Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 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" |
ccefe4c4 | 64 | |
ff6c39cf | 65 | /* Forward declarations for local functions. */ |
c906108c | 66 | |
a14ed312 | 67 | static void rbreak_command (char *, int); |
c906108c | 68 | |
f8eba3c6 | 69 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 70 | |
d12307c1 PMR |
71 | static struct block_symbol |
72 | lookup_symbol_aux (const char *name, | |
73 | const struct block *block, | |
74 | const domain_enum domain, | |
75 | enum language language, | |
76 | struct field_of_this_result *); | |
fba7f19c | 77 | |
e4051eeb | 78 | static |
d12307c1 PMR |
79 | struct block_symbol lookup_local_symbol (const char *name, |
80 | const struct block *block, | |
81 | const domain_enum domain, | |
82 | enum language language); | |
8155455b | 83 | |
d12307c1 | 84 | static struct block_symbol |
fe2a438d DE |
85 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
86 | const char *name, const domain_enum domain); | |
c906108c | 87 | |
b6b80672 PA |
88 | /* See symtab.h. */ |
89 | const struct block_symbol null_block_symbol = { NULL, NULL }; | |
90 | ||
ff6c39cf | 91 | extern initialize_file_ftype _initialize_symtab; |
c906108c | 92 | |
32ac0d11 TT |
93 | /* Program space key for finding name and language of "main". */ |
94 | ||
95 | static const struct program_space_data *main_progspace_key; | |
96 | ||
97 | /* Type of the data stored on the program space. */ | |
98 | ||
99 | struct main_info | |
100 | { | |
101 | /* Name of "main". */ | |
102 | ||
103 | char *name_of_main; | |
104 | ||
105 | /* Language of "main". */ | |
106 | ||
107 | enum language language_of_main; | |
108 | }; | |
109 | ||
f57d2163 DE |
110 | /* Program space key for finding its symbol cache. */ |
111 | ||
112 | static const struct program_space_data *symbol_cache_key; | |
113 | ||
114 | /* The default symbol cache size. | |
115 | There is no extra cpu cost for large N (except when flushing the cache, | |
116 | which is rare). The value here is just a first attempt. A better default | |
117 | value may be higher or lower. A prime number can make up for a bad hash | |
118 | computation, so that's why the number is what it is. */ | |
119 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
120 | ||
121 | /* The maximum symbol cache size. | |
122 | There's no method to the decision of what value to use here, other than | |
123 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
124 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
125 | ||
126 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
127 | symbol in any objfile. */ | |
d12307c1 PMR |
128 | #define SYMBOL_LOOKUP_FAILED \ |
129 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
130 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
131 | |
132 | /* Recording lookups that don't find the symbol is just as important, if not | |
133 | more so, than recording found symbols. */ | |
134 | ||
135 | enum symbol_cache_slot_state | |
136 | { | |
137 | SYMBOL_SLOT_UNUSED, | |
138 | SYMBOL_SLOT_NOT_FOUND, | |
139 | SYMBOL_SLOT_FOUND | |
140 | }; | |
141 | ||
52059ffd TT |
142 | struct symbol_cache_slot |
143 | { | |
144 | enum symbol_cache_slot_state state; | |
145 | ||
146 | /* The objfile that was current when the symbol was looked up. | |
147 | This is only needed for global blocks, but for simplicity's sake | |
148 | we allocate the space for both. If data shows the extra space used | |
149 | for static blocks is a problem, we can split things up then. | |
150 | ||
151 | Global blocks need cache lookup to include the objfile context because | |
152 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
153 | which can traverse objfiles in, effectively, any order, depending on | |
154 | the current objfile, thus affecting which symbol is found. Normally, | |
155 | only the current objfile is searched first, and then the rest are | |
156 | searched in recorded order; but putting cache lookup inside | |
157 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
158 | Instead we just make the current objfile part of the context of | |
159 | cache lookup. This means we can record the same symbol multiple times, | |
160 | each with a different "current objfile" that was in effect when the | |
161 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
162 | const struct objfile *objfile_context; | |
163 | ||
164 | union | |
165 | { | |
d12307c1 | 166 | struct block_symbol found; |
52059ffd TT |
167 | struct |
168 | { | |
169 | char *name; | |
170 | domain_enum domain; | |
171 | } not_found; | |
172 | } value; | |
173 | }; | |
174 | ||
f57d2163 DE |
175 | /* Symbols don't specify global vs static block. |
176 | So keep them in separate caches. */ | |
177 | ||
178 | struct block_symbol_cache | |
179 | { | |
180 | unsigned int hits; | |
181 | unsigned int misses; | |
182 | unsigned int collisions; | |
183 | ||
184 | /* SYMBOLS is a variable length array of this size. | |
185 | One can imagine that in general one cache (global/static) should be a | |
186 | fraction of the size of the other, but there's no data at the moment | |
187 | on which to decide. */ | |
188 | unsigned int size; | |
189 | ||
52059ffd | 190 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
191 | }; |
192 | ||
193 | /* The symbol cache. | |
194 | ||
195 | Searching for symbols in the static and global blocks over multiple objfiles | |
196 | again and again can be slow, as can searching very big objfiles. This is a | |
197 | simple cache to improve symbol lookup performance, which is critical to | |
198 | overall gdb performance. | |
199 | ||
200 | Symbols are hashed on the name, its domain, and block. | |
201 | They are also hashed on their objfile for objfile-specific lookups. */ | |
202 | ||
203 | struct symbol_cache | |
204 | { | |
205 | struct block_symbol_cache *global_symbols; | |
206 | struct block_symbol_cache *static_symbols; | |
207 | }; | |
208 | ||
45cfd468 | 209 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 210 | unsigned int symtab_create_debug = 0; |
45cfd468 | 211 | |
cc485e62 DE |
212 | /* When non-zero, print debugging messages related to symbol lookup. */ |
213 | unsigned int symbol_lookup_debug = 0; | |
214 | ||
f57d2163 DE |
215 | /* The size of the cache is staged here. */ |
216 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
217 | ||
218 | /* The current value of the symbol cache size. | |
219 | This is saved so that if the user enters a value too big we can restore | |
220 | the original value from here. */ | |
221 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
222 | ||
c011a4f4 DE |
223 | /* Non-zero if a file may be known by two different basenames. |
224 | This is the uncommon case, and significantly slows down gdb. | |
225 | Default set to "off" to not slow down the common case. */ | |
226 | int basenames_may_differ = 0; | |
227 | ||
717d2f5a JB |
228 | /* Allow the user to configure the debugger behavior with respect |
229 | to multiple-choice menus when more than one symbol matches during | |
230 | a symbol lookup. */ | |
231 | ||
7fc830e2 MK |
232 | const char multiple_symbols_ask[] = "ask"; |
233 | const char multiple_symbols_all[] = "all"; | |
234 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 235 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
236 | { |
237 | multiple_symbols_ask, | |
238 | multiple_symbols_all, | |
239 | multiple_symbols_cancel, | |
240 | NULL | |
241 | }; | |
242 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
243 | ||
244 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
245 | ||
246 | const char * | |
247 | multiple_symbols_select_mode (void) | |
248 | { | |
249 | return multiple_symbols_mode; | |
250 | } | |
251 | ||
20c681d1 DE |
252 | /* Return the name of a domain_enum. */ |
253 | ||
254 | const char * | |
255 | domain_name (domain_enum e) | |
256 | { | |
257 | switch (e) | |
258 | { | |
259 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
260 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
261 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 262 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
263 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
264 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
265 | default: gdb_assert_not_reached ("bad domain_enum"); | |
266 | } | |
267 | } | |
268 | ||
269 | /* Return the name of a search_domain . */ | |
270 | ||
271 | const char * | |
272 | search_domain_name (enum search_domain e) | |
273 | { | |
274 | switch (e) | |
275 | { | |
276 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
277 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
278 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
279 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
280 | default: gdb_assert_not_reached ("bad search_domain"); | |
281 | } | |
282 | } | |
283 | ||
43f3e411 | 284 | /* See symtab.h. */ |
db0fec5c | 285 | |
43f3e411 DE |
286 | struct symtab * |
287 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 288 | { |
43f3e411 | 289 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 290 | |
43f3e411 DE |
291 | /* The primary file symtab is the first one in the list. */ |
292 | return COMPUNIT_FILETABS (cust); | |
293 | } | |
294 | ||
295 | /* See symtab.h. */ | |
296 | ||
297 | enum language | |
298 | compunit_language (const struct compunit_symtab *cust) | |
299 | { | |
300 | struct symtab *symtab = compunit_primary_filetab (cust); | |
301 | ||
302 | /* The language of the compunit symtab is the language of its primary | |
303 | source file. */ | |
304 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
305 | } |
306 | ||
4aac40c8 TT |
307 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
308 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
309 | describes what we advertise). Returns true if they match, false |
310 | otherwise. */ | |
4aac40c8 TT |
311 | |
312 | int | |
b57a636e | 313 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
314 | { |
315 | int len = strlen (filename); | |
b57a636e | 316 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
317 | |
318 | if (len < search_len) | |
319 | return 0; | |
320 | ||
321 | /* The tail of FILENAME must match. */ | |
322 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
323 | return 0; | |
324 | ||
325 | /* Either the names must completely match, or the character | |
326 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
327 | directory separator. |
328 | ||
af529f8f JK |
329 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
330 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
331 | absolute path. The sama applies for "c:\file.c" possibly | |
332 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
333 | ||
d84fca2c JK |
334 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
335 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
336 | to put the "c:file.c" name into debug info. Such compatibility | |
337 | works only on GDB built for DOS host. */ | |
4aac40c8 | 338 | return (len == search_len |
af529f8f JK |
339 | || (!IS_ABSOLUTE_PATH (search_name) |
340 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
341 | || (HAS_DRIVE_SPEC (filename) |
342 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
343 | } | |
344 | ||
cce0e923 DE |
345 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
346 | Heads up on the order of the arguments. They match the order of | |
347 | compare_filenames_for_search, but it's the opposite of the order of | |
348 | arguments to gdb_filename_fnmatch. */ | |
349 | ||
350 | int | |
351 | compare_glob_filenames_for_search (const char *filename, | |
352 | const char *search_name) | |
353 | { | |
354 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
355 | all /s have to be explicitly specified. */ | |
356 | int file_path_elements = count_path_elements (filename); | |
357 | int search_path_elements = count_path_elements (search_name); | |
358 | ||
359 | if (search_path_elements > file_path_elements) | |
360 | return 0; | |
361 | ||
362 | if (IS_ABSOLUTE_PATH (search_name)) | |
363 | { | |
364 | return (search_path_elements == file_path_elements | |
365 | && gdb_filename_fnmatch (search_name, filename, | |
366 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
367 | } | |
368 | ||
369 | { | |
370 | const char *file_to_compare | |
371 | = strip_leading_path_elements (filename, | |
372 | file_path_elements - search_path_elements); | |
373 | ||
374 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
375 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
376 | } | |
377 | } | |
378 | ||
f8eba3c6 TT |
379 | /* Check for a symtab of a specific name by searching some symtabs. |
380 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 381 | |
b2d23133 DE |
382 | If NAME is not absolute, then REAL_PATH is NULL |
383 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
384 | ||
f5b95b50 | 385 | The return value, NAME, REAL_PATH, CALLBACK, and DATA |
f8eba3c6 TT |
386 | are identical to the `map_symtabs_matching_filename' method of |
387 | quick_symbol_functions. | |
388 | ||
43f3e411 DE |
389 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
390 | Each symtab within the specified compunit symtab is also searched. | |
391 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
392 | search until the end of the list. */ |
393 | ||
394 | int | |
395 | iterate_over_some_symtabs (const char *name, | |
f8eba3c6 TT |
396 | const char *real_path, |
397 | int (*callback) (struct symtab *symtab, | |
398 | void *data), | |
399 | void *data, | |
43f3e411 DE |
400 | struct compunit_symtab *first, |
401 | struct compunit_symtab *after_last) | |
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 | { | |
413 | if (callback (s, data)) | |
414 | return 1; | |
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 DE |
425 | { |
426 | if (callback (s, data)) | |
427 | return 1; | |
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 | { | |
441 | if (callback (s, data)) | |
442 | return 1; | |
443 | continue; | |
444 | } | |
445 | } | |
a94e8645 | 446 | } |
f8eba3c6 | 447 | } |
58d370e0 | 448 | |
f8eba3c6 TT |
449 | return 0; |
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 | ||
456 | Calls CALLBACK with each symtab that is found and with the supplied | |
457 | DATA. If CALLBACK returns true, the search stops. */ | |
458 | ||
459 | void | |
460 | iterate_over_symtabs (const char *name, | |
461 | int (*callback) (struct symtab *symtab, | |
462 | void *data), | |
463 | void *data) | |
464 | { | |
f8eba3c6 TT |
465 | struct objfile *objfile; |
466 | char *real_path = NULL; | |
f8eba3c6 TT |
467 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
468 | ||
469 | /* Here we are interested in canonicalizing an absolute path, not | |
470 | absolutizing a relative path. */ | |
471 | if (IS_ABSOLUTE_PATH (name)) | |
472 | { | |
f8eba3c6 TT |
473 | real_path = gdb_realpath (name); |
474 | make_cleanup (xfree, real_path); | |
af529f8f | 475 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
f8eba3c6 TT |
476 | } |
477 | ||
478 | ALL_OBJFILES (objfile) | |
479 | { | |
f5b95b50 | 480 | if (iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 481 | objfile->compunit_symtabs, NULL)) |
f8eba3c6 TT |
482 | { |
483 | do_cleanups (cleanups); | |
484 | return; | |
485 | } | |
486 | } | |
487 | ||
c906108c SS |
488 | /* Same search rules as above apply here, but now we look thru the |
489 | psymtabs. */ | |
490 | ||
ccefe4c4 TT |
491 | ALL_OBJFILES (objfile) |
492 | { | |
493 | if (objfile->sf | |
f8eba3c6 TT |
494 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, |
495 | name, | |
f8eba3c6 TT |
496 | real_path, |
497 | callback, | |
498 | data)) | |
ccefe4c4 | 499 | { |
f8eba3c6 TT |
500 | do_cleanups (cleanups); |
501 | return; | |
ccefe4c4 TT |
502 | } |
503 | } | |
c906108c | 504 | |
f8eba3c6 TT |
505 | do_cleanups (cleanups); |
506 | } | |
507 | ||
508 | /* The callback function used by lookup_symtab. */ | |
509 | ||
510 | static int | |
511 | lookup_symtab_callback (struct symtab *symtab, void *data) | |
512 | { | |
19ba03f4 | 513 | struct symtab **result_ptr = (struct symtab **) data; |
c906108c | 514 | |
f8eba3c6 TT |
515 | *result_ptr = symtab; |
516 | return 1; | |
c906108c | 517 | } |
f8eba3c6 TT |
518 | |
519 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
520 | symtab, or NULL. */ | |
521 | ||
522 | struct symtab * | |
523 | lookup_symtab (const char *name) | |
524 | { | |
525 | struct symtab *result = NULL; | |
526 | ||
527 | iterate_over_symtabs (name, lookup_symtab_callback, &result); | |
528 | return result; | |
529 | } | |
530 | ||
c906108c SS |
531 | \f |
532 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
533 | full method name, which consist of the class name (from T), the unadorned | |
534 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 535 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
536 | |
537 | char * | |
fba45db2 | 538 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
539 | { |
540 | int mangled_name_len; | |
541 | char *mangled_name; | |
542 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
543 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 544 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 545 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
0d5cff50 | 546 | const char *newname = type_name_no_tag (type); |
c906108c SS |
547 | |
548 | /* Does the form of physname indicate that it is the full mangled name | |
549 | of a constructor (not just the args)? */ | |
550 | int is_full_physname_constructor; | |
551 | ||
552 | int is_constructor; | |
015a42b4 | 553 | int is_destructor = is_destructor_name (physname); |
c906108c | 554 | /* Need a new type prefix. */ |
e6a959d6 PA |
555 | const char *const_prefix = method->is_const ? "C" : ""; |
556 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
557 | char buf[20]; |
558 | int len = (newname == NULL ? 0 : strlen (newname)); | |
559 | ||
43630227 PS |
560 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
561 | or an operator name. */ | |
562 | if ((physname[0] == '_' && physname[1] == 'Z') | |
563 | || is_operator_name (field_name)) | |
235d1e03 EZ |
564 | return xstrdup (physname); |
565 | ||
015a42b4 | 566 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 567 | |
3e43a32a MS |
568 | is_constructor = is_full_physname_constructor |
569 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
570 | |
571 | if (!is_destructor) | |
61012eef | 572 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
573 | |
574 | if (is_destructor || is_full_physname_constructor) | |
575 | { | |
c5aa993b JM |
576 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
577 | strcpy (mangled_name, physname); | |
c906108c SS |
578 | return mangled_name; |
579 | } | |
580 | ||
581 | if (len == 0) | |
582 | { | |
8c042590 | 583 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
584 | } |
585 | else if (physname[0] == 't' || physname[0] == 'Q') | |
586 | { | |
587 | /* The physname for template and qualified methods already includes | |
c5aa993b | 588 | the class name. */ |
8c042590 | 589 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
590 | newname = NULL; |
591 | len = 0; | |
592 | } | |
593 | else | |
594 | { | |
8c042590 PM |
595 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
596 | volatile_prefix, len); | |
c906108c SS |
597 | } |
598 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 599 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 600 | |
433759f7 MS |
601 | mangled_name = (char *) xmalloc (mangled_name_len); |
602 | if (is_constructor) | |
603 | mangled_name[0] = '\0'; | |
604 | else | |
605 | strcpy (mangled_name, field_name); | |
606 | ||
c906108c SS |
607 | strcat (mangled_name, buf); |
608 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
609 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 610 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
611 | if (newname != NULL) |
612 | strcat (mangled_name, newname); | |
613 | ||
614 | strcat (mangled_name, physname); | |
615 | return (mangled_name); | |
616 | } | |
12af6855 | 617 | |
b250c185 | 618 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 619 | correctly allocated. */ |
eca864fe | 620 | |
b250c185 SW |
621 | void |
622 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 623 | const char *name, |
ccde22c0 | 624 | struct obstack *obstack) |
b250c185 | 625 | { |
7c5fdd25 | 626 | if (gsymbol->language == language_ada) |
f85f34ed TT |
627 | { |
628 | if (name == NULL) | |
629 | { | |
630 | gsymbol->ada_mangled = 0; | |
631 | gsymbol->language_specific.obstack = obstack; | |
632 | } | |
633 | else | |
634 | { | |
635 | gsymbol->ada_mangled = 1; | |
615b3f62 | 636 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
637 | } |
638 | } | |
29df156d | 639 | else |
615b3f62 | 640 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
641 | } |
642 | ||
643 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 644 | |
0d5cff50 | 645 | const char * |
b250c185 SW |
646 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
647 | { | |
7c5fdd25 | 648 | if (gsymbol->language == language_ada) |
f85f34ed TT |
649 | { |
650 | if (!gsymbol->ada_mangled) | |
651 | return NULL; | |
652 | /* Fall through. */ | |
653 | } | |
654 | ||
615b3f62 | 655 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
656 | } |
657 | ||
12af6855 | 658 | \f |
89aad1f9 | 659 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 660 | depending upon the language for the symbol. */ |
eca864fe | 661 | |
89aad1f9 | 662 | void |
33e5013e | 663 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
664 | enum language language, |
665 | struct obstack *obstack) | |
89aad1f9 EZ |
666 | { |
667 | gsymbol->language = language; | |
7c5fdd25 DE |
668 | if (gsymbol->language == language_cplus |
669 | || gsymbol->language == language_d | |
a766d390 | 670 | || gsymbol->language == language_go |
f55ee35c JK |
671 | || gsymbol->language == language_objc |
672 | || gsymbol->language == language_fortran) | |
89aad1f9 | 673 | { |
f85f34ed TT |
674 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
675 | } | |
676 | else if (gsymbol->language == language_ada) | |
677 | { | |
678 | gdb_assert (gsymbol->ada_mangled == 0); | |
679 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 680 | } |
89aad1f9 EZ |
681 | else |
682 | { | |
683 | memset (&gsymbol->language_specific, 0, | |
684 | sizeof (gsymbol->language_specific)); | |
685 | } | |
686 | } | |
687 | ||
2de7ced7 DJ |
688 | /* Functions to initialize a symbol's mangled name. */ |
689 | ||
04a679b8 TT |
690 | /* Objects of this type are stored in the demangled name hash table. */ |
691 | struct demangled_name_entry | |
692 | { | |
9d2ceabe | 693 | const char *mangled; |
04a679b8 TT |
694 | char demangled[1]; |
695 | }; | |
696 | ||
697 | /* Hash function for the demangled name hash. */ | |
eca864fe | 698 | |
04a679b8 TT |
699 | static hashval_t |
700 | hash_demangled_name_entry (const void *data) | |
701 | { | |
19ba03f4 SM |
702 | const struct demangled_name_entry *e |
703 | = (const struct demangled_name_entry *) data; | |
433759f7 | 704 | |
04a679b8 TT |
705 | return htab_hash_string (e->mangled); |
706 | } | |
707 | ||
708 | /* Equality function for the demangled name hash. */ | |
eca864fe | 709 | |
04a679b8 TT |
710 | static int |
711 | eq_demangled_name_entry (const void *a, const void *b) | |
712 | { | |
19ba03f4 SM |
713 | const struct demangled_name_entry *da |
714 | = (const struct demangled_name_entry *) a; | |
715 | const struct demangled_name_entry *db | |
716 | = (const struct demangled_name_entry *) b; | |
433759f7 | 717 | |
04a679b8 TT |
718 | return strcmp (da->mangled, db->mangled) == 0; |
719 | } | |
720 | ||
2de7ced7 DJ |
721 | /* Create the hash table used for demangled names. Each hash entry is |
722 | a pair of strings; one for the mangled name and one for the demangled | |
723 | name. The entry is hashed via just the mangled name. */ | |
724 | ||
725 | static void | |
726 | create_demangled_names_hash (struct objfile *objfile) | |
727 | { | |
728 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 729 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
730 | Choosing a much larger table size wastes memory, and saves only about |
731 | 1% in symbol reading. */ | |
732 | ||
84a1243b | 733 | objfile->per_bfd->demangled_names_hash = htab_create_alloc |
04a679b8 | 734 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 735 | NULL, xcalloc, xfree); |
2de7ced7 | 736 | } |
12af6855 | 737 | |
2de7ced7 | 738 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
739 | language of that symbol. If the language is set to language_auto, |
740 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
741 | then set the language appropriately. The returned name is allocated |
742 | by the demangler and should be xfree'd. */ | |
12af6855 | 743 | |
2de7ced7 DJ |
744 | static char * |
745 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
746 | const char *mangled) | |
12af6855 | 747 | { |
12af6855 | 748 | char *demangled = NULL; |
8b302db8 TT |
749 | int i; |
750 | int recognized; | |
12af6855 JB |
751 | |
752 | if (gsymbol->language == language_unknown) | |
753 | gsymbol->language = language_auto; | |
1bae87b9 | 754 | |
8b302db8 | 755 | if (gsymbol->language != language_auto) |
1bae87b9 | 756 | { |
8b302db8 TT |
757 | const struct language_defn *lang = language_def (gsymbol->language); |
758 | ||
759 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
760 | return demangled; | |
6aecb9c2 | 761 | } |
8b302db8 TT |
762 | |
763 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 764 | { |
8b302db8 TT |
765 | enum language l = (enum language) i; |
766 | const struct language_defn *lang = language_def (l); | |
767 | ||
768 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 769 | { |
8b302db8 | 770 | gsymbol->language = l; |
a766d390 DE |
771 | return demangled; |
772 | } | |
773 | } | |
774 | ||
2de7ced7 DJ |
775 | return NULL; |
776 | } | |
777 | ||
980cae7a | 778 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
779 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
780 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
781 | NUL-terminated, then this function assumes that NAME is already | |
782 | correctly saved (either permanently or with a lifetime tied to the | |
783 | objfile), and it will not be copied. | |
784 | ||
785 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 786 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 787 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
788 | |
789 | void | |
790 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
791 | const char *linkage_name, int len, int copy_name, |
792 | struct objfile *objfile) | |
2de7ced7 | 793 | { |
04a679b8 | 794 | struct demangled_name_entry **slot; |
980cae7a DC |
795 | /* A 0-terminated copy of the linkage name. */ |
796 | const char *linkage_name_copy; | |
04a679b8 | 797 | struct demangled_name_entry entry; |
84a1243b | 798 | struct objfile_per_bfd_storage *per_bfd = objfile->per_bfd; |
2de7ced7 | 799 | |
b06ead72 JB |
800 | if (gsymbol->language == language_ada) |
801 | { | |
802 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 803 | we can save some space by not storing the demangled name. */ |
04a679b8 | 804 | if (!copy_name) |
0d5cff50 | 805 | gsymbol->name = linkage_name; |
04a679b8 TT |
806 | else |
807 | { | |
224c3ddb SM |
808 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
809 | len + 1); | |
0d5cff50 DE |
810 | |
811 | memcpy (name, linkage_name, len); | |
812 | name[len] = '\0'; | |
813 | gsymbol->name = name; | |
04a679b8 | 814 | } |
84a1243b | 815 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
816 | |
817 | return; | |
818 | } | |
819 | ||
84a1243b | 820 | if (per_bfd->demangled_names_hash == NULL) |
04a679b8 TT |
821 | create_demangled_names_hash (objfile); |
822 | ||
9c37b5ae | 823 | if (linkage_name[len] != '\0') |
2de7ced7 | 824 | { |
980cae7a DC |
825 | char *alloc_name; |
826 | ||
9c37b5ae | 827 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 828 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 829 | alloc_name[len] = '\0'; |
980cae7a DC |
830 | |
831 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
832 | } |
833 | else | |
9c37b5ae | 834 | linkage_name_copy = linkage_name; |
2de7ced7 | 835 | |
9c37b5ae | 836 | entry.mangled = linkage_name_copy; |
04a679b8 | 837 | slot = ((struct demangled_name_entry **) |
84a1243b | 838 | htab_find_slot (per_bfd->demangled_names_hash, |
04a679b8 | 839 | &entry, INSERT)); |
2de7ced7 DJ |
840 | |
841 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
842 | if (*slot == NULL |
843 | /* A C version of the symbol may have already snuck into the table. | |
844 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
845 | || (gsymbol->language == language_go | |
846 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 847 | { |
980cae7a DC |
848 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
849 | linkage_name_copy); | |
2de7ced7 DJ |
850 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
851 | ||
04a679b8 | 852 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 853 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
854 | mangled name saved, and we don't have a demangled name. So, |
855 | you might think we could save a little space by not recording | |
856 | this in the hash table at all. | |
857 | ||
858 | It turns out that it is actually important to still save such | |
859 | an entry in the hash table, because storing this name gives | |
705b5767 | 860 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 861 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 862 | { |
224c3ddb SM |
863 | *slot |
864 | = ((struct demangled_name_entry *) | |
865 | obstack_alloc (&per_bfd->storage_obstack, | |
866 | offsetof (struct demangled_name_entry, demangled) | |
867 | + demangled_len + 1)); | |
