Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 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" |
cce0e923 | 44 | #include "fnmatch.h" |
2de7ced7 DJ |
45 | #include "hashtab.h" |
46 | ||
04ea0df1 | 47 | #include "gdb_obstack.h" |
fe898f56 | 48 | #include "block.h" |
de4f826b | 49 | #include "dictionary.h" |
c906108c SS |
50 | |
51 | #include <sys/types.h> | |
52 | #include <fcntl.h> | |
53ce3c39 | 53 | #include <sys/stat.h> |
c906108c | 54 | #include <ctype.h> |
015a42b4 | 55 | #include "cp-abi.h" |
71c25dea | 56 | #include "cp-support.h" |
ea53e89f | 57 | #include "observer.h" |
3a40aaa0 | 58 | #include "solist.h" |
9a044a89 TT |
59 | #include "macrotab.h" |
60 | #include "macroscope.h" | |
c906108c | 61 | |
270140bd | 62 | #include "parser-defs.h" |
ef0b411a | 63 | #include "completer.h" |
5ed8105e | 64 | #include "progspace-and-thread.h" |
2d7cc5c7 | 65 | #include "common/gdb_optional.h" |
bbf2f4df | 66 | #include "filename-seen-cache.h" |
46a62268 | 67 | #include "arch-utils.h" |
b9c04fb2 | 68 | #include <algorithm> |
ccefe4c4 | 69 | |
ff6c39cf | 70 | /* Forward declarations for local functions. */ |
c906108c | 71 | |
0b39b52e | 72 | static void rbreak_command (const char *, int); |
c906108c | 73 | |
f8eba3c6 | 74 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 75 | |
d12307c1 PMR |
76 | static struct block_symbol |
77 | lookup_symbol_aux (const char *name, | |
78 | const struct block *block, | |
79 | const domain_enum domain, | |
80 | enum language language, | |
81 | struct field_of_this_result *); | |
fba7f19c | 82 | |
e4051eeb | 83 | static |
d12307c1 PMR |
84 | struct block_symbol lookup_local_symbol (const char *name, |
85 | const struct block *block, | |
86 | const domain_enum domain, | |
87 | enum language language); | |
8155455b | 88 | |
d12307c1 | 89 | static struct block_symbol |
fe2a438d DE |
90 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
91 | const char *name, const domain_enum domain); | |
c906108c | 92 | |
b6b80672 PA |
93 | /* See symtab.h. */ |
94 | const struct block_symbol null_block_symbol = { NULL, NULL }; | |
95 | ||
32ac0d11 TT |
96 | /* Program space key for finding name and language of "main". */ |
97 | ||
98 | static const struct program_space_data *main_progspace_key; | |
99 | ||
100 | /* Type of the data stored on the program space. */ | |
101 | ||
102 | struct main_info | |
103 | { | |
104 | /* Name of "main". */ | |
105 | ||
106 | char *name_of_main; | |
107 | ||
108 | /* Language of "main". */ | |
109 | ||
110 | enum language language_of_main; | |
111 | }; | |
112 | ||
f57d2163 DE |
113 | /* Program space key for finding its symbol cache. */ |
114 | ||
115 | static const struct program_space_data *symbol_cache_key; | |
116 | ||
117 | /* The default symbol cache size. | |
118 | There is no extra cpu cost for large N (except when flushing the cache, | |
119 | which is rare). The value here is just a first attempt. A better default | |
120 | value may be higher or lower. A prime number can make up for a bad hash | |
121 | computation, so that's why the number is what it is. */ | |
122 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
123 | ||
124 | /* The maximum symbol cache size. | |
125 | There's no method to the decision of what value to use here, other than | |
126 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
127 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
128 | ||
129 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
130 | symbol in any objfile. */ | |
d12307c1 PMR |
131 | #define SYMBOL_LOOKUP_FAILED \ |
132 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
133 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
134 | |
135 | /* Recording lookups that don't find the symbol is just as important, if not | |
136 | more so, than recording found symbols. */ | |
137 | ||
138 | enum symbol_cache_slot_state | |
139 | { | |
140 | SYMBOL_SLOT_UNUSED, | |
141 | SYMBOL_SLOT_NOT_FOUND, | |
142 | SYMBOL_SLOT_FOUND | |
143 | }; | |
144 | ||
52059ffd TT |
145 | struct symbol_cache_slot |
146 | { | |
147 | enum symbol_cache_slot_state state; | |
148 | ||
149 | /* The objfile that was current when the symbol was looked up. | |
150 | This is only needed for global blocks, but for simplicity's sake | |
151 | we allocate the space for both. If data shows the extra space used | |
152 | for static blocks is a problem, we can split things up then. | |
153 | ||
154 | Global blocks need cache lookup to include the objfile context because | |
155 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
156 | which can traverse objfiles in, effectively, any order, depending on | |
157 | the current objfile, thus affecting which symbol is found. Normally, | |
158 | only the current objfile is searched first, and then the rest are | |
159 | searched in recorded order; but putting cache lookup inside | |
160 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
161 | Instead we just make the current objfile part of the context of | |
162 | cache lookup. This means we can record the same symbol multiple times, | |
163 | each with a different "current objfile" that was in effect when the | |
164 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
165 | const struct objfile *objfile_context; | |
166 | ||
167 | union | |
168 | { | |
d12307c1 | 169 | struct block_symbol found; |
52059ffd TT |
170 | struct |
171 | { | |
172 | char *name; | |
173 | domain_enum domain; | |
174 | } not_found; | |
175 | } value; | |
176 | }; | |
177 | ||
f57d2163 DE |
178 | /* Symbols don't specify global vs static block. |
179 | So keep them in separate caches. */ | |
180 | ||
181 | struct block_symbol_cache | |
182 | { | |
183 | unsigned int hits; | |
184 | unsigned int misses; | |
185 | unsigned int collisions; | |
186 | ||
187 | /* SYMBOLS is a variable length array of this size. | |
188 | One can imagine that in general one cache (global/static) should be a | |
189 | fraction of the size of the other, but there's no data at the moment | |
190 | on which to decide. */ | |
191 | unsigned int size; | |
192 | ||
52059ffd | 193 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
194 | }; |
195 | ||
196 | /* The symbol cache. | |
197 | ||
198 | Searching for symbols in the static and global blocks over multiple objfiles | |
199 | again and again can be slow, as can searching very big objfiles. This is a | |
200 | simple cache to improve symbol lookup performance, which is critical to | |
201 | overall gdb performance. | |
202 | ||
203 | Symbols are hashed on the name, its domain, and block. | |
204 | They are also hashed on their objfile for objfile-specific lookups. */ | |
205 | ||
206 | struct symbol_cache | |
207 | { | |
208 | struct block_symbol_cache *global_symbols; | |
209 | struct block_symbol_cache *static_symbols; | |
210 | }; | |
211 | ||
45cfd468 | 212 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 213 | unsigned int symtab_create_debug = 0; |
45cfd468 | 214 | |
cc485e62 DE |
215 | /* When non-zero, print debugging messages related to symbol lookup. */ |
216 | unsigned int symbol_lookup_debug = 0; | |
217 | ||
f57d2163 DE |
218 | /* The size of the cache is staged here. */ |
219 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
220 | ||
221 | /* The current value of the symbol cache size. | |
222 | This is saved so that if the user enters a value too big we can restore | |
223 | the original value from here. */ | |
224 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
225 | ||
c011a4f4 DE |
226 | /* Non-zero if a file may be known by two different basenames. |
227 | This is the uncommon case, and significantly slows down gdb. | |
228 | Default set to "off" to not slow down the common case. */ | |
229 | int basenames_may_differ = 0; | |
230 | ||
717d2f5a JB |
231 | /* Allow the user to configure the debugger behavior with respect |
232 | to multiple-choice menus when more than one symbol matches during | |
233 | a symbol lookup. */ | |
234 | ||
7fc830e2 MK |
235 | const char multiple_symbols_ask[] = "ask"; |
236 | const char multiple_symbols_all[] = "all"; | |
237 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 238 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
239 | { |
240 | multiple_symbols_ask, | |
241 | multiple_symbols_all, | |
242 | multiple_symbols_cancel, | |
243 | NULL | |
244 | }; | |
245 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
246 | ||
247 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
248 | ||
249 | const char * | |
250 | multiple_symbols_select_mode (void) | |
251 | { | |
252 | return multiple_symbols_mode; | |
253 | } | |
254 | ||
20c681d1 DE |
255 | /* Return the name of a domain_enum. */ |
256 | ||
257 | const char * | |
258 | domain_name (domain_enum e) | |
259 | { | |
260 | switch (e) | |
261 | { | |
262 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
263 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
264 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 265 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
266 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
267 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
268 | default: gdb_assert_not_reached ("bad domain_enum"); | |
269 | } | |
270 | } | |
271 | ||
272 | /* Return the name of a search_domain . */ | |
273 | ||
274 | const char * | |
275 | search_domain_name (enum search_domain e) | |
276 | { | |
277 | switch (e) | |
278 | { | |
279 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
280 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
281 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
282 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
283 | default: gdb_assert_not_reached ("bad search_domain"); | |
284 | } | |
285 | } | |
286 | ||
43f3e411 | 287 | /* See symtab.h. */ |
db0fec5c | 288 | |
43f3e411 DE |
289 | struct symtab * |
290 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 291 | { |
43f3e411 | 292 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 293 | |
43f3e411 DE |
294 | /* The primary file symtab is the first one in the list. */ |
295 | return COMPUNIT_FILETABS (cust); | |
296 | } | |
297 | ||
298 | /* See symtab.h. */ | |
299 | ||
300 | enum language | |
301 | compunit_language (const struct compunit_symtab *cust) | |
302 | { | |
303 | struct symtab *symtab = compunit_primary_filetab (cust); | |
304 | ||
305 | /* The language of the compunit symtab is the language of its primary | |
306 | source file. */ | |
307 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
308 | } |
309 | ||
4aac40c8 TT |
310 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
311 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
312 | describes what we advertise). Returns true if they match, false |
313 | otherwise. */ | |
4aac40c8 TT |
314 | |
315 | int | |
b57a636e | 316 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
317 | { |
318 | int len = strlen (filename); | |
b57a636e | 319 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
320 | |
321 | if (len < search_len) | |
322 | return 0; | |
323 | ||
324 | /* The tail of FILENAME must match. */ | |
325 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
326 | return 0; | |
327 | ||
328 | /* Either the names must completely match, or the character | |
329 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
330 | directory separator. |
331 | ||
af529f8f JK |
332 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
333 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
334 | absolute path. The sama applies for "c:\file.c" possibly | |
335 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
336 | ||
d84fca2c JK |
337 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
338 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
339 | to put the "c:file.c" name into debug info. Such compatibility | |
340 | works only on GDB built for DOS host. */ | |
4aac40c8 | 341 | return (len == search_len |
af529f8f JK |
342 | || (!IS_ABSOLUTE_PATH (search_name) |
343 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
344 | || (HAS_DRIVE_SPEC (filename) |
345 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
346 | } | |
347 | ||
cce0e923 DE |
348 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
349 | Heads up on the order of the arguments. They match the order of | |
350 | compare_filenames_for_search, but it's the opposite of the order of | |
351 | arguments to gdb_filename_fnmatch. */ | |
352 | ||
353 | int | |
354 | compare_glob_filenames_for_search (const char *filename, | |
355 | const char *search_name) | |
356 | { | |
357 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
358 | all /s have to be explicitly specified. */ | |
359 | int file_path_elements = count_path_elements (filename); | |
360 | int search_path_elements = count_path_elements (search_name); | |
361 | ||
362 | if (search_path_elements > file_path_elements) | |
363 | return 0; | |
364 | ||
365 | if (IS_ABSOLUTE_PATH (search_name)) | |
366 | { | |
367 | return (search_path_elements == file_path_elements | |
368 | && gdb_filename_fnmatch (search_name, filename, | |
369 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
370 | } | |
371 | ||
372 | { | |
373 | const char *file_to_compare | |
374 | = strip_leading_path_elements (filename, | |
375 | file_path_elements - search_path_elements); | |
376 | ||
377 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
378 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
379 | } | |
380 | } | |
381 | ||
f8eba3c6 TT |
382 | /* Check for a symtab of a specific name by searching some symtabs. |
383 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 384 | |
b2d23133 DE |
385 | If NAME is not absolute, then REAL_PATH is NULL |
386 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
387 | ||
14bc53a8 PA |
388 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
389 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 390 | |
43f3e411 DE |
391 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
392 | Each symtab within the specified compunit symtab is also searched. | |
393 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
394 | search until the end of the list. */ |
395 | ||
14bc53a8 | 396 | bool |
f8eba3c6 | 397 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 398 | const char *real_path, |
43f3e411 | 399 | struct compunit_symtab *first, |
14bc53a8 PA |
400 | struct compunit_symtab *after_last, |
401 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 402 | { |
43f3e411 DE |
403 | struct compunit_symtab *cust; |
404 | struct symtab *s; | |
c011a4f4 | 405 | const char* base_name = lbasename (name); |
1f84b619 | 406 | |
43f3e411 | 407 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 408 | { |
43f3e411 | 409 | ALL_COMPUNIT_FILETABS (cust, s) |
a94e8645 | 410 | { |
43f3e411 DE |
411 | if (compare_filenames_for_search (s->filename, name)) |
412 | { | |
14bc53a8 PA |
413 | if (callback (s)) |
414 | return true; | |
43f3e411 DE |
415 | continue; |
416 | } | |
a94e8645 | 417 | |
43f3e411 DE |
418 | /* Before we invoke realpath, which can get expensive when many |
419 | files are involved, do a quick comparison of the basenames. */ | |
420 | if (! basenames_may_differ | |
421 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
422 | continue; | |
a94e8645 | 423 | |
43f3e411 | 424 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 425 | { |
14bc53a8 PA |
426 | if (callback (s)) |
427 | return true; | |
a94e8645 DE |
428 | continue; |
429 | } | |
43f3e411 DE |
430 | |
431 | /* If the user gave us an absolute path, try to find the file in | |
432 | this symtab and use its absolute path. */ | |
433 | if (real_path != NULL) | |
434 | { | |
435 | const char *fullname = symtab_to_fullname (s); | |
436 | ||
437 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
438 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
439 | if (FILENAME_CMP (real_path, fullname) == 0) | |
440 | { | |
14bc53a8 PA |
441 | if (callback (s)) |
442 | return true; | |
43f3e411 DE |
443 | continue; |
444 | } | |
445 | } | |
a94e8645 | 446 | } |
f8eba3c6 | 447 | } |
58d370e0 | 448 | |
14bc53a8 | 449 | return false; |
f8eba3c6 TT |
450 | } |
451 | ||
452 | /* Check for a symtab of a specific name; first in symtabs, then in | |
453 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
454 | in the symtab filename will also work. | |
455 | ||
14bc53a8 PA |
456 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
457 | true, the search stops. */ | |
f8eba3c6 TT |
458 | |
459 | void | |
460 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 461 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 462 | { |
f8eba3c6 | 463 | struct objfile *objfile; |
14bc53a8 | 464 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
465 | |
466 | /* Here we are interested in canonicalizing an absolute path, not | |
467 | absolutizing a relative path. */ | |
468 | if (IS_ABSOLUTE_PATH (name)) | |
469 | { | |
14278e1f | 470 | real_path = gdb_realpath (name); |
14bc53a8 | 471 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
472 | } |
473 | ||
474 | ALL_OBJFILES (objfile) | |
14bc53a8 PA |
475 | { |
476 | if (iterate_over_some_symtabs (name, real_path.get (), | |
477 | objfile->compunit_symtabs, NULL, | |
478 | callback)) | |
f8eba3c6 | 479 | return; |
14bc53a8 | 480 | } |
f8eba3c6 | 481 | |
c906108c SS |
482 | /* Same search rules as above apply here, but now we look thru the |
483 | psymtabs. */ | |
484 | ||
ccefe4c4 | 485 | ALL_OBJFILES (objfile) |
14bc53a8 PA |
486 | { |
487 | if (objfile->sf | |
488 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
489 | name, | |
490 | real_path.get (), | |
491 | callback)) | |
f8eba3c6 | 492 | return; |
14bc53a8 | 493 | } |
c906108c | 494 | } |
f8eba3c6 TT |
495 | |
496 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
497 | symtab, or NULL. */ | |
498 | ||
499 | struct symtab * | |
500 | lookup_symtab (const char *name) | |
501 | { | |
502 | struct symtab *result = NULL; | |
503 | ||
14bc53a8 PA |
504 | iterate_over_symtabs (name, [&] (symtab *symtab) |
505 | { | |
506 | result = symtab; | |
507 | return true; | |
508 | }); | |
509 | ||
f8eba3c6 TT |
510 | return result; |
511 | } | |
512 | ||
c906108c SS |
513 | \f |
514 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
515 | full method name, which consist of the class name (from T), the unadorned | |
516 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 517 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
518 | |
519 | char * | |
fba45db2 | 520 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
521 | { |
522 | int mangled_name_len; | |
523 | char *mangled_name; | |
524 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
525 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 526 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 527 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
0d5cff50 | 528 | const char *newname = type_name_no_tag (type); |
c906108c SS |
529 | |
530 | /* Does the form of physname indicate that it is the full mangled name | |
531 | of a constructor (not just the args)? */ | |
532 | int is_full_physname_constructor; | |
533 | ||
534 | int is_constructor; | |
015a42b4 | 535 | int is_destructor = is_destructor_name (physname); |
c906108c | 536 | /* Need a new type prefix. */ |
e6a959d6 PA |
537 | const char *const_prefix = method->is_const ? "C" : ""; |
538 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
539 | char buf[20]; |
540 | int len = (newname == NULL ? 0 : strlen (newname)); | |
541 | ||
43630227 PS |
542 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
543 | or an operator name. */ | |
544 | if ((physname[0] == '_' && physname[1] == 'Z') | |
545 | || is_operator_name (field_name)) | |
235d1e03 EZ |
546 | return xstrdup (physname); |
547 | ||
015a42b4 | 548 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 549 | |
3e43a32a MS |
550 | is_constructor = is_full_physname_constructor |
551 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
552 | |
553 | if (!is_destructor) | |
61012eef | 554 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
555 | |
556 | if (is_destructor || is_full_physname_constructor) | |
557 | { | |
c5aa993b JM |
558 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
559 | strcpy (mangled_name, physname); | |
c906108c SS |
560 | return mangled_name; |
561 | } | |
562 | ||
563 | if (len == 0) | |
564 | { | |
8c042590 | 565 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
566 | } |
567 | else if (physname[0] == 't' || physname[0] == 'Q') | |
568 | { | |
569 | /* The physname for template and qualified methods already includes | |
c5aa993b | 570 | the class name. */ |
8c042590 | 571 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
572 | newname = NULL; |
573 | len = 0; | |
574 | } | |
575 | else | |
576 | { | |
8c042590 PM |
577 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
578 | volatile_prefix, len); | |
c906108c SS |
579 | } |
580 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 581 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 582 | |
433759f7 MS |
583 | mangled_name = (char *) xmalloc (mangled_name_len); |
584 | if (is_constructor) | |
585 | mangled_name[0] = '\0'; | |
586 | else | |
587 | strcpy (mangled_name, field_name); | |
588 | ||
c906108c SS |
589 | strcat (mangled_name, buf); |
590 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
591 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 592 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
593 | if (newname != NULL) |
594 | strcat (mangled_name, newname); | |
595 | ||
596 | strcat (mangled_name, physname); | |
597 | return (mangled_name); | |
598 | } | |
12af6855 | 599 | |
b250c185 | 600 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 601 | correctly allocated. */ |
eca864fe | 602 | |
b250c185 SW |
603 | void |
604 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 605 | const char *name, |
ccde22c0 | 606 | struct obstack *obstack) |
b250c185 | 607 | { |
7c5fdd25 | 608 | if (gsymbol->language == language_ada) |
f85f34ed TT |
609 | { |
610 | if (name == NULL) | |
611 | { | |
612 | gsymbol->ada_mangled = 0; | |
613 | gsymbol->language_specific.obstack = obstack; | |
614 | } | |
615 | else | |
616 | { | |
617 | gsymbol->ada_mangled = 1; | |
615b3f62 | 618 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
619 | } |
620 | } | |
29df156d | 621 | else |
615b3f62 | 622 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
623 | } |
624 | ||
625 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 626 | |
0d5cff50 | 627 | const char * |
b250c185 SW |
628 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
629 | { | |
7c5fdd25 | 630 | if (gsymbol->language == language_ada) |
f85f34ed TT |
631 | { |
632 | if (!gsymbol->ada_mangled) | |
633 | return NULL; | |
634 | /* Fall through. */ | |
635 | } | |
636 | ||
615b3f62 | 637 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
638 | } |
639 | ||
12af6855 | 640 | \f |
89aad1f9 | 641 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 642 | depending upon the language for the symbol. */ |
eca864fe | 643 | |
89aad1f9 | 644 | void |
33e5013e | 645 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
646 | enum language language, |
647 | struct obstack *obstack) | |
89aad1f9 EZ |
648 | { |
649 | gsymbol->language = language; | |
7c5fdd25 DE |
650 | if (gsymbol->language == language_cplus |
651 | || gsymbol->language == language_d | |
a766d390 | 652 | || gsymbol->language == language_go |
f55ee35c JK |
653 | || gsymbol->language == language_objc |
654 | || gsymbol->language == language_fortran) | |
89aad1f9 | 655 | { |
f85f34ed TT |
656 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
657 | } | |
658 | else if (gsymbol->language == language_ada) | |
659 | { | |
660 | gdb_assert (gsymbol->ada_mangled == 0); | |
661 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 662 | } |
89aad1f9 EZ |
663 | else |
664 | { | |
665 | memset (&gsymbol->language_specific, 0, | |
666 | sizeof (gsymbol->language_specific)); | |
667 | } | |
668 | } | |
669 | ||
2de7ced7 DJ |
670 | /* Functions to initialize a symbol's mangled name. */ |
671 | ||
04a679b8 TT |
672 | /* Objects of this type are stored in the demangled name hash table. */ |
673 | struct demangled_name_entry | |
674 | { | |
9d2ceabe | 675 | const char *mangled; |
04a679b8 TT |
676 | char demangled[1]; |
677 | }; | |
678 | ||
679 | /* Hash function for the demangled name hash. */ | |
eca864fe | 680 | |
04a679b8 TT |
681 | static hashval_t |
682 | hash_demangled_name_entry (const void *data) | |
683 | { | |
19ba03f4 SM |
684 | const struct demangled_name_entry *e |
685 | = (const struct demangled_name_entry *) data; | |
433759f7 | 686 | |
04a679b8 TT |
687 | return htab_hash_string (e->mangled); |
688 | } | |
689 | ||
690 | /* Equality function for the demangled name hash. */ | |
eca864fe | 691 | |
04a679b8 TT |
692 | static int |
693 | eq_demangled_name_entry (const void *a, const void *b) | |
694 | { | |
19ba03f4 SM |
695 | const struct demangled_name_entry *da |
696 | = (const struct demangled_name_entry *) a; | |
697 | const struct demangled_name_entry *db | |
698 | = (const struct demangled_name_entry *) b; | |
433759f7 | 699 | |
04a679b8 TT |
700 | return strcmp (da->mangled, db->mangled) == 0; |
701 | } | |
702 | ||
2de7ced7 DJ |
703 | /* Create the hash table used for demangled names. Each hash entry is |
704 | a pair of strings; one for the mangled name and one for the demangled | |
705 | name. The entry is hashed via just the mangled name. */ | |
706 | ||
707 | static void | |
708 | create_demangled_names_hash (struct objfile *objfile) | |
709 | { | |
710 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 711 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
712 | Choosing a much larger table size wastes memory, and saves only about |
713 | 1% in symbol reading. */ | |
714 | ||
84a1243b | 715 | objfile->per_bfd->demangled_names_hash = htab_create_alloc |
04a679b8 | 716 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 717 | NULL, xcalloc, xfree); |
2de7ced7 | 718 | } |
12af6855 | 719 | |
2de7ced7 | 720 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
721 | language of that symbol. If the language is set to language_auto, |
722 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
723 | then set the language appropriately. The returned name is allocated |
724 | by the demangler and should be xfree'd. */ | |
12af6855 | 725 | |
2de7ced7 DJ |
726 | static char * |
727 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
728 | const char *mangled) | |
12af6855 | 729 | { |
12af6855 | 730 | char *demangled = NULL; |
8b302db8 | 731 | int i; |
12af6855 JB |
732 | |
733 | if (gsymbol->language == language_unknown) | |
734 | gsymbol->language = language_auto; | |
1bae87b9 | 735 | |
8b302db8 | 736 | if (gsymbol->language != language_auto) |
1bae87b9 | 737 | { |
8b302db8 TT |
738 | const struct language_defn *lang = language_def (gsymbol->language); |
739 | ||
740 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
741 | return demangled; | |
6aecb9c2 | 742 | } |
8b302db8 TT |
743 | |
744 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 745 | { |
8b302db8 TT |
746 | enum language l = (enum language) i; |
747 | const struct language_defn *lang = language_def (l); | |
748 | ||
749 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 750 | { |
8b302db8 | 751 | gsymbol->language = l; |
a766d390 DE |
752 | return demangled; |
753 | } | |
754 | } | |
755 | ||
2de7ced7 DJ |
756 | return NULL; |
757 | } | |
758 | ||
980cae7a | 759 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
760 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
761 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
762 | NUL-terminated, then this function assumes that NAME is already | |
763 | correctly saved (either permanently or with a lifetime tied to the | |
764 | objfile), and it will not be copied. | |
765 | ||
766 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 767 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 768 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
769 | |
770 | void | |
771 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
772 | const char *linkage_name, int len, int copy_name, |
773 | struct objfile *objfile) | |
2de7ced7 | 774 | { |
04a679b8 | 775 | struct demangled_name_entry **slot; |
980cae7a DC |
776 | /* A 0-terminated copy of the linkage name. */ |
777 | const char *linkage_name_copy; | |
04a679b8 | 778 | struct demangled_name_entry entry; |
