Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
88987551 | 30 | #include "gdb_regex.h" |
c906108c SS |
31 | #include "expression.h" |
32 | #include "language.h" | |
33 | #include "demangle.h" | |
34 | #include "inferior.h" | |
0378c332 | 35 | #include "source.h" |
a7fdf62f | 36 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 37 | #include "objc-lang.h" |
6aecb9c2 | 38 | #include "d-lang.h" |
1f8173e6 | 39 | #include "ada-lang.h" |
a766d390 | 40 | #include "go-lang.h" |
cd6c7346 | 41 | #include "p-lang.h" |
ff013f42 | 42 | #include "addrmap.h" |
529480d0 | 43 | #include "cli/cli-utils.h" |
cce0e923 | 44 | #include "fnmatch.h" |
2de7ced7 | 45 | #include "hashtab.h" |
12615cba | 46 | #include "typeprint.h" |
2de7ced7 | 47 | |
04ea0df1 | 48 | #include "gdb_obstack.h" |
fe898f56 | 49 | #include "block.h" |
de4f826b | 50 | #include "dictionary.h" |
c906108c SS |
51 | |
52 | #include <sys/types.h> | |
53 | #include <fcntl.h> | |
53ce3c39 | 54 | #include <sys/stat.h> |
c906108c | 55 | #include <ctype.h> |
015a42b4 | 56 | #include "cp-abi.h" |
71c25dea | 57 | #include "cp-support.h" |
76727919 | 58 | #include "observable.h" |
3a40aaa0 | 59 | #include "solist.h" |
9a044a89 TT |
60 | #include "macrotab.h" |
61 | #include "macroscope.h" | |
c906108c | 62 | |
270140bd | 63 | #include "parser-defs.h" |
ef0b411a | 64 | #include "completer.h" |
5ed8105e | 65 | #include "progspace-and-thread.h" |
2d7cc5c7 | 66 | #include "common/gdb_optional.h" |
bbf2f4df | 67 | #include "filename-seen-cache.h" |
46a62268 | 68 | #include "arch-utils.h" |
b9c04fb2 | 69 | #include <algorithm> |
b4987c95 | 70 | #include "common/pathstuff.h" |
ccefe4c4 | 71 | |
ff6c39cf | 72 | /* Forward declarations for local functions. */ |
c906108c | 73 | |
0b39b52e | 74 | static void rbreak_command (const char *, int); |
c906108c | 75 | |
f8eba3c6 | 76 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 77 | |
d12307c1 PMR |
78 | static struct block_symbol |
79 | lookup_symbol_aux (const char *name, | |
de63c46b | 80 | symbol_name_match_type match_type, |
d12307c1 PMR |
81 | const struct block *block, |
82 | const domain_enum domain, | |
83 | enum language language, | |
84 | struct field_of_this_result *); | |
fba7f19c | 85 | |
e4051eeb | 86 | static |
d12307c1 | 87 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 88 | symbol_name_match_type match_type, |
d12307c1 PMR |
89 | const struct block *block, |
90 | const domain_enum domain, | |
91 | enum language language); | |
8155455b | 92 | |
d12307c1 | 93 | static struct block_symbol |
fe2a438d DE |
94 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
95 | const char *name, const domain_enum domain); | |
c906108c | 96 | |
b6b80672 PA |
97 | /* See symtab.h. */ |
98 | const struct block_symbol null_block_symbol = { NULL, NULL }; | |
99 | ||
32ac0d11 TT |
100 | /* Program space key for finding name and language of "main". */ |
101 | ||
102 | static const struct program_space_data *main_progspace_key; | |
103 | ||
104 | /* Type of the data stored on the program space. */ | |
105 | ||
106 | struct main_info | |
107 | { | |
108 | /* Name of "main". */ | |
109 | ||
110 | char *name_of_main; | |
111 | ||
112 | /* Language of "main". */ | |
113 | ||
114 | enum language language_of_main; | |
115 | }; | |
116 | ||
f57d2163 DE |
117 | /* Program space key for finding its symbol cache. */ |
118 | ||
119 | static const struct program_space_data *symbol_cache_key; | |
120 | ||
121 | /* The default symbol cache size. | |
122 | There is no extra cpu cost for large N (except when flushing the cache, | |
123 | which is rare). The value here is just a first attempt. A better default | |
124 | value may be higher or lower. A prime number can make up for a bad hash | |
125 | computation, so that's why the number is what it is. */ | |
126 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
127 | ||
128 | /* The maximum symbol cache size. | |
129 | There's no method to the decision of what value to use here, other than | |
130 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
131 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
132 | ||
133 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
134 | symbol in any objfile. */ | |
d12307c1 PMR |
135 | #define SYMBOL_LOOKUP_FAILED \ |
136 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
137 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
138 | |
139 | /* Recording lookups that don't find the symbol is just as important, if not | |
140 | more so, than recording found symbols. */ | |
141 | ||
142 | enum symbol_cache_slot_state | |
143 | { | |
144 | SYMBOL_SLOT_UNUSED, | |
145 | SYMBOL_SLOT_NOT_FOUND, | |
146 | SYMBOL_SLOT_FOUND | |
147 | }; | |
148 | ||
52059ffd TT |
149 | struct symbol_cache_slot |
150 | { | |
151 | enum symbol_cache_slot_state state; | |
152 | ||
153 | /* The objfile that was current when the symbol was looked up. | |
154 | This is only needed for global blocks, but for simplicity's sake | |
155 | we allocate the space for both. If data shows the extra space used | |
156 | for static blocks is a problem, we can split things up then. | |
157 | ||
158 | Global blocks need cache lookup to include the objfile context because | |
159 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
160 | which can traverse objfiles in, effectively, any order, depending on | |
161 | the current objfile, thus affecting which symbol is found. Normally, | |
162 | only the current objfile is searched first, and then the rest are | |
163 | searched in recorded order; but putting cache lookup inside | |
164 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
165 | Instead we just make the current objfile part of the context of | |
166 | cache lookup. This means we can record the same symbol multiple times, | |
167 | each with a different "current objfile" that was in effect when the | |
168 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
169 | const struct objfile *objfile_context; | |
170 | ||
171 | union | |
172 | { | |
d12307c1 | 173 | struct block_symbol found; |
52059ffd TT |
174 | struct |
175 | { | |
176 | char *name; | |
177 | domain_enum domain; | |
178 | } not_found; | |
179 | } value; | |
180 | }; | |
181 | ||
f57d2163 DE |
182 | /* Symbols don't specify global vs static block. |
183 | So keep them in separate caches. */ | |
184 | ||
185 | struct block_symbol_cache | |
186 | { | |
187 | unsigned int hits; | |
188 | unsigned int misses; | |
189 | unsigned int collisions; | |
190 | ||
191 | /* SYMBOLS is a variable length array of this size. | |
192 | One can imagine that in general one cache (global/static) should be a | |
193 | fraction of the size of the other, but there's no data at the moment | |
194 | on which to decide. */ | |
195 | unsigned int size; | |
196 | ||
52059ffd | 197 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
198 | }; |
199 | ||
200 | /* The symbol cache. | |
201 | ||
202 | Searching for symbols in the static and global blocks over multiple objfiles | |
203 | again and again can be slow, as can searching very big objfiles. This is a | |
204 | simple cache to improve symbol lookup performance, which is critical to | |
205 | overall gdb performance. | |
206 | ||
207 | Symbols are hashed on the name, its domain, and block. | |
208 | They are also hashed on their objfile for objfile-specific lookups. */ | |
209 | ||
210 | struct symbol_cache | |
211 | { | |
212 | struct block_symbol_cache *global_symbols; | |
213 | struct block_symbol_cache *static_symbols; | |
214 | }; | |
215 | ||
45cfd468 | 216 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 217 | unsigned int symtab_create_debug = 0; |
45cfd468 | 218 | |
cc485e62 DE |
219 | /* When non-zero, print debugging messages related to symbol lookup. */ |
220 | unsigned int symbol_lookup_debug = 0; | |
221 | ||
f57d2163 DE |
222 | /* The size of the cache is staged here. */ |
223 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
224 | ||
225 | /* The current value of the symbol cache size. | |
226 | This is saved so that if the user enters a value too big we can restore | |
227 | the original value from here. */ | |
228 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
229 | ||
c011a4f4 DE |
230 | /* Non-zero if a file may be known by two different basenames. |
231 | This is the uncommon case, and significantly slows down gdb. | |
232 | Default set to "off" to not slow down the common case. */ | |
233 | int basenames_may_differ = 0; | |
234 | ||
717d2f5a JB |
235 | /* Allow the user to configure the debugger behavior with respect |
236 | to multiple-choice menus when more than one symbol matches during | |
237 | a symbol lookup. */ | |
238 | ||
7fc830e2 MK |
239 | const char multiple_symbols_ask[] = "ask"; |
240 | const char multiple_symbols_all[] = "all"; | |
241 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 242 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
243 | { |
244 | multiple_symbols_ask, | |
245 | multiple_symbols_all, | |
246 | multiple_symbols_cancel, | |
247 | NULL | |
248 | }; | |
249 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
250 | ||
251 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
252 | ||
253 | const char * | |
254 | multiple_symbols_select_mode (void) | |
255 | { | |
256 | return multiple_symbols_mode; | |
257 | } | |
258 | ||
20c681d1 DE |
259 | /* Return the name of a domain_enum. */ |
260 | ||
261 | const char * | |
262 | domain_name (domain_enum e) | |
263 | { | |
264 | switch (e) | |
265 | { | |
266 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
267 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
268 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 269 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
270 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
271 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
272 | default: gdb_assert_not_reached ("bad domain_enum"); | |
273 | } | |
274 | } | |
275 | ||
276 | /* Return the name of a search_domain . */ | |
277 | ||
278 | const char * | |
279 | search_domain_name (enum search_domain e) | |
280 | { | |
281 | switch (e) | |
282 | { | |
283 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
284 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
285 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
286 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
287 | default: gdb_assert_not_reached ("bad search_domain"); | |
288 | } | |
289 | } | |
290 | ||
43f3e411 | 291 | /* See symtab.h. */ |
db0fec5c | 292 | |
43f3e411 DE |
293 | struct symtab * |
294 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 295 | { |
43f3e411 | 296 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 297 | |
43f3e411 DE |
298 | /* The primary file symtab is the first one in the list. */ |
299 | return COMPUNIT_FILETABS (cust); | |
300 | } | |
301 | ||
302 | /* See symtab.h. */ | |
303 | ||
304 | enum language | |
305 | compunit_language (const struct compunit_symtab *cust) | |
306 | { | |
307 | struct symtab *symtab = compunit_primary_filetab (cust); | |
308 | ||
309 | /* The language of the compunit symtab is the language of its primary | |
310 | source file. */ | |
311 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
312 | } |
313 | ||
4aac40c8 TT |
314 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
315 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
316 | describes what we advertise). Returns true if they match, false |
317 | otherwise. */ | |
4aac40c8 TT |
318 | |
319 | int | |
b57a636e | 320 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
321 | { |
322 | int len = strlen (filename); | |
b57a636e | 323 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
324 | |
325 | if (len < search_len) | |
326 | return 0; | |
327 | ||
328 | /* The tail of FILENAME must match. */ | |
329 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
330 | return 0; | |
331 | ||
332 | /* Either the names must completely match, or the character | |
333 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
334 | directory separator. |
335 | ||
af529f8f JK |
336 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
337 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
338 | absolute path. The sama applies for "c:\file.c" possibly | |
339 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
340 | ||
d84fca2c JK |
341 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
342 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
343 | to put the "c:file.c" name into debug info. Such compatibility | |
344 | works only on GDB built for DOS host. */ | |
4aac40c8 | 345 | return (len == search_len |
af529f8f JK |
346 | || (!IS_ABSOLUTE_PATH (search_name) |
347 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
348 | || (HAS_DRIVE_SPEC (filename) |
349 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
350 | } | |
351 | ||
cce0e923 DE |
352 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
353 | Heads up on the order of the arguments. They match the order of | |
354 | compare_filenames_for_search, but it's the opposite of the order of | |
355 | arguments to gdb_filename_fnmatch. */ | |
356 | ||
357 | int | |
358 | compare_glob_filenames_for_search (const char *filename, | |
359 | const char *search_name) | |
360 | { | |
361 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
362 | all /s have to be explicitly specified. */ | |
363 | int file_path_elements = count_path_elements (filename); | |
364 | int search_path_elements = count_path_elements (search_name); | |
365 | ||
366 | if (search_path_elements > file_path_elements) | |
367 | return 0; | |
368 | ||
369 | if (IS_ABSOLUTE_PATH (search_name)) | |
370 | { | |
371 | return (search_path_elements == file_path_elements | |
372 | && gdb_filename_fnmatch (search_name, filename, | |
373 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
374 | } | |
375 | ||
376 | { | |
377 | const char *file_to_compare | |
378 | = strip_leading_path_elements (filename, | |
379 | file_path_elements - search_path_elements); | |
380 | ||
381 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
382 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
383 | } | |
384 | } | |
385 | ||
f8eba3c6 TT |
386 | /* Check for a symtab of a specific name by searching some symtabs. |
387 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 388 | |
b2d23133 DE |
389 | If NAME is not absolute, then REAL_PATH is NULL |
390 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
391 | ||
14bc53a8 PA |
392 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
393 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 394 | |
43f3e411 DE |
395 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
396 | Each symtab within the specified compunit symtab is also searched. | |
397 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
398 | search until the end of the list. */ |
399 | ||
14bc53a8 | 400 | bool |
f8eba3c6 | 401 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 402 | const char *real_path, |
43f3e411 | 403 | struct compunit_symtab *first, |
14bc53a8 PA |
404 | struct compunit_symtab *after_last, |
405 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 406 | { |
43f3e411 | 407 | struct compunit_symtab *cust; |
c011a4f4 | 408 | const char* base_name = lbasename (name); |
1f84b619 | 409 | |
43f3e411 | 410 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 411 | { |
5accd1a0 | 412 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 413 | { |
43f3e411 DE |
414 | if (compare_filenames_for_search (s->filename, name)) |
415 | { | |
14bc53a8 PA |
416 | if (callback (s)) |
417 | return true; | |
43f3e411 DE |
418 | continue; |
419 | } | |
a94e8645 | 420 | |
43f3e411 DE |
421 | /* Before we invoke realpath, which can get expensive when many |
422 | files are involved, do a quick comparison of the basenames. */ | |
423 | if (! basenames_may_differ | |
424 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
425 | continue; | |
a94e8645 | 426 | |
43f3e411 | 427 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 428 | { |
14bc53a8 PA |
429 | if (callback (s)) |
430 | return true; | |
a94e8645 DE |
431 | continue; |
432 | } | |
43f3e411 DE |
433 | |
434 | /* If the user gave us an absolute path, try to find the file in | |
435 | this symtab and use its absolute path. */ | |
436 | if (real_path != NULL) | |
437 | { | |
438 | const char *fullname = symtab_to_fullname (s); | |
439 | ||
440 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
441 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
442 | if (FILENAME_CMP (real_path, fullname) == 0) | |
443 | { | |
14bc53a8 PA |
444 | if (callback (s)) |
445 | return true; | |
43f3e411 DE |
446 | continue; |
447 | } | |
448 | } | |
a94e8645 | 449 | } |
f8eba3c6 | 450 | } |
58d370e0 | 451 | |
14bc53a8 | 452 | return false; |
f8eba3c6 TT |
453 | } |
454 | ||
455 | /* Check for a symtab of a specific name; first in symtabs, then in | |
456 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
457 | in the symtab filename will also work. | |
458 | ||
14bc53a8 PA |
459 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
460 | true, the search stops. */ | |
f8eba3c6 TT |
461 | |
462 | void | |
463 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 464 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 465 | { |
14bc53a8 | 466 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
467 | |
468 | /* Here we are interested in canonicalizing an absolute path, not | |
469 | absolutizing a relative path. */ | |
470 | if (IS_ABSOLUTE_PATH (name)) | |
471 | { | |
14278e1f | 472 | real_path = gdb_realpath (name); |
14bc53a8 | 473 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
474 | } |
475 | ||
2030c079 | 476 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
477 | { |
478 | if (iterate_over_some_symtabs (name, real_path.get (), | |
479 | objfile->compunit_symtabs, NULL, | |
480 | callback)) | |
f8eba3c6 | 481 | return; |
14bc53a8 | 482 | } |
f8eba3c6 | 483 | |
c906108c SS |
484 | /* Same search rules as above apply here, but now we look thru the |
485 | psymtabs. */ | |
486 | ||
2030c079 | 487 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
488 | { |
489 | if (objfile->sf | |
490 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
491 | name, | |
492 | real_path.get (), | |
493 | callback)) | |
f8eba3c6 | 494 | return; |
14bc53a8 | 495 | } |
c906108c | 496 | } |
f8eba3c6 TT |
497 | |
498 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
499 | symtab, or NULL. */ | |
500 | ||
501 | struct symtab * | |
502 | lookup_symtab (const char *name) | |
503 | { | |
504 | struct symtab *result = NULL; | |
505 | ||
14bc53a8 PA |
506 | iterate_over_symtabs (name, [&] (symtab *symtab) |
507 | { | |
508 | result = symtab; | |
509 | return true; | |
510 | }); | |
511 | ||
f8eba3c6 TT |
512 | return result; |
513 | } | |
514 | ||
c906108c SS |
515 | \f |
516 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
517 | full method name, which consist of the class name (from T), the unadorned | |
518 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 519 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
520 | |
521 | char * | |
fba45db2 | 522 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
523 | { |
524 | int mangled_name_len; | |
525 | char *mangled_name; | |
526 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
527 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 528 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 529 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 530 | const char *newname = TYPE_NAME (type); |
c906108c SS |
531 | |
532 | /* Does the form of physname indicate that it is the full mangled name | |
533 | of a constructor (not just the args)? */ | |
534 | int is_full_physname_constructor; | |
535 | ||
536 | int is_constructor; | |
015a42b4 | 537 | int is_destructor = is_destructor_name (physname); |
c906108c | 538 | /* Need a new type prefix. */ |
e6a959d6 PA |
539 | const char *const_prefix = method->is_const ? "C" : ""; |
540 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
541 | char buf[20]; |
542 | int len = (newname == NULL ? 0 : strlen (newname)); | |
543 | ||
43630227 PS |
544 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
545 | or an operator name. */ | |
546 | if ((physname[0] == '_' && physname[1] == 'Z') | |
547 | || is_operator_name (field_name)) | |
235d1e03 EZ |
548 | return xstrdup (physname); |
549 | ||
015a42b4 | 550 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 551 | |
3e43a32a MS |
552 | is_constructor = is_full_physname_constructor |
553 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
554 | |
555 | if (!is_destructor) | |
61012eef | 556 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
557 | |
558 | if (is_destructor || is_full_physname_constructor) | |
559 | { | |
c5aa993b JM |
560 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
561 | strcpy (mangled_name, physname); | |
c906108c SS |
562 | return mangled_name; |
563 | } | |
564 | ||
565 | if (len == 0) | |
566 | { | |
8c042590 | 567 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
568 | } |
569 | else if (physname[0] == 't' || physname[0] == 'Q') | |
570 | { | |
571 | /* The physname for template and qualified methods already includes | |
c5aa993b | 572 | the class name. */ |
8c042590 | 573 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
574 | newname = NULL; |
575 | len = 0; | |
576 | } | |
577 | else | |
578 | { | |
8c042590 PM |
579 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
580 | volatile_prefix, len); | |
c906108c SS |
581 | } |
582 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 583 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 584 | |
433759f7 MS |
585 | mangled_name = (char *) xmalloc (mangled_name_len); |
586 | if (is_constructor) | |
587 | mangled_name[0] = '\0'; | |
588 | else | |
589 | strcpy (mangled_name, field_name); | |
590 | ||
c906108c SS |
591 | strcat (mangled_name, buf); |
592 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
593 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 594 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
595 | if (newname != NULL) |
596 | strcat (mangled_name, newname); | |
597 | ||
598 | strcat (mangled_name, physname); | |
599 | return (mangled_name); | |
600 | } | |
12af6855 | 601 | |
b250c185 | 602 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 603 | correctly allocated. */ |
eca864fe | 604 | |
b250c185 SW |
605 | void |
606 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 607 | const char *name, |
ccde22c0 | 608 | struct obstack *obstack) |
b250c185 | 609 | { |
7c5fdd25 | 610 | if (gsymbol->language == language_ada) |
f85f34ed TT |
611 | { |
612 | if (name == NULL) | |
613 | { | |
614 | gsymbol->ada_mangled = 0; | |
615 | gsymbol->language_specific.obstack = obstack; | |
616 | } | |
617 | else | |
618 | { | |
619 | gsymbol->ada_mangled = 1; | |
615b3f62 | 620 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
621 | } |
622 | } | |
29df156d | 623 | else |
615b3f62 | 624 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
625 | } |
626 | ||
627 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 628 | |
0d5cff50 | 629 | const char * |
b250c185 SW |
630 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
631 | { | |
7c5fdd25 | 632 | if (gsymbol->language == language_ada) |
f85f34ed TT |
633 | { |
634 | if (!gsymbol->ada_mangled) | |
635 | return NULL; | |
636 | /* Fall through. */ | |
637 | } | |
638 | ||
615b3f62 | 639 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
640 | } |
641 | ||
12af6855 | 642 | \f |
89aad1f9 | 643 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 644 | depending upon the language for the symbol. */ |
eca864fe | 645 | |
89aad1f9 | 646 | void |
33e5013e | 647 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
648 | enum language language, |
649 | struct obstack *obstack) | |
89aad1f9 EZ |
650 | { |
651 | gsymbol->language = language; | |
7c5fdd25 DE |
652 | if (gsymbol->language == language_cplus |
653 | || gsymbol->language == language_d | |
a766d390 | 654 | || gsymbol->language == language_go |
f55ee35c JK |
655 | || gsymbol->language == language_objc |
656 | || gsymbol->language == language_fortran) | |
89aad1f9 | 657 | { |
f85f34ed TT |
658 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
659 | } | |
660 | else if (gsymbol->language == language_ada) | |
661 | { | |
662 | gdb_assert (gsymbol->ada_mangled == 0); | |
663 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 664 | } |
89aad1f9 EZ |
665 | else |
666 | { | |
667 | memset (&gsymbol->language_specific, 0, | |
668 | sizeof (gsymbol->language_specific)); | |
669 | } | |
670 | } | |
671 | ||
2de7ced7 DJ |
672 | /* Functions to initialize a symbol's mangled name. */ |
673 | ||
04a679b8 TT |
674 | /* Objects of this type are stored in the demangled name hash table. */ |
675 | struct demangled_name_entry | |
676 | { | |
9d2ceabe | 677 | const char *mangled; |
04a679b8 TT |
678 | char demangled[1]; |
679 | }; | |
680 | ||
681 | /* Hash function for the demangled name hash. */ | |
eca864fe | 682 | |
04a679b8 TT |
683 | static hashval_t |
684 | hash_demangled_name_entry (const void *data) | |
685 | { | |
19ba03f4 SM |
686 | const struct demangled_name_entry *e |
687 | = (const struct demangled_name_entry *) data; | |
433759f7 | 688 | |
04a679b8 TT |
689 | return htab_hash_string (e->mangled); |
690 | } | |
691 | ||
692 | /* Equality function for the demangled name hash. */ | |
eca864fe | 693 | |
04a679b8 TT |
694 | static int |
695 | eq_demangled_name_entry (const void *a, const void *b) | |
696 | { | |
19ba03f4 SM |
697 | const struct demangled_name_entry *da |
698 | = (const struct demangled_name_entry *) a; | |
699 | const struct demangled_name_entry *db | |
700 | = (const struct demangled_name_entry *) b; | |
433759f7 | 701 | |
04a679b8 TT |
702 | return strcmp (da->mangled, db->mangled) == 0; |
703 | } | |
704 | ||
2de7ced7 DJ |
705 | /* Create the hash table used for demangled names. Each hash entry is |
706 | a pair of strings; one for the mangled name and one for the demangled | |
707 | name. The entry is hashed via just the mangled name. */ | |
708 | ||
709 | static void | |
0f14768a | 710 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
711 | { |
712 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 713 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
714 | Choosing a much larger table size wastes memory, and saves only about |
715 | 1% in symbol reading. */ | |
716 | ||
0f14768a | 717 | per_bfd->demangled_names_hash = htab_create_alloc |
04a679b8 | 718 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 719 | NULL, xcalloc, xfree); |
2de7ced7 | 720 | } |
12af6855 | 721 | |
2de7ced7 | 722 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
723 | language of that symbol. If the language is set to language_auto, |
724 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
725 | then set the language appropriately. The returned name is allocated |
726 | by the demangler and should be xfree'd. */ | |
12af6855 | 727 | |
2de7ced7 DJ |
728 | static char * |
729 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
730 | const char *mangled) | |
12af6855 | 731 | { |
12af6855 | 732 | char *demangled = NULL; |
8b302db8 | 733 | int i; |
12af6855 JB |
734 | |
735 | if (gsymbol->language == language_unknown) | |
736 | gsymbol->language = language_auto; | |
1bae87b9 | 737 | |
8b302db8 | 738 | if (gsymbol->language != language_auto) |
1bae87b9 | 739 | { |
8b302db8 TT |
740 | const struct language_defn *lang = language_def (gsymbol->language); |
741 | ||
742 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
743 | return demangled; | |
6aecb9c2 | 744 | } |
8b302db8 TT |
745 | |
746 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 747 | { |
8b302db8 TT |
748 | enum language l = (enum language) i; |
749 | const struct language_defn *lang = language_def (l); | |
750 | ||
751 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 752 | { |
8b302db8 | 753 | gsymbol->language = l; |
a766d390 DE |
754 | return demangled; |
755 | } | |
756 | } | |
757 | ||
2de7ced7 DJ |
758 | return NULL; |
759 | } | |
760 | ||
980cae7a | 761 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
762 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
763 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
764 | NUL-terminated, then this function assumes that NAME is already | |
765 | correctly saved (either permanently or with a lifetime tied to the | |
766 | objfile), and it will not be copied. | |
767 | ||
768 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 769 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 770 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
771 | |
772 | void | |
773 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 | 774 | const char *linkage_name, int len, int copy_name, |
1d94a5a3 | 775 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 776 | { |
04a679b8 | 777 | struct demangled_name_entry **slot; |
980cae7a DC |
778 | /* A 0-terminated copy of the linkage name. */ |
779 | const char *linkage_name_copy; | |
04a679b8 | 780 | struct demangled_name_entry entry; |
2de7ced7 | 781 | |