9c37b5ae | 868 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
869 | } |
870 | else | |
871 | { | |
9d2ceabe TT |
872 | char *mangled_ptr; |
873 | ||
04a679b8 TT |
874 | /* If we must copy the mangled name, put it directly after |
875 | the demangled name so we can have a single | |
876 | allocation. */ | |
224c3ddb SM |
877 | *slot |
878 | = ((struct demangled_name_entry *) | |
879 | obstack_alloc (&per_bfd->storage_obstack, | |
880 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 881 | + len + demangled_len + 2)); |
9d2ceabe | 882 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 883 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 884 | (*slot)->mangled = mangled_ptr; |
04a679b8 TT |
885 | } |
886 | ||
980cae7a | 887 | if (demangled_name != NULL) |
2de7ced7 | 888 | { |
04a679b8 | 889 | strcpy ((*slot)->demangled, demangled_name); |
2de7ced7 DJ |
890 | xfree (demangled_name); |
891 | } | |
892 | else | |
04a679b8 | 893 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
894 | } |
895 | ||
9c37b5ae | 896 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 897 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 898 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 899 | &per_bfd->storage_obstack); |
2de7ced7 | 900 | else |
84a1243b | 901 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
902 | } |
903 | ||
22abf04a DC |
904 | /* Return the source code name of a symbol. In languages where |
905 | demangling is necessary, this is the demangled name. */ | |
906 | ||
0d5cff50 | 907 | const char * |
22abf04a DC |
908 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
909 | { | |
9af17804 | 910 | switch (gsymbol->language) |
22abf04a | 911 | { |
1f8173e6 | 912 | case language_cplus: |
6aecb9c2 | 913 | case language_d: |
a766d390 | 914 | case language_go: |
1f8173e6 | 915 | case language_objc: |
f55ee35c | 916 | case language_fortran: |
b250c185 SW |
917 | if (symbol_get_demangled_name (gsymbol) != NULL) |
918 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
919 | break; |
920 | case language_ada: | |
f85f34ed | 921 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
922 | default: |
923 | break; | |
22abf04a | 924 | } |
1f8173e6 | 925 | return gsymbol->name; |
22abf04a DC |
926 | } |
927 | ||
9cc0d196 | 928 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 929 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 930 | |
0d5cff50 | 931 | const char * |
df8a16a1 | 932 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 933 | { |
c6e5ee5e SDJ |
934 | const char *dem_name = NULL; |
935 | ||
9af17804 | 936 | switch (gsymbol->language) |
1f8173e6 PH |
937 | { |
938 | case language_cplus: | |
6aecb9c2 | 939 | case language_d: |
a766d390 | 940 | case language_go: |
1f8173e6 | 941 | case language_objc: |
f55ee35c | 942 | case language_fortran: |
c6e5ee5e | 943 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
944 | break; |
945 | case language_ada: | |
f85f34ed | 946 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
947 | break; |
948 | default: | |
949 | break; | |
950 | } | |
c6e5ee5e | 951 | return dem_name; |
9cc0d196 | 952 | } |
fe39c653 | 953 | |
4725b721 PH |
954 | /* Return the search name of a symbol---generally the demangled or |
955 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 956 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 957 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 958 | |
0d5cff50 | 959 | const char * |
fc062ac6 JB |
960 | symbol_search_name (const struct general_symbol_info *gsymbol) |
961 | { | |
1f8173e6 PH |
962 | if (gsymbol->language == language_ada) |
963 | return gsymbol->name; | |
964 | else | |
965 | return symbol_natural_name (gsymbol); | |
4725b721 PH |
966 | } |
967 | ||
fe39c653 | 968 | /* Initialize the structure fields to zero values. */ |
eca864fe | 969 | |
fe39c653 EZ |
970 | void |
971 | init_sal (struct symtab_and_line *sal) | |
972 | { | |
729662a5 | 973 | memset (sal, 0, sizeof (*sal)); |
fe39c653 | 974 | } |
c906108c SS |
975 | \f |
976 | ||
94277a38 DJ |
977 | /* Return 1 if the two sections are the same, or if they could |
978 | plausibly be copies of each other, one in an original object | |
979 | file and another in a separated debug file. */ | |
980 | ||
981 | int | |
714835d5 UW |
982 | matching_obj_sections (struct obj_section *obj_first, |
983 | struct obj_section *obj_second) | |
94277a38 | 984 | { |
714835d5 UW |
985 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
986 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
987 | struct objfile *obj; |
988 | ||
989 | /* If they're the same section, then they match. */ | |
990 | if (first == second) | |
991 | return 1; | |
992 | ||
993 | /* If either is NULL, give up. */ | |
994 | if (first == NULL || second == NULL) | |
995 | return 0; | |
996 | ||
997 | /* This doesn't apply to absolute symbols. */ | |
998 | if (first->owner == NULL || second->owner == NULL) | |
999 | return 0; | |
1000 | ||
1001 | /* If they're in the same object file, they must be different sections. */ | |
1002 | if (first->owner == second->owner) | |
1003 | return 0; | |
1004 | ||
1005 | /* Check whether the two sections are potentially corresponding. They must | |
1006 | have the same size, address, and name. We can't compare section indexes, | |
1007 | which would be more reliable, because some sections may have been | |
1008 | stripped. */ | |
1009 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
1010 | return 0; | |
1011 | ||
818f79f6 | 1012 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 1013 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
1014 | - bfd_get_start_address (first->owner) |
1015 | != bfd_get_section_vma (second->owner, second) | |
1016 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1017 | return 0; |
1018 | ||
1019 | if (bfd_get_section_name (first->owner, first) == NULL | |
1020 | || bfd_get_section_name (second->owner, second) == NULL | |
1021 | || strcmp (bfd_get_section_name (first->owner, first), | |
1022 | bfd_get_section_name (second->owner, second)) != 0) | |
1023 | return 0; | |
1024 | ||
1025 | /* Otherwise check that they are in corresponding objfiles. */ | |
1026 | ||
1027 | ALL_OBJFILES (obj) | |
1028 | if (obj->obfd == first->owner) | |
1029 | break; | |
1030 | gdb_assert (obj != NULL); | |
1031 | ||
1032 | if (obj->separate_debug_objfile != NULL | |
1033 | && obj->separate_debug_objfile->obfd == second->owner) | |
1034 | return 1; | |
1035 | if (obj->separate_debug_objfile_backlink != NULL | |
1036 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1037 | return 1; | |
1038 | ||
1039 | return 0; | |
1040 | } | |
c5aa993b | 1041 | |
2097ae25 DE |
1042 | /* See symtab.h. */ |
1043 | ||
1044 | void | |
1045 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1046 | { |
52f0bd74 | 1047 | struct objfile *objfile; |
77e371c0 | 1048 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1049 | |
1050 | /* If we know that this is not a text address, return failure. This is | |
1051 | necessary because we loop based on texthigh and textlow, which do | |
1052 | not include the data ranges. */ | |
77e371c0 TT |
1053 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1054 | if (msymbol.minsym | |
1055 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
1056 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
1057 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
1058 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
1059 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
2097ae25 | 1060 | return; |
c906108c | 1061 | |
ff013f42 | 1062 | ALL_OBJFILES (objfile) |
ccefe4c4 | 1063 | { |
43f3e411 | 1064 | struct compunit_symtab *cust = NULL; |
433759f7 | 1065 | |
ccefe4c4 | 1066 | if (objfile->sf) |
43f3e411 DE |
1067 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, |
1068 | pc, section, 0); | |
1069 | if (cust) | |
2097ae25 | 1070 | return; |
ccefe4c4 | 1071 | } |
c906108c | 1072 | } |
c906108c | 1073 | \f |
f57d2163 DE |
1074 | /* Hash function for the symbol cache. */ |
1075 | ||
1076 | static unsigned int | |
1077 | hash_symbol_entry (const struct objfile *objfile_context, | |
1078 | const char *name, domain_enum domain) | |
1079 | { | |
1080 | unsigned int hash = (uintptr_t) objfile_context; | |
1081 | ||
1082 | if (name != NULL) | |
1083 | hash += htab_hash_string (name); | |
1084 | ||
2c26b84f DE |
1085 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1086 | to map to the same slot. */ | |
1087 | if (domain == STRUCT_DOMAIN) | |
1088 | hash += VAR_DOMAIN * 7; | |
1089 | else | |
1090 | hash += domain * 7; | |
f57d2163 DE |
1091 | |
1092 | return hash; | |
1093 | } | |
1094 | ||
1095 | /* Equality function for the symbol cache. */ | |
1096 | ||
1097 | static int | |
1098 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1099 | const struct objfile *objfile_context, | |
1100 | const char *name, domain_enum domain) | |
1101 | { | |
1102 | const char *slot_name; | |
1103 | domain_enum slot_domain; | |
1104 | ||
1105 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1106 | return 0; | |
1107 | ||
1108 | if (slot->objfile_context != objfile_context) | |
1109 | return 0; | |
1110 | ||
1111 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1112 | { | |
1113 | slot_name = slot->value.not_found.name; | |
1114 | slot_domain = slot->value.not_found.domain; | |
1115 | } | |
1116 | else | |
1117 | { | |
d12307c1 PMR |
1118 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1119 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1120 | } |
1121 | ||
1122 | /* NULL names match. */ | |
1123 | if (slot_name == NULL && name == NULL) | |
1124 | { | |
1125 | /* But there's no point in calling symbol_matches_domain in the | |
1126 | SYMBOL_SLOT_FOUND case. */ | |
1127 | if (slot_domain != domain) | |
1128 | return 0; | |
1129 | } | |
1130 | else if (slot_name != NULL && name != NULL) | |
1131 | { | |
1132 | /* It's important that we use the same comparison that was done the | |
1133 | first time through. If the slot records a found symbol, then this | |
1134 | means using strcmp_iw on SYMBOL_SEARCH_NAME. See dictionary.c. | |
1135 | It also means using symbol_matches_domain for found symbols. | |
1136 | See block.c. | |
1137 | ||
1138 | If the slot records a not-found symbol, then require a precise match. | |
1139 | We could still be lax with whitespace like strcmp_iw though. */ | |
1140 | ||
1141 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1142 | { | |
1143 | if (strcmp (slot_name, name) != 0) | |
1144 | return 0; | |
1145 | if (slot_domain != domain) | |
1146 | return 0; | |
1147 | } | |
1148 | else | |
1149 | { | |
d12307c1 | 1150 | struct symbol *sym = slot->value.found.symbol; |
f57d2163 DE |
1151 | |
1152 | if (strcmp_iw (slot_name, name) != 0) | |
1153 | return 0; | |
1154 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), | |
1155 | slot_domain, domain)) | |
1156 | return 0; | |
1157 | } | |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | /* Only one name is NULL. */ | |
1162 | return 0; | |
1163 | } | |
1164 | ||
1165 | return 1; | |
1166 | } | |
1167 | ||
1168 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1169 | length array) in bytes. */ | |
1170 | ||
1171 | static size_t | |
1172 | symbol_cache_byte_size (unsigned int size) | |
1173 | { | |
1174 | return (sizeof (struct block_symbol_cache) | |
1175 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1176 | } | |
1177 | ||
1178 | /* Resize CACHE. */ | |
1179 | ||
1180 | static void | |
1181 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1182 | { | |
1183 | /* If there's no change in size, don't do anything. | |
1184 | All caches have the same size, so we can just compare with the size | |
1185 | of the global symbols cache. */ | |
1186 | if ((cache->global_symbols != NULL | |
1187 | && cache->global_symbols->size == new_size) | |
1188 | || (cache->global_symbols == NULL | |
1189 | && new_size == 0)) | |
1190 | return; | |
1191 | ||
1192 | xfree (cache->global_symbols); | |
1193 | xfree (cache->static_symbols); | |
1194 | ||
1195 | if (new_size == 0) | |
1196 | { | |
1197 | cache->global_symbols = NULL; | |
1198 | cache->static_symbols = NULL; | |
1199 | } | |
1200 | else | |
1201 | { | |
1202 | size_t total_size = symbol_cache_byte_size (new_size); | |
1203 | ||
224c3ddb SM |
1204 | cache->global_symbols |
1205 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1206 | cache->static_symbols | |
1207 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1208 | cache->global_symbols->size = new_size; |
1209 | cache->static_symbols->size = new_size; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | /* Make a symbol cache of size SIZE. */ | |
1214 | ||
1215 | static struct symbol_cache * | |
1216 | make_symbol_cache (unsigned int size) | |
1217 | { | |
1218 | struct symbol_cache *cache; | |
1219 | ||
1220 | cache = XCNEW (struct symbol_cache); | |
1221 | resize_symbol_cache (cache, symbol_cache_size); | |
1222 | return cache; | |
1223 | } | |
1224 | ||
1225 | /* Free the space used by CACHE. */ | |
1226 | ||
1227 | static void | |
1228 | free_symbol_cache (struct symbol_cache *cache) | |
1229 | { | |
1230 | xfree (cache->global_symbols); | |
1231 | xfree (cache->static_symbols); | |
1232 | xfree (cache); | |
1233 | } | |
1234 | ||
1235 | /* Return the symbol cache of PSPACE. | |
1236 | Create one if it doesn't exist yet. */ | |
1237 | ||
1238 | static struct symbol_cache * | |
1239 | get_symbol_cache (struct program_space *pspace) | |
1240 | { | |
19ba03f4 SM |
1241 | struct symbol_cache *cache |
1242 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1243 | |
1244 | if (cache == NULL) | |
1245 | { | |
1246 | cache = make_symbol_cache (symbol_cache_size); | |
1247 | set_program_space_data (pspace, symbol_cache_key, cache); | |
1248 | } | |
1249 | ||
1250 | return cache; | |
1251 | } | |
1252 | ||
1253 | /* Delete the symbol cache of PSPACE. | |
1254 | Called when PSPACE is destroyed. */ | |
1255 | ||
1256 | static void | |
1257 | symbol_cache_cleanup (struct program_space *pspace, void *data) | |
1258 | { | |
19ba03f4 | 1259 | struct symbol_cache *cache = (struct symbol_cache *) data; |
f57d2163 DE |
1260 | |
1261 | free_symbol_cache (cache); | |
1262 | } | |
1263 | ||
1264 | /* Set the size of the symbol cache in all program spaces. */ | |
1265 | ||
1266 | static void | |
1267 | set_symbol_cache_size (unsigned int new_size) | |
1268 | { | |
1269 | struct program_space *pspace; | |
1270 | ||
1271 | ALL_PSPACES (pspace) | |
1272 | { | |
1273 | struct symbol_cache *cache | |
19ba03f4 | 1274 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); |
f57d2163 DE |
1275 | |
1276 | /* The pspace could have been created but not have a cache yet. */ | |
1277 | if (cache != NULL) | |
1278 | resize_symbol_cache (cache, new_size); | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | /* Called when symbol-cache-size is set. */ | |
1283 | ||
1284 | static void | |
1285 | set_symbol_cache_size_handler (char *args, int from_tty, | |
1286 | struct cmd_list_element *c) | |
1287 | { | |
1288 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1289 | { | |
1290 | /* Restore the previous value. | |
1291 | This is the value the "show" command prints. */ | |
1292 | new_symbol_cache_size = symbol_cache_size; | |
1293 | ||
1294 | error (_("Symbol cache size is too large, max is %u."), | |
1295 | MAX_SYMBOL_CACHE_SIZE); | |
1296 | } | |
1297 | symbol_cache_size = new_symbol_cache_size; | |
1298 | ||
1299 | set_symbol_cache_size (symbol_cache_size); | |
1300 | } | |
1301 | ||
1302 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1303 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1304 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1305 | failed (and thus this one will too), or NULL if the symbol is not present | |
1306 | in the cache. | |
2c26b84f DE |
1307 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1308 | set to the cache and slot of the symbol to save the result of a full lookup | |
1309 | attempt. */ | |
f57d2163 | 1310 | |
d12307c1 | 1311 | static struct block_symbol |
f57d2163 DE |
1312 | symbol_cache_lookup (struct symbol_cache *cache, |
1313 | struct objfile *objfile_context, int block, | |
1314 | const char *name, domain_enum domain, | |
1315 | struct block_symbol_cache **bsc_ptr, | |
1316 | struct symbol_cache_slot **slot_ptr) | |
1317 | { | |
1318 | struct block_symbol_cache *bsc; | |
1319 | unsigned int hash; | |
1320 | struct symbol_cache_slot *slot; | |
1321 | ||
1322 | if (block == GLOBAL_BLOCK) | |
1323 | bsc = cache->global_symbols; | |
1324 | else | |
1325 | bsc = cache->static_symbols; | |
1326 | if (bsc == NULL) | |
1327 | { | |
1328 | *bsc_ptr = NULL; | |
1329 | *slot_ptr = NULL; | |
d12307c1 | 1330 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1331 | } |
1332 | ||
1333 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1334 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1335 | |
1336 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1337 | { | |
1338 | if (symbol_lookup_debug) | |
1339 | fprintf_unfiltered (gdb_stdlog, | |
1340 | "%s block symbol cache hit%s for %s, %s\n", | |
1341 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1342 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1343 | ? " (not found)" : "", | |
1344 | name, domain_name (domain)); | |
1345 | ++bsc->hits; | |
1346 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1347 | return SYMBOL_LOOKUP_FAILED; | |
1348 | return slot->value.found; | |
1349 | } | |
1350 | ||
2c26b84f DE |
1351 | /* Symbol is not present in the cache. */ |
1352 | ||
1353 | *bsc_ptr = bsc; | |
1354 | *slot_ptr = slot; | |
1355 | ||
f57d2163 DE |
1356 | if (symbol_lookup_debug) |
1357 | { | |
1358 | fprintf_unfiltered (gdb_stdlog, | |
1359 | "%s block symbol cache miss for %s, %s\n", | |
1360 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1361 | name, domain_name (domain)); | |
1362 | } | |
1363 | ++bsc->misses; | |
d12307c1 | 1364 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1365 | } |
1366 | ||
1367 | /* Clear out SLOT. */ | |
1368 | ||
1369 | static void | |
1370 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1371 | { | |
1372 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1373 | xfree (slot->value.not_found.name); | |
1374 | slot->state = SYMBOL_SLOT_UNUSED; | |
1375 | } | |
1376 | ||
1377 | /* Mark SYMBOL as found in SLOT. | |
1378 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1379 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1380 | necessarily the objfile the symbol was found in. */ | |
1381 | ||
1382 | static void | |
1383 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1384 | struct symbol_cache_slot *slot, | |
1385 | struct objfile *objfile_context, | |
d12307c1 PMR |
1386 | struct symbol *symbol, |
1387 | const struct block *block) | |
f57d2163 DE |
1388 | { |
1389 | if (bsc == NULL) | |
1390 | return; | |
1391 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1392 | { | |
1393 | ++bsc->collisions; | |
1394 | symbol_cache_clear_slot (slot); | |
1395 | } | |
1396 | slot->state = SYMBOL_SLOT_FOUND; | |
1397 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1398 | slot->value.found.symbol = symbol; |
1399 | slot->value.found.block = block; | |
f57d2163 DE |
1400 | } |
1401 | ||
1402 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1403 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1404 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1405 | ||
1406 | static void | |
1407 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1408 | struct symbol_cache_slot *slot, | |
1409 | struct objfile *objfile_context, | |
1410 | const char *name, domain_enum domain) | |
1411 | { | |
1412 | if (bsc == NULL) | |
1413 | return; | |
1414 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1415 | { | |
1416 | ++bsc->collisions; | |
1417 | symbol_cache_clear_slot (slot); | |
1418 | } | |
1419 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1420 | slot->objfile_context = objfile_context; | |
1421 | slot->value.not_found.name = xstrdup (name); | |
1422 | slot->value.not_found.domain = domain; | |
1423 | } | |
1424 | ||
1425 | /* Flush the symbol cache of PSPACE. */ | |
1426 | ||
1427 | static void | |
1428 | symbol_cache_flush (struct program_space *pspace) | |
1429 | { | |
19ba03f4 SM |
1430 | struct symbol_cache *cache |
1431 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 | 1432 | int pass; |
f57d2163 DE |
1433 | |
1434 | if (cache == NULL) | |
1435 | return; | |
1436 | if (cache->global_symbols == NULL) | |
1437 | { | |
1438 | gdb_assert (symbol_cache_size == 0); | |
1439 | gdb_assert (cache->static_symbols == NULL); | |
1440 | return; | |
1441 | } | |
1442 | ||
1443 | /* If the cache is untouched since the last flush, early exit. | |
1444 | This is important for performance during the startup of a program linked | |
1445 | with 100s (or 1000s) of shared libraries. */ | |
1446 | if (cache->global_symbols->misses == 0 | |
1447 | && cache->static_symbols->misses == 0) | |
1448 | return; | |
1449 | ||
1450 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1451 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1452 | ||
1453 | for (pass = 0; pass < 2; ++pass) | |
1454 | { | |
1455 | struct block_symbol_cache *bsc | |
1456 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1457 | unsigned int i; | |
1458 | ||
1459 | for (i = 0; i < bsc->size; ++i) | |
1460 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1461 | } | |
1462 | ||
1463 | cache->global_symbols->hits = 0; | |
1464 | cache->global_symbols->misses = 0; | |
1465 | cache->global_symbols->collisions = 0; | |
1466 | cache->static_symbols->hits = 0; | |
1467 | cache->static_symbols->misses = 0; | |
1468 | cache->static_symbols->collisions = 0; | |
1469 | } | |
1470 | ||
1471 | /* Dump CACHE. */ | |
1472 | ||
1473 | static void | |
1474 | symbol_cache_dump (const struct symbol_cache *cache) | |
1475 | { | |
1476 | int pass; | |
1477 | ||
1478 | if (cache->global_symbols == NULL) | |
1479 | { | |
1480 | printf_filtered (" <disabled>\n"); | |
1481 | return; | |
1482 | } | |
1483 | ||
1484 | for (pass = 0; pass < 2; ++pass) | |
1485 | { | |
1486 | const struct block_symbol_cache *bsc | |
1487 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1488 | unsigned int i; | |
1489 | ||
1490 | if (pass == 0) | |
1491 | printf_filtered ("Global symbols:\n"); | |
1492 | else | |
1493 | printf_filtered ("Static symbols:\n"); | |
1494 | ||
1495 | for (i = 0; i < bsc->size; ++i) | |
1496 | { | |
1497 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1498 | ||
1499 | QUIT; | |
1500 | ||
1501 | switch (slot->state) | |
1502 | { | |
1503 | case SYMBOL_SLOT_UNUSED: | |
1504 | break; | |
1505 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1506 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1507 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1508 | slot->value.not_found.name, |
1509 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1510 | break; |
1511 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1512 | { |
1513 | struct symbol *found = slot->value.found.symbol; | |
1514 | const struct objfile *context = slot->objfile_context; | |
1515 | ||
1516 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1517 | host_address_to_string (context), | |
1518 | SYMBOL_PRINT_NAME (found), | |
1519 | domain_name (SYMBOL_DOMAIN (found))); | |
1520 | break; | |
1521 | } | |
f57d2163 DE |
1522 | } |
1523 | } | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | /* The "mt print symbol-cache" command. */ | |
1528 | ||
1529 | static void | |
1530 | maintenance_print_symbol_cache (char *args, int from_tty) | |
1531 | { | |
1532 | struct program_space *pspace; | |
1533 | ||
1534 | ALL_PSPACES (pspace) | |
1535 | { | |
1536 | struct symbol_cache *cache; | |
1537 | ||
1538 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1539 | pspace->num, | |
1540 | pspace->symfile_object_file != NULL | |
1541 | ? objfile_name (pspace->symfile_object_file) | |
1542 | : "(no object file)"); | |
1543 | ||
1544 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1545 | cache |
1546 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1547 | if (cache == NULL) |
1548 | printf_filtered (" <empty>\n"); | |
1549 | else | |
1550 | symbol_cache_dump (cache); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | /* The "mt flush-symbol-cache" command. */ | |
1555 | ||
1556 | static void | |
1557 | maintenance_flush_symbol_cache (char *args, int from_tty) | |
1558 | { | |
1559 | struct program_space *pspace; | |
1560 | ||
1561 | ALL_PSPACES (pspace) | |
1562 | { | |
1563 | symbol_cache_flush (pspace); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | /* Print usage statistics of CACHE. */ | |
1568 | ||
1569 | static void | |
1570 | symbol_cache_stats (struct symbol_cache *cache) | |
1571 | { | |
1572 | int pass; | |
1573 | ||
1574 | if (cache->global_symbols == NULL) | |
1575 | { | |
1576 | printf_filtered (" <disabled>\n"); | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | for (pass = 0; pass < 2; ++pass) | |
1581 | { | |
1582 | const struct block_symbol_cache *bsc | |
1583 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1584 | ||
1585 | QUIT; | |
1586 | ||
1587 | if (pass == 0) | |
1588 | printf_filtered ("Global block cache stats:\n"); | |
1589 | else | |
1590 | printf_filtered ("Static block cache stats:\n"); | |
1591 | ||
1592 | printf_filtered (" size: %u\n", bsc->size); | |
1593 | printf_filtered (" hits: %u\n", bsc->hits); | |
1594 | printf_filtered (" misses: %u\n", bsc->misses); | |
1595 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1596 | } | |
1597 | } | |
1598 | ||
1599 | /* The "mt print symbol-cache-statistics" command. */ | |
1600 | ||
1601 | static void | |
1602 | maintenance_print_symbol_cache_statistics (char *args, int from_tty) | |
1603 | { | |
1604 | struct program_space *pspace; | |
1605 | ||
1606 | ALL_PSPACES (pspace) | |
1607 | { | |
1608 | struct symbol_cache *cache; | |
1609 | ||
1610 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1611 | pspace->num, | |
1612 | pspace->symfile_object_file != NULL | |
1613 | ? objfile_name (pspace->symfile_object_file) | |
1614 | : "(no object file)"); | |
1615 | ||
1616 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1617 | cache |
1618 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1619 | if (cache == NULL) |
1620 | printf_filtered (" empty, no stats available\n"); | |
1621 | else | |
1622 | symbol_cache_stats (cache); | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | /* This module's 'new_objfile' observer. */ | |
1627 | ||
1628 | static void | |
1629 | symtab_new_objfile_observer (struct objfile *objfile) | |
1630 | { | |
1631 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1632 | symbol_cache_flush (current_program_space); | |
1633 | } | |
1634 | ||
1635 | /* This module's 'free_objfile' observer. */ | |
1636 | ||
1637 | static void | |
1638 | symtab_free_objfile_observer (struct objfile *objfile) | |
1639 | { | |
1640 | symbol_cache_flush (objfile->pspace); | |
1641 | } | |
1642 | \f | |
c906108c SS |
1643 | /* Debug symbols usually don't have section information. We need to dig that |
1644 | out of the minimal symbols and stash that in the debug symbol. */ | |
1645 | ||
ccefe4c4 | 1646 | void |
907fc202 UW |
1647 | fixup_section (struct general_symbol_info *ginfo, |
1648 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1649 | { |
1650 | struct minimal_symbol *msym; | |
c906108c | 1651 | |
bccdca4a UW |
1652 | /* First, check whether a minimal symbol with the same name exists |
1653 | and points to the same address. The address check is required | |
1654 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1655 | point to the function descriptor, while the debug symbol will | |
1656 | point to the actual function code. */ | |
907fc202 UW |
1657 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1658 | if (msym) | |
efd66ac6 | 1659 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1660 | else |
19e2d14b KB |
1661 | { |
1662 | /* Static, function-local variables do appear in the linker | |
1663 | (minimal) symbols, but are frequently given names that won't | |
1664 | be found via lookup_minimal_symbol(). E.g., it has been | |
1665 | observed in frv-uclinux (ELF) executables that a static, | |
1666 | function-local variable named "foo" might appear in the | |
1667 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1668 | point in attempting to extend the lookup-by-name mechanism to | |
1669 | handle this case due to the fact that there can be multiple | |
1670 | names. | |
9af17804 | 1671 | |
19e2d14b KB |
1672 | So, instead, search the section table when lookup by name has |
1673 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1674 | been relocated. If so, the relocation offset (i.e. the | |
1675 | ANOFFSET value) needs to be subtracted from these values when | |
1676 | performing the comparison. We unconditionally subtract it, | |
1677 | because, when no relocation has been performed, the ANOFFSET | |
1678 | value will simply be zero. | |
9af17804 | 1679 | |
19e2d14b KB |
1680 | The address of the symbol whose section we're fixing up HAS |
1681 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1682 | the section isn't yet known and knowing the section is | |
1683 | necessary in order to add the correct relocation value. In | |
1684 | other words, we wouldn't even be in this function (attempting | |
1685 | to compute the section) if it were already known. | |
1686 | ||
1687 | Note that it is possible to search the minimal symbols | |
1688 | (subtracting the relocation value if necessary) to find the | |
1689 | matching minimal symbol, but this is overkill and much less | |
1690 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1691 | symbol, only its section. |
1692 | ||
19e2d14b KB |
