Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009 |
083ae935 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "gdbcore.h" | |
26 | #include "frame.h" | |
27 | #include "target.h" | |
28 | #include "value.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "call-cmds.h" | |
88987551 | 33 | #include "gdb_regex.h" |
c906108c SS |
34 | #include "expression.h" |
35 | #include "language.h" | |
36 | #include "demangle.h" | |
37 | #include "inferior.h" | |
c5f0f3d0 | 38 | #include "linespec.h" |
0378c332 | 39 | #include "source.h" |
a7fdf62f | 40 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 41 | #include "objc-lang.h" |
1f8173e6 | 42 | #include "ada-lang.h" |
cd6c7346 | 43 | #include "p-lang.h" |
ff013f42 | 44 | #include "addrmap.h" |
c906108c | 45 | |
2de7ced7 DJ |
46 | #include "hashtab.h" |
47 | ||
04ea0df1 | 48 | #include "gdb_obstack.h" |
fe898f56 | 49 | #include "block.h" |
de4f826b | 50 | #include "dictionary.h" |
c906108c SS |
51 | |
52 | #include <sys/types.h> | |
53 | #include <fcntl.h> | |
54 | #include "gdb_string.h" | |
55 | #include "gdb_stat.h" | |
56 | #include <ctype.h> | |
015a42b4 | 57 | #include "cp-abi.h" |
71c25dea | 58 | #include "cp-support.h" |
ea53e89f | 59 | #include "observer.h" |
94277a38 | 60 | #include "gdb_assert.h" |
3a40aaa0 | 61 | #include "solist.h" |
9a044a89 TT |
62 | #include "macrotab.h" |
63 | #include "macroscope.h" | |
c906108c | 64 | |
c906108c SS |
65 | /* Prototypes for local functions */ |
66 | ||
a14ed312 | 67 | static void completion_list_add_name (char *, char *, int, char *, char *); |
c906108c | 68 | |
a14ed312 | 69 | static void rbreak_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void types_info (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void functions_info (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void variables_info (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void sources_info (char *, int); |
c906108c | 78 | |
d092d1a2 | 79 | static void output_source_filename (const char *, int *); |
c906108c | 80 | |
a14ed312 | 81 | static int find_line_common (struct linetable *, int, int *); |
c906108c | 82 | |
50641945 FN |
83 | /* This one is used by linespec.c */ |
84 | ||
85 | char *operator_chars (char *p, char **end); | |
86 | ||
3121eff0 | 87 | static struct symbol *lookup_symbol_aux (const char *name, |
5ad1c190 | 88 | const char *linkage_name, |
3121eff0 | 89 | const struct block *block, |
176620f1 | 90 | const domain_enum domain, |
53c5240f | 91 | enum language language, |
21b556f4 | 92 | int *is_a_field_of_this); |
fba7f19c | 93 | |
e4051eeb DC |
94 | static |
95 | struct symbol *lookup_symbol_aux_local (const char *name, | |
5ad1c190 | 96 | const char *linkage_name, |
e4051eeb | 97 | const struct block *block, |
21b556f4 | 98 | const domain_enum domain); |
8155455b DC |
99 | |
100 | static | |
101 | struct symbol *lookup_symbol_aux_symtabs (int block_index, | |
102 | const char *name, | |
5ad1c190 | 103 | const char *linkage_name, |
21b556f4 | 104 | const domain_enum domain); |
8155455b DC |
105 | |
106 | static | |
107 | struct symbol *lookup_symbol_aux_psymtabs (int block_index, | |
108 | const char *name, | |
5ad1c190 | 109 | const char *linkage_name, |
21b556f4 | 110 | const domain_enum domain); |
fba7f19c | 111 | |
a14ed312 | 112 | static int file_matches (char *, char **, int); |
c906108c | 113 | |
176620f1 | 114 | static void print_symbol_info (domain_enum, |
a14ed312 | 115 | struct symtab *, struct symbol *, int, char *); |
c906108c | 116 | |
a14ed312 | 117 | static void print_msymbol_info (struct minimal_symbol *); |
c906108c | 118 | |
176620f1 | 119 | static void symtab_symbol_info (char *, domain_enum, int); |
c906108c | 120 | |
a14ed312 | 121 | void _initialize_symtab (void); |
c906108c SS |
122 | |
123 | /* */ | |
124 | ||
717d2f5a JB |
125 | /* Allow the user to configure the debugger behavior with respect |
126 | to multiple-choice menus when more than one symbol matches during | |
127 | a symbol lookup. */ | |
128 | ||
7fc830e2 MK |
129 | const char multiple_symbols_ask[] = "ask"; |
130 | const char multiple_symbols_all[] = "all"; | |
131 | const char multiple_symbols_cancel[] = "cancel"; | |
717d2f5a JB |
132 | static const char *multiple_symbols_modes[] = |
133 | { | |
134 | multiple_symbols_ask, | |
135 | multiple_symbols_all, | |
136 | multiple_symbols_cancel, | |
137 | NULL | |
138 | }; | |
139 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
140 | ||
141 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
142 | ||
143 | const char * | |
144 | multiple_symbols_select_mode (void) | |
145 | { | |
146 | return multiple_symbols_mode; | |
147 | } | |
148 | ||
c906108c | 149 | /* Block in which the most recently searched-for symbol was found. |
9af17804 | 150 | Might be better to make this a parameter to lookup_symbol and |
c906108c SS |
151 | value_of_this. */ |
152 | ||
153 | const struct block *block_found; | |
154 | ||
c906108c SS |
155 | /* Check for a symtab of a specific name; first in symtabs, then in |
156 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
157 | in the symtab filename will also work. */ | |
158 | ||
1b15f1fa TT |
159 | struct symtab * |
160 | lookup_symtab (const char *name) | |
c906108c | 161 | { |
52f0bd74 AC |
162 | struct symtab *s; |
163 | struct partial_symtab *ps; | |
164 | struct objfile *objfile; | |
58d370e0 | 165 | char *real_path = NULL; |
f079a2e5 | 166 | char *full_path = NULL; |
58d370e0 TT |
167 | |
168 | /* Here we are interested in canonicalizing an absolute path, not | |
169 | absolutizing a relative path. */ | |
170 | if (IS_ABSOLUTE_PATH (name)) | |
f079a2e5 JB |
171 | { |
172 | full_path = xfullpath (name); | |
173 | make_cleanup (xfree, full_path); | |
174 | real_path = gdb_realpath (name); | |
175 | make_cleanup (xfree, real_path); | |
176 | } | |
c906108c | 177 | |
c5aa993b | 178 | got_symtab: |
c906108c SS |
179 | |
180 | /* First, search for an exact match */ | |
181 | ||
182 | ALL_SYMTABS (objfile, s) | |
58d370e0 | 183 | { |
a7fdf62f | 184 | if (FILENAME_CMP (name, s->filename) == 0) |
58d370e0 | 185 | { |
58d370e0 TT |
186 | return s; |
187 | } | |
9af17804 | 188 | |
58d370e0 TT |
189 | /* If the user gave us an absolute path, try to find the file in |
190 | this symtab and use its absolute path. */ | |
9af17804 | 191 | |
f079a2e5 JB |
192 | if (full_path != NULL) |
193 | { | |
09bcec80 BR |
194 | const char *fp = symtab_to_fullname (s); |
195 | if (fp != NULL && FILENAME_CMP (full_path, fp) == 0) | |
196 | { | |
197 | return s; | |
198 | } | |
f079a2e5 JB |
199 | } |
200 | ||
58d370e0 TT |
201 | if (real_path != NULL) |
202 | { | |
09bcec80 BR |
203 | char *fullname = symtab_to_fullname (s); |
204 | if (fullname != NULL) | |
205 | { | |
206 | char *rp = gdb_realpath (fullname); | |
207 | make_cleanup (xfree, rp); | |
208 | if (FILENAME_CMP (real_path, rp) == 0) | |
209 | { | |
210 | return s; | |
211 | } | |
212 | } | |
58d370e0 TT |
213 | } |
214 | } | |
215 | ||
c906108c SS |
216 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
217 | ||
caadab2c | 218 | if (lbasename (name) == name) |
c906108c | 219 | ALL_SYMTABS (objfile, s) |
c5aa993b | 220 | { |
31889e00 | 221 | if (FILENAME_CMP (lbasename (s->filename), name) == 0) |
c5aa993b JM |
222 | return s; |
223 | } | |
c906108c SS |
224 | |
225 | /* Same search rules as above apply here, but now we look thru the | |
226 | psymtabs. */ | |
227 | ||
228 | ps = lookup_partial_symtab (name); | |
229 | if (!ps) | |
230 | return (NULL); | |
231 | ||
c5aa993b | 232 | if (ps->readin) |
8a3fe4f8 | 233 | error (_("Internal: readin %s pst for `%s' found when no symtab found."), |
c5aa993b | 234 | ps->filename, name); |
c906108c SS |
235 | |
236 | s = PSYMTAB_TO_SYMTAB (ps); | |
237 | ||
238 | if (s) | |
239 | return s; | |
240 | ||
241 | /* At this point, we have located the psymtab for this file, but | |
242 | the conversion to a symtab has failed. This usually happens | |
243 | when we are looking up an include file. In this case, | |
244 | PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has | |
245 | been created. So, we need to run through the symtabs again in | |
246 | order to find the file. | |
247 | XXX - This is a crock, and should be fixed inside of the the | |
248 | symbol parsing routines. */ | |
249 | goto got_symtab; | |
250 | } | |
251 | ||
c906108c SS |
252 | /* Lookup the partial symbol table of a source file named NAME. |
253 | *If* there is no '/' in the name, a match after a '/' | |
254 | in the psymtab filename will also work. */ | |
255 | ||
256 | struct partial_symtab * | |
1f8cc6db | 257 | lookup_partial_symtab (const char *name) |
c906108c | 258 | { |
52f0bd74 AC |
259 | struct partial_symtab *pst; |
260 | struct objfile *objfile; | |
f079a2e5 | 261 | char *full_path = NULL; |
58d370e0 TT |
262 | char *real_path = NULL; |
263 | ||
264 | /* Here we are interested in canonicalizing an absolute path, not | |
265 | absolutizing a relative path. */ | |
266 | if (IS_ABSOLUTE_PATH (name)) | |
f079a2e5 JB |
267 | { |
268 | full_path = xfullpath (name); | |
269 | make_cleanup (xfree, full_path); | |
270 | real_path = gdb_realpath (name); | |
271 | make_cleanup (xfree, real_path); | |
272 | } | |
c5aa993b | 273 | |
c906108c | 274 | ALL_PSYMTABS (objfile, pst) |
c5aa993b | 275 | { |
a7fdf62f | 276 | if (FILENAME_CMP (name, pst->filename) == 0) |
c5aa993b JM |
277 | { |
278 | return (pst); | |
279 | } | |
f079a2e5 | 280 | |
58d370e0 TT |
281 | /* If the user gave us an absolute path, try to find the file in |
282 | this symtab and use its absolute path. */ | |
f079a2e5 | 283 | if (full_path != NULL) |
58d370e0 | 284 | { |
d9c8471e | 285 | psymtab_to_fullname (pst); |
58d370e0 | 286 | if (pst->fullname != NULL |
f079a2e5 | 287 | && FILENAME_CMP (full_path, pst->fullname) == 0) |
58d370e0 | 288 | { |
58d370e0 TT |
289 | return pst; |
290 | } | |
291 | } | |
c906108c | 292 | |
f079a2e5 JB |
293 | if (real_path != NULL) |
294 | { | |
295 | char *rp = NULL; | |
d9c8471e | 296 | psymtab_to_fullname (pst); |
f079a2e5 JB |
297 | if (pst->fullname != NULL) |
298 | { | |
299 | rp = gdb_realpath (pst->fullname); | |
300 | make_cleanup (xfree, rp); | |
301 | } | |
302 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
303 | { | |
304 | return pst; | |
305 | } | |
306 | } | |
307 | } | |
58d370e0 | 308 | |
c906108c SS |
309 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
310 | ||
caadab2c | 311 | if (lbasename (name) == name) |
c906108c | 312 | ALL_PSYMTABS (objfile, pst) |
c5aa993b | 313 | { |
31889e00 | 314 | if (FILENAME_CMP (lbasename (pst->filename), name) == 0) |
c5aa993b JM |
315 | return (pst); |
316 | } | |
c906108c SS |
317 | |
318 | return (NULL); | |
319 | } | |
320 | \f | |
321 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
322 | full method name, which consist of the class name (from T), the unadorned | |
323 | method name from METHOD_ID, and the signature for the specific overload, | |
324 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ | |
325 | ||
326 | char * | |
fba45db2 | 327 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
328 | { |
329 | int mangled_name_len; | |
330 | char *mangled_name; | |
331 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
332 | struct fn_field *method = &f[signature_id]; | |
333 | char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); | |
334 | char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); | |
335 | char *newname = type_name_no_tag (type); | |
336 | ||
337 | /* Does the form of physname indicate that it is the full mangled name | |
338 | of a constructor (not just the args)? */ | |
339 | int is_full_physname_constructor; | |
340 | ||
341 | int is_constructor; | |
015a42b4 | 342 | int is_destructor = is_destructor_name (physname); |
c906108c SS |
343 | /* Need a new type prefix. */ |
344 | char *const_prefix = method->is_const ? "C" : ""; | |
345 | char *volatile_prefix = method->is_volatile ? "V" : ""; | |
346 | char buf[20]; | |
347 | int len = (newname == NULL ? 0 : strlen (newname)); | |
348 | ||
43630227 PS |
349 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
350 | or an operator name. */ | |
351 | if ((physname[0] == '_' && physname[1] == 'Z') | |
352 | || is_operator_name (field_name)) | |
235d1e03 EZ |
353 | return xstrdup (physname); |
354 | ||
015a42b4 | 355 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c SS |
356 | |
357 | is_constructor = | |
6314a349 | 358 | is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0); |
c906108c SS |
359 | |
360 | if (!is_destructor) | |
c5aa993b | 361 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
c906108c SS |
362 | |
363 | if (is_destructor || is_full_physname_constructor) | |
364 | { | |
c5aa993b JM |
365 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
366 | strcpy (mangled_name, physname); | |
c906108c SS |
367 | return mangled_name; |
368 | } | |
369 | ||
370 | if (len == 0) | |
371 | { | |
372 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); | |
373 | } | |
374 | else if (physname[0] == 't' || physname[0] == 'Q') | |
375 | { | |
376 | /* The physname for template and qualified methods already includes | |
c5aa993b | 377 | the class name. */ |
c906108c SS |
378 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
379 | newname = NULL; | |
380 | len = 0; | |
381 | } | |
382 | else | |
383 | { | |
384 | sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); | |
385 | } | |
386 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 387 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 388 | |
c906108c | 389 | { |
c5aa993b | 390 | mangled_name = (char *) xmalloc (mangled_name_len); |
c906108c SS |
391 | if (is_constructor) |
392 | mangled_name[0] = '\0'; | |
393 | else | |
394 | strcpy (mangled_name, field_name); | |
395 | } | |
396 | strcat (mangled_name, buf); | |
397 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
398 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c5aa993b | 399 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
400 | if (newname != NULL) |
401 | strcat (mangled_name, newname); | |
402 | ||
403 | strcat (mangled_name, physname); | |
404 | return (mangled_name); | |
405 | } | |
12af6855 JB |
406 | |
407 | \f | |
89aad1f9 EZ |
408 | /* Initialize the language dependent portion of a symbol |
409 | depending upon the language for the symbol. */ | |
410 | void | |
411 | symbol_init_language_specific (struct general_symbol_info *gsymbol, | |
412 | enum language language) | |
413 | { | |
414 | gsymbol->language = language; | |
415 | if (gsymbol->language == language_cplus | |
5784d15e AF |
416 | || gsymbol->language == language_java |
417 | || gsymbol->language == language_objc) | |
89aad1f9 EZ |
418 | { |
419 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
420 | } | |
89aad1f9 EZ |
421 | else |
422 | { | |
423 | memset (&gsymbol->language_specific, 0, | |
424 | sizeof (gsymbol->language_specific)); | |
425 | } | |
426 | } | |
427 | ||
2de7ced7 DJ |
428 | /* Functions to initialize a symbol's mangled name. */ |
429 | ||
430 | /* Create the hash table used for demangled names. Each hash entry is | |
431 | a pair of strings; one for the mangled name and one for the demangled | |
432 | name. The entry is hashed via just the mangled name. */ | |
433 | ||
434 | static void | |
435 | create_demangled_names_hash (struct objfile *objfile) | |
436 | { | |
437 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 438 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
439 | Choosing a much larger table size wastes memory, and saves only about |
440 | 1% in symbol reading. */ | |
441 | ||
aa2ee5f6 | 442 | objfile->demangled_names_hash = htab_create_alloc |
2de7ced7 | 443 | (256, htab_hash_string, (int (*) (const void *, const void *)) streq, |
aa2ee5f6 | 444 | NULL, xcalloc, xfree); |
2de7ced7 | 445 | } |
12af6855 | 446 | |
2de7ced7 | 447 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
448 | language of that symbol. If the language is set to language_auto, |
449 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
450 | then set the language appropriately. The returned name is allocated |
451 | by the demangler and should be xfree'd. */ | |
12af6855 | 452 | |
2de7ced7 DJ |
453 | static char * |
454 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
455 | const char *mangled) | |
12af6855 | 456 | { |
12af6855 JB |
457 | char *demangled = NULL; |
458 | ||
459 | if (gsymbol->language == language_unknown) | |
460 | gsymbol->language = language_auto; | |
1bae87b9 AF |
461 | |
462 | if (gsymbol->language == language_objc | |
463 | || gsymbol->language == language_auto) | |
464 | { | |
465 | demangled = | |
466 | objc_demangle (mangled, 0); | |
467 | if (demangled != NULL) | |
468 | { | |
469 | gsymbol->language = language_objc; | |
470 | return demangled; | |
471 | } | |
472 | } | |
12af6855 JB |
473 | if (gsymbol->language == language_cplus |
474 | || gsymbol->language == language_auto) | |
475 | { | |
476 | demangled = | |
2de7ced7 | 477 | cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); |
12af6855 | 478 | if (demangled != NULL) |
2de7ced7 DJ |
479 | { |
480 | gsymbol->language = language_cplus; | |
481 | return demangled; | |
482 | } | |
12af6855 JB |
483 | } |
484 | if (gsymbol->language == language_java) | |
485 | { | |
486 | demangled = | |
2de7ced7 | 487 | cplus_demangle (mangled, |
12af6855 JB |
488 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); |
489 | if (demangled != NULL) | |
2de7ced7 DJ |
490 | { |
491 | gsymbol->language = language_java; | |
492 | return demangled; | |
493 | } | |
494 | } | |
495 | return NULL; | |
496 | } | |
497 | ||
980cae7a DC |
498 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
499 | on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE | |
4a146b47 | 500 | is used, and the memory comes from that objfile's objfile_obstack. |
980cae7a DC |
501 | LINKAGE_NAME is copied, so the pointer can be discarded after |
502 | calling this function. */ | |
2de7ced7 | 503 | |
d2a52b27 DC |
504 | /* We have to be careful when dealing with Java names: when we run |
505 | into a Java minimal symbol, we don't know it's a Java symbol, so it | |
506 | gets demangled as a C++ name. This is unfortunate, but there's not | |
507 | much we can do about it: but when demangling partial symbols and | |
508 | regular symbols, we'd better not reuse the wrong demangled name. | |
509 | (See PR gdb/1039.) We solve this by putting a distinctive prefix | |
510 | on Java names when storing them in the hash table. */ | |
511 | ||
512 | /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I | |
513 | don't mind the Java prefix so much: different languages have | |
514 | different demangling requirements, so it's only natural that we | |
515 | need to keep language data around in our demangling cache. But | |
516 | it's not good that the minimal symbol has the wrong demangled name. | |
517 | Unfortunately, I can't think of any easy solution to that | |
518 | problem. */ | |
519 | ||
520 | #define JAVA_PREFIX "##JAVA$$" | |
521 | #define JAVA_PREFIX_LEN 8 | |
522 | ||
2de7ced7 DJ |
523 | void |
524 | symbol_set_names (struct general_symbol_info *gsymbol, | |
980cae7a | 525 | const char *linkage_name, int len, struct objfile *objfile) |
2de7ced7 DJ |
526 | { |
527 | char **slot; | |
980cae7a DC |
528 | /* A 0-terminated copy of the linkage name. */ |
529 | const char *linkage_name_copy; | |
d2a52b27 DC |
530 | /* A copy of the linkage name that might have a special Java prefix |
531 | added to it, for use when looking names up in the hash table. */ | |
532 | const char *lookup_name; | |
533 | /* The length of lookup_name. */ | |
534 | int lookup_len; | |
2de7ced7 DJ |
535 | |
536 | if (objfile->demangled_names_hash == NULL) | |
537 | create_demangled_names_hash (objfile); | |
538 | ||
b06ead72 JB |
539 | if (gsymbol->language == language_ada) |
540 | { | |
541 | /* In Ada, we do the symbol lookups using the mangled name, so | |
542 | we can save some space by not storing the demangled name. | |
543 | ||
544 | As a side note, we have also observed some overlap between | |
545 | the C++ mangling and Ada mangling, similarly to what has | |
546 | been observed with Java. Because we don't store the demangled | |
547 | name with the symbol, we don't need to use the same trick | |
548 | as Java. */ | |
549 | gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1); | |
550 | memcpy (gsymbol->name, linkage_name, len); | |
551 | gsymbol->name[len] = '\0'; | |
552 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
553 | ||
554 | return; | |
555 | } | |
556 | ||
980cae7a DC |
557 | /* The stabs reader generally provides names that are not |
558 | NUL-terminated; most of the other readers don't do this, so we | |
d2a52b27 DC |
559 | can just use the given copy, unless we're in the Java case. */ |
560 | if (gsymbol->language == language_java) | |
561 | { | |
562 | char *alloc_name; | |
563 | lookup_len = len + JAVA_PREFIX_LEN; | |
564 | ||
565 | alloc_name = alloca (lookup_len + 1); | |
566 | memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN); | |
567 | memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len); | |
568 | alloc_name[lookup_len] = '\0'; | |
569 | ||
570 | lookup_name = alloc_name; | |
571 | linkage_name_copy = alloc_name + JAVA_PREFIX_LEN; | |
572 | } | |
573 | else if (linkage_name[len] != '\0') | |
2de7ced7 | 574 | { |
980cae7a | 575 | char *alloc_name; |
d2a52b27 | 576 | lookup_len = len; |
980cae7a | 577 | |
d2a52b27 | 578 | alloc_name = alloca (lookup_len + 1); |
980cae7a | 579 | memcpy (alloc_name, linkage_name, len); |
d2a52b27 | 580 | alloc_name[lookup_len] = '\0'; |
980cae7a | 581 | |
d2a52b27 | 582 | lookup_name = alloc_name; |
980cae7a | 583 | linkage_name_copy = alloc_name; |
2de7ced7 DJ |
584 | } |
585 | else | |
980cae7a | 586 | { |
d2a52b27 DC |
587 | lookup_len = len; |
588 | lookup_name = linkage_name; | |
980cae7a DC |
589 | linkage_name_copy = linkage_name; |
590 | } | |
2de7ced7 | 591 | |
980cae7a | 592 | slot = (char **) htab_find_slot (objfile->demangled_names_hash, |
d2a52b27 | 593 | lookup_name, INSERT); |
2de7ced7 DJ |
594 | |
595 | /* If this name is not in the hash table, add it. */ | |
596 | if (*slot == NULL) | |
597 | { | |
980cae7a DC |
598 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
599 | linkage_name_copy); | |
2de7ced7 DJ |
600 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
601 | ||
602 | /* If there is a demangled name, place it right after the mangled name. | |
603 | Otherwise, just place a second zero byte after the end of the mangled | |
604 | name. */ | |
4a146b47 | 605 | *slot = obstack_alloc (&objfile->objfile_obstack, |
d2a52b27 DC |
606 | lookup_len + demangled_len + 2); |
607 | memcpy (*slot, lookup_name, lookup_len + 1); | |
980cae7a | 608 | if (demangled_name != NULL) |
2de7ced7 | 609 | { |
d2a52b27 | 610 | memcpy (*slot + lookup_len + 1, demangled_name, demangled_len + 1); |
2de7ced7 DJ |
611 | xfree (demangled_name); |
612 | } | |
613 | else | |
d2a52b27 | 614 | (*slot)[lookup_len + 1] = '\0'; |
2de7ced7 DJ |
615 | } |
616 | ||
d2a52b27 DC |
617 | gsymbol->name = *slot + lookup_len - len; |
618 | if ((*slot)[lookup_len + 1] != '\0') | |
2de7ced7 | 619 | gsymbol->language_specific.cplus_specific.demangled_name |
d2a52b27 | 620 | = &(*slot)[lookup_len + 1]; |
2de7ced7 DJ |
621 | else |
622 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
623 | } | |
624 | ||
22abf04a DC |
