Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1986-2004, 2007-2012 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" | |
30 | #include "call-cmds.h" | |
88987551 | 31 | #include "gdb_regex.h" |
c906108c SS |
32 | #include "expression.h" |
33 | #include "language.h" | |
34 | #include "demangle.h" | |
35 | #include "inferior.h" | |
c5f0f3d0 | 36 | #include "linespec.h" |
0378c332 | 37 | #include "source.h" |
a7fdf62f | 38 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 39 | #include "objc-lang.h" |
6aecb9c2 | 40 | #include "d-lang.h" |
1f8173e6 | 41 | #include "ada-lang.h" |
cd6c7346 | 42 | #include "p-lang.h" |
ff013f42 | 43 | #include "addrmap.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> | |
53 | #include "gdb_string.h" | |
54 | #include "gdb_stat.h" | |
55 | #include <ctype.h> | |
015a42b4 | 56 | #include "cp-abi.h" |
71c25dea | 57 | #include "cp-support.h" |
ea53e89f | 58 | #include "observer.h" |
94277a38 | 59 | #include "gdb_assert.h" |
3a40aaa0 | 60 | #include "solist.h" |
9a044a89 TT |
61 | #include "macrotab.h" |
62 | #include "macroscope.h" | |
c906108c | 63 | |
ccefe4c4 TT |
64 | #include "psymtab.h" |
65 | ||
c906108c SS |
66 | /* Prototypes for local functions */ |
67 | ||
a14ed312 | 68 | static void completion_list_add_name (char *, char *, int, char *, char *); |
c906108c | 69 | |
a14ed312 | 70 | static void rbreak_command (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void types_info (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void functions_info (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void variables_info (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void sources_info (char *, int); |
c906108c | 79 | |
d092d1a2 | 80 | static void output_source_filename (const char *, int *); |
c906108c | 81 | |
f8eba3c6 | 82 | static int find_line_common (struct linetable *, int, int *, int); |
c906108c | 83 | |
3121eff0 | 84 | static struct symbol *lookup_symbol_aux (const char *name, |
3121eff0 | 85 | const struct block *block, |
176620f1 | 86 | const domain_enum domain, |
53c5240f | 87 | enum language language, |
774b6a14 | 88 | int *is_a_field_of_this); |
fba7f19c | 89 | |
e4051eeb DC |
90 | static |
91 | struct symbol *lookup_symbol_aux_local (const char *name, | |
e4051eeb | 92 | const struct block *block, |
13387711 SW |
93 | const domain_enum domain, |
94 | enum language language); | |
8155455b DC |
95 | |
96 | static | |
97 | struct symbol *lookup_symbol_aux_symtabs (int block_index, | |
98 | const char *name, | |
21b556f4 | 99 | const domain_enum domain); |
8155455b DC |
100 | |
101 | static | |
ccefe4c4 TT |
102 | struct symbol *lookup_symbol_aux_quick (struct objfile *objfile, |
103 | int block_index, | |
104 | const char *name, | |
105 | const domain_enum domain); | |
c906108c | 106 | |
a14ed312 | 107 | static void print_msymbol_info (struct minimal_symbol *); |
c906108c | 108 | |
a14ed312 | 109 | void _initialize_symtab (void); |
c906108c SS |
110 | |
111 | /* */ | |
112 | ||
c011a4f4 DE |
113 | /* Non-zero if a file may be known by two different basenames. |
114 | This is the uncommon case, and significantly slows down gdb. | |
115 | Default set to "off" to not slow down the common case. */ | |
116 | int basenames_may_differ = 0; | |
117 | ||
717d2f5a JB |
118 | /* Allow the user to configure the debugger behavior with respect |
119 | to multiple-choice menus when more than one symbol matches during | |
120 | a symbol lookup. */ | |
121 | ||
7fc830e2 MK |
122 | const char multiple_symbols_ask[] = "ask"; |
123 | const char multiple_symbols_all[] = "all"; | |
124 | const char multiple_symbols_cancel[] = "cancel"; | |
717d2f5a JB |
125 | static const char *multiple_symbols_modes[] = |
126 | { | |
127 | multiple_symbols_ask, | |
128 | multiple_symbols_all, | |
129 | multiple_symbols_cancel, | |
130 | NULL | |
131 | }; | |
132 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
133 | ||
134 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
135 | ||
136 | const char * | |
137 | multiple_symbols_select_mode (void) | |
138 | { | |
139 | return multiple_symbols_mode; | |
140 | } | |
141 | ||
c906108c | 142 | /* Block in which the most recently searched-for symbol was found. |
9af17804 | 143 | Might be better to make this a parameter to lookup_symbol and |
c378eb4e | 144 | value_of_this. */ |
c906108c SS |
145 | |
146 | const struct block *block_found; | |
147 | ||
f8eba3c6 TT |
148 | /* Check for a symtab of a specific name by searching some symtabs. |
149 | This is a helper function for callbacks of iterate_over_symtabs. | |
c906108c | 150 | |
f8eba3c6 TT |
151 | The return value, NAME, FULL_PATH, REAL_PATH, CALLBACK, and DATA |
152 | are identical to the `map_symtabs_matching_filename' method of | |
153 | quick_symbol_functions. | |
154 | ||
155 | FIRST and AFTER_LAST indicate the range of symtabs to search. | |
156 | AFTER_LAST is one past the last symtab to search; NULL means to | |
157 | search until the end of the list. */ | |
158 | ||
159 | int | |
160 | iterate_over_some_symtabs (const char *name, | |
161 | const char *full_path, | |
162 | const char *real_path, | |
163 | int (*callback) (struct symtab *symtab, | |
164 | void *data), | |
165 | void *data, | |
166 | struct symtab *first, | |
167 | struct symtab *after_last) | |
c906108c | 168 | { |
ccefe4c4 | 169 | struct symtab *s = NULL; |
1f84b619 | 170 | struct cleanup *cleanup; |
c011a4f4 | 171 | const char* base_name = lbasename (name); |
1f84b619 | 172 | |
f8eba3c6 | 173 | for (s = first; s != NULL && s != after_last; s = s->next) |
f079a2e5 | 174 | { |
f8eba3c6 TT |
175 | if (FILENAME_CMP (name, s->filename) == 0) |
176 | { | |
177 | if (callback (s, data)) | |
178 | return 1; | |
179 | } | |
9af17804 | 180 | |
c011a4f4 DE |
181 | /* Before we invoke realpath, which can get expensive when many |
182 | files are involved, do a quick comparison of the basenames. */ | |
183 | if (! basenames_may_differ | |
184 | && FILENAME_CMP (base_name, lbasename (s->filename)) != 0) | |
185 | continue; | |
186 | ||
58d370e0 TT |
187 | /* If the user gave us an absolute path, try to find the file in |
188 | this symtab and use its absolute path. */ | |
9af17804 | 189 | |
f079a2e5 JB |
190 | if (full_path != NULL) |
191 | { | |
09bcec80 | 192 | const char *fp = symtab_to_fullname (s); |
433759f7 | 193 | |
09bcec80 BR |
194 | if (fp != NULL && FILENAME_CMP (full_path, fp) == 0) |
195 | { | |
f8eba3c6 TT |
196 | if (callback (s, data)) |
197 | return 1; | |
09bcec80 | 198 | } |
f079a2e5 JB |
199 | } |
200 | ||
58d370e0 TT |
201 | if (real_path != NULL) |
202 | { | |
09bcec80 | 203 | char *fullname = symtab_to_fullname (s); |
433759f7 | 204 | |
09bcec80 BR |
205 | if (fullname != NULL) |
206 | { | |
207 | char *rp = gdb_realpath (fullname); | |
433759f7 | 208 | |
09bcec80 BR |
209 | make_cleanup (xfree, rp); |
210 | if (FILENAME_CMP (real_path, rp) == 0) | |
f8eba3c6 TT |
211 | { |
212 | if (callback (s, data)) | |
213 | return 1; | |
214 | } | |
09bcec80 | 215 | } |
58d370e0 | 216 | } |
f8eba3c6 | 217 | } |
58d370e0 | 218 | |
c378eb4e | 219 | /* Now, search for a matching tail (only if name doesn't have any dirs). */ |
c906108c | 220 | |
caadab2c | 221 | if (lbasename (name) == name) |
c5aa993b | 222 | { |
f8eba3c6 | 223 | for (s = first; s != NULL && s != after_last; s = s->next) |
1f84b619 | 224 | { |
f8eba3c6 TT |
225 | if (FILENAME_CMP (lbasename (s->filename), name) == 0) |
226 | { | |
227 | if (callback (s, data)) | |
228 | return 1; | |
229 | } | |
1f84b619 | 230 | } |
c5aa993b | 231 | } |
c906108c | 232 | |
f8eba3c6 TT |
233 | return 0; |
234 | } | |
235 | ||
236 | /* Check for a symtab of a specific name; first in symtabs, then in | |
237 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
238 | in the symtab filename will also work. | |
239 | ||
240 | Calls CALLBACK with each symtab that is found and with the supplied | |
241 | DATA. If CALLBACK returns true, the search stops. */ | |
242 | ||
243 | void | |
244 | iterate_over_symtabs (const char *name, | |
245 | int (*callback) (struct symtab *symtab, | |
246 | void *data), | |
247 | void *data) | |
248 | { | |
249 | struct symtab *s = NULL; | |
250 | struct objfile *objfile; | |
251 | char *real_path = NULL; | |
252 | char *full_path = NULL; | |
253 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
254 | ||
255 | /* Here we are interested in canonicalizing an absolute path, not | |
256 | absolutizing a relative path. */ | |
257 | if (IS_ABSOLUTE_PATH (name)) | |
258 | { | |
259 | full_path = xfullpath (name); | |
260 | make_cleanup (xfree, full_path); | |
261 | real_path = gdb_realpath (name); | |
262 | make_cleanup (xfree, real_path); | |
263 | } | |
264 | ||
265 | ALL_OBJFILES (objfile) | |
266 | { | |
267 | if (iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
268 | objfile->symtabs, NULL)) | |
269 | { | |
270 | do_cleanups (cleanups); | |
271 | return; | |
272 | } | |
273 | } | |
274 | ||
c906108c SS |
275 | /* Same search rules as above apply here, but now we look thru the |
276 | psymtabs. */ | |
277 | ||
ccefe4c4 TT |
278 | ALL_OBJFILES (objfile) |
279 | { | |
280 | if (objfile->sf | |
f8eba3c6 TT |
281 | && objfile->sf->qf->map_symtabs_matching_filename (objfile, |
282 | name, | |
283 | full_path, | |
284 | real_path, | |
285 | callback, | |
286 | data)) | |
ccefe4c4 | 287 | { |
f8eba3c6 TT |
288 | do_cleanups (cleanups); |
289 | return; | |
ccefe4c4 TT |
290 | } |
291 | } | |
c906108c | 292 | |
f8eba3c6 TT |
293 | do_cleanups (cleanups); |
294 | } | |
295 | ||
296 | /* The callback function used by lookup_symtab. */ | |
297 | ||
298 | static int | |
299 | lookup_symtab_callback (struct symtab *symtab, void *data) | |
300 | { | |
301 | struct symtab **result_ptr = data; | |
c906108c | 302 | |
f8eba3c6 TT |
303 | *result_ptr = symtab; |
304 | return 1; | |
c906108c | 305 | } |
f8eba3c6 TT |
306 | |
307 | /* A wrapper for iterate_over_symtabs that returns the first matching | |
308 | symtab, or NULL. */ | |
309 | ||
310 | struct symtab * | |
311 | lookup_symtab (const char *name) | |
312 | { | |
313 | struct symtab *result = NULL; | |
314 | ||
315 | iterate_over_symtabs (name, lookup_symtab_callback, &result); | |
316 | return result; | |
317 | } | |
318 | ||
c906108c SS |
319 | \f |
320 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
321 | full method name, which consist of the class name (from T), the unadorned | |
322 | method name from METHOD_ID, and the signature for the specific overload, | |
c378eb4e | 323 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
c906108c SS |
324 | |
325 | char * | |
fba45db2 | 326 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
327 | { |
328 | int mangled_name_len; | |
329 | char *mangled_name; | |
330 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
331 | struct fn_field *method = &f[signature_id]; | |
332 | char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); | |
1d06ead6 | 333 | const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
c906108c SS |
334 | char *newname = type_name_no_tag (type); |
335 | ||
336 | /* Does the form of physname indicate that it is the full mangled name | |
337 | of a constructor (not just the args)? */ | |
338 | int is_full_physname_constructor; | |
339 | ||
340 | int is_constructor; | |
015a42b4 | 341 | int is_destructor = is_destructor_name (physname); |
c906108c SS |
342 | /* Need a new type prefix. */ |
343 | char *const_prefix = method->is_const ? "C" : ""; | |
344 | char *volatile_prefix = method->is_volatile ? "V" : ""; | |
345 | char buf[20]; | |
346 | int len = (newname == NULL ? 0 : strlen (newname)); | |
347 | ||
43630227 PS |
348 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
349 | or an operator name. */ | |
350 | if ((physname[0] == '_' && physname[1] == 'Z') | |
351 | || is_operator_name (field_name)) | |
235d1e03 EZ |
352 | return xstrdup (physname); |
353 | ||
015a42b4 | 354 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c | 355 | |
3e43a32a MS |
356 | is_constructor = is_full_physname_constructor |
357 | || (newname && strcmp (field_name, newname) == 0); | |
c906108c SS |
358 | |
359 | if (!is_destructor) | |
c5aa993b | 360 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
c906108c SS |
361 | |
362 | if (is_destructor || is_full_physname_constructor) | |
363 | { | |
c5aa993b JM |
364 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
365 | strcpy (mangled_name, physname); | |
c906108c SS |
366 | return mangled_name; |
367 | } | |
368 | ||
369 | if (len == 0) | |
370 | { | |
371 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); | |
372 | } | |
373 | else if (physname[0] == 't' || physname[0] == 'Q') | |
374 | { | |
375 | /* The physname for template and qualified methods already includes | |
c5aa993b | 376 | the class name. */ |
c906108c SS |
377 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
378 | newname = NULL; | |
379 | len = 0; | |
380 | } | |
381 | else | |
382 | { | |
383 | sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); | |
384 | } | |
385 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 386 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 387 | |
433759f7 MS |
388 | mangled_name = (char *) xmalloc (mangled_name_len); |
389 | if (is_constructor) | |
390 | mangled_name[0] = '\0'; | |
391 | else | |
392 | strcpy (mangled_name, field_name); | |
393 | ||
c906108c SS |
394 | strcat (mangled_name, buf); |
395 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
396 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c378eb4e | 397 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
398 | if (newname != NULL) |
399 | strcat (mangled_name, newname); | |
400 | ||
401 | strcat (mangled_name, physname); | |
402 | return (mangled_name); | |
403 | } | |
12af6855 | 404 | |
29df156d SW |
405 | /* Initialize the cplus_specific structure. 'cplus_specific' should |
406 | only be allocated for use with cplus symbols. */ | |
407 | ||
408 | static void | |
409 | symbol_init_cplus_specific (struct general_symbol_info *gsymbol, | |
410 | struct objfile *objfile) | |
411 | { | |
412 | /* A language_specific structure should not have been previously | |
413 | initialized. */ | |
414 | gdb_assert (gsymbol->language_specific.cplus_specific == NULL); | |
415 | gdb_assert (objfile != NULL); | |
416 | ||
417 | gsymbol->language_specific.cplus_specific = | |
418 | OBSTACK_ZALLOC (&objfile->objfile_obstack, struct cplus_specific); | |
419 | } | |
420 | ||
b250c185 | 421 | /* Set the demangled name of GSYMBOL to NAME. NAME must be already |
29df156d | 422 | correctly allocated. For C++ symbols a cplus_specific struct is |
c378eb4e | 423 | allocated so OBJFILE must not be NULL. If this is a non C++ symbol |
29df156d | 424 | OBJFILE can be NULL. */ |
b250c185 SW |
425 | void |
426 | symbol_set_demangled_name (struct general_symbol_info *gsymbol, | |
29df156d SW |
427 | char *name, |
428 | struct objfile *objfile) | |
b250c185 | 429 | { |
29df156d SW |
430 | if (gsymbol->language == language_cplus) |
431 | { | |
432 | if (gsymbol->language_specific.cplus_specific == NULL) | |
433 | symbol_init_cplus_specific (gsymbol, objfile); | |
434 | ||
435 | gsymbol->language_specific.cplus_specific->demangled_name = name; | |
436 | } | |
437 | else | |
438 | gsymbol->language_specific.mangled_lang.demangled_name = name; | |
b250c185 SW |
439 | } |
440 | ||
441 | /* Return the demangled name of GSYMBOL. */ | |
442 | char * | |
443 | symbol_get_demangled_name (const struct general_symbol_info *gsymbol) | |
444 | { | |
29df156d SW |
445 | if (gsymbol->language == language_cplus) |
446 | { | |
45c58896 SW |
447 | if (gsymbol->language_specific.cplus_specific != NULL) |
448 | return gsymbol->language_specific.cplus_specific->demangled_name; | |
449 | else | |
450 | return NULL; | |
29df156d SW |
451 | } |
452 | else | |
453 | return gsymbol->language_specific.mangled_lang.demangled_name; | |
b250c185 SW |
454 | } |
455 | ||
12af6855 | 456 | \f |
89aad1f9 | 457 | /* Initialize the language dependent portion of a symbol |
c378eb4e | 458 | depending upon the language for the symbol. */ |
89aad1f9 | 459 | void |
33e5013e SW |
460 | symbol_set_language (struct general_symbol_info *gsymbol, |
461 | enum language language) | |
89aad1f9 EZ |
462 | { |
463 | gsymbol->language = language; | |
33e5013e | 464 | if (gsymbol->language == language_d |
5784d15e | 465 | || gsymbol->language == language_java |
f55ee35c JK |
466 | || gsymbol->language == language_objc |
467 | || gsymbol->language == language_fortran) | |
89aad1f9 | 468 | { |
29df156d | 469 | symbol_set_demangled_name (gsymbol, NULL, NULL); |
89aad1f9 | 470 | } |
29df156d SW |
471 | else if (gsymbol->language == language_cplus) |
472 | gsymbol->language_specific.cplus_specific = NULL; | |
89aad1f9 EZ |
473 | else |
474 | { | |
475 | memset (&gsymbol->language_specific, 0, | |
476 | sizeof (gsymbol->language_specific)); | |
477 | } | |
478 | } | |
479 | ||
2de7ced7 DJ |
480 | /* Functions to initialize a symbol's mangled name. */ |
481 | ||
04a679b8 TT |
482 | /* Objects of this type are stored in the demangled name hash table. */ |
483 | struct demangled_name_entry | |
484 | { | |
485 | char *mangled; | |
486 | char demangled[1]; | |
487 | }; | |
488 | ||
489 | /* Hash function for the demangled name hash. */ | |
490 | static hashval_t | |
491 | hash_demangled_name_entry (const void *data) | |
492 | { | |
493 | const struct demangled_name_entry *e = data; | |
433759f7 | 494 | |
04a679b8 TT |
495 | return htab_hash_string (e->mangled); |
496 | } | |
497 | ||
498 | /* Equality function for the demangled name hash. */ | |
499 | static int | |
500 | eq_demangled_name_entry (const void *a, const void *b) | |
501 | { | |
502 | const struct demangled_name_entry *da = a; | |
503 | const struct demangled_name_entry *db = b; | |
433759f7 | 504 | |
04a679b8 TT |
505 | return strcmp (da->mangled, db->mangled) == 0; |
506 | } | |
507 | ||
2de7ced7 DJ |
508 | /* Create the hash table used for demangled names. Each hash entry is |
509 | a pair of strings; one for the mangled name and one for the demangled | |
510 | name. The entry is hashed via just the mangled name. */ | |
511 | ||
512 | static void | |
513 | create_demangled_names_hash (struct objfile *objfile) | |
514 | { | |
515 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 516 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
517 | Choosing a much larger table size wastes memory, and saves only about |
518 | 1% in symbol reading. */ | |
519 | ||
aa2ee5f6 | 520 | objfile->demangled_names_hash = htab_create_alloc |
04a679b8 | 521 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 522 | NULL, xcalloc, xfree); |
2de7ced7 | 523 | } |
12af6855 | 524 | |
2de7ced7 | 525 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
526 | language of that symbol. If the language is set to language_auto, |
527 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
528 | then set the language appropriately. The returned name is allocated |
529 | by the demangler and should be xfree'd. */ | |
12af6855 | 530 | |
2de7ced7 DJ |
531 | static char * |
532 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
533 | const char *mangled) | |
12af6855 | 534 | { |
12af6855 JB |
535 | char *demangled = NULL; |
536 | ||
537 | if (gsymbol->language == language_unknown) | |
538 | gsymbol->language = language_auto; | |
1bae87b9 AF |
539 | |
540 | if (gsymbol->language == language_objc | |
541 | || gsymbol->language == language_auto) | |
542 | { | |
543 | demangled = | |
544 | objc_demangle (mangled, 0); | |
545 | if (demangled != NULL) | |
546 | { | |
547 | gsymbol->language = language_objc; | |
548 | return demangled; | |
549 | } | |
550 | } | |
12af6855 JB |
551 | if (gsymbol->language == language_cplus |
552 | || gsymbol->language == language_auto) | |
553 | { | |
554 | demangled = | |
3f542ed1 | 555 | cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); |
12af6855 | 556 | if (demangled != NULL) |
2de7ced7 DJ |
557 | { |
558 | gsymbol->language = language_cplus; | |
559 | return demangled; | |
560 | } | |
12af6855 JB |
561 | } |
562 | if (gsymbol->language == language_java) | |
563 | { | |
564 | demangled = | |
2de7ced7 | 565 | cplus_demangle (mangled, |
12af6855 JB |
566 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); |
567 | if (demangled != NULL) | |
2de7ced7 DJ |
568 | { |
569 | gsymbol->language = language_java; | |
570 | return demangled; | |
571 | } | |
572 | } | |
6aecb9c2 JB |
573 | if (gsymbol->language == language_d |
574 | || gsymbol->language == language_auto) | |
575 | { | |
576 | demangled = d_demangle(mangled, 0); | |
577 | if (demangled != NULL) | |
578 | { | |
579 | gsymbol->language = language_d; | |
580 | return demangled; | |
581 | } | |
582 | } | |
f55ee35c JK |
583 | /* We could support `gsymbol->language == language_fortran' here to provide |
584 | module namespaces also for inferiors with only minimal symbol table (ELF | |
585 | symbols). Just the mangling standard is not standardized across compilers | |
586 | and there is no DW_AT_producer available for inferiors with only the ELF | |
587 | symbols to check the mangling kind. */ | |
2de7ced7 DJ |
588 | return NULL; |
589 | } | |
590 | ||
980cae7a | 591 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
592 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
593 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
594 | NUL-terminated, then this function assumes that NAME is already | |
595 | correctly saved (either permanently or with a lifetime tied to the | |
596 | objfile), and it will not be copied. | |
597 | ||
598 | The hash table corresponding to OBJFILE is used, and the memory | |
599 | comes from that objfile's objfile_obstack. LINKAGE_NAME is copied, | |
600 | so the pointer can be discarded after calling this function. */ | |
2de7ced7 | 601 | |
d2a52b27 DC |
602 | /* We have to be careful when dealing with Java names: when we run |
603 | into a Java minimal symbol, we don't know it's a Java symbol, so it | |
604 | gets demangled as a C++ name. This is unfortunate, but there's not | |
605 | much we can do about it: but when demangling partial symbols and | |
606 | regular symbols, we'd better not reuse the wrong demangled name. | |
607 | (See PR gdb/1039.) We solve this by putting a distinctive prefix | |
608 | on Java names when storing them in the hash table. */ | |
609 | ||
610 | /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I | |
611 | don't mind the Java prefix so much: different languages have | |
612 | different demangling requirements, so it's only natural that we | |
613 | need to keep language data around in our demangling cache. But | |
614 | it's not good that the minimal symbol has the wrong demangled name. | |
615 | Unfortunately, I can't think of any easy solution to that | |
616 | problem. */ | |
617 | ||
618 | #define JAVA_PREFIX "##JAVA$$" | |
619 | #define JAVA_PREFIX_LEN 8 | |
620 | ||
2de7ced7 DJ |
621 | void |
622 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
623 | const char *linkage_name, int len, int copy_name, |
624 | struct objfile *objfile) | |
2de7ced7 | 625 | { |
04a679b8 | 626 | struct demangled_name_entry **slot; |
980cae7a DC |
627 | /* A 0-terminated copy of the linkage name. */ |
628 | const char *linkage_name_copy; | |
d2a52b27 DC |
629 | /* A copy of the linkage name that might have a special Java prefix |
630 | added to it, for use when looking names up in the hash table. */ | |
631 | const char *lookup_name; | |
632 | /* The length of lookup_name. */ | |
633 | int lookup_len; | |
04a679b8 | 634 | struct demangled_name_entry entry; |
2de7ced7 | 635 | |
b06ead72 JB |
636 | if (gsymbol->language == language_ada) |
637 | { | |
638 | /* In Ada, we do the symbol lookups using the mangled name, so | |
639 | we can save some space by not storing the demangled name. | |
640 | ||
641 | As a side note, we have also observed some overlap between | |
