Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 | |
c5aa993b | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "gdbcore.h" | |
27 | #include "frame.h" | |
28 | #include "target.h" | |
29 | #include "value.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "call-cmds.h" | |
88987551 | 34 | #include "gdb_regex.h" |
c906108c SS |
35 | #include "expression.h" |
36 | #include "language.h" | |
37 | #include "demangle.h" | |
38 | #include "inferior.h" | |
c5f0f3d0 | 39 | #include "linespec.h" |
c906108c SS |
40 | |
41 | #include "obstack.h" | |
42 | ||
43 | #include <sys/types.h> | |
44 | #include <fcntl.h> | |
45 | #include "gdb_string.h" | |
46 | #include "gdb_stat.h" | |
47 | #include <ctype.h> | |
015a42b4 | 48 | #include "cp-abi.h" |
c906108c SS |
49 | |
50 | /* Prototype for one function in parser-defs.h, | |
51 | instead of including that entire file. */ | |
52 | ||
a14ed312 | 53 | extern char *find_template_name_end (char *); |
c906108c SS |
54 | |
55 | /* Prototypes for local functions */ | |
56 | ||
a14ed312 | 57 | static void completion_list_add_name (char *, char *, int, char *, char *); |
c906108c | 58 | |
a14ed312 | 59 | static void rbreak_command (char *, int); |
c906108c | 60 | |
a14ed312 | 61 | static void types_info (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void functions_info (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void variables_info (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void sources_info (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void output_source_filename (char *, int *); |
c906108c | 70 | |
a14ed312 | 71 | static int find_line_common (struct linetable *, int, int *); |
c906108c | 72 | |
50641945 FN |
73 | /* This one is used by linespec.c */ |
74 | ||
75 | char *operator_chars (char *p, char **end); | |
76 | ||
b37bcaa8 KB |
77 | static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *, |
78 | const char *, int, | |
79 | namespace_enum); | |
c906108c | 80 | |
a14ed312 | 81 | static struct symtab *lookup_symtab_1 (char *); |
c906108c | 82 | |
fba7f19c EZ |
83 | static struct symbol *lookup_symbol_aux (const char *name, const |
84 | struct block *block, const | |
85 | namespace_enum namespace, int | |
86 | *is_a_field_of_this, struct | |
87 | symtab **symtab); | |
88 | ||
89 | ||
a14ed312 | 90 | static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr); |
c906108c SS |
91 | |
92 | /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */ | |
93 | /* Signals the presence of objects compiled by HP compilers */ | |
94 | int hp_som_som_object_present = 0; | |
95 | ||
a14ed312 | 96 | static void fixup_section (struct general_symbol_info *, struct objfile *); |
c906108c | 97 | |
a14ed312 | 98 | static int file_matches (char *, char **, int); |
c906108c | 99 | |
a14ed312 KB |
100 | static void print_symbol_info (namespace_enum, |
101 | struct symtab *, struct symbol *, int, char *); | |
c906108c | 102 | |
a14ed312 | 103 | static void print_msymbol_info (struct minimal_symbol *); |
c906108c | 104 | |
a14ed312 | 105 | static void symtab_symbol_info (char *, namespace_enum, int); |
c906108c | 106 | |
a14ed312 | 107 | static void overload_list_add_symbol (struct symbol *sym, char *oload_name); |
392a587b | 108 | |
a14ed312 | 109 | void _initialize_symtab (void); |
c906108c SS |
110 | |
111 | /* */ | |
112 | ||
113 | /* The single non-language-specific builtin type */ | |
114 | struct type *builtin_type_error; | |
115 | ||
116 | /* Block in which the most recently searched-for symbol was found. | |
117 | Might be better to make this a parameter to lookup_symbol and | |
118 | value_of_this. */ | |
119 | ||
120 | const struct block *block_found; | |
121 | ||
c906108c SS |
122 | /* While the C++ support is still in flux, issue a possibly helpful hint on |
123 | using the new command completion feature on single quoted demangled C++ | |
124 | symbols. Remove when loose ends are cleaned up. FIXME -fnf */ | |
125 | ||
126 | static void | |
fba45db2 | 127 | cplusplus_hint (char *name) |
c906108c SS |
128 | { |
129 | while (*name == '\'') | |
130 | name++; | |
131 | printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name); | |
132 | printf_filtered ("(Note leading single quote.)\n"); | |
133 | } | |
134 | ||
135 | /* Check for a symtab of a specific name; first in symtabs, then in | |
136 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
137 | in the symtab filename will also work. */ | |
138 | ||
139 | static struct symtab * | |
fba45db2 | 140 | lookup_symtab_1 (char *name) |
c906108c SS |
141 | { |
142 | register struct symtab *s; | |
143 | register struct partial_symtab *ps; | |
144 | register char *slash; | |
145 | register struct objfile *objfile; | |
146 | ||
c5aa993b | 147 | got_symtab: |
c906108c SS |
148 | |
149 | /* First, search for an exact match */ | |
150 | ||
151 | ALL_SYMTABS (objfile, s) | |
152 | if (STREQ (name, s->filename)) | |
c5aa993b | 153 | return s; |
c906108c SS |
154 | |
155 | slash = strchr (name, '/'); | |
156 | ||
157 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ | |
158 | ||
159 | if (!slash) | |
160 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
161 | { |
162 | char *p = s->filename; | |
163 | char *tail = strrchr (p, '/'); | |
c906108c | 164 | |
c5aa993b JM |
165 | if (tail) |
166 | p = tail + 1; | |
c906108c | 167 | |
c5aa993b JM |
168 | if (STREQ (p, name)) |
169 | return s; | |
170 | } | |
c906108c SS |
171 | |
172 | /* Same search rules as above apply here, but now we look thru the | |
173 | psymtabs. */ | |
174 | ||
175 | ps = lookup_partial_symtab (name); | |
176 | if (!ps) | |
177 | return (NULL); | |
178 | ||
c5aa993b | 179 | if (ps->readin) |
c906108c | 180 | error ("Internal: readin %s pst for `%s' found when no symtab found.", |
c5aa993b | 181 | ps->filename, name); |
c906108c SS |
182 | |
183 | s = PSYMTAB_TO_SYMTAB (ps); | |
184 | ||
185 | if (s) | |
186 | return s; | |
187 | ||
188 | /* At this point, we have located the psymtab for this file, but | |
189 | the conversion to a symtab has failed. This usually happens | |
190 | when we are looking up an include file. In this case, | |
191 | PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has | |
192 | been created. So, we need to run through the symtabs again in | |
193 | order to find the file. | |
194 | XXX - This is a crock, and should be fixed inside of the the | |
195 | symbol parsing routines. */ | |
196 | goto got_symtab; | |
197 | } | |
198 | ||
199 | /* Lookup the symbol table of a source file named NAME. Try a couple | |
200 | of variations if the first lookup doesn't work. */ | |
201 | ||
202 | struct symtab * | |
fba45db2 | 203 | lookup_symtab (char *name) |
c906108c SS |
204 | { |
205 | register struct symtab *s; | |
206 | #if 0 | |
207 | register char *copy; | |
208 | #endif | |
209 | ||
210 | s = lookup_symtab_1 (name); | |
c5aa993b JM |
211 | if (s) |
212 | return s; | |
c906108c SS |
213 | |
214 | #if 0 | |
215 | /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab | |
216 | "tree.c". */ | |
217 | ||
218 | /* If name not found as specified, see if adding ".c" helps. */ | |
219 | /* Why is this? Is it just a user convenience? (If so, it's pretty | |
220 | questionable in the presence of C++, FORTRAN, etc.). It's not in | |
221 | the GDB manual. */ | |
222 | ||
223 | copy = (char *) alloca (strlen (name) + 3); | |
224 | strcpy (copy, name); | |
225 | strcat (copy, ".c"); | |
226 | s = lookup_symtab_1 (copy); | |
c5aa993b JM |
227 | if (s) |
228 | return s; | |
c906108c SS |
229 | #endif /* 0 */ |
230 | ||
231 | /* We didn't find anything; die. */ | |
232 | return 0; | |
233 | } | |
234 | ||
235 | /* Lookup the partial symbol table of a source file named NAME. | |
236 | *If* there is no '/' in the name, a match after a '/' | |
237 | in the psymtab filename will also work. */ | |
238 | ||
239 | struct partial_symtab * | |
fba45db2 | 240 | lookup_partial_symtab (char *name) |
c906108c SS |
241 | { |
242 | register struct partial_symtab *pst; | |
243 | register struct objfile *objfile; | |
c5aa993b | 244 | |
c906108c | 245 | ALL_PSYMTABS (objfile, pst) |
c5aa993b JM |
246 | { |
247 | if (STREQ (name, pst->filename)) | |
248 | { | |
249 | return (pst); | |
250 | } | |
251 | } | |
c906108c SS |
252 | |
253 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ | |
254 | ||
255 | if (!strchr (name, '/')) | |
256 | ALL_PSYMTABS (objfile, pst) | |
c5aa993b JM |
257 | { |
258 | char *p = pst->filename; | |
259 | char *tail = strrchr (p, '/'); | |
c906108c | 260 | |
c5aa993b JM |
261 | if (tail) |
262 | p = tail + 1; | |
c906108c | 263 | |
c5aa993b JM |
264 | if (STREQ (p, name)) |
265 | return (pst); | |
266 | } | |
c906108c SS |
267 | |
268 | return (NULL); | |
269 | } | |
270 | \f | |
271 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
272 | full method name, which consist of the class name (from T), the unadorned | |
273 | method name from METHOD_ID, and the signature for the specific overload, | |
274 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ | |
275 | ||
276 | char * | |
fba45db2 | 277 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
278 | { |
279 | int mangled_name_len; | |
280 | char *mangled_name; | |
281 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
282 | struct fn_field *method = &f[signature_id]; | |
283 | char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); | |
284 | char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); | |
285 | char *newname = type_name_no_tag (type); | |
286 | ||
287 | /* Does the form of physname indicate that it is the full mangled name | |
288 | of a constructor (not just the args)? */ | |
289 | int is_full_physname_constructor; | |
290 | ||
291 | int is_constructor; | |
015a42b4 | 292 | int is_destructor = is_destructor_name (physname); |
c906108c SS |
293 | /* Need a new type prefix. */ |
294 | char *const_prefix = method->is_const ? "C" : ""; | |
295 | char *volatile_prefix = method->is_volatile ? "V" : ""; | |
296 | char buf[20]; | |
297 | int len = (newname == NULL ? 0 : strlen (newname)); | |
298 | ||
015a42b4 | 299 | if (is_operator_name (field_name)) |
235d1e03 EZ |
300 | return xstrdup (physname); |
301 | ||
015a42b4 | 302 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c SS |
303 | |
304 | is_constructor = | |
c5aa993b | 305 | is_full_physname_constructor || (newname && STREQ (field_name, newname)); |
c906108c SS |
306 | |
307 | if (!is_destructor) | |
c5aa993b | 308 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
c906108c SS |
309 | |
310 | if (is_destructor || is_full_physname_constructor) | |
311 | { | |
c5aa993b JM |
312 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
313 | strcpy (mangled_name, physname); | |
c906108c SS |
314 | return mangled_name; |
315 | } | |
316 | ||
317 | if (len == 0) | |
318 | { | |
319 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); | |
320 | } | |
321 | else if (physname[0] == 't' || physname[0] == 'Q') | |
322 | { | |
323 | /* The physname for template and qualified methods already includes | |
c5aa993b | 324 | the class name. */ |
c906108c SS |
325 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
326 | newname = NULL; | |
327 | len = 0; | |
328 | } | |
329 | else | |
330 | { | |
331 | sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); | |
332 | } | |
333 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 334 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 335 | |
c906108c | 336 | { |
c5aa993b | 337 | mangled_name = (char *) xmalloc (mangled_name_len); |
c906108c SS |
338 | if (is_constructor) |
339 | mangled_name[0] = '\0'; | |
340 | else | |
341 | strcpy (mangled_name, field_name); | |
342 | } | |
343 | strcat (mangled_name, buf); | |
344 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
345 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c5aa993b | 346 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
347 | if (newname != NULL) |
348 | strcat (mangled_name, newname); | |
349 | ||
350 | strcat (mangled_name, physname); | |
351 | return (mangled_name); | |
352 | } | |
c906108c SS |
353 | \f |
354 | ||
c5aa993b | 355 | |
c906108c SS |
356 | /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */ |
357 | ||
358 | struct partial_symtab * | |
fba45db2 | 359 | find_pc_sect_psymtab (CORE_ADDR pc, asection *section) |
c906108c SS |
360 | { |
361 | register struct partial_symtab *pst; | |
362 | register struct objfile *objfile; | |
363 | ||
364 | ALL_PSYMTABS (objfile, pst) | |
c5aa993b | 365 | { |
c5aa993b | 366 | if (pc >= pst->textlow && pc < pst->texthigh) |
c5aa993b JM |
367 | { |
368 | struct minimal_symbol *msymbol; | |
369 | struct partial_symtab *tpst; | |
370 | ||
371 | /* An objfile that has its functions reordered might have | |
372 | many partial symbol tables containing the PC, but | |
373 | we want the partial symbol table that contains the | |
374 | function containing the PC. */ | |
375 | if (!(objfile->flags & OBJF_REORDERED) && | |
376 | section == 0) /* can't validate section this way */ | |
377 | return (pst); | |
378 | ||
379 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
380 | if (msymbol == NULL) | |
381 | return (pst); | |
382 | ||
383 | for (tpst = pst; tpst != NULL; tpst = tpst->next) | |
384 | { | |
c5aa993b | 385 | if (pc >= tpst->textlow && pc < tpst->texthigh) |
c5aa993b JM |
386 | { |
387 | struct partial_symbol *p; | |
c906108c | 388 | |
c5aa993b JM |
389 | p = find_pc_sect_psymbol (tpst, pc, section); |
390 | if (p != NULL | |
391 | && SYMBOL_VALUE_ADDRESS (p) | |
392 | == SYMBOL_VALUE_ADDRESS (msymbol)) | |
393 | return (tpst); | |
394 | } | |
395 | } | |
396 | return (pst); | |
397 | } | |
398 | } | |
c906108c SS |
399 | return (NULL); |
400 | } | |
401 | ||
402 | /* Find which partial symtab contains PC. Return 0 if none. | |
403 | Backward compatibility, no section */ | |
404 | ||
405 | struct partial_symtab * | |
fba45db2 | 406 | find_pc_psymtab (CORE_ADDR pc) |
c906108c SS |
407 | { |
408 | return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc)); | |
409 | } | |
410 | ||
411 | /* Find which partial symbol within a psymtab matches PC and SECTION. | |
412 | Return 0 if none. Check all psymtabs if PSYMTAB is 0. */ | |
413 | ||
414 | struct partial_symbol * | |
fba45db2 KB |
415 | find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc, |
416 | asection *section) | |
c906108c SS |
417 | { |
418 | struct partial_symbol *best = NULL, *p, **pp; | |
419 | CORE_ADDR best_pc; | |
c5aa993b | 420 | |
c906108c SS |
421 | if (!psymtab) |
422 | psymtab = find_pc_sect_psymtab (pc, section); | |
423 | if (!psymtab) | |
424 | return 0; | |
425 | ||
426 | /* Cope with programs that start at address 0 */ | |
427 | best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; | |
428 | ||
429 | /* Search the global symbols as well as the static symbols, so that | |
430 | find_pc_partial_function doesn't use a minimal symbol and thus | |
431 | cache a bad endaddr. */ | |
432 | for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset; | |
c5aa993b JM |
433 | (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset) |
434 | < psymtab->n_global_syms); | |
c906108c SS |
435 | pp++) |
436 | { | |
437 | p = *pp; | |
438 | if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE | |
439 | && SYMBOL_CLASS (p) == LOC_BLOCK | |
440 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
441 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
442 | || (psymtab->textlow == 0 | |
443 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) | |
444 | { | |
c5aa993b | 445 | if (section) /* match on a specific section */ |
c906108c SS |
446 | { |
447 | fixup_psymbol_section (p, psymtab->objfile); | |
448 | if (SYMBOL_BFD_SECTION (p) != section) | |
449 | continue; | |
450 | } | |
451 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
452 | best = p; | |
453 | } | |
454 | } | |
455 | ||
456 | for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset; | |
c5aa993b JM |
457 | (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset) |
458 | < psymtab->n_static_syms); | |
c906108c SS |
459 | pp++) |
460 | { | |