84a1243b | 779 | struct objfile_per_bfd_storage *per_bfd = objfile->per_bfd; |
2de7ced7 | 780 | |
b06ead72 JB |
781 | if (gsymbol->language == language_ada) |
782 | { | |
783 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 784 | we can save some space by not storing the demangled name. */ |
04a679b8 | 785 | if (!copy_name) |
0d5cff50 | 786 | gsymbol->name = linkage_name; |
04a679b8 TT |
787 | else |
788 | { | |
224c3ddb SM |
789 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
790 | len + 1); | |
0d5cff50 DE |
791 | |
792 | memcpy (name, linkage_name, len); | |
793 | name[len] = '\0'; | |
794 | gsymbol->name = name; | |
04a679b8 | 795 | } |
84a1243b | 796 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
797 | |
798 | return; | |
799 | } | |
800 | ||
84a1243b | 801 | if (per_bfd->demangled_names_hash == NULL) |
04a679b8 TT |
802 | create_demangled_names_hash (objfile); |
803 | ||
9c37b5ae | 804 | if (linkage_name[len] != '\0') |
2de7ced7 | 805 | { |
980cae7a DC |
806 | char *alloc_name; |
807 | ||
9c37b5ae | 808 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 809 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 810 | alloc_name[len] = '\0'; |
980cae7a DC |
811 | |
812 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
813 | } |
814 | else | |
9c37b5ae | 815 | linkage_name_copy = linkage_name; |
2de7ced7 | 816 | |
9c37b5ae | 817 | entry.mangled = linkage_name_copy; |
04a679b8 | 818 | slot = ((struct demangled_name_entry **) |
84a1243b | 819 | htab_find_slot (per_bfd->demangled_names_hash, |
04a679b8 | 820 | &entry, INSERT)); |
2de7ced7 DJ |
821 | |
822 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
823 | if (*slot == NULL |
824 | /* A C version of the symbol may have already snuck into the table. | |
825 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
826 | || (gsymbol->language == language_go | |
827 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 828 | { |
980cae7a DC |
829 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
830 | linkage_name_copy); | |
2de7ced7 DJ |
831 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
832 | ||
04a679b8 | 833 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 834 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
835 | mangled name saved, and we don't have a demangled name. So, |
836 | you might think we could save a little space by not recording | |
837 | this in the hash table at all. | |
838 | ||
839 | It turns out that it is actually important to still save such | |
840 | an entry in the hash table, because storing this name gives | |
705b5767 | 841 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 842 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 843 | { |
224c3ddb SM |
844 | *slot |
845 | = ((struct demangled_name_entry *) | |
846 | obstack_alloc (&per_bfd->storage_obstack, | |
847 | offsetof (struct demangled_name_entry, demangled) | |
848 | + demangled_len + 1)); | |
9c37b5ae | 849 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
850 | } |
851 | else | |
852 | { | |
9d2ceabe TT |
853 | char *mangled_ptr; |
854 | ||
04a679b8 TT |
855 | /* If we must copy the mangled name, put it directly after |
856 | the demangled name so we can have a single | |
857 | allocation. */ | |
224c3ddb SM |
858 | *slot |
859 | = ((struct demangled_name_entry *) | |
860 | obstack_alloc (&per_bfd->storage_obstack, | |
861 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 862 | + len + demangled_len + 2)); |
9d2ceabe | 863 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 864 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 865 | (*slot)->mangled = mangled_ptr; |
04a679b8 TT |
866 | } |
867 | ||
980cae7a | 868 | if (demangled_name != NULL) |
2de7ced7 | 869 | { |
04a679b8 | 870 | strcpy ((*slot)->demangled, demangled_name); |
2de7ced7 DJ |
871 | xfree (demangled_name); |
872 | } | |
873 | else | |
04a679b8 | 874 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
875 | } |
876 | ||
9c37b5ae | 877 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 878 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 879 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 880 | &per_bfd->storage_obstack); |
2de7ced7 | 881 | else |
84a1243b | 882 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
883 | } |
884 | ||
22abf04a DC |
885 | /* Return the source code name of a symbol. In languages where |
886 | demangling is necessary, this is the demangled name. */ | |
887 | ||
0d5cff50 | 888 | const char * |
22abf04a DC |
889 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
890 | { | |
9af17804 | 891 | switch (gsymbol->language) |
22abf04a | 892 | { |
1f8173e6 | 893 | case language_cplus: |
6aecb9c2 | 894 | case language_d: |
a766d390 | 895 | case language_go: |
1f8173e6 | 896 | case language_objc: |
f55ee35c | 897 | case language_fortran: |
b250c185 SW |
898 | if (symbol_get_demangled_name (gsymbol) != NULL) |
899 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
900 | break; |
901 | case language_ada: | |
f85f34ed | 902 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
903 | default: |
904 | break; | |
22abf04a | 905 | } |
1f8173e6 | 906 | return gsymbol->name; |
22abf04a DC |
907 | } |
908 | ||
9cc0d196 | 909 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 910 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 911 | |
0d5cff50 | 912 | const char * |
df8a16a1 | 913 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 914 | { |
c6e5ee5e SDJ |
915 | const char *dem_name = NULL; |
916 | ||
9af17804 | 917 | switch (gsymbol->language) |
1f8173e6 PH |
918 | { |
919 | case language_cplus: | |
6aecb9c2 | 920 | case language_d: |
a766d390 | 921 | case language_go: |
1f8173e6 | 922 | case language_objc: |
f55ee35c | 923 | case language_fortran: |
c6e5ee5e | 924 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
925 | break; |
926 | case language_ada: | |
f85f34ed | 927 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
928 | break; |
929 | default: | |
930 | break; | |
931 | } | |
c6e5ee5e | 932 | return dem_name; |
9cc0d196 | 933 | } |
fe39c653 | 934 | |
4725b721 PH |
935 | /* Return the search name of a symbol---generally the demangled or |
936 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 937 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 938 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 939 | |
0d5cff50 | 940 | const char * |
fc062ac6 JB |
941 | symbol_search_name (const struct general_symbol_info *gsymbol) |
942 | { | |
1f8173e6 PH |
943 | if (gsymbol->language == language_ada) |
944 | return gsymbol->name; | |
945 | else | |
946 | return symbol_natural_name (gsymbol); | |
4725b721 | 947 | } |
b5ec771e PA |
948 | |
949 | /* See symtab.h. */ | |
950 | ||
951 | bool | |
952 | symbol_matches_search_name (const struct general_symbol_info *gsymbol, | |
953 | const lookup_name_info &name) | |
954 | { | |
955 | symbol_name_matcher_ftype *name_match | |
956 | = language_get_symbol_name_matcher (language_def (gsymbol->language), | |
957 | name); | |
958 | return name_match (symbol_search_name (gsymbol), name, NULL); | |
959 | } | |
960 | ||
c906108c SS |
961 | \f |
962 | ||
94277a38 DJ |
963 | /* Return 1 if the two sections are the same, or if they could |
964 | plausibly be copies of each other, one in an original object | |
965 | file and another in a separated debug file. */ | |
966 | ||
967 | int | |
714835d5 UW |
968 | matching_obj_sections (struct obj_section *obj_first, |
969 | struct obj_section *obj_second) | |
94277a38 | 970 | { |
714835d5 UW |
971 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
972 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
973 | struct objfile *obj; |
974 | ||
975 | /* If they're the same section, then they match. */ | |
976 | if (first == second) | |
977 | return 1; | |
978 | ||
979 | /* If either is NULL, give up. */ | |
980 | if (first == NULL || second == NULL) | |
981 | return 0; | |
982 | ||
983 | /* This doesn't apply to absolute symbols. */ | |
984 | if (first->owner == NULL || second->owner == NULL) | |
985 | return 0; | |
986 | ||
987 | /* If they're in the same object file, they must be different sections. */ | |
988 | if (first->owner == second->owner) | |
989 | return 0; | |
990 | ||
991 | /* Check whether the two sections are potentially corresponding. They must | |
992 | have the same size, address, and name. We can't compare section indexes, | |
993 | which would be more reliable, because some sections may have been | |
994 | stripped. */ | |
995 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
996 | return 0; | |
997 | ||
818f79f6 | 998 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 999 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
1000 | - bfd_get_start_address (first->owner) |
1001 | != bfd_get_section_vma (second->owner, second) | |
1002 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1003 | return 0; |
1004 | ||
1005 | if (bfd_get_section_name (first->owner, first) == NULL | |
1006 | || bfd_get_section_name (second->owner, second) == NULL | |
1007 | || strcmp (bfd_get_section_name (first->owner, first), | |
1008 | bfd_get_section_name (second->owner, second)) != 0) | |
1009 | return 0; | |
1010 | ||
1011 | /* Otherwise check that they are in corresponding objfiles. */ | |
1012 | ||
1013 | ALL_OBJFILES (obj) | |
1014 | if (obj->obfd == first->owner) | |
1015 | break; | |
1016 | gdb_assert (obj != NULL); | |
1017 | ||
1018 | if (obj->separate_debug_objfile != NULL | |
1019 | && obj->separate_debug_objfile->obfd == second->owner) | |
1020 | return 1; | |
1021 | if (obj->separate_debug_objfile_backlink != NULL | |
1022 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1023 | return 1; | |
1024 | ||
1025 | return 0; | |
1026 | } | |
c5aa993b | 1027 | |
2097ae25 DE |
1028 | /* See symtab.h. */ |
1029 | ||
1030 | void | |
1031 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1032 | { |
52f0bd74 | 1033 | struct objfile *objfile; |
77e371c0 | 1034 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1035 | |
1036 | /* If we know that this is not a text address, return failure. This is | |
1037 | necessary because we loop based on texthigh and textlow, which do | |
1038 | not include the data ranges. */ | |
77e371c0 TT |
1039 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1040 | if (msymbol.minsym | |
1041 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
1042 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
1043 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
1044 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
1045 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
2097ae25 | 1046 | return; |
c906108c | 1047 | |
ff013f42 | 1048 | ALL_OBJFILES (objfile) |
ccefe4c4 | 1049 | { |
43f3e411 | 1050 | struct compunit_symtab *cust = NULL; |
433759f7 | 1051 | |
ccefe4c4 | 1052 | if (objfile->sf) |
43f3e411 DE |
1053 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, |
1054 | pc, section, 0); | |
1055 | if (cust) | |
2097ae25 | 1056 | return; |
ccefe4c4 | 1057 | } |
c906108c | 1058 | } |
c906108c | 1059 | \f |
f57d2163 DE |
1060 | /* Hash function for the symbol cache. */ |
1061 | ||
1062 | static unsigned int | |
1063 | hash_symbol_entry (const struct objfile *objfile_context, | |
1064 | const char *name, domain_enum domain) | |
1065 | { | |
1066 | unsigned int hash = (uintptr_t) objfile_context; | |
1067 | ||
1068 | if (name != NULL) | |
1069 | hash += htab_hash_string (name); | |
1070 | ||
2c26b84f DE |
1071 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1072 | to map to the same slot. */ | |
1073 | if (domain == STRUCT_DOMAIN) | |
1074 | hash += VAR_DOMAIN * 7; | |
1075 | else | |
1076 | hash += domain * 7; | |
f57d2163 DE |
1077 | |
1078 | return hash; | |
1079 | } | |
1080 | ||
1081 | /* Equality function for the symbol cache. */ | |
1082 | ||
1083 | static int | |
1084 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1085 | const struct objfile *objfile_context, | |
1086 | const char *name, domain_enum domain) | |
1087 | { | |
1088 | const char *slot_name; | |
1089 | domain_enum slot_domain; | |
1090 | ||
1091 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1092 | return 0; | |
1093 | ||
1094 | if (slot->objfile_context != objfile_context) | |
1095 | return 0; | |
1096 | ||
1097 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1098 | { | |
1099 | slot_name = slot->value.not_found.name; | |
1100 | slot_domain = slot->value.not_found.domain; | |
1101 | } | |
1102 | else | |
1103 | { | |
d12307c1 PMR |
1104 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1105 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1106 | } |
1107 | ||
1108 | /* NULL names match. */ | |
1109 | if (slot_name == NULL && name == NULL) | |
1110 | { | |
1111 | /* But there's no point in calling symbol_matches_domain in the | |
1112 | SYMBOL_SLOT_FOUND case. */ | |
1113 | if (slot_domain != domain) | |
1114 | return 0; | |
1115 | } | |
1116 | else if (slot_name != NULL && name != NULL) | |
1117 | { | |
b5ec771e PA |
1118 | /* It's important that we use the same comparison that was done |
1119 | the first time through. If the slot records a found symbol, | |
1120 | then this means using the symbol name comparison function of | |
1121 | the symbol's language with SYMBOL_SEARCH_NAME. See | |
1122 | dictionary.c. It also means using symbol_matches_domain for | |
1123 | found symbols. See block.c. | |
f57d2163 DE |
1124 | |
1125 | If the slot records a not-found symbol, then require a precise match. | |
1126 | We could still be lax with whitespace like strcmp_iw though. */ | |
1127 | ||
1128 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1129 | { | |
1130 | if (strcmp (slot_name, name) != 0) | |
1131 | return 0; | |
1132 | if (slot_domain != domain) | |
1133 | return 0; | |
1134 | } | |
1135 | else | |
1136 | { | |
d12307c1 | 1137 | struct symbol *sym = slot->value.found.symbol; |
b5ec771e | 1138 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
f57d2163 | 1139 | |
b5ec771e | 1140 | if (!SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) |
f57d2163 | 1141 | return 0; |
b5ec771e | 1142 | |
f57d2163 DE |
1143 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1144 | slot_domain, domain)) | |
1145 | return 0; | |
1146 | } | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | /* Only one name is NULL. */ | |
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | return 1; | |
1155 | } | |
1156 | ||
1157 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1158 | length array) in bytes. */ | |
1159 | ||
1160 | static size_t | |
1161 | symbol_cache_byte_size (unsigned int size) | |
1162 | { | |
1163 | return (sizeof (struct block_symbol_cache) | |
1164 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1165 | } | |
1166 | ||
1167 | /* Resize CACHE. */ | |
1168 | ||
1169 | static void | |
1170 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1171 | { | |
1172 | /* If there's no change in size, don't do anything. | |
1173 | All caches have the same size, so we can just compare with the size | |
1174 | of the global symbols cache. */ | |
1175 | if ((cache->global_symbols != NULL | |
1176 | && cache->global_symbols->size == new_size) | |
1177 | || (cache->global_symbols == NULL | |
1178 | && new_size == 0)) | |
1179 | return; | |
1180 | ||
1181 | xfree (cache->global_symbols); | |
1182 | xfree (cache->static_symbols); | |
1183 | ||
1184 | if (new_size == 0) | |
1185 | { | |
1186 | cache->global_symbols = NULL; | |
1187 | cache->static_symbols = NULL; | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | size_t total_size = symbol_cache_byte_size (new_size); | |
1192 | ||
224c3ddb SM |
1193 | cache->global_symbols |
1194 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1195 | cache->static_symbols | |
1196 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1197 | cache->global_symbols->size = new_size; |
1198 | cache->static_symbols->size = new_size; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | /* Make a symbol cache of size SIZE. */ | |
1203 | ||
1204 | static struct symbol_cache * | |
1205 | make_symbol_cache (unsigned int size) | |
1206 | { | |
1207 | struct symbol_cache *cache; | |
1208 | ||
1209 | cache = XCNEW (struct symbol_cache); | |
1210 | resize_symbol_cache (cache, symbol_cache_size); | |
1211 | return cache; | |
1212 | } | |
1213 | ||
1214 | /* Free the space used by CACHE. */ | |
1215 | ||
1216 | static void | |
1217 | free_symbol_cache (struct symbol_cache *cache) | |
1218 | { | |
1219 | xfree (cache->global_symbols); | |
1220 | xfree (cache->static_symbols); | |
1221 | xfree (cache); | |
1222 | } | |
1223 | ||
1224 | /* Return the symbol cache of PSPACE. | |
1225 | Create one if it doesn't exist yet. */ | |
1226 | ||
1227 | static struct symbol_cache * | |
1228 | get_symbol_cache (struct program_space *pspace) | |
1229 | { | |
19ba03f4 SM |
1230 | struct symbol_cache *cache |
1231 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1232 | |
1233 | if (cache == NULL) | |
1234 | { | |
1235 | cache = make_symbol_cache (symbol_cache_size); | |
1236 | set_program_space_data (pspace, symbol_cache_key, cache); | |
1237 | } | |
1238 | ||
1239 | return cache; | |
1240 | } | |
1241 | ||
1242 | /* Delete the symbol cache of PSPACE. | |
1243 | Called when PSPACE is destroyed. */ | |
1244 | ||
1245 | static void | |
1246 | symbol_cache_cleanup (struct program_space *pspace, void *data) | |
1247 | { | |
19ba03f4 | 1248 | struct symbol_cache *cache = (struct symbol_cache *) data; |
f57d2163 DE |
1249 | |
1250 | free_symbol_cache (cache); | |
1251 | } | |
1252 | ||
1253 | /* Set the size of the symbol cache in all program spaces. */ | |
1254 | ||
1255 | static void | |
1256 | set_symbol_cache_size (unsigned int new_size) | |
1257 | { | |
1258 | struct program_space *pspace; | |
1259 | ||
1260 | ALL_PSPACES (pspace) | |
1261 | { | |
1262 | struct symbol_cache *cache | |
19ba03f4 | 1263 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); |
f57d2163 DE |
1264 | |
1265 | /* The pspace could have been created but not have a cache yet. */ | |
1266 | if (cache != NULL) | |
1267 | resize_symbol_cache (cache, new_size); | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | /* Called when symbol-cache-size is set. */ | |
1272 | ||
1273 | static void | |
eb4c3f4a | 1274 | set_symbol_cache_size_handler (const char *args, int from_tty, |
f57d2163 DE |
1275 | struct cmd_list_element *c) |
1276 | { | |
1277 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1278 | { | |
1279 | /* Restore the previous value. | |
1280 | This is the value the "show" command prints. */ | |
1281 | new_symbol_cache_size = symbol_cache_size; | |
1282 | ||
1283 | error (_("Symbol cache size is too large, max is %u."), | |
1284 | MAX_SYMBOL_CACHE_SIZE); | |
1285 | } | |
1286 | symbol_cache_size = new_symbol_cache_size; | |
1287 | ||
1288 | set_symbol_cache_size (symbol_cache_size); | |
1289 | } | |
1290 | ||
1291 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1292 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1293 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1294 | failed (and thus this one will too), or NULL if the symbol is not present | |
1295 | in the cache. | |
2c26b84f DE |
1296 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1297 | set to the cache and slot of the symbol to save the result of a full lookup | |
1298 | attempt. */ | |
f57d2163 | 1299 | |
d12307c1 | 1300 | static struct block_symbol |
f57d2163 DE |
1301 | symbol_cache_lookup (struct symbol_cache *cache, |
1302 | struct objfile *objfile_context, int block, | |
1303 | const char *name, domain_enum domain, | |
1304 | struct block_symbol_cache **bsc_ptr, | |
1305 | struct symbol_cache_slot **slot_ptr) | |
1306 | { | |
1307 | struct block_symbol_cache *bsc; | |
1308 | unsigned int hash; | |
1309 | struct symbol_cache_slot *slot; | |
1310 | ||
1311 | if (block == GLOBAL_BLOCK) | |
1312 | bsc = cache->global_symbols; | |
1313 | else | |
1314 | bsc = cache->static_symbols; | |
1315 | if (bsc == NULL) | |
1316 | { | |
1317 | *bsc_ptr = NULL; | |
1318 | *slot_ptr = NULL; | |
d12307c1 | 1319 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1320 | } |
1321 | ||
1322 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1323 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1324 | |
1325 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1326 | { | |
1327 | if (symbol_lookup_debug) | |
1328 | fprintf_unfiltered (gdb_stdlog, | |
1329 | "%s block symbol cache hit%s for %s, %s\n", | |
1330 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1331 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1332 | ? " (not found)" : "", | |
1333 | name, domain_name (domain)); | |
1334 | ++bsc->hits; | |
1335 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1336 | return SYMBOL_LOOKUP_FAILED; | |
1337 | return slot->value.found; | |
1338 | } | |
1339 | ||
2c26b84f DE |
1340 | /* Symbol is not present in the cache. */ |
1341 | ||
1342 | *bsc_ptr = bsc; | |
1343 | *slot_ptr = slot; | |
1344 | ||
f57d2163 DE |
1345 | if (symbol_lookup_debug) |
1346 | { | |
1347 | fprintf_unfiltered (gdb_stdlog, | |
1348 | "%s block symbol cache miss for %s, %s\n", | |
1349 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1350 | name, domain_name (domain)); | |
1351 | } | |
1352 | ++bsc->misses; | |
d12307c1 | 1353 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1354 | } |
1355 | ||
1356 | /* Clear out SLOT. */ | |
1357 | ||
1358 | static void | |
1359 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1360 | { | |
1361 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1362 | xfree (slot->value.not_found.name); | |
1363 | slot->state = SYMBOL_SLOT_UNUSED; | |
1364 | } | |
1365 | ||
1366 | /* Mark SYMBOL as found in SLOT. | |
1367 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1368 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1369 | necessarily the objfile the symbol was found in. */ | |
1370 | ||
1371 | static void | |
1372 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1373 | struct symbol_cache_slot *slot, | |
1374 | struct objfile *objfile_context, | |
d12307c1 PMR |
1375 | struct symbol *symbol, |
1376 | const struct block *block) | |
f57d2163 DE |
1377 | { |
1378 | if (bsc == NULL) | |
1379 | return; | |
1380 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1381 | { | |
1382 | ++bsc->collisions; | |
1383 | symbol_cache_clear_slot (slot); | |
1384 | } | |
1385 | slot->state = SYMBOL_SLOT_FOUND; | |
1386 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1387 | slot->value.found.symbol = symbol; |
1388 | slot->value.found.block = block; | |
f57d2163 DE |
1389 | } |
1390 | ||
1391 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1392 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1393 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1394 | ||
1395 | static void | |
1396 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1397 | struct symbol_cache_slot *slot, | |
1398 | struct objfile *objfile_context, | |
1399 | const char *name, domain_enum domain) | |
1400 | { | |
1401 | if (bsc == NULL) | |
1402 | return; | |
1403 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1404 | { | |
1405 | ++bsc->collisions; | |
1406 | symbol_cache_clear_slot (slot); | |
1407 | } | |
1408 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1409 | slot->objfile_context = objfile_context; | |
1410 | slot->value.not_found.name = xstrdup (name); | |
1411 | slot->value.not_found.domain = domain; | |
1412 | } | |
1413 | ||
1414 | /* Flush the symbol cache of PSPACE. */ | |
1415 | ||
1416 | static void | |
1417 | symbol_cache_flush (struct program_space *pspace) | |
1418 | { | |
19ba03f4 SM |
1419 | struct symbol_cache *cache |
1420 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 | 1421 | int pass; |
f57d2163 DE |
1422 | |
1423 | if (cache == NULL) | |
1424 | return; | |
1425 | if (cache->global_symbols == NULL) | |
1426 | { | |
1427 | gdb_assert (symbol_cache_size == 0); | |
1428 | gdb_assert (cache->static_symbols == NULL); | |
1429 | return; | |
1430 | } | |
1431 | ||
1432 | /* If the cache is untouched since the last flush, early exit. | |
1433 | This is important for performance during the startup of a program linked | |
1434 | with 100s (or 1000s) of shared libraries. */ | |
1435 | if (cache->global_symbols->misses == 0 | |
1436 | && cache->static_symbols->misses == 0) | |
1437 | return; | |
1438 | ||
1439 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1440 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1441 | ||
1442 | for (pass = 0; pass < 2; ++pass) | |
1443 | { | |
1444 | struct block_symbol_cache *bsc | |
1445 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1446 | unsigned int i; | |
1447 | ||
1448 | for (i = 0; i < bsc->size; ++i) | |
1449 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1450 | } | |
1451 | ||
1452 | cache->global_symbols->hits = 0; | |
1453 | cache->global_symbols->misses = 0; | |
1454 | cache->global_symbols->collisions = 0; | |
1455 | cache->static_symbols->hits = 0; | |
1456 | cache->static_symbols->misses = 0; | |
1457 | cache->static_symbols->collisions = 0; | |
1458 | } | |
1459 | ||
1460 | /* Dump CACHE. */ | |
1461 | ||
1462 | static void | |
1463 | symbol_cache_dump (const struct symbol_cache *cache) | |
1464 | { | |
1465 | int pass; | |
1466 | ||
1467 | if (cache->global_symbols == NULL) | |
1468 | { | |
1469 | printf_filtered (" <disabled>\n"); | |
1470 | return; | |
1471 | } | |
1472 | ||
1473 | for (pass = 0; pass < 2; ++pass) | |
1474 | { | |
1475 | const struct block_symbol_cache *bsc | |
1476 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1477 | unsigned int i; | |
1478 | ||
1479 | if (pass == 0) | |
1480 | printf_filtered ("Global symbols:\n"); | |
1481 | else | |
1482 | printf_filtered ("Static symbols:\n"); | |
1483 | ||
1484 | for (i = 0; i < bsc->size; ++i) | |
1485 | { | |
1486 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1487 | ||
1488 | QUIT; | |
1489 | ||
1490 | switch (slot->state) | |
1491 | { | |
1492 | case SYMBOL_SLOT_UNUSED: | |
1493 | break; | |
1494 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1495 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1496 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1497 | slot->value.not_found.name, |
1498 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1499 | break; |
1500 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1501 | { |
1502 | struct symbol *found = slot->value.found.symbol; | |
1503 | const struct objfile *context = slot->objfile_context; | |
1504 | ||
1505 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1506 | host_address_to_string (context), | |
1507 | SYMBOL_PRINT_NAME (found), | |
1508 | domain_name (SYMBOL_DOMAIN (found))); | |
1509 | break; | |
1510 | } | |
f57d2163 DE |
1511 | } |
1512 | } | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | /* The "mt print symbol-cache" command. */ | |
1517 | ||
1518 | static void | |
510e5e56 | 1519 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1520 | { |
1521 | struct program_space *pspace; | |
1522 | ||
1523 | ALL_PSPACES (pspace) | |
1524 | { | |
1525 | struct symbol_cache *cache; | |
1526 | ||
1527 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1528 | pspace->num, | |
1529 | pspace->symfile_object_file != NULL | |
1530 | ? objfile_name (pspace->symfile_object_file) | |
1531 | : "(no object file)"); | |
1532 | ||
1533 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1534 | cache |
1535 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1536 | if (cache == NULL) |
1537 | printf_filtered (" <empty>\n"); | |
1538 | else | |
1539 | symbol_cache_dump (cache); | |
1540 | } | |
1541 | } | |
1542 | ||
1543 | /* The "mt flush-symbol-cache" command. */ | |
1544 | ||
1545 | static void | |
510e5e56 | 1546 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1547 | { |
1548 | struct program_space *pspace; | |
1549 | ||
1550 | ALL_PSPACES (pspace) | |
1551 | { | |
1552 | symbol_cache_flush (pspace); | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | /* Print usage statistics of CACHE. */ | |
1557 | ||
1558 | static void | |
1559 | symbol_cache_stats (struct symbol_cache *cache) | |
1560 | { | |
1561 | int pass; | |
1562 | ||
1563 | if (cache->global_symbols == NULL) | |
1564 | { | |
1565 | printf_filtered (" <disabled>\n"); | |
1566 | return; | |
1567 | } | |
1568 | ||
1569 | for (pass = 0; pass < 2; ++pass) | |
1570 | { | |
1571 | const struct block_symbol_cache *bsc | |
