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" |
5ed8105e | 64 | #include "progspace-and-thread.h" |
2d7cc5c7 | 65 | #include "common/gdb_optional.h" |
bbf2f4df | 66 | #include "filename-seen-cache.h" |
46a62268 | 67 | #include "arch-utils.h" |
b9c04fb2 | 68 | #include <algorithm> |
ccefe4c4 | 69 | |
ff6c39cf | 70 | /* Forward declarations for local functions. */ |
c906108c | 71 | |
a14ed312 | 72 | static void rbreak_command (char *, int); |
c906108c | 73 | |
f8eba3c6 | 74 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 75 | |
d12307c1 PMR |
76 | static struct block_symbol |
77 | lookup_symbol_aux (const char *name, | |
78 | const struct block *block, | |
79 | const domain_enum domain, | |
80 | enum language language, | |
81 | struct field_of_this_result *); | |
fba7f19c | 82 | |
e4051eeb | 83 | static |
d12307c1 PMR |
84 | struct block_symbol lookup_local_symbol (const char *name, |
85 | const struct block *block, | |
86 | const domain_enum domain, | |
87 | enum language language); | |
8155455b | 88 | |
d12307c1 | 89 | static struct block_symbol |
fe2a438d DE |
90 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
91 | const char *name, const domain_enum domain); | |
c906108c | 92 | |
b6b80672 PA |
93 | /* See symtab.h. */ |
94 | const struct block_symbol null_block_symbol = { NULL, NULL }; | |
95 | ||
32ac0d11 TT |
96 | /* Program space key for finding name and language of "main". */ |
97 | ||
98 | static const struct program_space_data *main_progspace_key; | |
99 | ||
100 | /* Type of the data stored on the program space. */ | |
101 | ||
102 | struct main_info | |
103 | { | |
104 | /* Name of "main". */ | |
105 | ||
106 | char *name_of_main; | |
107 | ||
108 | /* Language of "main". */ | |
109 | ||
110 | enum language language_of_main; | |
111 | }; | |
112 | ||
f57d2163 DE |
113 | /* Program space key for finding its symbol cache. */ |
114 | ||
115 | static const struct program_space_data *symbol_cache_key; | |
116 | ||
117 | /* The default symbol cache size. | |
118 | There is no extra cpu cost for large N (except when flushing the cache, | |
119 | which is rare). The value here is just a first attempt. A better default | |
120 | value may be higher or lower. A prime number can make up for a bad hash | |
121 | computation, so that's why the number is what it is. */ | |
122 | #define DEFAULT_SYMBOL_CACHE_SIZE 1021 | |
123 | ||
124 | /* The maximum symbol cache size. | |
125 | There's no method to the decision of what value to use here, other than | |
126 | there's no point in allowing a user typo to make gdb consume all memory. */ | |
127 | #define MAX_SYMBOL_CACHE_SIZE (1024*1024) | |
128 | ||
129 | /* symbol_cache_lookup returns this if a previous lookup failed to find the | |
130 | symbol in any objfile. */ | |
d12307c1 PMR |
131 | #define SYMBOL_LOOKUP_FAILED \ |
132 | ((struct block_symbol) {(struct symbol *) 1, NULL}) | |
133 | #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1) | |
f57d2163 DE |
134 | |
135 | /* Recording lookups that don't find the symbol is just as important, if not | |
136 | more so, than recording found symbols. */ | |
137 | ||
138 | enum symbol_cache_slot_state | |
139 | { | |
140 | SYMBOL_SLOT_UNUSED, | |
141 | SYMBOL_SLOT_NOT_FOUND, | |
142 | SYMBOL_SLOT_FOUND | |
143 | }; | |
144 | ||
52059ffd TT |
145 | struct symbol_cache_slot |
146 | { | |
147 | enum symbol_cache_slot_state state; | |
148 | ||
149 | /* The objfile that was current when the symbol was looked up. | |
150 | This is only needed for global blocks, but for simplicity's sake | |
151 | we allocate the space for both. If data shows the extra space used | |
152 | for static blocks is a problem, we can split things up then. | |
153 | ||
154 | Global blocks need cache lookup to include the objfile context because | |
155 | we need to account for gdbarch_iterate_over_objfiles_in_search_order | |
156 | which can traverse objfiles in, effectively, any order, depending on | |
157 | the current objfile, thus affecting which symbol is found. Normally, | |
158 | only the current objfile is searched first, and then the rest are | |
159 | searched in recorded order; but putting cache lookup inside | |
160 | gdbarch_iterate_over_objfiles_in_search_order would be awkward. | |
161 | Instead we just make the current objfile part of the context of | |
162 | cache lookup. This means we can record the same symbol multiple times, | |
163 | each with a different "current objfile" that was in effect when the | |
164 | lookup was saved in the cache, but cache space is pretty cheap. */ | |
165 | const struct objfile *objfile_context; | |
166 | ||
167 | union | |
168 | { | |
d12307c1 | 169 | struct block_symbol found; |
52059ffd TT |
170 | struct |
171 | { | |
172 | char *name; | |
173 | domain_enum domain; | |
174 | } not_found; | |
175 | } value; | |
176 | }; | |
177 | ||
f57d2163 DE |
178 | /* Symbols don't specify global vs static block. |
179 | So keep them in separate caches. */ | |
180 | ||
181 | struct block_symbol_cache | |
182 | { | |
183 | unsigned int hits; | |
184 | unsigned int misses; | |
185 | unsigned int collisions; | |
186 | ||
187 | /* SYMBOLS is a variable length array of this size. | |
188 | One can imagine that in general one cache (global/static) should be a | |
189 | fraction of the size of the other, but there's no data at the moment | |
190 | on which to decide. */ | |
191 | unsigned int size; | |
192 | ||
52059ffd | 193 | struct symbol_cache_slot symbols[1]; |
f57d2163 DE |
194 | }; |
195 | ||
196 | /* The symbol cache. | |
197 | ||
198 | Searching for symbols in the static and global blocks over multiple objfiles | |
199 | again and again can be slow, as can searching very big objfiles. This is a | |
200 | simple cache to improve symbol lookup performance, which is critical to | |
201 | overall gdb performance. | |
202 | ||
203 | Symbols are hashed on the name, its domain, and block. | |
204 | They are also hashed on their objfile for objfile-specific lookups. */ | |
205 | ||
206 | struct symbol_cache | |
207 | { | |
208 | struct block_symbol_cache *global_symbols; | |
209 | struct block_symbol_cache *static_symbols; | |
210 | }; | |
211 | ||
45cfd468 | 212 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 213 | unsigned int symtab_create_debug = 0; |
45cfd468 | 214 | |
cc485e62 DE |
215 | /* When non-zero, print debugging messages related to symbol lookup. */ |
216 | unsigned int symbol_lookup_debug = 0; | |
217 | ||
f57d2163 DE |
218 | /* The size of the cache is staged here. */ |
219 | static unsigned int new_symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
220 | ||
221 | /* The current value of the symbol cache size. | |
222 | This is saved so that if the user enters a value too big we can restore | |
223 | the original value from here. */ | |
224 | static unsigned int symbol_cache_size = DEFAULT_SYMBOL_CACHE_SIZE; | |
225 | ||
c011a4f4 DE |
226 | /* Non-zero if a file may be known by two different basenames. |
227 | This is the uncommon case, and significantly slows down gdb. | |
228 | Default set to "off" to not slow down the common case. */ | |
229 | int basenames_may_differ = 0; | |
230 | ||
717d2f5a JB |
231 | /* Allow the user to configure the debugger behavior with respect |
232 | to multiple-choice menus when more than one symbol matches during | |
233 | a symbol lookup. */ | |
234 | ||
7fc830e2 MK |
235 | const char multiple_symbols_ask[] = "ask"; |
236 | const char multiple_symbols_all[] = "all"; | |
237 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 238 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
239 | { |
240 | multiple_symbols_ask, | |
241 | multiple_symbols_all, | |
242 | multiple_symbols_cancel, | |
243 | NULL | |
244 | }; | |
245 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
246 | ||
247 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
248 | ||
249 | const char * | |
250 | multiple_symbols_select_mode (void) | |
251 | { | |
252 | return multiple_symbols_mode; | |
253 | } | |
254 | ||
20c681d1 DE |
255 | /* Return the name of a domain_enum. */ |
256 | ||
257 | const char * | |
258 | domain_name (domain_enum e) | |
259 | { | |
260 | switch (e) | |
261 | { | |
262 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
263 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
264 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 265 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
266 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
267 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
268 | default: gdb_assert_not_reached ("bad domain_enum"); | |
269 | } | |
270 | } | |
271 | ||
272 | /* Return the name of a search_domain . */ | |
273 | ||
274 | const char * | |
275 | search_domain_name (enum search_domain e) | |
276 | { | |
277 | switch (e) | |
278 | { | |
279 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
280 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
281 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
282 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
283 | default: gdb_assert_not_reached ("bad search_domain"); | |
284 | } | |
285 | } | |
286 | ||
43f3e411 | 287 | /* See symtab.h. */ |
db0fec5c | 288 | |
43f3e411 DE |
289 | struct symtab * |
290 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 291 | { |
43f3e411 | 292 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 293 | |
43f3e411 DE |
294 | /* The primary file symtab is the first one in the list. */ |
295 | return COMPUNIT_FILETABS (cust); | |
296 | } | |
297 | ||
298 | /* See symtab.h. */ | |
299 | ||
300 | enum language | |
301 | compunit_language (const struct compunit_symtab *cust) | |
302 | { | |
303 | struct symtab *symtab = compunit_primary_filetab (cust); | |
304 | ||
305 | /* The language of the compunit symtab is the language of its primary | |
306 | source file. */ | |
307 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
308 | } |
309 | ||
4aac40c8 TT |
310 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
311 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
312 | describes what we advertise). Returns true if they match, false |
313 | otherwise. */ | |
4aac40c8 TT |
314 | |
315 | int | |
b57a636e | 316 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
317 | { |
318 | int len = strlen (filename); | |
b57a636e | 319 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
320 | |
321 | if (len < search_len) | |
322 | return 0; | |
323 | ||
324 | /* The tail of FILENAME must match. */ | |
325 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
326 | return 0; | |
327 | ||
328 | /* Either the names must completely match, or the character | |
329 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
330 | directory separator. |
331 | ||
af529f8f JK |
332 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
333 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
334 | absolute path. The sama applies for "c:\file.c" possibly | |
335 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
336 | ||
d84fca2c JK |
337 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
338 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
339 | to put the "c:file.c" name into debug info. Such compatibility | |
340 | works only on GDB built for DOS host. */ | |
4aac40c8 | 341 | return (len == search_len |
af529f8f JK |
342 | || (!IS_ABSOLUTE_PATH (search_name) |
343 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
344 | || (HAS_DRIVE_SPEC (filename) |
345 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
346 | } | |
347 | ||
cce0e923 DE |
348 | /* Same as compare_filenames_for_search, but for glob-style patterns. |
349 | Heads up on the order of the arguments. They match the order of | |
350 | compare_filenames_for_search, but it's the opposite of the order of | |
351 | arguments to gdb_filename_fnmatch. */ | |
352 | ||
353 | int | |
354 | compare_glob_filenames_for_search (const char *filename, | |
355 | const char *search_name) | |
356 | { | |
357 | /* We rely on the property of glob-style patterns with FNM_FILE_NAME that | |
358 | all /s have to be explicitly specified. */ | |
359 | int file_path_elements = count_path_elements (filename); | |
360 | int search_path_elements = count_path_elements (search_name); | |
361 | ||
362 | if (search_path_elements > file_path_elements) | |
363 | return 0; | |
364 | ||
365 | if (IS_ABSOLUTE_PATH (search_name)) | |
366 | { | |
367 | return (search_path_elements == file_path_elements | |
368 | && gdb_filename_fnmatch (search_name, filename, | |
369 | FNM_FILE_NAME | FNM_NOESCAPE) == 0); | |
370 | } | |
371 | ||
372 | { | |
373 | const char *file_to_compare | |
374 | = strip_leading_path_elements (filename, | |
375 | file_path_elements - search_path_elements); | |
376 | ||
377 | return gdb_filename_fnmatch (search_name, file_to_compare, | |
378 | FNM_FILE_NAME | FNM_NOESCAPE) == 0; | |
379 | } | |
380 | } | |
381 | ||
f8eba3c6 TT |
382 | /* Check for a symtab of a specific name by searching some symtabs. |
383 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 384 | |
b2d23133 DE |
385 | If NAME is not absolute, then REAL_PATH is NULL |
386 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
387 | ||
14bc53a8 PA |
388 | The return value, NAME, REAL_PATH and CALLBACK are identical to the |
389 | `map_symtabs_matching_filename' method of quick_symbol_functions. | |
f8eba3c6 | 390 | |
43f3e411 DE |
391 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
392 | Each symtab within the specified compunit symtab is also searched. | |
393 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
394 | search until the end of the list. */ |
395 | ||
14bc53a8 | 396 | bool |
f8eba3c6 | 397 | iterate_over_some_symtabs (const char *name, |
f8eba3c6 | 398 | const char *real_path, |
43f3e411 | 399 | struct compunit_symtab *first, |
14bc53a8 PA |
400 | struct compunit_symtab *after_last, |
401 | gdb::function_view<bool (symtab *)> callback) | |
c906108c | 402 | { |
43f3e411 DE |
403 | struct compunit_symtab *cust; |
404 | struct symtab *s; | |
c011a4f4 | 405 | const char* base_name = lbasename (name); |
1f84b619 | 406 | |
43f3e411 | 407 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 408 | { |
43f3e411 | 409 | ALL_COMPUNIT_FILETABS (cust, s) |
a94e8645 | 410 | { |
43f3e411 DE |
411 | if (compare_filenames_for_search (s->filename, name)) |
412 | { | |
14bc53a8 PA |
413 | if (callback (s)) |
414 | return true; | |
43f3e411 DE |
415 | continue; |
416 | } | |
a94e8645 | 417 | |
43f3e411 DE |
418 | /* Before we invoke realpath, which can get expensive when many |
419 | files are involved, do a quick comparison of the basenames. */ | |
420 | if (! basenames_may_differ | |
421 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
422 | continue; | |
a94e8645 | 423 | |
43f3e411 | 424 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 | 425 | { |
14bc53a8 PA |
426 | if (callback (s)) |
427 | return true; | |
a94e8645 DE |
428 | continue; |
429 | } | |
43f3e411 DE |
430 | |
431 | /* If the user gave us an absolute path, try to find the file in | |
432 | this symtab and use its absolute path. */ | |
433 | if (real_path != NULL) | |
434 | { | |
435 | const char *fullname = symtab_to_fullname (s); | |
436 | ||
437 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
438 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
439 | if (FILENAME_CMP (real_path, fullname) == 0) | |
440 | { | |
14bc53a8 PA |
441 | if (callback (s)) |
442 | return true; | |
43f3e411 DE |
443 | continue; |
444 | } | |
445 | } | |
a94e8645 | 446 | } |
f8eba3c6 | 447 | } |
58d370e0 | 448 | |
14bc53a8 | 449 | return false; |
f8eba3c6 TT |
450 | } |
451 | ||
452 | /* Check for a symtab of a specific name; first in symtabs, then in | |
453 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
454 | in the symtab filename will also work. | |
455 | ||
14bc53a8 PA |
456 | Calls CALLBACK with each symtab that is found. If CALLBACK returns |
457 | true, the search stops. */ | |
f8eba3c6 TT |
458 | |
459 | void | |
460 | iterate_over_symtabs (const char *name, | |
14bc53a8 | 461 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 462 | { |
f8eba3c6 | 463 | struct objfile *objfile; |
14bc53a8 | 464 | gdb::unique_xmalloc_ptr<char> real_path; |
f8eba3c6 TT |
465 | |
466 | /* Here we are interested in canonicalizing an absolute path, not | |
467 | absolutizing a relative path. */ | |
468 | if (IS_ABSOLUTE_PATH (name)) | |
469 | { | |
14278e1f | 470 | real_path = gdb_realpath (name); |
14bc53a8 | 471 | gdb_assert (IS_ABSOLUTE_PATH (real_path.get ())); |
f8eba3c6 TT |
472 | } |
473 | ||
474 | ALL_OBJFILES (objfile) | |
14bc53a8 PA |
475 | { |
476 | if (iterate_over_some_symtabs (name, real_path.get (), | |
477 | objfile->compunit_symtabs, NULL, | |
478 | callback)) | |
f8eba3c6 | 479 | return; |
14bc53a8 | 480 | } |
f8eba3c6 | 481 | |
c906108c SS |
482 | /* Same search rules as above apply here, but now we look thru the |
483 | psymtabs. */ | |
484 | ||
ccefe4c4 | 485 | ALL_OBJFILES (objfile) |
14bc53a8 PA |
486 | { |
487 | if (objfile->sf | |
488 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, | |
489 | name, | |
490 | real_path.get (), | |
491 | callback)) | |
f8eba3c6 | 492 | return; |
14bc53a8 | 493 | } |
c906108c | 494 | } |
f8eba3c6 TT |
495 | |
496 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
497 | symtab, or NULL. */ | |
498 | ||
499 | struct symtab * | |
500 | lookup_symtab (const char *name) | |
501 | { | |
502 | struct symtab *result = NULL; | |
503 | ||
14bc53a8 PA |
504 | iterate_over_symtabs (name, [&] (symtab *symtab) |
505 | { | |
506 | result = symtab; | |
507 | return true; | |
508 | }); | |
509 | ||
f8eba3c6 TT |
510 | return result; |
511 | } | |
512 | ||
c906108c SS |
513 | \f |
514 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
515 | full method name, which consist of the class name (from T), the unadorned | |
516 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 517 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
518 | |
519 | char * | |
fba45db2 | 520 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
521 | { |
522 | int mangled_name_len; | |
523 | char *mangled_name; | |
524 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
525 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 526 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 527 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
0d5cff50 | 528 | const char *newname = type_name_no_tag (type); |
c906108c SS |
529 | |
530 | /* Does the form of physname indicate that it is the full mangled name | |
531 | of a constructor (not just the args)? */ | |
532 | int is_full_physname_constructor; | |
533 | ||
534 | int is_constructor; | |
015a42b4 | 535 | int is_destructor = is_destructor_name (physname); |
c906108c | 536 | /* Need a new type prefix. */ |
e6a959d6 PA |
537 | const char *const_prefix = method->is_const ? "C" : ""; |
538 | const char *volatile_prefix = method->is_volatile ? "V" : ""; | |
c906108c SS |
539 | char buf[20]; |
540 | int len = (newname == NULL ? 0 : strlen (newname)); | |
541 | ||
43630227 PS |
542 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
543 | or an operator name. */ | |
544 | if ((physname[0] == '_' && physname[1] == 'Z') | |
545 | || is_operator_name (field_name)) | |
235d1e03 EZ |
546 | return xstrdup (physname); |
547 | ||
015a42b4 | 548 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 549 | |
3e43a32a MS |
550 | is_constructor = is_full_physname_constructor |
551 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
552 | |
553 | if (!is_destructor) | |
61012eef | 554 | is_destructor = (startswith (physname, "__dt")); |
c906108c SS |
555 | |
556 | if (is_destructor || is_full_physname_constructor) | |
557 | { | |
c5aa993b JM |
558 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
559 | strcpy (mangled_name, physname); | |
c906108c SS |
560 | return mangled_name; |
561 | } | |
562 | ||
563 | if (len == 0) | |
564 | { | |
8c042590 | 565 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
566 | } |
567 | else if (physname[0] == 't' || physname[0] == 'Q') | |
568 | { | |
569 | /* The physname for template and qualified methods already includes | |
c5aa993b | 570 | the class name. */ |
8c042590 | 571 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
572 | newname = NULL; |
573 | len = 0; | |
574 | } | |
575 | else | |
576 | { | |
8c042590 PM |
577 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
578 | volatile_prefix, len); | |
c906108c SS |
579 | } |
580 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 581 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 582 | |
433759f7 MS |
583 | mangled_name = (char *) xmalloc (mangled_name_len); |
584 | if (is_constructor) | |
585 | mangled_name[0] = '\0'; | |
586 | else | |
587 | strcpy (mangled_name, field_name); | |
588 | ||
c906108c SS |
589 | strcat (mangled_name, buf); |
590 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
591 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 592 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
593 | if (newname != NULL) |
594 | strcat (mangled_name, newname); | |
595 | ||
596 | strcat (mangled_name, physname); | |
597 | return (mangled_name); | |
598 | } | |
12af6855 | 599 | |
b250c185 | 600 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 601 | correctly allocated. */ |
eca864fe | 602 | |
b250c185 SW |
603 | void |
604 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 605 | const char *name, |
ccde22c0 | 606 | struct obstack *obstack) |
b250c185 | 607 | { |
7c5fdd25 | 608 | if (gsymbol->language == language_ada) |
f85f34ed TT |
609 | { |
610 | if (name == NULL) | |
611 | { | |
612 | gsymbol->ada_mangled = 0; | |
613 | gsymbol->language_specific.obstack = obstack; | |
614 | } | |
615 | else | |
616 | { | |
617 | gsymbol->ada_mangled = 1; | |
615b3f62 | 618 | gsymbol->language_specific.demangled_name = name; |
f85f34ed TT |
619 | } |
620 | } | |
29df156d | 621 | else |
615b3f62 | 622 | gsymbol->language_specific.demangled_name = name; |
b250c185 SW |
623 | } |
624 | ||
625 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 626 | |
0d5cff50 | 627 | const char * |
b250c185 SW |
628 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
629 | { | |
7c5fdd25 | 630 | if (gsymbol->language == language_ada) |
f85f34ed TT |
631 | { |
632 | if (!gsymbol->ada_mangled) | |
633 | return NULL; | |
634 | /* Fall through. */ | |
635 | } | |
636 | ||
615b3f62 | 637 | return gsymbol->language_specific.demangled_name; |
b250c185 SW |
638 | } |
639 | ||
12af6855 | 640 | \f |
89aad1f9 | 641 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 642 | depending upon the language for the symbol. */ |
eca864fe | 643 | |
89aad1f9 | 644 | void |
33e5013e | 645 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
646 | enum language language, |
647 | struct obstack *obstack) | |
89aad1f9 EZ |
648 | { |
649 | gsymbol->language = language; | |
7c5fdd25 DE |
650 | if (gsymbol->language == language_cplus |
651 | || gsymbol->language == language_d | |
a766d390 | 652 | || gsymbol->language == language_go |
f55ee35c JK |
653 | || gsymbol->language == language_objc |
654 | || gsymbol->language == language_fortran) | |
89aad1f9 | 655 | { |
f85f34ed TT |
656 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
657 | } | |
658 | else if (gsymbol->language == language_ada) | |
659 | { | |
660 | gdb_assert (gsymbol->ada_mangled == 0); | |
661 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 662 | } |
89aad1f9 EZ |
663 | else |
664 | { | |
665 | memset (&gsymbol->language_specific, 0, | |
666 | sizeof (gsymbol->language_specific)); | |
667 | } | |
668 | } | |
669 | ||
2de7ced7 DJ |
670 | /* Functions to initialize a symbol's mangled name. */ |
671 | ||
04a679b8 TT |
672 | /* Objects of this type are stored in the demangled name hash table. */ |
673 | struct demangled_name_entry | |
674 | { | |
9d2ceabe | 675 | const char *mangled; |
04a679b8 TT |
676 | char demangled[1]; |
677 | }; | |
678 | ||
679 | /* Hash function for the demangled name hash. */ | |
eca864fe | 680 | |
04a679b8 TT |
681 | static hashval_t |
682 | hash_demangled_name_entry (const void *data) | |
683 | { | |
19ba03f4 SM |
684 | const struct demangled_name_entry *e |
685 | = (const struct demangled_name_entry *) data; | |
433759f7 | 686 | |
04a679b8 TT |
687 | return htab_hash_string (e->mangled); |
688 | } | |
689 | ||
690 | /* Equality function for the demangled name hash. */ | |
eca864fe | 691 | |
04a679b8 TT |
692 | static int |
693 | eq_demangled_name_entry (const void *a, const void *b) | |
694 | { | |
19ba03f4 SM |
695 | const struct demangled_name_entry *da |
696 | = (const struct demangled_name_entry *) a; | |
697 | const struct demangled_name_entry *db | |
698 | = (const struct demangled_name_entry *) b; | |
433759f7 | 699 | |
04a679b8 TT |
700 | return strcmp (da->mangled, db->mangled) == 0; |
701 | } | |
702 | ||
2de7ced7 DJ |
703 | /* Create the hash table used for demangled names. Each hash entry is |
704 | a pair of strings; one for the mangled name and one for the demangled | |
705 | name. The entry is hashed via just the mangled name. */ | |
706 | ||
707 | static void | |
708 | create_demangled_names_hash (struct objfile *objfile) | |
709 | { | |
710 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 711 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
712 | Choosing a much larger table size wastes memory, and saves only about |
713 | 1% in symbol reading. */ | |
714 | ||
84a1243b | 715 | objfile->per_bfd->demangled_names_hash = htab_create_alloc |
04a679b8 | 716 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 717 | NULL, xcalloc, xfree); |
2de7ced7 | 718 | } |
12af6855 | 719 | |
2de7ced7 | 720 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
721 | language of that symbol. If the language is set to language_auto, |
722 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
723 | then set the language appropriately. The returned name is allocated |
724 | by the demangler and should be xfree'd. */ | |
12af6855 | 725 | |
2de7ced7 DJ |
726 | static char * |
727 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
728 | const char *mangled) | |
12af6855 | 729 | { |
12af6855 | 730 | char *demangled = NULL; |
8b302db8 TT |
731 | int i; |
732 | int recognized; | |
12af6855 JB |
733 | |
734 | if (gsymbol->language == language_unknown) | |
735 | gsymbol->language = language_auto; | |
1bae87b9 | 736 | |
8b302db8 | 737 | if (gsymbol->language != language_auto) |
1bae87b9 | 738 | { |
8b302db8 TT |
739 | const struct language_defn *lang = language_def (gsymbol->language); |
740 | ||
741 | language_sniff_from_mangled_name (lang, mangled, &demangled); | |
742 | return demangled; | |
6aecb9c2 | 743 | } |
8b302db8 TT |
744 | |
745 | for (i = language_unknown; i < nr_languages; ++i) | |
a766d390 | 746 | { |
8b302db8 TT |
747 | enum language l = (enum language) i; |
748 | const struct language_defn *lang = language_def (l); | |
749 | ||
750 | if (language_sniff_from_mangled_name (lang, mangled, &demangled)) | |
a766d390 | 751 | { |
8b302db8 | 752 | gsymbol->language = l; |
a766d390 DE |
753 | return demangled; |
754 | } | |
755 | } | |
756 | ||
2de7ced7 DJ |
757 | return NULL; |
758 | } | |
759 | ||
980cae7a | 760 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
761 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
762 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
763 | NUL-terminated, then this function assumes that NAME is already | |
764 | correctly saved (either permanently or with a lifetime tied to the | |
765 | objfile), and it will not be copied. | |
766 | ||
767 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 768 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 769 | so the pointer can be discarded after calling this function. */ |
2de7ced7 DJ |
770 | |
771 | void | |
772 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
773 | const char *linkage_name, int len, int copy_name, |
774 | struct objfile *objfile) | |
2de7ced7 | 775 | { |
04a679b8 | 776 | struct demangled_name_entry **slot; |
980cae7a DC |
777 | /* A 0-terminated copy of the linkage name. */ |
778 | const char *linkage_name_copy; | |
04a679b8 | 779 | struct demangled_name_entry entry; |
84a1243b | 780 | struct objfile_per_bfd_storage *per_bfd = objfile->per_bfd; |
2de7ced7 | 781 | |
b06ead72 JB |
782 | if (gsymbol->language == language_ada) |
783 | { | |
784 | /* In Ada, we do the symbol lookups using the mangled name, so | |
9c37b5ae | 785 | we can save some space by not storing the demangled name. */ |
