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> |
7bb43059 | 71 | #include "gdbsupport/gdb_string_view.h" |
268a13a5 | 72 | #include "gdbsupport/pathstuff.h" |
ccefe4c4 | 73 | |
ff6c39cf | 74 | /* Forward declarations for local functions. */ |
c906108c | 75 | |
0b39b52e | 76 | static void rbreak_command (const char *, int); |
c906108c | 77 | |
f8eba3c6 | 78 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 79 | |
d12307c1 PMR |
80 | static struct block_symbol |
81 | lookup_symbol_aux (const char *name, | |
de63c46b | 82 | symbol_name_match_type match_type, |
d12307c1 PMR |
83 | const struct block *block, |
84 | const domain_enum domain, | |
85 | enum language language, | |
86 | struct field_of_this_result *); | |
fba7f19c | 87 | |
e4051eeb | 88 | static |
d12307c1 | 89 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 90 | symbol_name_match_type match_type, |
d12307c1 PMR |
91 | const struct block *block, |
92 | const domain_enum domain, | |
93 | enum language language); | |
8155455b | 94 | |
d12307c1 | 95 | static struct block_symbol |
c32e6a04 CB |
96 | lookup_symbol_in_objfile (struct objfile *objfile, |
97 | enum block_enum block_index, | |
fe2a438d | 98 | const char *name, const domain_enum domain); |
c906108c | 99 | |
32ac0d11 TT |
100 | /* Type of the data stored on the program space. */ |
101 | ||
102 | struct main_info | |
103 | { | |
a32ad8c5 TT |
104 | main_info () = default; |
105 | ||
106 | ~main_info () | |
107 | { | |
108 | xfree (name_of_main); | |
109 | } | |
110 | ||
32ac0d11 TT |
111 | /* Name of "main". */ |
112 | ||
a32ad8c5 | 113 | char *name_of_main = nullptr; |
32ac0d11 TT |
114 | |
115 | /* Language of "main". */ | |
116 | ||
a32ad8c5 | 117 | enum language language_of_main = language_unknown; |
32ac0d11 TT |
118 | }; |
119 | ||
a32ad8c5 TT |
120 | /* Program space key for finding name and language of "main". */ |
121 | ||
122 | static const program_space_key<main_info> main_progspace_key; | |
123 | ||
f57d2163 DE |
124 | /* The default symbol cache size. |
125 | There is no extra cpu cost for large N (except when flushing the cache, | |
126 | which is rare). The value here is just a first attempt. A better default | |
127 | value may be higher or lower. A prime number can make up for a bad hash | |
128 | computation, so that's why the number is what it is. */ | |
129 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
130 | ||
131 | /* The maximum symbol cache size. | |
132 | There's no method to the decision of what value to use here, other than | |
133 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
134 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
135 | ||
136 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
137 | symbol in any objfile. */ | |
d12307c1 PMR |
138 | #define SYMBOL_LOOKUP_FAILED \ |
139 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
140 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
141 | |
142 | /* Recording lookups that don't find the symbol is just as important, if not | |
143 | more so, than recording found symbols. */ | |
144 | ||
145 | enum symbol_cache_slot_state | |
146 | { | |
147 | SYMBOL_SLOT_UNUSED, | |
148 | SYMBOL_SLOT_NOT_FOUND, | |
149 | SYMBOL_SLOT_FOUND | |
150 | }; | |
151 | ||
52059ffd TT |
152 | struct symbol_cache_slot |
153 | { | |
154 | enum symbol_cache_slot_state state; | |
155 | ||
156 | /* The objfile that was current when the symbol was looked up. | |
157 | This is only needed for global blocks, but for simplicity's sake | |
158 | we allocate the space for both. If data shows the extra space used | |
159 | for static blocks is a problem, we can split things up then. | |
160 | ||
161 | Global blocks need cache lookup to include the objfile context because | |
162 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
163 | which can traverse objfiles in, effectively, any order, depending on | |
164 | the current objfile, thus affecting which symbol is found. Normally, | |
165 | only the current objfile is searched first, and then the rest are | |
166 | searched in recorded order; but putting cache lookup inside | |
167 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
168 | Instead we just make the current objfile part of the context of | |
169 | cache lookup. This means we can record the same symbol multiple times, | |
170 | each with a different "current objfile" that was in effect when the | |
171 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
172 | const struct objfile *objfile_context; | |
173 | ||
174 | union | |
175 | { | |
d12307c1 | 176 | struct block_symbol found; |
52059ffd TT |
177 | struct |
178 | { | |
179 | char *name; | |
180 | domain_enum domain; | |
181 | } not_found; | |
182 | } value; | |
183 | }; | |
184 | ||
f57d2163 DE |
185 | /* Symbols don't specify global vs static block. |
186 | So keep them in separate caches. */ | |
187 | ||
188 | struct block_symbol_cache | |
189 | { | |
190 | unsigned int hits; | |
191 | unsigned int misses; | |
192 | unsigned int collisions; | |
193 | ||
194 | /* SYMBOLS is a variable length array of this size. | |
195 | One can imagine that in general one cache (global/static) should be a | |
196 | fraction of the size of the other, but there's no data at the moment | |
197 | on which to decide. */ | |
198 | unsigned int size; | |
199 | ||
52059ffd | 200 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
201 | }; |
202 | ||
203 | /* The symbol cache. | |
204 | ||
205 | Searching for symbols in the static and global blocks over multiple objfiles | |
206 | again and again can be slow, as can searching very big objfiles. This is a | |
207 | simple cache to improve symbol lookup performance, which is critical to | |
208 | overall gdb performance. | |
209 | ||
210 | Symbols are hashed on the name, its domain, and block. | |
211 | They are also hashed on their objfile for objfile-specific lookups. */ | |
212 | ||
213 | struct symbol_cache | |
214 | { | |
3017b94d TT |
215 | symbol_cache () = default; |
216 | ||
217 | ~symbol_cache () | |
218 | { | |
219 | xfree (global_symbols); | |
220 | xfree (static_symbols); | |
221 | } | |
222 | ||
223 | struct block_symbol_cache *global_symbols = nullptr; | |
224 | struct block_symbol_cache *static_symbols = nullptr; | |
f57d2163 DE |
225 | }; |
226 | ||
3017b94d TT |
227 | /* Program space key for finding its symbol cache. */ |
228 | ||
229 | static const program_space_key<symbol_cache> symbol_cache_key; | |
230 | ||
45cfd468 | 231 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 232 | unsigned int symtab_create_debug = 0; |
45cfd468 | 233 | |
cc485e62 DE |
234 | /* When non-zero, print debugging messages related to symbol lookup. */ |
235 | unsigned int symbol_lookup_debug = 0; | |
236 | ||
f57d2163 DE |
237 | /* The size of the cache is staged here. */ |
238 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
239 | ||
240 | /* The current value of the symbol cache size. | |
241 | This is saved so that if the user enters a value too big we can restore | |
242 | the original value from here. */ | |
243 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
244 | ||
491144b5 | 245 | /* True if a file may be known by two different basenames. |
c011a4f4 DE |
246 | This is the uncommon case, and significantly slows down gdb. |
247 | Default set to "off" to not slow down the common case. */ | |
491144b5 | 248 | bool basenames_may_differ = false; |
c011a4f4 | 249 | |
717d2f5a JB |
250 | /* Allow the user to configure the debugger behavior with respect |
251 | to multiple-choice menus when more than one symbol matches during | |
252 | a symbol lookup. */ | |
253 | ||
7fc830e2 MK |
254 | const char multiple_symbols_ask[] = "ask"; |
255 | const char multiple_symbols_all[] = "all"; | |
256 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 257 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
258 | { |
259 | multiple_symbols_ask, | |
260 | multiple_symbols_all, | |
261 | multiple_symbols_cancel, | |
262 | NULL | |
263 | }; | |
264 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
265 | ||
266 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
267 | ||
268 | const char * | |
269 | multiple_symbols_select_mode (void) | |
270 | { | |
271 | return multiple_symbols_mode; | |
272 | } | |
273 | ||
20c681d1 DE |
274 | /* Return the name of a domain_enum. */ |
275 | ||
276 | const char * | |
277 | domain_name (domain_enum e) | |
278 | { | |
279 | switch (e) | |
280 | { | |
281 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
282 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
283 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 284 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
285 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
286 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
287 | default: gdb_assert_not_reached ("bad domain_enum"); | |
288 | } | |
289 | } | |
290 | ||
291 | /* Return the name of a search_domain . */ | |
292 | ||
293 | const char * | |
294 | search_domain_name (enum search_domain e) | |
295 | { | |
296 | switch (e) | |
297 | { | |
298 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
299 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
300 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
301 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
302 | default: gdb_assert_not_reached ("bad search_domain"); | |
303 | } | |
304 | } | |
305 | ||
43f3e411 | 306 | /* See symtab.h. */ |
db0fec5c | 307 | |
43f3e411 DE |
308 | struct symtab * |
309 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 310 | { |
43f3e411 | 311 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 312 | |
43f3e411 DE |
313 | /* The primary file symtab is the first one in the list. */ |
314 | return COMPUNIT_FILETABS (cust); | |
315 | } | |
316 | ||
317 | /* See symtab.h. */ | |
318 | ||
319 | enum language | |
320 | compunit_language (const struct compunit_symtab *cust) | |
321 | { | |
322 | struct symtab *symtab = compunit_primary_filetab (cust); | |
323 | ||
324 | /* The language of the compunit symtab is the language of its primary | |
325 | source file. */ | |
326 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
327 | } |
328 | ||
1ed9f74e PW |
329 | /* See symtab.h. */ |
330 | ||
331 | bool | |
332 | minimal_symbol::data_p () const | |
333 | { | |
334 | return type == mst_data | |
335 | || type == mst_bss | |
336 | || type == mst_abs | |
337 | || type == mst_file_data | |
338 | || type == mst_file_bss; | |
339 | } | |
340 | ||
341 | /* See symtab.h. */ | |
342 | ||
343 | bool | |
344 | minimal_symbol::text_p () const | |
345 | { | |
346 | return type == mst_text | |
347 | || type == mst_text_gnu_ifunc | |
348 | || type == mst_data_gnu_ifunc | |
349 | || type == mst_slot_got_plt | |
350 | || type == mst_solib_trampoline | |
351 | || type == mst_file_text; | |
352 | } | |
353 | ||
4aac40c8 TT |
354 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
355 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
356 | describes what we advertise). Returns true if they match, false |
357 | otherwise. */ | |
4aac40c8 | 358 | |
ececd218 | 359 | bool |
b57a636e | 360 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
361 | { |
362 | int len = strlen (filename); | |
b57a636e | 363 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
364 | |
365 | if (len < search_len) | |
ececd218 | 366 | return false; |
4aac40c8 TT |
367 | |
368 | /* The tail of FILENAME must match. */ | |
369 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
ececd218 | 370 | return false; |
4aac40c8 TT |
371 | |
372 | /* Either the names must completely match, or the character | |
373 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
374 | directory separator. |
375 | ||
af529f8f JK |
376 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
377 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
378 | absolute path. The sama applies for "c:\file.c" possibly | |
379 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
380 | ||
d84fca2c JK |
381 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
382 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
383 | to put the "c:file.c" name into debug info. Such compatibility | |
384 | works only on GDB built for DOS host. */ | |
4aac40c8 | 385 | return (len == search_len |
af529f8f JK |
386 | || (!IS_ABSOLUTE_PATH (search_name) |
387 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
388 | || (HAS_DRIVE_SPEC (filename) |
389 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
390 | } | |
391 | ||
cce0e923 DE |
392 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
393 | Heads up on the order of the arguments. They match the order of | |
394 | compare_filenames_for_search, but it's the opposite of the order of | |
395 | arguments to gdb_filename_fnmatch. */ | |
396 | ||
ececd218 | 397 | bool |
cce0e923 DE |
398 | compare_glob_filenames_for_search (const char *filename, |
399 | const char *search_name) | |
400 | { | |
401 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
402 | all /s have to be explicitly specified. */ | |
403 | int file_path_elements = count_path_elements (filename); | |
404 | int search_path_elements = count_path_elements (search_name); | |
405 | ||
406 | if (search_path_elements > file_path_elements) | |
ececd218 | 407 | return false; |
cce0e923 DE |
408 | |
409 | if (IS_ABSOLUTE_PATH (search_name)) | |
410 | { | |
411 | return (search_path_elements == file_path_elements | |
412 | && gdb_filename_fnmatch (search_name, filename, | |
413 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
414 | } | |
415 | ||
416 | { | |
417 | const char *file_to_compare | |
418 | = strip_leading_path_elements (filename, | |
419 | file_path_elements - search_path_elements); | |
420 | ||
421 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
422 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
423 | } | |
424 | } | |
425 | ||
f8eba3c6 TT |
426 | /* Check for a symtab of a specific name by searching some symtabs. |
427 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 428 | |
b2d23133 DE |
429 | If NAME is not absolute, then REAL_PATH is NULL |
430 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
431 | ||
14bc53a8 PA |
432 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
433 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 434 | |
43f3e411 DE |
435 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
436 | Each symtab within the specified compunit symtab is also searched. | |
437 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
438 | search until the end of the list. */ |
439 | ||
14bc53a8 | 440 | bool |
f8eba3c6 | 441 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 442 | const char *real_path, |
43f3e411 | 443 | struct compunit_symtab *first, |
14bc53a8 PA |
444 | struct compunit_symtab *after_last, |
445 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 446 | { |
43f3e411 | 447 | struct compunit_symtab *cust; |
c011a4f4 | 448 | const char* base_name = lbasename (name); |
1f84b619 | 449 | |
43f3e411 | 450 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 451 | { |
5accd1a0 | 452 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 453 | { |
43f3e411 DE |
454 | if (compare_filenames_for_search (s->filename, name)) |
455 | { | |
14bc53a8 PA |
456 | if (callback (s)) |
457 | return true; | |
43f3e411 DE |
458 | continue; |
459 | } | |
a94e8645 | 460 | |
43f3e411 DE |
461 | /* Before we invoke realpath, which can get expensive when many |
462 | files are involved, do a quick comparison of the basenames. */ | |
463 | if (! basenames_may_differ | |
464 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
465 | continue; | |
a94e8645 | 466 | |
43f3e411 | 467 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 468 | { |
14bc53a8 PA |
469 | if (callback (s)) |
470 | return true; | |
a94e8645 DE |
471 | continue; |
472 | } | |
43f3e411 DE |
473 | |
474 | /* If the user gave us an absolute path, try to find the file in | |
475 | this symtab and use its absolute path. */ | |
476 | if (real_path != NULL) | |
477 | { | |
478 | const char *fullname = symtab_to_fullname (s); | |
479 | ||
480 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
481 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
482 | if (FILENAME_CMP (real_path, fullname) == 0) | |
483 | { | |
14bc53a8 PA |
484 | if (callback (s)) |
485 | return true; | |
43f3e411 DE |
486 | continue; |
487 | } | |
488 | } | |
a94e8645 | 489 | } |
f8eba3c6 | 490 | } |
58d370e0 | 491 | |
14bc53a8 | 492 | return false; |
f8eba3c6 TT |
493 | } |
494 | ||
495 | /* Check for a symtab of a specific name; first in symtabs, then in | |
496 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
497 | in the symtab filename will also work. | |
498 | ||
14bc53a8 PA |
499 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
500 | true, the search stops. */ | |
f8eba3c6 TT |
501 | |
502 | void | |
503 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 504 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 505 | { |
14bc53a8 | 506 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
507 | |
508 | /* Here we are interested in canonicalizing an absolute path, not | |
509 | absolutizing a relative path. */ | |
510 | if (IS_ABSOLUTE_PATH (name)) | |
511 | { | |
14278e1f | 512 | real_path = gdb_realpath (name); |
14bc53a8 | 513 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
514 | } |
515 | ||
2030c079 | 516 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
517 | { |
518 | if (iterate_over_some_symtabs (name, real_path.get (), | |
519 | objfile->compunit_symtabs, NULL, | |
520 | callback)) | |
f8eba3c6 | 521 | return; |
14bc53a8 | 522 | } |
f8eba3c6 | 523 | |
c906108c SS |
524 | /* Same search rules as above apply here, but now we look thru the |
525 | psymtabs. */ | |
526 | ||
2030c079 | 527 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
528 | { |
529 | if (objfile->sf | |
530 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
531 | name, | |
532 | real_path.get (), | |
533 | callback)) | |
f8eba3c6 | 534 | return; |
14bc53a8 | 535 | } |
c906108c | 536 | } |
f8eba3c6 TT |
537 | |
538 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
539 | symtab, or NULL. */ | |
540 | ||
541 | struct symtab * | |
542 | lookup_symtab (const char *name) | |
543 | { | |
544 | struct symtab *result = NULL; | |
545 | ||
14bc53a8 PA |
546 | iterate_over_symtabs (name, [&] (symtab *symtab) |
547 | { | |
548 | result = symtab; | |
549 | return true; | |
550 | }); | |
551 | ||
f8eba3c6 TT |
552 | return result; |
553 | } | |
554 | ||
c906108c SS |
555 | \f |
556 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
557 | full method name, which consist of the class name (from T), the unadorned | |
558 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 559 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
560 | |
561 | char * | |
fba45db2 | 562 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
563 | { |
564 | int mangled_name_len; | |
565 | char *mangled_name; | |
566 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
567 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 568 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 569 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 570 | const char *newname = TYPE_NAME (type); |
c906108c SS |
571 | |
572 | /* Does the form of physname indicate that it is the full mangled name | |
573 | of a constructor (not just the args)? */ | |
574 | int is_full_physname_constructor; | |
575 | ||
576 | int is_constructor; | |
015a42b4 | 577 | int is_destructor = is_destructor_name (physname); |
c906108c | 578 | /* Need a new type prefix. */ |
e6a959d6 PA |
579 | const char *const_prefix = method->is_const ? "C" : ""; |
580 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
581 | char buf[20]; |
582 | int len = (newname == NULL ? 0 : strlen (newname)); | |
583 | ||
43630227 PS |
584 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
585 | or an operator name. */ | |
586 | if ((physname[0] == '_' && physname[1] == 'Z') | |
587 | || is_operator_name (field_name)) | |
235d1e03 EZ |
588 | return xstrdup (physname); |
589 | ||
015a42b4 | 590 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 591 | |
3e43a32a MS |
592 | is_constructor = is_full_physname_constructor |
593 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
594 | |
595 | if (!is_destructor) | |
61012eef | 596 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
597 | |
598 | if (is_destructor || is_full_physname_constructor) | |
599 | { | |
c5aa993b JM |
600 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
601 | strcpy (mangled_name, physname); | |
c906108c SS |
602 | return mangled_name; |
603 | } | |
604 | ||
605 | if (len == 0) | |
606 | { | |
8c042590 | 607 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
608 | } |
609 | else if (physname[0] == 't' || physname[0] == 'Q') | |
610 | { | |
611 | /* The physname for template and qualified methods already includes | |
c5aa993b | 612 | the class name. */ |
8c042590 | 613 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
614 | newname = NULL; |
615 | len = 0; | |
616 | } | |
617 | else | |
618 | { | |
8c042590 PM |
619 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
620 | volatile_prefix, len); | |
c906108c SS |
621 | } |
622 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 623 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 624 | |
433759f7 MS |
625 | mangled_name = (char *) xmalloc (mangled_name_len); |
626 | if (is_constructor) | |
627 | mangled_name[0] = '\0'; | |
628 | else | |
629 | strcpy (mangled_name, field_name); | |
630 | ||
c906108c SS |
631 | strcat (mangled_name, buf); |
632 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
633 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 634 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
635 | if (newname != NULL) |
636 | strcat (mangled_name, newname); | |
637 | ||
638 | strcat (mangled_name, physname); | |
639 | return (mangled_name); | |
640 | } | |
12af6855 | 641 | |
b250c185 | 642 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 643 | correctly allocated. */ |
eca864fe | 644 | |
b250c185 SW |
645 | void |
646 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 647 | const char *name, |
ccde22c0 | 648 | struct obstack *obstack) |
b250c185 | 649 | { |
7c5fdd25 | 650 | if (gsymbol->language == language_ada) |
f85f34ed TT |
651 | { |
652 | if (name == NULL) | |
653 | { | |
654 | gsymbol->ada_mangled = 0; | |
655 | gsymbol->language_specific.obstack = obstack; | |
656 | } | |
657 | else | |
658 | { | |
659 | gsymbol->ada_mangled = 1; | |
615b3f62 | 660 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
661 | } |
662 | } | |
29df156d | 663 | else |
615b3f62 | 664 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
665 | } |
666 | ||
667 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 668 | |
0d5cff50 | 669 | const char * |
b250c185 SW |
670 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
671 | { | |
7c5fdd25 | 672 | if (gsymbol->language == language_ada) |
f85f34ed TT |
673 | { |
674 | if (!gsymbol->ada_mangled) | |
675 | return NULL; | |
676 | /* Fall through. */ | |
677 | } | |
678 | ||
615b3f62 | 679 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
680 | } |
681 | ||
12af6855 | 682 | \f |
89aad1f9 | 683 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 684 | depending upon the language for the symbol. */ |
eca864fe | 685 | |
89aad1f9 | 686 | void |
33e5013e | 687 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
688 | enum language language, |
689 | struct obstack *obstack) | |
89aad1f9 EZ |
690 | { |
691 | gsymbol->language = language; | |
7c5fdd25 DE |
692 | if (gsymbol->language == language_cplus |
693 | || gsymbol->language == language_d | |
a766d390 | 694 | || gsymbol->language == language_go |
f55ee35c JK |
695 | || gsymbol->language == language_objc |
696 | || gsymbol->language == language_fortran) | |
89aad1f9 | 697 | { |
f85f34ed TT |
698 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
699 | } | |
700 | else if (gsymbol->language == language_ada) | |
701 | { | |
702 | gdb_assert (gsymbol->ada_mangled == 0); | |
703 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 704 | } |
89aad1f9 EZ |
705 | else |
706 | { | |
707 | memset (&gsymbol->language_specific, 0, | |
708 | sizeof (gsymbol->language_specific)); | |
709 | } | |
710 | } | |
711 | ||
2de7ced7 DJ |
712 | /* Functions to initialize a symbol's mangled name. */ |
713 | ||
04a679b8 TT |
714 | /* Objects of this type are stored in the demangled name hash table. */ |
715 | struct demangled_name_entry | |
716 | { | |
7bb43059 | 717 | gdb::string_view mangled; |
e99f9db0 | 718 | ENUM_BITFIELD(language) language : LANGUAGE_BITS; |
04a679b8 TT |
719 | char demangled[1]; |
720 | }; | |
721 | ||
722 | /* Hash function for the demangled name hash. */ | |
eca864fe | 723 | |
04a679b8 TT |
724 | static hashval_t |
725 | hash_demangled_name_entry (const void *data) | |
726 | { | |
19ba03f4 SM |
727 | const struct demangled_name_entry *e |
728 | = (const struct demangled_name_entry *) data; | |
433759f7 | 729 | |
7bb43059 | 730 | return iterative_hash (e->mangled.data (), e->mangled.length (), 0); |
04a679b8 TT |
731 | } |
732 | ||
733 | /* Equality function for the demangled name hash. */ | |
eca864fe | 734 | |
04a679b8 TT |
735 | static int |
736 | eq_demangled_name_entry (const void *a, const void *b) | |
737 | { | |
19ba03f4 SM |
738 | const struct demangled_name_entry *da |
739 | = (const struct demangled_name_entry *) a; | |
740 | const struct demangled_name_entry *db | |
741 | = (const struct demangled_name_entry *) b; | |
433759f7 | 742 | |
7bb43059 | 743 | return da->mangled == db->mangled; |
04a679b8 TT |
744 | } |
745 | ||
2de7ced7 DJ |
746 | /* Create the hash table used for demangled names. Each hash entry is |
747 | a pair of strings; one for the mangled name and one for the demangled | |
748 | name. The entry is hashed via just the mangled name. */ | |
749 | ||
750 | static void | |
0f14768a | 751 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
752 | { |
753 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 754 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
755 | Choosing a much larger table size wastes memory, and saves only about |
756 | 1% in symbol reading. */ | |
757 | ||
db92718b | 758 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
04a679b8 | 759 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
db92718b | 760 | NULL, xcalloc, xfree)); |
2de7ced7 | 761 | } |
12af6855 | 762 | |
2de7ced7 | 763 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
764 | language of that symbol. If the language is set to language_auto, |
765 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
766 | then set the language appropriately. The returned name is allocated |
767 | by the demangler and should be xfree'd. */ | |
12af6855 | 768 | |
2de7ced7 DJ |
769 | static char * |
770 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
771 | const char *mangled) | |
12af6855 | 772 | { |
12af6855 | 773 | char *demangled = NULL; |
8b302db8 | 774 | int i; |
12af6855 JB |
775 | |
776 | if (gsymbol->language == language_unknown) | |
777 | gsymbol->language = language_auto; | |
1bae87b9 | 778 | |
8b302db8 | 779 | if (gsymbol->language != language_auto) |
1bae87b9 | 780 | { |
8b302db8 TT |
781 | const struct language_defn *lang = language_def (gsymbol->language); |
782 | ||
783 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
784 | return demangled; | |
6aecb9c2 | 785 | } |
8b302db8 TT |
786 | |
787 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 788 | { |
8b302db8 TT |
789 | enum language l = (enum language) i; |
790 | const struct language_defn *lang = language_def (l); | |
791 | ||
792 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 793 | { |
8b302db8 | 794 | gsymbol->language = l; |
a766d390 DE |
795 | return demangled; |
796 | } | |
797 | } | |
798 | ||
2de7ced7 DJ |
799 | return NULL; |
800 | } | |
801 | ||
980cae7a | 802 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
803 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
804 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
805 | NUL-terminated, then this function assumes that NAME is already | |
806 | correctly saved (either permanently or with a lifetime tied to the | |
807 | objfile), and it will not be copied. | |
808 | ||
809 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 810 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 811 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
812 | |
813 | void | |
814 | symbol_set_names (struct general_symbol_info *gsymbol, | |
67547d89 | 815 | const char *linkage_name, int len, bool copy_name, |
1d94a5a3 | 816 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 817 | { |
04a679b8 | 818 | struct demangled_name_entry **slot; |
980cae7a DC |
819 | /* A 0-terminated copy of the linkage name. */ |
820 | const char *linkage_name_copy; | |
04a679b8 | 821 | struct demangled_name_entry entry; |
2de7ced7 | 822 | |
b06ead72 JB |
823 | if (gsymbol->language == language_ada) |
824 | { | |
825 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 826 | we can save some space by not storing the demangled name. */ |
04a679b8 | 827 | if (!copy_name) |
0d5cff50 | 828 | gsymbol->name = linkage_name; |
04a679b8 TT |
829 | else |
830 | { | |
224c3ddb SM |
831 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
832 | len + 1); | |
0d5cff50 DE |
833 | |
834 | memcpy (name, linkage_name, len); | |
835 | name[len] = '\0'; | |
836 | gsymbol->name = name; | |
04a679b8 | 837 | } |
84a1243b | 838 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
839 | |
840 | return; | |
841 | } | |
842 | ||
84a1243b | 843 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 844 | create_demangled_names_hash (per_bfd); |
04a679b8 | 845 | |
9c37b5ae | 846 | if (linkage_name[len] != '\0') |
2de7ced7 | 847 | { |
980cae7a DC |
848 | char *alloc_name; |
849 | ||
9c37b5ae | 850 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 851 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 852 | alloc_name[len] = '\0'; |
980cae7a DC |
853 | |
854 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
855 | } |
856 | else | |
9c37b5ae | 857 | linkage_name_copy = linkage_name; |
