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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
88987551 | 30 | #include "gdb_regex.h" |
c906108c SS |
31 | #include "expression.h" |
32 | #include "language.h" | |
33 | #include "demangle.h" | |
34 | #include "inferior.h" | |
0378c332 | 35 | #include "source.h" |
a7fdf62f | 36 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 37 | #include "objc-lang.h" |
6aecb9c2 | 38 | #include "d-lang.h" |
1f8173e6 | 39 | #include "ada-lang.h" |
a766d390 | 40 | #include "go-lang.h" |
cd6c7346 | 41 | #include "p-lang.h" |
ff013f42 | 42 | #include "addrmap.h" |
529480d0 | 43 | #include "cli/cli-utils.h" |
1ed9f74e | 44 | #include "cli/cli-style.h" |
cce0e923 | 45 | #include "fnmatch.h" |
2de7ced7 | 46 | #include "hashtab.h" |
12615cba | 47 | #include "typeprint.h" |
2de7ced7 | 48 | |
04ea0df1 | 49 | #include "gdb_obstack.h" |
fe898f56 | 50 | #include "block.h" |
de4f826b | 51 | #include "dictionary.h" |
c906108c SS |
52 | |
53 | #include <sys/types.h> | |
54 | #include <fcntl.h> | |
53ce3c39 | 55 | #include <sys/stat.h> |
c906108c | 56 | #include <ctype.h> |
015a42b4 | 57 | #include "cp-abi.h" |
71c25dea | 58 | #include "cp-support.h" |
76727919 | 59 | #include "observable.h" |
3a40aaa0 | 60 | #include "solist.h" |
9a044a89 TT |
61 | #include "macrotab.h" |
62 | #include "macroscope.h" | |
c906108c | 63 | |
270140bd | 64 | #include "parser-defs.h" |
ef0b411a | 65 | #include "completer.h" |
5ed8105e | 66 | #include "progspace-and-thread.h" |
268a13a5 | 67 | #include "gdbsupport/gdb_optional.h" |
bbf2f4df | 68 | #include "filename-seen-cache.h" |
46a62268 | 69 | #include "arch-utils.h" |
b9c04fb2 | 70 | #include <algorithm> |
7bb43059 | 71 | #include "gdbsupport/gdb_string_view.h" |
268a13a5 | 72 | #include "gdbsupport/pathstuff.h" |
1a6ff1a9 | 73 | #include "gdbsupport/common-utils.h" |
ccefe4c4 | 74 | |
ff6c39cf | 75 | /* Forward declarations for local functions. */ |
c906108c | 76 | |
0b39b52e | 77 | static void rbreak_command (const char *, int); |
c906108c | 78 | |
f8eba3c6 | 79 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 80 | |
d12307c1 PMR |
81 | static struct block_symbol |
82 | lookup_symbol_aux (const char *name, | |
de63c46b | 83 | symbol_name_match_type match_type, |
d12307c1 PMR |
84 | const struct block *block, |
85 | const domain_enum domain, | |
86 | enum language language, | |
87 | struct field_of_this_result *); | |
fba7f19c | 88 | |
e4051eeb | 89 | static |
d12307c1 | 90 | struct block_symbol lookup_local_symbol (const char *name, |
de63c46b | 91 | symbol_name_match_type match_type, |
d12307c1 PMR |
92 | const struct block *block, |
93 | const domain_enum domain, | |
94 | enum language language); | |
8155455b | 95 | |
d12307c1 | 96 | static struct block_symbol |
c32e6a04 CB |
97 | lookup_symbol_in_objfile (struct objfile *objfile, |
98 | enum block_enum block_index, | |
fe2a438d | 99 | const char *name, const domain_enum domain); |
c906108c | 100 | |
32ac0d11 TT |
101 | /* Type of the data stored on the program space. */ |
102 | ||
103 | struct main_info | |
104 | { | |
a32ad8c5 TT |
105 | main_info () = default; |
106 | ||
107 | ~main_info () | |
108 | { | |
109 | xfree (name_of_main); | |
110 | } | |
111 | ||
32ac0d11 TT |
112 | /* Name of "main". */ |
113 | ||
a32ad8c5 | 114 | char *name_of_main = nullptr; |
32ac0d11 TT |
115 | |
116 | /* Language of "main". */ | |
117 | ||
a32ad8c5 | 118 | enum language language_of_main = language_unknown; |
32ac0d11 TT |
119 | }; |
120 | ||
a32ad8c5 TT |
121 | /* Program space key for finding name and language of "main". */ |
122 | ||
123 | static const program_space_key<main_info> main_progspace_key; | |
124 | ||
f57d2163 DE |
125 | /* The default symbol cache size. |
126 | There is no extra cpu cost for large N (except when flushing the cache, | |
127 | which is rare). The value here is just a first attempt. A better default | |
128 | value may be higher or lower. A prime number can make up for a bad hash | |
129 | computation, so that's why the number is what it is. */ | |
130 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
131 | ||
132 | /* The maximum symbol cache size. | |
133 | There's no method to the decision of what value to use here, other than | |
134 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
135 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
136 | ||
137 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
138 | symbol in any objfile. */ | |
d12307c1 PMR |
139 | #define SYMBOL_LOOKUP_FAILED \ |
140 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
141 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
142 | |
143 | /* Recording lookups that don't find the symbol is just as important, if not | |
144 | more so, than recording found symbols. */ | |
145 | ||
146 | enum symbol_cache_slot_state | |
147 | { | |
148 | SYMBOL_SLOT_UNUSED, | |
149 | SYMBOL_SLOT_NOT_FOUND, | |
150 | SYMBOL_SLOT_FOUND | |
151 | }; | |
152 | ||
52059ffd TT |
153 | struct symbol_cache_slot |
154 | { | |
155 | enum symbol_cache_slot_state state; | |
156 | ||
157 | /* The objfile that was current when the symbol was looked up. | |
158 | This is only needed for global blocks, but for simplicity's sake | |
159 | we allocate the space for both. If data shows the extra space used | |
160 | for static blocks is a problem, we can split things up then. | |
161 | ||
162 | Global blocks need cache lookup to include the objfile context because | |
163 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
164 | which can traverse objfiles in, effectively, any order, depending on | |
165 | the current objfile, thus affecting which symbol is found. Normally, | |
166 | only the current objfile is searched first, and then the rest are | |
167 | searched in recorded order; but putting cache lookup inside | |
168 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
169 | Instead we just make the current objfile part of the context of | |
170 | cache lookup. This means we can record the same symbol multiple times, | |
171 | each with a different "current objfile" that was in effect when the | |
172 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
173 | const struct objfile *objfile_context; | |
174 | ||
175 | union | |
176 | { | |
d12307c1 | 177 | struct block_symbol found; |
52059ffd TT |
178 | struct |
179 | { | |
180 | char *name; | |
181 | domain_enum domain; | |
182 | } not_found; | |
183 | } value; | |
184 | }; | |
185 | ||
f57d2163 DE |
186 | /* Symbols don't specify global vs static block. |
187 | So keep them in separate caches. */ | |
188 | ||
189 | struct block_symbol_cache | |
190 | { | |
191 | unsigned int hits; | |
192 | unsigned int misses; | |
193 | unsigned int collisions; | |
194 | ||
195 | /* SYMBOLS is a variable length array of this size. | |
196 | One can imagine that in general one cache (global/static) should be a | |
197 | fraction of the size of the other, but there's no data at the moment | |
198 | on which to decide. */ | |
199 | unsigned int size; | |
200 | ||
52059ffd | 201 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
202 | }; |
203 | ||
204 | /* The symbol cache. | |
205 | ||
206 | Searching for symbols in the static and global blocks over multiple objfiles | |
207 | again and again can be slow, as can searching very big objfiles. This is a | |
208 | simple cache to improve symbol lookup performance, which is critical to | |
209 | overall gdb performance. | |
210 | ||
211 | Symbols are hashed on the name, its domain, and block. | |
212 | They are also hashed on their objfile for objfile-specific lookups. */ | |
213 | ||
214 | struct symbol_cache | |
215 | { | |
3017b94d TT |
216 | symbol_cache () = default; |
217 | ||
218 | ~symbol_cache () | |
219 | { | |
220 | xfree (global_symbols); | |
221 | xfree (static_symbols); | |
222 | } | |
223 | ||
224 | struct block_symbol_cache *global_symbols = nullptr; | |
225 | struct block_symbol_cache *static_symbols = nullptr; | |
f57d2163 DE |
226 | }; |
227 | ||
3017b94d TT |
228 | /* Program space key for finding its symbol cache. */ |
229 | ||
230 | static const program_space_key<symbol_cache> symbol_cache_key; | |
231 | ||
45cfd468 | 232 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 233 | unsigned int symtab_create_debug = 0; |
45cfd468 | 234 | |
cc485e62 DE |
235 | /* When non-zero, print debugging messages related to symbol lookup. */ |
236 | unsigned int symbol_lookup_debug = 0; | |
237 | ||
f57d2163 DE |
238 | /* The size of the cache is staged here. */ |
239 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
240 | ||
241 | /* The current value of the symbol cache size. | |
242 | This is saved so that if the user enters a value too big we can restore | |
243 | the original value from here. */ | |
244 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
245 | ||
491144b5 | 246 | /* True if a file may be known by two different basenames. |
c011a4f4 DE |
247 | This is the uncommon case, and significantly slows down gdb. |
248 | Default set to "off" to not slow down the common case. */ | |
491144b5 | 249 | bool basenames_may_differ = false; |
c011a4f4 | 250 | |
717d2f5a JB |
251 | /* Allow the user to configure the debugger behavior with respect |
252 | to multiple-choice menus when more than one symbol matches during | |
253 | a symbol lookup. */ | |
254 | ||
7fc830e2 MK |
255 | const char multiple_symbols_ask[] = "ask"; |
256 | const char multiple_symbols_all[] = "all"; | |
257 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 258 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
259 | { |
260 | multiple_symbols_ask, | |
261 | multiple_symbols_all, | |
262 | multiple_symbols_cancel, | |
263 | NULL | |
264 | }; | |
265 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
266 | ||
267 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
268 | ||
269 | const char * | |
270 | multiple_symbols_select_mode (void) | |
271 | { | |
272 | return multiple_symbols_mode; | |
273 | } | |
274 | ||
20c681d1 DE |
275 | /* Return the name of a domain_enum. */ |
276 | ||
277 | const char * | |
278 | domain_name (domain_enum e) | |
279 | { | |
280 | switch (e) | |
281 | { | |
282 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
283 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
284 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 285 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
286 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
287 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
288 | default: gdb_assert_not_reached ("bad domain_enum"); | |
289 | } | |
290 | } | |
291 | ||
292 | /* Return the name of a search_domain . */ | |
293 | ||
294 | const char * | |
295 | search_domain_name (enum search_domain e) | |
296 | { | |
297 | switch (e) | |
298 | { | |
299 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
300 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
301 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
302 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
303 | default: gdb_assert_not_reached ("bad search_domain"); | |
304 | } | |
305 | } | |
306 | ||
43f3e411 | 307 | /* See symtab.h. */ |
db0fec5c | 308 | |
43f3e411 DE |
309 | struct symtab * |
310 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 311 | { |
43f3e411 | 312 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 313 | |
43f3e411 DE |
314 | /* The primary file symtab is the first one in the list. */ |
315 | return COMPUNIT_FILETABS (cust); | |
316 | } | |
317 | ||
318 | /* See symtab.h. */ | |
319 | ||
320 | enum language | |
321 | compunit_language (const struct compunit_symtab *cust) | |
322 | { | |
323 | struct symtab *symtab = compunit_primary_filetab (cust); | |
324 | ||
325 | /* The language of the compunit symtab is the language of its primary | |
326 | source file. */ | |
327 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
328 | } |
329 | ||
1ed9f74e PW |
330 | /* See symtab.h. */ |
331 | ||
332 | bool | |
333 | minimal_symbol::data_p () const | |
334 | { | |
335 | return type == mst_data | |
336 | || type == mst_bss | |
337 | || type == mst_abs | |
338 | || type == mst_file_data | |
339 | || type == mst_file_bss; | |
340 | } | |
341 | ||
342 | /* See symtab.h. */ | |
343 | ||
344 | bool | |
345 | minimal_symbol::text_p () const | |
346 | { | |
347 | return type == mst_text | |
348 | || type == mst_text_gnu_ifunc | |
349 | || type == mst_data_gnu_ifunc | |
350 | || type == mst_slot_got_plt | |
351 | || type == mst_solib_trampoline | |
352 | || type == mst_file_text; | |
353 | } | |
354 | ||
4aac40c8 TT |
355 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
356 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
357 | describes what we advertise). Returns true if they match, false |
358 | otherwise. */ | |
4aac40c8 | 359 | |
ececd218 | 360 | bool |
b57a636e | 361 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
362 | { |
363 | int len = strlen (filename); | |
b57a636e | 364 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
365 | |
366 | if (len < search_len) | |
ececd218 | 367 | return false; |
4aac40c8 TT |
368 | |
369 | /* The tail of FILENAME must match. */ | |
370 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
ececd218 | 371 | return false; |
4aac40c8 TT |
372 | |
373 | /* Either the names must completely match, or the character | |
374 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
375 | directory separator. |
376 | ||
af529f8f JK |
377 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
378 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
379 | absolute path. The sama applies for "c:\file.c" possibly | |
380 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
381 | ||
d84fca2c JK |
382 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
383 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
384 | to put the "c:file.c" name into debug info. Such compatibility | |
385 | works only on GDB built for DOS host. */ | |
4aac40c8 | 386 | return (len == search_len |
af529f8f JK |
387 | || (!IS_ABSOLUTE_PATH (search_name) |
388 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
389 | || (HAS_DRIVE_SPEC (filename) |
390 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
391 | } | |
392 | ||
cce0e923 DE |
393 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
394 | Heads up on the order of the arguments. They match the order of | |
395 | compare_filenames_for_search, but it's the opposite of the order of | |
396 | arguments to gdb_filename_fnmatch. */ | |
397 | ||
ececd218 | 398 | bool |
cce0e923 DE |
399 | compare_glob_filenames_for_search (const char *filename, |
400 | const char *search_name) | |
401 | { | |
402 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
403 | all /s have to be explicitly specified. */ | |
404 | int file_path_elements = count_path_elements (filename); | |
405 | int search_path_elements = count_path_elements (search_name); | |
406 | ||
407 | if (search_path_elements > file_path_elements) | |
ececd218 | 408 | return false; |
cce0e923 DE |
409 | |
410 | if (IS_ABSOLUTE_PATH (search_name)) | |
411 | { | |
412 | return (search_path_elements == file_path_elements | |
413 | && gdb_filename_fnmatch (search_name, filename, | |
414 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
415 | } | |
416 | ||
417 | { | |
418 | const char *file_to_compare | |
419 | = strip_leading_path_elements (filename, | |
420 | file_path_elements - search_path_elements); | |
421 | ||
422 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
423 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
424 | } | |
425 | } | |
426 | ||
f8eba3c6 TT |
427 | /* Check for a symtab of a specific name by searching some symtabs. |
428 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 429 | |
b2d23133 DE |
430 | If NAME is not absolute, then REAL_PATH is NULL |
431 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
432 | ||
14bc53a8 PA |
433 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
434 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 435 | |
43f3e411 DE |
436 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
437 | Each symtab within the specified compunit symtab is also searched. | |
438 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
439 | search until the end of the list. */ |
440 | ||
14bc53a8 | 441 | bool |
f8eba3c6 | 442 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 443 | const char *real_path, |
43f3e411 | 444 | struct compunit_symtab *first, |
14bc53a8 PA |
445 | struct compunit_symtab *after_last, |
446 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 447 | { |
43f3e411 | 448 | struct compunit_symtab *cust; |
c011a4f4 | 449 | const char* base_name = lbasename (name); |
1f84b619 | 450 | |
43f3e411 | 451 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 452 | { |
5accd1a0 | 453 | for (symtab *s : compunit_filetabs (cust)) |
a94e8645 | 454 | { |
43f3e411 DE |
455 | if (compare_filenames_for_search (s->filename, name)) |
456 | { | |
14bc53a8 PA |
457 | if (callback (s)) |
458 | return true; | |
43f3e411 DE |
459 | continue; |
460 | } | |
a94e8645 | 461 | |
43f3e411 DE |
462 | /* Before we invoke realpath, which can get expensive when many |
463 | files are involved, do a quick comparison of the basenames. */ | |
464 | if (! basenames_may_differ | |
465 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
466 | continue; | |
a94e8645 | 467 | |
43f3e411 | 468 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 469 | { |
14bc53a8 PA |
470 | if (callback (s)) |
471 | return true; | |
a94e8645 DE |
472 | continue; |
473 | } | |
43f3e411 DE |
474 | |
475 | /* If the user gave us an absolute path, try to find the file in | |
476 | this symtab and use its absolute path. */ | |
477 | if (real_path != NULL) | |
478 | { | |
479 | const char *fullname = symtab_to_fullname (s); | |
480 | ||
481 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
482 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7e785608 TV |
483 | gdb::unique_xmalloc_ptr<char> fullname_real_path |
484 | = gdb_realpath (fullname); | |
485 | fullname = fullname_real_path.get (); | |
43f3e411 DE |
486 | if (FILENAME_CMP (real_path, fullname) == 0) |
487 | { | |
14bc53a8 PA |
488 | if (callback (s)) |
489 | return true; | |
43f3e411 DE |
490 | continue; |
491 | } | |
492 | } | |
a94e8645 | 493 | } |
f8eba3c6 | 494 | } |
58d370e0 | 495 | |
14bc53a8 | 496 | return false; |
f8eba3c6 TT |
497 | } |
498 | ||
499 | /* Check for a symtab of a specific name; first in symtabs, then in | |
500 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
501 | in the symtab filename will also work. | |
502 | ||
14bc53a8 PA |
503 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
504 | true, the search stops. */ | |
f8eba3c6 TT |
505 | |
506 | void | |
507 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 508 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 509 | { |
14bc53a8 | 510 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
511 | |
512 | /* Here we are interested in canonicalizing an absolute path, not | |
513 | absolutizing a relative path. */ | |
514 | if (IS_ABSOLUTE_PATH (name)) | |
515 | { | |
14278e1f | 516 | real_path = gdb_realpath (name); |
14bc53a8 | 517 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
518 | } |
519 | ||
2030c079 | 520 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
521 | { |
522 | if (iterate_over_some_symtabs (name, real_path.get (), | |
523 | objfile->compunit_symtabs, NULL, | |
524 | callback)) | |
f8eba3c6 | 525 | return; |
14bc53a8 | 526 | } |
f8eba3c6 | 527 | |
c906108c SS |
528 | /* Same search rules as above apply here, but now we look thru the |
529 | psymtabs. */ | |
530 | ||
2030c079 | 531 | for (objfile *objfile : current_program_space->objfiles ()) |
14bc53a8 PA |
532 | { |
533 | if (objfile->sf | |
534 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
535 | name, | |
536 | real_path.get (), | |
537 | callback)) | |
f8eba3c6 | 538 | return; |
14bc53a8 | 539 | } |
c906108c | 540 | } |
f8eba3c6 TT |
541 | |
542 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
543 | symtab, or NULL. */ | |
544 | ||
545 | struct symtab * | |
546 | lookup_symtab (const char *name) | |
547 | { | |
548 | struct symtab *result = NULL; | |
549 | ||
14bc53a8 PA |
550 | iterate_over_symtabs (name, [&] (symtab *symtab) |
551 | { | |
552 | result = symtab; | |
553 | return true; | |
554 | }); | |
555 | ||
f8eba3c6 TT |
556 | return result; |
557 | } | |
558 | ||
c906108c SS |
559 | \f |
560 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
561 | full method name, which consist of the class name (from T), the unadorned | |
562 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 563 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
564 | |
565 | char * | |
fba45db2 | 566 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
567 | { |
568 | int mangled_name_len; | |
569 | char *mangled_name; | |
570 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
571 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 572 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 573 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
a737d952 | 574 | const char *newname = TYPE_NAME (type); |
c906108c SS |
575 | |
576 | /* Does the form of physname indicate that it is the full mangled name | |
577 | of a constructor (not just the args)? */ | |
578 | int is_full_physname_constructor; | |
579 | ||
580 | int is_constructor; | |
015a42b4 | 581 | int is_destructor = is_destructor_name (physname); |
c906108c | 582 | /* Need a new type prefix. */ |
e6a959d6 PA |
583 | const char *const_prefix = method->is_const ? "C" : ""; |
584 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
585 | char buf[20]; |
586 | int len = (newname == NULL ? 0 : strlen (newname)); | |
587 | ||
43630227 PS |
588 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
589 | or an operator name. */ | |
590 | if ((physname[0] == '_' && physname[1] == 'Z') | |
591 | || is_operator_name (field_name)) | |
235d1e03 EZ |
592 | return xstrdup (physname); |
593 | ||
015a42b4 | 594 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 595 | |
3e43a32a MS |
596 | is_constructor = is_full_physname_constructor |
597 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
598 | |
599 | if (!is_destructor) | |
61012eef | 600 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
601 | |
602 | if (is_destructor || is_full_physname_constructor) | |
603 | { | |
c5aa993b JM |
604 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
605 | strcpy (mangled_name, physname); | |
c906108c SS |
606 | return mangled_name; |
607 | } | |
608 | ||
609 | if (len == 0) | |
610 | { | |
8c042590 | 611 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
612 | } |
613 | else if (physname[0] == 't' || physname[0] == 'Q') | |
614 | { | |
615 | /* The physname for template and qualified methods already includes | |
c5aa993b | 616 | the class name. */ |
8c042590 | 617 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
618 | newname = NULL; |
619 | len = 0; | |
620 | } | |
621 | else | |
622 | { | |
8c042590 PM |
623 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
624 | volatile_prefix, len); | |
c906108c SS |
625 | } |
626 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 627 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 628 | |
433759f7 MS |
629 | mangled_name = (char *) xmalloc (mangled_name_len); |
630 | if (is_constructor) | |
631 | mangled_name[0] = '\0'; | |
632 | else | |
633 | strcpy (mangled_name, field_name); | |
634 | ||
c906108c SS |
635 | strcat (mangled_name, buf); |
636 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
637 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 638 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
639 | if (newname != NULL) |
640 | strcat (mangled_name, newname); | |
641 | ||
642 | strcat (mangled_name, physname); | |
643 | return (mangled_name); | |
644 | } | |
12af6855 | 645 | |
b250c185 | 646 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 647 | correctly allocated. */ |
eca864fe | 648 | |
b250c185 SW |
649 | void |
650 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 651 | const char *name, |
ccde22c0 | 652 | struct obstack *obstack) |
b250c185 | 653 | { |
7c5fdd25 | 654 | if (gsymbol->language == language_ada) |
f85f34ed TT |
655 | { |
656 | if (name == NULL) | |
657 | { | |
658 | gsymbol->ada_mangled = 0; | |
659 | gsymbol->language_specific.obstack = obstack; | |
660 | } | |
661 | else | |
662 | { | |
663 | gsymbol->ada_mangled = 1; | |
615b3f62 | 664 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
665 | } |
666 | } | |
29df156d | 667 | else |
615b3f62 | 668 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
669 | } |
670 | ||
671 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 672 | |
0d5cff50 | 673 | const char * |
b250c185 SW |
674 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
675 | { | |
7c5fdd25 | 676 | if (gsymbol->language == language_ada) |
f85f34ed TT |
677 | { |
678 | if (!gsymbol->ada_mangled) | |
679 | return NULL; | |
680 | /* Fall through. */ | |
681 | } | |
682 | ||
615b3f62 | 683 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
684 | } |
685 | ||
12af6855 | 686 | \f |
89aad1f9 | 687 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 688 | depending upon the language for the symbol. */ |
eca864fe | 689 | |
89aad1f9 | 690 | void |
33e5013e | 691 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
692 | enum language language, |
693 | struct obstack *obstack) | |
89aad1f9 EZ |
694 | { |
695 | gsymbol->language = language; | |
7c5fdd25 DE |
696 | if (gsymbol->language == language_cplus |
697 | || gsymbol->language == language_d | |
a766d390 | 698 | || gsymbol->language == language_go |
f55ee35c JK |
699 | || gsymbol->language == language_objc |
700 | || gsymbol->language == language_fortran) | |
89aad1f9 | 701 | { |
f85f34ed TT |
702 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
703 | } | |
704 | else if (gsymbol->language == language_ada) | |
705 | { | |
706 | gdb_assert (gsymbol->ada_mangled == 0); | |
707 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 708 | } |
89aad1f9 EZ |
709 | else |
710 | { | |
711 | memset (&gsymbol->language_specific, 0, | |
712 | sizeof (gsymbol->language_specific)); | |
713 | } | |
714 | } | |
715 | ||
2de7ced7 DJ |
716 | /* Functions to initialize a symbol's mangled name. */ |
717 | ||
04a679b8 TT |
718 | /* Objects of this type are stored in the demangled name hash table. */ |
719 | struct demangled_name_entry | |
720 | { | |
3a494279 CB |
721 | demangled_name_entry (gdb::string_view mangled_name) |
722 | : mangled (mangled_name) {} | |
723 | ||
7bb43059 | 724 | gdb::string_view mangled; |
403772ef | 725 | enum language language; |
04a679b8 TT |
726 | char demangled[1]; |
727 | }; | |
728 | ||
729 | /* Hash function for the demangled name hash. */ | |
eca864fe | 730 | |
04a679b8 TT |
731 | static hashval_t |
732 | hash_demangled_name_entry (const void *data) | |
733 | { | |
19ba03f4 SM |
734 | const struct demangled_name_entry *e |
735 | = (const struct demangled_name_entry *) data; | |
433759f7 | 736 | |
1a6ff1a9 | 737 | return fast_hash (e->mangled.data (), e->mangled.length ()); |
04a679b8 TT |
738 | } |
739 | ||
740 | /* Equality function for the demangled name hash. */ | |
eca864fe | 741 | |
04a679b8 TT |
742 | static int |
743 | eq_demangled_name_entry (const void *a, const void *b) | |
744 | { | |
19ba03f4 SM |
745 | const struct demangled_name_entry *da |
746 | = (const struct demangled_name_entry *) a; | |
747 | const struct demangled_name_entry *db | |
748 | = (const struct demangled_name_entry *) b; | |
433759f7 | 749 | |
7bb43059 | 750 | return da->mangled == db->mangled; |
04a679b8 TT |
751 | } |
752 | ||
3a494279 CB |
753 | static void |
754 | free_demangled_name_entry (void *data) | |
755 | { | |
756 | struct demangled_name_entry *e | |
757 | = (struct demangled_name_entry *) data; | |
758 | ||
759 | e->~demangled_name_entry(); | |
760 | } | |
761 | ||
2de7ced7 DJ |
762 | /* Create the hash table used for demangled names. Each hash entry is |
763 | a pair of strings; one for the mangled name and one for the demangled | |
764 | name. The entry is hashed via just the mangled name. */ | |
765 | ||
766 | static void | |
0f14768a | 767 | create_demangled_names_hash (struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 DJ |
768 | { |
769 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 770 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
771 | Choosing a much larger table size wastes memory, and saves only about |
772 | 1% in symbol reading. */ | |
773 | ||
db92718b | 774 | per_bfd->demangled_names_hash.reset (htab_create_alloc |
04a679b8 | 775 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
3a494279 | 776 | free_demangled_name_entry, xcalloc, xfree)); |
2de7ced7 | 777 | } |
12af6855 | 778 | |
2de7ced7 | 779 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
780 | language of that symbol. If the language is set to language_auto, |
781 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
782 | then set the language appropriately. The returned name is allocated |
783 | by the demangler and should be xfree'd. */ | |
12af6855 | 784 | |
2de7ced7 DJ |
785 | static char * |
786 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
787 | const char *mangled) | |
12af6855 | 788 | { |
12af6855 | 789 | char *demangled = NULL; |
8b302db8 | 790 | int i; |
12af6855 JB |
791 | |
792 | if (gsymbol->language == language_unknown) | |
793 | gsymbol->language = language_auto; | |
1bae87b9 | 794 | |
8b302db8 | 795 | if (gsymbol->language != language_auto) |
1bae87b9 | 796 | { |
8b302db8 TT |
797 | const struct language_defn *lang = language_def (gsymbol->language); |
798 | ||
799 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
800 | return demangled; | |
6aecb9c2 | 801 | } |
8b302db8 TT |
802 | |
803 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 804 | { |
8b302db8 TT |
805 | enum language l = (enum language) i; |
806 | const struct language_defn *lang = language_def (l); | |
807 | ||
808 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 809 | { |
8b302db8 | 810 | gsymbol->language = l; |
a766d390 DE |
811 | return demangled; |
812 | } | |
813 | } | |
814 | ||
2de7ced7 DJ |
815 | return NULL; |
816 | } | |
817 | ||
980cae7a | 818 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
819 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
820 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
821 | NUL-terminated, then this function assumes that NAME is already | |
822 | correctly saved (either permanently or with a lifetime tied to the | |
823 | objfile), and it will not be copied. | |