642 | the C++ mangling and Ada mangling, similarly to what has | |
643 | been observed with Java. Because we don't store the demangled | |
644 | name with the symbol, we don't need to use the same trick | |
645 | as Java. */ | |
04a679b8 TT |
646 | if (!copy_name) |
647 | gsymbol->name = (char *) linkage_name; | |
648 | else | |
649 | { | |
650 | gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1); | |
651 | memcpy (gsymbol->name, linkage_name, len); | |
652 | gsymbol->name[len] = '\0'; | |
653 | } | |
29df156d | 654 | symbol_set_demangled_name (gsymbol, NULL, NULL); |
b06ead72 JB |
655 | |
656 | return; | |
657 | } | |
658 | ||
04a679b8 TT |
659 | if (objfile->demangled_names_hash == NULL) |
660 | create_demangled_names_hash (objfile); | |
661 | ||
980cae7a DC |
662 | /* The stabs reader generally provides names that are not |
663 | NUL-terminated; most of the other readers don't do this, so we | |
d2a52b27 DC |
664 | can just use the given copy, unless we're in the Java case. */ |
665 | if (gsymbol->language == language_java) | |
666 | { | |
667 | char *alloc_name; | |
d2a52b27 | 668 | |
433759f7 | 669 | lookup_len = len + JAVA_PREFIX_LEN; |
d2a52b27 DC |
670 | alloc_name = alloca (lookup_len + 1); |
671 | memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN); | |
672 | memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len); | |
673 | alloc_name[lookup_len] = '\0'; | |
674 | ||
675 | lookup_name = alloc_name; | |
676 | linkage_name_copy = alloc_name + JAVA_PREFIX_LEN; | |
677 | } | |
678 | else if (linkage_name[len] != '\0') | |
2de7ced7 | 679 | { |
980cae7a DC |
680 | char *alloc_name; |
681 | ||
433759f7 | 682 | lookup_len = len; |
d2a52b27 | 683 | alloc_name = alloca (lookup_len + 1); |
980cae7a | 684 | memcpy (alloc_name, linkage_name, len); |
d2a52b27 | 685 | alloc_name[lookup_len] = '\0'; |
980cae7a | 686 | |
d2a52b27 | 687 | lookup_name = alloc_name; |
980cae7a | 688 | linkage_name_copy = alloc_name; |
2de7ced7 DJ |
689 | } |
690 | else | |
980cae7a | 691 | { |
d2a52b27 DC |
692 | lookup_len = len; |
693 | lookup_name = linkage_name; | |
980cae7a DC |
694 | linkage_name_copy = linkage_name; |
695 | } | |
2de7ced7 | 696 | |
04a679b8 TT |
697 | entry.mangled = (char *) lookup_name; |
698 | slot = ((struct demangled_name_entry **) | |
699 | htab_find_slot (objfile->demangled_names_hash, | |
700 | &entry, INSERT)); | |
2de7ced7 DJ |
701 | |
702 | /* If this name is not in the hash table, add it. */ | |
703 | if (*slot == NULL) | |
704 | { | |
980cae7a DC |
705 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
706 | linkage_name_copy); | |
2de7ced7 DJ |
707 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
708 | ||
04a679b8 TT |
709 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
710 | lookup_name==linkage_name. In this case, we already have the | |
711 | mangled name saved, and we don't have a demangled name. So, | |
712 | you might think we could save a little space by not recording | |
713 | this in the hash table at all. | |
714 | ||
715 | It turns out that it is actually important to still save such | |
716 | an entry in the hash table, because storing this name gives | |
705b5767 | 717 | us better bcache hit rates for partial symbols. */ |
04a679b8 TT |
718 | if (!copy_name && lookup_name == linkage_name) |
719 | { | |
720 | *slot = obstack_alloc (&objfile->objfile_obstack, | |
721 | offsetof (struct demangled_name_entry, | |
722 | demangled) | |
723 | + demangled_len + 1); | |
724 | (*slot)->mangled = (char *) lookup_name; | |
725 | } | |
726 | else | |
727 | { | |
728 | /* If we must copy the mangled name, put it directly after | |
729 | the demangled name so we can have a single | |
730 | allocation. */ | |
731 | *slot = obstack_alloc (&objfile->objfile_obstack, | |
732 | offsetof (struct demangled_name_entry, | |
733 | demangled) | |
734 | + lookup_len + demangled_len + 2); | |
735 | (*slot)->mangled = &((*slot)->demangled[demangled_len + 1]); | |
736 | strcpy ((*slot)->mangled, lookup_name); | |
737 | } | |
738 | ||
980cae7a | 739 | if (demangled_name != NULL) |
2de7ced7 | 740 | { |
04a679b8 | 741 | strcpy ((*slot)->demangled, demangled_name); |
2de7ced7 DJ |
742 | xfree (demangled_name); |
743 | } | |
744 | else | |
04a679b8 | 745 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
746 | } |
747 | ||
72dcaf82 | 748 | gsymbol->name = (*slot)->mangled + lookup_len - len; |
04a679b8 | 749 | if ((*slot)->demangled[0] != '\0') |
29df156d | 750 | symbol_set_demangled_name (gsymbol, (*slot)->demangled, objfile); |
2de7ced7 | 751 | else |
29df156d | 752 | symbol_set_demangled_name (gsymbol, NULL, objfile); |
2de7ced7 DJ |
753 | } |
754 | ||
22abf04a DC |
755 | /* Return the source code name of a symbol. In languages where |
756 | demangling is necessary, this is the demangled name. */ | |
757 | ||
758 | char * | |
759 | symbol_natural_name (const struct general_symbol_info *gsymbol) | |
760 | { | |
9af17804 | 761 | switch (gsymbol->language) |
22abf04a | 762 | { |
1f8173e6 | 763 | case language_cplus: |
6aecb9c2 | 764 | case language_d: |
1f8173e6 PH |
765 | case language_java: |
766 | case language_objc: | |
f55ee35c | 767 | case language_fortran: |
b250c185 SW |
768 | if (symbol_get_demangled_name (gsymbol) != NULL) |
769 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
770 | break; |
771 | case language_ada: | |
b250c185 SW |
772 | if (symbol_get_demangled_name (gsymbol) != NULL) |
773 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
774 | else |
775 | return ada_decode_symbol (gsymbol); | |
776 | break; | |
777 | default: | |
778 | break; | |
22abf04a | 779 | } |
1f8173e6 | 780 | return gsymbol->name; |
22abf04a DC |
781 | } |
782 | ||
9cc0d196 | 783 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 784 | that symbol. If no demangled name exists, return NULL. */ |
9cc0d196 | 785 | char * |
df8a16a1 | 786 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 787 | { |
9af17804 | 788 | switch (gsymbol->language) |
1f8173e6 PH |
789 | { |
790 | case language_cplus: | |
6aecb9c2 | 791 | case language_d: |
1f8173e6 PH |
792 | case language_java: |
793 | case language_objc: | |
f55ee35c | 794 | case language_fortran: |
b250c185 SW |
795 | if (symbol_get_demangled_name (gsymbol) != NULL) |
796 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
797 | break; |
798 | case language_ada: | |
b250c185 SW |
799 | if (symbol_get_demangled_name (gsymbol) != NULL) |
800 | return symbol_get_demangled_name (gsymbol); | |
1f8173e6 PH |
801 | else |
802 | return ada_decode_symbol (gsymbol); | |
803 | break; | |
804 | default: | |
805 | break; | |
806 | } | |
807 | return NULL; | |
9cc0d196 | 808 | } |
fe39c653 | 809 | |
4725b721 PH |
810 | /* Return the search name of a symbol---generally the demangled or |
811 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 812 | If there is no distinct demangled name, then returns the same value |
c378eb4e | 813 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
fc062ac6 JB |
814 | char * |
815 | symbol_search_name (const struct general_symbol_info *gsymbol) | |
816 | { | |
1f8173e6 PH |
817 | if (gsymbol->language == language_ada) |
818 | return gsymbol->name; | |
819 | else | |
820 | return symbol_natural_name (gsymbol); | |
4725b721 PH |
821 | } |
822 | ||
fe39c653 EZ |
823 | /* Initialize the structure fields to zero values. */ |
824 | void | |
825 | init_sal (struct symtab_and_line *sal) | |
826 | { | |
6c95b8df | 827 | sal->pspace = NULL; |
fe39c653 EZ |
828 | sal->symtab = 0; |
829 | sal->section = 0; | |
830 | sal->line = 0; | |
831 | sal->pc = 0; | |
832 | sal->end = 0; | |
ed0616c6 VP |
833 | sal->explicit_pc = 0; |
834 | sal->explicit_line = 0; | |
fe39c653 | 835 | } |
c906108c SS |
836 | \f |
837 | ||
94277a38 DJ |
838 | /* Return 1 if the two sections are the same, or if they could |
839 | plausibly be copies of each other, one in an original object | |
840 | file and another in a separated debug file. */ | |
841 | ||
842 | int | |
714835d5 UW |
843 | matching_obj_sections (struct obj_section *obj_first, |
844 | struct obj_section *obj_second) | |
94277a38 | 845 | { |
714835d5 UW |
846 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
847 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
848 | struct objfile *obj; |
849 | ||
850 | /* If they're the same section, then they match. */ | |
851 | if (first == second) | |
852 | return 1; | |
853 | ||
854 | /* If either is NULL, give up. */ | |
855 | if (first == NULL || second == NULL) | |
856 | return 0; | |
857 | ||
858 | /* This doesn't apply to absolute symbols. */ | |
859 | if (first->owner == NULL || second->owner == NULL) | |
860 | return 0; | |
861 | ||
862 | /* If they're in the same object file, they must be different sections. */ | |
863 | if (first->owner == second->owner) | |
864 | return 0; | |
865 | ||
866 | /* Check whether the two sections are potentially corresponding. They must | |
867 | have the same size, address, and name. We can't compare section indexes, | |
868 | which would be more reliable, because some sections may have been | |
869 | stripped. */ | |
870 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
871 | return 0; | |
872 | ||
818f79f6 | 873 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 874 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
875 | - bfd_get_start_address (first->owner) |
876 | != bfd_get_section_vma (second->owner, second) | |
877 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
878 | return 0; |
879 | ||
880 | if (bfd_get_section_name (first->owner, first) == NULL | |
881 | || bfd_get_section_name (second->owner, second) == NULL | |
882 | || strcmp (bfd_get_section_name (first->owner, first), | |
883 | bfd_get_section_name (second->owner, second)) != 0) | |
884 | return 0; | |
885 | ||
886 | /* Otherwise check that they are in corresponding objfiles. */ | |
887 | ||
888 | ALL_OBJFILES (obj) | |
889 | if (obj->obfd == first->owner) | |
890 | break; | |
891 | gdb_assert (obj != NULL); | |
892 | ||
893 | if (obj->separate_debug_objfile != NULL | |
894 | && obj->separate_debug_objfile->obfd == second->owner) | |
895 | return 1; | |
896 | if (obj->separate_debug_objfile_backlink != NULL | |
897 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
898 | return 1; | |
899 | ||
900 | return 0; | |
901 | } | |
c5aa993b | 902 | |
ccefe4c4 TT |
903 | struct symtab * |
904 | find_pc_sect_symtab_via_partial (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 905 | { |
52f0bd74 | 906 | struct objfile *objfile; |
8a48e967 DJ |
907 | struct minimal_symbol *msymbol; |
908 | ||
909 | /* If we know that this is not a text address, return failure. This is | |
910 | necessary because we loop based on texthigh and textlow, which do | |
911 | not include the data ranges. */ | |
912 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
913 | if (msymbol | |
712f90be TT |
914 | && (MSYMBOL_TYPE (msymbol) == mst_data |
915 | || MSYMBOL_TYPE (msymbol) == mst_bss | |
916 | || MSYMBOL_TYPE (msymbol) == mst_abs | |
917 | || MSYMBOL_TYPE (msymbol) == mst_file_data | |
918 | || MSYMBOL_TYPE (msymbol) == mst_file_bss)) | |
8a48e967 | 919 | return NULL; |
c906108c | 920 | |
ff013f42 | 921 | ALL_OBJFILES (objfile) |
ccefe4c4 TT |
922 | { |
923 | struct symtab *result = NULL; | |
433759f7 | 924 | |
ccefe4c4 TT |
925 | if (objfile->sf) |
926 | result = objfile->sf->qf->find_pc_sect_symtab (objfile, msymbol, | |
927 | pc, section, 0); | |
928 | if (result) | |
929 | return result; | |
930 | } | |
ff013f42 JK |
931 | |
932 | return NULL; | |
c906108c | 933 | } |
c906108c SS |
934 | \f |
935 | /* Debug symbols usually don't have section information. We need to dig that | |
936 | out of the minimal symbols and stash that in the debug symbol. */ | |
937 | ||
ccefe4c4 | 938 | void |
907fc202 UW |
939 | fixup_section (struct general_symbol_info *ginfo, |
940 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
941 | { |
942 | struct minimal_symbol *msym; | |
c906108c | 943 | |
bccdca4a UW |
944 | /* First, check whether a minimal symbol with the same name exists |
945 | and points to the same address. The address check is required | |
946 | e.g. on PowerPC64, where the minimal symbol for a function will | |
947 | point to the function descriptor, while the debug symbol will | |
948 | point to the actual function code. */ | |
907fc202 UW |
949 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
950 | if (msym) | |
7a78d0ee | 951 | { |
714835d5 | 952 | ginfo->obj_section = SYMBOL_OBJ_SECTION (msym); |
7a78d0ee KB |
953 | ginfo->section = SYMBOL_SECTION (msym); |
954 | } | |
907fc202 | 955 | else |
19e2d14b KB |
956 | { |
957 | /* Static, function-local variables do appear in the linker | |
958 | (minimal) symbols, but are frequently given names that won't | |
959 | be found via lookup_minimal_symbol(). E.g., it has been | |
960 | observed in frv-uclinux (ELF) executables that a static, | |
961 | function-local variable named "foo" might appear in the | |
962 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
963 | point in attempting to extend the lookup-by-name mechanism to | |
964 | handle this case due to the fact that there can be multiple | |
965 | names. | |
9af17804 | 966 | |
19e2d14b KB |
967 | So, instead, search the section table when lookup by name has |
968 | failed. The ``addr'' and ``endaddr'' fields may have already | |
969 | been relocated. If so, the relocation offset (i.e. the | |
970 | ANOFFSET value) needs to be subtracted from these values when | |
971 | performing the comparison. We unconditionally subtract it, | |
972 | because, when no relocation has been performed, the ANOFFSET | |
973 | value will simply be zero. | |
9af17804 | 974 | |
19e2d14b KB |
975 | The address of the symbol whose section we're fixing up HAS |
976 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
977 | the section isn't yet known and knowing the section is | |
978 | necessary in order to add the correct relocation value. In | |
979 | other words, we wouldn't even be in this function (attempting | |
980 | to compute the section) if it were already known. | |
981 | ||
982 | Note that it is possible to search the minimal symbols | |
983 | (subtracting the relocation value if necessary) to find the | |
984 | matching minimal symbol, but this is overkill and much less | |
985 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
986 | symbol, only its section. |
987 | ||
19e2d14b KB |
988 | Note that this technique (of doing a section table search) |
989 | can fail when unrelocated section addresses overlap. For | |
990 | this reason, we still attempt a lookup by name prior to doing | |
991 | a search of the section table. */ | |
9af17804 | 992 | |
19e2d14b | 993 | struct obj_section *s; |
433759f7 | 994 | |
19e2d14b KB |
995 | ALL_OBJFILE_OSECTIONS (objfile, s) |
996 | { | |
997 | int idx = s->the_bfd_section->index; | |
998 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); | |
999 | ||
f1f6aadf PA |
1000 | if (obj_section_addr (s) - offset <= addr |
1001 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1002 | { |
714835d5 | 1003 | ginfo->obj_section = s; |
19e2d14b KB |
1004 | ginfo->section = idx; |
1005 | return; | |
1006 | } | |
1007 | } | |
1008 | } | |
c906108c SS |
1009 | } |
1010 | ||
1011 | struct symbol * | |
fba45db2 | 1012 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1013 | { |
907fc202 UW |
1014 | CORE_ADDR addr; |
1015 | ||
c906108c SS |
1016 | if (!sym) |
1017 | return NULL; | |
1018 | ||
714835d5 | 1019 | if (SYMBOL_OBJ_SECTION (sym)) |
c906108c SS |
1020 | return sym; |
1021 | ||
907fc202 UW |
1022 | /* We either have an OBJFILE, or we can get at it from the sym's |
1023 | symtab. Anything else is a bug. */ | |
1024 | gdb_assert (objfile || SYMBOL_SYMTAB (sym)); | |
1025 | ||
1026 | if (objfile == NULL) | |
1027 | objfile = SYMBOL_SYMTAB (sym)->objfile; | |
1028 | ||
1029 | /* We should have an objfile by now. */ | |
1030 | gdb_assert (objfile); | |
1031 | ||
1032 | switch (SYMBOL_CLASS (sym)) | |
1033 | { | |
1034 | case LOC_STATIC: | |
1035 | case LOC_LABEL: | |
907fc202 UW |
1036 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1037 | break; | |
1038 | case LOC_BLOCK: | |
1039 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1040 | break; | |
1041 | ||
1042 | default: | |
1043 | /* Nothing else will be listed in the minsyms -- no use looking | |
1044 | it up. */ | |
1045 | return sym; | |
1046 | } | |
1047 | ||
1048 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1049 | |
1050 | return sym; | |
1051 | } | |
1052 | ||
f8eba3c6 TT |
1053 | /* Compute the demangled form of NAME as used by the various symbol |
1054 | lookup functions. The result is stored in *RESULT_NAME. Returns a | |
1055 | cleanup which can be used to clean up the result. | |
1056 | ||
1057 | For Ada, this function just sets *RESULT_NAME to NAME, unmodified. | |
1058 | Normally, Ada symbol lookups are performed using the encoded name | |
1059 | rather than the demangled name, and so it might seem to make sense | |
1060 | for this function to return an encoded version of NAME. | |
1061 | Unfortunately, we cannot do this, because this function is used in | |
1062 | circumstances where it is not appropriate to try to encode NAME. | |
1063 | For instance, when displaying the frame info, we demangle the name | |
1064 | of each parameter, and then perform a symbol lookup inside our | |
1065 | function using that demangled name. In Ada, certain functions | |
1066 | have internally-generated parameters whose name contain uppercase | |
1067 | characters. Encoding those name would result in those uppercase | |
1068 | characters to become lowercase, and thus cause the symbol lookup | |
1069 | to fail. */ | |
c906108c | 1070 | |
f8eba3c6 TT |
1071 | struct cleanup * |
1072 | demangle_for_lookup (const char *name, enum language lang, | |
1073 | const char **result_name) | |
c906108c | 1074 | { |
729051e6 DJ |
1075 | char *demangled_name = NULL; |
1076 | const char *modified_name = NULL; | |
9ee6bb93 | 1077 | struct cleanup *cleanup = make_cleanup (null_cleanup, 0); |
c906108c | 1078 | |
729051e6 DJ |
1079 | modified_name = name; |
1080 | ||
433759f7 | 1081 | /* If we are using C++, D, or Java, demangle the name before doing a |
c378eb4e | 1082 | lookup, so we can always binary search. */ |
53c5240f | 1083 | if (lang == language_cplus) |
729051e6 DJ |
1084 | { |
1085 | demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS); | |
1086 | if (demangled_name) | |
1087 | { | |
729051e6 | 1088 | modified_name = demangled_name; |
9ee6bb93 | 1089 | make_cleanup (xfree, demangled_name); |
729051e6 | 1090 | } |
71c25dea TT |
1091 | else |
1092 | { | |
1093 | /* If we were given a non-mangled name, canonicalize it | |
1094 | according to the language (so far only for C++). */ | |
1095 | demangled_name = cp_canonicalize_string (name); | |
1096 | if (demangled_name) | |
1097 | { | |
1098 | modified_name = demangled_name; | |
1099 | make_cleanup (xfree, demangled_name); | |
1100 | } | |
1101 | } | |
729051e6 | 1102 | } |
53c5240f | 1103 | else if (lang == language_java) |
987504bb | 1104 | { |
9af17804 | 1105 | demangled_name = cplus_demangle (name, |
987504bb JJ |
1106 | DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA); |
1107 | if (demangled_name) | |
1108 | { | |
987504bb | 1109 | modified_name = demangled_name; |
9ee6bb93 | 1110 | make_cleanup (xfree, demangled_name); |
987504bb JJ |
1111 | } |
1112 | } | |
6aecb9c2 JB |
1113 | else if (lang == language_d) |
1114 | { | |
1115 | demangled_name = d_demangle (name, 0); | |
1116 | if (demangled_name) | |
1117 | { | |
1118 | modified_name = demangled_name; | |
1119 | make_cleanup (xfree, demangled_name); | |
1120 | } | |
1121 | } | |
729051e6 | 1122 | |
f8eba3c6 TT |
1123 | *result_name = modified_name; |
1124 | return cleanup; | |
1125 | } | |
1126 | ||
1127 | /* Find the definition for a specified symbol name NAME | |
1128 | in domain DOMAIN, visible from lexical block BLOCK. | |
1129 | Returns the struct symbol pointer, or zero if no symbol is found. | |
1130 | C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if | |
1131 | NAME is a field of the current implied argument `this'. If so set | |
1132 | *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. | |
1133 | BLOCK_FOUND is set to the block in which NAME is found (in the case of | |
1134 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ | |
1135 | ||
1136 | /* This function has a bunch of loops in it and it would seem to be | |
1137 | attractive to put in some QUIT's (though I'm not really sure | |
1138 | whether it can run long enough to be really important). But there | |
1139 | are a few calls for which it would appear to be bad news to quit | |
1140 | out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note | |
1141 | that there is C++ code below which can error(), but that probably | |
1142 | doesn't affect these calls since they are looking for a known | |
1143 | variable and thus can probably assume it will never hit the C++ | |
1144 | code). */ | |
1145 | ||
1146 | struct symbol * | |
1147 | lookup_symbol_in_language (const char *name, const struct block *block, | |
1148 | const domain_enum domain, enum language lang, | |
1149 | int *is_a_field_of_this) | |
1150 | { | |
1151 | const char *modified_name; | |
1152 | struct symbol *returnval; | |
1153 | struct cleanup *cleanup = demangle_for_lookup (name, lang, &modified_name); | |
1154 | ||
94af9270 | 1155 | returnval = lookup_symbol_aux (modified_name, block, domain, lang, |
774b6a14 | 1156 | is_a_field_of_this); |
9ee6bb93 | 1157 | do_cleanups (cleanup); |
fba7f19c | 1158 | |
9af17804 | 1159 | return returnval; |
fba7f19c EZ |
1160 | } |
1161 | ||
53c5240f PA |
1162 | /* Behave like lookup_symbol_in_language, but performed with the |
1163 | current language. */ | |
1164 | ||
1165 | struct symbol * | |
1166 | lookup_symbol (const char *name, const struct block *block, | |
2570f2b7 | 1167 | domain_enum domain, int *is_a_field_of_this) |
53c5240f PA |
1168 | { |
1169 | return lookup_symbol_in_language (name, block, domain, | |
1170 | current_language->la_language, | |
2570f2b7 | 1171 | is_a_field_of_this); |
53c5240f PA |
1172 | } |
1173 | ||
66a17cb6 TT |
1174 | /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if |
1175 | found, or NULL if not found. */ | |
1176 | ||
1177 | struct symbol * | |
1178 | lookup_language_this (const struct language_defn *lang, | |
1179 | const struct block *block) | |
1180 | { | |
1181 | if (lang->la_name_of_this == NULL || block == NULL) | |
1182 | return NULL; | |
1183 | ||
03de6823 | 1184 | while (block) |
66a17cb6 TT |
1185 | { |
1186 | struct symbol *sym; | |
1187 | ||
1188 | sym = lookup_block_symbol (block, lang->la_name_of_this, VAR_DOMAIN); | |
1189 | if (sym != NULL) | |
1190 | return sym; | |
1191 | if (BLOCK_FUNCTION (block)) | |
03de6823 | 1192 | break; |
66a17cb6 TT |
1193 | block = BLOCK_SUPERBLOCK (block); |
1194 | } | |
03de6823 TT |
1195 | |
1196 | return NULL; | |
66a17cb6 TT |
1197 | } |
1198 | ||
53c5240f | 1199 | /* Behave like lookup_symbol except that NAME is the natural name |
5ad1c190 DC |
1200 | of the symbol that we're looking for and, if LINKAGE_NAME is |
1201 | non-NULL, ensure that the symbol's linkage name matches as | |
1202 | well. */ | |
1203 | ||
fba7f19c | 1204 | static struct symbol * |
94af9270 KS |
1205 | lookup_symbol_aux (const char *name, const struct block *block, |
1206 | const domain_enum domain, enum language language, | |
774b6a14 | 1207 | int *is_a_field_of_this) |
fba7f19c | 1208 | { |
8155455b | 1209 | struct symbol *sym; |
53c5240f | 1210 | const struct language_defn *langdef; |
406bc4de | 1211 | |
9a146a11 EZ |
1212 | /* Make sure we do something sensible with is_a_field_of_this, since |
1213 | the callers that set this parameter to some non-null value will | |
1214 | certainly use it later and expect it to be either 0 or 1. | |