461 | p = *pp; | |
462 | if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE | |
463 | && SYMBOL_CLASS (p) == LOC_BLOCK | |
464 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
465 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
c5aa993b | 466 | || (psymtab->textlow == 0 |
c906108c SS |
467 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
468 | { | |
c5aa993b | 469 | if (section) /* match on a specific section */ |
c906108c SS |
470 | { |
471 | fixup_psymbol_section (p, psymtab->objfile); | |
472 | if (SYMBOL_BFD_SECTION (p) != section) | |
473 | continue; | |
474 | } | |
475 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
476 | best = p; | |
477 | } | |
478 | } | |
479 | ||
480 | return best; | |
481 | } | |
482 | ||
483 | /* Find which partial symbol within a psymtab matches PC. Return 0 if none. | |
484 | Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */ | |
485 | ||
486 | struct partial_symbol * | |
fba45db2 | 487 | find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc) |
c906108c SS |
488 | { |
489 | return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc)); | |
490 | } | |
491 | \f | |
492 | /* Debug symbols usually don't have section information. We need to dig that | |
493 | out of the minimal symbols and stash that in the debug symbol. */ | |
494 | ||
495 | static void | |
fba45db2 | 496 | fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile) |
c906108c SS |
497 | { |
498 | struct minimal_symbol *msym; | |
499 | msym = lookup_minimal_symbol (ginfo->name, NULL, objfile); | |
500 | ||
501 | if (msym) | |
7a78d0ee KB |
502 | { |
503 | ginfo->bfd_section = SYMBOL_BFD_SECTION (msym); | |
504 | ginfo->section = SYMBOL_SECTION (msym); | |
505 | } | |
c906108c SS |
506 | } |
507 | ||
508 | struct symbol * | |
fba45db2 | 509 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c SS |
510 | { |
511 | if (!sym) | |
512 | return NULL; | |
513 | ||
514 | if (SYMBOL_BFD_SECTION (sym)) | |
515 | return sym; | |
516 | ||
517 | fixup_section (&sym->ginfo, objfile); | |
518 | ||
519 | return sym; | |
520 | } | |
521 | ||
7a78d0ee | 522 | struct partial_symbol * |
fba45db2 | 523 | fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) |
c906108c SS |
524 | { |
525 | if (!psym) | |
526 | return NULL; | |
527 | ||
528 | if (SYMBOL_BFD_SECTION (psym)) | |
529 | return psym; | |
530 | ||
531 | fixup_section (&psym->ginfo, objfile); | |
532 | ||
533 | return psym; | |
534 | } | |
535 | ||
536 | /* Find the definition for a specified symbol name NAME | |
537 | in namespace NAMESPACE, visible from lexical block BLOCK. | |
538 | Returns the struct symbol pointer, or zero if no symbol is found. | |
539 | If SYMTAB is non-NULL, store the symbol table in which the | |
540 | symbol was found there, or NULL if not found. | |
541 | C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if | |
542 | NAME is a field of the current implied argument `this'. If so set | |
543 | *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. | |
544 | BLOCK_FOUND is set to the block in which NAME is found (in the case of | |
545 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ | |
546 | ||
547 | /* This function has a bunch of loops in it and it would seem to be | |
548 | attractive to put in some QUIT's (though I'm not really sure | |
549 | whether it can run long enough to be really important). But there | |
550 | are a few calls for which it would appear to be bad news to quit | |
551 | out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and | |
552 | nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++ | |
553 | code below which can error(), but that probably doesn't affect | |
554 | these calls since they are looking for a known variable and thus | |
555 | can probably assume it will never hit the C++ code). */ | |
556 | ||
557 | struct symbol * | |
fba7f19c | 558 | lookup_symbol (const char *name, const struct block *block, |
fba45db2 KB |
559 | const namespace_enum namespace, int *is_a_field_of_this, |
560 | struct symtab **symtab) | |
c906108c | 561 | { |
fba7f19c EZ |
562 | char *modified_name = NULL; |
563 | char *modified_name2 = NULL; | |
564 | int needtofreename = 0; | |
565 | struct symbol *returnval; | |
c906108c | 566 | |
63872f9d JG |
567 | if (case_sensitivity == case_sensitive_off) |
568 | { | |
569 | char *copy; | |
570 | int len, i; | |
571 | ||
572 | len = strlen (name); | |
573 | copy = (char *) alloca (len + 1); | |
574 | for (i= 0; i < len; i++) | |
575 | copy[i] = tolower (name[i]); | |
576 | copy[len] = 0; | |
fba7f19c | 577 | modified_name = copy; |
63872f9d | 578 | } |
fba7f19c EZ |
579 | else |
580 | modified_name = (char *) name; | |
581 | ||
582 | /* If we are using C++ language, demangle the name before doing a lookup, so | |
583 | we can always binary search. */ | |
584 | if (current_language->la_language == language_cplus) | |
585 | { | |
586 | modified_name2 = cplus_demangle (modified_name, DMGL_ANSI | DMGL_PARAMS); | |
587 | if (modified_name2) | |
588 | { | |
589 | modified_name = modified_name2; | |
590 | needtofreename = 1; | |
591 | } | |
592 | } | |
593 | ||
594 | returnval = lookup_symbol_aux (modified_name, block, namespace, | |
595 | is_a_field_of_this, symtab); | |
596 | if (needtofreename) | |
b8c9b27d | 597 | xfree (modified_name2); |
fba7f19c EZ |
598 | |
599 | return returnval; | |
600 | } | |
601 | ||
602 | static struct symbol * | |
603 | lookup_symbol_aux (const char *name, const struct block *block, | |
604 | const namespace_enum namespace, int *is_a_field_of_this, | |
605 | struct symtab **symtab) | |
606 | { | |
607 | register struct symbol *sym; | |
608 | register struct symtab *s = NULL; | |
609 | register struct partial_symtab *ps; | |
610 | register struct blockvector *bv; | |
611 | register struct objfile *objfile = NULL; | |
612 | register struct block *b; | |
613 | register struct minimal_symbol *msymbol; | |
614 | ||
63872f9d | 615 | |
c906108c SS |
616 | /* Search specified block and its superiors. */ |
617 | ||
618 | while (block != 0) | |
619 | { | |
620 | sym = lookup_block_symbol (block, name, namespace); | |
c5aa993b | 621 | if (sym) |
c906108c SS |
622 | { |
623 | block_found = block; | |
624 | if (symtab != NULL) | |
625 | { | |
626 | /* Search the list of symtabs for one which contains the | |
c5aa993b | 627 | address of the start of this block. */ |
c906108c | 628 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
629 | { |
630 | bv = BLOCKVECTOR (s); | |
631 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
632 | if (BLOCK_START (b) <= BLOCK_START (block) | |
633 | && BLOCK_END (b) > BLOCK_START (block)) | |
634 | goto found; | |
635 | } | |
636 | found: | |
c906108c SS |
637 | *symtab = s; |
638 | } | |
639 | ||
640 | return fixup_symbol_section (sym, objfile); | |
641 | } | |
642 | block = BLOCK_SUPERBLOCK (block); | |
643 | } | |
644 | ||
645 | /* FIXME: this code is never executed--block is always NULL at this | |
646 | point. What is it trying to do, anyway? We already should have | |
647 | checked the STATIC_BLOCK above (it is the superblock of top-level | |
648 | blocks). Why is VAR_NAMESPACE special-cased? */ | |
649 | /* Don't need to mess with the psymtabs; if we have a block, | |
650 | that file is read in. If we don't, then we deal later with | |
651 | all the psymtab stuff that needs checking. */ | |
652 | /* Note (RT): The following never-executed code looks unnecessary to me also. | |
653 | * If we change the code to use the original (passed-in) | |
654 | * value of 'block', we could cause it to execute, but then what | |
655 | * would it do? The STATIC_BLOCK of the symtab containing the passed-in | |
656 | * 'block' was already searched by the above code. And the STATIC_BLOCK's | |
657 | * of *other* symtabs (those files not containing 'block' lexically) | |
658 | * should not contain 'block' address-wise. So we wouldn't expect this | |
659 | * code to find any 'sym''s that were not found above. I vote for | |
660 | * deleting the following paragraph of code. | |
661 | */ | |
662 | if (namespace == VAR_NAMESPACE && block != NULL) | |
663 | { | |
664 | struct block *b; | |
665 | /* Find the right symtab. */ | |
666 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
667 | { |
668 | bv = BLOCKVECTOR (s); | |
669 | b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
670 | if (BLOCK_START (b) <= BLOCK_START (block) | |
671 | && BLOCK_END (b) > BLOCK_START (block)) | |
672 | { | |
673 | sym = lookup_block_symbol (b, name, VAR_NAMESPACE); | |
674 | if (sym) | |
675 | { | |
676 | block_found = b; | |
677 | if (symtab != NULL) | |
678 | *symtab = s; | |
679 | return fixup_symbol_section (sym, objfile); | |
680 | } | |
681 | } | |
682 | } | |
c906108c SS |
683 | } |
684 | ||
685 | ||
686 | /* C++: If requested to do so by the caller, | |
687 | check to see if NAME is a field of `this'. */ | |
688 | if (is_a_field_of_this) | |
689 | { | |
690 | struct value *v = value_of_this (0); | |
c5aa993b | 691 | |
c906108c SS |
692 | *is_a_field_of_this = 0; |
693 | if (v && check_field (v, name)) | |
694 | { | |
695 | *is_a_field_of_this = 1; | |
696 | if (symtab != NULL) | |
697 | *symtab = NULL; | |
698 | return NULL; | |
699 | } | |
700 | } | |
701 | ||
702 | /* Now search all global blocks. Do the symtab's first, then | |
703 | check the psymtab's. If a psymtab indicates the existence | |
704 | of the desired name as a global, then do psymtab-to-symtab | |
705 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 706 | |
c906108c | 707 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
708 | { |
709 | bv = BLOCKVECTOR (s); | |
710 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
711 | sym = lookup_block_symbol (block, name, namespace); | |
712 | if (sym) | |
713 | { | |
714 | block_found = block; | |
715 | if (symtab != NULL) | |
716 | *symtab = s; | |
717 | return fixup_symbol_section (sym, objfile); | |
718 | } | |
719 | } | |
c906108c SS |
720 | |
721 | #ifndef HPUXHPPA | |
722 | ||
723 | /* Check for the possibility of the symbol being a function or | |
724 | a mangled variable that is stored in one of the minimal symbol tables. | |
725 | Eventually, all global symbols might be resolved in this way. */ | |
c5aa993b | 726 | |
c906108c SS |
727 | if (namespace == VAR_NAMESPACE) |
728 | { | |
729 | msymbol = lookup_minimal_symbol (name, NULL, NULL); | |
730 | if (msymbol != NULL) | |
731 | { | |
732 | s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol), | |
c5aa993b | 733 | SYMBOL_BFD_SECTION (msymbol)); |
c906108c SS |
734 | if (s != NULL) |
735 | { | |
736 | /* This is a function which has a symtab for its address. */ | |
737 | bv = BLOCKVECTOR (s); | |
738 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
739 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), | |
740 | namespace); | |
c5aa993b JM |
741 | /* We kept static functions in minimal symbol table as well as |
742 | in static scope. We want to find them in the symbol table. */ | |
743 | if (!sym) | |
744 | { | |
c906108c SS |
745 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
746 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), | |
747 | namespace); | |
748 | } | |
749 | ||
750 | /* sym == 0 if symbol was found in the minimal symbol table | |
c5aa993b JM |
751 | but not in the symtab. |
752 | Return 0 to use the msymbol definition of "foo_". | |
c906108c | 753 | |
c5aa993b JM |
754 | This happens for Fortran "foo_" symbols, |
755 | which are "foo" in the symtab. | |
c906108c | 756 | |
c5aa993b JM |
757 | This can also happen if "asm" is used to make a |
758 | regular symbol but not a debugging symbol, e.g. | |
759 | asm(".globl _main"); | |
760 | asm("_main:"); | |
761 | */ | |
c906108c SS |
762 | |
763 | if (symtab != NULL) | |
764 | *symtab = s; | |
765 | return fixup_symbol_section (sym, objfile); | |
766 | } | |
767 | else if (MSYMBOL_TYPE (msymbol) != mst_text | |
768 | && MSYMBOL_TYPE (msymbol) != mst_file_text | |
769 | && !STREQ (name, SYMBOL_NAME (msymbol))) | |
770 | { | |
771 | /* This is a mangled variable, look it up by its | |
c5aa993b | 772 | mangled name. */ |
5dbd9048 JB |
773 | return lookup_symbol_aux (SYMBOL_NAME (msymbol), block, |
774 | namespace, is_a_field_of_this, symtab); | |
c906108c SS |
775 | } |
776 | /* There are no debug symbols for this file, or we are looking | |
777 | for an unmangled variable. | |
778 | Try to find a matching static symbol below. */ | |
779 | } | |
780 | } | |
c5aa993b | 781 | |
c906108c SS |
782 | #endif |
783 | ||
784 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
785 | { |
786 | if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace)) | |
787 | { | |
788 | s = PSYMTAB_TO_SYMTAB (ps); | |
789 | bv = BLOCKVECTOR (s); | |
790 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
791 | sym = lookup_block_symbol (block, name, namespace); | |
792 | if (!sym) | |
793 | { | |
794 | /* This shouldn't be necessary, but as a last resort | |
795 | * try looking in the statics even though the psymtab | |
796 | * claimed the symbol was global. It's possible that | |
797 | * the psymtab gets it wrong in some cases. | |
798 | */ | |
799 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
800 | sym = lookup_block_symbol (block, name, namespace); | |
801 | if (!sym) | |
802 | error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ | |
c906108c SS |
803 | %s may be an inlined function, or may be a template function\n\ |
804 | (if a template, try specifying an instantiation: %s<type>).", | |
c5aa993b JM |
805 | name, ps->filename, name, name); |
806 | } | |
807 | if (symtab != NULL) | |
808 | *symtab = s; | |
809 | return fixup_symbol_section (sym, objfile); | |
810 | } | |
811 | } | |
c906108c SS |
812 | |
813 | /* Now search all static file-level symbols. | |
814 | Not strictly correct, but more useful than an error. | |
815 | Do the symtabs first, then check the psymtabs. | |
816 | If a psymtab indicates the existence | |
817 | of the desired name as a file-level static, then do psymtab-to-symtab | |
818 | conversion on the fly and return the found symbol. */ | |
819 | ||
820 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
821 | { |
822 | bv = BLOCKVECTOR (s); | |
823 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
824 | sym = lookup_block_symbol (block, name, namespace); | |
825 | if (sym) | |
826 | { | |
827 | block_found = block; | |
828 | if (symtab != NULL) | |
829 | *symtab = s; | |
830 | return fixup_symbol_section (sym, objfile); | |
831 | } | |
832 | } | |
c906108c SS |
833 | |
834 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
835 | { |
836 | if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace)) | |
837 | { | |
838 | s = PSYMTAB_TO_SYMTAB (ps); | |
839 | bv = BLOCKVECTOR (s); | |
840 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
841 | sym = lookup_block_symbol (block, name, namespace); | |
842 | if (!sym) | |
843 | { | |
844 | /* This shouldn't be necessary, but as a last resort | |
845 | * try looking in the globals even though the psymtab | |
846 | * claimed the symbol was static. It's possible that | |
847 | * the psymtab gets it wrong in some cases. | |
848 | */ | |
849 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
850 | sym = lookup_block_symbol (block, name, namespace); | |
851 | if (!sym) | |
852 | error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ | |
c906108c SS |
853 | %s may be an inlined function, or may be a template function\n\ |
854 | (if a template, try specifying an instantiation: %s<type>).", | |
c5aa993b JM |
855 | name, ps->filename, name, name); |
856 | } | |
857 | if (symtab != NULL) | |
858 | *symtab = s; | |
859 | return fixup_symbol_section (sym, objfile); | |
860 | } | |
861 | } | |
c906108c SS |
862 | |
863 | #ifdef HPUXHPPA | |
864 | ||
865 | /* Check for the possibility of the symbol being a function or | |
866 | a global variable that is stored in one of the minimal symbol tables. | |
867 | The "minimal symbol table" is built from linker-supplied info. | |
868 | ||
869 | RT: I moved this check to last, after the complete search of | |
