL | |
1097 | && obj->separate_debug_objfile->obfd == second->owner) | |
ececd218 | 1098 | return true; |
94277a38 DJ |
1099 | if (obj->separate_debug_objfile_backlink != NULL |
1100 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
ececd218 | 1101 | return true; |
94277a38 | 1102 | |
ececd218 | 1103 | return false; |
94277a38 | 1104 | } |
c5aa993b | 1105 | |
2097ae25 DE |
1106 | /* See symtab.h. */ |
1107 | ||
1108 | void | |
1109 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1110 | { |
77e371c0 | 1111 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1112 | |
1113 | /* If we know that this is not a text address, return failure. This is | |
1114 | necessary because we loop based on texthigh and textlow, which do | |
1115 | not include the data ranges. */ | |
77e371c0 | 1116 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1117 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1118 | return; |
c906108c | 1119 | |
2030c079 | 1120 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1121 | { |
1122 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1123 | |
aed57c53 TT |
1124 | if (objfile->sf) |
1125 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1126 | pc, section, 0); | |
1127 | if (cust) | |
1128 | return; | |
1129 | } | |
c906108c | 1130 | } |
c906108c | 1131 | \f |
f57d2163 DE |
1132 | /* Hash function for the symbol cache. */ |
1133 | ||
1134 | static unsigned int | |
1135 | hash_symbol_entry (const struct objfile *objfile_context, | |
1136 | const char *name, domain_enum domain) | |
1137 | { | |
1138 | unsigned int hash = (uintptr_t) objfile_context; | |
1139 | ||
1140 | if (name != NULL) | |
1141 | hash += htab_hash_string (name); | |
1142 | ||
2c26b84f DE |
1143 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1144 | to map to the same slot. */ | |
1145 | if (domain == STRUCT_DOMAIN) | |
1146 | hash += VAR_DOMAIN * 7; | |
1147 | else | |
1148 | hash += domain * 7; | |
f57d2163 DE |
1149 | |
1150 | return hash; | |
1151 | } | |
1152 | ||
1153 | /* Equality function for the symbol cache. */ | |
1154 | ||
1155 | static int | |
1156 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1157 | const struct objfile *objfile_context, | |
1158 | const char *name, domain_enum domain) | |
1159 | { | |
1160 | const char *slot_name; | |
1161 | domain_enum slot_domain; | |
1162 | ||
1163 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1164 | return 0; | |
1165 | ||
1166 | if (slot->objfile_context != objfile_context) | |
1167 | return 0; | |
1168 | ||
1169 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1170 | { | |
1171 | slot_name = slot->value.not_found.name; | |
1172 | slot_domain = slot->value.not_found.domain; | |
1173 | } | |
1174 | else | |
1175 | { | |
987012b8 | 1176 | slot_name = slot->value.found.symbol->search_name (); |
d12307c1 | 1177 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); |
f57d2163 DE |
1178 | } |
1179 | ||
1180 | /* NULL names match. */ | |
1181 | if (slot_name == NULL && name == NULL) | |
1182 | { | |
1183 | /* But there's no point in calling symbol_matches_domain in the | |
1184 | SYMBOL_SLOT_FOUND case. */ | |
1185 | if (slot_domain != domain) | |
1186 | return 0; | |
1187 | } | |
1188 | else if (slot_name != NULL && name != NULL) | |
1189 | { | |
b5ec771e PA |
1190 | /* It's important that we use the same comparison that was done |
1191 | the first time through. If the slot records a found symbol, | |
1192 | then this means using the symbol name comparison function of | |
987012b8 | 1193 | the symbol's language with symbol->search_name (). See |
b5ec771e PA |
1194 | dictionary.c. It also means using symbol_matches_domain for |
1195 | found symbols. See block.c. | |
f57d2163 DE |
1196 | |
1197 | If the slot records a not-found symbol, then require a precise match. | |
1198 | We could still be lax with whitespace like strcmp_iw though. */ | |
1199 | ||
1200 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1201 | { | |
1202 | if (strcmp (slot_name, name) != 0) | |
1203 | return 0; | |
1204 | if (slot_domain != domain) | |
1205 | return 0; | |
1206 | } | |
1207 | else | |
1208 | { | |
d12307c1 | 1209 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1210 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1211 | |
b5ec771e | 1212 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1213 | return 0; |
b5ec771e | 1214 | |
c1b5c1eb | 1215 | if (!symbol_matches_domain (sym->language (), slot_domain, domain)) |
f57d2163 DE |
1216 | return 0; |
1217 | } | |
1218 | } | |
1219 | else | |
1220 | { | |
1221 | /* Only one name is NULL. */ | |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | return 1; | |
1226 | } | |
1227 | ||
1228 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1229 | length array) in bytes. */ | |
1230 | ||
1231 | static size_t | |
1232 | symbol_cache_byte_size (unsigned int size) | |
1233 | { | |
1234 | return (sizeof (struct block_symbol_cache) | |
1235 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1236 | } | |
1237 | ||
1238 | /* Resize CACHE. */ | |
1239 | ||
1240 | static void | |
1241 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1242 | { | |
1243 | /* If there's no change in size, don't do anything. | |
1244 | All caches have the same size, so we can just compare with the size | |
1245 | of the global symbols cache. */ | |
1246 | if ((cache->global_symbols != NULL | |
1247 | && cache->global_symbols->size == new_size) | |
1248 | || (cache->global_symbols == NULL | |
1249 | && new_size == 0)) | |
1250 | return; | |
1251 | ||
82f910ea PW |
1252 | destroy_block_symbol_cache (cache->global_symbols); |
1253 | destroy_block_symbol_cache (cache->static_symbols); | |
f57d2163 DE |
1254 | |
1255 | if (new_size == 0) | |
1256 | { | |
1257 | cache->global_symbols = NULL; | |
1258 | cache->static_symbols = NULL; | |
1259 | } | |
1260 | else | |
1261 | { | |
1262 | size_t total_size = symbol_cache_byte_size (new_size); | |
1263 | ||
224c3ddb SM |
1264 | cache->global_symbols |
1265 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1266 | cache->static_symbols | |
1267 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1268 | cache->global_symbols->size = new_size; |
1269 | cache->static_symbols->size = new_size; | |
1270 | } | |
1271 | } | |
1272 | ||
f57d2163 DE |
1273 | /* Return the symbol cache of PSPACE. |
1274 | Create one if it doesn't exist yet. */ | |
1275 | ||
1276 | static struct symbol_cache * | |
1277 | get_symbol_cache (struct program_space *pspace) | |
1278 | { | |
3017b94d | 1279 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1280 | |
1281 | if (cache == NULL) | |
1282 | { | |
3017b94d TT |
1283 | cache = symbol_cache_key.emplace (pspace); |
1284 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1285 | } |
1286 | ||
1287 | return cache; | |
1288 | } | |
1289 | ||
f57d2163 DE |
1290 | /* Set the size of the symbol cache in all program spaces. */ |
1291 | ||
1292 | static void | |
1293 | set_symbol_cache_size (unsigned int new_size) | |
1294 | { | |
1295 | struct program_space *pspace; | |
1296 | ||
1297 | ALL_PSPACES (pspace) | |
1298 | { | |
3017b94d | 1299 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1300 | |
1301 | /* The pspace could have been created but not have a cache yet. */ | |
1302 | if (cache != NULL) | |
1303 | resize_symbol_cache (cache, new_size); | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | /* Called when symbol-cache-size is set. */ | |
1308 | ||
1309 | static void | |
eb4c3f4a | 1310 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1311 | struct cmd_list_element *c) |
1312 | { | |
1313 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1314 | { | |
1315 | /* Restore the previous value. | |
1316 | This is the value the "show" command prints. */ | |
1317 | new_symbol_cache_size = symbol_cache_size; | |
1318 | ||
1319 | error (_("Symbol cache size is too large, max is %u."), | |
1320 | MAX_SYMBOL_CACHE_SIZE); | |
1321 | } | |
1322 | symbol_cache_size = new_symbol_cache_size; | |
1323 | ||
1324 | set_symbol_cache_size (symbol_cache_size); | |
1325 | } | |
1326 | ||
1327 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1328 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1329 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1330 | failed (and thus this one will too), or NULL if the symbol is not present | |
1331 | in the cache. | |
d0509ba4 CB |
1332 | *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which |
1333 | can be used to save the result of a full lookup attempt. */ | |
f57d2163 | 1334 | |
d12307c1 | 1335 | static struct block_symbol |
f57d2163 | 1336 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1337 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1338 | const char *name, domain_enum domain, |
1339 | struct block_symbol_cache **bsc_ptr, | |
1340 | struct symbol_cache_slot **slot_ptr) | |
1341 | { | |
1342 | struct block_symbol_cache *bsc; | |
1343 | unsigned int hash; | |
1344 | struct symbol_cache_slot *slot; | |
1345 | ||
1346 | if (block == GLOBAL_BLOCK) | |
1347 | bsc = cache->global_symbols; | |
1348 | else | |
1349 | bsc = cache->static_symbols; | |
1350 | if (bsc == NULL) | |
1351 | { | |
1352 | *bsc_ptr = NULL; | |
1353 | *slot_ptr = NULL; | |
6640a367 | 1354 | return {}; |
f57d2163 DE |
1355 | } |
1356 | ||
1357 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1358 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 | 1359 | |
d0509ba4 CB |
1360 | *bsc_ptr = bsc; |
1361 | *slot_ptr = slot; | |
1362 | ||
f57d2163 DE |
1363 | if (eq_symbol_entry (slot, objfile_context, name, domain)) |
1364 | { | |
1365 | if (symbol_lookup_debug) | |
1366 | fprintf_unfiltered (gdb_stdlog, | |
1367 | "%s block symbol cache hit%s for %s, %s\n", | |
1368 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1369 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1370 | ? " (not found)" : "", | |
1371 | name, domain_name (domain)); | |
1372 | ++bsc->hits; | |
1373 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1374 | return SYMBOL_LOOKUP_FAILED; | |
1375 | return slot->value.found; | |
1376 | } | |
1377 | ||
2c26b84f DE |
1378 | /* Symbol is not present in the cache. */ |
1379 | ||
f57d2163 DE |
1380 | if (symbol_lookup_debug) |
1381 | { | |
1382 | fprintf_unfiltered (gdb_stdlog, | |
1383 | "%s block symbol cache miss for %s, %s\n", | |
1384 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1385 | name, domain_name (domain)); | |
1386 | } | |
1387 | ++bsc->misses; | |
6640a367 | 1388 | return {}; |
f57d2163 DE |
1389 | } |
1390 | ||
f57d2163 DE |
1391 | /* Mark SYMBOL as found in SLOT. |
1392 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1393 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1394 | necessarily the objfile the symbol was found in. */ | |
1395 | ||
1396 | static void | |
1397 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1398 | struct symbol_cache_slot *slot, | |
1399 | struct objfile *objfile_context, | |
d12307c1 PMR |
1400 | struct symbol *symbol, |
1401 | const struct block *block) | |
f57d2163 DE |
1402 | { |
1403 | if (bsc == NULL) | |
1404 | return; | |
1405 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1406 | { | |
1407 | ++bsc->collisions; | |
1408 | symbol_cache_clear_slot (slot); | |
1409 | } | |
1410 | slot->state = SYMBOL_SLOT_FOUND; | |
1411 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1412 | slot->value.found.symbol = symbol; |
1413 | slot->value.found.block = block; | |
f57d2163 DE |
1414 | } |
1415 | ||
1416 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1417 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1418 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1419 | ||
1420 | static void | |
1421 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1422 | struct symbol_cache_slot *slot, | |
1423 | struct objfile *objfile_context, | |
1424 | const char *name, domain_enum domain) | |
1425 | { | |
1426 | if (bsc == NULL) | |
1427 | return; | |
1428 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1429 | { | |
1430 | ++bsc->collisions; | |
1431 | symbol_cache_clear_slot (slot); | |
1432 | } | |
1433 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1434 | slot->objfile_context = objfile_context; | |
1435 | slot->value.not_found.name = xstrdup (name); | |
1436 | slot->value.not_found.domain = domain; | |
1437 | } | |
1438 | ||
1439 | /* Flush the symbol cache of PSPACE. */ | |
1440 | ||
1441 | static void | |
1442 | symbol_cache_flush (struct program_space *pspace) | |
1443 | { | |
3017b94d | 1444 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1445 | int pass; |
f57d2163 DE |
1446 | |
1447 | if (cache == NULL) | |
1448 | return; | |
1449 | if (cache->global_symbols == NULL) | |
1450 | { | |
1451 | gdb_assert (symbol_cache_size == 0); | |
1452 | gdb_assert (cache->static_symbols == NULL); | |
1453 | return; | |
1454 | } | |
1455 | ||
1456 | /* If the cache is untouched since the last flush, early exit. | |
1457 | This is important for performance during the startup of a program linked | |
1458 | with 100s (or 1000s) of shared libraries. */ | |
1459 | if (cache->global_symbols->misses == 0 | |
1460 | && cache->static_symbols->misses == 0) | |
1461 | return; | |
1462 | ||
1463 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1464 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1465 | ||
1466 | for (pass = 0; pass < 2; ++pass) | |
1467 | { | |
1468 | struct block_symbol_cache *bsc | |
1469 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1470 | unsigned int i; | |
1471 | ||
1472 | for (i = 0; i < bsc->size; ++i) | |
1473 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1474 | } | |
1475 | ||
1476 | cache->global_symbols->hits = 0; | |
1477 | cache->global_symbols->misses = 0; | |
1478 | cache->global_symbols->collisions = 0; | |
1479 | cache->static_symbols->hits = 0; | |
1480 | cache->static_symbols->misses = 0; | |
1481 | cache->static_symbols->collisions = 0; | |
1482 | } | |
1483 | ||
1484 | /* Dump CACHE. */ | |
1485 | ||
1486 | static void | |
1487 | symbol_cache_dump (const struct symbol_cache *cache) | |
1488 | { | |
1489 | int pass; | |
1490 | ||
1491 | if (cache->global_symbols == NULL) | |
1492 | { | |
1493 | printf_filtered (" <disabled>\n"); | |
1494 | return; | |
1495 | } | |
1496 | ||
1497 | for (pass = 0; pass < 2; ++pass) | |
1498 | { | |
1499 | const struct block_symbol_cache *bsc | |
1500 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1501 | unsigned int i; | |
1502 | ||
1503 | if (pass == 0) | |
1504 | printf_filtered ("Global symbols:\n"); | |
1505 | else | |
1506 | printf_filtered ("Static symbols:\n"); | |
1507 | ||
1508 | for (i = 0; i < bsc->size; ++i) | |
1509 | { | |
1510 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1511 | ||
1512 | QUIT; | |
1513 | ||
1514 | switch (slot->state) | |
1515 | { | |
1516 | case SYMBOL_SLOT_UNUSED: | |
1517 | break; | |
1518 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1519 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1520 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1521 | slot->value.not_found.name, |
1522 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1523 | break; |
1524 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1525 | { |
1526 | struct symbol *found = slot->value.found.symbol; | |
1527 | const struct objfile *context = slot->objfile_context; | |
1528 | ||
1529 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1530 | host_address_to_string (context), | |
987012b8 | 1531 | found->print_name (), |
d12307c1 PMR |
1532 | domain_name (SYMBOL_DOMAIN (found))); |
1533 | break; | |
1534 | } | |
f57d2163 DE |
1535 | } |
1536 | } | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | /* The "mt print symbol-cache" command. */ | |
1541 | ||
1542 | static void | |
510e5e56 | 1543 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1544 | { |
1545 | struct program_space *pspace; | |
1546 | ||
1547 | ALL_PSPACES (pspace) | |
1548 | { | |
1549 | struct symbol_cache *cache; | |
1550 | ||
1551 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1552 | pspace->num, | |
1553 | pspace->symfile_object_file != NULL | |
1554 | ? objfile_name (pspace->symfile_object_file) | |
1555 | : "(no object file)"); | |
1556 | ||
1557 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1558 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1559 | if (cache == NULL) |
1560 | printf_filtered (" <empty>\n"); | |
1561 | else | |
1562 | symbol_cache_dump (cache); | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | /* The "mt flush-symbol-cache" command. */ | |
1567 | ||
1568 | static void | |
510e5e56 | 1569 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1570 | { |
1571 | struct program_space *pspace; | |
1572 | ||
1573 | ALL_PSPACES (pspace) | |
1574 | { | |
1575 | symbol_cache_flush (pspace); | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | /* Print usage statistics of CACHE. */ | |
1580 | ||
1581 | static void | |
1582 | symbol_cache_stats (struct symbol_cache *cache) | |
1583 | { | |
1584 | int pass; | |
1585 | ||
1586 | if (cache->global_symbols == NULL) | |
1587 | { | |
1588 | printf_filtered (" <disabled>\n"); | |
1589 | return; | |
1590 | } | |
1591 | ||
1592 | for (pass = 0; pass < 2; ++pass) | |
1593 | { | |
1594 | const struct block_symbol_cache *bsc | |
1595 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1596 | ||
1597 | QUIT; | |
1598 | ||
1599 | if (pass == 0) | |
1600 | printf_filtered ("Global block cache stats:\n"); | |
1601 | else | |
1602 | printf_filtered ("Static block cache stats:\n"); | |
1603 | ||
1604 | printf_filtered (" size: %u\n", bsc->size); | |
1605 | printf_filtered (" hits: %u\n", bsc->hits); | |
1606 | printf_filtered (" misses: %u\n", bsc->misses); | |
1607 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | /* The "mt print symbol-cache-statistics" command. */ | |
1612 | ||
1613 | static void | |
510e5e56 | 1614 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1615 | { |
1616 | struct program_space *pspace; | |
1617 | ||
1618 | ALL_PSPACES (pspace) | |
1619 | { | |
1620 | struct symbol_cache *cache; | |
1621 | ||
1622 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1623 | pspace->num, | |
1624 | pspace->symfile_object_file != NULL | |
1625 | ? objfile_name (pspace->symfile_object_file) | |
1626 | : "(no object file)"); | |
1627 | ||
1628 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1629 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1630 | if (cache == NULL) |
1631 | printf_filtered (" empty, no stats available\n"); | |
1632 | else | |
1633 | symbol_cache_stats (cache); | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | /* This module's 'new_objfile' observer. */ | |
1638 | ||
1639 | static void | |
1640 | symtab_new_objfile_observer (struct objfile *objfile) | |
1641 | { | |
1642 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1643 | symbol_cache_flush (current_program_space); | |
1644 | } | |
1645 | ||
1646 | /* This module's 'free_objfile' observer. */ | |
1647 | ||
1648 | static void | |
1649 | symtab_free_objfile_observer (struct objfile *objfile) | |
1650 | { | |
1651 | symbol_cache_flush (objfile->pspace); | |
1652 | } | |
1653 | \f | |
c906108c SS |
1654 | /* Debug symbols usually don't have section information. We need to dig that |
1655 | out of the minimal symbols and stash that in the debug symbol. */ | |
1656 | ||
ccefe4c4 | 1657 | void |
907fc202 UW |
1658 | fixup_section (struct general_symbol_info *ginfo, |
1659 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1660 | { |
1661 | struct minimal_symbol *msym; | |
c906108c | 1662 | |
bccdca4a UW |
1663 | /* First, check whether a minimal symbol with the same name exists |
1664 | and points to the same address. The address check is required | |
1665 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1666 | point to the function descriptor, while the debug symbol will | |
1667 | point to the actual function code. */ | |
4d4eaa30 CB |
1668 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->linkage_name (), |
1669 | objfile); | |
907fc202 | 1670 | if (msym) |
efd66ac6 | 1671 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1672 | else |
19e2d14b KB |
1673 | { |
1674 | /* Static, function-local variables do appear in the linker | |
1675 | (minimal) symbols, but are frequently given names that won't | |
1676 | be found via lookup_minimal_symbol(). E.g., it has been | |
1677 | observed in frv-uclinux (ELF) executables that a static, | |
1678 | function-local variable named "foo" might appear in the | |
1679 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1680 | point in attempting to extend the lookup-by-name mechanism to | |
1681 | handle this case due to the fact that there can be multiple | |
1682 | names. | |
9af17804 | 1683 | |
19e2d14b KB |
1684 | So, instead, search the section table when lookup by name has |
1685 | failed. The ``addr'' and ``endaddr'' fields may have already | |
6a053cb1 TT |
1686 | been relocated. If so, the relocation offset needs to be |
1687 | subtracted from these values when performing the comparison. | |
1688 | We unconditionally subtract it, because, when no relocation | |
1689 | has been performed, the value will simply be zero. | |
9af17804 | 1690 | |
19e2d14b KB |
1691 | The address of the symbol whose section we're fixing up HAS |
1692 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1693 | the section isn't yet known and knowing the section is | |
1694 | necessary in order to add the correct relocation value. In | |
1695 | other words, we wouldn't even be in this function (attempting | |
1696 | to compute the section) if it were already known. | |
1697 | ||
1698 | Note that it is possible to search the minimal symbols | |
1699 | (subtracting the relocation value if necessary) to find the | |
1700 | matching minimal symbol, but this is overkill and much less | |
1701 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1702 | symbol, only its section. |
1703 | ||
19e2d14b KB |
1704 | Note that this technique (of doing a section table search) |
1705 | can fail when unrelocated section addresses overlap. For | |
1706 | this reason, we still attempt a lookup by name prior to doing | |
1707 | a search of the section table. */ | |
9af17804 | 1708 | |
19e2d14b | 1709 | struct obj_section *s; |
e27d198c | 1710 | int fallback = -1; |
433759f7 | 1711 | |
19e2d14b KB |
1712 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1713 | { | |
65cf3563 | 1714 | int idx = s - objfile->sections; |
6a053cb1 | 1715 | CORE_ADDR offset = objfile->section_offsets[idx]; |
19e2d14b | 1716 | |
e27d198c TT |
1717 | if (fallback == -1) |
1718 | fallback = idx; | |
1719 | ||
f1f6aadf PA |
1720 | if (obj_section_addr (s) - offset <= addr |
1721 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1722 | { |
19e2d14b KB |
1723 | ginfo->section = idx; |
1724 | return; | |
1725 | } | |
1726 | } | |
e27d198c TT |
1727 | |
1728 | /* If we didn't find the section, assume it is in the first | |
1729 | section. If there is no allocated section, then it hardly | |
1730 | matters what we pick, so just pick zero. */ | |
1731 | if (fallback == -1) | |
1732 | ginfo->section = 0; | |
1733 | else | |
1734 | ginfo->section = fallback; | |
19e2d14b | 1735 | } |
c906108c SS |
1736 | } |
1737 | ||
1738 | struct symbol * | |
fba45db2 | 1739 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1740 | { |
907fc202 UW |
1741 | CORE_ADDR addr; |
1742 | ||
c906108c SS |
1743 | if (!sym) |
1744 | return NULL; | |
1745 | ||
1994afbf DE |
1746 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1747 | return sym; | |
1748 | ||
907fc202 UW |
1749 | /* We either have an OBJFILE, or we can get at it from the sym's |
1750 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1751 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1752 | |
1753 | if (objfile == NULL) | |
08be3fe3 | 1754 | objfile = symbol_objfile (sym); |
907fc202 | 1755 | |
e27d198c TT |
1756 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1757 | return sym; | |
1758 | ||
907fc202 UW |
1759 | /* We should have an objfile by now. */ |
1760 | gdb_assert (objfile); | |
1761 | ||
1762 | switch (SYMBOL_CLASS (sym)) | |
1763 | { | |
1764 | case LOC_STATIC: | |
1765 | case LOC_LABEL: | |
907fc202 UW |
1766 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1767 | break; | |
1768 | case LOC_BLOCK: | |
2b1ffcfd | 1769 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1770 | break; |
1771 | ||
1772 | default: | |
1773 | /* Nothing else will be listed in the minsyms -- no use looking | |
1774 | it up. */ | |
1775 | return sym; | |
1776 | } | |
1777 | ||
468c0cbb | 1778 | fixup_section (sym, addr, objfile); |
c906108c SS |
1779 | |
1780 | return sym; | |
1781 | } | |
1782 | ||
b5ec771e PA |
1783 | /* See symtab.h. */ |
1784 | ||
1785 | demangle_for_lookup_info::demangle_for_lookup_info | |
1786 | (const lookup_name_info &lookup_name, language lang) | |
1787 | { | |
1788 | demangle_result_storage storage; | |
1789 | ||
c62446b1 PA |
1790 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1791 | { | |
1792 | gdb::unique_xmalloc_ptr<char> without_params | |
e0802d59 | 1793 | = cp_remove_params_if_any (lookup_name.c_str (), |
c62446b1 PA |
1794 | lookup_name.completion_mode ()); |
1795 | ||
1796 | if (without_params != NULL) | |
1797 | { | |
de63c46b PA |
1798 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1799 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1800 | lang, storage); | |
c62446b1 PA |
1801 | return; |
1802 | } | |
1803 | } | |
1804 | ||
de63c46b | 1805 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
e0802d59 | 1806 | m_demangled_name = lookup_name.c_str (); |
de63c46b | 1807 | else |
e0802d59 | 1808 | m_demangled_name = demangle_for_lookup (lookup_name.c_str (), |
de63c46b | 1809 | lang, storage); |
b5ec771e PA |
1810 | } |
1811 | ||
1812 | /* See symtab.h. */ | |
1813 | ||
1814 | const lookup_name_info & | |
1815 | lookup_name_info::match_any () | |
1816 | { | |
1817 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1818 | symbol names. */ | |
e0802d59 | 1819 | static const lookup_name_info lookup_name ("", symbol_name_match_type::FULL, |
b5ec771e PA |
1820 | true); |
1821 | ||
1822 | return lookup_name; | |
1823 | } | |
1824 | ||
f8eba3c6 | 1825 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1826 | lookup functions. The result can either be the input NAME |
1827 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1828 | |
2f408ecb | 1829 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1830 | Normally, Ada symbol lookups are performed using the encoded name |
1831 | rather than the demangled name, and so it might seem to make sense | |
1832 | for this function to return an encoded version of NAME. | |
1833 | Unfortunately, we cannot do this, because this function is used in | |
1834 | circumstances where it is not appropriate to try to encode NAME. | |
1835 | For instance, when displaying the frame info, we demangle the name | |
1836 | of each parameter, and then perform a symbol lookup inside our | |
1837 | function using that demangled name. In Ada, certain functions | |
1838 | have internally-generated parameters whose name contain uppercase | |
1839 | characters. Encoding those name would result in those uppercase | |
1840 | characters to become lowercase, and thus cause the symbol lookup | |
1841 | to fail. */ | |
c906108c | 1842 | |
2f408ecb | 1843 | const char * |
f8eba3c6 | 1844 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1845 | demangle_result_storage &storage) |
c906108c | 1846 | { |
9c37b5ae | 1847 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1848 | lookup, so we can always binary search. */ |
53c5240f | 1849 | if (lang == language_cplus) |
729051e6 | 1850 | { |
2f408ecb PA |
1851 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1852 | if (demangled_name != NULL) | |
1853 | return storage.set_malloc_ptr (demangled_name); | |
1854 | ||
1855 | /* If we were given a non-mangled name, canonicalize it | |
1856 | according to the language (so far only for C++). */ | |
1857 | std::string canon = cp_canonicalize_string (name); | |
1858 | if (!canon.empty ()) | |
1859 | return storage.swap_string (canon); | |
729051e6 | 1860 | } |
6aecb9c2 JB |