625 | /* Return the source code name of a symbol. In languages where |
626 | demangling is necessary, this is the demangled name. */ | |
627 | ||
628 | char * | |
629 | symbol_natural_name (const struct general_symbol_info *gsymbol) | |
630 | { | |
9af17804 | 631 | switch (gsymbol->language) |
22abf04a | 632 | { |
1f8173e6 PH |
633 | case language_cplus: |
634 | case language_java: | |
635 | case language_objc: | |
636 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
637 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
638 | break; | |
639 | case language_ada: | |
640 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
641 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
642 | else | |
643 | return ada_decode_symbol (gsymbol); | |
644 | break; | |
645 | default: | |
646 | break; | |
22abf04a | 647 | } |
1f8173e6 | 648 | return gsymbol->name; |
22abf04a DC |
649 | } |
650 | ||
9cc0d196 EZ |
651 | /* Return the demangled name for a symbol based on the language for |
652 | that symbol. If no demangled name exists, return NULL. */ | |
653 | char * | |
df8a16a1 | 654 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 655 | { |
9af17804 | 656 | switch (gsymbol->language) |
1f8173e6 PH |
657 | { |
658 | case language_cplus: | |
659 | case language_java: | |
660 | case language_objc: | |
661 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
662 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
663 | break; | |
664 | case language_ada: | |
665 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
666 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
667 | else | |
668 | return ada_decode_symbol (gsymbol); | |
669 | break; | |
670 | default: | |
671 | break; | |
672 | } | |
673 | return NULL; | |
9cc0d196 | 674 | } |
fe39c653 | 675 | |
4725b721 PH |
676 | /* Return the search name of a symbol---generally the demangled or |
677 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 678 | If there is no distinct demangled name, then returns the same value |
4725b721 | 679 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
fc062ac6 JB |
680 | char * |
681 | symbol_search_name (const struct general_symbol_info *gsymbol) | |
682 | { | |
1f8173e6 PH |
683 | if (gsymbol->language == language_ada) |
684 | return gsymbol->name; | |
685 | else | |
686 | return symbol_natural_name (gsymbol); | |
4725b721 PH |
687 | } |
688 | ||
fe39c653 EZ |
689 | /* Initialize the structure fields to zero values. */ |
690 | void | |
691 | init_sal (struct symtab_and_line *sal) | |
692 | { | |
693 | sal->symtab = 0; | |
694 | sal->section = 0; | |
695 | sal->line = 0; | |
696 | sal->pc = 0; | |
697 | sal->end = 0; | |
ed0616c6 VP |
698 | sal->explicit_pc = 0; |
699 | sal->explicit_line = 0; | |
fe39c653 | 700 | } |
c906108c SS |
701 | \f |
702 | ||
94277a38 DJ |
703 | /* Return 1 if the two sections are the same, or if they could |
704 | plausibly be copies of each other, one in an original object | |
705 | file and another in a separated debug file. */ | |
706 | ||
707 | int | |
714835d5 UW |
708 | matching_obj_sections (struct obj_section *obj_first, |
709 | struct obj_section *obj_second) | |
94277a38 | 710 | { |
714835d5 UW |
711 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
712 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
713 | struct objfile *obj; |
714 | ||
715 | /* If they're the same section, then they match. */ | |
716 | if (first == second) | |
717 | return 1; | |
718 | ||
719 | /* If either is NULL, give up. */ | |
720 | if (first == NULL || second == NULL) | |
721 | return 0; | |
722 | ||
723 | /* This doesn't apply to absolute symbols. */ | |
724 | if (first->owner == NULL || second->owner == NULL) | |
725 | return 0; | |
726 | ||
727 | /* If they're in the same object file, they must be different sections. */ | |
728 | if (first->owner == second->owner) | |
729 | return 0; | |
730 | ||
731 | /* Check whether the two sections are potentially corresponding. They must | |
732 | have the same size, address, and name. We can't compare section indexes, | |
733 | which would be more reliable, because some sections may have been | |
734 | stripped. */ | |
735 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
736 | return 0; | |
737 | ||
818f79f6 | 738 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 739 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
740 | - bfd_get_start_address (first->owner) |
741 | != bfd_get_section_vma (second->owner, second) | |
742 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
743 | return 0; |
744 | ||
745 | if (bfd_get_section_name (first->owner, first) == NULL | |
746 | || bfd_get_section_name (second->owner, second) == NULL | |
747 | || strcmp (bfd_get_section_name (first->owner, first), | |
748 | bfd_get_section_name (second->owner, second)) != 0) | |
749 | return 0; | |
750 | ||
751 | /* Otherwise check that they are in corresponding objfiles. */ | |
752 | ||
753 | ALL_OBJFILES (obj) | |
754 | if (obj->obfd == first->owner) | |
755 | break; | |
756 | gdb_assert (obj != NULL); | |
757 | ||
758 | if (obj->separate_debug_objfile != NULL | |
759 | && obj->separate_debug_objfile->obfd == second->owner) | |
760 | return 1; | |
761 | if (obj->separate_debug_objfile_backlink != NULL | |
762 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
763 | return 1; | |
764 | ||
765 | return 0; | |
766 | } | |
c5aa993b | 767 | |
ff013f42 JK |
768 | /* Find which partial symtab contains PC and SECTION starting at psymtab PST. |
769 | We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */ | |
770 | ||
2c0b251b | 771 | static struct partial_symtab * |
714835d5 | 772 | find_pc_sect_psymtab_closer (CORE_ADDR pc, struct obj_section *section, |
ff013f42 JK |
773 | struct partial_symtab *pst, |
774 | struct minimal_symbol *msymbol) | |
775 | { | |
776 | struct objfile *objfile = pst->objfile; | |
777 | struct partial_symtab *tpst; | |
778 | struct partial_symtab *best_pst = pst; | |
779 | CORE_ADDR best_addr = pst->textlow; | |
780 | ||
781 | /* An objfile that has its functions reordered might have | |
782 | many partial symbol tables containing the PC, but | |
783 | we want the partial symbol table that contains the | |
784 | function containing the PC. */ | |
785 | if (!(objfile->flags & OBJF_REORDERED) && | |
786 | section == 0) /* can't validate section this way */ | |
787 | return pst; | |
788 | ||
789 | if (msymbol == NULL) | |
790 | return (pst); | |
791 | ||
792 | /* The code range of partial symtabs sometimes overlap, so, in | |
793 | the loop below, we need to check all partial symtabs and | |
794 | find the one that fits better for the given PC address. We | |
795 | select the partial symtab that contains a symbol whose | |
796 | address is closest to the PC address. By closest we mean | |
797 | that find_pc_sect_symbol returns the symbol with address | |
798 | that is closest and still less than the given PC. */ | |
799 | for (tpst = pst; tpst != NULL; tpst = tpst->next) | |
800 | { | |
801 | if (pc >= tpst->textlow && pc < tpst->texthigh) | |
802 | { | |
803 | struct partial_symbol *p; | |
804 | CORE_ADDR this_addr; | |
805 | ||
806 | /* NOTE: This assumes that every psymbol has a | |
807 | corresponding msymbol, which is not necessarily | |
808 | true; the debug info might be much richer than the | |
809 | object's symbol table. */ | |
810 | p = find_pc_sect_psymbol (tpst, pc, section); | |
811 | if (p != NULL | |
812 | && SYMBOL_VALUE_ADDRESS (p) | |
813 | == SYMBOL_VALUE_ADDRESS (msymbol)) | |
814 | return tpst; | |
815 | ||
816 | /* Also accept the textlow value of a psymtab as a | |
817 | "symbol", to provide some support for partial | |
818 | symbol tables with line information but no debug | |
819 | symbols (e.g. those produced by an assembler). */ | |
820 | if (p != NULL) | |
821 | this_addr = SYMBOL_VALUE_ADDRESS (p); | |
822 | else | |
823 | this_addr = tpst->textlow; | |
824 | ||
825 | /* Check whether it is closer than our current | |
826 | BEST_ADDR. Since this symbol address is | |
827 | necessarily lower or equal to PC, the symbol closer | |
828 | to PC is the symbol which address is the highest. | |
829 | This way we return the psymtab which contains such | |
830 | best match symbol. This can help in cases where the | |
831 | symbol information/debuginfo is not complete, like | |
832 | for instance on IRIX6 with gcc, where no debug info | |
833 | is emitted for statics. (See also the nodebug.exp | |
834 | testcase.) */ | |
835 | if (this_addr > best_addr) | |
836 | { | |
837 | best_addr = this_addr; | |
838 | best_pst = tpst; | |
839 | } | |
840 | } | |
841 | } | |
842 | return best_pst; | |
843 | } | |
844 | ||
ccefbec3 EZ |
845 | /* Find which partial symtab contains PC and SECTION. Return 0 if |
846 | none. We return the psymtab that contains a symbol whose address | |
847 | exactly matches PC, or, if we cannot find an exact match, the | |
848 | psymtab that contains a symbol whose address is closest to PC. */ | |
c906108c | 849 | struct partial_symtab * |
714835d5 | 850 | find_pc_sect_psymtab (CORE_ADDR pc, struct obj_section *section) |
c906108c | 851 | { |
52f0bd74 | 852 | struct objfile *objfile; |
8a48e967 DJ |
853 | struct minimal_symbol *msymbol; |
854 | ||
855 | /* If we know that this is not a text address, return failure. This is | |
856 | necessary because we loop based on texthigh and textlow, which do | |
857 | not include the data ranges. */ | |
858 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
859 | if (msymbol | |
712f90be TT |
860 | && (MSYMBOL_TYPE (msymbol) == mst_data |
861 | || MSYMBOL_TYPE (msymbol) == mst_bss | |
862 | || MSYMBOL_TYPE (msymbol) == mst_abs | |
863 | || MSYMBOL_TYPE (msymbol) == mst_file_data | |
864 | || MSYMBOL_TYPE (msymbol) == mst_file_bss)) | |
8a48e967 | 865 | return NULL; |
c906108c | 866 | |
ff013f42 JK |
867 | /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity |
868 | than the later used TEXTLOW/TEXTHIGH one. */ | |
869 | ||
870 | ALL_OBJFILES (objfile) | |
871 | if (objfile->psymtabs_addrmap != NULL) | |
c5aa993b | 872 | { |
ff013f42 JK |
873 | struct partial_symtab *pst; |
874 | ||
875 | pst = addrmap_find (objfile->psymtabs_addrmap, pc); | |
876 | if (pst != NULL) | |
c5aa993b | 877 | { |
907fc202 | 878 | /* FIXME: addrmaps currently do not handle overlayed sections, |
9af17804 | 879 | so fall back to the non-addrmap case if we're debugging |
907fc202 UW |
880 | overlays and the addrmap returned the wrong section. */ |
881 | if (overlay_debugging && msymbol && section) | |
882 | { | |
883 | struct partial_symbol *p; | |
884 | /* NOTE: This assumes that every psymbol has a | |
885 | corresponding msymbol, which is not necessarily | |
886 | true; the debug info might be much richer than the | |
887 | object's symbol table. */ | |
888 | p = find_pc_sect_psymbol (pst, pc, section); | |
889 | if (!p | |
890 | || SYMBOL_VALUE_ADDRESS (p) | |
891 | != SYMBOL_VALUE_ADDRESS (msymbol)) | |
892 | continue; | |
893 | } | |
894 | ||
ff013f42 JK |
895 | /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as |
896 | PSYMTABS_ADDRMAP we used has already the best 1-byte | |
897 | granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into | |
898 | a worse chosen section due to the TEXTLOW/TEXTHIGH ranges | |
899 | overlap. */ | |
900 | ||
901 | return pst; | |
c5aa993b | 902 | } |
c5aa993b | 903 | } |
ff013f42 JK |
904 | |
905 | /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs | |
906 | which still have no corresponding full SYMTABs read. But it is not | |
907 | present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB | |
908 | so far. */ | |
909 | ||
910 | ALL_OBJFILES (objfile) | |
911 | { | |
912 | struct partial_symtab *pst; | |
913 | ||
914 | /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of | |
915 | its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying | |
916 | debug info type in single OBJFILE. */ | |
917 | ||
918 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
919 | if (pc >= pst->textlow && pc < pst->texthigh) | |
920 | { | |
921 | struct partial_symtab *best_pst; | |
922 | ||
923 | best_pst = find_pc_sect_psymtab_closer (pc, section, pst, | |
924 | msymbol); | |
925 | if (best_pst != NULL) | |
926 | return best_pst; | |
927 | } | |
928 | } | |
929 | ||
930 | return NULL; | |
c906108c SS |
931 | } |
932 | ||
9af17804 | 933 | /* Find which partial symtab contains PC. Return 0 if none. |
c906108c SS |
934 | Backward compatibility, no section */ |
935 | ||
936 | struct partial_symtab * | |
fba45db2 | 937 | find_pc_psymtab (CORE_ADDR pc) |
c906108c SS |
938 | { |
939 | return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc)); | |
940 | } | |
941 | ||
9af17804 | 942 | /* Find which partial symbol within a psymtab matches PC and SECTION. |
c906108c SS |
943 | Return 0 if none. Check all psymtabs if PSYMTAB is 0. */ |
944 | ||
945 | struct partial_symbol * | |
fba45db2 | 946 | find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc, |
714835d5 | 947 | struct obj_section *section) |
c906108c SS |
948 | { |
949 | struct partial_symbol *best = NULL, *p, **pp; | |
950 | CORE_ADDR best_pc; | |
c5aa993b | 951 | |
c906108c SS |
952 | if (!psymtab) |
953 | psymtab = find_pc_sect_psymtab (pc, section); | |
954 | if (!psymtab) | |
955 | return 0; | |
956 | ||
957 | /* Cope with programs that start at address 0 */ | |
958 | best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; | |
959 | ||
960 | /* Search the global symbols as well as the static symbols, so that | |
961 | find_pc_partial_function doesn't use a minimal symbol and thus | |
962 | cache a bad endaddr. */ | |
963 | for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset; | |
c5aa993b JM |
964 | (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset) |
965 | < psymtab->n_global_syms); | |
c906108c SS |
966 | pp++) |
967 | { | |
968 | p = *pp; | |
176620f1 | 969 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN |
c906108c SS |
970 | && SYMBOL_CLASS (p) == LOC_BLOCK |
971 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
972 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
973 | || (psymtab->textlow == 0 | |
974 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) | |
975 | { | |
c5aa993b | 976 | if (section) /* match on a specific section */ |
c906108c SS |
977 | { |
978 | fixup_psymbol_section (p, psymtab->objfile); | |
714835d5 | 979 | if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section)) |
c906108c SS |
980 | continue; |
981 | } | |
982 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
983 | best = p; | |
984 | } | |
985 | } | |
986 | ||
987 | for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset; | |
c5aa993b JM |
988 | (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset) |
989 | < psymtab->n_static_syms); | |
c906108c SS |
990 | pp++) |
991 | { | |
992 | p = *pp; | |
176620f1 | 993 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN |
c906108c SS |
994 | && SYMBOL_CLASS (p) == LOC_BLOCK |
995 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
996 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
c5aa993b | 997 | || (psymtab->textlow == 0 |
c906108c SS |
998 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
999 | { | |
c5aa993b | 1000 | if (section) /* match on a specific section */ |
c906108c SS |
1001 | { |
1002 | fixup_psymbol_section (p, psymtab->objfile); | |
714835d5 | 1003 | if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section)) |
c906108c SS |
1004 | continue; |
1005 | } | |
1006 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
1007 | best = p; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | return best; | |
1012 | } | |
1013 | ||
9af17804 | 1014 | /* Find which partial symbol within a psymtab matches PC. Return 0 if none. |
c906108c SS |
1015 | Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */ |
1016 | ||
1017 | struct partial_symbol * | |
fba45db2 | 1018 | find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc) |
c906108c SS |
1019 | { |
1020 | return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc)); | |
1021 | } | |
1022 | \f | |
1023 | /* Debug symbols usually don't have section information. We need to dig that | |
1024 | out of the minimal symbols and stash that in the debug symbol. */ | |
1025 | ||
1026 | static void | |
907fc202 UW |
1027 | fixup_section (struct general_symbol_info *ginfo, |
1028 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
1029 | { |
1030 | struct minimal_symbol *msym; | |
c906108c | 1031 | |
bccdca4a UW |
1032 | /* First, check whether a minimal symbol with the same name exists |
1033 | and points to the same address. The address check is required | |
1034 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1035 | point to the function descriptor, while the debug symbol will | |
1036 | point to the actual function code. */ | |
907fc202 UW |
1037 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
1038 | if (msym) | |
7a78d0ee | 1039 | { |
714835d5 | 1040 | ginfo->obj_section = SYMBOL_OBJ_SECTION (msym); |
7a78d0ee KB |
1041 | ginfo->section = SYMBOL_SECTION (msym); |
1042 | } | |
907fc202 | 1043 | else |
19e2d14b KB |
1044 | { |
1045 | /* Static, function-local variables do appear in the linker | |
1046 | (minimal) symbols, but are frequently given names that won't | |
1047 | be found via lookup_minimal_symbol(). E.g., it has been | |
1048 | observed in frv-uclinux (ELF) executables that a static, | |
1049 | function-local variable named "foo" might appear in the | |
1050 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1051 | point in attempting to extend the lookup-by-name mechanism to | |
1052 | handle this case due to the fact that there can be multiple | |
1053 | names. | |
9af17804 | 1054 | |
19e2d14b KB |
1055 | So, instead, search the section table when lookup by name has |
1056 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1057 | been relocated. If so, the relocation offset (i.e. the | |
1058 | ANOFFSET value) needs to be subtracted from these values when | |
1059 | performing the comparison. We unconditionally subtract it, | |
1060 | because, when no relocation has been performed, the ANOFFSET | |
1061 | value will simply be zero. | |
9af17804 | 1062 | |
19e2d14b KB |
1063 | The address of the symbol whose section we're fixing up HAS |
1064 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1065 | the section isn't yet known and knowing the section is | |
1066 | necessary in order to add the correct relocation value. In | |
1067 | other words, we wouldn't even be in this function (attempting | |
1068 | to compute the section) if it were already known. | |
1069 | ||
1070 | Note that it is possible to search the minimal symbols | |
1071 | (subtracting the relocation value if necessary) to find the | |
1072 | matching minimal symbol, but this is overkill and much less | |
1073 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
1074 | symbol, only its section. |
1075 | ||
19e2d14b KB |
1076 | Note that this technique (of doing a section table search) |
1077 | can fail when unrelocated section addresses overlap. For | |
1078 | this reason, we still attempt a lookup by name prior to doing | |
1079 | a search of the section table. */ | |
9af17804 | 1080 | |
19e2d14b | 1081 | struct obj_section *s; |
19e2d14b KB |
1082 | ALL_OBJFILE_OSECTIONS (objfile, s) |
1083 | { | |
1084 | int idx = s->the_bfd_section->index; | |
1085 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); | |
1086 | ||
f1f6aadf PA |
1087 | if (obj_section_addr (s) - offset <= addr |
1088 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 1089 | { |
714835d5 | 1090 | ginfo->obj_section = s; |
19e2d14b KB |
1091 | ginfo->section = idx; |
1092 | return; | |
1093 | } | |
1094 | } | |
1095 | } | |
c906108c SS |
1096 | } |
1097 | ||
1098 | struct symbol * | |
fba45db2 | 1099 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 1100 | { |
907fc202 UW |
1101 | CORE_ADDR addr; |
1102 | ||
c906108c SS |
1103 | if (!sym) |
1104 | return NULL; | |
1105 | ||
714835d5 | 1106 | if (SYMBOL_OBJ_SECTION (sym)) |
c906108c SS |
1107 | return sym; |
1108 | ||
907fc202 UW |
1109 | /* We either have an OBJFILE, or we can get at it from the sym's |
1110 | symtab. Anything else is a bug. */ | |
1111 | gdb_assert (objfile || SYMBOL_SYMTAB (sym)); | |
1112 | ||
1113 | if (objfile == NULL) | |
1114 | objfile = SYMBOL_SYMTAB (sym)->objfile; | |
1115 | ||
1116 | /* We should have an objfile by now. */ | |
1117 | gdb_assert (objfile); | |
1118 | ||
1119 | switch (SYMBOL_CLASS (sym)) | |
1120 | { | |
1121 | case LOC_STATIC: | |
1122 | case LOC_LABEL: | |
907fc202 UW |
1123 | addr = SYMBOL_VALUE_ADDRESS (sym); |
1124 | break; | |
1125 | case LOC_BLOCK: | |
1126 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1127 | break; | |
1128 | ||
1129 | default: | |
1130 | /* Nothing else will be listed in the minsyms -- no use looking | |
1131 | it up. */ | |
1132 | return sym; | |
1133 | } | |
1134 | ||
1135 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
1136 | |
1137 | return sym; | |
1138 | } | |
1139 | ||
7a78d0ee | 1140 | struct partial_symbol * |
fba45db2 | 1141 | fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) |
c906108c | 1142 | { |
907fc202 UW |
1143 | CORE_ADDR addr; |
1144 | ||
c906108c SS |
1145 | if (!psym) |
1146 | return NULL; | |
1147 | ||
714835d5 | 1148 | if (SYMBOL_OBJ_SECTION (psym)) |
c906108c SS |
1149 | return psym; |
1150 | ||
907fc202 UW |
1151 | gdb_assert (objfile); |
1152 | ||
1153 | switch (SYMBOL_CLASS (psym)) | |
1154 | { | |
1155 | case LOC_STATIC: | |
1156 | case LOC_LABEL: | |
907fc202 UW |
1157 | case LOC_BLOCK: |
1158 | addr = SYMBOL_VALUE_ADDRESS (psym); | |
1159 | break; | |
1160 | default: | |
1161 | /* Nothing else will be listed in the minsyms -- no use looking | |
1162 | it up. */ | |
1163 | return psym; | |
1164 | } | |
1165 | ||
1166 | fixup_section (&psym->ginfo, addr, objfile); | |
c906108c SS |
1167 | |
1168 | return psym; | |
1169 | } | |
1170 | ||
1171 | /* Find the definition for a specified symbol name NAME | |
176620f1 | 1172 | in domain DOMAIN, visible from lexical block BLOCK. |
c906108c | 1173 | Returns the struct symbol pointer, or zero if no symbol is found. |
c906108c SS |
1174 | C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if |
1175 | NAME is a field of the current implied argument `this'. If so set | |
9af17804 | 1176 | *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. |
c906108c SS |
1177 | BLOCK_FOUND is set to the block in which NAME is found (in the case of |
1178 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ | |
1179 | ||
1180 | /* This function has a bunch of loops in it and it would seem to be | |
1181 | attractive to put in some QUIT's (though I'm not really sure | |
1182 | whether it can run long enough to be really important). But there | |
1183 | are a few calls for which it would appear to be bad news to quit | |
7ca9f392 AC |
1184 | out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note |
1185 | that there is C++ code below which can error(), but that probably | |
1186 | doesn't affect these calls since they are looking for a known | |
1187 | variable and thus can probably assume it will never hit the C++ | |
1188 | code). */ | |
c906108c SS |
1189 | |
1190 | struct symbol * | |
53c5240f PA |
1191 | lookup_symbol_in_language (const char *name, const struct block *block, |
1192 | const domain_enum domain, enum language lang, | |
2570f2b7 | 1193 | int *is_a_field_of_this) |