2de7ced7 | 858 | |
7bb43059 | 859 | entry.mangled = gdb::string_view (linkage_name_copy, len); |
04a679b8 | 860 | slot = ((struct demangled_name_entry **) |
db92718b | 861 | htab_find_slot (per_bfd->demangled_names_hash.get (), |
04a679b8 | 862 | &entry, INSERT)); |
2de7ced7 DJ |
863 | |
864 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
865 | if (*slot == NULL |
866 | /* A C version of the symbol may have already snuck into the table. | |
867 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
868 | || (gsymbol->language == language_go | |
869 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 870 | { |
e99f9db0 TV |
871 | char *demangled_name_ptr |
872 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
873 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
9325300d | 874 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 875 | |
04a679b8 | 876 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 877 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
878 | mangled name saved, and we don't have a demangled name. So, |
879 | you might think we could save a little space by not recording | |
880 | this in the hash table at all. | |
881 | ||
882 | It turns out that it is actually important to still save such | |
883 | an entry in the hash table, because storing this name gives | |
705b5767 | 884 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 885 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 886 | { |
224c3ddb SM |
887 | *slot |
888 | = ((struct demangled_name_entry *) | |
889 | obstack_alloc (&per_bfd->storage_obstack, | |
890 | offsetof (struct demangled_name_entry, demangled) | |
891 | + demangled_len + 1)); | |
7bb43059 | 892 | (*slot)->mangled = gdb::string_view (linkage_name, len); |
04a679b8 TT |
893 | } |
894 | else | |
895 | { | |
9d2ceabe TT |
896 | char *mangled_ptr; |
897 | ||
04a679b8 TT |
898 | /* If we must copy the mangled name, put it directly after |
899 | the demangled name so we can have a single | |
900 | allocation. */ | |
224c3ddb SM |
901 | *slot |
902 | = ((struct demangled_name_entry *) | |
903 | obstack_alloc (&per_bfd->storage_obstack, | |
904 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 905 | + len + demangled_len + 2)); |
9d2ceabe | 906 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 907 | strcpy (mangled_ptr, linkage_name_copy); |
7bb43059 | 908 | (*slot)->mangled = gdb::string_view (mangled_ptr, len); |
04a679b8 | 909 | } |
e99f9db0 | 910 | (*slot)->language = gsymbol->language; |
04a679b8 | 911 | |
980cae7a | 912 | if (demangled_name != NULL) |
e99f9db0 | 913 | strcpy ((*slot)->demangled, demangled_name.get ()); |
2de7ced7 | 914 | else |
04a679b8 | 915 | (*slot)->demangled[0] = '\0'; |
2de7ced7 | 916 | } |
e99f9db0 TV |
917 | else if (gsymbol->language == language_unknown |
918 | || gsymbol->language == language_auto) | |
919 | gsymbol->language = (*slot)->language; | |
2de7ced7 | 920 | |
7bb43059 | 921 | gsymbol->name = (*slot)->mangled.data (); |
04a679b8 | 922 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 923 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 924 | &per_bfd->storage_obstack); |
2de7ced7 | 925 | else |
84a1243b | 926 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
927 | } |
928 | ||
22abf04a DC |
929 | /* Return the source code name of a symbol. In languages where |
930 | demangling is necessary, this is the demangled name. */ | |
931 | ||
0d5cff50 | 932 | const char * |
22abf04a DC |
933 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
934 | { | |
9af17804 | 935 | switch (gsymbol->language) |
22abf04a | 936 | { |
1f8173e6 | 937 | case language_cplus: |
6aecb9c2 | 938 | case language_d: |
a766d390 | 939 | case language_go: |
1f8173e6 | 940 | case language_objc: |
f55ee35c | 941 | case language_fortran: |
b250c185 SW |
942 | if (symbol_get_demangled_name (gsymbol) != NULL) |
943 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
944 | break; |
945 | case language_ada: | |
f85f34ed | 946 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
947 | default: |
948 | break; | |
22abf04a | 949 | } |
1f8173e6 | 950 | return gsymbol->name; |
22abf04a DC |
951 | } |
952 | ||
9cc0d196 | 953 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 954 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 955 | |
0d5cff50 | 956 | const char * |
df8a16a1 | 957 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 958 | { |
c6e5ee5e SDJ |
959 | const char *dem_name = NULL; |
960 | ||
9af17804 | 961 | switch (gsymbol->language) |
1f8173e6 PH |
962 | { |
963 | case language_cplus: | |
6aecb9c2 | 964 | case language_d: |
a766d390 | 965 | case language_go: |
1f8173e6 | 966 | case language_objc: |
f55ee35c | 967 | case language_fortran: |
c6e5ee5e | 968 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
969 | break; |
970 | case language_ada: | |
f85f34ed | 971 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
972 | break; |
973 | default: | |
974 | break; | |
975 | } | |
c6e5ee5e | 976 | return dem_name; |
9cc0d196 | 977 | } |
fe39c653 | 978 | |
4725b721 PH |
979 | /* Return the search name of a symbol---generally the demangled or |
980 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 981 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 982 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 983 | |
0d5cff50 | 984 | const char * |
fc062ac6 JB |
985 | symbol_search_name (const struct general_symbol_info *gsymbol) |
986 | { | |
1f8173e6 PH |
987 | if (gsymbol->language == language_ada) |
988 | return gsymbol->name; | |
989 | else | |
990 | return symbol_natural_name (gsymbol); | |
4725b721 | 991 | } |
b5ec771e PA |
992 | |
993 | /* See symtab.h. */ | |
994 | ||
995 | bool | |
996 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
997 | const lookup_name_info &name) | |
998 | { | |
999 | symbol_name_matcher_ftype *name_match | |
618daa93 | 1000 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
1001 | return name_match (symbol_search_name (gsymbol), name, NULL); |
1002 | } | |
1003 | ||
c906108c SS |
1004 | \f |
1005 | ||
ececd218 | 1006 | /* Return true if the two sections are the same, or if they could |
94277a38 DJ |
1007 | plausibly be copies of each other, one in an original object |
1008 | file and another in a separated debug file. */ | |
1009 | ||
ececd218 | 1010 | bool |
714835d5 UW |
1011 | matching_obj_sections (struct obj_section *obj_first, |
1012 | struct obj_section *obj_second) | |
94277a38 | 1013 | { |
714835d5 UW |
1014 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1015 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1016 | |
1017 | /* If they're the same section, then they match. */ | |
1018 | if (first == second) | |
ececd218 | 1019 | return true; |
94277a38 DJ |
1020 | |
1021 | /* If either is NULL, give up. */ | |
1022 | if (first == NULL || second == NULL) | |
ececd218 | 1023 | return false; |
94277a38 DJ |
1024 | |
1025 | /* This doesn't apply to absolute symbols. */ | |
1026 | if (first->owner == NULL || second->owner == NULL) | |
ececd218 | 1027 | return false; |
94277a38 DJ |
1028 | |
1029 | /* If they're in the same object file, they must be different sections. */ | |
1030 | if (first->owner == second->owner) | |
ececd218 | 1031 | return false; |
94277a38 DJ |
1032 | |
1033 | /* Check whether the two sections are potentially corresponding. They must | |
1034 | have the same size, address, and name. We can't compare section indexes, | |
1035 | which would be more reliable, because some sections may have been | |
1036 | stripped. */ | |
fd361982 | 1037 | if (bfd_section_size (first) != bfd_section_size (second)) |
ececd218 | 1038 | return false; |
94277a38 | 1039 | |
818f79f6 | 1040 | /* In-memory addresses may start at a different offset, relativize them. */ |
fd361982 AM |
1041 | if (bfd_section_vma (first) - bfd_get_start_address (first->owner) |
1042 | != bfd_section_vma (second) - bfd_get_start_address (second->owner)) | |
ececd218 | 1043 | return false; |
94277a38 | 1044 | |
fd361982 AM |
1045 | if (bfd_section_name (first) == NULL |
1046 | || bfd_section_name (second) == NULL | |
1047 | || strcmp (bfd_section_name (first), bfd_section_name (second)) != 0) | |
ececd218 | 1048 | return false; |
94277a38 DJ |
1049 | |
1050 | /* Otherwise check that they are in corresponding objfiles. */ | |
1051 | ||
9d7c67bf | 1052 | struct objfile *obj = NULL; |
2030c079 | 1053 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1054 | if (objfile->obfd == first->owner) |
1055 | { | |
1056 | obj = objfile; | |
1057 | break; | |
1058 | } | |
94277a38 DJ |
1059 | gdb_assert (obj != NULL); |
1060 | ||
1061 | if (obj->separate_debug_objfile != NULL | |
1062 | && obj->separate_debug_objfile->obfd == second->owner) | |
ececd218 | 1063 | return true; |
94277a38 DJ |
1064 | if (obj->separate_debug_objfile_backlink != NULL |
1065 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
ececd218 | 1066 | return true; |
94277a38 | 1067 | |
ececd218 | 1068 | return false; |
94277a38 | 1069 | } |
c5aa993b | 1070 | |
2097ae25 DE |
1071 | /* See symtab.h. */ |
1072 | ||
1073 | void | |
1074 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1075 | { |
77e371c0 | 1076 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1077 | |
1078 | /* If we know that this is not a text address, return failure. This is | |
1079 | necessary because we loop based on texthigh and textlow, which do | |
1080 | not include the data ranges. */ | |
77e371c0 | 1081 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1082 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1083 | return; |
c906108c | 1084 | |
2030c079 | 1085 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1086 | { |
1087 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1088 | |
aed57c53 TT |
1089 | if (objfile->sf) |
1090 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1091 | pc, section, 0); | |
1092 | if (cust) | |
1093 | return; | |
1094 | } | |
c906108c | 1095 | } |
c906108c | 1096 | \f |
f57d2163 DE |
1097 | /* Hash function for the symbol cache. */ |
1098 | ||
1099 | static unsigned int | |
1100 | hash_symbol_entry (const struct objfile *objfile_context, | |
1101 | const char *name, domain_enum domain) | |
1102 | { | |
1103 | unsigned int hash = (uintptr_t) objfile_context; | |
1104 | ||
1105 | if (name != NULL) | |
1106 | hash += htab_hash_string (name); | |
1107 | ||
2c26b84f DE |
1108 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1109 | to map to the same slot. */ | |
1110 | if (domain == STRUCT_DOMAIN) | |
1111 | hash += VAR_DOMAIN * 7; | |
1112 | else | |
1113 | hash += domain * 7; | |
f57d2163 DE |
1114 | |
1115 | return hash; | |
1116 | } | |
1117 | ||
1118 | /* Equality function for the symbol cache. */ | |
1119 | ||
1120 | static int | |
1121 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1122 | const struct objfile *objfile_context, | |
1123 | const char *name, domain_enum domain) | |
1124 | { | |
1125 | const char *slot_name; | |
1126 | domain_enum slot_domain; | |
1127 | ||
1128 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1129 | return 0; | |
1130 | ||
1131 | if (slot->objfile_context != objfile_context) | |
1132 | return 0; | |
1133 | ||
1134 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1135 | { | |
1136 | slot_name = slot->value.not_found.name; | |
1137 | slot_domain = slot->value.not_found.domain; | |
1138 | } | |
1139 | else | |
1140 | { | |
d12307c1 PMR |
1141 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1142 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1143 | } |
1144 | ||
1145 | /* NULL names match. */ | |
1146 | if (slot_name == NULL && name == NULL) | |
1147 | { | |
1148 | /* But there's no point in calling symbol_matches_domain in the | |
1149 | SYMBOL_SLOT_FOUND case. */ | |
1150 | if (slot_domain != domain) | |
1151 | return 0; | |
1152 | } | |
1153 | else if (slot_name != NULL && name != NULL) | |
1154 | { | |
b5ec771e PA |
1155 | /* It's important that we use the same comparison that was done |
1156 | the first time through. If the slot records a found symbol, | |
1157 | then this means using the symbol name comparison function of | |
1158 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1159 | dictionary.c. It also means using symbol_matches_domain for | |
1160 | found symbols. See block.c. | |
f57d2163 DE |
1161 | |
1162 | If the slot records a not-found symbol, then require a precise match. | |
1163 | We could still be lax with whitespace like strcmp_iw though. */ | |
1164 | ||
1165 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1166 | { | |
1167 | if (strcmp (slot_name, name) != 0) | |
1168 | return 0; | |
1169 | if (slot_domain != domain) | |
1170 | return 0; | |
1171 | } | |
1172 | else | |
1173 | { | |
d12307c1 | 1174 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1175 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1176 | |
b5ec771e | 1177 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1178 | return 0; |
b5ec771e | 1179 | |
f57d2163 DE |
1180 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1181 | slot_domain, domain)) | |
1182 | return 0; | |
1183 | } | |
1184 | } | |
1185 | else | |
1186 | { | |
1187 | /* Only one name is NULL. */ | |
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | return 1; | |
1192 | } | |
1193 | ||
1194 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1195 | length array) in bytes. */ | |
1196 | ||
1197 | static size_t | |
1198 | symbol_cache_byte_size (unsigned int size) | |
1199 | { | |
1200 | return (sizeof (struct block_symbol_cache) | |
1201 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1202 | } | |
1203 | ||
1204 | /* Resize CACHE. */ | |
1205 | ||
1206 | static void | |
1207 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1208 | { | |
1209 | /* If there's no change in size, don't do anything. | |
1210 | All caches have the same size, so we can just compare with the size | |
1211 | of the global symbols cache. */ | |
1212 | if ((cache->global_symbols != NULL | |
1213 | && cache->global_symbols->size == new_size) | |
1214 | || (cache->global_symbols == NULL | |
1215 | && new_size == 0)) | |
1216 | return; | |
1217 | ||
1218 | xfree (cache->global_symbols); | |
1219 | xfree (cache->static_symbols); | |
1220 | ||
1221 | if (new_size == 0) | |
1222 | { | |
1223 | cache->global_symbols = NULL; | |
1224 | cache->static_symbols = NULL; | |
1225 | } | |
1226 | else | |
1227 | { | |
1228 | size_t total_size = symbol_cache_byte_size (new_size); | |
1229 | ||
224c3ddb SM |
1230 | cache->global_symbols |
1231 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1232 | cache->static_symbols | |
1233 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1234 | cache->global_symbols->size = new_size; |
1235 | cache->static_symbols->size = new_size; | |
1236 | } | |
1237 | } | |
1238 | ||
f57d2163 DE |
1239 | /* Return the symbol cache of PSPACE. |
1240 | Create one if it doesn't exist yet. */ | |
1241 | ||
1242 | static struct symbol_cache * | |
1243 | get_symbol_cache (struct program_space *pspace) | |
1244 | { | |
3017b94d | 1245 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1246 | |
1247 | if (cache == NULL) | |
1248 | { | |
3017b94d TT |
1249 | cache = symbol_cache_key.emplace (pspace); |
1250 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1251 | } |
1252 | ||
1253 | return cache; | |
1254 | } | |
1255 | ||
f57d2163 DE |
1256 | /* Set the size of the symbol cache in all program spaces. */ |
1257 | ||
1258 | static void | |
1259 | set_symbol_cache_size (unsigned int new_size) | |
1260 | { | |
1261 | struct program_space *pspace; | |
1262 | ||
1263 | ALL_PSPACES (pspace) | |
1264 | { | |
3017b94d | 1265 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1266 | |
1267 | /* The pspace could have been created but not have a cache yet. */ | |
1268 | if (cache != NULL) | |
1269 | resize_symbol_cache (cache, new_size); | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | /* Called when symbol-cache-size is set. */ | |
1274 | ||
1275 | static void | |
eb4c3f4a | 1276 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1277 | struct cmd_list_element *c) |
1278 | { | |
1279 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1280 | { | |
1281 | /* Restore the previous value. | |
1282 | This is the value the "show" command prints. */ | |
1283 | new_symbol_cache_size = symbol_cache_size; | |
1284 | ||
1285 | error (_("Symbol cache size is too large, max is %u."), | |
1286 | MAX_SYMBOL_CACHE_SIZE); | |
1287 | } | |
1288 | symbol_cache_size = new_symbol_cache_size; | |
1289 | ||
1290 | set_symbol_cache_size (symbol_cache_size); | |
1291 | } | |
1292 | ||
1293 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1294 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1295 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1296 | failed (and thus this one will too), or NULL if the symbol is not present | |
1297 | in the cache. | |
d0509ba4 CB |
1298 | *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which |
1299 | can be used to save the result of a full lookup attempt. */ | |
f57d2163 | 1300 | |
d12307c1 | 1301 | static struct block_symbol |
f57d2163 | 1302 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1303 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1304 | const char *name, domain_enum domain, |
1305 | struct block_symbol_cache **bsc_ptr, | |
1306 | struct symbol_cache_slot **slot_ptr) | |
1307 | { | |
1308 | struct block_symbol_cache *bsc; | |
1309 | unsigned int hash; | |
1310 | struct symbol_cache_slot *slot; | |
1311 | ||
1312 | if (block == GLOBAL_BLOCK) | |
1313 | bsc = cache->global_symbols; | |
1314 | else | |
1315 | bsc = cache->static_symbols; | |
1316 | if (bsc == NULL) | |
1317 | { | |
1318 | *bsc_ptr = NULL; | |
1319 | *slot_ptr = NULL; | |
6640a367 | 1320 | return {}; |
f57d2163 DE |
1321 | } |
1322 | ||
1323 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1324 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 | 1325 | |
d0509ba4 CB |
1326 | *bsc_ptr = bsc; |
1327 | *slot_ptr = slot; | |
1328 | ||
f57d2163 DE |
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 | ||
f57d2163 DE |
1346 | if (symbol_lookup_debug) |
1347 | { | |
1348 | fprintf_unfiltered (gdb_stdlog, | |
1349 | "%s block symbol cache miss for %s, %s\n", | |
1350 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1351 | name, domain_name (domain)); | |
1352 | } | |
1353 | ++bsc->misses; | |
6640a367 | 1354 | return {}; |
f57d2163 DE |
1355 | } |
1356 | ||
1357 | /* Clear out SLOT. */ | |
1358 | ||
1359 | static void | |
1360 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1361 | { | |
1362 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1363 | xfree (slot->value.not_found.name); | |
1364 | slot->state = SYMBOL_SLOT_UNUSED; | |
1365 | } | |
1366 | ||
1367 | /* Mark SYMBOL as found in SLOT. | |
1368 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1369 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1370 | necessarily the objfile the symbol was found in. */ | |
1371 | ||
1372 | static void | |
1373 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1374 | struct symbol_cache_slot *slot, | |
1375 | struct objfile *objfile_context, | |
d12307c1 PMR |
1376 | struct symbol *symbol, |
1377 | const struct block *block) | |
f57d2163 DE |
1378 | { |
1379 | if (bsc == NULL) | |
1380 | return; | |
1381 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1382 | { | |
1383 | ++bsc->collisions; | |
1384 | symbol_cache_clear_slot (slot); | |
1385 | } | |
1386 | slot->state = SYMBOL_SLOT_FOUND; | |
1387 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1388 | slot->value.found.symbol = symbol; |
1389 | slot->value.found.block = block; | |
f57d2163 DE |
1390 | } |
1391 | ||
1392 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1393 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1394 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1395 | ||
1396 | static void | |
1397 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1398 | struct symbol_cache_slot *slot, | |
1399 | struct objfile *objfile_context, | |
1400 | const char *name, domain_enum domain) | |
1401 | { | |
1402 | if (bsc == NULL) | |
1403 | return; | |
1404 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1405 | { | |
1406 | ++bsc->collisions; | |
1407 | symbol_cache_clear_slot (slot); | |
1408 | } | |
1409 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1410 | slot->objfile_context = objfile_context; | |
1411 | slot->value.not_found.name = xstrdup (name); | |
1412 | slot->value.not_found.domain = domain; | |
1413 | } | |
1414 | ||
1415 | /* Flush the symbol cache of PSPACE. */ | |
1416 | ||
1417 | static void | |
1418 | symbol_cache_flush (struct program_space *pspace) | |
1419 | { | |
3017b94d | 1420 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1421 | int pass; |
f57d2163 DE |
1422 | |
1423 | if (cache == NULL) | |
1424 | return; | |
1425 | if (cache->global_symbols == NULL) | |
1426 | { | |
1427 | gdb_assert (symbol_cache_size == 0); | |
1428 | gdb_assert (cache->static_symbols == NULL); | |
1429 | return; | |
1430 | } | |
1431 | ||
1432 | /* If the cache is untouched since the last flush, early exit. | |
1433 | This is important for performance during the startup of a program linked | |
1434 | with 100s (or 1000s) of shared libraries. */ | |
1435 | if (cache->global_symbols->misses == 0 | |
1436 | && cache->static_symbols->misses == 0) | |
1437 | return; | |
1438 | ||
1439 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1440 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1441 | ||
1442 | for (pass = 0; pass < 2; ++pass) | |
1443 | { | |
1444 | struct block_symbol_cache *bsc | |
1445 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1446 | unsigned int i; | |
1447 | ||
1448 | for (i = 0; i < bsc->size; ++i) | |
1449 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1450 | } | |
1451 | ||
1452 | cache->global_symbols->hits = 0; | |
1453 | cache->global_symbols->misses = 0; | |
1454 | cache->global_symbols->collisions = 0; | |
1455 | cache->static_symbols->hits = 0; | |
1456 | cache->static_symbols->misses = 0; | |
1457 | cache->static_symbols->collisions = 0; | |
1458 | } | |
1459 | ||
1460 | /* Dump CACHE. */ | |
1461 | ||
1462 | static void | |
1463 | symbol_cache_dump (const struct symbol_cache *cache) | |
1464 | { | |
1465 | int pass; | |
1466 | ||
1467 | if (cache->global_symbols == NULL) | |
1468 | { | |
1469 | printf_filtered (" <disabled>\n"); | |
1470 | return; | |
1471 | } | |
1472 | ||
1473 | for (pass = 0; pass < 2; ++pass) | |
1474 | { | |
1475 | const struct block_symbol_cache *bsc | |
1476 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1477 | unsigned int i; | |
1478 | ||
1479 | if (pass == 0) | |
1480 | printf_filtered ("Global symbols:\n"); | |
1481 | else | |
1482 | printf_filtered ("Static symbols:\n"); | |
1483 | ||
1484 | for (i = 0; i < bsc->size; ++i) | |
1485 | { | |
1486 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1487 | ||
1488 | QUIT; | |
1489 | ||
1490 | switch (slot->state) | |
1491 | { | |
1492 | case SYMBOL_SLOT_UNUSED: | |
1493 | break; | |
1494 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1495 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1496 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1497 | slot->value.not_found.name, |
1498 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1499 | break; |
1500 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1501 | { |
1502 | struct symbol *found = slot->value.found.symbol; | |
1503 | const struct objfile *context = slot->objfile_context; | |
1504 | ||
1505 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1506 | host_address_to_string (context), | |
1507 | SYMBOL_PRINT_NAME (found), | |
1508 | domain_name (SYMBOL_DOMAIN (found))); | |
1509 | break; | |
1510 | } | |
f57d2163 DE |
1511 | } |
1512 | } | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | /* The "mt print symbol-cache" command. */ | |
1517 | ||
1518 | static void | |
510e5e56 | 1519 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1520 | { |
1521 | struct program_space *pspace; | |
1522 | ||
1523 | ALL_PSPACES (pspace) | |
1524 | { | |
1525 | struct symbol_cache *cache; | |
1526 | ||
1527 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1528 | pspace->num, | |
1529 | pspace->symfile_object_file != NULL | |
1530 | ? objfile_name (pspace->symfile_object_file) | |
1531 | : "(no object file)"); | |
1532 | ||
1533 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1534 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1535 | if (cache == NULL) |
1536 | printf_filtered (" <empty>\n"); | |
1537 | else | |
1538 | symbol_cache_dump (cache); | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | /* The "mt flush-symbol-cache" command. */ | |
1543 | ||
1544 | static void | |
510e5e56 | 1545 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1546 | { |
1547 | struct program_space *pspace; | |
1548 | ||
1549 | ALL_PSPACES (pspace) | |
1550 | { | |
1551 | symbol_cache_flush (pspace); | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | /* Print usage statistics of CACHE. */ | |
1556 | ||
1557 | static void | |
1558 | symbol_cache_stats (struct symbol_cache *cache) | |
1559 | { | |
1560 | int pass; | |
1561 | ||
1562 | if (cache->global_symbols == NULL) | |
1563 | { | |
1564 | printf_filtered (" <disabled>\n"); | |
1565 | return; | |
1566 | } | |
1567 | ||
1568 | for (pass = 0; pass < 2; ++pass) | |
1569 | { | |
1570 | const struct block_symbol_cache *bsc | |
1571 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1572 | ||
1573 | QUIT; | |
1574 | ||
1575 | if (pass == 0) | |
1576 | printf_filtered ("Global block cache stats:\n"); | |
1577 | else | |
1578 | printf_filtered ("Static block cache stats:\n"); | |
1579 | ||
1580 | printf_filtered (" size: %u\n", bsc->size); | |
1581 | printf_filtered (" hits: %u\n", bsc->hits); | |
1582 | printf_filtered (" misses: %u\n", bsc->misses); | |
1583 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | /* The "mt print symbol-cache-statistics" command. */ | |
1588 | ||
1589 | static void | |
510e5e56 | 1590 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1591 | { |
1592 | struct program_space *pspace; | |
1593 | ||
1594 | ALL_PSPACES (pspace) | |
1595 | { | |
1596 | struct symbol_cache *cache; | |
1597 | ||
1598 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1599 | pspace->num, | |
1600 | pspace->symfile_object_file != NULL | |
1601 | ? objfile_name (pspace->symfile_object_file) | |
1602 | : "(no object file)"); | |
1603 | ||
1604 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1605 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1606 | if (cache == NULL) |
1607 | printf_filtered (" empty, no stats available\n"); | |
1608 | else | |
1609 | symbol_cache_stats (cache); | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | /* This module's 'new_objfile' observer. */ | |
1614 | ||
1615 | static void | |
1616 | symtab_new_objfile_observer (struct objfile *objfile) | |
1617 | { | |
1618 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1619 | symbol_cache_flush (current_program_space); | |
1620 | } | |
1621 | ||
1622 | /* This module's 'free_objfile' observer. */ | |
1623 | ||
1624 | static void | |
1625 | symtab_free_objfile_observer (struct objfile *objfile) | |
1626 | { | |
1627 | symbol_cache_flush (objfile->pspace); | |
1628 | } | |
1629 | \f | |
c906108c SS |
1630 | /* Debug symbols usually don't have section information. We need to dig that |
1631 | out of the minimal symbols and stash that in the debug symbol. */ | |
1632 | ||
ccefe4c4 | 1633 | void |
907fc202 UW |
1634 | fixup_section (struct general_symbol_info *ginfo, |
1635 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1636 | { |
1637 | struct minimal_symbol *msym; | |
c906108c | 1638 | |
bccdca4a UW |
1639 | /* First, check whether a minimal symbol with the same name exists |
1640 | and points to the same address. The address check is required | |
1641 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1642 | point to the function descriptor, while the debug symbol will | |
1643 | point to the actual function code. */ | |
907fc202 UW |
1644 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1645 | if (msym) | |
efd66ac6 | 1646 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1647 | else |
19e2d14b KB |
1648 | { |
1649 | /* Static, function-local variables do appear in the linker | |
1650 | (minimal) symbols, but are frequently given names that won't | |
1651 | be found via lookup_minimal_symbol(). E.g., it has been | |
1652 | observed in frv-uclinux (ELF) executables that a static, | |
1653 | function-local variable named "foo" might appear in the | |
1654 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1655 | point in attempting to extend the lookup-by-name mechanism to | |
1656 | handle this case due to the fact that there can be multiple | |
1657 | names. | |
9af17804 | 1658 | |
19e2d14b KB |
1659 | So, instead, search the section table when lookup by name has |
1660 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1661 | been relocated. If so, the relocation offset (i.e. the | |
1662 | ANOFFSET value) needs to be subtracted from these values when | |
1663 | performing the comparison. We unconditionally subtract it, | |
1664 | because, when no relocation has been performed, the ANOFFSET | |
1665 | value will simply be zero. | |
9af17804 | 1666 | |
19e2d14b KB |
1667 | The address of the symbol whose section we're fixing up HAS |
1668 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1669 | the section isn't yet known and knowing the section is | |
1670 | necessary in order to add the correct relocation value. In | |
1671 | other words, we wouldn't even be in this function (attempting | |
1672 | to compute the section) if it were already known. | |
1673 | ||
1674 | Note that it is possible to search the minimal symbols | |
1675 | (subtracting the relocation value if necessary) to find the | |
1676 | matching minimal symbol, but this is overkill and much less | |
1677 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1678 | symbol, only its section. |
1679 | ||
19e2d14b KB |
1680 | Note that this technique (of doing a section table search) |
1681 | can fail when unrelocated section addresses overlap. For | |
