Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 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" |
c906108c | 44 | |
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" |
ccefe4c4 | 63 | |
ff6c39cf | 64 | /* Forward declarations for local functions. */ |
c906108c | 65 | |
a14ed312 | 66 | static void rbreak_command (char *, int); |
c906108c | 67 | |
f8eba3c6 | 68 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 69 | |
3121eff0 | 70 | static struct symbol *lookup_symbol_aux (const char *name, |
3121eff0 | 71 | const struct block *block, |
176620f1 | 72 | const domain_enum domain, |
53c5240f | 73 | enum language language, |
cf901d3b | 74 | struct field_of_this_result *); |
fba7f19c | 75 | |
e4051eeb | 76 | static |
74016e12 DE |
77 | struct symbol *lookup_local_symbol (const char *name, |
78 | const struct block *block, | |
79 | const domain_enum domain, | |
80 | enum language language); | |
8155455b | 81 | |
6c1c7be3 | 82 | static struct symbol * |
fe2a438d DE |
83 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, |
84 | const char *name, const domain_enum domain); | |
c906108c | 85 | |
ff6c39cf | 86 | extern initialize_file_ftype _initialize_symtab; |
c906108c | 87 | |
32ac0d11 TT |
88 | /* Program space key for finding name and language of "main". */ |
89 | ||
90 | static const struct program_space_data *main_progspace_key; | |
91 | ||
92 | /* Type of the data stored on the program space. */ | |
93 | ||
94 | struct main_info | |
95 | { | |
96 | /* Name of "main". */ | |
97 | ||
98 | char *name_of_main; | |
99 | ||
100 | /* Language of "main". */ | |
101 | ||
102 | enum language language_of_main; | |
103 | }; | |
104 | ||
45cfd468 | 105 | /* When non-zero, print debugging messages related to symtab creation. */ |
db0fec5c | 106 | unsigned int symtab_create_debug = 0; |
45cfd468 | 107 | |
cc485e62 DE |
108 | /* When non-zero, print debugging messages related to symbol lookup. */ |
109 | unsigned int symbol_lookup_debug = 0; | |
110 | ||
c011a4f4 DE |
111 | /* Non-zero if a file may be known by two different basenames. |
112 | This is the uncommon case, and significantly slows down gdb. | |
113 | Default set to "off" to not slow down the common case. */ | |
114 | int basenames_may_differ = 0; | |
115 | ||
717d2f5a JB |
116 | /* Allow the user to configure the debugger behavior with respect |
117 | to multiple-choice menus when more than one symbol matches during | |
118 | a symbol lookup. */ | |
119 | ||
7fc830e2 MK |
120 | const char multiple_symbols_ask[] = "ask"; |
121 | const char multiple_symbols_all[] = "all"; | |
122 | const char multiple_symbols_cancel[] = "cancel"; | |
40478521 | 123 | static const char *const multiple_symbols_modes[] = |
717d2f5a JB |
124 | { |
125 | multiple_symbols_ask, | |
126 | multiple_symbols_all, | |
127 | multiple_symbols_cancel, | |
128 | NULL | |
129 | }; | |
130 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
131 | ||
132 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
133 | ||
134 | const char * | |
135 | multiple_symbols_select_mode (void) | |
136 | { | |
137 | return multiple_symbols_mode; | |
138 | } | |
139 | ||
c906108c | 140 | /* Block in which the most recently searched-for symbol was found. |
9af17804 | 141 | Might be better to make this a parameter to lookup_symbol and |
c378eb4e | 142 | value_of_this. */ |
c906108c SS |
143 | |
144 | const struct block *block_found; | |
145 | ||
20c681d1 DE |
146 | /* Return the name of a domain_enum. */ |
147 | ||
148 | const char * | |
149 | domain_name (domain_enum e) | |
150 | { | |
151 | switch (e) | |
152 | { | |
153 | case UNDEF_DOMAIN: return "UNDEF_DOMAIN"; | |
154 | case VAR_DOMAIN: return "VAR_DOMAIN"; | |
155 | case STRUCT_DOMAIN: return "STRUCT_DOMAIN"; | |
540feddf | 156 | case MODULE_DOMAIN: return "MODULE_DOMAIN"; |
20c681d1 DE |
157 | case LABEL_DOMAIN: return "LABEL_DOMAIN"; |
158 | case COMMON_BLOCK_DOMAIN: return "COMMON_BLOCK_DOMAIN"; | |
159 | default: gdb_assert_not_reached ("bad domain_enum"); | |
160 | } | |
161 | } | |
162 | ||
163 | /* Return the name of a search_domain . */ | |
164 | ||
165 | const char * | |
166 | search_domain_name (enum search_domain e) | |
167 | { | |
168 | switch (e) | |
169 | { | |
170 | case VARIABLES_DOMAIN: return "VARIABLES_DOMAIN"; | |
171 | case FUNCTIONS_DOMAIN: return "FUNCTIONS_DOMAIN"; | |
172 | case TYPES_DOMAIN: return "TYPES_DOMAIN"; | |
173 | case ALL_DOMAIN: return "ALL_DOMAIN"; | |
174 | default: gdb_assert_not_reached ("bad search_domain"); | |
175 | } | |
176 | } | |
177 | ||
43f3e411 | 178 | /* See symtab.h. */ |
db0fec5c | 179 | |
43f3e411 DE |
180 | struct symtab * |
181 | compunit_primary_filetab (const struct compunit_symtab *cust) | |
db0fec5c | 182 | { |
43f3e411 | 183 | gdb_assert (COMPUNIT_FILETABS (cust) != NULL); |
db0fec5c | 184 | |
43f3e411 DE |
185 | /* The primary file symtab is the first one in the list. */ |
186 | return COMPUNIT_FILETABS (cust); | |
187 | } | |
188 | ||
189 | /* See symtab.h. */ | |
190 | ||
191 | enum language | |
192 | compunit_language (const struct compunit_symtab *cust) | |
193 | { | |
194 | struct symtab *symtab = compunit_primary_filetab (cust); | |
195 | ||
196 | /* The language of the compunit symtab is the language of its primary | |
197 | source file. */ | |
198 | return SYMTAB_LANGUAGE (symtab); | |
db0fec5c DE |
199 | } |
200 | ||
4aac40c8 TT |
201 | /* See whether FILENAME matches SEARCH_NAME using the rule that we |
202 | advertise to the user. (The manual's description of linespecs | |
af529f8f JK |
203 | describes what we advertise). Returns true if they match, false |
204 | otherwise. */ | |
4aac40c8 TT |
205 | |
206 | int | |
b57a636e | 207 | compare_filenames_for_search (const char *filename, const char *search_name) |
4aac40c8 TT |
208 | { |
209 | int len = strlen (filename); | |
b57a636e | 210 | size_t search_len = strlen (search_name); |
4aac40c8 TT |
211 | |
212 | if (len < search_len) | |
213 | return 0; | |
214 | ||
215 | /* The tail of FILENAME must match. */ | |
216 | if (FILENAME_CMP (filename + len - search_len, search_name) != 0) | |
217 | return 0; | |
218 | ||
219 | /* Either the names must completely match, or the character | |
220 | preceding the trailing SEARCH_NAME segment of FILENAME must be a | |
d84fca2c JK |
221 | directory separator. |
222 | ||
af529f8f JK |
223 | The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c" |
224 | cannot match FILENAME "/path//dir/file.c" - as user has requested | |
225 | absolute path. The sama applies for "c:\file.c" possibly | |
226 | incorrectly hypothetically matching "d:\dir\c:\file.c". | |
227 | ||
d84fca2c JK |
228 | The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c" |
229 | compatible with SEARCH_NAME "file.c". In such case a compiler had | |
230 | to put the "c:file.c" name into debug info. Such compatibility | |
231 | works only on GDB built for DOS host. */ | |
4aac40c8 | 232 | return (len == search_len |
af529f8f JK |
233 | || (!IS_ABSOLUTE_PATH (search_name) |
234 | && IS_DIR_SEPARATOR (filename[len - search_len - 1])) | |
4aac40c8 TT |
235 | || (HAS_DRIVE_SPEC (filename) |
236 | && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len])); | |
237 | } | |
238 | ||
f8eba3c6 TT |
239 | /* Check for a symtab of a specific name by searching some symtabs. |
240 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 241 | |
b2d23133 DE |
242 | If NAME is not absolute, then REAL_PATH is NULL |
243 | If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME. | |
244 | ||
f5b95b50 | 245 | The return value, NAME, REAL_PATH, CALLBACK, and DATA |
f8eba3c6 TT |
246 | are identical to the `map_symtabs_matching_filename' method of |
247 | quick_symbol_functions. | |
248 | ||
43f3e411 DE |
249 | FIRST and AFTER_LAST indicate the range of compunit symtabs to search. |
250 | Each symtab within the specified compunit symtab is also searched. | |
251 | AFTER_LAST is one past the last compunit symtab to search; NULL means to | |
f8eba3c6 TT |
252 | search until the end of the list. */ |
253 | ||
254 | int | |
255 | iterate_over_some_symtabs (const char *name, | |
f8eba3c6 TT |
256 | const char *real_path, |
257 | int (*callback) (struct symtab *symtab, | |
258 | void *data), | |
259 | void *data, | |
43f3e411 DE |
260 | struct compunit_symtab *first, |
261 | struct compunit_symtab *after_last) | |
c906108c | 262 | { |
43f3e411 DE |
263 | struct compunit_symtab *cust; |
264 | struct symtab *s; | |
c011a4f4 | 265 | const char* base_name = lbasename (name); |
1f84b619 | 266 | |
43f3e411 | 267 | for (cust = first; cust != NULL && cust != after_last; cust = cust->next) |
f079a2e5 | 268 | { |
43f3e411 | 269 | ALL_COMPUNIT_FILETABS (cust, s) |
a94e8645 | 270 | { |
43f3e411 DE |
271 | if (compare_filenames_for_search (s->filename, name)) |
272 | { | |
273 | if (callback (s, data)) | |
274 | return 1; | |
275 | continue; | |
276 | } | |
a94e8645 | 277 | |
43f3e411 DE |
278 | /* Before we invoke realpath, which can get expensive when many |
279 | files are involved, do a quick comparison of the basenames. */ | |
280 | if (! basenames_may_differ | |
281 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
282 | continue; | |
a94e8645 | 283 | |
43f3e411 | 284 | if (compare_filenames_for_search (symtab_to_fullname (s), name)) |
a94e8645 DE |
285 | { |
286 | if (callback (s, data)) | |
287 | return 1; | |
288 | continue; | |
289 | } | |
43f3e411 DE |
290 | |
291 | /* If the user gave us an absolute path, try to find the file in | |
292 | this symtab and use its absolute path. */ | |
293 | if (real_path != NULL) | |
294 | { | |
295 | const char *fullname = symtab_to_fullname (s); | |
296 | ||
297 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); | |
298 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
299 | if (FILENAME_CMP (real_path, fullname) == 0) | |
300 | { | |
301 | if (callback (s, data)) | |
302 | return 1; | |
303 | continue; | |
304 | } | |
305 | } | |
a94e8645 | 306 | } |
f8eba3c6 | 307 | } |
58d370e0 | 308 | |
f8eba3c6 TT |
309 | return 0; |
310 | } | |
311 | ||
312 | /* Check for a symtab of a specific name; first in symtabs, then in | |
313 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
314 | in the symtab filename will also work. | |
315 | ||
316 | Calls CALLBACK with each symtab that is found and with the supplied | |
317 | DATA. If CALLBACK returns true, the search stops. */ | |
318 | ||
319 | void | |
320 | iterate_over_symtabs (const char *name, | |
321 | int (*callback) (struct symtab *symtab, | |
322 | void *data), | |
323 | void *data) | |
324 | { | |
f8eba3c6 TT |
325 | struct objfile *objfile; |
326 | char *real_path = NULL; | |
f8eba3c6 TT |
327 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
328 | ||
329 | /* Here we are interested in canonicalizing an absolute path, not | |
330 | absolutizing a relative path. */ | |
331 | if (IS_ABSOLUTE_PATH (name)) | |
332 | { | |
f8eba3c6 TT |
333 | real_path = gdb_realpath (name); |
334 | make_cleanup (xfree, real_path); | |
af529f8f | 335 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
f8eba3c6 TT |
336 | } |
337 | ||
338 | ALL_OBJFILES (objfile) | |
339 | { | |
f5b95b50 | 340 | if (iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 341 | objfile->compunit_symtabs, NULL)) |
f8eba3c6 TT |
342 | { |
343 | do_cleanups (cleanups); | |
344 | return; | |
345 | } | |
346 | } | |
347 | ||
c906108c SS |
348 | /* Same search rules as above apply here, but now we look thru the |
349 | psymtabs. */ | |
350 | ||
ccefe4c4 TT |
351 | ALL_OBJFILES (objfile) |
352 | { | |
353 | if (objfile->sf | |
f8eba3c6 TT |
354 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, |
355 | name, | |
f8eba3c6 TT |
356 | real_path, |
357 | callback, | |
358 | data)) | |
ccefe4c4 | 359 | { |
f8eba3c6 TT |
360 | do_cleanups (cleanups); |
361 | return; | |
ccefe4c4 TT |
362 | } |
363 | } | |
c906108c | 364 | |
f8eba3c6 TT |
365 | do_cleanups (cleanups); |
366 | } | |
367 | ||
368 | /* The callback function used by lookup_symtab. */ | |
369 | ||
370 | static int | |
371 | lookup_symtab_callback (struct symtab *symtab, void *data) | |
372 | { | |
373 | struct symtab **result_ptr = data; | |
c906108c | 374 | |
f8eba3c6 TT |
375 | *result_ptr = symtab; |
376 | return 1; | |
c906108c | 377 | } |
f8eba3c6 TT |
378 | |
379 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
380 | symtab, or NULL. */ | |
381 | ||
382 | struct symtab * | |
383 | lookup_symtab (const char *name) | |
384 | { | |
385 | struct symtab *result = NULL; | |
386 | ||
387 | iterate_over_symtabs (name, lookup_symtab_callback, &result); | |
388 | return result; | |
389 | } | |
390 | ||
c906108c SS |
391 | \f |
392 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
393 | full method name, which consist of the class name (from T), the unadorned | |
394 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 395 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
396 | |
397 | char * | |
fba45db2 | 398 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
399 | { |
400 | int mangled_name_len; | |
401 | char *mangled_name; | |
402 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
403 | struct fn_field *method = &f[signature_id]; | |
0d5cff50 | 404 | const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
1d06ead6 | 405 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
0d5cff50 | 406 | const char *newname = type_name_no_tag (type); |
c906108c SS |
407 | |
408 | /* Does the form of physname indicate that it is the full mangled name | |
409 | of a constructor (not just the args)? */ | |
410 | int is_full_physname_constructor; | |
411 | ||
412 | int is_constructor; | |
015a42b4 | 413 | int is_destructor = is_destructor_name (physname); |
c906108c SS |
414 | /* Need a new type prefix. */ |
415 | char *const_prefix = method->is_const ? "C" : ""; | |
416 | char *volatile_prefix = method->is_volatile ? "V" : ""; | |
417 | char buf[20]; | |
418 | int len = (newname == NULL ? 0 : strlen (newname)); | |
419 | ||
43630227 PS |
420 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
421 | or an operator name. */ | |
422 | if ((physname[0] == '_' && physname[1] == 'Z') | |
423 | || is_operator_name (field_name)) | |
235d1e03 EZ |
424 | return xstrdup (physname); |
425 | ||
015a42b4 | 426 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 427 | |
3e43a32a MS |
428 | is_constructor = is_full_physname_constructor |
429 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
430 | |
431 | if (!is_destructor) | |
c5aa993b | 432 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
c906108c SS |
433 | |
434 | if (is_destructor || is_full_physname_constructor) | |
435 | { | |
c5aa993b JM |
436 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
437 | strcpy (mangled_name, physname); | |
c906108c SS |
438 | return mangled_name; |
439 | } | |
440 | ||
441 | if (len == 0) | |
442 | { | |
8c042590 | 443 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
444 | } |
445 | else if (physname[0] == 't' || physname[0] == 'Q') | |
446 | { | |
447 | /* The physname for template and qualified methods already includes | |
c5aa993b | 448 | the class name. */ |
8c042590 | 449 | xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix); |
c906108c SS |
450 | newname = NULL; |
451 | len = 0; | |
452 | } | |
453 | else | |
454 | { | |
8c042590 PM |
455 | xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix, |
456 | volatile_prefix, len); | |
c906108c SS |
457 | } |
458 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 459 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 460 | |
433759f7 MS |
461 | mangled_name = (char *) xmalloc (mangled_name_len); |
462 | if (is_constructor) | |
463 | mangled_name[0] = '\0'; | |
464 | else | |
465 | strcpy (mangled_name, field_name); | |
466 | ||
c906108c SS |
467 | strcat (mangled_name, buf); |
468 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
469 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 470 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
471 | if (newname != NULL) |
472 | strcat (mangled_name, newname); | |
473 | ||
474 | strcat (mangled_name, physname); | |
475 | return (mangled_name); | |
476 | } | |
12af6855 | 477 | |
b250c185 | 478 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
7c5fdd25 | 479 | correctly allocated. */ |
eca864fe | 480 | |
b250c185 SW |
481 | void |
482 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
cfc594ee | 483 | const char *name, |
ccde22c0 | 484 | struct obstack *obstack) |
b250c185 | 485 | { |
7c5fdd25 | 486 | if (gsymbol->language == language_ada) |
f85f34ed TT |
487 | { |
488 | if (name == NULL) | |
489 | { | |
490 | gsymbol->ada_mangled = 0; | |
491 | gsymbol->language_specific.obstack = obstack; | |
492 | } | |
493 | else | |
494 | { | |
495 | gsymbol->ada_mangled = 1; | |
496 | gsymbol->language_specific.mangled_lang.demangled_name = name; | |
497 | } | |
498 | } | |
29df156d SW |
499 | else |
500 | gsymbol->language_specific.mangled_lang.demangled_name = name; | |
b250c185 SW |
501 | } |
502 | ||
503 | /* Return the demangled name of GSYMBOL. */ | |
eca864fe | 504 | |
0d5cff50 | 505 | const char * |
b250c185 SW |
506 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) |
507 | { | |
7c5fdd25 | 508 | if (gsymbol->language == language_ada) |
f85f34ed TT |
509 | { |
510 | if (!gsymbol->ada_mangled) | |
511 | return NULL; | |
512 | /* Fall through. */ | |
513 | } | |
514 | ||
515 | return gsymbol->language_specific.mangled_lang.demangled_name; | |
b250c185 SW |
516 | } |
517 | ||
12af6855 | 518 | \f |
89aad1f9 | 519 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 520 | depending upon the language for the symbol. */ |
eca864fe | 521 | |
89aad1f9 | 522 | void |
33e5013e | 523 | symbol_set_language (struct general_symbol_info *gsymbol, |
f85f34ed TT |
524 | enum language language, |
525 | struct obstack *obstack) | |
89aad1f9 EZ |
526 | { |
527 | gsymbol->language = language; | |
7c5fdd25 DE |
528 | if (gsymbol->language == language_cplus |
529 | || gsymbol->language == language_d | |
a766d390 | 530 | || gsymbol->language == language_go |
5784d15e | 531 | || gsymbol->language == language_java |
f55ee35c JK |
532 | || gsymbol->language == language_objc |
533 | || gsymbol->language == language_fortran) | |
89aad1f9 | 534 | { |
f85f34ed TT |
535 | symbol_set_demangled_name (gsymbol, NULL, obstack); |
536 | } | |
537 | else if (gsymbol->language == language_ada) | |
538 | { | |
539 | gdb_assert (gsymbol->ada_mangled == 0); | |
540 | gsymbol->language_specific.obstack = obstack; | |
89aad1f9 | 541 | } |
89aad1f9 EZ |
542 | else |
543 | { | |
544 | memset (&gsymbol->language_specific, 0, | |
545 | sizeof (gsymbol->language_specific)); | |
546 | } | |
547 | } | |
548 | ||
2de7ced7 DJ |
549 | /* Functions to initialize a symbol's mangled name. */ |
550 | ||
04a679b8 TT |
551 | /* Objects of this type are stored in the demangled name hash table. */ |
552 | struct demangled_name_entry | |
553 | { | |
9d2ceabe | 554 | const char *mangled; |
04a679b8 TT |
555 | char demangled[1]; |
556 | }; | |
557 | ||
558 | /* Hash function for the demangled name hash. */ | |
eca864fe | 559 | |
04a679b8 TT |
560 | static hashval_t |
561 | hash_demangled_name_entry (const void *data) | |
562 | { | |
563 | const struct demangled_name_entry *e = data; | |
433759f7 | 564 | |
04a679b8 TT |
565 | return htab_hash_string (e->mangled); |
566 | } | |
567 | ||
568 | /* Equality function for the demangled name hash. */ | |
eca864fe | 569 | |
04a679b8 TT |
570 | static int |
571 | eq_demangled_name_entry (const void *a, const void *b) | |
572 | { | |
573 | const struct demangled_name_entry *da = a; | |
574 | const struct demangled_name_entry *db = b; | |
433759f7 | 575 | |
04a679b8 TT |
576 | return strcmp (da->mangled, db->mangled) == 0; |
577 | } | |
578 | ||
2de7ced7 DJ |
579 | /* Create the hash table used for demangled names. Each hash entry is |
580 | a pair of strings; one for the mangled name and one for the demangled | |
581 | name. The entry is hashed via just the mangled name. */ | |
582 | ||
583 | static void | |
584 | create_demangled_names_hash (struct objfile *objfile) | |
585 | { | |
586 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 587 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
588 | Choosing a much larger table size wastes memory, and saves only about |
589 | 1% in symbol reading. */ | |
590 | ||
84a1243b | 591 | objfile->per_bfd->demangled_names_hash = htab_create_alloc |
04a679b8 | 592 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 593 | NULL, xcalloc, xfree); |
2de7ced7 | 594 | } |
12af6855 | 595 | |
2de7ced7 | 596 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
597 | language of that symbol. If the language is set to language_auto, |
598 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
599 | then set the language appropriately. The returned name is allocated |
600 | by the demangler and should be xfree'd. */ | |
12af6855 | 601 | |
2de7ced7 DJ |
602 | static char * |
603 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
604 | const char *mangled) | |
12af6855 | 605 | { |
12af6855 JB |
606 | char *demangled = NULL; |
607 | ||
608 | if (gsymbol->language == language_unknown) | |
609 | gsymbol->language = language_auto; | |
1bae87b9 AF |
610 | |
611 | if (gsymbol->language == language_objc | |
612 | || gsymbol->language == language_auto) | |
613 | { | |
614 | demangled = | |
615 | objc_demangle (mangled, 0); | |
616 | if (demangled != NULL) | |
617 | { | |
618 | gsymbol->language = language_objc; | |
619 | return demangled; | |
620 | } | |
621 | } | |
12af6855 JB |
622 | if (gsymbol->language == language_cplus |
623 | || gsymbol->language == language_auto) | |
624 | { | |
625 | demangled = | |
8de20a37 | 626 | gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); |
12af6855 | 627 | if (demangled != NULL) |
2de7ced7 DJ |
628 | { |
629 | gsymbol->language = language_cplus; | |
630 | return demangled; | |
631 | } | |
12af6855 JB |
632 | } |
633 | if (gsymbol->language == language_java) | |
634 | { | |
635 | demangled = | |
8de20a37 TT |
636 | gdb_demangle (mangled, |
637 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); | |
12af6855 | 638 | if (demangled != NULL) |
2de7ced7 DJ |
639 | { |
640 | gsymbol->language = language_java; | |
641 | return demangled; | |
642 | } | |
643 | } | |
6aecb9c2 JB |
644 | if (gsymbol->language == language_d |
645 | || gsymbol->language == language_auto) | |
646 | { | |
647 | demangled = d_demangle(mangled, 0); | |
648 | if (demangled != NULL) | |
649 | { | |
650 | gsymbol->language = language_d; | |
651 | return demangled; | |
652 | } | |
653 | } | |
a766d390 DE |
654 | /* FIXME(dje): Continually adding languages here is clumsy. |
655 | Better to just call la_demangle if !auto, and if auto then call | |
656 | a utility routine that tries successive languages in turn and reports | |
657 | which one it finds. I realize the la_demangle options may be different | |
658 | for different languages but there's already a FIXME for that. */ | |
659 | if (gsymbol->language == language_go | |
660 | || gsymbol->language == language_auto) | |
661 | { | |
662 | demangled = go_demangle (mangled, 0); | |
663 | if (demangled != NULL) | |
664 | { | |
665 | gsymbol->language = language_go; | |
666 | return demangled; | |
667 | } | |
668 | } | |
669 | ||
f55ee35c JK |
670 | /* We could support `gsymbol->language == language_fortran' here to provide |
671 | module namespaces also for inferiors with only minimal symbol table (ELF | |
672 | symbols). Just the mangling standard is not standardized across compilers | |
673 | and there is no DW_AT_producer available for inferiors with only the ELF | |
674 | symbols to check the mangling kind. */ | |
036e93df JB |
675 | |
676 | /* Check for Ada symbols last. See comment below explaining why. */ | |
677 | ||
678 | if (gsymbol->language == language_auto) | |
679 | { | |
680 | const char *demangled = ada_decode (mangled); | |
681 | ||
682 | if (demangled != mangled && demangled != NULL && demangled[0] != '<') | |
683 | { | |
684 | /* Set the gsymbol language to Ada, but still return NULL. | |
685 | Two reasons for that: | |
686 | ||
687 | 1. For Ada, we prefer computing the symbol's decoded name | |
688 | on the fly rather than pre-compute it, in order to save | |
689 | memory (Ada projects are typically very large). | |
690 | ||
691 | 2. There are some areas in the definition of the GNAT | |
692 | encoding where, with a bit of bad luck, we might be able | |
693 | to decode a non-Ada symbol, generating an incorrect | |
694 | demangled name (Eg: names ending with "TB" for instance | |
695 | are identified as task bodies and so stripped from | |
696 | the decoded name returned). | |
697 | ||
698 | Returning NULL, here, helps us get a little bit of | |
699 | the best of both worlds. Because we're last, we should | |
700 | not affect any of the other languages that were able to | |
701 | demangle the symbol before us; we get to correctly tag | |
702 | Ada symbols as such; and even if we incorrectly tagged | |
703 | a non-Ada symbol, which should be rare, any routing | |
704 | through the Ada language should be transparent (Ada | |
705 | tries to behave much like C/C++ with non-Ada symbols). */ | |
706 | gsymbol->language = language_ada; | |
707 | return NULL; | |
708 | } | |
709 | } | |
710 | ||
2de7ced7 DJ |
711 | return NULL; |
712 | } | |
713 | ||
980cae7a | 714 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
715 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
716 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
717 | NUL-terminated, then this function assumes that NAME is already | |
718 | correctly saved (either permanently or with a lifetime tied to the | |
719 | objfile), and it will not be copied. | |
720 | ||
721 | The hash table corresponding to OBJFILE is used, and the memory | |
84a1243b | 722 | comes from the per-BFD storage_obstack. LINKAGE_NAME is copied, |
04a679b8 | 723 | so the pointer can be discarded after calling this function. */ |
2de7ced7 | 724 | |
d2a52b27 DC |
725 | /* We have to be careful when dealing with Java names: when we run |
726 | into a Java minimal symbol, we don't know it's a Java symbol, so it | |
727 | gets demangled as a C++ name. This is unfortunate, but there's not | |
728 | much we can do about it: but when demangling partial symbols and | |
729 | regular symbols, we'd better not reuse the wrong demangled name. | |
730 | (See PR gdb/1039.) We solve this by putting a distinctive prefix | |
731 | on Java names when storing them in the hash table. */ | |
732 | ||
733 | /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I | |
734 | don't mind the Java prefix so much: different languages have | |
735 | different demangling requirements, so it's only natural that we | |