b06ead72 JB |
782 | if (gsymbol->language == language_ada) |
783 | { | |
784 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 785 | we can save some space by not storing the demangled name. */ |
04a679b8 | 786 | if (!copy_name) |
0d5cff50 | 787 | gsymbol->name = linkage_name; |
04a679b8 TT |
788 | else |
789 | { | |
224c3ddb SM |
790 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
791 | len + 1); | |
0d5cff50 DE |
792 | |
793 | memcpy (name, linkage_name, len); | |
794 | name[len] = '\0'; | |
795 | gsymbol->name = name; | |
04a679b8 | 796 | } |
84a1243b | 797 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
798 | |
799 | return; | |
800 | } | |
801 | ||
84a1243b | 802 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 803 | create_demangled_names_hash (per_bfd); |
04a679b8 | 804 | |
9c37b5ae | 805 | if (linkage_name[len] != '\0') |
2de7ced7 | 806 | { |
980cae7a DC |
807 | char *alloc_name; |
808 | ||
9c37b5ae | 809 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 810 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 811 | alloc_name[len] = '\0'; |
980cae7a DC |
812 | |
813 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
814 | } |
815 | else | |
9c37b5ae | 816 | linkage_name_copy = linkage_name; |
2de7ced7 | 817 | |
9325300d TV |
818 | /* Set the symbol language. */ |
819 | char *demangled_name_ptr | |
820 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
821 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
822 | ||
9c37b5ae | 823 | entry.mangled = linkage_name_copy; |
04a679b8 | 824 | slot = ((struct demangled_name_entry **) |
84a1243b | 825 | htab_find_slot (per_bfd->demangled_names_hash, |
04a679b8 | 826 | &entry, INSERT)); |
2de7ced7 DJ |
827 | |
828 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
829 | if (*slot == NULL |
830 | /* A C version of the symbol may have already snuck into the table. | |
831 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
832 | || (gsymbol->language == language_go | |
833 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 834 | { |
9325300d | 835 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 836 | |
04a679b8 | 837 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 838 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
839 | mangled name saved, and we don't have a demangled name. So, |
840 | you might think we could save a little space by not recording | |
841 | this in the hash table at all. | |
842 | ||
843 | It turns out that it is actually important to still save such | |
844 | an entry in the hash table, because storing this name gives | |
705b5767 | 845 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 846 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 847 | { |
224c3ddb SM |
848 | *slot |
849 | = ((struct demangled_name_entry *) | |
850 | obstack_alloc (&per_bfd->storage_obstack, | |
851 | offsetof (struct demangled_name_entry, demangled) | |
852 | + demangled_len + 1)); | |
9c37b5ae | 853 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
854 | } |
855 | else | |
856 | { | |
9d2ceabe TT |
857 | char *mangled_ptr; |
858 | ||
04a679b8 TT |
859 | /* If we must copy the mangled name, put it directly after |
860 | the demangled name so we can have a single | |
861 | allocation. */ | |
224c3ddb SM |
862 | *slot |
863 | = ((struct demangled_name_entry *) | |
864 | obstack_alloc (&per_bfd->storage_obstack, | |
865 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 866 | + len + demangled_len + 2)); |
9d2ceabe | 867 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 868 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 869 | (*slot)->mangled = mangled_ptr; |
04a679b8 TT |
870 | } |
871 | ||
980cae7a | 872 | if (demangled_name != NULL) |
9325300d | 873 | strcpy ((*slot)->demangled, demangled_name.get()); |
2de7ced7 | 874 | else |
04a679b8 | 875 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
876 | } |
877 | ||
9c37b5ae | 878 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 879 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 880 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 881 | &per_bfd->storage_obstack); |
2de7ced7 | 882 | else |
84a1243b | 883 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
884 | } |
885 | ||
22abf04a DC |
886 | /* Return the source code name of a symbol. In languages where |
887 | demangling is necessary, this is the demangled name. */ | |
888 | ||
0d5cff50 | 889 | const char * |
22abf04a DC |
890 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
891 | { | |
9af17804 | 892 | switch (gsymbol->language) |
22abf04a | 893 | { |
1f8173e6 | 894 | case language_cplus: |
6aecb9c2 | 895 | case language_d: |
a766d390 | 896 | case language_go: |
1f8173e6 | 897 | case language_objc: |
f55ee35c | 898 | case language_fortran: |
b250c185 SW |
899 | if (symbol_get_demangled_name (gsymbol) != NULL) |
900 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
901 | break; |
902 | case language_ada: | |
f85f34ed | 903 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
904 | default: |
905 | break; | |
22abf04a | 906 | } |
1f8173e6 | 907 | return gsymbol->name; |
22abf04a DC |
908 | } |
909 | ||
9cc0d196 | 910 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 911 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 912 | |
0d5cff50 | 913 | const char * |
df8a16a1 | 914 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 915 | { |
c6e5ee5e SDJ |
916 | const char *dem_name = NULL; |
917 | ||
9af17804 | 918 | switch (gsymbol->language) |
1f8173e6 PH |
919 | { |
920 | case language_cplus: | |
6aecb9c2 | 921 | case language_d: |
a766d390 | 922 | case language_go: |
1f8173e6 | 923 | case language_objc: |
f55ee35c | 924 | case language_fortran: |
c6e5ee5e | 925 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
926 | break; |
927 | case language_ada: | |
f85f34ed | 928 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
929 | break; |
930 | default: | |
931 | break; | |
932 | } | |
c6e5ee5e | 933 | return dem_name; |
9cc0d196 | 934 | } |
fe39c653 | 935 | |
4725b721 PH |
936 | /* Return the search name of a symbol---generally the demangled or |
937 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 938 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 939 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 940 | |
0d5cff50 | 941 | const char * |
fc062ac6 JB |
942 | symbol_search_name (const struct general_symbol_info *gsymbol) |
943 | { | |
1f8173e6 PH |
944 | if (gsymbol->language == language_ada) |
945 | return gsymbol->name; | |
946 | else | |
947 | return symbol_natural_name (gsymbol); | |
4725b721 | 948 | } |
b5ec771e PA |
949 | |
950 | /* See symtab.h. */ | |
951 | ||
952 | bool | |
953 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
954 | const lookup_name_info &name) | |
955 | { | |
956 | symbol_name_matcher_ftype *name_match | |
618daa93 | 957 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
958 | return name_match (symbol_search_name (gsymbol), name, NULL); |
959 | } | |
960 | ||
c906108c SS |
961 | \f |
962 | ||
94277a38 DJ |
963 | /* Return 1 if the two sections are the same, or if they could |
964 | plausibly be copies of each other, one in an original object | |
965 | file and another in a separated debug file. */ | |
966 | ||
967 | int | |
714835d5 UW |
968 | matching_obj_sections (struct obj_section *obj_first, |
969 | struct obj_section *obj_second) | |
94277a38 | 970 | { |
714835d5 UW |
971 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
972 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
973 | |
974 | /* If they're the same section, then they match. */ | |
975 | if (first == second) | |
976 | return 1; | |
977 | ||
978 | /* If either is NULL, give up. */ | |
979 | if (first == NULL || second == NULL) | |
980 | return 0; | |
981 | ||
982 | /* This doesn't apply to absolute symbols. */ | |
983 | if (first->owner == NULL || second->owner == NULL) | |
984 | return 0; | |
985 | ||
986 | /* If they're in the same object file, they must be different sections. */ | |
987 | if (first->owner == second->owner) | |
988 | return 0; | |
989 | ||
990 | /* Check whether the two sections are potentially corresponding. They must | |
991 | have the same size, address, and name. We can't compare section indexes, | |
992 | which would be more reliable, because some sections may have been | |
993 | stripped. */ | |
994 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
995 | return 0; | |
996 | ||
818f79f6 | 997 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 998 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
999 | - bfd_get_start_address (first->owner) |
1000 | != bfd_get_section_vma (second->owner, second) | |
1001 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1002 | return 0; |
1003 | ||
1004 | if (bfd_get_section_name (first->owner, first) == NULL | |
1005 | || bfd_get_section_name (second->owner, second) == NULL | |
1006 | || strcmp (bfd_get_section_name (first->owner, first), | |
1007 | bfd_get_section_name (second->owner, second)) != 0) | |
1008 | return 0; | |
1009 | ||
1010 | /* Otherwise check that they are in corresponding objfiles. */ | |
1011 | ||
9d7c67bf | 1012 | struct objfile *obj = NULL; |
2030c079 | 1013 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1014 | if (objfile->obfd == first->owner) |
1015 | { | |
1016 | obj = objfile; | |
1017 | break; | |
1018 | } | |
94277a38 DJ |
1019 | gdb_assert (obj != NULL); |
1020 | ||
1021 | if (obj->separate_debug_objfile != NULL | |
1022 | && obj->separate_debug_objfile->obfd == second->owner) | |
1023 | return 1; | |
1024 | if (obj->separate_debug_objfile_backlink != NULL | |
1025 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1026 | return 1; | |
1027 | ||
1028 | return 0; | |
1029 | } | |
c5aa993b | 1030 | |
2097ae25 DE |
1031 | /* See symtab.h. */ |
1032 | ||
1033 | void | |
1034 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1035 | { |
77e371c0 | 1036 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1037 | |
1038 | /* If we know that this is not a text address, return failure. This is | |
1039 | necessary because we loop based on texthigh and textlow, which do | |
1040 | not include the data ranges. */ | |
77e371c0 TT |
1041 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1042 | if (msymbol.minsym | |
1043 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
1044 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
1045 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
1046 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
1047 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
2097ae25 | 1048 | return; |
c906108c | 1049 | |
2030c079 | 1050 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1051 | { |
1052 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1053 | |
aed57c53 TT |
1054 | if (objfile->sf) |
1055 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1056 | pc, section, 0); | |
1057 | if (cust) | |
1058 | return; | |
1059 | } | |
c906108c | 1060 | } |
c906108c | 1061 | \f |
f57d2163 DE |
1062 | /* Hash function for the symbol cache. */ |
1063 | ||
1064 | static unsigned int | |
1065 | hash_symbol_entry (const struct objfile *objfile_context, | |
1066 | const char *name, domain_enum domain) | |
1067 | { | |
1068 | unsigned int hash = (uintptr_t) objfile_context; | |
1069 | ||
1070 | if (name != NULL) | |
1071 | hash += htab_hash_string (name); | |
1072 | ||
2c26b84f DE |
1073 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1074 | to map to the same slot. */ | |
1075 | if (domain == STRUCT_DOMAIN) | |
1076 | hash += VAR_DOMAIN * 7; | |
1077 | else | |
1078 | hash += domain * 7; | |
f57d2163 DE |
1079 | |
1080 | return hash; | |
1081 | } | |
1082 | ||
1083 | /* Equality function for the symbol cache. */ | |
1084 | ||
1085 | static int | |
1086 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1087 | const struct objfile *objfile_context, | |
1088 | const char *name, domain_enum domain) | |
1089 | { | |
1090 | const char *slot_name; | |
1091 | domain_enum slot_domain; | |
1092 | ||
1093 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1094 | return 0; | |
1095 | ||
1096 | if (slot->objfile_context != objfile_context) | |
1097 | return 0; | |
1098 | ||
1099 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1100 | { | |
1101 | slot_name = slot->value.not_found.name; | |
1102 | slot_domain = slot->value.not_found.domain; | |
1103 | } | |
1104 | else | |
1105 | { | |
d12307c1 PMR |
1106 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1107 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1108 | } |
1109 | ||
1110 | /* NULL names match. */ | |
1111 | if (slot_name == NULL && name == NULL) | |
1112 | { | |
1113 | /* But there's no point in calling symbol_matches_domain in the | |
1114 | SYMBOL_SLOT_FOUND case. */ | |
1115 | if (slot_domain != domain) | |
1116 | return 0; | |
1117 | } | |
1118 | else if (slot_name != NULL && name != NULL) | |
1119 | { | |
b5ec771e PA |
1120 | /* It's important that we use the same comparison that was done |
1121 | the first time through. If the slot records a found symbol, | |
1122 | then this means using the symbol name comparison function of | |
1123 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1124 | dictionary.c. It also means using symbol_matches_domain for | |
1125 | found symbols. See block.c. | |
f57d2163 DE |
1126 | |
1127 | If the slot records a not-found symbol, then require a precise match. | |
1128 | We could still be lax with whitespace like strcmp_iw though. */ | |
1129 | ||
1130 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1131 | { | |
1132 | if (strcmp (slot_name, name) != 0) | |
1133 | return 0; | |
1134 | if (slot_domain != domain) | |
1135 | return 0; | |
1136 | } | |
1137 | else | |
1138 | { | |
d12307c1 | 1139 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1140 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1141 | |
b5ec771e | 1142 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1143 | return 0; |
b5ec771e | 1144 | |
f57d2163 DE |
1145 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1146 | slot_domain, domain)) | |
1147 | return 0; | |
1148 | } | |
1149 | } | |
1150 | else | |
1151 | { | |
1152 | /* Only one name is NULL. */ | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | return 1; | |
1157 | } | |
1158 | ||
1159 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1160 | length array) in bytes. */ | |
1161 | ||
1162 | static size_t | |
1163 | symbol_cache_byte_size (unsigned int size) | |
1164 | { | |
1165 | return (sizeof (struct block_symbol_cache) | |
1166 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1167 | } | |
1168 | ||
1169 | /* Resize CACHE. */ | |
1170 | ||
1171 | static void | |
1172 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1173 | { | |
1174 | /* If there's no change in size, don't do anything. | |
1175 | All caches have the same size, so we can just compare with the size | |
1176 | of the global symbols cache. */ | |
1177 | if ((cache->global_symbols != NULL | |
1178 | && cache->global_symbols->size == new_size) | |
1179 | || (cache->global_symbols == NULL | |
1180 | && new_size == 0)) | |
1181 | return; | |
1182 | ||
1183 | xfree (cache->global_symbols); | |
1184 | xfree (cache->static_symbols); | |
1185 | ||
1186 | if (new_size == 0) | |
1187 | { | |
1188 | cache->global_symbols = NULL; | |
1189 | cache->static_symbols = NULL; | |
1190 | } | |
1191 | else | |
1192 | { | |
1193 | size_t total_size = symbol_cache_byte_size (new_size); | |
1194 | ||
224c3ddb SM |
1195 | cache->global_symbols |
1196 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1197 | cache->static_symbols | |
1198 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1199 | cache->global_symbols->size = new_size; |
1200 | cache->static_symbols->size = new_size; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | /* Make a symbol cache of size SIZE. */ | |
1205 | ||
1206 | static struct symbol_cache * | |
1207 | make_symbol_cache (unsigned int size) | |
1208 | { | |
1209 | struct symbol_cache *cache; | |
1210 | ||
1211 | cache = XCNEW (struct symbol_cache); | |
1212 | resize_symbol_cache (cache, symbol_cache_size); | |
1213 | return cache; | |
1214 | } | |
1215 | ||
1216 | /* Free the space used by CACHE. */ | |
1217 | ||
1218 | static void | |
1219 | free_symbol_cache (struct symbol_cache *cache) | |
1220 | { | |
1221 | xfree (cache->global_symbols); | |
1222 | xfree (cache->static_symbols); | |
1223 | xfree (cache); | |
1224 | } | |
1225 | ||
1226 | /* Return the symbol cache of PSPACE. | |
1227 | Create one if it doesn't exist yet. */ | |
1228 | ||
1229 | static struct symbol_cache * | |
1230 | get_symbol_cache (struct program_space *pspace) | |
1231 | { | |
19ba03f4 SM |
1232 | struct symbol_cache *cache |
1233 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1234 | |
1235 | if (cache == NULL) | |
1236 | { | |
1237 | cache = make_symbol_cache (symbol_cache_size); | |
1238 | set_program_space_data (pspace, symbol_cache_key, cache); | |
1239 | } | |
1240 | ||
1241 | return cache; | |
1242 | } | |
1243 | ||
1244 | /* Delete the symbol cache of PSPACE. | |
1245 | Called when PSPACE is destroyed. */ | |
1246 | ||
1247 | static void | |
1248 | symbol_cache_cleanup (struct program_space *pspace, void *data) | |
1249 | { | |
19ba03f4 | 1250 | struct symbol_cache *cache = (struct symbol_cache *) data; |
f57d2163 DE |
1251 | |
1252 | free_symbol_cache (cache); | |
1253 | } | |
1254 | ||
1255 | /* Set the size of the symbol cache in all program spaces. */ | |
1256 | ||
1257 | static void | |
1258 | set_symbol_cache_size (unsigned int new_size) | |
1259 | { | |
1260 | struct program_space *pspace; | |
1261 | ||
1262 | ALL_PSPACES (pspace) | |
1263 | { | |
1264 | struct symbol_cache *cache | |
19ba03f4 | 1265 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); |
f57d2163 DE |
1266 | |
1267 | /* The pspace could have been created but not have a cache yet. */ | |
1268 | if (cache != NULL) | |
1269 | resize_symbol_cache (cache, new_size); | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | /* Called when symbol-cache-size is set. */ | |
1274 | ||
1275 | static void | |
eb4c3f4a | 1276 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1277 | struct cmd_list_element *c) |
1278 | { | |
1279 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1280 | { | |
1281 | /* Restore the previous value. | |
1282 | This is the value the "show" command prints. */ | |
1283 | new_symbol_cache_size = symbol_cache_size; | |
1284 | ||
1285 | error (_("Symbol cache size is too large, max is %u."), | |
1286 | MAX_SYMBOL_CACHE_SIZE); | |
1287 | } | |
1288 | symbol_cache_size = new_symbol_cache_size; | |
1289 | ||
1290 | set_symbol_cache_size (symbol_cache_size); | |
1291 | } | |
1292 | ||
1293 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1294 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1295 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1296 | failed (and thus this one will too), or NULL if the symbol is not present | |
1297 | in the cache. | |
2c26b84f DE |
1298 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1299 | set to the cache and slot of the symbol to save the result of a full lookup | |
1300 | attempt. */ | |
f57d2163 | 1301 | |
d12307c1 | 1302 | static struct block_symbol |
f57d2163 DE |
1303 | symbol_cache_lookup (struct symbol_cache *cache, |
1304 | struct objfile *objfile_context, int block, | |
1305 | const char *name, domain_enum domain, | |
1306 | struct block_symbol_cache **bsc_ptr, | |
1307 | struct symbol_cache_slot **slot_ptr) | |
1308 | { | |
1309 | struct block_symbol_cache *bsc; | |
1310 | unsigned int hash; | |
1311 | struct symbol_cache_slot *slot; | |
1312 | ||
1313 | if (block == GLOBAL_BLOCK) | |
1314 | bsc = cache->global_symbols; | |
1315 | else | |
1316 | bsc = cache->static_symbols; | |
1317 | if (bsc == NULL) | |
1318 | { | |
1319 | *bsc_ptr = NULL; | |
1320 | *slot_ptr = NULL; | |
d12307c1 | 1321 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1322 | } |
1323 | ||
1324 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1325 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1326 | |
1327 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1328 | { | |
1329 | if (symbol_lookup_debug) | |
1330 | fprintf_unfiltered (gdb_stdlog, | |
1331 | "%s block symbol cache hit%s for %s, %s\n", | |
1332 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1333 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1334 | ? " (not found)" : "", | |
1335 | name, domain_name (domain)); | |
1336 | ++bsc->hits; | |
1337 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1338 | return SYMBOL_LOOKUP_FAILED; | |
1339 | return slot->value.found; | |
1340 | } | |
1341 | ||
2c26b84f DE |
1342 | /* Symbol is not present in the cache. */ |
1343 | ||
1344 | *bsc_ptr = bsc; | |
1345 | *slot_ptr = slot; | |
1346 | ||
f57d2163 DE |
1347 | if (symbol_lookup_debug) |
1348 | { | |
1349 | fprintf_unfiltered (gdb_stdlog, | |
1350 | "%s block symbol cache miss for %s, %s\n", | |
1351 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1352 | name, domain_name (domain)); | |
1353 | } | |
1354 | ++bsc->misses; | |
d12307c1 | 1355 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1356 | } |
1357 | ||
1358 | /* Clear out SLOT. */ | |
1359 | ||
1360 | static void | |
1361 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1362 | { | |
1363 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1364 | xfree (slot->value.not_found.name); | |
1365 | slot->state = SYMBOL_SLOT_UNUSED; | |
1366 | } | |
1367 | ||
1368 | /* Mark SYMBOL as found in SLOT. | |
1369 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1370 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1371 | necessarily the objfile the symbol was found in. */ | |
1372 | ||
1373 | static void | |
1374 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1375 | struct symbol_cache_slot *slot, | |
1376 | struct objfile *objfile_context, | |
d12307c1 PMR |
1377 | struct symbol *symbol, |
1378 | const struct block *block) | |
f57d2163 DE |
1379 | { |
1380 | if (bsc == NULL) | |
1381 | return; | |
1382 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1383 | { | |
1384 | ++bsc->collisions; | |
1385 | symbol_cache_clear_slot (slot); | |
1386 | } | |
1387 | slot->state = SYMBOL_SLOT_FOUND; | |
1388 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1389 | slot->value.found.symbol = symbol; |
1390 | slot->value.found.block = block; | |
f57d2163 DE |
1391 | } |
1392 | ||
1393 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1394 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1395 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1396 | ||
1397 | static void | |
1398 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1399 | struct symbol_cache_slot *slot, | |
1400 | struct objfile *objfile_context, | |
1401 | const char *name, domain_enum domain) | |
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_NOT_FOUND; | |
1411 | slot->objfile_context = objfile_context; | |
1412 | slot->value.not_found.name = xstrdup (name); | |
1413 | slot->value.not_found.domain = domain; | |
1414 | } | |
1415 | ||
1416 | /* Flush the symbol cache of PSPACE. */ | |
1417 | ||
1418 | static void | |
1419 | symbol_cache_flush (struct program_space *pspace) | |
1420 | { | |
19ba03f4 SM |
1421 | struct symbol_cache *cache |
1422 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 | 1423 | int pass; |
f57d2163 DE |
1424 | |
1425 | if (cache == NULL) | |
1426 | return; | |
1427 | if (cache->global_symbols == NULL) | |
1428 | { | |
1429 | gdb_assert (symbol_cache_size == 0); | |
1430 | gdb_assert (cache->static_symbols == NULL); | |
1431 | return; | |
1432 | } | |
1433 | ||
1434 | /* If the cache is untouched since the last flush, early exit. | |
1435 | This is important for performance during the startup of a program linked | |
1436 | with 100s (or 1000s) of shared libraries. */ | |
1437 | if (cache->global_symbols->misses == 0 | |
1438 | && cache->static_symbols->misses == 0) | |
1439 | return; | |
1440 | ||
1441 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1442 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1443 | ||
1444 | for (pass = 0; pass < 2; ++pass) | |
1445 | { | |
1446 | struct block_symbol_cache *bsc | |
1447 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1448 | unsigned int i; | |
1449 | ||
1450 | for (i = 0; i < bsc->size; ++i) | |
1451 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1452 | } | |
1453 | ||
1454 | cache->global_symbols->hits = 0; | |
1455 | cache->global_symbols->misses = 0; | |
1456 | cache->global_symbols->collisions = 0; | |
1457 | cache->static_symbols->hits = 0; | |
1458 | cache->static_symbols->misses = 0; | |
1459 | cache->static_symbols->collisions = 0; | |
1460 | } | |
1461 | ||
1462 | /* Dump CACHE. */ | |
1463 | ||
1464 | static void | |
1465 | symbol_cache_dump (const struct symbol_cache *cache) | |
1466 | { | |
1467 | int pass; | |
1468 | ||
1469 | if (cache->global_symbols == NULL) | |
1470 | { | |
1471 | printf_filtered (" <disabled>\n"); | |
1472 | return; | |
1473 | } | |
1474 | ||
1475 | for (pass = 0; pass < 2; ++pass) | |
1476 | { | |
1477 | const struct block_symbol_cache *bsc | |
1478 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1479 | unsigned int i; | |
1480 | ||
1481 | if (pass == 0) | |
1482 | printf_filtered ("Global symbols:\n"); | |
1483 | else | |
1484 | printf_filtered ("Static symbols:\n"); | |
1485 | ||
1486 | for (i = 0; i < bsc->size; ++i) | |
1487 | { | |
1488 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1489 | ||
1490 | QUIT; | |
1491 | ||
1492 | switch (slot->state) | |
1493 | { | |
1494 | case SYMBOL_SLOT_UNUSED: | |
1495 | break; | |
1496 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1497 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1498 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1499 | slot->value.not_found.name, |
1500 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1501 | break; |
1502 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1503 | { |
1504 | struct symbol *found = slot->value.found.symbol; | |
1505 | const struct objfile *context = slot->objfile_context; | |
1506 | ||
1507 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1508 | host_address_to_string (context), | |
1509 | SYMBOL_PRINT_NAME (found), | |
1510 | domain_name (SYMBOL_DOMAIN (found))); | |
1511 | break; | |
1512 | } | |
f57d2163 DE |
1513 | } |
1514 | } | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | /* The "mt print symbol-cache" command. */ | |
1519 | ||
1520 | static void | |
510e5e56 | 1521 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1522 | { |
1523 | struct program_space *pspace; | |
1524 | ||
1525 | ALL_PSPACES (pspace) | |
1526 | { | |
1527 | struct symbol_cache *cache; | |
1528 | ||
1529 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1530 | pspace->num, | |
1531 | pspace->symfile_object_file != NULL | |
1532 | ? objfile_name (pspace->symfile_object_file) | |
1533 | : "(no object file)"); | |
1534 | ||
1535 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1536 | cache |
1537 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1538 | if (cache == NULL) |
1539 | printf_filtered (" <empty>\n"); | |
1540 | else | |
1541 | symbol_cache_dump (cache); | |
1542 | } | |
1543 | } | |
1544 | ||
1545 | /* The "mt flush-symbol-cache" command. */ | |
1546 | ||
1547 | static void | |
510e5e56 | 1548 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1549 | { |
1550 | struct program_space *pspace; | |
1551 | ||
1552 | ALL_PSPACES (pspace) | |
1553 | { | |
1554 | symbol_cache_flush (pspace); | |
1555 | } | |
1556 | } | |
1557 | ||
1558 | /* Print usage statistics of CACHE. */ | |
1559 | ||
1560 | static void | |
1561 | symbol_cache_stats (struct symbol_cache *cache) | |
1562 | { | |
1563 | int pass; | |
1564 | ||
1565 | if (cache->global_symbols == NULL) | |
1566 | { | |
1567 | printf_filtered (" <disabled>\n"); | |
1568 | return; | |
1569 | } | |
1570 | ||
1571 | for (pass = 0; pass < 2; ++pass) | |
1572 | { | |
1573 | const struct block_symbol_cache *bsc | |
1574 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1575 | ||
1576 | QUIT; | |
1577 | ||
1578 | if (pass == 0) | |
1579 | printf_filtered ("Global block cache stats:\n"); | |
1580 | else | |
1581 | printf_filtered ("Static block cache stats:\n"); | |
1582 | ||
1583 | printf_filtered (" size: %u\n", bsc->size); | |
1584 | printf_filtered (" hits: %u\n", bsc->hits); | |
1585 | printf_filtered (" misses: %u\n", bsc->misses); | |
1586 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | /* The "mt print symbol-cache-statistics" command. */ | |
1591 | ||
1592 | static void | |
510e5e56 | 1593 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1594 | { |
1595 | struct program_space *pspace; | |
1596 | ||
1597 | ALL_PSPACES (pspace) | |
1598 | { | |
1599 | struct symbol_cache *cache; | |
1600 | ||
1601 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1602 | pspace->num, | |
1603 | pspace->symfile_object_file != NULL | |
1604 | ? objfile_name (pspace->symfile_object_file) | |
1605 | : "(no object file)"); | |
1606 | ||