04a679b8 | 786 | if (!copy_name) |
0d5cff50 | 787 | gsymbol->name = linkage_name; |
04a679b8 TT |
788 | else |
789 | { | |
224c3ddb SM |
790 | char *name = (char *) obstack_alloc (&per_bfd->storage_obstack, |
791 | len + 1); | |
0d5cff50 DE |
792 | |
793 | memcpy (name, linkage_name, len); | |
794 | name[len] = '\0'; | |
795 | gsymbol->name = name; | |
04a679b8 | 796 | } |
84a1243b | 797 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
798 | |
799 | return; | |
800 | } | |
801 | ||
84a1243b | 802 | if (per_bfd->demangled_names_hash == NULL) |
04a679b8 TT |
803 | create_demangled_names_hash (objfile); |
804 | ||
9c37b5ae | 805 | if (linkage_name[len] != '\0') |
2de7ced7 | 806 | { |
980cae7a DC |
807 | char *alloc_name; |
808 | ||
9c37b5ae | 809 | alloc_name = (char *) alloca (len + 1); |
980cae7a | 810 | memcpy (alloc_name, linkage_name, len); |
9c37b5ae | 811 | alloc_name[len] = '\0'; |
980cae7a DC |
812 | |
813 | linkage_name_copy = alloc_name; | |
2de7ced7 DJ |
814 | } |
815 | else | |
9c37b5ae | 816 | linkage_name_copy = linkage_name; |
2de7ced7 | 817 | |
9c37b5ae | 818 | entry.mangled = linkage_name_copy; |
04a679b8 | 819 | slot = ((struct demangled_name_entry **) |
84a1243b | 820 | htab_find_slot (per_bfd->demangled_names_hash, |
04a679b8 | 821 | &entry, INSERT)); |
2de7ced7 DJ |
822 | |
823 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
824 | if (*slot == NULL |
825 | /* A C version of the symbol may have already snuck into the table. | |
826 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
827 | || (gsymbol->language == language_go | |
828 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 829 | { |
980cae7a DC |
830 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
831 | linkage_name_copy); | |
2de7ced7 DJ |
832 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
833 | ||
04a679b8 | 834 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
9c37b5ae | 835 | linkage_name_copy==linkage_name. In this case, we already have the |
04a679b8 TT |
836 | mangled name saved, and we don't have a demangled name. So, |
837 | you might think we could save a little space by not recording | |
838 | this in the hash table at all. | |
839 | ||
840 | It turns out that it is actually important to still save such | |
841 | an entry in the hash table, because storing this name gives | |
705b5767 | 842 | us better bcache hit rates for partial symbols. */ |
9c37b5ae | 843 | if (!copy_name && linkage_name_copy == linkage_name) |
04a679b8 | 844 | { |
224c3ddb SM |
845 | *slot |
846 | = ((struct demangled_name_entry *) | |
847 | obstack_alloc (&per_bfd->storage_obstack, | |
848 | offsetof (struct demangled_name_entry, demangled) | |
849 | + demangled_len + 1)); | |
9c37b5ae | 850 | (*slot)->mangled = linkage_name; |
04a679b8 TT |
851 | } |
852 | else | |
853 | { | |
9d2ceabe TT |
854 | char *mangled_ptr; |
855 | ||
04a679b8 TT |
856 | /* If we must copy the mangled name, put it directly after |
857 | the demangled name so we can have a single | |
858 | allocation. */ | |
224c3ddb SM |
859 | *slot |
860 | = ((struct demangled_name_entry *) | |
861 | obstack_alloc (&per_bfd->storage_obstack, | |
862 | offsetof (struct demangled_name_entry, demangled) | |
9c37b5ae | 863 | + len + demangled_len + 2)); |
9d2ceabe | 864 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
9c37b5ae | 865 | strcpy (mangled_ptr, linkage_name_copy); |
9d2ceabe | 866 | (*slot)->mangled = mangled_ptr; |
04a679b8 TT |
867 | } |
868 | ||
980cae7a | 869 | if (demangled_name != NULL) |
2de7ced7 | 870 | { |
04a679b8 | 871 | strcpy ((*slot)->demangled, demangled_name); |
2de7ced7 DJ |
872 | xfree (demangled_name); |
873 | } | |
874 | else | |
04a679b8 | 875 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
876 | } |
877 | ||
9c37b5ae | 878 | gsymbol->name = (*slot)->mangled; |
04a679b8 | 879 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 880 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 881 | &per_bfd->storage_obstack); |
2de7ced7 | 882 | else |
84a1243b | 883 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
884 | } |
885 | ||
22abf04a DC |
886 | /* Return the source code name of a symbol. In languages where |
887 | demangling is necessary, this is the demangled name. */ | |
888 | ||
0d5cff50 | 889 | const char * |
22abf04a DC |
890 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
891 | { | |
9af17804 | 892 | switch (gsymbol->language) |
22abf04a | 893 | { |
1f8173e6 | 894 | case language_cplus: |
6aecb9c2 | 895 | case language_d: |
a766d390 | 896 | case language_go: |
1f8173e6 | 897 | case language_objc: |
f55ee35c | 898 | case language_fortran: |
b250c185 SW |
899 | if (symbol_get_demangled_name (gsymbol) != NULL) |
900 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
901 | break; |
902 | case language_ada: | |
f85f34ed | 903 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
904 | default: |
905 | break; | |
22abf04a | 906 | } |
1f8173e6 | 907 | return gsymbol->name; |
22abf04a DC |
908 | } |
909 | ||
9cc0d196 | 910 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 911 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 912 | |
0d5cff50 | 913 | const char * |
df8a16a1 | 914 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 915 | { |
c6e5ee5e SDJ |
916 | const char *dem_name = NULL; |
917 | ||
9af17804 | 918 | switch (gsymbol->language) |
1f8173e6 PH |
919 | { |
920 | case language_cplus: | |
6aecb9c2 | 921 | case language_d: |
a766d390 | 922 | case language_go: |
1f8173e6 | 923 | case language_objc: |
f55ee35c | 924 | case language_fortran: |
c6e5ee5e | 925 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
926 | break; |
927 | case language_ada: | |
f85f34ed | 928 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
929 | break; |
930 | default: | |
931 | break; | |
932 | } | |
c6e5ee5e | 933 | return dem_name; |
9cc0d196 | 934 | } |
fe39c653 | 935 | |
4725b721 PH |
936 | /* Return the search name of a symbol---generally the demangled or |
937 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 938 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 939 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 940 | |
0d5cff50 | 941 | const char * |
fc062ac6 JB |
942 | symbol_search_name (const struct general_symbol_info *gsymbol) |
943 | { | |
1f8173e6 PH |
944 | if (gsymbol->language == language_ada) |
945 | return gsymbol->name; | |
946 | else | |
947 | return symbol_natural_name (gsymbol); | |
4725b721 | 948 | } |
c906108c SS |
949 | \f |
950 | ||
94277a38 DJ |
951 | /* Return 1 if the two sections are the same, or if they could |
952 | plausibly be copies of each other, one in an original object | |
953 | file and another in a separated debug file. */ | |
954 | ||
955 | int | |
714835d5 UW |
956 | matching_obj_sections (struct obj_section *obj_first, |
957 | struct obj_section *obj_second) | |
94277a38 | 958 | { |
714835d5 UW |
959 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
960 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
961 | struct objfile *obj; |
962 | ||
963 | /* If they're the same section, then they match. */ | |
964 | if (first == second) | |
965 | return 1; | |
966 | ||
967 | /* If either is NULL, give up. */ | |
968 | if (first == NULL || second == NULL) | |
969 | return 0; | |
970 | ||
971 | /* This doesn't apply to absolute symbols. */ | |
972 | if (first->owner == NULL || second->owner == NULL) | |
973 | return 0; | |
974 | ||
975 | /* If they're in the same object file, they must be different sections. */ | |
976 | if (first->owner == second->owner) | |
977 | return 0; | |
978 | ||
979 | /* Check whether the two sections are potentially corresponding. They must | |
980 | have the same size, address, and name. We can't compare section indexes, | |
981 | which would be more reliable, because some sections may have been | |
982 | stripped. */ | |
983 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
984 | return 0; | |
985 | ||
818f79f6 | 986 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 987 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
988 | - bfd_get_start_address (first->owner) |
989 | != bfd_get_section_vma (second->owner, second) | |
990 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
991 | return 0; |
992 | ||
993 | if (bfd_get_section_name (first->owner, first) == NULL | |
994 | || bfd_get_section_name (second->owner, second) == NULL | |
995 | || strcmp (bfd_get_section_name (first->owner, first), | |
996 | bfd_get_section_name (second->owner, second)) != 0) | |
997 | return 0; | |
998 | ||
999 | /* Otherwise check that they are in corresponding objfiles. */ | |
1000 | ||
1001 | ALL_OBJFILES (obj) | |
1002 | if (obj->obfd == first->owner) | |
1003 | break; | |
1004 | gdb_assert (obj != NULL); | |
1005 | ||
1006 | if (obj->separate_debug_objfile != NULL | |
1007 | && obj->separate_debug_objfile->obfd == second->owner) | |
1008 | return 1; | |
1009 | if (obj->separate_debug_objfile_backlink != NULL | |
1010 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1011 | return 1; | |
1012 | ||
1013 | return 0; | |
1014 | } | |
c5aa993b | 1015 | |
2097ae25 DE |
1016 | /* See symtab.h. */ |
1017 | ||
1018 | void | |
1019 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1020 | { |
52f0bd74 | 1021 | struct objfile *objfile; |
77e371c0 | 1022 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1023 | |
1024 | /* If we know that this is not a text address, return failure. This is | |
1025 | necessary because we loop based on texthigh and textlow, which do | |
1026 | not include the data ranges. */ | |
77e371c0 TT |
1027 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1028 | if (msymbol.minsym | |
1029 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
1030 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
1031 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
1032 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
1033 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
2097ae25 | 1034 | return; |
c906108c | 1035 | |
ff013f42 | 1036 | ALL_OBJFILES (objfile) |
ccefe4c4 | 1037 | { |
43f3e411 | 1038 | struct compunit_symtab *cust = NULL; |
433759f7 | 1039 | |
ccefe4c4 | 1040 | if (objfile->sf) |
43f3e411 DE |
1041 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, |
1042 | pc, section, 0); | |
1043 | if (cust) | |
2097ae25 | 1044 | return; |
ccefe4c4 | 1045 | } |
c906108c | 1046 | } |
c906108c | 1047 | \f |
f57d2163 DE |
1048 | /* Hash function for the symbol cache. */ |
1049 | ||
1050 | static unsigned int | |
1051 | hash_symbol_entry (const struct objfile *objfile_context, | |
1052 | const char *name, domain_enum domain) | |
1053 | { | |
1054 | unsigned int hash = (uintptr_t) objfile_context; | |
1055 | ||
1056 | if (name != NULL) | |
1057 | hash += htab_hash_string (name); | |
1058 | ||
2c26b84f DE |
1059 | /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN |
1060 | to map to the same slot. */ | |
1061 | if (domain == STRUCT_DOMAIN) | |
1062 | hash += VAR_DOMAIN * 7; | |
1063 | else | |
1064 | hash += domain * 7; | |
f57d2163 DE |
1065 | |
1066 | return hash; | |
1067 | } | |
1068 | ||
1069 | /* Equality function for the symbol cache. */ | |
1070 | ||
1071 | static int | |
1072 | eq_symbol_entry (const struct symbol_cache_slot *slot, | |
1073 | const struct objfile *objfile_context, | |
1074 | const char *name, domain_enum domain) | |
1075 | { | |
1076 | const char *slot_name; | |
1077 | domain_enum slot_domain; | |
1078 | ||
1079 | if (slot->state == SYMBOL_SLOT_UNUSED) | |
1080 | return 0; | |
1081 | ||
1082 | if (slot->objfile_context != objfile_context) | |
1083 | return 0; | |
1084 | ||
1085 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1086 | { | |
1087 | slot_name = slot->value.not_found.name; | |
1088 | slot_domain = slot->value.not_found.domain; | |
1089 | } | |
1090 | else | |
1091 | { | |
d12307c1 PMR |
1092 | slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol); |
1093 | slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol); | |
f57d2163 DE |
1094 | } |
1095 | ||
1096 | /* NULL names match. */ | |
1097 | if (slot_name == NULL && name == NULL) | |
1098 | { | |
1099 | /* But there's no point in calling symbol_matches_domain in the | |
1100 | SYMBOL_SLOT_FOUND case. */ | |
1101 | if (slot_domain != domain) | |
1102 | return 0; | |
1103 | } | |
1104 | else if (slot_name != NULL && name != NULL) | |
1105 | { | |
1106 | /* It's important that we use the same comparison that was done the | |
1107 | first time through. If the slot records a found symbol, then this | |
1108 | means using strcmp_iw on SYMBOL_SEARCH_NAME. See dictionary.c. | |
1109 | It also means using symbol_matches_domain for found symbols. | |
1110 | See block.c. | |
1111 | ||
1112 | If the slot records a not-found symbol, then require a precise match. | |
1113 | We could still be lax with whitespace like strcmp_iw though. */ | |
1114 | ||
1115 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1116 | { | |
1117 | if (strcmp (slot_name, name) != 0) | |
1118 | return 0; | |
1119 | if (slot_domain != domain) | |
1120 | return 0; | |
1121 | } | |
1122 | else | |
1123 | { | |
d12307c1 | 1124 | struct symbol *sym = slot->value.found.symbol; |
f57d2163 DE |
1125 | |
1126 | if (strcmp_iw (slot_name, name) != 0) | |
1127 | return 0; | |
1128 | if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym), | |
1129 | slot_domain, domain)) | |
1130 | return 0; | |
1131 | } | |
1132 | } | |
1133 | else | |
1134 | { | |
1135 | /* Only one name is NULL. */ | |
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | return 1; | |
1140 | } | |
1141 | ||
1142 | /* Given a cache of size SIZE, return the size of the struct (with variable | |
1143 | length array) in bytes. */ | |
1144 | ||
1145 | static size_t | |
1146 | symbol_cache_byte_size (unsigned int size) | |
1147 | { | |
1148 | return (sizeof (struct block_symbol_cache) | |
1149 | + ((size - 1) * sizeof (struct symbol_cache_slot))); | |
1150 | } | |
1151 | ||
1152 | /* Resize CACHE. */ | |
1153 | ||
1154 | static void | |
1155 | resize_symbol_cache (struct symbol_cache *cache, unsigned int new_size) | |
1156 | { | |
1157 | /* If there's no change in size, don't do anything. | |
1158 | All caches have the same size, so we can just compare with the size | |
1159 | of the global symbols cache. */ | |
1160 | if ((cache->global_symbols != NULL | |
1161 | && cache->global_symbols->size == new_size) | |
1162 | || (cache->global_symbols == NULL | |
1163 | && new_size == 0)) | |
1164 | return; | |
1165 | ||
1166 | xfree (cache->global_symbols); | |
1167 | xfree (cache->static_symbols); | |
1168 | ||
1169 | if (new_size == 0) | |
1170 | { | |
1171 | cache->global_symbols = NULL; | |
1172 | cache->static_symbols = NULL; | |
1173 | } | |
1174 | else | |
1175 | { | |
1176 | size_t total_size = symbol_cache_byte_size (new_size); | |
1177 | ||
224c3ddb SM |
1178 | cache->global_symbols |
1179 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
1180 | cache->static_symbols | |
1181 | = (struct block_symbol_cache *) xcalloc (1, total_size); | |
f57d2163 DE |
1182 | cache->global_symbols->size = new_size; |
1183 | cache->static_symbols->size = new_size; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* Make a symbol cache of size SIZE. */ | |
1188 | ||
1189 | static struct symbol_cache * | |
1190 | make_symbol_cache (unsigned int size) | |
1191 | { | |
1192 | struct symbol_cache *cache; | |
1193 | ||
1194 | cache = XCNEW (struct symbol_cache); | |
1195 | resize_symbol_cache (cache, symbol_cache_size); | |
1196 | return cache; | |
1197 | } | |
1198 | ||
1199 | /* Free the space used by CACHE. */ | |
1200 | ||
1201 | static void | |
1202 | free_symbol_cache (struct symbol_cache *cache) | |
1203 | { | |
1204 | xfree (cache->global_symbols); | |
1205 | xfree (cache->static_symbols); | |
1206 | xfree (cache); | |
1207 | } | |
1208 | ||
1209 | /* Return the symbol cache of PSPACE. | |
1210 | Create one if it doesn't exist yet. */ | |
1211 | ||
1212 | static struct symbol_cache * | |
1213 | get_symbol_cache (struct program_space *pspace) | |
1214 | { | |
19ba03f4 SM |
1215 | struct symbol_cache *cache |
1216 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1217 | |
1218 | if (cache == NULL) | |
1219 | { | |
1220 | cache = make_symbol_cache (symbol_cache_size); | |
1221 | set_program_space_data (pspace, symbol_cache_key, cache); | |
1222 | } | |
1223 | ||
1224 | return cache; | |
1225 | } | |
1226 | ||
1227 | /* Delete the symbol cache of PSPACE. | |
1228 | Called when PSPACE is destroyed. */ | |
1229 | ||
1230 | static void | |
1231 | symbol_cache_cleanup (struct program_space *pspace, void *data) | |
1232 | { | |
19ba03f4 | 1233 | struct symbol_cache *cache = (struct symbol_cache *) data; |
f57d2163 DE |
1234 | |
1235 | free_symbol_cache (cache); | |
1236 | } | |
1237 | ||
1238 | /* Set the size of the symbol cache in all program spaces. */ | |
1239 | ||
1240 | static void | |
1241 | set_symbol_cache_size (unsigned int new_size) | |
1242 | { | |
1243 | struct program_space *pspace; | |
1244 | ||
1245 | ALL_PSPACES (pspace) | |
1246 | { | |
1247 | struct symbol_cache *cache | |
19ba03f4 | 1248 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); |
f57d2163 DE |
1249 | |
1250 | /* The pspace could have been created but not have a cache yet. */ | |
1251 | if (cache != NULL) | |
1252 | resize_symbol_cache (cache, new_size); | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | /* Called when symbol-cache-size is set. */ | |
1257 | ||
1258 | static void | |
1259 | set_symbol_cache_size_handler (char *args, int from_tty, | |
1260 | struct cmd_list_element *c) | |
1261 | { | |
1262 | if (new_symbol_cache_size > MAX_SYMBOL_CACHE_SIZE) | |
1263 | { | |
1264 | /* Restore the previous value. | |
1265 | This is the value the "show" command prints. */ | |
1266 | new_symbol_cache_size = symbol_cache_size; | |
1267 | ||
1268 | error (_("Symbol cache size is too large, max is %u."), | |
1269 | MAX_SYMBOL_CACHE_SIZE); | |
1270 | } | |
1271 | symbol_cache_size = new_symbol_cache_size; | |
1272 | ||
1273 | set_symbol_cache_size (symbol_cache_size); | |
1274 | } | |
1275 | ||
1276 | /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE. | |
1277 | OBJFILE_CONTEXT is the current objfile, which may be NULL. | |
1278 | The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup | |
1279 | failed (and thus this one will too), or NULL if the symbol is not present | |
1280 | in the cache. | |
2c26b84f DE |
1281 | If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are |
1282 | set to the cache and slot of the symbol to save the result of a full lookup | |
1283 | attempt. */ | |
f57d2163 | 1284 | |
d12307c1 | 1285 | static struct block_symbol |
f57d2163 DE |
1286 | symbol_cache_lookup (struct symbol_cache *cache, |
1287 | struct objfile *objfile_context, int block, | |
1288 | const char *name, domain_enum domain, | |
1289 | struct block_symbol_cache **bsc_ptr, | |
1290 | struct symbol_cache_slot **slot_ptr) | |
1291 | { | |
1292 | struct block_symbol_cache *bsc; | |
1293 | unsigned int hash; | |
1294 | struct symbol_cache_slot *slot; | |
1295 | ||
1296 | if (block == GLOBAL_BLOCK) | |
1297 | bsc = cache->global_symbols; | |
1298 | else | |
1299 | bsc = cache->static_symbols; | |
1300 | if (bsc == NULL) | |
1301 | { | |
1302 | *bsc_ptr = NULL; | |
1303 | *slot_ptr = NULL; | |
d12307c1 | 1304 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1305 | } |
1306 | ||
1307 | hash = hash_symbol_entry (objfile_context, name, domain); | |
1308 | slot = bsc->symbols + hash % bsc->size; | |
f57d2163 DE |
1309 | |
1310 | if (eq_symbol_entry (slot, objfile_context, name, domain)) | |
1311 | { | |
1312 | if (symbol_lookup_debug) | |
1313 | fprintf_unfiltered (gdb_stdlog, | |
1314 | "%s block symbol cache hit%s for %s, %s\n", | |
1315 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1316 | slot->state == SYMBOL_SLOT_NOT_FOUND | |
1317 | ? " (not found)" : "", | |
1318 | name, domain_name (domain)); | |
1319 | ++bsc->hits; | |
1320 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1321 | return SYMBOL_LOOKUP_FAILED; | |
1322 | return slot->value.found; | |
1323 | } | |
1324 | ||
2c26b84f DE |
1325 | /* Symbol is not present in the cache. */ |
1326 | ||
1327 | *bsc_ptr = bsc; | |
1328 | *slot_ptr = slot; | |
1329 | ||
f57d2163 DE |
1330 | if (symbol_lookup_debug) |
1331 | { | |
1332 | fprintf_unfiltered (gdb_stdlog, | |
1333 | "%s block symbol cache miss for %s, %s\n", | |
1334 | block == GLOBAL_BLOCK ? "Global" : "Static", | |
1335 | name, domain_name (domain)); | |
1336 | } | |
1337 | ++bsc->misses; | |
d12307c1 | 1338 | return (struct block_symbol) {NULL, NULL}; |
f57d2163 DE |
1339 | } |
1340 | ||
1341 | /* Clear out SLOT. */ | |
1342 | ||
1343 | static void | |
1344 | symbol_cache_clear_slot (struct symbol_cache_slot *slot) | |
1345 | { | |
1346 | if (slot->state == SYMBOL_SLOT_NOT_FOUND) | |
1347 | xfree (slot->value.not_found.name); | |
1348 | slot->state = SYMBOL_SLOT_UNUSED; | |
1349 | } | |
1350 | ||
1351 | /* Mark SYMBOL as found in SLOT. | |
1352 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1353 | if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not* | |
1354 | necessarily the objfile the symbol was found in. */ | |
1355 | ||
1356 | static void | |
1357 | symbol_cache_mark_found (struct block_symbol_cache *bsc, | |
1358 | struct symbol_cache_slot *slot, | |
1359 | struct objfile *objfile_context, | |
d12307c1 PMR |
1360 | struct symbol *symbol, |
1361 | const struct block *block) | |
f57d2163 DE |
1362 | { |
1363 | if (bsc == NULL) | |
1364 | return; | |
1365 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1366 | { | |
1367 | ++bsc->collisions; | |
1368 | symbol_cache_clear_slot (slot); | |
1369 | } | |
1370 | slot->state = SYMBOL_SLOT_FOUND; | |
1371 | slot->objfile_context = objfile_context; | |
d12307c1 PMR |
1372 | slot->value.found.symbol = symbol; |
1373 | slot->value.found.block = block; | |
f57d2163 DE |
1374 | } |
1375 | ||
1376 | /* Mark symbol NAME, DOMAIN as not found in SLOT. | |
1377 | OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL | |
1378 | if it's not needed to distinguish lookups (STATIC_BLOCK). */ | |
1379 | ||
1380 | static void | |
1381 | symbol_cache_mark_not_found (struct block_symbol_cache *bsc, | |
1382 | struct symbol_cache_slot *slot, | |
1383 | struct objfile *objfile_context, | |
1384 | const char *name, domain_enum domain) | |
1385 | { | |
1386 | if (bsc == NULL) | |
1387 | return; | |
1388 | if (slot->state != SYMBOL_SLOT_UNUSED) | |
1389 | { | |
1390 | ++bsc->collisions; | |
1391 | symbol_cache_clear_slot (slot); | |
1392 | } | |
1393 | slot->state = SYMBOL_SLOT_NOT_FOUND; | |
1394 | slot->objfile_context = objfile_context; | |
1395 | slot->value.not_found.name = xstrdup (name); | |
1396 | slot->value.not_found.domain = domain; | |
1397 | } | |
1398 | ||
1399 | /* Flush the symbol cache of PSPACE. */ | |
1400 | ||
1401 | static void | |
1402 | symbol_cache_flush (struct program_space *pspace) | |
1403 | { | |
19ba03f4 SM |
1404 | struct symbol_cache *cache |
1405 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 | 1406 | int pass; |
f57d2163 DE |
1407 | |
1408 | if (cache == NULL) | |
1409 | return; | |
1410 | if (cache->global_symbols == NULL) | |
1411 | { | |
1412 | gdb_assert (symbol_cache_size == 0); | |
1413 | gdb_assert (cache->static_symbols == NULL); | |
1414 | return; | |
1415 | } | |
1416 | ||
1417 | /* If the cache is untouched since the last flush, early exit. | |
1418 | This is important for performance during the startup of a program linked | |
1419 | with 100s (or 1000s) of shared libraries. */ | |
1420 | if (cache->global_symbols->misses == 0 | |
1421 | && cache->static_symbols->misses == 0) | |
1422 | return; | |
1423 | ||
1424 | gdb_assert (cache->global_symbols->size == symbol_cache_size); | |
1425 | gdb_assert (cache->static_symbols->size == symbol_cache_size); | |
1426 | ||
1427 | for (pass = 0; pass < 2; ++pass) | |
1428 | { | |
1429 | struct block_symbol_cache *bsc | |
1430 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1431 | unsigned int i; | |
1432 | ||
1433 | for (i = 0; i < bsc->size; ++i) | |
1434 | symbol_cache_clear_slot (&bsc->symbols[i]); | |
1435 | } | |
1436 | ||
1437 | cache->global_symbols->hits = 0; | |
1438 | cache->global_symbols->misses = 0; | |
1439 | cache->global_symbols->collisions = 0; | |
1440 | cache->static_symbols->hits = 0; | |
1441 | cache->static_symbols->misses = 0; | |
1442 | cache->static_symbols->collisions = 0; | |
1443 | } | |
1444 | ||
1445 | /* Dump CACHE. */ | |
1446 | ||
1447 | static void | |
1448 | symbol_cache_dump (const struct symbol_cache *cache) | |
1449 | { | |
1450 | int pass; | |
1451 | ||
1452 | if (cache->global_symbols == NULL) | |
1453 | { | |
1454 | printf_filtered (" <disabled>\n"); | |
1455 | return; | |
1456 | } | |
1457 | ||
1458 | for (pass = 0; pass < 2; ++pass) | |
1459 | { | |
1460 | const struct block_symbol_cache *bsc | |
1461 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1462 | unsigned int i; | |
1463 | ||
1464 | if (pass == 0) | |
1465 | printf_filtered ("Global symbols:\n"); | |
1466 | else | |
1467 | printf_filtered ("Static symbols:\n"); | |
1468 | ||
1469 | for (i = 0; i < bsc->size; ++i) | |
1470 | { | |
1471 | const struct symbol_cache_slot *slot = &bsc->symbols[i]; | |
1472 | ||
1473 | QUIT; | |
1474 | ||
1475 | switch (slot->state) | |
1476 | { | |
1477 | case SYMBOL_SLOT_UNUSED: | |
1478 | break; | |
1479 | case SYMBOL_SLOT_NOT_FOUND: | |
2c26b84f | 1480 | printf_filtered (" [%4u] = %s, %s %s (not found)\n", i, |
f57d2163 | 1481 | host_address_to_string (slot->objfile_context), |
2c26b84f DE |
1482 | slot->value.not_found.name, |
1483 | domain_name (slot->value.not_found.domain)); | |
f57d2163 DE |
1484 | break; |
1485 | case SYMBOL_SLOT_FOUND: | |
d12307c1 PMR |
1486 | { |
1487 | struct symbol *found = slot->value.found.symbol; | |
1488 | const struct objfile *context = slot->objfile_context; | |
1489 | ||
1490 | printf_filtered (" [%4u] = %s, %s %s\n", i, | |
1491 | host_address_to_string (context), | |
1492 | SYMBOL_PRINT_NAME (found), | |
1493 | domain_name (SYMBOL_DOMAIN (found))); | |
1494 | break; | |
1495 | } | |
f57d2163 DE |
1496 | } |
1497 | } | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | /* The "mt print symbol-cache" command. */ | |
1502 | ||
1503 | static void | |
510e5e56 | 1504 | maintenance_print_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1505 | { |
1506 | struct program_space *pspace; | |
1507 | ||
1508 | ALL_PSPACES (pspace) | |
1509 | { | |
1510 | struct symbol_cache *cache; | |
1511 | ||
1512 | printf_filtered (_("Symbol cache for pspace %d\n%s:\n"), | |
1513 | pspace->num, | |
1514 | pspace->symfile_object_file != NULL | |
1515 | ? objfile_name (pspace->symfile_object_file) | |
1516 | : "(no object file)"); | |
1517 | ||
1518 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1519 | cache |
1520 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1521 | if (cache == NULL) |
1522 | printf_filtered (" <empty>\n"); | |
1523 | else | |
1524 | symbol_cache_dump (cache); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | /* The "mt flush-symbol-cache" command. */ | |
1529 | ||
1530 | static void | |
510e5e56 | 1531 | maintenance_flush_symbol_cache (const char *args, int from_tty) |
f57d2163 DE |
1532 | { |
1533 | struct program_space *pspace; | |
1534 | ||
1535 | ALL_PSPACES (pspace) | |
1536 | { | |
1537 | symbol_cache_flush (pspace); | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | /* Print usage statistics of CACHE. */ | |
1542 | ||
1543 | static void | |
1544 | symbol_cache_stats (struct symbol_cache *cache) | |
1545 | { | |
1546 | int pass; | |
1547 | ||
1548 | if (cache->global_symbols == NULL) | |
1549 | { | |
1550 | printf_filtered (" <disabled>\n"); | |
1551 | return; | |
1552 | } | |
1553 | ||
1554 | for (pass = 0; pass < 2; ++pass) | |
1555 | { | |
1556 | const struct block_symbol_cache *bsc | |
1557 | = pass == 0 ? cache->global_symbols : cache->static_symbols; | |
1558 | ||
1559 | QUIT; | |
1560 | ||
1561 | if (pass == 0) | |
1562 | printf_filtered ("Global block cache stats:\n"); | |
1563 | else | |
1564 | printf_filtered ("Static block cache stats:\n"); | |
1565 | ||
1566 | printf_filtered (" size: %u\n", bsc->size); | |
1567 | printf_filtered (" hits: %u\n", bsc->hits); | |
1568 | printf_filtered (" misses: %u\n", bsc->misses); | |
1569 | printf_filtered (" collisions: %u\n", bsc->collisions); | |
1570 | } | |