824 | ||
825 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 826 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 827 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
828 | |
829 | void | |
830 | symbol_set_names (struct general_symbol_info *gsymbol, | |
67547d89 | 831 | const char *linkage_name, int len, bool copy_name, |
1d94a5a3 | 832 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 833 | { |
04a679b8 | 834 | struct demangled_name_entry **slot; |
980cae7a DC |
835 | /* A 0-terminated copy of the linkage name. */ |
836 | const char *linkage_name_copy; | |
2de7ced7 | 837 | |
b06ead72 JB |
838 | if (gsymbol->language == language_ada) |
839 | { | |
840 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 841 | we can save some space by not storing the demangled name. */ |
04a679b8 | 842 | if (!copy_name) |
0d5cff50 | 843 | gsymbol->name = linkage_name; |
04a679b8 TT |
844 | else |
845 | { | |
224c3ddb SM |
846 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
847 | len + 1); | |
0d5cff50 DE |
848 | |
849 | memcpy (name, linkage_name, len); | |
850 | name[len] = '\0'; | |
851 | gsymbol->name = name; | |
04a679b8 | 852 | } |
84a1243b | 853 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
854 | |
855 | return; | |
856 | } | |
857 | ||
84a1243b | 858 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 859 | create_demangled_names_hash (per_bfd); |
04a679b8 | 860 | |
9c37b5ae | 861 | if (linkage_name[len] != '\0') |
2de7ced7 | 862 | { |
980cae7a DC |
863 | char *alloc_name; |
864 | ||
9c37b5ae | 865 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 866 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 867 | alloc_name[len] = '\0'; |
980cae7a DC |
868 | |
869 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
870 | } |
871 | else | |
9c37b5ae | 872 | linkage_name_copy = linkage_name; |
2de7ced7 | 873 | |
3a494279 | 874 | struct demangled_name_entry entry (gdb::string_view (linkage_name_copy, len)); |
04a679b8 | 875 | slot = ((struct demangled_name_entry **) |
db92718b | 876 | htab_find_slot (per_bfd->demangled_names_hash.get (), |
04a679b8 | 877 | &entry, INSERT)); |
2de7ced7 DJ |
878 | |
879 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
880 | if (*slot == NULL |
881 | /* A C version of the symbol may have already snuck into the table. | |
882 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
883 | || (gsymbol->language == language_go | |
884 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 885 | { |
e99f9db0 TV |
886 | char *demangled_name_ptr |
887 | = symbol_find_demangled_name (gsymbol, linkage_name_copy); | |
888 | gdb::unique_xmalloc_ptr<char> demangled_name (demangled_name_ptr); | |
9325300d | 889 | int demangled_len = demangled_name ? strlen (demangled_name.get ()) : 0; |
2de7ced7 | 890 | |
04a679b8 | 891 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 892 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
893 | mangled name saved, and we don't have a demangled name. So, |
894 | you might think we could save a little space by not recording | |
895 | this in the hash table at all. | |
896 | ||
897 | It turns out that it is actually important to still save such | |
898 | an entry in the hash table, because storing this name gives | |
705b5767 | 899 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 900 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 901 | { |
224c3ddb SM |
902 | *slot |
903 | = ((struct demangled_name_entry *) | |
904 | obstack_alloc (&per_bfd->storage_obstack, | |
905 | offsetof (struct demangled_name_entry, demangled) | |
906 | + demangled_len + 1)); | |
3a494279 CB |
907 | new (*slot) demangled_name_entry |
908 | (gdb::string_view (linkage_name, len)); | |
04a679b8 TT |
909 | } |
910 | else | |
911 | { | |
9d2ceabe TT |
912 | char *mangled_ptr; |
913 | ||
04a679b8 TT |
914 | /* If we must copy the mangled name, put it directly after |
915 | the demangled name so we can have a single | |
916 | allocation. */ | |
224c3ddb SM |
917 | *slot |
918 | = ((struct demangled_name_entry *) | |
919 | obstack_alloc (&per_bfd->storage_obstack, | |
920 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 921 | + len + demangled_len + 2)); |
9d2ceabe | 922 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 923 | strcpy (mangled_ptr, linkage_name_copy); |
3a494279 CB |
924 | new (*slot) demangled_name_entry |
925 | (gdb::string_view (mangled_ptr, len)); | |
04a679b8 | 926 | } |
e99f9db0 | 927 | (*slot)->language = gsymbol->language; |
04a679b8 | 928 | |
980cae7a | 929 | if (demangled_name != NULL) |
e99f9db0 | 930 | strcpy ((*slot)->demangled, demangled_name.get ()); |
2de7ced7 | 931 | else |
04a679b8 | 932 | (*slot)->demangled[0] = '\0'; |
2de7ced7 | 933 | } |
e99f9db0 TV |
934 | else if (gsymbol->language == language_unknown |
935 | || gsymbol->language == language_auto) | |
936 | gsymbol->language = (*slot)->language; | |
2de7ced7 | 937 | |
7bb43059 | 938 | gsymbol->name = (*slot)->mangled.data (); |
04a679b8 | 939 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 940 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 941 | &per_bfd->storage_obstack); |
2de7ced7 | 942 | else |
84a1243b | 943 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
944 | } |
945 | ||
22abf04a DC |
946 | /* Return the source code name of a symbol. In languages where |
947 | demangling is necessary, this is the demangled name. */ | |
948 | ||
0d5cff50 | 949 | const char * |
22abf04a DC |
950 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
951 | { | |
9af17804 | 952 | switch (gsymbol->language) |
22abf04a | 953 | { |
1f8173e6 | 954 | case language_cplus: |
6aecb9c2 | 955 | case language_d: |
a766d390 | 956 | case language_go: |
1f8173e6 | 957 | case language_objc: |
f55ee35c | 958 | case language_fortran: |
b250c185 SW |
959 | if (symbol_get_demangled_name (gsymbol) != NULL) |
960 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
961 | break; |
962 | case language_ada: | |
f85f34ed | 963 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
964 | default: |
965 | break; | |
22abf04a | 966 | } |
1f8173e6 | 967 | return gsymbol->name; |
22abf04a DC |
968 | } |
969 | ||
9cc0d196 | 970 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 971 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 972 | |
0d5cff50 | 973 | const char * |
df8a16a1 | 974 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 975 | { |
c6e5ee5e SDJ |
976 | const char *dem_name = NULL; |
977 | ||
9af17804 | 978 | switch (gsymbol->language) |
1f8173e6 PH |
979 | { |
980 | case language_cplus: | |
6aecb9c2 | 981 | case language_d: |
a766d390 | 982 | case language_go: |
1f8173e6 | 983 | case language_objc: |
f55ee35c | 984 | case language_fortran: |
c6e5ee5e | 985 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
986 | break; |
987 | case language_ada: | |
f85f34ed | 988 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
989 | break; |
990 | default: | |
991 | break; | |
992 | } | |
c6e5ee5e | 993 | return dem_name; |
9cc0d196 | 994 | } |
fe39c653 | 995 | |
4725b721 PH |
996 | /* Return the search name of a symbol---generally the demangled or |
997 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 998 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 999 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 1000 | |
0d5cff50 | 1001 | const char * |
fc062ac6 JB |
1002 | symbol_search_name (const struct general_symbol_info *gsymbol) |
1003 | { | |
1f8173e6 PH |
1004 | if (gsymbol->language == language_ada) |
1005 | return gsymbol->name; | |
1006 | else | |
1007 | return symbol_natural_name (gsymbol); | |
4725b721 | 1008 | } |
b5ec771e PA |
1009 | |
1010 | /* See symtab.h. */ | |
1011 | ||
1012 | bool | |
1013 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
1014 | const lookup_name_info &name) | |
1015 | { | |
1016 | symbol_name_matcher_ftype *name_match | |
618daa93 | 1017 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
1018 | return name_match (symbol_search_name (gsymbol), name, NULL); |
1019 | } | |
1020 | ||
c906108c SS |
1021 | \f |
1022 | ||
ececd218 | 1023 | /* Return true if the two sections are the same, or if they could |
94277a38 DJ |
1024 | plausibly be copies of each other, one in an original object |
1025 | file and another in a separated debug file. */ | |
1026 | ||
ececd218 | 1027 | bool |
714835d5 UW |
1028 | matching_obj_sections (struct obj_section *obj_first, |
1029 | struct obj_section *obj_second) | |
94277a38 | 1030 | { |
714835d5 UW |
1031 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1032 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1033 | |
1034 | /* If they're the same section, then they match. */ | |
1035 | if (first == second) | |
ececd218 | 1036 | return true; |
94277a38 DJ |
1037 | |
1038 | /* If either is NULL, give up. */ | |
1039 | if (first == NULL || second == NULL) | |
ececd218 | 1040 | return false; |
94277a38 DJ |
1041 | |
1042 | /* This doesn't apply to absolute symbols. */ | |
1043 | if (first->owner == NULL || second->owner == NULL) | |
ececd218 | 1044 | return false; |
94277a38 DJ |
1045 | |
1046 | /* If they're in the same object file, they must be different sections. */ | |
1047 | if (first->owner == second->owner) | |
ececd218 | 1048 | return false; |
94277a38 DJ |
1049 | |
1050 | /* Check whether the two sections are potentially corresponding. They must | |
1051 | have the same size, address, and name. We can't compare section indexes, | |
1052 | which would be more reliable, because some sections may have been | |
1053 | stripped. */ | |
fd361982 | 1054 | if (bfd_section_size (first) != bfd_section_size (second)) |
ececd218 | 1055 | return false; |
94277a38 | 1056 | |
818f79f6 | 1057 | /* In-memory addresses may start at a different offset, relativize them. */ |
fd361982 AM |
1058 | if (bfd_section_vma (first) - bfd_get_start_address (first->owner) |
1059 | != bfd_section_vma (second) - bfd_get_start_address (second->owner)) | |
ececd218 | 1060 | return false; |
94277a38 | 1061 | |
fd361982 AM |
1062 | if (bfd_section_name (first) == NULL |
1063 | || bfd_section_name (second) == NULL | |
1064 | || strcmp (bfd_section_name (first), bfd_section_name (second)) != 0) | |
ececd218 | 1065 | return false; |
94277a38 DJ |
1066 | |
1067 | /* Otherwise check that they are in corresponding objfiles. */ | |
1068 | ||
9d7c67bf | 1069 | struct objfile *obj = NULL; |
2030c079 | 1070 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1071 | if (objfile->obfd == first->owner) |
1072 | { | |
1073 | obj = objfile; | |
1074 | break; | |
1075 | } | |
94277a38 DJ |
1076 | gdb_assert (obj != NULL); |
1077 | ||
1078 | if (obj->separate_debug_objfile != NULL | |
1079 | && obj->separate_debug_objfile->obfd == second->owner) | |
ececd218 | 1080 | return true; |
94277a38 DJ |
1081 | if (obj->separate_debug_objfile_backlink != NULL |
1082 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
ececd218 | 1083 | return true; |
94277a38 | 1084 | |
ececd218 | 1085 | return false; |
94277a38 | 1086 | } |
c5aa993b | 1087 | |
2097ae25 DE |
1088 | /* See symtab.h. */ |
1089 | ||
1090 | void | |
1091 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1092 | { |
77e371c0 | 1093 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1094 | |
1095 | /* If we know that this is not a text address, return failure. This is | |
1096 | necessary because we loop based on texthigh and textlow, which do | |
1097 | not include the data ranges. */ | |
77e371c0 | 1098 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1099 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1100 | return; |
c906108c | 1101 | |
2030c079 | 1102 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1103 | { |
1104 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1105 | |
aed57c53 TT |
1106 | if (objfile->sf) |
1107 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1108 | pc, section, 0); | |
1109 | if (cust) | |
1110 | return; | |
1111 | } | |
c906108c | 1112 | } |
c906108c | 1113 | \f |
f57d2163 DE |
1114 | /* Hash function for the symbol cache. */ |
1115 | ||
1116 | static unsigned int | |
1117 | hash_symbol_entry (const struct objfile *objfile_context, | |
1118 | const char *name, domain_enum domain) | |
1119 | { | |
1120 | unsigned int hash = (uintptr_t) objfile_context; | |
1121 | ||
1122 | if (name != NULL) | |
1123 | hash += htab_hash_string (name); | |
1124 | ||
2c26b84f DE |
1125 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1126 | to map to the same slot. */ | |
1127 | if (domain == STRUCT_DOMAIN) | |
1128 | hash += VAR_DOMAIN * 7; | |
1129 | else | |
1130 | hash += domain * 7; | |
f57d2163 DE |
1131 | |
1132 | return hash; | |
1133 | } | |
1134 | ||
1135 | /* Equality function for the symbol cache. */ | |
1136 | ||
1137 | static int | |
1138 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1139 | const struct objfile *objfile_context, | |
1140 | const char *name, domain_enum domain) | |
1141 | { | |
1142 | const char *slot_name; | |
1143 | domain_enum slot_domain; | |
1144 | ||
1145 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1146 | return 0; | |
1147 | ||
1148 | if (slot->objfile_context != objfile_context) | |
1149 | return 0; | |
1150 | ||
1151 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1152 | { | |
1153 | slot_name = slot->value.not_found.name; | |
1154 | slot_domain = slot->value.not_found.domain; | |
1155 | } | |
1156 | else | |
1157 | { | |
d12307c1 PMR |
1158 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1159 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1160 | } |
1161 | ||
1162 | /* NULL names match. */ | |
1163 | if (slot_name == NULL && name == NULL) | |
1164 | { | |
1165 | /* But there's no point in calling symbol_matches_domain in the | |
1166 | SYMBOL_SLOT_FOUND case. */ | |
1167 | if (slot_domain != domain) | |
1168 | return 0; | |
1169 | } | |
1170 | else if (slot_name != NULL && name != NULL) | |
1171 | { | |
b5ec771e PA |
1172 | /* It's important that we use the same comparison that was done |
1173 | the first time through. If the slot records a found symbol, | |
1174 | then this means using the symbol name comparison function of | |
1175 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1176 | dictionary.c. It also means using symbol_matches_domain for | |
1177 | found symbols. See block.c. | |
f57d2163 DE |
1178 | |
1179 | If the slot records a not-found symbol, then require a precise match. | |
1180 | We could still be lax with whitespace like strcmp_iw though. */ | |
1181 | ||
1182 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1183 | { | |
1184 | if (strcmp (slot_name, name) != 0) | |
1185 | return 0; | |
1186 | if (slot_domain != domain) | |
1187 | return 0; | |
1188 | } | |
1189 | else | |
1190 | { | |
d12307c1 | 1191 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1192 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1193 | |
b5ec771e | 1194 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1195 | return 0; |
b5ec771e | 1196 | |
f57d2163 DE |
1197 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1198 | slot_domain, domain)) | |
1199 | return 0; | |
1200 | } | |
1201 | } | |
1202 | else | |
1203 | { | |
1204 | /* Only one name is NULL. */ | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | return 1; | |
1209 | } | |
1210 | ||
1211 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1212 | length array) in bytes. */ | |
1213 | ||
1214 | static size_t | |
1215 | symbol_cache_byte_size (unsigned int size) | |
1216 | { | |
1217 | return (sizeof (struct block_symbol_cache) | |
1218 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1219 | } | |
1220 | ||
1221 | /* Resize CACHE. */ | |
1222 | ||
1223 | static void | |
1224 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1225 | { | |
1226 | /* If there's no change in size, don't do anything. | |
1227 | All caches have the same size, so we can just compare with the size | |
1228 | of the global symbols cache. */ | |
1229 | if ((cache->global_symbols != NULL | |
1230 | && cache->global_symbols->size == new_size) | |
1231 | || (cache->global_symbols == NULL | |
1232 | && new_size == 0)) | |
1233 | return; | |
1234 | ||
1235 | xfree (cache->global_symbols); | |
1236 | xfree (cache->static_symbols); | |
1237 | ||
1238 | if (new_size == 0) | |
1239 | { | |
1240 | cache->global_symbols = NULL; | |
1241 | cache->static_symbols = NULL; | |
1242 | } | |
1243 | else | |
1244 | { | |
1245 | size_t total_size = symbol_cache_byte_size (new_size); | |
1246 | ||
224c3ddb SM |
1247 | cache->global_symbols |
1248 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1249 | cache->static_symbols | |
1250 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1251 | cache->global_symbols->size = new_size; |
1252 | cache->static_symbols->size = new_size; | |
1253 | } | |
1254 | } | |
1255 | ||
f57d2163 DE |
1256 | /* Return the symbol cache of PSPACE. |
1257 | Create one if it doesn't exist yet. */ | |
1258 | ||
1259 | static struct symbol_cache * | |
1260 | get_symbol_cache (struct program_space *pspace) | |
1261 | { | |
3017b94d | 1262 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1263 | |
1264 | if (cache == NULL) | |
1265 | { | |
3017b94d TT |
1266 | cache = symbol_cache_key.emplace (pspace); |
1267 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1268 | } |
1269 | ||
1270 | return cache; | |
1271 | } | |
1272 | ||
f57d2163 DE |
1273 | /* Set the size of the symbol cache in all program spaces. */ |
1274 | ||
1275 | static void | |
1276 | set_symbol_cache_size (unsigned int new_size) | |
1277 | { | |
1278 | struct program_space *pspace; | |
1279 | ||
1280 | ALL_PSPACES (pspace) | |
1281 | { | |
3017b94d | 1282 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1283 | |
1284 | /* The pspace could have been created but not have a cache yet. */ | |
1285 | if (cache != NULL) | |
1286 | resize_symbol_cache (cache, new_size); | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | /* Called when symbol-cache-size is set. */ | |
1291 | ||
1292 | static void | |
eb4c3f4a | 1293 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1294 | struct cmd_list_element *c) |
1295 | { | |
1296 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1297 | { | |
1298 | /* Restore the previous value. | |
1299 | This is the value the "show" command prints. */ | |
1300 | new_symbol_cache_size = symbol_cache_size; | |
1301 | ||
1302 | error (_("Symbol cache size is too large, max is %u."), | |
1303 | MAX_SYMBOL_CACHE_SIZE); | |
1304 | } | |
1305 | symbol_cache_size = new_symbol_cache_size; | |
1306 | ||
1307 | set_symbol_cache_size (symbol_cache_size); | |
1308 | } | |
1309 | ||
1310 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1311 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1312 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1313 | failed (and thus this one will too), or NULL if the symbol is not present | |
1314 | in the cache. | |
d0509ba4 CB |
1315 | *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which |
1316 | can be used to save the result of a full lookup attempt. */ | |
f57d2163 | 1317 | |
d12307c1 | 1318 | static struct block_symbol |
f57d2163 | 1319 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1320 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1321 | const char *name, domain_enum domain, |
1322 | struct block_symbol_cache **bsc_ptr, | |
1323 | struct symbol_cache_slot **slot_ptr) | |
1324 | { | |
1325 | struct block_symbol_cache *bsc; | |
1326 | unsigned int hash; | |
1327 | struct symbol_cache_slot *slot; | |
1328 | ||
1329 | if (block == GLOBAL_BLOCK) | |
1330 | bsc = cache->global_symbols; | |
1331 | else | |
1332 | bsc = cache->static_symbols; | |
1333 | if (bsc == NULL) | |
1334 | { | |
1335 | *bsc_ptr = NULL; | |
1336 | *slot_ptr = NULL; | |
6640a367 | 1337 | return {}; |
f57d2163 DE |
1338 | } |
1339 | ||
1340 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1341 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 | 1342 | |
d0509ba4 CB |
1343 | *bsc_ptr = bsc; |
1344 | *slot_ptr = slot; | |
1345 | ||
f57d2163 DE |
1346 | if (eq_symbol_entry (slot, objfile_context, name, domain)) |
1347 | { | |
1348 | if (symbol_lookup_debug) | |
1349 | fprintf_unfiltered (gdb_stdlog, | |
1350 | "%s block symbol cache hit%s for %s, %s\n", | |
1351 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1352 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1353 | ? " (not found)" : "", | |
1354 | name, domain_name (domain)); | |
1355 | ++bsc->hits; | |
1356 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1357 | return SYMBOL_LOOKUP_FAILED; | |
1358 | return slot->value.found; | |
1359 | } | |
1360 | ||
2c26b84f DE |
1361 | /* Symbol is not present in the cache. */ |
1362 | ||
f57d2163 DE |
1363 | if (symbol_lookup_debug) |
1364 | { | |
1365 | fprintf_unfiltered (gdb_stdlog, | |
1366 | "%s block symbol cache miss for %s, %s\n", | |
1367 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1368 | name, domain_name (domain)); | |
1369 | } | |
1370 | ++bsc->misses; | |
6640a367 | 1371 | return {}; |
f57d2163 DE |
1372 | } |
1373 | ||
1374 | /* Clear out SLOT. */ | |
1375 | ||
1376 | static void | |
1377 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1378 | { | |
1379 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1380 | xfree (slot->value.not_found.name); | |
1381 | slot->state = SYMBOL_SLOT_UNUSED; | |
1382 | } | |
1383 | ||
1384 | /* Mark SYMBOL as found in SLOT. | |
1385 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1386 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1387 | necessarily the objfile the symbol was found in. */ | |
1388 | ||
1389 | static void | |
1390 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1391 | struct symbol_cache_slot *slot, | |
1392 | struct objfile *objfile_context, | |
d12307c1 PMR |
1393 | struct symbol *symbol, |
1394 | const struct block *block) | |
f57d2163 DE |
1395 | { |
1396 | if (bsc == NULL) | |
1397 | return; | |
1398 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1399 | { | |
1400 | ++bsc->collisions; | |
1401 | symbol_cache_clear_slot (slot); | |
1402 | } | |
1403 | slot->state = SYMBOL_SLOT_FOUND; | |
1404 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1405 | slot->value.found.symbol = symbol; |
1406 | slot->value.found.block = block; | |
f57d2163 DE |
1407 | } |
1408 | ||
1409 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1410 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1411 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1412 | ||
1413 | static void | |
1414 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1415 | struct symbol_cache_slot *slot, | |
1416 | struct objfile *objfile_context, | |
1417 | const char *name, domain_enum domain) | |
1418 | { | |
1419 | if (bsc == NULL) | |
1420 | return; | |
1421 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1422 | { | |
1423 | ++bsc->collisions; | |
1424 | symbol_cache_clear_slot (slot); | |
1425 | } | |
1426 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1427 | slot->objfile_context = objfile_context; | |
1428 | slot->value.not_found.name = xstrdup (name); | |
1429 | slot->value.not_found.domain = domain; | |
1430 | } | |
1431 | ||
1432 | /* Flush the symbol cache of PSPACE. */ | |
1433 | ||
1434 | static void | |
1435 | symbol_cache_flush (struct program_space *pspace) | |
1436 | { | |
3017b94d | 1437 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1438 | int pass; |
f57d2163 DE |
1439 | |
1440 | if (cache == NULL) | |
1441 | return; | |
1442 | if (cache->global_symbols == NULL) | |
1443 | { | |
1444 | gdb_assert (symbol_cache_size == 0); | |
1445 | gdb_assert (cache->static_symbols == NULL); | |
1446 | return; | |
1447 | } | |
1448 | ||
1449 | /* If the cache is untouched since the last flush, early exit. | |
1450 | This is important for performance during the startup of a program linked | |
1451 | with 100s (or 1000s) of shared libraries. */ | |
1452 | if (cache->global_symbols->misses == 0 | |
1453 | && cache->static_symbols->misses == 0) | |
1454 | return; | |
1455 | ||
1456 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1457 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1458 | ||
1459 | for (pass = 0; pass < 2; ++pass) | |
1460 | { | |
1461 | struct block_symbol_cache *bsc | |
1462 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1463 | unsigned int i; | |
1464 | ||
1465 | for (i = 0; i < bsc->size; ++i) | |
1466 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1467 | } | |
1468 | ||
1469 | cache->global_symbols->hits = 0; | |
1470 | cache->global_symbols->misses = 0; | |
1471 | cache->global_symbols->collisions = 0; | |
1472 | cache->static_symbols->hits = 0; | |
1473 | cache->static_symbols->misses = 0; | |
1474 | cache->static_symbols->collisions = 0; | |
1475 | } | |
1476 | ||
1477 | /* Dump CACHE. */ | |
1478 | ||
1479 | static void | |
1480 | symbol_cache_dump (const struct symbol_cache *cache) | |
1481 | { | |
1482 | int pass; | |
1483 | ||
1484 | if (cache->global_symbols == NULL) | |
1485 | { | |
1486 | printf_filtered (" <disabled>\n"); | |
1487 | return; | |
1488 | } | |
1489 | ||
1490 | for (pass = 0; pass < 2; ++pass) | |
1491 | { | |
1492 | const struct block_symbol_cache *bsc | |
1493 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1494 | unsigned int i; | |
1495 | ||
1496 | if (pass == 0) | |
1497 | printf_filtered ("Global symbols:\n"); | |
1498 | else | |
1499 | printf_filtered ("Static symbols:\n"); | |
1500 | ||
1501 | for (i = 0; i < bsc->size; ++i) | |
1502 | { | |
1503 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1504 | ||
1505 | QUIT; | |
1506 | ||
1507 | switch (slot->state) | |
1508 | { | |
1509 | case SYMBOL_SLOT_UNUSED: | |
1510 | break; | |
1511 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1512 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1513 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1514 | slot->value.not_found.name, |
1515 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1516 | break; |
1517 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1518 | { |
1519 | struct symbol *found = slot->value.found.symbol; | |
1520 | const struct objfile *context = slot->objfile_context; | |
1521 | ||
1522 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1523 | host_address_to_string (context), | |
1524 | SYMBOL_PRINT_NAME (found), | |
1525 | domain_name (SYMBOL_DOMAIN (found))); | |
1526 | break; | |
1527 | } | |
f57d2163 DE |
1528 | } |
1529 | } | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | /* The "mt print symbol-cache" command. */ | |
1534 | ||
1535 | static void | |
510e5e56 | 1536 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1537 | { |
1538 | struct program_space *pspace; | |
1539 | ||
1540 | ALL_PSPACES (pspace) | |
1541 | { | |
1542 | struct symbol_cache *cache; | |
1543 | ||
1544 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1545 | pspace->num, | |
1546 | pspace->symfile_object_file != NULL | |
1547 | ? objfile_name (pspace->symfile_object_file) | |
1548 | : "(no object file)"); | |
1549 | ||
1550 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1551 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1552 | if (cache == NULL) |
1553 | printf_filtered (" <empty>\n"); | |
1554 | else | |
1555 | symbol_cache_dump (cache); | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | /* The "mt flush-symbol-cache" command. */ | |
1560 | ||
1561 | static void | |
510e5e56 | 1562 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1563 | { |
1564 | struct program_space *pspace; | |
1565 | ||
1566 | ALL_PSPACES (pspace) | |
1567 | { | |
1568 | symbol_cache_flush (pspace); | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | /* Print usage statistics of CACHE. */ | |
1573 | ||
1574 | static void | |
1575 | symbol_cache_stats (struct symbol_cache *cache) | |
1576 | { | |
1577 | int pass; | |
1578 | ||
1579 | if (cache->global_symbols == NULL) | |
1580 | { | |
1581 | printf_filtered (" <disabled>\n"); | |
1582 | return; | |
1583 | } | |
1584 | ||
1585 | for (pass = 0; pass < 2; ++pass) | |
1586 | { | |
1587 | const struct block_symbol_cache *bsc | |
1588 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1589 | ||
1590 | QUIT; | |
1591 | ||
1592 | if (pass == 0) | |
1593 | printf_filtered ("Global block cache stats:\n"); | |
1594 | else | |
1595 | printf_filtered ("Static block cache stats:\n"); | |
1596 | ||
1597 | printf_filtered (" size: %u\n", bsc->size); | |
1598 | printf_filtered (" hits: %u\n", bsc->hits); | |
1599 | printf_filtered (" misses: %u\n", bsc->misses); | |
1600 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1601 | } | |
1602 | } | |
1603 | ||
1604 | /* The "mt print symbol-cache-statistics" command. */ | |
1605 | ||
1606 | static void | |
510e5e56 | 1607 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1608 | { |
1609 | struct program_space *pspace; | |
1610 | ||
1611 | ALL_PSPACES (pspace) | |
1612 | { | |
1613 | struct symbol_cache *cache; | |
1614 | ||
1615 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1616 | pspace->num, | |
1617 | pspace->symfile_object_file != NULL | |
1618 | ? objfile_name (pspace->symfile_object_file) | |
1619 | : "(no object file)"); | |
1620 | ||
1621 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1622 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1623 | if (cache == NULL) |
1624 | printf_filtered (" empty, no stats available\n"); | |
1625 | else | |
1626 | symbol_cache_stats (cache); | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | /* This module's 'new_objfile' observer. */ | |
1631 | ||
1632 | static void | |
1633 | symtab_new_objfile_observer (struct objfile *objfile) | |
1634 | { | |
1635 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1636 | symbol_cache_flush (current_program_space); | |
1637 | } | |
1638 | ||
1639 | /* This module's 'free_objfile' observer. */ | |
1640 | ||
1641 | static void | |
1642 | symtab_free_objfile_observer (struct objfile *objfile) | |
1643 | { | |
1644 | symbol_cache_flush (objfile->pspace); | |
1645 | } | |
1646 | \f | |
c906108c SS |
1647 | /* Debug symbols usually don't have section information. We need to dig that |
1648 | out of the minimal symbols and stash that in the debug symbol. */ | |
1649 | ||
ccefe4c4 | 1650 | void |
907fc202 UW |
1651 | fixup_section (struct general_symbol_info *ginfo, |
1652 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1653 | { |
1654 | struct minimal_symbol *msym; | |
c906108c | 1655 | |
bccdca4a UW |
1656 | /* First, check whether a minimal symbol with the same name exists |
1657 | and points to the same address. The address check is required | |