c906108c | 1194 | { |
729051e6 DJ |
1195 | char *demangled_name = NULL; |
1196 | const char *modified_name = NULL; | |
3121eff0 | 1197 | const char *mangled_name = NULL; |
fba7f19c | 1198 | struct symbol *returnval; |
9ee6bb93 | 1199 | struct cleanup *cleanup = make_cleanup (null_cleanup, 0); |
c906108c | 1200 | |
729051e6 DJ |
1201 | modified_name = name; |
1202 | ||
987504bb | 1203 | /* If we are using C++ or Java, demangle the name before doing a lookup, so |
729051e6 | 1204 | we can always binary search. */ |
53c5240f | 1205 | if (lang == language_cplus) |
729051e6 DJ |
1206 | { |
1207 | demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS); | |
1208 | if (demangled_name) | |
1209 | { | |
1210 | mangled_name = name; | |
1211 | modified_name = demangled_name; | |
9ee6bb93 | 1212 | make_cleanup (xfree, demangled_name); |
729051e6 | 1213 | } |
71c25dea TT |
1214 | else |
1215 | { | |
1216 | /* If we were given a non-mangled name, canonicalize it | |
1217 | according to the language (so far only for C++). */ | |
1218 | demangled_name = cp_canonicalize_string (name); | |
1219 | if (demangled_name) | |
1220 | { | |
1221 | modified_name = demangled_name; | |
1222 | make_cleanup (xfree, demangled_name); | |
1223 | } | |
1224 | } | |
729051e6 | 1225 | } |
53c5240f | 1226 | else if (lang == language_java) |
987504bb | 1227 | { |
9af17804 | 1228 | demangled_name = cplus_demangle (name, |
987504bb JJ |
1229 | DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA); |
1230 | if (demangled_name) | |
1231 | { | |
1232 | mangled_name = name; | |
1233 | modified_name = demangled_name; | |
9ee6bb93 | 1234 | make_cleanup (xfree, demangled_name); |
987504bb JJ |
1235 | } |
1236 | } | |
729051e6 | 1237 | |
63872f9d JG |
1238 | if (case_sensitivity == case_sensitive_off) |
1239 | { | |
1240 | char *copy; | |
1241 | int len, i; | |
1242 | ||
1243 | len = strlen (name); | |
1244 | copy = (char *) alloca (len + 1); | |
1245 | for (i= 0; i < len; i++) | |
1246 | copy[i] = tolower (name[i]); | |
1247 | copy[len] = 0; | |
fba7f19c | 1248 | modified_name = copy; |
63872f9d | 1249 | } |
fba7f19c | 1250 | |
3121eff0 | 1251 | returnval = lookup_symbol_aux (modified_name, mangled_name, block, |
21b556f4 | 1252 | domain, lang, is_a_field_of_this); |
9ee6bb93 | 1253 | do_cleanups (cleanup); |
fba7f19c | 1254 | |
9af17804 | 1255 | return returnval; |
fba7f19c EZ |
1256 | } |
1257 | ||
53c5240f PA |
1258 | /* Behave like lookup_symbol_in_language, but performed with the |
1259 | current language. */ | |
1260 | ||
1261 | struct symbol * | |
1262 | lookup_symbol (const char *name, const struct block *block, | |
2570f2b7 | 1263 | domain_enum domain, int *is_a_field_of_this) |
53c5240f PA |
1264 | { |
1265 | return lookup_symbol_in_language (name, block, domain, | |
1266 | current_language->la_language, | |
2570f2b7 | 1267 | is_a_field_of_this); |
53c5240f PA |
1268 | } |
1269 | ||
1270 | /* Behave like lookup_symbol except that NAME is the natural name | |
5ad1c190 DC |
1271 | of the symbol that we're looking for and, if LINKAGE_NAME is |
1272 | non-NULL, ensure that the symbol's linkage name matches as | |
1273 | well. */ | |
1274 | ||
fba7f19c | 1275 | static struct symbol * |
5ad1c190 | 1276 | lookup_symbol_aux (const char *name, const char *linkage_name, |
176620f1 | 1277 | const struct block *block, const domain_enum domain, |
21b556f4 | 1278 | enum language language, int *is_a_field_of_this) |
fba7f19c | 1279 | { |
8155455b | 1280 | struct symbol *sym; |
53c5240f | 1281 | const struct language_defn *langdef; |
406bc4de | 1282 | |
9a146a11 EZ |
1283 | /* Make sure we do something sensible with is_a_field_of_this, since |
1284 | the callers that set this parameter to some non-null value will | |
1285 | certainly use it later and expect it to be either 0 or 1. | |
1286 | If we don't set it, the contents of is_a_field_of_this are | |
1287 | undefined. */ | |
1288 | if (is_a_field_of_this != NULL) | |
1289 | *is_a_field_of_this = 0; | |
1290 | ||
e4051eeb DC |
1291 | /* Search specified block and its superiors. Don't search |
1292 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1293 | |
21b556f4 | 1294 | sym = lookup_symbol_aux_local (name, linkage_name, block, domain); |
8155455b DC |
1295 | if (sym != NULL) |
1296 | return sym; | |
c906108c | 1297 | |
53c5240f PA |
1298 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
1299 | check to see if NAME is a field of `this'. */ | |
1300 | ||
1301 | langdef = language_def (language); | |
5f9a71c3 | 1302 | |
2b2d9e11 VP |
1303 | if (langdef->la_name_of_this != NULL && is_a_field_of_this != NULL |
1304 | && block != NULL) | |
c906108c | 1305 | { |
2b2d9e11 VP |
1306 | struct symbol *sym = NULL; |
1307 | /* 'this' is only defined in the function's block, so find the | |
1308 | enclosing function block. */ | |
9af17804 | 1309 | for (; block && !BLOCK_FUNCTION (block); |
2b2d9e11 VP |
1310 | block = BLOCK_SUPERBLOCK (block)); |
1311 | ||
1312 | if (block && !dict_empty (BLOCK_DICT (block))) | |
1313 | sym = lookup_block_symbol (block, langdef->la_name_of_this, | |
1314 | NULL, VAR_DOMAIN); | |
1315 | if (sym) | |
c906108c | 1316 | { |
2b2d9e11 | 1317 | struct type *t = sym->type; |
9af17804 | 1318 | |
2b2d9e11 VP |
1319 | /* I'm not really sure that type of this can ever |
1320 | be typedefed; just be safe. */ | |
1321 | CHECK_TYPEDEF (t); | |
1322 | if (TYPE_CODE (t) == TYPE_CODE_PTR | |
1323 | || TYPE_CODE (t) == TYPE_CODE_REF) | |
1324 | t = TYPE_TARGET_TYPE (t); | |
9af17804 | 1325 | |
2b2d9e11 VP |
1326 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
1327 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 1328 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 1329 | langdef->la_name_of_this); |
9af17804 | 1330 | |
2b2d9e11 VP |
1331 | if (check_field (t, name)) |
1332 | { | |
1333 | *is_a_field_of_this = 1; | |
2b2d9e11 VP |
1334 | return NULL; |
1335 | } | |
c906108c SS |
1336 | } |
1337 | } | |
1338 | ||
53c5240f | 1339 | /* Now do whatever is appropriate for LANGUAGE to look |
5f9a71c3 | 1340 | up static and global variables. */ |
c906108c | 1341 | |
21b556f4 | 1342 | sym = langdef->la_lookup_symbol_nonlocal (name, linkage_name, block, domain); |
8155455b DC |
1343 | if (sym != NULL) |
1344 | return sym; | |
c906108c | 1345 | |
8155455b DC |
1346 | /* Now search all static file-level symbols. Not strictly correct, |
1347 | but more useful than an error. Do the symtabs first, then check | |
1348 | the psymtabs. If a psymtab indicates the existence of the | |
1349 | desired name as a file-level static, then do psymtab-to-symtab | |
c906108c SS |
1350 | conversion on the fly and return the found symbol. */ |
1351 | ||
21b556f4 | 1352 | sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, linkage_name, domain); |
8155455b DC |
1353 | if (sym != NULL) |
1354 | return sym; | |
9af17804 | 1355 | |
21b556f4 | 1356 | sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, linkage_name, domain); |
8155455b DC |
1357 | if (sym != NULL) |
1358 | return sym; | |
c906108c | 1359 | |
8155455b | 1360 | return NULL; |
c906108c | 1361 | } |
8155455b | 1362 | |
e4051eeb | 1363 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 1364 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b DC |
1365 | |
1366 | static struct symbol * | |
5ad1c190 | 1367 | lookup_symbol_aux_local (const char *name, const char *linkage_name, |
8155455b | 1368 | const struct block *block, |
21b556f4 | 1369 | const domain_enum domain) |
8155455b DC |
1370 | { |
1371 | struct symbol *sym; | |
89a9d1b1 DC |
1372 | const struct block *static_block = block_static_block (block); |
1373 | ||
e4051eeb DC |
1374 | /* Check if either no block is specified or it's a global block. */ |
1375 | ||
89a9d1b1 DC |
1376 | if (static_block == NULL) |
1377 | return NULL; | |
e4051eeb | 1378 | |
89a9d1b1 | 1379 | while (block != static_block) |
f61e8913 | 1380 | { |
21b556f4 | 1381 | sym = lookup_symbol_aux_block (name, linkage_name, block, domain); |
f61e8913 DC |
1382 | if (sym != NULL) |
1383 | return sym; | |
edb3359d DJ |
1384 | |
1385 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) | |
1386 | break; | |
f61e8913 DC |
1387 | block = BLOCK_SUPERBLOCK (block); |
1388 | } | |
1389 | ||
edb3359d | 1390 | /* We've reached the edge of the function without finding a result. */ |
e4051eeb | 1391 | |
f61e8913 DC |
1392 | return NULL; |
1393 | } | |
1394 | ||
3a40aaa0 UW |
1395 | /* Look up OBJFILE to BLOCK. */ |
1396 | ||
1397 | static struct objfile * | |
1398 | lookup_objfile_from_block (const struct block *block) | |
1399 | { | |
1400 | struct objfile *obj; | |
1401 | struct symtab *s; | |
1402 | ||
1403 | if (block == NULL) | |
1404 | return NULL; | |
1405 | ||
1406 | block = block_global_block (block); | |
1407 | /* Go through SYMTABS. */ | |
1408 | ALL_SYMTABS (obj, s) | |
1409 | if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK)) | |
1410 | return obj; | |
1411 | ||
1412 | return NULL; | |
1413 | } | |
1414 | ||
6c9353d3 PA |
1415 | /* Look up a symbol in a block; if found, fixup the symbol, and set |
1416 | block_found appropriately. */ | |
f61e8913 | 1417 | |
5f9a71c3 | 1418 | struct symbol * |
5ad1c190 | 1419 | lookup_symbol_aux_block (const char *name, const char *linkage_name, |
f61e8913 | 1420 | const struct block *block, |
21b556f4 | 1421 | const domain_enum domain) |
f61e8913 DC |
1422 | { |
1423 | struct symbol *sym; | |
f61e8913 | 1424 | |
5ad1c190 | 1425 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
f61e8913 | 1426 | if (sym) |
8155455b | 1427 | { |
f61e8913 | 1428 | block_found = block; |
21b556f4 | 1429 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
1430 | } |
1431 | ||
1432 | return NULL; | |
1433 | } | |
1434 | ||
3a40aaa0 UW |
1435 | /* Check all global symbols in OBJFILE in symtabs and |
1436 | psymtabs. */ | |
1437 | ||
1438 | struct symbol * | |
1439 | lookup_global_symbol_from_objfile (const struct objfile *objfile, | |
1440 | const char *name, | |
1441 | const char *linkage_name, | |
21b556f4 | 1442 | const domain_enum domain) |
3a40aaa0 UW |
1443 | { |
1444 | struct symbol *sym; | |
1445 | struct blockvector *bv; | |
1446 | const struct block *block; | |
1447 | struct symtab *s; | |
1448 | struct partial_symtab *ps; | |
1449 | ||
1450 | /* Go through symtabs. */ | |
1451 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1452 | { | |
1453 | bv = BLOCKVECTOR (s); | |
1454 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1455 | sym = lookup_block_symbol (block, name, linkage_name, domain); | |
1456 | if (sym) | |
1457 | { | |
1458 | block_found = block; | |
3a40aaa0 UW |
1459 | return fixup_symbol_section (sym, (struct objfile *)objfile); |
1460 | } | |
1461 | } | |
1462 | ||
1463 | /* Now go through psymtabs. */ | |
1464 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
1465 | { | |
1466 | if (!ps->readin | |
1467 | && lookup_partial_symbol (ps, name, linkage_name, | |
1468 | 1, domain)) | |
1469 | { | |
1470 | s = PSYMTAB_TO_SYMTAB (ps); | |
1471 | bv = BLOCKVECTOR (s); | |
1472 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1473 | sym = lookup_block_symbol (block, name, linkage_name, domain); | |
3a40aaa0 UW |
1474 | return fixup_symbol_section (sym, (struct objfile *)objfile); |
1475 | } | |
1476 | } | |
1477 | ||
56e3f43c DJ |
1478 | if (objfile->separate_debug_objfile) |
1479 | return lookup_global_symbol_from_objfile (objfile->separate_debug_objfile, | |
21b556f4 | 1480 | name, linkage_name, domain); |
56e3f43c | 1481 | |
3a40aaa0 UW |
1482 | return NULL; |
1483 | } | |
1484 | ||
8155455b DC |
1485 | /* Check to see if the symbol is defined in one of the symtabs. |
1486 | BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
1487 | depending on whether or not we want to search global symbols or | |
1488 | static symbols. */ | |
1489 | ||
1490 | static struct symbol * | |
1491 | lookup_symbol_aux_symtabs (int block_index, | |
5ad1c190 | 1492 | const char *name, const char *linkage_name, |
21b556f4 | 1493 | const domain_enum domain) |
8155455b DC |
1494 | { |
1495 | struct symbol *sym; | |
1496 | struct objfile *objfile; | |
1497 | struct blockvector *bv; | |
1498 | const struct block *block; | |
1499 | struct symtab *s; | |
1500 | ||
11309657 | 1501 | ALL_PRIMARY_SYMTABS (objfile, s) |
8155455b DC |
1502 | { |
1503 | bv = BLOCKVECTOR (s); | |
1504 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
5ad1c190 | 1505 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
8155455b DC |
1506 | if (sym) |
1507 | { | |
1508 | block_found = block; | |
8155455b DC |
1509 | return fixup_symbol_section (sym, objfile); |
1510 | } | |
1511 | } | |
1512 | ||
1513 | return NULL; | |
1514 | } | |
1515 | ||
1516 | /* Check to see if the symbol is defined in one of the partial | |
1517 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or | |
1518 | STATIC_BLOCK, depending on whether or not we want to search global | |
1519 | symbols or static symbols. */ | |
1520 | ||
1521 | static struct symbol * | |
1522 | lookup_symbol_aux_psymtabs (int block_index, const char *name, | |
5ad1c190 | 1523 | const char *linkage_name, |
21b556f4 | 1524 | const domain_enum domain) |
8155455b DC |
1525 | { |
1526 | struct symbol *sym; | |
1527 | struct objfile *objfile; | |
1528 | struct blockvector *bv; | |
1529 | const struct block *block; | |
1530 | struct partial_symtab *ps; | |
1531 | struct symtab *s; | |
1532 | const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0); | |
1533 | ||
1534 | ALL_PSYMTABS (objfile, ps) | |
1535 | { | |
1536 | if (!ps->readin | |
5ad1c190 | 1537 | && lookup_partial_symbol (ps, name, linkage_name, |
176620f1 | 1538 | psymtab_index, domain)) |
8155455b DC |
1539 | { |
1540 | s = PSYMTAB_TO_SYMTAB (ps); | |
1541 | bv = BLOCKVECTOR (s); | |
1542 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
5ad1c190 | 1543 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
8155455b DC |
1544 | if (!sym) |
1545 | { | |
1546 | /* This shouldn't be necessary, but as a last resort try | |
1547 | looking in the statics even though the psymtab claimed | |
1548 | the symbol was global, or vice-versa. It's possible | |
1549 | that the psymtab gets it wrong in some cases. */ | |
1550 | ||
1551 | /* FIXME: carlton/2002-09-30: Should we really do that? | |
1552 | If that happens, isn't it likely to be a GDB error, in | |
1553 | which case we should fix the GDB error rather than | |
1554 | silently dealing with it here? So I'd vote for | |
1555 | removing the check for the symbol in the other | |
1556 | block. */ | |
1557 | block = BLOCKVECTOR_BLOCK (bv, | |
1558 | block_index == GLOBAL_BLOCK ? | |
1559 | STATIC_BLOCK : GLOBAL_BLOCK); | |
5ad1c190 | 1560 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
8155455b | 1561 | if (!sym) |
8a3fe4f8 | 1562 | error (_("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>)."), |
8155455b DC |
1563 | block_index == GLOBAL_BLOCK ? "global" : "static", |
1564 | name, ps->filename, name, name); | |
1565 | } | |
8155455b DC |
1566 | return fixup_symbol_section (sym, objfile); |
1567 | } | |
1568 | } | |
1569 | ||
1570 | return NULL; | |
1571 | } | |
1572 | ||
5f9a71c3 DC |
1573 | /* A default version of lookup_symbol_nonlocal for use by languages |
1574 | that can't think of anything better to do. This implements the C | |
1575 | lookup rules. */ | |
1576 | ||
1577 | struct symbol * | |
1578 | basic_lookup_symbol_nonlocal (const char *name, | |
1579 | const char *linkage_name, | |
1580 | const struct block *block, | |
21b556f4 | 1581 | const domain_enum domain) |
5f9a71c3 DC |
1582 | { |
1583 | struct symbol *sym; | |
1584 | ||
1585 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
1586 | this (or what turned into this) was part of lookup_symbol_aux; | |
1587 | I'm much less worried about these questions now, since these | |
1588 | decisions have turned out well, but I leave these comments here | |
1589 | for posterity. */ | |
1590 | ||
1591 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
1592 | not it would be appropriate to search the current global block | |
1593 | here as well. (That's what this code used to do before the | |
1594 | is_a_field_of_this check was moved up.) On the one hand, it's | |
1595 | redundant with the lookup_symbol_aux_symtabs search that happens | |
1596 | next. On the other hand, if decode_line_1 is passed an argument | |
1597 | like filename:var, then the user presumably wants 'var' to be | |
1598 | searched for in filename. On the third hand, there shouldn't be | |
1599 | multiple global variables all of which are named 'var', and it's | |
1600 | not like decode_line_1 has ever restricted its search to only | |
1601 | global variables in a single filename. All in all, only | |
1602 | searching the static block here seems best: it's correct and it's | |
1603 | cleanest. */ | |
1604 | ||
1605 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
1606 | issue here: if you usually search for global symbols in the | |
1607 | current file, then it would be slightly better to search the | |
1608 | current global block before searching all the symtabs. But there | |
1609 | are other factors that have a much greater effect on performance | |
1610 | than that one, so I don't think we should worry about that for | |
1611 | now. */ | |
1612 | ||
21b556f4 | 1613 | sym = lookup_symbol_static (name, linkage_name, block, domain); |
5f9a71c3 DC |
1614 | if (sym != NULL) |
1615 | return sym; | |
1616 | ||
21b556f4 | 1617 | return lookup_symbol_global (name, linkage_name, block, domain); |
5f9a71c3 DC |
1618 | } |
1619 | ||
1620 | /* Lookup a symbol in the static block associated to BLOCK, if there | |
1621 | is one; do nothing if BLOCK is NULL or a global block. */ | |
1622 | ||
1623 | struct symbol * | |
1624 | lookup_symbol_static (const char *name, | |
1625 | const char *linkage_name, | |
1626 | const struct block *block, | |
21b556f4 | 1627 | const domain_enum domain) |
5f9a71c3 DC |
1628 | { |
1629 | const struct block *static_block = block_static_block (block); | |
1630 | ||
1631 | if (static_block != NULL) | |
21b556f4 | 1632 | return lookup_symbol_aux_block (name, linkage_name, static_block, domain); |
5f9a71c3 DC |
1633 | else |
1634 | return NULL; | |
1635 | } | |
1636 | ||
1637 | /* Lookup a symbol in all files' global blocks (searching psymtabs if | |
1638 | necessary). */ | |
1639 | ||
1640 | struct symbol * | |
1641 | lookup_symbol_global (const char *name, | |
1642 | const char *linkage_name, | |
3a40aaa0 | 1643 | const struct block *block, |
21b556f4 | 1644 | const domain_enum domain) |
5f9a71c3 | 1645 | { |
3a40aaa0 UW |
1646 | struct symbol *sym = NULL; |
1647 | struct objfile *objfile = NULL; | |
1648 | ||
1649 | /* Call library-specific lookup procedure. */ | |
1650 | objfile = lookup_objfile_from_block (block); | |
1651 | if (objfile != NULL) | |
21b556f4 | 1652 | sym = solib_global_lookup (objfile, name, linkage_name, domain); |
3a40aaa0 UW |
1653 | if (sym != NULL) |
1654 | return sym; | |
5f9a71c3 | 1655 | |
21b556f4 | 1656 | sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name, domain); |
5f9a71c3 DC |
1657 | if (sym != NULL) |
1658 | return sym; | |
1659 | ||
21b556f4 | 1660 | return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name, domain); |
5f9a71c3 DC |
1661 | } |
1662 | ||
5eeb2539 | 1663 | int |
9af17804 | 1664 | symbol_matches_domain (enum language symbol_language, |
5eeb2539 AR |
1665 | domain_enum symbol_domain, |
1666 | domain_enum domain) | |
1667 | { | |
9af17804 | 1668 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". |
5eeb2539 AR |
1669 | A Java class declaration also defines a typedef for the class. |
1670 | Similarly, any Ada type declaration implicitly defines a typedef. */ | |
1671 | if (symbol_language == language_cplus | |
1672 | || symbol_language == language_java | |
1673 | || symbol_language == language_ada) | |
1674 | { | |
1675 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
1676 | && symbol_domain == STRUCT_DOMAIN) | |
1677 | return 1; | |
1678 | } | |
1679 | /* For all other languages, strict match is required. */ | |
1680 | return (symbol_domain == domain); | |
1681 | } | |
1682 | ||
3d4e8fd2 DC |
1683 | /* Look, in partial_symtab PST, for symbol whose natural name is NAME. |
1684 | If LINKAGE_NAME is non-NULL, check in addition that the symbol's | |
1685 | linkage name matches it. Check the global symbols if GLOBAL, the | |
1686 | static symbols if not */ | |
c906108c | 1687 | |
b6429628 | 1688 | struct partial_symbol * |
3d4e8fd2 DC |
1689 | lookup_partial_symbol (struct partial_symtab *pst, const char *name, |
1690 | const char *linkage_name, int global, | |
176620f1 | 1691 | domain_enum domain) |
c906108c | 1692 | { |
357e46e7 | 1693 | struct partial_symbol *temp; |
c906108c | 1694 | struct partial_symbol **start, **psym; |
38d49aff | 1695 | struct partial_symbol **top, **real_top, **bottom, **center; |
c906108c SS |
1696 | int length = (global ? pst->n_global_syms : pst->n_static_syms); |
1697 | int do_linear_search = 1; | |
9af17804 | 1698 | |
c906108c SS |
1699 | if (length == 0) |
1700 | { | |
1701 | return (NULL); | |
1702 | } | |
c906108c SS |
1703 | start = (global ? |
1704 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
c5aa993b | 1705 | pst->objfile->static_psymbols.list + pst->statics_offset); |
9af17804 | 1706 | |
c5aa993b | 1707 | if (global) /* This means we can use a binary search. */ |
c906108c SS |
1708 | { |
1709 | do_linear_search = 0; | |
1710 | ||
1711 | /* Binary search. This search is guaranteed to end with center | |
0fe19209 DC |
1712 | pointing at the earliest partial symbol whose name might be |
1713 | correct. At that point *all* partial symbols with an | |
1714 | appropriate name will be checked against the correct | |
176620f1 | 1715 | domain. */ |
c906108c SS |
1716 | |
1717 | bottom = start; | |
1718 | top = start + length - 1; | |
38d49aff | 1719 | real_top = top; |
c906108c SS |
1720 | while (top > bottom) |
1721 | { | |
1722 | center = bottom + (top - bottom) / 2; | |
1723 | if (!(center < top)) | |
e2e0b3e5 | 1724 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 1725 | if (!do_linear_search |
357e46e7 | 1726 | && (SYMBOL_LANGUAGE (*center) == language_java)) |
c906108c SS |
1727 | { |
1728 | do_linear_search = 1; | |
1729 | } | |
4725b721 | 1730 | if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0) |
c906108c SS |
1731 | { |
1732 | top = center; | |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | bottom = center + 1; | |
1737 | } | |
1738 | } | |
1739 | if (!(top == bottom)) | |
e2e0b3e5 | 1740 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
357e46e7 | 1741 | |
3d4e8fd2 DC |
1742 | while (top <= real_top |
1743 | && (linkage_name != NULL | |
1744 | ? strcmp (SYMBOL_LINKAGE_NAME (*top), linkage_name) == 0 | |
4725b721 | 1745 | : SYMBOL_MATCHES_SEARCH_NAME (*top,name))) |
c906108c | 1746 | { |
5eeb2539 AR |
1747 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*top), |
1748 | SYMBOL_DOMAIN (*top), domain)) | |
1749 | return (*top); | |
c5aa993b | 1750 | top++; |
c906108c SS |
1751 | } |
1752 | } | |
1753 | ||
1754 | /* Can't use a binary search or else we found during the binary search that | |
1755 | we should also do a linear search. */ | |
1756 | ||
1757 | if (do_linear_search) | |
9af17804 | 1758 | { |
c906108c SS |
1759 | for (psym = start; psym < start + length; psym++) |
1760 | { | |
9af17804 | 1761 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym), |
