Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "target.h" | |
26 | #include "value.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcmd.h" | |
88987551 | 30 | #include "gdb_regex.h" |
c906108c SS |
31 | #include "expression.h" |
32 | #include "language.h" | |
33 | #include "demangle.h" | |
34 | #include "inferior.h" | |
0378c332 | 35 | #include "source.h" |
a7fdf62f | 36 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 37 | #include "objc-lang.h" |
6aecb9c2 | 38 | #include "d-lang.h" |
1f8173e6 | 39 | #include "ada-lang.h" |
a766d390 | 40 | #include "go-lang.h" |
cd6c7346 | 41 | #include "p-lang.h" |
ff013f42 | 42 | #include "addrmap.h" |
529480d0 | 43 | #include "cli/cli-utils.h" |
1ed9f74e | 44 | #include "cli/cli-style.h" |
cce0e923 | 45 | #include "fnmatch.h" |
2de7ced7 | 46 | #include "hashtab.h" |
12615cba | 47 | #include "typeprint.h" |
2de7ced7 | 48 | |
04ea0df1 | 49 | #include "gdb_obstack.h" |
fe898f56 | 50 | #include "block.h" |
de4f826b | 51 | #include "dictionary.h" |
c906108c SS |
52 | |
53 | #include <sys/types.h> | |
54 | #include <fcntl.h> | |
53ce3c39 | 55 | #include <sys/stat.h> |
c906108c | 56 | #include <ctype.h> |
015a42b4 | 57 | #include "cp-abi.h" |
71c25dea | 58 | #include "cp-support.h" |
76727919 | 59 | #include "observable.h" |
3a40aaa0 | 60 | #include "solist.h" |
9a044a89 TT |
61 | #include "macrotab.h" |
62 | #include "macroscope.h" | |
c906108c | 63 | |
270140bd | 64 | #include "parser-defs.h" |
ef0b411a | 65 | #include "completer.h" |
5ed8105e | 66 | #include "progspace-and-thread.h" |
268a13a5 | 67 | #include "gdbsupport/gdb_optional.h" |
bbf2f4df | 68 | #include "filename-seen-cache.h" |
46a62268 | 69 | #include "arch-utils.h" |
b9c04fb2 | 70 | #include <algorithm> |
7bb43059 | 71 | #include "gdbsupport/gdb_string_view.h" |
268a13a5 | 72 | #include "gdbsupport/pathstuff.h" |
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; |
5396ae17 | 726 | gdb::unique_xmalloc_ptr<char> demangled; |
04a679b8 TT |
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, | |
31edb802 | 831 | gdb::string_view linkage_name, bool copy_name, |
1d94a5a3 | 832 | struct objfile_per_bfd_storage *per_bfd) |
2de7ced7 | 833 | { |
04a679b8 | 834 | struct demangled_name_entry **slot; |
2de7ced7 | 835 | |
b06ead72 JB |
836 | if (gsymbol->language == language_ada) |
837 | { | |
838 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 839 | we can save some space by not storing the demangled name. */ |
92174eea | 840 | if (!copy_name) |
31edb802 | 841 | gsymbol->name = linkage_name.data (); |
04a679b8 TT |
842 | else |
843 | { | |
224c3ddb | 844 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
31edb802 | 845 | linkage_name.length () + 1); |
0d5cff50 | 846 | |
31edb802 CB |
847 | memcpy (name, linkage_name.data (), linkage_name.length ()); |
848 | name[linkage_name.length ()] = '\0'; | |
0d5cff50 | 849 | gsymbol->name = name; |
04a679b8 | 850 | } |
84a1243b | 851 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
852 | |
853 | return; | |
854 | } | |
855 | ||
84a1243b | 856 | if (per_bfd->demangled_names_hash == NULL) |
0f14768a | 857 | create_demangled_names_hash (per_bfd); |
04a679b8 | 858 | |
31edb802 | 859 | struct demangled_name_entry entry (linkage_name); |
04a679b8 | 860 | slot = ((struct demangled_name_entry **) |
db92718b | 861 | htab_find_slot (per_bfd->demangled_names_hash.get (), |
04a679b8 | 862 | &entry, INSERT)); |
2de7ced7 DJ |
863 | |
864 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
865 | if (*slot == NULL |
866 | /* A C version of the symbol may have already snuck into the table. | |
867 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
5396ae17 | 868 | || (gsymbol->language == language_go && (*slot)->demangled == nullptr)) |
2de7ced7 | 869 | { |
0c921b21 CB |
870 | /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME |
871 | to true if the string might not be nullterminated. We have to make | |
872 | this copy because demangling needs a nullterminated string. */ | |
31edb802 | 873 | gdb::string_view linkage_name_copy; |
0c921b21 CB |
874 | if (copy_name) |
875 | { | |
31edb802 CB |
876 | char *alloc_name = (char *) alloca (linkage_name.length () + 1); |
877 | memcpy (alloc_name, linkage_name.data (), linkage_name.length ()); | |
878 | alloc_name[linkage_name.length ()] = '\0'; | |
0c921b21 | 879 | |
31edb802 CB |
880 | linkage_name_copy = gdb::string_view (alloc_name, |
881 | linkage_name.length ()); | |
0c921b21 CB |
882 | } |
883 | else | |
884 | linkage_name_copy = linkage_name; | |
885 | ||
5396ae17 | 886 | gdb::unique_xmalloc_ptr<char> demangled_name_ptr |
31edb802 | 887 | (symbol_find_demangled_name (gsymbol, linkage_name_copy.data ())); |
2de7ced7 | 888 | |
04a679b8 | 889 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 890 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
891 | mangled name saved, and we don't have a demangled name. So, |
892 | you might think we could save a little space by not recording | |
893 | this in the hash table at all. | |
5396ae17 | 894 | |
04a679b8 TT |
895 | It turns out that it is actually important to still save such |
896 | an entry in the hash table, because storing this name gives | |
705b5767 | 897 | us better bcache hit rates for partial symbols. */ |
0c921b21 | 898 | if (!copy_name) |
04a679b8 | 899 | { |
224c3ddb SM |
900 | *slot |
901 | = ((struct demangled_name_entry *) | |
902 | obstack_alloc (&per_bfd->storage_obstack, | |
5396ae17 | 903 | sizeof (demangled_name_entry))); |
31edb802 | 904 | new (*slot) demangled_name_entry (linkage_name); |
04a679b8 TT |
905 | } |
906 | else | |
907 | { | |
908 | /* If we must copy the mangled name, put it directly after | |
5396ae17 | 909 | the struct so we can have a single allocation. */ |
224c3ddb SM |
910 | *slot |
911 | = ((struct demangled_name_entry *) | |
912 | obstack_alloc (&per_bfd->storage_obstack, | |
31edb802 CB |
913 | sizeof (demangled_name_entry) |
914 | + linkage_name.length () + 1)); | |
5396ae17 | 915 | char *mangled_ptr = reinterpret_cast<char *> (*slot + 1); |
31edb802 CB |
916 | memcpy (mangled_ptr, linkage_name.data (), linkage_name.length ()); |
917 | mangled_ptr [linkage_name.length ()] = '\0'; | |
3a494279 | 918 | new (*slot) demangled_name_entry |
31edb802 | 919 | (gdb::string_view (mangled_ptr, linkage_name.length ())); |
04a679b8 | 920 | } |
5396ae17 | 921 | (*slot)->demangled = std::move (demangled_name_ptr); |
e99f9db0 | 922 | (*slot)->language = gsymbol->language; |
2de7ced7 | 923 | } |
e99f9db0 TV |
924 | else if (gsymbol->language == language_unknown |
925 | || gsymbol->language == language_auto) | |
926 | gsymbol->language = (*slot)->language; | |
2de7ced7 | 927 | |
7bb43059 | 928 | gsymbol->name = (*slot)->mangled.data (); |
5396ae17 CB |
929 | if ((*slot)->demangled != nullptr) |
930 | symbol_set_demangled_name (gsymbol, (*slot)->demangled.get (), | |
84a1243b | 931 | &per_bfd->storage_obstack); |
2de7ced7 | 932 | else |
84a1243b | 933 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
934 | } |
935 | ||
22abf04a DC |
936 | /* Return the source code name of a symbol. In languages where |
937 | demangling is necessary, this is the demangled name. */ | |
938 | ||
0d5cff50 | 939 | const char * |
22abf04a DC |
940 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
941 | { | |
9af17804 | 942 | switch (gsymbol->language) |
22abf04a | 943 | { |
1f8173e6 | 944 | case language_cplus: |
6aecb9c2 | 945 | case language_d: |
a766d390 | 946 | case language_go: |
1f8173e6 | 947 | case language_objc: |
f55ee35c | 948 | case language_fortran: |
b250c185 SW |
949 | if (symbol_get_demangled_name (gsymbol) != NULL) |
950 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
951 | break; |
952 | case language_ada: | |
f85f34ed | 953 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
954 | default: |
955 | break; | |
22abf04a | 956 | } |
1f8173e6 | 957 | return gsymbol->name; |
22abf04a DC |
958 | } |
959 | ||
9cc0d196 | 960 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 961 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 962 | |
0d5cff50 | 963 | const char * |
df8a16a1 | 964 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 965 | { |
c6e5ee5e SDJ |
966 | const char *dem_name = NULL; |
967 | ||
9af17804 | 968 | switch (gsymbol->language) |
1f8173e6 PH |
969 | { |
970 | case language_cplus: | |
6aecb9c2 | 971 | case language_d: |
a766d390 | 972 | case language_go: |
1f8173e6 | 973 | case language_objc: |
f55ee35c | 974 | case language_fortran: |
c6e5ee5e | 975 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
976 | break; |
977 | case language_ada: | |
f85f34ed | 978 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
979 | break; |
980 | default: | |
981 | break; | |
982 | } | |
c6e5ee5e | 983 | return dem_name; |
9cc0d196 | 984 | } |
fe39c653 | 985 | |
4725b721 PH |
986 | /* Return the search name of a symbol---generally the demangled or |
987 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 988 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 989 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 990 | |
0d5cff50 | 991 | const char * |
fc062ac6 JB |
992 | symbol_search_name (const struct general_symbol_info *gsymbol) |
993 | { | |
1f8173e6 PH |
994 | if (gsymbol->language == language_ada) |
995 | return gsymbol->name; | |
996 | else | |
997 | return symbol_natural_name (gsymbol); | |
4725b721 | 998 | } |
b5ec771e PA |
999 | |
1000 | /* See symtab.h. */ | |
1001 | ||
1002 | bool | |
1003 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
1004 | const lookup_name_info &name) | |
1005 | { | |
1006 | symbol_name_matcher_ftype *name_match | |
618daa93 | 1007 | = get_symbol_name_matcher (language_def (gsymbol->language), name); |
b5ec771e PA |
1008 | return name_match (symbol_search_name (gsymbol), name, NULL); |
1009 | } | |
1010 | ||
c906108c SS |
1011 | \f |
1012 | ||
ececd218 | 1013 | /* Return true if the two sections are the same, or if they could |
94277a38 DJ |
1014 | plausibly be copies of each other, one in an original object |
1015 | file and another in a separated debug file. */ | |
1016 | ||
ececd218 | 1017 | bool |
714835d5 UW |
1018 | matching_obj_sections (struct obj_section *obj_first, |
1019 | struct obj_section *obj_second) | |
94277a38 | 1020 | { |
714835d5 UW |
1021 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
1022 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
1023 | |
1024 | /* If they're the same section, then they match. */ | |
1025 | if (first == second) | |
ececd218 | 1026 | return true; |
94277a38 DJ |
1027 | |
1028 | /* If either is NULL, give up. */ | |
1029 | if (first == NULL || second == NULL) | |
ececd218 | 1030 | return false; |
94277a38 DJ |
1031 | |
1032 | /* This doesn't apply to absolute symbols. */ | |
1033 | if (first->owner == NULL || second->owner == NULL) | |
ececd218 | 1034 | return false; |
94277a38 DJ |
1035 | |
1036 | /* If they're in the same object file, they must be different sections. */ | |
1037 | if (first->owner == second->owner) | |
ececd218 | 1038 | return false; |
94277a38 DJ |
1039 | |
1040 | /* Check whether the two sections are potentially corresponding. They must | |
1041 | have the same size, address, and name. We can't compare section indexes, | |
1042 | which would be more reliable, because some sections may have been | |
1043 | stripped. */ | |
fd361982 | 1044 | if (bfd_section_size (first) != bfd_section_size (second)) |
ececd218 | 1045 | return false; |
94277a38 | 1046 | |
818f79f6 | 1047 | /* In-memory addresses may start at a different offset, relativize them. */ |
fd361982 AM |
1048 | if (bfd_section_vma (first) - bfd_get_start_address (first->owner) |
1049 | != bfd_section_vma (second) - bfd_get_start_address (second->owner)) | |
ececd218 | 1050 | return false; |
94277a38 | 1051 | |
fd361982 AM |
1052 | if (bfd_section_name (first) == NULL |
1053 | || bfd_section_name (second) == NULL | |
1054 | || strcmp (bfd_section_name (first), bfd_section_name (second)) != 0) | |
ececd218 | 1055 | return false; |
94277a38 DJ |
1056 | |
1057 | /* Otherwise check that they are in corresponding objfiles. */ | |
1058 | ||
9d7c67bf | 1059 | struct objfile *obj = NULL; |
2030c079 | 1060 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1061 | if (objfile->obfd == first->owner) |
1062 | { | |
1063 | obj = objfile; | |
1064 | break; | |
1065 | } | |
94277a38 DJ |
1066 | gdb_assert (obj != NULL); |
1067 | ||
1068 | if (obj->separate_debug_objfile != NULL | |
1069 | && obj->separate_debug_objfile->obfd == second->owner) | |
ececd218 | 1070 | return true; |
94277a38 DJ |
1071 | if (obj->separate_debug_objfile_backlink != NULL |
1072 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
ececd218 | 1073 | return true; |
94277a38 | 1074 | |
ececd218 | 1075 | return false; |
94277a38 | 1076 | } |
c5aa993b | 1077 | |
2097ae25 DE |
1078 | /* See symtab.h. */ |
1079 | ||
1080 | void | |
1081 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1082 | { |
77e371c0 | 1083 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1084 | |
1085 | /* If we know that this is not a text address, return failure. This is | |
1086 | necessary because we loop based on texthigh and textlow, which do | |
1087 | not include the data ranges. */ | |
77e371c0 | 1088 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 1089 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
2097ae25 | 1090 | return; |
c906108c | 1091 | |
2030c079 | 1092 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
1093 | { |
1094 | struct compunit_symtab *cust = NULL; | |
433759f7 | 1095 | |
aed57c53 TT |
1096 | if (objfile->sf) |
1097 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
1098 | pc, section, 0); | |
1099 | if (cust) | |
1100 | return; | |
1101 | } | |
c906108c | 1102 | } |
c906108c | 1103 | \f |
f57d2163 DE |
1104 | /* Hash function for the symbol cache. */ |
1105 | ||
1106 | static unsigned int | |
1107 | hash_symbol_entry (const struct objfile *objfile_context, | |
1108 | const char *name, domain_enum domain) | |
1109 | { | |
1110 | unsigned int hash = (uintptr_t) objfile_context; | |
1111 | ||
1112 | if (name != NULL) | |
1113 | hash += htab_hash_string (name); | |
1114 | ||
2c26b84f DE |
1115 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1116 | to map to the same slot. */ | |
1117 | if (domain == STRUCT_DOMAIN) | |
1118 | hash += VAR_DOMAIN * 7; | |
1119 | else | |
1120 | hash += domain * 7; | |
f57d2163 DE |
1121 | |
1122 | return hash; | |
1123 | } | |
1124 | ||
1125 | /* Equality function for the symbol cache. */ | |
1126 | ||
1127 | static int | |
1128 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1129 | const struct objfile *objfile_context, | |
1130 | const char *name, domain_enum domain) | |
1131 | { | |
1132 | const char *slot_name; | |
1133 | domain_enum slot_domain; | |
1134 | ||
1135 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1136 | return 0; | |
1137 | ||
1138 | if (slot->objfile_context != objfile_context) | |
1139 | return 0; | |
1140 | ||
1141 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1142 | { | |
1143 | slot_name = slot->value.not_found.name; | |
1144 | slot_domain = slot->value.not_found.domain; | |
1145 | } | |
1146 | else | |
1147 | { | |
d12307c1 PMR |
1148 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1149 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1150 | } |
1151 | ||
1152 | /* NULL names match. */ | |
1153 | if (slot_name == NULL && name == NULL) | |
1154 | { | |
1155 | /* But there's no point in calling symbol_matches_domain in the | |
1156 | SYMBOL_SLOT_FOUND case. */ | |
1157 | if (slot_domain != domain) | |
1158 | return 0; | |
1159 | } | |
1160 | else if (slot_name != NULL && name != NULL) | |
1161 | { | |
b5ec771e PA |
1162 | /* It's important that we use the same comparison that was done |
1163 | the first time through. If the slot records a found symbol, | |
1164 | then this means using the symbol name comparison function of | |
1165 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1166 | dictionary.c. It also means using symbol_matches_domain for | |
1167 | found symbols. See block.c. | |
f57d2163 DE |
1168 | |
1169 | If the slot records a not-found symbol, then require a precise match. | |
1170 | We could still be lax with whitespace like strcmp_iw though. */ | |
1171 | ||
1172 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1173 | { | |
1174 | if (strcmp (slot_name, name) != 0) | |
1175 | return 0; | |
1176 | if (slot_domain != domain) | |
1177 | return 0; | |
1178 | } | |
1179 | else | |
1180 | { | |
d12307c1 | 1181 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1182 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1183 | |
b5ec771e | 1184 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1185 | return 0; |
b5ec771e | 1186 | |
f57d2163 DE |
1187 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1188 | slot_domain, domain)) | |
1189 | return 0; | |
1190 | } | |
1191 | } | |
1192 | else | |
1193 | { | |
1194 | /* Only one name is NULL. */ | |
1195 | return 0; | |
1196 | } | |
1197 | ||
1198 | return 1; | |
1199 | } | |
1200 | ||
1201 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1202 | length array) in bytes. */ | |
1203 | ||
1204 | static size_t | |
1205 | symbol_cache_byte_size (unsigned int size) | |
1206 | { | |
1207 | return (sizeof (struct block_symbol_cache) | |
1208 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1209 | } | |
1210 | ||
1211 | /* Resize CACHE. */ | |
1212 | ||
1213 | static void | |
1214 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1215 | { | |
1216 | /* If there's no change in size, don't do anything. | |
1217 | All caches have the same size, so we can just compare with the size | |
1218 | of the global symbols cache. */ | |
1219 | if ((cache->global_symbols != NULL | |
1220 | && cache->global_symbols->size == new_size) | |
1221 | || (cache->global_symbols == NULL | |
1222 | && new_size == 0)) | |
1223 | return; | |
1224 | ||
1225 | xfree (cache->global_symbols); | |
1226 | xfree (cache->static_symbols); | |
1227 | ||
1228 | if (new_size == 0) | |
1229 | { | |
1230 | cache->global_symbols = NULL; | |
1231 | cache->static_symbols = NULL; | |
1232 | } | |
1233 | else | |
1234 | { | |
1235 | size_t total_size = symbol_cache_byte_size (new_size); | |
1236 | ||
224c3ddb SM |
1237 | cache->global_symbols |
1238 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1239 | cache->static_symbols | |
1240 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1241 | cache->global_symbols->size = new_size; |
1242 | cache->static_symbols->size = new_size; | |
1243 | } | |
1244 | } | |
1245 | ||
f57d2163 DE |
1246 | /* Return the symbol cache of PSPACE. |
1247 | Create one if it doesn't exist yet. */ | |
1248 | ||
1249 | static struct symbol_cache * | |
1250 | get_symbol_cache (struct program_space *pspace) | |
1251 | { | |
3017b94d | 1252 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1253 | |
1254 | if (cache == NULL) | |
1255 | { | |
3017b94d TT |
1256 | cache = symbol_cache_key.emplace (pspace); |
1257 | resize_symbol_cache (cache, symbol_cache_size); | |
f57d2163 DE |
1258 | } |
1259 | ||
1260 | return cache; | |
1261 | } | |
1262 | ||
f57d2163 DE |
1263 | /* Set the size of the symbol cache in all program spaces. */ |
1264 | ||
1265 | static void | |
1266 | set_symbol_cache_size (unsigned int new_size) | |
1267 | { | |
1268 | struct program_space *pspace; | |
1269 | ||
1270 | ALL_PSPACES (pspace) | |
1271 | { | |
3017b94d | 1272 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1273 | |
1274 | /* The pspace could have been created but not have a cache yet. */ | |
1275 | if (cache != NULL) | |
1276 | resize_symbol_cache (cache, new_size); | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | /* Called when symbol-cache-size is set. */ | |
1281 | ||
1282 | static void | |
eb4c3f4a | 1283 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1284 | struct cmd_list_element *c) |
1285 | { | |
1286 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1287 | { | |
1288 | /* Restore the previous value. | |
1289 | This is the value the "show" command prints. */ | |
1290 | new_symbol_cache_size = symbol_cache_size; | |
1291 | ||
1292 | error (_("Symbol cache size is too large, max is %u."), | |
1293 | MAX_SYMBOL_CACHE_SIZE); | |
1294 | } | |
1295 | symbol_cache_size = new_symbol_cache_size; | |
1296 | ||
1297 | set_symbol_cache_size (symbol_cache_size); | |
1298 | } | |
1299 | ||
1300 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1301 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1302 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1303 | failed (and thus this one will too), or NULL if the symbol is not present | |
1304 | in the cache. | |
d0509ba4 CB |
1305 | *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which |
1306 | can be used to save the result of a full lookup attempt. */ | |
f57d2163 | 1307 | |
d12307c1 | 1308 | static struct block_symbol |
f57d2163 | 1309 | symbol_cache_lookup (struct symbol_cache *cache, |
ddbcedf5 | 1310 | struct objfile *objfile_context, enum block_enum block, |
f57d2163 DE |
1311 | const char *name, domain_enum domain, |
1312 | struct block_symbol_cache **bsc_ptr, | |
1313 | struct symbol_cache_slot **slot_ptr) | |
1314 | { | |
1315 | struct block_symbol_cache *bsc; | |
1316 | unsigned int hash; | |
1317 | struct symbol_cache_slot *slot; | |
1318 | ||
1319 | if (block == GLOBAL_BLOCK) | |
1320 | bsc = cache->global_symbols; | |
1321 | else | |
1322 | bsc = cache->static_symbols; | |
1323 | if (bsc == NULL) | |
1324 | { | |
1325 | *bsc_ptr = NULL; | |
1326 | *slot_ptr = NULL; | |
6640a367 | 1327 | return {}; |
f57d2163 DE |
1328 | } |
1329 | ||
1330 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1331 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 | 1332 | |
d0509ba4 CB |
1333 | *bsc_ptr = bsc; |
1334 | *slot_ptr = slot; | |
1335 | ||
f57d2163 DE |
1336 | if (eq_symbol_entry (slot, objfile_context, name, domain)) |
1337 | { | |
1338 | if (symbol_lookup_debug) | |
1339 | fprintf_unfiltered (gdb_stdlog, | |
1340 | "%s block symbol cache hit%s for %s, %s\n", | |
1341 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1342 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1343 | ? " (not found)" : "", | |
1344 | name, domain_name (domain)); | |
1345 | ++bsc->hits; | |
1346 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1347 | return SYMBOL_LOOKUP_FAILED; | |
1348 | return slot->value.found; | |
1349 | } | |
1350 | ||
2c26b84f DE |
1351 | /* Symbol is not present in the cache. */ |
1352 | ||
f57d2163 DE |
1353 | if (symbol_lookup_debug) |
1354 | { | |
1355 | fprintf_unfiltered (gdb_stdlog, | |
1356 | "%s block symbol cache miss for %s, %s\n", | |
1357 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1358 | name, domain_name (domain)); | |
1359 | } | |
1360 | ++bsc->misses; | |
6640a367 | 1361 | return {}; |
f57d2163 DE |
1362 | } |
1363 | ||
1364 | /* Clear out SLOT. */ | |
1365 | ||
1366 | static void | |
1367 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1368 | { | |
1369 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1370 | xfree (slot->value.not_found.name); | |
1371 | slot->state = SYMBOL_SLOT_UNUSED; | |
1372 | } | |
1373 | ||
1374 | /* Mark SYMBOL as found in SLOT. | |
1375 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1376 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1377 | necessarily the objfile the symbol was found in. */ | |
1378 | ||
1379 | static void | |
1380 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1381 | struct symbol_cache_slot *slot, | |
1382 | struct objfile *objfile_context, | |
d12307c1 PMR |
1383 | struct symbol *symbol, |
1384 | const struct block *block) | |
f57d2163 DE |
1385 | { |
1386 | if (bsc == NULL) | |
1387 | return; | |
1388 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1389 | { | |
1390 | ++bsc->collisions; | |
1391 | symbol_cache_clear_slot (slot); | |
1392 | } | |
1393 | slot->state = SYMBOL_SLOT_FOUND; | |
1394 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1395 | slot->value.found.symbol = symbol; |
1396 | slot->value.found.block = block; | |
f57d2163 DE |
1397 | } |
1398 | ||
1399 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1400 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1401 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1402 | ||
1403 | static void | |
1404 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1405 | struct symbol_cache_slot *slot, | |
1406 | struct objfile *objfile_context, | |
1407 | const char *name, domain_enum domain) | |
1408 | { | |
1409 | if (bsc == NULL) | |
1410 | return; | |
1411 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1412 | { | |
1413 | ++bsc->collisions; | |
1414 | symbol_cache_clear_slot (slot); | |
1415 | } | |
1416 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1417 | slot->objfile_context = objfile_context; | |
1418 | slot->value.not_found.name = xstrdup (name); | |
1419 | slot->value.not_found.domain = domain; | |
1420 | } | |
1421 | ||
1422 | /* Flush the symbol cache of PSPACE. */ | |
1423 | ||
1424 | static void | |
1425 | symbol_cache_flush (struct program_space *pspace) | |
1426 | { | |
3017b94d | 1427 | struct symbol_cache *cache = symbol_cache_key.get (pspace); |
f57d2163 | 1428 | int pass; |
f57d2163 DE |
1429 | |
1430 | if (cache == NULL) | |
1431 | return; | |
1432 | if (cache->global_symbols == NULL) | |
1433 | { | |
1434 | gdb_assert (symbol_cache_size == 0); | |
1435 | gdb_assert (cache->static_symbols == NULL); | |
1436 | return; | |
1437 | } | |
1438 | ||
1439 | /* If the cache is untouched since the last flush, early exit. | |
1440 | This is important for performance during the startup of a program linked | |
1441 | with 100s (or 1000s) of shared libraries. */ | |
1442 | if (cache->global_symbols->misses == 0 | |
1443 | && cache->static_symbols->misses == 0) | |
1444 | return; | |
1445 | ||
1446 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1447 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1448 | ||
1449 | for (pass = 0; pass < 2; ++pass) | |
1450 | { | |
1451 | struct block_symbol_cache *bsc | |
1452 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1453 | unsigned int i; | |
1454 | ||
1455 | for (i = 0; i < bsc->size; ++i) | |
1456 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1457 | } | |
1458 | ||
1459 | cache->global_symbols->hits = 0; | |
1460 | cache->global_symbols->misses = 0; | |
1461 | cache->global_symbols->collisions = 0; | |
1462 | cache->static_symbols->hits = 0; | |
1463 | cache->static_symbols->misses = 0; | |
1464 | cache->static_symbols->collisions = 0; | |
1465 | } | |
1466 | ||
1467 | /* Dump CACHE. */ | |
1468 | ||
1469 | static void | |
1470 | symbol_cache_dump (const struct symbol_cache *cache) | |
1471 | { | |
1472 | int pass; | |
1473 | ||
1474 | if (cache->global_symbols == NULL) | |
1475 | { | |
1476 | printf_filtered (" <disabled>\n"); | |
1477 | return; | |
1478 | } | |
1479 | ||
1480 | for (pass = 0; pass < 2; ++pass) | |
1481 | { | |
1482 | const struct block_symbol_cache *bsc | |
1483 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1484 | unsigned int i; | |
1485 | ||
1486 | if (pass == 0) | |
1487 | printf_filtered ("Global symbols:\n"); | |
1488 | else | |
1489 | printf_filtered ("Static symbols:\n"); | |
1490 | ||
1491 | for (i = 0; i < bsc->size; ++i) | |
1492 | { | |
1493 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1494 | ||
