2002-10-23 Michael Snyder <msnyder@redhat.com>
[deliverable/binutils-gdb.git] / gdb / symtab.c
CommitLineData
c906108c 1/* Symbol table lookup for the GNU debugger, GDB.
8926118c
AC
2
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
5 Foundation, Inc.
c906108c 6
c5aa993b 7 This file is part of GDB.
c906108c 8
c5aa993b
JM
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
c906108c 13
c5aa993b
JM
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
c906108c 18
c5aa993b
JM
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
c906108c
SS
23
24#include "defs.h"
25#include "symtab.h"
26#include "gdbtypes.h"
27#include "gdbcore.h"
28#include "frame.h"
29#include "target.h"
30#include "value.h"
31#include "symfile.h"
32#include "objfiles.h"
33#include "gdbcmd.h"
34#include "call-cmds.h"
88987551 35#include "gdb_regex.h"
c906108c
SS
36#include "expression.h"
37#include "language.h"
38#include "demangle.h"
39#include "inferior.h"
c5f0f3d0 40#include "linespec.h"
0378c332 41#include "source.h"
a7fdf62f 42#include "filenames.h" /* for FILENAME_CMP */
c906108c 43
04ea0df1 44#include "gdb_obstack.h"
c906108c
SS
45
46#include <sys/types.h>
47#include <fcntl.h>
48#include "gdb_string.h"
49#include "gdb_stat.h"
50#include <ctype.h>
015a42b4 51#include "cp-abi.h"
c906108c
SS
52
53/* Prototype for one function in parser-defs.h,
54 instead of including that entire file. */
55
a14ed312 56extern char *find_template_name_end (char *);
c906108c
SS
57
58/* Prototypes for local functions */
59
a14ed312 60static void completion_list_add_name (char *, char *, int, char *, char *);
c906108c 61
a14ed312 62static void rbreak_command (char *, int);
c906108c 63
a14ed312 64static void types_info (char *, int);
c906108c 65
a14ed312 66static void functions_info (char *, int);
c906108c 67
a14ed312 68static void variables_info (char *, int);
c906108c 69
a14ed312 70static void sources_info (char *, int);
c906108c 71
a14ed312 72static void output_source_filename (char *, int *);
c906108c 73
a14ed312 74static int find_line_common (struct linetable *, int, int *);
c906108c 75
50641945
FN
76/* This one is used by linespec.c */
77
78char *operator_chars (char *p, char **end);
79
b37bcaa8
KB
80static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
81 const char *, int,
82 namespace_enum);
c906108c 83
3121eff0
DJ
84static struct symbol *lookup_symbol_aux (const char *name,
85 const char *mangled_name,
86 const struct block *block,
87 const namespace_enum namespace,
88 int *is_a_field_of_this,
89 struct symtab **symtab);
fba7f19c
EZ
90
91
a14ed312 92static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr);
c906108c
SS
93
94/* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
95/* Signals the presence of objects compiled by HP compilers */
96int hp_som_som_object_present = 0;
97
a14ed312 98static void fixup_section (struct general_symbol_info *, struct objfile *);
c906108c 99
a14ed312 100static int file_matches (char *, char **, int);
c906108c 101
a14ed312
KB
102static void print_symbol_info (namespace_enum,
103 struct symtab *, struct symbol *, int, char *);
c906108c 104
a14ed312 105static void print_msymbol_info (struct minimal_symbol *);
c906108c 106
a14ed312 107static void symtab_symbol_info (char *, namespace_enum, int);
c906108c 108
a14ed312 109static void overload_list_add_symbol (struct symbol *sym, char *oload_name);
392a587b 110
a14ed312 111void _initialize_symtab (void);
c906108c
SS
112
113/* */
114
115/* The single non-language-specific builtin type */
116struct type *builtin_type_error;
117
118/* Block in which the most recently searched-for symbol was found.
119 Might be better to make this a parameter to lookup_symbol and
120 value_of_this. */
121
122const struct block *block_found;
123
c906108c
SS
124/* While the C++ support is still in flux, issue a possibly helpful hint on
125 using the new command completion feature on single quoted demangled C++
126 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
127
128static void
fba45db2 129cplusplus_hint (char *name)
c906108c
SS
130{
131 while (*name == '\'')
132 name++;
133 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name);
134 printf_filtered ("(Note leading single quote.)\n");
135}
136
137/* Check for a symtab of a specific name; first in symtabs, then in
138 psymtabs. *If* there is no '/' in the name, a match after a '/'
139 in the symtab filename will also work. */
140
1b15f1fa
TT
141struct symtab *
142lookup_symtab (const char *name)
c906108c
SS
143{
144 register struct symtab *s;
145 register struct partial_symtab *ps;
c906108c 146 register struct objfile *objfile;
58d370e0 147 char *real_path = NULL;
f079a2e5 148 char *full_path = NULL;
58d370e0
TT
149
150 /* Here we are interested in canonicalizing an absolute path, not
151 absolutizing a relative path. */
152 if (IS_ABSOLUTE_PATH (name))
f079a2e5
JB
153 {
154 full_path = xfullpath (name);
155 make_cleanup (xfree, full_path);
156 real_path = gdb_realpath (name);
157 make_cleanup (xfree, real_path);
158 }
c906108c 159
c5aa993b 160got_symtab:
c906108c
SS
161
162 /* First, search for an exact match */
163
164 ALL_SYMTABS (objfile, s)
58d370e0 165 {
a7fdf62f 166 if (FILENAME_CMP (name, s->filename) == 0)
58d370e0 167 {
58d370e0
TT
168 return s;
169 }
f079a2e5 170
58d370e0
TT
171 /* If the user gave us an absolute path, try to find the file in
172 this symtab and use its absolute path. */
f079a2e5
JB
173
174 if (full_path != NULL)
175 {
176 const char *fp = symtab_to_filename (s);
177 if (FILENAME_CMP (full_path, fp) == 0)
178 {
179 return s;
180 }
181 }
182
58d370e0
TT
183 if (real_path != NULL)
184 {
25f1b008 185 char *rp = gdb_realpath (symtab_to_filename (s));
f079a2e5 186 make_cleanup (xfree, rp);
58d370e0
TT
187 if (FILENAME_CMP (real_path, rp) == 0)
188 {
58d370e0
TT
189 return s;
190 }
191 }
192 }
193
c906108c
SS
194 /* Now, search for a matching tail (only if name doesn't have any dirs) */
195
caadab2c 196 if (lbasename (name) == name)
c906108c 197 ALL_SYMTABS (objfile, s)
c5aa993b 198 {
31889e00 199 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
c5aa993b
JM
200 return s;
201 }
c906108c
SS
202
203 /* Same search rules as above apply here, but now we look thru the
204 psymtabs. */
205
206 ps = lookup_partial_symtab (name);
207 if (!ps)
208 return (NULL);
209
c5aa993b 210 if (ps->readin)
c906108c 211 error ("Internal: readin %s pst for `%s' found when no symtab found.",
c5aa993b 212 ps->filename, name);
c906108c
SS
213
214 s = PSYMTAB_TO_SYMTAB (ps);
215
216 if (s)
217 return s;
218
219 /* At this point, we have located the psymtab for this file, but
220 the conversion to a symtab has failed. This usually happens
221 when we are looking up an include file. In this case,
222 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
223 been created. So, we need to run through the symtabs again in
224 order to find the file.
225 XXX - This is a crock, and should be fixed inside of the the
226 symbol parsing routines. */
227 goto got_symtab;
228}
229
c906108c
SS
230/* Lookup the partial symbol table of a source file named NAME.
231 *If* there is no '/' in the name, a match after a '/'
232 in the psymtab filename will also work. */
233
234struct partial_symtab *
1f8cc6db 235lookup_partial_symtab (const char *name)
c906108c
SS
236{
237 register struct partial_symtab *pst;
238 register struct objfile *objfile;
f079a2e5 239 char *full_path = NULL;
58d370e0
TT
240 char *real_path = NULL;
241
242 /* Here we are interested in canonicalizing an absolute path, not
243 absolutizing a relative path. */
244 if (IS_ABSOLUTE_PATH (name))
f079a2e5
JB
245 {
246 full_path = xfullpath (name);
247 make_cleanup (xfree, full_path);
248 real_path = gdb_realpath (name);
249 make_cleanup (xfree, real_path);
250 }
c5aa993b 251
c906108c 252 ALL_PSYMTABS (objfile, pst)
c5aa993b 253 {
a7fdf62f 254 if (FILENAME_CMP (name, pst->filename) == 0)
c5aa993b
JM
255 {
256 return (pst);
257 }
f079a2e5 258
58d370e0
TT
259 /* If the user gave us an absolute path, try to find the file in
260 this symtab and use its absolute path. */
f079a2e5 261 if (full_path != NULL)
58d370e0
TT
262 {
263 if (pst->fullname == NULL)
264 source_full_path_of (pst->filename, &pst->fullname);
265 if (pst->fullname != NULL
f079a2e5 266 && FILENAME_CMP (full_path, pst->fullname) == 0)
58d370e0 267 {
58d370e0
TT
268 return pst;
269 }
270 }
c906108c 271
f079a2e5
JB
272 if (real_path != NULL)
273 {
274 char *rp = NULL;
275 if (pst->fullname == NULL)
276 source_full_path_of (pst->filename, &pst->fullname);
277 if (pst->fullname != NULL)
278 {
279 rp = gdb_realpath (pst->fullname);
280 make_cleanup (xfree, rp);
281 }
282 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
283 {
284 return pst;
285 }
286 }
287 }
58d370e0 288
c906108c
SS
289 /* Now, search for a matching tail (only if name doesn't have any dirs) */
290
caadab2c 291 if (lbasename (name) == name)
c906108c 292 ALL_PSYMTABS (objfile, pst)
c5aa993b 293 {
31889e00 294 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
c5aa993b
JM
295 return (pst);
296 }
c906108c
SS
297
298 return (NULL);
299}
300\f
301/* Mangle a GDB method stub type. This actually reassembles the pieces of the
302 full method name, which consist of the class name (from T), the unadorned
303 method name from METHOD_ID, and the signature for the specific overload,
304 specified by SIGNATURE_ID. Note that this function is g++ specific. */
305
306char *
fba45db2 307gdb_mangle_name (struct type *type, int method_id, int signature_id)
c906108c
SS
308{
309 int mangled_name_len;
310 char *mangled_name;
311 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
312 struct fn_field *method = &f[signature_id];
313 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
314 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
315 char *newname = type_name_no_tag (type);
316
317 /* Does the form of physname indicate that it is the full mangled name
318 of a constructor (not just the args)? */
319 int is_full_physname_constructor;
320
321 int is_constructor;
015a42b4 322 int is_destructor = is_destructor_name (physname);
c906108c
SS
323 /* Need a new type prefix. */
324 char *const_prefix = method->is_const ? "C" : "";
325 char *volatile_prefix = method->is_volatile ? "V" : "";
326 char buf[20];
327 int len = (newname == NULL ? 0 : strlen (newname));
328
43630227
PS
329 /* Nothing to do if physname already contains a fully mangled v3 abi name
330 or an operator name. */
331 if ((physname[0] == '_' && physname[1] == 'Z')
332 || is_operator_name (field_name))
235d1e03
EZ
333 return xstrdup (physname);
334
015a42b4 335 is_full_physname_constructor = is_constructor_name (physname);
c906108c
SS
336
337 is_constructor =
c5aa993b 338 is_full_physname_constructor || (newname && STREQ (field_name, newname));
c906108c
SS
339
340 if (!is_destructor)
c5aa993b 341 is_destructor = (strncmp (physname, "__dt", 4) == 0);
c906108c
SS
342
343 if (is_destructor || is_full_physname_constructor)
344 {
c5aa993b
JM
345 mangled_name = (char *) xmalloc (strlen (physname) + 1);
346 strcpy (mangled_name, physname);
c906108c
SS
347 return mangled_name;
348 }
349
350 if (len == 0)
351 {
352 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
353 }
354 else if (physname[0] == 't' || physname[0] == 'Q')
355 {
356 /* The physname for template and qualified methods already includes
c5aa993b 357 the class name. */
c906108c
SS
358 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
359 newname = NULL;
360 len = 0;
361 }
362 else
363 {
364 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
365 }
366 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
235d1e03 367 + strlen (buf) + len + strlen (physname) + 1);
c906108c 368
c906108c 369 {
c5aa993b 370 mangled_name = (char *) xmalloc (mangled_name_len);
c906108c
SS
371 if (is_constructor)
372 mangled_name[0] = '\0';
373 else
374 strcpy (mangled_name, field_name);
375 }
376 strcat (mangled_name, buf);
377 /* If the class doesn't have a name, i.e. newname NULL, then we just
378 mangle it using 0 for the length of the class. Thus it gets mangled
c5aa993b 379 as something starting with `::' rather than `classname::'. */
c906108c
SS
380 if (newname != NULL)
381 strcat (mangled_name, newname);
382
383 strcat (mangled_name, physname);
384 return (mangled_name);
385}
12af6855
JB
386
387\f
89aad1f9
EZ
388/* Initialize the language dependent portion of a symbol
389 depending upon the language for the symbol. */
390void
391symbol_init_language_specific (struct general_symbol_info *gsymbol,
392 enum language language)
393{
394 gsymbol->language = language;
395 if (gsymbol->language == language_cplus
396 || gsymbol->language == language_java)
397 {
398 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
399 }
400 else if (gsymbol->language == language_objc)
401 {
402 gsymbol->language_specific.objc_specific.demangled_name = NULL;
403 }
404 /* OBSOLETE else if (SYMBOL_LANGUAGE (symbol) == language_chill) */
405 /* OBSOLETE { */
406 /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; */
407 /* OBSOLETE } */
408 else
409 {
410 memset (&gsymbol->language_specific, 0,
411 sizeof (gsymbol->language_specific));
412 }
413}
414
12af6855
JB
415/* Initialize a symbol's mangled name. */
416
417/* Try to initialize the demangled name for a symbol, based on the
418 language of that symbol. If the language is set to language_auto,
419 it will attempt to find any demangling algorithm that works and
420 then set the language appropriately. If no demangling of any kind
421 is found, the language is set back to language_unknown, so we can
422 avoid doing this work again the next time we encounter the symbol.