870 | the global (p)symtab's and static (p)symtab's. For HP-generated | |
871 | symbol tables, this check was causing a premature exit from | |
872 | lookup_symbol with NULL return, and thus messing up symbol lookups | |
873 | of things like "c::f". It seems to me a check of the minimal | |
874 | symbol table ought to be a last resort in any case. I'm vaguely | |
875 | worried about the comment below which talks about FORTRAN routines "foo_" | |
876 | though... is it saying we need to do the "minsym" check before | |
877 | the static check in this case? | |
878 | */ | |
c5aa993b | 879 | |
c906108c SS |
880 | if (namespace == VAR_NAMESPACE) |
881 | { | |
882 | msymbol = lookup_minimal_symbol (name, NULL, NULL); | |
883 | if (msymbol != NULL) | |
884 | { | |
c5aa993b JM |
885 | /* OK, we found a minimal symbol in spite of not |
886 | * finding any symbol. There are various possible | |
887 | * explanations for this. One possibility is the symbol | |
888 | * exists in code not compiled -g. Another possibility | |
889 | * is that the 'psymtab' isn't doing its job. | |
890 | * A third possibility, related to #2, is that we were confused | |
891 | * by name-mangling. For instance, maybe the psymtab isn't | |
892 | * doing its job because it only know about demangled | |
893 | * names, but we were given a mangled name... | |
894 | */ | |
895 | ||
896 | /* We first use the address in the msymbol to try to | |
897 | * locate the appropriate symtab. Note that find_pc_symtab() | |
898 | * has a side-effect of doing psymtab-to-symtab expansion, | |
899 | * for the found symtab. | |
900 | */ | |
c906108c SS |
901 | s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); |
902 | if (s != NULL) | |
903 | { | |
904 | bv = BLOCKVECTOR (s); | |
905 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
906 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), | |
907 | namespace); | |
c5aa993b JM |
908 | /* We kept static functions in minimal symbol table as well as |
909 | in static scope. We want to find them in the symbol table. */ | |
910 | if (!sym) | |
911 | { | |
c906108c SS |
912 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
913 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), | |
914 | namespace); | |
915 | } | |
c5aa993b JM |
916 | /* If we found one, return it */ |
917 | if (sym) | |
918 | { | |
919 | if (symtab != NULL) | |
920 | *symtab = s; | |
921 | return sym; | |
922 | } | |
c906108c SS |
923 | |
924 | /* If we get here with sym == 0, the symbol was | |
c5aa993b JM |
925 | found in the minimal symbol table |
926 | but not in the symtab. | |
927 | Fall through and return 0 to use the msymbol | |
928 | definition of "foo_". | |
929 | (Note that outer code generally follows up a call | |
930 | to this routine with a call to lookup_minimal_symbol(), | |
931 | so a 0 return means we'll just flow into that other routine). | |
932 | ||
933 | This happens for Fortran "foo_" symbols, | |
934 | which are "foo" in the symtab. | |
935 | ||
936 | This can also happen if "asm" is used to make a | |
937 | regular symbol but not a debugging symbol, e.g. | |
938 | asm(".globl _main"); | |
939 | asm("_main:"); | |
940 | */ | |
c906108c SS |
941 | } |
942 | ||
c5aa993b JM |
943 | /* If the lookup-by-address fails, try repeating the |
944 | * entire lookup process with the symbol name from | |
945 | * the msymbol (if different from the original symbol name). | |
946 | */ | |
c906108c SS |
947 | else if (MSYMBOL_TYPE (msymbol) != mst_text |
948 | && MSYMBOL_TYPE (msymbol) != mst_file_text | |
949 | && !STREQ (name, SYMBOL_NAME (msymbol))) | |
950 | { | |
23cc649f EZ |
951 | return lookup_symbol_aux (SYMBOL_NAME (msymbol), block, |
952 | namespace, is_a_field_of_this, symtab); | |
c906108c SS |
953 | } |
954 | } | |
955 | } | |
956 | ||
957 | #endif | |
958 | ||
959 | if (symtab != NULL) | |
960 | *symtab = NULL; | |
961 | return 0; | |
962 | } | |
357e46e7 | 963 | |
c906108c SS |
964 | /* Look, in partial_symtab PST, for symbol NAME. Check the global |
965 | symbols if GLOBAL, the static symbols if not */ | |
966 | ||
967 | static struct partial_symbol * | |
fba45db2 KB |
968 | lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global, |
969 | namespace_enum namespace) | |
c906108c | 970 | { |
357e46e7 | 971 | struct partial_symbol *temp; |
c906108c SS |
972 | struct partial_symbol **start, **psym; |
973 | struct partial_symbol **top, **bottom, **center; | |
974 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
975 | int do_linear_search = 1; | |
357e46e7 | 976 | |
c906108c SS |
977 | if (length == 0) |
978 | { | |
979 | return (NULL); | |
980 | } | |
c906108c SS |
981 | start = (global ? |
982 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
c5aa993b | 983 | pst->objfile->static_psymbols.list + pst->statics_offset); |
357e46e7 | 984 | |
c5aa993b | 985 | if (global) /* This means we can use a binary search. */ |
c906108c SS |
986 | { |
987 | do_linear_search = 0; | |
988 | ||
989 | /* Binary search. This search is guaranteed to end with center | |
990 | pointing at the earliest partial symbol with the correct | |
c5aa993b JM |
991 | name. At that point *all* partial symbols with that name |
992 | will be checked against the correct namespace. */ | |
c906108c SS |
993 | |
994 | bottom = start; | |
995 | top = start + length - 1; | |
996 | while (top > bottom) | |
997 | { | |
998 | center = bottom + (top - bottom) / 2; | |
999 | if (!(center < top)) | |
e1e9e218 | 1000 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c | 1001 | if (!do_linear_search |
357e46e7 | 1002 | && (SYMBOL_LANGUAGE (*center) == language_java)) |
c906108c SS |
1003 | { |
1004 | do_linear_search = 1; | |
1005 | } | |
494b7ec9 | 1006 | if (strcmp (SYMBOL_SOURCE_NAME (*center), name) >= 0) |
c906108c SS |
1007 | { |
1008 | top = center; | |
1009 | } | |
1010 | else | |
1011 | { | |
1012 | bottom = center + 1; | |
1013 | } | |
1014 | } | |
1015 | if (!(top == bottom)) | |
e1e9e218 | 1016 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
357e46e7 DB |
1017 | |
1018 | /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so | |
1019 | we don't have to force a linear search on C++. Probably holds true | |
1020 | for JAVA as well, no way to check.*/ | |
1021 | while (SYMBOL_MATCHES_NAME (*top,name)) | |
c906108c SS |
1022 | { |
1023 | if (SYMBOL_NAMESPACE (*top) == namespace) | |
1024 | { | |
357e46e7 | 1025 | return (*top); |
c906108c | 1026 | } |
c5aa993b | 1027 | top++; |
c906108c SS |
1028 | } |
1029 | } | |
1030 | ||
1031 | /* Can't use a binary search or else we found during the binary search that | |
1032 | we should also do a linear search. */ | |
1033 | ||
1034 | if (do_linear_search) | |
357e46e7 | 1035 | { |
c906108c SS |
1036 | for (psym = start; psym < start + length; psym++) |
1037 | { | |
1038 | if (namespace == SYMBOL_NAMESPACE (*psym)) | |
1039 | { | |
1040 | if (SYMBOL_MATCHES_NAME (*psym, name)) | |
1041 | { | |
1042 | return (*psym); | |
1043 | } | |
1044 | } | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | return (NULL); | |
1049 | } | |
1050 | ||
1051 | /* Look up a type named NAME in the struct_namespace. The type returned | |
1052 | must not be opaque -- i.e., must have at least one field defined | |
1053 | ||
1054 | This code was modelled on lookup_symbol -- the parts not relevant to looking | |
1055 | up types were just left out. In particular it's assumed here that types | |
1056 | are available in struct_namespace and only at file-static or global blocks. */ | |
1057 | ||
1058 | ||
1059 | struct type * | |
fba45db2 | 1060 | lookup_transparent_type (const char *name) |
c906108c SS |
1061 | { |
1062 | register struct symbol *sym; | |
1063 | register struct symtab *s = NULL; | |
1064 | register struct partial_symtab *ps; | |
1065 | struct blockvector *bv; | |
1066 | register struct objfile *objfile; | |
1067 | register struct block *block; | |
c906108c SS |
1068 | |
1069 | /* Now search all the global symbols. Do the symtab's first, then | |
1070 | check the psymtab's. If a psymtab indicates the existence | |
1071 | of the desired name as a global, then do psymtab-to-symtab | |
1072 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 1073 | |
c906108c | 1074 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
1075 | { |
1076 | bv = BLOCKVECTOR (s); | |
1077 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1078 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); | |
1079 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1080 | { | |
1081 | return SYMBOL_TYPE (sym); | |
1082 | } | |
1083 | } | |
c906108c SS |
1084 | |
1085 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
1086 | { |
1087 | if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE)) | |
1088 | { | |
1089 | s = PSYMTAB_TO_SYMTAB (ps); | |
1090 | bv = BLOCKVECTOR (s); | |
1091 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1092 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); | |
1093 | if (!sym) | |
1094 | { | |
1095 | /* This shouldn't be necessary, but as a last resort | |
1096 | * try looking in the statics even though the psymtab | |
1097 | * claimed the symbol was global. It's possible that | |
1098 | * the psymtab gets it wrong in some cases. | |
1099 | */ | |
1100 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1101 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); | |
1102 | if (!sym) | |
1103 | error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ | |
c906108c SS |
1104 | %s may be an inlined function, or may be a template function\n\ |
1105 | (if a template, try specifying an instantiation: %s<type>).", | |
c5aa993b JM |
1106 | name, ps->filename, name, name); |
1107 | } | |
1108 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1109 | return SYMBOL_TYPE (sym); | |
1110 | } | |
1111 | } | |
c906108c SS |
1112 | |
1113 | /* Now search the static file-level symbols. | |
1114 | Not strictly correct, but more useful than an error. | |
1115 | Do the symtab's first, then | |
1116 | check the psymtab's. If a psymtab indicates the existence | |
1117 | of the desired name as a file-level static, then do psymtab-to-symtab | |
1118 | conversion on the fly and return the found symbol. | |
1119 | */ | |
1120 | ||
1121 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
1122 | { |
1123 | bv = BLOCKVECTOR (s); | |
1124 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1125 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); | |
1126 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1127 | { | |
1128 | return SYMBOL_TYPE (sym); | |
1129 | } | |
1130 | } | |
c906108c SS |
1131 | |
1132 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
1133 | { |
1134 | if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE)) | |
1135 | { | |
1136 | s = PSYMTAB_TO_SYMTAB (ps); | |
1137 | bv = BLOCKVECTOR (s); | |
1138 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1139 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); | |
1140 | if (!sym) | |
1141 | { | |
1142 | /* This shouldn't be necessary, but as a last resort | |
1143 | * try looking in the globals even though the psymtab | |
1144 | * claimed the symbol was static. It's possible that | |
1145 | * the psymtab gets it wrong in some cases. | |
1146 | */ | |
1147 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1148 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); | |
1149 | if (!sym) | |
1150 | error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ | |
c906108c SS |
1151 | %s may be an inlined function, or may be a template function\n\ |
1152 | (if a template, try specifying an instantiation: %s<type>).", | |
c5aa993b JM |
1153 | name, ps->filename, name, name); |
1154 | } | |
1155 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1156 | return SYMBOL_TYPE (sym); | |
1157 | } | |
1158 | } | |
c906108c SS |
1159 | return (struct type *) 0; |
1160 | } | |
1161 | ||
1162 | ||
1163 | /* Find the psymtab containing main(). */ | |
1164 | /* FIXME: What about languages without main() or specially linked | |
1165 | executables that have no main() ? */ | |
1166 | ||
1167 | struct partial_symtab * | |
fba45db2 | 1168 | find_main_psymtab (void) |
c906108c SS |
1169 | { |
1170 | register struct partial_symtab *pst; | |
1171 | register struct objfile *objfile; | |
1172 | ||
1173 | ALL_PSYMTABS (objfile, pst) | |
c5aa993b JM |
1174 | { |
1175 | if (lookup_partial_symbol (pst, "main", 1, VAR_NAMESPACE)) | |
1176 | { | |
1177 | return (pst); | |
1178 | } | |
1179 | } | |
c906108c SS |
1180 | return (NULL); |
1181 | } | |
1182 | ||
1183 | /* Search BLOCK for symbol NAME in NAMESPACE. | |
1184 | ||
1185 | Note that if NAME is the demangled form of a C++ symbol, we will fail | |
1186 | to find a match during the binary search of the non-encoded names, but | |
1187 | for now we don't worry about the slight inefficiency of looking for | |
1188 | a match we'll never find, since it will go pretty quick. Once the | |
1189 | binary search terminates, we drop through and do a straight linear | |
1190 | search on the symbols. Each symbol which is marked as being a C++ | |
1191 | symbol (language_cplus set) has both the encoded and non-encoded names | |
1192 | tested for a match. */ | |
1193 | ||
1194 | struct symbol * | |
fba45db2 KB |
1195 | lookup_block_symbol (register const struct block *block, const char *name, |
1196 | const namespace_enum namespace) | |
c906108c SS |
1197 | { |
1198 | register int bot, top, inc; | |
1199 | register struct symbol *sym; | |
1200 | register struct symbol *sym_found = NULL; | |
1201 | register int do_linear_search = 1; | |
1202 | ||
1203 | /* If the blocks's symbols were sorted, start with a binary search. */ | |
1204 | ||
1205 | if (BLOCK_SHOULD_SORT (block)) | |
1206 | { | |
1207 | /* Reset the linear search flag so if the binary search fails, we | |
c5aa993b | 1208 | won't do the linear search once unless we find some reason to |
fba7f19c | 1209 | do so */ |
c906108c SS |
1210 | |
1211 | do_linear_search = 0; | |
1212 | top = BLOCK_NSYMS (block); | |
1213 | bot = 0; | |
1214 | ||
1215 | /* Advance BOT to not far before the first symbol whose name is NAME. */ | |
1216 | ||
1217 | while (1) | |
1218 | { | |
1219 | inc = (top - bot + 1); | |
1220 | /* No need to keep binary searching for the last few bits worth. */ | |
1221 | if (inc < 4) | |
1222 | { | |
1223 | break; | |
1224 | } | |
1225 | inc = (inc >> 1) + bot; | |
1226 | sym = BLOCK_SYM (block, inc); | |
fba7f19c | 1227 | if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java)) |
c906108c SS |
1228 | { |
1229 | do_linear_search = 1; | |
1230 | } | |
fba7f19c | 1231 | if (SYMBOL_SOURCE_NAME (sym)[0] < name[0]) |
c906108c SS |
1232 | { |
1233 | bot = inc; | |
1234 | } | |
fba7f19c | 1235 | else if (SYMBOL_SOURCE_NAME (sym)[0] > name[0]) |
c906108c SS |
1236 | { |
1237 | top = inc; | |
1238 | } | |
494b7ec9 | 1239 | else if (strcmp (SYMBOL_SOURCE_NAME (sym), name) < 0) |
c906108c SS |
1240 | { |
1241 | bot = inc; | |
1242 | } | |
1243 | else | |
1244 | { | |
1245 | top = inc; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | /* Now scan forward until we run out of symbols, find one whose | |
c5aa993b JM |
1250 | name is greater than NAME, or find one we want. If there is |
1251 | more than one symbol with the right name and namespace, we | |
1252 | return the first one; I believe it is now impossible for us | |
1253 | to encounter two symbols with the same name and namespace | |
1254 | here, because blocks containing argument symbols are no | |
1255 | longer sorted. */ | |
c906108c SS |
1256 | |
1257 | top = BLOCK_NSYMS (block); | |
1258 | while (bot < top) | |
1259 | { | |
1260 | sym = BLOCK_SYM (block, bot); | |
c9049fc9 MC |
1261 | if (SYMBOL_NAMESPACE (sym) == namespace && |
1262 | SYMBOL_MATCHES_NAME (sym, name)) | |
1263 | { | |
1264 | return sym; | |
1265 | } | |
c906108c SS |
1266 | bot++; |
1267 | } | |
1268 | } | |
1269 | ||
1270 | /* Here if block isn't sorted, or we fail to find a match during the | |
1271 | binary search above. If during the binary search above, we find a | |
1272 | symbol which is a C++ symbol, then we have re-enabled the linear | |