736 | need to keep language data around in our demangling cache. But | |
737 | it's not good that the minimal symbol has the wrong demangled name. | |
738 | Unfortunately, I can't think of any easy solution to that | |
739 | problem. */ | |
740 | ||
741 | #define JAVA_PREFIX "##JAVA$$" | |
742 | #define JAVA_PREFIX_LEN 8 | |
743 | ||
2de7ced7 DJ |
744 | void |
745 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
746 | const char *linkage_name, int len, int copy_name, |
747 | struct objfile *objfile) | |
2de7ced7 | 748 | { |
04a679b8 | 749 | struct demangled_name_entry **slot; |
980cae7a DC |
750 | /* A 0-terminated copy of the linkage name. */ |
751 | const char *linkage_name_copy; | |
d2a52b27 DC |
752 | /* A copy of the linkage name that might have a special Java prefix |
753 | added to it, for use when looking names up in the hash table. */ | |
754 | const char *lookup_name; | |
755 | /* The length of lookup_name. */ | |
756 | int lookup_len; | |
04a679b8 | 757 | struct demangled_name_entry entry; |
84a1243b | 758 | struct objfile_per_bfd_storage *per_bfd = objfile->per_bfd; |
2de7ced7 | 759 | |
b06ead72 JB |
760 | if (gsymbol->language == language_ada) |
761 | { | |
762 | /* In Ada, we do the symbol lookups using the mangled name, so | |
763 | we can save some space by not storing the demangled name. | |
764 | ||
765 | As a side note, we have also observed some overlap between | |
766 | the C++ mangling and Ada mangling, similarly to what has | |
767 | been observed with Java. Because we don't store the demangled | |
768 | name with the symbol, we don't need to use the same trick | |
769 | as Java. */ | |
04a679b8 | 770 | if (!copy_name) |
0d5cff50 | 771 | gsymbol->name = linkage_name; |
04a679b8 TT |
772 | else |
773 | { | |
84a1243b | 774 | char *name = obstack_alloc (&per_bfd->storage_obstack, len + 1); |
0d5cff50 DE |
775 | |
776 | memcpy (name, linkage_name, len); | |
777 | name[len] = '\0'; | |
778 | gsymbol->name = name; | |
04a679b8 | 779 | } |
84a1243b | 780 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
b06ead72 JB |
781 | |
782 | return; | |
783 | } | |
784 | ||
84a1243b | 785 | if (per_bfd->demangled_names_hash == NULL) |
04a679b8 TT |
786 | create_demangled_names_hash (objfile); |
787 | ||
980cae7a DC |
788 | /* The stabs reader generally provides names that are not |
789 | NUL-terminated; most of the other readers don't do this, so we | |
d2a52b27 DC |
790 | can just use the given copy, unless we're in the Java case. */ |
791 | if (gsymbol->language == language_java) | |
792 | { | |
793 | char *alloc_name; | |
d2a52b27 | 794 | |
433759f7 | 795 | lookup_len = len + JAVA_PREFIX_LEN; |
d2a52b27 DC |
796 | alloc_name = alloca (lookup_len + 1); |
797 | memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN); | |
798 | memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len); | |
799 | alloc_name[lookup_len] = '\0'; | |
800 | ||
801 | lookup_name = alloc_name; | |
802 | linkage_name_copy = alloc_name + JAVA_PREFIX_LEN; | |
803 | } | |
804 | else if (linkage_name[len] != '\0') | |
2de7ced7 | 805 | { |
980cae7a DC |
806 | char *alloc_name; |
807 | ||
433759f7 | 808 | lookup_len = len; |
d2a52b27 | 809 | alloc_name = alloca (lookup_len + 1); |
980cae7a | 810 | memcpy (alloc_name, linkage_name, len); |
d2a52b27 | 811 | alloc_name[lookup_len] = '\0'; |
980cae7a | 812 | |
d2a52b27 | 813 | lookup_name = alloc_name; |
980cae7a | 814 | linkage_name_copy = alloc_name; |
2de7ced7 DJ |
815 | } |
816 | else | |
980cae7a | 817 | { |
d2a52b27 DC |
818 | lookup_len = len; |
819 | lookup_name = linkage_name; | |
980cae7a DC |
820 | linkage_name_copy = linkage_name; |
821 | } | |
2de7ced7 | 822 | |
9d2ceabe | 823 | entry.mangled = lookup_name; |
04a679b8 | 824 | slot = ((struct demangled_name_entry **) |
84a1243b | 825 | htab_find_slot (per_bfd->demangled_names_hash, |
04a679b8 | 826 | &entry, INSERT)); |
2de7ced7 DJ |
827 | |
828 | /* If this name is not in the hash table, add it. */ | |
a766d390 DE |
829 | if (*slot == NULL |
830 | /* A C version of the symbol may have already snuck into the table. | |
831 | This happens to, e.g., main.init (__go_init_main). Cope. */ | |
832 | || (gsymbol->language == language_go | |
833 | && (*slot)->demangled[0] == '\0')) | |
2de7ced7 | 834 | { |
980cae7a DC |
835 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
836 | linkage_name_copy); | |
2de7ced7 DJ |
837 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
838 | ||
04a679b8 TT |
839 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
840 | lookup_name==linkage_name. In this case, we already have the | |
841 | mangled name saved, and we don't have a demangled name. So, | |
842 | you might think we could save a little space by not recording | |
843 | this in the hash table at all. | |
844 | ||
845 | It turns out that it is actually important to still save such | |
846 | an entry in the hash table, because storing this name gives | |
705b5767 | 847 | us better bcache hit rates for partial symbols. */ |
04a679b8 TT |
848 | if (!copy_name && lookup_name == linkage_name) |
849 | { | |
84a1243b | 850 | *slot = obstack_alloc (&per_bfd->storage_obstack, |
04a679b8 TT |
851 | offsetof (struct demangled_name_entry, |
852 | demangled) | |
853 | + demangled_len + 1); | |
9d2ceabe | 854 | (*slot)->mangled = lookup_name; |
04a679b8 TT |
855 | } |
856 | else | |
857 | { | |
9d2ceabe TT |
858 | char *mangled_ptr; |
859 | ||
04a679b8 TT |
860 | /* If we must copy the mangled name, put it directly after |
861 | the demangled name so we can have a single | |
862 | allocation. */ | |
84a1243b | 863 | *slot = obstack_alloc (&per_bfd->storage_obstack, |
04a679b8 TT |
864 | offsetof (struct demangled_name_entry, |
865 | demangled) | |
866 | + lookup_len + demangled_len + 2); | |
9d2ceabe TT |
867 | mangled_ptr = &((*slot)->demangled[demangled_len + 1]); |
868 | strcpy (mangled_ptr, lookup_name); | |
869 | (*slot)->mangled = mangled_ptr; | |
04a679b8 TT |
870 | } |
871 | ||
980cae7a | 872 | if (demangled_name != NULL) |
2de7ced7 | 873 | { |
04a679b8 | 874 | strcpy ((*slot)->demangled, demangled_name); |
2de7ced7 DJ |
875 | xfree (demangled_name); |
876 | } | |
877 | else | |
04a679b8 | 878 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
879 | } |
880 | ||
72dcaf82 | 881 | gsymbol->name = (*slot)->mangled + lookup_len - len; |
04a679b8 | 882 | if ((*slot)->demangled[0] != '\0') |
ccde22c0 | 883 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, |
84a1243b | 884 | &per_bfd->storage_obstack); |
2de7ced7 | 885 | else |
84a1243b | 886 | symbol_set_demangled_name (gsymbol, NULL, &per_bfd->storage_obstack); |
2de7ced7 DJ |
887 | } |
888 | ||
22abf04a DC |
889 | /* Return the source code name of a symbol. In languages where |
890 | demangling is necessary, this is the demangled name. */ | |
891 | ||
0d5cff50 | 892 | const char * |
22abf04a DC |
893 | symbol_natural_name (const struct general_symbol_info *gsymbol) |
894 | { | |
9af17804 | 895 | switch (gsymbol->language) |
22abf04a | 896 | { |
1f8173e6 | 897 | case language_cplus: |
6aecb9c2 | 898 | case language_d: |
a766d390 | 899 | case language_go: |
1f8173e6 PH |
900 | case language_java: |
901 | case language_objc: | |
f55ee35c | 902 | case language_fortran: |
b250c185 SW |
903 | if (symbol_get_demangled_name (gsymbol) != NULL) |
904 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
905 | break; |
906 | case language_ada: | |
f85f34ed | 907 | return ada_decode_symbol (gsymbol); |
1f8173e6 PH |
908 | default: |
909 | break; | |
22abf04a | 910 | } |
1f8173e6 | 911 | return gsymbol->name; |
22abf04a DC |
912 | } |
913 | ||
9cc0d196 | 914 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 915 | that symbol. If no demangled name exists, return NULL. */ |
eca864fe | 916 | |
0d5cff50 | 917 | const char * |
df8a16a1 | 918 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 919 | { |
c6e5ee5e SDJ |
920 | const char *dem_name = NULL; |
921 | ||
9af17804 | 922 | switch (gsymbol->language) |
1f8173e6 PH |
923 | { |
924 | case language_cplus: | |
6aecb9c2 | 925 | case language_d: |
a766d390 | 926 | case language_go: |
1f8173e6 PH |
927 | case language_java: |
928 | case language_objc: | |
f55ee35c | 929 | case language_fortran: |
c6e5ee5e | 930 | dem_name = symbol_get_demangled_name (gsymbol); |
1f8173e6 PH |
931 | break; |
932 | case language_ada: | |
f85f34ed | 933 | dem_name = ada_decode_symbol (gsymbol); |
1f8173e6 PH |
934 | break; |
935 | default: | |
936 | break; | |
937 | } | |
c6e5ee5e | 938 | return dem_name; |
9cc0d196 | 939 | } |
fe39c653 | 940 | |
4725b721 PH |
941 | /* Return the search name of a symbol---generally the demangled or |
942 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 943 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 944 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
eca864fe | 945 | |
0d5cff50 | 946 | const char * |
fc062ac6 JB |
947 | symbol_search_name (const struct general_symbol_info *gsymbol) |
948 | { | |
1f8173e6 PH |
949 | if (gsymbol->language == language_ada) |
950 | return gsymbol->name; | |
951 | else | |
952 | return symbol_natural_name (gsymbol); | |
4725b721 PH |
953 | } |
954 | ||
fe39c653 | 955 | /* Initialize the structure fields to zero values. */ |
eca864fe | 956 | |
fe39c653 EZ |
957 | void |
958 | init_sal (struct symtab_and_line *sal) | |
959 | { | |
729662a5 | 960 | memset (sal, 0, sizeof (*sal)); |
fe39c653 | 961 | } |
c906108c SS |
962 | \f |
963 | ||
94277a38 DJ |
964 | /* Return 1 if the two sections are the same, or if they could |
965 | plausibly be copies of each other, one in an original object | |
966 | file and another in a separated debug file. */ | |
967 | ||
968 | int | |
714835d5 UW |
969 | matching_obj_sections (struct obj_section *obj_first, |
970 | struct obj_section *obj_second) | |
94277a38 | 971 | { |
714835d5 UW |
972 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
973 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
974 | struct objfile *obj; |
975 | ||
976 | /* If they're the same section, then they match. */ | |
977 | if (first == second) | |
978 | return 1; | |
979 | ||
980 | /* If either is NULL, give up. */ | |
981 | if (first == NULL || second == NULL) | |
982 | return 0; | |
983 | ||
984 | /* This doesn't apply to absolute symbols. */ | |
985 | if (first->owner == NULL || second->owner == NULL) | |
986 | return 0; | |
987 | ||
988 | /* If they're in the same object file, they must be different sections. */ | |
989 | if (first->owner == second->owner) | |
990 | return 0; | |
991 | ||
992 | /* Check whether the two sections are potentially corresponding. They must | |
993 | have the same size, address, and name. We can't compare section indexes, | |
994 | which would be more reliable, because some sections may have been | |
995 | stripped. */ | |
996 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
997 | return 0; | |
998 | ||
818f79f6 | 999 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 1000 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
1001 | - bfd_get_start_address (first->owner) |
1002 | != bfd_get_section_vma (second->owner, second) | |
1003 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
1004 | return 0; |
1005 | ||
1006 | if (bfd_get_section_name (first->owner, first) == NULL | |
1007 | || bfd_get_section_name (second->owner, second) == NULL | |
1008 | || strcmp (bfd_get_section_name (first->owner, first), | |
1009 | bfd_get_section_name (second->owner, second)) != 0) | |
1010 | return 0; | |
1011 | ||
1012 | /* Otherwise check that they are in corresponding objfiles. */ | |
1013 | ||
1014 | ALL_OBJFILES (obj) | |
1015 | if (obj->obfd == first->owner) | |
1016 | break; | |
1017 | gdb_assert (obj != NULL); | |
1018 | ||
1019 | if (obj->separate_debug_objfile != NULL | |
1020 | && obj->separate_debug_objfile->obfd == second->owner) | |
1021 | return 1; | |
1022 | if (obj->separate_debug_objfile_backlink != NULL | |
1023 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
1024 | return 1; | |
1025 | ||
1026 | return 0; | |
1027 | } | |
c5aa993b | 1028 | |
2097ae25 DE |
1029 | /* See symtab.h. */ |
1030 | ||
1031 | void | |
1032 | expand_symtab_containing_pc (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 1033 | { |
52f0bd74 | 1034 | struct objfile *objfile; |
77e371c0 | 1035 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
1036 | |
1037 | /* If we know that this is not a text address, return failure. This is | |
1038 | necessary because we loop based on texthigh and textlow, which do | |
1039 | not include the data ranges. */ | |
77e371c0 TT |
1040 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
1041 | if (msymbol.minsym | |
1042 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
1043 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
1044 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
1045 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
1046 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
2097ae25 | 1047 | return; |
c906108c | 1048 | |
ff013f42 | 1049 | ALL_OBJFILES (objfile) |
ccefe4c4 | 1050 | { |
43f3e411 | 1051 | struct compunit_symtab *cust = NULL; |
433759f7 | 1052 | |
ccefe4c4 | 1053 | if (objfile->sf) |
43f3e411 DE |
1054 | cust = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, |
1055 | pc, section, 0); | |
1056 | if (cust) | |
2097ae25 | 1057 | return; |
ccefe4c4 | 1058 | } |
c906108c | 1059 | } |
c906108c SS |
1060 | \f |
1061 | /* Debug symbols usually don't have section information. We need to dig that | |
1062 | out of the minimal symbols and stash that in the debug symbol. */ | |
1063 | ||
ccefe4c4 | 1064 | void |
907fc202 UW |
1065 | fixup_section (struct general_symbol_info *ginfo, |
1066 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1067 | { |
1068 | struct minimal_symbol *msym; | |
c906108c | 1069 | |
bccdca4a UW |
1070 | /* First, check whether a minimal symbol with the same name exists |
1071 | and points to the same address. The address check is required | |
1072 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1073 | point to the function descriptor, while the debug symbol will | |
1074 | point to the actual function code. */ | |
907fc202 UW |
1075 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1076 | if (msym) | |
efd66ac6 | 1077 | ginfo->section = MSYMBOL_SECTION (msym); |
907fc202 | 1078 | else |
19e2d14b KB |
1079 | { |
1080 | /* Static, function-local variables do appear in the linker | |
1081 | (minimal) symbols, but are frequently given names that won't | |
1082 | be found via lookup_minimal_symbol(). E.g., it has been | |
1083 | observed in frv-uclinux (ELF) executables that a static, | |
1084 | function-local variable named "foo" might appear in the | |
1085 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1086 | point in attempting to extend the lookup-by-name mechanism to | |
1087 | handle this case due to the fact that there can be multiple | |
1088 | names. | |
9af17804 | 1089 | |
19e2d14b KB |
1090 | So, instead, search the section table when lookup by name has |
1091 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1092 | been relocated. If so, the relocation offset (i.e. the | |
1093 | ANOFFSET value) needs to be subtracted from these values when | |
1094 | performing the comparison. We unconditionally subtract it, | |
1095 | because, when no relocation has been performed, the ANOFFSET | |
1096 | value will simply be zero. | |
9af17804 | 1097 | |
19e2d14b KB |
1098 | The address of the symbol whose section we're fixing up HAS |
1099 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1100 | the section isn't yet known and knowing the section is | |
1101 | necessary in order to add the correct relocation value. In | |
1102 | other words, we wouldn't even be in this function (attempting | |
1103 | to compute the section) if it were already known. | |
1104 | ||
1105 | Note that it is possible to search the minimal symbols | |
1106 | (subtracting the relocation value if necessary) to find the | |
1107 | matching minimal symbol, but this is overkill and much less | |
1108 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1109 | symbol, only its section. |
1110 | ||
19e2d14b KB |
1111 | Note that this technique (of doing a section table search) |
1112 | can fail when unrelocated section addresses overlap. For | |
1113 | this reason, we still attempt a lookup by name prior to doing | |
1114 | a search of the section table. */ | |
9af17804 | 1115 | |
19e2d14b | 1116 | struct obj_section *s; |
e27d198c | 1117 | int fallback = -1; |
433759f7 | 1118 | |
19e2d14b KB |
1119 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1120 | { | |
65cf3563 | 1121 | int idx = s - objfile->sections; |
19e2d14b KB |
1122 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); |
1123 | ||
e27d198c TT |
1124 | if (fallback == -1) |
1125 | fallback = idx; | |
1126 | ||
f1f6aadf PA |
1127 | if (obj_section_addr (s) - offset <= addr |
1128 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1129 | { |
19e2d14b KB |
1130 | ginfo->section = idx; |
1131 | return; | |
1132 | } | |
1133 | } | |
e27d198c TT |
1134 | |
1135 | /* If we didn't find the section, assume it is in the first | |
1136 | section. If there is no allocated section, then it hardly | |
1137 | matters what we pick, so just pick zero. */ | |
1138 | if (fallback == -1) | |
1139 | ginfo->section = 0; | |
1140 | else | |
1141 | ginfo->section = fallback; | |
19e2d14b | 1142 | } |
c906108c SS |
1143 | } |
1144 | ||
1145 | struct symbol * | |
fba45db2 | 1146 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1147 | { |
907fc202 UW |
1148 | CORE_ADDR addr; |
1149 | ||
c906108c SS |
1150 | if (!sym) |
1151 | return NULL; | |
1152 | ||
907fc202 UW |
1153 | /* We either have an OBJFILE, or we can get at it from the sym's |
1154 | symtab. Anything else is a bug. */ | |
1155 | gdb_assert (objfile || SYMBOL_SYMTAB (sym)); | |
1156 | ||
1157 | if (objfile == NULL) | |
aff08958 | 1158 | objfile = SYMBOL_OBJFILE (sym); |
907fc202 | 1159 | |
e27d198c TT |
1160 | if (SYMBOL_OBJ_SECTION (objfile, sym)) |
1161 | return sym; | |
1162 | ||
907fc202 UW |
1163 | /* We should have an objfile by now. */ |
1164 | gdb_assert (objfile); | |
1165 | ||
1166 | switch (SYMBOL_CLASS (sym)) | |
1167 | { | |
1168 | case LOC_STATIC: | |
1169 | case LOC_LABEL: | |
907fc202 UW |
1170 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1171 | break; | |
1172 | case LOC_BLOCK: | |
1173 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1174 | break; | |
1175 | ||
1176 | default: | |
1177 | /* Nothing else will be listed in the minsyms -- no use looking | |
1178 | it up. */ | |
1179 | return sym; | |
1180 | } | |
1181 | ||
1182 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1183 | |
1184 | return sym; | |
1185 | } | |
1186 | ||
f8eba3c6 TT |
1187 | /* Compute the demangled form of NAME as used by the various symbol |
1188 | lookup functions. The result is stored in *RESULT_NAME. Returns a | |
1189 | cleanup which can be used to clean up the result. | |
1190 | ||
1191 | For Ada, this function just sets *RESULT_NAME to NAME, unmodified. | |
1192 | Normally, Ada symbol lookups are performed using the encoded name | |
1193 | rather than the demangled name, and so it might seem to make sense | |
1194 | for this function to return an encoded version of NAME. | |
1195 | Unfortunately, we cannot do this, because this function is used in | |
1196 | circumstances where it is not appropriate to try to encode NAME. | |
1197 | For instance, when displaying the frame info, we demangle the name | |
1198 | of each parameter, and then perform a symbol lookup inside our | |
1199 | function using that demangled name. In Ada, certain functions | |
1200 | have internally-generated parameters whose name contain uppercase | |
1201 | characters. Encoding those name would result in those uppercase | |
1202 | characters to become lowercase, and thus cause the symbol lookup | |
1203 | to fail. */ | |
c906108c | 1204 | |
f8eba3c6 TT |
1205 | struct cleanup * |
1206 | demangle_for_lookup (const char *name, enum language lang, | |
1207 | const char **result_name) | |
c906108c | 1208 | { |
729051e6 DJ |
1209 | char *demangled_name = NULL; |
1210 | const char *modified_name = NULL; | |
9ee6bb93 | 1211 | struct cleanup *cleanup = make_cleanup (null_cleanup, 0); |
c906108c | 1212 | |
729051e6 DJ |
1213 | modified_name = name; |
1214 | ||
a766d390 | 1215 | /* If we are using C++, D, Go, or Java, demangle the name before doing a |
c378eb4e | 1216 | lookup, so we can always binary search. */ |
53c5240f | 1217 | if (lang == language_cplus) |
729051e6 | 1218 | { |
8de20a37 | 1219 | demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS); |
729051e6 DJ |
1220 | if (demangled_name) |
1221 | { | |
729051e6 | 1222 | modified_name = demangled_name; |
9ee6bb93 | 1223 | make_cleanup (xfree, demangled_name); |
729051e6 | 1224 | } |
71c25dea TT |
1225 | else |
1226 | { | |
1227 | /* If we were given a non-mangled name, canonicalize it | |
1228 | according to the language (so far only for C++). */ | |
1229 | demangled_name = cp_canonicalize_string (name); | |
1230 | if (demangled_name) | |
1231 | { | |
1232 | modified_name = demangled_name; | |
1233 | make_cleanup (xfree, demangled_name); | |
1234 | } | |
1235 | } | |
729051e6 | 1236 | } |
53c5240f | 1237 | else if (lang == language_java) |
987504bb | 1238 | { |
8de20a37 TT |
1239 | demangled_name = gdb_demangle (name, |
1240 | DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA); | |
987504bb JJ |
1241 | if (demangled_name) |
1242 | { | |
987504bb | 1243 | modified_name = demangled_name; |
9ee6bb93 | 1244 | make_cleanup (xfree, demangled_name); |
987504bb JJ |
1245 | } |
1246 | } | |
6aecb9c2 JB |
1247 | else if (lang == language_d) |
1248 | { | |
1249 | demangled_name = d_demangle (name, 0); | |
1250 | if (demangled_name) | |
1251 | { | |
1252 | modified_name = demangled_name; | |
1253 | make_cleanup (xfree, demangled_name); | |
1254 | } | |
1255 | } | |
a766d390 DE |
1256 | else if (lang == language_go) |
1257 | { | |
1258 | demangled_name = go_demangle (name, 0); | |
1259 | if (demangled_name) | |
1260 | { | |
1261 | modified_name = demangled_name; | |
1262 | make_cleanup (xfree, demangled_name); | |
1263 | } | |
1264 | } | |
729051e6 | 1265 | |
f8eba3c6 TT |
1266 | *result_name = modified_name; |
1267 | return cleanup; | |
1268 | } | |
1269 | ||
cf901d3b | 1270 | /* See symtab.h. |
f8eba3c6 | 1271 | |
cf901d3b | 1272 | This function (or rather its subordinates) have a bunch of loops and |
7e082072 DE |
1273 | it would seem to be attractive to put in some QUIT's (though I'm not really |
1274 | sure whether it can run long enough to be really important). But there | |
f8eba3c6 | 1275 | are a few calls for which it would appear to be bad news to quit |
7e082072 | 1276 | out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note |
f8eba3c6 TT |
1277 | that there is C++ code below which can error(), but that probably |
1278 | doesn't affect these calls since they are looking for a known | |
1279 | variable and thus can probably assume it will never hit the C++ | |
1280 | code). */ | |
1281 | ||
1282 | struct symbol * | |
1283 | lookup_symbol_in_language (const char *name, const struct block *block, | |
1284 | const domain_enum domain, enum language lang, | |
1993b719 | 1285 | struct field_of_this_result *is_a_field_of_this) |
f8eba3c6 TT |
1286 | { |
1287 | const char *modified_name; | |
1288 | struct symbol *returnval; | |
1289 | struct cleanup *cleanup = demangle_for_lookup (name, lang, &modified_name); | |
1290 | ||
94af9270 | 1291 | returnval = lookup_symbol_aux (modified_name, block, domain, lang, |
774b6a14 | 1292 | is_a_field_of_this); |
9ee6bb93 | 1293 | do_cleanups (cleanup); |
fba7f19c | 1294 | |
9af17804 | 1295 | return returnval; |
fba7f19c EZ |
1296 | } |
1297 | ||
cf901d3b | 1298 | /* See symtab.h. */ |
53c5240f PA |
1299 | |
1300 | struct symbol * | |
1301 | lookup_symbol (const char *name, const struct block *block, | |
1993b719 TT |
1302 | domain_enum domain, |
1303 | struct field_of_this_result *is_a_field_of_this) | |
53c5240f PA |
1304 | { |
1305 | return lookup_symbol_in_language (name, block, domain, | |
1306 | current_language->la_language, | |
2570f2b7 | 1307 | is_a_field_of_this); |
53c5240f PA |
1308 | } |
1309 | ||
cf901d3b | 1310 | /* See symtab.h. */ |
66a17cb6 TT |
1311 | |
1312 | struct symbol * | |
1313 | lookup_language_this (const struct language_defn *lang, | |
1314 | const struct block *block) | |
1315 | { | |
1316 | if (lang->la_name_of_this == NULL || block == NULL) | |
1317 | return NULL; | |
1318 | ||
cc485e62 DE |
1319 | if (symbol_lookup_debug > 1) |
1320 | { | |
1321 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1322 | ||
1323 | fprintf_unfiltered (gdb_stdlog, | |
1324 | "lookup_language_this (%s, %s (objfile %s))", | |
1325 | lang->la_name, host_address_to_string (block), | |
1326 | objfile_debug_name (objfile)); | |
1327 | } | |
1328 | ||
03de6823 | 1329 | while (block) |
66a17cb6 TT |
1330 | { |
1331 | struct symbol *sym; | |
1332 | ||
16b2eaa1 | 1333 | sym = block_lookup_symbol (block, lang->la_name_of_this, VAR_DOMAIN); |
66a17cb6 | 1334 | if (sym != NULL) |
f149aabd | 1335 | { |
cc485e62 DE |
1336 | if (symbol_lookup_debug > 1) |
1337 | { | |
1338 | fprintf_unfiltered (gdb_stdlog, " = %s (%s, block %s)\n", | |
1339 | SYMBOL_PRINT_NAME (sym), | |
1340 | host_address_to_string (sym), | |
1341 | host_address_to_string (block)); | |
1342 | } | |
f149aabd TT |
1343 | block_found = block; |
1344 | return sym; | |
1345 | } | |
66a17cb6 | 1346 | if (BLOCK_FUNCTION (block)) |
03de6823 | 1347 | break; |
66a17cb6 TT |
1348 | block = BLOCK_SUPERBLOCK (block); |
1349 | } | |
03de6823 | 1350 | |
cc485e62 DE |
1351 | if (symbol_lookup_debug > 1) |
1352 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
03de6823 | 1353 | return NULL; |
66a17cb6 TT |
1354 | } |
1355 | ||
2dc3df72 TT |
1356 | /* Given TYPE, a structure/union, |
1357 | return 1 if the component named NAME from the ultimate target | |
1358 | structure/union is defined, otherwise, return 0. */ | |
1359 | ||
1360 | static int | |
1993b719 TT |
1361 | check_field (struct type *type, const char *name, |
1362 | struct field_of_this_result *is_a_field_of_this) | |
2dc3df72 TT |
1363 | { |
1364 | int i; | |
1365 | ||
1366 | /* The type may be a stub. */ | |
1367 | CHECK_TYPEDEF (type); | |
1368 | ||
1369 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1370 | { | |
1371 | const char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1372 | ||
1373 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1993b719 TT |
1374 | { |
1375 | is_a_field_of_this->type = type; | |
1376 | is_a_field_of_this->field = &TYPE_FIELD (type, i); | |
1377 | return 1; | |
1378 | } | |
2dc3df72 TT |
1379 | } |
1380 | ||