1572 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1573 | ||
1574 | QUIT; | |
1575 | ||
1576 | if (pass == 0) | |
1577 | printf_filtered ("Global block cache stats:\n"); | |
1578 | else | |
1579 | printf_filtered ("Static block cache stats:\n"); | |
1580 | ||
1581 | printf_filtered (" size: %u\n", bsc->size); | |
1582 | printf_filtered (" hits: %u\n", bsc->hits); | |
1583 | printf_filtered (" misses: %u\n", bsc->misses); | |
1584 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1585 | } | |
1586 | } | |
1587 | ||
1588 | /* The "mt print symbol-cache-statistics" command. */ | |
1589 | ||
1590 | static void | |
510e5e56 | 1591 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1592 | { |
1593 | struct program_space *pspace; | |
1594 | ||
1595 | ALL_PSPACES (pspace) | |
1596 | { | |
1597 | struct symbol_cache *cache; | |
1598 | ||
1599 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1600 | pspace->num, | |
1601 | pspace->symfile_object_file != NULL | |
1602 | ? objfile_name (pspace->symfile_object_file) | |
1603 | : "(no object file)"); | |
1604 | ||
1605 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1606 | cache |
1607 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1608 | if (cache == NULL) |
1609 | printf_filtered (" empty, no stats available\n"); | |
1610 | else | |
1611 | symbol_cache_stats (cache); | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | /* This module's 'new_objfile' observer. */ | |
1616 | ||
1617 | static void | |
1618 | symtab_new_objfile_observer (struct objfile *objfile) | |
1619 | { | |
1620 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1621 | symbol_cache_flush (current_program_space); | |
1622 | } | |
1623 | ||
1624 | /* This module's 'free_objfile' observer. */ | |
1625 | ||
1626 | static void | |
1627 | symtab_free_objfile_observer (struct objfile *objfile) | |
1628 | { | |
1629 | symbol_cache_flush (objfile->pspace); | |
1630 | } | |
1631 | \f | |
c906108c SS |
1632 | /* Debug symbols usually don't have section information. We need to dig that |
1633 | out of the minimal symbols and stash that in the debug symbol. */ | |
1634 | ||
ccefe4c4 | 1635 | void |
907fc202 UW |
1636 | fixup_section (struct general_symbol_info *ginfo, |
1637 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1638 | { |
1639 | struct minimal_symbol *msym; | |
c906108c | 1640 | |
bccdca4a UW |
1641 | /* First, check whether a minimal symbol with the same name exists |
1642 | and points to the same address. The address check is required | |
1643 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1644 | point to the function descriptor, while the debug symbol will | |
1645 | point to the actual function code. */ | |
907fc202 UW |
1646 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1647 | if (msym) | |
efd66ac6 | 1648 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1649 | else |
19e2d14b KB |
1650 | { |
1651 | /* Static, function-local variables do appear in the linker | |
1652 | (minimal) symbols, but are frequently given names that won't | |
1653 | be found via lookup_minimal_symbol(). E.g., it has been | |
1654 | observed in frv-uclinux (ELF) executables that a static, | |
1655 | function-local variable named "foo" might appear in the | |
1656 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1657 | point in attempting to extend the lookup-by-name mechanism to | |
1658 | handle this case due to the fact that there can be multiple | |
1659 | names. | |
9af17804 | 1660 | |
19e2d14b KB |
1661 | So, instead, search the section table when lookup by name has |
1662 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1663 | been relocated. If so, the relocation offset (i.e. the | |
1664 | ANOFFSET value) needs to be subtracted from these values when | |
1665 | performing the comparison. We unconditionally subtract it, | |
1666 | because, when no relocation has been performed, the ANOFFSET | |
1667 | value will simply be zero. | |
9af17804 | 1668 | |
19e2d14b KB |
1669 | The address of the symbol whose section we're fixing up HAS |
1670 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1671 | the section isn't yet known and knowing the section is | |
1672 | necessary in order to add the correct relocation value. In | |
1673 | other words, we wouldn't even be in this function (attempting | |
1674 | to compute the section) if it were already known. | |
1675 | ||
1676 | Note that it is possible to search the minimal symbols | |
1677 | (subtracting the relocation value if necessary) to find the | |
1678 | matching minimal symbol, but this is overkill and much less | |
1679 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1680 | symbol, only its section. |
1681 | ||
19e2d14b KB |
1682 | Note that this technique (of doing a section table search) |
1683 | can fail when unrelocated section addresses overlap. For | |
1684 | this reason, we still attempt a lookup by name prior to doing | |
1685 | a search of the section table. */ | |
9af17804 | 1686 | |
19e2d14b | 1687 | struct obj_section *s; |
e27d198c | 1688 | int fallback = -1; |
433759f7 | 1689 | |
19e2d14b KB |
1690 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1691 | { | |
65cf3563 | 1692 | int idx = s - objfile->sections; |
19e2d14b KB |
1693 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1694 | ||
e27d198c TT |
1695 | if (fallback == -1) |
1696 | fallback = idx; | |
1697 | ||
f1f6aadf PA |
1698 | if (obj_section_addr (s) - offset <= addr |
1699 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1700 | { |
19e2d14b KB |
1701 | ginfo->section = idx; |
1702 | return; | |
1703 | } | |
1704 | } | |
e27d198c TT |
1705 | |
1706 | /* If we didn't find the section, assume it is in the first | |
1707 | section. If there is no allocated section, then it hardly | |
1708 | matters what we pick, so just pick zero. */ | |
1709 | if (fallback == -1) | |
1710 | ginfo->section = 0; | |
1711 | else | |
1712 | ginfo->section = fallback; | |
19e2d14b | 1713 | } |
c906108c SS |
1714 | } |
1715 | ||
1716 | struct symbol * | |
fba45db2 | 1717 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1718 | { |
907fc202 UW |
1719 | CORE_ADDR addr; |
1720 | ||
c906108c SS |
1721 | if (!sym) |
1722 | return NULL; | |
1723 | ||
1994afbf DE |
1724 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1725 | return sym; | |
1726 | ||
907fc202 UW |
1727 | /* We either have an OBJFILE, or we can get at it from the sym's |
1728 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1729 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1730 | |
1731 | if (objfile == NULL) | |
08be3fe3 | 1732 | objfile = symbol_objfile (sym); |
907fc202 | 1733 | |
e27d198c TT |
1734 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1735 | return sym; | |
1736 | ||
907fc202 UW |
1737 | /* We should have an objfile by now. */ |
1738 | gdb_assert (objfile); | |
1739 | ||
1740 | switch (SYMBOL_CLASS (sym)) | |
1741 | { | |
1742 | case LOC_STATIC: | |
1743 | case LOC_LABEL: | |
907fc202 UW |
1744 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1745 | break; | |
1746 | case LOC_BLOCK: | |
1747 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1748 | break; | |
1749 | ||
1750 | default: | |
1751 | /* Nothing else will be listed in the minsyms -- no use looking | |
1752 | it up. */ | |
1753 | return sym; | |
1754 | } | |
1755 | ||
1756 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1757 | |
1758 | return sym; | |
1759 | } | |
1760 | ||
b5ec771e PA |
1761 | /* See symtab.h. */ |
1762 | ||
1763 | demangle_for_lookup_info::demangle_for_lookup_info | |
1764 | (const lookup_name_info &lookup_name, language lang) | |
1765 | { | |
1766 | demangle_result_storage storage; | |
1767 | ||
c62446b1 PA |
1768 | if (lookup_name.ignore_parameters () && lang == language_cplus) |
1769 | { | |
1770 | gdb::unique_xmalloc_ptr<char> without_params | |
1771 | = cp_remove_params_if_any (lookup_name.name ().c_str (), | |
1772 | lookup_name.completion_mode ()); | |
1773 | ||
1774 | if (without_params != NULL) | |
1775 | { | |
1776 | m_demangled_name = demangle_for_lookup (without_params.get (), | |
1777 | lang, storage); | |
1778 | return; | |
1779 | } | |
1780 | } | |
1781 | ||
b5ec771e PA |
1782 | m_demangled_name = demangle_for_lookup (lookup_name.name ().c_str (), |
1783 | lang, storage); | |
1784 | } | |
1785 | ||
1786 | /* See symtab.h. */ | |
1787 | ||
1788 | const lookup_name_info & | |
1789 | lookup_name_info::match_any () | |
1790 | { | |
1791 | /* Lookup any symbol that "" would complete. I.e., this matches all | |
1792 | symbol names. */ | |
1793 | static const lookup_name_info lookup_name ({}, symbol_name_match_type::FULL, | |
1794 | true); | |
1795 | ||
1796 | return lookup_name; | |
1797 | } | |
1798 | ||
f8eba3c6 | 1799 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1800 | lookup functions. The result can either be the input NAME |
1801 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1802 | |
2f408ecb | 1803 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1804 | Normally, Ada symbol lookups are performed using the encoded name |
1805 | rather than the demangled name, and so it might seem to make sense | |
1806 | for this function to return an encoded version of NAME. | |
1807 | Unfortunately, we cannot do this, because this function is used in | |
1808 | circumstances where it is not appropriate to try to encode NAME. | |
1809 | For instance, when displaying the frame info, we demangle the name | |
1810 | of each parameter, and then perform a symbol lookup inside our | |
1811 | function using that demangled name. In Ada, certain functions | |
1812 | have internally-generated parameters whose name contain uppercase | |
1813 | characters. Encoding those name would result in those uppercase | |
1814 | characters to become lowercase, and thus cause the symbol lookup | |
1815 | to fail. */ | |
c906108c | 1816 | |
2f408ecb | 1817 | const char * |
f8eba3c6 | 1818 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1819 | demangle_result_storage &storage) |
c906108c | 1820 | { |
9c37b5ae | 1821 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1822 | lookup, so we can always binary search. */ |
53c5240f | 1823 | if (lang == language_cplus) |
729051e6 | 1824 | { |
2f408ecb PA |
1825 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1826 | if (demangled_name != NULL) | |
1827 | return storage.set_malloc_ptr (demangled_name); | |
1828 | ||
1829 | /* If we were given a non-mangled name, canonicalize it | |
1830 | according to the language (so far only for C++). */ | |
1831 | std::string canon = cp_canonicalize_string (name); | |
1832 | if (!canon.empty ()) | |
1833 | return storage.swap_string (canon); | |
729051e6 | 1834 | } |
6aecb9c2 JB |
1835 | else if (lang == language_d) |
1836 | { | |
2f408ecb PA |
1837 | char *demangled_name = d_demangle (name, 0); |
1838 | if (demangled_name != NULL) | |
1839 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1840 | } |
a766d390 DE |
1841 | else if (lang == language_go) |
1842 | { | |
2f408ecb PA |
1843 | char *demangled_name = go_demangle (name, 0); |
1844 | if (demangled_name != NULL) | |
1845 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1846 | } |
729051e6 | 1847 | |
2f408ecb | 1848 | return name; |
f8eba3c6 TT |
1849 | } |
1850 | ||
5ffa0793 PA |
1851 | /* See symtab.h. */ |
1852 | ||
1853 | unsigned int | |
1854 | search_name_hash (enum language language, const char *search_name) | |
1855 | { | |
1856 | return language_def (language)->la_search_name_hash (search_name); | |
1857 | } | |
1858 | ||
cf901d3b | 1859 | /* See symtab.h. |
f8eba3c6 | 1860 | |
cf901d3b | 1861 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1862 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1863 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1864 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1865 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1866 | that there is C++ code below which can error(), but that probably |
1867 | doesn't affect these calls since they are looking for a known | |
1868 | variable and thus can probably assume it will never hit the C++ | |
1869 | code). */ | |
1870 | ||
d12307c1 | 1871 | struct block_symbol |
f8eba3c6 TT |
1872 | lookup_symbol_in_language (const char *name, const struct block *block, |
1873 | const domain_enum domain, enum language lang, | |
1993b719 | 1874 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1875 | { |
2f408ecb PA |
1876 | demangle_result_storage storage; |
1877 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1878 | |
2f408ecb PA |
1879 | return lookup_symbol_aux (modified_name, block, domain, lang, |
1880 | is_a_field_of_this); | |
fba7f19c EZ |
1881 | } |
1882 | ||
cf901d3b | 1883 | /* See symtab.h. */ |
53c5240f | 1884 | |
d12307c1 | 1885 | struct block_symbol |
53c5240f | 1886 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1887 | domain_enum domain, |
1888 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1889 | { |
1890 | return lookup_symbol_in_language (name, block, domain, | |
1891 | current_language->la_language, | |
2570f2b7 | 1892 | is_a_field_of_this); |
53c5240f PA |
1893 | } |
1894 | ||
cf901d3b | 1895 | /* See symtab.h. */ |
66a17cb6 | 1896 | |
d12307c1 | 1897 | struct block_symbol |
66a17cb6 TT |
1898 | lookup_language_this (const struct language_defn *lang, |
1899 | const struct block *block) | |
1900 | { | |
1901 | if (lang->la_name_of_this == NULL || block == NULL) | |
d12307c1 | 1902 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 | 1903 | |
cc485e62 DE |
1904 | if (symbol_lookup_debug > 1) |
1905 | { | |
1906 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1907 | ||
1908 | fprintf_unfiltered (gdb_stdlog, | |
1909 | "lookup_language_this (%s, %s (objfile %s))", | |
1910 | lang->la_name, host_address_to_string (block), | |
1911 | objfile_debug_name (objfile)); | |
1912 | } | |
1913 | ||
03de6823 | 1914 | while (block) |
66a17cb6 TT |
1915 | { |
1916 | struct symbol *sym; | |
1917 | ||
16b2eaa1 | 1918 | sym = block_lookup_symbol (block, lang->la_name_of_this, VAR_DOMAIN); |
66a17cb6 | 1919 | if (sym != NULL) |
f149aabd | 1920 | { |
cc485e62 DE |
1921 | if (symbol_lookup_debug > 1) |
1922 | { | |
1923 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1924 | SYMBOL_PRINT_NAME (sym), | |
1925 | host_address_to_string (sym), | |
1926 | host_address_to_string (block)); | |
1927 | } | |
d12307c1 | 1928 | return (struct block_symbol) {sym, block}; |
f149aabd | 1929 | } |
66a17cb6 | 1930 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1931 | break; |
66a17cb6 TT |
1932 | block = BLOCK_SUPERBLOCK (block); |
1933 | } | |
03de6823 | 1934 | |
cc485e62 DE |
1935 | if (symbol_lookup_debug > 1) |
1936 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 1937 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 TT |
1938 | } |
1939 | ||
2dc3df72 TT |
1940 | /* Given TYPE, a structure/union, |
1941 | return 1 if the component named NAME from the ultimate target | |
1942 | structure/union is defined, otherwise, return 0. */ | |
1943 | ||
1944 | static int | |
1993b719 TT |
1945 | check_field (struct type *type, const char *name, |
1946 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1947 | { |
1948 | int i; | |
1949 | ||
1950 | /* The type may be a stub. */ | |
f168693b | 1951 | type = check_typedef (type); |
2dc3df72 TT |
1952 | |
1953 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1954 | { | |
1955 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1956 | ||
1957 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1958 | { |
1959 | is_a_field_of_this->type = type; | |
1960 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1961 | return 1; | |
1962 | } | |
2dc3df72 TT |
1963 | } |
1964 | ||
1965 | /* C++: If it was not found as a data field, then try to return it | |
1966 | as a pointer to a method. */ | |
1967 | ||
1968 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1969 | { | |
1970 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1971 | { |
1972 | is_a_field_of_this->type = type; | |
1973 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1974 | return 1; | |
1975 | } | |
2dc3df72 TT |
1976 | } |
1977 | ||
1978 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1979 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1980 | return 1; |
1981 | ||
1982 | return 0; | |
1983 | } | |
1984 | ||
53c5240f | 1985 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 1986 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 1987 | |
d12307c1 | 1988 | static struct block_symbol |
94af9270 KS |
1989 | lookup_symbol_aux (const char *name, const struct block *block, |
1990 | const domain_enum domain, enum language language, | |
1993b719 | 1991 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 1992 | { |
d12307c1 | 1993 | struct block_symbol result; |
53c5240f | 1994 | const struct language_defn *langdef; |
406bc4de | 1995 | |
cc485e62 DE |
1996 | if (symbol_lookup_debug) |
1997 | { | |
1998 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1999 | ||
2000 | fprintf_unfiltered (gdb_stdlog, | |
2001 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
2002 | name, host_address_to_string (block), | |
2003 | objfile != NULL | |
2004 | ? objfile_debug_name (objfile) : "NULL", | |
2005 | domain_name (domain), language_str (language)); | |
2006 | } | |
2007 | ||
9a146a11 EZ |
2008 | /* Make sure we do something sensible with is_a_field_of_this, since |
2009 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
2010 | certainly use it later. If we don't set it, the contents of |
2011 | is_a_field_of_this are undefined. */ | |
9a146a11 | 2012 | if (is_a_field_of_this != NULL) |
1993b719 | 2013 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 2014 | |
e4051eeb DC |
2015 | /* Search specified block and its superiors. Don't search |
2016 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 2017 | |
d12307c1 PMR |
2018 | result = lookup_local_symbol (name, block, domain, language); |
2019 | if (result.symbol != NULL) | |
cc485e62 DE |
2020 | { |
2021 | if (symbol_lookup_debug) | |
2022 | { | |
2023 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2024 | host_address_to_string (result.symbol)); |
cc485e62 | 2025 | } |
d12307c1 | 2026 | return result; |
cc485e62 | 2027 | } |
c906108c | 2028 | |
53c5240f | 2029 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 2030 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
2031 | |
2032 | langdef = language_def (language); | |
5f9a71c3 | 2033 | |
6592e36f TT |
2034 | /* Don't do this check if we are searching for a struct. It will |
2035 | not be found by check_field, but will be found by other | |
2036 | means. */ | |
2037 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2038 | { |
d12307c1 | 2039 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2040 | |
d12307c1 | 2041 | if (result.symbol) |
c906108c | 2042 | { |
d12307c1 | 2043 | struct type *t = result.symbol->type; |
9af17804 | 2044 | |
2b2d9e11 VP |
2045 | /* I'm not really sure that type of this can ever |
2046 | be typedefed; just be safe. */ | |
f168693b | 2047 | t = check_typedef (t); |
aa006118 | 2048 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 2049 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 2050 | |
2b2d9e11 VP |
2051 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2052 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2053 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2054 | langdef->la_name_of_this); |
9af17804 | 2055 | |
1993b719 | 2056 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2057 | { |
2058 | if (symbol_lookup_debug) | |
2059 | { | |
2060 | fprintf_unfiltered (gdb_stdlog, | |
2061 | "lookup_symbol_aux (...) = NULL\n"); | |
2062 | } | |
d12307c1 | 2063 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2064 | } |
c906108c SS |
2065 | } |
2066 | } | |
2067 | ||
53c5240f | 2068 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2069 | up static and global variables. */ |
c906108c | 2070 | |
d12307c1 PMR |
2071 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2072 | if (result.symbol != NULL) | |
cc485e62 DE |
2073 | { |
2074 | if (symbol_lookup_debug) | |
2075 | { | |
2076 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2077 | host_address_to_string (result.symbol)); |
cc485e62 | 2078 | } |
d12307c1 | 2079 | return result; |
cc485e62 | 2080 | } |
c906108c | 2081 | |
774b6a14 TT |
2082 | /* Now search all static file-level symbols. Not strictly correct, |
2083 | but more useful than an error. */ | |
41f62f39 | 2084 | |
d12307c1 | 2085 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2086 | if (symbol_lookup_debug) |
2087 | { | |
2088 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2089 | result.symbol != NULL |
2090 | ? host_address_to_string (result.symbol) | |
2091 | : "NULL"); | |
cc485e62 | 2092 | } |
d12307c1 | 2093 | return result; |
41f62f39 JK |
2094 | } |
2095 | ||
e4051eeb | 2096 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2097 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2098 | |
d12307c1 | 2099 | static struct block_symbol |
74016e12 DE |
2100 | lookup_local_symbol (const char *name, const struct block *block, |
2101 | const domain_enum domain, | |
2102 | enum language language) | |
8155455b DC |
2103 | { |
2104 | struct symbol *sym; | |
89a9d1b1 | 2105 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2106 | const char *scope = block_scope (block); |
2107 | ||
e4051eeb DC |
2108 | /* Check if either no block is specified or it's a global block. */ |
2109 | ||
89a9d1b1 | 2110 | if (static_block == NULL) |
d12307c1 | 2111 | return (struct block_symbol) {NULL, NULL}; |
e4051eeb | 2112 | |
89a9d1b1 | 2113 | while (block != static_block) |
f61e8913 | 2114 | { |
d1a2d36d | 2115 | sym = lookup_symbol_in_block (name, block, domain); |
f61e8913 | 2116 | if (sym != NULL) |
d12307c1 | 2117 | return (struct block_symbol) {sym, block}; |
edb3359d | 2118 | |
f55ee35c | 2119 | if (language == language_cplus || language == language_fortran) |
13387711 | 2120 | { |
d12307c1 PMR |
2121 | struct block_symbol sym |
2122 | = cp_lookup_symbol_imports_or_template (scope, name, block, | |
2123 | domain); | |
2124 | ||
2125 | if (sym.symbol != NULL) | |
13387711 SW |
2126 | return sym; |
2127 | } | |
2128 | ||
edb3359d DJ |
2129 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2130 | break; | |
f61e8913 DC |
2131 | block = BLOCK_SUPERBLOCK (block); |
2132 | } | |
2133 | ||
3aee438b | 2134 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2135 | |
d12307c1 | 2136 | return (struct block_symbol) {NULL, NULL}; |
f61e8913 DC |
2137 | } |
2138 | ||
cf901d3b | 2139 | /* See symtab.h. */ |
3a40aaa0 | 2140 | |
c0201579 | 2141 | struct objfile * |
3a40aaa0 UW |
2142 | lookup_objfile_from_block (const struct block *block) |
2143 | { | |
2144 | struct objfile *obj; | |
43f3e411 | 2145 | struct compunit_symtab *cust; |
3a40aaa0 UW |
2146 | |
2147 | if (block == NULL) | |
2148 | return NULL; | |
2149 | ||
2150 | block = block_global_block (block); | |
43f3e411 DE |
2151 | /* Look through all blockvectors. */ |
2152 | ALL_COMPUNITS (obj, cust) | |
2153 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), | |
2154 | GLOBAL_BLOCK)) | |
61f0d762 JK |
2155 | { |
2156 | if (obj->separate_debug_objfile_backlink) | |
2157 | obj = obj->separate_debug_objfile_backlink; | |
2158 | ||
2159 | return obj; | |
2160 | } | |
3a40aaa0 UW |
2161 | |
2162 | return NULL; | |
2163 | } | |
2164 | ||
cf901d3b | 2165 | /* See symtab.h. */ |
f61e8913 | 2166 | |
5f9a71c3 | 2167 | struct symbol * |
d1a2d36d DE |
2168 | lookup_symbol_in_block (const char *name, const struct block *block, |
2169 | const domain_enum domain) | |
f61e8913 DC |
2170 | { |
2171 | struct symbol *sym; | |
f61e8913 | 2172 | |
cc485e62 DE |
2173 | if (symbol_lookup_debug > 1) |
2174 | { | |
2175 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2176 | ||
2177 | fprintf_unfiltered (gdb_stdlog, | |
2178 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2179 | name, host_address_to_string (block), | |
2180 | objfile_debug_name (objfile), | |
2181 | domain_name (domain)); | |
2182 | } | |
2183 | ||
16b2eaa1 | 2184 | sym = block_lookup_symbol (block, name, domain); |
f61e8913 | 2185 | if (sym) |
8155455b | 2186 | { |
cc485e62 DE |
2187 | if (symbol_lookup_debug > 1) |
2188 | { | |
2189 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2190 | host_address_to_string (sym)); | |
2191 | } | |
21b556f4 | 2192 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2193 | } |
2194 | ||
cc485e62 DE |
2195 | if (symbol_lookup_debug > 1) |
2196 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2197 | return NULL; |
2198 | } | |
2199 | ||
cf901d3b | 2200 | /* See symtab.h. */ |
3a40aaa0 | 2201 | |
d12307c1 | 2202 | struct block_symbol |
efad9b6a | 2203 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 2204 | const char *name, |
21b556f4 | 2205 | const domain_enum domain) |
3a40aaa0 | 2206 | { |
efad9b6a | 2207 | struct objfile *objfile; |
3a40aaa0 | 2208 | |
15d123c9 TG |
2209 | for (objfile = main_objfile; |
2210 | objfile; | |
2211 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
2212 | { | |
d12307c1 PMR |
2213 | struct block_symbol result |
2214 | = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain); | |
15d123c9 | 2215 | |
d12307c1 PMR |
2216 | if (result.symbol != NULL) |
2217 | return result; | |
15d123c9 | 2218 | } |
56e3f43c | 2219 | |
d12307c1 | 2220 | return (struct block_symbol) {NULL, NULL}; |
3a40aaa0 UW |
2221 | } |
2222 | ||
19630284 JB |
2223 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2224 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2225 | depending on whether or not we want to search global symbols or |
2226 | static symbols. */ | |
2227 | ||
d12307c1 | 2228 | static struct block_symbol |
74016e12 DE |
2229 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
2230 | const char *name, const domain_enum domain) | |
19630284 | 2231 | { |
43f3e411 | 2232 | struct compunit_symtab *cust; |
19630284 | 2233 | |
ba715d7f JK |
2234 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2235 | ||
cc485e62 DE |
2236 | if (symbol_lookup_debug > 1) |
2237 | { | |
2238 | fprintf_unfiltered (gdb_stdlog, | |
2239 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2240 | objfile_debug_name (objfile), | |
2241 | block_index == GLOBAL_BLOCK | |
2242 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2243 | name, domain_name (domain)); | |
2244 | } | |
2245 | ||
43f3e411 | 2246 | ALL_OBJFILE_COMPUNITS (objfile, cust) |
a743abeb | 2247 | { |
43f3e411 DE |
2248 | const struct blockvector *bv; |
2249 | const struct block *block; | |
d12307c1 | 2250 | struct block_symbol result; |
43f3e411 DE |
2251 | |
2252 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2253 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2254 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2255 | result.block = block; | |
2256 | if (result.symbol != NULL) | |
a743abeb | 2257 | { |
cc485e62 DE |
2258 | if (symbol_lookup_debug > 1) |
2259 | { | |
2260 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2261 | host_address_to_string (result.symbol), |
cc485e62 DE |
2262 | host_address_to_string (block)); |
2263 | } | |
d12307c1 PMR |
2264 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2265 | return result; | |
2266 | ||
a743abeb DE |
2267 | } |
2268 | } | |
19630284 | 2269 | |
cc485e62 DE |
2270 | if (symbol_lookup_debug > 1) |
2271 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 2272 | return (struct block_symbol) {NULL, NULL}; |
19630284 JB |
2273 | } |
2274 | ||
74016e12 | 2275 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2276 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2277 | and all associated separate debug objfiles. |
2278 | ||
2279 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2280 | because the outer loop will cause them to be searched too. This case is | |
2281 | different. Here we're called from search_symbols where it will only | |
2282 | call us for the the objfile that contains a matching minsym. */ | |
422d65e7 | 2283 | |
d12307c1 | 2284 | static struct block_symbol |
422d65e7 DE |
2285 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2286 | const char *linkage_name, | |
2287 | domain_enum domain) | |
2288 | { | |
2289 | enum language lang = current_language->la_language; | |
422d65e7 DE |
2290 | struct objfile *main_objfile, *cur_objfile; |
2291 | ||
2f408ecb PA |
2292 | demangle_result_storage storage; |