1682 | this reason, we still attempt a lookup by name prior to doing | |
1683 | a search of the section table. */ | |
9af17804 | 1684 | |
19e2d14b | 1685 | struct obj_section *s; |
e27d198c | 1686 | int fallback = -1; |
433759f7 | 1687 | |
19e2d14b KB |
1688 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1689 | { | |
65cf3563 | 1690 | int idx = s - objfile->sections; |
19e2d14b KB |
1691 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1692 | ||
e27d198c TT |
1693 | if (fallback == -1) |
1694 | fallback = idx; | |
1695 | ||
f1f6aadf PA |
1696 | if (obj_section_addr (s) - offset <= addr |
1697 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1698 | { |
19e2d14b KB |
1699 | ginfo->section = idx; |
1700 | return; | |
1701 | } | |
1702 | } | |
e27d198c TT |
1703 | |
1704 | /* If we didn't find the section, assume it is in the first | |
1705 | section. If there is no allocated section, then it hardly | |
1706 | matters what we pick, so just pick zero. */ | |
1707 | if (fallback == -1) | |
1708 | ginfo->section = 0; | |
1709 | else | |
1710 | ginfo->section = fallback; | |
19e2d14b | 1711 | } |
c906108c SS |
1712 | } |
1713 | ||
1714 | struct symbol * | |
fba45db2 | 1715 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1716 | { |
907fc202 UW |
1717 | CORE_ADDR addr; |
1718 | ||
c906108c SS |
1719 | if (!sym) |
1720 | return NULL; | |
1721 | ||
1994afbf DE |
1722 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1723 | return sym; | |
1724 | ||
907fc202 UW |
1725 | /* We either have an OBJFILE, or we can get at it from the sym's |
1726 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1727 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1728 | |
1729 | if (objfile == NULL) | |
08be3fe3 | 1730 | objfile = symbol_objfile (sym); |
907fc202 | 1731 | |
e27d198c TT |
1732 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1733 | return sym; | |
1734 | ||
907fc202 UW |
1735 | /* We should have an objfile by now. */ |
1736 | gdb_assert (objfile); | |
1737 | ||
1738 | switch (SYMBOL_CLASS (sym)) | |
1739 | { | |
1740 | case LOC_STATIC: | |
1741 | case LOC_LABEL: | |
907fc202 UW |
1742 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1743 | break; | |
1744 | case LOC_BLOCK: | |
2b1ffcfd | 1745 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1746 | break; |
1747 | ||
1748 | default: | |
1749 | /* Nothing else will be listed in the minsyms -- no use looking | |
1750 | it up. */ | |
1751 | return sym; | |
1752 | } | |
1753 | ||
1754 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1755 | |
1756 | return sym; | |
1757 | } | |
1758 | ||
b5ec771e PA |
1759 | /* See symtab.h. */ |
1760 | ||
1761 | demangle_for_lookup_info::demangle_for_lookup_info | |
1762 | (const lookup_name_info &lookup_name, language lang) | |
1763 | { | |
1764 | demangle_result_storage storage; | |
1765 | ||
c62446b1 PA |
1766 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1767 | { | |
1768 | gdb::unique_xmalloc_ptr<char> without_params | |
1769 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1770 | lookup_name.completion_mode ()); | |
1771 | ||
1772 | if (without_params != NULL) | |
1773 | { | |
de63c46b PA |
1774 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1775 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1776 | lang, storage); | |
c62446b1 PA |
1777 | return; |
1778 | } | |
1779 | } | |
1780 | ||
de63c46b PA |
1781 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1782 | m_demangled_name = lookup_name.name (); | |
1783 | else | |
1784 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1785 | lang, storage); | |
b5ec771e PA |
1786 | } |
1787 | ||
1788 | /* See symtab.h. */ | |
1789 | ||
1790 | const lookup_name_info & | |
1791 | lookup_name_info::match_any () | |
1792 | { | |
1793 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1794 | symbol names. */ | |
1795 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1796 | true); | |
1797 | ||
1798 | return lookup_name; | |
1799 | } | |
1800 | ||
f8eba3c6 | 1801 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1802 | lookup functions. The result can either be the input NAME |
1803 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1804 | |
2f408ecb | 1805 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1806 | Normally, Ada symbol lookups are performed using the encoded name |
1807 | rather than the demangled name, and so it might seem to make sense | |
1808 | for this function to return an encoded version of NAME. | |
1809 | Unfortunately, we cannot do this, because this function is used in | |
1810 | circumstances where it is not appropriate to try to encode NAME. | |
1811 | For instance, when displaying the frame info, we demangle the name | |
1812 | of each parameter, and then perform a symbol lookup inside our | |
1813 | function using that demangled name. In Ada, certain functions | |
1814 | have internally-generated parameters whose name contain uppercase | |
1815 | characters. Encoding those name would result in those uppercase | |
1816 | characters to become lowercase, and thus cause the symbol lookup | |
1817 | to fail. */ | |
c906108c | 1818 | |
2f408ecb | 1819 | const char * |
f8eba3c6 | 1820 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1821 | demangle_result_storage &storage) |
c906108c | 1822 | { |
9c37b5ae | 1823 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1824 | lookup, so we can always binary search. */ |
53c5240f | 1825 | if (lang == language_cplus) |
729051e6 | 1826 | { |
2f408ecb PA |
1827 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1828 | if (demangled_name != NULL) | |
1829 | return storage.set_malloc_ptr (demangled_name); | |
1830 | ||
1831 | /* If we were given a non-mangled name, canonicalize it | |
1832 | according to the language (so far only for C++). */ | |
1833 | std::string canon = cp_canonicalize_string (name); | |
1834 | if (!canon.empty ()) | |
1835 | return storage.swap_string (canon); | |
729051e6 | 1836 | } |
6aecb9c2 JB |
1837 | else if (lang == language_d) |
1838 | { | |
2f408ecb PA |
1839 | char *demangled_name = d_demangle (name, 0); |
1840 | if (demangled_name != NULL) | |
1841 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1842 | } |
a766d390 DE |
1843 | else if (lang == language_go) |
1844 | { | |
2f408ecb PA |
1845 | char *demangled_name = go_demangle (name, 0); |
1846 | if (demangled_name != NULL) | |
1847 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1848 | } |
729051e6 | 1849 | |
2f408ecb | 1850 | return name; |
f8eba3c6 TT |
1851 | } |
1852 | ||
5ffa0793 PA |
1853 | /* See symtab.h. */ |
1854 | ||
1855 | unsigned int | |
1856 | search_name_hash (enum language language, const char *search_name) | |
1857 | { | |
1858 | return language_def (language)->la_search_name_hash (search_name); | |
1859 | } | |
1860 | ||
cf901d3b | 1861 | /* See symtab.h. |
f8eba3c6 | 1862 | |
cf901d3b | 1863 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1864 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1865 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1866 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1867 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1868 | that there is C++ code below which can error(), but that probably |
1869 | doesn't affect these calls since they are looking for a known | |
1870 | variable and thus can probably assume it will never hit the C++ | |
1871 | code). */ | |
1872 | ||
d12307c1 | 1873 | struct block_symbol |
f8eba3c6 TT |
1874 | lookup_symbol_in_language (const char *name, const struct block *block, |
1875 | const domain_enum domain, enum language lang, | |
1993b719 | 1876 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1877 | { |
2f408ecb PA |
1878 | demangle_result_storage storage; |
1879 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1880 | |
de63c46b PA |
1881 | return lookup_symbol_aux (modified_name, |
1882 | symbol_name_match_type::FULL, | |
1883 | block, domain, lang, | |
2f408ecb | 1884 | is_a_field_of_this); |
fba7f19c EZ |
1885 | } |
1886 | ||
cf901d3b | 1887 | /* See symtab.h. */ |
53c5240f | 1888 | |
d12307c1 | 1889 | struct block_symbol |
53c5240f | 1890 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1891 | domain_enum domain, |
1892 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1893 | { |
1894 | return lookup_symbol_in_language (name, block, domain, | |
1895 | current_language->la_language, | |
2570f2b7 | 1896 | is_a_field_of_this); |
53c5240f PA |
1897 | } |
1898 | ||
cf901d3b | 1899 | /* See symtab.h. */ |
66a17cb6 | 1900 | |
de63c46b PA |
1901 | struct block_symbol |
1902 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1903 | domain_enum domain) | |
1904 | { | |
1905 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1906 | block, domain, language_asm, NULL); | |
1907 | } | |
1908 | ||
1909 | /* See symtab.h. */ | |
1910 | ||
d12307c1 | 1911 | struct block_symbol |
66a17cb6 TT |
1912 | lookup_language_this (const struct language_defn *lang, |
1913 | const struct block *block) | |
1914 | { | |
1915 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1916 | return {}; |
66a17cb6 | 1917 | |
cc485e62 DE |
1918 | if (symbol_lookup_debug > 1) |
1919 | { | |
1920 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1921 | ||
1922 | fprintf_unfiltered (gdb_stdlog, | |
1923 | "lookup_language_this (%s, %s (objfile %s))", | |
1924 | lang->la_name, host_address_to_string (block), | |
1925 | objfile_debug_name (objfile)); | |
1926 | } | |
1927 | ||
03de6823 | 1928 | while (block) |
66a17cb6 TT |
1929 | { |
1930 | struct symbol *sym; | |
1931 | ||
de63c46b PA |
1932 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1933 | symbol_name_match_type::SEARCH_NAME, | |
1934 | VAR_DOMAIN); | |
66a17cb6 | 1935 | if (sym != NULL) |
f149aabd | 1936 | { |
cc485e62 DE |
1937 | if (symbol_lookup_debug > 1) |
1938 | { | |
1939 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1940 | SYMBOL_PRINT_NAME (sym), | |
1941 | host_address_to_string (sym), | |
1942 | host_address_to_string (block)); | |
1943 | } | |
d12307c1 | 1944 | return (struct block_symbol) {sym, block}; |
f149aabd | 1945 | } |
66a17cb6 | 1946 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1947 | break; |
66a17cb6 TT |
1948 | block = BLOCK_SUPERBLOCK (block); |
1949 | } | |
03de6823 | 1950 | |
cc485e62 DE |
1951 | if (symbol_lookup_debug > 1) |
1952 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1953 | return {}; |
66a17cb6 TT |
1954 | } |
1955 | ||
2dc3df72 TT |
1956 | /* Given TYPE, a structure/union, |
1957 | return 1 if the component named NAME from the ultimate target | |
1958 | structure/union is defined, otherwise, return 0. */ | |
1959 | ||
1960 | static int | |
1993b719 TT |
1961 | check_field (struct type *type, const char *name, |
1962 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1963 | { |
1964 | int i; | |
1965 | ||
1966 | /* The type may be a stub. */ | |
f168693b | 1967 | type = check_typedef (type); |
2dc3df72 TT |
1968 | |
1969 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1970 | { | |
1971 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1972 | ||
1973 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1974 | { |
1975 | is_a_field_of_this->type = type; | |
1976 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1977 | return 1; | |
1978 | } | |
2dc3df72 TT |
1979 | } |
1980 | ||
1981 | /* C++: If it was not found as a data field, then try to return it | |
1982 | as a pointer to a method. */ | |
1983 | ||
1984 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1985 | { | |
1986 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1987 | { |
1988 | is_a_field_of_this->type = type; | |
1989 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1990 | return 1; | |
1991 | } | |
2dc3df72 TT |
1992 | } |
1993 | ||
1994 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1995 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1996 | return 1; |
1997 | ||
1998 | return 0; | |
1999 | } | |
2000 | ||
53c5240f | 2001 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2002 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2003 | |
d12307c1 | 2004 | static struct block_symbol |
de63c46b PA |
2005 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2006 | const struct block *block, | |
94af9270 | 2007 | const domain_enum domain, enum language language, |
1993b719 | 2008 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2009 | { |
d12307c1 | 2010 | struct block_symbol result; |
53c5240f | 2011 | const struct language_defn *langdef; |
406bc4de | 2012 | |
cc485e62 DE |
2013 | if (symbol_lookup_debug) |
2014 | { | |
2015 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2016 | ||
2017 | fprintf_unfiltered (gdb_stdlog, | |
2018 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2019 | name, host_address_to_string (block), | |
2020 | objfile != NULL | |
2021 | ? objfile_debug_name (objfile) : "NULL", | |
2022 | domain_name (domain), language_str (language)); | |
2023 | } | |
2024 | ||
9a146a11 EZ |
2025 | /* Make sure we do something sensible with is_a_field_of_this, since |
2026 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2027 | certainly use it later. If we don't set it, the contents of |
2028 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2029 | if (is_a_field_of_this != NULL) |
1993b719 | 2030 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2031 | |
e4051eeb DC |
2032 | /* Search specified block and its superiors. Don't search |
2033 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2034 | |
de63c46b | 2035 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2036 | if (result.symbol != NULL) |
cc485e62 DE |
2037 | { |
2038 | if (symbol_lookup_debug) | |
2039 | { | |
2040 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2041 | host_address_to_string (result.symbol)); |
cc485e62 | 2042 | } |
d12307c1 | 2043 | return result; |
cc485e62 | 2044 | } |
c906108c | 2045 | |
53c5240f | 2046 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2047 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2048 | |
2049 | langdef = language_def (language); | |
5f9a71c3 | 2050 | |
6592e36f TT |
2051 | /* Don't do this check if we are searching for a struct. It will |
2052 | not be found by check_field, but will be found by other | |
2053 | means. */ | |
2054 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2055 | { |
d12307c1 | 2056 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2057 | |
d12307c1 | 2058 | if (result.symbol) |
c906108c | 2059 | { |
d12307c1 | 2060 | struct type *t = result.symbol->type; |
9af17804 | 2061 | |
2b2d9e11 VP |
2062 | /* I'm not really sure that type of this can ever |
2063 | be typedefed; just be safe. */ | |
f168693b | 2064 | t = check_typedef (t); |
aa006118 | 2065 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2066 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2067 | |
2b2d9e11 VP |
2068 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2069 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2070 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2071 | langdef->la_name_of_this); |
9af17804 | 2072 | |
1993b719 | 2073 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2074 | { |
2075 | if (symbol_lookup_debug) | |
2076 | { | |
2077 | fprintf_unfiltered (gdb_stdlog, | |
2078 | "lookup_symbol_aux (...) = NULL\n"); | |
2079 | } | |
6640a367 | 2080 | return {}; |
cc485e62 | 2081 | } |
c906108c SS |
2082 | } |
2083 | } | |
2084 | ||
53c5240f | 2085 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2086 | up static and global variables. */ |
c906108c | 2087 | |
d12307c1 PMR |
2088 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2089 | if (result.symbol != NULL) | |
cc485e62 DE |
2090 | { |
2091 | if (symbol_lookup_debug) | |
2092 | { | |
2093 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2094 | host_address_to_string (result.symbol)); |
cc485e62 | 2095 | } |
d12307c1 | 2096 | return result; |
cc485e62 | 2097 | } |
c906108c | 2098 | |
774b6a14 TT |
2099 | /* Now search all static file-level symbols. Not strictly correct, |
2100 | but more useful than an error. */ | |
41f62f39 | 2101 | |
d12307c1 | 2102 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2103 | if (symbol_lookup_debug) |
2104 | { | |
2105 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2106 | result.symbol != NULL |
2107 | ? host_address_to_string (result.symbol) | |
2108 | : "NULL"); | |
cc485e62 | 2109 | } |
d12307c1 | 2110 | return result; |
41f62f39 JK |
2111 | } |
2112 | ||
e4051eeb | 2113 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2114 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2115 | |
d12307c1 | 2116 | static struct block_symbol |
de63c46b PA |
2117 | lookup_local_symbol (const char *name, |
2118 | symbol_name_match_type match_type, | |
2119 | const struct block *block, | |
74016e12 DE |
2120 | const domain_enum domain, |
2121 | enum language language) | |
8155455b DC |
2122 | { |
2123 | struct symbol *sym; | |
89a9d1b1 | 2124 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2125 | const char *scope = block_scope (block); |
2126 | ||
e4051eeb DC |
2127 | /* Check if either no block is specified or it's a global block. */ |
2128 | ||
89a9d1b1 | 2129 | if (static_block == NULL) |
6640a367 | 2130 | return {}; |
e4051eeb | 2131 | |
89a9d1b1 | 2132 | while (block != static_block) |
f61e8913 | 2133 | { |
de63c46b | 2134 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2135 | if (sym != NULL) |
d12307c1 | 2136 | return (struct block_symbol) {sym, block}; |
edb3359d | 2137 | |
f55ee35c | 2138 | if (language == language_cplus || language == language_fortran) |
13387711 | 2139 | { |
b926417a | 2140 | struct block_symbol blocksym |
d12307c1 PMR |
2141 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2142 | domain); | |
2143 | ||
b926417a TT |
2144 | if (blocksym.symbol != NULL) |
2145 | return blocksym; | |
13387711 SW |
2146 | } |
2147 | ||
edb3359d DJ |
2148 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2149 | break; | |
f61e8913 DC |
2150 | block = BLOCK_SUPERBLOCK (block); |
2151 | } | |
2152 | ||
3aee438b | 2153 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2154 | |
6640a367 | 2155 | return {}; |
f61e8913 DC |
2156 | } |
2157 | ||
cf901d3b | 2158 | /* See symtab.h. */ |
3a40aaa0 | 2159 | |
c0201579 | 2160 | struct objfile * |
3a40aaa0 UW |
2161 | lookup_objfile_from_block (const struct block *block) |
2162 | { | |
3a40aaa0 UW |
2163 | if (block == NULL) |
2164 | return NULL; | |
2165 | ||
2166 | block = block_global_block (block); | |
43f3e411 | 2167 | /* Look through all blockvectors. */ |
2030c079 | 2168 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2169 | { |
b669c953 | 2170 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2171 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2172 | GLOBAL_BLOCK)) | |
2173 | { | |
2174 | if (obj->separate_debug_objfile_backlink) | |
2175 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2176 | |
d8aeb77f TT |
2177 | return obj; |
2178 | } | |
2179 | } | |
3a40aaa0 UW |
2180 | |
2181 | return NULL; | |
2182 | } | |
2183 | ||
cf901d3b | 2184 | /* See symtab.h. */ |
f61e8913 | 2185 | |
5f9a71c3 | 2186 | struct symbol * |
de63c46b PA |
2187 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2188 | const struct block *block, | |
d1a2d36d | 2189 | const domain_enum domain) |
f61e8913 DC |
2190 | { |
2191 | struct symbol *sym; | |
f61e8913 | 2192 | |
cc485e62 DE |
2193 | if (symbol_lookup_debug > 1) |
2194 | { | |
2195 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2196 | ||
2197 | fprintf_unfiltered (gdb_stdlog, | |
2198 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2199 | name, host_address_to_string (block), | |
2200 | objfile_debug_name (objfile), | |
2201 | domain_name (domain)); | |
2202 | } | |
2203 | ||
de63c46b | 2204 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2205 | if (sym) |
8155455b | 2206 | { |
cc485e62 DE |
2207 | if (symbol_lookup_debug > 1) |
2208 | { | |
2209 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2210 | host_address_to_string (sym)); | |
2211 | } | |
21b556f4 | 2212 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2213 | } |
2214 | ||
cc485e62 DE |
2215 | if (symbol_lookup_debug > 1) |
2216 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2217 | return NULL; |
2218 | } | |
2219 | ||
cf901d3b | 2220 | /* See symtab.h. */ |
3a40aaa0 | 2221 | |
d12307c1 | 2222 | struct block_symbol |
efad9b6a | 2223 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2224 | enum block_enum block_index, |
3a40aaa0 | 2225 | const char *name, |
21b556f4 | 2226 | const domain_enum domain) |
3a40aaa0 | 2227 | { |
442853af CB |
2228 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2229 | ||
bde09ab7 | 2230 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2231 | { |
d12307c1 | 2232 | struct block_symbol result |
442853af | 2233 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2234 | |
442853af | 2235 | if (result.symbol != nullptr) |
d12307c1 | 2236 | return result; |
15d123c9 | 2237 | } |
56e3f43c | 2238 | |
6640a367 | 2239 | return {}; |
3a40aaa0 UW |
2240 | } |
2241 | ||
19630284 JB |
2242 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2243 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2244 | depending on whether or not we want to search global symbols or |
2245 | static symbols. */ | |
2246 | ||
d12307c1 | 2247 | static struct block_symbol |
c32e6a04 CB |
2248 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2249 | enum block_enum block_index, const char *name, | |
2250 | const domain_enum domain) | |
19630284 | 2251 | { |
ba715d7f JK |
2252 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2253 | ||
cc485e62 DE |
2254 | if (symbol_lookup_debug > 1) |
2255 | { | |
2256 | fprintf_unfiltered (gdb_stdlog, | |
2257 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2258 | objfile_debug_name (objfile), | |
2259 | block_index == GLOBAL_BLOCK | |
2260 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2261 | name, domain_name (domain)); | |
2262 | } | |
2263 | ||
b669c953 | 2264 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2265 | { |
43f3e411 DE |
2266 | const struct blockvector *bv; |
2267 | const struct block *block; | |
d12307c1 | 2268 | struct block_symbol result; |
43f3e411 DE |
2269 | |
2270 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2271 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2272 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2273 | result.block = block; | |
2274 | if (result.symbol != NULL) | |
a743abeb | 2275 | { |
cc485e62 DE |
2276 | if (symbol_lookup_debug > 1) |
2277 | { | |
2278 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2279 | host_address_to_string (result.symbol), |
cc485e62 DE |
2280 | host_address_to_string (block)); |
2281 | } | |
d12307c1 PMR |
2282 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2283 | return result; | |
2284 | ||
a743abeb DE |
2285 | } |
2286 | } | |
19630284 | 2287 | |
cc485e62 DE |
2288 | if (symbol_lookup_debug > 1) |
2289 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2290 | return {}; |
19630284 JB |
2291 | } |
2292 | ||
74016e12 | 2293 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2294 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2295 | and all associated separate debug objfiles. |
2296 | ||
2297 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2298 | because the outer loop will cause them to be searched too. This case is | |
2299 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2300 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2301 | |
d12307c1 | 2302 | static struct block_symbol |
422d65e7 DE |
2303 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2304 | const char *linkage_name, | |
2305 | domain_enum domain) | |
2306 | { | |
2307 | enum language lang = current_language->la_language; | |
e9ad22ee | 2308 | struct objfile *main_objfile; |
422d65e7 | 2309 | |
2f408ecb PA |
2310 | demangle_result_storage storage; |
2311 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2312 | ||
422d65e7 DE |
2313 | if (objfile->separate_debug_objfile_backlink) |
2314 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2315 | else | |
2316 | main_objfile = objfile; | |
2317 | ||
bde09ab7 | 2318 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2319 | { |
d12307c1 PMR |
2320 | struct block_symbol result; |
2321 | ||
2322 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2323 | modified_name, domain); | |
2324 | if (result.symbol == NULL) | |
2325 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2326 | modified_name, domain); | |
2327 | if (result.symbol != NULL) | |
2f408ecb | 2328 | return result; |
422d65e7 DE |
2329 | } |
2330 | ||
6640a367 | 2331 | return {}; |
422d65e7 DE |
2332 | } |
2333 | ||
08c23b0d TT |
2334 | /* A helper function that throws an exception when a symbol was found |
2335 | in a psymtab but not in a symtab. */ | |
2336 | ||
2337 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2338 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2339 | struct compunit_symtab *cust) |
08c23b0d TT |
2340 | { |
2341 | error (_("\ | |
2342 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2343 | %s may be an inlined function, or may be a template function\n \ | |
2344 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2345 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2346 | name, |
2347 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2348 | name, name); | |
08c23b0d TT |
2349 | } |
2350 | ||
74016e12 DE |
2351 | /* A helper function for various lookup routines that interfaces with |
2352 | the "quick" symbol table functions. */ | |
8155455b | 2353 | |
d12307c1 | 2354 | static struct block_symbol |
ddbcedf5 CB |
2355 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2356 | enum block_enum block_index, const char *name, | |
2357 | const domain_enum domain) | |
8155455b | 2358 | { |
43f3e411 | 2359 | struct compunit_symtab *cust; |
346d1dfe | 2360 | const struct blockvector *bv; |
8155455b | 2361 | const struct block *block; |
d12307c1 | 2362 | struct block_symbol result; |
8155455b | 2363 | |
ccefe4c4 | 2364 | if (!objfile->sf) |
6640a367 | 2365 | return {}; |
cc485e62 DE |
2366 | |
2367 | if (symbol_lookup_debug > 1) | |
2368 | { | |
2369 | fprintf_unfiltered (gdb_stdlog, | |
2370 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2371 | objfile_debug_name (objfile), | |
2372 | block_index == GLOBAL_BLOCK | |
2373 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2374 | name, domain_name (domain)); | |
2375 | } | |
2376 | ||
43f3e411 DE |
2377 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2378 | if (cust == NULL) | |
cc485e62 DE |
2379 | { |
2380 | if (symbol_lookup_debug > 1) | |
2381 | { | |
2382 | fprintf_unfiltered (gdb_stdlog, | |
2383 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2384 | } | |
6640a367 | 2385 | return {}; |
cc485e62 | 2386 | } |
8155455b | 2387 | |
43f3e411 | 2388 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2389 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2390 | result.symbol = block_lookup_symbol (block, name, |
2391 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2392 | if (result.symbol == NULL) |
43f3e411 | 2393 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2394 | |
2395 | if (symbol_lookup_debug > 1) | |
2396 | { | |
2397 | fprintf_unfiltered (gdb_stdlog, | |
2398 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2399 | host_address_to_string (result.symbol), |
cc485e62 DE |
2400 | host_address_to_string (block)); |
2401 | } | |
2402 | ||
d12307c1 PMR |
2403 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2404 | result.block = block; | |
2405 | return result; | |
8155455b DC |
2406 | } |
2407 | ||
cf901d3b | 2408 | /* See symtab.h. */ |
5f9a71c3 | 2409 | |
d12307c1 | 2410 | struct block_symbol |
f606139a DE |
2411 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2412 | const char *name, | |
5f9a71c3 | 2413 | const struct block *block, |
21b556f4 | 2414 | const domain_enum domain) |
5f9a71c3 | 2415 | { |
d12307c1 | 2416 | struct block_symbol result; |
5f9a71c3 | 2417 | |
d9060ba6 DE |
2418 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2419 | the current objfile. Searching the current objfile first is useful | |
2420 | for both matching user expectations as well as performance. */ | |
2421 | ||
d12307c1 PMR |
2422 | result = lookup_symbol_in_static_block (name, block, domain); |
2423 | if (result.symbol != NULL) | |
2424 | return result; | |
5f9a71c3 | 2425 | |
1994afbf DE |
2426 | /* If we didn't find a definition for a builtin type in the static block, |
2427 | search for it now. This is actually the right thing to do and can be | |
2428 | a massive performance win. E.g., when debugging a program with lots of | |
2429 | shared libraries we could search all of them only to find out the | |
2430 | builtin type isn't defined in any of them. This is common for types | |
2431 | like "void". */ | |
2432 | if (domain == VAR_DOMAIN) | |
2433 | { | |
2434 | struct gdbarch *gdbarch; | |
2435 | ||
2436 | if (block == NULL) | |
2437 | gdbarch = target_gdbarch (); | |
2438 | else | |
2439 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2440 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2441 | gdbarch, name); | |
2442 | result.block = NULL; | |
2443 | if (result.symbol != NULL) | |
2444 | return result; | |
1994afbf DE |
2445 | } |
2446 | ||
08724ab7 | 2447 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2448 | } |
2449 | ||
cf901d3b | 2450 | /* See symtab.h. */ |
5f9a71c3 | 2451 | |
d12307c1 | 2452 | struct block_symbol |
24d864bb DE |
2453 | lookup_symbol_in_static_block (const char *name, |
2454 | const struct block *block, | |
2455 | const domain_enum domain) | |
5f9a71c3 DC |
2456 | { |
2457 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2458 | struct symbol *sym; |
5f9a71c3 | 2459 | |
cc485e62 | 2460 | if (static_block == NULL) |
6640a367 | 2461 | return {}; |
cc485e62 DE |
2462 | |
2463 | if (symbol_lookup_debug) | |
2464 | { | |
2465 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2466 | ||
2467 | fprintf_unfiltered (gdb_stdlog, | |
2468 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2469 | " %s)\n", | |
2470 | name, | |
2471 | host_address_to_string (block), | |