1381 | /* C++: If it was not found as a data field, then try to return it | |
1382 | as a pointer to a method. */ | |
1383 | ||
1384 | for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i) | |
1385 | { | |
1386 | if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0) | |
1993b719 TT |
1387 | { |
1388 | is_a_field_of_this->type = type; | |
1389 | is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i); | |
1390 | return 1; | |
1391 | } | |
2dc3df72 TT |
1392 | } |
1393 | ||
1394 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1993b719 | 1395 | if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this)) |
2dc3df72 TT |
1396 | return 1; |
1397 | ||
1398 | return 0; | |
1399 | } | |
1400 | ||
53c5240f | 1401 | /* Behave like lookup_symbol except that NAME is the natural name |
7e082072 | 1402 | (e.g., demangled name) of the symbol that we're looking for. */ |
5ad1c190 | 1403 | |
fba7f19c | 1404 | static struct symbol * |
94af9270 KS |
1405 | lookup_symbol_aux (const char *name, const struct block *block, |
1406 | const domain_enum domain, enum language language, | |
1993b719 | 1407 | struct field_of_this_result *is_a_field_of_this) |
fba7f19c | 1408 | { |
8155455b | 1409 | struct symbol *sym; |
53c5240f | 1410 | const struct language_defn *langdef; |
406bc4de | 1411 | |
cc485e62 DE |
1412 | if (symbol_lookup_debug) |
1413 | { | |
1414 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1415 | ||
1416 | fprintf_unfiltered (gdb_stdlog, | |
1417 | "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n", | |
1418 | name, host_address_to_string (block), | |
1419 | objfile != NULL | |
1420 | ? objfile_debug_name (objfile) : "NULL", | |
1421 | domain_name (domain), language_str (language)); | |
1422 | } | |
1423 | ||
9a146a11 EZ |
1424 | /* Make sure we do something sensible with is_a_field_of_this, since |
1425 | the callers that set this parameter to some non-null value will | |
1993b719 TT |
1426 | certainly use it later. If we don't set it, the contents of |
1427 | is_a_field_of_this are undefined. */ | |
9a146a11 | 1428 | if (is_a_field_of_this != NULL) |
1993b719 | 1429 | memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this)); |
9a146a11 | 1430 | |
e4051eeb DC |
1431 | /* Search specified block and its superiors. Don't search |
1432 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1433 | |
74016e12 | 1434 | sym = lookup_local_symbol (name, block, domain, language); |
8155455b | 1435 | if (sym != NULL) |
cc485e62 DE |
1436 | { |
1437 | if (symbol_lookup_debug) | |
1438 | { | |
1439 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
1440 | host_address_to_string (sym)); | |
1441 | } | |
1442 | return sym; | |
1443 | } | |
c906108c | 1444 | |
53c5240f | 1445 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 1446 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
1447 | |
1448 | langdef = language_def (language); | |
5f9a71c3 | 1449 | |
6592e36f TT |
1450 | /* Don't do this check if we are searching for a struct. It will |
1451 | not be found by check_field, but will be found by other | |
1452 | means. */ | |
1453 | if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN) | |
c906108c | 1454 | { |
66a17cb6 | 1455 | struct symbol *sym = lookup_language_this (langdef, block); |
2b2d9e11 | 1456 | |
2b2d9e11 | 1457 | if (sym) |
c906108c | 1458 | { |
2b2d9e11 | 1459 | struct type *t = sym->type; |
9af17804 | 1460 | |
2b2d9e11 VP |
1461 | /* I'm not really sure that type of this can ever |
1462 | be typedefed; just be safe. */ | |
1463 | CHECK_TYPEDEF (t); | |
1464 | if (TYPE_CODE (t) == TYPE_CODE_PTR | |
1465 | || TYPE_CODE (t) == TYPE_CODE_REF) | |
1466 | t = TYPE_TARGET_TYPE (t); | |
9af17804 | 1467 | |
2b2d9e11 VP |
1468 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
1469 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 1470 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 1471 | langdef->la_name_of_this); |
9af17804 | 1472 | |
1993b719 | 1473 | if (check_field (t, name, is_a_field_of_this)) |
cc485e62 DE |
1474 | { |
1475 | if (symbol_lookup_debug) | |
1476 | { | |
1477 | fprintf_unfiltered (gdb_stdlog, | |
1478 | "lookup_symbol_aux (...) = NULL\n"); | |
1479 | } | |
1480 | return NULL; | |
1481 | } | |
c906108c SS |
1482 | } |
1483 | } | |
1484 | ||
53c5240f | 1485 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 1486 | up static and global variables. */ |
c906108c | 1487 | |
774b6a14 TT |
1488 | sym = langdef->la_lookup_symbol_nonlocal (name, block, domain); |
1489 | if (sym != NULL) | |
cc485e62 DE |
1490 | { |
1491 | if (symbol_lookup_debug) | |
1492 | { | |
1493 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
1494 | host_address_to_string (sym)); | |
1495 | } | |
1496 | return sym; | |
1497 | } | |
c906108c | 1498 | |
774b6a14 TT |
1499 | /* Now search all static file-level symbols. Not strictly correct, |
1500 | but more useful than an error. */ | |
41f62f39 | 1501 | |
cc485e62 DE |
1502 | sym = lookup_static_symbol (name, domain); |
1503 | if (symbol_lookup_debug) | |
1504 | { | |
1505 | fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n", | |
1506 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
1507 | } | |
1508 | return sym; | |
41f62f39 JK |
1509 | } |
1510 | ||
e4051eeb | 1511 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 1512 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b DC |
1513 | |
1514 | static struct symbol * | |
74016e12 DE |
1515 | lookup_local_symbol (const char *name, const struct block *block, |
1516 | const domain_enum domain, | |
1517 | enum language language) | |
8155455b DC |
1518 | { |
1519 | struct symbol *sym; | |
89a9d1b1 | 1520 | const struct block *static_block = block_static_block (block); |
13387711 SW |
1521 | const char *scope = block_scope (block); |
1522 | ||
e4051eeb DC |
1523 | /* Check if either no block is specified or it's a global block. */ |
1524 | ||
89a9d1b1 DC |
1525 | if (static_block == NULL) |
1526 | return NULL; | |
e4051eeb | 1527 | |
89a9d1b1 | 1528 | while (block != static_block) |
f61e8913 | 1529 | { |
d1a2d36d | 1530 | sym = lookup_symbol_in_block (name, block, domain); |
f61e8913 DC |
1531 | if (sym != NULL) |
1532 | return sym; | |
edb3359d | 1533 | |
f55ee35c | 1534 | if (language == language_cplus || language == language_fortran) |
13387711 | 1535 | { |
34eaf542 TT |
1536 | sym = cp_lookup_symbol_imports_or_template (scope, name, block, |
1537 | domain); | |
13387711 SW |
1538 | if (sym != NULL) |
1539 | return sym; | |
1540 | } | |
1541 | ||
edb3359d DJ |
1542 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
1543 | break; | |
f61e8913 DC |
1544 | block = BLOCK_SUPERBLOCK (block); |
1545 | } | |
1546 | ||
3aee438b | 1547 | /* We've reached the end of the function without finding a result. */ |
e4051eeb | 1548 | |
f61e8913 DC |
1549 | return NULL; |
1550 | } | |
1551 | ||
cf901d3b | 1552 | /* See symtab.h. */ |
3a40aaa0 | 1553 | |
c0201579 | 1554 | struct objfile * |
3a40aaa0 UW |
1555 | lookup_objfile_from_block (const struct block *block) |
1556 | { | |
1557 | struct objfile *obj; | |
43f3e411 | 1558 | struct compunit_symtab *cust; |
3a40aaa0 UW |
1559 | |
1560 | if (block == NULL) | |
1561 | return NULL; | |
1562 | ||
1563 | block = block_global_block (block); | |
43f3e411 DE |
1564 | /* Look through all blockvectors. */ |
1565 | ALL_COMPUNITS (obj, cust) | |
1566 | if (block == BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), | |
1567 | GLOBAL_BLOCK)) | |
61f0d762 JK |
1568 | { |
1569 | if (obj->separate_debug_objfile_backlink) | |
1570 | obj = obj->separate_debug_objfile_backlink; | |
1571 | ||
1572 | return obj; | |
1573 | } | |
3a40aaa0 UW |
1574 | |
1575 | return NULL; | |
1576 | } | |
1577 | ||
cf901d3b | 1578 | /* See symtab.h. */ |
f61e8913 | 1579 | |
5f9a71c3 | 1580 | struct symbol * |
d1a2d36d DE |
1581 | lookup_symbol_in_block (const char *name, const struct block *block, |
1582 | const domain_enum domain) | |
f61e8913 DC |
1583 | { |
1584 | struct symbol *sym; | |
f61e8913 | 1585 | |
cc485e62 DE |
1586 | if (symbol_lookup_debug > 1) |
1587 | { | |
1588 | struct objfile *objfile = lookup_objfile_from_block (block); | |
1589 | ||
1590 | fprintf_unfiltered (gdb_stdlog, | |
1591 | "lookup_symbol_in_block (%s, %s (objfile %s), %s)", | |
1592 | name, host_address_to_string (block), | |
1593 | objfile_debug_name (objfile), | |
1594 | domain_name (domain)); | |
1595 | } | |
1596 | ||
16b2eaa1 | 1597 | sym = block_lookup_symbol (block, name, domain); |
f61e8913 | 1598 | if (sym) |
8155455b | 1599 | { |
cc485e62 DE |
1600 | if (symbol_lookup_debug > 1) |
1601 | { | |
1602 | fprintf_unfiltered (gdb_stdlog, " = %s\n", | |
1603 | host_address_to_string (sym)); | |
1604 | } | |
f61e8913 | 1605 | block_found = block; |
21b556f4 | 1606 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
1607 | } |
1608 | ||
cc485e62 DE |
1609 | if (symbol_lookup_debug > 1) |
1610 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
8155455b DC |
1611 | return NULL; |
1612 | } | |
1613 | ||
cf901d3b | 1614 | /* See symtab.h. */ |
3a40aaa0 UW |
1615 | |
1616 | struct symbol * | |
efad9b6a | 1617 | lookup_global_symbol_from_objfile (struct objfile *main_objfile, |
3a40aaa0 | 1618 | const char *name, |
21b556f4 | 1619 | const domain_enum domain) |
3a40aaa0 | 1620 | { |
efad9b6a | 1621 | struct objfile *objfile; |
3a40aaa0 | 1622 | |
15d123c9 TG |
1623 | for (objfile = main_objfile; |
1624 | objfile; | |
1625 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
1626 | { | |
fe2a438d DE |
1627 | struct symbol *sym = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
1628 | name, domain); | |
15d123c9 | 1629 | |
fe2a438d | 1630 | if (sym != NULL) |
ccefe4c4 | 1631 | return sym; |
15d123c9 | 1632 | } |
56e3f43c | 1633 | |
3a40aaa0 UW |
1634 | return NULL; |
1635 | } | |
1636 | ||
19630284 JB |
1637 | /* Check to see if the symbol is defined in one of the OBJFILE's |
1638 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
8155455b DC |
1639 | depending on whether or not we want to search global symbols or |
1640 | static symbols. */ | |
1641 | ||
19630284 | 1642 | static struct symbol * |
74016e12 DE |
1643 | lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index, |
1644 | const char *name, const domain_enum domain) | |
19630284 | 1645 | { |
43f3e411 | 1646 | struct compunit_symtab *cust; |
19630284 | 1647 | |
ba715d7f JK |
1648 | gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK); |
1649 | ||
cc485e62 DE |
1650 | if (symbol_lookup_debug > 1) |
1651 | { | |
1652 | fprintf_unfiltered (gdb_stdlog, | |
1653 | "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)", | |
1654 | objfile_debug_name (objfile), | |
1655 | block_index == GLOBAL_BLOCK | |
1656 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
1657 | name, domain_name (domain)); | |
1658 | } | |
1659 | ||
43f3e411 | 1660 | ALL_OBJFILE_COMPUNITS (objfile, cust) |
a743abeb | 1661 | { |
43f3e411 DE |
1662 | const struct blockvector *bv; |
1663 | const struct block *block; | |
1664 | struct symbol *sym; | |
1665 | ||
1666 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
a743abeb | 1667 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
ba715d7f | 1668 | sym = block_lookup_symbol_primary (block, name, domain); |
a743abeb DE |
1669 | if (sym) |
1670 | { | |
cc485e62 DE |
1671 | if (symbol_lookup_debug > 1) |
1672 | { | |
1673 | fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n", | |
1674 | host_address_to_string (sym), | |
1675 | host_address_to_string (block)); | |
1676 | } | |
a743abeb DE |
1677 | block_found = block; |
1678 | return fixup_symbol_section (sym, objfile); | |
1679 | } | |
1680 | } | |
19630284 | 1681 | |
cc485e62 DE |
1682 | if (symbol_lookup_debug > 1) |
1683 | fprintf_unfiltered (gdb_stdlog, " = NULL\n"); | |
19630284 JB |
1684 | return NULL; |
1685 | } | |
1686 | ||
74016e12 | 1687 | /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols. |
422d65e7 | 1688 | Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE |
01465b56 DE |
1689 | and all associated separate debug objfiles. |
1690 | ||
1691 | Normally we only look in OBJFILE, and not any separate debug objfiles | |
1692 | because the outer loop will cause them to be searched too. This case is | |
1693 | different. Here we're called from search_symbols where it will only | |
1694 | call us for the the objfile that contains a matching minsym. */ | |
422d65e7 DE |
1695 | |
1696 | static struct symbol * | |
1697 | lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile, | |
1698 | const char *linkage_name, | |
1699 | domain_enum domain) | |
1700 | { | |
1701 | enum language lang = current_language->la_language; | |
1702 | const char *modified_name; | |
1703 | struct cleanup *cleanup = demangle_for_lookup (linkage_name, lang, | |
1704 | &modified_name); | |
1705 | struct objfile *main_objfile, *cur_objfile; | |
1706 | ||
1707 | if (objfile->separate_debug_objfile_backlink) | |
1708 | main_objfile = objfile->separate_debug_objfile_backlink; | |
1709 | else | |
1710 | main_objfile = objfile; | |
1711 | ||
1712 | for (cur_objfile = main_objfile; | |
1713 | cur_objfile; | |
1714 | cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile)) | |
1715 | { | |
1716 | struct symbol *sym; | |
1717 | ||
74016e12 DE |
1718 | sym = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK, |
1719 | modified_name, domain); | |
422d65e7 | 1720 | if (sym == NULL) |
74016e12 DE |
1721 | sym = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK, |
1722 | modified_name, domain); | |
422d65e7 DE |
1723 | if (sym != NULL) |
1724 | { | |
1725 | do_cleanups (cleanup); | |
1726 | return sym; | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | do_cleanups (cleanup); | |
1731 | return NULL; | |
1732 | } | |
1733 | ||
08c23b0d TT |
1734 | /* A helper function that throws an exception when a symbol was found |
1735 | in a psymtab but not in a symtab. */ | |
1736 | ||
1737 | static void ATTRIBUTE_NORETURN | |
f88cb4b6 | 1738 | error_in_psymtab_expansion (int block_index, const char *name, |
43f3e411 | 1739 | struct compunit_symtab *cust) |
08c23b0d TT |
1740 | { |
1741 | error (_("\ | |
1742 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
1743 | %s may be an inlined function, or may be a template function\n \ | |
1744 | (if a template, try specifying an instantiation: %s<type>)."), | |
f88cb4b6 | 1745 | block_index == GLOBAL_BLOCK ? "global" : "static", |
43f3e411 DE |
1746 | name, |
1747 | symtab_to_filename_for_display (compunit_primary_filetab (cust)), | |
1748 | name, name); | |
08c23b0d TT |
1749 | } |
1750 | ||
74016e12 DE |
1751 | /* A helper function for various lookup routines that interfaces with |
1752 | the "quick" symbol table functions. */ | |
8155455b DC |
1753 | |
1754 | static struct symbol * | |
74016e12 DE |
1755 | lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index, |
1756 | const char *name, const domain_enum domain) | |
8155455b | 1757 | { |
43f3e411 | 1758 | struct compunit_symtab *cust; |
346d1dfe | 1759 | const struct blockvector *bv; |
8155455b | 1760 | const struct block *block; |
ccefe4c4 | 1761 | struct symbol *sym; |
8155455b | 1762 | |
ccefe4c4 TT |
1763 | if (!objfile->sf) |
1764 | return NULL; | |
cc485e62 DE |
1765 | |
1766 | if (symbol_lookup_debug > 1) | |
1767 | { | |
1768 | fprintf_unfiltered (gdb_stdlog, | |
1769 | "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n", | |
1770 | objfile_debug_name (objfile), | |
1771 | block_index == GLOBAL_BLOCK | |
1772 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
1773 | name, domain_name (domain)); | |
1774 | } | |
1775 | ||
43f3e411 DE |
1776 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, domain); |
1777 | if (cust == NULL) | |
cc485e62 DE |
1778 | { |
1779 | if (symbol_lookup_debug > 1) | |
1780 | { | |
1781 | fprintf_unfiltered (gdb_stdlog, | |
1782 | "lookup_symbol_via_quick_fns (...) = NULL\n"); | |
1783 | } | |
1784 | return NULL; | |
1785 | } | |
8155455b | 1786 | |
43f3e411 | 1787 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 1788 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
16b2eaa1 | 1789 | sym = block_lookup_symbol (block, name, domain); |
ccefe4c4 | 1790 | if (!sym) |
43f3e411 | 1791 | error_in_psymtab_expansion (block_index, name, cust); |
cc485e62 DE |
1792 | |
1793 | if (symbol_lookup_debug > 1) | |
1794 | { | |
1795 | fprintf_unfiltered (gdb_stdlog, | |
1796 | "lookup_symbol_via_quick_fns (...) = %s (block %s)\n", | |
1797 | host_address_to_string (sym), | |
1798 | host_address_to_string (block)); | |
1799 | } | |
1800 | ||
ec201f0c | 1801 | block_found = block; |
ccefe4c4 | 1802 | return fixup_symbol_section (sym, objfile); |
8155455b DC |
1803 | } |
1804 | ||
cf901d3b | 1805 | /* See symtab.h. */ |
5f9a71c3 DC |
1806 | |
1807 | struct symbol * | |
1808 | basic_lookup_symbol_nonlocal (const char *name, | |
5f9a71c3 | 1809 | const struct block *block, |
21b556f4 | 1810 | const domain_enum domain) |
5f9a71c3 DC |
1811 | { |
1812 | struct symbol *sym; | |
1813 | ||
1814 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
1815 | this (or what turned into this) was part of lookup_symbol_aux; | |
1816 | I'm much less worried about these questions now, since these | |
1817 | decisions have turned out well, but I leave these comments here | |
1818 | for posterity. */ | |
1819 | ||
1820 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
1821 | not it would be appropriate to search the current global block | |
1822 | here as well. (That's what this code used to do before the | |
1823 | is_a_field_of_this check was moved up.) On the one hand, it's | |
af3768e9 | 1824 | redundant with the lookup in all objfiles search that happens |
5f9a71c3 DC |
1825 | next. On the other hand, if decode_line_1 is passed an argument |
1826 | like filename:var, then the user presumably wants 'var' to be | |
1827 | searched for in filename. On the third hand, there shouldn't be | |
1828 | multiple global variables all of which are named 'var', and it's | |
1829 | not like decode_line_1 has ever restricted its search to only | |
1830 | global variables in a single filename. All in all, only | |
1831 | searching the static block here seems best: it's correct and it's | |
1832 | cleanest. */ | |
1833 | ||
1834 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
1835 | issue here: if you usually search for global symbols in the | |
1836 | current file, then it would be slightly better to search the | |
1837 | current global block before searching all the symtabs. But there | |
1838 | are other factors that have a much greater effect on performance | |
1839 | than that one, so I don't think we should worry about that for | |
1840 | now. */ | |
1841 | ||
d9060ba6 DE |
1842 | /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip |
1843 | the current objfile. Searching the current objfile first is useful | |
1844 | for both matching user expectations as well as performance. */ | |
1845 | ||
24d864bb | 1846 | sym = lookup_symbol_in_static_block (name, block, domain); |
5f9a71c3 DC |
1847 | if (sym != NULL) |
1848 | return sym; | |
1849 | ||
08724ab7 | 1850 | return lookup_global_symbol (name, block, domain); |
5f9a71c3 DC |
1851 | } |
1852 | ||
cf901d3b | 1853 | /* See symtab.h. */ |
5f9a71c3 DC |
1854 | |
1855 | struct symbol * | |
24d864bb DE |
1856 | lookup_symbol_in_static_block (const char *name, |
1857 | const struct block *block, | |
1858 | const domain_enum domain) | |
5f9a71c3 DC |
1859 | { |
1860 | const struct block *static_block = block_static_block (block); | |
cc485e62 | 1861 | struct symbol *sym; |
5f9a71c3 | 1862 | |
cc485e62 | 1863 | if (static_block == NULL) |
5f9a71c3 | 1864 | return NULL; |
cc485e62 DE |
1865 | |
1866 | if (symbol_lookup_debug) | |
1867 | { | |
1868 | struct objfile *objfile = lookup_objfile_from_block (static_block); | |
1869 | ||
1870 | fprintf_unfiltered (gdb_stdlog, | |
1871 | "lookup_symbol_in_static_block (%s, %s (objfile %s)," | |
1872 | " %s)\n", | |
1873 | name, | |
1874 | host_address_to_string (block), | |
1875 | objfile_debug_name (objfile), | |
1876 | domain_name (domain)); | |
1877 | } | |
1878 | ||
1879 | sym = lookup_symbol_in_block (name, static_block, domain); | |
1880 | if (symbol_lookup_debug) | |
1881 | { | |
1882 | fprintf_unfiltered (gdb_stdlog, | |
1883 | "lookup_symbol_in_static_block (...) = %s\n", | |
1884 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
1885 | } | |
1886 | return sym; | |
5f9a71c3 DC |
1887 | } |
1888 | ||
af3768e9 DE |
1889 | /* Perform the standard symbol lookup of NAME in OBJFILE: |
1890 | 1) First search expanded symtabs, and if not found | |
1891 | 2) Search the "quick" symtabs (partial or .gdb_index). | |
1892 | BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */ | |
1893 | ||
1894 | static struct symbol * | |
1895 | lookup_symbol_in_objfile (struct objfile *objfile, int block_index, | |
1896 | const char *name, const domain_enum domain) | |
1897 | { | |
1898 | struct symbol *result; | |
1899 | ||
cc485e62 DE |
1900 | if (symbol_lookup_debug) |
1901 | { | |
1902 | fprintf_unfiltered (gdb_stdlog, | |
1903 | "lookup_symbol_in_objfile (%s, %s, %s, %s)\n", | |
1904 | objfile_debug_name (objfile), | |
1905 | block_index == GLOBAL_BLOCK | |
1906 | ? "GLOBAL_BLOCK" : "STATIC_BLOCK", | |
1907 | name, domain_name (domain)); | |
1908 | } | |
1909 | ||
af3768e9 DE |
1910 | result = lookup_symbol_in_objfile_symtabs (objfile, block_index, |
1911 | name, domain); | |
cc485e62 | 1912 | if (result != NULL) |
af3768e9 | 1913 | { |
cc485e62 DE |
1914 | if (symbol_lookup_debug) |
1915 | { | |
1916 | fprintf_unfiltered (gdb_stdlog, | |
1917 | "lookup_symbol_in_objfile (...) = %s" | |
1918 | " (in symtabs)\n", | |
1919 | host_address_to_string (result)); | |
1920 | } | |
1921 | return result; | |
af3768e9 DE |
1922 | } |
1923 | ||
cc485e62 DE |
1924 | result = lookup_symbol_via_quick_fns (objfile, block_index, |
1925 | name, domain); | |
1926 | if (symbol_lookup_debug) | |
1927 | { | |
1928 | fprintf_unfiltered (gdb_stdlog, | |
1929 | "lookup_symbol_in_objfile (...) = %s%s\n", | |
1930 | result != NULL | |
1931 | ? host_address_to_string (result) | |
1932 | : "NULL", | |
1933 | result != NULL ? " (via quick fns)" : ""); | |
1934 | } | |
af3768e9 DE |
1935 | return result; |
1936 | } | |
1937 | ||
1938 | /* See symtab.h. */ | |
1939 | ||
1940 | struct symbol * | |
1941 | lookup_static_symbol (const char *name, const domain_enum domain) | |
1942 | { | |
1943 | struct objfile *objfile; | |
1944 | struct symbol *result; | |
1945 | ||
1946 | ALL_OBJFILES (objfile) | |
1947 | { | |
1948 | result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain); | |
1949 | if (result != NULL) | |
1950 | return result; | |
1951 | } | |
1952 | ||
1953 | return NULL; | |
1954 | } | |
1955 | ||
19630284 JB |
1956 | /* Private data to be used with lookup_symbol_global_iterator_cb. */ |
1957 | ||
1958 | struct global_sym_lookup_data | |
1959 | { | |
1960 | /* The name of the symbol we are searching for. */ | |
1961 | const char *name; | |
1962 | ||
1963 | /* The domain to use for our search. */ | |
1964 | domain_enum domain; | |
1965 | ||
1966 | /* The field where the callback should store the symbol if found. | |
1967 | It should be initialized to NULL before the search is started. */ | |
1968 | struct symbol *result; | |
1969 | }; | |
1970 | ||
1971 | /* A callback function for gdbarch_iterate_over_objfiles_in_search_order. | |
1972 | It searches by name for a symbol in the GLOBAL_BLOCK of the given | |
1973 | OBJFILE. The arguments for the search are passed via CB_DATA, | |
1974 | which in reality is a pointer to struct global_sym_lookup_data. */ | |
1975 | ||
1976 | static int | |
1977 | lookup_symbol_global_iterator_cb (struct objfile *objfile, | |
1978 | void *cb_data) | |
1979 | { | |
1980 | struct global_sym_lookup_data *data = | |
1981 | (struct global_sym_lookup_data *) cb_data; | |
1982 | ||
1983 | gdb_assert (data->result == NULL); | |
1984 | ||
af3768e9 DE |
1985 | data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, |
1986 | data->name, data->domain); | |
19630284 JB |
1987 | |
1988 | /* If we found a match, tell the iterator to stop. Otherwise, | |
1989 | keep going. */ | |
1990 | return (data->result != NULL); | |
1991 | } | |
1992 | ||
cf901d3b | 1993 | /* See symtab.h. */ |
5f9a71c3 DC |
1994 | |
1995 | struct symbol * | |
08724ab7 | 1996 | lookup_global_symbol (const char *name, |
3a40aaa0 | 1997 | const struct block *block, |
21b556f4 | 1998 | const domain_enum domain) |
5f9a71c3 | 1999 | { |
3a40aaa0 UW |
2000 | struct symbol *sym = NULL; |
2001 | struct objfile *objfile = NULL; | |
19630284 | 2002 | struct global_sym_lookup_data lookup_data; |
3a40aaa0 UW |
2003 | |
2004 | /* Call library-specific lookup procedure. */ | |
67ff19f7 JB |
2005 | objfile = lookup_objfile_from_block (block); |
2006 | if (objfile != NULL) | |
2007 | sym = solib_global_lookup (objfile, name, domain); | |
3a40aaa0 UW |
2008 | if (sym != NULL) |
2009 | return sym; | |
5f9a71c3 | 2010 | |
19630284 JB |
2011 | memset (&lookup_data, 0, sizeof (lookup_data)); |
2012 | lookup_data.name = name; | |
2013 | lookup_data.domain = domain; | |
2014 | gdbarch_iterate_over_objfiles_in_search_order | |
f5656ead | 2015 | (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (), |
19630284 | 2016 | lookup_symbol_global_iterator_cb, &lookup_data, objfile); |
5f9a71c3 | 2017 | |
19630284 | 2018 | return lookup_data.result; |
5f9a71c3 DC |
2019 | } |
2020 | ||
4186eb54 KS |
2021 | int |
2022 | symbol_matches_domain (enum language symbol_language, | |
2023 | domain_enum symbol_domain, | |
2024 | domain_enum domain) | |
2025 | { | |
2026 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
2027 | A Java class declaration also defines a typedef for the class. | |
2028 | Similarly, any Ada type declaration implicitly defines a typedef. */ | |
2029 | if (symbol_language == language_cplus | |
2030 | || symbol_language == language_d | |
2031 | || symbol_language == language_java | |
2032 | || symbol_language == language_ada) | |
2033 | { | |
2034 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
2035 | && symbol_domain == STRUCT_DOMAIN) | |
2036 | return 1; | |
2037 | } | |
2038 | /* For all other languages, strict match is required. */ | |
2039 | return (symbol_domain == domain); | |
2040 | } | |
2041 | ||
cf901d3b | 2042 | /* See symtab.h. */ |
c906108c | 2043 | |
ccefe4c4 TT |
2044 | struct type * |
2045 | lookup_transparent_type (const char *name) | |
c906108c | 2046 | { |
ccefe4c4 TT |
2047 | return current_language->la_lookup_transparent_type (name); |
2048 | } | |
9af17804 | 2049 | |
ccefe4c4 TT |
2050 | /* A helper for basic_lookup_transparent_type that interfaces with the |
2051 | "quick" symbol table functions. */ | |
357e46e7 | 2052 | |
ccefe4c4 | 2053 | static struct type * |