2293 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2294 | ||
422d65e7 DE |
2295 | if (objfile->separate_debug_objfile_backlink) |
2296 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2297 | else | |
2298 | main_objfile = objfile; | |
2299 | ||
2300 | for (cur_objfile = main_objfile; | |
2301 | cur_objfile; | |
2302 | cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile)) | |
2303 | { | |
d12307c1 PMR |
2304 | struct block_symbol result; |
2305 | ||
2306 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2307 | modified_name, domain); | |
2308 | if (result.symbol == NULL) | |
2309 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2310 | modified_name, domain); | |
2311 | if (result.symbol != NULL) | |
2f408ecb | 2312 | return result; |
422d65e7 DE |
2313 | } |
2314 | ||
d12307c1 | 2315 | return (struct block_symbol) {NULL, NULL}; |
422d65e7 DE |
2316 | } |
2317 | ||
08c23b0d TT |
2318 | /* A helper function that throws an exception when a symbol was found |
2319 | in a psymtab but not in a symtab. */ | |
2320 | ||
2321 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 2322 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 2323 | struct compunit_symtab *cust) |
08c23b0d TT |
2324 | { |
2325 | error (_("\ | |
2326 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2327 | %s may be an inlined function, or may be a template function\n \ | |
2328 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2329 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2330 | name, |
2331 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2332 | name, name); | |
08c23b0d TT |
2333 | } |
2334 | ||
74016e12 DE |
2335 | /* A helper function for various lookup routines that interfaces with |
2336 | the "quick" symbol table functions. */ | |
8155455b | 2337 | |
d12307c1 | 2338 | static struct block_symbol |
74016e12 DE |
2339 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
2340 | const char *name, const domain_enum domain) | |
8155455b | 2341 | { |
43f3e411 | 2342 | struct compunit_symtab *cust; |
346d1dfe | 2343 | const struct blockvector *bv; |
8155455b | 2344 | const struct block *block; |
d12307c1 | 2345 | struct block_symbol result; |
8155455b | 2346 | |
ccefe4c4 | 2347 | if (!objfile->sf) |
d12307c1 | 2348 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2349 | |
2350 | if (symbol_lookup_debug > 1) | |
2351 | { | |
2352 | fprintf_unfiltered (gdb_stdlog, | |
2353 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2354 | objfile_debug_name (objfile), | |
2355 | block_index == GLOBAL_BLOCK | |
2356 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2357 | name, domain_name (domain)); | |
2358 | } | |
2359 | ||
43f3e411 DE |
2360 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2361 | if (cust == NULL) | |
cc485e62 DE |
2362 | { |
2363 | if (symbol_lookup_debug > 1) | |
2364 | { | |
2365 | fprintf_unfiltered (gdb_stdlog, | |
2366 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2367 | } | |
d12307c1 | 2368 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2369 | } |
8155455b | 2370 | |
43f3e411 | 2371 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2372 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2373 | result.symbol = block_lookup_symbol (block, name, domain); |
2374 | if (result.symbol == NULL) | |
43f3e411 | 2375 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2376 | |
2377 | if (symbol_lookup_debug > 1) | |
2378 | { | |
2379 | fprintf_unfiltered (gdb_stdlog, | |
2380 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2381 | host_address_to_string (result.symbol), |
cc485e62 DE |
2382 | host_address_to_string (block)); |
2383 | } | |
2384 | ||
d12307c1 PMR |
2385 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2386 | result.block = block; | |
2387 | return result; | |
8155455b DC |
2388 | } |
2389 | ||
cf901d3b | 2390 | /* See symtab.h. */ |
5f9a71c3 | 2391 | |
d12307c1 | 2392 | struct block_symbol |
f606139a DE |
2393 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2394 | const char *name, | |
5f9a71c3 | 2395 | const struct block *block, |
21b556f4 | 2396 | const domain_enum domain) |
5f9a71c3 | 2397 | { |
d12307c1 | 2398 | struct block_symbol result; |
5f9a71c3 DC |
2399 | |
2400 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2401 | this (or what turned into this) was part of lookup_symbol_aux; | |
2402 | I'm much less worried about these questions now, since these | |
2403 | decisions have turned out well, but I leave these comments here | |
2404 | for posterity. */ | |
2405 | ||
2406 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2407 | not it would be appropriate to search the current global block | |
2408 | here as well. (That's what this code used to do before the | |
2409 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2410 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2411 | next. On the other hand, if decode_line_1 is passed an argument |
2412 | like filename:var, then the user presumably wants 'var' to be | |
2413 | searched for in filename. On the third hand, there shouldn't be | |
2414 | multiple global variables all of which are named 'var', and it's | |
2415 | not like decode_line_1 has ever restricted its search to only | |
2416 | global variables in a single filename. All in all, only | |
2417 | searching the static block here seems best: it's correct and it's | |
2418 | cleanest. */ | |
2419 | ||
2420 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2421 | issue here: if you usually search for global symbols in the | |
2422 | current file, then it would be slightly better to search the | |
2423 | current global block before searching all the symtabs. But there | |
2424 | are other factors that have a much greater effect on performance | |
2425 | than that one, so I don't think we should worry about that for | |
2426 | now. */ | |
2427 | ||
d9060ba6 DE |
2428 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2429 | the current objfile. Searching the current objfile first is useful | |
2430 | for both matching user expectations as well as performance. */ | |
2431 | ||
d12307c1 PMR |
2432 | result = lookup_symbol_in_static_block (name, block, domain); |
2433 | if (result.symbol != NULL) | |
2434 | return result; | |
5f9a71c3 | 2435 | |
1994afbf DE |
2436 | /* If we didn't find a definition for a builtin type in the static block, |
2437 | search for it now. This is actually the right thing to do and can be | |
2438 | a massive performance win. E.g., when debugging a program with lots of | |
2439 | shared libraries we could search all of them only to find out the | |
2440 | builtin type isn't defined in any of them. This is common for types | |
2441 | like "void". */ | |
2442 | if (domain == VAR_DOMAIN) | |
2443 | { | |
2444 | struct gdbarch *gdbarch; | |
2445 | ||
2446 | if (block == NULL) | |
2447 | gdbarch = target_gdbarch (); | |
2448 | else | |
2449 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2450 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2451 | gdbarch, name); | |
2452 | result.block = NULL; | |
2453 | if (result.symbol != NULL) | |
2454 | return result; | |
1994afbf DE |
2455 | } |
2456 | ||
08724ab7 | 2457 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2458 | } |
2459 | ||
cf901d3b | 2460 | /* See symtab.h. */ |
5f9a71c3 | 2461 | |
d12307c1 | 2462 | struct block_symbol |
24d864bb DE |
2463 | lookup_symbol_in_static_block (const char *name, |
2464 | const struct block *block, | |
2465 | const domain_enum domain) | |
5f9a71c3 DC |
2466 | { |
2467 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2468 | struct symbol *sym; |
5f9a71c3 | 2469 | |
cc485e62 | 2470 | if (static_block == NULL) |
d12307c1 | 2471 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2472 | |
2473 | if (symbol_lookup_debug) | |
2474 | { | |
2475 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2476 | ||
2477 | fprintf_unfiltered (gdb_stdlog, | |
2478 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2479 | " %s)\n", | |
2480 | name, | |
2481 | host_address_to_string (block), | |
2482 | objfile_debug_name (objfile), | |
2483 | domain_name (domain)); | |
2484 | } | |
2485 | ||
2486 | sym = lookup_symbol_in_block (name, static_block, domain); | |
2487 | if (symbol_lookup_debug) | |
2488 | { | |
2489 | fprintf_unfiltered (gdb_stdlog, | |
2490 | "lookup_symbol_in_static_block (...) = %s\n", | |
2491 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2492 | } | |
d12307c1 | 2493 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2494 | } |
2495 | ||
af3768e9 DE |
2496 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2497 | 1) First search expanded symtabs, and if not found | |
2498 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2499 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2500 | ||
d12307c1 | 2501 | static struct block_symbol |
af3768e9 DE |
2502 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
2503 | const char *name, const domain_enum domain) | |
2504 | { | |
d12307c1 | 2505 | struct block_symbol result; |
af3768e9 | 2506 | |
cc485e62 DE |
2507 | if (symbol_lookup_debug) |
2508 | { | |
2509 | fprintf_unfiltered (gdb_stdlog, | |
2510 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2511 | objfile_debug_name (objfile), | |
2512 | block_index == GLOBAL_BLOCK | |
2513 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2514 | name, domain_name (domain)); | |
2515 | } | |
2516 | ||
af3768e9 DE |
2517 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2518 | name, domain); | |
d12307c1 | 2519 | if (result.symbol != NULL) |
af3768e9 | 2520 | { |
cc485e62 DE |
2521 | if (symbol_lookup_debug) |
2522 | { | |
2523 | fprintf_unfiltered (gdb_stdlog, | |
2524 | "lookup_symbol_in_objfile (...) = %s" | |
2525 | " (in symtabs)\n", | |
d12307c1 | 2526 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2527 | } |
2528 | return result; | |
af3768e9 DE |
2529 | } |
2530 | ||
cc485e62 DE |
2531 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2532 | name, domain); | |
2533 | if (symbol_lookup_debug) | |
2534 | { | |
2535 | fprintf_unfiltered (gdb_stdlog, | |
2536 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2537 | result.symbol != NULL |
2538 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2539 | : "NULL", |
d12307c1 | 2540 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2541 | } |
af3768e9 DE |
2542 | return result; |
2543 | } | |
2544 | ||
2545 | /* See symtab.h. */ | |
2546 | ||
d12307c1 | 2547 | struct block_symbol |
af3768e9 DE |
2548 | lookup_static_symbol (const char *name, const domain_enum domain) |
2549 | { | |
f57d2163 | 2550 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
af3768e9 | 2551 | struct objfile *objfile; |
d12307c1 | 2552 | struct block_symbol result; |
f57d2163 DE |
2553 | struct block_symbol_cache *bsc; |
2554 | struct symbol_cache_slot *slot; | |
2555 | ||
2556 | /* Lookup in STATIC_BLOCK is not current-objfile-dependent, so just pass | |
2557 | NULL for OBJFILE_CONTEXT. */ | |
2558 | result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain, | |
2559 | &bsc, &slot); | |
d12307c1 | 2560 | if (result.symbol != NULL) |
f57d2163 | 2561 | { |
d12307c1 PMR |
2562 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2563 | return (struct block_symbol) {NULL, NULL}; | |
f57d2163 DE |
2564 | return result; |
2565 | } | |
af3768e9 DE |
2566 | |
2567 | ALL_OBJFILES (objfile) | |
2568 | { | |
2569 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
d12307c1 | 2570 | if (result.symbol != NULL) |
f57d2163 DE |
2571 | { |
2572 | /* Still pass NULL for OBJFILE_CONTEXT here. */ | |
d12307c1 PMR |
2573 | symbol_cache_mark_found (bsc, slot, NULL, result.symbol, |
2574 | result.block); | |
f57d2163 DE |
2575 | return result; |
2576 | } | |
af3768e9 DE |
2577 | } |
2578 | ||
f57d2163 DE |
2579 | /* Still pass NULL for OBJFILE_CONTEXT here. */ |
2580 | symbol_cache_mark_not_found (bsc, slot, NULL, name, domain); | |
d12307c1 | 2581 | return (struct block_symbol) {NULL, NULL}; |
af3768e9 DE |
2582 | } |
2583 | ||
19630284 JB |
2584 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2585 | ||
2586 | struct global_sym_lookup_data | |
2587 | { | |
2588 | /* The name of the symbol we are searching for. */ | |
2589 | const char *name; | |
2590 | ||
2591 | /* The domain to use for our search. */ | |
2592 | domain_enum domain; | |
2593 | ||
2594 | /* The field where the callback should store the symbol if found. | |
d12307c1 PMR |
2595 | It should be initialized to {NULL, NULL} before the search is started. */ |
2596 | struct block_symbol result; | |
19630284 JB |
2597 | }; |
2598 | ||
2599 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
2600 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
2601 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
2602 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
2603 | ||
2604 | static int | |
2605 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
2606 | void *cb_data) | |
2607 | { | |
2608 | struct global_sym_lookup_data *data = | |
2609 | (struct global_sym_lookup_data *) cb_data; | |
2610 | ||
d12307c1 PMR |
2611 | gdb_assert (data->result.symbol == NULL |
2612 | && data->result.block == NULL); | |
19630284 | 2613 | |
af3768e9 DE |
2614 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
2615 | data->name, data->domain); | |
19630284 JB |
2616 | |
2617 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2618 | keep going. */ | |
d12307c1 | 2619 | return (data->result.symbol != NULL); |
19630284 JB |
2620 | } |
2621 | ||
cf901d3b | 2622 | /* See symtab.h. */ |
5f9a71c3 | 2623 | |
d12307c1 | 2624 | struct block_symbol |
08724ab7 | 2625 | lookup_global_symbol (const char *name, |
3a40aaa0 | 2626 | const struct block *block, |
21b556f4 | 2627 | const domain_enum domain) |
5f9a71c3 | 2628 | { |
f57d2163 | 2629 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2630 | struct block_symbol result; |
f57d2163 | 2631 | struct objfile *objfile; |
19630284 | 2632 | struct global_sym_lookup_data lookup_data; |
f57d2163 DE |
2633 | struct block_symbol_cache *bsc; |
2634 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2635 | |
6a3ca067 | 2636 | objfile = lookup_objfile_from_block (block); |
f57d2163 DE |
2637 | |
2638 | /* First see if we can find the symbol in the cache. | |
2639 | This works because we use the current objfile to qualify the lookup. */ | |
d12307c1 PMR |
2640 | result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain, |
2641 | &bsc, &slot); | |
2642 | if (result.symbol != NULL) | |
f57d2163 | 2643 | { |
d12307c1 PMR |
2644 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2645 | return (struct block_symbol) {NULL, NULL}; | |
2646 | return result; | |
f57d2163 DE |
2647 | } |
2648 | ||
2649 | /* Call library-specific lookup procedure. */ | |
67ff19f7 | 2650 | if (objfile != NULL) |
d12307c1 | 2651 | result = solib_global_lookup (objfile, name, domain); |
b2fb95e0 | 2652 | |
f57d2163 | 2653 | /* If that didn't work go a global search (of global blocks, heh). */ |
d12307c1 | 2654 | if (result.symbol == NULL) |
f57d2163 DE |
2655 | { |
2656 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2657 | lookup_data.name = name; | |
2658 | lookup_data.domain = domain; | |
2659 | gdbarch_iterate_over_objfiles_in_search_order | |
2660 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
2661 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); | |
d12307c1 | 2662 | result = lookup_data.result; |
f57d2163 | 2663 | } |
6a3ca067 | 2664 | |
d12307c1 PMR |
2665 | if (result.symbol != NULL) |
2666 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2667 | else |
2668 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2669 | ||
d12307c1 | 2670 | return result; |
5f9a71c3 DC |
2671 | } |
2672 | ||
4186eb54 KS |
2673 | int |
2674 | symbol_matches_domain (enum language symbol_language, | |
2675 | domain_enum symbol_domain, | |
2676 | domain_enum domain) | |
2677 | { | |
2678 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2679 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2680 | if (symbol_language == language_cplus | |
2681 | || symbol_language == language_d | |
65547233 TT |
2682 | || symbol_language == language_ada |
2683 | || symbol_language == language_rust) | |
4186eb54 KS |
2684 | { |
2685 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2686 | && symbol_domain == STRUCT_DOMAIN) | |
2687 | return 1; | |
2688 | } | |
2689 | /* For all other languages, strict match is required. */ | |
2690 | return (symbol_domain == domain); | |
2691 | } | |
2692 | ||
cf901d3b | 2693 | /* See symtab.h. */ |
c906108c | 2694 | |
ccefe4c4 TT |
2695 | struct type * |
2696 | lookup_transparent_type (const char *name) | |
c906108c | 2697 | { |
ccefe4c4 TT |
2698 | return current_language->la_lookup_transparent_type (name); |
2699 | } | |
9af17804 | 2700 | |
ccefe4c4 TT |
2701 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2702 | "quick" symbol table functions. */ | |
357e46e7 | 2703 | |
ccefe4c4 | 2704 | static struct type * |
f88cb4b6 | 2705 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2706 | const char *name) |
2707 | { | |
43f3e411 | 2708 | struct compunit_symtab *cust; |
346d1dfe | 2709 | const struct blockvector *bv; |
ccefe4c4 TT |
2710 | struct block *block; |
2711 | struct symbol *sym; | |
c906108c | 2712 | |
ccefe4c4 TT |
2713 | if (!objfile->sf) |
2714 | return NULL; | |
43f3e411 DE |
2715 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2716 | STRUCT_DOMAIN); | |
2717 | if (cust == NULL) | |
ccefe4c4 | 2718 | return NULL; |
c906108c | 2719 | |
43f3e411 | 2720 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2721 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2722 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2723 | block_find_non_opaque_type, NULL); | |
2724 | if (sym == NULL) | |
43f3e411 | 2725 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2726 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2727 | return SYMBOL_TYPE (sym); | |
2728 | } | |
08c23b0d | 2729 | |
b2e2f908 DE |
2730 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2731 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2732 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2733 | ||
2734 | static struct type * | |
2735 | basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index, | |
2736 | const char *name) | |
2737 | { | |
2738 | const struct compunit_symtab *cust; | |
2739 | const struct blockvector *bv; | |
2740 | const struct block *block; | |
2741 | const struct symbol *sym; | |
2742 | ||
2743 | ALL_OBJFILE_COMPUNITS (objfile, cust) | |
2744 | { | |
2745 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2746 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2747 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2748 | block_find_non_opaque_type, NULL); | |
2749 | if (sym != NULL) | |
2750 | { | |
2751 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2752 | return SYMBOL_TYPE (sym); | |
2753 | } | |
2754 | } | |
c906108c | 2755 | |
ccefe4c4 | 2756 | return NULL; |
b368761e | 2757 | } |
c906108c | 2758 | |
b368761e DC |
2759 | /* The standard implementation of lookup_transparent_type. This code |
2760 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2761 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2762 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2763 | global blocks. */ |
c906108c SS |
2764 | |
2765 | struct type * | |
b368761e | 2766 | basic_lookup_transparent_type (const char *name) |
c906108c | 2767 | { |
52f0bd74 | 2768 | struct objfile *objfile; |
ccefe4c4 | 2769 | struct type *t; |
c906108c SS |
2770 | |
2771 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2772 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2773 | of the desired name as a global, then do psymtab-to-symtab |
2774 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2775 | |
58b6ab13 | 2776 | ALL_OBJFILES (objfile) |
c5aa993b | 2777 | { |
b2e2f908 DE |
2778 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); |
2779 | if (t) | |
2780 | return t; | |
c5aa993b | 2781 | } |
c906108c | 2782 | |
ccefe4c4 | 2783 | ALL_OBJFILES (objfile) |
c5aa993b | 2784 | { |
ccefe4c4 TT |
2785 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); |
2786 | if (t) | |
2787 | return t; | |
c5aa993b | 2788 | } |
c906108c SS |
2789 | |
2790 | /* Now search the static file-level symbols. | |
2791 | Not strictly correct, but more useful than an error. | |
2792 | Do the symtab's first, then | |
c378eb4e | 2793 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2794 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2795 | conversion on the fly and return the found symbol. */ |
c906108c | 2796 | |
54ec275a | 2797 | ALL_OBJFILES (objfile) |
c5aa993b | 2798 | { |
b2e2f908 DE |
2799 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); |
2800 | if (t) | |
2801 | return t; | |
c5aa993b | 2802 | } |
c906108c | 2803 | |
ccefe4c4 | 2804 | ALL_OBJFILES (objfile) |
c5aa993b | 2805 | { |
ccefe4c4 TT |
2806 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); |
2807 | if (t) | |
2808 | return t; | |
c5aa993b | 2809 | } |
ccefe4c4 | 2810 | |
c906108c SS |
2811 | return (struct type *) 0; |
2812 | } | |
2813 | ||
4eeaa230 | 2814 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
14bc53a8 PA |
2815 | |
2816 | For each symbol that matches, CALLBACK is called. The symbol is | |
2817 | passed to the callback. | |
2818 | ||
2819 | If CALLBACK returns false, the iteration ends. Otherwise, the | |
4eeaa230 | 2820 | search continues. */ |
f8eba3c6 TT |
2821 | |
2822 | void | |
b5ec771e PA |
2823 | iterate_over_symbols (const struct block *block, |
2824 | const lookup_name_info &name, | |
f8eba3c6 | 2825 | const domain_enum domain, |
14bc53a8 | 2826 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2827 | { |
4eeaa230 DE |
2828 | struct block_iterator iter; |
2829 | struct symbol *sym; | |
f8eba3c6 | 2830 | |
358d6ab3 | 2831 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2832 | { |
4186eb54 KS |
2833 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2834 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2835 | { |
14bc53a8 | 2836 | if (!callback (sym)) |
4eeaa230 | 2837 | return; |
f8eba3c6 | 2838 | } |
f8eba3c6 TT |
2839 | } |
2840 | } | |
2841 | ||
43f3e411 DE |
2842 | /* Find the compunit symtab associated with PC and SECTION. |
2843 | This will read in debug info as necessary. */ | |
c906108c | 2844 | |
43f3e411 DE |
2845 | struct compunit_symtab * |
2846 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2847 | { |
43f3e411 DE |
2848 | struct compunit_symtab *cust; |
2849 | struct compunit_symtab *best_cust = NULL; | |
52f0bd74 | 2850 | struct objfile *objfile; |
c906108c | 2851 | CORE_ADDR distance = 0; |
77e371c0 | 2852 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2853 | |
2854 | /* If we know that this is not a text address, return failure. This is | |
2855 | necessary because we loop based on the block's high and low code | |
2856 | addresses, which do not include the data ranges, and because | |
2857 | we call find_pc_sect_psymtab which has a similar restriction based | |
2858 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 TT |
2859 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
2860 | if (msymbol.minsym | |
2861 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
2862 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
2863 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
2864 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
2865 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
8a48e967 | 2866 | return NULL; |
c906108c SS |
2867 | |
2868 | /* Search all symtabs for the one whose file contains our address, and which | |
2869 | is the smallest of all the ones containing the address. This is designed | |
2870 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2871 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2872 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2873 | ||
2874 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2875 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2876 | been read in already via the dependency mechanism. |
2877 | It might be swifter to create several symtabs with the same name | |
2878 | like xcoff does (I'm not sure). | |
2879 | ||
2880 | It also happens for objfiles that have their functions reordered. | |
2881 | For these, the symtab we are looking for is not necessarily read in. */ | |
2882 | ||
43f3e411 | 2883 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 2884 | { |
43f3e411 DE |
2885 | struct block *b; |
2886 | const struct blockvector *bv; | |
2887 | ||
2888 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
c5aa993b | 2889 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
c906108c | 2890 | |
c5aa993b | 2891 | if (BLOCK_START (b) <= pc |
c5aa993b | 2892 | && BLOCK_END (b) > pc |
c5aa993b JM |
2893 | && (distance == 0 |
2894 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2895 | { | |
2896 | /* For an objfile that has its functions reordered, | |
2897 | find_pc_psymtab will find the proper partial symbol table | |
2898 | and we simply return its corresponding symtab. */ | |
2899 | /* In order to better support objfiles that contain both | |
2900 | stabs and coff debugging info, we continue on if a psymtab | |
c378eb4e | 2901 | can't be found. */ |
ccefe4c4 | 2902 | if ((objfile->flags & OBJF_REORDERED) && objfile->sf) |
c5aa993b | 2903 | { |
43f3e411 | 2904 | struct compunit_symtab *result; |
433759f7 | 2905 | |
ccefe4c4 | 2906 | result |
43f3e411 DE |
2907 | = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2908 | msymbol, | |
2909 | pc, section, | |
2910 | 0); | |
2911 | if (result != NULL) | |
ccefe4c4 | 2912 | return result; |
c5aa993b JM |
2913 | } |
2914 | if (section != 0) | |
2915 | { | |
8157b174 | 2916 | struct block_iterator iter; |
261397f8 | 2917 | struct symbol *sym = NULL; |
c906108c | 2918 | |
de4f826b | 2919 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2920 | { |
261397f8 | 2921 | fixup_symbol_section (sym, objfile); |
e27d198c TT |
2922 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, sym), |
2923 | section)) | |
c5aa993b JM |
2924 | break; |
2925 | } | |
de4f826b | 2926 | if (sym == NULL) |
c378eb4e MS |
2927 | continue; /* No symbol in this symtab matches |
2928 | section. */ | |
c5aa993b JM |
2929 | } |
2930 | distance = BLOCK_END (b) - BLOCK_START (b); | |
43f3e411 | 2931 | best_cust = cust; |
c5aa993b JM |
2932 | } |
2933 | } | |
c906108c | 2934 | |
43f3e411 DE |
2935 | if (best_cust != NULL) |
2936 | return best_cust; | |
c906108c | 2937 | |
072cabfe DE |
2938 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2939 | ||
ccefe4c4 TT |
2940 | ALL_OBJFILES (objfile) |
2941 | { | |
43f3e411 | 2942 | struct compunit_symtab *result; |
433759f7 | 2943 | |
ccefe4c4 TT |
2944 | if (!objfile->sf) |
2945 | continue; | |
43f3e411 DE |
2946 | result = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2947 | msymbol, | |
2948 | pc, section, | |
2949 | 1); | |
2950 | if (result != NULL) | |
ccefe4c4 TT |
2951 | return result; |
2952 | } | |
2953 | ||
2954 | return NULL; | |
c906108c SS |
2955 | } |
2956 | ||
43f3e411 DE |
2957 | /* Find the compunit symtab associated with PC. |
2958 | This will read in debug info as necessary. | |
2959 | Backward compatibility, no section. */ | |
c906108c | 2960 | |
43f3e411 DE |
2961 | struct compunit_symtab * |
2962 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2963 | { |
43f3e411 | 2964 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2965 | } |
71a3c369 TT |
2966 | |
2967 | /* See symtab.h. */ | |
2968 | ||
2969 | struct symbol * | |
2970 | find_symbol_at_address (CORE_ADDR address) | |
2971 | { | |
2972 | struct objfile *objfile; | |
2973 | ||
2974 | ALL_OBJFILES (objfile) | |
2975 | { | |
2976 | if (objfile->sf == NULL | |
2977 | || objfile->sf->qf->find_compunit_symtab_by_address == NULL) | |
2978 | continue; | |
2979 | ||
2980 | struct compunit_symtab *symtab | |
2981 | = objfile->sf->qf->find_compunit_symtab_by_address (objfile, address); | |
2982 | if (symtab != NULL) | |
2983 | { | |
2984 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (symtab); | |
2985 | ||
2986 | for (int i = GLOBAL_BLOCK; i <= STATIC_BLOCK; ++i) | |
2987 | { | |
2988 | struct block *b = BLOCKVECTOR_BLOCK (bv, i); | |
2989 | struct block_iterator iter; | |
2990 | struct symbol *sym; | |
2991 | ||
2992 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
2993 | { | |
2994 | if (SYMBOL_CLASS (sym) == LOC_STATIC | |