2472 | objfile_debug_name (objfile), | |
2473 | domain_name (domain)); | |
2474 | } | |
2475 | ||
de63c46b PA |
2476 | sym = lookup_symbol_in_block (name, |
2477 | symbol_name_match_type::FULL, | |
2478 | static_block, domain); | |
cc485e62 DE |
2479 | if (symbol_lookup_debug) |
2480 | { | |
2481 | fprintf_unfiltered (gdb_stdlog, | |
2482 | "lookup_symbol_in_static_block (...) = %s\n", | |
2483 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2484 | } | |
d12307c1 | 2485 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2486 | } |
2487 | ||
af3768e9 DE |
2488 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2489 | 1) First search expanded symtabs, and if not found | |
2490 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2491 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2492 | ||
d12307c1 | 2493 | static struct block_symbol |
c32e6a04 | 2494 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2495 | const char *name, const domain_enum domain) |
2496 | { | |
d12307c1 | 2497 | struct block_symbol result; |
af3768e9 | 2498 | |
c32e6a04 CB |
2499 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2500 | ||
cc485e62 DE |
2501 | if (symbol_lookup_debug) |
2502 | { | |
2503 | fprintf_unfiltered (gdb_stdlog, | |
2504 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2505 | objfile_debug_name (objfile), | |
2506 | block_index == GLOBAL_BLOCK | |
2507 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2508 | name, domain_name (domain)); | |
2509 | } | |
2510 | ||
af3768e9 DE |
2511 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2512 | name, domain); | |
d12307c1 | 2513 | if (result.symbol != NULL) |
af3768e9 | 2514 | { |
cc485e62 DE |
2515 | if (symbol_lookup_debug) |
2516 | { | |
2517 | fprintf_unfiltered (gdb_stdlog, | |
2518 | "lookup_symbol_in_objfile (...) = %s" | |
2519 | " (in symtabs)\n", | |
d12307c1 | 2520 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2521 | } |
2522 | return result; | |
af3768e9 DE |
2523 | } |
2524 | ||
cc485e62 DE |
2525 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2526 | name, domain); | |
2527 | if (symbol_lookup_debug) | |
2528 | { | |
2529 | fprintf_unfiltered (gdb_stdlog, | |
2530 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2531 | result.symbol != NULL |
2532 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2533 | : "NULL", |
d12307c1 | 2534 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2535 | } |
af3768e9 DE |
2536 | return result; |
2537 | } | |
2538 | ||
19630284 JB |
2539 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2540 | ||
9aa55206 | 2541 | struct global_or_static_sym_lookup_data |
19630284 JB |
2542 | { |
2543 | /* The name of the symbol we are searching for. */ | |
2544 | const char *name; | |
2545 | ||
2546 | /* The domain to use for our search. */ | |
2547 | domain_enum domain; | |
2548 | ||
9aa55206 CB |
2549 | /* The block index in which to search. */ |
2550 | enum block_enum block_index; | |
2551 | ||
19630284 | 2552 | /* The field where the callback should store the symbol if found. |
d12307c1 PMR |
2553 | It should be initialized to {NULL, NULL} before the search is started. */ |
2554 | struct block_symbol result; | |
19630284 JB |
2555 | }; |
2556 | ||
2557 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
9aa55206 CB |
2558 | It searches by name for a symbol in the block given by BLOCK_INDEX of the |
2559 | given OBJFILE. The arguments for the search are passed via CB_DATA, which | |
2560 | in reality is a pointer to struct global_or_static_sym_lookup_data. */ | |
19630284 JB |
2561 | |
2562 | static int | |
9aa55206 CB |
2563 | lookup_symbol_global_or_static_iterator_cb (struct objfile *objfile, |
2564 | void *cb_data) | |
19630284 | 2565 | { |
9aa55206 CB |
2566 | struct global_or_static_sym_lookup_data *data = |
2567 | (struct global_or_static_sym_lookup_data *) cb_data; | |
19630284 | 2568 | |
d12307c1 PMR |
2569 | gdb_assert (data->result.symbol == NULL |
2570 | && data->result.block == NULL); | |
19630284 | 2571 | |
9aa55206 | 2572 | data->result = lookup_symbol_in_objfile (objfile, data->block_index, |
af3768e9 | 2573 | data->name, data->domain); |
19630284 JB |
2574 | |
2575 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2576 | keep going. */ | |
d12307c1 | 2577 | return (data->result.symbol != NULL); |
19630284 JB |
2578 | } |
2579 | ||
9aa55206 CB |
2580 | /* This function contains the common code of lookup_{global,static}_symbol. |
2581 | OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is | |
2582 | the objfile to start the lookup in. */ | |
5f9a71c3 | 2583 | |
9aa55206 CB |
2584 | static struct block_symbol |
2585 | lookup_global_or_static_symbol (const char *name, | |
2586 | enum block_enum block_index, | |
2587 | struct objfile *objfile, | |
2588 | const domain_enum domain) | |
5f9a71c3 | 2589 | { |
f57d2163 | 2590 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2591 | struct block_symbol result; |
9aa55206 | 2592 | struct global_or_static_sym_lookup_data lookup_data; |
f57d2163 DE |
2593 | struct block_symbol_cache *bsc; |
2594 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2595 | |
9aa55206 CB |
2596 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2597 | gdb_assert (objfile == nullptr || block_index == GLOBAL_BLOCK); | |
f57d2163 DE |
2598 | |
2599 | /* First see if we can find the symbol in the cache. | |
2600 | This works because we use the current objfile to qualify the lookup. */ | |
9aa55206 | 2601 | result = symbol_cache_lookup (cache, objfile, block_index, name, domain, |
d12307c1 PMR |
2602 | &bsc, &slot); |
2603 | if (result.symbol != NULL) | |
f57d2163 | 2604 | { |
d12307c1 | 2605 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2606 | return {}; |
d12307c1 | 2607 | return result; |
f57d2163 DE |
2608 | } |
2609 | ||
626ca2c0 | 2610 | /* Do a global search (of global blocks, heh). */ |
d12307c1 | 2611 | if (result.symbol == NULL) |
f57d2163 DE |
2612 | { |
2613 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2614 | lookup_data.name = name; | |
9aa55206 | 2615 | lookup_data.block_index = block_index; |
f57d2163 DE |
2616 | lookup_data.domain = domain; |
2617 | gdbarch_iterate_over_objfiles_in_search_order | |
2618 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
9aa55206 | 2619 | lookup_symbol_global_or_static_iterator_cb, &lookup_data, objfile); |
d12307c1 | 2620 | result = lookup_data.result; |
f57d2163 | 2621 | } |
6a3ca067 | 2622 | |
d12307c1 PMR |
2623 | if (result.symbol != NULL) |
2624 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2625 | else |
2626 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2627 | ||
d12307c1 | 2628 | return result; |
5f9a71c3 DC |
2629 | } |
2630 | ||
9aa55206 CB |
2631 | /* See symtab.h. */ |
2632 | ||
2633 | struct block_symbol | |
2634 | lookup_static_symbol (const char *name, const domain_enum domain) | |
2635 | { | |
2636 | return lookup_global_or_static_symbol (name, STATIC_BLOCK, nullptr, domain); | |
2637 | } | |
2638 | ||
2639 | /* See symtab.h. */ | |
2640 | ||
2641 | struct block_symbol | |
2642 | lookup_global_symbol (const char *name, | |
2643 | const struct block *block, | |
2644 | const domain_enum domain) | |
2645 | { | |
d3d32391 AB |
2646 | /* If a block was passed in, we want to search the corresponding |
2647 | global block first. This yields "more expected" behavior, and is | |
2648 | needed to support 'FILENAME'::VARIABLE lookups. */ | |
2649 | const struct block *global_block = block_global_block (block); | |
2650 | if (global_block != nullptr) | |
2651 | { | |
2652 | symbol *sym = lookup_symbol_in_block (name, | |
2653 | symbol_name_match_type::FULL, | |
2654 | global_block, domain); | |
2655 | if (sym != nullptr) | |
2656 | return { sym, global_block }; | |
2657 | } | |
2658 | ||
9aa55206 CB |
2659 | struct objfile *objfile = lookup_objfile_from_block (block); |
2660 | return lookup_global_or_static_symbol (name, GLOBAL_BLOCK, objfile, domain); | |
2661 | } | |
2662 | ||
ececd218 | 2663 | bool |
4186eb54 KS |
2664 | symbol_matches_domain (enum language symbol_language, |
2665 | domain_enum symbol_domain, | |
2666 | domain_enum domain) | |
2667 | { | |
2668 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2669 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2670 | if (symbol_language == language_cplus | |
2671 | || symbol_language == language_d | |
65547233 TT |
2672 | || symbol_language == language_ada |
2673 | || symbol_language == language_rust) | |
4186eb54 KS |
2674 | { |
2675 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2676 | && symbol_domain == STRUCT_DOMAIN) | |
ececd218 | 2677 | return true; |
4186eb54 KS |
2678 | } |
2679 | /* For all other languages, strict match is required. */ | |
2680 | return (symbol_domain == domain); | |
2681 | } | |
2682 | ||
cf901d3b | 2683 | /* See symtab.h. */ |
c906108c | 2684 | |
ccefe4c4 TT |
2685 | struct type * |
2686 | lookup_transparent_type (const char *name) | |
c906108c | 2687 | { |
ccefe4c4 TT |
2688 | return current_language->la_lookup_transparent_type (name); |
2689 | } | |
9af17804 | 2690 | |
ccefe4c4 TT |
2691 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2692 | "quick" symbol table functions. */ | |
357e46e7 | 2693 | |
ccefe4c4 | 2694 | static struct type * |
ddbcedf5 CB |
2695 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2696 | enum block_enum block_index, | |
ccefe4c4 TT |
2697 | const char *name) |
2698 | { | |
43f3e411 | 2699 | struct compunit_symtab *cust; |
346d1dfe | 2700 | const struct blockvector *bv; |
582942f4 | 2701 | const struct block *block; |
ccefe4c4 | 2702 | struct symbol *sym; |
c906108c | 2703 | |
ccefe4c4 TT |
2704 | if (!objfile->sf) |
2705 | return NULL; | |
43f3e411 DE |
2706 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2707 | STRUCT_DOMAIN); | |
2708 | if (cust == NULL) | |
ccefe4c4 | 2709 | return NULL; |
c906108c | 2710 | |
43f3e411 | 2711 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2712 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2713 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2714 | block_find_non_opaque_type, NULL); | |
2715 | if (sym == NULL) | |
43f3e411 | 2716 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2717 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2718 | return SYMBOL_TYPE (sym); | |
2719 | } | |
08c23b0d | 2720 | |
b2e2f908 DE |
2721 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2722 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2723 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2724 | ||
2725 | static struct type * | |
ddbcedf5 CB |
2726 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2727 | enum block_enum block_index, | |
b2e2f908 DE |
2728 | const char *name) |
2729 | { | |
b2e2f908 DE |
2730 | const struct blockvector *bv; |
2731 | const struct block *block; | |
2732 | const struct symbol *sym; | |
2733 | ||
b669c953 | 2734 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2735 | { |
2736 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2737 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2738 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2739 | block_find_non_opaque_type, NULL); | |
2740 | if (sym != NULL) | |
2741 | { | |
2742 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2743 | return SYMBOL_TYPE (sym); | |
2744 | } | |
2745 | } | |
c906108c | 2746 | |
ccefe4c4 | 2747 | return NULL; |
b368761e | 2748 | } |
c906108c | 2749 | |
b368761e DC |
2750 | /* The standard implementation of lookup_transparent_type. This code |
2751 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2752 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2753 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2754 | global blocks. */ |
c906108c SS |
2755 | |
2756 | struct type * | |
b368761e | 2757 | basic_lookup_transparent_type (const char *name) |
c906108c | 2758 | { |
ccefe4c4 | 2759 | struct type *t; |
c906108c SS |
2760 | |
2761 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2762 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2763 | of the desired name as a global, then do psymtab-to-symtab |
2764 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2765 | |
2030c079 | 2766 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2767 | { |
2768 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2769 | if (t) | |
2770 | return t; | |
2771 | } | |
c906108c | 2772 | |
2030c079 | 2773 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2774 | { |
2775 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2776 | if (t) | |
2777 | return t; | |
2778 | } | |
c906108c SS |
2779 | |
2780 | /* Now search the static file-level symbols. | |
2781 | Not strictly correct, but more useful than an error. | |
2782 | Do the symtab's first, then | |
c378eb4e | 2783 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2784 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2785 | conversion on the fly and return the found symbol. */ |
c906108c | 2786 | |
2030c079 | 2787 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2788 | { |
2789 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2790 | if (t) | |
2791 | return t; | |
2792 | } | |
c906108c | 2793 | |
2030c079 | 2794 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2795 | { |
2796 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2797 | if (t) | |
2798 | return t; | |
2799 | } | |
ccefe4c4 | 2800 | |
c906108c SS |
2801 | return (struct type *) 0; |
2802 | } | |
2803 | ||
6969f124 | 2804 | /* See symtab.h. */ |
f8eba3c6 | 2805 | |
6969f124 | 2806 | bool |
b5ec771e PA |
2807 | iterate_over_symbols (const struct block *block, |
2808 | const lookup_name_info &name, | |
f8eba3c6 | 2809 | const domain_enum domain, |
14bc53a8 | 2810 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2811 | { |
4eeaa230 DE |
2812 | struct block_iterator iter; |
2813 | struct symbol *sym; | |
f8eba3c6 | 2814 | |
358d6ab3 | 2815 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2816 | { |
4186eb54 KS |
2817 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2818 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2819 | { |
7e41c8db KS |
2820 | struct block_symbol block_sym = {sym, block}; |
2821 | ||
2822 | if (!callback (&block_sym)) | |
6969f124 | 2823 | return false; |
f8eba3c6 | 2824 | } |
f8eba3c6 | 2825 | } |
6969f124 | 2826 | return true; |
f8eba3c6 TT |
2827 | } |
2828 | ||
6a3dbf1b TT |
2829 | /* See symtab.h. */ |
2830 | ||
2831 | bool | |
2832 | iterate_over_symbols_terminated | |
2833 | (const struct block *block, | |
2834 | const lookup_name_info &name, | |
2835 | const domain_enum domain, | |
2836 | gdb::function_view<symbol_found_callback_ftype> callback) | |
2837 | { | |
2838 | if (!iterate_over_symbols (block, name, domain, callback)) | |
2839 | return false; | |
2840 | struct block_symbol block_sym = {nullptr, block}; | |
2841 | return callback (&block_sym); | |
2842 | } | |
2843 | ||
43f3e411 DE |
2844 | /* Find the compunit symtab associated with PC and SECTION. |
2845 | This will read in debug info as necessary. */ | |
c906108c | 2846 | |
43f3e411 DE |
2847 | struct compunit_symtab * |
2848 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2849 | { |
43f3e411 | 2850 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2851 | CORE_ADDR distance = 0; |
77e371c0 | 2852 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2853 | |
2854 | /* If we know that this is not a text address, return failure. This is | |
2855 | necessary because we loop based on the block's high and low code | |
2856 | addresses, which do not include the data ranges, and because | |
2857 | we call find_pc_sect_psymtab which has a similar restriction based | |
2858 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2859 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2860 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2861 | return NULL; |
c906108c SS |
2862 | |
2863 | /* Search all symtabs for the one whose file contains our address, and which | |
2864 | is the smallest of all the ones containing the address. This is designed | |
2865 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2866 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2867 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2868 | ||
2869 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2870 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2871 | been read in already via the dependency mechanism. |
2872 | It might be swifter to create several symtabs with the same name | |
2873 | like xcoff does (I'm not sure). | |
2874 | ||
2875 | It also happens for objfiles that have their functions reordered. | |
2876 | For these, the symtab we are looking for is not necessarily read in. */ | |
2877 | ||
2030c079 | 2878 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2879 | { |
b669c953 | 2880 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2881 | { |
582942f4 | 2882 | const struct block *b; |
d8aeb77f | 2883 | const struct blockvector *bv; |
43f3e411 | 2884 | |
d8aeb77f TT |
2885 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2886 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2887 | |
d8aeb77f TT |
2888 | if (BLOCK_START (b) <= pc |
2889 | && BLOCK_END (b) > pc | |
2890 | && (distance == 0 | |
2891 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2892 | { | |
2893 | /* For an objfile that has its functions reordered, | |
2894 | find_pc_psymtab will find the proper partial symbol table | |
2895 | and we simply return its corresponding symtab. */ | |
2896 | /* In order to better support objfiles that contain both | |
2897 | stabs and coff debugging info, we continue on if a psymtab | |
2898 | can't be found. */ | |
2899 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2900 | { | |
2901 | struct compunit_symtab *result; | |
2902 | ||
2903 | result | |
2904 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2905 | msymbol, | |
2906 | pc, | |
2907 | section, | |
2908 | 0); | |
2909 | if (result != NULL) | |
2910 | return result; | |
2911 | } | |
2912 | if (section != 0) | |
2913 | { | |
2914 | struct block_iterator iter; | |
2915 | struct symbol *sym = NULL; | |
c906108c | 2916 | |
d8aeb77f TT |
2917 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2918 | { | |
2919 | fixup_symbol_section (sym, obj_file); | |
2920 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2921 | sym), | |
2922 | section)) | |
2923 | break; | |
2924 | } | |
2925 | if (sym == NULL) | |
2926 | continue; /* No symbol in this symtab matches | |
2927 | section. */ | |
2928 | } | |
2929 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2930 | best_cust = cust; | |
2931 | } | |
2932 | } | |
2933 | } | |
c906108c | 2934 | |
43f3e411 DE |
2935 | if (best_cust != NULL) |
2936 | return best_cust; | |
c906108c | 2937 | |
072cabfe DE |
2938 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2939 | ||
2030c079 | 2940 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2941 | { |
2942 | struct compunit_symtab *result; | |
2943 | ||
2944 | if (!objf->sf) | |
2945 | continue; | |
2946 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2947 | msymbol, | |
2948 | pc, section, | |
2949 | 1); | |
2950 | if (result != NULL) | |
2951 | return result; | |
2952 | } | |
ccefe4c4 TT |
2953 | |
2954 | return NULL; | |
c906108c SS |
2955 | } |
2956 | ||
43f3e411 DE |
2957 | /* Find the compunit symtab associated with PC. |
2958 | This will read in debug info as necessary. | |
2959 | Backward compatibility, no section. */ | |
c906108c | 2960 | |
43f3e411 DE |
2961 | struct compunit_symtab * |
2962 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2963 | { |
43f3e411 | 2964 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2965 | } |
71a3c369 TT |
2966 | |
2967 | /* See symtab.h. */ | |
2968 | ||
2969 | struct symbol * | |
2970 | find_symbol_at_address (CORE_ADDR address) | |
2971 | { | |
2030c079 | 2972 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2973 | { |
2974 | if (objfile->sf == NULL | |
2975 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
2976 | continue; | |
71a3c369 | 2977 | |
aed57c53 TT |
2978 | struct compunit_symtab *symtab |
2979 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
2980 | if (symtab != NULL) | |
2981 | { | |
2982 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 2983 | |
aed57c53 | 2984 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 2985 | { |
582942f4 | 2986 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
2987 | struct block_iterator iter; |
2988 | struct symbol *sym; | |
2989 | ||
2990 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
2991 | { | |
2992 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
2993 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
2994 | return sym; | |
2995 | } | |
71a3c369 | 2996 | } |
aed57c53 TT |
2997 | } |
2998 | } | |
71a3c369 TT |
2999 | |
3000 | return NULL; | |
3001 | } | |
3002 | ||
c906108c | 3003 | \f |
c5aa993b | 3004 | |
7e73cedf | 3005 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3006 | Return a structure containing a symtab pointer, a line number, |
3007 | and a pc range for the entire source line. | |
3008 | The value's .pc field is NOT the specified pc. | |
3009 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3010 | use the line that ends there. Otherwise, in that case, the line | |
3011 | that begins there is used. */ | |
3012 | ||
3013 | /* The big complication here is that a line may start in one file, and end just | |
3014 | before the start of another file. This usually occurs when you #include | |
3015 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3016 | range, we must search all symtabs associated with this compilation unit, and | |
3017 | find the one whose first PC is closer than that of the next line in this | |
3018 | symtab. */ | |
3019 | ||
c906108c | 3020 | struct symtab_and_line |
714835d5 | 3021 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3022 | { |
43f3e411 | 3023 | struct compunit_symtab *cust; |
52f0bd74 AC |
3024 | struct linetable *l; |
3025 | int len; | |
52f0bd74 | 3026 | struct linetable_entry *item; |
346d1dfe | 3027 | const struct blockvector *bv; |
7cbd4a93 | 3028 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3029 | |
3030 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3031 | ||
3032 | struct linetable_entry *best = NULL; | |
3033 | CORE_ADDR best_end = 0; | |
3034 | struct symtab *best_symtab = 0; | |
3035 | ||
3036 | /* Store here the first line number | |
3037 | of a file which contains the line at the smallest pc after PC. | |
3038 | If we don't find a line whose range contains PC, | |
3039 | we will use a line one less than this, | |
3040 | with a range from the start of that file to the first line's pc. */ | |
3041 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3042 | |
3043 | /* Info on best line seen in this file. */ | |
3044 | ||
3045 | struct linetable_entry *prev; | |
3046 | ||
3047 | /* If this pc is not from the current frame, | |
3048 | it is the address of the end of a call instruction. | |
3049 | Quite likely that is the start of the following statement. | |
3050 | But what we want is the statement containing the instruction. | |
3051 | Fudge the pc to make sure we get that. */ | |
3052 | ||
b77b1eb7 JB |
3053 | /* It's tempting to assume that, if we can't find debugging info for |
3054 | any function enclosing PC, that we shouldn't search for line | |
3055 | number info, either. However, GAS can emit line number info for | |
3056 | assembly files --- very helpful when debugging hand-written | |
3057 | assembly code. In such a case, we'd have no debug info for the | |
3058 | function, but we would have line info. */ | |
648f4f79 | 3059 | |
c906108c SS |
3060 | if (notcurrent) |
3061 | pc -= 1; | |
3062 | ||
c5aa993b | 3063 | /* elz: added this because this function returned the wrong |
c906108c | 3064 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3065 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3066 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3067 | taken to be the one of the line before the pc. */ |
3068 | ||
c906108c | 3069 | /* RT: Further explanation: |
c5aa993b | 3070 | |
c906108c SS |
3071 | * We have stubs (trampolines) inserted between procedures. |
3072 | * | |
3073 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3074 | * exists in the main image. | |
3075 | * | |
3076 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3077 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3078 | * the others appear as text. E.g.: |
3079 | * | |
9af17804 | 3080 | * Minimal symbol table for main image |
c906108c SS |
3081 | * main: code for main (text symbol) |
3082 | * shr1: stub (trampoline symbol) | |
3083 | * foo: code for foo (text symbol) | |
3084 | * ... | |
3085 | * Minimal symbol table for "shr1" image: | |
3086 | * ... | |
3087 | * shr1: code for shr1 (text symbol) | |
3088 | * ... | |
3089 | * | |
3090 | * So the code below is trying to detect if we are in the stub | |
3091 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3092 | * and if found, do the symbolization from the real-code address | |
3093 | * rather than the stub address. | |
3094 | * | |
3095 | * Assumptions being made about the minimal symbol table: | |
3096 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3097 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3098 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3099 | * symbol (the "foo" text symbol for example) and will not |
3100 | * return the trampoline. | |
3101 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3102 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3103 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3104 | * check for the address being the same, to avoid an |
3105 | * infinite recursion. | |
3106 | */ | |
c5aa993b | 3107 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3108 | if (msymbol.minsym != NULL) |
3109 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3110 | { |
77e371c0 | 3111 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3112 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3113 | NULL); |
3114 | ||
3115 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3116 | /* I eliminated this warning since it is coming out |
3117 | * in the following situation: | |
3118 | * gdb shmain // test program with shared libraries | |
3119 | * (gdb) break shr1 // function in shared lib | |
3120 | * Warning: In stub for ... | |
9af17804 | 3121 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3122 | * so of course we can't find the real func/line info, |
3123 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3124 | * So I commented out the warning. RT */ |
3e43a32a | 3125 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3126 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3127 | ; | |
c5aa993b | 3128 | /* fall through */ |
77e371c0 TT |
3129 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3130 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3131 | /* Avoid infinite recursion */ |
c378eb4e | 3132 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3133 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3134 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3135 | ; | |
c5aa993b JM |
3136 | /* fall through */ |
3137 | else | |
77e371c0 | 3138 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3139 | } |
c906108c | 3140 | |
51abb421 PA |
3141 | symtab_and_line val; |
3142 | val.pspace = current_program_space; | |
c906108c | 3143 | |
43f3e411 DE |
3144 | cust = find_pc_sect_compunit_symtab (pc, section); |
3145 | if (cust == NULL) | |
c906108c | 3146 | { |
c378eb4e | 3147 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3148 | if (notcurrent) |
3149 | pc++; | |
3150 | val.pc = pc; | |
3151 | return val; | |
3152 | } | |
3153 | ||
43f3e411 | 3154 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3155 | |
3156 | /* Look at all the symtabs that share this blockvector. | |
3157 | They all have the same apriori range, that we found was right; | |
3158 | but they have different line tables. */ | |
3159 | ||
5accd1a0 | 3160 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3161 | { |
3162 | /* Find the best line in this symtab. */ | |
43f3e411 | 3163 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3164 | if (!l) |
c5aa993b | 3165 | continue; |
c906108c SS |
3166 | len = l->nitems; |
3167 | if (len <= 0) | |
3168 | { | |
3169 | /* I think len can be zero if the symtab lacks line numbers | |
3170 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3171 | I'm not sure which, and maybe it depends on the symbol | |
3172 | reader). */ | |
3173 | continue; | |
3174 | } | |
3175 | ||
3176 | prev = NULL; | |
c378eb4e | 3177 | item = l->item; /* Get first line info. */ |
c906108c SS |
3178 | |
3179 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3180 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3181 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3182 | alt = item; |
c906108c | 3183 | |
b926417a | 3184 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3185 | const struct linetable_entry & lhs)->bool |
3186 | { | |
b926417a | 3187 | return comp_pc < lhs.pc; |
7cbe16e9 | 3188 | }; |
c906108c | 3189 | |
7cbe16e9 SR |
3190 | struct linetable_entry *first = item; |
3191 | struct linetable_entry *last = item + len; | |
3192 | item = std::upper_bound (first, last, pc, pc_compare); | |
3193 | if (item != first) | |
3194 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3195 | |
3196 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3197 | item points at the next line. If we ran off the end of the linetable |
3198 | (pc >= start of the last line), then prev == item. If pc < start of | |
3199 | the first line, prev will not be set. */ | |
c906108c SS |
3200 | |
3201 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3202 | If so, record this file, and its best line, as best so far. Don't |
3203 | save prev if it represents the end of a function (i.e. line number | |
3204 | 0) instead of a real line. */ | |
c906108c | 3205 | |
083ae935 | 3206 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3207 | { |
3208 | best = prev; | |
43f3e411 | 3209 | best_symtab = iter_s; |
25d53da1 KB |
3210 | |
3211 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3212 | if (best_end <= best->pc) | |
