Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
88987551 | 30 | #include "gdb_regex.h" |
c906108c SS |
31 | #include "expression.h" |
32 | #include "language.h" | |
33 | #include "demangle.h" | |
34 | #include "inferior.h" | |
0378c332 | 35 | #include "source.h" |
a7fdf62f | 36 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 37 | #include "objc-lang.h" |
6aecb9c2 | 38 | #include "d-lang.h" |
1f8173e6 | 39 | #include "ada-lang.h" |
a766d390 | 40 | #include "go-lang.h" |
cd6c7346 | 41 | #include "p-lang.h" |
ff013f42 | 42 | #include "addrmap.h" |
529480d0 | 43 | #include "cli/cli-utils.h" |
1ed9f74e | 44 | #include "cli/cli-style.h" |
cce0e923 | 45 | #include "fnmatch.h" |
2de7ced7 | 46 | #include "hashtab.h" |
12615cba | 47 | #include "typeprint.h" |
2de7ced7 | 48 | |
04ea0df1 | 49 | #include "gdb_obstack.h" |
fe898f56 | 50 | #include "block.h" |
de4f826b | 51 | #include "dictionary.h" |
c906108c SS |
52 | |
53 | #include <sys/types.h> | |
54 | #include <fcntl.h> | |
53ce3c39 | 55 | #include <sys/stat.h> |
c906108c | 56 | #include <ctype.h> |
015a42b4 | 57 | #include "cp-abi.h" |
71c25dea | 58 | #include "cp-support.h" |
76727919 | 59 | #include "observable.h" |
3a40aaa0 | 60 | #include "solist.h" |
9a044a89 TT |
61 | #include "macrotab.h" |
62 | #include "macroscope.h" | |
c906108c | 63 | |
270140bd | 64 | #include "parser-defs.h" |
ef0b411a | 65 | #include "completer.h" |
5ed8105e | 66 | #include "progspace-and-thread.h" |
268a13a5 | 67 | #include "gdbsupport/gdb_optional.h" |
bbf2f4df | 68 | #include "filename-seen-cache.h" |
46a62268 | 69 | #include "arch-utils.h" |
b9c04fb2 | 70 | #include <algorithm> |
268a13a5 | 71 | #include "gdbsupport/pathstuff.h" |
ccefe4c4 | 72 | |
ff6c39cf | 73 | /* Forward declarations for local functions. */ |
c906108c | 74 | |
0b39b52e | 75 | static void rbreak_command (const char *, int); |
c906108c | 76 | |
f8eba3c6 | 77 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 78 | |
d12307c1 PMR |
79 | static struct block_symbol |
80 | lookup_symbol_aux (const char *name, | |
de63c46b | 81 | symbol_name_match_type match_type, |
d12307c1 PMR |
82 | const struct block *block, |
83 | const domain_enum domain, | |
84 | enum language language, | |
85 | struct field_of_this_result *); | |
fba7f19c | 86 | |
e4051eeb | 87 | static |
d12307c1 | 88 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 89 | symbol_name_match_type match_type, |
d12307c1 PMR |
90 | const struct block *block, |
91 | const domain_enum domain, | |
92 | enum language language); | |
8155455b | 93 | |
d12307c1 | 94 | static struct block_symbol |
c32e6a04 CB |
95 | lookup_symbol_in_objfile (struct objfile *objfile, |
96 | enum block_enum block_index, | |
fe2a438d | 97 | const char *name, const domain_enum domain); |
c906108c | 98 | |
32ac0d11 TT |
99 | /* Type of the data stored on the program space. */ |
100 | ||
101 | struct main_info | |
102 | { | |
a32ad8c5 TT |
103 | main_info () = default; |
104 | ||
105 | ~main_info () | |
106 | { | |
107 | xfree (name_of_main); | |
108 | } | |
109 | ||
32ac0d11 TT |
110 | /* Name of "main". */ |
111 | ||
a32ad8c5 | 112 | char *name_of_main = nullptr; |
32ac0d11 TT |
113 | |
114 | /* Language of "main". */ | |
115 | ||
a32ad8c5 | 116 | enum language language_of_main = language_unknown; |
32ac0d11 TT |
117 | }; |
118 | ||
a32ad8c5 TT |
119 | /* Program space key for finding name and language of "main". */ |
120 | ||
121 | static const program_space_key<main_info> main_progspace_key; | |
122 | ||
f57d2163 DE |
123 | /* The default symbol cache size. |
124 | There is no extra cpu cost for large N (except when flushing the cache, | |
125 | which is rare). The value here is just a first attempt. A better default | |
126 | value may be higher or lower. A prime number can make up for a bad hash | |
127 | computation, so that's why the number is what it is. */ | |
128 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
129 | ||
130 | /* The maximum symbol cache size. | |
131 | There's no method to the decision of what value to use here, other than | |
132 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
133 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
134 | ||
135 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
136 | symbol in any objfile. */ | |
d12307c1 PMR |
137 | #define SYMBOL_LOOKUP_FAILED \ |
138 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
139 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
140 | |
141 | /* Recording lookups that don't find the symbol is just as important, if not | |
142 | more so, than recording found symbols. */ | |
143 | ||
144 | enum symbol_cache_slot_state | |
145 | { | |
146 | SYMBOL_SLOT_UNUSED, | |
147 | SYMBOL_SLOT_NOT_FOUND, | |
148 | SYMBOL_SLOT_FOUND | |
149 | }; | |
150 | ||
52059ffd TT |
151 | struct symbol_cache_slot |
152 | { | |
153 | enum symbol_cache_slot_state state; | |
154 | ||
155 | /* The objfile that was current when the symbol was looked up. | |
156 | This is only needed for global blocks, but for simplicity's sake | |
157 | we allocate the space for both. If data shows the extra space used | |
158 | for static blocks is a problem, we can split things up then. | |
159 | ||
160 | Global blocks need cache lookup to include the objfile context because | |
161 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
162 | which can traverse objfiles in, effectively, any order, depending on | |
163 | the current objfile, thus affecting which symbol is found. Normally, | |
164 | only the current objfile is searched first, and then the rest are | |
165 | searched in recorded order; but putting cache lookup inside | |
166 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
167 | Instead we just make the current objfile part of the context of | |
168 | cache lookup. This means we can record the same symbol multiple times, | |
169 | each with a different "current objfile" that was in effect when the | |
170 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
171 | const struct objfile *objfile_context; | |
172 | ||
173 | union | |
174 | { | |
d12307c1 | 175 | struct block_symbol found; |
52059ffd TT |
176 | struct |
177 | { | |
178 | char *name; | |
179 | domain_enum domain; | |
180 | } not_found; | |
181 | } value; | |
182 | }; | |
183 | ||
f57d2163 DE |
184 | /* Symbols don't specify global vs static block. |
185 | So keep them in separate caches. */ | |
186 | ||
187 | struct block_symbol_cache | |
188 | { | |
189 | unsigned int hits; | |
190 | unsigned int misses; | |
191 | unsigned int collisions; | |
192 | ||
193 | /* SYMBOLS is a variable length array of this size. | |
194 | One can imagine that in general one cache (global/static) should be a | |
195 | fraction of the size of the other, but there's no data at the moment | |
196 | on which to decide. */ | |
197 | unsigned int size; | |
198 | ||
52059ffd | 199 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
200 | }; |
201 | ||
202 | /* The symbol cache. | |
203 | ||
204 | Searching for symbols in the static and global blocks over multiple objfiles | |
205 | again and again can be slow, as can searching very big objfiles. This is a | |
206 | simple cache to improve symbol lookup performance, which is critical to | |
207 | overall gdb performance. | |
208 | ||
209 | Symbols are hashed on the name, its domain, and block. | |
210 | They are also hashed on their objfile for objfile-specific lookups. */ | |
211 | ||
212 | struct symbol_cache | |
213 | { | |
3017b94d TT |
214 | symbol_cache () = default; |
215 | ||
216 | ~symbol_cache () | |
217 | { | |
218 | xfree (global_symbols); | |
219 | xfree (static_symbols); | |
220 | } | |
221 | ||
222 | struct block_symbol_cache *global_symbols = nullptr; | |
223 | struct block_symbol_cache *static_symbols = nullptr; | |
f57d2163 DE |
224 | }; |
225 | ||
3017b94d TT |
226 | /* Program space key for finding its symbol cache. */ |
227 | ||
228 | static const program_space_key<symbol_cache> symbol_cache_key; | |
229 | ||
45cfd468 | 230 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 231 | unsigned int symtab_create_debug = 0; |
45cfd468 | 232 | |
cc485e62 DE |
233 | /* When non-zero, print debugging messages related to symbol lookup. */ |
234 | unsigned int symbol_lookup_debug = 0; | |
235 | ||
f57d2163 DE |
236 | /* The size of the cache is staged here. */ |
237 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
238 | ||
239 | /* The current value of the symbol cache size. | |
240 | This is saved so that if the user enters a value too big we can restore | |
241 | the original value from here. */ | |
242 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
243 | ||
c011a4f4 DE |
244 | /* Non-zero if a file may be known by two different basenames. |
245 | This is the uncommon case, and significantly slows down gdb. | |
246 | Default set to "off" to not slow down the common case. */ | |
247 | int basenames_may_differ = 0; | |
248 | ||
717d2f5a JB |
249 | /* Allow the user to configure the debugger behavior with respect |
250 | to multiple-choice menus when more than one symbol matches during | |
251 | a symbol lookup. */ | |
252 | ||
7fc830e2 MK |
253 | const char multiple_symbols_ask[] = "ask"; |
254 | const char multiple_symbols_all[] = "all"; | |
255 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 256 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
257 | { |
258 | multiple_symbols_ask, | |
259 | multiple_symbols_all, | |
260 | multiple_symbols_cancel, | |
261 | NULL | |
262 | }; | |
263 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
264 | ||
265 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
266 | ||
267 | const char * | |
268 | multiple_symbols_select_mode (void) | |
269 | { | |
270 | return multiple_symbols_mode; | |
271 | } | |
272 | ||
20c681d1 DE |
273 | /* Return the name of a domain_enum. */ |
274 | ||
275 | const char * | |
276 | domain_name (domain_enum e) | |
277 | { | |
278 | switch (e) | |
279 | { | |
280 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
281 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
282 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 283 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
284 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
285 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
286 | default: gdb_assert_not_reached ("bad domain_enum"); | |
287 | } | |
288 | } | |
289 | ||
290 | /* Return the name of a search_domain . */ | |
291 | ||
292 | const char * | |
293 | search_domain_name (enum search_domain e) | |
294 | { | |
295 | switch (e) | |
296 | { | |
297 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
298 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
299 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
300 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
301 | default: gdb_assert_not_reached ("bad search_domain"); | |
302 | } | |
303 | } | |
304 | ||
43f3e411 | 305 | /* See symtab.h. */ |
db0fec5c | 306 | |
43f3e411 DE |
307 | struct symtab * |
308 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 309 | { |
43f3e411 | 310 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 311 | |
43f3e411 DE |
312 | /* The primary file symtab is the first one in the list. */ |
313 | return COMPUNIT_FILETABS (cust); | |
314 | } | |
315 | ||
316 | /* See symtab.h. */ | |
317 | ||
318 | enum language | |
319 | compunit_language (const struct compunit_symtab *cust) | |
320 | { | |
321 | struct symtab *symtab = compunit_primary_filetab (cust); | |
322 | ||
323 | /* The language of the compunit symtab is the language of its primary | |
324 | source file. */ | |
325 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
326 | } |
327 | ||
1ed9f74e PW |
328 | /* See symtab.h. */ |
329 | ||
330 | bool | |
331 | minimal_symbol::data_p () const | |
332 | { | |
333 | return type == mst_data | |
334 | || type == mst_bss | |
335 | || type == mst_abs | |
336 | || type == mst_file_data | |
337 | || type == mst_file_bss; | |
338 | } | |
339 | ||
340 | /* See symtab.h. */ | |
341 | ||
342 | bool | |
343 | minimal_symbol::text_p () const | |
344 | { | |
345 | return type == mst_text | |
346 | || type == mst_text_gnu_ifunc | |
347 | || type == mst_data_gnu_ifunc | |
348 | || type == mst_slot_got_plt | |
349 | || type == mst_solib_trampoline | |
350 | || type == mst_file_text; | |
351 | } | |
352 | ||
4aac40c8 TT |
353 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
354 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
355 | describes what we advertise). Returns true if they match, false |
356 | otherwise. */ | |
4aac40c8 TT |
357 | |
358 | int | |
b57a636e | 359 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
360 | { |
361 | int len = strlen (filename); | |
b57a636e | 362 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
363 | |
364 | if (len < search_len) | |
365 | return 0; | |
366 | ||
367 | /* The tail of FILENAME must match. */ | |
368 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
369 | return 0; | |
370 | ||
371 | /* Either the names must completely match, or the character | |
372 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
373 | directory separator. |
374 | ||
af529f8f JK |
375 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
376 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
377 | absolute path. The sama applies for "c:\file.c" possibly | |
378 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
379 | ||
d84fca2c JK |
380 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
381 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
382 | to put the "c:file.c" name into debug info. Such compatibility | |
383 | works only on GDB built for DOS host. */ | |
4aac40c8 | 384 | return (len == search_len |
af529f8f JK |
385 | || (!IS_ABSOLUTE_PATH (search_name) |
386 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
387 | || (HAS_DRIVE_SPEC (filename) |
388 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
389 | } | |
390 | ||
cce0e923 DE |
391 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
392 | Heads up on the order of the arguments. They match the order of | |
393 | compare_filenames_for_search, but it's the opposite of the order of | |
394 | arguments to gdb_filename_fnmatch. */ | |
395 | ||
396 | int | |
397 | compare_glob_filenames_for_search (const char *filename, | |
398 | const char *search_name) | |
399 | { | |
400 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
401 | all /s have to be explicitly specified. */ | |
402 | int file_path_elements = count_path_elements (filename); | |
403 | int search_path_elements = count_path_elements (search_name); | |
404 | ||
405 | if (search_path_elements > file_path_elements) | |
406 | return 0; | |
407 | ||
408 | if (IS_ABSOLUTE_PATH (search_name)) | |
409 | { | |
410 | return (search_path_elements == file_path_elements | |
411 | && gdb_filename_fnmatch (search_name, filename, | |
412 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
413 | } | |
414 | ||
415 | { | |
416 | const char *file_to_compare | |
417 | = strip_leading_path_elements (filename, | |
418 | file_path_elements - search_path_elements); | |
419 | ||
420 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
421 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
422 | } | |
423 | } | |
424 | ||
f8eba3c6 TT |
425 | /* Check for a symtab of a specific name by searching some symtabs. |
426 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 427 | |
b2d23133 DE |
428 | If NAME is not absolute, then REAL_PATH is NULL |
429 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
430 | ||
14bc53a8 PA |
431 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
432 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 433 | |
43f3e411 DE |
434 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
435 | Each symtab within the specified compunit symtab is also searched. | |
436 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
437 | search until the end of the list. */ |
438 | ||
14bc53a8 | 439 | bool |
f8eba3c6 | 440 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 441 | const char *real_path, |
43f3e411 | 442 | struct compunit_symtab *first, |
14bc53a8 PA |
443 | struct compunit_symtab *after_last, |
444 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 445 | { |
43f3e411 | 446 | struct compunit_symtab *cust; |
c011a4f4 | 447 | const char* base_name = lbasename (name); |
1f84b619 | 448 | |
43f3e411 | 449 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 450 | { |
5accd1a0 | 451 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 452 | { |
43f3e411 DE |
453 | if (compare_filenames_for_search (s->filename, name)) |
454 | { | |
14bc53a8 PA |
455 | if (callback (s)) |
456 | return true; | |
43f3e411 DE |
457 | continue; |
458 | } | |
a94e8645 | 459 | |
43f3e411 DE |
460 | /* Before we invoke realpath, which can get expensive when many |
461 | files are involved, do a quick comparison of the basenames. */ | |
462 | if (! basenames_may_differ | |
463 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
464 | continue; | |
a94e8645 | 465 | |
43f3e411 | 466 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 467 | { |
14bc53a8 PA |
468 | if (callback (s)) |
469 | return true; | |
a94e8645 DE |
470 | continue; |
471 | } | |
43f3e411 DE |
472 | |
473 | /* If the user gave us an absolute path, try to find the file in | |
474 | this symtab and use its absolute path. */ | |
475 | if (real_path != NULL) | |
476 | { | |
477 | const char *fullname = symtab_to_fullname (s); | |
478 | ||
479 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
480 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
481 | if (FILENAME_CMP (real_path, fullname) == 0) | |
482 | { | |
14bc53a8 PA |
483 | if (callback (s)) |
484 | return true; | |
43f3e411 DE |
485 | continue; |
486 | } | |
487 | } | |
a94e8645 | 488 | } |
f8eba3c6 | 489 | } |
58d370e0 | 490 | |
14bc53a8 | 491 | return false; |
f8eba3c6 TT |
492 | } |
493 | ||
494 | /* Check for a symtab of a specific name; first in symtabs, then in | |
495 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
496 | in the symtab filename will also work. | |
497 | ||
14bc53a8 PA |
498 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
499 | true, the search stops. */ | |
f8eba3c6 TT |
500 | |
501 | void | |
502 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 503 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 504 | { |
14bc53a8 | 505 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
506 | |
507 | /* Here we are interested in canonicalizing an absolute path, not | |
508 | absolutizing a relative path. */ | |
509 | if (IS_ABSOLUTE_PATH (name)) | |
510 | { | |
14278e1f | 511 | real_path = gdb_realpath (name); |
14bc53a8 | 512 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
513 | } |
514 | ||
2030c079 | 515 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
516 | { |
517 | if (iterate_over_some_symtabs (name, real_path.get (), | |
518 | objfile->compunit_symtabs, NULL, | |
519 | callback)) | |
f8eba3c6 | 520 | return; |
14bc53a8 | 521 | } |
f8eba3c6 | 522 | |
c906108c SS |
523 | /* Same search rules as above apply here, but now we look thru the |
524 | psymtabs. */ | |
525 | ||
2030c079 | 526 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
527 | { |
528 | if (objfile->sf | |
529 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
530 | name, | |
531 | real_path.get (), | |
532 | callback)) | |
f8eba3c6 | 533 | return; |
14bc53a8 | 534 | } |
c906108c | 535 | } |
f8eba3c6 TT |
536 | |
537 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
538 | symtab, or NULL. */ | |
539 | ||
540 | struct symtab * | |
541 | lookup_symtab (const char *name) | |
542 | { | |
543 | struct symtab *result = NULL; | |
544 | ||
14bc53a8 PA |
545 | iterate_over_symtabs (name, [&] (symtab *symtab) |
546 | { | |
547 | result = symtab; | |
548 | return true; | |
549 | }); | |
550 | ||
f8eba3c6 TT |
551 | return result; |
552 | } | |
553 | ||
c906108c SS |
554 | \f |
555 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
556 | full method name, which consist of the class name (from T), the unadorned | |
557 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 558 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
559 | |
560 | char * | |
fba45db2 | 561 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
562 | { |
563 | int mangled_name_len; | |
564 | char *mangled_name; | |
565 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
566 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 567 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 568 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 569 | const char *newname = TYPE_NAME (type); |
c906108c SS |
570 | |
571 | /* Does the form of physname indicate that it is the full mangled name | |
572 | of a constructor (not just the args)? */ | |
573 | int is_full_physname_constructor; | |
574 | ||
575 | int is_constructor; | |
015a42b4 | 576 | int is_destructor = is_destructor_name (physname); |
c906108c | 577 | /* Need a new type prefix. */ |
e6a959d6 PA |
578 | const char *const_prefix = method->is_const ? "C" : ""; |
579 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
580 | char buf[20]; |
581 | int len = (newname == NULL ? 0 : strlen (newname)); | |
582 | ||
43630227 PS |
583 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
584 | or an operator name. */ | |
585 | if ((physname[0] == '_' && physname[1] == 'Z') | |
586 | || is_operator_name (field_name)) | |
235d1e03 EZ |
587 | return xstrdup (physname); |
588 | ||
015a42b4 | 589 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 590 | |
3e43a32a MS |
591 | is_constructor = is_full_physname_constructor |
592 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
593 | |
594 | if (!is_destructor) | |
61012eef | 595 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
596 | |
597 | if (is_destructor || is_full_physname_constructor) | |
598 | { | |
c5aa993b JM |
599 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
600 | strcpy (mangled_name, physname); | |
c906108c SS |
601 | return mangled_name; |
602 | } | |
603 | ||
604 | if (len == 0) | |
605 | { | |
8c042590 | 606 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
607 | } |
608 | else if (physname[0] == 't' || physname[0] == 'Q') | |
609 | { | |
610 | /* The physname for template and qualified methods already includes | |
c5aa993b | 611 | the class name. */ |
8c042590 | 612 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
613 | newname = NULL; |
614 | len = 0; | |
615 | } | |
616 | else | |
617 | { | |
8c042590 PM |
618 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
619 | volatile_prefix, len); | |
c906108c SS |
620 | } |
621 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 622 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 623 | |
433759f7 MS |
624 | mangled_name = (char *) xmalloc (mangled_name_len); |
625 | if (is_constructor) | |
626 | mangled_name[0] = '\0'; | |
627 | else | |
628 | strcpy (mangled_name, field_name); | |
629 | ||
c906108c SS |
630 | strcat (mangled_name, buf); |
631 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
632 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 633 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
634 | if (newname != NULL) |
635 | strcat (mangled_name, newname); | |
636 | ||
637 | strcat (mangled_name, physname); | |
638 | return (mangled_name); | |
639 | } | |
12af6855 | 640 | |
b250c185 | 641 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 642 | correctly allocated. */ |
eca864fe | 643 | |
b250c185 SW |
644 | void |
645 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 646 | const char *name, |
ccde22c0 | 647 | struct obstack *obstack) |
b250c185 | 648 | { |
7c5fdd25 | 649 | if (gsymbol->language == language_ada) |
f85f34ed TT |
650 | { |
651 | if (name == NULL) | |
652 | { | |
653 | gsymbol->ada_mangled = 0; | |
654 | gsymbol->language_specific.obstack = obstack; | |
655 | } | |
656 | else | |
657 | { | |
658 | gsymbol->ada_mangled = 1; | |
615b3f62 | 659 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
660 | } |
661 | } | |
29df156d | 662 | else |
615b3f62 | 663 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
664 | } |
665 | ||
666 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 667 | |
0d5cff50 | 668 | const char * |
b250c185 SW |
669 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
670 | { | |
7c5fdd25 | 671 | if (gsymbol->language == language_ada) |
f85f34ed TT |
672 | { |
673 | if (!gsymbol->ada_mangled) | |
674 | return NULL; | |
675 | /* Fall through. */ | |
676 | } | |
677 | ||
615b3f62 | 678 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
679 | } |
680 | ||
12af6855 | 681 | \f |
89aad1f9 | 682 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 683 | depending upon the language for the symbol. */ |
eca864fe | 684 | |
89aad1f9 | 685 | void |
33e5013e | 686 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
687 | enum language language, |
688 | struct obstack *obstack) | |
89aad1f9 EZ |
689 | { |
690 | gsymbol->language = language; | |
7c5fdd25 DE |
691 | if (gsymbol->language == language_cplus |
692 | || gsymbol->language == language_d | |
a766d390 | 693 | || gsymbol->language == language_go |
f55ee35c JK |
694 | || gsymbol->language == language_objc |
695 | || gsymbol->language == language_fortran) | |
89aad1f9 | 696 | { |
f85f34ed TT |
697 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
698 | } | |
699 | else if (gsymbol->language == language_ada) | |
700 | { | |
701 | gdb_assert (gsymbol->ada_mangled == 0); | |
702 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 703 | } |
89aad1f9 EZ |
704 | else |
705 | { | |
706 | memset (&gsymbol->language_specific, 0, | |
707 | sizeof (gsymbol->language_specific)); | |
708 | } | |
709 | } | |
710 | ||
2de7ced7 DJ |
711 | /* Functions to initialize a symbol's mangled name. */ |
712 | ||
04a679b8 TT |
713 | /* Objects of this type are stored in the demangled name hash table. */ |
714 | struct demangled_name_entry | |
715 | { | |
9d2ceabe | 716 | const char *mangled; |
e99f9db0 | 717 | ENUM_BITFIELD(language) language : LANGUAGE_BITS; |
04a679b8 TT |
718 | char demangled[1]; |
719 | }; | |
720 | ||
721 | /* Hash function for the demangled name hash. */ | |
eca864fe | 722 | |
04a679b8 TT |
723 | static hashval_t |
724 | hash_demangled_name_entry (const void *data) | |
725 | { | |
19ba03f4 SM |
726 | const struct demangled_name_entry *e |
727 | = (const struct demangled_name_entry *) data; | |
433759f7 | 728 | |
04a679b8 TT |
729 | return htab_hash_string (e->mangled); |
730 | } | |
731 | ||
732 | /* Equality function for the demangled name hash. */ | |
eca864fe | 733 | |
04a679b8 TT |
734 | static int |
735 | eq_demangled_name_entry (const void *a, const void *b) | |
736 | { | |
19ba03f4 SM |
737 | const struct demangled_name_entry *da |
738 | = (const struct demangled_name_entry *) a; | |
739 | const struct demangled_name_entry *db | |
740 | = (const struct demangled_name_entry *) b; | |
433759f7 | 741 | |
04a679b8 TT |
742 | return strcmp (da->mangled, db->mangled) == 0; |
743 | } | |
744 | ||
2de7ced7 DJ |
745 | /* Create the hash table used for demangled names. Each hash entry is |
746 | a pair of strings; one for the mangled name and one for the demangled | |
747 | name. The entry is hashed via just the mangled name. */ | |
748 | ||
749 | static void | |
0f14768a | 750 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
751 | { |
752 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 753 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
754 | Choosing a much larger table size wastes memory, and saves only about |
755 | 1% in symbol reading. */ | |
756 | ||
db92718b | 757 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
04a679b8 | 758 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
db92718b | 759 | NULL, xcalloc, xfree)); |
2de7ced7 | 760 | } |
12af6855 | 761 | |
2de7ced7 | 762 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
763 | language of that symbol. If the language is set to language_auto, |
764 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
765 | then set the language appropriately. The returned name is allocated |
766 | by the demangler and should be xfree'd. */ | |
12af6855 | 767 | |
2de7ced7 DJ |
768 | static char * |
769 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
770 | const char *mangled) | |
12af6855 | 771 | { |
12af6855 | 772 | char *demangled = NULL; |
8b302db8 | 773 | int i; |
12af6855 JB |
774 | |
775 | if (gsymbol->language == language_unknown) | |
776 | gsymbol->language = language_auto; | |
1bae87b9 | 777 | |
8b302db8 | 778 | if (gsymbol->language != language_auto) |
1bae87b9 | 779 | { |
8b302db8 TT |
780 | const struct language_defn *lang = language_def (gsymbol->language); |
781 | ||
782 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