1495 | QUIT; | |
1496 | ||
1497 | switch (slot->state) | |
1498 | { | |
1499 | case SYMBOL_SLOT_UNUSED: | |
1500 | break; | |
1501 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1502 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1503 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1504 | slot->value.not_found.name, |
1505 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1506 | break; |
1507 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1508 | { |
1509 | struct symbol *found = slot->value.found.symbol; | |
1510 | const struct objfile *context = slot->objfile_context; | |
1511 | ||
1512 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1513 | host_address_to_string (context), | |
1514 | SYMBOL_PRINT_NAME (found), | |
1515 | domain_name (SYMBOL_DOMAIN (found))); | |
1516 | break; | |
1517 | } | |
f57d2163 DE |
1518 | } |
1519 | } | |
1520 | } | |
1521 | } | |
1522 | ||
1523 | /* The "mt print symbol-cache" command. */ | |
1524 | ||
1525 | static void | |
510e5e56 | 1526 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1527 | { |
1528 | struct program_space *pspace; | |
1529 | ||
1530 | ALL_PSPACES (pspace) | |
1531 | { | |
1532 | struct symbol_cache *cache; | |
1533 | ||
1534 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1535 | pspace->num, | |
1536 | pspace->symfile_object_file != NULL | |
1537 | ? objfile_name (pspace->symfile_object_file) | |
1538 | : "(no object file)"); | |
1539 | ||
1540 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1541 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1542 | if (cache == NULL) |
1543 | printf_filtered (" <empty>\n"); | |
1544 | else | |
1545 | symbol_cache_dump (cache); | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | /* The "mt flush-symbol-cache" command. */ | |
1550 | ||
1551 | static void | |
510e5e56 | 1552 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1553 | { |
1554 | struct program_space *pspace; | |
1555 | ||
1556 | ALL_PSPACES (pspace) | |
1557 | { | |
1558 | symbol_cache_flush (pspace); | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | /* Print usage statistics of CACHE. */ | |
1563 | ||
1564 | static void | |
1565 | symbol_cache_stats (struct symbol_cache *cache) | |
1566 | { | |
1567 | int pass; | |
1568 | ||
1569 | if (cache->global_symbols == NULL) | |
1570 | { | |
1571 | printf_filtered (" <disabled>\n"); | |
1572 | return; | |
1573 | } | |
1574 | ||
1575 | for (pass = 0; pass < 2; ++pass) | |
1576 | { | |
1577 | const struct block_symbol_cache *bsc | |
1578 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1579 | ||
1580 | QUIT; | |
1581 | ||
1582 | if (pass == 0) | |
1583 | printf_filtered ("Global block cache stats:\n"); | |
1584 | else | |
1585 | printf_filtered ("Static block cache stats:\n"); | |
1586 | ||
1587 | printf_filtered (" size: %u\n", bsc->size); | |
1588 | printf_filtered (" hits: %u\n", bsc->hits); | |
1589 | printf_filtered (" misses: %u\n", bsc->misses); | |
1590 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | /* The "mt print symbol-cache-statistics" command. */ | |
1595 | ||
1596 | static void | |
510e5e56 | 1597 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1598 | { |
1599 | struct program_space *pspace; | |
1600 | ||
1601 | ALL_PSPACES (pspace) | |
1602 | { | |
1603 | struct symbol_cache *cache; | |
1604 | ||
1605 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1606 | pspace->num, | |
1607 | pspace->symfile_object_file != NULL | |
1608 | ? objfile_name (pspace->symfile_object_file) | |
1609 | : "(no object file)"); | |
1610 | ||
1611 | /* If the cache hasn't been created yet, avoid creating one. */ | |
3017b94d | 1612 | cache = symbol_cache_key.get (pspace); |
f57d2163 DE |
1613 | if (cache == NULL) |
1614 | printf_filtered (" empty, no stats available\n"); | |
1615 | else | |
1616 | symbol_cache_stats (cache); | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | /* This module's 'new_objfile' observer. */ | |
1621 | ||
1622 | static void | |
1623 | symtab_new_objfile_observer (struct objfile *objfile) | |
1624 | { | |
1625 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1626 | symbol_cache_flush (current_program_space); | |
1627 | } | |
1628 | ||
1629 | /* This module's 'free_objfile' observer. */ | |
1630 | ||
1631 | static void | |
1632 | symtab_free_objfile_observer (struct objfile *objfile) | |
1633 | { | |
1634 | symbol_cache_flush (objfile->pspace); | |
1635 | } | |
1636 | \f | |
c906108c SS |
1637 | /* Debug symbols usually don't have section information. We need to dig that |
1638 | out of the minimal symbols and stash that in the debug symbol. */ | |
1639 | ||
ccefe4c4 | 1640 | void |
907fc202 UW |
1641 | fixup_section (struct general_symbol_info *ginfo, |
1642 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1643 | { |
1644 | struct minimal_symbol *msym; | |
c906108c | 1645 | |
bccdca4a UW |
1646 | /* First, check whether a minimal symbol with the same name exists |
1647 | and points to the same address. The address check is required | |
1648 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1649 | point to the function descriptor, while the debug symbol will | |
1650 | point to the actual function code. */ | |
907fc202 UW |
1651 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1652 | if (msym) | |
efd66ac6 | 1653 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1654 | else |
19e2d14b KB |
1655 | { |
1656 | /* Static, function-local variables do appear in the linker | |
1657 | (minimal) symbols, but are frequently given names that won't | |
1658 | be found via lookup_minimal_symbol(). E.g., it has been | |
1659 | observed in frv-uclinux (ELF) executables that a static, | |
1660 | function-local variable named "foo" might appear in the | |
1661 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1662 | point in attempting to extend the lookup-by-name mechanism to | |
1663 | handle this case due to the fact that there can be multiple | |
1664 | names. | |
9af17804 | 1665 | |
19e2d14b KB |
1666 | So, instead, search the section table when lookup by name has |
1667 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1668 | been relocated. If so, the relocation offset (i.e. the | |
1669 | ANOFFSET value) needs to be subtracted from these values when | |
1670 | performing the comparison. We unconditionally subtract it, | |
1671 | because, when no relocation has been performed, the ANOFFSET | |
1672 | value will simply be zero. | |
9af17804 | 1673 | |
19e2d14b KB |
1674 | The address of the symbol whose section we're fixing up HAS |
1675 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1676 | the section isn't yet known and knowing the section is | |
1677 | necessary in order to add the correct relocation value. In | |
1678 | other words, we wouldn't even be in this function (attempting | |
1679 | to compute the section) if it were already known. | |
1680 | ||
1681 | Note that it is possible to search the minimal symbols | |
1682 | (subtracting the relocation value if necessary) to find the | |
1683 | matching minimal symbol, but this is overkill and much less | |
1684 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1685 | symbol, only its section. |
1686 | ||
19e2d14b KB |
1687 | Note that this technique (of doing a section table search) |
1688 | can fail when unrelocated section addresses overlap. For | |
1689 | this reason, we still attempt a lookup by name prior to doing | |
1690 | a search of the section table. */ | |
9af17804 | 1691 | |
19e2d14b | 1692 | struct obj_section *s; |
e27d198c | 1693 | int fallback = -1; |
433759f7 | 1694 | |
19e2d14b KB |
1695 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1696 | { | |
65cf3563 | 1697 | int idx = s - objfile->sections; |
19e2d14b KB |
1698 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1699 | ||
e27d198c TT |
1700 | if (fallback == -1) |
1701 | fallback = idx; | |
1702 | ||
f1f6aadf PA |
1703 | if (obj_section_addr (s) - offset <= addr |
1704 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1705 | { |
19e2d14b KB |
1706 | ginfo->section = idx; |
1707 | return; | |
1708 | } | |
1709 | } | |
e27d198c TT |
1710 | |
1711 | /* If we didn't find the section, assume it is in the first | |
1712 | section. If there is no allocated section, then it hardly | |
1713 | matters what we pick, so just pick zero. */ | |
1714 | if (fallback == -1) | |
1715 | ginfo->section = 0; | |
1716 | else | |
1717 | ginfo->section = fallback; | |
19e2d14b | 1718 | } |
c906108c SS |
1719 | } |
1720 | ||
1721 | struct symbol * | |
fba45db2 | 1722 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1723 | { |
907fc202 UW |
1724 | CORE_ADDR addr; |
1725 | ||
c906108c SS |
1726 | if (!sym) |
1727 | return NULL; | |
1728 | ||
1994afbf DE |
1729 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1730 | return sym; | |
1731 | ||
907fc202 UW |
1732 | /* We either have an OBJFILE, or we can get at it from the sym's |
1733 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1734 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1735 | |
1736 | if (objfile == NULL) | |
08be3fe3 | 1737 | objfile = symbol_objfile (sym); |
907fc202 | 1738 | |
e27d198c TT |
1739 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1740 | return sym; | |
1741 | ||
907fc202 UW |
1742 | /* We should have an objfile by now. */ |
1743 | gdb_assert (objfile); | |
1744 | ||
1745 | switch (SYMBOL_CLASS (sym)) | |
1746 | { | |
1747 | case LOC_STATIC: | |
1748 | case LOC_LABEL: | |
907fc202 UW |
1749 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1750 | break; | |
1751 | case LOC_BLOCK: | |
2b1ffcfd | 1752 | addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
907fc202 UW |
1753 | break; |
1754 | ||
1755 | default: | |
1756 | /* Nothing else will be listed in the minsyms -- no use looking | |
1757 | it up. */ | |
1758 | return sym; | |
1759 | } | |
1760 | ||
1761 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1762 | |
1763 | return sym; | |
1764 | } | |
1765 | ||
b5ec771e PA |
1766 | /* See symtab.h. */ |
1767 | ||
1768 | demangle_for_lookup_info::demangle_for_lookup_info | |
1769 | (const lookup_name_info &lookup_name, language lang) | |
1770 | { | |
1771 | demangle_result_storage storage; | |
1772 | ||
c62446b1 PA |
1773 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1774 | { | |
1775 | gdb::unique_xmalloc_ptr<char> without_params | |
1776 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1777 | lookup_name.completion_mode ()); | |
1778 | ||
1779 | if (without_params != NULL) | |
1780 | { | |
de63c46b PA |
1781 | if (lookup_name.match_type () != symbol_name_match_type::SEARCH_NAME) |
1782 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1783 | lang, storage); | |
c62446b1 PA |
1784 | return; |
1785 | } | |
1786 | } | |
1787 | ||
de63c46b PA |
1788 | if (lookup_name.match_type () == symbol_name_match_type::SEARCH_NAME) |
1789 | m_demangled_name = lookup_name.name (); | |
1790 | else | |
1791 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), | |
1792 | lang, storage); | |
b5ec771e PA |
1793 | } |
1794 | ||
1795 | /* See symtab.h. */ | |
1796 | ||
1797 | const lookup_name_info & | |
1798 | lookup_name_info::match_any () | |
1799 | { | |
1800 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1801 | symbol names. */ | |
1802 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1803 | true); | |
1804 | ||
1805 | return lookup_name; | |
1806 | } | |
1807 | ||
f8eba3c6 | 1808 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1809 | lookup functions. The result can either be the input NAME |
1810 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1811 | |
2f408ecb | 1812 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1813 | Normally, Ada symbol lookups are performed using the encoded name |
1814 | rather than the demangled name, and so it might seem to make sense | |
1815 | for this function to return an encoded version of NAME. | |
1816 | Unfortunately, we cannot do this, because this function is used in | |
1817 | circumstances where it is not appropriate to try to encode NAME. | |
1818 | For instance, when displaying the frame info, we demangle the name | |
1819 | of each parameter, and then perform a symbol lookup inside our | |
1820 | function using that demangled name. In Ada, certain functions | |
1821 | have internally-generated parameters whose name contain uppercase | |
1822 | characters. Encoding those name would result in those uppercase | |
1823 | characters to become lowercase, and thus cause the symbol lookup | |
1824 | to fail. */ | |
c906108c | 1825 | |
2f408ecb | 1826 | const char * |
f8eba3c6 | 1827 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1828 | demangle_result_storage &storage) |
c906108c | 1829 | { |
9c37b5ae | 1830 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1831 | lookup, so we can always binary search. */ |
53c5240f | 1832 | if (lang == language_cplus) |
729051e6 | 1833 | { |
2f408ecb PA |
1834 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1835 | if (demangled_name != NULL) | |
1836 | return storage.set_malloc_ptr (demangled_name); | |
1837 | ||
1838 | /* If we were given a non-mangled name, canonicalize it | |
1839 | according to the language (so far only for C++). */ | |
1840 | std::string canon = cp_canonicalize_string (name); | |
1841 | if (!canon.empty ()) | |
1842 | return storage.swap_string (canon); | |
729051e6 | 1843 | } |
6aecb9c2 JB |
1844 | else if (lang == language_d) |
1845 | { | |
2f408ecb PA |
1846 | char *demangled_name = d_demangle (name, 0); |
1847 | if (demangled_name != NULL) | |
1848 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1849 | } |
a766d390 DE |
1850 | else if (lang == language_go) |
1851 | { | |
2f408ecb PA |
1852 | char *demangled_name = go_demangle (name, 0); |
1853 | if (demangled_name != NULL) | |
1854 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1855 | } |
729051e6 | 1856 | |
2f408ecb | 1857 | return name; |
f8eba3c6 TT |
1858 | } |
1859 | ||
5ffa0793 PA |
1860 | /* See symtab.h. */ |
1861 | ||
1862 | unsigned int | |
1863 | search_name_hash (enum language language, const char *search_name) | |
1864 | { | |
1865 | return language_def (language)->la_search_name_hash (search_name); | |
1866 | } | |
1867 | ||
cf901d3b | 1868 | /* See symtab.h. |
f8eba3c6 | 1869 | |
cf901d3b | 1870 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1871 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1872 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1873 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1874 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1875 | that there is C++ code below which can error(), but that probably |
1876 | doesn't affect these calls since they are looking for a known | |
1877 | variable and thus can probably assume it will never hit the C++ | |
1878 | code). */ | |
1879 | ||
d12307c1 | 1880 | struct block_symbol |
f8eba3c6 TT |
1881 | lookup_symbol_in_language (const char *name, const struct block *block, |
1882 | const domain_enum domain, enum language lang, | |
1993b719 | 1883 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1884 | { |
2f408ecb PA |
1885 | demangle_result_storage storage; |
1886 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1887 | |
de63c46b PA |
1888 | return lookup_symbol_aux (modified_name, |
1889 | symbol_name_match_type::FULL, | |
1890 | block, domain, lang, | |
2f408ecb | 1891 | is_a_field_of_this); |
fba7f19c EZ |
1892 | } |
1893 | ||
cf901d3b | 1894 | /* See symtab.h. */ |
53c5240f | 1895 | |
d12307c1 | 1896 | struct block_symbol |
53c5240f | 1897 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1898 | domain_enum domain, |
1899 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1900 | { |
1901 | return lookup_symbol_in_language (name, block, domain, | |
1902 | current_language->la_language, | |
2570f2b7 | 1903 | is_a_field_of_this); |
53c5240f PA |
1904 | } |
1905 | ||
cf901d3b | 1906 | /* See symtab.h. */ |
66a17cb6 | 1907 | |
de63c46b PA |
1908 | struct block_symbol |
1909 | lookup_symbol_search_name (const char *search_name, const struct block *block, | |
1910 | domain_enum domain) | |
1911 | { | |
1912 | return lookup_symbol_aux (search_name, symbol_name_match_type::SEARCH_NAME, | |
1913 | block, domain, language_asm, NULL); | |
1914 | } | |
1915 | ||
1916 | /* See symtab.h. */ | |
1917 | ||
d12307c1 | 1918 | struct block_symbol |
66a17cb6 TT |
1919 | lookup_language_this (const struct language_defn *lang, |
1920 | const struct block *block) | |
1921 | { | |
1922 | if (lang->la_name_of_this == NULL || block == NULL) | |
6640a367 | 1923 | return {}; |
66a17cb6 | 1924 | |
cc485e62 DE |
1925 | if (symbol_lookup_debug > 1) |
1926 | { | |
1927 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1928 | ||
1929 | fprintf_unfiltered (gdb_stdlog, | |
1930 | "lookup_language_this (%s, %s (objfile %s))", | |
1931 | lang->la_name, host_address_to_string (block), | |
1932 | objfile_debug_name (objfile)); | |
1933 | } | |
1934 | ||
03de6823 | 1935 | while (block) |
66a17cb6 TT |
1936 | { |
1937 | struct symbol *sym; | |
1938 | ||
de63c46b PA |
1939 | sym = block_lookup_symbol (block, lang->la_name_of_this, |
1940 | symbol_name_match_type::SEARCH_NAME, | |
1941 | VAR_DOMAIN); | |
66a17cb6 | 1942 | if (sym != NULL) |
f149aabd | 1943 | { |
cc485e62 DE |
1944 | if (symbol_lookup_debug > 1) |
1945 | { | |
1946 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1947 | SYMBOL_PRINT_NAME (sym), | |
1948 | host_address_to_string (sym), | |
1949 | host_address_to_string (block)); | |
1950 | } | |
d12307c1 | 1951 | return (struct block_symbol) {sym, block}; |
f149aabd | 1952 | } |
66a17cb6 | 1953 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1954 | break; |
66a17cb6 TT |
1955 | block = BLOCK_SUPERBLOCK (block); |
1956 | } | |
03de6823 | 1957 | |
cc485e62 DE |
1958 | if (symbol_lookup_debug > 1) |
1959 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 1960 | return {}; |
66a17cb6 TT |
1961 | } |
1962 | ||
2dc3df72 TT |
1963 | /* Given TYPE, a structure/union, |
1964 | return 1 if the component named NAME from the ultimate target | |
1965 | structure/union is defined, otherwise, return 0. */ | |
1966 | ||
1967 | static int | |
1993b719 TT |
1968 | check_field (struct type *type, const char *name, |
1969 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1970 | { |
1971 | int i; | |
1972 | ||
1973 | /* The type may be a stub. */ | |
f168693b | 1974 | type = check_typedef (type); |
2dc3df72 TT |
1975 | |
1976 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1977 | { | |
1978 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1979 | ||
1980 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1981 | { |
1982 | is_a_field_of_this->type = type; | |
1983 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1984 | return 1; | |
1985 | } | |
2dc3df72 TT |
1986 | } |
1987 | ||
1988 | /* C++: If it was not found as a data field, then try to return it | |
1989 | as a pointer to a method. */ | |
1990 | ||
1991 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1992 | { | |
1993 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1994 | { |
1995 | is_a_field_of_this->type = type; | |
1996 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1997 | return 1; | |
1998 | } | |
2dc3df72 TT |
1999 | } |
2000 | ||
2001 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 2002 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
2003 | return 1; |
2004 | ||
2005 | return 0; | |
2006 | } | |
2007 | ||
53c5240f | 2008 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 2009 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 2010 | |
d12307c1 | 2011 | static struct block_symbol |
de63c46b PA |
2012 | lookup_symbol_aux (const char *name, symbol_name_match_type match_type, |
2013 | const struct block *block, | |
94af9270 | 2014 | const domain_enum domain, enum language language, |
1993b719 | 2015 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 2016 | { |
d12307c1 | 2017 | struct block_symbol result; |
53c5240f | 2018 | const struct language_defn *langdef; |
406bc4de | 2019 | |
cc485e62 DE |
2020 | if (symbol_lookup_debug) |
2021 | { | |
2022 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2023 | ||
2024 | fprintf_unfiltered (gdb_stdlog, | |
2025 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2026 | name, host_address_to_string (block), | |
2027 | objfile != NULL | |
2028 | ? objfile_debug_name (objfile) : "NULL", | |
2029 | domain_name (domain), language_str (language)); | |
2030 | } | |
2031 | ||
9a146a11 EZ |
2032 | /* Make sure we do something sensible with is_a_field_of_this, since |
2033 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2034 | certainly use it later. If we don't set it, the contents of |
2035 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2036 | if (is_a_field_of_this != NULL) |
1993b719 | 2037 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2038 | |
e4051eeb DC |
2039 | /* Search specified block and its superiors. Don't search |
2040 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2041 | |
de63c46b | 2042 | result = lookup_local_symbol (name, match_type, block, domain, language); |
d12307c1 | 2043 | if (result.symbol != NULL) |
cc485e62 DE |
2044 | { |
2045 | if (symbol_lookup_debug) | |
2046 | { | |
2047 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2048 | host_address_to_string (result.symbol)); |
cc485e62 | 2049 | } |
d12307c1 | 2050 | return result; |
cc485e62 | 2051 | } |
c906108c | 2052 | |
53c5240f | 2053 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2054 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2055 | |
2056 | langdef = language_def (language); | |
5f9a71c3 | 2057 | |
6592e36f TT |
2058 | /* Don't do this check if we are searching for a struct. It will |
2059 | not be found by check_field, but will be found by other | |
2060 | means. */ | |
2061 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2062 | { |
d12307c1 | 2063 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2064 | |
d12307c1 | 2065 | if (result.symbol) |
c906108c | 2066 | { |
d12307c1 | 2067 | struct type *t = result.symbol->type; |
9af17804 | 2068 | |
2b2d9e11 VP |
2069 | /* I'm not really sure that type of this can ever |
2070 | be typedefed; just be safe. */ | |
f168693b | 2071 | t = check_typedef (t); |
aa006118 | 2072 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2073 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2074 | |
2b2d9e11 VP |
2075 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2076 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2077 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2078 | langdef->la_name_of_this); |
9af17804 | 2079 | |
1993b719 | 2080 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2081 | { |
2082 | if (symbol_lookup_debug) | |
2083 | { | |
2084 | fprintf_unfiltered (gdb_stdlog, | |
2085 | "lookup_symbol_aux (...) = NULL\n"); | |
2086 | } | |
6640a367 | 2087 | return {}; |
cc485e62 | 2088 | } |
c906108c SS |
2089 | } |
2090 | } | |
2091 | ||
53c5240f | 2092 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2093 | up static and global variables. */ |
c906108c | 2094 | |
d12307c1 PMR |
2095 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2096 | if (result.symbol != NULL) | |
cc485e62 DE |
2097 | { |
2098 | if (symbol_lookup_debug) | |
2099 | { | |
2100 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2101 | host_address_to_string (result.symbol)); |
cc485e62 | 2102 | } |
d12307c1 | 2103 | return result; |
cc485e62 | 2104 | } |
c906108c | 2105 | |
774b6a14 TT |
2106 | /* Now search all static file-level symbols. Not strictly correct, |
2107 | but more useful than an error. */ | |
41f62f39 | 2108 | |
d12307c1 | 2109 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2110 | if (symbol_lookup_debug) |
2111 | { | |
2112 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2113 | result.symbol != NULL |
2114 | ? host_address_to_string (result.symbol) | |
2115 | : "NULL"); | |
cc485e62 | 2116 | } |
d12307c1 | 2117 | return result; |
41f62f39 JK |
2118 | } |
2119 | ||
e4051eeb | 2120 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2121 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2122 | |
d12307c1 | 2123 | static struct block_symbol |
de63c46b PA |
2124 | lookup_local_symbol (const char *name, |
2125 | symbol_name_match_type match_type, | |
2126 | const struct block *block, | |
74016e12 DE |
2127 | const domain_enum domain, |
2128 | enum language language) | |
8155455b DC |
2129 | { |
2130 | struct symbol *sym; | |
89a9d1b1 | 2131 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2132 | const char *scope = block_scope (block); |
2133 | ||
e4051eeb DC |
2134 | /* Check if either no block is specified or it's a global block. */ |
2135 | ||
89a9d1b1 | 2136 | if (static_block == NULL) |
6640a367 | 2137 | return {}; |
e4051eeb | 2138 | |
89a9d1b1 | 2139 | while (block != static_block) |
f61e8913 | 2140 | { |
de63c46b | 2141 | sym = lookup_symbol_in_block (name, match_type, block, domain); |
f61e8913 | 2142 | if (sym != NULL) |
d12307c1 | 2143 | return (struct block_symbol) {sym, block}; |
edb3359d | 2144 | |
f55ee35c | 2145 | if (language == language_cplus || language == language_fortran) |
13387711 | 2146 | { |
b926417a | 2147 | struct block_symbol blocksym |
d12307c1 PMR |
2148 | = cp_lookup_symbol_imports_or_template (scope, name, block, |
2149 | domain); | |
2150 | ||
b926417a TT |
2151 | if (blocksym.symbol != NULL) |
2152 | return blocksym; | |
13387711 SW |
2153 | } |
2154 | ||
edb3359d DJ |
2155 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2156 | break; | |
f61e8913 DC |
2157 | block = BLOCK_SUPERBLOCK (block); |
2158 | } | |
2159 | ||
3aee438b | 2160 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2161 | |
6640a367 | 2162 | return {}; |
f61e8913 DC |
2163 | } |
2164 | ||
cf901d3b | 2165 | /* See symtab.h. */ |
3a40aaa0 | 2166 | |
c0201579 | 2167 | struct objfile * |
3a40aaa0 UW |
2168 | lookup_objfile_from_block (const struct block *block) |
2169 | { | |
3a40aaa0 UW |
2170 | if (block == NULL) |
2171 | return NULL; | |
2172 | ||
2173 | block = block_global_block (block); | |
43f3e411 | 2174 | /* Look through all blockvectors. */ |
2030c079 | 2175 | for (objfile *obj : current_program_space->objfiles ()) |
d8aeb77f | 2176 | { |
b669c953 | 2177 | for (compunit_symtab *cust : obj->compunits ()) |
d8aeb77f TT |
2178 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), |
2179 | GLOBAL_BLOCK)) | |
2180 | { | |
2181 | if (obj->separate_debug_objfile_backlink) | |
2182 | obj = obj->separate_debug_objfile_backlink; | |
61f0d762 | 2183 | |
d8aeb77f TT |
2184 | return obj; |
2185 | } | |
2186 | } | |
3a40aaa0 UW |
2187 | |
2188 | return NULL; | |
2189 | } | |
2190 | ||
cf901d3b | 2191 | /* See symtab.h. */ |
f61e8913 | 2192 | |
5f9a71c3 | 2193 | struct symbol * |
de63c46b PA |
2194 | lookup_symbol_in_block (const char *name, symbol_name_match_type match_type, |
2195 | const struct block *block, | |
d1a2d36d | 2196 | const domain_enum domain) |
f61e8913 DC |
2197 | { |
2198 | struct symbol *sym; | |
f61e8913 | 2199 | |
cc485e62 DE |
2200 | if (symbol_lookup_debug > 1) |
2201 | { | |
2202 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2203 | ||
2204 | fprintf_unfiltered (gdb_stdlog, | |
2205 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2206 | name, host_address_to_string (block), | |
2207 | objfile_debug_name (objfile), | |
2208 | domain_name (domain)); | |
2209 | } | |