1693 | Note that this technique (of doing a section table search) |
1694 | can fail when unrelocated section addresses overlap. For | |
1695 | this reason, we still attempt a lookup by name prior to doing | |
1696 | a search of the section table. */ | |
9af17804 | 1697 | |
19e2d14b | 1698 | struct obj_section *s; |
e27d198c | 1699 | int fallback = -1; |
433759f7 | 1700 | |
19e2d14b KB |
1701 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1702 | { | |
65cf3563 | 1703 | int idx = s - objfile->sections; |
19e2d14b KB |
1704 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1705 | ||
e27d198c TT |
1706 | if (fallback == -1) |
1707 | fallback = idx; | |
1708 | ||
f1f6aadf PA |
1709 | if (obj_section_addr (s) - offset <= addr |
1710 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1711 | { |
19e2d14b KB |
1712 | ginfo->section = idx; |
1713 | return; | |
1714 | } | |
1715 | } | |
e27d198c TT |
1716 | |
1717 | /* If we didn't find the section, assume it is in the first | |
1718 | section. If there is no allocated section, then it hardly | |
1719 | matters what we pick, so just pick zero. */ | |
1720 | if (fallback == -1) | |
1721 | ginfo->section = 0; | |
1722 | else | |
1723 | ginfo->section = fallback; | |
19e2d14b | 1724 | } |
c906108c SS |
1725 | } |
1726 | ||
1727 | struct symbol * | |
fba45db2 | 1728 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1729 | { |
907fc202 UW |
1730 | CORE_ADDR addr; |
1731 | ||
c906108c SS |
1732 | if (!sym) |
1733 | return NULL; | |
1734 | ||
1994afbf DE |
1735 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1736 | return sym; | |
1737 | ||
907fc202 UW |
1738 | /* We either have an OBJFILE, or we can get at it from the sym's |
1739 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1740 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1741 | |
1742 | if (objfile == NULL) | |
08be3fe3 | 1743 | objfile = symbol_objfile (sym); |
907fc202 | 1744 | |
e27d198c TT |
1745 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1746 | return sym; | |
1747 | ||
907fc202 UW |
1748 | /* We should have an objfile by now. */ |
1749 | gdb_assert (objfile); | |
1750 | ||
1751 | switch (SYMBOL_CLASS (sym)) | |
1752 | { | |
1753 | case LOC_STATIC: | |
1754 | case LOC_LABEL: | |
907fc202 UW |
1755 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1756 | break; | |
1757 | case LOC_BLOCK: | |
1758 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1759 | break; | |
1760 | ||
1761 | default: | |
1762 | /* Nothing else will be listed in the minsyms -- no use looking | |
1763 | it up. */ | |
1764 | return sym; | |
1765 | } | |
1766 | ||
1767 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1768 | |
1769 | return sym; | |
1770 | } | |
1771 | ||
f8eba3c6 | 1772 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1773 | lookup functions. The result can either be the input NAME |
1774 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1775 | |
2f408ecb | 1776 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1777 | Normally, Ada symbol lookups are performed using the encoded name |
1778 | rather than the demangled name, and so it might seem to make sense | |
1779 | for this function to return an encoded version of NAME. | |
1780 | Unfortunately, we cannot do this, because this function is used in | |
1781 | circumstances where it is not appropriate to try to encode NAME. | |
1782 | For instance, when displaying the frame info, we demangle the name | |
1783 | of each parameter, and then perform a symbol lookup inside our | |
1784 | function using that demangled name. In Ada, certain functions | |
1785 | have internally-generated parameters whose name contain uppercase | |
1786 | characters. Encoding those name would result in those uppercase | |
1787 | characters to become lowercase, and thus cause the symbol lookup | |
1788 | to fail. */ | |
c906108c | 1789 | |
2f408ecb | 1790 | const char * |
f8eba3c6 | 1791 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1792 | demangle_result_storage &storage) |
c906108c | 1793 | { |
9c37b5ae | 1794 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1795 | lookup, so we can always binary search. */ |
53c5240f | 1796 | if (lang == language_cplus) |
729051e6 | 1797 | { |
2f408ecb PA |
1798 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1799 | if (demangled_name != NULL) | |
1800 | return storage.set_malloc_ptr (demangled_name); | |
1801 | ||
1802 | /* If we were given a non-mangled name, canonicalize it | |
1803 | according to the language (so far only for C++). */ | |
1804 | std::string canon = cp_canonicalize_string (name); | |
1805 | if (!canon.empty ()) | |
1806 | return storage.swap_string (canon); | |
729051e6 | 1807 | } |
6aecb9c2 JB |
1808 | else if (lang == language_d) |
1809 | { | |
2f408ecb PA |
1810 | char *demangled_name = d_demangle (name, 0); |
1811 | if (demangled_name != NULL) | |
1812 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1813 | } |
a766d390 DE |
1814 | else if (lang == language_go) |
1815 | { | |
2f408ecb PA |
1816 | char *demangled_name = go_demangle (name, 0); |
1817 | if (demangled_name != NULL) | |
1818 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1819 | } |
729051e6 | 1820 | |
2f408ecb | 1821 | return name; |
f8eba3c6 TT |
1822 | } |
1823 | ||
cf901d3b | 1824 | /* See symtab.h. |
f8eba3c6 | 1825 | |
cf901d3b | 1826 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1827 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1828 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1829 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1830 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1831 | that there is C++ code below which can error(), but that probably |
1832 | doesn't affect these calls since they are looking for a known | |
1833 | variable and thus can probably assume it will never hit the C++ | |
1834 | code). */ | |
1835 | ||
d12307c1 | 1836 | struct block_symbol |
f8eba3c6 TT |
1837 | lookup_symbol_in_language (const char *name, const struct block *block, |
1838 | const domain_enum domain, enum language lang, | |
1993b719 | 1839 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1840 | { |
2f408ecb PA |
1841 | demangle_result_storage storage; |
1842 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1843 | |
2f408ecb PA |
1844 | return lookup_symbol_aux (modified_name, block, domain, lang, |
1845 | is_a_field_of_this); | |
fba7f19c EZ |
1846 | } |
1847 | ||
cf901d3b | 1848 | /* See symtab.h. */ |
53c5240f | 1849 | |
d12307c1 | 1850 | struct block_symbol |
53c5240f | 1851 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1852 | domain_enum domain, |
1853 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1854 | { |
1855 | return lookup_symbol_in_language (name, block, domain, | |
1856 | current_language->la_language, | |
2570f2b7 | 1857 | is_a_field_of_this); |
53c5240f PA |
1858 | } |
1859 | ||
cf901d3b | 1860 | /* See symtab.h. */ |
66a17cb6 | 1861 | |
d12307c1 | 1862 | struct block_symbol |
66a17cb6 TT |
1863 | lookup_language_this (const struct language_defn *lang, |
1864 | const struct block *block) | |
1865 | { | |
1866 | if (lang->la_name_of_this == NULL || block == NULL) | |
d12307c1 | 1867 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 | 1868 | |
cc485e62 DE |
1869 | if (symbol_lookup_debug > 1) |
1870 | { | |
1871 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1872 | ||
1873 | fprintf_unfiltered (gdb_stdlog, | |
1874 | "lookup_language_this (%s, %s (objfile %s))", | |
1875 | lang->la_name, host_address_to_string (block), | |
1876 | objfile_debug_name (objfile)); | |
1877 | } | |
1878 | ||
03de6823 | 1879 | while (block) |
66a17cb6 TT |
1880 | { |
1881 | struct symbol *sym; | |
1882 | ||
16b2eaa1 | 1883 | sym = block_lookup_symbol (block, lang->la_name_of_this, VAR_DOMAIN); |
66a17cb6 | 1884 | if (sym != NULL) |
f149aabd | 1885 | { |
cc485e62 DE |
1886 | if (symbol_lookup_debug > 1) |
1887 | { | |
1888 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1889 | SYMBOL_PRINT_NAME (sym), | |
1890 | host_address_to_string (sym), | |
1891 | host_address_to_string (block)); | |
1892 | } | |
d12307c1 | 1893 | return (struct block_symbol) {sym, block}; |
f149aabd | 1894 | } |
66a17cb6 | 1895 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1896 | break; |
66a17cb6 TT |
1897 | block = BLOCK_SUPERBLOCK (block); |
1898 | } | |
03de6823 | 1899 | |
cc485e62 DE |
1900 | if (symbol_lookup_debug > 1) |
1901 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 1902 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 TT |
1903 | } |
1904 | ||
2dc3df72 TT |
1905 | /* Given TYPE, a structure/union, |
1906 | return 1 if the component named NAME from the ultimate target | |
1907 | structure/union is defined, otherwise, return 0. */ | |
1908 | ||
1909 | static int | |
1993b719 TT |
1910 | check_field (struct type *type, const char *name, |
1911 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1912 | { |
1913 | int i; | |
1914 | ||
1915 | /* The type may be a stub. */ | |
f168693b | 1916 | type = check_typedef (type); |
2dc3df72 TT |
1917 | |
1918 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1919 | { | |
1920 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1921 | ||
1922 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1923 | { |
1924 | is_a_field_of_this->type = type; | |
1925 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1926 | return 1; | |
1927 | } | |
2dc3df72 TT |
1928 | } |
1929 | ||
1930 | /* C++: If it was not found as a data field, then try to return it | |
1931 | as a pointer to a method. */ | |
1932 | ||
1933 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1934 | { | |
1935 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1936 | { |
1937 | is_a_field_of_this->type = type; | |
1938 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1939 | return 1; | |
1940 | } | |
2dc3df72 TT |
1941 | } |
1942 | ||
1943 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1944 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1945 | return 1; |
1946 | ||
1947 | return 0; | |
1948 | } | |
1949 | ||
53c5240f | 1950 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 1951 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 1952 | |
d12307c1 | 1953 | static struct block_symbol |
94af9270 KS |
1954 | lookup_symbol_aux (const char *name, const struct block *block, |
1955 | const domain_enum domain, enum language language, | |
1993b719 | 1956 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 1957 | { |
d12307c1 | 1958 | struct block_symbol result; |
53c5240f | 1959 | const struct language_defn *langdef; |
406bc4de | 1960 | |
cc485e62 DE |
1961 | if (symbol_lookup_debug) |
1962 | { | |
1963 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1964 | ||
1965 | fprintf_unfiltered (gdb_stdlog, | |
1966 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
1967 | name, host_address_to_string (block), | |
1968 | objfile != NULL | |
1969 | ? objfile_debug_name (objfile) : "NULL", | |
1970 | domain_name (domain), language_str (language)); | |
1971 | } | |
1972 | ||
9a146a11 EZ |
1973 | /* Make sure we do something sensible with is_a_field_of_this, since |
1974 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
1975 | certainly use it later. If we don't set it, the contents of |
1976 | is_a_field_of_this are undefined. */ | |
9a146a11 | 1977 | if (is_a_field_of_this != NULL) |
1993b719 | 1978 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 1979 | |
e4051eeb DC |
1980 | /* Search specified block and its superiors. Don't search |
1981 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1982 | |
d12307c1 PMR |
1983 | result = lookup_local_symbol (name, block, domain, language); |
1984 | if (result.symbol != NULL) | |
cc485e62 DE |
1985 | { |
1986 | if (symbol_lookup_debug) | |
1987 | { | |
1988 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 1989 | host_address_to_string (result.symbol)); |
cc485e62 | 1990 | } |
d12307c1 | 1991 | return result; |
cc485e62 | 1992 | } |
c906108c | 1993 | |
53c5240f | 1994 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 1995 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
1996 | |
1997 | langdef = language_def (language); | |
5f9a71c3 | 1998 | |
6592e36f TT |
1999 | /* Don't do this check if we are searching for a struct. It will |
2000 | not be found by check_field, but will be found by other | |
2001 | means. */ | |
2002 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 2003 | { |
d12307c1 | 2004 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 2005 | |
d12307c1 | 2006 | if (result.symbol) |
c906108c | 2007 | { |
d12307c1 | 2008 | struct type *t = result.symbol->type; |
9af17804 | 2009 | |
2b2d9e11 VP |
2010 | /* I'm not really sure that type of this can ever |
2011 | be typedefed; just be safe. */ | |
f168693b | 2012 | t = check_typedef (t); |
2b2d9e11 VP |
2013 | if (TYPE_CODE (t) == TYPE_CODE_PTR |
2014 | || TYPE_CODE (t) == TYPE_CODE_REF) | |
2015 | t = TYPE_TARGET_TYPE (t); | |
9af17804 | 2016 | |
2b2d9e11 VP |
2017 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
2018 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 2019 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 2020 | langdef->la_name_of_this); |
9af17804 | 2021 | |
1993b719 | 2022 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
2023 | { |
2024 | if (symbol_lookup_debug) | |
2025 | { | |
2026 | fprintf_unfiltered (gdb_stdlog, | |
2027 | "lookup_symbol_aux (...) = NULL\n"); | |
2028 | } | |
d12307c1 | 2029 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2030 | } |
c906108c SS |
2031 | } |
2032 | } | |
2033 | ||
53c5240f | 2034 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2035 | up static and global variables. */ |
c906108c | 2036 | |
d12307c1 PMR |
2037 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2038 | if (result.symbol != NULL) | |
cc485e62 DE |
2039 | { |
2040 | if (symbol_lookup_debug) | |
2041 | { | |
2042 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2043 | host_address_to_string (result.symbol)); |
cc485e62 | 2044 | } |
d12307c1 | 2045 | return result; |
cc485e62 | 2046 | } |
c906108c | 2047 | |
774b6a14 TT |
2048 | /* Now search all static file-level symbols. Not strictly correct, |
2049 | but more useful than an error. */ | |
41f62f39 | 2050 | |
d12307c1 | 2051 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2052 | if (symbol_lookup_debug) |
2053 | { | |
2054 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2055 | result.symbol != NULL |
2056 | ? host_address_to_string (result.symbol) | |
2057 | : "NULL"); | |
cc485e62 | 2058 | } |
d12307c1 | 2059 | return result; |
41f62f39 JK |
2060 | } |
2061 | ||
e4051eeb | 2062 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2063 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2064 | |
d12307c1 | 2065 | static struct block_symbol |
74016e12 DE |
2066 | lookup_local_symbol (const char *name, const struct block *block, |
2067 | const domain_enum domain, | |
2068 | enum language language) | |
8155455b DC |
2069 | { |
2070 | struct symbol *sym; | |
89a9d1b1 | 2071 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2072 | const char *scope = block_scope (block); |
2073 | ||
e4051eeb DC |
2074 | /* Check if either no block is specified or it's a global block. */ |
2075 | ||
89a9d1b1 | 2076 | if (static_block == NULL) |
d12307c1 | 2077 | return (struct block_symbol) {NULL, NULL}; |
e4051eeb | 2078 | |
89a9d1b1 | 2079 | while (block != static_block) |
f61e8913 | 2080 | { |
d1a2d36d | 2081 | sym = lookup_symbol_in_block (name, block, domain); |
f61e8913 | 2082 | if (sym != NULL) |
d12307c1 | 2083 | return (struct block_symbol) {sym, block}; |
edb3359d | 2084 | |
f55ee35c | 2085 | if (language == language_cplus || language == language_fortran) |
13387711 | 2086 | { |
d12307c1 PMR |
2087 | struct block_symbol sym |
2088 | = cp_lookup_symbol_imports_or_template (scope, name, block, | |
2089 | domain); | |
2090 | ||
2091 | if (sym.symbol != NULL) | |
13387711 SW |
2092 | return sym; |
2093 | } | |
2094 | ||
edb3359d DJ |
2095 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2096 | break; | |
f61e8913 DC |
2097 | block = BLOCK_SUPERBLOCK (block); |
2098 | } | |
2099 | ||
3aee438b | 2100 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2101 | |
d12307c1 | 2102 | return (struct block_symbol) {NULL, NULL}; |
f61e8913 DC |
2103 | } |
2104 | ||
cf901d3b | 2105 | /* See symtab.h. */ |
3a40aaa0 | 2106 | |
c0201579 | 2107 | struct objfile * |
3a40aaa0 UW |
2108 | lookup_objfile_from_block (const struct block *block) |
2109 | { | |
2110 | struct objfile *obj; | |
43f3e411 | 2111 | struct compunit_symtab *cust; |
3a40aaa0 UW |
2112 | |
2113 | if (block == NULL) | |
2114 | return NULL; | |
2115 | ||
2116 | block = block_global_block (block); | |
43f3e411 DE |
2117 | /* Look through all blockvectors. */ |
2118 | ALL_COMPUNITS (obj, cust) | |
2119 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), | |
2120 | GLOBAL_BLOCK)) | |
61f0d762 JK |
2121 | { |
2122 | if (obj->separate_debug_objfile_backlink) | |
2123 | obj = obj->separate_debug_objfile_backlink; | |
2124 | ||
2125 | return obj; | |
2126 | } | |
3a40aaa0 UW |
2127 | |
2128 | return NULL; | |
2129 | } | |
2130 | ||
cf901d3b | 2131 | /* See symtab.h. */ |
f61e8913 | 2132 | |
5f9a71c3 | 2133 | struct symbol * |
d1a2d36d DE |
2134 | lookup_symbol_in_block (const char *name, const struct block *block, |
2135 | const domain_enum domain) | |
f61e8913 DC |
2136 | { |
2137 | struct symbol *sym; | |
f61e8913 | 2138 | |
cc485e62 DE |
2139 | if (symbol_lookup_debug > 1) |
2140 | { | |
2141 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2142 | ||
2143 | fprintf_unfiltered (gdb_stdlog, | |
2144 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2145 | name, host_address_to_string (block), | |
2146 | objfile_debug_name (objfile), | |
2147 | domain_name (domain)); | |
2148 | } | |
2149 | ||
16b2eaa1 | 2150 | sym = block_lookup_symbol (block, name, domain); |
f61e8913 | 2151 | if (sym) |
8155455b | 2152 | { |
cc485e62 DE |
2153 | if (symbol_lookup_debug > 1) |
2154 | { | |
2155 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2156 | host_address_to_string (sym)); | |
2157 | } | |
21b556f4 | 2158 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2159 | } |
2160 | ||
cc485e62 DE |
2161 | if (symbol_lookup_debug > 1) |
2162 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2163 | return NULL; |
2164 | } | |
2165 | ||
cf901d3b | 2166 | /* See symtab.h. */ |
3a40aaa0 | 2167 | |
d12307c1 | 2168 | struct block_symbol |
efad9b6a | 2169 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 2170 | const char *name, |
21b556f4 | 2171 | const domain_enum domain) |
3a40aaa0 | 2172 | { |
efad9b6a | 2173 | struct objfile *objfile; |
3a40aaa0 | 2174 | |
15d123c9 TG |
2175 | for (objfile = main_objfile; |
2176 | objfile; | |
2177 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
2178 | { | |
d12307c1 PMR |
2179 | struct block_symbol result |
2180 | = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain); | |
15d123c9 | 2181 | |
d12307c1 PMR |
2182 | if (result.symbol != NULL) |
2183 | return result; | |
15d123c9 | 2184 | } |
56e3f43c | 2185 | |
d12307c1 | 2186 | return (struct block_symbol) {NULL, NULL}; |
3a40aaa0 UW |
2187 | } |
2188 | ||
19630284 JB |
2189 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2190 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2191 | depending on whether or not we want to search global symbols or |
2192 | static symbols. */ | |
2193 | ||
d12307c1 | 2194 | static struct block_symbol |
74016e12 DE |
2195 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
2196 | const char *name, const domain_enum domain) | |
19630284 | 2197 | { |
43f3e411 | 2198 | struct compunit_symtab *cust; |
19630284 | 2199 | |
ba715d7f JK |
2200 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2201 | ||
cc485e62 DE |
2202 | if (symbol_lookup_debug > 1) |
2203 | { | |
2204 | fprintf_unfiltered (gdb_stdlog, | |
2205 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2206 | objfile_debug_name (objfile), | |
2207 | block_index == GLOBAL_BLOCK | |
2208 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2209 | name, domain_name (domain)); | |
2210 | } | |
2211 | ||
43f3e411 | 2212 | ALL_OBJFILE_COMPUNITS (objfile, cust) |
a743abeb | 2213 | { |
43f3e411 DE |
2214 | const struct blockvector *bv; |
2215 | const struct block *block; | |
d12307c1 | 2216 | struct block_symbol result; |
43f3e411 DE |
2217 | |
2218 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2219 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2220 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2221 | result.block = block; | |
2222 | if (result.symbol != NULL) | |
a743abeb | 2223 | { |
cc485e62 DE |
2224 | if (symbol_lookup_debug > 1) |
2225 | { | |
2226 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2227 | host_address_to_string (result.symbol), |
cc485e62 DE |
2228 | host_address_to_string (block)); |
2229 | } | |
d12307c1 PMR |
2230 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2231 | return result; | |
2232 | ||
a743abeb DE |
2233 | } |
2234 | } | |
19630284 | 2235 | |
cc485e62 DE |
2236 | if (symbol_lookup_debug > 1) |
2237 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 2238 | return (struct block_symbol) {NULL, NULL}; |
19630284 JB |
2239 | } |
2240 | ||
74016e12 | 2241 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2242 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2243 | and all associated separate debug objfiles. |
2244 | ||
2245 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2246 | because the outer loop will cause them to be searched too. This case is | |
2247 | different. Here we're called from search_symbols where it will only | |
2248 | call us for the the objfile that contains a matching minsym. */ | |
422d65e7 | 2249 | |
d12307c1 | 2250 | static struct block_symbol |
422d65e7 DE |
2251 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2252 | const char *linkage_name, | |
2253 | domain_enum domain) | |
2254 | { | |
2255 | enum language lang = current_language->la_language; | |
422d65e7 DE |
2256 | struct objfile *main_objfile, *cur_objfile; |
2257 | ||
2f408ecb PA |
2258 | demangle_result_storage storage; |
2259 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2260 | ||
422d65e7 DE |
2261 | if (objfile->separate_debug_objfile_backlink) |
2262 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2263 | else | |
2264 | main_objfile = objfile; | |
2265 | ||
2266 | for (cur_objfile = main_objfile; | |
2267 | cur_objfile; | |
2268 | cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile)) | |
2269 | { | |
d12307c1 PMR |
2270 | struct block_symbol result; |
2271 | ||
2272 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2273 | modified_name, domain); | |
2274 | if (result.symbol == NULL) | |
2275 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2276 | modified_name, domain); | |
2277 | if (result.symbol != NULL) | |
2f408ecb | 2278 | return result; |
422d65e7 DE |
2279 | } |
2280 | ||
d12307c1 | 2281 | return (struct block_symbol) {NULL, NULL}; |
422d65e7 DE |
2282 | } |
2283 | ||
08c23b0d TT |
2284 | /* A helper function that throws an exception when a symbol was found |
2285 | in a psymtab but not in a symtab. */ | |
2286 | ||
2287 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 2288 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 2289 | struct compunit_symtab *cust) |
08c23b0d TT |
2290 | { |
2291 | error (_("\ | |
2292 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2293 | %s may be an inlined function, or may be a template function\n \ | |
2294 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2295 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2296 | name, |
2297 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2298 | name, name); | |
08c23b0d TT |
2299 | } |
2300 | ||
74016e12 DE |
2301 | /* A helper function for various lookup routines that interfaces with |
2302 | the "quick" symbol table functions. */ | |
8155455b | 2303 | |
d12307c1 | 2304 | static struct block_symbol |
74016e12 DE |
2305 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
2306 | const char *name, const domain_enum domain) | |
8155455b | 2307 | { |
43f3e411 | 2308 | struct compunit_symtab *cust; |
346d1dfe | 2309 | const struct blockvector *bv; |
8155455b | 2310 | const struct block *block; |
d12307c1 | 2311 | struct block_symbol result; |
8155455b | 2312 | |
ccefe4c4 | 2313 | if (!objfile->sf) |
d12307c1 | 2314 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2315 | |
2316 | if (symbol_lookup_debug > 1) | |
2317 | { | |
2318 | fprintf_unfiltered (gdb_stdlog, | |
2319 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2320 | objfile_debug_name (objfile), | |
2321 | block_index == GLOBAL_BLOCK | |
2322 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2323 | name, domain_name (domain)); | |
2324 | } | |
2325 | ||
43f3e411 DE |
2326 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2327 | if (cust == NULL) | |
cc485e62 DE |
2328 | { |
2329 | if (symbol_lookup_debug > 1) | |
2330 | { | |
2331 | fprintf_unfiltered (gdb_stdlog, | |
2332 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2333 | } | |
d12307c1 | 2334 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2335 | } |
8155455b | 2336 | |
43f3e411 | 2337 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2338 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2339 | result.symbol = block_lookup_symbol (block, name, domain); |
2340 | if (result.symbol == NULL) | |
43f3e411 | 2341 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2342 | |
2343 | if (symbol_lookup_debug > 1) | |
2344 | { | |
2345 | fprintf_unfiltered (gdb_stdlog, | |
2346 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2347 | host_address_to_string (result.symbol), |
cc485e62 DE |
2348 | host_address_to_string (block)); |
2349 | } | |
2350 | ||
d12307c1 PMR |
2351 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2352 | result.block = block; | |
2353 | return result; | |
8155455b DC |
2354 | } |
2355 | ||
cf901d3b | 2356 | /* See symtab.h. */ |
5f9a71c3 | 2357 | |
d12307c1 | 2358 | struct block_symbol |
f606139a DE |
2359 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2360 | const char *name, | |
5f9a71c3 | 2361 | const struct block *block, |
21b556f4 | 2362 | const domain_enum domain) |
5f9a71c3 | 2363 | { |
d12307c1 | 2364 | struct block_symbol result; |
5f9a71c3 DC |
2365 | |
2366 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2367 | this (or what turned into this) was part of lookup_symbol_aux; | |
2368 | I'm much less worried about these questions now, since these | |
2369 | decisions have turned out well, but I leave these comments here | |
2370 | for posterity. */ | |
2371 | ||
2372 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2373 | not it would be appropriate to search the current global block | |
2374 | here as well. (That's what this code used to do before the | |
2375 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2376 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2377 | next. On the other hand, if decode_line_1 is passed an argument |
2378 | like filename:var, then the user presumably wants 'var' to be | |
2379 | searched for in filename. On the third hand, there shouldn't be | |
2380 | multiple global variables all of which are named 'var', and it's | |
2381 | not like decode_line_1 has ever restricted its search to only | |
2382 | global variables in a single filename. All in all, only | |
2383 | searching the static block here seems best: it's correct and it's | |
2384 | cleanest. */ | |
2385 | ||
2386 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2387 | issue here: if you usually search for global symbols in the | |
2388 | current file, then it would be slightly better to search the | |
2389 | current global block before searching all the symtabs. But there | |
2390 | are other factors that have a much greater effect on performance | |
2391 | than that one, so I don't think we should worry about that for | |
2392 | now. */ | |
2393 | ||
d9060ba6 DE |
2394 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2395 | the current objfile. Searching the current objfile first is useful | |
2396 | for both matching user expectations as well as performance. */ | |
2397 | ||
d12307c1 PMR |
2398 | result = lookup_symbol_in_static_block (name, block, domain); |
2399 | if (result.symbol != NULL) | |
2400 | return result; | |
5f9a71c3 | 2401 | |
1994afbf DE |
2402 | /* If we didn't find a definition for a builtin type in the static block, |
2403 | search for it now. This is actually the right thing to do and can be | |
2404 | a massive performance win. E.g., when debugging a program with lots of | |
2405 | shared libraries we could search all of them only to find out the | |
2406 | builtin type isn't defined in any of them. This is common for types | |
2407 | like "void". */ | |
2408 | if (domain == VAR_DOMAIN) | |
2409 | { | |
2410 | struct gdbarch *gdbarch; | |
2411 | ||
2412 | if (block == NULL) | |
2413 | gdbarch = target_gdbarch (); | |
2414 | else | |
2415 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2416 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2417 | gdbarch, name); | |
2418 | result.block = NULL; | |
2419 | if (result.symbol != NULL) | |
2420 | return result; | |
1994afbf DE |
2421 | } |
2422 | ||
08724ab7 | 2423 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2424 | } |
2425 | ||
cf901d3b | 2426 | /* See symtab.h. */ |
5f9a71c3 | 2427 | |
d12307c1 | 2428 | struct block_symbol |
24d864bb DE |
2429 | lookup_symbol_in_static_block (const char *name, |
2430 | const struct block *block, | |
2431 | const domain_enum domain) | |
5f9a71c3 DC |
2432 | { |
2433 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2434 | struct symbol *sym; |
5f9a71c3 | 2435 | |
cc485e62 | 2436 | if (static_block == NULL) |