3213 | best_end = 0; | |
c906108c | 3214 | } |
25d53da1 KB |
3215 | |
3216 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3217 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3218 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3219 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3220 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3221 | best_end = item->pc; |
c906108c SS |
3222 | } |
3223 | ||
3224 | if (!best_symtab) | |
3225 | { | |
e86e87f7 DJ |
3226 | /* If we didn't find any line number info, just return zeros. |
3227 | We used to return alt->line - 1 here, but that could be | |
3228 | anywhere; if we don't have line number info for this PC, | |
3229 | don't make some up. */ | |
3230 | val.pc = pc; | |
c906108c | 3231 | } |
e8717518 FF |
3232 | else if (best->line == 0) |
3233 | { | |
3234 | /* If our best fit is in a range of PC's for which no line | |
3235 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3236 | find any valid line information. */ |
e8717518 FF |
3237 | val.pc = pc; |
3238 | } | |
c906108c SS |
3239 | else |
3240 | { | |
3241 | val.symtab = best_symtab; | |
3242 | val.line = best->line; | |
3243 | val.pc = best->pc; | |
3244 | if (best_end && (!alt || best_end < alt->pc)) | |
3245 | val.end = best_end; | |
3246 | else if (alt) | |
3247 | val.end = alt->pc; | |
3248 | else | |
3249 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3250 | } | |
3251 | val.section = section; | |
3252 | return val; | |
3253 | } | |
3254 | ||
c378eb4e | 3255 | /* Backward compatibility (no section). */ |
c906108c SS |
3256 | |
3257 | struct symtab_and_line | |
fba45db2 | 3258 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3259 | { |
714835d5 | 3260 | struct obj_section *section; |
c906108c SS |
3261 | |
3262 | section = find_pc_overlay (pc); | |
3263 | if (pc_in_unmapped_range (pc, section)) | |
3264 | pc = overlay_mapped_address (pc, section); | |
3265 | return find_pc_sect_line (pc, section, notcurrent); | |
3266 | } | |
34248c3a DE |
3267 | |
3268 | /* See symtab.h. */ | |
3269 | ||
3270 | struct symtab * | |
3271 | find_pc_line_symtab (CORE_ADDR pc) | |
3272 | { | |
3273 | struct symtab_and_line sal; | |
3274 | ||
3275 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3276 | There are currently no callers that ever pass non-zero. */ | |
3277 | sal = find_pc_line (pc, 0); | |
3278 | return sal.symtab; | |
3279 | } | |
c906108c | 3280 | \f |
c906108c SS |
3281 | /* Find line number LINE in any symtab whose name is the same as |
3282 | SYMTAB. | |
3283 | ||
3284 | If found, return the symtab that contains the linetable in which it was | |
3285 | found, set *INDEX to the index in the linetable of the best entry | |
ececd218 | 3286 | found, and set *EXACT_MATCH to true if the value returned is an |
c906108c SS |
3287 | exact match. |
3288 | ||
3289 | If not found, return NULL. */ | |
3290 | ||
50641945 | 3291 | struct symtab * |
5accd1a0 | 3292 | find_line_symtab (struct symtab *sym_tab, int line, |
ececd218 | 3293 | int *index, bool *exact_match) |
c906108c | 3294 | { |
6f43c46f | 3295 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3296 | |
3297 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3298 | so far seen. */ | |
3299 | ||
3300 | int best_index; | |
3301 | struct linetable *best_linetable; | |
3302 | struct symtab *best_symtab; | |
3303 | ||
3304 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3305 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3306 | best_symtab = sym_tab; | |
f8eba3c6 | 3307 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3308 | if (best_index < 0 || !exact) |
3309 | { | |
3310 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3311 | another symtab with the same name. In the case of xcoff, |
3312 | multiple csects for one source file (produced by IBM's FORTRAN | |
3313 | compiler) produce multiple symtabs (this is unavoidable | |
3314 | assuming csects can be at arbitrary places in memory and that | |
3315 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3316 | |
3317 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3318 | or 0 if none has been seen so far. |
3319 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3320 | int best; |
3321 | ||
c906108c SS |
3322 | if (best_index >= 0) |
3323 | best = best_linetable->item[best_index].line; | |
3324 | else | |
3325 | best = 0; | |
3326 | ||
2030c079 | 3327 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3328 | { |
3329 | if (objfile->sf) | |
3330 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3331 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3332 | } |
51432cca | 3333 | |
2030c079 | 3334 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3335 | { |
b669c953 | 3336 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3337 | { |
3338 | for (symtab *s : compunit_filetabs (cu)) | |
3339 | { | |
3340 | struct linetable *l; | |
3341 | int ind; | |
3342 | ||
3343 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3344 | continue; | |
3345 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3346 | symtab_to_fullname (s)) != 0) | |
3347 | continue; | |
3348 | l = SYMTAB_LINETABLE (s); | |
3349 | ind = find_line_common (l, line, &exact, 0); | |
3350 | if (ind >= 0) | |
3351 | { | |
3352 | if (exact) | |
3353 | { | |
3354 | best_index = ind; | |
3355 | best_linetable = l; | |
3356 | best_symtab = s; | |
3357 | goto done; | |
3358 | } | |
3359 | if (best == 0 || l->item[ind].line < best) | |
3360 | { | |
3361 | best = l->item[ind].line; | |
3362 | best_index = ind; | |
3363 | best_linetable = l; | |
3364 | best_symtab = s; | |
3365 | } | |
3366 | } | |
3367 | } | |
3368 | } | |
3369 | } | |
c906108c | 3370 | } |
c5aa993b | 3371 | done: |
c906108c SS |
3372 | if (best_index < 0) |
3373 | return NULL; | |
3374 | ||
3375 | if (index) | |
3376 | *index = best_index; | |
3377 | if (exact_match) | |
ececd218 | 3378 | *exact_match = (exact != 0); |
c906108c SS |
3379 | |
3380 | return best_symtab; | |
3381 | } | |
f8eba3c6 TT |
3382 | |
3383 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3384 | exactly match LINE. Returns an empty vector if there are no exact |
3385 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3386 | |
67d89901 | 3387 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3388 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3389 | struct linetable_entry **best_item) | |
3390 | { | |
c656bca5 | 3391 | int start = 0; |
67d89901 | 3392 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3393 | |
3394 | /* First, collect all the PCs that are at this line. */ | |
3395 | while (1) | |
3396 | { | |
3397 | int was_exact; | |
3398 | int idx; | |
3399 | ||
8435453b DE |
3400 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3401 | start); | |
f8eba3c6 TT |
3402 | if (idx < 0) |
3403 | break; | |
3404 | ||
3405 | if (!was_exact) | |
3406 | { | |
8435453b | 3407 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3408 | |
3409 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3410 | *best_item = item; | |
3411 | ||
3412 | break; | |
3413 | } | |
3414 | ||
67d89901 | 3415 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3416 | start = idx + 1; |
3417 | } | |
3418 | ||
3419 | return result; | |
3420 | } | |
3421 | ||
c906108c SS |
3422 | \f |
3423 | /* Set the PC value for a given source file and line number and return true. | |
ececd218 | 3424 | Returns false for invalid line number (and sets the PC to 0). |
c906108c SS |
3425 | The source file is specified with a struct symtab. */ |
3426 | ||
ececd218 | 3427 | bool |
fba45db2 | 3428 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3429 | { |
3430 | struct linetable *l; | |
3431 | int ind; | |
3432 | ||
3433 | *pc = 0; | |
3434 | if (symtab == 0) | |
ececd218 | 3435 | return false; |
c906108c SS |
3436 | |
3437 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3438 | if (symtab != NULL) | |
3439 | { | |
8435453b | 3440 | l = SYMTAB_LINETABLE (symtab); |
c906108c | 3441 | *pc = l->item[ind].pc; |
ececd218 | 3442 | return true; |
c906108c SS |
3443 | } |
3444 | else | |
ececd218 | 3445 | return false; |
c906108c SS |
3446 | } |
3447 | ||
3448 | /* Find the range of pc values in a line. | |
3449 | Store the starting pc of the line into *STARTPTR | |
3450 | and the ending pc (start of next line) into *ENDPTR. | |
ececd218 CB |
3451 | Returns true to indicate success. |
3452 | Returns false if could not find the specified line. */ | |
c906108c | 3453 | |
ececd218 | 3454 | bool |
fba45db2 KB |
3455 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3456 | CORE_ADDR *endptr) | |
c906108c SS |
3457 | { |
3458 | CORE_ADDR startaddr; | |
3459 | struct symtab_and_line found_sal; | |
3460 | ||
3461 | startaddr = sal.pc; | |
c5aa993b | 3462 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
ececd218 | 3463 | return false; |
c906108c SS |
3464 | |
3465 | /* This whole function is based on address. For example, if line 10 has | |
3466 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3467 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3468 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3469 | This also insures that we never give a range like "starts at 0x134 | |
3470 | and ends at 0x12c". */ | |
3471 | ||
3472 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3473 | if (found_sal.line != sal.line) | |
3474 | { | |
3475 | /* The specified line (sal) has zero bytes. */ | |
3476 | *startptr = found_sal.pc; | |
3477 | *endptr = found_sal.pc; | |
3478 | } | |
3479 | else | |
3480 | { | |
3481 | *startptr = found_sal.pc; | |
3482 | *endptr = found_sal.end; | |
3483 | } | |
ececd218 | 3484 | return true; |
c906108c SS |
3485 | } |
3486 | ||
3487 | /* Given a line table and a line number, return the index into the line | |
3488 | table for the pc of the nearest line whose number is >= the specified one. | |
3489 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3490 | START is the index at which to start searching the line table. |
c906108c SS |
3491 | |
3492 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3493 | ||
3494 | static int | |
aa1ee363 | 3495 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3496 | int *exact_match, int start) |
c906108c | 3497 | { |
52f0bd74 AC |
3498 | int i; |
3499 | int len; | |
c906108c SS |
3500 | |
3501 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3502 | or 0 if none has been seen so far. | |
3503 | BEST_INDEX identifies the item for it. */ | |
3504 | ||
3505 | int best_index = -1; | |
3506 | int best = 0; | |
3507 | ||
b7589f7d DJ |
3508 | *exact_match = 0; |
3509 | ||
c906108c SS |
3510 | if (lineno <= 0) |
3511 | return -1; | |
3512 | if (l == 0) | |
3513 | return -1; | |
3514 | ||
3515 | len = l->nitems; | |
f8eba3c6 | 3516 | for (i = start; i < len; i++) |
c906108c | 3517 | { |
aa1ee363 | 3518 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3519 | |
3520 | if (item->line == lineno) | |
3521 | { | |
3522 | /* Return the first (lowest address) entry which matches. */ | |
3523 | *exact_match = 1; | |
3524 | return i; | |
3525 | } | |
3526 | ||
3527 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3528 | { | |
3529 | best = item->line; | |
3530 | best_index = i; | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3535 | return best_index; |
3536 | } | |
3537 | ||
ececd218 | 3538 | bool |
fba45db2 | 3539 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3540 | { |
3541 | struct symtab_and_line sal; | |
433759f7 | 3542 | |
c906108c SS |
3543 | sal = find_pc_line (pc, 0); |
3544 | *startptr = sal.pc; | |
3545 | *endptr = sal.end; | |
3546 | return sal.symtab != 0; | |
3547 | } | |
3548 | ||
cd2bb709 PA |
3549 | /* Helper for find_function_start_sal. Does most of the work, except |
3550 | setting the sal's symbol. */ | |
aab2f208 | 3551 | |
cd2bb709 PA |
3552 | static symtab_and_line |
3553 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3554 | bool funfirstline) | |
aab2f208 | 3555 | { |
42ddae10 | 3556 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3557 | |
6e22494e JK |
3558 | if (funfirstline && sal.symtab != NULL |
3559 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3560 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3561 | { | |
42ddae10 | 3562 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3563 | |
42ddae10 | 3564 | sal.pc = func_addr; |
141c5cc4 JK |
3565 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3566 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3567 | return sal; |
3568 | } | |
3569 | ||
aab2f208 | 3570 | /* We always should have a line for the function start address. |
42ddae10 | 3571 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3572 | just the PC and hope that skip_prologue_sal (if requested) |
3573 | can find a line number for after the prologue. */ | |
42ddae10 | 3574 | if (sal.pc < func_addr) |
aab2f208 | 3575 | { |
51abb421 | 3576 | sal = {}; |
aab2f208 | 3577 | sal.pspace = current_program_space; |
42ddae10 | 3578 | sal.pc = func_addr; |
08be3fe3 | 3579 | sal.section = section; |
aab2f208 DE |
3580 | } |
3581 | ||
3582 | if (funfirstline) | |
3583 | skip_prologue_sal (&sal); | |
3584 | ||
3585 | return sal; | |
3586 | } | |
3587 | ||
42ddae10 PA |
3588 | /* See symtab.h. */ |
3589 | ||
cd2bb709 PA |
3590 | symtab_and_line |
3591 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3592 | bool funfirstline) | |
3593 | { | |
3594 | symtab_and_line sal | |
3595 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3596 | ||
3597 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3598 | the symtab and linenumber, but not a symbol. Fill in the | |
3599 | function symbol too. */ | |
3600 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3601 | ||
3602 | return sal; | |
3603 | } | |
3604 | ||
3605 | /* See symtab.h. */ | |
3606 | ||
42ddae10 PA |
3607 | symtab_and_line |
3608 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3609 | { | |
3610 | fixup_symbol_section (sym, NULL); | |
3611 | symtab_and_line sal | |
2b1ffcfd | 3612 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3613 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3614 | funfirstline); | |
42ddae10 PA |
3615 | sal.symbol = sym; |
3616 | return sal; | |
3617 | } | |
3618 | ||
3619 | ||
8c7a1ee8 EZ |
3620 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3621 | address for that function that has an entry in SYMTAB's line info | |
3622 | table. If such an entry cannot be found, return FUNC_ADDR | |
3623 | unaltered. */ | |
eca864fe | 3624 | |
70221824 | 3625 | static CORE_ADDR |
8c7a1ee8 EZ |
3626 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3627 | { | |
3628 | CORE_ADDR func_start, func_end; | |
3629 | struct linetable *l; | |
952a6d41 | 3630 | int i; |
8c7a1ee8 EZ |
3631 | |
3632 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3633 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3634 | if (l == NULL) |
3635 | return func_addr; | |
3636 | ||
3637 | /* Get the range for the function's PC values, or give up if we | |
3638 | cannot, for some reason. */ | |
3639 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3640 | return func_addr; | |
3641 | ||
3642 | /* Linetable entries are ordered by PC values, see the commentary in | |
3643 | symtab.h where `struct linetable' is defined. Thus, the first | |
3644 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3645 | address we are looking for. */ | |
3646 | for (i = 0; i < l->nitems; i++) | |
3647 | { | |
3648 | struct linetable_entry *item = &(l->item[i]); | |
3649 | ||
3650 | /* Don't use line numbers of zero, they mark special entries in | |
3651 | the table. See the commentary on symtab.h before the | |
3652 | definition of struct linetable. */ | |
3653 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3654 | return item->pc; | |
3655 | } | |
3656 | ||
3657 | return func_addr; | |
3658 | } | |
3659 | ||
059acae7 UW |
3660 | /* Adjust SAL to the first instruction past the function prologue. |
3661 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3662 | If the line number was explicitly specified then the SAL can still be |
3663 | updated, unless the language for SAL is assembler, in which case the SAL | |
3664 | will be left unchanged. | |
3665 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3666 | |
059acae7 UW |
3667 | void |
3668 | skip_prologue_sal (struct symtab_and_line *sal) | |
3669 | { | |
3670 | struct symbol *sym; | |
3671 | struct symtab_and_line start_sal; | |
8be455d7 | 3672 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3673 | struct obj_section *section; |
3674 | const char *name; | |
3675 | struct objfile *objfile; | |
3676 | struct gdbarch *gdbarch; | |
3977b71f | 3677 | const struct block *b, *function_block; |
8be455d7 | 3678 | int force_skip, skip; |
c906108c | 3679 | |
a4b411d6 | 3680 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3681 | if (sal->explicit_pc) |
3682 | return; | |
6c95b8df | 3683 | |
5b0e2db4 AB |
3684 | /* In assembly code, if the user asks for a specific line then we should |
3685 | not adjust the SAL. The user already has instruction level | |
3686 | visibility in this case, so selecting a line other than one requested | |
3687 | is likely to be the wrong choice. */ | |
3688 | if (sal->symtab != nullptr | |
3689 | && sal->explicit_line | |
3690 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3691 | return; | |
3692 | ||
5ed8105e PA |
3693 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3694 | ||
059acae7 | 3695 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3696 | |
059acae7 UW |
3697 | sym = find_pc_sect_function (sal->pc, sal->section); |
3698 | if (sym != NULL) | |
bccdca4a | 3699 | { |
059acae7 UW |
3700 | fixup_symbol_section (sym, NULL); |
3701 | ||
08be3fe3 | 3702 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3703 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3704 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3705 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3706 | } |
059acae7 UW |
3707 | else |
3708 | { | |
7c7b6655 TT |
3709 | struct bound_minimal_symbol msymbol |
3710 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3711 | |
7c7b6655 | 3712 | if (msymbol.minsym == NULL) |
5ed8105e | 3713 | return; |
059acae7 | 3714 | |
7c7b6655 | 3715 | objfile = msymbol.objfile; |
77e371c0 | 3716 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3717 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3718 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3719 | } |
3720 | ||
3721 | gdbarch = get_objfile_arch (objfile); | |
3722 | ||
8be455d7 JK |
3723 | /* Process the prologue in two passes. In the first pass try to skip the |
3724 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3725 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3726 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3727 | |
8be455d7 JK |
3728 | skip = 1; |
3729 | force_skip = 1; | |
059acae7 | 3730 | |
8be455d7 JK |
3731 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3732 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3733 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3734 | if (sym != NULL |
3735 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3736 | force_skip = 0; |
059acae7 | 3737 | |
8be455d7 JK |
3738 | saved_pc = pc; |
3739 | do | |
c906108c | 3740 | { |
8be455d7 | 3741 | pc = saved_pc; |
4309257c | 3742 | |
8be455d7 JK |
3743 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3744 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3745 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3746 | pc = overlay_unmapped_address (pc, section); | |
3747 | ||
3748 | /* Skip "first line" of function (which is actually its prologue). */ | |
3749 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3750 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3751 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3752 | if (skip) |
46a62268 | 3753 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3754 | |
3755 | /* For overlays, map pc back into its mapped VMA range. */ | |
3756 | pc = overlay_mapped_address (pc, section); | |
3757 | ||
3758 | /* Calculate line number. */ | |
059acae7 | 3759 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3760 | |
3761 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3762 | line is still part of the same function. */ | |
3763 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3764 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3765 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3766 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3767 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3768 | { |
3769 | /* First pc of next line */ | |
3770 | pc = start_sal.end; | |
3771 | /* Recalculate the line number (might not be N+1). */ | |
3772 | start_sal = find_pc_sect_line (pc, section, 0); | |
3773 | } | |
3774 | ||
3775 | /* On targets with executable formats that don't have a concept of | |
3776 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3777 | to `__main' in `main' between the prologue and before user | |
3778 | code. */ | |
3779 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3780 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3781 | { |
3782 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3783 | /* Recalculate the line number (might not be N+1). */ | |
3784 | start_sal = find_pc_sect_line (pc, section, 0); | |
3785 | force_skip = 1; | |
3786 | } | |
4309257c | 3787 | } |
8be455d7 | 3788 | while (!force_skip && skip--); |
4309257c | 3789 | |
8c7a1ee8 EZ |
3790 | /* If we still don't have a valid source line, try to find the first |
3791 | PC in the lineinfo table that belongs to the same function. This | |
3792 | happens with COFF debug info, which does not seem to have an | |
3793 | entry in lineinfo table for the code after the prologue which has | |
3794 | no direct relation to source. For example, this was found to be | |
3795 | the case with the DJGPP target using "gcc -gcoff" when the | |
3796 | compiler inserted code after the prologue to make sure the stack | |
3797 | is aligned. */ | |
8be455d7 | 3798 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3799 | { |
08be3fe3 | 3800 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3801 | /* Recalculate the line number. */ |
059acae7 | 3802 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3803 | } |
3804 | ||
059acae7 UW |
3805 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3806 | forward SAL to the end of the prologue. */ | |
3807 | if (sal->pc >= pc) | |
3808 | return; | |
3809 | ||
3810 | sal->pc = pc; | |
3811 | sal->section = section; | |
059acae7 UW |
3812 | sal->symtab = start_sal.symtab; |
3813 | sal->line = start_sal.line; | |
3814 | sal->end = start_sal.end; | |
c906108c | 3815 | |
edb3359d DJ |
3816 | /* Check if we are now inside an inlined function. If we can, |
3817 | use the call site of the function instead. */ | |
059acae7 | 3818 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3819 | function_block = NULL; |
3820 | while (b != NULL) | |
3821 | { | |
3822 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3823 | function_block = b; | |
3824 | else if (BLOCK_FUNCTION (b) != NULL) | |
3825 | break; | |
3826 | b = BLOCK_SUPERBLOCK (b); | |
3827 | } | |
3828 | if (function_block != NULL | |
3829 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3830 | { | |
059acae7 | 3831 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3832 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3833 | } |
c906108c | 3834 | } |
50641945 | 3835 | |
f1f58506 DE |
3836 | /* Given PC at the function's start address, attempt to find the |
3837 | prologue end using SAL information. Return zero if the skip fails. | |
3838 | ||
3839 | A non-optimized prologue traditionally has one SAL for the function | |
3840 | and a second for the function body. A single line function has | |
3841 | them both pointing at the same line. | |
3842 | ||
3843 | An optimized prologue is similar but the prologue may contain | |
3844 | instructions (SALs) from the instruction body. Need to skip those | |
3845 | while not getting into the function body. | |
3846 | ||
3847 | The functions end point and an increasing SAL line are used as | |
3848 | indicators of the prologue's endpoint. | |
3849 | ||
3850 | This code is based on the function refine_prologue_limit | |
3851 | (found in ia64). */ | |
3852 | ||
3853 | CORE_ADDR | |
3854 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3855 | { | |
3856 | struct symtab_and_line prologue_sal; | |
3857 | CORE_ADDR start_pc; | |
3858 | CORE_ADDR end_pc; | |
3859 | const struct block *bl; | |
3860 | ||
3861 | /* Get an initial range for the function. */ | |
3862 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3863 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3864 | ||
3865 | prologue_sal = find_pc_line (start_pc, 0); | |
3866 | if (prologue_sal.line != 0) | |
3867 | { | |
3868 | /* For languages other than assembly, treat two consecutive line | |
3869 | entries at the same address as a zero-instruction prologue. | |
3870 | The GNU assembler emits separate line notes for each instruction | |
3871 | in a multi-instruction macro, but compilers generally will not | |
3872 | do this. */ | |
3873 | if (prologue_sal.symtab->language != language_asm) | |
3874 | { | |
8435453b | 3875 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3876 | int idx = 0; |
3877 | ||
3878 | /* Skip any earlier lines, and any end-of-sequence marker | |
3879 | from a previous function. */ | |
3880 | while (linetable->item[idx].pc != prologue_sal.pc | |
3881 | || linetable->item[idx].line == 0) | |
3882 | idx++; | |
3883 | ||
3884 | if (idx+1 < linetable->nitems | |
3885 | && linetable->item[idx+1].line != 0 | |
3886 | && linetable->item[idx+1].pc == start_pc) | |
3887 | return start_pc; | |
3888 | } | |
3889 | ||
3890 | /* If there is only one sal that covers the entire function, | |
3891 | then it is probably a single line function, like | |
3892 | "foo(){}". */ | |
3893 | if (prologue_sal.end >= end_pc) | |
3894 | return 0; | |
3895 | ||
3896 | while (prologue_sal.end < end_pc) | |
3897 | { | |
3898 | struct symtab_and_line sal; | |
3899 | ||
3900 | sal = find_pc_line (prologue_sal.end, 0); | |
3901 | if (sal.line == 0) | |
3902 | break; | |
3903 | /* Assume that a consecutive SAL for the same (or larger) | |
3904 | line mark the prologue -> body transition. */ | |
3905 | if (sal.line >= prologue_sal.line) | |
3906 | break; | |
3907 | /* Likewise if we are in a different symtab altogether | |
3908 | (e.g. within a file included via #include). */ | |
3909 | if (sal.symtab != prologue_sal.symtab) | |
3910 | break; | |
3911 | ||
3912 | /* The line number is smaller. Check that it's from the | |
3913 | same function, not something inlined. If it's inlined, | |
3914 | then there is no point comparing the line numbers. */ | |
3915 | bl = block_for_pc (prologue_sal.end); | |
3916 | while (bl) | |
3917 | { | |
3918 | if (block_inlined_p (bl)) | |
3919 | break; | |
3920 | if (BLOCK_FUNCTION (bl)) | |
3921 | { | |
3922 | bl = NULL; | |
3923 | break; | |
3924 | } | |
3925 | bl = BLOCK_SUPERBLOCK (bl); | |
3926 | } | |
3927 | if (bl != NULL) | |
3928 | break; | |
3929 | ||
3930 | /* The case in which compiler's optimizer/scheduler has | |
3931 | moved instructions into the prologue. We look ahead in | |
3932 | the function looking for address ranges whose | |
3933 | corresponding line number is less the first one that we | |
3934 | found for the function. This is more conservative then | |
3935 | refine_prologue_limit which scans a large number of SALs | |
3936 | looking for any in the prologue. */ | |
3937 | prologue_sal = sal; | |
3938 | } | |
3939 | } | |
3940 | ||
3941 | if (prologue_sal.end < end_pc) | |
3942 | /* Return the end of this line, or zero if we could not find a | |
3943 | line. */ | |
3944 | return prologue_sal.end; | |
3945 | else | |
3946 | /* Don't return END_PC, which is past the end of the function. */ | |
3947 | return prologue_sal.pc; | |
3948 | } | |
bf223d3e PA |
3949 | |
3950 | /* See symtab.h. */ | |
3951 | ||
3952 | symbol * | |
3953 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3954 | { | |
4024cf2b PA |
3955 | CORE_ADDR func_addr; |
3956 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3957 | return NULL; |
3958 | ||
4024cf2b | 3959 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3960 | if (sym != NULL |
3961 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3962 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3963 | return sym; |
3964 | ||
3965 | return NULL; | |
3966 | } | |
3967 | ||
f1f58506 | 3968 | \f |
c906108c SS |
3969 | /* If P is of the form "operator[ \t]+..." where `...' is |
3970 | some legitimate operator text, return a pointer to the | |
3971 | beginning of the substring of the operator text. | |
3972 | Otherwise, return "". */ | |
eca864fe | 3973 | |
96142726 TT |
3974 | static const char * |
3975 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3976 | { |
3977 | *end = ""; | |
8090b426 | 3978 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3979 | return *end; |
8090b426 | 3980 | p += CP_OPERATOR_LEN; |
c906108c SS |
3981 | |
3982 | /* Don't get faked out by `operator' being part of a longer | |
3983 | identifier. */ | |
c5aa993b | 3984 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3985 | return *end; |
3986 | ||
3987 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
3988 | while (*p == ' ' || *p == '\t') | |
3989 | p++; | |
3990 | ||
c378eb4e | 3991 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 3992 | |
c5aa993b | 3993 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 3994 | { |
96142726 | 3995 | const char *q = p + 1; |
433759f7 | 3996 | |
c5aa993b | 3997 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
3998 | q++; |
3999 | *end = q; | |
4000 | return p; | |
4001 | } | |
4002 | ||
53e8ad3d MS |
4003 | while (*p) |
4004 | switch (*p) | |
4005 | { | |
4006 | case '\\': /* regexp quoting */ | |
4007 | if (p[1] == '*') | |
4008 | { | |
3e43a32a | 4009 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4010 | *end = p + 3; |
4011 | else /* 'operator\*' */ | |
4012 | *end = p + 2; | |
4013 | return p; | |
4014 | } | |
4015 | else if (p[1] == '[') | |
4016 | { | |
4017 | if (p[2] == ']') | |
3e43a32a MS |
4018 | error (_("mismatched quoting on brackets, " |