1215 | If we don't set it, the contents of is_a_field_of_this are | |
1216 | undefined. */ | |
1217 | if (is_a_field_of_this != NULL) | |
1218 | *is_a_field_of_this = 0; | |
1219 | ||
e4051eeb DC |
1220 | /* Search specified block and its superiors. Don't search |
1221 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1222 | |
13387711 | 1223 | sym = lookup_symbol_aux_local (name, block, domain, language); |
8155455b DC |
1224 | if (sym != NULL) |
1225 | return sym; | |
c906108c | 1226 | |
53c5240f | 1227 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 1228 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
1229 | |
1230 | langdef = language_def (language); | |
5f9a71c3 | 1231 | |
66a17cb6 | 1232 | if (is_a_field_of_this != NULL) |
c906108c | 1233 | { |
66a17cb6 | 1234 | struct symbol *sym = lookup_language_this (langdef, block); |
2b2d9e11 | 1235 | |
2b2d9e11 | 1236 | if (sym) |
c906108c | 1237 | { |
2b2d9e11 | 1238 | struct type *t = sym->type; |
9af17804 | 1239 | |
2b2d9e11 VP |
1240 | /* I'm not really sure that type of this can ever |
1241 | be typedefed; just be safe. */ | |
1242 | CHECK_TYPEDEF (t); | |
1243 | if (TYPE_CODE (t) == TYPE_CODE_PTR | |
1244 | || TYPE_CODE (t) == TYPE_CODE_REF) | |
1245 | t = TYPE_TARGET_TYPE (t); | |
9af17804 | 1246 | |
2b2d9e11 VP |
1247 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
1248 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 1249 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 1250 | langdef->la_name_of_this); |
9af17804 | 1251 | |
2b2d9e11 VP |
1252 | if (check_field (t, name)) |
1253 | { | |
1254 | *is_a_field_of_this = 1; | |
2b2d9e11 VP |
1255 | return NULL; |
1256 | } | |
c906108c SS |
1257 | } |
1258 | } | |
1259 | ||
53c5240f | 1260 | /* Now do whatever is appropriate for LANGUAGE to look |
774b6a14 | 1261 | up static and global variables. */ |
c906108c | 1262 | |
774b6a14 TT |
1263 | sym = langdef->la_lookup_symbol_nonlocal (name, block, domain); |
1264 | if (sym != NULL) | |
1265 | return sym; | |
c906108c | 1266 | |
774b6a14 TT |
1267 | /* Now search all static file-level symbols. Not strictly correct, |
1268 | but more useful than an error. */ | |
41f62f39 JK |
1269 | |
1270 | return lookup_static_symbol_aux (name, domain); | |
1271 | } | |
1272 | ||
1273 | /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs | |
1274 | first, then check the psymtabs. If a psymtab indicates the existence of the | |
1275 | desired name as a file-level static, then do psymtab-to-symtab conversion on | |
c378eb4e | 1276 | the fly and return the found symbol. */ |
41f62f39 JK |
1277 | |
1278 | struct symbol * | |
1279 | lookup_static_symbol_aux (const char *name, const domain_enum domain) | |
1280 | { | |
1281 | struct objfile *objfile; | |
1282 | struct symbol *sym; | |
c906108c | 1283 | |
94af9270 | 1284 | sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, domain); |
8155455b DC |
1285 | if (sym != NULL) |
1286 | return sym; | |
9af17804 | 1287 | |
ccefe4c4 TT |
1288 | ALL_OBJFILES (objfile) |
1289 | { | |
1290 | sym = lookup_symbol_aux_quick (objfile, STATIC_BLOCK, name, domain); | |
1291 | if (sym != NULL) | |
1292 | return sym; | |
1293 | } | |
c906108c | 1294 | |
8155455b | 1295 | return NULL; |
c906108c | 1296 | } |
8155455b | 1297 | |
e4051eeb | 1298 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 1299 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b DC |
1300 | |
1301 | static struct symbol * | |
94af9270 | 1302 | lookup_symbol_aux_local (const char *name, const struct block *block, |
13387711 SW |
1303 | const domain_enum domain, |
1304 | enum language language) | |
8155455b DC |
1305 | { |
1306 | struct symbol *sym; | |
89a9d1b1 | 1307 | const struct block *static_block = block_static_block (block); |
13387711 SW |
1308 | const char *scope = block_scope (block); |
1309 | ||
e4051eeb DC |
1310 | /* Check if either no block is specified or it's a global block. */ |
1311 | ||
89a9d1b1 DC |
1312 | if (static_block == NULL) |
1313 | return NULL; | |
e4051eeb | 1314 | |
89a9d1b1 | 1315 | while (block != static_block) |
f61e8913 | 1316 | { |
94af9270 | 1317 | sym = lookup_symbol_aux_block (name, block, domain); |
f61e8913 DC |
1318 | if (sym != NULL) |
1319 | return sym; | |
edb3359d | 1320 | |
f55ee35c | 1321 | if (language == language_cplus || language == language_fortran) |
13387711 | 1322 | { |
34eaf542 TT |
1323 | sym = cp_lookup_symbol_imports_or_template (scope, name, block, |
1324 | domain); | |
13387711 SW |
1325 | if (sym != NULL) |
1326 | return sym; | |
1327 | } | |
1328 | ||
edb3359d DJ |
1329 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
1330 | break; | |
f61e8913 DC |
1331 | block = BLOCK_SUPERBLOCK (block); |
1332 | } | |
1333 | ||
edb3359d | 1334 | /* We've reached the edge of the function without finding a result. */ |
e4051eeb | 1335 | |
f61e8913 DC |
1336 | return NULL; |
1337 | } | |
1338 | ||
3a40aaa0 UW |
1339 | /* Look up OBJFILE to BLOCK. */ |
1340 | ||
c0201579 | 1341 | struct objfile * |
3a40aaa0 UW |
1342 | lookup_objfile_from_block (const struct block *block) |
1343 | { | |
1344 | struct objfile *obj; | |
1345 | struct symtab *s; | |
1346 | ||
1347 | if (block == NULL) | |
1348 | return NULL; | |
1349 | ||
1350 | block = block_global_block (block); | |
1351 | /* Go through SYMTABS. */ | |
1352 | ALL_SYMTABS (obj, s) | |
1353 | if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK)) | |
61f0d762 JK |
1354 | { |
1355 | if (obj->separate_debug_objfile_backlink) | |
1356 | obj = obj->separate_debug_objfile_backlink; | |
1357 | ||
1358 | return obj; | |
1359 | } | |
3a40aaa0 UW |
1360 | |
1361 | return NULL; | |
1362 | } | |
1363 | ||
6c9353d3 PA |
1364 | /* Look up a symbol in a block; if found, fixup the symbol, and set |
1365 | block_found appropriately. */ | |
f61e8913 | 1366 | |
5f9a71c3 | 1367 | struct symbol * |
94af9270 | 1368 | lookup_symbol_aux_block (const char *name, const struct block *block, |
21b556f4 | 1369 | const domain_enum domain) |
f61e8913 DC |
1370 | { |
1371 | struct symbol *sym; | |
f61e8913 | 1372 | |
94af9270 | 1373 | sym = lookup_block_symbol (block, name, domain); |
f61e8913 | 1374 | if (sym) |
8155455b | 1375 | { |
f61e8913 | 1376 | block_found = block; |
21b556f4 | 1377 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
1378 | } |
1379 | ||
1380 | return NULL; | |
1381 | } | |
1382 | ||
3a40aaa0 UW |
1383 | /* Check all global symbols in OBJFILE in symtabs and |
1384 | psymtabs. */ | |
1385 | ||
1386 | struct symbol * | |
15d123c9 | 1387 | lookup_global_symbol_from_objfile (const struct objfile *main_objfile, |
3a40aaa0 | 1388 | const char *name, |
21b556f4 | 1389 | const domain_enum domain) |
3a40aaa0 | 1390 | { |
15d123c9 | 1391 | const struct objfile *objfile; |
3a40aaa0 UW |
1392 | struct symbol *sym; |
1393 | struct blockvector *bv; | |
1394 | const struct block *block; | |
1395 | struct symtab *s; | |
3a40aaa0 | 1396 | |
15d123c9 TG |
1397 | for (objfile = main_objfile; |
1398 | objfile; | |
1399 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
1400 | { | |
1401 | /* Go through symtabs. */ | |
1402 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1403 | { | |
1404 | bv = BLOCKVECTOR (s); | |
1405 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
94af9270 | 1406 | sym = lookup_block_symbol (block, name, domain); |
15d123c9 TG |
1407 | if (sym) |
1408 | { | |
1409 | block_found = block; | |
1410 | return fixup_symbol_section (sym, (struct objfile *)objfile); | |
1411 | } | |
1412 | } | |
1413 | ||
ccefe4c4 TT |
1414 | sym = lookup_symbol_aux_quick ((struct objfile *) objfile, GLOBAL_BLOCK, |
1415 | name, domain); | |
1416 | if (sym) | |
1417 | return sym; | |
15d123c9 | 1418 | } |
56e3f43c | 1419 | |
3a40aaa0 UW |
1420 | return NULL; |
1421 | } | |
1422 | ||
8155455b DC |
1423 | /* Check to see if the symbol is defined in one of the symtabs. |
1424 | BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
1425 | depending on whether or not we want to search global symbols or | |
1426 | static symbols. */ | |
1427 | ||
1428 | static struct symbol * | |
94af9270 | 1429 | lookup_symbol_aux_symtabs (int block_index, const char *name, |
21b556f4 | 1430 | const domain_enum domain) |
8155455b DC |
1431 | { |
1432 | struct symbol *sym; | |
1433 | struct objfile *objfile; | |
1434 | struct blockvector *bv; | |
1435 | const struct block *block; | |
1436 | struct symtab *s; | |
1437 | ||
58b6ab13 | 1438 | ALL_OBJFILES (objfile) |
8155455b | 1439 | { |
774b6a14 TT |
1440 | if (objfile->sf) |
1441 | objfile->sf->qf->pre_expand_symtabs_matching (objfile, | |
1442 | block_index, | |
1443 | name, domain); | |
1444 | ||
58b6ab13 TT |
1445 | ALL_OBJFILE_SYMTABS (objfile, s) |
1446 | if (s->primary) | |
1447 | { | |
1448 | bv = BLOCKVECTOR (s); | |
1449 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
1450 | sym = lookup_block_symbol (block, name, domain); | |
1451 | if (sym) | |
1452 | { | |
1453 | block_found = block; | |
1454 | return fixup_symbol_section (sym, objfile); | |
1455 | } | |
1456 | } | |
8155455b DC |
1457 | } |
1458 | ||
1459 | return NULL; | |
1460 | } | |
1461 | ||
ccefe4c4 TT |
1462 | /* A helper function for lookup_symbol_aux that interfaces with the |
1463 | "quick" symbol table functions. */ | |
8155455b DC |
1464 | |
1465 | static struct symbol * | |
ccefe4c4 TT |
1466 | lookup_symbol_aux_quick (struct objfile *objfile, int kind, |
1467 | const char *name, const domain_enum domain) | |
8155455b | 1468 | { |
ccefe4c4 | 1469 | struct symtab *symtab; |
8155455b DC |
1470 | struct blockvector *bv; |
1471 | const struct block *block; | |
ccefe4c4 | 1472 | struct symbol *sym; |
8155455b | 1473 | |
ccefe4c4 TT |
1474 | if (!objfile->sf) |
1475 | return NULL; | |
1476 | symtab = objfile->sf->qf->lookup_symbol (objfile, kind, name, domain); | |
1477 | if (!symtab) | |
1478 | return NULL; | |
8155455b | 1479 | |
ccefe4c4 TT |
1480 | bv = BLOCKVECTOR (symtab); |
1481 | block = BLOCKVECTOR_BLOCK (bv, kind); | |
1482 | sym = lookup_block_symbol (block, name, domain); | |
1483 | if (!sym) | |
1484 | { | |
1485 | /* This shouldn't be necessary, but as a last resort try | |
1486 | looking in the statics even though the psymtab claimed | |
c378eb4e | 1487 | the symbol was global, or vice-versa. It's possible |
ccefe4c4 TT |
1488 | that the psymtab gets it wrong in some cases. */ |
1489 | ||
1490 | /* FIXME: carlton/2002-09-30: Should we really do that? | |
1491 | If that happens, isn't it likely to be a GDB error, in | |
1492 | which case we should fix the GDB error rather than | |
1493 | silently dealing with it here? So I'd vote for | |
1494 | removing the check for the symbol in the other | |
1495 | block. */ | |
1496 | block = BLOCKVECTOR_BLOCK (bv, | |
1497 | kind == GLOBAL_BLOCK ? | |
1498 | STATIC_BLOCK : GLOBAL_BLOCK); | |
1499 | sym = lookup_block_symbol (block, name, domain); | |
1500 | if (!sym) | |
3e43a32a MS |
1501 | error (_("\ |
1502 | Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\ | |
1503 | %s may be an inlined function, or may be a template function\n\ | |
1504 | (if a template, try specifying an instantiation: %s<type>)."), | |
ccefe4c4 TT |
1505 | kind == GLOBAL_BLOCK ? "global" : "static", |
1506 | name, symtab->filename, name, name); | |
1507 | } | |
1508 | return fixup_symbol_section (sym, objfile); | |
8155455b DC |
1509 | } |
1510 | ||
5f9a71c3 DC |
1511 | /* A default version of lookup_symbol_nonlocal for use by languages |
1512 | that can't think of anything better to do. This implements the C | |
1513 | lookup rules. */ | |
1514 | ||
1515 | struct symbol * | |
1516 | basic_lookup_symbol_nonlocal (const char *name, | |
5f9a71c3 | 1517 | const struct block *block, |
21b556f4 | 1518 | const domain_enum domain) |
5f9a71c3 DC |
1519 | { |
1520 | struct symbol *sym; | |
1521 | ||
1522 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
1523 | this (or what turned into this) was part of lookup_symbol_aux; | |
1524 | I'm much less worried about these questions now, since these | |
1525 | decisions have turned out well, but I leave these comments here | |
1526 | for posterity. */ | |
1527 | ||
1528 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
1529 | not it would be appropriate to search the current global block | |
1530 | here as well. (That's what this code used to do before the | |
1531 | is_a_field_of_this check was moved up.) On the one hand, it's | |
1532 | redundant with the lookup_symbol_aux_symtabs search that happens | |
1533 | next. On the other hand, if decode_line_1 is passed an argument | |
1534 | like filename:var, then the user presumably wants 'var' to be | |
1535 | searched for in filename. On the third hand, there shouldn't be | |
1536 | multiple global variables all of which are named 'var', and it's | |
1537 | not like decode_line_1 has ever restricted its search to only | |
1538 | global variables in a single filename. All in all, only | |
1539 | searching the static block here seems best: it's correct and it's | |
1540 | cleanest. */ | |
1541 | ||
1542 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
1543 | issue here: if you usually search for global symbols in the | |
1544 | current file, then it would be slightly better to search the | |
1545 | current global block before searching all the symtabs. But there | |
1546 | are other factors that have a much greater effect on performance | |
1547 | than that one, so I don't think we should worry about that for | |
1548 | now. */ | |
1549 | ||
94af9270 | 1550 | sym = lookup_symbol_static (name, block, domain); |
5f9a71c3 DC |
1551 | if (sym != NULL) |
1552 | return sym; | |
1553 | ||
94af9270 | 1554 | return lookup_symbol_global (name, block, domain); |
5f9a71c3 DC |
1555 | } |
1556 | ||
1557 | /* Lookup a symbol in the static block associated to BLOCK, if there | |
1558 | is one; do nothing if BLOCK is NULL or a global block. */ | |
1559 | ||
1560 | struct symbol * | |
1561 | lookup_symbol_static (const char *name, | |
5f9a71c3 | 1562 | const struct block *block, |
21b556f4 | 1563 | const domain_enum domain) |
5f9a71c3 DC |
1564 | { |
1565 | const struct block *static_block = block_static_block (block); | |
1566 | ||
1567 | if (static_block != NULL) | |
94af9270 | 1568 | return lookup_symbol_aux_block (name, static_block, domain); |
5f9a71c3 DC |
1569 | else |
1570 | return NULL; | |
1571 | } | |
1572 | ||
1573 | /* Lookup a symbol in all files' global blocks (searching psymtabs if | |
1574 | necessary). */ | |
1575 | ||
1576 | struct symbol * | |
1577 | lookup_symbol_global (const char *name, | |
3a40aaa0 | 1578 | const struct block *block, |
21b556f4 | 1579 | const domain_enum domain) |
5f9a71c3 | 1580 | { |
3a40aaa0 UW |
1581 | struct symbol *sym = NULL; |
1582 | struct objfile *objfile = NULL; | |
1583 | ||
1584 | /* Call library-specific lookup procedure. */ | |
1585 | objfile = lookup_objfile_from_block (block); | |
1586 | if (objfile != NULL) | |
94af9270 | 1587 | sym = solib_global_lookup (objfile, name, domain); |
3a40aaa0 UW |
1588 | if (sym != NULL) |
1589 | return sym; | |
5f9a71c3 | 1590 | |
94af9270 | 1591 | sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, domain); |
5f9a71c3 DC |
1592 | if (sym != NULL) |
1593 | return sym; | |
1594 | ||
ccefe4c4 TT |
1595 | ALL_OBJFILES (objfile) |
1596 | { | |
1597 | sym = lookup_symbol_aux_quick (objfile, GLOBAL_BLOCK, name, domain); | |
1598 | if (sym) | |
1599 | return sym; | |
1600 | } | |
1601 | ||
1602 | return NULL; | |
5f9a71c3 DC |
1603 | } |
1604 | ||
5eeb2539 | 1605 | int |
9af17804 | 1606 | symbol_matches_domain (enum language symbol_language, |
5eeb2539 AR |
1607 | domain_enum symbol_domain, |
1608 | domain_enum domain) | |
1609 | { | |
9af17804 | 1610 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". |
5eeb2539 AR |
1611 | A Java class declaration also defines a typedef for the class. |
1612 | Similarly, any Ada type declaration implicitly defines a typedef. */ | |
1613 | if (symbol_language == language_cplus | |
6aecb9c2 | 1614 | || symbol_language == language_d |
5eeb2539 AR |
1615 | || symbol_language == language_java |
1616 | || symbol_language == language_ada) | |
1617 | { | |
1618 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
1619 | && symbol_domain == STRUCT_DOMAIN) | |
1620 | return 1; | |
1621 | } | |
1622 | /* For all other languages, strict match is required. */ | |
1623 | return (symbol_domain == domain); | |
1624 | } | |
1625 | ||
ccefe4c4 TT |
1626 | /* Look up a type named NAME in the struct_domain. The type returned |
1627 | must not be opaque -- i.e., must have at least one field | |
1628 | defined. */ | |
c906108c | 1629 | |
ccefe4c4 TT |
1630 | struct type * |
1631 | lookup_transparent_type (const char *name) | |
c906108c | 1632 | { |
ccefe4c4 TT |
1633 | return current_language->la_lookup_transparent_type (name); |
1634 | } | |
9af17804 | 1635 | |
ccefe4c4 TT |
1636 | /* A helper for basic_lookup_transparent_type that interfaces with the |
1637 | "quick" symbol table functions. */ | |
357e46e7 | 1638 | |
ccefe4c4 TT |
1639 | static struct type * |
1640 | basic_lookup_transparent_type_quick (struct objfile *objfile, int kind, | |
1641 | const char *name) | |
1642 | { | |
1643 | struct symtab *symtab; | |
1644 | struct blockvector *bv; | |
1645 | struct block *block; | |
1646 | struct symbol *sym; | |
c906108c | 1647 | |
ccefe4c4 TT |
1648 | if (!objfile->sf) |
1649 | return NULL; | |
1650 | symtab = objfile->sf->qf->lookup_symbol (objfile, kind, name, STRUCT_DOMAIN); | |
1651 | if (!symtab) | |
1652 | return NULL; | |
c906108c | 1653 | |
ccefe4c4 TT |
1654 | bv = BLOCKVECTOR (symtab); |
1655 | block = BLOCKVECTOR_BLOCK (bv, kind); | |
1656 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); | |
1657 | if (!sym) | |
9af17804 | 1658 | { |
ccefe4c4 TT |
1659 | int other_kind = kind == GLOBAL_BLOCK ? STATIC_BLOCK : GLOBAL_BLOCK; |
1660 | ||
1661 | /* This shouldn't be necessary, but as a last resort | |
1662 | * try looking in the 'other kind' even though the psymtab | |
c378eb4e | 1663 | * claimed the symbol was one thing. It's possible that |
ccefe4c4 TT |
1664 | * the psymtab gets it wrong in some cases. |
1665 | */ | |
1666 | block = BLOCKVECTOR_BLOCK (bv, other_kind); | |
1667 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); | |
1668 | if (!sym) | |
c378eb4e | 1669 | /* FIXME; error is wrong in one case. */ |
3e43a32a MS |
1670 | error (_("\ |
1671 | Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ | |
ccefe4c4 TT |
1672 | %s may be an inlined function, or may be a template function\n\ |
1673 | (if a template, try specifying an instantiation: %s<type>)."), | |
1674 | name, symtab->filename, name, name); | |
c906108c | 1675 | } |
ccefe4c4 TT |
1676 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1677 | return SYMBOL_TYPE (sym); | |
c906108c | 1678 | |
ccefe4c4 | 1679 | return NULL; |
b368761e | 1680 | } |
c906108c | 1681 | |
b368761e DC |
1682 | /* The standard implementation of lookup_transparent_type. This code |
1683 | was modeled on lookup_symbol -- the parts not relevant to looking | |
1684 | up types were just left out. In particular it's assumed here that | |
1685 | types are available in struct_domain and only at file-static or | |
1686 | global blocks. */ | |
c906108c SS |
1687 | |
1688 | struct type * | |
b368761e | 1689 | basic_lookup_transparent_type (const char *name) |
c906108c | 1690 | { |
52f0bd74 AC |
1691 | struct symbol *sym; |
1692 | struct symtab *s = NULL; | |
c906108c | 1693 | struct blockvector *bv; |
52f0bd74 AC |
1694 | struct objfile *objfile; |
1695 | struct block *block; | |
ccefe4c4 | 1696 | struct type *t; |
c906108c SS |
1697 | |
1698 | /* Now search all the global symbols. Do the symtab's first, then | |
c378eb4e | 1699 | check the psymtab's. If a psymtab indicates the existence |
c906108c SS |
1700 | of the desired name as a global, then do psymtab-to-symtab |
1701 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 1702 | |
58b6ab13 | 1703 | ALL_OBJFILES (objfile) |
c5aa993b | 1704 | { |
774b6a14 TT |
1705 | if (objfile->sf) |
1706 | objfile->sf->qf->pre_expand_symtabs_matching (objfile, | |
1707 | GLOBAL_BLOCK, | |
1708 | name, STRUCT_DOMAIN); | |
1709 | ||
58b6ab13 TT |
1710 | ALL_OBJFILE_SYMTABS (objfile, s) |
1711 | if (s->primary) | |
1712 | { | |
1713 | bv = BLOCKVECTOR (s); | |
1714 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1715 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); | |
1716 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1717 | { | |
1718 | return SYMBOL_TYPE (sym); | |
1719 | } | |
1720 | } | |
c5aa993b | 1721 | } |
c906108c | 1722 | |
ccefe4c4 | 1723 | ALL_OBJFILES (objfile) |
c5aa993b | 1724 | { |
ccefe4c4 TT |
1725 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); |
1726 | if (t) | |
1727 | return t; | |
c5aa993b | 1728 | } |
c906108c SS |
1729 | |
1730 | /* Now search the static file-level symbols. | |
1731 | Not strictly correct, but more useful than an error. | |
1732 | Do the symtab's first, then | |
c378eb4e | 1733 | check the psymtab's. If a psymtab indicates the existence |
c906108c | 1734 | of the desired name as a file-level static, then do psymtab-to-symtab |
c378eb4e | 1735 | conversion on the fly and return the found symbol. */ |
c906108c | 1736 | |
54ec275a | 1737 | ALL_OBJFILES (objfile) |
c5aa993b | 1738 | { |
774b6a14 TT |
1739 | if (objfile->sf) |
1740 | objfile->sf->qf->pre_expand_symtabs_matching (objfile, STATIC_BLOCK, | |
1741 | name, STRUCT_DOMAIN); | |
1742 | ||
54ec275a | 1743 | ALL_OBJFILE_SYMTABS (objfile, s) |
c5aa993b | 1744 | { |
54ec275a KS |
1745 | bv = BLOCKVECTOR (s); |
1746 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1747 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); | |
1748 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1749 | { | |
1750 | return SYMBOL_TYPE (sym); | |
1751 | } | |
c5aa993b JM |
1752 | } |
1753 | } | |
c906108c | 1754 | |
ccefe4c4 | 1755 | ALL_OBJFILES (objfile) |
c5aa993b | 1756 | { |
ccefe4c4 TT |
1757 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); |
1758 | if (t) | |
1759 | return t; | |
c5aa993b | 1760 | } |
ccefe4c4 | 1761 | |
c906108c SS |
1762 | return (struct type *) 0; |
1763 | } | |
1764 | ||
1765 | ||
c378eb4e | 1766 | /* Find the name of the file containing main(). */ |
c906108c | 1767 | /* FIXME: What about languages without main() or specially linked |
c378eb4e | 1768 | executables that have no main() ? */ |
c906108c | 1769 | |
dd786858 | 1770 | const char * |
ccefe4c4 | 1771 | find_main_filename (void) |
c906108c | 1772 | { |
52f0bd74 | 1773 | struct objfile *objfile; |
dd786858 | 1774 | char *name = main_name (); |
c906108c | 1775 | |
ccefe4c4 | 1776 | ALL_OBJFILES (objfile) |
c5aa993b | 1777 | { |
dd786858 TT |
1778 | const char *result; |
1779 | ||
ccefe4c4 TT |
1780 | if (!objfile->sf) |
1781 | continue; | |
1782 | result = objfile->sf->qf->find_symbol_file (objfile, name); | |
1783 | if (result) | |
1784 | return result; | |
c5aa993b | 1785 | } |
c906108c SS |
1786 | return (NULL); |
1787 | } | |
1788 | ||
176620f1 | 1789 | /* Search BLOCK for symbol NAME in DOMAIN. |
c906108c SS |
1790 | |
1791 | Note that if NAME is the demangled form of a C++ symbol, we will fail | |
1792 | to find a match during the binary search of the non-encoded names, but | |
1793 | for now we don't worry about the slight inefficiency of looking for | |
1794 | a match we'll never find, since it will go pretty quick. Once the | |
1795 | binary search terminates, we drop through and do a straight linear | |
1bae87b9 | 1796 | search on the symbols. Each symbol which is marked as being a ObjC/C++ |
9af17804 | 1797 | symbol (language_cplus or language_objc set) has both the encoded and |
c378eb4e | 1798 | non-encoded names tested for a match. */ |
c906108c SS |
1799 | |
1800 | struct symbol * | |
aa1ee363 | 1801 | lookup_block_symbol (const struct block *block, const char *name, |
176620f1 | 1802 | const domain_enum domain) |
c906108c | 1803 | { |
de4f826b DC |