f88cb4b6 | 2054 | basic_lookup_transparent_type_quick (struct objfile *objfile, int block_index, |
ccefe4c4 TT |
2055 | const char *name) |
2056 | { | |
43f3e411 | 2057 | struct compunit_symtab *cust; |
346d1dfe | 2058 | const struct blockvector *bv; |
ccefe4c4 TT |
2059 | struct block *block; |
2060 | struct symbol *sym; | |
c906108c | 2061 | |
ccefe4c4 TT |
2062 | if (!objfile->sf) |
2063 | return NULL; | |
43f3e411 DE |
2064 | cust = objfile->sf->qf->lookup_symbol (objfile, block_index, name, |
2065 | STRUCT_DOMAIN); | |
2066 | if (cust == NULL) | |
ccefe4c4 | 2067 | return NULL; |
c906108c | 2068 | |
43f3e411 | 2069 | bv = COMPUNIT_BLOCKVECTOR (cust); |
f88cb4b6 | 2070 | block = BLOCKVECTOR_BLOCK (bv, block_index); |
16b2eaa1 | 2071 | sym = block_lookup_symbol (block, name, STRUCT_DOMAIN); |
ccefe4c4 | 2072 | if (!sym) |
43f3e411 | 2073 | error_in_psymtab_expansion (block_index, name, cust); |
08c23b0d | 2074 | |
ccefe4c4 TT |
2075 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
2076 | return SYMBOL_TYPE (sym); | |
c906108c | 2077 | |
ccefe4c4 | 2078 | return NULL; |
b368761e | 2079 | } |
c906108c | 2080 | |
b368761e DC |
2081 | /* The standard implementation of lookup_transparent_type. This code |
2082 | was modeled on lookup_symbol -- the parts not relevant to looking | |
2083 | up types were just left out. In particular it's assumed here that | |
cf901d3b | 2084 | types are available in STRUCT_DOMAIN and only in file-static or |
b368761e | 2085 | global blocks. */ |
c906108c SS |
2086 | |
2087 | struct type * | |
b368761e | 2088 | basic_lookup_transparent_type (const char *name) |
c906108c | 2089 | { |
52f0bd74 | 2090 | struct symbol *sym; |
43f3e411 | 2091 | struct compunit_symtab *cust; |
346d1dfe | 2092 | const struct blockvector *bv; |
52f0bd74 AC |
2093 | struct objfile *objfile; |
2094 | struct block *block; | |
ccefe4c4 | 2095 | struct type *t; |
c906108c SS |
2096 | |
2097 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 2098 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
2099 | of the desired name as a global, then do psymtab-to-symtab |
2100 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 2101 | |
58b6ab13 | 2102 | ALL_OBJFILES (objfile) |
c5aa993b | 2103 | { |
43f3e411 | 2104 | ALL_OBJFILE_COMPUNITS (objfile, cust) |
d790cf0a | 2105 | { |
43f3e411 | 2106 | bv = COMPUNIT_BLOCKVECTOR (cust); |
d790cf0a | 2107 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
16b2eaa1 | 2108 | sym = block_lookup_symbol (block, name, STRUCT_DOMAIN); |
d790cf0a DE |
2109 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
2110 | { | |
2111 | return SYMBOL_TYPE (sym); | |
2112 | } | |
2113 | } | |
c5aa993b | 2114 | } |
c906108c | 2115 | |
ccefe4c4 | 2116 | ALL_OBJFILES (objfile) |
c5aa993b | 2117 | { |
ccefe4c4 TT |
2118 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); |
2119 | if (t) | |
2120 | return t; | |
c5aa993b | 2121 | } |
c906108c SS |
2122 | |
2123 | /* Now search the static file-level symbols. | |
2124 | Not strictly correct, but more useful than an error. | |
2125 | Do the symtab's first, then | |
c378eb4e | 2126 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 2127 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 2128 | conversion on the fly and return the found symbol. */ |
c906108c | 2129 | |
54ec275a | 2130 | ALL_OBJFILES (objfile) |
c5aa993b | 2131 | { |
43f3e411 | 2132 | ALL_OBJFILE_COMPUNITS (objfile, cust) |
c5aa993b | 2133 | { |
43f3e411 | 2134 | bv = COMPUNIT_BLOCKVECTOR (cust); |
54ec275a | 2135 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
16b2eaa1 | 2136 | sym = block_lookup_symbol (block, name, STRUCT_DOMAIN); |
54ec275a KS |
2137 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
2138 | { | |
2139 | return SYMBOL_TYPE (sym); | |
2140 | } | |
c5aa993b JM |
2141 | } |
2142 | } | |
c906108c | 2143 | |
ccefe4c4 | 2144 | ALL_OBJFILES (objfile) |
c5aa993b | 2145 | { |
ccefe4c4 TT |
2146 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); |
2147 | if (t) | |
2148 | return t; | |
c5aa993b | 2149 | } |
ccefe4c4 | 2150 | |
c906108c SS |
2151 | return (struct type *) 0; |
2152 | } | |
2153 | ||
4eeaa230 | 2154 | /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK. |
f8eba3c6 TT |
2155 | |
2156 | For each symbol that matches, CALLBACK is called. The symbol and | |
2157 | DATA are passed to the callback. | |
2158 | ||
2159 | If CALLBACK returns zero, the iteration ends. Otherwise, the | |
4eeaa230 | 2160 | search continues. */ |
f8eba3c6 TT |
2161 | |
2162 | void | |
2163 | iterate_over_symbols (const struct block *block, const char *name, | |
2164 | const domain_enum domain, | |
8e704927 | 2165 | symbol_found_callback_ftype *callback, |
f8eba3c6 TT |
2166 | void *data) |
2167 | { | |
4eeaa230 DE |
2168 | struct block_iterator iter; |
2169 | struct symbol *sym; | |
f8eba3c6 | 2170 | |
358d6ab3 | 2171 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, name, iter, sym) |
4eeaa230 | 2172 | { |
4186eb54 KS |
2173 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
2174 | SYMBOL_DOMAIN (sym), domain)) | |
f8eba3c6 | 2175 | { |
4eeaa230 DE |
2176 | if (!callback (sym, data)) |
2177 | return; | |
f8eba3c6 | 2178 | } |
f8eba3c6 TT |
2179 | } |
2180 | } | |
2181 | ||
43f3e411 DE |
2182 | /* Find the compunit symtab associated with PC and SECTION. |
2183 | This will read in debug info as necessary. */ | |
c906108c | 2184 | |
43f3e411 DE |
2185 | struct compunit_symtab * |
2186 | find_pc_sect_compunit_symtab (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 2187 | { |
43f3e411 DE |
2188 | struct compunit_symtab *cust; |
2189 | struct compunit_symtab *best_cust = NULL; | |
52f0bd74 | 2190 | struct objfile *objfile; |
c906108c | 2191 | CORE_ADDR distance = 0; |
77e371c0 | 2192 | struct bound_minimal_symbol msymbol; |
8a48e967 DJ |
2193 | |
2194 | /* If we know that this is not a text address, return failure. This is | |
2195 | necessary because we loop based on the block's high and low code | |
2196 | addresses, which do not include the data ranges, and because | |
2197 | we call find_pc_sect_psymtab which has a similar restriction based | |
2198 | on the partial_symtab's texthigh and textlow. */ | |
77e371c0 TT |
2199 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
2200 | if (msymbol.minsym | |
2201 | && (MSYMBOL_TYPE (msymbol.minsym) == mst_data | |
2202 | || MSYMBOL_TYPE (msymbol.minsym) == mst_bss | |
2203 | || MSYMBOL_TYPE (msymbol.minsym) == mst_abs | |
2204 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_data | |
2205 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_bss)) | |
8a48e967 | 2206 | return NULL; |
c906108c SS |
2207 | |
2208 | /* Search all symtabs for the one whose file contains our address, and which | |
2209 | is the smallest of all the ones containing the address. This is designed | |
2210 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2211 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2212 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2213 | ||
2214 | This happens for native ecoff format, where code from included files | |
c378eb4e | 2215 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
2216 | been read in already via the dependency mechanism. |
2217 | It might be swifter to create several symtabs with the same name | |
2218 | like xcoff does (I'm not sure). | |
2219 | ||
2220 | It also happens for objfiles that have their functions reordered. | |
2221 | For these, the symtab we are looking for is not necessarily read in. */ | |
2222 | ||
43f3e411 | 2223 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 2224 | { |
43f3e411 DE |
2225 | struct block *b; |
2226 | const struct blockvector *bv; | |
2227 | ||
2228 | bv = COMPUNIT_BLOCKVECTOR (cust); | |
c5aa993b | 2229 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
c906108c | 2230 | |
c5aa993b | 2231 | if (BLOCK_START (b) <= pc |
c5aa993b | 2232 | && BLOCK_END (b) > pc |
c5aa993b JM |
2233 | && (distance == 0 |
2234 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2235 | { | |
2236 | /* For an objfile that has its functions reordered, | |
2237 | find_pc_psymtab will find the proper partial symbol table | |
2238 | and we simply return its corresponding symtab. */ | |
2239 | /* In order to better support objfiles that contain both | |
2240 | stabs and coff debugging info, we continue on if a psymtab | |
c378eb4e | 2241 | can't be found. */ |
ccefe4c4 | 2242 | if ((objfile->flags & OBJF_REORDERED) && objfile->sf) |
c5aa993b | 2243 | { |
43f3e411 | 2244 | struct compunit_symtab *result; |
433759f7 | 2245 | |
ccefe4c4 | 2246 | result |
43f3e411 DE |
2247 | = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2248 | msymbol, | |
2249 | pc, section, | |
2250 | 0); | |
2251 | if (result != NULL) | |
ccefe4c4 | 2252 | return result; |
c5aa993b JM |
2253 | } |
2254 | if (section != 0) | |
2255 | { | |
8157b174 | 2256 | struct block_iterator iter; |
261397f8 | 2257 | struct symbol *sym = NULL; |
c906108c | 2258 | |
de4f826b | 2259 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2260 | { |
261397f8 | 2261 | fixup_symbol_section (sym, objfile); |
e27d198c TT |
2262 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, sym), |
2263 | section)) | |
c5aa993b JM |
2264 | break; |
2265 | } | |
de4f826b | 2266 | if (sym == NULL) |
c378eb4e MS |
2267 | continue; /* No symbol in this symtab matches |
2268 | section. */ | |
c5aa993b JM |
2269 | } |
2270 | distance = BLOCK_END (b) - BLOCK_START (b); | |
43f3e411 | 2271 | best_cust = cust; |
c5aa993b JM |
2272 | } |
2273 | } | |
c906108c | 2274 | |
43f3e411 DE |
2275 | if (best_cust != NULL) |
2276 | return best_cust; | |
c906108c | 2277 | |
072cabfe DE |
2278 | /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */ |
2279 | ||
ccefe4c4 TT |
2280 | ALL_OBJFILES (objfile) |
2281 | { | |
43f3e411 | 2282 | struct compunit_symtab *result; |
433759f7 | 2283 | |
ccefe4c4 TT |
2284 | if (!objfile->sf) |
2285 | continue; | |
43f3e411 DE |
2286 | result = objfile->sf->qf->find_pc_sect_compunit_symtab (objfile, |
2287 | msymbol, | |
2288 | pc, section, | |
2289 | 1); | |
2290 | if (result != NULL) | |
ccefe4c4 TT |
2291 | return result; |
2292 | } | |
2293 | ||
2294 | return NULL; | |
c906108c SS |
2295 | } |
2296 | ||
43f3e411 DE |
2297 | /* Find the compunit symtab associated with PC. |
2298 | This will read in debug info as necessary. | |
2299 | Backward compatibility, no section. */ | |
c906108c | 2300 | |
43f3e411 DE |
2301 | struct compunit_symtab * |
2302 | find_pc_compunit_symtab (CORE_ADDR pc) | |
c906108c | 2303 | { |
43f3e411 | 2304 | return find_pc_sect_compunit_symtab (pc, find_pc_mapped_section (pc)); |
c906108c | 2305 | } |
c906108c | 2306 | \f |
c5aa993b | 2307 | |
7e73cedf | 2308 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
2309 | Return a structure containing a symtab pointer, a line number, |
2310 | and a pc range for the entire source line. | |
2311 | The value's .pc field is NOT the specified pc. | |
2312 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
2313 | use the line that ends there. Otherwise, in that case, the line | |
2314 | that begins there is used. */ | |
2315 | ||
2316 | /* The big complication here is that a line may start in one file, and end just | |
2317 | before the start of another file. This usually occurs when you #include | |
2318 | code in the middle of a subroutine. To properly find the end of a line's PC | |
2319 | range, we must search all symtabs associated with this compilation unit, and | |
2320 | find the one whose first PC is closer than that of the next line in this | |
2321 | symtab. */ | |
2322 | ||
2323 | /* If it's worth the effort, we could be using a binary search. */ | |
2324 | ||
2325 | struct symtab_and_line | |
714835d5 | 2326 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c | 2327 | { |
43f3e411 DE |
2328 | struct compunit_symtab *cust; |
2329 | struct symtab *iter_s; | |
52f0bd74 AC |
2330 | struct linetable *l; |
2331 | int len; | |
2332 | int i; | |
2333 | struct linetable_entry *item; | |
c906108c | 2334 | struct symtab_and_line val; |
346d1dfe | 2335 | const struct blockvector *bv; |
7cbd4a93 | 2336 | struct bound_minimal_symbol msymbol; |
c906108c SS |
2337 | |
2338 | /* Info on best line seen so far, and where it starts, and its file. */ | |
2339 | ||
2340 | struct linetable_entry *best = NULL; | |
2341 | CORE_ADDR best_end = 0; | |
2342 | struct symtab *best_symtab = 0; | |
2343 | ||
2344 | /* Store here the first line number | |
2345 | of a file which contains the line at the smallest pc after PC. | |
2346 | If we don't find a line whose range contains PC, | |
2347 | we will use a line one less than this, | |
2348 | with a range from the start of that file to the first line's pc. */ | |
2349 | struct linetable_entry *alt = NULL; | |
c906108c SS |
2350 | |
2351 | /* Info on best line seen in this file. */ | |
2352 | ||
2353 | struct linetable_entry *prev; | |
2354 | ||
2355 | /* If this pc is not from the current frame, | |
2356 | it is the address of the end of a call instruction. | |
2357 | Quite likely that is the start of the following statement. | |
2358 | But what we want is the statement containing the instruction. | |
2359 | Fudge the pc to make sure we get that. */ | |
2360 | ||
fe39c653 | 2361 | init_sal (&val); /* initialize to zeroes */ |
c906108c | 2362 | |
6c95b8df PA |
2363 | val.pspace = current_program_space; |
2364 | ||
b77b1eb7 JB |
2365 | /* It's tempting to assume that, if we can't find debugging info for |
2366 | any function enclosing PC, that we shouldn't search for line | |
2367 | number info, either. However, GAS can emit line number info for | |
2368 | assembly files --- very helpful when debugging hand-written | |
2369 | assembly code. In such a case, we'd have no debug info for the | |
2370 | function, but we would have line info. */ | |
648f4f79 | 2371 | |
c906108c SS |
2372 | if (notcurrent) |
2373 | pc -= 1; | |
2374 | ||
c5aa993b | 2375 | /* elz: added this because this function returned the wrong |
c906108c | 2376 | information if the pc belongs to a stub (import/export) |
c378eb4e | 2377 | to call a shlib function. This stub would be anywhere between |
9af17804 | 2378 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
2379 | taken to be the one of the line before the pc. */ |
2380 | ||
c906108c | 2381 | /* RT: Further explanation: |
c5aa993b | 2382 | |
c906108c SS |
2383 | * We have stubs (trampolines) inserted between procedures. |
2384 | * | |
2385 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
2386 | * exists in the main image. | |
2387 | * | |
2388 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 2389 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
2390 | * the others appear as text. E.g.: |
2391 | * | |
9af17804 | 2392 | * Minimal symbol table for main image |
c906108c SS |
2393 | * main: code for main (text symbol) |
2394 | * shr1: stub (trampoline symbol) | |
2395 | * foo: code for foo (text symbol) | |
2396 | * ... | |
2397 | * Minimal symbol table for "shr1" image: | |
2398 | * ... | |
2399 | * shr1: code for shr1 (text symbol) | |
2400 | * ... | |
2401 | * | |
2402 | * So the code below is trying to detect if we are in the stub | |
2403 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
2404 | * and if found, do the symbolization from the real-code address | |
2405 | * rather than the stub address. | |
2406 | * | |
2407 | * Assumptions being made about the minimal symbol table: | |
2408 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 2409 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 2410 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
2411 | * symbol (the "foo" text symbol for example) and will not |
2412 | * return the trampoline. | |
2413 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
2414 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 2415 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
2416 | * check for the address being the same, to avoid an |
2417 | * infinite recursion. | |
2418 | */ | |
c5aa993b | 2419 | msymbol = lookup_minimal_symbol_by_pc (pc); |
7cbd4a93 TT |
2420 | if (msymbol.minsym != NULL) |
2421 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
c5aa993b | 2422 | { |
77e371c0 | 2423 | struct bound_minimal_symbol mfunsym |
efd66ac6 | 2424 | = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
77e371c0 TT |
2425 | NULL); |
2426 | ||
2427 | if (mfunsym.minsym == NULL) | |
c5aa993b JM |
2428 | /* I eliminated this warning since it is coming out |
2429 | * in the following situation: | |
2430 | * gdb shmain // test program with shared libraries | |
2431 | * (gdb) break shr1 // function in shared lib | |
2432 | * Warning: In stub for ... | |
9af17804 | 2433 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
2434 | * so of course we can't find the real func/line info, |
2435 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 2436 | * So I commented out the warning. RT */ |
3e43a32a | 2437 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
2438 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
2439 | ; | |
c5aa993b | 2440 | /* fall through */ |
77e371c0 TT |
2441 | else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) |
2442 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 2443 | /* Avoid infinite recursion */ |
c378eb4e | 2444 | /* See above comment about why warning is commented out. */ |
3e43a32a | 2445 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
2446 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
2447 | ; | |
c5aa993b JM |
2448 | /* fall through */ |
2449 | else | |
77e371c0 | 2450 | return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 2451 | } |
c906108c SS |
2452 | |
2453 | ||
43f3e411 DE |
2454 | cust = find_pc_sect_compunit_symtab (pc, section); |
2455 | if (cust == NULL) | |
c906108c | 2456 | { |
c378eb4e | 2457 | /* If no symbol information, return previous pc. */ |
c906108c SS |
2458 | if (notcurrent) |
2459 | pc++; | |
2460 | val.pc = pc; | |
2461 | return val; | |
2462 | } | |
2463 | ||
43f3e411 | 2464 | bv = COMPUNIT_BLOCKVECTOR (cust); |
c906108c SS |
2465 | |
2466 | /* Look at all the symtabs that share this blockvector. | |
2467 | They all have the same apriori range, that we found was right; | |
2468 | but they have different line tables. */ | |
2469 | ||
43f3e411 | 2470 | ALL_COMPUNIT_FILETABS (cust, iter_s) |
c906108c SS |
2471 | { |
2472 | /* Find the best line in this symtab. */ | |
43f3e411 | 2473 | l = SYMTAB_LINETABLE (iter_s); |
c906108c | 2474 | if (!l) |
c5aa993b | 2475 | continue; |
c906108c SS |
2476 | len = l->nitems; |
2477 | if (len <= 0) | |
2478 | { | |
2479 | /* I think len can be zero if the symtab lacks line numbers | |
2480 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
2481 | I'm not sure which, and maybe it depends on the symbol | |
2482 | reader). */ | |
2483 | continue; | |
2484 | } | |
2485 | ||
2486 | prev = NULL; | |
c378eb4e | 2487 | item = l->item; /* Get first line info. */ |
c906108c SS |
2488 | |
2489 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 2490 | If so, record this file, and its first line, as best alternate. */ |
c906108c | 2491 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
c656bca5 | 2492 | alt = item; |
c906108c SS |
2493 | |
2494 | for (i = 0; i < len; i++, item++) | |
2495 | { | |
2496 | /* Leave prev pointing to the linetable entry for the last line | |
2497 | that started at or before PC. */ | |
2498 | if (item->pc > pc) | |
2499 | break; | |
2500 | ||
2501 | prev = item; | |
2502 | } | |
2503 | ||
2504 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
2505 | item points at the next line. If we ran off the end of the linetable |
2506 | (pc >= start of the last line), then prev == item. If pc < start of | |
2507 | the first line, prev will not be set. */ | |
c906108c SS |
2508 | |
2509 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
2510 | If so, record this file, and its best line, as best so far. Don't |
2511 | save prev if it represents the end of a function (i.e. line number | |
2512 | 0) instead of a real line. */ | |
c906108c | 2513 | |
083ae935 | 2514 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
2515 | { |
2516 | best = prev; | |
43f3e411 | 2517 | best_symtab = iter_s; |
25d53da1 KB |
2518 | |
2519 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
2520 | if (best_end <= best->pc) | |
2521 | best_end = 0; | |
c906108c | 2522 | } |
25d53da1 KB |
2523 | |
2524 | /* If another line (denoted by ITEM) is in the linetable and its | |
2525 | PC is after BEST's PC, but before the current BEST_END, then | |
2526 | use ITEM's PC as the new best_end. */ | |
2527 | if (best && i < len && item->pc > best->pc | |
2528 | && (best_end == 0 || best_end > item->pc)) | |
2529 | best_end = item->pc; | |
c906108c SS |
2530 | } |
2531 | ||
2532 | if (!best_symtab) | |
2533 | { | |
e86e87f7 DJ |
2534 | /* If we didn't find any line number info, just return zeros. |
2535 | We used to return alt->line - 1 here, but that could be | |
2536 | anywhere; if we don't have line number info for this PC, | |
2537 | don't make some up. */ | |
2538 | val.pc = pc; | |
c906108c | 2539 | } |
e8717518 FF |
2540 | else if (best->line == 0) |
2541 | { | |
2542 | /* If our best fit is in a range of PC's for which no line | |
2543 | number info is available (line number is zero) then we didn't | |
c378eb4e | 2544 | find any valid line information. */ |
e8717518 FF |
2545 | val.pc = pc; |
2546 | } | |
c906108c SS |
2547 | else |
2548 | { | |
2549 | val.symtab = best_symtab; | |
2550 | val.line = best->line; | |
2551 | val.pc = best->pc; | |
2552 | if (best_end && (!alt || best_end < alt->pc)) | |
2553 | val.end = best_end; | |
2554 | else if (alt) | |
2555 | val.end = alt->pc; | |
2556 | else | |
2557 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
2558 | } | |
2559 | val.section = section; | |
2560 | return val; | |
2561 | } | |
2562 | ||
c378eb4e | 2563 | /* Backward compatibility (no section). */ |
c906108c SS |
2564 | |
2565 | struct symtab_and_line | |
fba45db2 | 2566 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 2567 | { |
714835d5 | 2568 | struct obj_section *section; |
c906108c SS |
2569 | |
2570 | section = find_pc_overlay (pc); | |
2571 | if (pc_in_unmapped_range (pc, section)) | |
2572 | pc = overlay_mapped_address (pc, section); | |
2573 | return find_pc_sect_line (pc, section, notcurrent); | |
2574 | } | |
34248c3a DE |
2575 | |
2576 | /* See symtab.h. */ | |
2577 | ||
2578 | struct symtab * | |
2579 | find_pc_line_symtab (CORE_ADDR pc) | |
2580 | { | |
2581 | struct symtab_and_line sal; | |
2582 | ||
2583 | /* This always passes zero for NOTCURRENT to find_pc_line. | |
2584 | There are currently no callers that ever pass non-zero. */ | |
2585 | sal = find_pc_line (pc, 0); | |
2586 | return sal.symtab; | |
2587 | } | |
c906108c | 2588 | \f |
c906108c SS |
2589 | /* Find line number LINE in any symtab whose name is the same as |
2590 | SYMTAB. | |
2591 | ||
2592 | If found, return the symtab that contains the linetable in which it was | |
2593 | found, set *INDEX to the index in the linetable of the best entry | |
2594 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
2595 | exact match. | |
2596 | ||
2597 | If not found, return NULL. */ | |
2598 | ||
50641945 | 2599 | struct symtab * |
433759f7 MS |
2600 | find_line_symtab (struct symtab *symtab, int line, |
2601 | int *index, int *exact_match) | |
c906108c | 2602 | { |
6f43c46f | 2603 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
2604 | |
2605 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
2606 | so far seen. */ | |
2607 | ||
2608 | int best_index; | |
2609 | struct linetable *best_linetable; | |
2610 | struct symtab *best_symtab; | |
2611 | ||
2612 | /* First try looking it up in the given symtab. */ | |
8435453b | 2613 | best_linetable = SYMTAB_LINETABLE (symtab); |
c906108c | 2614 | best_symtab = symtab; |
f8eba3c6 | 2615 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
2616 | if (best_index < 0 || !exact) |
2617 | { | |
2618 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
2619 | another symtab with the same name. In the case of xcoff, |
2620 | multiple csects for one source file (produced by IBM's FORTRAN | |
2621 | compiler) produce multiple symtabs (this is unavoidable | |
2622 | assuming csects can be at arbitrary places in memory and that | |
2623 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
2624 | |
2625 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
2626 | or 0 if none has been seen so far. |
2627 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
2628 | int best; |
2629 | ||
2630 | struct objfile *objfile; | |
43f3e411 | 2631 | struct compunit_symtab *cu; |
c906108c SS |
2632 | struct symtab *s; |
2633 | ||
2634 | if (best_index >= 0) | |
2635 | best = best_linetable->item[best_index].line; | |
2636 | else | |
2637 | best = 0; | |
2638 | ||
ccefe4c4 | 2639 | ALL_OBJFILES (objfile) |
51432cca | 2640 | { |
ccefe4c4 | 2641 | if (objfile->sf) |
652a8996 | 2642 | objfile->sf->qf->expand_symtabs_with_fullname (objfile, |
05cba821 | 2643 | symtab_to_fullname (symtab)); |
51432cca CES |
2644 | } |
2645 | ||
43f3e411 | 2646 | ALL_FILETABS (objfile, cu, s) |
c5aa993b JM |
2647 | { |
2648 | struct linetable *l; | |
2649 | int ind; | |
c906108c | 2650 | |
3ffc00b8 | 2651 | if (FILENAME_CMP (symtab->filename, s->filename) != 0) |
c5aa993b | 2652 | continue; |
d180bcbd JK |
2653 | if (FILENAME_CMP (symtab_to_fullname (symtab), |
2654 | symtab_to_fullname (s)) != 0) | |
3ffc00b8 | 2655 | continue; |
8435453b | 2656 | l = SYMTAB_LINETABLE (s); |
f8eba3c6 | 2657 | ind = find_line_common (l, line, &exact, 0); |
c5aa993b JM |
2658 | if (ind >= 0) |
2659 | { | |
2660 | if (exact) | |
2661 | { | |
2662 | best_index = ind; | |
2663 | best_linetable = l; | |
2664 | best_symtab = s; | |
2665 | goto done; | |
2666 | } | |
2667 | if (best == 0 || l->item[ind].line < best) | |
2668 | { | |
2669 | best = l->item[ind].line; | |
2670 | best_index = ind; | |
2671 | best_linetable = l; | |
2672 | best_symtab = s; | |
2673 | } | |
2674 | } | |
2675 | } | |
c906108c | 2676 | } |
c5aa993b | 2677 | done: |
c906108c SS |
2678 | if (best_index < 0) |
2679 | return NULL; | |
2680 | ||
2681 | if (index) | |
2682 | *index = best_index; | |
2683 | if (exact_match) | |
2684 | *exact_match = exact; | |
2685 | ||
2686 | return best_symtab; | |
2687 | } | |
f8eba3c6 TT |
2688 | |
2689 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
2690 | exactly match LINE. Returns NULL if there are no exact matches, | |
2691 | but updates BEST_ITEM in this case. */ | |
2692 | ||
2693 | VEC (CORE_ADDR) * | |
2694 | find_pcs_for_symtab_line (struct symtab *symtab, int line, | |
2695 | struct linetable_entry **best_item) | |
2696 | { | |
c656bca5 | 2697 | int start = 0; |
f8eba3c6 TT |
