Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
88987551 | 30 | #include "gdb_regex.h" |
c906108c SS |
31 | #include "expression.h" |
32 | #include "language.h" | |
33 | #include "demangle.h" | |
34 | #include "inferior.h" | |
0378c332 | 35 | #include "source.h" |
a7fdf62f | 36 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 37 | #include "objc-lang.h" |
6aecb9c2 | 38 | #include "d-lang.h" |
1f8173e6 | 39 | #include "ada-lang.h" |
a766d390 | 40 | #include "go-lang.h" |
cd6c7346 | 41 | #include "p-lang.h" |
ff013f42 | 42 | #include "addrmap.h" |
529480d0 | 43 | #include "cli/cli-utils.h" |
1ed9f74e | 44 | #include "cli/cli-style.h" |
cce0e923 | 45 | #include "fnmatch.h" |
2de7ced7 | 46 | #include "hashtab.h" |
12615cba | 47 | #include "typeprint.h" |
2de7ced7 | 48 | |
04ea0df1 | 49 | #include "gdb_obstack.h" |
fe898f56 | 50 | #include "block.h" |
de4f826b | 51 | #include "dictionary.h" |
c906108c SS |
52 | |
53 | #include <sys/types.h> | |
54 | #include <fcntl.h> | |
53ce3c39 | 55 | #include <sys/stat.h> |
c906108c | 56 | #include <ctype.h> |
015a42b4 | 57 | #include "cp-abi.h" |
71c25dea | 58 | #include "cp-support.h" |
76727919 | 59 | #include "observable.h" |
3a40aaa0 | 60 | #include "solist.h" |
9a044a89 TT |
61 | #include "macrotab.h" |
62 | #include "macroscope.h" | |
c906108c | 63 | |
270140bd | 64 | #include "parser-defs.h" |
ef0b411a | 65 | #include "completer.h" |
5ed8105e | 66 | #include "progspace-and-thread.h" |
268a13a5 | 67 | #include "gdbsupport/gdb_optional.h" |
bbf2f4df | 68 | #include "filename-seen-cache.h" |
46a62268 | 69 | #include "arch-utils.h" |
b9c04fb2 | 70 | #include <algorithm> |
268a13a5 | 71 | #include "gdbsupport/pathstuff.h" |
ccefe4c4 | 72 | |
ff6c39cf | 73 | /* Forward declarations for local functions. */ |
c906108c | 74 | |
0b39b52e | 75 | static void rbreak_command (const char *, int); |
c906108c | 76 | |
f8eba3c6 | 77 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 78 | |
d12307c1 PMR |
79 | static struct block_symbol |
80 | lookup_symbol_aux (const char *name, | |
de63c46b | 81 | symbol_name_match_type match_type, |
d12307c1 PMR |
82 | const struct block *block, |
83 | const domain_enum domain, | |
84 | enum language language, | |
85 | struct field_of_this_result *); | |
fba7f19c | 86 | |
e4051eeb | 87 | static |
d12307c1 | 88 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 89 | symbol_name_match_type match_type, |
d12307c1 PMR |
90 | const struct block *block, |
91 | const domain_enum domain, | |
92 | enum language language); | |
8155455b | 93 | |
d12307c1 | 94 | static struct block_symbol |
c32e6a04 CB |
95 | lookup_symbol_in_objfile (struct objfile *objfile, |
96 | enum block_enum block_index, | |
fe2a438d | 97 | const char *name, const domain_enum domain); |
c906108c | 98 | |
32ac0d11 TT |
99 | /* Type of the data stored on the program space. */ |
100 | ||
101 | struct main_info | |
102 | { | |
a32ad8c5 TT |
103 | main_info () = default; |
104 | ||
105 | ~main_info () | |
106 | { | |
107 | xfree (name_of_main); | |
108 | } | |
109 | ||
32ac0d11 TT |
110 | /* Name of "main". */ |
111 | ||
a32ad8c5 | 112 | char *name_of_main = nullptr; |
32ac0d11 TT |
113 | |
114 | /* Language of "main". */ | |
115 | ||
a32ad8c5 | 116 | enum language language_of_main = language_unknown; |
32ac0d11 TT |
117 | }; |
118 | ||
a32ad8c5 TT |
119 | /* Program space key for finding name and language of "main". */ |
120 | ||
121 | static const program_space_key<main_info> main_progspace_key; | |
122 | ||
f57d2163 DE |
123 | /* The default symbol cache size. |
124 | There is no extra cpu cost for large N (except when flushing the cache, | |
125 | which is rare). The value here is just a first attempt. A better default | |
126 | value may be higher or lower. A prime number can make up for a bad hash | |
127 | computation, so that's why the number is what it is. */ | |
128 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
129 | ||
130 | /* The maximum symbol cache size. | |
131 | There's no method to the decision of what value to use here, other than | |
132 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
133 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
134 | ||
135 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
136 | symbol in any objfile. */ | |
d12307c1 PMR |
137 | #define SYMBOL_LOOKUP_FAILED \ |
138 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
139 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
140 | |
141 | /* Recording lookups that don't find the symbol is just as important, if not | |
142 | more so, than recording found symbols. */ | |
143 | ||
144 | enum symbol_cache_slot_state | |
145 | { | |
146 | SYMBOL_SLOT_UNUSED, | |
147 | SYMBOL_SLOT_NOT_FOUND, | |
148 | SYMBOL_SLOT_FOUND | |
149 | }; | |
150 | ||
52059ffd TT |
151 | struct symbol_cache_slot |
152 | { | |
153 | enum symbol_cache_slot_state state; | |
154 | ||
155 | /* The objfile that was current when the symbol was looked up. | |
156 | This is only needed for global blocks, but for simplicity's sake | |
157 | we allocate the space for both. If data shows the extra space used | |
158 | for static blocks is a problem, we can split things up then. | |
159 | ||
160 | Global blocks need cache lookup to include the objfile context because | |
161 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
162 | which can traverse objfiles in, effectively, any order, depending on | |
163 | the current objfile, thus affecting which symbol is found. Normally, | |
164 | only the current objfile is searched first, and then the rest are | |
165 | searched in recorded order; but putting cache lookup inside | |
166 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
167 | Instead we just make the current objfile part of the context of | |
168 | cache lookup. This means we can record the same symbol multiple times, | |
169 | each with a different "current objfile" that was in effect when the | |
170 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
171 | const struct objfile *objfile_context; | |
172 | ||
173 | union | |
174 | { | |
d12307c1 | 175 | struct block_symbol found; |
52059ffd TT |
176 | struct |
177 | { | |
178 | char *name; | |
179 | domain_enum domain; | |
180 | } not_found; | |
181 | } value; | |
182 | }; | |
183 | ||
f57d2163 DE |
184 | /* Symbols don't specify global vs static block. |
185 | So keep them in separate caches. */ | |
186 | ||
187 | struct block_symbol_cache | |
188 | { | |
189 | unsigned int hits; | |
190 | unsigned int misses; | |
191 | unsigned int collisions; | |
192 | ||
193 | /* SYMBOLS is a variable length array of this size. | |
194 | One can imagine that in general one cache (global/static) should be a | |
195 | fraction of the size of the other, but there's no data at the moment | |
196 | on which to decide. */ | |
197 | unsigned int size; | |
198 | ||
52059ffd | 199 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
200 | }; |
201 | ||
202 | /* The symbol cache. | |
203 | ||
204 | Searching for symbols in the static and global blocks over multiple objfiles | |
205 | again and again can be slow, as can searching very big objfiles. This is a | |
206 | simple cache to improve symbol lookup performance, which is critical to | |
207 | overall gdb performance. | |
208 | ||
209 | Symbols are hashed on the name, its domain, and block. | |
210 | They are also hashed on their objfile for objfile-specific lookups. */ | |
211 | ||
212 | struct symbol_cache | |
213 | { | |
3017b94d TT |
214 | symbol_cache () = default; |
215 | ||
216 | ~symbol_cache () | |
217 | { | |
218 | xfree (global_symbols); | |
219 | xfree (static_symbols); | |
220 | } | |
221 | ||
222 | struct block_symbol_cache *global_symbols = nullptr; | |
223 | struct block_symbol_cache *static_symbols = nullptr; | |
f57d2163 DE |
224 | }; |
225 | ||
3017b94d TT |
226 | /* Program space key for finding its symbol cache. */ |
227 | ||
228 | static const program_space_key<symbol_cache> symbol_cache_key; | |
229 | ||
45cfd468 | 230 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 231 | unsigned int symtab_create_debug = 0; |
45cfd468 | 232 | |
cc485e62 DE |
233 | /* When non-zero, print debugging messages related to symbol lookup. */ |
234 | unsigned int symbol_lookup_debug = 0; | |
235 | ||
f57d2163 DE |
236 | /* The size of the cache is staged here. */ |
237 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
238 | ||
239 | /* The current value of the symbol cache size. | |
240 | This is saved so that if the user enters a value too big we can restore | |
241 | the original value from here. */ | |
242 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
243 | ||
491144b5 | 244 | /* True if a file may be known by two different basenames. |
c011a4f4 DE |
245 | This is the uncommon case, and significantly slows down gdb. |
246 | Default set to "off" to not slow down the common case. */ | |
491144b5 | 247 | bool basenames_may_differ = false; |
c011a4f4 | 248 | |
717d2f5a JB |
249 | /* Allow the user to configure the debugger behavior with respect |
250 | to multiple-choice menus when more than one symbol matches during | |
251 | a symbol lookup. */ | |
252 | ||
7fc830e2 MK |
253 | const char multiple_symbols_ask[] = "ask"; |
254 | const char multiple_symbols_all[] = "all"; | |
255 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 256 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
257 | { |
258 | multiple_symbols_ask, | |
259 | multiple_symbols_all, | |
260 | multiple_symbols_cancel, | |
261 | NULL | |
262 | }; | |
263 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
264 | ||
265 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
266 | ||
267 | const char * | |
268 | multiple_symbols_select_mode (void) | |
269 | { | |
270 | return multiple_symbols_mode; | |
271 | } | |
272 | ||
20c681d1 DE |
273 | /* Return the name of a domain_enum. */ |
274 | ||
275 | const char * | |
276 | domain_name (domain_enum e) | |
277 | { | |
278 | switch (e) | |
279 | { | |
280 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
281 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
282 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 283 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
284 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
285 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
286 | default: gdb_assert_not_reached ("bad domain_enum"); | |
287 | } | |
288 | } | |
289 | ||
290 | /* Return the name of a search_domain . */ | |
291 | ||
292 | const char * | |
293 | search_domain_name (enum search_domain e) | |
294 | { | |
295 | switch (e) | |
296 | { | |
297 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
298 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
299 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
300 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
301 | default: gdb_assert_not_reached ("bad search_domain"); | |
302 | } | |
303 | } | |
304 | ||
43f3e411 | 305 | /* See symtab.h. */ |
db0fec5c | 306 | |
43f3e411 DE |
307 | struct symtab * |
308 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 309 | { |
43f3e411 | 310 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 311 | |
43f3e411 DE |
312 | /* The primary file symtab is the first one in the list. */ |
313 | return COMPUNIT_FILETABS (cust); | |
314 | } | |
315 | ||
316 | /* See symtab.h. */ | |
317 | ||
318 | enum language | |
319 | compunit_language (const struct compunit_symtab *cust) | |
320 | { | |
321 | struct symtab *symtab = compunit_primary_filetab (cust); | |
322 | ||
323 | /* The language of the compunit symtab is the language of its primary | |
324 | source file. */ | |
325 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
326 | } |
327 | ||
1ed9f74e PW |
328 | /* See symtab.h. */ |
329 | ||
330 | bool | |
331 | minimal_symbol::data_p () const | |
332 | { | |
333 | return type == mst_data | |
334 | || type == mst_bss | |
335 | || type == mst_abs | |
336 | || type == mst_file_data | |
337 | || type == mst_file_bss; | |
338 | } | |
339 | ||
340 | /* See symtab.h. */ | |
341 | ||
342 | bool | |
343 | minimal_symbol::text_p () const | |
344 | { | |
345 | return type == mst_text | |
346 | || type == mst_text_gnu_ifunc | |
347 | || type == mst_data_gnu_ifunc | |
348 | || type == mst_slot_got_plt | |
349 | || type == mst_solib_trampoline | |
350 | || type == mst_file_text; | |
351 | } | |
352 | ||
4aac40c8 TT |
353 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
354 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
355 | describes what we advertise). Returns true if they match, false |
356 | otherwise. */ | |
4aac40c8 TT |
357 | |
358 | int | |
b57a636e | 359 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
360 | { |
361 | int len = strlen (filename); | |
b57a636e | 362 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
363 | |
364 | if (len < search_len) | |
365 | return 0; | |
366 | ||
367 | /* The tail of FILENAME must match. */ | |
368 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
369 | return 0; | |
370 | ||
371 | /* Either the names must completely match, or the character | |
372 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
373 | directory separator. |
374 | ||
af529f8f JK |
375 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
376 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
377 | absolute path. The sama applies for "c:\file.c" possibly | |
378 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
379 | ||
d84fca2c JK |
380 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
381 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
382 | to put the "c:file.c" name into debug info. Such compatibility | |
383 | works only on GDB built for DOS host. */ | |
4aac40c8 | 384 | return (len == search_len |
af529f8f JK |
385 | || (!IS_ABSOLUTE_PATH (search_name) |
386 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
387 | || (HAS_DRIVE_SPEC (filename) |
388 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
389 | } | |
390 | ||
cce0e923 DE |
391 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
392 | Heads up on the order of the arguments. They match the order of | |
393 | compare_filenames_for_search, but it's the opposite of the order of | |
394 | arguments to gdb_filename_fnmatch. */ | |
395 | ||
396 | int | |
397 | compare_glob_filenames_for_search (const char *filename, | |
398 | const char *search_name) | |
399 | { | |
400 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
401 | all /s have to be explicitly specified. */ | |
402 | int file_path_elements = count_path_elements (filename); | |
403 | int search_path_elements = count_path_elements (search_name); | |
404 | ||
405 | if (search_path_elements > file_path_elements) | |
406 | return 0; | |
407 | ||
408 | if (IS_ABSOLUTE_PATH (search_name)) | |
409 | { | |
410 | return (search_path_elements == file_path_elements | |
411 | && gdb_filename_fnmatch (search_name, filename, | |
412 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
413 | } | |
414 | ||
415 | { | |
416 | const char *file_to_compare | |
417 | = strip_leading_path_elements (filename, | |
418 | file_path_elements - search_path_elements); | |
419 | ||
420 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
421 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
422 | } | |
423 | } | |
424 | ||
f8eba3c6 TT |
425 | /* Check for a symtab of a specific name by searching some symtabs. |
426 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 427 | |
b2d23133 DE |
428 | If NAME is not absolute, then REAL_PATH is NULL |
429 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
430 | ||
14bc53a8 PA |
431 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
432 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 433 | |
43f3e411 DE |
434 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
435 | Each symtab within the specified compunit symtab is also searched. | |
436 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
437 | search until the end of the list. */ |
438 | ||
14bc53a8 | 439 | bool |
f8eba3c6 | 440 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 441 | const char *real_path, |
43f3e411 | 442 | struct compunit_symtab *first, |
14bc53a8 PA |
443 | struct compunit_symtab *after_last, |
444 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 445 | { |
43f3e411 | 446 | struct compunit_symtab *cust; |
c011a4f4 | 447 | const char* base_name = lbasename (name); |
1f84b619 | 448 | |
43f3e411 | 449 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 450 | { |
5accd1a0 | 451 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 452 | { |
43f3e411 DE |
453 | if (compare_filenames_for_search (s->filename, name)) |
454 | { | |
14bc53a8 PA |
455 | if (callback (s)) |
456 | return true; | |
43f3e411 DE |
457 | continue; |
458 | } | |
a94e8645 | 459 | |
43f3e411 DE |
460 | /* Before we invoke realpath, which can get expensive when many |
461 | files are involved, do a quick comparison of the basenames. */ | |
462 | if (! basenames_may_differ | |
463 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
464 | continue; | |
a94e8645 | 465 | |
43f3e411 | 466 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 467 | { |
14bc53a8 PA |
468 | if (callback (s)) |
469 | return true; | |
a94e8645 DE |
470 | continue; |
471 | } | |
43f3e411 DE |
472 | |
473 | /* If the user gave us an absolute path, try to find the file in | |
474 | this symtab and use its absolute path. */ | |
475 | if (real_path != NULL) | |
476 | { | |
477 | const char *fullname = symtab_to_fullname (s); | |
478 | ||
479 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
480 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
481 | if (FILENAME_CMP (real_path, fullname) == 0) | |
482 | { | |
14bc53a8 PA |
483 | if (callback (s)) |
484 | return true; | |
43f3e411 DE |
485 | continue; |
486 | } | |
487 | } | |
a94e8645 | 488 | } |
f8eba3c6 | 489 | } |
58d370e0 | 490 | |
14bc53a8 | 491 | return false; |
f8eba3c6 TT |
492 | } |
493 | ||
494 | /* Check for a symtab of a specific name; first in symtabs, then in | |
495 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
496 | in the symtab filename will also work. | |
497 | ||
14bc53a8 PA |
498 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
499 | true, the search stops. */ | |
f8eba3c6 TT |
500 | |
501 | void | |
502 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 503 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 504 | { |
14bc53a8 | 505 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
506 | |
507 | /* Here we are interested in canonicalizing an absolute path, not | |
508 | absolutizing a relative path. */ | |
509 | if (IS_ABSOLUTE_PATH (name)) | |
510 | { | |
14278e1f | 511 | real_path = gdb_realpath (name); |
14bc53a8 | 512 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
513 | } |
514 | ||
2030c079 | 515 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
516 | { |
517 | if (iterate_over_some_symtabs (name, real_path.get (), | |
518 | objfile->compunit_symtabs, NULL, | |
519 | callback)) | |
f8eba3c6 | 520 | return; |
14bc53a8 | 521 | } |
f8eba3c6 | 522 | |
c906108c SS |
523 | /* Same search rules as above apply here, but now we look thru the |
524 | psymtabs. */ | |
525 | ||
2030c079 | 526 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
527 | { |
528 | if (objfile->sf | |
529 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
530 | name, | |
531 | real_path.get (), | |
532 | callback)) | |
f8eba3c6 | 533 | return; |
14bc53a8 | 534 | } |
c906108c | 535 | } |
f8eba3c6 TT |
536 | |
537 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
538 | symtab, or NULL. */ | |
539 | ||
540 | struct symtab * | |
541 | lookup_symtab (const char *name) | |
542 | { | |
543 | struct symtab *result = NULL; | |
544 | ||
14bc53a8 PA |
545 | iterate_over_symtabs (name, [&] (symtab *symtab) |
546 | { | |
547 | result = symtab; | |
548 | return true; | |
549 | }); | |
550 | ||
f8eba3c6 TT |
551 | return result; |
552 | } | |
553 | ||
c906108c SS |
554 | \f |
555 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
556 | full method name, which consist of the class name (from T), the unadorned | |
557 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 558 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
559 | |
560 | char * | |
fba45db2 | 561 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
562 | { |
563 | int mangled_name_len; | |
564 | char *mangled_name; | |
565 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
566 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 567 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 568 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 569 | const char *newname = TYPE_NAME (type); |
c906108c SS |
570 | |
571 | /* Does the form of physname indicate that it is the full mangled name | |
572 | of a constructor (not just the args)? */ | |
573 | int is_full_physname_constructor; | |
574 | ||
575 | int is_constructor; | |
015a42b4 | 576 | int is_destructor = is_destructor_name (physname); |
c906108c | 577 | /* Need a new type prefix. */ |
e6a959d6 PA |
578 | const char *const_prefix = method->is_const ? "C" : ""; |
579 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
580 | char buf[20]; |
581 | int len = (newname == NULL ? 0 : strlen (newname)); | |
582 | ||
43630227 PS |
583 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
584 | or an operator name. */ | |
585 | if ((physname[0] == '_' && physname[1] == 'Z') | |
586 | || is_operator_name (field_name)) | |
235d1e03 EZ |
587 | return xstrdup (physname); |
588 | ||
015a42b4 | 589 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 590 | |
3e43a32a MS |
591 | is_constructor = is_full_physname_constructor |
592 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
593 | |
594 | if (!is_destructor) | |
61012eef | 595 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
596 | |
597 | if (is_destructor || is_full_physname_constructor) | |
598 | { | |
c5aa993b JM |
599 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
600 | strcpy (mangled_name, physname); | |
c906108c SS |
601 | return mangled_name; |
602 | } | |
603 | ||
604 | if (len == 0) | |
605 | { | |
8c042590 | 606 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
607 | } |
608 | else if (physname[0] == 't' || physname[0] == 'Q') | |
609 | { | |
610 | /* The physname for template and qualified methods already includes | |
c5aa993b | 611 | the class name. */ |
8c042590 | 612 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
613 | newname = NULL; |
614 | len = 0; | |
615 | } | |
616 | else | |
617 | { | |
8c042590 PM |
618 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
619 | volatile_prefix, len); | |
c906108c SS |
620 | } |
621 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 622 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 623 | |
433759f7 MS |
624 | mangled_name = (char *) xmalloc (mangled_name_len); |
625 | if (is_constructor) | |
626 | mangled_name[0] = '\0'; | |
627 | else | |
628 | strcpy (mangled_name, field_name); | |
629 | ||
c906108c SS |
630 | strcat (mangled_name, buf); |
631 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
632 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 633 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
634 | if (newname != NULL) |
635 | strcat (mangled_name, newname); | |
636 | ||
637 | strcat (mangled_name, physname); | |
638 | return (mangled_name); | |
639 | } | |
12af6855 | 640 | |
b250c185 | 641 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 642 | correctly allocated. */ |
eca864fe | 643 | |
b250c185 SW |
644 | void |
645 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 646 | const char *name, |
ccde22c0 | 647 | struct obstack *obstack) |
b250c185 | 648 | { |
7c5fdd25 | 649 | if (gsymbol->language == language_ada) |
f85f34ed TT |
650 | { |
651 | if (name == NULL) | |
652 | { | |
653 | gsymbol->ada_mangled = 0; | |
654 | gsymbol->language_specific.obstack = obstack; | |
655 | } | |
656 | else | |
657 | { | |
658 | gsymbol->ada_mangled = 1; | |
615b3f62 | 659 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
660 | } |
661 | } | |
29df156d | 662 | else |
615b3f62 | 663 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
664 | } |
665 | ||
666 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 667 | |
0d5cff50 | 668 | const char * |
b250c185 SW |
669 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
670 | { | |
7c5fdd25 | 671 | if (gsymbol->language == language_ada) |
f85f34ed TT |
672 | { |
673 | if (!gsymbol->ada_mangled) | |
674 | return NULL; | |
675 | /* Fall through. */ | |
676 | } | |
677 | ||
615b3f62 | 678 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
679 | } |
680 | ||
12af6855 | 681 | \f |
89aad1f9 | 682 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 683 | depending upon the language for the symbol. */ |
eca864fe | 684 | |
89aad1f9 | 685 | void |
33e5013e | 686 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
687 | enum language language, |
688 | struct obstack *obstack) | |
89aad1f9 EZ |
689 | { |
690 | gsymbol->language = language; | |
7c5fdd25 DE |
691 | if (gsymbol->language == language_cplus |
692 | || gsymbol->language == language_d | |
a766d390 | 693 | || gsymbol->language == language_go |
f55ee35c JK |
694 | || gsymbol->language == language_objc |
695 | || gsymbol->language == language_fortran) | |
89aad1f9 | 696 | { |
f85f34ed TT |
697 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
698 | } | |
699 | else if (gsymbol->language == language_ada) | |
700 | { | |
701 | gdb_assert (gsymbol->ada_mangled == 0); | |
702 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 703 | } |
89aad1f9 EZ |
704 | else |
705 | { | |
706 | memset (&gsymbol->language_specific, 0, | |
707 | sizeof (gsymbol->language_specific)); | |
708 | } | |
709 | } | |
710 | ||
2de7ced7 DJ |
711 | /* Functions to initialize a symbol's mangled name. */ |
712 | ||
04a679b8 TT |
713 | /* Objects of this type are stored in the demangled name hash table. */ |
714 | struct demangled_name_entry | |
715 | { | |
9d2ceabe | 716 | const char *mangled; |
e99f9db0 | 717 | ENUM_BITFIELD(language) language : LANGUAGE_BITS; |
04a679b8 TT |
718 | char demangled[1]; |
719 | }; | |
720 | ||
721 | /* Hash function for the demangled name hash. */ | |
eca864fe | 722 | |
04a679b8 TT |
723 | static hashval_t |
724 | hash_demangled_name_entry (const void *data) | |
725 | { | |
19ba03f4 SM |
726 | const struct demangled_name_entry *e |
727 | = (const struct demangled_name_entry *) data; | |
433759f7 | 728 | |
04a679b8 TT |
729 | return htab_hash_string (e->mangled); |
730 | } | |
731 | ||
732 | /* Equality function for the demangled name hash. */ | |
eca864fe | 733 | |
04a679b8 TT |
734 | static int |
735 | eq_demangled_name_entry (const void *a, const void *b) | |
736 | { | |
19ba03f4 SM |
737 | const struct demangled_name_entry *da |
738 | = (const struct demangled_name_entry *) a; | |
739 | const struct demangled_name_entry *db | |
740 | = (const struct demangled_name_entry *) b; | |
433759f7 | 741 | |
04a679b8 TT |
742 | return strcmp (da->mangled, db->mangled) == 0; |
743 | } | |
744 | ||
2de7ced7 DJ |
745 | /* Create the hash table used for demangled names. Each hash entry is |
746 | a pair of strings; one for the mangled name and one for the demangled | |
747 | name. The entry is hashed via just the mangled name. */ | |
748 | ||
749 | static void | |
0f14768a | 750 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
751 | { |
752 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 753 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
754 | Choosing a much larger table size wastes memory, and saves only about |
755 | 1% in symbol reading. */ | |
756 | ||
db92718b | 757 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
04a679b8 | 758 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
db92718b | 759 | NULL, xcalloc, xfree)); |
2de7ced7 | 760 | } |
12af6855 | 761 | |
2de7ced7 | 762 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
763 | language of that symbol. If the language is set to language_auto, |
764 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
765 | then set the language appropriately. The returned name is allocated |
766 | by the demangler and should be xfree'd. */ | |
12af6855 | 767 | |
2de7ced7 DJ |
768 | static char * |
769 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
770 | const char *mangled) | |
12af6855 | 771 | { |
12af6855 | 772 | char *demangled = NULL; |
8b302db8 | 773 | int i; |
12af6855 JB |
774 | |
775 | if (gsymbol->language == language_unknown) | |
776 | gsymbol->language = language_auto; | |
1bae87b9 | 777 | |
8b302db8 | 778 | if (gsymbol->language != language_auto) |
1bae87b9 | 779 | { |
8b302db8 TT |
780 | const struct language_defn *lang = language_def (gsymbol->language); |
781 | ||
782 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
783 | return demangled; | |
6aecb9c2 | 784 | } |
8b302db8 TT |
785 | |
786 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 787 | { |
8b302db8 TT |
788 | enum language l = (enum language) i; |
789 | const struct language_defn *lang = language_def (l); | |
790 | ||
791 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 792 | { |
8b302db8 | 793 | gsymbol->language = l; |
a766d390 DE |
794 | return demangled; |
795 | } | |
796 | } | |
797 | ||
2de7ced7 DJ |
798 | return NULL; |
799 | } | |
800 | ||
980cae7a | 801 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
802 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
803 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
804 | NUL-terminated, then this function assumes that NAME is already | |
805 | correctly saved (either permanently or with a lifetime tied to the | |
806 | objfile), and it will not be copied. | |
807 | ||
808 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 809 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 810 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
811 | |
812 | void | |
813 | symbol_set_names (struct general_symbol_info *gsymbol, | |
67547d89 | 814 | const char *linkage_name, int len, bool copy_name, |
1d94a5a3 | 815 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 816 | { |
04a679b8 | 817 | struct demangled_name_entry **slot; |
980cae7a DC |
818 | /* A 0-terminated copy of the linkage name. */ |
819 | const char *linkage_name_copy; | |
04a679b8 | 820 | struct demangled_name_entry entry; |
2de7ced7 | 821 | |