1273 | search flag which was reset when starting the binary search. | |
1274 | ||
1275 | This loop is equivalent to the loop above, but hacked greatly for speed. | |
1276 | ||
1277 | Note that parameter symbols do not always show up last in the | |
1278 | list; this loop makes sure to take anything else other than | |
1279 | parameter symbols first; it only uses parameter symbols as a | |
1280 | last resort. Note that this only takes up extra computation | |
1281 | time on a match. */ | |
1282 | ||
1283 | if (do_linear_search) | |
1284 | { | |
1285 | top = BLOCK_NSYMS (block); | |
1286 | bot = 0; | |
1287 | while (bot < top) | |
1288 | { | |
1289 | sym = BLOCK_SYM (block, bot); | |
1290 | if (SYMBOL_NAMESPACE (sym) == namespace && | |
1291 | SYMBOL_MATCHES_NAME (sym, name)) | |
1292 | { | |
1293 | /* If SYM has aliases, then use any alias that is active | |
c5aa993b JM |
1294 | at the current PC. If no alias is active at the current |
1295 | PC, then use the main symbol. | |
c906108c | 1296 | |
c5aa993b | 1297 | ?!? Is checking the current pc correct? Is this routine |
a0b3c4fd JM |
1298 | ever called to look up a symbol from another context? |
1299 | ||
1300 | FIXME: No, it's not correct. If someone sets a | |
1301 | conditional breakpoint at an address, then the | |
1302 | breakpoint's `struct expression' should refer to the | |
1303 | `struct symbol' appropriate for the breakpoint's | |
1304 | address, which may not be the PC. | |
1305 | ||
1306 | Even if it were never called from another context, | |
1307 | it's totally bizarre for lookup_symbol's behavior to | |
1308 | depend on the value of the inferior's current PC. We | |
1309 | should pass in the appropriate PC as well as the | |
1310 | block. The interface to lookup_symbol should change | |
1311 | to require the caller to provide a PC. */ | |
1312 | ||
c5aa993b JM |
1313 | if (SYMBOL_ALIASES (sym)) |
1314 | sym = find_active_alias (sym, read_pc ()); | |
c906108c SS |
1315 | |
1316 | sym_found = sym; | |
1317 | if (SYMBOL_CLASS (sym) != LOC_ARG && | |
1318 | SYMBOL_CLASS (sym) != LOC_LOCAL_ARG && | |
1319 | SYMBOL_CLASS (sym) != LOC_REF_ARG && | |
1320 | SYMBOL_CLASS (sym) != LOC_REGPARM && | |
1321 | SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR && | |
1322 | SYMBOL_CLASS (sym) != LOC_BASEREG_ARG) | |
1323 | { | |
1324 | break; | |
1325 | } | |
1326 | } | |
1327 | bot++; | |
1328 | } | |
1329 | } | |
1330 | return (sym_found); /* Will be NULL if not found. */ | |
1331 | } | |
1332 | ||
1333 | /* Given a main symbol SYM and ADDR, search through the alias | |
1334 | list to determine if an alias is active at ADDR and return | |
1335 | the active alias. | |
1336 | ||
1337 | If no alias is active, then return SYM. */ | |
1338 | ||
1339 | static struct symbol * | |
fba45db2 | 1340 | find_active_alias (struct symbol *sym, CORE_ADDR addr) |
c906108c SS |
1341 | { |
1342 | struct range_list *r; | |
1343 | struct alias_list *aliases; | |
1344 | ||
1345 | /* If we have aliases, check them first. */ | |
1346 | aliases = SYMBOL_ALIASES (sym); | |
1347 | ||
1348 | while (aliases) | |
1349 | { | |
1350 | if (!SYMBOL_RANGES (aliases->sym)) | |
c5aa993b | 1351 | return aliases->sym; |
c906108c SS |
1352 | for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next) |
1353 | { | |
1354 | if (r->start <= addr && r->end > addr) | |
1355 | return aliases->sym; | |
1356 | } | |
1357 | aliases = aliases->next; | |
1358 | } | |
1359 | ||
1360 | /* Nothing found, return the main symbol. */ | |
1361 | return sym; | |
1362 | } | |
c906108c | 1363 | \f |
c5aa993b | 1364 | |
c906108c SS |
1365 | /* Return the symbol for the function which contains a specified |
1366 | lexical block, described by a struct block BL. */ | |
1367 | ||
1368 | struct symbol * | |
fba45db2 | 1369 | block_function (struct block *bl) |
c906108c SS |
1370 | { |
1371 | while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0) | |
1372 | bl = BLOCK_SUPERBLOCK (bl); | |
1373 | ||
1374 | return BLOCK_FUNCTION (bl); | |
1375 | } | |
1376 | ||
1377 | /* Find the symtab associated with PC and SECTION. Look through the | |
1378 | psymtabs and read in another symtab if necessary. */ | |
1379 | ||
1380 | struct symtab * | |
fba45db2 | 1381 | find_pc_sect_symtab (CORE_ADDR pc, asection *section) |
c906108c SS |
1382 | { |
1383 | register struct block *b; | |
1384 | struct blockvector *bv; | |
1385 | register struct symtab *s = NULL; | |
1386 | register struct symtab *best_s = NULL; | |
1387 | register struct partial_symtab *ps; | |
1388 | register struct objfile *objfile; | |
1389 | CORE_ADDR distance = 0; | |
1390 | ||
1391 | /* Search all symtabs for the one whose file contains our address, and which | |
1392 | is the smallest of all the ones containing the address. This is designed | |
1393 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
1394 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
1395 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
1396 | ||
1397 | This happens for native ecoff format, where code from included files | |
1398 | gets its own symtab. The symtab for the included file should have | |
1399 | been read in already via the dependency mechanism. | |
1400 | It might be swifter to create several symtabs with the same name | |
1401 | like xcoff does (I'm not sure). | |
1402 | ||
1403 | It also happens for objfiles that have their functions reordered. | |
1404 | For these, the symtab we are looking for is not necessarily read in. */ | |
1405 | ||
1406 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
1407 | { |
1408 | bv = BLOCKVECTOR (s); | |
1409 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 1410 | |
c5aa993b | 1411 | if (BLOCK_START (b) <= pc |
c5aa993b | 1412 | && BLOCK_END (b) > pc |
c5aa993b JM |
1413 | && (distance == 0 |
1414 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
1415 | { | |
1416 | /* For an objfile that has its functions reordered, | |
1417 | find_pc_psymtab will find the proper partial symbol table | |
1418 | and we simply return its corresponding symtab. */ | |
1419 | /* In order to better support objfiles that contain both | |
1420 | stabs and coff debugging info, we continue on if a psymtab | |
1421 | can't be found. */ | |
1422 | if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs) | |
1423 | { | |
1424 | ps = find_pc_sect_psymtab (pc, section); | |
1425 | if (ps) | |
1426 | return PSYMTAB_TO_SYMTAB (ps); | |
1427 | } | |
1428 | if (section != 0) | |
1429 | { | |
1430 | int i; | |
c906108c | 1431 | |
c5aa993b JM |
1432 | for (i = 0; i < b->nsyms; i++) |
1433 | { | |
1434 | fixup_symbol_section (b->sym[i], objfile); | |
1435 | if (section == SYMBOL_BFD_SECTION (b->sym[i])) | |
1436 | break; | |
1437 | } | |
1438 | if (i >= b->nsyms) | |
1439 | continue; /* no symbol in this symtab matches section */ | |
1440 | } | |
1441 | distance = BLOCK_END (b) - BLOCK_START (b); | |
1442 | best_s = s; | |
1443 | } | |
1444 | } | |
c906108c SS |
1445 | |
1446 | if (best_s != NULL) | |
c5aa993b | 1447 | return (best_s); |
c906108c SS |
1448 | |
1449 | s = NULL; | |
1450 | ps = find_pc_sect_psymtab (pc, section); | |
1451 | if (ps) | |
1452 | { | |
1453 | if (ps->readin) | |
1454 | /* Might want to error() here (in case symtab is corrupt and | |
1455 | will cause a core dump), but maybe we can successfully | |
1456 | continue, so let's not. */ | |
c906108c | 1457 | warning ("\ |
d730266b AC |
1458 | (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n", |
1459 | paddr_nz (pc)); | |
c906108c SS |
1460 | s = PSYMTAB_TO_SYMTAB (ps); |
1461 | } | |
1462 | return (s); | |
1463 | } | |
1464 | ||
1465 | /* Find the symtab associated with PC. Look through the psymtabs and | |
1466 | read in another symtab if necessary. Backward compatibility, no section */ | |
1467 | ||
1468 | struct symtab * | |
fba45db2 | 1469 | find_pc_symtab (CORE_ADDR pc) |
c906108c SS |
1470 | { |
1471 | return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); | |
1472 | } | |
c906108c | 1473 | \f |
c5aa993b | 1474 | |
c906108c SS |
1475 | #if 0 |
1476 | ||
1477 | /* Find the closest symbol value (of any sort -- function or variable) | |
1478 | for a given address value. Slow but complete. (currently unused, | |
1479 | mainly because it is too slow. We could fix it if each symtab and | |
1480 | psymtab had contained in it the addresses ranges of each of its | |
1481 | sections, which also would be required to make things like "info | |
1482 | line *0x2345" cause psymtabs to be converted to symtabs). */ | |
1483 | ||
1484 | struct symbol * | |
fba45db2 | 1485 | find_addr_symbol (CORE_ADDR addr, struct symtab **symtabp, CORE_ADDR *symaddrp) |
c906108c SS |
1486 | { |
1487 | struct symtab *symtab, *best_symtab; | |
1488 | struct objfile *objfile; | |
1489 | register int bot, top; | |
1490 | register struct symbol *sym; | |
1491 | register CORE_ADDR sym_addr; | |
1492 | struct block *block; | |
1493 | int blocknum; | |
1494 | ||
1495 | /* Info on best symbol seen so far */ | |
1496 | ||
1497 | register CORE_ADDR best_sym_addr = 0; | |
1498 | struct symbol *best_sym = 0; | |
1499 | ||
1500 | /* FIXME -- we should pull in all the psymtabs, too! */ | |
1501 | ALL_SYMTABS (objfile, symtab) | |
c5aa993b JM |
1502 | { |
1503 | /* Search the global and static blocks in this symtab for | |
1504 | the closest symbol-address to the desired address. */ | |
c906108c | 1505 | |
c5aa993b JM |
1506 | for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++) |
1507 | { | |
1508 | QUIT; | |
1509 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum); | |
1510 | top = BLOCK_NSYMS (block); | |
1511 | for (bot = 0; bot < top; bot++) | |
1512 | { | |
1513 | sym = BLOCK_SYM (block, bot); | |
1514 | switch (SYMBOL_CLASS (sym)) | |
1515 | { | |
1516 | case LOC_STATIC: | |
1517 | case LOC_LABEL: | |
1518 | sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
1519 | break; | |
1520 | ||
1521 | case LOC_INDIRECT: | |
1522 | sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
1523 | /* An indirect symbol really lives at *sym_addr, | |
1524 | * so an indirection needs to be done. | |
1525 | * However, I am leaving this commented out because it's | |
1526 | * expensive, and it's possible that symbolization | |
1527 | * could be done without an active process (in | |
1528 | * case this read_memory will fail). RT | |
1529 | sym_addr = read_memory_unsigned_integer | |
1530 | (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT); | |
1531 | */ | |
1532 | break; | |
c906108c | 1533 | |
c5aa993b JM |
1534 | case LOC_BLOCK: |
1535 | sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
1536 | break; | |
c906108c | 1537 | |
c5aa993b JM |
1538 | default: |
1539 | continue; | |
1540 | } | |
c906108c | 1541 | |
c5aa993b JM |
1542 | if (sym_addr <= addr) |
1543 | if (sym_addr > best_sym_addr) | |
1544 | { | |
1545 | /* Quit if we found an exact match. */ | |
1546 | best_sym = sym; | |
1547 | best_sym_addr = sym_addr; | |
1548 | best_symtab = symtab; | |
1549 | if (sym_addr == addr) | |
1550 | goto done; | |
1551 | } | |
1552 | } | |
1553 | } | |
1554 | } | |
c906108c | 1555 | |
c5aa993b | 1556 | done: |
c906108c SS |
1557 | if (symtabp) |
1558 | *symtabp = best_symtab; | |
1559 | if (symaddrp) | |
1560 | *symaddrp = best_sym_addr; | |
1561 | return best_sym; | |
1562 | } | |
1563 | #endif /* 0 */ | |
1564 | ||
7e73cedf | 1565 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
1566 | Return a structure containing a symtab pointer, a line number, |
1567 | and a pc range for the entire source line. | |
1568 | The value's .pc field is NOT the specified pc. | |
1569 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
1570 | use the line that ends there. Otherwise, in that case, the line | |
1571 | that begins there is used. */ | |
1572 | ||
1573 | /* The big complication here is that a line may start in one file, and end just | |
1574 | before the start of another file. This usually occurs when you #include | |
1575 | code in the middle of a subroutine. To properly find the end of a line's PC | |
1576 | range, we must search all symtabs associated with this compilation unit, and | |
1577 | find the one whose first PC is closer than that of the next line in this | |
1578 | symtab. */ | |
1579 | ||
1580 | /* If it's worth the effort, we could be using a binary search. */ | |
1581 | ||
1582 | struct symtab_and_line | |
fba45db2 | 1583 | find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent) |
c906108c SS |
1584 | { |
1585 | struct symtab *s; | |
1586 | register struct linetable *l; | |
1587 | register int len; | |
1588 | register int i; | |
1589 | register struct linetable_entry *item; | |
1590 | struct symtab_and_line val; | |
1591 | struct blockvector *bv; | |
1592 | struct minimal_symbol *msymbol; | |
1593 | struct minimal_symbol *mfunsym; | |
1594 | ||
1595 | /* Info on best line seen so far, and where it starts, and its file. */ | |
1596 | ||
1597 | struct linetable_entry *best = NULL; | |
1598 | CORE_ADDR best_end = 0; | |
1599 | struct symtab *best_symtab = 0; | |
1600 | ||
1601 | /* Store here the first line number | |
1602 | of a file which contains the line at the smallest pc after PC. | |
1603 | If we don't find a line whose range contains PC, | |
1604 | we will use a line one less than this, | |
1605 | with a range from the start of that file to the first line's pc. */ | |
1606 | struct linetable_entry *alt = NULL; | |
1607 | struct symtab *alt_symtab = 0; | |
1608 | ||
1609 | /* Info on best line seen in this file. */ | |
1610 | ||
1611 | struct linetable_entry *prev; | |
1612 | ||
1613 | /* If this pc is not from the current frame, | |
1614 | it is the address of the end of a call instruction. | |
1615 | Quite likely that is the start of the following statement. | |
1616 | But what we want is the statement containing the instruction. | |
1617 | Fudge the pc to make sure we get that. */ | |
1618 | ||
c5aa993b | 1619 | INIT_SAL (&val); /* initialize to zeroes */ |
c906108c SS |
1620 | |
1621 | if (notcurrent) | |
1622 | pc -= 1; | |
1623 | ||
c5aa993b | 1624 | /* elz: added this because this function returned the wrong |
c906108c SS |
1625 | information if the pc belongs to a stub (import/export) |
1626 | to call a shlib function. This stub would be anywhere between | |
1627 | two functions in the target, and the line info was erroneously | |
1628 | taken to be the one of the line before the pc. | |
c5aa993b | 1629 | */ |
c906108c | 1630 | /* RT: Further explanation: |
c5aa993b | 1631 | |
c906108c SS |
1632 | * We have stubs (trampolines) inserted between procedures. |
1633 | * | |
1634 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
1635 | * exists in the main image. | |
1636 | * | |
1637 | * In the minimal symbol table, we have a bunch of symbols | |
1638 | * sorted by start address. The stubs are marked as "trampoline", | |
1639 | * the others appear as text. E.g.: | |
1640 | * | |
1641 | * Minimal symbol table for main image | |
1642 | * main: code for main (text symbol) | |
1643 | * shr1: stub (trampoline symbol) | |
1644 | * foo: code for foo (text symbol) | |
1645 | * ... | |
1646 | * Minimal symbol table for "shr1" image: | |
1647 | * ... | |
1648 | * shr1: code for shr1 (text symbol) | |
1649 | * ... | |
1650 | * | |
1651 | * So the code below is trying to detect if we are in the stub | |
1652 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
1653 | * and if found, do the symbolization from the real-code address | |
1654 | * rather than the stub address. | |
1655 | * | |
1656 | * Assumptions being made about the minimal symbol table: | |
1657 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
1658 | * if we're really in the trampoline. If we're beyond it (say | |
1659 | * we're in "foo" in the above example), it'll have a closer | |
1660 | * symbol (the "foo" text symbol for example) and will not | |
1661 | * return the trampoline. | |
1662 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
1663 | * corresponding to the trampoline, and whose address will | |
1664 | * be different than the trampoline address. I put in a sanity | |