5eeb2539 | 1762 | SYMBOL_DOMAIN (*psym), domain)) |
c906108c | 1763 | { |
3d4e8fd2 DC |
1764 | if (linkage_name != NULL |
1765 | ? strcmp (SYMBOL_LINKAGE_NAME (*psym), linkage_name) == 0 | |
4725b721 | 1766 | : SYMBOL_MATCHES_SEARCH_NAME (*psym, name)) |
c906108c SS |
1767 | { |
1768 | return (*psym); | |
1769 | } | |
1770 | } | |
1771 | } | |
1772 | } | |
1773 | ||
1774 | return (NULL); | |
1775 | } | |
1776 | ||
176620f1 | 1777 | /* Look up a type named NAME in the struct_domain. The type returned |
b368761e DC |
1778 | must not be opaque -- i.e., must have at least one field |
1779 | defined. */ | |
c906108c | 1780 | |
b368761e DC |
1781 | struct type * |
1782 | lookup_transparent_type (const char *name) | |
1783 | { | |
1784 | return current_language->la_lookup_transparent_type (name); | |
1785 | } | |
c906108c | 1786 | |
b368761e DC |
1787 | /* The standard implementation of lookup_transparent_type. This code |
1788 | was modeled on lookup_symbol -- the parts not relevant to looking | |
1789 | up types were just left out. In particular it's assumed here that | |
1790 | types are available in struct_domain and only at file-static or | |
1791 | global blocks. */ | |
c906108c SS |
1792 | |
1793 | struct type * | |
b368761e | 1794 | basic_lookup_transparent_type (const char *name) |
c906108c | 1795 | { |
52f0bd74 AC |
1796 | struct symbol *sym; |
1797 | struct symtab *s = NULL; | |
1798 | struct partial_symtab *ps; | |
c906108c | 1799 | struct blockvector *bv; |
52f0bd74 AC |
1800 | struct objfile *objfile; |
1801 | struct block *block; | |
c906108c SS |
1802 | |
1803 | /* Now search all the global symbols. Do the symtab's first, then | |
1804 | check the psymtab's. If a psymtab indicates the existence | |
1805 | of the desired name as a global, then do psymtab-to-symtab | |
1806 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 1807 | |
11309657 | 1808 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1809 | { |
1810 | bv = BLOCKVECTOR (s); | |
1811 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
176620f1 | 1812 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1813 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1814 | { | |
1815 | return SYMBOL_TYPE (sym); | |
1816 | } | |
1817 | } | |
c906108c SS |
1818 | |
1819 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b | 1820 | { |
3d4e8fd2 | 1821 | if (!ps->readin && lookup_partial_symbol (ps, name, NULL, |
176620f1 | 1822 | 1, STRUCT_DOMAIN)) |
c5aa993b JM |
1823 | { |
1824 | s = PSYMTAB_TO_SYMTAB (ps); | |
1825 | bv = BLOCKVECTOR (s); | |
1826 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
176620f1 | 1827 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1828 | if (!sym) |
1829 | { | |
1830 | /* This shouldn't be necessary, but as a last resort | |
1831 | * try looking in the statics even though the psymtab | |
1832 | * claimed the symbol was global. It's possible that | |
1833 | * the psymtab gets it wrong in some cases. | |
1834 | */ | |
1835 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1836 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b | 1837 | if (!sym) |
8a3fe4f8 | 1838 | error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ |
c906108c | 1839 | %s may be an inlined function, or may be a template function\n\ |
8a3fe4f8 | 1840 | (if a template, try specifying an instantiation: %s<type>)."), |
c5aa993b JM |
1841 | name, ps->filename, name, name); |
1842 | } | |
1843 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1844 | return SYMBOL_TYPE (sym); | |
1845 | } | |
1846 | } | |
c906108c SS |
1847 | |
1848 | /* Now search the static file-level symbols. | |
1849 | Not strictly correct, but more useful than an error. | |
1850 | Do the symtab's first, then | |
1851 | check the psymtab's. If a psymtab indicates the existence | |
1852 | of the desired name as a file-level static, then do psymtab-to-symtab | |
1853 | conversion on the fly and return the found symbol. | |
1854 | */ | |
1855 | ||
11309657 | 1856 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1857 | { |
1858 | bv = BLOCKVECTOR (s); | |
1859 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1860 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1861 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1862 | { | |
1863 | return SYMBOL_TYPE (sym); | |
1864 | } | |
1865 | } | |
c906108c SS |
1866 | |
1867 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b | 1868 | { |
176620f1 | 1869 | if (!ps->readin && lookup_partial_symbol (ps, name, NULL, 0, STRUCT_DOMAIN)) |
c5aa993b JM |
1870 | { |
1871 | s = PSYMTAB_TO_SYMTAB (ps); | |
1872 | bv = BLOCKVECTOR (s); | |
1873 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1874 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1875 | if (!sym) |
1876 | { | |
1877 | /* This shouldn't be necessary, but as a last resort | |
1878 | * try looking in the globals even though the psymtab | |
1879 | * claimed the symbol was static. It's possible that | |
1880 | * the psymtab gets it wrong in some cases. | |
1881 | */ | |
1882 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
176620f1 | 1883 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b | 1884 | if (!sym) |
8a3fe4f8 | 1885 | error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ |
c906108c | 1886 | %s may be an inlined function, or may be a template function\n\ |
8a3fe4f8 | 1887 | (if a template, try specifying an instantiation: %s<type>)."), |
c5aa993b JM |
1888 | name, ps->filename, name, name); |
1889 | } | |
1890 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1891 | return SYMBOL_TYPE (sym); | |
1892 | } | |
1893 | } | |
c906108c SS |
1894 | return (struct type *) 0; |
1895 | } | |
1896 | ||
1897 | ||
1898 | /* Find the psymtab containing main(). */ | |
1899 | /* FIXME: What about languages without main() or specially linked | |
1900 | executables that have no main() ? */ | |
1901 | ||
1902 | struct partial_symtab * | |
fba45db2 | 1903 | find_main_psymtab (void) |
c906108c | 1904 | { |
52f0bd74 AC |
1905 | struct partial_symtab *pst; |
1906 | struct objfile *objfile; | |
c906108c SS |
1907 | |
1908 | ALL_PSYMTABS (objfile, pst) | |
c5aa993b | 1909 | { |
176620f1 | 1910 | if (lookup_partial_symbol (pst, main_name (), NULL, 1, VAR_DOMAIN)) |
c5aa993b JM |
1911 | { |
1912 | return (pst); | |
1913 | } | |
1914 | } | |
c906108c SS |
1915 | return (NULL); |
1916 | } | |
1917 | ||
176620f1 | 1918 | /* Search BLOCK for symbol NAME in DOMAIN. |
c906108c SS |
1919 | |
1920 | Note that if NAME is the demangled form of a C++ symbol, we will fail | |
1921 | to find a match during the binary search of the non-encoded names, but | |
1922 | for now we don't worry about the slight inefficiency of looking for | |
1923 | a match we'll never find, since it will go pretty quick. Once the | |
1924 | binary search terminates, we drop through and do a straight linear | |
1bae87b9 | 1925 | search on the symbols. Each symbol which is marked as being a ObjC/C++ |
9af17804 | 1926 | symbol (language_cplus or language_objc set) has both the encoded and |
1bae87b9 | 1927 | non-encoded names tested for a match. |
3121eff0 | 1928 | |
5ad1c190 | 1929 | If LINKAGE_NAME is non-NULL, verify that any symbol we find has this |
3121eff0 DJ |
1930 | particular mangled name. |
1931 | */ | |
c906108c SS |
1932 | |
1933 | struct symbol * | |
aa1ee363 | 1934 | lookup_block_symbol (const struct block *block, const char *name, |
5ad1c190 | 1935 | const char *linkage_name, |
176620f1 | 1936 | const domain_enum domain) |
c906108c | 1937 | { |
de4f826b DC |
1938 | struct dict_iterator iter; |
1939 | struct symbol *sym; | |
c906108c | 1940 | |
de4f826b | 1941 | if (!BLOCK_FUNCTION (block)) |
261397f8 | 1942 | { |
de4f826b DC |
1943 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); |
1944 | sym != NULL; | |
1945 | sym = dict_iter_name_next (name, &iter)) | |
261397f8 | 1946 | { |
5eeb2539 AR |
1947 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1948 | SYMBOL_DOMAIN (sym), domain) | |
de4f826b DC |
1949 | && (linkage_name != NULL |
1950 | ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1)) | |
261397f8 DJ |
1951 | return sym; |
1952 | } | |
1953 | return NULL; | |
1954 | } | |
526e70c0 | 1955 | else |
c906108c | 1956 | { |
526e70c0 DC |
1957 | /* Note that parameter symbols do not always show up last in the |
1958 | list; this loop makes sure to take anything else other than | |
1959 | parameter symbols first; it only uses parameter symbols as a | |
1960 | last resort. Note that this only takes up extra computation | |
1961 | time on a match. */ | |
de4f826b DC |
1962 | |
1963 | struct symbol *sym_found = NULL; | |
1964 | ||
1965 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); | |
1966 | sym != NULL; | |
1967 | sym = dict_iter_name_next (name, &iter)) | |
c906108c | 1968 | { |
5eeb2539 AR |
1969 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1970 | SYMBOL_DOMAIN (sym), domain) | |
de4f826b DC |
1971 | && (linkage_name != NULL |
1972 | ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1)) | |
c906108c | 1973 | { |
c906108c | 1974 | sym_found = sym; |
2a2d4dc3 | 1975 | if (!SYMBOL_IS_ARGUMENT (sym)) |
c906108c SS |
1976 | { |
1977 | break; | |
1978 | } | |
1979 | } | |
c906108c | 1980 | } |
de4f826b | 1981 | return (sym_found); /* Will be NULL if not found. */ |
c906108c | 1982 | } |
c906108c SS |
1983 | } |
1984 | ||
c906108c SS |
1985 | /* Find the symtab associated with PC and SECTION. Look through the |
1986 | psymtabs and read in another symtab if necessary. */ | |
1987 | ||
1988 | struct symtab * | |
714835d5 | 1989 | find_pc_sect_symtab (CORE_ADDR pc, struct obj_section *section) |
c906108c | 1990 | { |
52f0bd74 | 1991 | struct block *b; |
c906108c | 1992 | struct blockvector *bv; |
52f0bd74 AC |
1993 | struct symtab *s = NULL; |
1994 | struct symtab *best_s = NULL; | |
1995 | struct partial_symtab *ps; | |
1996 | struct objfile *objfile; | |
c906108c | 1997 | CORE_ADDR distance = 0; |
8a48e967 DJ |
1998 | struct minimal_symbol *msymbol; |
1999 | ||
2000 | /* If we know that this is not a text address, return failure. This is | |
2001 | necessary because we loop based on the block's high and low code | |
2002 | addresses, which do not include the data ranges, and because | |
2003 | we call find_pc_sect_psymtab which has a similar restriction based | |
2004 | on the partial_symtab's texthigh and textlow. */ | |
2005 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
2006 | if (msymbol | |
712f90be TT |
2007 | && (MSYMBOL_TYPE (msymbol) == mst_data |
2008 | || MSYMBOL_TYPE (msymbol) == mst_bss | |
2009 | || MSYMBOL_TYPE (msymbol) == mst_abs | |
2010 | || MSYMBOL_TYPE (msymbol) == mst_file_data | |
2011 | || MSYMBOL_TYPE (msymbol) == mst_file_bss)) | |
8a48e967 | 2012 | return NULL; |
c906108c SS |
2013 | |
2014 | /* Search all symtabs for the one whose file contains our address, and which | |
2015 | is the smallest of all the ones containing the address. This is designed | |
2016 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2017 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2018 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2019 | ||
2020 | This happens for native ecoff format, where code from included files | |
2021 | gets its own symtab. The symtab for the included file should have | |
2022 | been read in already via the dependency mechanism. | |
2023 | It might be swifter to create several symtabs with the same name | |
2024 | like xcoff does (I'm not sure). | |
2025 | ||
2026 | It also happens for objfiles that have their functions reordered. | |
2027 | For these, the symtab we are looking for is not necessarily read in. */ | |
2028 | ||
11309657 | 2029 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
2030 | { |
2031 | bv = BLOCKVECTOR (s); | |
2032 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2033 | |
c5aa993b | 2034 | if (BLOCK_START (b) <= pc |
c5aa993b | 2035 | && BLOCK_END (b) > pc |
c5aa993b JM |
2036 | && (distance == 0 |
2037 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2038 | { | |
2039 | /* For an objfile that has its functions reordered, | |
2040 | find_pc_psymtab will find the proper partial symbol table | |
2041 | and we simply return its corresponding symtab. */ | |
2042 | /* In order to better support objfiles that contain both | |
2043 | stabs and coff debugging info, we continue on if a psymtab | |
2044 | can't be found. */ | |
2045 | if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs) | |
2046 | { | |
2047 | ps = find_pc_sect_psymtab (pc, section); | |
2048 | if (ps) | |
2049 | return PSYMTAB_TO_SYMTAB (ps); | |
2050 | } | |
2051 | if (section != 0) | |
2052 | { | |
de4f826b | 2053 | struct dict_iterator iter; |
261397f8 | 2054 | struct symbol *sym = NULL; |
c906108c | 2055 | |
de4f826b | 2056 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2057 | { |
261397f8 | 2058 | fixup_symbol_section (sym, objfile); |
714835d5 | 2059 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym), section)) |
c5aa993b JM |
2060 | break; |
2061 | } | |
de4f826b | 2062 | if (sym == NULL) |
c5aa993b JM |
2063 | continue; /* no symbol in this symtab matches section */ |
2064 | } | |
2065 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2066 | best_s = s; | |
2067 | } | |
2068 | } | |
c906108c SS |
2069 | |
2070 | if (best_s != NULL) | |
c5aa993b | 2071 | return (best_s); |
c906108c SS |
2072 | |
2073 | s = NULL; | |
2074 | ps = find_pc_sect_psymtab (pc, section); | |
2075 | if (ps) | |
2076 | { | |
2077 | if (ps->readin) | |
2078 | /* Might want to error() here (in case symtab is corrupt and | |
2079 | will cause a core dump), but maybe we can successfully | |
2080 | continue, so let's not. */ | |
8a3fe4f8 | 2081 | warning (_("\ |
5af949e3 UW |
2082 | (Internal error: pc %s in read in psymtab, but not in symtab.)\n"), |
2083 | paddress (get_objfile_arch (ps->objfile), pc)); | |
c906108c SS |
2084 | s = PSYMTAB_TO_SYMTAB (ps); |
2085 | } | |
2086 | return (s); | |
2087 | } | |
2088 | ||
2089 | /* Find the symtab associated with PC. Look through the psymtabs and | |
2090 | read in another symtab if necessary. Backward compatibility, no section */ | |
2091 | ||
2092 | struct symtab * | |
fba45db2 | 2093 | find_pc_symtab (CORE_ADDR pc) |
c906108c SS |
2094 | { |
2095 | return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); | |
2096 | } | |
c906108c | 2097 | \f |
c5aa993b | 2098 | |
7e73cedf | 2099 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
2100 | Return a structure containing a symtab pointer, a line number, |
2101 | and a pc range for the entire source line. | |
2102 | The value's .pc field is NOT the specified pc. | |
2103 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
2104 | use the line that ends there. Otherwise, in that case, the line | |
2105 | that begins there is used. */ | |
2106 | ||
2107 | /* The big complication here is that a line may start in one file, and end just | |
2108 | before the start of another file. This usually occurs when you #include | |
2109 | code in the middle of a subroutine. To properly find the end of a line's PC | |
2110 | range, we must search all symtabs associated with this compilation unit, and | |
2111 | find the one whose first PC is closer than that of the next line in this | |
2112 | symtab. */ | |
2113 | ||
2114 | /* If it's worth the effort, we could be using a binary search. */ | |
2115 | ||
2116 | struct symtab_and_line | |
714835d5 | 2117 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c SS |
2118 | { |
2119 | struct symtab *s; | |
52f0bd74 AC |
2120 | struct linetable *l; |
2121 | int len; | |
2122 | int i; | |
2123 | struct linetable_entry *item; | |
c906108c SS |
2124 | struct symtab_and_line val; |
2125 | struct blockvector *bv; | |
2126 | struct minimal_symbol *msymbol; | |
2127 | struct minimal_symbol *mfunsym; | |
2128 | ||
2129 | /* Info on best line seen so far, and where it starts, and its file. */ | |
2130 | ||
2131 | struct linetable_entry *best = NULL; | |
2132 | CORE_ADDR best_end = 0; | |
2133 | struct symtab *best_symtab = 0; | |
2134 | ||
2135 | /* Store here the first line number | |
2136 | of a file which contains the line at the smallest pc after PC. | |
2137 | If we don't find a line whose range contains PC, | |
2138 | we will use a line one less than this, | |
2139 | with a range from the start of that file to the first line's pc. */ | |
2140 | struct linetable_entry *alt = NULL; | |
2141 | struct symtab *alt_symtab = 0; | |
2142 | ||
2143 | /* Info on best line seen in this file. */ | |
2144 | ||
2145 | struct linetable_entry *prev; | |
2146 | ||
2147 | /* If this pc is not from the current frame, | |
2148 | it is the address of the end of a call instruction. | |
2149 | Quite likely that is the start of the following statement. | |
2150 | But what we want is the statement containing the instruction. | |
2151 | Fudge the pc to make sure we get that. */ | |
2152 | ||
fe39c653 | 2153 | init_sal (&val); /* initialize to zeroes */ |
c906108c | 2154 | |
b77b1eb7 JB |
2155 | /* It's tempting to assume that, if we can't find debugging info for |
2156 | any function enclosing PC, that we shouldn't search for line | |
2157 | number info, either. However, GAS can emit line number info for | |
2158 | assembly files --- very helpful when debugging hand-written | |
2159 | assembly code. In such a case, we'd have no debug info for the | |
2160 | function, but we would have line info. */ | |
648f4f79 | 2161 | |
c906108c SS |
2162 | if (notcurrent) |
2163 | pc -= 1; | |
2164 | ||
c5aa993b | 2165 | /* elz: added this because this function returned the wrong |
c906108c SS |
2166 | information if the pc belongs to a stub (import/export) |
2167 | to call a shlib function. This stub would be anywhere between | |
9af17804 DE |
2168 | two functions in the target, and the line info was erroneously |
2169 | taken to be the one of the line before the pc. | |
c5aa993b | 2170 | */ |
c906108c | 2171 | /* RT: Further explanation: |
c5aa993b | 2172 | |
c906108c SS |
2173 | * We have stubs (trampolines) inserted between procedures. |
2174 | * | |
2175 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
2176 | * exists in the main image. | |
2177 | * | |
2178 | * In the minimal symbol table, we have a bunch of symbols | |
2179 | * sorted by start address. The stubs are marked as "trampoline", | |
2180 | * the others appear as text. E.g.: | |
2181 | * | |
9af17804 | 2182 | * Minimal symbol table for main image |
c906108c SS |
2183 | * main: code for main (text symbol) |
2184 | * shr1: stub (trampoline symbol) | |
2185 | * foo: code for foo (text symbol) | |
2186 | * ... | |
2187 | * Minimal symbol table for "shr1" image: | |
2188 | * ... | |
2189 | * shr1: code for shr1 (text symbol) | |
2190 | * ... | |
2191 | * | |
2192 | * So the code below is trying to detect if we are in the stub | |
2193 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
2194 | * and if found, do the symbolization from the real-code address | |
2195 | * rather than the stub address. | |
2196 | * | |
2197 | * Assumptions being made about the minimal symbol table: | |
2198 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
2199 | * if we're really in the trampoline. If we're beyond it (say | |
9af17804 | 2200 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
2201 | * symbol (the "foo" text symbol for example) and will not |
2202 | * return the trampoline. | |
2203 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
2204 | * corresponding to the trampoline, and whose address will | |
2205 | * be different than the trampoline address. I put in a sanity | |
2206 | * check for the address being the same, to avoid an | |
2207 | * infinite recursion. | |
2208 | */ | |
c5aa993b JM |
2209 | msymbol = lookup_minimal_symbol_by_pc (pc); |
2210 | if (msymbol != NULL) | |
c906108c | 2211 | if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) |
c5aa993b | 2212 | { |
2335f48e | 2213 | mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol), |
5520a790 | 2214 | NULL); |
c5aa993b JM |
2215 | if (mfunsym == NULL) |
2216 | /* I eliminated this warning since it is coming out | |
2217 | * in the following situation: | |
2218 | * gdb shmain // test program with shared libraries | |
2219 | * (gdb) break shr1 // function in shared lib | |
2220 | * Warning: In stub for ... | |
9af17804 | 2221 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
2222 | * so of course we can't find the real func/line info, |
2223 | * but the "break" still works, and the warning is annoying. | |
2224 | * So I commented out the warning. RT */ | |
2335f48e | 2225 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ; |
c5aa993b | 2226 | /* fall through */ |
82cf6c60 | 2227 | else if (SYMBOL_VALUE_ADDRESS (mfunsym) == SYMBOL_VALUE_ADDRESS (msymbol)) |
c5aa993b JM |
2228 | /* Avoid infinite recursion */ |
2229 | /* See above comment about why warning is commented out */ | |
2335f48e | 2230 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ; |
c5aa993b JM |
2231 | /* fall through */ |
2232 | else | |
82cf6c60 | 2233 | return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 2234 | } |
c906108c SS |
2235 | |
2236 | ||
2237 | s = find_pc_sect_symtab (pc, section); | |
2238 | if (!s) | |
2239 | { | |
2240 | /* if no symbol information, return previous pc */ | |
2241 | if (notcurrent) | |
2242 | pc++; | |
2243 | val.pc = pc; | |
2244 | return val; | |
2245 | } | |
2246 | ||
2247 | bv = BLOCKVECTOR (s); | |
2248 | ||
2249 | /* Look at all the symtabs that share this blockvector. | |
2250 | They all have the same apriori range, that we found was right; | |
2251 | but they have different line tables. */ | |
2252 | ||
2253 | for (; s && BLOCKVECTOR (s) == bv; s = s->next) | |
2254 | { | |
2255 | /* Find the best line in this symtab. */ | |
2256 | l = LINETABLE (s); | |
2257 | if (!l) | |
c5aa993b | 2258 | continue; |
c906108c SS |
2259 | len = l->nitems; |
2260 | if (len <= 0) | |
2261 | { | |
2262 | /* I think len can be zero if the symtab lacks line numbers | |
2263 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
2264 | I'm not sure which, and maybe it depends on the symbol | |
2265 | reader). */ | |
2266 | continue; | |
2267 | } | |
2268 | ||
2269 | prev = NULL; | |
2270 | item = l->item; /* Get first line info */ | |
2271 | ||
2272 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 2273 | If so, record this file, and its first line, as best alternate. */ |
c906108c SS |
2274 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
2275 | { | |
2276 | alt = item; | |
2277 | alt_symtab = s; | |
2278 | } | |
2279 | ||
2280 | for (i = 0; i < len; i++, item++) | |
2281 | { | |
2282 | /* Leave prev pointing to the linetable entry for the last line | |
2283 | that started at or before PC. */ | |
2284 | if (item->pc > pc) | |
2285 | break; | |
2286 | ||
2287 | prev = item; | |
2288 | } | |
2289 | ||
2290 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
2291 | item points at the next line. If we ran off the end of the linetable |
2292 | (pc >= start of the last line), then prev == item. If pc < start of | |
2293 | the first line, prev will not be set. */ | |
c906108c SS |
2294 | |
2295 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
2296 | If so, record this file, and its best line, as best so far. Don't |
2297 | save prev if it represents the end of a function (i.e. line number | |
2298 | 0) instead of a real line. */ | |
c906108c | 2299 | |
083ae935 | 2300 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