1658 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1659 | point to the function descriptor, while the debug symbol will | |
1660 | point to the actual function code. */ | |
907fc202 UW |
1661 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1662 | if (msym) | |
efd66ac6 | 1663 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1664 | else |
19e2d14b KB |
1665 | { |
1666 | /* Static, function-local variables do appear in the linker | |
1667 | (minimal) symbols, but are frequently given names that won't | |
1668 | be found via lookup_minimal_symbol(). E.g., it has been | |
1669 | observed in frv-uclinux (ELF) executables that a static, | |
1670 | function-local variable named "foo" might appear in the | |
1671 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1672 | point in attempting to extend the lookup-by-name mechanism to | |
1673 | handle this case due to the fact that there can be multiple | |
1674 | names. | |
9af17804 | 1675 | |
19e2d14b KB |
1676 | So, instead, search the section table when lookup by name has |
1677 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1678 | been relocated. If so, the relocation offset (i.e. the | |
1679 | ANOFFSET value) needs to be subtracted from these values when | |
1680 | performing the comparison. We unconditionally subtract it, | |
1681 | because, when no relocation has been performed, the ANOFFSET | |
1682 | value will simply be zero. | |
9af17804 | 1683 | |
19e2d14b KB |
1684 | The address of the symbol whose section we're fixing up HAS |
1685 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1686 | the section isn't yet known and knowing the section is | |
1687 | necessary in order to add the correct relocation value. In | |
1688 | other words, we wouldn't even be in this function (attempting | |
1689 | to compute the section) if it were already known. | |
1690 | ||
1691 | Note that it is possible to search the minimal symbols | |
1692 | (subtracting the relocation value if necessary) to find the | |
1693 | matching minimal symbol, but this is overkill and much less | |
1694 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1695 | symbol, only its section. |
1696 | ||
19e2d14b KB |
1697 | Note that this technique (of doing a section table search) |
1698 | can fail when unrelocated section addresses overlap. For | |
1699 | this reason, we still attempt a lookup by name prior to doing | |
1700 | a search of the section table. */ | |
9af17804 | 1701 | |
19e2d14b | 1702 | struct obj_section *s; |
e27d198c | 1703 | int fallback = -1; |
433759f7 | 1704 | |
19e2d14b KB |
1705 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1706 | { | |
65cf3563 | 1707 | int idx = s - objfile->sections; |
19e2d14b KB |
1708 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1709 | ||
e27d198c TT |
1710 | if (fallback == -1) |
1711 | fallback = idx; | |
1712 | ||
f1f6aadf PA |
1713 | if (obj_section_addr (s) - offset <= addr |
1714 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1715 | { |
19e2d14b KB |
1716 | ginfo->section = idx; |
1717 | return; | |
1718 | } | |
1719 | } | |
e27d198c TT |
1720 | |
1721 | /* If we didn't find the section, assume it is in the first | |
1722 | section. If there is no allocated section, then it hardly | |
1723 | matters what we pick, so just pick zero. */ | |
1724 | if (fallback == -1) | |
1725 | ginfo->section = 0; | |
1726 | else | |
1727 | ginfo->section = fallback; | |
19e2d14b | 1728 | } |
c906108c SS |
1729 | } |
1730 | ||
1731 | struct symbol * | |
fba45db2 | 1732 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1733 | { |
907fc202 UW |
1734 | CORE_ADDR addr; |
1735 | ||
c906108c SS |
1736 | if (!sym) |
1737 | return NULL; | |
1738 | ||
1994afbf DE |
1739 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1740 | return sym; | |
1741 | ||
907fc202 UW |
1742 | /* We either have an OBJFILE, or we can get at it from the sym's |
1743 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1744 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1745 | |
1746 | if (objfile == NULL) | |
08be3fe3 | 1747 | objfile = symbol_objfile (sym); |
907fc202 | 1748 | |
e27d198c TT |
1749 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1750 | return sym; | |
1751 | ||
907fc202 UW |
1752 | /* We should have an objfile by now. */ |
1753 | gdb_assert (objfile); | |
1754 | ||
1755 | switch (SYMBOL_CLASS (sym)) | |
1756 | { | |
1757 | case LOC_STATIC: | |
1758 | case LOC_LABEL: | |
907fc202 UW |
1759 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1760 | break; | |
1761 | case LOC_BLOCK: | |
2b1ffcfd | 1762 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1763 | break; |
1764 | ||
1765 | default: | |
1766 | /* Nothing else will be listed in the minsyms -- no use looking | |
1767 | it up. */ | |
1768 | return sym; | |
1769 | } | |
1770 | ||
1771 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1772 | |
1773 | return sym; | |
1774 | } | |
1775 | ||
b5ec771e PA |
1776 | /* See symtab.h. */ |
1777 | ||
1778 | demangle_for_lookup_info::demangle_for_lookup_info | |
1779 | (const lookup_name_info &lookup_name, language lang) | |
1780 | { | |
1781 | demangle_result_storage storage; | |
1782 | ||
c62446b1 PA |
1783 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1784 | { | |
1785 | gdb::unique_xmalloc_ptr<char> without_params | |
1786 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1787 | lookup_name.completion_mode ()); | |
1788 | ||
1789 | if (without_params != NULL) | |
1790 | { | |
de63c46b PA |
1791 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1792 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1793 | lang, storage); | |
c62446b1 PA |
1794 | return; |
1795 | } | |
1796 | } | |
1797 | ||
de63c46b PA |
1798 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1799 | m_demangled_name = lookup_name.name (); | |
1800 | else | |
1801 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1802 | lang, storage); | |
b5ec771e PA |
1803 | } |
1804 | ||
1805 | /* See symtab.h. */ | |
1806 | ||
1807 | const lookup_name_info & | |
1808 | lookup_name_info::match_any () | |
1809 | { | |
1810 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1811 | symbol names. */ | |
1812 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1813 | true); | |
1814 | ||
1815 | return lookup_name; | |
1816 | } | |
1817 | ||
f8eba3c6 | 1818 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1819 | lookup functions. The result can either be the input NAME |
1820 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1821 | |
2f408ecb | 1822 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1823 | Normally, Ada symbol lookups are performed using the encoded name |
1824 | rather than the demangled name, and so it might seem to make sense | |
1825 | for this function to return an encoded version of NAME. | |
1826 | Unfortunately, we cannot do this, because this function is used in | |
1827 | circumstances where it is not appropriate to try to encode NAME. | |
1828 | For instance, when displaying the frame info, we demangle the name | |
1829 | of each parameter, and then perform a symbol lookup inside our | |
1830 | function using that demangled name. In Ada, certain functions | |
1831 | have internally-generated parameters whose name contain uppercase | |
1832 | characters. Encoding those name would result in those uppercase | |
1833 | characters to become lowercase, and thus cause the symbol lookup | |
1834 | to fail. */ | |
c906108c | 1835 | |
2f408ecb | 1836 | const char * |
f8eba3c6 | 1837 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1838 | demangle_result_storage &storage) |
c906108c | 1839 | { |
9c37b5ae | 1840 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1841 | lookup, so we can always binary search. */ |
53c5240f | 1842 | if (lang == language_cplus) |
729051e6 | 1843 | { |
2f408ecb PA |
1844 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1845 | if (demangled_name != NULL) | |
1846 | return storage.set_malloc_ptr (demangled_name); | |
1847 | ||
1848 | /* If we were given a non-mangled name, canonicalize it | |
1849 | according to the language (so far only for C++). */ | |
1850 | std::string canon = cp_canonicalize_string (name); | |
1851 | if (!canon.empty ()) | |
1852 | return storage.swap_string (canon); | |
729051e6 | 1853 | } |
6aecb9c2 JB |
1854 | else if (lang == language_d) |
1855 | { | |
2f408ecb PA |
1856 | char *demangled_name = d_demangle (name, 0); |
1857 | if (demangled_name != NULL) | |
1858 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1859 | } |
a766d390 DE |
1860 | else if (lang == language_go) |
1861 | { | |
2f408ecb PA |
1862 | char *demangled_name = go_demangle (name, 0); |
1863 | if (demangled_name != NULL) | |
1864 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1865 | } |
729051e6 | 1866 | |
2f408ecb | 1867 | return name; |
f8eba3c6 TT |
1868 | } |
1869 | ||
5ffa0793 PA |
1870 | /* See symtab.h. */ |
1871 | ||
1872 | unsigned int | |
1873 | search_name_hash (enum language language, const char *search_name) | |
1874 | { | |
1875 | return language_def (language)->la_search_name_hash (search_name); | |
1876 | } | |
1877 | ||
cf901d3b | 1878 | /* See symtab.h. |
f8eba3c6 | 1879 | |
cf901d3b | 1880 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1881 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1882 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1883 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1884 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1885 | that there is C++ code below which can error(), but that probably |
1886 | doesn't affect these calls since they are looking for a known | |
1887 | variable and thus can probably assume it will never hit the C++ | |
1888 | code). */ | |
1889 | ||
d12307c1 | 1890 | struct block_symbol |
f8eba3c6 TT |
1891 | lookup_symbol_in_language (const char *name, const struct block *block, |
1892 | const domain_enum domain, enum language lang, | |
1993b719 | 1893 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1894 | { |
2f408ecb PA |
1895 | demangle_result_storage storage; |
1896 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1897 | |
de63c46b PA |
1898 | return lookup_symbol_aux (modified_name, |
1899 | symbol_name_match_type::FULL, | |
1900 | block, domain, lang, | |
2f408ecb | 1901 | is_a_field_of_this); |
fba7f19c EZ |
1902 | } |
1903 | ||
cf901d3b | 1904 | /* See symtab.h. */ |
53c5240f | 1905 | |
d12307c1 | 1906 | struct block_symbol |
53c5240f | 1907 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1908 | domain_enum domain, |
1909 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1910 | { |
1911 | return lookup_symbol_in_language (name, block, domain, | |
1912 | current_language->la_language, | |
2570f2b7 | 1913 | is_a_field_of_this); |
53c5240f PA |
1914 | } |
1915 | ||
cf901d3b | 1916 | /* See symtab.h. */ |
66a17cb6 | 1917 | |
de63c46b PA |
1918 | struct block_symbol |
1919 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1920 | domain_enum domain) | |
1921 | { | |
1922 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1923 | block, domain, language_asm, NULL); | |
1924 | } | |
1925 | ||
1926 | /* See symtab.h. */ | |
1927 | ||
d12307c1 | 1928 | struct block_symbol |
66a17cb6 TT |
1929 | lookup_language_this (const struct language_defn *lang, |
1930 | const struct block *block) | |
1931 | { | |
1932 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1933 | return {}; |
66a17cb6 | 1934 | |
cc485e62 DE |
1935 | if (symbol_lookup_debug > 1) |
1936 | { | |
1937 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1938 | ||
1939 | fprintf_unfiltered (gdb_stdlog, | |
1940 | "lookup_language_this (%s, %s (objfile %s))", | |
1941 | lang->la_name, host_address_to_string (block), | |
1942 | objfile_debug_name (objfile)); | |
1943 | } | |
1944 | ||
03de6823 | 1945 | while (block) |
66a17cb6 TT |
1946 | { |
1947 | struct symbol *sym; | |
1948 | ||
de63c46b PA |
1949 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1950 | symbol_name_match_type::SEARCH_NAME, | |
1951 | VAR_DOMAIN); | |
66a17cb6 | 1952 | if (sym != NULL) |
f149aabd | 1953 | { |
cc485e62 DE |
1954 | if (symbol_lookup_debug > 1) |
1955 | { | |
1956 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1957 | SYMBOL_PRINT_NAME (sym), | |
1958 | host_address_to_string (sym), | |
1959 | host_address_to_string (block)); | |
1960 | } | |
d12307c1 | 1961 | return (struct block_symbol) {sym, block}; |
f149aabd | 1962 | } |
66a17cb6 | 1963 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1964 | break; |
66a17cb6 TT |
1965 | block = BLOCK_SUPERBLOCK (block); |
1966 | } | |
03de6823 | 1967 | |
cc485e62 DE |
1968 | if (symbol_lookup_debug > 1) |
1969 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1970 | return {}; |
66a17cb6 TT |
1971 | } |
1972 | ||
2dc3df72 TT |
1973 | /* Given TYPE, a structure/union, |
1974 | return 1 if the component named NAME from the ultimate target | |
1975 | structure/union is defined, otherwise, return 0. */ | |
1976 | ||
1977 | static int | |
1993b719 TT |
1978 | check_field (struct type *type, const char *name, |
1979 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1980 | { |
1981 | int i; | |
1982 | ||
1983 | /* The type may be a stub. */ | |
f168693b | 1984 | type = check_typedef (type); |
2dc3df72 TT |
1985 | |
1986 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1987 | { | |
1988 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1989 | ||
1990 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1991 | { |
1992 | is_a_field_of_this->type = type; | |
1993 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1994 | return 1; | |
1995 | } | |
2dc3df72 TT |
1996 | } |
1997 | ||
1998 | /* C++: If it was not found as a data field, then try to return it | |
1999 | as a pointer to a method. */ | |
2000 | ||
2001 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
2002 | { | |
2003 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
2004 | { |
2005 | is_a_field_of_this->type = type; | |
2006 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
2007 | return 1; | |
2008 | } | |
2dc3df72 TT |
2009 | } |
2010 | ||
2011 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 2012 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2013 | return 1; |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
53c5240f | 2018 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2019 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2020 | |
d12307c1 | 2021 | static struct block_symbol |
de63c46b PA |
2022 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2023 | const struct block *block, | |
94af9270 | 2024 | const domain_enum domain, enum language language, |
1993b719 | 2025 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2026 | { |
d12307c1 | 2027 | struct block_symbol result; |
53c5240f | 2028 | const struct language_defn *langdef; |
406bc4de | 2029 | |
cc485e62 DE |
2030 | if (symbol_lookup_debug) |
2031 | { | |
2032 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2033 | ||
2034 | fprintf_unfiltered (gdb_stdlog, | |
2035 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2036 | name, host_address_to_string (block), | |
2037 | objfile != NULL | |
2038 | ? objfile_debug_name (objfile) : "NULL", | |
2039 | domain_name (domain), language_str (language)); | |
2040 | } | |
2041 | ||
9a146a11 EZ |
2042 | /* Make sure we do something sensible with is_a_field_of_this, since |
2043 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2044 | certainly use it later. If we don't set it, the contents of |
2045 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2046 | if (is_a_field_of_this != NULL) |
1993b719 | 2047 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2048 | |
e4051eeb DC |
2049 | /* Search specified block and its superiors. Don't search |
2050 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2051 | |
de63c46b | 2052 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2053 | if (result.symbol != NULL) |
cc485e62 DE |
2054 | { |
2055 | if (symbol_lookup_debug) | |
2056 | { | |
2057 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2058 | host_address_to_string (result.symbol)); |
cc485e62 | 2059 | } |
d12307c1 | 2060 | return result; |
cc485e62 | 2061 | } |
c906108c | 2062 | |
53c5240f | 2063 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2064 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2065 | |
2066 | langdef = language_def (language); | |
5f9a71c3 | 2067 | |
6592e36f TT |
2068 | /* Don't do this check if we are searching for a struct. It will |
2069 | not be found by check_field, but will be found by other | |
2070 | means. */ | |
2071 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2072 | { |
d12307c1 | 2073 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2074 | |
d12307c1 | 2075 | if (result.symbol) |
c906108c | 2076 | { |
d12307c1 | 2077 | struct type *t = result.symbol->type; |
9af17804 | 2078 | |
2b2d9e11 VP |
2079 | /* I'm not really sure that type of this can ever |
2080 | be typedefed; just be safe. */ | |
f168693b | 2081 | t = check_typedef (t); |
aa006118 | 2082 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2083 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2084 | |
2b2d9e11 VP |
2085 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2086 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2087 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2088 | langdef->la_name_of_this); |
9af17804 | 2089 | |
1993b719 | 2090 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2091 | { |
2092 | if (symbol_lookup_debug) | |
2093 | { | |
2094 | fprintf_unfiltered (gdb_stdlog, | |
2095 | "lookup_symbol_aux (...) = NULL\n"); | |
2096 | } | |
6640a367 | 2097 | return {}; |
cc485e62 | 2098 | } |
c906108c SS |
2099 | } |
2100 | } | |
2101 | ||
53c5240f | 2102 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2103 | up static and global variables. */ |
c906108c | 2104 | |
d12307c1 PMR |
2105 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2106 | if (result.symbol != NULL) | |
cc485e62 DE |
2107 | { |
2108 | if (symbol_lookup_debug) | |
2109 | { | |
2110 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2111 | host_address_to_string (result.symbol)); |
cc485e62 | 2112 | } |
d12307c1 | 2113 | return result; |
cc485e62 | 2114 | } |
c906108c | 2115 | |
774b6a14 TT |
2116 | /* Now search all static file-level symbols. Not strictly correct, |
2117 | but more useful than an error. */ | |
41f62f39 | 2118 | |
d12307c1 | 2119 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2120 | if (symbol_lookup_debug) |
2121 | { | |
2122 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2123 | result.symbol != NULL |
2124 | ? host_address_to_string (result.symbol) | |
2125 | : "NULL"); | |
cc485e62 | 2126 | } |
d12307c1 | 2127 | return result; |
41f62f39 JK |
2128 | } |
2129 | ||
e4051eeb | 2130 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2131 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2132 | |
d12307c1 | 2133 | static struct block_symbol |
de63c46b PA |
2134 | lookup_local_symbol (const char *name, |
2135 | symbol_name_match_type match_type, | |
2136 | const struct block *block, | |
74016e12 DE |
2137 | const domain_enum domain, |
2138 | enum language language) | |
8155455b DC |
2139 | { |
2140 | struct symbol *sym; | |
89a9d1b1 | 2141 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2142 | const char *scope = block_scope (block); |
2143 | ||
e4051eeb DC |
2144 | /* Check if either no block is specified or it's a global block. */ |
2145 | ||
89a9d1b1 | 2146 | if (static_block == NULL) |
6640a367 | 2147 | return {}; |
e4051eeb | 2148 | |
89a9d1b1 | 2149 | while (block != static_block) |
f61e8913 | 2150 | { |
de63c46b | 2151 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2152 | if (sym != NULL) |
d12307c1 | 2153 | return (struct block_symbol) {sym, block}; |
edb3359d | 2154 | |
f55ee35c | 2155 | if (language == language_cplus || language == language_fortran) |
13387711 | 2156 | { |
b926417a | 2157 | struct block_symbol blocksym |
d12307c1 PMR |
2158 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2159 | domain); | |
2160 | ||
b926417a TT |
2161 | if (blocksym.symbol != NULL) |
2162 | return blocksym; | |
13387711 SW |
2163 | } |
2164 | ||
edb3359d DJ |
2165 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2166 | break; | |
f61e8913 DC |
2167 | block = BLOCK_SUPERBLOCK (block); |
2168 | } | |
2169 | ||
3aee438b | 2170 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2171 | |
6640a367 | 2172 | return {}; |
f61e8913 DC |
2173 | } |
2174 | ||
cf901d3b | 2175 | /* See symtab.h. */ |
3a40aaa0 | 2176 | |
c0201579 | 2177 | struct objfile * |
3a40aaa0 UW |
2178 | lookup_objfile_from_block (const struct block *block) |
2179 | { | |
3a40aaa0 UW |
2180 | if (block == NULL) |
2181 | return NULL; | |
2182 | ||
2183 | block = block_global_block (block); | |
43f3e411 | 2184 | /* Look through all blockvectors. */ |
2030c079 | 2185 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2186 | { |
b669c953 | 2187 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2188 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2189 | GLOBAL_BLOCK)) | |
2190 | { | |
2191 | if (obj->separate_debug_objfile_backlink) | |
2192 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2193 | |
d8aeb77f TT |
2194 | return obj; |
2195 | } | |
2196 | } | |
3a40aaa0 UW |
2197 | |
2198 | return NULL; | |
2199 | } | |
2200 | ||
cf901d3b | 2201 | /* See symtab.h. */ |
f61e8913 | 2202 | |
5f9a71c3 | 2203 | struct symbol * |
de63c46b PA |
2204 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2205 | const struct block *block, | |
d1a2d36d | 2206 | const domain_enum domain) |
f61e8913 DC |
2207 | { |
2208 | struct symbol *sym; | |
f61e8913 | 2209 | |
cc485e62 DE |
2210 | if (symbol_lookup_debug > 1) |
2211 | { | |
2212 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2213 | ||
2214 | fprintf_unfiltered (gdb_stdlog, | |
2215 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2216 | name, host_address_to_string (block), | |
2217 | objfile_debug_name (objfile), | |
2218 | domain_name (domain)); | |
2219 | } | |
2220 | ||
de63c46b | 2221 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2222 | if (sym) |
8155455b | 2223 | { |
cc485e62 DE |
2224 | if (symbol_lookup_debug > 1) |
2225 | { | |
2226 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2227 | host_address_to_string (sym)); | |
2228 | } | |
21b556f4 | 2229 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2230 | } |
2231 | ||
cc485e62 DE |
2232 | if (symbol_lookup_debug > 1) |
2233 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2234 | return NULL; |
2235 | } | |
2236 | ||
cf901d3b | 2237 | /* See symtab.h. */ |
3a40aaa0 | 2238 | |
d12307c1 | 2239 | struct block_symbol |
efad9b6a | 2240 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2241 | enum block_enum block_index, |
3a40aaa0 | 2242 | const char *name, |
21b556f4 | 2243 | const domain_enum domain) |
3a40aaa0 | 2244 | { |
442853af CB |
2245 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2246 | ||
bde09ab7 | 2247 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2248 | { |
d12307c1 | 2249 | struct block_symbol result |
442853af | 2250 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2251 | |
442853af | 2252 | if (result.symbol != nullptr) |
d12307c1 | 2253 | return result; |
15d123c9 | 2254 | } |
56e3f43c | 2255 | |
6640a367 | 2256 | return {}; |
3a40aaa0 UW |
2257 | } |
2258 | ||
19630284 JB |
2259 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2260 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2261 | depending on whether or not we want to search global symbols or |
2262 | static symbols. */ | |
2263 | ||
d12307c1 | 2264 | static struct block_symbol |
c32e6a04 CB |
2265 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2266 | enum block_enum block_index, const char *name, | |
2267 | const domain_enum domain) | |
19630284 | 2268 | { |
ba715d7f JK |
2269 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2270 | ||
cc485e62 DE |
2271 | if (symbol_lookup_debug > 1) |
2272 | { | |
2273 | fprintf_unfiltered (gdb_stdlog, | |
2274 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2275 | objfile_debug_name (objfile), | |
2276 | block_index == GLOBAL_BLOCK | |
2277 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2278 | name, domain_name (domain)); | |
2279 | } | |
2280 | ||
b669c953 | 2281 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2282 | { |
43f3e411 DE |
2283 | const struct blockvector *bv; |
2284 | const struct block *block; | |
d12307c1 | 2285 | struct block_symbol result; |
43f3e411 DE |
2286 | |
2287 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2288 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2289 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2290 | result.block = block; | |
2291 | if (result.symbol != NULL) | |
a743abeb | 2292 | { |
cc485e62 DE |
2293 | if (symbol_lookup_debug > 1) |
2294 | { | |
2295 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2296 | host_address_to_string (result.symbol), |
cc485e62 DE |
2297 | host_address_to_string (block)); |
2298 | } | |
d12307c1 PMR |
2299 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2300 | return result; | |
2301 | ||
a743abeb DE |
2302 | } |
2303 | } | |
19630284 | 2304 | |
cc485e62 DE |
2305 | if (symbol_lookup_debug > 1) |
2306 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2307 | return {}; |
19630284 JB |
2308 | } |
2309 | ||
74016e12 | 2310 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2311 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2312 | and all associated separate debug objfiles. |
2313 | ||
2314 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2315 | because the outer loop will cause them to be searched too. This case is | |
2316 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2317 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2318 | |
d12307c1 | 2319 | static struct block_symbol |
422d65e7 DE |
2320 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2321 | const char *linkage_name, | |
2322 | domain_enum domain) | |
2323 | { | |
2324 | enum language lang = current_language->la_language; | |
e9ad22ee | 2325 | struct objfile *main_objfile; |
422d65e7 | 2326 | |
2f408ecb PA |
2327 | demangle_result_storage storage; |
2328 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2329 | ||
422d65e7 DE |
2330 | if (objfile->separate_debug_objfile_backlink) |
2331 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2332 | else | |
2333 | main_objfile = objfile; | |
2334 | ||
bde09ab7 | 2335 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2336 | { |
d12307c1 PMR |
2337 | struct block_symbol result; |
2338 | ||
2339 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2340 | modified_name, domain); | |
2341 | if (result.symbol == NULL) | |
2342 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2343 | modified_name, domain); | |
2344 | if (result.symbol != NULL) | |
2f408ecb | 2345 | return result; |
422d65e7 DE |
2346 | } |
2347 | ||
6640a367 | 2348 | return {}; |
422d65e7 DE |
2349 | } |
2350 | ||
08c23b0d TT |
2351 | /* A helper function that throws an exception when a symbol was found |
2352 | in a psymtab but not in a symtab. */ | |
2353 | ||
2354 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2355 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2356 | struct compunit_symtab *cust) |
08c23b0d TT |
2357 | { |
2358 | error (_("\ | |
2359 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2360 | %s may be an inlined function, or may be a template function\n \ | |
2361 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2362 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2363 | name, |
2364 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2365 | name, name); | |
08c23b0d TT |
2366 | } |
2367 | ||
74016e12 DE |
2368 | /* A helper function for various lookup routines that interfaces with |
2369 | the "quick" symbol table functions. */ | |
8155455b | 2370 | |
d12307c1 | 2371 | static struct block_symbol |
ddbcedf5 CB |
2372 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2373 | enum block_enum block_index, const char *name, | |
2374 | const domain_enum domain) | |
8155455b | 2375 | { |
43f3e411 | 2376 | struct compunit_symtab *cust; |
346d1dfe | 2377 | const struct blockvector *bv; |
8155455b | 2378 | const struct block *block; |
d12307c1 | 2379 | struct block_symbol result; |
8155455b | 2380 | |
ccefe4c4 | 2381 | if (!objfile->sf) |
6640a367 | 2382 | return {}; |
cc485e62 DE |
2383 | |
2384 | if (symbol_lookup_debug > 1) | |
2385 | { | |
2386 | fprintf_unfiltered (gdb_stdlog, | |
2387 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2388 | objfile_debug_name (objfile), | |
2389 | block_index == GLOBAL_BLOCK | |
2390 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2391 | name, domain_name (domain)); | |
2392 | } | |
2393 | ||
43f3e411 DE |
2394 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2395 | if (cust == NULL) | |
cc485e62 DE |
2396 | { |
2397 | if (symbol_lookup_debug > 1) | |
2398 | { | |
2399 | fprintf_unfiltered (gdb_stdlog, | |
2400 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2401 | } | |
6640a367 | 2402 | return {}; |
cc485e62 | 2403 | } |
8155455b | 2404 | |
43f3e411 | 2405 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2406 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2407 | result.symbol = block_lookup_symbol (block, name, |
2408 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2409 | if (result.symbol == NULL) |
43f3e411 | 2410 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2411 | |
2412 | if (symbol_lookup_debug > 1) | |
2413 | { | |
2414 | fprintf_unfiltered (gdb_stdlog, | |
2415 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2416 | host_address_to_string (result.symbol), |
cc485e62 DE |
2417 | host_address_to_string (block)); |
2418 | } | |
2419 | ||
d12307c1 PMR |
2420 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2421 | result.block = block; | |
2422 | return result; | |
8155455b DC |
2423 | } |
2424 | ||
cf901d3b | 2425 | /* See symtab.h. */ |
5f9a71c3 | 2426 | |
d12307c1 | 2427 | struct block_symbol |
f606139a DE |
2428 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2429 | const char *name, | |
5f9a71c3 | 2430 | const struct block *block, |
21b556f4 | 2431 | const domain_enum domain) |
5f9a71c3 | 2432 | { |
d12307c1 | 2433 | struct block_symbol result; |
5f9a71c3 | 2434 | |
d9060ba6 DE |
2435 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2436 | the current objfile. Searching the current objfile first is useful | |
2437 | for both matching user expectations as well as performance. */ | |
2438 | ||
d12307c1 PMR |
2439 | result = lookup_symbol_in_static_block (name, block, domain); |