1607 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1608 | cache |
1609 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1610 | if (cache == NULL) |
1611 | printf_filtered (" empty, no stats available\n"); | |
1612 | else | |
1613 | symbol_cache_stats (cache); | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | /* This module's 'new_objfile' observer. */ | |
1618 | ||
1619 | static void | |
1620 | symtab_new_objfile_observer (struct objfile *objfile) | |
1621 | { | |
1622 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1623 | symbol_cache_flush (current_program_space); | |
1624 | } | |
1625 | ||
1626 | /* This module's 'free_objfile' observer. */ | |
1627 | ||
1628 | static void | |
1629 | symtab_free_objfile_observer (struct objfile *objfile) | |
1630 | { | |
1631 | symbol_cache_flush (objfile->pspace); | |
1632 | } | |
1633 | \f | |
c906108c SS |
1634 | /* Debug symbols usually don't have section information. We need to dig that |
1635 | out of the minimal symbols and stash that in the debug symbol. */ | |
1636 | ||
ccefe4c4 | 1637 | void |
907fc202 UW |
1638 | fixup_section (struct general_symbol_info *ginfo, |
1639 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1640 | { |
1641 | struct minimal_symbol *msym; | |
c906108c | 1642 | |
bccdca4a UW |
1643 | /* First, check whether a minimal symbol with the same name exists |
1644 | and points to the same address. The address check is required | |
1645 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1646 | point to the function descriptor, while the debug symbol will | |
1647 | point to the actual function code. */ | |
907fc202 UW |
1648 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1649 | if (msym) | |
efd66ac6 | 1650 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1651 | else |
19e2d14b KB |
1652 | { |
1653 | /* Static, function-local variables do appear in the linker | |
1654 | (minimal) symbols, but are frequently given names that won't | |
1655 | be found via lookup_minimal_symbol(). E.g., it has been | |
1656 | observed in frv-uclinux (ELF) executables that a static, | |
1657 | function-local variable named "foo" might appear in the | |
1658 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1659 | point in attempting to extend the lookup-by-name mechanism to | |
1660 | handle this case due to the fact that there can be multiple | |
1661 | names. | |
9af17804 | 1662 | |
19e2d14b KB |
1663 | So, instead, search the section table when lookup by name has |
1664 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1665 | been relocated. If so, the relocation offset (i.e. the | |
1666 | ANOFFSET value) needs to be subtracted from these values when | |
1667 | performing the comparison. We unconditionally subtract it, | |
1668 | because, when no relocation has been performed, the ANOFFSET | |
1669 | value will simply be zero. | |
9af17804 | 1670 | |
19e2d14b KB |
1671 | The address of the symbol whose section we're fixing up HAS |
1672 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1673 | the section isn't yet known and knowing the section is | |
1674 | necessary in order to add the correct relocation value. In | |
1675 | other words, we wouldn't even be in this function (attempting | |
1676 | to compute the section) if it were already known. | |
1677 | ||
1678 | Note that it is possible to search the minimal symbols | |
1679 | (subtracting the relocation value if necessary) to find the | |
1680 | matching minimal symbol, but this is overkill and much less | |
1681 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1682 | symbol, only its section. |
1683 | ||
19e2d14b KB |
1684 | Note that this technique (of doing a section table search) |
1685 | can fail when unrelocated section addresses overlap. For | |
1686 | this reason, we still attempt a lookup by name prior to doing | |
1687 | a search of the section table. */ | |
9af17804 | 1688 | |
19e2d14b | 1689 | struct obj_section *s; |
e27d198c | 1690 | int fallback = -1; |
433759f7 | 1691 | |
19e2d14b KB |
1692 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1693 | { | |
65cf3563 | 1694 | int idx = s - objfile->sections; |
19e2d14b KB |
1695 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1696 | ||
e27d198c TT |
1697 | if (fallback == -1) |
1698 | fallback = idx; | |
1699 | ||
f1f6aadf PA |
1700 | if (obj_section_addr (s) - offset <= addr |
1701 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1702 | { |
19e2d14b KB |
1703 | ginfo->section = idx; |
1704 | return; | |
1705 | } | |
1706 | } | |
e27d198c TT |
1707 | |
1708 | /* If we didn't find the section, assume it is in the first | |
1709 | section. If there is no allocated section, then it hardly | |
1710 | matters what we pick, so just pick zero. */ | |
1711 | if (fallback == -1) | |
1712 | ginfo->section = 0; | |
1713 | else | |
1714 | ginfo->section = fallback; | |
19e2d14b | 1715 | } |
c906108c SS |
1716 | } |
1717 | ||
1718 | struct symbol * | |
fba45db2 | 1719 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1720 | { |
907fc202 UW |
1721 | CORE_ADDR addr; |
1722 | ||
c906108c SS |
1723 | if (!sym) |
1724 | return NULL; | |
1725 | ||
1994afbf DE |
1726 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1727 | return sym; | |
1728 | ||
907fc202 UW |
1729 | /* We either have an OBJFILE, or we can get at it from the sym's |
1730 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1731 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1732 | |
1733 | if (objfile == NULL) | |
08be3fe3 | 1734 | objfile = symbol_objfile (sym); |
907fc202 | 1735 | |
e27d198c TT |
1736 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1737 | return sym; | |
1738 | ||
907fc202 UW |
1739 | /* We should have an objfile by now. */ |
1740 | gdb_assert (objfile); | |
1741 | ||
1742 | switch (SYMBOL_CLASS (sym)) | |
1743 | { | |
1744 | case LOC_STATIC: | |
1745 | case LOC_LABEL: | |
907fc202 UW |
1746 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1747 | break; | |
1748 | case LOC_BLOCK: | |
2b1ffcfd | 1749 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1750 | break; |
1751 | ||
1752 | default: | |
1753 | /* Nothing else will be listed in the minsyms -- no use looking | |
1754 | it up. */ | |
1755 | return sym; | |
1756 | } | |
1757 | ||
1758 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1759 | |
1760 | return sym; | |
1761 | } | |
1762 | ||
b5ec771e PA |
1763 | /* See symtab.h. */ |
1764 | ||
1765 | demangle_for_lookup_info::demangle_for_lookup_info | |
1766 | (const lookup_name_info &lookup_name, language lang) | |
1767 | { | |
1768 | demangle_result_storage storage; | |
1769 | ||
c62446b1 PA |
1770 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1771 | { | |
1772 | gdb::unique_xmalloc_ptr<char> without_params | |
1773 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1774 | lookup_name.completion_mode ()); | |
1775 | ||
1776 | if (without_params != NULL) | |
1777 | { | |
de63c46b PA |
1778 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1779 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1780 | lang, storage); | |
c62446b1 PA |
1781 | return; |
1782 | } | |
1783 | } | |
1784 | ||
de63c46b PA |
1785 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1786 | m_demangled_name = lookup_name.name (); | |
1787 | else | |
1788 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1789 | lang, storage); | |
b5ec771e PA |
1790 | } |
1791 | ||
1792 | /* See symtab.h. */ | |
1793 | ||
1794 | const lookup_name_info & | |
1795 | lookup_name_info::match_any () | |
1796 | { | |
1797 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1798 | symbol names. */ | |
1799 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1800 | true); | |
1801 | ||
1802 | return lookup_name; | |
1803 | } | |
1804 | ||
f8eba3c6 | 1805 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1806 | lookup functions. The result can either be the input NAME |
1807 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1808 | |
2f408ecb | 1809 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1810 | Normally, Ada symbol lookups are performed using the encoded name |
1811 | rather than the demangled name, and so it might seem to make sense | |
1812 | for this function to return an encoded version of NAME. | |
1813 | Unfortunately, we cannot do this, because this function is used in | |
1814 | circumstances where it is not appropriate to try to encode NAME. | |
1815 | For instance, when displaying the frame info, we demangle the name | |
1816 | of each parameter, and then perform a symbol lookup inside our | |
1817 | function using that demangled name. In Ada, certain functions | |
1818 | have internally-generated parameters whose name contain uppercase | |
1819 | characters. Encoding those name would result in those uppercase | |
1820 | characters to become lowercase, and thus cause the symbol lookup | |
1821 | to fail. */ | |
c906108c | 1822 | |
2f408ecb | 1823 | const char * |
f8eba3c6 | 1824 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1825 | demangle_result_storage &storage) |
c906108c | 1826 | { |
9c37b5ae | 1827 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1828 | lookup, so we can always binary search. */ |
53c5240f | 1829 | if (lang == language_cplus) |
729051e6 | 1830 | { |
2f408ecb PA |
1831 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1832 | if (demangled_name != NULL) | |
1833 | return storage.set_malloc_ptr (demangled_name); | |
1834 | ||
1835 | /* If we were given a non-mangled name, canonicalize it | |
1836 | according to the language (so far only for C++). */ | |
1837 | std::string canon = cp_canonicalize_string (name); | |
1838 | if (!canon.empty ()) | |
1839 | return storage.swap_string (canon); | |
729051e6 | 1840 | } |
6aecb9c2 JB |
1841 | else if (lang == language_d) |
1842 | { | |
2f408ecb PA |
1843 | char *demangled_name = d_demangle (name, 0); |
1844 | if (demangled_name != NULL) | |
1845 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1846 | } |
a766d390 DE |
1847 | else if (lang == language_go) |
1848 | { | |
2f408ecb PA |
1849 | char *demangled_name = go_demangle (name, 0); |
1850 | if (demangled_name != NULL) | |
1851 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1852 | } |
729051e6 | 1853 | |
2f408ecb | 1854 | return name; |
f8eba3c6 TT |
1855 | } |
1856 | ||
5ffa0793 PA |
1857 | /* See symtab.h. */ |
1858 | ||
1859 | unsigned int | |
1860 | search_name_hash (enum language language, const char *search_name) | |
1861 | { | |
1862 | return language_def (language)->la_search_name_hash (search_name); | |
1863 | } | |
1864 | ||
cf901d3b | 1865 | /* See symtab.h. |
f8eba3c6 | 1866 | |
cf901d3b | 1867 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1868 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1869 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1870 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1871 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1872 | that there is C++ code below which can error(), but that probably |
1873 | doesn't affect these calls since they are looking for a known | |
1874 | variable and thus can probably assume it will never hit the C++ | |
1875 | code). */ | |
1876 | ||
d12307c1 | 1877 | struct block_symbol |
f8eba3c6 TT |
1878 | lookup_symbol_in_language (const char *name, const struct block *block, |
1879 | const domain_enum domain, enum language lang, | |
1993b719 | 1880 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1881 | { |
2f408ecb PA |
1882 | demangle_result_storage storage; |
1883 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1884 | |
de63c46b PA |
1885 | return lookup_symbol_aux (modified_name, |
1886 | symbol_name_match_type::FULL, | |
1887 | block, domain, lang, | |
2f408ecb | 1888 | is_a_field_of_this); |
fba7f19c EZ |
1889 | } |
1890 | ||
cf901d3b | 1891 | /* See symtab.h. */ |
53c5240f | 1892 | |
d12307c1 | 1893 | struct block_symbol |
53c5240f | 1894 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1895 | domain_enum domain, |
1896 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1897 | { |
1898 | return lookup_symbol_in_language (name, block, domain, | |
1899 | current_language->la_language, | |
2570f2b7 | 1900 | is_a_field_of_this); |
53c5240f PA |
1901 | } |
1902 | ||
cf901d3b | 1903 | /* See symtab.h. */ |
66a17cb6 | 1904 | |
de63c46b PA |
1905 | struct block_symbol |
1906 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1907 | domain_enum domain) | |
1908 | { | |
1909 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1910 | block, domain, language_asm, NULL); | |
1911 | } | |
1912 | ||
1913 | /* See symtab.h. */ | |
1914 | ||
d12307c1 | 1915 | struct block_symbol |
66a17cb6 TT |
1916 | lookup_language_this (const struct language_defn *lang, |
1917 | const struct block *block) | |
1918 | { | |
1919 | if (lang->la_name_of_this == NULL || block == NULL) | |
d12307c1 | 1920 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 | 1921 | |
cc485e62 DE |
1922 | if (symbol_lookup_debug > 1) |
1923 | { | |
1924 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1925 | ||
1926 | fprintf_unfiltered (gdb_stdlog, | |
1927 | "lookup_language_this (%s, %s (objfile %s))", | |
1928 | lang->la_name, host_address_to_string (block), | |
1929 | objfile_debug_name (objfile)); | |
1930 | } | |
1931 | ||
03de6823 | 1932 | while (block) |
66a17cb6 TT |
1933 | { |
1934 | struct symbol *sym; | |
1935 | ||
de63c46b PA |
1936 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1937 | symbol_name_match_type::SEARCH_NAME, | |
1938 | VAR_DOMAIN); | |
66a17cb6 | 1939 | if (sym != NULL) |
f149aabd | 1940 | { |
cc485e62 DE |
1941 | if (symbol_lookup_debug > 1) |
1942 | { | |
1943 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1944 | SYMBOL_PRINT_NAME (sym), | |
1945 | host_address_to_string (sym), | |
1946 | host_address_to_string (block)); | |
1947 | } | |
d12307c1 | 1948 | return (struct block_symbol) {sym, block}; |
f149aabd | 1949 | } |
66a17cb6 | 1950 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1951 | break; |
66a17cb6 TT |
1952 | block = BLOCK_SUPERBLOCK (block); |
1953 | } | |
03de6823 | 1954 | |
cc485e62 DE |
1955 | if (symbol_lookup_debug > 1) |
1956 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 1957 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 TT |
1958 | } |
1959 | ||
2dc3df72 TT |
1960 | /* Given TYPE, a structure/union, |
1961 | return 1 if the component named NAME from the ultimate target | |
1962 | structure/union is defined, otherwise, return 0. */ | |
1963 | ||
1964 | static int | |
1993b719 TT |
1965 | check_field (struct type *type, const char *name, |
1966 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1967 | { |
1968 | int i; | |
1969 | ||
1970 | /* The type may be a stub. */ | |
f168693b | 1971 | type = check_typedef (type); |
2dc3df72 TT |
1972 | |
1973 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1974 | { | |
1975 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1976 | ||
1977 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1978 | { |
1979 | is_a_field_of_this->type = type; | |
1980 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1981 | return 1; | |
1982 | } | |
2dc3df72 TT |
1983 | } |
1984 | ||
1985 | /* C++: If it was not found as a data field, then try to return it | |
1986 | as a pointer to a method. */ | |
1987 | ||
1988 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1989 | { | |
1990 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1991 | { |
1992 | is_a_field_of_this->type = type; | |
1993 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1994 | return 1; | |
1995 | } | |
2dc3df72 TT |
1996 | } |
1997 | ||
1998 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1999 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2000 | return 1; |
2001 | ||
2002 | return 0; | |
2003 | } | |
2004 | ||
53c5240f | 2005 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2006 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2007 | |
d12307c1 | 2008 | static struct block_symbol |
de63c46b PA |
2009 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2010 | const struct block *block, | |
94af9270 | 2011 | const domain_enum domain, enum language language, |
1993b719 | 2012 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2013 | { |
d12307c1 | 2014 | struct block_symbol result; |
53c5240f | 2015 | const struct language_defn *langdef; |
406bc4de | 2016 | |
cc485e62 DE |
2017 | if (symbol_lookup_debug) |
2018 | { | |
2019 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2020 | ||
2021 | fprintf_unfiltered (gdb_stdlog, | |
2022 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2023 | name, host_address_to_string (block), | |
2024 | objfile != NULL | |
2025 | ? objfile_debug_name (objfile) : "NULL", | |
2026 | domain_name (domain), language_str (language)); | |
2027 | } | |
2028 | ||
9a146a11 EZ |
2029 | /* Make sure we do something sensible with is_a_field_of_this, since |
2030 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2031 | certainly use it later. If we don't set it, the contents of |
2032 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2033 | if (is_a_field_of_this != NULL) |
1993b719 | 2034 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2035 | |
e4051eeb DC |
2036 | /* Search specified block and its superiors. Don't search |
2037 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2038 | |
de63c46b | 2039 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2040 | if (result.symbol != NULL) |
cc485e62 DE |
2041 | { |
2042 | if (symbol_lookup_debug) | |
2043 | { | |
2044 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2045 | host_address_to_string (result.symbol)); |
cc485e62 | 2046 | } |
d12307c1 | 2047 | return result; |
cc485e62 | 2048 | } |
c906108c | 2049 | |
53c5240f | 2050 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2051 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2052 | |
2053 | langdef = language_def (language); | |
5f9a71c3 | 2054 | |
6592e36f TT |
2055 | /* Don't do this check if we are searching for a struct. It will |
2056 | not be found by check_field, but will be found by other | |
2057 | means. */ | |
2058 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2059 | { |
d12307c1 | 2060 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2061 | |
d12307c1 | 2062 | if (result.symbol) |
c906108c | 2063 | { |
d12307c1 | 2064 | struct type *t = result.symbol->type; |
9af17804 | 2065 | |
2b2d9e11 VP |
2066 | /* I'm not really sure that type of this can ever |
2067 | be typedefed; just be safe. */ | |
f168693b | 2068 | t = check_typedef (t); |
aa006118 | 2069 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2070 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2071 | |
2b2d9e11 VP |
2072 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2073 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2074 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2075 | langdef->la_name_of_this); |
9af17804 | 2076 | |
1993b719 | 2077 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2078 | { |
2079 | if (symbol_lookup_debug) | |
2080 | { | |
2081 | fprintf_unfiltered (gdb_stdlog, | |
2082 | "lookup_symbol_aux (...) = NULL\n"); | |
2083 | } | |
d12307c1 | 2084 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2085 | } |
c906108c SS |
2086 | } |
2087 | } | |
2088 | ||
53c5240f | 2089 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2090 | up static and global variables. */ |
c906108c | 2091 | |
d12307c1 PMR |
2092 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2093 | if (result.symbol != NULL) | |
cc485e62 DE |
2094 | { |
2095 | if (symbol_lookup_debug) | |
2096 | { | |
2097 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2098 | host_address_to_string (result.symbol)); |
cc485e62 | 2099 | } |
d12307c1 | 2100 | return result; |
cc485e62 | 2101 | } |
c906108c | 2102 | |
774b6a14 TT |
2103 | /* Now search all static file-level symbols. Not strictly correct, |
2104 | but more useful than an error. */ | |
41f62f39 | 2105 | |
d12307c1 | 2106 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2107 | if (symbol_lookup_debug) |
2108 | { | |
2109 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2110 | result.symbol != NULL |
2111 | ? host_address_to_string (result.symbol) | |
2112 | : "NULL"); | |
cc485e62 | 2113 | } |
d12307c1 | 2114 | return result; |
41f62f39 JK |
2115 | } |
2116 | ||
e4051eeb | 2117 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2118 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2119 | |
d12307c1 | 2120 | static struct block_symbol |
de63c46b PA |
2121 | lookup_local_symbol (const char *name, |
2122 | symbol_name_match_type match_type, | |
2123 | const struct block *block, | |
74016e12 DE |
2124 | const domain_enum domain, |
2125 | enum language language) | |
8155455b DC |
2126 | { |
2127 | struct symbol *sym; | |
89a9d1b1 | 2128 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2129 | const char *scope = block_scope (block); |
2130 | ||
e4051eeb DC |
2131 | /* Check if either no block is specified or it's a global block. */ |
2132 | ||
89a9d1b1 | 2133 | if (static_block == NULL) |
d12307c1 | 2134 | return (struct block_symbol) {NULL, NULL}; |
e4051eeb | 2135 | |
89a9d1b1 | 2136 | while (block != static_block) |
f61e8913 | 2137 | { |
de63c46b | 2138 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2139 | if (sym != NULL) |
d12307c1 | 2140 | return (struct block_symbol) {sym, block}; |
edb3359d | 2141 | |
f55ee35c | 2142 | if (language == language_cplus || language == language_fortran) |
13387711 | 2143 | { |
b926417a | 2144 | struct block_symbol blocksym |
d12307c1 PMR |
2145 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2146 | domain); | |
2147 | ||
b926417a TT |
2148 | if (blocksym.symbol != NULL) |
2149 | return blocksym; | |
13387711 SW |
2150 | } |
2151 | ||
edb3359d DJ |
2152 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2153 | break; | |
f61e8913 DC |
2154 | block = BLOCK_SUPERBLOCK (block); |
2155 | } | |
2156 | ||
3aee438b | 2157 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2158 | |
d12307c1 | 2159 | return (struct block_symbol) {NULL, NULL}; |
f61e8913 DC |
2160 | } |
2161 | ||
cf901d3b | 2162 | /* See symtab.h. */ |
3a40aaa0 | 2163 | |
c0201579 | 2164 | struct objfile * |
3a40aaa0 UW |
2165 | lookup_objfile_from_block (const struct block *block) |
2166 | { | |
3a40aaa0 UW |
2167 | if (block == NULL) |
2168 | return NULL; | |
2169 | ||
2170 | block = block_global_block (block); | |
43f3e411 | 2171 | /* Look through all blockvectors. */ |
2030c079 | 2172 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2173 | { |
b669c953 | 2174 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2175 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2176 | GLOBAL_BLOCK)) | |
2177 | { | |
2178 | if (obj->separate_debug_objfile_backlink) | |
2179 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2180 | |
d8aeb77f TT |
2181 | return obj; |
2182 | } | |
2183 | } | |
3a40aaa0 UW |
2184 | |
2185 | return NULL; | |
2186 | } | |
2187 | ||
cf901d3b | 2188 | /* See symtab.h. */ |
f61e8913 | 2189 | |
5f9a71c3 | 2190 | struct symbol * |
de63c46b PA |
2191 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2192 | const struct block *block, | |
d1a2d36d | 2193 | const domain_enum domain) |
f61e8913 DC |
2194 | { |
2195 | struct symbol *sym; | |
f61e8913 | 2196 | |
cc485e62 DE |
2197 | if (symbol_lookup_debug > 1) |
2198 | { | |
2199 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2200 | ||
2201 | fprintf_unfiltered (gdb_stdlog, | |
2202 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2203 | name, host_address_to_string (block), | |
2204 | objfile_debug_name (objfile), | |
2205 | domain_name (domain)); | |
2206 | } | |
2207 | ||
de63c46b | 2208 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2209 | if (sym) |
8155455b | 2210 | { |
cc485e62 DE |
2211 | if (symbol_lookup_debug > 1) |
2212 | { | |
2213 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2214 | host_address_to_string (sym)); | |
2215 | } | |
21b556f4 | 2216 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2217 | } |
2218 | ||
cc485e62 DE |
2219 | if (symbol_lookup_debug > 1) |
2220 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2221 | return NULL; |
2222 | } | |
2223 | ||
cf901d3b | 2224 | /* See symtab.h. */ |
3a40aaa0 | 2225 | |
d12307c1 | 2226 | struct block_symbol |
efad9b6a | 2227 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 2228 | const char *name, |
21b556f4 | 2229 | const domain_enum domain) |
3a40aaa0 | 2230 | { |
efad9b6a | 2231 | struct objfile *objfile; |
3a40aaa0 | 2232 | |
15d123c9 TG |
2233 | for (objfile = main_objfile; |
2234 | objfile; | |
2235 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
2236 | { | |
d12307c1 PMR |
2237 | struct block_symbol result |
2238 | = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain); | |
15d123c9 | 2239 | |
d12307c1 PMR |
2240 | if (result.symbol != NULL) |
2241 | return result; | |
15d123c9 | 2242 | } |
56e3f43c | 2243 | |
d12307c1 | 2244 | return (struct block_symbol) {NULL, NULL}; |
3a40aaa0 UW |
2245 | } |
2246 | ||
19630284 JB |
2247 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2248 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2249 | depending on whether or not we want to search global symbols or |
2250 | static symbols. */ | |
2251 | ||
d12307c1 | 2252 | static struct block_symbol |
74016e12 DE |
2253 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
2254 | const char *name, const domain_enum domain) | |
19630284 | 2255 | { |
ba715d7f JK |
2256 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2257 | ||
cc485e62 DE |
2258 | if (symbol_lookup_debug > 1) |
2259 | { | |
2260 | fprintf_unfiltered (gdb_stdlog, | |
2261 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2262 | objfile_debug_name (objfile), | |
2263 | block_index == GLOBAL_BLOCK | |
2264 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2265 | name, domain_name (domain)); | |
2266 | } | |
2267 | ||
b669c953 | 2268 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2269 | { |
43f3e411 DE |
2270 | const struct blockvector *bv; |
2271 | const struct block *block; | |
d12307c1 | 2272 | struct block_symbol result; |
43f3e411 DE |
2273 | |
2274 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2275 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2276 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2277 | result.block = block; | |
2278 | if (result.symbol != NULL) | |
a743abeb | 2279 | { |
cc485e62 DE |
2280 | if (symbol_lookup_debug > 1) |
2281 | { | |
2282 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2283 | host_address_to_string (result.symbol), |
cc485e62 DE |
2284 | host_address_to_string (block)); |
2285 | } | |
d12307c1 PMR |
2286 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2287 | return result; | |
2288 | ||
a743abeb DE |
2289 | } |
2290 | } | |
19630284 | 2291 | |
cc485e62 DE |
2292 | if (symbol_lookup_debug > 1) |
2293 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 2294 | return (struct block_symbol) {NULL, NULL}; |
19630284 JB |
2295 | } |
2296 | ||
74016e12 | 2297 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2298 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2299 | and all associated separate debug objfiles. |
2300 | ||
2301 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2302 | because the outer loop will cause them to be searched too. This case is | |
2303 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2304 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2305 | |
d12307c1 | 2306 | static struct block_symbol |
422d65e7 DE |
2307 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2308 | const char *linkage_name, | |
2309 | domain_enum domain) | |
2310 | { | |
2311 | enum language lang = current_language->la_language; | |
422d65e7 DE |
2312 | struct objfile *main_objfile, *cur_objfile; |
2313 | ||
2f408ecb PA |
2314 | demangle_result_storage storage; |
2315 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2316 | ||
422d65e7 DE |
2317 | if (objfile->separate_debug_objfile_backlink) |
2318 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2319 | else | |
2320 | main_objfile = objfile; | |
2321 | ||
2322 | for (cur_objfile = main_objfile; | |
2323 | cur_objfile; | |
2324 | cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile)) | |
2325 | { | |
d12307c1 PMR |
2326 | struct block_symbol result; |
2327 | ||
2328 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2329 | modified_name, domain); | |
2330 | if (result.symbol == NULL) | |
2331 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2332 | modified_name, domain); | |
2333 | if (result.symbol != NULL) | |
2f408ecb | 2334 | return result; |
422d65e7 DE |
2335 | } |
2336 | ||
d12307c1 | 2337 | return (struct block_symbol) {NULL, NULL}; |
422d65e7 DE |
2338 | } |
2339 | ||
08c23b0d TT |
2340 | /* A helper function that throws an exception when a symbol was found |
2341 | in a psymtab but not in a symtab. */ | |
2342 | ||
2343 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 2344 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 2345 | struct compunit_symtab *cust) |
08c23b0d TT |
2346 | { |
2347 | error (_("\ | |