2995 | && SYMBOL_VALUE_ADDRESS (sym) == address) | |
2996 | return sym; | |
2997 | } | |
2998 | } | |
2999 | } | |
3000 | } | |
3001 | ||
3002 | return NULL; | |
3003 | } | |
3004 | ||
c906108c | 3005 | \f |
c5aa993b | 3006 | |
7e73cedf | 3007 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
3008 | Return a structure containing a symtab pointer, a line number, |
3009 | and a pc range for the entire source line. | |
3010 | The value's .pc field is NOT the specified pc. | |
3011 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
3012 | use the line that ends there. Otherwise, in that case, the line | |
3013 | that begins there is used. */ | |
3014 | ||
3015 | /* The big complication here is that a line may start in one file, and end just | |
3016 | before the start of another file. This usually occurs when you #include | |
3017 | code in the middle of a subroutine. To properly find the end of a line's PC | |
3018 | range, we must search all symtabs associated with this compilation unit, and | |
3019 | find the one whose first PC is closer than that of the next line in this | |
3020 | symtab. */ | |
3021 | ||
3022 | /* If it's worth the effort, we could be using a binary search. */ | |
3023 | ||
3024 | struct symtab_and_line | |
714835d5 | 3025 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 3026 | { |
43f3e411 DE |
3027 | struct compunit_symtab *cust; |
3028 | struct symtab *iter_s; | |
52f0bd74 AC |
3029 | struct linetable *l; |
3030 | int len; | |
3031 | int i; | |
3032 | struct linetable_entry *item; | |
346d1dfe | 3033 | const struct blockvector *bv; |
7cbd4a93 | 3034 | struct bound_minimal_symbol msymbol; |
c906108c SS |
3035 | |
3036 | /* Info on best line seen so far, and where it starts, and its file. */ | |
3037 | ||
3038 | struct linetable_entry *best = NULL; | |
3039 | CORE_ADDR best_end = 0; | |
3040 | struct symtab *best_symtab = 0; | |
3041 | ||
3042 | /* Store here the first line number | |
3043 | of a file which contains the line at the smallest pc after PC. | |
3044 | If we don't find a line whose range contains PC, | |
3045 | we will use a line one less than this, | |
3046 | with a range from the start of that file to the first line's pc. */ | |
3047 | struct linetable_entry *alt = NULL; | |
c906108c SS |
3048 | |
3049 | /* Info on best line seen in this file. */ | |
3050 | ||
3051 | struct linetable_entry *prev; | |
3052 | ||
3053 | /* If this pc is not from the current frame, | |
3054 | it is the address of the end of a call instruction. | |
3055 | Quite likely that is the start of the following statement. | |
3056 | But what we want is the statement containing the instruction. | |
3057 | Fudge the pc to make sure we get that. */ | |
3058 | ||
b77b1eb7 JB |
3059 | /* It's tempting to assume that, if we can't find debugging info for |
3060 | any function enclosing PC, that we shouldn't search for line | |
3061 | number info, either. However, GAS can emit line number info for | |
3062 | assembly files --- very helpful when debugging hand-written | |
3063 | assembly code. In such a case, we'd have no debug info for the | |
3064 | function, but we would have line info. */ | |
648f4f79 | 3065 | |
c906108c SS |
3066 | if (notcurrent) |
3067 | pc -= 1; | |
3068 | ||
c5aa993b | 3069 | /* elz: added this because this function returned the wrong |
c906108c | 3070 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3071 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3072 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3073 | taken to be the one of the line before the pc. */ |
3074 | ||
c906108c | 3075 | /* RT: Further explanation: |
c5aa993b | 3076 | |
c906108c SS |
3077 | * We have stubs (trampolines) inserted between procedures. |
3078 | * | |
3079 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3080 | * exists in the main image. | |
3081 | * | |
3082 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3083 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3084 | * the others appear as text. E.g.: |
3085 | * | |
9af17804 | 3086 | * Minimal symbol table for main image |
c906108c SS |
3087 | * main: code for main (text symbol) |
3088 | * shr1: stub (trampoline symbol) | |
3089 | * foo: code for foo (text symbol) | |
3090 | * ... | |
3091 | * Minimal symbol table for "shr1" image: | |
3092 | * ... | |
3093 | * shr1: code for shr1 (text symbol) | |
3094 | * ... | |
3095 | * | |
3096 | * So the code below is trying to detect if we are in the stub | |
3097 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3098 | * and if found, do the symbolization from the real-code address | |
3099 | * rather than the stub address. | |
3100 | * | |
3101 | * Assumptions being made about the minimal symbol table: | |
3102 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3103 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3104 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3105 | * symbol (the "foo" text symbol for example) and will not |
3106 | * return the trampoline. | |
3107 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3108 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3109 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3110 | * check for the address being the same, to avoid an |
3111 | * infinite recursion. | |
3112 | */ | |
c5aa993b | 3113 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3114 | if (msymbol.minsym != NULL) |
3115 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3116 | { |
77e371c0 | 3117 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3118 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3119 | NULL); |
3120 | ||
3121 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3122 | /* I eliminated this warning since it is coming out |
3123 | * in the following situation: | |
3124 | * gdb shmain // test program with shared libraries | |
3125 | * (gdb) break shr1 // function in shared lib | |
3126 | * Warning: In stub for ... | |
9af17804 | 3127 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3128 | * so of course we can't find the real func/line info, |
3129 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3130 | * So I commented out the warning. RT */ |
3e43a32a | 3131 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3132 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3133 | ; | |
c5aa993b | 3134 | /* fall through */ |
77e371c0 TT |
3135 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3136 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3137 | /* Avoid infinite recursion */ |
c378eb4e | 3138 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3139 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3140 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3141 | ; | |
c5aa993b JM |
3142 | /* fall through */ |
3143 | else | |
77e371c0 | 3144 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3145 | } |
c906108c | 3146 | |
51abb421 PA |
3147 | symtab_and_line val; |
3148 | val.pspace = current_program_space; | |
c906108c | 3149 | |
43f3e411 DE |
3150 | cust = find_pc_sect_compunit_symtab (pc, section); |
3151 | if (cust == NULL) | |
c906108c | 3152 | { |
c378eb4e | 3153 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3154 | if (notcurrent) |
3155 | pc++; | |
3156 | val.pc = pc; | |
3157 | return val; | |
3158 | } | |
3159 | ||
43f3e411 | 3160 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3161 | |
3162 | /* Look at all the symtabs that share this blockvector. | |
3163 | They all have the same apriori range, that we found was right; | |
3164 | but they have different line tables. */ | |
3165 | ||
43f3e411 | 3166 | ALL_COMPUNIT_FILETABS (cust, iter_s) |
c906108c SS |
3167 | { |
3168 | /* Find the best line in this symtab. */ | |
43f3e411 | 3169 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3170 | if (!l) |
c5aa993b | 3171 | continue; |
c906108c SS |
3172 | len = l->nitems; |
3173 | if (len <= 0) | |
3174 | { | |
3175 | /* I think len can be zero if the symtab lacks line numbers | |
3176 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3177 | I'm not sure which, and maybe it depends on the symbol | |
3178 | reader). */ | |
3179 | continue; | |
3180 | } | |
3181 | ||
3182 | prev = NULL; | |
c378eb4e | 3183 | item = l->item; /* Get first line info. */ |
c906108c SS |
3184 | |
3185 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3186 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3187 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3188 | alt = item; |
c906108c SS |
3189 | |
3190 | for (i = 0; i < len; i++, item++) | |
3191 | { | |
3192 | /* Leave prev pointing to the linetable entry for the last line | |
3193 | that started at or before PC. */ | |
3194 | if (item->pc > pc) | |
3195 | break; | |
3196 | ||
3197 | prev = item; | |
3198 | } | |
3199 | ||
3200 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3201 | item points at the next line. If we ran off the end of the linetable |
3202 | (pc >= start of the last line), then prev == item. If pc < start of | |
3203 | the first line, prev will not be set. */ | |
c906108c SS |
3204 | |
3205 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3206 | If so, record this file, and its best line, as best so far. Don't |
3207 | save prev if it represents the end of a function (i.e. line number | |
3208 | 0) instead of a real line. */ | |
c906108c | 3209 | |
083ae935 | 3210 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3211 | { |
3212 | best = prev; | |
43f3e411 | 3213 | best_symtab = iter_s; |
25d53da1 KB |
3214 | |
3215 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3216 | if (best_end <= best->pc) | |
3217 | best_end = 0; | |
c906108c | 3218 | } |
25d53da1 KB |
3219 | |
3220 | /* If another line (denoted by ITEM) is in the linetable and its | |
3221 | PC is after BEST's PC, but before the current BEST_END, then | |
3222 | use ITEM's PC as the new best_end. */ | |
3223 | if (best && i < len && item->pc > best->pc | |
3224 | && (best_end == 0 || best_end > item->pc)) | |
3225 | best_end = item->pc; | |
c906108c SS |
3226 | } |
3227 | ||
3228 | if (!best_symtab) | |
3229 | { | |
e86e87f7 DJ |
3230 | /* If we didn't find any line number info, just return zeros. |
3231 | We used to return alt->line - 1 here, but that could be | |
3232 | anywhere; if we don't have line number info for this PC, | |
3233 | don't make some up. */ | |
3234 | val.pc = pc; | |
c906108c | 3235 | } |
e8717518 FF |
3236 | else if (best->line == 0) |
3237 | { | |
3238 | /* If our best fit is in a range of PC's for which no line | |
3239 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3240 | find any valid line information. */ |
e8717518 FF |
3241 | val.pc = pc; |
3242 | } | |
c906108c SS |
3243 | else |
3244 | { | |
3245 | val.symtab = best_symtab; | |
3246 | val.line = best->line; | |
3247 | val.pc = best->pc; | |
3248 | if (best_end && (!alt || best_end < alt->pc)) | |
3249 | val.end = best_end; | |
3250 | else if (alt) | |
3251 | val.end = alt->pc; | |
3252 | else | |
3253 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3254 | } | |
3255 | val.section = section; | |
3256 | return val; | |
3257 | } | |
3258 | ||
c378eb4e | 3259 | /* Backward compatibility (no section). */ |
c906108c SS |
3260 | |
3261 | struct symtab_and_line | |
fba45db2 | 3262 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3263 | { |
714835d5 | 3264 | struct obj_section *section; |
c906108c SS |
3265 | |
3266 | section = find_pc_overlay (pc); | |
3267 | if (pc_in_unmapped_range (pc, section)) | |
3268 | pc = overlay_mapped_address (pc, section); | |
3269 | return find_pc_sect_line (pc, section, notcurrent); | |
3270 | } | |
34248c3a DE |
3271 | |
3272 | /* See symtab.h. */ | |
3273 | ||
3274 | struct symtab * | |
3275 | find_pc_line_symtab (CORE_ADDR pc) | |
3276 | { | |
3277 | struct symtab_and_line sal; | |
3278 | ||
3279 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3280 | There are currently no callers that ever pass non-zero. */ | |
3281 | sal = find_pc_line (pc, 0); | |
3282 | return sal.symtab; | |
3283 | } | |
c906108c | 3284 | \f |
c906108c SS |
3285 | /* Find line number LINE in any symtab whose name is the same as |
3286 | SYMTAB. | |
3287 | ||
3288 | If found, return the symtab that contains the linetable in which it was | |
3289 | found, set *INDEX to the index in the linetable of the best entry | |
3290 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3291 | exact match. | |
3292 | ||
3293 | If not found, return NULL. */ | |
3294 | ||
50641945 | 3295 | struct symtab * |
433759f7 MS |
3296 | find_line_symtab (struct symtab *symtab, int line, |
3297 | int *index, int *exact_match) | |
c906108c | 3298 | { |
6f43c46f | 3299 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3300 | |
3301 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3302 | so far seen. */ | |
3303 | ||
3304 | int best_index; | |
3305 | struct linetable *best_linetable; | |
3306 | struct symtab *best_symtab; | |
3307 | ||
3308 | /* First try looking it up in the given symtab. */ | |
8435453b | 3309 | best_linetable = SYMTAB_LINETABLE (symtab); |
c906108c | 3310 | best_symtab = symtab; |
f8eba3c6 | 3311 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3312 | if (best_index < 0 || !exact) |
3313 | { | |
3314 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3315 | another symtab with the same name. In the case of xcoff, |
3316 | multiple csects for one source file (produced by IBM's FORTRAN | |
3317 | compiler) produce multiple symtabs (this is unavoidable | |
3318 | assuming csects can be at arbitrary places in memory and that | |
3319 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3320 | |
3321 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3322 | or 0 if none has been seen so far. |
3323 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3324 | int best; |
3325 | ||
3326 | struct objfile *objfile; | |
43f3e411 | 3327 | struct compunit_symtab *cu; |
c906108c SS |
3328 | struct symtab *s; |
3329 | ||
3330 | if (best_index >= 0) | |
3331 | best = best_linetable->item[best_index].line; | |
3332 | else | |
3333 | best = 0; | |
3334 | ||
ccefe4c4 | 3335 | ALL_OBJFILES (objfile) |
51432cca | 3336 | { |
ccefe4c4 | 3337 | if (objfile->sf) |
652a8996 | 3338 | objfile->sf->qf->expand_symtabs_with_fullname (objfile, |
05cba821 | 3339 | symtab_to_fullname (symtab)); |
51432cca CES |
3340 | } |
3341 | ||
43f3e411 | 3342 | ALL_FILETABS (objfile, cu, s) |
c5aa993b JM |
3343 | { |
3344 | struct linetable *l; | |
3345 | int ind; | |
c906108c | 3346 | |
3ffc00b8 | 3347 | if (FILENAME_CMP (symtab->filename, s->filename) != 0) |
c5aa993b | 3348 | continue; |
d180bcbd JK |
3349 | if (FILENAME_CMP (symtab_to_fullname (symtab), |
3350 | symtab_to_fullname (s)) != 0) | |
3ffc00b8 | 3351 | continue; |
8435453b | 3352 | l = SYMTAB_LINETABLE (s); |
f8eba3c6 | 3353 | ind = find_line_common (l, line, &exact, 0); |
c5aa993b JM |
3354 | if (ind >= 0) |
3355 | { | |
3356 | if (exact) | |
3357 | { | |
3358 | best_index = ind; | |
3359 | best_linetable = l; | |
3360 | best_symtab = s; | |
3361 | goto done; | |
3362 | } | |
3363 | if (best == 0 || l->item[ind].line < best) | |
3364 | { | |
3365 | best = l->item[ind].line; | |
3366 | best_index = ind; | |
3367 | best_linetable = l; | |
3368 | best_symtab = s; | |
3369 | } | |
3370 | } | |
3371 | } | |
c906108c | 3372 | } |
c5aa993b | 3373 | done: |
c906108c SS |
3374 | if (best_index < 0) |
3375 | return NULL; | |
3376 | ||
3377 | if (index) | |
3378 | *index = best_index; | |
3379 | if (exact_match) | |
3380 | *exact_match = exact; | |
3381 | ||
3382 | return best_symtab; | |
3383 | } | |
f8eba3c6 TT |
3384 | |
3385 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3386 | exactly match LINE. Returns an empty vector if there are no exact |
3387 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3388 | |
67d89901 | 3389 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3390 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3391 | struct linetable_entry **best_item) | |
3392 | { | |
c656bca5 | 3393 | int start = 0; |
67d89901 | 3394 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3395 | |
3396 | /* First, collect all the PCs that are at this line. */ | |
3397 | while (1) | |
3398 | { | |
3399 | int was_exact; | |
3400 | int idx; | |
3401 | ||
8435453b DE |
3402 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3403 | start); | |
f8eba3c6 TT |
3404 | if (idx < 0) |
3405 | break; | |
3406 | ||
3407 | if (!was_exact) | |
3408 | { | |
8435453b | 3409 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3410 | |
3411 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3412 | *best_item = item; | |
3413 | ||
3414 | break; | |
3415 | } | |
3416 | ||
67d89901 | 3417 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3418 | start = idx + 1; |
3419 | } | |
3420 | ||
3421 | return result; | |
3422 | } | |
3423 | ||
c906108c SS |
3424 | \f |
3425 | /* Set the PC value for a given source file and line number and return true. | |
3426 | Returns zero for invalid line number (and sets the PC to 0). | |
3427 | The source file is specified with a struct symtab. */ | |
3428 | ||
3429 | int | |
fba45db2 | 3430 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3431 | { |
3432 | struct linetable *l; | |
3433 | int ind; | |
3434 | ||
3435 | *pc = 0; | |
3436 | if (symtab == 0) | |
3437 | return 0; | |
3438 | ||
3439 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3440 | if (symtab != NULL) | |
3441 | { | |
8435453b | 3442 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3443 | *pc = l->item[ind].pc; |
3444 | return 1; | |
3445 | } | |
3446 | else | |
3447 | return 0; | |
3448 | } | |
3449 | ||
3450 | /* Find the range of pc values in a line. | |
3451 | Store the starting pc of the line into *STARTPTR | |
3452 | and the ending pc (start of next line) into *ENDPTR. | |
3453 | Returns 1 to indicate success. | |
3454 | Returns 0 if could not find the specified line. */ | |
3455 | ||
3456 | int | |
fba45db2 KB |
3457 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3458 | CORE_ADDR *endptr) | |
c906108c SS |
3459 | { |
3460 | CORE_ADDR startaddr; | |
3461 | struct symtab_and_line found_sal; | |
3462 | ||
3463 | startaddr = sal.pc; | |
c5aa993b | 3464 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3465 | return 0; |
3466 | ||
3467 | /* This whole function is based on address. For example, if line 10 has | |
3468 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3469 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3470 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3471 | This also insures that we never give a range like "starts at 0x134 | |
3472 | and ends at 0x12c". */ | |
3473 | ||
3474 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3475 | if (found_sal.line != sal.line) | |
3476 | { | |
3477 | /* The specified line (sal) has zero bytes. */ | |
3478 | *startptr = found_sal.pc; | |
3479 | *endptr = found_sal.pc; | |
3480 | } | |
3481 | else | |
3482 | { | |
3483 | *startptr = found_sal.pc; | |
3484 | *endptr = found_sal.end; | |
3485 | } | |
3486 | return 1; | |
3487 | } | |
3488 | ||
3489 | /* Given a line table and a line number, return the index into the line | |
3490 | table for the pc of the nearest line whose number is >= the specified one. | |
3491 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3492 | START is the index at which to start searching the line table. |
c906108c SS |
3493 | |
3494 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3495 | ||
3496 | static int | |
aa1ee363 | 3497 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3498 | int *exact_match, int start) |
c906108c | 3499 | { |
52f0bd74 AC |
3500 | int i; |
3501 | int len; | |
c906108c SS |
3502 | |
3503 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3504 | or 0 if none has been seen so far. | |
3505 | BEST_INDEX identifies the item for it. */ | |
3506 | ||
3507 | int best_index = -1; | |
3508 | int best = 0; | |
3509 | ||
b7589f7d DJ |
3510 | *exact_match = 0; |
3511 | ||
c906108c SS |
3512 | if (lineno <= 0) |
3513 | return -1; | |
3514 | if (l == 0) | |
3515 | return -1; | |
3516 | ||
3517 | len = l->nitems; | |
f8eba3c6 | 3518 | for (i = start; i < len; i++) |
c906108c | 3519 | { |
aa1ee363 | 3520 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3521 | |
3522 | if (item->line == lineno) | |
3523 | { | |
3524 | /* Return the first (lowest address) entry which matches. */ | |
3525 | *exact_match = 1; | |
3526 | return i; | |
3527 | } | |
3528 | ||
3529 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3530 | { | |
3531 | best = item->line; | |
3532 | best_index = i; | |
3533 | } | |
3534 | } | |
3535 | ||
3536 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3537 | return best_index; |
3538 | } | |
3539 | ||
3540 | int | |
fba45db2 | 3541 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3542 | { |
3543 | struct symtab_and_line sal; | |
433759f7 | 3544 | |
c906108c SS |
3545 | sal = find_pc_line (pc, 0); |
3546 | *startptr = sal.pc; | |
3547 | *endptr = sal.end; | |
3548 | return sal.symtab != 0; | |
3549 | } | |
3550 | ||
aab2f208 DE |
3551 | /* Given a function symbol SYM, find the symtab and line for the start |
3552 | of the function. | |
3553 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
6e22494e JK |
3554 | of real code inside the function. |
3555 | This function should return SALs matching those from minsym_found, | |
3556 | otherwise false multiple-locations breakpoints could be placed. */ | |
aab2f208 DE |
3557 | |
3558 | struct symtab_and_line | |
3559 | find_function_start_sal (struct symbol *sym, int funfirstline) | |
3560 | { | |
aab2f208 | 3561 | fixup_symbol_section (sym, NULL); |
51abb421 PA |
3562 | |
3563 | obj_section *section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
3564 | symtab_and_line sal | |
3565 | = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), section, 0); | |
06871ae8 | 3566 | sal.symbol = sym; |
aab2f208 | 3567 | |
6e22494e JK |
3568 | if (funfirstline && sal.symtab != NULL |
3569 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3570 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3571 | { | |
141c5cc4 JK |
3572 | struct gdbarch *gdbarch = symbol_arch (sym); |
3573 | ||
6e22494e | 3574 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
141c5cc4 JK |
3575 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3576 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3577 | return sal; |
3578 | } | |
3579 | ||
aab2f208 DE |
3580 | /* We always should have a line for the function start address. |
3581 | If we don't, something is odd. Create a plain SAL refering | |
3582 | just the PC and hope that skip_prologue_sal (if requested) | |
3583 | can find a line number for after the prologue. */ | |
3584 | if (sal.pc < BLOCK_START (SYMBOL_BLOCK_VALUE (sym))) | |
3585 | { | |
51abb421 | 3586 | sal = {}; |
aab2f208 DE |
3587 | sal.pspace = current_program_space; |
3588 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
08be3fe3 | 3589 | sal.section = section; |
06871ae8 | 3590 | sal.symbol = sym; |
aab2f208 DE |
3591 | } |
3592 | ||
3593 | if (funfirstline) | |
3594 | skip_prologue_sal (&sal); | |
3595 | ||
3596 | return sal; | |
3597 | } | |
3598 | ||
8c7a1ee8 EZ |
3599 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3600 | address for that function that has an entry in SYMTAB's line info | |
3601 | table. If such an entry cannot be found, return FUNC_ADDR | |
3602 | unaltered. */ | |
eca864fe | 3603 | |
70221824 | 3604 | static CORE_ADDR |
8c7a1ee8 EZ |
3605 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3606 | { | |
3607 | CORE_ADDR func_start, func_end; | |
3608 | struct linetable *l; | |
952a6d41 | 3609 | int i; |
8c7a1ee8 EZ |
3610 | |
3611 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3612 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3613 | if (l == NULL) |
3614 | return func_addr; | |
3615 | ||
3616 | /* Get the range for the function's PC values, or give up if we | |
3617 | cannot, for some reason. */ | |
3618 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3619 | return func_addr; | |
3620 | ||
3621 | /* Linetable entries are ordered by PC values, see the commentary in | |
3622 | symtab.h where `struct linetable' is defined. Thus, the first | |
3623 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3624 | address we are looking for. */ | |
3625 | for (i = 0; i < l->nitems; i++) | |
3626 | { | |
3627 | struct linetable_entry *item = &(l->item[i]); | |
3628 | ||
3629 | /* Don't use line numbers of zero, they mark special entries in | |
3630 | the table. See the commentary on symtab.h before the | |
3631 | definition of struct linetable. */ | |
3632 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3633 | return item->pc; | |
3634 | } | |
3635 | ||
3636 | return func_addr; | |
3637 | } | |
3638 | ||
059acae7 UW |
3639 | /* Adjust SAL to the first instruction past the function prologue. |
3640 | If the PC was explicitly specified, the SAL is not changed. | |
3641 | If the line number was explicitly specified, at most the SAL's PC | |
3642 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3643 | |
059acae7 UW |
3644 | void |
3645 | skip_prologue_sal (struct symtab_and_line *sal) | |
3646 | { | |
3647 | struct symbol *sym; | |
3648 | struct symtab_and_line start_sal; | |
8be455d7 | 3649 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3650 | struct obj_section *section; |
3651 | const char *name; | |
3652 | struct objfile *objfile; | |
3653 | struct gdbarch *gdbarch; | |
3977b71f | 3654 | const struct block *b, *function_block; |
8be455d7 | 3655 | int force_skip, skip; |
c906108c | 3656 | |
a4b411d6 | 3657 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3658 | if (sal->explicit_pc) |
3659 | return; | |
6c95b8df | 3660 | |
5ed8105e PA |
3661 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3662 | ||
059acae7 | 3663 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3664 | |
059acae7 UW |
3665 | sym = find_pc_sect_function (sal->pc, sal->section); |
3666 | if (sym != NULL) | |
bccdca4a | 3667 | { |
059acae7 UW |
3668 | fixup_symbol_section (sym, NULL); |
3669 | ||
08be3fe3 | 3670 | objfile = symbol_objfile (sym); |
059acae7 | 3671 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3672 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3673 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3674 | } |
059acae7 UW |
3675 | else |
3676 | { | |
7c7b6655 TT |
3677 | struct bound_minimal_symbol msymbol |
3678 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3679 | |
7c7b6655 | 3680 | if (msymbol.minsym == NULL) |
5ed8105e | 3681 | return; |
059acae7 | 3682 | |
7c7b6655 | 3683 | objfile = msymbol.objfile; |
77e371c0 | 3684 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3685 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3686 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3687 | } |
3688 | ||
3689 | gdbarch = get_objfile_arch (objfile); | |
3690 | ||
8be455d7 JK |
3691 | /* Process the prologue in two passes. In the first pass try to skip the |
3692 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3693 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3694 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3695 | |
8be455d7 JK |
3696 | skip = 1; |
3697 | force_skip = 1; | |
059acae7 | 3698 | |
8be455d7 JK |
3699 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3700 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3701 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3702 | if (sym != NULL |
3703 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3704 | force_skip = 0; |
059acae7 | 3705 | |
8be455d7 JK |
3706 | saved_pc = pc; |
3707 | do | |
c906108c | 3708 | { |
8be455d7 | 3709 | pc = saved_pc; |
4309257c | 3710 | |
8be455d7 JK |
3711 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3712 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3713 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3714 | pc = overlay_unmapped_address (pc, section); | |
3715 | ||
3716 | /* Skip "first line" of function (which is actually its prologue). */ | |
3717 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3718 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3719 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3720 | if (skip) |
46a62268 | 3721 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3722 | |
3723 | /* For overlays, map pc back into its mapped VMA range. */ | |
3724 | pc = overlay_mapped_address (pc, section); | |