2210 | ||
de63c46b | 2211 | sym = block_lookup_symbol (block, name, match_type, domain); |
f61e8913 | 2212 | if (sym) |
8155455b | 2213 | { |
cc485e62 DE |
2214 | if (symbol_lookup_debug > 1) |
2215 | { | |
2216 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2217 | host_address_to_string (sym)); | |
2218 | } | |
21b556f4 | 2219 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2220 | } |
2221 | ||
cc485e62 DE |
2222 | if (symbol_lookup_debug > 1) |
2223 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2224 | return NULL; |
2225 | } | |
2226 | ||
cf901d3b | 2227 | /* See symtab.h. */ |
3a40aaa0 | 2228 | |
d12307c1 | 2229 | struct block_symbol |
efad9b6a | 2230 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
442853af | 2231 | enum block_enum block_index, |
3a40aaa0 | 2232 | const char *name, |
21b556f4 | 2233 | const domain_enum domain) |
3a40aaa0 | 2234 | { |
442853af CB |
2235 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2236 | ||
bde09ab7 | 2237 | for (objfile *objfile : main_objfile->separate_debug_objfiles ()) |
15d123c9 | 2238 | { |
d12307c1 | 2239 | struct block_symbol result |
442853af | 2240 | = lookup_symbol_in_objfile (objfile, block_index, name, domain); |
15d123c9 | 2241 | |
442853af | 2242 | if (result.symbol != nullptr) |
d12307c1 | 2243 | return result; |
15d123c9 | 2244 | } |
56e3f43c | 2245 | |
6640a367 | 2246 | return {}; |
3a40aaa0 UW |
2247 | } |
2248 | ||
19630284 JB |
2249 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2250 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2251 | depending on whether or not we want to search global symbols or |
2252 | static symbols. */ | |
2253 | ||
d12307c1 | 2254 | static struct block_symbol |
c32e6a04 CB |
2255 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, |
2256 | enum block_enum block_index, const char *name, | |
2257 | const domain_enum domain) | |
19630284 | 2258 | { |
ba715d7f JK |
2259 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2260 | ||
cc485e62 DE |
2261 | if (symbol_lookup_debug > 1) |
2262 | { | |
2263 | fprintf_unfiltered (gdb_stdlog, | |
2264 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2265 | objfile_debug_name (objfile), | |
2266 | block_index == GLOBAL_BLOCK | |
2267 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2268 | name, domain_name (domain)); | |
2269 | } | |
2270 | ||
b669c953 | 2271 | for (compunit_symtab *cust : objfile->compunits ()) |
a743abeb | 2272 | { |
43f3e411 DE |
2273 | const struct blockvector *bv; |
2274 | const struct block *block; | |
d12307c1 | 2275 | struct block_symbol result; |
43f3e411 DE |
2276 | |
2277 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2278 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2279 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2280 | result.block = block; | |
2281 | if (result.symbol != NULL) | |
a743abeb | 2282 | { |
cc485e62 DE |
2283 | if (symbol_lookup_debug > 1) |
2284 | { | |
2285 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2286 | host_address_to_string (result.symbol), |
cc485e62 DE |
2287 | host_address_to_string (block)); |
2288 | } | |
d12307c1 PMR |
2289 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2290 | return result; | |
2291 | ||
a743abeb DE |
2292 | } |
2293 | } | |
19630284 | 2294 | |
cc485e62 DE |
2295 | if (symbol_lookup_debug > 1) |
2296 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
6640a367 | 2297 | return {}; |
19630284 JB |
2298 | } |
2299 | ||
74016e12 | 2300 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2301 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2302 | and all associated separate debug objfiles. |
2303 | ||
2304 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2305 | because the outer loop will cause them to be searched too. This case is | |
2306 | different. Here we're called from search_symbols where it will only | |
6471e7d2 | 2307 | call us for the objfile that contains a matching minsym. */ |
422d65e7 | 2308 | |
d12307c1 | 2309 | static struct block_symbol |
422d65e7 DE |
2310 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2311 | const char *linkage_name, | |
2312 | domain_enum domain) | |
2313 | { | |
2314 | enum language lang = current_language->la_language; | |
e9ad22ee | 2315 | struct objfile *main_objfile; |
422d65e7 | 2316 | |
2f408ecb PA |
2317 | demangle_result_storage storage; |
2318 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2319 | ||
422d65e7 DE |
2320 | if (objfile->separate_debug_objfile_backlink) |
2321 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2322 | else | |
2323 | main_objfile = objfile; | |
2324 | ||
bde09ab7 | 2325 | for (::objfile *cur_objfile : main_objfile->separate_debug_objfiles ()) |
422d65e7 | 2326 | { |
d12307c1 PMR |
2327 | struct block_symbol result; |
2328 | ||
2329 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2330 | modified_name, domain); | |
2331 | if (result.symbol == NULL) | |
2332 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2333 | modified_name, domain); | |
2334 | if (result.symbol != NULL) | |
2f408ecb | 2335 | return result; |
422d65e7 DE |
2336 | } |
2337 | ||
6640a367 | 2338 | return {}; |
422d65e7 DE |
2339 | } |
2340 | ||
08c23b0d TT |
2341 | /* A helper function that throws an exception when a symbol was found |
2342 | in a psymtab but not in a symtab. */ | |
2343 | ||
2344 | static void ATTRIBUTE_NORETURN | |
ddbcedf5 | 2345 | error_in_psymtab_expansion (enum block_enum block_index, const char *name, |
43f3e411 | 2346 | struct compunit_symtab *cust) |
08c23b0d TT |
2347 | { |
2348 | error (_("\ | |
2349 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2350 | %s may be an inlined function, or may be a template function\n \ | |
2351 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2352 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2353 | name, |
2354 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2355 | name, name); | |
08c23b0d TT |
2356 | } |
2357 | ||
74016e12 DE |
2358 | /* A helper function for various lookup routines that interfaces with |
2359 | the "quick" symbol table functions. */ | |
8155455b | 2360 | |
d12307c1 | 2361 | static struct block_symbol |
ddbcedf5 CB |
2362 | lookup_symbol_via_quick_fns (struct objfile *objfile, |
2363 | enum block_enum block_index, const char *name, | |
2364 | const domain_enum domain) | |
8155455b | 2365 | { |
43f3e411 | 2366 | struct compunit_symtab *cust; |
346d1dfe | 2367 | const struct blockvector *bv; |
8155455b | 2368 | const struct block *block; |
d12307c1 | 2369 | struct block_symbol result; |
8155455b | 2370 | |
ccefe4c4 | 2371 | if (!objfile->sf) |
6640a367 | 2372 | return {}; |
cc485e62 DE |
2373 | |
2374 | if (symbol_lookup_debug > 1) | |
2375 | { | |
2376 | fprintf_unfiltered (gdb_stdlog, | |
2377 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2378 | objfile_debug_name (objfile), | |
2379 | block_index == GLOBAL_BLOCK | |
2380 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2381 | name, domain_name (domain)); | |
2382 | } | |
2383 | ||
43f3e411 DE |
2384 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2385 | if (cust == NULL) | |
cc485e62 DE |
2386 | { |
2387 | if (symbol_lookup_debug > 1) | |
2388 | { | |
2389 | fprintf_unfiltered (gdb_stdlog, | |
2390 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2391 | } | |
6640a367 | 2392 | return {}; |
cc485e62 | 2393 | } |
8155455b | 2394 | |
43f3e411 | 2395 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2396 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
de63c46b PA |
2397 | result.symbol = block_lookup_symbol (block, name, |
2398 | symbol_name_match_type::FULL, domain); | |
d12307c1 | 2399 | if (result.symbol == NULL) |
43f3e411 | 2400 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2401 | |
2402 | if (symbol_lookup_debug > 1) | |
2403 | { | |
2404 | fprintf_unfiltered (gdb_stdlog, | |
2405 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2406 | host_address_to_string (result.symbol), |
cc485e62 DE |
2407 | host_address_to_string (block)); |
2408 | } | |
2409 | ||
d12307c1 PMR |
2410 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2411 | result.block = block; | |
2412 | return result; | |
8155455b DC |
2413 | } |
2414 | ||
cf901d3b | 2415 | /* See symtab.h. */ |
5f9a71c3 | 2416 | |
d12307c1 | 2417 | struct block_symbol |
f606139a DE |
2418 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2419 | const char *name, | |
5f9a71c3 | 2420 | const struct block *block, |
21b556f4 | 2421 | const domain_enum domain) |
5f9a71c3 | 2422 | { |
d12307c1 | 2423 | struct block_symbol result; |
5f9a71c3 | 2424 | |
d9060ba6 DE |
2425 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2426 | the current objfile. Searching the current objfile first is useful | |
2427 | for both matching user expectations as well as performance. */ | |
2428 | ||
d12307c1 PMR |
2429 | result = lookup_symbol_in_static_block (name, block, domain); |
2430 | if (result.symbol != NULL) | |
2431 | return result; | |
5f9a71c3 | 2432 | |
1994afbf DE |
2433 | /* If we didn't find a definition for a builtin type in the static block, |
2434 | search for it now. This is actually the right thing to do and can be | |
2435 | a massive performance win. E.g., when debugging a program with lots of | |
2436 | shared libraries we could search all of them only to find out the | |
2437 | builtin type isn't defined in any of them. This is common for types | |
2438 | like "void". */ | |
2439 | if (domain == VAR_DOMAIN) | |
2440 | { | |
2441 | struct gdbarch *gdbarch; | |
2442 | ||
2443 | if (block == NULL) | |
2444 | gdbarch = target_gdbarch (); | |
2445 | else | |
2446 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2447 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2448 | gdbarch, name); | |
2449 | result.block = NULL; | |
2450 | if (result.symbol != NULL) | |
2451 | return result; | |
1994afbf DE |
2452 | } |
2453 | ||
08724ab7 | 2454 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2455 | } |
2456 | ||
cf901d3b | 2457 | /* See symtab.h. */ |
5f9a71c3 | 2458 | |
d12307c1 | 2459 | struct block_symbol |
24d864bb DE |
2460 | lookup_symbol_in_static_block (const char *name, |
2461 | const struct block *block, | |
2462 | const domain_enum domain) | |
5f9a71c3 DC |
2463 | { |
2464 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2465 | struct symbol *sym; |
5f9a71c3 | 2466 | |
cc485e62 | 2467 | if (static_block == NULL) |
6640a367 | 2468 | return {}; |
cc485e62 DE |
2469 | |
2470 | if (symbol_lookup_debug) | |
2471 | { | |
2472 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2473 | ||
2474 | fprintf_unfiltered (gdb_stdlog, | |
2475 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2476 | " %s)\n", | |
2477 | name, | |
2478 | host_address_to_string (block), | |
2479 | objfile_debug_name (objfile), | |
2480 | domain_name (domain)); | |
2481 | } | |
2482 | ||
de63c46b PA |
2483 | sym = lookup_symbol_in_block (name, |
2484 | symbol_name_match_type::FULL, | |
2485 | static_block, domain); | |
cc485e62 DE |
2486 | if (symbol_lookup_debug) |
2487 | { | |
2488 | fprintf_unfiltered (gdb_stdlog, | |
2489 | "lookup_symbol_in_static_block (...) = %s\n", | |
2490 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2491 | } | |
d12307c1 | 2492 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2493 | } |
2494 | ||
af3768e9 DE |
2495 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2496 | 1) First search expanded symtabs, and if not found | |
2497 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2498 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2499 | ||
d12307c1 | 2500 | static struct block_symbol |
c32e6a04 | 2501 | lookup_symbol_in_objfile (struct objfile *objfile, enum block_enum block_index, |
af3768e9 DE |
2502 | const char *name, const domain_enum domain) |
2503 | { | |
d12307c1 | 2504 | struct block_symbol result; |
af3768e9 | 2505 | |
c32e6a04 CB |
2506 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2507 | ||
cc485e62 DE |
2508 | if (symbol_lookup_debug) |
2509 | { | |
2510 | fprintf_unfiltered (gdb_stdlog, | |
2511 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2512 | objfile_debug_name (objfile), | |
2513 | block_index == GLOBAL_BLOCK | |
2514 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2515 | name, domain_name (domain)); | |
2516 | } | |
2517 | ||
af3768e9 DE |
2518 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2519 | name, domain); | |
d12307c1 | 2520 | if (result.symbol != NULL) |
af3768e9 | 2521 | { |
cc485e62 DE |
2522 | if (symbol_lookup_debug) |
2523 | { | |
2524 | fprintf_unfiltered (gdb_stdlog, | |
2525 | "lookup_symbol_in_objfile (...) = %s" | |
2526 | " (in symtabs)\n", | |
d12307c1 | 2527 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2528 | } |
2529 | return result; | |
af3768e9 DE |
2530 | } |
2531 | ||
cc485e62 DE |
2532 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2533 | name, domain); | |
2534 | if (symbol_lookup_debug) | |
2535 | { | |
2536 | fprintf_unfiltered (gdb_stdlog, | |
2537 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2538 | result.symbol != NULL |
2539 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2540 | : "NULL", |
d12307c1 | 2541 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2542 | } |
af3768e9 DE |
2543 | return result; |
2544 | } | |
2545 | ||
19630284 JB |
2546 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2547 | ||
9aa55206 | 2548 | struct global_or_static_sym_lookup_data |
19630284 JB |
2549 | { |
2550 | /* The name of the symbol we are searching for. */ | |
2551 | const char *name; | |
2552 | ||
2553 | /* The domain to use for our search. */ | |
2554 | domain_enum domain; | |
2555 | ||
9aa55206 CB |
2556 | /* The block index in which to search. */ |
2557 | enum block_enum block_index; | |
2558 | ||
19630284 | 2559 | /* The field where the callback should store the symbol if found. |
d12307c1 PMR |
2560 | It should be initialized to {NULL, NULL} before the search is started. */ |
2561 | struct block_symbol result; | |
19630284 JB |
2562 | }; |
2563 | ||
2564 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
9aa55206 CB |
2565 | It searches by name for a symbol in the block given by BLOCK_INDEX of the |
2566 | given OBJFILE. The arguments for the search are passed via CB_DATA, which | |
2567 | in reality is a pointer to struct global_or_static_sym_lookup_data. */ | |
19630284 JB |
2568 | |
2569 | static int | |
9aa55206 CB |
2570 | lookup_symbol_global_or_static_iterator_cb (struct objfile *objfile, |
2571 | void *cb_data) | |
19630284 | 2572 | { |
9aa55206 CB |
2573 | struct global_or_static_sym_lookup_data *data = |
2574 | (struct global_or_static_sym_lookup_data *) cb_data; | |
19630284 | 2575 | |
d12307c1 PMR |
2576 | gdb_assert (data->result.symbol == NULL |
2577 | && data->result.block == NULL); | |
19630284 | 2578 | |
9aa55206 | 2579 | data->result = lookup_symbol_in_objfile (objfile, data->block_index, |
af3768e9 | 2580 | data->name, data->domain); |
19630284 JB |
2581 | |
2582 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2583 | keep going. */ | |
d12307c1 | 2584 | return (data->result.symbol != NULL); |
19630284 JB |
2585 | } |
2586 | ||
9aa55206 CB |
2587 | /* This function contains the common code of lookup_{global,static}_symbol. |
2588 | OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is | |
2589 | the objfile to start the lookup in. */ | |
5f9a71c3 | 2590 | |
9aa55206 CB |
2591 | static struct block_symbol |
2592 | lookup_global_or_static_symbol (const char *name, | |
2593 | enum block_enum block_index, | |
2594 | struct objfile *objfile, | |
2595 | const domain_enum domain) | |
5f9a71c3 | 2596 | { |
f57d2163 | 2597 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2598 | struct block_symbol result; |
9aa55206 | 2599 | struct global_or_static_sym_lookup_data lookup_data; |
f57d2163 DE |
2600 | struct block_symbol_cache *bsc; |
2601 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2602 | |
9aa55206 CB |
2603 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2604 | gdb_assert (objfile == nullptr || block_index == GLOBAL_BLOCK); | |
f57d2163 DE |
2605 | |
2606 | /* First see if we can find the symbol in the cache. | |
2607 | This works because we use the current objfile to qualify the lookup. */ | |
9aa55206 | 2608 | result = symbol_cache_lookup (cache, objfile, block_index, name, domain, |
d12307c1 PMR |
2609 | &bsc, &slot); |
2610 | if (result.symbol != NULL) | |
f57d2163 | 2611 | { |
d12307c1 | 2612 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
6640a367 | 2613 | return {}; |
d12307c1 | 2614 | return result; |
f57d2163 DE |
2615 | } |
2616 | ||
626ca2c0 | 2617 | /* Do a global search (of global blocks, heh). */ |
d12307c1 | 2618 | if (result.symbol == NULL) |
f57d2163 DE |
2619 | { |
2620 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2621 | lookup_data.name = name; | |
9aa55206 | 2622 | lookup_data.block_index = block_index; |
f57d2163 DE |
2623 | lookup_data.domain = domain; |
2624 | gdbarch_iterate_over_objfiles_in_search_order | |
2625 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
9aa55206 | 2626 | lookup_symbol_global_or_static_iterator_cb, &lookup_data, objfile); |
d12307c1 | 2627 | result = lookup_data.result; |
f57d2163 | 2628 | } |
6a3ca067 | 2629 | |
d12307c1 PMR |
2630 | if (result.symbol != NULL) |
2631 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2632 | else |
2633 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2634 | ||
d12307c1 | 2635 | return result; |
5f9a71c3 DC |
2636 | } |
2637 | ||
9aa55206 CB |
2638 | /* See symtab.h. */ |
2639 | ||
2640 | struct block_symbol | |
2641 | lookup_static_symbol (const char *name, const domain_enum domain) | |
2642 | { | |
2643 | return lookup_global_or_static_symbol (name, STATIC_BLOCK, nullptr, domain); | |
2644 | } | |
2645 | ||
2646 | /* See symtab.h. */ | |
2647 | ||
2648 | struct block_symbol | |
2649 | lookup_global_symbol (const char *name, | |
2650 | const struct block *block, | |
2651 | const domain_enum domain) | |
2652 | { | |
d3d32391 AB |
2653 | /* If a block was passed in, we want to search the corresponding |
2654 | global block first. This yields "more expected" behavior, and is | |
2655 | needed to support 'FILENAME'::VARIABLE lookups. */ | |
2656 | const struct block *global_block = block_global_block (block); | |
2657 | if (global_block != nullptr) | |
2658 | { | |
2659 | symbol *sym = lookup_symbol_in_block (name, | |
2660 | symbol_name_match_type::FULL, | |
2661 | global_block, domain); | |
2662 | if (sym != nullptr) | |
2663 | return { sym, global_block }; | |
2664 | } | |
2665 | ||
9aa55206 CB |
2666 | struct objfile *objfile = lookup_objfile_from_block (block); |
2667 | return lookup_global_or_static_symbol (name, GLOBAL_BLOCK, objfile, domain); | |
2668 | } | |
2669 | ||
ececd218 | 2670 | bool |
4186eb54 KS |
2671 | symbol_matches_domain (enum language symbol_language, |
2672 | domain_enum symbol_domain, | |
2673 | domain_enum domain) | |
2674 | { | |
2675 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2676 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2677 | if (symbol_language == language_cplus | |
2678 | || symbol_language == language_d | |
65547233 TT |
2679 | || symbol_language == language_ada |
2680 | || symbol_language == language_rust) | |
4186eb54 KS |
2681 | { |
2682 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2683 | && symbol_domain == STRUCT_DOMAIN) | |
ececd218 | 2684 | return true; |
4186eb54 KS |
2685 | } |
2686 | /* For all other languages, strict match is required. */ | |
2687 | return (symbol_domain == domain); | |
2688 | } | |
2689 | ||
cf901d3b | 2690 | /* See symtab.h. */ |
c906108c | 2691 | |
ccefe4c4 TT |
2692 | struct type * |
2693 | lookup_transparent_type (const char *name) | |
c906108c | 2694 | { |
ccefe4c4 TT |
2695 | return current_language->la_lookup_transparent_type (name); |
2696 | } | |
9af17804 | 2697 | |
ccefe4c4 TT |
2698 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2699 | "quick" symbol table functions. */ | |
357e46e7 | 2700 | |
ccefe4c4 | 2701 | static struct type * |
ddbcedf5 CB |
2702 | basic_lookup_transparent_type_quick (struct objfile *objfile, |
2703 | enum block_enum block_index, | |
ccefe4c4 TT |
2704 | const char *name) |
2705 | { | |
43f3e411 | 2706 | struct compunit_symtab *cust; |
346d1dfe | 2707 | const struct blockvector *bv; |
582942f4 | 2708 | const struct block *block; |
ccefe4c4 | 2709 | struct symbol *sym; |
c906108c | 2710 | |
ccefe4c4 TT |
2711 | if (!objfile->sf) |
2712 | return NULL; | |
43f3e411 DE |
2713 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2714 | STRUCT_DOMAIN); | |
2715 | if (cust == NULL) | |
ccefe4c4 | 2716 | return NULL; |
c906108c | 2717 | |
43f3e411 | 2718 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2719 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2720 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2721 | block_find_non_opaque_type, NULL); | |
2722 | if (sym == NULL) | |
43f3e411 | 2723 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2724 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2725 | return SYMBOL_TYPE (sym); | |
2726 | } | |
08c23b0d | 2727 | |
b2e2f908 DE |
2728 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2729 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2730 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2731 | ||
2732 | static struct type * | |
ddbcedf5 CB |
2733 | basic_lookup_transparent_type_1 (struct objfile *objfile, |
2734 | enum block_enum block_index, | |
b2e2f908 DE |
2735 | const char *name) |
2736 | { | |
b2e2f908 DE |
2737 | const struct blockvector *bv; |
2738 | const struct block *block; | |
2739 | const struct symbol *sym; | |
2740 | ||
b669c953 | 2741 | for (compunit_symtab *cust : objfile->compunits ()) |
b2e2f908 DE |
2742 | { |
2743 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2744 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2745 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2746 | block_find_non_opaque_type, NULL); | |
2747 | if (sym != NULL) | |
2748 | { | |
2749 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2750 | return SYMBOL_TYPE (sym); | |
2751 | } | |
2752 | } | |
c906108c | 2753 | |
ccefe4c4 | 2754 | return NULL; |
b368761e | 2755 | } |
c906108c | 2756 | |
b368761e DC |
2757 | /* The standard implementation of lookup_transparent_type. This code |
2758 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2759 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2760 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2761 | global blocks. */ |
c906108c SS |
2762 | |
2763 | struct type * | |
b368761e | 2764 | basic_lookup_transparent_type (const char *name) |
c906108c | 2765 | { |
ccefe4c4 | 2766 | struct type *t; |
c906108c SS |
2767 | |
2768 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2769 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2770 | of the desired name as a global, then do psymtab-to-symtab |
2771 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2772 | |
2030c079 | 2773 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2774 | { |
2775 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); | |
2776 | if (t) | |
2777 | return t; | |
2778 | } | |
c906108c | 2779 | |
2030c079 | 2780 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2781 | { |
2782 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); | |
2783 | if (t) | |
2784 | return t; | |
2785 | } | |
c906108c SS |
2786 | |
2787 | /* Now search the static file-level symbols. | |
2788 | Not strictly correct, but more useful than an error. | |
2789 | Do the symtab's first, then | |
c378eb4e | 2790 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2791 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2792 | conversion on the fly and return the found symbol. */ |
c906108c | 2793 | |
2030c079 | 2794 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2795 | { |
2796 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); | |
2797 | if (t) | |
2798 | return t; | |
2799 | } | |
c906108c | 2800 | |
2030c079 | 2801 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2802 | { |
2803 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); | |
2804 | if (t) | |
2805 | return t; | |
2806 | } | |
ccefe4c4 | 2807 | |
c906108c SS |
2808 | return (struct type *) 0; |
2809 | } | |
2810 | ||
6969f124 | 2811 | /* See symtab.h. */ |
f8eba3c6 | 2812 | |
6969f124 | 2813 | bool |
b5ec771e PA |
2814 | iterate_over_symbols (const struct block *block, |
2815 | const lookup_name_info &name, | |
f8eba3c6 | 2816 | const domain_enum domain, |
14bc53a8 | 2817 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2818 | { |
4eeaa230 DE |
2819 | struct block_iterator iter; |
2820 | struct symbol *sym; | |
f8eba3c6 | 2821 | |
358d6ab3 | 2822 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2823 | { |
4186eb54 KS |
2824 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2825 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2826 | { |
7e41c8db KS |
2827 | struct block_symbol block_sym = {sym, block}; |
2828 | ||
2829 | if (!callback (&block_sym)) | |
6969f124 | 2830 | return false; |
f8eba3c6 | 2831 | } |
f8eba3c6 | 2832 | } |
6969f124 | 2833 | return true; |
f8eba3c6 TT |
2834 | } |
2835 | ||
6a3dbf1b TT |
2836 | /* See symtab.h. */ |
2837 | ||
2838 | bool | |
2839 | iterate_over_symbols_terminated | |
2840 | (const struct block *block, | |
2841 | const lookup_name_info &name, | |
2842 | const domain_enum domain, | |
2843 | gdb::function_view<symbol_found_callback_ftype> callback) | |
2844 | { | |
2845 | if (!iterate_over_symbols (block, name, domain, callback)) | |
2846 | return false; | |
2847 | struct block_symbol block_sym = {nullptr, block}; | |
2848 | return callback (&block_sym); | |
2849 | } | |
2850 | ||
43f3e411 DE |
2851 | /* Find the compunit symtab associated with PC and SECTION. |
2852 | This will read in debug info as necessary. */ | |
c906108c | 2853 | |
43f3e411 DE |
2854 | struct compunit_symtab * |
2855 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2856 | { |
43f3e411 | 2857 | struct compunit_symtab *best_cust = NULL; |
c906108c | 2858 | CORE_ADDR distance = 0; |
77e371c0 | 2859 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2860 | |
2861 | /* If we know that this is not a text address, return failure. This is | |
2862 | necessary because we loop based on the block's high and low code | |
2863 | addresses, which do not include the data ranges, and because | |
2864 | we call find_pc_sect_psymtab which has a similar restriction based | |
2865 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 | 2866 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1ed9f74e | 2867 | if (msymbol.minsym && msymbol.minsym->data_p ()) |
8a48e967 | 2868 | return NULL; |
c906108c SS |
2869 | |
2870 | /* Search all symtabs for the one whose file contains our address, and which | |
2871 | is the smallest of all the ones containing the address. This is designed | |
2872 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2873 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2874 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2875 | ||
2876 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2877 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2878 | been read in already via the dependency mechanism. |
2879 | It might be swifter to create several symtabs with the same name | |
2880 | like xcoff does (I'm not sure). | |
2881 | ||