1861 | else if (lang == language_d) |
1862 | { | |
2f408ecb PA |
1863 | char *demangled_name = d_demangle (name, 0); |
1864 | if (demangled_name != NULL) | |
1865 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1866 | } |
a766d390 DE |
1867 | else if (lang == language_go) |
1868 | { | |
2f408ecb PA |
1869 | char *demangled_name = go_demangle (name, 0); |
1870 | if (demangled_name != NULL) | |
1871 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1872 | } |
729051e6 | 1873 | |
2f408ecb | 1874 | return name; |
f8eba3c6 TT |
1875 | } |
1876 | ||
5ffa0793 PA |
1877 | /* See symtab.h. */ |
1878 | ||
1879 | unsigned int | |
1880 | search_name_hash (enum language language, const char *search_name) | |
1881 | { | |
1882 | return language_def (language)->la_search_name_hash (search_name); | |
1883 | } | |
1884 | ||
cf901d3b | 1885 | /* See symtab.h. |
f8eba3c6 | 1886 | |
cf901d3b | 1887 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1888 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1889 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1890 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1891 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1892 | that there is C++ code below which can error(), but that probably |
1893 | doesn't affect these calls since they are looking for a known | |
1894 | variable and thus can probably assume it will never hit the C++ | |
1895 | code). */ | |
1896 | ||
d12307c1 | 1897 | struct block_symbol |
f8eba3c6 TT |
1898 | lookup_symbol_in_language (const char *name, const struct block *block, |
1899 | const domain_enum domain, enum language lang, | |
1993b719 | 1900 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1901 | { |
2f408ecb PA |
1902 | demangle_result_storage storage; |
1903 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1904 | |
de63c46b PA |
1905 | return lookup_symbol_aux (modified_name, |
1906 | symbol_name_match_type::FULL, | |
1907 | block, domain, lang, | |
2f408ecb | 1908 | is_a_field_of_this); |
fba7f19c EZ |
1909 | } |
1910 | ||
cf901d3b | 1911 | /* See symtab.h. */ |
53c5240f | 1912 | |
d12307c1 | 1913 | struct block_symbol |
53c5240f | 1914 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1915 | domain_enum domain, |
1916 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1917 | { |
1918 | return lookup_symbol_in_language (name, block, domain, | |
1919 | current_language->la_language, | |
2570f2b7 | 1920 | is_a_field_of_this); |
53c5240f PA |
1921 | } |
1922 | ||
cf901d3b | 1923 | /* See symtab.h. */ |
66a17cb6 | 1924 | |
de63c46b PA |
1925 | struct block_symbol |
1926 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1927 | domain_enum domain) | |
1928 | { | |
1929 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1930 | block, domain, language_asm, NULL); | |
1931 | } | |
1932 | ||
1933 | /* See symtab.h. */ | |
1934 | ||
d12307c1 | 1935 | struct block_symbol |
66a17cb6 TT |
1936 | lookup_language_this (const struct language_defn *lang, |
1937 | const struct block *block) | |
1938 | { | |
1939 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1940 | return {}; |
66a17cb6 | 1941 | |
cc485e62 DE |
1942 | if (symbol_lookup_debug > 1) |
1943 | { | |
1944 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1945 | ||
1946 | fprintf_unfiltered (gdb_stdlog, | |
1947 | "lookup_language_this (%s, %s (objfile %s))", | |
1948 | lang->la_name, host_address_to_string (block), | |
1949 | objfile_debug_name (objfile)); | |
1950 | } | |
1951 | ||
03de6823 | 1952 | while (block) |
66a17cb6 TT |
1953 | { |
1954 | struct symbol *sym; | |
1955 | ||
de63c46b PA |
1956 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1957 | symbol_name_match_type::SEARCH_NAME, | |
1958 | VAR_DOMAIN); | |
66a17cb6 | 1959 | if (sym != NULL) |
f149aabd | 1960 | { |
cc485e62 DE |
1961 | if (symbol_lookup_debug > 1) |
1962 | { | |
1963 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
987012b8 | 1964 | sym->print_name (), |
cc485e62 DE |
1965 | host_address_to_string (sym), |
1966 | host_address_to_string (block)); | |
1967 | } | |
d12307c1 | 1968 | return (struct block_symbol) {sym, block}; |
f149aabd | 1969 | } |
66a17cb6 | 1970 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1971 | break; |
66a17cb6 TT |
1972 | block = BLOCK_SUPERBLOCK (block); |
1973 | } | |
03de6823 | 1974 | |
cc485e62 DE |
1975 | if (symbol_lookup_debug > 1) |
1976 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1977 | return {}; |
66a17cb6 TT |
1978 | } |
1979 | ||
2dc3df72 TT |
1980 | /* Given TYPE, a structure/union, |
1981 | return 1 if the component named NAME from the ultimate target | |
1982 | structure/union is defined, otherwise, return 0. */ | |
1983 | ||
1984 | static int | |
1993b719 TT |
1985 | check_field (struct type *type, const char *name, |
1986 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1987 | { |
1988 | int i; | |
1989 | ||
1990 | /* The type may be a stub. */ | |
f168693b | 1991 | type = check_typedef (type); |
2dc3df72 TT |
1992 | |
1993 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1994 | { | |
1995 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1996 | ||
1997 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1998 | { |
1999 | is_a_field_of_this->type = type; | |
2000 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
2001 | return 1; | |
2002 | } | |
2dc3df72 TT |
2003 | } |
2004 | ||
2005 | /* C++: If it was not found as a data field, then try to return it | |
2006 | as a pointer to a method. */ | |
2007 | ||
2008 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
2009 | { | |
2010 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
2011 | { |
2012 | is_a_field_of_this->type = type; | |
2013 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
2014 | return 1; | |
2015 | } | |
2dc3df72 TT |
2016 | } |
2017 | ||
2018 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 2019 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2020 | return 1; |
2021 | ||
2022 | return 0; | |
2023 | } | |
2024 | ||
53c5240f | 2025 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2026 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2027 | |
d12307c1 | 2028 | static struct block_symbol |
de63c46b PA |
2029 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2030 | const struct block *block, | |
94af9270 | 2031 | const domain_enum domain, enum language language, |
1993b719 | 2032 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2033 | { |
d12307c1 | 2034 | struct block_symbol result; |
53c5240f | 2035 | const struct language_defn *langdef; |
406bc4de | 2036 | |
cc485e62 DE |
2037 | if (symbol_lookup_debug) |
2038 | { | |
2039 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2040 | ||
2041 | fprintf_unfiltered (gdb_stdlog, | |
2042 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2043 | name, host_address_to_string (block), | |
2044 | objfile != NULL | |
2045 | ? objfile_debug_name (objfile) : "NULL", | |
2046 | domain_name (domain), language_str (language)); | |
2047 | } | |
2048 | ||
9a146a11 EZ |
2049 | /* Make sure we do something sensible with is_a_field_of_this, since |
2050 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2051 | certainly use it later. If we don't set it, the contents of |
2052 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2053 | if (is_a_field_of_this != NULL) |
1993b719 | 2054 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2055 | |
e4051eeb DC |
2056 | /* Search specified block and its superiors. Don't search |
2057 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2058 | |
de63c46b | 2059 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2060 | if (result.symbol != NULL) |
cc485e62 DE |
2061 | { |
2062 | if (symbol_lookup_debug) | |
2063 | { | |
2064 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2065 | host_address_to_string (result.symbol)); |
cc485e62 | 2066 | } |
d12307c1 | 2067 | return result; |
cc485e62 | 2068 | } |
c906108c | 2069 | |
53c5240f | 2070 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2071 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2072 | |
2073 | langdef = language_def (language); | |
5f9a71c3 | 2074 | |
6592e36f TT |
2075 | /* Don't do this check if we are searching for a struct. It will |
2076 | not be found by check_field, but will be found by other | |
2077 | means. */ | |
2078 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2079 | { |
d12307c1 | 2080 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2081 | |
d12307c1 | 2082 | if (result.symbol) |
c906108c | 2083 | { |
d12307c1 | 2084 | struct type *t = result.symbol->type; |
9af17804 | 2085 | |
2b2d9e11 VP |
2086 | /* I'm not really sure that type of this can ever |
2087 | be typedefed; just be safe. */ | |
f168693b | 2088 | t = check_typedef (t); |
aa006118 | 2089 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2090 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2091 | |
2b2d9e11 VP |
2092 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2093 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2094 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2095 | langdef->la_name_of_this); |
9af17804 | 2096 | |
1993b719 | 2097 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2098 | { |
2099 | if (symbol_lookup_debug) | |
2100 | { | |
2101 | fprintf_unfiltered (gdb_stdlog, | |
2102 | "lookup_symbol_aux (...) = NULL\n"); | |
2103 | } | |
6640a367 | 2104 | return {}; |
cc485e62 | 2105 | } |
c906108c SS |
2106 | } |
2107 | } | |
2108 | ||
53c5240f | 2109 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2110 | up static and global variables. */ |
c906108c | 2111 | |
d12307c1 PMR |
2112 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2113 | if (result.symbol != NULL) | |
cc485e62 DE |
2114 | { |
2115 | if (symbol_lookup_debug) | |
2116 | { | |
2117 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2118 | host_address_to_string (result.symbol)); |
cc485e62 | 2119 | } |
d12307c1 | 2120 | return result; |
cc485e62 | 2121 | } |
c906108c | 2122 | |
774b6a14 TT |
2123 | /* Now search all static file-level symbols. Not strictly correct, |
2124 | but more useful than an error. */ | |
41f62f39 | 2125 | |
d12307c1 | 2126 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2127 | if (symbol_lookup_debug) |
2128 | { | |
2129 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2130 | result.symbol != NULL |
2131 | ? host_address_to_string (result.symbol) | |
2132 | : "NULL"); | |
cc485e62 | 2133 | } |
d12307c1 | 2134 | return result; |
41f62f39 JK |
2135 | } |
2136 | ||
e4051eeb | 2137 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2138 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2139 | |
d12307c1 | 2140 | static struct block_symbol |
de63c46b PA |
2141 | lookup_local_symbol (const char *name, |
2142 | symbol_name_match_type match_type, | |
2143 | const struct block *block, | |
74016e12 DE |
2144 | const domain_enum domain, |
2145 | enum language language) | |
8155455b DC |
2146 | { |
2147 | struct symbol *sym; | |
89a9d1b1 | 2148 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2149 | const char *scope = block_scope (block); |
2150 | ||
e4051eeb DC |
2151 | /* Check if either no block is specified or it's a global block. */ |
2152 | ||
89a9d1b1 | 2153 | if (static_block == NULL) |
6640a367 | 2154 | return {}; |
e4051eeb | 2155 | |
89a9d1b1 | 2156 | while (block != static_block) |
f61e8913 | 2157 | { |
de63c46b | 2158 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2159 | if (sym != NULL) |
d12307c1 | 2160 | return (struct block_symbol) {sym, block}; |
edb3359d | 2161 | |
f55ee35c | 2162 | if (language == language_cplus || language == language_fortran) |
13387711 | 2163 | { |
b926417a | 2164 | struct block_symbol blocksym |
d12307c1 PMR |
2165 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2166 | domain); | |
2167 | ||
b926417a TT |
2168 | if (blocksym.symbol != NULL) |
2169 | return blocksym; | |
13387711 SW |
2170 | } |
2171 | ||
edb3359d DJ |
2172 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2173 | break; | |
f61e8913 DC |
2174 | block = BLOCK_SUPERBLOCK (block); |
2175 | } | |
2176 | ||
3aee438b | 2177 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2178 | |
6640a367 | 2179 | return {}; |
f61e8913 DC |
2180 | } |
2181 | ||
cf901d3b | 2182 | /* See symtab.h. */ |
3a40aaa0 | 2183 | |
c0201579 | 2184 | struct objfile * |
3a40aaa0 UW |
2185 | lookup_objfile_from_block (const struct block *block) |
2186 | { | |
3a40aaa0 UW |
2187 | if (block == NULL) |
2188 | return NULL; | |
2189 | ||
2190 | block = block_global_block (block); | |
43f3e411 | 2191 | /* Look through all blockvectors. */ |
2030c079 | 2192 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2193 | { |
b669c953 | 2194 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2195 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2196 | GLOBAL_BLOCK)) | |
2197 | { | |
2198 | if (obj->separate_debug_objfile_backlink) | |
2199 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2200 | |
d8aeb77f TT |
2201 | return obj; |
2202 | } | |
2203 | } | |
3a40aaa0 UW |
2204 | |
2205 | return NULL; | |
2206 | } | |
2207 | ||
cf901d3b | 2208 | /* See symtab.h. */ |
f61e8913 | 2209 | |
5f9a71c3 | 2210 | struct symbol * |
de63c46b PA |
2211 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2212 | const struct block *block, | |
d1a2d36d | 2213 | const domain_enum domain) |
f61e8913 DC |
2214 | { |
2215 | struct symbol *sym; | |
f61e8913 | 2216 | |
cc485e62 DE |
2217 | if (symbol_lookup_debug > 1) |
2218 | { | |
2219 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2220 | ||
2221 | fprintf_unfiltered (gdb_stdlog, | |
2222 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2223 | name, host_address_to_string (block), | |
2224 | objfile_debug_name (objfile), | |
2225 | domain_name (domain)); | |
2226 | } | |
2227 | ||
de63c46b | 2228 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2229 | if (sym) |
8155455b | 2230 | { |
cc485e62 DE |
2231 | if (symbol_lookup_debug > 1) |
2232 | { | |
2233 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2234 | host_address_to_string (sym)); | |
2235 | } | |
21b556f4 | 2236 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2237 | } |
2238 | ||
cc485e62 DE |
2239 | if (symbol_lookup_debug > 1) |
2240 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2241 | return NULL; |
2242 | } | |
2243 | ||
cf901d3b | 2244 | /* See symtab.h. */ |
3a40aaa0 | 2245 | |
d12307c1 | 2246 | struct block_symbol |
efad9b6a | 2247 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2248 | enum block_enum block_index, |
3a40aaa0 | 2249 | const char *name, |
21b556f4 | 2250 | const domain_enum domain) |
3a40aaa0 | 2251 | { |
442853af CB |
2252 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2253 | ||
bde09ab7 | 2254 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2255 | { |
d12307c1 | 2256 | struct block_symbol result |
442853af | 2257 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2258 | |
442853af | 2259 | if (result.symbol != nullptr) |
d12307c1 | 2260 | return result; |
15d123c9 | 2261 | } |
56e3f43c | 2262 | |
6640a367 | 2263 | return {}; |
3a40aaa0 UW |
2264 | } |
2265 | ||
19630284 JB |
2266 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2267 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2268 | depending on whether or not we want to search global symbols or |
2269 | static symbols. */ | |
2270 | ||
d12307c1 | 2271 | static struct block_symbol |
c32e6a04 CB |
2272 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2273 | enum block_enum block_index, const char *name, | |
2274 | const domain_enum domain) | |
19630284 | 2275 | { |
ba715d7f JK |
2276 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2277 | ||
cc485e62 DE |
2278 | if (symbol_lookup_debug > 1) |
2279 | { | |
2280 | fprintf_unfiltered (gdb_stdlog, | |
2281 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2282 | objfile_debug_name (objfile), | |
2283 | block_index == GLOBAL_BLOCK | |
2284 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2285 | name, domain_name (domain)); | |
2286 | } | |
2287 | ||
de82891c TV |
2288 | struct block_symbol other; |
2289 | other.symbol = NULL; | |
b669c953 | 2290 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2291 | { |
43f3e411 DE |
2292 | const struct blockvector *bv; |
2293 | const struct block *block; | |
d12307c1 | 2294 | struct block_symbol result; |
43f3e411 DE |
2295 | |
2296 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2297 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2298 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2299 | result.block = block; | |
de82891c TV |
2300 | if (result.symbol == NULL) |
2301 | continue; | |
2302 | if (best_symbol (result.symbol, domain)) | |
a743abeb | 2303 | { |
de82891c TV |
2304 | other = result; |
2305 | break; | |
2306 | } | |
2307 | if (symbol_matches_domain (result.symbol->language (), | |
2308 | SYMBOL_DOMAIN (result.symbol), domain)) | |
2309 | { | |
2310 | struct symbol *better | |
2311 | = better_symbol (other.symbol, result.symbol, domain); | |
2312 | if (better != other.symbol) | |
cc485e62 | 2313 | { |
de82891c TV |
2314 | other.symbol = better; |
2315 | other.block = block; | |
cc485e62 | 2316 | } |
de82891c TV |
2317 | } |
2318 | } | |
d12307c1 | 2319 | |
de82891c TV |
2320 | if (other.symbol != NULL) |
2321 | { | |
2322 | if (symbol_lookup_debug > 1) | |
2323 | { | |
2324 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
2325 | host_address_to_string (other.symbol), | |
2326 | host_address_to_string (other.block)); | |
a743abeb | 2327 | } |
de82891c TV |
2328 | other.symbol = fixup_symbol_section (other.symbol, objfile); |
2329 | return other; | |
a743abeb | 2330 | } |
19630284 | 2331 | |
cc485e62 DE |
2332 | if (symbol_lookup_debug > 1) |
2333 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2334 | return {}; |
19630284 JB |
2335 | } |
2336 | ||
74016e12 | 2337 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2338 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2339 | and all associated separate debug objfiles. |
2340 | ||
2341 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2342 | because the outer loop will cause them to be searched too. This case is | |
2343 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2344 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2345 | |
d12307c1 | 2346 | static struct block_symbol |
422d65e7 DE |
2347 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2348 | const char *linkage_name, | |
2349 | domain_enum domain) | |
2350 | { | |
2351 | enum language lang = current_language->la_language; | |
e9ad22ee | 2352 | struct objfile *main_objfile; |
422d65e7 | 2353 | |
2f408ecb PA |
2354 | demangle_result_storage storage; |
2355 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2356 | ||
422d65e7 DE |
2357 | if (objfile->separate_debug_objfile_backlink) |
2358 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2359 | else | |
2360 | main_objfile = objfile; | |
2361 | ||
bde09ab7 | 2362 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2363 | { |
d12307c1 PMR |
2364 | struct block_symbol result; |
2365 | ||
2366 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2367 | modified_name, domain); | |
2368 | if (result.symbol == NULL) | |
2369 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2370 | modified_name, domain); | |
2371 | if (result.symbol != NULL) | |
2f408ecb | 2372 | return result; |
422d65e7 DE |
2373 | } |
2374 | ||
6640a367 | 2375 | return {}; |
422d65e7 DE |
2376 | } |
2377 | ||
08c23b0d TT |
2378 | /* A helper function that throws an exception when a symbol was found |
2379 | in a psymtab but not in a symtab. */ | |
2380 | ||
2381 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2382 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2383 | struct compunit_symtab *cust) |
08c23b0d TT |
2384 | { |
2385 | error (_("\ | |
2386 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2387 | %s may be an inlined function, or may be a template function\n \ | |
2388 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2389 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2390 | name, |
2391 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2392 | name, name); | |
08c23b0d TT |
2393 | } |
2394 | ||
74016e12 DE |
2395 | /* A helper function for various lookup routines that interfaces with |
2396 | the "quick" symbol table functions. */ | |
8155455b | 2397 | |
d12307c1 | 2398 | static struct block_symbol |
ddbcedf5 CB |
2399 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2400 | enum block_enum block_index, const char *name, | |
2401 | const domain_enum domain) | |
8155455b | 2402 | { |
43f3e411 | 2403 | struct compunit_symtab *cust; |
346d1dfe | 2404 | const struct blockvector *bv; |
8155455b | 2405 | const struct block *block; |
d12307c1 | 2406 | struct block_symbol result; |
8155455b | 2407 | |
ccefe4c4 | 2408 | if (!objfile->sf) |
6640a367 | 2409 | return {}; |
cc485e62 DE |
2410 | |
2411 | if (symbol_lookup_debug > 1) | |
2412 | { | |
2413 | fprintf_unfiltered (gdb_stdlog, | |
2414 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2415 | objfile_debug_name (objfile), | |
2416 | block_index == GLOBAL_BLOCK | |
2417 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2418 | name, domain_name (domain)); | |
2419 | } | |
2420 | ||
43f3e411 DE |
2421 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2422 | if (cust == NULL) | |
cc485e62 DE |
2423 | { |
2424 | if (symbol_lookup_debug > 1) | |
2425 | { | |
2426 | fprintf_unfiltered (gdb_stdlog, | |
2427 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2428 | } | |
6640a367 | 2429 | return {}; |
cc485e62 | 2430 | } |
8155455b | 2431 | |
43f3e411 | 2432 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2433 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2434 | result.symbol = block_lookup_symbol (block, name, |
2435 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2436 | if (result.symbol == NULL) |
43f3e411 | 2437 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2438 | |
2439 | if (symbol_lookup_debug > 1) | |
2440 | { | |
2441 | fprintf_unfiltered (gdb_stdlog, | |
2442 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2443 | host_address_to_string (result.symbol), |
cc485e62 DE |
2444 | host_address_to_string (block)); |
2445 | } | |
2446 | ||
d12307c1 PMR |
2447 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2448 | result.block = block; | |
2449 | return result; | |
8155455b DC |
2450 | } |
2451 | ||
cf901d3b | 2452 | /* See symtab.h. */ |
5f9a71c3 | 2453 | |
d12307c1 | 2454 | struct block_symbol |
f606139a DE |
2455 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2456 | const char *name, | |
5f9a71c3 | 2457 | const struct block *block, |
21b556f4 | 2458 | const domain_enum domain) |
5f9a71c3 | 2459 | { |
d12307c1 | 2460 | struct block_symbol result; |
5f9a71c3 | 2461 | |
d9060ba6 DE |
2462 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2463 | the current objfile. Searching the current objfile first is useful | |
2464 | for both matching user expectations as well as performance. */ | |
2465 | ||
d12307c1 PMR |
2466 | result = lookup_symbol_in_static_block (name, block, domain); |
2467 | if (result.symbol != NULL) | |
2468 | return result; | |
5f9a71c3 | 2469 | |
1994afbf DE |
2470 | /* If we didn't find a definition for a builtin type in the static block, |
2471 | search for it now. This is actually the right thing to do and can be | |
2472 | a massive performance win. E.g., when debugging a program with lots of | |
2473 | shared libraries we could search all of them only to find out the | |
2474 | builtin type isn't defined in any of them. This is common for types | |
2475 | like "void". */ | |
2476 | if (domain == VAR_DOMAIN) | |
2477 | { | |
2478 | struct gdbarch *gdbarch; | |
2479 | ||
2480 | if (block == NULL) | |
2481 | gdbarch = target_gdbarch (); | |
2482 | else | |
2483 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2484 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2485 | gdbarch, name); | |
2486 | result.block = NULL; | |
2487 | if (result.symbol != NULL) | |
2488 | return result; | |
1994afbf DE |
2489 | } |
2490 | ||
08724ab7 | 2491 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2492 | } |
2493 | ||
cf901d3b | 2494 | /* See symtab.h. */ |
5f9a71c3 | 2495 | |
d12307c1 | 2496 | struct block_symbol |
24d864bb DE |
2497 | lookup_symbol_in_static_block (const char *name, |
2498 | const struct block *block, | |
2499 | const domain_enum domain) | |
5f9a71c3 DC |
2500 | { |
2501 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2502 | struct symbol *sym; |
5f9a71c3 | 2503 | |
cc485e62 | 2504 | if (static_block == NULL) |
6640a367 | 2505 | return {}; |
cc485e62 DE |
2506 | |
2507 | if (symbol_lookup_debug) | |
2508 | { | |
2509 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2510 | ||
2511 | fprintf_unfiltered (gdb_stdlog, | |
2512 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2513 | " %s)\n", | |
2514 | name, | |
2515 | host_address_to_string (block), | |
2516 | objfile_debug_name (objfile), | |
2517 | domain_name (domain)); | |
2518 | } | |
2519 | ||
de63c46b PA |
2520 | sym = lookup_symbol_in_block (name, |
2521 | symbol_name_match_type::FULL, | |
2522 | static_block, domain); | |
cc485e62 DE |
2523 | if (symbol_lookup_debug) |
2524 | { | |
2525 | fprintf_unfiltered (gdb_stdlog, | |
2526 | "lookup_symbol_in_static_block (...) = %s\n", | |
2527 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2528 | } | |
d12307c1 | 2529 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2530 | } |
2531 | ||
af3768e9 DE |
2532 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2533 | 1) First search expanded symtabs, and if not found | |
2534 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2535 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2536 | ||
d12307c1 | 2537 | static struct block_symbol |
c32e6a04 | 2538 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2539 | const char *name, const domain_enum domain) |
2540 | { | |
d12307c1 | 2541 | struct block_symbol result; |
af3768e9 | 2542 | |
c32e6a04 CB |
2543 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2544 | ||
cc485e62 DE |
2545 | if (symbol_lookup_debug) |
2546 | { | |
2547 | fprintf_unfiltered (gdb_stdlog, | |
2548 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2549 | objfile_debug_name (objfile), | |
2550 | block_index == GLOBAL_BLOCK | |
2551 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2552 | name, domain_name (domain)); | |
2553 | } | |
2554 | ||
af3768e9 DE |
2555 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2556 | name, domain); | |
d12307c1 | 2557 | if (result.symbol != NULL) |
af3768e9 | 2558 | { |
cc485e62 DE |
2559 | if (symbol_lookup_debug) |
2560 | { | |
2561 | fprintf_unfiltered (gdb_stdlog, | |
2562 | "lookup_symbol_in_objfile (...) = %s" | |
2563 | " (in symtabs)\n", | |
d12307c1 | 2564 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2565 | } |
2566 | return result; | |
af3768e9 DE |
2567 | } |
2568 | ||
cc485e62 DE |
2569 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2570 | name, domain); | |
2571 | if (symbol_lookup_debug) | |
2572 | { | |
2573 | fprintf_unfiltered (gdb_stdlog, | |
2574 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2575 | result.symbol != NULL |
2576 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2577 | : "NULL", |
d12307c1 | 2578 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2579 | } |
af3768e9 DE |
2580 | return result; |
2581 | } | |
2582 | ||
d3214198 TV |
2583 | /* Find the language for partial symbol with NAME. */ |
2584 | ||
2585 | static enum language | |
2586 | find_quick_global_symbol_language (const char *name, const domain_enum domain) | |
2587 | { | |
2588 | for (objfile *objfile : current_program_space->objfiles ()) | |
2589 | { | |
2590 | if (objfile->sf && objfile->sf->qf | |
2591 | && objfile->sf->qf->lookup_global_symbol_language) | |
2592 | continue; | |
2593 | return language_unknown; | |
2594 | } | |
2595 | ||
2596 | for (objfile *objfile : current_program_space->objfiles ()) | |
2597 | { | |
2598 | bool symbol_found_p; | |
2599 | enum language lang | |
2600 | = objfile->sf->qf->lookup_global_symbol_language (objfile, name, domain, | |