783 | return demangled; | |
6aecb9c2 | 784 | } |
8b302db8 TT |
785 | |
786 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 787 | { |
8b302db8 TT |
788 | enum language l = (enum language) i; |
789 | const struct language_defn *lang = language_def (l); | |
790 | ||
791 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 792 | { |
8b302db8 | 793 | gsymbol->language = l; |
a766d390 DE |
794 | return demangled; |
795 | } | |
796 | } | |
797 | ||
2de7ced7 DJ |
798 | return NULL; |
799 | } | |
800 | ||
980cae7a | 801 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
802 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
803 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
804 | NUL-terminated, then this function assumes that NAME is already | |
805 | correctly saved (either permanently or with a lifetime tied to the | |
806 | objfile), and it will not be copied. | |
807 | ||
808 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 809 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 810 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
811 | |
812 | void | |
813 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 | 814 | const char *linkage_name, int len, int copy_name, |
1d94a5a3 | 815 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 816 | { |
04a679b8 | 817 | struct demangled_name_entry **slot; |
980cae7a DC |
818 | /* A 0-terminated copy of the linkage name. */ |
819 | const char *linkage_name_copy; | |
04a679b8 | 820 | struct demangled_name_entry entry; |
2de7ced7 | 821 | |
b06ead72 JB |
822 | if (gsymbol->language == language_ada) |
823 | { | |
824 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 825 | we can save some space by not storing the demangled name. */ |
04a679b8 | 826 | if (!copy_name) |
0d5cff50 | 827 | gsymbol->name = linkage_name; |
04a679b8 TT |
828 | else |
829 | { | |
224c3ddb SM |
830 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
831 | len + 1); | |
0d5cff50 DE |
832 | |
833 | memcpy (name, linkage_name, len); | |
834 | name[len] = '\0'; | |
835 | gsymbol->name = name; | |
04a679b8 | 836 | } |
84a1243b | 837 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
838 | |
839 | return; | |
840 | } | |
841 | ||
84a1243b | 842 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 843 | create_demangled_names_hash (per_bfd); |
04a679b8 | 844 | |
9c37b5ae | 845 | if (linkage_name[len] != '\0') |
2de7ced7 | 846 | { |
980cae7a DC |
847 | char *alloc_name; |
848 | ||
9c37b5ae | 849 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 850 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 851 | alloc_name[len] = '\0'; |
980cae7a DC |
852 | |
853 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
854 | } |
855 | else | |
9c37b5ae | 856 | linkage_name_copy = linkage_name; |
2de7ced7 | 857 | |
9c37b5ae | 858 | entry.mangled = linkage_name_copy; |
04a679b8 | 859 | slot = ((struct demangled_name_entry **) |
db92718b | 860 | htab_find_slot (per_bfd->demangled_names_hash.get (), |
04a679b8 | 861 | &entry, INSERT)); |
2de7ced7 DJ |
862 | |
863 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
864 | if (*slot == NULL |
865 | /* A C version of the symbol may have already snuck into the table. | |
866 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
867 | || (gsymbol->language == language_go | |
868 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 869 | { |
e99f9db0 TV |
870 | char *demangled_name_ptr |
871 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
872 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
9325300d | 873 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 874 | |
04a679b8 | 875 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 876 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
877 | mangled name saved, and we don't have a demangled name. So, |
878 | you might think we could save a little space by not recording | |
879 | this in the hash table at all. | |
880 | ||
881 | It turns out that it is actually important to still save such | |
882 | an entry in the hash table, because storing this name gives | |
705b5767 | 883 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 884 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 885 | { |
224c3ddb SM |
886 | *slot |
887 | = ((struct demangled_name_entry *) | |
888 | obstack_alloc (&per_bfd->storage_obstack, | |
889 | offsetof (struct demangled_name_entry, demangled) | |
890 | + demangled_len + 1)); | |
9c37b5ae | 891 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
892 | } |
893 | else | |
894 | { | |
9d2ceabe TT |
895 | char *mangled_ptr; |
896 | ||
04a679b8 TT |
897 | /* If we must copy the mangled name, put it directly after |
898 | the demangled name so we can have a single | |
899 | allocation. */ | |
224c3ddb SM |
900 | *slot |
901 | = ((struct demangled_name_entry *) | |
902 | obstack_alloc (&per_bfd->storage_obstack, | |
903 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 904 | + len + demangled_len + 2)); |
9d2ceabe | 905 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 906 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 907 | (*slot)->mangled = mangled_ptr; |
04a679b8 | 908 | } |
e99f9db0 | 909 | (*slot)->language = gsymbol->language; |
04a679b8 | 910 | |
980cae7a | 911 | if (demangled_name != NULL) |
e99f9db0 | 912 | strcpy ((*slot)->demangled, demangled_name.get ()); |
2de7ced7 | 913 | else |
04a679b8 | 914 | (*slot)->demangled[0] = '\0'; |
2de7ced7 | 915 | } |
e99f9db0 TV |
916 | else if (gsymbol->language == language_unknown |
917 | || gsymbol->language == language_auto) | |
918 | gsymbol->language = (*slot)->language; | |
2de7ced7 | 919 | |
9c37b5ae | 920 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 921 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 922 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 923 | &per_bfd->storage_obstack); |
2de7ced7 | 924 | else |
84a1243b | 925 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
926 | } |
927 | ||
22abf04a DC |
928 | /* Return the source code name of a symbol. In languages where |
929 | demangling is necessary, this is the demangled name. */ | |
930 | ||
0d5cff50 | 931 | const char * |
22abf04a DC |
932 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
933 | { | |
9af17804 | 934 | switch (gsymbol->language) |
22abf04a | 935 | { |
1f8173e6 | 936 | case language_cplus: |
6aecb9c2 | 937 | case language_d: |
a766d390 | 938 | case language_go: |
1f8173e6 | 939 | case language_objc: |
f55ee35c | 940 | case language_fortran: |
b250c185 SW |
941 | if (symbol_get_demangled_name (gsymbol) != NULL) |
942 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
943 | break; |
944 | case language_ada: | |
f85f34ed | 945 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
946 | default: |
947 | break; | |
22abf04a | 948 | } |
1f8173e6 | 949 | return gsymbol->name; |
22abf04a DC |
950 | } |
951 | ||
9cc0d196 | 952 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 953 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 954 | |
0d5cff50 | 955 | const char * |
df8a16a1 | 956 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 957 | { |
c6e5ee5e SDJ |
958 | const char *dem_name = NULL; |
959 | ||
9af17804 | 960 | switch (gsymbol->language) |
1f8173e6 PH |
961 | { |
962 | case language_cplus: | |
6aecb9c2 | 963 | case language_d: |
a766d390 | 964 | case language_go: |
1f8173e6 | 965 | case language_objc: |
f55ee35c | 966 | case language_fortran: |
c6e5ee5e | 967 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
968 | break; |
969 | case language_ada: | |
f85f34ed | 970 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
971 | break; |
972 | default: | |
973 | break; | |
974 | } | |
c6e5ee5e | 975 | return dem_name; |
9cc0d196 | 976 | } |
fe39c653 | 977 | |
4725b721 PH |
978 | /* Return the search name of a symbol---generally the demangled or |
979 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 980 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 981 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 982 | |
0d5cff50 | 983 | const char * |
fc062ac6 JB |
984 | symbol_search_name (const struct general_symbol_info *gsymbol) |
985 | { | |
1f8173e6 PH |
986 | if (gsymbol->language == language_ada) |
987 | return gsymbol->name; | |
988 | else | |
989 | return symbol_natural_name (gsymbol); | |
4725b721 | 990 | } |
b5ec771e PA |
991 | |
992 | /* See symtab.h. */ | |
993 | ||
994 | bool | |
995 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
996 | const lookup_name_info &name) | |
997 | { | |
998 | symbol_name_matcher_ftype *name_match | |
618daa93 | 999 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
1000 | return name_match (symbol_search_name (gsymbol), name, NULL); |
1001 | } | |
1002 | ||
c906108c SS |
1003 | \f |
1004 | ||
94277a38 DJ |
1005 | /* Return 1 if the two sections are the same, or if they could |
1006 | plausibly be copies of each other, one in an original object | |
1007 | file and another in a separated debug file. */ | |
1008 | ||
1009 | int | |
714835d5 UW |
1010 | matching_obj_sections (struct obj_section *obj_first, |
1011 | struct obj_section *obj_second) | |
94277a38 | 1012 | { |
714835d5 UW |
1013 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1014 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1015 | |
1016 | /* If they're the same section, then they match. */ | |
1017 | if (first == second) | |
1018 | return 1; | |
1019 | ||
1020 | /* If either is NULL, give up. */ | |
1021 | if (first == NULL || second == NULL) | |
1022 | return 0; | |
1023 | ||
1024 | /* This doesn't apply to absolute symbols. */ | |
1025 | if (first->owner == NULL || second->owner == NULL) | |
1026 | return 0; | |
1027 | ||
1028 | /* If they're in the same object file, they must be different sections. */ | |
1029 | if (first->owner == second->owner) | |
1030 | return 0; | |
1031 | ||
1032 | /* Check whether the two sections are potentially corresponding. They must | |
1033 | have the same size, address, and name. We can't compare section indexes, | |
1034 | which would be more reliable, because some sections may have been | |
1035 | stripped. */ | |
1036 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
1037 | return 0; | |
1038 | ||
818f79f6 | 1039 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 1040 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
1041 | - bfd_get_start_address (first->owner) |
1042 | != bfd_get_section_vma (second->owner, second) | |
1043 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1044 | return 0; |
1045 | ||
1046 | if (bfd_get_section_name (first->owner, first) == NULL | |
1047 | || bfd_get_section_name (second->owner, second) == NULL | |
1048 | || strcmp (bfd_get_section_name (first->owner, first), | |
1049 | bfd_get_section_name (second->owner, second)) != 0) | |
1050 | return 0; | |
1051 | ||
1052 | /* Otherwise check that they are in corresponding objfiles. */ | |
1053 | ||
9d7c67bf | 1054 | struct objfile *obj = NULL; |
2030c079 | 1055 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1056 | if (objfile->obfd == first->owner) |
1057 | { | |
1058 | obj = objfile; | |
1059 | break; | |
1060 | } | |
94277a38 DJ |
1061 | gdb_assert (obj != NULL); |
1062 | ||
1063 | if (obj->separate_debug_objfile != NULL | |
1064 | && obj->separate_debug_objfile->obfd == second->owner) | |
1065 | return 1; | |
1066 | if (obj->separate_debug_objfile_backlink != NULL | |
1067 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1068 | return 1; | |
1069 | ||
1070 | return 0; | |
1071 | } | |
c5aa993b | 1072 | |
2097ae25 DE |
1073 | /* See symtab.h. */ |
1074 | ||
1075 | void | |
1076 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1077 | { |
77e371c0 | 1078 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1079 | |
1080 | /* If we know that this is not a text address, return failure. This is | |
1081 | necessary because we loop based on texthigh and textlow, which do | |
1082 | not include the data ranges. */ | |
77e371c0 | 1083 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1084 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1085 | return; |
c906108c | 1086 | |
2030c079 | 1087 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1088 | { |
1089 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1090 | |
aed57c53 TT |
1091 | if (objfile->sf) |
1092 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1093 | pc, section, 0); | |
1094 | if (cust) | |
1095 | return; | |
1096 | } | |
c906108c | 1097 | } |
c906108c | 1098 | \f |
f57d2163 DE |
1099 | /* Hash function for the symbol cache. */ |
1100 | ||
1101 | static unsigned int | |
1102 | hash_symbol_entry (const struct objfile *objfile_context, | |
1103 | const char *name, domain_enum domain) | |
1104 | { | |
1105 | unsigned int hash = (uintptr_t) objfile_context; | |
1106 | ||
1107 | if (name != NULL) | |
1108 | hash += htab_hash_string (name); | |
1109 | ||
2c26b84f DE |
1110 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1111 | to map to the same slot. */ | |
1112 | if (domain == STRUCT_DOMAIN) | |
1113 | hash += VAR_DOMAIN * 7; | |
1114 | else | |
1115 | hash += domain * 7; | |
f57d2163 DE |
1116 | |
1117 | return hash; | |
1118 | } | |
1119 | ||
1120 | /* Equality function for the symbol cache. */ | |
1121 | ||
1122 | static int | |
1123 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1124 | const struct objfile *objfile_context, | |
1125 | const char *name, domain_enum domain) | |
1126 | { | |
1127 | const char *slot_name; | |
1128 | domain_enum slot_domain; | |
1129 | ||
1130 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1131 | return 0; | |
1132 | ||
1133 | if (slot->objfile_context != objfile_context) | |
1134 | return 0; | |
1135 | ||
1136 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1137 | { | |
1138 | slot_name = slot->value.not_found.name; | |
1139 | slot_domain = slot->value.not_found.domain; | |
1140 | } | |
1141 | else | |
1142 | { | |
d12307c1 PMR |
1143 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1144 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1145 | } |
1146 | ||
1147 | /* NULL names match. */ | |
1148 | if (slot_name == NULL && name == NULL) | |
1149 | { | |
1150 | /* But there's no point in calling symbol_matches_domain in the | |
1151 | SYMBOL_SLOT_FOUND case. */ | |
1152 | if (slot_domain != domain) | |
1153 | return 0; | |
1154 | } | |
1155 | else if (slot_name != NULL && name != NULL) | |
1156 | { | |
b5ec771e PA |
1157 | /* It's important that we use the same comparison that was done |
1158 | the first time through. If the slot records a found symbol, | |
1159 | then this means using the symbol name comparison function of | |
1160 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1161 | dictionary.c. It also means using symbol_matches_domain for | |
1162 | found symbols. See block.c. | |
f57d2163 DE |
1163 | |
1164 | If the slot records a not-found symbol, then require a precise match. | |
1165 | We could still be lax with whitespace like strcmp_iw though. */ | |
1166 | ||
1167 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1168 | { | |
1169 | if (strcmp (slot_name, name) != 0) | |
1170 | return 0; | |
1171 | if (slot_domain != domain) | |
1172 | return 0; | |
1173 | } | |
1174 | else | |
1175 | { | |
d12307c1 | 1176 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1177 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1178 | |
b5ec771e | 1179 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1180 | return 0; |
b5ec771e | 1181 | |
f57d2163 DE |
1182 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1183 | slot_domain, domain)) | |
1184 | return 0; | |
1185 | } | |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | /* Only one name is NULL. */ | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | return 1; | |
1194 | } | |
1195 | ||
1196 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1197 | length array) in bytes. */ | |
1198 | ||
1199 | static size_t | |
1200 | symbol_cache_byte_size (unsigned int size) | |
1201 | { | |
1202 | return (sizeof (struct block_symbol_cache) | |
1203 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1204 | } | |
1205 | ||
1206 | /* Resize CACHE. */ | |
1207 | ||
1208 | static void | |
1209 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1210 | { | |
1211 | /* If there's no change in size, don't do anything. | |
1212 | All caches have the same size, so we can just compare with the size | |
1213 | of the global symbols cache. */ | |
1214 | if ((cache->global_symbols != NULL | |
1215 | && cache->global_symbols->size == new_size) | |
1216 | || (cache->global_symbols == NULL | |
1217 | && new_size == 0)) | |
1218 | return; | |
1219 | ||
1220 | xfree (cache->global_symbols); | |
1221 | xfree (cache->static_symbols); | |
1222 | ||
1223 | if (new_size == 0) | |
1224 | { | |
1225 | cache->global_symbols = NULL; | |
1226 | cache->static_symbols = NULL; | |
1227 | } | |
1228 | else | |
1229 | { | |
1230 | size_t total_size = symbol_cache_byte_size (new_size); | |
1231 | ||
224c3ddb SM |
1232 | cache->global_symbols |
1233 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1234 | cache->static_symbols | |
1235 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1236 | cache->global_symbols->size = new_size; |
1237 | cache->static_symbols->size = new_size; | |
1238 | } | |
1239 | } | |
1240 | ||
f57d2163 DE |
1241 | /* Return the symbol cache of PSPACE. |
1242 | Create one if it doesn't exist yet. */ | |
1243 | ||
1244 | static struct symbol_cache * | |
1245 | get_symbol_cache (struct program_space *pspace) | |
1246 | { | |
3017b94d | 1247 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1248 | |
1249 | if (cache == NULL) | |
1250 | { | |
3017b94d TT |
1251 | cache = symbol_cache_key.emplace (pspace); |
1252 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1253 | } |
1254 | ||
1255 | return cache; | |
1256 | } | |
1257 | ||
f57d2163 DE |
1258 | /* Set the size of the symbol cache in all program spaces. */ |
1259 | ||
1260 | static void | |
1261 | set_symbol_cache_size (unsigned int new_size) | |
1262 | { | |
1263 | struct program_space *pspace; | |
1264 | ||
1265 | ALL_PSPACES (pspace) | |
1266 | { | |
3017b94d | 1267 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1268 | |
1269 | /* The pspace could have been created but not have a cache yet. */ | |
1270 | if (cache != NULL) | |
1271 | resize_symbol_cache (cache, new_size); | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | /* Called when symbol-cache-size is set. */ | |
1276 | ||
1277 | static void | |
eb4c3f4a | 1278 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1279 | struct cmd_list_element *c) |
1280 | { | |
1281 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1282 | { | |
1283 | /* Restore the previous value. | |
1284 | This is the value the "show" command prints. */ | |
1285 | new_symbol_cache_size = symbol_cache_size; | |
1286 | ||
1287 | error (_("Symbol cache size is too large, max is %u."), | |
1288 | MAX_SYMBOL_CACHE_SIZE); | |
1289 | } | |
1290 | symbol_cache_size = new_symbol_cache_size; | |
1291 | ||
1292 | set_symbol_cache_size (symbol_cache_size); | |
1293 | } | |
1294 | ||
1295 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1296 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1297 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1298 | failed (and thus this one will too), or NULL if the symbol is not present | |
1299 | in the cache. | |
2c26b84f DE |
1300 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1301 | set to the cache and slot of the symbol to save the result of a full lookup | |
1302 | attempt. */ | |
f57d2163 | 1303 | |
d12307c1 | 1304 | static struct block_symbol |
f57d2163 | 1305 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1306 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1307 | const char *name, domain_enum domain, |
1308 | struct block_symbol_cache **bsc_ptr, | |
1309 | struct symbol_cache_slot **slot_ptr) | |
1310 | { | |
1311 | struct block_symbol_cache *bsc; | |
1312 | unsigned int hash; | |
1313 | struct symbol_cache_slot *slot; | |
1314 | ||
1315 | if (block == GLOBAL_BLOCK) | |
1316 | bsc = cache->global_symbols; | |
1317 | else | |
1318 | bsc = cache->static_symbols; | |
1319 | if (bsc == NULL) | |
1320 | { | |
1321 | *bsc_ptr = NULL; | |
1322 | *slot_ptr = NULL; | |
6640a367 | 1323 | return {}; |
f57d2163 DE |
1324 | } |
1325 | ||
1326 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1327 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1328 | |
1329 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1330 | { | |
1331 | if (symbol_lookup_debug) | |
1332 | fprintf_unfiltered (gdb_stdlog, | |
1333 | "%s block symbol cache hit%s for %s, %s\n", | |
1334 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1335 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1336 | ? " (not found)" : "", | |
1337 | name, domain_name (domain)); | |
1338 | ++bsc->hits; | |
1339 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1340 | return SYMBOL_LOOKUP_FAILED; | |
1341 | return slot->value.found; | |
1342 | } | |
1343 | ||
2c26b84f DE |
1344 | /* Symbol is not present in the cache. */ |
1345 | ||
1346 | *bsc_ptr = bsc; | |
1347 | *slot_ptr = slot; | |
1348 | ||
f57d2163 DE |
1349 | if (symbol_lookup_debug) |
1350 | { | |
1351 | fprintf_unfiltered (gdb_stdlog, | |
1352 | "%s block symbol cache miss for %s, %s\n", | |
1353 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1354 | name, domain_name (domain)); | |
1355 | } | |
1356 | ++bsc->misses; | |
6640a367 | 1357 | return {}; |
f57d2163 DE |
1358 | } |
1359 | ||
1360 | /* Clear out SLOT. */ | |
1361 | ||
1362 | static void | |
1363 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1364 | { | |
1365 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1366 | xfree (slot->value.not_found.name); | |
1367 | slot->state = SYMBOL_SLOT_UNUSED; | |
1368 | } | |
1369 | ||
1370 | /* Mark SYMBOL as found in SLOT. | |
1371 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1372 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1373 | necessarily the objfile the symbol was found in. */ | |
1374 | ||
1375 | static void | |
1376 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1377 | struct symbol_cache_slot *slot, | |
1378 | struct objfile *objfile_context, | |
d12307c1 PMR |
1379 | struct symbol *symbol, |
1380 | const struct block *block) | |
f57d2163 DE |
1381 | { |
1382 | if (bsc == NULL) | |
1383 | return; | |
1384 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1385 | { | |
1386 | ++bsc->collisions; | |
1387 | symbol_cache_clear_slot (slot); | |
1388 | } | |
1389 | slot->state = SYMBOL_SLOT_FOUND; | |
1390 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1391 | slot->value.found.symbol = symbol; |
1392 | slot->value.found.block = block; | |
f57d2163 DE |
1393 | } |
1394 | ||
1395 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1396 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1397 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1398 | ||
1399 | static void | |
1400 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1401 | struct symbol_cache_slot *slot, | |
1402 | struct objfile *objfile_context, | |
1403 | const char *name, domain_enum domain) | |
1404 | { | |
1405 | if (bsc == NULL) | |
1406 | return; | |
1407 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1408 | { | |
1409 | ++bsc->collisions; | |
1410 | symbol_cache_clear_slot (slot); | |
1411 | } | |
1412 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1413 | slot->objfile_context = objfile_context; | |
1414 | slot->value.not_found.name = xstrdup (name); | |
1415 | slot->value.not_found.domain = domain; | |
1416 | } | |
1417 | ||
1418 | /* Flush the symbol cache of PSPACE. */ | |
1419 | ||
1420 | static void | |
1421 | symbol_cache_flush (struct program_space *pspace) | |
1422 | { | |
3017b94d | 1423 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1424 | int pass; |
f57d2163 DE |
1425 | |
1426 | if (cache == NULL) | |
1427 | return; | |
1428 | if (cache->global_symbols == NULL) | |
1429 | { | |
1430 | gdb_assert (symbol_cache_size == 0); | |
1431 | gdb_assert (cache->static_symbols == NULL); | |
1432 | return; | |
1433 | } | |
1434 | ||
1435 | /* If the cache is untouched since the last flush, early exit. | |
1436 | This is important for performance during the startup of a program linked | |
1437 | with 100s (or 1000s) of shared libraries. */ | |
1438 | if (cache->global_symbols->misses == 0 | |
1439 | && cache->static_symbols->misses == 0) | |
1440 | return; | |
1441 | ||
1442 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1443 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1444 | ||
1445 | for (pass = 0; pass < 2; ++pass) | |
1446 | { | |
1447 | struct block_symbol_cache *bsc | |
1448 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1449 | unsigned int i; | |
1450 | ||
1451 | for (i = 0; i < bsc->size; ++i) | |
1452 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1453 | } | |
1454 | ||
1455 | cache->global_symbols->hits = 0; | |
1456 | cache->global_symbols->misses = 0; | |
1457 | cache->global_symbols->collisions = 0; | |
1458 | cache->static_symbols->hits = 0; | |
1459 | cache->static_symbols->misses = 0; | |
1460 | cache->static_symbols->collisions = 0; | |
1461 | } | |
1462 | ||
1463 | /* Dump CACHE. */ | |
1464 | ||
1465 | static void | |
1466 | symbol_cache_dump (const struct symbol_cache *cache) | |
1467 | { | |
1468 | int pass; | |
1469 | ||
1470 | if (cache->global_symbols == NULL) | |
1471 | { | |
1472 | printf_filtered (" <disabled>\n"); | |
1473 | return; | |
1474 | } | |
1475 | ||
1476 | for (pass = 0; pass < 2; ++pass) | |
1477 | { | |
1478 | const struct block_symbol_cache *bsc | |
1479 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1480 | unsigned int i; | |
1481 | ||
1482 | if (pass == 0) | |
1483 | printf_filtered ("Global symbols:\n"); | |
1484 | else | |
1485 | printf_filtered ("Static symbols:\n"); | |
1486 | ||
1487 | for (i = 0; i < bsc->size; ++i) | |
1488 | { | |
1489 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1490 | ||
1491 | QUIT; | |
1492 | ||
1493 | switch (slot->state) | |
1494 | { | |
1495 | case SYMBOL_SLOT_UNUSED: | |
1496 | break; | |
1497 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1498 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1499 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1500 | slot->value.not_found.name, |
1501 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1502 | break; |
1503 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1504 | { |
1505 | struct symbol *found = slot->value.found.symbol; | |
1506 | const struct objfile *context = slot->objfile_context; | |
1507 | ||
1508 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1509 | host_address_to_string (context), | |
1510 | SYMBOL_PRINT_NAME (found), | |
1511 | domain_name (SYMBOL_DOMAIN (found))); | |
1512 | break; | |
1513 | } | |
f57d2163 DE |
1514 | } |
1515 | } | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | /* The "mt print symbol-cache" command. */ | |
1520 | ||
1521 | static void | |
510e5e56 | 1522 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1523 | { |
1524 | struct program_space *pspace; | |
1525 | ||
1526 | ALL_PSPACES (pspace) | |
1527 | { | |
1528 | struct symbol_cache *cache; | |
1529 | ||
1530 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1531 | pspace->num, | |
1532 | pspace->symfile_object_file != NULL | |
1533 | ? objfile_name (pspace->symfile_object_file) | |
1534 | : "(no object file)"); | |
1535 | ||
1536 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1537 | cache = symbol_cache_key.get (pspace); |
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. */ | |
3017b94d | 1608 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1609 | if (cache == NULL) |
1610 | printf_filtered (" empty, no stats available\n"); | |
1611 | else | |
1612 | symbol_cache_stats (cache); | |
1613 | } | |
1614 | } | |
1615 | ||
1616 | /* This module's 'new_objfile' observer. */ | |
1617 | ||
1618 | static void | |
1619 | symtab_new_objfile_observer (struct objfile *objfile) | |
1620 | { | |
1621 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1622 | symbol_cache_flush (current_program_space); | |
1623 | } | |
1624 | ||
1625 | /* This module's 'free_objfile' observer. */ | |
1626 | ||
1627 | static void | |
1628 | symtab_free_objfile_observer (struct objfile *objfile) | |
1629 | { | |
1630 | symbol_cache_flush (objfile->pspace); | |
1631 | } | |
1632 | \f | |
c906108c SS |
1633 | /* Debug symbols usually don't have section information. We need to dig that |
1634 | out of the minimal symbols and stash that in the debug symbol. */ | |
1635 | ||
ccefe4c4 | 1636 | void |
907fc202 UW |
1637 | fixup_section (struct general_symbol_info *ginfo, |