2348 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2349 | %s may be an inlined function, or may be a template function\n \ | |
2350 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2351 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2352 | name, |
2353 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2354 | name, name); | |
08c23b0d TT |
2355 | } |
2356 | ||
74016e12 DE |
2357 | /* A helper function for various lookup routines that interfaces with |
2358 | the "quick" symbol table functions. */ | |
8155455b | 2359 | |
d12307c1 | 2360 | static struct block_symbol |
74016e12 DE |
2361 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
2362 | const char *name, const domain_enum domain) | |
8155455b | 2363 | { |
43f3e411 | 2364 | struct compunit_symtab *cust; |
346d1dfe | 2365 | const struct blockvector *bv; |
8155455b | 2366 | const struct block *block; |
d12307c1 | 2367 | struct block_symbol result; |
8155455b | 2368 | |
ccefe4c4 | 2369 | if (!objfile->sf) |
d12307c1 | 2370 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2371 | |
2372 | if (symbol_lookup_debug > 1) | |
2373 | { | |
2374 | fprintf_unfiltered (gdb_stdlog, | |
2375 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2376 | objfile_debug_name (objfile), | |
2377 | block_index == GLOBAL_BLOCK | |
2378 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2379 | name, domain_name (domain)); | |
2380 | } | |
2381 | ||
43f3e411 DE |
2382 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2383 | if (cust == NULL) | |
cc485e62 DE |
2384 | { |
2385 | if (symbol_lookup_debug > 1) | |
2386 | { | |
2387 | fprintf_unfiltered (gdb_stdlog, | |
2388 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2389 | } | |
d12307c1 | 2390 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2391 | } |
8155455b | 2392 | |
43f3e411 | 2393 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2394 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2395 | result.symbol = block_lookup_symbol (block, name, |
2396 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2397 | if (result.symbol == NULL) |
43f3e411 | 2398 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2399 | |
2400 | if (symbol_lookup_debug > 1) | |
2401 | { | |
2402 | fprintf_unfiltered (gdb_stdlog, | |
2403 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2404 | host_address_to_string (result.symbol), |
cc485e62 DE |
2405 | host_address_to_string (block)); |
2406 | } | |
2407 | ||
d12307c1 PMR |
2408 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2409 | result.block = block; | |
2410 | return result; | |
8155455b DC |
2411 | } |
2412 | ||
cf901d3b | 2413 | /* See symtab.h. */ |
5f9a71c3 | 2414 | |
d12307c1 | 2415 | struct block_symbol |
f606139a DE |
2416 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2417 | const char *name, | |
5f9a71c3 | 2418 | const struct block *block, |
21b556f4 | 2419 | const domain_enum domain) |
5f9a71c3 | 2420 | { |
d12307c1 | 2421 | struct block_symbol result; |
5f9a71c3 DC |
2422 | |
2423 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2424 | this (or what turned into this) was part of lookup_symbol_aux; | |
2425 | I'm much less worried about these questions now, since these | |
2426 | decisions have turned out well, but I leave these comments here | |
2427 | for posterity. */ | |
2428 | ||
2429 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2430 | not it would be appropriate to search the current global block | |
2431 | here as well. (That's what this code used to do before the | |
2432 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2433 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2434 | next. On the other hand, if decode_line_1 is passed an argument |
2435 | like filename:var, then the user presumably wants 'var' to be | |
2436 | searched for in filename. On the third hand, there shouldn't be | |
2437 | multiple global variables all of which are named 'var', and it's | |
2438 | not like decode_line_1 has ever restricted its search to only | |
2439 | global variables in a single filename. All in all, only | |
2440 | searching the static block here seems best: it's correct and it's | |
2441 | cleanest. */ | |
2442 | ||
2443 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2444 | issue here: if you usually search for global symbols in the | |
2445 | current file, then it would be slightly better to search the | |
2446 | current global block before searching all the symtabs. But there | |
2447 | are other factors that have a much greater effect on performance | |
2448 | than that one, so I don't think we should worry about that for | |
2449 | now. */ | |
2450 | ||
d9060ba6 DE |
2451 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2452 | the current objfile. Searching the current objfile first is useful | |
2453 | for both matching user expectations as well as performance. */ | |
2454 | ||
d12307c1 PMR |
2455 | result = lookup_symbol_in_static_block (name, block, domain); |
2456 | if (result.symbol != NULL) | |
2457 | return result; | |
5f9a71c3 | 2458 | |
1994afbf DE |
2459 | /* If we didn't find a definition for a builtin type in the static block, |
2460 | search for it now. This is actually the right thing to do and can be | |
2461 | a massive performance win. E.g., when debugging a program with lots of | |
2462 | shared libraries we could search all of them only to find out the | |
2463 | builtin type isn't defined in any of them. This is common for types | |
2464 | like "void". */ | |
2465 | if (domain == VAR_DOMAIN) | |
2466 | { | |
2467 | struct gdbarch *gdbarch; | |
2468 | ||
2469 | if (block == NULL) | |
2470 | gdbarch = target_gdbarch (); | |
2471 | else | |
2472 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2473 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2474 | gdbarch, name); | |
2475 | result.block = NULL; | |
2476 | if (result.symbol != NULL) | |
2477 | return result; | |
1994afbf DE |
2478 | } |
2479 | ||
08724ab7 | 2480 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2481 | } |
2482 | ||
cf901d3b | 2483 | /* See symtab.h. */ |
5f9a71c3 | 2484 | |
d12307c1 | 2485 | struct block_symbol |
24d864bb DE |
2486 | lookup_symbol_in_static_block (const char *name, |
2487 | const struct block *block, | |
2488 | const domain_enum domain) | |
5f9a71c3 DC |
2489 | { |
2490 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2491 | struct symbol *sym; |
5f9a71c3 | 2492 | |
cc485e62 | 2493 | if (static_block == NULL) |
d12307c1 | 2494 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2495 | |
2496 | if (symbol_lookup_debug) | |
2497 | { | |
2498 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2499 | ||
2500 | fprintf_unfiltered (gdb_stdlog, | |
2501 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2502 | " %s)\n", | |
2503 | name, | |
2504 | host_address_to_string (block), | |
2505 | objfile_debug_name (objfile), | |
2506 | domain_name (domain)); | |
2507 | } | |
2508 | ||
de63c46b PA |
2509 | sym = lookup_symbol_in_block (name, |
2510 | symbol_name_match_type::FULL, | |
2511 | static_block, domain); | |
cc485e62 DE |
2512 | if (symbol_lookup_debug) |
2513 | { | |
2514 | fprintf_unfiltered (gdb_stdlog, | |
2515 | "lookup_symbol_in_static_block (...) = %s\n", | |
2516 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2517 | } | |
d12307c1 | 2518 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2519 | } |
2520 | ||
af3768e9 DE |
2521 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2522 | 1) First search expanded symtabs, and if not found | |
2523 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2524 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2525 | ||
d12307c1 | 2526 | static struct block_symbol |
af3768e9 DE |
2527 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
2528 | const char *name, const domain_enum domain) | |
2529 | { | |
d12307c1 | 2530 | struct block_symbol result; |
af3768e9 | 2531 | |
cc485e62 DE |
2532 | if (symbol_lookup_debug) |
2533 | { | |
2534 | fprintf_unfiltered (gdb_stdlog, | |
2535 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2536 | objfile_debug_name (objfile), | |
2537 | block_index == GLOBAL_BLOCK | |
2538 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2539 | name, domain_name (domain)); | |
2540 | } | |
2541 | ||
af3768e9 DE |
2542 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2543 | name, domain); | |
d12307c1 | 2544 | if (result.symbol != NULL) |
af3768e9 | 2545 | { |
cc485e62 DE |
2546 | if (symbol_lookup_debug) |
2547 | { | |
2548 | fprintf_unfiltered (gdb_stdlog, | |
2549 | "lookup_symbol_in_objfile (...) = %s" | |
2550 | " (in symtabs)\n", | |
d12307c1 | 2551 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2552 | } |
2553 | return result; | |
af3768e9 DE |
2554 | } |
2555 | ||
cc485e62 DE |
2556 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2557 | name, domain); | |
2558 | if (symbol_lookup_debug) | |
2559 | { | |
2560 | fprintf_unfiltered (gdb_stdlog, | |
2561 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2562 | result.symbol != NULL |
2563 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2564 | : "NULL", |
d12307c1 | 2565 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2566 | } |
af3768e9 DE |
2567 | return result; |
2568 | } | |
2569 | ||
2570 | /* See symtab.h. */ | |
2571 | ||
d12307c1 | 2572 | struct block_symbol |
af3768e9 DE |
2573 | lookup_static_symbol (const char *name, const domain_enum domain) |
2574 | { | |
f57d2163 | 2575 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2576 | struct block_symbol result; |
f57d2163 DE |
2577 | struct block_symbol_cache *bsc; |
2578 | struct symbol_cache_slot *slot; | |
2579 | ||
2580 | /* Lookup in STATIC_BLOCK is not current-objfile-dependent, so just pass | |
2581 | NULL for OBJFILE_CONTEXT. */ | |
2582 | result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain, | |
2583 | &bsc, &slot); | |
d12307c1 | 2584 | if (result.symbol != NULL) |
f57d2163 | 2585 | { |
d12307c1 PMR |
2586 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2587 | return (struct block_symbol) {NULL, NULL}; | |
f57d2163 DE |
2588 | return result; |
2589 | } | |
af3768e9 | 2590 | |
2030c079 | 2591 | for (objfile *objfile : current_program_space->objfiles ()) |
af3768e9 DE |
2592 | { |
2593 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
d12307c1 | 2594 | if (result.symbol != NULL) |
f57d2163 DE |
2595 | { |
2596 | /* Still pass NULL for OBJFILE_CONTEXT here. */ | |
d12307c1 PMR |
2597 | symbol_cache_mark_found (bsc, slot, NULL, result.symbol, |
2598 | result.block); | |
f57d2163 DE |
2599 | return result; |
2600 | } | |
af3768e9 DE |
2601 | } |
2602 | ||
f57d2163 DE |
2603 | /* Still pass NULL for OBJFILE_CONTEXT here. */ |
2604 | symbol_cache_mark_not_found (bsc, slot, NULL, name, domain); | |
d12307c1 | 2605 | return (struct block_symbol) {NULL, NULL}; |
af3768e9 DE |
2606 | } |
2607 | ||
19630284 JB |
2608 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2609 | ||
2610 | struct global_sym_lookup_data | |
2611 | { | |
2612 | /* The name of the symbol we are searching for. */ | |
2613 | const char *name; | |
2614 | ||
2615 | /* The domain to use for our search. */ | |
2616 | domain_enum domain; | |
2617 | ||
2618 | /* The field where the callback should store the symbol if found. | |
d12307c1 PMR |
2619 | It should be initialized to {NULL, NULL} before the search is started. */ |
2620 | struct block_symbol result; | |
19630284 JB |
2621 | }; |
2622 | ||
2623 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
2624 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
2625 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
2626 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
2627 | ||
2628 | static int | |
2629 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
2630 | void *cb_data) | |
2631 | { | |
2632 | struct global_sym_lookup_data *data = | |
2633 | (struct global_sym_lookup_data *) cb_data; | |
2634 | ||
d12307c1 PMR |
2635 | gdb_assert (data->result.symbol == NULL |
2636 | && data->result.block == NULL); | |
19630284 | 2637 | |
af3768e9 DE |
2638 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
2639 | data->name, data->domain); | |
19630284 JB |
2640 | |
2641 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2642 | keep going. */ | |
d12307c1 | 2643 | return (data->result.symbol != NULL); |
19630284 JB |
2644 | } |
2645 | ||
cf901d3b | 2646 | /* See symtab.h. */ |
5f9a71c3 | 2647 | |
d12307c1 | 2648 | struct block_symbol |
08724ab7 | 2649 | lookup_global_symbol (const char *name, |
3a40aaa0 | 2650 | const struct block *block, |
21b556f4 | 2651 | const domain_enum domain) |
5f9a71c3 | 2652 | { |
f57d2163 | 2653 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2654 | struct block_symbol result; |
f57d2163 | 2655 | struct objfile *objfile; |
19630284 | 2656 | struct global_sym_lookup_data lookup_data; |
f57d2163 DE |
2657 | struct block_symbol_cache *bsc; |
2658 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2659 | |
6a3ca067 | 2660 | objfile = lookup_objfile_from_block (block); |
f57d2163 DE |
2661 | |
2662 | /* First see if we can find the symbol in the cache. | |
2663 | This works because we use the current objfile to qualify the lookup. */ | |
d12307c1 PMR |
2664 | result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain, |
2665 | &bsc, &slot); | |
2666 | if (result.symbol != NULL) | |
f57d2163 | 2667 | { |
d12307c1 PMR |
2668 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2669 | return (struct block_symbol) {NULL, NULL}; | |
2670 | return result; | |
f57d2163 DE |
2671 | } |
2672 | ||
2673 | /* Call library-specific lookup procedure. */ | |
67ff19f7 | 2674 | if (objfile != NULL) |
d12307c1 | 2675 | result = solib_global_lookup (objfile, name, domain); |
b2fb95e0 | 2676 | |
f57d2163 | 2677 | /* If that didn't work go a global search (of global blocks, heh). */ |
d12307c1 | 2678 | if (result.symbol == NULL) |
f57d2163 DE |
2679 | { |
2680 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2681 | lookup_data.name = name; | |
2682 | lookup_data.domain = domain; | |
2683 | gdbarch_iterate_over_objfiles_in_search_order | |
2684 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
2685 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); | |
d12307c1 | 2686 | result = lookup_data.result; |
f57d2163 | 2687 | } |
6a3ca067 | 2688 | |
d12307c1 PMR |
2689 | if (result.symbol != NULL) |
2690 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2691 | else |
2692 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2693 | ||
d12307c1 | 2694 | return result; |
5f9a71c3 DC |
2695 | } |
2696 | ||
4186eb54 KS |
2697 | int |
2698 | symbol_matches_domain (enum language symbol_language, | |
2699 | domain_enum symbol_domain, | |
2700 | domain_enum domain) | |
2701 | { | |
2702 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2703 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2704 | if (symbol_language == language_cplus | |
2705 | || symbol_language == language_d | |
65547233 TT |
2706 | || symbol_language == language_ada |
2707 | || symbol_language == language_rust) | |
4186eb54 KS |
2708 | { |
2709 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2710 | && symbol_domain == STRUCT_DOMAIN) | |
2711 | return 1; | |
2712 | } | |
2713 | /* For all other languages, strict match is required. */ | |
2714 | return (symbol_domain == domain); | |
2715 | } | |
2716 | ||
cf901d3b | 2717 | /* See symtab.h. */ |
c906108c | 2718 | |
ccefe4c4 TT |
2719 | struct type * |
2720 | lookup_transparent_type (const char *name) | |
c906108c | 2721 | { |
ccefe4c4 TT |
2722 | return current_language->la_lookup_transparent_type (name); |
2723 | } | |
9af17804 | 2724 | |
ccefe4c4 TT |
2725 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2726 | "quick" symbol table functions. */ | |
357e46e7 | 2727 | |
ccefe4c4 | 2728 | static struct type * |
f88cb4b6 | 2729 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2730 | const char *name) |
2731 | { | |
43f3e411 | 2732 | struct compunit_symtab *cust; |
346d1dfe | 2733 | const struct blockvector *bv; |
ccefe4c4 TT |
2734 | struct block *block; |
2735 | struct symbol *sym; | |
c906108c | 2736 | |
ccefe4c4 TT |
2737 | if (!objfile->sf) |
2738 | return NULL; | |
43f3e411 DE |
2739 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2740 | STRUCT_DOMAIN); | |
2741 | if (cust == NULL) | |
ccefe4c4 | 2742 | return NULL; |
c906108c | 2743 | |
43f3e411 | 2744 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2745 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2746 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2747 | block_find_non_opaque_type, NULL); | |
2748 | if (sym == NULL) | |
43f3e411 | 2749 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2750 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2751 | return SYMBOL_TYPE (sym); | |
2752 | } | |
08c23b0d | 2753 | |
b2e2f908 DE |
2754 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2755 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2756 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2757 | ||
2758 | static struct type * | |
2759 | basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index, | |
2760 | const char *name) | |
2761 | { | |
b2e2f908 DE |
2762 | const struct blockvector *bv; |
2763 | const struct block *block; | |
2764 | const struct symbol *sym; | |
2765 | ||
b669c953 | 2766 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2767 | { |
2768 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2769 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2770 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2771 | block_find_non_opaque_type, NULL); | |
2772 | if (sym != NULL) | |
2773 | { | |
2774 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2775 | return SYMBOL_TYPE (sym); | |
2776 | } | |
2777 | } | |
c906108c | 2778 | |
ccefe4c4 | 2779 | return NULL; |
b368761e | 2780 | } |
c906108c | 2781 | |
b368761e DC |
2782 | /* The standard implementation of lookup_transparent_type. This code |
2783 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2784 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2785 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2786 | global blocks. */ |
c906108c SS |
2787 | |
2788 | struct type * | |
b368761e | 2789 | basic_lookup_transparent_type (const char *name) |
c906108c | 2790 | { |
ccefe4c4 | 2791 | struct type *t; |
c906108c SS |
2792 | |
2793 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2794 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2795 | of the desired name as a global, then do psymtab-to-symtab |
2796 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2797 | |
2030c079 | 2798 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2799 | { |
2800 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2801 | if (t) | |
2802 | return t; | |
2803 | } | |
c906108c | 2804 | |
2030c079 | 2805 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2806 | { |
2807 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2808 | if (t) | |
2809 | return t; | |
2810 | } | |
c906108c SS |
2811 | |
2812 | /* Now search the static file-level symbols. | |
2813 | Not strictly correct, but more useful than an error. | |
2814 | Do the symtab's first, then | |
c378eb4e | 2815 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2816 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2817 | conversion on the fly and return the found symbol. */ |
c906108c | 2818 | |
2030c079 | 2819 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2820 | { |
2821 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2822 | if (t) | |
2823 | return t; | |
2824 | } | |
c906108c | 2825 | |
2030c079 | 2826 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2827 | { |
2828 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2829 | if (t) | |
2830 | return t; | |
2831 | } | |
ccefe4c4 | 2832 | |
c906108c SS |
2833 | return (struct type *) 0; |
2834 | } | |
2835 | ||
4eeaa230 | 2836 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
14bc53a8 PA |
2837 | |
2838 | For each symbol that matches, CALLBACK is called. The symbol is | |
2839 | passed to the callback. | |
2840 | ||
2841 | If CALLBACK returns false, the iteration ends. Otherwise, the | |
4eeaa230 | 2842 | search continues. */ |
f8eba3c6 TT |
2843 | |
2844 | void | |
b5ec771e PA |
2845 | iterate_over_symbols (const struct block *block, |
2846 | const lookup_name_info &name, | |
f8eba3c6 | 2847 | const domain_enum domain, |
14bc53a8 | 2848 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2849 | { |
4eeaa230 DE |
2850 | struct block_iterator iter; |
2851 | struct symbol *sym; | |
f8eba3c6 | 2852 | |
358d6ab3 | 2853 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2854 | { |
4186eb54 KS |
2855 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2856 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2857 | { |
7e41c8db KS |
2858 | struct block_symbol block_sym = {sym, block}; |
2859 | ||
2860 | if (!callback (&block_sym)) | |
4eeaa230 | 2861 | return; |
f8eba3c6 | 2862 | } |
f8eba3c6 TT |
2863 | } |
2864 | } | |
2865 | ||
43f3e411 DE |
2866 | /* Find the compunit symtab associated with PC and SECTION. |
2867 | This will read in debug info as necessary. */ | |
c906108c | 2868 | |
43f3e411 DE |
2869 | struct compunit_symtab * |
2870 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2871 | { |
43f3e411 | 2872 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2873 | CORE_ADDR distance = 0; |
77e371c0 | 2874 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2875 | |
2876 | /* If we know that this is not a text address, return failure. This is | |
2877 | necessary because we loop based on the block's high and low code | |
2878 | addresses, which do not include the data ranges, and because | |
2879 | we call find_pc_sect_psymtab which has a similar restriction based | |
2880 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 TT |
2881 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
2882 | if (msymbol.minsym | |
2883 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
2884 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
2885 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
2886 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
2887 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
8a48e967 | 2888 | return NULL; |
c906108c SS |
2889 | |
2890 | /* Search all symtabs for the one whose file contains our address, and which | |
2891 | is the smallest of all the ones containing the address. This is designed | |
2892 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2893 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2894 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2895 | ||
2896 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2897 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2898 | been read in already via the dependency mechanism. |
2899 | It might be swifter to create several symtabs with the same name | |
2900 | like xcoff does (I'm not sure). | |
2901 | ||
2902 | It also happens for objfiles that have their functions reordered. | |
2903 | For these, the symtab we are looking for is not necessarily read in. */ | |
2904 | ||
2030c079 | 2905 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2906 | { |
b669c953 | 2907 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f TT |
2908 | { |
2909 | struct block *b; | |
2910 | const struct blockvector *bv; | |
43f3e411 | 2911 | |
d8aeb77f TT |
2912 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2913 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2914 | |
d8aeb77f TT |
2915 | if (BLOCK_START (b) <= pc |
2916 | && BLOCK_END (b) > pc | |
2917 | && (distance == 0 | |
2918 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2919 | { | |
2920 | /* For an objfile that has its functions reordered, | |
2921 | find_pc_psymtab will find the proper partial symbol table | |
2922 | and we simply return its corresponding symtab. */ | |
2923 | /* In order to better support objfiles that contain both | |
2924 | stabs and coff debugging info, we continue on if a psymtab | |
2925 | can't be found. */ | |
2926 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2927 | { | |
2928 | struct compunit_symtab *result; | |
2929 | ||
2930 | result | |
2931 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2932 | msymbol, | |
2933 | pc, | |
2934 | section, | |
2935 | 0); | |
2936 | if (result != NULL) | |
2937 | return result; | |
2938 | } | |
2939 | if (section != 0) | |
2940 | { | |
2941 | struct block_iterator iter; | |
2942 | struct symbol *sym = NULL; | |
c906108c | 2943 | |
d8aeb77f TT |
2944 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2945 | { | |
2946 | fixup_symbol_section (sym, obj_file); | |
2947 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2948 | sym), | |
2949 | section)) | |
2950 | break; | |
2951 | } | |
2952 | if (sym == NULL) | |
2953 | continue; /* No symbol in this symtab matches | |
2954 | section. */ | |
2955 | } | |
2956 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2957 | best_cust = cust; | |
2958 | } | |
2959 | } | |
2960 | } | |
c906108c | 2961 | |
43f3e411 DE |
2962 | if (best_cust != NULL) |
2963 | return best_cust; | |
c906108c | 2964 | |
072cabfe DE |
2965 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2966 | ||
2030c079 | 2967 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2968 | { |
2969 | struct compunit_symtab *result; | |
2970 | ||
2971 | if (!objf->sf) | |
2972 | continue; | |
2973 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2974 | msymbol, | |
2975 | pc, section, | |
2976 | 1); | |
2977 | if (result != NULL) | |
2978 | return result; | |
2979 | } | |
ccefe4c4 TT |
2980 | |
2981 | return NULL; | |
c906108c SS |
2982 | } |
2983 | ||
43f3e411 DE |
2984 | /* Find the compunit symtab associated with PC. |
2985 | This will read in debug info as necessary. | |
2986 | Backward compatibility, no section. */ | |
c906108c | 2987 | |
43f3e411 DE |
2988 | struct compunit_symtab * |
2989 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2990 | { |
43f3e411 | 2991 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2992 | } |
71a3c369 TT |
2993 | |
2994 | /* See symtab.h. */ | |
2995 | ||
2996 | struct symbol * | |
2997 | find_symbol_at_address (CORE_ADDR address) | |
2998 | { | |
2030c079 | 2999 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3000 | { |
3001 | if (objfile->sf == NULL | |
3002 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
3003 | continue; | |
71a3c369 | 3004 | |
aed57c53 TT |
3005 | struct compunit_symtab *symtab |
3006 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
3007 | if (symtab != NULL) | |
3008 | { | |
3009 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 3010 | |
aed57c53 | 3011 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 3012 | { |
aed57c53 TT |
3013 | struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
3014 | struct block_iterator iter; | |
3015 | struct symbol *sym; | |
3016 | ||
3017 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3018 | { | |
3019 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3020 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3021 | return sym; | |
3022 | } | |
71a3c369 | 3023 | } |
aed57c53 TT |
3024 | } |
3025 | } | |
71a3c369 TT |
3026 | |
3027 | return NULL; | |
3028 | } | |
3029 | ||
c906108c | 3030 | \f |
c5aa993b | 3031 | |
7e73cedf | 3032 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3033 | Return a structure containing a symtab pointer, a line number, |
3034 | and a pc range for the entire source line. | |
3035 | The value's .pc field is NOT the specified pc. | |
3036 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3037 | use the line that ends there. Otherwise, in that case, the line | |
3038 | that begins there is used. */ | |
3039 | ||
3040 | /* The big complication here is that a line may start in one file, and end just | |
3041 | before the start of another file. This usually occurs when you #include | |
3042 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3043 | range, we must search all symtabs associated with this compilation unit, and | |
3044 | find the one whose first PC is closer than that of the next line in this | |
3045 | symtab. */ | |
3046 | ||
c906108c | 3047 | struct symtab_and_line |
714835d5 | 3048 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3049 | { |
43f3e411 | 3050 | struct compunit_symtab *cust; |
52f0bd74 AC |
3051 | struct linetable *l; |
3052 | int len; | |
52f0bd74 | 3053 | struct linetable_entry *item; |
346d1dfe | 3054 | const struct blockvector *bv; |
7cbd4a93 | 3055 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3056 | |
3057 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3058 | ||
3059 | struct linetable_entry *best = NULL; | |
3060 | CORE_ADDR best_end = 0; | |
3061 | struct symtab *best_symtab = 0; | |
3062 | ||
3063 | /* Store here the first line number | |
3064 | of a file which contains the line at the smallest pc after PC. | |
3065 | If we don't find a line whose range contains PC, | |
3066 | we will use a line one less than this, | |
3067 | with a range from the start of that file to the first line's pc. */ | |