2601 | &symbol_found_p); | |
2602 | if (!symbol_found_p) | |
2603 | continue; | |
2604 | return lang; | |
2605 | } | |
2606 | ||
2607 | return language_unknown; | |
2608 | } | |
2609 | ||
19630284 JB |
2610 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2611 | ||
9aa55206 | 2612 | struct global_or_static_sym_lookup_data |
19630284 JB |
2613 | { |
2614 | /* The name of the symbol we are searching for. */ | |
2615 | const char *name; | |
2616 | ||
2617 | /* The domain to use for our search. */ | |
2618 | domain_enum domain; | |
2619 | ||
9aa55206 CB |
2620 | /* The block index in which to search. */ |
2621 | enum block_enum block_index; | |
2622 | ||
19630284 | 2623 | /* The field where the callback should store the symbol if found. |
d12307c1 PMR |
2624 | It should be initialized to {NULL, NULL} before the search is started. */ |
2625 | struct block_symbol result; | |
19630284 JB |
2626 | }; |
2627 | ||
2628 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
9aa55206 CB |
2629 | It searches by name for a symbol in the block given by BLOCK_INDEX of the |
2630 | given OBJFILE. The arguments for the search are passed via CB_DATA, which | |
2631 | in reality is a pointer to struct global_or_static_sym_lookup_data. */ | |
19630284 JB |
2632 | |
2633 | static int | |
9aa55206 CB |
2634 | lookup_symbol_global_or_static_iterator_cb (struct objfile *objfile, |
2635 | void *cb_data) | |
19630284 | 2636 | { |
9aa55206 CB |
2637 | struct global_or_static_sym_lookup_data *data = |
2638 | (struct global_or_static_sym_lookup_data *) cb_data; | |
19630284 | 2639 | |
d12307c1 PMR |
2640 | gdb_assert (data->result.symbol == NULL |
2641 | && data->result.block == NULL); | |
19630284 | 2642 | |
9aa55206 | 2643 | data->result = lookup_symbol_in_objfile (objfile, data->block_index, |
af3768e9 | 2644 | data->name, data->domain); |
19630284 JB |
2645 | |
2646 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2647 | keep going. */ | |
d12307c1 | 2648 | return (data->result.symbol != NULL); |
19630284 JB |
2649 | } |
2650 | ||
9aa55206 CB |
2651 | /* This function contains the common code of lookup_{global,static}_symbol. |
2652 | OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is | |
2653 | the objfile to start the lookup in. */ | |
5f9a71c3 | 2654 | |
9aa55206 CB |
2655 | static struct block_symbol |
2656 | lookup_global_or_static_symbol (const char *name, | |
2657 | enum block_enum block_index, | |
2658 | struct objfile *objfile, | |
2659 | const domain_enum domain) | |
5f9a71c3 | 2660 | { |
f57d2163 | 2661 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2662 | struct block_symbol result; |
9aa55206 | 2663 | struct global_or_static_sym_lookup_data lookup_data; |
f57d2163 DE |
2664 | struct block_symbol_cache *bsc; |
2665 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2666 | |
9aa55206 CB |
2667 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2668 | gdb_assert (objfile == nullptr || block_index == GLOBAL_BLOCK); | |
f57d2163 DE |
2669 | |
2670 | /* First see if we can find the symbol in the cache. | |
2671 | This works because we use the current objfile to qualify the lookup. */ | |
9aa55206 | 2672 | result = symbol_cache_lookup (cache, objfile, block_index, name, domain, |
d12307c1 PMR |
2673 | &bsc, &slot); |
2674 | if (result.symbol != NULL) | |
f57d2163 | 2675 | { |
d12307c1 | 2676 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2677 | return {}; |
d12307c1 | 2678 | return result; |
f57d2163 DE |
2679 | } |
2680 | ||
626ca2c0 | 2681 | /* Do a global search (of global blocks, heh). */ |
d12307c1 | 2682 | if (result.symbol == NULL) |
f57d2163 DE |
2683 | { |
2684 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2685 | lookup_data.name = name; | |
9aa55206 | 2686 | lookup_data.block_index = block_index; |
f57d2163 DE |
2687 | lookup_data.domain = domain; |
2688 | gdbarch_iterate_over_objfiles_in_search_order | |
08feed99 | 2689 | (objfile != NULL ? objfile->arch () : target_gdbarch (), |
9aa55206 | 2690 | lookup_symbol_global_or_static_iterator_cb, &lookup_data, objfile); |
d12307c1 | 2691 | result = lookup_data.result; |
f57d2163 | 2692 | } |
6a3ca067 | 2693 | |
d12307c1 PMR |
2694 | if (result.symbol != NULL) |
2695 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2696 | else |
2697 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2698 | ||
d12307c1 | 2699 | return result; |
5f9a71c3 DC |
2700 | } |
2701 | ||
9aa55206 CB |
2702 | /* See symtab.h. */ |
2703 | ||
2704 | struct block_symbol | |
2705 | lookup_static_symbol (const char *name, const domain_enum domain) | |
2706 | { | |
2707 | return lookup_global_or_static_symbol (name, STATIC_BLOCK, nullptr, domain); | |
2708 | } | |
2709 | ||
2710 | /* See symtab.h. */ | |
2711 | ||
2712 | struct block_symbol | |
2713 | lookup_global_symbol (const char *name, | |
2714 | const struct block *block, | |
2715 | const domain_enum domain) | |
2716 | { | |
d3d32391 AB |
2717 | /* If a block was passed in, we want to search the corresponding |
2718 | global block first. This yields "more expected" behavior, and is | |
2719 | needed to support 'FILENAME'::VARIABLE lookups. */ | |
2720 | const struct block *global_block = block_global_block (block); | |
70bc38f5 | 2721 | symbol *sym = NULL; |
d3d32391 AB |
2722 | if (global_block != nullptr) |
2723 | { | |
70bc38f5 TV |
2724 | sym = lookup_symbol_in_block (name, |
2725 | symbol_name_match_type::FULL, | |
2726 | global_block, domain); | |
2727 | if (sym != NULL && best_symbol (sym, domain)) | |
d3d32391 AB |
2728 | return { sym, global_block }; |
2729 | } | |
2730 | ||
9aa55206 | 2731 | struct objfile *objfile = lookup_objfile_from_block (block); |
70bc38f5 TV |
2732 | block_symbol bs |
2733 | = lookup_global_or_static_symbol (name, GLOBAL_BLOCK, objfile, domain); | |
2734 | if (better_symbol (sym, bs.symbol, domain) == sym) | |
2735 | return { sym, global_block }; | |
2736 | else | |
2737 | return bs; | |
9aa55206 CB |
2738 | } |
2739 | ||
ececd218 | 2740 | bool |
4186eb54 KS |
2741 | symbol_matches_domain (enum language symbol_language, |
2742 | domain_enum symbol_domain, | |
2743 | domain_enum domain) | |
2744 | { | |
2745 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2746 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2747 | if (symbol_language == language_cplus | |
2748 | || symbol_language == language_d | |
65547233 TT |
2749 | || symbol_language == language_ada |
2750 | || symbol_language == language_rust) | |
4186eb54 KS |
2751 | { |
2752 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2753 | && symbol_domain == STRUCT_DOMAIN) | |
ececd218 | 2754 | return true; |
4186eb54 KS |
2755 | } |
2756 | /* For all other languages, strict match is required. */ | |
2757 | return (symbol_domain == domain); | |
2758 | } | |
2759 | ||
cf901d3b | 2760 | /* See symtab.h. */ |
c906108c | 2761 | |
ccefe4c4 TT |
2762 | struct type * |
2763 | lookup_transparent_type (const char *name) | |
c906108c | 2764 | { |
ccefe4c4 TT |
2765 | return current_language->la_lookup_transparent_type (name); |
2766 | } | |
9af17804 | 2767 | |
ccefe4c4 TT |
2768 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2769 | "quick" symbol table functions. */ | |
357e46e7 | 2770 | |
ccefe4c4 | 2771 | static struct type * |
ddbcedf5 CB |
2772 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2773 | enum block_enum block_index, | |
ccefe4c4 TT |
2774 | const char *name) |
2775 | { | |
43f3e411 | 2776 | struct compunit_symtab *cust; |
346d1dfe | 2777 | const struct blockvector *bv; |
582942f4 | 2778 | const struct block *block; |
ccefe4c4 | 2779 | struct symbol *sym; |
c906108c | 2780 | |
ccefe4c4 TT |
2781 | if (!objfile->sf) |
2782 | return NULL; | |
43f3e411 DE |
2783 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2784 | STRUCT_DOMAIN); | |
2785 | if (cust == NULL) | |
ccefe4c4 | 2786 | return NULL; |
c906108c | 2787 | |
43f3e411 | 2788 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2789 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2790 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2791 | block_find_non_opaque_type, NULL); | |
2792 | if (sym == NULL) | |
43f3e411 | 2793 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2794 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2795 | return SYMBOL_TYPE (sym); | |
2796 | } | |
08c23b0d | 2797 | |
b2e2f908 DE |
2798 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2799 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2800 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2801 | ||
2802 | static struct type * | |
ddbcedf5 CB |
2803 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2804 | enum block_enum block_index, | |
b2e2f908 DE |
2805 | const char *name) |
2806 | { | |
b2e2f908 DE |
2807 | const struct blockvector *bv; |
2808 | const struct block *block; | |
2809 | const struct symbol *sym; | |
2810 | ||
b669c953 | 2811 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2812 | { |
2813 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2814 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2815 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2816 | block_find_non_opaque_type, NULL); | |
2817 | if (sym != NULL) | |
2818 | { | |
2819 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2820 | return SYMBOL_TYPE (sym); | |
2821 | } | |
2822 | } | |
c906108c | 2823 | |
ccefe4c4 | 2824 | return NULL; |
b368761e | 2825 | } |
c906108c | 2826 | |
b368761e DC |
2827 | /* The standard implementation of lookup_transparent_type. This code |
2828 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2829 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2830 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2831 | global blocks. */ |
c906108c SS |
2832 | |
2833 | struct type * | |
b368761e | 2834 | basic_lookup_transparent_type (const char *name) |
c906108c | 2835 | { |
ccefe4c4 | 2836 | struct type *t; |
c906108c SS |
2837 | |
2838 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2839 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2840 | of the desired name as a global, then do psymtab-to-symtab |
2841 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2842 | |
2030c079 | 2843 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2844 | { |
2845 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2846 | if (t) | |
2847 | return t; | |
2848 | } | |
c906108c | 2849 | |
2030c079 | 2850 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2851 | { |
2852 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2853 | if (t) | |
2854 | return t; | |
2855 | } | |
c906108c SS |
2856 | |
2857 | /* Now search the static file-level symbols. | |
2858 | Not strictly correct, but more useful than an error. | |
2859 | Do the symtab's first, then | |
c378eb4e | 2860 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2861 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2862 | conversion on the fly and return the found symbol. */ |
c906108c | 2863 | |
2030c079 | 2864 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2865 | { |
2866 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2867 | if (t) | |
2868 | return t; | |
2869 | } | |
c906108c | 2870 | |
2030c079 | 2871 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2872 | { |
2873 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2874 | if (t) | |
2875 | return t; | |
2876 | } | |
ccefe4c4 | 2877 | |
c906108c SS |
2878 | return (struct type *) 0; |
2879 | } | |
2880 | ||
6969f124 | 2881 | /* See symtab.h. */ |
f8eba3c6 | 2882 | |
6969f124 | 2883 | bool |
b5ec771e PA |
2884 | iterate_over_symbols (const struct block *block, |
2885 | const lookup_name_info &name, | |
f8eba3c6 | 2886 | const domain_enum domain, |
14bc53a8 | 2887 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2888 | { |
4eeaa230 DE |
2889 | struct block_iterator iter; |
2890 | struct symbol *sym; | |
f8eba3c6 | 2891 | |
358d6ab3 | 2892 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2893 | { |
c1b5c1eb | 2894 | if (symbol_matches_domain (sym->language (), SYMBOL_DOMAIN (sym), domain)) |
f8eba3c6 | 2895 | { |
7e41c8db KS |
2896 | struct block_symbol block_sym = {sym, block}; |
2897 | ||
2898 | if (!callback (&block_sym)) | |
6969f124 | 2899 | return false; |
f8eba3c6 | 2900 | } |
f8eba3c6 | 2901 | } |
6969f124 | 2902 | return true; |
f8eba3c6 TT |
2903 | } |
2904 | ||
6a3dbf1b TT |
2905 | /* See symtab.h. */ |
2906 | ||
2907 | bool | |
2908 | iterate_over_symbols_terminated | |
2909 | (const struct block *block, | |
2910 | const lookup_name_info &name, | |
2911 | const domain_enum domain, | |
2912 | gdb::function_view<symbol_found_callback_ftype> callback) | |
2913 | { | |
2914 | if (!iterate_over_symbols (block, name, domain, callback)) | |
2915 | return false; | |
2916 | struct block_symbol block_sym = {nullptr, block}; | |
2917 | return callback (&block_sym); | |
2918 | } | |
2919 | ||
43f3e411 DE |
2920 | /* Find the compunit symtab associated with PC and SECTION. |
2921 | This will read in debug info as necessary. */ | |
c906108c | 2922 | |
43f3e411 DE |
2923 | struct compunit_symtab * |
2924 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2925 | { |
43f3e411 | 2926 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2927 | CORE_ADDR distance = 0; |
77e371c0 | 2928 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2929 | |
2930 | /* If we know that this is not a text address, return failure. This is | |
2931 | necessary because we loop based on the block's high and low code | |
2932 | addresses, which do not include the data ranges, and because | |
2933 | we call find_pc_sect_psymtab which has a similar restriction based | |
2934 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2935 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2936 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2937 | return NULL; |
c906108c SS |
2938 | |
2939 | /* Search all symtabs for the one whose file contains our address, and which | |
2940 | is the smallest of all the ones containing the address. This is designed | |
2941 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2942 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2943 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2944 | ||
2945 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2946 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2947 | been read in already via the dependency mechanism. |
2948 | It might be swifter to create several symtabs with the same name | |
2949 | like xcoff does (I'm not sure). | |
2950 | ||
2951 | It also happens for objfiles that have their functions reordered. | |
2952 | For these, the symtab we are looking for is not necessarily read in. */ | |
2953 | ||
2030c079 | 2954 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2955 | { |
b669c953 | 2956 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2957 | { |
582942f4 | 2958 | const struct block *b; |
d8aeb77f | 2959 | const struct blockvector *bv; |
43f3e411 | 2960 | |
d8aeb77f TT |
2961 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2962 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2963 | |
d8aeb77f TT |
2964 | if (BLOCK_START (b) <= pc |
2965 | && BLOCK_END (b) > pc | |
2966 | && (distance == 0 | |
2967 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2968 | { | |
2969 | /* For an objfile that has its functions reordered, | |
2970 | find_pc_psymtab will find the proper partial symbol table | |
2971 | and we simply return its corresponding symtab. */ | |
2972 | /* In order to better support objfiles that contain both | |
2973 | stabs and coff debugging info, we continue on if a psymtab | |
2974 | can't be found. */ | |
2975 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2976 | { | |
2977 | struct compunit_symtab *result; | |
2978 | ||
2979 | result | |
2980 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2981 | msymbol, | |
2982 | pc, | |
2983 | section, | |
2984 | 0); | |
2985 | if (result != NULL) | |
2986 | return result; | |
2987 | } | |
2988 | if (section != 0) | |
2989 | { | |
2990 | struct block_iterator iter; | |
2991 | struct symbol *sym = NULL; | |
c906108c | 2992 | |
d8aeb77f TT |
2993 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2994 | { | |
2995 | fixup_symbol_section (sym, obj_file); | |
2996 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2997 | sym), | |
2998 | section)) | |
2999 | break; | |
3000 | } | |
3001 | if (sym == NULL) | |
3002 | continue; /* No symbol in this symtab matches | |
3003 | section. */ | |
3004 | } | |
3005 | distance = BLOCK_END (b) - BLOCK_START (b); | |
3006 | best_cust = cust; | |
3007 | } | |
3008 | } | |
3009 | } | |
c906108c | 3010 | |
43f3e411 DE |
3011 | if (best_cust != NULL) |
3012 | return best_cust; | |
c906108c | 3013 | |
072cabfe DE |
3014 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
3015 | ||
2030c079 | 3016 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
3017 | { |
3018 | struct compunit_symtab *result; | |
3019 | ||
3020 | if (!objf->sf) | |
3021 | continue; | |
3022 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
3023 | msymbol, | |
3024 | pc, section, | |
3025 | 1); | |
3026 | if (result != NULL) | |
3027 | return result; | |
3028 | } | |
ccefe4c4 TT |
3029 | |
3030 | return NULL; | |
c906108c SS |
3031 | } |
3032 | ||
43f3e411 DE |
3033 | /* Find the compunit symtab associated with PC. |
3034 | This will read in debug info as necessary. | |
3035 | Backward compatibility, no section. */ | |
c906108c | 3036 | |
43f3e411 DE |
3037 | struct compunit_symtab * |
3038 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 3039 | { |
43f3e411 | 3040 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 3041 | } |
71a3c369 TT |
3042 | |
3043 | /* See symtab.h. */ | |
3044 | ||
3045 | struct symbol * | |
3046 | find_symbol_at_address (CORE_ADDR address) | |
3047 | { | |
2030c079 | 3048 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3049 | { |
3050 | if (objfile->sf == NULL | |
3051 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
3052 | continue; | |
71a3c369 | 3053 | |
aed57c53 TT |
3054 | struct compunit_symtab *symtab |
3055 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
3056 | if (symtab != NULL) | |
3057 | { | |
3058 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 3059 | |
aed57c53 | 3060 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 3061 | { |
582942f4 | 3062 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
3063 | struct block_iterator iter; |
3064 | struct symbol *sym; | |
3065 | ||
3066 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3067 | { | |
3068 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3069 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3070 | return sym; | |
3071 | } | |
71a3c369 | 3072 | } |
aed57c53 TT |
3073 | } |
3074 | } | |
71a3c369 TT |
3075 | |
3076 | return NULL; | |
3077 | } | |
3078 | ||
c906108c | 3079 | \f |
c5aa993b | 3080 | |
7e73cedf | 3081 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3082 | Return a structure containing a symtab pointer, a line number, |
3083 | and a pc range for the entire source line. | |
3084 | The value's .pc field is NOT the specified pc. | |
3085 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3086 | use the line that ends there. Otherwise, in that case, the line | |
3087 | that begins there is used. */ | |
3088 | ||
3089 | /* The big complication here is that a line may start in one file, and end just | |
3090 | before the start of another file. This usually occurs when you #include | |
3091 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3092 | range, we must search all symtabs associated with this compilation unit, and | |
3093 | find the one whose first PC is closer than that of the next line in this | |
3094 | symtab. */ | |
3095 | ||
c906108c | 3096 | struct symtab_and_line |
714835d5 | 3097 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3098 | { |
43f3e411 | 3099 | struct compunit_symtab *cust; |
52f0bd74 AC |
3100 | struct linetable *l; |
3101 | int len; | |
52f0bd74 | 3102 | struct linetable_entry *item; |
346d1dfe | 3103 | const struct blockvector *bv; |
7cbd4a93 | 3104 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3105 | |
3106 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3107 | ||
3108 | struct linetable_entry *best = NULL; | |
3109 | CORE_ADDR best_end = 0; | |
3110 | struct symtab *best_symtab = 0; | |
3111 | ||
3112 | /* Store here the first line number | |
3113 | of a file which contains the line at the smallest pc after PC. | |
3114 | If we don't find a line whose range contains PC, | |
3115 | we will use a line one less than this, | |
3116 | with a range from the start of that file to the first line's pc. */ | |
3117 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3118 | |
3119 | /* Info on best line seen in this file. */ | |
3120 | ||
3121 | struct linetable_entry *prev; | |
3122 | ||
3123 | /* If this pc is not from the current frame, | |
3124 | it is the address of the end of a call instruction. | |
3125 | Quite likely that is the start of the following statement. | |
3126 | But what we want is the statement containing the instruction. | |
3127 | Fudge the pc to make sure we get that. */ | |
3128 | ||
b77b1eb7 JB |
3129 | /* It's tempting to assume that, if we can't find debugging info for |
3130 | any function enclosing PC, that we shouldn't search for line | |
3131 | number info, either. However, GAS can emit line number info for | |
3132 | assembly files --- very helpful when debugging hand-written | |
3133 | assembly code. In such a case, we'd have no debug info for the | |
3134 | function, but we would have line info. */ | |
648f4f79 | 3135 | |
c906108c SS |
3136 | if (notcurrent) |
3137 | pc -= 1; | |
3138 | ||
c5aa993b | 3139 | /* elz: added this because this function returned the wrong |
c906108c | 3140 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3141 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3142 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3143 | taken to be the one of the line before the pc. */ |
3144 | ||
c906108c | 3145 | /* RT: Further explanation: |
c5aa993b | 3146 | |
c906108c SS |
3147 | * We have stubs (trampolines) inserted between procedures. |
3148 | * | |
3149 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3150 | * exists in the main image. | |
3151 | * | |
3152 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3153 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3154 | * the others appear as text. E.g.: |
3155 | * | |
9af17804 | 3156 | * Minimal symbol table for main image |
c906108c SS |
3157 | * main: code for main (text symbol) |
3158 | * shr1: stub (trampoline symbol) | |
3159 | * foo: code for foo (text symbol) | |
3160 | * ... | |
3161 | * Minimal symbol table for "shr1" image: | |
3162 | * ... | |
3163 | * shr1: code for shr1 (text symbol) | |
3164 | * ... | |
3165 | * | |
3166 | * So the code below is trying to detect if we are in the stub | |
3167 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3168 | * and if found, do the symbolization from the real-code address | |
3169 | * rather than the stub address. | |
3170 | * | |
3171 | * Assumptions being made about the minimal symbol table: | |
3172 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3173 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3174 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3175 | * symbol (the "foo" text symbol for example) and will not |
3176 | * return the trampoline. | |
3177 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3178 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3179 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3180 | * check for the address being the same, to avoid an |
3181 | * infinite recursion. | |
3182 | */ | |
c5aa993b | 3183 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3184 | if (msymbol.minsym != NULL) |
3185 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3186 | { |
77e371c0 | 3187 | struct bound_minimal_symbol mfunsym |
c9d95fa3 | 3188 | = lookup_minimal_symbol_text (msymbol.minsym->linkage_name (), |
77e371c0 TT |
3189 | NULL); |
3190 | ||
3191 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3192 | /* I eliminated this warning since it is coming out |
3193 | * in the following situation: | |
3194 | * gdb shmain // test program with shared libraries | |
3195 | * (gdb) break shr1 // function in shared lib | |
3196 | * Warning: In stub for ... | |
9af17804 | 3197 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3198 | * so of course we can't find the real func/line info, |
3199 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3200 | * So I commented out the warning. RT */ |
3e43a32a | 3201 | /* warning ("In stub for %s; unable to find real function/line info", |
987012b8 | 3202 | msymbol->linkage_name ()); */ |
c378eb4e | 3203 | ; |
c5aa993b | 3204 | /* fall through */ |
77e371c0 TT |
3205 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3206 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3207 | /* Avoid infinite recursion */ |
c378eb4e | 3208 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3209 | /* warning ("In stub for %s; unable to find real function/line info", |
987012b8 | 3210 | msymbol->linkage_name ()); */ |
c378eb4e | 3211 | ; |
c5aa993b JM |
3212 | /* fall through */ |
3213 | else | |
dd69bf7a KB |
3214 | { |
3215 | /* Detect an obvious case of infinite recursion. If this | |
3216 | should occur, we'd like to know about it, so error out, | |
3217 | fatally. */ | |
3218 | if (BMSYMBOL_VALUE_ADDRESS (mfunsym) == pc) | |
3219 | internal_error (__FILE__, __LINE__, | |
3220 | _("Infinite recursion detected in find_pc_sect_line;" | |
3221 | "please file a bug report")); | |
3222 | ||
3223 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); | |
3224 | } | |
c5aa993b | 3225 | } |
c906108c | 3226 | |
51abb421 PA |
3227 | symtab_and_line val; |
3228 | val.pspace = current_program_space; | |
c906108c | 3229 | |
43f3e411 DE |
3230 | cust = find_pc_sect_compunit_symtab (pc, section); |
3231 | if (cust == NULL) | |
c906108c | 3232 | { |
c378eb4e | 3233 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3234 | if (notcurrent) |
3235 | pc++; | |
3236 | val.pc = pc; | |
3237 | return val; | |
3238 | } | |
3239 | ||
43f3e411 | 3240 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3241 | |
3242 | /* Look at all the symtabs that share this blockvector. | |
3243 | They all have the same apriori range, that we found was right; | |
3244 | but they have different line tables. */ | |
3245 | ||
5accd1a0 | 3246 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3247 | { |
3248 | /* Find the best line in this symtab. */ | |
43f3e411 | 3249 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3250 | if (!l) |
c5aa993b | 3251 | continue; |
c906108c SS |
3252 | len = l->nitems; |
3253 | if (len <= 0) | |
3254 | { | |
3255 | /* I think len can be zero if the symtab lacks line numbers | |
3256 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3257 | I'm not sure which, and maybe it depends on the symbol | |
3258 | reader). */ | |
3259 | continue; | |
3260 | } | |
3261 | ||
3262 | prev = NULL; | |
c378eb4e | 3263 | item = l->item; /* Get first line info. */ |
c906108c SS |
3264 | |
3265 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3266 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3267 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3268 | alt = item; |
c906108c | 3269 | |
b926417a | 3270 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3271 | const struct linetable_entry & lhs)->bool |
3272 | { | |
b926417a | 3273 | return comp_pc < lhs.pc; |
7cbe16e9 | 3274 | }; |
c906108c | 3275 | |
7cbe16e9 SR |
3276 | struct linetable_entry *first = item; |
3277 | struct linetable_entry *last = item + len; | |
3278 | item = std::upper_bound (first, last, pc, pc_compare); | |
3279 | if (item != first) | |
3d92a3e3 AB |
3280 | { |
3281 | /* Found a matching item. Skip backwards over any end of | |
3282 | sequence markers. */ | |
3283 | for (prev = item - 1; prev->line == 0 && prev != first; prev--) | |
3284 | /* Nothing. */; | |
3285 | } | |
c906108c SS |
3286 | |
3287 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3288 | item points at the next line. If we ran off the end of the linetable |