1638 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1639 | { |
1640 | struct minimal_symbol *msym; | |
c906108c | 1641 | |
bccdca4a UW |
1642 | /* First, check whether a minimal symbol with the same name exists |
1643 | and points to the same address. The address check is required | |
1644 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1645 | point to the function descriptor, while the debug symbol will | |
1646 | point to the actual function code. */ | |
907fc202 UW |
1647 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1648 | if (msym) | |
efd66ac6 | 1649 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1650 | else |
19e2d14b KB |
1651 | { |
1652 | /* Static, function-local variables do appear in the linker | |
1653 | (minimal) symbols, but are frequently given names that won't | |
1654 | be found via lookup_minimal_symbol(). E.g., it has been | |
1655 | observed in frv-uclinux (ELF) executables that a static, | |
1656 | function-local variable named "foo" might appear in the | |
1657 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1658 | point in attempting to extend the lookup-by-name mechanism to | |
1659 | handle this case due to the fact that there can be multiple | |
1660 | names. | |
9af17804 | 1661 | |
19e2d14b KB |
1662 | So, instead, search the section table when lookup by name has |
1663 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1664 | been relocated. If so, the relocation offset (i.e. the | |
1665 | ANOFFSET value) needs to be subtracted from these values when | |
1666 | performing the comparison. We unconditionally subtract it, | |
1667 | because, when no relocation has been performed, the ANOFFSET | |
1668 | value will simply be zero. | |
9af17804 | 1669 | |
19e2d14b KB |
1670 | The address of the symbol whose section we're fixing up HAS |
1671 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1672 | the section isn't yet known and knowing the section is | |
1673 | necessary in order to add the correct relocation value. In | |
1674 | other words, we wouldn't even be in this function (attempting | |
1675 | to compute the section) if it were already known. | |
1676 | ||
1677 | Note that it is possible to search the minimal symbols | |
1678 | (subtracting the relocation value if necessary) to find the | |
1679 | matching minimal symbol, but this is overkill and much less | |
1680 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1681 | symbol, only its section. |
1682 | ||
19e2d14b KB |
1683 | Note that this technique (of doing a section table search) |
1684 | can fail when unrelocated section addresses overlap. For | |
1685 | this reason, we still attempt a lookup by name prior to doing | |
1686 | a search of the section table. */ | |
9af17804 | 1687 | |
19e2d14b | 1688 | struct obj_section *s; |
e27d198c | 1689 | int fallback = -1; |
433759f7 | 1690 | |
19e2d14b KB |
1691 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1692 | { | |
65cf3563 | 1693 | int idx = s - objfile->sections; |
19e2d14b KB |
1694 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1695 | ||
e27d198c TT |
1696 | if (fallback == -1) |
1697 | fallback = idx; | |
1698 | ||
f1f6aadf PA |
1699 | if (obj_section_addr (s) - offset <= addr |
1700 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1701 | { |
19e2d14b KB |
1702 | ginfo->section = idx; |
1703 | return; | |
1704 | } | |
1705 | } | |
e27d198c TT |
1706 | |
1707 | /* If we didn't find the section, assume it is in the first | |
1708 | section. If there is no allocated section, then it hardly | |
1709 | matters what we pick, so just pick zero. */ | |
1710 | if (fallback == -1) | |
1711 | ginfo->section = 0; | |
1712 | else | |
1713 | ginfo->section = fallback; | |
19e2d14b | 1714 | } |
c906108c SS |
1715 | } |
1716 | ||
1717 | struct symbol * | |
fba45db2 | 1718 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1719 | { |
907fc202 UW |
1720 | CORE_ADDR addr; |
1721 | ||
c906108c SS |
1722 | if (!sym) |
1723 | return NULL; | |
1724 | ||
1994afbf DE |
1725 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1726 | return sym; | |
1727 | ||
907fc202 UW |
1728 | /* We either have an OBJFILE, or we can get at it from the sym's |
1729 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1730 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1731 | |
1732 | if (objfile == NULL) | |
08be3fe3 | 1733 | objfile = symbol_objfile (sym); |
907fc202 | 1734 | |
e27d198c TT |
1735 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1736 | return sym; | |
1737 | ||
907fc202 UW |
1738 | /* We should have an objfile by now. */ |
1739 | gdb_assert (objfile); | |
1740 | ||
1741 | switch (SYMBOL_CLASS (sym)) | |
1742 | { | |
1743 | case LOC_STATIC: | |
1744 | case LOC_LABEL: | |
907fc202 UW |
1745 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1746 | break; | |
1747 | case LOC_BLOCK: | |
2b1ffcfd | 1748 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1749 | break; |
1750 | ||
1751 | default: | |
1752 | /* Nothing else will be listed in the minsyms -- no use looking | |
1753 | it up. */ | |
1754 | return sym; | |
1755 | } | |
1756 | ||
1757 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1758 | |
1759 | return sym; | |
1760 | } | |
1761 | ||
b5ec771e PA |
1762 | /* See symtab.h. */ |
1763 | ||
1764 | demangle_for_lookup_info::demangle_for_lookup_info | |
1765 | (const lookup_name_info &lookup_name, language lang) | |
1766 | { | |
1767 | demangle_result_storage storage; | |
1768 | ||
c62446b1 PA |
1769 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1770 | { | |
1771 | gdb::unique_xmalloc_ptr<char> without_params | |
1772 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1773 | lookup_name.completion_mode ()); | |
1774 | ||
1775 | if (without_params != NULL) | |
1776 | { | |
de63c46b PA |
1777 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1778 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1779 | lang, storage); | |
c62446b1 PA |
1780 | return; |
1781 | } | |
1782 | } | |
1783 | ||
de63c46b PA |
1784 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1785 | m_demangled_name = lookup_name.name (); | |
1786 | else | |
1787 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1788 | lang, storage); | |
b5ec771e PA |
1789 | } |
1790 | ||
1791 | /* See symtab.h. */ | |
1792 | ||
1793 | const lookup_name_info & | |
1794 | lookup_name_info::match_any () | |
1795 | { | |
1796 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1797 | symbol names. */ | |
1798 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1799 | true); | |
1800 | ||
1801 | return lookup_name; | |
1802 | } | |
1803 | ||
f8eba3c6 | 1804 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1805 | lookup functions. The result can either be the input NAME |
1806 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1807 | |
2f408ecb | 1808 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1809 | Normally, Ada symbol lookups are performed using the encoded name |
1810 | rather than the demangled name, and so it might seem to make sense | |
1811 | for this function to return an encoded version of NAME. | |
1812 | Unfortunately, we cannot do this, because this function is used in | |
1813 | circumstances where it is not appropriate to try to encode NAME. | |
1814 | For instance, when displaying the frame info, we demangle the name | |
1815 | of each parameter, and then perform a symbol lookup inside our | |
1816 | function using that demangled name. In Ada, certain functions | |
1817 | have internally-generated parameters whose name contain uppercase | |
1818 | characters. Encoding those name would result in those uppercase | |
1819 | characters to become lowercase, and thus cause the symbol lookup | |
1820 | to fail. */ | |
c906108c | 1821 | |
2f408ecb | 1822 | const char * |
f8eba3c6 | 1823 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1824 | demangle_result_storage &storage) |
c906108c | 1825 | { |
9c37b5ae | 1826 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1827 | lookup, so we can always binary search. */ |
53c5240f | 1828 | if (lang == language_cplus) |
729051e6 | 1829 | { |
2f408ecb PA |
1830 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1831 | if (demangled_name != NULL) | |
1832 | return storage.set_malloc_ptr (demangled_name); | |
1833 | ||
1834 | /* If we were given a non-mangled name, canonicalize it | |
1835 | according to the language (so far only for C++). */ | |
1836 | std::string canon = cp_canonicalize_string (name); | |
1837 | if (!canon.empty ()) | |
1838 | return storage.swap_string (canon); | |
729051e6 | 1839 | } |
6aecb9c2 JB |
1840 | else if (lang == language_d) |
1841 | { | |
2f408ecb PA |
1842 | char *demangled_name = d_demangle (name, 0); |
1843 | if (demangled_name != NULL) | |
1844 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1845 | } |
a766d390 DE |
1846 | else if (lang == language_go) |
1847 | { | |
2f408ecb PA |
1848 | char *demangled_name = go_demangle (name, 0); |
1849 | if (demangled_name != NULL) | |
1850 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1851 | } |
729051e6 | 1852 | |
2f408ecb | 1853 | return name; |
f8eba3c6 TT |
1854 | } |
1855 | ||
5ffa0793 PA |
1856 | /* See symtab.h. */ |
1857 | ||
1858 | unsigned int | |
1859 | search_name_hash (enum language language, const char *search_name) | |
1860 | { | |
1861 | return language_def (language)->la_search_name_hash (search_name); | |
1862 | } | |
1863 | ||
cf901d3b | 1864 | /* See symtab.h. |
f8eba3c6 | 1865 | |
cf901d3b | 1866 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1867 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1868 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1869 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1870 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1871 | that there is C++ code below which can error(), but that probably |
1872 | doesn't affect these calls since they are looking for a known | |
1873 | variable and thus can probably assume it will never hit the C++ | |
1874 | code). */ | |
1875 | ||
d12307c1 | 1876 | struct block_symbol |
f8eba3c6 TT |
1877 | lookup_symbol_in_language (const char *name, const struct block *block, |
1878 | const domain_enum domain, enum language lang, | |
1993b719 | 1879 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1880 | { |
2f408ecb PA |
1881 | demangle_result_storage storage; |
1882 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1883 | |
de63c46b PA |
1884 | return lookup_symbol_aux (modified_name, |
1885 | symbol_name_match_type::FULL, | |
1886 | block, domain, lang, | |
2f408ecb | 1887 | is_a_field_of_this); |
fba7f19c EZ |
1888 | } |
1889 | ||
cf901d3b | 1890 | /* See symtab.h. */ |
53c5240f | 1891 | |
d12307c1 | 1892 | struct block_symbol |
53c5240f | 1893 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1894 | domain_enum domain, |
1895 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1896 | { |
1897 | return lookup_symbol_in_language (name, block, domain, | |
1898 | current_language->la_language, | |
2570f2b7 | 1899 | is_a_field_of_this); |
53c5240f PA |
1900 | } |
1901 | ||
cf901d3b | 1902 | /* See symtab.h. */ |
66a17cb6 | 1903 | |
de63c46b PA |
1904 | struct block_symbol |
1905 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1906 | domain_enum domain) | |
1907 | { | |
1908 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1909 | block, domain, language_asm, NULL); | |
1910 | } | |
1911 | ||
1912 | /* See symtab.h. */ | |
1913 | ||
d12307c1 | 1914 | struct block_symbol |
66a17cb6 TT |
1915 | lookup_language_this (const struct language_defn *lang, |
1916 | const struct block *block) | |
1917 | { | |
1918 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1919 | return {}; |
66a17cb6 | 1920 | |
cc485e62 DE |
1921 | if (symbol_lookup_debug > 1) |
1922 | { | |
1923 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1924 | ||
1925 | fprintf_unfiltered (gdb_stdlog, | |
1926 | "lookup_language_this (%s, %s (objfile %s))", | |
1927 | lang->la_name, host_address_to_string (block), | |
1928 | objfile_debug_name (objfile)); | |
1929 | } | |
1930 | ||
03de6823 | 1931 | while (block) |
66a17cb6 TT |
1932 | { |
1933 | struct symbol *sym; | |
1934 | ||
de63c46b PA |
1935 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1936 | symbol_name_match_type::SEARCH_NAME, | |
1937 | VAR_DOMAIN); | |
66a17cb6 | 1938 | if (sym != NULL) |
f149aabd | 1939 | { |
cc485e62 DE |
1940 | if (symbol_lookup_debug > 1) |
1941 | { | |
1942 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1943 | SYMBOL_PRINT_NAME (sym), | |
1944 | host_address_to_string (sym), | |
1945 | host_address_to_string (block)); | |
1946 | } | |
d12307c1 | 1947 | return (struct block_symbol) {sym, block}; |
f149aabd | 1948 | } |
66a17cb6 | 1949 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1950 | break; |
66a17cb6 TT |
1951 | block = BLOCK_SUPERBLOCK (block); |
1952 | } | |
03de6823 | 1953 | |
cc485e62 DE |
1954 | if (symbol_lookup_debug > 1) |
1955 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1956 | return {}; |
66a17cb6 TT |
1957 | } |
1958 | ||
2dc3df72 TT |
1959 | /* Given TYPE, a structure/union, |
1960 | return 1 if the component named NAME from the ultimate target | |
1961 | structure/union is defined, otherwise, return 0. */ | |
1962 | ||
1963 | static int | |
1993b719 TT |
1964 | check_field (struct type *type, const char *name, |
1965 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1966 | { |
1967 | int i; | |
1968 | ||
1969 | /* The type may be a stub. */ | |
f168693b | 1970 | type = check_typedef (type); |
2dc3df72 TT |
1971 | |
1972 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1973 | { | |
1974 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1975 | ||
1976 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1977 | { |
1978 | is_a_field_of_this->type = type; | |
1979 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1980 | return 1; | |
1981 | } | |
2dc3df72 TT |
1982 | } |
1983 | ||
1984 | /* C++: If it was not found as a data field, then try to return it | |
1985 | as a pointer to a method. */ | |
1986 | ||
1987 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1988 | { | |
1989 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1990 | { |
1991 | is_a_field_of_this->type = type; | |
1992 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1993 | return 1; | |
1994 | } | |
2dc3df72 TT |
1995 | } |
1996 | ||
1997 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1998 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1999 | return 1; |
2000 | ||
2001 | return 0; | |
2002 | } | |
2003 | ||
53c5240f | 2004 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2005 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2006 | |
d12307c1 | 2007 | static struct block_symbol |
de63c46b PA |
2008 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2009 | const struct block *block, | |
94af9270 | 2010 | const domain_enum domain, enum language language, |
1993b719 | 2011 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2012 | { |
d12307c1 | 2013 | struct block_symbol result; |
53c5240f | 2014 | const struct language_defn *langdef; |
406bc4de | 2015 | |
cc485e62 DE |
2016 | if (symbol_lookup_debug) |
2017 | { | |
2018 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2019 | ||
2020 | fprintf_unfiltered (gdb_stdlog, | |
2021 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2022 | name, host_address_to_string (block), | |
2023 | objfile != NULL | |
2024 | ? objfile_debug_name (objfile) : "NULL", | |
2025 | domain_name (domain), language_str (language)); | |
2026 | } | |
2027 | ||
9a146a11 EZ |
2028 | /* Make sure we do something sensible with is_a_field_of_this, since |
2029 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2030 | certainly use it later. If we don't set it, the contents of |
2031 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2032 | if (is_a_field_of_this != NULL) |
1993b719 | 2033 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2034 | |
e4051eeb DC |
2035 | /* Search specified block and its superiors. Don't search |
2036 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2037 | |
de63c46b | 2038 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2039 | if (result.symbol != NULL) |
cc485e62 DE |
2040 | { |
2041 | if (symbol_lookup_debug) | |
2042 | { | |
2043 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2044 | host_address_to_string (result.symbol)); |
cc485e62 | 2045 | } |
d12307c1 | 2046 | return result; |
cc485e62 | 2047 | } |
c906108c | 2048 | |
53c5240f | 2049 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2050 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2051 | |
2052 | langdef = language_def (language); | |
5f9a71c3 | 2053 | |
6592e36f TT |
2054 | /* Don't do this check if we are searching for a struct. It will |
2055 | not be found by check_field, but will be found by other | |
2056 | means. */ | |
2057 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2058 | { |
d12307c1 | 2059 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2060 | |
d12307c1 | 2061 | if (result.symbol) |
c906108c | 2062 | { |
d12307c1 | 2063 | struct type *t = result.symbol->type; |
9af17804 | 2064 | |
2b2d9e11 VP |
2065 | /* I'm not really sure that type of this can ever |
2066 | be typedefed; just be safe. */ | |
f168693b | 2067 | t = check_typedef (t); |
aa006118 | 2068 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2069 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2070 | |
2b2d9e11 VP |
2071 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2072 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2073 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2074 | langdef->la_name_of_this); |
9af17804 | 2075 | |
1993b719 | 2076 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2077 | { |
2078 | if (symbol_lookup_debug) | |
2079 | { | |
2080 | fprintf_unfiltered (gdb_stdlog, | |
2081 | "lookup_symbol_aux (...) = NULL\n"); | |
2082 | } | |
6640a367 | 2083 | return {}; |
cc485e62 | 2084 | } |
c906108c SS |
2085 | } |
2086 | } | |
2087 | ||
53c5240f | 2088 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2089 | up static and global variables. */ |
c906108c | 2090 | |
d12307c1 PMR |
2091 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2092 | if (result.symbol != NULL) | |
cc485e62 DE |
2093 | { |
2094 | if (symbol_lookup_debug) | |
2095 | { | |
2096 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2097 | host_address_to_string (result.symbol)); |
cc485e62 | 2098 | } |
d12307c1 | 2099 | return result; |
cc485e62 | 2100 | } |
c906108c | 2101 | |
774b6a14 TT |
2102 | /* Now search all static file-level symbols. Not strictly correct, |
2103 | but more useful than an error. */ | |
41f62f39 | 2104 | |
d12307c1 | 2105 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2106 | if (symbol_lookup_debug) |
2107 | { | |
2108 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2109 | result.symbol != NULL |
2110 | ? host_address_to_string (result.symbol) | |
2111 | : "NULL"); | |
cc485e62 | 2112 | } |
d12307c1 | 2113 | return result; |
41f62f39 JK |
2114 | } |
2115 | ||
e4051eeb | 2116 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2117 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2118 | |
d12307c1 | 2119 | static struct block_symbol |
de63c46b PA |
2120 | lookup_local_symbol (const char *name, |
2121 | symbol_name_match_type match_type, | |
2122 | const struct block *block, | |
74016e12 DE |
2123 | const domain_enum domain, |
2124 | enum language language) | |
8155455b DC |
2125 | { |
2126 | struct symbol *sym; | |
89a9d1b1 | 2127 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2128 | const char *scope = block_scope (block); |
2129 | ||
e4051eeb DC |
2130 | /* Check if either no block is specified or it's a global block. */ |
2131 | ||
89a9d1b1 | 2132 | if (static_block == NULL) |
6640a367 | 2133 | return {}; |
e4051eeb | 2134 | |
89a9d1b1 | 2135 | while (block != static_block) |
f61e8913 | 2136 | { |
de63c46b | 2137 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2138 | if (sym != NULL) |
d12307c1 | 2139 | return (struct block_symbol) {sym, block}; |
edb3359d | 2140 | |
f55ee35c | 2141 | if (language == language_cplus || language == language_fortran) |
13387711 | 2142 | { |
b926417a | 2143 | struct block_symbol blocksym |
d12307c1 PMR |
2144 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2145 | domain); | |
2146 | ||
b926417a TT |
2147 | if (blocksym.symbol != NULL) |
2148 | return blocksym; | |
13387711 SW |
2149 | } |
2150 | ||
edb3359d DJ |
2151 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2152 | break; | |
f61e8913 DC |
2153 | block = BLOCK_SUPERBLOCK (block); |
2154 | } | |
2155 | ||
3aee438b | 2156 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2157 | |
6640a367 | 2158 | return {}; |
f61e8913 DC |
2159 | } |
2160 | ||
cf901d3b | 2161 | /* See symtab.h. */ |
3a40aaa0 | 2162 | |
c0201579 | 2163 | struct objfile * |
3a40aaa0 UW |
2164 | lookup_objfile_from_block (const struct block *block) |
2165 | { | |
3a40aaa0 UW |
2166 | if (block == NULL) |
2167 | return NULL; | |
2168 | ||
2169 | block = block_global_block (block); | |
43f3e411 | 2170 | /* Look through all blockvectors. */ |
2030c079 | 2171 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2172 | { |
b669c953 | 2173 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2174 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2175 | GLOBAL_BLOCK)) | |
2176 | { | |
2177 | if (obj->separate_debug_objfile_backlink) | |
2178 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2179 | |
d8aeb77f TT |
2180 | return obj; |
2181 | } | |
2182 | } | |
3a40aaa0 UW |
2183 | |
2184 | return NULL; | |
2185 | } | |
2186 | ||
cf901d3b | 2187 | /* See symtab.h. */ |
f61e8913 | 2188 | |
5f9a71c3 | 2189 | struct symbol * |
de63c46b PA |
2190 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2191 | const struct block *block, | |
d1a2d36d | 2192 | const domain_enum domain) |
f61e8913 DC |
2193 | { |
2194 | struct symbol *sym; | |
f61e8913 | 2195 | |
cc485e62 DE |
2196 | if (symbol_lookup_debug > 1) |
2197 | { | |
2198 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2199 | ||
2200 | fprintf_unfiltered (gdb_stdlog, | |
2201 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2202 | name, host_address_to_string (block), | |
2203 | objfile_debug_name (objfile), | |
2204 | domain_name (domain)); | |
2205 | } | |
2206 | ||
de63c46b | 2207 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2208 | if (sym) |
8155455b | 2209 | { |
cc485e62 DE |
2210 | if (symbol_lookup_debug > 1) |
2211 | { | |
2212 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2213 | host_address_to_string (sym)); | |
2214 | } | |
21b556f4 | 2215 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2216 | } |
2217 | ||
cc485e62 DE |
2218 | if (symbol_lookup_debug > 1) |
2219 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2220 | return NULL; |
2221 | } | |
2222 | ||
cf901d3b | 2223 | /* See symtab.h. */ |
3a40aaa0 | 2224 | |
d12307c1 | 2225 | struct block_symbol |
efad9b6a | 2226 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2227 | enum block_enum block_index, |
3a40aaa0 | 2228 | const char *name, |
21b556f4 | 2229 | const domain_enum domain) |
3a40aaa0 | 2230 | { |
442853af CB |
2231 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2232 | ||
bde09ab7 | 2233 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2234 | { |
d12307c1 | 2235 | struct block_symbol result |
442853af | 2236 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2237 | |
442853af | 2238 | if (result.symbol != nullptr) |
d12307c1 | 2239 | return result; |
15d123c9 | 2240 | } |
56e3f43c | 2241 | |
6640a367 | 2242 | return {}; |
3a40aaa0 UW |
2243 | } |
2244 | ||
19630284 JB |
2245 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2246 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2247 | depending on whether or not we want to search global symbols or |
2248 | static symbols. */ | |
2249 | ||
d12307c1 | 2250 | static struct block_symbol |
c32e6a04 CB |
2251 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2252 | enum block_enum block_index, const char *name, | |
2253 | const domain_enum domain) | |
19630284 | 2254 | { |
ba715d7f JK |
2255 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2256 | ||
cc485e62 DE |
2257 | if (symbol_lookup_debug > 1) |
2258 | { | |
2259 | fprintf_unfiltered (gdb_stdlog, | |
2260 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2261 | objfile_debug_name (objfile), | |
2262 | block_index == GLOBAL_BLOCK | |
2263 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2264 | name, domain_name (domain)); | |
2265 | } | |
2266 | ||
b669c953 | 2267 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2268 | { |
43f3e411 DE |
2269 | const struct blockvector *bv; |
2270 | const struct block *block; | |
d12307c1 | 2271 | struct block_symbol result; |
43f3e411 DE |
2272 | |
2273 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2274 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2275 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2276 | result.block = block; | |
2277 | if (result.symbol != NULL) | |
a743abeb | 2278 | { |
cc485e62 DE |
2279 | if (symbol_lookup_debug > 1) |
2280 | { | |
2281 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2282 | host_address_to_string (result.symbol), |
cc485e62 DE |
2283 | host_address_to_string (block)); |
2284 | } | |
d12307c1 PMR |
2285 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2286 | return result; | |
2287 | ||
a743abeb DE |
2288 | } |
2289 | } | |
19630284 | 2290 | |
cc485e62 DE |
2291 | if (symbol_lookup_debug > 1) |
2292 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2293 | return {}; |
19630284 JB |
2294 | } |
2295 | ||
74016e12 | 2296 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2297 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2298 | and all associated separate debug objfiles. |
2299 | ||
2300 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2301 | because the outer loop will cause them to be searched too. This case is | |
2302 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2303 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2304 | |
d12307c1 | 2305 | static struct block_symbol |
422d65e7 DE |
2306 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2307 | const char *linkage_name, | |
2308 | domain_enum domain) | |
2309 | { | |
2310 | enum language lang = current_language->la_language; | |
e9ad22ee | 2311 | struct objfile *main_objfile; |
422d65e7 | 2312 | |
2f408ecb PA |
2313 | demangle_result_storage storage; |
2314 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2315 | ||
422d65e7 DE |
2316 | if (objfile->separate_debug_objfile_backlink) |
2317 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2318 | else | |
2319 | main_objfile = objfile; | |
2320 | ||
bde09ab7 | 2321 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2322 | { |
d12307c1 PMR |
2323 | struct block_symbol result; |
2324 | ||
2325 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2326 | modified_name, domain); | |
2327 | if (result.symbol == NULL) | |
2328 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2329 | modified_name, domain); | |
2330 | if (result.symbol != NULL) | |
2f408ecb | 2331 | return result; |
422d65e7 DE |
2332 | } |
2333 | ||
6640a367 | 2334 | return {}; |
422d65e7 DE |
2335 | } |
2336 | ||
08c23b0d TT |
2337 | /* A helper function that throws an exception when a symbol was found |
2338 | in a psymtab but not in a symtab. */ | |
2339 | ||
2340 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2341 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2342 | struct compunit_symtab *cust) |
08c23b0d TT |
2343 | { |
2344 | error (_("\ | |
2345 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2346 | %s may be an inlined function, or may be a template function\n \ | |
2347 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2348 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2349 | name, |
2350 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2351 | name, name); | |
08c23b0d TT |
2352 | } |
2353 | ||
74016e12 DE |
2354 | /* A helper function for various lookup routines that interfaces with |
2355 | the "quick" symbol table functions. */ | |
8155455b | 2356 | |
d12307c1 | 2357 | static struct block_symbol |
ddbcedf5 CB |
2358 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2359 | enum block_enum block_index, const char *name, | |
2360 | const domain_enum domain) | |
8155455b | 2361 | { |
43f3e411 | 2362 | struct compunit_symtab *cust; |
346d1dfe | 2363 | const struct blockvector *bv; |
8155455b | 2364 | const struct block *block; |
d12307c1 | 2365 | struct block_symbol result; |
8155455b | 2366 | |
ccefe4c4 | 2367 | if (!objfile->sf) |
6640a367 | 2368 | return {}; |
cc485e62 DE |
2369 | |
2370 | if (symbol_lookup_debug > 1) | |