b06ead72 JB |
822 | if (gsymbol->language == language_ada) |
823 | { | |
824 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 825 | we can save some space by not storing the demangled name. */ |
04a679b8 | 826 | if (!copy_name) |
0d5cff50 | 827 | gsymbol->name = linkage_name; |
04a679b8 TT |
828 | else |
829 | { | |
224c3ddb SM |
830 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
831 | len + 1); | |
0d5cff50 DE |
832 | |
833 | memcpy (name, linkage_name, len); | |
834 | name[len] = '\0'; | |
835 | gsymbol->name = name; | |
04a679b8 | 836 | } |
84a1243b | 837 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
838 | |
839 | return; | |
840 | } | |
841 | ||
84a1243b | 842 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 843 | create_demangled_names_hash (per_bfd); |
04a679b8 | 844 | |
9c37b5ae | 845 | if (linkage_name[len] != '\0') |
2de7ced7 | 846 | { |
980cae7a DC |
847 | char *alloc_name; |
848 | ||
9c37b5ae | 849 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 850 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 851 | alloc_name[len] = '\0'; |
980cae7a DC |
852 | |
853 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
854 | } |
855 | else | |
9c37b5ae | 856 | linkage_name_copy = linkage_name; |
2de7ced7 | 857 | |
9c37b5ae | 858 | entry.mangled = linkage_name_copy; |
04a679b8 | 859 | slot = ((struct demangled_name_entry **) |
db92718b | 860 | htab_find_slot (per_bfd->demangled_names_hash.get (), |
04a679b8 | 861 | &entry, INSERT)); |
2de7ced7 DJ |
862 | |
863 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
864 | if (*slot == NULL |
865 | /* A C version of the symbol may have already snuck into the table. | |
866 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
867 | || (gsymbol->language == language_go | |
868 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 869 | { |
e99f9db0 TV |
870 | char *demangled_name_ptr |
871 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
872 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
9325300d | 873 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 874 | |
04a679b8 | 875 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 876 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
877 | mangled name saved, and we don't have a demangled name. So, |
878 | you might think we could save a little space by not recording | |
879 | this in the hash table at all. | |
880 | ||
881 | It turns out that it is actually important to still save such | |
882 | an entry in the hash table, because storing this name gives | |
705b5767 | 883 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 884 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 885 | { |
224c3ddb SM |
886 | *slot |
887 | = ((struct demangled_name_entry *) | |
888 | obstack_alloc (&per_bfd->storage_obstack, | |
889 | offsetof (struct demangled_name_entry, demangled) | |
890 | + demangled_len + 1)); | |
9c37b5ae | 891 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
892 | } |
893 | else | |
894 | { | |
9d2ceabe TT |
895 | char *mangled_ptr; |
896 | ||
04a679b8 TT |
897 | /* If we must copy the mangled name, put it directly after |
898 | the demangled name so we can have a single | |
899 | allocation. */ | |
224c3ddb SM |
900 | *slot |
901 | = ((struct demangled_name_entry *) | |
902 | obstack_alloc (&per_bfd->storage_obstack, | |
903 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 904 | + len + demangled_len + 2)); |
9d2ceabe | 905 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 906 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 907 | (*slot)->mangled = mangled_ptr; |
04a679b8 | 908 | } |
e99f9db0 | 909 | (*slot)->language = gsymbol->language; |
04a679b8 | 910 | |
980cae7a | 911 | if (demangled_name != NULL) |
e99f9db0 | 912 | strcpy ((*slot)->demangled, demangled_name.get ()); |
2de7ced7 | 913 | else |
04a679b8 | 914 | (*slot)->demangled[0] = '\0'; |
2de7ced7 | 915 | } |
e99f9db0 TV |
916 | else if (gsymbol->language == language_unknown |
917 | || gsymbol->language == language_auto) | |
918 | gsymbol->language = (*slot)->language; | |
2de7ced7 | 919 | |
9c37b5ae | 920 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 921 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 922 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 923 | &per_bfd->storage_obstack); |
2de7ced7 | 924 | else |
84a1243b | 925 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
926 | } |
927 | ||
22abf04a DC |
928 | /* Return the source code name of a symbol. In languages where |
929 | demangling is necessary, this is the demangled name. */ | |
930 | ||
0d5cff50 | 931 | const char * |
22abf04a DC |
932 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
933 | { | |
9af17804 | 934 | switch (gsymbol->language) |
22abf04a | 935 | { |
1f8173e6 | 936 | case language_cplus: |
6aecb9c2 | 937 | case language_d: |
a766d390 | 938 | case language_go: |
1f8173e6 | 939 | case language_objc: |
f55ee35c | 940 | case language_fortran: |
b250c185 SW |
941 | if (symbol_get_demangled_name (gsymbol) != NULL) |
942 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
943 | break; |
944 | case language_ada: | |
f85f34ed | 945 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
946 | default: |
947 | break; | |
22abf04a | 948 | } |
1f8173e6 | 949 | return gsymbol->name; |
22abf04a DC |
950 | } |
951 | ||
9cc0d196 | 952 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 953 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 954 | |
0d5cff50 | 955 | const char * |
df8a16a1 | 956 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 957 | { |
c6e5ee5e SDJ |
958 | const char *dem_name = NULL; |
959 | ||
9af17804 | 960 | switch (gsymbol->language) |
1f8173e6 PH |
961 | { |
962 | case language_cplus: | |
6aecb9c2 | 963 | case language_d: |
a766d390 | 964 | case language_go: |
1f8173e6 | 965 | case language_objc: |
f55ee35c | 966 | case language_fortran: |
c6e5ee5e | 967 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
968 | break; |
969 | case language_ada: | |
f85f34ed | 970 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
971 | break; |
972 | default: | |
973 | break; | |
974 | } | |
c6e5ee5e | 975 | return dem_name; |
9cc0d196 | 976 | } |
fe39c653 | 977 | |
4725b721 PH |
978 | /* Return the search name of a symbol---generally the demangled or |
979 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 980 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 981 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 982 | |
0d5cff50 | 983 | const char * |
fc062ac6 JB |
984 | symbol_search_name (const struct general_symbol_info *gsymbol) |
985 | { | |
1f8173e6 PH |
986 | if (gsymbol->language == language_ada) |
987 | return gsymbol->name; | |
988 | else | |
989 | return symbol_natural_name (gsymbol); | |
4725b721 | 990 | } |
b5ec771e PA |
991 | |
992 | /* See symtab.h. */ | |
993 | ||
994 | bool | |
995 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
996 | const lookup_name_info &name) | |
997 | { | |
998 | symbol_name_matcher_ftype *name_match | |
618daa93 | 999 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
1000 | return name_match (symbol_search_name (gsymbol), name, NULL); |
1001 | } | |
1002 | ||
c906108c SS |
1003 | \f |
1004 | ||
94277a38 DJ |
1005 | /* Return 1 if the two sections are the same, or if they could |
1006 | plausibly be copies of each other, one in an original object | |
1007 | file and another in a separated debug file. */ | |
1008 | ||
1009 | int | |
714835d5 UW |
1010 | matching_obj_sections (struct obj_section *obj_first, |
1011 | struct obj_section *obj_second) | |
94277a38 | 1012 | { |
714835d5 UW |
1013 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1014 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1015 | |
1016 | /* If they're the same section, then they match. */ | |
1017 | if (first == second) | |
1018 | return 1; | |
1019 | ||
1020 | /* If either is NULL, give up. */ | |
1021 | if (first == NULL || second == NULL) | |
1022 | return 0; | |
1023 | ||
1024 | /* This doesn't apply to absolute symbols. */ | |
1025 | if (first->owner == NULL || second->owner == NULL) | |
1026 | return 0; | |
1027 | ||
1028 | /* If they're in the same object file, they must be different sections. */ | |
1029 | if (first->owner == second->owner) | |
1030 | return 0; | |
1031 | ||
1032 | /* Check whether the two sections are potentially corresponding. They must | |
1033 | have the same size, address, and name. We can't compare section indexes, | |
1034 | which would be more reliable, because some sections may have been | |
1035 | stripped. */ | |
fd361982 | 1036 | if (bfd_section_size (first) != bfd_section_size (second)) |
94277a38 DJ |
1037 | return 0; |
1038 | ||
818f79f6 | 1039 | /* In-memory addresses may start at a different offset, relativize them. */ |
fd361982 AM |
1040 | if (bfd_section_vma (first) - bfd_get_start_address (first->owner) |
1041 | != bfd_section_vma (second) - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1042 | return 0; |
1043 | ||
fd361982 AM |
1044 | if (bfd_section_name (first) == NULL |
1045 | || bfd_section_name (second) == NULL | |
1046 | || strcmp (bfd_section_name (first), bfd_section_name (second)) != 0) | |
94277a38 DJ |
1047 | return 0; |
1048 | ||
1049 | /* Otherwise check that they are in corresponding objfiles. */ | |
1050 | ||
9d7c67bf | 1051 | struct objfile *obj = NULL; |
2030c079 | 1052 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1053 | if (objfile->obfd == first->owner) |
1054 | { | |
1055 | obj = objfile; | |
1056 | break; | |
1057 | } | |
94277a38 DJ |
1058 | gdb_assert (obj != NULL); |
1059 | ||
1060 | if (obj->separate_debug_objfile != NULL | |
1061 | && obj->separate_debug_objfile->obfd == second->owner) | |
1062 | return 1; | |
1063 | if (obj->separate_debug_objfile_backlink != NULL | |
1064 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1065 | return 1; | |
1066 | ||
1067 | return 0; | |
1068 | } | |
c5aa993b | 1069 | |
2097ae25 DE |
1070 | /* See symtab.h. */ |
1071 | ||
1072 | void | |
1073 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1074 | { |
77e371c0 | 1075 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1076 | |
1077 | /* If we know that this is not a text address, return failure. This is | |
1078 | necessary because we loop based on texthigh and textlow, which do | |
1079 | not include the data ranges. */ | |
77e371c0 | 1080 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1081 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1082 | return; |
c906108c | 1083 | |
2030c079 | 1084 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1085 | { |
1086 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1087 | |
aed57c53 TT |
1088 | if (objfile->sf) |
1089 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1090 | pc, section, 0); | |
1091 | if (cust) | |
1092 | return; | |
1093 | } | |
c906108c | 1094 | } |
c906108c | 1095 | \f |
f57d2163 DE |
1096 | /* Hash function for the symbol cache. */ |
1097 | ||
1098 | static unsigned int | |
1099 | hash_symbol_entry (const struct objfile *objfile_context, | |
1100 | const char *name, domain_enum domain) | |
1101 | { | |
1102 | unsigned int hash = (uintptr_t) objfile_context; | |
1103 | ||
1104 | if (name != NULL) | |
1105 | hash += htab_hash_string (name); | |
1106 | ||
2c26b84f DE |
1107 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1108 | to map to the same slot. */ | |
1109 | if (domain == STRUCT_DOMAIN) | |
1110 | hash += VAR_DOMAIN * 7; | |
1111 | else | |
1112 | hash += domain * 7; | |
f57d2163 DE |
1113 | |
1114 | return hash; | |
1115 | } | |
1116 | ||
1117 | /* Equality function for the symbol cache. */ | |
1118 | ||
1119 | static int | |
1120 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1121 | const struct objfile *objfile_context, | |
1122 | const char *name, domain_enum domain) | |
1123 | { | |
1124 | const char *slot_name; | |
1125 | domain_enum slot_domain; | |
1126 | ||
1127 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1128 | return 0; | |
1129 | ||
1130 | if (slot->objfile_context != objfile_context) | |
1131 | return 0; | |
1132 | ||
1133 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1134 | { | |
1135 | slot_name = slot->value.not_found.name; | |
1136 | slot_domain = slot->value.not_found.domain; | |
1137 | } | |
1138 | else | |
1139 | { | |
d12307c1 PMR |
1140 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1141 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1142 | } |
1143 | ||
1144 | /* NULL names match. */ | |
1145 | if (slot_name == NULL && name == NULL) | |
1146 | { | |
1147 | /* But there's no point in calling symbol_matches_domain in the | |
1148 | SYMBOL_SLOT_FOUND case. */ | |
1149 | if (slot_domain != domain) | |
1150 | return 0; | |
1151 | } | |
1152 | else if (slot_name != NULL && name != NULL) | |
1153 | { | |
b5ec771e PA |
1154 | /* It's important that we use the same comparison that was done |
1155 | the first time through. If the slot records a found symbol, | |
1156 | then this means using the symbol name comparison function of | |
1157 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1158 | dictionary.c. It also means using symbol_matches_domain for | |
1159 | found symbols. See block.c. | |
f57d2163 DE |
1160 | |
1161 | If the slot records a not-found symbol, then require a precise match. | |
1162 | We could still be lax with whitespace like strcmp_iw though. */ | |
1163 | ||
1164 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1165 | { | |
1166 | if (strcmp (slot_name, name) != 0) | |
1167 | return 0; | |
1168 | if (slot_domain != domain) | |
1169 | return 0; | |
1170 | } | |
1171 | else | |
1172 | { | |
d12307c1 | 1173 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1174 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1175 | |
b5ec771e | 1176 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1177 | return 0; |
b5ec771e | 1178 | |
f57d2163 DE |
1179 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1180 | slot_domain, domain)) | |
1181 | return 0; | |
1182 | } | |
1183 | } | |
1184 | else | |
1185 | { | |
1186 | /* Only one name is NULL. */ | |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | return 1; | |
1191 | } | |
1192 | ||
1193 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1194 | length array) in bytes. */ | |
1195 | ||
1196 | static size_t | |
1197 | symbol_cache_byte_size (unsigned int size) | |
1198 | { | |
1199 | return (sizeof (struct block_symbol_cache) | |
1200 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1201 | } | |
1202 | ||
1203 | /* Resize CACHE. */ | |
1204 | ||
1205 | static void | |
1206 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1207 | { | |
1208 | /* If there's no change in size, don't do anything. | |
1209 | All caches have the same size, so we can just compare with the size | |
1210 | of the global symbols cache. */ | |
1211 | if ((cache->global_symbols != NULL | |
1212 | && cache->global_symbols->size == new_size) | |
1213 | || (cache->global_symbols == NULL | |
1214 | && new_size == 0)) | |
1215 | return; | |
1216 | ||
1217 | xfree (cache->global_symbols); | |
1218 | xfree (cache->static_symbols); | |
1219 | ||
1220 | if (new_size == 0) | |
1221 | { | |
1222 | cache->global_symbols = NULL; | |
1223 | cache->static_symbols = NULL; | |
1224 | } | |
1225 | else | |
1226 | { | |
1227 | size_t total_size = symbol_cache_byte_size (new_size); | |
1228 | ||
224c3ddb SM |
1229 | cache->global_symbols |
1230 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1231 | cache->static_symbols | |
1232 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1233 | cache->global_symbols->size = new_size; |
1234 | cache->static_symbols->size = new_size; | |
1235 | } | |
1236 | } | |
1237 | ||
f57d2163 DE |
1238 | /* Return the symbol cache of PSPACE. |
1239 | Create one if it doesn't exist yet. */ | |
1240 | ||
1241 | static struct symbol_cache * | |
1242 | get_symbol_cache (struct program_space *pspace) | |
1243 | { | |
3017b94d | 1244 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1245 | |
1246 | if (cache == NULL) | |
1247 | { | |
3017b94d TT |
1248 | cache = symbol_cache_key.emplace (pspace); |
1249 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1250 | } |
1251 | ||
1252 | return cache; | |
1253 | } | |
1254 | ||
f57d2163 DE |
1255 | /* Set the size of the symbol cache in all program spaces. */ |
1256 | ||
1257 | static void | |
1258 | set_symbol_cache_size (unsigned int new_size) | |
1259 | { | |
1260 | struct program_space *pspace; | |
1261 | ||
1262 | ALL_PSPACES (pspace) | |
1263 | { | |
3017b94d | 1264 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1265 | |
1266 | /* The pspace could have been created but not have a cache yet. */ | |
1267 | if (cache != NULL) | |
1268 | resize_symbol_cache (cache, new_size); | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | /* Called when symbol-cache-size is set. */ | |
1273 | ||
1274 | static void | |
eb4c3f4a | 1275 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1276 | struct cmd_list_element *c) |
1277 | { | |
1278 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1279 | { | |
1280 | /* Restore the previous value. | |
1281 | This is the value the "show" command prints. */ | |
1282 | new_symbol_cache_size = symbol_cache_size; | |
1283 | ||
1284 | error (_("Symbol cache size is too large, max is %u."), | |
1285 | MAX_SYMBOL_CACHE_SIZE); | |
1286 | } | |
1287 | symbol_cache_size = new_symbol_cache_size; | |
1288 | ||
1289 | set_symbol_cache_size (symbol_cache_size); | |
1290 | } | |
1291 | ||
1292 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1293 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1294 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1295 | failed (and thus this one will too), or NULL if the symbol is not present | |
1296 | in the cache. | |
d0509ba4 CB |
1297 | *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which |
1298 | can be used to save the result of a full lookup attempt. */ | |
f57d2163 | 1299 | |
d12307c1 | 1300 | static struct block_symbol |
f57d2163 | 1301 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1302 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1303 | const char *name, domain_enum domain, |
1304 | struct block_symbol_cache **bsc_ptr, | |
1305 | struct symbol_cache_slot **slot_ptr) | |
1306 | { | |
1307 | struct block_symbol_cache *bsc; | |
1308 | unsigned int hash; | |
1309 | struct symbol_cache_slot *slot; | |
1310 | ||
1311 | if (block == GLOBAL_BLOCK) | |
1312 | bsc = cache->global_symbols; | |
1313 | else | |
1314 | bsc = cache->static_symbols; | |
1315 | if (bsc == NULL) | |
1316 | { | |
1317 | *bsc_ptr = NULL; | |
1318 | *slot_ptr = NULL; | |
6640a367 | 1319 | return {}; |
f57d2163 DE |
1320 | } |
1321 | ||
1322 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1323 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 | 1324 | |
d0509ba4 CB |
1325 | *bsc_ptr = bsc; |
1326 | *slot_ptr = slot; | |
1327 | ||
f57d2163 DE |
1328 | if (eq_symbol_entry (slot, objfile_context, name, domain)) |
1329 | { | |
1330 | if (symbol_lookup_debug) | |
1331 | fprintf_unfiltered (gdb_stdlog, | |
1332 | "%s block symbol cache hit%s for %s, %s\n", | |
1333 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1334 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1335 | ? " (not found)" : "", | |
1336 | name, domain_name (domain)); | |
1337 | ++bsc->hits; | |
1338 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1339 | return SYMBOL_LOOKUP_FAILED; | |
1340 | return slot->value.found; | |
1341 | } | |
1342 | ||
2c26b84f DE |
1343 | /* Symbol is not present in the cache. */ |
1344 | ||
f57d2163 DE |
1345 | if (symbol_lookup_debug) |
1346 | { | |
1347 | fprintf_unfiltered (gdb_stdlog, | |
1348 | "%s block symbol cache miss for %s, %s\n", | |
1349 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1350 | name, domain_name (domain)); | |
1351 | } | |
1352 | ++bsc->misses; | |
6640a367 | 1353 | return {}; |
f57d2163 DE |
1354 | } |
1355 | ||
1356 | /* Clear out SLOT. */ | |
1357 | ||
1358 | static void | |
1359 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1360 | { | |
1361 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1362 | xfree (slot->value.not_found.name); | |
1363 | slot->state = SYMBOL_SLOT_UNUSED; | |
1364 | } | |
1365 | ||
1366 | /* Mark SYMBOL as found in SLOT. | |
1367 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1368 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1369 | necessarily the objfile the symbol was found in. */ | |
1370 | ||
1371 | static void | |
1372 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1373 | struct symbol_cache_slot *slot, | |
1374 | struct objfile *objfile_context, | |
d12307c1 PMR |
1375 | struct symbol *symbol, |
1376 | const struct block *block) | |
f57d2163 DE |
1377 | { |
1378 | if (bsc == NULL) | |
1379 | return; | |
1380 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1381 | { | |
1382 | ++bsc->collisions; | |
1383 | symbol_cache_clear_slot (slot); | |
1384 | } | |
1385 | slot->state = SYMBOL_SLOT_FOUND; | |
1386 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1387 | slot->value.found.symbol = symbol; |
1388 | slot->value.found.block = block; | |
f57d2163 DE |
1389 | } |
1390 | ||
1391 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1392 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1393 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1394 | ||
1395 | static void | |
1396 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1397 | struct symbol_cache_slot *slot, | |
1398 | struct objfile *objfile_context, | |
1399 | const char *name, domain_enum domain) | |
1400 | { | |
1401 | if (bsc == NULL) | |
1402 | return; | |
1403 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1404 | { | |
1405 | ++bsc->collisions; | |
1406 | symbol_cache_clear_slot (slot); | |
1407 | } | |
1408 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1409 | slot->objfile_context = objfile_context; | |
1410 | slot->value.not_found.name = xstrdup (name); | |
1411 | slot->value.not_found.domain = domain; | |
1412 | } | |
1413 | ||
1414 | /* Flush the symbol cache of PSPACE. */ | |
1415 | ||
1416 | static void | |
1417 | symbol_cache_flush (struct program_space *pspace) | |
1418 | { | |
3017b94d | 1419 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1420 | int pass; |
f57d2163 DE |
1421 | |
1422 | if (cache == NULL) | |
1423 | return; | |
1424 | if (cache->global_symbols == NULL) | |
1425 | { | |
1426 | gdb_assert (symbol_cache_size == 0); | |
1427 | gdb_assert (cache->static_symbols == NULL); | |
1428 | return; | |
1429 | } | |
1430 | ||
1431 | /* If the cache is untouched since the last flush, early exit. | |
1432 | This is important for performance during the startup of a program linked | |
1433 | with 100s (or 1000s) of shared libraries. */ | |
1434 | if (cache->global_symbols->misses == 0 | |
1435 | && cache->static_symbols->misses == 0) | |
1436 | return; | |
1437 | ||
1438 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1439 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1440 | ||
1441 | for (pass = 0; pass < 2; ++pass) | |
1442 | { | |
1443 | struct block_symbol_cache *bsc | |
1444 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1445 | unsigned int i; | |
1446 | ||
1447 | for (i = 0; i < bsc->size; ++i) | |
1448 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1449 | } | |
1450 | ||
1451 | cache->global_symbols->hits = 0; | |
1452 | cache->global_symbols->misses = 0; | |
1453 | cache->global_symbols->collisions = 0; | |
1454 | cache->static_symbols->hits = 0; | |
1455 | cache->static_symbols->misses = 0; | |
1456 | cache->static_symbols->collisions = 0; | |
1457 | } | |
1458 | ||
1459 | /* Dump CACHE. */ | |
1460 | ||
1461 | static void | |
1462 | symbol_cache_dump (const struct symbol_cache *cache) | |
1463 | { | |
1464 | int pass; | |
1465 | ||
1466 | if (cache->global_symbols == NULL) | |
1467 | { | |
1468 | printf_filtered (" <disabled>\n"); | |
1469 | return; | |
1470 | } | |
1471 | ||
1472 | for (pass = 0; pass < 2; ++pass) | |
1473 | { | |
1474 | const struct block_symbol_cache *bsc | |
1475 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1476 | unsigned int i; | |
1477 | ||
1478 | if (pass == 0) | |
1479 | printf_filtered ("Global symbols:\n"); | |
1480 | else | |
1481 | printf_filtered ("Static symbols:\n"); | |
1482 | ||
1483 | for (i = 0; i < bsc->size; ++i) | |
1484 | { | |
1485 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1486 | ||
1487 | QUIT; | |
1488 | ||
1489 | switch (slot->state) | |
1490 | { | |
1491 | case SYMBOL_SLOT_UNUSED: | |
1492 | break; | |
1493 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1494 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1495 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1496 | slot->value.not_found.name, |
1497 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1498 | break; |
1499 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1500 | { |
1501 | struct symbol *found = slot->value.found.symbol; | |
1502 | const struct objfile *context = slot->objfile_context; | |
1503 | ||
1504 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1505 | host_address_to_string (context), | |
1506 | SYMBOL_PRINT_NAME (found), | |
1507 | domain_name (SYMBOL_DOMAIN (found))); | |
1508 | break; | |
1509 | } | |
f57d2163 DE |
1510 | } |
1511 | } | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | /* The "mt print symbol-cache" command. */ | |
1516 | ||
1517 | static void | |
510e5e56 | 1518 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1519 | { |
1520 | struct program_space *pspace; | |
1521 | ||
1522 | ALL_PSPACES (pspace) | |
1523 | { | |
1524 | struct symbol_cache *cache; | |
1525 | ||
1526 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1527 | pspace->num, | |
1528 | pspace->symfile_object_file != NULL | |
1529 | ? objfile_name (pspace->symfile_object_file) | |
1530 | : "(no object file)"); | |
1531 | ||
1532 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1533 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1534 | if (cache == NULL) |
1535 | printf_filtered (" <empty>\n"); | |
1536 | else | |
1537 | symbol_cache_dump (cache); | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | /* The "mt flush-symbol-cache" command. */ | |
1542 | ||
1543 | static void | |
510e5e56 | 1544 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1545 | { |
1546 | struct program_space *pspace; | |
1547 | ||
1548 | ALL_PSPACES (pspace) | |
1549 | { | |
1550 | symbol_cache_flush (pspace); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | /* Print usage statistics of CACHE. */ | |
1555 | ||
1556 | static void | |
1557 | symbol_cache_stats (struct symbol_cache *cache) | |
1558 | { | |
1559 | int pass; | |
1560 | ||
1561 | if (cache->global_symbols == NULL) | |
1562 | { | |
1563 | printf_filtered (" <disabled>\n"); | |
1564 | return; | |
1565 | } | |
1566 | ||
1567 | for (pass = 0; pass < 2; ++pass) | |
1568 | { | |
1569 | const struct block_symbol_cache *bsc | |
1570 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1571 | ||
1572 | QUIT; | |
1573 | ||
1574 | if (pass == 0) | |
1575 | printf_filtered ("Global block cache stats:\n"); | |
1576 | else | |
1577 | printf_filtered ("Static block cache stats:\n"); | |
1578 | ||
1579 | printf_filtered (" size: %u\n", bsc->size); | |
1580 | printf_filtered (" hits: %u\n", bsc->hits); | |
1581 | printf_filtered (" misses: %u\n", bsc->misses); | |
1582 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | /* The "mt print symbol-cache-statistics" command. */ | |
1587 | ||
1588 | static void | |
510e5e56 | 1589 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1590 | { |
1591 | struct program_space *pspace; | |
1592 | ||
1593 | ALL_PSPACES (pspace) | |
1594 | { | |
1595 | struct symbol_cache *cache; | |
1596 | ||
1597 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1598 | pspace->num, | |
1599 | pspace->symfile_object_file != NULL | |
1600 | ? objfile_name (pspace->symfile_object_file) | |
1601 | : "(no object file)"); | |
1602 | ||
1603 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1604 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1605 | if (cache == NULL) |
1606 | printf_filtered (" empty, no stats available\n"); | |
1607 | else | |
1608 | symbol_cache_stats (cache); | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | /* This module's 'new_objfile' observer. */ | |
1613 | ||
1614 | static void | |
1615 | symtab_new_objfile_observer (struct objfile *objfile) | |
1616 | { | |
1617 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1618 | symbol_cache_flush (current_program_space); | |
1619 | } | |
1620 | ||
1621 | /* This module's 'free_objfile' observer. */ | |
1622 | ||
1623 | static void | |
1624 | symtab_free_objfile_observer (struct objfile *objfile) | |
1625 | { | |
1626 | symbol_cache_flush (objfile->pspace); | |
1627 | } | |
1628 | \f | |
c906108c SS |
1629 | /* Debug symbols usually don't have section information. We need to dig that |
1630 | out of the minimal symbols and stash that in the debug symbol. */ | |
1631 | ||
ccefe4c4 | 1632 | void |
907fc202 UW |
1633 | fixup_section (struct general_symbol_info *ginfo, |
1634 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1635 | { |
1636 | struct minimal_symbol *msym; | |
c906108c | 1637 | |
bccdca4a UW |
1638 | /* First, check whether a minimal symbol with the same name exists |
1639 | and points to the same address. The address check is required | |
1640 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1641 | point to the function descriptor, while the debug symbol will | |
1642 | point to the actual function code. */ | |
907fc202 UW |
1643 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1644 | if (msym) | |
efd66ac6 | 1645 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1646 | else |
19e2d14b KB |
1647 | { |
1648 | /* Static, function-local variables do appear in the linker | |
1649 | (minimal) symbols, but are frequently given names that won't | |
1650 | be found via lookup_minimal_symbol(). E.g., it has been | |
1651 | observed in frv-uclinux (ELF) executables that a static, | |
1652 | function-local variable named "foo" might appear in the | |
1653 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1654 | point in attempting to extend the lookup-by-name mechanism to | |
1655 | handle this case due to the fact that there can be multiple | |