3289 | (pc >= start of the last line), then prev == item. If pc < start of | |
3290 | the first line, prev will not be set. */ | |
c906108c SS |
3291 | |
3292 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3293 | If so, record this file, and its best line, as best so far. Don't |
3294 | save prev if it represents the end of a function (i.e. line number | |
3295 | 0) instead of a real line. */ | |
c906108c | 3296 | |
083ae935 | 3297 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3298 | { |
3299 | best = prev; | |
43f3e411 | 3300 | best_symtab = iter_s; |
25d53da1 | 3301 | |
8c95582d AB |
3302 | /* If during the binary search we land on a non-statement entry, |
3303 | scan backward through entries at the same address to see if | |
3304 | there is an entry marked as is-statement. In theory this | |
3305 | duplication should have been removed from the line table | |
3306 | during construction, this is just a double check. If the line | |
3307 | table has had the duplication removed then this should be | |
3308 | pretty cheap. */ | |
3309 | if (!best->is_stmt) | |
3310 | { | |
3311 | struct linetable_entry *tmp = best; | |
3312 | while (tmp > first && (tmp - 1)->pc == tmp->pc | |
3313 | && (tmp - 1)->line != 0 && !tmp->is_stmt) | |
3314 | --tmp; | |
3315 | if (tmp->is_stmt) | |
3316 | best = tmp; | |
3317 | } | |
3318 | ||
25d53da1 KB |
3319 | /* Discard BEST_END if it's before the PC of the current BEST. */ |
3320 | if (best_end <= best->pc) | |
3321 | best_end = 0; | |
c906108c | 3322 | } |
25d53da1 KB |
3323 | |
3324 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3325 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3326 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3327 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3328 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3329 | best_end = item->pc; |
c906108c SS |
3330 | } |
3331 | ||
3332 | if (!best_symtab) | |
3333 | { | |
e86e87f7 DJ |
3334 | /* If we didn't find any line number info, just return zeros. |
3335 | We used to return alt->line - 1 here, but that could be | |
3336 | anywhere; if we don't have line number info for this PC, | |
3337 | don't make some up. */ | |
3338 | val.pc = pc; | |
c906108c | 3339 | } |
e8717518 FF |
3340 | else if (best->line == 0) |
3341 | { | |
3342 | /* If our best fit is in a range of PC's for which no line | |
3343 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3344 | find any valid line information. */ |
e8717518 FF |
3345 | val.pc = pc; |
3346 | } | |
c906108c SS |
3347 | else |
3348 | { | |
8c95582d | 3349 | val.is_stmt = best->is_stmt; |
c906108c SS |
3350 | val.symtab = best_symtab; |
3351 | val.line = best->line; | |
3352 | val.pc = best->pc; | |
3353 | if (best_end && (!alt || best_end < alt->pc)) | |
3354 | val.end = best_end; | |
3355 | else if (alt) | |
3356 | val.end = alt->pc; | |
3357 | else | |
3358 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3359 | } | |
3360 | val.section = section; | |
3361 | return val; | |
3362 | } | |
3363 | ||
c378eb4e | 3364 | /* Backward compatibility (no section). */ |
c906108c SS |
3365 | |
3366 | struct symtab_and_line | |
fba45db2 | 3367 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3368 | { |
714835d5 | 3369 | struct obj_section *section; |
c906108c SS |
3370 | |
3371 | section = find_pc_overlay (pc); | |
3372 | if (pc_in_unmapped_range (pc, section)) | |
3373 | pc = overlay_mapped_address (pc, section); | |
3374 | return find_pc_sect_line (pc, section, notcurrent); | |
3375 | } | |
34248c3a DE |
3376 | |
3377 | /* See symtab.h. */ | |
3378 | ||
3379 | struct symtab * | |
3380 | find_pc_line_symtab (CORE_ADDR pc) | |
3381 | { | |
3382 | struct symtab_and_line sal; | |
3383 | ||
3384 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3385 | There are currently no callers that ever pass non-zero. */ | |
3386 | sal = find_pc_line (pc, 0); | |
3387 | return sal.symtab; | |
3388 | } | |
c906108c | 3389 | \f |
c906108c SS |
3390 | /* Find line number LINE in any symtab whose name is the same as |
3391 | SYMTAB. | |
3392 | ||
3393 | If found, return the symtab that contains the linetable in which it was | |
3394 | found, set *INDEX to the index in the linetable of the best entry | |
ececd218 | 3395 | found, and set *EXACT_MATCH to true if the value returned is an |
c906108c SS |
3396 | exact match. |
3397 | ||
3398 | If not found, return NULL. */ | |
3399 | ||
50641945 | 3400 | struct symtab * |
5accd1a0 | 3401 | find_line_symtab (struct symtab *sym_tab, int line, |
ececd218 | 3402 | int *index, bool *exact_match) |
c906108c | 3403 | { |
6f43c46f | 3404 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3405 | |
3406 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3407 | so far seen. */ | |
3408 | ||
3409 | int best_index; | |
3410 | struct linetable *best_linetable; | |
3411 | struct symtab *best_symtab; | |
3412 | ||
3413 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3414 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3415 | best_symtab = sym_tab; | |
f8eba3c6 | 3416 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3417 | if (best_index < 0 || !exact) |
3418 | { | |
3419 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3420 | another symtab with the same name. In the case of xcoff, |
3421 | multiple csects for one source file (produced by IBM's FORTRAN | |
3422 | compiler) produce multiple symtabs (this is unavoidable | |
3423 | assuming csects can be at arbitrary places in memory and that | |
3424 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3425 | |
3426 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3427 | or 0 if none has been seen so far. |
3428 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3429 | int best; |
3430 | ||
c906108c SS |
3431 | if (best_index >= 0) |
3432 | best = best_linetable->item[best_index].line; | |
3433 | else | |
3434 | best = 0; | |
3435 | ||
2030c079 | 3436 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3437 | { |
3438 | if (objfile->sf) | |
3439 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3440 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3441 | } |
51432cca | 3442 | |
2030c079 | 3443 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3444 | { |
b669c953 | 3445 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3446 | { |
3447 | for (symtab *s : compunit_filetabs (cu)) | |
3448 | { | |
3449 | struct linetable *l; | |
3450 | int ind; | |
3451 | ||
3452 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3453 | continue; | |
3454 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3455 | symtab_to_fullname (s)) != 0) | |
3456 | continue; | |
3457 | l = SYMTAB_LINETABLE (s); | |
3458 | ind = find_line_common (l, line, &exact, 0); | |
3459 | if (ind >= 0) | |
3460 | { | |
3461 | if (exact) | |
3462 | { | |
3463 | best_index = ind; | |
3464 | best_linetable = l; | |
3465 | best_symtab = s; | |
3466 | goto done; | |
3467 | } | |
3468 | if (best == 0 || l->item[ind].line < best) | |
3469 | { | |
3470 | best = l->item[ind].line; | |
3471 | best_index = ind; | |
3472 | best_linetable = l; | |
3473 | best_symtab = s; | |
3474 | } | |
3475 | } | |
3476 | } | |
3477 | } | |
3478 | } | |
c906108c | 3479 | } |
c5aa993b | 3480 | done: |
c906108c SS |
3481 | if (best_index < 0) |
3482 | return NULL; | |
3483 | ||
3484 | if (index) | |
3485 | *index = best_index; | |
3486 | if (exact_match) | |
ececd218 | 3487 | *exact_match = (exact != 0); |
c906108c SS |
3488 | |
3489 | return best_symtab; | |
3490 | } | |
f8eba3c6 TT |
3491 | |
3492 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3493 | exactly match LINE. Returns an empty vector if there are no exact |
3494 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3495 | |
67d89901 | 3496 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3497 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3498 | struct linetable_entry **best_item) | |
3499 | { | |
c656bca5 | 3500 | int start = 0; |
67d89901 | 3501 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3502 | |
3503 | /* First, collect all the PCs that are at this line. */ | |
3504 | while (1) | |
3505 | { | |
3506 | int was_exact; | |
3507 | int idx; | |
3508 | ||
8435453b DE |
3509 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3510 | start); | |
f8eba3c6 TT |
3511 | if (idx < 0) |
3512 | break; | |
3513 | ||
3514 | if (!was_exact) | |
3515 | { | |
8435453b | 3516 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 | 3517 | |
8c95582d AB |
3518 | if (*best_item == NULL |
3519 | || (item->line < (*best_item)->line && item->is_stmt)) | |
f8eba3c6 TT |
3520 | *best_item = item; |
3521 | ||
3522 | break; | |
3523 | } | |
3524 | ||
67d89901 | 3525 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3526 | start = idx + 1; |
3527 | } | |
3528 | ||
3529 | return result; | |
3530 | } | |
3531 | ||
c906108c SS |
3532 | \f |
3533 | /* Set the PC value for a given source file and line number and return true. | |
ececd218 | 3534 | Returns false for invalid line number (and sets the PC to 0). |
c906108c SS |
3535 | The source file is specified with a struct symtab. */ |
3536 | ||
ececd218 | 3537 | bool |
fba45db2 | 3538 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3539 | { |
3540 | struct linetable *l; | |
3541 | int ind; | |
3542 | ||
3543 | *pc = 0; | |
3544 | if (symtab == 0) | |
ececd218 | 3545 | return false; |
c906108c SS |
3546 | |
3547 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3548 | if (symtab != NULL) | |
3549 | { | |
8435453b | 3550 | l = SYMTAB_LINETABLE (symtab); |
c906108c | 3551 | *pc = l->item[ind].pc; |
ececd218 | 3552 | return true; |
c906108c SS |
3553 | } |
3554 | else | |
ececd218 | 3555 | return false; |
c906108c SS |
3556 | } |
3557 | ||
3558 | /* Find the range of pc values in a line. | |
3559 | Store the starting pc of the line into *STARTPTR | |
3560 | and the ending pc (start of next line) into *ENDPTR. | |
ececd218 CB |
3561 | Returns true to indicate success. |
3562 | Returns false if could not find the specified line. */ | |
c906108c | 3563 | |
ececd218 | 3564 | bool |
fba45db2 KB |
3565 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3566 | CORE_ADDR *endptr) | |
c906108c SS |
3567 | { |
3568 | CORE_ADDR startaddr; | |
3569 | struct symtab_and_line found_sal; | |
3570 | ||
3571 | startaddr = sal.pc; | |
c5aa993b | 3572 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
ececd218 | 3573 | return false; |
c906108c SS |
3574 | |
3575 | /* This whole function is based on address. For example, if line 10 has | |
3576 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3577 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3578 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3579 | This also insures that we never give a range like "starts at 0x134 | |
3580 | and ends at 0x12c". */ | |
3581 | ||
3582 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3583 | if (found_sal.line != sal.line) | |
3584 | { | |
3585 | /* The specified line (sal) has zero bytes. */ | |
3586 | *startptr = found_sal.pc; | |
3587 | *endptr = found_sal.pc; | |
3588 | } | |
3589 | else | |
3590 | { | |
3591 | *startptr = found_sal.pc; | |
3592 | *endptr = found_sal.end; | |
3593 | } | |
ececd218 | 3594 | return true; |
c906108c SS |
3595 | } |
3596 | ||
3597 | /* Given a line table and a line number, return the index into the line | |
3598 | table for the pc of the nearest line whose number is >= the specified one. | |
3599 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3600 | START is the index at which to start searching the line table. |
c906108c SS |
3601 | |
3602 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3603 | ||
3604 | static int | |
aa1ee363 | 3605 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3606 | int *exact_match, int start) |
c906108c | 3607 | { |
52f0bd74 AC |
3608 | int i; |
3609 | int len; | |
c906108c SS |
3610 | |
3611 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3612 | or 0 if none has been seen so far. | |
3613 | BEST_INDEX identifies the item for it. */ | |
3614 | ||
3615 | int best_index = -1; | |
3616 | int best = 0; | |
3617 | ||
b7589f7d DJ |
3618 | *exact_match = 0; |
3619 | ||
c906108c SS |
3620 | if (lineno <= 0) |
3621 | return -1; | |
3622 | if (l == 0) | |
3623 | return -1; | |
3624 | ||
3625 | len = l->nitems; | |
f8eba3c6 | 3626 | for (i = start; i < len; i++) |
c906108c | 3627 | { |
aa1ee363 | 3628 | struct linetable_entry *item = &(l->item[i]); |
c906108c | 3629 | |
8c95582d AB |
3630 | /* Ignore non-statements. */ |
3631 | if (!item->is_stmt) | |
3632 | continue; | |
3633 | ||
c906108c SS |
3634 | if (item->line == lineno) |
3635 | { | |
3636 | /* Return the first (lowest address) entry which matches. */ | |
3637 | *exact_match = 1; | |
3638 | return i; | |
3639 | } | |
3640 | ||
3641 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3642 | { | |
3643 | best = item->line; | |
3644 | best_index = i; | |
3645 | } | |
3646 | } | |
3647 | ||
3648 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3649 | return best_index; |
3650 | } | |
3651 | ||
ececd218 | 3652 | bool |
fba45db2 | 3653 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3654 | { |
3655 | struct symtab_and_line sal; | |
433759f7 | 3656 | |
c906108c SS |
3657 | sal = find_pc_line (pc, 0); |
3658 | *startptr = sal.pc; | |
3659 | *endptr = sal.end; | |
3660 | return sal.symtab != 0; | |
3661 | } | |
3662 | ||
cd2bb709 PA |
3663 | /* Helper for find_function_start_sal. Does most of the work, except |
3664 | setting the sal's symbol. */ | |
aab2f208 | 3665 | |
cd2bb709 PA |
3666 | static symtab_and_line |
3667 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3668 | bool funfirstline) | |
aab2f208 | 3669 | { |
42ddae10 | 3670 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3671 | |
6e22494e JK |
3672 | if (funfirstline && sal.symtab != NULL |
3673 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3674 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3675 | { | |
08feed99 | 3676 | struct gdbarch *gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
141c5cc4 | 3677 | |
42ddae10 | 3678 | sal.pc = func_addr; |
141c5cc4 JK |
3679 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3680 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3681 | return sal; |
3682 | } | |
3683 | ||
aab2f208 | 3684 | /* We always should have a line for the function start address. |
42ddae10 | 3685 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3686 | just the PC and hope that skip_prologue_sal (if requested) |
3687 | can find a line number for after the prologue. */ | |
42ddae10 | 3688 | if (sal.pc < func_addr) |
aab2f208 | 3689 | { |
51abb421 | 3690 | sal = {}; |
aab2f208 | 3691 | sal.pspace = current_program_space; |
42ddae10 | 3692 | sal.pc = func_addr; |
08be3fe3 | 3693 | sal.section = section; |
aab2f208 DE |
3694 | } |
3695 | ||
3696 | if (funfirstline) | |
3697 | skip_prologue_sal (&sal); | |
3698 | ||
3699 | return sal; | |
3700 | } | |
3701 | ||
42ddae10 PA |
3702 | /* See symtab.h. */ |
3703 | ||
cd2bb709 PA |
3704 | symtab_and_line |
3705 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3706 | bool funfirstline) | |
3707 | { | |
3708 | symtab_and_line sal | |
3709 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3710 | ||
3711 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3712 | the symtab and linenumber, but not a symbol. Fill in the | |
3713 | function symbol too. */ | |
3714 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3715 | ||
3716 | return sal; | |
3717 | } | |
3718 | ||
3719 | /* See symtab.h. */ | |
3720 | ||
42ddae10 PA |
3721 | symtab_and_line |
3722 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3723 | { | |
3724 | fixup_symbol_section (sym, NULL); | |
3725 | symtab_and_line sal | |
2b1ffcfd | 3726 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3727 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3728 | funfirstline); | |
42ddae10 PA |
3729 | sal.symbol = sym; |
3730 | return sal; | |
3731 | } | |
3732 | ||
3733 | ||
8c7a1ee8 EZ |
3734 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3735 | address for that function that has an entry in SYMTAB's line info | |
3736 | table. If such an entry cannot be found, return FUNC_ADDR | |
3737 | unaltered. */ | |
eca864fe | 3738 | |
70221824 | 3739 | static CORE_ADDR |
8c7a1ee8 EZ |
3740 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3741 | { | |
3742 | CORE_ADDR func_start, func_end; | |
3743 | struct linetable *l; | |
952a6d41 | 3744 | int i; |
8c7a1ee8 EZ |
3745 | |
3746 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3747 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3748 | if (l == NULL) |
3749 | return func_addr; | |
3750 | ||
3751 | /* Get the range for the function's PC values, or give up if we | |
3752 | cannot, for some reason. */ | |
3753 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3754 | return func_addr; | |
3755 | ||
3756 | /* Linetable entries are ordered by PC values, see the commentary in | |
3757 | symtab.h where `struct linetable' is defined. Thus, the first | |
3758 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3759 | address we are looking for. */ | |
3760 | for (i = 0; i < l->nitems; i++) | |
3761 | { | |
3762 | struct linetable_entry *item = &(l->item[i]); | |
3763 | ||
3764 | /* Don't use line numbers of zero, they mark special entries in | |
3765 | the table. See the commentary on symtab.h before the | |
3766 | definition of struct linetable. */ | |
3767 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3768 | return item->pc; | |
3769 | } | |
3770 | ||
3771 | return func_addr; | |
3772 | } | |
3773 | ||
059acae7 UW |
3774 | /* Adjust SAL to the first instruction past the function prologue. |
3775 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3776 | If the line number was explicitly specified then the SAL can still be |
3777 | updated, unless the language for SAL is assembler, in which case the SAL | |
3778 | will be left unchanged. | |
3779 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3780 | |
059acae7 UW |
3781 | void |
3782 | skip_prologue_sal (struct symtab_and_line *sal) | |
3783 | { | |
3784 | struct symbol *sym; | |
3785 | struct symtab_and_line start_sal; | |
8be455d7 | 3786 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3787 | struct obj_section *section; |
3788 | const char *name; | |
3789 | struct objfile *objfile; | |
3790 | struct gdbarch *gdbarch; | |
3977b71f | 3791 | const struct block *b, *function_block; |
8be455d7 | 3792 | int force_skip, skip; |
c906108c | 3793 | |
a4b411d6 | 3794 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3795 | if (sal->explicit_pc) |
3796 | return; | |
6c95b8df | 3797 | |
5b0e2db4 AB |
3798 | /* In assembly code, if the user asks for a specific line then we should |
3799 | not adjust the SAL. The user already has instruction level | |
3800 | visibility in this case, so selecting a line other than one requested | |
3801 | is likely to be the wrong choice. */ | |
3802 | if (sal->symtab != nullptr | |
3803 | && sal->explicit_line | |
3804 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3805 | return; | |
3806 | ||
5ed8105e PA |
3807 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3808 | ||
059acae7 | 3809 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3810 | |
059acae7 UW |
3811 | sym = find_pc_sect_function (sal->pc, sal->section); |
3812 | if (sym != NULL) | |
bccdca4a | 3813 | { |
059acae7 UW |
3814 | fixup_symbol_section (sym, NULL); |
3815 | ||
08be3fe3 | 3816 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3817 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3818 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
987012b8 | 3819 | name = sym->linkage_name (); |
c906108c | 3820 | } |
059acae7 UW |
3821 | else |
3822 | { | |
7c7b6655 TT |
3823 | struct bound_minimal_symbol msymbol |
3824 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3825 | |
7c7b6655 | 3826 | if (msymbol.minsym == NULL) |
5ed8105e | 3827 | return; |
059acae7 | 3828 | |
7c7b6655 | 3829 | objfile = msymbol.objfile; |
77e371c0 | 3830 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 | 3831 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c9d95fa3 | 3832 | name = msymbol.minsym->linkage_name (); |
059acae7 UW |
3833 | } |
3834 | ||
08feed99 | 3835 | gdbarch = objfile->arch (); |
059acae7 | 3836 | |
8be455d7 JK |
3837 | /* Process the prologue in two passes. In the first pass try to skip the |
3838 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3839 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3840 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3841 | |
8be455d7 JK |
3842 | skip = 1; |
3843 | force_skip = 1; | |
059acae7 | 3844 | |
8be455d7 JK |
3845 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3846 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3847 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3848 | if (sym != NULL |
3849 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3850 | force_skip = 0; |
059acae7 | 3851 | |
8be455d7 JK |
3852 | saved_pc = pc; |
3853 | do | |
c906108c | 3854 | { |
8be455d7 | 3855 | pc = saved_pc; |
4309257c | 3856 | |
8be455d7 JK |
3857 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3858 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3859 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3860 | pc = overlay_unmapped_address (pc, section); | |
3861 | ||
3862 | /* Skip "first line" of function (which is actually its prologue). */ | |
3863 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3864 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3865 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3866 | if (skip) |
46a62268 | 3867 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3868 | |
3869 | /* For overlays, map pc back into its mapped VMA range. */ | |
3870 | pc = overlay_mapped_address (pc, section); | |
3871 | ||
3872 | /* Calculate line number. */ | |
059acae7 | 3873 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3874 | |
3875 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3876 | line is still part of the same function. */ | |
3877 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3878 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3879 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3880 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3881 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3882 | { |
3883 | /* First pc of next line */ | |
3884 | pc = start_sal.end; | |
3885 | /* Recalculate the line number (might not be N+1). */ | |
3886 | start_sal = find_pc_sect_line (pc, section, 0); | |
3887 | } | |
3888 | ||
3889 | /* On targets with executable formats that don't have a concept of | |
3890 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3891 | to `__main' in `main' between the prologue and before user | |
3892 | code. */ | |
3893 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3894 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3895 | { |
3896 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3897 | /* Recalculate the line number (might not be N+1). */ | |
3898 | start_sal = find_pc_sect_line (pc, section, 0); | |
3899 | force_skip = 1; | |
3900 | } | |
4309257c | 3901 | } |
8be455d7 | 3902 | while (!force_skip && skip--); |
4309257c | 3903 | |
8c7a1ee8 EZ |
3904 | /* If we still don't have a valid source line, try to find the first |
3905 | PC in the lineinfo table that belongs to the same function. This | |
3906 | happens with COFF debug info, which does not seem to have an | |
3907 | entry in lineinfo table for the code after the prologue which has | |
3908 | no direct relation to source. For example, this was found to be | |
3909 | the case with the DJGPP target using "gcc -gcoff" when the | |
3910 | compiler inserted code after the prologue to make sure the stack | |
3911 | is aligned. */ | |
8be455d7 | 3912 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3913 | { |
08be3fe3 | 3914 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3915 | /* Recalculate the line number. */ |
059acae7 | 3916 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3917 | } |
3918 | ||
059acae7 UW |
3919 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3920 | forward SAL to the end of the prologue. */ | |
3921 | if (sal->pc >= pc) | |
3922 | return; | |
3923 | ||
3924 | sal->pc = pc; | |
3925 | sal->section = section; | |
059acae7 UW |
3926 | sal->symtab = start_sal.symtab; |
3927 | sal->line = start_sal.line; | |
3928 | sal->end = start_sal.end; | |
c906108c | 3929 | |
edb3359d DJ |
3930 | /* Check if we are now inside an inlined function. If we can, |
3931 | use the call site of the function instead. */ | |
059acae7 | 3932 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3933 | function_block = NULL; |
3934 | while (b != NULL) | |
3935 | { | |
3936 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3937 | function_block = b; | |
3938 | else if (BLOCK_FUNCTION (b) != NULL) | |
3939 | break; | |
3940 | b = BLOCK_SUPERBLOCK (b); | |
3941 | } | |
3942 | if (function_block != NULL | |
3943 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3944 | { | |
059acae7 | 3945 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3946 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3947 | } |
c906108c | 3948 | } |
50641945 | 3949 | |
f1f58506 DE |
3950 | /* Given PC at the function's start address, attempt to find the |
3951 | prologue end using SAL information. Return zero if the skip fails. | |
3952 | ||
3953 | A non-optimized prologue traditionally has one SAL for the function | |
3954 | and a second for the function body. A single line function has | |
3955 | them both pointing at the same line. | |
3956 | ||
3957 | An optimized prologue is similar but the prologue may contain | |
3958 | instructions (SALs) from the instruction body. Need to skip those | |
3959 | while not getting into the function body. | |
3960 | ||
3961 | The functions end point and an increasing SAL line are used as | |
3962 | indicators of the prologue's endpoint. | |
3963 | ||
3964 | This code is based on the function refine_prologue_limit | |
3965 | (found in ia64). */ | |
3966 | ||
3967 | CORE_ADDR | |
3968 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3969 | { | |
3970 | struct symtab_and_line prologue_sal; | |
3971 | CORE_ADDR start_pc; | |
3972 | CORE_ADDR end_pc; | |
3973 | const struct block *bl; | |
3974 | ||
3975 | /* Get an initial range for the function. */ | |
3976 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3977 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3978 | ||
3979 | prologue_sal = find_pc_line (start_pc, 0); | |
3980 | if (prologue_sal.line != 0) | |
3981 | { | |
3982 | /* For languages other than assembly, treat two consecutive line | |
3983 | entries at the same address as a zero-instruction prologue. | |
3984 | The GNU assembler emits separate line notes for each instruction | |
3985 | in a multi-instruction macro, but compilers generally will not | |
3986 | do this. */ | |
3987 | if (prologue_sal.symtab->language != language_asm) | |
3988 | { | |
8435453b | 3989 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3990 | int idx = 0; |
3991 | ||
3992 | /* Skip any earlier lines, and any end-of-sequence marker | |
3993 | from a previous function. */ | |
3994 | while (linetable->item[idx].pc != prologue_sal.pc | |
3995 | || linetable->item[idx].line == 0) | |
3996 | idx++; | |
3997 | ||
3998 | if (idx+1 < linetable->nitems | |
3999 | && linetable->item[idx+1].line != 0 | |
4000 | && linetable->item[idx+1].pc == start_pc) | |
4001 | return start_pc; | |
4002 | } | |
4003 | ||
4004 | /* If there is only one sal that covers the entire function, | |
4005 | then it is probably a single line function, like | |
4006 | "foo(){}". */ | |
4007 | if (prologue_sal.end >= end_pc) | |
4008 | return 0; | |
4009 | ||
4010 | while (prologue_sal.end < end_pc) | |
4011 | { | |
4012 | struct symtab_and_line sal; | |
4013 | ||
4014 | sal = find_pc_line (prologue_sal.end, 0); | |
4015 | if (sal.line == 0) | |
4016 | break; | |
4017 | /* Assume that a consecutive SAL for the same (or larger) | |
4018 | line mark the prologue -> body transition. */ | |