1571 | } | |
1572 | ||
1573 | /* The "mt print symbol-cache-statistics" command. */ | |
1574 | ||
1575 | static void | |
510e5e56 | 1576 | maintenance_print_symbol_cache_statistics (const char *args, int from_tty) |
f57d2163 DE |
1577 | { |
1578 | struct program_space *pspace; | |
1579 | ||
1580 | ALL_PSPACES (pspace) | |
1581 | { | |
1582 | struct symbol_cache *cache; | |
1583 | ||
1584 | printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"), | |
1585 | pspace->num, | |
1586 | pspace->symfile_object_file != NULL | |
1587 | ? objfile_name (pspace->symfile_object_file) | |
1588 | : "(no object file)"); | |
1589 | ||
1590 | /* If the cache hasn't been created yet, avoid creating one. */ | |
19ba03f4 SM |
1591 | cache |
1592 | = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key); | |
f57d2163 DE |
1593 | if (cache == NULL) |
1594 | printf_filtered (" empty, no stats available\n"); | |
1595 | else | |
1596 | symbol_cache_stats (cache); | |
1597 | } | |
1598 | } | |
1599 | ||
1600 | /* This module's 'new_objfile' observer. */ | |
1601 | ||
1602 | static void | |
1603 | symtab_new_objfile_observer (struct objfile *objfile) | |
1604 | { | |
1605 | /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */ | |
1606 | symbol_cache_flush (current_program_space); | |
1607 | } | |
1608 | ||
1609 | /* This module's 'free_objfile' observer. */ | |
1610 | ||
1611 | static void | |
1612 | symtab_free_objfile_observer (struct objfile *objfile) | |
1613 | { | |
1614 | symbol_cache_flush (objfile->pspace); | |
1615 | } | |
1616 | \f | |
c906108c SS |
1617 | /* Debug symbols usually don't have section information. We need to dig that |
1618 | out of the minimal symbols and stash that in the debug symbol. */ | |
1619 | ||
ccefe4c4 | 1620 | void |
907fc202 UW |
1621 | fixup_section (struct general_symbol_info *ginfo, |
1622 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1623 | { |
1624 | struct minimal_symbol *msym; | |
c906108c | 1625 | |
bccdca4a UW |
1626 | /* First, check whether a minimal symbol with the same name exists |
1627 | and points to the same address. The address check is required | |
1628 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1629 | point to the function descriptor, while the debug symbol will | |
1630 | point to the actual function code. */ | |
907fc202 UW |
1631 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1632 | if (msym) | |
efd66ac6 | 1633 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1634 | else |
19e2d14b KB |
1635 | { |
1636 | /* Static, function-local variables do appear in the linker | |
1637 | (minimal) symbols, but are frequently given names that won't | |
1638 | be found via lookup_minimal_symbol(). E.g., it has been | |
1639 | observed in frv-uclinux (ELF) executables that a static, | |
1640 | function-local variable named "foo" might appear in the | |
1641 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1642 | point in attempting to extend the lookup-by-name mechanism to | |
1643 | handle this case due to the fact that there can be multiple | |
1644 | names. | |
9af17804 | 1645 | |
19e2d14b KB |
1646 | So, instead, search the section table when lookup by name has |
1647 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1648 | been relocated. If so, the relocation offset (i.e. the | |
1649 | ANOFFSET value) needs to be subtracted from these values when | |
1650 | performing the comparison. We unconditionally subtract it, | |
1651 | because, when no relocation has been performed, the ANOFFSET | |
1652 | value will simply be zero. | |
9af17804 | 1653 | |
19e2d14b KB |
1654 | The address of the symbol whose section we're fixing up HAS |
1655 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1656 | the section isn't yet known and knowing the section is | |
1657 | necessary in order to add the correct relocation value. In | |
1658 | other words, we wouldn't even be in this function (attempting | |
1659 | to compute the section) if it were already known. | |
1660 | ||
1661 | Note that it is possible to search the minimal symbols | |
1662 | (subtracting the relocation value if necessary) to find the | |
1663 | matching minimal symbol, but this is overkill and much less | |
1664 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1665 | symbol, only its section. |
1666 | ||
19e2d14b KB |
1667 | Note that this technique (of doing a section table search) |
1668 | can fail when unrelocated section addresses overlap. For | |
1669 | this reason, we still attempt a lookup by name prior to doing | |
1670 | a search of the section table. */ | |
9af17804 | 1671 | |
19e2d14b | 1672 | struct obj_section *s; |
e27d198c | 1673 | int fallback = -1; |
433759f7 | 1674 | |
19e2d14b KB |
1675 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1676 | { | |
65cf3563 | 1677 | int idx = s - objfile->sections; |
19e2d14b KB |
1678 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1679 | ||
e27d198c TT |
1680 | if (fallback == -1) |
1681 | fallback = idx; | |
1682 | ||
f1f6aadf PA |
1683 | if (obj_section_addr (s) - offset <= addr |
1684 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1685 | { |
19e2d14b KB |
1686 | ginfo->section = idx; |
1687 | return; | |
1688 | } | |
1689 | } | |
e27d198c TT |
1690 | |
1691 | /* If we didn't find the section, assume it is in the first | |
1692 | section. If there is no allocated section, then it hardly | |
1693 | matters what we pick, so just pick zero. */ | |
1694 | if (fallback == -1) | |
1695 | ginfo->section = 0; | |
1696 | else | |
1697 | ginfo->section = fallback; | |
19e2d14b | 1698 | } |
c906108c SS |
1699 | } |
1700 | ||
1701 | struct symbol * | |
fba45db2 | 1702 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1703 | { |
907fc202 UW |
1704 | CORE_ADDR addr; |
1705 | ||
c906108c SS |
1706 | if (!sym) |
1707 | return NULL; | |
1708 | ||
1994afbf DE |
1709 | if (!SYMBOL_OBJFILE_OWNED (sym)) |
1710 | return sym; | |
1711 | ||
907fc202 UW |
1712 | /* We either have an OBJFILE, or we can get at it from the sym's |
1713 | symtab. Anything else is a bug. */ | |
08be3fe3 | 1714 | gdb_assert (objfile || symbol_symtab (sym)); |
907fc202 UW |
1715 | |
1716 | if (objfile == NULL) | |
08be3fe3 | 1717 | objfile = symbol_objfile (sym); |
907fc202 | 1718 | |
e27d198c TT |
1719 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1720 | return sym; | |
1721 | ||
907fc202 UW |
1722 | /* We should have an objfile by now. */ |
1723 | gdb_assert (objfile); | |
1724 | ||
1725 | switch (SYMBOL_CLASS (sym)) | |
1726 | { | |
1727 | case LOC_STATIC: | |
1728 | case LOC_LABEL: | |
907fc202 UW |
1729 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1730 | break; | |
1731 | case LOC_BLOCK: | |
1732 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1733 | break; | |
1734 | ||
1735 | default: | |
1736 | /* Nothing else will be listed in the minsyms -- no use looking | |
1737 | it up. */ | |
1738 | return sym; | |
1739 | } | |
1740 | ||
1741 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1742 | |
1743 | return sym; | |
1744 | } | |
1745 | ||
f8eba3c6 | 1746 | /* Compute the demangled form of NAME as used by the various symbol |
2f408ecb PA |
1747 | lookup functions. The result can either be the input NAME |
1748 | directly, or a pointer to a buffer owned by the STORAGE object. | |
f8eba3c6 | 1749 | |
2f408ecb | 1750 | For Ada, this function just returns NAME, unmodified. |
f8eba3c6 TT |
1751 | Normally, Ada symbol lookups are performed using the encoded name |
1752 | rather than the demangled name, and so it might seem to make sense | |
1753 | for this function to return an encoded version of NAME. | |
1754 | Unfortunately, we cannot do this, because this function is used in | |
1755 | circumstances where it is not appropriate to try to encode NAME. | |
1756 | For instance, when displaying the frame info, we demangle the name | |
1757 | of each parameter, and then perform a symbol lookup inside our | |
1758 | function using that demangled name. In Ada, certain functions | |
1759 | have internally-generated parameters whose name contain uppercase | |
1760 | characters. Encoding those name would result in those uppercase | |
1761 | characters to become lowercase, and thus cause the symbol lookup | |
1762 | to fail. */ | |
c906108c | 1763 | |
2f408ecb | 1764 | const char * |
f8eba3c6 | 1765 | demangle_for_lookup (const char *name, enum language lang, |
2f408ecb | 1766 | demangle_result_storage &storage) |
c906108c | 1767 | { |
9c37b5ae | 1768 | /* If we are using C++, D, or Go, demangle the name before doing a |
c378eb4e | 1769 | lookup, so we can always binary search. */ |
53c5240f | 1770 | if (lang == language_cplus) |
729051e6 | 1771 | { |
2f408ecb PA |
1772 | char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
1773 | if (demangled_name != NULL) | |
1774 | return storage.set_malloc_ptr (demangled_name); | |
1775 | ||
1776 | /* If we were given a non-mangled name, canonicalize it | |
1777 | according to the language (so far only for C++). */ | |
1778 | std::string canon = cp_canonicalize_string (name); | |
1779 | if (!canon.empty ()) | |
1780 | return storage.swap_string (canon); | |
729051e6 | 1781 | } |
6aecb9c2 JB |
1782 | else if (lang == language_d) |
1783 | { | |
2f408ecb PA |
1784 | char *demangled_name = d_demangle (name, 0); |
1785 | if (demangled_name != NULL) | |
1786 | return storage.set_malloc_ptr (demangled_name); | |
6aecb9c2 | 1787 | } |
a766d390 DE |
1788 | else if (lang == language_go) |
1789 | { | |
2f408ecb PA |
1790 | char *demangled_name = go_demangle (name, 0); |
1791 | if (demangled_name != NULL) | |
1792 | return storage.set_malloc_ptr (demangled_name); | |
a766d390 | 1793 | } |
729051e6 | 1794 | |
2f408ecb | 1795 | return name; |
f8eba3c6 TT |
1796 | } |
1797 | ||
cf901d3b | 1798 | /* See symtab.h. |
f8eba3c6 | 1799 | |
cf901d3b | 1800 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1801 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1802 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1803 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1804 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1805 | that there is C++ code below which can error(), but that probably |
1806 | doesn't affect these calls since they are looking for a known | |
1807 | variable and thus can probably assume it will never hit the C++ | |
1808 | code). */ | |
1809 | ||
d12307c1 | 1810 | struct block_symbol |
f8eba3c6 TT |
1811 | lookup_symbol_in_language (const char *name, const struct block *block, |
1812 | const domain_enum domain, enum language lang, | |
1993b719 | 1813 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 | 1814 | { |
2f408ecb PA |
1815 | demangle_result_storage storage; |
1816 | const char *modified_name = demangle_for_lookup (name, lang, storage); | |
f8eba3c6 | 1817 | |
2f408ecb PA |
1818 | return lookup_symbol_aux (modified_name, block, domain, lang, |
1819 | is_a_field_of_this); | |
fba7f19c EZ |
1820 | } |
1821 | ||
cf901d3b | 1822 | /* See symtab.h. */ |
53c5240f | 1823 | |
d12307c1 | 1824 | struct block_symbol |
53c5240f | 1825 | lookup_symbol (const char *name, const struct block *block, |
1993b719 TT |
1826 | domain_enum domain, |
1827 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1828 | { |
1829 | return lookup_symbol_in_language (name, block, domain, | |
1830 | current_language->la_language, | |
2570f2b7 | 1831 | is_a_field_of_this); |
53c5240f PA |
1832 | } |
1833 | ||
cf901d3b | 1834 | /* See symtab.h. */ |
66a17cb6 | 1835 | |
d12307c1 | 1836 | struct block_symbol |
66a17cb6 TT |
1837 | lookup_language_this (const struct language_defn *lang, |
1838 | const struct block *block) | |
1839 | { | |
1840 | if (lang->la_name_of_this == NULL || block == NULL) | |
d12307c1 | 1841 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 | 1842 | |
cc485e62 DE |
1843 | if (symbol_lookup_debug > 1) |
1844 | { | |
1845 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1846 | ||
1847 | fprintf_unfiltered (gdb_stdlog, | |
1848 | "lookup_language_this (%s, %s (objfile %s))", | |
1849 | lang->la_name, host_address_to_string (block), | |
1850 | objfile_debug_name (objfile)); | |
1851 | } | |
1852 | ||
03de6823 | 1853 | while (block) |
66a17cb6 TT |
1854 | { |
1855 | struct symbol *sym; | |
1856 | ||
16b2eaa1 | 1857 | sym = block_lookup_symbol (block, lang->la_name_of_this, VAR_DOMAIN); |
66a17cb6 | 1858 | if (sym != NULL) |
f149aabd | 1859 | { |
cc485e62 DE |
1860 | if (symbol_lookup_debug > 1) |
1861 | { | |
1862 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1863 | SYMBOL_PRINT_NAME (sym), | |
1864 | host_address_to_string (sym), | |
1865 | host_address_to_string (block)); | |
1866 | } | |
d12307c1 | 1867 | return (struct block_symbol) {sym, block}; |
f149aabd | 1868 | } |
66a17cb6 | 1869 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1870 | break; |
66a17cb6 TT |
1871 | block = BLOCK_SUPERBLOCK (block); |
1872 | } | |
03de6823 | 1873 | |
cc485e62 DE |
1874 | if (symbol_lookup_debug > 1) |
1875 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 1876 | return (struct block_symbol) {NULL, NULL}; |
66a17cb6 TT |
1877 | } |
1878 | ||
2dc3df72 TT |
1879 | /* Given TYPE, a structure/union, |
1880 | return 1 if the component named NAME from the ultimate target | |
1881 | structure/union is defined, otherwise, return 0. */ | |
1882 | ||
1883 | static int | |
1993b719 TT |
1884 | check_field (struct type *type, const char *name, |
1885 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1886 | { |
1887 | int i; | |
1888 | ||
1889 | /* The type may be a stub. */ | |
f168693b | 1890 | type = check_typedef (type); |
2dc3df72 TT |
1891 | |
1892 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1893 | { | |
1894 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1895 | ||
1896 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1897 | { |
1898 | is_a_field_of_this->type = type; | |
1899 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1900 | return 1; | |
1901 | } | |
2dc3df72 TT |
1902 | } |
1903 | ||
1904 | /* C++: If it was not found as a data field, then try to return it | |
1905 | as a pointer to a method. */ | |
1906 | ||
1907 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1908 | { | |
1909 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1910 | { |
1911 | is_a_field_of_this->type = type; | |
1912 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1913 | return 1; | |
1914 | } | |
2dc3df72 TT |
1915 | } |
1916 | ||
1917 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1918 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1919 | return 1; |
1920 | ||
1921 | return 0; | |
1922 | } | |
1923 | ||
53c5240f | 1924 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 1925 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 1926 | |
d12307c1 | 1927 | static struct block_symbol |
94af9270 KS |
1928 | lookup_symbol_aux (const char *name, const struct block *block, |
1929 | const domain_enum domain, enum language language, | |
1993b719 | 1930 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 1931 | { |
d12307c1 | 1932 | struct block_symbol result; |
53c5240f | 1933 | const struct language_defn *langdef; |
406bc4de | 1934 | |
cc485e62 DE |
1935 | if (symbol_lookup_debug) |
1936 | { | |
1937 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1938 | ||
1939 | fprintf_unfiltered (gdb_stdlog, | |
1940 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
1941 | name, host_address_to_string (block), | |
1942 | objfile != NULL | |
1943 | ? objfile_debug_name (objfile) : "NULL", | |
1944 | domain_name (domain), language_str (language)); | |
1945 | } | |
1946 | ||
9a146a11 EZ |
1947 | /* Make sure we do something sensible with is_a_field_of_this, since |
1948 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
1949 | certainly use it later. If we don't set it, the contents of |
1950 | is_a_field_of_this are undefined. */ | |
9a146a11 | 1951 | if (is_a_field_of_this != NULL) |
1993b719 | 1952 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 1953 | |
e4051eeb DC |
1954 | /* Search specified block and its superiors. Don't search |
1955 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1956 | |
d12307c1 PMR |
1957 | result = lookup_local_symbol (name, block, domain, language); |
1958 | if (result.symbol != NULL) | |
cc485e62 DE |
1959 | { |
1960 | if (symbol_lookup_debug) | |
1961 | { | |
1962 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 1963 | host_address_to_string (result.symbol)); |
cc485e62 | 1964 | } |
d12307c1 | 1965 | return result; |
cc485e62 | 1966 | } |
c906108c | 1967 | |
53c5240f | 1968 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 1969 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
1970 | |
1971 | langdef = language_def (language); | |
5f9a71c3 | 1972 | |
6592e36f TT |
1973 | /* Don't do this check if we are searching for a struct. It will |
1974 | not be found by check_field, but will be found by other | |
1975 | means. */ | |
1976 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 1977 | { |
d12307c1 | 1978 | result = lookup_language_this (langdef, block); |
2b2d9e11 | 1979 | |
d12307c1 | 1980 | if (result.symbol) |
c906108c | 1981 | { |
d12307c1 | 1982 | struct type *t = result.symbol->type; |
9af17804 | 1983 | |
2b2d9e11 VP |
1984 | /* I'm not really sure that type of this can ever |
1985 | be typedefed; just be safe. */ | |
f168693b | 1986 | t = check_typedef (t); |
aa006118 | 1987 | if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t)) |
2b2d9e11 | 1988 | t = TYPE_TARGET_TYPE (t); |
9af17804 | 1989 | |
2b2d9e11 VP |
1990 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
1991 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 1992 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 1993 | langdef->la_name_of_this); |
9af17804 | 1994 | |
1993b719 | 1995 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
1996 | { |
1997 | if (symbol_lookup_debug) | |
1998 | { | |
1999 | fprintf_unfiltered (gdb_stdlog, | |
2000 | "lookup_symbol_aux (...) = NULL\n"); | |
2001 | } | |
d12307c1 | 2002 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2003 | } |
c906108c SS |
2004 | } |
2005 | } | |
2006 | ||
53c5240f | 2007 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 2008 | up static and global variables. */ |
c906108c | 2009 | |
d12307c1 PMR |
2010 | result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain); |
2011 | if (result.symbol != NULL) | |
cc485e62 DE |
2012 | { |
2013 | if (symbol_lookup_debug) | |
2014 | { | |
2015 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 | 2016 | host_address_to_string (result.symbol)); |
cc485e62 | 2017 | } |
d12307c1 | 2018 | return result; |
cc485e62 | 2019 | } |
c906108c | 2020 | |
774b6a14 TT |
2021 | /* Now search all static file-level symbols. Not strictly correct, |
2022 | but more useful than an error. */ | |
41f62f39 | 2023 | |
d12307c1 | 2024 | result = lookup_static_symbol (name, domain); |
cc485e62 DE |
2025 | if (symbol_lookup_debug) |
2026 | { | |
2027 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
d12307c1 PMR |
2028 | result.symbol != NULL |
2029 | ? host_address_to_string (result.symbol) | |
2030 | : "NULL"); | |
cc485e62 | 2031 | } |
d12307c1 | 2032 | return result; |
41f62f39 JK |
2033 | } |
2034 | ||
e4051eeb | 2035 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 2036 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b | 2037 | |
d12307c1 | 2038 | static struct block_symbol |
74016e12 DE |
2039 | lookup_local_symbol (const char *name, const struct block *block, |
2040 | const domain_enum domain, | |
2041 | enum language language) | |
8155455b DC |
2042 | { |
2043 | struct symbol *sym; | |
89a9d1b1 | 2044 | const struct block *static_block = block_static_block (block); |
13387711 SW |
2045 | const char *scope = block_scope (block); |
2046 | ||
e4051eeb DC |
2047 | /* Check if either no block is specified or it's a global block. */ |
2048 | ||
89a9d1b1 | 2049 | if (static_block == NULL) |
d12307c1 | 2050 | return (struct block_symbol) {NULL, NULL}; |
e4051eeb | 2051 | |
89a9d1b1 | 2052 | while (block != static_block) |
f61e8913 | 2053 | { |
d1a2d36d | 2054 | sym = lookup_symbol_in_block (name, block, domain); |
f61e8913 | 2055 | if (sym != NULL) |
d12307c1 | 2056 | return (struct block_symbol) {sym, block}; |
edb3359d | 2057 | |
f55ee35c | 2058 | if (language == language_cplus || language == language_fortran) |
13387711 | 2059 | { |
d12307c1 PMR |
2060 | struct block_symbol sym |
2061 | = cp_lookup_symbol_imports_or_template (scope, name, block, | |
2062 | domain); | |
2063 | ||
2064 | if (sym.symbol != NULL) | |
13387711 SW |
2065 | return sym; |
2066 | } | |
2067 | ||
edb3359d DJ |
2068 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
2069 | break; | |
f61e8913 DC |
2070 | block = BLOCK_SUPERBLOCK (block); |
2071 | } | |
2072 | ||
3aee438b | 2073 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 2074 | |
d12307c1 | 2075 | return (struct block_symbol) {NULL, NULL}; |
f61e8913 DC |
2076 | } |
2077 | ||
cf901d3b | 2078 | /* See symtab.h. */ |
3a40aaa0 | 2079 | |
c0201579 | 2080 | struct objfile * |
3a40aaa0 UW |
2081 | lookup_objfile_from_block (const struct block *block) |
2082 | { | |
2083 | struct objfile *obj; | |
43f3e411 | 2084 | struct compunit_symtab *cust; |
3a40aaa0 UW |
2085 | |
2086 | if (block == NULL) | |
2087 | return NULL; | |
2088 | ||
2089 | block = block_global_block (block); | |
43f3e411 DE |
2090 | /* Look through all blockvectors. */ |
2091 | ALL_COMPUNITS (obj, cust) | |
2092 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), | |
2093 | GLOBAL_BLOCK)) | |
61f0d762 JK |
2094 | { |
2095 | if (obj->separate_debug_objfile_backlink) | |
2096 | obj = obj->separate_debug_objfile_backlink; | |
2097 | ||
2098 | return obj; | |
2099 | } | |
3a40aaa0 UW |
2100 | |
2101 | return NULL; | |
2102 | } | |
2103 | ||
cf901d3b | 2104 | /* See symtab.h. */ |
f61e8913 | 2105 | |
5f9a71c3 | 2106 | struct symbol * |
d1a2d36d DE |
2107 | lookup_symbol_in_block (const char *name, const struct block *block, |
2108 | const domain_enum domain) | |
f61e8913 DC |
2109 | { |
2110 | struct symbol *sym; | |
f61e8913 | 2111 | |
cc485e62 DE |
2112 | if (symbol_lookup_debug > 1) |
2113 | { | |
2114 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2115 | ||
2116 | fprintf_unfiltered (gdb_stdlog, | |
2117 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
2118 | name, host_address_to_string (block), | |
2119 | objfile_debug_name (objfile), | |
2120 | domain_name (domain)); | |
2121 | } | |
2122 | ||
16b2eaa1 | 2123 | sym = block_lookup_symbol (block, name, domain); |
f61e8913 | 2124 | if (sym) |
8155455b | 2125 | { |
cc485e62 DE |
2126 | if (symbol_lookup_debug > 1) |
2127 | { | |
2128 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
2129 | host_address_to_string (sym)); | |
2130 | } | |
21b556f4 | 2131 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
2132 | } |
2133 | ||
cc485e62 DE |
2134 | if (symbol_lookup_debug > 1) |
2135 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
2136 | return NULL; |
2137 | } | |
2138 | ||
cf901d3b | 2139 | /* See symtab.h. */ |
3a40aaa0 | 2140 | |
d12307c1 | 2141 | struct block_symbol |
efad9b6a | 2142 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 2143 | const char *name, |
21b556f4 | 2144 | const domain_enum domain) |
3a40aaa0 | 2145 | { |
efad9b6a | 2146 | struct objfile *objfile; |
3a40aaa0 | 2147 | |
15d123c9 TG |
2148 | for (objfile = main_objfile; |
2149 | objfile; | |
2150 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
2151 | { | |
d12307c1 PMR |
2152 | struct block_symbol result |
2153 | = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain); | |
15d123c9 | 2154 | |
d12307c1 PMR |
2155 | if (result.symbol != NULL) |
2156 | return result; | |
15d123c9 | 2157 | } |
56e3f43c | 2158 | |
d12307c1 | 2159 | return (struct block_symbol) {NULL, NULL}; |
3a40aaa0 UW |
2160 | } |
2161 | ||
19630284 JB |
2162 | /* Check to see if the symbol is defined in one of the OBJFILE's |
2163 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
2164 | depending on whether or not we want to search global symbols or |
2165 | static symbols. */ | |
2166 | ||
d12307c1 | 2167 | static struct block_symbol |
74016e12 DE |
2168 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
2169 | const char *name, const domain_enum domain) | |
19630284 | 2170 | { |
43f3e411 | 2171 | struct compunit_symtab *cust; |
19630284 | 2172 | |
ba715d7f JK |
2173 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
2174 | ||
cc485e62 DE |
2175 | if (symbol_lookup_debug > 1) |
2176 | { | |
2177 | fprintf_unfiltered (gdb_stdlog, | |
2178 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
2179 | objfile_debug_name (objfile), | |
2180 | block_index == GLOBAL_BLOCK | |
2181 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2182 | name, domain_name (domain)); | |
2183 | } | |
2184 | ||
43f3e411 | 2185 | ALL_OBJFILE_COMPUNITS (objfile, cust) |
a743abeb | 2186 | { |
43f3e411 DE |
2187 | const struct blockvector *bv; |
2188 | const struct block *block; | |
d12307c1 | 2189 | struct block_symbol result; |
43f3e411 DE |
2190 | |
2191 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 2192 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2193 | result.symbol = block_lookup_symbol_primary (block, name, domain); |
2194 | result.block = block; | |
2195 | if (result.symbol != NULL) | |
a743abeb | 2196 | { |
cc485e62 DE |
2197 | if (symbol_lookup_debug > 1) |
2198 | { | |
2199 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
d12307c1 | 2200 | host_address_to_string (result.symbol), |
cc485e62 DE |
2201 | host_address_to_string (block)); |
2202 | } | |
d12307c1 PMR |
2203 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2204 | return result; | |
2205 | ||
a743abeb DE |
2206 | } |
2207 | } | |
19630284 | 2208 | |
cc485e62 DE |
2209 | if (symbol_lookup_debug > 1) |
2210 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
d12307c1 | 2211 | return (struct block_symbol) {NULL, NULL}; |
19630284 JB |
2212 | } |
2213 | ||
74016e12 | 2214 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 2215 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
2216 | and all associated separate debug objfiles. |
2217 | ||
2218 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
2219 | because the outer loop will cause them to be searched too. This case is | |
2220 | different. Here we're called from search_symbols where it will only | |
2221 | call us for the the objfile that contains a matching minsym. */ | |
422d65e7 | 2222 | |
d12307c1 | 2223 | static struct block_symbol |
422d65e7 DE |
2224 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, |
2225 | const char *linkage_name, | |
2226 | domain_enum domain) | |
2227 | { | |
2228 | enum language lang = current_language->la_language; | |
422d65e7 DE |
2229 | struct objfile *main_objfile, *cur_objfile; |
2230 | ||
2f408ecb PA |
2231 | demangle_result_storage storage; |
2232 | const char *modified_name = demangle_for_lookup (linkage_name, lang, storage); | |
2233 | ||
422d65e7 DE |
2234 | if (objfile->separate_debug_objfile_backlink) |
2235 | main_objfile = objfile->separate_debug_objfile_backlink; | |
2236 | else | |
2237 | main_objfile = objfile; | |
2238 | ||
2239 | for (cur_objfile = main_objfile; | |
2240 | cur_objfile; | |
2241 | cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile)) | |
2242 | { | |
d12307c1 PMR |
2243 | struct block_symbol result; |
2244 | ||
2245 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, | |
2246 | modified_name, domain); | |
2247 | if (result.symbol == NULL) | |
2248 | result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, | |
2249 | modified_name, domain); | |
2250 | if (result.symbol != NULL) | |
2f408ecb | 2251 | return result; |
422d65e7 DE |
2252 | } |
2253 | ||
d12307c1 | 2254 | return (struct block_symbol) {NULL, NULL}; |
422d65e7 DE |
2255 | } |
2256 | ||
08c23b0d TT |
2257 | /* A helper function that throws an exception when a symbol was found |
2258 | in a psymtab but not in a symtab. */ | |
2259 | ||
2260 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 2261 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 2262 | struct compunit_symtab *cust) |
08c23b0d TT |
2263 | { |
2264 | error (_("\ | |
2265 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
2266 | %s may be an inlined function, or may be a template function\n \ | |
2267 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 2268 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
2269 | name, |