1656 | names. | |
9af17804 | 1657 | |
19e2d14b KB |
1658 | So, instead, search the section table when lookup by name has |
1659 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1660 | been relocated. If so, the relocation offset (i.e. the | |
1661 | ANOFFSET value) needs to be subtracted from these values when | |
1662 | performing the comparison. We unconditionally subtract it, | |
1663 | because, when no relocation has been performed, the ANOFFSET | |
1664 | value will simply be zero. | |
9af17804 | 1665 | |
19e2d14b KB |
1666 | The address of the symbol whose section we're fixing up HAS |
1667 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1668 | the section isn't yet known and knowing the section is | |
1669 | necessary in order to add the correct relocation value. In | |
1670 | other words, we wouldn't even be in this function (attempting | |
1671 | to compute the section) if it were already known. | |
1672 | ||
1673 | Note that it is possible to search the minimal symbols | |
1674 | (subtracting the relocation value if necessary) to find the | |
1675 | matching minimal symbol, but this is overkill and much less | |
1676 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1677 | symbol, only its section. |
1678 | ||
19e2d14b KB |
1679 | Note that this technique (of doing a section table search) |
1680 | can fail when unrelocated section addresses overlap. For | |
1681 | this reason, we still attempt a lookup by name prior to doing | |
1682 | a search of the section table. */ | |
9af17804 | 1683 | |
19e2d14b | 1684 | struct obj_section *s; |
e27d198c | 1685 | int fallback = -1; |
433759f7 | 1686 | |
19e2d14b KB |
1687 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1688 | { | |
65cf3563 | 1689 | int idx = s - objfile->sections; |
19e2d14b KB |
1690 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1691 | ||
e27d198c TT |
1692 | if (fallback == -1) |
1693 | fallback = idx; | |
1694 | ||
f1f6aadf PA |
1695 | if (obj_section_addr (s) - offset <= addr |
1696 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1697 | { |
19e2d14b KB |
1698 | ginfo->section = idx; |
1699 | return; | |
1700 | } | |
1701 | } | |
e27d198c TT |
1702 | |
1703 | /* If we didn't find the section, assume it is in the first | |
1704 | section. If there is no allocated section, then it hardly | |
1705 | matters what we pick, so just pick zero. */ | |
1706 | if (fallback == -1) | |
1707 | ginfo->section = 0; | |
1708 | else | |
1709 | ginfo->section = fallback; | |
19e2d14b | 1710 | } |
c906108c SS |
1711 | } |
1712 | ||
1713 | struct symbol * | |
fba45db2 | 1714 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1715 | { |
907fc202 UW |
1716 | CORE_ADDR addr; |
1717 | ||
c906108c SS |
1718 | if (!sym) |
1719 | return NULL; | |
1720 | ||
1994afbf DE |
1721 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1722 | return sym; | |
1723 | ||
907fc202 UW |
1724 | /* We either have an OBJFILE, or we can get at it from the sym's |
1725 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1726 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1727 | |
1728 | if (objfile == NULL) | |
08be3fe3 | 1729 | objfile = symbol_objfile (sym); |
907fc202 | 1730 | |
e27d198c TT |
1731 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1732 | return sym; | |
1733 | ||
907fc202 UW |
1734 | /* We should have an objfile by now. */ |
1735 | gdb_assert (objfile); | |
1736 | ||
1737 | switch (SYMBOL_CLASS (sym)) | |
1738 | { | |
1739 | case LOC_STATIC: | |
1740 | case LOC_LABEL: | |
907fc202 UW |
1741 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1742 | break; | |
1743 | case LOC_BLOCK: | |
2b1ffcfd | 1744 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1745 | break; |
1746 | ||
1747 | default: | |
1748 | /* Nothing else will be listed in the minsyms -- no use looking | |
1749 | it up. */ | |
1750 | return sym; | |
1751 | } | |
1752 | ||
1753 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1754 | |
1755 | return sym; | |
1756 | } | |
1757 | ||
b5ec771e PA |
1758 | /* See symtab.h. */ |
1759 | ||
1760 | demangle_for_lookup_info::demangle_for_lookup_info | |
1761 | (const lookup_name_info &lookup_name, language lang) | |
1762 | { | |
1763 | demangle_result_storage storage; | |
1764 | ||
c62446b1 PA |
1765 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1766 | { | |
1767 | gdb::unique_xmalloc_ptr<char> without_params | |
1768 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1769 | lookup_name.completion_mode ()); | |
1770 | ||
1771 | if (without_params != NULL) | |
1772 | { | |
de63c46b PA |
1773 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1774 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1775 | lang, storage); | |
c62446b1 PA |
1776 | return; |
1777 | } | |
1778 | } | |
1779 | ||
de63c46b PA |
1780 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1781 | m_demangled_name = lookup_name.name (); | |
1782 | else | |
1783 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1784 | lang, storage); | |
b5ec771e PA |
1785 | } |
1786 | ||
1787 | /* See symtab.h. */ | |
1788 | ||
1789 | const lookup_name_info & | |
1790 | lookup_name_info::match_any () | |
1791 | { | |
1792 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1793 | symbol names. */ | |
1794 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1795 | true); | |
1796 | ||
1797 | return lookup_name; | |
1798 | } | |
1799 | ||
f8eba3c6 | 1800 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1801 | lookup functions. The result can either be the input NAME |
1802 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1803 | |
2f408ecb | 1804 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1805 | Normally, Ada symbol lookups are performed using the encoded name |
1806 | rather than the demangled name, and so it might seem to make sense | |
1807 | for this function to return an encoded version of NAME. | |
1808 | Unfortunately, we cannot do this, because this function is used in | |
1809 | circumstances where it is not appropriate to try to encode NAME. | |
1810 | For instance, when displaying the frame info, we demangle the name | |
1811 | of each parameter, and then perform a symbol lookup inside our | |
1812 | function using that demangled name. In Ada, certain functions | |
1813 | have internally-generated parameters whose name contain uppercase | |
1814 | characters. Encoding those name would result in those uppercase | |
1815 | characters to become lowercase, and thus cause the symbol lookup | |
1816 | to fail. */ | |
c906108c | 1817 | |
2f408ecb | 1818 | const char * |
f8eba3c6 | 1819 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1820 | demangle_result_storage &storage) |
c906108c | 1821 | { |
9c37b5ae | 1822 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1823 | lookup, so we can always binary search. */ |
53c5240f | 1824 | if (lang == language_cplus) |
729051e6 | 1825 | { |
2f408ecb PA |
1826 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1827 | if (demangled_name != NULL) | |
1828 | return storage.set_malloc_ptr (demangled_name); | |
1829 | ||
1830 | /* If we were given a non-mangled name, canonicalize it | |
1831 | according to the language (so far only for C++). */ | |
1832 | std::string canon = cp_canonicalize_string (name); | |
1833 | if (!canon.empty ()) | |
1834 | return storage.swap_string (canon); | |
729051e6 | 1835 | } |
6aecb9c2 JB |
1836 | else if (lang == language_d) |
1837 | { | |
2f408ecb PA |
1838 | char *demangled_name = d_demangle (name, 0); |
1839 | if (demangled_name != NULL) | |
1840 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1841 | } |
a766d390 DE |
1842 | else if (lang == language_go) |
1843 | { | |
2f408ecb PA |
1844 | char *demangled_name = go_demangle (name, 0); |
1845 | if (demangled_name != NULL) | |
1846 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1847 | } |
729051e6 | 1848 | |
2f408ecb | 1849 | return name; |
f8eba3c6 TT |
1850 | } |
1851 | ||
5ffa0793 PA |
1852 | /* See symtab.h. */ |
1853 | ||
1854 | unsigned int | |
1855 | search_name_hash (enum language language, const char *search_name) | |
1856 | { | |
1857 | return language_def (language)->la_search_name_hash (search_name); | |
1858 | } | |
1859 | ||
cf901d3b | 1860 | /* See symtab.h. |
f8eba3c6 | 1861 | |
cf901d3b | 1862 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1863 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1864 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1865 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1866 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1867 | that there is C++ code below which can error(), but that probably |
1868 | doesn't affect these calls since they are looking for a known | |
1869 | variable and thus can probably assume it will never hit the C++ | |
1870 | code). */ | |
1871 | ||
d12307c1 | 1872 | struct block_symbol |
f8eba3c6 TT |
1873 | lookup_symbol_in_language (const char *name, const struct block *block, |
1874 | const domain_enum domain, enum language lang, | |
1993b719 | 1875 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1876 | { |
2f408ecb PA |
1877 | demangle_result_storage storage; |
1878 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1879 | |
de63c46b PA |
1880 | return lookup_symbol_aux (modified_name, |
1881 | symbol_name_match_type::FULL, | |
1882 | block, domain, lang, | |
2f408ecb | 1883 | is_a_field_of_this); |
fba7f19c EZ |
1884 | } |
1885 | ||
cf901d3b | 1886 | /* See symtab.h. */ |
53c5240f | 1887 | |
d12307c1 | 1888 | struct block_symbol |
53c5240f | 1889 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1890 | domain_enum domain, |
1891 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1892 | { |
1893 | return lookup_symbol_in_language (name, block, domain, | |
1894 | current_language->la_language, | |
2570f2b7 | 1895 | is_a_field_of_this); |
53c5240f PA |
1896 | } |
1897 | ||
cf901d3b | 1898 | /* See symtab.h. */ |
66a17cb6 | 1899 | |
de63c46b PA |
1900 | struct block_symbol |
1901 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1902 | domain_enum domain) | |
1903 | { | |
1904 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1905 | block, domain, language_asm, NULL); | |
1906 | } | |
1907 | ||
1908 | /* See symtab.h. */ | |
1909 | ||
d12307c1 | 1910 | struct block_symbol |
66a17cb6 TT |
1911 | lookup_language_this (const struct language_defn *lang, |
1912 | const struct block *block) | |
1913 | { | |
1914 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1915 | return {}; |
66a17cb6 | 1916 | |
cc485e62 DE |
1917 | if (symbol_lookup_debug > 1) |
1918 | { | |
1919 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1920 | ||
1921 | fprintf_unfiltered (gdb_stdlog, | |
1922 | "lookup_language_this (%s, %s (objfile %s))", | |
1923 | lang->la_name, host_address_to_string (block), | |
1924 | objfile_debug_name (objfile)); | |
1925 | } | |
1926 | ||
03de6823 | 1927 | while (block) |
66a17cb6 TT |
1928 | { |
1929 | struct symbol *sym; | |
1930 | ||
de63c46b PA |
1931 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1932 | symbol_name_match_type::SEARCH_NAME, | |
1933 | VAR_DOMAIN); | |
66a17cb6 | 1934 | if (sym != NULL) |
f149aabd | 1935 | { |
cc485e62 DE |
1936 | if (symbol_lookup_debug > 1) |
1937 | { | |
1938 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1939 | SYMBOL_PRINT_NAME (sym), | |
1940 | host_address_to_string (sym), | |
1941 | host_address_to_string (block)); | |
1942 | } | |
d12307c1 | 1943 | return (struct block_symbol) {sym, block}; |
f149aabd | 1944 | } |
66a17cb6 | 1945 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1946 | break; |
66a17cb6 TT |
1947 | block = BLOCK_SUPERBLOCK (block); |
1948 | } | |
03de6823 | 1949 | |
cc485e62 DE |
1950 | if (symbol_lookup_debug > 1) |
1951 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1952 | return {}; |
66a17cb6 TT |
1953 | } |
1954 | ||
2dc3df72 TT |
1955 | /* Given TYPE, a structure/union, |
1956 | return 1 if the component named NAME from the ultimate target | |
1957 | structure/union is defined, otherwise, return 0. */ | |
1958 | ||
1959 | static int | |
1993b719 TT |
1960 | check_field (struct type *type, const char *name, |
1961 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1962 | { |
1963 | int i; | |
1964 | ||
1965 | /* The type may be a stub. */ | |
f168693b | 1966 | type = check_typedef (type); |
2dc3df72 TT |
1967 | |
1968 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1969 | { | |
1970 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1971 | ||
1972 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1973 | { |
1974 | is_a_field_of_this->type = type; | |
1975 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1976 | return 1; | |
1977 | } | |
2dc3df72 TT |
1978 | } |
1979 | ||
1980 | /* C++: If it was not found as a data field, then try to return it | |
1981 | as a pointer to a method. */ | |
1982 | ||
1983 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1984 | { | |
1985 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1986 | { |
1987 | is_a_field_of_this->type = type; | |
1988 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1989 | return 1; | |
1990 | } | |
2dc3df72 TT |
1991 | } |
1992 | ||
1993 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1994 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1995 | return 1; |
1996 | ||
1997 | return 0; | |
1998 | } | |
1999 | ||
53c5240f | 2000 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2001 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2002 | |
d12307c1 | 2003 | static struct block_symbol |
de63c46b PA |
2004 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2005 | const struct block *block, | |
94af9270 | 2006 | const domain_enum domain, enum language language, |
1993b719 | 2007 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2008 | { |
d12307c1 | 2009 | struct block_symbol result; |
53c5240f | 2010 | const struct language_defn *langdef; |
406bc4de | 2011 | |
cc485e62 DE |
2012 | if (symbol_lookup_debug) |
2013 | { | |
2014 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2015 | ||
2016 | fprintf_unfiltered (gdb_stdlog, | |
2017 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2018 | name, host_address_to_string (block), | |
2019 | objfile != NULL | |
2020 | ? objfile_debug_name (objfile) : "NULL", | |
2021 | domain_name (domain), language_str (language)); | |
2022 | } | |
2023 | ||
9a146a11 EZ |
2024 | /* Make sure we do something sensible with is_a_field_of_this, since |
2025 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2026 | certainly use it later. If we don't set it, the contents of |
2027 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2028 | if (is_a_field_of_this != NULL) |
1993b719 | 2029 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2030 | |
e4051eeb DC |
2031 | /* Search specified block and its superiors. Don't search |
2032 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2033 | |
de63c46b | 2034 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2035 | if (result.symbol != NULL) |
cc485e62 DE |
2036 | { |
2037 | if (symbol_lookup_debug) | |
2038 | { | |
2039 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2040 | host_address_to_string (result.symbol)); |
cc485e62 | 2041 | } |
d12307c1 | 2042 | return result; |
cc485e62 | 2043 | } |
c906108c | 2044 | |
53c5240f | 2045 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2046 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2047 | |
2048 | langdef = language_def (language); | |
5f9a71c3 | 2049 | |
6592e36f TT |
2050 | /* Don't do this check if we are searching for a struct. It will |
2051 | not be found by check_field, but will be found by other | |
2052 | means. */ | |
2053 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2054 | { |
d12307c1 | 2055 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2056 | |
d12307c1 | 2057 | if (result.symbol) |
c906108c | 2058 | { |
d12307c1 | 2059 | struct type *t = result.symbol->type; |
9af17804 | 2060 | |
2b2d9e11 VP |
2061 | /* I'm not really sure that type of this can ever |
2062 | be typedefed; just be safe. */ | |
f168693b | 2063 | t = check_typedef (t); |
aa006118 | 2064 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2065 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2066 | |
2b2d9e11 VP |
2067 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2068 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2069 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2070 | langdef->la_name_of_this); |
9af17804 | 2071 | |
1993b719 | 2072 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2073 | { |
2074 | if (symbol_lookup_debug) | |
2075 | { | |
2076 | fprintf_unfiltered (gdb_stdlog, | |
2077 | "lookup_symbol_aux (...) = NULL\n"); | |
2078 | } | |
6640a367 | 2079 | return {}; |
cc485e62 | 2080 | } |
c906108c SS |
2081 | } |
2082 | } | |
2083 | ||
53c5240f | 2084 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2085 | up static and global variables. */ |
c906108c | 2086 | |
d12307c1 PMR |
2087 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2088 | if (result.symbol != NULL) | |
cc485e62 DE |
2089 | { |
2090 | if (symbol_lookup_debug) | |
2091 | { | |
2092 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2093 | host_address_to_string (result.symbol)); |
cc485e62 | 2094 | } |
d12307c1 | 2095 | return result; |
cc485e62 | 2096 | } |
c906108c | 2097 | |
774b6a14 TT |
2098 | /* Now search all static file-level symbols. Not strictly correct, |
2099 | but more useful than an error. */ | |
41f62f39 | 2100 | |
d12307c1 | 2101 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2102 | if (symbol_lookup_debug) |
2103 | { | |
2104 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2105 | result.symbol != NULL |
2106 | ? host_address_to_string (result.symbol) | |
2107 | : "NULL"); | |
cc485e62 | 2108 | } |
d12307c1 | 2109 | return result; |
41f62f39 JK |
2110 | } |
2111 | ||
e4051eeb | 2112 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2113 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2114 | |
d12307c1 | 2115 | static struct block_symbol |
de63c46b PA |
2116 | lookup_local_symbol (const char *name, |
2117 | symbol_name_match_type match_type, | |
2118 | const struct block *block, | |
74016e12 DE |
2119 | const domain_enum domain, |
2120 | enum language language) | |
8155455b DC |
2121 | { |
2122 | struct symbol *sym; | |
89a9d1b1 | 2123 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2124 | const char *scope = block_scope (block); |
2125 | ||
e4051eeb DC |
2126 | /* Check if either no block is specified or it's a global block. */ |
2127 | ||
89a9d1b1 | 2128 | if (static_block == NULL) |
6640a367 | 2129 | return {}; |
e4051eeb | 2130 | |
89a9d1b1 | 2131 | while (block != static_block) |
f61e8913 | 2132 | { |
de63c46b | 2133 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2134 | if (sym != NULL) |
d12307c1 | 2135 | return (struct block_symbol) {sym, block}; |
edb3359d | 2136 | |
f55ee35c | 2137 | if (language == language_cplus || language == language_fortran) |
13387711 | 2138 | { |
b926417a | 2139 | struct block_symbol blocksym |
d12307c1 PMR |
2140 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2141 | domain); | |
2142 | ||
b926417a TT |
2143 | if (blocksym.symbol != NULL) |
2144 | return blocksym; | |
13387711 SW |
2145 | } |
2146 | ||
edb3359d DJ |
2147 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2148 | break; | |
f61e8913 DC |
2149 | block = BLOCK_SUPERBLOCK (block); |
2150 | } | |
2151 | ||
3aee438b | 2152 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2153 | |
6640a367 | 2154 | return {}; |
f61e8913 DC |
2155 | } |
2156 | ||
cf901d3b | 2157 | /* See symtab.h. */ |
3a40aaa0 | 2158 | |
c0201579 | 2159 | struct objfile * |
3a40aaa0 UW |
2160 | lookup_objfile_from_block (const struct block *block) |
2161 | { | |
3a40aaa0 UW |
2162 | if (block == NULL) |
2163 | return NULL; | |
2164 | ||
2165 | block = block_global_block (block); | |
43f3e411 | 2166 | /* Look through all blockvectors. */ |
2030c079 | 2167 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2168 | { |
b669c953 | 2169 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2170 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2171 | GLOBAL_BLOCK)) | |
2172 | { | |
2173 | if (obj->separate_debug_objfile_backlink) | |
2174 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2175 | |
d8aeb77f TT |
2176 | return obj; |
2177 | } | |
2178 | } | |
3a40aaa0 UW |
2179 | |
2180 | return NULL; | |
2181 | } | |
2182 | ||
cf901d3b | 2183 | /* See symtab.h. */ |
f61e8913 | 2184 | |
5f9a71c3 | 2185 | struct symbol * |
de63c46b PA |
2186 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2187 | const struct block *block, | |
d1a2d36d | 2188 | const domain_enum domain) |
f61e8913 DC |
2189 | { |
2190 | struct symbol *sym; | |
f61e8913 | 2191 | |
cc485e62 DE |
2192 | if (symbol_lookup_debug > 1) |
2193 | { | |
2194 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2195 | ||
2196 | fprintf_unfiltered (gdb_stdlog, | |
2197 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2198 | name, host_address_to_string (block), | |
2199 | objfile_debug_name (objfile), | |
2200 | domain_name (domain)); | |
2201 | } | |
2202 | ||
de63c46b | 2203 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2204 | if (sym) |
8155455b | 2205 | { |
cc485e62 DE |
2206 | if (symbol_lookup_debug > 1) |
2207 | { | |
2208 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2209 | host_address_to_string (sym)); | |
2210 | } | |
21b556f4 | 2211 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2212 | } |
2213 | ||
cc485e62 DE |
2214 | if (symbol_lookup_debug > 1) |
2215 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2216 | return NULL; |
2217 | } | |
2218 | ||
cf901d3b | 2219 | /* See symtab.h. */ |
3a40aaa0 | 2220 | |
d12307c1 | 2221 | struct block_symbol |
efad9b6a | 2222 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2223 | enum block_enum block_index, |
3a40aaa0 | 2224 | const char *name, |
21b556f4 | 2225 | const domain_enum domain) |
3a40aaa0 | 2226 | { |
442853af CB |
2227 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2228 | ||
bde09ab7 | 2229 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2230 | { |
d12307c1 | 2231 | struct block_symbol result |
442853af | 2232 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2233 | |
442853af | 2234 | if (result.symbol != nullptr) |
d12307c1 | 2235 | return result; |
15d123c9 | 2236 | } |
56e3f43c | 2237 | |
6640a367 | 2238 | return {}; |
3a40aaa0 UW |
2239 | } |
2240 | ||
19630284 JB |
2241 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2242 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2243 | depending on whether or not we want to search global symbols or |
2244 | static symbols. */ | |
2245 | ||
d12307c1 | 2246 | static struct block_symbol |
c32e6a04 CB |
2247 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2248 | enum block_enum block_index, const char *name, | |
2249 | const domain_enum domain) | |
19630284 | 2250 | { |
ba715d7f JK |
2251 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2252 | ||
cc485e62 DE |
2253 | if (symbol_lookup_debug > 1) |
2254 | { | |
2255 | fprintf_unfiltered (gdb_stdlog, | |
2256 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2257 | objfile_debug_name (objfile), | |
2258 | block_index == GLOBAL_BLOCK | |
2259 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2260 | name, domain_name (domain)); | |
2261 | } | |
2262 | ||
b669c953 | 2263 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2264 | { |
43f3e411 DE |
2265 | const struct blockvector *bv; |
2266 | const struct block *block; | |
d12307c1 | 2267 | struct block_symbol result; |
43f3e411 DE |
2268 | |
2269 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2270 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2271 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2272 | result.block = block; | |
2273 | if (result.symbol != NULL) | |
a743abeb | 2274 | { |
cc485e62 DE |
2275 | if (symbol_lookup_debug > 1) |
2276 | { | |
2277 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2278 | host_address_to_string (result.symbol), |
cc485e62 DE |
2279 | host_address_to_string (block)); |
2280 | } | |
d12307c1 PMR |
2281 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2282 | return result; | |
2283 | ||
a743abeb DE |
2284 | } |
2285 | } | |
19630284 | 2286 | |
cc485e62 DE |
2287 | if (symbol_lookup_debug > 1) |
2288 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2289 | return {}; |
19630284 JB |
2290 | } |
2291 | ||
74016e12 | 2292 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2293 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2294 | and all associated separate debug objfiles. |
2295 | ||
2296 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2297 | because the outer loop will cause them to be searched too. This case is | |
2298 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2299 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2300 | |
d12307c1 | 2301 | static struct block_symbol |
422d65e7 DE |
2302 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2303 | const char *linkage_name, | |
2304 | domain_enum domain) | |
2305 | { | |
2306 | enum language lang = current_language->la_language; | |
e9ad22ee | 2307 | struct objfile *main_objfile; |
422d65e7 | 2308 | |
2f408ecb PA |
2309 | demangle_result_storage storage; |
2310 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2311 | ||
422d65e7 DE |
2312 | if (objfile->separate_debug_objfile_backlink) |
2313 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2314 | else | |
2315 | main_objfile = objfile; | |
2316 | ||
bde09ab7 | 2317 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2318 | { |
d12307c1 PMR |
2319 | struct block_symbol result; |
2320 | ||
2321 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2322 | modified_name, domain); | |
2323 | if (result.symbol == NULL) | |
2324 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2325 | modified_name, domain); | |
2326 | if (result.symbol != NULL) | |
2f408ecb | 2327 | return result; |
422d65e7 DE |
2328 | } |
2329 | ||
6640a367 | 2330 | return {}; |
422d65e7 DE |
2331 | } |
2332 | ||
08c23b0d TT |
2333 | /* A helper function that throws an exception when a symbol was found |
2334 | in a psymtab but not in a symtab. */ | |
2335 | ||
2336 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2337 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2338 | struct compunit_symtab *cust) |
08c23b0d TT |
2339 | { |
2340 | error (_("\ | |
2341 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2342 | %s may be an inlined function, or may be a template function\n \ | |
2343 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2344 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2345 | name, |
2346 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2347 | name, name); | |
08c23b0d TT |
2348 | } |
2349 | ||
74016e12 DE |
2350 | /* A helper function for various lookup routines that interfaces with |
2351 | the "quick" symbol table functions. */ | |
8155455b | 2352 | |
d12307c1 | 2353 | static struct block_symbol |
ddbcedf5 CB |
2354 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2355 | enum block_enum block_index, const char *name, | |
2356 | const domain_enum domain) | |
8155455b | 2357 | { |
43f3e411 | 2358 | struct compunit_symtab *cust; |
346d1dfe | 2359 | const struct blockvector *bv; |
8155455b | 2360 | const struct block *block; |
d12307c1 | 2361 | struct block_symbol result; |
8155455b | 2362 | |
ccefe4c4 | 2363 | if (!objfile->sf) |
6640a367 | 2364 | return {}; |
cc485e62 DE |
2365 | |
2366 | if (symbol_lookup_debug > 1) | |
2367 | { | |
2368 | fprintf_unfiltered (gdb_stdlog, | |
2369 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2370 | objfile_debug_name (objfile), | |
2371 | block_index == GLOBAL_BLOCK | |
2372 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2373 | name, domain_name (domain)); | |
2374 | } | |
2375 | ||
43f3e411 DE |
2376 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2377 | if (cust == NULL) | |
cc485e62 DE |
2378 | { |
2379 | if (symbol_lookup_debug > 1) | |
2380 | { | |
2381 | fprintf_unfiltered (gdb_stdlog, | |
2382 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2383 | } | |
6640a367 | 2384 | return {}; |
cc485e62 | 2385 | } |
8155455b | 2386 | |
43f3e411 | 2387 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2388 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2389 | result.symbol = block_lookup_symbol (block, name, |
2390 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2391 | if (result.symbol == NULL) |
43f3e411 | 2392 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2393 | |
2394 | if (symbol_lookup_debug > 1) | |
2395 | { | |
2396 | fprintf_unfiltered (gdb_stdlog, | |
2397 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2398 | host_address_to_string (result.symbol), |
cc485e62 DE |
2399 | host_address_to_string (block)); |
2400 | } | |
2401 | ||
d12307c1 PMR |
2402 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2403 | result.block = block; | |
2404 | return result; | |
8155455b DC |
2405 | } |
2406 | ||
cf901d3b | 2407 | /* See symtab.h. */ |
5f9a71c3 | 2408 | |
d12307c1 | 2409 | struct block_symbol |
f606139a DE |
2410 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2411 | const char *name, | |
5f9a71c3 | 2412 | const struct block *block, |
21b556f4 | 2413 | const domain_enum domain) |
5f9a71c3 | 2414 | { |
d12307c1 | 2415 | struct block_symbol result; |
5f9a71c3 DC |
2416 | |
2417 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2418 | this (or what turned into this) was part of lookup_symbol_aux; | |
2419 | I'm much less worried about these questions now, since these | |
2420 | decisions have turned out well, but I leave these comments here | |
2421 | for posterity. */ | |
2422 | ||
2423 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2424 | not it would be appropriate to search the current global block | |
2425 | here as well. (That's what this code used to do before the | |
2426 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2427 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2428 | next. On the other hand, if decode_line_1 is passed an argument |
2429 | like filename:var, then the user presumably wants 'var' to be | |
2430 | searched for in filename. On the third hand, there shouldn't be | |
2431 | multiple global variables all of which are named 'var', and it's | |