4019 | if (sal.line >= prologue_sal.line) | |
4020 | break; | |
4021 | /* Likewise if we are in a different symtab altogether | |
4022 | (e.g. within a file included via #include). */ | |
4023 | if (sal.symtab != prologue_sal.symtab) | |
4024 | break; | |
4025 | ||
4026 | /* The line number is smaller. Check that it's from the | |
4027 | same function, not something inlined. If it's inlined, | |
4028 | then there is no point comparing the line numbers. */ | |
4029 | bl = block_for_pc (prologue_sal.end); | |
4030 | while (bl) | |
4031 | { | |
4032 | if (block_inlined_p (bl)) | |
4033 | break; | |
4034 | if (BLOCK_FUNCTION (bl)) | |
4035 | { | |
4036 | bl = NULL; | |
4037 | break; | |
4038 | } | |
4039 | bl = BLOCK_SUPERBLOCK (bl); | |
4040 | } | |
4041 | if (bl != NULL) | |
4042 | break; | |
4043 | ||
4044 | /* The case in which compiler's optimizer/scheduler has | |
4045 | moved instructions into the prologue. We look ahead in | |
4046 | the function looking for address ranges whose | |
4047 | corresponding line number is less the first one that we | |
4048 | found for the function. This is more conservative then | |
4049 | refine_prologue_limit which scans a large number of SALs | |
4050 | looking for any in the prologue. */ | |
4051 | prologue_sal = sal; | |
4052 | } | |
4053 | } | |
4054 | ||
4055 | if (prologue_sal.end < end_pc) | |
4056 | /* Return the end of this line, or zero if we could not find a | |
4057 | line. */ | |
4058 | return prologue_sal.end; | |
4059 | else | |
4060 | /* Don't return END_PC, which is past the end of the function. */ | |
4061 | return prologue_sal.pc; | |
4062 | } | |
bf223d3e PA |
4063 | |
4064 | /* See symtab.h. */ | |
4065 | ||
4066 | symbol * | |
4067 | find_function_alias_target (bound_minimal_symbol msymbol) | |
4068 | { | |
4024cf2b PA |
4069 | CORE_ADDR func_addr; |
4070 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
4071 | return NULL; |
4072 | ||
4024cf2b | 4073 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
4074 | if (sym != NULL |
4075 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 4076 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
4077 | return sym; |
4078 | ||
4079 | return NULL; | |
4080 | } | |
4081 | ||
f1f58506 | 4082 | \f |
c906108c SS |
4083 | /* If P is of the form "operator[ \t]+..." where `...' is |
4084 | some legitimate operator text, return a pointer to the | |
4085 | beginning of the substring of the operator text. | |
4086 | Otherwise, return "". */ | |
eca864fe | 4087 | |
96142726 TT |
4088 | static const char * |
4089 | operator_chars (const char *p, const char **end) | |
c906108c SS |
4090 | { |
4091 | *end = ""; | |
8090b426 | 4092 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 4093 | return *end; |
8090b426 | 4094 | p += CP_OPERATOR_LEN; |
c906108c SS |
4095 | |
4096 | /* Don't get faked out by `operator' being part of a longer | |
4097 | identifier. */ | |
c5aa993b | 4098 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4099 | return *end; |
4100 | ||
4101 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4102 | while (*p == ' ' || *p == '\t') | |
4103 | p++; | |
4104 | ||
c378eb4e | 4105 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4106 | |
c5aa993b | 4107 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4108 | { |
96142726 | 4109 | const char *q = p + 1; |
433759f7 | 4110 | |
c5aa993b | 4111 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4112 | q++; |
4113 | *end = q; | |
4114 | return p; | |
4115 | } | |
4116 | ||
53e8ad3d MS |
4117 | while (*p) |
4118 | switch (*p) | |
4119 | { | |
4120 | case '\\': /* regexp quoting */ | |
4121 | if (p[1] == '*') | |
4122 | { | |
3e43a32a | 4123 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4124 | *end = p + 3; |
4125 | else /* 'operator\*' */ | |
4126 | *end = p + 2; | |
4127 | return p; | |
4128 | } | |
4129 | else if (p[1] == '[') | |
4130 | { | |
4131 | if (p[2] == ']') | |
3e43a32a MS |
4132 | error (_("mismatched quoting on brackets, " |
4133 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4134 | else if (p[2] == '\\' && p[3] == ']') |
4135 | { | |
4136 | *end = p + 4; /* 'operator\[\]' */ | |
4137 | return p; | |
4138 | } | |
4139 | else | |
8a3fe4f8 | 4140 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4141 | } |
9af17804 | 4142 | else |
53e8ad3d | 4143 | { |
85102364 | 4144 | /* Gratuitous quote: skip it and move on. */ |
53e8ad3d MS |
4145 | p++; |
4146 | continue; | |
4147 | } | |
4148 | break; | |
4149 | case '!': | |
4150 | case '=': | |
4151 | case '*': | |
4152 | case '/': | |
4153 | case '%': | |
4154 | case '^': | |
4155 | if (p[1] == '=') | |
4156 | *end = p + 2; | |
4157 | else | |
4158 | *end = p + 1; | |
4159 | return p; | |
4160 | case '<': | |
4161 | case '>': | |
4162 | case '+': | |
4163 | case '-': | |
4164 | case '&': | |
4165 | case '|': | |
4166 | if (p[0] == '-' && p[1] == '>') | |
4167 | { | |
c378eb4e | 4168 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4169 | if (p[2] == '*') |
4170 | { | |
4171 | *end = p + 3; /* 'operator->*' */ | |
4172 | return p; | |
4173 | } | |
4174 | else if (p[2] == '\\') | |
4175 | { | |
4176 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4177 | return p; | |
4178 | } | |
4179 | else | |
4180 | { | |
4181 | *end = p + 2; /* 'operator->' */ | |
4182 | return p; | |
4183 | } | |
4184 | } | |
4185 | if (p[1] == '=' || p[1] == p[0]) | |
4186 | *end = p + 2; | |
4187 | else | |
4188 | *end = p + 1; | |
4189 | return p; | |
4190 | case '~': | |
4191 | case ',': | |
c5aa993b | 4192 | *end = p + 1; |
53e8ad3d MS |
4193 | return p; |
4194 | case '(': | |
4195 | if (p[1] != ')') | |
3e43a32a MS |
4196 | error (_("`operator ()' must be specified " |
4197 | "without whitespace in `()'")); | |
c5aa993b | 4198 | *end = p + 2; |
53e8ad3d MS |
4199 | return p; |
4200 | case '?': | |
4201 | if (p[1] != ':') | |
3e43a32a MS |
4202 | error (_("`operator ?:' must be specified " |
4203 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4204 | *end = p + 2; |
4205 | return p; | |
4206 | case '[': | |
4207 | if (p[1] != ']') | |
3e43a32a MS |
4208 | error (_("`operator []' must be specified " |
4209 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4210 | *end = p + 2; |
4211 | return p; | |
4212 | default: | |
8a3fe4f8 | 4213 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4214 | break; |
4215 | } | |
4216 | ||
c906108c SS |
4217 | *end = ""; |
4218 | return *end; | |
4219 | } | |
c906108c | 4220 | \f |
c5aa993b | 4221 | |
28cd9371 PW |
4222 | /* What part to match in a file name. */ |
4223 | ||
4224 | struct filename_partial_match_opts | |
4225 | { | |
4226 | /* Only match the directory name part. */ | |
491144b5 | 4227 | bool dirname = false; |
28cd9371 PW |
4228 | |
4229 | /* Only match the basename part. */ | |
491144b5 | 4230 | bool basename = false; |
28cd9371 PW |
4231 | }; |
4232 | ||
9fdc877b DE |
4233 | /* Data structure to maintain printing state for output_source_filename. */ |
4234 | ||
4235 | struct output_source_filename_data | |
4236 | { | |
28cd9371 PW |
4237 | /* Output only filenames matching REGEXP. */ |
4238 | std::string regexp; | |
4239 | gdb::optional<compiled_regex> c_regexp; | |
4240 | /* Possibly only match a part of the filename. */ | |
4241 | filename_partial_match_opts partial_match; | |
4242 | ||
4243 | ||
9fdc877b DE |
4244 | /* Cache of what we've seen so far. */ |
4245 | struct filename_seen_cache *filename_seen_cache; | |
4246 | ||
4247 | /* Flag of whether we're printing the first one. */ | |
4248 | int first; | |
4249 | }; | |
4250 | ||
c94fdfd0 | 4251 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4252 | NAME is the name to print. |
4253 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4254 | |
c94fdfd0 | 4255 | static void |
9fdc877b DE |
4256 | output_source_filename (const char *name, |
4257 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4258 | { |
4259 | /* Since a single source file can result in several partial symbol | |
4260 | tables, we need to avoid printing it more than once. Note: if | |
4261 | some of the psymtabs are read in and some are not, it gets | |
4262 | printed both under "Source files for which symbols have been | |
4263 | read" and "Source files for which symbols will be read in on | |
4264 | demand". I consider this a reasonable way to deal with the | |
4265 | situation. I'm not sure whether this can also happen for | |
4266 | symtabs; it doesn't hurt to check. */ | |
4267 | ||
4268 | /* Was NAME already seen? */ | |
bbf2f4df | 4269 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4270 | { |
4271 | /* Yes; don't print it again. */ | |
4272 | return; | |
4273 | } | |
9fdc877b | 4274 | |
28cd9371 PW |
4275 | /* Does it match data->regexp? */ |
4276 | if (data->c_regexp.has_value ()) | |
4277 | { | |
4278 | const char *to_match; | |
4279 | std::string dirname; | |
4280 | ||
4281 | if (data->partial_match.dirname) | |
4282 | { | |
4283 | dirname = ldirname (name); | |
4284 | to_match = dirname.c_str (); | |
4285 | } | |
4286 | else if (data->partial_match.basename) | |
4287 | to_match = lbasename (name); | |
4288 | else | |
4289 | to_match = name; | |
4290 | ||
4291 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4292 | return; | |
4293 | } | |
4294 | ||
4295 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4296 | if (! data->first) |
4297 | printf_filtered (", "); | |
4298 | data->first = 0; | |
c906108c SS |
4299 | |
4300 | wrap_here (""); | |
1ed9f74e | 4301 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4302 | } |
c906108c | 4303 | |
ccefe4c4 | 4304 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4305 | |
ccefe4c4 | 4306 | static void |
533a737e | 4307 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4308 | void *data) |
4309 | { | |
19ba03f4 SM |
4310 | output_source_filename (fullname ? fullname : filename, |
4311 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4312 | } |
4313 | ||
28cd9371 PW |
4314 | using isrc_flag_option_def |
4315 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4316 | ||
4317 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4318 | ||
4319 | isrc_flag_option_def { | |
4320 | "dirname", | |
4321 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4322 | N_("Show only the files having a dirname matching REGEXP."), | |
4323 | }, | |
4324 | ||
4325 | isrc_flag_option_def { | |
4326 | "basename", | |
4327 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4328 | N_("Show only the files having a basename matching REGEXP."), | |
4329 | }, | |
4330 | ||
4331 | }; | |
4332 | ||
4333 | /* Create an option_def_group for the "info sources" options, with | |
4334 | ISRC_OPTS as context. */ | |
4335 | ||
4336 | static inline gdb::option::option_def_group | |
4337 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4338 | { | |
4339 | return {{info_sources_option_defs}, isrc_opts}; | |
4340 | } | |
4341 | ||
4342 | /* Prints the header message for the source files that will be printed | |
4343 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4344 | that tells what will or has been done with the symbols of the | |
4345 | matching source files. */ | |
4346 | ||
c906108c | 4347 | static void |
28cd9371 PW |
4348 | print_info_sources_header (const char *symbol_msg, |
4349 | const struct output_source_filename_data *data) | |
4350 | { | |
4351 | puts_filtered (symbol_msg); | |
4352 | if (!data->regexp.empty ()) | |
4353 | { | |
4354 | if (data->partial_match.dirname) | |
4355 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4356 | data->regexp.c_str ()); | |
4357 | else if (data->partial_match.basename) | |
4358 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4359 | data->regexp.c_str ()); | |
4360 | else | |
4361 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4362 | data->regexp.c_str ()); | |
4363 | } | |
4364 | puts_filtered ("\n"); | |
4365 | } | |
4366 | ||
4367 | /* Completer for "info sources". */ | |
4368 | ||
4369 | static void | |
4370 | info_sources_command_completer (cmd_list_element *ignore, | |
4371 | completion_tracker &tracker, | |
4372 | const char *text, const char *word) | |
4373 | { | |
4374 | const auto group = make_info_sources_options_def_group (nullptr); | |
4375 | if (gdb::option::complete_options | |
4376 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4377 | return; | |
4378 | } | |
4379 | ||
4380 | static void | |
4381 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4382 | { |
9fdc877b | 4383 | struct output_source_filename_data data; |
c5aa993b | 4384 | |
c906108c SS |
4385 | if (!have_full_symbols () && !have_partial_symbols ()) |
4386 | { | |
8a3fe4f8 | 4387 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4388 | } |
c5aa993b | 4389 | |
bbf2f4df PA |
4390 | filename_seen_cache filenames_seen; |
4391 | ||
28cd9371 PW |
4392 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4393 | ||
4394 | gdb::option::process_options | |
4395 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4396 | |
28cd9371 PW |
4397 | if (args != NULL && *args != '\000') |
4398 | data.regexp = args; | |
c906108c | 4399 | |
28cd9371 | 4400 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4401 | data.first = 1; |
28cd9371 PW |
4402 | |
4403 | if (data.partial_match.dirname && data.partial_match.basename) | |
4404 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4405 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4406 | && data.regexp.empty ()) | |
4407 | error (_("Missing REGEXP for 'info sources'.")); | |
4408 | ||
4409 | if (data.regexp.empty ()) | |
4410 | data.c_regexp.reset (); | |
4411 | else | |
4412 | { | |
4413 | int cflags = REG_NOSUB; | |
4414 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4415 | cflags |= REG_ICASE; | |
4416 | #endif | |
4417 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4418 | _("Invalid regexp")); | |
4419 | } | |
4420 | ||
4421 | print_info_sources_header | |
4422 | (_("Source files for which symbols have been read in:\n"), &data); | |
4423 | ||
2030c079 | 4424 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4425 | { |
b669c953 | 4426 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4427 | { |
4428 | for (symtab *s : compunit_filetabs (cu)) | |
4429 | { | |
4430 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4431 | |
8b31193a TT |
4432 | output_source_filename (fullname, &data); |
4433 | } | |
4434 | } | |
4435 | } | |
c906108c | 4436 | printf_filtered ("\n\n"); |
c5aa993b | 4437 | |
28cd9371 PW |
4438 | print_info_sources_header |
4439 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4440 | |
bbf2f4df | 4441 | filenames_seen.clear (); |
9fdc877b | 4442 | data.first = 1; |
bb4142cf DE |
4443 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4444 | 1 /*need_fullname*/); | |
c906108c SS |
4445 | printf_filtered ("\n"); |
4446 | } | |
4447 | ||
470c0b1c AB |
4448 | /* Compare FILE against all the entries of FILENAMES. If BASENAMES is |
4449 | true compare only lbasename of FILENAMES. */ | |
fbd9ab74 | 4450 | |
470c0b1c AB |
4451 | static bool |
4452 | file_matches (const char *file, const std::vector<const char *> &filenames, | |
4453 | bool basenames) | |
c906108c | 4454 | { |
470c0b1c AB |
4455 | if (filenames.empty ()) |
4456 | return true; | |
c906108c | 4457 | |
470c0b1c | 4458 | for (const char *name : filenames) |
c906108c | 4459 | { |
470c0b1c AB |
4460 | name = (basenames ? lbasename (name) : name); |
4461 | if (compare_filenames_for_search (file, name)) | |
4462 | return true; | |
c906108c | 4463 | } |
470c0b1c AB |
4464 | |
4465 | return false; | |
c906108c SS |
4466 | } |
4467 | ||
f97a63c5 AB |
4468 | /* Helper function for std::sort on symbol_search objects. Can only sort |
4469 | symbols, not minimal symbols. */ | |
eca864fe | 4470 | |
b9c04fb2 TT |
4471 | int |
4472 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4473 | const symbol_search &sym_b) | |
434d2d4f | 4474 | { |
b52109bc DE |
4475 | int c; |
4476 | ||
b9c04fb2 TT |
4477 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4478 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4479 | if (c != 0) |
4480 | return c; | |
434d2d4f | 4481 | |
b9c04fb2 TT |
4482 | if (sym_a.block != sym_b.block) |
4483 | return sym_a.block - sym_b.block; | |
b52109bc | 4484 | |
987012b8 | 4485 | return strcmp (sym_a.symbol->print_name (), sym_b.symbol->print_name ()); |
434d2d4f DJ |
4486 | } |
4487 | ||
12615cba PW |
4488 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4489 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4490 | ||
4491 | bool | |
4492 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4493 | const struct symbol *sym) | |
4494 | { | |
4495 | struct type *sym_type; | |
4496 | std::string printed_sym_type_name; | |
4497 | ||
4498 | if (symbol_lookup_debug > 1) | |
4499 | { | |
4500 | fprintf_unfiltered (gdb_stdlog, | |
4501 | "treg_matches_sym_type_name\n sym %s\n", | |
987012b8 | 4502 | sym->natural_name ()); |
12615cba PW |
4503 | } |
4504 | ||
4505 | sym_type = SYMBOL_TYPE (sym); | |
4506 | if (sym_type == NULL) | |
4507 | return false; | |
4508 | ||
43d397ca PW |
4509 | { |
4510 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4511 | |
12615cba | 4512 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4513 | } |
4514 | ||
12615cba PW |
4515 | |
4516 | if (symbol_lookup_debug > 1) | |
4517 | { | |
4518 | fprintf_unfiltered (gdb_stdlog, | |
4519 | " sym_type_name %s\n", | |
4520 | printed_sym_type_name.c_str ()); | |
4521 | } | |
4522 | ||
4523 | ||
4524 | if (printed_sym_type_name.empty ()) | |
4525 | return false; | |
4526 | ||
4527 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4528 | } | |
4529 | ||
f97a63c5 AB |
4530 | /* See symtab.h. */ |
4531 | ||
4532 | bool | |
4533 | global_symbol_searcher::is_suitable_msymbol | |
4534 | (const enum search_domain kind, const minimal_symbol *msymbol) | |
4535 | { | |
4536 | switch (MSYMBOL_TYPE (msymbol)) | |
4537 | { | |
4538 | case mst_data: | |
4539 | case mst_bss: | |
4540 | case mst_file_data: | |
4541 | case mst_file_bss: | |
4542 | return kind == VARIABLES_DOMAIN; | |
4543 | case mst_text: | |
4544 | case mst_file_text: | |
4545 | case mst_solib_trampoline: | |
4546 | case mst_text_gnu_ifunc: | |
4547 | return kind == FUNCTIONS_DOMAIN; | |
4548 | default: | |
4549 | return false; | |
4550 | } | |
4551 | } | |
4552 | ||
4553 | /* See symtab.h. */ | |
4554 | ||
4555 | bool | |
4556 | global_symbol_searcher::expand_symtabs | |
4557 | (objfile *objfile, const gdb::optional<compiled_regex> &preg) const | |
4558 | { | |
4559 | enum search_domain kind = m_kind; | |
4560 | bool found_msymbol = false; | |
4561 | ||
4562 | if (objfile->sf) | |
4563 | objfile->sf->qf->expand_symtabs_matching | |
4564 | (objfile, | |
4565 | [&] (const char *filename, bool basenames) | |
4566 | { | |
4567 | return file_matches (filename, filenames, basenames); | |
4568 | }, | |
c1a66c06 | 4569 | &lookup_name_info::match_any (), |
f97a63c5 AB |
4570 | [&] (const char *symname) |
4571 | { | |
4572 | return (!preg.has_value () | |
4573 | || preg->exec (symname, 0, NULL, 0) == 0); | |
4574 | }, | |
4575 | NULL, | |
4576 | kind); | |
4577 | ||
4578 | /* Here, we search through the minimal symbol tables for functions and | |
4579 | variables that match, and force their symbols to be read. This is in | |
4580 | particular necessary for demangled variable names, which are no longer | |
4581 | put into the partial symbol tables. The symbol will then be found | |
4582 | during the scan of symtabs later. | |
4583 | ||
4584 | For functions, find_pc_symtab should succeed if we have debug info for | |
4585 | the function, for variables we have to call | |
4586 | lookup_symbol_in_objfile_from_linkage_name to determine if the | |
4587 | variable has debug info. If the lookup fails, set found_msymbol so | |
4588 | that we will rescan to print any matching symbols without debug info. | |
4589 | We only search the objfile the msymbol came from, we no longer search | |
4590 | all objfiles. In large programs (1000s of shared libs) searching all | |
4591 | objfiles is not worth the pain. */ | |
4592 | if (filenames.empty () | |
4593 | && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) | |
4594 | { | |
4595 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
4596 | { | |
4597 | QUIT; | |
4598 | ||
4599 | if (msymbol->created_by_gdb) | |
4600 | continue; | |
4601 | ||
4602 | if (is_suitable_msymbol (kind, msymbol)) | |
4603 | { | |
4604 | if (!preg.has_value () | |
4605 | || preg->exec (msymbol->natural_name (), 0, | |
4606 | NULL, 0) == 0) | |
4607 | { | |
4608 | /* An important side-effect of these lookup functions is | |
4609 | to expand the symbol table if msymbol is found, later | |
4610 | in the process we will add matching symbols or | |
4611 | msymbols to the results list, and that requires that | |
4612 | the symbols tables are expanded. */ | |
4613 | if (kind == FUNCTIONS_DOMAIN | |
4614 | ? (find_pc_compunit_symtab | |
4615 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4616 | == NULL) | |
4617 | : (lookup_symbol_in_objfile_from_linkage_name | |
4618 | (objfile, msymbol->linkage_name (), | |
4619 | VAR_DOMAIN) | |
4620 | .symbol == NULL)) | |
4621 | found_msymbol = true; | |
4622 | } | |
4623 | } | |
4624 | } | |
4625 | } | |
4626 | ||
4627 | return found_msymbol; | |
4628 | } | |
4629 | ||
4630 | /* See symtab.h. */ | |
4631 | ||
c2512106 | 4632 | bool |
f97a63c5 AB |
4633 | global_symbol_searcher::add_matching_symbols |
4634 | (objfile *objfile, | |
4635 | const gdb::optional<compiled_regex> &preg, | |
4636 | const gdb::optional<compiled_regex> &treg, | |
c2512106 | 4637 | std::set<symbol_search> *result_set) const |
f97a63c5 AB |
4638 | { |
4639 | enum search_domain kind = m_kind; | |
4640 | ||
4641 | /* Add matching symbols (if not already present). */ | |
4642 | for (compunit_symtab *cust : objfile->compunits ()) | |
4643 | { | |
4644 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (cust); | |
4645 | ||
4646 | for (block_enum block : { GLOBAL_BLOCK, STATIC_BLOCK }) | |
4647 | { | |
4648 | struct block_iterator iter; | |
4649 | struct symbol *sym; | |
4650 | const struct block *b = BLOCKVECTOR_BLOCK (bv, block); | |
4651 | ||
4652 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4653 | { | |
4654 | struct symtab *real_symtab = symbol_symtab (sym); | |
4655 | ||
4656 | QUIT; | |
4657 | ||
4658 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4659 | not need to be a substring of symtab_to_fullname as | |
4660 | it may contain "./" etc. */ | |
4661 | if ((file_matches (real_symtab->filename, filenames, false) | |
4662 | || ((basenames_may_differ | |
4663 | || file_matches (lbasename (real_symtab->filename), | |
4664 | filenames, true)) | |
4665 | && file_matches (symtab_to_fullname (real_symtab), | |
4666 | filenames, false))) | |
4667 | && ((!preg.has_value () | |
4668 | || preg->exec (sym->natural_name (), 0, | |
4669 | NULL, 0) == 0) | |
4670 | && ((kind == VARIABLES_DOMAIN | |
4671 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4672 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4673 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4674 | /* LOC_CONST can be used for more than | |
4675 | just enums, e.g., c++ static const | |
4676 | members. We only want to skip enums | |
4677 | here. */ | |
4678 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4679 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4680 | == TYPE_CODE_ENUM)) | |
4681 | && (!treg.has_value () | |
4682 | || treg_matches_sym_type_name (*treg, sym))) | |
4683 | || (kind == FUNCTIONS_DOMAIN | |
4684 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4685 | && (!treg.has_value () | |
4686 | || treg_matches_sym_type_name (*treg, | |
4687 | sym))) | |
4688 | || (kind == TYPES_DOMAIN | |
4689 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
4690 | && SYMBOL_DOMAIN (sym) != MODULE_DOMAIN) | |
4691 | || (kind == MODULES_DOMAIN | |
4692 | && SYMBOL_DOMAIN (sym) == MODULE_DOMAIN | |
4693 | && SYMBOL_LINE (sym) != 0)))) | |
4694 | { | |
c2512106 AB |
4695 | if (result_set->size () < m_max_search_results) |
4696 | { | |
4697 | /* Match, insert if not already in the results. */ | |
4698 | symbol_search ss (block, sym); | |
4699 | if (result_set->find (ss) == result_set->end ()) | |
4700 | result_set->insert (ss); | |
4701 | } | |
4702 | else | |
4703 | return false; | |
f97a63c5 AB |
4704 | } |
4705 | } | |
4706 | } | |
4707 | } | |
c2512106 AB |
4708 | |
4709 | return true; | |
f97a63c5 AB |
4710 | } |
4711 | ||
4712 | /* See symtab.h. */ | |
4713 | ||
c2512106 | 4714 | bool |
f97a63c5 AB |
4715 | global_symbol_searcher::add_matching_msymbols |
4716 | (objfile *objfile, const gdb::optional<compiled_regex> &preg, | |
4717 | std::vector<symbol_search> *results) const | |
4718 | { | |
4719 | enum search_domain kind = m_kind; | |
4720 | ||
4721 | for (minimal_symbol *msymbol : objfile->msymbols ()) | |
4722 | { | |
4723 | QUIT; | |
4724 | ||
4725 | if (msymbol->created_by_gdb) | |
4726 | continue; | |
4727 | ||
4728 | if (is_suitable_msymbol (kind, msymbol)) | |
4729 | { | |
4730 | if (!preg.has_value () | |
4731 | || preg->exec (msymbol->natural_name (), 0, | |
4732 | NULL, 0) == 0) | |
4733 | { | |
4734 | /* For functions we can do a quick check of whether the | |
4735 | symbol might be found via find_pc_symtab. */ | |
4736 | if (kind != FUNCTIONS_DOMAIN | |
4737 | || (find_pc_compunit_symtab | |
4738 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4739 | == NULL)) | |
4740 | { | |
4741 | if (lookup_symbol_in_objfile_from_linkage_name | |
4742 | (objfile, msymbol->linkage_name (), | |
4743 | VAR_DOMAIN).symbol == NULL) | |
4744 | { | |
4745 | /* Matching msymbol, add it to the results list. */ | |
c2512106 AB |
4746 | if (results->size () < m_max_search_results) |
4747 | results->emplace_back (GLOBAL_BLOCK, msymbol, objfile); | |
4748 | else | |
4749 | return false; | |
f97a63c5 AB |
4750 | } |
4751 | } | |
4752 | } | |
4753 | } | |
4754 | } | |
12615cba | 4755 | |
c2512106 | 4756 | return true; |
434d2d4f | 4757 | } |
5bd98722 | 4758 | |
470c0b1c | 4759 | /* See symtab.h. */ |
c378eb4e | 4760 | |
b9c04fb2 | 4761 | std::vector<symbol_search> |
470c0b1c | 4762 | global_symbol_searcher::search () const |
c906108c | 4763 | { |
2d7cc5c7 | 4764 | gdb::optional<compiled_regex> preg; |
12615cba | 4765 | gdb::optional<compiled_regex> treg; |
c906108c | 4766 | |
470c0b1c | 4767 | gdb_assert (m_kind != ALL_DOMAIN); |
e8930875 | 4768 | |
470c0b1c | 4769 | if (m_symbol_name_regexp != NULL) |
c906108c | 4770 | { |
470c0b1c AB |
4771 | const char *symbol_name_regexp = m_symbol_name_regexp; |
4772 | ||
c906108c SS |
4773 | /* Make sure spacing is right for C++ operators. |
4774 | This is just a courtesy to make the matching less sensitive | |
4775 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4776 | and <TYPENAME> or <OPERATOR>. */ |
96142726 | 4777 | const char *opend; |
470c0b1c | 4778 | const char *opname = operator_chars (symbol_name_regexp, &opend); |
433759f7 | 4779 | |
c906108c | 4780 | if (*opname) |
c5aa993b | 4781 | { |
3e43a32a MS |
4782 | int fix = -1; /* -1 means ok; otherwise number of |
4783 | spaces needed. */ | |
433759f7 | 4784 | |
c5aa993b JM |
4785 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4786 | { | |
c378eb4e | 4787 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4788 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4789 | fix = 1; | |
4790 | } | |
4791 | else | |
4792 | { | |
c378eb4e | 4793 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4794 | if (opname[-1] == ' ') |
4795 | fix = 0; | |
4796 | } | |
c378eb4e | 4797 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4798 | if (fix >= 0) |
4799 | { | |
045f55a6 | 4800 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4801 | |
c5aa993b | 4802 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
470c0b1c | 4803 | symbol_name_regexp = tmp; |
c5aa993b JM |
4804 | } |
4805 | } | |
4806 | ||
2d7cc5c7 PA |
4807 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4808 | ? REG_ICASE : 0); | |
470c0b1c AB |
4809 | preg.emplace (symbol_name_regexp, cflags, |
4810 | _("Invalid regexp")); | |
c906108c SS |
4811 | } |
4812 | ||
470c0b1c | 4813 | if (m_symbol_type_regexp != NULL) |
12615cba PW |
4814 | { |