2270 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
2271 | name, name); | |
08c23b0d TT |
2272 | } |
2273 | ||
74016e12 DE |
2274 | /* A helper function for various lookup routines that interfaces with |
2275 | the "quick" symbol table functions. */ | |
8155455b | 2276 | |
d12307c1 | 2277 | static struct block_symbol |
74016e12 DE |
2278 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
2279 | const char *name, const domain_enum domain) | |
8155455b | 2280 | { |
43f3e411 | 2281 | struct compunit_symtab *cust; |
346d1dfe | 2282 | const struct blockvector *bv; |
8155455b | 2283 | const struct block *block; |
d12307c1 | 2284 | struct block_symbol result; |
8155455b | 2285 | |
ccefe4c4 | 2286 | if (!objfile->sf) |
d12307c1 | 2287 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2288 | |
2289 | if (symbol_lookup_debug > 1) | |
2290 | { | |
2291 | fprintf_unfiltered (gdb_stdlog, | |
2292 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
2293 | objfile_debug_name (objfile), | |
2294 | block_index == GLOBAL_BLOCK | |
2295 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2296 | name, domain_name (domain)); | |
2297 | } | |
2298 | ||
43f3e411 DE |
2299 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
2300 | if (cust == NULL) | |
cc485e62 DE |
2301 | { |
2302 | if (symbol_lookup_debug > 1) | |
2303 | { | |
2304 | fprintf_unfiltered (gdb_stdlog, | |
2305 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
2306 | } | |
d12307c1 | 2307 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 | 2308 | } |
8155455b | 2309 | |
43f3e411 | 2310 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2311 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
d12307c1 PMR |
2312 | result.symbol = block_lookup_symbol (block, name, domain); |
2313 | if (result.symbol == NULL) | |
43f3e411 | 2314 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
2315 | |
2316 | if (symbol_lookup_debug > 1) | |
2317 | { | |
2318 | fprintf_unfiltered (gdb_stdlog, | |
2319 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
d12307c1 | 2320 | host_address_to_string (result.symbol), |
cc485e62 DE |
2321 | host_address_to_string (block)); |
2322 | } | |
2323 | ||
d12307c1 PMR |
2324 | result.symbol = fixup_symbol_section (result.symbol, objfile); |
2325 | result.block = block; | |
2326 | return result; | |
8155455b DC |
2327 | } |
2328 | ||
cf901d3b | 2329 | /* See symtab.h. */ |
5f9a71c3 | 2330 | |
d12307c1 | 2331 | struct block_symbol |
f606139a DE |
2332 | basic_lookup_symbol_nonlocal (const struct language_defn *langdef, |
2333 | const char *name, | |
5f9a71c3 | 2334 | const struct block *block, |
21b556f4 | 2335 | const domain_enum domain) |
5f9a71c3 | 2336 | { |
d12307c1 | 2337 | struct block_symbol result; |
5f9a71c3 DC |
2338 | |
2339 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
2340 | this (or what turned into this) was part of lookup_symbol_aux; | |
2341 | I'm much less worried about these questions now, since these | |
2342 | decisions have turned out well, but I leave these comments here | |
2343 | for posterity. */ | |
2344 | ||
2345 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
2346 | not it would be appropriate to search the current global block | |
2347 | here as well. (That's what this code used to do before the | |
2348 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 2349 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
2350 | next. On the other hand, if decode_line_1 is passed an argument |
2351 | like filename:var, then the user presumably wants 'var' to be | |
2352 | searched for in filename. On the third hand, there shouldn't be | |
2353 | multiple global variables all of which are named 'var', and it's | |
2354 | not like decode_line_1 has ever restricted its search to only | |
2355 | global variables in a single filename. All in all, only | |
2356 | searching the static block here seems best: it's correct and it's | |
2357 | cleanest. */ | |
2358 | ||
2359 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
2360 | issue here: if you usually search for global symbols in the | |
2361 | current file, then it would be slightly better to search the | |
2362 | current global block before searching all the symtabs. But there | |
2363 | are other factors that have a much greater effect on performance | |
2364 | than that one, so I don't think we should worry about that for | |
2365 | now. */ | |
2366 | ||
d9060ba6 DE |
2367 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
2368 | the current objfile. Searching the current objfile first is useful | |
2369 | for both matching user expectations as well as performance. */ | |
2370 | ||
d12307c1 PMR |
2371 | result = lookup_symbol_in_static_block (name, block, domain); |
2372 | if (result.symbol != NULL) | |
2373 | return result; | |
5f9a71c3 | 2374 | |
1994afbf DE |
2375 | /* If we didn't find a definition for a builtin type in the static block, |
2376 | search for it now. This is actually the right thing to do and can be | |
2377 | a massive performance win. E.g., when debugging a program with lots of | |
2378 | shared libraries we could search all of them only to find out the | |
2379 | builtin type isn't defined in any of them. This is common for types | |
2380 | like "void". */ | |
2381 | if (domain == VAR_DOMAIN) | |
2382 | { | |
2383 | struct gdbarch *gdbarch; | |
2384 | ||
2385 | if (block == NULL) | |
2386 | gdbarch = target_gdbarch (); | |
2387 | else | |
2388 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
2389 | result.symbol = language_lookup_primitive_type_as_symbol (langdef, |
2390 | gdbarch, name); | |
2391 | result.block = NULL; | |
2392 | if (result.symbol != NULL) | |
2393 | return result; | |
1994afbf DE |
2394 | } |
2395 | ||
08724ab7 | 2396 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
2397 | } |
2398 | ||
cf901d3b | 2399 | /* See symtab.h. */ |
5f9a71c3 | 2400 | |
d12307c1 | 2401 | struct block_symbol |
24d864bb DE |
2402 | lookup_symbol_in_static_block (const char *name, |
2403 | const struct block *block, | |
2404 | const domain_enum domain) | |
5f9a71c3 DC |
2405 | { |
2406 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 2407 | struct symbol *sym; |
5f9a71c3 | 2408 | |
cc485e62 | 2409 | if (static_block == NULL) |
d12307c1 | 2410 | return (struct block_symbol) {NULL, NULL}; |
cc485e62 DE |
2411 | |
2412 | if (symbol_lookup_debug) | |
2413 | { | |
2414 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
2415 | ||
2416 | fprintf_unfiltered (gdb_stdlog, | |
2417 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
2418 | " %s)\n", | |
2419 | name, | |
2420 | host_address_to_string (block), | |
2421 | objfile_debug_name (objfile), | |
2422 | domain_name (domain)); | |
2423 | } | |
2424 | ||
2425 | sym = lookup_symbol_in_block (name, static_block, domain); | |
2426 | if (symbol_lookup_debug) | |
2427 | { | |
2428 | fprintf_unfiltered (gdb_stdlog, | |
2429 | "lookup_symbol_in_static_block (...) = %s\n", | |
2430 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
2431 | } | |
d12307c1 | 2432 | return (struct block_symbol) {sym, static_block}; |
5f9a71c3 DC |
2433 | } |
2434 | ||
af3768e9 DE |
2435 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
2436 | 1) First search expanded symtabs, and if not found | |
2437 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
2438 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2439 | ||
d12307c1 | 2440 | static struct block_symbol |
af3768e9 DE |
2441 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
2442 | const char *name, const domain_enum domain) | |
2443 | { | |
d12307c1 | 2444 | struct block_symbol result; |
af3768e9 | 2445 | |
cc485e62 DE |
2446 | if (symbol_lookup_debug) |
2447 | { | |
2448 | fprintf_unfiltered (gdb_stdlog, | |
2449 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
2450 | objfile_debug_name (objfile), | |
2451 | block_index == GLOBAL_BLOCK | |
2452 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
2453 | name, domain_name (domain)); | |
2454 | } | |
2455 | ||
af3768e9 DE |
2456 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
2457 | name, domain); | |
d12307c1 | 2458 | if (result.symbol != NULL) |
af3768e9 | 2459 | { |
cc485e62 DE |
2460 | if (symbol_lookup_debug) |
2461 | { | |
2462 | fprintf_unfiltered (gdb_stdlog, | |
2463 | "lookup_symbol_in_objfile (...) = %s" | |
2464 | " (in symtabs)\n", | |
d12307c1 | 2465 | host_address_to_string (result.symbol)); |
cc485e62 DE |
2466 | } |
2467 | return result; | |
af3768e9 DE |
2468 | } |
2469 | ||
cc485e62 DE |
2470 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
2471 | name, domain); | |
2472 | if (symbol_lookup_debug) | |
2473 | { | |
2474 | fprintf_unfiltered (gdb_stdlog, | |
2475 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
d12307c1 PMR |
2476 | result.symbol != NULL |
2477 | ? host_address_to_string (result.symbol) | |
cc485e62 | 2478 | : "NULL", |
d12307c1 | 2479 | result.symbol != NULL ? " (via quick fns)" : ""); |
cc485e62 | 2480 | } |
af3768e9 DE |
2481 | return result; |
2482 | } | |
2483 | ||
2484 | /* See symtab.h. */ | |
2485 | ||
d12307c1 | 2486 | struct block_symbol |
af3768e9 DE |
2487 | lookup_static_symbol (const char *name, const domain_enum domain) |
2488 | { | |
f57d2163 | 2489 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
af3768e9 | 2490 | struct objfile *objfile; |
d12307c1 | 2491 | struct block_symbol result; |
f57d2163 DE |
2492 | struct block_symbol_cache *bsc; |
2493 | struct symbol_cache_slot *slot; | |
2494 | ||
2495 | /* Lookup in STATIC_BLOCK is not current-objfile-dependent, so just pass | |
2496 | NULL for OBJFILE_CONTEXT. */ | |
2497 | result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain, | |
2498 | &bsc, &slot); | |
d12307c1 | 2499 | if (result.symbol != NULL) |
f57d2163 | 2500 | { |
d12307c1 PMR |
2501 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2502 | return (struct block_symbol) {NULL, NULL}; | |
f57d2163 DE |
2503 | return result; |
2504 | } | |
af3768e9 DE |
2505 | |
2506 | ALL_OBJFILES (objfile) | |
2507 | { | |
2508 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
d12307c1 | 2509 | if (result.symbol != NULL) |
f57d2163 DE |
2510 | { |
2511 | /* Still pass NULL for OBJFILE_CONTEXT here. */ | |
d12307c1 PMR |
2512 | symbol_cache_mark_found (bsc, slot, NULL, result.symbol, |
2513 | result.block); | |
f57d2163 DE |
2514 | return result; |
2515 | } | |
af3768e9 DE |
2516 | } |
2517 | ||
f57d2163 DE |
2518 | /* Still pass NULL for OBJFILE_CONTEXT here. */ |
2519 | symbol_cache_mark_not_found (bsc, slot, NULL, name, domain); | |
d12307c1 | 2520 | return (struct block_symbol) {NULL, NULL}; |
af3768e9 DE |
2521 | } |
2522 | ||
19630284 JB |
2523 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
2524 | ||
2525 | struct global_sym_lookup_data | |
2526 | { | |
2527 | /* The name of the symbol we are searching for. */ | |
2528 | const char *name; | |
2529 | ||
2530 | /* The domain to use for our search. */ | |
2531 | domain_enum domain; | |
2532 | ||
2533 | /* The field where the callback should store the symbol if found. | |
d12307c1 PMR |
2534 | It should be initialized to {NULL, NULL} before the search is started. */ |
2535 | struct block_symbol result; | |
19630284 JB |
2536 | }; |
2537 | ||
2538 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
2539 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
2540 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
2541 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
2542 | ||
2543 | static int | |
2544 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
2545 | void *cb_data) | |
2546 | { | |
2547 | struct global_sym_lookup_data *data = | |
2548 | (struct global_sym_lookup_data *) cb_data; | |
2549 | ||
d12307c1 PMR |
2550 | gdb_assert (data->result.symbol == NULL |
2551 | && data->result.block == NULL); | |
19630284 | 2552 | |
af3768e9 DE |
2553 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
2554 | data->name, data->domain); | |
19630284 JB |
2555 | |
2556 | /* If we found a match, tell the iterator to stop. Otherwise, | |
2557 | keep going. */ | |
d12307c1 | 2558 | return (data->result.symbol != NULL); |
19630284 JB |
2559 | } |
2560 | ||
cf901d3b | 2561 | /* See symtab.h. */ |
5f9a71c3 | 2562 | |
d12307c1 | 2563 | struct block_symbol |
08724ab7 | 2564 | lookup_global_symbol (const char *name, |
3a40aaa0 | 2565 | const struct block *block, |
21b556f4 | 2566 | const domain_enum domain) |
5f9a71c3 | 2567 | { |
f57d2163 | 2568 | struct symbol_cache *cache = get_symbol_cache (current_program_space); |
d12307c1 | 2569 | struct block_symbol result; |
f57d2163 | 2570 | struct objfile *objfile; |
19630284 | 2571 | struct global_sym_lookup_data lookup_data; |
f57d2163 DE |
2572 | struct block_symbol_cache *bsc; |
2573 | struct symbol_cache_slot *slot; | |
b2fb95e0 | 2574 | |
6a3ca067 | 2575 | objfile = lookup_objfile_from_block (block); |
f57d2163 DE |
2576 | |
2577 | /* First see if we can find the symbol in the cache. | |
2578 | This works because we use the current objfile to qualify the lookup. */ | |
d12307c1 PMR |
2579 | result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain, |
2580 | &bsc, &slot); | |
2581 | if (result.symbol != NULL) | |
f57d2163 | 2582 | { |
d12307c1 PMR |
2583 | if (SYMBOL_LOOKUP_FAILED_P (result)) |
2584 | return (struct block_symbol) {NULL, NULL}; | |
2585 | return result; | |
f57d2163 DE |
2586 | } |
2587 | ||
2588 | /* Call library-specific lookup procedure. */ | |
67ff19f7 | 2589 | if (objfile != NULL) |
d12307c1 | 2590 | result = solib_global_lookup (objfile, name, domain); |
b2fb95e0 | 2591 | |
f57d2163 | 2592 | /* If that didn't work go a global search (of global blocks, heh). */ |
d12307c1 | 2593 | if (result.symbol == NULL) |
f57d2163 DE |
2594 | { |
2595 | memset (&lookup_data, 0, sizeof (lookup_data)); | |
2596 | lookup_data.name = name; | |
2597 | lookup_data.domain = domain; | |
2598 | gdbarch_iterate_over_objfiles_in_search_order | |
2599 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), | |
2600 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); | |
d12307c1 | 2601 | result = lookup_data.result; |
f57d2163 | 2602 | } |
6a3ca067 | 2603 | |
d12307c1 PMR |
2604 | if (result.symbol != NULL) |
2605 | symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block); | |
f57d2163 DE |
2606 | else |
2607 | symbol_cache_mark_not_found (bsc, slot, objfile, name, domain); | |
2608 | ||
d12307c1 | 2609 | return result; |
5f9a71c3 DC |
2610 | } |
2611 | ||
4186eb54 KS |
2612 | int |
2613 | symbol_matches_domain (enum language symbol_language, | |
2614 | domain_enum symbol_domain, | |
2615 | domain_enum domain) | |
2616 | { | |
2617 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
4186eb54 KS |
2618 | Similarly, any Ada type declaration implicitly defines a typedef. */ |
2619 | if (symbol_language == language_cplus | |
2620 | || symbol_language == language_d | |
65547233 TT |
2621 | || symbol_language == language_ada |
2622 | || symbol_language == language_rust) | |
4186eb54 KS |
2623 | { |
2624 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2625 | && symbol_domain == STRUCT_DOMAIN) | |
2626 | return 1; | |
2627 | } | |
2628 | /* For all other languages, strict match is required. */ | |
2629 | return (symbol_domain == domain); | |
2630 | } | |
2631 | ||
cf901d3b | 2632 | /* See symtab.h. */ |
c906108c | 2633 | |
ccefe4c4 TT |
2634 | struct type * |
2635 | lookup_transparent_type (const char *name) | |
c906108c | 2636 | { |
ccefe4c4 TT |
2637 | return current_language->la_lookup_transparent_type (name); |
2638 | } | |
9af17804 | 2639 | |
ccefe4c4 TT |
2640 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2641 | "quick" symbol table functions. */ | |
357e46e7 | 2642 | |
ccefe4c4 | 2643 | static struct type * |
f88cb4b6 | 2644 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2645 | const char *name) |
2646 | { | |
43f3e411 | 2647 | struct compunit_symtab *cust; |
346d1dfe | 2648 | const struct blockvector *bv; |
ccefe4c4 TT |
2649 | struct block *block; |
2650 | struct symbol *sym; | |
c906108c | 2651 | |
ccefe4c4 TT |
2652 | if (!objfile->sf) |
2653 | return NULL; | |
43f3e411 DE |
2654 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2655 | STRUCT_DOMAIN); | |
2656 | if (cust == NULL) | |
ccefe4c4 | 2657 | return NULL; |
c906108c | 2658 | |
43f3e411 | 2659 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2660 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
b2e2f908 DE |
2661 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, |
2662 | block_find_non_opaque_type, NULL); | |
2663 | if (sym == NULL) | |
43f3e411 | 2664 | error_in_psymtab_expansion (block_index, name, cust); |
b2e2f908 DE |
2665 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); |
2666 | return SYMBOL_TYPE (sym); | |
2667 | } | |
08c23b0d | 2668 | |
b2e2f908 DE |
2669 | /* Subroutine of basic_lookup_transparent_type to simplify it. |
2670 | Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE. | |
2671 | BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */ | |
2672 | ||
2673 | static struct type * | |
2674 | basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index, | |
2675 | const char *name) | |
2676 | { | |
2677 | const struct compunit_symtab *cust; | |
2678 | const struct blockvector *bv; | |
2679 | const struct block *block; | |
2680 | const struct symbol *sym; | |
2681 | ||
2682 | ALL_OBJFILE_COMPUNITS (objfile, cust) | |
2683 | { | |
2684 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
2685 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
2686 | sym = block_find_symbol (block, name, STRUCT_DOMAIN, | |
2687 | block_find_non_opaque_type, NULL); | |
2688 | if (sym != NULL) | |
2689 | { | |
2690 | gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))); | |
2691 | return SYMBOL_TYPE (sym); | |
2692 | } | |
2693 | } | |
c906108c | 2694 | |
ccefe4c4 | 2695 | return NULL; |
b368761e | 2696 | } |
c906108c | 2697 | |
b368761e DC |
2698 | /* The standard implementation of lookup_transparent_type. This code |
2699 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2700 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2701 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2702 | global blocks. */ |
c906108c SS |
2703 | |
2704 | struct type * | |
b368761e | 2705 | basic_lookup_transparent_type (const char *name) |
c906108c | 2706 | { |
52f0bd74 | 2707 | struct objfile *objfile; |
ccefe4c4 | 2708 | struct type *t; |
c906108c SS |
2709 | |
2710 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2711 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2712 | of the desired name as a global, then do psymtab-to-symtab |
2713 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2714 | |
58b6ab13 | 2715 | ALL_OBJFILES (objfile) |
c5aa993b | 2716 | { |
b2e2f908 DE |
2717 | t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name); |
2718 | if (t) | |
2719 | return t; | |
c5aa993b | 2720 | } |
c906108c | 2721 | |
ccefe4c4 | 2722 | ALL_OBJFILES (objfile) |
c5aa993b | 2723 | { |
ccefe4c4 TT |
2724 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); |
2725 | if (t) | |
2726 | return t; | |
c5aa993b | 2727 | } |
c906108c SS |
2728 | |
2729 | /* Now search the static file-level symbols. | |
2730 | Not strictly correct, but more useful than an error. | |
2731 | Do the symtab's first, then | |
c378eb4e | 2732 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2733 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2734 | conversion on the fly and return the found symbol. */ |
c906108c | 2735 | |
54ec275a | 2736 | ALL_OBJFILES (objfile) |
c5aa993b | 2737 | { |
b2e2f908 DE |
2738 | t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name); |
2739 | if (t) | |
2740 | return t; | |
c5aa993b | 2741 | } |
c906108c | 2742 | |
ccefe4c4 | 2743 | ALL_OBJFILES (objfile) |
c5aa993b | 2744 | { |
ccefe4c4 TT |
2745 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); |
2746 | if (t) | |
2747 | return t; | |
c5aa993b | 2748 | } |
ccefe4c4 | 2749 | |
c906108c SS |
2750 | return (struct type *) 0; |
2751 | } | |
2752 | ||
4eeaa230 | 2753 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
14bc53a8 PA |
2754 | |
2755 | For each symbol that matches, CALLBACK is called. The symbol is | |
2756 | passed to the callback. | |
2757 | ||
2758 | If CALLBACK returns false, the iteration ends. Otherwise, the | |
4eeaa230 | 2759 | search continues. */ |
f8eba3c6 TT |
2760 | |
2761 | void | |
2762 | iterate_over_symbols (const struct block *block, const char *name, | |
2763 | const domain_enum domain, | |
14bc53a8 | 2764 | gdb::function_view<symbol_found_callback_ftype> callback) |
f8eba3c6 | 2765 | { |
4eeaa230 DE |
2766 | struct block_iterator iter; |
2767 | struct symbol *sym; | |
f8eba3c6 | 2768 | |
358d6ab3 | 2769 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2770 | { |
4186eb54 KS |
2771 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2772 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2773 | { |
14bc53a8 | 2774 | if (!callback (sym)) |
4eeaa230 | 2775 | return; |
f8eba3c6 | 2776 | } |
f8eba3c6 TT |
2777 | } |
2778 | } | |
2779 | ||
43f3e411 DE |
2780 | /* Find the compunit symtab associated with PC and SECTION. |
2781 | This will read in debug info as necessary. */ | |
c906108c | 2782 | |
43f3e411 DE |
2783 | struct compunit_symtab * |
2784 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2785 | { |
43f3e411 DE |
2786 | struct compunit_symtab *cust; |
2787 | struct compunit_symtab *best_cust = NULL; | |
52f0bd74 | 2788 | struct objfile *objfile; |
c906108c | 2789 | CORE_ADDR distance = 0; |
77e371c0 | 2790 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2791 | |
2792 | /* If we know that this is not a text address, return failure. This is | |
2793 | necessary because we loop based on the block's high and low code | |
2794 | addresses, which do not include the data ranges, and because | |
2795 | we call find_pc_sect_psymtab which has a similar restriction based | |
2796 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 TT |
2797 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
2798 | if (msymbol.minsym | |
2799 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
2800 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
2801 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
2802 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
2803 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
8a48e967 | 2804 | return NULL; |
c906108c SS |
2805 | |
2806 | /* Search all symtabs for the one whose file contains our address, and which | |
2807 | is the smallest of all the ones containing the address. This is designed | |
2808 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2809 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2810 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2811 | ||
2812 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2813 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2814 | been read in already via the dependency mechanism. |
2815 | It might be swifter to create several symtabs with the same name | |
2816 | like xcoff does (I'm not sure). | |
2817 | ||
2818 | It also happens for objfiles that have their functions reordered. | |
2819 | For these, the symtab we are looking for is not necessarily read in. */ | |
2820 | ||
43f3e411 | 2821 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 2822 | { |
43f3e411 DE |
2823 | struct block *b; |
2824 | const struct blockvector *bv; | |
2825 | ||
2826 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
c5aa993b | 2827 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
c906108c | 2828 | |
c5aa993b | 2829 | if (BLOCK_START (b) <= pc |
c5aa993b | 2830 | && BLOCK_END (b) > pc |
c5aa993b JM |
2831 | && (distance == 0 |
2832 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2833 | { | |
2834 | /* For an objfile that has its functions reordered, | |
2835 | find_pc_psymtab will find the proper partial symbol table | |
2836 | and we simply return its corresponding symtab. */ | |
2837 | /* In order to better support objfiles that contain both | |
2838 | stabs and coff debugging info, we continue on if a psymtab | |
c378eb4e | 2839 | can't be found. */ |
ccefe4c4 | 2840 | if ((objfile->flags & OBJF_REORDERED) && objfile->sf) |
c5aa993b | 2841 | { |
43f3e411 | 2842 | struct compunit_symtab *result; |
433759f7 | 2843 | |
ccefe4c4 | 2844 | result |
43f3e411 DE |
2845 | = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2846 | msymbol, | |
2847 | pc, section, | |
2848 | 0); | |
2849 | if (result != NULL) | |
ccefe4c4 | 2850 | return result; |
c5aa993b JM |
2851 | } |
2852 | if (section != 0) | |
2853 | { | |
8157b174 | 2854 | struct block_iterator iter; |
261397f8 | 2855 | struct symbol *sym = NULL; |
c906108c | 2856 | |
de4f826b | 2857 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2858 | { |
261397f8 | 2859 | fixup_symbol_section (sym, objfile); |
e27d198c TT |
2860 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, sym), |
2861 | section)) | |
c5aa993b JM |
2862 | break; |
2863 | } | |
de4f826b | 2864 | if (sym == NULL) |
c378eb4e MS |
2865 | continue; /* No symbol in this symtab matches |
2866 | section. */ | |
c5aa993b JM |
2867 | } |
2868 | distance = BLOCK_END (b) - BLOCK_START (b); | |
43f3e411 | 2869 | best_cust = cust; |
c5aa993b JM |
2870 | } |
2871 | } | |
c906108c | 2872 | |
43f3e411 DE |
2873 | if (best_cust != NULL) |
2874 | return best_cust; | |
c906108c | 2875 | |
072cabfe DE |
2876 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2877 | ||
ccefe4c4 TT |
2878 | ALL_OBJFILES (objfile) |
2879 | { | |
43f3e411 | 2880 | struct compunit_symtab *result; |
433759f7 | 2881 | |
ccefe4c4 TT |
2882 | if (!objfile->sf) |
2883 | continue; | |
43f3e411 DE |
2884 | result = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2885 | msymbol, | |
2886 | pc, section, | |
2887 | 1); | |
2888 | if (result != NULL) | |
ccefe4c4 TT |
2889 | return result; |
2890 | } | |
2891 | ||
2892 | return NULL; | |
c906108c SS |
2893 | } |
2894 | ||
43f3e411 DE |
2895 | /* Find the compunit symtab associated with PC. |
2896 | This will read in debug info as necessary. | |
2897 | Backward compatibility, no section. */ | |
c906108c | 2898 | |
43f3e411 DE |
2899 | struct compunit_symtab * |
2900 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2901 | { |
43f3e411 | 2902 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2903 | } |
c906108c | 2904 | \f |
c5aa993b | 2905 | |
7e73cedf | 2906 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
2907 | Return a structure containing a symtab pointer, a line number, |
2908 | and a pc range for the entire source line. | |
2909 | The value's .pc field is NOT the specified pc. | |
2910 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
2911 | use the line that ends there. Otherwise, in that case, the line | |
2912 | that begins there is used. */ | |
2913 | ||
2914 | /* The big complication here is that a line may start in one file, and end just | |
2915 | before the start of another file. This usually occurs when you #include | |
2916 | code in the middle of a subroutine. To properly find the end of a line's PC | |
2917 | range, we must search all symtabs associated with this compilation unit, and | |
2918 | find the one whose first PC is closer than that of the next line in this | |
2919 | symtab. */ | |
2920 | ||
2921 | /* If it's worth the effort, we could be using a binary search. */ | |
2922 | ||
2923 | struct symtab_and_line | |
714835d5 | 2924 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 2925 | { |
43f3e411 DE |
2926 | struct compunit_symtab *cust; |
2927 | struct symtab *iter_s; | |
52f0bd74 AC |
2928 | struct linetable *l; |
2929 | int len; | |
2930 | int i; | |
2931 | struct linetable_entry *item; | |
346d1dfe | 2932 | const struct blockvector *bv; |
7cbd4a93 | 2933 | struct bound_minimal_symbol msymbol; |
c906108c SS |
2934 | |
2935 | /* Info on best line seen so far, and where it starts, and its file. */ | |
2936 | ||
2937 | struct linetable_entry *best = NULL; | |
2938 | CORE_ADDR best_end = 0; | |
2939 | struct symtab *best_symtab = 0; | |
2940 | ||
2941 | /* Store here the first line number | |
2942 | of a file which contains the line at the smallest pc after PC. | |
2943 | If we don't find a line whose range contains PC, | |
2944 | we will use a line one less than this, | |
2945 | with a range from the start of that file to the first line's pc. */ | |
2946 | struct linetable_entry *alt = NULL; | |
c906108c SS |
2947 | |
2948 | /* Info on best line seen in this file. */ | |