1665 | * check for the address being the same, to avoid an | |
1666 | * infinite recursion. | |
1667 | */ | |
c5aa993b JM |
1668 | msymbol = lookup_minimal_symbol_by_pc (pc); |
1669 | if (msymbol != NULL) | |
c906108c | 1670 | if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) |
c5aa993b JM |
1671 | { |
1672 | mfunsym = lookup_minimal_symbol_text (SYMBOL_NAME (msymbol), NULL, NULL); | |
1673 | if (mfunsym == NULL) | |
1674 | /* I eliminated this warning since it is coming out | |
1675 | * in the following situation: | |
1676 | * gdb shmain // test program with shared libraries | |
1677 | * (gdb) break shr1 // function in shared lib | |
1678 | * Warning: In stub for ... | |
1679 | * In the above situation, the shared lib is not loaded yet, | |
1680 | * so of course we can't find the real func/line info, | |
1681 | * but the "break" still works, and the warning is annoying. | |
1682 | * So I commented out the warning. RT */ | |
1683 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ; | |
1684 | /* fall through */ | |
1685 | else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol)) | |
1686 | /* Avoid infinite recursion */ | |
1687 | /* See above comment about why warning is commented out */ | |
1688 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ; | |
1689 | /* fall through */ | |
1690 | else | |
1691 | return find_pc_line (SYMBOL_VALUE (mfunsym), 0); | |
1692 | } | |
c906108c SS |
1693 | |
1694 | ||
1695 | s = find_pc_sect_symtab (pc, section); | |
1696 | if (!s) | |
1697 | { | |
1698 | /* if no symbol information, return previous pc */ | |
1699 | if (notcurrent) | |
1700 | pc++; | |
1701 | val.pc = pc; | |
1702 | return val; | |
1703 | } | |
1704 | ||
1705 | bv = BLOCKVECTOR (s); | |
1706 | ||
1707 | /* Look at all the symtabs that share this blockvector. | |
1708 | They all have the same apriori range, that we found was right; | |
1709 | but they have different line tables. */ | |
1710 | ||
1711 | for (; s && BLOCKVECTOR (s) == bv; s = s->next) | |
1712 | { | |
1713 | /* Find the best line in this symtab. */ | |
1714 | l = LINETABLE (s); | |
1715 | if (!l) | |
c5aa993b | 1716 | continue; |
c906108c SS |
1717 | len = l->nitems; |
1718 | if (len <= 0) | |
1719 | { | |
1720 | /* I think len can be zero if the symtab lacks line numbers | |
1721 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
1722 | I'm not sure which, and maybe it depends on the symbol | |
1723 | reader). */ | |
1724 | continue; | |
1725 | } | |
1726 | ||
1727 | prev = NULL; | |
1728 | item = l->item; /* Get first line info */ | |
1729 | ||
1730 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 1731 | If so, record this file, and its first line, as best alternate. */ |
c906108c SS |
1732 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
1733 | { | |
1734 | alt = item; | |
1735 | alt_symtab = s; | |
1736 | } | |
1737 | ||
1738 | for (i = 0; i < len; i++, item++) | |
1739 | { | |
1740 | /* Leave prev pointing to the linetable entry for the last line | |
1741 | that started at or before PC. */ | |
1742 | if (item->pc > pc) | |
1743 | break; | |
1744 | ||
1745 | prev = item; | |
1746 | } | |
1747 | ||
1748 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
1749 | item points at the next line. If we ran off the end of the linetable |
1750 | (pc >= start of the last line), then prev == item. If pc < start of | |
1751 | the first line, prev will not be set. */ | |
c906108c SS |
1752 | |
1753 | /* Is this file's best line closer than the best in the other files? | |
c5aa993b | 1754 | If so, record this file, and its best line, as best so far. */ |
c906108c SS |
1755 | |
1756 | if (prev && (!best || prev->pc > best->pc)) | |
1757 | { | |
1758 | best = prev; | |
1759 | best_symtab = s; | |
25d53da1 KB |
1760 | |
1761 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
1762 | if (best_end <= best->pc) | |
1763 | best_end = 0; | |
c906108c | 1764 | } |
25d53da1 KB |
1765 | |
1766 | /* If another line (denoted by ITEM) is in the linetable and its | |
1767 | PC is after BEST's PC, but before the current BEST_END, then | |
1768 | use ITEM's PC as the new best_end. */ | |
1769 | if (best && i < len && item->pc > best->pc | |
1770 | && (best_end == 0 || best_end > item->pc)) | |
1771 | best_end = item->pc; | |
c906108c SS |
1772 | } |
1773 | ||
1774 | if (!best_symtab) | |
1775 | { | |
1776 | if (!alt_symtab) | |
1777 | { /* If we didn't find any line # info, just | |
1778 | return zeros. */ | |
1779 | val.pc = pc; | |
1780 | } | |
1781 | else | |
1782 | { | |
1783 | val.symtab = alt_symtab; | |
1784 | val.line = alt->line - 1; | |
1785 | ||
1786 | /* Don't return line 0, that means that we didn't find the line. */ | |
c5aa993b JM |
1787 | if (val.line == 0) |
1788 | ++val.line; | |
c906108c SS |
1789 | |
1790 | val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
1791 | val.end = alt->pc; | |
1792 | } | |
1793 | } | |
1794 | else | |
1795 | { | |
1796 | val.symtab = best_symtab; | |
1797 | val.line = best->line; | |
1798 | val.pc = best->pc; | |
1799 | if (best_end && (!alt || best_end < alt->pc)) | |
1800 | val.end = best_end; | |
1801 | else if (alt) | |
1802 | val.end = alt->pc; | |
1803 | else | |
1804 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
1805 | } | |
1806 | val.section = section; | |
1807 | return val; | |
1808 | } | |
1809 | ||
1810 | /* Backward compatibility (no section) */ | |
1811 | ||
1812 | struct symtab_and_line | |
fba45db2 | 1813 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 1814 | { |
c5aa993b | 1815 | asection *section; |
c906108c SS |
1816 | |
1817 | section = find_pc_overlay (pc); | |
1818 | if (pc_in_unmapped_range (pc, section)) | |
1819 | pc = overlay_mapped_address (pc, section); | |
1820 | return find_pc_sect_line (pc, section, notcurrent); | |
1821 | } | |
c906108c | 1822 | \f |
c906108c SS |
1823 | /* Find line number LINE in any symtab whose name is the same as |
1824 | SYMTAB. | |
1825 | ||
1826 | If found, return the symtab that contains the linetable in which it was | |
1827 | found, set *INDEX to the index in the linetable of the best entry | |
1828 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
1829 | exact match. | |
1830 | ||
1831 | If not found, return NULL. */ | |
1832 | ||
50641945 | 1833 | struct symtab * |
fba45db2 | 1834 | find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) |
c906108c SS |
1835 | { |
1836 | int exact; | |
1837 | ||
1838 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
1839 | so far seen. */ | |
1840 | ||
1841 | int best_index; | |
1842 | struct linetable *best_linetable; | |
1843 | struct symtab *best_symtab; | |
1844 | ||
1845 | /* First try looking it up in the given symtab. */ | |
1846 | best_linetable = LINETABLE (symtab); | |
1847 | best_symtab = symtab; | |
1848 | best_index = find_line_common (best_linetable, line, &exact); | |
1849 | if (best_index < 0 || !exact) | |
1850 | { | |
1851 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
1852 | another symtab with the same name. In the case of xcoff, |
1853 | multiple csects for one source file (produced by IBM's FORTRAN | |
1854 | compiler) produce multiple symtabs (this is unavoidable | |
1855 | assuming csects can be at arbitrary places in memory and that | |
1856 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
1857 | |
1858 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
1859 | or 0 if none has been seen so far. |
1860 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
1861 | int best; |
1862 | ||
1863 | struct objfile *objfile; | |
1864 | struct symtab *s; | |
1865 | ||
1866 | if (best_index >= 0) | |
1867 | best = best_linetable->item[best_index].line; | |
1868 | else | |
1869 | best = 0; | |
1870 | ||
1871 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
1872 | { |
1873 | struct linetable *l; | |
1874 | int ind; | |
c906108c | 1875 | |
c5aa993b JM |
1876 | if (!STREQ (symtab->filename, s->filename)) |
1877 | continue; | |
1878 | l = LINETABLE (s); | |
1879 | ind = find_line_common (l, line, &exact); | |
1880 | if (ind >= 0) | |
1881 | { | |
1882 | if (exact) | |
1883 | { | |
1884 | best_index = ind; | |
1885 | best_linetable = l; | |
1886 | best_symtab = s; | |
1887 | goto done; | |
1888 | } | |
1889 | if (best == 0 || l->item[ind].line < best) | |
1890 | { | |
1891 | best = l->item[ind].line; | |
1892 | best_index = ind; | |
1893 | best_linetable = l; | |
1894 | best_symtab = s; | |
1895 | } | |
1896 | } | |
1897 | } | |
c906108c | 1898 | } |
c5aa993b | 1899 | done: |
c906108c SS |
1900 | if (best_index < 0) |
1901 | return NULL; | |
1902 | ||
1903 | if (index) | |
1904 | *index = best_index; | |
1905 | if (exact_match) | |
1906 | *exact_match = exact; | |
1907 | ||
1908 | return best_symtab; | |
1909 | } | |
1910 | \f | |
1911 | /* Set the PC value for a given source file and line number and return true. | |
1912 | Returns zero for invalid line number (and sets the PC to 0). | |
1913 | The source file is specified with a struct symtab. */ | |
1914 | ||
1915 | int | |
fba45db2 | 1916 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
1917 | { |
1918 | struct linetable *l; | |
1919 | int ind; | |
1920 | ||
1921 | *pc = 0; | |
1922 | if (symtab == 0) | |
1923 | return 0; | |
1924 | ||
1925 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
1926 | if (symtab != NULL) | |
1927 | { | |
1928 | l = LINETABLE (symtab); | |
1929 | *pc = l->item[ind].pc; | |
1930 | return 1; | |
1931 | } | |
1932 | else | |
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | /* Find the range of pc values in a line. | |
1937 | Store the starting pc of the line into *STARTPTR | |
1938 | and the ending pc (start of next line) into *ENDPTR. | |
1939 | Returns 1 to indicate success. | |
1940 | Returns 0 if could not find the specified line. */ | |
1941 | ||
1942 | int | |
fba45db2 KB |
1943 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
1944 | CORE_ADDR *endptr) | |
c906108c SS |
1945 | { |
1946 | CORE_ADDR startaddr; | |
1947 | struct symtab_and_line found_sal; | |
1948 | ||
1949 | startaddr = sal.pc; | |
c5aa993b | 1950 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
1951 | return 0; |
1952 | ||
1953 | /* This whole function is based on address. For example, if line 10 has | |
1954 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
1955 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
1956 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
1957 | This also insures that we never give a range like "starts at 0x134 | |
1958 | and ends at 0x12c". */ | |
1959 | ||
1960 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
1961 | if (found_sal.line != sal.line) | |
1962 | { | |
1963 | /* The specified line (sal) has zero bytes. */ | |
1964 | *startptr = found_sal.pc; | |
1965 | *endptr = found_sal.pc; | |
1966 | } | |
1967 | else | |
1968 | { | |
1969 | *startptr = found_sal.pc; | |
1970 | *endptr = found_sal.end; | |
1971 | } | |
1972 | return 1; | |
1973 | } | |
1974 | ||
1975 | /* Given a line table and a line number, return the index into the line | |
1976 | table for the pc of the nearest line whose number is >= the specified one. | |
1977 | Return -1 if none is found. The value is >= 0 if it is an index. | |
1978 | ||
1979 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
1980 | ||
1981 | static int | |
fba45db2 KB |
1982 | find_line_common (register struct linetable *l, register int lineno, |
1983 | int *exact_match) | |
c906108c SS |
1984 | { |
1985 | register int i; | |
1986 | register int len; | |
1987 | ||
1988 | /* BEST is the smallest linenumber > LINENO so far seen, | |
1989 | or 0 if none has been seen so far. | |
1990 | BEST_INDEX identifies the item for it. */ | |
1991 | ||
1992 | int best_index = -1; | |
1993 | int best = 0; | |
1994 | ||
1995 | if (lineno <= 0) | |
1996 | return -1; | |
1997 | if (l == 0) | |
1998 | return -1; | |
1999 | ||
2000 | len = l->nitems; | |
2001 | for (i = 0; i < len; i++) | |
2002 | { | |
2003 | register struct linetable_entry *item = &(l->item[i]); | |
2004 | ||
2005 | if (item->line == lineno) | |
2006 | { | |
2007 | /* Return the first (lowest address) entry which matches. */ | |
2008 | *exact_match = 1; | |
2009 | return i; | |
2010 | } | |
2011 | ||
2012 | if (item->line > lineno && (best == 0 || item->line < best)) | |
2013 | { | |
2014 | best = item->line; | |
2015 | best_index = i; | |
2016 | } | |
2017 | } | |
2018 | ||
2019 | /* If we got here, we didn't get an exact match. */ | |
2020 | ||
2021 | *exact_match = 0; | |
2022 | return best_index; | |
2023 | } | |
2024 | ||
2025 | int | |
fba45db2 | 2026 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
2027 | { |
2028 | struct symtab_and_line sal; | |
2029 | sal = find_pc_line (pc, 0); | |
2030 | *startptr = sal.pc; | |
2031 | *endptr = sal.end; | |
2032 | return sal.symtab != 0; | |
2033 | } | |
2034 | ||
2035 | /* Given a function symbol SYM, find the symtab and line for the start | |
2036 | of the function. | |
2037 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
2038 | of real code inside the function. */ | |
2039 | ||
50641945 | 2040 | struct symtab_and_line |
fba45db2 | 2041 | find_function_start_sal (struct symbol *sym, int funfirstline) |
c906108c SS |
2042 | { |
2043 | CORE_ADDR pc; | |
2044 | struct symtab_and_line sal; | |
2045 | ||
2046 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
2047 | fixup_symbol_section (sym, NULL); | |
2048 | if (funfirstline) | |
c5aa993b | 2049 | { /* skip "first line" of function (which is actually its prologue) */ |
c906108c SS |
2050 | asection *section = SYMBOL_BFD_SECTION (sym); |
2051 | /* If function is in an unmapped overlay, use its unmapped LMA | |
c5aa993b | 2052 | address, so that SKIP_PROLOGUE has something unique to work on */ |
c906108c SS |
2053 | if (section_is_overlay (section) && |
2054 | !section_is_mapped (section)) | |
2055 | pc = overlay_unmapped_address (pc, section); | |
2056 | ||
2057 | pc += FUNCTION_START_OFFSET; | |
b83266a0 | 2058 | pc = SKIP_PROLOGUE (pc); |
c906108c SS |
2059 | |
2060 | /* For overlays, map pc back into its mapped VMA range */ | |
2061 | pc = overlay_mapped_address (pc, section); | |
2062 | } | |
2063 | sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); | |
2064 | ||
2065 | #ifdef PROLOGUE_FIRSTLINE_OVERLAP | |
2066 | /* Convex: no need to suppress code on first line, if any */ | |
2067 | sal.pc = pc; | |
2068 | #else | |
2069 | /* Check if SKIP_PROLOGUE left us in mid-line, and the next | |
2070 | line is still part of the same function. */ | |
2071 | if (sal.pc != pc | |
2072 | && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end | |
2073 | && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
2074 | { | |
2075 | /* First pc of next line */ | |
2076 | pc = sal.end; | |
2077 | /* Recalculate the line number (might not be N+1). */ | |
2078 | sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); | |
2079 | } | |
2080 | sal.pc = pc; | |
2081 | #endif | |
2082 | ||
2083 | return sal; | |
2084 | } | |
50641945 | 2085 | |
c906108c SS |
2086 | /* If P is of the form "operator[ \t]+..." where `...' is |
2087 | some legitimate operator text, return a pointer to the | |
2088 | beginning of the substring of the operator text. | |
2089 | Otherwise, return "". */ | |
2090 | char * | |
fba45db2 | 2091 | operator_chars (char *p, char **end) |
c906108c SS |
2092 | { |
2093 | *end = ""; | |
2094 | if (strncmp (p, "operator", 8)) | |
2095 | return *end; | |
2096 | p += 8; | |
2097 | ||
2098 | /* Don't get faked out by `operator' being part of a longer | |
2099 | identifier. */ | |
c5aa993b | 2100 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
2101 | return *end; |
2102 | ||
2103 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
2104 | while (*p == ' ' || *p == '\t') | |
2105 | p++; | |
2106 | ||
2107 | /* Recognize 'operator TYPENAME'. */ | |
2108 | ||
c5aa993b | 2109 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 2110 | { |
c5aa993b JM |
2111 | register char *q = p + 1; |
2112 | while (isalnum (*q) || *q == '_' || *q == '$') | |
c906108c SS |
2113 | q++; |
2114 | *end = q; | |
2115 | return p; | |
2116 | } | |
2117 | ||
2118 | switch (*p) | |