3068 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3069 | |
3070 | /* Info on best line seen in this file. */ | |
3071 | ||
3072 | struct linetable_entry *prev; | |
3073 | ||
3074 | /* If this pc is not from the current frame, | |
3075 | it is the address of the end of a call instruction. | |
3076 | Quite likely that is the start of the following statement. | |
3077 | But what we want is the statement containing the instruction. | |
3078 | Fudge the pc to make sure we get that. */ | |
3079 | ||
b77b1eb7 JB |
3080 | /* It's tempting to assume that, if we can't find debugging info for |
3081 | any function enclosing PC, that we shouldn't search for line | |
3082 | number info, either. However, GAS can emit line number info for | |
3083 | assembly files --- very helpful when debugging hand-written | |
3084 | assembly code. In such a case, we'd have no debug info for the | |
3085 | function, but we would have line info. */ | |
648f4f79 | 3086 | |
c906108c SS |
3087 | if (notcurrent) |
3088 | pc -= 1; | |
3089 | ||
c5aa993b | 3090 | /* elz: added this because this function returned the wrong |
c906108c | 3091 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3092 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3093 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3094 | taken to be the one of the line before the pc. */ |
3095 | ||
c906108c | 3096 | /* RT: Further explanation: |
c5aa993b | 3097 | |
c906108c SS |
3098 | * We have stubs (trampolines) inserted between procedures. |
3099 | * | |
3100 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3101 | * exists in the main image. | |
3102 | * | |
3103 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3104 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3105 | * the others appear as text. E.g.: |
3106 | * | |
9af17804 | 3107 | * Minimal symbol table for main image |
c906108c SS |
3108 | * main: code for main (text symbol) |
3109 | * shr1: stub (trampoline symbol) | |
3110 | * foo: code for foo (text symbol) | |
3111 | * ... | |
3112 | * Minimal symbol table for "shr1" image: | |
3113 | * ... | |
3114 | * shr1: code for shr1 (text symbol) | |
3115 | * ... | |
3116 | * | |
3117 | * So the code below is trying to detect if we are in the stub | |
3118 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3119 | * and if found, do the symbolization from the real-code address | |
3120 | * rather than the stub address. | |
3121 | * | |
3122 | * Assumptions being made about the minimal symbol table: | |
3123 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3124 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3125 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3126 | * symbol (the "foo" text symbol for example) and will not |
3127 | * return the trampoline. | |
3128 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3129 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3130 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3131 | * check for the address being the same, to avoid an |
3132 | * infinite recursion. | |
3133 | */ | |
c5aa993b | 3134 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3135 | if (msymbol.minsym != NULL) |
3136 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3137 | { |
77e371c0 | 3138 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3139 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3140 | NULL); |
3141 | ||
3142 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3143 | /* I eliminated this warning since it is coming out |
3144 | * in the following situation: | |
3145 | * gdb shmain // test program with shared libraries | |
3146 | * (gdb) break shr1 // function in shared lib | |
3147 | * Warning: In stub for ... | |
9af17804 | 3148 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3149 | * so of course we can't find the real func/line info, |
3150 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3151 | * So I commented out the warning. RT */ |
3e43a32a | 3152 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3153 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3154 | ; | |
c5aa993b | 3155 | /* fall through */ |
77e371c0 TT |
3156 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3157 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3158 | /* Avoid infinite recursion */ |
c378eb4e | 3159 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3160 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3161 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3162 | ; | |
c5aa993b JM |
3163 | /* fall through */ |
3164 | else | |
77e371c0 | 3165 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3166 | } |
c906108c | 3167 | |
51abb421 PA |
3168 | symtab_and_line val; |
3169 | val.pspace = current_program_space; | |
c906108c | 3170 | |
43f3e411 DE |
3171 | cust = find_pc_sect_compunit_symtab (pc, section); |
3172 | if (cust == NULL) | |
c906108c | 3173 | { |
c378eb4e | 3174 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3175 | if (notcurrent) |
3176 | pc++; | |
3177 | val.pc = pc; | |
3178 | return val; | |
3179 | } | |
3180 | ||
43f3e411 | 3181 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3182 | |
3183 | /* Look at all the symtabs that share this blockvector. | |
3184 | They all have the same apriori range, that we found was right; | |
3185 | but they have different line tables. */ | |
3186 | ||
5accd1a0 | 3187 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3188 | { |
3189 | /* Find the best line in this symtab. */ | |
43f3e411 | 3190 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3191 | if (!l) |
c5aa993b | 3192 | continue; |
c906108c SS |
3193 | len = l->nitems; |
3194 | if (len <= 0) | |
3195 | { | |
3196 | /* I think len can be zero if the symtab lacks line numbers | |
3197 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3198 | I'm not sure which, and maybe it depends on the symbol | |
3199 | reader). */ | |
3200 | continue; | |
3201 | } | |
3202 | ||
3203 | prev = NULL; | |
c378eb4e | 3204 | item = l->item; /* Get first line info. */ |
c906108c SS |
3205 | |
3206 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3207 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3208 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3209 | alt = item; |
c906108c | 3210 | |
b926417a | 3211 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3212 | const struct linetable_entry & lhs)->bool |
3213 | { | |
b926417a | 3214 | return comp_pc < lhs.pc; |
7cbe16e9 | 3215 | }; |
c906108c | 3216 | |
7cbe16e9 SR |
3217 | struct linetable_entry *first = item; |
3218 | struct linetable_entry *last = item + len; | |
3219 | item = std::upper_bound (first, last, pc, pc_compare); | |
3220 | if (item != first) | |
3221 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3222 | |
3223 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3224 | item points at the next line. If we ran off the end of the linetable |
3225 | (pc >= start of the last line), then prev == item. If pc < start of | |
3226 | the first line, prev will not be set. */ | |
c906108c SS |
3227 | |
3228 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3229 | If so, record this file, and its best line, as best so far. Don't |
3230 | save prev if it represents the end of a function (i.e. line number | |
3231 | 0) instead of a real line. */ | |
c906108c | 3232 | |
083ae935 | 3233 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3234 | { |
3235 | best = prev; | |
43f3e411 | 3236 | best_symtab = iter_s; |
25d53da1 KB |
3237 | |
3238 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3239 | if (best_end <= best->pc) | |
3240 | best_end = 0; | |
c906108c | 3241 | } |
25d53da1 KB |
3242 | |
3243 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3244 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3245 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3246 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3247 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3248 | best_end = item->pc; |
c906108c SS |
3249 | } |
3250 | ||
3251 | if (!best_symtab) | |
3252 | { | |
e86e87f7 DJ |
3253 | /* If we didn't find any line number info, just return zeros. |
3254 | We used to return alt->line - 1 here, but that could be | |
3255 | anywhere; if we don't have line number info for this PC, | |
3256 | don't make some up. */ | |
3257 | val.pc = pc; | |
c906108c | 3258 | } |
e8717518 FF |
3259 | else if (best->line == 0) |
3260 | { | |
3261 | /* If our best fit is in a range of PC's for which no line | |
3262 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3263 | find any valid line information. */ |
e8717518 FF |
3264 | val.pc = pc; |
3265 | } | |
c906108c SS |
3266 | else |
3267 | { | |
3268 | val.symtab = best_symtab; | |
3269 | val.line = best->line; | |
3270 | val.pc = best->pc; | |
3271 | if (best_end && (!alt || best_end < alt->pc)) | |
3272 | val.end = best_end; | |
3273 | else if (alt) | |
3274 | val.end = alt->pc; | |
3275 | else | |
3276 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3277 | } | |
3278 | val.section = section; | |
3279 | return val; | |
3280 | } | |
3281 | ||
c378eb4e | 3282 | /* Backward compatibility (no section). */ |
c906108c SS |
3283 | |
3284 | struct symtab_and_line | |
fba45db2 | 3285 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3286 | { |
714835d5 | 3287 | struct obj_section *section; |
c906108c SS |
3288 | |
3289 | section = find_pc_overlay (pc); | |
3290 | if (pc_in_unmapped_range (pc, section)) | |
3291 | pc = overlay_mapped_address (pc, section); | |
3292 | return find_pc_sect_line (pc, section, notcurrent); | |
3293 | } | |
34248c3a DE |
3294 | |
3295 | /* See symtab.h. */ | |
3296 | ||
3297 | struct symtab * | |
3298 | find_pc_line_symtab (CORE_ADDR pc) | |
3299 | { | |
3300 | struct symtab_and_line sal; | |
3301 | ||
3302 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3303 | There are currently no callers that ever pass non-zero. */ | |
3304 | sal = find_pc_line (pc, 0); | |
3305 | return sal.symtab; | |
3306 | } | |
c906108c | 3307 | \f |
c906108c SS |
3308 | /* Find line number LINE in any symtab whose name is the same as |
3309 | SYMTAB. | |
3310 | ||
3311 | If found, return the symtab that contains the linetable in which it was | |
3312 | found, set *INDEX to the index in the linetable of the best entry | |
3313 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3314 | exact match. | |
3315 | ||
3316 | If not found, return NULL. */ | |
3317 | ||
50641945 | 3318 | struct symtab * |
5accd1a0 | 3319 | find_line_symtab (struct symtab *sym_tab, int line, |
433759f7 | 3320 | int *index, int *exact_match) |
c906108c | 3321 | { |
6f43c46f | 3322 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3323 | |
3324 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3325 | so far seen. */ | |
3326 | ||
3327 | int best_index; | |
3328 | struct linetable *best_linetable; | |
3329 | struct symtab *best_symtab; | |
3330 | ||
3331 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3332 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3333 | best_symtab = sym_tab; | |
f8eba3c6 | 3334 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3335 | if (best_index < 0 || !exact) |
3336 | { | |
3337 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3338 | another symtab with the same name. In the case of xcoff, |
3339 | multiple csects for one source file (produced by IBM's FORTRAN | |
3340 | compiler) produce multiple symtabs (this is unavoidable | |
3341 | assuming csects can be at arbitrary places in memory and that | |
3342 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3343 | |
3344 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3345 | or 0 if none has been seen so far. |
3346 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3347 | int best; |
3348 | ||
c906108c SS |
3349 | if (best_index >= 0) |
3350 | best = best_linetable->item[best_index].line; | |
3351 | else | |
3352 | best = 0; | |
3353 | ||
2030c079 | 3354 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3355 | { |
3356 | if (objfile->sf) | |
3357 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3358 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3359 | } |
51432cca | 3360 | |
2030c079 | 3361 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3362 | { |
b669c953 | 3363 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3364 | { |
3365 | for (symtab *s : compunit_filetabs (cu)) | |
3366 | { | |
3367 | struct linetable *l; | |
3368 | int ind; | |
3369 | ||
3370 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3371 | continue; | |
3372 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3373 | symtab_to_fullname (s)) != 0) | |
3374 | continue; | |
3375 | l = SYMTAB_LINETABLE (s); | |
3376 | ind = find_line_common (l, line, &exact, 0); | |
3377 | if (ind >= 0) | |
3378 | { | |
3379 | if (exact) | |
3380 | { | |
3381 | best_index = ind; | |
3382 | best_linetable = l; | |
3383 | best_symtab = s; | |
3384 | goto done; | |
3385 | } | |
3386 | if (best == 0 || l->item[ind].line < best) | |
3387 | { | |
3388 | best = l->item[ind].line; | |
3389 | best_index = ind; | |
3390 | best_linetable = l; | |
3391 | best_symtab = s; | |
3392 | } | |
3393 | } | |
3394 | } | |
3395 | } | |
3396 | } | |
c906108c | 3397 | } |
c5aa993b | 3398 | done: |
c906108c SS |
3399 | if (best_index < 0) |
3400 | return NULL; | |
3401 | ||
3402 | if (index) | |
3403 | *index = best_index; | |
3404 | if (exact_match) | |
3405 | *exact_match = exact; | |
3406 | ||
3407 | return best_symtab; | |
3408 | } | |
f8eba3c6 TT |
3409 | |
3410 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3411 | exactly match LINE. Returns an empty vector if there are no exact |
3412 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3413 | |
67d89901 | 3414 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3415 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3416 | struct linetable_entry **best_item) | |
3417 | { | |
c656bca5 | 3418 | int start = 0; |
67d89901 | 3419 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3420 | |
3421 | /* First, collect all the PCs that are at this line. */ | |
3422 | while (1) | |
3423 | { | |
3424 | int was_exact; | |
3425 | int idx; | |
3426 | ||
8435453b DE |
3427 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3428 | start); | |
f8eba3c6 TT |
3429 | if (idx < 0) |
3430 | break; | |
3431 | ||
3432 | if (!was_exact) | |
3433 | { | |
8435453b | 3434 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3435 | |
3436 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3437 | *best_item = item; | |
3438 | ||
3439 | break; | |
3440 | } | |
3441 | ||
67d89901 | 3442 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3443 | start = idx + 1; |
3444 | } | |
3445 | ||
3446 | return result; | |
3447 | } | |
3448 | ||
c906108c SS |
3449 | \f |
3450 | /* Set the PC value for a given source file and line number and return true. | |
3451 | Returns zero for invalid line number (and sets the PC to 0). | |
3452 | The source file is specified with a struct symtab. */ | |
3453 | ||
3454 | int | |
fba45db2 | 3455 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3456 | { |
3457 | struct linetable *l; | |
3458 | int ind; | |
3459 | ||
3460 | *pc = 0; | |
3461 | if (symtab == 0) | |
3462 | return 0; | |
3463 | ||
3464 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3465 | if (symtab != NULL) | |
3466 | { | |
8435453b | 3467 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3468 | *pc = l->item[ind].pc; |
3469 | return 1; | |
3470 | } | |
3471 | else | |
3472 | return 0; | |
3473 | } | |
3474 | ||
3475 | /* Find the range of pc values in a line. | |
3476 | Store the starting pc of the line into *STARTPTR | |
3477 | and the ending pc (start of next line) into *ENDPTR. | |
3478 | Returns 1 to indicate success. | |
3479 | Returns 0 if could not find the specified line. */ | |
3480 | ||
3481 | int | |
fba45db2 KB |
3482 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3483 | CORE_ADDR *endptr) | |
c906108c SS |
3484 | { |
3485 | CORE_ADDR startaddr; | |
3486 | struct symtab_and_line found_sal; | |
3487 | ||
3488 | startaddr = sal.pc; | |
c5aa993b | 3489 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3490 | return 0; |
3491 | ||
3492 | /* This whole function is based on address. For example, if line 10 has | |
3493 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3494 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3495 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3496 | This also insures that we never give a range like "starts at 0x134 | |
3497 | and ends at 0x12c". */ | |
3498 | ||
3499 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3500 | if (found_sal.line != sal.line) | |
3501 | { | |
3502 | /* The specified line (sal) has zero bytes. */ | |
3503 | *startptr = found_sal.pc; | |
3504 | *endptr = found_sal.pc; | |
3505 | } | |
3506 | else | |
3507 | { | |
3508 | *startptr = found_sal.pc; | |
3509 | *endptr = found_sal.end; | |
3510 | } | |
3511 | return 1; | |
3512 | } | |
3513 | ||
3514 | /* Given a line table and a line number, return the index into the line | |
3515 | table for the pc of the nearest line whose number is >= the specified one. | |
3516 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3517 | START is the index at which to start searching the line table. |
c906108c SS |
3518 | |
3519 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3520 | ||
3521 | static int | |
aa1ee363 | 3522 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3523 | int *exact_match, int start) |
c906108c | 3524 | { |
52f0bd74 AC |
3525 | int i; |
3526 | int len; | |
c906108c SS |
3527 | |
3528 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3529 | or 0 if none has been seen so far. | |
3530 | BEST_INDEX identifies the item for it. */ | |
3531 | ||
3532 | int best_index = -1; | |
3533 | int best = 0; | |
3534 | ||
b7589f7d DJ |
3535 | *exact_match = 0; |
3536 | ||
c906108c SS |
3537 | if (lineno <= 0) |
3538 | return -1; | |
3539 | if (l == 0) | |
3540 | return -1; | |
3541 | ||
3542 | len = l->nitems; | |
f8eba3c6 | 3543 | for (i = start; i < len; i++) |
c906108c | 3544 | { |
aa1ee363 | 3545 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3546 | |
3547 | if (item->line == lineno) | |
3548 | { | |
3549 | /* Return the first (lowest address) entry which matches. */ | |
3550 | *exact_match = 1; | |
3551 | return i; | |
3552 | } | |
3553 | ||
3554 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3555 | { | |
3556 | best = item->line; | |
3557 | best_index = i; | |
3558 | } | |
3559 | } | |
3560 | ||
3561 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3562 | return best_index; |
3563 | } | |
3564 | ||
3565 | int | |
fba45db2 | 3566 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3567 | { |
3568 | struct symtab_and_line sal; | |
433759f7 | 3569 | |
c906108c SS |
3570 | sal = find_pc_line (pc, 0); |
3571 | *startptr = sal.pc; | |
3572 | *endptr = sal.end; | |
3573 | return sal.symtab != 0; | |
3574 | } | |
3575 | ||
cd2bb709 PA |
3576 | /* Helper for find_function_start_sal. Does most of the work, except |
3577 | setting the sal's symbol. */ | |
aab2f208 | 3578 | |
cd2bb709 PA |
3579 | static symtab_and_line |
3580 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3581 | bool funfirstline) | |
aab2f208 | 3582 | { |
42ddae10 | 3583 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3584 | |
6e22494e JK |
3585 | if (funfirstline && sal.symtab != NULL |
3586 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3587 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3588 | { | |
42ddae10 | 3589 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3590 | |
42ddae10 | 3591 | sal.pc = func_addr; |
141c5cc4 JK |
3592 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3593 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3594 | return sal; |
3595 | } | |
3596 | ||
aab2f208 | 3597 | /* We always should have a line for the function start address. |
42ddae10 | 3598 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3599 | just the PC and hope that skip_prologue_sal (if requested) |
3600 | can find a line number for after the prologue. */ | |
42ddae10 | 3601 | if (sal.pc < func_addr) |
aab2f208 | 3602 | { |
51abb421 | 3603 | sal = {}; |
aab2f208 | 3604 | sal.pspace = current_program_space; |
42ddae10 | 3605 | sal.pc = func_addr; |
08be3fe3 | 3606 | sal.section = section; |
aab2f208 DE |
3607 | } |
3608 | ||
3609 | if (funfirstline) | |
3610 | skip_prologue_sal (&sal); | |
3611 | ||
3612 | return sal; | |
3613 | } | |
3614 | ||
42ddae10 PA |
3615 | /* See symtab.h. */ |
3616 | ||
cd2bb709 PA |
3617 | symtab_and_line |
3618 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3619 | bool funfirstline) | |
3620 | { | |
3621 | symtab_and_line sal | |
3622 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3623 | ||
3624 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3625 | the symtab and linenumber, but not a symbol. Fill in the | |
3626 | function symbol too. */ | |
3627 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3628 | ||
3629 | return sal; | |
3630 | } | |
3631 | ||
3632 | /* See symtab.h. */ | |
3633 | ||
42ddae10 PA |
3634 | symtab_and_line |
3635 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3636 | { | |
3637 | fixup_symbol_section (sym, NULL); | |
3638 | symtab_and_line sal | |
2b1ffcfd | 3639 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3640 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3641 | funfirstline); | |
42ddae10 PA |
3642 | sal.symbol = sym; |
3643 | return sal; | |
3644 | } | |
3645 | ||
3646 | ||
8c7a1ee8 EZ |
3647 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3648 | address for that function that has an entry in SYMTAB's line info | |
3649 | table. If such an entry cannot be found, return FUNC_ADDR | |
3650 | unaltered. */ | |
eca864fe | 3651 | |
70221824 | 3652 | static CORE_ADDR |
8c7a1ee8 EZ |
3653 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3654 | { | |
3655 | CORE_ADDR func_start, func_end; | |
3656 | struct linetable *l; | |
952a6d41 | 3657 | int i; |
8c7a1ee8 EZ |
3658 | |
3659 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3660 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3661 | if (l == NULL) |
3662 | return func_addr; | |
3663 | ||
3664 | /* Get the range for the function's PC values, or give up if we | |
3665 | cannot, for some reason. */ | |
3666 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3667 | return func_addr; | |
3668 | ||
3669 | /* Linetable entries are ordered by PC values, see the commentary in | |
3670 | symtab.h where `struct linetable' is defined. Thus, the first | |
3671 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3672 | address we are looking for. */ | |
3673 | for (i = 0; i < l->nitems; i++) | |
3674 | { | |
3675 | struct linetable_entry *item = &(l->item[i]); | |
3676 | ||
3677 | /* Don't use line numbers of zero, they mark special entries in | |
3678 | the table. See the commentary on symtab.h before the | |
3679 | definition of struct linetable. */ | |
3680 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3681 | return item->pc; | |
3682 | } | |
3683 | ||
3684 | return func_addr; | |
3685 | } | |
3686 | ||
059acae7 UW |
3687 | /* Adjust SAL to the first instruction past the function prologue. |
3688 | If the PC was explicitly specified, the SAL is not changed. | |
3689 | If the line number was explicitly specified, at most the SAL's PC | |
3690 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3691 | |
059acae7 UW |
3692 | void |
3693 | skip_prologue_sal (struct symtab_and_line *sal) | |
3694 | { | |
3695 | struct symbol *sym; | |
3696 | struct symtab_and_line start_sal; | |
8be455d7 | 3697 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3698 | struct obj_section *section; |
3699 | const char *name; | |
3700 | struct objfile *objfile; | |
3701 | struct gdbarch *gdbarch; | |
3977b71f | 3702 | const struct block *b, *function_block; |
8be455d7 | 3703 | int force_skip, skip; |
c906108c | 3704 | |
a4b411d6 | 3705 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3706 | if (sal->explicit_pc) |
3707 | return; | |
6c95b8df | 3708 | |
5ed8105e PA |
3709 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3710 | ||
059acae7 | 3711 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3712 | |
059acae7 UW |
3713 | sym = find_pc_sect_function (sal->pc, sal->section); |
3714 | if (sym != NULL) | |
bccdca4a | 3715 | { |
059acae7 UW |
3716 | fixup_symbol_section (sym, NULL); |
3717 | ||
08be3fe3 | 3718 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3719 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3720 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3721 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3722 | } |
059acae7 UW |
3723 | else |
3724 | { | |
7c7b6655 TT |
3725 | struct bound_minimal_symbol msymbol |
3726 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3727 | |
7c7b6655 | 3728 | if (msymbol.minsym == NULL) |
5ed8105e | 3729 | return; |
059acae7 | 3730 | |
7c7b6655 | 3731 | objfile = msymbol.objfile; |
77e371c0 | 3732 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3733 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3734 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3735 | } |
3736 | ||
3737 | gdbarch = get_objfile_arch (objfile); | |
3738 | ||
8be455d7 JK |
3739 | /* Process the prologue in two passes. In the first pass try to skip the |
3740 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3741 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3742 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3743 | |
8be455d7 JK |
3744 | skip = 1; |
3745 | force_skip = 1; | |
059acae7 | 3746 | |
8be455d7 JK |
3747 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3748 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3749 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3750 | if (sym != NULL |
3751 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3752 | force_skip = 0; |
059acae7 | 3753 | |
8be455d7 JK |
3754 | saved_pc = pc; |
3755 | do | |
c906108c | 3756 | { |
8be455d7 | 3757 | pc = saved_pc; |
4309257c | 3758 | |
8be455d7 JK |
3759 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3760 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3761 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3762 | pc = overlay_unmapped_address (pc, section); | |
3763 | ||
3764 | /* Skip "first line" of function (which is actually its prologue). */ | |
3765 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3766 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3767 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3768 | if (skip) |
46a62268 | 3769 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3770 | |
3771 | /* For overlays, map pc back into its mapped VMA range. */ | |
3772 | pc = overlay_mapped_address (pc, section); | |
3773 | ||
3774 | /* Calculate line number. */ | |
059acae7 | 3775 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3776 | |
3777 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3778 | line is still part of the same function. */ | |
3779 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3780 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3781 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3782 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3783 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3784 | { |
3785 | /* First pc of next line */ | |
3786 | pc = start_sal.end; | |
3787 | /* Recalculate the line number (might not be N+1). */ | |
3788 | start_sal = find_pc_sect_line (pc, section, 0); | |
3789 | } | |
3790 | ||
3791 | /* On targets with executable formats that don't have a concept of | |
3792 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3793 | to `__main' in `main' between the prologue and before user | |
3794 | code. */ | |
3795 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3796 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3797 | { |
3798 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3799 | /* Recalculate the line number (might not be N+1). */ | |
3800 | start_sal = find_pc_sect_line (pc, section, 0); | |
3801 | force_skip = 1; | |
3802 | } | |
4309257c | 3803 | } |
8be455d7 | 3804 | while (!force_skip && skip--); |
4309257c | 3805 | |
8c7a1ee8 EZ |
3806 | /* If we still don't have a valid source line, try to find the first |
3807 | PC in the lineinfo table that belongs to the same function. This | |
3808 | happens with COFF debug info, which does not seem to have an | |
3809 | entry in lineinfo table for the code after the prologue which has | |
3810 | no direct relation to source. For example, this was found to be | |
3811 | the case with the DJGPP target using "gcc -gcoff" when the | |
3812 | compiler inserted code after the prologue to make sure the stack | |
3813 | is aligned. */ | |
8be455d7 | 3814 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3815 | { |
08be3fe3 | 3816 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3817 | /* Recalculate the line number. */ |
059acae7 | 3818 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3819 | } |
3820 | ||
059acae7 UW |
3821 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3822 | forward SAL to the end of the prologue. */ | |