1804 | struct dict_iterator iter; |
1805 | struct symbol *sym; | |
c906108c | 1806 | |
de4f826b | 1807 | if (!BLOCK_FUNCTION (block)) |
261397f8 | 1808 | { |
de4f826b DC |
1809 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); |
1810 | sym != NULL; | |
1811 | sym = dict_iter_name_next (name, &iter)) | |
261397f8 | 1812 | { |
5eeb2539 | 1813 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
94af9270 | 1814 | SYMBOL_DOMAIN (sym), domain)) |
261397f8 DJ |
1815 | return sym; |
1816 | } | |
1817 | return NULL; | |
1818 | } | |
526e70c0 | 1819 | else |
c906108c | 1820 | { |
526e70c0 DC |
1821 | /* Note that parameter symbols do not always show up last in the |
1822 | list; this loop makes sure to take anything else other than | |
1823 | parameter symbols first; it only uses parameter symbols as a | |
1824 | last resort. Note that this only takes up extra computation | |
1825 | time on a match. */ | |
de4f826b DC |
1826 | |
1827 | struct symbol *sym_found = NULL; | |
1828 | ||
1829 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); | |
1830 | sym != NULL; | |
1831 | sym = dict_iter_name_next (name, &iter)) | |
c906108c | 1832 | { |
5eeb2539 | 1833 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
94af9270 | 1834 | SYMBOL_DOMAIN (sym), domain)) |
c906108c | 1835 | { |
c906108c | 1836 | sym_found = sym; |
2a2d4dc3 | 1837 | if (!SYMBOL_IS_ARGUMENT (sym)) |
c906108c SS |
1838 | { |
1839 | break; | |
1840 | } | |
1841 | } | |
c906108c | 1842 | } |
c378eb4e | 1843 | return (sym_found); /* Will be NULL if not found. */ |
c906108c | 1844 | } |
c906108c SS |
1845 | } |
1846 | ||
f8eba3c6 TT |
1847 | /* Iterate over the symbols named NAME, matching DOMAIN, starting with |
1848 | BLOCK. | |
1849 | ||
1850 | For each symbol that matches, CALLBACK is called. The symbol and | |
1851 | DATA are passed to the callback. | |
1852 | ||
1853 | If CALLBACK returns zero, the iteration ends. Otherwise, the | |
1854 | search continues. This function iterates upward through blocks. | |
1855 | When the outermost block has been finished, the function | |
1856 | returns. */ | |
1857 | ||
1858 | void | |
1859 | iterate_over_symbols (const struct block *block, const char *name, | |
1860 | const domain_enum domain, | |
1861 | int (*callback) (struct symbol *, void *), | |
1862 | void *data) | |
1863 | { | |
1864 | while (block) | |
1865 | { | |
1866 | struct dict_iterator iter; | |
1867 | struct symbol *sym; | |
1868 | ||
1869 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); | |
1870 | sym != NULL; | |
1871 | sym = dict_iter_name_next (name, &iter)) | |
1872 | { | |
1873 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), | |
1874 | SYMBOL_DOMAIN (sym), domain)) | |
1875 | { | |
1876 | if (!callback (sym, data)) | |
1877 | return; | |
1878 | } | |
1879 | } | |
1880 | ||
1881 | block = BLOCK_SUPERBLOCK (block); | |
1882 | } | |
1883 | } | |
1884 | ||
c906108c | 1885 | /* Find the symtab associated with PC and SECTION. Look through the |
c378eb4e | 1886 | psymtabs and read in another symtab if necessary. */ |
c906108c SS |
1887 | |
1888 | struct symtab * | |
714835d5 | 1889 | find_pc_sect_symtab (CORE_ADDR pc, struct obj_section *section) |
c906108c | 1890 | { |
52f0bd74 | 1891 | struct block *b; |
c906108c | 1892 | struct blockvector *bv; |
52f0bd74 AC |
1893 | struct symtab *s = NULL; |
1894 | struct symtab *best_s = NULL; | |
52f0bd74 | 1895 | struct objfile *objfile; |
6c95b8df | 1896 | struct program_space *pspace; |
c906108c | 1897 | CORE_ADDR distance = 0; |
8a48e967 DJ |
1898 | struct minimal_symbol *msymbol; |
1899 | ||
6c95b8df PA |
1900 | pspace = current_program_space; |
1901 | ||
8a48e967 DJ |
1902 | /* If we know that this is not a text address, return failure. This is |
1903 | necessary because we loop based on the block's high and low code | |
1904 | addresses, which do not include the data ranges, and because | |
1905 | we call find_pc_sect_psymtab which has a similar restriction based | |
1906 | on the partial_symtab's texthigh and textlow. */ | |
1907 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
1908 | if (msymbol | |
712f90be TT |
1909 | && (MSYMBOL_TYPE (msymbol) == mst_data |
1910 | || MSYMBOL_TYPE (msymbol) == mst_bss | |
1911 | || MSYMBOL_TYPE (msymbol) == mst_abs | |
1912 | || MSYMBOL_TYPE (msymbol) == mst_file_data | |
1913 | || MSYMBOL_TYPE (msymbol) == mst_file_bss)) | |
8a48e967 | 1914 | return NULL; |
c906108c SS |
1915 | |
1916 | /* Search all symtabs for the one whose file contains our address, and which | |
1917 | is the smallest of all the ones containing the address. This is designed | |
1918 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
1919 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
1920 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
1921 | ||
1922 | This happens for native ecoff format, where code from included files | |
c378eb4e | 1923 | gets its own symtab. The symtab for the included file should have |
c906108c SS |
1924 | been read in already via the dependency mechanism. |
1925 | It might be swifter to create several symtabs with the same name | |
1926 | like xcoff does (I'm not sure). | |
1927 | ||
1928 | It also happens for objfiles that have their functions reordered. | |
1929 | For these, the symtab we are looking for is not necessarily read in. */ | |
1930 | ||
11309657 | 1931 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1932 | { |
1933 | bv = BLOCKVECTOR (s); | |
1934 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 1935 | |
c5aa993b | 1936 | if (BLOCK_START (b) <= pc |
c5aa993b | 1937 | && BLOCK_END (b) > pc |
c5aa993b JM |
1938 | && (distance == 0 |
1939 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
1940 | { | |
1941 | /* For an objfile that has its functions reordered, | |
1942 | find_pc_psymtab will find the proper partial symbol table | |
1943 | and we simply return its corresponding symtab. */ | |
1944 | /* In order to better support objfiles that contain both | |
1945 | stabs and coff debugging info, we continue on if a psymtab | |
c378eb4e | 1946 | can't be found. */ |
ccefe4c4 | 1947 | if ((objfile->flags & OBJF_REORDERED) && objfile->sf) |
c5aa993b | 1948 | { |
ccefe4c4 | 1949 | struct symtab *result; |
433759f7 | 1950 | |
ccefe4c4 TT |
1951 | result |
1952 | = objfile->sf->qf->find_pc_sect_symtab (objfile, | |
1953 | msymbol, | |
1954 | pc, section, | |
1955 | 0); | |
1956 | if (result) | |
1957 | return result; | |
c5aa993b JM |
1958 | } |
1959 | if (section != 0) | |
1960 | { | |
de4f826b | 1961 | struct dict_iterator iter; |
261397f8 | 1962 | struct symbol *sym = NULL; |
c906108c | 1963 | |
de4f826b | 1964 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 1965 | { |
261397f8 | 1966 | fixup_symbol_section (sym, objfile); |
714835d5 | 1967 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym), section)) |
c5aa993b JM |
1968 | break; |
1969 | } | |
de4f826b | 1970 | if (sym == NULL) |
c378eb4e MS |
1971 | continue; /* No symbol in this symtab matches |
1972 | section. */ | |
c5aa993b JM |
1973 | } |
1974 | distance = BLOCK_END (b) - BLOCK_START (b); | |
1975 | best_s = s; | |
1976 | } | |
1977 | } | |
c906108c SS |
1978 | |
1979 | if (best_s != NULL) | |
c5aa993b | 1980 | return (best_s); |
c906108c | 1981 | |
ccefe4c4 TT |
1982 | ALL_OBJFILES (objfile) |
1983 | { | |
1984 | struct symtab *result; | |
433759f7 | 1985 | |
ccefe4c4 TT |
1986 | if (!objfile->sf) |
1987 | continue; | |
1988 | result = objfile->sf->qf->find_pc_sect_symtab (objfile, | |
1989 | msymbol, | |
1990 | pc, section, | |
1991 | 1); | |
1992 | if (result) | |
1993 | return result; | |
1994 | } | |
1995 | ||
1996 | return NULL; | |
c906108c SS |
1997 | } |
1998 | ||
c378eb4e MS |
1999 | /* Find the symtab associated with PC. Look through the psymtabs and read |
2000 | in another symtab if necessary. Backward compatibility, no section. */ | |
c906108c SS |
2001 | |
2002 | struct symtab * | |
fba45db2 | 2003 | find_pc_symtab (CORE_ADDR pc) |
c906108c SS |
2004 | { |
2005 | return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); | |
2006 | } | |
c906108c | 2007 | \f |
c5aa993b | 2008 | |
7e73cedf | 2009 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
2010 | Return a structure containing a symtab pointer, a line number, |
2011 | and a pc range for the entire source line. | |
2012 | The value's .pc field is NOT the specified pc. | |
2013 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
2014 | use the line that ends there. Otherwise, in that case, the line | |
2015 | that begins there is used. */ | |
2016 | ||
2017 | /* The big complication here is that a line may start in one file, and end just | |
2018 | before the start of another file. This usually occurs when you #include | |
2019 | code in the middle of a subroutine. To properly find the end of a line's PC | |
2020 | range, we must search all symtabs associated with this compilation unit, and | |
2021 | find the one whose first PC is closer than that of the next line in this | |
2022 | symtab. */ | |
2023 | ||
2024 | /* If it's worth the effort, we could be using a binary search. */ | |
2025 | ||
2026 | struct symtab_and_line | |
714835d5 | 2027 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c SS |
2028 | { |
2029 | struct symtab *s; | |
52f0bd74 AC |
2030 | struct linetable *l; |
2031 | int len; | |
2032 | int i; | |
2033 | struct linetable_entry *item; | |
c906108c SS |
2034 | struct symtab_and_line val; |
2035 | struct blockvector *bv; | |
2036 | struct minimal_symbol *msymbol; | |
2037 | struct minimal_symbol *mfunsym; | |
93b55aa1 | 2038 | struct objfile *objfile; |
c906108c SS |
2039 | |
2040 | /* Info on best line seen so far, and where it starts, and its file. */ | |
2041 | ||
2042 | struct linetable_entry *best = NULL; | |
2043 | CORE_ADDR best_end = 0; | |
2044 | struct symtab *best_symtab = 0; | |
2045 | ||
2046 | /* Store here the first line number | |
2047 | of a file which contains the line at the smallest pc after PC. | |
2048 | If we don't find a line whose range contains PC, | |
2049 | we will use a line one less than this, | |
2050 | with a range from the start of that file to the first line's pc. */ | |
2051 | struct linetable_entry *alt = NULL; | |
2052 | struct symtab *alt_symtab = 0; | |
2053 | ||
2054 | /* Info on best line seen in this file. */ | |
2055 | ||
2056 | struct linetable_entry *prev; | |
2057 | ||
2058 | /* If this pc is not from the current frame, | |
2059 | it is the address of the end of a call instruction. | |
2060 | Quite likely that is the start of the following statement. | |
2061 | But what we want is the statement containing the instruction. | |
2062 | Fudge the pc to make sure we get that. */ | |
2063 | ||
fe39c653 | 2064 | init_sal (&val); /* initialize to zeroes */ |
c906108c | 2065 | |
6c95b8df PA |
2066 | val.pspace = current_program_space; |
2067 | ||
b77b1eb7 JB |
2068 | /* It's tempting to assume that, if we can't find debugging info for |
2069 | any function enclosing PC, that we shouldn't search for line | |
2070 | number info, either. However, GAS can emit line number info for | |
2071 | assembly files --- very helpful when debugging hand-written | |
2072 | assembly code. In such a case, we'd have no debug info for the | |
2073 | function, but we would have line info. */ | |
648f4f79 | 2074 | |
c906108c SS |
2075 | if (notcurrent) |
2076 | pc -= 1; | |
2077 | ||
c5aa993b | 2078 | /* elz: added this because this function returned the wrong |
c906108c | 2079 | information if the pc belongs to a stub (import/export) |
c378eb4e | 2080 | to call a shlib function. This stub would be anywhere between |
9af17804 | 2081 | two functions in the target, and the line info was erroneously |
c378eb4e MS |
2082 | taken to be the one of the line before the pc. */ |
2083 | ||
c906108c | 2084 | /* RT: Further explanation: |
c5aa993b | 2085 | |
c906108c SS |
2086 | * We have stubs (trampolines) inserted between procedures. |
2087 | * | |
2088 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
2089 | * exists in the main image. | |
2090 | * | |
2091 | * In the minimal symbol table, we have a bunch of symbols | |
c378eb4e | 2092 | * sorted by start address. The stubs are marked as "trampoline", |
c906108c SS |
2093 | * the others appear as text. E.g.: |
2094 | * | |
9af17804 | 2095 | * Minimal symbol table for main image |
c906108c SS |
2096 | * main: code for main (text symbol) |
2097 | * shr1: stub (trampoline symbol) | |
2098 | * foo: code for foo (text symbol) | |
2099 | * ... | |
2100 | * Minimal symbol table for "shr1" image: | |
2101 | * ... | |
2102 | * shr1: code for shr1 (text symbol) | |
2103 | * ... | |
2104 | * | |
2105 | * So the code below is trying to detect if we are in the stub | |
2106 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
2107 | * and if found, do the symbolization from the real-code address | |
2108 | * rather than the stub address. | |
2109 | * | |
2110 | * Assumptions being made about the minimal symbol table: | |
2111 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
c378eb4e | 2112 | * if we're really in the trampoline.s If we're beyond it (say |
9af17804 | 2113 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
2114 | * symbol (the "foo" text symbol for example) and will not |
2115 | * return the trampoline. | |
2116 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
2117 | * corresponding to the trampoline, and whose address will | |
c378eb4e | 2118 | * be different than the trampoline address. I put in a sanity |
c906108c SS |
2119 | * check for the address being the same, to avoid an |
2120 | * infinite recursion. | |
2121 | */ | |
c5aa993b JM |
2122 | msymbol = lookup_minimal_symbol_by_pc (pc); |
2123 | if (msymbol != NULL) | |
c906108c | 2124 | if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) |
c5aa993b | 2125 | { |
2335f48e | 2126 | mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol), |
5520a790 | 2127 | NULL); |
c5aa993b JM |
2128 | if (mfunsym == NULL) |
2129 | /* I eliminated this warning since it is coming out | |
2130 | * in the following situation: | |
2131 | * gdb shmain // test program with shared libraries | |
2132 | * (gdb) break shr1 // function in shared lib | |
2133 | * Warning: In stub for ... | |
9af17804 | 2134 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
2135 | * so of course we can't find the real func/line info, |
2136 | * but the "break" still works, and the warning is annoying. | |
c378eb4e | 2137 | * So I commented out the warning. RT */ |
3e43a32a | 2138 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
2139 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
2140 | ; | |
c5aa993b | 2141 | /* fall through */ |
3e43a32a MS |
2142 | else if (SYMBOL_VALUE_ADDRESS (mfunsym) |
2143 | == SYMBOL_VALUE_ADDRESS (msymbol)) | |
c5aa993b | 2144 | /* Avoid infinite recursion */ |
c378eb4e | 2145 | /* See above comment about why warning is commented out. */ |
3e43a32a | 2146 | /* warning ("In stub for %s; unable to find real function/line info", |
c378eb4e MS |
2147 | SYMBOL_LINKAGE_NAME (msymbol)); */ |
2148 | ; | |
c5aa993b JM |
2149 | /* fall through */ |
2150 | else | |
82cf6c60 | 2151 | return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 2152 | } |
c906108c SS |
2153 | |
2154 | ||
2155 | s = find_pc_sect_symtab (pc, section); | |
2156 | if (!s) | |
2157 | { | |
c378eb4e | 2158 | /* If no symbol information, return previous pc. */ |
c906108c SS |
2159 | if (notcurrent) |
2160 | pc++; | |
2161 | val.pc = pc; | |
2162 | return val; | |
2163 | } | |
2164 | ||
2165 | bv = BLOCKVECTOR (s); | |
93b55aa1 | 2166 | objfile = s->objfile; |
c906108c SS |
2167 | |
2168 | /* Look at all the symtabs that share this blockvector. | |
2169 | They all have the same apriori range, that we found was right; | |
2170 | but they have different line tables. */ | |
2171 | ||
93b55aa1 | 2172 | ALL_OBJFILE_SYMTABS (objfile, s) |
c906108c | 2173 | { |
93b55aa1 JK |
2174 | if (BLOCKVECTOR (s) != bv) |
2175 | continue; | |
2176 | ||
c906108c SS |
2177 | /* Find the best line in this symtab. */ |
2178 | l = LINETABLE (s); | |
2179 | if (!l) | |
c5aa993b | 2180 | continue; |
c906108c SS |
2181 | len = l->nitems; |
2182 | if (len <= 0) | |
2183 | { | |
2184 | /* I think len can be zero if the symtab lacks line numbers | |
2185 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
2186 | I'm not sure which, and maybe it depends on the symbol | |
2187 | reader). */ | |
2188 | continue; | |
2189 | } | |
2190 | ||
2191 | prev = NULL; | |
c378eb4e | 2192 | item = l->item; /* Get first line info. */ |
c906108c SS |
2193 | |
2194 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 2195 | If so, record this file, and its first line, as best alternate. */ |
c906108c SS |
2196 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
2197 | { | |
2198 | alt = item; | |
2199 | alt_symtab = s; | |
2200 | } | |
2201 | ||
2202 | for (i = 0; i < len; i++, item++) | |
2203 | { | |
2204 | /* Leave prev pointing to the linetable entry for the last line | |
2205 | that started at or before PC. */ | |
2206 | if (item->pc > pc) | |
2207 | break; | |
2208 | ||
2209 | prev = item; | |
2210 | } | |
2211 | ||
2212 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
2213 | item points at the next line. If we ran off the end of the linetable |
2214 | (pc >= start of the last line), then prev == item. If pc < start of | |
2215 | the first line, prev will not be set. */ | |
c906108c SS |
2216 | |
2217 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
2218 | If so, record this file, and its best line, as best so far. Don't |
2219 | save prev if it represents the end of a function (i.e. line number | |
2220 | 0) instead of a real line. */ | |
c906108c | 2221 | |
083ae935 | 2222 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
2223 | { |
2224 | best = prev; | |
2225 | best_symtab = s; | |
25d53da1 KB |
2226 | |
2227 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
2228 | if (best_end <= best->pc) | |
2229 | best_end = 0; | |
c906108c | 2230 | } |
25d53da1 KB |
2231 | |
2232 | /* If another line (denoted by ITEM) is in the linetable and its | |
2233 | PC is after BEST's PC, but before the current BEST_END, then | |
2234 | use ITEM's PC as the new best_end. */ | |
2235 | if (best && i < len && item->pc > best->pc | |
2236 | && (best_end == 0 || best_end > item->pc)) | |
2237 | best_end = item->pc; | |
c906108c SS |
2238 | } |
2239 | ||
2240 | if (!best_symtab) | |
2241 | { | |
e86e87f7 DJ |
2242 | /* If we didn't find any line number info, just return zeros. |
2243 | We used to return alt->line - 1 here, but that could be | |
2244 | anywhere; if we don't have line number info for this PC, | |
2245 | don't make some up. */ | |
2246 | val.pc = pc; | |
c906108c | 2247 | } |
e8717518 FF |
2248 | else if (best->line == 0) |
2249 | { | |
2250 | /* If our best fit is in a range of PC's for which no line | |
2251 | number info is available (line number is zero) then we didn't | |
c378eb4e | 2252 | find any valid line information. */ |
e8717518 FF |
2253 | val.pc = pc; |
2254 | } | |
c906108c SS |
2255 | else |
2256 | { | |
2257 | val.symtab = best_symtab; | |
2258 | val.line = best->line; | |
2259 | val.pc = best->pc; | |
2260 | if (best_end && (!alt || best_end < alt->pc)) | |
2261 | val.end = best_end; | |
2262 | else if (alt) | |
2263 | val.end = alt->pc; | |
2264 | else | |
2265 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
2266 | } | |
2267 | val.section = section; | |
2268 | return val; | |
2269 | } | |
2270 | ||
c378eb4e | 2271 | /* Backward compatibility (no section). */ |
c906108c SS |
2272 | |
2273 | struct symtab_and_line | |
fba45db2 | 2274 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 2275 | { |
714835d5 | 2276 | struct obj_section *section; |
c906108c SS |
2277 | |
2278 | section = find_pc_overlay (pc); | |
2279 | if (pc_in_unmapped_range (pc, section)) | |
2280 | pc = overlay_mapped_address (pc, section); | |
2281 | return find_pc_sect_line (pc, section, notcurrent); | |
2282 | } | |
c906108c | 2283 | \f |
c906108c SS |
2284 | /* Find line number LINE in any symtab whose name is the same as |
2285 | SYMTAB. | |
2286 | ||
2287 | If found, return the symtab that contains the linetable in which it was | |
2288 | found, set *INDEX to the index in the linetable of the best entry | |
2289 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
2290 | exact match. | |
2291 | ||
2292 | If not found, return NULL. */ | |
2293 | ||
50641945 | 2294 | struct symtab * |
433759f7 MS |
2295 | find_line_symtab (struct symtab *symtab, int line, |
2296 | int *index, int *exact_match) | |
c906108c | 2297 | { |
6f43c46f | 2298 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
2299 | |
2300 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
2301 | so far seen. */ | |
2302 | ||
2303 | int best_index; | |
2304 | struct linetable *best_linetable; | |
2305 | struct symtab *best_symtab; | |
2306 | ||
2307 | /* First try looking it up in the given symtab. */ | |
2308 | best_linetable = LINETABLE (symtab); | |
2309 | best_symtab = symtab; | |
f8eba3c6 | 2310 | best_index = find_line_common (best_linetable, line, &exact, 0); |
c906108c SS |
2311 | if (best_index < 0 || !exact) |
2312 | { | |
2313 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
2314 | another symtab with the same name. In the case of xcoff, |
2315 | multiple csects for one source file (produced by IBM's FORTRAN | |
2316 | compiler) produce multiple symtabs (this is unavoidable | |
2317 | assuming csects can be at arbitrary places in memory and that | |
2318 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
2319 | |
2320 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
2321 | or 0 if none has been seen so far. |
2322 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
2323 | int best; |
2324 | ||
2325 | struct objfile *objfile; | |
2326 | struct symtab *s; | |
2327 | ||
2328 | if (best_index >= 0) | |
2329 | best = best_linetable->item[best_index].line; | |
2330 | else | |
2331 | best = 0; | |
2332 | ||
ccefe4c4 | 2333 | ALL_OBJFILES (objfile) |
51432cca | 2334 | { |
ccefe4c4 TT |
2335 | if (objfile->sf) |
2336 | objfile->sf->qf->expand_symtabs_with_filename (objfile, | |
2337 | symtab->filename); | |
51432cca CES |
2338 | } |
2339 | ||
3ffc00b8 JB |
2340 | /* Get symbol full file name if possible. */ |
2341 | symtab_to_fullname (symtab); | |
2342 | ||
c906108c | 2343 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
2344 | { |
2345 | struct linetable *l; | |
2346 | int ind; | |
c906108c | 2347 | |
3ffc00b8 | 2348 | if (FILENAME_CMP (symtab->filename, s->filename) != 0) |
c5aa993b | 2349 | continue; |
3ffc00b8 JB |
2350 | if (symtab->fullname != NULL |
2351 | && symtab_to_fullname (s) != NULL | |
2352 | && FILENAME_CMP (symtab->fullname, s->fullname) != 0) | |
2353 | continue; | |
c5aa993b | 2354 | l = LINETABLE (s); |
f8eba3c6 | 2355 | ind = find_line_common (l, line, &exact, 0); |
c5aa993b JM |
2356 | if (ind >= 0) |
2357 | { | |
2358 | if (exact) | |
2359 | { | |
2360 | best_index = ind; | |
2361 | best_linetable = l; | |
2362 | best_symtab = s; | |
2363 | goto done; | |
2364 | } | |
2365 | if (best == 0 || l->item[ind].line < best) | |
2366 | { | |
2367 | best = l->item[ind].line; | |
2368 | best_index = ind; | |
2369 | best_linetable = l; | |
2370 | best_symtab = s; | |
2371 | } | |
2372 | } | |
2373 | } | |
c906108c | 2374 | } |
c5aa993b | 2375 | done: |
c906108c SS |
2376 | if (best_index < 0) |
2377 | return NULL; | |
2378 | ||
2379 | if (index) | |
2380 | *index = best_index; | |
2381 | if (exact_match) | |
2382 | *exact_match = exact; | |
2383 | ||
2384 | return best_symtab; | |
2385 | } | |
f8eba3c6 TT |
2386 | |
2387 | /* Given SYMTAB, returns all the PCs function in the symtab that | |
2388 | exactly match LINE. Returns NULL if there are no exact matches, | |
2389 | but updates BEST_ITEM in this case. */ | |
2390 | ||
2391 | VEC (CORE_ADDR) * | |