4019 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4020 | else if (p[2] == '\\' && p[3] == ']') |
4021 | { | |
4022 | *end = p + 4; /* 'operator\[\]' */ | |
4023 | return p; | |
4024 | } | |
4025 | else | |
8a3fe4f8 | 4026 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4027 | } |
9af17804 | 4028 | else |
53e8ad3d | 4029 | { |
85102364 | 4030 | /* Gratuitous quote: skip it and move on. */ |
53e8ad3d MS |
4031 | p++; |
4032 | continue; | |
4033 | } | |
4034 | break; | |
4035 | case '!': | |
4036 | case '=': | |
4037 | case '*': | |
4038 | case '/': | |
4039 | case '%': | |
4040 | case '^': | |
4041 | if (p[1] == '=') | |
4042 | *end = p + 2; | |
4043 | else | |
4044 | *end = p + 1; | |
4045 | return p; | |
4046 | case '<': | |
4047 | case '>': | |
4048 | case '+': | |
4049 | case '-': | |
4050 | case '&': | |
4051 | case '|': | |
4052 | if (p[0] == '-' && p[1] == '>') | |
4053 | { | |
c378eb4e | 4054 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4055 | if (p[2] == '*') |
4056 | { | |
4057 | *end = p + 3; /* 'operator->*' */ | |
4058 | return p; | |
4059 | } | |
4060 | else if (p[2] == '\\') | |
4061 | { | |
4062 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4063 | return p; | |
4064 | } | |
4065 | else | |
4066 | { | |
4067 | *end = p + 2; /* 'operator->' */ | |
4068 | return p; | |
4069 | } | |
4070 | } | |
4071 | if (p[1] == '=' || p[1] == p[0]) | |
4072 | *end = p + 2; | |
4073 | else | |
4074 | *end = p + 1; | |
4075 | return p; | |
4076 | case '~': | |
4077 | case ',': | |
c5aa993b | 4078 | *end = p + 1; |
53e8ad3d MS |
4079 | return p; |
4080 | case '(': | |
4081 | if (p[1] != ')') | |
3e43a32a MS |
4082 | error (_("`operator ()' must be specified " |
4083 | "without whitespace in `()'")); | |
c5aa993b | 4084 | *end = p + 2; |
53e8ad3d MS |
4085 | return p; |
4086 | case '?': | |
4087 | if (p[1] != ':') | |
3e43a32a MS |
4088 | error (_("`operator ?:' must be specified " |
4089 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4090 | *end = p + 2; |
4091 | return p; | |
4092 | case '[': | |
4093 | if (p[1] != ']') | |
3e43a32a MS |
4094 | error (_("`operator []' must be specified " |
4095 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4096 | *end = p + 2; |
4097 | return p; | |
4098 | default: | |
8a3fe4f8 | 4099 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4100 | break; |
4101 | } | |
4102 | ||
c906108c SS |
4103 | *end = ""; |
4104 | return *end; | |
4105 | } | |
c906108c | 4106 | \f |
c5aa993b | 4107 | |
28cd9371 PW |
4108 | /* What part to match in a file name. */ |
4109 | ||
4110 | struct filename_partial_match_opts | |
4111 | { | |
4112 | /* Only match the directory name part. */ | |
491144b5 | 4113 | bool dirname = false; |
28cd9371 PW |
4114 | |
4115 | /* Only match the basename part. */ | |
491144b5 | 4116 | bool basename = false; |
28cd9371 PW |
4117 | }; |
4118 | ||
9fdc877b DE |
4119 | /* Data structure to maintain printing state for output_source_filename. */ |
4120 | ||
4121 | struct output_source_filename_data | |
4122 | { | |
28cd9371 PW |
4123 | /* Output only filenames matching REGEXP. */ |
4124 | std::string regexp; | |
4125 | gdb::optional<compiled_regex> c_regexp; | |
4126 | /* Possibly only match a part of the filename. */ | |
4127 | filename_partial_match_opts partial_match; | |
4128 | ||
4129 | ||
9fdc877b DE |
4130 | /* Cache of what we've seen so far. */ |
4131 | struct filename_seen_cache *filename_seen_cache; | |
4132 | ||
4133 | /* Flag of whether we're printing the first one. */ | |
4134 | int first; | |
4135 | }; | |
4136 | ||
c94fdfd0 | 4137 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4138 | NAME is the name to print. |
4139 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4140 | |
c94fdfd0 | 4141 | static void |
9fdc877b DE |
4142 | output_source_filename (const char *name, |
4143 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4144 | { |
4145 | /* Since a single source file can result in several partial symbol | |
4146 | tables, we need to avoid printing it more than once. Note: if | |
4147 | some of the psymtabs are read in and some are not, it gets | |
4148 | printed both under "Source files for which symbols have been | |
4149 | read" and "Source files for which symbols will be read in on | |
4150 | demand". I consider this a reasonable way to deal with the | |
4151 | situation. I'm not sure whether this can also happen for | |
4152 | symtabs; it doesn't hurt to check. */ | |
4153 | ||
4154 | /* Was NAME already seen? */ | |
bbf2f4df | 4155 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4156 | { |
4157 | /* Yes; don't print it again. */ | |
4158 | return; | |
4159 | } | |
9fdc877b | 4160 | |
28cd9371 PW |
4161 | /* Does it match data->regexp? */ |
4162 | if (data->c_regexp.has_value ()) | |
4163 | { | |
4164 | const char *to_match; | |
4165 | std::string dirname; | |
4166 | ||
4167 | if (data->partial_match.dirname) | |
4168 | { | |
4169 | dirname = ldirname (name); | |
4170 | to_match = dirname.c_str (); | |
4171 | } | |
4172 | else if (data->partial_match.basename) | |
4173 | to_match = lbasename (name); | |
4174 | else | |
4175 | to_match = name; | |
4176 | ||
4177 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4178 | return; | |
4179 | } | |
4180 | ||
4181 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4182 | if (! data->first) |
4183 | printf_filtered (", "); | |
4184 | data->first = 0; | |
c906108c SS |
4185 | |
4186 | wrap_here (""); | |
1ed9f74e | 4187 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4188 | } |
c906108c | 4189 | |
ccefe4c4 | 4190 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4191 | |
ccefe4c4 | 4192 | static void |
533a737e | 4193 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4194 | void *data) |
4195 | { | |
19ba03f4 SM |
4196 | output_source_filename (fullname ? fullname : filename, |
4197 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4198 | } |
4199 | ||
28cd9371 PW |
4200 | using isrc_flag_option_def |
4201 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4202 | ||
4203 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4204 | ||
4205 | isrc_flag_option_def { | |
4206 | "dirname", | |
4207 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4208 | N_("Show only the files having a dirname matching REGEXP."), | |
4209 | }, | |
4210 | ||
4211 | isrc_flag_option_def { | |
4212 | "basename", | |
4213 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4214 | N_("Show only the files having a basename matching REGEXP."), | |
4215 | }, | |
4216 | ||
4217 | }; | |
4218 | ||
4219 | /* Create an option_def_group for the "info sources" options, with | |
4220 | ISRC_OPTS as context. */ | |
4221 | ||
4222 | static inline gdb::option::option_def_group | |
4223 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4224 | { | |
4225 | return {{info_sources_option_defs}, isrc_opts}; | |
4226 | } | |
4227 | ||
4228 | /* Prints the header message for the source files that will be printed | |
4229 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4230 | that tells what will or has been done with the symbols of the | |
4231 | matching source files. */ | |
4232 | ||
c906108c | 4233 | static void |
28cd9371 PW |
4234 | print_info_sources_header (const char *symbol_msg, |
4235 | const struct output_source_filename_data *data) | |
4236 | { | |
4237 | puts_filtered (symbol_msg); | |
4238 | if (!data->regexp.empty ()) | |
4239 | { | |
4240 | if (data->partial_match.dirname) | |
4241 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4242 | data->regexp.c_str ()); | |
4243 | else if (data->partial_match.basename) | |
4244 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4245 | data->regexp.c_str ()); | |
4246 | else | |
4247 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4248 | data->regexp.c_str ()); | |
4249 | } | |
4250 | puts_filtered ("\n"); | |
4251 | } | |
4252 | ||
4253 | /* Completer for "info sources". */ | |
4254 | ||
4255 | static void | |
4256 | info_sources_command_completer (cmd_list_element *ignore, | |
4257 | completion_tracker &tracker, | |
4258 | const char *text, const char *word) | |
4259 | { | |
4260 | const auto group = make_info_sources_options_def_group (nullptr); | |
4261 | if (gdb::option::complete_options | |
4262 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4263 | return; | |
4264 | } | |
4265 | ||
4266 | static void | |
4267 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4268 | { |
9fdc877b | 4269 | struct output_source_filename_data data; |
c5aa993b | 4270 | |
c906108c SS |
4271 | if (!have_full_symbols () && !have_partial_symbols ()) |
4272 | { | |
8a3fe4f8 | 4273 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4274 | } |
c5aa993b | 4275 | |
bbf2f4df PA |
4276 | filename_seen_cache filenames_seen; |
4277 | ||
28cd9371 PW |
4278 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4279 | ||
4280 | gdb::option::process_options | |
4281 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4282 | |
28cd9371 PW |
4283 | if (args != NULL && *args != '\000') |
4284 | data.regexp = args; | |
c906108c | 4285 | |
28cd9371 | 4286 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4287 | data.first = 1; |
28cd9371 PW |
4288 | |
4289 | if (data.partial_match.dirname && data.partial_match.basename) | |
4290 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4291 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4292 | && data.regexp.empty ()) | |
4293 | error (_("Missing REGEXP for 'info sources'.")); | |
4294 | ||
4295 | if (data.regexp.empty ()) | |
4296 | data.c_regexp.reset (); | |
4297 | else | |
4298 | { | |
4299 | int cflags = REG_NOSUB; | |
4300 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4301 | cflags |= REG_ICASE; | |
4302 | #endif | |
4303 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4304 | _("Invalid regexp")); | |
4305 | } | |
4306 | ||
4307 | print_info_sources_header | |
4308 | (_("Source files for which symbols have been read in:\n"), &data); | |
4309 | ||
2030c079 | 4310 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4311 | { |
b669c953 | 4312 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4313 | { |
4314 | for (symtab *s : compunit_filetabs (cu)) | |
4315 | { | |
4316 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4317 | |
8b31193a TT |
4318 | output_source_filename (fullname, &data); |
4319 | } | |
4320 | } | |
4321 | } | |
c906108c | 4322 | printf_filtered ("\n\n"); |
c5aa993b | 4323 | |
28cd9371 PW |
4324 | print_info_sources_header |
4325 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4326 | |
bbf2f4df | 4327 | filenames_seen.clear (); |
9fdc877b | 4328 | data.first = 1; |
bb4142cf DE |
4329 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4330 | 1 /*need_fullname*/); | |
c906108c SS |
4331 | printf_filtered ("\n"); |
4332 | } | |
4333 | ||
fbd9ab74 JK |
4334 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4335 | non-zero compare only lbasename of FILES. */ | |
4336 | ||
c906108c | 4337 | static int |
96142726 | 4338 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4339 | { |
4340 | int i; | |
4341 | ||
4342 | if (file != NULL && nfiles != 0) | |
4343 | { | |
4344 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4345 | { |
fbd9ab74 JK |
4346 | if (compare_filenames_for_search (file, (basenames |
4347 | ? lbasename (files[i]) | |
4348 | : files[i]))) | |
c5aa993b JM |
4349 | return 1; |
4350 | } | |
c906108c SS |
4351 | } |
4352 | else if (nfiles == 0) | |
4353 | return 1; | |
4354 | return 0; | |
4355 | } | |
4356 | ||
b52109bc | 4357 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4358 | sort symbols, not minimal symbols. */ |
eca864fe | 4359 | |
b9c04fb2 TT |
4360 | int |
4361 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4362 | const symbol_search &sym_b) | |
434d2d4f | 4363 | { |
b52109bc DE |
4364 | int c; |
4365 | ||
b9c04fb2 TT |
4366 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4367 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4368 | if (c != 0) |
4369 | return c; | |
434d2d4f | 4370 | |
b9c04fb2 TT |
4371 | if (sym_a.block != sym_b.block) |
4372 | return sym_a.block - sym_b.block; | |
b52109bc | 4373 | |
b9c04fb2 TT |
4374 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4375 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4376 | } |
4377 | ||
12615cba PW |
4378 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4379 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4380 | ||
4381 | bool | |
4382 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4383 | const struct symbol *sym) | |
4384 | { | |
4385 | struct type *sym_type; | |
4386 | std::string printed_sym_type_name; | |
4387 | ||
4388 | if (symbol_lookup_debug > 1) | |
4389 | { | |
4390 | fprintf_unfiltered (gdb_stdlog, | |
4391 | "treg_matches_sym_type_name\n sym %s\n", | |
4392 | SYMBOL_NATURAL_NAME (sym)); | |
4393 | } | |
4394 | ||
4395 | sym_type = SYMBOL_TYPE (sym); | |
4396 | if (sym_type == NULL) | |
4397 | return false; | |
4398 | ||
43d397ca PW |
4399 | { |
4400 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4401 | |
12615cba | 4402 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4403 | } |
4404 | ||
12615cba PW |
4405 | |
4406 | if (symbol_lookup_debug > 1) | |
4407 | { | |
4408 | fprintf_unfiltered (gdb_stdlog, | |
4409 | " sym_type_name %s\n", | |
4410 | printed_sym_type_name.c_str ()); | |
4411 | } | |
4412 | ||
4413 | ||
4414 | if (printed_sym_type_name.empty ()) | |
4415 | return false; | |
4416 | ||
4417 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4418 | } | |
4419 | ||
4420 | ||
b9c04fb2 | 4421 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4422 | |
4423 | static void | |
b9c04fb2 | 4424 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4425 | { |
b9c04fb2 TT |
4426 | std::sort (result->begin (), result->end ()); |
4427 | result->erase (std::unique (result->begin (), result->end ()), | |
4428 | result->end ()); | |
434d2d4f | 4429 | } |
5bd98722 | 4430 | |
c906108c | 4431 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4432 | returning the results. |
c906108c SS |
4433 | |
4434 | Only symbols of KIND are searched: | |
e8930875 | 4435 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4436 | and constants (enums). |
4437 | if T_REGEXP is not NULL, only returns var that have | |
4438 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4439 | FUNCTIONS_DOMAIN - search all functions |
4440 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4441 | ALL_DOMAIN - an internal error for this function |
c906108c | 4442 | |
b52109bc DE |
4443 | Within each file the results are sorted locally; each symtab's global and |
4444 | static blocks are separately alphabetized. | |
4acfdd20 AB |
4445 | Duplicate entries are removed. |
4446 | ||
4447 | When EXCLUDE_MINSYMS is false then matching minsyms are also returned, | |
4448 | otherwise they are excluded. */ | |
c378eb4e | 4449 | |
b9c04fb2 | 4450 | std::vector<symbol_search> |
96142726 | 4451 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4452 | const char *t_regexp, |
4acfdd20 AB |
4453 | int nfiles, const char *files[], |
4454 | bool exclude_minsyms) | |
c906108c | 4455 | { |
346d1dfe | 4456 | const struct blockvector *bv; |
582942f4 | 4457 | const struct block *b; |
52f0bd74 | 4458 | int i = 0; |
8157b174 | 4459 | struct block_iterator iter; |
52f0bd74 | 4460 | struct symbol *sym; |
c906108c | 4461 | int found_misc = 0; |
bc043ef3 | 4462 | static const enum minimal_symbol_type types[] |
eb86c5e2 | 4463 | = {mst_data, mst_text, mst_unknown}; |
bc043ef3 | 4464 | static const enum minimal_symbol_type types2[] |
eb86c5e2 | 4465 | = {mst_bss, mst_file_text, mst_unknown}; |
bc043ef3 | 4466 | static const enum minimal_symbol_type types3[] |
eb86c5e2 | 4467 | = {mst_file_data, mst_solib_trampoline, mst_unknown}; |
bc043ef3 | 4468 | static const enum minimal_symbol_type types4[] |
eb86c5e2 | 4469 | = {mst_file_bss, mst_text_gnu_ifunc, mst_unknown}; |
c906108c SS |
4470 | enum minimal_symbol_type ourtype; |
4471 | enum minimal_symbol_type ourtype2; | |
4472 | enum minimal_symbol_type ourtype3; | |
4473 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4474 | std::vector<symbol_search> result; |
2d7cc5c7 | 4475 | gdb::optional<compiled_regex> preg; |
12615cba | 4476 | gdb::optional<compiled_regex> treg; |
c906108c | 4477 | |
e8930875 JK |
4478 | gdb_assert (kind <= TYPES_DOMAIN); |
4479 | ||
8903c50d TT |
4480 | ourtype = types[kind]; |
4481 | ourtype2 = types2[kind]; | |
4482 | ourtype3 = types3[kind]; | |
4483 | ourtype4 = types4[kind]; | |
c906108c | 4484 | |
c906108c SS |
4485 | if (regexp != NULL) |
4486 | { | |
4487 | /* Make sure spacing is right for C++ operators. | |
4488 | This is just a courtesy to make the matching less sensitive | |
4489 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4490 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4491 | const char *opend; |
4492 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4493 | |
c906108c | 4494 | if (*opname) |
c5aa993b | 4495 | { |
3e43a32a MS |
4496 | int fix = -1; /* -1 means ok; otherwise number of |
4497 | spaces needed. */ | |
433759f7 | 4498 | |
c5aa993b JM |
4499 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4500 | { | |
c378eb4e | 4501 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4502 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4503 | fix = 1; | |
4504 | } | |
4505 | else | |
4506 | { | |
c378eb4e | 4507 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4508 | if (opname[-1] == ' ') |
4509 | fix = 0; | |
4510 | } | |
c378eb4e | 4511 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4512 | if (fix >= 0) |
4513 | { | |
045f55a6 | 4514 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4515 | |
c5aa993b JM |
4516 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4517 | regexp = tmp; | |
4518 | } | |
4519 | } | |
4520 | ||
2d7cc5c7 PA |
4521 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4522 | ? REG_ICASE : 0); | |
4523 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4524 | } |
4525 | ||
12615cba PW |
4526 | if (t_regexp != NULL) |
4527 | { | |
4528 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4529 | ? REG_ICASE : 0); | |
4530 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4531 | } | |
4532 | ||
c906108c SS |
4533 | /* Search through the partial symtabs *first* for all symbols |
4534 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4535 | the machinery below. */ |
14bc53a8 PA |
4536 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4537 | { | |
4538 | return file_matches (filename, files, nfiles, | |
4539 | basenames); | |
4540 | }, | |
b5ec771e | 4541 | lookup_name_info::match_any (), |
14bc53a8 PA |
4542 | [&] (const char *symname) |
4543 | { | |
12615cba PW |
4544 | return (!preg.has_value () |
4545 | || preg->exec (symname, | |
4546 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4547 | }, |
4548 | NULL, | |
4549 | kind); | |
c906108c SS |
4550 | |
4551 | /* Here, we search through the minimal symbol tables for functions | |
4552 | and variables that match, and force their symbols to be read. | |
4553 | This is in particular necessary for demangled variable names, | |
4554 | which are no longer put into the partial symbol tables. | |
4555 | The symbol will then be found during the scan of symtabs below. | |
4556 | ||
4557 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4558 | for the function, for variables we have to call |
4559 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4560 | has debug info. | |
c906108c | 4561 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4562 | any matching symbols without debug info. |
4563 | We only search the objfile the msymbol came from, we no longer search | |
4564 | all objfiles. In large programs (1000s of shared libs) searching all | |
4565 | objfiles is not worth the pain. */ | |
c906108c | 4566 | |
176620f1 | 4567 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4568 | { |
2030c079 | 4569 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4570 | { |
7932255d | 4571 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4572 | { |
4573 | QUIT; | |
89295b4d | 4574 | |
5325b9bf TT |
4575 | if (msymbol->created_by_gdb) |
4576 | continue; | |
422d65e7 | 4577 | |
5325b9bf TT |
4578 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4579 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4580 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4581 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4582 | { | |
4583 | if (!preg.has_value () | |
4584 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4585 | NULL, 0) == 0) | |
4586 | { | |
4587 | /* Note: An important side-effect of these | |
4588 | lookup functions is to expand the symbol | |
4589 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4590 | the next loop on compunits. */ |
5325b9bf TT |
4591 | if (kind == FUNCTIONS_DOMAIN |
4592 | ? (find_pc_compunit_symtab | |
4593 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4594 | == NULL) | |
4595 | : (lookup_symbol_in_objfile_from_linkage_name | |
4596 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4597 | VAR_DOMAIN) | |
4598 | .symbol == NULL)) | |
4599 | found_misc = 1; | |
4600 | } | |
4601 | } | |
4602 | } | |
4603 | } | |
c906108c SS |
4604 | } |
4605 | ||
2030c079 | 4606 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4607 | { |
b669c953 | 4608 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4609 | { |
4610 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4611 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4612 | { | |
4613 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4614 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4615 | { | |
4616 | struct symtab *real_symtab = symbol_symtab (sym); | |
4617 | ||
4618 | QUIT; | |
4619 | ||
4620 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4621 | not need to be a substring of symtab_to_fullname as | |
4622 | it may contain "./" etc. */ | |
4623 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4624 | || ((basenames_may_differ | |
4625 | || file_matches (lbasename (real_symtab->filename), | |
4626 | files, nfiles, 1)) | |
4627 | && file_matches (symtab_to_fullname (real_symtab), | |
4628 | files, nfiles, 0))) | |
4629 | && ((!preg.has_value () | |
4630 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4631 | NULL, 0) == 0) | |
4632 | && ((kind == VARIABLES_DOMAIN | |
4633 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4634 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4635 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4636 | /* LOC_CONST can be used for more than | |
4637 | just enums, e.g., c++ static const | |
4638 | members. We only want to skip enums | |
4639 | here. */ | |
4640 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4641 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4642 | == TYPE_CODE_ENUM)) | |
4643 | && (!treg.has_value () | |
4644 | || treg_matches_sym_type_name (*treg, sym))) | |
4645 | || (kind == FUNCTIONS_DOMAIN | |
4646 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4647 | && (!treg.has_value () | |
4648 | || treg_matches_sym_type_name (*treg, | |
4649 | sym))) | |
4650 | || (kind == TYPES_DOMAIN | |
d8f27c60 AB |
4651 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF |
4652 | && SYMBOL_DOMAIN (sym) != MODULE_DOMAIN)))) | |
d8aeb77f TT |
4653 | { |
4654 | /* match */ | |
4655 | result.emplace_back (i, sym); | |
4656 | } | |
4657 | } | |
4658 | } | |
4659 | } | |
4660 | } | |
c906108c | 4661 | |
b9c04fb2 TT |
4662 | if (!result.empty ()) |
4663 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4664 | |
c906108c | 4665 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4666 | no debug symbols, then add matching minsyms. But if the user wants |
4667 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4668 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4669 | |
a8462bbf | 4670 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4acfdd20 | 4671 | && !exclude_minsyms |
a8462bbf | 4672 | && !treg.has_value ()) |
c906108c | 4673 | { |
2030c079 | 4674 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4675 | { |
7932255d | 4676 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4677 | { |
4678 | QUIT; | |
89295b4d | 4679 | |
5325b9bf TT |
4680 | if (msymbol->created_by_gdb) |
4681 | continue; | |
422d65e7 | 4682 | |
5325b9bf TT |
4683 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4684 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4685 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4686 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4687 | { | |
4688 | if (!preg.has_value () | |
4689 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4690 | NULL, 0) == 0) | |
4691 | { | |
4692 | /* For functions we can do a quick check of whether the | |
4693 | symbol might be found via find_pc_symtab. */ | |
4694 | if (kind != FUNCTIONS_DOMAIN | |
4695 | || (find_pc_compunit_symtab | |
4696 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4697 | == NULL)) | |
4698 | { | |
4699 | if (lookup_symbol_in_objfile_from_linkage_name | |
4700 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4701 | VAR_DOMAIN) | |
4702 | .symbol == NULL) | |
4703 | { | |
4704 | /* match */ | |
4705 | result.emplace_back (i, msymbol, objfile); | |
4706 | } | |
4707 | } | |
4708 | } | |
4709 | } | |
4710 | } | |
4711 | } | |
c906108c SS |
4712 | } |
4713 | ||
b9c04fb2 | 4714 | return result; |
c906108c SS |
4715 | } |
4716 | ||
4717 | /* Helper function for symtab_symbol_info, this function uses | |
4718 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4719 | regarding the match to gdb_stdout. If LAST is not NULL, |
4720 | print file and line number information for the symbol as | |
4721 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4722 | |
c906108c | 4723 | static void |
8903c50d | 4724 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4725 | struct symbol *sym, |
05cba821 | 4726 | int block, const char *last) |
c906108c | 4727 | { |
43d397ca | 4728 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4729 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4730 | |
c7dcbf88 | 4731 | if (last != NULL) |
c906108c | 4732 | { |
c7dcbf88 | 4733 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4734 | |
c7dcbf88 AA |
4735 | if (filename_cmp (last, s_filename) != 0) |
4736 | { | |
6a831f06 PA |
4737 | printf_filtered (_("\nFile %ps:\n"), |
4738 | styled_string (file_name_style.style (), | |
4739 | s_filename)); | |
c7dcbf88 AA |
4740 | } |
4741 | ||
4742 | if (SYMBOL_LINE (sym) != 0) | |
4743 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4744 | else | |
4745 | puts_filtered ("\t"); | |
4746 | } | |
b744723f | 4747 | |
176620f1 | 4748 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4749 | printf_filtered ("static "); |
c5aa993b | 4750 | |
c378eb4e | 4751 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4752 | if (kind == TYPES_DOMAIN |
4753 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 AB |
4754 | { |
4755 | /* FIXME: For C (and C++) we end up with a difference in output here | |
4756 | between how a typedef is printed, and non-typedefs are printed. | |
4757 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4758 | appear C-like, while TYPE_PRINT doesn't. | |
4759 | ||
4760 | For the struct printing case below, things are worse, we force | |
4761 | printing of the ";" in this function, which is going to be wrong | |
4762 | for languages that don't require a ";" between statements. */ | |
4763 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_TYPEDEF) | |
4764 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); | |
4765 | else | |
4766 | { | |
4767 | type_print (SYMBOL_TYPE (sym), "", gdb_stdout, -1); | |
4768 | printf_filtered ("\n"); | |
4769 | } | |
4770 | } | |
c378eb4e | 4771 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4772 | else if (kind < TYPES_DOMAIN |
4773 | || (kind == TYPES_DOMAIN | |
4774 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4775 | { |
4776 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4777 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4778 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4779 | gdb_stdout, 0); |
c906108c SS |
4780 | |
4781 | printf_filtered (";\n"); | |
4782 | } | |
c906108c SS |
4783 | } |
4784 | ||
4785 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4786 | for non-debugging symbols to gdb_stdout. */ |
4787 | ||
c906108c | 4788 | static void |
7c7b6655 | 4789 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4790 | { |
7c7b6655 | 4791 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4792 | char *tmp; |
4793 | ||
d80b854b | 4794 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4795 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4796 | & (CORE_ADDR) 0xffffffff, |
4797 | 8); | |
3ac4495a | 4798 | else |
77e371c0 | 4799 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4800 | 16); |
6a831f06 PA |
4801 | |
4802 | ui_file_style sym_style = (msymbol.minsym->text_p () | |
4803 | ? function_name_style.style () | |
4804 | : ui_file_style ()); | |
4805 | ||
4806 | printf_filtered (_("%ps %ps\n"), | |
4807 | styled_string (address_style.style (), tmp), | |
4808 | styled_string (sym_style, | |
4809 | MSYMBOL_PRINT_NAME (msymbol.minsym))); | |
c906108c SS |
4810 | } |
4811 | ||
4812 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4813 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4814 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4815 | matches. */ |
4816 | ||
c906108c | 4817 | static void |
4acfdd20 | 4818 | symtab_symbol_info (bool quiet, bool exclude_minsyms, |
12615cba PW |
4819 | const char *regexp, enum search_domain kind, |
4820 | const char *t_regexp, int from_tty) | |
c906108c | 4821 | { |
bc043ef3 | 4822 | static const char * const classnames[] = |
e8930875 | 4823 | {"variable", "function", "type"}; |
c7dcbf88 | 4824 | const char *last_filename = ""; |
c906108c SS |
4825 | int first = 1; |
4826 | ||
e8930875 JK |
4827 | gdb_assert (kind <= TYPES_DOMAIN); |
4828 | ||
b16507e0 AB |
4829 | if (regexp != nullptr && *regexp == '\0') |
4830 | regexp = nullptr; | |
4831 | ||
c378eb4e | 4832 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba | 4833 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4acfdd20 AB |