2882 | It also happens for objfiles that have their functions reordered. | |
2883 | For these, the symtab we are looking for is not necessarily read in. */ | |
2884 | ||
2030c079 | 2885 | for (objfile *obj_file : current_program_space->objfiles ()) |
d8aeb77f | 2886 | { |
b669c953 | 2887 | for (compunit_symtab *cust : obj_file->compunits ()) |
d8aeb77f | 2888 | { |
582942f4 | 2889 | const struct block *b; |
d8aeb77f | 2890 | const struct blockvector *bv; |
43f3e411 | 2891 | |
d8aeb77f TT |
2892 | bv = COMPUNIT_BLOCKVECTOR (cust); |
2893 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2894 | |
d8aeb77f TT |
2895 | if (BLOCK_START (b) <= pc |
2896 | && BLOCK_END (b) > pc | |
2897 | && (distance == 0 | |
2898 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2899 | { | |
2900 | /* For an objfile that has its functions reordered, | |
2901 | find_pc_psymtab will find the proper partial symbol table | |
2902 | and we simply return its corresponding symtab. */ | |
2903 | /* In order to better support objfiles that contain both | |
2904 | stabs and coff debugging info, we continue on if a psymtab | |
2905 | can't be found. */ | |
2906 | if ((obj_file->flags & OBJF_REORDERED) && obj_file->sf) | |
2907 | { | |
2908 | struct compunit_symtab *result; | |
2909 | ||
2910 | result | |
2911 | = obj_file->sf->qf->find_pc_sect_compunit_symtab (obj_file, | |
2912 | msymbol, | |
2913 | pc, | |
2914 | section, | |
2915 | 0); | |
2916 | if (result != NULL) | |
2917 | return result; | |
2918 | } | |
2919 | if (section != 0) | |
2920 | { | |
2921 | struct block_iterator iter; | |
2922 | struct symbol *sym = NULL; | |
c906108c | 2923 | |
d8aeb77f TT |
2924 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
2925 | { | |
2926 | fixup_symbol_section (sym, obj_file); | |
2927 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file, | |
2928 | sym), | |
2929 | section)) | |
2930 | break; | |
2931 | } | |
2932 | if (sym == NULL) | |
2933 | continue; /* No symbol in this symtab matches | |
2934 | section. */ | |
2935 | } | |
2936 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2937 | best_cust = cust; | |
2938 | } | |
2939 | } | |
2940 | } | |
c906108c | 2941 | |
43f3e411 DE |
2942 | if (best_cust != NULL) |
2943 | return best_cust; | |
c906108c | 2944 | |
072cabfe DE |
2945 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2946 | ||
2030c079 | 2947 | for (objfile *objf : current_program_space->objfiles ()) |
aed57c53 TT |
2948 | { |
2949 | struct compunit_symtab *result; | |
2950 | ||
2951 | if (!objf->sf) | |
2952 | continue; | |
2953 | result = objf->sf->qf->find_pc_sect_compunit_symtab (objf, | |
2954 | msymbol, | |
2955 | pc, section, | |
2956 | 1); | |
2957 | if (result != NULL) | |
2958 | return result; | |
2959 | } | |
ccefe4c4 TT |
2960 | |
2961 | return NULL; | |
c906108c SS |
2962 | } |
2963 | ||
43f3e411 DE |
2964 | /* Find the compunit symtab associated with PC. |
2965 | This will read in debug info as necessary. | |
2966 | Backward compatibility, no section. */ | |
c906108c | 2967 | |
43f3e411 DE |
2968 | struct compunit_symtab * |
2969 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2970 | { |
43f3e411 | 2971 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2972 | } |
71a3c369 TT |
2973 | |
2974 | /* See symtab.h. */ | |
2975 | ||
2976 | struct symbol * | |
2977 | find_symbol_at_address (CORE_ADDR address) | |
2978 | { | |
2030c079 | 2979 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
2980 | { |
2981 | if (objfile->sf == NULL | |
2982 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
2983 | continue; | |
71a3c369 | 2984 | |
aed57c53 TT |
2985 | struct compunit_symtab *symtab |
2986 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
2987 | if (symtab != NULL) | |
2988 | { | |
2989 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
71a3c369 | 2990 | |
aed57c53 | 2991 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) |
71a3c369 | 2992 | { |
582942f4 | 2993 | const struct block *b = BLOCKVECTOR_BLOCK (bv, i); |
aed57c53 TT |
2994 | struct block_iterator iter; |
2995 | struct symbol *sym; | |
2996 | ||
2997 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
2998 | { | |
2999 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
3000 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
3001 | return sym; | |
3002 | } | |
71a3c369 | 3003 | } |
aed57c53 TT |
3004 | } |
3005 | } | |
71a3c369 TT |
3006 | |
3007 | return NULL; | |
3008 | } | |
3009 | ||
c906108c | 3010 | \f |
c5aa993b | 3011 | |
7e73cedf | 3012 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3013 | Return a structure containing a symtab pointer, a line number, |
3014 | and a pc range for the entire source line. | |
3015 | The value's .pc field is NOT the specified pc. | |
3016 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3017 | use the line that ends there. Otherwise, in that case, the line | |
3018 | that begins there is used. */ | |
3019 | ||
3020 | /* The big complication here is that a line may start in one file, and end just | |
3021 | before the start of another file. This usually occurs when you #include | |
3022 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3023 | range, we must search all symtabs associated with this compilation unit, and | |
3024 | find the one whose first PC is closer than that of the next line in this | |
3025 | symtab. */ | |
3026 | ||
c906108c | 3027 | struct symtab_and_line |
714835d5 | 3028 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3029 | { |
43f3e411 | 3030 | struct compunit_symtab *cust; |
52f0bd74 AC |
3031 | struct linetable *l; |
3032 | int len; | |
52f0bd74 | 3033 | struct linetable_entry *item; |
346d1dfe | 3034 | const struct blockvector *bv; |
7cbd4a93 | 3035 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3036 | |
3037 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3038 | ||
3039 | struct linetable_entry *best = NULL; | |
3040 | CORE_ADDR best_end = 0; | |
3041 | struct symtab *best_symtab = 0; | |
3042 | ||
3043 | /* Store here the first line number | |
3044 | of a file which contains the line at the smallest pc after PC. | |
3045 | If we don't find a line whose range contains PC, | |
3046 | we will use a line one less than this, | |
3047 | with a range from the start of that file to the first line's pc. */ | |
3048 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3049 | |
3050 | /* Info on best line seen in this file. */ | |
3051 | ||
3052 | struct linetable_entry *prev; | |
3053 | ||
3054 | /* If this pc is not from the current frame, | |
3055 | it is the address of the end of a call instruction. | |
3056 | Quite likely that is the start of the following statement. | |
3057 | But what we want is the statement containing the instruction. | |
3058 | Fudge the pc to make sure we get that. */ | |
3059 | ||
b77b1eb7 JB |
3060 | /* It's tempting to assume that, if we can't find debugging info for |
3061 | any function enclosing PC, that we shouldn't search for line | |
3062 | number info, either. However, GAS can emit line number info for | |
3063 | assembly files --- very helpful when debugging hand-written | |
3064 | assembly code. In such a case, we'd have no debug info for the | |
3065 | function, but we would have line info. */ | |
648f4f79 | 3066 | |
c906108c SS |
3067 | if (notcurrent) |
3068 | pc -= 1; | |
3069 | ||
c5aa993b | 3070 | /* elz: added this because this function returned the wrong |
c906108c | 3071 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3072 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3073 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3074 | taken to be the one of the line before the pc. */ |
3075 | ||
c906108c | 3076 | /* RT: Further explanation: |
c5aa993b | 3077 | |
c906108c SS |
3078 | * We have stubs (trampolines) inserted between procedures. |
3079 | * | |
3080 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3081 | * exists in the main image. | |
3082 | * | |
3083 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3084 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3085 | * the others appear as text. E.g.: |
3086 | * | |
9af17804 | 3087 | * Minimal symbol table for main image |
c906108c SS |
3088 | * main: code for main (text symbol) |
3089 | * shr1: stub (trampoline symbol) | |
3090 | * foo: code for foo (text symbol) | |
3091 | * ... | |
3092 | * Minimal symbol table for "shr1" image: | |
3093 | * ... | |
3094 | * shr1: code for shr1 (text symbol) | |
3095 | * ... | |
3096 | * | |
3097 | * So the code below is trying to detect if we are in the stub | |
3098 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3099 | * and if found, do the symbolization from the real-code address | |
3100 | * rather than the stub address. | |
3101 | * | |
3102 | * Assumptions being made about the minimal symbol table: | |
3103 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3104 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3105 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3106 | * symbol (the "foo" text symbol for example) and will not |
3107 | * return the trampoline. | |
3108 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3109 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3110 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3111 | * check for the address being the same, to avoid an |
3112 | * infinite recursion. | |
3113 | */ | |
c5aa993b | 3114 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3115 | if (msymbol.minsym != NULL) |
3116 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3117 | { |
77e371c0 | 3118 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3119 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3120 | NULL); |
3121 | ||
3122 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3123 | /* I eliminated this warning since it is coming out |
3124 | * in the following situation: | |
3125 | * gdb shmain // test program with shared libraries | |
3126 | * (gdb) break shr1 // function in shared lib | |
3127 | * Warning: In stub for ... | |
9af17804 | 3128 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3129 | * so of course we can't find the real func/line info, |
3130 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3131 | * So I commented out the warning. RT */ |
3e43a32a | 3132 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3133 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3134 | ; | |
c5aa993b | 3135 | /* fall through */ |
77e371c0 TT |
3136 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3137 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3138 | /* Avoid infinite recursion */ |
c378eb4e | 3139 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3140 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3141 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3142 | ; | |
c5aa993b JM |
3143 | /* fall through */ |
3144 | else | |
77e371c0 | 3145 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3146 | } |
c906108c | 3147 | |
51abb421 PA |
3148 | symtab_and_line val; |
3149 | val.pspace = current_program_space; | |
c906108c | 3150 | |
43f3e411 DE |
3151 | cust = find_pc_sect_compunit_symtab (pc, section); |
3152 | if (cust == NULL) | |
c906108c | 3153 | { |
c378eb4e | 3154 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3155 | if (notcurrent) |
3156 | pc++; | |
3157 | val.pc = pc; | |
3158 | return val; | |
3159 | } | |
3160 | ||
43f3e411 | 3161 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3162 | |
3163 | /* Look at all the symtabs that share this blockvector. | |
3164 | They all have the same apriori range, that we found was right; | |
3165 | but they have different line tables. */ | |
3166 | ||
5accd1a0 | 3167 | for (symtab *iter_s : compunit_filetabs (cust)) |
c906108c SS |
3168 | { |
3169 | /* Find the best line in this symtab. */ | |
43f3e411 | 3170 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3171 | if (!l) |
c5aa993b | 3172 | continue; |
c906108c SS |
3173 | len = l->nitems; |
3174 | if (len <= 0) | |
3175 | { | |
3176 | /* I think len can be zero if the symtab lacks line numbers | |
3177 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3178 | I'm not sure which, and maybe it depends on the symbol | |
3179 | reader). */ | |
3180 | continue; | |
3181 | } | |
3182 | ||
3183 | prev = NULL; | |
c378eb4e | 3184 | item = l->item; /* Get first line info. */ |
c906108c SS |
3185 | |
3186 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3187 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3188 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3189 | alt = item; |
c906108c | 3190 | |
b926417a | 3191 | auto pc_compare = [](const CORE_ADDR & comp_pc, |
7cbe16e9 SR |
3192 | const struct linetable_entry & lhs)->bool |
3193 | { | |
b926417a | 3194 | return comp_pc < lhs.pc; |
7cbe16e9 | 3195 | }; |
c906108c | 3196 | |
7cbe16e9 SR |
3197 | struct linetable_entry *first = item; |
3198 | struct linetable_entry *last = item + len; | |
3199 | item = std::upper_bound (first, last, pc, pc_compare); | |
3200 | if (item != first) | |
3201 | prev = item - 1; /* Found a matching item. */ | |
c906108c SS |
3202 | |
3203 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3204 | item points at the next line. If we ran off the end of the linetable |
3205 | (pc >= start of the last line), then prev == item. If pc < start of | |
3206 | the first line, prev will not be set. */ | |
c906108c SS |
3207 | |
3208 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3209 | If so, record this file, and its best line, as best so far. Don't |
3210 | save prev if it represents the end of a function (i.e. line number | |
3211 | 0) instead of a real line. */ | |
c906108c | 3212 | |
083ae935 | 3213 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3214 | { |
3215 | best = prev; | |
43f3e411 | 3216 | best_symtab = iter_s; |
25d53da1 KB |
3217 | |
3218 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3219 | if (best_end <= best->pc) | |
3220 | best_end = 0; | |
c906108c | 3221 | } |
25d53da1 KB |
3222 | |
3223 | /* If another line (denoted by ITEM) is in the linetable and its | |
7cbe16e9 | 3224 | PC is after BEST's PC, but before the current BEST_END, then |
25d53da1 | 3225 | use ITEM's PC as the new best_end. */ |
4ee89e90 | 3226 | if (best && item < last && item->pc > best->pc |
7cbe16e9 | 3227 | && (best_end == 0 || best_end > item->pc)) |
25d53da1 | 3228 | best_end = item->pc; |
c906108c SS |
3229 | } |
3230 | ||
3231 | if (!best_symtab) | |
3232 | { | |
e86e87f7 DJ |
3233 | /* If we didn't find any line number info, just return zeros. |
3234 | We used to return alt->line - 1 here, but that could be | |
3235 | anywhere; if we don't have line number info for this PC, | |
3236 | don't make some up. */ | |
3237 | val.pc = pc; | |
c906108c | 3238 | } |
e8717518 FF |
3239 | else if (best->line == 0) |
3240 | { | |
3241 | /* If our best fit is in a range of PC's for which no line | |
3242 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3243 | find any valid line information. */ |
e8717518 FF |
3244 | val.pc = pc; |
3245 | } | |
c906108c SS |
3246 | else |
3247 | { | |
3248 | val.symtab = best_symtab; | |
3249 | val.line = best->line; | |
3250 | val.pc = best->pc; | |
3251 | if (best_end && (!alt || best_end < alt->pc)) | |
3252 | val.end = best_end; | |
3253 | else if (alt) | |
3254 | val.end = alt->pc; | |
3255 | else | |
3256 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3257 | } | |
3258 | val.section = section; | |
3259 | return val; | |
3260 | } | |
3261 | ||
c378eb4e | 3262 | /* Backward compatibility (no section). */ |
c906108c SS |
3263 | |
3264 | struct symtab_and_line | |
fba45db2 | 3265 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3266 | { |
714835d5 | 3267 | struct obj_section *section; |
c906108c SS |
3268 | |
3269 | section = find_pc_overlay (pc); | |
3270 | if (pc_in_unmapped_range (pc, section)) | |
3271 | pc = overlay_mapped_address (pc, section); | |
3272 | return find_pc_sect_line (pc, section, notcurrent); | |
3273 | } | |
34248c3a DE |
3274 | |
3275 | /* See symtab.h. */ | |
3276 | ||
3277 | struct symtab * | |
3278 | find_pc_line_symtab (CORE_ADDR pc) | |
3279 | { | |
3280 | struct symtab_and_line sal; | |
3281 | ||
3282 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3283 | There are currently no callers that ever pass non-zero. */ | |
3284 | sal = find_pc_line (pc, 0); | |
3285 | return sal.symtab; | |
3286 | } | |
c906108c | 3287 | \f |
c906108c SS |
3288 | /* Find line number LINE in any symtab whose name is the same as |
3289 | SYMTAB. | |
3290 | ||
3291 | If found, return the symtab that contains the linetable in which it was | |
3292 | found, set *INDEX to the index in the linetable of the best entry | |
ececd218 | 3293 | found, and set *EXACT_MATCH to true if the value returned is an |
c906108c SS |
3294 | exact match. |
3295 | ||
3296 | If not found, return NULL. */ | |
3297 | ||
50641945 | 3298 | struct symtab * |
5accd1a0 | 3299 | find_line_symtab (struct symtab *sym_tab, int line, |
ececd218 | 3300 | int *index, bool *exact_match) |
c906108c | 3301 | { |
6f43c46f | 3302 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3303 | |
3304 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3305 | so far seen. */ | |
3306 | ||
3307 | int best_index; | |
3308 | struct linetable *best_linetable; | |
3309 | struct symtab *best_symtab; | |
3310 | ||
3311 | /* First try looking it up in the given symtab. */ | |
5accd1a0 TT |
3312 | best_linetable = SYMTAB_LINETABLE (sym_tab); |
3313 | best_symtab = sym_tab; | |
f8eba3c6 | 3314 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3315 | if (best_index < 0 || !exact) |
3316 | { | |
3317 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3318 | another symtab with the same name. In the case of xcoff, |
3319 | multiple csects for one source file (produced by IBM's FORTRAN | |
3320 | compiler) produce multiple symtabs (this is unavoidable | |
3321 | assuming csects can be at arbitrary places in memory and that | |
3322 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3323 | |
3324 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3325 | or 0 if none has been seen so far. |
3326 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3327 | int best; |
3328 | ||
c906108c SS |
3329 | if (best_index >= 0) |
3330 | best = best_linetable->item[best_index].line; | |
3331 | else | |
3332 | best = 0; | |
3333 | ||
2030c079 | 3334 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3335 | { |
3336 | if (objfile->sf) | |
3337 | objfile->sf->qf->expand_symtabs_with_fullname | |
5accd1a0 | 3338 | (objfile, symtab_to_fullname (sym_tab)); |
aed57c53 | 3339 | } |
51432cca | 3340 | |
2030c079 | 3341 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 3342 | { |
b669c953 | 3343 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
3344 | { |
3345 | for (symtab *s : compunit_filetabs (cu)) | |
3346 | { | |
3347 | struct linetable *l; | |
3348 | int ind; | |
3349 | ||
3350 | if (FILENAME_CMP (sym_tab->filename, s->filename) != 0) | |
3351 | continue; | |
3352 | if (FILENAME_CMP (symtab_to_fullname (sym_tab), | |
3353 | symtab_to_fullname (s)) != 0) | |
3354 | continue; | |
3355 | l = SYMTAB_LINETABLE (s); | |
3356 | ind = find_line_common (l, line, &exact, 0); | |
3357 | if (ind >= 0) | |
3358 | { | |
3359 | if (exact) | |
3360 | { | |
3361 | best_index = ind; | |
3362 | best_linetable = l; | |
3363 | best_symtab = s; | |
3364 | goto done; | |
3365 | } | |
3366 | if (best == 0 || l->item[ind].line < best) | |
3367 | { | |
3368 | best = l->item[ind].line; | |
3369 | best_index = ind; | |
3370 | best_linetable = l; | |
3371 | best_symtab = s; | |
3372 | } | |
3373 | } | |
3374 | } | |
3375 | } | |
3376 | } | |
c906108c | 3377 | } |
c5aa993b | 3378 | done: |
c906108c SS |
3379 | if (best_index < 0) |
3380 | return NULL; | |
3381 | ||
3382 | if (index) | |
3383 | *index = best_index; | |
3384 | if (exact_match) | |
ececd218 | 3385 | *exact_match = (exact != 0); |
c906108c SS |
3386 | |
3387 | return best_symtab; | |
3388 | } | |
f8eba3c6 TT |
3389 | |
3390 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3391 | exactly match LINE. Returns an empty vector if there are no exact |
3392 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3393 | |
67d89901 | 3394 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3395 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3396 | struct linetable_entry **best_item) | |
3397 | { | |
c656bca5 | 3398 | int start = 0; |
67d89901 | 3399 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3400 | |
3401 | /* First, collect all the PCs that are at this line. */ | |
3402 | while (1) | |
3403 | { | |
3404 | int was_exact; | |
3405 | int idx; | |
3406 | ||
8435453b DE |
3407 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3408 | start); | |
f8eba3c6 TT |
3409 | if (idx < 0) |
3410 | break; | |
3411 | ||
3412 | if (!was_exact) | |
3413 | { | |
8435453b | 3414 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3415 | |
3416 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3417 | *best_item = item; | |
3418 | ||
3419 | break; | |
3420 | } | |
3421 | ||
67d89901 | 3422 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3423 | start = idx + 1; |
3424 | } | |
3425 | ||
3426 | return result; | |
3427 | } | |
3428 | ||
c906108c SS |
3429 | \f |
3430 | /* Set the PC value for a given source file and line number and return true. | |
ececd218 | 3431 | Returns false for invalid line number (and sets the PC to 0). |
c906108c SS |
3432 | The source file is specified with a struct symtab. */ |
3433 | ||
ececd218 | 3434 | bool |
fba45db2 | 3435 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3436 | { |
3437 | struct linetable *l; | |
3438 | int ind; | |
3439 | ||
3440 | *pc = 0; | |
3441 | if (symtab == 0) | |
ececd218 | 3442 | return false; |
c906108c SS |
3443 | |
3444 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3445 | if (symtab != NULL) | |
3446 | { | |
8435453b | 3447 | l = SYMTAB_LINETABLE (symtab); |
c906108c | 3448 | *pc = l->item[ind].pc; |
ececd218 | 3449 | return true; |
c906108c SS |
3450 | } |
3451 | else | |
ececd218 | 3452 | return false; |
c906108c SS |
3453 | } |
3454 | ||
3455 | /* Find the range of pc values in a line. | |
3456 | Store the starting pc of the line into *STARTPTR | |
3457 | and the ending pc (start of next line) into *ENDPTR. | |
ececd218 CB |
3458 | Returns true to indicate success. |
3459 | Returns false if could not find the specified line. */ | |
c906108c | 3460 | |
ececd218 | 3461 | bool |
fba45db2 KB |
3462 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3463 | CORE_ADDR *endptr) | |
c906108c SS |
3464 | { |
3465 | CORE_ADDR startaddr; | |
3466 | struct symtab_and_line found_sal; | |
3467 | ||
3468 | startaddr = sal.pc; | |
c5aa993b | 3469 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
ececd218 | 3470 | return false; |
c906108c SS |
3471 | |
3472 | /* This whole function is based on address. For example, if line 10 has | |
3473 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3474 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3475 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3476 | This also insures that we never give a range like "starts at 0x134 | |
3477 | and ends at 0x12c". */ | |
3478 | ||
3479 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3480 | if (found_sal.line != sal.line) | |
3481 | { | |
3482 | /* The specified line (sal) has zero bytes. */ | |
3483 | *startptr = found_sal.pc; | |
3484 | *endptr = found_sal.pc; | |
3485 | } | |
3486 | else | |
3487 | { | |
3488 | *startptr = found_sal.pc; | |
3489 | *endptr = found_sal.end; | |
3490 | } | |
ececd218 | 3491 | return true; |
c906108c SS |
3492 | } |
3493 | ||
3494 | /* Given a line table and a line number, return the index into the line | |
3495 | table for the pc of the nearest line whose number is >= the specified one. | |
3496 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3497 | START is the index at which to start searching the line table. |
c906108c SS |
3498 | |
3499 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3500 | ||
3501 | static int | |
aa1ee363 | 3502 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3503 | int *exact_match, int start) |
c906108c | 3504 | { |
52f0bd74 AC |
3505 | int i; |
3506 | int len; | |
c906108c SS |
3507 | |
3508 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3509 | or 0 if none has been seen so far. | |
3510 | BEST_INDEX identifies the item for it. */ | |
3511 | ||
3512 | int best_index = -1; | |
3513 | int best = 0; | |
3514 | ||
b7589f7d DJ |
3515 | *exact_match = 0; |
3516 | ||
c906108c SS |
3517 | if (lineno <= 0) |
3518 | return -1; | |
3519 | if (l == 0) | |
3520 | return -1; | |
3521 | ||
3522 | len = l->nitems; | |
f8eba3c6 | 3523 | for (i = start; i < len; i++) |
c906108c | 3524 | { |
aa1ee363 | 3525 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3526 | |
3527 | if (item->line == lineno) | |
3528 | { | |
3529 | /* Return the first (lowest address) entry which matches. */ | |
3530 | *exact_match = 1; | |
3531 | return i; | |
3532 | } | |
3533 | ||
3534 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3535 | { | |
3536 | best = item->line; | |
3537 | best_index = i; | |
3538 | } | |
3539 | } | |
3540 | ||
3541 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3542 | return best_index; |
3543 | } | |
3544 | ||
ececd218 | 3545 | bool |
fba45db2 | 3546 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3547 | { |
3548 | struct symtab_and_line sal; | |
433759f7 | 3549 | |
c906108c SS |
3550 | sal = find_pc_line (pc, 0); |
3551 | *startptr = sal.pc; | |
3552 | *endptr = sal.end; | |
3553 | return sal.symtab != 0; | |
3554 | } | |
3555 | ||
cd2bb709 PA |
3556 | /* Helper for find_function_start_sal. Does most of the work, except |
3557 | setting the sal's symbol. */ | |
aab2f208 | 3558 | |
cd2bb709 PA |
3559 | static symtab_and_line |
3560 | find_function_start_sal_1 (CORE_ADDR func_addr, obj_section *section, | |
3561 | bool funfirstline) | |
aab2f208 | 3562 | { |
42ddae10 | 3563 | symtab_and_line sal = find_pc_sect_line (func_addr, section, 0); |
aab2f208 | 3564 | |
6e22494e JK |
3565 | if (funfirstline && sal.symtab != NULL |
3566 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3567 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3568 | { | |
42ddae10 | 3569 | struct gdbarch *gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
141c5cc4 | 3570 | |
42ddae10 | 3571 | sal.pc = func_addr; |
141c5cc4 JK |
3572 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3573 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3574 | return sal; |
3575 | } | |
3576 | ||
aab2f208 | 3577 | /* We always should have a line for the function start address. |
42ddae10 | 3578 | If we don't, something is odd. Create a plain SAL referring |
aab2f208 DE |
3579 | just the PC and hope that skip_prologue_sal (if requested) |
3580 | can find a line number for after the prologue. */ | |
42ddae10 | 3581 | if (sal.pc < func_addr) |
aab2f208 | 3582 | { |
51abb421 | 3583 | sal = {}; |
aab2f208 | 3584 | sal.pspace = current_program_space; |
42ddae10 | 3585 | sal.pc = func_addr; |
08be3fe3 | 3586 | sal.section = section; |
aab2f208 DE |
3587 | } |
3588 | ||
3589 | if (funfirstline) | |
3590 | skip_prologue_sal (&sal); | |
3591 | ||
3592 | return sal; | |
3593 | } | |
3594 | ||
42ddae10 PA |
3595 | /* See symtab.h. */ |
3596 | ||
cd2bb709 PA |
3597 | symtab_and_line |