2371 | { | |
2372 | fprintf_unfiltered (gdb_stdlog, | |
2373 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2374 | objfile_debug_name (objfile), | |
2375 | block_index == GLOBAL_BLOCK | |
2376 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2377 | name, domain_name (domain)); | |
2378 | } | |
2379 | ||
43f3e411 DE |
2380 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2381 | if (cust == NULL) | |
cc485e62 DE |
2382 | { |
2383 | if (symbol_lookup_debug > 1) | |
2384 | { | |
2385 | fprintf_unfiltered (gdb_stdlog, | |
2386 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2387 | } | |
6640a367 | 2388 | return {}; |
cc485e62 | 2389 | } |
8155455b | 2390 | |
43f3e411 | 2391 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2392 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2393 | result.symbol = block_lookup_symbol (block, name, |
2394 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2395 | if (result.symbol == NULL) |
43f3e411 | 2396 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2397 | |
2398 | if (symbol_lookup_debug > 1) | |
2399 | { | |
2400 | fprintf_unfiltered (gdb_stdlog, | |
2401 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2402 | host_address_to_string (result.symbol), |
cc485e62 DE |
2403 | host_address_to_string (block)); |
2404 | } | |
2405 | ||
d12307c1 PMR |
2406 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2407 | result.block = block; | |
2408 | return result; | |
8155455b DC |
2409 | } |
2410 | ||
cf901d3b | 2411 | /* See symtab.h. */ |
5f9a71c3 | 2412 | |
d12307c1 | 2413 | struct block_symbol |
f606139a DE |
2414 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2415 | const char *name, | |
5f9a71c3 | 2416 | const struct block *block, |
21b556f4 | 2417 | const domain_enum domain) |
5f9a71c3 | 2418 | { |
d12307c1 | 2419 | struct block_symbol result; |
5f9a71c3 DC |
2420 | |
2421 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2422 | this (or what turned into this) was part of lookup_symbol_aux; | |
2423 | I'm much less worried about these questions now, since these | |
2424 | decisions have turned out well, but I leave these comments here | |
2425 | for posterity. */ | |
2426 | ||
2427 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2428 | not it would be appropriate to search the current global block | |
2429 | here as well. (That's what this code used to do before the | |
2430 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2431 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2432 | next. On the other hand, if decode_line_1 is passed an argument |
2433 | like filename:var, then the user presumably wants 'var' to be | |
2434 | searched for in filename. On the third hand, there shouldn't be | |
2435 | multiple global variables all of which are named 'var', and it's | |
2436 | not like decode_line_1 has ever restricted its search to only | |
2437 | global variables in a single filename. All in all, only | |
2438 | searching the static block here seems best: it's correct and it's | |
2439 | cleanest. */ | |
2440 | ||
2441 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2442 | issue here: if you usually search for global symbols in the | |
2443 | current file, then it would be slightly better to search the | |
2444 | current global block before searching all the symtabs. But there | |
2445 | are other factors that have a much greater effect on performance | |
2446 | than that one, so I don't think we should worry about that for | |
2447 | now. */ | |
2448 | ||
d9060ba6 DE |
2449 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2450 | the current objfile. Searching the current objfile first is useful | |
2451 | for both matching user expectations as well as performance. */ | |
2452 | ||
d12307c1 PMR |
2453 | result = lookup_symbol_in_static_block (name, block, domain); |
2454 | if (result.symbol != NULL) | |
2455 | return result; | |
5f9a71c3 | 2456 | |
1994afbf DE |
2457 | /* If we didn't find a definition for a builtin type in the static block, |
2458 | search for it now. This is actually the right thing to do and can be | |
2459 | a massive performance win. E.g., when debugging a program with lots of | |
2460 | shared libraries we could search all of them only to find out the | |
2461 | builtin type isn't defined in any of them. This is common for types | |
2462 | like "void". */ | |
2463 | if (domain == VAR_DOMAIN) | |
2464 | { | |
2465 | struct gdbarch *gdbarch; | |
2466 | ||
2467 | if (block == NULL) | |
2468 | gdbarch = target_gdbarch (); | |
2469 | else | |
2470 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2471 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2472 | gdbarch, name); | |
2473 | result.block = NULL; | |
2474 | if (result.symbol != NULL) | |
2475 | return result; | |
1994afbf DE |
2476 | } |
2477 | ||
08724ab7 | 2478 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2479 | } |
2480 | ||
cf901d3b | 2481 | /* See symtab.h. */ |
5f9a71c3 | 2482 | |
d12307c1 | 2483 | struct block_symbol |
24d864bb DE |
2484 | lookup_symbol_in_static_block (const char *name, |
2485 | const struct block *block, | |
2486 | const domain_enum domain) | |
5f9a71c3 DC |
2487 | { |
2488 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2489 | struct symbol *sym; |
5f9a71c3 | 2490 | |
cc485e62 | 2491 | if (static_block == NULL) |
6640a367 | 2492 | return {}; |
cc485e62 DE |
2493 | |
2494 | if (symbol_lookup_debug) | |
2495 | { | |
2496 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2497 | ||
2498 | fprintf_unfiltered (gdb_stdlog, | |
2499 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2500 | " %s)\n", | |
2501 | name, | |
2502 | host_address_to_string (block), | |
2503 | objfile_debug_name (objfile), | |
2504 | domain_name (domain)); | |
2505 | } | |
2506 | ||
de63c46b PA |
2507 | sym = lookup_symbol_in_block (name, |
2508 | symbol_name_match_type::FULL, | |
2509 | static_block, domain); | |
cc485e62 DE |
2510 | if (symbol_lookup_debug) |
2511 | { | |
2512 | fprintf_unfiltered (gdb_stdlog, | |
2513 | "lookup_symbol_in_static_block (...) = %s\n", | |
2514 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2515 | } | |
d12307c1 | 2516 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2517 | } |
2518 | ||
af3768e9 DE |
2519 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2520 | 1) First search expanded symtabs, and if not found | |
2521 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2522 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2523 | ||
d12307c1 | 2524 | static struct block_symbol |
c32e6a04 | 2525 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2526 | const char *name, const domain_enum domain) |
2527 | { | |
d12307c1 | 2528 | struct block_symbol result; |
af3768e9 | 2529 | |
c32e6a04 CB |
2530 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
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 | 2586 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2587 | return {}; |
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); | |
6640a367 | 2605 | return {}; |
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 | 2668 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2669 | return {}; |
d12307c1 | 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 * |
ddbcedf5 CB |
2729 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2730 | enum block_enum block_index, | |
ccefe4c4 TT |
2731 | const char *name) |
2732 | { | |
43f3e411 | 2733 | struct compunit_symtab *cust; |
346d1dfe | 2734 | const struct blockvector *bv; |
582942f4 | 2735 | const struct block *block; |
ccefe4c4 | 2736 | struct symbol *sym; |
c906108c | 2737 | |
ccefe4c4 TT |
2738 | if (!objfile->sf) |
2739 | return NULL; | |
43f3e411 DE |
2740 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2741 | STRUCT_DOMAIN); | |
2742 | if (cust == NULL) | |
ccefe4c4 | 2743 | return NULL; |
c906108c | 2744 | |
43f3e411 | 2745 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2746 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2747 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2748 | block_find_non_opaque_type, NULL); | |
2749 | if (sym == NULL) | |
43f3e411 | 2750 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2751 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2752 | return SYMBOL_TYPE (sym); | |
2753 | } | |
08c23b0d | 2754 | |
b2e2f908 DE |
2755 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2756 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2757 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2758 | ||
2759 | static struct type * | |
ddbcedf5 CB |
2760 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2761 | enum block_enum block_index, | |
b2e2f908 DE |
2762 | const char *name) |
2763 | { | |
b2e2f908 DE |
2764 | const struct blockvector *bv; |
2765 | const struct block *block; | |
2766 | const struct symbol *sym; | |
2767 | ||
b669c953 | 2768 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2769 | { |
2770 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2771 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2772 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2773 | block_find_non_opaque_type, NULL); | |
2774 | if (sym != NULL) | |
2775 | { | |
2776 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2777 | return SYMBOL_TYPE (sym); | |
2778 | } | |
2779 | } | |
c906108c | 2780 | |
ccefe4c4 | 2781 | return NULL; |
b368761e | 2782 | } |
c906108c | 2783 | |
b368761e DC |
2784 | /* The standard implementation of lookup_transparent_type. This code |
2785 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2786 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2787 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2788 | global blocks. */ |
c906108c SS |
2789 | |
2790 | struct type * | |
b368761e | 2791 | basic_lookup_transparent_type (const char *name) |
c906108c | 2792 | { |
ccefe4c4 | 2793 | struct type *t; |
c906108c SS |
2794 | |
2795 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2796 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2797 | of the desired name as a global, then do psymtab-to-symtab |
2798 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2799 | |
2030c079 | 2800 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2801 | { |
2802 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2803 | if (t) | |
2804 | return t; | |
2805 | } | |
c906108c | 2806 | |
2030c079 | 2807 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2808 | { |
2809 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2810 | if (t) | |
2811 | return t; | |
2812 | } | |
c906108c SS |
2813 | |
2814 | /* Now search the static file-level symbols. | |
2815 | Not strictly correct, but more useful than an error. | |
2816 | Do the symtab's first, then | |
c378eb4e | 2817 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2818 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2819 | conversion on the fly and return the found symbol. */ |
c906108c | 2820 | |
2030c079 | 2821 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2822 | { |
2823 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2824 | if (t) | |
2825 | return t; | |
2826 | } | |
c906108c | 2827 | |
2030c079 | 2828 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2829 | { |
2830 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2831 | if (t) | |
2832 | return t; | |
2833 | } | |
ccefe4c4 | 2834 | |
c906108c SS |
2835 | return (struct type *) 0; |
2836 | } | |
2837 | ||
4eeaa230 | 2838 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
14bc53a8 PA |
2839 | |
2840 | For each symbol that matches, CALLBACK is called. The symbol is | |
2841 | passed to the callback. | |
2842 | ||
2843 | If CALLBACK returns false, the iteration ends. Otherwise, the | |
4eeaa230 | 2844 | search continues. */ |
f8eba3c6 TT |
2845 | |
2846 | void | |
b5ec771e PA |
2847 | iterate_over_symbols (const struct block *block, |
2848 | const lookup_name_info &name, | |
f8eba3c6 | 2849 | const domain_enum domain, |
14bc53a8 | 2850 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2851 | { |
4eeaa230 DE |
2852 | struct block_iterator iter; |
2853 | struct symbol *sym; | |
f8eba3c6 | 2854 | |
358d6ab3 | 2855 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2856 | { |
4186eb54 KS |
2857 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2858 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2859 | { |
7e41c8db KS |
2860 | struct block_symbol block_sym = {sym, block}; |
2861 | ||
2862 | if (!callback (&block_sym)) | |
4eeaa230 | 2863 | return; |
f8eba3c6 | 2864 | } |
f8eba3c6 TT |
2865 | } |
2866 | } | |
2867 | ||
43f3e411 DE |
2868 | /* Find the compunit symtab associated with PC and SECTION. |
2869 | This will read in debug info as necessary. */ | |
c906108c | 2870 | |
43f3e411 DE |
2871 | struct compunit_symtab * |
2872 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2873 | { |
43f3e411 | 2874 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2875 | CORE_ADDR distance = 0; |
77e371c0 | 2876 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2877 | |
2878 | /* If we know that this is not a text address, return failure. This is | |
2879 | necessary because we loop based on the block's high and low code | |
2880 | addresses, which do not include the data ranges, and because | |
2881 | we call find_pc_sect_psymtab which has a similar restriction based | |
2882 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2883 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2884 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2885 | return NULL; |
c906108c SS |
2886 | |
2887 | /* Search all symtabs for the one whose file contains our address, and which | |
2888 | is the smallest of all the ones containing the address. This is designed | |
2889 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2890 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2891 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2892 | ||
2893 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2894 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2895 | been read in already via the dependency mechanism. |
2896 | It might be swifter to create several symtabs with the same name | |
2897 | like xcoff does (I'm not sure). | |
2898 | ||
2899 | It also happens for objfiles that have their functions reordered. | |
2900 | For these, the symtab we are looking for is not necessarily read in. */ | |
2901 | ||
2030c079 | 2902 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2903 | { |
b669c953 | 2904 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2905 | { |
582942f4 | 2906 | const struct block *b; |
d8aeb77f | 2907 | const struct blockvector *bv; |
43f3e411 | 2908 | |
d8aeb77f TT |
2909 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2910 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2911 | |
d8aeb77f TT |
2912 | if (BLOCK_START (b) <= pc |
2913 | && BLOCK_END (b) > pc | |
2914 | && (distance == 0 | |
2915 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2916 | { | |
2917 | /* For an objfile that has its functions reordered, | |
2918 | find_pc_psymtab will find the proper partial symbol table | |
2919 | and we simply return its corresponding symtab. */ | |
2920 | /* In order to better support objfiles that contain both | |
2921 | stabs and coff debugging info, we continue on if a psymtab | |
2922 | can't be found. */ | |
2923 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2924 | { | |
2925 | struct compunit_symtab *result; | |
2926 | ||
2927 | result | |
2928 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2929 | msymbol, | |
2930 | pc, | |
2931 | section, | |
2932 | 0); | |
2933 | if (result != NULL) | |
2934 | return result; | |
2935 | } | |
2936 | if (section != 0) | |
2937 | { | |
2938 | struct block_iterator iter; | |
2939 | struct symbol *sym = NULL; | |
c906108c | 2940 | |
d8aeb77f TT |
2941 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2942 | { | |
2943 | fixup_symbol_section (sym, obj_file); | |
2944 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2945 | sym), | |
2946 | section)) | |
2947 | break; | |
2948 | } | |
2949 | if (sym == NULL) | |
2950 | continue; /* No symbol in this symtab matches | |
2951 | section. */ | |
2952 | } | |
2953 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2954 | best_cust = cust; | |
2955 | } | |
2956 | } | |
2957 | } | |
c906108c | 2958 | |
43f3e411 DE |
2959 | if (best_cust != NULL) |
2960 | return best_cust; | |
c906108c | 2961 | |
072cabfe DE |
2962 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2963 | ||
2030c079 | 2964 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2965 | { |
2966 | struct compunit_symtab *result; | |
2967 | ||
2968 | if (!objf->sf) | |
2969 | continue; | |
2970 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2971 | msymbol, | |
2972 | pc, section, | |
2973 | 1); | |
2974 | if (result != NULL) | |
2975 | return result; | |
2976 | } | |
ccefe4c4 TT |
2977 | |
2978 | return NULL; | |
c906108c SS |
2979 | } |
2980 | ||
43f3e411 DE |
2981 | /* Find the compunit symtab associated with PC. |
2982 | This will read in debug info as necessary. | |
2983 | Backward compatibility, no section. */ | |
c906108c | 2984 | |
43f3e411 DE |
2985 | struct compunit_symtab * |
2986 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2987 | { |
43f3e411 | 2988 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2989 | } |
71a3c369 TT |
2990 | |
2991 | /* See symtab.h. */ | |
2992 | ||
2993 | struct symbol * | |
2994 | find_symbol_at_address (CORE_ADDR address) | |
2995 | { | |
2030c079 | 2996 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2997 | { |
2998 | if (objfile->sf == NULL | |
2999 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
3000 | continue; | |
71a3c369 | 3001 | |
aed57c53 TT |
3002 | struct compunit_symtab *symtab |
3003 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
3004 | if (symtab != NULL) | |
3005 | { | |
3006 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 3007 | |
aed57c53 | 3008 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 3009 | { |
582942f4 | 3010 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
3011 | struct block_iterator iter; |
3012 | struct symbol *sym; | |
3013 | ||
3014 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3015 | { | |
3016 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3017 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3018 | return sym; | |
3019 | } | |
71a3c369 | 3020 | } |
aed57c53 TT |
3021 | } |
3022 | } | |
71a3c369 TT |
3023 | |
3024 | return NULL; | |
3025 | } | |
3026 | ||
c906108c | 3027 | \f |
c5aa993b | 3028 | |
7e73cedf | 3029 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3030 | Return a structure containing a symtab pointer, a line number, |
3031 | and a pc range for the entire source line. | |
3032 | The value's .pc field is NOT the specified pc. | |
3033 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3034 | use the line that ends there. Otherwise, in that case, the line | |
3035 | that begins there is used. */ | |
3036 | ||
3037 | /* The big complication here is that a line may start in one file, and end just | |
3038 | before the start of another file. This usually occurs when you #include | |
3039 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3040 | range, we must search all symtabs associated with this compilation unit, and | |
3041 | find the one whose first PC is closer than that of the next line in this | |
3042 | symtab. */ | |
3043 | ||
c906108c | 3044 | struct symtab_and_line |
714835d5 | 3045 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3046 | { |
43f3e411 | 3047 | struct compunit_symtab *cust; |
52f0bd74 AC |
3048 | struct linetable *l; |
3049 | int len; | |
52f0bd74 | 3050 | struct linetable_entry *item; |
346d1dfe | 3051 | const struct blockvector *bv; |
7cbd4a93 | 3052 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3053 | |
3054 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3055 | ||
3056 | struct linetable_entry *best = NULL; | |
3057 | CORE_ADDR best_end = 0; | |
3058 | struct symtab *best_symtab = 0; | |
3059 | ||
3060 | /* Store here the first line number | |
3061 | of a file which contains the line at the smallest pc after PC. | |
3062 | If we don't find a line whose range contains PC, | |
3063 | we will use a line one less than this, | |
3064 | with a range from the start of that file to the first line's pc. */ | |
3065 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3066 | |
3067 | /* Info on best line seen in this file. */ | |
3068 | ||
3069 | struct linetable_entry *prev; | |
3070 | ||
3071 | /* If this pc is not from the current frame, | |
3072 | it is the address of the end of a call instruction. | |
3073 | Quite likely that is the start of the following statement. | |
3074 | But what we want is the statement containing the instruction. | |
3075 | Fudge the pc to make sure we get that. */ | |
3076 | ||
b77b1eb7 JB |
3077 | /* It's tempting to assume that, if we can't find debugging info for |
3078 | any function enclosing PC, that we shouldn't search for line | |
3079 | number info, either. However, GAS can emit line number info for | |
3080 | assembly files --- very helpful when debugging hand-written | |
3081 | assembly code. In such a case, we'd have no debug info for the | |
3082 | function, but we would have line info. */ | |
648f4f79 | 3083 | |
c906108c SS |
3084 | if (notcurrent) |
3085 | pc -= 1; | |
3086 | ||
c5aa993b | 3087 | /* elz: added this because this function returned the wrong |
c906108c | 3088 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3089 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3090 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3091 | taken to be the one of the line before the pc. */ |
3092 | ||
c906108c | 3093 | /* RT: Further explanation: |
c5aa993b | 3094 | |
c906108c SS |
3095 | * We have stubs (trampolines) inserted between procedures. |
3096 | * | |
3097 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3098 | * exists in the main image. | |
3099 | * | |
3100 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3101 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3102 | * the others appear as text. E.g.: |
3103 | * | |
9af17804 | 3104 | * Minimal symbol table for main image |
c906108c SS |
3105 | * main: code for main (text symbol) |
3106 | * shr1: stub (trampoline symbol) | |
3107 | * foo: code for foo (text symbol) | |
3108 | * ... | |
3109 | * Minimal symbol table for "shr1" image: | |
3110 | * ... | |
3111 | * shr1: code for shr1 (text symbol) | |
3112 | * ... | |
3113 | * | |
3114 | * So the code below is trying to detect if we are in the stub | |
3115 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3116 | * and if found, do the symbolization from the real-code address | |
3117 | * rather than the stub address. | |
3118 | * | |
3119 | * Assumptions being made about the minimal symbol table: | |
3120 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3121 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3122 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3123 | * symbol (the "foo" text symbol for example) and will not |
3124 | * return the trampoline. | |
3125 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3126 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3127 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3128 | * check for the address being the same, to avoid an |
3129 | * infinite recursion. | |
3130 | */ | |
c5aa993b | 3131 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3132 | if (msymbol.minsym != NULL) |
3133 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3134 | { |
77e371c0 | 3135 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3136 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3137 | NULL); |
3138 | ||
3139 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3140 | /* I eliminated this warning since it is coming out |
3141 | * in the following situation: | |
3142 | * gdb shmain // test program with shared libraries | |
3143 | * (gdb) break shr1 // function in shared lib | |
3144 | * Warning: In stub for ... | |
9af17804 | 3145 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3146 | * so of course we can't find the real func/line info, |
3147 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3148 | * So I commented out the warning. RT */ |
3e43a32a | 3149 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3150 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3151 | ; | |
c5aa993b | 3152 | /* fall through */ |
77e371c0 TT |
3153 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3154 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3155 | /* Avoid infinite recursion */ |
c378eb4e | 3156 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3157 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3158 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3159 | ; | |
c5aa993b JM |
3160 | /* fall through */ |
3161 | else | |
77e371c0 | 3162 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3163 | } |
c906108c | 3164 | |
51abb421 PA |
3165 | symtab_and_line val; |
3166 | val.pspace = current_program_space; | |
c906108c | 3167 | |
43f3e411 DE |
3168 | cust = find_pc_sect_compunit_symtab (pc, section); |
3169 | if (cust == NULL) | |
c906108c | 3170 | { |
c378eb4e | 3171 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3172 | if (notcurrent) |
3173 | pc++; | |
3174 | val.pc = pc; | |
3175 | return val; | |
3176 | } | |
3177 | ||
43f3e411 | 3178 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3179 | |
3180 | /* Look at all the symtabs that share this blockvector. | |
3181 | They all have the same apriori range, that we found was right; | |
3182 | but they have different line tables. */ | |
3183 | ||
5accd1a0 | 3184 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3185 | { |
3186 | /* Find the best line in this symtab. */ | |
43f3e411 | 3187 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3188 | if (!l) |
c5aa993b | 3189 | continue; |
c906108c SS |
3190 | len = l->nitems; |
3191 | if (len <= 0) | |
3192 | { | |
3193 | /* I think len can be zero if the symtab lacks line numbers | |
3194 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3195 | I'm not sure which, and maybe it depends on the symbol | |
3196 | reader). */ | |
3197 | continue; | |
3198 | } | |
3199 | ||
3200 | prev = NULL; | |
c378eb4e | 3201 | item = l->item; /* Get first line info. */ |
c906108c SS |
3202 | |
3203 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3204 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3205 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3206 | alt = item; |
c906108c | 3207 | |
b926417a | 3208 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3209 | const struct linetable_entry & lhs)->bool |
3210 | { | |
b926417a | 3211 | return comp_pc < lhs.pc; |
7cbe16e9 | 3212 | }; |
c906108c | 3213 | |
7cbe16e9 SR |
3214 | struct linetable_entry *first = item; |
3215 | struct linetable_entry *last = item + len; | |
3216 | item = std::upper_bound (first, last, pc, pc_compare); | |
3217 | if (item != first) | |
3218 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3219 | |
3220 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3221 | item points at the next line. If we ran off the end of the linetable |
3222 | (pc >= start of the last line), then prev == item. If pc < start of | |
3223 | the first line, prev will not be set. */ | |
c906108c SS |
3224 | |
3225 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3226 | If so, record this file, and its best line, as best so far. Don't |
3227 | save prev if it represents the end of a function (i.e. line number | |
3228 | 0) instead of a real line. */ | |
c906108c | 3229 | |
083ae935 | 3230 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3231 | { |
3232 | best = prev; | |
43f3e411 | 3233 | best_symtab = iter_s; |
25d53da1 KB |
3234 | |
3235 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3236 | if (best_end <= best->pc) | |
3237 | best_end = 0; | |
c906108c | 3238 | } |
25d53da1 KB |
3239 | |
3240 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3241 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3242 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3243 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3244 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3245 | best_end = item->pc; |
c906108c SS |
3246 | } |
3247 | ||
3248 | if (!best_symtab) | |
3249 | { | |
e86e87f7 DJ |
3250 | /* If we didn't find any line number info, just return zeros. |
3251 | We used to return alt->line - 1 here, but that could be | |
3252 | anywhere; if we don't have line number info for this PC, | |
3253 | don't make some up. */ | |
3254 | val.pc = pc; | |
c906108c | 3255 | } |
e8717518 FF |
3256 | else if (best->line == 0) |
3257 | { | |