423 Any required space to store the name is obtained from the specified
424 obstack. */
425
426void
427symbol_init_demangled_name (struct general_symbol_info *gsymbol,
428 struct obstack *obstack)
429{
430 char *mangled = gsymbol->name;
431 char *demangled = NULL;
432
433 if (gsymbol->language == language_unknown)
434 gsymbol->language = language_auto;
435 if (gsymbol->language == language_cplus
436 || gsymbol->language == language_auto)
437 {
438 demangled =
439 cplus_demangle (gsymbol->name, DMGL_PARAMS | DMGL_ANSI);
440 if (demangled != NULL)
441 {
442 gsymbol->language = language_cplus;
443 gsymbol->language_specific.cplus_specific.demangled_name =
444 obsavestring (demangled, strlen (demangled), obstack);
445 xfree (demangled);
446 }
447 else
448 {
449 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
450 }
451 }
452 if (gsymbol->language == language_java)
453 {
454 demangled =
455 cplus_demangle (gsymbol->name,
456 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
457 if (demangled != NULL)
458 {
459 gsymbol->language = language_java;
460 gsymbol->language_specific.cplus_specific.demangled_name =
461 obsavestring (demangled, strlen (demangled), obstack);
462 xfree (demangled);
463 }
464 else
465 {
466 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
467 }
468 }
db034ac5
AC
469#if 0
470 /* OBSOLETE if (demangled == NULL */
471 /* OBSOLETE && (gsymbol->language == language_chill */
472 /* OBSOLETE || gsymbol->language == language_auto)) */
473 /* OBSOLETE { */
474 /* OBSOLETE demangled = */
475 /* OBSOLETE chill_demangle (gsymbol->name); */
476 /* OBSOLETE if (demangled != NULL) */
477 /* OBSOLETE { */
478 /* OBSOLETE gsymbol->language = language_chill; */
479 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = */
480 /* OBSOLETE obsavestring (demangled, strlen (demangled), obstack); */
481 /* OBSOLETE xfree (demangled); */
482 /* OBSOLETE } */
483 /* OBSOLETE else */
484 /* OBSOLETE { */
485 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = NULL; */
486 /* OBSOLETE } */
487 /* OBSOLETE } */
488#endif
12af6855
JB
489}
490
491
c906108c
SS
492\f
493
c5aa993b 494
c906108c
SS
495/* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
496
497struct partial_symtab *
fba45db2 498find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
c906108c
SS
499{
500 register struct partial_symtab *pst;
501 register struct objfile *objfile;
8a48e967
DJ
502 struct minimal_symbol *msymbol;
503
504 /* If we know that this is not a text address, return failure. This is
505 necessary because we loop based on texthigh and textlow, which do
506 not include the data ranges. */
507 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
508 if (msymbol
509 && (msymbol->type == mst_data
510 || msymbol->type == mst_bss
511 || msymbol->type == mst_abs
512 || msymbol->type == mst_file_data
513 || msymbol->type == mst_file_bss))
514 return NULL;
c906108c
SS
515
516 ALL_PSYMTABS (objfile, pst)
c5aa993b 517 {
c5aa993b 518 if (pc >= pst->textlow && pc < pst->texthigh)
c5aa993b 519 {
c5aa993b
JM
520 struct partial_symtab *tpst;
521
522 /* An objfile that has its functions reordered might have
523 many partial symbol tables containing the PC, but
524 we want the partial symbol table that contains the
525 function containing the PC. */
526 if (!(objfile->flags & OBJF_REORDERED) &&
527 section == 0) /* can't validate section this way */
528 return (pst);
529
c5aa993b
JM
530 if (msymbol == NULL)
531 return (pst);
532
533 for (tpst = pst; tpst != NULL; tpst = tpst->next)
534 {
c5aa993b 535 if (pc >= tpst->textlow && pc < tpst->texthigh)
c5aa993b
JM
536 {
537 struct partial_symbol *p;
c906108c 538
c5aa993b
JM
539 p = find_pc_sect_psymbol (tpst, pc, section);
540 if (p != NULL
541 && SYMBOL_VALUE_ADDRESS (p)
542 == SYMBOL_VALUE_ADDRESS (msymbol))
543 return (tpst);
544 }
545 }
546 return (pst);
547 }
548 }
c906108c
SS
549 return (NULL);
550}
551
552/* Find which partial symtab contains PC. Return 0 if none.
553 Backward compatibility, no section */
554
555struct partial_symtab *
fba45db2 556find_pc_psymtab (CORE_ADDR pc)
c906108c
SS
557{
558 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
559}
560
561/* Find which partial symbol within a psymtab matches PC and SECTION.
562 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
563
564struct partial_symbol *
fba45db2
KB
565find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
566 asection *section)
c906108c
SS
567{
568 struct partial_symbol *best = NULL, *p, **pp;
569 CORE_ADDR best_pc;
c5aa993b 570
c906108c
SS
571 if (!psymtab)
572 psymtab = find_pc_sect_psymtab (pc, section);
573 if (!psymtab)
574 return 0;
575
576 /* Cope with programs that start at address 0 */
577 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
578
579 /* Search the global symbols as well as the static symbols, so that
580 find_pc_partial_function doesn't use a minimal symbol and thus
581 cache a bad endaddr. */
582 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
c5aa993b
JM
583 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
584 < psymtab->n_global_syms);
c906108c
SS
585 pp++)
586 {
587 p = *pp;
588 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
589 && SYMBOL_CLASS (p) == LOC_BLOCK
590 && pc >= SYMBOL_VALUE_ADDRESS (p)
591 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
592 || (psymtab->textlow == 0
593 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
594 {
c5aa993b 595 if (section) /* match on a specific section */
c906108c
SS
596 {
597 fixup_psymbol_section (p, psymtab->objfile);
598 if (SYMBOL_BFD_SECTION (p) != section)
599 continue;
600 }
601 best_pc = SYMBOL_VALUE_ADDRESS (p);
602 best = p;
603 }
604 }
605
606 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
c5aa993b
JM
607 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
608 < psymtab->n_static_syms);
c906108c
SS
609 pp++)
610 {
611 p = *pp;
612 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
613 && SYMBOL_CLASS (p) == LOC_BLOCK
614 && pc >= SYMBOL_VALUE_ADDRESS (p)
615 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
c5aa993b 616 || (psymtab->textlow == 0
c906108c
SS
617 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
618 {
c5aa993b 619 if (section) /* match on a specific section */
c906108c
SS
620 {
621 fixup_psymbol_section (p, psymtab->objfile);
622 if (SYMBOL_BFD_SECTION (p) != section)
623 continue;
624 }
625 best_pc = SYMBOL_VALUE_ADDRESS (p);
626 best = p;
627 }
628 }
629
630 return best;
631}
632
633/* Find which partial symbol within a psymtab matches PC. Return 0 if none.
634 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
635
636struct partial_symbol *
fba45db2 637find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
c906108c
SS
638{
639 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
640}
641\f
642/* Debug symbols usually don't have section information. We need to dig that
643 out of the minimal symbols and stash that in the debug symbol. */
644
645static void
fba45db2 646fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
c906108c
SS
647{
648 struct minimal_symbol *msym;
649 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
650
651 if (msym)
7a78d0ee
KB
652 {
653 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
654 ginfo->section = SYMBOL_SECTION (msym);
655 }
c906108c
SS
656}
657
658struct symbol *
fba45db2 659fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
c906108c
SS
660{
661 if (!sym)
662 return NULL;
663
664 if (SYMBOL_BFD_SECTION (sym))
665 return sym;
666
667 fixup_section (&sym->ginfo, objfile);
668
669 return sym;
670}
671
7a78d0ee 672struct partial_symbol *
fba45db2 673fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
c906108c
SS
674{
675 if (!psym)
676 return NULL;
677
678 if (SYMBOL_BFD_SECTION (psym))
679 return psym;
680
681 fixup_section (&psym->ginfo, objfile);
682
683 return psym;
684}
685
686/* Find the definition for a specified symbol name NAME
687 in namespace NAMESPACE, visible from lexical block BLOCK.