2432 | not like decode_line_1 has ever restricted its search to only | |
2433 | global variables in a single filename. All in all, only | |
2434 | searching the static block here seems best: it's correct and it's | |
2435 | cleanest. */ | |
2436 | ||
2437 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2438 | issue here: if you usually search for global symbols in the | |
2439 | current file, then it would be slightly better to search the | |
2440 | current global block before searching all the symtabs. But there | |
2441 | are other factors that have a much greater effect on performance | |
2442 | than that one, so I don't think we should worry about that for | |
2443 | now. */ | |
2444 | ||
d9060ba6 DE |
2445 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2446 | the current objfile. Searching the current objfile first is useful | |
2447 | for both matching user expectations as well as performance. */ | |
2448 | ||
d12307c1 PMR |
2449 | result = lookup_symbol_in_static_block (name, block, domain); |
2450 | if (result.symbol != NULL) | |
2451 | return result; | |
5f9a71c3 | 2452 | |
1994afbf DE |
2453 | /* If we didn't find a definition for a builtin type in the static block, |
2454 | search for it now. This is actually the right thing to do and can be | |
2455 | a massive performance win. E.g., when debugging a program with lots of | |
2456 | shared libraries we could search all of them only to find out the | |
2457 | builtin type isn't defined in any of them. This is common for types | |
2458 | like "void". */ | |
2459 | if (domain == VAR_DOMAIN) | |
2460 | { | |
2461 | struct gdbarch *gdbarch; | |
2462 | ||
2463 | if (block == NULL) | |
2464 | gdbarch = target_gdbarch (); | |
2465 | else | |
2466 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2467 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2468 | gdbarch, name); | |
2469 | result.block = NULL; | |
2470 | if (result.symbol != NULL) | |
2471 | return result; | |
1994afbf DE |
2472 | } |
2473 | ||
08724ab7 | 2474 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2475 | } |
2476 | ||
cf901d3b | 2477 | /* See symtab.h. */ |
5f9a71c3 | 2478 | |
d12307c1 | 2479 | struct block_symbol |
24d864bb DE |
2480 | lookup_symbol_in_static_block (const char *name, |
2481 | const struct block *block, | |
2482 | const domain_enum domain) | |
5f9a71c3 DC |
2483 | { |
2484 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2485 | struct symbol *sym; |
5f9a71c3 | 2486 | |
cc485e62 | 2487 | if (static_block == NULL) |
6640a367 | 2488 | return {}; |
cc485e62 DE |
2489 | |
2490 | if (symbol_lookup_debug) | |
2491 | { | |
2492 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2493 | ||
2494 | fprintf_unfiltered (gdb_stdlog, | |
2495 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2496 | " %s)\n", | |
2497 | name, | |
2498 | host_address_to_string (block), | |
2499 | objfile_debug_name (objfile), | |
2500 | domain_name (domain)); | |
2501 | } | |
2502 | ||
de63c46b PA |
2503 | sym = lookup_symbol_in_block (name, |
2504 | symbol_name_match_type::FULL, | |
2505 | static_block, domain); | |
cc485e62 DE |
2506 | if (symbol_lookup_debug) |
2507 | { | |
2508 | fprintf_unfiltered (gdb_stdlog, | |
2509 | "lookup_symbol_in_static_block (...) = %s\n", | |
2510 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2511 | } | |
d12307c1 | 2512 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2513 | } |
2514 | ||
af3768e9 DE |
2515 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2516 | 1) First search expanded symtabs, and if not found | |
2517 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2518 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2519 | ||
d12307c1 | 2520 | static struct block_symbol |
c32e6a04 | 2521 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2522 | const char *name, const domain_enum domain) |
2523 | { | |
d12307c1 | 2524 | struct block_symbol result; |
af3768e9 | 2525 | |
c32e6a04 CB |
2526 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2527 | ||
cc485e62 DE |
2528 | if (symbol_lookup_debug) |
2529 | { | |
2530 | fprintf_unfiltered (gdb_stdlog, | |
2531 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2532 | objfile_debug_name (objfile), | |
2533 | block_index == GLOBAL_BLOCK | |
2534 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2535 | name, domain_name (domain)); | |
2536 | } | |
2537 | ||
af3768e9 DE |
2538 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2539 | name, domain); | |
d12307c1 | 2540 | if (result.symbol != NULL) |
af3768e9 | 2541 | { |
cc485e62 DE |
2542 | if (symbol_lookup_debug) |
2543 | { | |
2544 | fprintf_unfiltered (gdb_stdlog, | |
2545 | "lookup_symbol_in_objfile (...) = %s" | |
2546 | " (in symtabs)\n", | |
d12307c1 | 2547 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2548 | } |
2549 | return result; | |
af3768e9 DE |
2550 | } |
2551 | ||
cc485e62 DE |
2552 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2553 | name, domain); | |
2554 | if (symbol_lookup_debug) | |
2555 | { | |
2556 | fprintf_unfiltered (gdb_stdlog, | |
2557 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2558 | result.symbol != NULL |
2559 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2560 | : "NULL", |
d12307c1 | 2561 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2562 | } |
af3768e9 DE |
2563 | return result; |
2564 | } | |
2565 | ||
19630284 JB |
2566 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2567 | ||
9aa55206 | 2568 | struct global_or_static_sym_lookup_data |
19630284 JB |
2569 | { |
2570 | /* The name of the symbol we are searching for. */ | |
2571 | const char *name; | |
2572 | ||
2573 | /* The domain to use for our search. */ | |
2574 | domain_enum domain; | |
2575 | ||
9aa55206 CB |
2576 | /* The block index in which to search. */ |
2577 | enum block_enum block_index; | |
2578 | ||
19630284 | 2579 | /* The field where the callback should store the symbol if found. |
d12307c1 PMR |
2580 | It should be initialized to {NULL, NULL} before the search is started. */ |
2581 | struct block_symbol result; | |
19630284 JB |
2582 | }; |
2583 | ||
2584 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
9aa55206 CB |
2585 | It searches by name for a symbol in the block given by BLOCK_INDEX of the |
2586 | given OBJFILE. The arguments for the search are passed via CB_DATA, which | |
2587 | in reality is a pointer to struct global_or_static_sym_lookup_data. */ | |
19630284 JB |
2588 | |
2589 | static int | |
9aa55206 CB |
2590 | lookup_symbol_global_or_static_iterator_cb (struct objfile *objfile, |
2591 | void *cb_data) | |
19630284 | 2592 | { |
9aa55206 CB |
2593 | struct global_or_static_sym_lookup_data *data = |
2594 | (struct global_or_static_sym_lookup_data *) cb_data; | |
19630284 | 2595 | |
d12307c1 PMR |
2596 | gdb_assert (data->result.symbol == NULL |
2597 | && data->result.block == NULL); | |
19630284 | 2598 | |
9aa55206 | 2599 | data->result = lookup_symbol_in_objfile (objfile, data->block_index, |
af3768e9 | 2600 | data->name, data->domain); |
19630284 JB |
2601 | |
2602 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2603 | keep going. */ | |
d12307c1 | 2604 | return (data->result.symbol != NULL); |
19630284 JB |
2605 | } |
2606 | ||
9aa55206 CB |
2607 | /* This function contains the common code of lookup_{global,static}_symbol. |
2608 | OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is | |
2609 | the objfile to start the lookup in. */ | |
5f9a71c3 | 2610 | |
9aa55206 CB |
2611 | static struct block_symbol |
2612 | lookup_global_or_static_symbol (const char *name, | |
2613 | enum block_enum block_index, | |
2614 | struct objfile *objfile, | |
2615 | const domain_enum domain) | |
5f9a71c3 | 2616 | { |
f57d2163 | 2617 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2618 | struct block_symbol result; |
9aa55206 | 2619 | struct global_or_static_sym_lookup_data lookup_data; |
f57d2163 DE |
2620 | struct block_symbol_cache *bsc; |
2621 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2622 | |
9aa55206 CB |
2623 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2624 | gdb_assert (objfile == nullptr || block_index == GLOBAL_BLOCK); | |
f57d2163 DE |
2625 | |
2626 | /* First see if we can find the symbol in the cache. | |
2627 | This works because we use the current objfile to qualify the lookup. */ | |
9aa55206 | 2628 | result = symbol_cache_lookup (cache, objfile, block_index, name, domain, |
d12307c1 PMR |
2629 | &bsc, &slot); |
2630 | if (result.symbol != NULL) | |
f57d2163 | 2631 | { |
d12307c1 | 2632 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2633 | return {}; |
d12307c1 | 2634 | return result; |
f57d2163 DE |
2635 | } |
2636 | ||
626ca2c0 | 2637 | /* Do a global search (of global blocks, heh). */ |
d12307c1 | 2638 | if (result.symbol == NULL) |
f57d2163 DE |
2639 | { |
2640 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2641 | lookup_data.name = name; | |
9aa55206 | 2642 | lookup_data.block_index = block_index; |
f57d2163 DE |
2643 | lookup_data.domain = domain; |
2644 | gdbarch_iterate_over_objfiles_in_search_order | |
2645 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
9aa55206 | 2646 | lookup_symbol_global_or_static_iterator_cb, &lookup_data, objfile); |
d12307c1 | 2647 | result = lookup_data.result; |
f57d2163 | 2648 | } |
6a3ca067 | 2649 | |
d12307c1 PMR |
2650 | if (result.symbol != NULL) |
2651 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2652 | else |
2653 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2654 | ||
d12307c1 | 2655 | return result; |
5f9a71c3 DC |
2656 | } |
2657 | ||
9aa55206 CB |
2658 | /* See symtab.h. */ |
2659 | ||
2660 | struct block_symbol | |
2661 | lookup_static_symbol (const char *name, const domain_enum domain) | |
2662 | { | |
2663 | return lookup_global_or_static_symbol (name, STATIC_BLOCK, nullptr, domain); | |
2664 | } | |
2665 | ||
2666 | /* See symtab.h. */ | |
2667 | ||
2668 | struct block_symbol | |
2669 | lookup_global_symbol (const char *name, | |
2670 | const struct block *block, | |
2671 | const domain_enum domain) | |
2672 | { | |
2673 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2674 | return lookup_global_or_static_symbol (name, GLOBAL_BLOCK, objfile, domain); | |
2675 | } | |
2676 | ||
4186eb54 KS |
2677 | int |
2678 | symbol_matches_domain (enum language symbol_language, | |
2679 | domain_enum symbol_domain, | |
2680 | domain_enum domain) | |
2681 | { | |
2682 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2683 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2684 | if (symbol_language == language_cplus | |
2685 | || symbol_language == language_d | |
65547233 TT |
2686 | || symbol_language == language_ada |
2687 | || symbol_language == language_rust) | |
4186eb54 KS |
2688 | { |
2689 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2690 | && symbol_domain == STRUCT_DOMAIN) | |
2691 | return 1; | |
2692 | } | |
2693 | /* For all other languages, strict match is required. */ | |
2694 | return (symbol_domain == domain); | |
2695 | } | |
2696 | ||
cf901d3b | 2697 | /* See symtab.h. */ |
c906108c | 2698 | |
ccefe4c4 TT |
2699 | struct type * |
2700 | lookup_transparent_type (const char *name) | |
c906108c | 2701 | { |
ccefe4c4 TT |
2702 | return current_language->la_lookup_transparent_type (name); |
2703 | } | |
9af17804 | 2704 | |
ccefe4c4 TT |
2705 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2706 | "quick" symbol table functions. */ | |
357e46e7 | 2707 | |
ccefe4c4 | 2708 | static struct type * |
ddbcedf5 CB |
2709 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2710 | enum block_enum block_index, | |
ccefe4c4 TT |
2711 | const char *name) |
2712 | { | |
43f3e411 | 2713 | struct compunit_symtab *cust; |
346d1dfe | 2714 | const struct blockvector *bv; |
582942f4 | 2715 | const struct block *block; |
ccefe4c4 | 2716 | struct symbol *sym; |
c906108c | 2717 | |
ccefe4c4 TT |
2718 | if (!objfile->sf) |
2719 | return NULL; | |
43f3e411 DE |
2720 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2721 | STRUCT_DOMAIN); | |
2722 | if (cust == NULL) | |
ccefe4c4 | 2723 | return NULL; |
c906108c | 2724 | |
43f3e411 | 2725 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2726 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2727 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2728 | block_find_non_opaque_type, NULL); | |
2729 | if (sym == NULL) | |
43f3e411 | 2730 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2731 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2732 | return SYMBOL_TYPE (sym); | |
2733 | } | |
08c23b0d | 2734 | |
b2e2f908 DE |
2735 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2736 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2737 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2738 | ||
2739 | static struct type * | |
ddbcedf5 CB |
2740 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2741 | enum block_enum block_index, | |
b2e2f908 DE |
2742 | const char *name) |
2743 | { | |
b2e2f908 DE |
2744 | const struct blockvector *bv; |
2745 | const struct block *block; | |
2746 | const struct symbol *sym; | |
2747 | ||
b669c953 | 2748 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2749 | { |
2750 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2751 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2752 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2753 | block_find_non_opaque_type, NULL); | |
2754 | if (sym != NULL) | |
2755 | { | |
2756 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2757 | return SYMBOL_TYPE (sym); | |
2758 | } | |
2759 | } | |
c906108c | 2760 | |
ccefe4c4 | 2761 | return NULL; |
b368761e | 2762 | } |
c906108c | 2763 | |
b368761e DC |
2764 | /* The standard implementation of lookup_transparent_type. This code |
2765 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2766 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2767 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2768 | global blocks. */ |
c906108c SS |
2769 | |
2770 | struct type * | |
b368761e | 2771 | basic_lookup_transparent_type (const char *name) |
c906108c | 2772 | { |
ccefe4c4 | 2773 | struct type *t; |
c906108c SS |
2774 | |
2775 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2776 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2777 | of the desired name as a global, then do psymtab-to-symtab |
2778 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2779 | |
2030c079 | 2780 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2781 | { |
2782 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2783 | if (t) | |
2784 | return t; | |
2785 | } | |
c906108c | 2786 | |
2030c079 | 2787 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2788 | { |
2789 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2790 | if (t) | |
2791 | return t; | |
2792 | } | |
c906108c SS |
2793 | |
2794 | /* Now search the static file-level symbols. | |
2795 | Not strictly correct, but more useful than an error. | |
2796 | Do the symtab's first, then | |
c378eb4e | 2797 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2798 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2799 | conversion on the fly and return the found symbol. */ |
c906108c | 2800 | |
2030c079 | 2801 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2802 | { |
2803 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2804 | if (t) | |
2805 | return t; | |
2806 | } | |
c906108c | 2807 | |
2030c079 | 2808 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2809 | { |
2810 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2811 | if (t) | |
2812 | return t; | |
2813 | } | |
ccefe4c4 | 2814 | |
c906108c SS |
2815 | return (struct type *) 0; |
2816 | } | |
2817 | ||
6969f124 | 2818 | /* See symtab.h. */ |
f8eba3c6 | 2819 | |
6969f124 | 2820 | bool |
b5ec771e PA |
2821 | iterate_over_symbols (const struct block *block, |
2822 | const lookup_name_info &name, | |
f8eba3c6 | 2823 | const domain_enum domain, |
14bc53a8 | 2824 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2825 | { |
4eeaa230 DE |
2826 | struct block_iterator iter; |
2827 | struct symbol *sym; | |
f8eba3c6 | 2828 | |
358d6ab3 | 2829 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2830 | { |
4186eb54 KS |
2831 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2832 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2833 | { |
7e41c8db KS |
2834 | struct block_symbol block_sym = {sym, block}; |
2835 | ||
2836 | if (!callback (&block_sym)) | |
6969f124 | 2837 | return false; |
f8eba3c6 | 2838 | } |
f8eba3c6 | 2839 | } |
6969f124 | 2840 | return true; |
f8eba3c6 TT |
2841 | } |
2842 | ||
6a3dbf1b TT |
2843 | /* See symtab.h. */ |
2844 | ||
2845 | bool | |
2846 | iterate_over_symbols_terminated | |
2847 | (const struct block *block, | |
2848 | const lookup_name_info &name, | |
2849 | const domain_enum domain, | |
2850 | gdb::function_view<symbol_found_callback_ftype> callback) | |
2851 | { | |
2852 | if (!iterate_over_symbols (block, name, domain, callback)) | |
2853 | return false; | |
2854 | struct block_symbol block_sym = {nullptr, block}; | |
2855 | return callback (&block_sym); | |
2856 | } | |
2857 | ||
43f3e411 DE |
2858 | /* Find the compunit symtab associated with PC and SECTION. |
2859 | This will read in debug info as necessary. */ | |
c906108c | 2860 | |
43f3e411 DE |
2861 | struct compunit_symtab * |
2862 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2863 | { |
43f3e411 | 2864 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2865 | CORE_ADDR distance = 0; |
77e371c0 | 2866 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2867 | |
2868 | /* If we know that this is not a text address, return failure. This is | |
2869 | necessary because we loop based on the block's high and low code | |
2870 | addresses, which do not include the data ranges, and because | |
2871 | we call find_pc_sect_psymtab which has a similar restriction based | |
2872 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2873 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2874 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2875 | return NULL; |
c906108c SS |
2876 | |
2877 | /* Search all symtabs for the one whose file contains our address, and which | |
2878 | is the smallest of all the ones containing the address. This is designed | |
2879 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2880 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2881 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2882 | ||
2883 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2884 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2885 | been read in already via the dependency mechanism. |
2886 | It might be swifter to create several symtabs with the same name | |
2887 | like xcoff does (I'm not sure). | |
2888 | ||
2889 | It also happens for objfiles that have their functions reordered. | |
2890 | For these, the symtab we are looking for is not necessarily read in. */ | |
2891 | ||
2030c079 | 2892 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2893 | { |
b669c953 | 2894 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2895 | { |
582942f4 | 2896 | const struct block *b; |
d8aeb77f | 2897 | const struct blockvector *bv; |
43f3e411 | 2898 | |
d8aeb77f TT |
2899 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2900 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2901 | |
d8aeb77f TT |
2902 | if (BLOCK_START (b) <= pc |
2903 | && BLOCK_END (b) > pc | |
2904 | && (distance == 0 | |
2905 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2906 | { | |
2907 | /* For an objfile that has its functions reordered, | |
2908 | find_pc_psymtab will find the proper partial symbol table | |
2909 | and we simply return its corresponding symtab. */ | |
2910 | /* In order to better support objfiles that contain both | |
2911 | stabs and coff debugging info, we continue on if a psymtab | |
2912 | can't be found. */ | |
2913 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2914 | { | |
2915 | struct compunit_symtab *result; | |
2916 | ||
2917 | result | |
2918 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2919 | msymbol, | |
2920 | pc, | |
2921 | section, | |
2922 | 0); | |
2923 | if (result != NULL) | |
2924 | return result; | |
2925 | } | |
2926 | if (section != 0) | |
2927 | { | |
2928 | struct block_iterator iter; | |
2929 | struct symbol *sym = NULL; | |
c906108c | 2930 | |
d8aeb77f TT |
2931 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2932 | { | |
2933 | fixup_symbol_section (sym, obj_file); | |
2934 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2935 | sym), | |
2936 | section)) | |
2937 | break; | |
2938 | } | |
2939 | if (sym == NULL) | |
2940 | continue; /* No symbol in this symtab matches | |
2941 | section. */ | |
2942 | } | |
2943 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2944 | best_cust = cust; | |
2945 | } | |
2946 | } | |
2947 | } | |
c906108c | 2948 | |
43f3e411 DE |
2949 | if (best_cust != NULL) |
2950 | return best_cust; | |
c906108c | 2951 | |
072cabfe DE |
2952 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2953 | ||
2030c079 | 2954 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2955 | { |
2956 | struct compunit_symtab *result; | |
2957 | ||
2958 | if (!objf->sf) | |
2959 | continue; | |
2960 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2961 | msymbol, | |
2962 | pc, section, | |
2963 | 1); | |
2964 | if (result != NULL) | |
2965 | return result; | |
2966 | } | |
ccefe4c4 TT |
2967 | |
2968 | return NULL; | |
c906108c SS |
2969 | } |
2970 | ||
43f3e411 DE |
2971 | /* Find the compunit symtab associated with PC. |
2972 | This will read in debug info as necessary. | |
2973 | Backward compatibility, no section. */ | |
c906108c | 2974 | |
43f3e411 DE |
2975 | struct compunit_symtab * |
2976 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2977 | { |
43f3e411 | 2978 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2979 | } |
71a3c369 TT |
2980 | |
2981 | /* See symtab.h. */ | |
2982 | ||
2983 | struct symbol * | |
2984 | find_symbol_at_address (CORE_ADDR address) | |
2985 | { | |
2030c079 | 2986 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2987 | { |
2988 | if (objfile->sf == NULL | |
2989 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
2990 | continue; | |
71a3c369 | 2991 | |
aed57c53 TT |
2992 | struct compunit_symtab *symtab |
2993 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
2994 | if (symtab != NULL) | |
2995 | { | |
2996 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 2997 | |
aed57c53 | 2998 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 2999 | { |
582942f4 | 3000 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
3001 | struct block_iterator iter; |
3002 | struct symbol *sym; | |
3003 | ||
3004 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3005 | { | |
3006 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3007 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3008 | return sym; | |
3009 | } | |
71a3c369 | 3010 | } |
aed57c53 TT |
3011 | } |
3012 | } | |
71a3c369 TT |
3013 | |
3014 | return NULL; | |
3015 | } | |
3016 | ||
c906108c | 3017 | \f |
c5aa993b | 3018 | |
7e73cedf | 3019 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3020 | Return a structure containing a symtab pointer, a line number, |
3021 | and a pc range for the entire source line. | |
3022 | The value's .pc field is NOT the specified pc. | |
3023 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3024 | use the line that ends there. Otherwise, in that case, the line | |
3025 | that begins there is used. */ | |
3026 | ||
3027 | /* The big complication here is that a line may start in one file, and end just | |
3028 | before the start of another file. This usually occurs when you #include | |
3029 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3030 | range, we must search all symtabs associated with this compilation unit, and | |
3031 | find the one whose first PC is closer than that of the next line in this | |
3032 | symtab. */ | |
3033 | ||
c906108c | 3034 | struct symtab_and_line |
714835d5 | 3035 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3036 | { |
43f3e411 | 3037 | struct compunit_symtab *cust; |
52f0bd74 AC |
3038 | struct linetable *l; |
3039 | int len; | |
52f0bd74 | 3040 | struct linetable_entry *item; |
346d1dfe | 3041 | const struct blockvector *bv; |
7cbd4a93 | 3042 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3043 | |
3044 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3045 | ||
3046 | struct linetable_entry *best = NULL; | |
3047 | CORE_ADDR best_end = 0; | |
3048 | struct symtab *best_symtab = 0; | |
3049 | ||
3050 | /* Store here the first line number | |
3051 | of a file which contains the line at the smallest pc after PC. | |
3052 | If we don't find a line whose range contains PC, | |
3053 | we will use a line one less than this, | |
3054 | with a range from the start of that file to the first line's pc. */ | |
3055 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3056 | |
3057 | /* Info on best line seen in this file. */ | |
3058 | ||
3059 | struct linetable_entry *prev; | |
3060 | ||
3061 | /* If this pc is not from the current frame, | |
3062 | it is the address of the end of a call instruction. | |
3063 | Quite likely that is the start of the following statement. | |
3064 | But what we want is the statement containing the instruction. | |
3065 | Fudge the pc to make sure we get that. */ | |
3066 | ||
b77b1eb7 JB |
3067 | /* It's tempting to assume that, if we can't find debugging info for |
3068 | any function enclosing PC, that we shouldn't search for line | |
3069 | number info, either. However, GAS can emit line number info for | |
3070 | assembly files --- very helpful when debugging hand-written | |
3071 | assembly code. In such a case, we'd have no debug info for the | |
3072 | function, but we would have line info. */ | |
648f4f79 | 3073 | |
c906108c SS |
3074 | if (notcurrent) |
3075 | pc -= 1; | |
3076 | ||
c5aa993b | 3077 | /* elz: added this because this function returned the wrong |
c906108c | 3078 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3079 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3080 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3081 | taken to be the one of the line before the pc. */ |
3082 | ||
c906108c | 3083 | /* RT: Further explanation: |
c5aa993b | 3084 | |
c906108c SS |
3085 | * We have stubs (trampolines) inserted between procedures. |
3086 | * | |
3087 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3088 | * exists in the main image. | |
3089 | * | |
3090 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3091 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3092 | * the others appear as text. E.g.: |
3093 | * | |
9af17804 | 3094 | * Minimal symbol table for main image |
c906108c SS |
3095 | * main: code for main (text symbol) |
3096 | * shr1: stub (trampoline symbol) | |
3097 | * foo: code for foo (text symbol) | |
3098 | * ... | |
3099 | * Minimal symbol table for "shr1" image: | |
3100 | * ... | |
3101 | * shr1: code for shr1 (text symbol) | |
3102 | * ... | |
3103 | * | |
3104 | * So the code below is trying to detect if we are in the stub | |
3105 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3106 | * and if found, do the symbolization from the real-code address | |
3107 | * rather than the stub address. | |
3108 | * | |
3109 | * Assumptions being made about the minimal symbol table: | |
3110 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3111 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3112 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3113 | * symbol (the "foo" text symbol for example) and will not |
3114 | * return the trampoline. | |
3115 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3116 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3117 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3118 | * check for the address being the same, to avoid an |
3119 | * infinite recursion. | |
3120 | */ | |
c5aa993b | 3121 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3122 | if (msymbol.minsym != NULL) |
3123 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3124 | { |
77e371c0 | 3125 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3126 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3127 | NULL); |
3128 | ||
3129 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3130 | /* I eliminated this warning since it is coming out |
3131 | * in the following situation: | |
3132 | * gdb shmain // test program with shared libraries | |
3133 | * (gdb) break shr1 // function in shared lib | |
3134 | * Warning: In stub for ... | |
9af17804 | 3135 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3136 | * so of course we can't find the real func/line info, |
3137 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3138 | * So I commented out the warning. RT */ |
3e43a32a | 3139 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3140 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3141 | ; | |
c5aa993b | 3142 | /* fall through */ |
77e371c0 TT |
3143 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3144 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3145 | /* Avoid infinite recursion */ |
c378eb4e | 3146 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3147 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3148 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3149 | ; | |
c5aa993b JM |
3150 | /* fall through */ |
3151 | else | |
77e371c0 | 3152 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3153 | } |
c906108c | 3154 | |
51abb421 PA |
3155 | symtab_and_line val; |
3156 | val.pspace = current_program_space; | |
c906108c | 3157 | |
43f3e411 DE |
3158 | cust = find_pc_sect_compunit_symtab (pc, section); |
3159 | if (cust == NULL) | |
c906108c | 3160 | { |
c378eb4e | 3161 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3162 | if (notcurrent) |
3163 | pc++; | |
3164 | val.pc = pc; | |
3165 | return val; | |
3166 | } | |
3167 | ||
43f3e411 | 3168 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3169 | |
3170 | /* Look at all the symtabs that share this blockvector. | |
3171 | They all have the same apriori range, that we found was right; | |
3172 | but they have different line tables. */ | |
3173 | ||
5accd1a0 | 3174 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3175 | { |
3176 | /* Find the best line in this symtab. */ | |