4815 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4816 | ? REG_ICASE : 0); | |
470c0b1c AB |
4817 | treg.emplace (m_symbol_type_regexp, cflags, |
4818 | _("Invalid regexp")); | |
12615cba PW |
4819 | } |
4820 | ||
f97a63c5 | 4821 | bool found_msymbol = false; |
c2512106 | 4822 | std::set<symbol_search> result_set; |
2030c079 | 4823 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4824 | { |
f97a63c5 AB |
4825 | /* Expand symtabs within objfile that possibly contain matching |
4826 | symbols. */ | |
4827 | found_msymbol |= expand_symtabs (objfile, preg); | |
4828 | ||
c2512106 AB |
4829 | /* Find matching symbols within OBJFILE and add them in to the |
4830 | RESULT_SET set. Use a set here so that we can easily detect | |
4831 | duplicates as we go, and can therefore track how many unique | |
4832 | matches we have found so far. */ | |
4833 | if (!add_matching_symbols (objfile, preg, treg, &result_set)) | |
4834 | break; | |
d8aeb77f | 4835 | } |
c906108c | 4836 | |
c2512106 AB |
4837 | /* Convert the result set into a sorted result list, as std::set is |
4838 | defined to be sorted then no explicit call to std::sort is needed. */ | |
4839 | std::vector<symbol_search> result (result_set.begin (), result_set.end ()); | |
b52109bc | 4840 | |
470c0b1c | 4841 | /* If there are no debug symbols, then add matching minsyms. But if the |
f97a63c5 AB |
4842 | user wants to see symbols matching a type regexp, then never give a |
4843 | minimal symbol, as we assume that a minimal symbol does not have a | |
4844 | type. */ | |
4845 | if ((found_msymbol || (filenames.empty () && m_kind == VARIABLES_DOMAIN)) | |
470c0b1c | 4846 | && !m_exclude_minsyms |
a8462bbf | 4847 | && !treg.has_value ()) |
c906108c | 4848 | { |
f97a63c5 | 4849 | gdb_assert (m_kind == VARIABLES_DOMAIN || m_kind == FUNCTIONS_DOMAIN); |
2030c079 | 4850 | for (objfile *objfile : current_program_space->objfiles ()) |
c2512106 AB |
4851 | if (!add_matching_msymbols (objfile, preg, &result)) |
4852 | break; | |
c906108c SS |
4853 | } |
4854 | ||
b9c04fb2 | 4855 | return result; |
c906108c SS |
4856 | } |
4857 | ||
5f512a7d | 4858 | /* See symtab.h. */ |
c378eb4e | 4859 | |
5f512a7d AB |
4860 | std::string |
4861 | symbol_to_info_string (struct symbol *sym, int block, | |
4862 | enum search_domain kind) | |
c906108c | 4863 | { |
5f512a7d | 4864 | std::string str; |
05cba821 | 4865 | |
5f512a7d | 4866 | gdb_assert (block == GLOBAL_BLOCK || block == STATIC_BLOCK); |
b744723f | 4867 | |
176620f1 | 4868 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
5f512a7d | 4869 | str += "static "; |
c5aa993b | 4870 | |
c378eb4e | 4871 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4872 | if (kind == TYPES_DOMAIN |
4873 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 | 4874 | { |
5f512a7d AB |
4875 | string_file tmp_stream; |
4876 | ||
eb86c5e2 AB |
4877 | /* FIXME: For C (and C++) we end up with a difference in output here |
4878 | between how a typedef is printed, and non-typedefs are printed. | |
4879 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4880 | appear C-like, while TYPE_PRINT doesn't. | |
4881 | ||
4882 | For the struct printing case below, things are worse, we force | |
4883 | printing of the ";" in this function, which is going to be wrong | |
4884 | for languages that don't require a ";" between statements. */ | |
4885 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_TYPEDEF) | |
5f512a7d | 4886 | typedef_print (SYMBOL_TYPE (sym), sym, &tmp_stream); |
eb86c5e2 | 4887 | else |
5f512a7d AB |
4888 | type_print (SYMBOL_TYPE (sym), "", &tmp_stream, -1); |
4889 | str += tmp_stream.string (); | |
eb86c5e2 | 4890 | } |
c378eb4e | 4891 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4892 | else if (kind < TYPES_DOMAIN |
4893 | || (kind == TYPES_DOMAIN | |
4894 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c | 4895 | { |
5f512a7d AB |
4896 | string_file tmp_stream; |
4897 | ||
c906108c | 4898 | type_print (SYMBOL_TYPE (sym), |
c5aa993b | 4899 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
987012b8 | 4900 | ? "" : sym->print_name ()), |
5f512a7d | 4901 | &tmp_stream, 0); |
c906108c | 4902 | |
5f512a7d AB |
4903 | str += tmp_stream.string (); |
4904 | str += ";"; | |
c906108c | 4905 | } |
59c35742 AB |
4906 | /* Printing of modules is currently done here, maybe at some future |
4907 | point we might want a language specific method to print the module | |
4908 | symbol so that we can customise the output more. */ | |
4909 | else if (kind == MODULES_DOMAIN) | |
5f512a7d AB |
4910 | str += sym->print_name (); |
4911 | ||
4912 | return str; | |
4913 | } | |
4914 | ||
4915 | /* Helper function for symbol info commands, for example 'info functions', | |
4916 | 'info variables', etc. KIND is the kind of symbol we searched for, and | |
4917 | BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK | |
4918 | or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL, | |
4919 | print file and line number information for the symbol as well. Skip | |
4920 | printing the filename if it matches LAST. */ | |
4921 | ||
4922 | static void | |
4923 | print_symbol_info (enum search_domain kind, | |
4924 | struct symbol *sym, | |
4925 | int block, const char *last) | |
4926 | { | |
4927 | scoped_switch_to_sym_language_if_auto l (sym); | |
4928 | struct symtab *s = symbol_symtab (sym); | |
4929 | ||
4930 | if (last != NULL) | |
4931 | { | |
4932 | const char *s_filename = symtab_to_filename_for_display (s); | |
4933 | ||
4934 | if (filename_cmp (last, s_filename) != 0) | |
4935 | { | |
4936 | printf_filtered (_("\nFile %ps:\n"), | |
4937 | styled_string (file_name_style.style (), | |
4938 | s_filename)); | |
4939 | } | |
4940 | ||
4941 | if (SYMBOL_LINE (sym) != 0) | |
4942 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4943 | else | |
4944 | puts_filtered ("\t"); | |
4945 | } | |
4946 | ||
4947 | std::string str = symbol_to_info_string (sym, block, kind); | |
4948 | printf_filtered ("%s\n", str.c_str ()); | |
c906108c SS |
4949 | } |
4950 | ||
4951 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4952 | for non-debugging symbols to gdb_stdout. */ |
4953 | ||
c906108c | 4954 | static void |
7c7b6655 | 4955 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4956 | { |
08feed99 | 4957 | struct gdbarch *gdbarch = msymbol.objfile->arch (); |
3ac4495a MS |
4958 | char *tmp; |
4959 | ||
d80b854b | 4960 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4961 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4962 | & (CORE_ADDR) 0xffffffff, |
4963 | 8); | |
3ac4495a | 4964 | else |
77e371c0 | 4965 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4966 | 16); |
6a831f06 PA |
4967 | |
4968 | ui_file_style sym_style = (msymbol.minsym->text_p () | |
4969 | ? function_name_style.style () | |
4970 | : ui_file_style ()); | |
4971 | ||
4972 | printf_filtered (_("%ps %ps\n"), | |
4973 | styled_string (address_style.style (), tmp), | |
c9d95fa3 | 4974 | styled_string (sym_style, msymbol.minsym->print_name ())); |
c906108c SS |
4975 | } |
4976 | ||
4977 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4978 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4979 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4980 | matches. */ |
4981 | ||
c906108c | 4982 | static void |
4acfdd20 | 4983 | symtab_symbol_info (bool quiet, bool exclude_minsyms, |
12615cba PW |
4984 | const char *regexp, enum search_domain kind, |
4985 | const char *t_regexp, int from_tty) | |
c906108c | 4986 | { |
bc043ef3 | 4987 | static const char * const classnames[] = |
59c35742 | 4988 | {"variable", "function", "type", "module"}; |
c7dcbf88 | 4989 | const char *last_filename = ""; |
c906108c SS |
4990 | int first = 1; |
4991 | ||
59c35742 | 4992 | gdb_assert (kind != ALL_DOMAIN); |
e8930875 | 4993 | |
b16507e0 AB |
4994 | if (regexp != nullptr && *regexp == '\0') |
4995 | regexp = nullptr; | |
4996 | ||
470c0b1c AB |
4997 | global_symbol_searcher spec (kind, regexp); |
4998 | spec.set_symbol_type_regexp (t_regexp); | |
4999 | spec.set_exclude_minsyms (exclude_minsyms); | |
5000 | std::vector<symbol_search> symbols = spec.search (); | |
c906108c | 5001 | |
12615cba PW |
5002 | if (!quiet) |
5003 | { | |
5004 | if (regexp != NULL) | |
5005 | { | |
5006 | if (t_regexp != NULL) | |
5007 | printf_filtered | |
5008 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 5009 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
5010 | classnames[kind], regexp, t_regexp); |
5011 | else | |
5012 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
5013 | classnames[kind], regexp); | |
5014 | } | |
5015 | else | |
5016 | { | |
5017 | if (t_regexp != NULL) | |
5018 | printf_filtered | |
5019 | (_("All defined %ss" | |
0c95f9ed | 5020 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
5021 | classnames[kind], t_regexp); |
5022 | else | |
5023 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
5024 | } | |
5025 | } | |
c906108c | 5026 | |
b9c04fb2 | 5027 | for (const symbol_search &p : symbols) |
c906108c SS |
5028 | { |
5029 | QUIT; | |
5030 | ||
b9c04fb2 | 5031 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
5032 | { |
5033 | if (first) | |
5034 | { | |
12615cba PW |
5035 | if (!quiet) |
5036 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
5037 | first = 0; |
5038 | } | |
b9c04fb2 | 5039 | print_msymbol_info (p.msymbol); |
c5aa993b | 5040 | } |
c906108c | 5041 | else |
c5aa993b JM |
5042 | { |
5043 | print_symbol_info (kind, | |
b9c04fb2 TT |
5044 | p.symbol, |
5045 | p.block, | |
c5aa993b | 5046 | last_filename); |
d01060f0 | 5047 | last_filename |
b9c04fb2 | 5048 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 5049 | } |
c906108c | 5050 | } |
c906108c SS |
5051 | } |
5052 | ||
4acfdd20 AB |
5053 | /* Structure to hold the values of the options used by the 'info variables' |
5054 | and 'info functions' commands. These correspond to the -q, -t, and -n | |
5055 | options. */ | |
5056 | ||
095252be | 5057 | struct info_vars_funcs_options |
4acfdd20 | 5058 | { |
491144b5 CB |
5059 | bool quiet = false; |
5060 | bool exclude_minsyms = false; | |
4acfdd20 AB |
5061 | char *type_regexp = nullptr; |
5062 | ||
095252be | 5063 | ~info_vars_funcs_options () |
4acfdd20 AB |
5064 | { |
5065 | xfree (type_regexp); | |
5066 | } | |
5067 | }; | |
5068 | ||
5069 | /* The options used by the 'info variables' and 'info functions' | |
5070 | commands. */ | |
5071 | ||
095252be AT |
5072 | static const gdb::option::option_def info_vars_funcs_options_defs[] = { |
5073 | gdb::option::boolean_option_def<info_vars_funcs_options> { | |
4acfdd20 | 5074 | "q", |
095252be | 5075 | [] (info_vars_funcs_options *opt) { return &opt->quiet; }, |
4acfdd20 AB |
5076 | nullptr, /* show_cmd_cb */ |
5077 | nullptr /* set_doc */ | |
5078 | }, | |
5079 | ||
095252be | 5080 | gdb::option::boolean_option_def<info_vars_funcs_options> { |
4acfdd20 | 5081 | "n", |
095252be | 5082 | [] (info_vars_funcs_options *opt) { return &opt->exclude_minsyms; }, |
4acfdd20 AB |
5083 | nullptr, /* show_cmd_cb */ |
5084 | nullptr /* set_doc */ | |
5085 | }, | |
5086 | ||
095252be | 5087 | gdb::option::string_option_def<info_vars_funcs_options> { |
4acfdd20 | 5088 | "t", |
095252be AT |
5089 | [] (info_vars_funcs_options *opt) { return &opt->type_regexp; |
5090 | }, | |
4acfdd20 AB |
5091 | nullptr, /* show_cmd_cb */ |
5092 | nullptr /* set_doc */ | |
5093 | } | |
5094 | }; | |
5095 | ||
5096 | /* Returns the option group used by 'info variables' and 'info | |
5097 | functions'. */ | |
5098 | ||
5099 | static gdb::option::option_def_group | |
095252be | 5100 | make_info_vars_funcs_options_def_group (info_vars_funcs_options *opts) |
4acfdd20 | 5101 | { |
095252be | 5102 | return {{info_vars_funcs_options_defs}, opts}; |
4acfdd20 AB |
5103 | } |
5104 | ||
5105 | /* Command completer for 'info variables' and 'info functions'. */ | |
5106 | ||
5107 | static void | |
095252be AT |
5108 | info_vars_funcs_command_completer (struct cmd_list_element *ignore, |
5109 | completion_tracker &tracker, | |
5110 | const char *text, const char * /* word */) | |
4acfdd20 AB |
5111 | { |
5112 | const auto group | |
095252be | 5113 | = make_info_vars_funcs_options_def_group (nullptr); |
4acfdd20 AB |
5114 | if (gdb::option::complete_options |
5115 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5116 | return; | |
5117 | ||
5118 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5119 | symbol_completer (ignore, tracker, text, word); | |
5120 | } | |
5121 | ||
b16507e0 AB |
5122 | /* Implement the 'info variables' command. */ |
5123 | ||
0b39b52e | 5124 | static void |
12615cba | 5125 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 5126 | { |
095252be AT |
5127 | info_vars_funcs_options opts; |
5128 | auto grp = make_info_vars_funcs_options_def_group (&opts); | |
4acfdd20 AB |
5129 | gdb::option::process_options |
5130 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5131 | if (args != nullptr && *args == '\0') | |
5132 | args = nullptr; | |
b16507e0 | 5133 | |
4acfdd20 | 5134 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, VARIABLES_DOMAIN, |
b16507e0 | 5135 | opts.type_regexp, from_tty); |
0b39b52e TT |
5136 | } |
5137 | ||
b16507e0 | 5138 | /* Implement the 'info functions' command. */ |
12615cba | 5139 | |
c906108c | 5140 | static void |
12615cba | 5141 | info_functions_command (const char *args, int from_tty) |
c906108c | 5142 | { |
095252be AT |
5143 | info_vars_funcs_options opts; |
5144 | ||
5145 | auto grp = make_info_vars_funcs_options_def_group (&opts); | |
4acfdd20 AB |
5146 | gdb::option::process_options |
5147 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5148 | if (args != nullptr && *args == '\0') | |
5149 | args = nullptr; | |
b16507e0 | 5150 | |
4acfdd20 AB |
5151 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, |
5152 | FUNCTIONS_DOMAIN, opts.type_regexp, from_tty); | |
c906108c SS |
5153 | } |
5154 | ||
a8eab7c6 AB |
5155 | /* Holds the -q option for the 'info types' command. */ |
5156 | ||
5157 | struct info_types_options | |
5158 | { | |
491144b5 | 5159 | bool quiet = false; |
a8eab7c6 AB |
5160 | }; |
5161 | ||
5162 | /* The options used by the 'info types' command. */ | |
5163 | ||
5164 | static const gdb::option::option_def info_types_options_defs[] = { | |
5165 | gdb::option::boolean_option_def<info_types_options> { | |
5166 | "q", | |
5167 | [] (info_types_options *opt) { return &opt->quiet; }, | |
5168 | nullptr, /* show_cmd_cb */ | |
5169 | nullptr /* set_doc */ | |
5170 | } | |
5171 | }; | |
5172 | ||
5173 | /* Returns the option group used by 'info types'. */ | |
5174 | ||
5175 | static gdb::option::option_def_group | |
5176 | make_info_types_options_def_group (info_types_options *opts) | |
5177 | { | |
5178 | return {{info_types_options_defs}, opts}; | |
5179 | } | |
5180 | ||
5181 | /* Implement the 'info types' command. */ | |
357e46e7 | 5182 | |
c906108c | 5183 | static void |
a8eab7c6 | 5184 | info_types_command (const char *args, int from_tty) |
c906108c | 5185 | { |
a8eab7c6 AB |
5186 | info_types_options opts; |
5187 | ||
5188 | auto grp = make_info_types_options_def_group (&opts); | |
5189 | gdb::option::process_options | |
5190 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5191 | if (args != nullptr && *args == '\0') | |
5192 | args = nullptr; | |
4acfdd20 | 5193 | symtab_symbol_info (opts.quiet, false, args, TYPES_DOMAIN, NULL, from_tty); |
a8eab7c6 AB |
5194 | } |
5195 | ||
5196 | /* Command completer for 'info types' command. */ | |
5197 | ||
5198 | static void | |
5199 | info_types_command_completer (struct cmd_list_element *ignore, | |
5200 | completion_tracker &tracker, | |
5201 | const char *text, const char * /* word */) | |
5202 | { | |
5203 | const auto group | |
5204 | = make_info_types_options_def_group (nullptr); | |
5205 | if (gdb::option::complete_options | |
5206 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5207 | return; | |
5208 | ||
5209 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5210 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
5211 | } |
5212 | ||
59c35742 AB |
5213 | /* Implement the 'info modules' command. */ |
5214 | ||
5215 | static void | |
5216 | info_modules_command (const char *args, int from_tty) | |
5217 | { | |
5218 | info_types_options opts; | |
5219 | ||
5220 | auto grp = make_info_types_options_def_group (&opts); | |
5221 | gdb::option::process_options | |
5222 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5223 | if (args != nullptr && *args == '\0') | |
5224 | args = nullptr; | |
5225 | symtab_symbol_info (opts.quiet, true, args, MODULES_DOMAIN, NULL, | |
5226 | from_tty); | |
5227 | } | |
5228 | ||
c906108c | 5229 | static void |
0b39b52e | 5230 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 5231 | { |
c80049d3 | 5232 | std::string string; |
470c0b1c | 5233 | const char *file_name = nullptr; |
c906108c | 5234 | |
470c0b1c | 5235 | if (regexp != nullptr) |
8bd10a10 | 5236 | { |
0b39b52e | 5237 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5238 | |
8bd10a10 CM |
5239 | if (colon && *(colon + 1) != ':') |
5240 | { | |
5241 | int colon_index; | |
96142726 | 5242 | char *local_name; |
8bd10a10 CM |
5243 | |
5244 | colon_index = colon - regexp; | |
224c3ddb | 5245 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5246 | memcpy (local_name, regexp, colon_index); |
5247 | local_name[colon_index--] = 0; | |
5248 | while (isspace (local_name[colon_index])) | |
5249 | local_name[colon_index--] = 0; | |
5250 | file_name = local_name; | |
529480d0 | 5251 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5252 | } |
5253 | } | |
5254 | ||
470c0b1c AB |
5255 | global_symbol_searcher spec (FUNCTIONS_DOMAIN, regexp); |
5256 | if (file_name != nullptr) | |
5257 | spec.filenames.push_back (file_name); | |
5258 | std::vector<symbol_search> symbols = spec.search (); | |
c906108c | 5259 | |
c80049d3 | 5260 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5261 | for (const symbol_search &p : symbols) |
c906108c | 5262 | { |
b9c04fb2 | 5263 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5264 | { |
b9c04fb2 | 5265 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5266 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5267 | |
c80049d3 | 5268 | string = string_printf ("%s:'%s'", fullname, |
987012b8 | 5269 | p.symbol->linkage_name ()); |
c80049d3 | 5270 | break_command (&string[0], from_tty); |
c7dcbf88 | 5271 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5272 | } |
c906108c | 5273 | else |
c5aa993b | 5274 | { |
c80049d3 | 5275 | string = string_printf ("'%s'", |
c9d95fa3 | 5276 | p.msymbol.minsym->linkage_name ()); |
6214f497 | 5277 | |
c80049d3 | 5278 | break_command (&string[0], from_tty); |
c5aa993b | 5279 | printf_filtered ("<function, no debug info> %s;\n", |
c9d95fa3 | 5280 | p.msymbol.minsym->print_name ()); |
c5aa993b | 5281 | } |
c906108c | 5282 | } |
c906108c | 5283 | } |
c906108c | 5284 | \f |
c5aa993b | 5285 | |
c62446b1 | 5286 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5287 | |
5288 | static int | |
c62446b1 | 5289 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5290 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5291 | completion_match_result &match_res) |
5292 | { | |
d4c2a405 | 5293 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5294 | |
b5ec771e | 5295 | symbol_name_matcher_ftype *name_match |
618daa93 | 5296 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 5297 | |
a207cff2 | 5298 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5299 | } |
5300 | ||
b5ec771e | 5301 | /* See symtab.h. */ |
c906108c | 5302 | |
b5ec771e | 5303 | void |
eb3ff9a5 | 5304 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5305 | language symbol_language, |
eb3ff9a5 | 5306 | const char *symname, |
b5ec771e | 5307 | const lookup_name_info &lookup_name, |
0d5cff50 | 5308 | const char *text, const char *word) |
c906108c | 5309 | { |
b5ec771e PA |
5310 | completion_match_result &match_res |
5311 | = tracker.reset_completion_match_result (); | |
5312 | ||
c378eb4e | 5313 | /* Clip symbols that cannot match. */ |
c62446b1 | 5314 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 5315 | return; |
c906108c | 5316 | |
b5ec771e PA |
5317 | /* Refresh SYMNAME from the match string. It's potentially |
5318 | different depending on language. (E.g., on Ada, the match may be | |
5319 | the encoded symbol name wrapped in "<>"). */ | |
5320 | symname = match_res.match.match (); | |
5321 | gdb_assert (symname != NULL); | |
5322 | ||
c906108c | 5323 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5324 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5325 | |
5326 | { | |
60a20c19 PA |
5327 | gdb::unique_xmalloc_ptr<char> completion |
5328 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5329 | |
a207cff2 PA |
5330 | /* Here we pass the match-for-lcd object to add_completion. Some |
5331 | languages match the user text against substrings of symbol | |
5332 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5333 | "std::vector::push_back", "std::string::push_back", etc., and | |
5334 | in this case we want the completion lowest common denominator | |
5335 | to be "push_back" instead of "std::". */ | |
5336 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5337 | &match_res.match_for_lcd, text, word); |
c906108c SS |
5338 | } |
5339 | } | |
5340 | ||
6da67eb1 PA |
5341 | /* completion_list_add_name wrapper for struct symbol. */ |
5342 | ||
5343 | static void | |
eb3ff9a5 PA |
5344 | completion_list_add_symbol (completion_tracker &tracker, |
5345 | symbol *sym, | |
b5ec771e | 5346 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5347 | const char *text, const char *word) |
5348 | { | |
c1b5c1eb | 5349 | completion_list_add_name (tracker, sym->language (), |
987012b8 | 5350 | sym->natural_name (), |
1b026119 | 5351 | lookup_name, text, word); |
19a2740f AB |
5352 | |
5353 | /* C++ function symbols include the parameters within both the msymbol | |
5354 | name and the symbol name. The problem is that the msymbol name will | |
5355 | describe the parameters in the most basic way, with typedefs stripped | |
5356 | out, while the symbol name will represent the types as they appear in | |
5357 | the program. This means we will see duplicate entries in the | |
5358 | completion tracker. The following converts the symbol name back to | |
5359 | the msymbol name and removes the msymbol name from the completion | |
5360 | tracker. */ | |
5361 | if (sym->language () == language_cplus | |
5362 | && SYMBOL_DOMAIN (sym) == VAR_DOMAIN | |
5363 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
5364 | { | |
5365 | /* The call to canonicalize returns the empty string if the input | |
5366 | string is already in canonical form, thanks to this we don't | |
5367 | remove the symbol we just added above. */ | |
5368 | std::string str | |
5369 | = cp_canonicalize_string_no_typedefs (sym->natural_name ()); | |
5370 | if (!str.empty ()) | |
5371 | tracker.remove_completion (str.c_str ()); | |
5372 | } | |
6da67eb1 PA |
5373 | } |
5374 | ||
5375 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5376 | ||
5377 | static void | |
eb3ff9a5 PA |
5378 | completion_list_add_msymbol (completion_tracker &tracker, |
5379 | minimal_symbol *sym, | |
b5ec771e | 5380 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5381 | const char *text, const char *word) |
5382 | { | |
c1b5c1eb | 5383 | completion_list_add_name (tracker, sym->language (), |
c9d95fa3 | 5384 | sym->natural_name (), |
1b026119 | 5385 | lookup_name, text, word); |
6da67eb1 PA |
5386 | } |
5387 | ||
b5ec771e | 5388 | |
69636828 AF |
5389 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5390 | again and feed all the selectors into the mill. */ | |
5391 | ||
5392 | static void | |
eb3ff9a5 PA |
5393 | completion_list_objc_symbol (completion_tracker &tracker, |
5394 | struct minimal_symbol *msymbol, | |
b5ec771e | 5395 | const lookup_name_info &lookup_name, |
0d5cff50 | 5396 | const char *text, const char *word) |
69636828 AF |
5397 | { |
5398 | static char *tmp = NULL; | |
5399 | static unsigned int tmplen = 0; | |
9af17804 | 5400 | |
0d5cff50 | 5401 | const char *method, *category, *selector; |
69636828 | 5402 | char *tmp2 = NULL; |
9af17804 | 5403 | |
c9d95fa3 | 5404 | method = msymbol->natural_name (); |
69636828 AF |
5405 | |
5406 | /* Is it a method? */ | |
5407 | if ((method[0] != '-') && (method[0] != '+')) | |
5408 | return; | |
5409 | ||
1b026119 | 5410 | if (text[0] == '[') |
69636828 | 5411 | /* Complete on shortened method method. */ |
b5ec771e PA |
5412 | completion_list_add_name (tracker, language_objc, |
5413 | method + 1, | |
5414 | lookup_name, | |
1b026119 | 5415 | text, word); |
9af17804 | 5416 | |
69636828 AF |
5417 | while ((strlen (method) + 1) >= tmplen) |
5418 | { | |
5419 | if (tmplen == 0) | |
5420 | tmplen = 1024; | |
5421 | else | |
5422 | tmplen *= 2; | |
224c3ddb | 5423 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5424 | } |
5425 | selector = strchr (method, ' '); | |
5426 | if (selector != NULL) | |
5427 | selector++; | |
9af17804 | 5428 | |
69636828 | 5429 | category = strchr (method, '('); |
9af17804 | 5430 | |
69636828 AF |
5431 | if ((category != NULL) && (selector != NULL)) |
5432 | { | |
5433 | memcpy (tmp, method, (category - method)); | |
5434 | tmp[category - method] = ' '; | |
5435 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5436 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5437 | lookup_name, text, word); |
5438 | if (text[0] == '[') | |
b5ec771e | 5439 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5440 | lookup_name, text, word); |
69636828 | 5441 | } |
9af17804 | 5442 | |
69636828 AF |
5443 | if (selector != NULL) |
5444 | { | |
5445 | /* Complete on selector only. */ | |
5446 | strcpy (tmp, selector); | |
5447 | tmp2 = strchr (tmp, ']'); | |
5448 | if (tmp2 != NULL) | |
5449 | *tmp2 = '\0'; | |
9af17804 | 5450 | |
b5ec771e | 5451 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5452 | lookup_name, text, word); |
69636828 AF |
5453 | } |
5454 | } | |
5455 | ||
5456 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5457 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5458 | |
6f937416 PA |
5459 | static const char * |
5460 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5461 | { |
5462 | for (; p > text; --p) | |
5463 | { | |
5464 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5465 | continue; | |
5466 | else | |
5467 | { | |
5468 | if ((current_language->la_language == language_objc)) | |
5469 | { | |
c378eb4e | 5470 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5471 | continue; |
5472 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5473 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5474 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5475 | { /* Might be part of a method name. */ |
6f937416 | 5476 | const char *t = p; |
69636828 AF |
5477 | |
5478 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5479 | that we are in the middle of a method name. However, | |
5480 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5481 | Unfortunately we have to find it now to decide. */ | |
5482 | ||
5483 | while (t > text) | |
5484 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5485 | t[-1] == ' ' || t[-1] == ':' || | |
5486 | t[-1] == '(' || t[-1] == ')') | |
5487 | --t; | |
5488 | else | |
5489 | break; | |
5490 | ||
5491 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5492 | p = t - 2; /* Method name detected. */ |
5493 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5494 | } |
5495 | } | |
5496 | break; | |
5497 | } | |
5498 | } | |
5499 | return p; | |
5500 | } | |
5501 | ||
edb3359d | 5502 | static void |
eb3ff9a5 PA |
5503 | completion_list_add_fields (completion_tracker &tracker, |
5504 | struct symbol *sym, | |
b5ec771e | 5505 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5506 | const char *text, const char *word) |
edb3359d DJ |
5507 | { |
5508 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5509 | { | |
5510 | struct type *t = SYMBOL_TYPE (sym); | |
5511 | enum type_code c = TYPE_CODE (t); | |
5512 | int j; | |
5513 | ||
5514 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5515 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5516 | if (TYPE_FIELD_NAME (t, j)) | |