688 Returns the struct symbol pointer, or zero if no symbol is found.
689 If SYMTAB is non-NULL, store the symbol table in which the
690 symbol was found there, or NULL if not found.
691 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
692 NAME is a field of the current implied argument `this'. If so set
693 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
694 BLOCK_FOUND is set to the block in which NAME is found (in the case of
695 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
696
697/* This function has a bunch of loops in it and it would seem to be
698 attractive to put in some QUIT's (though I'm not really sure
699 whether it can run long enough to be really important). But there
700 are a few calls for which it would appear to be bad news to quit
701 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
702 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
703 code below which can error(), but that probably doesn't affect
704 these calls since they are looking for a known variable and thus
705 can probably assume it will never hit the C++ code). */
706
707struct symbol *
fba7f19c 708lookup_symbol (const char *name, const struct block *block,
fba45db2
KB
709 const namespace_enum namespace, int *is_a_field_of_this,
710 struct symtab **symtab)
c906108c 711{
729051e6
DJ
712 char *demangled_name = NULL;
713 const char *modified_name = NULL;
3121eff0 714 const char *mangled_name = NULL;
fba7f19c
EZ
715 int needtofreename = 0;
716 struct symbol *returnval;
c906108c 717
729051e6
DJ
718 modified_name = name;
719
720 /* If we are using C++ language, demangle the name before doing a lookup, so
721 we can always binary search. */
722 if (current_language->la_language == language_cplus)
723 {
724 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
725 if (demangled_name)
726 {
727 mangled_name = name;
728 modified_name = demangled_name;
729 needtofreename = 1;
730 }
731 }
732
63872f9d
JG
733 if (case_sensitivity == case_sensitive_off)
734 {
735 char *copy;
736 int len, i;
737
738 len = strlen (name);
739 copy = (char *) alloca (len + 1);
740 for (i= 0; i < len; i++)
741 copy[i] = tolower (name[i]);
742 copy[len] = 0;
fba7f19c 743 modified_name = copy;
63872f9d 744 }
fba7f19c 745
3121eff0
DJ
746 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
747 namespace, is_a_field_of_this, symtab);
fba7f19c 748 if (needtofreename)
729051e6 749 xfree (demangled_name);
fba7f19c
EZ
750
751 return returnval;
752}
753
754static struct symbol *
3121eff0
DJ
755lookup_symbol_aux (const char *name, const char *mangled_name,
756 const struct block *block, const namespace_enum namespace,
757 int *is_a_field_of_this, struct symtab **symtab)
fba7f19c
EZ
758{
759 register struct symbol *sym;
760 register struct symtab *s = NULL;
761 register struct partial_symtab *ps;
762 register struct blockvector *bv;
763 register struct objfile *objfile = NULL;
764 register struct block *b;
765 register struct minimal_symbol *msymbol;
766
63872f9d 767
c906108c
SS
768 /* Search specified block and its superiors. */
769
770 while (block != 0)
771 {
3121eff0 772 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b 773 if (sym)
c906108c
SS
774 {
775 block_found = block;
776 if (symtab != NULL)
777 {
778 /* Search the list of symtabs for one which contains the
c5aa993b 779 address of the start of this block. */
c906108c 780 ALL_SYMTABS (objfile, s)
c5aa993b
JM
781 {
782 bv = BLOCKVECTOR (s);
783 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
784 if (BLOCK_START (b) <= BLOCK_START (block)
785 && BLOCK_END (b) > BLOCK_START (block))
786 goto found;
787 }
788 found:
c906108c
SS
789 *symtab = s;
790 }
791
792 return fixup_symbol_section (sym, objfile);
793 }
794 block = BLOCK_SUPERBLOCK (block);
795 }
796
797 /* FIXME: this code is never executed--block is always NULL at this
798 point. What is it trying to do, anyway? We already should have
799 checked the STATIC_BLOCK above (it is the superblock of top-level
800 blocks). Why is VAR_NAMESPACE special-cased? */
801 /* Don't need to mess with the psymtabs; if we have a block,
802 that file is read in. If we don't, then we deal later with
803 all the psymtab stuff that needs checking. */
804 /* Note (RT): The following never-executed code looks unnecessary to me also.
805 * If we change the code to use the original (passed-in)
806 * value of 'block', we could cause it to execute, but then what
807 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
808 * 'block' was already searched by the above code. And the STATIC_BLOCK's
809 * of *other* symtabs (those files not containing 'block' lexically)
810 * should not contain 'block' address-wise. So we wouldn't expect this
811 * code to find any 'sym''s that were not found above. I vote for
812 * deleting the following paragraph of code.
813 */
814 if (namespace == VAR_NAMESPACE && block != NULL)
815 {
816 struct block *b;
817 /* Find the right symtab. */
818 ALL_SYMTABS (objfile, s)
c5aa993b
JM
819 {
820 bv = BLOCKVECTOR (s);
821 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
822 if (BLOCK_START (b) <= BLOCK_START (block)
823 && BLOCK_END (b) > BLOCK_START (block))
824 {
3121eff0 825 sym = lookup_block_symbol (b, name, mangled_name, VAR_NAMESPACE);
c5aa993b
JM
826 if (sym)
827 {
828 block_found = b;
829 if (symtab != NULL)
830 *symtab = s;
831 return fixup_symbol_section (sym, objfile);
832 }
833 }
834 }
c906108c
SS
835 }
836
837
838 /* C++: If requested to do so by the caller,
839 check to see if NAME is a field of `this'. */
840 if (is_a_field_of_this)
841 {
842 struct value *v = value_of_this (0);
c5aa993b 843
c906108c
SS
844 *is_a_field_of_this = 0;
845 if (v && check_field (v, name))
846 {
847 *is_a_field_of_this = 1;
848 if (symtab != NULL)
849 *symtab = NULL;
850 return NULL;
851 }
852 }
853
854 /* Now search all global blocks. Do the symtab's first, then
855 check the psymtab's. If a psymtab indicates the existence
856 of the desired name as a global, then do psymtab-to-symtab
857 conversion on the fly and return the found symbol. */
c5aa993b 858
c906108c 859 ALL_SYMTABS (objfile, s)
c5aa993b
JM
860 {
861 bv = BLOCKVECTOR (s);
862 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
3121eff0 863 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
864 if (sym)
865 {
866 block_found = block;
867 if (symtab != NULL)
868 *symtab = s;
869 return fixup_symbol_section (sym, objfile);
870 }
871 }
c906108c
SS
872
873#ifndef HPUXHPPA
874
875 /* Check for the possibility of the symbol being a function or
876 a mangled variable that is stored in one of the minimal symbol tables.
877 Eventually, all global symbols might be resolved in this way. */
c5aa993b 878
c906108c
SS
879 if (namespace == VAR_NAMESPACE)
880 {
881 msymbol = lookup_minimal_symbol (name, NULL, NULL);
882 if (msymbol != NULL)
883 {
884 s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
c5aa993b 885 SYMBOL_BFD_SECTION (msymbol));
c906108c
SS
886 if (s != NULL)
887 {
888 /* This is a function which has a symtab for its address. */
889 bv = BLOCKVECTOR (s);
890 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
c7612d53
JB
891
892 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
893 `name' argument to lookup_block_symbol. But the name
894 of a minimal symbol is always mangled, so that seems
895 to be clearly the wrong thing to pass as the
896 unmangled name. */
897 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
898 /* We kept static functions in minimal symbol table as well as
899 in static scope. We want to find them in the symbol table. */
900 if (!sym)
901 {
c906108c 902 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
c7612d53
JB
903 sym = lookup_block_symbol (block, name,
904 mangled_name, namespace);
c906108c
SS
905 }
906
907 /* sym == 0 if symbol was found in the minimal symbol table
c5aa993b
JM
908 but not in the symtab.
909 Return 0 to use the msymbol definition of "foo_".
c906108c 910
c5aa993b
JM
911 This happens for Fortran "foo_" symbols,
912 which are "foo" in the symtab.
c906108c 913
c5aa993b
JM
914 This can also happen if "asm" is used to make a
915 regular symbol but not a debugging symbol, e.g.
916 asm(".globl _main");
917 asm("_main:");
918 */
c906108c
SS
919
920 if (symtab != NULL)
921 *symtab = s;
922 return fixup_symbol_section (sym, objfile);
923 }
924 else if (MSYMBOL_TYPE (msymbol) != mst_text
925 && MSYMBOL_TYPE (msymbol) != mst_file_text
926 && !STREQ (name, SYMBOL_NAME (msymbol)))
927 {
928 /* This is a mangled variable, look it up by its
c5aa993b 929 mangled name. */
3121eff0 930 return lookup_symbol_aux (SYMBOL_NAME (msymbol), mangled_name, block,
5dbd9048 931 namespace, is_a_field_of_this, symtab);
c906108c
SS
932 }
933 /* There are no debug symbols for this file, or we are looking
934 for an unmangled variable.
935 Try to find a matching static symbol below. */
936 }
937 }
c5aa993b 938
c906108c
SS
939#endif
940
941 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
942 {
943 if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace))
944 {
945 s = PSYMTAB_TO_SYMTAB (ps);
946 bv = BLOCKVECTOR (s);
947 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
3121eff0 948 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
949 if (!sym)
950 {
951 /* This shouldn't be necessary, but as a last resort
952 * try looking in the statics even though the psymtab
953 * claimed the symbol was global. It's possible that
954 * the psymtab gets it wrong in some cases.
955 */
956 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
3121eff0 957 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
958 if (!sym)
959 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
c906108c
SS
960%s may be an inlined function, or may be a template function\n\
961(if a template, try specifying an instantiation: %s<type>).",
c5aa993b
JM
962 name, ps->filename, name, name);
963 }
964 if (symtab != NULL)
965 *symtab = s;
966 return fixup_symbol_section (sym, objfile);
967 }
968 }
c906108c
SS
969
970 /* Now search all static file-level symbols.
971 Not strictly correct, but more useful than an error.
972 Do the symtabs first, then check the psymtabs.
973 If a psymtab indicates the existence
974 of the desired name as a file-level static, then do psymtab-to-symtab
975 conversion on the fly and return the found symbol. */
976
977 ALL_SYMTABS (objfile, s)
c5aa993b
JM
978 {
979 bv = BLOCKVECTOR (s);
980 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
3121eff0 981 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
982 if (sym)
983 {
984 block_found = block;
985 if (symtab != NULL)
986 *symtab = s;
987 return fixup_symbol_section (sym, objfile);
988 }
989 }
c906108c
SS
990
991 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
992 {
993 if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace))
994 {
995 s = PSYMTAB_TO_SYMTAB (ps);
996 bv = BLOCKVECTOR (s);
997 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
3121eff0 998 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
999 if (!sym)
1000 {
1001 /* This shouldn't be necessary, but as a last resort
1002 * try looking in the globals even though the psymtab
1003 * claimed the symbol was static. It's possible that
1004 * the psymtab gets it wrong in some cases.