d12307c1 | 2437 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2438 | |
2439 | if (symbol_lookup_debug) | |
2440 | { | |
2441 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2442 | ||
2443 | fprintf_unfiltered (gdb_stdlog, | |
2444 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2445 | " %s)\n", | |
2446 | name, | |
2447 | host_address_to_string (block), | |
2448 | objfile_debug_name (objfile), | |
2449 | domain_name (domain)); | |
2450 | } | |
2451 | ||
2452 | sym = lookup_symbol_in_block (name, static_block, domain); | |
2453 | if (symbol_lookup_debug) | |
2454 | { | |
2455 | fprintf_unfiltered (gdb_stdlog, | |
2456 | "lookup_symbol_in_static_block (...) = %s\n", | |
2457 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2458 | } | |
d12307c1 | 2459 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2460 | } |
2461 | ||
af3768e9 DE |
2462 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2463 | 1) First search expanded symtabs, and if not found | |
2464 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2465 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2466 | ||
d12307c1 | 2467 | static struct block_symbol |
af3768e9 DE |
2468 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
2469 | const char *name, const domain_enum domain) | |
2470 | { | |
d12307c1 | 2471 | struct block_symbol result; |
af3768e9 | 2472 | |
cc485e62 DE |
2473 | if (symbol_lookup_debug) |
2474 | { | |
2475 | fprintf_unfiltered (gdb_stdlog, | |
2476 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2477 | objfile_debug_name (objfile), | |
2478 | block_index == GLOBAL_BLOCK | |
2479 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2480 | name, domain_name (domain)); | |
2481 | } | |
2482 | ||
af3768e9 DE |
2483 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2484 | name, domain); | |
d12307c1 | 2485 | if (result.symbol != NULL) |
af3768e9 | 2486 | { |
cc485e62 DE |
2487 | if (symbol_lookup_debug) |
2488 | { | |
2489 | fprintf_unfiltered (gdb_stdlog, | |
2490 | "lookup_symbol_in_objfile (...) = %s" | |
2491 | " (in symtabs)\n", | |
d12307c1 | 2492 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2493 | } |
2494 | return result; | |
af3768e9 DE |
2495 | } |
2496 | ||
cc485e62 DE |
2497 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2498 | name, domain); | |
2499 | if (symbol_lookup_debug) | |
2500 | { | |
2501 | fprintf_unfiltered (gdb_stdlog, | |
2502 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2503 | result.symbol != NULL |
2504 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2505 | : "NULL", |
d12307c1 | 2506 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2507 | } |
af3768e9 DE |
2508 | return result; |
2509 | } | |
2510 | ||
2511 | /* See symtab.h. */ | |
2512 | ||
d12307c1 | 2513 | struct block_symbol |
af3768e9 DE |
2514 | lookup_static_symbol (const char *name, const domain_enum domain) |
2515 | { | |
f57d2163 | 2516 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
af3768e9 | 2517 | struct objfile *objfile; |
d12307c1 | 2518 | struct block_symbol result; |
f57d2163 DE |
2519 | struct block_symbol_cache *bsc; |
2520 | struct symbol_cache_slot *slot; | |
2521 | ||
2522 | /* Lookup in STATIC_BLOCK is not current-objfile-dependent, so just pass | |
2523 | NULL for OBJFILE_CONTEXT. */ | |
2524 | result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain, | |
2525 | &bsc, &slot); | |
d12307c1 | 2526 | if (result.symbol != NULL) |
f57d2163 | 2527 | { |
d12307c1 PMR |
2528 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2529 | return (struct block_symbol) {NULL, NULL}; | |
f57d2163 DE |
2530 | return result; |
2531 | } | |
af3768e9 DE |
2532 | |
2533 | ALL_OBJFILES (objfile) | |
2534 | { | |
2535 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
d12307c1 | 2536 | if (result.symbol != NULL) |
f57d2163 DE |
2537 | { |
2538 | /* Still pass NULL for OBJFILE_CONTEXT here. */ | |
d12307c1 PMR |
2539 | symbol_cache_mark_found (bsc, slot, NULL, result.symbol, |
2540 | result.block); | |
f57d2163 DE |
2541 | return result; |
2542 | } | |
af3768e9 DE |
2543 | } |
2544 | ||
f57d2163 DE |
2545 | /* Still pass NULL for OBJFILE_CONTEXT here. */ |
2546 | symbol_cache_mark_not_found (bsc, slot, NULL, name, domain); | |
d12307c1 | 2547 | return (struct block_symbol) {NULL, NULL}; |
af3768e9 DE |
2548 | } |
2549 | ||
19630284 JB |
2550 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2551 | ||
2552 | struct global_sym_lookup_data | |
2553 | { | |
2554 | /* The name of the symbol we are searching for. */ | |
2555 | const char *name; | |
2556 | ||
2557 | /* The domain to use for our search. */ | |
2558 | domain_enum domain; | |
2559 | ||
2560 | /* The field where the callback should store the symbol if found. | |
d12307c1 PMR |
2561 | It should be initialized to {NULL, NULL} before the search is started. */ |
2562 | struct block_symbol result; | |
19630284 JB |
2563 | }; |
2564 | ||
2565 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
2566 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
2567 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
2568 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
2569 | ||
2570 | static int | |
2571 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
2572 | void *cb_data) | |
2573 | { | |
2574 | struct global_sym_lookup_data *data = | |
2575 | (struct global_sym_lookup_data *) cb_data; | |
2576 | ||
d12307c1 PMR |
2577 | gdb_assert (data->result.symbol == NULL |
2578 | && data->result.block == NULL); | |
19630284 | 2579 | |
af3768e9 DE |
2580 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
2581 | data->name, data->domain); | |
19630284 JB |
2582 | |
2583 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2584 | keep going. */ | |
d12307c1 | 2585 | return (data->result.symbol != NULL); |
19630284 JB |
2586 | } |
2587 | ||
cf901d3b | 2588 | /* See symtab.h. */ |
5f9a71c3 | 2589 | |
d12307c1 | 2590 | struct block_symbol |
08724ab7 | 2591 | lookup_global_symbol (const char *name, |
3a40aaa0 | 2592 | const struct block *block, |
21b556f4 | 2593 | const domain_enum domain) |
5f9a71c3 | 2594 | { |
f57d2163 | 2595 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2596 | struct block_symbol result; |
f57d2163 | 2597 | struct objfile *objfile; |
19630284 | 2598 | struct global_sym_lookup_data lookup_data; |
f57d2163 DE |
2599 | struct block_symbol_cache *bsc; |
2600 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2601 | |
6a3ca067 | 2602 | objfile = lookup_objfile_from_block (block); |
f57d2163 DE |
2603 | |
2604 | /* First see if we can find the symbol in the cache. | |
2605 | This works because we use the current objfile to qualify the lookup. */ | |
d12307c1 PMR |
2606 | result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain, |
2607 | &bsc, &slot); | |
2608 | if (result.symbol != NULL) | |
f57d2163 | 2609 | { |
d12307c1 PMR |
2610 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2611 | return (struct block_symbol) {NULL, NULL}; | |
2612 | return result; | |
f57d2163 DE |
2613 | } |
2614 | ||
2615 | /* Call library-specific lookup procedure. */ | |
67ff19f7 | 2616 | if (objfile != NULL) |
d12307c1 | 2617 | result = solib_global_lookup (objfile, name, domain); |
b2fb95e0 | 2618 | |
f57d2163 | 2619 | /* If that didn't work go a global search (of global blocks, heh). */ |
d12307c1 | 2620 | if (result.symbol == NULL) |
f57d2163 DE |
2621 | { |
2622 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2623 | lookup_data.name = name; | |
2624 | lookup_data.domain = domain; | |
2625 | gdbarch_iterate_over_objfiles_in_search_order | |
2626 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
2627 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); | |
d12307c1 | 2628 | result = lookup_data.result; |
f57d2163 | 2629 | } |
6a3ca067 | 2630 | |
d12307c1 PMR |
2631 | if (result.symbol != NULL) |
2632 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2633 | else |
2634 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2635 | ||
d12307c1 | 2636 | return result; |
5f9a71c3 DC |
2637 | } |
2638 | ||
4186eb54 KS |
2639 | int |
2640 | symbol_matches_domain (enum language symbol_language, | |
2641 | domain_enum symbol_domain, | |
2642 | domain_enum domain) | |
2643 | { | |
2644 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2645 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2646 | if (symbol_language == language_cplus | |
2647 | || symbol_language == language_d | |
4186eb54 KS |
2648 | || symbol_language == language_ada) |
2649 | { | |
2650 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2651 | && symbol_domain == STRUCT_DOMAIN) | |
2652 | return 1; | |
2653 | } | |
2654 | /* For all other languages, strict match is required. */ | |
2655 | return (symbol_domain == domain); | |
2656 | } | |
2657 | ||
cf901d3b | 2658 | /* See symtab.h. */ |
c906108c | 2659 | |
ccefe4c4 TT |
2660 | struct type * |
2661 | lookup_transparent_type (const char *name) | |
c906108c | 2662 | { |
ccefe4c4 TT |
2663 | return current_language->la_lookup_transparent_type (name); |
2664 | } | |
9af17804 | 2665 | |
ccefe4c4 TT |
2666 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2667 | "quick" symbol table functions. */ | |
357e46e7 | 2668 | |
ccefe4c4 | 2669 | static struct type * |
f88cb4b6 | 2670 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2671 | const char *name) |
2672 | { | |
43f3e411 | 2673 | struct compunit_symtab *cust; |
346d1dfe | 2674 | const struct blockvector *bv; |
ccefe4c4 TT |
2675 | struct block *block; |
2676 | struct symbol *sym; | |
c906108c | 2677 | |
ccefe4c4 TT |
2678 | if (!objfile->sf) |
2679 | return NULL; | |
43f3e411 DE |
2680 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2681 | STRUCT_DOMAIN); | |
2682 | if (cust == NULL) | |
ccefe4c4 | 2683 | return NULL; |
c906108c | 2684 | |
43f3e411 | 2685 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2686 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2687 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2688 | block_find_non_opaque_type, NULL); | |
2689 | if (sym == NULL) | |
43f3e411 | 2690 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2691 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2692 | return SYMBOL_TYPE (sym); | |
2693 | } | |
08c23b0d | 2694 | |
b2e2f908 DE |
2695 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2696 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2697 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2698 | ||
2699 | static struct type * | |
2700 | basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index, | |
2701 | const char *name) | |
2702 | { | |
2703 | const struct compunit_symtab *cust; | |
2704 | const struct blockvector *bv; | |
2705 | const struct block *block; | |
2706 | const struct symbol *sym; | |
2707 | ||
2708 | ALL_OBJFILE_COMPUNITS (objfile, cust) | |
2709 | { | |
2710 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2711 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2712 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2713 | block_find_non_opaque_type, NULL); | |
2714 | if (sym != NULL) | |
2715 | { | |
2716 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2717 | return SYMBOL_TYPE (sym); | |
2718 | } | |
2719 | } | |
c906108c | 2720 | |
ccefe4c4 | 2721 | return NULL; |
b368761e | 2722 | } |
c906108c | 2723 | |
b368761e DC |
2724 | /* The standard implementation of lookup_transparent_type. This code |
2725 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2726 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2727 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2728 | global blocks. */ |
c906108c SS |
2729 | |
2730 | struct type * | |
b368761e | 2731 | basic_lookup_transparent_type (const char *name) |
c906108c | 2732 | { |
52f0bd74 | 2733 | struct objfile *objfile; |
ccefe4c4 | 2734 | struct type *t; |
c906108c SS |
2735 | |
2736 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2737 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2738 | of the desired name as a global, then do psymtab-to-symtab |
2739 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2740 | |
58b6ab13 | 2741 | ALL_OBJFILES (objfile) |
c5aa993b | 2742 | { |
b2e2f908 DE |
2743 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); |
2744 | if (t) | |
2745 | return t; | |
c5aa993b | 2746 | } |
c906108c | 2747 | |
ccefe4c4 | 2748 | ALL_OBJFILES (objfile) |
c5aa993b | 2749 | { |
ccefe4c4 TT |
2750 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); |
2751 | if (t) | |
2752 | return t; | |
c5aa993b | 2753 | } |
c906108c SS |
2754 | |
2755 | /* Now search the static file-level symbols. | |
2756 | Not strictly correct, but more useful than an error. | |
2757 | Do the symtab's first, then | |
c378eb4e | 2758 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2759 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2760 | conversion on the fly and return the found symbol. */ |
c906108c | 2761 | |
54ec275a | 2762 | ALL_OBJFILES (objfile) |
c5aa993b | 2763 | { |
b2e2f908 DE |
2764 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); |
2765 | if (t) | |
2766 | return t; | |
c5aa993b | 2767 | } |
c906108c | 2768 | |
ccefe4c4 | 2769 | ALL_OBJFILES (objfile) |
c5aa993b | 2770 | { |
ccefe4c4 TT |
2771 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); |
2772 | if (t) | |
2773 | return t; | |
c5aa993b | 2774 | } |
ccefe4c4 | 2775 | |
c906108c SS |
2776 | return (struct type *) 0; |
2777 | } | |
2778 | ||
4eeaa230 | 2779 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
f8eba3c6 TT |
2780 | |
2781 | For each symbol that matches, CALLBACK is called. The symbol and | |
2782 | DATA are passed to the callback. | |
2783 | ||
2784 | If CALLBACK returns zero, the iteration ends. Otherwise, the | |
4eeaa230 | 2785 | search continues. */ |
f8eba3c6 TT |
2786 | |
2787 | void | |
2788 | iterate_over_symbols (const struct block *block, const char *name, | |
2789 | const domain_enum domain, | |
8e704927 | 2790 | symbol_found_callback_ftype *callback, |
f8eba3c6 TT |
2791 | void *data) |
2792 | { | |
4eeaa230 DE |
2793 | struct block_iterator iter; |
2794 | struct symbol *sym; | |
f8eba3c6 | 2795 | |
358d6ab3 | 2796 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2797 | { |
4186eb54 KS |
2798 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2799 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2800 | { |
4eeaa230 DE |
2801 | if (!callback (sym, data)) |
2802 | return; | |
f8eba3c6 | 2803 | } |
f8eba3c6 TT |
2804 | } |
2805 | } | |
2806 | ||
43f3e411 DE |
2807 | /* Find the compunit symtab associated with PC and SECTION. |
2808 | This will read in debug info as necessary. */ | |
c906108c | 2809 | |
43f3e411 DE |
2810 | struct compunit_symtab * |
2811 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2812 | { |
43f3e411 DE |
2813 | struct compunit_symtab *cust; |
2814 | struct compunit_symtab *best_cust = NULL; | |
52f0bd74 | 2815 | struct objfile *objfile; |
c906108c | 2816 | CORE_ADDR distance = 0; |
77e371c0 | 2817 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2818 | |
2819 | /* If we know that this is not a text address, return failure. This is | |
2820 | necessary because we loop based on the block's high and low code | |
2821 | addresses, which do not include the data ranges, and because | |
2822 | we call find_pc_sect_psymtab which has a similar restriction based | |
2823 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 TT |
2824 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
2825 | if (msymbol.minsym | |
2826 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
2827 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
2828 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
2829 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
2830 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
8a48e967 | 2831 | return NULL; |
c906108c SS |
2832 | |
2833 | /* Search all symtabs for the one whose file contains our address, and which | |
2834 | is the smallest of all the ones containing the address. This is designed | |
2835 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2836 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2837 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2838 | ||
2839 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2840 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2841 | been read in already via the dependency mechanism. |
2842 | It might be swifter to create several symtabs with the same name | |
2843 | like xcoff does (I'm not sure). | |
2844 | ||
2845 | It also happens for objfiles that have their functions reordered. | |
2846 | For these, the symtab we are looking for is not necessarily read in. */ | |
2847 | ||
43f3e411 | 2848 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 2849 | { |
43f3e411 DE |
2850 | struct block *b; |
2851 | const struct blockvector *bv; | |
2852 | ||
2853 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
c5aa993b | 2854 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
c906108c | 2855 | |
c5aa993b | 2856 | if (BLOCK_START (b) <= pc |
c5aa993b | 2857 | && BLOCK_END (b) > pc |
c5aa993b JM |
2858 | && (distance == 0 |
2859 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2860 | { | |
2861 | /* For an objfile that has its functions reordered, | |
2862 | find_pc_psymtab will find the proper partial symbol table | |
2863 | and we simply return its corresponding symtab. */ | |
2864 | /* In order to better support objfiles that contain both | |
2865 | stabs and coff debugging info, we continue on if a psymtab | |
c378eb4e | 2866 | can't be found. */ |
ccefe4c4 | 2867 | if ((objfile->flags & OBJF_REORDERED) && objfile->sf) |
c5aa993b | 2868 | { |
43f3e411 | 2869 | struct compunit_symtab *result; |
433759f7 | 2870 | |
ccefe4c4 | 2871 | result |
43f3e411 DE |
2872 | = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2873 | msymbol, | |
2874 | pc, section, | |
2875 | 0); | |
2876 | if (result != NULL) | |
ccefe4c4 | 2877 | return result; |
c5aa993b JM |
2878 | } |
2879 | if (section != 0) | |
2880 | { | |
8157b174 | 2881 | struct block_iterator iter; |
261397f8 | 2882 | struct symbol *sym = NULL; |
c906108c | 2883 | |
de4f826b | 2884 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2885 | { |
261397f8 | 2886 | fixup_symbol_section (sym, objfile); |
e27d198c TT |
2887 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, sym), |
2888 | section)) | |
c5aa993b JM |
2889 | break; |
2890 | } | |
de4f826b | 2891 | if (sym == NULL) |
c378eb4e MS |
2892 | continue; /* No symbol in this symtab matches |
2893 | section. */ | |
c5aa993b JM |
2894 | } |
2895 | distance = BLOCK_END (b) - BLOCK_START (b); | |
43f3e411 | 2896 | best_cust = cust; |
c5aa993b JM |
2897 | } |
2898 | } | |
c906108c | 2899 | |
43f3e411 DE |
2900 | if (best_cust != NULL) |
2901 | return best_cust; | |
c906108c | 2902 | |
072cabfe DE |
2903 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2904 | ||
ccefe4c4 TT |
2905 | ALL_OBJFILES (objfile) |
2906 | { | |
43f3e411 | 2907 | struct compunit_symtab *result; |
433759f7 | 2908 | |
ccefe4c4 TT |
2909 | if (!objfile->sf) |
2910 | continue; | |
43f3e411 DE |
2911 | result = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2912 | msymbol, | |
2913 | pc, section, | |
2914 | 1); | |
2915 | if (result != NULL) | |
ccefe4c4 TT |
2916 | return result; |
2917 | } | |
2918 | ||
2919 | return NULL; | |
c906108c SS |
2920 | } |
2921 | ||
43f3e411 DE |
2922 | /* Find the compunit symtab associated with PC. |
2923 | This will read in debug info as necessary. | |
2924 | Backward compatibility, no section. */ | |
c906108c | 2925 | |
43f3e411 DE |
2926 | struct compunit_symtab * |
2927 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2928 | { |
43f3e411 | 2929 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2930 | } |
c906108c | 2931 | \f |
c5aa993b | 2932 | |
7e73cedf | 2933 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
2934 | Return a structure containing a symtab pointer, a line number, |
2935 | and a pc range for the entire source line. | |
2936 | The value's .pc field is NOT the specified pc. | |
2937 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
2938 | use the line that ends there. Otherwise, in that case, the line | |
2939 | that begins there is used. */ | |
2940 | ||
2941 | /* The big complication here is that a line may start in one file, and end just | |
2942 | before the start of another file. This usually occurs when you #include | |
2943 | code in the middle of a subroutine. To properly find the end of a line's PC | |
2944 | range, we must search all symtabs associated with this compilation unit, and | |
2945 | find the one whose first PC is closer than that of the next line in this | |
2946 | symtab. */ | |
2947 | ||
2948 | /* If it's worth the effort, we could be using a binary search. */ | |
2949 | ||
2950 | struct symtab_and_line | |
714835d5 | 2951 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 2952 | { |
43f3e411 DE |
2953 | struct compunit_symtab *cust; |
2954 | struct symtab *iter_s; | |
52f0bd74 AC |
2955 | struct linetable *l; |
2956 | int len; | |
2957 | int i; | |
2958 | struct linetable_entry *item; | |
c906108c | 2959 | struct symtab_and_line val; |
346d1dfe | 2960 | const struct blockvector *bv; |
7cbd4a93 | 2961 | struct bound_minimal_symbol msymbol; |
c906108c SS |
2962 | |
2963 | /* Info on best line seen so far, and where it starts, and its file. */ | |
2964 | ||
2965 | struct linetable_entry *best = NULL; | |
2966 | CORE_ADDR best_end = 0; | |
2967 | struct symtab *best_symtab = 0; | |
2968 | ||
2969 | /* Store here the first line number | |
2970 | of a file which contains the line at the smallest pc after PC. | |
2971 | If we don't find a line whose range contains PC, | |
2972 | we will use a line one less than this, | |
2973 | with a range from the start of that file to the first line's pc. */ | |
2974 | struct linetable_entry *alt = NULL; | |
c906108c SS |
2975 | |
2976 | /* Info on best line seen in this file. */ | |
2977 | ||
2978 | struct linetable_entry *prev; | |
2979 | ||
2980 | /* If this pc is not from the current frame, | |
2981 | it is the address of the end of a call instruction. | |
2982 | Quite likely that is the start of the following statement. | |
2983 | But what we want is the statement containing the instruction. | |
2984 | Fudge the pc to make sure we get that. */ | |
2985 | ||
fe39c653 | 2986 | init_sal (&val); /* initialize to zeroes */ |
c906108c | 2987 | |
6c95b8df PA |
2988 | val.pspace = current_program_space; |
2989 | ||
b77b1eb7 JB |
2990 | /* It's tempting to assume that, if we can't find debugging info for |
2991 | any function enclosing PC, that we shouldn't search for line | |
2992 | number info, either. However, GAS can emit line number info for | |
2993 | assembly files --- very helpful when debugging hand-written | |
2994 | assembly code. In such a case, we'd have no debug info for the | |
2995 | function, but we would have line info. */ | |
648f4f79 | 2996 | |
c906108c SS |
2997 | if (notcurrent) |
2998 | pc -= 1; | |
2999 | ||
c5aa993b | 3000 | /* elz: added this because this function returned the wrong |
c906108c | 3001 | information if the pc belongs to a stub (import/export) |
c378eb4e | 3002 | to call a shlib function. This stub would be anywhere between |
9af17804 | 3003 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
3004 | taken to be the one of the line before the pc. */ |
3005 | ||
c906108c | 3006 | /* RT: Further explanation: |
c5aa993b | 3007 | |
c906108c SS |
3008 | * We have stubs (trampolines) inserted between procedures. |
3009 | * | |
3010 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
3011 | * exists in the main image. | |
3012 | * | |
3013 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 3014 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
3015 | * the others appear as text. E.g.: |
3016 | * | |
9af17804 | 3017 | * Minimal symbol table for main image |
c906108c SS |
3018 | * main: code for main (text symbol) |
3019 | * shr1: stub (trampoline symbol) | |
3020 | * foo: code for foo (text symbol) | |
3021 | * ... | |
3022 | * Minimal symbol table for "shr1" image: | |
3023 | * ... | |
3024 | * shr1: code for shr1 (text symbol) | |
3025 | * ... | |
3026 | * | |
3027 | * So the code below is trying to detect if we are in the stub | |
3028 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
3029 | * and if found, do the symbolization from the real-code address | |
3030 | * rather than the stub address. | |
3031 | * | |
3032 | * Assumptions being made about the minimal symbol table: | |
3033 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3034 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3035 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3036 | * symbol (the "foo" text symbol for example) and will not |
3037 | * return the trampoline. | |
3038 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3039 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3040 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3041 | * check for the address being the same, to avoid an |
3042 | * infinite recursion. | |
3043 | */ | |
c5aa993b | 3044 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3045 | if (msymbol.minsym != NULL) |
3046 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3047 | { |
77e371c0 | 3048 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3049 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3050 | NULL); |
3051 | ||
3052 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3053 | /* I eliminated this warning since it is coming out |
3054 | * in the following situation: | |
3055 | * gdb shmain // test program with shared libraries | |
3056 | * (gdb) break shr1 // function in shared lib | |
3057 | * Warning: In stub for ... | |
9af17804 | 3058 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3059 | * so of course we can't find the real func/line info, |
3060 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3061 | * So I commented out the warning. RT */ |
3e43a32a | 3062 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3063 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3064 | ; | |
c5aa993b | 3065 | /* fall through */ |
77e371c0 TT |
3066 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3067 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3068 | /* Avoid infinite recursion */ |
c378eb4e | 3069 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3070 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3071 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3072 | ; | |
c5aa993b JM |
3073 | /* fall through */ |
3074 | else | |
77e371c0 | 3075 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3076 | } |
c906108c SS |
3077 | |
3078 | ||
43f3e411 DE |
3079 | cust = find_pc_sect_compunit_symtab (pc, section); |
3080 | if (cust == NULL) | |
c906108c | 3081 | { |
c378eb4e | 3082 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3083 | if (notcurrent) |
3084 | pc++; | |
3085 | val.pc = pc; | |
3086 | return val; | |
3087 | } | |
3088 | ||
43f3e411 | 3089 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3090 | |
3091 | /* Look at all the symtabs that share this blockvector. | |
3092 | They all have the same apriori range, that we found was right; | |
3093 | but they have different line tables. */ | |
3094 | ||
43f3e411 | 3095 | ALL_COMPUNIT_FILETABS (cust, iter_s) |
c906108c SS |
3096 | { |
3097 | /* Find the best line in this symtab. */ | |
43f3e411 | 3098 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3099 | if (!l) |
c5aa993b | 3100 | continue; |
c906108c SS |
3101 | len = l->nitems; |
3102 | if (len <= 0) | |
3103 | { | |
3104 | /* I think len can be zero if the symtab lacks line numbers | |
3105 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3106 | I'm not sure which, and maybe it depends on the symbol | |
3107 | reader). */ | |
3108 | continue; | |
3109 | } | |
3110 | ||
3111 | prev = NULL; | |
c378eb4e | 3112 | item = l->item; /* Get first line info. */ |
c906108c SS |
3113 | |
3114 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3115 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3116 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3117 | alt = item; |
c906108c SS |
3118 | |
3119 | for (i = 0; i < len; i++, item++) | |
3120 | { | |
3121 | /* Leave prev pointing to the linetable entry for the last line | |
3122 | that started at or before PC. */ | |
3123 | if (item->pc > pc) | |
3124 | break; | |
3125 | ||
3126 | prev = item; | |
3127 | } | |
3128 | ||
3129 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3130 | item points at the next line. If we ran off the end of the linetable |
3131 | (pc >= start of the last line), then prev == item. If pc < start of | |
3132 | the first line, prev will not be set. */ | |
c906108c SS |
3133 | |
3134 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3135 | If so, record this file, and its best line, as best so far. Don't |
3136 | save prev if it represents the end of a function (i.e. line number | |
3137 | 0) instead of a real line. */ | |
c906108c | 3138 | |
083ae935 | 3139 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3140 | { |
3141 | best = prev; | |
43f3e411 | 3142 | best_symtab = iter_s; |
25d53da1 KB |
3143 | |
3144 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3145 | if (best_end <= best->pc) | |
3146 | best_end = 0; | |
c906108c | 3147 | } |
25d53da1 KB |
3148 | |
3149 | /* If another line (denoted by ITEM) is in the linetable and its | |
3150 | PC is after BEST's PC, but before the current BEST_END, then | |
3151 | use ITEM's PC as the new best_end. */ | |
3152 | if (best && i < len && item->pc > best->pc | |
3153 | && (best_end == 0 || best_end > item->pc)) | |
3154 | best_end = item->pc; | |
c906108c SS |
3155 | } |
3156 | ||
3157 | if (!best_symtab) | |
3158 | { | |
e86e87f7 DJ |
3159 | /* If we didn't find any line number info, just return zeros. |