3823 | if (sal->pc >= pc) | |
3824 | return; | |
3825 | ||
3826 | sal->pc = pc; | |
3827 | sal->section = section; | |
3828 | ||
3829 | /* Unless the explicit_line flag was set, update the SAL line | |
3830 | and symtab to correspond to the modified PC location. */ | |
3831 | if (sal->explicit_line) | |
3832 | return; | |
3833 | ||
3834 | sal->symtab = start_sal.symtab; | |
3835 | sal->line = start_sal.line; | |
3836 | sal->end = start_sal.end; | |
c906108c | 3837 | |
edb3359d DJ |
3838 | /* Check if we are now inside an inlined function. If we can, |
3839 | use the call site of the function instead. */ | |
059acae7 | 3840 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3841 | function_block = NULL; |
3842 | while (b != NULL) | |
3843 | { | |
3844 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3845 | function_block = b; | |
3846 | else if (BLOCK_FUNCTION (b) != NULL) | |
3847 | break; | |
3848 | b = BLOCK_SUPERBLOCK (b); | |
3849 | } | |
3850 | if (function_block != NULL | |
3851 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3852 | { | |
059acae7 | 3853 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3854 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3855 | } |
c906108c | 3856 | } |
50641945 | 3857 | |
f1f58506 DE |
3858 | /* Given PC at the function's start address, attempt to find the |
3859 | prologue end using SAL information. Return zero if the skip fails. | |
3860 | ||
3861 | A non-optimized prologue traditionally has one SAL for the function | |
3862 | and a second for the function body. A single line function has | |
3863 | them both pointing at the same line. | |
3864 | ||
3865 | An optimized prologue is similar but the prologue may contain | |
3866 | instructions (SALs) from the instruction body. Need to skip those | |
3867 | while not getting into the function body. | |
3868 | ||
3869 | The functions end point and an increasing SAL line are used as | |
3870 | indicators of the prologue's endpoint. | |
3871 | ||
3872 | This code is based on the function refine_prologue_limit | |
3873 | (found in ia64). */ | |
3874 | ||
3875 | CORE_ADDR | |
3876 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3877 | { | |
3878 | struct symtab_and_line prologue_sal; | |
3879 | CORE_ADDR start_pc; | |
3880 | CORE_ADDR end_pc; | |
3881 | const struct block *bl; | |
3882 | ||
3883 | /* Get an initial range for the function. */ | |
3884 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3885 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3886 | ||
3887 | prologue_sal = find_pc_line (start_pc, 0); | |
3888 | if (prologue_sal.line != 0) | |
3889 | { | |
3890 | /* For languages other than assembly, treat two consecutive line | |
3891 | entries at the same address as a zero-instruction prologue. | |
3892 | The GNU assembler emits separate line notes for each instruction | |
3893 | in a multi-instruction macro, but compilers generally will not | |
3894 | do this. */ | |
3895 | if (prologue_sal.symtab->language != language_asm) | |
3896 | { | |
8435453b | 3897 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3898 | int idx = 0; |
3899 | ||
3900 | /* Skip any earlier lines, and any end-of-sequence marker | |
3901 | from a previous function. */ | |
3902 | while (linetable->item[idx].pc != prologue_sal.pc | |
3903 | || linetable->item[idx].line == 0) | |
3904 | idx++; | |
3905 | ||
3906 | if (idx+1 < linetable->nitems | |
3907 | && linetable->item[idx+1].line != 0 | |
3908 | && linetable->item[idx+1].pc == start_pc) | |
3909 | return start_pc; | |
3910 | } | |
3911 | ||
3912 | /* If there is only one sal that covers the entire function, | |
3913 | then it is probably a single line function, like | |
3914 | "foo(){}". */ | |
3915 | if (prologue_sal.end >= end_pc) | |
3916 | return 0; | |
3917 | ||
3918 | while (prologue_sal.end < end_pc) | |
3919 | { | |
3920 | struct symtab_and_line sal; | |
3921 | ||
3922 | sal = find_pc_line (prologue_sal.end, 0); | |
3923 | if (sal.line == 0) | |
3924 | break; | |
3925 | /* Assume that a consecutive SAL for the same (or larger) | |
3926 | line mark the prologue -> body transition. */ | |
3927 | if (sal.line >= prologue_sal.line) | |
3928 | break; | |
3929 | /* Likewise if we are in a different symtab altogether | |
3930 | (e.g. within a file included via #include). */ | |
3931 | if (sal.symtab != prologue_sal.symtab) | |
3932 | break; | |
3933 | ||
3934 | /* The line number is smaller. Check that it's from the | |
3935 | same function, not something inlined. If it's inlined, | |
3936 | then there is no point comparing the line numbers. */ | |
3937 | bl = block_for_pc (prologue_sal.end); | |
3938 | while (bl) | |
3939 | { | |
3940 | if (block_inlined_p (bl)) | |
3941 | break; | |
3942 | if (BLOCK_FUNCTION (bl)) | |
3943 | { | |
3944 | bl = NULL; | |
3945 | break; | |
3946 | } | |
3947 | bl = BLOCK_SUPERBLOCK (bl); | |
3948 | } | |
3949 | if (bl != NULL) | |
3950 | break; | |
3951 | ||
3952 | /* The case in which compiler's optimizer/scheduler has | |
3953 | moved instructions into the prologue. We look ahead in | |
3954 | the function looking for address ranges whose | |
3955 | corresponding line number is less the first one that we | |
3956 | found for the function. This is more conservative then | |
3957 | refine_prologue_limit which scans a large number of SALs | |
3958 | looking for any in the prologue. */ | |
3959 | prologue_sal = sal; | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | if (prologue_sal.end < end_pc) | |
3964 | /* Return the end of this line, or zero if we could not find a | |
3965 | line. */ | |
3966 | return prologue_sal.end; | |
3967 | else | |
3968 | /* Don't return END_PC, which is past the end of the function. */ | |
3969 | return prologue_sal.pc; | |
3970 | } | |
bf223d3e PA |
3971 | |
3972 | /* See symtab.h. */ | |
3973 | ||
3974 | symbol * | |
3975 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3976 | { | |
4024cf2b PA |
3977 | CORE_ADDR func_addr; |
3978 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3979 | return NULL; |
3980 | ||
4024cf2b | 3981 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3982 | if (sym != NULL |
3983 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3984 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3985 | return sym; |
3986 | ||
3987 | return NULL; | |
3988 | } | |
3989 | ||
f1f58506 | 3990 | \f |
c906108c SS |
3991 | /* If P is of the form "operator[ \t]+..." where `...' is |
3992 | some legitimate operator text, return a pointer to the | |
3993 | beginning of the substring of the operator text. | |
3994 | Otherwise, return "". */ | |
eca864fe | 3995 | |
96142726 TT |
3996 | static const char * |
3997 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3998 | { |
3999 | *end = ""; | |
8090b426 | 4000 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 4001 | return *end; |
8090b426 | 4002 | p += CP_OPERATOR_LEN; |
c906108c SS |
4003 | |
4004 | /* Don't get faked out by `operator' being part of a longer | |
4005 | identifier. */ | |
c5aa993b | 4006 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4007 | return *end; |
4008 | ||
4009 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4010 | while (*p == ' ' || *p == '\t') | |
4011 | p++; | |
4012 | ||
c378eb4e | 4013 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4014 | |
c5aa993b | 4015 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4016 | { |
96142726 | 4017 | const char *q = p + 1; |
433759f7 | 4018 | |
c5aa993b | 4019 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4020 | q++; |
4021 | *end = q; | |
4022 | return p; | |
4023 | } | |
4024 | ||
53e8ad3d MS |
4025 | while (*p) |
4026 | switch (*p) | |
4027 | { | |
4028 | case '\\': /* regexp quoting */ | |
4029 | if (p[1] == '*') | |
4030 | { | |
3e43a32a | 4031 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4032 | *end = p + 3; |
4033 | else /* 'operator\*' */ | |
4034 | *end = p + 2; | |
4035 | return p; | |
4036 | } | |
4037 | else if (p[1] == '[') | |
4038 | { | |
4039 | if (p[2] == ']') | |
3e43a32a MS |
4040 | error (_("mismatched quoting on brackets, " |
4041 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4042 | else if (p[2] == '\\' && p[3] == ']') |
4043 | { | |
4044 | *end = p + 4; /* 'operator\[\]' */ | |
4045 | return p; | |
4046 | } | |
4047 | else | |
8a3fe4f8 | 4048 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4049 | } |
9af17804 | 4050 | else |
53e8ad3d | 4051 | { |
c378eb4e | 4052 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
4053 | p++; |
4054 | continue; | |
4055 | } | |
4056 | break; | |
4057 | case '!': | |
4058 | case '=': | |
4059 | case '*': | |
4060 | case '/': | |
4061 | case '%': | |
4062 | case '^': | |
4063 | if (p[1] == '=') | |
4064 | *end = p + 2; | |
4065 | else | |
4066 | *end = p + 1; | |
4067 | return p; | |
4068 | case '<': | |
4069 | case '>': | |
4070 | case '+': | |
4071 | case '-': | |
4072 | case '&': | |
4073 | case '|': | |
4074 | if (p[0] == '-' && p[1] == '>') | |
4075 | { | |
c378eb4e | 4076 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4077 | if (p[2] == '*') |
4078 | { | |
4079 | *end = p + 3; /* 'operator->*' */ | |
4080 | return p; | |
4081 | } | |
4082 | else if (p[2] == '\\') | |
4083 | { | |
4084 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4085 | return p; | |
4086 | } | |
4087 | else | |
4088 | { | |
4089 | *end = p + 2; /* 'operator->' */ | |
4090 | return p; | |
4091 | } | |
4092 | } | |
4093 | if (p[1] == '=' || p[1] == p[0]) | |
4094 | *end = p + 2; | |
4095 | else | |
4096 | *end = p + 1; | |
4097 | return p; | |
4098 | case '~': | |
4099 | case ',': | |
c5aa993b | 4100 | *end = p + 1; |
53e8ad3d MS |
4101 | return p; |
4102 | case '(': | |
4103 | if (p[1] != ')') | |
3e43a32a MS |
4104 | error (_("`operator ()' must be specified " |
4105 | "without whitespace in `()'")); | |
c5aa993b | 4106 | *end = p + 2; |
53e8ad3d MS |
4107 | return p; |
4108 | case '?': | |
4109 | if (p[1] != ':') | |
3e43a32a MS |
4110 | error (_("`operator ?:' must be specified " |
4111 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4112 | *end = p + 2; |
4113 | return p; | |
4114 | case '[': | |
4115 | if (p[1] != ']') | |
3e43a32a MS |
4116 | error (_("`operator []' must be specified " |
4117 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4118 | *end = p + 2; |
4119 | return p; | |
4120 | default: | |
8a3fe4f8 | 4121 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4122 | break; |
4123 | } | |
4124 | ||
c906108c SS |
4125 | *end = ""; |
4126 | return *end; | |
4127 | } | |
c906108c | 4128 | \f |
c5aa993b | 4129 | |
9fdc877b DE |
4130 | /* Data structure to maintain printing state for output_source_filename. */ |
4131 | ||
4132 | struct output_source_filename_data | |
4133 | { | |
4134 | /* Cache of what we've seen so far. */ | |
4135 | struct filename_seen_cache *filename_seen_cache; | |
4136 | ||
4137 | /* Flag of whether we're printing the first one. */ | |
4138 | int first; | |
4139 | }; | |
4140 | ||
c94fdfd0 | 4141 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4142 | NAME is the name to print. |
4143 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4144 | |
c94fdfd0 | 4145 | static void |
9fdc877b DE |
4146 | output_source_filename (const char *name, |
4147 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4148 | { |
4149 | /* Since a single source file can result in several partial symbol | |
4150 | tables, we need to avoid printing it more than once. Note: if | |
4151 | some of the psymtabs are read in and some are not, it gets | |
4152 | printed both under "Source files for which symbols have been | |
4153 | read" and "Source files for which symbols will be read in on | |
4154 | demand". I consider this a reasonable way to deal with the | |
4155 | situation. I'm not sure whether this can also happen for | |
4156 | symtabs; it doesn't hurt to check. */ | |
4157 | ||
4158 | /* Was NAME already seen? */ | |
bbf2f4df | 4159 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4160 | { |
4161 | /* Yes; don't print it again. */ | |
4162 | return; | |
4163 | } | |
9fdc877b | 4164 | |
c94fdfd0 | 4165 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
4166 | if (! data->first) |
4167 | printf_filtered (", "); | |
4168 | data->first = 0; | |
c906108c SS |
4169 | |
4170 | wrap_here (""); | |
4171 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 4172 | } |
c906108c | 4173 | |
ccefe4c4 | 4174 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4175 | |
ccefe4c4 | 4176 | static void |
533a737e | 4177 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4178 | void *data) |
4179 | { | |
19ba03f4 SM |
4180 | output_source_filename (fullname ? fullname : filename, |
4181 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4182 | } |
4183 | ||
c906108c | 4184 | static void |
1d12d88f | 4185 | info_sources_command (const char *ignore, int from_tty) |
c906108c | 4186 | { |
9fdc877b | 4187 | struct output_source_filename_data data; |
c5aa993b | 4188 | |
c906108c SS |
4189 | if (!have_full_symbols () && !have_partial_symbols ()) |
4190 | { | |
8a3fe4f8 | 4191 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4192 | } |
c5aa993b | 4193 | |
bbf2f4df PA |
4194 | filename_seen_cache filenames_seen; |
4195 | ||
4196 | data.filename_seen_cache = &filenames_seen; | |
9fdc877b | 4197 | |
c906108c SS |
4198 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
4199 | ||
9fdc877b | 4200 | data.first = 1; |
2030c079 | 4201 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4202 | { |
b669c953 | 4203 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4204 | { |
4205 | for (symtab *s : compunit_filetabs (cu)) | |
4206 | { | |
4207 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4208 | |
8b31193a TT |
4209 | output_source_filename (fullname, &data); |
4210 | } | |
4211 | } | |
4212 | } | |
c906108c | 4213 | printf_filtered ("\n\n"); |
c5aa993b | 4214 | |
3e43a32a MS |
4215 | printf_filtered ("Source files for which symbols " |
4216 | "will be read in on demand:\n\n"); | |
c906108c | 4217 | |
bbf2f4df | 4218 | filenames_seen.clear (); |
9fdc877b | 4219 | data.first = 1; |
bb4142cf DE |
4220 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4221 | 1 /*need_fullname*/); | |
c906108c SS |
4222 | printf_filtered ("\n"); |
4223 | } | |
4224 | ||
fbd9ab74 JK |
4225 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4226 | non-zero compare only lbasename of FILES. */ | |
4227 | ||
c906108c | 4228 | static int |
96142726 | 4229 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4230 | { |
4231 | int i; | |
4232 | ||
4233 | if (file != NULL && nfiles != 0) | |
4234 | { | |
4235 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4236 | { |
fbd9ab74 JK |
4237 | if (compare_filenames_for_search (file, (basenames |
4238 | ? lbasename (files[i]) | |
4239 | : files[i]))) | |
c5aa993b JM |
4240 | return 1; |
4241 | } | |
c906108c SS |
4242 | } |
4243 | else if (nfiles == 0) | |
4244 | return 1; | |
4245 | return 0; | |
4246 | } | |
4247 | ||
b52109bc | 4248 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4249 | sort symbols, not minimal symbols. */ |
eca864fe | 4250 | |
b9c04fb2 TT |
4251 | int |
4252 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4253 | const symbol_search &sym_b) | |
434d2d4f | 4254 | { |
b52109bc DE |
4255 | int c; |
4256 | ||
b9c04fb2 TT |
4257 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4258 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4259 | if (c != 0) |
4260 | return c; | |
434d2d4f | 4261 | |
b9c04fb2 TT |
4262 | if (sym_a.block != sym_b.block) |
4263 | return sym_a.block - sym_b.block; | |
b52109bc | 4264 | |
b9c04fb2 TT |
4265 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4266 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4267 | } |
4268 | ||
12615cba PW |
4269 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4270 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4271 | ||
4272 | bool | |
4273 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4274 | const struct symbol *sym) | |
4275 | { | |
4276 | struct type *sym_type; | |
4277 | std::string printed_sym_type_name; | |
4278 | ||
4279 | if (symbol_lookup_debug > 1) | |
4280 | { | |
4281 | fprintf_unfiltered (gdb_stdlog, | |
4282 | "treg_matches_sym_type_name\n sym %s\n", | |
4283 | SYMBOL_NATURAL_NAME (sym)); | |
4284 | } | |
4285 | ||
4286 | sym_type = SYMBOL_TYPE (sym); | |
4287 | if (sym_type == NULL) | |
4288 | return false; | |
4289 | ||
43d397ca PW |
4290 | { |
4291 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4292 | |
12615cba | 4293 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4294 | } |
4295 | ||
12615cba PW |
4296 | |
4297 | if (symbol_lookup_debug > 1) | |
4298 | { | |
4299 | fprintf_unfiltered (gdb_stdlog, | |
4300 | " sym_type_name %s\n", | |
4301 | printed_sym_type_name.c_str ()); | |
4302 | } | |
4303 | ||
4304 | ||
4305 | if (printed_sym_type_name.empty ()) | |
4306 | return false; | |
4307 | ||
4308 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4309 | } | |
4310 | ||
4311 | ||
b9c04fb2 | 4312 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4313 | |
4314 | static void | |
b9c04fb2 | 4315 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4316 | { |
b9c04fb2 TT |
4317 | std::sort (result->begin (), result->end ()); |
4318 | result->erase (std::unique (result->begin (), result->end ()), | |
4319 | result->end ()); | |
434d2d4f | 4320 | } |
5bd98722 | 4321 | |
c906108c | 4322 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4323 | returning the results. |
c906108c SS |
4324 | |
4325 | Only symbols of KIND are searched: | |
e8930875 | 4326 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4327 | and constants (enums). |
4328 | if T_REGEXP is not NULL, only returns var that have | |
4329 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4330 | FUNCTIONS_DOMAIN - search all functions |
4331 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4332 | ALL_DOMAIN - an internal error for this function |
c906108c | 4333 | |
b52109bc DE |
4334 | Within each file the results are sorted locally; each symtab's global and |
4335 | static blocks are separately alphabetized. | |
4336 | Duplicate entries are removed. */ | |
c378eb4e | 4337 | |
b9c04fb2 | 4338 | std::vector<symbol_search> |
96142726 | 4339 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4340 | const char *t_regexp, |
b9c04fb2 | 4341 | int nfiles, const char *files[]) |
c906108c | 4342 | { |
346d1dfe | 4343 | const struct blockvector *bv; |
52f0bd74 AC |
4344 | struct block *b; |
4345 | int i = 0; | |
8157b174 | 4346 | struct block_iterator iter; |
52f0bd74 | 4347 | struct symbol *sym; |
c906108c | 4348 | int found_misc = 0; |
bc043ef3 | 4349 | static const enum minimal_symbol_type types[] |
e8930875 | 4350 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 4351 | static const enum minimal_symbol_type types2[] |
e8930875 | 4352 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 4353 | static const enum minimal_symbol_type types3[] |
e8930875 | 4354 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 4355 | static const enum minimal_symbol_type types4[] |
e8930875 | 4356 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
4357 | enum minimal_symbol_type ourtype; |
4358 | enum minimal_symbol_type ourtype2; | |
4359 | enum minimal_symbol_type ourtype3; | |
4360 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4361 | std::vector<symbol_search> result; |
2d7cc5c7 | 4362 | gdb::optional<compiled_regex> preg; |
12615cba | 4363 | gdb::optional<compiled_regex> treg; |
c906108c | 4364 | |
e8930875 JK |
4365 | gdb_assert (kind <= TYPES_DOMAIN); |
4366 | ||
8903c50d TT |
4367 | ourtype = types[kind]; |
4368 | ourtype2 = types2[kind]; | |
4369 | ourtype3 = types3[kind]; | |
4370 | ourtype4 = types4[kind]; | |
c906108c | 4371 | |
c906108c SS |
4372 | if (regexp != NULL) |
4373 | { | |
4374 | /* Make sure spacing is right for C++ operators. | |
4375 | This is just a courtesy to make the matching less sensitive | |
4376 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4377 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4378 | const char *opend; |
4379 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4380 | |
c906108c | 4381 | if (*opname) |
c5aa993b | 4382 | { |
3e43a32a MS |
4383 | int fix = -1; /* -1 means ok; otherwise number of |
4384 | spaces needed. */ | |
433759f7 | 4385 | |
c5aa993b JM |
4386 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4387 | { | |
c378eb4e | 4388 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4389 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4390 | fix = 1; | |
4391 | } | |
4392 | else | |
4393 | { | |
c378eb4e | 4394 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4395 | if (opname[-1] == ' ') |
4396 | fix = 0; | |
4397 | } | |
c378eb4e | 4398 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4399 | if (fix >= 0) |
4400 | { | |
045f55a6 | 4401 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4402 | |
c5aa993b JM |
4403 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4404 | regexp = tmp; | |
4405 | } | |
4406 | } | |
4407 | ||
2d7cc5c7 PA |
4408 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4409 | ? REG_ICASE : 0); | |
4410 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4411 | } |
4412 | ||
12615cba PW |
4413 | if (t_regexp != NULL) |
4414 | { | |
4415 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4416 | ? REG_ICASE : 0); | |
4417 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4418 | } | |
4419 | ||
c906108c SS |
4420 | /* Search through the partial symtabs *first* for all symbols |
4421 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4422 | the machinery below. */ |
14bc53a8 PA |
4423 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4424 | { | |
4425 | return file_matches (filename, files, nfiles, | |
4426 | basenames); | |
4427 | }, | |
b5ec771e | 4428 | lookup_name_info::match_any (), |
14bc53a8 PA |
4429 | [&] (const char *symname) |
4430 | { | |
12615cba PW |
4431 | return (!preg.has_value () |
4432 | || preg->exec (symname, | |
4433 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4434 | }, |
4435 | NULL, | |
4436 | kind); | |
c906108c SS |
4437 | |
4438 | /* Here, we search through the minimal symbol tables for functions | |
4439 | and variables that match, and force their symbols to be read. | |
4440 | This is in particular necessary for demangled variable names, | |
4441 | which are no longer put into the partial symbol tables. | |
4442 | The symbol will then be found during the scan of symtabs below. | |
4443 | ||
4444 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4445 | for the function, for variables we have to call |
4446 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4447 | has debug info. | |
c906108c | 4448 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4449 | any matching symbols without debug info. |
4450 | We only search the objfile the msymbol came from, we no longer search | |
4451 | all objfiles. In large programs (1000s of shared libs) searching all | |
4452 | objfiles is not worth the pain. */ | |
c906108c | 4453 | |
176620f1 | 4454 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4455 | { |
2030c079 | 4456 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4457 | { |
7932255d | 4458 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4459 | { |
4460 | QUIT; | |
89295b4d | 4461 | |
5325b9bf TT |
4462 | if (msymbol->created_by_gdb) |
4463 | continue; | |
422d65e7 | 4464 | |
5325b9bf TT |
4465 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4466 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4467 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4468 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4469 | { | |
4470 | if (!preg.has_value () | |
4471 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4472 | NULL, 0) == 0) | |
4473 | { | |
4474 | /* Note: An important side-effect of these | |
4475 | lookup functions is to expand the symbol | |
4476 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4477 | the next loop on compunits. */ |
5325b9bf TT |
4478 | if (kind == FUNCTIONS_DOMAIN |
4479 | ? (find_pc_compunit_symtab | |
4480 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4481 | == NULL) | |
4482 | : (lookup_symbol_in_objfile_from_linkage_name | |
4483 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4484 | VAR_DOMAIN) | |
4485 | .symbol == NULL)) | |
4486 | found_misc = 1; | |
4487 | } | |
4488 | } | |
4489 | } | |
4490 | } | |
c906108c SS |
4491 | } |
4492 | ||
2030c079 | 4493 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4494 | { |
b669c953 | 4495 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4496 | { |
4497 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4498 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4499 | { | |
4500 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4501 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4502 | { | |
4503 | struct symtab *real_symtab = symbol_symtab (sym); | |
4504 | ||
4505 | QUIT; | |
4506 | ||
4507 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4508 | not need to be a substring of symtab_to_fullname as | |
4509 | it may contain "./" etc. */ | |
4510 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4511 | || ((basenames_may_differ | |
4512 | || file_matches (lbasename (real_symtab->filename), | |
4513 | files, nfiles, 1)) | |
4514 | && file_matches (symtab_to_fullname (real_symtab), | |
4515 | files, nfiles, 0))) | |
4516 | && ((!preg.has_value () | |
4517 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4518 | NULL, 0) == 0) | |
4519 | && ((kind == VARIABLES_DOMAIN | |
4520 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4521 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4522 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4523 | /* LOC_CONST can be used for more than | |
4524 | just enums, e.g., c++ static const | |
4525 | members. We only want to skip enums | |
4526 | here. */ | |
4527 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4528 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4529 | == TYPE_CODE_ENUM)) | |
4530 | && (!treg.has_value () | |
4531 | || treg_matches_sym_type_name (*treg, sym))) | |
4532 | || (kind == FUNCTIONS_DOMAIN | |
4533 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4534 | && (!treg.has_value () | |
4535 | || treg_matches_sym_type_name (*treg, | |
4536 | sym))) | |
4537 | || (kind == TYPES_DOMAIN | |
4538 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4539 | { | |
4540 | /* match */ | |
4541 | result.emplace_back (i, sym); | |
4542 | } | |
4543 | } | |
4544 | } | |
4545 | } | |
4546 | } | |
c906108c | 4547 | |
b9c04fb2 TT |
4548 | if (!result.empty ()) |
4549 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4550 | |
c906108c | 4551 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4552 | no debug symbols, then add matching minsyms. But if the user wants |
4553 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4554 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4555 | |
a8462bbf PW |
4556 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4557 | && !treg.has_value ()) | |
c906108c | 4558 | { |
2030c079 | 4559 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4560 | { |
7932255d | 4561 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4562 | { |
4563 | QUIT; | |
89295b4d | 4564 | |
5325b9bf TT |
4565 | if (msymbol->created_by_gdb) |
4566 | continue; | |
422d65e7 | 4567 | |
5325b9bf TT |
4568 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4569 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4570 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4571 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4572 | { | |
4573 | if (!preg.has_value () | |
4574 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4575 | NULL, 0) == 0) | |
4576 | { | |
4577 | /* For functions we can do a quick check of whether the | |
4578 | symbol might be found via find_pc_symtab. */ | |
4579 | if (kind != FUNCTIONS_DOMAIN | |
4580 | || (find_pc_compunit_symtab | |
4581 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4582 | == NULL)) | |
4583 | { | |
4584 | if (lookup_symbol_in_objfile_from_linkage_name | |
4585 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4586 | VAR_DOMAIN) | |
4587 | .symbol == NULL) | |
4588 | { | |
4589 | /* match */ | |
4590 | result.emplace_back (i, msymbol, objfile); | |
4591 | } | |
4592 | } | |
4593 | } | |
4594 | } | |
4595 | } | |
4596 | } | |
c906108c SS |
4597 | } |
4598 | ||
b9c04fb2 | 4599 | return result; |
c906108c SS |
4600 | } |
4601 | ||
4602 | /* Helper function for symtab_symbol_info, this function uses | |
4603 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4604 | regarding the match to gdb_stdout. If LAST is not NULL, |
4605 | print file and line number information for the symbol as | |
4606 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4607 | |
c906108c | 4608 | static void |
8903c50d | 4609 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4610 | struct symbol *sym, |
05cba821 | 4611 | int block, const char *last) |
c906108c | 4612 | { |