1005 */
1006 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
3121eff0 1007 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
1008 if (!sym)
1009 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
c906108c
SS
1010%s may be an inlined function, or may be a template function\n\
1011(if a template, try specifying an instantiation: %s<type>).",
c5aa993b
JM
1012 name, ps->filename, name, name);
1013 }
1014 if (symtab != NULL)
1015 *symtab = s;
1016 return fixup_symbol_section (sym, objfile);
1017 }
1018 }
c906108c
SS
1019
1020#ifdef HPUXHPPA
1021
1022 /* Check for the possibility of the symbol being a function or
1023 a global variable that is stored in one of the minimal symbol tables.
1024 The "minimal symbol table" is built from linker-supplied info.
1025
1026 RT: I moved this check to last, after the complete search of
1027 the global (p)symtab's and static (p)symtab's. For HP-generated
1028 symbol tables, this check was causing a premature exit from
1029 lookup_symbol with NULL return, and thus messing up symbol lookups
1030 of things like "c::f". It seems to me a check of the minimal
1031 symbol table ought to be a last resort in any case. I'm vaguely
1032 worried about the comment below which talks about FORTRAN routines "foo_"
1033 though... is it saying we need to do the "minsym" check before
1034 the static check in this case?
1035 */
c5aa993b 1036
c906108c
SS
1037 if (namespace == VAR_NAMESPACE)
1038 {
1039 msymbol = lookup_minimal_symbol (name, NULL, NULL);
1040 if (msymbol != NULL)
1041 {
c5aa993b
JM
1042 /* OK, we found a minimal symbol in spite of not
1043 * finding any symbol. There are various possible
1044 * explanations for this. One possibility is the symbol
1045 * exists in code not compiled -g. Another possibility
1046 * is that the 'psymtab' isn't doing its job.
1047 * A third possibility, related to #2, is that we were confused
1048 * by name-mangling. For instance, maybe the psymtab isn't
1049 * doing its job because it only know about demangled
1050 * names, but we were given a mangled name...
1051 */
1052
1053 /* We first use the address in the msymbol to try to
1054 * locate the appropriate symtab. Note that find_pc_symtab()
1055 * has a side-effect of doing psymtab-to-symtab expansion,
1056 * for the found symtab.
1057 */
c906108c
SS
1058 s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol));
1059 if (s != NULL)
1060 {
1061 bv = BLOCKVECTOR (s);
1062 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
c7612d53
JB
1063 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
1064 `name' argument to lookup_block_symbol. But the name
1065 of a minimal symbol is always mangled, so that seems
1066 to be clearly the wrong thing to pass as the
1067 unmangled name. */
1068 sym = lookup_block_symbol (block, name, mangled_name, namespace);
c5aa993b
JM
1069 /* We kept static functions in minimal symbol table as well as
1070 in static scope. We want to find them in the symbol table. */
1071 if (!sym)
1072 {
c906108c 1073 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
c7612d53
JB
1074 sym = lookup_block_symbol (block, name,
1075 mangled_name, namespace);
c906108c 1076 }
c5aa993b
JM
1077 /* If we found one, return it */
1078 if (sym)
1079 {
1080 if (symtab != NULL)
1081 *symtab = s;
1082 return sym;
1083 }
c906108c
SS
1084
1085 /* If we get here with sym == 0, the symbol was
c5aa993b
JM
1086 found in the minimal symbol table
1087 but not in the symtab.
1088 Fall through and return 0 to use the msymbol
1089 definition of "foo_".
1090 (Note that outer code generally follows up a call
1091 to this routine with a call to lookup_minimal_symbol(),
1092 so a 0 return means we'll just flow into that other routine).
1093
1094 This happens for Fortran "foo_" symbols,
1095 which are "foo" in the symtab.
1096
1097 This can also happen if "asm" is used to make a
1098 regular symbol but not a debugging symbol, e.g.
1099 asm(".globl _main");
1100 asm("_main:");
1101 */
c906108c
SS
1102 }
1103
c5aa993b
JM
1104 /* If the lookup-by-address fails, try repeating the
1105 * entire lookup process with the symbol name from
1106 * the msymbol (if different from the original symbol name).
1107 */
c906108c
SS
1108 else if (MSYMBOL_TYPE (msymbol) != mst_text
1109 && MSYMBOL_TYPE (msymbol) != mst_file_text
1110 && !STREQ (name, SYMBOL_NAME (msymbol)))
1111 {
3121eff0
DJ
1112 return lookup_symbol_aux (SYMBOL_NAME (msymbol), mangled_name,
1113 block, namespace, is_a_field_of_this,
1114 symtab);
c906108c
SS
1115 }
1116 }
1117 }
1118
1119#endif
1120
1121 if (symtab != NULL)
1122 *symtab = NULL;
1123 return 0;
1124}
357e46e7 1125
c906108c
SS
1126/* Look, in partial_symtab PST, for symbol NAME. Check the global
1127 symbols if GLOBAL, the static symbols if not */
1128
1129static struct partial_symbol *
fba45db2
KB
1130lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global,
1131 namespace_enum namespace)
c906108c 1132{
357e46e7 1133 struct partial_symbol *temp;
c906108c
SS
1134 struct partial_symbol **start, **psym;
1135 struct partial_symbol **top, **bottom, **center;
1136 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1137 int do_linear_search = 1;
357e46e7 1138
c906108c
SS
1139 if (length == 0)
1140 {
1141 return (NULL);
1142 }
c906108c
SS
1143 start = (global ?
1144 pst->objfile->global_psymbols.list + pst->globals_offset :
c5aa993b 1145 pst->objfile->static_psymbols.list + pst->statics_offset);
357e46e7 1146
c5aa993b 1147 if (global) /* This means we can use a binary search. */
c906108c
SS
1148 {
1149 do_linear_search = 0;
1150
1151 /* Binary search. This search is guaranteed to end with center
1152 pointing at the earliest partial symbol with the correct
c5aa993b
JM
1153 name. At that point *all* partial symbols with that name
1154 will be checked against the correct namespace. */
c906108c
SS
1155
1156 bottom = start;
1157 top = start + length - 1;
1158 while (top > bottom)
1159 {
1160 center = bottom + (top - bottom) / 2;
1161 if (!(center < top))
e1e9e218 1162 internal_error (__FILE__, __LINE__, "failed internal consistency check");
c906108c 1163 if (!do_linear_search
357e46e7 1164 && (SYMBOL_LANGUAGE (*center) == language_java))
c906108c
SS
1165 {
1166 do_linear_search = 1;
1167 }
494b7ec9 1168 if (strcmp (SYMBOL_SOURCE_NAME (*center), name) >= 0)
c906108c
SS
1169 {
1170 top = center;
1171 }
1172 else
1173 {
1174 bottom = center + 1;
1175 }
1176 }
1177 if (!(top == bottom))
e1e9e218 1178 internal_error (__FILE__, __LINE__, "failed internal consistency check");
357e46e7
DB
1179
1180 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1181 we don't have to force a linear search on C++. Probably holds true
1182 for JAVA as well, no way to check.*/
1183 while (SYMBOL_MATCHES_NAME (*top,name))
c906108c
SS
1184 {
1185 if (SYMBOL_NAMESPACE (*top) == namespace)
1186 {
357e46e7 1187 return (*top);
c906108c 1188 }
c5aa993b 1189 top++;
c906108c
SS
1190 }
1191 }
1192
1193 /* Can't use a binary search or else we found during the binary search that
1194 we should also do a linear search. */
1195
1196 if (do_linear_search)
357e46e7 1197 {
c906108c
SS
1198 for (psym = start; psym < start + length; psym++)
1199 {
1200 if (namespace == SYMBOL_NAMESPACE (*psym))
1201 {
1202 if (SYMBOL_MATCHES_NAME (*psym, name))
1203 {
1204 return (*psym);
1205 }
1206 }
1207 }
1208 }
1209
1210 return (NULL);
1211}
1212
1213/* Look up a type named NAME in the struct_namespace. The type returned
1214 must not be opaque -- i.e., must have at least one field defined
1215
1216 This code was modelled on lookup_symbol -- the parts not relevant to looking
1217 up types were just left out. In particular it's assumed here that types
1218 are available in struct_namespace and only at file-static or global blocks. */
1219
1220
1221struct type *
fba45db2 1222lookup_transparent_type (const char *name)
c906108c
SS
1223{
1224 register struct symbol *sym;
1225 register struct symtab *s = NULL;
1226 register struct partial_symtab *ps;
1227 struct blockvector *bv;
1228 register struct objfile *objfile;
1229 register struct block *block;
c906108c
SS
1230
1231 /* Now search all the global symbols. Do the symtab's first, then
1232 check the psymtab's. If a psymtab indicates the existence
1233 of the desired name as a global, then do psymtab-to-symtab
1234 conversion on the fly and return the found symbol. */
c5aa993b 1235
c906108c 1236 ALL_SYMTABS (objfile, s)
c5aa993b
JM
1237 {
1238 bv = BLOCKVECTOR (s);
1239 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
3121eff0 1240 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
c5aa993b
JM
1241 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1242 {
1243 return SYMBOL_TYPE (sym);
1244 }
1245 }
c906108c
SS
1246
1247 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
1248 {
1249 if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE))
1250 {
1251 s = PSYMTAB_TO_SYMTAB (ps);
1252 bv = BLOCKVECTOR (s);
1253 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
3121eff0 1254 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
c5aa993b
JM
1255 if (!sym)
1256 {
1257 /* This shouldn't be necessary, but as a last resort
1258 * try looking in the statics even though the psymtab
1259 * claimed the symbol was global. It's possible that
1260 * the psymtab gets it wrong in some cases.
1261 */
1262 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
3121eff0 1263 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
c5aa993b
JM
1264 if (!sym)
1265 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
c906108c
SS
1266%s may be an inlined function, or may be a template function\n\
1267(if a template, try specifying an instantiation: %s<type>).",
c5aa993b
JM
1268 name, ps->filename, name, name);
1269 }
1270 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1271 return SYMBOL_TYPE (sym);
1272 }
1273 }
c906108c
SS
1274
1275 /* Now search the static file-level symbols.
1276 Not strictly correct, but more useful than an error.
1277 Do the symtab's first, then
1278 check the psymtab's. If a psymtab indicates the existence
1279 of the desired name as a file-level static, then do psymtab-to-symtab
1280 conversion on the fly and return the found symbol.
1281 */
1282
1283 ALL_SYMTABS (objfile, s)
c5aa993b
JM
1284 {
1285 bv = BLOCKVECTOR (s);
1286 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
3121eff0 1287 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
c5aa993b
JM
1288 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1289 {
1290 return SYMBOL_TYPE (sym);
1291 }
1292 }
c906108c
SS
1293
1294 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
1295 {
1296 if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE))
1297 {
1298 s = PSYMTAB_TO_SYMTAB (ps);
1299 bv = BLOCKVECTOR (s);
1300 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
3121eff0 1301 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
c5aa993b
JM
1302 if (!sym)
1303 {
1304 /* This shouldn't be necessary, but as a last resort
1305 * try looking in the globals even though the psymtab
1306 * claimed the symbol was static. It's possible that
1307 * the psymtab gets it wrong in some cases.