2392 | find_pcs_for_symtab_line (struct symtab *symtab, int line, | |
2393 | struct linetable_entry **best_item) | |
2394 | { | |
2395 | int start = 0, ix; | |
2396 | struct symbol *previous_function = NULL; | |
2397 | VEC (CORE_ADDR) *result = NULL; | |
2398 | ||
2399 | /* First, collect all the PCs that are at this line. */ | |
2400 | while (1) | |
2401 | { | |
2402 | int was_exact; | |
2403 | int idx; | |
2404 | ||
2405 | idx = find_line_common (LINETABLE (symtab), line, &was_exact, start); | |
2406 | if (idx < 0) | |
2407 | break; | |
2408 | ||
2409 | if (!was_exact) | |
2410 | { | |
2411 | struct linetable_entry *item = &LINETABLE (symtab)->item[idx]; | |
2412 | ||
2413 | if (*best_item == NULL || item->line < (*best_item)->line) | |
2414 | *best_item = item; | |
2415 | ||
2416 | break; | |
2417 | } | |
2418 | ||
2419 | VEC_safe_push (CORE_ADDR, result, LINETABLE (symtab)->item[idx].pc); | |
2420 | start = idx + 1; | |
2421 | } | |
2422 | ||
2423 | return result; | |
2424 | } | |
2425 | ||
c906108c SS |
2426 | \f |
2427 | /* Set the PC value for a given source file and line number and return true. | |
2428 | Returns zero for invalid line number (and sets the PC to 0). | |
2429 | The source file is specified with a struct symtab. */ | |
2430 | ||
2431 | int | |
fba45db2 | 2432 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
2433 | { |
2434 | struct linetable *l; | |
2435 | int ind; | |
2436 | ||
2437 | *pc = 0; | |
2438 | if (symtab == 0) | |
2439 | return 0; | |
2440 | ||
2441 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
2442 | if (symtab != NULL) | |
2443 | { | |
2444 | l = LINETABLE (symtab); | |
2445 | *pc = l->item[ind].pc; | |
2446 | return 1; | |
2447 | } | |
2448 | else | |
2449 | return 0; | |
2450 | } | |
2451 | ||
2452 | /* Find the range of pc values in a line. | |
2453 | Store the starting pc of the line into *STARTPTR | |
2454 | and the ending pc (start of next line) into *ENDPTR. | |
2455 | Returns 1 to indicate success. | |
2456 | Returns 0 if could not find the specified line. */ | |
2457 | ||
2458 | int | |
fba45db2 KB |
2459 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
2460 | CORE_ADDR *endptr) | |
c906108c SS |
2461 | { |
2462 | CORE_ADDR startaddr; | |
2463 | struct symtab_and_line found_sal; | |
2464 | ||
2465 | startaddr = sal.pc; | |
c5aa993b | 2466 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
2467 | return 0; |
2468 | ||
2469 | /* This whole function is based on address. For example, if line 10 has | |
2470 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
2471 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
2472 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
2473 | This also insures that we never give a range like "starts at 0x134 | |
2474 | and ends at 0x12c". */ | |
2475 | ||
2476 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
2477 | if (found_sal.line != sal.line) | |
2478 | { | |
2479 | /* The specified line (sal) has zero bytes. */ | |
2480 | *startptr = found_sal.pc; | |
2481 | *endptr = found_sal.pc; | |
2482 | } | |
2483 | else | |
2484 | { | |
2485 | *startptr = found_sal.pc; | |
2486 | *endptr = found_sal.end; | |
2487 | } | |
2488 | return 1; | |
2489 | } | |
2490 | ||
2491 | /* Given a line table and a line number, return the index into the line | |
2492 | table for the pc of the nearest line whose number is >= the specified one. | |
2493 | Return -1 if none is found. The value is >= 0 if it is an index. | |
f8eba3c6 | 2494 | START is the index at which to start searching the line table. |
c906108c SS |
2495 | |
2496 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
2497 | ||
2498 | static int | |
aa1ee363 | 2499 | find_line_common (struct linetable *l, int lineno, |
f8eba3c6 | 2500 | int *exact_match, int start) |
c906108c | 2501 | { |
52f0bd74 AC |
2502 | int i; |
2503 | int len; | |
c906108c SS |
2504 | |
2505 | /* BEST is the smallest linenumber > LINENO so far seen, | |
2506 | or 0 if none has been seen so far. | |
2507 | BEST_INDEX identifies the item for it. */ | |
2508 | ||
2509 | int best_index = -1; | |
2510 | int best = 0; | |
2511 | ||
b7589f7d DJ |
2512 | *exact_match = 0; |
2513 | ||
c906108c SS |
2514 | if (lineno <= 0) |
2515 | return -1; | |
2516 | if (l == 0) | |
2517 | return -1; | |
2518 | ||
2519 | len = l->nitems; | |
f8eba3c6 | 2520 | for (i = start; i < len; i++) |
c906108c | 2521 | { |
aa1ee363 | 2522 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
2523 | |
2524 | if (item->line == lineno) | |
2525 | { | |
2526 | /* Return the first (lowest address) entry which matches. */ | |
2527 | *exact_match = 1; | |
2528 | return i; | |
2529 | } | |
2530 | ||
2531 | if (item->line > lineno && (best == 0 || item->line < best)) | |
2532 | { | |
2533 | best = item->line; | |
2534 | best_index = i; | |
2535 | } | |
2536 | } | |
2537 | ||
2538 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
2539 | return best_index; |
2540 | } | |
2541 | ||
2542 | int | |
fba45db2 | 2543 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
2544 | { |
2545 | struct symtab_and_line sal; | |
433759f7 | 2546 | |
c906108c SS |
2547 | sal = find_pc_line (pc, 0); |
2548 | *startptr = sal.pc; | |
2549 | *endptr = sal.end; | |
2550 | return sal.symtab != 0; | |
2551 | } | |
2552 | ||
8c7a1ee8 EZ |
2553 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
2554 | address for that function that has an entry in SYMTAB's line info | |
2555 | table. If such an entry cannot be found, return FUNC_ADDR | |
2556 | unaltered. */ | |
2557 | CORE_ADDR | |
2558 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) | |
2559 | { | |
2560 | CORE_ADDR func_start, func_end; | |
2561 | struct linetable *l; | |
952a6d41 | 2562 | int i; |
8c7a1ee8 EZ |
2563 | |
2564 | /* Give up if this symbol has no lineinfo table. */ | |
2565 | l = LINETABLE (symtab); | |
2566 | if (l == NULL) | |
2567 | return func_addr; | |
2568 | ||
2569 | /* Get the range for the function's PC values, or give up if we | |
2570 | cannot, for some reason. */ | |
2571 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
2572 | return func_addr; | |
2573 | ||
2574 | /* Linetable entries are ordered by PC values, see the commentary in | |
2575 | symtab.h where `struct linetable' is defined. Thus, the first | |
2576 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
2577 | address we are looking for. */ | |
2578 | for (i = 0; i < l->nitems; i++) | |
2579 | { | |
2580 | struct linetable_entry *item = &(l->item[i]); | |
2581 | ||
2582 | /* Don't use line numbers of zero, they mark special entries in | |
2583 | the table. See the commentary on symtab.h before the | |
2584 | definition of struct linetable. */ | |
2585 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
2586 | return item->pc; | |
2587 | } | |
2588 | ||
2589 | return func_addr; | |
2590 | } | |
2591 | ||
c906108c SS |
2592 | /* Given a function symbol SYM, find the symtab and line for the start |
2593 | of the function. | |
2594 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
2595 | of real code inside the function. */ | |
2596 | ||
50641945 | 2597 | struct symtab_and_line |
fba45db2 | 2598 | find_function_start_sal (struct symbol *sym, int funfirstline) |
c906108c | 2599 | { |
059acae7 UW |
2600 | struct symtab_and_line sal; |
2601 | ||
2602 | fixup_symbol_section (sym, NULL); | |
2603 | sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), | |
2604 | SYMBOL_OBJ_SECTION (sym), 0); | |
2605 | ||
86da934b UW |
2606 | /* We always should have a line for the function start address. |
2607 | If we don't, something is odd. Create a plain SAL refering | |
2608 | just the PC and hope that skip_prologue_sal (if requested) | |
2609 | can find a line number for after the prologue. */ | |
2610 | if (sal.pc < BLOCK_START (SYMBOL_BLOCK_VALUE (sym))) | |
2611 | { | |
2612 | init_sal (&sal); | |
2613 | sal.pspace = current_program_space; | |
2614 | sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
2615 | sal.section = SYMBOL_OBJ_SECTION (sym); | |
2616 | } | |
2617 | ||
059acae7 UW |
2618 | if (funfirstline) |
2619 | skip_prologue_sal (&sal); | |
bccdca4a | 2620 | |
059acae7 UW |
2621 | return sal; |
2622 | } | |
2623 | ||
2624 | /* Adjust SAL to the first instruction past the function prologue. | |
2625 | If the PC was explicitly specified, the SAL is not changed. | |
2626 | If the line number was explicitly specified, at most the SAL's PC | |
2627 | is updated. If SAL is already past the prologue, then do nothing. */ | |
2628 | void | |
2629 | skip_prologue_sal (struct symtab_and_line *sal) | |
2630 | { | |
2631 | struct symbol *sym; | |
2632 | struct symtab_and_line start_sal; | |
2633 | struct cleanup *old_chain; | |
8be455d7 | 2634 | CORE_ADDR pc, saved_pc; |
059acae7 UW |
2635 | struct obj_section *section; |
2636 | const char *name; | |
2637 | struct objfile *objfile; | |
2638 | struct gdbarch *gdbarch; | |
edb3359d | 2639 | struct block *b, *function_block; |
8be455d7 | 2640 | int force_skip, skip; |
c906108c | 2641 | |
059acae7 UW |
2642 | /* Do not change the SAL is PC was specified explicitly. */ |
2643 | if (sal->explicit_pc) | |
2644 | return; | |
6c95b8df PA |
2645 | |
2646 | old_chain = save_current_space_and_thread (); | |
059acae7 | 2647 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 2648 | |
059acae7 UW |
2649 | sym = find_pc_sect_function (sal->pc, sal->section); |
2650 | if (sym != NULL) | |
bccdca4a | 2651 | { |
059acae7 UW |
2652 | fixup_symbol_section (sym, NULL); |
2653 | ||
2654 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
2655 | section = SYMBOL_OBJ_SECTION (sym); | |
2656 | name = SYMBOL_LINKAGE_NAME (sym); | |
2657 | objfile = SYMBOL_SYMTAB (sym)->objfile; | |
c906108c | 2658 | } |
059acae7 UW |
2659 | else |
2660 | { | |
2661 | struct minimal_symbol *msymbol | |
2662 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
433759f7 | 2663 | |
059acae7 UW |
2664 | if (msymbol == NULL) |
2665 | { | |
2666 | do_cleanups (old_chain); | |
2667 | return; | |
2668 | } | |
2669 | ||
2670 | pc = SYMBOL_VALUE_ADDRESS (msymbol); | |
2671 | section = SYMBOL_OBJ_SECTION (msymbol); | |
2672 | name = SYMBOL_LINKAGE_NAME (msymbol); | |
2673 | objfile = msymbol_objfile (msymbol); | |
2674 | } | |
2675 | ||
2676 | gdbarch = get_objfile_arch (objfile); | |
2677 | ||
8be455d7 JK |
2678 | /* Process the prologue in two passes. In the first pass try to skip the |
2679 | prologue (SKIP is true) and verify there is a real need for it (indicated | |
2680 | by FORCE_SKIP). If no such reason was found run a second pass where the | |
2681 | prologue is not skipped (SKIP is false). */ | |
059acae7 | 2682 | |
8be455d7 JK |
2683 | skip = 1; |
2684 | force_skip = 1; | |
059acae7 | 2685 | |
8be455d7 JK |
2686 | /* Be conservative - allow direct PC (without skipping prologue) only if we |
2687 | have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not | |
2688 | have to be set by the caller so we use SYM instead. */ | |
2689 | if (sym && SYMBOL_SYMTAB (sym)->locations_valid) | |
2690 | force_skip = 0; | |
059acae7 | 2691 | |
8be455d7 JK |
2692 | saved_pc = pc; |
2693 | do | |
c906108c | 2694 | { |
8be455d7 | 2695 | pc = saved_pc; |
4309257c | 2696 | |
8be455d7 JK |
2697 | /* If the function is in an unmapped overlay, use its unmapped LMA address, |
2698 | so that gdbarch_skip_prologue has something unique to work on. */ | |
2699 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
2700 | pc = overlay_unmapped_address (pc, section); | |
2701 | ||
2702 | /* Skip "first line" of function (which is actually its prologue). */ | |
2703 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
2704 | if (skip) | |
2705 | pc = gdbarch_skip_prologue (gdbarch, pc); | |
2706 | ||
2707 | /* For overlays, map pc back into its mapped VMA range. */ | |
2708 | pc = overlay_mapped_address (pc, section); | |
2709 | ||
2710 | /* Calculate line number. */ | |
059acae7 | 2711 | start_sal = find_pc_sect_line (pc, section, 0); |
8be455d7 JK |
2712 | |
2713 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next | |
2714 | line is still part of the same function. */ | |
2715 | if (skip && start_sal.pc != pc | |
b1d96efd JK |
2716 | && (sym ? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end |
2717 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
8be455d7 JK |
2718 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section) |
2719 | == lookup_minimal_symbol_by_pc_section (pc, section)))) | |
2720 | { | |
2721 | /* First pc of next line */ | |
2722 | pc = start_sal.end; | |
2723 | /* Recalculate the line number (might not be N+1). */ | |
2724 | start_sal = find_pc_sect_line (pc, section, 0); | |
2725 | } | |
2726 | ||
2727 | /* On targets with executable formats that don't have a concept of | |
2728 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
2729 | to `__main' in `main' between the prologue and before user | |
2730 | code. */ | |
2731 | if (gdbarch_skip_main_prologue_p (gdbarch) | |
2732 | && name && strcmp (name, "main") == 0) | |
2733 | { | |
2734 | pc = gdbarch_skip_main_prologue (gdbarch, pc); | |
2735 | /* Recalculate the line number (might not be N+1). */ | |
2736 | start_sal = find_pc_sect_line (pc, section, 0); | |
2737 | force_skip = 1; | |
2738 | } | |
4309257c | 2739 | } |
8be455d7 | 2740 | while (!force_skip && skip--); |
4309257c | 2741 | |
8c7a1ee8 EZ |
2742 | /* If we still don't have a valid source line, try to find the first |
2743 | PC in the lineinfo table that belongs to the same function. This | |
2744 | happens with COFF debug info, which does not seem to have an | |
2745 | entry in lineinfo table for the code after the prologue which has | |
2746 | no direct relation to source. For example, this was found to be | |
2747 | the case with the DJGPP target using "gcc -gcoff" when the | |
2748 | compiler inserted code after the prologue to make sure the stack | |
2749 | is aligned. */ | |
8be455d7 | 2750 | if (!force_skip && sym && start_sal.symtab == NULL) |
8c7a1ee8 EZ |
2751 | { |
2752 | pc = skip_prologue_using_lineinfo (pc, SYMBOL_SYMTAB (sym)); | |
2753 | /* Recalculate the line number. */ | |
059acae7 | 2754 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
2755 | } |
2756 | ||
059acae7 UW |
2757 | do_cleanups (old_chain); |
2758 | ||
2759 | /* If we're already past the prologue, leave SAL unchanged. Otherwise | |
2760 | forward SAL to the end of the prologue. */ | |
2761 | if (sal->pc >= pc) | |
2762 | return; | |
2763 | ||
2764 | sal->pc = pc; | |
2765 | sal->section = section; | |
2766 | ||
2767 | /* Unless the explicit_line flag was set, update the SAL line | |
2768 | and symtab to correspond to the modified PC location. */ | |
2769 | if (sal->explicit_line) | |
2770 | return; | |
2771 | ||
2772 | sal->symtab = start_sal.symtab; | |
2773 | sal->line = start_sal.line; | |
2774 | sal->end = start_sal.end; | |
c906108c | 2775 | |
edb3359d DJ |
2776 | /* Check if we are now inside an inlined function. If we can, |
2777 | use the call site of the function instead. */ | |
059acae7 | 2778 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
2779 | function_block = NULL; |
2780 | while (b != NULL) | |
2781 | { | |
2782 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
2783 | function_block = b; | |
2784 | else if (BLOCK_FUNCTION (b) != NULL) | |
2785 | break; | |
2786 | b = BLOCK_SUPERBLOCK (b); | |
2787 | } | |
2788 | if (function_block != NULL | |
2789 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
2790 | { | |
059acae7 UW |
2791 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
2792 | sal->symtab = SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block)); | |
edb3359d | 2793 | } |
c906108c | 2794 | } |
50641945 | 2795 | |
c906108c SS |
2796 | /* If P is of the form "operator[ \t]+..." where `...' is |
2797 | some legitimate operator text, return a pointer to the | |
2798 | beginning of the substring of the operator text. | |
2799 | Otherwise, return "". */ | |
fc9f3a69 | 2800 | static char * |
fba45db2 | 2801 | operator_chars (char *p, char **end) |
c906108c SS |
2802 | { |
2803 | *end = ""; | |
2804 | if (strncmp (p, "operator", 8)) | |
2805 | return *end; | |
2806 | p += 8; | |
2807 | ||
2808 | /* Don't get faked out by `operator' being part of a longer | |
2809 | identifier. */ | |
c5aa993b | 2810 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
2811 | return *end; |
2812 | ||
2813 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
2814 | while (*p == ' ' || *p == '\t') | |
2815 | p++; | |
2816 | ||
c378eb4e | 2817 | /* Recognize 'operator TYPENAME'. */ |
c906108c | 2818 | |
c5aa993b | 2819 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 2820 | { |
aa1ee363 | 2821 | char *q = p + 1; |
433759f7 | 2822 | |
c5aa993b | 2823 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
2824 | q++; |
2825 | *end = q; | |
2826 | return p; | |
2827 | } | |
2828 | ||
53e8ad3d MS |
2829 | while (*p) |
2830 | switch (*p) | |
2831 | { | |
2832 | case '\\': /* regexp quoting */ | |
2833 | if (p[1] == '*') | |
2834 | { | |
3e43a32a | 2835 | if (p[2] == '=') /* 'operator\*=' */ |
53e8ad3d MS |
2836 | *end = p + 3; |
2837 | else /* 'operator\*' */ | |
2838 | *end = p + 2; | |
2839 | return p; | |
2840 | } | |
2841 | else if (p[1] == '[') | |
2842 | { | |
2843 | if (p[2] == ']') | |
3e43a32a MS |
2844 | error (_("mismatched quoting on brackets, " |
2845 | "try 'operator\\[\\]'")); | |
53e8ad3d MS |
2846 | else if (p[2] == '\\' && p[3] == ']') |
2847 | { | |
2848 | *end = p + 4; /* 'operator\[\]' */ | |
2849 | return p; | |
2850 | } | |
2851 | else | |
8a3fe4f8 | 2852 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 2853 | } |
9af17804 | 2854 | else |
53e8ad3d | 2855 | { |
c378eb4e | 2856 | /* Gratuitous qoute: skip it and move on. */ |
53e8ad3d MS |
2857 | p++; |
2858 | continue; | |
2859 | } | |
2860 | break; | |
2861 | case '!': | |
2862 | case '=': | |
2863 | case '*': | |
2864 | case '/': | |
2865 | case '%': | |
2866 | case '^': | |
2867 | if (p[1] == '=') | |
2868 | *end = p + 2; | |
2869 | else | |
2870 | *end = p + 1; | |
2871 | return p; | |
2872 | case '<': | |
2873 | case '>': | |
2874 | case '+': | |
2875 | case '-': | |
2876 | case '&': | |
2877 | case '|': | |
2878 | if (p[0] == '-' && p[1] == '>') | |
2879 | { | |
c378eb4e | 2880 | /* Struct pointer member operator 'operator->'. */ |
53e8ad3d MS |
2881 | if (p[2] == '*') |
2882 | { | |
2883 | *end = p + 3; /* 'operator->*' */ | |
2884 | return p; | |
2885 | } | |
2886 | else if (p[2] == '\\') | |
2887 | { | |
2888 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
2889 | return p; | |
2890 | } | |
2891 | else | |
2892 | { | |
2893 | *end = p + 2; /* 'operator->' */ | |
2894 | return p; | |
2895 | } | |
2896 | } | |
2897 | if (p[1] == '=' || p[1] == p[0]) | |
2898 | *end = p + 2; | |
2899 | else | |
2900 | *end = p + 1; | |
2901 | return p; | |
2902 | case '~': | |
2903 | case ',': | |
c5aa993b | 2904 | *end = p + 1; |
53e8ad3d MS |
2905 | return p; |
2906 | case '(': | |
2907 | if (p[1] != ')') | |
3e43a32a MS |
2908 | error (_("`operator ()' must be specified " |
2909 | "without whitespace in `()'")); | |
c5aa993b | 2910 | *end = p + 2; |
53e8ad3d MS |
2911 | return p; |
2912 | case '?': | |
2913 | if (p[1] != ':') | |
3e43a32a MS |
2914 | error (_("`operator ?:' must be specified " |
2915 | "without whitespace in `?:'")); | |
53e8ad3d MS |
2916 | *end = p + 2; |
2917 | return p; | |
2918 | case '[': | |
2919 | if (p[1] != ']') | |
3e43a32a MS |
2920 | error (_("`operator []' must be specified " |
2921 | "without whitespace in `[]'")); | |
53e8ad3d MS |
2922 | *end = p + 2; |
2923 | return p; | |
2924 | default: | |
8a3fe4f8 | 2925 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
2926 | break; |
2927 | } | |
2928 | ||
c906108c SS |
2929 | *end = ""; |
2930 | return *end; | |
2931 | } | |
c906108c | 2932 | \f |
c5aa993b | 2933 | |
c94fdfd0 EZ |
2934 | /* If FILE is not already in the table of files, return zero; |
2935 | otherwise return non-zero. Optionally add FILE to the table if ADD | |
2936 | is non-zero. If *FIRST is non-zero, forget the old table | |
2937 | contents. */ | |
2938 | static int | |
2939 | filename_seen (const char *file, int add, int *first) | |
c906108c | 2940 | { |
c94fdfd0 EZ |
2941 | /* Table of files seen so far. */ |
2942 | static const char **tab = NULL; | |
c906108c SS |
2943 | /* Allocated size of tab in elements. |
2944 | Start with one 256-byte block (when using GNU malloc.c). | |
2945 | 24 is the malloc overhead when range checking is in effect. */ | |
2946 | static int tab_alloc_size = (256 - 24) / sizeof (char *); | |
2947 | /* Current size of tab in elements. */ | |
2948 | static int tab_cur_size; | |
c94fdfd0 | 2949 | const char **p; |
c906108c SS |
2950 | |
2951 | if (*first) | |
2952 | { | |
2953 | if (tab == NULL) | |
c94fdfd0 | 2954 | tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab)); |
c906108c SS |
2955 | tab_cur_size = 0; |
2956 | } | |
2957 | ||
c94fdfd0 | 2958 | /* Is FILE in tab? */ |
c906108c | 2959 | for (p = tab; p < tab + tab_cur_size; p++) |
0ba1096a | 2960 | if (filename_cmp (*p, file) == 0) |
c94fdfd0 EZ |
2961 | return 1; |
2962 | ||
2963 | /* No; maybe add it to tab. */ | |
2964 | if (add) | |
c906108c | 2965 | { |
c94fdfd0 EZ |
2966 | if (tab_cur_size == tab_alloc_size) |
2967 | { | |
2968 | tab_alloc_size *= 2; | |
2969 | tab = (const char **) xrealloc ((char *) tab, | |
2970 | tab_alloc_size * sizeof (*tab)); | |
2971 | } | |
2972 | tab[tab_cur_size++] = file; | |
c906108c | 2973 | } |
c906108c | 2974 | |
c94fdfd0 EZ |
2975 | return 0; |
2976 | } | |
2977 | ||
2978 | /* Slave routine for sources_info. Force line breaks at ,'s. | |
2979 | NAME is the name to print and *FIRST is nonzero if this is the first | |
2980 | name printed. Set *FIRST to zero. */ | |
2981 | static void | |
d092d1a2 | 2982 | output_source_filename (const char *name, int *first) |
c94fdfd0 EZ |
2983 | { |
2984 | /* Since a single source file can result in several partial symbol | |
2985 | tables, we need to avoid printing it more than once. Note: if | |
2986 | some of the psymtabs are read in and some are not, it gets | |
2987 | printed both under "Source files for which symbols have been | |
2988 | read" and "Source files for which symbols will be read in on | |
2989 | demand". I consider this a reasonable way to deal with the | |
2990 | situation. I'm not sure whether this can also happen for | |
2991 | symtabs; it doesn't hurt to check. */ | |
2992 | ||
2993 | /* Was NAME already seen? */ | |
2994 | if (filename_seen (name, 1, first)) | |
2995 | { | |
2996 | /* Yes; don't print it again. */ | |
2997 | return; | |
2998 | } | |
2999 | /* No; print it and reset *FIRST. */ | |
c906108c SS |
3000 | if (*first) |
3001 | { | |
3002 | *first = 0; | |
3003 | } | |
3004 | else | |
3005 | { | |
3006 | printf_filtered (", "); | |
3007 | } | |
3008 | ||
3009 | wrap_here (""); | |
3010 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 3011 | } |
c906108c | 3012 | |
ccefe4c4 TT |
3013 | /* A callback for map_partial_symbol_filenames. */ |
3014 | static void | |
533a737e | 3015 | output_partial_symbol_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
3016 | void *data) |
3017 | { | |
3018 | output_source_filename (fullname ? fullname : filename, data); | |
3019 | } | |
3020 | ||
c906108c | 3021 | static void |
fba45db2 | 3022 | sources_info (char *ignore, int from_tty) |
c906108c | 3023 | { |
52f0bd74 | 3024 | struct symtab *s; |
52f0bd74 | 3025 | struct objfile *objfile; |
c906108c | 3026 | int first; |
c5aa993b | 3027 | |
c906108c SS |
3028 | if (!have_full_symbols () && !have_partial_symbols ()) |
3029 | { | |
8a3fe4f8 | 3030 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 3031 | } |
c5aa993b | 3032 | |
c906108c SS |
3033 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
3034 | ||
3035 | first = 1; | |
3036 | ALL_SYMTABS (objfile, s) | |
c5aa993b | 3037 | { |
d092d1a2 | 3038 | const char *fullname = symtab_to_fullname (s); |