3160 | We used to return alt->line - 1 here, but that could be | |
3161 | anywhere; if we don't have line number info for this PC, | |
3162 | don't make some up. */ | |
3163 | val.pc = pc; | |
c906108c | 3164 | } |
e8717518 FF |
3165 | else if (best->line == 0) |
3166 | { | |
3167 | /* If our best fit is in a range of PC's for which no line | |
3168 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3169 | find any valid line information. */ |
e8717518 FF |
3170 | val.pc = pc; |
3171 | } | |
c906108c SS |
3172 | else |
3173 | { | |
3174 | val.symtab = best_symtab; | |
3175 | val.line = best->line; | |
3176 | val.pc = best->pc; | |
3177 | if (best_end && (!alt || best_end < alt->pc)) | |
3178 | val.end = best_end; | |
3179 | else if (alt) | |
3180 | val.end = alt->pc; | |
3181 | else | |
3182 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3183 | } | |
3184 | val.section = section; | |
3185 | return val; | |
3186 | } | |
3187 | ||
c378eb4e | 3188 | /* Backward compatibility (no section). */ |
c906108c SS |
3189 | |
3190 | struct symtab_and_line | |
fba45db2 | 3191 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3192 | { |
714835d5 | 3193 | struct obj_section *section; |
c906108c SS |
3194 | |
3195 | section = find_pc_overlay (pc); | |
3196 | if (pc_in_unmapped_range (pc, section)) | |
3197 | pc = overlay_mapped_address (pc, section); | |
3198 | return find_pc_sect_line (pc, section, notcurrent); | |
3199 | } | |
34248c3a DE |
3200 | |
3201 | /* See symtab.h. */ | |
3202 | ||
3203 | struct symtab * | |
3204 | find_pc_line_symtab (CORE_ADDR pc) | |
3205 | { | |
3206 | struct symtab_and_line sal; | |
3207 | ||
3208 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3209 | There are currently no callers that ever pass non-zero. */ | |
3210 | sal = find_pc_line (pc, 0); | |
3211 | return sal.symtab; | |
3212 | } | |
c906108c | 3213 | \f |
c906108c SS |
3214 | /* Find line number LINE in any symtab whose name is the same as |
3215 | SYMTAB. | |
3216 | ||
3217 | If found, return the symtab that contains the linetable in which it was | |
3218 | found, set *INDEX to the index in the linetable of the best entry | |
3219 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3220 | exact match. | |
3221 | ||
3222 | If not found, return NULL. */ | |
3223 | ||
50641945 | 3224 | struct symtab * |
433759f7 MS |
3225 | find_line_symtab (struct symtab *symtab, int line, |
3226 | int *index, int *exact_match) | |
c906108c | 3227 | { |
6f43c46f | 3228 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3229 | |
3230 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3231 | so far seen. */ | |
3232 | ||
3233 | int best_index; | |
3234 | struct linetable *best_linetable; | |
3235 | struct symtab *best_symtab; | |
3236 | ||
3237 | /* First try looking it up in the given symtab. */ | |
8435453b | 3238 | best_linetable = SYMTAB_LINETABLE (symtab); |
c906108c | 3239 | best_symtab = symtab; |
f8eba3c6 | 3240 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3241 | if (best_index < 0 || !exact) |
3242 | { | |
3243 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3244 | another symtab with the same name. In the case of xcoff, |
3245 | multiple csects for one source file (produced by IBM's FORTRAN | |
3246 | compiler) produce multiple symtabs (this is unavoidable | |
3247 | assuming csects can be at arbitrary places in memory and that | |
3248 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3249 | |
3250 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3251 | or 0 if none has been seen so far. |
3252 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3253 | int best; |
3254 | ||
3255 | struct objfile *objfile; | |
43f3e411 | 3256 | struct compunit_symtab *cu; |
c906108c SS |
3257 | struct symtab *s; |
3258 | ||
3259 | if (best_index >= 0) | |
3260 | best = best_linetable->item[best_index].line; | |
3261 | else | |
3262 | best = 0; | |
3263 | ||
ccefe4c4 | 3264 | ALL_OBJFILES (objfile) |
51432cca | 3265 | { |
ccefe4c4 | 3266 | if (objfile->sf) |
652a8996 | 3267 | objfile->sf->qf->expand_symtabs_with_fullname (objfile, |
05cba821 | 3268 | symtab_to_fullname (symtab)); |
51432cca CES |
3269 | } |
3270 | ||
43f3e411 | 3271 | ALL_FILETABS (objfile, cu, s) |
c5aa993b JM |
3272 | { |
3273 | struct linetable *l; | |
3274 | int ind; | |
c906108c | 3275 | |
3ffc00b8 | 3276 | if (FILENAME_CMP (symtab->filename, s->filename) != 0) |
c5aa993b | 3277 | continue; |
d180bcbd JK |
3278 | if (FILENAME_CMP (symtab_to_fullname (symtab), |
3279 | symtab_to_fullname (s)) != 0) | |
3ffc00b8 | 3280 | continue; |
8435453b | 3281 | l = SYMTAB_LINETABLE (s); |
f8eba3c6 | 3282 | ind = find_line_common (l, line, &exact, 0); |
c5aa993b JM |
3283 | if (ind >= 0) |
3284 | { | |
3285 | if (exact) | |
3286 | { | |
3287 | best_index = ind; | |
3288 | best_linetable = l; | |
3289 | best_symtab = s; | |
3290 | goto done; | |
3291 | } | |
3292 | if (best == 0 || l->item[ind].line < best) | |
3293 | { | |
3294 | best = l->item[ind].line; | |
3295 | best_index = ind; | |
3296 | best_linetable = l; | |
3297 | best_symtab = s; | |
3298 | } | |
3299 | } | |
3300 | } | |
c906108c | 3301 | } |
c5aa993b | 3302 | done: |
c906108c SS |
3303 | if (best_index < 0) |
3304 | return NULL; | |
3305 | ||
3306 | if (index) | |
3307 | *index = best_index; | |
3308 | if (exact_match) | |
3309 | *exact_match = exact; | |
3310 | ||
3311 | return best_symtab; | |
3312 | } | |
f8eba3c6 TT |
3313 | |
3314 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
3315 | exactly match LINE. Returns NULL if there are no exact matches, | |
3316 | but updates BEST_ITEM in this case. */ | |
3317 | ||
3318 | VEC (CORE_ADDR) * | |
3319 | find_pcs_for_symtab_line (struct symtab *symtab, int line, | |
3320 | struct linetable_entry **best_item) | |
3321 | { | |
c656bca5 | 3322 | int start = 0; |
f8eba3c6 TT |
3323 | VEC (CORE_ADDR) *result = NULL; |
3324 | ||
3325 | /* First, collect all the PCs that are at this line. */ | |
3326 | while (1) | |
3327 | { | |
3328 | int was_exact; | |
3329 | int idx; | |
3330 | ||
8435453b DE |
3331 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3332 | start); | |
f8eba3c6 TT |
3333 | if (idx < 0) |
3334 | break; | |
3335 | ||
3336 | if (!was_exact) | |
3337 | { | |
8435453b | 3338 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3339 | |
3340 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3341 | *best_item = item; | |
3342 | ||
3343 | break; | |
3344 | } | |
3345 | ||
8435453b DE |
3346 | VEC_safe_push (CORE_ADDR, result, |
3347 | SYMTAB_LINETABLE (symtab)->item[idx].pc); | |
f8eba3c6 TT |
3348 | start = idx + 1; |
3349 | } | |
3350 | ||
3351 | return result; | |
3352 | } | |
3353 | ||
c906108c SS |
3354 | \f |
3355 | /* Set the PC value for a given source file and line number and return true. | |
3356 | Returns zero for invalid line number (and sets the PC to 0). | |
3357 | The source file is specified with a struct symtab. */ | |
3358 | ||
3359 | int | |
fba45db2 | 3360 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3361 | { |
3362 | struct linetable *l; | |
3363 | int ind; | |
3364 | ||
3365 | *pc = 0; | |
3366 | if (symtab == 0) | |
3367 | return 0; | |
3368 | ||
3369 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3370 | if (symtab != NULL) | |
3371 | { | |
8435453b | 3372 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3373 | *pc = l->item[ind].pc; |
3374 | return 1; | |
3375 | } | |
3376 | else | |
3377 | return 0; | |
3378 | } | |
3379 | ||
3380 | /* Find the range of pc values in a line. | |
3381 | Store the starting pc of the line into *STARTPTR | |
3382 | and the ending pc (start of next line) into *ENDPTR. | |
3383 | Returns 1 to indicate success. | |
3384 | Returns 0 if could not find the specified line. */ | |
3385 | ||
3386 | int | |
fba45db2 KB |
3387 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3388 | CORE_ADDR *endptr) | |
c906108c SS |
3389 | { |
3390 | CORE_ADDR startaddr; | |
3391 | struct symtab_and_line found_sal; | |
3392 | ||
3393 | startaddr = sal.pc; | |
c5aa993b | 3394 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3395 | return 0; |
3396 | ||
3397 | /* This whole function is based on address. For example, if line 10 has | |
3398 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3399 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3400 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3401 | This also insures that we never give a range like "starts at 0x134 | |
3402 | and ends at 0x12c". */ | |
3403 | ||
3404 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3405 | if (found_sal.line != sal.line) | |
3406 | { | |
3407 | /* The specified line (sal) has zero bytes. */ | |
3408 | *startptr = found_sal.pc; | |
3409 | *endptr = found_sal.pc; | |
3410 | } | |
3411 | else | |
3412 | { | |
3413 | *startptr = found_sal.pc; | |
3414 | *endptr = found_sal.end; | |
3415 | } | |
3416 | return 1; | |
3417 | } | |
3418 | ||
3419 | /* Given a line table and a line number, return the index into the line | |
3420 | table for the pc of the nearest line whose number is >= the specified one. | |
3421 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3422 | START is the index at which to start searching the line table. |
c906108c SS |
3423 | |
3424 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3425 | ||
3426 | static int | |
aa1ee363 | 3427 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3428 | int *exact_match, int start) |
c906108c | 3429 | { |
52f0bd74 AC |
3430 | int i; |
3431 | int len; | |
c906108c SS |
3432 | |
3433 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3434 | or 0 if none has been seen so far. | |
3435 | BEST_INDEX identifies the item for it. */ | |
3436 | ||
3437 | int best_index = -1; | |
3438 | int best = 0; | |
3439 | ||
b7589f7d DJ |
3440 | *exact_match = 0; |
3441 | ||
c906108c SS |
3442 | if (lineno <= 0) |
3443 | return -1; | |
3444 | if (l == 0) | |
3445 | return -1; | |
3446 | ||
3447 | len = l->nitems; | |
f8eba3c6 | 3448 | for (i = start; i < len; i++) |
c906108c | 3449 | { |
aa1ee363 | 3450 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3451 | |
3452 | if (item->line == lineno) | |
3453 | { | |
3454 | /* Return the first (lowest address) entry which matches. */ | |
3455 | *exact_match = 1; | |
3456 | return i; | |
3457 | } | |
3458 | ||
3459 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3460 | { | |
3461 | best = item->line; | |
3462 | best_index = i; | |
3463 | } | |
3464 | } | |
3465 | ||
3466 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3467 | return best_index; |
3468 | } | |
3469 | ||
3470 | int | |
fba45db2 | 3471 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3472 | { |
3473 | struct symtab_and_line sal; | |
433759f7 | 3474 | |
c906108c SS |
3475 | sal = find_pc_line (pc, 0); |
3476 | *startptr = sal.pc; | |
3477 | *endptr = sal.end; | |
3478 | return sal.symtab != 0; | |
3479 | } | |
3480 | ||
aab2f208 DE |
3481 | /* Given a function symbol SYM, find the symtab and line for the start |
3482 | of the function. | |
3483 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
6e22494e JK |
3484 | of real code inside the function. |
3485 | This function should return SALs matching those from minsym_found, | |
3486 | otherwise false multiple-locations breakpoints could be placed. */ | |
aab2f208 DE |
3487 | |
3488 | struct symtab_and_line | |
3489 | find_function_start_sal (struct symbol *sym, int funfirstline) | |
3490 | { | |
3491 | struct symtab_and_line sal; | |
08be3fe3 | 3492 | struct obj_section *section; |
aab2f208 DE |
3493 | |
3494 | fixup_symbol_section (sym, NULL); | |
08be3fe3 DE |
3495 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); |
3496 | sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), section, 0); | |
aab2f208 | 3497 | |
6e22494e JK |
3498 | if (funfirstline && sal.symtab != NULL |
3499 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3500 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3501 | { | |
141c5cc4 JK |
3502 | struct gdbarch *gdbarch = symbol_arch (sym); |
3503 | ||
6e22494e | 3504 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
141c5cc4 JK |
3505 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3506 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3507 | return sal; |
3508 | } | |
3509 | ||
aab2f208 DE |
3510 | /* We always should have a line for the function start address. |
3511 | If we don't, something is odd. Create a plain SAL refering | |
3512 | just the PC and hope that skip_prologue_sal (if requested) | |
3513 | can find a line number for after the prologue. */ | |
3514 | if (sal.pc < BLOCK_START (SYMBOL_BLOCK_VALUE (sym))) | |
3515 | { | |
3516 | init_sal (&sal); | |
3517 | sal.pspace = current_program_space; | |
3518 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
08be3fe3 | 3519 | sal.section = section; |
aab2f208 DE |
3520 | } |
3521 | ||
3522 | if (funfirstline) | |
3523 | skip_prologue_sal (&sal); | |
3524 | ||
3525 | return sal; | |
3526 | } | |
3527 | ||
8c7a1ee8 EZ |
3528 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3529 | address for that function that has an entry in SYMTAB's line info | |
3530 | table. If such an entry cannot be found, return FUNC_ADDR | |
3531 | unaltered. */ | |
eca864fe | 3532 | |
70221824 | 3533 | static CORE_ADDR |
8c7a1ee8 EZ |
3534 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3535 | { | |
3536 | CORE_ADDR func_start, func_end; | |
3537 | struct linetable *l; | |
952a6d41 | 3538 | int i; |
8c7a1ee8 EZ |
3539 | |
3540 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3541 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3542 | if (l == NULL) |
3543 | return func_addr; | |
3544 | ||
3545 | /* Get the range for the function's PC values, or give up if we | |
3546 | cannot, for some reason. */ | |
3547 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3548 | return func_addr; | |
3549 | ||
3550 | /* Linetable entries are ordered by PC values, see the commentary in | |
3551 | symtab.h where `struct linetable' is defined. Thus, the first | |
3552 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3553 | address we are looking for. */ | |
3554 | for (i = 0; i < l->nitems; i++) | |
3555 | { | |
3556 | struct linetable_entry *item = &(l->item[i]); | |
3557 | ||
3558 | /* Don't use line numbers of zero, they mark special entries in | |
3559 | the table. See the commentary on symtab.h before the | |
3560 | definition of struct linetable. */ | |
3561 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3562 | return item->pc; | |
3563 | } | |
3564 | ||
3565 | return func_addr; | |
3566 | } | |
3567 | ||
059acae7 UW |
3568 | /* Adjust SAL to the first instruction past the function prologue. |
3569 | If the PC was explicitly specified, the SAL is not changed. | |
3570 | If the line number was explicitly specified, at most the SAL's PC | |
3571 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3572 | |
059acae7 UW |
3573 | void |
3574 | skip_prologue_sal (struct symtab_and_line *sal) | |
3575 | { | |
3576 | struct symbol *sym; | |
3577 | struct symtab_and_line start_sal; | |
3578 | struct cleanup *old_chain; | |
8be455d7 | 3579 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3580 | struct obj_section *section; |
3581 | const char *name; | |
3582 | struct objfile *objfile; | |
3583 | struct gdbarch *gdbarch; | |
3977b71f | 3584 | const struct block *b, *function_block; |
8be455d7 | 3585 | int force_skip, skip; |
c906108c | 3586 | |
a4b411d6 | 3587 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3588 | if (sal->explicit_pc) |
3589 | return; | |
6c95b8df PA |
3590 | |
3591 | old_chain = save_current_space_and_thread (); | |
059acae7 | 3592 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3593 | |
059acae7 UW |
3594 | sym = find_pc_sect_function (sal->pc, sal->section); |
3595 | if (sym != NULL) | |
bccdca4a | 3596 | { |
059acae7 UW |
3597 | fixup_symbol_section (sym, NULL); |
3598 | ||
08be3fe3 | 3599 | objfile = symbol_objfile (sym); |
059acae7 | 3600 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3601 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3602 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3603 | } |
059acae7 UW |
3604 | else |
3605 | { | |
7c7b6655 TT |
3606 | struct bound_minimal_symbol msymbol |
3607 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3608 | |
7c7b6655 | 3609 | if (msymbol.minsym == NULL) |
059acae7 UW |
3610 | { |
3611 | do_cleanups (old_chain); | |
3612 | return; | |
3613 | } | |
3614 | ||
7c7b6655 | 3615 | objfile = msymbol.objfile; |
77e371c0 | 3616 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3617 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3618 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3619 | } |
3620 | ||
3621 | gdbarch = get_objfile_arch (objfile); | |
3622 | ||
8be455d7 JK |
3623 | /* Process the prologue in two passes. In the first pass try to skip the |
3624 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3625 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3626 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3627 | |
8be455d7 JK |
3628 | skip = 1; |
3629 | force_skip = 1; | |
059acae7 | 3630 | |
8be455d7 JK |
3631 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3632 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3633 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3634 | if (sym != NULL |
3635 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3636 | force_skip = 0; |
059acae7 | 3637 | |
8be455d7 JK |
3638 | saved_pc = pc; |
3639 | do | |
c906108c | 3640 | { |
8be455d7 | 3641 | pc = saved_pc; |
4309257c | 3642 | |
8be455d7 JK |
3643 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3644 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3645 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3646 | pc = overlay_unmapped_address (pc, section); | |
3647 | ||
3648 | /* Skip "first line" of function (which is actually its prologue). */ | |
3649 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3650 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3651 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 JK |
3652 | if (skip) |
3653 | pc = gdbarch_skip_prologue (gdbarch, pc); | |
3654 | ||
3655 | /* For overlays, map pc back into its mapped VMA range. */ | |
3656 | pc = overlay_mapped_address (pc, section); | |
3657 | ||
3658 | /* Calculate line number. */ | |
059acae7 | 3659 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3660 | |
3661 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3662 | line is still part of the same function. */ | |
3663 | if (skip && start_sal.pc != pc | |
b1d96efd JK |
3664 | && (sym ? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
3665 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
7cbd4a93 TT |
3666 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3667 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3668 | { |
3669 | /* First pc of next line */ | |
3670 | pc = start_sal.end; | |
3671 | /* Recalculate the line number (might not be N+1). */ | |
3672 | start_sal = find_pc_sect_line (pc, section, 0); | |
3673 | } | |
3674 | ||
3675 | /* On targets with executable formats that don't have a concept of | |
3676 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3677 | to `__main' in `main' between the prologue and before user | |
3678 | code. */ | |
3679 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3680 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3681 | { |
3682 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3683 | /* Recalculate the line number (might not be N+1). */ | |
3684 | start_sal = find_pc_sect_line (pc, section, 0); | |
3685 | force_skip = 1; | |
3686 | } | |
4309257c | 3687 | } |
8be455d7 | 3688 | while (!force_skip && skip--); |
4309257c | 3689 | |
8c7a1ee8 EZ |
3690 | /* If we still don't have a valid source line, try to find the first |
3691 | PC in the lineinfo table that belongs to the same function. This | |
3692 | happens with COFF debug info, which does not seem to have an | |
3693 | entry in lineinfo table for the code after the prologue which has | |
3694 | no direct relation to source. For example, this was found to be | |
3695 | the case with the DJGPP target using "gcc -gcoff" when the | |
3696 | compiler inserted code after the prologue to make sure the stack | |
3697 | is aligned. */ | |
8be455d7 | 3698 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3699 | { |
08be3fe3 | 3700 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3701 | /* Recalculate the line number. */ |
059acae7 | 3702 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3703 | } |
3704 | ||
059acae7 UW |
3705 | do_cleanups (old_chain); |
3706 | ||
3707 | /* If we're already past the prologue, leave SAL unchanged. Otherwise | |
3708 | forward SAL to the end of the prologue. */ | |
3709 | if (sal->pc >= pc) | |
3710 | return; | |
3711 | ||
3712 | sal->pc = pc; | |
3713 | sal->section = section; | |
3714 | ||
3715 | /* Unless the explicit_line flag was set, update the SAL line | |
3716 | and symtab to correspond to the modified PC location. */ | |
3717 | if (sal->explicit_line) | |
3718 | return; | |
3719 | ||
3720 | sal->symtab = start_sal.symtab; | |
3721 | sal->line = start_sal.line; | |
3722 | sal->end = start_sal.end; | |
c906108c | 3723 | |
edb3359d DJ |
3724 | /* Check if we are now inside an inlined function. If we can, |
3725 | use the call site of the function instead. */ | |
059acae7 | 3726 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3727 | function_block = NULL; |
3728 | while (b != NULL) | |
3729 | { | |
3730 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3731 | function_block = b; | |
3732 | else if (BLOCK_FUNCTION (b) != NULL) | |
3733 | break; | |
3734 | b = BLOCK_SUPERBLOCK (b); | |
3735 | } | |
3736 | if (function_block != NULL | |
3737 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3738 | { | |
059acae7 | 3739 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3740 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3741 | } |
c906108c | 3742 | } |
50641945 | 3743 | |
f1f58506 DE |
3744 | /* Given PC at the function's start address, attempt to find the |
3745 | prologue end using SAL information. Return zero if the skip fails. | |
3746 | ||
3747 | A non-optimized prologue traditionally has one SAL for the function | |
3748 | and a second for the function body. A single line function has | |
3749 | them both pointing at the same line. | |
3750 | ||
3751 | An optimized prologue is similar but the prologue may contain | |
3752 | instructions (SALs) from the instruction body. Need to skip those | |
3753 | while not getting into the function body. | |
3754 | ||
3755 | The functions end point and an increasing SAL line are used as | |
3756 | indicators of the prologue's endpoint. | |
3757 | ||
3758 | This code is based on the function refine_prologue_limit | |
3759 | (found in ia64). */ | |
3760 | ||
3761 | CORE_ADDR | |
3762 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3763 | { | |
3764 | struct symtab_and_line prologue_sal; | |
3765 | CORE_ADDR start_pc; | |
3766 | CORE_ADDR end_pc; | |
3767 | const struct block *bl; | |
3768 | ||
3769 | /* Get an initial range for the function. */ | |
3770 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3771 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3772 | ||
3773 | prologue_sal = find_pc_line (start_pc, 0); | |
3774 | if (prologue_sal.line != 0) | |
3775 | { | |
3776 | /* For languages other than assembly, treat two consecutive line | |
3777 | entries at the same address as a zero-instruction prologue. | |
3778 | The GNU assembler emits separate line notes for each instruction | |
3779 | in a multi-instruction macro, but compilers generally will not | |
3780 | do this. */ | |
3781 | if (prologue_sal.symtab->language != language_asm) | |
3782 | { | |
8435453b | 3783 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3784 | int idx = 0; |
3785 | ||
3786 | /* Skip any earlier lines, and any end-of-sequence marker | |
3787 | from a previous function. */ | |
3788 | while (linetable->item[idx].pc != prologue_sal.pc | |
3789 | || linetable->item[idx].line == 0) | |
3790 | idx++; | |
3791 | ||
3792 | if (idx+1 < linetable->nitems | |
3793 | && linetable->item[idx+1].line != 0 | |
3794 | && linetable->item[idx+1].pc == start_pc) | |
3795 | return start_pc; | |
3796 | } | |
3797 | ||
3798 | /* If there is only one sal that covers the entire function, | |
3799 | then it is probably a single line function, like | |
3800 | "foo(){}". */ | |
3801 | if (prologue_sal.end >= end_pc) | |
3802 | return 0; | |
3803 | ||
3804 | while (prologue_sal.end < end_pc) | |
3805 | { | |
3806 | struct symtab_and_line sal; | |
3807 | ||
3808 | sal = find_pc_line (prologue_sal.end, 0); | |
3809 | if (sal.line == 0) | |
3810 | break; | |
3811 | /* Assume that a consecutive SAL for the same (or larger) | |
3812 | line mark the prologue -> body transition. */ | |
3813 | if (sal.line >= prologue_sal.line) | |
3814 | break; | |
3815 | /* Likewise if we are in a different symtab altogether | |
3816 | (e.g. within a file included via #include). */ | |
3817 | if (sal.symtab != prologue_sal.symtab) | |
3818 | break; | |
3819 | ||
3820 | /* The line number is smaller. Check that it's from the | |
3821 | same function, not something inlined. If it's inlined, | |
3822 | then there is no point comparing the line numbers. */ | |
3823 | bl = block_for_pc (prologue_sal.end); | |
3824 | while (bl) | |
3825 | { | |
3826 | if (block_inlined_p (bl)) | |
3827 | break; | |
3828 | if (BLOCK_FUNCTION (bl)) | |
3829 | { | |
3830 | bl = NULL; | |
3831 | break; | |
3832 | } | |
3833 | bl = BLOCK_SUPERBLOCK (bl); | |
3834 | } | |
3835 | if (bl != NULL) | |
3836 | break; | |
3837 | ||
3838 | /* The case in which compiler's optimizer/scheduler has | |
3839 | moved instructions into the prologue. We look ahead in | |
3840 | the function looking for address ranges whose | |
3841 | corresponding line number is less the first one that we | |
3842 | found for the function. This is more conservative then | |
3843 | refine_prologue_limit which scans a large number of SALs | |
3844 | looking for any in the prologue. */ | |
3845 | prologue_sal = sal; | |
3846 | } | |
3847 | } | |
3848 | ||
3849 | if (prologue_sal.end < end_pc) | |
3850 | /* Return the end of this line, or zero if we could not find a | |
3851 | line. */ | |
3852 | return prologue_sal.end; | |
3853 | else | |
3854 | /* Don't return END_PC, which is past the end of the function. */ | |
3855 | return prologue_sal.pc; | |
3856 | } | |
3857 | \f | |
c906108c SS |
3858 | /* If P is of the form "operator[ \t]+..." where `...' is |
3859 | some legitimate operator text, return a pointer to the | |
3860 | beginning of the substring of the operator text. | |
3861 | Otherwise, return "". */ | |
eca864fe | 3862 | |
96142726 TT |
3863 | static const char * |
3864 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3865 | { |
3866 | *end = ""; | |
61012eef | 3867 | if (!startswith (p, "operator")) |
c906108c SS |
3868 | return *end; |
3869 | p += 8; | |
3870 | ||
3871 | /* Don't get faked out by `operator' being part of a longer | |
3872 | identifier. */ | |
c5aa993b | 3873 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3874 | return *end; |
3875 | ||
3876 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
3877 | while (*p == ' ' || *p == '\t') | |
3878 | p++; | |
3879 | ||
c378eb4e | 3880 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 3881 | |
c5aa993b | 3882 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 3883 | { |
96142726 | 3884 | const char *q = p + 1; |
433759f7 | 3885 | |
c5aa993b | 3886 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
3887 | q++; |
3888 | *end = q; | |
3889 | return p; | |
3890 | } | |
3891 | ||
53e8ad3d MS |
3892 | while (*p) |
3893 | switch (*p) | |
3894 | { | |
3895 | case '\\': /* regexp quoting */ | |
3896 | if (p[1] == '*') | |
3897 | { | |
3e43a32a | 3898 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
3899 | *end = p + 3; |
3900 | else /* 'operator\*' */ | |
3901 | *end = p + 2; | |
3902 | return p; | |
3903 | } | |
3904 | else if (p[1] == '[') | |
3905 | { | |
3906 | if (p[2] == ']') | |
3e43a32a MS |
3907 | error (_("mismatched quoting on brackets, " |
3908 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
3909 | else if (p[2] == '\\' && p[3] == ']') |
3910 | { | |
3911 | *end = p + 4; /* 'operator\[\]' */ | |
3912 | return p; | |
3913 | } | |
3914 | else | |
8a3fe4f8 | 3915 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 3916 | } |
9af17804 | 3917 | else |
53e8ad3d | 3918 | { |
c378eb4e | 3919 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
3920 | p++; |
3921 | continue; | |
3922 | } | |
3923 | break; | |
3924 | case '!': | |
3925 | case '=': | |
3926 | case '*': | |
3927 | case '/': | |
3928 | case '%': | |
3929 | case '^': | |
3930 | if (p[1] == '=') | |
3931 | *end = p + 2; | |
3932 | else | |
3933 | *end = p + 1; | |
3934 | return p; | |
3935 | case '<': | |
3936 | case '>': | |
3937 | case '+': | |
3938 | case '-': | |
3939 | case '&': | |
3940 | case '|': | |
3941 | if (p[0] == '-' && p[1] == '>') | |
3942 | { | |
c378eb4e | 3943 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
3944 | if (p[2] == '*') |
3945 | { | |
3946 | *end = p + 3; /* 'operator->*' */ | |
3947 | return p; | |
3948 | } | |
3949 | else if (p[2] == '\\') | |
3950 | { | |
3951 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
3952 | return p; | |
3953 | } | |
3954 | else | |
3955 | { | |
3956 | *end = p + 2; /* 'operator->' */ | |
3957 | return p; | |
3958 | } | |
3959 | } | |
3960 | if (p[1] == '=' || p[1] == p[0]) | |
3961 | *end = p + 2; | |
3962 | else | |
3963 | *end = p + 1; | |
3964 | return p; | |
3965 | case '~': | |
3966 | case ',': | |
c5aa993b | 3967 | *end = p + 1; |
53e8ad3d MS |
3968 | return p; |
3969 | case '(': | |