3258 | /* If our best fit is in a range of PC's for which no line | |
3259 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3260 | find any valid line information. */ |
e8717518 FF |
3261 | val.pc = pc; |
3262 | } | |
c906108c SS |
3263 | else |
3264 | { | |
3265 | val.symtab = best_symtab; | |
3266 | val.line = best->line; | |
3267 | val.pc = best->pc; | |
3268 | if (best_end && (!alt || best_end < alt->pc)) | |
3269 | val.end = best_end; | |
3270 | else if (alt) | |
3271 | val.end = alt->pc; | |
3272 | else | |
3273 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3274 | } | |
3275 | val.section = section; | |
3276 | return val; | |
3277 | } | |
3278 | ||
c378eb4e | 3279 | /* Backward compatibility (no section). */ |
c906108c SS |
3280 | |
3281 | struct symtab_and_line | |
fba45db2 | 3282 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3283 | { |
714835d5 | 3284 | struct obj_section *section; |
c906108c SS |
3285 | |
3286 | section = find_pc_overlay (pc); | |
3287 | if (pc_in_unmapped_range (pc, section)) | |
3288 | pc = overlay_mapped_address (pc, section); | |
3289 | return find_pc_sect_line (pc, section, notcurrent); | |
3290 | } | |
34248c3a DE |
3291 | |
3292 | /* See symtab.h. */ | |
3293 | ||
3294 | struct symtab * | |
3295 | find_pc_line_symtab (CORE_ADDR pc) | |
3296 | { | |
3297 | struct symtab_and_line sal; | |
3298 | ||
3299 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3300 | There are currently no callers that ever pass non-zero. */ | |
3301 | sal = find_pc_line (pc, 0); | |
3302 | return sal.symtab; | |
3303 | } | |
c906108c | 3304 | \f |
c906108c SS |
3305 | /* Find line number LINE in any symtab whose name is the same as |
3306 | SYMTAB. | |
3307 | ||
3308 | If found, return the symtab that contains the linetable in which it was | |
3309 | found, set *INDEX to the index in the linetable of the best entry | |
3310 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3311 | exact match. | |
3312 | ||
3313 | If not found, return NULL. */ | |
3314 | ||
50641945 | 3315 | struct symtab * |
5accd1a0 | 3316 | find_line_symtab (struct symtab *sym_tab, int line, |
433759f7 | 3317 | int *index, int *exact_match) |
c906108c | 3318 | { |
6f43c46f | 3319 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3320 | |
3321 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3322 | so far seen. */ | |
3323 | ||
3324 | int best_index; | |
3325 | struct linetable *best_linetable; | |
3326 | struct symtab *best_symtab; | |
3327 | ||
3328 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3329 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3330 | best_symtab = sym_tab; | |
f8eba3c6 | 3331 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3332 | if (best_index < 0 || !exact) |
3333 | { | |
3334 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3335 | another symtab with the same name. In the case of xcoff, |
3336 | multiple csects for one source file (produced by IBM's FORTRAN | |
3337 | compiler) produce multiple symtabs (this is unavoidable | |
3338 | assuming csects can be at arbitrary places in memory and that | |
3339 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3340 | |
3341 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3342 | or 0 if none has been seen so far. |
3343 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3344 | int best; |
3345 | ||
c906108c SS |
3346 | if (best_index >= 0) |
3347 | best = best_linetable->item[best_index].line; | |
3348 | else | |
3349 | best = 0; | |
3350 | ||
2030c079 | 3351 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3352 | { |
3353 | if (objfile->sf) | |
3354 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3355 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3356 | } |
51432cca | 3357 | |
2030c079 | 3358 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3359 | { |
b669c953 | 3360 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3361 | { |
3362 | for (symtab *s : compunit_filetabs (cu)) | |
3363 | { | |
3364 | struct linetable *l; | |
3365 | int ind; | |
3366 | ||
3367 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3368 | continue; | |
3369 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3370 | symtab_to_fullname (s)) != 0) | |
3371 | continue; | |
3372 | l = SYMTAB_LINETABLE (s); | |
3373 | ind = find_line_common (l, line, &exact, 0); | |
3374 | if (ind >= 0) | |
3375 | { | |
3376 | if (exact) | |
3377 | { | |
3378 | best_index = ind; | |
3379 | best_linetable = l; | |
3380 | best_symtab = s; | |
3381 | goto done; | |
3382 | } | |
3383 | if (best == 0 || l->item[ind].line < best) | |
3384 | { | |
3385 | best = l->item[ind].line; | |
3386 | best_index = ind; | |
3387 | best_linetable = l; | |
3388 | best_symtab = s; | |
3389 | } | |
3390 | } | |
3391 | } | |
3392 | } | |
3393 | } | |
c906108c | 3394 | } |
c5aa993b | 3395 | done: |
c906108c SS |
3396 | if (best_index < 0) |
3397 | return NULL; | |
3398 | ||
3399 | if (index) | |
3400 | *index = best_index; | |
3401 | if (exact_match) | |
3402 | *exact_match = exact; | |
3403 | ||
3404 | return best_symtab; | |
3405 | } | |
f8eba3c6 TT |
3406 | |
3407 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3408 | exactly match LINE. Returns an empty vector if there are no exact |
3409 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3410 | |
67d89901 | 3411 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3412 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3413 | struct linetable_entry **best_item) | |
3414 | { | |
c656bca5 | 3415 | int start = 0; |
67d89901 | 3416 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3417 | |
3418 | /* First, collect all the PCs that are at this line. */ | |
3419 | while (1) | |
3420 | { | |
3421 | int was_exact; | |
3422 | int idx; | |
3423 | ||
8435453b DE |
3424 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3425 | start); | |
f8eba3c6 TT |
3426 | if (idx < 0) |
3427 | break; | |
3428 | ||
3429 | if (!was_exact) | |
3430 | { | |
8435453b | 3431 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3432 | |
3433 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3434 | *best_item = item; | |
3435 | ||
3436 | break; | |
3437 | } | |
3438 | ||
67d89901 | 3439 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3440 | start = idx + 1; |
3441 | } | |
3442 | ||
3443 | return result; | |
3444 | } | |
3445 | ||
c906108c SS |
3446 | \f |
3447 | /* Set the PC value for a given source file and line number and return true. | |
3448 | Returns zero for invalid line number (and sets the PC to 0). | |
3449 | The source file is specified with a struct symtab. */ | |
3450 | ||
3451 | int | |
fba45db2 | 3452 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3453 | { |
3454 | struct linetable *l; | |
3455 | int ind; | |
3456 | ||
3457 | *pc = 0; | |
3458 | if (symtab == 0) | |
3459 | return 0; | |
3460 | ||
3461 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3462 | if (symtab != NULL) | |
3463 | { | |
8435453b | 3464 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3465 | *pc = l->item[ind].pc; |
3466 | return 1; | |
3467 | } | |
3468 | else | |
3469 | return 0; | |
3470 | } | |
3471 | ||
3472 | /* Find the range of pc values in a line. | |
3473 | Store the starting pc of the line into *STARTPTR | |
3474 | and the ending pc (start of next line) into *ENDPTR. | |
3475 | Returns 1 to indicate success. | |
3476 | Returns 0 if could not find the specified line. */ | |
3477 | ||
3478 | int | |
fba45db2 KB |
3479 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3480 | CORE_ADDR *endptr) | |
c906108c SS |
3481 | { |
3482 | CORE_ADDR startaddr; | |
3483 | struct symtab_and_line found_sal; | |
3484 | ||
3485 | startaddr = sal.pc; | |
c5aa993b | 3486 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3487 | return 0; |
3488 | ||
3489 | /* This whole function is based on address. For example, if line 10 has | |
3490 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3491 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3492 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3493 | This also insures that we never give a range like "starts at 0x134 | |
3494 | and ends at 0x12c". */ | |
3495 | ||
3496 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3497 | if (found_sal.line != sal.line) | |
3498 | { | |
3499 | /* The specified line (sal) has zero bytes. */ | |
3500 | *startptr = found_sal.pc; | |
3501 | *endptr = found_sal.pc; | |
3502 | } | |
3503 | else | |
3504 | { | |
3505 | *startptr = found_sal.pc; | |
3506 | *endptr = found_sal.end; | |
3507 | } | |
3508 | return 1; | |
3509 | } | |
3510 | ||
3511 | /* Given a line table and a line number, return the index into the line | |
3512 | table for the pc of the nearest line whose number is >= the specified one. | |
3513 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3514 | START is the index at which to start searching the line table. |
c906108c SS |
3515 | |
3516 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3517 | ||
3518 | static int | |
aa1ee363 | 3519 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3520 | int *exact_match, int start) |
c906108c | 3521 | { |
52f0bd74 AC |
3522 | int i; |
3523 | int len; | |
c906108c SS |
3524 | |
3525 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3526 | or 0 if none has been seen so far. | |
3527 | BEST_INDEX identifies the item for it. */ | |
3528 | ||
3529 | int best_index = -1; | |
3530 | int best = 0; | |
3531 | ||
b7589f7d DJ |
3532 | *exact_match = 0; |
3533 | ||
c906108c SS |
3534 | if (lineno <= 0) |
3535 | return -1; | |
3536 | if (l == 0) | |
3537 | return -1; | |
3538 | ||
3539 | len = l->nitems; | |
f8eba3c6 | 3540 | for (i = start; i < len; i++) |
c906108c | 3541 | { |
aa1ee363 | 3542 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3543 | |
3544 | if (item->line == lineno) | |
3545 | { | |
3546 | /* Return the first (lowest address) entry which matches. */ | |
3547 | *exact_match = 1; | |
3548 | return i; | |
3549 | } | |
3550 | ||
3551 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3552 | { | |
3553 | best = item->line; | |
3554 | best_index = i; | |
3555 | } | |
3556 | } | |
3557 | ||
3558 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3559 | return best_index; |
3560 | } | |
3561 | ||
3562 | int | |
fba45db2 | 3563 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3564 | { |
3565 | struct symtab_and_line sal; | |
433759f7 | 3566 | |
c906108c SS |
3567 | sal = find_pc_line (pc, 0); |
3568 | *startptr = sal.pc; | |
3569 | *endptr = sal.end; | |
3570 | return sal.symtab != 0; | |
3571 | } | |
3572 | ||
cd2bb709 PA |
3573 | /* Helper for find_function_start_sal. Does most of the work, except |
3574 | setting the sal's symbol. */ | |
aab2f208 | 3575 | |
cd2bb709 PA |
3576 | static symtab_and_line |
3577 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3578 | bool funfirstline) | |
aab2f208 | 3579 | { |
42ddae10 | 3580 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3581 | |
6e22494e JK |
3582 | if (funfirstline && sal.symtab != NULL |
3583 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3584 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3585 | { | |
42ddae10 | 3586 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3587 | |
42ddae10 | 3588 | sal.pc = func_addr; |
141c5cc4 JK |
3589 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3590 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3591 | return sal; |
3592 | } | |
3593 | ||
aab2f208 | 3594 | /* We always should have a line for the function start address. |
42ddae10 | 3595 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3596 | just the PC and hope that skip_prologue_sal (if requested) |
3597 | can find a line number for after the prologue. */ | |
42ddae10 | 3598 | if (sal.pc < func_addr) |
aab2f208 | 3599 | { |
51abb421 | 3600 | sal = {}; |
aab2f208 | 3601 | sal.pspace = current_program_space; |
42ddae10 | 3602 | sal.pc = func_addr; |
08be3fe3 | 3603 | sal.section = section; |
aab2f208 DE |
3604 | } |
3605 | ||
3606 | if (funfirstline) | |
3607 | skip_prologue_sal (&sal); | |
3608 | ||
3609 | return sal; | |
3610 | } | |
3611 | ||
42ddae10 PA |
3612 | /* See symtab.h. */ |
3613 | ||
cd2bb709 PA |
3614 | symtab_and_line |
3615 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3616 | bool funfirstline) | |
3617 | { | |
3618 | symtab_and_line sal | |
3619 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3620 | ||
3621 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3622 | the symtab and linenumber, but not a symbol. Fill in the | |
3623 | function symbol too. */ | |
3624 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3625 | ||
3626 | return sal; | |
3627 | } | |
3628 | ||
3629 | /* See symtab.h. */ | |
3630 | ||
42ddae10 PA |
3631 | symtab_and_line |
3632 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3633 | { | |
3634 | fixup_symbol_section (sym, NULL); | |
3635 | symtab_and_line sal | |
2b1ffcfd | 3636 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3637 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3638 | funfirstline); | |
42ddae10 PA |
3639 | sal.symbol = sym; |
3640 | return sal; | |
3641 | } | |
3642 | ||
3643 | ||
8c7a1ee8 EZ |
3644 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3645 | address for that function that has an entry in SYMTAB's line info | |
3646 | table. If such an entry cannot be found, return FUNC_ADDR | |
3647 | unaltered. */ | |
eca864fe | 3648 | |
70221824 | 3649 | static CORE_ADDR |
8c7a1ee8 EZ |
3650 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3651 | { | |
3652 | CORE_ADDR func_start, func_end; | |
3653 | struct linetable *l; | |
952a6d41 | 3654 | int i; |
8c7a1ee8 EZ |
3655 | |
3656 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3657 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3658 | if (l == NULL) |
3659 | return func_addr; | |
3660 | ||
3661 | /* Get the range for the function's PC values, or give up if we | |
3662 | cannot, for some reason. */ | |
3663 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3664 | return func_addr; | |
3665 | ||
3666 | /* Linetable entries are ordered by PC values, see the commentary in | |
3667 | symtab.h where `struct linetable' is defined. Thus, the first | |
3668 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3669 | address we are looking for. */ | |
3670 | for (i = 0; i < l->nitems; i++) | |
3671 | { | |
3672 | struct linetable_entry *item = &(l->item[i]); | |
3673 | ||
3674 | /* Don't use line numbers of zero, they mark special entries in | |
3675 | the table. See the commentary on symtab.h before the | |
3676 | definition of struct linetable. */ | |
3677 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3678 | return item->pc; | |
3679 | } | |
3680 | ||
3681 | return func_addr; | |
3682 | } | |
3683 | ||
059acae7 UW |
3684 | /* Adjust SAL to the first instruction past the function prologue. |
3685 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3686 | If the line number was explicitly specified then the SAL can still be |
3687 | updated, unless the language for SAL is assembler, in which case the SAL | |
3688 | will be left unchanged. | |
3689 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3690 | |
059acae7 UW |
3691 | void |
3692 | skip_prologue_sal (struct symtab_and_line *sal) | |
3693 | { | |
3694 | struct symbol *sym; | |
3695 | struct symtab_and_line start_sal; | |
8be455d7 | 3696 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3697 | struct obj_section *section; |
3698 | const char *name; | |
3699 | struct objfile *objfile; | |
3700 | struct gdbarch *gdbarch; | |
3977b71f | 3701 | const struct block *b, *function_block; |
8be455d7 | 3702 | int force_skip, skip; |
c906108c | 3703 | |
a4b411d6 | 3704 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3705 | if (sal->explicit_pc) |
3706 | return; | |
6c95b8df | 3707 | |
5b0e2db4 AB |
3708 | /* In assembly code, if the user asks for a specific line then we should |
3709 | not adjust the SAL. The user already has instruction level | |
3710 | visibility in this case, so selecting a line other than one requested | |
3711 | is likely to be the wrong choice. */ | |
3712 | if (sal->symtab != nullptr | |
3713 | && sal->explicit_line | |
3714 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3715 | return; | |
3716 | ||
5ed8105e PA |
3717 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3718 | ||
059acae7 | 3719 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3720 | |
059acae7 UW |
3721 | sym = find_pc_sect_function (sal->pc, sal->section); |
3722 | if (sym != NULL) | |
bccdca4a | 3723 | { |
059acae7 UW |
3724 | fixup_symbol_section (sym, NULL); |
3725 | ||
08be3fe3 | 3726 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3727 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3728 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3729 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3730 | } |
059acae7 UW |
3731 | else |
3732 | { | |
7c7b6655 TT |
3733 | struct bound_minimal_symbol msymbol |
3734 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3735 | |
7c7b6655 | 3736 | if (msymbol.minsym == NULL) |
5ed8105e | 3737 | return; |
059acae7 | 3738 | |
7c7b6655 | 3739 | objfile = msymbol.objfile; |
77e371c0 | 3740 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3741 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3742 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3743 | } |
3744 | ||
3745 | gdbarch = get_objfile_arch (objfile); | |
3746 | ||
8be455d7 JK |
3747 | /* Process the prologue in two passes. In the first pass try to skip the |
3748 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3749 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3750 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3751 | |
8be455d7 JK |
3752 | skip = 1; |
3753 | force_skip = 1; | |
059acae7 | 3754 | |
8be455d7 JK |
3755 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3756 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3757 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3758 | if (sym != NULL |
3759 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3760 | force_skip = 0; |
059acae7 | 3761 | |
8be455d7 JK |
3762 | saved_pc = pc; |
3763 | do | |
c906108c | 3764 | { |
8be455d7 | 3765 | pc = saved_pc; |
4309257c | 3766 | |
8be455d7 JK |
3767 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3768 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3769 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3770 | pc = overlay_unmapped_address (pc, section); | |
3771 | ||
3772 | /* Skip "first line" of function (which is actually its prologue). */ | |
3773 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3774 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3775 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3776 | if (skip) |
46a62268 | 3777 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3778 | |
3779 | /* For overlays, map pc back into its mapped VMA range. */ | |
3780 | pc = overlay_mapped_address (pc, section); | |
3781 | ||
3782 | /* Calculate line number. */ | |
059acae7 | 3783 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3784 | |
3785 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3786 | line is still part of the same function. */ | |
3787 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3788 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3789 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3790 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3791 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3792 | { |
3793 | /* First pc of next line */ | |
3794 | pc = start_sal.end; | |
3795 | /* Recalculate the line number (might not be N+1). */ | |
3796 | start_sal = find_pc_sect_line (pc, section, 0); | |
3797 | } | |
3798 | ||
3799 | /* On targets with executable formats that don't have a concept of | |
3800 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3801 | to `__main' in `main' between the prologue and before user | |
3802 | code. */ | |
3803 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3804 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3805 | { |
3806 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3807 | /* Recalculate the line number (might not be N+1). */ | |
3808 | start_sal = find_pc_sect_line (pc, section, 0); | |
3809 | force_skip = 1; | |
3810 | } | |
4309257c | 3811 | } |
8be455d7 | 3812 | while (!force_skip && skip--); |
4309257c | 3813 | |
8c7a1ee8 EZ |
3814 | /* If we still don't have a valid source line, try to find the first |
3815 | PC in the lineinfo table that belongs to the same function. This | |
3816 | happens with COFF debug info, which does not seem to have an | |
3817 | entry in lineinfo table for the code after the prologue which has | |
3818 | no direct relation to source. For example, this was found to be | |
3819 | the case with the DJGPP target using "gcc -gcoff" when the | |
3820 | compiler inserted code after the prologue to make sure the stack | |
3821 | is aligned. */ | |
8be455d7 | 3822 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3823 | { |
08be3fe3 | 3824 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3825 | /* Recalculate the line number. */ |
059acae7 | 3826 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3827 | } |
3828 | ||
059acae7 UW |
3829 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3830 | forward SAL to the end of the prologue. */ | |
3831 | if (sal->pc >= pc) | |
3832 | return; | |
3833 | ||
3834 | sal->pc = pc; | |
3835 | sal->section = section; | |
059acae7 UW |
3836 | sal->symtab = start_sal.symtab; |
3837 | sal->line = start_sal.line; | |
3838 | sal->end = start_sal.end; | |
c906108c | 3839 | |
edb3359d DJ |
3840 | /* Check if we are now inside an inlined function. If we can, |
3841 | use the call site of the function instead. */ | |
059acae7 | 3842 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3843 | function_block = NULL; |
3844 | while (b != NULL) | |
3845 | { | |
3846 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3847 | function_block = b; | |
3848 | else if (BLOCK_FUNCTION (b) != NULL) | |
3849 | break; | |
3850 | b = BLOCK_SUPERBLOCK (b); | |
3851 | } | |
3852 | if (function_block != NULL | |
3853 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3854 | { | |
059acae7 | 3855 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3856 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3857 | } |
c906108c | 3858 | } |
50641945 | 3859 | |
f1f58506 DE |
3860 | /* Given PC at the function's start address, attempt to find the |
3861 | prologue end using SAL information. Return zero if the skip fails. | |
3862 | ||
3863 | A non-optimized prologue traditionally has one SAL for the function | |
3864 | and a second for the function body. A single line function has | |
3865 | them both pointing at the same line. | |
3866 | ||
3867 | An optimized prologue is similar but the prologue may contain | |
3868 | instructions (SALs) from the instruction body. Need to skip those | |
3869 | while not getting into the function body. | |
3870 | ||
3871 | The functions end point and an increasing SAL line are used as | |
3872 | indicators of the prologue's endpoint. | |
3873 | ||
3874 | This code is based on the function refine_prologue_limit | |
3875 | (found in ia64). */ | |
3876 | ||
3877 | CORE_ADDR | |
3878 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3879 | { | |
3880 | struct symtab_and_line prologue_sal; | |
3881 | CORE_ADDR start_pc; | |
3882 | CORE_ADDR end_pc; | |
3883 | const struct block *bl; | |
3884 | ||
3885 | /* Get an initial range for the function. */ | |
3886 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3887 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3888 | ||
3889 | prologue_sal = find_pc_line (start_pc, 0); | |
3890 | if (prologue_sal.line != 0) | |
3891 | { | |
3892 | /* For languages other than assembly, treat two consecutive line | |
3893 | entries at the same address as a zero-instruction prologue. | |
3894 | The GNU assembler emits separate line notes for each instruction | |
3895 | in a multi-instruction macro, but compilers generally will not | |
3896 | do this. */ | |
3897 | if (prologue_sal.symtab->language != language_asm) | |
3898 | { | |
8435453b | 3899 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3900 | int idx = 0; |
3901 | ||
3902 | /* Skip any earlier lines, and any end-of-sequence marker | |
3903 | from a previous function. */ | |
3904 | while (linetable->item[idx].pc != prologue_sal.pc | |
3905 | || linetable->item[idx].line == 0) | |
3906 | idx++; | |
3907 | ||
3908 | if (idx+1 < linetable->nitems | |
3909 | && linetable->item[idx+1].line != 0 | |
3910 | && linetable->item[idx+1].pc == start_pc) | |
3911 | return start_pc; | |
3912 | } | |
3913 | ||
3914 | /* If there is only one sal that covers the entire function, | |
3915 | then it is probably a single line function, like | |
3916 | "foo(){}". */ | |
3917 | if (prologue_sal.end >= end_pc) | |
3918 | return 0; | |
3919 | ||
3920 | while (prologue_sal.end < end_pc) | |
3921 | { | |
3922 | struct symtab_and_line sal; | |
3923 | ||
3924 | sal = find_pc_line (prologue_sal.end, 0); | |
3925 | if (sal.line == 0) | |
3926 | break; | |
3927 | /* Assume that a consecutive SAL for the same (or larger) | |
3928 | line mark the prologue -> body transition. */ | |
3929 | if (sal.line >= prologue_sal.line) | |
3930 | break; | |
3931 | /* Likewise if we are in a different symtab altogether | |
3932 | (e.g. within a file included via #include). */ | |
3933 | if (sal.symtab != prologue_sal.symtab) | |
3934 | break; | |
3935 | ||
3936 | /* The line number is smaller. Check that it's from the | |
3937 | same function, not something inlined. If it's inlined, | |
3938 | then there is no point comparing the line numbers. */ | |
3939 | bl = block_for_pc (prologue_sal.end); | |
3940 | while (bl) | |
3941 | { | |
3942 | if (block_inlined_p (bl)) | |
3943 | break; | |
3944 | if (BLOCK_FUNCTION (bl)) | |
3945 | { | |
3946 | bl = NULL; | |
3947 | break; | |
3948 | } | |
3949 | bl = BLOCK_SUPERBLOCK (bl); | |
3950 | } | |
3951 | if (bl != NULL) | |
3952 | break; | |
3953 | ||
3954 | /* The case in which compiler's optimizer/scheduler has | |
3955 | moved instructions into the prologue. We look ahead in | |
3956 | the function looking for address ranges whose | |
3957 | corresponding line number is less the first one that we | |
3958 | found for the function. This is more conservative then | |
3959 | refine_prologue_limit which scans a large number of SALs | |
3960 | looking for any in the prologue. */ | |
3961 | prologue_sal = sal; | |
3962 | } | |
3963 | } | |
3964 | ||
3965 | if (prologue_sal.end < end_pc) | |
3966 | /* Return the end of this line, or zero if we could not find a | |
3967 | line. */ | |
3968 | return prologue_sal.end; | |
3969 | else | |
3970 | /* Don't return END_PC, which is past the end of the function. */ | |
3971 | return prologue_sal.pc; | |
3972 | } | |
bf223d3e PA |
3973 | |
3974 | /* See symtab.h. */ | |
3975 | ||
3976 | symbol * | |
3977 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3978 | { | |
4024cf2b PA |
3979 | CORE_ADDR func_addr; |
3980 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3981 | return NULL; |
3982 | ||
4024cf2b | 3983 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3984 | if (sym != NULL |
3985 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3986 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3987 | return sym; |
3988 | ||
3989 | return NULL; | |
3990 | } | |
3991 | ||
f1f58506 | 3992 | \f |
c906108c SS |
3993 | /* If P is of the form "operator[ \t]+..." where `...' is |
3994 | some legitimate operator text, return a pointer to the | |
3995 | beginning of the substring of the operator text. | |
3996 | Otherwise, return "". */ | |
eca864fe | 3997 | |
96142726 TT |
3998 | static const char * |
3999 | operator_chars (const char *p, const char **end) | |
c906108c SS |
4000 | { |
4001 | *end = ""; | |
8090b426 | 4002 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 4003 | return *end; |
8090b426 | 4004 | p += CP_OPERATOR_LEN; |
c906108c SS |
4005 | |
4006 | /* Don't get faked out by `operator' being part of a longer | |
4007 | identifier. */ | |
c5aa993b | 4008 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4009 | return *end; |
4010 | ||
4011 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4012 | while (*p == ' ' || *p == '\t') | |
4013 | p++; | |
4014 | ||
c378eb4e | 4015 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4016 | |
c5aa993b | 4017 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4018 | { |
96142726 | 4019 | const char *q = p + 1; |
433759f7 | 4020 | |
c5aa993b | 4021 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4022 | q++; |
4023 | *end = q; | |
4024 | return p; | |
4025 | } | |
4026 | ||
53e8ad3d MS |
4027 | while (*p) |
4028 | switch (*p) | |