433759f7 | 3039 | |
d092d1a2 | 3040 | output_source_filename (fullname ? fullname : s->filename, &first); |
c5aa993b | 3041 | } |
c906108c | 3042 | printf_filtered ("\n\n"); |
c5aa993b | 3043 | |
3e43a32a MS |
3044 | printf_filtered ("Source files for which symbols " |
3045 | "will be read in on demand:\n\n"); | |
c906108c SS |
3046 | |
3047 | first = 1; | |
74e2f255 DE |
3048 | map_partial_symbol_filenames (output_partial_symbol_filename, &first, |
3049 | 1 /*need_fullname*/); | |
c906108c SS |
3050 | printf_filtered ("\n"); |
3051 | } | |
3052 | ||
3053 | static int | |
ccefe4c4 | 3054 | file_matches (const char *file, char *files[], int nfiles) |
c906108c SS |
3055 | { |
3056 | int i; | |
3057 | ||
3058 | if (file != NULL && nfiles != 0) | |
3059 | { | |
3060 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 3061 | { |
0ba1096a | 3062 | if (filename_cmp (files[i], lbasename (file)) == 0) |
c5aa993b JM |
3063 | return 1; |
3064 | } | |
c906108c SS |
3065 | } |
3066 | else if (nfiles == 0) | |
3067 | return 1; | |
3068 | return 0; | |
3069 | } | |
3070 | ||
c378eb4e | 3071 | /* Free any memory associated with a search. */ |
c906108c | 3072 | void |
fba45db2 | 3073 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
3074 | { |
3075 | struct symbol_search *p; | |
3076 | struct symbol_search *next; | |
3077 | ||
3078 | for (p = symbols; p != NULL; p = next) | |
3079 | { | |
3080 | next = p->next; | |
b8c9b27d | 3081 | xfree (p); |
c906108c SS |
3082 | } |
3083 | } | |
3084 | ||
5bd98722 AC |
3085 | static void |
3086 | do_free_search_symbols_cleanup (void *symbols) | |
3087 | { | |
3088 | free_search_symbols (symbols); | |
3089 | } | |
3090 | ||
3091 | struct cleanup * | |
3092 | make_cleanup_free_search_symbols (struct symbol_search *symbols) | |
3093 | { | |
3094 | return make_cleanup (do_free_search_symbols_cleanup, symbols); | |
3095 | } | |
3096 | ||
434d2d4f DJ |
3097 | /* Helper function for sort_search_symbols and qsort. Can only |
3098 | sort symbols, not minimal symbols. */ | |
3099 | static int | |
3100 | compare_search_syms (const void *sa, const void *sb) | |
3101 | { | |
3102 | struct symbol_search **sym_a = (struct symbol_search **) sa; | |
3103 | struct symbol_search **sym_b = (struct symbol_search **) sb; | |
3104 | ||
de5ad195 DC |
3105 | return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol), |
3106 | SYMBOL_PRINT_NAME ((*sym_b)->symbol)); | |
434d2d4f DJ |
3107 | } |
3108 | ||
3109 | /* Sort the ``nfound'' symbols in the list after prevtail. Leave | |
3110 | prevtail where it is, but update its next pointer to point to | |
3111 | the first of the sorted symbols. */ | |
3112 | static struct symbol_search * | |
3113 | sort_search_symbols (struct symbol_search *prevtail, int nfound) | |
3114 | { | |
3115 | struct symbol_search **symbols, *symp, *old_next; | |
3116 | int i; | |
3117 | ||
3118 | symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *) | |
3119 | * nfound); | |
3120 | symp = prevtail->next; | |
3121 | for (i = 0; i < nfound; i++) | |
3122 | { | |
3123 | symbols[i] = symp; | |
3124 | symp = symp->next; | |
3125 | } | |
3126 | /* Generally NULL. */ | |
3127 | old_next = symp; | |
3128 | ||
3129 | qsort (symbols, nfound, sizeof (struct symbol_search *), | |
3130 | compare_search_syms); | |
3131 | ||
3132 | symp = prevtail; | |
3133 | for (i = 0; i < nfound; i++) | |
3134 | { | |
3135 | symp->next = symbols[i]; | |
3136 | symp = symp->next; | |
3137 | } | |
3138 | symp->next = old_next; | |
3139 | ||
8ed32cc0 | 3140 | xfree (symbols); |
434d2d4f DJ |
3141 | return symp; |
3142 | } | |
5bd98722 | 3143 | |
ccefe4c4 TT |
3144 | /* An object of this type is passed as the user_data to the |
3145 | expand_symtabs_matching method. */ | |
3146 | struct search_symbols_data | |
3147 | { | |
3148 | int nfiles; | |
3149 | char **files; | |
681bf369 JK |
3150 | |
3151 | /* It is true if PREG contains valid data, false otherwise. */ | |
3152 | unsigned preg_p : 1; | |
3153 | regex_t preg; | |
ccefe4c4 TT |
3154 | }; |
3155 | ||
3156 | /* A callback for expand_symtabs_matching. */ | |
3157 | static int | |
3158 | search_symbols_file_matches (const char *filename, void *user_data) | |
3159 | { | |
3160 | struct search_symbols_data *data = user_data; | |
433759f7 | 3161 | |
ccefe4c4 TT |
3162 | return file_matches (filename, data->files, data->nfiles); |
3163 | } | |
3164 | ||
3165 | /* A callback for expand_symtabs_matching. */ | |
3166 | static int | |
f8eba3c6 TT |
3167 | search_symbols_name_matches (const struct language_defn *language, |
3168 | const char *symname, void *user_data) | |
ccefe4c4 TT |
3169 | { |
3170 | struct search_symbols_data *data = user_data; | |
433759f7 | 3171 | |
681bf369 | 3172 | return !data->preg_p || regexec (&data->preg, symname, 0, NULL, 0) == 0; |
ccefe4c4 TT |
3173 | } |
3174 | ||
c906108c SS |
3175 | /* Search the symbol table for matches to the regular expression REGEXP, |
3176 | returning the results in *MATCHES. | |
3177 | ||
3178 | Only symbols of KIND are searched: | |
e8930875 JK |
3179 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
3180 | and constants (enums) | |
176620f1 EZ |
3181 | FUNCTIONS_DOMAIN - search all functions |
3182 | TYPES_DOMAIN - search all type names | |
7b08b9eb | 3183 | ALL_DOMAIN - an internal error for this function |
c906108c SS |
3184 | |
3185 | free_search_symbols should be called when *MATCHES is no longer needed. | |
434d2d4f DJ |
3186 | |
3187 | The results are sorted locally; each symtab's global and static blocks are | |
c378eb4e MS |
3188 | separately alphabetized. */ |
3189 | ||
c906108c | 3190 | void |
8903c50d TT |
3191 | search_symbols (char *regexp, enum search_domain kind, |
3192 | int nfiles, char *files[], | |
fd118b61 | 3193 | struct symbol_search **matches) |
c906108c | 3194 | { |
52f0bd74 | 3195 | struct symtab *s; |
52f0bd74 | 3196 | struct blockvector *bv; |
52f0bd74 AC |
3197 | struct block *b; |
3198 | int i = 0; | |
de4f826b | 3199 | struct dict_iterator iter; |
52f0bd74 | 3200 | struct symbol *sym; |
c906108c SS |
3201 | struct objfile *objfile; |
3202 | struct minimal_symbol *msymbol; | |
3203 | char *val; | |
3204 | int found_misc = 0; | |
bc043ef3 | 3205 | static const enum minimal_symbol_type types[] |
e8930875 | 3206 | = {mst_data, mst_text, mst_abs}; |
bc043ef3 | 3207 | static const enum minimal_symbol_type types2[] |
e8930875 | 3208 | = {mst_bss, mst_file_text, mst_abs}; |
bc043ef3 | 3209 | static const enum minimal_symbol_type types3[] |
e8930875 | 3210 | = {mst_file_data, mst_solib_trampoline, mst_abs}; |
bc043ef3 | 3211 | static const enum minimal_symbol_type types4[] |
e8930875 | 3212 | = {mst_file_bss, mst_text_gnu_ifunc, mst_abs}; |
c906108c SS |
3213 | enum minimal_symbol_type ourtype; |
3214 | enum minimal_symbol_type ourtype2; | |
3215 | enum minimal_symbol_type ourtype3; | |
3216 | enum minimal_symbol_type ourtype4; | |
3217 | struct symbol_search *sr; | |
3218 | struct symbol_search *psr; | |
3219 | struct symbol_search *tail; | |
ccefe4c4 | 3220 | struct search_symbols_data datum; |
c906108c | 3221 | |
681bf369 JK |
3222 | /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current |
3223 | CLEANUP_CHAIN is freed only in the case of an error. */ | |
3224 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
3225 | struct cleanup *retval_chain; | |
3226 | ||
e8930875 JK |
3227 | gdb_assert (kind <= TYPES_DOMAIN); |
3228 | ||
8903c50d TT |
3229 | ourtype = types[kind]; |
3230 | ourtype2 = types2[kind]; | |
3231 | ourtype3 = types3[kind]; | |
3232 | ourtype4 = types4[kind]; | |
c906108c SS |
3233 | |
3234 | sr = *matches = NULL; | |
3235 | tail = NULL; | |
681bf369 | 3236 | datum.preg_p = 0; |
c906108c SS |
3237 | |
3238 | if (regexp != NULL) | |
3239 | { | |
3240 | /* Make sure spacing is right for C++ operators. | |
3241 | This is just a courtesy to make the matching less sensitive | |
3242 | to how many spaces the user leaves between 'operator' | |
c378eb4e | 3243 | and <TYPENAME> or <OPERATOR>. */ |
c906108c SS |
3244 | char *opend; |
3245 | char *opname = operator_chars (regexp, &opend); | |
681bf369 | 3246 | int errcode; |
433759f7 | 3247 | |
c906108c | 3248 | if (*opname) |
c5aa993b | 3249 | { |
3e43a32a MS |
3250 | int fix = -1; /* -1 means ok; otherwise number of |
3251 | spaces needed. */ | |
433759f7 | 3252 | |
c5aa993b JM |
3253 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
3254 | { | |
c378eb4e | 3255 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
c5aa993b JM |
3256 | if (opname[-1] != ' ' || opname[-2] == ' ') |
3257 | fix = 1; | |
3258 | } | |
3259 | else | |
3260 | { | |
c378eb4e | 3261 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
c5aa993b JM |
3262 | if (opname[-1] == ' ') |
3263 | fix = 0; | |
3264 | } | |
c378eb4e | 3265 | /* If wrong number of spaces, fix it. */ |
c5aa993b JM |
3266 | if (fix >= 0) |
3267 | { | |
045f55a6 | 3268 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
433759f7 | 3269 | |
c5aa993b JM |
3270 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
3271 | regexp = tmp; | |
3272 | } | |
3273 | } | |
3274 | ||
559a7a62 JK |
3275 | errcode = regcomp (&datum.preg, regexp, |
3276 | REG_NOSUB | (case_sensitivity == case_sensitive_off | |
3277 | ? REG_ICASE : 0)); | |
681bf369 JK |
3278 | if (errcode != 0) |
3279 | { | |
3280 | char *err = get_regcomp_error (errcode, &datum.preg); | |
3281 | ||
3282 | make_cleanup (xfree, err); | |
3283 | error (_("Invalid regexp (%s): %s"), err, regexp); | |
3284 | } | |
3285 | datum.preg_p = 1; | |
3286 | make_regfree_cleanup (&datum.preg); | |
c906108c SS |
3287 | } |
3288 | ||
3289 | /* Search through the partial symtabs *first* for all symbols | |
3290 | matching the regexp. That way we don't have to reproduce all of | |
c378eb4e | 3291 | the machinery below. */ |
c906108c | 3292 | |
ccefe4c4 TT |
3293 | datum.nfiles = nfiles; |
3294 | datum.files = files; | |
ccefe4c4 | 3295 | ALL_OBJFILES (objfile) |
c5aa993b | 3296 | { |
ccefe4c4 TT |
3297 | if (objfile->sf) |
3298 | objfile->sf->qf->expand_symtabs_matching (objfile, | |
3299 | search_symbols_file_matches, | |
3300 | search_symbols_name_matches, | |
3301 | kind, | |
3302 | &datum); | |
c5aa993b | 3303 | } |
c906108c | 3304 | |
681bf369 JK |
3305 | retval_chain = old_chain; |
3306 | ||
c906108c SS |
3307 | /* Here, we search through the minimal symbol tables for functions |
3308 | and variables that match, and force their symbols to be read. | |
3309 | This is in particular necessary for demangled variable names, | |
3310 | which are no longer put into the partial symbol tables. | |
3311 | The symbol will then be found during the scan of symtabs below. | |
3312 | ||
3313 | For functions, find_pc_symtab should succeed if we have debug info | |
3314 | for the function, for variables we have to call lookup_symbol | |
3315 | to determine if the variable has debug info. | |
3316 | If the lookup fails, set found_misc so that we will rescan to print | |
c378eb4e | 3317 | any matching symbols without debug info. */ |
c906108c | 3318 | |
176620f1 | 3319 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
3320 | { |
3321 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 3322 | { |
89295b4d PP |
3323 | QUIT; |
3324 | ||
c5aa993b JM |
3325 | if (MSYMBOL_TYPE (msymbol) == ourtype || |
3326 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3327 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3328 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3329 | { | |
681bf369 JK |
3330 | if (!datum.preg_p |
3331 | || regexec (&datum.preg, SYMBOL_NATURAL_NAME (msymbol), 0, | |
3332 | NULL, 0) == 0) | |
c5aa993b JM |
3333 | { |
3334 | if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) | |
3335 | { | |
b1262a02 DC |
3336 | /* FIXME: carlton/2003-02-04: Given that the |
3337 | semantics of lookup_symbol keeps on changing | |
3338 | slightly, it would be a nice idea if we had a | |
3339 | function lookup_symbol_minsym that found the | |
3340 | symbol associated to a given minimal symbol (if | |
3341 | any). */ | |
176620f1 | 3342 | if (kind == FUNCTIONS_DOMAIN |
2335f48e | 3343 | || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
b1262a02 | 3344 | (struct block *) NULL, |
2570f2b7 | 3345 | VAR_DOMAIN, 0) |
53c5240f | 3346 | == NULL) |
b1262a02 | 3347 | found_misc = 1; |
c5aa993b JM |
3348 | } |
3349 | } | |
3350 | } | |
3351 | } | |
c906108c SS |
3352 | } |
3353 | ||
11309657 | 3354 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3355 | { |
3356 | bv = BLOCKVECTOR (s); | |
c5aa993b JM |
3357 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
3358 | { | |
434d2d4f DJ |
3359 | struct symbol_search *prevtail = tail; |
3360 | int nfound = 0; | |
433759f7 | 3361 | |
c5aa993b | 3362 | b = BLOCKVECTOR_BLOCK (bv, i); |
de4f826b | 3363 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3364 | { |
cb1df416 | 3365 | struct symtab *real_symtab = SYMBOL_SYMTAB (sym); |
433759f7 | 3366 | |
c5aa993b | 3367 | QUIT; |
cb1df416 DJ |
3368 | |
3369 | if (file_matches (real_symtab->filename, files, nfiles) | |
681bf369 JK |
3370 | && ((!datum.preg_p |
3371 | || regexec (&datum.preg, SYMBOL_NATURAL_NAME (sym), 0, | |
3372 | NULL, 0) == 0) | |
254e6b9e DE |
3373 | && ((kind == VARIABLES_DOMAIN |
3374 | && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
0fe7935b | 3375 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED |
c5aa993b | 3376 | && SYMBOL_CLASS (sym) != LOC_BLOCK |
254e6b9e DE |
3377 | /* LOC_CONST can be used for more than just enums, |
3378 | e.g., c++ static const members. | |
3379 | We only want to skip enums here. */ | |
3380 | && !(SYMBOL_CLASS (sym) == LOC_CONST | |
3e43a32a MS |
3381 | && TYPE_CODE (SYMBOL_TYPE (sym)) |
3382 | == TYPE_CODE_ENUM)) | |
3383 | || (kind == FUNCTIONS_DOMAIN | |
3384 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
3385 | || (kind == TYPES_DOMAIN | |
3386 | && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) | |
c5aa993b JM |
3387 | { |
3388 | /* match */ | |
3e43a32a MS |
3389 | psr = (struct symbol_search *) |
3390 | xmalloc (sizeof (struct symbol_search)); | |
c5aa993b | 3391 | psr->block = i; |
cb1df416 | 3392 | psr->symtab = real_symtab; |
c5aa993b JM |
3393 | psr->symbol = sym; |
3394 | psr->msymbol = NULL; | |
3395 | psr->next = NULL; | |
3396 | if (tail == NULL) | |
434d2d4f | 3397 | sr = psr; |
c5aa993b JM |
3398 | else |
3399 | tail->next = psr; | |
3400 | tail = psr; | |
434d2d4f DJ |
3401 | nfound ++; |
3402 | } | |
3403 | } | |
3404 | if (nfound > 0) | |
3405 | { | |
3406 | if (prevtail == NULL) | |
3407 | { | |
3408 | struct symbol_search dummy; | |
3409 | ||
3410 | dummy.next = sr; | |
3411 | tail = sort_search_symbols (&dummy, nfound); | |
3412 | sr = dummy.next; | |
3413 | ||
681bf369 | 3414 | make_cleanup_free_search_symbols (sr); |
c5aa993b | 3415 | } |
434d2d4f DJ |
3416 | else |
3417 | tail = sort_search_symbols (prevtail, nfound); | |
c5aa993b JM |
3418 | } |
3419 | } | |
c5aa993b | 3420 | } |
c906108c SS |
3421 | |
3422 | /* If there are no eyes, avoid all contact. I mean, if there are | |
3423 | no debug symbols, then print directly from the msymbol_vector. */ | |
3424 | ||
176620f1 | 3425 | if (found_misc || kind != FUNCTIONS_DOMAIN) |
c906108c SS |
3426 | { |
3427 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 3428 | { |
89295b4d PP |
3429 | QUIT; |
3430 | ||
c5aa993b JM |
3431 | if (MSYMBOL_TYPE (msymbol) == ourtype || |
3432 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3433 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3434 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3435 | { | |
681bf369 JK |
3436 | if (!datum.preg_p |
3437 | || regexec (&datum.preg, SYMBOL_NATURAL_NAME (msymbol), 0, | |
3438 | NULL, 0) == 0) | |
c5aa993b | 3439 | { |
c378eb4e | 3440 | /* Functions: Look up by address. */ |
176620f1 | 3441 | if (kind != FUNCTIONS_DOMAIN || |
c5aa993b JM |
3442 | (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) |
3443 | { | |
c378eb4e | 3444 | /* Variables/Absolutes: Look up by name. */ |
2335f48e | 3445 | if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
2570f2b7 UW |
3446 | (struct block *) NULL, VAR_DOMAIN, 0) |
3447 | == NULL) | |
c5aa993b JM |
3448 | { |
3449 | /* match */ | |
3e43a32a MS |
3450 | psr = (struct symbol_search *) |
3451 | xmalloc (sizeof (struct symbol_search)); | |
c5aa993b JM |
3452 | psr->block = i; |
3453 | psr->msymbol = msymbol; | |
3454 | psr->symtab = NULL; | |
3455 | psr->symbol = NULL; | |
3456 | psr->next = NULL; | |
3457 | if (tail == NULL) | |
3458 | { | |
3459 | sr = psr; | |
681bf369 | 3460 | make_cleanup_free_search_symbols (sr); |
c5aa993b JM |
3461 | } |
3462 | else | |
3463 | tail->next = psr; | |
3464 | tail = psr; | |
3465 | } | |
3466 | } | |
3467 | } | |
3468 | } | |
3469 | } | |
c906108c SS |
3470 | } |
3471 | ||
681bf369 JK |
3472 | discard_cleanups (retval_chain); |
3473 | do_cleanups (old_chain); | |
c906108c | 3474 | *matches = sr; |
c906108c SS |
3475 | } |
3476 | ||
3477 | /* Helper function for symtab_symbol_info, this function uses | |
3478 | the data returned from search_symbols() to print information | |
c378eb4e MS |
3479 | regarding the match to gdb_stdout. */ |
3480 | ||
c906108c | 3481 | static void |
8903c50d TT |
3482 | print_symbol_info (enum search_domain kind, |
3483 | struct symtab *s, struct symbol *sym, | |
fba45db2 | 3484 | int block, char *last) |
c906108c | 3485 | { |
0ba1096a | 3486 | if (last == NULL || filename_cmp (last, s->filename) != 0) |
c906108c SS |
3487 | { |
3488 | fputs_filtered ("\nFile ", gdb_stdout); | |
3489 | fputs_filtered (s->filename, gdb_stdout); | |
3490 | fputs_filtered (":\n", gdb_stdout); | |
3491 | } | |
3492 | ||
176620f1 | 3493 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 3494 | printf_filtered ("static "); |
c5aa993b | 3495 | |
c378eb4e | 3496 | /* Typedef that is not a C++ class. */ |
176620f1 EZ |
3497 | if (kind == TYPES_DOMAIN |
3498 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 3499 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c378eb4e | 3500 | /* variable, func, or typedef-that-is-c++-class. */ |
176620f1 EZ |
3501 | else if (kind < TYPES_DOMAIN || |
3502 | (kind == TYPES_DOMAIN && | |
3503 | SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
3504 | { |
3505 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 3506 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 3507 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 3508 | gdb_stdout, 0); |
c906108c SS |
3509 | |
3510 | printf_filtered (";\n"); | |
3511 | } | |
c906108c SS |
3512 | } |
3513 | ||
3514 | /* This help function for symtab_symbol_info() prints information | |
c378eb4e MS |
3515 | for non-debugging symbols to gdb_stdout. */ |
3516 | ||
c906108c | 3517 | static void |
fba45db2 | 3518 | print_msymbol_info (struct minimal_symbol *msymbol) |
c906108c | 3519 | { |
d80b854b | 3520 | struct gdbarch *gdbarch = get_objfile_arch (msymbol_objfile (msymbol)); |
3ac4495a MS |
3521 | char *tmp; |
3522 | ||
d80b854b | 3523 | if (gdbarch_addr_bit (gdbarch) <= 32) |
bb599908 PH |
3524 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol) |
3525 | & (CORE_ADDR) 0xffffffff, | |
3526 | 8); | |
3ac4495a | 3527 | else |
bb599908 PH |
3528 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol), |
3529 | 16); | |
3ac4495a | 3530 | printf_filtered ("%s %s\n", |
de5ad195 | 3531 | tmp, SYMBOL_PRINT_NAME (msymbol)); |
c906108c SS |
3532 | } |
3533 | ||
3534 | /* This is the guts of the commands "info functions", "info types", and | |
c378eb4e | 3535 | "info variables". It calls search_symbols to find all matches and then |
c906108c | 3536 | print_[m]symbol_info to print out some useful information about the |
c378eb4e MS |
3537 | matches. */ |
3538 | ||
c906108c | 3539 | static void |
8903c50d | 3540 | symtab_symbol_info (char *regexp, enum search_domain kind, int from_tty) |
c906108c | 3541 | { |
bc043ef3 | 3542 | static const char * const classnames[] = |
e8930875 | 3543 | {"variable", "function", "type"}; |
c906108c SS |
3544 | struct symbol_search *symbols; |
3545 | struct symbol_search *p; | |
3546 | struct cleanup *old_chain; | |
3547 | char *last_filename = NULL; | |
3548 | int first = 1; | |
3549 | ||
e8930875 JK |
3550 | gdb_assert (kind <= TYPES_DOMAIN); |
3551 | ||
c378eb4e | 3552 | /* Must make sure that if we're interrupted, symbols gets freed. */ |
c906108c | 3553 | search_symbols (regexp, kind, 0, (char **) NULL, &symbols); |
5bd98722 | 3554 | old_chain = make_cleanup_free_search_symbols (symbols); |
c906108c SS |
3555 | |
3556 | printf_filtered (regexp | |
c5aa993b JM |
3557 | ? "All %ss matching regular expression \"%s\":\n" |
3558 | : "All defined %ss:\n", | |
8903c50d | 3559 | classnames[kind], regexp); |
c906108c SS |
3560 | |
3561 | for (p = symbols; p != NULL; p = p->next) | |
3562 | { | |
3563 | QUIT; | |
3564 | ||
3565 | if (p->msymbol != NULL) | |
c5aa993b JM |
3566 | { |
3567 | if (first) | |
3568 | { | |
3569 | printf_filtered ("\nNon-debugging symbols:\n"); | |
3570 | first = 0; | |
3571 | } | |
3572 | print_msymbol_info (p->msymbol); | |
3573 | } | |
c906108c | 3574 | else |
c5aa993b JM |
3575 | { |
3576 | print_symbol_info (kind, | |
3577 | p->symtab, | |
3578 | p->symbol, | |
3579 | p->block, | |
3580 | last_filename); | |
3581 | last_filename = p->symtab->filename; | |
3582 | } | |
c906108c SS |
3583 | } |
3584 | ||
3585 | do_cleanups (old_chain); | |
3586 | } | |
3587 | ||
3588 | static void | |
fba45db2 | 3589 | variables_info (char *regexp, int from_tty) |
c906108c | 3590 | { |
176620f1 | 3591 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
3592 | } |
3593 | ||
3594 | static void | |
fba45db2 | 3595 | functions_info (char *regexp, int from_tty) |
c906108c | 3596 | { |
176620f1 | 3597 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
3598 | } |
3599 | ||
357e46e7 | 3600 | |
c906108c | 3601 | static void |
fba45db2 | 3602 | types_info (char *regexp, int from_tty) |
c906108c | 3603 | { |
176620f1 | 3604 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
3605 | } |
3606 | ||
c378eb4e | 3607 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 3608 | |
8b93c638 | 3609 | void |
fba45db2 | 3610 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
3611 | { |
3612 | rbreak_command (regexp, from_tty); | |
3613 | } | |
8926118c | 3614 | |
95a42b64 TT |
3615 | /* A cleanup function that calls end_rbreak_breakpoints. */ |
3616 | ||
3617 | static void | |
3618 | do_end_rbreak_breakpoints (void *ignore) | |
3619 | { | |
3620 | end_rbreak_breakpoints (); | |
3621 | } | |
3622 | ||
c906108c | 3623 | static void |
fba45db2 | 3624 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
3625 | { |
3626 | struct symbol_search *ss; | |
3627 | struct symbol_search *p; | |
3628 | struct cleanup *old_chain; | |
95a42b64 TT |
3629 | char *string = NULL; |
3630 | int len = 0; | |
9c1e305a | 3631 | char **files = NULL, *file_name; |
8bd10a10 | 3632 | int nfiles = 0; |
c906108c | 3633 | |
8bd10a10 CM |
3634 | if (regexp) |
3635 | { | |
3636 | char *colon = strchr (regexp, ':'); | |
433759f7 | 3637 | |
8bd10a10 CM |
3638 | if (colon && *(colon + 1) != ':') |
3639 | { | |
3640 | int colon_index; | |
8bd10a10 CM |
3641 | |
3642 | colon_index = colon - regexp; | |
3643 | file_name = alloca (colon_index + 1); | |
3644 | memcpy (file_name, regexp, colon_index); | |
3645 | file_name[colon_index--] = 0; | |
3646 | while (isspace (file_name[colon_index])) | |
3647 | file_name[colon_index--] = 0; | |
3648 | files = &file_name; | |
3649 | nfiles = 1; | |
3650 | regexp = colon + 1; | |
3651 | while (isspace (*regexp)) regexp++; | |
3652 | } | |
3653 | } | |
3654 | ||
3655 | search_symbols (regexp, FUNCTIONS_DOMAIN, nfiles, files, &ss); | |
5bd98722 | 3656 | old_chain = make_cleanup_free_search_symbols (ss); |
95a42b64 | 3657 | make_cleanup (free_current_contents, &string); |
c906108c | 3658 | |
95a42b64 TT |
3659 | start_rbreak_breakpoints (); |
3660 | make_cleanup (do_end_rbreak_breakpoints, NULL); | |