3725 | ||
3726 | /* Calculate line number. */ | |
059acae7 | 3727 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3728 | |
3729 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3730 | line is still part of the same function. */ | |
3731 | if (skip && start_sal.pc != pc | |
b1d96efd JK |
3732 | && (sym ? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
3733 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
7cbd4a93 TT |
3734 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3735 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3736 | { |
3737 | /* First pc of next line */ | |
3738 | pc = start_sal.end; | |
3739 | /* Recalculate the line number (might not be N+1). */ | |
3740 | start_sal = find_pc_sect_line (pc, section, 0); | |
3741 | } | |
3742 | ||
3743 | /* On targets with executable formats that don't have a concept of | |
3744 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3745 | to `__main' in `main' between the prologue and before user | |
3746 | code. */ | |
3747 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3748 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3749 | { |
3750 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3751 | /* Recalculate the line number (might not be N+1). */ | |
3752 | start_sal = find_pc_sect_line (pc, section, 0); | |
3753 | force_skip = 1; | |
3754 | } | |
4309257c | 3755 | } |
8be455d7 | 3756 | while (!force_skip && skip--); |
4309257c | 3757 | |
8c7a1ee8 EZ |
3758 | /* If we still don't have a valid source line, try to find the first |
3759 | PC in the lineinfo table that belongs to the same function. This | |
3760 | happens with COFF debug info, which does not seem to have an | |
3761 | entry in lineinfo table for the code after the prologue which has | |
3762 | no direct relation to source. For example, this was found to be | |
3763 | the case with the DJGPP target using "gcc -gcoff" when the | |
3764 | compiler inserted code after the prologue to make sure the stack | |
3765 | is aligned. */ | |
8be455d7 | 3766 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3767 | { |
08be3fe3 | 3768 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3769 | /* Recalculate the line number. */ |
059acae7 | 3770 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3771 | } |
3772 | ||
059acae7 UW |
3773 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3774 | forward SAL to the end of the prologue. */ | |
3775 | if (sal->pc >= pc) | |
3776 | return; | |
3777 | ||
3778 | sal->pc = pc; | |
3779 | sal->section = section; | |
3780 | ||
3781 | /* Unless the explicit_line flag was set, update the SAL line | |
3782 | and symtab to correspond to the modified PC location. */ | |
3783 | if (sal->explicit_line) | |
3784 | return; | |
3785 | ||
3786 | sal->symtab = start_sal.symtab; | |
3787 | sal->line = start_sal.line; | |
3788 | sal->end = start_sal.end; | |
c906108c | 3789 | |
edb3359d DJ |
3790 | /* Check if we are now inside an inlined function. If we can, |
3791 | use the call site of the function instead. */ | |
059acae7 | 3792 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3793 | function_block = NULL; |
3794 | while (b != NULL) | |
3795 | { | |
3796 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3797 | function_block = b; | |
3798 | else if (BLOCK_FUNCTION (b) != NULL) | |
3799 | break; | |
3800 | b = BLOCK_SUPERBLOCK (b); | |
3801 | } | |
3802 | if (function_block != NULL | |
3803 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3804 | { | |
059acae7 | 3805 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3806 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3807 | } |
c906108c | 3808 | } |
50641945 | 3809 | |
f1f58506 DE |
3810 | /* Given PC at the function's start address, attempt to find the |
3811 | prologue end using SAL information. Return zero if the skip fails. | |
3812 | ||
3813 | A non-optimized prologue traditionally has one SAL for the function | |
3814 | and a second for the function body. A single line function has | |
3815 | them both pointing at the same line. | |
3816 | ||
3817 | An optimized prologue is similar but the prologue may contain | |
3818 | instructions (SALs) from the instruction body. Need to skip those | |
3819 | while not getting into the function body. | |
3820 | ||
3821 | The functions end point and an increasing SAL line are used as | |
3822 | indicators of the prologue's endpoint. | |
3823 | ||
3824 | This code is based on the function refine_prologue_limit | |
3825 | (found in ia64). */ | |
3826 | ||
3827 | CORE_ADDR | |
3828 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3829 | { | |
3830 | struct symtab_and_line prologue_sal; | |
3831 | CORE_ADDR start_pc; | |
3832 | CORE_ADDR end_pc; | |
3833 | const struct block *bl; | |
3834 | ||
3835 | /* Get an initial range for the function. */ | |
3836 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3837 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3838 | ||
3839 | prologue_sal = find_pc_line (start_pc, 0); | |
3840 | if (prologue_sal.line != 0) | |
3841 | { | |
3842 | /* For languages other than assembly, treat two consecutive line | |
3843 | entries at the same address as a zero-instruction prologue. | |
3844 | The GNU assembler emits separate line notes for each instruction | |
3845 | in a multi-instruction macro, but compilers generally will not | |
3846 | do this. */ | |
3847 | if (prologue_sal.symtab->language != language_asm) | |
3848 | { | |
8435453b | 3849 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3850 | int idx = 0; |
3851 | ||
3852 | /* Skip any earlier lines, and any end-of-sequence marker | |
3853 | from a previous function. */ | |
3854 | while (linetable->item[idx].pc != prologue_sal.pc | |
3855 | || linetable->item[idx].line == 0) | |
3856 | idx++; | |
3857 | ||
3858 | if (idx+1 < linetable->nitems | |
3859 | && linetable->item[idx+1].line != 0 | |
3860 | && linetable->item[idx+1].pc == start_pc) | |
3861 | return start_pc; | |
3862 | } | |
3863 | ||
3864 | /* If there is only one sal that covers the entire function, | |
3865 | then it is probably a single line function, like | |
3866 | "foo(){}". */ | |
3867 | if (prologue_sal.end >= end_pc) | |
3868 | return 0; | |
3869 | ||
3870 | while (prologue_sal.end < end_pc) | |
3871 | { | |
3872 | struct symtab_and_line sal; | |
3873 | ||
3874 | sal = find_pc_line (prologue_sal.end, 0); | |
3875 | if (sal.line == 0) | |
3876 | break; | |
3877 | /* Assume that a consecutive SAL for the same (or larger) | |
3878 | line mark the prologue -> body transition. */ | |
3879 | if (sal.line >= prologue_sal.line) | |
3880 | break; | |
3881 | /* Likewise if we are in a different symtab altogether | |
3882 | (e.g. within a file included via #include). */ | |
3883 | if (sal.symtab != prologue_sal.symtab) | |
3884 | break; | |
3885 | ||
3886 | /* The line number is smaller. Check that it's from the | |
3887 | same function, not something inlined. If it's inlined, | |
3888 | then there is no point comparing the line numbers. */ | |
3889 | bl = block_for_pc (prologue_sal.end); | |
3890 | while (bl) | |
3891 | { | |
3892 | if (block_inlined_p (bl)) | |
3893 | break; | |
3894 | if (BLOCK_FUNCTION (bl)) | |
3895 | { | |
3896 | bl = NULL; | |
3897 | break; | |
3898 | } | |
3899 | bl = BLOCK_SUPERBLOCK (bl); | |
3900 | } | |
3901 | if (bl != NULL) | |
3902 | break; | |
3903 | ||
3904 | /* The case in which compiler's optimizer/scheduler has | |
3905 | moved instructions into the prologue. We look ahead in | |
3906 | the function looking for address ranges whose | |
3907 | corresponding line number is less the first one that we | |
3908 | found for the function. This is more conservative then | |
3909 | refine_prologue_limit which scans a large number of SALs | |
3910 | looking for any in the prologue. */ | |
3911 | prologue_sal = sal; | |
3912 | } | |
3913 | } | |
3914 | ||
3915 | if (prologue_sal.end < end_pc) | |
3916 | /* Return the end of this line, or zero if we could not find a | |
3917 | line. */ | |
3918 | return prologue_sal.end; | |
3919 | else | |
3920 | /* Don't return END_PC, which is past the end of the function. */ | |
3921 | return prologue_sal.pc; | |
3922 | } | |
bf223d3e PA |
3923 | |
3924 | /* See symtab.h. */ | |
3925 | ||
3926 | symbol * | |
3927 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3928 | { | |
4024cf2b PA |
3929 | CORE_ADDR func_addr; |
3930 | if (!msymbol_is_function (msymbol.objfile, msymbol.minsym, &func_addr)) | |
bf223d3e PA |
3931 | return NULL; |
3932 | ||
4024cf2b | 3933 | symbol *sym = find_pc_function (func_addr); |
bf223d3e PA |
3934 | if (sym != NULL |
3935 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
4024cf2b | 3936 | && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) == func_addr) |
bf223d3e PA |
3937 | return sym; |
3938 | ||
3939 | return NULL; | |
3940 | } | |
3941 | ||
f1f58506 | 3942 | \f |
c906108c SS |
3943 | /* If P is of the form "operator[ \t]+..." where `...' is |
3944 | some legitimate operator text, return a pointer to the | |
3945 | beginning of the substring of the operator text. | |
3946 | Otherwise, return "". */ | |
eca864fe | 3947 | |
96142726 TT |
3948 | static const char * |
3949 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3950 | { |
3951 | *end = ""; | |
8090b426 | 3952 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3953 | return *end; |
8090b426 | 3954 | p += CP_OPERATOR_LEN; |
c906108c SS |
3955 | |
3956 | /* Don't get faked out by `operator' being part of a longer | |
3957 | identifier. */ | |
c5aa993b | 3958 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3959 | return *end; |
3960 | ||
3961 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
3962 | while (*p == ' ' || *p == '\t') | |
3963 | p++; | |
3964 | ||
c378eb4e | 3965 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 3966 | |
c5aa993b | 3967 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 3968 | { |
96142726 | 3969 | const char *q = p + 1; |
433759f7 | 3970 | |
c5aa993b | 3971 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
3972 | q++; |
3973 | *end = q; | |
3974 | return p; | |
3975 | } | |
3976 | ||
53e8ad3d MS |
3977 | while (*p) |
3978 | switch (*p) | |
3979 | { | |
3980 | case '\\': /* regexp quoting */ | |
3981 | if (p[1] == '*') | |
3982 | { | |
3e43a32a | 3983 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
3984 | *end = p + 3; |
3985 | else /* 'operator\*' */ | |
3986 | *end = p + 2; | |
3987 | return p; | |
3988 | } | |
3989 | else if (p[1] == '[') | |
3990 | { | |
3991 | if (p[2] == ']') | |
3e43a32a MS |
3992 | error (_("mismatched quoting on brackets, " |
3993 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
3994 | else if (p[2] == '\\' && p[3] == ']') |
3995 | { | |
3996 | *end = p + 4; /* 'operator\[\]' */ | |
3997 | return p; | |
3998 | } | |
3999 | else | |
8a3fe4f8 | 4000 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 4001 | } |
9af17804 | 4002 | else |
53e8ad3d | 4003 | { |
c378eb4e | 4004 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
4005 | p++; |
4006 | continue; | |
4007 | } | |
4008 | break; | |
4009 | case '!': | |
4010 | case '=': | |
4011 | case '*': | |
4012 | case '/': | |
4013 | case '%': | |
4014 | case '^': | |
4015 | if (p[1] == '=') | |
4016 | *end = p + 2; | |
4017 | else | |
4018 | *end = p + 1; | |
4019 | return p; | |
4020 | case '<': | |
4021 | case '>': | |
4022 | case '+': | |
4023 | case '-': | |
4024 | case '&': | |
4025 | case '|': | |
4026 | if (p[0] == '-' && p[1] == '>') | |
4027 | { | |
c378eb4e | 4028 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
4029 | if (p[2] == '*') |
4030 | { | |
4031 | *end = p + 3; /* 'operator->*' */ | |
4032 | return p; | |
4033 | } | |
4034 | else if (p[2] == '\\') | |
4035 | { | |
4036 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
4037 | return p; | |
4038 | } | |
4039 | else | |
4040 | { | |
4041 | *end = p + 2; /* 'operator->' */ | |
4042 | return p; | |
4043 | } | |
4044 | } | |
4045 | if (p[1] == '=' || p[1] == p[0]) | |
4046 | *end = p + 2; | |
4047 | else | |
4048 | *end = p + 1; | |
4049 | return p; | |
4050 | case '~': | |
4051 | case ',': | |
c5aa993b | 4052 | *end = p + 1; |
53e8ad3d MS |
4053 | return p; |
4054 | case '(': | |
4055 | if (p[1] != ')') | |
3e43a32a MS |
4056 | error (_("`operator ()' must be specified " |
4057 | "without whitespace in `()'")); | |
c5aa993b | 4058 | *end = p + 2; |
53e8ad3d MS |
4059 | return p; |
4060 | case '?': | |
4061 | if (p[1] != ':') | |
3e43a32a MS |
4062 | error (_("`operator ?:' must be specified " |
4063 | "without whitespace in `?:'")); | |
53e8ad3d MS |
4064 | *end = p + 2; |
4065 | return p; | |
4066 | case '[': | |
4067 | if (p[1] != ']') | |
3e43a32a MS |
4068 | error (_("`operator []' must be specified " |
4069 | "without whitespace in `[]'")); | |
53e8ad3d MS |
4070 | *end = p + 2; |
4071 | return p; | |
4072 | default: | |
8a3fe4f8 | 4073 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
4074 | break; |
4075 | } | |
4076 | ||
c906108c SS |
4077 | *end = ""; |
4078 | return *end; | |
4079 | } | |
c906108c | 4080 | \f |
c5aa993b | 4081 | |
9fdc877b DE |
4082 | /* Data structure to maintain printing state for output_source_filename. */ |
4083 | ||
4084 | struct output_source_filename_data | |
4085 | { | |
4086 | /* Cache of what we've seen so far. */ | |
4087 | struct filename_seen_cache *filename_seen_cache; | |
4088 | ||
4089 | /* Flag of whether we're printing the first one. */ | |
4090 | int first; | |
4091 | }; | |
4092 | ||
c94fdfd0 | 4093 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4094 | NAME is the name to print. |
4095 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4096 | |
c94fdfd0 | 4097 | static void |
9fdc877b DE |
4098 | output_source_filename (const char *name, |
4099 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4100 | { |
4101 | /* Since a single source file can result in several partial symbol | |
4102 | tables, we need to avoid printing it more than once. Note: if | |
4103 | some of the psymtabs are read in and some are not, it gets | |
4104 | printed both under "Source files for which symbols have been | |
4105 | read" and "Source files for which symbols will be read in on | |
4106 | demand". I consider this a reasonable way to deal with the | |
4107 | situation. I'm not sure whether this can also happen for | |
4108 | symtabs; it doesn't hurt to check. */ | |
4109 | ||
4110 | /* Was NAME already seen? */ | |
bbf2f4df | 4111 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4112 | { |
4113 | /* Yes; don't print it again. */ | |
4114 | return; | |
4115 | } | |
9fdc877b | 4116 | |
c94fdfd0 | 4117 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
4118 | if (! data->first) |
4119 | printf_filtered (", "); | |
4120 | data->first = 0; | |
c906108c SS |
4121 | |
4122 | wrap_here (""); | |
4123 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 4124 | } |
c906108c | 4125 | |
ccefe4c4 | 4126 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4127 | |
ccefe4c4 | 4128 | static void |
533a737e | 4129 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4130 | void *data) |
4131 | { | |
19ba03f4 SM |
4132 | output_source_filename (fullname ? fullname : filename, |
4133 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4134 | } |
4135 | ||
c906108c | 4136 | static void |
1d12d88f | 4137 | info_sources_command (const char *ignore, int from_tty) |
c906108c | 4138 | { |
43f3e411 | 4139 | struct compunit_symtab *cu; |
52f0bd74 | 4140 | struct symtab *s; |
52f0bd74 | 4141 | struct objfile *objfile; |
9fdc877b | 4142 | struct output_source_filename_data data; |
c5aa993b | 4143 | |
c906108c SS |
4144 | if (!have_full_symbols () && !have_partial_symbols ()) |
4145 | { | |
8a3fe4f8 | 4146 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4147 | } |
c5aa993b | 4148 | |
bbf2f4df PA |
4149 | filename_seen_cache filenames_seen; |
4150 | ||
4151 | data.filename_seen_cache = &filenames_seen; | |
9fdc877b | 4152 | |
c906108c SS |
4153 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
4154 | ||
9fdc877b | 4155 | data.first = 1; |
43f3e411 | 4156 | ALL_FILETABS (objfile, cu, s) |
c5aa993b | 4157 | { |
d092d1a2 | 4158 | const char *fullname = symtab_to_fullname (s); |
433759f7 | 4159 | |
f35a17b5 | 4160 | output_source_filename (fullname, &data); |
c5aa993b | 4161 | } |
c906108c | 4162 | printf_filtered ("\n\n"); |
c5aa993b | 4163 | |
3e43a32a MS |
4164 | printf_filtered ("Source files for which symbols " |
4165 | "will be read in on demand:\n\n"); | |
c906108c | 4166 | |
bbf2f4df | 4167 | filenames_seen.clear (); |
9fdc877b | 4168 | data.first = 1; |
bb4142cf DE |
4169 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4170 | 1 /*need_fullname*/); | |
c906108c SS |
4171 | printf_filtered ("\n"); |
4172 | } | |
4173 | ||
fbd9ab74 JK |
4174 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4175 | non-zero compare only lbasename of FILES. */ | |
4176 | ||
c906108c | 4177 | static int |
96142726 | 4178 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4179 | { |
4180 | int i; | |
4181 | ||
4182 | if (file != NULL && nfiles != 0) | |
4183 | { | |
4184 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4185 | { |
fbd9ab74 JK |
4186 | if (compare_filenames_for_search (file, (basenames |
4187 | ? lbasename (files[i]) | |
4188 | : files[i]))) | |
c5aa993b JM |
4189 | return 1; |
4190 | } | |
c906108c SS |
4191 | } |
4192 | else if (nfiles == 0) | |
4193 | return 1; | |
4194 | return 0; | |
4195 | } | |
4196 | ||
b52109bc | 4197 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4198 | sort symbols, not minimal symbols. */ |
eca864fe | 4199 | |
b9c04fb2 TT |
4200 | int |
4201 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4202 | const symbol_search &sym_b) | |
434d2d4f | 4203 | { |
b52109bc DE |
4204 | int c; |
4205 | ||
b9c04fb2 TT |
4206 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4207 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4208 | if (c != 0) |
4209 | return c; | |
434d2d4f | 4210 | |
b9c04fb2 TT |
4211 | if (sym_a.block != sym_b.block) |
4212 | return sym_a.block - sym_b.block; | |
b52109bc | 4213 | |
b9c04fb2 TT |
4214 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4215 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4216 | } |
4217 | ||
b9c04fb2 | 4218 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4219 | |
4220 | static void | |
b9c04fb2 | 4221 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4222 | { |
b9c04fb2 TT |
4223 | std::sort (result->begin (), result->end ()); |
4224 | result->erase (std::unique (result->begin (), result->end ()), | |
4225 | result->end ()); | |
434d2d4f | 4226 | } |
5bd98722 | 4227 | |
c906108c | 4228 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4229 | returning the results. |
c906108c SS |
4230 | |
4231 | Only symbols of KIND are searched: | |
e8930875 JK |
4232 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
4233 | and constants (enums) | |
176620f1 EZ |
4234 | FUNCTIONS_DOMAIN - search all functions |
4235 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4236 | ALL_DOMAIN - an internal error for this function |
c906108c | 4237 | |
b52109bc DE |
4238 | Within each file the results are sorted locally; each symtab's global and |
4239 | static blocks are separately alphabetized. | |
4240 | Duplicate entries are removed. */ | |
c378eb4e | 4241 | |
b9c04fb2 | 4242 | std::vector<symbol_search> |
96142726 | 4243 | search_symbols (const char *regexp, enum search_domain kind, |
b9c04fb2 | 4244 | int nfiles, const char *files[]) |
c906108c | 4245 | { |
43f3e411 | 4246 | struct compunit_symtab *cust; |
346d1dfe | 4247 | const struct blockvector *bv; |
52f0bd74 AC |
4248 | struct block *b; |
4249 | int i = 0; | |
8157b174 | 4250 | struct block_iterator iter; |
52f0bd74 | 4251 | struct symbol *sym; |
c906108c SS |
4252 | struct objfile *objfile; |
4253 | struct minimal_symbol *msymbol; | |
c906108c | 4254 | int found_misc = 0; |
bc043ef3 | 4255 | static const enum minimal_symbol_type types[] |
e8930875 | 4256 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 4257 | static const enum minimal_symbol_type types2[] |
e8930875 | 4258 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 4259 | static const enum minimal_symbol_type types3[] |
e8930875 | 4260 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 4261 | static const enum minimal_symbol_type types4[] |
e8930875 | 4262 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
4263 | enum minimal_symbol_type ourtype; |
4264 | enum minimal_symbol_type ourtype2; | |
4265 | enum minimal_symbol_type ourtype3; | |
4266 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4267 | std::vector<symbol_search> result; |
2d7cc5c7 | 4268 | gdb::optional<compiled_regex> preg; |
c906108c | 4269 | |
e8930875 JK |
4270 | gdb_assert (kind <= TYPES_DOMAIN); |
4271 | ||
8903c50d TT |
4272 | ourtype = types[kind]; |
4273 | ourtype2 = types2[kind]; | |
4274 | ourtype3 = types3[kind]; | |
4275 | ourtype4 = types4[kind]; | |
c906108c | 4276 | |
c906108c SS |
4277 | if (regexp != NULL) |
4278 | { | |
4279 | /* Make sure spacing is right for C++ operators. | |
4280 | This is just a courtesy to make the matching less sensitive | |
4281 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4282 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4283 | const char *opend; |
4284 | const char *opname = operator_chars (regexp, &opend); | |
433759f7 | 4285 | |
c906108c | 4286 | if (*opname) |
c5aa993b | 4287 | { |
3e43a32a MS |
4288 | int fix = -1; /* -1 means ok; otherwise number of |
4289 | spaces needed. */ | |
433759f7 | 4290 | |
c5aa993b JM |
4291 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4292 | { | |
c378eb4e | 4293 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4294 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4295 | fix = 1; | |
4296 | } | |
4297 | else | |
4298 | { | |
c378eb4e | 4299 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4300 | if (opname[-1] == ' ') |
4301 | fix = 0; | |
4302 | } | |
c378eb4e | 4303 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4304 | if (fix >= 0) |
4305 | { | |
045f55a6 | 4306 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4307 | |
c5aa993b JM |
4308 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4309 | regexp = tmp; | |
4310 | } | |
4311 | } | |
4312 | ||
2d7cc5c7 PA |
4313 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4314 | ? REG_ICASE : 0); | |
4315 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4316 | } |
4317 | ||
4318 | /* Search through the partial symtabs *first* for all symbols | |
4319 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4320 | the machinery below. */ |
14bc53a8 PA |
4321 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4322 | { | |
4323 | return file_matches (filename, files, nfiles, | |
4324 | basenames); | |
4325 | }, | |
b5ec771e | 4326 | lookup_name_info::match_any (), |
14bc53a8 PA |
4327 | [&] (const char *symname) |
4328 | { | |
2d7cc5c7 PA |
4329 | return (!preg || preg->exec (symname, |
4330 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4331 | }, |
4332 | NULL, | |
4333 | kind); | |
c906108c SS |
4334 | |
4335 | /* Here, we search through the minimal symbol tables for functions | |
4336 | and variables that match, and force their symbols to be read. | |
4337 | This is in particular necessary for demangled variable names, | |
4338 | which are no longer put into the partial symbol tables. | |
4339 | The symbol will then be found during the scan of symtabs below. | |
4340 | ||
4341 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4342 | for the function, for variables we have to call |
4343 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4344 | has debug info. | |
c906108c | 4345 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4346 | any matching symbols without debug info. |
4347 | We only search the objfile the msymbol came from, we no longer search | |
4348 | all objfiles. In large programs (1000s of shared libs) searching all | |
4349 | objfiles is not worth the pain. */ | |
c906108c | 4350 | |
176620f1 | 4351 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
4352 | { |
4353 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 4354 | { |
89295b4d PP |
4355 | QUIT; |
4356 | ||
422d65e7 DE |
4357 | if (msymbol->created_by_gdb) |
4358 | continue; | |
4359 | ||
d50bd42b DE |
4360 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4361 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4362 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4363 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 4364 | { |
2d7cc5c7 PA |
4365 | if (!preg |
4366 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4367 | NULL, 0) == 0) | |
c5aa993b | 4368 | { |
422d65e7 DE |
4369 | /* Note: An important side-effect of these lookup functions |
4370 | is to expand the symbol table if msymbol is found, for the | |
43f3e411 | 4371 | benefit of the next loop on ALL_COMPUNITS. */ |
422d65e7 | 4372 | if (kind == FUNCTIONS_DOMAIN |
43f3e411 DE |
4373 | ? (find_pc_compunit_symtab |
4374 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL) | |
422d65e7 | 4375 | : (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 4376 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
d12307c1 | 4377 | .symbol == NULL)) |
422d65e7 | 4378 | found_misc = 1; |
c5aa993b JM |
4379 | } |
4380 | } | |
4381 | } | |
c906108c SS |
4382 | } |
4383 | ||
43f3e411 | 4384 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 4385 | { |
43f3e411 | 4386 | bv = COMPUNIT_BLOCKVECTOR (cust); |
d50bd42b DE |
4387 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
4388 | { | |
d50bd42b DE |
4389 | b = BLOCKVECTOR_BLOCK (bv, i); |
4390 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4391 | { | |
08be3fe3 | 4392 | struct symtab *real_symtab = symbol_symtab (sym); |
d50bd42b DE |
4393 | |
4394 | QUIT; | |
4395 | ||
fbd9ab74 JK |
4396 | /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be |
4397 | a substring of symtab_to_fullname as it may contain "./" etc. */ | |
4398 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4399 | || ((basenames_may_differ | |
4400 | || file_matches (lbasename (real_symtab->filename), | |
4401 | files, nfiles, 1)) | |
4402 | && file_matches (symtab_to_fullname (real_symtab), | |
4403 | files, nfiles, 0))) | |
2d7cc5c7 PA |
4404 | && ((!preg |
4405 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4406 | NULL, 0) == 0) | |
d50bd42b DE |
4407 | && ((kind == VARIABLES_DOMAIN |
4408 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4409 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4410 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4411 | /* LOC_CONST can be used for more than just enums, | |
4412 | e.g., c++ static const members. | |
4413 | We only want to skip enums here. */ | |
4414 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
01465b56 DE |
4415 | && (TYPE_CODE (SYMBOL_TYPE (sym)) |
4416 | == TYPE_CODE_ENUM))) | |
d50bd42b DE |
4417 | || (kind == FUNCTIONS_DOMAIN |
4418 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
4419 | || (kind == TYPES_DOMAIN | |
4420 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4421 | { | |
4422 | /* match */ | |
b9c04fb2 | 4423 | result.emplace_back (i, sym); |
d50bd42b DE |
4424 | } |
4425 | } | |
d50bd42b | 4426 | } |
c5aa993b | 4427 | } |
c906108c | 4428 | |
b9c04fb2 TT |
4429 | if (!result.empty ()) |
4430 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4431 | |
c906108c | 4432 | /* If there are no eyes, avoid all contact. I mean, if there are |
01465b56 | 4433 | no debug symbols, then add matching minsyms. */ |
c906108c | 4434 | |
422d65e7 | 4435 | if (found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
c906108c SS |
4436 | { |
4437 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 4438 | { |
89295b4d PP |
4439 | QUIT; |
4440 | ||
422d65e7 DE |
4441 | if (msymbol->created_by_gdb) |
4442 | continue; | |
4443 | ||
d50bd42b DE |
4444 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4445 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4446 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4447 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 4448 | { |
2d7cc5c7 PA |
4449 | if (!preg || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, |
4450 | NULL, 0) == 0) | |
c5aa993b | 4451 | { |
422d65e7 DE |
4452 | /* For functions we can do a quick check of whether the |
4453 | symbol might be found via find_pc_symtab. */ | |
4454 | if (kind != FUNCTIONS_DOMAIN | |