1308 */
1309 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
3121eff0 1310 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
c5aa993b
JM
1311 if (!sym)
1312 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
c906108c
SS
1313%s may be an inlined function, or may be a template function\n\
1314(if a template, try specifying an instantiation: %s<type>).",
c5aa993b
JM
1315 name, ps->filename, name, name);
1316 }
1317 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1318 return SYMBOL_TYPE (sym);
1319 }
1320 }
c906108c
SS
1321 return (struct type *) 0;
1322}
1323
1324
1325/* Find the psymtab containing main(). */
1326/* FIXME: What about languages without main() or specially linked
1327 executables that have no main() ? */
1328
1329struct partial_symtab *
fba45db2 1330find_main_psymtab (void)
c906108c
SS
1331{
1332 register struct partial_symtab *pst;
1333 register struct objfile *objfile;
1334
1335 ALL_PSYMTABS (objfile, pst)
c5aa993b 1336 {
51cc5b07 1337 if (lookup_partial_symbol (pst, main_name (), 1, VAR_NAMESPACE))
c5aa993b
JM
1338 {
1339 return (pst);
1340 }
1341 }
c906108c
SS
1342 return (NULL);
1343}
1344
1345/* Search BLOCK for symbol NAME in NAMESPACE.
1346
1347 Note that if NAME is the demangled form of a C++ symbol, we will fail
1348 to find a match during the binary search of the non-encoded names, but
1349 for now we don't worry about the slight inefficiency of looking for
1350 a match we'll never find, since it will go pretty quick. Once the
1351 binary search terminates, we drop through and do a straight linear
1352 search on the symbols. Each symbol which is marked as being a C++
1353 symbol (language_cplus set) has both the encoded and non-encoded names
3121eff0
DJ
1354 tested for a match.
1355
1356 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1357 particular mangled name.
1358*/
c906108c
SS
1359
1360struct symbol *
fba45db2 1361lookup_block_symbol (register const struct block *block, const char *name,
3121eff0 1362 const char *mangled_name,
fba45db2 1363 const namespace_enum namespace)
c906108c
SS
1364{
1365 register int bot, top, inc;
1366 register struct symbol *sym;
1367 register struct symbol *sym_found = NULL;
1368 register int do_linear_search = 1;
1369
261397f8
DJ
1370 if (BLOCK_HASHTABLE (block))
1371 {
1372 unsigned int hash_index;
1373 hash_index = msymbol_hash_iw (name);
1374 hash_index = hash_index % BLOCK_BUCKETS (block);
1375 for (sym = BLOCK_BUCKET (block, hash_index); sym; sym = sym->hash_next)
1376 {
1377 if (SYMBOL_NAMESPACE (sym) == namespace
1378 && (mangled_name
1379 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1380 : SYMBOL_MATCHES_NAME (sym, name)))
1381 return sym;
1382 }
1383 return NULL;
1384 }
1385
c906108c
SS
1386 /* If the blocks's symbols were sorted, start with a binary search. */
1387
1388 if (BLOCK_SHOULD_SORT (block))
1389 {
1390 /* Reset the linear search flag so if the binary search fails, we
c5aa993b 1391 won't do the linear search once unless we find some reason to
fba7f19c 1392 do so */
c906108c
SS
1393
1394 do_linear_search = 0;
1395 top = BLOCK_NSYMS (block);
1396 bot = 0;
1397
1398 /* Advance BOT to not far before the first symbol whose name is NAME. */
1399
1400 while (1)
1401 {
1402 inc = (top - bot + 1);
1403 /* No need to keep binary searching for the last few bits worth. */
1404 if (inc < 4)
1405 {
1406 break;
1407 }
1408 inc = (inc >> 1) + bot;
1409 sym = BLOCK_SYM (block, inc);
fba7f19c 1410 if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java))
c906108c
SS
1411 {
1412 do_linear_search = 1;
1413 }
fba7f19c 1414 if (SYMBOL_SOURCE_NAME (sym)[0] < name[0])
c906108c
SS
1415 {
1416 bot = inc;
1417 }
fba7f19c 1418 else if (SYMBOL_SOURCE_NAME (sym)[0] > name[0])
c906108c
SS
1419 {
1420 top = inc;
1421 }
494b7ec9 1422 else if (strcmp (SYMBOL_SOURCE_NAME (sym), name) < 0)
c906108c
SS
1423 {
1424 bot = inc;
1425 }
1426 else
1427 {
1428 top = inc;
1429 }
1430 }
1431
1432 /* Now scan forward until we run out of symbols, find one whose
c5aa993b
JM
1433 name is greater than NAME, or find one we want. If there is
1434 more than one symbol with the right name and namespace, we
1435 return the first one; I believe it is now impossible for us
1436 to encounter two symbols with the same name and namespace
1437 here, because blocks containing argument symbols are no
3121eff0
DJ
1438 longer sorted. The exception is for C++, where multiple functions
1439 (cloned constructors / destructors, in particular) can have
1440 the same demangled name. So if we have a particular
1441 mangled name to match, try to do so. */
c906108c
SS
1442
1443 top = BLOCK_NSYMS (block);
1444 while (bot < top)
1445 {
1446 sym = BLOCK_SYM (block, bot);
3121eff0
DJ
1447 if (SYMBOL_NAMESPACE (sym) == namespace
1448 && (mangled_name
1449 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1450 : SYMBOL_MATCHES_NAME (sym, name)))
c9049fc9
MC
1451 {
1452 return sym;
1453 }
1ba7c32c
JM
1454 if (SYMBOL_SOURCE_NAME (sym)[0] > name[0])
1455 {
1456 break;
1457 }
c906108c
SS
1458 bot++;
1459 }
1460 }
1461
1462 /* Here if block isn't sorted, or we fail to find a match during the
1463 binary search above. If during the binary search above, we find a
8cc1c882 1464 symbol which is a Java symbol, then we have re-enabled the linear
c906108c
SS
1465 search flag which was reset when starting the binary search.
1466
1467 This loop is equivalent to the loop above, but hacked greatly for speed.
1468
1469 Note that parameter symbols do not always show up last in the
1470 list; this loop makes sure to take anything else other than
1471 parameter symbols first; it only uses parameter symbols as a
1472 last resort. Note that this only takes up extra computation
1473 time on a match. */
1474
1475 if (do_linear_search)
1476 {
1477 top = BLOCK_NSYMS (block);
1478 bot = 0;
1479 while (bot < top)
1480 {
1481 sym = BLOCK_SYM (block, bot);
3121eff0
DJ
1482 if (SYMBOL_NAMESPACE (sym) == namespace
1483 && (mangled_name
1484 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1485 : SYMBOL_MATCHES_NAME (sym, name)))
c906108c
SS
1486 {
1487 /* If SYM has aliases, then use any alias that is active
c5aa993b
JM
1488 at the current PC. If no alias is active at the current
1489 PC, then use the main symbol.
c906108c 1490
c5aa993b 1491 ?!? Is checking the current pc correct? Is this routine
a0b3c4fd
JM
1492 ever called to look up a symbol from another context?
1493
1494 FIXME: No, it's not correct. If someone sets a
1495 conditional breakpoint at an address, then the
1496 breakpoint's `struct expression' should refer to the
1497 `struct symbol' appropriate for the breakpoint's
1498 address, which may not be the PC.
1499
1500 Even if it were never called from another context,
1501 it's totally bizarre for lookup_symbol's behavior to
1502 depend on the value of the inferior's current PC. We
1503 should pass in the appropriate PC as well as the
1504 block. The interface to lookup_symbol should change
1505 to require the caller to provide a PC. */
1506
c5aa993b
JM
1507 if (SYMBOL_ALIASES (sym))
1508 sym = find_active_alias (sym, read_pc ());
c906108c
SS
1509
1510 sym_found = sym;
1511 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1512 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1513 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1514 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1515 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1516 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG)
1517 {
1518 break;
1519 }
1520 }
1521 bot++;
1522 }
1523 }
1524 return (sym_found); /* Will be NULL if not found. */
1525}
1526
1527/* Given a main symbol SYM and ADDR, search through the alias
1528 list to determine if an alias is active at ADDR and return
1529 the active alias.
1530
1531 If no alias is active, then return SYM. */
1532
1533static struct symbol *
fba45db2 1534find_active_alias (struct symbol *sym, CORE_ADDR addr)
c906108c
SS
1535{
1536 struct range_list *r;
1537 struct alias_list *aliases;
1538
1539 /* If we have aliases, check them first. */
1540 aliases = SYMBOL_ALIASES (sym);
1541
1542 while (aliases)
1543 {
1544 if (!SYMBOL_RANGES (aliases->sym))
c5aa993b 1545 return aliases->sym;
c906108c
SS
1546 for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
1547 {
1548 if (r->start <= addr && r->end > addr)
1549 return aliases->sym;
1550 }
1551 aliases = aliases->next;
1552 }
1553
1554 /* Nothing found, return the main symbol. */
1555 return sym;
1556}
c906108c 1557\f
c5aa993b 1558
c906108c
SS
1559/* Return the symbol for the function which contains a specified
1560 lexical block, described by a struct block BL. */
1561
1562struct symbol *
fba45db2 1563block_function (struct block *bl)
c906108c
SS
1564{
1565 while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
1566 bl = BLOCK_SUPERBLOCK (bl);
1567
1568 return BLOCK_FUNCTION (bl);
1569}
1570
1571/* Find the symtab associated with PC and SECTION. Look through the
1572 psymtabs and read in another symtab if necessary. */
1573
1574struct symtab *
fba45db2 1575find_pc_sect_symtab (CORE_ADDR pc, asection *section)
c906108c
SS
1576{
1577 register struct block *b;
1578 struct blockvector *bv;
1579 register struct symtab *s = NULL;
1580 register struct symtab *best_s = NULL;
1581 register struct partial_symtab *ps;
1582 register struct objfile *objfile;
1583 CORE_ADDR distance = 0;
8a48e967
DJ
1584 struct minimal_symbol *msymbol;
1585
1586 /* If we know that this is not a text address, return failure. This is
1587 necessary because we loop based on the block's high and low code
1588 addresses, which do not include the data ranges, and because
1589 we call find_pc_sect_psymtab which has a similar restriction based
1590 on the partial_symtab's texthigh and textlow. */
1591 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1592 if (msymbol
1593 && (msymbol->type == mst_data
1594 || msymbol->type == mst_bss
1595 || msymbol->type == mst_abs
1596 || msymbol->type == mst_file_data
1597 || msymbol->type == mst_file_bss))
1598 return NULL;
c906108c
SS
1599
1600 /* Search all symtabs for the one whose file contains our address, and which
1601 is the smallest of all the ones containing the address. This is designed
1602 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1603 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1604 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1605
1606 This happens for native ecoff format, where code from included files
1607 gets its own symtab. The symtab for the included file should have
1608 been read in already via the dependency mechanism.