2119 | { | |
2120 | case '!': | |
2121 | case '=': | |
2122 | case '*': | |
2123 | case '/': | |
2124 | case '%': | |
2125 | case '^': | |
2126 | if (p[1] == '=') | |
c5aa993b | 2127 | *end = p + 2; |
c906108c | 2128 | else |
c5aa993b | 2129 | *end = p + 1; |
c906108c SS |
2130 | return p; |
2131 | case '<': | |
2132 | case '>': | |
2133 | case '+': | |
2134 | case '-': | |
2135 | case '&': | |
2136 | case '|': | |
2137 | if (p[1] == '=' || p[1] == p[0]) | |
c5aa993b | 2138 | *end = p + 2; |
c906108c | 2139 | else |
c5aa993b | 2140 | *end = p + 1; |
c906108c SS |
2141 | return p; |
2142 | case '~': | |
2143 | case ',': | |
c5aa993b | 2144 | *end = p + 1; |
c906108c SS |
2145 | return p; |
2146 | case '(': | |
2147 | if (p[1] != ')') | |
2148 | error ("`operator ()' must be specified without whitespace in `()'"); | |
c5aa993b | 2149 | *end = p + 2; |
c906108c SS |
2150 | return p; |
2151 | case '?': | |
2152 | if (p[1] != ':') | |
2153 | error ("`operator ?:' must be specified without whitespace in `?:'"); | |
c5aa993b | 2154 | *end = p + 2; |
c906108c SS |
2155 | return p; |
2156 | case '[': | |
2157 | if (p[1] != ']') | |
2158 | error ("`operator []' must be specified without whitespace in `[]'"); | |
c5aa993b | 2159 | *end = p + 2; |
c906108c SS |
2160 | return p; |
2161 | default: | |
2162 | error ("`operator %s' not supported", p); | |
2163 | break; | |
2164 | } | |
2165 | *end = ""; | |
2166 | return *end; | |
2167 | } | |
c906108c | 2168 | \f |
c5aa993b | 2169 | |
c906108c SS |
2170 | /* Slave routine for sources_info. Force line breaks at ,'s. |
2171 | NAME is the name to print and *FIRST is nonzero if this is the first | |
2172 | name printed. Set *FIRST to zero. */ | |
2173 | static void | |
fba45db2 | 2174 | output_source_filename (char *name, int *first) |
c906108c SS |
2175 | { |
2176 | /* Table of files printed so far. Since a single source file can | |
2177 | result in several partial symbol tables, we need to avoid printing | |
2178 | it more than once. Note: if some of the psymtabs are read in and | |
2179 | some are not, it gets printed both under "Source files for which | |
2180 | symbols have been read" and "Source files for which symbols will | |
2181 | be read in on demand". I consider this a reasonable way to deal | |
2182 | with the situation. I'm not sure whether this can also happen for | |
2183 | symtabs; it doesn't hurt to check. */ | |
2184 | static char **tab = NULL; | |
2185 | /* Allocated size of tab in elements. | |
2186 | Start with one 256-byte block (when using GNU malloc.c). | |
2187 | 24 is the malloc overhead when range checking is in effect. */ | |
2188 | static int tab_alloc_size = (256 - 24) / sizeof (char *); | |
2189 | /* Current size of tab in elements. */ | |
2190 | static int tab_cur_size; | |
2191 | ||
2192 | char **p; | |
2193 | ||
2194 | if (*first) | |
2195 | { | |
2196 | if (tab == NULL) | |
2197 | tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab)); | |
2198 | tab_cur_size = 0; | |
2199 | } | |
2200 | ||
2201 | /* Is NAME in tab? */ | |
2202 | for (p = tab; p < tab + tab_cur_size; p++) | |
2203 | if (STREQ (*p, name)) | |
2204 | /* Yes; don't print it again. */ | |
2205 | return; | |
2206 | /* No; add it to tab. */ | |
2207 | if (tab_cur_size == tab_alloc_size) | |
2208 | { | |
2209 | tab_alloc_size *= 2; | |
2210 | tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab)); | |
2211 | } | |
2212 | tab[tab_cur_size++] = name; | |
2213 | ||
2214 | if (*first) | |
2215 | { | |
2216 | *first = 0; | |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | printf_filtered (", "); | |
2221 | } | |
2222 | ||
2223 | wrap_here (""); | |
2224 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 2225 | } |
c906108c SS |
2226 | |
2227 | static void | |
fba45db2 | 2228 | sources_info (char *ignore, int from_tty) |
c906108c SS |
2229 | { |
2230 | register struct symtab *s; | |
2231 | register struct partial_symtab *ps; | |
2232 | register struct objfile *objfile; | |
2233 | int first; | |
c5aa993b | 2234 | |
c906108c SS |
2235 | if (!have_full_symbols () && !have_partial_symbols ()) |
2236 | { | |
e85428fc | 2237 | error ("No symbol table is loaded. Use the \"file\" command."); |
c906108c | 2238 | } |
c5aa993b | 2239 | |
c906108c SS |
2240 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
2241 | ||
2242 | first = 1; | |
2243 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
2244 | { |
2245 | output_source_filename (s->filename, &first); | |
2246 | } | |
c906108c | 2247 | printf_filtered ("\n\n"); |
c5aa993b | 2248 | |
c906108c SS |
2249 | printf_filtered ("Source files for which symbols will be read in on demand:\n\n"); |
2250 | ||
2251 | first = 1; | |
2252 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
2253 | { |
2254 | if (!ps->readin) | |
2255 | { | |
2256 | output_source_filename (ps->filename, &first); | |
2257 | } | |
2258 | } | |
c906108c SS |
2259 | printf_filtered ("\n"); |
2260 | } | |
2261 | ||
2262 | static int | |
fd118b61 | 2263 | file_matches (char *file, char *files[], int nfiles) |
c906108c SS |
2264 | { |
2265 | int i; | |
2266 | ||
2267 | if (file != NULL && nfiles != 0) | |
2268 | { | |
2269 | for (i = 0; i < nfiles; i++) | |
c5aa993b JM |
2270 | { |
2271 | if (strcmp (files[i], basename (file)) == 0) | |
2272 | return 1; | |
2273 | } | |
c906108c SS |
2274 | } |
2275 | else if (nfiles == 0) | |
2276 | return 1; | |
2277 | return 0; | |
2278 | } | |
2279 | ||
2280 | /* Free any memory associated with a search. */ | |
2281 | void | |
fba45db2 | 2282 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
2283 | { |
2284 | struct symbol_search *p; | |
2285 | struct symbol_search *next; | |
2286 | ||
2287 | for (p = symbols; p != NULL; p = next) | |
2288 | { | |
2289 | next = p->next; | |
b8c9b27d | 2290 | xfree (p); |
c906108c SS |
2291 | } |
2292 | } | |
2293 | ||
5bd98722 AC |
2294 | static void |
2295 | do_free_search_symbols_cleanup (void *symbols) | |
2296 | { | |
2297 | free_search_symbols (symbols); | |
2298 | } | |
2299 | ||
2300 | struct cleanup * | |
2301 | make_cleanup_free_search_symbols (struct symbol_search *symbols) | |
2302 | { | |
2303 | return make_cleanup (do_free_search_symbols_cleanup, symbols); | |
2304 | } | |
2305 | ||
2306 | ||
c906108c SS |
2307 | /* Search the symbol table for matches to the regular expression REGEXP, |
2308 | returning the results in *MATCHES. | |
2309 | ||
2310 | Only symbols of KIND are searched: | |
c5aa993b JM |
2311 | FUNCTIONS_NAMESPACE - search all functions |
2312 | TYPES_NAMESPACE - search all type names | |
2313 | METHODS_NAMESPACE - search all methods NOT IMPLEMENTED | |
2314 | VARIABLES_NAMESPACE - search all symbols, excluding functions, type names, | |
2315 | and constants (enums) | |
c906108c SS |
2316 | |
2317 | free_search_symbols should be called when *MATCHES is no longer needed. | |
c5aa993b | 2318 | */ |
c906108c | 2319 | void |
fd118b61 KB |
2320 | search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[], |
2321 | struct symbol_search **matches) | |
c906108c SS |
2322 | { |
2323 | register struct symtab *s; | |
2324 | register struct partial_symtab *ps; | |
2325 | register struct blockvector *bv; | |
2326 | struct blockvector *prev_bv = 0; | |
2327 | register struct block *b; | |
2328 | register int i = 0; | |
2329 | register int j; | |
2330 | register struct symbol *sym; | |
2331 | struct partial_symbol **psym; | |
2332 | struct objfile *objfile; | |
2333 | struct minimal_symbol *msymbol; | |
2334 | char *val; | |
2335 | int found_misc = 0; | |
2336 | static enum minimal_symbol_type types[] | |
c5aa993b JM |
2337 | = |
2338 | {mst_data, mst_text, mst_abs, mst_unknown}; | |
c906108c | 2339 | static enum minimal_symbol_type types2[] |
c5aa993b JM |
2340 | = |
2341 | {mst_bss, mst_file_text, mst_abs, mst_unknown}; | |
c906108c | 2342 | static enum minimal_symbol_type types3[] |
c5aa993b JM |
2343 | = |
2344 | {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown}; | |
c906108c | 2345 | static enum minimal_symbol_type types4[] |
c5aa993b JM |
2346 | = |
2347 | {mst_file_bss, mst_text, mst_abs, mst_unknown}; | |
c906108c SS |
2348 | enum minimal_symbol_type ourtype; |
2349 | enum minimal_symbol_type ourtype2; | |
2350 | enum minimal_symbol_type ourtype3; | |
2351 | enum minimal_symbol_type ourtype4; | |
2352 | struct symbol_search *sr; | |
2353 | struct symbol_search *psr; | |
2354 | struct symbol_search *tail; | |
2355 | struct cleanup *old_chain = NULL; | |
2356 | ||
993f3aa5 | 2357 | if (kind < VARIABLES_NAMESPACE) |
c906108c SS |
2358 | error ("must search on specific namespace"); |
2359 | ||
52204a0b DT |
2360 | ourtype = types[(int) (kind - VARIABLES_NAMESPACE)]; |
2361 | ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)]; | |
2362 | ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)]; | |
2363 | ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)]; | |
c906108c SS |
2364 | |
2365 | sr = *matches = NULL; | |
2366 | tail = NULL; | |
2367 | ||
2368 | if (regexp != NULL) | |
2369 | { | |
2370 | /* Make sure spacing is right for C++ operators. | |
2371 | This is just a courtesy to make the matching less sensitive | |
2372 | to how many spaces the user leaves between 'operator' | |
2373 | and <TYPENAME> or <OPERATOR>. */ | |
2374 | char *opend; | |
2375 | char *opname = operator_chars (regexp, &opend); | |
2376 | if (*opname) | |
c5aa993b JM |
2377 | { |
2378 | int fix = -1; /* -1 means ok; otherwise number of spaces needed. */ | |
2379 | if (isalpha (*opname) || *opname == '_' || *opname == '$') | |
2380 | { | |
2381 | /* There should 1 space between 'operator' and 'TYPENAME'. */ | |
2382 | if (opname[-1] != ' ' || opname[-2] == ' ') | |
2383 | fix = 1; | |
2384 | } | |
2385 | else | |
2386 | { | |
2387 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ | |
2388 | if (opname[-1] == ' ') | |
2389 | fix = 0; | |
2390 | } | |
2391 | /* If wrong number of spaces, fix it. */ | |
2392 | if (fix >= 0) | |
2393 | { | |
2394 | char *tmp = (char *) alloca (opend - opname + 10); | |
2395 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); | |
2396 | regexp = tmp; | |
2397 | } | |
2398 | } | |
2399 | ||
c906108c | 2400 | if (0 != (val = re_comp (regexp))) |
c5aa993b | 2401 | error ("Invalid regexp (%s): %s", val, regexp); |
c906108c SS |
2402 | } |
2403 | ||
2404 | /* Search through the partial symtabs *first* for all symbols | |
2405 | matching the regexp. That way we don't have to reproduce all of | |
2406 | the machinery below. */ | |
2407 | ||
2408 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
2409 | { |
2410 | struct partial_symbol **bound, **gbound, **sbound; | |
2411 | int keep_going = 1; | |
2412 | ||
2413 | if (ps->readin) | |
2414 | continue; | |
2415 | ||
2416 | gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; | |
2417 | sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; | |
2418 | bound = gbound; | |
2419 | ||
2420 | /* Go through all of the symbols stored in a partial | |
2421 | symtab in one loop. */ | |
2422 | psym = objfile->global_psymbols.list + ps->globals_offset; | |
2423 | while (keep_going) | |
2424 | { | |
2425 | if (psym >= bound) | |
2426 | { | |
2427 | if (bound == gbound && ps->n_static_syms != 0) | |
2428 | { | |
2429 | psym = objfile->static_psymbols.list + ps->statics_offset; | |
2430 | bound = sbound; | |
2431 | } | |
2432 | else | |
2433 | keep_going = 0; | |
2434 | continue; | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | QUIT; | |
2439 | ||
2440 | /* If it would match (logic taken from loop below) | |
2441 | load the file and go on to the next one */ | |
2442 | if (file_matches (ps->filename, files, nfiles) | |
2443 | && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym)) | |
2444 | && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF | |
2445 | && SYMBOL_CLASS (*psym) != LOC_BLOCK) | |
2446 | || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK) | |
2447 | || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF) | |
2448 | || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)))) | |
2449 | { | |
2450 | PSYMTAB_TO_SYMTAB (ps); | |
2451 | keep_going = 0; | |
2452 | } | |
2453 | } | |
2454 | psym++; | |
2455 | } | |
2456 | } | |
c906108c SS |
2457 | |
2458 | /* Here, we search through the minimal symbol tables for functions | |
2459 | and variables that match, and force their symbols to be read. | |
2460 | This is in particular necessary for demangled variable names, | |
2461 | which are no longer put into the partial symbol tables. | |
2462 | The symbol will then be found during the scan of symtabs below. | |
2463 | ||
2464 | For functions, find_pc_symtab should succeed if we have debug info | |
2465 | for the function, for variables we have to call lookup_symbol | |
2466 | to determine if the variable has debug info. | |
2467 | If the lookup fails, set found_misc so that we will rescan to print | |
2468 | any matching symbols without debug info. | |
c5aa993b | 2469 | */ |
c906108c SS |
2470 | |
2471 | if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE)) | |
2472 | { | |
2473 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
2474 | { |
2475 | if (MSYMBOL_TYPE (msymbol) == ourtype || | |
2476 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
2477 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
2478 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
2479 | { | |
2480 | if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol)) | |
2481 | { | |
2482 | if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) | |
2483 | { | |
2484 | if (kind == FUNCTIONS_NAMESPACE | |
2485 | || lookup_symbol (SYMBOL_NAME (msymbol), | |
2486 | (struct block *) NULL, | |
2487 | VAR_NAMESPACE, | |
2488 | 0, (struct symtab **) NULL) == NULL) | |
2489 | found_misc = 1; | |
2490 | } | |
2491 | } | |
2492 | } | |
2493 | } | |
c906108c SS |
2494 | } |
2495 | ||
2496 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
2497 | { |
2498 | bv = BLOCKVECTOR (s); | |
2499 | /* Often many files share a blockvector. | |
2500 | Scan each blockvector only once so that | |
2501 | we don't get every symbol many times. | |
2502 | It happens that the first symtab in the list | |
2503 | for any given blockvector is the main file. */ | |
2504 | if (bv != prev_bv) | |
2505 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) | |
2506 | { | |
2507 | b = BLOCKVECTOR_BLOCK (bv, i); | |
2508 | /* Skip the sort if this block is always sorted. */ | |
2509 | if (!BLOCK_SHOULD_SORT (b)) | |
2510 | sort_block_syms (b); | |
2511 | for (j = 0; j < BLOCK_NSYMS (b); j++) | |
2512 | { | |
2513 | QUIT; | |
2514 | sym = BLOCK_SYM (b, j); | |
2515 | if (file_matches (s->filename, files, nfiles) | |
2516 | && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym)) | |
2517 | && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF | |
2518 | && SYMBOL_CLASS (sym) != LOC_BLOCK | |
2519 | && SYMBOL_CLASS (sym) != LOC_CONST) | |
2520 | || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
2521 | || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
2522 | || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)))) | |
2523 | { | |
2524 | /* match */ | |
2525 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
2526 | psr->block = i; | |
2527 | psr->symtab = s; | |
2528 | psr->symbol = sym; | |
2529 | psr->msymbol = NULL; | |
2530 | psr->next = NULL; | |
2531 | if (tail == NULL) | |
2532 | { | |
2533 | sr = psr; | |
5bd98722 | 2534 | old_chain = make_cleanup_free_search_symbols (sr); |
c5aa993b JM |
2535 | } |
2536 | else | |
2537 | tail->next = psr; | |
2538 | tail = psr; | |
2539 | } | |
2540 | } | |
2541 | } | |
2542 | prev_bv = bv; | |
2543 | } | |
c906108c SS |
2544 | |
2545 | /* If there are no eyes, avoid all contact. I mean, if there are | |
2546 | no debug symbols, then print directly from the msymbol_vector. */ | |
2547 | ||
2548 | if (found_misc || kind != FUNCTIONS_NAMESPACE) | |
2549 | { | |
2550 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
2551 | { |
2552 | if (MSYMBOL_TYPE (msymbol) == ourtype || | |
2553 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