2698 | VEC (CORE_ADDR) *result = NULL; |
2699 | ||
2700 | /* First, collect all the PCs that are at this line. */ | |
2701 | while (1) | |
2702 | { | |
2703 | int was_exact; | |
2704 | int idx; | |
2705 | ||
8435453b DE |
2706 | idx = find_line_common (SYMTAB_LINETABLE (symtab), line, &was_exact, |
2707 | start); | |
f8eba3c6 TT |
2708 | if (idx < 0) |
2709 | break; | |
2710 | ||
2711 | if (!was_exact) | |
2712 | { | |
8435453b | 2713 | struct linetable_entry *item = &SYMTAB_LINETABLE (symtab)->item[idx]; |
f8eba3c6 TT |
2714 | |
2715 | if (*best_item == NULL || item->line < (*best_item)->line) | |
2716 | *best_item = item; | |
2717 | ||
2718 | break; | |
2719 | } | |
2720 | ||
8435453b DE |
2721 | VEC_safe_push (CORE_ADDR, result, |
2722 | SYMTAB_LINETABLE (symtab)->item[idx].pc); | |
f8eba3c6 TT |
2723 | start = idx + 1; |
2724 | } | |
2725 | ||
2726 | return result; | |
2727 | } | |
2728 | ||
c906108c SS |
2729 | \f |
2730 | /* Set the PC value for a given source file and line number and return true. | |
2731 | Returns zero for invalid line number (and sets the PC to 0). | |
2732 | The source file is specified with a struct symtab. */ | |
2733 | ||
2734 | int | |
fba45db2 | 2735 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
2736 | { |
2737 | struct linetable *l; | |
2738 | int ind; | |
2739 | ||
2740 | *pc = 0; | |
2741 | if (symtab == 0) | |
2742 | return 0; | |
2743 | ||
2744 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
2745 | if (symtab != NULL) | |
2746 | { | |
8435453b | 2747 | l = SYMTAB_LINETABLE (symtab); |
c906108c SS |
2748 | *pc = l->item[ind].pc; |
2749 | return 1; | |
2750 | } | |
2751 | else | |
2752 | return 0; | |
2753 | } | |
2754 | ||
2755 | /* Find the range of pc values in a line. | |
2756 | Store the starting pc of the line into *STARTPTR | |
2757 | and the ending pc (start of next line) into *ENDPTR. | |
2758 | Returns 1 to indicate success. | |
2759 | Returns 0 if could not find the specified line. */ | |
2760 | ||
2761 | int | |
fba45db2 KB |
2762 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
2763 | CORE_ADDR *endptr) | |
c906108c SS |
2764 | { |
2765 | CORE_ADDR startaddr; | |
2766 | struct symtab_and_line found_sal; | |
2767 | ||
2768 | startaddr = sal.pc; | |
c5aa993b | 2769 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
2770 | return 0; |
2771 | ||
2772 | /* This whole function is based on address. For example, if line 10 has | |
2773 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
2774 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
2775 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
2776 | This also insures that we never give a range like "starts at 0x134 | |
2777 | and ends at 0x12c". */ | |
2778 | ||
2779 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
2780 | if (found_sal.line != sal.line) | |
2781 | { | |
2782 | /* The specified line (sal) has zero bytes. */ | |
2783 | *startptr = found_sal.pc; | |
2784 | *endptr = found_sal.pc; | |
2785 | } | |
2786 | else | |
2787 | { | |
2788 | *startptr = found_sal.pc; | |
2789 | *endptr = found_sal.end; | |
2790 | } | |
2791 | return 1; | |
2792 | } | |
2793 | ||
2794 | /* Given a line table and a line number, return the index into the line | |
2795 | table for the pc of the nearest line whose number is >= the specified one. | |
2796 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 2797 | START is the index at which to start searching the line table. |
c906108c SS |
2798 | |
2799 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
2800 | ||
2801 | static int | |
aa1ee363 | 2802 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 2803 | int *exact_match, int start) |
c906108c | 2804 | { |
52f0bd74 AC |
2805 | int i; |
2806 | int len; | |
c906108c SS |
2807 | |
2808 | /* BEST is the smallest linenumber > LINENO so far seen, | |
2809 | or 0 if none has been seen so far. | |
2810 | BEST_INDEX identifies the item for it. */ | |
2811 | ||
2812 | int best_index = -1; | |
2813 | int best = 0; | |
2814 | ||
b7589f7d DJ |
2815 | *exact_match = 0; |
2816 | ||
c906108c SS |
2817 | if (lineno <= 0) |
2818 | return -1; | |
2819 | if (l == 0) | |
2820 | return -1; | |
2821 | ||
2822 | len = l->nitems; | |
f8eba3c6 | 2823 | for (i = start; i < len; i++) |
c906108c | 2824 | { |
aa1ee363 | 2825 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
2826 | |
2827 | if (item->line == lineno) | |
2828 | { | |
2829 | /* Return the first (lowest address) entry which matches. */ | |
2830 | *exact_match = 1; | |
2831 | return i; | |
2832 | } | |
2833 | ||
2834 | if (item->line > lineno && (best == 0 || item->line < best)) | |
2835 | { | |
2836 | best = item->line; | |
2837 | best_index = i; | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
2842 | return best_index; |
2843 | } | |
2844 | ||
2845 | int | |
fba45db2 | 2846 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
2847 | { |
2848 | struct symtab_and_line sal; | |
433759f7 | 2849 | |
c906108c SS |
2850 | sal = find_pc_line (pc, 0); |
2851 | *startptr = sal.pc; | |
2852 | *endptr = sal.end; | |
2853 | return sal.symtab != 0; | |
2854 | } | |
2855 | ||
aab2f208 DE |
2856 | /* Given a function symbol SYM, find the symtab and line for the start |
2857 | of the function. | |
2858 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
2859 | of real code inside the function. */ | |
2860 | ||
2861 | struct symtab_and_line | |
2862 | find_function_start_sal (struct symbol *sym, int funfirstline) | |
2863 | { | |
2864 | struct symtab_and_line sal; | |
2865 | ||
2866 | fixup_symbol_section (sym, NULL); | |
2867 | sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), | |
2868 | SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym), 0); | |
2869 | ||
2870 | /* We always should have a line for the function start address. | |
2871 | If we don't, something is odd. Create a plain SAL refering | |
2872 | just the PC and hope that skip_prologue_sal (if requested) | |
2873 | can find a line number for after the prologue. */ | |
2874 | if (sal.pc < BLOCK_START (SYMBOL_BLOCK_VALUE (sym))) | |
2875 | { | |
2876 | init_sal (&sal); | |
2877 | sal.pspace = current_program_space; | |
2878 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
2879 | sal.section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym); | |
2880 | } | |
2881 | ||
2882 | if (funfirstline) | |
2883 | skip_prologue_sal (&sal); | |
2884 | ||
2885 | return sal; | |
2886 | } | |
2887 | ||
8c7a1ee8 EZ |
2888 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
2889 | address for that function that has an entry in SYMTAB's line info | |
2890 | table. If such an entry cannot be found, return FUNC_ADDR | |
2891 | unaltered. */ | |
eca864fe | 2892 | |
70221824 | 2893 | static CORE_ADDR |
8c7a1ee8 EZ |
2894 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) |
2895 | { | |
2896 | CORE_ADDR func_start, func_end; | |
2897 | struct linetable *l; | |
952a6d41 | 2898 | int i; |
8c7a1ee8 EZ |
2899 | |
2900 | /* Give up if this symbol has no lineinfo table. */ | |
8435453b | 2901 | l = SYMTAB_LINETABLE (symtab); |
8c7a1ee8 EZ |
2902 | if (l == NULL) |
2903 | return func_addr; | |
2904 | ||
2905 | /* Get the range for the function's PC values, or give up if we | |
2906 | cannot, for some reason. */ | |
2907 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
2908 | return func_addr; | |
2909 | ||
2910 | /* Linetable entries are ordered by PC values, see the commentary in | |
2911 | symtab.h where `struct linetable' is defined. Thus, the first | |
2912 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
2913 | address we are looking for. */ | |
2914 | for (i = 0; i < l->nitems; i++) | |
2915 | { | |
2916 | struct linetable_entry *item = &(l->item[i]); | |
2917 | ||
2918 | /* Don't use line numbers of zero, they mark special entries in | |
2919 | the table. See the commentary on symtab.h before the | |
2920 | definition of struct linetable. */ | |
2921 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
2922 | return item->pc; | |
2923 | } | |
2924 | ||
2925 | return func_addr; | |
2926 | } | |
2927 | ||
059acae7 UW |
2928 | /* Adjust SAL to the first instruction past the function prologue. |
2929 | If the PC was explicitly specified, the SAL is not changed. | |
2930 | If the line number was explicitly specified, at most the SAL's PC | |
2931 | is updated. If SAL is already past the prologue, then do nothing. */ | |
eca864fe | 2932 | |
059acae7 UW |
2933 | void |
2934 | skip_prologue_sal (struct symtab_and_line *sal) | |
2935 | { | |
2936 | struct symbol *sym; | |
2937 | struct symtab_and_line start_sal; | |
2938 | struct cleanup *old_chain; | |
8be455d7 | 2939 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
2940 | struct obj_section *section; |
2941 | const char *name; | |
2942 | struct objfile *objfile; | |
2943 | struct gdbarch *gdbarch; | |
3977b71f | 2944 | const struct block *b, *function_block; |
8be455d7 | 2945 | int force_skip, skip; |
c906108c | 2946 | |
a4b411d6 | 2947 | /* Do not change the SAL if PC was specified explicitly. */ |
059acae7 UW |
2948 | if (sal->explicit_pc) |
2949 | return; | |
6c95b8df PA |
2950 | |
2951 | old_chain = save_current_space_and_thread (); | |
059acae7 | 2952 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 2953 | |
059acae7 UW |
2954 | sym = find_pc_sect_function (sal->pc, sal->section); |
2955 | if (sym != NULL) | |
bccdca4a | 2956 | { |
059acae7 UW |
2957 | fixup_symbol_section (sym, NULL); |
2958 | ||
2959 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
e27d198c | 2960 | section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym); |
059acae7 | 2961 | name = SYMBOL_LINKAGE_NAME (sym); |
aff08958 | 2962 | objfile = SYMBOL_OBJFILE (sym); |
c906108c | 2963 | } |
059acae7 UW |
2964 | else |
2965 | { | |
7c7b6655 TT |
2966 | struct bound_minimal_symbol msymbol |
2967 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 2968 | |
7c7b6655 | 2969 | if (msymbol.minsym == NULL) |
059acae7 UW |
2970 | { |
2971 | do_cleanups (old_chain); | |
2972 | return; | |
2973 | } | |
2974 | ||
7c7b6655 | 2975 | objfile = msymbol.objfile; |
77e371c0 | 2976 | pc = BMSYMBOL_VALUE_ADDRESS (msymbol); |
efd66ac6 TT |
2977 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
2978 | name = MSYMBOL_LINKAGE_NAME (msymbol.minsym); | |
059acae7 UW |
2979 | } |
2980 | ||
2981 | gdbarch = get_objfile_arch (objfile); | |
2982 | ||
8be455d7 JK |
2983 | /* Process the prologue in two passes. In the first pass try to skip the |
2984 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
2985 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
2986 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 2987 | |
8be455d7 JK |
2988 | skip = 1; |
2989 | force_skip = 1; | |
059acae7 | 2990 | |
8be455d7 JK |
2991 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
2992 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
2993 | have to be set by the caller so we use SYM instead. */ | |
43f3e411 | 2994 | if (sym && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (SYMBOL_SYMTAB (sym)))) |
8be455d7 | 2995 | force_skip = 0; |
059acae7 | 2996 | |
8be455d7 JK |
2997 | saved_pc = pc; |
2998 | do | |
c906108c | 2999 | { |
8be455d7 | 3000 | pc = saved_pc; |
4309257c | 3001 | |
8be455d7 JK |
3002 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
3003 | so that gdbarch_skip_prologue has something unique to work on. */ | |
3004 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
3005 | pc = overlay_unmapped_address (pc, section); | |
3006 | ||
3007 | /* Skip "first line" of function (which is actually its prologue). */ | |
3008 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
591a12a1 UW |
3009 | if (gdbarch_skip_entrypoint_p (gdbarch)) |
3010 | pc = gdbarch_skip_entrypoint (gdbarch, pc); | |
8be455d7 JK |
3011 | if (skip) |
3012 | pc = gdbarch_skip_prologue (gdbarch, pc); | |
3013 | ||
3014 | /* For overlays, map pc back into its mapped VMA range. */ | |
3015 | pc = overlay_mapped_address (pc, section); | |
3016 | ||
3017 | /* Calculate line number. */ | |
059acae7 | 3018 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
3019 | |
3020 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
3021 | line is still part of the same function. */ | |
3022 | if (skip && start_sal.pc != pc | |
b1d96efd JK |
3023 | && (sym ? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
3024 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
7cbd4a93 TT |
3025 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym |
3026 | == lookup_minimal_symbol_by_pc_section (pc, section).minsym))) | |
8be455d7 JK |
3027 | { |
3028 | /* First pc of next line */ | |
3029 | pc = start_sal.end; | |
3030 | /* Recalculate the line number (might not be N+1). */ | |
3031 | start_sal = find_pc_sect_line (pc, section, 0); | |
3032 | } | |
3033 | ||
3034 | /* On targets with executable formats that don't have a concept of | |
3035 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
3036 | to `__main' in `main' between the prologue and before user | |
3037 | code. */ | |
3038 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
7ccffd7c | 3039 | && name && strcmp_iw (name, "main") == 0) |
8be455d7 JK |
3040 | { |
3041 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
3042 | /* Recalculate the line number (might not be N+1). */ | |
3043 | start_sal = find_pc_sect_line (pc, section, 0); | |
3044 | force_skip = 1; | |
3045 | } | |
4309257c | 3046 | } |
8be455d7 | 3047 | while (!force_skip && skip--); |
4309257c | 3048 | |
8c7a1ee8 EZ |
3049 | /* If we still don't have a valid source line, try to find the first |
3050 | PC in the lineinfo table that belongs to the same function. This | |
3051 | happens with COFF debug info, which does not seem to have an | |
3052 | entry in lineinfo table for the code after the prologue which has | |
3053 | no direct relation to source. For example, this was found to be | |
3054 | the case with the DJGPP target using "gcc -gcoff" when the | |
3055 | compiler inserted code after the prologue to make sure the stack | |
3056 | is aligned. */ | |
8be455d7 | 3057 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 EZ |
3058 | { |
3059 | pc = skip_prologue_using_lineinfo (pc, SYMBOL_SYMTAB (sym)); | |
3060 | /* Recalculate the line number. */ | |
059acae7 | 3061 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
3062 | } |
3063 | ||
059acae7 UW |
3064 | do_cleanups (old_chain); |
3065 | ||
3066 | /* If we're already past the prologue, leave SAL unchanged. Otherwise | |
3067 | forward SAL to the end of the prologue. */ | |
3068 | if (sal->pc >= pc) | |
3069 | return; | |
3070 | ||
3071 | sal->pc = pc; | |
3072 | sal->section = section; | |
3073 | ||
3074 | /* Unless the explicit_line flag was set, update the SAL line | |
3075 | and symtab to correspond to the modified PC location. */ | |
3076 | if (sal->explicit_line) | |
3077 | return; | |
3078 | ||
3079 | sal->symtab = start_sal.symtab; | |
3080 | sal->line = start_sal.line; | |
3081 | sal->end = start_sal.end; | |
c906108c | 3082 | |
edb3359d DJ |
3083 | /* Check if we are now inside an inlined function. If we can, |
3084 | use the call site of the function instead. */ | |
059acae7 | 3085 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
3086 | function_block = NULL; |
3087 | while (b != NULL) | |
3088 | { | |
3089 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3090 | function_block = b; | |
3091 | else if (BLOCK_FUNCTION (b) != NULL) | |
3092 | break; | |
3093 | b = BLOCK_SUPERBLOCK (b); | |
3094 | } | |
3095 | if (function_block != NULL | |
3096 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
3097 | { | |
059acae7 UW |
3098 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
3099 | sal->symtab = SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block)); | |
edb3359d | 3100 | } |
c906108c | 3101 | } |
50641945 | 3102 | |
f1f58506 DE |
3103 | /* Given PC at the function's start address, attempt to find the |
3104 | prologue end using SAL information. Return zero if the skip fails. | |
3105 | ||
3106 | A non-optimized prologue traditionally has one SAL for the function | |
3107 | and a second for the function body. A single line function has | |
3108 | them both pointing at the same line. | |
3109 | ||
3110 | An optimized prologue is similar but the prologue may contain | |
3111 | instructions (SALs) from the instruction body. Need to skip those | |
3112 | while not getting into the function body. | |
3113 | ||
3114 | The functions end point and an increasing SAL line are used as | |
3115 | indicators of the prologue's endpoint. | |
3116 | ||
3117 | This code is based on the function refine_prologue_limit | |
3118 | (found in ia64). */ | |
3119 | ||
3120 | CORE_ADDR | |
3121 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) | |
3122 | { | |
3123 | struct symtab_and_line prologue_sal; | |
3124 | CORE_ADDR start_pc; | |
3125 | CORE_ADDR end_pc; | |
3126 | const struct block *bl; | |
3127 | ||
3128 | /* Get an initial range for the function. */ | |
3129 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
3130 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
3131 | ||
3132 | prologue_sal = find_pc_line (start_pc, 0); | |
3133 | if (prologue_sal.line != 0) | |
3134 | { | |
3135 | /* For languages other than assembly, treat two consecutive line | |
3136 | entries at the same address as a zero-instruction prologue. | |
3137 | The GNU assembler emits separate line notes for each instruction | |
3138 | in a multi-instruction macro, but compilers generally will not | |
3139 | do this. */ | |
3140 | if (prologue_sal.symtab->language != language_asm) | |
3141 | { | |
8435453b | 3142 | struct linetable *linetable = SYMTAB_LINETABLE (prologue_sal.symtab); |
f1f58506 DE |
3143 | int idx = 0; |
3144 | ||
3145 | /* Skip any earlier lines, and any end-of-sequence marker | |
3146 | from a previous function. */ | |
3147 | while (linetable->item[idx].pc != prologue_sal.pc | |
3148 | || linetable->item[idx].line == 0) | |
3149 | idx++; | |
3150 | ||
3151 | if (idx+1 < linetable->nitems | |
3152 | && linetable->item[idx+1].line != 0 | |
3153 | && linetable->item[idx+1].pc == start_pc) | |
3154 | return start_pc; | |
3155 | } | |
3156 | ||
3157 | /* If there is only one sal that covers the entire function, | |
3158 | then it is probably a single line function, like | |
3159 | "foo(){}". */ | |
3160 | if (prologue_sal.end >= end_pc) | |
3161 | return 0; | |
3162 | ||
3163 | while (prologue_sal.end < end_pc) | |
3164 | { | |
3165 | struct symtab_and_line sal; | |
3166 | ||
3167 | sal = find_pc_line (prologue_sal.end, 0); | |
3168 | if (sal.line == 0) | |
3169 | break; | |
3170 | /* Assume that a consecutive SAL for the same (or larger) | |
3171 | line mark the prologue -> body transition. */ | |
3172 | if (sal.line >= prologue_sal.line) | |
3173 | break; | |
3174 | /* Likewise if we are in a different symtab altogether | |
3175 | (e.g. within a file included via #include). */ | |
3176 | if (sal.symtab != prologue_sal.symtab) | |
3177 | break; | |
3178 | ||
3179 | /* The line number is smaller. Check that it's from the | |
3180 | same function, not something inlined. If it's inlined, | |
3181 | then there is no point comparing the line numbers. */ | |
3182 | bl = block_for_pc (prologue_sal.end); | |
3183 | while (bl) | |
3184 | { | |
3185 | if (block_inlined_p (bl)) | |
3186 | break; | |
3187 | if (BLOCK_FUNCTION (bl)) | |
3188 | { | |
3189 | bl = NULL; | |
3190 | break; | |
3191 | } | |
3192 | bl = BLOCK_SUPERBLOCK (bl); | |
3193 | } | |
3194 | if (bl != NULL) | |
3195 | break; | |
3196 | ||
3197 | /* The case in which compiler's optimizer/scheduler has | |
3198 | moved instructions into the prologue. We look ahead in | |
3199 | the function looking for address ranges whose | |
3200 | corresponding line number is less the first one that we | |
3201 | found for the function. This is more conservative then | |
3202 | refine_prologue_limit which scans a large number of SALs | |
3203 | looking for any in the prologue. */ | |
3204 | prologue_sal = sal; | |
3205 | } | |
3206 | } | |
3207 | ||
3208 | if (prologue_sal.end < end_pc) | |
3209 | /* Return the end of this line, or zero if we could not find a | |
3210 | line. */ | |
3211 | return prologue_sal.end; | |
3212 | else | |
3213 | /* Don't return END_PC, which is past the end of the function. */ | |
3214 | return prologue_sal.pc; | |
3215 | } | |
3216 | \f | |
c906108c SS |
3217 | /* If P is of the form "operator[ \t]+..." where `...' is |
3218 | some legitimate operator text, return a pointer to the | |
3219 | beginning of the substring of the operator text. | |
3220 | Otherwise, return "". */ | |
eca864fe | 3221 | |
96142726 TT |
3222 | static const char * |
3223 | operator_chars (const char *p, const char **end) | |
c906108c SS |
3224 | { |
3225 | *end = ""; | |
3226 | if (strncmp (p, "operator", 8)) | |
3227 | return *end; | |
3228 | p += 8; | |
3229 | ||
3230 | /* Don't get faked out by `operator' being part of a longer | |
3231 | identifier. */ | |
c5aa993b | 3232 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
3233 | return *end; |
3234 | ||
3235 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
3236 | while (*p == ' ' || *p == '\t') | |
3237 | p++; | |
3238 | ||
c378eb4e | 3239 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 3240 | |
c5aa993b | 3241 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 3242 | { |
96142726 | 3243 | const char *q = p + 1; |
433759f7 | 3244 | |
c5aa993b | 3245 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
3246 | q++; |
3247 | *end = q; | |
3248 | return p; | |
3249 | } | |
3250 | ||
53e8ad3d MS |
3251 | while (*p) |
3252 | switch (*p) | |
3253 | { | |
3254 | case '\\': /* regexp quoting */ | |
3255 | if (p[1] == '*') | |
3256 | { | |
3e43a32a | 3257 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
3258 | *end = p + 3; |
3259 | else /* 'operator\*' */ | |
3260 | *end = p + 2; | |
3261 | return p; | |
3262 | } | |
3263 | else if (p[1] == '[') | |
3264 | { | |
3265 | if (p[2] == ']') | |
3e43a32a MS |
3266 | error (_("mismatched quoting on brackets, " |
3267 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
3268 | else if (p[2] == '\\' && p[3] == ']') |
3269 | { | |
3270 | *end = p + 4; /* 'operator\[\]' */ | |
3271 | return p; | |
3272 | } | |
3273 | else | |
8a3fe4f8 | 3274 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 3275 | } |
9af17804 | 3276 | else |
53e8ad3d | 3277 | { |
c378eb4e | 3278 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
3279 | p++; |
3280 | continue; | |
3281 | } | |
3282 | break; | |
3283 | case '!': | |
3284 | case '=': | |
3285 | case '*': | |
3286 | case '/': | |
3287 | case '%': | |
3288 | case '^': | |
3289 | if (p[1] == '=') | |
3290 | *end = p + 2; | |
3291 | else | |
3292 | *end = p + 1; | |
3293 | return p; | |
3294 | case '<': | |
3295 | case '>': | |
3296 | case '+': | |
3297 | case '-': | |
3298 | case '&': | |
3299 | case '|': | |
3300 | if (p[0] == '-' && p[1] == '>') | |
3301 | { | |
c378eb4e | 3302 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
3303 | if (p[2] == '*') |
3304 | { | |
3305 | *end = p + 3; /* 'operator->*' */ | |
3306 | return p; | |
3307 | } | |
3308 | else if (p[2] == '\\') | |
3309 | { | |
3310 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
3311 | return p; | |
3312 | } | |
3313 | else | |
3314 | { | |
3315 | *end = p + 2; /* 'operator->' */ | |
3316 | return p; | |
3317 | } | |
3318 | } | |
3319 | if (p[1] == '=' || p[1] == p[0]) | |
3320 | *end = p + 2; | |
3321 | else | |
3322 | *end = p + 1; | |
3323 | return p; | |
3324 | case '~': | |
3325 | case ',': | |
c5aa993b | 3326 | *end = p + 1; |
53e8ad3d MS |
3327 | return p; |
3328 | case '(': | |
3329 | if (p[1] != ')') | |
3e43a32a MS |
3330 | error (_("`operator ()' must be specified " |
3331 | "without whitespace in `()'")); | |
c5aa993b | 3332 | *end = p + 2; |
53e8ad3d MS |
3333 | return p; |
3334 | case '?': | |
3335 | if (p[1] != ':') | |
3e43a32a MS |
3336 | error (_("`operator ?:' must be specified " |
3337 | "without whitespace in `?:'")); | |
53e8ad3d MS |
3338 | *end = p + 2; |
3339 | return p; | |
3340 | case '[': | |
3341 | if (p[1] != ']') | |
3e43a32a MS |
3342 | error (_("`operator []' must be specified " |
3343 | "without whitespace in `[]'")); | |
53e8ad3d MS |
3344 | *end = p + 2; |
3345 | return p; | |
3346 | default: | |
8a3fe4f8 | 3347 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
3348 | break; |
3349 | } | |
3350 | ||
c906108c SS |
3351 | *end = ""; |
3352 | return *end; | |
3353 | } | |
c906108c | 3354 | \f |
c5aa993b | 3355 | |
9fdc877b DE |
3356 | /* Cache to watch for file names already seen by filename_seen. */ |
3357 | ||
3358 | struct filename_seen_cache | |
3359 | { | |
3360 | /* Table of files seen so far. */ | |
2908cac6 DE |
3361 | htab_t tab; |
3362 | /* Initial size of the table. It automagically grows from here. */ | |
9fdc877b | 3363 | #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100 |
9fdc877b DE |
3364 | }; |
3365 | ||
3366 | /* filename_seen_cache constructor. */ | |
3367 | ||
3368 | static struct filename_seen_cache * | |
3369 | create_filename_seen_cache (void) | |
3370 | { | |
3371 | struct filename_seen_cache *cache; | |
3372 | ||
3373 | cache = XNEW (struct filename_seen_cache); | |
2908cac6 DE |
3374 | cache->tab = htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE, |
3375 | filename_hash, filename_eq, | |
3376 | NULL, xcalloc, xfree); | |
9fdc877b DE |
3377 | |
3378 | return cache; | |
3379 | } | |
3380 | ||
3381 | /* Empty the cache, but do not delete it. */ | |
3382 | ||
3383 | static void | |
2908cac6 | 3384 | clear_filename_seen_cache (struct filename_seen_cache *cache) |
9fdc877b | 3385 | { |
2908cac6 | 3386 | htab_empty (cache->tab); |
9fdc877b DE |
3387 | } |
3388 | ||
3389 | /* filename_seen_cache destructor. | |
3390 | This takes a void * argument as it is generally used as a cleanup. */ | |
3391 | ||
3392 | static void | |
3393 | delete_filename_seen_cache (void *ptr) | |
3394 | { | |
3395 | struct filename_seen_cache *cache = ptr; | |
3396 | ||
2908cac6 | 3397 | htab_delete (cache->tab); |
9fdc877b DE |
3398 | xfree (cache); |
3399 | } | |
3400 | ||
a2b6eff5 | 3401 | /* If FILE is not already in the table of files in CACHE, return zero; |
c94fdfd0 | 3402 | otherwise return non-zero. Optionally add FILE to the table if ADD |
2908cac6 DE |
3403 | is non-zero. |
3404 | ||
3405 | NOTE: We don't manage space for FILE, we assume FILE lives as long | |
3406 | as the caller needs. */ | |
eca864fe | 3407 | |
c94fdfd0 | 3408 | static int |
9fdc877b | 3409 | filename_seen (struct filename_seen_cache *cache, const char *file, int add) |
c906108c | 3410 | { |
2908cac6 | 3411 | void **slot; |
c906108c | 3412 | |
c94fdfd0 | 3413 | /* Is FILE in tab? */ |
2908cac6 DE |
3414 | slot = htab_find_slot (cache->tab, file, add ? INSERT : NO_INSERT); |