2949 | ||
2950 | struct linetable_entry *prev; | |
2951 | ||
2952 | /* If this pc is not from the current frame, | |
2953 | it is the address of the end of a call instruction. | |
2954 | Quite likely that is the start of the following statement. | |
2955 | But what we want is the statement containing the instruction. | |
2956 | Fudge the pc to make sure we get that. */ | |
2957 | ||
b77b1eb7 JB |
2958 | /* It's tempting to assume that, if we can't find debugging info for |
2959 | any function enclosing PC, that we shouldn't search for line | |
2960 | number info, either. However, GAS can emit line number info for | |
2961 | assembly files --- very helpful when debugging hand-written | |
2962 | assembly code. In such a case, we'd have no debug info for the | |
2963 | function, but we would have line info. */ | |
648f4f79 | 2964 | |
c906108c SS |
2965 | if (notcurrent) |
2966 | pc -= 1; | |
2967 | ||
c5aa993b | 2968 | /* elz: added this because this function returned the wrong |
c906108c | 2969 | information if the pc belongs to a stub (import/export) |
c378eb4e | 2970 | to call a shlib function. This stub would be anywhere between |
9af17804 | 2971 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
2972 | taken to be the one of the line before the pc. */ |
2973 | ||
c906108c | 2974 | /* RT: Further explanation: |
c5aa993b | 2975 | |
c906108c SS |
2976 | * We have stubs (trampolines) inserted between procedures. |
2977 | * | |
2978 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
2979 | * exists in the main image. | |
2980 | * | |
2981 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 2982 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
2983 | * the others appear as text. E.g.: |
2984 | * | |
9af17804 | 2985 | * Minimal symbol table for main image |
c906108c SS |
2986 | * main: code for main (text symbol) |
2987 | * shr1: stub (trampoline symbol) | |
2988 | * foo: code for foo (text symbol) | |
2989 | * ... | |
2990 | * Minimal symbol table for "shr1" image: | |
2991 | * ... | |
2992 | * shr1: code for shr1 (text symbol) | |
2993 | * ... | |
2994 | * | |
2995 | * So the code below is trying to detect if we are in the stub | |
2996 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
2997 | * and if found, do the symbolization from the real-code address | |
2998 | * rather than the stub address. | |
2999 | * | |
3000 | * Assumptions being made about the minimal symbol table: | |
3001 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 3002 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 3003 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
3004 | * symbol (the "foo" text symbol for example) and will not |
3005 | * return the trampoline. | |
3006 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
3007 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 3008 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
3009 | * check for the address being the same, to avoid an |
3010 | * infinite recursion. | |
3011 | */ | |
c5aa993b | 3012 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
3013 | if (msymbol.minsym != NULL) |
3014 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 3015 | { |
77e371c0 | 3016 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 3017 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
3018 | NULL); |
3019 | ||
3020 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
3021 | /* I eliminated this warning since it is coming out |
3022 | * in the following situation: | |
3023 | * gdb shmain // test program with shared libraries | |
3024 | * (gdb) break shr1 // function in shared lib | |
3025 | * Warning: In stub for ... | |
9af17804 | 3026 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
3027 | * so of course we can't find the real func/line info, |
3028 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 3029 | * So I commented out the warning. RT */ |
3e43a32a | 3030 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3031 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3032 | ; | |
c5aa993b | 3033 | /* fall through */ |
77e371c0 TT |
3034 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
3035 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 3036 | /* Avoid infinite recursion */ |
c378eb4e | 3037 | /* See above comment about why warning is commented out. */ |
3e43a32a | 3038 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
3039 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
3040 | ; | |
c5aa993b JM |
3041 | /* fall through */ |
3042 | else | |
77e371c0 | 3043 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 3044 | } |
c906108c | 3045 | |
51abb421 PA |
3046 | symtab_and_line val; |
3047 | val.pspace = current_program_space; | |
c906108c | 3048 | |
43f3e411 DE |
3049 | cust = find_pc_sect_compunit_symtab (pc, section); |
3050 | if (cust == NULL) | |
c906108c | 3051 | { |
c378eb4e | 3052 | /* If no symbol information, return previous pc. */ |
c906108c SS |
3053 | if (notcurrent) |
3054 | pc++; | |
3055 | val.pc = pc; | |
3056 | return val; | |
3057 | } | |
3058 | ||
43f3e411 | 3059 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
3060 | |
3061 | /* Look at all the symtabs that share this blockvector. | |
3062 | They all have the same apriori range, that we found was right; | |
3063 | but they have different line tables. */ | |
3064 | ||
43f3e411 | 3065 | ALL_COMPUNIT_FILETABS (cust, iter_s) |
c906108c SS |
3066 | { |
3067 | /* Find the best line in this symtab. */ | |
43f3e411 | 3068 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 3069 | if (!l) |
c5aa993b | 3070 | continue; |
c906108c SS |
3071 | len = l->nitems; |
3072 | if (len <= 0) | |
3073 | { | |
3074 | /* I think len can be zero if the symtab lacks line numbers | |
3075 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
3076 | I'm not sure which, and maybe it depends on the symbol | |
3077 | reader). */ | |
3078 | continue; | |
3079 | } | |
3080 | ||
3081 | prev = NULL; | |
c378eb4e | 3082 | item = l->item; /* Get first line info. */ |
c906108c SS |
3083 | |
3084 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 3085 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 3086 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 3087 | alt = item; |
c906108c SS |
3088 | |
3089 | for (i = 0; i < len; i++, item++) | |
3090 | { | |
3091 | /* Leave prev pointing to the linetable entry for the last line | |
3092 | that started at or before PC. */ | |
3093 | if (item->pc > pc) | |
3094 | break; | |
3095 | ||
3096 | prev = item; | |
3097 | } | |
3098 | ||
3099 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
3100 | item points at the next line. If we ran off the end of the linetable |
3101 | (pc >= start of the last line), then prev == item. If pc < start of | |
3102 | the first line, prev will not be set. */ | |
c906108c SS |
3103 | |
3104 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
3105 | If so, record this file, and its best line, as best so far. Don't |
3106 | save prev if it represents the end of a function (i.e. line number | |
3107 | 0) instead of a real line. */ | |
c906108c | 3108 | |
083ae935 | 3109 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
3110 | { |
3111 | best = prev; | |
43f3e411 | 3112 | best_symtab = iter_s; |
25d53da1 KB |
3113 | |
3114 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
3115 | if (best_end <= best->pc) | |
3116 | best_end = 0; | |
c906108c | 3117 | } |
25d53da1 KB |
3118 | |
3119 | /* If another line (denoted by ITEM) is in the linetable and its | |
3120 | PC is after BEST's PC, but before the current BEST_END, then | |
3121 | use ITEM's PC as the new best_end. */ | |
3122 | if (best && i < len && item->pc > best->pc | |
3123 | && (best_end == 0 || best_end > item->pc)) | |
3124 | best_end = item->pc; | |
c906108c SS |
3125 | } |
3126 | ||
3127 | if (!best_symtab) | |
3128 | { | |
e86e87f7 DJ |
3129 | /* If we didn't find any line number info, just return zeros. |
3130 | We used to return alt->line - 1 here, but that could be | |
3131 | anywhere; if we don't have line number info for this PC, | |
3132 | don't make some up. */ | |
3133 | val.pc = pc; | |
c906108c | 3134 | } |
e8717518 FF |
3135 | else if (best->line == 0) |
3136 | { | |
3137 | /* If our best fit is in a range of PC's for which no line | |
3138 | number info is available (line number is zero) then we didn't | |
c378eb4e | 3139 | find any valid line information. */ |
e8717518 FF |
3140 | val.pc = pc; |
3141 | } | |
c906108c SS |
3142 | else |
3143 | { | |
3144 | val.symtab = best_symtab; | |
3145 | val.line = best->line; | |
3146 | val.pc = best->pc; | |
3147 | if (best_end && (!alt || best_end < alt->pc)) | |
3148 | val.end = best_end; | |
3149 | else if (alt) | |
3150 | val.end = alt->pc; | |
3151 | else | |
3152 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3153 | } | |
3154 | val.section = section; | |
3155 | return val; | |
3156 | } | |
3157 | ||
c378eb4e | 3158 | /* Backward compatibility (no section). */ |
c906108c SS |
3159 | |
3160 | struct symtab_and_line | |
fba45db2 | 3161 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 3162 | { |
714835d5 | 3163 | struct obj_section *section; |
c906108c SS |
3164 | |
3165 | section = find_pc_overlay (pc); | |
3166 | if (pc_in_unmapped_range (pc, section)) | |
3167 | pc = overlay_mapped_address (pc, section); | |
3168 | return find_pc_sect_line (pc, section, notcurrent); | |
3169 | } | |
34248c3a DE |
3170 | |
3171 | /* See symtab.h. */ | |
3172 | ||
3173 | struct symtab * | |
3174 | find_pc_line_symtab (CORE_ADDR pc) | |
3175 | { | |
3176 | struct symtab_and_line sal; | |
3177 | ||
3178 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
3179 | There are currently no callers that ever pass non-zero. */ | |
3180 | sal = find_pc_line (pc, 0); | |
3181 | return sal.symtab; | |
3182 | } | |
c906108c | 3183 | \f |
c906108c SS |
3184 | /* Find line number LINE in any symtab whose name is the same as |
3185 | SYMTAB. | |
3186 | ||
3187 | If found, return the symtab that contains the linetable in which it was | |
3188 | found, set *INDEX to the index in the linetable of the best entry | |
3189 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
3190 | exact match. | |
3191 | ||
3192 | If not found, return NULL. */ | |
3193 | ||
50641945 | 3194 | struct symtab * |
433759f7 MS |
3195 | find_line_symtab (struct symtab *symtab, int line, |
3196 | int *index, int *exact_match) | |
c906108c | 3197 | { |
6f43c46f | 3198 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
3199 | |
3200 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
3201 | so far seen. */ | |
3202 | ||
3203 | int best_index; | |
3204 | struct linetable *best_linetable; | |
3205 | struct symtab *best_symtab; | |
3206 | ||
3207 | /* First try looking it up in the given symtab. */ | |
8435453b | 3208 | best_linetable = SYMTAB_LINETABLE (symtab); |
c906108c | 3209 | best_symtab = symtab; |
f8eba3c6 | 3210 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
3211 | if (best_index < 0 || !exact) |
3212 | { | |
3213 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
3214 | another symtab with the same name. In the case of xcoff, |
3215 | multiple csects for one source file (produced by IBM's FORTRAN | |
3216 | compiler) produce multiple symtabs (this is unavoidable | |
3217 | assuming csects can be at arbitrary places in memory and that | |
3218 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
3219 | |
3220 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
3221 | or 0 if none has been seen so far. |
3222 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
3223 | int best; |
3224 | ||
3225 | struct objfile *objfile; | |
43f3e411 | 3226 | struct compunit_symtab *cu; |
c906108c SS |
3227 | struct symtab *s; |
3228 | ||
3229 | if (best_index >= 0) | |
3230 | best = best_linetable->item[best_index].line; | |
3231 | else | |
3232 | best = 0; | |
3233 | ||
ccefe4c4 | 3234 | ALL_OBJFILES (objfile) |
51432cca | 3235 | { |
ccefe4c4 | 3236 | if (objfile->sf) |
652a8996 | 3237 | objfile->sf->qf->expand_symtabs_with_fullname (objfile, |
05cba821 | 3238 | symtab_to_fullname (symtab)); |
51432cca CES |
3239 | } |
3240 | ||
43f3e411 | 3241 | ALL_FILETABS (objfile, cu, s) |
c5aa993b JM |
3242 | { |
3243 | struct linetable *l; | |
3244 | int ind; | |
c906108c | 3245 | |
3ffc00b8 | 3246 | if (FILENAME_CMP (symtab->filename, s->filename) != 0) |
c5aa993b | 3247 | continue; |
d180bcbd JK |
3248 | if (FILENAME_CMP (symtab_to_fullname (symtab), |
3249 | symtab_to_fullname (s)) != 0) | |
3ffc00b8 | 3250 | continue; |
8435453b | 3251 | l = SYMTAB_LINETABLE (s); |
f8eba3c6 | 3252 | ind = find_line_common (l, line, &exact, 0); |
c5aa993b JM |
3253 | if (ind >= 0) |
3254 | { | |
3255 | if (exact) | |
3256 | { | |
3257 | best_index = ind; | |
3258 | best_linetable = l; | |
3259 | best_symtab = s; | |
3260 | goto done; | |
3261 | } | |
3262 | if (best == 0 || l->item[ind].line < best) | |
3263 | { | |
3264 | best = l->item[ind].line; | |
3265 | best_index = ind; | |
3266 | best_linetable = l; | |
3267 | best_symtab = s; | |
3268 | } | |
3269 | } | |
3270 | } | |
c906108c | 3271 | } |
c5aa993b | 3272 | done: |
c906108c SS |
3273 | if (best_index < 0) |
3274 | return NULL; | |
3275 | ||
3276 | if (index) | |
3277 | *index = best_index; | |
3278 | if (exact_match) | |
3279 | *exact_match = exact; | |
3280 | ||
3281 | return best_symtab; | |
3282 | } | |
f8eba3c6 TT |
3283 | |
3284 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
67d89901 TT |
3285 | exactly match LINE. Returns an empty vector if there are no exact |
3286 | matches, but updates BEST_ITEM in this case. */ | |
f8eba3c6 | 3287 | |
67d89901 | 3288 | std::vector<CORE_ADDR> |
f8eba3c6 TT |
3289 | find_pcs_for_symtab_line (struct symtab *symtab, int line, |
3290 | struct linetable_entry **best_item) | |
3291 | { | |
c656bca5 | 3292 | int start = 0; |
67d89901 | 3293 | std::vector<CORE_ADDR> result; |
f8eba3c6 TT |
3294 | |
3295 | /* First, collect all the PCs that are at this line. */ | |
3296 | while (1) | |
3297 | { | |
3298 | int was_exact; | |
3299 | int idx; | |
3300 | ||
8435453b DE |
3301 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
3302 | start); | |
f8eba3c6 TT |
3303 | if (idx < 0) |
3304 | break; | |
3305 | ||
3306 | if (!was_exact) | |
3307 | { | |
8435453b | 3308 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
3309 | |
3310 | if (*best_item == NULL || item->line < (*best_item)->line) | |
3311 | *best_item = item; | |
3312 | ||
3313 | break; | |
3314 | } | |
3315 | ||
67d89901 | 3316 | result.push_back (SYMTAB_LINETABLE (symtab)->item[idx].pc); |
f8eba3c6 TT |
3317 | start = idx + 1; |
3318 | } | |
3319 | ||
3320 | return result; | |
3321 | } | |
3322 | ||
c906108c SS |
3323 | \f |
3324 | /* Set the PC value for a given source file and line number and return true. | |
3325 | Returns zero for invalid line number (and sets the PC to 0). | |
3326 | The source file is specified with a struct symtab. */ | |
3327 | ||
3328 | int | |
fba45db2 | 3329 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
3330 | { |
3331 | struct linetable *l; | |
3332 | int ind; | |
3333 | ||
3334 | *pc = 0; | |
3335 | if (symtab == 0) | |
3336 | return 0; | |
3337 | ||
3338 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
3339 | if (symtab != NULL) | |
3340 | { | |
8435453b | 3341 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
3342 | *pc = l->item[ind].pc; |
3343 | return 1; | |
3344 | } | |
3345 | else | |
3346 | return 0; | |
3347 | } | |
3348 | ||
3349 | /* Find the range of pc values in a line. | |
3350 | Store the starting pc of the line into *STARTPTR | |
3351 | and the ending pc (start of next line) into *ENDPTR. | |
3352 | Returns 1 to indicate success. | |
3353 | Returns 0 if could not find the specified line. */ | |
3354 | ||
3355 | int | |
fba45db2 KB |
3356 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
3357 | CORE_ADDR *endptr) | |
c906108c SS |
3358 | { |
3359 | CORE_ADDR startaddr; | |
3360 | struct symtab_and_line found_sal; | |
3361 | ||
3362 | startaddr = sal.pc; | |
c5aa993b | 3363 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
3364 | return 0; |
3365 | ||
3366 | /* This whole function is based on address. For example, if line 10 has | |
3367 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
3368 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
3369 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
3370 | This also insures that we never give a range like "starts at 0x134 | |
3371 | and ends at 0x12c". */ | |
3372 | ||
3373 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
3374 | if (found_sal.line != sal.line) | |
3375 | { | |
3376 | /* The specified line (sal) has zero bytes. */ | |
3377 | *startptr = found_sal.pc; | |
3378 | *endptr = found_sal.pc; | |
3379 | } | |
3380 | else | |
3381 | { | |
3382 | *startptr = found_sal.pc; | |
3383 | *endptr = found_sal.end; | |
3384 | } | |
3385 | return 1; | |
3386 | } | |
3387 | ||
3388 | /* Given a line table and a line number, return the index into the line | |
3389 | table for the pc of the nearest line whose number is >= the specified one. | |
3390 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 3391 | START is the index at which to start searching the line table. |
c906108c SS |
3392 | |
3393 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
3394 | ||
3395 | static int | |
aa1ee363 | 3396 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 3397 | int *exact_match, int start) |
c906108c | 3398 | { |
52f0bd74 AC |
3399 | int i; |
3400 | int len; | |
c906108c SS |
3401 | |
3402 | /* BEST is the smallest linenumber > LINENO so far seen, | |
3403 | or 0 if none has been seen so far. | |
3404 | BEST_INDEX identifies the item for it. */ | |
3405 | ||
3406 | int best_index = -1; | |
3407 | int best = 0; | |
3408 | ||
b7589f7d DJ |
3409 | *exact_match = 0; |
3410 | ||
c906108c SS |
3411 | if (lineno <= 0) |
3412 | return -1; | |
3413 | if (l == 0) | |
3414 | return -1; | |
3415 | ||
3416 | len = l->nitems; | |
f8eba3c6 | 3417 | for (i = start; i < len; i++) |
c906108c | 3418 | { |
aa1ee363 | 3419 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
3420 | |
3421 | if (item->line == lineno) | |
3422 | { | |
3423 | /* Return the first (lowest address) entry which matches. */ | |
3424 | *exact_match = 1; | |
3425 | return i; | |
3426 | } | |
3427 | ||
3428 | if (item->line > lineno && (best == 0 || item->line < best)) | |
3429 | { | |
3430 | best = item->line; | |
3431 | best_index = i; | |
3432 | } | |
3433 | } | |
3434 | ||
3435 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
3436 | return best_index; |
3437 | } | |
3438 | ||
3439 | int | |
fba45db2 | 3440 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
3441 | { |
3442 | struct symtab_and_line sal; | |
433759f7 | 3443 | |
c906108c SS |
3444 | sal = find_pc_line (pc, 0); |
3445 | *startptr = sal.pc; | |
3446 | *endptr = sal.end; | |
3447 | return sal.symtab != 0; | |
3448 | } | |
3449 | ||
aab2f208 DE |
3450 | /* Given a function symbol SYM, find the symtab and line for the start |
3451 | of the function. | |
3452 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
6e22494e JK |
3453 | of real code inside the function. |
3454 | This function should return SALs matching those from minsym_found, | |
3455 | otherwise false multiple-locations breakpoints could be placed. */ | |
aab2f208 DE |
3456 | |
3457 | struct symtab_and_line | |
3458 | find_function_start_sal (struct symbol *sym, int funfirstline) | |
3459 | { | |
aab2f208 | 3460 | fixup_symbol_section (sym, NULL); |
51abb421 PA |
3461 | |
3462 | obj_section *section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
3463 | symtab_and_line sal | |
3464 | = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), section, 0); | |
06871ae8 | 3465 | sal.symbol = sym; |
aab2f208 | 3466 | |
6e22494e JK |
3467 | if (funfirstline && sal.symtab != NULL |
3468 | && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab)) | |
3469 | || SYMTAB_LANGUAGE (sal.symtab) == language_asm)) | |
3470 | { | |
141c5cc4 JK |
3471 | struct gdbarch *gdbarch = symbol_arch (sym); |
3472 | ||
6e22494e | 3473 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
141c5cc4 JK |
3474 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3475 | sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc); | |
6e22494e JK |
3476 | return sal; |
3477 | } | |
3478 | ||
aab2f208 DE |
3479 | /* We always should have a line for the function start address. |
3480 | If we don't, something is odd. Create a plain SAL refering | |
3481 | just the PC and hope that skip_prologue_sal (if requested) | |
3482 | can find a line number for after the prologue. */ | |
3483 | if (sal.pc < BLOCK_START (SYMBOL_BLOCK_VALUE (sym))) | |
3484 | { | |
51abb421 | 3485 | sal = {}; |
aab2f208 DE |
3486 | sal.pspace = current_program_space; |
3487 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
08be3fe3 | 3488 | sal.section = section; |
06871ae8 | 3489 | sal.symbol = sym; |
aab2f208 DE |
3490 | } |
3491 | ||
3492 | if (funfirstline) | |
3493 | skip_prologue_sal (&sal); | |
3494 | ||
3495 | return sal; | |
3496 | } | |
3497 | ||
8c7a1ee8 EZ |
3498 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
3499 | address for that function that has an entry in SYMTAB's line info | |
3500 | table. If such an entry cannot be found, return FUNC_ADDR | |
3501 | unaltered. */ | |
eca864fe | 3502 | |
70221824 | 3503 | static CORE_ADDR |
8c7a1ee8 EZ |
3504 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
3505 | { | |
3506 | CORE_ADDR func_start, func_end; | |
3507 | struct linetable *l; | |
952a6d41 | 3508 | int i; |
8c7a1ee8 EZ |
3509 | |
3510 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 3511 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
3512 | if (l == NULL) |
3513 | return func_addr; | |
3514 | ||
3515 | /* Get the range for the function's PC values, or give up if we | |
3516 | cannot, for some reason. */ | |
3517 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
3518 | return func_addr; | |
3519 | ||
3520 | /* Linetable entries are ordered by PC values, see the commentary in | |
3521 | symtab.h where `struct linetable' is defined. Thus, the first | |
3522 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
3523 | address we are looking for. */ | |
3524 | for (i = 0; i < l->nitems; i++) | |
3525 | { | |
3526 | struct linetable_entry *item = &(l->item[i]); | |
3527 | ||
3528 | /* Don't use line numbers of zero, they mark special entries in | |
3529 | the table. See the commentary on symtab.h before the | |
3530 | definition of struct linetable. */ | |
3531 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
3532 | return item->pc; | |
3533 | } | |
3534 | ||
3535 | return func_addr; | |
3536 | } | |
3537 | ||
059acae7 UW |
3538 | /* Adjust SAL to the first instruction past the function prologue. |
3539 | If the PC was explicitly specified, the SAL is not changed. | |
3540 | If the line number was explicitly specified, at most the SAL's PC | |
3541 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 3542 | |
059acae7 UW |
3543 | void |
3544 | skip_prologue_sal (struct symtab_and_line *sal) | |
3545 | { | |
3546 | struct symbol *sym; | |
3547 | struct symtab_and_line start_sal; | |
8be455d7 | 3548 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
3549 | struct obj_section *section; |
3550 | const char *name; | |
3551 | struct objfile *objfile; | |
3552 | struct gdbarch *gdbarch; | |
3977b71f | 3553 | const struct block *b, *function_block; |
8be455d7 | 3554 | int force_skip, skip; |
c906108c | 3555 | |
a4b411d6 | 3556 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
3557 | if (sal->explicit_pc) |
3558 | return; | |
6c95b8df | 3559 | |
5ed8105e PA |
3560 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
3561 | ||
059acae7 | 3562 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 3563 | |
059acae7 UW |
3564 | sym = find_pc_sect_function (sal->pc, sal->section); |
3565 | if (sym != NULL) | |
bccdca4a | 3566 | { |
059acae7 UW |
3567 | fixup_symbol_section (sym, NULL); |
3568 | ||
08be3fe3 | 3569 | objfile = symbol_objfile (sym); |
059acae7 | 3570 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
08be3fe3 | 3571 | section = SYMBOL_OBJ_SECTION (objfile, sym); |
059acae7 | 3572 | name = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 3573 | } |
059acae7 UW |
3574 | else |
3575 | { | |
7c7b6655 TT |
3576 | struct bound_minimal_symbol msymbol |
3577 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 3578 | |
7c7b6655 | 3579 | if (msymbol.minsym == NULL) |
5ed8105e | 3580 | return; |
059acae7 | 3581 | |
7c7b6655 | 3582 | objfile = msymbol.objfile; |
77e371c0 | 3583 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
3584 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
3585 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
3586 | } |
3587 | ||
3588 | gdbarch = get_objfile_arch (objfile); | |
3589 | ||
8be455d7 JK |
3590 | /* Process the prologue in two passes. In the first pass try to skip the |
3591 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
3592 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
3593 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 3594 | |
8be455d7 JK |
3595 | skip = 1; |
3596 | force_skip = 1; | |
059acae7 | 3597 | |
8be455d7 JK |
3598 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
3599 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
3600 | have to be set by the caller so we use SYM instead. */ | |
08be3fe3 DE |
3601 | if (sym != NULL |
3602 | && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym)))) | |
8be455d7 | 3603 | force_skip = 0; |
059acae7 | 3604 | |
8be455d7 JK |
3605 | saved_pc = pc; |
3606 | do | |
c906108c | 3607 | { |
8be455d7 | 3608 | pc = saved_pc; |
4309257c | 3609 | |
8be455d7 JK |
3610 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3611 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3612 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3613 | pc = overlay_unmapped_address (pc, section); | |
3614 | ||
3615 | /* Skip "first line" of function (which is actually its prologue). */ | |
3616 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3617 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3618 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 | 3619 | if (skip) |
46a62268 | 3620 | pc = gdbarch_skip_prologue_noexcept (gdbarch, pc); |
8be455d7 JK |
3621 | |
3622 | /* For overlays, map pc back into its mapped VMA range. */ | |
3623 | pc = overlay_mapped_address (pc, section); | |
3624 | ||
3625 | /* Calculate line number. */ | |
059acae7 | 3626 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3627 | |
3628 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3629 | line is still part of the same function. */ | |
3630 | if (skip && start_sal.pc != pc | |
b1d96efd JK |
3631 | && (sym ? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
3632 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
7cbd4a93 TT |
3633 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3634 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3635 | { |
3636 | /* First pc of next line */ | |
3637 | pc = start_sal.end; | |
3638 | /* Recalculate the line number (might not be N+1). */ | |
3639 | start_sal = find_pc_sect_line (pc, section, 0); | |
3640 | } | |
3641 | ||
3642 | /* On targets with executable formats that don't have a concept of | |
3643 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3644 | to `__main' in `main' between the prologue and before user | |
3645 | code. */ | |
3646 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3647 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3648 | { |
3649 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3650 | /* Recalculate the line number (might not be N+1). */ | |
3651 | start_sal = find_pc_sect_line (pc, section, 0); | |
3652 | force_skip = 1; | |
3653 | } | |
4309257c | 3654 | } |
8be455d7 | 3655 | while (!force_skip && skip--); |
4309257c | 3656 | |
8c7a1ee8 EZ |
3657 | /* If we still don't have a valid source line, try to find the first |
3658 | PC in the lineinfo table that belongs to the same function. This | |
3659 | happens with COFF debug info, which does not seem to have an | |
3660 | entry in lineinfo table for the code after the prologue which has | |
3661 | no direct relation to source. For example, this was found to be | |
3662 | the case with the DJGPP target using "gcc -gcoff" when the | |
3663 | compiler inserted code after the prologue to make sure the stack | |