43f3e411 | 3177 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3178 | if (!l) |
c5aa993b | 3179 | continue; |
c906108c SS |
3180 | len = l->nitems; |
3181 | if (len <= 0) | |
3182 | { | |
3183 | /* I think len can be zero if the symtab lacks line numbers | |
3184 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3185 | I'm not sure which, and maybe it depends on the symbol | |
3186 | reader). */ | |
3187 | continue; | |
3188 | } | |
3189 | ||
3190 | prev = NULL; | |
c378eb4e | 3191 | item = l->item; /* Get first line info. */ |
c906108c SS |
3192 | |
3193 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3194 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3195 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3196 | alt = item; |
c906108c | 3197 | |
b926417a | 3198 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3199 | const struct linetable_entry & lhs)->bool |
3200 | { | |
b926417a | 3201 | return comp_pc < lhs.pc; |
7cbe16e9 | 3202 | }; |
c906108c | 3203 | |
7cbe16e9 SR |
3204 | struct linetable_entry *first = item; |
3205 | struct linetable_entry *last = item + len; | |
3206 | item = std::upper_bound (first, last, pc, pc_compare); | |
3207 | if (item != first) | |
3208 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3209 | |
3210 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3211 | item points at the next line. If we ran off the end of the linetable |
3212 | (pc >= start of the last line), then prev == item. If pc < start of | |
3213 | the first line, prev will not be set. */ | |
c906108c SS |
3214 | |
3215 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3216 | If so, record this file, and its best line, as best so far. Don't |
3217 | save prev if it represents the end of a function (i.e. line number | |
3218 | 0) instead of a real line. */ | |
c906108c | 3219 | |
083ae935 | 3220 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3221 | { |
3222 | best = prev; | |
43f3e411 | 3223 | best_symtab = iter_s; |
25d53da1 KB |
3224 | |
3225 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3226 | if (best_end <= best->pc) | |
3227 | best_end = 0; | |
c906108c | 3228 | } |
25d53da1 KB |
3229 | |
3230 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3231 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3232 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3233 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3234 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3235 | best_end = item->pc; |
c906108c SS |
3236 | } |
3237 | ||
3238 | if (!best_symtab) | |
3239 | { | |
e86e87f7 DJ |
3240 | /* If we didn't find any line number info, just return zeros. |
3241 | We used to return alt->line - 1 here, but that could be | |
3242 | anywhere; if we don't have line number info for this PC, | |
3243 | don't make some up. */ | |
3244 | val.pc = pc; | |
c906108c | 3245 | } |
e8717518 FF |
3246 | else if (best->line == 0) |
3247 | { | |
3248 | /* If our best fit is in a range of PC's for which no line | |
3249 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3250 | find any valid line information. */ |
e8717518 FF |
3251 | val.pc = pc; |
3252 | } | |
c906108c SS |
3253 | else |
3254 | { | |
3255 | val.symtab = best_symtab; | |
3256 | val.line = best->line; | |
3257 | val.pc = best->pc; | |
3258 | if (best_end && (!alt || best_end < alt->pc)) | |
3259 | val.end = best_end; | |
3260 | else if (alt) | |
3261 | val.end = alt->pc; | |
3262 | else | |
3263 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3264 | } | |
3265 | val.section = section; | |
3266 | return val; | |
3267 | } | |
3268 | ||
c378eb4e | 3269 | /* Backward compatibility (no section). */ |
c906108c SS |
3270 | |
3271 | struct symtab_and_line | |
fba45db2 | 3272 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3273 | { |
714835d5 | 3274 | struct obj_section *section; |
c906108c SS |
3275 | |
3276 | section = find_pc_overlay (pc); | |
3277 | if (pc_in_unmapped_range (pc, section)) | |
3278 | pc = overlay_mapped_address (pc, section); | |
3279 | return find_pc_sect_line (pc, section, notcurrent); | |
3280 | } | |
34248c3a DE |
3281 | |
3282 | /* See symtab.h. */ | |
3283 | ||
3284 | struct symtab * | |
3285 | find_pc_line_symtab (CORE_ADDR pc) | |
3286 | { | |
3287 | struct symtab_and_line sal; | |
3288 | ||
3289 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3290 | There are currently no callers that ever pass non-zero. */ | |
3291 | sal = find_pc_line (pc, 0); | |
3292 | return sal.symtab; | |
3293 | } | |
c906108c | 3294 | \f |
c906108c SS |
3295 | /* Find line number LINE in any symtab whose name is the same as |
3296 | SYMTAB. | |
3297 | ||
3298 | If found, return the symtab that contains the linetable in which it was | |
3299 | found, set *INDEX to the index in the linetable of the best entry | |
3300 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3301 | exact match. | |
3302 | ||
3303 | If not found, return NULL. */ | |
3304 | ||
50641945 | 3305 | struct symtab * |
5accd1a0 | 3306 | find_line_symtab (struct symtab *sym_tab, int line, |
433759f7 | 3307 | int *index, int *exact_match) |
c906108c | 3308 | { |
6f43c46f | 3309 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3310 | |
3311 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3312 | so far seen. */ | |
3313 | ||
3314 | int best_index; | |
3315 | struct linetable *best_linetable; | |
3316 | struct symtab *best_symtab; | |
3317 | ||
3318 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3319 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3320 | best_symtab = sym_tab; | |
f8eba3c6 | 3321 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3322 | if (best_index < 0 || !exact) |
3323 | { | |
3324 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3325 | another symtab with the same name. In the case of xcoff, |
3326 | multiple csects for one source file (produced by IBM's FORTRAN | |
3327 | compiler) produce multiple symtabs (this is unavoidable | |
3328 | assuming csects can be at arbitrary places in memory and that | |
3329 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3330 | |
3331 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3332 | or 0 if none has been seen so far. |
3333 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3334 | int best; |
3335 | ||
c906108c SS |
3336 | if (best_index >= 0) |
3337 | best = best_linetable->item[best_index].line; | |
3338 | else | |
3339 | best = 0; | |
3340 | ||
2030c079 | 3341 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3342 | { |
3343 | if (objfile->sf) | |
3344 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3345 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3346 | } |
51432cca | 3347 | |
2030c079 | 3348 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3349 | { |
b669c953 | 3350 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3351 | { |
3352 | for (symtab *s : compunit_filetabs (cu)) | |
3353 | { | |
3354 | struct linetable *l; | |
3355 | int ind; | |
3356 | ||
3357 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3358 | continue; | |
3359 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3360 | symtab_to_fullname (s)) != 0) | |
3361 | continue; | |
3362 | l = SYMTAB_LINETABLE (s); | |
3363 | ind = find_line_common (l, line, &exact, 0); | |
3364 | if (ind >= 0) | |
3365 | { | |
3366 | if (exact) | |
3367 | { | |
3368 | best_index = ind; | |
3369 | best_linetable = l; | |
3370 | best_symtab = s; | |
3371 | goto done; | |
3372 | } | |
3373 | if (best == 0 || l->item[ind].line < best) | |
3374 | { | |
3375 | best = l->item[ind].line; | |
3376 | best_index = ind; | |
3377 | best_linetable = l; | |
3378 | best_symtab = s; | |
3379 | } | |
3380 | } | |
3381 | } | |
3382 | } | |
3383 | } | |
c906108c | 3384 | } |
c5aa993b | 3385 | done: |
c906108c SS |
3386 | if (best_index < 0) |
3387 | return NULL; | |
3388 | ||
3389 | if (index) | |
3390 | *index = best_index; | |
3391 | if (exact_match) | |
3392 | *exact_match = exact; | |
3393 | ||
3394 | return best_symtab; | |
3395 | } | |
f8eba3c6 TT |
3396 | |
3397 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3398 | exactly match LINE. Returns an empty vector if there are no exact |
3399 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3400 | |
67d89901 | 3401 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3402 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3403 | struct linetable_entry **best_item) | |
3404 | { | |
c656bca5 | 3405 | int start = 0; |
67d89901 | 3406 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3407 | |
3408 | /* First, collect all the PCs that are at this line. */ | |
3409 | while (1) | |
3410 | { | |
3411 | int was_exact; | |
3412 | int idx; | |
3413 | ||
8435453b DE |
3414 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3415 | start); | |
f8eba3c6 TT |
3416 | if (idx < 0) |
3417 | break; | |
3418 | ||
3419 | if (!was_exact) | |
3420 | { | |
8435453b | 3421 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3422 | |
3423 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3424 | *best_item = item; | |
3425 | ||
3426 | break; | |
3427 | } | |
3428 | ||
67d89901 | 3429 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3430 | start = idx + 1; |
3431 | } | |
3432 | ||
3433 | return result; | |
3434 | } | |
3435 | ||
c906108c SS |
3436 | \f |
3437 | /* Set the PC value for a given source file and line number and return true. | |
3438 | Returns zero for invalid line number (and sets the PC to 0). | |
3439 | The source file is specified with a struct symtab. */ | |
3440 | ||
3441 | int | |
fba45db2 | 3442 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3443 | { |
3444 | struct linetable *l; | |
3445 | int ind; | |
3446 | ||
3447 | *pc = 0; | |
3448 | if (symtab == 0) | |
3449 | return 0; | |
3450 | ||
3451 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3452 | if (symtab != NULL) | |
3453 | { | |
8435453b | 3454 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3455 | *pc = l->item[ind].pc; |
3456 | return 1; | |
3457 | } | |
3458 | else | |
3459 | return 0; | |
3460 | } | |
3461 | ||
3462 | /* Find the range of pc values in a line. | |
3463 | Store the starting pc of the line into *STARTPTR | |
3464 | and the ending pc (start of next line) into *ENDPTR. | |
3465 | Returns 1 to indicate success. | |
3466 | Returns 0 if could not find the specified line. */ | |
3467 | ||
3468 | int | |
fba45db2 KB |
3469 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3470 | CORE_ADDR *endptr) | |
c906108c SS |
3471 | { |
3472 | CORE_ADDR startaddr; | |
3473 | struct symtab_and_line found_sal; | |
3474 | ||
3475 | startaddr = sal.pc; | |
c5aa993b | 3476 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3477 | return 0; |
3478 | ||
3479 | /* This whole function is based on address. For example, if line 10 has | |
3480 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3481 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3482 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3483 | This also insures that we never give a range like "starts at 0x134 | |
3484 | and ends at 0x12c". */ | |
3485 | ||
3486 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3487 | if (found_sal.line != sal.line) | |
3488 | { | |
3489 | /* The specified line (sal) has zero bytes. */ | |
3490 | *startptr = found_sal.pc; | |
3491 | *endptr = found_sal.pc; | |
3492 | } | |
3493 | else | |
3494 | { | |
3495 | *startptr = found_sal.pc; | |
3496 | *endptr = found_sal.end; | |
3497 | } | |
3498 | return 1; | |
3499 | } | |
3500 | ||
3501 | /* Given a line table and a line number, return the index into the line | |
3502 | table for the pc of the nearest line whose number is >= the specified one. | |
3503 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3504 | START is the index at which to start searching the line table. |
c906108c SS |
3505 | |
3506 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3507 | ||
3508 | static int | |
aa1ee363 | 3509 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3510 | int *exact_match, int start) |
c906108c | 3511 | { |
52f0bd74 AC |
3512 | int i; |
3513 | int len; | |
c906108c SS |
3514 | |
3515 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3516 | or 0 if none has been seen so far. | |
3517 | BEST_INDEX identifies the item for it. */ | |
3518 | ||
3519 | int best_index = -1; | |
3520 | int best = 0; | |
3521 | ||
b7589f7d DJ |
3522 | *exact_match = 0; |
3523 | ||
c906108c SS |
3524 | if (lineno <= 0) |
3525 | return -1; | |
3526 | if (l == 0) | |
3527 | return -1; | |
3528 | ||
3529 | len = l->nitems; | |
f8eba3c6 | 3530 | for (i = start; i < len; i++) |
c906108c | 3531 | { |
aa1ee363 | 3532 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3533 | |
3534 | if (item->line == lineno) | |
3535 | { | |
3536 | /* Return the first (lowest address) entry which matches. */ | |
3537 | *exact_match = 1; | |
3538 | return i; | |
3539 | } | |
3540 | ||
3541 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3542 | { | |
3543 | best = item->line; | |
3544 | best_index = i; | |
3545 | } | |
3546 | } | |
3547 | ||
3548 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3549 | return best_index; |
3550 | } | |
3551 | ||
3552 | int | |
fba45db2 | 3553 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3554 | { |
3555 | struct symtab_and_line sal; | |
433759f7 | 3556 | |
c906108c SS |
3557 | sal = find_pc_line (pc, 0); |
3558 | *startptr = sal.pc; | |
3559 | *endptr = sal.end; | |
3560 | return sal.symtab != 0; | |
3561 | } | |
3562 | ||
cd2bb709 PA |
3563 | /* Helper for find_function_start_sal. Does most of the work, except |
3564 | setting the sal's symbol. */ | |
aab2f208 | 3565 | |
cd2bb709 PA |
3566 | static symtab_and_line |
3567 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3568 | bool funfirstline) | |
aab2f208 | 3569 | { |
42ddae10 | 3570 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3571 | |
6e22494e JK |
3572 | if (funfirstline && sal.symtab != NULL |
3573 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3574 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3575 | { | |
42ddae10 | 3576 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3577 | |
42ddae10 | 3578 | sal.pc = func_addr; |
141c5cc4 JK |
3579 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3580 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3581 | return sal; |
3582 | } | |
3583 | ||
aab2f208 | 3584 | /* We always should have a line for the function start address. |
42ddae10 | 3585 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3586 | just the PC and hope that skip_prologue_sal (if requested) |
3587 | can find a line number for after the prologue. */ | |
42ddae10 | 3588 | if (sal.pc < func_addr) |
aab2f208 | 3589 | { |
51abb421 | 3590 | sal = {}; |
aab2f208 | 3591 | sal.pspace = current_program_space; |
42ddae10 | 3592 | sal.pc = func_addr; |
08be3fe3 | 3593 | sal.section = section; |
aab2f208 DE |
3594 | } |
3595 | ||
3596 | if (funfirstline) | |
3597 | skip_prologue_sal (&sal); | |
3598 | ||
3599 | return sal; | |
3600 | } | |
3601 | ||
42ddae10 PA |
3602 | /* See symtab.h. */ |
3603 | ||
cd2bb709 PA |
3604 | symtab_and_line |
3605 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3606 | bool funfirstline) | |
3607 | { | |
3608 | symtab_and_line sal | |
3609 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3610 | ||
3611 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3612 | the symtab and linenumber, but not a symbol. Fill in the | |
3613 | function symbol too. */ | |
3614 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3615 | ||
3616 | return sal; | |
3617 | } | |
3618 | ||
3619 | /* See symtab.h. */ | |
3620 | ||
42ddae10 PA |
3621 | symtab_and_line |
3622 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3623 | { | |
3624 | fixup_symbol_section (sym, NULL); | |
3625 | symtab_and_line sal | |
2b1ffcfd | 3626 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3627 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3628 | funfirstline); | |
42ddae10 PA |
3629 | sal.symbol = sym; |
3630 | return sal; | |
3631 | } | |
3632 | ||
3633 | ||
8c7a1ee8 EZ |
3634 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3635 | address for that function that has an entry in SYMTAB's line info | |
3636 | table. If such an entry cannot be found, return FUNC_ADDR | |
3637 | unaltered. */ | |
eca864fe | 3638 | |
70221824 | 3639 | static CORE_ADDR |
8c7a1ee8 EZ |
3640 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3641 | { | |
3642 | CORE_ADDR func_start, func_end; | |
3643 | struct linetable *l; | |
952a6d41 | 3644 | int i; |
8c7a1ee8 EZ |
3645 | |
3646 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3647 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3648 | if (l == NULL) |
3649 | return func_addr; | |
3650 | ||
3651 | /* Get the range for the function's PC values, or give up if we | |
3652 | cannot, for some reason. */ | |
3653 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3654 | return func_addr; | |
3655 | ||
3656 | /* Linetable entries are ordered by PC values, see the commentary in | |
3657 | symtab.h where `struct linetable' is defined. Thus, the first | |
3658 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3659 | address we are looking for. */ | |
3660 | for (i = 0; i < l->nitems; i++) | |
3661 | { | |
3662 | struct linetable_entry *item = &(l->item[i]); | |
3663 | ||
3664 | /* Don't use line numbers of zero, they mark special entries in | |
3665 | the table. See the commentary on symtab.h before the | |
3666 | definition of struct linetable. */ | |
3667 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3668 | return item->pc; | |
3669 | } | |
3670 | ||
3671 | return func_addr; | |
3672 | } | |
3673 | ||
059acae7 UW |
3674 | /* Adjust SAL to the first instruction past the function prologue. |
3675 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3676 | If the line number was explicitly specified then the SAL can still be |
3677 | updated, unless the language for SAL is assembler, in which case the SAL | |
3678 | will be left unchanged. | |
3679 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3680 | |
059acae7 UW |
3681 | void |
3682 | skip_prologue_sal (struct symtab_and_line *sal) | |
3683 | { | |
3684 | struct symbol *sym; | |
3685 | struct symtab_and_line start_sal; | |
8be455d7 | 3686 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3687 | struct obj_section *section; |
3688 | const char *name; | |
3689 | struct objfile *objfile; | |
3690 | struct gdbarch *gdbarch; | |
3977b71f | 3691 | const struct block *b, *function_block; |
8be455d7 | 3692 | int force_skip, skip; |
c906108c | 3693 | |
a4b411d6 | 3694 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3695 | if (sal->explicit_pc) |
3696 | return; | |
6c95b8df | 3697 | |
5b0e2db4 AB |
3698 | /* In assembly code, if the user asks for a specific line then we should |
3699 | not adjust the SAL. The user already has instruction level | |
3700 | visibility in this case, so selecting a line other than one requested | |
3701 | is likely to be the wrong choice. */ | |
3702 | if (sal->symtab != nullptr | |
3703 | && sal->explicit_line | |
3704 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3705 | return; | |
3706 | ||
5ed8105e PA |
3707 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3708 | ||
059acae7 | 3709 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3710 | |
059acae7 UW |
3711 | sym = find_pc_sect_function (sal->pc, sal->section); |
3712 | if (sym != NULL) | |
bccdca4a | 3713 | { |
059acae7 UW |
3714 | fixup_symbol_section (sym, NULL); |
3715 | ||
08be3fe3 | 3716 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3717 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3718 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3719 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3720 | } |
059acae7 UW |
3721 | else |
3722 | { | |
7c7b6655 TT |
3723 | struct bound_minimal_symbol msymbol |
3724 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3725 | |
7c7b6655 | 3726 | if (msymbol.minsym == NULL) |
5ed8105e | 3727 | return; |
059acae7 | 3728 | |
7c7b6655 | 3729 | objfile = msymbol.objfile; |
77e371c0 | 3730 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3731 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3732 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3733 | } |
3734 | ||
3735 | gdbarch = get_objfile_arch (objfile); | |
3736 | ||
8be455d7 JK |
3737 | /* Process the prologue in two passes. In the first pass try to skip the |
3738 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3739 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3740 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3741 | |
8be455d7 JK |
3742 | skip = 1; |
3743 | force_skip = 1; | |
059acae7 | 3744 | |
8be455d7 JK |
3745 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3746 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3747 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3748 | if (sym != NULL |
3749 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3750 | force_skip = 0; |
059acae7 | 3751 | |
8be455d7 JK |
3752 | saved_pc = pc; |
3753 | do | |
c906108c | 3754 | { |
8be455d7 | 3755 | pc = saved_pc; |
4309257c | 3756 | |
8be455d7 JK |
3757 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3758 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3759 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3760 | pc = overlay_unmapped_address (pc, section); | |
3761 | ||
3762 | /* Skip "first line" of function (which is actually its prologue). */ | |
3763 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3764 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3765 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3766 | if (skip) |
46a62268 | 3767 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3768 | |
3769 | /* For overlays, map pc back into its mapped VMA range. */ | |
3770 | pc = overlay_mapped_address (pc, section); | |
3771 | ||
3772 | /* Calculate line number. */ | |
059acae7 | 3773 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3774 | |
3775 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3776 | line is still part of the same function. */ | |
3777 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3778 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3779 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3780 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3781 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3782 | { |
3783 | /* First pc of next line */ | |
3784 | pc = start_sal.end; | |
3785 | /* Recalculate the line number (might not be N+1). */ | |
3786 | start_sal = find_pc_sect_line (pc, section, 0); | |
3787 | } | |
3788 | ||
3789 | /* On targets with executable formats that don't have a concept of | |
3790 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3791 | to `__main' in `main' between the prologue and before user | |
3792 | code. */ | |
3793 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3794 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3795 | { |
3796 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3797 | /* Recalculate the line number (might not be N+1). */ | |
3798 | start_sal = find_pc_sect_line (pc, section, 0); | |
3799 | force_skip = 1; | |
3800 | } | |
4309257c | 3801 | } |
8be455d7 | 3802 | while (!force_skip && skip--); |
4309257c | 3803 | |
8c7a1ee8 EZ |
3804 | /* If we still don't have a valid source line, try to find the first |
3805 | PC in the lineinfo table that belongs to the same function. This | |
3806 | happens with COFF debug info, which does not seem to have an | |
3807 | entry in lineinfo table for the code after the prologue which has | |
3808 | no direct relation to source. For example, this was found to be | |
3809 | the case with the DJGPP target using "gcc -gcoff" when the | |
3810 | compiler inserted code after the prologue to make sure the stack | |
3811 | is aligned. */ | |
8be455d7 | 3812 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3813 | { |
08be3fe3 | 3814 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3815 | /* Recalculate the line number. */ |
059acae7 | 3816 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3817 | } |
3818 | ||
059acae7 UW |
3819 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3820 | forward SAL to the end of the prologue. */ | |
3821 | if (sal->pc >= pc) | |
3822 | return; | |
3823 | ||
3824 | sal->pc = pc; | |
3825 | sal->section = section; | |
059acae7 UW |
3826 | sal->symtab = start_sal.symtab; |
3827 | sal->line = start_sal.line; | |
3828 | sal->end = start_sal.end; | |
c906108c | 3829 | |
edb3359d DJ |
3830 | /* Check if we are now inside an inlined function. If we can, |
3831 | use the call site of the function instead. */ | |
059acae7 | 3832 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3833 | function_block = NULL; |
3834 | while (b != NULL) | |
3835 | { | |
3836 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3837 | function_block = b; | |
3838 | else if (BLOCK_FUNCTION (b) != NULL) | |
3839 | break; | |
3840 | b = BLOCK_SUPERBLOCK (b); | |
3841 | } | |
3842 | if (function_block != NULL | |
3843 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3844 | { | |
059acae7 | 3845 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3846 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3847 | } |
c906108c | 3848 | } |
50641945 | 3849 | |
f1f58506 DE |
3850 | /* Given PC at the function's start address, attempt to find the |
3851 | prologue end using SAL information. Return zero if the skip fails. | |
3852 | ||
3853 | A non-optimized prologue traditionally has one SAL for the function | |
3854 | and a second for the function body. A single line function has | |
3855 | them both pointing at the same line. | |
3856 | ||
3857 | An optimized prologue is similar but the prologue may contain | |
3858 | instructions (SALs) from the instruction body. Need to skip those | |
3859 | while not getting into the function body. | |
3860 | ||
3861 | The functions end point and an increasing SAL line are used as | |
3862 | indicators of the prologue's endpoint. | |
3863 | ||
3864 | This code is based on the function refine_prologue_limit | |
3865 | (found in ia64). */ | |
3866 | ||
3867 | CORE_ADDR | |
3868 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3869 | { | |
3870 | struct symtab_and_line prologue_sal; | |
3871 | CORE_ADDR start_pc; | |
3872 | CORE_ADDR end_pc; | |
3873 | const struct block *bl; | |
3874 | ||
3875 | /* Get an initial range for the function. */ | |
3876 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3877 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3878 | ||
3879 | prologue_sal = find_pc_line (start_pc, 0); | |
3880 | if (prologue_sal.line != 0) | |
3881 | { | |
3882 | /* For languages other than assembly, treat two consecutive line | |
3883 | entries at the same address as a zero-instruction prologue. | |
3884 | The GNU assembler emits separate line notes for each instruction | |
3885 | in a multi-instruction macro, but compilers generally will not | |
3886 | do this. */ | |
3887 | if (prologue_sal.symtab->language != language_asm) | |
3888 | { | |
8435453b | 3889 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3890 | int idx = 0; |
3891 | ||
3892 | /* Skip any earlier lines, and any end-of-sequence marker | |
3893 | from a previous function. */ | |
3894 | while (linetable->item[idx].pc != prologue_sal.pc | |
3895 | || linetable->item[idx].line == 0) | |
3896 | idx++; | |
3897 | ||
3898 | if (idx+1 < linetable->nitems | |
3899 | && linetable->item[idx+1].line != 0 | |
3900 | && linetable->item[idx+1].pc == start_pc) | |
3901 | return start_pc; | |
3902 | } | |
3903 | ||
3904 | /* If there is only one sal that covers the entire function, | |
3905 | then it is probably a single line function, like | |
3906 | "foo(){}". */ | |
3907 | if (prologue_sal.end >= end_pc) | |
3908 | return 0; | |
3909 | ||
3910 | while (prologue_sal.end < end_pc) | |
3911 | { | |
3912 | struct symtab_and_line sal; | |
3913 | ||
3914 | sal = find_pc_line (prologue_sal.end, 0); | |
3915 | if (sal.line == 0) | |
3916 | break; | |
3917 | /* Assume that a consecutive SAL for the same (or larger) | |
3918 | line mark the prologue -> body transition. */ | |
3919 | if (sal.line >= prologue_sal.line) | |
3920 | break; | |
3921 | /* Likewise if we are in a different symtab altogether | |
3922 | (e.g. within a file included via #include). */ | |
3923 | if (sal.symtab != prologue_sal.symtab) | |
3924 | break; | |
3925 | ||
3926 | /* The line number is smaller. Check that it's from the | |
3927 | same function, not something inlined. If it's inlined, | |
3928 | then there is no point comparing the line numbers. */ | |
3929 | bl = block_for_pc (prologue_sal.end); | |
3930 | while (bl) | |
3931 | { | |
3932 | if (block_inlined_p (bl)) | |
3933 | break; | |
3934 | if (BLOCK_FUNCTION (bl)) | |
3935 | { | |
3936 | bl = NULL; | |
3937 | break; | |
3938 | } | |
3939 | bl = BLOCK_SUPERBLOCK (bl); | |
3940 | } | |
3941 | if (bl != NULL) | |
3942 | break; | |
3943 | ||
3944 | /* The case in which compiler's optimizer/scheduler has | |
3945 | moved instructions into the prologue. We look ahead in | |
3946 | the function looking for address ranges whose | |
3947 | corresponding line number is less the first one that we | |
3948 | found for the function. This is more conservative then | |
3949 | refine_prologue_limit which scans a large number of SALs | |
3950 | looking for any in the prologue. */ | |
3951 | prologue_sal = sal; | |
3952 | } | |
3953 | } | |
3954 | ||
3955 | if (prologue_sal.end < end_pc) | |
3956 | /* Return the end of this line, or zero if we could not find a | |
3957 | line. */ | |
3958 | return prologue_sal.end; | |
3959 | else | |
3960 | /* Don't return END_PC, which is past the end of the function. */ | |
3961 | return prologue_sal.pc; | |
3962 | } | |
bf223d3e PA |
3963 | |
3964 | /* See symtab.h. */ | |
3965 | ||
3966 | symbol * | |
3967 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3968 | { | |
4024cf2b PA |
3969 | CORE_ADDR func_addr; |
3970 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3971 | return NULL; |
3972 | ||
4024cf2b | 3973 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3974 | if (sym != NULL |
3975 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3976 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3977 | return sym; |
3978 | ||