4029 | { | |
4030 | case '\\': /* regexp quoting */ | |
4031 | if (p[1] == '*') | |
4032 | { | |
3e43a32a | 4033 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4034 | *end = p + 3; |
4035 | else /* 'operator\*' */ | |
4036 | *end = p + 2; | |
4037 | return p; | |
4038 | } | |
4039 | else if (p[1] == '[') | |
4040 | { | |
4041 | if (p[2] == ']') | |
3e43a32a MS |
4042 | error (_("mismatched quoting on brackets, " |
4043 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4044 | else if (p[2] == '\\' && p[3] == ']') |
4045 | { | |
4046 | *end = p + 4; /* 'operator\[\]' */ | |
4047 | return p; | |
4048 | } | |
4049 | else | |
8a3fe4f8 | 4050 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4051 | } |
9af17804 | 4052 | else |
53e8ad3d | 4053 | { |
c378eb4e | 4054 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
4055 | p++; |
4056 | continue; | |
4057 | } | |
4058 | break; | |
4059 | case '!': | |
4060 | case '=': | |
4061 | case '*': | |
4062 | case '/': | |
4063 | case '%': | |
4064 | case '^': | |
4065 | if (p[1] == '=') | |
4066 | *end = p + 2; | |
4067 | else | |
4068 | *end = p + 1; | |
4069 | return p; | |
4070 | case '<': | |
4071 | case '>': | |
4072 | case '+': | |
4073 | case '-': | |
4074 | case '&': | |
4075 | case '|': | |
4076 | if (p[0] == '-' && p[1] == '>') | |
4077 | { | |
c378eb4e | 4078 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4079 | if (p[2] == '*') |
4080 | { | |
4081 | *end = p + 3; /* 'operator->*' */ | |
4082 | return p; | |
4083 | } | |
4084 | else if (p[2] == '\\') | |
4085 | { | |
4086 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4087 | return p; | |
4088 | } | |
4089 | else | |
4090 | { | |
4091 | *end = p + 2; /* 'operator->' */ | |
4092 | return p; | |
4093 | } | |
4094 | } | |
4095 | if (p[1] == '=' || p[1] == p[0]) | |
4096 | *end = p + 2; | |
4097 | else | |
4098 | *end = p + 1; | |
4099 | return p; | |
4100 | case '~': | |
4101 | case ',': | |
c5aa993b | 4102 | *end = p + 1; |
53e8ad3d MS |
4103 | return p; |
4104 | case '(': | |
4105 | if (p[1] != ')') | |
3e43a32a MS |
4106 | error (_("`operator ()' must be specified " |
4107 | "without whitespace in `()'")); | |
c5aa993b | 4108 | *end = p + 2; |
53e8ad3d MS |
4109 | return p; |
4110 | case '?': | |
4111 | if (p[1] != ':') | |
3e43a32a MS |
4112 | error (_("`operator ?:' must be specified " |
4113 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4114 | *end = p + 2; |
4115 | return p; | |
4116 | case '[': | |
4117 | if (p[1] != ']') | |
3e43a32a MS |
4118 | error (_("`operator []' must be specified " |
4119 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4120 | *end = p + 2; |
4121 | return p; | |
4122 | default: | |
8a3fe4f8 | 4123 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4124 | break; |
4125 | } | |
4126 | ||
c906108c SS |
4127 | *end = ""; |
4128 | return *end; | |
4129 | } | |
c906108c | 4130 | \f |
c5aa993b | 4131 | |
28cd9371 PW |
4132 | /* What part to match in a file name. */ |
4133 | ||
4134 | struct filename_partial_match_opts | |
4135 | { | |
4136 | /* Only match the directory name part. */ | |
4137 | int dirname = false; | |
4138 | ||
4139 | /* Only match the basename part. */ | |
4140 | int basename = false; | |
4141 | }; | |
4142 | ||
9fdc877b DE |
4143 | /* Data structure to maintain printing state for output_source_filename. */ |
4144 | ||
4145 | struct output_source_filename_data | |
4146 | { | |
28cd9371 PW |
4147 | /* Output only filenames matching REGEXP. */ |
4148 | std::string regexp; | |
4149 | gdb::optional<compiled_regex> c_regexp; | |
4150 | /* Possibly only match a part of the filename. */ | |
4151 | filename_partial_match_opts partial_match; | |
4152 | ||
4153 | ||
9fdc877b DE |
4154 | /* Cache of what we've seen so far. */ |
4155 | struct filename_seen_cache *filename_seen_cache; | |
4156 | ||
4157 | /* Flag of whether we're printing the first one. */ | |
4158 | int first; | |
4159 | }; | |
4160 | ||
c94fdfd0 | 4161 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4162 | NAME is the name to print. |
4163 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4164 | |
c94fdfd0 | 4165 | static void |
9fdc877b DE |
4166 | output_source_filename (const char *name, |
4167 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4168 | { |
4169 | /* Since a single source file can result in several partial symbol | |
4170 | tables, we need to avoid printing it more than once. Note: if | |
4171 | some of the psymtabs are read in and some are not, it gets | |
4172 | printed both under "Source files for which symbols have been | |
4173 | read" and "Source files for which symbols will be read in on | |
4174 | demand". I consider this a reasonable way to deal with the | |
4175 | situation. I'm not sure whether this can also happen for | |
4176 | symtabs; it doesn't hurt to check. */ | |
4177 | ||
4178 | /* Was NAME already seen? */ | |
bbf2f4df | 4179 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4180 | { |
4181 | /* Yes; don't print it again. */ | |
4182 | return; | |
4183 | } | |
9fdc877b | 4184 | |
28cd9371 PW |
4185 | /* Does it match data->regexp? */ |
4186 | if (data->c_regexp.has_value ()) | |
4187 | { | |
4188 | const char *to_match; | |
4189 | std::string dirname; | |
4190 | ||
4191 | if (data->partial_match.dirname) | |
4192 | { | |
4193 | dirname = ldirname (name); | |
4194 | to_match = dirname.c_str (); | |
4195 | } | |
4196 | else if (data->partial_match.basename) | |
4197 | to_match = lbasename (name); | |
4198 | else | |
4199 | to_match = name; | |
4200 | ||
4201 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4202 | return; | |
4203 | } | |
4204 | ||
4205 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4206 | if (! data->first) |
4207 | printf_filtered (", "); | |
4208 | data->first = 0; | |
c906108c SS |
4209 | |
4210 | wrap_here (""); | |
1ed9f74e | 4211 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4212 | } |
c906108c | 4213 | |
ccefe4c4 | 4214 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4215 | |
ccefe4c4 | 4216 | static void |
533a737e | 4217 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4218 | void *data) |
4219 | { | |
19ba03f4 SM |
4220 | output_source_filename (fullname ? fullname : filename, |
4221 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4222 | } |
4223 | ||
28cd9371 PW |
4224 | using isrc_flag_option_def |
4225 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4226 | ||
4227 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4228 | ||
4229 | isrc_flag_option_def { | |
4230 | "dirname", | |
4231 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4232 | N_("Show only the files having a dirname matching REGEXP."), | |
4233 | }, | |
4234 | ||
4235 | isrc_flag_option_def { | |
4236 | "basename", | |
4237 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4238 | N_("Show only the files having a basename matching REGEXP."), | |
4239 | }, | |
4240 | ||
4241 | }; | |
4242 | ||
4243 | /* Create an option_def_group for the "info sources" options, with | |
4244 | ISRC_OPTS as context. */ | |
4245 | ||
4246 | static inline gdb::option::option_def_group | |
4247 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4248 | { | |
4249 | return {{info_sources_option_defs}, isrc_opts}; | |
4250 | } | |
4251 | ||
4252 | /* Prints the header message for the source files that will be printed | |
4253 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4254 | that tells what will or has been done with the symbols of the | |
4255 | matching source files. */ | |
4256 | ||
c906108c | 4257 | static void |
28cd9371 PW |
4258 | print_info_sources_header (const char *symbol_msg, |
4259 | const struct output_source_filename_data *data) | |
4260 | { | |
4261 | puts_filtered (symbol_msg); | |
4262 | if (!data->regexp.empty ()) | |
4263 | { | |
4264 | if (data->partial_match.dirname) | |
4265 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4266 | data->regexp.c_str ()); | |
4267 | else if (data->partial_match.basename) | |
4268 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4269 | data->regexp.c_str ()); | |
4270 | else | |
4271 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4272 | data->regexp.c_str ()); | |
4273 | } | |
4274 | puts_filtered ("\n"); | |
4275 | } | |
4276 | ||
4277 | /* Completer for "info sources". */ | |
4278 | ||
4279 | static void | |
4280 | info_sources_command_completer (cmd_list_element *ignore, | |
4281 | completion_tracker &tracker, | |
4282 | const char *text, const char *word) | |
4283 | { | |
4284 | const auto group = make_info_sources_options_def_group (nullptr); | |
4285 | if (gdb::option::complete_options | |
4286 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4287 | return; | |
4288 | } | |
4289 | ||
4290 | static void | |
4291 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4292 | { |
9fdc877b | 4293 | struct output_source_filename_data data; |
c5aa993b | 4294 | |
c906108c SS |
4295 | if (!have_full_symbols () && !have_partial_symbols ()) |
4296 | { | |
8a3fe4f8 | 4297 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4298 | } |
c5aa993b | 4299 | |
bbf2f4df PA |
4300 | filename_seen_cache filenames_seen; |
4301 | ||
28cd9371 PW |
4302 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4303 | ||
4304 | gdb::option::process_options | |
4305 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4306 | |
28cd9371 PW |
4307 | if (args != NULL && *args != '\000') |
4308 | data.regexp = args; | |
c906108c | 4309 | |
28cd9371 | 4310 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4311 | data.first = 1; |
28cd9371 PW |
4312 | |
4313 | if (data.partial_match.dirname && data.partial_match.basename) | |
4314 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4315 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4316 | && data.regexp.empty ()) | |
4317 | error (_("Missing REGEXP for 'info sources'.")); | |
4318 | ||
4319 | if (data.regexp.empty ()) | |
4320 | data.c_regexp.reset (); | |
4321 | else | |
4322 | { | |
4323 | int cflags = REG_NOSUB; | |
4324 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4325 | cflags |= REG_ICASE; | |
4326 | #endif | |
4327 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4328 | _("Invalid regexp")); | |
4329 | } | |
4330 | ||
4331 | print_info_sources_header | |
4332 | (_("Source files for which symbols have been read in:\n"), &data); | |
4333 | ||
2030c079 | 4334 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4335 | { |
b669c953 | 4336 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4337 | { |
4338 | for (symtab *s : compunit_filetabs (cu)) | |
4339 | { | |
4340 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4341 | |
8b31193a TT |
4342 | output_source_filename (fullname, &data); |
4343 | } | |
4344 | } | |
4345 | } | |
c906108c | 4346 | printf_filtered ("\n\n"); |
c5aa993b | 4347 | |
28cd9371 PW |
4348 | print_info_sources_header |
4349 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4350 | |
bbf2f4df | 4351 | filenames_seen.clear (); |
9fdc877b | 4352 | data.first = 1; |
bb4142cf DE |
4353 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4354 | 1 /*need_fullname*/); | |
c906108c SS |
4355 | printf_filtered ("\n"); |
4356 | } | |
4357 | ||
fbd9ab74 JK |
4358 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4359 | non-zero compare only lbasename of FILES. */ | |
4360 | ||
c906108c | 4361 | static int |
96142726 | 4362 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4363 | { |
4364 | int i; | |
4365 | ||
4366 | if (file != NULL && nfiles != 0) | |
4367 | { | |
4368 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4369 | { |
fbd9ab74 JK |
4370 | if (compare_filenames_for_search (file, (basenames |
4371 | ? lbasename (files[i]) | |
4372 | : files[i]))) | |
c5aa993b JM |
4373 | return 1; |
4374 | } | |
c906108c SS |
4375 | } |
4376 | else if (nfiles == 0) | |
4377 | return 1; | |
4378 | return 0; | |
4379 | } | |
4380 | ||
b52109bc | 4381 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4382 | sort symbols, not minimal symbols. */ |
eca864fe | 4383 | |
b9c04fb2 TT |
4384 | int |
4385 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4386 | const symbol_search &sym_b) | |
434d2d4f | 4387 | { |
b52109bc DE |
4388 | int c; |
4389 | ||
b9c04fb2 TT |
4390 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4391 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4392 | if (c != 0) |
4393 | return c; | |
434d2d4f | 4394 | |
b9c04fb2 TT |
4395 | if (sym_a.block != sym_b.block) |
4396 | return sym_a.block - sym_b.block; | |
b52109bc | 4397 | |
b9c04fb2 TT |
4398 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4399 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4400 | } |
4401 | ||
12615cba PW |
4402 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4403 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4404 | ||
4405 | bool | |
4406 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4407 | const struct symbol *sym) | |
4408 | { | |
4409 | struct type *sym_type; | |
4410 | std::string printed_sym_type_name; | |
4411 | ||
4412 | if (symbol_lookup_debug > 1) | |
4413 | { | |
4414 | fprintf_unfiltered (gdb_stdlog, | |
4415 | "treg_matches_sym_type_name\n sym %s\n", | |
4416 | SYMBOL_NATURAL_NAME (sym)); | |
4417 | } | |
4418 | ||
4419 | sym_type = SYMBOL_TYPE (sym); | |
4420 | if (sym_type == NULL) | |
4421 | return false; | |
4422 | ||
43d397ca PW |
4423 | { |
4424 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4425 | |
12615cba | 4426 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4427 | } |
4428 | ||
12615cba PW |
4429 | |
4430 | if (symbol_lookup_debug > 1) | |
4431 | { | |
4432 | fprintf_unfiltered (gdb_stdlog, | |
4433 | " sym_type_name %s\n", | |
4434 | printed_sym_type_name.c_str ()); | |
4435 | } | |
4436 | ||
4437 | ||
4438 | if (printed_sym_type_name.empty ()) | |
4439 | return false; | |
4440 | ||
4441 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4442 | } | |
4443 | ||
4444 | ||
b9c04fb2 | 4445 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4446 | |
4447 | static void | |
b9c04fb2 | 4448 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4449 | { |
b9c04fb2 TT |
4450 | std::sort (result->begin (), result->end ()); |
4451 | result->erase (std::unique (result->begin (), result->end ()), | |
4452 | result->end ()); | |
434d2d4f | 4453 | } |
5bd98722 | 4454 | |
c906108c | 4455 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4456 | returning the results. |
c906108c SS |
4457 | |
4458 | Only symbols of KIND are searched: | |
e8930875 | 4459 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4460 | and constants (enums). |
4461 | if T_REGEXP is not NULL, only returns var that have | |
4462 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4463 | FUNCTIONS_DOMAIN - search all functions |
4464 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4465 | ALL_DOMAIN - an internal error for this function |
c906108c | 4466 | |
b52109bc DE |
4467 | Within each file the results are sorted locally; each symtab's global and |
4468 | static blocks are separately alphabetized. | |
4469 | Duplicate entries are removed. */ | |
c378eb4e | 4470 | |
b9c04fb2 | 4471 | std::vector<symbol_search> |
96142726 | 4472 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4473 | const char *t_regexp, |
b9c04fb2 | 4474 | int nfiles, const char *files[]) |
c906108c | 4475 | { |
346d1dfe | 4476 | const struct blockvector *bv; |
582942f4 | 4477 | const struct block *b; |
52f0bd74 | 4478 | int i = 0; |
8157b174 | 4479 | struct block_iterator iter; |
52f0bd74 | 4480 | struct symbol *sym; |
c906108c | 4481 | int found_misc = 0; |
bc043ef3 | 4482 | static const enum minimal_symbol_type types[] |
eb86c5e2 | 4483 | = {mst_data, mst_text, mst_unknown}; |
bc043ef3 | 4484 | static const enum minimal_symbol_type types2[] |
eb86c5e2 | 4485 | = {mst_bss, mst_file_text, mst_unknown}; |
bc043ef3 | 4486 | static const enum minimal_symbol_type types3[] |
eb86c5e2 | 4487 | = {mst_file_data, mst_solib_trampoline, mst_unknown}; |
bc043ef3 | 4488 | static const enum minimal_symbol_type types4[] |
eb86c5e2 | 4489 | = {mst_file_bss, mst_text_gnu_ifunc, mst_unknown}; |
c906108c SS |
4490 | enum minimal_symbol_type ourtype; |
4491 | enum minimal_symbol_type ourtype2; | |
4492 | enum minimal_symbol_type ourtype3; | |
4493 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4494 | std::vector<symbol_search> result; |
2d7cc5c7 | 4495 | gdb::optional<compiled_regex> preg; |
12615cba | 4496 | gdb::optional<compiled_regex> treg; |
c906108c | 4497 | |
e8930875 JK |
4498 | gdb_assert (kind <= TYPES_DOMAIN); |
4499 | ||
8903c50d TT |
4500 | ourtype = types[kind]; |
4501 | ourtype2 = types2[kind]; | |
4502 | ourtype3 = types3[kind]; | |
4503 | ourtype4 = types4[kind]; | |
c906108c | 4504 | |
c906108c SS |
4505 | if (regexp != NULL) |
4506 | { | |
4507 | /* Make sure spacing is right for C++ operators. | |
4508 | This is just a courtesy to make the matching less sensitive | |
4509 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4510 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4511 | const char *opend; |
4512 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4513 | |
c906108c | 4514 | if (*opname) |
c5aa993b | 4515 | { |
3e43a32a MS |
4516 | int fix = -1; /* -1 means ok; otherwise number of |
4517 | spaces needed. */ | |
433759f7 | 4518 | |
c5aa993b JM |
4519 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4520 | { | |
c378eb4e | 4521 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4522 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4523 | fix = 1; | |
4524 | } | |
4525 | else | |
4526 | { | |
c378eb4e | 4527 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4528 | if (opname[-1] == ' ') |
4529 | fix = 0; | |
4530 | } | |
c378eb4e | 4531 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4532 | if (fix >= 0) |
4533 | { | |
045f55a6 | 4534 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4535 | |
c5aa993b JM |
4536 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4537 | regexp = tmp; | |
4538 | } | |
4539 | } | |
4540 | ||
2d7cc5c7 PA |
4541 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4542 | ? REG_ICASE : 0); | |
4543 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4544 | } |
4545 | ||
12615cba PW |
4546 | if (t_regexp != NULL) |
4547 | { | |
4548 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4549 | ? REG_ICASE : 0); | |
4550 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4551 | } | |
4552 | ||
c906108c SS |
4553 | /* Search through the partial symtabs *first* for all symbols |
4554 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4555 | the machinery below. */ |
14bc53a8 PA |
4556 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4557 | { | |
4558 | return file_matches (filename, files, nfiles, | |
4559 | basenames); | |
4560 | }, | |
b5ec771e | 4561 | lookup_name_info::match_any (), |
14bc53a8 PA |
4562 | [&] (const char *symname) |
4563 | { | |
12615cba PW |
4564 | return (!preg.has_value () |
4565 | || preg->exec (symname, | |
4566 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4567 | }, |
4568 | NULL, | |
4569 | kind); | |
c906108c SS |
4570 | |
4571 | /* Here, we search through the minimal symbol tables for functions | |
4572 | and variables that match, and force their symbols to be read. | |
4573 | This is in particular necessary for demangled variable names, | |
4574 | which are no longer put into the partial symbol tables. | |
4575 | The symbol will then be found during the scan of symtabs below. | |
4576 | ||
4577 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4578 | for the function, for variables we have to call |
4579 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4580 | has debug info. | |
c906108c | 4581 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4582 | any matching symbols without debug info. |
4583 | We only search the objfile the msymbol came from, we no longer search | |
4584 | all objfiles. In large programs (1000s of shared libs) searching all | |
4585 | objfiles is not worth the pain. */ | |
c906108c | 4586 | |
176620f1 | 4587 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4588 | { |
2030c079 | 4589 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4590 | { |
7932255d | 4591 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4592 | { |
4593 | QUIT; | |
89295b4d | 4594 | |
5325b9bf TT |
4595 | if (msymbol->created_by_gdb) |
4596 | continue; | |
422d65e7 | 4597 | |
5325b9bf TT |
4598 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4599 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4600 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4601 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4602 | { | |
4603 | if (!preg.has_value () | |
4604 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4605 | NULL, 0) == 0) | |
4606 | { | |
4607 | /* Note: An important side-effect of these | |
4608 | lookup functions is to expand the symbol | |
4609 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4610 | the next loop on compunits. */ |
5325b9bf TT |
4611 | if (kind == FUNCTIONS_DOMAIN |
4612 | ? (find_pc_compunit_symtab | |
4613 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4614 | == NULL) | |
4615 | : (lookup_symbol_in_objfile_from_linkage_name | |
4616 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4617 | VAR_DOMAIN) | |
4618 | .symbol == NULL)) | |
4619 | found_misc = 1; | |
4620 | } | |
4621 | } | |
4622 | } | |
4623 | } | |
c906108c SS |
4624 | } |
4625 | ||
2030c079 | 4626 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4627 | { |
b669c953 | 4628 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4629 | { |
4630 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4631 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4632 | { | |
4633 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4634 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4635 | { | |
4636 | struct symtab *real_symtab = symbol_symtab (sym); | |
4637 | ||
4638 | QUIT; | |
4639 | ||
4640 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4641 | not need to be a substring of symtab_to_fullname as | |
4642 | it may contain "./" etc. */ | |
4643 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4644 | || ((basenames_may_differ | |
4645 | || file_matches (lbasename (real_symtab->filename), | |
4646 | files, nfiles, 1)) | |
4647 | && file_matches (symtab_to_fullname (real_symtab), | |
4648 | files, nfiles, 0))) | |
4649 | && ((!preg.has_value () | |
4650 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4651 | NULL, 0) == 0) | |
4652 | && ((kind == VARIABLES_DOMAIN | |
4653 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4654 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4655 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4656 | /* LOC_CONST can be used for more than | |
4657 | just enums, e.g., c++ static const | |
4658 | members. We only want to skip enums | |
4659 | here. */ | |
4660 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4661 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4662 | == TYPE_CODE_ENUM)) | |
4663 | && (!treg.has_value () | |
4664 | || treg_matches_sym_type_name (*treg, sym))) | |
4665 | || (kind == FUNCTIONS_DOMAIN | |
4666 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4667 | && (!treg.has_value () | |
4668 | || treg_matches_sym_type_name (*treg, | |
4669 | sym))) | |
4670 | || (kind == TYPES_DOMAIN | |
4671 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4672 | { | |
4673 | /* match */ | |
4674 | result.emplace_back (i, sym); | |
4675 | } | |
4676 | } | |
4677 | } | |
4678 | } | |
4679 | } | |
c906108c | 4680 | |
b9c04fb2 TT |
4681 | if (!result.empty ()) |
4682 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4683 | |
c906108c | 4684 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4685 | no debug symbols, then add matching minsyms. But if the user wants |
4686 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4687 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4688 | |
a8462bbf PW |
4689 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4690 | && !treg.has_value ()) | |
c906108c | 4691 | { |
2030c079 | 4692 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4693 | { |
7932255d | 4694 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4695 | { |
4696 | QUIT; | |
89295b4d | 4697 | |
5325b9bf TT |
4698 | if (msymbol->created_by_gdb) |
4699 | continue; | |
422d65e7 | 4700 | |
5325b9bf TT |
4701 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4702 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4703 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4704 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4705 | { | |
4706 | if (!preg.has_value () | |
4707 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4708 | NULL, 0) == 0) | |
4709 | { | |
4710 | /* For functions we can do a quick check of whether the | |
4711 | symbol might be found via find_pc_symtab. */ | |
4712 | if (kind != FUNCTIONS_DOMAIN | |
4713 | || (find_pc_compunit_symtab | |
4714 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4715 | == NULL)) | |
4716 | { | |
4717 | if (lookup_symbol_in_objfile_from_linkage_name | |
4718 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4719 | VAR_DOMAIN) | |
4720 | .symbol == NULL) | |
4721 | { | |
4722 | /* match */ | |
4723 | result.emplace_back (i, msymbol, objfile); | |
4724 | } | |
4725 | } | |
4726 | } | |
4727 | } | |
4728 | } | |
4729 | } | |
c906108c SS |
4730 | } |
4731 | ||
b9c04fb2 | 4732 | return result; |
c906108c SS |
4733 | } |
4734 | ||
4735 | /* Helper function for symtab_symbol_info, this function uses | |
4736 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4737 | regarding the match to gdb_stdout. If LAST is not NULL, |
4738 | print file and line number information for the symbol as | |
4739 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4740 | |
c906108c | 4741 | static void |
8903c50d | 4742 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4743 | struct symbol *sym, |
05cba821 | 4744 | int block, const char *last) |
c906108c | 4745 | { |
43d397ca | 4746 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4747 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4748 | |
c7dcbf88 | 4749 | if (last != NULL) |
c906108c | 4750 | { |
c7dcbf88 | 4751 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4752 | |
c7dcbf88 AA |
4753 | if (filename_cmp (last, s_filename) != 0) |
4754 | { | |
4755 | fputs_filtered ("\nFile ", gdb_stdout); | |
1ed9f74e | 4756 | fputs_styled (s_filename, file_name_style.style (), gdb_stdout); |
c7dcbf88 AA |
4757 | fputs_filtered (":\n", gdb_stdout); |
4758 | } | |
4759 | ||
4760 | if (SYMBOL_LINE (sym) != 0) | |
4761 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4762 | else | |
4763 | puts_filtered ("\t"); | |
4764 | } | |
b744723f | 4765 | |
176620f1 | 4766 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4767 | printf_filtered ("static "); |
c5aa993b | 4768 | |
c378eb4e | 4769 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4770 | if (kind == TYPES_DOMAIN |
4771 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 AB |
4772 | { |
4773 | /* FIXME: For C (and C++) we end up with a difference in output here | |
4774 | between how a typedef is printed, and non-typedefs are printed. | |
4775 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4776 | appear C-like, while TYPE_PRINT doesn't. | |
4777 | ||
4778 | For the struct printing case below, things are worse, we force | |
4779 | printing of the ";" in this function, which is going to be wrong | |
4780 | for languages that don't require a ";" between statements. */ | |
4781 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_TYPEDEF) | |
4782 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); | |
4783 | else | |
4784 | { | |
4785 | type_print (SYMBOL_TYPE (sym), "", gdb_stdout, -1); | |
4786 | printf_filtered ("\n"); | |
4787 | } | |
4788 | } | |
c378eb4e | 4789 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4790 | else if (kind < TYPES_DOMAIN |
4791 | || (kind == TYPES_DOMAIN | |
4792 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4793 | { |
4794 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4795 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4796 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4797 | gdb_stdout, 0); |
c906108c SS |
4798 | |
4799 | printf_filtered (";\n"); | |
4800 | } | |
c906108c SS |
4801 | } |
4802 | ||
4803 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4804 | for non-debugging symbols to gdb_stdout. */ |
4805 | ||
c906108c | 4806 | static void |
7c7b6655 | 4807 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4808 | { |
7c7b6655 | 4809 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4810 | char *tmp; |
4811 | ||
d80b854b | 4812 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4813 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4814 | & (CORE_ADDR) 0xffffffff, |