3415 | if (*slot != NULL) | |
3416 | return 1; | |
c94fdfd0 EZ |
3417 | |
3418 | /* No; maybe add it to tab. */ | |
3419 | if (add) | |
2908cac6 | 3420 | *slot = (char *) file; |
c906108c | 3421 | |
c94fdfd0 EZ |
3422 | return 0; |
3423 | } | |
3424 | ||
9fdc877b DE |
3425 | /* Data structure to maintain printing state for output_source_filename. */ |
3426 | ||
3427 | struct output_source_filename_data | |
3428 | { | |
3429 | /* Cache of what we've seen so far. */ | |
3430 | struct filename_seen_cache *filename_seen_cache; | |
3431 | ||
3432 | /* Flag of whether we're printing the first one. */ | |
3433 | int first; | |
3434 | }; | |
3435 | ||
c94fdfd0 | 3436 | /* Slave routine for sources_info. Force line breaks at ,'s. |
9fdc877b DE |
3437 | NAME is the name to print. |
3438 | DATA contains the state for printing and watching for duplicates. */ | |
eca864fe | 3439 | |
c94fdfd0 | 3440 | static void |
9fdc877b DE |
3441 | output_source_filename (const char *name, |
3442 | struct output_source_filename_data *data) | |
c94fdfd0 EZ |
3443 | { |
3444 | /* Since a single source file can result in several partial symbol | |
3445 | tables, we need to avoid printing it more than once. Note: if | |
3446 | some of the psymtabs are read in and some are not, it gets | |
3447 | printed both under "Source files for which symbols have been | |
3448 | read" and "Source files for which symbols will be read in on | |
3449 | demand". I consider this a reasonable way to deal with the | |
3450 | situation. I'm not sure whether this can also happen for | |
3451 | symtabs; it doesn't hurt to check. */ | |
3452 | ||
3453 | /* Was NAME already seen? */ | |
9fdc877b | 3454 | if (filename_seen (data->filename_seen_cache, name, 1)) |
c94fdfd0 EZ |
3455 | { |
3456 | /* Yes; don't print it again. */ | |
3457 | return; | |
3458 | } | |
9fdc877b | 3459 | |
c94fdfd0 | 3460 | /* No; print it and reset *FIRST. */ |
9fdc877b DE |
3461 | if (! data->first) |
3462 | printf_filtered (", "); | |
3463 | data->first = 0; | |
c906108c SS |
3464 | |
3465 | wrap_here (""); | |
3466 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 3467 | } |
c906108c | 3468 | |
ccefe4c4 | 3469 | /* A callback for map_partial_symbol_filenames. */ |
eca864fe | 3470 | |
ccefe4c4 | 3471 | static void |
533a737e | 3472 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
3473 | void *data) |
3474 | { | |
3475 | output_source_filename (fullname ? fullname : filename, data); | |
3476 | } | |
3477 | ||
c906108c | 3478 | static void |
fba45db2 | 3479 | sources_info (char *ignore, int from_tty) |
c906108c | 3480 | { |
43f3e411 | 3481 | struct compunit_symtab *cu; |
52f0bd74 | 3482 | struct symtab *s; |
52f0bd74 | 3483 | struct objfile *objfile; |
9fdc877b DE |
3484 | struct output_source_filename_data data; |
3485 | struct cleanup *cleanups; | |
c5aa993b | 3486 | |
c906108c SS |
3487 | if (!have_full_symbols () && !have_partial_symbols ()) |
3488 | { | |
8a3fe4f8 | 3489 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 3490 | } |
c5aa993b | 3491 | |
9fdc877b DE |
3492 | data.filename_seen_cache = create_filename_seen_cache (); |
3493 | cleanups = make_cleanup (delete_filename_seen_cache, | |
3494 | data.filename_seen_cache); | |
3495 | ||
c906108c SS |
3496 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
3497 | ||
9fdc877b | 3498 | data.first = 1; |
43f3e411 | 3499 | ALL_FILETABS (objfile, cu, s) |
c5aa993b | 3500 | { |
d092d1a2 | 3501 | const char *fullname = symtab_to_fullname (s); |
433759f7 | 3502 | |
f35a17b5 | 3503 | output_source_filename (fullname, &data); |
c5aa993b | 3504 | } |
c906108c | 3505 | printf_filtered ("\n\n"); |
c5aa993b | 3506 | |
3e43a32a MS |
3507 | printf_filtered ("Source files for which symbols " |
3508 | "will be read in on demand:\n\n"); | |
c906108c | 3509 | |
9fdc877b DE |
3510 | clear_filename_seen_cache (data.filename_seen_cache); |
3511 | data.first = 1; | |
bb4142cf DE |
3512 | map_symbol_filenames (output_partial_symbol_filename, &data, |
3513 | 1 /*need_fullname*/); | |
c906108c | 3514 | printf_filtered ("\n"); |
9fdc877b DE |
3515 | |
3516 | do_cleanups (cleanups); | |
c906108c SS |
3517 | } |
3518 | ||
fbd9ab74 JK |
3519 | /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is |
3520 | non-zero compare only lbasename of FILES. */ | |
3521 | ||
c906108c | 3522 | static int |
96142726 | 3523 | file_matches (const char *file, const char *files[], int nfiles, int basenames) |
c906108c SS |
3524 | { |
3525 | int i; | |
3526 | ||
3527 | if (file != NULL && nfiles != 0) | |
3528 | { | |
3529 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 3530 | { |
fbd9ab74 JK |
3531 | if (compare_filenames_for_search (file, (basenames |
3532 | ? lbasename (files[i]) | |
3533 | : files[i]))) | |
c5aa993b JM |
3534 | return 1; |
3535 | } | |
c906108c SS |
3536 | } |
3537 | else if (nfiles == 0) | |
3538 | return 1; | |
3539 | return 0; | |
3540 | } | |
3541 | ||
c378eb4e | 3542 | /* Free any memory associated with a search. */ |
eca864fe | 3543 | |
c906108c | 3544 | void |
fba45db2 | 3545 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
3546 | { |
3547 | struct symbol_search *p; | |
3548 | struct symbol_search *next; | |
3549 | ||
3550 | for (p = symbols; p != NULL; p = next) | |
3551 | { | |
3552 | next = p->next; | |
b8c9b27d | 3553 | xfree (p); |
c906108c SS |
3554 | } |
3555 | } | |
3556 | ||
5bd98722 | 3557 | static void |
b52109bc | 3558 | do_free_search_symbols_cleanup (void *symbolsp) |
5bd98722 | 3559 | { |
b52109bc DE |
3560 | struct symbol_search *symbols = *(struct symbol_search **) symbolsp; |
3561 | ||
5bd98722 AC |
3562 | free_search_symbols (symbols); |
3563 | } | |
3564 | ||
3565 | struct cleanup * | |
b52109bc | 3566 | make_cleanup_free_search_symbols (struct symbol_search **symbolsp) |
5bd98722 | 3567 | { |
b52109bc | 3568 | return make_cleanup (do_free_search_symbols_cleanup, symbolsp); |
5bd98722 AC |
3569 | } |
3570 | ||
b52109bc | 3571 | /* Helper function for sort_search_symbols_remove_dups and qsort. Can only |
434d2d4f | 3572 | sort symbols, not minimal symbols. */ |
eca864fe | 3573 | |
434d2d4f DJ |
3574 | static int |
3575 | compare_search_syms (const void *sa, const void *sb) | |
3576 | { | |
b52109bc DE |
3577 | struct symbol_search *sym_a = *(struct symbol_search **) sa; |
3578 | struct symbol_search *sym_b = *(struct symbol_search **) sb; | |
3579 | int c; | |
3580 | ||
d01060f0 DE |
3581 | c = FILENAME_CMP (SYMBOL_SYMTAB (sym_a->symbol)->filename, |
3582 | SYMBOL_SYMTAB (sym_b->symbol)->filename); | |
b52109bc DE |
3583 | if (c != 0) |
3584 | return c; | |
434d2d4f | 3585 | |
b52109bc DE |
3586 | if (sym_a->block != sym_b->block) |
3587 | return sym_a->block - sym_b->block; | |
3588 | ||
3589 | return strcmp (SYMBOL_PRINT_NAME (sym_a->symbol), | |
3590 | SYMBOL_PRINT_NAME (sym_b->symbol)); | |
434d2d4f DJ |
3591 | } |
3592 | ||
b52109bc DE |
3593 | /* Sort the NFOUND symbols in list FOUND and remove duplicates. |
3594 | The duplicates are freed, and the new list is returned in | |
3595 | *NEW_HEAD, *NEW_TAIL. */ | |
3596 | ||
3597 | static void | |
3598 | sort_search_symbols_remove_dups (struct symbol_search *found, int nfound, | |
3599 | struct symbol_search **new_head, | |
3600 | struct symbol_search **new_tail) | |
434d2d4f DJ |
3601 | { |
3602 | struct symbol_search **symbols, *symp, *old_next; | |
b52109bc | 3603 | int i, j, nunique; |
434d2d4f | 3604 | |
b52109bc DE |
3605 | gdb_assert (found != NULL && nfound > 0); |
3606 | ||
3607 | /* Build an array out of the list so we can easily sort them. */ | |
434d2d4f DJ |
3608 | symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *) |
3609 | * nfound); | |
b52109bc | 3610 | symp = found; |
434d2d4f DJ |
3611 | for (i = 0; i < nfound; i++) |
3612 | { | |
b52109bc DE |
3613 | gdb_assert (symp != NULL); |
3614 | gdb_assert (symp->block >= 0 && symp->block <= 1); | |
434d2d4f DJ |
3615 | symbols[i] = symp; |
3616 | symp = symp->next; | |
3617 | } | |
b52109bc | 3618 | gdb_assert (symp == NULL); |
434d2d4f DJ |
3619 | |
3620 | qsort (symbols, nfound, sizeof (struct symbol_search *), | |
3621 | compare_search_syms); | |
3622 | ||
b52109bc DE |
3623 | /* Collapse out the dups. */ |
3624 | for (i = 1, j = 1; i < nfound; ++i) | |
434d2d4f | 3625 | { |
6b9780fb | 3626 | if (compare_search_syms (&symbols[j - 1], &symbols[i]) != 0) |
b52109bc DE |
3627 | symbols[j++] = symbols[i]; |
3628 | else | |
3629 | xfree (symbols[i]); | |
434d2d4f | 3630 | } |
b52109bc DE |
3631 | nunique = j; |
3632 | symbols[j - 1]->next = NULL; | |
3633 | ||
3634 | /* Rebuild the linked list. */ | |
3635 | for (i = 0; i < nunique - 1; i++) | |
3636 | symbols[i]->next = symbols[i + 1]; | |
3637 | symbols[nunique - 1]->next = NULL; | |
434d2d4f | 3638 | |
b52109bc DE |
3639 | *new_head = symbols[0]; |
3640 | *new_tail = symbols[nunique - 1]; | |
8ed32cc0 | 3641 | xfree (symbols); |
434d2d4f | 3642 | } |
5bd98722 | 3643 | |
ccefe4c4 TT |
3644 | /* An object of this type is passed as the user_data to the |
3645 | expand_symtabs_matching method. */ | |
3646 | struct search_symbols_data | |
3647 | { | |
3648 | int nfiles; | |
96142726 | 3649 | const char **files; |
681bf369 JK |
3650 | |
3651 | /* It is true if PREG contains valid data, false otherwise. */ | |
3652 | unsigned preg_p : 1; | |
3653 | regex_t preg; | |
ccefe4c4 TT |
3654 | }; |
3655 | ||
3656 | /* A callback for expand_symtabs_matching. */ | |
eca864fe | 3657 | |
ccefe4c4 | 3658 | static int |
fbd9ab74 JK |
3659 | search_symbols_file_matches (const char *filename, void *user_data, |
3660 | int basenames) | |
ccefe4c4 TT |
3661 | { |
3662 | struct search_symbols_data *data = user_data; | |
433759f7 | 3663 | |
fbd9ab74 | 3664 | return file_matches (filename, data->files, data->nfiles, basenames); |
ccefe4c4 TT |
3665 | } |
3666 | ||
3667 | /* A callback for expand_symtabs_matching. */ | |
eca864fe | 3668 | |
ccefe4c4 | 3669 | static int |
e078317b | 3670 | search_symbols_name_matches (const char *symname, void *user_data) |
ccefe4c4 TT |
3671 | { |
3672 | struct search_symbols_data *data = user_data; | |
433759f7 | 3673 | |
681bf369 | 3674 | return !data->preg_p || regexec (&data->preg, symname, 0, NULL, 0) == 0; |
ccefe4c4 TT |
3675 | } |
3676 | ||
c906108c SS |
3677 | /* Search the symbol table for matches to the regular expression REGEXP, |
3678 | returning the results in *MATCHES. | |
3679 | ||
3680 | Only symbols of KIND are searched: | |
e8930875 JK |
3681 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
3682 | and constants (enums) | |
176620f1 EZ |
3683 | FUNCTIONS_DOMAIN - search all functions |
3684 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 3685 | ALL_DOMAIN - an internal error for this function |
c906108c SS |
3686 | |
3687 | free_search_symbols should be called when *MATCHES is no longer needed. | |
434d2d4f | 3688 | |
b52109bc DE |
3689 | Within each file the results are sorted locally; each symtab's global and |
3690 | static blocks are separately alphabetized. | |
3691 | Duplicate entries are removed. */ | |
c378eb4e | 3692 | |
c906108c | 3693 | void |
96142726 TT |
3694 | search_symbols (const char *regexp, enum search_domain kind, |
3695 | int nfiles, const char *files[], | |
fd118b61 | 3696 | struct symbol_search **matches) |
c906108c | 3697 | { |
43f3e411 | 3698 | struct compunit_symtab *cust; |
346d1dfe | 3699 | const struct blockvector *bv; |
52f0bd74 AC |
3700 | struct block *b; |
3701 | int i = 0; | |
8157b174 | 3702 | struct block_iterator iter; |
52f0bd74 | 3703 | struct symbol *sym; |
c906108c SS |
3704 | struct objfile *objfile; |
3705 | struct minimal_symbol *msymbol; | |
c906108c | 3706 | int found_misc = 0; |
bc043ef3 | 3707 | static const enum minimal_symbol_type types[] |
e8930875 | 3708 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 3709 | static const enum minimal_symbol_type types2[] |
e8930875 | 3710 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 3711 | static const enum minimal_symbol_type types3[] |
e8930875 | 3712 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 3713 | static const enum minimal_symbol_type types4[] |
e8930875 | 3714 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
3715 | enum minimal_symbol_type ourtype; |
3716 | enum minimal_symbol_type ourtype2; | |
3717 | enum minimal_symbol_type ourtype3; | |
3718 | enum minimal_symbol_type ourtype4; | |
b52109bc | 3719 | struct symbol_search *found; |
c906108c | 3720 | struct symbol_search *tail; |
ccefe4c4 | 3721 | struct search_symbols_data datum; |
b52109bc | 3722 | int nfound; |
c906108c | 3723 | |
681bf369 JK |
3724 | /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current |
3725 | CLEANUP_CHAIN is freed only in the case of an error. */ | |
3726 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
3727 | struct cleanup *retval_chain; | |
3728 | ||
e8930875 JK |
3729 | gdb_assert (kind <= TYPES_DOMAIN); |
3730 | ||
8903c50d TT |
3731 | ourtype = types[kind]; |
3732 | ourtype2 = types2[kind]; | |
3733 | ourtype3 = types3[kind]; | |
3734 | ourtype4 = types4[kind]; | |
c906108c | 3735 | |
b52109bc | 3736 | *matches = NULL; |
681bf369 | 3737 | datum.preg_p = 0; |
c906108c SS |
3738 | |
3739 | if (regexp != NULL) | |
3740 | { | |
3741 | /* Make sure spacing is right for C++ operators. | |
3742 | This is just a courtesy to make the matching less sensitive | |
3743 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 3744 | and <TYPENAME> or <OPERATOR>. */ |
96142726 TT |
3745 | const char *opend; |
3746 | const char *opname = operator_chars (regexp, &opend); | |
681bf369 | 3747 | int errcode; |
433759f7 | 3748 | |
c906108c | 3749 | if (*opname) |
c5aa993b | 3750 | { |
3e43a32a MS |
3751 | int fix = -1; /* -1 means ok; otherwise number of |
3752 | spaces needed. */ | |
433759f7 | 3753 | |
c5aa993b JM |
3754 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
3755 | { | |
c378eb4e | 3756 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
3757 | if (opname[-1] != ' ' || opname[-2] == ' ') |
3758 | fix = 1; | |
3759 | } | |
3760 | else | |
3761 | { | |
c378eb4e | 3762 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
3763 | if (opname[-1] == ' ') |
3764 | fix = 0; | |
3765 | } | |
c378eb4e | 3766 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
3767 | if (fix >= 0) |
3768 | { | |
045f55a6 | 3769 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 3770 | |
c5aa993b JM |
3771 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
3772 | regexp = tmp; | |
3773 | } | |
3774 | } | |
3775 | ||
559a7a62 JK |
3776 | errcode = regcomp (&datum.preg, regexp, |
3777 | REG_NOSUB | (case_sensitivity == case_sensitive_off | |
3778 | ? REG_ICASE : 0)); | |
681bf369 JK |
3779 | if (errcode != 0) |
3780 | { | |
3781 | char *err = get_regcomp_error (errcode, &datum.preg); | |
3782 | ||
3783 | make_cleanup (xfree, err); | |
3784 | error (_("Invalid regexp (%s): %s"), err, regexp); | |
3785 | } | |
3786 | datum.preg_p = 1; | |
3787 | make_regfree_cleanup (&datum.preg); | |
c906108c SS |
3788 | } |
3789 | ||
3790 | /* Search through the partial symtabs *first* for all symbols | |
3791 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 3792 | the machinery below. */ |
c906108c | 3793 | |
ccefe4c4 TT |
3794 | datum.nfiles = nfiles; |
3795 | datum.files = files; | |
bb4142cf DE |
3796 | expand_symtabs_matching ((nfiles == 0 |
3797 | ? NULL | |
3798 | : search_symbols_file_matches), | |
3799 | search_symbols_name_matches, | |
3800 | kind, &datum); | |
c906108c SS |
3801 | |
3802 | /* Here, we search through the minimal symbol tables for functions | |
3803 | and variables that match, and force their symbols to be read. | |
3804 | This is in particular necessary for demangled variable names, | |
3805 | which are no longer put into the partial symbol tables. | |
3806 | The symbol will then be found during the scan of symtabs below. | |
3807 | ||
3808 | For functions, find_pc_symtab should succeed if we have debug info | |
422d65e7 DE |
3809 | for the function, for variables we have to call |
3810 | lookup_symbol_in_objfile_from_linkage_name to determine if the variable | |
3811 | has debug info. | |
c906108c | 3812 | If the lookup fails, set found_misc so that we will rescan to print |
422d65e7 DE |
3813 | any matching symbols without debug info. |
3814 | We only search the objfile the msymbol came from, we no longer search | |
3815 | all objfiles. In large programs (1000s of shared libs) searching all | |
3816 | objfiles is not worth the pain. */ | |
c906108c | 3817 | |
176620f1 | 3818 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
3819 | { |
3820 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 3821 | { |
89295b4d PP |
3822 | QUIT; |
3823 | ||
422d65e7 DE |
3824 | if (msymbol->created_by_gdb) |
3825 | continue; | |
3826 | ||
d50bd42b DE |
3827 | if (MSYMBOL_TYPE (msymbol) == ourtype |
3828 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
3829 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
3830 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 3831 | { |
681bf369 | 3832 | if (!datum.preg_p |
efd66ac6 | 3833 | || regexec (&datum.preg, MSYMBOL_NATURAL_NAME (msymbol), 0, |
681bf369 | 3834 | NULL, 0) == 0) |
c5aa993b | 3835 | { |
422d65e7 DE |
3836 | /* Note: An important side-effect of these lookup functions |
3837 | is to expand the symbol table if msymbol is found, for the | |
43f3e411 | 3838 | benefit of the next loop on ALL_COMPUNITS. */ |
422d65e7 | 3839 | if (kind == FUNCTIONS_DOMAIN |
43f3e411 DE |
3840 | ? (find_pc_compunit_symtab |
3841 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL) | |
422d65e7 | 3842 | : (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 3843 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
422d65e7 DE |
3844 | == NULL)) |
3845 | found_misc = 1; | |
c5aa993b JM |
3846 | } |
3847 | } | |
3848 | } | |
c906108c SS |
3849 | } |
3850 | ||
b52109bc DE |
3851 | found = NULL; |
3852 | tail = NULL; | |
3853 | nfound = 0; | |
3854 | retval_chain = make_cleanup_free_search_symbols (&found); | |
3855 | ||
43f3e411 | 3856 | ALL_COMPUNITS (objfile, cust) |
c5aa993b | 3857 | { |
43f3e411 | 3858 | bv = COMPUNIT_BLOCKVECTOR (cust); |
d50bd42b DE |
3859 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
3860 | { | |
d50bd42b DE |
3861 | b = BLOCKVECTOR_BLOCK (bv, i); |
3862 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
3863 | { | |
3864 | struct symtab *real_symtab = SYMBOL_SYMTAB (sym); | |
3865 | ||
3866 | QUIT; | |
3867 | ||
fbd9ab74 JK |
3868 | /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be |
3869 | a substring of symtab_to_fullname as it may contain "./" etc. */ | |
3870 | if ((file_matches (real_symtab->filename, files, nfiles, 0) | |
3871 | || ((basenames_may_differ | |
3872 | || file_matches (lbasename (real_symtab->filename), | |
3873 | files, nfiles, 1)) | |
3874 | && file_matches (symtab_to_fullname (real_symtab), | |
3875 | files, nfiles, 0))) | |
d50bd42b DE |
3876 | && ((!datum.preg_p |
3877 | || regexec (&datum.preg, SYMBOL_NATURAL_NAME (sym), 0, | |
3878 | NULL, 0) == 0) | |
3879 | && ((kind == VARIABLES_DOMAIN | |
3880 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
3881 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED | |
3882 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
3883 | /* LOC_CONST can be used for more than just enums, | |
3884 | e.g., c++ static const members. | |
3885 | We only want to skip enums here. */ | |
3886 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
01465b56 DE |
3887 | && (TYPE_CODE (SYMBOL_TYPE (sym)) |
3888 | == TYPE_CODE_ENUM))) | |
d50bd42b DE |
3889 | || (kind == FUNCTIONS_DOMAIN |
3890 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
3891 | || (kind == TYPES_DOMAIN | |
3892 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
3893 | { | |
3894 | /* match */ | |
b52109bc | 3895 | struct symbol_search *psr = (struct symbol_search *) |
d50bd42b DE |
3896 | xmalloc (sizeof (struct symbol_search)); |
3897 | psr->block = i; | |
d50bd42b | 3898 | psr->symbol = sym; |
7c7b6655 | 3899 | memset (&psr->msymbol, 0, sizeof (psr->msymbol)); |
d50bd42b DE |
3900 | psr->next = NULL; |
3901 | if (tail == NULL) | |
b52109bc | 3902 | found = psr; |
d50bd42b DE |
3903 | else |
3904 | tail->next = psr; | |
3905 | tail = psr; | |
3906 | nfound ++; | |
3907 | } | |
3908 | } | |
d50bd42b | 3909 | } |
c5aa993b | 3910 | } |
c906108c | 3911 | |
b52109bc DE |
3912 | if (found != NULL) |
3913 | { | |
3914 | sort_search_symbols_remove_dups (found, nfound, &found, &tail); | |
3915 | /* Note: nfound is no longer useful beyond this point. */ | |
3916 | } | |
3917 | ||
c906108c | 3918 | /* If there are no eyes, avoid all contact. I mean, if there are |
01465b56 | 3919 | no debug symbols, then add matching minsyms. */ |
c906108c | 3920 | |
422d65e7 | 3921 | if (found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN)) |
c906108c SS |
3922 | { |
3923 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 3924 | { |
89295b4d PP |
3925 | QUIT; |
3926 | ||
422d65e7 DE |
3927 | if (msymbol->created_by_gdb) |
3928 | continue; | |
3929 | ||
d50bd42b DE |
3930 | if (MSYMBOL_TYPE (msymbol) == ourtype |
3931 | || MSYMBOL_TYPE (msymbol) == ourtype2 | |
3932 | || MSYMBOL_TYPE (msymbol) == ourtype3 | |
3933 | || MSYMBOL_TYPE (msymbol) == ourtype4) | |
c5aa993b | 3934 | { |
681bf369 | 3935 | if (!datum.preg_p |
efd66ac6 | 3936 | || regexec (&datum.preg, MSYMBOL_NATURAL_NAME (msymbol), 0, |
681bf369 | 3937 | NULL, 0) == 0) |
c5aa993b | 3938 | { |
422d65e7 DE |
3939 | /* For functions we can do a quick check of whether the |
3940 | symbol might be found via find_pc_symtab. */ | |
3941 | if (kind != FUNCTIONS_DOMAIN | |
43f3e411 DE |
3942 | || (find_pc_compunit_symtab |
3943 | (MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL)) | |
c5aa993b | 3944 | { |
422d65e7 | 3945 | if (lookup_symbol_in_objfile_from_linkage_name |
efd66ac6 | 3946 | (objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN) |
422d65e7 | 3947 | == NULL) |
c5aa993b JM |
3948 | { |
3949 | /* match */ | |
b52109bc | 3950 | struct symbol_search *psr = (struct symbol_search *) |
3e43a32a | 3951 | xmalloc (sizeof (struct symbol_search)); |
c5aa993b | 3952 | psr->block = i; |
7c7b6655 TT |
3953 | psr->msymbol.minsym = msymbol; |
3954 | psr->msymbol.objfile = objfile; | |
c5aa993b JM |
3955 | psr->symbol = NULL; |
3956 | psr->next = NULL; | |
3957 | if (tail == NULL) | |
b52109bc | 3958 | found = psr; |
c5aa993b JM |
3959 | else |
3960 | tail->next = psr; | |
3961 | tail = psr; | |
3962 | } | |
3963 | } | |
3964 | } | |
3965 | } | |
3966 | } | |
c906108c SS |
3967 | } |
3968 | ||
681bf369 JK |
3969 | discard_cleanups (retval_chain); |
3970 | do_cleanups (old_chain); | |
b52109bc | 3971 | *matches = found; |
c906108c SS |
3972 | } |
3973 | ||
3974 | /* Helper function for symtab_symbol_info, this function uses | |
3975 | the data returned from search_symbols() to print information | |
c378eb4e MS |
3976 | regarding the match to gdb_stdout. */ |
3977 | ||
c906108c | 3978 | static void |
8903c50d | 3979 | print_symbol_info (enum search_domain kind, |
d01060f0 | 3980 | struct symbol *sym, |
05cba821 | 3981 | int block, const char *last) |
c906108c | 3982 | { |
d01060f0 | 3983 | struct symtab *s = SYMBOL_SYMTAB (sym); |
05cba821 JK |
3984 | const char *s_filename = symtab_to_filename_for_display (s); |
3985 | ||
3986 | if (last == NULL || filename_cmp (last, s_filename) != 0) | |
c906108c SS |
3987 | { |
3988 | fputs_filtered ("\nFile ", gdb_stdout); | |
05cba821 | 3989 | fputs_filtered (s_filename, gdb_stdout); |
c906108c SS |
3990 | fputs_filtered (":\n", gdb_stdout); |
3991 | } | |
3992 | ||
176620f1 | 3993 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 3994 | printf_filtered ("static "); |
c5aa993b | 3995 | |
c378eb4e | 3996 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
3997 | if (kind == TYPES_DOMAIN |
3998 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 3999 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 4000 | /* variable, func, or typedef-that-is-c++-class. */ |
d50bd42b DE |
4001 | else if (kind < TYPES_DOMAIN |
4002 | || (kind == TYPES_DOMAIN | |
4003 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
4004 | { |
4005 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 4006 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 4007 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 4008 | gdb_stdout, 0); |
c906108c SS |
4009 | |
4010 | printf_filtered (";\n"); | |
4011 | } | |
c906108c SS |
4012 | } |
4013 | ||
4014 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
4015 | for non-debugging symbols to gdb_stdout. */ |
4016 | ||
c906108c | 4017 | static void |
7c7b6655 | 4018 | print_msymbol_info (struct bound_minimal_symbol msymbol) |
c906108c | 4019 | { |
7c7b6655 | 4020 | struct gdbarch *gdbarch = get_objfile_arch (msymbol.objfile); |
3ac4495a MS |
4021 | char *tmp; |
4022 | ||
d80b854b | 4023 | if (gdbarch_addr_bit (gdbarch) <= 32) |
77e371c0 | 4024 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol) |
bb599908 PH |
4025 | & (CORE_ADDR) 0xffffffff, |
4026 | 8); | |
3ac4495a | 4027 | else |
77e371c0 | 4028 | tmp = hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol), |
bb599908 | 4029 | 16); |
3ac4495a | 4030 | printf_filtered ("%s %s\n", |
efd66ac6 | 4031 | tmp, MSYMBOL_PRINT_NAME (msymbol.minsym)); |
c906108c SS |
4032 | } |
4033 | ||
4034 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 4035 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 4036 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
4037 | matches. */ |
4038 | ||
c906108c | 4039 | static void |
8903c50d | 4040 | symtab_symbol_info (char *regexp, enum search_domain kind, int from_tty) |
c906108c | 4041 | { |
bc043ef3 | 4042 | static const char * const classnames[] = |
e8930875 | 4043 | {"variable", "function", "type"}; |
c906108c SS |
4044 | struct symbol_search *symbols; |
4045 | struct symbol_search *p; | |
4046 | struct cleanup *old_chain; | |
05cba821 | 4047 | const char *last_filename = NULL; |
c906108c SS |
4048 | int first = 1; |
4049 | ||
e8930875 JK |
4050 | gdb_assert (kind <= TYPES_DOMAIN); |
4051 | ||
c378eb4e | 4052 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
96142726 | 4053 | search_symbols (regexp, kind, 0, NULL, &symbols); |
b52109bc | 4054 | old_chain = make_cleanup_free_search_symbols (&symbols); |
c906108c | 4055 | |
ca242aad YQ |
4056 | if (regexp != NULL) |
4057 | printf_filtered (_("All %ss matching regular expression \"%s\":\n"), | |
4058 | classnames[kind], regexp); | |
4059 | else | |
4060 | printf_filtered (_("All defined %ss:\n"), classnames[kind]); | |
c906108c SS |
4061 | |
4062 | for (p = symbols; p != NULL; p = p->next) | |
4063 | { | |
4064 | QUIT; | |
4065 | ||
7c7b6655 | 4066 | if (p->msymbol.minsym != NULL) |
c5aa993b JM |