2301 | { |
2302 | best = prev; | |
2303 | best_symtab = s; | |
25d53da1 KB |
2304 | |
2305 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
2306 | if (best_end <= best->pc) | |
2307 | best_end = 0; | |
c906108c | 2308 | } |
25d53da1 KB |
2309 | |
2310 | /* If another line (denoted by ITEM) is in the linetable and its | |
2311 | PC is after BEST's PC, but before the current BEST_END, then | |
2312 | use ITEM's PC as the new best_end. */ | |
2313 | if (best && i < len && item->pc > best->pc | |
2314 | && (best_end == 0 || best_end > item->pc)) | |
2315 | best_end = item->pc; | |
c906108c SS |
2316 | } |
2317 | ||
2318 | if (!best_symtab) | |
2319 | { | |
e86e87f7 DJ |
2320 | /* If we didn't find any line number info, just return zeros. |
2321 | We used to return alt->line - 1 here, but that could be | |
2322 | anywhere; if we don't have line number info for this PC, | |
2323 | don't make some up. */ | |
2324 | val.pc = pc; | |
c906108c | 2325 | } |
e8717518 FF |
2326 | else if (best->line == 0) |
2327 | { | |
2328 | /* If our best fit is in a range of PC's for which no line | |
2329 | number info is available (line number is zero) then we didn't | |
2330 | find any valid line information. */ | |
2331 | val.pc = pc; | |
2332 | } | |
c906108c SS |
2333 | else |
2334 | { | |
2335 | val.symtab = best_symtab; | |
2336 | val.line = best->line; | |
2337 | val.pc = best->pc; | |
2338 | if (best_end && (!alt || best_end < alt->pc)) | |
2339 | val.end = best_end; | |
2340 | else if (alt) | |
2341 | val.end = alt->pc; | |
2342 | else | |
2343 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
2344 | } | |
2345 | val.section = section; | |
2346 | return val; | |
2347 | } | |
2348 | ||
2349 | /* Backward compatibility (no section) */ | |
2350 | ||
2351 | struct symtab_and_line | |
fba45db2 | 2352 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 2353 | { |
714835d5 | 2354 | struct obj_section *section; |
c906108c SS |
2355 | |
2356 | section = find_pc_overlay (pc); | |
2357 | if (pc_in_unmapped_range (pc, section)) | |
2358 | pc = overlay_mapped_address (pc, section); | |
2359 | return find_pc_sect_line (pc, section, notcurrent); | |
2360 | } | |
c906108c | 2361 | \f |
c906108c SS |
2362 | /* Find line number LINE in any symtab whose name is the same as |
2363 | SYMTAB. | |
2364 | ||
2365 | If found, return the symtab that contains the linetable in which it was | |
2366 | found, set *INDEX to the index in the linetable of the best entry | |
2367 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
2368 | exact match. | |
2369 | ||
2370 | If not found, return NULL. */ | |
2371 | ||
50641945 | 2372 | struct symtab * |
fba45db2 | 2373 | find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) |
c906108c | 2374 | { |
6f43c46f | 2375 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
2376 | |
2377 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
2378 | so far seen. */ | |
2379 | ||
2380 | int best_index; | |
2381 | struct linetable *best_linetable; | |
2382 | struct symtab *best_symtab; | |
2383 | ||
2384 | /* First try looking it up in the given symtab. */ | |
2385 | best_linetable = LINETABLE (symtab); | |
2386 | best_symtab = symtab; | |
2387 | best_index = find_line_common (best_linetable, line, &exact); | |
2388 | if (best_index < 0 || !exact) | |
2389 | { | |
2390 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
2391 | another symtab with the same name. In the case of xcoff, |
2392 | multiple csects for one source file (produced by IBM's FORTRAN | |
2393 | compiler) produce multiple symtabs (this is unavoidable | |
2394 | assuming csects can be at arbitrary places in memory and that | |
2395 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
2396 | |
2397 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
2398 | or 0 if none has been seen so far. |
2399 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
2400 | int best; |
2401 | ||
2402 | struct objfile *objfile; | |
2403 | struct symtab *s; | |
51432cca | 2404 | struct partial_symtab *p; |
c906108c SS |
2405 | |
2406 | if (best_index >= 0) | |
2407 | best = best_linetable->item[best_index].line; | |
2408 | else | |
2409 | best = 0; | |
2410 | ||
51432cca CES |
2411 | ALL_PSYMTABS (objfile, p) |
2412 | { | |
2413 | if (strcmp (symtab->filename, p->filename) != 0) | |
2414 | continue; | |
2415 | PSYMTAB_TO_SYMTAB (p); | |
2416 | } | |
2417 | ||
c906108c | 2418 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
2419 | { |
2420 | struct linetable *l; | |
2421 | int ind; | |
c906108c | 2422 | |
6314a349 | 2423 | if (strcmp (symtab->filename, s->filename) != 0) |
c5aa993b JM |
2424 | continue; |
2425 | l = LINETABLE (s); | |
2426 | ind = find_line_common (l, line, &exact); | |
2427 | if (ind >= 0) | |
2428 | { | |
2429 | if (exact) | |
2430 | { | |
2431 | best_index = ind; | |
2432 | best_linetable = l; | |
2433 | best_symtab = s; | |
2434 | goto done; | |
2435 | } | |
2436 | if (best == 0 || l->item[ind].line < best) | |
2437 | { | |
2438 | best = l->item[ind].line; | |
2439 | best_index = ind; | |
2440 | best_linetable = l; | |
2441 | best_symtab = s; | |
2442 | } | |
2443 | } | |
2444 | } | |
c906108c | 2445 | } |
c5aa993b | 2446 | done: |
c906108c SS |
2447 | if (best_index < 0) |
2448 | return NULL; | |
2449 | ||
2450 | if (index) | |
2451 | *index = best_index; | |
2452 | if (exact_match) | |
2453 | *exact_match = exact; | |
2454 | ||
2455 | return best_symtab; | |
2456 | } | |
2457 | \f | |
2458 | /* Set the PC value for a given source file and line number and return true. | |
2459 | Returns zero for invalid line number (and sets the PC to 0). | |
2460 | The source file is specified with a struct symtab. */ | |
2461 | ||
2462 | int | |
fba45db2 | 2463 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
2464 | { |
2465 | struct linetable *l; | |
2466 | int ind; | |
2467 | ||
2468 | *pc = 0; | |
2469 | if (symtab == 0) | |
2470 | return 0; | |
2471 | ||
2472 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
2473 | if (symtab != NULL) | |
2474 | { | |
2475 | l = LINETABLE (symtab); | |
2476 | *pc = l->item[ind].pc; | |
2477 | return 1; | |
2478 | } | |
2479 | else | |
2480 | return 0; | |
2481 | } | |
2482 | ||
2483 | /* Find the range of pc values in a line. | |
2484 | Store the starting pc of the line into *STARTPTR | |
2485 | and the ending pc (start of next line) into *ENDPTR. | |
2486 | Returns 1 to indicate success. | |
2487 | Returns 0 if could not find the specified line. */ | |
2488 | ||
2489 | int | |
fba45db2 KB |
2490 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
2491 | CORE_ADDR *endptr) | |
c906108c SS |
2492 | { |
2493 | CORE_ADDR startaddr; | |
2494 | struct symtab_and_line found_sal; | |
2495 | ||
2496 | startaddr = sal.pc; | |
c5aa993b | 2497 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
2498 | return 0; |
2499 | ||
2500 | /* This whole function is based on address. For example, if line 10 has | |
2501 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
2502 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
2503 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
2504 | This also insures that we never give a range like "starts at 0x134 | |
2505 | and ends at 0x12c". */ | |
2506 | ||
2507 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
2508 | if (found_sal.line != sal.line) | |
2509 | { | |
2510 | /* The specified line (sal) has zero bytes. */ | |
2511 | *startptr = found_sal.pc; | |
2512 | *endptr = found_sal.pc; | |
2513 | } | |
2514 | else | |
2515 | { | |
2516 | *startptr = found_sal.pc; | |
2517 | *endptr = found_sal.end; | |
2518 | } | |
2519 | return 1; | |
2520 | } | |
2521 | ||
2522 | /* Given a line table and a line number, return the index into the line | |
2523 | table for the pc of the nearest line whose number is >= the specified one. | |
2524 | Return -1 if none is found. The value is >= 0 if it is an index. | |
2525 | ||
2526 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
2527 | ||
2528 | static int | |
aa1ee363 | 2529 | find_line_common (struct linetable *l, int lineno, |
fba45db2 | 2530 | int *exact_match) |
c906108c | 2531 | { |
52f0bd74 AC |
2532 | int i; |
2533 | int len; | |
c906108c SS |
2534 | |
2535 | /* BEST is the smallest linenumber > LINENO so far seen, | |
2536 | or 0 if none has been seen so far. | |
2537 | BEST_INDEX identifies the item for it. */ | |
2538 | ||
2539 | int best_index = -1; | |
2540 | int best = 0; | |
2541 | ||
b7589f7d DJ |
2542 | *exact_match = 0; |
2543 | ||
c906108c SS |
2544 | if (lineno <= 0) |
2545 | return -1; | |
2546 | if (l == 0) | |
2547 | return -1; | |
2548 | ||
2549 | len = l->nitems; | |
2550 | for (i = 0; i < len; i++) | |
2551 | { | |
aa1ee363 | 2552 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
2553 | |
2554 | if (item->line == lineno) | |
2555 | { | |
2556 | /* Return the first (lowest address) entry which matches. */ | |
2557 | *exact_match = 1; | |
2558 | return i; | |
2559 | } | |
2560 | ||
2561 | if (item->line > lineno && (best == 0 || item->line < best)) | |
2562 | { | |
2563 | best = item->line; | |
2564 | best_index = i; | |
2565 | } | |
2566 | } | |
2567 | ||
2568 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
2569 | return best_index; |
2570 | } | |
2571 | ||
2572 | int | |
fba45db2 | 2573 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
2574 | { |
2575 | struct symtab_and_line sal; | |
2576 | sal = find_pc_line (pc, 0); | |
2577 | *startptr = sal.pc; | |
2578 | *endptr = sal.end; | |
2579 | return sal.symtab != 0; | |
2580 | } | |
2581 | ||
bccdca4a UW |
2582 | /* Given a function start address PC and SECTION, find the first |
2583 | address after the function prologue. */ | |
2584 | CORE_ADDR | |
2585 | find_function_start_pc (struct gdbarch *gdbarch, | |
714835d5 | 2586 | CORE_ADDR pc, struct obj_section *section) |
bccdca4a UW |
2587 | { |
2588 | /* If the function is in an unmapped overlay, use its unmapped LMA address, | |
2589 | so that gdbarch_skip_prologue has something unique to work on. */ | |
2590 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
2591 | pc = overlay_unmapped_address (pc, section); | |
2592 | ||
2593 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
2594 | pc = gdbarch_skip_prologue (gdbarch, pc); | |
2595 | ||
2596 | /* For overlays, map pc back into its mapped VMA range. */ | |
2597 | pc = overlay_mapped_address (pc, section); | |
2598 | ||
2599 | return pc; | |
2600 | } | |
2601 | ||
8c7a1ee8 EZ |
2602 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
2603 | address for that function that has an entry in SYMTAB's line info | |
2604 | table. If such an entry cannot be found, return FUNC_ADDR | |
2605 | unaltered. */ | |
2606 | CORE_ADDR | |
2607 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) | |
2608 | { | |
2609 | CORE_ADDR func_start, func_end; | |
2610 | struct linetable *l; | |
2611 | int ind, i, len; | |
2612 | int best_lineno = 0; | |
2613 | CORE_ADDR best_pc = func_addr; | |
2614 | ||
2615 | /* Give up if this symbol has no lineinfo table. */ | |
2616 | l = LINETABLE (symtab); | |
2617 | if (l == NULL) | |
2618 | return func_addr; | |
2619 | ||
2620 | /* Get the range for the function's PC values, or give up if we | |
2621 | cannot, for some reason. */ | |
2622 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
2623 | return func_addr; | |
2624 | ||
2625 | /* Linetable entries are ordered by PC values, see the commentary in | |
2626 | symtab.h where `struct linetable' is defined. Thus, the first | |
2627 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
2628 | address we are looking for. */ | |
2629 | for (i = 0; i < l->nitems; i++) | |
2630 | { | |
2631 | struct linetable_entry *item = &(l->item[i]); | |
2632 | ||
2633 | /* Don't use line numbers of zero, they mark special entries in | |
2634 | the table. See the commentary on symtab.h before the | |
2635 | definition of struct linetable. */ | |
2636 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
2637 | return item->pc; | |
2638 | } | |
2639 | ||
2640 | return func_addr; | |
2641 | } | |
2642 | ||
c906108c SS |
2643 | /* Given a function symbol SYM, find the symtab and line for the start |
2644 | of the function. | |
2645 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
2646 | of real code inside the function. */ | |
2647 | ||
50641945 | 2648 | struct symtab_and_line |
fba45db2 | 2649 | find_function_start_sal (struct symbol *sym, int funfirstline) |
c906108c | 2650 | { |
bccdca4a UW |
2651 | struct block *block = SYMBOL_BLOCK_VALUE (sym); |
2652 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2653 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2654 | ||
c906108c SS |
2655 | CORE_ADDR pc; |
2656 | struct symtab_and_line sal; | |
edb3359d | 2657 | struct block *b, *function_block; |
c906108c | 2658 | |
bccdca4a UW |
2659 | pc = BLOCK_START (block); |
2660 | fixup_symbol_section (sym, objfile); | |
c906108c | 2661 | if (funfirstline) |
bccdca4a UW |
2662 | { |
2663 | /* Skip "first line" of function (which is actually its prologue). */ | |
714835d5 | 2664 | pc = find_function_start_pc (gdbarch, pc, SYMBOL_OBJ_SECTION (sym)); |
c906108c | 2665 | } |
714835d5 | 2666 | sal = find_pc_sect_line (pc, SYMBOL_OBJ_SECTION (sym), 0); |
c906108c | 2667 | |
a433963d | 2668 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next |
c906108c SS |
2669 | line is still part of the same function. */ |
2670 | if (sal.pc != pc | |
bccdca4a UW |
2671 | && BLOCK_START (block) <= sal.end |
2672 | && sal.end < BLOCK_END (block)) | |
c906108c SS |
2673 | { |
2674 | /* First pc of next line */ | |
2675 | pc = sal.end; | |
2676 | /* Recalculate the line number (might not be N+1). */ | |
714835d5 | 2677 | sal = find_pc_sect_line (pc, SYMBOL_OBJ_SECTION (sym), 0); |
c906108c | 2678 | } |
4309257c PM |
2679 | |
2680 | /* On targets with executable formats that don't have a concept of | |
2681 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
2682 | to `__main' in `main' between the prologue and before user | |
2683 | code. */ | |
2684 | if (funfirstline | |
d80b854b | 2685 | && gdbarch_skip_main_prologue_p (gdbarch) |
4309257c PM |
2686 | && SYMBOL_LINKAGE_NAME (sym) |
2687 | && strcmp (SYMBOL_LINKAGE_NAME (sym), "main") == 0) | |
2688 | { | |
d80b854b | 2689 | pc = gdbarch_skip_main_prologue (gdbarch, pc); |
4309257c | 2690 | /* Recalculate the line number (might not be N+1). */ |
714835d5 | 2691 | sal = find_pc_sect_line (pc, SYMBOL_OBJ_SECTION (sym), 0); |
4309257c PM |
2692 | } |
2693 | ||
8c7a1ee8 EZ |
2694 | /* If we still don't have a valid source line, try to find the first |
2695 | PC in the lineinfo table that belongs to the same function. This | |
2696 | happens with COFF debug info, which does not seem to have an | |
2697 | entry in lineinfo table for the code after the prologue which has | |
2698 | no direct relation to source. For example, this was found to be | |
2699 | the case with the DJGPP target using "gcc -gcoff" when the | |
2700 | compiler inserted code after the prologue to make sure the stack | |
2701 | is aligned. */ | |
2702 | if (funfirstline && sal.symtab == NULL) | |
2703 | { | |
2704 | pc = skip_prologue_using_lineinfo (pc, SYMBOL_SYMTAB (sym)); | |
2705 | /* Recalculate the line number. */ | |
2706 | sal = find_pc_sect_line (pc, SYMBOL_OBJ_SECTION (sym), 0); | |
2707 | } | |
2708 | ||
c906108c | 2709 | sal.pc = pc; |
c906108c | 2710 | |
edb3359d DJ |
2711 | /* Check if we are now inside an inlined function. If we can, |
2712 | use the call site of the function instead. */ | |
2713 | b = block_for_pc_sect (sal.pc, SYMBOL_OBJ_SECTION (sym)); | |
2714 | function_block = NULL; | |
2715 | while (b != NULL) | |
2716 | { | |
2717 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
2718 | function_block = b; | |
2719 | else if (BLOCK_FUNCTION (b) != NULL) | |
2720 | break; | |
2721 | b = BLOCK_SUPERBLOCK (b); | |
2722 | } | |
2723 | if (function_block != NULL | |
2724 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
2725 | { | |
2726 | sal.line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); | |
2727 | sal.symtab = SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block)); | |
2728 | } | |
2729 | ||
c906108c SS |
2730 | return sal; |
2731 | } | |
50641945 | 2732 | |
c906108c SS |
2733 | /* If P is of the form "operator[ \t]+..." where `...' is |
2734 | some legitimate operator text, return a pointer to the | |
2735 | beginning of the substring of the operator text. | |
2736 | Otherwise, return "". */ | |
2737 | char * | |
fba45db2 | 2738 | operator_chars (char *p, char **end) |
c906108c SS |
2739 | { |
2740 | *end = ""; | |
2741 | if (strncmp (p, "operator", 8)) | |
2742 | return *end; | |
2743 | p += 8; | |
2744 | ||
2745 | /* Don't get faked out by `operator' being part of a longer | |
2746 | identifier. */ | |
c5aa993b | 2747 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
2748 | return *end; |
2749 | ||
2750 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
2751 | while (*p == ' ' || *p == '\t') | |
2752 | p++; | |
2753 | ||
2754 | /* Recognize 'operator TYPENAME'. */ | |
2755 | ||
c5aa993b | 2756 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 2757 | { |
aa1ee363 | 2758 | char *q = p + 1; |
c5aa993b | 2759 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
2760 | q++; |
2761 | *end = q; | |
2762 | return p; | |
2763 | } | |
2764 | ||
53e8ad3d MS |
2765 | while (*p) |
2766 | switch (*p) | |
2767 | { | |
2768 | case '\\': /* regexp quoting */ | |
2769 | if (p[1] == '*') | |
2770 | { | |
2771 | if (p[2] == '=') /* 'operator\*=' */ | |
2772 | *end = p + 3; | |
2773 | else /* 'operator\*' */ | |
2774 | *end = p + 2; | |
2775 | return p; | |
2776 | } | |
2777 | else if (p[1] == '[') | |
2778 | { | |
2779 | if (p[2] == ']') | |
8a3fe4f8 | 2780 | error (_("mismatched quoting on brackets, try 'operator\\[\\]'")); |
53e8ad3d MS |
2781 | else if (p[2] == '\\' && p[3] == ']') |
2782 | { | |
2783 | *end = p + 4; /* 'operator\[\]' */ | |
2784 | return p; | |
2785 | } | |
2786 | else | |
8a3fe4f8 | 2787 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 2788 | } |
9af17804 | 2789 | else |
53e8ad3d MS |
2790 | { |
2791 | /* Gratuitous qoute: skip it and move on. */ | |
2792 | p++; | |
2793 | continue; | |
2794 | } | |
2795 | break; | |
2796 | case '!': | |
2797 | case '=': | |
2798 | case '*': | |
2799 | case '/': | |
2800 | case '%': | |
2801 | case '^': | |
2802 | if (p[1] == '=') | |
2803 | *end = p + 2; | |
2804 | else | |
2805 | *end = p + 1; | |
2806 | return p; | |
2807 | case '<': | |
2808 | case '>': | |
2809 | case '+': | |
2810 | case '-': | |
2811 | case '&': | |
2812 | case '|': | |
2813 | if (p[0] == '-' && p[1] == '>') | |
2814 | { | |
2815 | /* Struct pointer member operator 'operator->'. */ | |
2816 | if (p[2] == '*') | |
2817 | { | |
2818 | *end = p + 3; /* 'operator->*' */ | |
2819 | return p; | |
2820 | } | |
2821 | else if (p[2] == '\\') | |
2822 | { | |
2823 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
2824 | return p; | |
2825 | } | |
2826 | else | |
2827 | { | |
2828 | *end = p + 2; /* 'operator->' */ | |
2829 | return p; | |
2830 | } | |
2831 | } | |
2832 | if (p[1] == '=' || p[1] == p[0]) | |
2833 | *end = p + 2; | |
2834 | else | |
2835 | *end = p + 1; | |
2836 | return p; | |
2837 | case '~': | |
2838 | case ',': | |
c5aa993b | 2839 | *end = p + 1; |
53e8ad3d MS |
2840 | return p; |
2841 | case '(': | |
2842 | if (p[1] != ')') | |
8a3fe4f8 | 2843 | error (_("`operator ()' must be specified without whitespace in `()'")); |
c5aa993b | 2844 | *end = p + 2; |
53e8ad3d MS |
2845 | return p; |
2846 | case '?': | |
2847 | if (p[1] != ':') | |
8a3fe4f8 | 2848 | error (_("`operator ?:' must be specified without whitespace in `?:'")); |
53e8ad3d MS |
2849 | *end = p + 2; |
2850 | return p; | |
2851 | case '[': | |
2852 | if (p[1] != ']') | |
8a3fe4f8 | 2853 | error (_("`operator []' must be specified without whitespace in `[]'")); |
53e8ad3d MS |
2854 | *end = p + 2; |
2855 | return p; | |
2856 | default: | |
8a3fe4f8 | 2857 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
2858 | break; |
2859 | } | |
2860 | ||
c906108c SS |
2861 | *end = ""; |
2862 | return *end; | |
2863 | } | |
c906108c | 2864 | \f |
c5aa993b | 2865 | |
c94fdfd0 EZ |
2866 | /* If FILE is not already in the table of files, return zero; |
2867 | otherwise return non-zero. Optionally add FILE to the table if ADD | |
2868 | is non-zero. If *FIRST is non-zero, forget the old table | |
2869 | contents. */ | |
2870 | static int | |
2871 | filename_seen (const char *file, int add, int *first) | |
c906108c | 2872 | { |
c94fdfd0 EZ |
2873 | /* Table of files seen so far. */ |
2874 | static const char **tab = NULL; | |
c906108c SS |
2875 | /* Allocated size of tab in elements. |
2876 | Start with one 256-byte block (when using GNU malloc.c). | |
2877 | 24 is the malloc overhead when range checking is in effect. */ | |
2878 | static int tab_alloc_size = (256 - 24) / sizeof (char *); | |
2879 | /* Current size of tab in elements. */ | |
2880 | static int tab_cur_size; | |
c94fdfd0 | 2881 | const char **p; |
c906108c SS |
2882 | |
2883 | if (*first) | |
2884 | { | |
2885 | if (tab == NULL) | |
c94fdfd0 | 2886 | tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab)); |
c906108c SS |
2887 | tab_cur_size = 0; |
2888 | } | |
2889 | ||
c94fdfd0 | 2890 | /* Is FILE in tab? */ |
c906108c | 2891 | for (p = tab; p < tab + tab_cur_size; p++) |
c94fdfd0 EZ |
2892 | if (strcmp (*p, file) == 0) |
2893 | return 1; | |
2894 | ||
2895 | /* No; maybe add it to tab. */ | |
2896 | if (add) | |
c906108c | 2897 | { |
c94fdfd0 EZ |
2898 | if (tab_cur_size == tab_alloc_size) |
2899 | { | |
2900 | tab_alloc_size *= 2; | |
2901 | tab = (const char **) xrealloc ((char *) tab, | |
2902 | tab_alloc_size * sizeof (*tab)); | |
2903 | } | |
2904 | tab[tab_cur_size++] = file; | |
c906108c | 2905 | } |
c906108c | 2906 | |
c94fdfd0 EZ |
2907 | return 0; |
2908 | } | |
2909 | ||
2910 | /* Slave routine for sources_info. Force line breaks at ,'s. | |
2911 | NAME is the name to print and *FIRST is nonzero if this is the first | |
2912 | name printed. Set *FIRST to zero. */ | |
2913 | static void | |
d092d1a2 | 2914 | output_source_filename (const char *name, int *first) |
c94fdfd0 EZ |
2915 | { |
2916 | /* Since a single source file can result in several partial symbol | |
2917 | tables, we need to avoid printing it more than once. Note: if | |
2918 | some of the psymtabs are read in and some are not, it gets | |
2919 | printed both under "Source files for which symbols have been | |
2920 | read" and "Source files for which symbols will be read in on | |
2921 | demand". I consider this a reasonable way to deal with the | |
2922 | situation. I'm not sure whether this can also happen for | |
2923 | symtabs; it doesn't hurt to check. */ | |
2924 | ||
2925 | /* Was NAME already seen? */ | |
2926 | if (filename_seen (name, 1, first)) | |
2927 | { | |
2928 | /* Yes; don't print it again. */ | |
2929 | return; | |
2930 | } | |
2931 | /* No; print it and reset *FIRST. */ | |
c906108c SS |
2932 | if (*first) |
2933 | { | |
2934 | *first = 0; | |
2935 | } | |
2936 | else | |
2937 | { | |
2938 | printf_filtered (", "); | |
2939 | } | |
2940 | ||
2941 | wrap_here (""); | |
2942 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 2943 | } |
c906108c SS |
2944 | |
2945 | static void | |
fba45db2 | 2946 | sources_info (char *ignore, int from_tty) |
c906108c | 2947 | { |
52f0bd74 AC |