3664 | is aligned. */ | |
8be455d7 | 3665 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 | 3666 | { |
08be3fe3 | 3667 | pc = skip_prologue_using_lineinfo (pc, symbol_symtab (sym)); |
8c7a1ee8 | 3668 | /* Recalculate the line number. */ |
059acae7 | 3669 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3670 | } |
3671 | ||
059acae7 UW |
3672 | /* If we're already past the prologue, leave SAL unchanged. Otherwise |
3673 | forward SAL to the end of the prologue. */ | |
3674 | if (sal->pc >= pc) | |
3675 | return; | |
3676 | ||
3677 | sal->pc = pc; | |
3678 | sal->section = section; | |
3679 | ||
3680 | /* Unless the explicit_line flag was set, update the SAL line | |
3681 | and symtab to correspond to the modified PC location. */ | |
3682 | if (sal->explicit_line) | |
3683 | return; | |
3684 | ||
3685 | sal->symtab = start_sal.symtab; | |
3686 | sal->line = start_sal.line; | |
3687 | sal->end = start_sal.end; | |
c906108c | 3688 | |
edb3359d DJ |
3689 | /* Check if we are now inside an inlined function. If we can, |
3690 | use the call site of the function instead. */ | |
059acae7 | 3691 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3692 | function_block = NULL; |
3693 | while (b != NULL) | |
3694 | { | |
3695 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3696 | function_block = b; | |
3697 | else if (BLOCK_FUNCTION (b) != NULL) | |
3698 | break; | |
3699 | b = BLOCK_SUPERBLOCK (b); | |
3700 | } | |
3701 | if (function_block != NULL | |
3702 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3703 | { | |
059acae7 | 3704 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
08be3fe3 | 3705 | sal->symtab = symbol_symtab (BLOCK_FUNCTION (function_block)); |
edb3359d | 3706 | } |
c906108c | 3707 | } |
50641945 | 3708 | |
f1f58506 DE |
3709 | /* Given PC at the function's start address, attempt to find the |
3710 | prologue end using SAL information. Return zero if the skip fails. | |
3711 | ||
3712 | A non-optimized prologue traditionally has one SAL for the function | |
3713 | and a second for the function body. A single line function has | |
3714 | them both pointing at the same line. | |
3715 | ||
3716 | An optimized prologue is similar but the prologue may contain | |
3717 | instructions (SALs) from the instruction body. Need to skip those | |
3718 | while not getting into the function body. | |
3719 | ||
3720 | The functions end point and an increasing SAL line are used as | |
3721 | indicators of the prologue's endpoint. | |
3722 | ||
3723 | This code is based on the function refine_prologue_limit | |
3724 | (found in ia64). */ | |
3725 | ||
3726 | CORE_ADDR | |
3727 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3728 | { | |
3729 | struct symtab_and_line prologue_sal; | |
3730 | CORE_ADDR start_pc; | |
3731 | CORE_ADDR end_pc; | |
3732 | const struct block *bl; | |
3733 | ||
3734 | /* Get an initial range for the function. */ | |
3735 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3736 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3737 | ||
3738 | prologue_sal = find_pc_line (start_pc, 0); | |
3739 | if (prologue_sal.line != 0) | |
3740 | { | |
3741 | /* For languages other than assembly, treat two consecutive line | |
3742 | entries at the same address as a zero-instruction prologue. | |
3743 | The GNU assembler emits separate line notes for each instruction | |
3744 | in a multi-instruction macro, but compilers generally will not | |
3745 | do this. */ | |
3746 | if (prologue_sal.symtab->language != language_asm) | |
3747 | { | |
8435453b | 3748 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3749 | int idx = 0; |
3750 | ||
3751 | /* Skip any earlier lines, and any end-of-sequence marker | |
3752 | from a previous function. */ | |
3753 | while (linetable->item[idx].pc != prologue_sal.pc | |
3754 | || linetable->item[idx].line == 0) | |
3755 | idx++; | |
3756 | ||
3757 | if (idx+1 < linetable->nitems | |
3758 | && linetable->item[idx+1].line != 0 | |
3759 | && linetable->item[idx+1].pc == start_pc) | |
3760 | return start_pc; | |
3761 | } | |
3762 | ||
3763 | /* If there is only one sal that covers the entire function, | |
3764 | then it is probably a single line function, like | |
3765 | "foo(){}". */ | |
3766 | if (prologue_sal.end >= end_pc) | |
3767 | return 0; | |
3768 | ||
3769 | while (prologue_sal.end < end_pc) | |
3770 | { | |
3771 | struct symtab_and_line sal; | |
3772 | ||
3773 | sal = find_pc_line (prologue_sal.end, 0); | |
3774 | if (sal.line == 0) | |
3775 | break; | |
3776 | /* Assume that a consecutive SAL for the same (or larger) | |
3777 | line mark the prologue -> body transition. */ | |
3778 | if (sal.line >= prologue_sal.line) | |
3779 | break; | |
3780 | /* Likewise if we are in a different symtab altogether | |
3781 | (e.g. within a file included via #include). */ | |
3782 | if (sal.symtab != prologue_sal.symtab) | |
3783 | break; | |
3784 | ||
3785 | /* The line number is smaller. Check that it's from the | |
3786 | same function, not something inlined. If it's inlined, | |
3787 | then there is no point comparing the line numbers. */ | |
3788 | bl = block_for_pc (prologue_sal.end); | |
3789 | while (bl) | |
3790 | { | |
3791 | if (block_inlined_p (bl)) | |
3792 | break; | |
3793 | if (BLOCK_FUNCTION (bl)) | |
3794 | { | |
3795 | bl = NULL; | |
3796 | break; | |
3797 | } | |
3798 | bl = BLOCK_SUPERBLOCK (bl); | |
3799 | } | |
3800 | if (bl != NULL) | |
3801 | break; | |
3802 | ||
3803 | /* The case in which compiler's optimizer/scheduler has | |
3804 | moved instructions into the prologue. We look ahead in | |
3805 | the function looking for address ranges whose | |
3806 | corresponding line number is less the first one that we | |
3807 | found for the function. This is more conservative then | |
3808 | refine_prologue_limit which scans a large number of SALs | |
3809 | looking for any in the prologue. */ | |
3810 | prologue_sal = sal; | |
3811 | } | |
3812 | } | |
3813 | ||
3814 | if (prologue_sal.end < end_pc) | |
3815 | /* Return the end of this line, or zero if we could not find a | |
3816 | line. */ | |
3817 | return prologue_sal.end; | |
3818 | else | |
3819 | /* Don't return END_PC, which is past the end of the function. */ | |
3820 | return prologue_sal.pc; | |
3821 | } | |
bf223d3e PA |
3822 | |
3823 | /* See symtab.h. */ | |
3824 | ||
3825 | symbol * | |
3826 | find_function_alias_target (bound_minimal_symbol msymbol) | |
3827 | { | |
3828 | if (!msymbol_is_text (msymbol.minsym)) | |
3829 | return NULL; | |
3830 | ||
3831 | CORE_ADDR addr = BMSYMBOL_VALUE_ADDRESS (msymbol); | |
3832 | symbol *sym = find_pc_function (addr); | |
3833 | if (sym != NULL | |
3834 | && SYMBOL_CLASS (sym) == LOC_BLOCK | |
3835 | && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) == addr) | |
3836 | return sym; | |
3837 | ||
3838 | return NULL; | |
3839 | } | |
3840 | ||
f1f58506 | 3841 | \f |
c906108c SS |
3842 | /* If P is of the form "operator[ \t]+..." where `...' is |
3843 | some legitimate operator text, return a pointer to the | |
3844 | beginning of the substring of the operator text. | |
3845 | Otherwise, return "". */ | |
eca864fe | 3846 | |
96142726 TT |
3847 | static const char * |
3848 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3849 | { |
3850 | *end = ""; | |
8090b426 | 3851 | if (!startswith (p, CP_OPERATOR_STR)) |
c906108c | 3852 | return *end; |
8090b426 | 3853 | p += CP_OPERATOR_LEN; |
c906108c SS |
3854 | |
3855 | /* Don't get faked out by `operator' being part of a longer | |
3856 | identifier. */ | |
c5aa993b | 3857 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3858 | return *end; |
3859 | ||
3860 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
3861 | while (*p == ' ' || *p == '\t') | |
3862 | p++; | |
3863 | ||
c378eb4e | 3864 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 3865 | |
c5aa993b | 3866 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 3867 | { |
96142726 | 3868 | const char *q = p + 1; |
433759f7 | 3869 | |
c5aa993b | 3870 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
3871 | q++; |
3872 | *end = q; | |
3873 | return p; | |
3874 | } | |
3875 | ||
53e8ad3d MS |
3876 | while (*p) |
3877 | switch (*p) | |
3878 | { | |
3879 | case '\\': /* regexp quoting */ | |
3880 | if (p[1] == '*') | |
3881 | { | |
3e43a32a | 3882 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
3883 | *end = p + 3; |
3884 | else /* 'operator\*' */ | |
3885 | *end = p + 2; | |
3886 | return p; | |
3887 | } | |
3888 | else if (p[1] == '[') | |
3889 | { | |
3890 | if (p[2] == ']') | |
3e43a32a MS |
3891 | error (_("mismatched quoting on brackets, " |
3892 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
3893 | else if (p[2] == '\\' && p[3] == ']') |
3894 | { | |
3895 | *end = p + 4; /* 'operator\[\]' */ | |
3896 | return p; | |
3897 | } | |
3898 | else | |
8a3fe4f8 | 3899 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 3900 | } |
9af17804 | 3901 | else |
53e8ad3d | 3902 | { |
c378eb4e | 3903 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
3904 | p++; |
3905 | continue; | |
3906 | } | |
3907 | break; | |
3908 | case '!': | |
3909 | case '=': | |
3910 | case '*': | |
3911 | case '/': | |
3912 | case '%': | |
3913 | case '^': | |
3914 | if (p[1] == '=') | |
3915 | *end = p + 2; | |
3916 | else | |
3917 | *end = p + 1; | |
3918 | return p; | |
3919 | case '<': | |
3920 | case '>': | |
3921 | case '+': | |
3922 | case '-': | |
3923 | case '&': | |
3924 | case '|': | |
3925 | if (p[0] == '-' && p[1] == '>') | |
3926 | { | |
c378eb4e | 3927 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
3928 | if (p[2] == '*') |
3929 | { | |
3930 | *end = p + 3; /* 'operator->*' */ | |
3931 | return p; | |
3932 | } | |
3933 | else if (p[2] == '\\') | |
3934 | { | |
3935 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
3936 | return p; | |
3937 | } | |
3938 | else | |
3939 | { | |
3940 | *end = p + 2; /* 'operator->' */ | |
3941 | return p; | |
3942 | } | |
3943 | } | |
3944 | if (p[1] == '=' || p[1] == p[0]) | |
3945 | *end = p + 2; | |
3946 | else | |
3947 | *end = p + 1; | |
3948 | return p; | |
3949 | case '~': | |
3950 | case ',': | |
c5aa993b | 3951 | *end = p + 1; |
53e8ad3d MS |
3952 | return p; |
3953 | case '(': | |
3954 | if (p[1] != ')') | |
3e43a32a MS |
3955 | error (_("`operator ()' must be specified " |
3956 | "without whitespace in `()'")); | |
c5aa993b | 3957 | *end = p + 2; |
53e8ad3d MS |
3958 | return p; |
3959 | case '?': | |
3960 | if (p[1] != ':') | |
3e43a32a MS |
3961 | error (_("`operator ?:' must be specified " |
3962 | "without whitespace in `?:'")); | |
53e8ad3d MS |
3963 | *end = p + 2; |
3964 | return p; | |
3965 | case '[': | |
3966 | if (p[1] != ']') | |
3e43a32a MS |
3967 | error (_("`operator []' must be specified " |
3968 | "without whitespace in `[]'")); | |
53e8ad3d MS |
3969 | *end = p + 2; |
3970 | return p; | |
3971 | default: | |
8a3fe4f8 | 3972 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
3973 | break; |
3974 | } | |
3975 | ||
c906108c SS |
3976 | *end = ""; |
3977 | return *end; | |
3978 | } | |
c906108c | 3979 | \f |
c5aa993b | 3980 | |
9fdc877b DE |
3981 | /* Data structure to maintain printing state for output_source_filename. */ |
3982 | ||
3983 | struct output_source_filename_data | |
3984 | { | |
3985 | /* Cache of what we've seen so far. */ | |
3986 | struct filename_seen_cache *filename_seen_cache; | |
3987 | ||
3988 | /* Flag of whether we're printing the first one. */ | |
3989 | int first; | |
3990 | }; | |
3991 | ||
c94fdfd0 | 3992 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
3993 | NAME is the name to print. |
3994 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 3995 | |
c94fdfd0 | 3996 | static void |
9fdc877b DE |
3997 | output_source_filename (const char *name, |
3998 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
3999 | { |
4000 | /* Since a single source file can result in several partial symbol | |
4001 | tables, we need to avoid printing it more than once. Note: if | |
4002 | some of the psymtabs are read in and some are not, it gets | |
4003 | printed both under "Source files for which symbols have been | |
4004 | read" and "Source files for which symbols will be read in on | |
4005 | demand". I consider this a reasonable way to deal with the | |
4006 | situation. I'm not sure whether this can also happen for | |
4007 | symtabs; it doesn't hurt to check. */ | |
4008 | ||
4009 | /* Was NAME already seen? */ | |
bbf2f4df | 4010 | if (data->filename_seen_cache->seen (name)) |
c94fdfd0 EZ |
4011 | { |
4012 | /* Yes; don't print it again. */ | |
4013 | return; | |
4014 | } | |
9fdc877b | 4015 | |
c94fdfd0 | 4016 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
4017 | if (! data->first) |
4018 | printf_filtered (", "); | |
4019 | data->first = 0; | |
c906108c SS |
4020 | |
4021 | wrap_here (""); | |
4022 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 4023 | } |
c906108c | 4024 | |
ccefe4c4 | 4025 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 4026 | |
ccefe4c4 | 4027 | static void |
533a737e | 4028 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4029 | void *data) |
4030 | { | |
19ba03f4 SM |
4031 | output_source_filename (fullname ? fullname : filename, |
4032 | (struct output_source_filename_data *) data); | |
ccefe4c4 TT |
4033 | } |
4034 | ||
c906108c | 4035 | static void |
11db9430 | 4036 | info_sources_command (char *ignore, int from_tty) |
c906108c | 4037 | { |
43f3e411 | 4038 | struct compunit_symtab *cu; |
52f0bd74 | 4039 | struct symtab *s; |
52f0bd74 | 4040 | struct objfile *objfile; |
9fdc877b | 4041 | struct output_source_filename_data data; |
c5aa993b | 4042 | |
c906108c SS |
4043 | if (!have_full_symbols () && !have_partial_symbols ()) |
4044 | { | |
8a3fe4f8 | 4045 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 4046 | } |
c5aa993b | 4047 | |
bbf2f4df PA |
4048 | filename_seen_cache filenames_seen; |
4049 | ||
4050 | data.filename_seen_cache = &filenames_seen; | |
9fdc877b | 4051 | |
c906108c SS |
4052 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
4053 | ||
9fdc877b | 4054 | data.first = 1; |
43f3e411 | 4055 | ALL_FILETABS (objfile, cu, s) |
c5aa993b | 4056 | { |
d092d1a2 | 4057 | const char *fullname = symtab_to_fullname (s); |
433759f7 | 4058 | |
f35a17b5 | 4059 | output_source_filename (fullname, &data); |
c5aa993b | 4060 | } |
c906108c | 4061 | printf_filtered ("\n\n"); |
c5aa993b | 4062 | |
3e43a32a MS |
4063 | printf_filtered ("Source files for which symbols " |
4064 | "will be read in on demand:\n\n"); | |
c906108c | 4065 | |
bbf2f4df | 4066 | filenames_seen.clear (); |
9fdc877b | 4067 | data.first = 1; |
bb4142cf DE |
4068 | map_symbol_filenames (output_partial_symbol_filename, &data, |
4069 | 1 /*need_fullname*/); | |
c906108c SS |
4070 | printf_filtered ("\n"); |
4071 | } | |
4072 | ||
fbd9ab74 JK |
4073 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
4074 | non-zero compare only lbasename of FILES. */ | |
4075 | ||
c906108c | 4076 | static int |
96142726 | 4077 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
4078 | { |
4079 | int i; | |
4080 | ||
4081 | if (file != NULL && nfiles != 0) | |
4082 | { | |
4083 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 4084 | { |
fbd9ab74 JK |
4085 | if (compare_filenames_for_search (file, (basenames |
4086 | ? lbasename (files[i]) | |
4087 | : files[i]))) | |
c5aa993b JM |
4088 | return 1; |
4089 | } | |
c906108c SS |
4090 | } |
4091 | else if (nfiles == 0) | |
4092 | return 1; | |
4093 | return 0; | |
4094 | } | |
4095 | ||
b52109bc | 4096 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 4097 | sort symbols, not minimal symbols. */ |
eca864fe | 4098 | |
b9c04fb2 TT |
4099 | int |
4100 | symbol_search::compare_search_syms (const symbol_search &sym_a, | |
4101 | const symbol_search &sym_b) | |
434d2d4f | 4102 | { |
b52109bc DE |
4103 | int c; |
4104 | ||
b9c04fb2 TT |
4105 | c = FILENAME_CMP (symbol_symtab (sym_a.symbol)->filename, |
4106 | symbol_symtab (sym_b.symbol)->filename); | |
b52109bc DE |
4107 | if (c != 0) |
4108 | return c; | |
434d2d4f | 4109 | |
b9c04fb2 TT |
4110 | if (sym_a.block != sym_b.block) |
4111 | return sym_a.block - sym_b.block; | |
b52109bc | 4112 | |
b9c04fb2 TT |
4113 | return strcmp (SYMBOL_PRINT_NAME (sym_a.symbol), |
4114 | SYMBOL_PRINT_NAME (sym_b.symbol)); | |
434d2d4f DJ |
4115 | } |
4116 | ||
b9c04fb2 | 4117 | /* Sort the symbols in RESULT and remove duplicates. */ |
b52109bc DE |
4118 | |
4119 | static void | |
b9c04fb2 | 4120 | sort_search_symbols_remove_dups (std::vector<symbol_search> *result) |
434d2d4f | 4121 | { |
b9c04fb2 TT |
4122 | std::sort (result->begin (), result->end ()); |
4123 | result->erase (std::unique (result->begin (), result->end ()), | |
4124 | result->end ()); | |
434d2d4f | 4125 | } |
5bd98722 | 4126 | |
c906108c | 4127 | /* Search the symbol table for matches to the regular expression REGEXP, |
b9c04fb2 | 4128 | returning the results. |
c906108c SS |
4129 | |
4130 | Only symbols of KIND are searched: | |
e8930875 JK |
4131 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
4132 | and constants (enums) | |
176620f1 EZ |
4133 | FUNCTIONS_DOMAIN - search all functions |
4134 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 4135 | ALL_DOMAIN - an internal error for this function |
c906108c | 4136 | |
b52109bc DE |
4137 | Within each file the results are sorted locally; each symtab's global and |
4138 | static blocks are separately alphabetized. | |
4139 | Duplicate entries are removed. */ | |
c378eb4e | 4140 | |
b9c04fb2 | 4141 | std::vector<symbol_search> |
96142726 | 4142 | search_symbols (const char *regexp, enum search_domain kind, |
b9c04fb2 | 4143 | int nfiles, const char *files[]) |
c906108c | 4144 | { |
43f3e411 | 4145 | struct compunit_symtab *cust; |
346d1dfe | 4146 | const struct blockvector *bv; |
52f0bd74 AC |
4147 | struct block *b; |
4148 | int i = 0; | |
8157b174 | 4149 | struct block_iterator iter; |
52f0bd74 | 4150 | struct symbol *sym; |
c906108c SS |
4151 | struct objfile *objfile; |
4152 | struct minimal_symbol *msymbol; | |
c906108c | 4153 | int found_misc = 0; |
bc043ef3 | 4154 | static const enum minimal_symbol_type types[] |
e8930875 | 4155 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 4156 | static const enum minimal_symbol_type types2[] |
e8930875 | 4157 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 4158 | static const enum minimal_symbol_type types3[] |
e8930875 | 4159 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 4160 | static const enum minimal_symbol_type types4[] |
e8930875 | 4161 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
4162 | enum minimal_symbol_type ourtype; |
4163 | enum minimal_symbol_type ourtype2; | |
4164 | enum minimal_symbol_type ourtype3; | |
4165 | enum minimal_symbol_type ourtype4; | |
b9c04fb2 | 4166 | std::vector<symbol_search> result; |
2d7cc5c7 | 4167 | gdb::optional<compiled_regex> preg; |
c906108c | 4168 | |
e8930875 JK |
4169 | gdb_assert (kind <= TYPES_DOMAIN); |
4170 | ||
8903c50d TT |
4171 | ourtype = types[kind]; |
4172 | ourtype2 = types2[kind]; | |
4173 | ourtype3 = types3[kind]; | |
4174 | ourtype4 = types4[kind]; | |
c906108c | 4175 | |
c906108c SS |
4176 | if (regexp != NULL) |
4177 | { | |
4178 | /* Make sure spacing is right for C++ operators. | |
4179 | This is just a courtesy to make the matching less sensitive | |
4180 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 4181 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
4182 | const char *opend; |
4183 | const char *opname = operator_chars (regexp, &opend); | |
681bf369 | 4184 | int errcode; |
433759f7 | 4185 | |
c906108c | 4186 | if (*opname) |
c5aa993b | 4187 | { |
3e43a32a MS |
4188 | int fix = -1; /* -1 means ok; otherwise number of |
4189 | spaces needed. */ | |
433759f7 | 4190 | |
c5aa993b JM |
4191 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
4192 | { | |
c378eb4e | 4193 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
4194 | if (opname[-1] != ' ' || opname[-2] == ' ') |
4195 | fix = 1; | |
4196 | } | |
4197 | else | |
4198 | { | |
c378eb4e | 4199 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
4200 | if (opname[-1] == ' ') |
4201 | fix = 0; | |
4202 | } | |
c378eb4e | 4203 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
4204 | if (fix >= 0) |
4205 | { | |
045f55a6 | 4206 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 4207 | |
c5aa993b JM |
4208 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
4209 | regexp = tmp; | |
4210 | } | |
4211 | } | |
4212 | ||
2d7cc5c7 PA |
4213 | int cflags = REG_NOSUB | (case_sensitivity == case_sensitive_off |
4214 | ? REG_ICASE : 0); | |
4215 | preg.emplace (regexp, cflags, _("Invalid regexp")); | |
c906108c SS |
4216 | } |
4217 | ||
4218 | /* Search through the partial symtabs *first* for all symbols | |
4219 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 4220 | the machinery below. */ |
14bc53a8 PA |
4221 | expand_symtabs_matching ([&] (const char *filename, bool basenames) |
4222 | { | |
4223 | return file_matches (filename, files, nfiles, | |
4224 | basenames); | |
4225 | }, | |
4226 | [&] (const char *symname) | |
4227 | { | |
2d7cc5c7 PA |
4228 | return (!preg || preg->exec (symname, |
4229 | 0, NULL, 0) == 0); | |
14bc53a8 PA |
4230 | }, |
4231 | NULL, | |
4232 | kind); | |
c906108c SS |
4233 | |
4234 | /* Here, we search through the minimal symbol tables for functions | |
4235 | and variables that match, and force their symbols to be read. | |
4236 | This is in particular necessary for demangled variable names, | |
4237 | which are no longer put into the partial symbol tables. | |
4238 | The symbol will then be found during the scan of symtabs below. | |
4239 | ||
4240 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
4241 | for the function, for variables we have to call |
4242 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
4243 | has debug info. | |
c906108c | 4244 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
4245 | any matching symbols without debug info. |
4246 | We only search the objfile the msymbol came from, we no longer search | |
4247 | all objfiles. In large programs (1000s of shared libs) searching all | |
4248 | objfiles is not worth the pain. */ | |
c906108c | 4249 | |
176620f1 | 4250 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
4251 | { |
4252 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 4253 | { |
89295b4d PP |
4254 | QUIT; |
4255 | ||
422d65e7 DE |
4256 | if (msymbol->created_by_gdb) |
4257 | continue; | |
4258 | ||
d50bd42b DE |
4259 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4260 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4261 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4262 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 4263 | { |
2d7cc5c7 PA |
4264 | if (!preg |
4265 | || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, | |
4266 | NULL, 0) == 0) | |
c5aa993b | 4267 | { |
422d65e7 DE |
4268 | /* Note: An important side-effect of these lookup functions |
4269 | is to expand the symbol table if msymbol is found, for the | |
43f3e411 | 4270 | benefit of the next loop on ALL_COMPUNITS. */ |
422d65e7 | 4271 | if (kind == FUNCTIONS_DOMAIN |
43f3e411 DE |
4272 | ? (find_pc_compunit_symtab |
4273 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL) | |
422d65e7 | 4274 | : (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 4275 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
d12307c1 | 4276 | .symbol == NULL)) |
422d65e7 | 4277 | found_misc = 1; |
c5aa993b JM |
4278 | } |
4279 | } | |
4280 | } | |
c906108c SS |
4281 | } |
4282 | ||
43f3e411 | 4283 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 4284 | { |
43f3e411 | 4285 | bv = COMPUNIT_BLOCKVECTOR (cust); |
d50bd42b DE |
4286 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
4287 | { | |
d50bd42b DE |
4288 | b = BLOCKVECTOR_BLOCK (bv, i); |
4289 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4290 | { | |
08be3fe3 | 4291 | struct symtab *real_symtab = symbol_symtab (sym); |
d50bd42b DE |
4292 | |
4293 | QUIT; | |
4294 | ||
fbd9ab74 JK |
4295 | /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be |
4296 | a substring of symtab_to_fullname as it may contain "./" etc. */ | |
4297 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
4298 | || ((basenames_may_differ | |
4299 | || file_matches (lbasename (real_symtab->filename), | |
4300 | files, nfiles, 1)) | |
4301 | && file_matches (symtab_to_fullname (real_symtab), | |
4302 | files, nfiles, 0))) | |
2d7cc5c7 PA |
4303 | && ((!preg |
4304 | || preg->exec (SYMBOL_NATURAL_NAME (sym), 0, | |
4305 | NULL, 0) == 0) | |
d50bd42b DE |
4306 | && ((kind == VARIABLES_DOMAIN |
4307 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
4308 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
4309 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
4310 | /* LOC_CONST can be used for more than just enums, | |
4311 | e.g., c++ static const members. | |
4312 | We only want to skip enums here. */ | |
4313 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
01465b56 DE |
4314 | && (TYPE_CODE (SYMBOL_TYPE (sym)) |
4315 | == TYPE_CODE_ENUM))) | |
d50bd42b DE |
4316 | || (kind == FUNCTIONS_DOMAIN |
4317 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
4318 | || (kind == TYPES_DOMAIN | |
4319 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
4320 | { | |
4321 | /* match */ | |
b9c04fb2 | 4322 | result.emplace_back (i, sym); |
d50bd42b DE |
4323 | } |
4324 | } | |
d50bd42b | 4325 | } |
c5aa993b | 4326 | } |
c906108c | 4327 | |
b9c04fb2 TT |
4328 | if (!result.empty ()) |
4329 | sort_search_symbols_remove_dups (&result); | |
b52109bc | 4330 | |
c906108c | 4331 | /* If there are no eyes, avoid all contact. I mean, if there are |
01465b56 | 4332 | no debug symbols, then add matching minsyms. */ |
c906108c | 4333 | |
422d65e7 | 4334 | if (found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
c906108c SS |
4335 | { |
4336 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 4337 | { |
89295b4d PP |
4338 | QUIT; |
4339 | ||
422d65e7 DE |
4340 | if (msymbol->created_by_gdb) |
4341 | continue; | |
4342 | ||
d50bd42b DE |
4343 | if (MSYMBOL_TYPE (msymbol) == ourtype |
4344 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
4345 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
4346 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 4347 | { |
2d7cc5c7 PA |
4348 | if (!preg || preg->exec (MSYMBOL_NATURAL_NAME (msymbol), 0, |
4349 | NULL, 0) == 0) | |
c5aa993b | 4350 | { |
422d65e7 DE |
4351 | /* For functions we can do a quick check of whether the |
4352 | symbol might be found via find_pc_symtab. */ | |
4353 | if (kind != FUNCTIONS_DOMAIN | |
43f3e411 DE |
4354 | || (find_pc_compunit_symtab |
4355 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL)) | |
c5aa993b | 4356 | { |
422d65e7 | 4357 | if (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 4358 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
d12307c1 | 4359 | .symbol == NULL) |
c5aa993b JM |
4360 | { |
4361 | /* match */ | |
b9c04fb2 | 4362 | result.emplace_back (i, msymbol, objfile); |
c5aa993b JM |
4363 | } |
4364 | } | |
4365 | } | |
4366 | } | |
4367 | } | |
c906108c SS |
4368 | } |
4369 | ||
b9c04fb2 | 4370 | return result; |
c906108c SS |
4371 | } |
4372 | ||
4373 | /* Helper function for symtab_symbol_info, this function uses | |
4374 | the data returned from search_symbols() to print information | |
c378eb4e MS |
4375 | regarding the match to gdb_stdout. */ |
4376 | ||
c906108c | 4377 | static void |
8903c50d | 4378 | print_symbol_info (enum search_domain kind, |
d01060f0 | 4379 | struct symbol *sym, |
05cba821 | 4380 | int block, const char *last) |
c906108c | 4381 | { |
08be3fe3 | 4382 | struct symtab *s = symbol_symtab (sym); |
05cba821 JK |
4383 | const char *s_filename = symtab_to_filename_for_display (s); |
4384 | ||
4385 | if (last == NULL || filename_cmp (last, s_filename) != 0) | |
c906108c SS |
4386 | { |
4387 | fputs_filtered ("\nFile ", gdb_stdout); | |
05cba821 | 4388 | fputs_filtered (s_filename, gdb_stdout); |
c906108c SS |
4389 | fputs_filtered (":\n", gdb_stdout); |
4390 | } | |
4391 | ||
176620f1 | 4392 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 4393 | printf_filtered ("static "); |
c5aa993b | 4394 | |
c378eb4e | 4395 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
4396 | if (kind == TYPES_DOMAIN |
4397 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 4398 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4399 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4400 | else if (kind < TYPES_DOMAIN |