3970 | if (p[1] != ')') | |
3e43a32a MS |
3971 | error (_("`operator ()' must be specified " |
3972 | "without whitespace in `()'")); | |
c5aa993b | 3973 | *end = p + 2; |
53e8ad3d MS |
3974 | return p; |
3975 | case '?': | |
3976 | if (p[1] != ':') | |
3e43a32a MS |
3977 | error (_("`operator ?:' must be specified " |
3978 | "without whitespace in `?:'")); | |
53e8ad3d MS |
3979 | *end = p + 2; |
3980 | return p; | |
3981 | case '[': | |
3982 | if (p[1] != ']') | |
3e43a32a MS |
3983 | error (_("`operator []' must be specified " |
3984 | "without whitespace in `[]'")); | |
53e8ad3d MS |
3985 | *end = p + 2; |
3986 | return p; | |
3987 | default: | |
8a3fe4f8 | 3988 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
3989 | break; |
3990 | } | |
3991 | ||
c906108c SS |
3992 | *end = ""; |
3993 | return *end; | |
3994 | } | |
c906108c | 3995 | \f |
c5aa993b | 3996 | |
9fdc877b DE |
3997 | /* Cache to watch for file names already seen by filename_seen. */ |
3998 | ||
3999 | struct filename_seen_cache | |
4000 | { | |
4001 | /* Table of files seen so far. */ | |
2908cac6 DE |
4002 | htab_t tab; |
4003 | /* Initial size of the table. It automagically grows from here. */ | |
9fdc877b | 4004 | #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100 |
9fdc877b DE |
4005 | }; |
4006 | ||
4007 | /* filename_seen_cache constructor. */ | |
4008 | ||
4009 | static struct filename_seen_cache * | |
4010 | create_filename_seen_cache (void) | |
4011 | { | |
8d749320 | 4012 | struct filename_seen_cache *cache = XNEW (struct filename_seen_cache); |
9fdc877b | 4013 | |
2908cac6 DE |
4014 | cache->tab = htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE, |
4015 | filename_hash, filename_eq, | |
4016 | NULL, xcalloc, xfree); | |
9fdc877b DE |
4017 | |
4018 | return cache; | |
4019 | } | |
4020 | ||
4021 | /* Empty the cache, but do not delete it. */ | |
4022 | ||
4023 | static void | |
2908cac6 | 4024 | clear_filename_seen_cache (struct filename_seen_cache *cache) |
9fdc877b | 4025 | { |
2908cac6 | 4026 | htab_empty (cache->tab); |
9fdc877b DE |
4027 | } |
4028 | ||
4029 | /* filename_seen_cache destructor. | |
4030 | This takes a void * argument as it is generally used as a cleanup. */ | |
4031 | ||
4032 | static void | |
4033 | delete_filename_seen_cache (void *ptr) | |
4034 | { | |
19ba03f4 | 4035 | struct filename_seen_cache *cache = (struct filename_seen_cache *) ptr; |
9fdc877b | 4036 | |
2908cac6 | 4037 | htab_delete (cache->tab); |
9fdc877b DE |
4038 | xfree (cache); |
4039 | } | |
4040 | ||
a2b6eff5 | 4041 | /* If FILE is not already in the table of files in CACHE, return zero; |
c94fdfd0 | 4042 | otherwise return non-zero. Optionally add FILE to the table if ADD |
2908cac6 DE |
4043 | is non-zero. |
4044 | ||
4045 | NOTE: We don't manage space for FILE, we assume FILE lives as long | |
4046 | as the caller needs. */ | |
eca864fe | 4047 | |
c94fdfd0 | 4048 | static int |
9fdc877b | 4049 | filename_seen (struct filename_seen_cache *cache, const char *file, int add) |
c906108c | 4050 | { |
2908cac6 | 4051 | void **slot; |
c906108c | 4052 | |
c94fdfd0 | 4053 | /* Is FILE in tab? */ |
2908cac6 DE |
4054 | slot = htab_find_slot (cache->tab, file, add ? INSERT : NO_INSERT); |
4055 | if (*slot != NULL) | |
4056 | return 1; | |
c94fdfd0 EZ |
4057 | |
4058 | /* No; maybe add it to tab. */ | |
4059 | if (add) | |
2908cac6 | 4060 | *slot = (char *) file; |
c906108c | 4061 | |
c94fdfd0 EZ |
4062 | return 0; |
4063 | } | |
4064 | ||
9fdc877b DE |
4065 | /* Data structure to maintain printing state for output_source_filename. */ |
4066 | ||
4067 | struct output_source_filename_data | |
4068 | { | |
4069 | /* Cache of what we've seen so far. */ | |
4070 | struct filename_seen_cache *filename_seen_cache; | |
4071 | ||
4072 | /* Flag of whether we're printing the first one. */ | |
4073 | int first; | |
4074 | }; | |
4075 | ||
c94fdfd0 | 4076 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
4077 | NAME is the name to print. |
4078 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 4079 | |
c94fdfd0 | 4080 | static void |
9fdc877b DE |
4081 | output_source_filename (const char *name, |
4082 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
4083 | { |
4084 | /* Since a single source file can result in several partial symbol | |
4085 | tables, we need to avoid printing it more than once. Note: if | |
4086 | some of the psymtabs are read in and some are not, it gets | |
4087 | printed both under "Source files for which symbols have been | |
4088 | read" and "Source files for which symbols will be read in on | |
4089 | demand". I consider this a reasonable way to deal with the | |
4090 | situation. I'm not sure whether this can also happen for | |
4091 | symtabs; it doesn't hurt to check. */ | |
4092 | ||
4093 | /* Was NAME already seen? */ | |
9fdc877b | 4094 | if (filename_seen (data->filename_seen_cache, name, 1)) |
c94fdfd0 EZ |
4095 | { |
4096 | /* Yes; don't print it again. */ | |
4097 | return; | |
4098 | } | |
9fdc877b | 4099 | |
c94fdfd0 | 4100 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
4101 | if (! data->first) |
4102 | printf_filtered (", "); | |
4103 | data->first = 0; | |
c906108c SS |
4104 | |
4105 | wrap_here (""); | |
4106 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 4107 | } |
c906108c | 4108 | |
ccefe4c4 | 4109 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4110 | |
ccefe4c4 | 4111 | static void |
533a737e | 4112 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4113 | void *data) |
4114 | { | |
19ba03f4 SM |
4115 | output_source_filename (fullname ? fullname : filename, |
4116 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4117 | } |
4118 | ||
c906108c | 4119 | static void |
fba45db2 | 4120 | sources_info (char *ignore, int from_tty) |
c906108c | 4121 | { |
43f3e411 | 4122 | struct compunit_symtab *cu; |
52f0bd74 | 4123 | struct symtab *s; |
52f0bd74 | 4124 | struct objfile *objfile; |
9fdc877b DE |
4125 | struct output_source_filename_data data; |
4126 | struct cleanup *cleanups; | |
c5aa993b | 4127 | |
c906108c SS |
4128 | if (!have_full_symbols () && !have_partial_symbols ()) |
4129 | { | |
8a3fe4f8 | 4130 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4131 | } |
c5aa993b | 4132 | |
9fdc877b DE |
4133 | data.filename_seen_cache = create_filename_seen_cache (); |
4134 | cleanups = make_cleanup (delete_filename_seen_cache, | |
4135 | data.filename_seen_cache); | |
4136 | ||
c906108c SS |
4137 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
4138 | ||
9fdc877b | 4139 | data.first = 1; |
43f3e411 | 4140 | ALL_FILETABS (objfile, cu, s) |
c5aa993b | 4141 | { |
d092d1a2 | 4142 | const char *fullname = symtab_to_fullname (s); |
433759f7 | 4143 | |
f35a17b5 | 4144 | output_source_filename (fullname, &data); |
c5aa993b | 4145 | } |
c906108c | 4146 | printf_filtered ("\n\n"); |
c5aa993b | 4147 | |
3e43a32a MS |
4148 | printf_filtered ("Source files for which symbols " |
4149 | "will be read in on demand:\n\n"); | |
c906108c | 4150 | |
9fdc877b DE |
4151 | clear_filename_seen_cache (data.filename_seen_cache); |
4152 | data.first = 1; | |
bb4142cf DE |
4153 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4154 | 1 /*need_fullname*/); | |
c906108c | 4155 | printf_filtered ("\n"); |
9fdc877b DE |
4156 | |
4157 | do_cleanups (cleanups); | |
c906108c SS |
4158 | } |
4159 | ||
fbd9ab74 JK |
4160 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4161 | non-zero compare only lbasename of FILES. */ | |
4162 | ||
c906108c | 4163 | static int |
96142726 | 4164 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4165 | { |
4166 | int i; | |
4167 | ||
4168 | if (file != NULL && nfiles != 0) | |
4169 | { | |
4170 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4171 | { |
fbd9ab74 JK |
4172 | if (compare_filenames_for_search (file, (basenames |
4173 | ? lbasename (files[i]) | |
4174 | : files[i]))) | |
c5aa993b JM |
4175 | return 1; |
4176 | } | |
c906108c SS |
4177 | } |
4178 | else if (nfiles == 0) | |
4179 | return 1; | |
4180 | return 0; | |
4181 | } | |
4182 | ||
c378eb4e | 4183 | /* Free any memory associated with a search. */ |
eca864fe | 4184 | |
c906108c | 4185 | void |
fba45db2 | 4186 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
4187 | { |
4188 | struct symbol_search *p; | |
4189 | struct symbol_search *next; | |
4190 | ||
4191 | for (p = symbols; p != NULL; p = next) | |
4192 | { | |
4193 | next = p->next; | |
b8c9b27d | 4194 | xfree (p); |
c906108c SS |
4195 | } |
4196 | } | |
4197 | ||
5bd98722 | 4198 | static void |
b52109bc | 4199 | do_free_search_symbols_cleanup (void *symbolsp) |
5bd98722 | 4200 | { |
b52109bc DE |
4201 | struct symbol_search *symbols = *(struct symbol_search **) symbolsp; |
4202 | ||
5bd98722 AC |
4203 | free_search_symbols (symbols); |
4204 | } | |
4205 | ||
4206 | struct cleanup * | |
b52109bc | 4207 | make_cleanup_free_search_symbols (struct symbol_search **symbolsp) |
5bd98722 | 4208 | { |
b52109bc | 4209 | return make_cleanup (do_free_search_symbols_cleanup, symbolsp); |
5bd98722 AC |
4210 | } |
4211 | ||
b52109bc | 4212 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4213 | sort symbols, not minimal symbols. */ |
eca864fe | 4214 | |
434d2d4f DJ |
4215 | static int |
4216 | compare_search_syms (const void *sa, const void *sb) | |
4217 | { | |
b52109bc DE |
4218 | struct symbol_search *sym_a = *(struct symbol_search **) sa; |
4219 | struct symbol_search *sym_b = *(struct symbol_search **) sb; | |
4220 | int c; | |
4221 | ||
08be3fe3 DE |
4222 | c = FILENAME_CMP (symbol_symtab (sym_a->symbol)->filename, |
4223 | symbol_symtab (sym_b->symbol)->filename); | |
b52109bc DE |
4224 | if (c != 0) |
4225 | return c; | |
434d2d4f | 4226 | |
b52109bc DE |
4227 | if (sym_a->block != sym_b->block) |
4228 | return sym_a->block - sym_b->block; | |
4229 | ||
4230 | return strcmp (SYMBOL_PRINT_NAME (sym_a->symbol), | |
4231 | SYMBOL_PRINT_NAME (sym_b->symbol)); | |
434d2d4f DJ |
4232 | } |
4233 | ||
b52109bc DE |
4234 | /* Sort the NFOUND symbols in list FOUND and remove duplicates. |
4235 | The duplicates are freed, and the new list is returned in | |
4236 | *NEW_HEAD, *NEW_TAIL. */ | |
4237 | ||
4238 | static void | |
4239 | sort_search_symbols_remove_dups (struct symbol_search *found, int nfound, | |
4240 | struct symbol_search **new_head, | |
4241 | struct symbol_search **new_tail) | |
434d2d4f | 4242 | { |
870f88f7 | 4243 | struct symbol_search **symbols, *symp; |
b52109bc | 4244 | int i, j, nunique; |
434d2d4f | 4245 | |
b52109bc DE |
4246 | gdb_assert (found != NULL && nfound > 0); |
4247 | ||
4248 | /* Build an array out of the list so we can easily sort them. */ | |
8d749320 SM |
4249 | symbols = XNEWVEC (struct symbol_search *, nfound); |
4250 | ||
b52109bc | 4251 | symp = found; |
434d2d4f DJ |
4252 | for (i = 0; i < nfound; i++) |
4253 | { | |
b52109bc DE |
4254 | gdb_assert (symp != NULL); |
4255 | gdb_assert (symp->block >= 0 && symp->block <= 1); | |
434d2d4f DJ |
4256 | symbols[i] = symp; |
4257 | symp = symp->next; | |
4258 | } | |
b52109bc | 4259 | gdb_assert (symp == NULL); |
434d2d4f DJ |
4260 | |
4261 | qsort (symbols, nfound, sizeof (struct symbol_search *), | |
4262 | compare_search_syms); | |
4263 | ||
b52109bc DE |
4264 | /* Collapse out the dups. */ |
4265 | for (i = 1, j = 1; i < nfound; ++i) | |
434d2d4f | 4266 | { |
6b9780fb | 4267 | if (compare_search_syms (&symbols[j - 1], &symbols[i]) != 0) |
b52109bc DE |
4268 | symbols[j++] = symbols[i]; |
4269 | else | |
4270 | xfree (symbols[i]); | |
434d2d4f | 4271 | } |
b52109bc DE |
4272 | nunique = j; |
4273 | symbols[j - 1]->next = NULL; | |
4274 | ||
4275 | /* Rebuild the linked list. */ | |
4276 | for (i = 0; i < nunique - 1; i++) | |
4277 | symbols[i]->next = symbols[i + 1]; | |
4278 | symbols[nunique - 1]->next = NULL; | |
434d2d4f | 4279 | |
b52109bc DE |
4280 | *new_head = symbols[0]; |
4281 | *new_tail = symbols[nunique - 1]; | |
8ed32cc0 | 4282 | xfree (symbols); |
434d2d4f | 4283 | } |
5bd98722 | 4284 | |
ccefe4c4 TT |
4285 | /* An object of this type is passed as the user_data to the |
4286 | expand_symtabs_matching method. */ | |
4287 | struct search_symbols_data | |
4288 | { | |
4289 | int nfiles; | |
96142726 | 4290 | const char **files; |
681bf369 JK |
4291 | |
4292 | /* It is true if PREG contains valid data, false otherwise. */ | |
4293 | unsigned preg_p : 1; | |
4294 | regex_t preg; | |
ccefe4c4 TT |
4295 | }; |
4296 | ||
4297 | /* A callback for expand_symtabs_matching. */ | |
eca864fe | 4298 | |
ccefe4c4 | 4299 | static int |
fbd9ab74 JK |
4300 | search_symbols_file_matches (const char *filename, void *user_data, |
4301 | int basenames) | |
ccefe4c4 | 4302 | { |
19ba03f4 | 4303 | struct search_symbols_data *data = (struct search_symbols_data *) user_data; |
433759f7 | 4304 | |
fbd9ab74 | 4305 | return file_matches (filename, data->files, data->nfiles, basenames); |
ccefe4c4 TT |
4306 | } |
4307 | ||
4308 | /* A callback for expand_symtabs_matching. */ | |
eca864fe | 4309 | |
ccefe4c4 | 4310 | static int |
e078317b | 4311 | search_symbols_name_matches (const char *symname, void *user_data) |
ccefe4c4 | 4312 | { |
19ba03f4 | 4313 | struct search_symbols_data *data = (struct search_symbols_data *) user_data; |
433759f7 | 4314 | |
681bf369 | 4315 | return !data->preg_p || regexec (&data->preg, symname, 0, NULL, 0) == 0; |
ccefe4c4 TT |
4316 | } |
4317 | ||
c906108c SS |
4318 | /* Search the symbol table for matches to the regular expression REGEXP, |
4319 | returning the results in *MATCHES. | |
4320 | ||
4321 | Only symbols of KIND are searched: | |
e8930875 JK |
4322 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
4323 | and constants (enums) | |
176620f1 EZ |
4324 | FUNCTIONS_DOMAIN - search all functions |
4325 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4326 | ALL_DOMAIN - an internal error for this function |
c906108c SS |
4327 | |
4328 | free_search_symbols should be called when *MATCHES is no longer needed. | |
434d2d4f | 4329 | |
b52109bc DE |
4330 | Within each file the results are sorted locally; each symtab's global and |
4331 | static blocks are separately alphabetized. | |
4332 | Duplicate entries are removed. */ | |
c378eb4e | 4333 | |
c906108c | 4334 | void |
96142726 TT |
4335 | search_symbols (const char *regexp, enum search_domain kind, |
4336 | int nfiles, const char *files[], | |
fd118b61 | 4337 | struct symbol_search **matches) |
c906108c | 4338 | { |
43f3e411 | 4339 | struct compunit_symtab *cust; |
346d1dfe | 4340 | const struct blockvector *bv; |
52f0bd74 AC |
4341 | struct block *b; |
4342 | int i = 0; | |
8157b174 | 4343 | struct block_iterator iter; |
52f0bd74 | 4344 | struct symbol *sym; |
c906108c SS |
4345 | struct objfile *objfile; |
4346 | struct minimal_symbol *msymbol; | |
c906108c | 4347 | int found_misc = 0; |
bc043ef3 | 4348 | static const enum minimal_symbol_type types[] |
e8930875 | 4349 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 4350 | static const enum minimal_symbol_type types2[] |
e8930875 | 4351 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 4352 | static const enum minimal_symbol_type types3[] |
e8930875 | 4353 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 4354 | static const enum minimal_symbol_type types4[] |
e8930875 | 4355 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
4356 | enum minimal_symbol_type ourtype; |
4357 | enum minimal_symbol_type ourtype2; | |
4358 | enum minimal_symbol_type ourtype3; | |
4359 | enum minimal_symbol_type ourtype4; | |
b52109bc | 4360 | struct symbol_search *found; |
c906108c | 4361 | struct symbol_search *tail; |
ccefe4c4 | 4362 | struct search_symbols_data datum; |
b52109bc | 4363 | int nfound; |
c906108c | 4364 | |
681bf369 JK |
4365 | /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current |
4366 | CLEANUP_CHAIN is freed only in the case of an error. */ | |
4367 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
4368 | struct cleanup *retval_chain; | |
4369 | ||
e8930875 JK |
4370 | gdb_assert (kind <= TYPES_DOMAIN); |
4371 | ||
8903c50d TT |
4372 | ourtype = types[kind]; |
4373 | ourtype2 = types2[kind]; | |
4374 | ourtype3 = types3[kind]; | |
4375 | ourtype4 = types4[kind]; | |
c906108c | 4376 | |
b52109bc | 4377 | *matches = NULL; |
681bf369 | 4378 | datum.preg_p = 0; |
c906108c SS |
4379 | |
4380 | if (regexp != NULL) | |
4381 | { | |
4382 | /* Make sure spacing is right for C++ operators. | |
4383 | This is just a courtesy to make the matching less sensitive | |
4384 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4385 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4386 | const char *opend; |
4387 | const char *opname = operator_chars (regexp, &opend); | |
681bf369 | 4388 | int errcode; |
433759f7 | 4389 | |
c906108c | 4390 | if (*opname) |
c5aa993b | 4391 | { |
3e43a32a MS |
4392 | int fix = -1; /* -1 means ok; otherwise number of |
4393 | spaces needed. */ | |
433759f7 | 4394 | |
c5aa993b JM |
4395 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4396 | { | |
c378eb4e | 4397 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4398 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4399 | fix = 1; | |
4400 | } | |
4401 | else | |
4402 | { | |
c378eb4e | 4403 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4404 | if (opname[-1] == ' ') |
4405 | fix = 0; | |
4406 | } | |
c378eb4e | 4407 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4408 | if (fix >= 0) |
4409 | { | |
045f55a6 | 4410 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4411 | |
c5aa993b JM |
4412 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4413 | regexp = tmp; | |
4414 | } | |
4415 | } | |
4416 | ||
559a7a62 JK |
4417 | errcode = regcomp (&datum.preg, regexp, |
4418 | REG_NOSUB | (case_sensitivity == case_sensitive_off | |
4419 | ? REG_ICASE : 0)); | |
681bf369 JK |
4420 | if (errcode != 0) |
4421 | { | |
4422 | char *err = get_regcomp_error (errcode, &datum.preg); | |
4423 | ||
4424 | make_cleanup (xfree, err); | |
4425 | error (_("Invalid regexp (%s): %s"), err, regexp); | |
4426 | } | |
4427 | datum.preg_p = 1; | |
4428 | make_regfree_cleanup (&datum.preg); | |
c906108c SS |
4429 | } |
4430 | ||
4431 | /* Search through the partial symtabs *first* for all symbols | |
4432 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4433 | the machinery below. */ |
c906108c | 4434 | |
ccefe4c4 TT |
4435 | datum.nfiles = nfiles; |
4436 | datum.files = files; | |
bb4142cf DE |
4437 | expand_symtabs_matching ((nfiles == 0 |
4438 | ? NULL | |
4439 | : search_symbols_file_matches), | |
4440 | search_symbols_name_matches, | |
276d885b | 4441 | NULL, kind, &datum); |
c906108c SS |
4442 | |
4443 | /* Here, we search through the minimal symbol tables for functions | |
4444 | and variables that match, and force their symbols to be read. | |
4445 | This is in particular necessary for demangled variable names, | |
4446 | which are no longer put into the partial symbol tables. | |
4447 | The symbol will then be found during the scan of symtabs below. | |
4448 | ||
4449 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4450 | for the function, for variables we have to call |
4451 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4452 | has debug info. | |
c906108c | 4453 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4454 | any matching symbols without debug info. |
4455 | We only search the objfile the msymbol came from, we no longer search | |
4456 | all objfiles. In large programs (1000s of shared libs) searching all | |
4457 | objfiles is not worth the pain. */ | |
c906108c | 4458 | |
176620f1 | 4459 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
4460 | { |
4461 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 4462 | { |
89295b4d PP |
4463 | QUIT; |
4464 | ||
422d65e7 DE |
4465 | if (msymbol->created_by_gdb) |
4466 | continue; | |
4467 | ||
d50bd42b DE |
4468 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4469 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4470 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4471 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 4472 | { |
681bf369 | 4473 | if (!datum.preg_p |
efd66ac6 | 4474 | || regexec (&datum.preg, MSYMBOL_NATURAL_NAME (msymbol), 0, |
681bf369 | 4475 | NULL, 0) == 0) |
c5aa993b | 4476 | { |
422d65e7 DE |
4477 | /* Note: An important side-effect of these lookup functions |
4478 | is to expand the symbol table if msymbol is found, for the | |
43f3e411 | 4479 | benefit of the next loop on ALL_COMPUNITS. */ |
422d65e7 | 4480 | if (kind == FUNCTIONS_DOMAIN |
43f3e411 DE |
4481 | ? (find_pc_compunit_symtab |
4482 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL) | |
422d65e7 | 4483 | : (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 4484 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
d12307c1 | 4485 | .symbol == NULL)) |
422d65e7 | 4486 | found_misc = 1; |
c5aa993b JM |
4487 | } |
4488 | } | |
4489 | } | |
c906108c SS |
4490 | } |
4491 | ||
b52109bc DE |
4492 | found = NULL; |
4493 | tail = NULL; | |
4494 | nfound = 0; | |
4495 | retval_chain = make_cleanup_free_search_symbols (&found); | |
4496 | ||
43f3e411 | 4497 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 4498 | { |
43f3e411 | 4499 | bv = COMPUNIT_BLOCKVECTOR (cust); |
d50bd42b DE |
4500 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
4501 | { | |
d50bd42b DE |
4502 | b = BLOCKVECTOR_BLOCK (bv, i); |
4503 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4504 | { | |
08be3fe3 | 4505 | struct symtab *real_symtab = symbol_symtab (sym); |
d50bd42b DE |
4506 | |
4507 | QUIT; | |
4508 | ||
fbd9ab74 JK |
4509 | /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be |
4510 | a substring of symtab_to_fullname as it may contain "./" etc. */ | |
4511 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4512 | || ((basenames_may_differ | |
4513 | || file_matches (lbasename (real_symtab->filename), | |
4514 | files, nfiles, 1)) | |
4515 | && file_matches (symtab_to_fullname (real_symtab), | |
4516 | files, nfiles, 0))) | |
d50bd42b DE |
4517 | && ((!datum.preg_p |
4518 | || regexec (&datum.preg, SYMBOL_NATURAL_NAME (sym), 0, | |
4519 | NULL, 0) == 0) | |
4520 | && ((kind == VARIABLES_DOMAIN | |
4521 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4522 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4523 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4524 | /* LOC_CONST can be used for more than just enums, | |
4525 | e.g., c++ static const members. | |
4526 | We only want to skip enums here. */ | |
4527 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
01465b56 DE |
4528 | && (TYPE_CODE (SYMBOL_TYPE (sym)) |
4529 | == TYPE_CODE_ENUM))) | |
d50bd42b DE |
4530 | || (kind == FUNCTIONS_DOMAIN |
4531 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
4532 | || (kind == TYPES_DOMAIN | |
4533 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4534 | { | |
4535 | /* match */ | |
8d749320 SM |
4536 | struct symbol_search *psr = XCNEW (struct symbol_search); |
4537 | ||
d50bd42b | 4538 | psr->block = i; |
d50bd42b | 4539 | psr->symbol = sym; |
d50bd42b DE |
4540 | psr->next = NULL; |
4541 | if (tail == NULL) | |
b52109bc | 4542 | found = psr; |
d50bd42b DE |
4543 | else |
4544 | tail->next = psr; | |
4545 | tail = psr; | |
4546 | nfound ++; | |
4547 | } | |
4548 | } | |
d50bd42b | 4549 | } |
c5aa993b | 4550 | } |
c906108c | 4551 | |
b52109bc DE |
4552 | if (found != NULL) |
4553 | { | |
4554 | sort_search_symbols_remove_dups (found, nfound, &found, &tail); | |
4555 | /* Note: nfound is no longer useful beyond this point. */ | |
4556 | } | |
4557 | ||
c906108c | 4558 | /* If there are no eyes, avoid all contact. I mean, if there are |
01465b56 | 4559 | no debug symbols, then add matching minsyms. */ |
c906108c | 4560 | |
422d65e7 | 4561 | if (found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
c906108c SS |
4562 | { |
4563 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 4564 | { |
89295b4d PP |
4565 | QUIT; |
4566 | ||
422d65e7 DE |
4567 | if (msymbol->created_by_gdb) |
4568 | continue; | |
4569 | ||
d50bd42b DE |
4570 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4571 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4572 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4573 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 4574 | { |
681bf369 | 4575 | if (!datum.preg_p |
efd66ac6 | 4576 | || regexec (&datum.preg, MSYMBOL_NATURAL_NAME (msymbol), 0, |
681bf369 | 4577 | NULL, 0) == 0) |
c5aa993b | 4578 | { |
422d65e7 DE |
4579 | /* For functions we can do a quick check of whether the |
4580 | symbol might be found via find_pc_symtab. */ | |
4581 | if (kind != FUNCTIONS_DOMAIN | |
43f3e411 DE |
4582 | || (find_pc_compunit_symtab |
4583 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL)) | |
c5aa993b | 4584 | { |
422d65e7 | 4585 | if (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 4586 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
d12307c1 | 4587 | .symbol == NULL) |
c5aa993b JM |
4588 | { |
4589 | /* match */ | |
8d749320 | 4590 | struct symbol_search *psr = XNEW (struct symbol_search); |
c5aa993b | 4591 | psr->block = i; |
7c7b6655 TT |
4592 | psr->msymbol.minsym = msymbol; |
4593 | psr->msymbol.objfile = objfile; | |
c5aa993b JM |
4594 | psr->symbol = NULL; |
4595 | psr->next = NULL; | |
4596 | if (tail == NULL) | |
b52109bc | 4597 | found = psr; |
c5aa993b JM |
4598 | else |
4599 | tail->next = psr; | |
4600 | tail = psr; | |
4601 | } | |
4602 | } | |
4603 | } | |
4604 | } | |
4605 | } | |
c906108c SS |
4606 | } |
4607 | ||
681bf369 JK |
4608 | discard_cleanups (retval_chain); |
4609 | do_cleanups (old_chain); | |
b52109bc | 4610 | *matches = found; |
c906108c SS |
4611 | } |
4612 | ||
4613 | /* Helper function for symtab_symbol_info, this function uses | |
4614 | the data returned from search_symbols() to print information | |
c378eb4e MS |
4615 | regarding the match to gdb_stdout. */ |
4616 | ||
c906108c | 4617 | static void |
8903c50d | 4618 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4619 | struct symbol *sym, |
05cba821 | 4620 | int block, const char *last) |
c906108c | 4621 | { |
08be3fe3 | 4622 | struct symtab *s = symbol_symtab (sym); |
05cba821 JK |
4623 | const char *s_filename = symtab_to_filename_for_display (s); |
4624 | ||
4625 | if (last == NULL || filename_cmp (last, s_filename) != 0) | |
c906108c SS |
4626 | { |
4627 | fputs_filtered ("\nFile ", gdb_stdout); | |
05cba821 | 4628 | fputs_filtered (s_filename, gdb_stdout); |
c906108c SS |
4629 | fputs_filtered (":\n", gdb_stdout); |
4630 | } | |
4631 | ||
176620f1 | 4632 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4633 | printf_filtered ("static "); |
c5aa993b | 4634 | |
c378eb4e | 4635 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4636 | if (kind == TYPES_DOMAIN |
4637 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 4638 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4639 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4640 | else if (kind < TYPES_DOMAIN |
4641 | || (kind == TYPES_DOMAIN | |
4642 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4643 | { |
4644 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4645 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4646 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4647 | gdb_stdout, 0); |
c906108c SS |
4648 | |
4649 | printf_filtered (";\n"); | |
4650 | } | |
c906108c SS |
4651 | } |
4652 | ||
4653 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4654 | for non-debugging symbols to gdb_stdout. */ |
4655 | ||
c906108c | 4656 | static void |
7c7b6655 | 4657 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4658 | { |
7c7b6655 | 4659 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4660 | char *tmp; |
4661 | ||
d80b854b | 4662 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4663 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4664 | & (CORE_ADDR) 0xffffffff, |
4665 | 8); | |
3ac4495a | 4666 | else |
77e371c0 | 4667 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4668 | 16); |
3ac4495a | 4669 | printf_filtered ("%s %s\n", |
efd66ac6 | 4670 | tmp, MSYMBOL_PRINT_NAME (msymbol.minsym)); |
c906108c SS |
4671 | } |
4672 | ||
4673 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4674 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4675 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4676 | matches. */ |
4677 | ||
c906108c | 4678 | static void |
8903c50d | 4679 | symtab_symbol_info (char *regexp, enum search_domain kind, int from_tty) |
c906108c | 4680 | { |
bc043ef3 | 4681 | static const char * const classnames[] = |
e8930875 | 4682 | {"variable", "function", "type"}; |
c906108c SS |
4683 | struct symbol_search *symbols; |
4684 | struct symbol_search *p; | |
4685 | struct cleanup *old_chain; | |
05cba821 | 4686 | const char *last_filename = NULL; |
c906108c SS |
4687 | int first = 1; |
4688 | ||
e8930875 JK |
4689 | gdb_assert (kind <= TYPES_DOMAIN); |
4690 | ||
c378eb4e | 4691 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
96142726 | 4692 | search_symbols (regexp, kind, 0, NULL, &symbols); |
b52109bc | 4693 | old_chain = make_cleanup_free_search_symbols (&symbols); |
c906108c | 4694 | |
ca242aad YQ |
4695 | if (regexp != NULL) |
4696 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4697 | classnames[kind], regexp); | |
4698 | else | |
4699 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
c906108c SS |
4700 | |
4701 | for (p = symbols; p != NULL; p = p->next) | |
4702 | { | |
4703 | QUIT; | |
4704 | ||
7c7b6655 | 4705 | if (p->msymbol.minsym != NULL) |
c5aa993b JM |
4706 | { |
4707 | if (first) | |
4708 | { | |
ca242aad | 4709 | printf_filtered (_("\nNon-debugging symbols:\n")); |
c5aa993b JM |
4710 | first = 0; |
4711 | } | |
4712 | print_msymbol_info (p->msymbol); | |
4713 | } | |
c906108c | 4714 | else |
c5aa993b JM |
4715 | { |
4716 | print_symbol_info (kind, | |
c5aa993b JM |
4717 | p->symbol, |