1609 It might be swifter to create several symtabs with the same name
1610 like xcoff does (I'm not sure).
1611
1612 It also happens for objfiles that have their functions reordered.
1613 For these, the symtab we are looking for is not necessarily read in. */
1614
1615 ALL_SYMTABS (objfile, s)
c5aa993b
JM
1616 {
1617 bv = BLOCKVECTOR (s);
1618 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
c906108c 1619
c5aa993b 1620 if (BLOCK_START (b) <= pc
c5aa993b 1621 && BLOCK_END (b) > pc
c5aa993b
JM
1622 && (distance == 0
1623 || BLOCK_END (b) - BLOCK_START (b) < distance))
1624 {
1625 /* For an objfile that has its functions reordered,
1626 find_pc_psymtab will find the proper partial symbol table
1627 and we simply return its corresponding symtab. */
1628 /* In order to better support objfiles that contain both
1629 stabs and coff debugging info, we continue on if a psymtab
1630 can't be found. */
1631 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1632 {
1633 ps = find_pc_sect_psymtab (pc, section);
1634 if (ps)
1635 return PSYMTAB_TO_SYMTAB (ps);
1636 }
1637 if (section != 0)
1638 {
1639 int i;
261397f8 1640 struct symbol *sym = NULL;
c906108c 1641
261397f8 1642 ALL_BLOCK_SYMBOLS (b, i, sym)
c5aa993b 1643 {
261397f8
DJ
1644 fixup_symbol_section (sym, objfile);
1645 if (section == SYMBOL_BFD_SECTION (sym))
c5aa993b
JM
1646 break;
1647 }
261397f8 1648 if ((i >= BLOCK_BUCKETS (b)) && (sym == NULL))
c5aa993b
JM
1649 continue; /* no symbol in this symtab matches section */
1650 }
1651 distance = BLOCK_END (b) - BLOCK_START (b);
1652 best_s = s;
1653 }
1654 }
c906108c
SS
1655
1656 if (best_s != NULL)
c5aa993b 1657 return (best_s);
c906108c
SS
1658
1659 s = NULL;
1660 ps = find_pc_sect_psymtab (pc, section);
1661 if (ps)
1662 {
1663 if (ps->readin)
1664 /* Might want to error() here (in case symtab is corrupt and
1665 will cause a core dump), but maybe we can successfully
1666 continue, so let's not. */
c906108c 1667 warning ("\
d730266b
AC
1668(Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1669 paddr_nz (pc));
c906108c
SS
1670 s = PSYMTAB_TO_SYMTAB (ps);
1671 }
1672 return (s);
1673}
1674
1675/* Find the symtab associated with PC. Look through the psymtabs and
1676 read in another symtab if necessary. Backward compatibility, no section */
1677
1678struct symtab *
fba45db2 1679find_pc_symtab (CORE_ADDR pc)
c906108c
SS
1680{
1681 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1682}
c906108c 1683\f
c5aa993b 1684
c906108c
SS
1685#if 0
1686
1687/* Find the closest symbol value (of any sort -- function or variable)
1688 for a given address value. Slow but complete. (currently unused,
1689 mainly because it is too slow. We could fix it if each symtab and
1690 psymtab had contained in it the addresses ranges of each of its
1691 sections, which also would be required to make things like "info
1692 line *0x2345" cause psymtabs to be converted to symtabs). */
1693
1694struct symbol *
fba45db2 1695find_addr_symbol (CORE_ADDR addr, struct symtab **symtabp, CORE_ADDR *symaddrp)
c906108c
SS
1696{
1697 struct symtab *symtab, *best_symtab;
1698 struct objfile *objfile;
1699 register int bot, top;
1700 register struct symbol *sym;
1701 register CORE_ADDR sym_addr;
1702 struct block *block;
1703 int blocknum;
1704
1705 /* Info on best symbol seen so far */
1706
1707 register CORE_ADDR best_sym_addr = 0;
1708 struct symbol *best_sym = 0;
1709
1710 /* FIXME -- we should pull in all the psymtabs, too! */
1711 ALL_SYMTABS (objfile, symtab)
c5aa993b
JM
1712 {
1713 /* Search the global and static blocks in this symtab for
1714 the closest symbol-address to the desired address. */
c906108c 1715
c5aa993b
JM
1716 for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++)
1717 {
1718 QUIT;
1719 block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum);
261397f8 1720 ALL_BLOCK_SYMBOLS (block, bot, sym)
c5aa993b 1721 {
c5aa993b
JM
1722 switch (SYMBOL_CLASS (sym))
1723 {
1724 case LOC_STATIC:
1725 case LOC_LABEL:
1726 sym_addr = SYMBOL_VALUE_ADDRESS (sym);
1727 break;
1728
1729 case LOC_INDIRECT:
1730 sym_addr = SYMBOL_VALUE_ADDRESS (sym);
1731 /* An indirect symbol really lives at *sym_addr,
1732 * so an indirection needs to be done.
1733 * However, I am leaving this commented out because it's
1734 * expensive, and it's possible that symbolization
1735 * could be done without an active process (in
1736 * case this read_memory will fail). RT
1737 sym_addr = read_memory_unsigned_integer
1738 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1739 */
1740 break;
c906108c 1741
c5aa993b
JM
1742 case LOC_BLOCK:
1743 sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1744 break;
c906108c 1745
c5aa993b
JM
1746 default:
1747 continue;
1748 }
c906108c 1749
c5aa993b
JM
1750 if (sym_addr <= addr)
1751 if (sym_addr > best_sym_addr)
1752 {
1753 /* Quit if we found an exact match. */
1754 best_sym = sym;
1755 best_sym_addr = sym_addr;
1756 best_symtab = symtab;
1757 if (sym_addr == addr)
1758 goto done;
1759 }
1760 }
1761 }
1762 }
c906108c 1763
c5aa993b 1764done:
c906108c
SS
1765 if (symtabp)
1766 *symtabp = best_symtab;
1767 if (symaddrp)
1768 *symaddrp = best_sym_addr;
1769 return best_sym;
1770}
1771#endif /* 0 */
1772
7e73cedf 1773/* Find the source file and line number for a given PC value and SECTION.
c906108c
SS
1774 Return a structure containing a symtab pointer, a line number,
1775 and a pc range for the entire source line.
1776 The value's .pc field is NOT the specified pc.
1777 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1778 use the line that ends there. Otherwise, in that case, the line
1779 that begins there is used. */
1780
1781/* The big complication here is that a line may start in one file, and end just
1782 before the start of another file. This usually occurs when you #include
1783 code in the middle of a subroutine. To properly find the end of a line's PC
1784 range, we must search all symtabs associated with this compilation unit, and
1785 find the one whose first PC is closer than that of the next line in this
1786 symtab. */
1787
1788/* If it's worth the effort, we could be using a binary search. */
1789
1790struct symtab_and_line
fba45db2 1791find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent)
c906108c
SS
1792{
1793 struct symtab *s;
1794 register struct linetable *l;
1795 register int len;
1796 register int i;
1797 register struct linetable_entry *item;
1798 struct symtab_and_line val;
1799 struct blockvector *bv;
1800 struct minimal_symbol *msymbol;
1801 struct minimal_symbol *mfunsym;
1802
1803 /* Info on best line seen so far, and where it starts, and its file. */
1804
1805 struct linetable_entry *best = NULL;
1806 CORE_ADDR best_end = 0;
1807 struct symtab *best_symtab = 0;
1808
1809 /* Store here the first line number
1810 of a file which contains the line at the smallest pc after PC.
1811 If we don't find a line whose range contains PC,
1812 we will use a line one less than this,
1813 with a range from the start of that file to the first line's pc. */
1814 struct linetable_entry *alt = NULL;
1815 struct symtab *alt_symtab = 0;
1816
1817 /* Info on best line seen in this file. */
1818
1819 struct linetable_entry *prev;
1820
1821 /* If this pc is not from the current frame,
1822 it is the address of the end of a call instruction.
1823 Quite likely that is the start of the following statement.
1824 But what we want is the statement containing the instruction.
1825 Fudge the pc to make sure we get that. */
1826
c5aa993b 1827 INIT_SAL (&val); /* initialize to zeroes */
c906108c 1828
b77b1eb7
JB
1829 /* It's tempting to assume that, if we can't find debugging info for
1830 any function enclosing PC, that we shouldn't search for line
1831 number info, either. However, GAS can emit line number info for
1832 assembly files --- very helpful when debugging hand-written
1833 assembly code. In such a case, we'd have no debug info for the
1834 function, but we would have line info. */
648f4f79 1835
c906108c
SS
1836 if (notcurrent)
1837 pc -= 1;
1838
c5aa993b 1839 /* elz: added this because this function returned the wrong
c906108c
SS
1840 information if the pc belongs to a stub (import/export)
1841 to call a shlib function. This stub would be anywhere between
1842 two functions in the target, and the line info was erroneously
1843 taken to be the one of the line before the pc.
c5aa993b 1844 */
c906108c 1845 /* RT: Further explanation:
c5aa993b 1846
c906108c
SS
1847 * We have stubs (trampolines) inserted between procedures.
1848 *
1849 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1850 * exists in the main image.
1851 *
1852 * In the minimal symbol table, we have a bunch of symbols
1853 * sorted by start address. The stubs are marked as "trampoline",
1854 * the others appear as text. E.g.:
1855 *
1856 * Minimal symbol table for main image
1857 * main: code for main (text symbol)
1858 * shr1: stub (trampoline symbol)
1859 * foo: code for foo (text symbol)
1860 * ...
1861 * Minimal symbol table for "shr1" image:
1862 * ...
1863 * shr1: code for shr1 (text symbol)
1864 * ...
1865 *
1866 * So the code below is trying to detect if we are in the stub
1867 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1868 * and if found, do the symbolization from the real-code address
1869 * rather than the stub address.
1870 *
1871 * Assumptions being made about the minimal symbol table:
1872 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1873 * if we're really in the trampoline. If we're beyond it (say
1874 * we're in "foo" in the above example), it'll have a closer
1875 * symbol (the "foo" text symbol for example) and will not
1876 * return the trampoline.
1877 * 2. lookup_minimal_symbol_text() will find a real text symbol
1878 * corresponding to the trampoline, and whose address will
1879 * be different than the trampoline address. I put in a sanity
1880 * check for the address being the same, to avoid an
1881 * infinite recursion.
1882 */
c5aa993b
JM
1883 msymbol = lookup_minimal_symbol_by_pc (pc);
1884 if (msymbol != NULL)
c906108c 1885 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
c5aa993b
JM
1886 {
1887 mfunsym = lookup_minimal_symbol_text (SYMBOL_NAME (msymbol), NULL, NULL);
1888 if (mfunsym == NULL)
1889 /* I eliminated this warning since it is coming out
1890 * in the following situation:
1891 * gdb shmain // test program with shared libraries
1892 * (gdb) break shr1 // function in shared lib
1893 * Warning: In stub for ...
1894 * In the above situation, the shared lib is not loaded yet,
1895 * so of course we can't find the real func/line info,
1896 * but the "break" still works, and the warning is annoying.