2440 | if (result.symbol != NULL) | |
2441 | return result; | |
5f9a71c3 | 2442 | |
1994afbf DE |
2443 | /* If we didn't find a definition for a builtin type in the static block, |
2444 | search for it now. This is actually the right thing to do and can be | |
2445 | a massive performance win. E.g., when debugging a program with lots of | |
2446 | shared libraries we could search all of them only to find out the | |
2447 | builtin type isn't defined in any of them. This is common for types | |
2448 | like "void". */ | |
2449 | if (domain == VAR_DOMAIN) | |
2450 | { | |
2451 | struct gdbarch *gdbarch; | |
2452 | ||
2453 | if (block == NULL) | |
2454 | gdbarch = target_gdbarch (); | |
2455 | else | |
2456 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2457 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2458 | gdbarch, name); | |
2459 | result.block = NULL; | |
2460 | if (result.symbol != NULL) | |
2461 | return result; | |
1994afbf DE |
2462 | } |
2463 | ||
08724ab7 | 2464 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2465 | } |
2466 | ||
cf901d3b | 2467 | /* See symtab.h. */ |
5f9a71c3 | 2468 | |
d12307c1 | 2469 | struct block_symbol |
24d864bb DE |
2470 | lookup_symbol_in_static_block (const char *name, |
2471 | const struct block *block, | |
2472 | const domain_enum domain) | |
5f9a71c3 DC |
2473 | { |
2474 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2475 | struct symbol *sym; |
5f9a71c3 | 2476 | |
cc485e62 | 2477 | if (static_block == NULL) |
6640a367 | 2478 | return {}; |
cc485e62 DE |
2479 | |
2480 | if (symbol_lookup_debug) | |
2481 | { | |
2482 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2483 | ||
2484 | fprintf_unfiltered (gdb_stdlog, | |
2485 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2486 | " %s)\n", | |
2487 | name, | |
2488 | host_address_to_string (block), | |
2489 | objfile_debug_name (objfile), | |
2490 | domain_name (domain)); | |
2491 | } | |
2492 | ||
de63c46b PA |
2493 | sym = lookup_symbol_in_block (name, |
2494 | symbol_name_match_type::FULL, | |
2495 | static_block, domain); | |
cc485e62 DE |
2496 | if (symbol_lookup_debug) |
2497 | { | |
2498 | fprintf_unfiltered (gdb_stdlog, | |
2499 | "lookup_symbol_in_static_block (...) = %s\n", | |
2500 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2501 | } | |
d12307c1 | 2502 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2503 | } |
2504 | ||
af3768e9 DE |
2505 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2506 | 1) First search expanded symtabs, and if not found | |
2507 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2508 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2509 | ||
d12307c1 | 2510 | static struct block_symbol |
c32e6a04 | 2511 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2512 | const char *name, const domain_enum domain) |
2513 | { | |
d12307c1 | 2514 | struct block_symbol result; |
af3768e9 | 2515 | |
c32e6a04 CB |
2516 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2517 | ||
cc485e62 DE |
2518 | if (symbol_lookup_debug) |
2519 | { | |
2520 | fprintf_unfiltered (gdb_stdlog, | |
2521 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2522 | objfile_debug_name (objfile), | |
2523 | block_index == GLOBAL_BLOCK | |
2524 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2525 | name, domain_name (domain)); | |
2526 | } | |
2527 | ||
af3768e9 DE |
2528 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2529 | name, domain); | |
d12307c1 | 2530 | if (result.symbol != NULL) |
af3768e9 | 2531 | { |
cc485e62 DE |
2532 | if (symbol_lookup_debug) |
2533 | { | |
2534 | fprintf_unfiltered (gdb_stdlog, | |
2535 | "lookup_symbol_in_objfile (...) = %s" | |
2536 | " (in symtabs)\n", | |
d12307c1 | 2537 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2538 | } |
2539 | return result; | |
af3768e9 DE |
2540 | } |
2541 | ||
cc485e62 DE |
2542 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2543 | name, domain); | |
2544 | if (symbol_lookup_debug) | |
2545 | { | |
2546 | fprintf_unfiltered (gdb_stdlog, | |
2547 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2548 | result.symbol != NULL |
2549 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2550 | : "NULL", |
d12307c1 | 2551 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2552 | } |
af3768e9 DE |
2553 | return result; |
2554 | } | |
2555 | ||
19630284 JB |
2556 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2557 | ||
9aa55206 | 2558 | struct global_or_static_sym_lookup_data |
19630284 JB |
2559 | { |
2560 | /* The name of the symbol we are searching for. */ | |
2561 | const char *name; | |
2562 | ||
2563 | /* The domain to use for our search. */ | |
2564 | domain_enum domain; | |
2565 | ||
9aa55206 CB |
2566 | /* The block index in which to search. */ |
2567 | enum block_enum block_index; | |
2568 | ||
19630284 | 2569 | /* The field where the callback should store the symbol if found. |
d12307c1 PMR |
2570 | It should be initialized to {NULL, NULL} before the search is started. */ |
2571 | struct block_symbol result; | |
19630284 JB |
2572 | }; |
2573 | ||
2574 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
9aa55206 CB |
2575 | It searches by name for a symbol in the block given by BLOCK_INDEX of the |
2576 | given OBJFILE. The arguments for the search are passed via CB_DATA, which | |
2577 | in reality is a pointer to struct global_or_static_sym_lookup_data. */ | |
19630284 JB |
2578 | |
2579 | static int | |
9aa55206 CB |
2580 | lookup_symbol_global_or_static_iterator_cb (struct objfile *objfile, |
2581 | void *cb_data) | |
19630284 | 2582 | { |
9aa55206 CB |
2583 | struct global_or_static_sym_lookup_data *data = |
2584 | (struct global_or_static_sym_lookup_data *) cb_data; | |
19630284 | 2585 | |
d12307c1 PMR |
2586 | gdb_assert (data->result.symbol == NULL |
2587 | && data->result.block == NULL); | |
19630284 | 2588 | |
9aa55206 | 2589 | data->result = lookup_symbol_in_objfile (objfile, data->block_index, |
af3768e9 | 2590 | data->name, data->domain); |
19630284 JB |
2591 | |
2592 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2593 | keep going. */ | |
d12307c1 | 2594 | return (data->result.symbol != NULL); |
19630284 JB |
2595 | } |
2596 | ||
9aa55206 CB |
2597 | /* This function contains the common code of lookup_{global,static}_symbol. |
2598 | OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is | |
2599 | the objfile to start the lookup in. */ | |
5f9a71c3 | 2600 | |
9aa55206 CB |
2601 | static struct block_symbol |
2602 | lookup_global_or_static_symbol (const char *name, | |
2603 | enum block_enum block_index, | |
2604 | struct objfile *objfile, | |
2605 | const domain_enum domain) | |
5f9a71c3 | 2606 | { |
f57d2163 | 2607 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2608 | struct block_symbol result; |
9aa55206 | 2609 | struct global_or_static_sym_lookup_data lookup_data; |
f57d2163 DE |
2610 | struct block_symbol_cache *bsc; |
2611 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2612 | |
9aa55206 CB |
2613 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2614 | gdb_assert (objfile == nullptr || block_index == GLOBAL_BLOCK); | |
f57d2163 DE |
2615 | |
2616 | /* First see if we can find the symbol in the cache. | |
2617 | This works because we use the current objfile to qualify the lookup. */ | |
9aa55206 | 2618 | result = symbol_cache_lookup (cache, objfile, block_index, name, domain, |
d12307c1 PMR |
2619 | &bsc, &slot); |
2620 | if (result.symbol != NULL) | |
f57d2163 | 2621 | { |
d12307c1 | 2622 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2623 | return {}; |
d12307c1 | 2624 | return result; |
f57d2163 DE |
2625 | } |
2626 | ||
626ca2c0 | 2627 | /* Do a global search (of global blocks, heh). */ |
d12307c1 | 2628 | if (result.symbol == NULL) |
f57d2163 DE |
2629 | { |
2630 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2631 | lookup_data.name = name; | |
9aa55206 | 2632 | lookup_data.block_index = block_index; |
f57d2163 DE |
2633 | lookup_data.domain = domain; |
2634 | gdbarch_iterate_over_objfiles_in_search_order | |
2635 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
9aa55206 | 2636 | lookup_symbol_global_or_static_iterator_cb, &lookup_data, objfile); |
d12307c1 | 2637 | result = lookup_data.result; |
f57d2163 | 2638 | } |
6a3ca067 | 2639 | |
d12307c1 PMR |
2640 | if (result.symbol != NULL) |
2641 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2642 | else |
2643 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2644 | ||
d12307c1 | 2645 | return result; |
5f9a71c3 DC |
2646 | } |
2647 | ||
9aa55206 CB |
2648 | /* See symtab.h. */ |
2649 | ||
2650 | struct block_symbol | |
2651 | lookup_static_symbol (const char *name, const domain_enum domain) | |
2652 | { | |
2653 | return lookup_global_or_static_symbol (name, STATIC_BLOCK, nullptr, domain); | |
2654 | } | |
2655 | ||
2656 | /* See symtab.h. */ | |
2657 | ||
2658 | struct block_symbol | |
2659 | lookup_global_symbol (const char *name, | |
2660 | const struct block *block, | |
2661 | const domain_enum domain) | |
2662 | { | |
d3d32391 AB |
2663 | /* If a block was passed in, we want to search the corresponding |
2664 | global block first. This yields "more expected" behavior, and is | |
2665 | needed to support 'FILENAME'::VARIABLE lookups. */ | |
2666 | const struct block *global_block = block_global_block (block); | |
2667 | if (global_block != nullptr) | |
2668 | { | |
2669 | symbol *sym = lookup_symbol_in_block (name, | |
2670 | symbol_name_match_type::FULL, | |
2671 | global_block, domain); | |
2672 | if (sym != nullptr) | |
2673 | return { sym, global_block }; | |
2674 | } | |
2675 | ||
9aa55206 CB |
2676 | struct objfile *objfile = lookup_objfile_from_block (block); |
2677 | return lookup_global_or_static_symbol (name, GLOBAL_BLOCK, objfile, domain); | |
2678 | } | |
2679 | ||
ececd218 | 2680 | bool |
4186eb54 KS |
2681 | symbol_matches_domain (enum language symbol_language, |
2682 | domain_enum symbol_domain, | |
2683 | domain_enum domain) | |
2684 | { | |
2685 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2686 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2687 | if (symbol_language == language_cplus | |
2688 | || symbol_language == language_d | |
65547233 TT |
2689 | || symbol_language == language_ada |
2690 | || symbol_language == language_rust) | |
4186eb54 KS |
2691 | { |
2692 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2693 | && symbol_domain == STRUCT_DOMAIN) | |
ececd218 | 2694 | return true; |
4186eb54 KS |
2695 | } |
2696 | /* For all other languages, strict match is required. */ | |
2697 | return (symbol_domain == domain); | |
2698 | } | |
2699 | ||
cf901d3b | 2700 | /* See symtab.h. */ |
c906108c | 2701 | |
ccefe4c4 TT |
2702 | struct type * |
2703 | lookup_transparent_type (const char *name) | |
c906108c | 2704 | { |
ccefe4c4 TT |
2705 | return current_language->la_lookup_transparent_type (name); |
2706 | } | |
9af17804 | 2707 | |
ccefe4c4 TT |
2708 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2709 | "quick" symbol table functions. */ | |
357e46e7 | 2710 | |
ccefe4c4 | 2711 | static struct type * |
ddbcedf5 CB |
2712 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2713 | enum block_enum block_index, | |
ccefe4c4 TT |
2714 | const char *name) |
2715 | { | |
43f3e411 | 2716 | struct compunit_symtab *cust; |
346d1dfe | 2717 | const struct blockvector *bv; |
582942f4 | 2718 | const struct block *block; |
ccefe4c4 | 2719 | struct symbol *sym; |
c906108c | 2720 | |
ccefe4c4 TT |
2721 | if (!objfile->sf) |
2722 | return NULL; | |
43f3e411 DE |
2723 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2724 | STRUCT_DOMAIN); | |
2725 | if (cust == NULL) | |
ccefe4c4 | 2726 | return NULL; |
c906108c | 2727 | |
43f3e411 | 2728 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2729 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2730 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2731 | block_find_non_opaque_type, NULL); | |
2732 | if (sym == NULL) | |
43f3e411 | 2733 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2734 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2735 | return SYMBOL_TYPE (sym); | |
2736 | } | |
08c23b0d | 2737 | |
b2e2f908 DE |
2738 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2739 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2740 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2741 | ||
2742 | static struct type * | |
ddbcedf5 CB |
2743 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2744 | enum block_enum block_index, | |
b2e2f908 DE |
2745 | const char *name) |
2746 | { | |
b2e2f908 DE |
2747 | const struct blockvector *bv; |
2748 | const struct block *block; | |
2749 | const struct symbol *sym; | |
2750 | ||
b669c953 | 2751 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2752 | { |
2753 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2754 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2755 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2756 | block_find_non_opaque_type, NULL); | |
2757 | if (sym != NULL) | |
2758 | { | |
2759 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2760 | return SYMBOL_TYPE (sym); | |
2761 | } | |
2762 | } | |
c906108c | 2763 | |
ccefe4c4 | 2764 | return NULL; |
b368761e | 2765 | } |
c906108c | 2766 | |
b368761e DC |
2767 | /* The standard implementation of lookup_transparent_type. This code |
2768 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2769 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2770 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2771 | global blocks. */ |
c906108c SS |
2772 | |
2773 | struct type * | |
b368761e | 2774 | basic_lookup_transparent_type (const char *name) |
c906108c | 2775 | { |
ccefe4c4 | 2776 | struct type *t; |
c906108c SS |
2777 | |
2778 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2779 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2780 | of the desired name as a global, then do psymtab-to-symtab |
2781 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2782 | |
2030c079 | 2783 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2784 | { |
2785 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2786 | if (t) | |
2787 | return t; | |
2788 | } | |
c906108c | 2789 | |
2030c079 | 2790 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2791 | { |
2792 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2793 | if (t) | |
2794 | return t; | |
2795 | } | |
c906108c SS |
2796 | |
2797 | /* Now search the static file-level symbols. | |
2798 | Not strictly correct, but more useful than an error. | |
2799 | Do the symtab's first, then | |
c378eb4e | 2800 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2801 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2802 | conversion on the fly and return the found symbol. */ |
c906108c | 2803 | |
2030c079 | 2804 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2805 | { |
2806 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2807 | if (t) | |
2808 | return t; | |
2809 | } | |
c906108c | 2810 | |
2030c079 | 2811 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2812 | { |
2813 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2814 | if (t) | |
2815 | return t; | |
2816 | } | |
ccefe4c4 | 2817 | |
c906108c SS |
2818 | return (struct type *) 0; |
2819 | } | |
2820 | ||
6969f124 | 2821 | /* See symtab.h. */ |
f8eba3c6 | 2822 | |
6969f124 | 2823 | bool |
b5ec771e PA |
2824 | iterate_over_symbols (const struct block *block, |
2825 | const lookup_name_info &name, | |
f8eba3c6 | 2826 | const domain_enum domain, |
14bc53a8 | 2827 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2828 | { |
4eeaa230 DE |
2829 | struct block_iterator iter; |
2830 | struct symbol *sym; | |
f8eba3c6 | 2831 | |
358d6ab3 | 2832 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2833 | { |
4186eb54 KS |
2834 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2835 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2836 | { |
7e41c8db KS |
2837 | struct block_symbol block_sym = {sym, block}; |
2838 | ||
2839 | if (!callback (&block_sym)) | |
6969f124 | 2840 | return false; |
f8eba3c6 | 2841 | } |
f8eba3c6 | 2842 | } |
6969f124 | 2843 | return true; |
f8eba3c6 TT |
2844 | } |
2845 | ||
6a3dbf1b TT |
2846 | /* See symtab.h. */ |
2847 | ||
2848 | bool | |
2849 | iterate_over_symbols_terminated | |
2850 | (const struct block *block, | |
2851 | const lookup_name_info &name, | |
2852 | const domain_enum domain, | |
2853 | gdb::function_view<symbol_found_callback_ftype> callback) | |
2854 | { | |
2855 | if (!iterate_over_symbols (block, name, domain, callback)) | |
2856 | return false; | |
2857 | struct block_symbol block_sym = {nullptr, block}; | |
2858 | return callback (&block_sym); | |
2859 | } | |
2860 | ||
43f3e411 DE |
2861 | /* Find the compunit symtab associated with PC and SECTION. |
2862 | This will read in debug info as necessary. */ | |
c906108c | 2863 | |
43f3e411 DE |
2864 | struct compunit_symtab * |
2865 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2866 | { |
43f3e411 | 2867 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2868 | CORE_ADDR distance = 0; |
77e371c0 | 2869 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2870 | |
2871 | /* If we know that this is not a text address, return failure. This is | |
2872 | necessary because we loop based on the block's high and low code | |
2873 | addresses, which do not include the data ranges, and because | |
2874 | we call find_pc_sect_psymtab which has a similar restriction based | |
2875 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2876 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2877 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2878 | return NULL; |
c906108c SS |
2879 | |
2880 | /* Search all symtabs for the one whose file contains our address, and which | |
2881 | is the smallest of all the ones containing the address. This is designed | |
2882 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2883 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2884 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2885 | ||
2886 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2887 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2888 | been read in already via the dependency mechanism. |
2889 | It might be swifter to create several symtabs with the same name | |
2890 | like xcoff does (I'm not sure). | |
2891 | ||
2892 | It also happens for objfiles that have their functions reordered. | |
2893 | For these, the symtab we are looking for is not necessarily read in. */ | |
2894 | ||
2030c079 | 2895 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2896 | { |
b669c953 | 2897 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2898 | { |
582942f4 | 2899 | const struct block *b; |
d8aeb77f | 2900 | const struct blockvector *bv; |
43f3e411 | 2901 | |
d8aeb77f TT |
2902 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2903 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2904 | |
d8aeb77f TT |
2905 | if (BLOCK_START (b) <= pc |
2906 | && BLOCK_END (b) > pc | |
2907 | && (distance == 0 | |
2908 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2909 | { | |
2910 | /* For an objfile that has its functions reordered, | |
2911 | find_pc_psymtab will find the proper partial symbol table | |
2912 | and we simply return its corresponding symtab. */ | |
2913 | /* In order to better support objfiles that contain both | |
2914 | stabs and coff debugging info, we continue on if a psymtab | |
2915 | can't be found. */ | |
2916 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2917 | { | |
2918 | struct compunit_symtab *result; | |
2919 | ||
2920 | result | |
2921 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2922 | msymbol, | |
2923 | pc, | |
2924 | section, | |
2925 | 0); | |
2926 | if (result != NULL) | |
2927 | return result; | |
2928 | } | |
2929 | if (section != 0) | |
2930 | { | |
2931 | struct block_iterator iter; | |
2932 | struct symbol *sym = NULL; | |
c906108c | 2933 | |
d8aeb77f TT |
2934 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2935 | { | |
2936 | fixup_symbol_section (sym, obj_file); | |
2937 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2938 | sym), | |
2939 | section)) | |
2940 | break; | |
2941 | } | |
2942 | if (sym == NULL) | |
2943 | continue; /* No symbol in this symtab matches | |
2944 | section. */ | |
2945 | } | |
2946 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2947 | best_cust = cust; | |
2948 | } | |
2949 | } | |
2950 | } | |
c906108c | 2951 | |
43f3e411 DE |
2952 | if (best_cust != NULL) |
2953 | return best_cust; | |
c906108c | 2954 | |
072cabfe DE |
2955 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2956 | ||
2030c079 | 2957 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2958 | { |
2959 | struct compunit_symtab *result; | |
2960 | ||
2961 | if (!objf->sf) | |
2962 | continue; | |
2963 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2964 | msymbol, | |
2965 | pc, section, | |
2966 | 1); | |
2967 | if (result != NULL) | |
2968 | return result; | |
2969 | } | |
ccefe4c4 TT |
2970 | |
2971 | return NULL; | |
c906108c SS |
2972 | } |
2973 | ||
43f3e411 DE |
2974 | /* Find the compunit symtab associated with PC. |
2975 | This will read in debug info as necessary. | |
2976 | Backward compatibility, no section. */ | |
c906108c | 2977 | |
43f3e411 DE |
2978 | struct compunit_symtab * |
2979 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2980 | { |
43f3e411 | 2981 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2982 | } |
71a3c369 TT |
2983 | |
2984 | /* See symtab.h. */ | |
2985 | ||
2986 | struct symbol * | |
2987 | find_symbol_at_address (CORE_ADDR address) | |
2988 | { | |
2030c079 | 2989 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2990 | { |
2991 | if (objfile->sf == NULL | |
2992 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
2993 | continue; | |
71a3c369 | 2994 | |
aed57c53 TT |
2995 | struct compunit_symtab *symtab |
2996 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
2997 | if (symtab != NULL) | |
2998 | { | |
2999 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 3000 | |
aed57c53 | 3001 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 3002 | { |
582942f4 | 3003 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
3004 | struct block_iterator iter; |
3005 | struct symbol *sym; | |
3006 | ||
3007 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3008 | { | |
3009 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3010 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3011 | return sym; | |
3012 | } | |
71a3c369 | 3013 | } |
aed57c53 TT |
3014 | } |
3015 | } | |
71a3c369 TT |
3016 | |
3017 | return NULL; | |
3018 | } | |
3019 | ||
c906108c | 3020 | \f |
c5aa993b | 3021 | |
7e73cedf | 3022 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3023 | Return a structure containing a symtab pointer, a line number, |
3024 | and a pc range for the entire source line. | |
3025 | The value's .pc field is NOT the specified pc. | |
3026 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3027 | use the line that ends there. Otherwise, in that case, the line | |
3028 | that begins there is used. */ | |
3029 | ||
3030 | /* The big complication here is that a line may start in one file, and end just | |
3031 | before the start of another file. This usually occurs when you #include | |
3032 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3033 | range, we must search all symtabs associated with this compilation unit, and | |
3034 | find the one whose first PC is closer than that of the next line in this | |
3035 | symtab. */ | |
3036 | ||
c906108c | 3037 | struct symtab_and_line |
714835d5 | 3038 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3039 | { |
43f3e411 | 3040 | struct compunit_symtab *cust; |
52f0bd74 AC |
3041 | struct linetable *l; |
3042 | int len; | |
52f0bd74 | 3043 | struct linetable_entry *item; |
346d1dfe | 3044 | const struct blockvector *bv; |
7cbd4a93 | 3045 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3046 | |
3047 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3048 | ||
3049 | struct linetable_entry *best = NULL; | |
3050 | CORE_ADDR best_end = 0; | |
3051 | struct symtab *best_symtab = 0; | |
3052 | ||
3053 | /* Store here the first line number | |
3054 | of a file which contains the line at the smallest pc after PC. | |
3055 | If we don't find a line whose range contains PC, | |
3056 | we will use a line one less than this, | |
3057 | with a range from the start of that file to the first line's pc. */ | |
3058 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3059 | |
3060 | /* Info on best line seen in this file. */ | |
3061 | ||
3062 | struct linetable_entry *prev; | |
3063 | ||
3064 | /* If this pc is not from the current frame, | |
3065 | it is the address of the end of a call instruction. | |
3066 | Quite likely that is the start of the following statement. | |
3067 | But what we want is the statement containing the instruction. | |
3068 | Fudge the pc to make sure we get that. */ | |
3069 | ||
b77b1eb7 JB |
3070 | /* It's tempting to assume that, if we can't find debugging info for |
3071 | any function enclosing PC, that we shouldn't search for line | |
3072 | number info, either. However, GAS can emit line number info for | |
3073 | assembly files --- very helpful when debugging hand-written | |
3074 | assembly code. In such a case, we'd have no debug info for the | |
3075 | function, but we would have line info. */ | |
648f4f79 | 3076 | |
c906108c SS |
3077 | if (notcurrent) |
3078 | pc -= 1; | |
3079 | ||
c5aa993b | 3080 | /* elz: added this because this function returned the wrong |
c906108c | 3081 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3082 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3083 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3084 | taken to be the one of the line before the pc. */ |
3085 | ||
c906108c | 3086 | /* RT: Further explanation: |
c5aa993b | 3087 | |
c906108c SS |
3088 | * We have stubs (trampolines) inserted between procedures. |
3089 | * | |
3090 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3091 | * exists in the main image. | |
3092 | * | |
3093 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3094 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3095 | * the others appear as text. E.g.: |
3096 | * | |
9af17804 | 3097 | * Minimal symbol table for main image |
c906108c SS |
3098 | * main: code for main (text symbol) |
3099 | * shr1: stub (trampoline symbol) | |
3100 | * foo: code for foo (text symbol) | |
3101 | * ... | |
3102 | * Minimal symbol table for "shr1" image: | |
3103 | * ... | |
3104 | * shr1: code for shr1 (text symbol) | |
3105 | * ... | |
3106 | * | |
3107 | * So the code below is trying to detect if we are in the stub | |
3108 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3109 | * and if found, do the symbolization from the real-code address | |
3110 | * rather than the stub address. | |
3111 | * | |
3112 | * Assumptions being made about the minimal symbol table: | |
3113 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3114 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3115 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3116 | * symbol (the "foo" text symbol for example) and will not |
3117 | * return the trampoline. | |
3118 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3119 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3120 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3121 | * check for the address being the same, to avoid an |
3122 | * infinite recursion. | |
3123 | */ | |
c5aa993b | 3124 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3125 | if (msymbol.minsym != NULL) |
3126 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3127 | { |
77e371c0 | 3128 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3129 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3130 | NULL); |
3131 | ||
3132 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3133 | /* I eliminated this warning since it is coming out |
3134 | * in the following situation: | |
3135 | * gdb shmain // test program with shared libraries | |
3136 | * (gdb) break shr1 // function in shared lib | |
3137 | * Warning: In stub for ... | |
9af17804 | 3138 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3139 | * so of course we can't find the real func/line info, |
3140 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3141 | * So I commented out the warning. RT */ |
3e43a32a | 3142 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3143 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3144 | ; | |
c5aa993b | 3145 | /* fall through */ |
77e371c0 TT |
3146 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3147 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3148 | /* Avoid infinite recursion */ |
c378eb4e | 3149 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3150 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3151 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3152 | ; | |
c5aa993b JM |
3153 | /* fall through */ |
3154 | else | |
77e371c0 | 3155 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3156 | } |
c906108c | 3157 | |
51abb421 PA |
3158 | symtab_and_line val; |
3159 | val.pspace = current_program_space; | |
c906108c | 3160 | |
43f3e411 DE |
3161 | cust = find_pc_sect_compunit_symtab (pc, section); |
3162 | if (cust == NULL) | |
c906108c | 3163 | { |
c378eb4e | 3164 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3165 | if (notcurrent) |
3166 | pc++; | |
3167 | val.pc = pc; | |
3168 | return val; | |
3169 | } | |
3170 | ||
43f3e411 | 3171 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3172 | |
3173 | /* Look at all the symtabs that share this blockvector. | |
3174 | They all have the same apriori range, that we found was right; | |
3175 | but they have different line tables. */ | |
3176 | ||
5accd1a0 | 3177 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3178 | { |
3179 | /* Find the best line in this symtab. */ | |
43f3e411 | 3180 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3181 | if (!l) |
c5aa993b | 3182 | continue; |
c906108c SS |
3183 | len = l->nitems; |
3184 | if (len <= 0) | |
3185 | { | |
3186 | /* I think len can be zero if the symtab lacks line numbers | |
3187 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3188 | I'm not sure which, and maybe it depends on the symbol | |
3189 | reader). */ | |
3190 | continue; | |
3191 | } | |
3192 | ||
3193 | prev = NULL; | |
c378eb4e | 3194 | item = l->item; /* Get first line info. */ |
c906108c SS |
3195 | |
3196 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3197 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3198 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3199 | alt = item; |