2554 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
2555 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
2556 | { | |
2557 | if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol)) | |
2558 | { | |
2559 | /* Functions: Look up by address. */ | |
2560 | if (kind != FUNCTIONS_NAMESPACE || | |
2561 | (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) | |
2562 | { | |
2563 | /* Variables/Absolutes: Look up by name */ | |
2564 | if (lookup_symbol (SYMBOL_NAME (msymbol), | |
2565 | (struct block *) NULL, VAR_NAMESPACE, | |
2566 | 0, (struct symtab **) NULL) == NULL) | |
2567 | { | |
2568 | /* match */ | |
2569 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
2570 | psr->block = i; | |
2571 | psr->msymbol = msymbol; | |
2572 | psr->symtab = NULL; | |
2573 | psr->symbol = NULL; | |
2574 | psr->next = NULL; | |
2575 | if (tail == NULL) | |
2576 | { | |
2577 | sr = psr; | |
5bd98722 | 2578 | old_chain = make_cleanup_free_search_symbols (sr); |
c5aa993b JM |
2579 | } |
2580 | else | |
2581 | tail->next = psr; | |
2582 | tail = psr; | |
2583 | } | |
2584 | } | |
2585 | } | |
2586 | } | |
2587 | } | |
c906108c SS |
2588 | } |
2589 | ||
2590 | *matches = sr; | |
2591 | if (sr != NULL) | |
2592 | discard_cleanups (old_chain); | |
2593 | } | |
2594 | ||
2595 | /* Helper function for symtab_symbol_info, this function uses | |
2596 | the data returned from search_symbols() to print information | |
2597 | regarding the match to gdb_stdout. | |
c5aa993b | 2598 | */ |
c906108c | 2599 | static void |
fba45db2 KB |
2600 | print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym, |
2601 | int block, char *last) | |
c906108c SS |
2602 | { |
2603 | if (last == NULL || strcmp (last, s->filename) != 0) | |
2604 | { | |
2605 | fputs_filtered ("\nFile ", gdb_stdout); | |
2606 | fputs_filtered (s->filename, gdb_stdout); | |
2607 | fputs_filtered (":\n", gdb_stdout); | |
2608 | } | |
2609 | ||
2610 | if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK) | |
2611 | printf_filtered ("static "); | |
c5aa993b | 2612 | |
c906108c SS |
2613 | /* Typedef that is not a C++ class */ |
2614 | if (kind == TYPES_NAMESPACE | |
2615 | && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE) | |
a5238fbc | 2616 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c906108c | 2617 | /* variable, func, or typedef-that-is-c++-class */ |
c5aa993b JM |
2618 | else if (kind < TYPES_NAMESPACE || |
2619 | (kind == TYPES_NAMESPACE && | |
2620 | SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE)) | |
c906108c SS |
2621 | { |
2622 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b JM |
2623 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
2624 | ? "" : SYMBOL_SOURCE_NAME (sym)), | |
2625 | gdb_stdout, 0); | |
c906108c SS |
2626 | |
2627 | printf_filtered (";\n"); | |
2628 | } | |
2629 | else | |
2630 | { | |
c5aa993b | 2631 | #if 0 |
c906108c SS |
2632 | /* Tiemann says: "info methods was never implemented." */ |
2633 | char *demangled_name; | |
c5aa993b JM |
2634 | c_type_print_base (TYPE_FN_FIELD_TYPE (t, block), |
2635 | gdb_stdout, 0, 0); | |
2636 | c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t, block), | |
2637 | gdb_stdout, 0); | |
c906108c | 2638 | if (TYPE_FN_FIELD_STUB (t, block)) |
c5aa993b | 2639 | check_stub_method (TYPE_DOMAIN_TYPE (type), j, block); |
c906108c | 2640 | demangled_name = |
c5aa993b JM |
2641 | cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t, block), |
2642 | DMGL_ANSI | DMGL_PARAMS); | |
c906108c | 2643 | if (demangled_name == NULL) |
c5aa993b JM |
2644 | fprintf_filtered (stream, "<badly mangled name %s>", |
2645 | TYPE_FN_FIELD_PHYSNAME (t, block)); | |
c906108c | 2646 | else |
c5aa993b JM |
2647 | { |
2648 | fputs_filtered (demangled_name, stream); | |
b8c9b27d | 2649 | xfree (demangled_name); |
c5aa993b JM |
2650 | } |
2651 | #endif | |
c906108c SS |
2652 | } |
2653 | } | |
2654 | ||
2655 | /* This help function for symtab_symbol_info() prints information | |
2656 | for non-debugging symbols to gdb_stdout. | |
c5aa993b | 2657 | */ |
c906108c | 2658 | static void |
fba45db2 | 2659 | print_msymbol_info (struct minimal_symbol *msymbol) |
c906108c SS |
2660 | { |
2661 | printf_filtered (" %08lx %s\n", | |
c5aa993b JM |
2662 | (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol), |
2663 | SYMBOL_SOURCE_NAME (msymbol)); | |
c906108c SS |
2664 | } |
2665 | ||
2666 | /* This is the guts of the commands "info functions", "info types", and | |
2667 | "info variables". It calls search_symbols to find all matches and then | |
2668 | print_[m]symbol_info to print out some useful information about the | |
2669 | matches. | |
c5aa993b | 2670 | */ |
c906108c | 2671 | static void |
fba45db2 | 2672 | symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty) |
c906108c SS |
2673 | { |
2674 | static char *classnames[] | |
c5aa993b JM |
2675 | = |
2676 | {"variable", "function", "type", "method"}; | |
c906108c SS |
2677 | struct symbol_search *symbols; |
2678 | struct symbol_search *p; | |
2679 | struct cleanup *old_chain; | |
2680 | char *last_filename = NULL; | |
2681 | int first = 1; | |
2682 | ||
2683 | /* must make sure that if we're interrupted, symbols gets freed */ | |
2684 | search_symbols (regexp, kind, 0, (char **) NULL, &symbols); | |
5bd98722 | 2685 | old_chain = make_cleanup_free_search_symbols (symbols); |
c906108c SS |
2686 | |
2687 | printf_filtered (regexp | |
c5aa993b JM |
2688 | ? "All %ss matching regular expression \"%s\":\n" |
2689 | : "All defined %ss:\n", | |
52204a0b | 2690 | classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp); |
c906108c SS |
2691 | |
2692 | for (p = symbols; p != NULL; p = p->next) | |
2693 | { | |
2694 | QUIT; | |
2695 | ||
2696 | if (p->msymbol != NULL) | |
c5aa993b JM |
2697 | { |
2698 | if (first) | |
2699 | { | |
2700 | printf_filtered ("\nNon-debugging symbols:\n"); | |
2701 | first = 0; | |
2702 | } | |
2703 | print_msymbol_info (p->msymbol); | |
2704 | } | |
c906108c | 2705 | else |
c5aa993b JM |
2706 | { |
2707 | print_symbol_info (kind, | |
2708 | p->symtab, | |
2709 | p->symbol, | |
2710 | p->block, | |
2711 | last_filename); | |
2712 | last_filename = p->symtab->filename; | |
2713 | } | |
c906108c SS |
2714 | } |
2715 | ||
2716 | do_cleanups (old_chain); | |
2717 | } | |
2718 | ||
2719 | static void | |
fba45db2 | 2720 | variables_info (char *regexp, int from_tty) |
c906108c SS |
2721 | { |
2722 | symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty); | |
2723 | } | |
2724 | ||
2725 | static void | |
fba45db2 | 2726 | functions_info (char *regexp, int from_tty) |
c906108c SS |
2727 | { |
2728 | symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty); | |
2729 | } | |
2730 | ||
357e46e7 | 2731 | |
c906108c | 2732 | static void |
fba45db2 | 2733 | types_info (char *regexp, int from_tty) |
c906108c SS |
2734 | { |
2735 | symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty); | |
2736 | } | |
2737 | ||
2738 | #if 0 | |
2739 | /* Tiemann says: "info methods was never implemented." */ | |
2740 | static void | |
fba45db2 | 2741 | methods_info (char *regexp) |
c906108c SS |
2742 | { |
2743 | symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty); | |
2744 | } | |
2745 | #endif /* 0 */ | |
2746 | ||
2747 | /* Breakpoint all functions matching regular expression. */ | |
8b93c638 JM |
2748 | #ifdef UI_OUT |
2749 | void | |
fba45db2 | 2750 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
2751 | { |
2752 | rbreak_command (regexp, from_tty); | |
2753 | } | |
2754 | #endif | |
c906108c | 2755 | static void |
fba45db2 | 2756 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
2757 | { |
2758 | struct symbol_search *ss; | |
2759 | struct symbol_search *p; | |
2760 | struct cleanup *old_chain; | |
2761 | ||
2762 | search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss); | |
5bd98722 | 2763 | old_chain = make_cleanup_free_search_symbols (ss); |
c906108c SS |
2764 | |
2765 | for (p = ss; p != NULL; p = p->next) | |
2766 | { | |
2767 | if (p->msymbol == NULL) | |
c5aa993b JM |
2768 | { |
2769 | char *string = (char *) alloca (strlen (p->symtab->filename) | |
2770 | + strlen (SYMBOL_NAME (p->symbol)) | |
2771 | + 4); | |
2772 | strcpy (string, p->symtab->filename); | |
2773 | strcat (string, ":'"); | |
2774 | strcat (string, SYMBOL_NAME (p->symbol)); | |
2775 | strcat (string, "'"); | |
2776 | break_command (string, from_tty); | |
2777 | print_symbol_info (FUNCTIONS_NAMESPACE, | |
2778 | p->symtab, | |
2779 | p->symbol, | |
2780 | p->block, | |
2781 | p->symtab->filename); | |
2782 | } | |
c906108c | 2783 | else |
c5aa993b JM |
2784 | { |
2785 | break_command (SYMBOL_NAME (p->msymbol), from_tty); | |
2786 | printf_filtered ("<function, no debug info> %s;\n", | |
2787 | SYMBOL_SOURCE_NAME (p->msymbol)); | |
2788 | } | |
c906108c SS |
2789 | } |
2790 | ||
2791 | do_cleanups (old_chain); | |
2792 | } | |
c906108c | 2793 | \f |
c5aa993b | 2794 | |
c906108c SS |
2795 | /* Return Nonzero if block a is lexically nested within block b, |
2796 | or if a and b have the same pc range. | |
2797 | Return zero otherwise. */ | |
2798 | int | |
fba45db2 | 2799 | contained_in (struct block *a, struct block *b) |
c906108c SS |
2800 | { |
2801 | if (!a || !b) | |
2802 | return 0; | |
2803 | return BLOCK_START (a) >= BLOCK_START (b) | |
c5aa993b | 2804 | && BLOCK_END (a) <= BLOCK_END (b); |
c906108c | 2805 | } |
c906108c | 2806 | \f |
c5aa993b | 2807 | |
c906108c SS |
2808 | /* Helper routine for make_symbol_completion_list. */ |
2809 | ||
2810 | static int return_val_size; | |
2811 | static int return_val_index; | |
2812 | static char **return_val; | |
2813 | ||
2814 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
2815 | do { \ | |
2816 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \ | |
2817 | /* Put only the mangled name on the list. */ \ | |
2818 | /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \ | |
2819 | /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \ | |
2820 | completion_list_add_name \ | |
2821 | (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \ | |
2822 | else \ | |
2823 | completion_list_add_name \ | |
2824 | (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \ | |
2825 | } while (0) | |
2826 | ||
2827 | /* Test to see if the symbol specified by SYMNAME (which is already | |
c5aa993b JM |
2828 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
2829 | characters. If so, add it to the current completion list. */ | |
c906108c SS |
2830 | |
2831 | static void | |
fba45db2 KB |
2832 | completion_list_add_name (char *symname, char *sym_text, int sym_text_len, |
2833 | char *text, char *word) | |
c906108c SS |
2834 | { |
2835 | int newsize; | |
2836 | int i; | |
2837 | ||
2838 | /* clip symbols that cannot match */ | |
2839 | ||
2840 | if (strncmp (symname, sym_text, sym_text_len) != 0) | |
2841 | { | |
2842 | return; | |
2843 | } | |
2844 | ||
c906108c SS |
2845 | /* We have a match for a completion, so add SYMNAME to the current list |
2846 | of matches. Note that the name is moved to freshly malloc'd space. */ | |
2847 | ||
2848 | { | |
2849 | char *new; | |
2850 | if (word == sym_text) | |
2851 | { | |
2852 | new = xmalloc (strlen (symname) + 5); | |
2853 | strcpy (new, symname); | |
2854 | } | |
2855 | else if (word > sym_text) | |
2856 | { | |
2857 | /* Return some portion of symname. */ | |
2858 | new = xmalloc (strlen (symname) + 5); | |
2859 | strcpy (new, symname + (word - sym_text)); | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | /* Return some of SYM_TEXT plus symname. */ | |
2864 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); | |
2865 | strncpy (new, word, sym_text - word); | |
2866 | new[sym_text - word] = '\0'; | |
2867 | strcat (new, symname); | |
2868 | } | |
2869 | ||
c906108c SS |
2870 | if (return_val_index + 3 > return_val_size) |
2871 | { | |
2872 | newsize = (return_val_size *= 2) * sizeof (char *); | |
2873 | return_val = (char **) xrealloc ((char *) return_val, newsize); | |
2874 | } | |
2875 | return_val[return_val_index++] = new; | |
2876 | return_val[return_val_index] = NULL; | |
2877 | } | |
2878 | } | |
2879 | ||
2880 | /* Return a NULL terminated array of all symbols (regardless of class) which | |
2881 | begin by matching TEXT. If the answer is no symbols, then the return value | |
2882 | is an array which contains only a NULL pointer. | |
2883 | ||
2884 | Problem: All of the symbols have to be copied because readline frees them. | |
2885 | I'm not going to worry about this; hopefully there won't be that many. */ | |
2886 | ||
2887 | char ** | |
fba45db2 | 2888 | make_symbol_completion_list (char *text, char *word) |
c906108c SS |
2889 | { |
2890 | register struct symbol *sym; | |
2891 | register struct symtab *s; | |
2892 | register struct partial_symtab *ps; | |
2893 | register struct minimal_symbol *msymbol; | |
2894 | register struct objfile *objfile; | |
2895 | register struct block *b, *surrounding_static_block = 0; | |
2896 | register int i, j; | |
2897 | struct partial_symbol **psym; | |
2898 | /* The symbol we are completing on. Points in same buffer as text. */ | |
2899 | char *sym_text; | |
2900 | /* Length of sym_text. */ | |
2901 | int sym_text_len; | |
2902 | ||
2903 | /* Now look for the symbol we are supposed to complete on. | |
2904 | FIXME: This should be language-specific. */ | |
2905 | { | |
2906 | char *p; | |
2907 | char quote_found; | |
2908 | char *quote_pos = NULL; | |
2909 | ||
2910 | /* First see if this is a quoted string. */ | |
2911 | quote_found = '\0'; | |
2912 | for (p = text; *p != '\0'; ++p) | |
2913 | { | |
2914 | if (quote_found != '\0') | |
2915 | { | |
2916 | if (*p == quote_found) | |
2917 | /* Found close quote. */ | |
2918 | quote_found = '\0'; | |
2919 | else if (*p == '\\' && p[1] == quote_found) | |
2920 | /* A backslash followed by the quote character | |
c5aa993b | 2921 | doesn't end the string. */ |
c906108c SS |
2922 | ++p; |
2923 | } | |
2924 | else if (*p == '\'' || *p == '"') | |
2925 | { | |
2926 | quote_found = *p; | |
2927 | quote_pos = p; | |
2928 | } | |
2929 | } | |
2930 | if (quote_found == '\'') | |
2931 | /* A string within single quotes can be a symbol, so complete on it. */ | |
2932 | sym_text = quote_pos + 1; | |
2933 | else if (quote_found == '"') | |
2934 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 2935 | to complete it any other way. */ |
c906108c SS |
2936 | return NULL; |
2937 | else | |
2938 | { | |
2939 | /* It is not a quoted string. Break it based on the characters | |
2940 | which are in symbols. */ | |
2941 | while (p > text) | |
2942 | { | |
2943 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
2944 | --p; | |
2945 | else | |
2946 | break; | |
2947 | } | |
2948 | sym_text = p; | |
2949 | } | |
2950 | } | |
2951 | ||
2952 | sym_text_len = strlen (sym_text); | |
2953 | ||
2954 | return_val_size = 100; | |
2955 | return_val_index = 0; | |
2956 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
2957 | return_val[0] = NULL; | |
2958 | ||
2959 | /* Look through the partial symtabs for all symbols which begin | |
2960 | by matching SYM_TEXT. Add each one that you find to the list. */ | |
2961 | ||
2962 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
2963 | { |
2964 | /* If the psymtab's been read in we'll get it when we search | |
2965 | through the blockvector. */ | |
2966 | if (ps->readin) | |
2967 | continue; | |
2968 | ||
2969 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
2970 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
2971 | + ps->n_global_syms); | |
2972 | psym++) | |
2973 | { | |
2974 | /* If interrupted, then quit. */ | |
2975 | QUIT; | |
2976 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); | |
2977 | } | |
2978 | ||
2979 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
2980 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
2981 | + ps->n_static_syms); | |
2982 | psym++) | |
2983 | { | |
2984 | QUIT; | |
2985 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); | |
2986 | } | |
2987 | } | |
c906108c SS |
2988 | |
2989 | /* At this point scan through the misc symbol vectors and add each | |