1897 * So I commented out the warning. RT */
1898 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1899 /* fall through */
1900 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
1901 /* Avoid infinite recursion */
1902 /* See above comment about why warning is commented out */
1903 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1904 /* fall through */
1905 else
1906 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
1907 }
c906108c
SS
1908
1909
1910 s = find_pc_sect_symtab (pc, section);
1911 if (!s)
1912 {
1913 /* if no symbol information, return previous pc */
1914 if (notcurrent)
1915 pc++;
1916 val.pc = pc;
1917 return val;
1918 }
1919
1920 bv = BLOCKVECTOR (s);
1921
1922 /* Look at all the symtabs that share this blockvector.
1923 They all have the same apriori range, that we found was right;
1924 but they have different line tables. */
1925
1926 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
1927 {
1928 /* Find the best line in this symtab. */
1929 l = LINETABLE (s);
1930 if (!l)
c5aa993b 1931 continue;
c906108c
SS
1932 len = l->nitems;
1933 if (len <= 0)
1934 {
1935 /* I think len can be zero if the symtab lacks line numbers
1936 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1937 I'm not sure which, and maybe it depends on the symbol
1938 reader). */
1939 continue;
1940 }
1941
1942 prev = NULL;
1943 item = l->item; /* Get first line info */
1944
1945 /* Is this file's first line closer than the first lines of other files?
c5aa993b 1946 If so, record this file, and its first line, as best alternate. */
c906108c
SS
1947 if (item->pc > pc && (!alt || item->pc < alt->pc))
1948 {
1949 alt = item;
1950 alt_symtab = s;
1951 }
1952
1953 for (i = 0; i < len; i++, item++)
1954 {
1955 /* Leave prev pointing to the linetable entry for the last line
1956 that started at or before PC. */
1957 if (item->pc > pc)
1958 break;
1959
1960 prev = item;
1961 }
1962
1963 /* At this point, prev points at the line whose start addr is <= pc, and
c5aa993b
JM
1964 item points at the next line. If we ran off the end of the linetable
1965 (pc >= start of the last line), then prev == item. If pc < start of
1966 the first line, prev will not be set. */
c906108c
SS
1967
1968 /* Is this file's best line closer than the best in the other files?
c5aa993b 1969 If so, record this file, and its best line, as best so far. */
c906108c
SS
1970
1971 if (prev && (!best || prev->pc > best->pc))
1972 {
1973 best = prev;
1974 best_symtab = s;
25d53da1
KB
1975
1976 /* Discard BEST_END if it's before the PC of the current BEST. */
1977 if (best_end <= best->pc)
1978 best_end = 0;
c906108c 1979 }
25d53da1
KB
1980
1981 /* If another line (denoted by ITEM) is in the linetable and its
1982 PC is after BEST's PC, but before the current BEST_END, then
1983 use ITEM's PC as the new best_end. */
1984 if (best && i < len && item->pc > best->pc
1985 && (best_end == 0 || best_end > item->pc))
1986 best_end = item->pc;
c906108c
SS
1987 }
1988
1989 if (!best_symtab)
1990 {
1991 if (!alt_symtab)
1992 { /* If we didn't find any line # info, just
1993 return zeros. */
1994 val.pc = pc;
1995 }
1996 else
1997 {
1998 val.symtab = alt_symtab;
1999 val.line = alt->line - 1;
2000
2001 /* Don't return line 0, that means that we didn't find the line. */
c5aa993b
JM
2002 if (val.line == 0)
2003 ++val.line;
c906108c
SS
2004
2005 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2006 val.end = alt->pc;
2007 }
2008 }
e8717518
FF
2009 else if (best->line == 0)
2010 {
2011 /* If our best fit is in a range of PC's for which no line
2012 number info is available (line number is zero) then we didn't
2013 find any valid line information. */
2014 val.pc = pc;
2015 }
c906108c
SS
2016 else
2017 {
2018 val.symtab = best_symtab;
2019 val.line = best->line;
2020 val.pc = best->pc;
2021 if (best_end && (!alt || best_end < alt->pc))
2022 val.end = best_end;
2023 else if (alt)
2024 val.end = alt->pc;
2025 else
2026 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2027 }
2028 val.section = section;
2029 return val;
2030}
2031
2032/* Backward compatibility (no section) */
2033
2034struct symtab_and_line
fba45db2 2035find_pc_line (CORE_ADDR pc, int notcurrent)
c906108c 2036{
c5aa993b 2037 asection *section;
c906108c
SS
2038
2039 section = find_pc_overlay (pc);
2040 if (pc_in_unmapped_range (pc, section))
2041 pc = overlay_mapped_address (pc, section);
2042 return find_pc_sect_line (pc, section, notcurrent);
2043}
c906108c 2044\f
c906108c
SS
2045/* Find line number LINE in any symtab whose name is the same as
2046 SYMTAB.
2047
2048 If found, return the symtab that contains the linetable in which it was
2049 found, set *INDEX to the index in the linetable of the best entry
2050 found, and set *EXACT_MATCH nonzero if the value returned is an
2051 exact match.
2052
2053 If not found, return NULL. */
2054
50641945 2055struct symtab *
fba45db2 2056find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
c906108c
SS
2057{
2058 int exact;
2059
2060 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2061 so far seen. */
2062
2063 int best_index;
2064 struct linetable *best_linetable;
2065 struct symtab *best_symtab;
2066
2067 /* First try looking it up in the given symtab. */
2068 best_linetable = LINETABLE (symtab);
2069 best_symtab = symtab;
2070 best_index = find_line_common (best_linetable, line, &exact);
2071 if (best_index < 0 || !exact)
2072 {
2073 /* Didn't find an exact match. So we better keep looking for
c5aa993b
JM
2074 another symtab with the same name. In the case of xcoff,
2075 multiple csects for one source file (produced by IBM's FORTRAN
2076 compiler) produce multiple symtabs (this is unavoidable
2077 assuming csects can be at arbitrary places in memory and that
2078 the GLOBAL_BLOCK of a symtab has a begin and end address). */
c906108c
SS
2079
2080 /* BEST is the smallest linenumber > LINE so far seen,
c5aa993b
JM
2081 or 0 if none has been seen so far.
2082 BEST_INDEX and BEST_LINETABLE identify the item for it. */
c906108c
SS
2083 int best;
2084
2085 struct objfile *objfile;
2086 struct symtab *s;
2087
2088 if (best_index >= 0)
2089 best = best_linetable->item[best_index].line;
2090 else
2091 best = 0;
2092
2093 ALL_SYMTABS (objfile, s)
c5aa993b
JM
2094 {
2095 struct linetable *l;
2096 int ind;
c906108c 2097
c5aa993b
JM
2098 if (!STREQ (symtab->filename, s->filename))
2099 continue;
2100 l = LINETABLE (s);
2101 ind = find_line_common (l, line, &exact);
2102 if (ind >= 0)
2103 {
2104 if (exact)
2105 {
2106 best_index = ind;
2107 best_linetable = l;
2108 best_symtab = s;
2109 goto done;
2110 }
2111 if (best == 0 || l->item[ind].line < best)
2112 {
2113 best = l->item[ind].line;
2114 best_index = ind;
2115 best_linetable = l;
2116 best_symtab = s;
2117 }
2118 }
2119 }
c906108c 2120 }
c5aa993b 2121done:
c906108c
SS
2122 if (best_index < 0)
2123 return NULL;
2124
2125 if (index)
2126 *index = best_index;
2127 if (exact_match)
2128 *exact_match = exact;
2129
2130 return best_symtab;
2131}
2132\f
2133/* Set the PC value for a given source file and line number and return true.
2134 Returns zero for invalid line number (and sets the PC to 0).
2135 The source file is specified with a struct symtab. */
2136
2137int
fba45db2 2138find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
c906108c
SS
2139{
2140 struct linetable *l;
2141 int ind;
2142
2143 *pc = 0;
2144 if (symtab == 0)
2145 return 0;
2146
2147 symtab = find_line_symtab (symtab, line, &ind, NULL);
2148 if (symtab != NULL)
2149 {
2150 l = LINETABLE (symtab);
2151 *pc = l->item[ind].pc;
2152 return 1;
2153 }
2154 else
2155 return 0;
2156}
2157
2158/* Find the range of pc values in a line.
2159 Store the starting pc of the line into *STARTPTR
2160 and the ending pc (start of next line) into *ENDPTR.
2161 Returns 1 to indicate success.
2162 Returns 0 if could not find the specified line. */
2163
2164int
fba45db2
KB
2165find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2166 CORE_ADDR *endptr)
c906108c
SS
2167{
2168 CORE_ADDR startaddr;
2169 struct symtab_and_line found_sal;
2170
2171 startaddr = sal.pc;
c5aa993b 2172 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
c906108c
SS
2173 return 0;
2174
2175 /* This whole function is based on address. For example, if line 10 has
2176 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2177 "info line *0x123" should say the line goes from 0x100 to 0x200
2178 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2179 This also insures that we never give a range like "starts at 0x134
2180 and ends at 0x12c". */
2181
2182 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2183 if (found_sal.line != sal.line)
2184 {
2185 /* The specified line (sal) has zero bytes. */
2186 *startptr = found_sal.pc;
2187 *endptr = found_sal.pc;
2188 }
2189 else
2190 {
2191 *startptr = found_sal.pc;
2192 *endptr = found_sal.end;
2193 }
2194 return 1;
2195}
2196
2197/* Given a line table and a line number, return the index into the line
2198 table for the pc of the nearest line whose number is >= the specified one.
2199 Return -1 if none is found. The value is >= 0 if it is an index.
2200
2201 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2202
2203static int
fba45db2
KB
2204find_line_common (register struct linetable *l, register int lineno,
2205 int *exact_match)
c906108c
SS
2206{
2207 register int i;
2208 register int len;
2209
2210 /* BEST is the smallest linenumber > LINENO so far seen,
2211 or 0 if none has been seen so far.
2212 BEST_INDEX identifies the item for it. */
2213
2214 int best_index = -1;
2215 int best = 0;
2216
2217 if (lineno <= 0)
2218 return -1;
2219 if (l == 0)
2220 return -1;
2221
2222 len = l->nitems;
2223 for (i = 0; i < len; i++)
2224 {
2225 register struct linetable_entry *item = &(l->item[i]);
2226
2227 if (item->line == lineno)
2228 {
2229 /* Return the first (lowest address) entry which matches. */
2230 *exact_match = 1;
2231 return i;
2232 }
2233
2234 if (item->line > lineno && (best == 0 || item->line < best))
2235 {
2236 best = item->line;
2237 best_index = i;
2238 }
2239 }
2240
2241 /* If we got here, we didn't get an exact match. */
2242
2243 *exact_match = 0;
2244 return best_index;
2245}
2246
2247int
fba45db2 2248find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
c906108c
SS
2249{
2250 struct symtab_and_line sal;
2251 sal = find_pc_line (pc, 0);
2252 *startptr = sal.pc;
2253 *endptr = sal.end;
2254 return sal.symtab != 0;
2255}
2256
2257/* Given a function symbol SYM, find the symtab and line for the start
2258 of the function.