4401 | || (kind == TYPES_DOMAIN | |
4402 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4403 | { |
4404 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4405 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4406 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4407 | gdb_stdout, 0); |
c906108c SS |
4408 | |
4409 | printf_filtered (";\n"); | |
4410 | } | |
c906108c SS |
4411 | } |
4412 | ||
4413 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4414 | for non-debugging symbols to gdb_stdout. */ |
4415 | ||
c906108c | 4416 | static void |
7c7b6655 | 4417 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4418 | { |
7c7b6655 | 4419 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4420 | char *tmp; |
4421 | ||
d80b854b | 4422 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4423 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4424 | & (CORE_ADDR) 0xffffffff, |
4425 | 8); | |
3ac4495a | 4426 | else |
77e371c0 | 4427 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4428 | 16); |
3ac4495a | 4429 | printf_filtered ("%s %s\n", |
efd66ac6 | 4430 | tmp, MSYMBOL_PRINT_NAME (msymbol.minsym)); |
c906108c SS |
4431 | } |
4432 | ||
4433 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4434 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4435 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4436 | matches. */ |
4437 | ||
c906108c | 4438 | static void |
8903c50d | 4439 | symtab_symbol_info (char *regexp, enum search_domain kind, int from_tty) |
c906108c | 4440 | { |
bc043ef3 | 4441 | static const char * const classnames[] = |
e8930875 | 4442 | {"variable", "function", "type"}; |
05cba821 | 4443 | const char *last_filename = NULL; |
c906108c SS |
4444 | int first = 1; |
4445 | ||
e8930875 JK |
4446 | gdb_assert (kind <= TYPES_DOMAIN); |
4447 | ||
c378eb4e | 4448 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
b9c04fb2 | 4449 | std::vector<symbol_search> symbols = search_symbols (regexp, kind, 0, NULL); |
c906108c | 4450 | |
ca242aad YQ |
4451 | if (regexp != NULL) |
4452 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4453 | classnames[kind], regexp); | |
4454 | else | |
4455 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
c906108c | 4456 | |
b9c04fb2 | 4457 | for (const symbol_search &p : symbols) |
c906108c SS |
4458 | { |
4459 | QUIT; | |
4460 | ||
b9c04fb2 | 4461 | if (p.msymbol.minsym != NULL) |
c5aa993b JM |
4462 | { |
4463 | if (first) | |
4464 | { | |
ca242aad | 4465 | printf_filtered (_("\nNon-debugging symbols:\n")); |
c5aa993b JM |
4466 | first = 0; |
4467 | } | |
b9c04fb2 | 4468 | print_msymbol_info (p.msymbol); |
c5aa993b | 4469 | } |
c906108c | 4470 | else |
c5aa993b JM |
4471 | { |
4472 | print_symbol_info (kind, | |
b9c04fb2 TT |
4473 | p.symbol, |
4474 | p.block, | |
c5aa993b | 4475 | last_filename); |
d01060f0 | 4476 | last_filename |
b9c04fb2 | 4477 | = symtab_to_filename_for_display (symbol_symtab (p.symbol)); |
c5aa993b | 4478 | } |
c906108c | 4479 | } |
c906108c SS |
4480 | } |
4481 | ||
4482 | static void | |
11db9430 | 4483 | info_variables_command (char *regexp, int from_tty) |
c906108c | 4484 | { |
176620f1 | 4485 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
4486 | } |
4487 | ||
4488 | static void | |
11db9430 | 4489 | info_functions_command (char *regexp, int from_tty) |
c906108c | 4490 | { |
176620f1 | 4491 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
4492 | } |
4493 | ||
357e46e7 | 4494 | |
c906108c | 4495 | static void |
11db9430 | 4496 | info_types_command (char *regexp, int from_tty) |
c906108c | 4497 | { |
176620f1 | 4498 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
4499 | } |
4500 | ||
c378eb4e | 4501 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4502 | |
8b93c638 | 4503 | void |
fba45db2 | 4504 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4505 | { |
4506 | rbreak_command (regexp, from_tty); | |
4507 | } | |
8926118c | 4508 | |
95a42b64 TT |
4509 | /* A cleanup function that calls end_rbreak_breakpoints. */ |
4510 | ||
4511 | static void | |
4512 | do_end_rbreak_breakpoints (void *ignore) | |
4513 | { | |
4514 | end_rbreak_breakpoints (); | |
4515 | } | |
4516 | ||
c906108c | 4517 | static void |
fba45db2 | 4518 | rbreak_command (char *regexp, int from_tty) |
c906108c | 4519 | { |
c906108c | 4520 | struct cleanup *old_chain; |
95a42b64 TT |
4521 | char *string = NULL; |
4522 | int len = 0; | |
96142726 TT |
4523 | const char **files = NULL; |
4524 | const char *file_name; | |
8bd10a10 | 4525 | int nfiles = 0; |
c906108c | 4526 | |
8bd10a10 CM |
4527 | if (regexp) |
4528 | { | |
4529 | char *colon = strchr (regexp, ':'); | |
433759f7 | 4530 | |
8bd10a10 CM |
4531 | if (colon && *(colon + 1) != ':') |
4532 | { | |
4533 | int colon_index; | |
96142726 | 4534 | char *local_name; |
8bd10a10 CM |
4535 | |
4536 | colon_index = colon - regexp; | |
224c3ddb | 4537 | local_name = (char *) alloca (colon_index + 1); |
96142726 TT |
4538 | memcpy (local_name, regexp, colon_index); |
4539 | local_name[colon_index--] = 0; | |
4540 | while (isspace (local_name[colon_index])) | |
4541 | local_name[colon_index--] = 0; | |
4542 | file_name = local_name; | |
8bd10a10 CM |
4543 | files = &file_name; |
4544 | nfiles = 1; | |
529480d0 | 4545 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4546 | } |
4547 | } | |
4548 | ||
b9c04fb2 TT |
4549 | std::vector<symbol_search> symbols = search_symbols (regexp, |
4550 | FUNCTIONS_DOMAIN, | |
4551 | nfiles, files); | |
c906108c | 4552 | |
95a42b64 | 4553 | start_rbreak_breakpoints (); |
b9c04fb2 TT |
4554 | old_chain = make_cleanup (do_end_rbreak_breakpoints, NULL); |
4555 | for (const symbol_search &p : symbols) | |
c906108c | 4556 | { |
b9c04fb2 | 4557 | if (p.msymbol.minsym == NULL) |
c5aa993b | 4558 | { |
b9c04fb2 | 4559 | struct symtab *symtab = symbol_symtab (p.symbol); |
d01060f0 | 4560 | const char *fullname = symtab_to_fullname (symtab); |
05cba821 JK |
4561 | |
4562 | int newlen = (strlen (fullname) | |
b9c04fb2 | 4563 | + strlen (SYMBOL_LINKAGE_NAME (p.symbol)) |
95a42b64 | 4564 | + 4); |
433759f7 | 4565 | |
95a42b64 TT |
4566 | if (newlen > len) |
4567 | { | |
224c3ddb | 4568 | string = (char *) xrealloc (string, newlen); |
95a42b64 TT |
4569 | len = newlen; |
4570 | } | |
05cba821 | 4571 | strcpy (string, fullname); |
c5aa993b | 4572 | strcat (string, ":'"); |
b9c04fb2 | 4573 | strcat (string, SYMBOL_LINKAGE_NAME (p.symbol)); |
c5aa993b JM |
4574 | strcat (string, "'"); |
4575 | break_command (string, from_tty); | |
176620f1 | 4576 | print_symbol_info (FUNCTIONS_DOMAIN, |
b9c04fb2 TT |
4577 | p.symbol, |
4578 | p.block, | |
d01060f0 | 4579 | symtab_to_filename_for_display (symtab)); |
c5aa993b | 4580 | } |
c906108c | 4581 | else |
c5aa993b | 4582 | { |
b9c04fb2 | 4583 | int newlen = (strlen (MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)) + 3); |
433759f7 | 4584 | |
95a42b64 TT |
4585 | if (newlen > len) |
4586 | { | |
224c3ddb | 4587 | string = (char *) xrealloc (string, newlen); |
95a42b64 TT |
4588 | len = newlen; |
4589 | } | |
6214f497 | 4590 | strcpy (string, "'"); |
b9c04fb2 | 4591 | strcat (string, MSYMBOL_LINKAGE_NAME (p.msymbol.minsym)); |
6214f497 DJ |
4592 | strcat (string, "'"); |
4593 | ||
4594 | break_command (string, from_tty); | |
c5aa993b | 4595 | printf_filtered ("<function, no debug info> %s;\n", |
b9c04fb2 | 4596 | MSYMBOL_PRINT_NAME (p.msymbol.minsym)); |
c5aa993b | 4597 | } |
c906108c SS |
4598 | } |
4599 | ||
4600 | do_cleanups (old_chain); | |
4601 | } | |
c906108c | 4602 | \f |
c5aa993b | 4603 | |
1976171a JK |
4604 | /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN. |
4605 | ||
4606 | Either sym_text[sym_text_len] != '(' and then we search for any | |
4607 | symbol starting with SYM_TEXT text. | |
4608 | ||
4609 | Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to | |
4610 | be terminated at that point. Partial symbol tables do not have parameters | |
4611 | information. */ | |
4612 | ||
4613 | static int | |
4614 | compare_symbol_name (const char *name, const char *sym_text, int sym_text_len) | |
4615 | { | |
4616 | int (*ncmp) (const char *, const char *, size_t); | |
4617 | ||
4618 | ncmp = (case_sensitivity == case_sensitive_on ? strncmp : strncasecmp); | |
4619 | ||
4620 | if (ncmp (name, sym_text, sym_text_len) != 0) | |
4621 | return 0; | |
4622 | ||
4623 | if (sym_text[sym_text_len] == '(') | |
4624 | { | |
4625 | /* User searches for `name(someth...'. Require NAME to be terminated. | |
4626 | Normally psymtabs and gdbindex have no parameter types so '\0' will be | |
4627 | present but accept even parameters presence. In this case this | |
4628 | function is in fact strcmp_iw but whitespace skipping is not supported | |
4629 | for tab completion. */ | |
4630 | ||
4631 | if (name[sym_text_len] != '\0' && name[sym_text_len] != '(') | |
4632 | return 0; | |
4633 | } | |
4634 | ||
4635 | return 1; | |
4636 | } | |
4637 | ||
c906108c | 4638 | /* Test to see if the symbol specified by SYMNAME (which is already |
c5aa993b | 4639 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
c378eb4e | 4640 | characters. If so, add it to the current completion list. */ |
c906108c SS |
4641 | |
4642 | static void | |
eb3ff9a5 PA |
4643 | completion_list_add_name (completion_tracker &tracker, |
4644 | const char *symname, | |
0d5cff50 DE |
4645 | const char *sym_text, int sym_text_len, |
4646 | const char *text, const char *word) | |
c906108c | 4647 | { |
c378eb4e | 4648 | /* Clip symbols that cannot match. */ |
1976171a JK |
4649 | if (!compare_symbol_name (symname, sym_text, sym_text_len)) |
4650 | return; | |
c906108c | 4651 | |
c906108c | 4652 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4653 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4654 | |
4655 | { | |
fe978cb0 | 4656 | char *newobj; |
433759f7 | 4657 | |
c906108c SS |
4658 | if (word == sym_text) |
4659 | { | |
224c3ddb | 4660 | newobj = (char *) xmalloc (strlen (symname) + 5); |
fe978cb0 | 4661 | strcpy (newobj, symname); |
c906108c SS |
4662 | } |
4663 | else if (word > sym_text) | |
4664 | { | |
4665 | /* Return some portion of symname. */ | |
224c3ddb | 4666 | newobj = (char *) xmalloc (strlen (symname) + 5); |
fe978cb0 | 4667 | strcpy (newobj, symname + (word - sym_text)); |
c906108c SS |
4668 | } |
4669 | else | |
4670 | { | |
4671 | /* Return some of SYM_TEXT plus symname. */ | |
224c3ddb | 4672 | newobj = (char *) xmalloc (strlen (symname) + (sym_text - word) + 5); |
fe978cb0 PA |
4673 | strncpy (newobj, word, sym_text - word); |
4674 | newobj[sym_text - word] = '\0'; | |
4675 | strcat (newobj, symname); | |
c906108c SS |
4676 | } |
4677 | ||
eb3ff9a5 | 4678 | gdb::unique_xmalloc_ptr<char> completion (newobj); |
ef0b411a | 4679 | |
eb3ff9a5 | 4680 | tracker.add_completion (std::move (completion)); |
c906108c SS |
4681 | } |
4682 | } | |
4683 | ||
6da67eb1 PA |
4684 | /* completion_list_add_name wrapper for struct symbol. */ |
4685 | ||
4686 | static void | |
eb3ff9a5 PA |
4687 | completion_list_add_symbol (completion_tracker &tracker, |
4688 | symbol *sym, | |
6da67eb1 PA |
4689 | const char *sym_text, int sym_text_len, |
4690 | const char *text, const char *word) | |
4691 | { | |
eb3ff9a5 | 4692 | completion_list_add_name (tracker, SYMBOL_NATURAL_NAME (sym), |
6da67eb1 PA |
4693 | sym_text, sym_text_len, text, word); |
4694 | } | |
4695 | ||
4696 | /* completion_list_add_name wrapper for struct minimal_symbol. */ | |
4697 | ||
4698 | static void | |
eb3ff9a5 PA |
4699 | completion_list_add_msymbol (completion_tracker &tracker, |
4700 | minimal_symbol *sym, | |
6da67eb1 PA |
4701 | const char *sym_text, int sym_text_len, |
4702 | const char *text, const char *word) | |
4703 | { | |
eb3ff9a5 | 4704 | completion_list_add_name (tracker, MSYMBOL_NATURAL_NAME (sym), |
6da67eb1 PA |
4705 | sym_text, sym_text_len, text, word); |
4706 | } | |
4707 | ||
69636828 AF |
4708 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4709 | again and feed all the selectors into the mill. */ | |
4710 | ||
4711 | static void | |
eb3ff9a5 PA |
4712 | completion_list_objc_symbol (completion_tracker &tracker, |
4713 | struct minimal_symbol *msymbol, | |
0d5cff50 DE |
4714 | const char *sym_text, int sym_text_len, |
4715 | const char *text, const char *word) | |
69636828 AF |
4716 | { |
4717 | static char *tmp = NULL; | |
4718 | static unsigned int tmplen = 0; | |
9af17804 | 4719 | |
0d5cff50 | 4720 | const char *method, *category, *selector; |
69636828 | 4721 | char *tmp2 = NULL; |
9af17804 | 4722 | |
efd66ac6 | 4723 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
4724 | |
4725 | /* Is it a method? */ | |
4726 | if ((method[0] != '-') && (method[0] != '+')) | |
4727 | return; | |
4728 | ||
4729 | if (sym_text[0] == '[') | |
4730 | /* Complete on shortened method method. */ | |
eb3ff9a5 PA |
4731 | completion_list_add_name (tracker, method + 1, |
4732 | sym_text, sym_text_len, text, word); | |
9af17804 | 4733 | |
69636828 AF |
4734 | while ((strlen (method) + 1) >= tmplen) |
4735 | { | |
4736 | if (tmplen == 0) | |
4737 | tmplen = 1024; | |
4738 | else | |
4739 | tmplen *= 2; | |
224c3ddb | 4740 | tmp = (char *) xrealloc (tmp, tmplen); |
69636828 AF |
4741 | } |
4742 | selector = strchr (method, ' '); | |
4743 | if (selector != NULL) | |
4744 | selector++; | |
9af17804 | 4745 | |
69636828 | 4746 | category = strchr (method, '('); |
9af17804 | 4747 | |
69636828 AF |
4748 | if ((category != NULL) && (selector != NULL)) |
4749 | { | |
4750 | memcpy (tmp, method, (category - method)); | |
4751 | tmp[category - method] = ' '; | |
4752 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
eb3ff9a5 PA |
4753 | completion_list_add_name (tracker, tmp, |
4754 | sym_text, sym_text_len, text, word); | |
69636828 | 4755 | if (sym_text[0] == '[') |
eb3ff9a5 PA |
4756 | completion_list_add_name (tracker, tmp + 1, |
4757 | sym_text, sym_text_len, text, word); | |
69636828 | 4758 | } |
9af17804 | 4759 | |
69636828 AF |
4760 | if (selector != NULL) |
4761 | { | |
4762 | /* Complete on selector only. */ | |
4763 | strcpy (tmp, selector); | |
4764 | tmp2 = strchr (tmp, ']'); | |
4765 | if (tmp2 != NULL) | |
4766 | *tmp2 = '\0'; | |
9af17804 | 4767 | |
eb3ff9a5 PA |
4768 | completion_list_add_name (tracker, tmp, |
4769 | sym_text, sym_text_len, text, word); | |
69636828 AF |
4770 | } |
4771 | } | |
4772 | ||
4773 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 4774 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 4775 | |
6f937416 PA |
4776 | static const char * |
4777 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
4778 | { |
4779 | for (; p > text; --p) | |
4780 | { | |
4781 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
4782 | continue; | |
4783 | else | |
4784 | { | |
4785 | if ((current_language->la_language == language_objc)) | |
4786 | { | |
c378eb4e | 4787 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
4788 | continue; |
4789 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 4790 | p -= 2; /* Beginning of a method name. */ |
69636828 | 4791 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 4792 | { /* Might be part of a method name. */ |
6f937416 | 4793 | const char *t = p; |
69636828 AF |
4794 | |
4795 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
4796 | that we are in the middle of a method name. However, | |
4797 | finding "-[" or "+[" should be pretty un-ambiguous. | |
4798 | Unfortunately we have to find it now to decide. */ | |
4799 | ||
4800 | while (t > text) | |
4801 | if (isalnum (t[-1]) || t[-1] == '_' || | |
4802 | t[-1] == ' ' || t[-1] == ':' || | |
4803 | t[-1] == '(' || t[-1] == ')') | |
4804 | --t; | |
4805 | else | |
4806 | break; | |
4807 | ||
4808 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
4809 | p = t - 2; /* Method name detected. */ |
4810 | /* Else we leave with p unchanged. */ | |
69636828 AF |
4811 | } |
4812 | } | |
4813 | break; | |
4814 | } | |
4815 | } | |
4816 | return p; | |
4817 | } | |
4818 | ||
edb3359d | 4819 | static void |
eb3ff9a5 PA |
4820 | completion_list_add_fields (completion_tracker &tracker, |
4821 | struct symbol *sym, | |
4822 | const char *sym_text, int sym_text_len, | |
4823 | const char *text, const char *word) | |
edb3359d DJ |
4824 | { |
4825 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4826 | { | |
4827 | struct type *t = SYMBOL_TYPE (sym); | |
4828 | enum type_code c = TYPE_CODE (t); | |
4829 | int j; | |
4830 | ||
4831 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
4832 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
4833 | if (TYPE_FIELD_NAME (t, j)) | |
eb3ff9a5 | 4834 | completion_list_add_name (tracker, TYPE_FIELD_NAME (t, j), |
edb3359d DJ |
4835 | sym_text, sym_text_len, text, word); |
4836 | } | |
4837 | } | |
4838 | ||
e11c72c7 GB |
4839 | /* Add matching symbols from SYMTAB to the current completion list. */ |
4840 | ||
4841 | static void | |
4842 | add_symtab_completions (struct compunit_symtab *cust, | |
eb3ff9a5 | 4843 | completion_tracker &tracker, |
e11c72c7 GB |
4844 | const char *sym_text, int sym_text_len, |
4845 | const char *text, const char *word, | |
4846 | enum type_code code) | |
4847 | { | |
4848 | struct symbol *sym; | |
4849 | const struct block *b; | |
4850 | struct block_iterator iter; | |
4851 | int i; | |
4852 | ||
ff6fa247 GB |
4853 | if (cust == NULL) |
4854 | return; | |
4855 | ||
e11c72c7 GB |
4856 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
4857 | { | |
4858 | QUIT; | |
4859 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), i); | |
4860 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
4861 | { | |
4862 | if (code == TYPE_CODE_UNDEF | |
4863 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
4864 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
eb3ff9a5 | 4865 | completion_list_add_symbol (tracker, sym, |
e11c72c7 GB |
4866 | sym_text, sym_text_len, |
4867 | text, word); | |
4868 | } | |
4869 | } | |
4870 | } | |
4871 | ||
eb3ff9a5 PA |
4872 | void |
4873 | default_collect_symbol_completion_matches_break_on | |
4874 | (completion_tracker &tracker, | |
c6756f62 | 4875 | complete_symbol_mode mode, |
eb3ff9a5 PA |
4876 | const char *text, const char *word, |
4877 | const char *break_on, enum type_code code) | |
c906108c | 4878 | { |
41d27058 JB |
4879 | /* Problem: All of the symbols have to be copied because readline |
4880 | frees them. I'm not going to worry about this; hopefully there | |
4881 | won't be that many. */ | |
4882 | ||
de4f826b | 4883 | struct symbol *sym; |
43f3e411 | 4884 | struct compunit_symtab *cust; |
de4f826b DC |
4885 | struct minimal_symbol *msymbol; |
4886 | struct objfile *objfile; | |
3977b71f | 4887 | const struct block *b; |
edb3359d | 4888 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 4889 | struct block_iterator iter; |
c906108c | 4890 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 4891 | const char *sym_text; |
c906108c SS |
4892 | /* Length of sym_text. */ |
4893 | int sym_text_len; | |
4894 | ||
41d27058 | 4895 | /* Now look for the symbol we are supposed to complete on. */ |
c6756f62 PA |
4896 | if (mode == complete_symbol_mode::LINESPEC) |
4897 | sym_text = text; | |
4898 | else | |
c906108c | 4899 | { |
6f937416 | 4900 | const char *p; |
c906108c | 4901 | char quote_found; |
6f937416 | 4902 | const char *quote_pos = NULL; |
c906108c SS |
4903 | |
4904 | /* First see if this is a quoted string. */ | |
4905 | quote_found = '\0'; | |
4906 | for (p = text; *p != '\0'; ++p) | |
4907 | { | |
4908 | if (quote_found != '\0') | |
4909 | { | |
4910 | if (*p == quote_found) | |
4911 | /* Found close quote. */ | |
4912 | quote_found = '\0'; | |
4913 | else if (*p == '\\' && p[1] == quote_found) | |
4914 | /* A backslash followed by the quote character | |
c5aa993b | 4915 | doesn't end the string. */ |
c906108c SS |
4916 | ++p; |
4917 | } | |
4918 | else if (*p == '\'' || *p == '"') | |
4919 | { | |
4920 | quote_found = *p; | |
4921 | quote_pos = p; | |
4922 | } | |
4923 | } | |
4924 | if (quote_found == '\'') | |
4925 | /* A string within single quotes can be a symbol, so complete on it. */ | |
4926 | sym_text = quote_pos + 1; | |
4927 | else if (quote_found == '"') | |
4928 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 4929 | to complete it any other way. */ |
c94fdfd0 | 4930 | { |
ef0b411a | 4931 | return; |
c94fdfd0 | 4932 | } |
c906108c SS |
4933 | else |
4934 | { | |
4935 | /* It is not a quoted string. Break it based on the characters | |
4936 | which are in symbols. */ | |
4937 | while (p > text) | |
4938 | { | |
95699ff0 | 4939 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 4940 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
4941 | --p; |
4942 | else | |
4943 | break; | |
4944 | } | |
4945 | sym_text = p; | |
4946 | } | |
4947 | } | |
4948 | ||
4949 | sym_text_len = strlen (sym_text); | |
4950 | ||
1976171a JK |
4951 | /* Prepare SYM_TEXT_LEN for compare_symbol_name. */ |
4952 | ||
4953 | if (current_language->la_language == language_cplus | |
1976171a JK |
4954 | || current_language->la_language == language_fortran) |
4955 | { | |
4956 | /* These languages may have parameters entered by user but they are never | |
4957 | present in the partial symbol tables. */ | |
4958 | ||
585a269a | 4959 | const char *cs = (const char *) memchr (sym_text, '(', sym_text_len); |
1976171a JK |
4960 | |
4961 | if (cs) | |
4962 | sym_text_len = cs - sym_text; | |
4963 | } | |
4964 | gdb_assert (sym_text[sym_text_len] == '\0' || sym_text[sym_text_len] == '('); | |
4965 | ||
c906108c SS |
4966 | /* At this point scan through the misc symbol vectors and add each |
4967 | symbol you find to the list. Eventually we want to ignore | |
4968 | anything that isn't a text symbol (everything else will be | |
e11c72c7 | 4969 | handled by the psymtab code below). */ |
c906108c | 4970 | |
2f68a895 TT |
4971 | if (code == TYPE_CODE_UNDEF) |
4972 | { | |
4973 | ALL_MSYMBOLS (objfile, msymbol) | |
4974 | { | |
4975 | QUIT; | |
9af17804 | 4976 | |
eb3ff9a5 PA |
4977 | completion_list_add_msymbol (tracker, |
4978 | msymbol, sym_text, sym_text_len, | |
4979 | text, word); | |
4980 | ||
4981 | completion_list_objc_symbol (tracker, | |
4982 | msymbol, sym_text, sym_text_len, | |
4983 | text, word); | |
2f68a895 TT |
4984 | } |
4985 | } | |
c906108c | 4986 | |
e11c72c7 GB |
4987 | /* Add completions for all currently loaded symbol tables. */ |
4988 | ALL_COMPUNITS (objfile, cust) | |
eb3ff9a5 PA |
4989 | add_symtab_completions (cust, tracker, |
4990 | sym_text, sym_text_len, text, word, code); | |
e11c72c7 | 4991 | |
14bc53a8 PA |
4992 | /* Look through the partial symtabs for all symbols which begin by |
4993 | matching SYM_TEXT. Expand all CUs that you find to the list. */ | |
4994 | expand_symtabs_matching (NULL, | |
4995 | [&] (const char *name) /* symbol matcher */ | |
4996 | { | |
4997 | return compare_symbol_name (name, | |
4998 | sym_text, | |
4999 | sym_text_len); | |
5000 | }, | |
5001 | [&] (compunit_symtab *symtab) /* expansion notify */ | |
5002 | { | |
5003 | add_symtab_completions (symtab, | |
eb3ff9a5 | 5004 | tracker, |
14bc53a8 PA |
5005 | sym_text, sym_text_len, |
5006 | text, word, code); | |
5007 | }, | |
5008 | ALL_DOMAIN); | |
e11c72c7 | 5009 | |
c906108c | 5010 | /* Search upwards from currently selected frame (so that we can |
edb3359d DJ |
5011 | complete on local vars). Also catch fields of types defined in |
5012 | this places which match our text string. Only complete on types | |
c378eb4e | 5013 | visible from current context. */ |
edb3359d DJ |
5014 | |
5015 | b = get_selected_block (0); | |
5016 | surrounding_static_block = block_static_block (b); | |
5017 | surrounding_global_block = block_global_block (b); | |
5018 | if (surrounding_static_block != NULL) | |
5019 | while (b != surrounding_static_block) | |
5020 | { | |
5021 | QUIT; | |
c906108c | 5022 | |
edb3359d DJ |
5023 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
5024 | { | |
2f68a895 TT |
5025 | if (code == TYPE_CODE_UNDEF) |
5026 | { | |
eb3ff9a5 PA |
5027 | completion_list_add_symbol (tracker, sym, |
5028 | sym_text, sym_text_len, text, | |
2f68a895 | 5029 | word); |
eb3ff9a5 PA |
5030 | completion_list_add_fields (tracker, sym, |
5031 | sym_text, sym_text_len, text, | |
2f68a895 TT |
5032 | word); |
5033 | } | |
5034 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
5035 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
eb3ff9a5 PA |
5036 | completion_list_add_symbol (tracker, sym, |
5037 | sym_text, sym_text_len, text, | |
2f68a895 | 5038 | word); |
edb3359d | 5039 | } |
c5aa993b | 5040 | |
edb3359d DJ |
5041 | /* Stop when we encounter an enclosing function. Do not stop for |
5042 | non-inlined functions - the locals of the enclosing function | |
5043 | are in scope for a nested function. */ | |
5044 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
5045 | break; | |
5046 | b = BLOCK_SUPERBLOCK (b); | |
5047 | } | |
c906108c | 5048 | |
edb3359d | 5049 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 5050 | |
2f68a895 TT |
5051 | if (code == TYPE_CODE_UNDEF) |
5052 | { | |
5053 | if (surrounding_static_block != NULL) | |
5054 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
eb3ff9a5 PA |
5055 | completion_list_add_fields (tracker, sym, |
5056 | sym_text, sym_text_len, text, word); | |
edb3359d | 5057 | |
2f68a895 TT |
5058 | if (surrounding_global_block != NULL) |
5059 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
eb3ff9a5 PA |
5060 | completion_list_add_fields (tracker, sym, |
5061 | sym_text, sym_text_len, text, word); | |
2f68a895 | 5062 | } |
c906108c | 5063 | |
2f68a895 TT |
5064 | /* Skip macros if we are completing a struct tag -- arguable but |
5065 | usually what is expected. */ | |
5066 | if (current_language->la_macro_expansion == macro_expansion_c | |
5067 | && code == TYPE_CODE_UNDEF) | |
9a044a89 TT |
5068 | { |
5069 | struct macro_scope *scope; | |
9a044a89 | 5070 | |
14bc53a8 PA |
5071 | /* This adds a macro's name to the current completion list. */ |
5072 | auto add_macro_name = [&] (const char *macro_name, | |
5073 | const macro_definition *, | |
5074 | macro_source_file *, | |
5075 | int) | |
5076 | { | |
eb3ff9a5 | 5077 | completion_list_add_name (tracker, macro_name, |
14bc53a8 PA |
5078 | sym_text, sym_text_len, |
5079 | text, word); | |
5080 | }; | |
5081 | ||
9a044a89 TT |
5082 | /* Add any macros visible in the default scope. Note that this |
5083 | may yield the occasional wrong result, because an expression | |
5084 | might be evaluated in a scope other than the default. For | |
5085 | example, if the user types "break file:line if <TAB>", the | |
5086 | resulting expression will be evaluated at "file:line" -- but | |
5087 | at there does not seem to be a way to detect this at | |
5088 | completion time. */ | |
5089 | scope = default_macro_scope (); | |
5090 | if (scope) | |
5091 | { | |
5092 | macro_for_each_in_scope (scope->file, scope->line, | |
14bc53a8 | 5093 | add_macro_name); |
9a044a89 TT |
5094 | xfree (scope); |
5095 | } | |
5096 | ||
5097 | /* User-defined macros are always visible. */ | |
14bc53a8 | 5098 | macro_for_each (macro_user_macros, add_macro_name); |
9a044a89 | 5099 | } |
ef0b411a GB |
5100 | } |
5101 | ||
eb3ff9a5 PA |
5102 | void |
5103 | default_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5104 | complete_symbol_mode mode, |
eb3ff9a5 PA |
5105 | const char *text, const char *word, |
5106 | enum type_code code) | |
f55ee35c | 5107 | { |
c6756f62 | 5108 | return default_collect_symbol_completion_matches_break_on (tracker, mode, |
eb3ff9a5 PA |
5109 | text, word, "", |
5110 | code); | |
f55ee35c JK |
5111 | } |
5112 | ||
eb3ff9a5 PA |
5113 | /* Collect all symbols (regardless of class) which begin by matching |
5114 | TEXT. */ | |
41d27058 | 5115 | |
eb3ff9a5 PA |
5116 | void |
5117 | collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5118 | complete_symbol_mode mode, |
eb3ff9a5 | 5119 | const char *text, const char *word) |
41d27058 | 5120 | { |
c6756f62 | 5121 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
eb3ff9a5 PA |
5122 | text, word, |
5123 | TYPE_CODE_UNDEF); | |
2f68a895 TT |
5124 | } |
5125 | ||
eb3ff9a5 PA |
5126 | /* Like collect_symbol_completion_matches, but only collect |
5127 | STRUCT_DOMAIN symbols whose type code is CODE. */ | |
2f68a895 | 5128 | |
eb3ff9a5 PA |
5129 | void |
5130 | collect_symbol_completion_matches_type (completion_tracker &tracker, | |
5131 | const char *text, const char *word, | |
5132 | enum type_code code) | |
2f68a895 | 5133 | { |