c906108c SS |
3661 | for (p = ss; p != NULL; p = p->next) |
3662 | { | |
3663 | if (p->msymbol == NULL) | |
c5aa993b | 3664 | { |
95a42b64 TT |
3665 | int newlen = (strlen (p->symtab->filename) |
3666 | + strlen (SYMBOL_LINKAGE_NAME (p->symbol)) | |
3667 | + 4); | |
433759f7 | 3668 | |
95a42b64 TT |
3669 | if (newlen > len) |
3670 | { | |
3671 | string = xrealloc (string, newlen); | |
3672 | len = newlen; | |
3673 | } | |
c5aa993b JM |
3674 | strcpy (string, p->symtab->filename); |
3675 | strcat (string, ":'"); | |
2335f48e | 3676 | strcat (string, SYMBOL_LINKAGE_NAME (p->symbol)); |
c5aa993b JM |
3677 | strcat (string, "'"); |
3678 | break_command (string, from_tty); | |
176620f1 | 3679 | print_symbol_info (FUNCTIONS_DOMAIN, |
c5aa993b JM |
3680 | p->symtab, |
3681 | p->symbol, | |
3682 | p->block, | |
3683 | p->symtab->filename); | |
3684 | } | |
c906108c | 3685 | else |
c5aa993b | 3686 | { |
433759f7 MS |
3687 | int newlen = (strlen (SYMBOL_LINKAGE_NAME (p->msymbol)) + 3); |
3688 | ||
95a42b64 TT |
3689 | if (newlen > len) |
3690 | { | |
3691 | string = xrealloc (string, newlen); | |
3692 | len = newlen; | |
3693 | } | |
6214f497 DJ |
3694 | strcpy (string, "'"); |
3695 | strcat (string, SYMBOL_LINKAGE_NAME (p->msymbol)); | |
3696 | strcat (string, "'"); | |
3697 | ||
3698 | break_command (string, from_tty); | |
c5aa993b | 3699 | printf_filtered ("<function, no debug info> %s;\n", |
de5ad195 | 3700 | SYMBOL_PRINT_NAME (p->msymbol)); |
c5aa993b | 3701 | } |
c906108c SS |
3702 | } |
3703 | ||
3704 | do_cleanups (old_chain); | |
3705 | } | |
c906108c | 3706 | \f |
c5aa993b | 3707 | |
1976171a JK |
3708 | /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN. |
3709 | ||
3710 | Either sym_text[sym_text_len] != '(' and then we search for any | |
3711 | symbol starting with SYM_TEXT text. | |
3712 | ||
3713 | Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to | |
3714 | be terminated at that point. Partial symbol tables do not have parameters | |
3715 | information. */ | |
3716 | ||
3717 | static int | |
3718 | compare_symbol_name (const char *name, const char *sym_text, int sym_text_len) | |
3719 | { | |
3720 | int (*ncmp) (const char *, const char *, size_t); | |
3721 | ||
3722 | ncmp = (case_sensitivity == case_sensitive_on ? strncmp : strncasecmp); | |
3723 | ||
3724 | if (ncmp (name, sym_text, sym_text_len) != 0) | |
3725 | return 0; | |
3726 | ||
3727 | if (sym_text[sym_text_len] == '(') | |
3728 | { | |
3729 | /* User searches for `name(someth...'. Require NAME to be terminated. | |
3730 | Normally psymtabs and gdbindex have no parameter types so '\0' will be | |
3731 | present but accept even parameters presence. In this case this | |
3732 | function is in fact strcmp_iw but whitespace skipping is not supported | |
3733 | for tab completion. */ | |
3734 | ||
3735 | if (name[sym_text_len] != '\0' && name[sym_text_len] != '(') | |
3736 | return 0; | |
3737 | } | |
3738 | ||
3739 | return 1; | |
3740 | } | |
3741 | ||
821296b7 SA |
3742 | /* Free any memory associated with a completion list. */ |
3743 | ||
3744 | static void | |
3745 | free_completion_list (char ***list_ptr) | |
3746 | { | |
3747 | int i = 0; | |
3748 | char **list = *list_ptr; | |
3749 | ||
3750 | while (list[i] != NULL) | |
3751 | { | |
3752 | xfree (list[i]); | |
3753 | i++; | |
3754 | } | |
3755 | xfree (list); | |
3756 | } | |
3757 | ||
3758 | /* Callback for make_cleanup. */ | |
3759 | ||
3760 | static void | |
3761 | do_free_completion_list (void *list) | |
3762 | { | |
3763 | free_completion_list (list); | |
3764 | } | |
3765 | ||
c906108c SS |
3766 | /* Helper routine for make_symbol_completion_list. */ |
3767 | ||
3768 | static int return_val_size; | |
3769 | static int return_val_index; | |
3770 | static char **return_val; | |
3771 | ||
3772 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
c906108c | 3773 | completion_list_add_name \ |
2335f48e | 3774 | (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) |
c906108c SS |
3775 | |
3776 | /* Test to see if the symbol specified by SYMNAME (which is already | |
c5aa993b | 3777 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
c378eb4e | 3778 | characters. If so, add it to the current completion list. */ |
c906108c SS |
3779 | |
3780 | static void | |
fba45db2 KB |
3781 | completion_list_add_name (char *symname, char *sym_text, int sym_text_len, |
3782 | char *text, char *word) | |
c906108c SS |
3783 | { |
3784 | int newsize; | |
c906108c | 3785 | |
c378eb4e | 3786 | /* Clip symbols that cannot match. */ |
1976171a JK |
3787 | if (!compare_symbol_name (symname, sym_text, sym_text_len)) |
3788 | return; | |
c906108c | 3789 | |
c906108c | 3790 | /* We have a match for a completion, so add SYMNAME to the current list |
c378eb4e | 3791 | of matches. Note that the name is moved to freshly malloc'd space. */ |
c906108c SS |
3792 | |
3793 | { | |
3794 | char *new; | |
433759f7 | 3795 | |
c906108c SS |
3796 | if (word == sym_text) |
3797 | { | |
3798 | new = xmalloc (strlen (symname) + 5); | |
3799 | strcpy (new, symname); | |
3800 | } | |
3801 | else if (word > sym_text) | |
3802 | { | |
3803 | /* Return some portion of symname. */ | |
3804 | new = xmalloc (strlen (symname) + 5); | |
3805 | strcpy (new, symname + (word - sym_text)); | |
3806 | } | |
3807 | else | |
3808 | { | |
3809 | /* Return some of SYM_TEXT plus symname. */ | |
3810 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); | |
3811 | strncpy (new, word, sym_text - word); | |
3812 | new[sym_text - word] = '\0'; | |
3813 | strcat (new, symname); | |
3814 | } | |
3815 | ||
c906108c SS |
3816 | if (return_val_index + 3 > return_val_size) |
3817 | { | |
3818 | newsize = (return_val_size *= 2) * sizeof (char *); | |
3819 | return_val = (char **) xrealloc ((char *) return_val, newsize); | |
3820 | } | |
3821 | return_val[return_val_index++] = new; | |
3822 | return_val[return_val_index] = NULL; | |
3823 | } | |
3824 | } | |
3825 | ||
69636828 AF |
3826 | /* ObjC: In case we are completing on a selector, look as the msymbol |
3827 | again and feed all the selectors into the mill. */ | |
3828 | ||
3829 | static void | |
3830 | completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text, | |
3831 | int sym_text_len, char *text, char *word) | |
3832 | { | |
3833 | static char *tmp = NULL; | |
3834 | static unsigned int tmplen = 0; | |
9af17804 | 3835 | |
69636828 AF |
3836 | char *method, *category, *selector; |
3837 | char *tmp2 = NULL; | |
9af17804 | 3838 | |
69636828 AF |
3839 | method = SYMBOL_NATURAL_NAME (msymbol); |
3840 | ||
3841 | /* Is it a method? */ | |
3842 | if ((method[0] != '-') && (method[0] != '+')) | |
3843 | return; | |
3844 | ||
3845 | if (sym_text[0] == '[') | |
3846 | /* Complete on shortened method method. */ | |
3847 | completion_list_add_name (method + 1, sym_text, sym_text_len, text, word); | |
9af17804 | 3848 | |
69636828 AF |
3849 | while ((strlen (method) + 1) >= tmplen) |
3850 | { | |
3851 | if (tmplen == 0) | |
3852 | tmplen = 1024; | |
3853 | else | |
3854 | tmplen *= 2; | |
3855 | tmp = xrealloc (tmp, tmplen); | |
3856 | } | |
3857 | selector = strchr (method, ' '); | |
3858 | if (selector != NULL) | |
3859 | selector++; | |
9af17804 | 3860 | |
69636828 | 3861 | category = strchr (method, '('); |
9af17804 | 3862 | |
69636828 AF |
3863 | if ((category != NULL) && (selector != NULL)) |
3864 | { | |
3865 | memcpy (tmp, method, (category - method)); | |
3866 | tmp[category - method] = ' '; | |
3867 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
3868 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
3869 | if (sym_text[0] == '[') | |
3870 | completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word); | |
3871 | } | |
9af17804 | 3872 | |
69636828 AF |
3873 | if (selector != NULL) |
3874 | { | |
3875 | /* Complete on selector only. */ | |
3876 | strcpy (tmp, selector); | |
3877 | tmp2 = strchr (tmp, ']'); | |
3878 | if (tmp2 != NULL) | |
3879 | *tmp2 = '\0'; | |
9af17804 | 3880 | |
69636828 AF |
3881 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); |
3882 | } | |
3883 | } | |
3884 | ||
3885 | /* Break the non-quoted text based on the characters which are in | |
c378eb4e | 3886 | symbols. FIXME: This should probably be language-specific. */ |
69636828 AF |
3887 | |
3888 | static char * | |
3889 | language_search_unquoted_string (char *text, char *p) | |
3890 | { | |
3891 | for (; p > text; --p) | |
3892 | { | |
3893 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
3894 | continue; | |
3895 | else | |
3896 | { | |
3897 | if ((current_language->la_language == language_objc)) | |
3898 | { | |
c378eb4e | 3899 | if (p[-1] == ':') /* Might be part of a method name. */ |
69636828 AF |
3900 | continue; |
3901 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
c378eb4e | 3902 | p -= 2; /* Beginning of a method name. */ |
69636828 | 3903 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') |
c378eb4e | 3904 | { /* Might be part of a method name. */ |
69636828 AF |
3905 | char *t = p; |
3906 | ||
3907 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
3908 | that we are in the middle of a method name. However, | |
3909 | finding "-[" or "+[" should be pretty un-ambiguous. | |
3910 | Unfortunately we have to find it now to decide. */ | |
3911 | ||
3912 | while (t > text) | |
3913 | if (isalnum (t[-1]) || t[-1] == '_' || | |
3914 | t[-1] == ' ' || t[-1] == ':' || | |
3915 | t[-1] == '(' || t[-1] == ')') | |
3916 | --t; | |
3917 | else | |
3918 | break; | |
3919 | ||
3920 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
c378eb4e MS |
3921 | p = t - 2; /* Method name detected. */ |
3922 | /* Else we leave with p unchanged. */ | |
69636828 AF |
3923 | } |
3924 | } | |
3925 | break; | |
3926 | } | |
3927 | } | |
3928 | return p; | |
3929 | } | |
3930 | ||
edb3359d DJ |
3931 | static void |
3932 | completion_list_add_fields (struct symbol *sym, char *sym_text, | |
3933 | int sym_text_len, char *text, char *word) | |
3934 | { | |
3935 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
3936 | { | |
3937 | struct type *t = SYMBOL_TYPE (sym); | |
3938 | enum type_code c = TYPE_CODE (t); | |
3939 | int j; | |
3940 | ||
3941 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
3942 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
3943 | if (TYPE_FIELD_NAME (t, j)) | |
3944 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
3945 | sym_text, sym_text_len, text, word); | |
3946 | } | |
3947 | } | |
3948 | ||
ccefe4c4 | 3949 | /* Type of the user_data argument passed to add_macro_name or |
7b08b9eb | 3950 | expand_partial_symbol_name. The contents are simply whatever is |
ccefe4c4 TT |
3951 | needed by completion_list_add_name. */ |
3952 | struct add_name_data | |
9a044a89 TT |
3953 | { |
3954 | char *sym_text; | |
3955 | int sym_text_len; | |
3956 | char *text; | |
3957 | char *word; | |
3958 | }; | |
3959 | ||
3960 | /* A callback used with macro_for_each and macro_for_each_in_scope. | |
3961 | This adds a macro's name to the current completion list. */ | |
3962 | static void | |
3963 | add_macro_name (const char *name, const struct macro_definition *ignore, | |
9b158ba0 | 3964 | struct macro_source_file *ignore2, int ignore3, |
9a044a89 TT |
3965 | void *user_data) |
3966 | { | |
ccefe4c4 | 3967 | struct add_name_data *datum = (struct add_name_data *) user_data; |
433759f7 | 3968 | |
ccefe4c4 TT |
3969 | completion_list_add_name ((char *) name, |
3970 | datum->sym_text, datum->sym_text_len, | |
3971 | datum->text, datum->word); | |
3972 | } | |
3973 | ||
7b08b9eb JK |
3974 | /* A callback for expand_partial_symbol_names. */ |
3975 | static int | |
f8eba3c6 TT |
3976 | expand_partial_symbol_name (const struct language_defn *language, |
3977 | const char *name, void *user_data) | |
ccefe4c4 TT |
3978 | { |
3979 | struct add_name_data *datum = (struct add_name_data *) user_data; | |
165195f4 | 3980 | |
1976171a | 3981 | return compare_symbol_name (name, datum->sym_text, datum->sym_text_len); |
9a044a89 TT |
3982 | } |
3983 | ||
c906108c | 3984 | char ** |
f55ee35c JK |
3985 | default_make_symbol_completion_list_break_on (char *text, char *word, |
3986 | const char *break_on) | |
c906108c | 3987 | { |
41d27058 JB |
3988 | /* Problem: All of the symbols have to be copied because readline |
3989 | frees them. I'm not going to worry about this; hopefully there | |
3990 | won't be that many. */ | |
3991 | ||
de4f826b DC |
3992 | struct symbol *sym; |
3993 | struct symtab *s; | |
de4f826b DC |
3994 | struct minimal_symbol *msymbol; |
3995 | struct objfile *objfile; | |
edb3359d DJ |
3996 | struct block *b; |
3997 | const struct block *surrounding_static_block, *surrounding_global_block; | |
de4f826b | 3998 | struct dict_iterator iter; |
c906108c SS |
3999 | /* The symbol we are completing on. Points in same buffer as text. */ |
4000 | char *sym_text; | |
4001 | /* Length of sym_text. */ | |
4002 | int sym_text_len; | |
ccefe4c4 | 4003 | struct add_name_data datum; |
821296b7 | 4004 | struct cleanup *back_to; |
c906108c | 4005 | |
41d27058 | 4006 | /* Now look for the symbol we are supposed to complete on. */ |
c906108c SS |
4007 | { |
4008 | char *p; | |
4009 | char quote_found; | |
4010 | char *quote_pos = NULL; | |
4011 | ||
4012 | /* First see if this is a quoted string. */ | |
4013 | quote_found = '\0'; | |
4014 | for (p = text; *p != '\0'; ++p) | |
4015 | { | |
4016 | if (quote_found != '\0') | |
4017 | { | |
4018 | if (*p == quote_found) | |
4019 | /* Found close quote. */ | |
4020 | quote_found = '\0'; | |
4021 | else if (*p == '\\' && p[1] == quote_found) | |
4022 | /* A backslash followed by the quote character | |
c5aa993b | 4023 | doesn't end the string. */ |
c906108c SS |
4024 | ++p; |
4025 | } | |
4026 | else if (*p == '\'' || *p == '"') | |
4027 | { | |
4028 | quote_found = *p; | |
4029 | quote_pos = p; | |
4030 | } | |
4031 | } | |
4032 | if (quote_found == '\'') | |
4033 | /* A string within single quotes can be a symbol, so complete on it. */ | |
4034 | sym_text = quote_pos + 1; | |
4035 | else if (quote_found == '"') | |
4036 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 4037 | to complete it any other way. */ |
c94fdfd0 EZ |
4038 | { |
4039 | return_val = (char **) xmalloc (sizeof (char *)); | |
4040 | return_val[0] = NULL; | |
4041 | return return_val; | |
4042 | } | |
c906108c SS |
4043 | else |
4044 | { | |
4045 | /* It is not a quoted string. Break it based on the characters | |
4046 | which are in symbols. */ | |
4047 | while (p > text) | |
4048 | { | |
95699ff0 | 4049 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
f55ee35c | 4050 | || p[-1] == ':' || strchr (break_on, p[-1]) != NULL) |
c906108c SS |
4051 | --p; |
4052 | else | |
4053 | break; | |
4054 | } | |
4055 | sym_text = p; | |
4056 | } | |
4057 | } | |
4058 | ||
4059 | sym_text_len = strlen (sym_text); | |
4060 | ||
1976171a JK |
4061 | /* Prepare SYM_TEXT_LEN for compare_symbol_name. */ |
4062 | ||
4063 | if (current_language->la_language == language_cplus | |
4064 | || current_language->la_language == language_java | |
4065 | || current_language->la_language == language_fortran) | |
4066 | { | |
4067 | /* These languages may have parameters entered by user but they are never | |
4068 | present in the partial symbol tables. */ | |
4069 | ||
4070 | const char *cs = memchr (sym_text, '(', sym_text_len); | |
4071 | ||
4072 | if (cs) | |
4073 | sym_text_len = cs - sym_text; | |
4074 | } | |
4075 | gdb_assert (sym_text[sym_text_len] == '\0' || sym_text[sym_text_len] == '('); | |
4076 | ||
c906108c SS |
4077 | return_val_size = 100; |
4078 | return_val_index = 0; | |
4079 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
4080 | return_val[0] = NULL; | |
821296b7 | 4081 | back_to = make_cleanup (do_free_completion_list, &return_val); |
c906108c | 4082 | |
ccefe4c4 TT |
4083 | datum.sym_text = sym_text; |
4084 | datum.sym_text_len = sym_text_len; | |
4085 | datum.text = text; | |
4086 | datum.word = word; | |
4087 | ||
c906108c | 4088 | /* Look through the partial symtabs for all symbols which begin |
7b08b9eb JK |
4089 | by matching SYM_TEXT. Expand all CUs that you find to the list. |
4090 | The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */ | |
4091 | expand_partial_symbol_names (expand_partial_symbol_name, &datum); | |
c906108c SS |
4092 | |
4093 | /* At this point scan through the misc symbol vectors and add each | |
4094 | symbol you find to the list. Eventually we want to ignore | |
4095 | anything that isn't a text symbol (everything else will be | |
4096 | handled by the psymtab code above). */ | |
4097 | ||
4098 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
4099 | { |
4100 | QUIT; | |
4101 | COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); | |
9af17804 | 4102 | |
69636828 | 4103 | completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word); |
c5aa993b | 4104 | } |
c906108c SS |
4105 | |
4106 | /* Search upwards from currently selected frame (so that we can | |
edb3359d DJ |
4107 | complete on local vars). Also catch fields of types defined in |
4108 | this places which match our text string. Only complete on types | |
c378eb4e | 4109 | visible from current context. */ |
edb3359d DJ |
4110 | |
4111 | b = get_selected_block (0); | |
4112 | surrounding_static_block = block_static_block (b); | |
4113 | surrounding_global_block = block_global_block (b); | |
4114 | if (surrounding_static_block != NULL) | |
4115 | while (b != surrounding_static_block) | |
4116 | { | |
4117 | QUIT; | |
c906108c | 4118 | |
edb3359d DJ |
4119 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
4120 | { | |
4121 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
4122 | word); | |
4123 | completion_list_add_fields (sym, sym_text, sym_text_len, text, | |
4124 | word); | |
4125 | } | |
c5aa993b | 4126 | |
edb3359d DJ |
4127 | /* Stop when we encounter an enclosing function. Do not stop for |
4128 | non-inlined functions - the locals of the enclosing function | |
4129 | are in scope for a nested function. */ | |
4130 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
4131 | break; | |
4132 | b = BLOCK_SUPERBLOCK (b); | |
4133 | } | |
c906108c | 4134 | |
edb3359d | 4135 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 4136 | |
edb3359d DJ |
4137 | if (surrounding_static_block != NULL) |
4138 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
4139 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
4140 | ||
4141 | if (surrounding_global_block != NULL) | |
4142 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
4143 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
c906108c SS |
4144 | |
4145 | /* Go through the symtabs and check the externs and statics for | |
4146 | symbols which match. */ | |
4147 | ||
11309657 | 4148 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
4149 | { |
4150 | QUIT; | |
4151 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 4152 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 4153 | { |
c5aa993b JM |
4154 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4155 | } | |
4156 | } | |
c906108c | 4157 | |
11309657 | 4158 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
4159 | { |
4160 | QUIT; | |
4161 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 4162 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 4163 | { |
c5aa993b JM |
4164 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4165 | } | |
4166 | } | |
c906108c | 4167 | |
9a044a89 TT |
4168 | if (current_language->la_macro_expansion == macro_expansion_c) |
4169 | { | |
4170 | struct macro_scope *scope; | |
9a044a89 TT |
4171 | |
4172 | /* Add any macros visible in the default scope. Note that this | |
4173 | may yield the occasional wrong result, because an expression | |
4174 | might be evaluated in a scope other than the default. For | |
4175 | example, if the user types "break file:line if <TAB>", the | |
4176 | resulting expression will be evaluated at "file:line" -- but | |
4177 | at there does not seem to be a way to detect this at | |
4178 | completion time. */ | |
4179 | scope = default_macro_scope (); | |
4180 | if (scope) | |
4181 | { | |
4182 | macro_for_each_in_scope (scope->file, scope->line, | |
4183 | add_macro_name, &datum); | |
4184 | xfree (scope); | |
4185 | } | |
4186 | ||
4187 | /* User-defined macros are always visible. */ | |
4188 | macro_for_each (macro_user_macros, add_macro_name, &datum); | |
4189 | } | |
4190 | ||
821296b7 | 4191 | discard_cleanups (back_to); |
c906108c SS |
4192 | return (return_val); |
4193 | } | |
4194 | ||
f55ee35c JK |
4195 | char ** |
4196 | default_make_symbol_completion_list (char *text, char *word) | |
4197 | { | |
4198 | return default_make_symbol_completion_list_break_on (text, word, ""); | |
4199 | } | |
4200 | ||
41d27058 JB |
4201 | /* Return a NULL terminated array of all symbols (regardless of class) |
4202 | which begin by matching TEXT. If the answer is no symbols, then | |
4203 | the return value is an array which contains only a NULL pointer. */ | |
4204 | ||
4205 | char ** | |
4206 | make_symbol_completion_list (char *text, char *word) | |
4207 | { | |
4208 | return current_language->la_make_symbol_completion_list (text, word); | |
4209 | } | |
4210 | ||
d8906c6f TJB |
4211 | /* Like make_symbol_completion_list, but suitable for use as a |
4212 | completion function. */ | |
4213 | ||
4214 | char ** | |
4215 | make_symbol_completion_list_fn (struct cmd_list_element *ignore, | |
4216 | char *text, char *word) | |
4217 | { | |
4218 | return make_symbol_completion_list (text, word); | |
4219 | } | |
4220 | ||
c94fdfd0 EZ |
4221 | /* Like make_symbol_completion_list, but returns a list of symbols |
4222 | defined in a source file FILE. */ | |
4223 | ||
4224 | char ** | |
4225 | make_file_symbol_completion_list (char *text, char *word, char *srcfile) | |
4226 | { | |
52f0bd74 AC |
4227 | struct symbol *sym; |
4228 | struct symtab *s; | |
4229 | struct block *b; | |
de4f826b | 4230 | struct dict_iterator iter; |
c94fdfd0 EZ |
4231 | /* The symbol we are completing on. Points in same buffer as text. */ |
4232 | char *sym_text; | |
4233 | /* Length of sym_text. */ | |
4234 | int sym_text_len; | |
4235 | ||
4236 | /* Now look for the symbol we are supposed to complete on. | |
4237 | FIXME: This should be language-specific. */ | |
4238 | { | |
4239 | char *p; | |
4240 | char quote_found; | |
4241 | char *quote_pos = NULL; | |
4242 | ||
4243 | /* First see if this is a quoted string. */ | |
4244 | quote_found = '\0'; | |
4245 | for (p = text; *p != '\0'; ++p) | |
4246 | { | |
4247 | if (quote_found != '\0') | |
4248 | { | |
4249 | if (*p == quote_found) | |
4250 | /* Found close quote. */ | |
4251 | quote_found = '\0'; | |
4252 | else if (*p == '\\' && p[1] == quote_found) | |
4253 | /* A backslash followed by the quote character | |
4254 | doesn't end the string. */ | |
4255 | ++p; | |
4256 | } | |
4257 | else if (*p == '\'' || *p == '"') | |
4258 | { | |
4259 | quote_found = *p; | |
4260 | quote_pos = p; | |
4261 | } | |
4262 | } | |
4263 | if (quote_found == '\'') | |
4264 | /* A string within single quotes can be a symbol, so complete on it. */ | |
4265 | sym_text = quote_pos + 1; | |
4266 | else if (quote_found == '"') | |
4267 | /* A double-quoted string is never a symbol, nor does it make sense | |
4268 | to complete it any other way. */ | |
4269 | { | |
4270 | return_val = (char **) xmalloc (sizeof (char *)); | |
4271 | return_val[0] = NULL; | |
4272 | return return_val; | |
4273 | } | |
4274 | else | |
4275 | { | |
69636828 AF |
4276 | /* Not a quoted string. */ |
4277 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
4278 | } |
4279 | } | |
4280 | ||
4281 | sym_text_len = strlen (sym_text); | |
4282 | ||
4283 | return_val_size = 10; | |
4284 | return_val_index = 0; | |
4285 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
4286 | return_val[0] = NULL; | |
4287 | ||
4288 | /* Find the symtab for SRCFILE (this loads it if it was not yet read | |