2948 | struct symtab *s; |
2949 | struct partial_symtab *ps; | |
2950 | struct objfile *objfile; | |
c906108c | 2951 | int first; |
c5aa993b | 2952 | |
c906108c SS |
2953 | if (!have_full_symbols () && !have_partial_symbols ()) |
2954 | { | |
8a3fe4f8 | 2955 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 2956 | } |
c5aa993b | 2957 | |
c906108c SS |
2958 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
2959 | ||
2960 | first = 1; | |
2961 | ALL_SYMTABS (objfile, s) | |
c5aa993b | 2962 | { |
d092d1a2 DJ |
2963 | const char *fullname = symtab_to_fullname (s); |
2964 | output_source_filename (fullname ? fullname : s->filename, &first); | |
c5aa993b | 2965 | } |
c906108c | 2966 | printf_filtered ("\n\n"); |
c5aa993b | 2967 | |
c906108c SS |
2968 | printf_filtered ("Source files for which symbols will be read in on demand:\n\n"); |
2969 | ||
2970 | first = 1; | |
2971 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
2972 | { |
2973 | if (!ps->readin) | |
2974 | { | |
d092d1a2 DJ |
2975 | const char *fullname = psymtab_to_fullname (ps); |
2976 | output_source_filename (fullname ? fullname : ps->filename, &first); | |
c5aa993b JM |
2977 | } |
2978 | } | |
c906108c SS |
2979 | printf_filtered ("\n"); |
2980 | } | |
2981 | ||
2982 | static int | |
fd118b61 | 2983 | file_matches (char *file, char *files[], int nfiles) |
c906108c SS |
2984 | { |
2985 | int i; | |
2986 | ||
2987 | if (file != NULL && nfiles != 0) | |
2988 | { | |
2989 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 2990 | { |
31889e00 | 2991 | if (strcmp (files[i], lbasename (file)) == 0) |
c5aa993b JM |
2992 | return 1; |
2993 | } | |
c906108c SS |
2994 | } |
2995 | else if (nfiles == 0) | |
2996 | return 1; | |
2997 | return 0; | |
2998 | } | |
2999 | ||
3000 | /* Free any memory associated with a search. */ | |
3001 | void | |
fba45db2 | 3002 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
3003 | { |
3004 | struct symbol_search *p; | |
3005 | struct symbol_search *next; | |
3006 | ||
3007 | for (p = symbols; p != NULL; p = next) | |
3008 | { | |
3009 | next = p->next; | |
b8c9b27d | 3010 | xfree (p); |
c906108c SS |
3011 | } |
3012 | } | |
3013 | ||
5bd98722 AC |
3014 | static void |
3015 | do_free_search_symbols_cleanup (void *symbols) | |
3016 | { | |
3017 | free_search_symbols (symbols); | |
3018 | } | |
3019 | ||
3020 | struct cleanup * | |
3021 | make_cleanup_free_search_symbols (struct symbol_search *symbols) | |
3022 | { | |
3023 | return make_cleanup (do_free_search_symbols_cleanup, symbols); | |
3024 | } | |
3025 | ||
434d2d4f DJ |
3026 | /* Helper function for sort_search_symbols and qsort. Can only |
3027 | sort symbols, not minimal symbols. */ | |
3028 | static int | |
3029 | compare_search_syms (const void *sa, const void *sb) | |
3030 | { | |
3031 | struct symbol_search **sym_a = (struct symbol_search **) sa; | |
3032 | struct symbol_search **sym_b = (struct symbol_search **) sb; | |
3033 | ||
de5ad195 DC |
3034 | return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol), |
3035 | SYMBOL_PRINT_NAME ((*sym_b)->symbol)); | |
434d2d4f DJ |
3036 | } |
3037 | ||
3038 | /* Sort the ``nfound'' symbols in the list after prevtail. Leave | |
3039 | prevtail where it is, but update its next pointer to point to | |
3040 | the first of the sorted symbols. */ | |
3041 | static struct symbol_search * | |
3042 | sort_search_symbols (struct symbol_search *prevtail, int nfound) | |
3043 | { | |
3044 | struct symbol_search **symbols, *symp, *old_next; | |
3045 | int i; | |
3046 | ||
3047 | symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *) | |
3048 | * nfound); | |
3049 | symp = prevtail->next; | |
3050 | for (i = 0; i < nfound; i++) | |
3051 | { | |
3052 | symbols[i] = symp; | |
3053 | symp = symp->next; | |
3054 | } | |
3055 | /* Generally NULL. */ | |
3056 | old_next = symp; | |
3057 | ||
3058 | qsort (symbols, nfound, sizeof (struct symbol_search *), | |
3059 | compare_search_syms); | |
3060 | ||
3061 | symp = prevtail; | |
3062 | for (i = 0; i < nfound; i++) | |
3063 | { | |
3064 | symp->next = symbols[i]; | |
3065 | symp = symp->next; | |
3066 | } | |
3067 | symp->next = old_next; | |
3068 | ||
8ed32cc0 | 3069 | xfree (symbols); |
434d2d4f DJ |
3070 | return symp; |
3071 | } | |
5bd98722 | 3072 | |
c906108c SS |
3073 | /* Search the symbol table for matches to the regular expression REGEXP, |
3074 | returning the results in *MATCHES. | |
3075 | ||
3076 | Only symbols of KIND are searched: | |
176620f1 EZ |
3077 | FUNCTIONS_DOMAIN - search all functions |
3078 | TYPES_DOMAIN - search all type names | |
176620f1 | 3079 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
c5aa993b | 3080 | and constants (enums) |
c906108c SS |
3081 | |
3082 | free_search_symbols should be called when *MATCHES is no longer needed. | |
434d2d4f DJ |
3083 | |
3084 | The results are sorted locally; each symtab's global and static blocks are | |
3085 | separately alphabetized. | |
c5aa993b | 3086 | */ |
c906108c | 3087 | void |
176620f1 | 3088 | search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[], |
fd118b61 | 3089 | struct symbol_search **matches) |
c906108c | 3090 | { |
52f0bd74 AC |
3091 | struct symtab *s; |
3092 | struct partial_symtab *ps; | |
3093 | struct blockvector *bv; | |
52f0bd74 AC |
3094 | struct block *b; |
3095 | int i = 0; | |
de4f826b | 3096 | struct dict_iterator iter; |
52f0bd74 | 3097 | struct symbol *sym; |
c906108c SS |
3098 | struct partial_symbol **psym; |
3099 | struct objfile *objfile; | |
3100 | struct minimal_symbol *msymbol; | |
3101 | char *val; | |
3102 | int found_misc = 0; | |
3103 | static enum minimal_symbol_type types[] | |
c5aa993b JM |
3104 | = |
3105 | {mst_data, mst_text, mst_abs, mst_unknown}; | |
c906108c | 3106 | static enum minimal_symbol_type types2[] |
c5aa993b JM |
3107 | = |
3108 | {mst_bss, mst_file_text, mst_abs, mst_unknown}; | |
c906108c | 3109 | static enum minimal_symbol_type types3[] |
c5aa993b JM |
3110 | = |
3111 | {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown}; | |
c906108c | 3112 | static enum minimal_symbol_type types4[] |
c5aa993b JM |
3113 | = |
3114 | {mst_file_bss, mst_text, mst_abs, mst_unknown}; | |
c906108c SS |
3115 | enum minimal_symbol_type ourtype; |
3116 | enum minimal_symbol_type ourtype2; | |
3117 | enum minimal_symbol_type ourtype3; | |
3118 | enum minimal_symbol_type ourtype4; | |
3119 | struct symbol_search *sr; | |
3120 | struct symbol_search *psr; | |
3121 | struct symbol_search *tail; | |
3122 | struct cleanup *old_chain = NULL; | |
3123 | ||
176620f1 | 3124 | if (kind < VARIABLES_DOMAIN) |
8a3fe4f8 | 3125 | error (_("must search on specific domain")); |
c906108c | 3126 | |
176620f1 EZ |
3127 | ourtype = types[(int) (kind - VARIABLES_DOMAIN)]; |
3128 | ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)]; | |
3129 | ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)]; | |
3130 | ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)]; | |
c906108c SS |
3131 | |
3132 | sr = *matches = NULL; | |
3133 | tail = NULL; | |
3134 | ||
3135 | if (regexp != NULL) | |
3136 | { | |
3137 | /* Make sure spacing is right for C++ operators. | |
3138 | This is just a courtesy to make the matching less sensitive | |
3139 | to how many spaces the user leaves between 'operator' | |
3140 | and <TYPENAME> or <OPERATOR>. */ | |
3141 | char *opend; | |
3142 | char *opname = operator_chars (regexp, &opend); | |
3143 | if (*opname) | |
c5aa993b JM |
3144 | { |
3145 | int fix = -1; /* -1 means ok; otherwise number of spaces needed. */ | |
3146 | if (isalpha (*opname) || *opname == '_' || *opname == '$') | |
3147 | { | |
3148 | /* There should 1 space between 'operator' and 'TYPENAME'. */ | |
3149 | if (opname[-1] != ' ' || opname[-2] == ' ') | |
3150 | fix = 1; | |
3151 | } | |
3152 | else | |
3153 | { | |
3154 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ | |
3155 | if (opname[-1] == ' ') | |
3156 | fix = 0; | |
3157 | } | |
3158 | /* If wrong number of spaces, fix it. */ | |
3159 | if (fix >= 0) | |
3160 | { | |
045f55a6 | 3161 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
c5aa993b JM |
3162 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
3163 | regexp = tmp; | |
3164 | } | |
3165 | } | |
3166 | ||
c906108c | 3167 | if (0 != (val = re_comp (regexp))) |
8a3fe4f8 | 3168 | error (_("Invalid regexp (%s): %s"), val, regexp); |
c906108c SS |
3169 | } |
3170 | ||
3171 | /* Search through the partial symtabs *first* for all symbols | |
3172 | matching the regexp. That way we don't have to reproduce all of | |
3173 | the machinery below. */ | |
3174 | ||
3175 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
3176 | { |
3177 | struct partial_symbol **bound, **gbound, **sbound; | |
3178 | int keep_going = 1; | |
3179 | ||
3180 | if (ps->readin) | |
3181 | continue; | |
3182 | ||
3183 | gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; | |
3184 | sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; | |
3185 | bound = gbound; | |
3186 | ||
3187 | /* Go through all of the symbols stored in a partial | |
3188 | symtab in one loop. */ | |
3189 | psym = objfile->global_psymbols.list + ps->globals_offset; | |
3190 | while (keep_going) | |
3191 | { | |
3192 | if (psym >= bound) | |
3193 | { | |
3194 | if (bound == gbound && ps->n_static_syms != 0) | |
3195 | { | |
3196 | psym = objfile->static_psymbols.list + ps->statics_offset; | |
3197 | bound = sbound; | |
3198 | } | |
3199 | else | |
3200 | keep_going = 0; | |
3201 | continue; | |
3202 | } | |
3203 | else | |
3204 | { | |
3205 | QUIT; | |
3206 | ||
3207 | /* If it would match (logic taken from loop below) | |
cb1df416 DJ |
3208 | load the file and go on to the next one. We check the |
3209 | filename here, but that's a bit bogus: we don't know | |
3210 | what file it really comes from until we have full | |
3211 | symtabs. The symbol might be in a header file included by | |
3212 | this psymtab. This only affects Insight. */ | |
c5aa993b | 3213 | if (file_matches (ps->filename, files, nfiles) |
25120b0d DC |
3214 | && ((regexp == NULL |
3215 | || re_exec (SYMBOL_NATURAL_NAME (*psym)) != 0) | |
176620f1 | 3216 | && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (*psym) != LOC_TYPEDEF |
c5aa993b | 3217 | && SYMBOL_CLASS (*psym) != LOC_BLOCK) |
176620f1 | 3218 | || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK) |
bd2e94ce | 3219 | || (kind == TYPES_DOMAIN && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)))) |
c5aa993b JM |
3220 | { |
3221 | PSYMTAB_TO_SYMTAB (ps); | |
3222 | keep_going = 0; | |
3223 | } | |
3224 | } | |
3225 | psym++; | |
3226 | } | |
3227 | } | |
c906108c SS |
3228 | |
3229 | /* Here, we search through the minimal symbol tables for functions | |
3230 | and variables that match, and force their symbols to be read. | |
3231 | This is in particular necessary for demangled variable names, | |
3232 | which are no longer put into the partial symbol tables. | |
3233 | The symbol will then be found during the scan of symtabs below. | |
3234 | ||
3235 | For functions, find_pc_symtab should succeed if we have debug info | |
3236 | for the function, for variables we have to call lookup_symbol | |
3237 | to determine if the variable has debug info. | |
3238 | If the lookup fails, set found_misc so that we will rescan to print | |
3239 | any matching symbols without debug info. | |
c5aa993b | 3240 | */ |
c906108c | 3241 | |
176620f1 | 3242 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
3243 | { |
3244 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3245 | { |
3246 | if (MSYMBOL_TYPE (msymbol) == ourtype || | |
3247 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3248 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3249 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3250 | { | |
25120b0d DC |
3251 | if (regexp == NULL |
3252 | || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0) | |
c5aa993b JM |
3253 | { |
3254 | if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) | |
3255 | { | |
b1262a02 DC |
3256 | /* FIXME: carlton/2003-02-04: Given that the |
3257 | semantics of lookup_symbol keeps on changing | |
3258 | slightly, it would be a nice idea if we had a | |
3259 | function lookup_symbol_minsym that found the | |
3260 | symbol associated to a given minimal symbol (if | |
3261 | any). */ | |
176620f1 | 3262 | if (kind == FUNCTIONS_DOMAIN |
2335f48e | 3263 | || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
b1262a02 | 3264 | (struct block *) NULL, |
2570f2b7 | 3265 | VAR_DOMAIN, 0) |
53c5240f | 3266 | == NULL) |
b1262a02 | 3267 | found_misc = 1; |
c5aa993b JM |
3268 | } |
3269 | } | |
3270 | } | |
3271 | } | |
c906108c SS |
3272 | } |
3273 | ||
11309657 | 3274 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3275 | { |
3276 | bv = BLOCKVECTOR (s); | |
c5aa993b JM |
3277 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
3278 | { | |
434d2d4f DJ |
3279 | struct symbol_search *prevtail = tail; |
3280 | int nfound = 0; | |
c5aa993b | 3281 | b = BLOCKVECTOR_BLOCK (bv, i); |
de4f826b | 3282 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3283 | { |
cb1df416 | 3284 | struct symtab *real_symtab = SYMBOL_SYMTAB (sym); |
c5aa993b | 3285 | QUIT; |
cb1df416 DJ |
3286 | |
3287 | if (file_matches (real_symtab->filename, files, nfiles) | |
25120b0d DC |
3288 | && ((regexp == NULL |
3289 | || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0) | |
176620f1 | 3290 | && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF |
c5aa993b JM |
3291 | && SYMBOL_CLASS (sym) != LOC_BLOCK |
3292 | && SYMBOL_CLASS (sym) != LOC_CONST) | |
176620f1 | 3293 | || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK) |
bd2e94ce | 3294 | || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) |
c5aa993b JM |
3295 | { |
3296 | /* match */ | |
3297 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
3298 | psr->block = i; | |
cb1df416 | 3299 | psr->symtab = real_symtab; |
c5aa993b JM |
3300 | psr->symbol = sym; |
3301 | psr->msymbol = NULL; | |
3302 | psr->next = NULL; | |
3303 | if (tail == NULL) | |
434d2d4f | 3304 | sr = psr; |
c5aa993b JM |
3305 | else |
3306 | tail->next = psr; | |
3307 | tail = psr; | |
434d2d4f DJ |
3308 | nfound ++; |
3309 | } | |
3310 | } | |
3311 | if (nfound > 0) | |
3312 | { | |
3313 | if (prevtail == NULL) | |
3314 | { | |
3315 | struct symbol_search dummy; | |
3316 | ||
3317 | dummy.next = sr; | |
3318 | tail = sort_search_symbols (&dummy, nfound); | |
3319 | sr = dummy.next; | |
3320 | ||
3321 | old_chain = make_cleanup_free_search_symbols (sr); | |
c5aa993b | 3322 | } |
434d2d4f DJ |
3323 | else |
3324 | tail = sort_search_symbols (prevtail, nfound); | |
c5aa993b JM |
3325 | } |
3326 | } | |
c5aa993b | 3327 | } |
c906108c SS |
3328 | |
3329 | /* If there are no eyes, avoid all contact. I mean, if there are | |
3330 | no debug symbols, then print directly from the msymbol_vector. */ | |
3331 | ||
176620f1 | 3332 | if (found_misc || kind != FUNCTIONS_DOMAIN) |
c906108c SS |
3333 | { |
3334 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3335 | { |
3336 | if (MSYMBOL_TYPE (msymbol) == ourtype || | |
3337 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3338 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3339 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3340 | { | |
25120b0d DC |
3341 | if (regexp == NULL |
3342 | || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0) | |
c5aa993b JM |
3343 | { |
3344 | /* Functions: Look up by address. */ | |
176620f1 | 3345 | if (kind != FUNCTIONS_DOMAIN || |
c5aa993b JM |
3346 | (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) |
3347 | { | |
3348 | /* Variables/Absolutes: Look up by name */ | |
2335f48e | 3349 | if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
2570f2b7 UW |
3350 | (struct block *) NULL, VAR_DOMAIN, 0) |
3351 | == NULL) | |
c5aa993b JM |
3352 | { |
3353 | /* match */ | |
3354 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
3355 | psr->block = i; | |
3356 | psr->msymbol = msymbol; | |
3357 | psr->symtab = NULL; | |
3358 | psr->symbol = NULL; | |
3359 | psr->next = NULL; | |
3360 | if (tail == NULL) | |
3361 | { | |
3362 | sr = psr; | |
5bd98722 | 3363 | old_chain = make_cleanup_free_search_symbols (sr); |
c5aa993b JM |
3364 | } |
3365 | else | |
3366 | tail->next = psr; | |
3367 | tail = psr; | |
3368 | } | |
3369 | } | |
3370 | } | |
3371 | } | |
3372 | } | |
c906108c SS |
3373 | } |
3374 | ||
3375 | *matches = sr; | |
3376 | if (sr != NULL) | |
3377 | discard_cleanups (old_chain); | |
3378 | } | |
3379 | ||
3380 | /* Helper function for symtab_symbol_info, this function uses | |
3381 | the data returned from search_symbols() to print information | |
3382 | regarding the match to gdb_stdout. | |
c5aa993b | 3383 | */ |
c906108c | 3384 | static void |
176620f1 | 3385 | print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym, |
fba45db2 | 3386 | int block, char *last) |
c906108c SS |
3387 | { |
3388 | if (last == NULL || strcmp (last, s->filename) != 0) | |
3389 | { | |
3390 | fputs_filtered ("\nFile ", gdb_stdout); | |
3391 | fputs_filtered (s->filename, gdb_stdout); | |
3392 | fputs_filtered (":\n", gdb_stdout); | |
3393 | } | |
3394 | ||
176620f1 | 3395 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 3396 | printf_filtered ("static "); |
c5aa993b | 3397 | |
c906108c | 3398 | /* Typedef that is not a C++ class */ |
176620f1 EZ |
3399 | if (kind == TYPES_DOMAIN |
3400 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 3401 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c906108c | 3402 | /* variable, func, or typedef-that-is-c++-class */ |
176620f1 EZ |
3403 | else if (kind < TYPES_DOMAIN || |
3404 | (kind == TYPES_DOMAIN && | |
3405 | SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
3406 | { |
3407 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 3408 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 3409 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 3410 | gdb_stdout, 0); |
c906108c SS |
3411 | |
3412 | printf_filtered (";\n"); | |
3413 | } | |
c906108c SS |
3414 | } |
3415 | ||
3416 | /* This help function for symtab_symbol_info() prints information | |
3417 | for non-debugging symbols to gdb_stdout. | |
c5aa993b | 3418 | */ |
c906108c | 3419 | static void |
fba45db2 | 3420 | print_msymbol_info (struct minimal_symbol *msymbol) |
c906108c | 3421 | { |
d80b854b | 3422 | struct gdbarch *gdbarch = get_objfile_arch (msymbol_objfile (msymbol)); |
3ac4495a MS |
3423 | char *tmp; |
3424 | ||
d80b854b | 3425 | if (gdbarch_addr_bit (gdbarch) <= 32) |
bb599908 PH |
3426 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol) |
3427 | & (CORE_ADDR) 0xffffffff, | |
3428 | 8); | |
3ac4495a | 3429 | else |
bb599908 PH |
3430 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol), |
3431 | 16); | |
3ac4495a | 3432 | printf_filtered ("%s %s\n", |
de5ad195 | 3433 | tmp, SYMBOL_PRINT_NAME (msymbol)); |
c906108c SS |
3434 | } |
3435 | ||
3436 | /* This is the guts of the commands "info functions", "info types", and | |
3437 | "info variables". It calls search_symbols to find all matches and then | |
3438 | print_[m]symbol_info to print out some useful information about the | |
3439 | matches. | |
c5aa993b | 3440 | */ |
c906108c | 3441 | static void |
176620f1 | 3442 | symtab_symbol_info (char *regexp, domain_enum kind, int from_tty) |
c906108c SS |
3443 | { |
3444 | static char *classnames[] | |
c5aa993b JM |
3445 | = |
3446 | {"variable", "function", "type", "method"}; | |
c906108c SS |
3447 | struct symbol_search *symbols; |
3448 | struct symbol_search *p; | |
3449 | struct cleanup *old_chain; | |
3450 | char *last_filename = NULL; | |
3451 | int first = 1; | |
3452 | ||
3453 | /* must make sure that if we're interrupted, symbols gets freed */ | |
3454 | search_symbols (regexp, kind, 0, (char **) NULL, &symbols); | |
5bd98722 | 3455 | old_chain = make_cleanup_free_search_symbols (symbols); |
c906108c SS |
3456 | |
3457 | printf_filtered (regexp | |
c5aa993b JM |
3458 | ? "All %ss matching regular expression \"%s\":\n" |
3459 | : "All defined %ss:\n", | |
176620f1 | 3460 | classnames[(int) (kind - VARIABLES_DOMAIN)], regexp); |
c906108c SS |
3461 | |
3462 | for (p = symbols; p != NULL; p = p->next) | |
3463 | { | |
3464 | QUIT; | |
3465 | ||
3466 | if (p->msymbol != NULL) | |
c5aa993b JM |
3467 | { |
3468 | if (first) | |
3469 | { | |
3470 | printf_filtered ("\nNon-debugging symbols:\n"); | |
3471 | first = 0; | |
3472 | } | |
3473 | print_msymbol_info (p->msymbol); | |
3474 | } | |
c906108c | 3475 | else |
c5aa993b JM |
3476 | { |
3477 | print_symbol_info (kind, | |
3478 | p->symtab, | |
3479 | p->symbol, | |
3480 | p->block, | |
3481 | last_filename); | |
3482 | last_filename = p->symtab->filename; | |
3483 | } | |
c906108c SS |
3484 | } |
3485 | ||
3486 | do_cleanups (old_chain); | |
3487 | } | |
3488 | ||
3489 | static void | |
fba45db2 | 3490 | variables_info (char *regexp, int from_tty) |
c906108c | 3491 | { |
176620f1 | 3492 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
3493 | } |
3494 | ||
3495 | static void | |
fba45db2 | 3496 | functions_info (char *regexp, int from_tty) |
c906108c | 3497 | { |
176620f1 | 3498 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
3499 | } |
3500 | ||
357e46e7 | 3501 | |
c906108c | 3502 | static void |
fba45db2 | 3503 | types_info (char *regexp, int from_tty) |
c906108c | 3504 | { |
176620f1 | 3505 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
3506 | } |
3507 | ||
c906108c | 3508 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 3509 | |
8b93c638 | 3510 | void |
fba45db2 | 3511 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
3512 | { |
3513 | rbreak_command (regexp, from_tty); | |
3514 | } | |
8926118c | 3515 | |
c906108c | 3516 | static void |
fba45db2 | 3517 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
3518 | { |
3519 | struct symbol_search *ss; | |
3520 | struct symbol_search *p; | |
3521 | struct cleanup *old_chain; | |
3522 | ||
176620f1 | 3523 | search_symbols (regexp, FUNCTIONS_DOMAIN, 0, (char **) NULL, &ss); |
5bd98722 | 3524 | old_chain = make_cleanup_free_search_symbols (ss); |
c906108c SS |
3525 | |
3526 | for (p = ss; p != NULL; p = p->next) | |
3527 | { | |
3528 | if (p->msymbol == NULL) | |
c5aa993b | 3529 | { |
2335f48e DC |
3530 | char *string = alloca (strlen (p->symtab->filename) |
3531 | + strlen (SYMBOL_LINKAGE_NAME (p->symbol)) | |
3532 | + 4); | |
c5aa993b JM |
3533 | strcpy (string, p->symtab->filename); |
3534 | strcat (string, ":'"); | |
2335f48e | 3535 | strcat (string, SYMBOL_LINKAGE_NAME (p->symbol)); |
c5aa993b JM |
3536 | strcat (string, "'"); |
3537 | break_command (string, from_tty); | |
176620f1 | 3538 | print_symbol_info (FUNCTIONS_DOMAIN, |
c5aa993b JM |
3539 | p->symtab, |
3540 | p->symbol, | |
3541 | p->block, | |
3542 | p->symtab->filename); | |
3543 | } | |
c906108c | 3544 | else |
c5aa993b | 3545 | { |
6214f497 DJ |
3546 | char *string = alloca (strlen (SYMBOL_LINKAGE_NAME (p->msymbol)) |
3547 | + 3); | |
3548 | strcpy (string, "'"); | |
3549 | strcat (string, SYMBOL_LINKAGE_NAME (p->msymbol)); | |
3550 | strcat (string, "'"); | |
3551 | ||
3552 | break_command (string, from_tty); | |
c5aa993b | 3553 | printf_filtered ("<function, no debug info> %s;\n", |
de5ad195 | 3554 | SYMBOL_PRINT_NAME (p->msymbol)); |
c5aa993b | 3555 | } |
c906108c SS |
3556 | } |
3557 | ||
3558 | do_cleanups (old_chain); | |
3559 | } | |
c906108c | 3560 | \f |
c5aa993b | 3561 | |
c906108c SS |