4834 | t_regexp, 0, NULL, |
4835 | exclude_minsyms); | |
c906108c | 4836 | |
12615cba PW |
4837 | if (!quiet) |
4838 | { | |
4839 | if (regexp != NULL) | |
4840 | { | |
4841 | if (t_regexp != NULL) | |
4842 | printf_filtered | |
4843 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 4844 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
4845 | classnames[kind], regexp, t_regexp); |
4846 | else | |
4847 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4848 | classnames[kind], regexp); | |
4849 | } | |
4850 | else | |
4851 | { | |
4852 | if (t_regexp != NULL) | |
4853 | printf_filtered | |
4854 | (_("All defined %ss" | |
0c95f9ed | 4855 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
4856 | classnames[kind], t_regexp); |
4857 | else | |
4858 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4859 | } | |
4860 | } | |
c906108c | 4861 | |
b9c04fb2 | 4862 | for (const symbol_search &p : symbols) |
c906108c SS |
4863 | { |
4864 | QUIT; | |
4865 | ||
b9c04fb2 | 4866 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4867 | { |
4868 | if (first) | |
4869 | { | |
12615cba PW |
4870 | if (!quiet) |
4871 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4872 | first = 0; |
4873 | } | |
b9c04fb2 | 4874 | print_msymbol_info (p.msymbol); |
c5aa993b | 4875 | } |
c906108c | 4876 | else |
c5aa993b JM |
4877 | { |
4878 | print_symbol_info (kind, | |
b9c04fb2 TT |
4879 | p.symbol, |
4880 | p.block, | |
c5aa993b | 4881 | last_filename); |
d01060f0 | 4882 | last_filename |
b9c04fb2 | 4883 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4884 | } |
c906108c | 4885 | } |
c906108c SS |
4886 | } |
4887 | ||
4acfdd20 AB |
4888 | /* Structure to hold the values of the options used by the 'info variables' |
4889 | and 'info functions' commands. These correspond to the -q, -t, and -n | |
4890 | options. */ | |
4891 | ||
4892 | struct info_print_options | |
4893 | { | |
491144b5 CB |
4894 | bool quiet = false; |
4895 | bool exclude_minsyms = false; | |
4acfdd20 AB |
4896 | char *type_regexp = nullptr; |
4897 | ||
4898 | ~info_print_options () | |
4899 | { | |
4900 | xfree (type_regexp); | |
4901 | } | |
4902 | }; | |
4903 | ||
4904 | /* The options used by the 'info variables' and 'info functions' | |
4905 | commands. */ | |
4906 | ||
4907 | static const gdb::option::option_def info_print_options_defs[] = { | |
4908 | gdb::option::boolean_option_def<info_print_options> { | |
4909 | "q", | |
4910 | [] (info_print_options *opt) { return &opt->quiet; }, | |
4911 | nullptr, /* show_cmd_cb */ | |
4912 | nullptr /* set_doc */ | |
4913 | }, | |
4914 | ||
4915 | gdb::option::boolean_option_def<info_print_options> { | |
4916 | "n", | |
4917 | [] (info_print_options *opt) { return &opt->exclude_minsyms; }, | |
4918 | nullptr, /* show_cmd_cb */ | |
4919 | nullptr /* set_doc */ | |
4920 | }, | |
4921 | ||
4922 | gdb::option::string_option_def<info_print_options> { | |
4923 | "t", | |
4924 | [] (info_print_options *opt) { return &opt->type_regexp; }, | |
4925 | nullptr, /* show_cmd_cb */ | |
4926 | nullptr /* set_doc */ | |
4927 | } | |
4928 | }; | |
4929 | ||
4930 | /* Returns the option group used by 'info variables' and 'info | |
4931 | functions'. */ | |
4932 | ||
4933 | static gdb::option::option_def_group | |
4934 | make_info_print_options_def_group (info_print_options *opts) | |
4935 | { | |
4936 | return {{info_print_options_defs}, opts}; | |
4937 | } | |
4938 | ||
4939 | /* Command completer for 'info variables' and 'info functions'. */ | |
4940 | ||
4941 | static void | |
4942 | info_print_command_completer (struct cmd_list_element *ignore, | |
4943 | completion_tracker &tracker, | |
4944 | const char *text, const char * /* word */) | |
4945 | { | |
4946 | const auto group | |
4947 | = make_info_print_options_def_group (nullptr); | |
4948 | if (gdb::option::complete_options | |
4949 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4950 | return; | |
4951 | ||
4952 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
4953 | symbol_completer (ignore, tracker, text, word); | |
4954 | } | |
4955 | ||
b16507e0 AB |
4956 | /* Implement the 'info variables' command. */ |
4957 | ||
0b39b52e | 4958 | static void |
12615cba | 4959 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4960 | { |
b16507e0 | 4961 | info_print_options opts; |
4acfdd20 AB |
4962 | auto grp = make_info_print_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; | |
b16507e0 | 4967 | |
4acfdd20 | 4968 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, VARIABLES_DOMAIN, |
b16507e0 | 4969 | opts.type_regexp, from_tty); |
0b39b52e TT |
4970 | } |
4971 | ||
b16507e0 | 4972 | /* Implement the 'info functions' command. */ |
12615cba | 4973 | |
c906108c | 4974 | static void |
12615cba | 4975 | info_functions_command (const char *args, int from_tty) |
c906108c | 4976 | { |
b16507e0 | 4977 | info_print_options opts; |
4acfdd20 AB |
4978 | auto grp = make_info_print_options_def_group (&opts); |
4979 | gdb::option::process_options | |
4980 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4981 | if (args != nullptr && *args == '\0') | |
4982 | args = nullptr; | |
b16507e0 | 4983 | |
4acfdd20 AB |
4984 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, |
4985 | FUNCTIONS_DOMAIN, opts.type_regexp, from_tty); | |
c906108c SS |
4986 | } |
4987 | ||
a8eab7c6 AB |
4988 | /* Holds the -q option for the 'info types' command. */ |
4989 | ||
4990 | struct info_types_options | |
4991 | { | |
491144b5 | 4992 | bool quiet = false; |
a8eab7c6 AB |
4993 | }; |
4994 | ||
4995 | /* The options used by the 'info types' command. */ | |
4996 | ||
4997 | static const gdb::option::option_def info_types_options_defs[] = { | |
4998 | gdb::option::boolean_option_def<info_types_options> { | |
4999 | "q", | |
5000 | [] (info_types_options *opt) { return &opt->quiet; }, | |
5001 | nullptr, /* show_cmd_cb */ | |
5002 | nullptr /* set_doc */ | |
5003 | } | |
5004 | }; | |
5005 | ||
5006 | /* Returns the option group used by 'info types'. */ | |
5007 | ||
5008 | static gdb::option::option_def_group | |
5009 | make_info_types_options_def_group (info_types_options *opts) | |
5010 | { | |
5011 | return {{info_types_options_defs}, opts}; | |
5012 | } | |
5013 | ||
5014 | /* Implement the 'info types' command. */ | |
357e46e7 | 5015 | |
c906108c | 5016 | static void |
a8eab7c6 | 5017 | info_types_command (const char *args, int from_tty) |
c906108c | 5018 | { |
a8eab7c6 AB |
5019 | info_types_options opts; |
5020 | ||
5021 | auto grp = make_info_types_options_def_group (&opts); | |
5022 | gdb::option::process_options | |
5023 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5024 | if (args != nullptr && *args == '\0') | |
5025 | args = nullptr; | |
4acfdd20 | 5026 | symtab_symbol_info (opts.quiet, false, args, TYPES_DOMAIN, NULL, from_tty); |
a8eab7c6 AB |
5027 | } |
5028 | ||
5029 | /* Command completer for 'info types' command. */ | |
5030 | ||
5031 | static void | |
5032 | info_types_command_completer (struct cmd_list_element *ignore, | |
5033 | completion_tracker &tracker, | |
5034 | const char *text, const char * /* word */) | |
5035 | { | |
5036 | const auto group | |
5037 | = make_info_types_options_def_group (nullptr); | |
5038 | if (gdb::option::complete_options | |
5039 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5040 | return; | |
5041 | ||
5042 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5043 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
5044 | } |
5045 | ||
c378eb4e | 5046 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 5047 | |
8b93c638 | 5048 | void |
fba45db2 | 5049 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
5050 | { |
5051 | rbreak_command (regexp, from_tty); | |
5052 | } | |
8926118c | 5053 | |
c906108c | 5054 | static void |
0b39b52e | 5055 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 5056 | { |
c80049d3 | 5057 | std::string string; |
96142726 TT |
5058 | const char **files = NULL; |
5059 | const char *file_name; | |
8bd10a10 | 5060 | int nfiles = 0; |
c906108c | 5061 | |
8bd10a10 CM |
5062 | if (regexp) |
5063 | { | |
0b39b52e | 5064 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5065 | |
8bd10a10 CM |
5066 | if (colon && *(colon + 1) != ':') |
5067 | { | |
5068 | int colon_index; | |
96142726 | 5069 | char *local_name; |
8bd10a10 CM |
5070 | |
5071 | colon_index = colon - regexp; | |
224c3ddb | 5072 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5073 | memcpy (local_name, regexp, colon_index); |
5074 | local_name[colon_index--] = 0; | |
5075 | while (isspace (local_name[colon_index])) | |
5076 | local_name[colon_index--] = 0; | |
5077 | file_name = local_name; | |
8bd10a10 CM |
5078 | files = &file_name; |
5079 | nfiles = 1; | |
529480d0 | 5080 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5081 | } |
5082 | } | |
5083 | ||
b9c04fb2 TT |
5084 | std::vector<symbol_search> symbols = search_symbols (regexp, |
5085 | FUNCTIONS_DOMAIN, | |
12615cba | 5086 | NULL, |
4acfdd20 AB |
5087 | nfiles, files, |
5088 | false); | |
c906108c | 5089 | |
c80049d3 | 5090 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5091 | for (const symbol_search &p : symbols) |
c906108c | 5092 | { |
b9c04fb2 | 5093 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5094 | { |
b9c04fb2 | 5095 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5096 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5097 | |
c80049d3 TT |
5098 | string = string_printf ("%s:'%s'", fullname, |
5099 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
5100 | break_command (&string[0], from_tty); | |
c7dcbf88 | 5101 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5102 | } |
c906108c | 5103 | else |
c5aa993b | 5104 | { |
c80049d3 TT |
5105 | string = string_printf ("'%s'", |
5106 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 5107 | |
c80049d3 | 5108 | break_command (&string[0], from_tty); |
c5aa993b | 5109 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 5110 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 5111 | } |
c906108c | 5112 | } |
c906108c | 5113 | } |
c906108c | 5114 | \f |
c5aa993b | 5115 | |
c62446b1 | 5116 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5117 | |
5118 | static int | |
c62446b1 | 5119 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5120 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5121 | completion_match_result &match_res) |
5122 | { | |
d4c2a405 | 5123 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5124 | |
b5ec771e | 5125 | symbol_name_matcher_ftype *name_match |
618daa93 | 5126 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 5127 | |
a207cff2 | 5128 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5129 | } |
5130 | ||
b5ec771e | 5131 | /* See symtab.h. */ |
c906108c | 5132 | |
b5ec771e | 5133 | void |
eb3ff9a5 | 5134 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5135 | language symbol_language, |
eb3ff9a5 | 5136 | const char *symname, |
b5ec771e | 5137 | const lookup_name_info &lookup_name, |
0d5cff50 | 5138 | const char *text, const char *word) |
c906108c | 5139 | { |
b5ec771e PA |
5140 | completion_match_result &match_res |
5141 | = tracker.reset_completion_match_result (); | |
5142 | ||
c378eb4e | 5143 | /* Clip symbols that cannot match. */ |
c62446b1 | 5144 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 5145 | return; |
c906108c | 5146 | |
b5ec771e PA |
5147 | /* Refresh SYMNAME from the match string. It's potentially |
5148 | different depending on language. (E.g., on Ada, the match may be | |
5149 | the encoded symbol name wrapped in "<>"). */ | |
5150 | symname = match_res.match.match (); | |
5151 | gdb_assert (symname != NULL); | |
5152 | ||
c906108c | 5153 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5154 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5155 | |
5156 | { | |
60a20c19 PA |
5157 | gdb::unique_xmalloc_ptr<char> completion |
5158 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5159 | |
a207cff2 PA |
5160 | /* Here we pass the match-for-lcd object to add_completion. Some |
5161 | languages match the user text against substrings of symbol | |
5162 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5163 | "std::vector::push_back", "std::string::push_back", etc., and | |
5164 | in this case we want the completion lowest common denominator | |
5165 | to be "push_back" instead of "std::". */ | |
5166 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5167 | &match_res.match_for_lcd, text, word); |
c906108c SS |
5168 | } |
5169 | } | |
5170 | ||
6da67eb1 PA |
5171 | /* completion_list_add_name wrapper for struct symbol. */ |
5172 | ||
5173 | static void | |
eb3ff9a5 PA |
5174 | completion_list_add_symbol (completion_tracker &tracker, |
5175 | symbol *sym, | |
b5ec771e | 5176 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5177 | const char *text, const char *word) |
5178 | { | |
b5ec771e PA |
5179 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5180 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5181 | lookup_name, text, word); |
6da67eb1 PA |
5182 | } |
5183 | ||
5184 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5185 | ||
5186 | static void | |
eb3ff9a5 PA |
5187 | completion_list_add_msymbol (completion_tracker &tracker, |
5188 | minimal_symbol *sym, | |
b5ec771e | 5189 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5190 | const char *text, const char *word) |
5191 | { | |
b5ec771e PA |
5192 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
5193 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5194 | lookup_name, text, word); |
6da67eb1 PA |
5195 | } |
5196 | ||
b5ec771e | 5197 | |
69636828 AF |
5198 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5199 | again and feed all the selectors into the mill. */ | |
5200 | ||
5201 | static void | |
eb3ff9a5 PA |
5202 | completion_list_objc_symbol (completion_tracker &tracker, |
5203 | struct minimal_symbol *msymbol, | |
b5ec771e | 5204 | const lookup_name_info &lookup_name, |
0d5cff50 | 5205 | const char *text, const char *word) |
69636828 AF |
5206 | { |
5207 | static char *tmp = NULL; | |
5208 | static unsigned int tmplen = 0; | |
9af17804 | 5209 | |
0d5cff50 | 5210 | const char *method, *category, *selector; |
69636828 | 5211 | char *tmp2 = NULL; |
9af17804 | 5212 | |
efd66ac6 | 5213 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
5214 | |
5215 | /* Is it a method? */ | |
5216 | if ((method[0] != '-') && (method[0] != '+')) | |
5217 | return; | |
5218 | ||
1b026119 | 5219 | if (text[0] == '[') |
69636828 | 5220 | /* Complete on shortened method method. */ |
b5ec771e PA |
5221 | completion_list_add_name (tracker, language_objc, |
5222 | method + 1, | |
5223 | lookup_name, | |
1b026119 | 5224 | text, word); |
9af17804 | 5225 | |
69636828 AF |
5226 | while ((strlen (method) + 1) >= tmplen) |
5227 | { | |
5228 | if (tmplen == 0) | |
5229 | tmplen = 1024; | |
5230 | else | |
5231 | tmplen *= 2; | |
224c3ddb | 5232 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5233 | } |
5234 | selector = strchr (method, ' '); | |
5235 | if (selector != NULL) | |
5236 | selector++; | |
9af17804 | 5237 | |
69636828 | 5238 | category = strchr (method, '('); |
9af17804 | 5239 | |
69636828 AF |
5240 | if ((category != NULL) && (selector != NULL)) |
5241 | { | |
5242 | memcpy (tmp, method, (category - method)); | |
5243 | tmp[category - method] = ' '; | |
5244 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5245 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5246 | lookup_name, text, word); |
5247 | if (text[0] == '[') | |
b5ec771e | 5248 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5249 | lookup_name, text, word); |
69636828 | 5250 | } |
9af17804 | 5251 | |
69636828 AF |
5252 | if (selector != NULL) |
5253 | { | |
5254 | /* Complete on selector only. */ | |
5255 | strcpy (tmp, selector); | |
5256 | tmp2 = strchr (tmp, ']'); | |
5257 | if (tmp2 != NULL) | |
5258 | *tmp2 = '\0'; | |
9af17804 | 5259 | |
b5ec771e | 5260 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5261 | lookup_name, text, word); |
69636828 AF |
5262 | } |
5263 | } | |
5264 | ||
5265 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5266 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5267 | |
6f937416 PA |
5268 | static const char * |
5269 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5270 | { |
5271 | for (; p > text; --p) | |
5272 | { | |
5273 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5274 | continue; | |
5275 | else | |
5276 | { | |
5277 | if ((current_language->la_language == language_objc)) | |
5278 | { | |
c378eb4e | 5279 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5280 | continue; |
5281 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5282 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5283 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5284 | { /* Might be part of a method name. */ |
6f937416 | 5285 | const char *t = p; |
69636828 AF |
5286 | |
5287 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5288 | that we are in the middle of a method name. However, | |
5289 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5290 | Unfortunately we have to find it now to decide. */ | |
5291 | ||
5292 | while (t > text) | |
5293 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5294 | t[-1] == ' ' || t[-1] == ':' || | |
5295 | t[-1] == '(' || t[-1] == ')') | |
5296 | --t; | |
5297 | else | |
5298 | break; | |
5299 | ||
5300 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5301 | p = t - 2; /* Method name detected. */ |
5302 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5303 | } |
5304 | } | |
5305 | break; | |
5306 | } | |
5307 | } | |
5308 | return p; | |
5309 | } | |
5310 | ||
edb3359d | 5311 | static void |
eb3ff9a5 PA |
5312 | completion_list_add_fields (completion_tracker &tracker, |
5313 | struct symbol *sym, | |
b5ec771e | 5314 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5315 | const char *text, const char *word) |
edb3359d DJ |
5316 | { |
5317 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5318 | { | |
5319 | struct type *t = SYMBOL_TYPE (sym); | |
5320 | enum type_code c = TYPE_CODE (t); | |
5321 | int j; | |
5322 | ||
5323 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5324 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5325 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5326 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5327 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5328 | lookup_name, text, word); |
edb3359d DJ |
5329 | } |
5330 | } | |
5331 | ||
f9d67a22 PA |
5332 | /* See symtab.h. */ |
5333 | ||
5334 | bool | |
5335 | symbol_is_function_or_method (symbol *sym) | |
5336 | { | |
5337 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5338 | { | |
5339 | case TYPE_CODE_FUNC: | |
5340 | case TYPE_CODE_METHOD: | |
5341 | return true; | |
5342 | default: | |
5343 | return false; | |
5344 | } | |
5345 | } | |
5346 | ||
5347 | /* See symtab.h. */ | |
5348 | ||
5349 | bool | |
5350 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5351 | { | |
5352 | switch (MSYMBOL_TYPE (msymbol)) | |
5353 | { | |
5354 | case mst_text: | |
5355 | case mst_text_gnu_ifunc: | |
5356 | case mst_solib_trampoline: | |
5357 | case mst_file_text: | |
5358 | return true; | |
5359 | default: | |
5360 | return false; | |
5361 | } | |
5362 | } | |
5363 | ||
ca31ab1d PA |
5364 | /* See symtab.h. */ |
5365 | ||
5366 | bound_minimal_symbol | |
5367 | find_gnu_ifunc (const symbol *sym) | |
5368 | { | |
5369 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5370 | return {}; | |
5371 | ||
5372 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5373 | symbol_name_match_type::SEARCH_NAME); | |
5374 | struct objfile *objfile = symbol_objfile (sym); | |
5375 | ||
2b1ffcfd | 5376 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5377 | minimal_symbol *ifunc = NULL; |
5378 | ||
5379 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5380 | [&] (minimal_symbol *minsym) | |
5381 | { | |
5382 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5383 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5384 | { |
f50776aa PA |
5385 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5386 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5387 | { | |
5388 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5389 | msym_addr |
5390 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5391 | msym_addr, | |
5392 | current_top_target ()); | |
f50776aa PA |
5393 | } |
5394 | if (msym_addr == address) | |
5395 | { | |
5396 | ifunc = minsym; | |
5397 | return true; | |
5398 | } | |
ca31ab1d PA |
5399 | } |
5400 | return false; | |
5401 | }); | |
5402 | ||
5403 | if (ifunc != NULL) | |
5404 | return {ifunc, objfile}; | |
5405 | return {}; | |
5406 | } | |
5407 | ||
e11c72c7 GB |
5408 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5409 | ||
5410 | static void | |
5411 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5412 | completion_tracker &tracker, |
f9d67a22 | 5413 | complete_symbol_mode mode, |
b5ec771e | 5414 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5415 | const char *text, const char *word, |
5416 | enum type_code code) | |
5417 | { | |
5418 | struct symbol *sym; | |
5419 | const struct block *b; | |
5420 | struct block_iterator iter; | |
5421 | int i; | |
5422 | ||
ff6fa247 GB |
5423 | if (cust == NULL) |
5424 | return; | |
5425 | ||
e11c72c7 GB |
5426 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5427 | { | |
5428 | QUIT; | |
5429 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5430 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5431 | { | |
f9d67a22 PA |
5432 | if (completion_skip_symbol (mode, sym)) |
5433 | continue; | |
5434 | ||
e11c72c7 GB |
5435 | if (code == TYPE_CODE_UNDEF |
5436 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5437 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5438 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5439 | lookup_name, |
e11c72c7 GB |
5440 | text, word); |
5441 | } | |
5442 | } | |
5443 | } | |
5444 | ||
eb3ff9a5 PA |
5445 | void |
5446 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5447 | (completion_tracker &tracker, complete_symbol_mode mode, |
5448 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5449 | const char *text, const char *word, |
5450 | const char *break_on, enum type_code code) | |
c906108c | 5451 | { |
41d27058 JB |
5452 | /* Problem: All of the symbols have to be copied because readline |
5453 | frees them. I'm not going to worry about this; hopefully there | |
5454 | won't be that many. */ | |
5455 | ||
de4f826b | 5456 | struct symbol *sym; |
3977b71f | 5457 | const struct block *b; |
edb3359d | 5458 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5459 | struct block_iterator iter; |
c906108c | 5460 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5461 | const char *sym_text; |
c906108c | 5462 | |
41d27058 | 5463 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5464 | if (mode == complete_symbol_mode::LINESPEC) |
5465 | sym_text = text; | |
5466 | else | |
c906108c | 5467 | { |
6f937416 | 5468 | const char *p; |
c906108c | 5469 | char quote_found; |
6f937416 | 5470 | const char *quote_pos = NULL; |
c906108c SS |
5471 | |
5472 | /* First see if this is a quoted string. */ | |
5473 | quote_found = '\0'; | |
5474 | for (p = text; *p != '\0'; ++p) | |
5475 | { | |
5476 | if (quote_found != '\0') | |
5477 | { | |
5478 | if (*p == quote_found) | |
5479 | /* Found close quote. */ | |
5480 | quote_found = '\0'; | |
5481 | else if (*p == '\\' && p[1] == quote_found) | |
5482 | /* A backslash followed by the quote character | |
c5aa993b | 5483 | doesn't end the string. */ |
c906108c SS |
5484 | ++p; |
5485 | } | |
5486 | else if (*p == '\'' || *p == '"') | |
5487 | { | |
5488 | quote_found = *p; | |
5489 | quote_pos = p; | |
5490 | } | |
5491 | } | |
5492 | if (quote_found == '\'') | |
5493 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5494 | sym_text = quote_pos + 1; | |
5495 | else if (quote_found == '"') | |
5496 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5497 | to complete it any other way. */ |
c94fdfd0 | 5498 | { |
ef0b411a | 5499 | return; |
c94fdfd0 | 5500 | } |
c906108c SS |
5501 | else |
5502 | { | |
5503 | /* It is not a quoted string. Break it based on the characters | |
5504 | which are in symbols. */ | |
5505 | while (p > text) | |
5506 | { | |
95699ff0 | 5507 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5508 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5509 | --p; |
5510 | else | |
5511 | break; | |
5512 | } | |
5513 | sym_text = p; | |
5514 | } | |
5515 | } | |
5516 | ||
1b026119 | 5517 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5518 | |
c906108c SS |
5519 | /* At this point scan through the misc symbol vectors and add each |
5520 | symbol you find to the list. Eventually we want to ignore | |
5521 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5522 | handled by the psymtab code below). */ |
c906108c | 5523 | |
2f68a895 TT |
5524 | if (code == TYPE_CODE_UNDEF) |
5525 | { | |
2030c079 | 5526 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5527 | { |
7932255d | 5528 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5529 | { |
5530 | QUIT; | |
9af17804 | 5531 | |
5325b9bf TT |
5532 | if (completion_skip_symbol (mode, msymbol)) |
5533 | continue; | |
f9d67a22 | 5534 | |
5325b9bf TT |
5535 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5536 | sym_text, word); | |
eb3ff9a5 | 5537 | |
5325b9bf TT |
5538 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5539 | sym_text, word); | |
5540 | } | |
2f68a895 TT |
5541 | } |
5542 | } | |
c906108c | 5543 | |
e11c72c7 | 5544 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5545 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5546 | { |
b669c953 | 5547 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5548 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5549 | sym_text, word, code); | |
5550 | } | |
e11c72c7 | 5551 | |
14bc53a8 PA |
5552 | /* Look through the partial symtabs for all symbols which begin by |
5553 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5554 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5555 | lookup_name, |
5556 | NULL, | |
14bc53a8 PA |
5557 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5558 | { | |
5559 | add_symtab_completions (symtab, | |
f9d67a22 | 5560 | tracker, mode, lookup_name, |
1b026119 | 5561 | sym_text, word, code); |
14bc53a8 PA |
5562 | }, |
5563 | ALL_DOMAIN); | |
e11c72c7 | 5564 | |
c906108c | 5565 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5566 | complete on local vars). Also catch fields of types defined in |
5567 | this places which match our text string. Only complete on types | |
c378eb4e | 5568 | visible from current context. */ |
edb3359d DJ |
5569 | |
5570 | b = get_selected_block (0); | |
5571 | surrounding_static_block = block_static_block (b); | |
5572 | surrounding_global_block = block_global_block (b); | |
5573 | if (surrounding_static_block != NULL) | |
5574 | while (b != surrounding_static_block) | |
5575 | { | |
5576 | QUIT; | |
c906108c | 5577 | |
edb3359d DJ |
5578 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5579 | { | |
2f68a895 TT |
5580 | if (code == TYPE_CODE_UNDEF) |
5581 | { | |
b5ec771e | 5582 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5583 | sym_text, word); |
b5ec771e | 5584 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5585 | sym_text, word); |
2f68a895 TT |
5586 | } |
5587 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5588 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5589 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5590 | sym_text, word); |
edb3359d | 5591 | } |
c5aa993b | 5592 | |
edb3359d DJ |
5593 | /* Stop when we encounter an enclosing function. Do not stop for |
5594 | non-inlined functions - the locals of the enclosing function | |
5595 | are in scope for a nested function. */ | |
5596 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5597 | break; | |
5598 | b = BLOCK_SUPERBLOCK (b); | |
5599 | } | |
c906108c | 5600 | |
edb3359d | 5601 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5602 | |
2f68a895 TT |
5603 | if (code == TYPE_CODE_UNDEF) |
5604 | { | |
5605 | if (surrounding_static_block != NULL) | |
5606 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5607 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5608 | sym_text, word); |
edb3359d | 5609 | |
2f68a895 TT |
5610 | if (surrounding_global_block != NULL) |
5611 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5612 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5613 | sym_text, word); |
2f68a895 | 5614 | } |
c906108c | 5615 | |
2f68a895 TT |
5616 | /* Skip macros if we are completing a struct tag -- arguable but |
5617 | usually what is expected. */ | |
5618 | if (current_language->la_macro_expansion == macro_expansion_c | |
5619 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5620 | { |
f6c2623e | 5621 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5622 | |
14bc53a8 PA |
5623 | /* This adds a macro's name to the current completion list. */ |
5624 | auto add_macro_name = [&] (const char *macro_name, | |
5625 | const macro_definition *, | |
5626 | macro_source_file *, | |
5627 | int) | |
5628 | { | |
1b026119 PA |
5629 | completion_list_add_name (tracker, language_c, macro_name, |
5630 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5631 | }; |
5632 | ||
9a044a89 TT |
5633 | /* Add any macros visible in the default scope. Note that this |
5634 | may yield the occasional wrong result, because an expression | |
5635 | might be evaluated in a scope other than the default. For | |
5636 | example, if the user types "break file:line if <TAB>", the | |
5637 | resulting expression will be evaluated at "file:line" -- but | |
5638 | at there does not seem to be a way to detect this at | |
5639 | completion time. */ | |
5640 | scope = default_macro_scope (); | |
5641 | if (scope) | |
f6c2623e TT |
5642 | macro_for_each_in_scope (scope->file, scope->line, |
5643 | add_macro_name); | |
9a044a89 TT |
5644 | |
5645 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5646 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5647 | } |
ef0b411a GB |
5648 | } |
5649 | ||
eb3ff9a5 PA |
5650 | void |