4815 | 8); | |
3ac4495a | 4816 | else |
77e371c0 | 4817 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4818 | 16); |
1ed9f74e PW |
4819 | fputs_styled (tmp, address_style.style (), gdb_stdout); |
4820 | fputs_filtered (" ", gdb_stdout); | |
4821 | if (msymbol.minsym->text_p ()) | |
4822 | fputs_styled (MSYMBOL_PRINT_NAME (msymbol.minsym), | |
4823 | function_name_style.style (), | |
4824 | gdb_stdout); | |
4825 | else | |
4826 | fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), gdb_stdout); | |
4827 | fputs_filtered ("\n", gdb_stdout); | |
c906108c SS |
4828 | } |
4829 | ||
4830 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4831 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4832 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4833 | matches. */ |
4834 | ||
c906108c | 4835 | static void |
12615cba PW |
4836 | symtab_symbol_info (bool quiet, |
4837 | const char *regexp, enum search_domain kind, | |
4838 | const char *t_regexp, int from_tty) | |
c906108c | 4839 | { |
bc043ef3 | 4840 | static const char * const classnames[] = |
e8930875 | 4841 | {"variable", "function", "type"}; |
c7dcbf88 | 4842 | const char *last_filename = ""; |
c906108c SS |
4843 | int first = 1; |
4844 | ||
e8930875 JK |
4845 | gdb_assert (kind <= TYPES_DOMAIN); |
4846 | ||
b16507e0 AB |
4847 | if (regexp != nullptr && *regexp == '\0') |
4848 | regexp = nullptr; | |
4849 | ||
c378eb4e | 4850 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba PW |
4851 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4852 | t_regexp, 0, NULL); | |
c906108c | 4853 | |
12615cba PW |
4854 | if (!quiet) |
4855 | { | |
4856 | if (regexp != NULL) | |
4857 | { | |
4858 | if (t_regexp != NULL) | |
4859 | printf_filtered | |
4860 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 4861 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
4862 | classnames[kind], regexp, t_regexp); |
4863 | else | |
4864 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4865 | classnames[kind], regexp); | |
4866 | } | |
4867 | else | |
4868 | { | |
4869 | if (t_regexp != NULL) | |
4870 | printf_filtered | |
4871 | (_("All defined %ss" | |
0c95f9ed | 4872 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
4873 | classnames[kind], t_regexp); |
4874 | else | |
4875 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4876 | } | |
4877 | } | |
c906108c | 4878 | |
b9c04fb2 | 4879 | for (const symbol_search &p : symbols) |
c906108c SS |
4880 | { |
4881 | QUIT; | |
4882 | ||
b9c04fb2 | 4883 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4884 | { |
4885 | if (first) | |
4886 | { | |
12615cba PW |
4887 | if (!quiet) |
4888 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4889 | first = 0; |
4890 | } | |
b9c04fb2 | 4891 | print_msymbol_info (p.msymbol); |
c5aa993b | 4892 | } |
c906108c | 4893 | else |
c5aa993b JM |
4894 | { |
4895 | print_symbol_info (kind, | |
b9c04fb2 TT |
4896 | p.symbol, |
4897 | p.block, | |
c5aa993b | 4898 | last_filename); |
d01060f0 | 4899 | last_filename |
b9c04fb2 | 4900 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4901 | } |
c906108c | 4902 | } |
c906108c SS |
4903 | } |
4904 | ||
b16507e0 AB |
4905 | /* Implement the 'info variables' command. */ |
4906 | ||
0b39b52e | 4907 | static void |
12615cba | 4908 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4909 | { |
b16507e0 AB |
4910 | info_print_options opts; |
4911 | extract_info_print_options (&opts, &args); | |
4912 | ||
4913 | symtab_symbol_info (opts.quiet, args, VARIABLES_DOMAIN, | |
4914 | opts.type_regexp, from_tty); | |
0b39b52e TT |
4915 | } |
4916 | ||
b16507e0 | 4917 | /* Implement the 'info functions' command. */ |
12615cba | 4918 | |
c906108c | 4919 | static void |
12615cba | 4920 | info_functions_command (const char *args, int from_tty) |
c906108c | 4921 | { |
b16507e0 AB |
4922 | info_print_options opts; |
4923 | extract_info_print_options (&opts, &args); | |
4924 | ||
4925 | symtab_symbol_info (opts.quiet, args, FUNCTIONS_DOMAIN, | |
4926 | opts.type_regexp, from_tty); | |
c906108c SS |
4927 | } |
4928 | ||
a8eab7c6 AB |
4929 | /* Holds the -q option for the 'info types' command. */ |
4930 | ||
4931 | struct info_types_options | |
4932 | { | |
4933 | int quiet = false; | |
4934 | }; | |
4935 | ||
4936 | /* The options used by the 'info types' command. */ | |
4937 | ||
4938 | static const gdb::option::option_def info_types_options_defs[] = { | |
4939 | gdb::option::boolean_option_def<info_types_options> { | |
4940 | "q", | |
4941 | [] (info_types_options *opt) { return &opt->quiet; }, | |
4942 | nullptr, /* show_cmd_cb */ | |
4943 | nullptr /* set_doc */ | |
4944 | } | |
4945 | }; | |
4946 | ||
4947 | /* Returns the option group used by 'info types'. */ | |
4948 | ||
4949 | static gdb::option::option_def_group | |
4950 | make_info_types_options_def_group (info_types_options *opts) | |
4951 | { | |
4952 | return {{info_types_options_defs}, opts}; | |
4953 | } | |
4954 | ||
4955 | /* Implement the 'info types' command. */ | |
357e46e7 | 4956 | |
c906108c | 4957 | static void |
a8eab7c6 | 4958 | info_types_command (const char *args, int from_tty) |
c906108c | 4959 | { |
a8eab7c6 AB |
4960 | info_types_options opts; |
4961 | ||
4962 | auto grp = make_info_types_options_def_group (&opts); | |
4963 | gdb::option::process_options | |
4964 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4965 | if (args != nullptr && *args == '\0') | |
4966 | args = nullptr; | |
4967 | symtab_symbol_info (opts.quiet, args, TYPES_DOMAIN, NULL, from_tty); | |
4968 | } | |
4969 | ||
4970 | /* Command completer for 'info types' command. */ | |
4971 | ||
4972 | static void | |
4973 | info_types_command_completer (struct cmd_list_element *ignore, | |
4974 | completion_tracker &tracker, | |
4975 | const char *text, const char * /* word */) | |
4976 | { | |
4977 | const auto group | |
4978 | = make_info_types_options_def_group (nullptr); | |
4979 | if (gdb::option::complete_options | |
4980 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4981 | return; | |
4982 | ||
4983 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
4984 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
4985 | } |
4986 | ||
c378eb4e | 4987 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4988 | |
8b93c638 | 4989 | void |
fba45db2 | 4990 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4991 | { |
4992 | rbreak_command (regexp, from_tty); | |
4993 | } | |
8926118c | 4994 | |
c906108c | 4995 | static void |
0b39b52e | 4996 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 4997 | { |
c80049d3 | 4998 | std::string string; |
96142726 TT |
4999 | const char **files = NULL; |
5000 | const char *file_name; | |
8bd10a10 | 5001 | int nfiles = 0; |
c906108c | 5002 | |
8bd10a10 CM |
5003 | if (regexp) |
5004 | { | |
0b39b52e | 5005 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5006 | |
8bd10a10 CM |
5007 | if (colon && *(colon + 1) != ':') |
5008 | { | |
5009 | int colon_index; | |
96142726 | 5010 | char *local_name; |
8bd10a10 CM |
5011 | |
5012 | colon_index = colon - regexp; | |
224c3ddb | 5013 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5014 | memcpy (local_name, regexp, colon_index); |
5015 | local_name[colon_index--] = 0; | |
5016 | while (isspace (local_name[colon_index])) | |
5017 | local_name[colon_index--] = 0; | |
5018 | file_name = local_name; | |
8bd10a10 CM |
5019 | files = &file_name; |
5020 | nfiles = 1; | |
529480d0 | 5021 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5022 | } |
5023 | } | |
5024 | ||
b9c04fb2 TT |
5025 | std::vector<symbol_search> symbols = search_symbols (regexp, |
5026 | FUNCTIONS_DOMAIN, | |
12615cba | 5027 | NULL, |
b9c04fb2 | 5028 | nfiles, files); |
c906108c | 5029 | |
c80049d3 | 5030 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5031 | for (const symbol_search &p : symbols) |
c906108c | 5032 | { |
b9c04fb2 | 5033 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5034 | { |
b9c04fb2 | 5035 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5036 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5037 | |
c80049d3 TT |
5038 | string = string_printf ("%s:'%s'", fullname, |
5039 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
5040 | break_command (&string[0], from_tty); | |
c7dcbf88 | 5041 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5042 | } |
c906108c | 5043 | else |
c5aa993b | 5044 | { |
c80049d3 TT |
5045 | string = string_printf ("'%s'", |
5046 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 5047 | |
c80049d3 | 5048 | break_command (&string[0], from_tty); |
c5aa993b | 5049 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 5050 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 5051 | } |
c906108c | 5052 | } |
c906108c | 5053 | } |
c906108c | 5054 | \f |
c5aa993b | 5055 | |
c62446b1 | 5056 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5057 | |
5058 | static int | |
c62446b1 | 5059 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5060 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5061 | completion_match_result &match_res) |
5062 | { | |
d4c2a405 | 5063 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5064 | |
b5ec771e | 5065 | symbol_name_matcher_ftype *name_match |
618daa93 | 5066 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 5067 | |
a207cff2 | 5068 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5069 | } |
5070 | ||
b5ec771e | 5071 | /* See symtab.h. */ |
c906108c | 5072 | |
b5ec771e | 5073 | void |
eb3ff9a5 | 5074 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5075 | language symbol_language, |
eb3ff9a5 | 5076 | const char *symname, |
b5ec771e | 5077 | const lookup_name_info &lookup_name, |
0d5cff50 | 5078 | const char *text, const char *word) |
c906108c | 5079 | { |
b5ec771e PA |
5080 | completion_match_result &match_res |
5081 | = tracker.reset_completion_match_result (); | |
5082 | ||
c378eb4e | 5083 | /* Clip symbols that cannot match. */ |
c62446b1 | 5084 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 5085 | return; |
c906108c | 5086 | |
b5ec771e PA |
5087 | /* Refresh SYMNAME from the match string. It's potentially |
5088 | different depending on language. (E.g., on Ada, the match may be | |
5089 | the encoded symbol name wrapped in "<>"). */ | |
5090 | symname = match_res.match.match (); | |
5091 | gdb_assert (symname != NULL); | |
5092 | ||
c906108c | 5093 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5094 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5095 | |
5096 | { | |
60a20c19 PA |
5097 | gdb::unique_xmalloc_ptr<char> completion |
5098 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5099 | |
a207cff2 PA |
5100 | /* Here we pass the match-for-lcd object to add_completion. Some |
5101 | languages match the user text against substrings of symbol | |
5102 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5103 | "std::vector::push_back", "std::string::push_back", etc., and | |
5104 | in this case we want the completion lowest common denominator | |
5105 | to be "push_back" instead of "std::". */ | |
5106 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5107 | &match_res.match_for_lcd, text, word); |
c906108c SS |
5108 | } |
5109 | } | |
5110 | ||
6da67eb1 PA |
5111 | /* completion_list_add_name wrapper for struct symbol. */ |
5112 | ||
5113 | static void | |
eb3ff9a5 PA |
5114 | completion_list_add_symbol (completion_tracker &tracker, |
5115 | symbol *sym, | |
b5ec771e | 5116 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5117 | const char *text, const char *word) |
5118 | { | |
b5ec771e PA |
5119 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5120 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5121 | lookup_name, text, word); |
6da67eb1 PA |
5122 | } |
5123 | ||
5124 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5125 | ||
5126 | static void | |
eb3ff9a5 PA |
5127 | completion_list_add_msymbol (completion_tracker &tracker, |
5128 | minimal_symbol *sym, | |
b5ec771e | 5129 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5130 | const char *text, const char *word) |
5131 | { | |
b5ec771e PA |
5132 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
5133 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5134 | lookup_name, text, word); |
6da67eb1 PA |
5135 | } |
5136 | ||
b5ec771e | 5137 | |
69636828 AF |
5138 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5139 | again and feed all the selectors into the mill. */ | |
5140 | ||
5141 | static void | |
eb3ff9a5 PA |
5142 | completion_list_objc_symbol (completion_tracker &tracker, |
5143 | struct minimal_symbol *msymbol, | |
b5ec771e | 5144 | const lookup_name_info &lookup_name, |
0d5cff50 | 5145 | const char *text, const char *word) |
69636828 AF |
5146 | { |
5147 | static char *tmp = NULL; | |
5148 | static unsigned int tmplen = 0; | |
9af17804 | 5149 | |
0d5cff50 | 5150 | const char *method, *category, *selector; |
69636828 | 5151 | char *tmp2 = NULL; |
9af17804 | 5152 | |
efd66ac6 | 5153 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
5154 | |
5155 | /* Is it a method? */ | |
5156 | if ((method[0] != '-') && (method[0] != '+')) | |
5157 | return; | |
5158 | ||
1b026119 | 5159 | if (text[0] == '[') |
69636828 | 5160 | /* Complete on shortened method method. */ |
b5ec771e PA |
5161 | completion_list_add_name (tracker, language_objc, |
5162 | method + 1, | |
5163 | lookup_name, | |
1b026119 | 5164 | text, word); |
9af17804 | 5165 | |
69636828 AF |
5166 | while ((strlen (method) + 1) >= tmplen) |
5167 | { | |
5168 | if (tmplen == 0) | |
5169 | tmplen = 1024; | |
5170 | else | |
5171 | tmplen *= 2; | |
224c3ddb | 5172 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5173 | } |
5174 | selector = strchr (method, ' '); | |
5175 | if (selector != NULL) | |
5176 | selector++; | |
9af17804 | 5177 | |
69636828 | 5178 | category = strchr (method, '('); |
9af17804 | 5179 | |
69636828 AF |
5180 | if ((category != NULL) && (selector != NULL)) |
5181 | { | |
5182 | memcpy (tmp, method, (category - method)); | |
5183 | tmp[category - method] = ' '; | |
5184 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5185 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5186 | lookup_name, text, word); |
5187 | if (text[0] == '[') | |
b5ec771e | 5188 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5189 | lookup_name, text, word); |
69636828 | 5190 | } |
9af17804 | 5191 | |
69636828 AF |
5192 | if (selector != NULL) |
5193 | { | |
5194 | /* Complete on selector only. */ | |
5195 | strcpy (tmp, selector); | |
5196 | tmp2 = strchr (tmp, ']'); | |
5197 | if (tmp2 != NULL) | |
5198 | *tmp2 = '\0'; | |
9af17804 | 5199 | |
b5ec771e | 5200 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5201 | lookup_name, text, word); |
69636828 AF |
5202 | } |
5203 | } | |
5204 | ||
5205 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5206 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5207 | |
6f937416 PA |
5208 | static const char * |
5209 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5210 | { |
5211 | for (; p > text; --p) | |
5212 | { | |
5213 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5214 | continue; | |
5215 | else | |
5216 | { | |
5217 | if ((current_language->la_language == language_objc)) | |
5218 | { | |
c378eb4e | 5219 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5220 | continue; |
5221 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5222 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5223 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5224 | { /* Might be part of a method name. */ |
6f937416 | 5225 | const char *t = p; |
69636828 AF |
5226 | |
5227 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5228 | that we are in the middle of a method name. However, | |
5229 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5230 | Unfortunately we have to find it now to decide. */ | |
5231 | ||
5232 | while (t > text) | |
5233 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5234 | t[-1] == ' ' || t[-1] == ':' || | |
5235 | t[-1] == '(' || t[-1] == ')') | |
5236 | --t; | |
5237 | else | |
5238 | break; | |
5239 | ||
5240 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5241 | p = t - 2; /* Method name detected. */ |
5242 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5243 | } |
5244 | } | |
5245 | break; | |
5246 | } | |
5247 | } | |
5248 | return p; | |
5249 | } | |
5250 | ||
edb3359d | 5251 | static void |
eb3ff9a5 PA |
5252 | completion_list_add_fields (completion_tracker &tracker, |
5253 | struct symbol *sym, | |
b5ec771e | 5254 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5255 | const char *text, const char *word) |
edb3359d DJ |
5256 | { |
5257 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5258 | { | |
5259 | struct type *t = SYMBOL_TYPE (sym); | |
5260 | enum type_code c = TYPE_CODE (t); | |
5261 | int j; | |
5262 | ||
5263 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5264 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5265 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5266 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5267 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5268 | lookup_name, text, word); |
edb3359d DJ |
5269 | } |
5270 | } | |
5271 | ||
f9d67a22 PA |
5272 | /* See symtab.h. */ |
5273 | ||
5274 | bool | |
5275 | symbol_is_function_or_method (symbol *sym) | |
5276 | { | |
5277 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5278 | { | |
5279 | case TYPE_CODE_FUNC: | |
5280 | case TYPE_CODE_METHOD: | |
5281 | return true; | |
5282 | default: | |
5283 | return false; | |
5284 | } | |
5285 | } | |
5286 | ||
5287 | /* See symtab.h. */ | |
5288 | ||
5289 | bool | |
5290 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5291 | { | |
5292 | switch (MSYMBOL_TYPE (msymbol)) | |
5293 | { | |
5294 | case mst_text: | |
5295 | case mst_text_gnu_ifunc: | |
5296 | case mst_solib_trampoline: | |
5297 | case mst_file_text: | |
5298 | return true; | |
5299 | default: | |
5300 | return false; | |
5301 | } | |
5302 | } | |
5303 | ||
ca31ab1d PA |
5304 | /* See symtab.h. */ |
5305 | ||
5306 | bound_minimal_symbol | |
5307 | find_gnu_ifunc (const symbol *sym) | |
5308 | { | |
5309 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5310 | return {}; | |
5311 | ||
5312 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5313 | symbol_name_match_type::SEARCH_NAME); | |
5314 | struct objfile *objfile = symbol_objfile (sym); | |
5315 | ||
2b1ffcfd | 5316 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5317 | minimal_symbol *ifunc = NULL; |
5318 | ||
5319 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5320 | [&] (minimal_symbol *minsym) | |
5321 | { | |
5322 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5323 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5324 | { |
f50776aa PA |
5325 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5326 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5327 | { | |
5328 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5329 | msym_addr |
5330 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5331 | msym_addr, | |
5332 | current_top_target ()); | |
f50776aa PA |
5333 | } |
5334 | if (msym_addr == address) | |
5335 | { | |
5336 | ifunc = minsym; | |
5337 | return true; | |
5338 | } | |
ca31ab1d PA |
5339 | } |
5340 | return false; | |
5341 | }); | |
5342 | ||
5343 | if (ifunc != NULL) | |
5344 | return {ifunc, objfile}; | |
5345 | return {}; | |
5346 | } | |
5347 | ||
e11c72c7 GB |
5348 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5349 | ||
5350 | static void | |
5351 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5352 | completion_tracker &tracker, |
f9d67a22 | 5353 | complete_symbol_mode mode, |
b5ec771e | 5354 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5355 | const char *text, const char *word, |
5356 | enum type_code code) | |
5357 | { | |
5358 | struct symbol *sym; | |
5359 | const struct block *b; | |
5360 | struct block_iterator iter; | |
5361 | int i; | |
5362 | ||
ff6fa247 GB |
5363 | if (cust == NULL) |
5364 | return; | |
5365 | ||
e11c72c7 GB |
5366 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5367 | { | |
5368 | QUIT; | |
5369 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5370 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5371 | { | |
f9d67a22 PA |
5372 | if (completion_skip_symbol (mode, sym)) |
5373 | continue; | |
5374 | ||
e11c72c7 GB |
5375 | if (code == TYPE_CODE_UNDEF |
5376 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5377 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5378 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5379 | lookup_name, |
e11c72c7 GB |
5380 | text, word); |
5381 | } | |
5382 | } | |
5383 | } | |
5384 | ||
eb3ff9a5 PA |
5385 | void |
5386 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5387 | (completion_tracker &tracker, complete_symbol_mode mode, |
5388 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5389 | const char *text, const char *word, |
5390 | const char *break_on, enum type_code code) | |
c906108c | 5391 | { |
41d27058 JB |
5392 | /* Problem: All of the symbols have to be copied because readline |
5393 | frees them. I'm not going to worry about this; hopefully there | |
5394 | won't be that many. */ | |
5395 | ||
de4f826b | 5396 | struct symbol *sym; |
3977b71f | 5397 | const struct block *b; |
edb3359d | 5398 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5399 | struct block_iterator iter; |
c906108c | 5400 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5401 | const char *sym_text; |
c906108c | 5402 | |
41d27058 | 5403 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5404 | if (mode == complete_symbol_mode::LINESPEC) |
5405 | sym_text = text; | |
5406 | else | |
c906108c | 5407 | { |
6f937416 | 5408 | const char *p; |
c906108c | 5409 | char quote_found; |
6f937416 | 5410 | const char *quote_pos = NULL; |
c906108c SS |
5411 | |
5412 | /* First see if this is a quoted string. */ | |
5413 | quote_found = '\0'; | |
5414 | for (p = text; *p != '\0'; ++p) | |
5415 | { | |
5416 | if (quote_found != '\0') | |
5417 | { | |
5418 | if (*p == quote_found) | |
5419 | /* Found close quote. */ | |
5420 | quote_found = '\0'; | |
5421 | else if (*p == '\\' && p[1] == quote_found) | |
5422 | /* A backslash followed by the quote character | |
c5aa993b | 5423 | doesn't end the string. */ |
c906108c SS |
5424 | ++p; |
5425 | } | |
5426 | else if (*p == '\'' || *p == '"') | |
5427 | { | |
5428 | quote_found = *p; | |
5429 | quote_pos = p; | |
5430 | } | |
5431 | } | |
5432 | if (quote_found == '\'') | |
5433 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5434 | sym_text = quote_pos + 1; | |
5435 | else if (quote_found == '"') | |
5436 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5437 | to complete it any other way. */ |
c94fdfd0 | 5438 | { |
ef0b411a | 5439 | return; |
c94fdfd0 | 5440 | } |
c906108c SS |
5441 | else |
5442 | { | |
5443 | /* It is not a quoted string. Break it based on the characters | |
5444 | which are in symbols. */ | |
5445 | while (p > text) | |
5446 | { | |
95699ff0 | 5447 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5448 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5449 | --p; |
5450 | else | |
5451 | break; | |
5452 | } | |
5453 | sym_text = p; | |
5454 | } | |
5455 | } | |
5456 | ||
1b026119 | 5457 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5458 | |
c906108c SS |
5459 | /* At this point scan through the misc symbol vectors and add each |
5460 | symbol you find to the list. Eventually we want to ignore | |
5461 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5462 | handled by the psymtab code below). */ |
c906108c | 5463 | |
2f68a895 TT |
5464 | if (code == TYPE_CODE_UNDEF) |
5465 | { | |
2030c079 | 5466 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5467 | { |
7932255d | 5468 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5469 | { |
5470 | QUIT; | |
9af17804 | 5471 | |
5325b9bf TT |
5472 | if (completion_skip_symbol (mode, msymbol)) |
5473 | continue; | |
f9d67a22 | 5474 | |
5325b9bf TT |
5475 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5476 | sym_text, word); | |
eb3ff9a5 | 5477 | |
5325b9bf TT |
5478 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5479 | sym_text, word); | |
5480 | } | |
2f68a895 TT |
5481 | } |
5482 | } | |
c906108c | 5483 | |
e11c72c7 | 5484 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5485 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5486 | { |
b669c953 | 5487 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5488 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5489 | sym_text, word, code); | |
5490 | } | |
e11c72c7 | 5491 | |
14bc53a8 PA |
5492 | /* Look through the partial symtabs for all symbols which begin by |
5493 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5494 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5495 | lookup_name, |
5496 | NULL, | |
14bc53a8 PA |
5497 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5498 | { | |
5499 | add_symtab_completions (symtab, | |
f9d67a22 | 5500 | tracker, mode, lookup_name, |
1b026119 | 5501 | sym_text, word, code); |
14bc53a8 PA |
5502 | }, |
5503 | ALL_DOMAIN); | |
e11c72c7 | 5504 | |
c906108c | 5505 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5506 | complete on local vars). Also catch fields of types defined in |
5507 | this places which match our text string. Only complete on types | |
c378eb4e | 5508 | visible from current context. */ |
edb3359d DJ |
5509 | |
5510 | b = get_selected_block (0); | |
5511 | surrounding_static_block = block_static_block (b); | |
5512 | surrounding_global_block = block_global_block (b); | |
5513 | if (surrounding_static_block != NULL) | |
5514 | while (b != surrounding_static_block) | |
5515 | { | |
5516 | QUIT; | |
c906108c | 5517 | |
edb3359d DJ |
5518 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5519 | { | |
2f68a895 TT |
5520 | if (code == TYPE_CODE_UNDEF) |
5521 | { | |
b5ec771e | 5522 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5523 | sym_text, word); |
b5ec771e | 5524 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5525 | sym_text, word); |
2f68a895 TT |
5526 | } |
5527 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5528 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5529 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5530 | sym_text, word); |
edb3359d | 5531 | } |
c5aa993b | 5532 | |
edb3359d DJ |
5533 | /* Stop when we encounter an enclosing function. Do not stop for |
5534 | non-inlined functions - the locals of the enclosing function | |
5535 | are in scope for a nested function. */ | |
5536 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5537 | break; | |
5538 | b = BLOCK_SUPERBLOCK (b); | |
5539 | } | |
c906108c | 5540 | |
edb3359d | 5541 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5542 | |
2f68a895 TT |
5543 | if (code == TYPE_CODE_UNDEF) |
5544 | { | |
5545 | if (surrounding_static_block != NULL) | |
5546 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5547 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5548 | sym_text, word); |
edb3359d | 5549 | |
2f68a895 TT |
5550 | if (surrounding_global_block != NULL) |
5551 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5552 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5553 | sym_text, word); |
2f68a895 | 5554 | } |
c906108c | 5555 | |
2f68a895 TT |
5556 | /* Skip macros if we are completing a struct tag -- arguable but |
5557 | usually what is expected. */ | |
5558 | if (current_language->la_macro_expansion == macro_expansion_c | |
5559 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5560 | { |
f6c2623e | 5561 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5562 | |
14bc53a8 PA |
5563 | /* This adds a macro's name to the current completion list. */ |
5564 | auto add_macro_name = [&] (const char *macro_name, | |
5565 | const macro_definition *, | |
5566 | macro_source_file *, | |
5567 | int) | |
5568 | { | |
1b026119 PA |
5569 | completion_list_add_name (tracker, language_c, macro_name, |
5570 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5571 | }; |
5572 | ||
9a044a89 TT |
5573 | /* Add any macros visible in the default scope. Note that this |
5574 | may yield the occasional wrong result, because an expression | |
5575 | might be evaluated in a scope other than the default. For | |
5576 | example, if the user types "break file:line if <TAB>", the | |
5577 | resulting expression will be evaluated at "file:line" -- but | |
5578 | at there does not seem to be a way to detect this at | |
5579 | completion time. */ | |
5580 | scope = default_macro_scope (); | |
5581 | if (scope) | |
f6c2623e TT |
5582 | macro_for_each_in_scope (scope->file, scope->line, |
5583 | add_macro_name); | |
9a044a89 TT |
5584 | |