4067 | { |
4068 | if (first) | |
4069 | { | |
ca242aad | 4070 | printf_filtered (_("\nNon-debugging symbols:\n")); |
c5aa993b JM |
4071 | first = 0; |
4072 | } | |
4073 | print_msymbol_info (p->msymbol); | |
4074 | } | |
c906108c | 4075 | else |
c5aa993b JM |
4076 | { |
4077 | print_symbol_info (kind, | |
c5aa993b JM |
4078 | p->symbol, |
4079 | p->block, | |
4080 | last_filename); | |
d01060f0 DE |
4081 | last_filename |
4082 | = symtab_to_filename_for_display (SYMBOL_SYMTAB (p->symbol)); | |
c5aa993b | 4083 | } |
c906108c SS |
4084 | } |
4085 | ||
4086 | do_cleanups (old_chain); | |
4087 | } | |
4088 | ||
4089 | static void | |
fba45db2 | 4090 | variables_info (char *regexp, int from_tty) |
c906108c | 4091 | { |
176620f1 | 4092 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
4093 | } |
4094 | ||
4095 | static void | |
fba45db2 | 4096 | functions_info (char *regexp, int from_tty) |
c906108c | 4097 | { |
176620f1 | 4098 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
4099 | } |
4100 | ||
357e46e7 | 4101 | |
c906108c | 4102 | static void |
fba45db2 | 4103 | types_info (char *regexp, int from_tty) |
c906108c | 4104 | { |
176620f1 | 4105 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
4106 | } |
4107 | ||
c378eb4e | 4108 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 4109 | |
8b93c638 | 4110 | void |
fba45db2 | 4111 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
4112 | { |
4113 | rbreak_command (regexp, from_tty); | |
4114 | } | |
8926118c | 4115 | |
95a42b64 TT |
4116 | /* A cleanup function that calls end_rbreak_breakpoints. */ |
4117 | ||
4118 | static void | |
4119 | do_end_rbreak_breakpoints (void *ignore) | |
4120 | { | |
4121 | end_rbreak_breakpoints (); | |
4122 | } | |
4123 | ||
c906108c | 4124 | static void |
fba45db2 | 4125 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
4126 | { |
4127 | struct symbol_search *ss; | |
4128 | struct symbol_search *p; | |
4129 | struct cleanup *old_chain; | |
95a42b64 TT |
4130 | char *string = NULL; |
4131 | int len = 0; | |
96142726 TT |
4132 | const char **files = NULL; |
4133 | const char *file_name; | |
8bd10a10 | 4134 | int nfiles = 0; |
c906108c | 4135 | |
8bd10a10 CM |
4136 | if (regexp) |
4137 | { | |
4138 | char *colon = strchr (regexp, ':'); | |
433759f7 | 4139 | |
8bd10a10 CM |
4140 | if (colon && *(colon + 1) != ':') |
4141 | { | |
4142 | int colon_index; | |
96142726 | 4143 | char *local_name; |
8bd10a10 CM |
4144 | |
4145 | colon_index = colon - regexp; | |
96142726 TT |
4146 | local_name = alloca (colon_index + 1); |
4147 | memcpy (local_name, regexp, colon_index); | |
4148 | local_name[colon_index--] = 0; | |
4149 | while (isspace (local_name[colon_index])) | |
4150 | local_name[colon_index--] = 0; | |
4151 | file_name = local_name; | |
8bd10a10 CM |
4152 | files = &file_name; |
4153 | nfiles = 1; | |
529480d0 | 4154 | regexp = skip_spaces (colon + 1); |
8bd10a10 CM |
4155 | } |
4156 | } | |
4157 | ||
4158 | search_symbols (regexp, FUNCTIONS_DOMAIN, nfiles, files, &ss); | |
b52109bc | 4159 | old_chain = make_cleanup_free_search_symbols (&ss); |
95a42b64 | 4160 | make_cleanup (free_current_contents, &string); |
c906108c | 4161 | |
95a42b64 TT |
4162 | start_rbreak_breakpoints (); |
4163 | make_cleanup (do_end_rbreak_breakpoints, NULL); | |
c906108c SS |
4164 | for (p = ss; p != NULL; p = p->next) |
4165 | { | |
7c7b6655 | 4166 | if (p->msymbol.minsym == NULL) |
c5aa993b | 4167 | { |
d01060f0 DE |
4168 | struct symtab *symtab = SYMBOL_SYMTAB (p->symbol); |
4169 | const char *fullname = symtab_to_fullname (symtab); | |
05cba821 JK |
4170 | |
4171 | int newlen = (strlen (fullname) | |
95a42b64 TT |
4172 | + strlen (SYMBOL_LINKAGE_NAME (p->symbol)) |
4173 | + 4); | |
433759f7 | 4174 | |
95a42b64 TT |
4175 | if (newlen > len) |
4176 | { | |
4177 | string = xrealloc (string, newlen); | |
4178 | len = newlen; | |
4179 | } | |
05cba821 | 4180 | strcpy (string, fullname); |
c5aa993b | 4181 | strcat (string, ":'"); |
2335f48e | 4182 | strcat (string, SYMBOL_LINKAGE_NAME (p->symbol)); |
c5aa993b JM |
4183 | strcat (string, "'"); |
4184 | break_command (string, from_tty); | |
176620f1 | 4185 | print_symbol_info (FUNCTIONS_DOMAIN, |
c5aa993b JM |
4186 | p->symbol, |
4187 | p->block, | |
d01060f0 | 4188 | symtab_to_filename_for_display (symtab)); |
c5aa993b | 4189 | } |
c906108c | 4190 | else |
c5aa993b | 4191 | { |
efd66ac6 | 4192 | int newlen = (strlen (MSYMBOL_LINKAGE_NAME (p->msymbol.minsym)) + 3); |
433759f7 | 4193 | |
95a42b64 TT |
4194 | if (newlen > len) |
4195 | { | |
4196 | string = xrealloc (string, newlen); | |
4197 | len = newlen; | |
4198 | } | |
6214f497 | 4199 | strcpy (string, "'"); |
efd66ac6 | 4200 | strcat (string, MSYMBOL_LINKAGE_NAME (p->msymbol.minsym)); |
6214f497 DJ |
4201 | strcat (string, "'"); |
4202 | ||
4203 | break_command (string, from_tty); | |
c5aa993b | 4204 | printf_filtered ("<function, no debug info> %s;\n", |
efd66ac6 | 4205 | MSYMBOL_PRINT_NAME (p->msymbol.minsym)); |
c5aa993b | 4206 | } |
c906108c SS |
4207 | } |
4208 | ||
4209 | do_cleanups (old_chain); | |
4210 | } | |
c906108c | 4211 | \f |
c5aa993b | 4212 | |
1976171a JK |
4213 | /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN. |
4214 | ||
4215 | Either sym_text[sym_text_len] != '(' and then we search for any | |
4216 | symbol starting with SYM_TEXT text. | |
4217 | ||
4218 | Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to | |
4219 | be terminated at that point. Partial symbol tables do not have parameters | |
4220 | information. */ | |
4221 | ||
4222 | static int | |
4223 | compare_symbol_name (const char *name, const char *sym_text, int sym_text_len) | |
4224 | { | |
4225 | int (*ncmp) (const char *, const char *, size_t); | |
4226 | ||
4227 | ncmp = (case_sensitivity == case_sensitive_on ? strncmp : strncasecmp); | |
4228 | ||
4229 | if (ncmp (name, sym_text, sym_text_len) != 0) | |
4230 | return 0; | |
4231 | ||
4232 | if (sym_text[sym_text_len] == '(') | |
4233 | { | |
4234 | /* User searches for `name(someth...'. Require NAME to be terminated. | |
4235 | Normally psymtabs and gdbindex have no parameter types so '\0' will be | |
4236 | present but accept even parameters presence. In this case this | |
4237 | function is in fact strcmp_iw but whitespace skipping is not supported | |
4238 | for tab completion. */ | |
4239 | ||
4240 | if (name[sym_text_len] != '\0' && name[sym_text_len] != '(') | |
4241 | return 0; | |
4242 | } | |
4243 | ||
4244 | return 1; | |
4245 | } | |
4246 | ||
821296b7 SA |
4247 | /* Free any memory associated with a completion list. */ |
4248 | ||
4249 | static void | |
49c4e619 | 4250 | free_completion_list (VEC (char_ptr) **list_ptr) |
821296b7 | 4251 | { |
49c4e619 TT |
4252 | int i; |
4253 | char *p; | |
821296b7 | 4254 | |
49c4e619 TT |
4255 | for (i = 0; VEC_iterate (char_ptr, *list_ptr, i, p); ++i) |
4256 | xfree (p); | |
4257 | VEC_free (char_ptr, *list_ptr); | |
821296b7 SA |
4258 | } |
4259 | ||
4260 | /* Callback for make_cleanup. */ | |
4261 | ||
4262 | static void | |
4263 | do_free_completion_list (void *list) | |
4264 | { | |
4265 | free_completion_list (list); | |
4266 | } | |
4267 | ||
c906108c SS |
4268 | /* Helper routine for make_symbol_completion_list. */ |
4269 | ||
49c4e619 | 4270 | static VEC (char_ptr) *return_val; |
c906108c SS |
4271 | |
4272 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
c906108c | 4273 | completion_list_add_name \ |
2335f48e | 4274 | (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) |
c906108c | 4275 | |
efd66ac6 TT |
4276 | #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ |
4277 | completion_list_add_name \ | |
4278 | (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) | |
4279 | ||
c906108c | 4280 | /* Test to see if the symbol specified by SYMNAME (which is already |
c5aa993b | 4281 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
c378eb4e | 4282 | characters. If so, add it to the current completion list. */ |
c906108c SS |
4283 | |
4284 | static void | |
0d5cff50 DE |
4285 | completion_list_add_name (const char *symname, |
4286 | const char *sym_text, int sym_text_len, | |
4287 | const char *text, const char *word) | |
c906108c | 4288 | { |
c378eb4e | 4289 | /* Clip symbols that cannot match. */ |
1976171a JK |
4290 | if (!compare_symbol_name (symname, sym_text, sym_text_len)) |
4291 | return; | |
c906108c | 4292 | |
c906108c | 4293 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 4294 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
4295 | |
4296 | { | |
4297 | char *new; | |
433759f7 | 4298 | |
c906108c SS |
4299 | if (word == sym_text) |
4300 | { | |
4301 | new = xmalloc (strlen (symname) + 5); | |
4302 | strcpy (new, symname); | |
4303 | } | |
4304 | else if (word > sym_text) | |
4305 | { | |
4306 | /* Return some portion of symname. */ | |
4307 | new = xmalloc (strlen (symname) + 5); | |
4308 | strcpy (new, symname + (word - sym_text)); | |
4309 | } | |
4310 | else | |
4311 | { | |
4312 | /* Return some of SYM_TEXT plus symname. */ | |
4313 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); | |
4314 | strncpy (new, word, sym_text - word); | |
4315 | new[sym_text - word] = '\0'; | |
4316 | strcat (new, symname); | |
4317 | } | |
4318 | ||
49c4e619 | 4319 | VEC_safe_push (char_ptr, return_val, new); |
c906108c SS |
4320 | } |
4321 | } | |
4322 | ||
69636828 AF |
4323 | /* ObjC: In case we are completing on a selector, look as the msymbol |
4324 | again and feed all the selectors into the mill. */ | |
4325 | ||
4326 | static void | |
0d5cff50 DE |
4327 | completion_list_objc_symbol (struct minimal_symbol *msymbol, |
4328 | const char *sym_text, int sym_text_len, | |
4329 | const char *text, const char *word) | |
69636828 AF |
4330 | { |
4331 | static char *tmp = NULL; | |
4332 | static unsigned int tmplen = 0; | |
9af17804 | 4333 | |
0d5cff50 | 4334 | const char *method, *category, *selector; |
69636828 | 4335 | char *tmp2 = NULL; |
9af17804 | 4336 | |
efd66ac6 | 4337 | method = MSYMBOL_NATURAL_NAME (msymbol); |
69636828 AF |
4338 | |
4339 | /* Is it a method? */ | |
4340 | if ((method[0] != '-') && (method[0] != '+')) | |
4341 | return; | |
4342 | ||
4343 | if (sym_text[0] == '[') | |
4344 | /* Complete on shortened method method. */ | |
4345 | completion_list_add_name (method + 1, sym_text, sym_text_len, text, word); | |
9af17804 | 4346 | |
69636828 AF |
4347 | while ((strlen (method) + 1) >= tmplen) |
4348 | { | |
4349 | if (tmplen == 0) | |
4350 | tmplen = 1024; | |
4351 | else | |
4352 | tmplen *= 2; | |
4353 | tmp = xrealloc (tmp, tmplen); | |
4354 | } | |
4355 | selector = strchr (method, ' '); | |
4356 | if (selector != NULL) | |
4357 | selector++; | |
9af17804 | 4358 | |
69636828 | 4359 | category = strchr (method, '('); |
9af17804 | 4360 | |
69636828 AF |
4361 | if ((category != NULL) && (selector != NULL)) |
4362 | { | |
4363 | memcpy (tmp, method, (category - method)); | |
4364 | tmp[category - method] = ' '; | |
4365 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
4366 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
4367 | if (sym_text[0] == '[') | |
4368 | completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word); | |
4369 | } | |
9af17804 | 4370 | |
69636828 AF |
4371 | if (selector != NULL) |
4372 | { | |
4373 | /* Complete on selector only. */ | |
4374 | strcpy (tmp, selector); | |
4375 | tmp2 = strchr (tmp, ']'); | |
4376 | if (tmp2 != NULL) | |
4377 | *tmp2 = '\0'; | |
9af17804 | 4378 | |
69636828 AF |
4379 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); |
4380 | } | |
4381 | } | |
4382 | ||
4383 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 4384 | symbols. FIXME: This should probably be language-specific. */ |
69636828 | 4385 | |
6f937416 PA |
4386 | static const char * |
4387 | language_search_unquoted_string (const char *text, const char *p) | |
69636828 AF |
4388 | { |
4389 | for (; p > text; --p) | |
4390 | { | |
4391 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
4392 | continue; | |
4393 | else | |
4394 | { | |
4395 | if ((current_language->la_language == language_objc)) | |
4396 | { | |
c378eb4e | 4397 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
4398 | continue; |
4399 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 4400 | p -= 2; /* Beginning of a method name. */ |
69636828 | 4401 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 4402 | { /* Might be part of a method name. */ |
6f937416 | 4403 | const char *t = p; |
69636828 AF |
4404 | |
4405 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
4406 | that we are in the middle of a method name. However, | |
4407 | finding "-[" or "+[" should be pretty un-ambiguous. | |
4408 | Unfortunately we have to find it now to decide. */ | |
4409 | ||
4410 | while (t > text) | |
4411 | if (isalnum (t[-1]) || t[-1] == '_' || | |
4412 | t[-1] == ' ' || t[-1] == ':' || | |
4413 | t[-1] == '(' || t[-1] == ')') | |
4414 | --t; | |
4415 | else | |
4416 | break; | |
4417 | ||
4418 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
4419 | p = t - 2; /* Method name detected. */ |
4420 | /* Else we leave with p unchanged. */ | |
69636828 AF |
4421 | } |
4422 | } | |
4423 | break; | |
4424 | } | |
4425 | } | |
4426 | return p; | |
4427 | } | |
4428 | ||
edb3359d | 4429 | static void |
6f937416 PA |
4430 | completion_list_add_fields (struct symbol *sym, const char *sym_text, |
4431 | int sym_text_len, const char *text, | |
4432 | const char *word) | |
edb3359d DJ |
4433 | { |
4434 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4435 | { | |
4436 | struct type *t = SYMBOL_TYPE (sym); | |
4437 | enum type_code c = TYPE_CODE (t); | |
4438 | int j; | |
4439 | ||
4440 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
4441 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
4442 | if (TYPE_FIELD_NAME (t, j)) | |
4443 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
4444 | sym_text, sym_text_len, text, word); | |
4445 | } | |
4446 | } | |
4447 | ||
ccefe4c4 | 4448 | /* Type of the user_data argument passed to add_macro_name or |
bb4142cf | 4449 | symbol_completion_matcher. The contents are simply whatever is |
ccefe4c4 TT |
4450 | needed by completion_list_add_name. */ |
4451 | struct add_name_data | |
9a044a89 | 4452 | { |
6f937416 | 4453 | const char *sym_text; |
9a044a89 | 4454 | int sym_text_len; |
6f937416 PA |
4455 | const char *text; |
4456 | const char *word; | |
9a044a89 TT |
4457 | }; |
4458 | ||
4459 | /* A callback used with macro_for_each and macro_for_each_in_scope. | |
4460 | This adds a macro's name to the current completion list. */ | |
eca864fe | 4461 | |
9a044a89 TT |
4462 | static void |
4463 | add_macro_name (const char *name, const struct macro_definition *ignore, | |
9b158ba0 | 4464 | struct macro_source_file *ignore2, int ignore3, |
9a044a89 TT |
4465 | void *user_data) |
4466 | { | |
ccefe4c4 | 4467 | struct add_name_data *datum = (struct add_name_data *) user_data; |
433759f7 | 4468 | |
ac1a991b | 4469 | completion_list_add_name (name, |
ccefe4c4 TT |
4470 | datum->sym_text, datum->sym_text_len, |
4471 | datum->text, datum->word); | |
4472 | } | |
4473 | ||
bb4142cf | 4474 | /* A callback for expand_symtabs_matching. */ |
eca864fe | 4475 | |
7b08b9eb | 4476 | static int |
bb4142cf | 4477 | symbol_completion_matcher (const char *name, void *user_data) |
ccefe4c4 TT |
4478 | { |
4479 | struct add_name_data *datum = (struct add_name_data *) user_data; | |
165195f4 | 4480 | |
1976171a | 4481 | return compare_symbol_name (name, datum->sym_text, datum->sym_text_len); |
9a044a89 TT |
4482 | } |
4483 | ||
49c4e619 | 4484 | VEC (char_ptr) * |
6f937416 PA |
4485 | default_make_symbol_completion_list_break_on (const char *text, |
4486 | const char *word, | |
2f68a895 TT |
4487 | const char *break_on, |
4488 | enum type_code code) | |
c906108c | 4489 | { |
41d27058 JB |
4490 | /* Problem: All of the symbols have to be copied because readline |
4491 | frees them. I'm not going to worry about this; hopefully there | |
4492 | won't be that many. */ | |
4493 | ||
de4f826b | 4494 | struct symbol *sym; |
43f3e411 | 4495 | struct compunit_symtab *cust; |
de4f826b DC |
4496 | struct minimal_symbol *msymbol; |
4497 | struct objfile *objfile; | |
3977b71f | 4498 | const struct block *b; |
edb3359d | 4499 | const struct block *surrounding_static_block, *surrounding_global_block; |
8157b174 | 4500 | struct block_iterator iter; |
c906108c | 4501 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 4502 | const char *sym_text; |
c906108c SS |
4503 | /* Length of sym_text. */ |
4504 | int sym_text_len; | |
ccefe4c4 | 4505 | struct add_name_data datum; |
821296b7 | 4506 | struct cleanup *back_to; |
c906108c | 4507 | |
41d27058 | 4508 | /* Now look for the symbol we are supposed to complete on. */ |
c906108c | 4509 | { |
6f937416 | 4510 | const char *p; |
c906108c | 4511 | char quote_found; |
6f937416 | 4512 | const char *quote_pos = NULL; |
c906108c SS |
4513 | |
4514 | /* First see if this is a quoted string. */ | |
4515 | quote_found = '\0'; | |
4516 | for (p = text; *p != '\0'; ++p) | |
4517 | { | |
4518 | if (quote_found != '\0') | |
4519 | { | |
4520 | if (*p == quote_found) | |
4521 | /* Found close quote. */ | |
4522 | quote_found = '\0'; | |
4523 | else if (*p == '\\' && p[1] == quote_found) | |
4524 | /* A backslash followed by the quote character | |
c5aa993b | 4525 | doesn't end the string. */ |
c906108c SS |
4526 | ++p; |
4527 | } | |
4528 | else if (*p == '\'' || *p == '"') | |
4529 | { | |
4530 | quote_found = *p; | |
4531 | quote_pos = p; | |
4532 | } | |
4533 | } | |
4534 | if (quote_found == '\'') | |
4535 | /* A string within single quotes can be a symbol, so complete on it. */ | |
4536 | sym_text = quote_pos + 1; | |
4537 | else if (quote_found == '"') | |
4538 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 4539 | to complete it any other way. */ |
c94fdfd0 | 4540 | { |
49c4e619 | 4541 | return NULL; |
c94fdfd0 | 4542 | } |
c906108c SS |
4543 | else |
4544 | { | |
4545 | /* It is not a quoted string. Break it based on the characters | |
4546 | which are in symbols. */ | |
4547 | while (p > text) | |
4548 | { | |
95699ff0 | 4549 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 4550 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
4551 | --p; |
4552 | else | |
4553 | break; | |
4554 | } | |
4555 | sym_text = p; | |
4556 | } | |
4557 | } | |
4558 | ||
4559 | sym_text_len = strlen (sym_text); | |
4560 | ||
1976171a JK |
4561 | /* Prepare SYM_TEXT_LEN for compare_symbol_name. */ |
4562 | ||
4563 | if (current_language->la_language == language_cplus | |
4564 | || current_language->la_language == language_java | |
4565 | || current_language->la_language == language_fortran) | |
4566 | { | |
4567 | /* These languages may have parameters entered by user but they are never | |
4568 | present in the partial symbol tables. */ | |
4569 | ||
4570 | const char *cs = memchr (sym_text, '(', sym_text_len); | |
4571 | ||
4572 | if (cs) | |
4573 | sym_text_len = cs - sym_text; | |
4574 | } | |
4575 | gdb_assert (sym_text[sym_text_len] == '\0' || sym_text[sym_text_len] == '('); | |
4576 | ||
49c4e619 | 4577 | return_val = NULL; |
821296b7 | 4578 | back_to = make_cleanup (do_free_completion_list, &return_val); |
c906108c | 4579 | |
ccefe4c4 TT |
4580 | datum.sym_text = sym_text; |
4581 | datum.sym_text_len = sym_text_len; | |
4582 | datum.text = text; | |
4583 | datum.word = word; | |
4584 | ||
c906108c | 4585 | /* Look through the partial symtabs for all symbols which begin |
7b08b9eb JK |
4586 | by matching SYM_TEXT. Expand all CUs that you find to the list. |
4587 | The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */ | |
bb4142cf DE |
4588 | expand_symtabs_matching (NULL, symbol_completion_matcher, ALL_DOMAIN, |
4589 | &datum); | |
c906108c SS |
4590 | |
4591 | /* At this point scan through the misc symbol vectors and add each | |
4592 | symbol you find to the list. Eventually we want to ignore | |
4593 | anything that isn't a text symbol (everything else will be | |
4594 | handled by the psymtab code above). */ | |
4595 | ||
2f68a895 TT |
4596 | if (code == TYPE_CODE_UNDEF) |
4597 | { | |
4598 | ALL_MSYMBOLS (objfile, msymbol) | |
4599 | { | |
4600 | QUIT; | |
efd66ac6 TT |
4601 | MCOMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, |
4602 | word); | |
9af17804 | 4603 | |
2f68a895 TT |
4604 | completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, |
4605 | word); | |
4606 | } | |
4607 | } | |
c906108c SS |
4608 | |
4609 | /* Search upwards from currently selected frame (so that we can | |
edb3359d DJ |
4610 | complete on local vars). Also catch fields of types defined in |
4611 | this places which match our text string. Only complete on types | |
c378eb4e | 4612 | visible from current context. */ |
edb3359d DJ |
4613 | |
4614 | b = get_selected_block (0); | |
4615 | surrounding_static_block = block_static_block (b); | |
4616 | surrounding_global_block = block_global_block (b); | |
4617 | if (surrounding_static_block != NULL) | |
4618 | while (b != surrounding_static_block) | |
4619 | { | |
4620 | QUIT; | |
c906108c | 4621 | |
edb3359d DJ |
4622 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
4623 | { | |
2f68a895 TT |
4624 | if (code == TYPE_CODE_UNDEF) |
4625 | { | |
4626 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
4627 | word); | |
4628 | completion_list_add_fields (sym, sym_text, sym_text_len, text, | |
4629 | word); | |
4630 | } | |
4631 | else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
4632 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
4633 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
4634 | word); | |
edb3359d | 4635 | } |
c5aa993b | 4636 | |
edb3359d DJ |
4637 | /* Stop when we encounter an enclosing function. Do not stop for |
4638 | non-inlined functions - the locals of the enclosing function | |
4639 | are in scope for a nested function. */ | |
4640 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
4641 | break; | |
4642 | b = BLOCK_SUPERBLOCK (b); | |
4643 | } | |
c906108c | 4644 | |
edb3359d | 4645 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 4646 | |
2f68a895 TT |
4647 | if (code == TYPE_CODE_UNDEF) |
4648 | { | |
4649 | if (surrounding_static_block != NULL) | |
4650 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
4651 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
edb3359d | 4652 | |
2f68a895 TT |
4653 | if (surrounding_global_block != NULL) |
4654 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
4655 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
4656 | } | |
c906108c SS |
4657 | |
4658 | /* Go through the symtabs and check the externs and statics for | |
4659 | symbols which match. */ | |
4660 | ||
43f3e411 | 4661 | ALL_COMPUNITS (objfile, cust) |
c5aa993b JM |
4662 | { |
4663 | QUIT; | |
43f3e411 | 4664 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), GLOBAL_BLOCK); |
de4f826b | 4665 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 4666 | { |
2f68a895 TT |
4667 | if (code == TYPE_CODE_UNDEF |
4668 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
4669 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
4670 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); | |
c5aa993b JM |
4671 | } |
4672 | } | |
c906108c | 4673 | |
43f3e411 | 4674 | ALL_COMPUNITS (objfile, cust) |
c5aa993b JM |
4675 | { |
4676 | QUIT; | |
43f3e411 | 4677 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), STATIC_BLOCK); |
de4f826b | 4678 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 4679 | { |
2f68a895 TT |
4680 | if (code == TYPE_CODE_UNDEF |
4681 | || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN | |
4682 | && TYPE_CODE (SYMBOL_TYPE (sym)) == code)) | |
4683 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); | |
c5aa993b JM |
4684 | } |
4685 | } | |
c906108c | 4686 | |
2f68a895 TT |
4687 | /* Skip macros if we are completing a struct tag -- arguable but |
4688 | usually what is expected. */ | |
4689 | if (current_language->la_macro_expansion == macro_expansion_c | |
4690 | && code == TYPE_CODE_UNDEF) | |
9a044a89 TT |
4691 | { |
4692 | struct macro_scope *scope; | |
9a044a89 TT |
4693 | |
4694 | /* Add any macros visible in the default scope. Note that this | |
4695 | may yield the occasional wrong result, because an expression | |
4696 | might be evaluated in a scope other than the default. For | |
4697 | example, if the user types "break file:line if <TAB>", the | |
4698 | resulting expression will be evaluated at "file:line" -- but | |
4699 | at there does not seem to be a way to detect this at | |
4700 | completion time. */ | |
4701 | scope = default_macro_scope (); | |
4702 | if (scope) | |
4703 | { | |
4704 | macro_for_each_in_scope (scope->file, scope->line, | |
4705 | add_macro_name, &datum); | |
4706 | xfree (scope); | |
4707 | } | |
4708 | ||
4709 | /* User-defined macros are always visible. */ | |
4710 | macro_for_each (macro_user_macros, add_macro_name, &datum); | |
4711 | } | |
4712 | ||
821296b7 | 4713 | discard_cleanups (back_to); |
c906108c SS |
4714 | return (return_val); |
4715 | } | |
4716 | ||
49c4e619 | 4717 | VEC (char_ptr) * |
6f937416 | 4718 | default_make_symbol_completion_list (const char *text, const char *word, |
2f68a895 | 4719 | enum type_code code) |
f55ee35c | 4720 | { |
2f68a895 | 4721 | return default_make_symbol_completion_list_break_on (text, word, "", code); |
f55ee35c JK |
4722 | } |
4723 | ||
49c4e619 TT |
4724 | /* Return a vector of all symbols (regardless of class) which begin by |
4725 | matching TEXT. If the answer is no symbols, then the return value | |
4726 | is NULL. */ | |
41d27058 | 4727 | |
49c4e619 | 4728 | VEC (char_ptr) * |
6f937416 | 4729 | make_symbol_completion_list (const char *text, const char *word) |
41d27058 | 4730 | { |
2f68a895 TT |
4731 | return current_language->la_make_symbol_completion_list (text, word, |
4732 | TYPE_CODE_UNDEF); | |
4733 | } | |
4734 | ||
4735 | /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN | |
4736 | symbols whose type code is CODE. */ | |
4737 | ||
4738 | VEC (char_ptr) * | |
6f937416 PA |
4739 | make_symbol_completion_type (const char *text, const char *word, |
4740 | enum type_code code) | |
2f68a895 TT |
4741 | { |
4742 | gdb_assert (code == TYPE_CODE_UNION | |
4743 | || code == TYPE_CODE_STRUCT | |
2f68a895 TT |
4744 | || code == TYPE_CODE_ENUM); |
4745 | return current_language->la_make_symbol_completion_list (text, word, code); | |
41d27058 JB |
4746 | } |
4747 | ||
d8906c6f TJB |
4748 | /* Like make_symbol_completion_list, but suitable for use as a |
4749 | completion function. */ | |
4750 | ||
49c4e619 | 4751 | VEC (char_ptr) * |
d8906c6f | 4752 | make_symbol_completion_list_fn (struct cmd_list_element *ignore, |
6f937416 | 4753 | const char *text, const char *word) |
d8906c6f TJB |
4754 | { |
4755 | return make_symbol_completion_list (text, word); | |