43d397ca | 4613 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4614 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4615 | |
c7dcbf88 | 4616 | if (last != NULL) |
c906108c | 4617 | { |
c7dcbf88 | 4618 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4619 | |
c7dcbf88 AA |
4620 | if (filename_cmp (last, s_filename) != 0) |
4621 | { | |
4622 | fputs_filtered ("\nFile ", gdb_stdout); | |
4623 | fputs_filtered (s_filename, gdb_stdout); | |
4624 | fputs_filtered (":\n", gdb_stdout); | |
4625 | } | |
4626 | ||
4627 | if (SYMBOL_LINE (sym) != 0) | |
4628 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4629 | else | |
4630 | puts_filtered ("\t"); | |
4631 | } | |
b744723f | 4632 | |
176620f1 | 4633 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4634 | printf_filtered ("static "); |
c5aa993b | 4635 | |
c378eb4e | 4636 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4637 | if (kind == TYPES_DOMAIN |
4638 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 4639 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4640 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4641 | else if (kind < TYPES_DOMAIN |
4642 | || (kind == TYPES_DOMAIN | |
4643 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4644 | { |
4645 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4646 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4647 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4648 | gdb_stdout, 0); |
c906108c SS |
4649 | |
4650 | printf_filtered (";\n"); | |
4651 | } | |
c906108c SS |
4652 | } |
4653 | ||
4654 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4655 | for non-debugging symbols to gdb_stdout. */ |
4656 | ||
c906108c | 4657 | static void |
7c7b6655 | 4658 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4659 | { |
7c7b6655 | 4660 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4661 | char *tmp; |
4662 | ||
d80b854b | 4663 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4664 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4665 | & (CORE_ADDR) 0xffffffff, |
4666 | 8); | |
3ac4495a | 4667 | else |
77e371c0 | 4668 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4669 | 16); |
3ac4495a | 4670 | printf_filtered ("%s %s\n", |
efd66ac6 | 4671 | tmp, MSYMBOL_PRINT_NAME (msymbol.minsym)); |
c906108c SS |
4672 | } |
4673 | ||
4674 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4675 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4676 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4677 | matches. */ |
4678 | ||
c906108c | 4679 | static void |
12615cba PW |
4680 | symtab_symbol_info (bool quiet, |
4681 | const char *regexp, enum search_domain kind, | |
4682 | const char *t_regexp, int from_tty) | |
c906108c | 4683 | { |
bc043ef3 | 4684 | static const char * const classnames[] = |
e8930875 | 4685 | {"variable", "function", "type"}; |
c7dcbf88 | 4686 | const char *last_filename = ""; |
c906108c SS |
4687 | int first = 1; |
4688 | ||
e8930875 JK |
4689 | gdb_assert (kind <= TYPES_DOMAIN); |
4690 | ||
c378eb4e | 4691 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba PW |
4692 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4693 | t_regexp, 0, NULL); | |
c906108c | 4694 | |
12615cba PW |
4695 | if (!quiet) |
4696 | { | |
4697 | if (regexp != NULL) | |
4698 | { | |
4699 | if (t_regexp != NULL) | |
4700 | printf_filtered | |
4701 | (_("All %ss matching regular expression \"%s\"" | |
4702 | " with type matching regulation expression \"%s\":\n"), | |
4703 | classnames[kind], regexp, t_regexp); | |
4704 | else | |
4705 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4706 | classnames[kind], regexp); | |
4707 | } | |
4708 | else | |
4709 | { | |
4710 | if (t_regexp != NULL) | |
4711 | printf_filtered | |
4712 | (_("All defined %ss" | |
4713 | " with type matching regulation expression \"%s\" :\n"), | |
4714 | classnames[kind], t_regexp); | |
4715 | else | |
4716 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4717 | } | |
4718 | } | |
c906108c | 4719 | |
b9c04fb2 | 4720 | for (const symbol_search &p : symbols) |
c906108c SS |
4721 | { |
4722 | QUIT; | |
4723 | ||
b9c04fb2 | 4724 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4725 | { |
4726 | if (first) | |
4727 | { | |
12615cba PW |
4728 | if (!quiet) |
4729 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4730 | first = 0; |
4731 | } | |
b9c04fb2 | 4732 | print_msymbol_info (p.msymbol); |
c5aa993b | 4733 | } |
c906108c | 4734 | else |
c5aa993b JM |
4735 | { |
4736 | print_symbol_info (kind, | |
b9c04fb2 TT |
4737 | p.symbol, |
4738 | p.block, | |
c5aa993b | 4739 | last_filename); |
d01060f0 | 4740 | last_filename |
b9c04fb2 | 4741 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4742 | } |
c906108c | 4743 | } |
c906108c SS |
4744 | } |
4745 | ||
0b39b52e | 4746 | static void |
12615cba | 4747 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4748 | { |
12615cba PW |
4749 | std::string regexp; |
4750 | std::string t_regexp; | |
4751 | bool quiet = false; | |
4752 | ||
4753 | while (args != NULL | |
4754 | && extract_info_print_args (&args, &quiet, ®exp, &t_regexp)) | |
4755 | ; | |
4756 | ||
4757 | if (args != NULL) | |
4758 | report_unrecognized_option_error ("info variables", args); | |
4759 | ||
4760 | symtab_symbol_info (quiet, | |
4761 | regexp.empty () ? NULL : regexp.c_str (), | |
4762 | VARIABLES_DOMAIN, | |
4763 | t_regexp.empty () ? NULL : t_regexp.c_str (), | |
4764 | from_tty); | |
0b39b52e TT |
4765 | } |
4766 | ||
12615cba | 4767 | |
c906108c | 4768 | static void |
12615cba | 4769 | info_functions_command (const char *args, int from_tty) |
c906108c | 4770 | { |
12615cba PW |
4771 | std::string regexp; |
4772 | std::string t_regexp; | |
d54cfd76 | 4773 | bool quiet = false; |
12615cba PW |
4774 | |
4775 | while (args != NULL | |
4776 | && extract_info_print_args (&args, &quiet, ®exp, &t_regexp)) | |
4777 | ; | |
4778 | ||
4779 | if (args != NULL) | |
4780 | report_unrecognized_option_error ("info functions", args); | |
4781 | ||
4782 | symtab_symbol_info (quiet, | |
4783 | regexp.empty () ? NULL : regexp.c_str (), | |
4784 | FUNCTIONS_DOMAIN, | |
4785 | t_regexp.empty () ? NULL : t_regexp.c_str (), | |
4786 | from_tty); | |
c906108c SS |
4787 | } |
4788 | ||
357e46e7 | 4789 | |
c906108c | 4790 | static void |
1d12d88f | 4791 | info_types_command (const char *regexp, int from_tty) |
c906108c | 4792 | { |
12615cba | 4793 | symtab_symbol_info (false, regexp, TYPES_DOMAIN, NULL, from_tty); |
c906108c SS |
4794 | } |
4795 | ||
c378eb4e | 4796 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4797 | |
8b93c638 | 4798 | void |
fba45db2 | 4799 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4800 | { |
4801 | rbreak_command (regexp, from_tty); | |
4802 | } | |
8926118c | 4803 | |
c906108c | 4804 | static void |
0b39b52e | 4805 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 4806 | { |
c80049d3 | 4807 | std::string string; |
96142726 TT |
4808 | const char **files = NULL; |
4809 | const char *file_name; | |
8bd10a10 | 4810 | int nfiles = 0; |
c906108c | 4811 | |
8bd10a10 CM |
4812 | if (regexp) |
4813 | { | |
0b39b52e | 4814 | const char *colon = strchr (regexp, ':'); |
433759f7 | 4815 | |
8bd10a10 CM |
4816 | if (colon && *(colon + 1) != ':') |
4817 | { | |
4818 | int colon_index; | |
96142726 | 4819 | char *local_name; |
8bd10a10 CM |
4820 | |
4821 | colon_index = colon - regexp; | |
224c3ddb | 4822 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
4823 | memcpy (local_name, regexp, colon_index); |
4824 | local_name[colon_index--] = 0; | |
4825 | while (isspace (local_name[colon_index])) | |
4826 | local_name[colon_index--] = 0; | |
4827 | file_name = local_name; | |
8bd10a10 CM |
4828 | files = &file_name; |
4829 | nfiles = 1; | |
529480d0 | 4830 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4831 | } |
4832 | } | |
4833 | ||
b9c04fb2 TT |
4834 | std::vector<symbol_search> symbols = search_symbols (regexp, |
4835 | FUNCTIONS_DOMAIN, | |
12615cba | 4836 | NULL, |
b9c04fb2 | 4837 | nfiles, files); |
c906108c | 4838 | |
c80049d3 | 4839 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 4840 | for (const symbol_search &p : symbols) |
c906108c | 4841 | { |
b9c04fb2 | 4842 | if (p.msymbol.minsym == NULL) |
c5aa993b | 4843 | { |
b9c04fb2 | 4844 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 4845 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 4846 | |
c80049d3 TT |
4847 | string = string_printf ("%s:'%s'", fullname, |
4848 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
4849 | break_command (&string[0], from_tty); | |
c7dcbf88 | 4850 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 4851 | } |
c906108c | 4852 | else |
c5aa993b | 4853 | { |
c80049d3 TT |
4854 | string = string_printf ("'%s'", |
4855 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 4856 | |
c80049d3 | 4857 | break_command (&string[0], from_tty); |
c5aa993b | 4858 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 4859 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 4860 | } |
c906108c | 4861 | } |
c906108c | 4862 | } |
c906108c | 4863 | \f |
c5aa993b | 4864 | |
c62446b1 | 4865 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
4866 | |
4867 | static int | |
c62446b1 | 4868 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 4869 | const lookup_name_info &lookup_name, |
b5ec771e PA |
4870 | completion_match_result &match_res) |
4871 | { | |
d4c2a405 | 4872 | const language_defn *lang = language_def (symbol_language); |
1976171a | 4873 | |
b5ec771e | 4874 | symbol_name_matcher_ftype *name_match |
618daa93 | 4875 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 4876 | |
a207cff2 | 4877 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
4878 | } |
4879 | ||
b5ec771e | 4880 | /* See symtab.h. */ |
c906108c | 4881 | |
b5ec771e | 4882 | void |
eb3ff9a5 | 4883 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 4884 | language symbol_language, |
eb3ff9a5 | 4885 | const char *symname, |
b5ec771e | 4886 | const lookup_name_info &lookup_name, |
0d5cff50 | 4887 | const char *text, const char *word) |
c906108c | 4888 | { |
b5ec771e PA |
4889 | completion_match_result &match_res |
4890 | = tracker.reset_completion_match_result (); | |
4891 | ||
c378eb4e | 4892 | /* Clip symbols that cannot match. */ |
c62446b1 | 4893 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 4894 | return; |
c906108c | 4895 | |
b5ec771e PA |
4896 | /* Refresh SYMNAME from the match string. It's potentially |
4897 | different depending on language. (E.g., on Ada, the match may be | |
4898 | the encoded symbol name wrapped in "<>"). */ | |
4899 | symname = match_res.match.match (); | |
4900 | gdb_assert (symname != NULL); | |
4901 | ||
c906108c | 4902 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4903 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4904 | |
4905 | { | |
60a20c19 PA |
4906 | gdb::unique_xmalloc_ptr<char> completion |
4907 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 4908 | |
a207cff2 PA |
4909 | /* Here we pass the match-for-lcd object to add_completion. Some |
4910 | languages match the user text against substrings of symbol | |
4911 | names in some cases. E.g., in C++, "b push_ba" completes to | |
4912 | "std::vector::push_back", "std::string::push_back", etc., and | |
4913 | in this case we want the completion lowest common denominator | |
4914 | to be "push_back" instead of "std::". */ | |
4915 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 4916 | &match_res.match_for_lcd, text, word); |
c906108c SS |
4917 | } |
4918 | } | |
4919 | ||
6da67eb1 PA |
4920 | /* completion_list_add_name wrapper for struct symbol. */ |
4921 | ||
4922 | static void | |
eb3ff9a5 PA |
4923 | completion_list_add_symbol (completion_tracker &tracker, |
4924 | symbol *sym, | |
b5ec771e | 4925 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4926 | const char *text, const char *word) |
4927 | { | |
b5ec771e PA |
4928 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
4929 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4930 | lookup_name, text, word); |
6da67eb1 PA |
4931 | } |
4932 | ||
4933 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
4934 | ||
4935 | static void | |
eb3ff9a5 PA |
4936 | completion_list_add_msymbol (completion_tracker &tracker, |
4937 | minimal_symbol *sym, | |
b5ec771e | 4938 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4939 | const char *text, const char *word) |
4940 | { | |
b5ec771e PA |
4941 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
4942 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4943 | lookup_name, text, word); |
6da67eb1 PA |
4944 | } |
4945 | ||
b5ec771e | 4946 | |
69636828 AF |
4947 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4948 | again and feed all the selectors into the mill. */ | |
4949 | ||
4950 | static void | |
eb3ff9a5 PA |
4951 | completion_list_objc_symbol (completion_tracker &tracker, |
4952 | struct minimal_symbol *msymbol, | |
b5ec771e | 4953 | const lookup_name_info &lookup_name, |
0d5cff50 | 4954 | const char *text, const char *word) |
69636828 AF |
4955 | { |
4956 | static char *tmp = NULL; | |
4957 | static unsigned int tmplen = 0; | |
9af17804 | 4958 | |
0d5cff50 | 4959 | const char *method, *category, *selector; |
69636828 | 4960 | char *tmp2 = NULL; |
9af17804 | 4961 | |
efd66ac6 | 4962 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
4963 | |
4964 | /* Is it a method? */ | |
4965 | if ((method[0] != '-') && (method[0] != '+')) | |
4966 | return; | |
4967 | ||
1b026119 | 4968 | if (text[0] == '[') |
69636828 | 4969 | /* Complete on shortened method method. */ |
b5ec771e PA |
4970 | completion_list_add_name (tracker, language_objc, |
4971 | method + 1, | |
4972 | lookup_name, | |
1b026119 | 4973 | text, word); |
9af17804 | 4974 | |
69636828 AF |
4975 | while ((strlen (method) + 1) >= tmplen) |
4976 | { | |
4977 | if (tmplen == 0) | |
4978 | tmplen = 1024; | |
4979 | else | |
4980 | tmplen *= 2; | |
224c3ddb | 4981 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
4982 | } |
4983 | selector = strchr (method, ' '); | |
4984 | if (selector != NULL) | |
4985 | selector++; | |
9af17804 | 4986 | |
69636828 | 4987 | category = strchr (method, '('); |
9af17804 | 4988 | |
69636828 AF |
4989 | if ((category != NULL) && (selector != NULL)) |
4990 | { | |
4991 | memcpy (tmp, method, (category - method)); | |
4992 | tmp[category - method] = ' '; | |
4993 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 4994 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
4995 | lookup_name, text, word); |
4996 | if (text[0] == '[') | |
b5ec771e | 4997 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 4998 | lookup_name, text, word); |
69636828 | 4999 | } |
9af17804 | 5000 | |
69636828 AF |
5001 | if (selector != NULL) |
5002 | { | |
5003 | /* Complete on selector only. */ | |
5004 | strcpy (tmp, selector); | |
5005 | tmp2 = strchr (tmp, ']'); | |
5006 | if (tmp2 != NULL) | |
5007 | *tmp2 = '\0'; | |
9af17804 | 5008 | |
b5ec771e | 5009 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5010 | lookup_name, text, word); |
69636828 AF |
5011 | } |
5012 | } | |
5013 | ||
5014 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5015 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5016 | |
6f937416 PA |
5017 | static const char * |
5018 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5019 | { |
5020 | for (; p > text; --p) | |
5021 | { | |
5022 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5023 | continue; | |
5024 | else | |
5025 | { | |
5026 | if ((current_language->la_language == language_objc)) | |
5027 | { | |
c378eb4e | 5028 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5029 | continue; |
5030 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5031 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5032 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5033 | { /* Might be part of a method name. */ |
6f937416 | 5034 | const char *t = p; |
69636828 AF |
5035 | |
5036 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5037 | that we are in the middle of a method name. However, | |
5038 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5039 | Unfortunately we have to find it now to decide. */ | |
5040 | ||
5041 | while (t > text) | |
5042 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5043 | t[-1] == ' ' || t[-1] == ':' || | |
5044 | t[-1] == '(' || t[-1] == ')') | |
5045 | --t; | |
5046 | else | |
5047 | break; | |
5048 | ||
5049 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5050 | p = t - 2; /* Method name detected. */ |
5051 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5052 | } |
5053 | } | |
5054 | break; | |
5055 | } | |
5056 | } | |
5057 | return p; | |
5058 | } | |
5059 | ||
edb3359d | 5060 | static void |
eb3ff9a5 PA |
5061 | completion_list_add_fields (completion_tracker &tracker, |
5062 | struct symbol *sym, | |
b5ec771e | 5063 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5064 | const char *text, const char *word) |
edb3359d DJ |
5065 | { |
5066 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5067 | { | |
5068 | struct type *t = SYMBOL_TYPE (sym); | |
5069 | enum type_code c = TYPE_CODE (t); | |
5070 | int j; | |
5071 | ||
5072 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5073 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5074 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5075 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5076 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5077 | lookup_name, text, word); |
edb3359d DJ |
5078 | } |
5079 | } | |
5080 | ||
f9d67a22 PA |
5081 | /* See symtab.h. */ |
5082 | ||
5083 | bool | |
5084 | symbol_is_function_or_method (symbol *sym) | |
5085 | { | |
5086 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5087 | { | |
5088 | case TYPE_CODE_FUNC: | |
5089 | case TYPE_CODE_METHOD: | |
5090 | return true; | |
5091 | default: | |
5092 | return false; | |
5093 | } | |
5094 | } | |
5095 | ||
5096 | /* See symtab.h. */ | |
5097 | ||
5098 | bool | |
5099 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5100 | { | |
5101 | switch (MSYMBOL_TYPE (msymbol)) | |
5102 | { | |
5103 | case mst_text: | |
5104 | case mst_text_gnu_ifunc: | |
5105 | case mst_solib_trampoline: | |
5106 | case mst_file_text: | |
5107 | return true; | |
5108 | default: | |
5109 | return false; | |
5110 | } | |
5111 | } | |
5112 | ||
ca31ab1d PA |
5113 | /* See symtab.h. */ |
5114 | ||
5115 | bound_minimal_symbol | |
5116 | find_gnu_ifunc (const symbol *sym) | |
5117 | { | |
5118 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5119 | return {}; | |
5120 | ||
5121 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5122 | symbol_name_match_type::SEARCH_NAME); | |
5123 | struct objfile *objfile = symbol_objfile (sym); | |
5124 | ||
2b1ffcfd | 5125 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5126 | minimal_symbol *ifunc = NULL; |
5127 | ||
5128 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5129 | [&] (minimal_symbol *minsym) | |
5130 | { | |
5131 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5132 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5133 | { |
f50776aa PA |
5134 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5135 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5136 | { | |
5137 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5138 | msym_addr |
5139 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5140 | msym_addr, | |
5141 | current_top_target ()); | |
f50776aa PA |
5142 | } |
5143 | if (msym_addr == address) | |
5144 | { | |
5145 | ifunc = minsym; | |
5146 | return true; | |
5147 | } | |
ca31ab1d PA |
5148 | } |
5149 | return false; | |
5150 | }); | |
5151 | ||
5152 | if (ifunc != NULL) | |
5153 | return {ifunc, objfile}; | |
5154 | return {}; | |
5155 | } | |
5156 | ||
e11c72c7 GB |
5157 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5158 | ||
5159 | static void | |
5160 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5161 | completion_tracker &tracker, |
f9d67a22 | 5162 | complete_symbol_mode mode, |
b5ec771e | 5163 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5164 | const char *text, const char *word, |
5165 | enum type_code code) | |
5166 | { | |
5167 | struct symbol *sym; | |
5168 | const struct block *b; | |
5169 | struct block_iterator iter; | |
5170 | int i; | |
5171 | ||
ff6fa247 GB |
5172 | if (cust == NULL) |
5173 | return; | |
5174 | ||
e11c72c7 GB |
5175 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5176 | { | |
5177 | QUIT; | |
5178 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5179 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5180 | { | |
f9d67a22 PA |
5181 | if (completion_skip_symbol (mode, sym)) |
5182 | continue; | |
5183 | ||
e11c72c7 GB |
5184 | if (code == TYPE_CODE_UNDEF |
5185 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5186 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5187 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5188 | lookup_name, |
e11c72c7 GB |
5189 | text, word); |
5190 | } | |
5191 | } | |
5192 | } | |
5193 | ||
eb3ff9a5 PA |
5194 | void |
5195 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5196 | (completion_tracker &tracker, complete_symbol_mode mode, |
5197 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5198 | const char *text, const char *word, |
5199 | const char *break_on, enum type_code code) | |
c906108c | 5200 | { |
41d27058 JB |
5201 | /* Problem: All of the symbols have to be copied because readline |
5202 | frees them. I'm not going to worry about this; hopefully there | |
5203 | won't be that many. */ | |
5204 | ||
de4f826b | 5205 | struct symbol *sym; |
3977b71f | 5206 | const struct block *b; |
edb3359d | 5207 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5208 | struct block_iterator iter; |
c906108c | 5209 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5210 | const char *sym_text; |
c906108c | 5211 | |
41d27058 | 5212 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5213 | if (mode == complete_symbol_mode::LINESPEC) |
5214 | sym_text = text; | |
5215 | else | |
c906108c | 5216 | { |
6f937416 | 5217 | const char *p; |
c906108c | 5218 | char quote_found; |
6f937416 | 5219 | const char *quote_pos = NULL; |
c906108c SS |
5220 | |
5221 | /* First see if this is a quoted string. */ | |
5222 | quote_found = '\0'; | |
5223 | for (p = text; *p != '\0'; ++p) | |
5224 | { | |
5225 | if (quote_found != '\0') | |
5226 | { | |
5227 | if (*p == quote_found) | |
5228 | /* Found close quote. */ | |
5229 | quote_found = '\0'; | |
5230 | else if (*p == '\\' && p[1] == quote_found) | |
5231 | /* A backslash followed by the quote character | |
c5aa993b | 5232 | doesn't end the string. */ |
c906108c SS |
5233 | ++p; |
5234 | } | |
5235 | else if (*p == '\'' || *p == '"') | |
5236 | { | |
5237 | quote_found = *p; | |
5238 | quote_pos = p; | |
5239 | } | |
5240 | } | |
5241 | if (quote_found == '\'') | |
5242 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5243 | sym_text = quote_pos + 1; | |
5244 | else if (quote_found == '"') | |
5245 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5246 | to complete it any other way. */ |
c94fdfd0 | 5247 | { |
ef0b411a | 5248 | return; |
c94fdfd0 | 5249 | } |
c906108c SS |
5250 | else |
5251 | { | |
5252 | /* It is not a quoted string. Break it based on the characters | |
5253 | which are in symbols. */ | |
5254 | while (p > text) | |
5255 | { | |
95699ff0 | 5256 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5257 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5258 | --p; |
5259 | else | |
5260 | break; | |
5261 | } | |
5262 | sym_text = p; | |
5263 | } | |
5264 | } | |
5265 | ||
1b026119 | 5266 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5267 | |
c906108c SS |
5268 | /* At this point scan through the misc symbol vectors and add each |
5269 | symbol you find to the list. Eventually we want to ignore | |
5270 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5271 | handled by the psymtab code below). */ |
c906108c | 5272 | |
2f68a895 TT |
5273 | if (code == TYPE_CODE_UNDEF) |
5274 | { | |
2030c079 | 5275 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5276 | { |
7932255d | 5277 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5278 | { |
5279 | QUIT; | |
9af17804 | 5280 | |
5325b9bf TT |
5281 | if (completion_skip_symbol (mode, msymbol)) |
5282 | continue; | |
f9d67a22 | 5283 | |
5325b9bf TT |
5284 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5285 | sym_text, word); | |
eb3ff9a5 | 5286 | |
5325b9bf TT |
5287 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5288 | sym_text, word); | |
5289 | } | |
2f68a895 TT |
5290 | } |
5291 | } | |
c906108c | 5292 | |
e11c72c7 | 5293 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5294 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5295 | { |
b669c953 | 5296 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5297 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5298 | sym_text, word, code); | |
5299 | } | |
e11c72c7 | 5300 | |
14bc53a8 PA |
5301 | /* Look through the partial symtabs for all symbols which begin by |
5302 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5303 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5304 | lookup_name, |
5305 | NULL, | |
14bc53a8 PA |
5306 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5307 | { | |
5308 | add_symtab_completions (symtab, | |
f9d67a22 | 5309 | tracker, mode, lookup_name, |
1b026119 | 5310 | sym_text, word, code); |
14bc53a8 PA |
5311 | }, |
5312 | ALL_DOMAIN); | |
e11c72c7 | 5313 | |
c906108c | 5314 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5315 | complete on local vars). Also catch fields of types defined in |
5316 | this places which match our text string. Only complete on types | |
c378eb4e | 5317 | visible from current context. */ |
edb3359d DJ |
5318 | |
5319 | b = get_selected_block (0); | |
5320 | surrounding_static_block = block_static_block (b); | |
5321 | surrounding_global_block = block_global_block (b); | |
5322 | if (surrounding_static_block != NULL) | |
5323 | while (b != surrounding_static_block) | |
5324 | { | |
5325 | QUIT; | |
c906108c | 5326 | |
edb3359d DJ |
5327 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5328 | { | |
2f68a895 TT |
5329 | if (code == TYPE_CODE_UNDEF) |
5330 | { | |
b5ec771e | 5331 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5332 | sym_text, word); |
b5ec771e | 5333 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5334 | sym_text, word); |
2f68a895 TT |
5335 | } |
5336 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5337 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5338 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5339 | sym_text, word); |
edb3359d | 5340 | } |
c5aa993b | 5341 | |
edb3359d DJ |
5342 | /* Stop when we encounter an enclosing function. Do not stop for |
5343 | non-inlined functions - the locals of the enclosing function | |
5344 | are in scope for a nested function. */ | |
5345 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5346 | break; | |
5347 | b = BLOCK_SUPERBLOCK (b); | |
5348 | } | |
c906108c | 5349 | |
edb3359d | 5350 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5351 | |
2f68a895 TT |
5352 | if (code == TYPE_CODE_UNDEF) |
5353 | { | |
5354 | if (surrounding_static_block != NULL) | |
5355 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5356 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5357 | sym_text, word); |
edb3359d | 5358 | |
2f68a895 TT |
5359 | if (surrounding_global_block != NULL) |
5360 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5361 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5362 | sym_text, word); |
2f68a895 | 5363 | } |
c906108c | 5364 | |
2f68a895 TT |
5365 | /* Skip macros if we are completing a struct tag -- arguable but |
5366 | usually what is expected. */ | |
5367 | if (current_language->la_macro_expansion == macro_expansion_c | |
5368 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5369 | { |
f6c2623e | 5370 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5371 | |
14bc53a8 PA |
5372 | /* This adds a macro's name to the current completion list. */ |
5373 | auto add_macro_name = [&] (const char *macro_name, | |
5374 | const macro_definition *, | |
5375 | macro_source_file *, | |
5376 | int) | |
5377 | { | |
1b026119 PA |
5378 | completion_list_add_name (tracker, language_c, macro_name, |
5379 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5380 | }; |
5381 | ||
9a044a89 TT |
5382 | /* Add any macros visible in the default scope. Note that this |
5383 | may yield the occasional wrong result, because an expression | |
5384 | might be evaluated in a scope other than the default. For | |
5385 | example, if the user types "break file:line if <TAB>", the | |
5386 | resulting expression will be evaluated at "file:line" -- but | |
5387 | at there does not seem to be a way to detect this at | |
5388 | completion time. */ | |
5389 | scope = default_macro_scope (); | |
5390 | if (scope) | |
f6c2623e TT |
5391 | macro_for_each_in_scope (scope->file, scope->line, |
5392 | add_macro_name); | |
9a044a89 TT |
5393 | |
5394 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5395 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5396 | } |