5585 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5586 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5587 | } |
ef0b411a GB |
5588 | } |
5589 | ||
eb3ff9a5 PA |
5590 | void |
5591 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5592 | complete_symbol_mode mode, |
b5ec771e | 5593 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5594 | const char *text, const char *word, |
5595 | enum type_code code) | |
f55ee35c | 5596 | { |
c6756f62 | 5597 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5598 | name_match_type, |
eb3ff9a5 PA |
5599 | text, word, "", |
5600 | code); | |
f55ee35c JK |
5601 | } |
5602 | ||
eb3ff9a5 PA |
5603 | /* Collect all symbols (regardless of class) which begin by matching |
5604 | TEXT. */ | |
41d27058 | 5605 | |
eb3ff9a5 PA |
5606 | void |
5607 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5608 | complete_symbol_mode mode, |
b5ec771e | 5609 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5610 | const char *text, const char *word) |
41d27058 | 5611 | { |
c6756f62 | 5612 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5613 | name_match_type, |
eb3ff9a5 PA |
5614 | text, word, |
5615 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5616 | } |
5617 | ||
eb3ff9a5 PA |
5618 | /* Like collect_symbol_completion_matches, but only collect |
5619 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5620 | |
eb3ff9a5 PA |
5621 | void |
5622 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5623 | const char *text, const char *word, | |
5624 | enum type_code code) | |
2f68a895 | 5625 | { |
c6756f62 | 5626 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5627 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5628 | |
2f68a895 TT |
5629 | gdb_assert (code == TYPE_CODE_UNION |
5630 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5631 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5632 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5633 | name_match_type, |
eb3ff9a5 | 5634 | text, word, code); |
41d27058 JB |
5635 | } |
5636 | ||
eb3ff9a5 PA |
5637 | /* Like collect_symbol_completion_matches, but collects a list of |
5638 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5639 | |
eb3ff9a5 PA |
5640 | void |
5641 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5642 | complete_symbol_mode mode, |
b5ec771e | 5643 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5644 | const char *text, const char *word, |
5645 | const char *srcfile) | |
c94fdfd0 | 5646 | { |
c94fdfd0 | 5647 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5648 | const char *sym_text; |
c94fdfd0 EZ |
5649 | |
5650 | /* Now look for the symbol we are supposed to complete on. | |
5651 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5652 | if (mode == complete_symbol_mode::LINESPEC) |
5653 | sym_text = text; | |
5654 | else | |
c94fdfd0 | 5655 | { |
6f937416 | 5656 | const char *p; |
c94fdfd0 | 5657 | char quote_found; |
6f937416 | 5658 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5659 | |
5660 | /* First see if this is a quoted string. */ | |
5661 | quote_found = '\0'; | |
5662 | for (p = text; *p != '\0'; ++p) | |
5663 | { | |
5664 | if (quote_found != '\0') | |
5665 | { | |
5666 | if (*p == quote_found) | |
5667 | /* Found close quote. */ | |
5668 | quote_found = '\0'; | |
5669 | else if (*p == '\\' && p[1] == quote_found) | |
5670 | /* A backslash followed by the quote character | |
5671 | doesn't end the string. */ | |
5672 | ++p; | |
5673 | } | |
5674 | else if (*p == '\'' || *p == '"') | |
5675 | { | |
5676 | quote_found = *p; | |
5677 | quote_pos = p; | |
5678 | } | |
5679 | } | |
5680 | if (quote_found == '\'') | |
5681 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5682 | sym_text = quote_pos + 1; | |
5683 | else if (quote_found == '"') | |
5684 | /* A double-quoted string is never a symbol, nor does it make sense | |
5685 | to complete it any other way. */ | |
5686 | { | |
eb3ff9a5 | 5687 | return; |
c94fdfd0 EZ |
5688 | } |
5689 | else | |
5690 | { | |
69636828 AF |
5691 | /* Not a quoted string. */ |
5692 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5693 | } |
5694 | } | |
5695 | ||
1b026119 | 5696 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5697 | |
8f14146e PA |
5698 | /* Go through symtabs for SRCFILE and check the externs and statics |
5699 | for symbols which match. */ | |
5700 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5701 | { |
8f14146e | 5702 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5703 | tracker, mode, lookup_name, |
1b026119 | 5704 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5705 | return false; |
5706 | }); | |
e27852be DE |
5707 | } |
5708 | ||
c94fdfd0 EZ |
5709 | /* A helper function for make_source_files_completion_list. It adds |
5710 | another file name to a list of possible completions, growing the | |
5711 | list as necessary. */ | |
5712 | ||
5713 | static void | |
6f937416 | 5714 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5715 | completion_list *list) |
c94fdfd0 | 5716 | { |
60a20c19 | 5717 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5718 | } |
5719 | ||
5720 | static int | |
5721 | not_interesting_fname (const char *fname) | |
5722 | { | |
5723 | static const char *illegal_aliens[] = { | |
5724 | "_globals_", /* inserted by coff_symtab_read */ | |
5725 | NULL | |
5726 | }; | |
5727 | int i; | |
5728 | ||
5729 | for (i = 0; illegal_aliens[i]; i++) | |
5730 | { | |
0ba1096a | 5731 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5732 | return 1; |
5733 | } | |
5734 | return 0; | |
5735 | } | |
5736 | ||
ccefe4c4 TT |
5737 | /* An object of this type is passed as the user_data argument to |
5738 | map_partial_symbol_filenames. */ | |
5739 | struct add_partial_filename_data | |
5740 | { | |
9fdc877b | 5741 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5742 | const char *text; |
5743 | const char *word; | |
ccefe4c4 | 5744 | int text_len; |
eb3ff9a5 | 5745 | completion_list *list; |
ccefe4c4 TT |
5746 | }; |
5747 | ||
5748 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5749 | |
ccefe4c4 | 5750 | static void |
2837d59e | 5751 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5752 | void *user_data) |
5753 | { | |
19ba03f4 SM |
5754 | struct add_partial_filename_data *data |
5755 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5756 | |
5757 | if (not_interesting_fname (filename)) | |
5758 | return; | |
bbf2f4df | 5759 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5760 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5761 | { |
5762 | /* This file matches for a completion; add it to the | |
5763 | current list of matches. */ | |
49c4e619 | 5764 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5765 | } |
5766 | else | |
5767 | { | |
5768 | const char *base_name = lbasename (filename); | |
433759f7 | 5769 | |
ccefe4c4 | 5770 | if (base_name != filename |
bbf2f4df | 5771 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5772 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5773 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5774 | } |
5775 | } | |
5776 | ||
eb3ff9a5 | 5777 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5778 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5779 | program. */ |
c94fdfd0 | 5780 | |
eb3ff9a5 | 5781 | completion_list |
6f937416 | 5782 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5783 | { |
c94fdfd0 | 5784 | size_t text_len = strlen (text); |
eb3ff9a5 | 5785 | completion_list list; |
31889e00 | 5786 | const char *base_name; |
ccefe4c4 | 5787 | struct add_partial_filename_data datum; |
c94fdfd0 | 5788 | |
c94fdfd0 EZ |
5789 | if (!have_full_symbols () && !have_partial_symbols ()) |
5790 | return list; | |
5791 | ||
bbf2f4df | 5792 | filename_seen_cache filenames_seen; |
9fdc877b | 5793 | |
2030c079 | 5794 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5795 | { |
b669c953 | 5796 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5797 | { |
8b31193a TT |
5798 | for (symtab *s : compunit_filetabs (cu)) |
5799 | { | |
5800 | if (not_interesting_fname (s->filename)) | |
5801 | continue; | |
5802 | if (!filenames_seen.seen (s->filename) | |
5803 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5804 | { | |
5805 | /* This file matches for a completion; add it to the current | |
5806 | list of matches. */ | |
5807 | add_filename_to_list (s->filename, text, word, &list); | |
5808 | } | |
5809 | else | |
5810 | { | |
5811 | /* NOTE: We allow the user to type a base name when the | |
5812 | debug info records leading directories, but not the other | |
5813 | way around. This is what subroutines of breakpoint | |
5814 | command do when they parse file names. */ | |
5815 | base_name = lbasename (s->filename); | |
5816 | if (base_name != s->filename | |
5817 | && !filenames_seen.seen (base_name) | |
5818 | && filename_ncmp (base_name, text, text_len) == 0) | |
5819 | add_filename_to_list (base_name, text, word, &list); | |
5820 | } | |
5821 | } | |
c94fdfd0 EZ |
5822 | } |
5823 | } | |
5824 | ||
bbf2f4df | 5825 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5826 | datum.text = text; |
5827 | datum.word = word; | |
5828 | datum.text_len = text_len; | |
5829 | datum.list = &list; | |
bb4142cf DE |
5830 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5831 | 0 /*need_fullname*/); | |
9fdc877b | 5832 | |
c94fdfd0 EZ |
5833 | return list; |
5834 | } | |
c906108c | 5835 | \f |
51cc5b07 | 5836 | /* Track MAIN */ |
32ac0d11 TT |
5837 | |
5838 | /* Return the "main_info" object for the current program space. If | |
5839 | the object has not yet been created, create it and fill in some | |
5840 | default values. */ | |
5841 | ||
5842 | static struct main_info * | |
5843 | get_main_info (void) | |
5844 | { | |
a32ad8c5 | 5845 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
5846 | |
5847 | if (info == NULL) | |
5848 | { | |
3d548a53 TT |
5849 | /* It may seem strange to store the main name in the progspace |
5850 | and also in whatever objfile happens to see a main name in | |
5851 | its debug info. The reason for this is mainly historical: | |
5852 | gdb returned "main" as the name even if no function named | |
5853 | "main" was defined the program; and this approach lets us | |
5854 | keep compatibility. */ | |
a32ad8c5 | 5855 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
5856 | } |
5857 | ||
5858 | return info; | |
5859 | } | |
5860 | ||
3d548a53 | 5861 | static void |
9e6c82ad | 5862 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5863 | { |
32ac0d11 TT |
5864 | struct main_info *info = get_main_info (); |
5865 | ||
5866 | if (info->name_of_main != NULL) | |
51cc5b07 | 5867 | { |
32ac0d11 TT |
5868 | xfree (info->name_of_main); |
5869 | info->name_of_main = NULL; | |
5870 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5871 | } |
5872 | if (name != NULL) | |
5873 | { | |
32ac0d11 TT |
5874 | info->name_of_main = xstrdup (name); |
5875 | info->language_of_main = lang; | |
51cc5b07 AC |
5876 | } |
5877 | } | |
5878 | ||
ea53e89f JB |
5879 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5880 | accordingly. */ | |
5881 | ||
5882 | static void | |
5883 | find_main_name (void) | |
5884 | { | |
cd6c7346 | 5885 | const char *new_main_name; |
3d548a53 TT |
5886 | |
5887 | /* First check the objfiles to see whether a debuginfo reader has | |
5888 | picked up the appropriate main name. Historically the main name | |
5889 | was found in a more or less random way; this approach instead | |
5890 | relies on the order of objfile creation -- which still isn't | |
5891 | guaranteed to get the correct answer, but is just probably more | |
5892 | accurate. */ | |
2030c079 | 5893 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5894 | { |
5895 | if (objfile->per_bfd->name_of_main != NULL) | |
5896 | { | |
5897 | set_main_name (objfile->per_bfd->name_of_main, | |
5898 | objfile->per_bfd->language_of_main); | |
5899 | return; | |
5900 | } | |
5901 | } | |
ea53e89f JB |
5902 | |
5903 | /* Try to see if the main procedure is in Ada. */ | |
5904 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5905 | be to add a new method in the language vector, and call this | |
5906 | method for each language until one of them returns a non-empty | |
5907 | name. This would allow us to remove this hard-coded call to | |
5908 | an Ada function. It is not clear that this is a better approach | |
5909 | at this point, because all methods need to be written in a way | |
c378eb4e | 5910 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5911 | important that a method does not return a wrong name for the main |
5912 | procedure if the main procedure is actually written in a different | |
5913 | language. It is easy to guaranty this with Ada, since we use a | |
5914 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5915 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5916 | be guarantied for languages such as C, for instance. This suggests |
5917 | that order of call for these methods becomes important, which means | |
5918 | a more complicated approach. */ | |
5919 | new_main_name = ada_main_name (); | |
5920 | if (new_main_name != NULL) | |
9af17804 | 5921 | { |
9e6c82ad | 5922 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5923 | return; |
5924 | } | |
5925 | ||
63778547 IB |
5926 | new_main_name = d_main_name (); |
5927 | if (new_main_name != NULL) | |
5928 | { | |
5929 | set_main_name (new_main_name, language_d); | |
5930 | return; | |
5931 | } | |
5932 | ||
a766d390 DE |
5933 | new_main_name = go_main_name (); |
5934 | if (new_main_name != NULL) | |
5935 | { | |
9e6c82ad | 5936 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5937 | return; |
5938 | } | |
5939 | ||
cd6c7346 PM |
5940 | new_main_name = pascal_main_name (); |
5941 | if (new_main_name != NULL) | |
9af17804 | 5942 | { |
9e6c82ad | 5943 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5944 | return; |
5945 | } | |
5946 | ||
ea53e89f JB |
5947 | /* The languages above didn't identify the name of the main procedure. |
5948 | Fallback to "main". */ | |
9e6c82ad | 5949 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5950 | } |
5951 | ||
cd215b2e TT |
5952 | /* See symtab.h. */ |
5953 | ||
5954 | const char * | |
5955 | main_name () | |
51cc5b07 | 5956 | { |
32ac0d11 TT |
5957 | struct main_info *info = get_main_info (); |
5958 | ||
5959 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5960 | find_main_name (); |
5961 | ||
32ac0d11 | 5962 | return info->name_of_main; |
51cc5b07 AC |
5963 | } |
5964 | ||
9e6c82ad TT |
5965 | /* Return the language of the main function. If it is not known, |
5966 | return language_unknown. */ | |
5967 | ||
5968 | enum language | |
5969 | main_language (void) | |
5970 | { | |
32ac0d11 TT |
5971 | struct main_info *info = get_main_info (); |
5972 | ||
5973 | if (info->name_of_main == NULL) | |
5974 | find_main_name (); | |
5975 | ||
5976 | return info->language_of_main; | |
9e6c82ad TT |
5977 | } |
5978 | ||
ea53e89f JB |
5979 | /* Handle ``executable_changed'' events for the symtab module. */ |
5980 | ||
5981 | static void | |
781b42b0 | 5982 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5983 | { |
5984 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5985 | set_main_name (NULL, language_unknown); |
ea53e89f | 5986 | } |
51cc5b07 | 5987 | |
a6c727b2 DJ |
5988 | /* Return 1 if the supplied producer string matches the ARM RealView |
5989 | compiler (armcc). */ | |
5990 | ||
5991 | int | |
5992 | producer_is_realview (const char *producer) | |
5993 | { | |
5994 | static const char *const arm_idents[] = { | |
5995 | "ARM C Compiler, ADS", | |
5996 | "Thumb C Compiler, ADS", | |
5997 | "ARM C++ Compiler, ADS", | |
5998 | "Thumb C++ Compiler, ADS", | |
5999 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6000 | "ARM C/C++ Compiler, RVCT" | |
6001 | }; | |
6002 | int i; | |
6003 | ||
6004 | if (producer == NULL) | |
6005 | return 0; | |
6006 | ||
6007 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6008 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
6009 | return 1; |
6010 | ||
6011 | return 0; | |
6012 | } | |
ed0616c6 | 6013 | |
f1e6e072 TT |
6014 | \f |
6015 | ||
6016 | /* The next index to hand out in response to a registration request. */ | |
6017 | ||
6018 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6019 | ||
6020 | /* The maximum number of "aclass" registrations we support. This is | |
6021 | constant for convenience. */ | |
6022 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6023 | ||
6024 | /* The objects representing the various "aclass" values. The elements | |
6025 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6026 | elements are those registered at gdb initialization time. */ | |
6027 | ||
6028 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6029 | ||
6030 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6031 | so that it can be const. */ | |
6032 | ||
6033 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6034 | ||
6035 | /* Make sure we saved enough room in struct symbol. */ | |
6036 | ||
6037 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6038 | ||
6039 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6040 | is the ops vector associated with this index. This returns the new | |
6041 | index, which should be used as the aclass_index field for symbols | |
6042 | of this type. */ | |
6043 | ||
6044 | int | |
6045 | register_symbol_computed_impl (enum address_class aclass, | |
6046 | const struct symbol_computed_ops *ops) | |
6047 | { | |
6048 | int result = next_aclass_value++; | |
6049 | ||
6050 | gdb_assert (aclass == LOC_COMPUTED); | |
6051 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6052 | symbol_impl[result].aclass = aclass; | |
6053 | symbol_impl[result].ops_computed = ops; | |
6054 | ||
24d6c2a0 TT |
6055 | /* Sanity check OPS. */ |
6056 | gdb_assert (ops != NULL); | |
6057 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6058 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6059 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6060 | gdb_assert (ops->read_variable != NULL); |
6061 | ||
f1e6e072 TT |
6062 | return result; |
6063 | } | |
6064 | ||
6065 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6066 | OPS is the ops vector associated with this index. This returns the | |
6067 | new index, which should be used as the aclass_index field for symbols | |
6068 | of this type. */ | |
6069 | ||
6070 | int | |
6071 | register_symbol_block_impl (enum address_class aclass, | |
6072 | const struct symbol_block_ops *ops) | |
6073 | { | |
6074 | int result = next_aclass_value++; | |
6075 | ||
6076 | gdb_assert (aclass == LOC_BLOCK); | |
6077 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6078 | symbol_impl[result].aclass = aclass; | |
6079 | symbol_impl[result].ops_block = ops; | |
6080 | ||
6081 | /* Sanity check OPS. */ | |
6082 | gdb_assert (ops != NULL); | |
6083 | gdb_assert (ops->find_frame_base_location != NULL); | |
6084 | ||
6085 | return result; | |
6086 | } | |
6087 | ||
6088 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6089 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6090 | this index. This returns the new index, which should be used as | |
6091 | the aclass_index field for symbols of this type. */ | |
6092 | ||
6093 | int | |
6094 | register_symbol_register_impl (enum address_class aclass, | |
6095 | const struct symbol_register_ops *ops) | |
6096 | { | |
6097 | int result = next_aclass_value++; | |
6098 | ||
6099 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6100 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6101 | symbol_impl[result].aclass = aclass; | |
6102 | symbol_impl[result].ops_register = ops; | |
6103 | ||
6104 | return result; | |
6105 | } | |
6106 | ||
6107 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6108 | address_class. */ | |
6109 | ||
6110 | static void | |
6111 | initialize_ordinary_address_classes (void) | |
6112 | { | |
6113 | int i; | |
6114 | ||
6115 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6116 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6117 | } |
6118 | ||
6119 | \f | |
6120 | ||
1994afbf DE |
6121 | /* Helper function to initialize the fields of an objfile-owned symbol. |
6122 | It assumed that *SYM is already all zeroes. */ | |
6123 | ||
6124 | static void | |
6125 | initialize_objfile_symbol_1 (struct symbol *sym) | |
6126 | { | |
6127 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
6128 | SYMBOL_SECTION (sym) = -1; | |
6129 | } | |
6130 | ||
6131 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
6132 | |
6133 | void | |
38bf1463 | 6134 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
6135 | { |
6136 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 6137 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
6138 | } |
6139 | ||
6140 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6141 | obstack. */ | |
6142 | ||
6143 | struct symbol * | |
6144 | allocate_symbol (struct objfile *objfile) | |
6145 | { | |
6146 | struct symbol *result; | |
6147 | ||
6148 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 6149 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6150 | |
6151 | return result; | |
6152 | } | |
6153 | ||
6154 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6155 | obstack. */ | |
6156 | ||
6157 | struct template_symbol * | |
6158 | allocate_template_symbol (struct objfile *objfile) | |
6159 | { | |
6160 | struct template_symbol *result; | |
6161 | ||
6162 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 6163 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6164 | |
6165 | return result; | |
6166 | } | |
6167 | ||
08be3fe3 DE |
6168 | /* See symtab.h. */ |
6169 | ||
6170 | struct objfile * | |
6171 | symbol_objfile (const struct symbol *symbol) | |
6172 | { | |
1994afbf DE |
6173 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6174 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6175 | } |
6176 | ||
6177 | /* See symtab.h. */ | |
6178 | ||
6179 | struct gdbarch * | |
6180 | symbol_arch (const struct symbol *symbol) | |
6181 | { | |
1994afbf DE |
6182 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6183 | return symbol->owner.arch; | |
6184 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6185 | } |
6186 | ||
6187 | /* See symtab.h. */ | |
6188 | ||
6189 | struct symtab * | |
6190 | symbol_symtab (const struct symbol *symbol) | |
6191 | { | |
1994afbf DE |
6192 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6193 | return symbol->owner.symtab; | |
08be3fe3 DE |
6194 | } |
6195 | ||
6196 | /* See symtab.h. */ | |
6197 | ||
6198 | void | |
6199 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6200 | { | |
1994afbf DE |
6201 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6202 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6203 | } |
6204 | ||
e623cf5d TT |
6205 | \f |
6206 | ||
c906108c | 6207 | void |
fba45db2 | 6208 | _initialize_symtab (void) |
c906108c | 6209 | { |
60cfcb20 AB |
6210 | cmd_list_element *c; |
6211 | ||
f1e6e072 TT |
6212 | initialize_ordinary_address_classes (); |
6213 | ||
60cfcb20 AB |
6214 | c = add_info ("variables", info_variables_command, |
6215 | info_print_args_help (_("\ | |
12615cba PW |
6216 | All global and static variable names or those matching REGEXPs.\n\ |
6217 | Usage: info variables [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6218 | Prints the global and static variables.\n"), | |
6219 | _("global and static variables"))); | |
60cfcb20 | 6220 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6221 | if (dbx_commands) |
60cfcb20 AB |
6222 | { |
6223 | c = add_com ("whereis", class_info, info_variables_command, | |
6224 | info_print_args_help (_("\ | |
12615cba PW |
6225 | All global and static variable names, or those matching REGEXPs.\n\ |
6226 | Usage: whereis [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6227 | Prints the global and static variables.\n"), | |
6228 | _("global and static variables"))); | |
60cfcb20 AB |
6229 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
6230 | } | |
c906108c | 6231 | |
60cfcb20 AB |
6232 | c = add_info ("functions", info_functions_command, |
6233 | info_print_args_help (_("\ | |
12615cba PW |
6234 | All function names or those matching REGEXPs.\n\ |
6235 | Usage: info functions [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\ | |
6236 | Prints the functions.\n"), | |
6237 | _("functions"))); | |
60cfcb20 | 6238 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6239 | |
a8eab7c6 AB |
6240 | c = add_info ("types", info_types_command, _("\ |
6241 | All type names, or those matching REGEXP.\n\ | |
6242 | Usage: info types [-q] [REGEXP]\n\ | |
6243 | Print information about all types matching REGEXP, or all types if no\n\ | |
6244 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6245 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6246 | |
28cd9371 PW |
6247 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6248 | ||
6249 | static std::string info_sources_help | |
6250 | = gdb::option::build_help (_("\ | |
6251 | All source files in the program or those matching REGEXP.\n\ | |
6252 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6253 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6254 | \n\ | |
6255 | Options:\n\ | |
6256 | %OPTIONS%"), | |
6257 | info_sources_opts); | |
6258 | ||
6259 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6260 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c SS |
6261 | |
6262 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6263 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6264 | |
717d2f5a JB |
6265 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6266 | multiple_symbols_modes, &multiple_symbols_mode, | |
6267 | _("\ | |
590042fc | 6268 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6269 | Show how the debugger handles ambiguities in expressions."), _("\ |
6270 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6271 | NULL, NULL, &setlist, &showlist); | |
6272 | ||
c011a4f4 DE |
6273 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6274 | &basenames_may_differ, _("\ | |
6275 | Set whether a source file may have multiple base names."), _("\ | |
6276 | Show whether a source file may have multiple base names."), _("\ | |
6277 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6278 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6279 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6280 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6281 | but it allows the same file be known by more than one base name.\n\ | |
6282 | If not set (the default), all source files are assumed to have just\n\ | |
6283 | one base name, and gdb will do file name comparisons more efficiently."), | |
6284 | NULL, NULL, | |
6285 | &setlist, &showlist); | |
6286 | ||
db0fec5c DE |
6287 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6288 | _("Set debugging of symbol table creation."), | |
6289 | _("Show debugging of symbol table creation."), _("\ | |
6290 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6291 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6292 | A value greater than 1 provides more verbose information."), | |
6293 | NULL, | |
6294 | NULL, | |
6295 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6296 | |
cc485e62 DE |
6297 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6298 | _("\ | |
6299 | Set debugging of symbol lookup."), _("\ | |
6300 | Show debugging of symbol lookup."), _("\ | |
6301 | When enabled (non-zero), symbol lookups are logged."), | |
6302 | NULL, NULL, | |
6303 | &setdebuglist, &showdebuglist); | |
6304 | ||
f57d2163 DE |
6305 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6306 | &new_symbol_cache_size, | |
6307 | _("Set the size of the symbol cache."), | |
6308 | _("Show the size of the symbol cache."), _("\ | |
6309 | The size of the symbol cache.\n\ | |
6310 | If zero then the symbol cache is disabled."), | |
6311 | set_symbol_cache_size_handler, NULL, | |
6312 | &maintenance_set_cmdlist, | |
6313 | &maintenance_show_cmdlist); | |
6314 | ||
6315 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6316 | _("Dump the symbol cache for each program space."), | |
6317 | &maintenanceprintlist); | |
6318 | ||
6319 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6320 | maintenance_print_symbol_cache_statistics, | |
6321 | _("Print symbol cache statistics for each program space."), | |
6322 | &maintenanceprintlist); | |
6323 | ||
6324 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6325 | maintenance_flush_symbol_cache, | |
6326 | _("Flush the symbol cache for each program space."), | |
6327 | &maintenancelist); | |
6328 | ||
76727919 TT |
6329 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6330 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6331 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6332 | } |