3598 | find_function_start_sal (CORE_ADDR func_addr, obj_section *section, | |
3599 | bool funfirstline) | |
3600 | { | |
3601 | symtab_and_line sal | |
3602 | = find_function_start_sal_1 (func_addr, section, funfirstline); | |
3603 | ||
3604 | /* find_function_start_sal_1 does a linetable search, so it finds | |
3605 | the symtab and linenumber, but not a symbol. Fill in the | |
3606 | function symbol too. */ | |
3607 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); | |
3608 | ||
3609 | return sal; | |
3610 | } | |
3611 | ||
3612 | /* See symtab.h. */ | |
3613 | ||
42ddae10 PA |
3614 | symtab_and_line |
3615 | find_function_start_sal (symbol *sym, bool funfirstline) | |
3616 | { | |
3617 | fixup_symbol_section (sym, NULL); | |
3618 | symtab_and_line sal | |
2b1ffcfd | 3619 | = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)), |
cd2bb709 PA |
3620 | SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym), |
3621 | funfirstline); | |
42ddae10 PA |
3622 | sal.symbol = sym; |
3623 | return sal; | |
3624 | } | |
3625 | ||
3626 | ||
8c7a1ee8 EZ |
3627 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3628 | address for that function that has an entry in SYMTAB's line info | |
3629 | table. If such an entry cannot be found, return FUNC_ADDR | |
3630 | unaltered. */ | |
eca864fe | 3631 | |
70221824 | 3632 | static CORE_ADDR |
8c7a1ee8 EZ |
3633 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3634 | { | |
3635 | CORE_ADDR func_start, func_end; | |
3636 | struct linetable *l; | |
952a6d41 | 3637 | int i; |
8c7a1ee8 EZ |
3638 | |
3639 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3640 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3641 | if (l == NULL) |
3642 | return func_addr; | |
3643 | ||
3644 | /* Get the range for the function's PC values, or give up if we | |
3645 | cannot, for some reason. */ | |
3646 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3647 | return func_addr; | |
3648 | ||
3649 | /* Linetable entries are ordered by PC values, see the commentary in | |
3650 | symtab.h where `struct linetable' is defined. Thus, the first | |
3651 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3652 | address we are looking for. */ | |
3653 | for (i = 0; i < l->nitems; i++) | |
3654 | { | |
3655 | struct linetable_entry *item = &(l->item[i]); | |
3656 | ||
3657 | /* Don't use line numbers of zero, they mark special entries in | |
3658 | the table. See the commentary on symtab.h before the | |
3659 | definition of struct linetable. */ | |
3660 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3661 | return item->pc; | |
3662 | } | |
3663 | ||
3664 | return func_addr; | |
3665 | } | |
3666 | ||
059acae7 UW |
3667 | /* Adjust SAL to the first instruction past the function prologue. |
3668 | If the PC was explicitly specified, the SAL is not changed. | |
5b0e2db4 AB |
3669 | If the line number was explicitly specified then the SAL can still be |
3670 | updated, unless the language for SAL is assembler, in which case the SAL | |
3671 | will be left unchanged. | |
3672 | If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3673 | |
059acae7 UW |
3674 | void |
3675 | skip_prologue_sal (struct symtab_and_line *sal) | |
3676 | { | |
3677 | struct symbol *sym; | |
3678 | struct symtab_and_line start_sal; | |
8be455d7 | 3679 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3680 | struct obj_section *section; |
3681 | const char *name; | |
3682 | struct objfile *objfile; | |
3683 | struct gdbarch *gdbarch; | |
3977b71f | 3684 | const struct block *b, *function_block; |
8be455d7 | 3685 | int force_skip, skip; |
c906108c | 3686 | |
a4b411d6 | 3687 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3688 | if (sal->explicit_pc) |
3689 | return; | |
6c95b8df | 3690 | |
5b0e2db4 AB |
3691 | /* In assembly code, if the user asks for a specific line then we should |
3692 | not adjust the SAL. The user already has instruction level | |
3693 | visibility in this case, so selecting a line other than one requested | |
3694 | is likely to be the wrong choice. */ | |
3695 | if (sal->symtab != nullptr | |
3696 | && sal->explicit_line | |
3697 | && SYMTAB_LANGUAGE (sal->symtab) == language_asm) | |
3698 | return; | |
3699 | ||
5ed8105e PA |
3700 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3701 | ||
059acae7 | 3702 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3703 | |
059acae7 UW |
3704 | sym = find_pc_sect_function (sal->pc, sal->section); |
3705 | if (sym != NULL) | |
bccdca4a | 3706 | { |
059acae7 UW |
3707 | fixup_symbol_section (sym, NULL); |
3708 | ||
08be3fe3 | 3709 | objfile = symbol_objfile (sym); |
2b1ffcfd | 3710 | pc = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3711 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3712 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3713 | } |
059acae7 UW |
3714 | else |
3715 | { | |
7c7b6655 TT |
3716 | struct bound_minimal_symbol msymbol |
3717 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3718 | |
7c7b6655 | 3719 | if (msymbol.minsym == NULL) |
5ed8105e | 3720 | return; |
059acae7 | 3721 | |
7c7b6655 | 3722 | objfile = msymbol.objfile; |
77e371c0 | 3723 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3724 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3725 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3726 | } |
3727 | ||
3728 | gdbarch = get_objfile_arch (objfile); | |
3729 | ||
8be455d7 JK |
3730 | /* Process the prologue in two passes. In the first pass try to skip the |
3731 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3732 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3733 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3734 | |
8be455d7 JK |
3735 | skip = 1; |
3736 | force_skip = 1; | |
059acae7 | 3737 | |
8be455d7 JK |
3738 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3739 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3740 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3741 | if (sym != NULL |
3742 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3743 | force_skip = 0; |
059acae7 | 3744 | |
8be455d7 JK |
3745 | saved_pc = pc; |
3746 | do | |
c906108c | 3747 | { |
8be455d7 | 3748 | pc = saved_pc; |
4309257c | 3749 | |
8be455d7 JK |
3750 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3751 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3752 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3753 | pc = overlay_unmapped_address (pc, section); | |
3754 | ||
3755 | /* Skip "first line" of function (which is actually its prologue). */ | |
3756 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3757 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3758 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3759 | if (skip) |
46a62268 | 3760 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3761 | |
3762 | /* For overlays, map pc back into its mapped VMA range. */ | |
3763 | pc = overlay_mapped_address (pc, section); | |
3764 | ||
3765 | /* Calculate line number. */ | |
059acae7 | 3766 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3767 | |
3768 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3769 | line is still part of the same function. */ | |
3770 | if (skip && start_sal.pc != pc | |
2b1ffcfd | 3771 | && (sym ? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
b1d96efd | 3772 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
7cbd4a93 TT |
3773 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3774 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3775 | { |
3776 | /* First pc of next line */ | |
3777 | pc = start_sal.end; | |
3778 | /* Recalculate the line number (might not be N+1). */ | |
3779 | start_sal = find_pc_sect_line (pc, section, 0); | |
3780 | } | |
3781 | ||
3782 | /* On targets with executable formats that don't have a concept of | |
3783 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3784 | to `__main' in `main' between the prologue and before user | |
3785 | code. */ | |
3786 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3787 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3788 | { |
3789 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3790 | /* Recalculate the line number (might not be N+1). */ | |
3791 | start_sal = find_pc_sect_line (pc, section, 0); | |
3792 | force_skip = 1; | |
3793 | } | |
4309257c | 3794 | } |
8be455d7 | 3795 | while (!force_skip && skip--); |
4309257c | 3796 | |
8c7a1ee8 EZ |
3797 | /* If we still don't have a valid source line, try to find the first |
3798 | PC in the lineinfo table that belongs to the same function. This | |
3799 | happens with COFF debug info, which does not seem to have an | |
3800 | entry in lineinfo table for the code after the prologue which has | |
3801 | no direct relation to source. For example, this was found to be | |
3802 | the case with the DJGPP target using "gcc -gcoff" when the | |
3803 | compiler inserted code after the prologue to make sure the stack | |
3804 | is aligned. */ | |
8be455d7 | 3805 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3806 | { |
08be3fe3 | 3807 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3808 | /* Recalculate the line number. */ |
059acae7 | 3809 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3810 | } |
3811 | ||
059acae7 UW |
3812 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3813 | forward SAL to the end of the prologue. */ | |
3814 | if (sal->pc >= pc) | |
3815 | return; | |
3816 | ||
3817 | sal->pc = pc; | |
3818 | sal->section = section; | |
059acae7 UW |
3819 | sal->symtab = start_sal.symtab; |
3820 | sal->line = start_sal.line; | |
3821 | sal->end = start_sal.end; | |
c906108c | 3822 | |
edb3359d DJ |
3823 | /* Check if we are now inside an inlined function. If we can, |
3824 | use the call site of the function instead. */ | |
059acae7 | 3825 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3826 | function_block = NULL; |
3827 | while (b != NULL) | |
3828 | { | |
3829 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3830 | function_block = b; | |
3831 | else if (BLOCK_FUNCTION (b) != NULL) | |
3832 | break; | |
3833 | b = BLOCK_SUPERBLOCK (b); | |
3834 | } | |
3835 | if (function_block != NULL | |
3836 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3837 | { | |
059acae7 | 3838 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3839 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3840 | } |
c906108c | 3841 | } |
50641945 | 3842 | |
f1f58506 DE |
3843 | /* Given PC at the function's start address, attempt to find the |
3844 | prologue end using SAL information. Return zero if the skip fails. | |
3845 | ||
3846 | A non-optimized prologue traditionally has one SAL for the function | |
3847 | and a second for the function body. A single line function has | |
3848 | them both pointing at the same line. | |
3849 | ||
3850 | An optimized prologue is similar but the prologue may contain | |
3851 | instructions (SALs) from the instruction body. Need to skip those | |
3852 | while not getting into the function body. | |
3853 | ||
3854 | The functions end point and an increasing SAL line are used as | |
3855 | indicators of the prologue's endpoint. | |
3856 | ||
3857 | This code is based on the function refine_prologue_limit | |
3858 | (found in ia64). */ | |
3859 | ||
3860 | CORE_ADDR | |
3861 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3862 | { | |
3863 | struct symtab_and_line prologue_sal; | |
3864 | CORE_ADDR start_pc; | |
3865 | CORE_ADDR end_pc; | |
3866 | const struct block *bl; | |
3867 | ||
3868 | /* Get an initial range for the function. */ | |
3869 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3870 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3871 | ||
3872 | prologue_sal = find_pc_line (start_pc, 0); | |
3873 | if (prologue_sal.line != 0) | |
3874 | { | |
3875 | /* For languages other than assembly, treat two consecutive line | |
3876 | entries at the same address as a zero-instruction prologue. | |
3877 | The GNU assembler emits separate line notes for each instruction | |
3878 | in a multi-instruction macro, but compilers generally will not | |
3879 | do this. */ | |
3880 | if (prologue_sal.symtab->language != language_asm) | |
3881 | { | |
8435453b | 3882 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3883 | int idx = 0; |
3884 | ||
3885 | /* Skip any earlier lines, and any end-of-sequence marker | |
3886 | from a previous function. */ | |
3887 | while (linetable->item[idx].pc != prologue_sal.pc | |
3888 | || linetable->item[idx].line == 0) | |
3889 | idx++; | |
3890 | ||
3891 | if (idx+1 < linetable->nitems | |
3892 | && linetable->item[idx+1].line != 0 | |
3893 | && linetable->item[idx+1].pc == start_pc) | |
3894 | return start_pc; | |
3895 | } | |
3896 | ||
3897 | /* If there is only one sal that covers the entire function, | |
3898 | then it is probably a single line function, like | |
3899 | "foo(){}". */ | |
3900 | if (prologue_sal.end >= end_pc) | |
3901 | return 0; | |
3902 | ||
3903 | while (prologue_sal.end < end_pc) | |
3904 | { | |
3905 | struct symtab_and_line sal; | |
3906 | ||
3907 | sal = find_pc_line (prologue_sal.end, 0); | |
3908 | if (sal.line == 0) | |
3909 | break; | |
3910 | /* Assume that a consecutive SAL for the same (or larger) | |
3911 | line mark the prologue -> body transition. */ | |
3912 | if (sal.line >= prologue_sal.line) | |
3913 | break; | |
3914 | /* Likewise if we are in a different symtab altogether | |
3915 | (e.g. within a file included via #include). */ | |
3916 | if (sal.symtab != prologue_sal.symtab) | |
3917 | break; | |
3918 | ||
3919 | /* The line number is smaller. Check that it's from the | |
3920 | same function, not something inlined. If it's inlined, | |
3921 | then there is no point comparing the line numbers. */ | |
3922 | bl = block_for_pc (prologue_sal.end); | |
3923 | while (bl) | |
3924 | { | |
3925 | if (block_inlined_p (bl)) | |
3926 | break; | |
3927 | if (BLOCK_FUNCTION (bl)) | |
3928 | { | |
3929 | bl = NULL; | |
3930 | break; | |
3931 | } | |
3932 | bl = BLOCK_SUPERBLOCK (bl); | |
3933 | } | |
3934 | if (bl != NULL) | |
3935 | break; | |
3936 | ||
3937 | /* The case in which compiler's optimizer/scheduler has | |
3938 | moved instructions into the prologue. We look ahead in | |
3939 | the function looking for address ranges whose | |
3940 | corresponding line number is less the first one that we | |
3941 | found for the function. This is more conservative then | |
3942 | refine_prologue_limit which scans a large number of SALs | |
3943 | looking for any in the prologue. */ | |
3944 | prologue_sal = sal; | |
3945 | } | |
3946 | } | |
3947 | ||
3948 | if (prologue_sal.end < end_pc) | |
3949 | /* Return the end of this line, or zero if we could not find a | |
3950 | line. */ | |
3951 | return prologue_sal.end; | |
3952 | else | |
3953 | /* Don't return END_PC, which is past the end of the function. */ | |
3954 | return prologue_sal.pc; | |
3955 | } | |
bf223d3e PA |
3956 | |
3957 | /* See symtab.h. */ | |
3958 | ||
3959 | symbol * | |
3960 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3961 | { | |
4024cf2b PA |
3962 | CORE_ADDR func_addr; |
3963 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3964 | return NULL; |
3965 | ||
4024cf2b | 3966 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3967 | if (sym != NULL |
3968 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
2b1ffcfd | 3969 | && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3970 | return sym; |
3971 | ||
3972 | return NULL; | |
3973 | } | |
3974 | ||
f1f58506 | 3975 | \f |
c906108c SS |
3976 | /* If P is of the form "operator[ \t]+..." where `...' is |
3977 | some legitimate operator text, return a pointer to the | |
3978 | beginning of the substring of the operator text. | |
3979 | Otherwise, return "". */ | |
eca864fe | 3980 | |
96142726 TT |
3981 | static const char * |
3982 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3983 | { |
3984 | *end = ""; | |
8090b426 | 3985 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3986 | return *end; |
8090b426 | 3987 | p += CP_OPERATOR_LEN; |
c906108c SS |
3988 | |
3989 | /* Don't get faked out by `operator' being part of a longer | |
3990 | identifier. */ | |
c5aa993b | 3991 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3992 | return *end; |
3993 | ||
3994 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
3995 | while (*p == ' ' || *p == '\t') | |
3996 | p++; | |
3997 | ||
c378eb4e | 3998 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 3999 | |
c5aa993b | 4000 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 4001 | { |
96142726 | 4002 | const char *q = p + 1; |
433759f7 | 4003 | |
c5aa993b | 4004 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
4005 | q++; |
4006 | *end = q; | |
4007 | return p; | |
4008 | } | |
4009 | ||
53e8ad3d MS |
4010 | while (*p) |
4011 | switch (*p) | |
4012 | { | |
4013 | case '\\': /* regexp quoting */ | |
4014 | if (p[1] == '*') | |
4015 | { | |
3e43a32a | 4016 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
4017 | *end = p + 3; |
4018 | else /* 'operator\*' */ | |
4019 | *end = p + 2; | |
4020 | return p; | |
4021 | } | |
4022 | else if (p[1] == '[') | |
4023 | { | |
4024 | if (p[2] == ']') | |
3e43a32a MS |
4025 | error (_("mismatched quoting on brackets, " |
4026 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
4027 | else if (p[2] == '\\' && p[3] == ']') |
4028 | { | |
4029 | *end = p + 4; /* 'operator\[\]' */ | |
4030 | return p; | |
4031 | } | |
4032 | else | |
8a3fe4f8 | 4033 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4034 | } |
9af17804 | 4035 | else |
53e8ad3d | 4036 | { |
85102364 | 4037 | /* Gratuitous quote: skip it and move on. */ |
53e8ad3d MS |
4038 | p++; |
4039 | continue; | |
4040 | } | |
4041 | break; | |
4042 | case '!': | |
4043 | case '=': | |
4044 | case '*': | |
4045 | case '/': | |
4046 | case '%': | |
4047 | case '^': | |
4048 | if (p[1] == '=') | |
4049 | *end = p + 2; | |
4050 | else | |
4051 | *end = p + 1; | |
4052 | return p; | |
4053 | case '<': | |
4054 | case '>': | |
4055 | case '+': | |
4056 | case '-': | |
4057 | case '&': | |
4058 | case '|': | |
4059 | if (p[0] == '-' && p[1] == '>') | |
4060 | { | |
c378eb4e | 4061 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4062 | if (p[2] == '*') |
4063 | { | |
4064 | *end = p + 3; /* 'operator->*' */ | |
4065 | return p; | |
4066 | } | |
4067 | else if (p[2] == '\\') | |
4068 | { | |
4069 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4070 | return p; | |
4071 | } | |
4072 | else | |
4073 | { | |
4074 | *end = p + 2; /* 'operator->' */ | |
4075 | return p; | |
4076 | } | |
4077 | } | |
4078 | if (p[1] == '=' || p[1] == p[0]) | |
4079 | *end = p + 2; | |
4080 | else | |
4081 | *end = p + 1; | |
4082 | return p; | |
4083 | case '~': | |
4084 | case ',': | |
c5aa993b | 4085 | *end = p + 1; |
53e8ad3d MS |
4086 | return p; |
4087 | case '(': | |
4088 | if (p[1] != ')') | |
3e43a32a MS |
4089 | error (_("`operator ()' must be specified " |
4090 | "without whitespace in `()'")); | |
c5aa993b | 4091 | *end = p + 2; |
53e8ad3d MS |
4092 | return p; |
4093 | case '?': | |
4094 | if (p[1] != ':') | |
3e43a32a MS |
4095 | error (_("`operator ?:' must be specified " |
4096 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4097 | *end = p + 2; |
4098 | return p; | |
4099 | case '[': | |
4100 | if (p[1] != ']') | |
3e43a32a MS |
4101 | error (_("`operator []' must be specified " |
4102 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4103 | *end = p + 2; |
4104 | return p; | |
4105 | default: | |
8a3fe4f8 | 4106 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4107 | break; |
4108 | } | |
4109 | ||
c906108c SS |
4110 | *end = ""; |
4111 | return *end; | |
4112 | } | |
c906108c | 4113 | \f |
c5aa993b | 4114 | |
28cd9371 PW |
4115 | /* What part to match in a file name. */ |
4116 | ||
4117 | struct filename_partial_match_opts | |
4118 | { | |
4119 | /* Only match the directory name part. */ | |
491144b5 | 4120 | bool dirname = false; |
28cd9371 PW |
4121 | |
4122 | /* Only match the basename part. */ | |
491144b5 | 4123 | bool basename = false; |
28cd9371 PW |
4124 | }; |
4125 | ||
9fdc877b DE |
4126 | /* Data structure to maintain printing state for output_source_filename. */ |
4127 | ||
4128 | struct output_source_filename_data | |
4129 | { | |
28cd9371 PW |
4130 | /* Output only filenames matching REGEXP. */ |
4131 | std::string regexp; | |
4132 | gdb::optional<compiled_regex> c_regexp; | |
4133 | /* Possibly only match a part of the filename. */ | |
4134 | filename_partial_match_opts partial_match; | |
4135 | ||
4136 | ||
9fdc877b DE |
4137 | /* Cache of what we've seen so far. */ |
4138 | struct filename_seen_cache *filename_seen_cache; | |
4139 | ||
4140 | /* Flag of whether we're printing the first one. */ | |
4141 | int first; | |
4142 | }; | |
4143 | ||
c94fdfd0 | 4144 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4145 | NAME is the name to print. |
4146 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4147 | |
c94fdfd0 | 4148 | static void |
9fdc877b DE |
4149 | output_source_filename (const char *name, |
4150 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4151 | { |
4152 | /* Since a single source file can result in several partial symbol | |
4153 | tables, we need to avoid printing it more than once. Note: if | |
4154 | some of the psymtabs are read in and some are not, it gets | |
4155 | printed both under "Source files for which symbols have been | |
4156 | read" and "Source files for which symbols will be read in on | |
4157 | demand". I consider this a reasonable way to deal with the | |
4158 | situation. I'm not sure whether this can also happen for | |
4159 | symtabs; it doesn't hurt to check. */ | |
4160 | ||
4161 | /* Was NAME already seen? */ | |
bbf2f4df | 4162 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4163 | { |
4164 | /* Yes; don't print it again. */ | |
4165 | return; | |
4166 | } | |
9fdc877b | 4167 | |
28cd9371 PW |
4168 | /* Does it match data->regexp? */ |
4169 | if (data->c_regexp.has_value ()) | |
4170 | { | |
4171 | const char *to_match; | |
4172 | std::string dirname; | |
4173 | ||
4174 | if (data->partial_match.dirname) | |
4175 | { | |
4176 | dirname = ldirname (name); | |
4177 | to_match = dirname.c_str (); | |
4178 | } | |
4179 | else if (data->partial_match.basename) | |
4180 | to_match = lbasename (name); | |
4181 | else | |
4182 | to_match = name; | |
4183 | ||
4184 | if (data->c_regexp->exec (to_match, 0, NULL, 0) != 0) | |
4185 | return; | |
4186 | } | |
4187 | ||
4188 | /* Print it and reset *FIRST. */ | |
9fdc877b DE |
4189 | if (! data->first) |
4190 | printf_filtered (", "); | |
4191 | data->first = 0; | |
c906108c SS |
4192 | |
4193 | wrap_here (""); | |
1ed9f74e | 4194 | fputs_styled (name, file_name_style.style (), gdb_stdout); |
c5aa993b | 4195 | } |
c906108c | 4196 | |
ccefe4c4 | 4197 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4198 | |
ccefe4c4 | 4199 | static void |
533a737e | 4200 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4201 | void *data) |
4202 | { | |
19ba03f4 SM |
4203 | output_source_filename (fullname ? fullname : filename, |
4204 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4205 | } |
4206 | ||
28cd9371 PW |
4207 | using isrc_flag_option_def |
4208 | = gdb::option::flag_option_def<filename_partial_match_opts>; | |
4209 | ||
4210 | static const gdb::option::option_def info_sources_option_defs[] = { | |
4211 | ||
4212 | isrc_flag_option_def { | |
4213 | "dirname", | |
4214 | [] (filename_partial_match_opts *opts) { return &opts->dirname; }, | |
4215 | N_("Show only the files having a dirname matching REGEXP."), | |
4216 | }, | |
4217 | ||
4218 | isrc_flag_option_def { | |
4219 | "basename", | |
4220 | [] (filename_partial_match_opts *opts) { return &opts->basename; }, | |
4221 | N_("Show only the files having a basename matching REGEXP."), | |
4222 | }, | |
4223 | ||
4224 | }; | |
4225 | ||
4226 | /* Create an option_def_group for the "info sources" options, with | |
4227 | ISRC_OPTS as context. */ | |
4228 | ||
4229 | static inline gdb::option::option_def_group | |
4230 | make_info_sources_options_def_group (filename_partial_match_opts *isrc_opts) | |
4231 | { | |
4232 | return {{info_sources_option_defs}, isrc_opts}; | |
4233 | } | |
4234 | ||
4235 | /* Prints the header message for the source files that will be printed | |
4236 | with the matching info present in DATA. SYMBOL_MSG is a message | |
4237 | that tells what will or has been done with the symbols of the | |
4238 | matching source files. */ | |
4239 | ||
c906108c | 4240 | static void |
28cd9371 PW |
4241 | print_info_sources_header (const char *symbol_msg, |
4242 | const struct output_source_filename_data *data) | |
4243 | { | |
4244 | puts_filtered (symbol_msg); | |
4245 | if (!data->regexp.empty ()) | |
4246 | { | |
4247 | if (data->partial_match.dirname) | |
4248 | printf_filtered (_("(dirname matching regular expression \"%s\")"), | |
4249 | data->regexp.c_str ()); | |
4250 | else if (data->partial_match.basename) | |
4251 | printf_filtered (_("(basename matching regular expression \"%s\")"), | |
4252 | data->regexp.c_str ()); | |
4253 | else | |
4254 | printf_filtered (_("(filename matching regular expression \"%s\")"), | |
4255 | data->regexp.c_str ()); | |
4256 | } | |
4257 | puts_filtered ("\n"); | |
4258 | } | |
4259 | ||
4260 | /* Completer for "info sources". */ | |
4261 | ||
4262 | static void | |
4263 | info_sources_command_completer (cmd_list_element *ignore, | |
4264 | completion_tracker &tracker, | |
4265 | const char *text, const char *word) | |
4266 | { | |
4267 | const auto group = make_info_sources_options_def_group (nullptr); | |
4268 | if (gdb::option::complete_options | |
4269 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4270 | return; | |
4271 | } | |
4272 | ||
4273 | static void | |
4274 | info_sources_command (const char *args, int from_tty) | |
c906108c | 4275 | { |
9fdc877b | 4276 | struct output_source_filename_data data; |
c5aa993b | 4277 | |
c906108c SS |
4278 | if (!have_full_symbols () && !have_partial_symbols ()) |
4279 | { | |
8a3fe4f8 | 4280 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4281 | } |
c5aa993b | 4282 | |
bbf2f4df PA |
4283 | filename_seen_cache filenames_seen; |
4284 | ||
28cd9371 PW |
4285 | auto group = make_info_sources_options_def_group (&data.partial_match); |
4286 | ||
4287 | gdb::option::process_options | |
4288 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
9fdc877b | 4289 | |
28cd9371 PW |
4290 | if (args != NULL && *args != '\000') |
4291 | data.regexp = args; | |
c906108c | 4292 | |
28cd9371 | 4293 | data.filename_seen_cache = &filenames_seen; |
9fdc877b | 4294 | data.first = 1; |
28cd9371 PW |
4295 | |
4296 | if (data.partial_match.dirname && data.partial_match.basename) | |
4297 | error (_("You cannot give both -basename and -dirname to 'info sources'.")); | |
4298 | if ((data.partial_match.dirname || data.partial_match.basename) | |
4299 | && data.regexp.empty ()) | |
4300 | error (_("Missing REGEXP for 'info sources'.")); | |
4301 | ||
4302 | if (data.regexp.empty ()) | |
4303 | data.c_regexp.reset (); | |
4304 | else | |
4305 | { | |
4306 | int cflags = REG_NOSUB; | |
4307 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
4308 | cflags |= REG_ICASE; | |
4309 | #endif | |
4310 | data.c_regexp.emplace (data.regexp.c_str (), cflags, | |
4311 | _("Invalid regexp")); | |
4312 | } | |
4313 | ||
4314 | print_info_sources_header | |