3979 | return NULL; | |
3980 | } | |
3981 | ||
f1f58506 | 3982 | \f |
c906108c SS |
3983 | /* If P is of the form "operator[ \t]+..." where `...' is |
3984 | some legitimate operator text, return a pointer to the | |
3985 | beginning of the substring of the operator text. | |
3986 | Otherwise, return "". */ | |
eca864fe | 3987 | |
96142726 TT |
3988 | static const char * |
3989 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3990 | { |
3991 | *end = ""; | |
8090b426 | 3992 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3993 | return *end; |
8090b426 | 3994 | p += CP_OPERATOR_LEN; |
c906108c SS |
3995 | |
3996 | /* Don't get faked out by `operator' being part of a longer | |
3997 | identifier. */ | |
c5aa993b | 3998 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3999 | return *end; |
4000 | ||
4001 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4002 | while (*p == ' ' || *p == '\t') | |
4003 | p++; | |
4004 | ||
c378eb4e | 4005 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4006 | |
c5aa993b | 4007 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4008 | { |
96142726 | 4009 | const char *q = p + 1; |
433759f7 | 4010 | |
c5aa993b | 4011 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4012 | q++; |
4013 | *end = q; | |
4014 | return p; | |
4015 | } | |
4016 | ||
53e8ad3d MS |
4017 | while (*p) |
4018 | switch (*p) | |
4019 | { | |
4020 | case '\\': /* regexp quoting */ | |
4021 | if (p[1] == '*') | |
4022 | { | |
3e43a32a | 4023 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4024 | *end = p + 3; |
4025 | else /* 'operator\*' */ | |
4026 | *end = p + 2; | |
4027 | return p; | |
4028 | } | |
4029 | else if (p[1] == '[') | |
4030 | { | |
4031 | if (p[2] == ']') | |
3e43a32a MS |
4032 | error (_("mismatched quoting on brackets, " |
4033 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4034 | else if (p[2] == '\\' && p[3] == ']') |
4035 | { | |
4036 | *end = p + 4; /* 'operator\[\]' */ | |
4037 | return p; | |
4038 | } | |
4039 | else | |
8a3fe4f8 | 4040 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4041 | } |
9af17804 | 4042 | else |
53e8ad3d | 4043 | { |
c378eb4e | 4044 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
4045 | p++; |
4046 | continue; | |
4047 | } | |
4048 | break; | |
4049 | case '!': | |
4050 | case '=': | |
4051 | case '*': | |
4052 | case '/': | |
4053 | case '%': | |
4054 | case '^': | |
4055 | if (p[1] == '=') | |
4056 | *end = p + 2; | |
4057 | else | |
4058 | *end = p + 1; | |
4059 | return p; | |
4060 | case '<': | |
4061 | case '>': | |
4062 | case '+': | |
4063 | case '-': | |
4064 | case '&': | |
4065 | case '|': | |
4066 | if (p[0] == '-' && p[1] == '>') | |
4067 | { | |
c378eb4e | 4068 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4069 | if (p[2] == '*') |
4070 | { | |
4071 | *end = p + 3; /* 'operator->*' */ | |
4072 | return p; | |
4073 | } | |
4074 | else if (p[2] == '\\') | |
4075 | { | |
4076 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4077 | return p; | |
4078 | } | |
4079 | else | |
4080 | { | |
4081 | *end = p + 2; /* 'operator->' */ | |
4082 | return p; | |
4083 | } | |
4084 | } | |
4085 | if (p[1] == '=' || p[1] == p[0]) | |
4086 | *end = p + 2; | |
4087 | else | |
4088 | *end = p + 1; | |
4089 | return p; | |
4090 | case '~': | |
4091 | case ',': | |
c5aa993b | 4092 | *end = p + 1; |
53e8ad3d MS |
4093 | return p; |
4094 | case '(': | |
4095 | if (p[1] != ')') | |
3e43a32a MS |
4096 | error (_("`operator ()' must be specified " |
4097 | "without whitespace in `()'")); | |
c5aa993b | 4098 | *end = p + 2; |
53e8ad3d MS |
4099 | return p; |
4100 | case '?': | |
4101 | if (p[1] != ':') | |
3e43a32a MS |
4102 | error (_("`operator ?:' must be specified " |
4103 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4104 | *end = p + 2; |
4105 | return p; | |
4106 | case '[': | |
4107 | if (p[1] != ']') | |
3e43a32a MS |
4108 | error (_("`operator []' must be specified " |
4109 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4110 | *end = p + 2; |
4111 | return p; | |
4112 | default: | |
8a3fe4f8 | 4113 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4114 | break; |
4115 | } | |
4116 | ||
c906108c SS |
4117 | *end = ""; |
4118 | return *end; | |
4119 | } | |
c906108c | 4120 | \f |
c5aa993b | 4121 | |
28cd9371 PW |
4122 | /* What part to match in a file name. */ |
4123 | ||
4124 | struct filename_partial_match_opts | |
4125 | { | |
4126 | /* Only match the directory name part. */ | |
491144b5 | 4127 | bool dirname = false; |
28cd9371 PW |
4128 | |
4129 | /* Only match the basename part. */ | |
491144b5 | 4130 | bool basename = false; |
28cd9371 PW |
4131 | }; |
4132 | ||
9fdc877b DE |
4133 | /* Data structure to maintain printing state for output_source_filename. */ |
4134 | ||
4135 | struct output_source_filename_data | |
4136 | { | |
28cd9371 PW |
4137 | /* Output only filenames matching REGEXP. */ |
4138 | std::string regexp; | |
4139 | gdb::optional<compiled_regex> c_regexp; | |
4140 | /* Possibly only match a part of the filename. */ | |
4141 | filename_partial_match_opts partial_match; | |
4142 | ||
4143 | ||
9fdc877b DE |
4144 | /* Cache of what we've seen so far. */ |
4145 | struct filename_seen_cache *filename_seen_cache; | |
4146 | ||
4147 | /* Flag of whether we're printing the first one. */ | |
4148 | int first; | |
4149 | }; | |
4150 | ||
c94fdfd0 | 4151 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4152 | NAME is the name to print. |
4153 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4154 | |
c94fdfd0 | 4155 | static void |
9fdc877b DE |
4156 | output_source_filename (const char *name, |
4157 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4158 | { |
4159 | /* Since a single source file can result in several partial symbol | |
4160 | tables, we need to avoid printing it more than once. Note: if | |
4161 | some of the psymtabs are read in and some are not, it gets | |
4162 | printed both under "Source files for which symbols have been | |
4163 | read" and "Source files for which symbols will be read in on | |
4164 | demand". I consider this a reasonable way to deal with the | |
4165 | situation. I'm not sure whether this can also happen for | |
4166 | symtabs; it doesn't hurt to check. */ | |
4167 | ||
4168 | /* Was NAME already seen? */ | |
bbf2f4df | 4169 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4170 | { |
4171 | /* Yes; don't print it again. */ | |
4172 | return; | |
4173 | } | |
9fdc877b | 4174 | |
28cd9371 PW |
4175 | /* Does it match data->regexp? */ |
4176 | if (data->c_regexp.has_value ()) | |
4177 | { | |
4178 | const char *to_match; | |
4179 | std::string dirname; | |
4180 | ||
4181 | if (data->partial_match.dirname) | |
4182 | { | |
4183 | dirname = ldirname (name); | |
4184 | to_match = dirname.c_str (); | |
4185 | } | |
4186 | else if (data->partial_match.basename) | |
4187 | to_match = lbasename (name); | |
4188 | else | |
4189 | to_match = name; | |
4190 | ||
4191 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4192 | return; | |
4193 | } | |
4194 | ||
4195 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4196 | if (! data->first) |
4197 | printf_filtered (", "); | |
4198 | data->first = 0; | |
c906108c SS |
4199 | |
4200 | wrap_here (""); | |
1ed9f74e | 4201 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4202 | } |
c906108c | 4203 | |
ccefe4c4 | 4204 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4205 | |
ccefe4c4 | 4206 | static void |
533a737e | 4207 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4208 | void *data) |
4209 | { | |
19ba03f4 SM |
4210 | output_source_filename (fullname ? fullname : filename, |
4211 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4212 | } |
4213 | ||
28cd9371 PW |
4214 | using isrc_flag_option_def |
4215 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4216 | ||
4217 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4218 | ||
4219 | isrc_flag_option_def { | |
4220 | "dirname", | |
4221 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4222 | N_("Show only the files having a dirname matching REGEXP."), | |
4223 | }, | |
4224 | ||
4225 | isrc_flag_option_def { | |
4226 | "basename", | |
4227 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4228 | N_("Show only the files having a basename matching REGEXP."), | |
4229 | }, | |
4230 | ||
4231 | }; | |
4232 | ||
4233 | /* Create an option_def_group for the "info sources" options, with | |
4234 | ISRC_OPTS as context. */ | |
4235 | ||
4236 | static inline gdb::option::option_def_group | |
4237 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4238 | { | |
4239 | return {{info_sources_option_defs}, isrc_opts}; | |
4240 | } | |
4241 | ||
4242 | /* Prints the header message for the source files that will be printed | |
4243 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4244 | that tells what will or has been done with the symbols of the | |
4245 | matching source files. */ | |
4246 | ||
c906108c | 4247 | static void |
28cd9371 PW |
4248 | print_info_sources_header (const char *symbol_msg, |
4249 | const struct output_source_filename_data *data) | |
4250 | { | |
4251 | puts_filtered (symbol_msg); | |
4252 | if (!data->regexp.empty ()) | |
4253 | { | |
4254 | if (data->partial_match.dirname) | |
4255 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4256 | data->regexp.c_str ()); | |
4257 | else if (data->partial_match.basename) | |
4258 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4259 | data->regexp.c_str ()); | |
4260 | else | |
4261 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4262 | data->regexp.c_str ()); | |
4263 | } | |
4264 | puts_filtered ("\n"); | |
4265 | } | |
4266 | ||
4267 | /* Completer for "info sources". */ | |
4268 | ||
4269 | static void | |
4270 | info_sources_command_completer (cmd_list_element *ignore, | |
4271 | completion_tracker &tracker, | |
4272 | const char *text, const char *word) | |
4273 | { | |
4274 | const auto group = make_info_sources_options_def_group (nullptr); | |
4275 | if (gdb::option::complete_options | |
4276 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4277 | return; | |
4278 | } | |
4279 | ||
4280 | static void | |
4281 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4282 | { |
9fdc877b | 4283 | struct output_source_filename_data data; |
c5aa993b | 4284 | |
c906108c SS |
4285 | if (!have_full_symbols () && !have_partial_symbols ()) |
4286 | { | |
8a3fe4f8 | 4287 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4288 | } |
c5aa993b | 4289 | |
bbf2f4df PA |
4290 | filename_seen_cache filenames_seen; |
4291 | ||
28cd9371 PW |
4292 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4293 | ||
4294 | gdb::option::process_options | |
4295 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4296 | |
28cd9371 PW |
4297 | if (args != NULL && *args != '\000') |
4298 | data.regexp = args; | |
c906108c | 4299 | |
28cd9371 | 4300 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4301 | data.first = 1; |
28cd9371 PW |
4302 | |
4303 | if (data.partial_match.dirname && data.partial_match.basename) | |
4304 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4305 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4306 | && data.regexp.empty ()) | |
4307 | error (_("Missing REGEXP for 'info sources'.")); | |
4308 | ||
4309 | if (data.regexp.empty ()) | |
4310 | data.c_regexp.reset (); | |
4311 | else | |
4312 | { | |
4313 | int cflags = REG_NOSUB; | |
4314 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4315 | cflags |= REG_ICASE; | |
4316 | #endif | |
4317 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4318 | _("Invalid regexp")); | |
4319 | } | |
4320 | ||
4321 | print_info_sources_header | |
4322 | (_("Source files for which symbols have been read in:\n"), &data); | |
4323 | ||
2030c079 | 4324 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4325 | { |
b669c953 | 4326 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4327 | { |
4328 | for (symtab *s : compunit_filetabs (cu)) | |
4329 | { | |
4330 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4331 | |
8b31193a TT |
4332 | output_source_filename (fullname, &data); |
4333 | } | |
4334 | } | |
4335 | } | |
c906108c | 4336 | printf_filtered ("\n\n"); |
c5aa993b | 4337 | |
28cd9371 PW |
4338 | print_info_sources_header |
4339 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4340 | |
bbf2f4df | 4341 | filenames_seen.clear (); |
9fdc877b | 4342 | data.first = 1; |
bb4142cf DE |
4343 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4344 | 1 /*need_fullname*/); | |
c906108c SS |
4345 | printf_filtered ("\n"); |
4346 | } | |
4347 | ||
fbd9ab74 JK |
4348 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4349 | non-zero compare only lbasename of FILES. */ | |
4350 | ||
c906108c | 4351 | static int |
96142726 | 4352 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4353 | { |
4354 | int i; | |
4355 | ||
4356 | if (file != NULL && nfiles != 0) | |
4357 | { | |
4358 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4359 | { |
fbd9ab74 JK |
4360 | if (compare_filenames_for_search (file, (basenames |
4361 | ? lbasename (files[i]) | |
4362 | : files[i]))) | |
c5aa993b JM |
4363 | return 1; |
4364 | } | |
c906108c SS |
4365 | } |
4366 | else if (nfiles == 0) | |
4367 | return 1; | |
4368 | return 0; | |
4369 | } | |
4370 | ||
b52109bc | 4371 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4372 | sort symbols, not minimal symbols. */ |
eca864fe | 4373 | |
b9c04fb2 TT |
4374 | int |
4375 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4376 | const symbol_search &sym_b) | |
434d2d4f | 4377 | { |
b52109bc DE |
4378 | int c; |
4379 | ||
b9c04fb2 TT |
4380 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4381 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4382 | if (c != 0) |
4383 | return c; | |
434d2d4f | 4384 | |
b9c04fb2 TT |
4385 | if (sym_a.block != sym_b.block) |
4386 | return sym_a.block - sym_b.block; | |
b52109bc | 4387 | |
b9c04fb2 TT |
4388 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4389 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4390 | } |
4391 | ||
12615cba PW |
4392 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4393 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4394 | ||
4395 | bool | |
4396 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4397 | const struct symbol *sym) | |
4398 | { | |
4399 | struct type *sym_type; | |
4400 | std::string printed_sym_type_name; | |
4401 | ||
4402 | if (symbol_lookup_debug > 1) | |
4403 | { | |
4404 | fprintf_unfiltered (gdb_stdlog, | |
4405 | "treg_matches_sym_type_name\n sym %s\n", | |
4406 | SYMBOL_NATURAL_NAME (sym)); | |
4407 | } | |
4408 | ||
4409 | sym_type = SYMBOL_TYPE (sym); | |
4410 | if (sym_type == NULL) | |
4411 | return false; | |
4412 | ||
43d397ca PW |
4413 | { |
4414 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4415 | |
12615cba | 4416 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4417 | } |
4418 | ||
12615cba PW |
4419 | |
4420 | if (symbol_lookup_debug > 1) | |
4421 | { | |
4422 | fprintf_unfiltered (gdb_stdlog, | |
4423 | " sym_type_name %s\n", | |
4424 | printed_sym_type_name.c_str ()); | |
4425 | } | |
4426 | ||
4427 | ||
4428 | if (printed_sym_type_name.empty ()) | |
4429 | return false; | |
4430 | ||
4431 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4432 | } | |
4433 | ||
4434 | ||
b9c04fb2 | 4435 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4436 | |
4437 | static void | |
b9c04fb2 | 4438 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4439 | { |
b9c04fb2 TT |
4440 | std::sort (result->begin (), result->end ()); |
4441 | result->erase (std::unique (result->begin (), result->end ()), | |
4442 | result->end ()); | |
434d2d4f | 4443 | } |
5bd98722 | 4444 | |
c906108c | 4445 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4446 | returning the results. |
c906108c SS |
4447 | |
4448 | Only symbols of KIND are searched: | |
e8930875 | 4449 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4450 | and constants (enums). |
4451 | if T_REGEXP is not NULL, only returns var that have | |
4452 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4453 | FUNCTIONS_DOMAIN - search all functions |
4454 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4455 | ALL_DOMAIN - an internal error for this function |
c906108c | 4456 | |
b52109bc DE |
4457 | Within each file the results are sorted locally; each symtab's global and |
4458 | static blocks are separately alphabetized. | |
4acfdd20 AB |
4459 | Duplicate entries are removed. |
4460 | ||
4461 | When EXCLUDE_MINSYMS is false then matching minsyms are also returned, | |
4462 | otherwise they are excluded. */ | |
c378eb4e | 4463 | |
b9c04fb2 | 4464 | std::vector<symbol_search> |
96142726 | 4465 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4466 | const char *t_regexp, |
4acfdd20 AB |
4467 | int nfiles, const char *files[], |
4468 | bool exclude_minsyms) | |
c906108c | 4469 | { |
346d1dfe | 4470 | const struct blockvector *bv; |
582942f4 | 4471 | const struct block *b; |
52f0bd74 | 4472 | int i = 0; |
8157b174 | 4473 | struct block_iterator iter; |
52f0bd74 | 4474 | struct symbol *sym; |
c906108c | 4475 | int found_misc = 0; |
bc043ef3 | 4476 | static const enum minimal_symbol_type types[] |
eb86c5e2 | 4477 | = {mst_data, mst_text, mst_unknown}; |
bc043ef3 | 4478 | static const enum minimal_symbol_type types2[] |
eb86c5e2 | 4479 | = {mst_bss, mst_file_text, mst_unknown}; |
bc043ef3 | 4480 | static const enum minimal_symbol_type types3[] |
eb86c5e2 | 4481 | = {mst_file_data, mst_solib_trampoline, mst_unknown}; |
bc043ef3 | 4482 | static const enum minimal_symbol_type types4[] |
eb86c5e2 | 4483 | = {mst_file_bss, mst_text_gnu_ifunc, mst_unknown}; |
c906108c SS |
4484 | enum minimal_symbol_type ourtype; |
4485 | enum minimal_symbol_type ourtype2; | |
4486 | enum minimal_symbol_type ourtype3; | |
4487 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4488 | std::vector<symbol_search> result; |
2d7cc5c7 | 4489 | gdb::optional<compiled_regex> preg; |
12615cba | 4490 | gdb::optional<compiled_regex> treg; |
c906108c | 4491 | |
e8930875 JK |
4492 | gdb_assert (kind <= TYPES_DOMAIN); |
4493 | ||
8903c50d TT |
4494 | ourtype = types[kind]; |
4495 | ourtype2 = types2[kind]; | |
4496 | ourtype3 = types3[kind]; | |
4497 | ourtype4 = types4[kind]; | |
c906108c | 4498 | |
c906108c SS |
4499 | if (regexp != NULL) |
4500 | { | |
4501 | /* Make sure spacing is right for C++ operators. | |
4502 | This is just a courtesy to make the matching less sensitive | |
4503 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4504 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4505 | const char *opend; |
4506 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4507 | |
c906108c | 4508 | if (*opname) |
c5aa993b | 4509 | { |
3e43a32a MS |
4510 | int fix = -1; /* -1 means ok; otherwise number of |
4511 | spaces needed. */ | |
433759f7 | 4512 | |
c5aa993b JM |
4513 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4514 | { | |
c378eb4e | 4515 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4516 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4517 | fix = 1; | |
4518 | } | |
4519 | else | |
4520 | { | |
c378eb4e | 4521 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4522 | if (opname[-1] == ' ') |
4523 | fix = 0; | |
4524 | } | |
c378eb4e | 4525 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4526 | if (fix >= 0) |
4527 | { | |
045f55a6 | 4528 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4529 | |
c5aa993b JM |
4530 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4531 | regexp = tmp; | |
4532 | } | |
4533 | } | |
4534 | ||
2d7cc5c7 PA |
4535 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4536 | ? REG_ICASE : 0); | |
4537 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4538 | } |
4539 | ||
12615cba PW |
4540 | if (t_regexp != NULL) |
4541 | { | |
4542 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4543 | ? REG_ICASE : 0); | |
4544 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4545 | } | |
4546 | ||
c906108c SS |
4547 | /* Search through the partial symtabs *first* for all symbols |
4548 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4549 | the machinery below. */ |
14bc53a8 PA |
4550 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4551 | { | |
4552 | return file_matches (filename, files, nfiles, | |
4553 | basenames); | |
4554 | }, | |
b5ec771e | 4555 | lookup_name_info::match_any (), |
14bc53a8 PA |
4556 | [&] (const char *symname) |
4557 | { | |
12615cba PW |
4558 | return (!preg.has_value () |
4559 | || preg->exec (symname, | |
4560 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4561 | }, |
4562 | NULL, | |
4563 | kind); | |
c906108c SS |
4564 | |
4565 | /* Here, we search through the minimal symbol tables for functions | |
4566 | and variables that match, and force their symbols to be read. | |
4567 | This is in particular necessary for demangled variable names, | |
4568 | which are no longer put into the partial symbol tables. | |
4569 | The symbol will then be found during the scan of symtabs below. | |
4570 | ||
4571 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4572 | for the function, for variables we have to call |
4573 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4574 | has debug info. | |
c906108c | 4575 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4576 | any matching symbols without debug info. |
4577 | We only search the objfile the msymbol came from, we no longer search | |
4578 | all objfiles. In large programs (1000s of shared libs) searching all | |
4579 | objfiles is not worth the pain. */ | |
c906108c | 4580 | |
176620f1 | 4581 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4582 | { |
2030c079 | 4583 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4584 | { |
7932255d | 4585 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4586 | { |
4587 | QUIT; | |
89295b4d | 4588 | |
5325b9bf TT |
4589 | if (msymbol->created_by_gdb) |
4590 | continue; | |
422d65e7 | 4591 | |
5325b9bf TT |
4592 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4593 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4594 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4595 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4596 | { | |
4597 | if (!preg.has_value () | |
4598 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4599 | NULL, 0) == 0) | |
4600 | { | |
4601 | /* Note: An important side-effect of these | |
4602 | lookup functions is to expand the symbol | |
4603 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4604 | the next loop on compunits. */ |
5325b9bf TT |
4605 | if (kind == FUNCTIONS_DOMAIN |
4606 | ? (find_pc_compunit_symtab | |
4607 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4608 | == NULL) | |
4609 | : (lookup_symbol_in_objfile_from_linkage_name | |
4610 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4611 | VAR_DOMAIN) | |
4612 | .symbol == NULL)) | |
4613 | found_misc = 1; | |
4614 | } | |
4615 | } | |
4616 | } | |
4617 | } | |
c906108c SS |
4618 | } |
4619 | ||
2030c079 | 4620 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4621 | { |
b669c953 | 4622 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4623 | { |
4624 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4625 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4626 | { | |
4627 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4628 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4629 | { | |
4630 | struct symtab *real_symtab = symbol_symtab (sym); | |
4631 | ||
4632 | QUIT; | |
4633 | ||
4634 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4635 | not need to be a substring of symtab_to_fullname as | |
4636 | it may contain "./" etc. */ | |
4637 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4638 | || ((basenames_may_differ | |
4639 | || file_matches (lbasename (real_symtab->filename), | |
4640 | files, nfiles, 1)) | |
4641 | && file_matches (symtab_to_fullname (real_symtab), | |
4642 | files, nfiles, 0))) | |
4643 | && ((!preg.has_value () | |
4644 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4645 | NULL, 0) == 0) | |
4646 | && ((kind == VARIABLES_DOMAIN | |
4647 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4648 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4649 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4650 | /* LOC_CONST can be used for more than | |
4651 | just enums, e.g., c++ static const | |
4652 | members. We only want to skip enums | |
4653 | here. */ | |
4654 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4655 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4656 | == TYPE_CODE_ENUM)) | |
4657 | && (!treg.has_value () | |
4658 | || treg_matches_sym_type_name (*treg, sym))) | |
4659 | || (kind == FUNCTIONS_DOMAIN | |
4660 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4661 | && (!treg.has_value () | |
4662 | || treg_matches_sym_type_name (*treg, | |
4663 | sym))) | |
4664 | || (kind == TYPES_DOMAIN | |
d8f27c60 AB |
4665 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF |
4666 | && SYMBOL_DOMAIN (sym) != MODULE_DOMAIN)))) | |
d8aeb77f TT |
4667 | { |
4668 | /* match */ | |
4669 | result.emplace_back (i, sym); | |
4670 | } | |
4671 | } | |
4672 | } | |
4673 | } | |
4674 | } | |
c906108c | 4675 | |
b9c04fb2 TT |
4676 | if (!result.empty ()) |
4677 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4678 | |
c906108c | 4679 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4680 | no debug symbols, then add matching minsyms. But if the user wants |
4681 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4682 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4683 | |
a8462bbf | 4684 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4acfdd20 | 4685 | && !exclude_minsyms |
a8462bbf | 4686 | && !treg.has_value ()) |
c906108c | 4687 | { |
2030c079 | 4688 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4689 | { |
7932255d | 4690 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4691 | { |
4692 | QUIT; | |
89295b4d | 4693 | |
5325b9bf TT |
4694 | if (msymbol->created_by_gdb) |
4695 | continue; | |
422d65e7 | 4696 | |
5325b9bf TT |
4697 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4698 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4699 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4700 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4701 | { | |
4702 | if (!preg.has_value () | |
4703 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4704 | NULL, 0) == 0) | |
4705 | { | |
4706 | /* For functions we can do a quick check of whether the | |
4707 | symbol might be found via find_pc_symtab. */ | |
4708 | if (kind != FUNCTIONS_DOMAIN | |
4709 | || (find_pc_compunit_symtab | |
4710 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4711 | == NULL)) | |
4712 | { | |
4713 | if (lookup_symbol_in_objfile_from_linkage_name | |
4714 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4715 | VAR_DOMAIN) | |
4716 | .symbol == NULL) | |
4717 | { | |
4718 | /* match */ | |
4719 | result.emplace_back (i, msymbol, objfile); | |
4720 | } | |
4721 | } | |
4722 | } | |
4723 | } | |
4724 | } | |
4725 | } | |
c906108c SS |
4726 | } |
4727 | ||
b9c04fb2 | 4728 | return result; |
c906108c SS |
4729 | } |
4730 | ||
4731 | /* Helper function for symtab_symbol_info, this function uses | |
4732 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4733 | regarding the match to gdb_stdout. If LAST is not NULL, |
4734 | print file and line number information for the symbol as | |
4735 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4736 | |
c906108c | 4737 | static void |
8903c50d | 4738 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4739 | struct symbol *sym, |
05cba821 | 4740 | int block, const char *last) |
c906108c | 4741 | { |
43d397ca | 4742 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4743 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4744 | |
c7dcbf88 | 4745 | if (last != NULL) |
c906108c | 4746 | { |
c7dcbf88 | 4747 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4748 | |
c7dcbf88 AA |
4749 | if (filename_cmp (last, s_filename) != 0) |
4750 | { | |
4751 | fputs_filtered ("\nFile ", gdb_stdout); | |
1ed9f74e | 4752 | fputs_styled (s_filename, file_name_style.style (), gdb_stdout); |
c7dcbf88 AA |
4753 | fputs_filtered (":\n", gdb_stdout); |
4754 | } | |
4755 | ||
4756 | if (SYMBOL_LINE (sym) != 0) | |
4757 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4758 | else | |
4759 | puts_filtered ("\t"); | |
4760 | } | |
b744723f | 4761 | |
176620f1 | 4762 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4763 | printf_filtered ("static "); |
c5aa993b | 4764 | |
c378eb4e | 4765 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4766 | if (kind == TYPES_DOMAIN |
4767 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 AB |
4768 | { |
4769 | /* FIXME: For C (and C++) we end up with a difference in output here | |
4770 | between how a typedef is printed, and non-typedefs are printed. | |
4771 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4772 | appear C-like, while TYPE_PRINT doesn't. | |
4773 | ||
4774 | For the struct printing case below, things are worse, we force | |
4775 | printing of the ";" in this function, which is going to be wrong | |
4776 | for languages that don't require a ";" between statements. */ | |
4777 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_TYPEDEF) | |
4778 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); | |
4779 | else | |
4780 | { | |
4781 | type_print (SYMBOL_TYPE (sym), "", gdb_stdout, -1); | |
4782 | printf_filtered ("\n"); | |
4783 | } | |
4784 | } | |
c378eb4e | 4785 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4786 | else if (kind < TYPES_DOMAIN |
4787 | || (kind == TYPES_DOMAIN | |
4788 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4789 | { |
4790 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4791 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4792 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4793 | gdb_stdout, 0); |
c906108c SS |
4794 | |
4795 | printf_filtered (";\n"); | |
4796 | } | |
c906108c SS |
4797 | } |
4798 | ||
4799 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4800 | for non-debugging symbols to gdb_stdout. */ |
4801 | ||
c906108c | 4802 | static void |
7c7b6655 | 4803 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4804 | { |
7c7b6655 | 4805 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4806 | char *tmp; |