c906108c | 3200 | |
b926417a | 3201 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3202 | const struct linetable_entry & lhs)->bool |
3203 | { | |
b926417a | 3204 | return comp_pc < lhs.pc; |
7cbe16e9 | 3205 | }; |
c906108c | 3206 | |
7cbe16e9 SR |
3207 | struct linetable_entry *first = item; |
3208 | struct linetable_entry *last = item + len; | |
3209 | item = std::upper_bound (first, last, pc, pc_compare); | |
3210 | if (item != first) | |
3211 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3212 | |
3213 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3214 | item points at the next line. If we ran off the end of the linetable |
3215 | (pc >= start of the last line), then prev == item. If pc < start of | |
3216 | the first line, prev will not be set. */ | |
c906108c SS |
3217 | |
3218 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3219 | If so, record this file, and its best line, as best so far. Don't |
3220 | save prev if it represents the end of a function (i.e. line number | |
3221 | 0) instead of a real line. */ | |
c906108c | 3222 | |
083ae935 | 3223 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3224 | { |
3225 | best = prev; | |
43f3e411 | 3226 | best_symtab = iter_s; |
25d53da1 KB |
3227 | |
3228 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3229 | if (best_end <= best->pc) | |
3230 | best_end = 0; | |
c906108c | 3231 | } |
25d53da1 KB |
3232 | |
3233 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3234 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3235 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3236 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3237 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3238 | best_end = item->pc; |
c906108c SS |
3239 | } |
3240 | ||
3241 | if (!best_symtab) | |
3242 | { | |
e86e87f7 DJ |
3243 | /* If we didn't find any line number info, just return zeros. |
3244 | We used to return alt->line - 1 here, but that could be | |
3245 | anywhere; if we don't have line number info for this PC, | |
3246 | don't make some up. */ | |
3247 | val.pc = pc; | |
c906108c | 3248 | } |
e8717518 FF |
3249 | else if (best->line == 0) |
3250 | { | |
3251 | /* If our best fit is in a range of PC's for which no line | |
3252 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3253 | find any valid line information. */ |
e8717518 FF |
3254 | val.pc = pc; |
3255 | } | |
c906108c SS |
3256 | else |
3257 | { | |
3258 | val.symtab = best_symtab; | |
3259 | val.line = best->line; | |
3260 | val.pc = best->pc; | |
3261 | if (best_end && (!alt || best_end < alt->pc)) | |
3262 | val.end = best_end; | |
3263 | else if (alt) | |
3264 | val.end = alt->pc; | |
3265 | else | |
3266 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3267 | } | |
3268 | val.section = section; | |
3269 | return val; | |
3270 | } | |
3271 | ||
c378eb4e | 3272 | /* Backward compatibility (no section). */ |
c906108c SS |
3273 | |
3274 | struct symtab_and_line | |
fba45db2 | 3275 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3276 | { |
714835d5 | 3277 | struct obj_section *section; |
c906108c SS |
3278 | |
3279 | section = find_pc_overlay (pc); | |
3280 | if (pc_in_unmapped_range (pc, section)) | |
3281 | pc = overlay_mapped_address (pc, section); | |
3282 | return find_pc_sect_line (pc, section, notcurrent); | |
3283 | } | |
34248c3a DE |
3284 | |
3285 | /* See symtab.h. */ | |
3286 | ||
3287 | struct symtab * | |
3288 | find_pc_line_symtab (CORE_ADDR pc) | |
3289 | { | |
3290 | struct symtab_and_line sal; | |
3291 | ||
3292 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3293 | There are currently no callers that ever pass non-zero. */ | |
3294 | sal = find_pc_line (pc, 0); | |
3295 | return sal.symtab; | |
3296 | } | |
c906108c | 3297 | \f |
c906108c SS |
3298 | /* Find line number LINE in any symtab whose name is the same as |
3299 | SYMTAB. | |
3300 | ||
3301 | If found, return the symtab that contains the linetable in which it was | |
3302 | found, set *INDEX to the index in the linetable of the best entry | |
ececd218 | 3303 | found, and set *EXACT_MATCH to true if the value returned is an |
c906108c SS |
3304 | exact match. |
3305 | ||
3306 | If not found, return NULL. */ | |
3307 | ||
50641945 | 3308 | struct symtab * |
5accd1a0 | 3309 | find_line_symtab (struct symtab *sym_tab, int line, |
ececd218 | 3310 | int *index, bool *exact_match) |
c906108c | 3311 | { |
6f43c46f | 3312 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3313 | |
3314 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3315 | so far seen. */ | |
3316 | ||
3317 | int best_index; | |
3318 | struct linetable *best_linetable; | |
3319 | struct symtab *best_symtab; | |
3320 | ||
3321 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3322 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3323 | best_symtab = sym_tab; | |
f8eba3c6 | 3324 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3325 | if (best_index < 0 || !exact) |
3326 | { | |
3327 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3328 | another symtab with the same name. In the case of xcoff, |
3329 | multiple csects for one source file (produced by IBM's FORTRAN | |
3330 | compiler) produce multiple symtabs (this is unavoidable | |
3331 | assuming csects can be at arbitrary places in memory and that | |
3332 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3333 | |
3334 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3335 | or 0 if none has been seen so far. |
3336 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3337 | int best; |
3338 | ||
c906108c SS |
3339 | if (best_index >= 0) |
3340 | best = best_linetable->item[best_index].line; | |
3341 | else | |
3342 | best = 0; | |
3343 | ||
2030c079 | 3344 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3345 | { |
3346 | if (objfile->sf) | |
3347 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3348 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3349 | } |
51432cca | 3350 | |
2030c079 | 3351 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3352 | { |
b669c953 | 3353 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3354 | { |
3355 | for (symtab *s : compunit_filetabs (cu)) | |
3356 | { | |
3357 | struct linetable *l; | |
3358 | int ind; | |
3359 | ||
3360 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3361 | continue; | |
3362 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3363 | symtab_to_fullname (s)) != 0) | |
3364 | continue; | |
3365 | l = SYMTAB_LINETABLE (s); | |
3366 | ind = find_line_common (l, line, &exact, 0); | |
3367 | if (ind >= 0) | |
3368 | { | |
3369 | if (exact) | |
3370 | { | |
3371 | best_index = ind; | |
3372 | best_linetable = l; | |
3373 | best_symtab = s; | |
3374 | goto done; | |
3375 | } | |
3376 | if (best == 0 || l->item[ind].line < best) | |
3377 | { | |
3378 | best = l->item[ind].line; | |
3379 | best_index = ind; | |
3380 | best_linetable = l; | |
3381 | best_symtab = s; | |
3382 | } | |
3383 | } | |
3384 | } | |
3385 | } | |
3386 | } | |
c906108c | 3387 | } |
c5aa993b | 3388 | done: |
c906108c SS |
3389 | if (best_index < 0) |
3390 | return NULL; | |
3391 | ||
3392 | if (index) | |
3393 | *index = best_index; | |
3394 | if (exact_match) | |
ececd218 | 3395 | *exact_match = (exact != 0); |
c906108c SS |
3396 | |
3397 | return best_symtab; | |
3398 | } | |
f8eba3c6 TT |
3399 | |
3400 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3401 | exactly match LINE. Returns an empty vector if there are no exact |
3402 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3403 | |
67d89901 | 3404 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3405 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3406 | struct linetable_entry **best_item) | |
3407 | { | |
c656bca5 | 3408 | int start = 0; |
67d89901 | 3409 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3410 | |
3411 | /* First, collect all the PCs that are at this line. */ | |
3412 | while (1) | |
3413 | { | |
3414 | int was_exact; | |
3415 | int idx; | |
3416 | ||
8435453b DE |
3417 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3418 | start); | |
f8eba3c6 TT |
3419 | if (idx < 0) |
3420 | break; | |
3421 | ||
3422 | if (!was_exact) | |
3423 | { | |
8435453b | 3424 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3425 | |
3426 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3427 | *best_item = item; | |
3428 | ||
3429 | break; | |
3430 | } | |
3431 | ||
67d89901 | 3432 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3433 | start = idx + 1; |
3434 | } | |
3435 | ||
3436 | return result; | |
3437 | } | |
3438 | ||
c906108c SS |
3439 | \f |
3440 | /* Set the PC value for a given source file and line number and return true. | |
ececd218 | 3441 | Returns false for invalid line number (and sets the PC to 0). |
c906108c SS |
3442 | The source file is specified with a struct symtab. */ |
3443 | ||
ececd218 | 3444 | bool |
fba45db2 | 3445 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3446 | { |
3447 | struct linetable *l; | |
3448 | int ind; | |
3449 | ||
3450 | *pc = 0; | |
3451 | if (symtab == 0) | |
ececd218 | 3452 | return false; |
c906108c SS |
3453 | |
3454 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3455 | if (symtab != NULL) | |
3456 | { | |
8435453b | 3457 | l = SYMTAB_LINETABLE (symtab); |
c906108c | 3458 | *pc = l->item[ind].pc; |
ececd218 | 3459 | return true; |
c906108c SS |
3460 | } |
3461 | else | |
ececd218 | 3462 | return false; |
c906108c SS |
3463 | } |
3464 | ||
3465 | /* Find the range of pc values in a line. | |
3466 | Store the starting pc of the line into *STARTPTR | |
3467 | and the ending pc (start of next line) into *ENDPTR. | |
ececd218 CB |
3468 | Returns true to indicate success. |
3469 | Returns false if could not find the specified line. */ | |
c906108c | 3470 | |
ececd218 | 3471 | bool |
fba45db2 KB |
3472 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3473 | CORE_ADDR *endptr) | |
c906108c SS |
3474 | { |
3475 | CORE_ADDR startaddr; | |
3476 | struct symtab_and_line found_sal; | |
3477 | ||
3478 | startaddr = sal.pc; | |
c5aa993b | 3479 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
ececd218 | 3480 | return false; |
c906108c SS |
3481 | |
3482 | /* This whole function is based on address. For example, if line 10 has | |
3483 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3484 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3485 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3486 | This also insures that we never give a range like "starts at 0x134 | |
3487 | and ends at 0x12c". */ | |
3488 | ||
3489 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3490 | if (found_sal.line != sal.line) | |
3491 | { | |
3492 | /* The specified line (sal) has zero bytes. */ | |
3493 | *startptr = found_sal.pc; | |
3494 | *endptr = found_sal.pc; | |
3495 | } | |
3496 | else | |
3497 | { | |
3498 | *startptr = found_sal.pc; | |
3499 | *endptr = found_sal.end; | |
3500 | } | |
ececd218 | 3501 | return true; |
c906108c SS |
3502 | } |
3503 | ||
3504 | /* Given a line table and a line number, return the index into the line | |
3505 | table for the pc of the nearest line whose number is >= the specified one. | |
3506 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3507 | START is the index at which to start searching the line table. |
c906108c SS |
3508 | |
3509 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3510 | ||
3511 | static int | |
aa1ee363 | 3512 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3513 | int *exact_match, int start) |
c906108c | 3514 | { |
52f0bd74 AC |
3515 | int i; |
3516 | int len; | |
c906108c SS |
3517 | |
3518 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3519 | or 0 if none has been seen so far. | |
3520 | BEST_INDEX identifies the item for it. */ | |
3521 | ||
3522 | int best_index = -1; | |
3523 | int best = 0; | |
3524 | ||
b7589f7d DJ |
3525 | *exact_match = 0; |
3526 | ||
c906108c SS |
3527 | if (lineno <= 0) |
3528 | return -1; | |
3529 | if (l == 0) | |
3530 | return -1; | |
3531 | ||
3532 | len = l->nitems; | |
f8eba3c6 | 3533 | for (i = start; i < len; i++) |
c906108c | 3534 | { |
aa1ee363 | 3535 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3536 | |
3537 | if (item->line == lineno) | |
3538 | { | |
3539 | /* Return the first (lowest address) entry which matches. */ | |
3540 | *exact_match = 1; | |
3541 | return i; | |
3542 | } | |
3543 | ||
3544 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3545 | { | |
3546 | best = item->line; | |
3547 | best_index = i; | |
3548 | } | |
3549 | } | |
3550 | ||
3551 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3552 | return best_index; |
3553 | } | |
3554 | ||
ececd218 | 3555 | bool |
fba45db2 | 3556 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3557 | { |
3558 | struct symtab_and_line sal; | |
433759f7 | 3559 | |
c906108c SS |
3560 | sal = find_pc_line (pc, 0); |
3561 | *startptr = sal.pc; | |
3562 | *endptr = sal.end; | |
3563 | return sal.symtab != 0; | |
3564 | } | |
3565 | ||
cd2bb709 PA |
3566 | /* Helper for find_function_start_sal. Does most of the work, except |
3567 | setting the sal's symbol. */ | |
aab2f208 | 3568 | |
cd2bb709 PA |
3569 | static symtab_and_line |
3570 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3571 | bool funfirstline) | |
aab2f208 | 3572 | { |
42ddae10 | 3573 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3574 | |
6e22494e JK |
3575 | if (funfirstline && sal.symtab != NULL |
3576 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3577 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3578 | { | |
42ddae10 | 3579 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3580 | |
42ddae10 | 3581 | sal.pc = func_addr; |
141c5cc4 JK |
3582 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3583 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3584 | return sal; |
3585 | } | |
3586 | ||
aab2f208 | 3587 | /* We always should have a line for the function start address. |
42ddae10 | 3588 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3589 | just the PC and hope that skip_prologue_sal (if requested) |
3590 | can find a line number for after the prologue. */ | |
42ddae10 | 3591 | if (sal.pc < func_addr) |
aab2f208 | 3592 | { |
51abb421 | 3593 | sal = {}; |
aab2f208 | 3594 | sal.pspace = current_program_space; |
42ddae10 | 3595 | sal.pc = func_addr; |
08be3fe3 | 3596 | sal.section = section; |
aab2f208 DE |
3597 | } |
3598 | ||
3599 | if (funfirstline) | |
3600 | skip_prologue_sal (&sal); | |
3601 | ||
3602 | return sal; | |
3603 | } | |
3604 | ||
42ddae10 PA |
3605 | /* See symtab.h. */ |
3606 | ||
cd2bb709 PA |
3607 | symtab_and_line |
3608 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3609 | bool funfirstline) | |
3610 | { | |
3611 | symtab_and_line sal | |
3612 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3613 | ||
3614 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3615 | the symtab and linenumber, but not a symbol. Fill in the | |
3616 | function symbol too. */ | |
3617 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3618 | ||
3619 | return sal; | |
3620 | } | |
3621 | ||
3622 | /* See symtab.h. */ | |
3623 | ||
42ddae10 PA |
3624 | symtab_and_line |
3625 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3626 | { | |
3627 | fixup_symbol_section (sym, NULL); | |
3628 | symtab_and_line sal | |
2b1ffcfd | 3629 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3630 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3631 | funfirstline); | |
42ddae10 PA |
3632 | sal.symbol = sym; |
3633 | return sal; | |
3634 | } | |
3635 | ||
3636 | ||
8c7a1ee8 EZ |
3637 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3638 | address for that function that has an entry in SYMTAB's line info | |
3639 | table. If such an entry cannot be found, return FUNC_ADDR | |
3640 | unaltered. */ | |
eca864fe | 3641 | |
70221824 | 3642 | static CORE_ADDR |
8c7a1ee8 EZ |
3643 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3644 | { | |
3645 | CORE_ADDR func_start, func_end; | |
3646 | struct linetable *l; | |
952a6d41 | 3647 | int i; |
8c7a1ee8 EZ |
3648 | |
3649 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3650 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3651 | if (l == NULL) |
3652 | return func_addr; | |
3653 | ||
3654 | /* Get the range for the function's PC values, or give up if we | |
3655 | cannot, for some reason. */ | |
3656 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3657 | return func_addr; | |
3658 | ||
3659 | /* Linetable entries are ordered by PC values, see the commentary in | |
3660 | symtab.h where `struct linetable' is defined. Thus, the first | |
3661 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3662 | address we are looking for. */ | |
3663 | for (i = 0; i < l->nitems; i++) | |
3664 | { | |
3665 | struct linetable_entry *item = &(l->item[i]); | |
3666 | ||
3667 | /* Don't use line numbers of zero, they mark special entries in | |
3668 | the table. See the commentary on symtab.h before the | |
3669 | definition of struct linetable. */ | |
3670 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3671 | return item->pc; | |
3672 | } | |
3673 | ||
3674 | return func_addr; | |
3675 | } | |
3676 | ||
059acae7 UW |
3677 | /* Adjust SAL to the first instruction past the function prologue. |
3678 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3679 | If the line number was explicitly specified then the SAL can still be |
3680 | updated, unless the language for SAL is assembler, in which case the SAL | |
3681 | will be left unchanged. | |
3682 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3683 | |
059acae7 UW |
3684 | void |
3685 | skip_prologue_sal (struct symtab_and_line *sal) | |
3686 | { | |
3687 | struct symbol *sym; | |
3688 | struct symtab_and_line start_sal; | |
8be455d7 | 3689 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3690 | struct obj_section *section; |
3691 | const char *name; | |
3692 | struct objfile *objfile; | |
3693 | struct gdbarch *gdbarch; | |
3977b71f | 3694 | const struct block *b, *function_block; |
8be455d7 | 3695 | int force_skip, skip; |
c906108c | 3696 | |
a4b411d6 | 3697 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3698 | if (sal->explicit_pc) |
3699 | return; | |
6c95b8df | 3700 | |
5b0e2db4 AB |
3701 | /* In assembly code, if the user asks for a specific line then we should |
3702 | not adjust the SAL. The user already has instruction level | |
3703 | visibility in this case, so selecting a line other than one requested | |
3704 | is likely to be the wrong choice. */ | |
3705 | if (sal->symtab != nullptr | |
3706 | && sal->explicit_line | |
3707 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3708 | return; | |
3709 | ||
5ed8105e PA |
3710 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3711 | ||
059acae7 | 3712 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3713 | |
059acae7 UW |
3714 | sym = find_pc_sect_function (sal->pc, sal->section); |
3715 | if (sym != NULL) | |
bccdca4a | 3716 | { |
059acae7 UW |
3717 | fixup_symbol_section (sym, NULL); |
3718 | ||
08be3fe3 | 3719 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3720 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3721 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3722 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3723 | } |
059acae7 UW |
3724 | else |
3725 | { | |
7c7b6655 TT |
3726 | struct bound_minimal_symbol msymbol |
3727 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3728 | |
7c7b6655 | 3729 | if (msymbol.minsym == NULL) |
5ed8105e | 3730 | return; |
059acae7 | 3731 | |
7c7b6655 | 3732 | objfile = msymbol.objfile; |
77e371c0 | 3733 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3734 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3735 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3736 | } |
3737 | ||
3738 | gdbarch = get_objfile_arch (objfile); | |
3739 | ||
8be455d7 JK |
3740 | /* Process the prologue in two passes. In the first pass try to skip the |
3741 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3742 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3743 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3744 | |
8be455d7 JK |
3745 | skip = 1; |
3746 | force_skip = 1; | |
059acae7 | 3747 | |
8be455d7 JK |
3748 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3749 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3750 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3751 | if (sym != NULL |
3752 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3753 | force_skip = 0; |
059acae7 | 3754 | |
8be455d7 JK |
3755 | saved_pc = pc; |
3756 | do | |
c906108c | 3757 | { |
8be455d7 | 3758 | pc = saved_pc; |
4309257c | 3759 | |
8be455d7 JK |
3760 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3761 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3762 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3763 | pc = overlay_unmapped_address (pc, section); | |
3764 | ||
3765 | /* Skip "first line" of function (which is actually its prologue). */ | |
3766 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3767 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3768 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3769 | if (skip) |
46a62268 | 3770 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3771 | |
3772 | /* For overlays, map pc back into its mapped VMA range. */ | |
3773 | pc = overlay_mapped_address (pc, section); | |
3774 | ||
3775 | /* Calculate line number. */ | |
059acae7 | 3776 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3777 | |
3778 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3779 | line is still part of the same function. */ | |
3780 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3781 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3782 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3783 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3784 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3785 | { |
3786 | /* First pc of next line */ | |
3787 | pc = start_sal.end; | |
3788 | /* Recalculate the line number (might not be N+1). */ | |
3789 | start_sal = find_pc_sect_line (pc, section, 0); | |
3790 | } | |
3791 | ||
3792 | /* On targets with executable formats that don't have a concept of | |
3793 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3794 | to `__main' in `main' between the prologue and before user | |
3795 | code. */ | |
3796 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3797 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3798 | { |
3799 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3800 | /* Recalculate the line number (might not be N+1). */ | |
3801 | start_sal = find_pc_sect_line (pc, section, 0); | |
3802 | force_skip = 1; | |
3803 | } | |
4309257c | 3804 | } |
8be455d7 | 3805 | while (!force_skip && skip--); |
4309257c | 3806 | |
8c7a1ee8 EZ |
3807 | /* If we still don't have a valid source line, try to find the first |
3808 | PC in the lineinfo table that belongs to the same function. This | |
3809 | happens with COFF debug info, which does not seem to have an | |
3810 | entry in lineinfo table for the code after the prologue which has | |
3811 | no direct relation to source. For example, this was found to be | |
3812 | the case with the DJGPP target using "gcc -gcoff" when the | |
3813 | compiler inserted code after the prologue to make sure the stack | |
3814 | is aligned. */ | |
8be455d7 | 3815 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3816 | { |
08be3fe3 | 3817 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3818 | /* Recalculate the line number. */ |
059acae7 | 3819 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3820 | } |
3821 | ||
059acae7 UW |
3822 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3823 | forward SAL to the end of the prologue. */ | |
3824 | if (sal->pc >= pc) | |
3825 | return; | |
3826 | ||
3827 | sal->pc = pc; | |
3828 | sal->section = section; | |
059acae7 UW |
3829 | sal->symtab = start_sal.symtab; |
3830 | sal->line = start_sal.line; | |
3831 | sal->end = start_sal.end; | |
c906108c | 3832 | |
edb3359d DJ |
3833 | /* Check if we are now inside an inlined function. If we can, |
3834 | use the call site of the function instead. */ | |
059acae7 | 3835 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3836 | function_block = NULL; |
3837 | while (b != NULL) | |
3838 | { | |
3839 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3840 | function_block = b; | |
3841 | else if (BLOCK_FUNCTION (b) != NULL) | |
3842 | break; | |
3843 | b = BLOCK_SUPERBLOCK (b); | |
3844 | } | |
3845 | if (function_block != NULL | |
3846 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3847 | { | |
059acae7 | 3848 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3849 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3850 | } |
c906108c | 3851 | } |
50641945 | 3852 | |
f1f58506 DE |
3853 | /* Given PC at the function's start address, attempt to find the |
3854 | prologue end using SAL information. Return zero if the skip fails. | |
3855 | ||
3856 | A non-optimized prologue traditionally has one SAL for the function | |
3857 | and a second for the function body. A single line function has | |
3858 | them both pointing at the same line. | |
3859 | ||
3860 | An optimized prologue is similar but the prologue may contain | |
3861 | instructions (SALs) from the instruction body. Need to skip those | |
3862 | while not getting into the function body. | |
3863 | ||
3864 | The functions end point and an increasing SAL line are used as | |
3865 | indicators of the prologue's endpoint. | |
3866 | ||
3867 | This code is based on the function refine_prologue_limit | |
3868 | (found in ia64). */ | |
3869 | ||
3870 | CORE_ADDR | |
3871 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3872 | { | |
3873 | struct symtab_and_line prologue_sal; | |
3874 | CORE_ADDR start_pc; | |
3875 | CORE_ADDR end_pc; | |
3876 | const struct block *bl; | |
3877 | ||
3878 | /* Get an initial range for the function. */ | |
3879 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3880 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3881 | ||
3882 | prologue_sal = find_pc_line (start_pc, 0); | |
3883 | if (prologue_sal.line != 0) | |
3884 | { | |
3885 | /* For languages other than assembly, treat two consecutive line | |
3886 | entries at the same address as a zero-instruction prologue. | |
3887 | The GNU assembler emits separate line notes for each instruction | |
3888 | in a multi-instruction macro, but compilers generally will not | |
3889 | do this. */ | |
3890 | if (prologue_sal.symtab->language != language_asm) | |
3891 | { | |
8435453b | 3892 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3893 | int idx = 0; |
3894 | ||
3895 | /* Skip any earlier lines, and any end-of-sequence marker | |
3896 | from a previous function. */ | |
3897 | while (linetable->item[idx].pc != prologue_sal.pc | |
3898 | || linetable->item[idx].line == 0) | |
3899 | idx++; | |
3900 | ||
3901 | if (idx+1 < linetable->nitems | |
3902 | && linetable->item[idx+1].line != 0 | |
3903 | && linetable->item[idx+1].pc == start_pc) | |
3904 | return start_pc; | |
3905 | } | |
3906 | ||
3907 | /* If there is only one sal that covers the entire function, | |
3908 | then it is probably a single line function, like | |
3909 | "foo(){}". */ | |
3910 | if (prologue_sal.end >= end_pc) | |
3911 | return 0; | |
3912 | ||
3913 | while (prologue_sal.end < end_pc) | |
3914 | { | |
3915 | struct symtab_and_line sal; | |
3916 | ||
3917 | sal = find_pc_line (prologue_sal.end, 0); | |
3918 | if (sal.line == 0) | |
3919 | break; | |
3920 | /* Assume that a consecutive SAL for the same (or larger) | |
3921 | line mark the prologue -> body transition. */ | |
3922 | if (sal.line >= prologue_sal.line) | |
3923 | break; | |
3924 | /* Likewise if we are in a different symtab altogether | |
3925 | (e.g. within a file included via #include). */ | |
3926 | if (sal.symtab != prologue_sal.symtab) | |
3927 | break; | |
3928 | ||
3929 | /* The line number is smaller. Check that it's from the | |
3930 | same function, not something inlined. If it's inlined, | |
3931 | then there is no point comparing the line numbers. */ | |
3932 | bl = block_for_pc (prologue_sal.end); | |
3933 | while (bl) | |
3934 | { | |
3935 | if (block_inlined_p (bl)) | |
3936 | break; | |
3937 | if (BLOCK_FUNCTION (bl)) | |
3938 | { | |
3939 | bl = NULL; | |
3940 | break; | |
3941 | } | |
3942 | bl = BLOCK_SUPERBLOCK (bl); | |
3943 | } | |
3944 | if (bl != NULL) | |
3945 | break; | |
3946 | ||
3947 | /* The case in which compiler's optimizer/scheduler has | |
3948 | moved instructions into the prologue. We look ahead in | |
3949 | the function looking for address ranges whose | |
3950 | corresponding line number is less the first one that we | |
3951 | found for the function. This is more conservative then | |
3952 | refine_prologue_limit which scans a large number of SALs | |
3953 | looking for any in the prologue. */ | |
3954 | prologue_sal = sal; | |
3955 | } | |
3956 | } | |
3957 | ||
3958 | if (prologue_sal.end < end_pc) | |
3959 | /* Return the end of this line, or zero if we could not find a | |
3960 | line. */ | |
3961 | return prologue_sal.end; | |
3962 | else | |
3963 | /* Don't return END_PC, which is past the end of the function. */ | |
3964 | return prologue_sal.pc; | |
3965 | } | |
bf223d3e PA |
3966 | |
3967 | /* See symtab.h. */ | |
3968 | ||
3969 | symbol * | |
3970 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3971 | { | |
4024cf2b PA |
3972 | CORE_ADDR func_addr; |
3973 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3974 | return NULL; |
3975 | ||
4024cf2b | 3976 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3977 | if (sym != NULL |
3978 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3979 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3980 | return sym; |
3981 | ||
3982 | return NULL; | |
3983 | } | |
3984 | ||
f1f58506 | 3985 | \f |
c906108c SS |
3986 | /* If P is of the form "operator[ \t]+..." where `...' is |
3987 | some legitimate operator text, return a pointer to the | |
3988 | beginning of the substring of the operator text. | |
3989 | Otherwise, return "". */ | |
eca864fe | 3990 | |
96142726 TT |
3991 | static const char * |
3992 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3993 | { |
3994 | *end = ""; | |
8090b426 | 3995 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3996 | return *end; |
8090b426 | 3997 | p += CP_OPERATOR_LEN; |
c906108c SS |
3998 | |
3999 | /* Don't get faked out by `operator' being part of a longer | |