c1b5c1eb | 5517 | completion_list_add_name (tracker, sym->language (), |
b5ec771e | 5518 | TYPE_FIELD_NAME (t, j), |
1b026119 | 5519 | lookup_name, text, word); |
edb3359d DJ |
5520 | } |
5521 | } | |
5522 | ||
f9d67a22 PA |
5523 | /* See symtab.h. */ |
5524 | ||
5525 | bool | |
5526 | symbol_is_function_or_method (symbol *sym) | |
5527 | { | |
5528 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5529 | { | |
5530 | case TYPE_CODE_FUNC: | |
5531 | case TYPE_CODE_METHOD: | |
5532 | return true; | |
5533 | default: | |
5534 | return false; | |
5535 | } | |
5536 | } | |
5537 | ||
5538 | /* See symtab.h. */ | |
5539 | ||
5540 | bool | |
5541 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5542 | { | |
5543 | switch (MSYMBOL_TYPE (msymbol)) | |
5544 | { | |
5545 | case mst_text: | |
5546 | case mst_text_gnu_ifunc: | |
5547 | case mst_solib_trampoline: | |
5548 | case mst_file_text: | |
5549 | return true; | |
5550 | default: | |
5551 | return false; | |
5552 | } | |
5553 | } | |
5554 | ||
ca31ab1d PA |
5555 | /* See symtab.h. */ |
5556 | ||
5557 | bound_minimal_symbol | |
5558 | find_gnu_ifunc (const symbol *sym) | |
5559 | { | |
5560 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5561 | return {}; | |
5562 | ||
987012b8 | 5563 | lookup_name_info lookup_name (sym->search_name (), |
ca31ab1d PA |
5564 | symbol_name_match_type::SEARCH_NAME); |
5565 | struct objfile *objfile = symbol_objfile (sym); | |
5566 | ||
2b1ffcfd | 5567 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5568 | minimal_symbol *ifunc = NULL; |
5569 | ||
5570 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5571 | [&] (minimal_symbol *minsym) | |
5572 | { | |
5573 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5574 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5575 | { |
f50776aa PA |
5576 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5577 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5578 | { | |
08feed99 | 5579 | struct gdbarch *gdbarch = objfile->arch (); |
8b88a78e PA |
5580 | msym_addr |
5581 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5582 | msym_addr, | |
5583 | current_top_target ()); | |
f50776aa PA |
5584 | } |
5585 | if (msym_addr == address) | |
5586 | { | |
5587 | ifunc = minsym; | |
5588 | return true; | |
5589 | } | |
ca31ab1d PA |
5590 | } |
5591 | return false; | |
5592 | }); | |
5593 | ||
5594 | if (ifunc != NULL) | |
5595 | return {ifunc, objfile}; | |
5596 | return {}; | |
5597 | } | |
5598 | ||
e11c72c7 GB |
5599 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5600 | ||
5601 | static void | |
5602 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5603 | completion_tracker &tracker, |
f9d67a22 | 5604 | complete_symbol_mode mode, |
b5ec771e | 5605 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5606 | const char *text, const char *word, |
5607 | enum type_code code) | |
5608 | { | |
5609 | struct symbol *sym; | |
5610 | const struct block *b; | |
5611 | struct block_iterator iter; | |
5612 | int i; | |
5613 | ||
ff6fa247 GB |
5614 | if (cust == NULL) |
5615 | return; | |
5616 | ||
e11c72c7 GB |
5617 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5618 | { | |
5619 | QUIT; | |
5620 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5621 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5622 | { | |
f9d67a22 PA |
5623 | if (completion_skip_symbol (mode, sym)) |
5624 | continue; | |
5625 | ||
e11c72c7 GB |
5626 | if (code == TYPE_CODE_UNDEF |
5627 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5628 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5629 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5630 | lookup_name, |
e11c72c7 GB |
5631 | text, word); |
5632 | } | |
5633 | } | |
5634 | } | |
5635 | ||
eb3ff9a5 PA |
5636 | void |
5637 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5638 | (completion_tracker &tracker, complete_symbol_mode mode, |
5639 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5640 | const char *text, const char *word, |
5641 | const char *break_on, enum type_code code) | |
c906108c | 5642 | { |
41d27058 JB |
5643 | /* Problem: All of the symbols have to be copied because readline |
5644 | frees them. I'm not going to worry about this; hopefully there | |
5645 | won't be that many. */ | |
5646 | ||
de4f826b | 5647 | struct symbol *sym; |
3977b71f | 5648 | const struct block *b; |
edb3359d | 5649 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5650 | struct block_iterator iter; |
c906108c | 5651 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5652 | const char *sym_text; |
c906108c | 5653 | |
41d27058 | 5654 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5655 | if (mode == complete_symbol_mode::LINESPEC) |
5656 | sym_text = text; | |
5657 | else | |
c906108c | 5658 | { |
6f937416 | 5659 | const char *p; |
c906108c | 5660 | char quote_found; |
6f937416 | 5661 | const char *quote_pos = NULL; |
c906108c SS |
5662 | |
5663 | /* First see if this is a quoted string. */ | |
5664 | quote_found = '\0'; | |
5665 | for (p = text; *p != '\0'; ++p) | |
5666 | { | |
5667 | if (quote_found != '\0') | |
5668 | { | |
5669 | if (*p == quote_found) | |
5670 | /* Found close quote. */ | |
5671 | quote_found = '\0'; | |
5672 | else if (*p == '\\' && p[1] == quote_found) | |
5673 | /* A backslash followed by the quote character | |
c5aa993b | 5674 | doesn't end the string. */ |
c906108c SS |
5675 | ++p; |
5676 | } | |
5677 | else if (*p == '\'' || *p == '"') | |
5678 | { | |
5679 | quote_found = *p; | |
5680 | quote_pos = p; | |
5681 | } | |
5682 | } | |
5683 | if (quote_found == '\'') | |
5684 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5685 | sym_text = quote_pos + 1; | |
5686 | else if (quote_found == '"') | |
5687 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5688 | to complete it any other way. */ |
c94fdfd0 | 5689 | { |
ef0b411a | 5690 | return; |
c94fdfd0 | 5691 | } |
c906108c SS |
5692 | else |
5693 | { | |
5694 | /* It is not a quoted string. Break it based on the characters | |
5695 | which are in symbols. */ | |
5696 | while (p > text) | |
5697 | { | |
95699ff0 | 5698 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5699 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5700 | --p; |
5701 | else | |
5702 | break; | |
5703 | } | |
5704 | sym_text = p; | |
5705 | } | |
5706 | } | |
5707 | ||
1b026119 | 5708 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5709 | |
c906108c SS |
5710 | /* At this point scan through the misc symbol vectors and add each |
5711 | symbol you find to the list. Eventually we want to ignore | |
5712 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5713 | handled by the psymtab code below). */ |
c906108c | 5714 | |
2f68a895 TT |
5715 | if (code == TYPE_CODE_UNDEF) |
5716 | { | |
2030c079 | 5717 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5718 | { |
7932255d | 5719 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5720 | { |
5721 | QUIT; | |
9af17804 | 5722 | |
5325b9bf TT |
5723 | if (completion_skip_symbol (mode, msymbol)) |
5724 | continue; | |
f9d67a22 | 5725 | |
5325b9bf TT |
5726 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5727 | sym_text, word); | |
eb3ff9a5 | 5728 | |
5325b9bf TT |
5729 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5730 | sym_text, word); | |
5731 | } | |
2f68a895 TT |
5732 | } |
5733 | } | |
c906108c | 5734 | |
e11c72c7 | 5735 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5736 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5737 | { |
b669c953 | 5738 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5739 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5740 | sym_text, word, code); | |
5741 | } | |
e11c72c7 | 5742 | |
14bc53a8 PA |
5743 | /* Look through the partial symtabs for all symbols which begin by |
5744 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5745 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5746 | lookup_name, |
5747 | NULL, | |
14bc53a8 PA |
5748 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5749 | { | |
5750 | add_symtab_completions (symtab, | |
f9d67a22 | 5751 | tracker, mode, lookup_name, |
1b026119 | 5752 | sym_text, word, code); |
14bc53a8 PA |
5753 | }, |
5754 | ALL_DOMAIN); | |
e11c72c7 | 5755 | |
c906108c | 5756 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5757 | complete on local vars). Also catch fields of types defined in |
5758 | this places which match our text string. Only complete on types | |
c378eb4e | 5759 | visible from current context. */ |
edb3359d DJ |
5760 | |
5761 | b = get_selected_block (0); | |
5762 | surrounding_static_block = block_static_block (b); | |
5763 | surrounding_global_block = block_global_block (b); | |
5764 | if (surrounding_static_block != NULL) | |
5765 | while (b != surrounding_static_block) | |
5766 | { | |
5767 | QUIT; | |
c906108c | 5768 | |
edb3359d DJ |
5769 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5770 | { | |
2f68a895 TT |
5771 | if (code == TYPE_CODE_UNDEF) |
5772 | { | |
b5ec771e | 5773 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5774 | sym_text, word); |
b5ec771e | 5775 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5776 | sym_text, word); |
2f68a895 TT |
5777 | } |
5778 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5779 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5780 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5781 | sym_text, word); |
edb3359d | 5782 | } |
c5aa993b | 5783 | |
edb3359d DJ |
5784 | /* Stop when we encounter an enclosing function. Do not stop for |
5785 | non-inlined functions - the locals of the enclosing function | |
5786 | are in scope for a nested function. */ | |
5787 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5788 | break; | |
5789 | b = BLOCK_SUPERBLOCK (b); | |
5790 | } | |
c906108c | 5791 | |
edb3359d | 5792 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5793 | |
2f68a895 TT |
5794 | if (code == TYPE_CODE_UNDEF) |
5795 | { | |
5796 | if (surrounding_static_block != NULL) | |
5797 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5798 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5799 | sym_text, word); |
edb3359d | 5800 | |
2f68a895 TT |
5801 | if (surrounding_global_block != NULL) |
5802 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5803 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5804 | sym_text, word); |
2f68a895 | 5805 | } |
c906108c | 5806 | |
2f68a895 TT |
5807 | /* Skip macros if we are completing a struct tag -- arguable but |
5808 | usually what is expected. */ | |
5809 | if (current_language->la_macro_expansion == macro_expansion_c | |
5810 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5811 | { |
f6c2623e | 5812 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5813 | |
14bc53a8 PA |
5814 | /* This adds a macro's name to the current completion list. */ |
5815 | auto add_macro_name = [&] (const char *macro_name, | |
5816 | const macro_definition *, | |
5817 | macro_source_file *, | |
5818 | int) | |
5819 | { | |
1b026119 PA |
5820 | completion_list_add_name (tracker, language_c, macro_name, |
5821 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5822 | }; |
5823 | ||
9a044a89 TT |
5824 | /* Add any macros visible in the default scope. Note that this |
5825 | may yield the occasional wrong result, because an expression | |
5826 | might be evaluated in a scope other than the default. For | |
5827 | example, if the user types "break file:line if <TAB>", the | |
5828 | resulting expression will be evaluated at "file:line" -- but | |
5829 | at there does not seem to be a way to detect this at | |
5830 | completion time. */ | |
5831 | scope = default_macro_scope (); | |
5832 | if (scope) | |
f6c2623e TT |
5833 | macro_for_each_in_scope (scope->file, scope->line, |
5834 | add_macro_name); | |
9a044a89 TT |
5835 | |
5836 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5837 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5838 | } |
ef0b411a GB |
5839 | } |
5840 | ||
eb3ff9a5 PA |
5841 | void |
5842 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5843 | complete_symbol_mode mode, |
b5ec771e | 5844 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5845 | const char *text, const char *word, |
5846 | enum type_code code) | |
f55ee35c | 5847 | { |
c6756f62 | 5848 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5849 | name_match_type, |
eb3ff9a5 PA |
5850 | text, word, "", |
5851 | code); | |
f55ee35c JK |
5852 | } |
5853 | ||
eb3ff9a5 PA |
5854 | /* Collect all symbols (regardless of class) which begin by matching |
5855 | TEXT. */ | |
41d27058 | 5856 | |
eb3ff9a5 PA |
5857 | void |
5858 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5859 | complete_symbol_mode mode, |
b5ec771e | 5860 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5861 | const char *text, const char *word) |
41d27058 | 5862 | { |
c6756f62 | 5863 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5864 | name_match_type, |
eb3ff9a5 PA |
5865 | text, word, |
5866 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5867 | } |
5868 | ||
eb3ff9a5 PA |
5869 | /* Like collect_symbol_completion_matches, but only collect |
5870 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5871 | |
eb3ff9a5 PA |
5872 | void |
5873 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5874 | const char *text, const char *word, | |
5875 | enum type_code code) | |
2f68a895 | 5876 | { |
c6756f62 | 5877 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5878 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5879 | |
2f68a895 TT |
5880 | gdb_assert (code == TYPE_CODE_UNION |
5881 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5882 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5883 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5884 | name_match_type, |
eb3ff9a5 | 5885 | text, word, code); |
41d27058 JB |
5886 | } |
5887 | ||
eb3ff9a5 PA |
5888 | /* Like collect_symbol_completion_matches, but collects a list of |
5889 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5890 | |
eb3ff9a5 PA |
5891 | void |
5892 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5893 | complete_symbol_mode mode, |
b5ec771e | 5894 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5895 | const char *text, const char *word, |
5896 | const char *srcfile) | |
c94fdfd0 | 5897 | { |
c94fdfd0 | 5898 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5899 | const char *sym_text; |
c94fdfd0 EZ |
5900 | |
5901 | /* Now look for the symbol we are supposed to complete on. | |
5902 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5903 | if (mode == complete_symbol_mode::LINESPEC) |
5904 | sym_text = text; | |
5905 | else | |
c94fdfd0 | 5906 | { |
6f937416 | 5907 | const char *p; |
c94fdfd0 | 5908 | char quote_found; |
6f937416 | 5909 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5910 | |
5911 | /* First see if this is a quoted string. */ | |
5912 | quote_found = '\0'; | |
5913 | for (p = text; *p != '\0'; ++p) | |
5914 | { | |
5915 | if (quote_found != '\0') | |
5916 | { | |
5917 | if (*p == quote_found) | |
5918 | /* Found close quote. */ | |
5919 | quote_found = '\0'; | |
5920 | else if (*p == '\\' && p[1] == quote_found) | |
5921 | /* A backslash followed by the quote character | |
5922 | doesn't end the string. */ | |
5923 | ++p; | |
5924 | } | |
5925 | else if (*p == '\'' || *p == '"') | |
5926 | { | |
5927 | quote_found = *p; | |
5928 | quote_pos = p; | |
5929 | } | |
5930 | } | |
5931 | if (quote_found == '\'') | |
5932 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5933 | sym_text = quote_pos + 1; | |
5934 | else if (quote_found == '"') | |
5935 | /* A double-quoted string is never a symbol, nor does it make sense | |
5936 | to complete it any other way. */ | |
5937 | { | |
eb3ff9a5 | 5938 | return; |
c94fdfd0 EZ |
5939 | } |
5940 | else | |
5941 | { | |
69636828 AF |
5942 | /* Not a quoted string. */ |
5943 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5944 | } |
5945 | } | |
5946 | ||
1b026119 | 5947 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5948 | |
8f14146e PA |
5949 | /* Go through symtabs for SRCFILE and check the externs and statics |
5950 | for symbols which match. */ | |
5951 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5952 | { |
8f14146e | 5953 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5954 | tracker, mode, lookup_name, |
1b026119 | 5955 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5956 | return false; |
5957 | }); | |
e27852be DE |
5958 | } |
5959 | ||
c94fdfd0 EZ |
5960 | /* A helper function for make_source_files_completion_list. It adds |
5961 | another file name to a list of possible completions, growing the | |
5962 | list as necessary. */ | |
5963 | ||
5964 | static void | |
6f937416 | 5965 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5966 | completion_list *list) |
c94fdfd0 | 5967 | { |
60a20c19 | 5968 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5969 | } |
5970 | ||
5971 | static int | |
5972 | not_interesting_fname (const char *fname) | |
5973 | { | |
5974 | static const char *illegal_aliens[] = { | |
5975 | "_globals_", /* inserted by coff_symtab_read */ | |
5976 | NULL | |
5977 | }; | |
5978 | int i; | |
5979 | ||
5980 | for (i = 0; illegal_aliens[i]; i++) | |
5981 | { | |
0ba1096a | 5982 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5983 | return 1; |
5984 | } | |
5985 | return 0; | |
5986 | } | |
5987 | ||
ccefe4c4 TT |
5988 | /* An object of this type is passed as the user_data argument to |
5989 | map_partial_symbol_filenames. */ | |
5990 | struct add_partial_filename_data | |
5991 | { | |
9fdc877b | 5992 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5993 | const char *text; |
5994 | const char *word; | |
ccefe4c4 | 5995 | int text_len; |
eb3ff9a5 | 5996 | completion_list *list; |
ccefe4c4 TT |
5997 | }; |
5998 | ||
5999 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 6000 | |
ccefe4c4 | 6001 | static void |
2837d59e | 6002 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
6003 | void *user_data) |
6004 | { | |
19ba03f4 SM |
6005 | struct add_partial_filename_data *data |
6006 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
6007 | |
6008 | if (not_interesting_fname (filename)) | |
6009 | return; | |
bbf2f4df | 6010 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 6011 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
6012 | { |
6013 | /* This file matches for a completion; add it to the | |
6014 | current list of matches. */ | |
49c4e619 | 6015 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
6016 | } |
6017 | else | |
6018 | { | |
6019 | const char *base_name = lbasename (filename); | |
433759f7 | 6020 | |
ccefe4c4 | 6021 | if (base_name != filename |
bbf2f4df | 6022 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 6023 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 6024 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
6025 | } |
6026 | } | |
6027 | ||
eb3ff9a5 | 6028 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 6029 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 6030 | program. */ |
c94fdfd0 | 6031 | |
eb3ff9a5 | 6032 | completion_list |
6f937416 | 6033 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 6034 | { |
c94fdfd0 | 6035 | size_t text_len = strlen (text); |
eb3ff9a5 | 6036 | completion_list list; |
31889e00 | 6037 | const char *base_name; |
ccefe4c4 | 6038 | struct add_partial_filename_data datum; |
c94fdfd0 | 6039 | |
c94fdfd0 EZ |
6040 | if (!have_full_symbols () && !have_partial_symbols ()) |
6041 | return list; | |
6042 | ||
bbf2f4df | 6043 | filename_seen_cache filenames_seen; |
9fdc877b | 6044 | |
2030c079 | 6045 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 6046 | { |
b669c953 | 6047 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 6048 | { |
8b31193a TT |
6049 | for (symtab *s : compunit_filetabs (cu)) |
6050 | { | |
6051 | if (not_interesting_fname (s->filename)) | |
6052 | continue; | |
6053 | if (!filenames_seen.seen (s->filename) | |
6054 | && filename_ncmp (s->filename, text, text_len) == 0) | |
6055 | { | |
6056 | /* This file matches for a completion; add it to the current | |
6057 | list of matches. */ | |
6058 | add_filename_to_list (s->filename, text, word, &list); | |
6059 | } | |
6060 | else | |
6061 | { | |
6062 | /* NOTE: We allow the user to type a base name when the | |
6063 | debug info records leading directories, but not the other | |
6064 | way around. This is what subroutines of breakpoint | |
6065 | command do when they parse file names. */ | |
6066 | base_name = lbasename (s->filename); | |
6067 | if (base_name != s->filename | |
6068 | && !filenames_seen.seen (base_name) | |
6069 | && filename_ncmp (base_name, text, text_len) == 0) | |
6070 | add_filename_to_list (base_name, text, word, &list); | |
6071 | } | |
6072 | } | |
c94fdfd0 EZ |
6073 | } |
6074 | } | |
6075 | ||
bbf2f4df | 6076 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
6077 | datum.text = text; |
6078 | datum.word = word; | |
6079 | datum.text_len = text_len; | |
6080 | datum.list = &list; | |
bb4142cf DE |
6081 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
6082 | 0 /*need_fullname*/); | |
9fdc877b | 6083 | |
c94fdfd0 EZ |
6084 | return list; |
6085 | } | |
c906108c | 6086 | \f |
51cc5b07 | 6087 | /* Track MAIN */ |
32ac0d11 TT |
6088 | |
6089 | /* Return the "main_info" object for the current program space. If | |
6090 | the object has not yet been created, create it and fill in some | |
6091 | default values. */ | |
6092 | ||
6093 | static struct main_info * | |
6094 | get_main_info (void) | |
6095 | { | |
a32ad8c5 | 6096 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
6097 | |
6098 | if (info == NULL) | |
6099 | { | |
3d548a53 TT |
6100 | /* It may seem strange to store the main name in the progspace |
6101 | and also in whatever objfile happens to see a main name in | |
6102 | its debug info. The reason for this is mainly historical: | |
6103 | gdb returned "main" as the name even if no function named | |
6104 | "main" was defined the program; and this approach lets us | |
6105 | keep compatibility. */ | |
a32ad8c5 | 6106 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
6107 | } |
6108 | ||
6109 | return info; | |
6110 | } | |
6111 | ||
3d548a53 | 6112 | static void |
9e6c82ad | 6113 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 6114 | { |
32ac0d11 TT |
6115 | struct main_info *info = get_main_info (); |
6116 | ||
6117 | if (info->name_of_main != NULL) | |
51cc5b07 | 6118 | { |
32ac0d11 TT |
6119 | xfree (info->name_of_main); |
6120 | info->name_of_main = NULL; | |
6121 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
6122 | } |
6123 | if (name != NULL) | |
6124 | { | |
32ac0d11 TT |
6125 | info->name_of_main = xstrdup (name); |
6126 | info->language_of_main = lang; | |
51cc5b07 AC |
6127 | } |
6128 | } | |
6129 | ||
ea53e89f JB |
6130 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
6131 | accordingly. */ | |
6132 | ||
6133 | static void | |
6134 | find_main_name (void) | |
6135 | { | |
cd6c7346 | 6136 | const char *new_main_name; |
3d548a53 TT |
6137 | |
6138 | /* First check the objfiles to see whether a debuginfo reader has | |
6139 | picked up the appropriate main name. Historically the main name | |
6140 | was found in a more or less random way; this approach instead | |
6141 | relies on the order of objfile creation -- which still isn't | |
6142 | guaranteed to get the correct answer, but is just probably more | |
6143 | accurate. */ | |
2030c079 | 6144 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
6145 | { |
6146 | if (objfile->per_bfd->name_of_main != NULL) | |
6147 | { | |
6148 | set_main_name (objfile->per_bfd->name_of_main, | |
6149 | objfile->per_bfd->language_of_main); | |
6150 | return; | |
6151 | } | |
6152 | } | |
ea53e89f JB |
6153 | |
6154 | /* Try to see if the main procedure is in Ada. */ | |
6155 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
6156 | be to add a new method in the language vector, and call this | |
6157 | method for each language until one of them returns a non-empty | |
6158 | name. This would allow us to remove this hard-coded call to | |
6159 | an Ada function. It is not clear that this is a better approach | |
6160 | at this point, because all methods need to be written in a way | |
c378eb4e | 6161 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
6162 | important that a method does not return a wrong name for the main |
6163 | procedure if the main procedure is actually written in a different | |
6164 | language. It is easy to guaranty this with Ada, since we use a | |
6165 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 6166 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
6167 | be guarantied for languages such as C, for instance. This suggests |
6168 | that order of call for these methods becomes important, which means | |
6169 | a more complicated approach. */ | |
6170 | new_main_name = ada_main_name (); | |
6171 | if (new_main_name != NULL) | |
9af17804 | 6172 | { |
9e6c82ad | 6173 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
6174 | return; |
6175 | } | |
6176 | ||
63778547 IB |
6177 | new_main_name = d_main_name (); |
6178 | if (new_main_name != NULL) | |
6179 | { | |
6180 | set_main_name (new_main_name, language_d); | |
6181 | return; | |
6182 | } | |
6183 | ||
a766d390 DE |
6184 | new_main_name = go_main_name (); |
6185 | if (new_main_name != NULL) | |
6186 | { | |
9e6c82ad | 6187 | set_main_name (new_main_name, language_go); |
a766d390 DE |
6188 | return; |
6189 | } | |
6190 | ||
cd6c7346 PM |
6191 | new_main_name = pascal_main_name (); |
6192 | if (new_main_name != NULL) | |
9af17804 | 6193 | { |
9e6c82ad | 6194 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
6195 | return; |
6196 | } | |
6197 | ||
ea53e89f JB |
6198 | /* The languages above didn't identify the name of the main procedure. |
6199 | Fallback to "main". */ | |
d3214198 TV |
6200 | |
6201 | /* Try to find language for main in psymtabs. */ | |
6202 | enum language lang | |
6203 | = find_quick_global_symbol_language ("main", VAR_DOMAIN); | |
6204 | if (lang != language_unknown) | |
6205 | { | |
6206 | set_main_name ("main", lang); | |
6207 | return; | |
6208 | } | |
6209 | ||
9e6c82ad | 6210 | set_main_name ("main", language_unknown); |
ea53e89f JB |
6211 | } |
6212 | ||
cd215b2e TT |
6213 | /* See symtab.h. */ |
6214 | ||
6215 | const char * | |
6216 | main_name () | |
51cc5b07 | 6217 | { |
32ac0d11 TT |
6218 | struct main_info *info = get_main_info (); |
6219 | ||
6220 | if (info->name_of_main == NULL) | |
ea53e89f JB |
6221 | find_main_name (); |
6222 | ||
32ac0d11 | 6223 | return info->name_of_main; |
51cc5b07 AC |
6224 | } |
6225 | ||
9e6c82ad TT |
6226 | /* Return the language of the main function. If it is not known, |
6227 | return language_unknown. */ | |
6228 | ||
6229 | enum language | |
6230 | main_language (void) | |
6231 | { | |
32ac0d11 TT |
6232 | struct main_info *info = get_main_info (); |
6233 | ||
6234 | if (info->name_of_main == NULL) | |
6235 | find_main_name (); | |
6236 | ||
6237 | return info->language_of_main; | |
9e6c82ad TT |
6238 | } |
6239 | ||
ea53e89f JB |
6240 | /* Handle ``executable_changed'' events for the symtab module. */ |
6241 | ||
6242 | static void | |
781b42b0 | 6243 | symtab_observer_executable_changed (void) |
ea53e89f JB |
6244 | { |
6245 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 6246 | set_main_name (NULL, language_unknown); |
ea53e89f | 6247 | } |
51cc5b07 | 6248 | |
a6c727b2 DJ |
6249 | /* Return 1 if the supplied producer string matches the ARM RealView |
6250 | compiler (armcc). */ | |
6251 | ||
ececd218 | 6252 | bool |
a6c727b2 DJ |
6253 | producer_is_realview (const char *producer) |
6254 | { | |
6255 | static const char *const arm_idents[] = { | |
6256 | "ARM C Compiler, ADS", | |
6257 | "Thumb C Compiler, ADS", | |
6258 | "ARM C++ Compiler, ADS", | |
6259 | "Thumb C++ Compiler, ADS", | |
6260 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6261 | "ARM C/C++ Compiler, RVCT" | |
6262 | }; | |
6263 | int i; | |
6264 | ||
6265 | if (producer == NULL) | |
ececd218 | 6266 | return false; |
a6c727b2 DJ |
6267 | |
6268 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6269 | if (startswith (producer, arm_idents[i])) |