2990 | symbol you find to the list. Eventually we want to ignore | |
2991 | anything that isn't a text symbol (everything else will be | |
2992 | handled by the psymtab code above). */ | |
2993 | ||
2994 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
2995 | { |
2996 | QUIT; | |
2997 | COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); | |
2998 | } | |
c906108c SS |
2999 | |
3000 | /* Search upwards from currently selected frame (so that we can | |
3001 | complete on local vars. */ | |
3002 | ||
3003 | for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
3004 | { | |
3005 | if (!BLOCK_SUPERBLOCK (b)) | |
3006 | { | |
c5aa993b | 3007 | surrounding_static_block = b; /* For elmin of dups */ |
c906108c | 3008 | } |
c5aa993b | 3009 | |
c906108c | 3010 | /* Also catch fields of types defined in this places which match our |
c5aa993b | 3011 | text string. Only complete on types visible from current context. */ |
c906108c SS |
3012 | |
3013 | for (i = 0; i < BLOCK_NSYMS (b); i++) | |
3014 | { | |
3015 | sym = BLOCK_SYM (b, i); | |
3016 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); | |
3017 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
3018 | { | |
3019 | struct type *t = SYMBOL_TYPE (sym); | |
3020 | enum type_code c = TYPE_CODE (t); | |
3021 | ||
3022 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
3023 | { | |
3024 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
3025 | { | |
3026 | if (TYPE_FIELD_NAME (t, j)) | |
3027 | { | |
3028 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
c5aa993b | 3029 | sym_text, sym_text_len, text, word); |
c906108c SS |
3030 | } |
3031 | } | |
3032 | } | |
3033 | } | |
3034 | } | |
3035 | } | |
3036 | ||
3037 | /* Go through the symtabs and check the externs and statics for | |
3038 | symbols which match. */ | |
3039 | ||
3040 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
3041 | { |
3042 | QUIT; | |
3043 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
3044 | for (i = 0; i < BLOCK_NSYMS (b); i++) | |
3045 | { | |
3046 | sym = BLOCK_SYM (b, i); | |
3047 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); | |
3048 | } | |
3049 | } | |
c906108c SS |
3050 | |
3051 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
3052 | { |
3053 | QUIT; | |
3054 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
3055 | /* Don't do this block twice. */ | |
3056 | if (b == surrounding_static_block) | |
3057 | continue; | |
3058 | for (i = 0; i < BLOCK_NSYMS (b); i++) | |
3059 | { | |
3060 | sym = BLOCK_SYM (b, i); | |
3061 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); | |
3062 | } | |
3063 | } | |
c906108c SS |
3064 | |
3065 | return (return_val); | |
3066 | } | |
3067 | ||
3068 | /* Determine if PC is in the prologue of a function. The prologue is the area | |
3069 | between the first instruction of a function, and the first executable line. | |
3070 | Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. | |
3071 | ||
3072 | If non-zero, func_start is where we think the prologue starts, possibly | |
3073 | by previous examination of symbol table information. | |
3074 | */ | |
3075 | ||
3076 | int | |
fba45db2 | 3077 | in_prologue (CORE_ADDR pc, CORE_ADDR func_start) |
c906108c SS |
3078 | { |
3079 | struct symtab_and_line sal; | |
3080 | CORE_ADDR func_addr, func_end; | |
3081 | ||
54cf9c03 EZ |
3082 | /* We have several sources of information we can consult to figure |
3083 | this out. | |
3084 | - Compilers usually emit line number info that marks the prologue | |
3085 | as its own "source line". So the ending address of that "line" | |
3086 | is the end of the prologue. If available, this is the most | |
3087 | reliable method. | |
3088 | - The minimal symbols and partial symbols, which can usually tell | |
3089 | us the starting and ending addresses of a function. | |
3090 | - If we know the function's start address, we can call the | |
3091 | architecture-defined SKIP_PROLOGUE function to analyze the | |
3092 | instruction stream and guess where the prologue ends. | |
3093 | - Our `func_start' argument; if non-zero, this is the caller's | |
3094 | best guess as to the function's entry point. At the time of | |
3095 | this writing, handle_inferior_event doesn't get this right, so | |
3096 | it should be our last resort. */ | |
3097 | ||
3098 | /* Consult the partial symbol table, to find which function | |
3099 | the PC is in. */ | |
3100 | if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
3101 | { | |
3102 | CORE_ADDR prologue_end; | |
c906108c | 3103 | |
54cf9c03 EZ |
3104 | /* We don't even have minsym information, so fall back to using |
3105 | func_start, if given. */ | |
3106 | if (! func_start) | |
3107 | return 1; /* We *might* be in a prologue. */ | |
c906108c | 3108 | |
54cf9c03 | 3109 | prologue_end = SKIP_PROLOGUE (func_start); |
c906108c | 3110 | |
54cf9c03 EZ |
3111 | return func_start <= pc && pc < prologue_end; |
3112 | } | |
c906108c | 3113 | |
54cf9c03 EZ |
3114 | /* If we have line number information for the function, that's |
3115 | usually pretty reliable. */ | |
3116 | sal = find_pc_line (func_addr, 0); | |
c906108c | 3117 | |
54cf9c03 EZ |
3118 | /* Now sal describes the source line at the function's entry point, |
3119 | which (by convention) is the prologue. The end of that "line", | |
3120 | sal.end, is the end of the prologue. | |
3121 | ||
3122 | Note that, for functions whose source code is all on a single | |
3123 | line, the line number information doesn't always end up this way. | |
3124 | So we must verify that our purported end-of-prologue address is | |
3125 | *within* the function, not at its start or end. */ | |
3126 | if (sal.line == 0 | |
3127 | || sal.end <= func_addr | |
3128 | || func_end <= sal.end) | |
3129 | { | |
3130 | /* We don't have any good line number info, so use the minsym | |
3131 | information, together with the architecture-specific prologue | |
3132 | scanning code. */ | |
3133 | CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr); | |
c906108c | 3134 | |
54cf9c03 EZ |
3135 | return func_addr <= pc && pc < prologue_end; |
3136 | } | |
c906108c | 3137 | |
54cf9c03 EZ |
3138 | /* We have line number info, and it looks good. */ |
3139 | return func_addr <= pc && pc < sal.end; | |
c906108c SS |
3140 | } |
3141 | ||
3142 | ||
3143 | /* Begin overload resolution functions */ | |
3144 | /* Helper routine for make_symbol_completion_list. */ | |
3145 | ||
3146 | static int sym_return_val_size; | |
3147 | static int sym_return_val_index; | |
3148 | static struct symbol **sym_return_val; | |
3149 | ||
3150 | /* Test to see if the symbol specified by SYMNAME (which is already | |
c5aa993b JM |
3151 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
3152 | characters. If so, add it to the current completion list. */ | |
c906108c SS |
3153 | |
3154 | static void | |
fba45db2 | 3155 | overload_list_add_symbol (struct symbol *sym, char *oload_name) |
c906108c SS |
3156 | { |
3157 | int newsize; | |
3158 | int i; | |
3159 | ||
3160 | /* Get the demangled name without parameters */ | |
c5aa993b | 3161 | char *sym_name = cplus_demangle (SYMBOL_NAME (sym), DMGL_ARM | DMGL_ANSI); |
c906108c SS |
3162 | if (!sym_name) |
3163 | { | |
3164 | sym_name = (char *) xmalloc (strlen (SYMBOL_NAME (sym)) + 1); | |
3165 | strcpy (sym_name, SYMBOL_NAME (sym)); | |
3166 | } | |
3167 | ||
3168 | /* skip symbols that cannot match */ | |
3169 | if (strcmp (sym_name, oload_name) != 0) | |
917317f4 | 3170 | { |
b8c9b27d | 3171 | xfree (sym_name); |
917317f4 JM |
3172 | return; |
3173 | } | |
c906108c SS |
3174 | |
3175 | /* If there is no type information, we can't do anything, so skip */ | |
3176 | if (SYMBOL_TYPE (sym) == NULL) | |
3177 | return; | |
3178 | ||
3179 | /* skip any symbols that we've already considered. */ | |
3180 | for (i = 0; i < sym_return_val_index; ++i) | |
3181 | if (!strcmp (SYMBOL_NAME (sym), SYMBOL_NAME (sym_return_val[i]))) | |
3182 | return; | |
3183 | ||
3184 | /* We have a match for an overload instance, so add SYM to the current list | |
3185 | * of overload instances */ | |
3186 | if (sym_return_val_index + 3 > sym_return_val_size) | |
3187 | { | |
3188 | newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *); | |
3189 | sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize); | |
3190 | } | |
3191 | sym_return_val[sym_return_val_index++] = sym; | |
3192 | sym_return_val[sym_return_val_index] = NULL; | |
c5aa993b | 3193 | |
b8c9b27d | 3194 | xfree (sym_name); |
c906108c SS |
3195 | } |
3196 | ||
3197 | /* Return a null-terminated list of pointers to function symbols that | |
3198 | * match name of the supplied symbol FSYM. | |
3199 | * This is used in finding all overloaded instances of a function name. | |
3200 | * This has been modified from make_symbol_completion_list. */ | |
3201 | ||
3202 | ||
3203 | struct symbol ** | |
fba45db2 | 3204 | make_symbol_overload_list (struct symbol *fsym) |
c906108c SS |
3205 | { |
3206 | register struct symbol *sym; | |
3207 | register struct symtab *s; | |
3208 | register struct partial_symtab *ps; | |
c906108c SS |
3209 | register struct objfile *objfile; |
3210 | register struct block *b, *surrounding_static_block = 0; | |
d4f3574e | 3211 | register int i; |
c906108c SS |
3212 | /* The name we are completing on. */ |
3213 | char *oload_name = NULL; | |
3214 | /* Length of name. */ | |
3215 | int oload_name_len = 0; | |
3216 | ||
3217 | /* Look for the symbol we are supposed to complete on. | |
3218 | * FIXME: This should be language-specific. */ | |
3219 | ||
3220 | oload_name = cplus_demangle (SYMBOL_NAME (fsym), DMGL_ARM | DMGL_ANSI); | |
3221 | if (!oload_name) | |
3222 | { | |
3223 | oload_name = (char *) xmalloc (strlen (SYMBOL_NAME (fsym)) + 1); | |
3224 | strcpy (oload_name, SYMBOL_NAME (fsym)); | |
3225 | } | |
3226 | oload_name_len = strlen (oload_name); | |
3227 | ||
3228 | sym_return_val_size = 100; | |
3229 | sym_return_val_index = 0; | |
3230 | sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *)); | |
3231 | sym_return_val[0] = NULL; | |
3232 | ||
3233 | /* Look through the partial symtabs for all symbols which begin | |
917317f4 | 3234 | by matching OLOAD_NAME. Make sure we read that symbol table in. */ |
c906108c SS |
3235 | |
3236 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b | 3237 | { |
d4f3574e SS |
3238 | struct partial_symbol **psym; |
3239 | ||
c5aa993b JM |
3240 | /* If the psymtab's been read in we'll get it when we search |
3241 | through the blockvector. */ | |
3242 | if (ps->readin) | |
3243 | continue; | |
3244 | ||
3245 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
3246 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
3247 | + ps->n_global_syms); | |
3248 | psym++) | |
3249 | { | |
3250 | /* If interrupted, then quit. */ | |
3251 | QUIT; | |
917317f4 JM |
3252 | /* This will cause the symbol table to be read if it has not yet been */ |
3253 | s = PSYMTAB_TO_SYMTAB (ps); | |
c5aa993b JM |
3254 | } |
3255 | ||
3256 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
3257 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
3258 | + ps->n_static_syms); | |
3259 | psym++) | |
3260 | { | |
3261 | QUIT; | |
917317f4 JM |
3262 | /* This will cause the symbol table to be read if it has not yet been */ |
3263 | s = PSYMTAB_TO_SYMTAB (ps); | |
c5aa993b JM |
3264 | } |
3265 | } | |
c906108c | 3266 | |
c906108c SS |
3267 | /* Search upwards from currently selected frame (so that we can |
3268 | complete on local vars. */ | |
3269 | ||
3270 | for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
3271 | { | |
3272 | if (!BLOCK_SUPERBLOCK (b)) | |
3273 | { | |
c5aa993b | 3274 | surrounding_static_block = b; /* For elimination of dups */ |
c906108c | 3275 | } |
c5aa993b | 3276 | |
c906108c | 3277 | /* Also catch fields of types defined in this places which match our |
c5aa993b | 3278 | text string. Only complete on types visible from current context. */ |
c906108c SS |
3279 | |
3280 | for (i = 0; i < BLOCK_NSYMS (b); i++) | |
3281 | { | |
3282 | sym = BLOCK_SYM (b, i); | |
3283 | overload_list_add_symbol (sym, oload_name); | |
3284 | } | |
3285 | } | |
3286 | ||
3287 | /* Go through the symtabs and check the externs and statics for | |
3288 | symbols which match. */ | |
3289 | ||
3290 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
3291 | { |
3292 | QUIT; | |
3293 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
3294 | for (i = 0; i < BLOCK_NSYMS (b); i++) | |
3295 | { | |
3296 | sym = BLOCK_SYM (b, i); | |
3297 | overload_list_add_symbol (sym, oload_name); | |
3298 | } | |
3299 | } | |
c906108c SS |
3300 | |
3301 | ALL_SYMTABS (objfile, s) | |
c5aa993b JM |
3302 | { |
3303 | QUIT; | |
3304 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
3305 | /* Don't do this block twice. */ | |
3306 | if (b == surrounding_static_block) | |
3307 | continue; | |
3308 | for (i = 0; i < BLOCK_NSYMS (b); i++) | |
3309 | { | |
3310 | sym = BLOCK_SYM (b, i); | |
3311 | overload_list_add_symbol (sym, oload_name); | |
3312 | } | |
3313 | } | |
c906108c | 3314 | |
b8c9b27d | 3315 | xfree (oload_name); |
c906108c SS |
3316 | |
3317 | return (sym_return_val); | |
3318 | } | |
3319 | ||
3320 | /* End of overload resolution functions */ | |
c906108c | 3321 | \f |
50641945 FN |
3322 | struct symtabs_and_lines |
3323 | decode_line_spec (char *string, int funfirstline) | |
3324 | { | |
3325 | struct symtabs_and_lines sals; | |
3326 | if (string == 0) | |
3327 | error ("Empty line specification."); | |
3328 | sals = decode_line_1 (&string, funfirstline, | |
3329 | current_source_symtab, current_source_line, | |
3330 | (char ***) NULL); | |
3331 | if (*string) | |
3332 | error ("Junk at end of line specification: %s", string); | |
3333 | return sals; | |
3334 | } | |
c5aa993b | 3335 | |
c906108c | 3336 | void |
fba45db2 | 3337 | _initialize_symtab (void) |
c906108c SS |
3338 | { |
3339 | add_info ("variables", variables_info, | |
c5aa993b | 3340 | "All global and static variable names, or those matching REGEXP."); |
c906108c | 3341 | if (dbx_commands) |
c5aa993b JM |
3342 | add_com ("whereis", class_info, variables_info, |
3343 | "All global and static variable names, or those matching REGEXP."); | |
c906108c SS |
3344 | |
3345 | add_info ("functions", functions_info, | |
3346 | "All function names, or those matching REGEXP."); | |
3347 | ||
357e46e7 | 3348 | |
c906108c SS |
3349 | /* FIXME: This command has at least the following problems: |
3350 | 1. It prints builtin types (in a very strange and confusing fashion). | |
3351 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
3352 | typedef struct foo *FOO |
3353 | type_print prints "FOO" when we want to make it (in this situation) | |
3354 | print "struct foo *". | |
c906108c SS |
3355 | I also think "ptype" or "whatis" is more likely to be useful (but if |
3356 | there is much disagreement "info types" can be fixed). */ | |
3357 | add_info ("types", types_info, | |
3358 | "All type names, or those matching REGEXP."); | |
3359 | ||
3360 | #if 0 | |
3361 | add_info ("methods", methods_info, | |
3362 | "All method names, or those matching REGEXP::REGEXP.\n\ | |
3363 | If the class qualifier is omitted, it is assumed to be the current scope.\n\ | |
3364 | If the first REGEXP is omitted, then all methods matching the second REGEXP\n\ | |
3365 | are listed."); | |
3366 | #endif | |
3367 | add_info ("sources", sources_info, | |
3368 | "Source files in the program."); | |
3369 | ||
3370 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
c5aa993b | 3371 | "Set a breakpoint for all functions matching REGEXP."); |
c906108c SS |
3372 | |
3373 | if (xdb_commands) | |
3374 | { | |
3375 | add_com ("lf", class_info, sources_info, "Source files in the program"); | |
3376 | add_com ("lg", class_info, variables_info, | |
c5aa993b | 3377 | "All global and static variable names, or those matching REGEXP."); |
c906108c SS |
3378 | } |
3379 | ||
3380 | /* Initialize the one built-in type that isn't language dependent... */ | |
3381 | builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0, | |
3382 | "<unknown type>", (struct objfile *) NULL); | |
3383 | } |