4000 | identifier. */ | |
c5aa993b | 4001 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
4002 | return *end; |
4003 | ||
4004 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
4005 | while (*p == ' ' || *p == '\t') | |
4006 | p++; | |
4007 | ||
c378eb4e | 4008 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 4009 | |
c5aa993b | 4010 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4011 | { |
96142726 | 4012 | const char *q = p + 1; |
433759f7 | 4013 | |
c5aa993b | 4014 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4015 | q++; |
4016 | *end = q; | |
4017 | return p; | |
4018 | } | |
4019 | ||
53e8ad3d MS |
4020 | while (*p) |
4021 | switch (*p) | |
4022 | { | |
4023 | case '\\': /* regexp quoting */ | |
4024 | if (p[1] == '*') | |
4025 | { | |
3e43a32a | 4026 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4027 | *end = p + 3; |
4028 | else /* 'operator\*' */ | |
4029 | *end = p + 2; | |
4030 | return p; | |
4031 | } | |
4032 | else if (p[1] == '[') | |
4033 | { | |
4034 | if (p[2] == ']') | |
3e43a32a MS |
4035 | error (_("mismatched quoting on brackets, " |
4036 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4037 | else if (p[2] == '\\' && p[3] == ']') |
4038 | { | |
4039 | *end = p + 4; /* 'operator\[\]' */ | |
4040 | return p; | |
4041 | } | |
4042 | else | |
8a3fe4f8 | 4043 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4044 | } |
9af17804 | 4045 | else |
53e8ad3d | 4046 | { |
85102364 | 4047 | /* Gratuitous quote: skip it and move on. */ |
53e8ad3d MS |
4048 | p++; |
4049 | continue; | |
4050 | } | |
4051 | break; | |
4052 | case '!': | |
4053 | case '=': | |
4054 | case '*': | |
4055 | case '/': | |
4056 | case '%': | |
4057 | case '^': | |
4058 | if (p[1] == '=') | |
4059 | *end = p + 2; | |
4060 | else | |
4061 | *end = p + 1; | |
4062 | return p; | |
4063 | case '<': | |
4064 | case '>': | |
4065 | case '+': | |
4066 | case '-': | |
4067 | case '&': | |
4068 | case '|': | |
4069 | if (p[0] == '-' && p[1] == '>') | |
4070 | { | |
c378eb4e | 4071 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4072 | if (p[2] == '*') |
4073 | { | |
4074 | *end = p + 3; /* 'operator->*' */ | |
4075 | return p; | |
4076 | } | |
4077 | else if (p[2] == '\\') | |
4078 | { | |
4079 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4080 | return p; | |
4081 | } | |
4082 | else | |
4083 | { | |
4084 | *end = p + 2; /* 'operator->' */ | |
4085 | return p; | |
4086 | } | |
4087 | } | |
4088 | if (p[1] == '=' || p[1] == p[0]) | |
4089 | *end = p + 2; | |
4090 | else | |
4091 | *end = p + 1; | |
4092 | return p; | |
4093 | case '~': | |
4094 | case ',': | |
c5aa993b | 4095 | *end = p + 1; |
53e8ad3d MS |
4096 | return p; |
4097 | case '(': | |
4098 | if (p[1] != ')') | |
3e43a32a MS |
4099 | error (_("`operator ()' must be specified " |
4100 | "without whitespace in `()'")); | |
c5aa993b | 4101 | *end = p + 2; |
53e8ad3d MS |
4102 | return p; |
4103 | case '?': | |
4104 | if (p[1] != ':') | |
3e43a32a MS |
4105 | error (_("`operator ?:' must be specified " |
4106 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4107 | *end = p + 2; |
4108 | return p; | |
4109 | case '[': | |
4110 | if (p[1] != ']') | |
3e43a32a MS |
4111 | error (_("`operator []' must be specified " |
4112 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4113 | *end = p + 2; |
4114 | return p; | |
4115 | default: | |
8a3fe4f8 | 4116 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4117 | break; |
4118 | } | |
4119 | ||
c906108c SS |
4120 | *end = ""; |
4121 | return *end; | |
4122 | } | |
c906108c | 4123 | \f |
c5aa993b | 4124 | |
28cd9371 PW |
4125 | /* What part to match in a file name. */ |
4126 | ||
4127 | struct filename_partial_match_opts | |
4128 | { | |
4129 | /* Only match the directory name part. */ | |
491144b5 | 4130 | bool dirname = false; |
28cd9371 PW |
4131 | |
4132 | /* Only match the basename part. */ | |
491144b5 | 4133 | bool basename = false; |
28cd9371 PW |
4134 | }; |
4135 | ||
9fdc877b DE |
4136 | /* Data structure to maintain printing state for output_source_filename. */ |
4137 | ||
4138 | struct output_source_filename_data | |
4139 | { | |
28cd9371 PW |
4140 | /* Output only filenames matching REGEXP. */ |
4141 | std::string regexp; | |
4142 | gdb::optional<compiled_regex> c_regexp; | |
4143 | /* Possibly only match a part of the filename. */ | |
4144 | filename_partial_match_opts partial_match; | |
4145 | ||
4146 | ||
9fdc877b DE |
4147 | /* Cache of what we've seen so far. */ |
4148 | struct filename_seen_cache *filename_seen_cache; | |
4149 | ||
4150 | /* Flag of whether we're printing the first one. */ | |
4151 | int first; | |
4152 | }; | |
4153 | ||
c94fdfd0 | 4154 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4155 | NAME is the name to print. |
4156 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4157 | |
c94fdfd0 | 4158 | static void |
9fdc877b DE |
4159 | output_source_filename (const char *name, |
4160 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4161 | { |
4162 | /* Since a single source file can result in several partial symbol | |
4163 | tables, we need to avoid printing it more than once. Note: if | |
4164 | some of the psymtabs are read in and some are not, it gets | |
4165 | printed both under "Source files for which symbols have been | |
4166 | read" and "Source files for which symbols will be read in on | |
4167 | demand". I consider this a reasonable way to deal with the | |
4168 | situation. I'm not sure whether this can also happen for | |
4169 | symtabs; it doesn't hurt to check. */ | |
4170 | ||
4171 | /* Was NAME already seen? */ | |
bbf2f4df | 4172 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4173 | { |
4174 | /* Yes; don't print it again. */ | |
4175 | return; | |
4176 | } | |
9fdc877b | 4177 | |
28cd9371 PW |
4178 | /* Does it match data->regexp? */ |
4179 | if (data->c_regexp.has_value ()) | |
4180 | { | |
4181 | const char *to_match; | |
4182 | std::string dirname; | |
4183 | ||
4184 | if (data->partial_match.dirname) | |
4185 | { | |
4186 | dirname = ldirname (name); | |
4187 | to_match = dirname.c_str (); | |
4188 | } | |
4189 | else if (data->partial_match.basename) | |
4190 | to_match = lbasename (name); | |
4191 | else | |
4192 | to_match = name; | |
4193 | ||
4194 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4195 | return; | |
4196 | } | |
4197 | ||
4198 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4199 | if (! data->first) |
4200 | printf_filtered (", "); | |
4201 | data->first = 0; | |
c906108c SS |
4202 | |
4203 | wrap_here (""); | |
1ed9f74e | 4204 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4205 | } |
c906108c | 4206 | |
ccefe4c4 | 4207 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4208 | |
ccefe4c4 | 4209 | static void |
533a737e | 4210 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4211 | void *data) |
4212 | { | |
19ba03f4 SM |
4213 | output_source_filename (fullname ? fullname : filename, |
4214 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4215 | } |
4216 | ||
28cd9371 PW |
4217 | using isrc_flag_option_def |
4218 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4219 | ||
4220 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4221 | ||
4222 | isrc_flag_option_def { | |
4223 | "dirname", | |
4224 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4225 | N_("Show only the files having a dirname matching REGEXP."), | |
4226 | }, | |
4227 | ||
4228 | isrc_flag_option_def { | |
4229 | "basename", | |
4230 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4231 | N_("Show only the files having a basename matching REGEXP."), | |
4232 | }, | |
4233 | ||
4234 | }; | |
4235 | ||
4236 | /* Create an option_def_group for the "info sources" options, with | |
4237 | ISRC_OPTS as context. */ | |
4238 | ||
4239 | static inline gdb::option::option_def_group | |
4240 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4241 | { | |
4242 | return {{info_sources_option_defs}, isrc_opts}; | |
4243 | } | |
4244 | ||
4245 | /* Prints the header message for the source files that will be printed | |
4246 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4247 | that tells what will or has been done with the symbols of the | |
4248 | matching source files. */ | |
4249 | ||
c906108c | 4250 | static void |
28cd9371 PW |
4251 | print_info_sources_header (const char *symbol_msg, |
4252 | const struct output_source_filename_data *data) | |
4253 | { | |
4254 | puts_filtered (symbol_msg); | |
4255 | if (!data->regexp.empty ()) | |
4256 | { | |
4257 | if (data->partial_match.dirname) | |
4258 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4259 | data->regexp.c_str ()); | |
4260 | else if (data->partial_match.basename) | |
4261 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4262 | data->regexp.c_str ()); | |
4263 | else | |
4264 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4265 | data->regexp.c_str ()); | |
4266 | } | |
4267 | puts_filtered ("\n"); | |
4268 | } | |
4269 | ||
4270 | /* Completer for "info sources". */ | |
4271 | ||
4272 | static void | |
4273 | info_sources_command_completer (cmd_list_element *ignore, | |
4274 | completion_tracker &tracker, | |
4275 | const char *text, const char *word) | |
4276 | { | |
4277 | const auto group = make_info_sources_options_def_group (nullptr); | |
4278 | if (gdb::option::complete_options | |
4279 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4280 | return; | |
4281 | } | |
4282 | ||
4283 | static void | |
4284 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4285 | { |
9fdc877b | 4286 | struct output_source_filename_data data; |
c5aa993b | 4287 | |
c906108c SS |
4288 | if (!have_full_symbols () && !have_partial_symbols ()) |
4289 | { | |
8a3fe4f8 | 4290 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4291 | } |
c5aa993b | 4292 | |
bbf2f4df PA |
4293 | filename_seen_cache filenames_seen; |
4294 | ||
28cd9371 PW |
4295 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4296 | ||
4297 | gdb::option::process_options | |
4298 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4299 | |
28cd9371 PW |
4300 | if (args != NULL && *args != '\000') |
4301 | data.regexp = args; | |
c906108c | 4302 | |
28cd9371 | 4303 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4304 | data.first = 1; |
28cd9371 PW |
4305 | |
4306 | if (data.partial_match.dirname && data.partial_match.basename) | |
4307 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4308 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4309 | && data.regexp.empty ()) | |
4310 | error (_("Missing REGEXP for 'info sources'.")); | |
4311 | ||
4312 | if (data.regexp.empty ()) | |
4313 | data.c_regexp.reset (); | |
4314 | else | |
4315 | { | |
4316 | int cflags = REG_NOSUB; | |
4317 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4318 | cflags |= REG_ICASE; | |
4319 | #endif | |
4320 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4321 | _("Invalid regexp")); | |
4322 | } | |
4323 | ||
4324 | print_info_sources_header | |
4325 | (_("Source files for which symbols have been read in:\n"), &data); | |
4326 | ||
2030c079 | 4327 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4328 | { |
b669c953 | 4329 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4330 | { |
4331 | for (symtab *s : compunit_filetabs (cu)) | |
4332 | { | |
4333 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4334 | |
8b31193a TT |
4335 | output_source_filename (fullname, &data); |
4336 | } | |
4337 | } | |
4338 | } | |
c906108c | 4339 | printf_filtered ("\n\n"); |
c5aa993b | 4340 | |
28cd9371 PW |
4341 | print_info_sources_header |
4342 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4343 | |
bbf2f4df | 4344 | filenames_seen.clear (); |
9fdc877b | 4345 | data.first = 1; |
bb4142cf DE |
4346 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4347 | 1 /*need_fullname*/); | |
c906108c SS |
4348 | printf_filtered ("\n"); |
4349 | } | |
4350 | ||
fbd9ab74 JK |
4351 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4352 | non-zero compare only lbasename of FILES. */ | |
4353 | ||
c906108c | 4354 | static int |
96142726 | 4355 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4356 | { |
4357 | int i; | |
4358 | ||
4359 | if (file != NULL && nfiles != 0) | |
4360 | { | |
4361 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4362 | { |
fbd9ab74 JK |
4363 | if (compare_filenames_for_search (file, (basenames |
4364 | ? lbasename (files[i]) | |
4365 | : files[i]))) | |
c5aa993b JM |
4366 | return 1; |
4367 | } | |
c906108c SS |
4368 | } |
4369 | else if (nfiles == 0) | |
4370 | return 1; | |
4371 | return 0; | |
4372 | } | |
4373 | ||
b52109bc | 4374 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4375 | sort symbols, not minimal symbols. */ |
eca864fe | 4376 | |
b9c04fb2 TT |
4377 | int |
4378 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4379 | const symbol_search &sym_b) | |
434d2d4f | 4380 | { |
b52109bc DE |
4381 | int c; |
4382 | ||
b9c04fb2 TT |
4383 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4384 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4385 | if (c != 0) |
4386 | return c; | |
434d2d4f | 4387 | |
b9c04fb2 TT |
4388 | if (sym_a.block != sym_b.block) |
4389 | return sym_a.block - sym_b.block; | |
b52109bc | 4390 | |
b9c04fb2 TT |
4391 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4392 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4393 | } |
4394 | ||
12615cba PW |
4395 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4396 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4397 | ||
4398 | bool | |
4399 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4400 | const struct symbol *sym) | |
4401 | { | |
4402 | struct type *sym_type; | |
4403 | std::string printed_sym_type_name; | |
4404 | ||
4405 | if (symbol_lookup_debug > 1) | |
4406 | { | |
4407 | fprintf_unfiltered (gdb_stdlog, | |
4408 | "treg_matches_sym_type_name\n sym %s\n", | |
4409 | SYMBOL_NATURAL_NAME (sym)); | |
4410 | } | |
4411 | ||
4412 | sym_type = SYMBOL_TYPE (sym); | |
4413 | if (sym_type == NULL) | |
4414 | return false; | |
4415 | ||
43d397ca PW |
4416 | { |
4417 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4418 | |
12615cba | 4419 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4420 | } |
4421 | ||
12615cba PW |
4422 | |
4423 | if (symbol_lookup_debug > 1) | |
4424 | { | |
4425 | fprintf_unfiltered (gdb_stdlog, | |
4426 | " sym_type_name %s\n", | |
4427 | printed_sym_type_name.c_str ()); | |
4428 | } | |
4429 | ||
4430 | ||
4431 | if (printed_sym_type_name.empty ()) | |
4432 | return false; | |
4433 | ||
4434 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4435 | } | |
4436 | ||
4437 | ||
b9c04fb2 | 4438 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4439 | |
4440 | static void | |
b9c04fb2 | 4441 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4442 | { |
b9c04fb2 TT |
4443 | std::sort (result->begin (), result->end ()); |
4444 | result->erase (std::unique (result->begin (), result->end ()), | |
4445 | result->end ()); | |
434d2d4f | 4446 | } |
5bd98722 | 4447 | |
c906108c | 4448 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4449 | returning the results. |
c906108c SS |
4450 | |
4451 | Only symbols of KIND are searched: | |
e8930875 | 4452 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4453 | and constants (enums). |
4454 | if T_REGEXP is not NULL, only returns var that have | |
4455 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4456 | FUNCTIONS_DOMAIN - search all functions |
4457 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4458 | ALL_DOMAIN - an internal error for this function |
c906108c | 4459 | |
b52109bc DE |
4460 | Within each file the results are sorted locally; each symtab's global and |
4461 | static blocks are separately alphabetized. | |
4acfdd20 AB |
4462 | Duplicate entries are removed. |
4463 | ||
4464 | When EXCLUDE_MINSYMS is false then matching minsyms are also returned, | |
4465 | otherwise they are excluded. */ | |
c378eb4e | 4466 | |
b9c04fb2 | 4467 | std::vector<symbol_search> |
96142726 | 4468 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4469 | const char *t_regexp, |
4acfdd20 AB |
4470 | int nfiles, const char *files[], |
4471 | bool exclude_minsyms) | |
c906108c | 4472 | { |
346d1dfe | 4473 | const struct blockvector *bv; |
582942f4 | 4474 | const struct block *b; |
52f0bd74 | 4475 | int i = 0; |
8157b174 | 4476 | struct block_iterator iter; |
52f0bd74 | 4477 | struct symbol *sym; |
c906108c | 4478 | int found_misc = 0; |
bc043ef3 | 4479 | static const enum minimal_symbol_type types[] |
eb86c5e2 | 4480 | = {mst_data, mst_text, mst_unknown}; |
bc043ef3 | 4481 | static const enum minimal_symbol_type types2[] |
eb86c5e2 | 4482 | = {mst_bss, mst_file_text, mst_unknown}; |
bc043ef3 | 4483 | static const enum minimal_symbol_type types3[] |
eb86c5e2 | 4484 | = {mst_file_data, mst_solib_trampoline, mst_unknown}; |
bc043ef3 | 4485 | static const enum minimal_symbol_type types4[] |
eb86c5e2 | 4486 | = {mst_file_bss, mst_text_gnu_ifunc, mst_unknown}; |
c906108c SS |
4487 | enum minimal_symbol_type ourtype; |
4488 | enum minimal_symbol_type ourtype2; | |
4489 | enum minimal_symbol_type ourtype3; | |
4490 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4491 | std::vector<symbol_search> result; |
2d7cc5c7 | 4492 | gdb::optional<compiled_regex> preg; |
12615cba | 4493 | gdb::optional<compiled_regex> treg; |
c906108c | 4494 | |
e8930875 JK |
4495 | gdb_assert (kind <= TYPES_DOMAIN); |
4496 | ||
8903c50d TT |
4497 | ourtype = types[kind]; |
4498 | ourtype2 = types2[kind]; | |
4499 | ourtype3 = types3[kind]; | |
4500 | ourtype4 = types4[kind]; | |
c906108c | 4501 | |
c906108c SS |
4502 | if (regexp != NULL) |
4503 | { | |
4504 | /* Make sure spacing is right for C++ operators. | |
4505 | This is just a courtesy to make the matching less sensitive | |
4506 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4507 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4508 | const char *opend; |
4509 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4510 | |
c906108c | 4511 | if (*opname) |
c5aa993b | 4512 | { |
3e43a32a MS |
4513 | int fix = -1; /* -1 means ok; otherwise number of |
4514 | spaces needed. */ | |
433759f7 | 4515 | |
c5aa993b JM |
4516 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4517 | { | |
c378eb4e | 4518 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4519 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4520 | fix = 1; | |
4521 | } | |
4522 | else | |
4523 | { | |
c378eb4e | 4524 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4525 | if (opname[-1] == ' ') |
4526 | fix = 0; | |
4527 | } | |
c378eb4e | 4528 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4529 | if (fix >= 0) |
4530 | { | |
045f55a6 | 4531 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4532 | |
c5aa993b JM |
4533 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4534 | regexp = tmp; | |
4535 | } | |
4536 | } | |
4537 | ||
2d7cc5c7 PA |
4538 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4539 | ? REG_ICASE : 0); | |
4540 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4541 | } |
4542 | ||
12615cba PW |
4543 | if (t_regexp != NULL) |
4544 | { | |
4545 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4546 | ? REG_ICASE : 0); | |
4547 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4548 | } | |
4549 | ||
c906108c SS |
4550 | /* Search through the partial symtabs *first* for all symbols |
4551 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4552 | the machinery below. */ |
14bc53a8 PA |
4553 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4554 | { | |
4555 | return file_matches (filename, files, nfiles, | |
4556 | basenames); | |
4557 | }, | |
b5ec771e | 4558 | lookup_name_info::match_any (), |
14bc53a8 PA |
4559 | [&] (const char *symname) |
4560 | { | |
12615cba PW |
4561 | return (!preg.has_value () |
4562 | || preg->exec (symname, | |
4563 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4564 | }, |
4565 | NULL, | |
4566 | kind); | |
c906108c SS |
4567 | |
4568 | /* Here, we search through the minimal symbol tables for functions | |
4569 | and variables that match, and force their symbols to be read. | |
4570 | This is in particular necessary for demangled variable names, | |
4571 | which are no longer put into the partial symbol tables. | |
4572 | The symbol will then be found during the scan of symtabs below. | |
4573 | ||
4574 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4575 | for the function, for variables we have to call |
4576 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4577 | has debug info. | |
c906108c | 4578 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4579 | any matching symbols without debug info. |
4580 | We only search the objfile the msymbol came from, we no longer search | |
4581 | all objfiles. In large programs (1000s of shared libs) searching all | |
4582 | objfiles is not worth the pain. */ | |
c906108c | 4583 | |
176620f1 | 4584 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4585 | { |
2030c079 | 4586 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4587 | { |
7932255d | 4588 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4589 | { |
4590 | QUIT; | |
89295b4d | 4591 | |
5325b9bf TT |
4592 | if (msymbol->created_by_gdb) |
4593 | continue; | |
422d65e7 | 4594 | |
5325b9bf TT |
4595 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4596 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4597 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4598 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4599 | { | |
4600 | if (!preg.has_value () | |
4601 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4602 | NULL, 0) == 0) | |
4603 | { | |
4604 | /* Note: An important side-effect of these | |
4605 | lookup functions is to expand the symbol | |
4606 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4607 | the next loop on compunits. */ |
5325b9bf TT |
4608 | if (kind == FUNCTIONS_DOMAIN |
4609 | ? (find_pc_compunit_symtab | |
4610 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4611 | == NULL) | |
4612 | : (lookup_symbol_in_objfile_from_linkage_name | |
4613 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4614 | VAR_DOMAIN) | |
4615 | .symbol == NULL)) | |
4616 | found_misc = 1; | |
4617 | } | |
4618 | } | |
4619 | } | |
4620 | } | |
c906108c SS |
4621 | } |
4622 | ||
2030c079 | 4623 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4624 | { |
b669c953 | 4625 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4626 | { |
4627 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4628 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4629 | { | |
4630 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4631 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4632 | { | |
4633 | struct symtab *real_symtab = symbol_symtab (sym); | |
4634 | ||
4635 | QUIT; | |
4636 | ||
4637 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4638 | not need to be a substring of symtab_to_fullname as | |
4639 | it may contain "./" etc. */ | |
4640 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4641 | || ((basenames_may_differ | |
4642 | || file_matches (lbasename (real_symtab->filename), | |
4643 | files, nfiles, 1)) | |
4644 | && file_matches (symtab_to_fullname (real_symtab), | |
4645 | files, nfiles, 0))) | |
4646 | && ((!preg.has_value () | |
4647 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4648 | NULL, 0) == 0) | |
4649 | && ((kind == VARIABLES_DOMAIN | |
4650 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4651 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4652 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4653 | /* LOC_CONST can be used for more than | |
4654 | just enums, e.g., c++ static const | |
4655 | members. We only want to skip enums | |
4656 | here. */ | |
4657 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4658 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4659 | == TYPE_CODE_ENUM)) | |
4660 | && (!treg.has_value () | |
4661 | || treg_matches_sym_type_name (*treg, sym))) | |
4662 | || (kind == FUNCTIONS_DOMAIN | |
4663 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4664 | && (!treg.has_value () | |
4665 | || treg_matches_sym_type_name (*treg, | |
4666 | sym))) | |
4667 | || (kind == TYPES_DOMAIN | |
d8f27c60 AB |
4668 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF |
4669 | && SYMBOL_DOMAIN (sym) != MODULE_DOMAIN)))) | |
d8aeb77f TT |
4670 | { |
4671 | /* match */ | |
4672 | result.emplace_back (i, sym); | |
4673 | } | |
4674 | } | |
4675 | } | |
4676 | } | |
4677 | } | |
c906108c | 4678 | |
b9c04fb2 TT |
4679 | if (!result.empty ()) |
4680 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4681 | |
c906108c | 4682 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4683 | no debug symbols, then add matching minsyms. But if the user wants |
4684 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4685 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4686 | |
a8462bbf | 4687 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4acfdd20 | 4688 | && !exclude_minsyms |
a8462bbf | 4689 | && !treg.has_value ()) |
c906108c | 4690 | { |
2030c079 | 4691 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4692 | { |
7932255d | 4693 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4694 | { |
4695 | QUIT; | |
89295b4d | 4696 | |
5325b9bf TT |
4697 | if (msymbol->created_by_gdb) |
4698 | continue; | |
422d65e7 | 4699 | |
5325b9bf TT |
4700 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4701 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4702 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4703 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4704 | { | |
4705 | if (!preg.has_value () | |
4706 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4707 | NULL, 0) == 0) | |
4708 | { | |
4709 | /* For functions we can do a quick check of whether the | |
4710 | symbol might be found via find_pc_symtab. */ | |
4711 | if (kind != FUNCTIONS_DOMAIN | |
4712 | || (find_pc_compunit_symtab | |
4713 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4714 | == NULL)) | |
4715 | { | |
4716 | if (lookup_symbol_in_objfile_from_linkage_name | |
4717 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4718 | VAR_DOMAIN) | |
4719 | .symbol == NULL) | |
4720 | { | |
4721 | /* match */ | |
4722 | result.emplace_back (i, msymbol, objfile); | |
4723 | } | |
4724 | } | |
4725 | } | |
4726 | } | |
4727 | } | |
4728 | } | |
c906108c SS |
4729 | } |
4730 | ||
b9c04fb2 | 4731 | return result; |
c906108c SS |
4732 | } |
4733 | ||
4734 | /* Helper function for symtab_symbol_info, this function uses | |
4735 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4736 | regarding the match to gdb_stdout. If LAST is not NULL, |
4737 | print file and line number information for the symbol as | |
4738 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4739 | |
c906108c | 4740 | static void |
8903c50d | 4741 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4742 | struct symbol *sym, |
05cba821 | 4743 | int block, const char *last) |
c906108c | 4744 | { |
43d397ca | 4745 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4746 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4747 | |
c7dcbf88 | 4748 | if (last != NULL) |
c906108c | 4749 | { |
c7dcbf88 | 4750 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4751 | |
c7dcbf88 AA |
4752 | if (filename_cmp (last, s_filename) != 0) |
4753 | { | |
6a831f06 PA |
4754 | printf_filtered (_("\nFile %ps:\n"), |
4755 | styled_string (file_name_style.style (), | |
4756 | s_filename)); | |
c7dcbf88 AA |
4757 | } |
4758 | ||
4759 | if (SYMBOL_LINE (sym) != 0) | |
4760 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4761 | else | |
4762 | puts_filtered ("\t"); | |
4763 | } | |
b744723f | 4764 | |
176620f1 | 4765 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4766 | printf_filtered ("static "); |
c5aa993b | 4767 | |
c378eb4e | 4768 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4769 | if (kind == TYPES_DOMAIN |
4770 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 AB |
4771 | { |
4772 | /* FIXME: For C (and C++) we end up with a difference in output here | |
4773 | between how a typedef is printed, and non-typedefs are printed. | |
4774 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4775 | appear C-like, while TYPE_PRINT doesn't. | |
4776 | ||
4777 | For the struct printing case below, things are worse, we force | |
4778 | printing of the ";" in this function, which is going to be wrong | |
4779 | for languages that don't require a ";" between statements. */ | |
4780 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_TYPEDEF) | |
4781 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); | |
4782 | else | |
4783 | { | |
4784 | type_print (SYMBOL_TYPE (sym), "", gdb_stdout, -1); | |
4785 | printf_filtered ("\n"); | |
4786 | } | |
4787 | } | |
c378eb4e | 4788 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4789 | else if (kind < TYPES_DOMAIN |
4790 | || (kind == TYPES_DOMAIN | |
4791 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4792 | { |
4793 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4794 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4795 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4796 | gdb_stdout, 0); |
c906108c SS |
4797 | |
4798 | printf_filtered (";\n"); | |
4799 | } | |
c906108c SS |
4800 | } |
4801 | ||
4802 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4803 | for non-debugging symbols to gdb_stdout. */ |
4804 | ||
c906108c | 4805 | static void |
7c7b6655 | 4806 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4807 | { |
7c7b6655 | 4808 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4809 | char *tmp; |
4810 | ||
d80b854b | 4811 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4812 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4813 | & (CORE_ADDR) 0xffffffff, |
4814 | 8); | |
3ac4495a | 4815 | else |
77e371c0 | 4816 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4817 | 16); |
6a831f06 PA |
4818 | |
4819 | ui_file_style sym_style = (msymbol.minsym->text_p () | |
4820 | ? function_name_style.style () | |
4821 | : ui_file_style ()); | |
4822 | ||
4823 | printf_filtered (_("%ps %ps\n"), | |
4824 | styled_string (address_style.style (), tmp), | |
4825 | styled_string (sym_style, | |
4826 | MSYMBOL_PRINT_NAME (msymbol.minsym))); | |
c906108c SS |
4827 | } |
4828 | ||
4829 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4830 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4831 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4832 | matches. */ |
4833 | ||
c906108c | 4834 | static void |
4acfdd20 | 4835 | symtab_symbol_info (bool quiet, bool exclude_minsyms, |