4315 | (_("Source files for which symbols have been read in:\n"), &data); | |
4316 | ||
2030c079 | 4317 | for (objfile *objfile : current_program_space->objfiles ()) |
8b31193a | 4318 | { |
b669c953 | 4319 | for (compunit_symtab *cu : objfile->compunits ()) |
8b31193a TT |
4320 | { |
4321 | for (symtab *s : compunit_filetabs (cu)) | |
4322 | { | |
4323 | const char *fullname = symtab_to_fullname (s); | |
433759f7 | 4324 | |
8b31193a TT |
4325 | output_source_filename (fullname, &data); |
4326 | } | |
4327 | } | |
4328 | } | |
c906108c | 4329 | printf_filtered ("\n\n"); |
c5aa993b | 4330 | |
28cd9371 PW |
4331 | print_info_sources_header |
4332 | (_("Source files for which symbols will be read in on demand:\n"), &data); | |
c906108c | 4333 | |
bbf2f4df | 4334 | filenames_seen.clear (); |
9fdc877b | 4335 | data.first = 1; |
bb4142cf DE |
4336 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4337 | 1 /*need_fullname*/); | |
c906108c SS |
4338 | printf_filtered ("\n"); |
4339 | } | |
4340 | ||
fbd9ab74 JK |
4341 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4342 | non-zero compare only lbasename of FILES. */ | |
4343 | ||
c906108c | 4344 | static int |
96142726 | 4345 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4346 | { |
4347 | int i; | |
4348 | ||
4349 | if (file != NULL && nfiles != 0) | |
4350 | { | |
4351 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4352 | { |
fbd9ab74 JK |
4353 | if (compare_filenames_for_search (file, (basenames |
4354 | ? lbasename (files[i]) | |
4355 | : files[i]))) | |
c5aa993b JM |
4356 | return 1; |
4357 | } | |
c906108c SS |
4358 | } |
4359 | else if (nfiles == 0) | |
4360 | return 1; | |
4361 | return 0; | |
4362 | } | |
4363 | ||
b52109bc | 4364 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4365 | sort symbols, not minimal symbols. */ |
eca864fe | 4366 | |
b9c04fb2 TT |
4367 | int |
4368 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4369 | const symbol_search &sym_b) | |
434d2d4f | 4370 | { |
b52109bc DE |
4371 | int c; |
4372 | ||
b9c04fb2 TT |
4373 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4374 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4375 | if (c != 0) |
4376 | return c; | |
434d2d4f | 4377 | |
b9c04fb2 TT |
4378 | if (sym_a.block != sym_b.block) |
4379 | return sym_a.block - sym_b.block; | |
b52109bc | 4380 | |
b9c04fb2 TT |
4381 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4382 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4383 | } |
4384 | ||
12615cba PW |
4385 | /* Returns true if the type_name of symbol_type of SYM matches TREG. |
4386 | If SYM has no symbol_type or symbol_name, returns false. */ | |
4387 | ||
4388 | bool | |
4389 | treg_matches_sym_type_name (const compiled_regex &treg, | |
4390 | const struct symbol *sym) | |
4391 | { | |
4392 | struct type *sym_type; | |
4393 | std::string printed_sym_type_name; | |
4394 | ||
4395 | if (symbol_lookup_debug > 1) | |
4396 | { | |
4397 | fprintf_unfiltered (gdb_stdlog, | |
4398 | "treg_matches_sym_type_name\n sym %s\n", | |
4399 | SYMBOL_NATURAL_NAME (sym)); | |
4400 | } | |
4401 | ||
4402 | sym_type = SYMBOL_TYPE (sym); | |
4403 | if (sym_type == NULL) | |
4404 | return false; | |
4405 | ||
43d397ca PW |
4406 | { |
4407 | scoped_switch_to_sym_language_if_auto l (sym); | |
12615cba | 4408 | |
12615cba | 4409 | printed_sym_type_name = type_to_string (sym_type); |
43d397ca PW |
4410 | } |
4411 | ||
12615cba PW |
4412 | |
4413 | if (symbol_lookup_debug > 1) | |
4414 | { | |
4415 | fprintf_unfiltered (gdb_stdlog, | |
4416 | " sym_type_name %s\n", | |
4417 | printed_sym_type_name.c_str ()); | |
4418 | } | |
4419 | ||
4420 | ||
4421 | if (printed_sym_type_name.empty ()) | |
4422 | return false; | |
4423 | ||
4424 | return treg.exec (printed_sym_type_name.c_str (), 0, NULL, 0) == 0; | |
4425 | } | |
4426 | ||
4427 | ||
b9c04fb2 | 4428 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4429 | |
4430 | static void | |
b9c04fb2 | 4431 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4432 | { |
b9c04fb2 TT |
4433 | std::sort (result->begin (), result->end ()); |
4434 | result->erase (std::unique (result->begin (), result->end ()), | |
4435 | result->end ()); | |
434d2d4f | 4436 | } |
5bd98722 | 4437 | |
c906108c | 4438 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4439 | returning the results. |
c906108c SS |
4440 | |
4441 | Only symbols of KIND are searched: | |
e8930875 | 4442 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
12615cba PW |
4443 | and constants (enums). |
4444 | if T_REGEXP is not NULL, only returns var that have | |
4445 | a type matching regular expression T_REGEXP. | |
176620f1 EZ |
4446 | FUNCTIONS_DOMAIN - search all functions |
4447 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4448 | ALL_DOMAIN - an internal error for this function |
c906108c | 4449 | |
b52109bc DE |
4450 | Within each file the results are sorted locally; each symtab's global and |
4451 | static blocks are separately alphabetized. | |
4acfdd20 AB |
4452 | Duplicate entries are removed. |
4453 | ||
4454 | When EXCLUDE_MINSYMS is false then matching minsyms are also returned, | |
4455 | otherwise they are excluded. */ | |
c378eb4e | 4456 | |
b9c04fb2 | 4457 | std::vector<symbol_search> |
96142726 | 4458 | search_symbols (const char *regexp, enum search_domain kind, |
12615cba | 4459 | const char *t_regexp, |
4acfdd20 AB |
4460 | int nfiles, const char *files[], |
4461 | bool exclude_minsyms) | |
c906108c | 4462 | { |
346d1dfe | 4463 | const struct blockvector *bv; |
582942f4 | 4464 | const struct block *b; |
52f0bd74 | 4465 | int i = 0; |
8157b174 | 4466 | struct block_iterator iter; |
52f0bd74 | 4467 | struct symbol *sym; |
c906108c | 4468 | int found_misc = 0; |
bc043ef3 | 4469 | static const enum minimal_symbol_type types[] |
eb86c5e2 | 4470 | = {mst_data, mst_text, mst_unknown}; |
bc043ef3 | 4471 | static const enum minimal_symbol_type types2[] |
eb86c5e2 | 4472 | = {mst_bss, mst_file_text, mst_unknown}; |
bc043ef3 | 4473 | static const enum minimal_symbol_type types3[] |
eb86c5e2 | 4474 | = {mst_file_data, mst_solib_trampoline, mst_unknown}; |
bc043ef3 | 4475 | static const enum minimal_symbol_type types4[] |
eb86c5e2 | 4476 | = {mst_file_bss, mst_text_gnu_ifunc, mst_unknown}; |
c906108c SS |
4477 | enum minimal_symbol_type ourtype; |
4478 | enum minimal_symbol_type ourtype2; | |
4479 | enum minimal_symbol_type ourtype3; | |
4480 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4481 | std::vector<symbol_search> result; |
2d7cc5c7 | 4482 | gdb::optional<compiled_regex> preg; |
12615cba | 4483 | gdb::optional<compiled_regex> treg; |
c906108c | 4484 | |
e8930875 JK |
4485 | gdb_assert (kind <= TYPES_DOMAIN); |
4486 | ||
8903c50d TT |
4487 | ourtype = types[kind]; |
4488 | ourtype2 = types2[kind]; | |
4489 | ourtype3 = types3[kind]; | |
4490 | ourtype4 = types4[kind]; | |
c906108c | 4491 | |
c906108c SS |
4492 | if (regexp != NULL) |
4493 | { | |
4494 | /* Make sure spacing is right for C++ operators. | |
4495 | This is just a courtesy to make the matching less sensitive | |
4496 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4497 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4498 | const char *opend; |
4499 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4500 | |
c906108c | 4501 | if (*opname) |
c5aa993b | 4502 | { |
3e43a32a MS |
4503 | int fix = -1; /* -1 means ok; otherwise number of |
4504 | spaces needed. */ | |
433759f7 | 4505 | |
c5aa993b JM |
4506 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4507 | { | |
c378eb4e | 4508 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4509 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4510 | fix = 1; | |
4511 | } | |
4512 | else | |
4513 | { | |
c378eb4e | 4514 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4515 | if (opname[-1] == ' ') |
4516 | fix = 0; | |
4517 | } | |
c378eb4e | 4518 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4519 | if (fix >= 0) |
4520 | { | |
045f55a6 | 4521 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4522 | |
c5aa993b JM |
4523 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4524 | regexp = tmp; | |
4525 | } | |
4526 | } | |
4527 | ||
2d7cc5c7 PA |
4528 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4529 | ? REG_ICASE : 0); | |
4530 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4531 | } |
4532 | ||
12615cba PW |
4533 | if (t_regexp != NULL) |
4534 | { | |
4535 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4536 | ? REG_ICASE : 0); | |
4537 | treg.emplace (t_regexp, cflags, _("Invalid regexp")); | |
4538 | } | |
4539 | ||
c906108c SS |
4540 | /* Search through the partial symtabs *first* for all symbols |
4541 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4542 | the machinery below. */ |
14bc53a8 PA |
4543 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4544 | { | |
4545 | return file_matches (filename, files, nfiles, | |
4546 | basenames); | |
4547 | }, | |
b5ec771e | 4548 | lookup_name_info::match_any (), |
14bc53a8 PA |
4549 | [&] (const char *symname) |
4550 | { | |
12615cba PW |
4551 | return (!preg.has_value () |
4552 | || preg->exec (symname, | |
4553 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4554 | }, |
4555 | NULL, | |
4556 | kind); | |
c906108c SS |
4557 | |
4558 | /* Here, we search through the minimal symbol tables for functions | |
4559 | and variables that match, and force their symbols to be read. | |
4560 | This is in particular necessary for demangled variable names, | |
4561 | which are no longer put into the partial symbol tables. | |
4562 | The symbol will then be found during the scan of symtabs below. | |
4563 | ||
4564 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4565 | for the function, for variables we have to call |
4566 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4567 | has debug info. | |
c906108c | 4568 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4569 | any matching symbols without debug info. |
4570 | We only search the objfile the msymbol came from, we no longer search | |
4571 | all objfiles. In large programs (1000s of shared libs) searching all | |
4572 | objfiles is not worth the pain. */ | |
c906108c | 4573 | |
176620f1 | 4574 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c | 4575 | { |
2030c079 | 4576 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4577 | { |
7932255d | 4578 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4579 | { |
4580 | QUIT; | |
89295b4d | 4581 | |
5325b9bf TT |
4582 | if (msymbol->created_by_gdb) |
4583 | continue; | |
422d65e7 | 4584 | |
5325b9bf TT |
4585 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4586 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4587 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4588 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4589 | { | |
4590 | if (!preg.has_value () | |
4591 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4592 | NULL, 0) == 0) | |
4593 | { | |
4594 | /* Note: An important side-effect of these | |
4595 | lookup functions is to expand the symbol | |
4596 | table if msymbol is found, for the benefit of | |
d8aeb77f | 4597 | the next loop on compunits. */ |
5325b9bf TT |
4598 | if (kind == FUNCTIONS_DOMAIN |
4599 | ? (find_pc_compunit_symtab | |
4600 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4601 | == NULL) | |
4602 | : (lookup_symbol_in_objfile_from_linkage_name | |
4603 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4604 | VAR_DOMAIN) | |
4605 | .symbol == NULL)) | |
4606 | found_misc = 1; | |
4607 | } | |
4608 | } | |
4609 | } | |
4610 | } | |
c906108c SS |
4611 | } |
4612 | ||
2030c079 | 4613 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 4614 | { |
b669c953 | 4615 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
4616 | { |
4617 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
4618 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
4619 | { | |
4620 | b = BLOCKVECTOR_BLOCK (bv, i); | |
4621 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4622 | { | |
4623 | struct symtab *real_symtab = symbol_symtab (sym); | |
4624 | ||
4625 | QUIT; | |
4626 | ||
4627 | /* Check first sole REAL_SYMTAB->FILENAME. It does | |
4628 | not need to be a substring of symtab_to_fullname as | |
4629 | it may contain "./" etc. */ | |
4630 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4631 | || ((basenames_may_differ | |
4632 | || file_matches (lbasename (real_symtab->filename), | |
4633 | files, nfiles, 1)) | |
4634 | && file_matches (symtab_to_fullname (real_symtab), | |
4635 | files, nfiles, 0))) | |
4636 | && ((!preg.has_value () | |
4637 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4638 | NULL, 0) == 0) | |
4639 | && ((kind == VARIABLES_DOMAIN | |
4640 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4641 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4642 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4643 | /* LOC_CONST can be used for more than | |
4644 | just enums, e.g., c++ static const | |
4645 | members. We only want to skip enums | |
4646 | here. */ | |
4647 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
4648 | && (TYPE_CODE (SYMBOL_TYPE (sym)) | |
4649 | == TYPE_CODE_ENUM)) | |
4650 | && (!treg.has_value () | |
4651 | || treg_matches_sym_type_name (*treg, sym))) | |
4652 | || (kind == FUNCTIONS_DOMAIN | |
4653 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4654 | && (!treg.has_value () | |
4655 | || treg_matches_sym_type_name (*treg, | |
4656 | sym))) | |
4657 | || (kind == TYPES_DOMAIN | |
d8f27c60 AB |
4658 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF |
4659 | && SYMBOL_DOMAIN (sym) != MODULE_DOMAIN)))) | |
d8aeb77f TT |
4660 | { |
4661 | /* match */ | |
4662 | result.emplace_back (i, sym); | |
4663 | } | |
4664 | } | |
4665 | } | |
4666 | } | |
4667 | } | |
c906108c | 4668 | |
b9c04fb2 TT |
4669 | if (!result.empty ()) |
4670 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4671 | |
c906108c | 4672 | /* If there are no eyes, avoid all contact. I mean, if there are |
a8462bbf PW |
4673 | no debug symbols, then add matching minsyms. But if the user wants |
4674 | to see symbols matching a type regexp, then never give a minimal symbol, | |
4675 | as we assume that a minimal symbol does not have a type. */ | |
c906108c | 4676 | |
a8462bbf | 4677 | if ((found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
4acfdd20 | 4678 | && !exclude_minsyms |
a8462bbf | 4679 | && !treg.has_value ()) |
c906108c | 4680 | { |
2030c079 | 4681 | for (objfile *objfile : current_program_space->objfiles ()) |
5325b9bf | 4682 | { |
7932255d | 4683 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
4684 | { |
4685 | QUIT; | |
89295b4d | 4686 | |
5325b9bf TT |
4687 | if (msymbol->created_by_gdb) |
4688 | continue; | |
422d65e7 | 4689 | |
5325b9bf TT |
4690 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4691 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4692 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4693 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
4694 | { | |
4695 | if (!preg.has_value () | |
4696 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4697 | NULL, 0) == 0) | |
4698 | { | |
4699 | /* For functions we can do a quick check of whether the | |
4700 | symbol might be found via find_pc_symtab. */ | |
4701 | if (kind != FUNCTIONS_DOMAIN | |
4702 | || (find_pc_compunit_symtab | |
4703 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) | |
4704 | == NULL)) | |
4705 | { | |
4706 | if (lookup_symbol_in_objfile_from_linkage_name | |
4707 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), | |
4708 | VAR_DOMAIN) | |
4709 | .symbol == NULL) | |
4710 | { | |
4711 | /* match */ | |
4712 | result.emplace_back (i, msymbol, objfile); | |
4713 | } | |
4714 | } | |
4715 | } | |
4716 | } | |
4717 | } | |
4718 | } | |
c906108c SS |
4719 | } |
4720 | ||
b9c04fb2 | 4721 | return result; |
c906108c SS |
4722 | } |
4723 | ||
4724 | /* Helper function for symtab_symbol_info, this function uses | |
4725 | the data returned from search_symbols() to print information | |
c7dcbf88 AA |
4726 | regarding the match to gdb_stdout. If LAST is not NULL, |
4727 | print file and line number information for the symbol as | |
4728 | well. Skip printing the filename if it matches LAST. */ | |
c378eb4e | 4729 | |
c906108c | 4730 | static void |
8903c50d | 4731 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4732 | struct symbol *sym, |
05cba821 | 4733 | int block, const char *last) |
c906108c | 4734 | { |
43d397ca | 4735 | scoped_switch_to_sym_language_if_auto l (sym); |
08be3fe3 | 4736 | struct symtab *s = symbol_symtab (sym); |
05cba821 | 4737 | |
c7dcbf88 | 4738 | if (last != NULL) |
c906108c | 4739 | { |
c7dcbf88 | 4740 | const char *s_filename = symtab_to_filename_for_display (s); |
c906108c | 4741 | |
c7dcbf88 AA |
4742 | if (filename_cmp (last, s_filename) != 0) |
4743 | { | |
6a831f06 PA |
4744 | printf_filtered (_("\nFile %ps:\n"), |
4745 | styled_string (file_name_style.style (), | |
4746 | s_filename)); | |
c7dcbf88 AA |
4747 | } |
4748 | ||
4749 | if (SYMBOL_LINE (sym) != 0) | |
4750 | printf_filtered ("%d:\t", SYMBOL_LINE (sym)); | |
4751 | else | |
4752 | puts_filtered ("\t"); | |
4753 | } | |
b744723f | 4754 | |
176620f1 | 4755 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4756 | printf_filtered ("static "); |
c5aa993b | 4757 | |
c378eb4e | 4758 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4759 | if (kind == TYPES_DOMAIN |
4760 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
eb86c5e2 AB |
4761 | { |
4762 | /* FIXME: For C (and C++) we end up with a difference in output here | |
4763 | between how a typedef is printed, and non-typedefs are printed. | |
4764 | The TYPEDEF_PRINT code places a ";" at the end in an attempt to | |
4765 | appear C-like, while TYPE_PRINT doesn't. | |
4766 | ||
4767 | For the struct printing case below, things are worse, we force | |
4768 | printing of the ";" in this function, which is going to be wrong | |
4769 | for languages that don't require a ";" between statements. */ | |
4770 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_TYPEDEF) | |
4771 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); | |
4772 | else | |
4773 | { | |
4774 | type_print (SYMBOL_TYPE (sym), "", gdb_stdout, -1); | |
4775 | printf_filtered ("\n"); | |
4776 | } | |
4777 | } | |
c378eb4e | 4778 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4779 | else if (kind < TYPES_DOMAIN |
4780 | || (kind == TYPES_DOMAIN | |
4781 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4782 | { |
4783 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4784 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4785 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4786 | gdb_stdout, 0); |
c906108c SS |
4787 | |
4788 | printf_filtered (";\n"); | |
4789 | } | |
c906108c SS |
4790 | } |
4791 | ||
4792 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4793 | for non-debugging symbols to gdb_stdout. */ |
4794 | ||
c906108c | 4795 | static void |
7c7b6655 | 4796 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4797 | { |
7c7b6655 | 4798 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4799 | char *tmp; |
4800 | ||
d80b854b | 4801 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4802 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4803 | & (CORE_ADDR) 0xffffffff, |
4804 | 8); | |
3ac4495a | 4805 | else |
77e371c0 | 4806 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4807 | 16); |
6a831f06 PA |
4808 | |
4809 | ui_file_style sym_style = (msymbol.minsym->text_p () | |
4810 | ? function_name_style.style () | |
4811 | : ui_file_style ()); | |
4812 | ||
4813 | printf_filtered (_("%ps %ps\n"), | |
4814 | styled_string (address_style.style (), tmp), | |
4815 | styled_string (sym_style, | |
4816 | MSYMBOL_PRINT_NAME (msymbol.minsym))); | |
c906108c SS |
4817 | } |
4818 | ||
4819 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4820 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4821 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4822 | matches. */ |
4823 | ||
c906108c | 4824 | static void |
4acfdd20 | 4825 | symtab_symbol_info (bool quiet, bool exclude_minsyms, |
12615cba PW |
4826 | const char *regexp, enum search_domain kind, |
4827 | const char *t_regexp, int from_tty) | |
c906108c | 4828 | { |
bc043ef3 | 4829 | static const char * const classnames[] = |
e8930875 | 4830 | {"variable", "function", "type"}; |
c7dcbf88 | 4831 | const char *last_filename = ""; |
c906108c SS |
4832 | int first = 1; |
4833 | ||
e8930875 JK |
4834 | gdb_assert (kind <= TYPES_DOMAIN); |
4835 | ||
b16507e0 AB |
4836 | if (regexp != nullptr && *regexp == '\0') |
4837 | regexp = nullptr; | |
4838 | ||
c378eb4e | 4839 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
12615cba | 4840 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, |
4acfdd20 AB |
4841 | t_regexp, 0, NULL, |
4842 | exclude_minsyms); | |
c906108c | 4843 | |
12615cba PW |
4844 | if (!quiet) |
4845 | { | |
4846 | if (regexp != NULL) | |
4847 | { | |
4848 | if (t_regexp != NULL) | |
4849 | printf_filtered | |
4850 | (_("All %ss matching regular expression \"%s\"" | |
0c95f9ed | 4851 | " with type matching regular expression \"%s\":\n"), |
12615cba PW |
4852 | classnames[kind], regexp, t_regexp); |
4853 | else | |
4854 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4855 | classnames[kind], regexp); | |
4856 | } | |
4857 | else | |
4858 | { | |
4859 | if (t_regexp != NULL) | |
4860 | printf_filtered | |
4861 | (_("All defined %ss" | |
0c95f9ed | 4862 | " with type matching regular expression \"%s\" :\n"), |
12615cba PW |
4863 | classnames[kind], t_regexp); |
4864 | else | |
4865 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
4866 | } | |
4867 | } | |
c906108c | 4868 | |
b9c04fb2 | 4869 | for (const symbol_search &p : symbols) |
c906108c SS |
4870 | { |
4871 | QUIT; | |
4872 | ||
b9c04fb2 | 4873 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4874 | { |
4875 | if (first) | |
4876 | { | |
12615cba PW |
4877 | if (!quiet) |
4878 | printf_filtered (_("\nNon-debugging symbols:\n")); | |
c5aa993b JM |
4879 | first = 0; |
4880 | } | |
b9c04fb2 | 4881 | print_msymbol_info (p.msymbol); |
c5aa993b | 4882 | } |
c906108c | 4883 | else |
c5aa993b JM |
4884 | { |
4885 | print_symbol_info (kind, | |
b9c04fb2 TT |
4886 | p.symbol, |
4887 | p.block, | |
c5aa993b | 4888 | last_filename); |
d01060f0 | 4889 | last_filename |
b9c04fb2 | 4890 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4891 | } |
c906108c | 4892 | } |
c906108c SS |
4893 | } |
4894 | ||
4acfdd20 AB |
4895 | /* Structure to hold the values of the options used by the 'info variables' |
4896 | and 'info functions' commands. These correspond to the -q, -t, and -n | |
4897 | options. */ | |
4898 | ||
4899 | struct info_print_options | |
4900 | { | |
491144b5 CB |
4901 | bool quiet = false; |
4902 | bool exclude_minsyms = false; | |
4acfdd20 AB |
4903 | char *type_regexp = nullptr; |
4904 | ||
4905 | ~info_print_options () | |
4906 | { | |
4907 | xfree (type_regexp); | |
4908 | } | |
4909 | }; | |
4910 | ||
4911 | /* The options used by the 'info variables' and 'info functions' | |
4912 | commands. */ | |
4913 | ||
4914 | static const gdb::option::option_def info_print_options_defs[] = { | |
4915 | gdb::option::boolean_option_def<info_print_options> { | |
4916 | "q", | |
4917 | [] (info_print_options *opt) { return &opt->quiet; }, | |
4918 | nullptr, /* show_cmd_cb */ | |
4919 | nullptr /* set_doc */ | |
4920 | }, | |
4921 | ||
4922 | gdb::option::boolean_option_def<info_print_options> { | |
4923 | "n", | |
4924 | [] (info_print_options *opt) { return &opt->exclude_minsyms; }, | |
4925 | nullptr, /* show_cmd_cb */ | |
4926 | nullptr /* set_doc */ | |
4927 | }, | |
4928 | ||
4929 | gdb::option::string_option_def<info_print_options> { | |
4930 | "t", | |
4931 | [] (info_print_options *opt) { return &opt->type_regexp; }, | |
4932 | nullptr, /* show_cmd_cb */ | |
4933 | nullptr /* set_doc */ | |
4934 | } | |
4935 | }; | |
4936 | ||
4937 | /* Returns the option group used by 'info variables' and 'info | |
4938 | functions'. */ | |
4939 | ||
4940 | static gdb::option::option_def_group | |
4941 | make_info_print_options_def_group (info_print_options *opts) | |
4942 | { | |
4943 | return {{info_print_options_defs}, opts}; | |
4944 | } | |
4945 | ||
4946 | /* Command completer for 'info variables' and 'info functions'. */ | |
4947 | ||
4948 | static void | |
4949 | info_print_command_completer (struct cmd_list_element *ignore, | |
4950 | completion_tracker &tracker, | |
4951 | const char *text, const char * /* word */) | |
4952 | { | |
4953 | const auto group | |
4954 | = make_info_print_options_def_group (nullptr); | |
4955 | if (gdb::option::complete_options | |
4956 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
4957 | return; | |
4958 | ||
4959 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
4960 | symbol_completer (ignore, tracker, text, word); | |
4961 | } | |
4962 | ||
b16507e0 AB |
4963 | /* Implement the 'info variables' command. */ |
4964 | ||
0b39b52e | 4965 | static void |
12615cba | 4966 | info_variables_command (const char *args, int from_tty) |
0b39b52e | 4967 | { |
b16507e0 | 4968 | info_print_options opts; |
4acfdd20 AB |
4969 | auto grp = make_info_print_options_def_group (&opts); |
4970 | gdb::option::process_options | |
4971 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4972 | if (args != nullptr && *args == '\0') | |
4973 | args = nullptr; | |
b16507e0 | 4974 | |
4acfdd20 | 4975 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, VARIABLES_DOMAIN, |
b16507e0 | 4976 | opts.type_regexp, from_tty); |
0b39b52e TT |
4977 | } |
4978 | ||
b16507e0 | 4979 | /* Implement the 'info functions' command. */ |
12615cba | 4980 | |
c906108c | 4981 | static void |
12615cba | 4982 | info_functions_command (const char *args, int from_tty) |
c906108c | 4983 | { |
b16507e0 | 4984 | info_print_options opts; |
4acfdd20 AB |
4985 | auto grp = make_info_print_options_def_group (&opts); |
4986 | gdb::option::process_options | |
4987 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
4988 | if (args != nullptr && *args == '\0') | |
4989 | args = nullptr; | |
b16507e0 | 4990 | |
4acfdd20 AB |
4991 | symtab_symbol_info (opts.quiet, opts.exclude_minsyms, args, |
4992 | FUNCTIONS_DOMAIN, opts.type_regexp, from_tty); | |
c906108c SS |
4993 | } |
4994 | ||
a8eab7c6 AB |
4995 | /* Holds the -q option for the 'info types' command. */ |
4996 | ||
4997 | struct info_types_options | |
4998 | { | |
491144b5 | 4999 | bool quiet = false; |
a8eab7c6 AB |
5000 | }; |
5001 | ||
5002 | /* The options used by the 'info types' command. */ | |
5003 | ||
5004 | static const gdb::option::option_def info_types_options_defs[] = { | |
5005 | gdb::option::boolean_option_def<info_types_options> { | |
5006 | "q", | |
5007 | [] (info_types_options *opt) { return &opt->quiet; }, | |
5008 | nullptr, /* show_cmd_cb */ | |
5009 | nullptr /* set_doc */ | |
5010 | } | |
5011 | }; | |
5012 | ||
5013 | /* Returns the option group used by 'info types'. */ | |
5014 | ||
5015 | static gdb::option::option_def_group | |
5016 | make_info_types_options_def_group (info_types_options *opts) | |
5017 | { | |
5018 | return {{info_types_options_defs}, opts}; | |
5019 | } | |
5020 | ||
5021 | /* Implement the 'info types' command. */ | |
357e46e7 | 5022 | |
c906108c | 5023 | static void |