43f3e411 DE |
4455 | || (find_pc_compunit_symtab |
4456 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL)) | |
c5aa993b | 4457 | { |
422d65e7 | 4458 | if (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 4459 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
d12307c1 | 4460 | .symbol == NULL) |
c5aa993b JM |
4461 | { |
4462 | /* match */ | |
b9c04fb2 | 4463 | result.emplace_back (i, msymbol, objfile); |
c5aa993b JM |
4464 | } |
4465 | } | |
4466 | } | |
4467 | } | |
4468 | } | |
c906108c SS |
4469 | } |
4470 | ||
b9c04fb2 | 4471 | return result; |
c906108c SS |
4472 | } |
4473 | ||
4474 | /* Helper function for symtab_symbol_info, this function uses | |
4475 | the data returned from search_symbols() to print information | |
c378eb4e MS |
4476 | regarding the match to gdb_stdout. */ |
4477 | ||
c906108c | 4478 | static void |
8903c50d | 4479 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4480 | struct symbol *sym, |
05cba821 | 4481 | int block, const char *last) |
c906108c | 4482 | { |
08be3fe3 | 4483 | struct symtab *s = symbol_symtab (sym); |
05cba821 JK |
4484 | const char *s_filename = symtab_to_filename_for_display (s); |
4485 | ||
4486 | if (last == NULL || filename_cmp (last, s_filename) != 0) | |
c906108c SS |
4487 | { |
4488 | fputs_filtered ("\nFile ", gdb_stdout); | |
05cba821 | 4489 | fputs_filtered (s_filename, gdb_stdout); |
c906108c SS |
4490 | fputs_filtered (":\n", gdb_stdout); |
4491 | } | |
4492 | ||
176620f1 | 4493 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4494 | printf_filtered ("static "); |
c5aa993b | 4495 | |
c378eb4e | 4496 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4497 | if (kind == TYPES_DOMAIN |
4498 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 4499 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4500 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4501 | else if (kind < TYPES_DOMAIN |
4502 | || (kind == TYPES_DOMAIN | |
4503 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4504 | { |
4505 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4506 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4507 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4508 | gdb_stdout, 0); |
c906108c SS |
4509 | |
4510 | printf_filtered (";\n"); | |
4511 | } | |
c906108c SS |
4512 | } |
4513 | ||
4514 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4515 | for non-debugging symbols to gdb_stdout. */ |
4516 | ||
c906108c | 4517 | static void |
7c7b6655 | 4518 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4519 | { |
7c7b6655 | 4520 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4521 | char *tmp; |
4522 | ||
d80b854b | 4523 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4524 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4525 | & (CORE_ADDR) 0xffffffff, |
4526 | 8); | |
3ac4495a | 4527 | else |
77e371c0 | 4528 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4529 | 16); |
3ac4495a | 4530 | printf_filtered ("%s %s\n", |
efd66ac6 | 4531 | tmp, MSYMBOL_PRINT_NAME (msymbol.minsym)); |
c906108c SS |
4532 | } |
4533 | ||
4534 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4535 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4536 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4537 | matches. */ |
4538 | ||
c906108c | 4539 | static void |
0b39b52e | 4540 | symtab_symbol_info (const char *regexp, enum search_domain kind, int from_tty) |
c906108c | 4541 | { |
bc043ef3 | 4542 | static const char * const classnames[] = |
e8930875 | 4543 | {"variable", "function", "type"}; |
05cba821 | 4544 | const char *last_filename = NULL; |
c906108c SS |
4545 | int first = 1; |
4546 | ||
e8930875 JK |
4547 | gdb_assert (kind <= TYPES_DOMAIN); |
4548 | ||
c378eb4e | 4549 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
b9c04fb2 | 4550 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, 0, NULL); |
c906108c | 4551 | |
ca242aad YQ |
4552 | if (regexp != NULL) |
4553 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4554 | classnames[kind], regexp); | |
4555 | else | |
4556 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
c906108c | 4557 | |
b9c04fb2 | 4558 | for (const symbol_search &p : symbols) |
c906108c SS |
4559 | { |
4560 | QUIT; | |
4561 | ||
b9c04fb2 | 4562 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4563 | { |
4564 | if (first) | |
4565 | { | |
ca242aad | 4566 | printf_filtered (_("\nNon-debugging symbols:\n")); |
c5aa993b JM |
4567 | first = 0; |
4568 | } | |
b9c04fb2 | 4569 | print_msymbol_info (p.msymbol); |
c5aa993b | 4570 | } |
c906108c | 4571 | else |
c5aa993b JM |
4572 | { |
4573 | print_symbol_info (kind, | |
b9c04fb2 TT |
4574 | p.symbol, |
4575 | p.block, | |
c5aa993b | 4576 | last_filename); |
d01060f0 | 4577 | last_filename |
b9c04fb2 | 4578 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4579 | } |
c906108c | 4580 | } |
c906108c SS |
4581 | } |
4582 | ||
0b39b52e TT |
4583 | static void |
4584 | info_variables_command (const char *regexp, int from_tty) | |
4585 | { | |
4586 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); | |
4587 | } | |
4588 | ||
c906108c | 4589 | static void |
1d12d88f | 4590 | info_functions_command (const char *regexp, int from_tty) |
c906108c | 4591 | { |
176620f1 | 4592 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
4593 | } |
4594 | ||
357e46e7 | 4595 | |
c906108c | 4596 | static void |
1d12d88f | 4597 | info_types_command (const char *regexp, int from_tty) |
c906108c | 4598 | { |
176620f1 | 4599 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
4600 | } |
4601 | ||
c378eb4e | 4602 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4603 | |
8b93c638 | 4604 | void |
fba45db2 | 4605 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4606 | { |
4607 | rbreak_command (regexp, from_tty); | |
4608 | } | |
8926118c | 4609 | |
c906108c | 4610 | static void |
0b39b52e | 4611 | rbreak_command (const char *regexp, int from_tty) |
c906108c | 4612 | { |
c80049d3 | 4613 | std::string string; |
96142726 TT |
4614 | const char **files = NULL; |
4615 | const char *file_name; | |
8bd10a10 | 4616 | int nfiles = 0; |
c906108c | 4617 | |
8bd10a10 CM |
4618 | if (regexp) |
4619 | { | |
0b39b52e | 4620 | const char *colon = strchr (regexp, ':'); |
433759f7 | 4621 | |
8bd10a10 CM |
4622 | if (colon && *(colon + 1) != ':') |
4623 | { | |
4624 | int colon_index; | |
96142726 | 4625 | char *local_name; |
8bd10a10 CM |
4626 | |
4627 | colon_index = colon - regexp; | |
224c3ddb | 4628 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
4629 | memcpy (local_name, regexp, colon_index); |
4630 | local_name[colon_index--] = 0; | |
4631 | while (isspace (local_name[colon_index])) | |
4632 | local_name[colon_index--] = 0; | |
4633 | file_name = local_name; | |
8bd10a10 CM |
4634 | files = &file_name; |
4635 | nfiles = 1; | |
529480d0 | 4636 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4637 | } |
4638 | } | |
4639 | ||
b9c04fb2 TT |
4640 | std::vector<symbol_search> symbols = search_symbols (regexp, |
4641 | FUNCTIONS_DOMAIN, | |
4642 | nfiles, files); | |
c906108c | 4643 | |
c80049d3 | 4644 | scoped_rbreak_breakpoints finalize; |
b9c04fb2 | 4645 | for (const symbol_search &p : symbols) |
c906108c | 4646 | { |
b9c04fb2 | 4647 | if (p.msymbol.minsym == NULL) |
c5aa993b | 4648 | { |
b9c04fb2 | 4649 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 4650 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 | 4651 | |
c80049d3 TT |
4652 | string = string_printf ("%s:'%s'", fullname, |
4653 | SYMBOL_LINKAGE_NAME (p.symbol)); | |
4654 | break_command (&string[0], from_tty); | |
176620f1 | 4655 | print_symbol_info (FUNCTIONS_DOMAIN, |
b9c04fb2 TT |
4656 | p.symbol, |
4657 | p.block, | |
d01060f0 | 4658 | symtab_to_filename_for_display (symtab)); |
c5aa993b | 4659 | } |
c906108c | 4660 | else |
c5aa993b | 4661 | { |
c80049d3 TT |
4662 | string = string_printf ("'%s'", |
4663 | MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); | |
6214f497 | 4664 | |
c80049d3 | 4665 | break_command (&string[0], from_tty); |
c5aa993b | 4666 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 4667 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 4668 | } |
c906108c | 4669 | } |
c906108c | 4670 | } |
c906108c | 4671 | \f |
c5aa993b | 4672 | |
c62446b1 | 4673 | /* Evaluate if SYMNAME matches LOOKUP_NAME. */ |
1976171a JK |
4674 | |
4675 | static int | |
c62446b1 | 4676 | compare_symbol_name (const char *symbol_name, language symbol_language, |
b5ec771e | 4677 | const lookup_name_info &lookup_name, |
b5ec771e PA |
4678 | completion_match_result &match_res) |
4679 | { | |
4680 | const language_defn *lang; | |
4681 | ||
4682 | /* If we're completing for an expression and the symbol doesn't have | |
4683 | an explicit language set, fallback to the current language. Ada | |
4684 | minimal symbols won't have their language set to Ada, for | |
4685 | example, and if we compared using the default/C-like matcher, | |
4686 | then when completing e.g., symbols in a package named "pck", we'd | |
4687 | match internal Ada symbols like "pckS", which are invalid in an | |
4688 | Ada expression, unless you wrap them in '<' '>' to request a | |
4689 | verbatim match. */ | |
4690 | if (symbol_language == language_auto | |
4691 | && lookup_name.match_type () == symbol_name_match_type::EXPRESSION) | |
4692 | lang = current_language; | |
4693 | else | |
4694 | lang = language_def (symbol_language); | |
1976171a | 4695 | |
b5ec771e PA |
4696 | symbol_name_matcher_ftype *name_match |
4697 | = language_get_symbol_name_matcher (lang, lookup_name); | |
1976171a | 4698 | |
a207cff2 | 4699 | return name_match (symbol_name, lookup_name, &match_res); |
1976171a JK |
4700 | } |
4701 | ||
b5ec771e | 4702 | /* See symtab.h. */ |
c906108c | 4703 | |
b5ec771e | 4704 | void |
eb3ff9a5 | 4705 | completion_list_add_name (completion_tracker &tracker, |
b5ec771e | 4706 | language symbol_language, |
eb3ff9a5 | 4707 | const char *symname, |
b5ec771e | 4708 | const lookup_name_info &lookup_name, |
0d5cff50 | 4709 | const char *text, const char *word) |
c906108c | 4710 | { |
b5ec771e PA |
4711 | completion_match_result &match_res |
4712 | = tracker.reset_completion_match_result (); | |
4713 | ||
c378eb4e | 4714 | /* Clip symbols that cannot match. */ |
c62446b1 | 4715 | if (!compare_symbol_name (symname, symbol_language, lookup_name, match_res)) |
1976171a | 4716 | return; |
c906108c | 4717 | |
b5ec771e PA |
4718 | /* Refresh SYMNAME from the match string. It's potentially |
4719 | different depending on language. (E.g., on Ada, the match may be | |
4720 | the encoded symbol name wrapped in "<>"). */ | |
4721 | symname = match_res.match.match (); | |
4722 | gdb_assert (symname != NULL); | |
4723 | ||
c906108c | 4724 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4725 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4726 | |
4727 | { | |
60a20c19 PA |
4728 | gdb::unique_xmalloc_ptr<char> completion |
4729 | = make_completion_match_str (symname, text, word); | |
ef0b411a | 4730 | |
a207cff2 PA |
4731 | /* Here we pass the match-for-lcd object to add_completion. Some |
4732 | languages match the user text against substrings of symbol | |
4733 | names in some cases. E.g., in C++, "b push_ba" completes to | |
4734 | "std::vector::push_back", "std::string::push_back", etc., and | |
4735 | in this case we want the completion lowest common denominator | |
4736 | to be "push_back" instead of "std::". */ | |
4737 | tracker.add_completion (std::move (completion), | |
a22ecf70 | 4738 | &match_res.match_for_lcd, text, word); |
c906108c SS |
4739 | } |
4740 | } | |
4741 | ||
6da67eb1 PA |
4742 | /* completion_list_add_name wrapper for struct symbol. */ |
4743 | ||
4744 | static void | |
eb3ff9a5 PA |
4745 | completion_list_add_symbol (completion_tracker &tracker, |
4746 | symbol *sym, | |
b5ec771e | 4747 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4748 | const char *text, const char *word) |
4749 | { | |
b5ec771e PA |
4750 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
4751 | SYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4752 | lookup_name, text, word); |
6da67eb1 PA |
4753 | } |
4754 | ||
4755 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
4756 | ||
4757 | static void | |
eb3ff9a5 PA |
4758 | completion_list_add_msymbol (completion_tracker &tracker, |
4759 | minimal_symbol *sym, | |
b5ec771e | 4760 | const lookup_name_info &lookup_name, |
6da67eb1 PA |
4761 | const char *text, const char *word) |
4762 | { | |
b5ec771e PA |
4763 | completion_list_add_name (tracker, MSYMBOL_LANGUAGE (sym), |
4764 | MSYMBOL_NATURAL_NAME (sym), | |
1b026119 | 4765 | lookup_name, text, word); |
6da67eb1 PA |
4766 | } |
4767 | ||
b5ec771e | 4768 | |
69636828 AF |
4769 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4770 | again and feed all the selectors into the mill. */ | |
4771 | ||
4772 | static void | |
eb3ff9a5 PA |
4773 | completion_list_objc_symbol (completion_tracker &tracker, |
4774 | struct minimal_symbol *msymbol, | |
b5ec771e | 4775 | const lookup_name_info &lookup_name, |
0d5cff50 | 4776 | const char *text, const char *word) |
69636828 AF |
4777 | { |
4778 | static char *tmp = NULL; | |
4779 | static unsigned int tmplen = 0; | |
9af17804 | 4780 | |
0d5cff50 | 4781 | const char *method, *category, *selector; |
69636828 | 4782 | char *tmp2 = NULL; |
9af17804 | 4783 | |
efd66ac6 | 4784 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
4785 | |
4786 | /* Is it a method? */ | |
4787 | if ((method[0] != '-') && (method[0] != '+')) | |
4788 | return; | |
4789 | ||
1b026119 | 4790 | if (text[0] == '[') |
69636828 | 4791 | /* Complete on shortened method method. */ |
b5ec771e PA |
4792 | completion_list_add_name (tracker, language_objc, |
4793 | method + 1, | |
4794 | lookup_name, | |
1b026119 | 4795 | text, word); |
9af17804 | 4796 | |
69636828 AF |
4797 | while ((strlen (method) + 1) >= tmplen) |
4798 | { | |
4799 | if (tmplen == 0) | |
4800 | tmplen = 1024; | |
4801 | else | |
4802 | tmplen *= 2; | |
224c3ddb | 4803 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
4804 | } |
4805 | selector = strchr (method, ' '); | |
4806 | if (selector != NULL) | |
4807 | selector++; | |
9af17804 | 4808 | |
69636828 | 4809 | category = strchr (method, '('); |
9af17804 | 4810 | |
69636828 AF |
4811 | if ((category != NULL) && (selector != NULL)) |
4812 | { | |
4813 | memcpy (tmp, method, (category - method)); | |
4814 | tmp[category - method] = ' '; | |
4815 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
b5ec771e | 4816 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 PA |
4817 | lookup_name, text, word); |
4818 | if (text[0] == '[') | |
b5ec771e | 4819 | completion_list_add_name (tracker, language_objc, tmp + 1, |
1b026119 | 4820 | lookup_name, text, word); |
69636828 | 4821 | } |
9af17804 | 4822 | |
69636828 AF |
4823 | if (selector != NULL) |
4824 | { | |
4825 | /* Complete on selector only. */ | |
4826 | strcpy (tmp, selector); | |
4827 | tmp2 = strchr (tmp, ']'); | |
4828 | if (tmp2 != NULL) | |
4829 | *tmp2 = '\0'; | |
9af17804 | 4830 | |
b5ec771e | 4831 | completion_list_add_name (tracker, language_objc, tmp, |
1b026119 | 4832 | lookup_name, text, word); |
69636828 AF |
4833 | } |
4834 | } | |
4835 | ||
4836 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 4837 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 4838 | |
6f937416 PA |
4839 | static const char * |
4840 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
4841 | { |
4842 | for (; p > text; --p) | |
4843 | { | |
4844 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
4845 | continue; | |
4846 | else | |
4847 | { | |
4848 | if ((current_language->la_language == language_objc)) | |
4849 | { | |
c378eb4e | 4850 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
4851 | continue; |
4852 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 4853 | p -= 2; /* Beginning of a method name. */ |
69636828 | 4854 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 4855 | { /* Might be part of a method name. */ |
6f937416 | 4856 | const char *t = p; |
69636828 AF |
4857 | |
4858 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
4859 | that we are in the middle of a method name. However, | |
4860 | finding "-[" or "+[" should be pretty un-ambiguous. | |
4861 | Unfortunately we have to find it now to decide. */ | |
4862 | ||
4863 | while (t > text) | |
4864 | if (isalnum (t[-1]) || t[-1] == '_' || | |
4865 | t[-1] == ' ' || t[-1] == ':' || | |
4866 | t[-1] == '(' || t[-1] == ')') | |
4867 | --t; | |
4868 | else | |
4869 | break; | |
4870 | ||
4871 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
4872 | p = t - 2; /* Method name detected. */ |
4873 | /* Else we leave with p unchanged. */ | |
69636828 AF |
4874 | } |
4875 | } | |
4876 | break; | |
4877 | } | |
4878 | } | |
4879 | return p; | |
4880 | } | |
4881 | ||
edb3359d | 4882 | static void |
eb3ff9a5 PA |
4883 | completion_list_add_fields (completion_tracker &tracker, |
4884 | struct symbol *sym, | |
b5ec771e | 4885 | const lookup_name_info &lookup_name, |
eb3ff9a5 | 4886 | const char *text, const char *word) |
edb3359d DJ |
4887 | { |
4888 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4889 | { | |
4890 | struct type *t = SYMBOL_TYPE (sym); | |
4891 | enum type_code c = TYPE_CODE (t); | |
4892 | int j; | |
4893 | ||
4894 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
4895 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
4896 | if (TYPE_FIELD_NAME (t, j)) | |
b5ec771e PA |
4897 | completion_list_add_name (tracker, SYMBOL_LANGUAGE (sym), |
4898 | TYPE_FIELD_NAME (t, j), | |
1b026119 | 4899 | lookup_name, text, word); |
edb3359d DJ |
4900 | } |
4901 | } | |
4902 | ||
f9d67a22 PA |
4903 | /* See symtab.h. */ |
4904 | ||
4905 | bool | |
4906 | symbol_is_function_or_method (symbol *sym) | |
4907 | { | |
4908 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) | |
4909 | { | |
4910 | case TYPE_CODE_FUNC: | |
4911 | case TYPE_CODE_METHOD: | |
4912 | return true; | |
4913 | default: | |
4914 | return false; | |
4915 | } | |
4916 | } | |
4917 | ||
4918 | /* See symtab.h. */ | |
4919 | ||
4920 | bool | |
4921 | symbol_is_function_or_method (minimal_symbol *msymbol) | |
4922 | { | |
4923 | switch (MSYMBOL_TYPE (msymbol)) | |
4924 | { | |
4925 | case mst_text: | |
4926 | case mst_text_gnu_ifunc: | |
4927 | case mst_solib_trampoline: | |
4928 | case mst_file_text: | |
4929 | return true; | |
4930 | default: | |
4931 | return false; | |
4932 | } | |
4933 | } | |
4934 | ||
e11c72c7 GB |
4935 | /* Add matching symbols from SYMTAB to the current completion list. */ |
4936 | ||
4937 | static void | |
4938 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 4939 | completion_tracker &tracker, |
f9d67a22 | 4940 | complete_symbol_mode mode, |
b5ec771e | 4941 | const lookup_name_info &lookup_name, |
e11c72c7 GB |
4942 | const char *text, const char *word, |
4943 | enum type_code code) | |
4944 | { | |
4945 | struct symbol *sym; | |
4946 | const struct block *b; | |
4947 | struct block_iterator iter; | |
4948 | int i; | |
4949 | ||
ff6fa247 GB |
4950 | if (cust == NULL) |
4951 | return; | |
4952 | ||
e11c72c7 GB |
4953 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
4954 | { | |
4955 | QUIT; | |
4956 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
4957 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4958 | { | |
f9d67a22 PA |
4959 | if (completion_skip_symbol (mode, sym)) |
4960 | continue; | |
4961 | ||
e11c72c7 GB |
4962 | if (code == TYPE_CODE_UNDEF |
4963 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
4964 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 4965 | completion_list_add_symbol (tracker, sym, |
b5ec771e | 4966 | lookup_name, |
e11c72c7 GB |
4967 | text, word); |
4968 | } | |
4969 | } | |
4970 | } | |
4971 | ||
eb3ff9a5 PA |
4972 | void |
4973 | default_collect_symbol_completion_matches_break_on | |
b5ec771e PA |
4974 | (completion_tracker &tracker, complete_symbol_mode mode, |
4975 | symbol_name_match_type name_match_type, | |
eb3ff9a5 PA |
4976 | const char *text, const char *word, |
4977 | const char *break_on, enum type_code code) | |
c906108c | 4978 | { |
41d27058 JB |
4979 | /* Problem: All of the symbols have to be copied because readline |
4980 | frees them. I'm not going to worry about this; hopefully there | |
4981 | won't be that many. */ | |
4982 | ||
de4f826b | 4983 | struct symbol *sym; |
43f3e411 | 4984 | struct compunit_symtab *cust; |
de4f826b DC |
4985 | struct minimal_symbol *msymbol; |
4986 | struct objfile *objfile; | |
3977b71f | 4987 | const struct block *b; |
edb3359d | 4988 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 4989 | struct block_iterator iter; |
c906108c | 4990 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 4991 | const char *sym_text; |
c906108c | 4992 | |
41d27058 | 4993 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
4994 | if (mode == complete_symbol_mode::LINESPEC) |
4995 | sym_text = text; | |
4996 | else | |
c906108c | 4997 | { |
6f937416 | 4998 | const char *p; |
c906108c | 4999 | char quote_found; |
6f937416 | 5000 | const char *quote_pos = NULL; |
c906108c SS |
5001 | |
5002 | /* First see if this is a quoted string. */ | |
5003 | quote_found = '\0'; | |
5004 | for (p = text; *p != '\0'; ++p) | |
5005 | { | |
5006 | if (quote_found != '\0') | |
5007 | { | |
5008 | if (*p == quote_found) | |
5009 | /* Found close quote. */ | |
5010 | quote_found = '\0'; | |
5011 | else if (*p == '\\' && p[1] == quote_found) | |
5012 | /* A backslash followed by the quote character | |
c5aa993b | 5013 | doesn't end the string. */ |
c906108c SS |
5014 | ++p; |
5015 | } | |
5016 | else if (*p == '\'' || *p == '"') | |
5017 | { | |
5018 | quote_found = *p; | |
5019 | quote_pos = p; | |
5020 | } | |
5021 | } | |
5022 | if (quote_found == '\'') | |
5023 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5024 | sym_text = quote_pos + 1; | |
5025 | else if (quote_found == '"') | |
5026 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5027 | to complete it any other way. */ |
c94fdfd0 | 5028 | { |
ef0b411a | 5029 | return; |
c94fdfd0 | 5030 | } |
c906108c SS |
5031 | else |
5032 | { | |
5033 | /* It is not a quoted string. Break it based on the characters | |
5034 | which are in symbols. */ | |
5035 | while (p > text) | |
5036 | { | |
95699ff0 | 5037 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5038 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5039 | --p; |
5040 | else | |
5041 | break; | |
5042 | } | |
5043 | sym_text = p; | |
5044 | } | |
5045 | } | |
5046 | ||
1b026119 | 5047 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5048 | |
c906108c SS |
5049 | /* At this point scan through the misc symbol vectors and add each |
5050 | symbol you find to the list. Eventually we want to ignore | |
5051 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5052 | handled by the psymtab code below). */ |
c906108c | 5053 | |
2f68a895 TT |
5054 | if (code == TYPE_CODE_UNDEF) |
5055 | { | |
5056 | ALL_MSYMBOLS (objfile, msymbol) | |
5057 | { | |
5058 | QUIT; | |
9af17804 | 5059 | |
f9d67a22 PA |
5060 | if (completion_skip_symbol (mode, msymbol)) |
5061 | continue; | |
5062 | ||
b5ec771e | 5063 | completion_list_add_msymbol (tracker, msymbol, lookup_name, |
1b026119 | 5064 | sym_text, word); |
eb3ff9a5 | 5065 | |
b5ec771e | 5066 | completion_list_objc_symbol (tracker, msymbol, lookup_name, |
1b026119 | 5067 | sym_text, word); |
2f68a895 TT |
5068 | } |
5069 | } | |
c906108c | 5070 | |
e11c72c7 GB |
5071 | /* Add completions for all currently loaded symbol tables. */ |
5072 | ALL_COMPUNITS (objfile, cust) | |
f9d67a22 | 5073 | add_symtab_completions (cust, tracker, mode, lookup_name, |
1b026119 | 5074 | sym_text, word, code); |
e11c72c7 | 5075 | |
14bc53a8 PA |
5076 | /* Look through the partial symtabs for all symbols which begin by |
5077 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
5078 | expand_symtabs_matching (NULL, | |
b5ec771e PA |
5079 | lookup_name, |
5080 | NULL, | |
14bc53a8 PA |
5081 | [&] (compunit_symtab *symtab) /* expansion notify */ |
5082 | { | |
5083 | add_symtab_completions (symtab, | |
f9d67a22 | 5084 | tracker, mode, lookup_name, |
1b026119 | 5085 | sym_text, word, code); |
14bc53a8 PA |
5086 | }, |
5087 | ALL_DOMAIN); | |
e11c72c7 | 5088 | |
c906108c | 5089 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5090 | complete on local vars). Also catch fields of types defined in |
5091 | this places which match our text string. Only complete on types | |
c378eb4e | 5092 | visible from current context. */ |
edb3359d DJ |
5093 | |
5094 | b = get_selected_block (0); | |
5095 | surrounding_static_block = block_static_block (b); | |
5096 | surrounding_global_block = block_global_block (b); | |
5097 | if (surrounding_static_block != NULL) | |
5098 | while (b != surrounding_static_block) | |
5099 | { | |
5100 | QUIT; | |
c906108c | 5101 | |
edb3359d DJ |
5102 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5103 | { | |
2f68a895 TT |
5104 | if (code == TYPE_CODE_UNDEF) |
5105 | { | |
b5ec771e | 5106 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5107 | sym_text, word); |
b5ec771e | 5108 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5109 | sym_text, word); |
2f68a895 TT |
5110 | } |
5111 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5112 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
b5ec771e | 5113 | completion_list_add_symbol (tracker, sym, lookup_name, |
1b026119 | 5114 | sym_text, word); |
edb3359d | 5115 | } |
c5aa993b | 5116 | |
edb3359d DJ |
5117 | /* Stop when we encounter an enclosing function. Do not stop for |
5118 | non-inlined functions - the locals of the enclosing function | |
5119 | are in scope for a nested function. */ | |
5120 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5121 | break; | |
5122 | b = BLOCK_SUPERBLOCK (b); | |
5123 | } | |
c906108c | 5124 | |
edb3359d | 5125 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5126 | |
2f68a895 TT |
5127 | if (code == TYPE_CODE_UNDEF) |
5128 | { | |
5129 | if (surrounding_static_block != NULL) | |
5130 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
b5ec771e | 5131 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5132 | sym_text, word); |
edb3359d | 5133 | |
2f68a895 TT |
5134 | if (surrounding_global_block != NULL) |
5135 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
b5ec771e | 5136 | completion_list_add_fields (tracker, sym, lookup_name, |
1b026119 | 5137 | sym_text, word); |
2f68a895 | 5138 | } |
c906108c | 5139 | |
2f68a895 TT |
5140 | /* Skip macros if we are completing a struct tag -- arguable but |
5141 | usually what is expected. */ | |
5142 | if (current_language->la_macro_expansion == macro_expansion_c | |
5143 | && code == TYPE_CODE_UNDEF) | |
9a044a89 TT |
5144 | { |
5145 | struct macro_scope *scope; | |
9a044a89 | 5146 | |
14bc53a8 PA |
5147 | /* This adds a macro's name to the current completion list. */ |
5148 | auto add_macro_name = [&] (const char *macro_name, | |
5149 | const macro_definition *, | |
5150 | macro_source_file *, | |
5151 | int) | |
5152 | { | |
1b026119 PA |
5153 | completion_list_add_name (tracker, language_c, macro_name, |
5154 | lookup_name, sym_text, word); | |
14bc53a8 PA |
5155 | }; |
5156 | ||
9a044a89 TT |
5157 | /* Add any macros visible in the default scope. Note that this |
5158 | may yield the occasional wrong result, because an expression | |
5159 | might be evaluated in a scope other than the default. For | |
5160 | example, if the user types "break file:line if <TAB>", the | |
5161 | resulting expression will be evaluated at "file:line" -- but | |
5162 | at there does not seem to be a way to detect this at | |
5163 | completion time. */ | |
5164 | scope = default_macro_scope (); | |
5165 | if (scope) | |
5166 | { | |
5167 | macro_for_each_in_scope (scope->file, scope->line, | |
14bc53a8 | 5168 | add_macro_name); |
9a044a89 TT |
5169 | xfree (scope); |
5170 | } | |
5171 | ||
5172 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5173 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5174 | } |
ef0b411a GB |
5175 | } |
5176 | ||
eb3ff9a5 PA |
5177 | void |
5178 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5179 | complete_symbol_mode mode, |
b5ec771e | 5180 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5181 | const char *text, const char *word, |
5182 | enum type_code code) | |
f55ee35c | 5183 | { |
c6756f62 | 5184 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 5185 | name_match_type, |