5651 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5652 | complete_symbol_mode mode, |
b5ec771e | 5653 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5654 | const char *text, const char *word, |
5655 | enum type_code code) | |
f55ee35c | 5656 | { |
c6756f62 | 5657 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5658 | name_match_type, |
eb3ff9a5 PA |
5659 | text, word, "", |
5660 | code); | |
f55ee35c JK |
5661 | } |
5662 | ||
eb3ff9a5 PA |
5663 | /* Collect all symbols (regardless of class) which begin by matching |
5664 | TEXT. */ | |
41d27058 | 5665 | |
eb3ff9a5 PA |
5666 | void |
5667 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5668 | complete_symbol_mode mode, |
b5ec771e | 5669 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5670 | const char *text, const char *word) |
41d27058 | 5671 | { |
c6756f62 | 5672 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5673 | name_match_type, |
eb3ff9a5 PA |
5674 | text, word, |
5675 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5676 | } |
5677 | ||
eb3ff9a5 PA |
5678 | /* Like collect_symbol_completion_matches, but only collect |
5679 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5680 | |
eb3ff9a5 PA |
5681 | void |
5682 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5683 | const char *text, const char *word, | |
5684 | enum type_code code) | |
2f68a895 | 5685 | { |
c6756f62 | 5686 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5687 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5688 | |
2f68a895 TT |
5689 | gdb_assert (code == TYPE_CODE_UNION |
5690 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5691 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5692 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5693 | name_match_type, |
eb3ff9a5 | 5694 | text, word, code); |
41d27058 JB |
5695 | } |
5696 | ||
eb3ff9a5 PA |
5697 | /* Like collect_symbol_completion_matches, but collects a list of |
5698 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5699 | |
eb3ff9a5 PA |
5700 | void |
5701 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5702 | complete_symbol_mode mode, |
b5ec771e | 5703 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5704 | const char *text, const char *word, |
5705 | const char *srcfile) | |
c94fdfd0 | 5706 | { |
c94fdfd0 | 5707 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5708 | const char *sym_text; |
c94fdfd0 EZ |
5709 | |
5710 | /* Now look for the symbol we are supposed to complete on. | |
5711 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5712 | if (mode == complete_symbol_mode::LINESPEC) |
5713 | sym_text = text; | |
5714 | else | |
c94fdfd0 | 5715 | { |
6f937416 | 5716 | const char *p; |
c94fdfd0 | 5717 | char quote_found; |
6f937416 | 5718 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5719 | |
5720 | /* First see if this is a quoted string. */ | |
5721 | quote_found = '\0'; | |
5722 | for (p = text; *p != '\0'; ++p) | |
5723 | { | |
5724 | if (quote_found != '\0') | |
5725 | { | |
5726 | if (*p == quote_found) | |
5727 | /* Found close quote. */ | |
5728 | quote_found = '\0'; | |
5729 | else if (*p == '\\' && p[1] == quote_found) | |
5730 | /* A backslash followed by the quote character | |
5731 | doesn't end the string. */ | |
5732 | ++p; | |
5733 | } | |
5734 | else if (*p == '\'' || *p == '"') | |
5735 | { | |
5736 | quote_found = *p; | |
5737 | quote_pos = p; | |
5738 | } | |
5739 | } | |
5740 | if (quote_found == '\'') | |
5741 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5742 | sym_text = quote_pos + 1; | |
5743 | else if (quote_found == '"') | |
5744 | /* A double-quoted string is never a symbol, nor does it make sense | |
5745 | to complete it any other way. */ | |
5746 | { | |
eb3ff9a5 | 5747 | return; |
c94fdfd0 EZ |
5748 | } |
5749 | else | |
5750 | { | |
69636828 AF |
5751 | /* Not a quoted string. */ |
5752 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5753 | } |
5754 | } | |
5755 | ||
1b026119 | 5756 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5757 | |
8f14146e PA |
5758 | /* Go through symtabs for SRCFILE and check the externs and statics |
5759 | for symbols which match. */ | |
5760 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5761 | { |
8f14146e | 5762 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5763 | tracker, mode, lookup_name, |
1b026119 | 5764 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5765 | return false; |
5766 | }); | |
e27852be DE |
5767 | } |
5768 | ||
c94fdfd0 EZ |
5769 | /* A helper function for make_source_files_completion_list. It adds |
5770 | another file name to a list of possible completions, growing the | |
5771 | list as necessary. */ | |
5772 | ||
5773 | static void | |
6f937416 | 5774 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5775 | completion_list *list) |
c94fdfd0 | 5776 | { |
60a20c19 | 5777 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5778 | } |
5779 | ||
5780 | static int | |
5781 | not_interesting_fname (const char *fname) | |
5782 | { | |
5783 | static const char *illegal_aliens[] = { | |
5784 | "_globals_", /* inserted by coff_symtab_read */ | |
5785 | NULL | |
5786 | }; | |
5787 | int i; | |
5788 | ||
5789 | for (i = 0; illegal_aliens[i]; i++) | |
5790 | { | |
0ba1096a | 5791 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5792 | return 1; |
5793 | } | |
5794 | return 0; | |
5795 | } | |
5796 | ||
ccefe4c4 TT |
5797 | /* An object of this type is passed as the user_data argument to |
5798 | map_partial_symbol_filenames. */ | |
5799 | struct add_partial_filename_data | |
5800 | { | |
9fdc877b | 5801 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5802 | const char *text; |
5803 | const char *word; | |
ccefe4c4 | 5804 | int text_len; |
eb3ff9a5 | 5805 | completion_list *list; |
ccefe4c4 TT |
5806 | }; |
5807 | ||
5808 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5809 | |
ccefe4c4 | 5810 | static void |
2837d59e | 5811 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5812 | void *user_data) |
5813 | { | |
19ba03f4 SM |
5814 | struct add_partial_filename_data *data |
5815 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5816 | |
5817 | if (not_interesting_fname (filename)) | |
5818 | return; | |
bbf2f4df | 5819 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5820 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5821 | { |
5822 | /* This file matches for a completion; add it to the | |
5823 | current list of matches. */ | |
49c4e619 | 5824 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5825 | } |
5826 | else | |
5827 | { | |
5828 | const char *base_name = lbasename (filename); | |
433759f7 | 5829 | |
ccefe4c4 | 5830 | if (base_name != filename |
bbf2f4df | 5831 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5832 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5833 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5834 | } |
5835 | } | |
5836 | ||
eb3ff9a5 | 5837 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5838 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5839 | program. */ |
c94fdfd0 | 5840 | |
eb3ff9a5 | 5841 | completion_list |
6f937416 | 5842 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5843 | { |
c94fdfd0 | 5844 | size_t text_len = strlen (text); |
eb3ff9a5 | 5845 | completion_list list; |
31889e00 | 5846 | const char *base_name; |
ccefe4c4 | 5847 | struct add_partial_filename_data datum; |
c94fdfd0 | 5848 | |
c94fdfd0 EZ |
5849 | if (!have_full_symbols () && !have_partial_symbols ()) |
5850 | return list; | |
5851 | ||
bbf2f4df | 5852 | filename_seen_cache filenames_seen; |
9fdc877b | 5853 | |
2030c079 | 5854 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5855 | { |
b669c953 | 5856 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5857 | { |
8b31193a TT |
5858 | for (symtab *s : compunit_filetabs (cu)) |
5859 | { | |
5860 | if (not_interesting_fname (s->filename)) | |
5861 | continue; | |
5862 | if (!filenames_seen.seen (s->filename) | |
5863 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5864 | { | |
5865 | /* This file matches for a completion; add it to the current | |
5866 | list of matches. */ | |
5867 | add_filename_to_list (s->filename, text, word, &list); | |
5868 | } | |
5869 | else | |
5870 | { | |
5871 | /* NOTE: We allow the user to type a base name when the | |
5872 | debug info records leading directories, but not the other | |
5873 | way around. This is what subroutines of breakpoint | |
5874 | command do when they parse file names. */ | |
5875 | base_name = lbasename (s->filename); | |
5876 | if (base_name != s->filename | |
5877 | && !filenames_seen.seen (base_name) | |
5878 | && filename_ncmp (base_name, text, text_len) == 0) | |
5879 | add_filename_to_list (base_name, text, word, &list); | |
5880 | } | |
5881 | } | |
c94fdfd0 EZ |
5882 | } |
5883 | } | |
5884 | ||
bbf2f4df | 5885 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5886 | datum.text = text; |
5887 | datum.word = word; | |
5888 | datum.text_len = text_len; | |
5889 | datum.list = &list; | |
bb4142cf DE |
5890 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5891 | 0 /*need_fullname*/); | |
9fdc877b | 5892 | |
c94fdfd0 EZ |
5893 | return list; |
5894 | } | |
c906108c | 5895 | \f |
51cc5b07 | 5896 | /* Track MAIN */ |
32ac0d11 TT |
5897 | |
5898 | /* Return the "main_info" object for the current program space. If | |
5899 | the object has not yet been created, create it and fill in some | |
5900 | default values. */ | |
5901 | ||
5902 | static struct main_info * | |
5903 | get_main_info (void) | |
5904 | { | |
a32ad8c5 | 5905 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
5906 | |
5907 | if (info == NULL) | |
5908 | { | |
3d548a53 TT |
5909 | /* It may seem strange to store the main name in the progspace |
5910 | and also in whatever objfile happens to see a main name in | |
5911 | its debug info. The reason for this is mainly historical: | |
5912 | gdb returned "main" as the name even if no function named | |
5913 | "main" was defined the program; and this approach lets us | |
5914 | keep compatibility. */ | |
a32ad8c5 | 5915 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
5916 | } |
5917 | ||
5918 | return info; | |
5919 | } | |
5920 | ||
3d548a53 | 5921 | static void |
9e6c82ad | 5922 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5923 | { |
32ac0d11 TT |
5924 | struct main_info *info = get_main_info (); |
5925 | ||
5926 | if (info->name_of_main != NULL) | |
51cc5b07 | 5927 | { |
32ac0d11 TT |
5928 | xfree (info->name_of_main); |
5929 | info->name_of_main = NULL; | |
5930 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5931 | } |
5932 | if (name != NULL) | |
5933 | { | |
32ac0d11 TT |
5934 | info->name_of_main = xstrdup (name); |
5935 | info->language_of_main = lang; | |
51cc5b07 AC |
5936 | } |
5937 | } | |
5938 | ||
ea53e89f JB |
5939 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5940 | accordingly. */ | |
5941 | ||
5942 | static void | |
5943 | find_main_name (void) | |
5944 | { | |
cd6c7346 | 5945 | const char *new_main_name; |
3d548a53 TT |
5946 | |
5947 | /* First check the objfiles to see whether a debuginfo reader has | |
5948 | picked up the appropriate main name. Historically the main name | |
5949 | was found in a more or less random way; this approach instead | |
5950 | relies on the order of objfile creation -- which still isn't | |
5951 | guaranteed to get the correct answer, but is just probably more | |
5952 | accurate. */ | |
2030c079 | 5953 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5954 | { |
5955 | if (objfile->per_bfd->name_of_main != NULL) | |
5956 | { | |
5957 | set_main_name (objfile->per_bfd->name_of_main, | |
5958 | objfile->per_bfd->language_of_main); | |
5959 | return; | |
5960 | } | |
5961 | } | |
ea53e89f JB |
5962 | |
5963 | /* Try to see if the main procedure is in Ada. */ | |
5964 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5965 | be to add a new method in the language vector, and call this | |
5966 | method for each language until one of them returns a non-empty | |
5967 | name. This would allow us to remove this hard-coded call to | |
5968 | an Ada function. It is not clear that this is a better approach | |
5969 | at this point, because all methods need to be written in a way | |
c378eb4e | 5970 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5971 | important that a method does not return a wrong name for the main |
5972 | procedure if the main procedure is actually written in a different | |
5973 | language. It is easy to guaranty this with Ada, since we use a | |
5974 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5975 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5976 | be guarantied for languages such as C, for instance. This suggests |
5977 | that order of call for these methods becomes important, which means | |
5978 | a more complicated approach. */ | |
5979 | new_main_name = ada_main_name (); | |
5980 | if (new_main_name != NULL) | |
9af17804 | 5981 | { |
9e6c82ad | 5982 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5983 | return; |
5984 | } | |
5985 | ||
63778547 IB |
5986 | new_main_name = d_main_name (); |
5987 | if (new_main_name != NULL) | |
5988 | { | |
5989 | set_main_name (new_main_name, language_d); | |
5990 | return; | |
5991 | } | |
5992 | ||
a766d390 DE |
5993 | new_main_name = go_main_name (); |
5994 | if (new_main_name != NULL) | |
5995 | { | |
9e6c82ad | 5996 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5997 | return; |
5998 | } | |
5999 | ||
cd6c7346 PM |
6000 | new_main_name = pascal_main_name (); |
6001 | if (new_main_name != NULL) | |
9af17804 | 6002 | { |
9e6c82ad | 6003 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
6004 | return; |
6005 | } | |
6006 | ||
ea53e89f JB |
6007 | /* The languages above didn't identify the name of the main procedure. |
6008 | Fallback to "main". */ | |
9e6c82ad | 6009 | set_main_name ("main", language_unknown); |
ea53e89f JB |
6010 | } |
6011 | ||
cd215b2e TT |
6012 | /* See symtab.h. */ |
6013 | ||
6014 | const char * | |
6015 | main_name () | |
51cc5b07 | 6016 | { |
32ac0d11 TT |
6017 | struct main_info *info = get_main_info (); |
6018 | ||
6019 | if (info->name_of_main == NULL) | |
ea53e89f JB |
6020 | find_main_name (); |
6021 | ||
32ac0d11 | 6022 | return info->name_of_main; |
51cc5b07 AC |
6023 | } |
6024 | ||
9e6c82ad TT |
6025 | /* Return the language of the main function. If it is not known, |
6026 | return language_unknown. */ | |
6027 | ||
6028 | enum language | |
6029 | main_language (void) | |
6030 | { | |
32ac0d11 TT |
6031 | struct main_info *info = get_main_info (); |
6032 | ||
6033 | if (info->name_of_main == NULL) | |
6034 | find_main_name (); | |
6035 | ||
6036 | return info->language_of_main; | |
9e6c82ad TT |
6037 | } |
6038 | ||
ea53e89f JB |
6039 | /* Handle ``executable_changed'' events for the symtab module. */ |
6040 | ||
6041 | static void | |
781b42b0 | 6042 | symtab_observer_executable_changed (void) |
ea53e89f JB |
6043 | { |
6044 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 6045 | set_main_name (NULL, language_unknown); |
ea53e89f | 6046 | } |
51cc5b07 | 6047 | |
a6c727b2 DJ |
6048 | /* Return 1 if the supplied producer string matches the ARM RealView |
6049 | compiler (armcc). */ | |
6050 | ||
ececd218 | 6051 | bool |
a6c727b2 DJ |
6052 | producer_is_realview (const char *producer) |
6053 | { | |
6054 | static const char *const arm_idents[] = { | |
6055 | "ARM C Compiler, ADS", | |
6056 | "Thumb C Compiler, ADS", | |
6057 | "ARM C++ Compiler, ADS", | |
6058 | "Thumb C++ Compiler, ADS", | |
6059 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6060 | "ARM C/C++ Compiler, RVCT" | |
6061 | }; | |
6062 | int i; | |
6063 | ||
6064 | if (producer == NULL) | |
ececd218 | 6065 | return false; |
a6c727b2 DJ |
6066 | |
6067 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6068 | if (startswith (producer, arm_idents[i])) |
ececd218 | 6069 | return true; |
a6c727b2 | 6070 | |
ececd218 | 6071 | return false; |
a6c727b2 | 6072 | } |
ed0616c6 | 6073 | |
f1e6e072 TT |
6074 | \f |
6075 | ||
6076 | /* The next index to hand out in response to a registration request. */ | |
6077 | ||
6078 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6079 | ||
6080 | /* The maximum number of "aclass" registrations we support. This is | |
6081 | constant for convenience. */ | |
6082 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6083 | ||
6084 | /* The objects representing the various "aclass" values. The elements | |
6085 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6086 | elements are those registered at gdb initialization time. */ | |
6087 | ||
6088 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6089 | ||
6090 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6091 | so that it can be const. */ | |
6092 | ||
6093 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6094 | ||
6095 | /* Make sure we saved enough room in struct symbol. */ | |
6096 | ||
6097 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6098 | ||
6099 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6100 | is the ops vector associated with this index. This returns the new | |
6101 | index, which should be used as the aclass_index field for symbols | |
6102 | of this type. */ | |
6103 | ||
6104 | int | |
6105 | register_symbol_computed_impl (enum address_class aclass, | |
6106 | const struct symbol_computed_ops *ops) | |
6107 | { | |
6108 | int result = next_aclass_value++; | |
6109 | ||
6110 | gdb_assert (aclass == LOC_COMPUTED); | |
6111 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6112 | symbol_impl[result].aclass = aclass; | |
6113 | symbol_impl[result].ops_computed = ops; | |
6114 | ||
24d6c2a0 TT |
6115 | /* Sanity check OPS. */ |
6116 | gdb_assert (ops != NULL); | |
6117 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6118 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6119 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6120 | gdb_assert (ops->read_variable != NULL); |
6121 | ||
f1e6e072 TT |
6122 | return result; |
6123 | } | |
6124 | ||
6125 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6126 | OPS is the ops vector associated with this index. This returns the | |
6127 | new index, which should be used as the aclass_index field for symbols | |
6128 | of this type. */ | |
6129 | ||
6130 | int | |
6131 | register_symbol_block_impl (enum address_class aclass, | |
6132 | const struct symbol_block_ops *ops) | |
6133 | { | |
6134 | int result = next_aclass_value++; | |
6135 | ||
6136 | gdb_assert (aclass == LOC_BLOCK); | |
6137 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6138 | symbol_impl[result].aclass = aclass; | |
6139 | symbol_impl[result].ops_block = ops; | |
6140 | ||
6141 | /* Sanity check OPS. */ | |
6142 | gdb_assert (ops != NULL); | |
6143 | gdb_assert (ops->find_frame_base_location != NULL); | |
6144 | ||
6145 | return result; | |
6146 | } | |
6147 | ||
6148 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6149 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6150 | this index. This returns the new index, which should be used as | |
6151 | the aclass_index field for symbols of this type. */ | |
6152 | ||
6153 | int | |
6154 | register_symbol_register_impl (enum address_class aclass, | |
6155 | const struct symbol_register_ops *ops) | |
6156 | { | |
6157 | int result = next_aclass_value++; | |
6158 | ||
6159 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6160 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6161 | symbol_impl[result].aclass = aclass; | |
6162 | symbol_impl[result].ops_register = ops; | |
6163 | ||
6164 | return result; | |
6165 | } | |
6166 | ||
6167 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6168 | address_class. */ | |
6169 | ||
6170 | static void | |
6171 | initialize_ordinary_address_classes (void) | |
6172 | { | |
6173 | int i; | |
6174 | ||
6175 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6176 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6177 | } |
6178 | ||
6179 | \f | |
6180 | ||
1994afbf DE |
6181 | /* Helper function to initialize the fields of an objfile-owned symbol. |
6182 | It assumed that *SYM is already all zeroes. */ | |
6183 | ||
6184 | static void | |
6185 | initialize_objfile_symbol_1 (struct symbol *sym) | |
6186 | { | |
6187 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
6188 | SYMBOL_SECTION (sym) = -1; | |
6189 | } | |
6190 | ||
6191 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
6192 | |
6193 | void | |
38bf1463 | 6194 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
6195 | { |
6196 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 6197 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
6198 | } |
6199 | ||
6200 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6201 | obstack. */ | |
6202 | ||
6203 | struct symbol * | |
6204 | allocate_symbol (struct objfile *objfile) | |
6205 | { | |
6206 | struct symbol *result; | |
6207 | ||
6208 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 6209 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6210 | |
6211 | return result; | |
6212 | } | |
6213 | ||
6214 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6215 | obstack. */ | |
6216 | ||
6217 | struct template_symbol * | |
6218 | allocate_template_symbol (struct objfile *objfile) | |
6219 | { | |
6220 | struct template_symbol *result; | |
6221 | ||
6222 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 6223 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6224 | |
6225 | return result; | |
6226 | } | |
6227 | ||
08be3fe3 DE |
6228 | /* See symtab.h. */ |
6229 | ||
6230 | struct objfile * | |
6231 | symbol_objfile (const struct symbol *symbol) | |
6232 | { | |
1994afbf DE |
6233 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6234 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6235 | } |
6236 | ||
6237 | /* See symtab.h. */ | |
6238 | ||
6239 | struct gdbarch * | |
6240 | symbol_arch (const struct symbol *symbol) | |
6241 | { | |
1994afbf DE |
6242 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6243 | return symbol->owner.arch; | |
6244 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6245 | } |
6246 | ||
6247 | /* See symtab.h. */ | |
6248 | ||
6249 | struct symtab * | |
6250 | symbol_symtab (const struct symbol *symbol) | |
6251 | { | |
1994afbf DE |
6252 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6253 | return symbol->owner.symtab; | |
08be3fe3 DE |
6254 | } |
6255 | ||
6256 | /* See symtab.h. */ | |
6257 | ||
6258 | void | |
6259 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6260 | { | |
1994afbf DE |
6261 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6262 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6263 | } |
6264 | ||
4b610737 TT |
6265 | /* See symtab.h. */ |
6266 | ||
6267 | CORE_ADDR | |
6268 | get_symbol_address (const struct symbol *sym) | |
6269 | { | |
6270 | gdb_assert (sym->maybe_copied); | |
6271 | gdb_assert (SYMBOL_CLASS (sym) == LOC_STATIC); | |
6272 | ||
6273 | const char *linkage_name = SYMBOL_LINKAGE_NAME (sym); | |
6274 | ||
6275 | for (objfile *objfile : current_program_space->objfiles ()) | |
6276 | { | |
6277 | bound_minimal_symbol minsym | |
6278 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6279 | if (minsym.minsym != nullptr) | |
6280 | return BMSYMBOL_VALUE_ADDRESS (minsym); | |
6281 | } | |
6282 | return sym->ginfo.value.address; | |
6283 | } | |
6284 | ||
6285 | /* See symtab.h. */ | |
6286 | ||
6287 | CORE_ADDR | |
6288 | get_msymbol_address (struct objfile *objf, const struct minimal_symbol *minsym) | |
6289 | { | |
6290 | gdb_assert (minsym->maybe_copied); | |
6291 | gdb_assert ((objf->flags & OBJF_MAINLINE) == 0); | |
6292 | ||
6293 | const char *linkage_name = MSYMBOL_LINKAGE_NAME (minsym); | |
6294 | ||
6295 | for (objfile *objfile : current_program_space->objfiles ()) | |
6296 | { | |
6297 | if ((objfile->flags & OBJF_MAINLINE) != 0) | |
6298 | { | |
6299 | bound_minimal_symbol found | |
6300 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6301 | if (found.minsym != nullptr) | |
6302 | return BMSYMBOL_VALUE_ADDRESS (found); | |
6303 | } | |
6304 | } | |
6305 | return (minsym->value.address | |
6306 | + ANOFFSET (objf->section_offsets, minsym->section)); | |
6307 | } | |
6308 | ||
e623cf5d TT |
6309 | \f |
6310 | ||
c906108c | 6311 | void |
fba45db2 | 6312 | _initialize_symtab (void) |
c906108c | 6313 | { |
60cfcb20 AB |
6314 | cmd_list_element *c; |
6315 | ||
f1e6e072 TT |
6316 | initialize_ordinary_address_classes (); |
6317 | ||
60cfcb20 AB |
6318 | c = add_info ("variables", info_variables_command, |
6319 | info_print_args_help (_("\ | |
12615cba | 6320 | All global and static variable names or those matching REGEXPs.\n\ |
4acfdd20 | 6321 | Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6322 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6323 | _("global and static variables"), |
6324 | true)); | |
60cfcb20 | 6325 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6326 | if (dbx_commands) |
60cfcb20 AB |
6327 | { |
6328 | c = add_com ("whereis", class_info, info_variables_command, | |
6329 | info_print_args_help (_("\ | |
12615cba | 6330 | All global and static variable names, or those matching REGEXPs.\n\ |
4acfdd20 | 6331 | Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6332 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6333 | _("global and static variables"), |
6334 | true)); | |
60cfcb20 AB |
6335 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
6336 | } | |
c906108c | 6337 | |
60cfcb20 AB |
6338 | c = add_info ("functions", info_functions_command, |
6339 | info_print_args_help (_("\ | |
12615cba | 6340 | All function names or those matching REGEXPs.\n\ |
4acfdd20 | 6341 | Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6342 | Prints the functions.\n"), |
4acfdd20 AB |
6343 | _("functions"), |
6344 | true)); | |
60cfcb20 | 6345 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6346 | |
a8eab7c6 AB |
6347 | c = add_info ("types", info_types_command, _("\ |
6348 | All type names, or those matching REGEXP.\n\ | |
6349 | Usage: info types [-q] [REGEXP]\n\ | |
6350 | Print information about all types matching REGEXP, or all types if no\n\ | |
6351 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6352 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6353 | |
28cd9371 PW |
6354 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6355 | ||
6356 | static std::string info_sources_help | |
6357 | = gdb::option::build_help (_("\ | |
6358 | All source files in the program or those matching REGEXP.\n\ | |
6359 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6360 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6361 | \n\ | |
6362 | Options:\n\ | |
6363 | %OPTIONS%"), | |
6364 | info_sources_opts); | |
6365 | ||
6366 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6367 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c SS |
6368 | |
6369 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6370 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6371 | |
717d2f5a JB |
6372 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6373 | multiple_symbols_modes, &multiple_symbols_mode, | |
6374 | _("\ | |
590042fc | 6375 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6376 | Show how the debugger handles ambiguities in expressions."), _("\ |
6377 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6378 | NULL, NULL, &setlist, &showlist); | |
6379 | ||
c011a4f4 DE |
6380 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6381 | &basenames_may_differ, _("\ | |
6382 | Set whether a source file may have multiple base names."), _("\ | |
6383 | Show whether a source file may have multiple base names."), _("\ | |
6384 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6385 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6386 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6387 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6388 | but it allows the same file be known by more than one base name.\n\ | |
6389 | If not set (the default), all source files are assumed to have just\n\ | |
6390 | one base name, and gdb will do file name comparisons more efficiently."), | |
6391 | NULL, NULL, | |
6392 | &setlist, &showlist); | |
6393 | ||
db0fec5c DE |
6394 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6395 | _("Set debugging of symbol table creation."), | |
6396 | _("Show debugging of symbol table creation."), _("\ | |
6397 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6398 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6399 | A value greater than 1 provides more verbose information."), | |
6400 | NULL, | |
6401 | NULL, | |
6402 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6403 | |
cc485e62 DE |
6404 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6405 | _("\ | |
6406 | Set debugging of symbol lookup."), _("\ | |
6407 | Show debugging of symbol lookup."), _("\ | |
6408 | When enabled (non-zero), symbol lookups are logged."), | |
6409 | NULL, NULL, | |
6410 | &setdebuglist, &showdebuglist); | |
6411 | ||
f57d2163 DE |
6412 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6413 | &new_symbol_cache_size, | |
6414 | _("Set the size of the symbol cache."), | |
6415 | _("Show the size of the symbol cache."), _("\ | |
6416 | The size of the symbol cache.\n\ | |
6417 | If zero then the symbol cache is disabled."), | |
6418 | set_symbol_cache_size_handler, NULL, | |
6419 | &maintenance_set_cmdlist, | |
6420 | &maintenance_show_cmdlist); | |
6421 | ||
6422 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6423 | _("Dump the symbol cache for each program space."), | |
6424 | &maintenanceprintlist); | |
6425 | ||
6426 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6427 | maintenance_print_symbol_cache_statistics, | |
6428 | _("Print symbol cache statistics for each program space."), | |
6429 | &maintenanceprintlist); | |
6430 | ||
6431 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6432 | maintenance_flush_symbol_cache, | |
6433 | _("Flush the symbol cache for each program space."), | |
6434 | &maintenancelist); | |
6435 | ||
76727919 TT |
6436 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6437 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6438 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6439 | } |