a8eab7c6 | 5024 | info_types_command (const char *args, int from_tty) |
c906108c | 5025 | { |
a8eab7c6 AB |
5026 | info_types_options opts; |
5027 | ||
5028 | auto grp = make_info_types_options_def_group (&opts); | |
5029 | gdb::option::process_options | |
5030 | (&args, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
5031 | if (args != nullptr && *args == '\0') | |
5032 | args = nullptr; | |
4acfdd20 | 5033 | symtab_symbol_info (opts.quiet, false, args, TYPES_DOMAIN, NULL, from_tty); |
a8eab7c6 AB |
5034 | } |
5035 | ||
5036 | /* Command completer for 'info types' command. */ | |
5037 | ||
5038 | static void | |
5039 | info_types_command_completer (struct cmd_list_element *ignore, | |
5040 | completion_tracker &tracker, | |
5041 | const char *text, const char * /* word */) | |
5042 | { | |
5043 | const auto group | |
5044 | = make_info_types_options_def_group (nullptr); | |
5045 | if (gdb::option::complete_options | |
5046 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
5047 | return; | |
5048 | ||
5049 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
5050 | symbol_completer (ignore, tracker, text, word); | |
c906108c SS |
5051 | } |
5052 | ||
c378eb4e | 5053 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 5054 | |
8b93c638 | 5055 | void |
fba45db2 | 5056 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
5057 | { |
5058 | rbreak_command (regexp, from_tty); | |
5059 | } | |
8926118c | 5060 | |
c906108c | 5061 | static void |
0b39b52e | 5062 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 5063 | { |
c80049d3 | 5064 | std::string string; |
96142726 TT |
5065 | const char **files = NULL; |
5066 | const char *file_name; | |
8bd10a10 | 5067 | int nfiles = 0; |
c906108c | 5068 | |
8bd10a10 CM |
5069 | if (regexp) |
5070 | { | |
0b39b52e | 5071 | const char *colon = strchr (regexp, ':'); |
433759f7 | 5072 | |
8bd10a10 CM |
5073 | if (colon && *(colon + 1) != ':') |
5074 | { | |
5075 | int colon_index; | |
96142726 | 5076 | char *local_name; |
8bd10a10 CM |
5077 | |
5078 | colon_index = colon - regexp; | |
224c3ddb | 5079 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
5080 | memcpy (local_name, regexp, colon_index); |
5081 | local_name[colon_index--] = 0; | |
5082 | while (isspace (local_name[colon_index])) | |
5083 | local_name[colon_index--] = 0; | |
5084 | file_name = local_name; | |
8bd10a10 CM |
5085 | files = &file_name; |
5086 | nfiles = 1; | |
529480d0 | 5087 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
5088 | } |
5089 | } | |
5090 | ||
b9c04fb2 TT |
5091 | std::vector<symbol_search> symbols = search_symbols (regexp, |
5092 | FUNCTIONS_DOMAIN, | |
12615cba | 5093 | NULL, |
4acfdd20 AB |
5094 | nfiles, files, |
5095 | false); | |
c906108c | 5096 | |
c80049d3 | 5097 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 5098 | for (const symbol_search &p : symbols) |
c906108c | 5099 | { |
b9c04fb2 | 5100 | if (p.msymbol.minsym == NULL) |
c5aa993b | 5101 | { |
b9c04fb2 | 5102 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 5103 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 5104 | |
c80049d3 TT |
5105 | string = string_printf ("%s:'%s'", fullname, |
5106 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
5107 | break_command (&string[0], from_tty); | |
c7dcbf88 | 5108 | print_symbol_info (FUNCTIONS_DOMAIN, p.symbol, p.block, NULL); |
c5aa993b | 5109 | } |
c906108c | 5110 | else |
c5aa993b | 5111 | { |
c80049d3 TT |
5112 | string = string_printf ("'%s'", |
5113 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 5114 | |
c80049d3 | 5115 | break_command (&string[0], from_tty); |
c5aa993b | 5116 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 5117 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 5118 | } |
c906108c | 5119 | } |
c906108c | 5120 | } |
c906108c | 5121 | \f |
c5aa993b | 5122 | |
c62446b1 | 5123 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
5124 | |
5125 | static int | |
c62446b1 | 5126 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 5127 | const lookup_name_info &lookup_name, |
b5ec771e PA |
5128 | completion_match_result &match_res) |
5129 | { | |
d4c2a405 | 5130 | const language_defn *lang = language_def (symbol_language); |
1976171a | 5131 | |
b5ec771e | 5132 | symbol_name_matcher_ftype *name_match |
618daa93 | 5133 | = get_symbol_name_matcher (lang, lookup_name); |
1976171a | 5134 | |
a207cff2 | 5135 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
5136 | } |
5137 | ||
b5ec771e | 5138 | /* See symtab.h. */ |
c906108c | 5139 | |
b5ec771e | 5140 | void |
eb3ff9a5 | 5141 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 5142 | language symbol_language, |
eb3ff9a5 | 5143 | const char *symname, |
b5ec771e | 5144 | const lookup_name_info &lookup_name, |
0d5cff50 | 5145 | const char *text, const char *word) |
c906108c | 5146 | { |
b5ec771e PA |
5147 | completion_match_result &match_res |
5148 | = tracker.reset_completion_match_result (); | |
5149 | ||
c378eb4e | 5150 | /* Clip symbols that cannot match. */ |
c62446b1 | 5151 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 5152 | return; |
c906108c | 5153 | |
b5ec771e PA |
5154 | /* Refresh SYMNAME from the match string. It's potentially |
5155 | different depending on language. (E.g., on Ada, the match may be | |
5156 | the encoded symbol name wrapped in "<>"). */ | |
5157 | symname = match_res.match.match (); | |
5158 | gdb_assert (symname != NULL); | |
5159 | ||
c906108c | 5160 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 5161 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
5162 | |
5163 | { | |
60a20c19 PA |
5164 | gdb::unique_xmalloc_ptr<char> completion |
5165 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 5166 | |
a207cff2 PA |
5167 | /* Here we pass the match-for-lcd object to add_completion. Some |
5168 | languages match the user text against substrings of symbol | |
5169 | names in some cases. E.g., in C++, "b push_ba" completes to | |
5170 | "std::vector::push_back", "std::string::push_back", etc., and | |
5171 | in this case we want the completion lowest common denominator | |
5172 | to be "push_back" instead of "std::". */ | |
5173 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 5174 | &match_res.match_for_lcd, text, word); |
c906108c SS |
5175 | } |
5176 | } | |
5177 | ||
6da67eb1 PA |
5178 | /* completion_list_add_name wrapper for struct symbol. */ |
5179 | ||
5180 | static void | |
eb3ff9a5 PA |
5181 | completion_list_add_symbol (completion_tracker &tracker, |
5182 | symbol *sym, | |
b5ec771e | 5183 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5184 | const char *text, const char *word) |
5185 | { | |
b5ec771e PA |
5186 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5187 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5188 | lookup_name, text, word); |
6da67eb1 PA |
5189 | } |
5190 | ||
5191 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
5192 | ||
5193 | static void | |
eb3ff9a5 PA |
5194 | completion_list_add_msymbol (completion_tracker &tracker, |
5195 | minimal_symbol *sym, | |
b5ec771e | 5196 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
5197 | const char *text, const char *word) |
5198 | { | |
b5ec771e PA |
5199 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
5200 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 5201 | lookup_name, text, word); |
6da67eb1 PA |
5202 | } |
5203 | ||
b5ec771e | 5204 | |
69636828 AF |
5205 | /* ObjC: In case we are completing on a selector, look as the msymbol |
5206 | again and feed all the selectors into the mill. */ | |
5207 | ||
5208 | static void | |
eb3ff9a5 PA |
5209 | completion_list_objc_symbol (completion_tracker &tracker, |
5210 | struct minimal_symbol *msymbol, | |
b5ec771e | 5211 | const lookup_name_info &lookup_name, |
0d5cff50 | 5212 | const char *text, const char *word) |
69636828 AF |
5213 | { |
5214 | static char *tmp = NULL; | |
5215 | static unsigned int tmplen = 0; | |
9af17804 | 5216 | |
0d5cff50 | 5217 | const char *method, *category, *selector; |
69636828 | 5218 | char *tmp2 = NULL; |
9af17804 | 5219 | |
efd66ac6 | 5220 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
5221 | |
5222 | /* Is it a method? */ | |
5223 | if ((method[0] != '-') && (method[0] != '+')) | |
5224 | return; | |
5225 | ||
1b026119 | 5226 | if (text[0] == '[') |
69636828 | 5227 | /* Complete on shortened method method. */ |
b5ec771e PA |
5228 | completion_list_add_name (tracker, language_objc, |
5229 | method + 1, | |
5230 | lookup_name, | |
1b026119 | 5231 | text, word); |
9af17804 | 5232 | |
69636828 AF |
5233 | while ((strlen (method) + 1) >= tmplen) |
5234 | { | |
5235 | if (tmplen == 0) | |
5236 | tmplen = 1024; | |
5237 | else | |
5238 | tmplen *= 2; | |
224c3ddb | 5239 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5240 | } |
5241 | selector = strchr (method, ' '); | |
5242 | if (selector != NULL) | |
5243 | selector++; | |
9af17804 | 5244 | |
69636828 | 5245 | category = strchr (method, '('); |
9af17804 | 5246 | |
69636828 AF |
5247 | if ((category != NULL) && (selector != NULL)) |
5248 | { | |
5249 | memcpy (tmp, method, (category - method)); | |
5250 | tmp[category - method] = ' '; | |
5251 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 5252 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
5253 | lookup_name, text, word); |
5254 | if (text[0] == '[') | |
b5ec771e | 5255 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 5256 | lookup_name, text, word); |
69636828 | 5257 | } |
9af17804 | 5258 | |
69636828 AF |
5259 | if (selector != NULL) |
5260 | { | |
5261 | /* Complete on selector only. */ | |
5262 | strcpy (tmp, selector); | |
5263 | tmp2 = strchr (tmp, ']'); | |
5264 | if (tmp2 != NULL) | |
5265 | *tmp2 = '\0'; | |
9af17804 | 5266 | |
b5ec771e | 5267 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 5268 | lookup_name, text, word); |
69636828 AF |
5269 | } |
5270 | } | |
5271 | ||
5272 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5273 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5274 | |
6f937416 PA |
5275 | static const char * |
5276 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5277 | { |
5278 | for (; p > text; --p) | |
5279 | { | |
5280 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5281 | continue; | |
5282 | else | |
5283 | { | |
5284 | if ((current_language->la_language == language_objc)) | |
5285 | { | |
c378eb4e | 5286 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5287 | continue; |
5288 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5289 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5290 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5291 | { /* Might be part of a method name. */ |
6f937416 | 5292 | const char *t = p; |
69636828 AF |
5293 | |
5294 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5295 | that we are in the middle of a method name. However, | |
5296 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5297 | Unfortunately we have to find it now to decide. */ | |
5298 | ||
5299 | while (t > text) | |
5300 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5301 | t[-1] == ' ' || t[-1] == ':' || | |
5302 | t[-1] == '(' || t[-1] == ')') | |
5303 | --t; | |
5304 | else | |
5305 | break; | |
5306 | ||
5307 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5308 | p = t - 2; /* Method name detected. */ |
5309 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5310 | } |
5311 | } | |
5312 | break; | |
5313 | } | |
5314 | } | |
5315 | return p; | |
5316 | } | |
5317 | ||
edb3359d | 5318 | static void |
eb3ff9a5 PA |
5319 | completion_list_add_fields (completion_tracker &tracker, |
5320 | struct symbol *sym, | |
b5ec771e | 5321 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 5322 | const char *text, const char *word) |
edb3359d DJ |
5323 | { |
5324 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5325 | { | |
5326 | struct type *t = SYMBOL_TYPE (sym); | |
5327 | enum type_code c = TYPE_CODE (t); | |
5328 | int j; | |
5329 | ||
5330 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5331 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5332 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
5333 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
5334 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 5335 | lookup_name, text, word); |
edb3359d DJ |
5336 | } |
5337 | } | |
5338 | ||
f9d67a22 PA |
5339 | /* See symtab.h. */ |
5340 | ||
5341 | bool | |
5342 | symbol_is_function_or_method (symbol *sym) | |
5343 | { | |
5344 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
5345 | { | |
5346 | case TYPE_CODE_FUNC: | |
5347 | case TYPE_CODE_METHOD: | |
5348 | return true; | |
5349 | default: | |
5350 | return false; | |
5351 | } | |
5352 | } | |
5353 | ||
5354 | /* See symtab.h. */ | |
5355 | ||
5356 | bool | |
5357 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
5358 | { | |
5359 | switch (MSYMBOL_TYPE (msymbol)) | |
5360 | { | |
5361 | case mst_text: | |
5362 | case mst_text_gnu_ifunc: | |
5363 | case mst_solib_trampoline: | |
5364 | case mst_file_text: | |
5365 | return true; | |
5366 | default: | |
5367 | return false; | |
5368 | } | |
5369 | } | |
5370 | ||
ca31ab1d PA |
5371 | /* See symtab.h. */ |
5372 | ||
5373 | bound_minimal_symbol | |
5374 | find_gnu_ifunc (const symbol *sym) | |
5375 | { | |
5376 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
5377 | return {}; | |
5378 | ||
5379 | lookup_name_info lookup_name (SYMBOL_SEARCH_NAME (sym), | |
5380 | symbol_name_match_type::SEARCH_NAME); | |
5381 | struct objfile *objfile = symbol_objfile (sym); | |
5382 | ||
2b1ffcfd | 5383 | CORE_ADDR address = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
ca31ab1d PA |
5384 | minimal_symbol *ifunc = NULL; |
5385 | ||
5386 | iterate_over_minimal_symbols (objfile, lookup_name, | |
5387 | [&] (minimal_symbol *minsym) | |
5388 | { | |
5389 | if (MSYMBOL_TYPE (minsym) == mst_text_gnu_ifunc | |
f50776aa | 5390 | || MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) |
ca31ab1d | 5391 | { |
f50776aa PA |
5392 | CORE_ADDR msym_addr = MSYMBOL_VALUE_ADDRESS (objfile, minsym); |
5393 | if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc) | |
5394 | { | |
5395 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8b88a78e PA |
5396 | msym_addr |
5397 | = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
5398 | msym_addr, | |
5399 | current_top_target ()); | |
f50776aa PA |
5400 | } |
5401 | if (msym_addr == address) | |
5402 | { | |
5403 | ifunc = minsym; | |
5404 | return true; | |
5405 | } | |
ca31ab1d PA |
5406 | } |
5407 | return false; | |
5408 | }); | |
5409 | ||
5410 | if (ifunc != NULL) | |
5411 | return {ifunc, objfile}; | |
5412 | return {}; | |
5413 | } | |
5414 | ||
e11c72c7 GB |
5415 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5416 | ||
5417 | static void | |
5418 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 5419 | completion_tracker &tracker, |
f9d67a22 | 5420 | complete_symbol_mode mode, |
b5ec771e | 5421 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
5422 | const char *text, const char *word, |
5423 | enum type_code code) | |
5424 | { | |
5425 | struct symbol *sym; | |
5426 | const struct block *b; | |
5427 | struct block_iterator iter; | |
5428 | int i; | |
5429 | ||
ff6fa247 GB |
5430 | if (cust == NULL) |
5431 | return; | |
5432 | ||
e11c72c7 GB |
5433 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5434 | { | |
5435 | QUIT; | |
5436 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5437 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5438 | { | |
f9d67a22 PA |
5439 | if (completion_skip_symbol (mode, sym)) |
5440 | continue; | |
5441 | ||
e11c72c7 GB |
5442 | if (code == TYPE_CODE_UNDEF |
5443 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5444 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 5445 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 5446 | lookup_name, |
e11c72c7 GB |
5447 | text, word); |
5448 | } | |
5449 | } | |
5450 | } | |
5451 | ||
eb3ff9a5 PA |
5452 | void |
5453 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
5454 | (completion_tracker &tracker, complete_symbol_mode mode, |
5455 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
5456 | const char *text, const char *word, |
5457 | const char *break_on, enum type_code code) | |
c906108c | 5458 | { |
41d27058 JB |
5459 | /* Problem: All of the symbols have to be copied because readline |
5460 | frees them. I'm not going to worry about this; hopefully there | |
5461 | won't be that many. */ | |
5462 | ||
de4f826b | 5463 | struct symbol *sym; |
3977b71f | 5464 | const struct block *b; |
edb3359d | 5465 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5466 | struct block_iterator iter; |
c906108c | 5467 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5468 | const char *sym_text; |
c906108c | 5469 | |
41d27058 | 5470 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
5471 | if (mode == complete_symbol_mode::LINESPEC) |
5472 | sym_text = text; | |
5473 | else | |
c906108c | 5474 | { |
6f937416 | 5475 | const char *p; |
c906108c | 5476 | char quote_found; |
6f937416 | 5477 | const char *quote_pos = NULL; |
c906108c SS |
5478 | |
5479 | /* First see if this is a quoted string. */ | |
5480 | quote_found = '\0'; | |
5481 | for (p = text; *p != '\0'; ++p) | |
5482 | { | |
5483 | if (quote_found != '\0') | |
5484 | { | |
5485 | if (*p == quote_found) | |
5486 | /* Found close quote. */ | |
5487 | quote_found = '\0'; | |
5488 | else if (*p == '\\' && p[1] == quote_found) | |
5489 | /* A backslash followed by the quote character | |
c5aa993b | 5490 | doesn't end the string. */ |
c906108c SS |
5491 | ++p; |
5492 | } | |
5493 | else if (*p == '\'' || *p == '"') | |
5494 | { | |
5495 | quote_found = *p; | |
5496 | quote_pos = p; | |
5497 | } | |
5498 | } | |
5499 | if (quote_found == '\'') | |
5500 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5501 | sym_text = quote_pos + 1; | |
5502 | else if (quote_found == '"') | |
5503 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5504 | to complete it any other way. */ |
c94fdfd0 | 5505 | { |
ef0b411a | 5506 | return; |
c94fdfd0 | 5507 | } |
c906108c SS |
5508 | else |
5509 | { | |
5510 | /* It is not a quoted string. Break it based on the characters | |
5511 | which are in symbols. */ | |
5512 | while (p > text) | |
5513 | { | |
95699ff0 | 5514 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5515 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5516 | --p; |
5517 | else | |
5518 | break; | |
5519 | } | |
5520 | sym_text = p; | |
5521 | } | |
5522 | } | |
5523 | ||
1b026119 | 5524 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5525 | |
c906108c SS |
5526 | /* At this point scan through the misc symbol vectors and add each |
5527 | symbol you find to the list. Eventually we want to ignore | |
5528 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5529 | handled by the psymtab code below). */ |
c906108c | 5530 | |
2f68a895 TT |
5531 | if (code == TYPE_CODE_UNDEF) |
5532 | { | |
2030c079 | 5533 | for (objfile *objfile : current_program_space->objfiles ()) |
2f68a895 | 5534 | { |
7932255d | 5535 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
5536 | { |
5537 | QUIT; | |
9af17804 | 5538 | |
5325b9bf TT |
5539 | if (completion_skip_symbol (mode, msymbol)) |
5540 | continue; | |
f9d67a22 | 5541 | |
5325b9bf TT |
5542 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
5543 | sym_text, word); | |
eb3ff9a5 | 5544 | |
5325b9bf TT |
5545 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
5546 | sym_text, word); | |
5547 | } | |
2f68a895 TT |
5548 | } |
5549 | } | |
c906108c | 5550 | |
e11c72c7 | 5551 | /* Add completions for all currently loaded symbol tables. */ |
2030c079 | 5552 | for (objfile *objfile : current_program_space->objfiles ()) |
d8aeb77f | 5553 | { |
b669c953 | 5554 | for (compunit_symtab *cust : objfile->compunits ()) |
d8aeb77f TT |
5555 | add_symtab_completions (cust, tracker, mode, lookup_name, |
5556 | sym_text, word, code); | |
5557 | } | |
e11c72c7 | 5558 | |
14bc53a8 PA |
5559 | /* Look through the partial symtabs for all symbols which begin by |
5560 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5561 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5562 | lookup_name, |
5563 | NULL, | |
14bc53a8 PA |
5564 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5565 | { | |
5566 | add_symtab_completions (symtab, | |
f9d67a22 | 5567 | tracker, mode, lookup_name, |
1b026119 | 5568 | sym_text, word, code); |
14bc53a8 PA |
5569 | }, |
5570 | ALL_DOMAIN); | |
e11c72c7 | 5571 | |
c906108c | 5572 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5573 | complete on local vars). Also catch fields of types defined in |
5574 | this places which match our text string. Only complete on types | |
c378eb4e | 5575 | visible from current context. */ |
edb3359d DJ |
5576 | |
5577 | b = get_selected_block (0); | |
5578 | surrounding_static_block = block_static_block (b); | |
5579 | surrounding_global_block = block_global_block (b); | |
5580 | if (surrounding_static_block != NULL) | |
5581 | while (b != surrounding_static_block) | |
5582 | { | |
5583 | QUIT; | |
c906108c | 5584 | |
edb3359d DJ |
5585 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5586 | { | |
2f68a895 TT |
5587 | if (code == TYPE_CODE_UNDEF) |
5588 | { | |
b5ec771e | 5589 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5590 | sym_text, word); |
b5ec771e | 5591 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5592 | sym_text, word); |
2f68a895 TT |
5593 | } |
5594 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5595 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5596 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5597 | sym_text, word); |
edb3359d | 5598 | } |
c5aa993b | 5599 | |
edb3359d DJ |
5600 | /* Stop when we encounter an enclosing function. Do not stop for |
5601 | non-inlined functions - the locals of the enclosing function | |
5602 | are in scope for a nested function. */ | |
5603 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5604 | break; | |
5605 | b = BLOCK_SUPERBLOCK (b); | |
5606 | } | |
c906108c | 5607 | |
edb3359d | 5608 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5609 | |
2f68a895 TT |
5610 | if (code == TYPE_CODE_UNDEF) |
5611 | { | |
5612 | if (surrounding_static_block != NULL) | |
5613 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5614 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5615 | sym_text, word); |
edb3359d | 5616 | |
2f68a895 TT |
5617 | if (surrounding_global_block != NULL) |
5618 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5619 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5620 | sym_text, word); |
2f68a895 | 5621 | } |
c906108c | 5622 | |
2f68a895 TT |
5623 | /* Skip macros if we are completing a struct tag -- arguable but |
5624 | usually what is expected. */ | |
5625 | if (current_language->la_macro_expansion == macro_expansion_c | |
5626 | && code == TYPE_CODE_UNDEF) | |
9a044a89 | 5627 | { |
f6c2623e | 5628 | gdb::unique_xmalloc_ptr<struct macro_scope> scope; |
9a044a89 | 5629 | |
14bc53a8 PA |
5630 | /* This adds a macro's name to the current completion list. */ |
5631 | auto add_macro_name = [&] (const char *macro_name, | |
5632 | const macro_definition *, | |
5633 | macro_source_file *, | |
5634 | int) | |
5635 | { | |
1b026119 PA |
5636 | completion_list_add_name (tracker, language_c, macro_name, |
5637 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5638 | }; |
5639 | ||
9a044a89 TT |
5640 | /* Add any macros visible in the default scope. Note that this |
5641 | may yield the occasional wrong result, because an expression | |
5642 | might be evaluated in a scope other than the default. For | |
5643 | example, if the user types "break file:line if <TAB>", the | |
5644 | resulting expression will be evaluated at "file:line" -- but | |
5645 | at there does not seem to be a way to detect this at | |
5646 | completion time. */ | |
5647 | scope = default_macro_scope (); | |
5648 | if (scope) | |
f6c2623e TT |
5649 | macro_for_each_in_scope (scope->file, scope->line, |
5650 | add_macro_name); | |
9a044a89 TT |
5651 | |
5652 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5653 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5654 | } |
ef0b411a GB |
5655 | } |
5656 | ||
eb3ff9a5 PA |
5657 | void |
5658 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5659 | complete_symbol_mode mode, |
b5ec771e | 5660 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5661 | const char *text, const char *word, |
5662 | enum type_code code) | |
f55ee35c | 5663 | { |
c6756f62 | 5664 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5665 | name_match_type, |
eb3ff9a5 PA |
5666 | text, word, "", |
5667 | code); | |
f55ee35c JK |
5668 | } |
5669 | ||
eb3ff9a5 PA |
5670 | /* Collect all symbols (regardless of class) which begin by matching |
5671 | TEXT. */ | |
41d27058 | 5672 | |
eb3ff9a5 PA |
5673 | void |
5674 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5675 | complete_symbol_mode mode, |
b5ec771e | 5676 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5677 | const char *text, const char *word) |
41d27058 | 5678 | { |
c6756f62 | 5679 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5680 | name_match_type, |
eb3ff9a5 PA |
5681 | text, word, |
5682 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5683 | } |
5684 | ||
eb3ff9a5 PA |
5685 | /* Like collect_symbol_completion_matches, but only collect |
5686 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5687 | |
eb3ff9a5 PA |
5688 | void |
5689 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5690 | const char *text, const char *word, | |
5691 | enum type_code code) | |
2f68a895 | 5692 | { |
c6756f62 | 5693 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5694 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5695 | |
2f68a895 TT |
5696 | gdb_assert (code == TYPE_CODE_UNION |
5697 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5698 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5699 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5700 | name_match_type, |
eb3ff9a5 | 5701 | text, word, code); |
41d27058 JB |
5702 | } |
5703 | ||
eb3ff9a5 PA |
5704 | /* Like collect_symbol_completion_matches, but collects a list of |
5705 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5706 | |
eb3ff9a5 PA |
5707 | void |
5708 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5709 | complete_symbol_mode mode, |
b5ec771e | 5710 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5711 | const char *text, const char *word, |
5712 | const char *srcfile) | |
c94fdfd0 | 5713 | { |
c94fdfd0 | 5714 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5715 | const char *sym_text; |
c94fdfd0 EZ |
5716 | |
5717 | /* Now look for the symbol we are supposed to complete on. | |
5718 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5719 | if (mode == complete_symbol_mode::LINESPEC) |
5720 | sym_text = text; | |
5721 | else | |
c94fdfd0 | 5722 | { |
6f937416 | 5723 | const char *p; |
c94fdfd0 | 5724 | char quote_found; |
6f937416 | 5725 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5726 | |
5727 | /* First see if this is a quoted string. */ | |
5728 | quote_found = '\0'; | |
5729 | for (p = text; *p != '\0'; ++p) | |
5730 | { | |
5731 | if (quote_found != '\0') | |
5732 | { | |
5733 | if (*p == quote_found) | |
5734 | /* Found close quote. */ | |
5735 | quote_found = '\0'; | |
5736 | else if (*p == '\\' && p[1] == quote_found) | |
5737 | /* A backslash followed by the quote character | |