c6756f62 PA |
5134 | complete_symbol_mode mode = complete_symbol_mode::EXPRESSION; |
5135 | ||
2f68a895 TT |
5136 | gdb_assert (code == TYPE_CODE_UNION |
5137 | || code == TYPE_CODE_STRUCT | |
2f68a895 | 5138 | || code == TYPE_CODE_ENUM); |
c6756f62 | 5139 | current_language->la_collect_symbol_completion_matches (tracker, mode, |
eb3ff9a5 | 5140 | text, word, code); |
41d27058 JB |
5141 | } |
5142 | ||
eb3ff9a5 PA |
5143 | /* Like collect_symbol_completion_matches, but collects a list of |
5144 | symbols defined in all source files named SRCFILE. */ | |
c94fdfd0 | 5145 | |
eb3ff9a5 PA |
5146 | void |
5147 | collect_file_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 5148 | complete_symbol_mode mode, |
eb3ff9a5 PA |
5149 | const char *text, const char *word, |
5150 | const char *srcfile) | |
c94fdfd0 | 5151 | { |
c94fdfd0 | 5152 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 5153 | const char *sym_text; |
c94fdfd0 EZ |
5154 | /* Length of sym_text. */ |
5155 | int sym_text_len; | |
5156 | ||
5157 | /* Now look for the symbol we are supposed to complete on. | |
5158 | FIXME: This should be language-specific. */ | |
c6756f62 PA |
5159 | if (mode == complete_symbol_mode::LINESPEC) |
5160 | sym_text = text; | |
5161 | else | |
c94fdfd0 | 5162 | { |
6f937416 | 5163 | const char *p; |
c94fdfd0 | 5164 | char quote_found; |
6f937416 | 5165 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
5166 | |
5167 | /* First see if this is a quoted string. */ | |
5168 | quote_found = '\0'; | |
5169 | for (p = text; *p != '\0'; ++p) | |
5170 | { | |
5171 | if (quote_found != '\0') | |
5172 | { | |
5173 | if (*p == quote_found) | |
5174 | /* Found close quote. */ | |
5175 | quote_found = '\0'; | |
5176 | else if (*p == '\\' && p[1] == quote_found) | |
5177 | /* A backslash followed by the quote character | |
5178 | doesn't end the string. */ | |
5179 | ++p; | |
5180 | } | |
5181 | else if (*p == '\'' || *p == '"') | |
5182 | { | |
5183 | quote_found = *p; | |
5184 | quote_pos = p; | |
5185 | } | |
5186 | } | |
5187 | if (quote_found == '\'') | |
5188 | /* A string within single quotes can be a symbol, so complete on it. */ | |
5189 | sym_text = quote_pos + 1; | |
5190 | else if (quote_found == '"') | |
5191 | /* A double-quoted string is never a symbol, nor does it make sense | |
5192 | to complete it any other way. */ | |
5193 | { | |
eb3ff9a5 | 5194 | return; |
c94fdfd0 EZ |
5195 | } |
5196 | else | |
5197 | { | |
69636828 AF |
5198 | /* Not a quoted string. */ |
5199 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
5200 | } |
5201 | } | |
5202 | ||
5203 | sym_text_len = strlen (sym_text); | |
5204 | ||
8f14146e PA |
5205 | /* Go through symtabs for SRCFILE and check the externs and statics |
5206 | for symbols which match. */ | |
5207 | iterate_over_symtabs (srcfile, [&] (symtab *s) | |
c94fdfd0 | 5208 | { |
8f14146e | 5209 | add_symtab_completions (SYMTAB_COMPUNIT (s), |
eb3ff9a5 | 5210 | tracker, |
8f14146e PA |
5211 | sym_text, sym_text_len, |
5212 | text, word, TYPE_CODE_UNDEF); | |
5213 | return false; | |
5214 | }); | |
e27852be DE |
5215 | } |
5216 | ||
c94fdfd0 EZ |
5217 | /* A helper function for make_source_files_completion_list. It adds |
5218 | another file name to a list of possible completions, growing the | |
5219 | list as necessary. */ | |
5220 | ||
5221 | static void | |
6f937416 | 5222 | add_filename_to_list (const char *fname, const char *text, const char *word, |
eb3ff9a5 | 5223 | completion_list *list) |
c94fdfd0 | 5224 | { |
fe978cb0 | 5225 | char *newobj; |
c94fdfd0 EZ |
5226 | size_t fnlen = strlen (fname); |
5227 | ||
c94fdfd0 EZ |
5228 | if (word == text) |
5229 | { | |
5230 | /* Return exactly fname. */ | |
224c3ddb | 5231 | newobj = (char *) xmalloc (fnlen + 5); |
fe978cb0 | 5232 | strcpy (newobj, fname); |
c94fdfd0 EZ |
5233 | } |
5234 | else if (word > text) | |
5235 | { | |
5236 | /* Return some portion of fname. */ | |
224c3ddb | 5237 | newobj = (char *) xmalloc (fnlen + 5); |
fe978cb0 | 5238 | strcpy (newobj, fname + (word - text)); |
c94fdfd0 EZ |
5239 | } |
5240 | else | |
5241 | { | |
5242 | /* Return some of TEXT plus fname. */ | |
224c3ddb | 5243 | newobj = (char *) xmalloc (fnlen + (text - word) + 5); |
fe978cb0 PA |
5244 | strncpy (newobj, word, text - word); |
5245 | newobj[text - word] = '\0'; | |
5246 | strcat (newobj, fname); | |
c94fdfd0 | 5247 | } |
eb3ff9a5 | 5248 | list->emplace_back (newobj); |
c94fdfd0 EZ |
5249 | } |
5250 | ||
5251 | static int | |
5252 | not_interesting_fname (const char *fname) | |
5253 | { | |
5254 | static const char *illegal_aliens[] = { | |
5255 | "_globals_", /* inserted by coff_symtab_read */ | |
5256 | NULL | |
5257 | }; | |
5258 | int i; | |
5259 | ||
5260 | for (i = 0; illegal_aliens[i]; i++) | |
5261 | { | |
0ba1096a | 5262 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
5263 | return 1; |
5264 | } | |
5265 | return 0; | |
5266 | } | |
5267 | ||
ccefe4c4 TT |
5268 | /* An object of this type is passed as the user_data argument to |
5269 | map_partial_symbol_filenames. */ | |
5270 | struct add_partial_filename_data | |
5271 | { | |
9fdc877b | 5272 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
5273 | const char *text; |
5274 | const char *word; | |
ccefe4c4 | 5275 | int text_len; |
eb3ff9a5 | 5276 | completion_list *list; |
ccefe4c4 TT |
5277 | }; |
5278 | ||
5279 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 5280 | |
ccefe4c4 | 5281 | static void |
2837d59e | 5282 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
5283 | void *user_data) |
5284 | { | |
19ba03f4 SM |
5285 | struct add_partial_filename_data *data |
5286 | = (struct add_partial_filename_data *) user_data; | |
ccefe4c4 TT |
5287 | |
5288 | if (not_interesting_fname (filename)) | |
5289 | return; | |
bbf2f4df | 5290 | if (!data->filename_seen_cache->seen (filename) |
0ba1096a | 5291 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
5292 | { |
5293 | /* This file matches for a completion; add it to the | |
5294 | current list of matches. */ | |
49c4e619 | 5295 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
5296 | } |
5297 | else | |
5298 | { | |
5299 | const char *base_name = lbasename (filename); | |
433759f7 | 5300 | |
ccefe4c4 | 5301 | if (base_name != filename |
bbf2f4df | 5302 | && !data->filename_seen_cache->seen (base_name) |
0ba1096a | 5303 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 5304 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
5305 | } |
5306 | } | |
5307 | ||
eb3ff9a5 | 5308 | /* Return a list of all source files whose names begin with matching |
49c4e619 | 5309 | TEXT. The file names are looked up in the symbol tables of this |
eb3ff9a5 | 5310 | program. */ |
c94fdfd0 | 5311 | |
eb3ff9a5 | 5312 | completion_list |
6f937416 | 5313 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 5314 | { |
43f3e411 | 5315 | struct compunit_symtab *cu; |
52f0bd74 | 5316 | struct symtab *s; |
52f0bd74 | 5317 | struct objfile *objfile; |
c94fdfd0 | 5318 | size_t text_len = strlen (text); |
eb3ff9a5 | 5319 | completion_list list; |
31889e00 | 5320 | const char *base_name; |
ccefe4c4 | 5321 | struct add_partial_filename_data datum; |
c94fdfd0 | 5322 | |
c94fdfd0 EZ |
5323 | if (!have_full_symbols () && !have_partial_symbols ()) |
5324 | return list; | |
5325 | ||
bbf2f4df | 5326 | filename_seen_cache filenames_seen; |
9fdc877b | 5327 | |
43f3e411 | 5328 | ALL_FILETABS (objfile, cu, s) |
c94fdfd0 EZ |
5329 | { |
5330 | if (not_interesting_fname (s->filename)) | |
5331 | continue; | |
bbf2f4df | 5332 | if (!filenames_seen.seen (s->filename) |
0ba1096a | 5333 | && filename_ncmp (s->filename, text, text_len) == 0) |
c94fdfd0 EZ |
5334 | { |
5335 | /* This file matches for a completion; add it to the current | |
5336 | list of matches. */ | |
49c4e619 | 5337 | add_filename_to_list (s->filename, text, word, &list); |
c94fdfd0 EZ |
5338 | } |
5339 | else | |
5340 | { | |
5341 | /* NOTE: We allow the user to type a base name when the | |
5342 | debug info records leading directories, but not the other | |
5343 | way around. This is what subroutines of breakpoint | |
5344 | command do when they parse file names. */ | |
31889e00 | 5345 | base_name = lbasename (s->filename); |
c94fdfd0 | 5346 | if (base_name != s->filename |
bbf2f4df | 5347 | && !filenames_seen.seen (base_name) |
0ba1096a | 5348 | && filename_ncmp (base_name, text, text_len) == 0) |
49c4e619 | 5349 | add_filename_to_list (base_name, text, word, &list); |
c94fdfd0 EZ |
5350 | } |
5351 | } | |
5352 | ||
bbf2f4df | 5353 | datum.filename_seen_cache = &filenames_seen; |
ccefe4c4 TT |
5354 | datum.text = text; |
5355 | datum.word = word; | |
5356 | datum.text_len = text_len; | |
5357 | datum.list = &list; | |
bb4142cf DE |
5358 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5359 | 0 /*need_fullname*/); | |
9fdc877b | 5360 | |
c94fdfd0 EZ |
5361 | return list; |
5362 | } | |
c906108c | 5363 | \f |
51cc5b07 | 5364 | /* Track MAIN */ |
32ac0d11 TT |
5365 | |
5366 | /* Return the "main_info" object for the current program space. If | |
5367 | the object has not yet been created, create it and fill in some | |
5368 | default values. */ | |
5369 | ||
5370 | static struct main_info * | |
5371 | get_main_info (void) | |
5372 | { | |
19ba03f4 SM |
5373 | struct main_info *info |
5374 | = (struct main_info *) program_space_data (current_program_space, | |
32ac0d11 TT |
5375 | main_progspace_key); |
5376 | ||
5377 | if (info == NULL) | |
5378 | { | |
3d548a53 TT |
5379 | /* It may seem strange to store the main name in the progspace |
5380 | and also in whatever objfile happens to see a main name in | |
5381 | its debug info. The reason for this is mainly historical: | |
5382 | gdb returned "main" as the name even if no function named | |
5383 | "main" was defined the program; and this approach lets us | |
5384 | keep compatibility. */ | |
32ac0d11 TT |
5385 | info = XCNEW (struct main_info); |
5386 | info->language_of_main = language_unknown; | |
5387 | set_program_space_data (current_program_space, main_progspace_key, | |
5388 | info); | |
5389 | } | |
5390 | ||
5391 | return info; | |
5392 | } | |
5393 | ||
5394 | /* A cleanup to destroy a struct main_info when a progspace is | |
5395 | destroyed. */ | |
5396 | ||
5397 | static void | |
5398 | main_info_cleanup (struct program_space *pspace, void *data) | |
5399 | { | |
19ba03f4 | 5400 | struct main_info *info = (struct main_info *) data; |
32ac0d11 TT |
5401 | |
5402 | if (info != NULL) | |
5403 | xfree (info->name_of_main); | |
5404 | xfree (info); | |
5405 | } | |
51cc5b07 | 5406 | |
3d548a53 | 5407 | static void |
9e6c82ad | 5408 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5409 | { |
32ac0d11 TT |
5410 | struct main_info *info = get_main_info (); |
5411 | ||
5412 | if (info->name_of_main != NULL) | |
51cc5b07 | 5413 | { |
32ac0d11 TT |
5414 | xfree (info->name_of_main); |
5415 | info->name_of_main = NULL; | |
5416 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5417 | } |
5418 | if (name != NULL) | |
5419 | { | |
32ac0d11 TT |
5420 | info->name_of_main = xstrdup (name); |
5421 | info->language_of_main = lang; | |
51cc5b07 AC |
5422 | } |
5423 | } | |
5424 | ||
ea53e89f JB |
5425 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5426 | accordingly. */ | |
5427 | ||
5428 | static void | |
5429 | find_main_name (void) | |
5430 | { | |
cd6c7346 | 5431 | const char *new_main_name; |
3d548a53 TT |
5432 | struct objfile *objfile; |
5433 | ||
5434 | /* First check the objfiles to see whether a debuginfo reader has | |
5435 | picked up the appropriate main name. Historically the main name | |
5436 | was found in a more or less random way; this approach instead | |
5437 | relies on the order of objfile creation -- which still isn't | |
5438 | guaranteed to get the correct answer, but is just probably more | |
5439 | accurate. */ | |
5440 | ALL_OBJFILES (objfile) | |
5441 | { | |
5442 | if (objfile->per_bfd->name_of_main != NULL) | |
5443 | { | |
5444 | set_main_name (objfile->per_bfd->name_of_main, | |
5445 | objfile->per_bfd->language_of_main); | |
5446 | return; | |
5447 | } | |
5448 | } | |
ea53e89f JB |
5449 | |
5450 | /* Try to see if the main procedure is in Ada. */ | |
5451 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5452 | be to add a new method in the language vector, and call this | |
5453 | method for each language until one of them returns a non-empty | |
5454 | name. This would allow us to remove this hard-coded call to | |
5455 | an Ada function. It is not clear that this is a better approach | |
5456 | at this point, because all methods need to be written in a way | |
c378eb4e | 5457 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5458 | important that a method does not return a wrong name for the main |
5459 | procedure if the main procedure is actually written in a different | |
5460 | language. It is easy to guaranty this with Ada, since we use a | |
5461 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5462 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5463 | be guarantied for languages such as C, for instance. This suggests |
5464 | that order of call for these methods becomes important, which means | |
5465 | a more complicated approach. */ | |
5466 | new_main_name = ada_main_name (); | |
5467 | if (new_main_name != NULL) | |
9af17804 | 5468 | { |
9e6c82ad | 5469 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5470 | return; |
5471 | } | |
5472 | ||
63778547 IB |
5473 | new_main_name = d_main_name (); |
5474 | if (new_main_name != NULL) | |
5475 | { | |
5476 | set_main_name (new_main_name, language_d); | |
5477 | return; | |
5478 | } | |
5479 | ||
a766d390 DE |
5480 | new_main_name = go_main_name (); |
5481 | if (new_main_name != NULL) | |
5482 | { | |
9e6c82ad | 5483 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5484 | return; |
5485 | } | |
5486 | ||
cd6c7346 PM |
5487 | new_main_name = pascal_main_name (); |
5488 | if (new_main_name != NULL) | |
9af17804 | 5489 | { |
9e6c82ad | 5490 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5491 | return; |
5492 | } | |
5493 | ||
ea53e89f JB |
5494 | /* The languages above didn't identify the name of the main procedure. |
5495 | Fallback to "main". */ | |
9e6c82ad | 5496 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5497 | } |
5498 | ||
51cc5b07 AC |
5499 | char * |
5500 | main_name (void) | |
5501 | { | |
32ac0d11 TT |
5502 | struct main_info *info = get_main_info (); |
5503 | ||
5504 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5505 | find_main_name (); |
5506 | ||
32ac0d11 | 5507 | return info->name_of_main; |
51cc5b07 AC |
5508 | } |
5509 | ||
9e6c82ad TT |
5510 | /* Return the language of the main function. If it is not known, |
5511 | return language_unknown. */ | |
5512 | ||
5513 | enum language | |
5514 | main_language (void) | |
5515 | { | |
32ac0d11 TT |
5516 | struct main_info *info = get_main_info (); |
5517 | ||
5518 | if (info->name_of_main == NULL) | |
5519 | find_main_name (); | |
5520 | ||
5521 | return info->language_of_main; | |
9e6c82ad TT |
5522 | } |
5523 | ||
ea53e89f JB |
5524 | /* Handle ``executable_changed'' events for the symtab module. */ |
5525 | ||
5526 | static void | |
781b42b0 | 5527 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5528 | { |
5529 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5530 | set_main_name (NULL, language_unknown); |
ea53e89f | 5531 | } |
51cc5b07 | 5532 | |
a6c727b2 DJ |
5533 | /* Return 1 if the supplied producer string matches the ARM RealView |
5534 | compiler (armcc). */ | |
5535 | ||
5536 | int | |
5537 | producer_is_realview (const char *producer) | |
5538 | { | |
5539 | static const char *const arm_idents[] = { | |
5540 | "ARM C Compiler, ADS", | |
5541 | "Thumb C Compiler, ADS", | |
5542 | "ARM C++ Compiler, ADS", | |
5543 | "Thumb C++ Compiler, ADS", | |
5544 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5545 | "ARM C/C++ Compiler, RVCT" | |
5546 | }; | |
5547 | int i; | |
5548 | ||
5549 | if (producer == NULL) | |
5550 | return 0; | |
5551 | ||
5552 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
61012eef | 5553 | if (startswith (producer, arm_idents[i])) |
a6c727b2 DJ |
5554 | return 1; |
5555 | ||
5556 | return 0; | |
5557 | } | |
ed0616c6 | 5558 | |
f1e6e072 TT |
5559 | \f |
5560 | ||
5561 | /* The next index to hand out in response to a registration request. */ | |
5562 | ||
5563 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5564 | ||
5565 | /* The maximum number of "aclass" registrations we support. This is | |
5566 | constant for convenience. */ | |
5567 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5568 | ||
5569 | /* The objects representing the various "aclass" values. The elements | |
5570 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5571 | elements are those registered at gdb initialization time. */ | |
5572 | ||
5573 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5574 | ||
5575 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5576 | so that it can be const. */ | |
5577 | ||
5578 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5579 | ||
5580 | /* Make sure we saved enough room in struct symbol. */ | |
5581 | ||
5582 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5583 | ||
5584 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5585 | is the ops vector associated with this index. This returns the new | |
5586 | index, which should be used as the aclass_index field for symbols | |
5587 | of this type. */ | |
5588 | ||
5589 | int | |
5590 | register_symbol_computed_impl (enum address_class aclass, | |
5591 | const struct symbol_computed_ops *ops) | |
5592 | { | |
5593 | int result = next_aclass_value++; | |
5594 | ||
5595 | gdb_assert (aclass == LOC_COMPUTED); | |
5596 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5597 | symbol_impl[result].aclass = aclass; | |
5598 | symbol_impl[result].ops_computed = ops; | |
5599 | ||
24d6c2a0 TT |
5600 | /* Sanity check OPS. */ |
5601 | gdb_assert (ops != NULL); | |
5602 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
5603 | gdb_assert (ops->describe_location != NULL); | |
0b31a4bc | 5604 | gdb_assert (ops->get_symbol_read_needs != NULL); |
24d6c2a0 TT |
5605 | gdb_assert (ops->read_variable != NULL); |
5606 | ||
f1e6e072 TT |
5607 | return result; |
5608 | } | |
5609 | ||
5610 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
5611 | OPS is the ops vector associated with this index. This returns the | |
5612 | new index, which should be used as the aclass_index field for symbols | |
5613 | of this type. */ | |
5614 | ||
5615 | int | |
5616 | register_symbol_block_impl (enum address_class aclass, | |
5617 | const struct symbol_block_ops *ops) | |
5618 | { | |
5619 | int result = next_aclass_value++; | |
5620 | ||
5621 | gdb_assert (aclass == LOC_BLOCK); | |
5622 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5623 | symbol_impl[result].aclass = aclass; | |
5624 | symbol_impl[result].ops_block = ops; | |
5625 | ||
5626 | /* Sanity check OPS. */ | |
5627 | gdb_assert (ops != NULL); | |
5628 | gdb_assert (ops->find_frame_base_location != NULL); | |
5629 | ||
5630 | return result; | |
5631 | } | |
5632 | ||
5633 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
5634 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
5635 | this index. This returns the new index, which should be used as | |
5636 | the aclass_index field for symbols of this type. */ | |
5637 | ||
5638 | int | |
5639 | register_symbol_register_impl (enum address_class aclass, | |
5640 | const struct symbol_register_ops *ops) | |
5641 | { | |
5642 | int result = next_aclass_value++; | |
5643 | ||
5644 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
5645 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5646 | symbol_impl[result].aclass = aclass; | |
5647 | symbol_impl[result].ops_register = ops; | |
5648 | ||
5649 | return result; | |
5650 | } | |
5651 | ||
5652 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
5653 | address_class. */ | |
5654 | ||
5655 | static void | |
5656 | initialize_ordinary_address_classes (void) | |
5657 | { | |
5658 | int i; | |
5659 | ||
5660 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
aead7601 | 5661 | symbol_impl[i].aclass = (enum address_class) i; |
f1e6e072 TT |
5662 | } |
5663 | ||
5664 | \f | |
5665 | ||
1994afbf DE |
5666 | /* Helper function to initialize the fields of an objfile-owned symbol. |
5667 | It assumed that *SYM is already all zeroes. */ | |
5668 | ||
5669 | static void | |
5670 | initialize_objfile_symbol_1 (struct symbol *sym) | |
5671 | { | |
5672 | SYMBOL_OBJFILE_OWNED (sym) = 1; | |
5673 | SYMBOL_SECTION (sym) = -1; | |
5674 | } | |
5675 | ||
5676 | /* Initialize the symbol SYM, and mark it as being owned by an objfile. */ | |
e623cf5d TT |
5677 | |
5678 | void | |
38bf1463 | 5679 | initialize_objfile_symbol (struct symbol *sym) |
e623cf5d TT |
5680 | { |
5681 | memset (sym, 0, sizeof (*sym)); | |
1994afbf | 5682 | initialize_objfile_symbol_1 (sym); |
e623cf5d TT |
5683 | } |
5684 | ||
5685 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
5686 | obstack. */ | |
5687 | ||
5688 | struct symbol * | |
5689 | allocate_symbol (struct objfile *objfile) | |
5690 | { | |
5691 | struct symbol *result; | |
5692 | ||
5693 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
1994afbf | 5694 | initialize_objfile_symbol_1 (result); |
e623cf5d TT |
5695 | |
5696 | return result; | |
5697 | } | |
5698 | ||
5699 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
5700 | obstack. */ | |
5701 | ||
5702 | struct template_symbol * | |
5703 | allocate_template_symbol (struct objfile *objfile) | |
5704 | { | |
5705 | struct template_symbol *result; | |
5706 | ||
5707 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
1994afbf | 5708 | initialize_objfile_symbol_1 (&result->base); |
e623cf5d TT |
5709 | |
5710 | return result; | |
5711 | } | |
5712 | ||
08be3fe3 DE |
5713 | /* See symtab.h. */ |
5714 | ||
5715 | struct objfile * | |
5716 | symbol_objfile (const struct symbol *symbol) | |
5717 | { | |
1994afbf DE |
5718 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5719 | return SYMTAB_OBJFILE (symbol->owner.symtab); | |
08be3fe3 DE |
5720 | } |
5721 | ||
5722 | /* See symtab.h. */ | |
5723 | ||
5724 | struct gdbarch * | |
5725 | symbol_arch (const struct symbol *symbol) | |
5726 | { | |
1994afbf DE |
5727 | if (!SYMBOL_OBJFILE_OWNED (symbol)) |
5728 | return symbol->owner.arch; | |
5729 | return get_objfile_arch (SYMTAB_OBJFILE (symbol->owner.symtab)); | |
08be3fe3 DE |
5730 | } |
5731 | ||
5732 | /* See symtab.h. */ | |
5733 | ||
5734 | struct symtab * | |
5735 | symbol_symtab (const struct symbol *symbol) | |
5736 | { | |
1994afbf DE |
5737 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5738 | return symbol->owner.symtab; | |
08be3fe3 DE |
5739 | } |
5740 | ||
5741 | /* See symtab.h. */ | |
5742 | ||
5743 | void | |
5744 | symbol_set_symtab (struct symbol *symbol, struct symtab *symtab) | |
5745 | { | |
1994afbf DE |
5746 | gdb_assert (SYMBOL_OBJFILE_OWNED (symbol)); |
5747 | symbol->owner.symtab = symtab; | |
08be3fe3 DE |
5748 | } |
5749 | ||
e623cf5d TT |
5750 | \f |
5751 | ||
c906108c | 5752 | void |
fba45db2 | 5753 | _initialize_symtab (void) |
c906108c | 5754 | { |
f1e6e072 TT |
5755 | initialize_ordinary_address_classes (); |
5756 | ||
32ac0d11 TT |
5757 | main_progspace_key |
5758 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
5759 | ||
f57d2163 DE |
5760 | symbol_cache_key |
5761 | = register_program_space_data_with_cleanup (NULL, symbol_cache_cleanup); | |
5762 | ||
11db9430 | 5763 | add_info ("variables", info_variables_command, _("\ |
1bedd215 | 5764 | All global and static variable names, or those matching REGEXP.")); |
c906108c | 5765 | if (dbx_commands) |
11db9430 | 5766 | add_com ("whereis", class_info, info_variables_command, _("\ |
1bedd215 | 5767 | All global and static variable names, or those matching REGEXP.")); |
c906108c | 5768 | |
11db9430 | 5769 | add_info ("functions", info_functions_command, |
1bedd215 | 5770 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
5771 | |
5772 | /* FIXME: This command has at least the following problems: | |
5773 | 1. It prints builtin types (in a very strange and confusing fashion). | |
5774 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
5775 | typedef struct foo *FOO |
5776 | type_print prints "FOO" when we want to make it (in this situation) | |
5777 | print "struct foo *". | |
c906108c SS |
5778 | I also think "ptype" or "whatis" is more likely to be useful (but if |
5779 | there is much disagreement "info types" can be fixed). */ | |
11db9430 | 5780 | add_info ("types", info_types_command, |
1bedd215 | 5781 | _("All type names, or those matching REGEXP.")); |
c906108c | 5782 | |
11db9430 | 5783 | add_info ("sources", info_sources_command, |
1bedd215 | 5784 | _("Source files in the program.")); |
c906108c SS |
5785 | |
5786 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 5787 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c | 5788 | |
717d2f5a JB |
5789 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
5790 | multiple_symbols_modes, &multiple_symbols_mode, | |
5791 | _("\ | |
5792 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
5793 | in an expression."), _("\ | |
5794 | Show how the debugger handles ambiguities in expressions."), _("\ | |
5795 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
5796 | NULL, NULL, &setlist, &showlist); | |
5797 | ||
c011a4f4 DE |
5798 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
5799 | &basenames_may_differ, _("\ | |
5800 | Set whether a source file may have multiple base names."), _("\ | |
5801 | Show whether a source file may have multiple base names."), _("\ | |
5802 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
5803 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
5804 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
5805 | before comparing them. Canonicalization is an expensive operation,\n\ | |
5806 | but it allows the same file be known by more than one base name.\n\ | |
5807 | If not set (the default), all source files are assumed to have just\n\ | |
5808 | one base name, and gdb will do file name comparisons more efficiently."), | |
5809 | NULL, NULL, | |
5810 | &setlist, &showlist); | |
5811 | ||
db0fec5c DE |
5812 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
5813 | _("Set debugging of symbol table creation."), | |
5814 | _("Show debugging of symbol table creation."), _("\ | |
5815 | When enabled (non-zero), debugging messages are printed when building\n\ | |
5816 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
5817 | A value greater than 1 provides more verbose information."), | |
5818 | NULL, | |
5819 | NULL, | |
5820 | &setdebuglist, &showdebuglist); | |
45cfd468 | 5821 | |
cc485e62 DE |
5822 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
5823 | _("\ | |
5824 | Set debugging of symbol lookup."), _("\ | |
5825 | Show debugging of symbol lookup."), _("\ | |
5826 | When enabled (non-zero), symbol lookups are logged."), | |
5827 | NULL, NULL, | |
5828 | &setdebuglist, &showdebuglist); | |
5829 | ||
f57d2163 DE |
5830 | add_setshow_zuinteger_cmd ("symbol-cache-size", no_class, |
5831 | &new_symbol_cache_size, | |
5832 | _("Set the size of the symbol cache."), | |
5833 | _("Show the size of the symbol cache."), _("\ | |
5834 | The size of the symbol cache.\n\ | |
5835 | If zero then the symbol cache is disabled."), | |
5836 | set_symbol_cache_size_handler, NULL, | |
5837 | &maintenance_set_cmdlist, | |
5838 | &maintenance_show_cmdlist); | |
5839 | ||
5840 | add_cmd ("symbol-cache", class_maintenance, maintenance_print_symbol_cache, | |
5841 | _("Dump the symbol cache for each program space."), | |
5842 | &maintenanceprintlist); | |
5843 | ||
5844 | add_cmd ("symbol-cache-statistics", class_maintenance, | |
5845 | maintenance_print_symbol_cache_statistics, | |
5846 | _("Print symbol cache statistics for each program space."), | |
5847 | &maintenanceprintlist); | |
5848 | ||
5849 | add_cmd ("flush-symbol-cache", class_maintenance, | |
5850 | maintenance_flush_symbol_cache, | |
5851 | _("Flush the symbol cache for each program space."), | |
5852 | &maintenancelist); | |
5853 | ||
ea53e89f | 5854 | observer_attach_executable_changed (symtab_observer_executable_changed); |
f57d2163 DE |
5855 | observer_attach_new_objfile (symtab_new_objfile_observer); |
5856 | observer_attach_free_objfile (symtab_free_objfile_observer); | |
c906108c | 5857 | } |