4289 | in). */ | |
4290 | s = lookup_symtab (srcfile); | |
4291 | if (s == NULL) | |
4292 | { | |
4293 | /* Maybe they typed the file with leading directories, while the | |
4294 | symbol tables record only its basename. */ | |
31889e00 | 4295 | const char *tail = lbasename (srcfile); |
c94fdfd0 EZ |
4296 | |
4297 | if (tail > srcfile) | |
4298 | s = lookup_symtab (tail); | |
4299 | } | |
4300 | ||
4301 | /* If we have no symtab for that file, return an empty list. */ | |
4302 | if (s == NULL) | |
4303 | return (return_val); | |
4304 | ||
4305 | /* Go through this symtab and check the externs and statics for | |
4306 | symbols which match. */ | |
4307 | ||
4308 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 4309 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 4310 | { |
c94fdfd0 EZ |
4311 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4312 | } | |
4313 | ||
4314 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 4315 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 4316 | { |
c94fdfd0 EZ |
4317 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4318 | } | |
4319 | ||
4320 | return (return_val); | |
4321 | } | |
4322 | ||
4323 | /* A helper function for make_source_files_completion_list. It adds | |
4324 | another file name to a list of possible completions, growing the | |
4325 | list as necessary. */ | |
4326 | ||
4327 | static void | |
4328 | add_filename_to_list (const char *fname, char *text, char *word, | |
4329 | char ***list, int *list_used, int *list_alloced) | |
4330 | { | |
4331 | char *new; | |
4332 | size_t fnlen = strlen (fname); | |
4333 | ||
4334 | if (*list_used + 1 >= *list_alloced) | |
4335 | { | |
4336 | *list_alloced *= 2; | |
4337 | *list = (char **) xrealloc ((char *) *list, | |
4338 | *list_alloced * sizeof (char *)); | |
4339 | } | |
4340 | ||
4341 | if (word == text) | |
4342 | { | |
4343 | /* Return exactly fname. */ | |
4344 | new = xmalloc (fnlen + 5); | |
4345 | strcpy (new, fname); | |
4346 | } | |
4347 | else if (word > text) | |
4348 | { | |
4349 | /* Return some portion of fname. */ | |
4350 | new = xmalloc (fnlen + 5); | |
4351 | strcpy (new, fname + (word - text)); | |
4352 | } | |
4353 | else | |
4354 | { | |
4355 | /* Return some of TEXT plus fname. */ | |
4356 | new = xmalloc (fnlen + (text - word) + 5); | |
4357 | strncpy (new, word, text - word); | |
4358 | new[text - word] = '\0'; | |
4359 | strcat (new, fname); | |
4360 | } | |
4361 | (*list)[*list_used] = new; | |
4362 | (*list)[++*list_used] = NULL; | |
4363 | } | |
4364 | ||
4365 | static int | |
4366 | not_interesting_fname (const char *fname) | |
4367 | { | |
4368 | static const char *illegal_aliens[] = { | |
4369 | "_globals_", /* inserted by coff_symtab_read */ | |
4370 | NULL | |
4371 | }; | |
4372 | int i; | |
4373 | ||
4374 | for (i = 0; illegal_aliens[i]; i++) | |
4375 | { | |
0ba1096a | 4376 | if (filename_cmp (fname, illegal_aliens[i]) == 0) |
c94fdfd0 EZ |
4377 | return 1; |
4378 | } | |
4379 | return 0; | |
4380 | } | |
4381 | ||
ccefe4c4 TT |
4382 | /* An object of this type is passed as the user_data argument to |
4383 | map_partial_symbol_filenames. */ | |
4384 | struct add_partial_filename_data | |
4385 | { | |
4386 | int *first; | |
4387 | char *text; | |
4388 | char *word; | |
4389 | int text_len; | |
4390 | char ***list; | |
4391 | int *list_used; | |
4392 | int *list_alloced; | |
4393 | }; | |
4394 | ||
4395 | /* A callback for map_partial_symbol_filenames. */ | |
4396 | static void | |
2837d59e | 4397 | maybe_add_partial_symtab_filename (const char *filename, const char *fullname, |
ccefe4c4 TT |
4398 | void *user_data) |
4399 | { | |
4400 | struct add_partial_filename_data *data = user_data; | |
4401 | ||
4402 | if (not_interesting_fname (filename)) | |
4403 | return; | |
4404 | if (!filename_seen (filename, 1, data->first) | |
0ba1096a | 4405 | && filename_ncmp (filename, data->text, data->text_len) == 0) |
ccefe4c4 TT |
4406 | { |
4407 | /* This file matches for a completion; add it to the | |
4408 | current list of matches. */ | |
4409 | add_filename_to_list (filename, data->text, data->word, | |
4410 | data->list, data->list_used, data->list_alloced); | |
4411 | } | |
4412 | else | |
4413 | { | |
4414 | const char *base_name = lbasename (filename); | |
433759f7 | 4415 | |
ccefe4c4 TT |
4416 | if (base_name != filename |
4417 | && !filename_seen (base_name, 1, data->first) | |
0ba1096a | 4418 | && filename_ncmp (base_name, data->text, data->text_len) == 0) |
ccefe4c4 TT |
4419 | add_filename_to_list (base_name, data->text, data->word, |
4420 | data->list, data->list_used, data->list_alloced); | |
4421 | } | |
4422 | } | |
4423 | ||
c94fdfd0 EZ |
4424 | /* Return a NULL terminated array of all source files whose names |
4425 | begin with matching TEXT. The file names are looked up in the | |
4426 | symbol tables of this program. If the answer is no matchess, then | |
4427 | the return value is an array which contains only a NULL pointer. */ | |
4428 | ||
4429 | char ** | |
4430 | make_source_files_completion_list (char *text, char *word) | |
4431 | { | |
52f0bd74 | 4432 | struct symtab *s; |
52f0bd74 | 4433 | struct objfile *objfile; |
c94fdfd0 EZ |
4434 | int first = 1; |
4435 | int list_alloced = 1; | |
4436 | int list_used = 0; | |
4437 | size_t text_len = strlen (text); | |
4438 | char **list = (char **) xmalloc (list_alloced * sizeof (char *)); | |
31889e00 | 4439 | const char *base_name; |
ccefe4c4 | 4440 | struct add_partial_filename_data datum; |
821296b7 | 4441 | struct cleanup *back_to; |
c94fdfd0 EZ |
4442 | |
4443 | list[0] = NULL; | |
4444 | ||
4445 | if (!have_full_symbols () && !have_partial_symbols ()) | |
4446 | return list; | |
4447 | ||
821296b7 SA |
4448 | back_to = make_cleanup (do_free_completion_list, &list); |
4449 | ||
c94fdfd0 EZ |
4450 | ALL_SYMTABS (objfile, s) |
4451 | { | |
4452 | if (not_interesting_fname (s->filename)) | |
4453 | continue; | |
4454 | if (!filename_seen (s->filename, 1, &first) | |
0ba1096a | 4455 | && filename_ncmp (s->filename, text, text_len) == 0) |
c94fdfd0 EZ |
4456 | { |
4457 | /* This file matches for a completion; add it to the current | |
4458 | list of matches. */ | |
4459 | add_filename_to_list (s->filename, text, word, | |
4460 | &list, &list_used, &list_alloced); | |
4461 | } | |
4462 | else | |
4463 | { | |
4464 | /* NOTE: We allow the user to type a base name when the | |
4465 | debug info records leading directories, but not the other | |
4466 | way around. This is what subroutines of breakpoint | |
4467 | command do when they parse file names. */ | |
31889e00 | 4468 | base_name = lbasename (s->filename); |
c94fdfd0 EZ |
4469 | if (base_name != s->filename |
4470 | && !filename_seen (base_name, 1, &first) | |
0ba1096a | 4471 | && filename_ncmp (base_name, text, text_len) == 0) |
c94fdfd0 EZ |
4472 | add_filename_to_list (base_name, text, word, |
4473 | &list, &list_used, &list_alloced); | |
4474 | } | |
4475 | } | |
4476 | ||
ccefe4c4 TT |
4477 | datum.first = &first; |
4478 | datum.text = text; | |
4479 | datum.word = word; | |
4480 | datum.text_len = text_len; | |
4481 | datum.list = &list; | |
4482 | datum.list_used = &list_used; | |
4483 | datum.list_alloced = &list_alloced; | |
74e2f255 DE |
4484 | map_partial_symbol_filenames (maybe_add_partial_symtab_filename, &datum, |
4485 | 0 /*need_fullname*/); | |
821296b7 | 4486 | discard_cleanups (back_to); |
c94fdfd0 EZ |
4487 | |
4488 | return list; | |
4489 | } | |
4490 | ||
c906108c SS |
4491 | /* Determine if PC is in the prologue of a function. The prologue is the area |
4492 | between the first instruction of a function, and the first executable line. | |
4493 | Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. | |
4494 | ||
4495 | If non-zero, func_start is where we think the prologue starts, possibly | |
c378eb4e | 4496 | by previous examination of symbol table information. */ |
c906108c SS |
4497 | |
4498 | int | |
d80b854b | 4499 | in_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR func_start) |
c906108c SS |
4500 | { |
4501 | struct symtab_and_line sal; | |
4502 | CORE_ADDR func_addr, func_end; | |
4503 | ||
54cf9c03 EZ |
4504 | /* We have several sources of information we can consult to figure |
4505 | this out. | |
4506 | - Compilers usually emit line number info that marks the prologue | |
4507 | as its own "source line". So the ending address of that "line" | |
4508 | is the end of the prologue. If available, this is the most | |
4509 | reliable method. | |
4510 | - The minimal symbols and partial symbols, which can usually tell | |
4511 | us the starting and ending addresses of a function. | |
4512 | - If we know the function's start address, we can call the | |
a433963d | 4513 | architecture-defined gdbarch_skip_prologue function to analyze the |
54cf9c03 EZ |
4514 | instruction stream and guess where the prologue ends. |
4515 | - Our `func_start' argument; if non-zero, this is the caller's | |
4516 | best guess as to the function's entry point. At the time of | |
4517 | this writing, handle_inferior_event doesn't get this right, so | |
4518 | it should be our last resort. */ | |
4519 | ||
4520 | /* Consult the partial symbol table, to find which function | |
4521 | the PC is in. */ | |
4522 | if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
4523 | { | |
4524 | CORE_ADDR prologue_end; | |
c906108c | 4525 | |
54cf9c03 EZ |
4526 | /* We don't even have minsym information, so fall back to using |
4527 | func_start, if given. */ | |
4528 | if (! func_start) | |
4529 | return 1; /* We *might* be in a prologue. */ | |
c906108c | 4530 | |
d80b854b | 4531 | prologue_end = gdbarch_skip_prologue (gdbarch, func_start); |
c906108c | 4532 | |
54cf9c03 EZ |
4533 | return func_start <= pc && pc < prologue_end; |
4534 | } | |
c906108c | 4535 | |
54cf9c03 EZ |
4536 | /* If we have line number information for the function, that's |
4537 | usually pretty reliable. */ | |
4538 | sal = find_pc_line (func_addr, 0); | |
c906108c | 4539 | |
54cf9c03 EZ |
4540 | /* Now sal describes the source line at the function's entry point, |
4541 | which (by convention) is the prologue. The end of that "line", | |
4542 | sal.end, is the end of the prologue. | |
4543 | ||
4544 | Note that, for functions whose source code is all on a single | |
4545 | line, the line number information doesn't always end up this way. | |
4546 | So we must verify that our purported end-of-prologue address is | |
4547 | *within* the function, not at its start or end. */ | |
4548 | if (sal.line == 0 | |
4549 | || sal.end <= func_addr | |
4550 | || func_end <= sal.end) | |
4551 | { | |
4552 | /* We don't have any good line number info, so use the minsym | |
4553 | information, together with the architecture-specific prologue | |
4554 | scanning code. */ | |
d80b854b | 4555 | CORE_ADDR prologue_end = gdbarch_skip_prologue (gdbarch, func_addr); |
c906108c | 4556 | |
54cf9c03 EZ |
4557 | return func_addr <= pc && pc < prologue_end; |
4558 | } | |
c906108c | 4559 | |
54cf9c03 EZ |
4560 | /* We have line number info, and it looks good. */ |
4561 | return func_addr <= pc && pc < sal.end; | |
c906108c SS |
4562 | } |
4563 | ||
634aa483 AC |
4564 | /* Given PC at the function's start address, attempt to find the |
4565 | prologue end using SAL information. Return zero if the skip fails. | |
4566 | ||
4567 | A non-optimized prologue traditionally has one SAL for the function | |
4568 | and a second for the function body. A single line function has | |
4569 | them both pointing at the same line. | |
4570 | ||
4571 | An optimized prologue is similar but the prologue may contain | |
4572 | instructions (SALs) from the instruction body. Need to skip those | |
4573 | while not getting into the function body. | |
4574 | ||
4575 | The functions end point and an increasing SAL line are used as | |
4576 | indicators of the prologue's endpoint. | |
4577 | ||
7475b06c TJB |
4578 | This code is based on the function refine_prologue_limit |
4579 | (found in ia64). */ | |
634aa483 AC |
4580 | |
4581 | CORE_ADDR | |
d80b854b | 4582 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) |
634aa483 AC |
4583 | { |
4584 | struct symtab_and_line prologue_sal; | |
4585 | CORE_ADDR start_pc; | |
4586 | CORE_ADDR end_pc; | |
d54be744 | 4587 | struct block *bl; |
634aa483 AC |
4588 | |
4589 | /* Get an initial range for the function. */ | |
4590 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
d80b854b | 4591 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); |
634aa483 AC |
4592 | |
4593 | prologue_sal = find_pc_line (start_pc, 0); | |
4594 | if (prologue_sal.line != 0) | |
4595 | { | |
e5dd4106 | 4596 | /* For languages other than assembly, treat two consecutive line |
d54be744 DJ |
4597 | entries at the same address as a zero-instruction prologue. |
4598 | The GNU assembler emits separate line notes for each instruction | |
4599 | in a multi-instruction macro, but compilers generally will not | |
4600 | do this. */ | |
4601 | if (prologue_sal.symtab->language != language_asm) | |
4602 | { | |
4603 | struct linetable *linetable = LINETABLE (prologue_sal.symtab); | |
d54be744 DJ |
4604 | int idx = 0; |
4605 | ||
4606 | /* Skip any earlier lines, and any end-of-sequence marker | |
4607 | from a previous function. */ | |
4608 | while (linetable->item[idx].pc != prologue_sal.pc | |
4609 | || linetable->item[idx].line == 0) | |
4610 | idx++; | |
4611 | ||
4612 | if (idx+1 < linetable->nitems | |
4613 | && linetable->item[idx+1].line != 0 | |
4614 | && linetable->item[idx+1].pc == start_pc) | |
4615 | return start_pc; | |
4616 | } | |
4617 | ||
576c2025 FF |
4618 | /* If there is only one sal that covers the entire function, |
4619 | then it is probably a single line function, like | |
c378eb4e | 4620 | "foo(){}". */ |
91934273 | 4621 | if (prologue_sal.end >= end_pc) |
4e463ff5 | 4622 | return 0; |
d54be744 | 4623 | |
634aa483 AC |
4624 | while (prologue_sal.end < end_pc) |
4625 | { | |
4626 | struct symtab_and_line sal; | |
4627 | ||
4628 | sal = find_pc_line (prologue_sal.end, 0); | |
4629 | if (sal.line == 0) | |
4630 | break; | |
4631 | /* Assume that a consecutive SAL for the same (or larger) | |
4632 | line mark the prologue -> body transition. */ | |
4633 | if (sal.line >= prologue_sal.line) | |
4634 | break; | |
edb3359d DJ |
4635 | |
4636 | /* The line number is smaller. Check that it's from the | |
4637 | same function, not something inlined. If it's inlined, | |
4638 | then there is no point comparing the line numbers. */ | |
4639 | bl = block_for_pc (prologue_sal.end); | |
4640 | while (bl) | |
4641 | { | |
4642 | if (block_inlined_p (bl)) | |
4643 | break; | |
4644 | if (BLOCK_FUNCTION (bl)) | |
4645 | { | |
4646 | bl = NULL; | |
4647 | break; | |
4648 | } | |
4649 | bl = BLOCK_SUPERBLOCK (bl); | |
4650 | } | |
4651 | if (bl != NULL) | |
4652 | break; | |
4653 | ||
634aa483 AC |
4654 | /* The case in which compiler's optimizer/scheduler has |
4655 | moved instructions into the prologue. We look ahead in | |
4656 | the function looking for address ranges whose | |
4657 | corresponding line number is less the first one that we | |
4658 | found for the function. This is more conservative then | |
4659 | refine_prologue_limit which scans a large number of SALs | |
c378eb4e | 4660 | looking for any in the prologue. */ |
634aa483 AC |
4661 | prologue_sal = sal; |
4662 | } | |
4663 | } | |
d54be744 DJ |
4664 | |
4665 | if (prologue_sal.end < end_pc) | |
4666 | /* Return the end of this line, or zero if we could not find a | |
4667 | line. */ | |
4668 | return prologue_sal.end; | |
4669 | else | |
4670 | /* Don't return END_PC, which is past the end of the function. */ | |
4671 | return prologue_sal.pc; | |
634aa483 | 4672 | } |
c906108c | 4673 | \f |
50641945 | 4674 | struct symtabs_and_lines |
f8eba3c6 | 4675 | decode_line_spec (char *string, int flags) |
50641945 FN |
4676 | { |
4677 | struct symtabs_and_lines sals; | |
0378c332 | 4678 | struct symtab_and_line cursal; |
9af17804 | 4679 | |
50641945 | 4680 | if (string == 0) |
8a3fe4f8 | 4681 | error (_("Empty line specification.")); |
9af17804 | 4682 | |
c378eb4e MS |
4683 | /* We use whatever is set as the current source line. We do not try |
4684 | and get a default or it will recursively call us! */ | |
0378c332 | 4685 | cursal = get_current_source_symtab_and_line (); |
9af17804 | 4686 | |
f8eba3c6 TT |
4687 | sals = decode_line_1 (&string, flags, |
4688 | cursal.symtab, cursal.line); | |
0378c332 | 4689 | |
50641945 | 4690 | if (*string) |
8a3fe4f8 | 4691 | error (_("Junk at end of line specification: %s"), string); |
50641945 FN |
4692 | return sals; |
4693 | } | |
c5aa993b | 4694 | |
51cc5b07 AC |
4695 | /* Track MAIN */ |
4696 | static char *name_of_main; | |
01f8c46d | 4697 | enum language language_of_main = language_unknown; |
51cc5b07 AC |
4698 | |
4699 | void | |
4700 | set_main_name (const char *name) | |
4701 | { | |
4702 | if (name_of_main != NULL) | |
4703 | { | |
4704 | xfree (name_of_main); | |
4705 | name_of_main = NULL; | |
01f8c46d | 4706 | language_of_main = language_unknown; |
51cc5b07 AC |
4707 | } |
4708 | if (name != NULL) | |
4709 | { | |
4710 | name_of_main = xstrdup (name); | |
01f8c46d | 4711 | language_of_main = language_unknown; |
51cc5b07 AC |
4712 | } |
4713 | } | |
4714 | ||
ea53e89f JB |
4715 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
4716 | accordingly. */ | |
4717 | ||
4718 | static void | |
4719 | find_main_name (void) | |
4720 | { | |
cd6c7346 | 4721 | const char *new_main_name; |
ea53e89f JB |
4722 | |
4723 | /* Try to see if the main procedure is in Ada. */ | |
4724 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
4725 | be to add a new method in the language vector, and call this | |
4726 | method for each language until one of them returns a non-empty | |
4727 | name. This would allow us to remove this hard-coded call to | |
4728 | an Ada function. It is not clear that this is a better approach | |
4729 | at this point, because all methods need to be written in a way | |
c378eb4e | 4730 | such that false positives never be returned. For instance, it is |
ea53e89f JB |
4731 | important that a method does not return a wrong name for the main |
4732 | procedure if the main procedure is actually written in a different | |
4733 | language. It is easy to guaranty this with Ada, since we use a | |
4734 | special symbol generated only when the main in Ada to find the name | |
c378eb4e | 4735 | of the main procedure. It is difficult however to see how this can |
ea53e89f JB |
4736 | be guarantied for languages such as C, for instance. This suggests |
4737 | that order of call for these methods becomes important, which means | |
4738 | a more complicated approach. */ | |
4739 | new_main_name = ada_main_name (); | |
4740 | if (new_main_name != NULL) | |
9af17804 | 4741 | { |
ea53e89f JB |
4742 | set_main_name (new_main_name); |
4743 | return; | |
4744 | } | |
4745 | ||
cd6c7346 PM |
4746 | new_main_name = pascal_main_name (); |
4747 | if (new_main_name != NULL) | |
9af17804 | 4748 | { |
cd6c7346 PM |
4749 | set_main_name (new_main_name); |
4750 | return; | |
4751 | } | |
4752 | ||
ea53e89f JB |
4753 | /* The languages above didn't identify the name of the main procedure. |
4754 | Fallback to "main". */ | |
4755 | set_main_name ("main"); | |
4756 | } | |
4757 | ||
51cc5b07 AC |
4758 | char * |
4759 | main_name (void) | |
4760 | { | |
ea53e89f JB |
4761 | if (name_of_main == NULL) |
4762 | find_main_name (); | |
4763 | ||
4764 | return name_of_main; | |
51cc5b07 AC |
4765 | } |
4766 | ||
ea53e89f JB |
4767 | /* Handle ``executable_changed'' events for the symtab module. */ |
4768 | ||
4769 | static void | |
781b42b0 | 4770 | symtab_observer_executable_changed (void) |
ea53e89f JB |
4771 | { |
4772 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
4773 | set_main_name (NULL); | |
4774 | } | |
51cc5b07 | 4775 | |
a6c727b2 DJ |
4776 | /* Return 1 if the supplied producer string matches the ARM RealView |
4777 | compiler (armcc). */ | |
4778 | ||
4779 | int | |
4780 | producer_is_realview (const char *producer) | |
4781 | { | |
4782 | static const char *const arm_idents[] = { | |
4783 | "ARM C Compiler, ADS", | |
4784 | "Thumb C Compiler, ADS", | |
4785 | "ARM C++ Compiler, ADS", | |
4786 | "Thumb C++ Compiler, ADS", | |
4787 | "ARM/Thumb C/C++ Compiler, RVCT", | |
4788 | "ARM C/C++ Compiler, RVCT" | |
4789 | }; | |
4790 | int i; | |
4791 | ||
4792 | if (producer == NULL) | |
4793 | return 0; | |
4794 | ||
4795 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
4796 | if (strncmp (producer, arm_idents[i], strlen (arm_idents[i])) == 0) | |
4797 | return 1; | |
4798 | ||
4799 | return 0; | |
4800 | } | |
ed0616c6 | 4801 | |
c906108c | 4802 | void |
fba45db2 | 4803 | _initialize_symtab (void) |
c906108c | 4804 | { |
1bedd215 AC |
4805 | add_info ("variables", variables_info, _("\ |
4806 | All global and static variable names, or those matching REGEXP.")); | |
c906108c | 4807 | if (dbx_commands) |
1bedd215 AC |
4808 | add_com ("whereis", class_info, variables_info, _("\ |
4809 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4810 | |
4811 | add_info ("functions", functions_info, | |
1bedd215 | 4812 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
4813 | |
4814 | /* FIXME: This command has at least the following problems: | |
4815 | 1. It prints builtin types (in a very strange and confusing fashion). | |
4816 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
4817 | typedef struct foo *FOO |
4818 | type_print prints "FOO" when we want to make it (in this situation) | |
4819 | print "struct foo *". | |
c906108c SS |
4820 | I also think "ptype" or "whatis" is more likely to be useful (but if |
4821 | there is much disagreement "info types" can be fixed). */ | |
4822 | add_info ("types", types_info, | |
1bedd215 | 4823 | _("All type names, or those matching REGEXP.")); |
c906108c | 4824 | |
c906108c | 4825 | add_info ("sources", sources_info, |
1bedd215 | 4826 | _("Source files in the program.")); |
c906108c SS |
4827 | |
4828 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 4829 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c SS |
4830 | |
4831 | if (xdb_commands) | |
4832 | { | |
1bedd215 AC |
4833 | add_com ("lf", class_info, sources_info, |
4834 | _("Source files in the program")); | |
4835 | add_com ("lg", class_info, variables_info, _("\ | |
4836 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4837 | } |
4838 | ||
717d2f5a JB |
4839 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
4840 | multiple_symbols_modes, &multiple_symbols_mode, | |
4841 | _("\ | |
4842 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
4843 | in an expression."), _("\ | |
4844 | Show how the debugger handles ambiguities in expressions."), _("\ | |
4845 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
4846 | NULL, NULL, &setlist, &showlist); | |
4847 | ||
c011a4f4 DE |
4848 | add_setshow_boolean_cmd ("basenames-may-differ", class_obscure, |
4849 | &basenames_may_differ, _("\ | |
4850 | Set whether a source file may have multiple base names."), _("\ | |
4851 | Show whether a source file may have multiple base names."), _("\ | |
4852 | (A \"base name\" is the name of a file with the directory part removed.\n\ | |
4853 | Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\ | |
4854 | If set, GDB will canonicalize file names (e.g., expand symlinks)\n\ | |
4855 | before comparing them. Canonicalization is an expensive operation,\n\ | |
4856 | but it allows the same file be known by more than one base name.\n\ | |
4857 | If not set (the default), all source files are assumed to have just\n\ | |
4858 | one base name, and gdb will do file name comparisons more efficiently."), | |
4859 | NULL, NULL, | |
4860 | &setlist, &showlist); | |
4861 | ||
ea53e89f | 4862 | observer_attach_executable_changed (symtab_observer_executable_changed); |
c906108c | 4863 | } |