4807 | ||
d80b854b | 4808 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4809 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4810 | & (CORE_ADDR) 0xffffffff, |
4811 | 8); | |
3ac4495a | 4812 | else |
77e371c0 | 4813 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4814 | 16); |
1ed9f74e PW |
4815 | fputs_styled (tmp, address_style.style (), gdb_stdout); |
4816 | fputs_filtered (" ", gdb_stdout); | |
4817 | if (msymbol.minsym->text_p ()) | |
4818 | fputs_styled (MSYMBOL_PRINT_NAME (msymbol.minsym), | |
4819 | function_name_style.style (), | |
4820 | gdb_stdout); | |
4821 | else | |
4822 | fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), gdb_stdout); | |
4823 | fputs_filtered ("\n", gdb_stdout); | |
c906108c SS |
4824 | } |
4825 | ||
4826 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4827 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4828 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4829 | matches. */ |
4830 | ||
c906108c | 4831 | static void |
4acfdd20 | 4832 | symtab_symbol_info (bool quiet, bool exclude_minsyms, |
12615cba PW |
4833 | const char *regexp, enum search_domain kind, |
4834 | const char *t_regexp, int from_tty) | |
c906108c | 4835 | { |
bc043ef3 | 4836 | static const char * const classnames[] = |
e8930875 | 4837 | {"variable", "function", "type"}; |
c7dcbf88 | 4838 | const char *last_filename = ""; |
c906108c SS |
4839 | int first = 1; |
4840 | ||
e8930875 JK |
4841 | gdb_assert (kind <= TYPES_DOMAIN); |
4842 | ||
b16507e0 AB |
4843 | if (regexp != nullptr && *regexp == '\0') |
4844 | regexp = nullptr; | |
4845 | ||
c378eb4e | 4846 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba | 4847 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4acfdd20 AB |
4848 | t_regexp, 0, NULL, |
4849 | exclude_minsyms); | |
c906108c | 4850 | |
12615cba PW |
4851 | if (!quiet) |
4852 | { | |
4853 | if (regexp != NULL) | |
4854 | { | |
4855 | if (t_regexp != NULL) | |
4856 | printf_filtered | |
4857 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 4858 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
4859 | classnames[kind], regexp, t_regexp); |
4860 | else | |
4861 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4862 | classnames[kind], regexp); | |
4863 | } | |
4864 | else | |
4865 | { | |
4866 | if (t_regexp != NULL) | |
4867 | printf_filtered | |
4868 | (_("All defined %ss" | |
0c95f9ed | 4869 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
4870 | classnames[kind], t_regexp); |
4871 | else | |
4872 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4873 | } | |
4874 | } | |
c906108c | 4875 | |
b9c04fb2 | 4876 | for (const symbol_search &p : symbols) |
c906108c SS |
4877 | { |
4878 | QUIT; | |
4879 | ||
b9c04fb2 | 4880 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4881 | { |
4882 | if (first) | |
4883 | { | |
12615cba PW |
4884 | if (!quiet) |
4885 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4886 | first = 0; |
4887 | } | |
b9c04fb2 | 4888 | print_msymbol_info (p.msymbol); |
c5aa993b | 4889 | } |
c906108c | 4890 | else |
c5aa993b JM |
4891 | { |
4892 | print_symbol_info (kind, | |
b9c04fb2 TT |
4893 | p.symbol, |
4894 | p.block, | |
c5aa993b | 4895 | last_filename); |
d01060f0 | 4896 | last_filename |
b9c04fb2 | 4897 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4898 | } |
c906108c | 4899 | } |
c906108c SS |
4900 | } |
4901 | ||
4acfdd20 AB |
4902 | /* Structure to hold the values of the options used by the 'info variables' |
4903 | and 'info functions' commands. These correspond to the -q, -t, and -n | |
4904 | options. */ | |
4905 | ||
4906 | struct info_print_options | |
4907 | { | |
491144b5 CB |
4908 | bool quiet = false; |
4909 | bool exclude_minsyms = false; | |
4acfdd20 AB |
4910 | char *type_regexp = nullptr; |
4911 | ||
4912 | ~info_print_options () | |
4913 | { | |
4914 | xfree (type_regexp); | |
4915 | } | |
4916 | }; | |
4917 | ||
4918 | /* The options used by the 'info variables' and 'info functions' | |
4919 | commands. */ | |
4920 | ||
4921 | static const gdb::option::option_def info_print_options_defs[] = { | |
4922 | gdb::option::boolean_option_def<info_print_options> { | |
4923 | "q", | |
4924 | [] (info_print_options *opt) { return &opt->quiet; }, | |
4925 | nullptr, /* show_cmd_cb */ | |
4926 | nullptr /* set_doc */ | |
4927 | }, | |
4928 | ||
4929 | gdb::option::boolean_option_def<info_print_options> { | |
4930 | "n", | |
4931 | [] (info_print_options *opt) { return &opt->exclude_minsyms; }, | |
4932 | nullptr, /* show_cmd_cb */ | |
4933 | nullptr /* set_doc */ | |
4934 | }, | |
4935 | ||
4936 | gdb::option::string_option_def<info_print_options> { | |
4937 | "t", | |
4938 | [] (info_print_options *opt) { return &opt->type_regexp; }, | |
4939 | nullptr, /* show_cmd_cb */ | |
4940 | nullptr /* set_doc */ | |
4941 | } | |
4942 | }; | |
4943 | ||
4944 | /* Returns the option group used by 'info variables' and 'info | |
4945 | functions'. */ | |
4946 | ||
4947 | static gdb::option::option_def_group | |
4948 | make_info_print_options_def_group (info_print_options *opts) | |
4949 | { | |
4950 | return {{info_print_options_defs}, opts}; | |
4951 | } | |
4952 | ||
4953 | /* Command completer for 'info variables' and 'info functions'. */ | |
4954 | ||
4955 | static void | |
4956 | info_print_command_completer (struct cmd_list_element *ignore, | |
4957 | completion_tracker &tracker, | |
4958 | const char *text, const char * /* word */) | |
4959 | { | |
4960 | const auto group | |
4961 | = make_info_print_options_def_group (nullptr); | |
4962 | if (gdb::option::complete_options | |
4963 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4964 | return; | |
4965 | ||
4966 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
4967 | symbol_completer (ignore, tracker, text, word); | |
4968 | } | |
4969 | ||
b16507e0 AB |
4970 | /* Implement the 'info variables' command. */ |
4971 | ||
0b39b52e | 4972 | static void |
12615cba | 4973 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4974 | { |
b16507e0 | 4975 | info_print_options opts; |
4acfdd20 AB |
4976 | auto grp = make_info_print_options_def_group (&opts); |
4977 | gdb::option::process_options | |
4978 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4979 | if (args != nullptr && *args == '\0') | |
4980 | args = nullptr; | |
b16507e0 | 4981 | |
4acfdd20 | 4982 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, VARIABLES_DOMAIN, |
b16507e0 | 4983 | opts.type_regexp, from_tty); |
0b39b52e TT |
4984 | } |
4985 | ||
b16507e0 | 4986 | /* Implement the 'info functions' command. */ |
12615cba | 4987 | |
c906108c | 4988 | static void |
12615cba | 4989 | info_functions_command (const char *args, int from_tty) |
c906108c | 4990 | { |
b16507e0 | 4991 | info_print_options opts; |
4acfdd20 AB |
4992 | auto grp = make_info_print_options_def_group (&opts); |
4993 | gdb::option::process_options | |
4994 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4995 | if (args != nullptr && *args == '\0') | |
4996 | args = nullptr; | |
b16507e0 | 4997 | |
4acfdd20 AB |
4998 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, |
4999 | FUNCTIONS_DOMAIN, opts.type_regexp, from_tty); | |
c906108c SS |
5000 | } |
5001 | ||
a8eab7c6 AB |
5002 | /* Holds the -q option for the 'info types' command. */ |
5003 | ||
5004 | struct info_types_options | |
5005 | { | |
491144b5 | 5006 | bool quiet = false; |
a8eab7c6 AB |
5007 | }; |
5008 | ||
5009 | /* The options used by the 'info types' command. */ | |
5010 | ||
5011 | static const gdb::option::option_def info_types_options_defs[] = { | |
5012 | gdb::option::boolean_option_def<info_types_options> { | |
5013 | "q", | |
5014 | [] (info_types_options *opt) { return &opt->quiet; }, | |
5015 | nullptr, /* show_cmd_cb */ | |
5016 | nullptr /* set_doc */ | |
5017 | } | |
5018 | }; | |
5019 | ||
5020 | /* Returns the option group used by 'info types'. */ | |
5021 | ||
5022 | static gdb::option::option_def_group | |
5023 | make_info_types_options_def_group (info_types_options *opts) | |
5024 | { | |
5025 | return {{info_types_options_defs}, opts}; | |
5026 | } | |
5027 | ||
5028 | /* Implement the 'info types' command. */ | |
357e46e7 | 5029 | |
c906108c | 5030 | static void |
a8eab7c6 | 5031 | info_types_command (const char *args, int from_tty) |
c906108c | 5032 | { |
a8eab7c6 AB |
5033 | info_types_options opts; |
5034 | ||
5035 | auto grp = make_info_types_options_def_group (&opts); | |
5036 | gdb::option::process_options | |
5037 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5038 | if (args != nullptr && *args == '\0') | |
5039 | args = nullptr; | |
4acfdd20 | 5040 | symtab_symbol_info (opts.quiet, false, args, TYPES_DOMAIN, NULL, from_tty); |
a8eab7c6 AB |
5041 | } |
5042 | ||
5043 | /* Command completer for 'info types' command. */ | |
5044 | ||
5045 | static void | |
5046 | info_types_command_completer (struct cmd_list_element *ignore, | |
5047 | completion_tracker &tracker, | |
5048 | const char *text, const char * /* word */) | |
5049 | { | |
5050 | const auto group | |
5051 | = make_info_types_options_def_group (nullptr); | |
5052 | if (gdb::option::complete_options | |
5053 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5054 | return; | |
5055 | ||
5056 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5057 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
5058 | } |
5059 | ||
c378eb4e | 5060 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 5061 | |
8b93c638 | 5062 | void |
fba45db2 | 5063 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
5064 | { |
5065 | rbreak_command (regexp, from_tty); | |
5066 | } | |
8926118c | 5067 | |
c906108c | 5068 | static void |
0b39b52e | 5069 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 5070 | { |
c80049d3 | 5071 | std::string string; |
96142726 TT |
5072 | const char **files = NULL; |
5073 | const char *file_name; | |
8bd10a10 | 5074 | int nfiles = 0; |
c906108c | 5075 | |
8bd10a10 CM |
5076 | if (regexp) |
5077 | { | |
0b39b52e | 5078 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5079 | |
8bd10a10 CM |
5080 | if (colon && *(colon + 1) != ':') |
5081 | { | |
5082 | int colon_index; | |
96142726 | 5083 | char *local_name; |
8bd10a10 CM |
5084 | |
5085 | colon_index = colon - regexp; | |
224c3ddb | 5086 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5087 | memcpy (local_name, regexp, colon_index); |
5088 | local_name[colon_index--] = 0; | |
5089 | while (isspace (local_name[colon_index])) | |
5090 | local_name[colon_index--] = 0; | |
5091 | file_name = local_name; | |
8bd10a10 CM |
5092 | files = &file_name; |
5093 | nfiles = 1; | |
529480d0 | 5094 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5095 | } |
5096 | } | |
5097 | ||
b9c04fb2 TT |
5098 | std::vector<symbol_search> symbols = search_symbols (regexp, |
5099 | FUNCTIONS_DOMAIN, | |
12615cba | 5100 | NULL, |
4acfdd20 AB |
5101 | nfiles, files, |
5102 | false); | |
c906108c | 5103 | |
c80049d3 | 5104 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5105 | for (const symbol_search &p : symbols) |
c906108c | 5106 | { |
b9c04fb2 | 5107 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5108 | { |
b9c04fb2 | 5109 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5110 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5111 | |
c80049d3 TT |
5112 | string = string_printf ("%s:'%s'", fullname, |
5113 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
5114 | break_command (&string[0], from_tty); | |
c7dcbf88 | 5115 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5116 | } |
c906108c | 5117 | else |
c5aa993b | 5118 | { |
c80049d3 TT |
5119 | string = string_printf ("'%s'", |
5120 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 5121 | |
c80049d3 | 5122 | break_command (&string[0], from_tty); |
c5aa993b | 5123 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 5124 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 5125 | } |
c906108c | 5126 | } |
c906108c | 5127 | } |
c906108c | 5128 | \f |
c5aa993b | 5129 | |
c62446b1 | 5130 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5131 | |
5132 | static int | |
c62446b1 | 5133 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5134 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5135 | completion_match_result &match_res) |
5136 | { | |
d4c2a405 | 5137 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5138 | |
b5ec771e | 5139 | symbol_name_matcher_ftype *name_match |
618daa93 | 5140 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 5141 | |
a207cff2 | 5142 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5143 | } |
5144 | ||
b5ec771e | 5145 | /* See symtab.h. */ |
c906108c | 5146 | |
b5ec771e | 5147 | void |
eb3ff9a5 | 5148 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5149 | language symbol_language, |
eb3ff9a5 | 5150 | const char *symname, |
b5ec771e | 5151 | const lookup_name_info &lookup_name, |
0d5cff50 | 5152 | const char *text, const char *word) |
c906108c | 5153 | { |
b5ec771e PA |
5154 | completion_match_result &match_res |
5155 | = tracker.reset_completion_match_result (); | |
5156 | ||
c378eb4e | 5157 | /* Clip symbols that cannot match. */ |
c62446b1 | 5158 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 5159 | return; |
c906108c | 5160 | |
b5ec771e PA |
5161 | /* Refresh SYMNAME from the match string. It's potentially |
5162 | different depending on language. (E.g., on Ada, the match may be | |
5163 | the encoded symbol name wrapped in "<>"). */ | |
5164 | symname = match_res.match.match (); | |
5165 | gdb_assert (symname != NULL); | |
5166 | ||
c906108c | 5167 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5168 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5169 | |
5170 | { | |
60a20c19 PA |
5171 | gdb::unique_xmalloc_ptr<char> completion |
5172 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5173 | |
a207cff2 PA |
5174 | /* Here we pass the match-for-lcd object to add_completion. Some |
5175 | languages match the user text against substrings of symbol | |
5176 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5177 | "std::vector::push_back", "std::string::push_back", etc., and | |
5178 | in this case we want the completion lowest common denominator | |
5179 | to be "push_back" instead of "std::". */ | |
5180 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5181 | &match_res.match_for_lcd, text, word); |
c906108c SS |
5182 | } |
5183 | } | |
5184 | ||
6da67eb1 PA |
5185 | /* completion_list_add_name wrapper for struct symbol. */ |
5186 | ||
5187 | static void | |
eb3ff9a5 PA |
5188 | completion_list_add_symbol (completion_tracker &tracker, |
5189 | symbol *sym, | |
b5ec771e | 5190 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5191 | const char *text, const char *word) |
5192 | { | |
b5ec771e PA |
5193 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5194 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5195 | lookup_name, text, word); |
6da67eb1 PA |
5196 | } |
5197 | ||
5198 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5199 | ||
5200 | static void | |
eb3ff9a5 PA |
5201 | completion_list_add_msymbol (completion_tracker &tracker, |
5202 | minimal_symbol *sym, | |
b5ec771e | 5203 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5204 | const char *text, const char *word) |
5205 | { | |
b5ec771e PA |
5206 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
5207 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5208 | lookup_name, text, word); |
6da67eb1 PA |
5209 | } |
5210 | ||
b5ec771e | 5211 | |
69636828 AF |
5212 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5213 | again and feed all the selectors into the mill. */ | |
5214 | ||
5215 | static void | |
eb3ff9a5 PA |
5216 | completion_list_objc_symbol (completion_tracker &tracker, |
5217 | struct minimal_symbol *msymbol, | |
b5ec771e | 5218 | const lookup_name_info &lookup_name, |
0d5cff50 | 5219 | const char *text, const char *word) |
69636828 AF |
5220 | { |
5221 | static char *tmp = NULL; | |
5222 | static unsigned int tmplen = 0; | |
9af17804 | 5223 | |
0d5cff50 | 5224 | const char *method, *category, *selector; |
69636828 | 5225 | char *tmp2 = NULL; |
9af17804 | 5226 | |
efd66ac6 | 5227 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
5228 | |
5229 | /* Is it a method? */ | |
5230 | if ((method[0] != '-') && (method[0] != '+')) | |
5231 | return; | |
5232 | ||
1b026119 | 5233 | if (text[0] == '[') |
69636828 | 5234 | /* Complete on shortened method method. */ |
b5ec771e PA |
5235 | completion_list_add_name (tracker, language_objc, |
5236 | method + 1, | |
5237 | lookup_name, | |
1b026119 | 5238 | text, word); |
9af17804 | 5239 | |
69636828 AF |
5240 | while ((strlen (method) + 1) >= tmplen) |
5241 | { | |
5242 | if (tmplen == 0) | |
5243 | tmplen = 1024; | |
5244 | else | |
5245 | tmplen *= 2; | |
224c3ddb | 5246 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5247 | } |
5248 | selector = strchr (method, ' '); | |
5249 | if (selector != NULL) | |
5250 | selector++; | |
9af17804 | 5251 | |
69636828 | 5252 | category = strchr (method, '('); |
9af17804 | 5253 | |
69636828 AF |
5254 | if ((category != NULL) && (selector != NULL)) |
5255 | { | |
5256 | memcpy (tmp, method, (category - method)); | |
5257 | tmp[category - method] = ' '; | |
5258 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5259 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5260 | lookup_name, text, word); |
5261 | if (text[0] == '[') | |
b5ec771e | 5262 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5263 | lookup_name, text, word); |
69636828 | 5264 | } |
9af17804 | 5265 | |
69636828 AF |
5266 | if (selector != NULL) |
5267 | { | |
5268 | /* Complete on selector only. */ | |
5269 | strcpy (tmp, selector); | |
5270 | tmp2 = strchr (tmp, ']'); | |
5271 | if (tmp2 != NULL) | |
5272 | *tmp2 = '\0'; | |
9af17804 | 5273 | |
b5ec771e | 5274 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5275 | lookup_name, text, word); |
69636828 AF |
5276 | } |
5277 | } | |
5278 | ||
5279 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5280 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5281 | |
6f937416 PA |
5282 | static const char * |
5283 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5284 | { |
5285 | for (; p > text; --p) | |
5286 | { | |
5287 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5288 | continue; | |
5289 | else | |
5290 | { | |
5291 | if ((current_language->la_language == language_objc)) | |
5292 | { | |
c378eb4e | 5293 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5294 | continue; |
5295 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5296 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5297 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5298 | { /* Might be part of a method name. */ |
6f937416 | 5299 | const char *t = p; |
69636828 AF |
5300 | |
5301 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5302 | that we are in the middle of a method name. However, | |
5303 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5304 | Unfortunately we have to find it now to decide. */ | |
5305 | ||
5306 | while (t > text) | |
5307 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5308 | t[-1] == ' ' || t[-1] == ':' || | |
5309 | t[-1] == '(' || t[-1] == ')') | |
5310 | --t; | |
5311 | else | |
5312 | break; | |
5313 | ||
5314 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5315 | p = t - 2; /* Method name detected. */ |
5316 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5317 | } |
5318 | } | |
5319 | break; | |
5320 | } | |
5321 | } | |
5322 | return p; | |
5323 | } | |
5324 | ||
edb3359d | 5325 | static void |
eb3ff9a5 PA |
5326 | completion_list_add_fields (completion_tracker &tracker, |
5327 | struct symbol *sym, | |
b5ec771e | 5328 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5329 | const char *text, const char *word) |
edb3359d DJ |
5330 | { |
5331 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5332 | { | |
5333 | struct type *t = SYMBOL_TYPE (sym); | |
5334 | enum type_code c = TYPE_CODE (t); | |
5335 | int j; | |
5336 | ||
5337 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5338 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5339 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5340 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5341 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5342 | lookup_name, text, word); |
edb3359d DJ |
5343 | } |
5344 | } | |
5345 | ||
f9d67a22 PA |
5346 | /* See symtab.h. */ |
5347 | ||
5348 | bool | |
5349 | symbol_is_function_or_method (symbol *sym) | |
5350 | { | |
5351 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5352 | { | |
5353 | case TYPE_CODE_FUNC: | |
5354 | case TYPE_CODE_METHOD: | |
5355 | return true; | |
5356 | default: | |
5357 | return false; | |
5358 | } | |
5359 | } | |
5360 | ||
5361 | /* See symtab.h. */ | |
5362 | ||
5363 | bool | |
5364 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5365 | { | |
5366 | switch (MSYMBOL_TYPE (msymbol)) | |
5367 | { | |
5368 | case mst_text: | |
5369 | case mst_text_gnu_ifunc: | |
5370 | case mst_solib_trampoline: | |
5371 | case mst_file_text: | |
5372 | return true; | |
5373 | default: | |
5374 | return false; | |
5375 | } | |
5376 | } | |
5377 | ||
ca31ab1d PA |
5378 | /* See symtab.h. */ |
5379 | ||
5380 | bound_minimal_symbol | |
5381 | find_gnu_ifunc (const symbol *sym) | |
5382 | { | |
5383 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5384 | return {}; | |
5385 | ||
5386 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5387 | symbol_name_match_type::SEARCH_NAME); | |
5388 | struct objfile *objfile = symbol_objfile (sym); | |
5389 | ||
2b1ffcfd | 5390 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5391 | minimal_symbol *ifunc = NULL; |
5392 | ||
5393 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5394 | [&] (minimal_symbol *minsym) | |
5395 | { | |
5396 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5397 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5398 | { |
f50776aa PA |
5399 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5400 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5401 | { | |
5402 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5403 | msym_addr |
5404 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5405 | msym_addr, | |
5406 | current_top_target ()); | |
f50776aa PA |
5407 | } |
5408 | if (msym_addr == address) | |
5409 | { | |
5410 | ifunc = minsym; | |
5411 | return true; | |
5412 | } | |
ca31ab1d PA |
5413 | } |
5414 | return false; | |
5415 | }); | |
5416 | ||
5417 | if (ifunc != NULL) | |
5418 | return {ifunc, objfile}; | |
5419 | return {}; | |
5420 | } | |
5421 | ||
e11c72c7 GB |
5422 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5423 | ||
5424 | static void | |
5425 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5426 | completion_tracker &tracker, |
f9d67a22 | 5427 | complete_symbol_mode mode, |
b5ec771e | 5428 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5429 | const char *text, const char *word, |
5430 | enum type_code code) | |
5431 | { | |
5432 | struct symbol *sym; | |
5433 | const struct block *b; | |
5434 | struct block_iterator iter; | |
5435 | int i; | |
5436 | ||
ff6fa247 GB |
5437 | if (cust == NULL) |
5438 | return; | |
5439 | ||
e11c72c7 GB |
5440 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5441 | { | |
5442 | QUIT; | |
5443 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5444 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5445 | { | |
f9d67a22 PA |
5446 | if (completion_skip_symbol (mode, sym)) |
5447 | continue; | |
5448 | ||
e11c72c7 GB |
5449 | if (code == TYPE_CODE_UNDEF |
5450 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5451 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5452 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5453 | lookup_name, |
e11c72c7 GB |
5454 | text, word); |
5455 | } | |
5456 | } | |
5457 | } | |
5458 | ||
eb3ff9a5 PA |
5459 | void |
5460 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5461 | (completion_tracker &tracker, complete_symbol_mode mode, |
5462 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5463 | const char *text, const char *word, |
5464 | const char *break_on, enum type_code code) | |
c906108c | 5465 | { |
41d27058 JB |
5466 | /* Problem: All of the symbols have to be copied because readline |
5467 | frees them. I'm not going to worry about this; hopefully there | |
5468 | won't be that many. */ | |
5469 | ||
de4f826b | 5470 | struct symbol *sym; |
3977b71f | 5471 | const struct block *b; |
edb3359d | 5472 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5473 | struct block_iterator iter; |
c906108c | 5474 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5475 | const char *sym_text; |
c906108c | 5476 | |
41d27058 | 5477 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5478 | if (mode == complete_symbol_mode::LINESPEC) |
5479 | sym_text = text; | |
5480 | else | |
c906108c | 5481 | { |
6f937416 | 5482 | const char *p; |
c906108c | 5483 | char quote_found; |
6f937416 | 5484 | const char *quote_pos = NULL; |
c906108c SS |
5485 | |
5486 | /* First see if this is a quoted string. */ | |
5487 | quote_found = '\0'; | |
5488 | for (p = text; *p != '\0'; ++p) | |
5489 | { | |
5490 | if (quote_found != '\0') | |
5491 | { | |
5492 | if (*p == quote_found) | |
5493 | /* Found close quote. */ | |
5494 | quote_found = '\0'; | |
5495 | else if (*p == '\\' && p[1] == quote_found) | |
5496 | /* A backslash followed by the quote character | |
c5aa993b | 5497 | doesn't end the string. */ |
c906108c SS |
5498 | ++p; |
5499 | } | |
5500 | else if (*p == '\'' || *p == '"') | |
5501 | { | |
5502 | quote_found = *p; | |
5503 | quote_pos = p; | |
5504 | } | |
5505 | } | |
5506 | if (quote_found == '\'') | |
5507 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5508 | sym_text = quote_pos + 1; | |
5509 | else if (quote_found == '"') | |
5510 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5511 | to complete it any other way. */ |
c94fdfd0 | 5512 | { |
ef0b411a | 5513 | return; |
c94fdfd0 | 5514 | } |
c906108c SS |
5515 | else |
5516 | { | |
5517 | /* It is not a quoted string. Break it based on the characters | |
5518 | which are in symbols. */ | |
5519 | while (p > text) | |
5520 | { | |
95699ff0 | 5521 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5522 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5523 | --p; |
5524 | else | |
5525 | break; | |
5526 | } | |
5527 | sym_text = p; | |
5528 | } | |
5529 | } | |
5530 | ||
1b026119 | 5531 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5532 | |
c906108c SS |
5533 | /* At this point scan through the misc symbol vectors and add each |
5534 | symbol you find to the list. Eventually we want to ignore | |
5535 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5536 | handled by the psymtab code below). */ |
c906108c | 5537 | |
2f68a895 TT |
5538 | if (code == TYPE_CODE_UNDEF) |
5539 | { | |
2030c079 | 5540 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5541 | { |
7932255d | 5542 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5543 | { |
5544 | QUIT; | |
9af17804 | 5545 | |
5325b9bf TT |
5546 | if (completion_skip_symbol (mode, msymbol)) |
5547 | continue; | |
f9d67a22 | 5548 | |
5325b9bf TT |
5549 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5550 | sym_text, word); | |
eb3ff9a5 | 5551 | |
5325b9bf TT |
5552 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5553 | sym_text, word); | |
5554 | } | |
2f68a895 TT |
5555 | } |
5556 | } | |
c906108c | 5557 | |
e11c72c7 | 5558 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5559 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5560 | { |
b669c953 | 5561 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5562 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5563 | sym_text, word, code); | |
5564 | } | |
e11c72c7 | 5565 | |
14bc53a8 PA |
5566 | /* Look through the partial symtabs for all symbols which begin by |
5567 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5568 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5569 | lookup_name, |
5570 | NULL, | |
14bc53a8 PA |
5571 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5572 | { | |
5573 | add_symtab_completions (symtab, | |
f9d67a22 | 5574 | tracker, mode, lookup_name, |
1b026119 | 5575 | sym_text, word, code); |
14bc53a8 PA |
5576 | }, |
5577 | ALL_DOMAIN); | |
e11c72c7 | 5578 | |
c906108c | 5579 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5580 | complete on local vars). Also catch fields of types defined in |
5581 | this places which match our text string. Only complete on types | |
c378eb4e | 5582 | visible from current context. */ |
edb3359d DJ |
5583 | |
5584 | b = get_selected_block (0); | |
5585 | surrounding_static_block = block_static_block (b); | |
5586 | surrounding_global_block = block_global_block (b); | |
5587 | if (surrounding_static_block != NULL) | |
5588 | while (b != surrounding_static_block) | |
5589 | { | |
5590 | QUIT; | |
c906108c | 5591 | |
edb3359d DJ |
5592 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5593 | { | |
2f68a895 TT |
5594 | if (code == TYPE_CODE_UNDEF) |
5595 | { | |
b5ec771e | 5596 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5597 | sym_text, word); |
b5ec771e | 5598 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5599 | sym_text, word); |
2f68a895 TT |
5600 | } |
5601 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5602 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5603 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5604 | sym_text, word); |
edb3359d | 5605 | } |
c5aa993b | 5606 | |
edb3359d DJ |
5607 | /* Stop when we encounter an enclosing function. Do not stop for |
5608 | non-inlined functions - the locals of the enclosing function | |
5609 | are in scope for a nested function. */ | |
5610 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5611 | break; | |
5612 | b = BLOCK_SUPERBLOCK (b); | |
5613 | } | |
c906108c | 5614 | |
edb3359d | 5615 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5616 | |
2f68a895 TT |
5617 | if (code == TYPE_CODE_UNDEF) |
5618 | { | |
5619 | if (surrounding_static_block != NULL) | |
5620 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5621 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5622 | sym_text, word); |
edb3359d | 5623 | |
2f68a895 TT |
5624 | if (surrounding_global_block != NULL) |