4718 | p->block, | |
4719 | last_filename); | |
d01060f0 | 4720 | last_filename |
08be3fe3 | 4721 | = symtab_to_filename_for_display (symbol_symtab (p->symbol)); |
c5aa993b | 4722 | } |
c906108c SS |
4723 | } |
4724 | ||
4725 | do_cleanups (old_chain); | |
4726 | } | |
4727 | ||
4728 | static void | |
fba45db2 | 4729 | variables_info (char *regexp, int from_tty) |
c906108c | 4730 | { |
176620f1 | 4731 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
4732 | } |
4733 | ||
4734 | static void | |
fba45db2 | 4735 | functions_info (char *regexp, int from_tty) |
c906108c | 4736 | { |
176620f1 | 4737 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
4738 | } |
4739 | ||
357e46e7 | 4740 | |
c906108c | 4741 | static void |
fba45db2 | 4742 | types_info (char *regexp, int from_tty) |
c906108c | 4743 | { |
176620f1 | 4744 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
4745 | } |
4746 | ||
c378eb4e | 4747 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4748 | |
8b93c638 | 4749 | void |
fba45db2 | 4750 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4751 | { |
4752 | rbreak_command (regexp, from_tty); | |
4753 | } | |
8926118c | 4754 | |
95a42b64 TT |
4755 | /* A cleanup function that calls end_rbreak_breakpoints. */ |
4756 | ||
4757 | static void | |
4758 | do_end_rbreak_breakpoints (void *ignore) | |
4759 | { | |
4760 | end_rbreak_breakpoints (); | |
4761 | } | |
4762 | ||
c906108c | 4763 | static void |
fba45db2 | 4764 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
4765 | { |
4766 | struct symbol_search *ss; | |
4767 | struct symbol_search *p; | |
4768 | struct cleanup *old_chain; | |
95a42b64 TT |
4769 | char *string = NULL; |
4770 | int len = 0; | |
96142726 TT |
4771 | const char **files = NULL; |
4772 | const char *file_name; | |
8bd10a10 | 4773 | int nfiles = 0; |
c906108c | 4774 | |
8bd10a10 CM |
4775 | if (regexp) |
4776 | { | |
4777 | char *colon = strchr (regexp, ':'); | |
433759f7 | 4778 | |
8bd10a10 CM |
4779 | if (colon && *(colon + 1) != ':') |
4780 | { | |
4781 | int colon_index; | |
96142726 | 4782 | char *local_name; |
8bd10a10 CM |
4783 | |
4784 | colon_index = colon - regexp; | |
224c3ddb | 4785 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
4786 | memcpy (local_name, regexp, colon_index); |
4787 | local_name[colon_index--] = 0; | |
4788 | while (isspace (local_name[colon_index])) | |
4789 | local_name[colon_index--] = 0; | |
4790 | file_name = local_name; | |
8bd10a10 CM |
4791 | files = &file_name; |
4792 | nfiles = 1; | |
529480d0 | 4793 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4794 | } |
4795 | } | |
4796 | ||
4797 | search_symbols (regexp, FUNCTIONS_DOMAIN, nfiles, files, &ss); | |
b52109bc | 4798 | old_chain = make_cleanup_free_search_symbols (&ss); |
95a42b64 | 4799 | make_cleanup (free_current_contents, &string); |
c906108c | 4800 | |
95a42b64 TT |
4801 | start_rbreak_breakpoints (); |
4802 | make_cleanup (do_end_rbreak_breakpoints, NULL); | |
c906108c SS |
4803 | for (p = ss; p != NULL; p = p->next) |
4804 | { | |
7c7b6655 | 4805 | if (p->msymbol.minsym == NULL) |
c5aa993b | 4806 | { |
08be3fe3 | 4807 | struct symtab *symtab = symbol_symtab (p->symbol); |
d01060f0 | 4808 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 JK |
4809 | |
4810 | int newlen = (strlen (fullname) | |
95a42b64 TT |
4811 | + strlen (SYMBOL_LINKAGE_NAME (p->symbol)) |
4812 | + 4); | |
433759f7 | 4813 | |
95a42b64 TT |
4814 | if (newlen > len) |
4815 | { | |
224c3ddb | 4816 | string = (char *) xrealloc (string, newlen); |
95a42b64 TT |
4817 | len = newlen; |
4818 | } | |
05cba821 | 4819 | strcpy (string, fullname); |
c5aa993b | 4820 | strcat (string, ":'"); |
2335f48e | 4821 | strcat (string, SYMBOL_LINKAGE_NAME (p->symbol)); |
c5aa993b JM |
4822 | strcat (string, "'"); |
4823 | break_command (string, from_tty); | |
176620f1 | 4824 | print_symbol_info (FUNCTIONS_DOMAIN, |
c5aa993b JM |
4825 | p->symbol, |
4826 | p->block, | |
d01060f0 | 4827 | symtab_to_filename_for_display (symtab)); |
c5aa993b | 4828 | } |
c906108c | 4829 | else |
c5aa993b | 4830 | { |
efd66ac6 | 4831 | int newlen = (strlen (MSYMBOL_LINKAGE_NAME (p->msymbol.minsym)) + 3); |
433759f7 | 4832 | |
95a42b64 TT |
4833 | if (newlen > len) |
4834 | { | |
224c3ddb | 4835 | string = (char *) xrealloc (string, newlen); |
95a42b64 TT |
4836 | len = newlen; |
4837 | } | |
6214f497 | 4838 | strcpy (string, "'"); |
efd66ac6 | 4839 | strcat (string, MSYMBOL_LINKAGE_NAME (p->msymbol.minsym)); |
6214f497 DJ |
4840 | strcat (string, "'"); |
4841 | ||
4842 | break_command (string, from_tty); | |
c5aa993b | 4843 | printf_filtered ("<function, no debug info> %s;\n", |
efd66ac6 | 4844 | MSYMBOL_PRINT_NAME (p->msymbol.minsym)); |
c5aa993b | 4845 | } |
c906108c SS |
4846 | } |
4847 | ||
4848 | do_cleanups (old_chain); | |
4849 | } | |
c906108c | 4850 | \f |
c5aa993b | 4851 | |
1976171a JK |
4852 | /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN. |
4853 | ||
4854 | Either sym_text[sym_text_len] != '(' and then we search for any | |
4855 | symbol starting with SYM_TEXT text. | |
4856 | ||
4857 | Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to | |
4858 | be terminated at that point. Partial symbol tables do not have parameters | |
4859 | information. */ | |
4860 | ||
4861 | static int | |
4862 | compare_symbol_name (const char *name, const char *sym_text, int sym_text_len) | |
4863 | { | |
4864 | int (*ncmp) (const char *, const char *, size_t); | |
4865 | ||
4866 | ncmp = (case_sensitivity == case_sensitive_on ? strncmp : strncasecmp); | |
4867 | ||
4868 | if (ncmp (name, sym_text, sym_text_len) != 0) | |
4869 | return 0; | |
4870 | ||
4871 | if (sym_text[sym_text_len] == '(') | |
4872 | { | |
4873 | /* User searches for `name(someth...'. Require NAME to be terminated. | |
4874 | Normally psymtabs and gdbindex have no parameter types so '\0' will be | |
4875 | present but accept even parameters presence. In this case this | |
4876 | function is in fact strcmp_iw but whitespace skipping is not supported | |
4877 | for tab completion. */ | |
4878 | ||
4879 | if (name[sym_text_len] != '\0' && name[sym_text_len] != '(') | |
4880 | return 0; | |
4881 | } | |
4882 | ||
4883 | return 1; | |
4884 | } | |
4885 | ||
821296b7 SA |
4886 | /* Free any memory associated with a completion list. */ |
4887 | ||
4888 | static void | |
49c4e619 | 4889 | free_completion_list (VEC (char_ptr) **list_ptr) |
821296b7 | 4890 | { |
49c4e619 TT |
4891 | int i; |
4892 | char *p; | |
821296b7 | 4893 | |
49c4e619 TT |
4894 | for (i = 0; VEC_iterate (char_ptr, *list_ptr, i, p); ++i) |
4895 | xfree (p); | |
4896 | VEC_free (char_ptr, *list_ptr); | |
821296b7 SA |
4897 | } |
4898 | ||
4899 | /* Callback for make_cleanup. */ | |
4900 | ||
4901 | static void | |
4902 | do_free_completion_list (void *list) | |
4903 | { | |
19ba03f4 | 4904 | free_completion_list ((VEC (char_ptr) **) list); |
821296b7 SA |
4905 | } |
4906 | ||
c906108c SS |
4907 | /* Helper routine for make_symbol_completion_list. */ |
4908 | ||
49c4e619 | 4909 | static VEC (char_ptr) *return_val; |
c906108c SS |
4910 | |
4911 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
c906108c | 4912 | completion_list_add_name \ |
2335f48e | 4913 | (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) |
c906108c | 4914 | |
efd66ac6 TT |
4915 | #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ |
4916 | completion_list_add_name \ | |
4917 | (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) | |
4918 | ||
ef0b411a GB |
4919 | /* Tracker for how many unique completions have been generated. Used |
4920 | to terminate completion list generation early if the list has grown | |
4921 | to a size so large as to be useless. This helps avoid GDB seeming | |
4922 | to lock up in the event the user requests to complete on something | |
4923 | vague that necessitates the time consuming expansion of many symbol | |
4924 | tables. */ | |
4925 | ||
4926 | static completion_tracker_t completion_tracker; | |
4927 | ||
c906108c | 4928 | /* Test to see if the symbol specified by SYMNAME (which is already |
c5aa993b | 4929 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
c378eb4e | 4930 | characters. If so, add it to the current completion list. */ |
c906108c SS |
4931 | |
4932 | static void | |
0d5cff50 DE |
4933 | completion_list_add_name (const char *symname, |
4934 | const char *sym_text, int sym_text_len, | |
4935 | const char *text, const char *word) | |
c906108c | 4936 | { |
c378eb4e | 4937 | /* Clip symbols that cannot match. */ |
1976171a JK |
4938 | if (!compare_symbol_name (symname, sym_text, sym_text_len)) |
4939 | return; | |
c906108c | 4940 | |
c906108c | 4941 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4942 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4943 | |
4944 | { | |
fe978cb0 | 4945 | char *newobj; |
ef0b411a | 4946 | enum maybe_add_completion_enum add_status; |
433759f7 | 4947 | |
c906108c SS |
4948 | if (word == sym_text) |
4949 | { | |
224c3ddb | 4950 | newobj = (char *) xmalloc (strlen (symname) + 5); |
fe978cb0 | 4951 | strcpy (newobj, symname); |
c906108c SS |
4952 | } |
4953 | else if (word > sym_text) | |
4954 | { | |
4955 | /* Return some portion of symname. */ | |
224c3ddb | 4956 | newobj = (char *) xmalloc (strlen (symname) + 5); |
fe978cb0 | 4957 | strcpy (newobj, symname + (word - sym_text)); |
c906108c SS |
4958 | } |
4959 | else | |
4960 | { | |
4961 | /* Return some of SYM_TEXT plus symname. */ | |
224c3ddb | 4962 | newobj = (char *) xmalloc (strlen (symname) + (sym_text - word) + 5); |
fe978cb0 PA |
4963 | strncpy (newobj, word, sym_text - word); |
4964 | newobj[sym_text - word] = '\0'; | |
4965 | strcat (newobj, symname); | |
c906108c SS |
4966 | } |
4967 | ||
fe978cb0 | 4968 | add_status = maybe_add_completion (completion_tracker, newobj); |
ef0b411a GB |
4969 | |
4970 | switch (add_status) | |
4971 | { | |
4972 | case MAYBE_ADD_COMPLETION_OK: | |
fe978cb0 | 4973 | VEC_safe_push (char_ptr, return_val, newobj); |
ef0b411a GB |
4974 | break; |
4975 | case MAYBE_ADD_COMPLETION_OK_MAX_REACHED: | |
fe978cb0 | 4976 | VEC_safe_push (char_ptr, return_val, newobj); |
ef0b411a GB |
4977 | throw_max_completions_reached_error (); |
4978 | case MAYBE_ADD_COMPLETION_MAX_REACHED: | |
fe978cb0 | 4979 | xfree (newobj); |
ef0b411a GB |
4980 | throw_max_completions_reached_error (); |
4981 | case MAYBE_ADD_COMPLETION_DUPLICATE: | |
fe978cb0 | 4982 | xfree (newobj); |
ef0b411a GB |
4983 | break; |
4984 | } | |
c906108c SS |
4985 | } |
4986 | } | |
4987 | ||
69636828 AF |
4988 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4989 | again and feed all the selectors into the mill. */ | |
4990 | ||
4991 | static void | |
0d5cff50 DE |
4992 | completion_list_objc_symbol (struct minimal_symbol *msymbol, |
4993 | const char *sym_text, int sym_text_len, | |
4994 | const char *text, const char *word) | |
69636828 AF |
4995 | { |
4996 | static char *tmp = NULL; | |
4997 | static unsigned int tmplen = 0; | |
9af17804 | 4998 | |
0d5cff50 | 4999 | const char *method, *category, *selector; |
69636828 | 5000 | char *tmp2 = NULL; |
9af17804 | 5001 | |
efd66ac6 | 5002 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
5003 | |
5004 | /* Is it a method? */ | |
5005 | if ((method[0] != '-') && (method[0] != '+')) | |
5006 | return; | |
5007 | ||
5008 | if (sym_text[0] == '[') | |
5009 | /* Complete on shortened method method. */ | |
5010 | completion_list_add_name (method + 1, sym_text, sym_text_len, text, word); | |
9af17804 | 5011 | |
69636828 AF |
5012 | while ((strlen (method) + 1) >= tmplen) |
5013 | { | |
5014 | if (tmplen == 0) | |
5015 | tmplen = 1024; | |
5016 | else | |
5017 | tmplen *= 2; | |
224c3ddb | 5018 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
5019 | } |
5020 | selector = strchr (method, ' '); | |
5021 | if (selector != NULL) | |
5022 | selector++; | |
9af17804 | 5023 | |
69636828 | 5024 | category = strchr (method, '('); |
9af17804 | 5025 | |
69636828 AF |
5026 | if ((category != NULL) && (selector != NULL)) |
5027 | { | |
5028 | memcpy (tmp, method, (category - method)); | |
5029 | tmp[category - method] = ' '; | |
5030 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
5031 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
5032 | if (sym_text[0] == '[') | |
5033 | completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word); | |
5034 | } | |
9af17804 | 5035 | |
69636828 AF |
5036 | if (selector != NULL) |
5037 | { | |
5038 | /* Complete on selector only. */ | |
5039 | strcpy (tmp, selector); | |
5040 | tmp2 = strchr (tmp, ']'); | |
5041 | if (tmp2 != NULL) | |
5042 | *tmp2 = '\0'; | |
9af17804 | 5043 | |
69636828 AF |
5044 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); |
5045 | } | |
5046 | } | |
5047 | ||
5048 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 5049 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 5050 | |
6f937416 PA |
5051 | static const char * |
5052 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
5053 | { |
5054 | for (; p > text; --p) | |
5055 | { | |
5056 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
5057 | continue; | |
5058 | else | |
5059 | { | |
5060 | if ((current_language->la_language == language_objc)) | |
5061 | { | |
c378eb4e | 5062 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
5063 | continue; |
5064 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 5065 | p -= 2; /* Beginning of a method name. */ |
69636828 | 5066 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 5067 | { /* Might be part of a method name. */ |
6f937416 | 5068 | const char *t = p; |
69636828 AF |
5069 | |
5070 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
5071 | that we are in the middle of a method name. However, | |
5072 | finding "-[" or "+[" should be pretty un-ambiguous. | |
5073 | Unfortunately we have to find it now to decide. */ | |
5074 | ||
5075 | while (t > text) | |
5076 | if (isalnum (t[-1]) || t[-1] == '_' || | |
5077 | t[-1] == ' ' || t[-1] == ':' || | |
5078 | t[-1] == '(' || t[-1] == ')') | |
5079 | --t; | |
5080 | else | |
5081 | break; | |
5082 | ||
5083 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
5084 | p = t - 2; /* Method name detected. */ |
5085 | /* Else we leave with p unchanged. */ | |
69636828 AF |
5086 | } |
5087 | } | |
5088 | break; | |
5089 | } | |
5090 | } | |
5091 | return p; | |
5092 | } | |
5093 | ||
edb3359d | 5094 | static void |
6f937416 PA |
5095 | completion_list_add_fields (struct symbol *sym, const char *sym_text, |
5096 | int sym_text_len, const char *text, | |
5097 | const char *word) | |
edb3359d DJ |
5098 | { |
5099 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5100 | { | |
5101 | struct type *t = SYMBOL_TYPE (sym); | |
5102 | enum type_code c = TYPE_CODE (t); | |
5103 | int j; | |
5104 | ||
5105 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
5106 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
5107 | if (TYPE_FIELD_NAME (t, j)) | |
5108 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
5109 | sym_text, sym_text_len, text, word); | |
5110 | } | |
5111 | } | |
5112 | ||
e11c72c7 GB |
5113 | /* Type of the user_data argument passed to add_macro_name, |
5114 | symbol_completion_matcher and symtab_expansion_callback. */ | |
5115 | ||
ccefe4c4 | 5116 | struct add_name_data |
9a044a89 | 5117 | { |
e11c72c7 | 5118 | /* Arguments required by completion_list_add_name. */ |
6f937416 | 5119 | const char *sym_text; |
9a044a89 | 5120 | int sym_text_len; |
6f937416 PA |
5121 | const char *text; |
5122 | const char *word; | |
e11c72c7 GB |
5123 | |
5124 | /* Extra argument required for add_symtab_completions. */ | |
5125 | enum type_code code; | |
9a044a89 TT |
5126 | }; |
5127 | ||
5128 | /* A callback used with macro_for_each and macro_for_each_in_scope. | |
5129 | This adds a macro's name to the current completion list. */ | |
eca864fe | 5130 | |
9a044a89 TT |
5131 | static void |
5132 | add_macro_name (const char *name, const struct macro_definition *ignore, | |
9b158ba0 | 5133 | struct macro_source_file *ignore2, int ignore3, |
9a044a89 TT |
5134 | void *user_data) |
5135 | { | |
ccefe4c4 | 5136 | struct add_name_data *datum = (struct add_name_data *) user_data; |
433759f7 | 5137 | |
ac1a991b | 5138 | completion_list_add_name (name, |
ccefe4c4 TT |
5139 | datum->sym_text, datum->sym_text_len, |
5140 | datum->text, datum->word); | |
5141 | } | |
5142 | ||
bb4142cf | 5143 | /* A callback for expand_symtabs_matching. */ |
eca864fe | 5144 | |
7b08b9eb | 5145 | static int |
bb4142cf | 5146 | symbol_completion_matcher (const char *name, void *user_data) |
ccefe4c4 TT |
5147 | { |
5148 | struct add_name_data *datum = (struct add_name_data *) user_data; | |
165195f4 | 5149 | |
1976171a | 5150 | return compare_symbol_name (name, datum->sym_text, datum->sym_text_len); |
9a044a89 TT |
5151 | } |
5152 | ||
e11c72c7 GB |
5153 | /* Add matching symbols from SYMTAB to the current completion list. */ |
5154 | ||
5155 | static void | |
5156 | add_symtab_completions (struct compunit_symtab *cust, | |
5157 | const char *sym_text, int sym_text_len, | |
5158 | const char *text, const char *word, | |
5159 | enum type_code code) | |
5160 | { | |
5161 | struct symbol *sym; | |
5162 | const struct block *b; | |
5163 | struct block_iterator iter; | |
5164 | int i; | |
5165 | ||
ff6fa247 GB |
5166 | if (cust == NULL) |
5167 | return; | |
5168 | ||
e11c72c7 GB |
5169 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
5170 | { | |
5171 | QUIT; | |
5172 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
5173 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5174 | { | |
5175 | if (code == TYPE_CODE_UNDEF | |
5176 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5177 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
5178 | COMPLETION_LIST_ADD_SYMBOL (sym, | |
5179 | sym_text, sym_text_len, | |
5180 | text, word); | |
5181 | } | |
5182 | } | |
5183 | } | |
5184 | ||
5185 | /* Callback to add completions to the current list when symbol tables | |
5186 | are expanded during completion list generation. */ | |
5187 | ||
5188 | static void | |
5189 | symtab_expansion_callback (struct compunit_symtab *symtab, | |
5190 | void *user_data) | |
5191 | { | |
5192 | struct add_name_data *datum = (struct add_name_data *) user_data; | |
5193 | ||
5194 | add_symtab_completions (symtab, | |
5195 | datum->sym_text, datum->sym_text_len, | |
5196 | datum->text, datum->word, | |
5197 | datum->code); | |
5198 | } | |
5199 | ||
ef0b411a GB |
5200 | static void |
5201 | default_make_symbol_completion_list_break_on_1 (const char *text, | |
5202 | const char *word, | |
5203 | const char *break_on, | |
5204 | enum type_code code) | |
c906108c | 5205 | { |
41d27058 JB |
5206 | /* Problem: All of the symbols have to be copied because readline |
5207 | frees them. I'm not going to worry about this; hopefully there | |
5208 | won't be that many. */ | |
5209 | ||
de4f826b | 5210 | struct symbol *sym; |
43f3e411 | 5211 | struct compunit_symtab *cust; |
de4f826b DC |
5212 | struct minimal_symbol *msymbol; |
5213 | struct objfile *objfile; | |
3977b71f | 5214 | const struct block *b; |
edb3359d | 5215 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 5216 | struct block_iterator iter; |
c906108c | 5217 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5218 | const char *sym_text; |
c906108c SS |
5219 | /* Length of sym_text. */ |
5220 | int sym_text_len; | |
ccefe4c4 | 5221 | struct add_name_data datum; |
ef0b411a | 5222 | struct cleanup *cleanups; |
c906108c | 5223 | |
41d27058 | 5224 | /* Now look for the symbol we are supposed to complete on. */ |
c906108c | 5225 | { |
6f937416 | 5226 | const char *p; |
c906108c | 5227 | char quote_found; |
6f937416 | 5228 | const char *quote_pos = NULL; |
c906108c SS |
5229 | |
5230 | /* First see if this is a quoted string. */ | |
5231 | quote_found = '\0'; | |
5232 | for (p = text; *p != '\0'; ++p) | |
5233 | { | |
5234 | if (quote_found != '\0') | |
5235 | { | |
5236 | if (*p == quote_found) | |
5237 | /* Found close quote. */ | |
5238 | quote_found = '\0'; | |
5239 | else if (*p == '\\' && p[1] == quote_found) | |
5240 | /* A backslash followed by the quote character | |
c5aa993b | 5241 | doesn't end the string. */ |
c906108c SS |
5242 | ++p; |
5243 | } | |
5244 | else if (*p == '\'' || *p == '"') | |
5245 | { | |
5246 | quote_found = *p; | |
5247 | quote_pos = p; | |
5248 | } | |
5249 | } | |
5250 | if (quote_found == '\'') | |
5251 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5252 | sym_text = quote_pos + 1; | |
5253 | else if (quote_found == '"') | |
5254 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 5255 | to complete it any other way. */ |
c94fdfd0 | 5256 | { |
ef0b411a | 5257 | return; |
c94fdfd0 | 5258 | } |
c906108c SS |
5259 | else |
5260 | { | |
5261 | /* It is not a quoted string. Break it based on the characters | |
5262 | which are in symbols. */ | |
5263 | while (p > text) | |
5264 | { | |
95699ff0 | 5265 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 5266 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
5267 | --p; |
5268 | else | |
5269 | break; | |
5270 | } | |
5271 | sym_text = p; | |
5272 | } | |
5273 | } | |
5274 | ||
5275 | sym_text_len = strlen (sym_text); | |
5276 | ||
1976171a JK |
5277 | /* Prepare SYM_TEXT_LEN for compare_symbol_name. */ |
5278 | ||
5279 | if (current_language->la_language == language_cplus | |
1976171a JK |
5280 | || current_language->la_language == language_fortran) |
5281 | { | |
5282 | /* These languages may have parameters entered by user but they are never | |
5283 | present in the partial symbol tables. */ | |
5284 | ||
585a269a | 5285 | const char *cs = (const char *) memchr (sym_text, '(', sym_text_len); |
1976171a JK |
5286 | |
5287 | if (cs) | |
5288 | sym_text_len = cs - sym_text; | |
5289 | } | |
5290 | gdb_assert (sym_text[sym_text_len] == '\0' || sym_text[sym_text_len] == '('); | |
5291 | ||
ef0b411a GB |
5292 | completion_tracker = new_completion_tracker (); |
5293 | cleanups = make_cleanup_free_completion_tracker (&completion_tracker); | |
c906108c | 5294 | |
ccefe4c4 TT |
5295 | datum.sym_text = sym_text; |
5296 | datum.sym_text_len = sym_text_len; | |
5297 | datum.text = text; | |
5298 | datum.word = word; | |
e11c72c7 | 5299 | datum.code = code; |
c906108c SS |
5300 | |
5301 | /* At this point scan through the misc symbol vectors and add each | |
5302 | symbol you find to the list. Eventually we want to ignore | |
5303 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 5304 | handled by the psymtab code below). */ |
c906108c | 5305 | |
2f68a895 TT |
5306 | if (code == TYPE_CODE_UNDEF) |
5307 | { | |
5308 | ALL_MSYMBOLS (objfile, msymbol) | |
5309 | { | |
5310 | QUIT; | |
efd66ac6 TT |
5311 | MCOMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, |
5312 | word); | |
9af17804 | 5313 | |
2f68a895 TT |
5314 | completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, |
5315 | word); | |
5316 | } | |
5317 | } | |
c906108c | 5318 | |
e11c72c7 GB |
5319 | /* Add completions for all currently loaded symbol tables. */ |
5320 | ALL_COMPUNITS (objfile, cust) | |
5321 | add_symtab_completions (cust, sym_text, sym_text_len, text, word, | |
5322 | code); | |
5323 | ||
5324 | /* Look through the partial symtabs for all symbols which begin | |
5325 | by matching SYM_TEXT. Expand all CUs that you find to the list. | |
5326 | symtab_expansion_callback is called for each expanded symtab, | |
5327 | causing those symtab's completions to be added to the list too. */ | |
5328 | expand_symtabs_matching (NULL, symbol_completion_matcher, | |
5329 | symtab_expansion_callback, ALL_DOMAIN, | |
5330 | &datum); | |
5331 | ||
c906108c | 5332 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5333 | complete on local vars). Also catch fields of types defined in |
5334 | this places which match our text string. Only complete on types | |
c378eb4e | 5335 | visible from current context. */ |
edb3359d DJ |
5336 | |
5337 | b = get_selected_block (0); | |
5338 | surrounding_static_block = block_static_block (b); | |
5339 | surrounding_global_block = block_global_block (b); | |
5340 | if (surrounding_static_block != NULL) | |
5341 | while (b != surrounding_static_block) | |
5342 | { | |
5343 | QUIT; | |
c906108c | 5344 | |
edb3359d DJ |
5345 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5346 | { | |
2f68a895 TT |
5347 | if (code == TYPE_CODE_UNDEF) |
5348 | { | |
5349 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
5350 | word); | |
5351 | completion_list_add_fields (sym, sym_text, sym_text_len, text, | |
5352 | word); | |
5353 | } | |
5354 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5355 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
5356 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
5357 | word); | |
edb3359d | 5358 | } |
c5aa993b | 5359 | |
edb3359d DJ |
5360 | /* Stop when we encounter an enclosing function. Do not stop for |
5361 | non-inlined functions - the locals of the enclosing function | |
5362 | are in scope for a nested function. */ | |
5363 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5364 | break; | |
5365 | b = BLOCK_SUPERBLOCK (b); | |
5366 | } | |
c906108c | 5367 | |
edb3359d | 5368 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5369 | |
2f68a895 TT |
5370 | if (code == TYPE_CODE_UNDEF) |
5371 | { | |
5372 | if (surrounding_static_block != NULL) | |
5373 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
5374 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
edb3359d | 5375 | |
2f68a895 TT |
5376 | if (surrounding_global_block != NULL) |
5377 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
5378 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
5379 | } | |
c906108c | 5380 | |
2f68a895 TT |
5381 | /* Skip macros if we are completing a struct tag -- arguable but |
5382 | usually what is expected. */ | |
5383 | if (current_language->la_macro_expansion == macro_expansion_c | |
5384 | && code == TYPE_CODE_UNDEF) | |
9a044a89 TT |
5385 | { |
5386 | struct macro_scope *scope; | |
9a044a89 TT |
5387 | |
5388 | /* Add any macros visible in the default scope. Note that this | |
5389 | may yield the occasional wrong result, because an expression | |
5390 | might be evaluated in a scope other than the default. For | |
5391 | example, if the user types "break file:line if <TAB>", the | |
5392 | resulting expression will be evaluated at "file:line" -- but | |
5393 | at there does not seem to be a way to detect this at | |
5394 | completion time. */ | |
5395 | scope = default_macro_scope (); | |
5396 | if (scope) | |
5397 | { | |
5398 | macro_for_each_in_scope (scope->file, scope->line, | |
5399 | add_macro_name, &datum); | |
5400 | xfree (scope); | |
5401 | } | |
5402 | ||
5403 | /* User-defined macros are always visible. */ | |
5404 | macro_for_each (macro_user_macros, add_macro_name, &datum); | |
5405 | } | |
5406 | ||
ef0b411a GB |
5407 | do_cleanups (cleanups); |
5408 | } | |
5409 | ||
5410 | VEC (char_ptr) * | |
5411 | default_make_symbol_completion_list_break_on (const char *text, | |
5412 | const char *word, | |
5413 | const char *break_on, | |
5414 | enum type_code code) | |
5415 | { | |
5416 | struct cleanup *back_to; | |
ef0b411a GB |
5417 | |
5418 | return_val = NULL; | |
5419 | back_to = make_cleanup (do_free_completion_list, &return_val); | |
5420 | ||
492d29ea | 5421 | TRY |
ef0b411a GB |
5422 | { |
5423 | default_make_symbol_completion_list_break_on_1 (text, word, | |
5424 | break_on, code); | |
5425 | } | |
492d29ea | 5426 | CATCH (except, RETURN_MASK_ERROR) |
ef0b411a GB |
5427 | { |
5428 | if (except.error != MAX_COMPLETIONS_REACHED_ERROR) | |
5429 | throw_exception (except); | |
5430 | } | |
492d29ea | 5431 | END_CATCH |
ef0b411a | 5432 | |
821296b7 | 5433 | discard_cleanups (back_to); |
ef0b411a | 5434 | return return_val; |
c906108c SS |
5435 | } |
5436 | ||
49c4e619 | 5437 | VEC (char_ptr) * |
6f937416 | 5438 | default_make_symbol_completion_list (const char *text, const char *word, |
2f68a895 | 5439 | enum type_code code) |
f55ee35c | 5440 | { |
2f68a895 | 5441 | return default_make_symbol_completion_list_break_on (text, word, "", code); |
f55ee35c JK |
5442 | } |
5443 | ||
49c4e619 TT |
5444 | /* Return a vector of all symbols (regardless of class) which begin by |
5445 | matching TEXT. If the answer is no symbols, then the return value | |
5446 | is NULL. */ | |
41d27058 | 5447 | |
49c4e619 | 5448 | VEC (char_ptr) * |
6f937416 | 5449 | make_symbol_completion_list (const char *text, const char *word) |
41d27058 | 5450 | { |
2f68a895 TT |
5451 | return current_language->la_make_symbol_completion_list (text, word, |
5452 | TYPE_CODE_UNDEF); | |
5453 | } | |
5454 | ||
5455 | /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN | |
5456 | symbols whose type code is CODE. */ | |
5457 | ||
5458 | VEC (char_ptr) * | |
6f937416 PA |
5459 | make_symbol_completion_type (const char *text, const char *word, |
5460 | enum type_code code) | |
2f68a895 TT |
5461 | { |
5462 | gdb_assert (code == TYPE_CODE_UNION | |
5463 | || code == TYPE_CODE_STRUCT | |
2f68a895 TT |
5464 | || code == TYPE_CODE_ENUM); |
5465 | return current_language->la_make_symbol_completion_list (text, word, code); | |
41d27058 JB |
5466 | } |
5467 | ||
d8906c6f TJB |
5468 | /* Like make_symbol_completion_list, but suitable for use as a |
5469 | completion function. */ | |
5470 | ||
49c4e619 | 5471 | VEC (char_ptr) * |
d8906c6f | 5472 | make_symbol_completion_list_fn (struct cmd_list_element *ignore, |
6f937416 | 5473 | const char *text, const char *word) |
d8906c6f TJB |
5474 | { |
5475 | return make_symbol_completion_list (text, word); | |
5476 | } | |
5477 | ||
c94fdfd0 EZ |
5478 | /* Like make_symbol_completion_list, but returns a list of symbols |
5479 | defined in a source file FILE. */ | |
5480 | ||
e27852be DE |
5481 | static VEC (char_ptr) * |
5482 | make_file_symbol_completion_list_1 (const char *text, const char *word, | |