ef0b411a GB |
5397 | } |
5398 | ||
eb3ff9a5 PA |
5399 | void |
5400 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5401 | complete_symbol_mode mode, |
b5ec771e | 5402 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5403 | const char *text, const char *word, |
5404 | enum type_code code) | |
f55ee35c | 5405 | { |
c6756f62 | 5406 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5407 | name_match_type, |
eb3ff9a5 PA |
5408 | text, word, "", |
5409 | code); | |
f55ee35c JK |
5410 | } |
5411 | ||
eb3ff9a5 PA |
5412 | /* Collect all symbols (regardless of class) which begin by matching |
5413 | TEXT. */ | |
41d27058 | 5414 | |
eb3ff9a5 PA |
5415 | void |
5416 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5417 | complete_symbol_mode mode, |
b5ec771e | 5418 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5419 | const char *text, const char *word) |
41d27058 | 5420 | { |
c6756f62 | 5421 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5422 | name_match_type, |
eb3ff9a5 PA |
5423 | text, word, |
5424 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5425 | } |
5426 | ||
eb3ff9a5 PA |
5427 | /* Like collect_symbol_completion_matches, but only collect |
5428 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5429 | |
eb3ff9a5 PA |
5430 | void |
5431 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5432 | const char *text, const char *word, | |
5433 | enum type_code code) | |
2f68a895 | 5434 | { |
c6756f62 | 5435 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5436 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5437 | |
2f68a895 TT |
5438 | gdb_assert (code == TYPE_CODE_UNION |
5439 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5440 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5441 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5442 | name_match_type, |
eb3ff9a5 | 5443 | text, word, code); |
41d27058 JB |
5444 | } |
5445 | ||
eb3ff9a5 PA |
5446 | /* Like collect_symbol_completion_matches, but collects a list of |
5447 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5448 | |
eb3ff9a5 PA |
5449 | void |
5450 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5451 | complete_symbol_mode mode, |
b5ec771e | 5452 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5453 | const char *text, const char *word, |
5454 | const char *srcfile) | |
c94fdfd0 | 5455 | { |
c94fdfd0 | 5456 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5457 | const char *sym_text; |
c94fdfd0 EZ |
5458 | |
5459 | /* Now look for the symbol we are supposed to complete on. | |
5460 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5461 | if (mode == complete_symbol_mode::LINESPEC) |
5462 | sym_text = text; | |
5463 | else | |
c94fdfd0 | 5464 | { |
6f937416 | 5465 | const char *p; |
c94fdfd0 | 5466 | char quote_found; |
6f937416 | 5467 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5468 | |
5469 | /* First see if this is a quoted string. */ | |
5470 | quote_found = '\0'; | |
5471 | for (p = text; *p != '\0'; ++p) | |
5472 | { | |
5473 | if (quote_found != '\0') | |
5474 | { | |
5475 | if (*p == quote_found) | |
5476 | /* Found close quote. */ | |
5477 | quote_found = '\0'; | |
5478 | else if (*p == '\\' && p[1] == quote_found) | |
5479 | /* A backslash followed by the quote character | |
5480 | doesn't end the string. */ | |
5481 | ++p; | |
5482 | } | |
5483 | else if (*p == '\'' || *p == '"') | |
5484 | { | |
5485 | quote_found = *p; | |
5486 | quote_pos = p; | |
5487 | } | |
5488 | } | |
5489 | if (quote_found == '\'') | |
5490 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5491 | sym_text = quote_pos + 1; | |
5492 | else if (quote_found == '"') | |
5493 | /* A double-quoted string is never a symbol, nor does it make sense | |
5494 | to complete it any other way. */ | |
5495 | { | |
eb3ff9a5 | 5496 | return; |
c94fdfd0 EZ |
5497 | } |
5498 | else | |
5499 | { | |
69636828 AF |
5500 | /* Not a quoted string. */ |
5501 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5502 | } |
5503 | } | |
5504 | ||
1b026119 | 5505 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5506 | |
8f14146e PA |
5507 | /* Go through symtabs for SRCFILE and check the externs and statics |
5508 | for symbols which match. */ | |
5509 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5510 | { |
8f14146e | 5511 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5512 | tracker, mode, lookup_name, |
1b026119 | 5513 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5514 | return false; |
5515 | }); | |
e27852be DE |
5516 | } |
5517 | ||
c94fdfd0 EZ |
5518 | /* A helper function for make_source_files_completion_list. It adds |
5519 | another file name to a list of possible completions, growing the | |
5520 | list as necessary. */ | |
5521 | ||
5522 | static void | |
6f937416 | 5523 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5524 | completion_list *list) |
c94fdfd0 | 5525 | { |
60a20c19 | 5526 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5527 | } |
5528 | ||
5529 | static int | |
5530 | not_interesting_fname (const char *fname) | |
5531 | { | |
5532 | static const char *illegal_aliens[] = { | |
5533 | "_globals_", /* inserted by coff_symtab_read */ | |
5534 | NULL | |
5535 | }; | |
5536 | int i; | |
5537 | ||
5538 | for (i = 0; illegal_aliens[i]; i++) | |
5539 | { | |
0ba1096a | 5540 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5541 | return 1; |
5542 | } | |
5543 | return 0; | |
5544 | } | |
5545 | ||
ccefe4c4 TT |
5546 | /* An object of this type is passed as the user_data argument to |
5547 | map_partial_symbol_filenames. */ | |
5548 | struct add_partial_filename_data | |
5549 | { | |
9fdc877b | 5550 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5551 | const char *text; |
5552 | const char *word; | |
ccefe4c4 | 5553 | int text_len; |
eb3ff9a5 | 5554 | completion_list *list; |
ccefe4c4 TT |
5555 | }; |
5556 | ||
5557 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5558 | |
ccefe4c4 | 5559 | static void |
2837d59e | 5560 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5561 | void *user_data) |
5562 | { | |
19ba03f4 SM |
5563 | struct add_partial_filename_data *data |
5564 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5565 | |
5566 | if (not_interesting_fname (filename)) | |
5567 | return; | |
bbf2f4df | 5568 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5569 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5570 | { |
5571 | /* This file matches for a completion; add it to the | |
5572 | current list of matches. */ | |
49c4e619 | 5573 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5574 | } |
5575 | else | |
5576 | { | |
5577 | const char *base_name = lbasename (filename); | |
433759f7 | 5578 | |
ccefe4c4 | 5579 | if (base_name != filename |
bbf2f4df | 5580 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5581 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5582 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5583 | } |
5584 | } | |
5585 | ||
eb3ff9a5 | 5586 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5587 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5588 | program. */ |
c94fdfd0 | 5589 | |
eb3ff9a5 | 5590 | completion_list |
6f937416 | 5591 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5592 | { |
c94fdfd0 | 5593 | size_t text_len = strlen (text); |
eb3ff9a5 | 5594 | completion_list list; |
31889e00 | 5595 | const char *base_name; |
ccefe4c4 | 5596 | struct add_partial_filename_data datum; |
c94fdfd0 | 5597 | |
c94fdfd0 EZ |
5598 | if (!have_full_symbols () && !have_partial_symbols ()) |
5599 | return list; | |
5600 | ||
bbf2f4df | 5601 | filename_seen_cache filenames_seen; |
9fdc877b | 5602 | |
2030c079 | 5603 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5604 | { |
b669c953 | 5605 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5606 | { |
8b31193a TT |
5607 | for (symtab *s : compunit_filetabs (cu)) |
5608 | { | |
5609 | if (not_interesting_fname (s->filename)) | |
5610 | continue; | |
5611 | if (!filenames_seen.seen (s->filename) | |
5612 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5613 | { | |
5614 | /* This file matches for a completion; add it to the current | |
5615 | list of matches. */ | |
5616 | add_filename_to_list (s->filename, text, word, &list); | |
5617 | } | |
5618 | else | |
5619 | { | |
5620 | /* NOTE: We allow the user to type a base name when the | |
5621 | debug info records leading directories, but not the other | |
5622 | way around. This is what subroutines of breakpoint | |
5623 | command do when they parse file names. */ | |
5624 | base_name = lbasename (s->filename); | |
5625 | if (base_name != s->filename | |
5626 | && !filenames_seen.seen (base_name) | |
5627 | && filename_ncmp (base_name, text, text_len) == 0) | |
5628 | add_filename_to_list (base_name, text, word, &list); | |
5629 | } | |
5630 | } | |
c94fdfd0 EZ |
5631 | } |
5632 | } | |
5633 | ||
bbf2f4df | 5634 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5635 | datum.text = text; |
5636 | datum.word = word; | |
5637 | datum.text_len = text_len; | |
5638 | datum.list = &list; | |
bb4142cf DE |
5639 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5640 | 0 /*need_fullname*/); | |
9fdc877b | 5641 | |
c94fdfd0 EZ |
5642 | return list; |
5643 | } | |
c906108c | 5644 | \f |
51cc5b07 | 5645 | /* Track MAIN */ |
32ac0d11 TT |
5646 | |
5647 | /* Return the "main_info" object for the current program space. If | |
5648 | the object has not yet been created, create it and fill in some | |
5649 | default values. */ | |
5650 | ||
5651 | static struct main_info * | |
5652 | get_main_info (void) | |
5653 | { | |
19ba03f4 SM |
5654 | struct main_info *info |
5655 | = (struct main_info *) program_space_data (current_program_space, | |
32ac0d11 TT |
5656 | main_progspace_key); |
5657 | ||
5658 | if (info == NULL) | |
5659 | { | |
3d548a53 TT |
5660 | /* It may seem strange to store the main name in the progspace |
5661 | and also in whatever objfile happens to see a main name in | |
5662 | its debug info. The reason for this is mainly historical: | |
5663 | gdb returned "main" as the name even if no function named | |
5664 | "main" was defined the program; and this approach lets us | |
5665 | keep compatibility. */ | |
32ac0d11 TT |
5666 | info = XCNEW (struct main_info); |
5667 | info->language_of_main = language_unknown; | |
5668 | set_program_space_data (current_program_space, main_progspace_key, | |
5669 | info); | |
5670 | } | |
5671 | ||
5672 | return info; | |
5673 | } | |
5674 | ||
5675 | /* A cleanup to destroy a struct main_info when a progspace is | |
5676 | destroyed. */ | |
5677 | ||
5678 | static void | |
5679 | main_info_cleanup (struct program_space *pspace, void *data) | |
5680 | { | |
19ba03f4 | 5681 | struct main_info *info = (struct main_info *) data; |
32ac0d11 TT |
5682 | |
5683 | if (info != NULL) | |
5684 | xfree (info->name_of_main); | |
5685 | xfree (info); | |
5686 | } | |
51cc5b07 | 5687 | |
3d548a53 | 5688 | static void |
9e6c82ad | 5689 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5690 | { |
32ac0d11 TT |
5691 | struct main_info *info = get_main_info (); |
5692 | ||
5693 | if (info->name_of_main != NULL) | |
51cc5b07 | 5694 | { |
32ac0d11 TT |
5695 | xfree (info->name_of_main); |
5696 | info->name_of_main = NULL; | |
5697 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5698 | } |
5699 | if (name != NULL) | |
5700 | { | |
32ac0d11 TT |
5701 | info->name_of_main = xstrdup (name); |
5702 | info->language_of_main = lang; | |
51cc5b07 AC |
5703 | } |
5704 | } | |
5705 | ||
ea53e89f JB |
5706 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5707 | accordingly. */ | |
5708 | ||
5709 | static void | |
5710 | find_main_name (void) | |
5711 | { | |
cd6c7346 | 5712 | const char *new_main_name; |
3d548a53 TT |
5713 | |
5714 | /* First check the objfiles to see whether a debuginfo reader has | |
5715 | picked up the appropriate main name. Historically the main name | |
5716 | was found in a more or less random way; this approach instead | |
5717 | relies on the order of objfile creation -- which still isn't | |
5718 | guaranteed to get the correct answer, but is just probably more | |
5719 | accurate. */ | |
2030c079 | 5720 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5721 | { |
5722 | if (objfile->per_bfd->name_of_main != NULL) | |
5723 | { | |
5724 | set_main_name (objfile->per_bfd->name_of_main, | |
5725 | objfile->per_bfd->language_of_main); | |
5726 | return; | |
5727 | } | |
5728 | } | |
ea53e89f JB |
5729 | |
5730 | /* Try to see if the main procedure is in Ada. */ | |
5731 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5732 | be to add a new method in the language vector, and call this | |
5733 | method for each language until one of them returns a non-empty | |
5734 | name. This would allow us to remove this hard-coded call to | |
5735 | an Ada function. It is not clear that this is a better approach | |
5736 | at this point, because all methods need to be written in a way | |
c378eb4e | 5737 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5738 | important that a method does not return a wrong name for the main |
5739 | procedure if the main procedure is actually written in a different | |
5740 | language. It is easy to guaranty this with Ada, since we use a | |
5741 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5742 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5743 | be guarantied for languages such as C, for instance. This suggests |
5744 | that order of call for these methods becomes important, which means | |
5745 | a more complicated approach. */ | |
5746 | new_main_name = ada_main_name (); | |
5747 | if (new_main_name != NULL) | |
9af17804 | 5748 | { |
9e6c82ad | 5749 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5750 | return; |
5751 | } | |
5752 | ||
63778547 IB |
5753 | new_main_name = d_main_name (); |
5754 | if (new_main_name != NULL) | |
5755 | { | |
5756 | set_main_name (new_main_name, language_d); | |
5757 | return; | |
5758 | } | |
5759 | ||
a766d390 DE |
5760 | new_main_name = go_main_name (); |
5761 | if (new_main_name != NULL) | |
5762 | { | |
9e6c82ad | 5763 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5764 | return; |
5765 | } | |
5766 | ||
cd6c7346 PM |
5767 | new_main_name = pascal_main_name (); |
5768 | if (new_main_name != NULL) | |
9af17804 | 5769 | { |
9e6c82ad | 5770 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5771 | return; |
5772 | } | |
5773 | ||
ea53e89f JB |
5774 | /* The languages above didn't identify the name of the main procedure. |
5775 | Fallback to "main". */ | |
9e6c82ad | 5776 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5777 | } |
5778 | ||
51cc5b07 AC |
5779 | char * |
5780 | main_name (void) | |
5781 | { | |
32ac0d11 TT |
5782 | struct main_info *info = get_main_info (); |
5783 | ||
5784 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5785 | find_main_name (); |
5786 | ||
32ac0d11 | 5787 | return info->name_of_main; |
51cc5b07 AC |
5788 | } |
5789 | ||
9e6c82ad TT |
5790 | /* Return the language of the main function. If it is not known, |
5791 | return language_unknown. */ | |
5792 | ||
5793 | enum language | |
5794 | main_language (void) | |
5795 | { | |
32ac0d11 TT |
5796 | struct main_info *info = get_main_info (); |
5797 | ||
5798 | if (info->name_of_main == NULL) | |
5799 | find_main_name (); | |
5800 | ||
5801 | return info->language_of_main; | |
9e6c82ad TT |
5802 | } |
5803 | ||
ea53e89f JB |
5804 | /* Handle ``executable_changed'' events for the symtab module. */ |
5805 | ||
5806 | static void | |
781b42b0 | 5807 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5808 | { |
5809 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5810 | set_main_name (NULL, language_unknown); |
ea53e89f | 5811 | } |
51cc5b07 | 5812 | |
a6c727b2 DJ |
5813 | /* Return 1 if the supplied producer string matches the ARM RealView |
5814 | compiler (armcc). */ | |
5815 | ||
5816 | int | |
5817 | producer_is_realview (const char *producer) | |
5818 | { | |
5819 | static const char *const arm_idents[] = { | |
5820 | "ARM C Compiler, ADS", | |
5821 | "Thumb C Compiler, ADS", | |
5822 | "ARM C++ Compiler, ADS", | |
5823 | "Thumb C++ Compiler, ADS", | |
5824 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5825 | "ARM C/C++ Compiler, RVCT" | |
5826 | }; | |
5827 | int i; | |
5828 | ||
5829 | if (producer == NULL) | |
5830 | return 0; | |
5831 | ||
5832 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 5833 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
5834 | return 1; |
5835 | ||
5836 | return 0; | |
5837 | } | |
ed0616c6 | 5838 | |
f1e6e072 TT |
5839 | \f |
5840 | ||
5841 | /* The next index to hand out in response to a registration request. */ | |
5842 | ||
5843 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5844 | ||
5845 | /* The maximum number of "aclass" registrations we support. This is | |
5846 | constant for convenience. */ | |
5847 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5848 | ||
5849 | /* The objects representing the various "aclass" values. The elements | |
5850 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5851 | elements are those registered at gdb initialization time. */ | |
5852 | ||
5853 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5854 | ||
5855 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5856 | so that it can be const. */ | |
5857 | ||
5858 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5859 | ||
5860 | /* Make sure we saved enough room in struct symbol. */ | |
5861 | ||
5862 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5863 | ||
5864 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5865 | is the ops vector associated with this index. This returns the new | |
5866 | index, which should be used as the aclass_index field for symbols | |
5867 | of this type. */ | |
5868 | ||
5869 | int | |
5870 | register_symbol_computed_impl (enum address_class aclass, | |
5871 | const struct symbol_computed_ops *ops) | |
5872 | { | |
5873 | int result = next_aclass_value++; | |
5874 | ||
5875 | gdb_assert (aclass == LOC_COMPUTED); | |
5876 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5877 | symbol_impl[result].aclass = aclass; | |
5878 | symbol_impl[result].ops_computed = ops; | |
5879 | ||
24d6c2a0 TT |
5880 | /* Sanity check OPS. */ |
5881 | gdb_assert (ops != NULL); | |
5882 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
5883 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 5884 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
5885 | gdb_assert (ops->read_variable != NULL); |
5886 | ||
f1e6e072 TT |
5887 | return result; |
5888 | } | |
5889 | ||
5890 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
5891 | OPS is the ops vector associated with this index. This returns the | |
5892 | new index, which should be used as the aclass_index field for symbols | |
5893 | of this type. */ | |
5894 | ||
5895 | int | |
5896 | register_symbol_block_impl (enum address_class aclass, | |
5897 | const struct symbol_block_ops *ops) | |
5898 | { | |
5899 | int result = next_aclass_value++; | |
5900 | ||
5901 | gdb_assert (aclass == LOC_BLOCK); | |
5902 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5903 | symbol_impl[result].aclass = aclass; | |
5904 | symbol_impl[result].ops_block = ops; | |
5905 | ||
5906 | /* Sanity check OPS. */ | |
5907 | gdb_assert (ops != NULL); | |
5908 | gdb_assert (ops->find_frame_base_location != NULL); | |
5909 | ||
5910 | return result; | |
5911 | } | |
5912 | ||
5913 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
5914 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
5915 | this index. This returns the new index, which should be used as | |
5916 | the aclass_index field for symbols of this type. */ | |
5917 | ||
5918 | int | |
5919 | register_symbol_register_impl (enum address_class aclass, | |
5920 | const struct symbol_register_ops *ops) | |
5921 | { | |
5922 | int result = next_aclass_value++; | |
5923 | ||
5924 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
5925 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5926 | symbol_impl[result].aclass = aclass; | |
5927 | symbol_impl[result].ops_register = ops; | |
5928 | ||
5929 | return result; | |
5930 | } | |
5931 | ||
5932 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
5933 | address_class. */ | |
5934 | ||
5935 | static void | |
5936 | initialize_ordinary_address_classes (void) | |
5937 | { | |
5938 | int i; | |
5939 | ||
5940 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 5941 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
5942 | } |
5943 | ||
5944 | \f | |
5945 | ||
1994afbf DE |
5946 | /* Helper function to initialize the fields of an objfile-owned symbol. |
5947 | It assumed that *SYM is already all zeroes. */ | |
5948 | ||
5949 | static void | |
5950 | initialize_objfile_symbol_1 (struct symbol *sym) | |
5951 | { | |
5952 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
5953 | SYMBOL_SECTION (sym) = -1; | |
5954 | } | |
5955 | ||
5956 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
5957 | |
5958 | void | |
38bf1463 | 5959 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
5960 | { |
5961 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 5962 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
5963 | } |
5964 | ||
5965 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
5966 | obstack. */ | |
5967 | ||
5968 | struct symbol * | |
5969 | allocate_symbol (struct objfile *objfile) | |
5970 | { | |
5971 | struct symbol *result; | |
5972 | ||
5973 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 5974 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5975 | |
5976 | return result; | |
5977 | } | |
5978 | ||
5979 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
5980 | obstack. */ | |
5981 | ||
5982 | struct template_symbol * | |
5983 | allocate_template_symbol (struct objfile *objfile) | |
5984 | { | |
5985 | struct template_symbol *result; | |
5986 | ||
5987 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 5988 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5989 | |
5990 | return result; | |
5991 | } | |
5992 | ||
08be3fe3 DE |
5993 | /* See symtab.h. */ |
5994 | ||
5995 | struct objfile * | |
5996 | symbol_objfile (const struct symbol *symbol) | |
5997 | { | |
1994afbf DE |
5998 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5999 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6000 | } |
6001 | ||
6002 | /* See symtab.h. */ | |
6003 | ||
6004 | struct gdbarch * | |
6005 | symbol_arch (const struct symbol *symbol) | |
6006 | { | |
1994afbf DE |
6007 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6008 | return symbol->owner.arch; | |
6009 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6010 | } |
6011 | ||
6012 | /* See symtab.h. */ | |
6013 | ||
6014 | struct symtab * | |
6015 | symbol_symtab (const struct symbol *symbol) | |
6016 | { | |
1994afbf DE |
6017 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6018 | return symbol->owner.symtab; | |
08be3fe3 DE |
6019 | } |
6020 | ||
6021 | /* See symtab.h. */ | |
6022 | ||
6023 | void | |
6024 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6025 | { | |
1994afbf DE |
6026 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6027 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6028 | } |
6029 | ||
e623cf5d TT |
6030 | \f |
6031 | ||
c906108c | 6032 | void |
fba45db2 | 6033 | _initialize_symtab (void) |
c906108c | 6034 | { |
f1e6e072 TT |
6035 | initialize_ordinary_address_classes (); |
6036 | ||
32ac0d11 TT |
6037 | main_progspace_key |
6038 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
6039 | ||
f57d2163 DE |
6040 | symbol_cache_key |
6041 | = register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup); | |
6042 | ||
12615cba PW |
6043 | add_info ("variables", info_variables_command, |
6044 | info_print_args_help (_("\ | |
6045 | All global and static variable names or those matching REGEXPs.\n\ | |
6046 | Usage: info variables [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6047 | Prints the global and static variables.\n"), | |
6048 | _("global and static variables"))); | |
c906108c | 6049 | if (dbx_commands) |
12615cba PW |
6050 | add_com ("whereis", class_info, info_variables_command, |
6051 | info_print_args_help (_("\ | |
6052 | All global and static variable names, or those matching REGEXPs.\n\ | |
6053 | Usage: whereis [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6054 | Prints the global and static variables.\n"), | |
6055 | _("global and static variables"))); | |
c906108c | 6056 | |
11db9430 | 6057 | add_info ("functions", info_functions_command, |
12615cba PW |
6058 | info_print_args_help (_("\ |
6059 | All function names or those matching REGEXPs.\n\ | |
6060 | Usage: info functions [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6061 | Prints the functions.\n"), | |
6062 | _("functions"))); | |
c906108c SS |
6063 | |
6064 | /* FIXME: This command has at least the following problems: | |
6065 | 1. It prints builtin types (in a very strange and confusing fashion). | |
6066 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
6067 | typedef struct foo *FOO |
6068 | type_print prints "FOO" when we want to make it (in this situation) | |
6069 | print "struct foo *". | |
c906108c SS |
6070 | I also think "ptype" or "whatis" is more likely to be useful (but if |
6071 | there is much disagreement "info types" can be fixed). */ | |
11db9430 | 6072 | add_info ("types", info_types_command, |
1bedd215 | 6073 | _("All type names, or those matching REGEXP.")); |
c906108c | 6074 | |
11db9430 | 6075 | add_info ("sources", info_sources_command, |
1bedd215 | 6076 | _("Source files in the program.")); |
c906108c SS |
6077 | |
6078 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6079 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6080 | |
717d2f5a JB |
6081 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6082 | multiple_symbols_modes, &multiple_symbols_mode, | |
6083 | _("\ | |
6084 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
6085 | in an expression."), _("\ | |
6086 | Show how the debugger handles ambiguities in expressions."), _("\ | |
6087 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6088 | NULL, NULL, &setlist, &showlist); | |
6089 | ||
c011a4f4 DE |
6090 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6091 | &basenames_may_differ, _("\ | |
6092 | Set whether a source file may have multiple base names."), _("\ | |
6093 | Show whether a source file may have multiple base names."), _("\ | |
6094 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6095 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6096 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6097 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6098 | but it allows the same file be known by more than one base name.\n\ | |
6099 | If not set (the default), all source files are assumed to have just\n\ | |
6100 | one base name, and gdb will do file name comparisons more efficiently."), | |
6101 | NULL, NULL, | |
6102 | &setlist, &showlist); | |
6103 | ||
db0fec5c DE |
6104 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6105 | _("Set debugging of symbol table creation."), | |
6106 | _("Show debugging of symbol table creation."), _("\ | |
6107 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6108 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6109 | A value greater than 1 provides more verbose information."), | |
6110 | NULL, | |
6111 | NULL, | |
6112 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6113 | |
cc485e62 DE |
6114 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6115 | _("\ | |
6116 | Set debugging of symbol lookup."), _("\ | |
6117 | Show debugging of symbol lookup."), _("\ | |
6118 | When enabled (non-zero), symbol lookups are logged."), | |
6119 | NULL, NULL, | |
6120 | &setdebuglist, &showdebuglist); | |
6121 | ||
f57d2163 DE |
6122 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6123 | &new_symbol_cache_size, | |
6124 | _("Set the size of the symbol cache."), | |
6125 | _("Show the size of the symbol cache."), _("\ | |
6126 | The size of the symbol cache.\n\ | |
6127 | If zero then the symbol cache is disabled."), | |
6128 | set_symbol_cache_size_handler, NULL, | |
6129 | &maintenance_set_cmdlist, | |
6130 | &maintenance_show_cmdlist); | |
6131 | ||
6132 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6133 | _("Dump the symbol cache for each program space."), | |
6134 | &maintenanceprintlist); | |
6135 | ||
6136 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6137 | maintenance_print_symbol_cache_statistics, | |
6138 | _("Print symbol cache statistics for each program space."), | |
6139 | &maintenanceprintlist); | |
6140 | ||
6141 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6142 | maintenance_flush_symbol_cache, | |
6143 | _("Flush the symbol cache for each program space."), | |
6144 | &maintenancelist); | |
6145 | ||
76727919 TT |
6146 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6147 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6148 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6149 | } |