5738 | doesn't end the string. */ | |
5739 | ++p; | |
5740 | } | |
5741 | else if (*p == '\'' || *p == '"') | |
5742 | { | |
5743 | quote_found = *p; | |
5744 | quote_pos = p; | |
5745 | } | |
5746 | } | |
5747 | if (quote_found == '\'') | |
5748 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5749 | sym_text = quote_pos + 1; | |
5750 | else if (quote_found == '"') | |
5751 | /* A double-quoted string is never a symbol, nor does it make sense | |
5752 | to complete it any other way. */ | |
5753 | { | |
eb3ff9a5 | 5754 | return; |
c94fdfd0 EZ |
5755 | } |
5756 | else | |
5757 | { | |
69636828 AF |
5758 | /* Not a quoted string. */ |
5759 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5760 | } |
5761 | } | |
5762 | ||
1b026119 | 5763 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5764 | |
8f14146e PA |
5765 | /* Go through symtabs for SRCFILE and check the externs and statics |
5766 | for symbols which match. */ | |
5767 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5768 | { |
8f14146e | 5769 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5770 | tracker, mode, lookup_name, |
1b026119 | 5771 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5772 | return false; |
5773 | }); | |
e27852be DE |
5774 | } |
5775 | ||
c94fdfd0 EZ |
5776 | /* A helper function for make_source_files_completion_list. It adds |
5777 | another file name to a list of possible completions, growing the | |
5778 | list as necessary. */ | |
5779 | ||
5780 | static void | |
6f937416 | 5781 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5782 | completion_list *list) |
c94fdfd0 | 5783 | { |
60a20c19 | 5784 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5785 | } |
5786 | ||
5787 | static int | |
5788 | not_interesting_fname (const char *fname) | |
5789 | { | |
5790 | static const char *illegal_aliens[] = { | |
5791 | "_globals_", /* inserted by coff_symtab_read */ | |
5792 | NULL | |
5793 | }; | |
5794 | int i; | |
5795 | ||
5796 | for (i = 0; illegal_aliens[i]; i++) | |
5797 | { | |
0ba1096a | 5798 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5799 | return 1; |
5800 | } | |
5801 | return 0; | |
5802 | } | |
5803 | ||
ccefe4c4 TT |
5804 | /* An object of this type is passed as the user_data argument to |
5805 | map_partial_symbol_filenames. */ | |
5806 | struct add_partial_filename_data | |
5807 | { | |
9fdc877b | 5808 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5809 | const char *text; |
5810 | const char *word; | |
ccefe4c4 | 5811 | int text_len; |
eb3ff9a5 | 5812 | completion_list *list; |
ccefe4c4 TT |
5813 | }; |
5814 | ||
5815 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5816 | |
ccefe4c4 | 5817 | static void |
2837d59e | 5818 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5819 | void *user_data) |
5820 | { | |
19ba03f4 SM |
5821 | struct add_partial_filename_data *data |
5822 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5823 | |
5824 | if (not_interesting_fname (filename)) | |
5825 | return; | |
bbf2f4df | 5826 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5827 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5828 | { |
5829 | /* This file matches for a completion; add it to the | |
5830 | current list of matches. */ | |
49c4e619 | 5831 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5832 | } |
5833 | else | |
5834 | { | |
5835 | const char *base_name = lbasename (filename); | |
433759f7 | 5836 | |
ccefe4c4 | 5837 | if (base_name != filename |
bbf2f4df | 5838 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5839 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5840 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5841 | } |
5842 | } | |
5843 | ||
eb3ff9a5 | 5844 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5845 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5846 | program. */ |
c94fdfd0 | 5847 | |
eb3ff9a5 | 5848 | completion_list |
6f937416 | 5849 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5850 | { |
c94fdfd0 | 5851 | size_t text_len = strlen (text); |
eb3ff9a5 | 5852 | completion_list list; |
31889e00 | 5853 | const char *base_name; |
ccefe4c4 | 5854 | struct add_partial_filename_data datum; |
c94fdfd0 | 5855 | |
c94fdfd0 EZ |
5856 | if (!have_full_symbols () && !have_partial_symbols ()) |
5857 | return list; | |
5858 | ||
bbf2f4df | 5859 | filename_seen_cache filenames_seen; |
9fdc877b | 5860 | |
2030c079 | 5861 | for (objfile *objfile : current_program_space->objfiles ()) |
c94fdfd0 | 5862 | { |
b669c953 | 5863 | for (compunit_symtab *cu : objfile->compunits ()) |
c94fdfd0 | 5864 | { |
8b31193a TT |
5865 | for (symtab *s : compunit_filetabs (cu)) |
5866 | { | |
5867 | if (not_interesting_fname (s->filename)) | |
5868 | continue; | |
5869 | if (!filenames_seen.seen (s->filename) | |
5870 | && filename_ncmp (s->filename, text, text_len) == 0) | |
5871 | { | |
5872 | /* This file matches for a completion; add it to the current | |
5873 | list of matches. */ | |
5874 | add_filename_to_list (s->filename, text, word, &list); | |
5875 | } | |
5876 | else | |
5877 | { | |
5878 | /* NOTE: We allow the user to type a base name when the | |
5879 | debug info records leading directories, but not the other | |
5880 | way around. This is what subroutines of breakpoint | |
5881 | command do when they parse file names. */ | |
5882 | base_name = lbasename (s->filename); | |
5883 | if (base_name != s->filename | |
5884 | && !filenames_seen.seen (base_name) | |
5885 | && filename_ncmp (base_name, text, text_len) == 0) | |
5886 | add_filename_to_list (base_name, text, word, &list); | |
5887 | } | |
5888 | } | |
c94fdfd0 EZ |
5889 | } |
5890 | } | |
5891 | ||
bbf2f4df | 5892 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5893 | datum.text = text; |
5894 | datum.word = word; | |
5895 | datum.text_len = text_len; | |
5896 | datum.list = &list; | |
bb4142cf DE |
5897 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5898 | 0 /*need_fullname*/); | |
9fdc877b | 5899 | |
c94fdfd0 EZ |
5900 | return list; |
5901 | } | |
c906108c | 5902 | \f |
51cc5b07 | 5903 | /* Track MAIN */ |
32ac0d11 TT |
5904 | |
5905 | /* Return the "main_info" object for the current program space. If | |
5906 | the object has not yet been created, create it and fill in some | |
5907 | default values. */ | |
5908 | ||
5909 | static struct main_info * | |
5910 | get_main_info (void) | |
5911 | { | |
a32ad8c5 | 5912 | struct main_info *info = main_progspace_key.get (current_program_space); |
32ac0d11 TT |
5913 | |
5914 | if (info == NULL) | |
5915 | { | |
3d548a53 TT |
5916 | /* It may seem strange to store the main name in the progspace |
5917 | and also in whatever objfile happens to see a main name in | |
5918 | its debug info. The reason for this is mainly historical: | |
5919 | gdb returned "main" as the name even if no function named | |
5920 | "main" was defined the program; and this approach lets us | |
5921 | keep compatibility. */ | |
a32ad8c5 | 5922 | info = main_progspace_key.emplace (current_program_space); |
32ac0d11 TT |
5923 | } |
5924 | ||
5925 | return info; | |
5926 | } | |
5927 | ||
3d548a53 | 5928 | static void |
9e6c82ad | 5929 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5930 | { |
32ac0d11 TT |
5931 | struct main_info *info = get_main_info (); |
5932 | ||
5933 | if (info->name_of_main != NULL) | |
51cc5b07 | 5934 | { |
32ac0d11 TT |
5935 | xfree (info->name_of_main); |
5936 | info->name_of_main = NULL; | |
5937 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5938 | } |
5939 | if (name != NULL) | |
5940 | { | |
32ac0d11 TT |
5941 | info->name_of_main = xstrdup (name); |
5942 | info->language_of_main = lang; | |
51cc5b07 AC |
5943 | } |
5944 | } | |
5945 | ||
ea53e89f JB |
5946 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5947 | accordingly. */ | |
5948 | ||
5949 | static void | |
5950 | find_main_name (void) | |
5951 | { | |
cd6c7346 | 5952 | const char *new_main_name; |
3d548a53 TT |
5953 | |
5954 | /* First check the objfiles to see whether a debuginfo reader has | |
5955 | picked up the appropriate main name. Historically the main name | |
5956 | was found in a more or less random way; this approach instead | |
5957 | relies on the order of objfile creation -- which still isn't | |
5958 | guaranteed to get the correct answer, but is just probably more | |
5959 | accurate. */ | |
2030c079 | 5960 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
5961 | { |
5962 | if (objfile->per_bfd->name_of_main != NULL) | |
5963 | { | |
5964 | set_main_name (objfile->per_bfd->name_of_main, | |
5965 | objfile->per_bfd->language_of_main); | |
5966 | return; | |
5967 | } | |
5968 | } | |
ea53e89f JB |
5969 | |
5970 | /* Try to see if the main procedure is in Ada. */ | |
5971 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5972 | be to add a new method in the language vector, and call this | |
5973 | method for each language until one of them returns a non-empty | |
5974 | name. This would allow us to remove this hard-coded call to | |
5975 | an Ada function. It is not clear that this is a better approach | |
5976 | at this point, because all methods need to be written in a way | |
c378eb4e | 5977 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5978 | important that a method does not return a wrong name for the main |
5979 | procedure if the main procedure is actually written in a different | |
5980 | language. It is easy to guaranty this with Ada, since we use a | |
5981 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5982 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5983 | be guarantied for languages such as C, for instance. This suggests |
5984 | that order of call for these methods becomes important, which means | |
5985 | a more complicated approach. */ | |
5986 | new_main_name = ada_main_name (); | |
5987 | if (new_main_name != NULL) | |
9af17804 | 5988 | { |
9e6c82ad | 5989 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5990 | return; |
5991 | } | |
5992 | ||
63778547 IB |
5993 | new_main_name = d_main_name (); |
5994 | if (new_main_name != NULL) | |
5995 | { | |
5996 | set_main_name (new_main_name, language_d); | |
5997 | return; | |
5998 | } | |
5999 | ||
a766d390 DE |
6000 | new_main_name = go_main_name (); |
6001 | if (new_main_name != NULL) | |
6002 | { | |
9e6c82ad | 6003 | set_main_name (new_main_name, language_go); |
a766d390 DE |
6004 | return; |
6005 | } | |
6006 | ||
cd6c7346 PM |
6007 | new_main_name = pascal_main_name (); |
6008 | if (new_main_name != NULL) | |
9af17804 | 6009 | { |
9e6c82ad | 6010 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
6011 | return; |
6012 | } | |
6013 | ||
ea53e89f JB |
6014 | /* The languages above didn't identify the name of the main procedure. |
6015 | Fallback to "main". */ | |
9e6c82ad | 6016 | set_main_name ("main", language_unknown); |
ea53e89f JB |
6017 | } |
6018 | ||
cd215b2e TT |
6019 | /* See symtab.h. */ |
6020 | ||
6021 | const char * | |
6022 | main_name () | |
51cc5b07 | 6023 | { |
32ac0d11 TT |
6024 | struct main_info *info = get_main_info (); |
6025 | ||
6026 | if (info->name_of_main == NULL) | |
ea53e89f JB |
6027 | find_main_name (); |
6028 | ||
32ac0d11 | 6029 | return info->name_of_main; |
51cc5b07 AC |
6030 | } |
6031 | ||
9e6c82ad TT |
6032 | /* Return the language of the main function. If it is not known, |
6033 | return language_unknown. */ | |
6034 | ||
6035 | enum language | |
6036 | main_language (void) | |
6037 | { | |
32ac0d11 TT |
6038 | struct main_info *info = get_main_info (); |
6039 | ||
6040 | if (info->name_of_main == NULL) | |
6041 | find_main_name (); | |
6042 | ||
6043 | return info->language_of_main; | |
9e6c82ad TT |
6044 | } |
6045 | ||
ea53e89f JB |
6046 | /* Handle ``executable_changed'' events for the symtab module. */ |
6047 | ||
6048 | static void | |
781b42b0 | 6049 | symtab_observer_executable_changed (void) |
ea53e89f JB |
6050 | { |
6051 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 6052 | set_main_name (NULL, language_unknown); |
ea53e89f | 6053 | } |
51cc5b07 | 6054 | |
a6c727b2 DJ |
6055 | /* Return 1 if the supplied producer string matches the ARM RealView |
6056 | compiler (armcc). */ | |
6057 | ||
ececd218 | 6058 | bool |
a6c727b2 DJ |
6059 | producer_is_realview (const char *producer) |
6060 | { | |
6061 | static const char *const arm_idents[] = { | |
6062 | "ARM C Compiler, ADS", | |
6063 | "Thumb C Compiler, ADS", | |
6064 | "ARM C++ Compiler, ADS", | |
6065 | "Thumb C++ Compiler, ADS", | |
6066 | "ARM/Thumb C/C++ Compiler, RVCT", | |
6067 | "ARM C/C++ Compiler, RVCT" | |
6068 | }; | |
6069 | int i; | |
6070 | ||
6071 | if (producer == NULL) | |
ececd218 | 6072 | return false; |
a6c727b2 DJ |
6073 | |
6074 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 6075 | if (startswith (producer, arm_idents[i])) |
ececd218 | 6076 | return true; |
a6c727b2 | 6077 | |
ececd218 | 6078 | return false; |
a6c727b2 | 6079 | } |
ed0616c6 | 6080 | |
f1e6e072 TT |
6081 | \f |
6082 | ||
6083 | /* The next index to hand out in response to a registration request. */ | |
6084 | ||
6085 | static int next_aclass_value = LOC_FINAL_VALUE; | |
6086 | ||
6087 | /* The maximum number of "aclass" registrations we support. This is | |
6088 | constant for convenience. */ | |
6089 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
6090 | ||
6091 | /* The objects representing the various "aclass" values. The elements | |
6092 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
6093 | elements are those registered at gdb initialization time. */ | |
6094 | ||
6095 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
6096 | ||
6097 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
6098 | so that it can be const. */ | |
6099 | ||
6100 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
6101 | ||
6102 | /* Make sure we saved enough room in struct symbol. */ | |
6103 | ||
6104 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
6105 | ||
6106 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
6107 | is the ops vector associated with this index. This returns the new | |
6108 | index, which should be used as the aclass_index field for symbols | |
6109 | of this type. */ | |
6110 | ||
6111 | int | |
6112 | register_symbol_computed_impl (enum address_class aclass, | |
6113 | const struct symbol_computed_ops *ops) | |
6114 | { | |
6115 | int result = next_aclass_value++; | |
6116 | ||
6117 | gdb_assert (aclass == LOC_COMPUTED); | |
6118 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6119 | symbol_impl[result].aclass = aclass; | |
6120 | symbol_impl[result].ops_computed = ops; | |
6121 | ||
24d6c2a0 TT |
6122 | /* Sanity check OPS. */ |
6123 | gdb_assert (ops != NULL); | |
6124 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6125 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6126 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6127 | gdb_assert (ops->read_variable != NULL); |
6128 | ||
f1e6e072 TT |
6129 | return result; |
6130 | } | |
6131 | ||
6132 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6133 | OPS is the ops vector associated with this index. This returns the | |
6134 | new index, which should be used as the aclass_index field for symbols | |
6135 | of this type. */ | |
6136 | ||
6137 | int | |
6138 | register_symbol_block_impl (enum address_class aclass, | |
6139 | const struct symbol_block_ops *ops) | |
6140 | { | |
6141 | int result = next_aclass_value++; | |
6142 | ||
6143 | gdb_assert (aclass == LOC_BLOCK); | |
6144 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6145 | symbol_impl[result].aclass = aclass; | |
6146 | symbol_impl[result].ops_block = ops; | |
6147 | ||
6148 | /* Sanity check OPS. */ | |
6149 | gdb_assert (ops != NULL); | |
6150 | gdb_assert (ops->find_frame_base_location != NULL); | |
6151 | ||
6152 | return result; | |
6153 | } | |
6154 | ||
6155 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6156 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6157 | this index. This returns the new index, which should be used as | |
6158 | the aclass_index field for symbols of this type. */ | |
6159 | ||
6160 | int | |
6161 | register_symbol_register_impl (enum address_class aclass, | |
6162 | const struct symbol_register_ops *ops) | |
6163 | { | |
6164 | int result = next_aclass_value++; | |
6165 | ||
6166 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6167 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6168 | symbol_impl[result].aclass = aclass; | |
6169 | symbol_impl[result].ops_register = ops; | |
6170 | ||
6171 | return result; | |
6172 | } | |
6173 | ||
6174 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6175 | address_class. */ | |
6176 | ||
6177 | static void | |
6178 | initialize_ordinary_address_classes (void) | |
6179 | { | |
6180 | int i; | |
6181 | ||
6182 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6183 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6184 | } |
6185 | ||
6186 | \f | |
6187 | ||
1994afbf DE |
6188 | /* Helper function to initialize the fields of an objfile-owned symbol. |
6189 | It assumed that *SYM is already all zeroes. */ | |
6190 | ||
6191 | static void | |
6192 | initialize_objfile_symbol_1 (struct symbol *sym) | |
6193 | { | |
6194 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
6195 | SYMBOL_SECTION (sym) = -1; | |
6196 | } | |
6197 | ||
6198 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
6199 | |
6200 | void | |
38bf1463 | 6201 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
6202 | { |
6203 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 6204 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
6205 | } |
6206 | ||
6207 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6208 | obstack. */ | |
6209 | ||
6210 | struct symbol * | |
6211 | allocate_symbol (struct objfile *objfile) | |
6212 | { | |
6213 | struct symbol *result; | |
6214 | ||
6215 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 6216 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6217 | |
6218 | return result; | |
6219 | } | |
6220 | ||
6221 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6222 | obstack. */ | |
6223 | ||
6224 | struct template_symbol * | |
6225 | allocate_template_symbol (struct objfile *objfile) | |
6226 | { | |
6227 | struct template_symbol *result; | |
6228 | ||
6229 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 6230 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6231 | |
6232 | return result; | |
6233 | } | |
6234 | ||
08be3fe3 DE |
6235 | /* See symtab.h. */ |
6236 | ||
6237 | struct objfile * | |
6238 | symbol_objfile (const struct symbol *symbol) | |
6239 | { | |
1994afbf DE |
6240 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6241 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6242 | } |
6243 | ||
6244 | /* See symtab.h. */ | |
6245 | ||
6246 | struct gdbarch * | |
6247 | symbol_arch (const struct symbol *symbol) | |
6248 | { | |
1994afbf DE |
6249 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6250 | return symbol->owner.arch; | |
6251 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6252 | } |
6253 | ||
6254 | /* See symtab.h. */ | |
6255 | ||
6256 | struct symtab * | |
6257 | symbol_symtab (const struct symbol *symbol) | |
6258 | { | |
1994afbf DE |
6259 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6260 | return symbol->owner.symtab; | |
08be3fe3 DE |
6261 | } |
6262 | ||
6263 | /* See symtab.h. */ | |
6264 | ||
6265 | void | |
6266 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6267 | { | |
1994afbf DE |
6268 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6269 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6270 | } |
6271 | ||
4b610737 TT |
6272 | /* See symtab.h. */ |
6273 | ||
6274 | CORE_ADDR | |
6275 | get_symbol_address (const struct symbol *sym) | |
6276 | { | |
6277 | gdb_assert (sym->maybe_copied); | |
6278 | gdb_assert (SYMBOL_CLASS (sym) == LOC_STATIC); | |
6279 | ||
6280 | const char *linkage_name = SYMBOL_LINKAGE_NAME (sym); | |
6281 | ||
6282 | for (objfile *objfile : current_program_space->objfiles ()) | |
6283 | { | |
6284 | bound_minimal_symbol minsym | |
6285 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6286 | if (minsym.minsym != nullptr) | |
6287 | return BMSYMBOL_VALUE_ADDRESS (minsym); | |
6288 | } | |
6289 | return sym->ginfo.value.address; | |
6290 | } | |
6291 | ||
6292 | /* See symtab.h. */ | |
6293 | ||
6294 | CORE_ADDR | |
6295 | get_msymbol_address (struct objfile *objf, const struct minimal_symbol *minsym) | |
6296 | { | |
6297 | gdb_assert (minsym->maybe_copied); | |
6298 | gdb_assert ((objf->flags & OBJF_MAINLINE) == 0); | |
6299 | ||
6300 | const char *linkage_name = MSYMBOL_LINKAGE_NAME (minsym); | |
6301 | ||
6302 | for (objfile *objfile : current_program_space->objfiles ()) | |
6303 | { | |
6304 | if ((objfile->flags & OBJF_MAINLINE) != 0) | |
6305 | { | |
6306 | bound_minimal_symbol found | |
6307 | = lookup_minimal_symbol_linkage (linkage_name, objfile); | |
6308 | if (found.minsym != nullptr) | |
6309 | return BMSYMBOL_VALUE_ADDRESS (found); | |
6310 | } | |
6311 | } | |
6312 | return (minsym->value.address | |
6313 | + ANOFFSET (objf->section_offsets, minsym->section)); | |
6314 | } | |
6315 | ||
e623cf5d TT |
6316 | \f |
6317 | ||
c906108c | 6318 | void |
fba45db2 | 6319 | _initialize_symtab (void) |
c906108c | 6320 | { |
60cfcb20 AB |
6321 | cmd_list_element *c; |
6322 | ||
f1e6e072 TT |
6323 | initialize_ordinary_address_classes (); |
6324 | ||
60cfcb20 AB |
6325 | c = add_info ("variables", info_variables_command, |
6326 | info_print_args_help (_("\ | |
12615cba | 6327 | All global and static variable names or those matching REGEXPs.\n\ |
4acfdd20 | 6328 | Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6329 | Prints the global and static variables.\n"), |
4acfdd20 AB |
6330 | _("global and static variables"), |
6331 | true)); | |
60cfcb20 | 6332 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6333 | if (dbx_commands) |
60cfcb20 AB |
6334 | { |
6335 | c = add_com ("whereis", class_info, info_variables_command, | |
6336 | info_print_args_help (_("\ | |
12615cba | 6337 | All global and static variable names, or those matching REGEXPs.\n\ |
4acfdd20 | 6338 | Usage: whereis [-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 AB |
6342 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
6343 | } | |
c906108c | 6344 | |
60cfcb20 AB |
6345 | c = add_info ("functions", info_functions_command, |
6346 | info_print_args_help (_("\ | |
12615cba | 6347 | All function names or those matching REGEXPs.\n\ |
4acfdd20 | 6348 | Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\ |
12615cba | 6349 | Prints the functions.\n"), |
4acfdd20 AB |
6350 | _("functions"), |
6351 | true)); | |
60cfcb20 | 6352 | set_cmd_completer_handle_brkchars (c, info_print_command_completer); |
c906108c | 6353 | |
a8eab7c6 AB |
6354 | c = add_info ("types", info_types_command, _("\ |
6355 | All type names, or those matching REGEXP.\n\ | |
6356 | Usage: info types [-q] [REGEXP]\n\ | |
6357 | Print information about all types matching REGEXP, or all types if no\n\ | |
6358 | REGEXP is given. The optional flag -q disables printing of headers.")); | |
6359 | set_cmd_completer_handle_brkchars (c, info_types_command_completer); | |
c906108c | 6360 | |
28cd9371 PW |
6361 | const auto info_sources_opts = make_info_sources_options_def_group (nullptr); |
6362 | ||
6363 | static std::string info_sources_help | |
6364 | = gdb::option::build_help (_("\ | |
6365 | All source files in the program or those matching REGEXP.\n\ | |
6366 | Usage: info sources [OPTION]... [REGEXP]\n\ | |
6367 | By default, REGEXP is used to match anywhere in the filename.\n\ | |
6368 | \n\ | |
6369 | Options:\n\ | |
6370 | %OPTIONS%"), | |
6371 | info_sources_opts); | |
6372 | ||
6373 | c = add_info ("sources", info_sources_command, info_sources_help.c_str ()); | |
6374 | set_cmd_completer_handle_brkchars (c, info_sources_command_completer); | |
c906108c SS |
6375 | |
6376 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6377 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6378 | |
717d2f5a JB |
6379 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6380 | multiple_symbols_modes, &multiple_symbols_mode, | |
6381 | _("\ | |
590042fc | 6382 | Set how the debugger handles ambiguities in expressions."), _("\ |
717d2f5a JB |
6383 | Show how the debugger handles ambiguities in expressions."), _("\ |
6384 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6385 | NULL, NULL, &setlist, &showlist); | |
6386 | ||
c011a4f4 DE |
6387 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6388 | &basenames_may_differ, _("\ | |
6389 | Set whether a source file may have multiple base names."), _("\ | |
6390 | Show whether a source file may have multiple base names."), _("\ | |
6391 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6392 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6393 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6394 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6395 | but it allows the same file be known by more than one base name.\n\ | |
6396 | If not set (the default), all source files are assumed to have just\n\ | |
6397 | one base name, and gdb will do file name comparisons more efficiently."), | |
6398 | NULL, NULL, | |
6399 | &setlist, &showlist); | |
6400 | ||
db0fec5c DE |
6401 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6402 | _("Set debugging of symbol table creation."), | |
6403 | _("Show debugging of symbol table creation."), _("\ | |
6404 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6405 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6406 | A value greater than 1 provides more verbose information."), | |
6407 | NULL, | |
6408 | NULL, | |
6409 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6410 | |
cc485e62 DE |
6411 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6412 | _("\ | |
6413 | Set debugging of symbol lookup."), _("\ | |
6414 | Show debugging of symbol lookup."), _("\ | |
6415 | When enabled (non-zero), symbol lookups are logged."), | |
6416 | NULL, NULL, | |
6417 | &setdebuglist, &showdebuglist); | |
6418 | ||
f57d2163 DE |
6419 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6420 | &new_symbol_cache_size, | |
6421 | _("Set the size of the symbol cache."), | |
6422 | _("Show the size of the symbol cache."), _("\ | |
6423 | The size of the symbol cache.\n\ | |
6424 | If zero then the symbol cache is disabled."), | |
6425 | set_symbol_cache_size_handler, NULL, | |
6426 | &maintenance_set_cmdlist, | |
6427 | &maintenance_show_cmdlist); | |
6428 | ||
6429 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6430 | _("Dump the symbol cache for each program space."), | |
6431 | &maintenanceprintlist); | |
6432 | ||
6433 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6434 | maintenance_print_symbol_cache_statistics, | |
6435 | _("Print symbol cache statistics for each program space."), | |
6436 | &maintenanceprintlist); | |
6437 | ||
6438 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6439 | maintenance_flush_symbol_cache, | |
6440 | _("Flush the symbol cache for each program space."), | |
6441 | &maintenancelist); | |
6442 | ||
76727919 TT |
6443 | gdb::observers::executable_changed.attach (symtab_observer_executable_changed); |
6444 | gdb::observers::new_objfile.attach (symtab_new_objfile_observer); | |
6445 | gdb::observers::free_objfile.attach (symtab_free_objfile_observer); | |
c906108c | 6446 | } |