5483 | const char *srcfile) | |
c94fdfd0 | 5484 | { |
52f0bd74 AC |
5485 | struct symbol *sym; |
5486 | struct symtab *s; | |
5487 | struct block *b; | |
8157b174 | 5488 | struct block_iterator iter; |
c94fdfd0 | 5489 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5490 | const char *sym_text; |
c94fdfd0 EZ |
5491 | /* Length of sym_text. */ |
5492 | int sym_text_len; | |
5493 | ||
5494 | /* Now look for the symbol we are supposed to complete on. | |
5495 | FIXME: This should be language-specific. */ | |
5496 | { | |
6f937416 | 5497 | const char *p; |
c94fdfd0 | 5498 | char quote_found; |
6f937416 | 5499 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5500 | |
5501 | /* First see if this is a quoted string. */ | |
5502 | quote_found = '\0'; | |
5503 | for (p = text; *p != '\0'; ++p) | |
5504 | { | |
5505 | if (quote_found != '\0') | |
5506 | { | |
5507 | if (*p == quote_found) | |
5508 | /* Found close quote. */ | |
5509 | quote_found = '\0'; | |
5510 | else if (*p == '\\' && p[1] == quote_found) | |
5511 | /* A backslash followed by the quote character | |
5512 | doesn't end the string. */ | |
5513 | ++p; | |
5514 | } | |
5515 | else if (*p == '\'' || *p == '"') | |
5516 | { | |
5517 | quote_found = *p; | |
5518 | quote_pos = p; | |
5519 | } | |
5520 | } | |
5521 | if (quote_found == '\'') | |
5522 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5523 | sym_text = quote_pos + 1; | |
5524 | else if (quote_found == '"') | |
5525 | /* A double-quoted string is never a symbol, nor does it make sense | |
5526 | to complete it any other way. */ | |
5527 | { | |
49c4e619 | 5528 | return NULL; |
c94fdfd0 EZ |
5529 | } |
5530 | else | |
5531 | { | |
69636828 AF |
5532 | /* Not a quoted string. */ |
5533 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5534 | } |
5535 | } | |
5536 | ||
5537 | sym_text_len = strlen (sym_text); | |
5538 | ||
c94fdfd0 EZ |
5539 | /* Find the symtab for SRCFILE (this loads it if it was not yet read |
5540 | in). */ | |
5541 | s = lookup_symtab (srcfile); | |
5542 | if (s == NULL) | |
5543 | { | |
5544 | /* Maybe they typed the file with leading directories, while the | |
5545 | symbol tables record only its basename. */ | |
31889e00 | 5546 | const char *tail = lbasename (srcfile); |
c94fdfd0 EZ |
5547 | |
5548 | if (tail > srcfile) | |
5549 | s = lookup_symtab (tail); | |
5550 | } | |
5551 | ||
5552 | /* If we have no symtab for that file, return an empty list. */ | |
5553 | if (s == NULL) | |
5554 | return (return_val); | |
5555 | ||
5556 | /* Go through this symtab and check the externs and statics for | |
5557 | symbols which match. */ | |
5558 | ||
439247b6 | 5559 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), GLOBAL_BLOCK); |
de4f826b | 5560 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 5561 | { |
c94fdfd0 EZ |
5562 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
5563 | } | |
5564 | ||
439247b6 | 5565 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 5566 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 5567 | { |
c94fdfd0 EZ |
5568 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
5569 | } | |
5570 | ||
5571 | return (return_val); | |
5572 | } | |
5573 | ||
e27852be DE |
5574 | /* Wrapper around make_file_symbol_completion_list_1 |
5575 | to handle MAX_COMPLETIONS_REACHED_ERROR. */ | |
5576 | ||
5577 | VEC (char_ptr) * | |
5578 | make_file_symbol_completion_list (const char *text, const char *word, | |
5579 | const char *srcfile) | |
5580 | { | |
5581 | struct cleanup *back_to, *cleanups; | |
5582 | ||
5583 | completion_tracker = new_completion_tracker (); | |
5584 | cleanups = make_cleanup_free_completion_tracker (&completion_tracker); | |
5585 | return_val = NULL; | |
5586 | back_to = make_cleanup (do_free_completion_list, &return_val); | |
5587 | ||
5588 | TRY | |
5589 | { | |
5590 | make_file_symbol_completion_list_1 (text, word, srcfile); | |
5591 | } | |
5592 | CATCH (except, RETURN_MASK_ERROR) | |
5593 | { | |
5594 | if (except.error != MAX_COMPLETIONS_REACHED_ERROR) | |
5595 | throw_exception (except); | |
5596 | } | |
5597 | END_CATCH | |
5598 | ||
5599 | discard_cleanups (back_to); | |
5600 | do_cleanups (cleanups); | |
5601 | return return_val; | |
5602 | } | |
5603 | ||
c94fdfd0 EZ |
5604 | /* A helper function for make_source_files_completion_list. It adds |
5605 | another file name to a list of possible completions, growing the | |
5606 | list as necessary. */ | |
5607 | ||
5608 | static void | |
6f937416 | 5609 | add_filename_to_list (const char *fname, const char *text, const char *word, |
49c4e619 | 5610 | VEC (char_ptr) **list) |
c94fdfd0 | 5611 | { |
fe978cb0 | 5612 | char *newobj; |
c94fdfd0 EZ |
5613 | size_t fnlen = strlen (fname); |
5614 | ||
c94fdfd0 EZ |
5615 | if (word == text) |
5616 | { | |
5617 | /* Return exactly fname. */ | |
224c3ddb | 5618 | newobj = (char *) xmalloc (fnlen + 5); |
fe978cb0 | 5619 | strcpy (newobj, fname); |
c94fdfd0 EZ |
5620 | } |
5621 | else if (word > text) | |
5622 | { | |
5623 | /* Return some portion of fname. */ | |
224c3ddb | 5624 | newobj = (char *) xmalloc (fnlen + 5); |
fe978cb0 | 5625 | strcpy (newobj, fname + (word - text)); |
c94fdfd0 EZ |
5626 | } |
5627 | else | |
5628 | { | |
5629 | /* Return some of TEXT plus fname. */ | |
224c3ddb | 5630 | newobj = (char *) xmalloc (fnlen + (text - word) + 5); |
fe978cb0 PA |
5631 | strncpy (newobj, word, text - word); |
5632 | newobj[text - word] = '\0'; | |
5633 | strcat (newobj, fname); | |
c94fdfd0 | 5634 | } |
fe978cb0 | 5635 | VEC_safe_push (char_ptr, *list, newobj); |
c94fdfd0 EZ |
5636 | } |
5637 | ||
5638 | static int | |
5639 | not_interesting_fname (const char *fname) | |
5640 | { | |
5641 | static const char *illegal_aliens[] = { | |
5642 | "_globals_", /* inserted by coff_symtab_read */ | |
5643 | NULL | |
5644 | }; | |
5645 | int i; | |
5646 | ||
5647 | for (i = 0; illegal_aliens[i]; i++) | |
5648 | { | |
0ba1096a | 5649 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5650 | return 1; |
5651 | } | |
5652 | return 0; | |
5653 | } | |
5654 | ||
ccefe4c4 TT |
5655 | /* An object of this type is passed as the user_data argument to |
5656 | map_partial_symbol_filenames. */ | |
5657 | struct add_partial_filename_data | |
5658 | { | |
9fdc877b | 5659 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5660 | const char *text; |
5661 | const char *word; | |
ccefe4c4 | 5662 | int text_len; |
49c4e619 | 5663 | VEC (char_ptr) **list; |
ccefe4c4 TT |
5664 | }; |
5665 | ||
5666 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5667 | |
ccefe4c4 | 5668 | static void |
2837d59e | 5669 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5670 | void *user_data) |
5671 | { | |
19ba03f4 SM |
5672 | struct add_partial_filename_data *data |
5673 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5674 | |
5675 | if (not_interesting_fname (filename)) | |
5676 | return; | |
9fdc877b | 5677 | if (!filename_seen (data->filename_seen_cache, filename, 1) |
0ba1096a | 5678 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5679 | { |
5680 | /* This file matches for a completion; add it to the | |
5681 | current list of matches. */ | |
49c4e619 | 5682 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5683 | } |
5684 | else | |
5685 | { | |
5686 | const char *base_name = lbasename (filename); | |
433759f7 | 5687 | |
ccefe4c4 | 5688 | if (base_name != filename |
9fdc877b | 5689 | && !filename_seen (data->filename_seen_cache, base_name, 1) |
0ba1096a | 5690 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5691 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5692 | } |
5693 | } | |
5694 | ||
49c4e619 TT |
5695 | /* Return a vector of all source files whose names begin with matching |
5696 | TEXT. The file names are looked up in the symbol tables of this | |
5697 | program. If the answer is no matchess, then the return value is | |
5698 | NULL. */ | |
c94fdfd0 | 5699 | |
49c4e619 | 5700 | VEC (char_ptr) * |
6f937416 | 5701 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5702 | { |
43f3e411 | 5703 | struct compunit_symtab *cu; |
52f0bd74 | 5704 | struct symtab *s; |
52f0bd74 | 5705 | struct objfile *objfile; |
c94fdfd0 | 5706 | size_t text_len = strlen (text); |
49c4e619 | 5707 | VEC (char_ptr) *list = NULL; |
31889e00 | 5708 | const char *base_name; |
ccefe4c4 | 5709 | struct add_partial_filename_data datum; |
9fdc877b DE |
5710 | struct filename_seen_cache *filename_seen_cache; |
5711 | struct cleanup *back_to, *cache_cleanup; | |
c94fdfd0 | 5712 | |
c94fdfd0 EZ |
5713 | if (!have_full_symbols () && !have_partial_symbols ()) |
5714 | return list; | |
5715 | ||
821296b7 SA |
5716 | back_to = make_cleanup (do_free_completion_list, &list); |
5717 | ||
9fdc877b DE |
5718 | filename_seen_cache = create_filename_seen_cache (); |
5719 | cache_cleanup = make_cleanup (delete_filename_seen_cache, | |
5720 | filename_seen_cache); | |
5721 | ||
43f3e411 | 5722 | ALL_FILETABS (objfile, cu, s) |
c94fdfd0 EZ |
5723 | { |
5724 | if (not_interesting_fname (s->filename)) | |
5725 | continue; | |
9fdc877b | 5726 | if (!filename_seen (filename_seen_cache, s->filename, 1) |
0ba1096a | 5727 | && filename_ncmp (s->filename, text, text_len) == 0) |
c94fdfd0 EZ |
5728 | { |
5729 | /* This file matches for a completion; add it to the current | |
5730 | list of matches. */ | |
49c4e619 | 5731 | add_filename_to_list (s->filename, text, word, &list); |
c94fdfd0 EZ |
5732 | } |
5733 | else | |
5734 | { | |
5735 | /* NOTE: We allow the user to type a base name when the | |
5736 | debug info records leading directories, but not the other | |
5737 | way around. This is what subroutines of breakpoint | |
5738 | command do when they parse file names. */ | |
31889e00 | 5739 | base_name = lbasename (s->filename); |
c94fdfd0 | 5740 | if (base_name != s->filename |
9fdc877b | 5741 | && !filename_seen (filename_seen_cache, base_name, 1) |
0ba1096a | 5742 | && filename_ncmp (base_name, text, text_len) == 0) |
49c4e619 | 5743 | add_filename_to_list (base_name, text, word, &list); |
c94fdfd0 EZ |
5744 | } |
5745 | } | |
5746 | ||
9fdc877b | 5747 | datum.filename_seen_cache = filename_seen_cache; |
ccefe4c4 TT |
5748 | datum.text = text; |
5749 | datum.word = word; | |
5750 | datum.text_len = text_len; | |
5751 | datum.list = &list; | |
bb4142cf DE |
5752 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5753 | 0 /*need_fullname*/); | |
9fdc877b DE |
5754 | |
5755 | do_cleanups (cache_cleanup); | |
821296b7 | 5756 | discard_cleanups (back_to); |
c94fdfd0 EZ |
5757 | |
5758 | return list; | |
5759 | } | |
c906108c | 5760 | \f |
51cc5b07 | 5761 | /* Track MAIN */ |
32ac0d11 TT |
5762 | |
5763 | /* Return the "main_info" object for the current program space. If | |
5764 | the object has not yet been created, create it and fill in some | |
5765 | default values. */ | |
5766 | ||
5767 | static struct main_info * | |
5768 | get_main_info (void) | |
5769 | { | |
19ba03f4 SM |
5770 | struct main_info *info |
5771 | = (struct main_info *) program_space_data (current_program_space, | |
32ac0d11 TT |
5772 | main_progspace_key); |
5773 | ||
5774 | if (info == NULL) | |
5775 | { | |
3d548a53 TT |
5776 | /* It may seem strange to store the main name in the progspace |
5777 | and also in whatever objfile happens to see a main name in | |
5778 | its debug info. The reason for this is mainly historical: | |
5779 | gdb returned "main" as the name even if no function named | |
5780 | "main" was defined the program; and this approach lets us | |
5781 | keep compatibility. */ | |
32ac0d11 TT |
5782 | info = XCNEW (struct main_info); |
5783 | info->language_of_main = language_unknown; | |
5784 | set_program_space_data (current_program_space, main_progspace_key, | |
5785 | info); | |
5786 | } | |
5787 | ||
5788 | return info; | |
5789 | } | |
5790 | ||
5791 | /* A cleanup to destroy a struct main_info when a progspace is | |
5792 | destroyed. */ | |
5793 | ||
5794 | static void | |
5795 | main_info_cleanup (struct program_space *pspace, void *data) | |
5796 | { | |
19ba03f4 | 5797 | struct main_info *info = (struct main_info *) data; |
32ac0d11 TT |
5798 | |
5799 | if (info != NULL) | |
5800 | xfree (info->name_of_main); | |
5801 | xfree (info); | |
5802 | } | |
51cc5b07 | 5803 | |
3d548a53 | 5804 | static void |
9e6c82ad | 5805 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5806 | { |
32ac0d11 TT |
5807 | struct main_info *info = get_main_info (); |
5808 | ||
5809 | if (info->name_of_main != NULL) | |
51cc5b07 | 5810 | { |
32ac0d11 TT |
5811 | xfree (info->name_of_main); |
5812 | info->name_of_main = NULL; | |
5813 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5814 | } |
5815 | if (name != NULL) | |
5816 | { | |
32ac0d11 TT |
5817 | info->name_of_main = xstrdup (name); |
5818 | info->language_of_main = lang; | |
51cc5b07 AC |
5819 | } |
5820 | } | |
5821 | ||
ea53e89f JB |
5822 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5823 | accordingly. */ | |
5824 | ||
5825 | static void | |
5826 | find_main_name (void) | |
5827 | { | |
cd6c7346 | 5828 | const char *new_main_name; |
3d548a53 TT |
5829 | struct objfile *objfile; |
5830 | ||
5831 | /* First check the objfiles to see whether a debuginfo reader has | |
5832 | picked up the appropriate main name. Historically the main name | |
5833 | was found in a more or less random way; this approach instead | |
5834 | relies on the order of objfile creation -- which still isn't | |
5835 | guaranteed to get the correct answer, but is just probably more | |
5836 | accurate. */ | |
5837 | ALL_OBJFILES (objfile) | |
5838 | { | |
5839 | if (objfile->per_bfd->name_of_main != NULL) | |
5840 | { | |
5841 | set_main_name (objfile->per_bfd->name_of_main, | |
5842 | objfile->per_bfd->language_of_main); | |
5843 | return; | |
5844 | } | |
5845 | } | |
ea53e89f JB |
5846 | |
5847 | /* Try to see if the main procedure is in Ada. */ | |
5848 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5849 | be to add a new method in the language vector, and call this | |
5850 | method for each language until one of them returns a non-empty | |
5851 | name. This would allow us to remove this hard-coded call to | |
5852 | an Ada function. It is not clear that this is a better approach | |
5853 | at this point, because all methods need to be written in a way | |
c378eb4e | 5854 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5855 | important that a method does not return a wrong name for the main |
5856 | procedure if the main procedure is actually written in a different | |
5857 | language. It is easy to guaranty this with Ada, since we use a | |
5858 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5859 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5860 | be guarantied for languages such as C, for instance. This suggests |
5861 | that order of call for these methods becomes important, which means | |
5862 | a more complicated approach. */ | |
5863 | new_main_name = ada_main_name (); | |
5864 | if (new_main_name != NULL) | |
9af17804 | 5865 | { |
9e6c82ad | 5866 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5867 | return; |
5868 | } | |
5869 | ||
63778547 IB |
5870 | new_main_name = d_main_name (); |
5871 | if (new_main_name != NULL) | |
5872 | { | |
5873 | set_main_name (new_main_name, language_d); | |
5874 | return; | |
5875 | } | |
5876 | ||
a766d390 DE |
5877 | new_main_name = go_main_name (); |
5878 | if (new_main_name != NULL) | |
5879 | { | |
9e6c82ad | 5880 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5881 | return; |
5882 | } | |
5883 | ||
cd6c7346 PM |
5884 | new_main_name = pascal_main_name (); |
5885 | if (new_main_name != NULL) | |
9af17804 | 5886 | { |
9e6c82ad | 5887 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5888 | return; |
5889 | } | |
5890 | ||
ea53e89f JB |
5891 | /* The languages above didn't identify the name of the main procedure. |
5892 | Fallback to "main". */ | |
9e6c82ad | 5893 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5894 | } |
5895 | ||
51cc5b07 AC |
5896 | char * |
5897 | main_name (void) | |
5898 | { | |
32ac0d11 TT |
5899 | struct main_info *info = get_main_info (); |
5900 | ||
5901 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5902 | find_main_name (); |
5903 | ||
32ac0d11 | 5904 | return info->name_of_main; |
51cc5b07 AC |
5905 | } |
5906 | ||
9e6c82ad TT |
5907 | /* Return the language of the main function. If it is not known, |
5908 | return language_unknown. */ | |
5909 | ||
5910 | enum language | |
5911 | main_language (void) | |
5912 | { | |
32ac0d11 TT |
5913 | struct main_info *info = get_main_info (); |
5914 | ||
5915 | if (info->name_of_main == NULL) | |
5916 | find_main_name (); | |
5917 | ||
5918 | return info->language_of_main; | |
9e6c82ad TT |
5919 | } |
5920 | ||
ea53e89f JB |
5921 | /* Handle ``executable_changed'' events for the symtab module. */ |
5922 | ||
5923 | static void | |
781b42b0 | 5924 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5925 | { |
5926 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5927 | set_main_name (NULL, language_unknown); |
ea53e89f | 5928 | } |
51cc5b07 | 5929 | |
a6c727b2 DJ |
5930 | /* Return 1 if the supplied producer string matches the ARM RealView |
5931 | compiler (armcc). */ | |
5932 | ||
5933 | int | |
5934 | producer_is_realview (const char *producer) | |
5935 | { | |
5936 | static const char *const arm_idents[] = { | |
5937 | "ARM C Compiler, ADS", | |
5938 | "Thumb C Compiler, ADS", | |
5939 | "ARM C++ Compiler, ADS", | |
5940 | "Thumb C++ Compiler, ADS", | |
5941 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5942 | "ARM C/C++ Compiler, RVCT" | |
5943 | }; | |
5944 | int i; | |
5945 | ||
5946 | if (producer == NULL) | |
5947 | return 0; | |
5948 | ||
5949 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 5950 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
5951 | return 1; |
5952 | ||
5953 | return 0; | |
5954 | } | |
ed0616c6 | 5955 | |
f1e6e072 TT |
5956 | \f |
5957 | ||
5958 | /* The next index to hand out in response to a registration request. */ | |
5959 | ||
5960 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5961 | ||
5962 | /* The maximum number of "aclass" registrations we support. This is | |
5963 | constant for convenience. */ | |
5964 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5965 | ||
5966 | /* The objects representing the various "aclass" values. The elements | |
5967 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5968 | elements are those registered at gdb initialization time. */ | |
5969 | ||
5970 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5971 | ||
5972 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5973 | so that it can be const. */ | |
5974 | ||
5975 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5976 | ||
5977 | /* Make sure we saved enough room in struct symbol. */ | |
5978 | ||
5979 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5980 | ||
5981 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5982 | is the ops vector associated with this index. This returns the new | |
5983 | index, which should be used as the aclass_index field for symbols | |
5984 | of this type. */ | |
5985 | ||
5986 | int | |
5987 | register_symbol_computed_impl (enum address_class aclass, | |
5988 | const struct symbol_computed_ops *ops) | |
5989 | { | |
5990 | int result = next_aclass_value++; | |
5991 | ||
5992 | gdb_assert (aclass == LOC_COMPUTED); | |
5993 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5994 | symbol_impl[result].aclass = aclass; | |
5995 | symbol_impl[result].ops_computed = ops; | |
5996 | ||
24d6c2a0 TT |
5997 | /* Sanity check OPS. */ |
5998 | gdb_assert (ops != NULL); | |
5999 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
6000 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 6001 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
6002 | gdb_assert (ops->read_variable != NULL); |
6003 | ||
f1e6e072 TT |
6004 | return result; |
6005 | } | |
6006 | ||
6007 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
6008 | OPS is the ops vector associated with this index. This returns the | |
6009 | new index, which should be used as the aclass_index field for symbols | |
6010 | of this type. */ | |
6011 | ||
6012 | int | |
6013 | register_symbol_block_impl (enum address_class aclass, | |
6014 | const struct symbol_block_ops *ops) | |
6015 | { | |
6016 | int result = next_aclass_value++; | |
6017 | ||
6018 | gdb_assert (aclass == LOC_BLOCK); | |
6019 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6020 | symbol_impl[result].aclass = aclass; | |
6021 | symbol_impl[result].ops_block = ops; | |
6022 | ||
6023 | /* Sanity check OPS. */ | |
6024 | gdb_assert (ops != NULL); | |
6025 | gdb_assert (ops->find_frame_base_location != NULL); | |
6026 | ||
6027 | return result; | |
6028 | } | |
6029 | ||
6030 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
6031 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
6032 | this index. This returns the new index, which should be used as | |
6033 | the aclass_index field for symbols of this type. */ | |
6034 | ||
6035 | int | |
6036 | register_symbol_register_impl (enum address_class aclass, | |
6037 | const struct symbol_register_ops *ops) | |
6038 | { | |
6039 | int result = next_aclass_value++; | |
6040 | ||
6041 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
6042 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
6043 | symbol_impl[result].aclass = aclass; | |
6044 | symbol_impl[result].ops_register = ops; | |
6045 | ||
6046 | return result; | |
6047 | } | |
6048 | ||
6049 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
6050 | address_class. */ | |
6051 | ||
6052 | static void | |
6053 | initialize_ordinary_address_classes (void) | |
6054 | { | |
6055 | int i; | |
6056 | ||
6057 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 6058 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
6059 | } |
6060 | ||
6061 | \f | |
6062 | ||
1994afbf DE |
6063 | /* Helper function to initialize the fields of an objfile-owned symbol. |
6064 | It assumed that *SYM is already all zeroes. */ | |
6065 | ||
6066 | static void | |
6067 | initialize_objfile_symbol_1 (struct symbol *sym) | |
6068 | { | |
6069 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
6070 | SYMBOL_SECTION (sym) = -1; | |
6071 | } | |
6072 | ||
6073 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
6074 | |
6075 | void | |
38bf1463 | 6076 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
6077 | { |
6078 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 6079 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
6080 | } |
6081 | ||
6082 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
6083 | obstack. */ | |
6084 | ||
6085 | struct symbol * | |
6086 | allocate_symbol (struct objfile *objfile) | |
6087 | { | |
6088 | struct symbol *result; | |
6089 | ||
6090 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 6091 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
6092 | |
6093 | return result; | |
6094 | } | |
6095 | ||
6096 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
6097 | obstack. */ | |
6098 | ||
6099 | struct template_symbol * | |
6100 | allocate_template_symbol (struct objfile *objfile) | |
6101 | { | |
6102 | struct template_symbol *result; | |
6103 | ||
6104 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
1994afbf | 6105 | initialize_objfile_symbol_1 (&result->base); |
e623cf5d TT |
6106 | |
6107 | return result; | |
6108 | } | |
6109 | ||
08be3fe3 DE |
6110 | /* See symtab.h. */ |
6111 | ||
6112 | struct objfile * | |
6113 | symbol_objfile (const struct symbol *symbol) | |
6114 | { | |
1994afbf DE |
6115 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6116 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
6117 | } |
6118 | ||
6119 | /* See symtab.h. */ | |
6120 | ||
6121 | struct gdbarch * | |
6122 | symbol_arch (const struct symbol *symbol) | |
6123 | { | |
1994afbf DE |
6124 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
6125 | return symbol->owner.arch; | |
6126 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
6127 | } |
6128 | ||
6129 | /* See symtab.h. */ | |
6130 | ||
6131 | struct symtab * | |
6132 | symbol_symtab (const struct symbol *symbol) | |
6133 | { | |
1994afbf DE |
6134 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6135 | return symbol->owner.symtab; | |
08be3fe3 DE |
6136 | } |
6137 | ||
6138 | /* See symtab.h. */ | |
6139 | ||
6140 | void | |
6141 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
6142 | { | |
1994afbf DE |
6143 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
6144 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
6145 | } |
6146 | ||
e623cf5d TT |
6147 | \f |
6148 | ||
c906108c | 6149 | void |
fba45db2 | 6150 | _initialize_symtab (void) |
c906108c | 6151 | { |
f1e6e072 TT |
6152 | initialize_ordinary_address_classes (); |
6153 | ||
32ac0d11 TT |
6154 | main_progspace_key |
6155 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
6156 | ||
f57d2163 DE |
6157 | symbol_cache_key |
6158 | = register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup); | |
6159 | ||
1bedd215 AC |
6160 | add_info ("variables", variables_info, _("\ |
6161 | All global and static variable names, or those matching REGEXP.")); | |
c906108c | 6162 | if (dbx_commands) |
1bedd215 AC |
6163 | add_com ("whereis", class_info, variables_info, _("\ |
6164 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
6165 | |
6166 | add_info ("functions", functions_info, | |
1bedd215 | 6167 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
6168 | |
6169 | /* FIXME: This command has at least the following problems: | |
6170 | 1. It prints builtin types (in a very strange and confusing fashion). | |
6171 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
6172 | typedef struct foo *FOO |
6173 | type_print prints "FOO" when we want to make it (in this situation) | |
6174 | print "struct foo *". | |
c906108c SS |
6175 | I also think "ptype" or "whatis" is more likely to be useful (but if |
6176 | there is much disagreement "info types" can be fixed). */ | |
6177 | add_info ("types", types_info, | |
1bedd215 | 6178 | _("All type names, or those matching REGEXP.")); |
c906108c | 6179 | |
c906108c | 6180 | add_info ("sources", sources_info, |
1bedd215 | 6181 | _("Source files in the program.")); |
c906108c SS |
6182 | |
6183 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 6184 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 6185 | |
717d2f5a JB |
6186 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
6187 | multiple_symbols_modes, &multiple_symbols_mode, | |
6188 | _("\ | |
6189 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
6190 | in an expression."), _("\ | |
6191 | Show how the debugger handles ambiguities in expressions."), _("\ | |
6192 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
6193 | NULL, NULL, &setlist, &showlist); | |
6194 | ||
c011a4f4 DE |
6195 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
6196 | &basenames_may_differ, _("\ | |
6197 | Set whether a source file may have multiple base names."), _("\ | |
6198 | Show whether a source file may have multiple base names."), _("\ | |
6199 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
6200 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
6201 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
6202 | before comparing them. Canonicalization is an expensive operation,\n\ | |
6203 | but it allows the same file be known by more than one base name.\n\ | |
6204 | If not set (the default), all source files are assumed to have just\n\ | |
6205 | one base name, and gdb will do file name comparisons more efficiently."), | |
6206 | NULL, NULL, | |
6207 | &setlist, &showlist); | |
6208 | ||
db0fec5c DE |
6209 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
6210 | _("Set debugging of symbol table creation."), | |
6211 | _("Show debugging of symbol table creation."), _("\ | |
6212 | When enabled (non-zero), debugging messages are printed when building\n\ | |
6213 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
6214 | A value greater than 1 provides more verbose information."), | |
6215 | NULL, | |
6216 | NULL, | |
6217 | &setdebuglist, &showdebuglist); | |
45cfd468 | 6218 | |
cc485e62 DE |
6219 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
6220 | _("\ | |
6221 | Set debugging of symbol lookup."), _("\ | |
6222 | Show debugging of symbol lookup."), _("\ | |
6223 | When enabled (non-zero), symbol lookups are logged."), | |
6224 | NULL, NULL, | |
6225 | &setdebuglist, &showdebuglist); | |
6226 | ||
f57d2163 DE |
6227 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
6228 | &new_symbol_cache_size, | |
6229 | _("Set the size of the symbol cache."), | |
6230 | _("Show the size of the symbol cache."), _("\ | |
6231 | The size of the symbol cache.\n\ | |
6232 | If zero then the symbol cache is disabled."), | |
6233 | set_symbol_cache_size_handler, NULL, | |
6234 | &maintenance_set_cmdlist, | |
6235 | &maintenance_show_cmdlist); | |
6236 | ||
6237 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
6238 | _("Dump the symbol cache for each program space."), | |
6239 | &maintenanceprintlist); | |
6240 | ||
6241 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
6242 | maintenance_print_symbol_cache_statistics, | |
6243 | _("Print symbol cache statistics for each program space."), | |
6244 | &maintenanceprintlist); | |
6245 | ||
6246 | add_cmd ("flush-symbol-cache", class_maintenance, | |
6247 | maintenance_flush_symbol_cache, | |
6248 | _("Flush the symbol cache for each program space."), | |
6249 | &maintenancelist); | |
6250 | ||
ea53e89f | 6251 | observer_attach_executable_changed (symtab_observer_executable_changed); |
f57d2163 DE |
6252 | observer_attach_new_objfile (symtab_new_objfile_observer); |
6253 | observer_attach_free_objfile (symtab_free_objfile_observer); | |
c906108c | 6254 | } |