3562 | /* Helper routine for make_symbol_completion_list. */ |
3563 | ||
3564 | static int return_val_size; | |
3565 | static int return_val_index; | |
3566 | static char **return_val; | |
3567 | ||
3568 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
c906108c | 3569 | completion_list_add_name \ |
2335f48e | 3570 | (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) |
c906108c SS |
3571 | |
3572 | /* Test to see if the symbol specified by SYMNAME (which is already | |
c5aa993b JM |
3573 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
3574 | characters. If so, add it to the current completion list. */ | |
c906108c SS |
3575 | |
3576 | static void | |
fba45db2 KB |
3577 | completion_list_add_name (char *symname, char *sym_text, int sym_text_len, |
3578 | char *text, char *word) | |
c906108c SS |
3579 | { |
3580 | int newsize; | |
3581 | int i; | |
3582 | ||
3583 | /* clip symbols that cannot match */ | |
3584 | ||
3585 | if (strncmp (symname, sym_text, sym_text_len) != 0) | |
3586 | { | |
3587 | return; | |
3588 | } | |
3589 | ||
c906108c SS |
3590 | /* We have a match for a completion, so add SYMNAME to the current list |
3591 | of matches. Note that the name is moved to freshly malloc'd space. */ | |
3592 | ||
3593 | { | |
3594 | char *new; | |
3595 | if (word == sym_text) | |
3596 | { | |
3597 | new = xmalloc (strlen (symname) + 5); | |
3598 | strcpy (new, symname); | |
3599 | } | |
3600 | else if (word > sym_text) | |
3601 | { | |
3602 | /* Return some portion of symname. */ | |
3603 | new = xmalloc (strlen (symname) + 5); | |
3604 | strcpy (new, symname + (word - sym_text)); | |
3605 | } | |
3606 | else | |
3607 | { | |
3608 | /* Return some of SYM_TEXT plus symname. */ | |
3609 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); | |
3610 | strncpy (new, word, sym_text - word); | |
3611 | new[sym_text - word] = '\0'; | |
3612 | strcat (new, symname); | |
3613 | } | |
3614 | ||
c906108c SS |
3615 | if (return_val_index + 3 > return_val_size) |
3616 | { | |
3617 | newsize = (return_val_size *= 2) * sizeof (char *); | |
3618 | return_val = (char **) xrealloc ((char *) return_val, newsize); | |
3619 | } | |
3620 | return_val[return_val_index++] = new; | |
3621 | return_val[return_val_index] = NULL; | |
3622 | } | |
3623 | } | |
3624 | ||
69636828 AF |
3625 | /* ObjC: In case we are completing on a selector, look as the msymbol |
3626 | again and feed all the selectors into the mill. */ | |
3627 | ||
3628 | static void | |
3629 | completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text, | |
3630 | int sym_text_len, char *text, char *word) | |
3631 | { | |
3632 | static char *tmp = NULL; | |
3633 | static unsigned int tmplen = 0; | |
9af17804 | 3634 | |
69636828 AF |
3635 | char *method, *category, *selector; |
3636 | char *tmp2 = NULL; | |
9af17804 | 3637 | |
69636828 AF |
3638 | method = SYMBOL_NATURAL_NAME (msymbol); |
3639 | ||
3640 | /* Is it a method? */ | |
3641 | if ((method[0] != '-') && (method[0] != '+')) | |
3642 | return; | |
3643 | ||
3644 | if (sym_text[0] == '[') | |
3645 | /* Complete on shortened method method. */ | |
3646 | completion_list_add_name (method + 1, sym_text, sym_text_len, text, word); | |
9af17804 | 3647 | |
69636828 AF |
3648 | while ((strlen (method) + 1) >= tmplen) |
3649 | { | |
3650 | if (tmplen == 0) | |
3651 | tmplen = 1024; | |
3652 | else | |
3653 | tmplen *= 2; | |
3654 | tmp = xrealloc (tmp, tmplen); | |
3655 | } | |
3656 | selector = strchr (method, ' '); | |
3657 | if (selector != NULL) | |
3658 | selector++; | |
9af17804 | 3659 | |
69636828 | 3660 | category = strchr (method, '('); |
9af17804 | 3661 | |
69636828 AF |
3662 | if ((category != NULL) && (selector != NULL)) |
3663 | { | |
3664 | memcpy (tmp, method, (category - method)); | |
3665 | tmp[category - method] = ' '; | |
3666 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
3667 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
3668 | if (sym_text[0] == '[') | |
3669 | completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word); | |
3670 | } | |
9af17804 | 3671 | |
69636828 AF |
3672 | if (selector != NULL) |
3673 | { | |
3674 | /* Complete on selector only. */ | |
3675 | strcpy (tmp, selector); | |
3676 | tmp2 = strchr (tmp, ']'); | |
3677 | if (tmp2 != NULL) | |
3678 | *tmp2 = '\0'; | |
9af17804 | 3679 | |
69636828 AF |
3680 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); |
3681 | } | |
3682 | } | |
3683 | ||
3684 | /* Break the non-quoted text based on the characters which are in | |
3685 | symbols. FIXME: This should probably be language-specific. */ | |
3686 | ||
3687 | static char * | |
3688 | language_search_unquoted_string (char *text, char *p) | |
3689 | { | |
3690 | for (; p > text; --p) | |
3691 | { | |
3692 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
3693 | continue; | |
3694 | else | |
3695 | { | |
3696 | if ((current_language->la_language == language_objc)) | |
3697 | { | |
3698 | if (p[-1] == ':') /* might be part of a method name */ | |
3699 | continue; | |
3700 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
3701 | p -= 2; /* beginning of a method name */ | |
3702 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') | |
3703 | { /* might be part of a method name */ | |
3704 | char *t = p; | |
3705 | ||
3706 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
3707 | that we are in the middle of a method name. However, | |
3708 | finding "-[" or "+[" should be pretty un-ambiguous. | |
3709 | Unfortunately we have to find it now to decide. */ | |
3710 | ||
3711 | while (t > text) | |
3712 | if (isalnum (t[-1]) || t[-1] == '_' || | |
3713 | t[-1] == ' ' || t[-1] == ':' || | |
3714 | t[-1] == '(' || t[-1] == ')') | |
3715 | --t; | |
3716 | else | |
3717 | break; | |
3718 | ||
3719 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
3720 | p = t - 2; /* method name detected */ | |
3721 | /* else we leave with p unchanged */ | |
3722 | } | |
3723 | } | |
3724 | break; | |
3725 | } | |
3726 | } | |
3727 | return p; | |
3728 | } | |
3729 | ||
edb3359d DJ |
3730 | static void |
3731 | completion_list_add_fields (struct symbol *sym, char *sym_text, | |
3732 | int sym_text_len, char *text, char *word) | |
3733 | { | |
3734 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
3735 | { | |
3736 | struct type *t = SYMBOL_TYPE (sym); | |
3737 | enum type_code c = TYPE_CODE (t); | |
3738 | int j; | |
3739 | ||
3740 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
3741 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
3742 | if (TYPE_FIELD_NAME (t, j)) | |
3743 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
3744 | sym_text, sym_text_len, text, word); | |
3745 | } | |
3746 | } | |
3747 | ||
9a044a89 TT |
3748 | /* Type of the user_data argument passed to add_macro_name. The |
3749 | contents are simply whatever is needed by | |
3750 | completion_list_add_name. */ | |
3751 | struct add_macro_name_data | |
3752 | { | |
3753 | char *sym_text; | |
3754 | int sym_text_len; | |
3755 | char *text; | |
3756 | char *word; | |
3757 | }; | |
3758 | ||
3759 | /* A callback used with macro_for_each and macro_for_each_in_scope. | |
3760 | This adds a macro's name to the current completion list. */ | |
3761 | static void | |
3762 | add_macro_name (const char *name, const struct macro_definition *ignore, | |
3763 | void *user_data) | |
3764 | { | |
3765 | struct add_macro_name_data *datum = (struct add_macro_name_data *) user_data; | |
3766 | completion_list_add_name ((char *) name, | |
3767 | datum->sym_text, datum->sym_text_len, | |
3768 | datum->text, datum->word); | |
3769 | } | |
3770 | ||
c906108c | 3771 | char ** |
41d27058 | 3772 | default_make_symbol_completion_list (char *text, char *word) |
c906108c | 3773 | { |
41d27058 JB |
3774 | /* Problem: All of the symbols have to be copied because readline |
3775 | frees them. I'm not going to worry about this; hopefully there | |
3776 | won't be that many. */ | |
3777 | ||
de4f826b DC |
3778 | struct symbol *sym; |
3779 | struct symtab *s; | |
3780 | struct partial_symtab *ps; | |
3781 | struct minimal_symbol *msymbol; | |
3782 | struct objfile *objfile; | |
edb3359d DJ |
3783 | struct block *b; |
3784 | const struct block *surrounding_static_block, *surrounding_global_block; | |
de4f826b | 3785 | struct dict_iterator iter; |
c906108c SS |
3786 | struct partial_symbol **psym; |
3787 | /* The symbol we are completing on. Points in same buffer as text. */ | |
3788 | char *sym_text; | |
3789 | /* Length of sym_text. */ | |
3790 | int sym_text_len; | |
3791 | ||
41d27058 | 3792 | /* Now look for the symbol we are supposed to complete on. */ |
c906108c SS |
3793 | { |
3794 | char *p; | |
3795 | char quote_found; | |
3796 | char *quote_pos = NULL; | |
3797 | ||
3798 | /* First see if this is a quoted string. */ | |
3799 | quote_found = '\0'; | |
3800 | for (p = text; *p != '\0'; ++p) | |
3801 | { | |
3802 | if (quote_found != '\0') | |
3803 | { | |
3804 | if (*p == quote_found) | |
3805 | /* Found close quote. */ | |
3806 | quote_found = '\0'; | |
3807 | else if (*p == '\\' && p[1] == quote_found) | |
3808 | /* A backslash followed by the quote character | |
c5aa993b | 3809 | doesn't end the string. */ |
c906108c SS |
3810 | ++p; |
3811 | } | |
3812 | else if (*p == '\'' || *p == '"') | |
3813 | { | |
3814 | quote_found = *p; | |
3815 | quote_pos = p; | |
3816 | } | |
3817 | } | |
3818 | if (quote_found == '\'') | |
3819 | /* A string within single quotes can be a symbol, so complete on it. */ | |
3820 | sym_text = quote_pos + 1; | |
3821 | else if (quote_found == '"') | |
3822 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 3823 | to complete it any other way. */ |
c94fdfd0 EZ |
3824 | { |
3825 | return_val = (char **) xmalloc (sizeof (char *)); | |
3826 | return_val[0] = NULL; | |
3827 | return return_val; | |
3828 | } | |
c906108c SS |
3829 | else |
3830 | { | |
3831 | /* It is not a quoted string. Break it based on the characters | |
3832 | which are in symbols. */ | |
3833 | while (p > text) | |
3834 | { | |
3835 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
3836 | --p; | |
3837 | else | |
3838 | break; | |
3839 | } | |
3840 | sym_text = p; | |
3841 | } | |
3842 | } | |
3843 | ||
3844 | sym_text_len = strlen (sym_text); | |
3845 | ||
3846 | return_val_size = 100; | |
3847 | return_val_index = 0; | |
3848 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
3849 | return_val[0] = NULL; | |
3850 | ||
3851 | /* Look through the partial symtabs for all symbols which begin | |
3852 | by matching SYM_TEXT. Add each one that you find to the list. */ | |
3853 | ||
3854 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
3855 | { |
3856 | /* If the psymtab's been read in we'll get it when we search | |
3857 | through the blockvector. */ | |
3858 | if (ps->readin) | |
3859 | continue; | |
3860 | ||
3861 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
3862 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
3863 | + ps->n_global_syms); | |
3864 | psym++) | |
3865 | { | |
3866 | /* If interrupted, then quit. */ | |
3867 | QUIT; | |
3868 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); | |
3869 | } | |
3870 | ||
3871 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
3872 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
3873 | + ps->n_static_syms); | |
3874 | psym++) | |
3875 | { | |
3876 | QUIT; | |
3877 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); | |
3878 | } | |
3879 | } | |
c906108c SS |
3880 | |
3881 | /* At this point scan through the misc symbol vectors and add each | |
3882 | symbol you find to the list. Eventually we want to ignore | |
3883 | anything that isn't a text symbol (everything else will be | |
3884 | handled by the psymtab code above). */ | |
3885 | ||
3886 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3887 | { |
3888 | QUIT; | |
3889 | COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); | |
9af17804 | 3890 | |
69636828 | 3891 | completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word); |
c5aa993b | 3892 | } |
c906108c SS |
3893 | |
3894 | /* Search upwards from currently selected frame (so that we can | |
edb3359d DJ |
3895 | complete on local vars). Also catch fields of types defined in |
3896 | this places which match our text string. Only complete on types | |
3897 | visible from current context. */ | |
3898 | ||
3899 | b = get_selected_block (0); | |
3900 | surrounding_static_block = block_static_block (b); | |
3901 | surrounding_global_block = block_global_block (b); | |
3902 | if (surrounding_static_block != NULL) | |
3903 | while (b != surrounding_static_block) | |
3904 | { | |
3905 | QUIT; | |
c906108c | 3906 | |
edb3359d DJ |
3907 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
3908 | { | |
3909 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
3910 | word); | |
3911 | completion_list_add_fields (sym, sym_text, sym_text_len, text, | |
3912 | word); | |
3913 | } | |
c5aa993b | 3914 | |
edb3359d DJ |
3915 | /* Stop when we encounter an enclosing function. Do not stop for |
3916 | non-inlined functions - the locals of the enclosing function | |
3917 | are in scope for a nested function. */ | |
3918 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3919 | break; | |
3920 | b = BLOCK_SUPERBLOCK (b); | |
3921 | } | |
c906108c | 3922 | |
edb3359d | 3923 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 3924 | |
edb3359d DJ |
3925 | if (surrounding_static_block != NULL) |
3926 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
3927 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
3928 | ||
3929 | if (surrounding_global_block != NULL) | |
3930 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
3931 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
c906108c SS |
3932 | |
3933 | /* Go through the symtabs and check the externs and statics for | |
3934 | symbols which match. */ | |
3935 | ||
11309657 | 3936 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3937 | { |
3938 | QUIT; | |
3939 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 3940 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3941 | { |
c5aa993b JM |
3942 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3943 | } | |
3944 | } | |
c906108c | 3945 | |
11309657 | 3946 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3947 | { |
3948 | QUIT; | |
3949 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 3950 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3951 | { |
c5aa993b JM |
3952 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3953 | } | |
3954 | } | |
c906108c | 3955 | |
9a044a89 TT |
3956 | if (current_language->la_macro_expansion == macro_expansion_c) |
3957 | { | |
3958 | struct macro_scope *scope; | |
3959 | struct add_macro_name_data datum; | |
3960 | ||
3961 | datum.sym_text = sym_text; | |
3962 | datum.sym_text_len = sym_text_len; | |
3963 | datum.text = text; | |
3964 | datum.word = word; | |
3965 | ||
3966 | /* Add any macros visible in the default scope. Note that this | |
3967 | may yield the occasional wrong result, because an expression | |
3968 | might be evaluated in a scope other than the default. For | |
3969 | example, if the user types "break file:line if <TAB>", the | |
3970 | resulting expression will be evaluated at "file:line" -- but | |
3971 | at there does not seem to be a way to detect this at | |
3972 | completion time. */ | |
3973 | scope = default_macro_scope (); | |
3974 | if (scope) | |
3975 | { | |
3976 | macro_for_each_in_scope (scope->file, scope->line, | |
3977 | add_macro_name, &datum); | |
3978 | xfree (scope); | |
3979 | } | |
3980 | ||
3981 | /* User-defined macros are always visible. */ | |
3982 | macro_for_each (macro_user_macros, add_macro_name, &datum); | |
3983 | } | |
3984 | ||
c906108c SS |
3985 | return (return_val); |
3986 | } | |
3987 | ||
41d27058 JB |
3988 | /* Return a NULL terminated array of all symbols (regardless of class) |
3989 | which begin by matching TEXT. If the answer is no symbols, then | |
3990 | the return value is an array which contains only a NULL pointer. */ | |
3991 | ||
3992 | char ** | |
3993 | make_symbol_completion_list (char *text, char *word) | |
3994 | { | |
3995 | return current_language->la_make_symbol_completion_list (text, word); | |
3996 | } | |
3997 | ||
d8906c6f TJB |
3998 | /* Like make_symbol_completion_list, but suitable for use as a |
3999 | completion function. */ | |
4000 | ||
4001 | char ** | |
4002 | make_symbol_completion_list_fn (struct cmd_list_element *ignore, | |
4003 | char *text, char *word) | |
4004 | { | |
4005 | return make_symbol_completion_list (text, word); | |
4006 | } | |
4007 | ||
c94fdfd0 EZ |
4008 | /* Like make_symbol_completion_list, but returns a list of symbols |
4009 | defined in a source file FILE. */ | |
4010 | ||
4011 | char ** | |
4012 | make_file_symbol_completion_list (char *text, char *word, char *srcfile) | |
4013 | { | |
52f0bd74 AC |
4014 | struct symbol *sym; |
4015 | struct symtab *s; | |
4016 | struct block *b; | |
de4f826b | 4017 | struct dict_iterator iter; |
c94fdfd0 EZ |
4018 | /* The symbol we are completing on. Points in same buffer as text. */ |
4019 | char *sym_text; | |
4020 | /* Length of sym_text. */ | |
4021 | int sym_text_len; | |
4022 | ||
4023 | /* Now look for the symbol we are supposed to complete on. | |
4024 | FIXME: This should be language-specific. */ | |
4025 | { | |
4026 | char *p; | |
4027 | char quote_found; | |
4028 | char *quote_pos = NULL; | |
4029 | ||
4030 | /* First see if this is a quoted string. */ | |
4031 | quote_found = '\0'; | |
4032 | for (p = text; *p != '\0'; ++p) | |
4033 | { | |
4034 | if (quote_found != '\0') | |
4035 | { | |
4036 | if (*p == quote_found) | |
4037 | /* Found close quote. */ | |
4038 | quote_found = '\0'; | |
4039 | else if (*p == '\\' && p[1] == quote_found) | |
4040 | /* A backslash followed by the quote character | |
4041 | doesn't end the string. */ | |
4042 | ++p; | |
4043 | } | |
4044 | else if (*p == '\'' || *p == '"') | |
4045 | { | |
4046 | quote_found = *p; | |
4047 | quote_pos = p; | |
4048 | } | |
4049 | } | |
4050 | if (quote_found == '\'') | |
4051 | /* A string within single quotes can be a symbol, so complete on it. */ | |
4052 | sym_text = quote_pos + 1; | |
4053 | else if (quote_found == '"') | |
4054 | /* A double-quoted string is never a symbol, nor does it make sense | |
4055 | to complete it any other way. */ | |
4056 | { | |
4057 | return_val = (char **) xmalloc (sizeof (char *)); | |
4058 | return_val[0] = NULL; | |
4059 | return return_val; | |
4060 | } | |
4061 | else | |
4062 | { | |
69636828 AF |
4063 | /* Not a quoted string. */ |
4064 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
4065 | } |
4066 | } | |
4067 | ||
4068 | sym_text_len = strlen (sym_text); | |
4069 | ||
4070 | return_val_size = 10; | |
4071 | return_val_index = 0; | |
4072 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
4073 | return_val[0] = NULL; | |
4074 | ||
4075 | /* Find the symtab for SRCFILE (this loads it if it was not yet read | |
4076 | in). */ | |
4077 | s = lookup_symtab (srcfile); | |
4078 | if (s == NULL) | |
4079 | { | |
4080 | /* Maybe they typed the file with leading directories, while the | |
4081 | symbol tables record only its basename. */ | |
31889e00 | 4082 | const char *tail = lbasename (srcfile); |
c94fdfd0 EZ |
4083 | |
4084 | if (tail > srcfile) | |
4085 | s = lookup_symtab (tail); | |
4086 | } | |
4087 | ||
4088 | /* If we have no symtab for that file, return an empty list. */ | |
4089 | if (s == NULL) | |
4090 | return (return_val); | |
4091 | ||
4092 | /* Go through this symtab and check the externs and statics for | |
4093 | symbols which match. */ | |
4094 | ||
4095 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 4096 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 4097 | { |
c94fdfd0 EZ |
4098 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4099 | } | |
4100 | ||
4101 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 4102 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 4103 | { |
c94fdfd0 EZ |
4104 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
4105 | } | |
4106 | ||
4107 | return (return_val); | |
4108 | } | |
4109 | ||
4110 | /* A helper function for make_source_files_completion_list. It adds | |
4111 | another file name to a list of possible completions, growing the | |
4112 | list as necessary. */ | |
4113 | ||
4114 | static void | |
4115 | add_filename_to_list (const char *fname, char *text, char *word, | |
4116 | char ***list, int *list_used, int *list_alloced) | |
4117 | { | |
4118 | char *new; | |
4119 | size_t fnlen = strlen (fname); | |
4120 | ||
4121 | if (*list_used + 1 >= *list_alloced) | |
4122 | { | |
4123 | *list_alloced *= 2; | |
4124 | *list = (char **) xrealloc ((char *) *list, | |
4125 | *list_alloced * sizeof (char *)); | |
4126 | } | |
4127 | ||
4128 | if (word == text) | |
4129 | { | |
4130 | /* Return exactly fname. */ | |
4131 | new = xmalloc (fnlen + 5); | |
4132 | strcpy (new, fname); | |
4133 | } | |
4134 | else if (word > text) | |
4135 | { | |
4136 | /* Return some portion of fname. */ | |
4137 | new = xmalloc (fnlen + 5); | |
4138 | strcpy (new, fname + (word - text)); | |
4139 | } | |
4140 | else | |
4141 | { | |
4142 | /* Return some of TEXT plus fname. */ | |
4143 | new = xmalloc (fnlen + (text - word) + 5); | |
4144 | strncpy (new, word, text - word); | |
4145 | new[text - word] = '\0'; | |
4146 | strcat (new, fname); | |
4147 | } | |
4148 | (*list)[*list_used] = new; | |
4149 | (*list)[++*list_used] = NULL; | |
4150 | } | |
4151 | ||
4152 | static int | |
4153 | not_interesting_fname (const char *fname) | |
4154 | { | |
4155 | static const char *illegal_aliens[] = { | |
4156 | "_globals_", /* inserted by coff_symtab_read */ | |
4157 | NULL | |
4158 | }; | |
4159 | int i; | |
4160 | ||
4161 | for (i = 0; illegal_aliens[i]; i++) | |
4162 | { | |
4163 | if (strcmp (fname, illegal_aliens[i]) == 0) | |
4164 | return 1; | |
4165 | } | |
4166 | return 0; | |
4167 | } | |
4168 | ||
4169 | /* Return a NULL terminated array of all source files whose names | |
4170 | begin with matching TEXT. The file names are looked up in the | |
4171 | symbol tables of this program. If the answer is no matchess, then | |
4172 | the return value is an array which contains only a NULL pointer. */ | |
4173 | ||
4174 | char ** | |
4175 | make_source_files_completion_list (char *text, char *word) | |
4176 | { | |
52f0bd74 AC |
4177 | struct symtab *s; |
4178 | struct partial_symtab *ps; | |
4179 | struct objfile *objfile; | |
c94fdfd0 EZ |
4180 | int first = 1; |
4181 | int list_alloced = 1; | |
4182 | int list_used = 0; | |
4183 | size_t text_len = strlen (text); | |
4184 | char **list = (char **) xmalloc (list_alloced * sizeof (char *)); | |
31889e00 | 4185 | const char *base_name; |
c94fdfd0 EZ |
4186 | |
4187 | list[0] = NULL; | |
4188 | ||
4189 | if (!have_full_symbols () && !have_partial_symbols ()) | |
4190 | return list; | |
4191 | ||
4192 | ALL_SYMTABS (objfile, s) | |
4193 | { | |
4194 | if (not_interesting_fname (s->filename)) | |
4195 | continue; | |
4196 | if (!filename_seen (s->filename, 1, &first) | |
4197 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4198 | && strncasecmp (s->filename, text, text_len) == 0 | |
4199 | #else | |
4200 | && strncmp (s->filename, text, text_len) == 0 | |
4201 | #endif | |
4202 | ) | |
4203 | { | |
4204 | /* This file matches for a completion; add it to the current | |
4205 | list of matches. */ | |