5625 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5626 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5627 | sym_text, word); |
2f68a895 | 5628 | } |
c906108c | 5629 | |
2f68a895 TT |
5630 | /* Skip macros if we are completing a struct tag -- arguable but |
5631 | usually what is expected. */ | |
5632 | if (current_language->la_macro_expansion == macro_expansion_c | |
5633 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5634 | { |
f6c2623e | 5635 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5636 | |
14bc53a8 PA |
5637 | /* This adds a macro's name to the current completion list. */ |
5638 | auto add_macro_name = [&] (const char *macro_name, | |
5639 | const macro_definition *, | |
5640 | macro_source_file *, | |
5641 | int) | |
5642 | { | |
1b026119 PA |
5643 | completion_list_add_name (tracker, language_c, macro_name, |
5644 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5645 | }; |
5646 | ||
9a044a89 TT |
5647 | /* Add any macros visible in the default scope. Note that this |
5648 | may yield the occasional wrong result, because an expression | |
5649 | might be evaluated in a scope other than the default. For | |
5650 | example, if the user types "break file:line if <TAB>", the | |
5651 | resulting expression will be evaluated at "file:line" -- but | |
5652 | at there does not seem to be a way to detect this at | |
5653 | completion time. */ | |
5654 | scope = default_macro_scope (); | |
5655 | if (scope) | |
f6c2623e TT |
5656 | macro_for_each_in_scope (scope->file, scope->line, |
5657 | add_macro_name); | |
9a044a89 TT |
5658 | |
5659 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5660 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5661 | } |
ef0b411a GB |
5662 | } |
5663 | ||
eb3ff9a5 PA |
5664 | void |
5665 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5666 | complete_symbol_mode mode, |
b5ec771e | 5667 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5668 | const char *text, const char *word, |
5669 | enum type_code code) | |
f55ee35c | 5670 | { |
c6756f62 | 5671 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5672 | name_match_type, |
eb3ff9a5 PA |
5673 | text, word, "", |
5674 | code); | |
f55ee35c JK |
5675 | } |
5676 | ||
eb3ff9a5 PA |
5677 | /* Collect all symbols (regardless of class) which begin by matching |
5678 | TEXT. */ | |
41d27058 | 5679 | |
eb3ff9a5 PA |
5680 | void |
5681 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5682 | complete_symbol_mode mode, |
b5ec771e | 5683 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5684 | const char *text, const char *word) |
41d27058 | 5685 | { |
c6756f62 | 5686 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5687 | name_match_type, |
eb3ff9a5 PA |
5688 | text, word, |
5689 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5690 | } |
5691 | ||
eb3ff9a5 PA |
5692 | /* Like collect_symbol_completion_matches, but only collect |
5693 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5694 | |
eb3ff9a5 PA |
5695 | void |
5696 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5697 | const char *text, const char *word, | |
5698 | enum type_code code) | |
2f68a895 | 5699 | { |
c6756f62 | 5700 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5701 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5702 | |
2f68a895 TT |
5703 | gdb_assert (code == TYPE_CODE_UNION |
5704 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5705 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5706 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5707 | name_match_type, |
eb3ff9a5 | 5708 | text, word, code); |
41d27058 JB |
5709 | } |
5710 | ||
eb3ff9a5 PA |
5711 | /* Like collect_symbol_completion_matches, but collects a list of |
5712 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5713 | |
eb3ff9a5 PA |
5714 | void |
5715 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5716 | complete_symbol_mode mode, |
b5ec771e | 5717 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5718 | const char *text, const char *word, |
5719 | const char *srcfile) | |
c94fdfd0 | 5720 | { |
c94fdfd0 | 5721 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5722 | const char *sym_text; |
c94fdfd0 EZ |
5723 | |
5724 | /* Now look for the symbol we are supposed to complete on. | |
5725 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5726 | if (mode == complete_symbol_mode::LINESPEC) |
5727 | sym_text = text; | |
5728 | else | |
c94fdfd0 | 5729 | { |
6f937416 | 5730 | const char *p; |
c94fdfd0 | 5731 | char quote_found; |
6f937416 | 5732 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5733 | |
5734 | /* First see if this is a quoted string. */ | |
5735 | quote_found = '\0'; | |
5736 | for (p = text; *p != '\0'; ++p) | |
5737 | { | |
5738 | if (quote_found != '\0') | |
5739 | { | |
5740 | if (*p == quote_found) | |
5741 | /* Found close quote. */ | |
5742 | quote_found = '\0'; | |
5743 | else if (*p == '\\' && p[1] == quote_found) | |
5744 | /* A backslash followed by the quote character | |
5745 | doesn't end the string. */ | |
5746 | ++p; | |
5747 | } | |
5748 | else if (*p == '\'' || *p == '"') | |
5749 | { | |
5750 | quote_found = *p; | |
5751 | quote_pos = p; | |
5752 | } | |
5753 | } | |
5754 | if (quote_found == '\'') | |
5755 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5756 | sym_text = quote_pos + 1; | |
5757 | else if (quote_found == '"') | |
5758 | /* A double-quoted string is never a symbol, nor does it make sense | |
5759 | to complete it any other way. */ | |
5760 | { | |
eb3ff9a5 | 5761 | return; |
c94fdfd0 EZ |
5762 | } |
5763 | else | |
5764 | { | |
69636828 AF |
5765 | /* Not a quoted string. */ |
5766 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5767 | } |
5768 | } | |
5769 | ||
1b026119 | 5770 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5771 | |
8f14146e PA |
5772 | /* Go through symtabs for SRCFILE and check the externs and statics |
5773 | for symbols which match. */ | |
5774 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5775 | { |
8f14146e | 5776 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5777 | tracker, mode, lookup_name, |
1b026119 | 5778 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5779 | return false; |
5780 | }); | |
e27852be DE |
5781 | } |
5782 | ||
c94fdfd0 EZ |
5783 | /* A helper function for make_source_files_completion_list. It adds |
5784 | another file name to a list of possible completions, growing the | |
5785 | list as necessary. */ | |
5786 | ||
5787 | static void | |
6f937416 | 5788 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5789 | completion_list *list) |
c94fdfd0 | 5790 | { |
60a20c19 | 5791 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5792 | } |
5793 | ||
5794 | static int | |
5795 | not_interesting_fname (const char *fname) | |
5796 | { | |
5797 | static const char *illegal_aliens[] = { | |
5798 | "_globals_", /* inserted by coff_symtab_read */ | |
5799 | NULL | |
5800 | }; | |
5801 | int i; | |
5802 | ||
5803 | for (i = 0; illegal_aliens[i]; i++) | |
5804 | { | |
0ba1096a | 5805 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5806 | return 1; |
5807 | } | |
5808 | return 0; | |
5809 | } | |
5810 | ||
ccefe4c4 TT |
5811 | /* An object of this type is passed as the user_data argument to |
5812 | map_partial_symbol_filenames. */ | |
5813 | struct add_partial_filename_data | |
5814 | { | |
9fdc877b | 5815 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5816 | const char *text; |
5817 | const char *word; | |
ccefe4c4 | 5818 | int text_len; |
eb3ff9a5 | 5819 | completion_list *list; |
ccefe4c4 TT |
5820 | }; |
5821 | ||
5822 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5823 | |
ccefe4c4 | 5824 | static void |
2837d59e | 5825 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5826 | void *user_data) |
5827 | { | |
19ba03f4 SM |
5828 | struct add_partial_filename_data *data |
5829 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5830 | |
5831 | if (not_interesting_fname (filename)) | |
5832 | return; | |
bbf2f4df | 5833 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5834 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5835 | { |
5836 | /* This file matches for a completion; add it to the | |
5837 | current list of matches. */ | |
49c4e619 | 5838 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5839 | } |
5840 | else | |
5841 | { | |
5842 | const char *base_name = lbasename (filename); | |
433759f7 | 5843 | |
ccefe4c4 | 5844 | if (base_name != filename |
bbf2f4df | 5845 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5846 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5847 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5848 | } |
5849 | } | |
5850 | ||
eb3ff9a5 | 5851 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5852 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5853 | program. */ |
c94fdfd0 | 5854 | |
eb3ff9a5 | 5855 | completion_list |
6f937416 | 5856 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5857 | { |
c94fdfd0 | 5858 | size_t text_len = strlen (text); |
eb3ff9a5 | 5859 | completion_list list; |
31889e00 | 5860 | const char *base_name; |
ccefe4c4 | 5861 | struct add_partial_filename_data datum; |
c94fdfd0 | 5862 | |
c94fdfd0 EZ |
5863 | if (!have_full_symbols () && !have_partial_symbols ()) |
5864 | return list; | |
5865 | ||
bbf2f4df | 5866 | filename_seen_cache filenames_seen; |
9fdc877b | 5867 | |
2030c079 | 5868 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5869 | { |
b669c953 | 5870 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5871 | { |
8b31193a TT |
5872 | for (symtab *s : compunit_filetabs (cu)) |
5873 | { | |
5874 | if (not_interesting_fname (s->filename)) | |
5875 | continue; | |
5876 | if (!filenames_seen.seen (s->filename) | |
5877 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5878 | { | |
5879 | /* This file matches for a completion; add it to the current | |
5880 | list of matches. */ | |
5881 | add_filename_to_list (s->filename, text, word, &list); | |
5882 | } | |
5883 | else | |
5884 | { | |
5885 | /* NOTE: We allow the user to type a base name when the | |
5886 | debug info records leading directories, but not the other | |
5887 | way around. This is what subroutines of breakpoint | |
5888 | command do when they parse file names. */ | |
5889 | base_name = lbasename (s->filename); | |
5890 | if (base_name != s->filename | |
5891 | && !filenames_seen.seen (base_name) | |
5892 | && filename_ncmp (base_name, text, text_len) == 0) | |
5893 | add_filename_to_list (base_name, text, word, &list); | |
5894 | } | |
5895 | } | |
c94fdfd0 EZ |
5896 | } |
5897 | } | |
5898 | ||
bbf2f4df | 5899 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5900 | datum.text = text; |
5901 | datum.word = word; | |
5902 | datum.text_len = text_len; | |
5903 | datum.list = &list; | |
bb4142cf DE |
5904 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5905 | 0 /*need_fullname*/); | |
9fdc877b | 5906 | |
c94fdfd0 EZ |
5907 | return list; |
5908 | } | |
c906108c | 5909 | \f |
51cc5b07 | 5910 | /* Track MAIN */ |
32ac0d11 TT |
5911 | |
5912 | /* Return the "main_info" object for the current program space. If | |
5913 | the object has not yet been created, create it and fill in some | |
5914 | default values. */ | |
5915 | ||
5916 | static struct main_info * | |
5917 | get_main_info (void) | |
5918 | { | |
a32ad8c5 | 5919 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
5920 | |
5921 | if (info == NULL) | |
5922 | { | |
3d548a53 TT |
5923 | /* It may seem strange to store the main name in the progspace |
5924 | and also in whatever objfile happens to see a main name in | |
5925 | its debug info. The reason for this is mainly historical: | |
5926 | gdb returned "main" as the name even if no function named | |
5927 | "main" was defined the program; and this approach lets us | |
5928 | keep compatibility. */ | |
a32ad8c5 | 5929 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
5930 | } |
5931 | ||
5932 | return info; | |
5933 | } | |
5934 | ||
3d548a53 | 5935 | static void |
9e6c82ad | 5936 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5937 | { |
32ac0d11 TT |
5938 | struct main_info *info = get_main_info (); |
5939 | ||
5940 | if (info->name_of_main != NULL) | |
51cc5b07 | 5941 | { |
32ac0d11 TT |
5942 | xfree (info->name_of_main); |
5943 | info->name_of_main = NULL; | |
5944 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5945 | } |
5946 | if (name != NULL) | |
5947 | { | |
32ac0d11 TT |
5948 | info->name_of_main = xstrdup (name); |
5949 | info->language_of_main = lang; | |
51cc5b07 AC |
5950 | } |
5951 | } | |
5952 | ||
ea53e89f JB |
5953 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5954 | accordingly. */ | |
5955 | ||
5956 | static void | |
5957 | find_main_name (void) | |
5958 | { | |
cd6c7346 | 5959 | const char *new_main_name; |
3d548a53 TT |
5960 | |
5961 | /* First check the objfiles to see whether a debuginfo reader has | |
5962 | picked up the appropriate main name. Historically the main name | |
5963 | was found in a more or less random way; this approach instead | |
5964 | relies on the order of objfile creation -- which still isn't | |
5965 | guaranteed to get the correct answer, but is just probably more | |
5966 | accurate. */ | |
2030c079 | 5967 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5968 | { |
5969 | if (objfile->per_bfd->name_of_main != NULL) | |
5970 | { | |
5971 | set_main_name (objfile->per_bfd->name_of_main, | |
5972 | objfile->per_bfd->language_of_main); | |
5973 | return; | |
5974 | } | |
5975 | } | |
ea53e89f JB |
5976 | |
5977 | /* Try to see if the main procedure is in Ada. */ | |
5978 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5979 | be to add a new method in the language vector, and call this | |
5980 | method for each language until one of them returns a non-empty | |
5981 | name. This would allow us to remove this hard-coded call to | |
5982 | an Ada function. It is not clear that this is a better approach | |
5983 | at this point, because all methods need to be written in a way | |
c378eb4e | 5984 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5985 | important that a method does not return a wrong name for the main |
5986 | procedure if the main procedure is actually written in a different | |
5987 | language. It is easy to guaranty this with Ada, since we use a | |
5988 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5989 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5990 | be guarantied for languages such as C, for instance. This suggests |
5991 | that order of call for these methods becomes important, which means | |
5992 | a more complicated approach. */ | |
5993 | new_main_name = ada_main_name (); | |
5994 | if (new_main_name != NULL) | |
9af17804 | 5995 | { |
9e6c82ad | 5996 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5997 | return; |
5998 | } | |
5999 | ||
63778547 IB |
6000 | new_main_name = d_main_name (); |
6001 | if (new_main_name != NULL) | |
6002 | { | |
6003 | set_main_name (new_main_name, language_d); | |
6004 | return; | |
6005 | } | |
6006 | ||
a766d390 DE |
6007 | new_main_name = go_main_name (); |
6008 | if (new_main_name != NULL) | |
6009 | { | |
9e6c82ad | 6010 | set_main_name (new_main_name, language_go); |
a766d390 DE |
6011 | return; |
6012 | } | |
6013 | ||
cd6c7346 PM |
6014 | new_main_name = pascal_main_name (); |
6015 | if (new_main_name != NULL) | |
9af17804 | 6016 | { |
9e6c82ad | 6017 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
6018 | return; |
6019 | } | |
6020 | ||
ea53e89f JB |
6021 | /* The languages above didn't identify the name of the main procedure. |
6022 | Fallback to "main". */ | |
9e6c82ad | 6023 | set_main_name ("main", language_unknown); |
ea53e89f JB |
6024 | } |
6025 | ||
cd215b2e TT |
6026 | /* See symtab.h. */ |
6027 | ||
6028 | const char * | |
6029 | main_name () | |
51cc5b07 | 6030 | { |
32ac0d11 TT |
6031 | struct main_info *info = get_main_info (); |
6032 | ||
6033 | if (info->name_of_main == NULL) | |
ea53e89f JB |
6034 | find_main_name (); |
6035 | ||
32ac0d11 | 6036 | return info->name_of_main; |
51cc5b07 AC |
6037 | } |
6038 | ||
9e6c82ad TT |
6039 | /* Return the language of the main function. If it is not known, |
6040 | return language_unknown. */ | |
6041 | ||
6042 | enum language | |
6043 | main_language (void) | |
6044 | { | |
32ac0d11 TT |
6045 | struct main_info *info = get_main_info (); |
6046 | ||
6047 | if (info->name_of_main == NULL) | |
6048 | find_main_name (); | |
6049 | ||
6050 | return info->language_of_main; | |
9e6c82ad TT |
6051 | } |
6052 | ||
ea53e89f JB |
6053 | /* Handle ``executable_changed'' events for the symtab module. */ |
6054 | ||
6055 | static void | |
781b42b0 | 6056 | symtab_observer_executable_changed (void) |
ea53e89f JB |
6057 | { |
6058 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 6059 | set_main_name (NULL, language_unknown); |
ea53e89f | 6060 | } |
51cc5b07 | 6061 | |
a6c727b2 DJ |
6062 | /* Return 1 if the supplied producer string matches the ARM RealView |
6063 | compiler (armcc). */ | |
6064 | ||
6065 | int | |
6066 | producer_is_realview (const char *producer) | |
6067 | { | |
6068 | static const char *const arm_idents[] = { | |
6069 | "ARM C Compiler, ADS", | |
6070 | "Thumb C Compiler, ADS", | |
6071 | "ARM C++ Compiler, ADS", | |
6072 | "Thumb C++ Compiler, ADS", | |
6073 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6074 | "ARM C/C++ Compiler, RVCT" | |
6075 | }; | |
6076 | int i; | |
6077 | ||
6078 | if (producer == NULL) | |
6079 | return 0; | |
6080 | ||
6081 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6082 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
6083 | return 1; |
6084 | ||
6085 | return 0; | |
6086 | } | |
ed0616c6 | 6087 | |
f1e6e072 TT |
6088 | \f |
6089 | ||
6090 | /* The next index to hand out in response to a registration request. */ | |
6091 | ||
6092 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6093 | ||
6094 | /* The maximum number of "aclass" registrations we support. This is | |
6095 | constant for convenience. */ | |
6096 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6097 | ||
6098 | /* The objects representing the various "aclass" values. The elements | |
6099 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6100 | elements are those registered at gdb initialization time. */ | |
6101 | ||
6102 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6103 | ||
6104 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6105 | so that it can be const. */ | |
6106 | ||
6107 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6108 | ||
6109 | /* Make sure we saved enough room in struct symbol. */ | |
6110 | ||
6111 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6112 | ||
6113 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6114 | is the ops vector associated with this index. This returns the new | |
6115 | index, which should be used as the aclass_index field for symbols | |
6116 | of this type. */ | |
6117 | ||
6118 | int | |
6119 | register_symbol_computed_impl (enum address_class aclass, | |
6120 | const struct symbol_computed_ops *ops) | |
6121 | { | |
6122 | int result = next_aclass_value++; | |
6123 | ||
6124 | gdb_assert (aclass == LOC_COMPUTED); | |
6125 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6126 | symbol_impl[result].aclass = aclass; | |
6127 | symbol_impl[result].ops_computed = ops; | |
6128 | ||
24d6c2a0 TT |
6129 | /* Sanity check OPS. */ |
6130 | gdb_assert (ops != NULL); | |
6131 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6132 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6133 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6134 | gdb_assert (ops->read_variable != NULL); |
6135 | ||
f1e6e072 TT |
6136 | return result; |
6137 | } | |
6138 | ||
6139 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6140 | OPS is the ops vector associated with this index. This returns the | |
6141 | new index, which should be used as the aclass_index field for symbols | |
6142 | of this type. */ | |
6143 | ||
6144 | int | |
6145 | register_symbol_block_impl (enum address_class aclass, | |
6146 | const struct symbol_block_ops *ops) | |
6147 | { | |
6148 | int result = next_aclass_value++; | |
6149 | ||
6150 | gdb_assert (aclass == LOC_BLOCK); | |
6151 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6152 | symbol_impl[result].aclass = aclass; | |
6153 | symbol_impl[result].ops_block = ops; | |
6154 | ||
6155 | /* Sanity check OPS. */ | |
6156 | gdb_assert (ops != NULL); | |
6157 | gdb_assert (ops->find_frame_base_location != NULL); | |
6158 | ||
6159 | return result; | |
6160 | } | |
6161 | ||
6162 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6163 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6164 | this index. This returns the new index, which should be used as | |
6165 | the aclass_index field for symbols of this type. */ | |
6166 | ||
6167 | int | |
6168 | register_symbol_register_impl (enum address_class aclass, | |
6169 | const struct symbol_register_ops *ops) | |
6170 | { | |
6171 | int result = next_aclass_value++; | |
6172 | ||
6173 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6174 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6175 | symbol_impl[result].aclass = aclass; | |
6176 | symbol_impl[result].ops_register = ops; | |
6177 | ||
6178 | return result; | |
6179 | } | |
6180 | ||
6181 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6182 | address_class. */ | |
6183 | ||
6184 | static void | |
6185 | initialize_ordinary_address_classes (void) | |
6186 | { | |
6187 | int i; | |
6188 | ||
6189 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6190 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6191 | } |
6192 | ||
6193 | \f | |
6194 | ||
1994afbf DE |
6195 | /* Helper function to initialize the fields of an objfile-owned symbol. |
6196 | It assumed that *SYM is already all zeroes. */ | |
6197 | ||
6198 | static void | |
6199 | initialize_objfile_symbol_1 (struct symbol *sym) | |
6200 | { | |
6201 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
6202 | SYMBOL_SECTION (sym) = -1; | |
6203 | } | |
6204 | ||
6205 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
6206 | |
6207 | void | |
38bf1463 | 6208 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
6209 | { |
6210 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 6211 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
6212 | } |
6213 | ||
6214 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6215 | obstack. */ | |
6216 | ||
6217 | struct symbol * | |
6218 | allocate_symbol (struct objfile *objfile) | |
6219 | { | |
6220 | struct symbol *result; | |
6221 | ||
6222 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 6223 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6224 | |
6225 | return result; | |
6226 | } | |
6227 | ||
6228 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6229 | obstack. */ | |
6230 | ||
6231 | struct template_symbol * | |
6232 | allocate_template_symbol (struct objfile *objfile) | |
6233 | { | |
6234 | struct template_symbol *result; | |
6235 | ||
6236 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 6237 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6238 | |
6239 | return result; | |
6240 | } | |
6241 | ||
08be3fe3 DE |
6242 | /* See symtab.h. */ |
6243 | ||
6244 | struct objfile * | |
6245 | symbol_objfile (const struct symbol *symbol) | |
6246 | { | |
1994afbf DE |
6247 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6248 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6249 | } |
6250 | ||
6251 | /* See symtab.h. */ | |
6252 | ||
6253 | struct gdbarch * | |
6254 | symbol_arch (const struct symbol *symbol) | |
6255 | { | |
1994afbf DE |
6256 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6257 | return symbol->owner.arch; | |
6258 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6259 | } |
6260 | ||
6261 | /* See symtab.h. */ | |
6262 | ||
6263 | struct symtab * | |
6264 | symbol_symtab (const struct symbol *symbol) | |
6265 | { | |
1994afbf DE |
6266 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6267 | return symbol->owner.symtab; | |
08be3fe3 DE |
6268 | } |
6269 | ||
6270 | /* See symtab.h. */ | |
6271 | ||
6272 | void | |
6273 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6274 | { | |
1994afbf DE |
6275 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6276 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6277 | } |
6278 | ||
e623cf5d TT |
6279 | \f |
6280 | ||
c906108c | 6281 | void |
fba45db2 | 6282 | _initialize_symtab (void) |
c906108c | 6283 | { |
60cfcb20 AB |
6284 | cmd_list_element *c; |
6285 | ||
f1e6e072 TT |
6286 | initialize_ordinary_address_classes (); |
6287 | ||
60cfcb20 AB |
6288 | c = add_info ("variables", info_variables_command, |
6289 | info_print_args_help (_("\ | |
12615cba | 6290 | All global and static variable names or those matching REGEXPs.\n\ |
4acfdd20 | 6291 | Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6292 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6293 | _("global and static variables"), |
6294 | true)); | |
60cfcb20 | 6295 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6296 | if (dbx_commands) |
60cfcb20 AB |
6297 | { |
6298 | c = add_com ("whereis", class_info, info_variables_command, | |
6299 | info_print_args_help (_("\ | |
12615cba | 6300 | All global and static variable names, or those matching REGEXPs.\n\ |
4acfdd20 | 6301 | Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6302 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6303 | _("global and static variables"), |
6304 | true)); | |
60cfcb20 AB |
6305 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
6306 | } | |
c906108c | 6307 | |
60cfcb20 AB |
6308 | c = add_info ("functions", info_functions_command, |
6309 | info_print_args_help (_("\ | |
12615cba | 6310 | All function names or those matching REGEXPs.\n\ |
4acfdd20 | 6311 | Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6312 | Prints the functions.\n"), |
4acfdd20 AB |
6313 | _("functions"), |
6314 | true)); | |
60cfcb20 | 6315 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6316 | |
a8eab7c6 AB |
6317 | c = add_info ("types", info_types_command, _("\ |
6318 | All type names, or those matching REGEXP.\n\ | |
6319 | Usage: info types [-q] [REGEXP]\n\ | |
6320 | Print information about all types matching REGEXP, or all types if no\n\ | |
6321 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6322 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6323 | |
28cd9371 PW |
6324 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6325 | ||
6326 | static std::string info_sources_help | |
6327 | = gdb::option::build_help (_("\ | |
6328 | All source files in the program or those matching REGEXP.\n\ | |
6329 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6330 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6331 | \n\ | |
6332 | Options:\n\ | |
6333 | %OPTIONS%"), | |
6334 | info_sources_opts); | |
6335 | ||
6336 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6337 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c SS |
6338 | |
6339 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6340 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6341 | |
717d2f5a JB |
6342 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6343 | multiple_symbols_modes, &multiple_symbols_mode, | |
6344 | _("\ | |
590042fc | 6345 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6346 | Show how the debugger handles ambiguities in expressions."), _("\ |
6347 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6348 | NULL, NULL, &setlist, &showlist); | |
6349 | ||
c011a4f4 DE |
6350 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6351 | &basenames_may_differ, _("\ | |
6352 | Set whether a source file may have multiple base names."), _("\ | |
6353 | Show whether a source file may have multiple base names."), _("\ | |
6354 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6355 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6356 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6357 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6358 | but it allows the same file be known by more than one base name.\n\ | |
6359 | If not set (the default), all source files are assumed to have just\n\ | |
6360 | one base name, and gdb will do file name comparisons more efficiently."), | |
6361 | NULL, NULL, | |
6362 | &setlist, &showlist); | |
6363 | ||
db0fec5c DE |
6364 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6365 | _("Set debugging of symbol table creation."), | |
6366 | _("Show debugging of symbol table creation."), _("\ | |
6367 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6368 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6369 | A value greater than 1 provides more verbose information."), | |
6370 | NULL, | |
6371 | NULL, | |
6372 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6373 | |
cc485e62 DE |
6374 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6375 | _("\ | |
6376 | Set debugging of symbol lookup."), _("\ | |
6377 | Show debugging of symbol lookup."), _("\ | |
6378 | When enabled (non-zero), symbol lookups are logged."), | |
6379 | NULL, NULL, | |
6380 | &setdebuglist, &showdebuglist); | |
6381 | ||
f57d2163 DE |
6382 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6383 | &new_symbol_cache_size, | |
6384 | _("Set the size of the symbol cache."), | |
6385 | _("Show the size of the symbol cache."), _("\ | |
6386 | The size of the symbol cache.\n\ | |
6387 | If zero then the symbol cache is disabled."), | |
6388 | set_symbol_cache_size_handler, NULL, | |
6389 | &maintenance_set_cmdlist, | |
6390 | &maintenance_show_cmdlist); | |
6391 | ||
6392 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6393 | _("Dump the symbol cache for each program space."), | |
6394 | &maintenanceprintlist); | |
6395 | ||
6396 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6397 | maintenance_print_symbol_cache_statistics, | |
6398 | _("Print symbol cache statistics for each program space."), | |
6399 | &maintenanceprintlist); | |
6400 | ||
6401 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6402 | maintenance_flush_symbol_cache, | |
6403 | _("Flush the symbol cache for each program space."), | |
6404 | &maintenancelist); | |
6405 | ||
76727919 TT |
6406 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6407 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6408 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6409 | } |