12615cba PW |
4836 | const char *regexp, enum search_domain kind, |
4837 | const char *t_regexp, int from_tty) | |
c906108c | 4838 | { |
bc043ef3 | 4839 | static const char * const classnames[] = |
e8930875 | 4840 | {"variable", "function", "type"}; |
c7dcbf88 | 4841 | const char *last_filename = ""; |
c906108c SS |
4842 | int first = 1; |
4843 | ||
e8930875 JK |
4844 | gdb_assert (kind <= TYPES_DOMAIN); |
4845 | ||
b16507e0 AB |
4846 | if (regexp != nullptr && *regexp == '\0') |
4847 | regexp = nullptr; | |
4848 | ||
c378eb4e | 4849 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba | 4850 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4acfdd20 AB |
4851 | t_regexp, 0, NULL, |
4852 | exclude_minsyms); | |
c906108c | 4853 | |
12615cba PW |
4854 | if (!quiet) |
4855 | { | |
4856 | if (regexp != NULL) | |
4857 | { | |
4858 | if (t_regexp != NULL) | |
4859 | printf_filtered | |
4860 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 4861 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
4862 | classnames[kind], regexp, t_regexp); |
4863 | else | |
4864 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4865 | classnames[kind], regexp); | |
4866 | } | |
4867 | else | |
4868 | { | |
4869 | if (t_regexp != NULL) | |
4870 | printf_filtered | |
4871 | (_("All defined %ss" | |
0c95f9ed | 4872 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
4873 | classnames[kind], t_regexp); |
4874 | else | |
4875 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4876 | } | |
4877 | } | |
c906108c | 4878 | |
b9c04fb2 | 4879 | for (const symbol_search &p : symbols) |
c906108c SS |
4880 | { |
4881 | QUIT; | |
4882 | ||
b9c04fb2 | 4883 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4884 | { |
4885 | if (first) | |
4886 | { | |
12615cba PW |
4887 | if (!quiet) |
4888 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4889 | first = 0; |
4890 | } | |
b9c04fb2 | 4891 | print_msymbol_info (p.msymbol); |
c5aa993b | 4892 | } |
c906108c | 4893 | else |
c5aa993b JM |
4894 | { |
4895 | print_symbol_info (kind, | |
b9c04fb2 TT |
4896 | p.symbol, |
4897 | p.block, | |
c5aa993b | 4898 | last_filename); |
d01060f0 | 4899 | last_filename |
b9c04fb2 | 4900 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4901 | } |
c906108c | 4902 | } |
c906108c SS |
4903 | } |
4904 | ||
4acfdd20 AB |
4905 | /* Structure to hold the values of the options used by the 'info variables' |
4906 | and 'info functions' commands. These correspond to the -q, -t, and -n | |
4907 | options. */ | |
4908 | ||
4909 | struct info_print_options | |
4910 | { | |
491144b5 CB |
4911 | bool quiet = false; |
4912 | bool exclude_minsyms = false; | |
4acfdd20 AB |
4913 | char *type_regexp = nullptr; |
4914 | ||
4915 | ~info_print_options () | |
4916 | { | |
4917 | xfree (type_regexp); | |
4918 | } | |
4919 | }; | |
4920 | ||
4921 | /* The options used by the 'info variables' and 'info functions' | |
4922 | commands. */ | |
4923 | ||
4924 | static const gdb::option::option_def info_print_options_defs[] = { | |
4925 | gdb::option::boolean_option_def<info_print_options> { | |
4926 | "q", | |
4927 | [] (info_print_options *opt) { return &opt->quiet; }, | |
4928 | nullptr, /* show_cmd_cb */ | |
4929 | nullptr /* set_doc */ | |
4930 | }, | |
4931 | ||
4932 | gdb::option::boolean_option_def<info_print_options> { | |
4933 | "n", | |
4934 | [] (info_print_options *opt) { return &opt->exclude_minsyms; }, | |
4935 | nullptr, /* show_cmd_cb */ | |
4936 | nullptr /* set_doc */ | |
4937 | }, | |
4938 | ||
4939 | gdb::option::string_option_def<info_print_options> { | |
4940 | "t", | |
4941 | [] (info_print_options *opt) { return &opt->type_regexp; }, | |
4942 | nullptr, /* show_cmd_cb */ | |
4943 | nullptr /* set_doc */ | |
4944 | } | |
4945 | }; | |
4946 | ||
4947 | /* Returns the option group used by 'info variables' and 'info | |
4948 | functions'. */ | |
4949 | ||
4950 | static gdb::option::option_def_group | |
4951 | make_info_print_options_def_group (info_print_options *opts) | |
4952 | { | |
4953 | return {{info_print_options_defs}, opts}; | |
4954 | } | |
4955 | ||
4956 | /* Command completer for 'info variables' and 'info functions'. */ | |
4957 | ||
4958 | static void | |
4959 | info_print_command_completer (struct cmd_list_element *ignore, | |
4960 | completion_tracker &tracker, | |
4961 | const char *text, const char * /* word */) | |
4962 | { | |
4963 | const auto group | |
4964 | = make_info_print_options_def_group (nullptr); | |
4965 | if (gdb::option::complete_options | |
4966 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4967 | return; | |
4968 | ||
4969 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
4970 | symbol_completer (ignore, tracker, text, word); | |
4971 | } | |
4972 | ||
b16507e0 AB |
4973 | /* Implement the 'info variables' command. */ |
4974 | ||
0b39b52e | 4975 | static void |
12615cba | 4976 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4977 | { |
b16507e0 | 4978 | info_print_options opts; |
4acfdd20 AB |
4979 | auto grp = make_info_print_options_def_group (&opts); |
4980 | gdb::option::process_options | |
4981 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4982 | if (args != nullptr && *args == '\0') | |
4983 | args = nullptr; | |
b16507e0 | 4984 | |
4acfdd20 | 4985 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, VARIABLES_DOMAIN, |
b16507e0 | 4986 | opts.type_regexp, from_tty); |
0b39b52e TT |
4987 | } |
4988 | ||
b16507e0 | 4989 | /* Implement the 'info functions' command. */ |
12615cba | 4990 | |
c906108c | 4991 | static void |
12615cba | 4992 | info_functions_command (const char *args, int from_tty) |
c906108c | 4993 | { |
b16507e0 | 4994 | info_print_options opts; |
4acfdd20 AB |
4995 | auto grp = make_info_print_options_def_group (&opts); |
4996 | gdb::option::process_options | |
4997 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4998 | if (args != nullptr && *args == '\0') | |
4999 | args = nullptr; | |
b16507e0 | 5000 | |
4acfdd20 AB |
5001 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, |
5002 | FUNCTIONS_DOMAIN, opts.type_regexp, from_tty); | |
c906108c SS |
5003 | } |
5004 | ||
a8eab7c6 AB |
5005 | /* Holds the -q option for the 'info types' command. */ |
5006 | ||
5007 | struct info_types_options | |
5008 | { | |
491144b5 | 5009 | bool quiet = false; |
a8eab7c6 AB |
5010 | }; |
5011 | ||
5012 | /* The options used by the 'info types' command. */ | |
5013 | ||
5014 | static const gdb::option::option_def info_types_options_defs[] = { | |
5015 | gdb::option::boolean_option_def<info_types_options> { | |
5016 | "q", | |
5017 | [] (info_types_options *opt) { return &opt->quiet; }, | |
5018 | nullptr, /* show_cmd_cb */ | |
5019 | nullptr /* set_doc */ | |
5020 | } | |
5021 | }; | |
5022 | ||
5023 | /* Returns the option group used by 'info types'. */ | |
5024 | ||
5025 | static gdb::option::option_def_group | |
5026 | make_info_types_options_def_group (info_types_options *opts) | |
5027 | { | |
5028 | return {{info_types_options_defs}, opts}; | |
5029 | } | |
5030 | ||
5031 | /* Implement the 'info types' command. */ | |
357e46e7 | 5032 | |
c906108c | 5033 | static void |
a8eab7c6 | 5034 | info_types_command (const char *args, int from_tty) |
c906108c | 5035 | { |
a8eab7c6 AB |
5036 | info_types_options opts; |
5037 | ||
5038 | auto grp = make_info_types_options_def_group (&opts); | |
5039 | gdb::option::process_options | |
5040 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5041 | if (args != nullptr && *args == '\0') | |
5042 | args = nullptr; | |
4acfdd20 | 5043 | symtab_symbol_info (opts.quiet, false, args, TYPES_DOMAIN, NULL, from_tty); |
a8eab7c6 AB |
5044 | } |
5045 | ||
5046 | /* Command completer for 'info types' command. */ | |
5047 | ||
5048 | static void | |
5049 | info_types_command_completer (struct cmd_list_element *ignore, | |
5050 | completion_tracker &tracker, | |
5051 | const char *text, const char * /* word */) | |
5052 | { | |
5053 | const auto group | |
5054 | = make_info_types_options_def_group (nullptr); | |
5055 | if (gdb::option::complete_options | |
5056 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5057 | return; | |
5058 | ||
5059 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5060 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
5061 | } |
5062 | ||
c378eb4e | 5063 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 5064 | |
8b93c638 | 5065 | void |
fba45db2 | 5066 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
5067 | { |
5068 | rbreak_command (regexp, from_tty); | |
5069 | } | |
8926118c | 5070 | |
c906108c | 5071 | static void |
0b39b52e | 5072 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 5073 | { |
c80049d3 | 5074 | std::string string; |
96142726 TT |
5075 | const char **files = NULL; |
5076 | const char *file_name; | |
8bd10a10 | 5077 | int nfiles = 0; |
c906108c | 5078 | |
8bd10a10 CM |
5079 | if (regexp) |
5080 | { | |
0b39b52e | 5081 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5082 | |
8bd10a10 CM |
5083 | if (colon && *(colon + 1) != ':') |
5084 | { | |
5085 | int colon_index; | |
96142726 | 5086 | char *local_name; |
8bd10a10 CM |
5087 | |
5088 | colon_index = colon - regexp; | |
224c3ddb | 5089 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5090 | memcpy (local_name, regexp, colon_index); |
5091 | local_name[colon_index--] = 0; | |
5092 | while (isspace (local_name[colon_index])) | |
5093 | local_name[colon_index--] = 0; | |
5094 | file_name = local_name; | |
8bd10a10 CM |
5095 | files = &file_name; |
5096 | nfiles = 1; | |
529480d0 | 5097 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5098 | } |
5099 | } | |
5100 | ||
b9c04fb2 TT |
5101 | std::vector<symbol_search> symbols = search_symbols (regexp, |
5102 | FUNCTIONS_DOMAIN, | |
12615cba | 5103 | NULL, |
4acfdd20 AB |
5104 | nfiles, files, |
5105 | false); | |
c906108c | 5106 | |
c80049d3 | 5107 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5108 | for (const symbol_search &p : symbols) |
c906108c | 5109 | { |
b9c04fb2 | 5110 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5111 | { |
b9c04fb2 | 5112 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5113 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5114 | |
c80049d3 TT |
5115 | string = string_printf ("%s:'%s'", fullname, |
5116 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
5117 | break_command (&string[0], from_tty); | |
c7dcbf88 | 5118 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5119 | } |
c906108c | 5120 | else |
c5aa993b | 5121 | { |
c80049d3 TT |
5122 | string = string_printf ("'%s'", |
5123 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 5124 | |
c80049d3 | 5125 | break_command (&string[0], from_tty); |
c5aa993b | 5126 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 5127 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 5128 | } |
c906108c | 5129 | } |
c906108c | 5130 | } |
c906108c | 5131 | \f |
c5aa993b | 5132 | |
c62446b1 | 5133 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5134 | |
5135 | static int | |
c62446b1 | 5136 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5137 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5138 | completion_match_result &match_res) |
5139 | { | |
d4c2a405 | 5140 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5141 | |
b5ec771e | 5142 | symbol_name_matcher_ftype *name_match |
618daa93 | 5143 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 5144 | |
a207cff2 | 5145 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5146 | } |
5147 | ||
b5ec771e | 5148 | /* See symtab.h. */ |
c906108c | 5149 | |
b5ec771e | 5150 | void |
eb3ff9a5 | 5151 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5152 | language symbol_language, |
eb3ff9a5 | 5153 | const char *symname, |
b5ec771e | 5154 | const lookup_name_info &lookup_name, |
0d5cff50 | 5155 | const char *text, const char *word) |
c906108c | 5156 | { |
b5ec771e PA |
5157 | completion_match_result &match_res |
5158 | = tracker.reset_completion_match_result (); | |
5159 | ||
c378eb4e | 5160 | /* Clip symbols that cannot match. */ |
c62446b1 | 5161 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 5162 | return; |
c906108c | 5163 | |
b5ec771e PA |
5164 | /* Refresh SYMNAME from the match string. It's potentially |
5165 | different depending on language. (E.g., on Ada, the match may be | |
5166 | the encoded symbol name wrapped in "<>"). */ | |
5167 | symname = match_res.match.match (); | |
5168 | gdb_assert (symname != NULL); | |
5169 | ||
c906108c | 5170 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5171 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5172 | |
5173 | { | |
60a20c19 PA |
5174 | gdb::unique_xmalloc_ptr<char> completion |
5175 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5176 | |
a207cff2 PA |
5177 | /* Here we pass the match-for-lcd object to add_completion. Some |
5178 | languages match the user text against substrings of symbol | |
5179 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5180 | "std::vector::push_back", "std::string::push_back", etc., and | |
5181 | in this case we want the completion lowest common denominator | |
5182 | to be "push_back" instead of "std::". */ | |
5183 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5184 | &match_res.match_for_lcd, text, word); |
c906108c SS |
5185 | } |
5186 | } | |
5187 | ||
6da67eb1 PA |
5188 | /* completion_list_add_name wrapper for struct symbol. */ |
5189 | ||
5190 | static void | |
eb3ff9a5 PA |
5191 | completion_list_add_symbol (completion_tracker &tracker, |
5192 | symbol *sym, | |
b5ec771e | 5193 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5194 | const char *text, const char *word) |
5195 | { | |
b5ec771e PA |
5196 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5197 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5198 | lookup_name, text, word); |
6da67eb1 PA |
5199 | } |
5200 | ||
5201 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5202 | ||
5203 | static void | |
eb3ff9a5 PA |
5204 | completion_list_add_msymbol (completion_tracker &tracker, |
5205 | minimal_symbol *sym, | |
b5ec771e | 5206 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5207 | const char *text, const char *word) |
5208 | { | |
b5ec771e PA |
5209 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
5210 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5211 | lookup_name, text, word); |
6da67eb1 PA |
5212 | } |
5213 | ||
b5ec771e | 5214 | |
69636828 AF |
5215 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5216 | again and feed all the selectors into the mill. */ | |
5217 | ||
5218 | static void | |
eb3ff9a5 PA |
5219 | completion_list_objc_symbol (completion_tracker &tracker, |
5220 | struct minimal_symbol *msymbol, | |
b5ec771e | 5221 | const lookup_name_info &lookup_name, |
0d5cff50 | 5222 | const char *text, const char *word) |
69636828 AF |
5223 | { |
5224 | static char *tmp = NULL; | |
5225 | static unsigned int tmplen = 0; | |
9af17804 | 5226 | |
0d5cff50 | 5227 | const char *method, *category, *selector; |
69636828 | 5228 | char *tmp2 = NULL; |
9af17804 | 5229 | |
efd66ac6 | 5230 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
5231 | |
5232 | /* Is it a method? */ | |
5233 | if ((method[0] != '-') && (method[0] != '+')) | |
5234 | return; | |
5235 | ||
1b026119 | 5236 | if (text[0] == '[') |
69636828 | 5237 | /* Complete on shortened method method. */ |
b5ec771e PA |
5238 | completion_list_add_name (tracker, language_objc, |
5239 | method + 1, | |
5240 | lookup_name, | |
1b026119 | 5241 | text, word); |
9af17804 | 5242 | |
69636828 AF |
5243 | while ((strlen (method) + 1) >= tmplen) |
5244 | { | |
5245 | if (tmplen == 0) | |
5246 | tmplen = 1024; | |
5247 | else | |
5248 | tmplen *= 2; | |
224c3ddb | 5249 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5250 | } |
5251 | selector = strchr (method, ' '); | |
5252 | if (selector != NULL) | |
5253 | selector++; | |
9af17804 | 5254 | |
69636828 | 5255 | category = strchr (method, '('); |
9af17804 | 5256 | |
69636828 AF |
5257 | if ((category != NULL) && (selector != NULL)) |
5258 | { | |
5259 | memcpy (tmp, method, (category - method)); | |
5260 | tmp[category - method] = ' '; | |
5261 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5262 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5263 | lookup_name, text, word); |
5264 | if (text[0] == '[') | |
b5ec771e | 5265 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5266 | lookup_name, text, word); |
69636828 | 5267 | } |
9af17804 | 5268 | |
69636828 AF |
5269 | if (selector != NULL) |
5270 | { | |
5271 | /* Complete on selector only. */ | |
5272 | strcpy (tmp, selector); | |
5273 | tmp2 = strchr (tmp, ']'); | |
5274 | if (tmp2 != NULL) | |
5275 | *tmp2 = '\0'; | |
9af17804 | 5276 | |
b5ec771e | 5277 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5278 | lookup_name, text, word); |
69636828 AF |
5279 | } |
5280 | } | |
5281 | ||
5282 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5283 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5284 | |
6f937416 PA |
5285 | static const char * |
5286 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5287 | { |
5288 | for (; p > text; --p) | |
5289 | { | |
5290 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5291 | continue; | |
5292 | else | |
5293 | { | |
5294 | if ((current_language->la_language == language_objc)) | |
5295 | { | |
c378eb4e | 5296 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5297 | continue; |
5298 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5299 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5300 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5301 | { /* Might be part of a method name. */ |
6f937416 | 5302 | const char *t = p; |
69636828 AF |
5303 | |
5304 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5305 | that we are in the middle of a method name. However, | |
5306 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5307 | Unfortunately we have to find it now to decide. */ | |
5308 | ||
5309 | while (t > text) | |
5310 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5311 | t[-1] == ' ' || t[-1] == ':' || | |
5312 | t[-1] == '(' || t[-1] == ')') | |
5313 | --t; | |
5314 | else | |
5315 | break; | |
5316 | ||
5317 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5318 | p = t - 2; /* Method name detected. */ |
5319 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5320 | } |
5321 | } | |
5322 | break; | |
5323 | } | |
5324 | } | |
5325 | return p; | |
5326 | } | |
5327 | ||
edb3359d | 5328 | static void |
eb3ff9a5 PA |
5329 | completion_list_add_fields (completion_tracker &tracker, |
5330 | struct symbol *sym, | |
b5ec771e | 5331 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5332 | const char *text, const char *word) |
edb3359d DJ |
5333 | { |
5334 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5335 | { | |
5336 | struct type *t = SYMBOL_TYPE (sym); | |
5337 | enum type_code c = TYPE_CODE (t); | |
5338 | int j; | |
5339 | ||
5340 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5341 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5342 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5343 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5344 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5345 | lookup_name, text, word); |
edb3359d DJ |
5346 | } |
5347 | } | |
5348 | ||
f9d67a22 PA |
5349 | /* See symtab.h. */ |
5350 | ||
5351 | bool | |
5352 | symbol_is_function_or_method (symbol *sym) | |
5353 | { | |
5354 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5355 | { | |
5356 | case TYPE_CODE_FUNC: | |
5357 | case TYPE_CODE_METHOD: | |
5358 | return true; | |
5359 | default: | |
5360 | return false; | |
5361 | } | |
5362 | } | |
5363 | ||
5364 | /* See symtab.h. */ | |
5365 | ||
5366 | bool | |
5367 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5368 | { | |
5369 | switch (MSYMBOL_TYPE (msymbol)) | |
5370 | { | |
5371 | case mst_text: | |
5372 | case mst_text_gnu_ifunc: | |
5373 | case mst_solib_trampoline: | |
5374 | case mst_file_text: | |
5375 | return true; | |
5376 | default: | |
5377 | return false; | |
5378 | } | |
5379 | } | |
5380 | ||
ca31ab1d PA |
5381 | /* See symtab.h. */ |
5382 | ||
5383 | bound_minimal_symbol | |
5384 | find_gnu_ifunc (const symbol *sym) | |
5385 | { | |
5386 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5387 | return {}; | |
5388 | ||
5389 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5390 | symbol_name_match_type::SEARCH_NAME); | |
5391 | struct objfile *objfile = symbol_objfile (sym); | |
5392 | ||
2b1ffcfd | 5393 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5394 | minimal_symbol *ifunc = NULL; |
5395 | ||
5396 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5397 | [&] (minimal_symbol *minsym) | |
5398 | { | |
5399 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5400 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5401 | { |
f50776aa PA |
5402 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5403 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5404 | { | |
5405 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5406 | msym_addr |
5407 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5408 | msym_addr, | |
5409 | current_top_target ()); | |
f50776aa PA |
5410 | } |
5411 | if (msym_addr == address) | |
5412 | { | |
5413 | ifunc = minsym; | |
5414 | return true; | |
5415 | } | |
ca31ab1d PA |
5416 | } |
5417 | return false; | |
5418 | }); | |
5419 | ||
5420 | if (ifunc != NULL) | |
5421 | return {ifunc, objfile}; | |
5422 | return {}; | |
5423 | } | |
5424 | ||
e11c72c7 GB |
5425 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5426 | ||
5427 | static void | |
5428 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5429 | completion_tracker &tracker, |
f9d67a22 | 5430 | complete_symbol_mode mode, |
b5ec771e | 5431 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5432 | const char *text, const char *word, |
5433 | enum type_code code) | |
5434 | { | |
5435 | struct symbol *sym; | |
5436 | const struct block *b; | |
5437 | struct block_iterator iter; | |
5438 | int i; | |
5439 | ||
ff6fa247 GB |
5440 | if (cust == NULL) |
5441 | return; | |
5442 | ||
e11c72c7 GB |
5443 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5444 | { | |
5445 | QUIT; | |
5446 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5447 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5448 | { | |
f9d67a22 PA |
5449 | if (completion_skip_symbol (mode, sym)) |
5450 | continue; | |
5451 | ||
e11c72c7 GB |
5452 | if (code == TYPE_CODE_UNDEF |
5453 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5454 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5455 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5456 | lookup_name, |
e11c72c7 GB |
5457 | text, word); |
5458 | } | |
5459 | } | |
5460 | } | |
5461 | ||
eb3ff9a5 PA |
5462 | void |
5463 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5464 | (completion_tracker &tracker, complete_symbol_mode mode, |
5465 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5466 | const char *text, const char *word, |
5467 | const char *break_on, enum type_code code) | |
c906108c | 5468 | { |
41d27058 JB |
5469 | /* Problem: All of the symbols have to be copied because readline |
5470 | frees them. I'm not going to worry about this; hopefully there | |
5471 | won't be that many. */ | |
5472 | ||
de4f826b | 5473 | struct symbol *sym; |
3977b71f | 5474 | const struct block *b; |
edb3359d | 5475 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5476 | struct block_iterator iter; |
c906108c | 5477 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5478 | const char *sym_text; |
c906108c | 5479 | |
41d27058 | 5480 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5481 | if (mode == complete_symbol_mode::LINESPEC) |
5482 | sym_text = text; | |
5483 | else | |
c906108c | 5484 | { |
6f937416 | 5485 | const char *p; |
c906108c | 5486 | char quote_found; |
6f937416 | 5487 | const char *quote_pos = NULL; |
c906108c SS |
5488 | |
5489 | /* First see if this is a quoted string. */ | |
5490 | quote_found = '\0'; | |
5491 | for (p = text; *p != '\0'; ++p) | |
5492 | { | |
5493 | if (quote_found != '\0') | |
5494 | { | |
5495 | if (*p == quote_found) | |
5496 | /* Found close quote. */ | |
5497 | quote_found = '\0'; | |
5498 | else if (*p == '\\' && p[1] == quote_found) | |
5499 | /* A backslash followed by the quote character | |
c5aa993b | 5500 | doesn't end the string. */ |
c906108c SS |
5501 | ++p; |
5502 | } | |
5503 | else if (*p == '\'' || *p == '"') | |
5504 | { | |
5505 | quote_found = *p; | |
5506 | quote_pos = p; | |
5507 | } | |
5508 | } | |
5509 | if (quote_found == '\'') | |
5510 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5511 | sym_text = quote_pos + 1; | |
5512 | else if (quote_found == '"') | |
5513 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5514 | to complete it any other way. */ |
c94fdfd0 | 5515 | { |
ef0b411a | 5516 | return; |
c94fdfd0 | 5517 | } |
c906108c SS |
5518 | else |
5519 | { | |
5520 | /* It is not a quoted string. Break it based on the characters | |
5521 | which are in symbols. */ | |
5522 | while (p > text) | |
5523 | { | |
95699ff0 | 5524 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5525 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5526 | --p; |
5527 | else | |
5528 | break; | |
5529 | } | |
5530 | sym_text = p; | |
5531 | } | |
5532 | } | |
5533 | ||
1b026119 | 5534 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5535 | |
c906108c SS |
5536 | /* At this point scan through the misc symbol vectors and add each |
5537 | symbol you find to the list. Eventually we want to ignore | |
5538 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5539 | handled by the psymtab code below). */ |
c906108c | 5540 | |
2f68a895 TT |
5541 | if (code == TYPE_CODE_UNDEF) |
5542 | { | |
2030c079 | 5543 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5544 | { |
7932255d | 5545 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5546 | { |
5547 | QUIT; | |
9af17804 | 5548 | |
5325b9bf TT |
5549 | if (completion_skip_symbol (mode, msymbol)) |
5550 | continue; | |
f9d67a22 | 5551 | |
5325b9bf TT |
5552 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5553 | sym_text, word); | |
eb3ff9a5 | 5554 | |
5325b9bf TT |
5555 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5556 | sym_text, word); | |
5557 | } | |
2f68a895 TT |
5558 | } |
5559 | } | |
c906108c | 5560 | |
e11c72c7 | 5561 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5562 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5563 | { |
b669c953 | 5564 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5565 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5566 | sym_text, word, code); | |
5567 | } | |
e11c72c7 | 5568 | |
14bc53a8 PA |
5569 | /* Look through the partial symtabs for all symbols which begin by |
5570 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5571 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5572 | lookup_name, |
5573 | NULL, | |
14bc53a8 PA |
5574 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5575 | { | |
5576 | add_symtab_completions (symtab, | |
f9d67a22 | 5577 | tracker, mode, lookup_name, |
1b026119 | 5578 | sym_text, word, code); |
14bc53a8 PA |
5579 | }, |
5580 | ALL_DOMAIN); | |
e11c72c7 | 5581 | |
c906108c | 5582 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5583 | complete on local vars). Also catch fields of types defined in |
5584 | this places which match our text string. Only complete on types | |
c378eb4e | 5585 | visible from current context. */ |
edb3359d DJ |
5586 | |
5587 | b = get_selected_block (0); | |
5588 | surrounding_static_block = block_static_block (b); | |
5589 | surrounding_global_block = block_global_block (b); | |
5590 | if (surrounding_static_block != NULL) | |
5591 | while (b != surrounding_static_block) | |
5592 | { | |
5593 | QUIT; | |
c906108c | 5594 | |
edb3359d DJ |
5595 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5596 | { | |
2f68a895 TT |
5597 | if (code == TYPE_CODE_UNDEF) |
5598 | { | |
b5ec771e | 5599 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5600 | sym_text, word); |
b5ec771e | 5601 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5602 | sym_text, word); |
2f68a895 TT |
5603 | } |
5604 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5605 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5606 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5607 | sym_text, word); |
edb3359d | 5608 | } |
c5aa993b | 5609 | |
edb3359d DJ |
5610 | /* Stop when we encounter an enclosing function. Do not stop for |
5611 | non-inlined functions - the locals of the enclosing function | |
5612 | are in scope for a nested function. */ | |
5613 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5614 | break; | |
5615 | b = BLOCK_SUPERBLOCK (b); | |
5616 | } | |
c906108c | 5617 | |
edb3359d | 5618 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5619 | |
2f68a895 TT |
5620 | if (code == TYPE_CODE_UNDEF) |
5621 | { | |
5622 | if (surrounding_static_block != NULL) | |
5623 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5624 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5625 | sym_text, word); |
edb3359d | 5626 | |
2f68a895 TT |
5627 | if (surrounding_global_block != NULL) |
5628 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5629 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5630 | sym_text, word); |
2f68a895 | 5631 | } |
c906108c | 5632 | |
2f68a895 TT |
5633 | /* Skip macros if we are completing a struct tag -- arguable but |
5634 | usually what is expected. */ | |
5635 | if (current_language->la_macro_expansion == macro_expansion_c | |
5636 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5637 | { |
f6c2623e | 5638 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5639 | |
14bc53a8 PA |
5640 | /* This adds a macro's name to the current completion list. */ |
5641 | auto add_macro_name = [&] (const char *macro_name, | |
5642 | const macro_definition *, | |
5643 | macro_source_file *, | |
5644 | int) | |
5645 | { | |
1b026119 PA |
5646 | completion_list_add_name (tracker, language_c, macro_name, |
5647 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5648 | }; |
5649 | ||
9a044a89 TT |
5650 | /* Add any macros visible in the default scope. Note that this |
5651 | may yield the occasional wrong result, because an expression | |
5652 | might be evaluated in a scope other than the default. For | |
5653 | example, if the user types "break file:line if <TAB>", the | |
5654 | resulting expression will be evaluated at "file:line" -- but | |
5655 | at there does not seem to be a way to detect this at | |
5656 | completion time. */ | |