4206 | add_filename_to_list (s->filename, text, word, | |
4207 | &list, &list_used, &list_alloced); | |
4208 | } | |
4209 | else | |
4210 | { | |
4211 | /* NOTE: We allow the user to type a base name when the | |
4212 | debug info records leading directories, but not the other | |
4213 | way around. This is what subroutines of breakpoint | |
4214 | command do when they parse file names. */ | |
31889e00 | 4215 | base_name = lbasename (s->filename); |
c94fdfd0 EZ |
4216 | if (base_name != s->filename |
4217 | && !filename_seen (base_name, 1, &first) | |
4218 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4219 | && strncasecmp (base_name, text, text_len) == 0 | |
4220 | #else | |
4221 | && strncmp (base_name, text, text_len) == 0 | |
4222 | #endif | |
4223 | ) | |
4224 | add_filename_to_list (base_name, text, word, | |
4225 | &list, &list_used, &list_alloced); | |
4226 | } | |
4227 | } | |
4228 | ||
4229 | ALL_PSYMTABS (objfile, ps) | |
4230 | { | |
4231 | if (not_interesting_fname (ps->filename)) | |
4232 | continue; | |
4233 | if (!ps->readin) | |
4234 | { | |
4235 | if (!filename_seen (ps->filename, 1, &first) | |
4236 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4237 | && strncasecmp (ps->filename, text, text_len) == 0 | |
4238 | #else | |
4239 | && strncmp (ps->filename, text, text_len) == 0 | |
4240 | #endif | |
4241 | ) | |
4242 | { | |
4243 | /* This file matches for a completion; add it to the | |
4244 | current list of matches. */ | |
4245 | add_filename_to_list (ps->filename, text, word, | |
4246 | &list, &list_used, &list_alloced); | |
4247 | ||
4248 | } | |
4249 | else | |
4250 | { | |
31889e00 | 4251 | base_name = lbasename (ps->filename); |
c94fdfd0 EZ |
4252 | if (base_name != ps->filename |
4253 | && !filename_seen (base_name, 1, &first) | |
4254 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4255 | && strncasecmp (base_name, text, text_len) == 0 | |
4256 | #else | |
4257 | && strncmp (base_name, text, text_len) == 0 | |
4258 | #endif | |
4259 | ) | |
4260 | add_filename_to_list (base_name, text, word, | |
4261 | &list, &list_used, &list_alloced); | |
4262 | } | |
4263 | } | |
4264 | } | |
4265 | ||
4266 | return list; | |
4267 | } | |
4268 | ||
c906108c SS |
4269 | /* Determine if PC is in the prologue of a function. The prologue is the area |
4270 | between the first instruction of a function, and the first executable line. | |
4271 | Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. | |
4272 | ||
4273 | If non-zero, func_start is where we think the prologue starts, possibly | |
4274 | by previous examination of symbol table information. | |
4275 | */ | |
4276 | ||
4277 | int | |
d80b854b | 4278 | in_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR func_start) |
c906108c SS |
4279 | { |
4280 | struct symtab_and_line sal; | |
4281 | CORE_ADDR func_addr, func_end; | |
4282 | ||
54cf9c03 EZ |
4283 | /* We have several sources of information we can consult to figure |
4284 | this out. | |
4285 | - Compilers usually emit line number info that marks the prologue | |
4286 | as its own "source line". So the ending address of that "line" | |
4287 | is the end of the prologue. If available, this is the most | |
4288 | reliable method. | |
4289 | - The minimal symbols and partial symbols, which can usually tell | |
4290 | us the starting and ending addresses of a function. | |
4291 | - If we know the function's start address, we can call the | |
a433963d | 4292 | architecture-defined gdbarch_skip_prologue function to analyze the |
54cf9c03 EZ |
4293 | instruction stream and guess where the prologue ends. |
4294 | - Our `func_start' argument; if non-zero, this is the caller's | |
4295 | best guess as to the function's entry point. At the time of | |
4296 | this writing, handle_inferior_event doesn't get this right, so | |
4297 | it should be our last resort. */ | |
4298 | ||
4299 | /* Consult the partial symbol table, to find which function | |
4300 | the PC is in. */ | |
4301 | if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
4302 | { | |
4303 | CORE_ADDR prologue_end; | |
c906108c | 4304 | |
54cf9c03 EZ |
4305 | /* We don't even have minsym information, so fall back to using |
4306 | func_start, if given. */ | |
4307 | if (! func_start) | |
4308 | return 1; /* We *might* be in a prologue. */ | |
c906108c | 4309 | |
d80b854b | 4310 | prologue_end = gdbarch_skip_prologue (gdbarch, func_start); |
c906108c | 4311 | |
54cf9c03 EZ |
4312 | return func_start <= pc && pc < prologue_end; |
4313 | } | |
c906108c | 4314 | |
54cf9c03 EZ |
4315 | /* If we have line number information for the function, that's |
4316 | usually pretty reliable. */ | |
4317 | sal = find_pc_line (func_addr, 0); | |
c906108c | 4318 | |
54cf9c03 EZ |
4319 | /* Now sal describes the source line at the function's entry point, |
4320 | which (by convention) is the prologue. The end of that "line", | |
4321 | sal.end, is the end of the prologue. | |
4322 | ||
4323 | Note that, for functions whose source code is all on a single | |
4324 | line, the line number information doesn't always end up this way. | |
4325 | So we must verify that our purported end-of-prologue address is | |
4326 | *within* the function, not at its start or end. */ | |
4327 | if (sal.line == 0 | |
4328 | || sal.end <= func_addr | |
4329 | || func_end <= sal.end) | |
4330 | { | |
4331 | /* We don't have any good line number info, so use the minsym | |
4332 | information, together with the architecture-specific prologue | |
4333 | scanning code. */ | |
d80b854b | 4334 | CORE_ADDR prologue_end = gdbarch_skip_prologue (gdbarch, func_addr); |
c906108c | 4335 | |
54cf9c03 EZ |
4336 | return func_addr <= pc && pc < prologue_end; |
4337 | } | |
c906108c | 4338 | |
54cf9c03 EZ |
4339 | /* We have line number info, and it looks good. */ |
4340 | return func_addr <= pc && pc < sal.end; | |
c906108c SS |
4341 | } |
4342 | ||
634aa483 AC |
4343 | /* Given PC at the function's start address, attempt to find the |
4344 | prologue end using SAL information. Return zero if the skip fails. | |
4345 | ||
4346 | A non-optimized prologue traditionally has one SAL for the function | |
4347 | and a second for the function body. A single line function has | |
4348 | them both pointing at the same line. | |
4349 | ||
4350 | An optimized prologue is similar but the prologue may contain | |
4351 | instructions (SALs) from the instruction body. Need to skip those | |
4352 | while not getting into the function body. | |
4353 | ||
4354 | The functions end point and an increasing SAL line are used as | |
4355 | indicators of the prologue's endpoint. | |
4356 | ||
4357 | This code is based on the function refine_prologue_limit (versions | |
4358 | found in both ia64 and ppc). */ | |
4359 | ||
4360 | CORE_ADDR | |
d80b854b | 4361 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) |
634aa483 AC |
4362 | { |
4363 | struct symtab_and_line prologue_sal; | |
4364 | CORE_ADDR start_pc; | |
4365 | CORE_ADDR end_pc; | |
d54be744 | 4366 | struct block *bl; |
634aa483 AC |
4367 | |
4368 | /* Get an initial range for the function. */ | |
4369 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
d80b854b | 4370 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); |
634aa483 AC |
4371 | |
4372 | prologue_sal = find_pc_line (start_pc, 0); | |
4373 | if (prologue_sal.line != 0) | |
4374 | { | |
d54be744 DJ |
4375 | /* For langauges other than assembly, treat two consecutive line |
4376 | entries at the same address as a zero-instruction prologue. | |
4377 | The GNU assembler emits separate line notes for each instruction | |
4378 | in a multi-instruction macro, but compilers generally will not | |
4379 | do this. */ | |
4380 | if (prologue_sal.symtab->language != language_asm) | |
4381 | { | |
4382 | struct linetable *linetable = LINETABLE (prologue_sal.symtab); | |
4383 | int exact; | |
4384 | int idx = 0; | |
4385 | ||
4386 | /* Skip any earlier lines, and any end-of-sequence marker | |
4387 | from a previous function. */ | |
4388 | while (linetable->item[idx].pc != prologue_sal.pc | |
4389 | || linetable->item[idx].line == 0) | |
4390 | idx++; | |
4391 | ||
4392 | if (idx+1 < linetable->nitems | |
4393 | && linetable->item[idx+1].line != 0 | |
4394 | && linetable->item[idx+1].pc == start_pc) | |
4395 | return start_pc; | |
4396 | } | |
4397 | ||
576c2025 FF |
4398 | /* If there is only one sal that covers the entire function, |
4399 | then it is probably a single line function, like | |
4400 | "foo(){}". */ | |
91934273 | 4401 | if (prologue_sal.end >= end_pc) |
4e463ff5 | 4402 | return 0; |
d54be744 | 4403 | |
634aa483 AC |
4404 | while (prologue_sal.end < end_pc) |
4405 | { | |
4406 | struct symtab_and_line sal; | |
4407 | ||
4408 | sal = find_pc_line (prologue_sal.end, 0); | |
4409 | if (sal.line == 0) | |
4410 | break; | |
4411 | /* Assume that a consecutive SAL for the same (or larger) | |
4412 | line mark the prologue -> body transition. */ | |
4413 | if (sal.line >= prologue_sal.line) | |
4414 | break; | |
edb3359d DJ |
4415 | |
4416 | /* The line number is smaller. Check that it's from the | |
4417 | same function, not something inlined. If it's inlined, | |
4418 | then there is no point comparing the line numbers. */ | |
4419 | bl = block_for_pc (prologue_sal.end); | |
4420 | while (bl) | |
4421 | { | |
4422 | if (block_inlined_p (bl)) | |
4423 | break; | |
4424 | if (BLOCK_FUNCTION (bl)) | |
4425 | { | |
4426 | bl = NULL; | |
4427 | break; | |
4428 | } | |
4429 | bl = BLOCK_SUPERBLOCK (bl); | |
4430 | } | |
4431 | if (bl != NULL) | |
4432 | break; | |
4433 | ||
634aa483 AC |
4434 | /* The case in which compiler's optimizer/scheduler has |
4435 | moved instructions into the prologue. We look ahead in | |
4436 | the function looking for address ranges whose | |
4437 | corresponding line number is less the first one that we | |
4438 | found for the function. This is more conservative then | |
4439 | refine_prologue_limit which scans a large number of SALs | |
4440 | looking for any in the prologue */ | |
4441 | prologue_sal = sal; | |
4442 | } | |
4443 | } | |
d54be744 DJ |
4444 | |
4445 | if (prologue_sal.end < end_pc) | |
4446 | /* Return the end of this line, or zero if we could not find a | |
4447 | line. */ | |
4448 | return prologue_sal.end; | |
4449 | else | |
4450 | /* Don't return END_PC, which is past the end of the function. */ | |
4451 | return prologue_sal.pc; | |
634aa483 | 4452 | } |
c906108c | 4453 | \f |
50641945 FN |
4454 | struct symtabs_and_lines |
4455 | decode_line_spec (char *string, int funfirstline) | |
4456 | { | |
4457 | struct symtabs_and_lines sals; | |
0378c332 | 4458 | struct symtab_and_line cursal; |
9af17804 | 4459 | |
50641945 | 4460 | if (string == 0) |
8a3fe4f8 | 4461 | error (_("Empty line specification.")); |
9af17804 | 4462 | |
0378c332 | 4463 | /* We use whatever is set as the current source line. We do not try |
9af17804 | 4464 | and get a default or it will recursively call us! */ |
0378c332 | 4465 | cursal = get_current_source_symtab_and_line (); |
9af17804 | 4466 | |
50641945 | 4467 | sals = decode_line_1 (&string, funfirstline, |
0378c332 | 4468 | cursal.symtab, cursal.line, |
bffe1ece | 4469 | (char ***) NULL, NULL); |
0378c332 | 4470 | |
50641945 | 4471 | if (*string) |
8a3fe4f8 | 4472 | error (_("Junk at end of line specification: %s"), string); |
50641945 FN |
4473 | return sals; |
4474 | } | |
c5aa993b | 4475 | |
51cc5b07 AC |
4476 | /* Track MAIN */ |
4477 | static char *name_of_main; | |
4478 | ||
4479 | void | |
4480 | set_main_name (const char *name) | |
4481 | { | |
4482 | if (name_of_main != NULL) | |
4483 | { | |
4484 | xfree (name_of_main); | |
4485 | name_of_main = NULL; | |
4486 | } | |
4487 | if (name != NULL) | |
4488 | { | |
4489 | name_of_main = xstrdup (name); | |
4490 | } | |
4491 | } | |
4492 | ||
ea53e89f JB |
4493 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
4494 | accordingly. */ | |
4495 | ||
4496 | static void | |
4497 | find_main_name (void) | |
4498 | { | |
cd6c7346 | 4499 | const char *new_main_name; |
ea53e89f JB |
4500 | |
4501 | /* Try to see if the main procedure is in Ada. */ | |
4502 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
4503 | be to add a new method in the language vector, and call this | |
4504 | method for each language until one of them returns a non-empty | |
4505 | name. This would allow us to remove this hard-coded call to | |
4506 | an Ada function. It is not clear that this is a better approach | |
4507 | at this point, because all methods need to be written in a way | |
4508 | such that false positives never be returned. For instance, it is | |
4509 | important that a method does not return a wrong name for the main | |
4510 | procedure if the main procedure is actually written in a different | |
4511 | language. It is easy to guaranty this with Ada, since we use a | |
4512 | special symbol generated only when the main in Ada to find the name | |
4513 | of the main procedure. It is difficult however to see how this can | |
4514 | be guarantied for languages such as C, for instance. This suggests | |
4515 | that order of call for these methods becomes important, which means | |
4516 | a more complicated approach. */ | |
4517 | new_main_name = ada_main_name (); | |
4518 | if (new_main_name != NULL) | |
9af17804 | 4519 | { |
ea53e89f JB |
4520 | set_main_name (new_main_name); |
4521 | return; | |
4522 | } | |
4523 | ||
cd6c7346 PM |
4524 | new_main_name = pascal_main_name (); |
4525 | if (new_main_name != NULL) | |
9af17804 | 4526 | { |
cd6c7346 PM |
4527 | set_main_name (new_main_name); |
4528 | return; | |
4529 | } | |
4530 | ||
ea53e89f JB |
4531 | /* The languages above didn't identify the name of the main procedure. |
4532 | Fallback to "main". */ | |
4533 | set_main_name ("main"); | |
4534 | } | |
4535 | ||
51cc5b07 AC |
4536 | char * |
4537 | main_name (void) | |
4538 | { | |
ea53e89f JB |
4539 | if (name_of_main == NULL) |
4540 | find_main_name (); | |
4541 | ||
4542 | return name_of_main; | |
51cc5b07 AC |
4543 | } |
4544 | ||
ea53e89f JB |
4545 | /* Handle ``executable_changed'' events for the symtab module. */ |
4546 | ||
4547 | static void | |
781b42b0 | 4548 | symtab_observer_executable_changed (void) |
ea53e89f JB |
4549 | { |
4550 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
4551 | set_main_name (NULL); | |
4552 | } | |
51cc5b07 | 4553 | |
ed0616c6 VP |
4554 | /* Helper to expand_line_sal below. Appends new sal to SAL, |
4555 | initializing it from SYMTAB, LINENO and PC. */ | |
4556 | static void | |
4557 | append_expanded_sal (struct symtabs_and_lines *sal, | |
4558 | struct symtab *symtab, | |
4559 | int lineno, CORE_ADDR pc) | |
4560 | { | |
9af17804 DE |
4561 | sal->sals = xrealloc (sal->sals, |
4562 | sizeof (sal->sals[0]) | |
ed0616c6 VP |
4563 | * (sal->nelts + 1)); |
4564 | init_sal (sal->sals + sal->nelts); | |
4565 | sal->sals[sal->nelts].symtab = symtab; | |
4566 | sal->sals[sal->nelts].section = NULL; | |
4567 | sal->sals[sal->nelts].end = 0; | |
9af17804 | 4568 | sal->sals[sal->nelts].line = lineno; |
ed0616c6 | 4569 | sal->sals[sal->nelts].pc = pc; |
9af17804 | 4570 | ++sal->nelts; |
ed0616c6 VP |
4571 | } |
4572 | ||
aad80b26 JG |
4573 | /* Helper to expand_line_sal below. Search in the symtabs for any |
4574 | linetable entry that exactly matches FILENAME and LINENO and append | |
4575 | them to RET. If there is at least one match, return 1; otherwise, | |
4576 | return 0, and return the best choice in BEST_ITEM and BEST_SYMTAB. */ | |
4577 | ||
4578 | static int | |
4579 | append_exact_match_to_sals (char *filename, int lineno, | |
4580 | struct symtabs_and_lines *ret, | |
4581 | struct linetable_entry **best_item, | |
4582 | struct symtab **best_symtab) | |
4583 | { | |
4584 | struct objfile *objfile; | |
4585 | struct symtab *symtab; | |
4586 | int exact = 0; | |
4587 | int j; | |
4588 | *best_item = 0; | |
4589 | *best_symtab = 0; | |
4590 | ||
4591 | ALL_SYMTABS (objfile, symtab) | |
4592 | { | |
4593 | if (strcmp (filename, symtab->filename) == 0) | |
4594 | { | |
4595 | struct linetable *l; | |
4596 | int len; | |
4597 | l = LINETABLE (symtab); | |
4598 | if (!l) | |
4599 | continue; | |
4600 | len = l->nitems; | |
4601 | ||
4602 | for (j = 0; j < len; j++) | |
4603 | { | |
4604 | struct linetable_entry *item = &(l->item[j]); | |
4605 | ||
4606 | if (item->line == lineno) | |
4607 | { | |
4608 | exact = 1; | |
4609 | append_expanded_sal (ret, symtab, lineno, item->pc); | |
4610 | } | |
4611 | else if (!exact && item->line > lineno | |
4612 | && (*best_item == NULL | |
4613 | || item->line < (*best_item)->line)) | |
4614 | { | |
4615 | *best_item = item; | |
4616 | *best_symtab = symtab; | |
4617 | } | |
4618 | } | |
4619 | } | |
4620 | } | |
4621 | return exact; | |
4622 | } | |
4623 | ||
ed0616c6 VP |
4624 | /* Compute a set of all sals in |
4625 | the entire program that correspond to same file | |
4626 | and line as SAL and return those. If there | |
4627 | are several sals that belong to the same block, | |
4628 | only one sal for the block is included in results. */ | |
9af17804 | 4629 | |
ed0616c6 VP |
4630 | struct symtabs_and_lines |
4631 | expand_line_sal (struct symtab_and_line sal) | |
4632 | { | |
4633 | struct symtabs_and_lines ret, this_line; | |
4634 | int i, j; | |
4635 | struct objfile *objfile; | |
4636 | struct partial_symtab *psymtab; | |
4637 | struct symtab *symtab; | |
4638 | int lineno; | |
4639 | int deleted = 0; | |
4640 | struct block **blocks = NULL; | |
4641 | int *filter; | |
4642 | ||
4643 | ret.nelts = 0; | |
4644 | ret.sals = NULL; | |
4645 | ||
4646 | if (sal.symtab == NULL || sal.line == 0 || sal.pc != 0) | |
4647 | { | |
4648 | ret.sals = xmalloc (sizeof (struct symtab_and_line)); | |
4649 | ret.sals[0] = sal; | |
4650 | ret.nelts = 1; | |
4651 | return ret; | |
4652 | } | |
4653 | else | |
4654 | { | |
4655 | struct linetable_entry *best_item = 0; | |
4656 | struct symtab *best_symtab = 0; | |
4657 | int exact = 0; | |
4658 | ||
4659 | lineno = sal.line; | |
4660 | ||
9af17804 DE |
4661 | /* We need to find all symtabs for a file which name |
4662 | is described by sal. We cannot just directly | |
ed0616c6 | 4663 | iterate over symtabs, since a symtab might not be |
9af17804 | 4664 | yet created. We also cannot iterate over psymtabs, |
ed0616c6 VP |
4665 | calling PSYMTAB_TO_SYMTAB and working on that symtab, |
4666 | since PSYMTAB_TO_SYMTAB will return NULL for psymtab | |
9af17804 | 4667 | corresponding to an included file. Therefore, we do |
ed0616c6 VP |
4668 | first pass over psymtabs, reading in those with |
4669 | the right name. Then, we iterate over symtabs, knowing | |
4670 | that all symtabs we're interested in are loaded. */ | |
4671 | ||
4672 | ALL_PSYMTABS (objfile, psymtab) | |
4673 | { | |
4674 | if (strcmp (sal.symtab->filename, | |
4675 | psymtab->filename) == 0) | |
4676 | PSYMTAB_TO_SYMTAB (psymtab); | |
4677 | } | |
4678 | ||
aad80b26 JG |
4679 | /* Now search the symtab for exact matches and append them. If |
4680 | none is found, append the best_item and all its exact | |
4681 | matches. */ | |
4682 | exact = append_exact_match_to_sals (sal.symtab->filename, lineno, | |
4683 | &ret, &best_item, &best_symtab); | |
ed0616c6 | 4684 | if (!exact && best_item) |
aad80b26 JG |
4685 | append_exact_match_to_sals (best_symtab->filename, best_item->line, |
4686 | &ret, &best_item, &best_symtab); | |
ed0616c6 VP |
4687 | } |
4688 | ||
4689 | /* For optimized code, compiler can scatter one source line accross | |
4690 | disjoint ranges of PC values, even when no duplicate functions | |
4691 | or inline functions are involved. For example, 'for (;;)' inside | |
4692 | non-template non-inline non-ctor-or-dtor function can result | |
4693 | in two PC ranges. In this case, we don't want to set breakpoint | |
4694 | on first PC of each range. To filter such cases, we use containing | |
4695 | blocks -- for each PC found above we see if there are other PCs | |
9af17804 | 4696 | that are in the same block. If yes, the other PCs are filtered out. */ |
ed0616c6 | 4697 | |
db009c8a JB |
4698 | filter = alloca (ret.nelts * sizeof (int)); |
4699 | blocks = alloca (ret.nelts * sizeof (struct block *)); | |
ed0616c6 VP |
4700 | for (i = 0; i < ret.nelts; ++i) |
4701 | { | |
4702 | filter[i] = 1; | |
4703 | blocks[i] = block_for_pc (ret.sals[i].pc); | |
4704 | } | |
4705 | ||
4706 | for (i = 0; i < ret.nelts; ++i) | |
4707 | if (blocks[i] != NULL) | |
4708 | for (j = i+1; j < ret.nelts; ++j) | |
4709 | if (blocks[j] == blocks[i]) | |
4710 | { | |
4711 | filter[j] = 0; | |
4712 | ++deleted; | |
4713 | break; | |
4714 | } | |
9af17804 | 4715 | |
ed0616c6 | 4716 | { |
9af17804 | 4717 | struct symtab_and_line *final = |
ed0616c6 | 4718 | xmalloc (sizeof (struct symtab_and_line) * (ret.nelts-deleted)); |
9af17804 | 4719 | |
ed0616c6 VP |
4720 | for (i = 0, j = 0; i < ret.nelts; ++i) |
4721 | if (filter[i]) | |
4722 | final[j++] = ret.sals[i]; | |
9af17804 | 4723 | |
ed0616c6 VP |
4724 | ret.nelts -= deleted; |
4725 | xfree (ret.sals); | |
4726 | ret.sals = final; | |
4727 | } | |
4728 | ||
4729 | return ret; | |
4730 | } | |
4731 | ||
4732 | ||
c906108c | 4733 | void |
fba45db2 | 4734 | _initialize_symtab (void) |
c906108c | 4735 | { |
1bedd215 AC |
4736 | add_info ("variables", variables_info, _("\ |
4737 | All global and static variable names, or those matching REGEXP.")); | |
c906108c | 4738 | if (dbx_commands) |
1bedd215 AC |
4739 | add_com ("whereis", class_info, variables_info, _("\ |
4740 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4741 | |
4742 | add_info ("functions", functions_info, | |
1bedd215 | 4743 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
4744 | |
4745 | /* FIXME: This command has at least the following problems: | |
4746 | 1. It prints builtin types (in a very strange and confusing fashion). | |
4747 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
4748 | typedef struct foo *FOO |
4749 | type_print prints "FOO" when we want to make it (in this situation) | |
4750 | print "struct foo *". | |
c906108c SS |
4751 | I also think "ptype" or "whatis" is more likely to be useful (but if |
4752 | there is much disagreement "info types" can be fixed). */ | |
4753 | add_info ("types", types_info, | |
1bedd215 | 4754 | _("All type names, or those matching REGEXP.")); |
c906108c | 4755 | |
c906108c | 4756 | add_info ("sources", sources_info, |
1bedd215 | 4757 | _("Source files in the program.")); |
c906108c SS |
4758 | |
4759 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 4760 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c SS |
4761 | |
4762 | if (xdb_commands) | |
4763 | { | |
1bedd215 AC |
4764 | add_com ("lf", class_info, sources_info, |
4765 | _("Source files in the program")); | |
4766 | add_com ("lg", class_info, variables_info, _("\ | |
4767 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4768 | } |
4769 | ||
717d2f5a JB |
4770 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
4771 | multiple_symbols_modes, &multiple_symbols_mode, | |
4772 | _("\ | |
4773 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
4774 | in an expression."), _("\ | |
4775 | Show how the debugger handles ambiguities in expressions."), _("\ | |
4776 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
4777 | NULL, NULL, &setlist, &showlist); | |
4778 | ||
ea53e89f | 4779 | observer_attach_executable_changed (symtab_observer_executable_changed); |
c906108c | 4780 | } |