eb3ff9a5 PA |
5186 | text, word, "", |
5187 | code); | |
f55ee35c JK |
5188 | } |
5189 | ||
eb3ff9a5 PA |
5190 | /* Collect all symbols (regardless of class) which begin by matching |
5191 | TEXT. */ | |
41d27058 | 5192 | |
eb3ff9a5 PA |
5193 | void |
5194 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5195 | complete_symbol_mode mode, |
b5ec771e | 5196 | symbol_name_match_type name_match_type, |
eb3ff9a5 | 5197 | const char *text, const char *word) |
41d27058 | 5198 | { |
c6756f62 | 5199 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5200 | name_match_type, |
eb3ff9a5 PA |
5201 | text, word, |
5202 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5203 | } |
5204 | ||
eb3ff9a5 PA |
5205 | /* Like collect_symbol_completion_matches, but only collect |
5206 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5207 | |
eb3ff9a5 PA |
5208 | void |
5209 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5210 | const char *text, const char *word, | |
5211 | enum type_code code) | |
2f68a895 | 5212 | { |
c6756f62 | 5213 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
b5ec771e | 5214 | symbol_name_match_type name_match_type = symbol_name_match_type::EXPRESSION; |
c6756f62 | 5215 | |
2f68a895 TT |
5216 | gdb_assert (code == TYPE_CODE_UNION |
5217 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5218 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5219 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
b5ec771e | 5220 | name_match_type, |
eb3ff9a5 | 5221 | text, word, code); |
41d27058 JB |
5222 | } |
5223 | ||
eb3ff9a5 PA |
5224 | /* Like collect_symbol_completion_matches, but collects a list of |
5225 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5226 | |
eb3ff9a5 PA |
5227 | void |
5228 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5229 | complete_symbol_mode mode, |
b5ec771e | 5230 | symbol_name_match_type name_match_type, |
eb3ff9a5 PA |
5231 | const char *text, const char *word, |
5232 | const char *srcfile) | |
c94fdfd0 | 5233 | { |
c94fdfd0 | 5234 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5235 | const char *sym_text; |
c94fdfd0 EZ |
5236 | |
5237 | /* Now look for the symbol we are supposed to complete on. | |
5238 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5239 | if (mode == complete_symbol_mode::LINESPEC) |
5240 | sym_text = text; | |
5241 | else | |
c94fdfd0 | 5242 | { |
6f937416 | 5243 | const char *p; |
c94fdfd0 | 5244 | char quote_found; |
6f937416 | 5245 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5246 | |
5247 | /* First see if this is a quoted string. */ | |
5248 | quote_found = '\0'; | |
5249 | for (p = text; *p != '\0'; ++p) | |
5250 | { | |
5251 | if (quote_found != '\0') | |
5252 | { | |
5253 | if (*p == quote_found) | |
5254 | /* Found close quote. */ | |
5255 | quote_found = '\0'; | |
5256 | else if (*p == '\\' && p[1] == quote_found) | |
5257 | /* A backslash followed by the quote character | |
5258 | doesn't end the string. */ | |
5259 | ++p; | |
5260 | } | |
5261 | else if (*p == '\'' || *p == '"') | |
5262 | { | |
5263 | quote_found = *p; | |
5264 | quote_pos = p; | |
5265 | } | |
5266 | } | |
5267 | if (quote_found == '\'') | |
5268 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5269 | sym_text = quote_pos + 1; | |
5270 | else if (quote_found == '"') | |
5271 | /* A double-quoted string is never a symbol, nor does it make sense | |
5272 | to complete it any other way. */ | |
5273 | { | |
eb3ff9a5 | 5274 | return; |
c94fdfd0 EZ |
5275 | } |
5276 | else | |
5277 | { | |
69636828 AF |
5278 | /* Not a quoted string. */ |
5279 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5280 | } |
5281 | } | |
5282 | ||
1b026119 | 5283 | lookup_name_info lookup_name (sym_text, name_match_type, true); |
b5ec771e | 5284 | |
8f14146e PA |
5285 | /* Go through symtabs for SRCFILE and check the externs and statics |
5286 | for symbols which match. */ | |
5287 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5288 | { |
8f14146e | 5289 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
f9d67a22 | 5290 | tracker, mode, lookup_name, |
1b026119 | 5291 | sym_text, word, TYPE_CODE_UNDEF); |
8f14146e PA |
5292 | return false; |
5293 | }); | |
e27852be DE |
5294 | } |
5295 | ||
c94fdfd0 EZ |
5296 | /* A helper function for make_source_files_completion_list. It adds |
5297 | another file name to a list of possible completions, growing the | |
5298 | list as necessary. */ | |
5299 | ||
5300 | static void | |
6f937416 | 5301 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5302 | completion_list *list) |
c94fdfd0 | 5303 | { |
60a20c19 | 5304 | list->emplace_back (make_completion_match_str (fname, text, word)); |
c94fdfd0 EZ |
5305 | } |
5306 | ||
5307 | static int | |
5308 | not_interesting_fname (const char *fname) | |
5309 | { | |
5310 | static const char *illegal_aliens[] = { | |
5311 | "_globals_", /* inserted by coff_symtab_read */ | |
5312 | NULL | |
5313 | }; | |
5314 | int i; | |
5315 | ||
5316 | for (i = 0; illegal_aliens[i]; i++) | |
5317 | { | |
0ba1096a | 5318 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5319 | return 1; |
5320 | } | |
5321 | return 0; | |
5322 | } | |
5323 | ||
ccefe4c4 TT |
5324 | /* An object of this type is passed as the user_data argument to |
5325 | map_partial_symbol_filenames. */ | |
5326 | struct add_partial_filename_data | |
5327 | { | |
9fdc877b | 5328 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5329 | const char *text; |
5330 | const char *word; | |
ccefe4c4 | 5331 | int text_len; |
eb3ff9a5 | 5332 | completion_list *list; |
ccefe4c4 TT |
5333 | }; |
5334 | ||
5335 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5336 | |
ccefe4c4 | 5337 | static void |
2837d59e | 5338 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5339 | void *user_data) |
5340 | { | |
19ba03f4 SM |
5341 | struct add_partial_filename_data *data |
5342 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5343 | |
5344 | if (not_interesting_fname (filename)) | |
5345 | return; | |
bbf2f4df | 5346 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5347 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5348 | { |
5349 | /* This file matches for a completion; add it to the | |
5350 | current list of matches. */ | |
49c4e619 | 5351 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5352 | } |
5353 | else | |
5354 | { | |
5355 | const char *base_name = lbasename (filename); | |
433759f7 | 5356 | |
ccefe4c4 | 5357 | if (base_name != filename |
bbf2f4df | 5358 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5359 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5360 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5361 | } |
5362 | } | |
5363 | ||
eb3ff9a5 | 5364 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5365 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5366 | program. */ |
c94fdfd0 | 5367 | |
eb3ff9a5 | 5368 | completion_list |
6f937416 | 5369 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5370 | { |
43f3e411 | 5371 | struct compunit_symtab *cu; |
52f0bd74 | 5372 | struct symtab *s; |
52f0bd74 | 5373 | struct objfile *objfile; |
c94fdfd0 | 5374 | size_t text_len = strlen (text); |
eb3ff9a5 | 5375 | completion_list list; |
31889e00 | 5376 | const char *base_name; |
ccefe4c4 | 5377 | struct add_partial_filename_data datum; |
c94fdfd0 | 5378 | |
c94fdfd0 EZ |
5379 | if (!have_full_symbols () && !have_partial_symbols ()) |
5380 | return list; | |
5381 | ||
bbf2f4df | 5382 | filename_seen_cache filenames_seen; |
9fdc877b | 5383 | |
43f3e411 | 5384 | ALL_FILETABS (objfile, cu, s) |
c94fdfd0 EZ |
5385 | { |
5386 | if (not_interesting_fname (s->filename)) | |
5387 | continue; | |
bbf2f4df | 5388 | if (!filenames_seen.seen (s->filename) |
0ba1096a | 5389 | && filename_ncmp (s->filename, text, text_len) == 0) |
c94fdfd0 EZ |
5390 | { |
5391 | /* This file matches for a completion; add it to the current | |
5392 | list of matches. */ | |
49c4e619 | 5393 | add_filename_to_list (s->filename, text, word, &list); |
c94fdfd0 EZ |
5394 | } |
5395 | else | |
5396 | { | |
5397 | /* NOTE: We allow the user to type a base name when the | |
5398 | debug info records leading directories, but not the other | |
5399 | way around. This is what subroutines of breakpoint | |
5400 | command do when they parse file names. */ | |
31889e00 | 5401 | base_name = lbasename (s->filename); |
c94fdfd0 | 5402 | if (base_name != s->filename |
bbf2f4df | 5403 | && !filenames_seen.seen (base_name) |
0ba1096a | 5404 | && filename_ncmp (base_name, text, text_len) == 0) |
49c4e619 | 5405 | add_filename_to_list (base_name, text, word, &list); |
c94fdfd0 EZ |
5406 | } |
5407 | } | |
5408 | ||
bbf2f4df | 5409 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5410 | datum.text = text; |
5411 | datum.word = word; | |
5412 | datum.text_len = text_len; | |
5413 | datum.list = &list; | |
bb4142cf DE |
5414 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5415 | 0 /*need_fullname*/); | |
9fdc877b | 5416 | |
c94fdfd0 EZ |
5417 | return list; |
5418 | } | |
c906108c | 5419 | \f |
51cc5b07 | 5420 | /* Track MAIN */ |
32ac0d11 TT |
5421 | |
5422 | /* Return the "main_info" object for the current program space. If | |
5423 | the object has not yet been created, create it and fill in some | |
5424 | default values. */ | |
5425 | ||
5426 | static struct main_info * | |
5427 | get_main_info (void) | |
5428 | { | |
19ba03f4 SM |
5429 | struct main_info *info |
5430 | = (struct main_info *) program_space_data (current_program_space, | |
32ac0d11 TT |
5431 | main_progspace_key); |
5432 | ||
5433 | if (info == NULL) | |
5434 | { | |
3d548a53 TT |
5435 | /* It may seem strange to store the main name in the progspace |
5436 | and also in whatever objfile happens to see a main name in | |
5437 | its debug info. The reason for this is mainly historical: | |
5438 | gdb returned "main" as the name even if no function named | |
5439 | "main" was defined the program; and this approach lets us | |
5440 | keep compatibility. */ | |
32ac0d11 TT |
5441 | info = XCNEW (struct main_info); |
5442 | info->language_of_main = language_unknown; | |
5443 | set_program_space_data (current_program_space, main_progspace_key, | |
5444 | info); | |
5445 | } | |
5446 | ||
5447 | return info; | |
5448 | } | |
5449 | ||
5450 | /* A cleanup to destroy a struct main_info when a progspace is | |
5451 | destroyed. */ | |
5452 | ||
5453 | static void | |
5454 | main_info_cleanup (struct program_space *pspace, void *data) | |
5455 | { | |
19ba03f4 | 5456 | struct main_info *info = (struct main_info *) data; |
32ac0d11 TT |
5457 | |
5458 | if (info != NULL) | |
5459 | xfree (info->name_of_main); | |
5460 | xfree (info); | |
5461 | } | |
51cc5b07 | 5462 | |
3d548a53 | 5463 | static void |
9e6c82ad | 5464 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5465 | { |
32ac0d11 TT |
5466 | struct main_info *info = get_main_info (); |
5467 | ||
5468 | if (info->name_of_main != NULL) | |
51cc5b07 | 5469 | { |
32ac0d11 TT |
5470 | xfree (info->name_of_main); |
5471 | info->name_of_main = NULL; | |
5472 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5473 | } |
5474 | if (name != NULL) | |
5475 | { | |
32ac0d11 TT |
5476 | info->name_of_main = xstrdup (name); |
5477 | info->language_of_main = lang; | |
51cc5b07 AC |
5478 | } |
5479 | } | |
5480 | ||
ea53e89f JB |
5481 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5482 | accordingly. */ | |
5483 | ||
5484 | static void | |
5485 | find_main_name (void) | |
5486 | { | |
cd6c7346 | 5487 | const char *new_main_name; |
3d548a53 TT |
5488 | struct objfile *objfile; |
5489 | ||
5490 | /* First check the objfiles to see whether a debuginfo reader has | |
5491 | picked up the appropriate main name. Historically the main name | |
5492 | was found in a more or less random way; this approach instead | |
5493 | relies on the order of objfile creation -- which still isn't | |
5494 | guaranteed to get the correct answer, but is just probably more | |
5495 | accurate. */ | |
5496 | ALL_OBJFILES (objfile) | |
5497 | { | |
5498 | if (objfile->per_bfd->name_of_main != NULL) | |
5499 | { | |
5500 | set_main_name (objfile->per_bfd->name_of_main, | |
5501 | objfile->per_bfd->language_of_main); | |
5502 | return; | |
5503 | } | |
5504 | } | |
ea53e89f JB |
5505 | |
5506 | /* Try to see if the main procedure is in Ada. */ | |
5507 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5508 | be to add a new method in the language vector, and call this | |
5509 | method for each language until one of them returns a non-empty | |
5510 | name. This would allow us to remove this hard-coded call to | |
5511 | an Ada function. It is not clear that this is a better approach | |
5512 | at this point, because all methods need to be written in a way | |
c378eb4e | 5513 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5514 | important that a method does not return a wrong name for the main |
5515 | procedure if the main procedure is actually written in a different | |
5516 | language. It is easy to guaranty this with Ada, since we use a | |
5517 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5518 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5519 | be guarantied for languages such as C, for instance. This suggests |
5520 | that order of call for these methods becomes important, which means | |
5521 | a more complicated approach. */ | |
5522 | new_main_name = ada_main_name (); | |
5523 | if (new_main_name != NULL) | |
9af17804 | 5524 | { |
9e6c82ad | 5525 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5526 | return; |
5527 | } | |
5528 | ||
63778547 IB |
5529 | new_main_name = d_main_name (); |
5530 | if (new_main_name != NULL) | |
5531 | { | |
5532 | set_main_name (new_main_name, language_d); | |
5533 | return; | |
5534 | } | |
5535 | ||
a766d390 DE |
5536 | new_main_name = go_main_name (); |
5537 | if (new_main_name != NULL) | |
5538 | { | |
9e6c82ad | 5539 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5540 | return; |
5541 | } | |
5542 | ||
cd6c7346 PM |
5543 | new_main_name = pascal_main_name (); |
5544 | if (new_main_name != NULL) | |
9af17804 | 5545 | { |
9e6c82ad | 5546 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5547 | return; |
5548 | } | |
5549 | ||
ea53e89f JB |
5550 | /* The languages above didn't identify the name of the main procedure. |
5551 | Fallback to "main". */ | |
9e6c82ad | 5552 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5553 | } |
5554 | ||
51cc5b07 AC |
5555 | char * |
5556 | main_name (void) | |
5557 | { | |
32ac0d11 TT |
5558 | struct main_info *info = get_main_info (); |
5559 | ||
5560 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5561 | find_main_name (); |
5562 | ||
32ac0d11 | 5563 | return info->name_of_main; |
51cc5b07 AC |
5564 | } |
5565 | ||
9e6c82ad TT |
5566 | /* Return the language of the main function. If it is not known, |
5567 | return language_unknown. */ | |
5568 | ||
5569 | enum language | |
5570 | main_language (void) | |
5571 | { | |
32ac0d11 TT |
5572 | struct main_info *info = get_main_info (); |
5573 | ||
5574 | if (info->name_of_main == NULL) | |
5575 | find_main_name (); | |
5576 | ||
5577 | return info->language_of_main; | |
9e6c82ad TT |
5578 | } |
5579 | ||
ea53e89f JB |
5580 | /* Handle ``executable_changed'' events for the symtab module. */ |
5581 | ||
5582 | static void | |
781b42b0 | 5583 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5584 | { |
5585 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5586 | set_main_name (NULL, language_unknown); |
ea53e89f | 5587 | } |
51cc5b07 | 5588 | |
a6c727b2 DJ |
5589 | /* Return 1 if the supplied producer string matches the ARM RealView |
5590 | compiler (armcc). */ | |
5591 | ||
5592 | int | |
5593 | producer_is_realview (const char *producer) | |
5594 | { | |
5595 | static const char *const arm_idents[] = { | |
5596 | "ARM C Compiler, ADS", | |
5597 | "Thumb C Compiler, ADS", | |
5598 | "ARM C++ Compiler, ADS", | |
5599 | "Thumb C++ Compiler, ADS", | |
5600 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5601 | "ARM C/C++ Compiler, RVCT" | |
5602 | }; | |
5603 | int i; | |
5604 | ||
5605 | if (producer == NULL) | |
5606 | return 0; | |
5607 | ||
5608 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 5609 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
5610 | return 1; |
5611 | ||
5612 | return 0; | |
5613 | } | |
ed0616c6 | 5614 | |
f1e6e072 TT |
5615 | \f |
5616 | ||
5617 | /* The next index to hand out in response to a registration request. */ | |
5618 | ||
5619 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5620 | ||
5621 | /* The maximum number of "aclass" registrations we support. This is | |
5622 | constant for convenience. */ | |
5623 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5624 | ||
5625 | /* The objects representing the various "aclass" values. The elements | |
5626 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5627 | elements are those registered at gdb initialization time. */ | |
5628 | ||
5629 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5630 | ||
5631 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5632 | so that it can be const. */ | |
5633 | ||
5634 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5635 | ||
5636 | /* Make sure we saved enough room in struct symbol. */ | |
5637 | ||
5638 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5639 | ||
5640 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5641 | is the ops vector associated with this index. This returns the new | |
5642 | index, which should be used as the aclass_index field for symbols | |
5643 | of this type. */ | |
5644 | ||
5645 | int | |
5646 | register_symbol_computed_impl (enum address_class aclass, | |
5647 | const struct symbol_computed_ops *ops) | |
5648 | { | |
5649 | int result = next_aclass_value++; | |
5650 | ||
5651 | gdb_assert (aclass == LOC_COMPUTED); | |
5652 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5653 | symbol_impl[result].aclass = aclass; | |
5654 | symbol_impl[result].ops_computed = ops; | |
5655 | ||
24d6c2a0 TT |
5656 | /* Sanity check OPS. */ |
5657 | gdb_assert (ops != NULL); | |
5658 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
5659 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 5660 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
5661 | gdb_assert (ops->read_variable != NULL); |
5662 | ||
f1e6e072 TT |
5663 | return result; |
5664 | } | |
5665 | ||
5666 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
5667 | OPS is the ops vector associated with this index. This returns the | |
5668 | new index, which should be used as the aclass_index field for symbols | |
5669 | of this type. */ | |
5670 | ||
5671 | int | |
5672 | register_symbol_block_impl (enum address_class aclass, | |
5673 | const struct symbol_block_ops *ops) | |
5674 | { | |
5675 | int result = next_aclass_value++; | |
5676 | ||
5677 | gdb_assert (aclass == LOC_BLOCK); | |
5678 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5679 | symbol_impl[result].aclass = aclass; | |
5680 | symbol_impl[result].ops_block = ops; | |
5681 | ||
5682 | /* Sanity check OPS. */ | |
5683 | gdb_assert (ops != NULL); | |
5684 | gdb_assert (ops->find_frame_base_location != NULL); | |
5685 | ||
5686 | return result; | |
5687 | } | |
5688 | ||
5689 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
5690 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
5691 | this index. This returns the new index, which should be used as | |
5692 | the aclass_index field for symbols of this type. */ | |
5693 | ||
5694 | int | |
5695 | register_symbol_register_impl (enum address_class aclass, | |
5696 | const struct symbol_register_ops *ops) | |
5697 | { | |
5698 | int result = next_aclass_value++; | |
5699 | ||
5700 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
5701 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5702 | symbol_impl[result].aclass = aclass; | |
5703 | symbol_impl[result].ops_register = ops; | |
5704 | ||
5705 | return result; | |
5706 | } | |
5707 | ||
5708 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
5709 | address_class. */ | |
5710 | ||
5711 | static void | |
5712 | initialize_ordinary_address_classes (void) | |
5713 | { | |
5714 | int i; | |
5715 | ||
5716 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 5717 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
5718 | } |
5719 | ||
5720 | \f | |
5721 | ||
1994afbf DE |
5722 | /* Helper function to initialize the fields of an objfile-owned symbol. |
5723 | It assumed that *SYM is already all zeroes. */ | |
5724 | ||
5725 | static void | |
5726 | initialize_objfile_symbol_1 (struct symbol *sym) | |
5727 | { | |
5728 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
5729 | SYMBOL_SECTION (sym) = -1; | |
5730 | } | |
5731 | ||
5732 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
5733 | |
5734 | void | |
38bf1463 | 5735 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
5736 | { |
5737 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 5738 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
5739 | } |
5740 | ||
5741 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
5742 | obstack. */ | |
5743 | ||
5744 | struct symbol * | |
5745 | allocate_symbol (struct objfile *objfile) | |
5746 | { | |
5747 | struct symbol *result; | |
5748 | ||
5749 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 5750 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5751 | |
5752 | return result; | |
5753 | } | |
5754 | ||
5755 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
5756 | obstack. */ | |
5757 | ||
5758 | struct template_symbol * | |
5759 | allocate_template_symbol (struct objfile *objfile) | |
5760 | { | |
5761 | struct template_symbol *result; | |
5762 | ||
5763 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
68e745e3 | 5764 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5765 | |
5766 | return result; | |
5767 | } | |
5768 | ||
08be3fe3 DE |
5769 | /* See symtab.h. */ |
5770 | ||
5771 | struct objfile * | |
5772 | symbol_objfile (const struct symbol *symbol) | |
5773 | { | |
1994afbf DE |
5774 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5775 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
5776 | } |
5777 | ||
5778 | /* See symtab.h. */ | |
5779 | ||
5780 | struct gdbarch * | |
5781 | symbol_arch (const struct symbol *symbol) | |
5782 | { | |
1994afbf DE |
5783 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
5784 | return symbol->owner.arch; | |
5785 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
5786 | } |
5787 | ||
5788 | /* See symtab.h. */ | |
5789 | ||
5790 | struct symtab * | |
5791 | symbol_symtab (const struct symbol *symbol) | |
5792 | { | |
1994afbf DE |
5793 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5794 | return symbol->owner.symtab; | |
08be3fe3 DE |
5795 | } |
5796 | ||
5797 | /* See symtab.h. */ | |
5798 | ||
5799 | void | |
5800 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
5801 | { | |
1994afbf DE |
5802 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5803 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
5804 | } |
5805 | ||
e623cf5d TT |
5806 | \f |
5807 | ||
c906108c | 5808 | void |
fba45db2 | 5809 | _initialize_symtab (void) |
c906108c | 5810 | { |
f1e6e072 TT |
5811 | initialize_ordinary_address_classes (); |
5812 | ||
32ac0d11 TT |
5813 | main_progspace_key |
5814 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
5815 | ||
f57d2163 DE |
5816 | symbol_cache_key |
5817 | = register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup); | |
5818 | ||
11db9430 | 5819 | add_info ("variables", info_variables_command, _("\ |
1bedd215 | 5820 | All global and static variable names, or those matching REGEXP.")); |
c906108c | 5821 | if (dbx_commands) |
11db9430 | 5822 | add_com ("whereis", class_info, info_variables_command, _("\ |
1bedd215 | 5823 | All global and static variable names, or those matching REGEXP.")); |
c906108c | 5824 | |
11db9430 | 5825 | add_info ("functions", info_functions_command, |
1bedd215 | 5826 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
5827 | |
5828 | /* FIXME: This command has at least the following problems: | |
5829 | 1. It prints builtin types (in a very strange and confusing fashion). | |
5830 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
5831 | typedef struct foo *FOO |
5832 | type_print prints "FOO" when we want to make it (in this situation) | |
5833 | print "struct foo *". | |
c906108c SS |
5834 | I also think "ptype" or "whatis" is more likely to be useful (but if |
5835 | there is much disagreement "info types" can be fixed). */ | |
11db9430 | 5836 | add_info ("types", info_types_command, |
1bedd215 | 5837 | _("All type names, or those matching REGEXP.")); |
c906108c | 5838 | |
11db9430 | 5839 | add_info ("sources", info_sources_command, |
1bedd215 | 5840 | _("Source files in the program.")); |
c906108c SS |
5841 | |
5842 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 5843 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 5844 | |
717d2f5a JB |
5845 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
5846 | multiple_symbols_modes, &multiple_symbols_mode, | |
5847 | _("\ | |
5848 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
5849 | in an expression."), _("\ | |
5850 | Show how the debugger handles ambiguities in expressions."), _("\ | |
5851 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
5852 | NULL, NULL, &setlist, &showlist); | |
5853 | ||
c011a4f4 DE |
5854 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
5855 | &basenames_may_differ, _("\ | |
5856 | Set whether a source file may have multiple base names."), _("\ | |
5857 | Show whether a source file may have multiple base names."), _("\ | |
5858 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
5859 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
5860 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
5861 | before comparing them. Canonicalization is an expensive operation,\n\ | |
5862 | but it allows the same file be known by more than one base name.\n\ | |
5863 | If not set (the default), all source files are assumed to have just\n\ | |
5864 | one base name, and gdb will do file name comparisons more efficiently."), | |
5865 | NULL, NULL, | |
5866 | &setlist, &showlist); | |
5867 | ||
db0fec5c DE |
5868 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
5869 | _("Set debugging of symbol table creation."), | |
5870 | _("Show debugging of symbol table creation."), _("\ | |
5871 | When enabled (non-zero), debugging messages are printed when building\n\ | |
5872 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
5873 | A value greater than 1 provides more verbose information."), | |
5874 | NULL, | |
5875 | NULL, | |
5876 | &setdebuglist, &showdebuglist); | |
45cfd468 | 5877 | |
cc485e62 DE |
5878 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
5879 | _("\ | |
5880 | Set debugging of symbol lookup."), _("\ | |
5881 | Show debugging of symbol lookup."), _("\ | |
5882 | When enabled (non-zero), symbol lookups are logged."), | |
5883 | NULL, NULL, | |
5884 | &setdebuglist, &showdebuglist); | |
5885 | ||
f57d2163 DE |
5886 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
5887 | &new_symbol_cache_size, | |
5888 | _("Set the size of the symbol cache."), | |
5889 | _("Show the size of the symbol cache."), _("\ | |
5890 | The size of the symbol cache.\n\ | |
5891 | If zero then the symbol cache is disabled."), | |
5892 | set_symbol_cache_size_handler, NULL, | |
5893 | &maintenance_set_cmdlist, | |
5894 | &maintenance_show_cmdlist); | |
5895 | ||
5896 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
5897 | _("Dump the symbol cache for each program space."), | |
5898 | &maintenanceprintlist); | |
5899 | ||
5900 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
5901 | maintenance_print_symbol_cache_statistics, | |
5902 | _("Print symbol cache statistics for each program space."), | |
5903 | &maintenanceprintlist); | |
5904 | ||
5905 | add_cmd ("flush-symbol-cache", class_maintenance, | |
5906 | maintenance_flush_symbol_cache, | |
5907 | _("Flush the symbol cache for each program space."), | |
5908 | &maintenancelist); | |
5909 | ||
ea53e89f | 5910 | observer_attach_executable_changed (symtab_observer_executable_changed); |
f57d2163 DE |
5911 | observer_attach_new_objfile (symtab_new_objfile_observer); |
5912 | observer_attach_free_objfile (symtab_free_objfile_observer); | |
c906108c | 5913 | } |