4756 | } | |
4757 | ||
c94fdfd0 EZ |
4758 | /* Like make_symbol_completion_list, but returns a list of symbols |
4759 | defined in a source file FILE. */ | |
4760 | ||
49c4e619 | 4761 | VEC (char_ptr) * |
6f937416 PA |
4762 | make_file_symbol_completion_list (const char *text, const char *word, |
4763 | const char *srcfile) | |
c94fdfd0 | 4764 | { |
52f0bd74 AC |
4765 | struct symbol *sym; |
4766 | struct symtab *s; | |
4767 | struct block *b; | |
8157b174 | 4768 | struct block_iterator iter; |
c94fdfd0 | 4769 | /* The symbol we are completing on. Points in same buffer as text. */ |
6f937416 | 4770 | const char *sym_text; |
c94fdfd0 EZ |
4771 | /* Length of sym_text. */ |
4772 | int sym_text_len; | |
4773 | ||
4774 | /* Now look for the symbol we are supposed to complete on. | |
4775 | FIXME: This should be language-specific. */ | |
4776 | { | |
6f937416 | 4777 | const char *p; |
c94fdfd0 | 4778 | char quote_found; |
6f937416 | 4779 | const char *quote_pos = NULL; |
c94fdfd0 EZ |
4780 | |
4781 | /* First see if this is a quoted string. */ | |
4782 | quote_found = '\0'; | |
4783 | for (p = text; *p != '\0'; ++p) | |
4784 | { | |
4785 | if (quote_found != '\0') | |
4786 | { | |
4787 | if (*p == quote_found) | |
4788 | /* Found close quote. */ | |
4789 | quote_found = '\0'; | |
4790 | else if (*p == '\\' && p[1] == quote_found) | |
4791 | /* A backslash followed by the quote character | |
4792 | doesn't end the string. */ | |
4793 | ++p; | |
4794 | } | |
4795 | else if (*p == '\'' || *p == '"') | |
4796 | { | |
4797 | quote_found = *p; | |
4798 | quote_pos = p; | |
4799 | } | |
4800 | } | |
4801 | if (quote_found == '\'') | |
4802 | /* A string within single quotes can be a symbol, so complete on it. */ | |
4803 | sym_text = quote_pos + 1; | |
4804 | else if (quote_found == '"') | |
4805 | /* A double-quoted string is never a symbol, nor does it make sense | |
4806 | to complete it any other way. */ | |
4807 | { | |
49c4e619 | 4808 | return NULL; |
c94fdfd0 EZ |
4809 | } |
4810 | else | |
4811 | { | |
69636828 AF |
4812 | /* Not a quoted string. */ |
4813 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
4814 | } |
4815 | } | |
4816 | ||
4817 | sym_text_len = strlen (sym_text); | |
4818 | ||
49c4e619 | 4819 | return_val = NULL; |
c94fdfd0 EZ |
4820 | |
4821 | /* Find the symtab for SRCFILE (this loads it if it was not yet read | |
4822 | in). */ | |
4823 | s = lookup_symtab (srcfile); | |
4824 | if (s == NULL) | |
4825 | { | |
4826 | /* Maybe they typed the file with leading directories, while the | |
4827 | symbol tables record only its basename. */ | |
31889e00 | 4828 | const char *tail = lbasename (srcfile); |
c94fdfd0 EZ |
4829 | |
4830 | if (tail > srcfile) | |
4831 | s = lookup_symtab (tail); | |
4832 | } | |
4833 | ||
4834 | /* If we have no symtab for that file, return an empty list. */ | |
4835 | if (s == NULL) | |
4836 | return (return_val); | |
4837 | ||
4838 | /* Go through this symtab and check the externs and statics for | |
4839 | symbols which match. */ | |
4840 | ||
439247b6 | 4841 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), GLOBAL_BLOCK); |
de4f826b | 4842 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 4843 | { |
c94fdfd0 EZ |
4844 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4845 | } | |
4846 | ||
439247b6 | 4847 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 4848 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 4849 | { |
c94fdfd0 EZ |
4850 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4851 | } | |
4852 | ||
4853 | return (return_val); | |
4854 | } | |
4855 | ||
4856 | /* A helper function for make_source_files_completion_list. It adds | |
4857 | another file name to a list of possible completions, growing the | |
4858 | list as necessary. */ | |
4859 | ||
4860 | static void | |
6f937416 | 4861 | add_filename_to_list (const char *fname, const char *text, const char *word, |
49c4e619 | 4862 | VEC (char_ptr) **list) |
c94fdfd0 EZ |
4863 | { |
4864 | char *new; | |
4865 | size_t fnlen = strlen (fname); | |
4866 | ||
c94fdfd0 EZ |
4867 | if (word == text) |
4868 | { | |
4869 | /* Return exactly fname. */ | |
4870 | new = xmalloc (fnlen + 5); | |
4871 | strcpy (new, fname); | |
4872 | } | |
4873 | else if (word > text) | |
4874 | { | |
4875 | /* Return some portion of fname. */ | |
4876 | new = xmalloc (fnlen + 5); | |
4877 | strcpy (new, fname + (word - text)); | |
4878 | } | |
4879 | else | |
4880 | { | |
4881 | /* Return some of TEXT plus fname. */ | |
4882 | new = xmalloc (fnlen + (text - word) + 5); | |
4883 | strncpy (new, word, text - word); | |
4884 | new[text - word] = '\0'; | |
4885 | strcat (new, fname); | |
4886 | } | |
49c4e619 | 4887 | VEC_safe_push (char_ptr, *list, new); |
c94fdfd0 EZ |
4888 | } |
4889 | ||
4890 | static int | |
4891 | not_interesting_fname (const char *fname) | |
4892 | { | |
4893 | static const char *illegal_aliens[] = { | |
4894 | "_globals_", /* inserted by coff_symtab_read */ | |
4895 | NULL | |
4896 | }; | |
4897 | int i; | |
4898 | ||
4899 | for (i = 0; illegal_aliens[i]; i++) | |
4900 | { | |
0ba1096a | 4901 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
4902 | return 1; |
4903 | } | |
4904 | return 0; | |
4905 | } | |
4906 | ||
ccefe4c4 TT |
4907 | /* An object of this type is passed as the user_data argument to |
4908 | map_partial_symbol_filenames. */ | |
4909 | struct add_partial_filename_data | |
4910 | { | |
9fdc877b | 4911 | struct filename_seen_cache *filename_seen_cache; |
6f937416 PA |
4912 | const char *text; |
4913 | const char *word; | |
ccefe4c4 | 4914 | int text_len; |
49c4e619 | 4915 | VEC (char_ptr) **list; |
ccefe4c4 TT |
4916 | }; |
4917 | ||
4918 | /* A callback for map_partial_symbol_filenames. */ | |
eca864fe | 4919 | |
ccefe4c4 | 4920 | static void |
2837d59e | 4921 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4922 | void *user_data) |
4923 | { | |
4924 | struct add_partial_filename_data *data = user_data; | |
4925 | ||
4926 | if (not_interesting_fname (filename)) | |
4927 | return; | |
9fdc877b | 4928 | if (!filename_seen (data->filename_seen_cache, filename, 1) |
0ba1096a | 4929 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
4930 | { |
4931 | /* This file matches for a completion; add it to the | |
4932 | current list of matches. */ | |
49c4e619 | 4933 | add_filename_to_list (filename, data->text, data->word, data->list); |
ccefe4c4 TT |
4934 | } |
4935 | else | |
4936 | { | |
4937 | const char *base_name = lbasename (filename); | |
433759f7 | 4938 | |
ccefe4c4 | 4939 | if (base_name != filename |
9fdc877b | 4940 | && !filename_seen (data->filename_seen_cache, base_name, 1) |
0ba1096a | 4941 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
49c4e619 | 4942 | add_filename_to_list (base_name, data->text, data->word, data->list); |
ccefe4c4 TT |
4943 | } |
4944 | } | |
4945 | ||
49c4e619 TT |
4946 | /* Return a vector of all source files whose names begin with matching |
4947 | TEXT. The file names are looked up in the symbol tables of this | |
4948 | program. If the answer is no matchess, then the return value is | |
4949 | NULL. */ | |
c94fdfd0 | 4950 | |
49c4e619 | 4951 | VEC (char_ptr) * |
6f937416 | 4952 | make_source_files_completion_list (const char *text, const char *word) |
c94fdfd0 | 4953 | { |
43f3e411 | 4954 | struct compunit_symtab *cu; |
52f0bd74 | 4955 | struct symtab *s; |
52f0bd74 | 4956 | struct objfile *objfile; |
c94fdfd0 | 4957 | size_t text_len = strlen (text); |
49c4e619 | 4958 | VEC (char_ptr) *list = NULL; |
31889e00 | 4959 | const char *base_name; |
ccefe4c4 | 4960 | struct add_partial_filename_data datum; |
9fdc877b DE |
4961 | struct filename_seen_cache *filename_seen_cache; |
4962 | struct cleanup *back_to, *cache_cleanup; | |
c94fdfd0 | 4963 | |
c94fdfd0 EZ |
4964 | if (!have_full_symbols () && !have_partial_symbols ()) |
4965 | return list; | |
4966 | ||
821296b7 SA |
4967 | back_to = make_cleanup (do_free_completion_list, &list); |
4968 | ||
9fdc877b DE |
4969 | filename_seen_cache = create_filename_seen_cache (); |
4970 | cache_cleanup = make_cleanup (delete_filename_seen_cache, | |
4971 | filename_seen_cache); | |
4972 | ||
43f3e411 | 4973 | ALL_FILETABS (objfile, cu, s) |
c94fdfd0 EZ |
4974 | { |
4975 | if (not_interesting_fname (s->filename)) | |
4976 | continue; | |
9fdc877b | 4977 | if (!filename_seen (filename_seen_cache, s->filename, 1) |
0ba1096a | 4978 | && filename_ncmp (s->filename, text, text_len) == 0) |
c94fdfd0 EZ |
4979 | { |
4980 | /* This file matches for a completion; add it to the current | |
4981 | list of matches. */ | |
49c4e619 | 4982 | add_filename_to_list (s->filename, text, word, &list); |
c94fdfd0 EZ |
4983 | } |
4984 | else | |
4985 | { | |
4986 | /* NOTE: We allow the user to type a base name when the | |
4987 | debug info records leading directories, but not the other | |
4988 | way around. This is what subroutines of breakpoint | |
4989 | command do when they parse file names. */ | |
31889e00 | 4990 | base_name = lbasename (s->filename); |
c94fdfd0 | 4991 | if (base_name != s->filename |
9fdc877b | 4992 | && !filename_seen (filename_seen_cache, base_name, 1) |
0ba1096a | 4993 | && filename_ncmp (base_name, text, text_len) == 0) |
49c4e619 | 4994 | add_filename_to_list (base_name, text, word, &list); |
c94fdfd0 EZ |
4995 | } |
4996 | } | |
4997 | ||
9fdc877b | 4998 | datum.filename_seen_cache = filename_seen_cache; |
ccefe4c4 TT |
4999 | datum.text = text; |
5000 | datum.word = word; | |
5001 | datum.text_len = text_len; | |
5002 | datum.list = &list; | |
bb4142cf DE |
5003 | map_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
5004 | 0 /*need_fullname*/); | |
9fdc877b DE |
5005 | |
5006 | do_cleanups (cache_cleanup); | |
821296b7 | 5007 | discard_cleanups (back_to); |
c94fdfd0 EZ |
5008 | |
5009 | return list; | |
5010 | } | |
c906108c | 5011 | \f |
51cc5b07 | 5012 | /* Track MAIN */ |
32ac0d11 TT |
5013 | |
5014 | /* Return the "main_info" object for the current program space. If | |
5015 | the object has not yet been created, create it and fill in some | |
5016 | default values. */ | |
5017 | ||
5018 | static struct main_info * | |
5019 | get_main_info (void) | |
5020 | { | |
5021 | struct main_info *info = program_space_data (current_program_space, | |
5022 | main_progspace_key); | |
5023 | ||
5024 | if (info == NULL) | |
5025 | { | |
3d548a53 TT |
5026 | /* It may seem strange to store the main name in the progspace |
5027 | and also in whatever objfile happens to see a main name in | |
5028 | its debug info. The reason for this is mainly historical: | |
5029 | gdb returned "main" as the name even if no function named | |
5030 | "main" was defined the program; and this approach lets us | |
5031 | keep compatibility. */ | |
32ac0d11 TT |
5032 | info = XCNEW (struct main_info); |
5033 | info->language_of_main = language_unknown; | |
5034 | set_program_space_data (current_program_space, main_progspace_key, | |
5035 | info); | |
5036 | } | |
5037 | ||
5038 | return info; | |
5039 | } | |
5040 | ||
5041 | /* A cleanup to destroy a struct main_info when a progspace is | |
5042 | destroyed. */ | |
5043 | ||
5044 | static void | |
5045 | main_info_cleanup (struct program_space *pspace, void *data) | |
5046 | { | |
5047 | struct main_info *info = data; | |
5048 | ||
5049 | if (info != NULL) | |
5050 | xfree (info->name_of_main); | |
5051 | xfree (info); | |
5052 | } | |
51cc5b07 | 5053 | |
3d548a53 | 5054 | static void |
9e6c82ad | 5055 | set_main_name (const char *name, enum language lang) |
51cc5b07 | 5056 | { |
32ac0d11 TT |
5057 | struct main_info *info = get_main_info (); |
5058 | ||
5059 | if (info->name_of_main != NULL) | |
51cc5b07 | 5060 | { |
32ac0d11 TT |
5061 | xfree (info->name_of_main); |
5062 | info->name_of_main = NULL; | |
5063 | info->language_of_main = language_unknown; | |
51cc5b07 AC |
5064 | } |
5065 | if (name != NULL) | |
5066 | { | |
32ac0d11 TT |
5067 | info->name_of_main = xstrdup (name); |
5068 | info->language_of_main = lang; | |
51cc5b07 AC |
5069 | } |
5070 | } | |
5071 | ||
ea53e89f JB |
5072 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
5073 | accordingly. */ | |
5074 | ||
5075 | static void | |
5076 | find_main_name (void) | |
5077 | { | |
cd6c7346 | 5078 | const char *new_main_name; |
3d548a53 TT |
5079 | struct objfile *objfile; |
5080 | ||
5081 | /* First check the objfiles to see whether a debuginfo reader has | |
5082 | picked up the appropriate main name. Historically the main name | |
5083 | was found in a more or less random way; this approach instead | |
5084 | relies on the order of objfile creation -- which still isn't | |
5085 | guaranteed to get the correct answer, but is just probably more | |
5086 | accurate. */ | |
5087 | ALL_OBJFILES (objfile) | |
5088 | { | |
5089 | if (objfile->per_bfd->name_of_main != NULL) | |
5090 | { | |
5091 | set_main_name (objfile->per_bfd->name_of_main, | |
5092 | objfile->per_bfd->language_of_main); | |
5093 | return; | |
5094 | } | |
5095 | } | |
ea53e89f JB |
5096 | |
5097 | /* Try to see if the main procedure is in Ada. */ | |
5098 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
5099 | be to add a new method in the language vector, and call this | |
5100 | method for each language until one of them returns a non-empty | |
5101 | name. This would allow us to remove this hard-coded call to | |
5102 | an Ada function. It is not clear that this is a better approach | |
5103 | at this point, because all methods need to be written in a way | |
c378eb4e | 5104 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
5105 | important that a method does not return a wrong name for the main |
5106 | procedure if the main procedure is actually written in a different | |
5107 | language. It is easy to guaranty this with Ada, since we use a | |
5108 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 5109 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
5110 | be guarantied for languages such as C, for instance. This suggests |
5111 | that order of call for these methods becomes important, which means | |
5112 | a more complicated approach. */ | |
5113 | new_main_name = ada_main_name (); | |
5114 | if (new_main_name != NULL) | |
9af17804 | 5115 | { |
9e6c82ad | 5116 | set_main_name (new_main_name, language_ada); |
ea53e89f JB |
5117 | return; |
5118 | } | |
5119 | ||
63778547 IB |
5120 | new_main_name = d_main_name (); |
5121 | if (new_main_name != NULL) | |
5122 | { | |
5123 | set_main_name (new_main_name, language_d); | |
5124 | return; | |
5125 | } | |
5126 | ||
a766d390 DE |
5127 | new_main_name = go_main_name (); |
5128 | if (new_main_name != NULL) | |
5129 | { | |
9e6c82ad | 5130 | set_main_name (new_main_name, language_go); |
a766d390 DE |
5131 | return; |
5132 | } | |
5133 | ||
cd6c7346 PM |
5134 | new_main_name = pascal_main_name (); |
5135 | if (new_main_name != NULL) | |
9af17804 | 5136 | { |
9e6c82ad | 5137 | set_main_name (new_main_name, language_pascal); |
cd6c7346 PM |
5138 | return; |
5139 | } | |
5140 | ||
ea53e89f JB |
5141 | /* The languages above didn't identify the name of the main procedure. |
5142 | Fallback to "main". */ | |
9e6c82ad | 5143 | set_main_name ("main", language_unknown); |
ea53e89f JB |
5144 | } |
5145 | ||
51cc5b07 AC |
5146 | char * |
5147 | main_name (void) | |
5148 | { | |
32ac0d11 TT |
5149 | struct main_info *info = get_main_info (); |
5150 | ||
5151 | if (info->name_of_main == NULL) | |
ea53e89f JB |
5152 | find_main_name (); |
5153 | ||
32ac0d11 | 5154 | return info->name_of_main; |
51cc5b07 AC |
5155 | } |
5156 | ||
9e6c82ad TT |
5157 | /* Return the language of the main function. If it is not known, |
5158 | return language_unknown. */ | |
5159 | ||
5160 | enum language | |
5161 | main_language (void) | |
5162 | { | |
32ac0d11 TT |
5163 | struct main_info *info = get_main_info (); |
5164 | ||
5165 | if (info->name_of_main == NULL) | |
5166 | find_main_name (); | |
5167 | ||
5168 | return info->language_of_main; | |
9e6c82ad TT |
5169 | } |
5170 | ||
ea53e89f JB |
5171 | /* Handle ``executable_changed'' events for the symtab module. */ |
5172 | ||
5173 | static void | |
781b42b0 | 5174 | symtab_observer_executable_changed (void) |
ea53e89f JB |
5175 | { |
5176 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
9e6c82ad | 5177 | set_main_name (NULL, language_unknown); |
ea53e89f | 5178 | } |
51cc5b07 | 5179 | |
a6c727b2 DJ |
5180 | /* Return 1 if the supplied producer string matches the ARM RealView |
5181 | compiler (armcc). */ | |
5182 | ||
5183 | int | |
5184 | producer_is_realview (const char *producer) | |
5185 | { | |
5186 | static const char *const arm_idents[] = { | |
5187 | "ARM C Compiler, ADS", | |
5188 | "Thumb C Compiler, ADS", | |
5189 | "ARM C++ Compiler, ADS", | |
5190 | "Thumb C++ Compiler, ADS", | |
5191 | "ARM/Thumb C/C++ Compiler, RVCT", | |
5192 | "ARM C/C++ Compiler, RVCT" | |
5193 | }; | |
5194 | int i; | |
5195 | ||
5196 | if (producer == NULL) | |
5197 | return 0; | |
5198 | ||
5199 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
5200 | if (strncmp (producer, arm_idents[i], strlen (arm_idents[i])) == 0) | |
5201 | return 1; | |
5202 | ||
5203 | return 0; | |
5204 | } | |
ed0616c6 | 5205 | |
f1e6e072 TT |
5206 | \f |
5207 | ||
5208 | /* The next index to hand out in response to a registration request. */ | |
5209 | ||
5210 | static int next_aclass_value = LOC_FINAL_VALUE; | |
5211 | ||
5212 | /* The maximum number of "aclass" registrations we support. This is | |
5213 | constant for convenience. */ | |
5214 | #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10) | |
5215 | ||
5216 | /* The objects representing the various "aclass" values. The elements | |
5217 | from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent | |
5218 | elements are those registered at gdb initialization time. */ | |
5219 | ||
5220 | static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS]; | |
5221 | ||
5222 | /* The globally visible pointer. This is separate from 'symbol_impl' | |
5223 | so that it can be const. */ | |
5224 | ||
5225 | const struct symbol_impl *symbol_impls = &symbol_impl[0]; | |
5226 | ||
5227 | /* Make sure we saved enough room in struct symbol. */ | |
5228 | ||
5229 | gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS)); | |
5230 | ||
5231 | /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS | |
5232 | is the ops vector associated with this index. This returns the new | |
5233 | index, which should be used as the aclass_index field for symbols | |
5234 | of this type. */ | |
5235 | ||
5236 | int | |
5237 | register_symbol_computed_impl (enum address_class aclass, | |
5238 | const struct symbol_computed_ops *ops) | |
5239 | { | |
5240 | int result = next_aclass_value++; | |
5241 | ||
5242 | gdb_assert (aclass == LOC_COMPUTED); | |
5243 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5244 | symbol_impl[result].aclass = aclass; | |
5245 | symbol_impl[result].ops_computed = ops; | |
5246 | ||
24d6c2a0 TT |
5247 | /* Sanity check OPS. */ |
5248 | gdb_assert (ops != NULL); | |
5249 | gdb_assert (ops->tracepoint_var_ref != NULL); | |
5250 | gdb_assert (ops->describe_location != NULL); | |
5251 | gdb_assert (ops->read_needs_frame != NULL); | |
5252 | gdb_assert (ops->read_variable != NULL); | |
5253 | ||
f1e6e072 TT |
5254 | return result; |
5255 | } | |
5256 | ||
5257 | /* Register a function with frame base type. ACLASS must be LOC_BLOCK. | |
5258 | OPS is the ops vector associated with this index. This returns the | |
5259 | new index, which should be used as the aclass_index field for symbols | |
5260 | of this type. */ | |
5261 | ||
5262 | int | |
5263 | register_symbol_block_impl (enum address_class aclass, | |
5264 | const struct symbol_block_ops *ops) | |
5265 | { | |
5266 | int result = next_aclass_value++; | |
5267 | ||
5268 | gdb_assert (aclass == LOC_BLOCK); | |
5269 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5270 | symbol_impl[result].aclass = aclass; | |
5271 | symbol_impl[result].ops_block = ops; | |
5272 | ||
5273 | /* Sanity check OPS. */ | |
5274 | gdb_assert (ops != NULL); | |
5275 | gdb_assert (ops->find_frame_base_location != NULL); | |
5276 | ||
5277 | return result; | |
5278 | } | |
5279 | ||
5280 | /* Register a register symbol type. ACLASS must be LOC_REGISTER or | |
5281 | LOC_REGPARM_ADDR. OPS is the register ops vector associated with | |
5282 | this index. This returns the new index, which should be used as | |
5283 | the aclass_index field for symbols of this type. */ | |
5284 | ||
5285 | int | |
5286 | register_symbol_register_impl (enum address_class aclass, | |
5287 | const struct symbol_register_ops *ops) | |
5288 | { | |
5289 | int result = next_aclass_value++; | |
5290 | ||
5291 | gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR); | |
5292 | gdb_assert (result < MAX_SYMBOL_IMPLS); | |
5293 | symbol_impl[result].aclass = aclass; | |
5294 | symbol_impl[result].ops_register = ops; | |
5295 | ||
5296 | return result; | |
5297 | } | |
5298 | ||
5299 | /* Initialize elements of 'symbol_impl' for the constants in enum | |
5300 | address_class. */ | |
5301 | ||
5302 | static void | |
5303 | initialize_ordinary_address_classes (void) | |
5304 | { | |
5305 | int i; | |
5306 | ||
5307 | for (i = 0; i < LOC_FINAL_VALUE; ++i) | |
5308 | symbol_impl[i].aclass = i; | |
5309 | } | |
5310 | ||
5311 | \f | |
5312 | ||
e623cf5d TT |
5313 | /* Initialize the symbol SYM. */ |
5314 | ||
5315 | void | |
5316 | initialize_symbol (struct symbol *sym) | |
5317 | { | |
5318 | memset (sym, 0, sizeof (*sym)); | |
e27d198c | 5319 | SYMBOL_SECTION (sym) = -1; |
e623cf5d TT |
5320 | } |
5321 | ||
5322 | /* Allocate and initialize a new 'struct symbol' on OBJFILE's | |
5323 | obstack. */ | |
5324 | ||
5325 | struct symbol * | |
5326 | allocate_symbol (struct objfile *objfile) | |
5327 | { | |
5328 | struct symbol *result; | |
5329 | ||
5330 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
e27d198c | 5331 | SYMBOL_SECTION (result) = -1; |
e623cf5d TT |
5332 | |
5333 | return result; | |
5334 | } | |
5335 | ||
5336 | /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's | |
5337 | obstack. */ | |
5338 | ||
5339 | struct template_symbol * | |
5340 | allocate_template_symbol (struct objfile *objfile) | |
5341 | { | |
5342 | struct template_symbol *result; | |
5343 | ||
5344 | result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol); | |
e27d198c | 5345 | SYMBOL_SECTION (&result->base) = -1; |
e623cf5d TT |
5346 | |
5347 | return result; | |
5348 | } | |
5349 | ||
5350 | \f | |
5351 | ||
c906108c | 5352 | void |
fba45db2 | 5353 | _initialize_symtab (void) |
c906108c | 5354 | { |
f1e6e072 TT |
5355 | initialize_ordinary_address_classes (); |
5356 | ||
32ac0d11 TT |
5357 | main_progspace_key |
5358 | = register_program_space_data_with_cleanup (NULL, main_info_cleanup); | |
5359 | ||
1bedd215 AC |
5360 | add_info ("variables", variables_info, _("\ |
5361 | All global and static variable names, or those matching REGEXP.")); | |
c906108c | 5362 | if (dbx_commands) |
1bedd215 AC |
5363 | add_com ("whereis", class_info, variables_info, _("\ |
5364 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
5365 | |
5366 | add_info ("functions", functions_info, | |
1bedd215 | 5367 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
5368 | |
5369 | /* FIXME: This command has at least the following problems: | |
5370 | 1. It prints builtin types (in a very strange and confusing fashion). | |
5371 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
5372 | typedef struct foo *FOO |
5373 | type_print prints "FOO" when we want to make it (in this situation) | |
5374 | print "struct foo *". | |
c906108c SS |
5375 | I also think "ptype" or "whatis" is more likely to be useful (but if |
5376 | there is much disagreement "info types" can be fixed). */ | |
5377 | add_info ("types", types_info, | |
1bedd215 | 5378 | _("All type names, or those matching REGEXP.")); |
c906108c | 5379 | |
c906108c | 5380 | add_info ("sources", sources_info, |
1bedd215 | 5381 | _("Source files in the program.")); |
c906108c SS |
5382 | |
5383 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 5384 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c SS |
5385 | |
5386 | if (xdb_commands) | |
5387 | { | |
1bedd215 AC |
5388 | add_com ("lf", class_info, sources_info, |
5389 | _("Source files in the program")); | |
5390 | add_com ("lg", class_info, variables_info, _("\ | |
5391 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
5392 | } |
5393 | ||
717d2f5a JB |
5394 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
5395 | multiple_symbols_modes, &multiple_symbols_mode, | |
5396 | _("\ | |
5397 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
5398 | in an expression."), _("\ | |
5399 | Show how the debugger handles ambiguities in expressions."), _("\ | |
5400 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
5401 | NULL, NULL, &setlist, &showlist); | |
5402 | ||
c011a4f4 DE |
5403 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
5404 | &basenames_may_differ, _("\ | |
5405 | Set whether a source file may have multiple base names."), _("\ | |
5406 | Show whether a source file may have multiple base names."), _("\ | |
5407 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
5408 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
5409 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
5410 | before comparing them. Canonicalization is an expensive operation,\n\ | |
5411 | but it allows the same file be known by more than one base name.\n\ | |
5412 | If not set (the default), all source files are assumed to have just\n\ | |
5413 | one base name, and gdb will do file name comparisons more efficiently."), | |
5414 | NULL, NULL, | |
5415 | &setlist, &showlist); | |
5416 | ||
db0fec5c DE |
5417 | add_setshow_zuinteger_cmd ("symtab-create", no_class, &symtab_create_debug, |
5418 | _("Set debugging of symbol table creation."), | |
5419 | _("Show debugging of symbol table creation."), _("\ | |
5420 | When enabled (non-zero), debugging messages are printed when building\n\ | |
5421 | symbol tables. A value of 1 (one) normally provides enough information.\n\ | |
5422 | A value greater than 1 provides more verbose information."), | |
5423 | NULL, | |
5424 | NULL, | |
5425 | &setdebuglist, &showdebuglist); | |
45cfd468 | 5426 | |
cc485e62 DE |
5427 | add_setshow_zuinteger_cmd ("symbol-lookup", no_class, &symbol_lookup_debug, |
5428 | _("\ | |
5429 | Set debugging of symbol lookup."), _("\ | |
5430 | Show debugging of symbol lookup."), _("\ | |
5431 | When enabled (non-zero), symbol lookups are logged."), | |
5432 | NULL, NULL, | |
5433 | &setdebuglist, &showdebuglist); | |
5434 | ||
ea53e89f | 5435 | observer_attach_executable_changed (symtab_observer_executable_changed); |
c906108c | 5436 | } |