5657 | scope = default_macro_scope (); | |
5658 | if (scope) | |
f6c2623e TT |
5659 | macro_for_each_in_scope (scope->file, scope->line, |
5660 | add_macro_name); | |
9a044a89 TT |
5661 | |
5662 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5663 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5664 | } |
ef0b411a GB |
5665 | } |
5666 | ||
eb3ff9a5 PA |
5667 | void |
5668 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5669 | complete_symbol_mode mode, |
b5ec771e | 5670 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5671 | const char *text, const char *word, |
5672 | enum type_code code) | |
f55ee35c | 5673 | { |
c6756f62 | 5674 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5675 | name_match_type, |
eb3ff9a5 PA |
5676 | text, word, "", |
5677 | code); | |
f55ee35c JK |
5678 | } |
5679 | ||
eb3ff9a5 PA |
5680 | /* Collect all symbols (regardless of class) which begin by matching |
5681 | TEXT. */ | |
41d27058 | 5682 | |
eb3ff9a5 PA |
5683 | void |
5684 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5685 | complete_symbol_mode mode, |
b5ec771e | 5686 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5687 | const char *text, const char *word) |
41d27058 | 5688 | { |
c6756f62 | 5689 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5690 | name_match_type, |
eb3ff9a5 PA |
5691 | text, word, |
5692 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5693 | } |
5694 | ||
eb3ff9a5 PA |
5695 | /* Like collect_symbol_completion_matches, but only collect |
5696 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5697 | |
eb3ff9a5 PA |
5698 | void |
5699 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5700 | const char *text, const char *word, | |
5701 | enum type_code code) | |
2f68a895 | 5702 | { |
c6756f62 | 5703 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5704 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5705 | |
2f68a895 TT |
5706 | gdb_assert (code == TYPE_CODE_UNION |
5707 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5708 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5709 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5710 | name_match_type, |
eb3ff9a5 | 5711 | text, word, code); |
41d27058 JB |
5712 | } |
5713 | ||
eb3ff9a5 PA |
5714 | /* Like collect_symbol_completion_matches, but collects a list of |
5715 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5716 | |
eb3ff9a5 PA |
5717 | void |
5718 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5719 | complete_symbol_mode mode, |
b5ec771e | 5720 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5721 | const char *text, const char *word, |
5722 | const char *srcfile) | |
c94fdfd0 | 5723 | { |
c94fdfd0 | 5724 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5725 | const char *sym_text; |
c94fdfd0 EZ |
5726 | |
5727 | /* Now look for the symbol we are supposed to complete on. | |
5728 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5729 | if (mode == complete_symbol_mode::LINESPEC) |
5730 | sym_text = text; | |
5731 | else | |
c94fdfd0 | 5732 | { |
6f937416 | 5733 | const char *p; |
c94fdfd0 | 5734 | char quote_found; |
6f937416 | 5735 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5736 | |
5737 | /* First see if this is a quoted string. */ | |
5738 | quote_found = '\0'; | |
5739 | for (p = text; *p != '\0'; ++p) | |
5740 | { | |
5741 | if (quote_found != '\0') | |
5742 | { | |
5743 | if (*p == quote_found) | |
5744 | /* Found close quote. */ | |
5745 | quote_found = '\0'; | |
5746 | else if (*p == '\\' && p[1] == quote_found) | |
5747 | /* A backslash followed by the quote character | |
5748 | doesn't end the string. */ | |
5749 | ++p; | |
5750 | } | |
5751 | else if (*p == '\'' || *p == '"') | |
5752 | { | |
5753 | quote_found = *p; | |
5754 | quote_pos = p; | |
5755 | } | |
5756 | } | |
5757 | if (quote_found == '\'') | |
5758 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5759 | sym_text = quote_pos + 1; | |
5760 | else if (quote_found == '"') | |
5761 | /* A double-quoted string is never a symbol, nor does it make sense | |
5762 | to complete it any other way. */ | |
5763 | { | |
eb3ff9a5 | 5764 | return; |
c94fdfd0 EZ |
5765 | } |
5766 | else | |
5767 | { | |
69636828 AF |
5768 | /* Not a quoted string. */ |
5769 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5770 | } |
5771 | } | |
5772 | ||
1b026119 | 5773 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5774 | |
8f14146e PA |
5775 | /* Go through symtabs for SRCFILE and check the externs and statics |
5776 | for symbols which match. */ | |
5777 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5778 | { |
8f14146e | 5779 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5780 | tracker, mode, lookup_name, |
1b026119 | 5781 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5782 | return false; |
5783 | }); | |
e27852be DE |
5784 | } |
5785 | ||
c94fdfd0 EZ |
5786 | /* A helper function for make_source_files_completion_list. It adds |
5787 | another file name to a list of possible completions, growing the | |
5788 | list as necessary. */ | |
5789 | ||
5790 | static void | |
6f937416 | 5791 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5792 | completion_list *list) |
c94fdfd0 | 5793 | { |
60a20c19 | 5794 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5795 | } |
5796 | ||
5797 | static int | |
5798 | not_interesting_fname (const char *fname) | |
5799 | { | |
5800 | static const char *illegal_aliens[] = { | |
5801 | "_globals_", /* inserted by coff_symtab_read */ | |
5802 | NULL | |
5803 | }; | |
5804 | int i; | |
5805 | ||
5806 | for (i = 0; illegal_aliens[i]; i++) | |
5807 | { | |
0ba1096a | 5808 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5809 | return 1; |
5810 | } | |
5811 | return 0; | |
5812 | } | |
5813 | ||
ccefe4c4 TT |
5814 | /* An object of this type is passed as the user_data argument to |
5815 | map_partial_symbol_filenames. */ | |
5816 | struct add_partial_filename_data | |
5817 | { | |
9fdc877b | 5818 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5819 | const char *text; |
5820 | const char *word; | |
ccefe4c4 | 5821 | int text_len; |
eb3ff9a5 | 5822 | completion_list *list; |
ccefe4c4 TT |
5823 | }; |
5824 | ||
5825 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5826 | |
ccefe4c4 | 5827 | static void |
2837d59e | 5828 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5829 | void *user_data) |
5830 | { | |
19ba03f4 SM |
5831 | struct add_partial_filename_data *data |
5832 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5833 | |
5834 | if (not_interesting_fname (filename)) | |
5835 | return; | |
bbf2f4df | 5836 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5837 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5838 | { |
5839 | /* This file matches for a completion; add it to the | |
5840 | current list of matches. */ | |
49c4e619 | 5841 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5842 | } |
5843 | else | |
5844 | { | |
5845 | const char *base_name = lbasename (filename); | |
433759f7 | 5846 | |
ccefe4c4 | 5847 | if (base_name != filename |
bbf2f4df | 5848 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5849 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5850 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5851 | } |
5852 | } | |
5853 | ||
eb3ff9a5 | 5854 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5855 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5856 | program. */ |
c94fdfd0 | 5857 | |
eb3ff9a5 | 5858 | completion_list |
6f937416 | 5859 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5860 | { |
c94fdfd0 | 5861 | size_t text_len = strlen (text); |
eb3ff9a5 | 5862 | completion_list list; |
31889e00 | 5863 | const char *base_name; |
ccefe4c4 | 5864 | struct add_partial_filename_data datum; |
c94fdfd0 | 5865 | |
c94fdfd0 EZ |
5866 | if (!have_full_symbols () && !have_partial_symbols ()) |
5867 | return list; | |
5868 | ||
bbf2f4df | 5869 | filename_seen_cache filenames_seen; |
9fdc877b | 5870 | |
2030c079 | 5871 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5872 | { |
b669c953 | 5873 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5874 | { |
8b31193a TT |
5875 | for (symtab *s : compunit_filetabs (cu)) |
5876 | { | |
5877 | if (not_interesting_fname (s->filename)) | |
5878 | continue; | |
5879 | if (!filenames_seen.seen (s->filename) | |
5880 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5881 | { | |
5882 | /* This file matches for a completion; add it to the current | |
5883 | list of matches. */ | |
5884 | add_filename_to_list (s->filename, text, word, &list); | |
5885 | } | |
5886 | else | |
5887 | { | |
5888 | /* NOTE: We allow the user to type a base name when the | |
5889 | debug info records leading directories, but not the other | |
5890 | way around. This is what subroutines of breakpoint | |
5891 | command do when they parse file names. */ | |
5892 | base_name = lbasename (s->filename); | |
5893 | if (base_name != s->filename | |
5894 | && !filenames_seen.seen (base_name) | |
5895 | && filename_ncmp (base_name, text, text_len) == 0) | |
5896 | add_filename_to_list (base_name, text, word, &list); | |
5897 | } | |
5898 | } | |
c94fdfd0 EZ |
5899 | } |
5900 | } | |
5901 | ||
bbf2f4df | 5902 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5903 | datum.text = text; |
5904 | datum.word = word; | |
5905 | datum.text_len = text_len; | |
5906 | datum.list = &list; | |
bb4142cf DE |
5907 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5908 | 0 /*need_fullname*/); | |
9fdc877b | 5909 | |
c94fdfd0 EZ |
5910 | return list; |
5911 | } | |
c906108c | 5912 | \f |
51cc5b07 | 5913 | /* Track MAIN */ |
32ac0d11 TT |
5914 | |
5915 | /* Return the "main_info" object for the current program space. If | |
5916 | the object has not yet been created, create it and fill in some | |
5917 | default values. */ | |
5918 | ||
5919 | static struct main_info * | |
5920 | get_main_info (void) | |
5921 | { | |
a32ad8c5 | 5922 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
5923 | |
5924 | if (info == NULL) | |
5925 | { | |
3d548a53 TT |
5926 | /* It may seem strange to store the main name in the progspace |
5927 | and also in whatever objfile happens to see a main name in | |
5928 | its debug info. The reason for this is mainly historical: | |
5929 | gdb returned "main" as the name even if no function named | |
5930 | "main" was defined the program; and this approach lets us | |
5931 | keep compatibility. */ | |
a32ad8c5 | 5932 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
5933 | } |
5934 | ||
5935 | return info; | |
5936 | } | |
5937 | ||
3d548a53 | 5938 | static void |
9e6c82ad | 5939 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5940 | { |
32ac0d11 TT |
5941 | struct main_info *info = get_main_info (); |
5942 | ||
5943 | if (info->name_of_main != NULL) | |
51cc5b07 | 5944 | { |
32ac0d11 TT |
5945 | xfree (info->name_of_main); |
5946 | info->name_of_main = NULL; | |
5947 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5948 | } |
5949 | if (name != NULL) | |
5950 | { | |
32ac0d11 TT |
5951 | info->name_of_main = xstrdup (name); |
5952 | info->language_of_main = lang; | |
51cc5b07 AC |
5953 | } |
5954 | } | |
5955 | ||
ea53e89f JB |
5956 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5957 | accordingly. */ | |
5958 | ||
5959 | static void | |
5960 | find_main_name (void) | |
5961 | { | |
cd6c7346 | 5962 | const char *new_main_name; |
3d548a53 TT |
5963 | |
5964 | /* First check the objfiles to see whether a debuginfo reader has | |
5965 | picked up the appropriate main name. Historically the main name | |
5966 | was found in a more or less random way; this approach instead | |
5967 | relies on the order of objfile creation -- which still isn't | |
5968 | guaranteed to get the correct answer, but is just probably more | |
5969 | accurate. */ | |
2030c079 | 5970 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5971 | { |
5972 | if (objfile->per_bfd->name_of_main != NULL) | |
5973 | { | |
5974 | set_main_name (objfile->per_bfd->name_of_main, | |
5975 | objfile->per_bfd->language_of_main); | |
5976 | return; | |
5977 | } | |
5978 | } | |
ea53e89f JB |
5979 | |
5980 | /* Try to see if the main procedure is in Ada. */ | |
5981 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5982 | be to add a new method in the language vector, and call this | |
5983 | method for each language until one of them returns a non-empty | |
5984 | name. This would allow us to remove this hard-coded call to | |
5985 | an Ada function. It is not clear that this is a better approach | |
5986 | at this point, because all methods need to be written in a way | |
c378eb4e | 5987 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5988 | important that a method does not return a wrong name for the main |
5989 | procedure if the main procedure is actually written in a different | |
5990 | language. It is easy to guaranty this with Ada, since we use a | |
5991 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5992 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5993 | be guarantied for languages such as C, for instance. This suggests |
5994 | that order of call for these methods becomes important, which means | |
5995 | a more complicated approach. */ | |
5996 | new_main_name = ada_main_name (); | |
5997 | if (new_main_name != NULL) | |
9af17804 | 5998 | { |
9e6c82ad | 5999 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
6000 | return; |
6001 | } | |
6002 | ||
63778547 IB |
6003 | new_main_name = d_main_name (); |
6004 | if (new_main_name != NULL) | |
6005 | { | |
6006 | set_main_name (new_main_name, language_d); | |
6007 | return; | |
6008 | } | |
6009 | ||
a766d390 DE |
6010 | new_main_name = go_main_name (); |
6011 | if (new_main_name != NULL) | |
6012 | { | |
9e6c82ad | 6013 | set_main_name (new_main_name, language_go); |
a766d390 DE |
6014 | return; |
6015 | } | |
6016 | ||
cd6c7346 PM |
6017 | new_main_name = pascal_main_name (); |
6018 | if (new_main_name != NULL) | |
9af17804 | 6019 | { |
9e6c82ad | 6020 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
6021 | return; |
6022 | } | |
6023 | ||
ea53e89f JB |
6024 | /* The languages above didn't identify the name of the main procedure. |
6025 | Fallback to "main". */ | |
9e6c82ad | 6026 | set_main_name ("main", language_unknown); |
ea53e89f JB |
6027 | } |
6028 | ||
cd215b2e TT |
6029 | /* See symtab.h. */ |
6030 | ||
6031 | const char * | |
6032 | main_name () | |
51cc5b07 | 6033 | { |
32ac0d11 TT |
6034 | struct main_info *info = get_main_info (); |
6035 | ||
6036 | if (info->name_of_main == NULL) | |
ea53e89f JB |
6037 | find_main_name (); |
6038 | ||
32ac0d11 | 6039 | return info->name_of_main; |
51cc5b07 AC |
6040 | } |
6041 | ||
9e6c82ad TT |
6042 | /* Return the language of the main function. If it is not known, |
6043 | return language_unknown. */ | |
6044 | ||
6045 | enum language | |
6046 | main_language (void) | |
6047 | { | |
32ac0d11 TT |
6048 | struct main_info *info = get_main_info (); |
6049 | ||
6050 | if (info->name_of_main == NULL) | |
6051 | find_main_name (); | |
6052 | ||
6053 | return info->language_of_main; | |
9e6c82ad TT |
6054 | } |
6055 | ||
ea53e89f JB |
6056 | /* Handle ``executable_changed'' events for the symtab module. */ |
6057 | ||
6058 | static void | |
781b42b0 | 6059 | symtab_observer_executable_changed (void) |
ea53e89f JB |
6060 | { |
6061 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 6062 | set_main_name (NULL, language_unknown); |
ea53e89f | 6063 | } |
51cc5b07 | 6064 | |
a6c727b2 DJ |
6065 | /* Return 1 if the supplied producer string matches the ARM RealView |
6066 | compiler (armcc). */ | |
6067 | ||
ececd218 | 6068 | bool |
a6c727b2 DJ |
6069 | producer_is_realview (const char *producer) |
6070 | { | |
6071 | static const char *const arm_idents[] = { | |
6072 | "ARM C Compiler, ADS", | |
6073 | "Thumb C Compiler, ADS", | |
6074 | "ARM C++ Compiler, ADS", | |
6075 | "Thumb C++ Compiler, ADS", | |
6076 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6077 | "ARM C/C++ Compiler, RVCT" | |
6078 | }; | |
6079 | int i; | |
6080 | ||
6081 | if (producer == NULL) | |
ececd218 | 6082 | return false; |
a6c727b2 DJ |
6083 | |
6084 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6085 | if (startswith (producer, arm_idents[i])) |
ececd218 | 6086 | return true; |
a6c727b2 | 6087 | |
ececd218 | 6088 | return false; |
a6c727b2 | 6089 | } |
ed0616c6 | 6090 | |
f1e6e072 TT |
6091 | \f |
6092 | ||
6093 | /* The next index to hand out in response to a registration request. */ | |
6094 | ||
6095 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6096 | ||
6097 | /* The maximum number of "aclass" registrations we support. This is | |
6098 | constant for convenience. */ | |
6099 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6100 | ||
6101 | /* The objects representing the various "aclass" values. The elements | |
6102 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6103 | elements are those registered at gdb initialization time. */ | |
6104 | ||
6105 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6106 | ||
6107 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6108 | so that it can be const. */ | |
6109 | ||
6110 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6111 | ||
6112 | /* Make sure we saved enough room in struct symbol. */ | |
6113 | ||
6114 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6115 | ||
6116 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6117 | is the ops vector associated with this index. This returns the new | |
6118 | index, which should be used as the aclass_index field for symbols | |
6119 | of this type. */ | |
6120 | ||
6121 | int | |
6122 | register_symbol_computed_impl (enum address_class aclass, | |
6123 | const struct symbol_computed_ops *ops) | |
6124 | { | |
6125 | int result = next_aclass_value++; | |
6126 | ||
6127 | gdb_assert (aclass == LOC_COMPUTED); | |
6128 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6129 | symbol_impl[result].aclass = aclass; | |
6130 | symbol_impl[result].ops_computed = ops; | |
6131 | ||
24d6c2a0 TT |
6132 | /* Sanity check OPS. */ |
6133 | gdb_assert (ops != NULL); | |
6134 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6135 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6136 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6137 | gdb_assert (ops->read_variable != NULL); |
6138 | ||
f1e6e072 TT |
6139 | return result; |
6140 | } | |
6141 | ||
6142 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6143 | OPS is the ops vector associated with this index. This returns the | |
6144 | new index, which should be used as the aclass_index field for symbols | |
6145 | of this type. */ | |
6146 | ||
6147 | int | |
6148 | register_symbol_block_impl (enum address_class aclass, | |
6149 | const struct symbol_block_ops *ops) | |
6150 | { | |
6151 | int result = next_aclass_value++; | |
6152 | ||
6153 | gdb_assert (aclass == LOC_BLOCK); | |
6154 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6155 | symbol_impl[result].aclass = aclass; | |
6156 | symbol_impl[result].ops_block = ops; | |
6157 | ||
6158 | /* Sanity check OPS. */ | |
6159 | gdb_assert (ops != NULL); | |
6160 | gdb_assert (ops->find_frame_base_location != NULL); | |
6161 | ||
6162 | return result; | |
6163 | } | |
6164 | ||
6165 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6166 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6167 | this index. This returns the new index, which should be used as | |
6168 | the aclass_index field for symbols of this type. */ | |
6169 | ||
6170 | int | |
6171 | register_symbol_register_impl (enum address_class aclass, | |
6172 | const struct symbol_register_ops *ops) | |
6173 | { | |
6174 | int result = next_aclass_value++; | |
6175 | ||
6176 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6177 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6178 | symbol_impl[result].aclass = aclass; | |
6179 | symbol_impl[result].ops_register = ops; | |
6180 | ||
6181 | return result; | |
6182 | } | |
6183 | ||
6184 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6185 | address_class. */ | |
6186 | ||
6187 | static void | |
6188 | initialize_ordinary_address_classes (void) | |
6189 | { | |
6190 | int i; | |
6191 | ||
6192 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6193 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6194 | } |
6195 | ||
6196 | \f | |
6197 | ||
1994afbf DE |
6198 | /* Helper function to initialize the fields of an objfile-owned symbol. |
6199 | It assumed that *SYM is already all zeroes. */ | |
6200 | ||
6201 | static void | |
6202 | initialize_objfile_symbol_1 (struct symbol *sym) | |
6203 | { | |
6204 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
6205 | SYMBOL_SECTION (sym) = -1; | |
6206 | } | |
6207 | ||
6208 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
6209 | |
6210 | void | |
38bf1463 | 6211 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
6212 | { |
6213 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 6214 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
6215 | } |
6216 | ||
6217 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6218 | obstack. */ | |
6219 | ||
6220 | struct symbol * | |
6221 | allocate_symbol (struct objfile *objfile) | |
6222 | { | |
6223 | struct symbol *result; | |
6224 | ||
6225 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 6226 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6227 | |
6228 | return result; | |
6229 | } | |
6230 | ||
6231 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6232 | obstack. */ | |
6233 | ||
6234 | struct template_symbol * | |
6235 | allocate_template_symbol (struct objfile *objfile) | |
6236 | { | |
6237 | struct template_symbol *result; | |
6238 | ||
6239 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 6240 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6241 | |
6242 | return result; | |
6243 | } | |
6244 | ||
08be3fe3 DE |
6245 | /* See symtab.h. */ |
6246 | ||
6247 | struct objfile * | |
6248 | symbol_objfile (const struct symbol *symbol) | |
6249 | { | |
1994afbf DE |
6250 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6251 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6252 | } |
6253 | ||
6254 | /* See symtab.h. */ | |
6255 | ||
6256 | struct gdbarch * | |
6257 | symbol_arch (const struct symbol *symbol) | |
6258 | { | |
1994afbf DE |
6259 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6260 | return symbol->owner.arch; | |
6261 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6262 | } |
6263 | ||
6264 | /* See symtab.h. */ | |
6265 | ||
6266 | struct symtab * | |
6267 | symbol_symtab (const struct symbol *symbol) | |
6268 | { | |
1994afbf DE |
6269 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6270 | return symbol->owner.symtab; | |
08be3fe3 DE |
6271 | } |
6272 | ||
6273 | /* See symtab.h. */ | |
6274 | ||
6275 | void | |
6276 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6277 | { | |
1994afbf DE |
6278 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6279 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6280 | } |
6281 | ||
4b610737 TT |
6282 | /* See symtab.h. */ |
6283 | ||
6284 | CORE_ADDR | |
6285 | get_symbol_address (const struct symbol *sym) | |
6286 | { | |
6287 | gdb_assert (sym->maybe_copied); | |
6288 | gdb_assert (SYMBOL_CLASS (sym) == LOC_STATIC); | |
6289 | ||
6290 | const char *linkage_name = SYMBOL_LINKAGE_NAME (sym); | |
6291 | ||
6292 | for (objfile *objfile : current_program_space->objfiles ()) | |
6293 | { | |
6294 | bound_minimal_symbol minsym | |
6295 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6296 | if (minsym.minsym != nullptr) | |
6297 | return BMSYMBOL_VALUE_ADDRESS (minsym); | |
6298 | } | |
6299 | return sym->ginfo.value.address; | |
6300 | } | |
6301 | ||
6302 | /* See symtab.h. */ | |
6303 | ||
6304 | CORE_ADDR | |
6305 | get_msymbol_address (struct objfile *objf, const struct minimal_symbol *minsym) | |
6306 | { | |
6307 | gdb_assert (minsym->maybe_copied); | |
6308 | gdb_assert ((objf->flags & OBJF_MAINLINE) == 0); | |
6309 | ||
6310 | const char *linkage_name = MSYMBOL_LINKAGE_NAME (minsym); | |
6311 | ||
6312 | for (objfile *objfile : current_program_space->objfiles ()) | |
6313 | { | |
6314 | if ((objfile->flags & OBJF_MAINLINE) != 0) | |
6315 | { | |
6316 | bound_minimal_symbol found | |
6317 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6318 | if (found.minsym != nullptr) | |
6319 | return BMSYMBOL_VALUE_ADDRESS (found); | |
6320 | } | |
6321 | } | |
6322 | return (minsym->value.address | |
6323 | + ANOFFSET (objf->section_offsets, minsym->section)); | |
6324 | } | |
6325 | ||
e623cf5d TT |
6326 | \f |
6327 | ||
c906108c | 6328 | void |
fba45db2 | 6329 | _initialize_symtab (void) |
c906108c | 6330 | { |
60cfcb20 AB |
6331 | cmd_list_element *c; |
6332 | ||
f1e6e072 TT |
6333 | initialize_ordinary_address_classes (); |
6334 | ||
60cfcb20 AB |
6335 | c = add_info ("variables", info_variables_command, |
6336 | info_print_args_help (_("\ | |
12615cba | 6337 | All global and static variable names or those matching REGEXPs.\n\ |
4acfdd20 | 6338 | Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6339 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6340 | _("global and static variables"), |
6341 | true)); | |
60cfcb20 | 6342 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6343 | if (dbx_commands) |
60cfcb20 AB |
6344 | { |
6345 | c = add_com ("whereis", class_info, info_variables_command, | |
6346 | info_print_args_help (_("\ | |
12615cba | 6347 | All global and static variable names, or those matching REGEXPs.\n\ |
4acfdd20 | 6348 | Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6349 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6350 | _("global and static variables"), |
6351 | true)); | |
60cfcb20 AB |
6352 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
6353 | } | |
c906108c | 6354 | |
60cfcb20 AB |
6355 | c = add_info ("functions", info_functions_command, |
6356 | info_print_args_help (_("\ | |
12615cba | 6357 | All function names or those matching REGEXPs.\n\ |
4acfdd20 | 6358 | Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6359 | Prints the functions.\n"), |
4acfdd20 AB |
6360 | _("functions"), |
6361 | true)); | |
60cfcb20 | 6362 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6363 | |
a8eab7c6 AB |
6364 | c = add_info ("types", info_types_command, _("\ |
6365 | All type names, or those matching REGEXP.\n\ | |
6366 | Usage: info types [-q] [REGEXP]\n\ | |
6367 | Print information about all types matching REGEXP, or all types if no\n\ | |
6368 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6369 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6370 | |
28cd9371 PW |
6371 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6372 | ||
6373 | static std::string info_sources_help | |
6374 | = gdb::option::build_help (_("\ | |
6375 | All source files in the program or those matching REGEXP.\n\ | |
6376 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6377 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6378 | \n\ | |
6379 | Options:\n\ | |
6380 | %OPTIONS%"), | |
6381 | info_sources_opts); | |
6382 | ||
6383 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6384 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c SS |
6385 | |
6386 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6387 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6388 | |
717d2f5a JB |
6389 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6390 | multiple_symbols_modes, &multiple_symbols_mode, | |
6391 | _("\ | |
590042fc | 6392 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6393 | Show how the debugger handles ambiguities in expressions."), _("\ |
6394 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6395 | NULL, NULL, &setlist, &showlist); | |
6396 | ||
c011a4f4 DE |
6397 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6398 | &basenames_may_differ, _("\ | |
6399 | Set whether a source file may have multiple base names."), _("\ | |
6400 | Show whether a source file may have multiple base names."), _("\ | |
6401 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6402 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6403 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6404 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6405 | but it allows the same file be known by more than one base name.\n\ | |
6406 | If not set (the default), all source files are assumed to have just\n\ | |
6407 | one base name, and gdb will do file name comparisons more efficiently."), | |
6408 | NULL, NULL, | |
6409 | &setlist, &showlist); | |
6410 | ||
db0fec5c DE |
6411 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6412 | _("Set debugging of symbol table creation."), | |
6413 | _("Show debugging of symbol table creation."), _("\ | |
6414 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6415 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6416 | A value greater than 1 provides more verbose information."), | |
6417 | NULL, | |
6418 | NULL, | |
6419 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6420 | |
cc485e62 DE |
6421 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6422 | _("\ | |
6423 | Set debugging of symbol lookup."), _("\ | |
6424 | Show debugging of symbol lookup."), _("\ | |
6425 | When enabled (non-zero), symbol lookups are logged."), | |
6426 | NULL, NULL, | |
6427 | &setdebuglist, &showdebuglist); | |
6428 | ||
f57d2163 DE |
6429 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6430 | &new_symbol_cache_size, | |
6431 | _("Set the size of the symbol cache."), | |
6432 | _("Show the size of the symbol cache."), _("\ | |
6433 | The size of the symbol cache.\n\ | |
6434 | If zero then the symbol cache is disabled."), | |
6435 | set_symbol_cache_size_handler, NULL, | |
6436 | &maintenance_set_cmdlist, | |
6437 | &maintenance_show_cmdlist); | |
6438 | ||
6439 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6440 | _("Dump the symbol cache for each program space."), | |
6441 | &maintenanceprintlist); | |
6442 | ||
6443 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6444 | maintenance_print_symbol_cache_statistics, | |
6445 | _("Print symbol cache statistics for each program space."), | |
6446 | &maintenanceprintlist); | |
6447 | ||
6448 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6449 | maintenance_flush_symbol_cache, | |
6450 | _("Flush the symbol cache for each program space."), | |
6451 | &maintenancelist); | |
6452 | ||
76727919 TT |
6453 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6454 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6455 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6456 | } |