ececd218 | 6270 | return true; |
a6c727b2 | 6271 | |
ececd218 | 6272 | return false; |
a6c727b2 | 6273 | } |
ed0616c6 | 6274 | |
f1e6e072 TT |
6275 | \f |
6276 | ||
6277 | /* The next index to hand out in response to a registration request. */ | |
6278 | ||
6279 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6280 | ||
6281 | /* The maximum number of "aclass" registrations we support. This is | |
6282 | constant for convenience. */ | |
6283 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6284 | ||
6285 | /* The objects representing the various "aclass" values. The elements | |
6286 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6287 | elements are those registered at gdb initialization time. */ | |
6288 | ||
6289 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6290 | ||
6291 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6292 | so that it can be const. */ | |
6293 | ||
6294 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6295 | ||
6296 | /* Make sure we saved enough room in struct symbol. */ | |
6297 | ||
6298 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6299 | ||
6300 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6301 | is the ops vector associated with this index. This returns the new | |
6302 | index, which should be used as the aclass_index field for symbols | |
6303 | of this type. */ | |
6304 | ||
6305 | int | |
6306 | register_symbol_computed_impl (enum address_class aclass, | |
6307 | const struct symbol_computed_ops *ops) | |
6308 | { | |
6309 | int result = next_aclass_value++; | |
6310 | ||
6311 | gdb_assert (aclass == LOC_COMPUTED); | |
6312 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6313 | symbol_impl[result].aclass = aclass; | |
6314 | symbol_impl[result].ops_computed = ops; | |
6315 | ||
24d6c2a0 TT |
6316 | /* Sanity check OPS. */ |
6317 | gdb_assert (ops != NULL); | |
6318 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6319 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6320 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6321 | gdb_assert (ops->read_variable != NULL); |
6322 | ||
f1e6e072 TT |
6323 | return result; |
6324 | } | |
6325 | ||
6326 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6327 | OPS is the ops vector associated with this index. This returns the | |
6328 | new index, which should be used as the aclass_index field for symbols | |
6329 | of this type. */ | |
6330 | ||
6331 | int | |
6332 | register_symbol_block_impl (enum address_class aclass, | |
6333 | const struct symbol_block_ops *ops) | |
6334 | { | |
6335 | int result = next_aclass_value++; | |
6336 | ||
6337 | gdb_assert (aclass == LOC_BLOCK); | |
6338 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6339 | symbol_impl[result].aclass = aclass; | |
6340 | symbol_impl[result].ops_block = ops; | |
6341 | ||
6342 | /* Sanity check OPS. */ | |
6343 | gdb_assert (ops != NULL); | |
6344 | gdb_assert (ops->find_frame_base_location != NULL); | |
6345 | ||
6346 | return result; | |
6347 | } | |
6348 | ||
6349 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6350 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6351 | this index. This returns the new index, which should be used as | |
6352 | the aclass_index field for symbols of this type. */ | |
6353 | ||
6354 | int | |
6355 | register_symbol_register_impl (enum address_class aclass, | |
6356 | const struct symbol_register_ops *ops) | |
6357 | { | |
6358 | int result = next_aclass_value++; | |
6359 | ||
6360 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6361 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6362 | symbol_impl[result].aclass = aclass; | |
6363 | symbol_impl[result].ops_register = ops; | |
6364 | ||
6365 | return result; | |
6366 | } | |
6367 | ||
6368 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6369 | address_class. */ | |
6370 | ||
6371 | static void | |
6372 | initialize_ordinary_address_classes (void) | |
6373 | { | |
6374 | int i; | |
6375 | ||
6376 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6377 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6378 | } |
6379 | ||
6380 | \f | |
6381 | ||
1994afbf | 6382 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ |
e623cf5d TT |
6383 | |
6384 | void | |
38bf1463 | 6385 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d | 6386 | { |
468c0cbb CB |
6387 | SYMBOL_OBJFILE_OWNED (sym) = 1; |
6388 | SYMBOL_SECTION (sym) = -1; | |
e623cf5d TT |
6389 | } |
6390 | ||
6391 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6392 | obstack. */ | |
6393 | ||
6394 | struct symbol * | |
6395 | allocate_symbol (struct objfile *objfile) | |
6396 | { | |
468c0cbb | 6397 | struct symbol *result = new (&objfile->objfile_obstack) symbol (); |
e623cf5d | 6398 | |
468c0cbb | 6399 | initialize_objfile_symbol (result); |
e623cf5d TT |
6400 | |
6401 | return result; | |
6402 | } | |
6403 | ||
6404 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6405 | obstack. */ | |
6406 | ||
6407 | struct template_symbol * | |
6408 | allocate_template_symbol (struct objfile *objfile) | |
6409 | { | |
6410 | struct template_symbol *result; | |
6411 | ||
468c0cbb CB |
6412 | result = new (&objfile->objfile_obstack) template_symbol (); |
6413 | initialize_objfile_symbol (result); | |
e623cf5d TT |
6414 | |
6415 | return result; | |
6416 | } | |
6417 | ||
08be3fe3 DE |
6418 | /* See symtab.h. */ |
6419 | ||
6420 | struct objfile * | |
6421 | symbol_objfile (const struct symbol *symbol) | |
6422 | { | |
1994afbf DE |
6423 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6424 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6425 | } |
6426 | ||
6427 | /* See symtab.h. */ | |
6428 | ||
6429 | struct gdbarch * | |
6430 | symbol_arch (const struct symbol *symbol) | |
6431 | { | |
1994afbf DE |
6432 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6433 | return symbol->owner.arch; | |
08feed99 | 6434 | return SYMTAB_OBJFILE (symbol->owner.symtab)->arch (); |
08be3fe3 DE |
6435 | } |
6436 | ||
6437 | /* See symtab.h. */ | |
6438 | ||
6439 | struct symtab * | |
6440 | symbol_symtab (const struct symbol *symbol) | |
6441 | { | |
1994afbf DE |
6442 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6443 | return symbol->owner.symtab; | |
08be3fe3 DE |
6444 | } |
6445 | ||
6446 | /* See symtab.h. */ | |
6447 | ||
6448 | void | |
6449 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6450 | { | |
1994afbf DE |
6451 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6452 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6453 | } |
6454 | ||
4b610737 TT |
6455 | /* See symtab.h. */ |
6456 | ||
6457 | CORE_ADDR | |
6458 | get_symbol_address (const struct symbol *sym) | |
6459 | { | |
6460 | gdb_assert (sym->maybe_copied); | |
6461 | gdb_assert (SYMBOL_CLASS (sym) == LOC_STATIC); | |
6462 | ||
987012b8 | 6463 | const char *linkage_name = sym->linkage_name (); |
4b610737 TT |
6464 | |
6465 | for (objfile *objfile : current_program_space->objfiles ()) | |
6466 | { | |
3e65b3e9 TT |
6467 | if (objfile->separate_debug_objfile_backlink != nullptr) |
6468 | continue; | |
6469 | ||
4b610737 TT |
6470 | bound_minimal_symbol minsym |
6471 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6472 | if (minsym.minsym != nullptr) | |
6473 | return BMSYMBOL_VALUE_ADDRESS (minsym); | |
6474 | } | |
468c0cbb | 6475 | return sym->value.address; |
4b610737 TT |
6476 | } |
6477 | ||
6478 | /* See symtab.h. */ | |
6479 | ||
6480 | CORE_ADDR | |
6481 | get_msymbol_address (struct objfile *objf, const struct minimal_symbol *minsym) | |
6482 | { | |
6483 | gdb_assert (minsym->maybe_copied); | |
6484 | gdb_assert ((objf->flags & OBJF_MAINLINE) == 0); | |
6485 | ||
c9d95fa3 | 6486 | const char *linkage_name = minsym->linkage_name (); |
4b610737 TT |
6487 | |
6488 | for (objfile *objfile : current_program_space->objfiles ()) | |
6489 | { | |
3e65b3e9 TT |
6490 | if (objfile->separate_debug_objfile_backlink == nullptr |
6491 | && (objfile->flags & OBJF_MAINLINE) != 0) | |
4b610737 TT |
6492 | { |
6493 | bound_minimal_symbol found | |
6494 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6495 | if (found.minsym != nullptr) | |
6496 | return BMSYMBOL_VALUE_ADDRESS (found); | |
6497 | } | |
6498 | } | |
6a053cb1 | 6499 | return minsym->value.address + objf->section_offsets[minsym->section]; |
4b610737 TT |
6500 | } |
6501 | ||
e623cf5d TT |
6502 | \f |
6503 | ||
165f8965 AB |
6504 | /* Hold the sub-commands of 'info module'. */ |
6505 | ||
6506 | static struct cmd_list_element *info_module_cmdlist = NULL; | |
6507 | ||
165f8965 AB |
6508 | /* See symtab.h. */ |
6509 | ||
6510 | std::vector<module_symbol_search> | |
6511 | search_module_symbols (const char *module_regexp, const char *regexp, | |
6512 | const char *type_regexp, search_domain kind) | |
6513 | { | |
6514 | std::vector<module_symbol_search> results; | |
6515 | ||
6516 | /* Search for all modules matching MODULE_REGEXP. */ | |
470c0b1c AB |
6517 | global_symbol_searcher spec1 (MODULES_DOMAIN, module_regexp); |
6518 | spec1.set_exclude_minsyms (true); | |
6519 | std::vector<symbol_search> modules = spec1.search (); | |
165f8965 AB |
6520 | |
6521 | /* Now search for all symbols of the required KIND matching the required | |
6522 | regular expressions. We figure out which ones are in which modules | |
6523 | below. */ | |
470c0b1c AB |
6524 | global_symbol_searcher spec2 (kind, regexp); |
6525 | spec2.set_symbol_type_regexp (type_regexp); | |
6526 | spec2.set_exclude_minsyms (true); | |
6527 | std::vector<symbol_search> symbols = spec2.search (); | |
165f8965 AB |
6528 | |
6529 | /* Now iterate over all MODULES, checking to see which items from | |
6530 | SYMBOLS are in each module. */ | |
6531 | for (const symbol_search &p : modules) | |
6532 | { | |
6533 | QUIT; | |
6534 | ||
6535 | /* This is a module. */ | |
6536 | gdb_assert (p.symbol != nullptr); | |
6537 | ||
987012b8 | 6538 | std::string prefix = p.symbol->print_name (); |
165f8965 AB |
6539 | prefix += "::"; |
6540 | ||
6541 | for (const symbol_search &q : symbols) | |
6542 | { | |
6543 | if (q.symbol == nullptr) | |
6544 | continue; | |
6545 | ||
987012b8 | 6546 | if (strncmp (q.symbol->print_name (), prefix.c_str (), |
165f8965 AB |
6547 | prefix.size ()) != 0) |
6548 | continue; | |
6549 | ||
6550 | results.push_back ({p, q}); | |
6551 | } | |
6552 | } | |
6553 | ||
6554 | return results; | |
6555 | } | |
6556 | ||
6557 | /* Implement the core of both 'info module functions' and 'info module | |
6558 | variables'. */ | |
6559 | ||
6560 | static void | |
6561 | info_module_subcommand (bool quiet, const char *module_regexp, | |
6562 | const char *regexp, const char *type_regexp, | |
6563 | search_domain kind) | |
6564 | { | |
6565 | /* Print a header line. Don't build the header line bit by bit as this | |
6566 | prevents internationalisation. */ | |
6567 | if (!quiet) | |
6568 | { | |
6569 | if (module_regexp == nullptr) | |
6570 | { | |
6571 | if (type_regexp == nullptr) | |
6572 | { | |
6573 | if (regexp == nullptr) | |
6574 | printf_filtered ((kind == VARIABLES_DOMAIN | |
6575 | ? _("All variables in all modules:") | |
6576 | : _("All functions in all modules:"))); | |
6577 | else | |
6578 | printf_filtered | |
6579 | ((kind == VARIABLES_DOMAIN | |
6580 | ? _("All variables matching regular expression" | |
6581 | " \"%s\" in all modules:") | |
6582 | : _("All functions matching regular expression" | |
6583 | " \"%s\" in all modules:")), | |
6584 | regexp); | |
6585 | } | |
6586 | else | |
6587 | { | |
6588 | if (regexp == nullptr) | |
6589 | printf_filtered | |
6590 | ((kind == VARIABLES_DOMAIN | |
6591 | ? _("All variables with type matching regular " | |
6592 | "expression \"%s\" in all modules:") | |
6593 | : _("All functions with type matching regular " | |
6594 | "expression \"%s\" in all modules:")), | |
6595 | type_regexp); | |
6596 | else | |
6597 | printf_filtered | |
6598 | ((kind == VARIABLES_DOMAIN | |
6599 | ? _("All variables matching regular expression " | |
6600 | "\"%s\",\n\twith type matching regular " | |
6601 | "expression \"%s\" in all modules:") | |
6602 | : _("All functions matching regular expression " | |
6603 | "\"%s\",\n\twith type matching regular " | |
6604 | "expression \"%s\" in all modules:")), | |
6605 | regexp, type_regexp); | |
6606 | } | |
6607 | } | |
6608 | else | |
6609 | { | |
6610 | if (type_regexp == nullptr) | |
6611 | { | |
6612 | if (regexp == nullptr) | |
6613 | printf_filtered | |
6614 | ((kind == VARIABLES_DOMAIN | |
6615 | ? _("All variables in all modules matching regular " | |
6616 | "expression \"%s\":") | |
6617 | : _("All functions in all modules matching regular " | |
6618 | "expression \"%s\":")), | |
6619 | module_regexp); | |
6620 | else | |
6621 | printf_filtered | |
6622 | ((kind == VARIABLES_DOMAIN | |
6623 | ? _("All variables matching regular expression " | |
6624 | "\"%s\",\n\tin all modules matching regular " | |
6625 | "expression \"%s\":") | |
6626 | : _("All functions matching regular expression " | |
6627 | "\"%s\",\n\tin all modules matching regular " | |
6628 | "expression \"%s\":")), | |
6629 | regexp, module_regexp); | |
6630 | } | |
6631 | else | |
6632 | { | |
6633 | if (regexp == nullptr) | |
6634 | printf_filtered | |
6635 | ((kind == VARIABLES_DOMAIN | |
6636 | ? _("All variables with type matching regular " | |
6637 | "expression \"%s\"\n\tin all modules matching " | |
6638 | "regular expression \"%s\":") | |
6639 | : _("All functions with type matching regular " | |
6640 | "expression \"%s\"\n\tin all modules matching " | |
6641 | "regular expression \"%s\":")), | |
6642 | type_regexp, module_regexp); | |
6643 | else | |
6644 | printf_filtered | |
6645 | ((kind == VARIABLES_DOMAIN | |
6646 | ? _("All variables matching regular expression " | |
6647 | "\"%s\",\n\twith type matching regular expression " | |
6648 | "\"%s\",\n\tin all modules matching regular " | |
6649 | "expression \"%s\":") | |
6650 | : _("All functions matching regular expression " | |
6651 | "\"%s\",\n\twith type matching regular expression " | |
6652 | "\"%s\",\n\tin all modules matching regular " | |
6653 | "expression \"%s\":")), | |
6654 | regexp, type_regexp, module_regexp); | |
6655 | } | |
6656 | } | |
6657 | printf_filtered ("\n"); | |
6658 | } | |
6659 | ||
6660 | /* Find all symbols of type KIND matching the given regular expressions | |
6661 | along with the symbols for the modules in which those symbols | |
6662 | reside. */ | |
6663 | std::vector<module_symbol_search> module_symbols | |
6664 | = search_module_symbols (module_regexp, regexp, type_regexp, kind); | |
6665 | ||
6666 | std::sort (module_symbols.begin (), module_symbols.end (), | |
6667 | [] (const module_symbol_search &a, const module_symbol_search &b) | |
6668 | { | |
6669 | if (a.first < b.first) | |
6670 | return true; | |
6671 | else if (a.first == b.first) | |
6672 | return a.second < b.second; | |
6673 | else | |
6674 | return false; | |
6675 | }); | |
6676 | ||
6677 | const char *last_filename = ""; | |
6678 | const symbol *last_module_symbol = nullptr; | |
6679 | for (const module_symbol_search &ms : module_symbols) | |
6680 | { | |
6681 | const symbol_search &p = ms.first; | |
6682 | const symbol_search &q = ms.second; | |
6683 | ||
6684 | gdb_assert (q.symbol != nullptr); | |
6685 | ||
6686 | if (last_module_symbol != p.symbol) | |
6687 | { | |
6688 | printf_filtered ("\n"); | |
987012b8 | 6689 | printf_filtered (_("Module \"%s\":\n"), p.symbol->print_name ()); |
165f8965 AB |
6690 | last_module_symbol = p.symbol; |
6691 | last_filename = ""; | |
6692 | } | |
6693 | ||
6694 | print_symbol_info (FUNCTIONS_DOMAIN, q.symbol, q.block, | |
6695 | last_filename); | |
6696 | last_filename | |
6697 | = symtab_to_filename_for_display (symbol_symtab (q.symbol)); | |
6698 | } | |
6699 | } | |
6700 | ||
6701 | /* Hold the option values for the 'info module .....' sub-commands. */ | |
6702 | ||
6703 | struct info_modules_var_func_options | |
6704 | { | |
6705 | bool quiet = false; | |
6706 | char *type_regexp = nullptr; | |
6707 | char *module_regexp = nullptr; | |
6708 | ||
6709 | ~info_modules_var_func_options () | |
6710 | { | |
6711 | xfree (type_regexp); | |
6712 | xfree (module_regexp); | |
6713 | } | |
6714 | }; | |
6715 | ||
6716 | /* The options used by 'info module variables' and 'info module functions' | |
6717 | commands. */ | |
6718 | ||
6719 | static const gdb::option::option_def info_modules_var_func_options_defs [] = { | |
6720 | gdb::option::boolean_option_def<info_modules_var_func_options> { | |
6721 | "q", | |
6722 | [] (info_modules_var_func_options *opt) { return &opt->quiet; }, | |
6723 | nullptr, /* show_cmd_cb */ | |
6724 | nullptr /* set_doc */ | |
6725 | }, | |
6726 | ||
6727 | gdb::option::string_option_def<info_modules_var_func_options> { | |
6728 | "t", | |
6729 | [] (info_modules_var_func_options *opt) { return &opt->type_regexp; }, | |
6730 | nullptr, /* show_cmd_cb */ | |
6731 | nullptr /* set_doc */ | |
6732 | }, | |
6733 | ||
6734 | gdb::option::string_option_def<info_modules_var_func_options> { | |
6735 | "m", | |
6736 | [] (info_modules_var_func_options *opt) { return &opt->module_regexp; }, | |
6737 | nullptr, /* show_cmd_cb */ | |
6738 | nullptr /* set_doc */ | |
6739 | } | |
6740 | }; | |
6741 | ||
6742 | /* Return the option group used by the 'info module ...' sub-commands. */ | |
6743 | ||
6744 | static inline gdb::option::option_def_group | |
6745 | make_info_modules_var_func_options_def_group | |
6746 | (info_modules_var_func_options *opts) | |
6747 | { | |
6748 | return {{info_modules_var_func_options_defs}, opts}; | |
6749 | } | |
6750 | ||
6751 | /* Implements the 'info module functions' command. */ | |
6752 | ||
6753 | static void | |
6754 | info_module_functions_command (const char *args, int from_tty) | |
6755 | { | |
6756 | info_modules_var_func_options opts; | |
6757 | auto grp = make_info_modules_var_func_options_def_group (&opts); | |
6758 | gdb::option::process_options | |
6759 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
6760 | if (args != nullptr && *args == '\0') | |
6761 | args = nullptr; | |
6762 | ||
6763 | info_module_subcommand (opts.quiet, opts.module_regexp, args, | |
6764 | opts.type_regexp, FUNCTIONS_DOMAIN); | |
6765 | } | |
6766 | ||
6767 | /* Implements the 'info module variables' command. */ | |
6768 | ||
6769 | static void | |
6770 | info_module_variables_command (const char *args, int from_tty) | |
6771 | { | |
6772 | info_modules_var_func_options opts; | |
6773 | auto grp = make_info_modules_var_func_options_def_group (&opts); | |
6774 | gdb::option::process_options | |
6775 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
6776 | if (args != nullptr && *args == '\0') | |
6777 | args = nullptr; | |
6778 | ||
6779 | info_module_subcommand (opts.quiet, opts.module_regexp, args, | |
6780 | opts.type_regexp, VARIABLES_DOMAIN); | |
6781 | } | |
6782 | ||
6783 | /* Command completer for 'info module ...' sub-commands. */ | |
6784 | ||
6785 | static void | |
6786 | info_module_var_func_command_completer (struct cmd_list_element *ignore, | |
6787 | completion_tracker &tracker, | |
6788 | const char *text, | |
6789 | const char * /* word */) | |
6790 | { | |
6791 | ||
6792 | const auto group = make_info_modules_var_func_options_def_group (nullptr); | |
6793 | if (gdb::option::complete_options | |
6794 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
6795 | return; | |
6796 | ||
6797 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
6798 | symbol_completer (ignore, tracker, text, word); | |
6799 | } | |
6800 | ||
6801 | \f | |
6802 | ||
6c265988 | 6803 | void _initialize_symtab (); |
c906108c | 6804 | void |
6c265988 | 6805 | _initialize_symtab () |
c906108c | 6806 | { |
60cfcb20 AB |
6807 | cmd_list_element *c; |
6808 | ||
f1e6e072 TT |
6809 | initialize_ordinary_address_classes (); |
6810 | ||
60cfcb20 AB |
6811 | c = add_info ("variables", info_variables_command, |
6812 | info_print_args_help (_("\ | |
12615cba | 6813 | All global and static variable names or those matching REGEXPs.\n\ |
4acfdd20 | 6814 | Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6815 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6816 | _("global and static variables"), |
6817 | true)); | |
095252be | 6818 | set_cmd_completer_handle_brkchars (c, info_vars_funcs_command_completer); |
c906108c | 6819 | if (dbx_commands) |
60cfcb20 AB |
6820 | { |
6821 | c = add_com ("whereis", class_info, info_variables_command, | |
6822 | info_print_args_help (_("\ | |
12615cba | 6823 | All global and static variable names, or those matching REGEXPs.\n\ |
4acfdd20 | 6824 | Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6825 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6826 | _("global and static variables"), |
6827 | true)); | |
095252be | 6828 | set_cmd_completer_handle_brkchars (c, info_vars_funcs_command_completer); |
60cfcb20 | 6829 | } |
c906108c | 6830 | |
60cfcb20 AB |
6831 | c = add_info ("functions", info_functions_command, |
6832 | info_print_args_help (_("\ | |
12615cba | 6833 | All function names or those matching REGEXPs.\n\ |
4acfdd20 | 6834 | Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6835 | Prints the functions.\n"), |
4acfdd20 AB |
6836 | _("functions"), |
6837 | true)); | |
095252be | 6838 | set_cmd_completer_handle_brkchars (c, info_vars_funcs_command_completer); |
c906108c | 6839 | |
a8eab7c6 AB |
6840 | c = add_info ("types", info_types_command, _("\ |
6841 | All type names, or those matching REGEXP.\n\ | |
6842 | Usage: info types [-q] [REGEXP]\n\ | |
6843 | Print information about all types matching REGEXP, or all types if no\n\ | |
6844 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6845 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6846 | |
28cd9371 PW |
6847 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6848 | ||
6849 | static std::string info_sources_help | |
6850 | = gdb::option::build_help (_("\ | |
6851 | All source files in the program or those matching REGEXP.\n\ | |
6852 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6853 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6854 | \n\ | |
6855 | Options:\n\ | |
6856 | %OPTIONS%"), | |
6857 | info_sources_opts); | |
6858 | ||
6859 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6860 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c | 6861 | |
59c35742 AB |
6862 | c = add_info ("modules", info_modules_command, |
6863 | _("All module names, or those matching REGEXP.")); | |
6864 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
6865 | ||
0743fc83 | 6866 | add_basic_prefix_cmd ("module", class_info, _("\ |
165f8965 | 6867 | Print information about modules."), |
0743fc83 TT |
6868 | &info_module_cmdlist, "info module ", |
6869 | 0, &infolist); | |
165f8965 AB |
6870 | |
6871 | c = add_cmd ("functions", class_info, info_module_functions_command, _("\ | |
6872 | Display functions arranged by modules.\n\ | |
6873 | Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\ | |
6874 | Print a summary of all functions within each Fortran module, grouped by\n\ | |
6875 | module and file. For each function the line on which the function is\n\ | |
6876 | defined is given along with the type signature and name of the function.\n\ | |
6877 | \n\ | |
6878 | If REGEXP is provided then only functions whose name matches REGEXP are\n\ | |
6879 | listed. If MODREGEXP is provided then only functions in modules matching\n\ | |
6880 | MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\ | |
6881 | type signature matches TYPEREGEXP are listed.\n\ | |
6882 | \n\ | |
6883 | The -q flag suppresses printing some header information."), | |
6884 | &info_module_cmdlist); | |
6885 | set_cmd_completer_handle_brkchars | |
6886 | (c, info_module_var_func_command_completer); | |
6887 | ||
6888 | c = add_cmd ("variables", class_info, info_module_variables_command, _("\ | |
6889 | Display variables arranged by modules.\n\ | |
6890 | Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\ | |
6891 | Print a summary of all variables within each Fortran module, grouped by\n\ | |
6892 | module and file. For each variable the line on which the variable is\n\ | |
6893 | defined is given along with the type and name of the variable.\n\ | |
6894 | \n\ | |
6895 | If REGEXP is provided then only variables whose name matches REGEXP are\n\ | |
6896 | listed. If MODREGEXP is provided then only variables in modules matching\n\ | |
6897 | MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\ | |
6898 | type matches TYPEREGEXP are listed.\n\ | |
6899 | \n\ | |
6900 | The -q flag suppresses printing some header information."), | |
6901 | &info_module_cmdlist); | |
6902 | set_cmd_completer_handle_brkchars | |
6903 | (c, info_module_var_func_command_completer); | |
6904 | ||
c906108c | 6905 | add_com ("rbreak", class_breakpoint, rbreak_command, |
1bedd215 | 6906 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6907 | |
717d2f5a JB |
6908 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6909 | multiple_symbols_modes, &multiple_symbols_mode, | |
6910 | _("\ | |
590042fc | 6911 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6912 | Show how the debugger handles ambiguities in expressions."), _("\ |
6913 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6914 | NULL, NULL, &setlist, &showlist); | |
6915 | ||
c011a4f4 DE |
6916 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6917 | &basenames_may_differ, _("\ | |
6918 | Set whether a source file may have multiple base names."), _("\ | |
6919 | Show whether a source file may have multiple base names."), _("\ | |
6920 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6921 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6922 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6923 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6924 | but it allows the same file be known by more than one base name.\n\ | |
6925 | If not set (the default), all source files are assumed to have just\n\ | |
6926 | one base name, and gdb will do file name comparisons more efficiently."), | |
6927 | NULL, NULL, | |
6928 | &setlist, &showlist); | |
6929 | ||
db0fec5c DE |
6930 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6931 | _("Set debugging of symbol table creation."), | |
6932 | _("Show debugging of symbol table creation."), _("\ | |
6933 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6934 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6935 | A value greater than 1 provides more verbose information."), | |
6936 | NULL, | |
6937 | NULL, | |
6938 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6939 | |
cc485e62 DE |
6940 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6941 | _("\ | |
6942 | Set debugging of symbol lookup."), _("\ | |
6943 | Show debugging of symbol lookup."), _("\ | |
6944 | When enabled (non-zero), symbol lookups are logged."), | |
6945 | NULL, NULL, | |
6946 | &setdebuglist, &showdebuglist); | |
6947 | ||
f57d2163 DE |
6948 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6949 | &new_symbol_cache_size, | |
6950 | _("Set the size of the symbol cache."), | |
6951 | _("Show the size of the symbol cache."), _("\ | |
6952 | The size of the symbol cache.\n\ | |
6953 | If zero then the symbol cache is disabled."), | |
6954 | set_symbol_cache_size_handler, NULL, | |
6955 | &maintenance_set_cmdlist, | |
6956 | &maintenance_show_cmdlist); | |
6957 | ||
6958 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6959 | _("Dump the symbol cache for each program space."), | |
6960 | &maintenanceprintlist); | |
6961 | ||
6962 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6963 | maintenance_print_symbol_cache_statistics, | |
6964 | _("Print symbol cache statistics for each program space."), | |
6965 | &maintenanceprintlist); | |
6966 | ||
6967 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6968 | maintenance_flush_symbol_cache, | |
6969 | _("Flush the symbol cache for each program space."), | |
6970 | &maintenancelist); | |
6971 | ||
76727919 TT |
6972 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6973 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6974 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6975 | } |