2259 If the argument FUNFIRSTLINE is nonzero, we want the first line
2260 of real code inside the function. */
2261
50641945 2262struct symtab_and_line
fba45db2 2263find_function_start_sal (struct symbol *sym, int funfirstline)
c906108c
SS
2264{
2265 CORE_ADDR pc;
2266 struct symtab_and_line sal;
2267
2268 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2269 fixup_symbol_section (sym, NULL);
2270 if (funfirstline)
c5aa993b 2271 { /* skip "first line" of function (which is actually its prologue) */
c906108c
SS
2272 asection *section = SYMBOL_BFD_SECTION (sym);
2273 /* If function is in an unmapped overlay, use its unmapped LMA
c5aa993b 2274 address, so that SKIP_PROLOGUE has something unique to work on */
c906108c
SS
2275 if (section_is_overlay (section) &&
2276 !section_is_mapped (section))
2277 pc = overlay_unmapped_address (pc, section);
2278
2279 pc += FUNCTION_START_OFFSET;
b83266a0 2280 pc = SKIP_PROLOGUE (pc);
c906108c
SS
2281
2282 /* For overlays, map pc back into its mapped VMA range */
2283 pc = overlay_mapped_address (pc, section);
2284 }
2285 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2286
2287#ifdef PROLOGUE_FIRSTLINE_OVERLAP
2288 /* Convex: no need to suppress code on first line, if any */
2289 sal.pc = pc;
2290#else
2291 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2292 line is still part of the same function. */
2293 if (sal.pc != pc
2294 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2295 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2296 {
2297 /* First pc of next line */
2298 pc = sal.end;
2299 /* Recalculate the line number (might not be N+1). */
2300 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2301 }
2302 sal.pc = pc;
2303#endif
2304
2305 return sal;
2306}
50641945 2307
c906108c
SS
2308/* If P is of the form "operator[ \t]+..." where `...' is
2309 some legitimate operator text, return a pointer to the
2310 beginning of the substring of the operator text.
2311 Otherwise, return "". */
2312char *
fba45db2 2313operator_chars (char *p, char **end)
c906108c
SS
2314{
2315 *end = "";
2316 if (strncmp (p, "operator", 8))
2317 return *end;
2318 p += 8;
2319
2320 /* Don't get faked out by `operator' being part of a longer
2321 identifier. */
c5aa993b 2322 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
c906108c
SS
2323 return *end;
2324
2325 /* Allow some whitespace between `operator' and the operator symbol. */
2326 while (*p == ' ' || *p == '\t')
2327 p++;
2328
2329 /* Recognize 'operator TYPENAME'. */
2330
c5aa993b 2331 if (isalpha (*p) || *p == '_' || *p == '$')
c906108c 2332 {
c5aa993b
JM
2333 register char *q = p + 1;
2334 while (isalnum (*q) || *q == '_' || *q == '$')
c906108c
SS
2335 q++;
2336 *end = q;
2337 return p;
2338 }
2339
53e8ad3d
MS
2340 while (*p)
2341 switch (*p)
2342 {
2343 case '\\': /* regexp quoting */
2344 if (p[1] == '*')
2345 {
2346 if (p[2] == '=') /* 'operator\*=' */
2347 *end = p + 3;
2348 else /* 'operator\*' */
2349 *end = p + 2;
2350 return p;
2351 }
2352 else if (p[1] == '[')
2353 {
2354 if (p[2] == ']')
2355 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2356 else if (p[2] == '\\' && p[3] == ']')
2357 {
2358 *end = p + 4; /* 'operator\[\]' */
2359 return p;
2360 }
2361 else
2362 error ("nothing is allowed between '[' and ']'");
2363 }
2364 else
2365 {
2366 /* Gratuitous qoute: skip it and move on. */
2367 p++;
2368 continue;
2369 }
2370 break;
2371 case '!':
2372 case '=':
2373 case '*':
2374 case '/':
2375 case '%':
2376 case '^':
2377 if (p[1] == '=')
2378 *end = p + 2;
2379 else
2380 *end = p + 1;
2381 return p;
2382 case '<':
2383 case '>':
2384 case '+':
2385 case '-':
2386 case '&':
2387 case '|':
2388 if (p[0] == '-' && p[1] == '>')
2389 {
2390 /* Struct pointer member operator 'operator->'. */
2391 if (p[2] == '*')
2392 {
2393 *end = p + 3; /* 'operator->*' */
2394 return p;
2395 }
2396 else if (p[2] == '\\')
2397 {
2398 *end = p + 4; /* Hopefully 'operator->\*' */
2399 return p;
2400 }
2401 else
2402 {
2403 *end = p + 2; /* 'operator->' */
2404 return p;
2405 }
2406 }
2407 if (p[1] == '=' || p[1] == p[0])
2408 *end = p + 2;
2409 else
2410 *end = p + 1;
2411 return p;
2412 case '~':
2413 case ',':
c5aa993b 2414 *end = p + 1;
53e8ad3d
MS
2415 return p;
2416 case '(':
2417 if (p[1] != ')')
2418 error ("`operator ()' must be specified without whitespace in `()'");
c5aa993b 2419 *end = p + 2;
53e8ad3d
MS
2420 return p;
2421 case '?':
2422 if (p[1] != ':')
2423 error ("`operator ?:' must be specified without whitespace in `?:'");
2424 *end = p + 2;
2425 return p;
2426 case '[':
2427 if (p[1] != ']')
2428 error ("`operator []' must be specified without whitespace in `[]'");
2429 *end = p + 2;
2430 return p;
2431 default:
2432 error ("`operator %s' not supported", p);
2433 break;
2434 }
2435
c906108c
SS
2436 *end = "";
2437 return *end;
2438}
c906108c 2439\f
c5aa993b 2440
c94fdfd0
EZ
2441/* If FILE is not already in the table of files, return zero;
2442 otherwise return non-zero. Optionally add FILE to the table if ADD
2443 is non-zero. If *FIRST is non-zero, forget the old table
2444 contents. */
2445static int
2446filename_seen (const char *file, int add, int *first)
c906108c 2447{
c94fdfd0
EZ
2448 /* Table of files seen so far. */
2449 static const char **tab = NULL;
c906108c
SS
2450 /* Allocated size of tab in elements.
2451 Start with one 256-byte block (when using GNU malloc.c).
2452 24 is the malloc overhead when range checking is in effect. */
2453 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2454 /* Current size of tab in elements. */
2455 static int tab_cur_size;
c94fdfd0 2456 const char **p;
c906108c
SS
2457
2458 if (*first)
2459 {
2460 if (tab == NULL)
c94fdfd0 2461 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
c906108c
SS
2462 tab_cur_size = 0;
2463 }
2464
c94fdfd0 2465 /* Is FILE in tab? */
c906108c 2466 for (p = tab; p < tab + tab_cur_size; p++)
c94fdfd0
EZ
2467 if (strcmp (*p, file) == 0)
2468 return 1;
2469
2470 /* No; maybe add it to tab. */
2471 if (add)
c906108c 2472 {
c94fdfd0
EZ
2473 if (tab_cur_size == tab_alloc_size)
2474 {
2475 tab_alloc_size *= 2;
2476 tab = (const char **) xrealloc ((char *) tab,
2477 tab_alloc_size * sizeof (*tab));
2478 }
2479 tab[tab_cur_size++] = file;
c906108c 2480 }
c906108c 2481
c94fdfd0
EZ
2482 return 0;
2483}
2484
2485/* Slave routine for sources_info. Force line breaks at ,'s.
2486 NAME is the name to print and *FIRST is nonzero if this is the first
2487 name printed. Set *FIRST to zero. */
2488static void
2489output_source_filename (char *name, int *first)
2490{
2491 /* Since a single source file can result in several partial symbol
2492 tables, we need to avoid printing it more than once. Note: if
2493 some of the psymtabs are read in and some are not, it gets
2494 printed both under "Source files for which symbols have been
2495 read" and "Source files for which symbols will be read in on
2496 demand". I consider this a reasonable way to deal with the
2497 situation. I'm not sure whether this can also happen for
2498 symtabs; it doesn't hurt to check. */
2499
2500 /* Was NAME already seen? */
2501 if (filename_seen (name, 1, first))
2502 {
2503 /* Yes; don't print it again. */
2504 return;
2505 }
2506 /* No; print it and reset *FIRST. */
c906108c
SS
2507 if (*first)
2508 {
2509 *first = 0;
2510 }
2511 else
2512 {
2513 printf_filtered (", ");
2514 }
2515
2516 wrap_here ("");
2517 fputs_filtered (name, gdb_stdout);
c5aa993b 2518}
c906108c
SS
2519
2520static void
fba45db2 2521sources_info (char *ignore, int from_tty)
c906108c
SS
2522{
2523 register struct symtab *s;
2524 register struct partial_symtab *ps;
2525 register struct objfile *objfile;
2526 int first;
c5aa993b 2527
c906108c
SS
2528 if (!have_full_symbols () && !have_partial_symbols ())
2529 {
e85428fc 2530 error ("No symbol table is loaded. Use the \"file\" command.");
c906108c 2531 }
c5aa993b 2532
c906108c
SS
2533 printf_filtered ("Source files for which symbols have been read in:\n\n");
2534
2535 first = 1;
2536 ALL_SYMTABS (objfile, s)
c5aa993b
JM
2537 {
2538 output_source_filename (s->filename, &first);
2539 }
c906108c 2540 printf_filtered ("\n\n");
c5aa993b 2541
c906108c
SS
2542 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2543
2544 first = 1;
2545 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
2546 {
2547 if (!ps->readin)
2548 {
2549 output_source_filename (ps->filename, &first);
2550 }
2551 }
c906108c
SS
2552 printf_filtered ("\n");
2553}
2554
2555static int
fd118b61 2556file_matches (char *file, char *files[], int nfiles)
c906108c
SS
2557{
2558 int i;
2559
2560 if (file != NULL && nfiles != 0)
2561 {
2562 for (i = 0; i < nfiles; i++)
c5aa993b 2563 {
31889e00 2564 if (strcmp (files[i], lbasename (file)) == 0)
c5aa993b
JM
2565 return 1;
2566 }
c906108c
SS
2567 }
2568 else if (nfiles == 0)
2569 return 1;
2570 return 0;
2571}
2572
2573/* Free any memory associated with a search. */
2574void
fba45db2 2575free_search_symbols (struct symbol_search *symbols)
c906108c
SS
2576{
2577 struct symbol_search *p;
2578 struct symbol_search *next;
2579
2580 for (p = symbols; p != NULL; p = next)
2581 {
2582 next = p->next;
b8c9b27d 2583 xfree (p);
c906108c
SS
2584 }
2585}
2586
5bd98722
AC
2587static void
2588do_free_search_symbols_cleanup (void *symbols)
2589{
2590 free_search_symbols (symbols);
2591}
2592
2593struct cleanup *
2594make_cleanup_free_search_symbols (struct symbol_search *symbols)
2595{
2596 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2597}
2598
434d2d4f
DJ
2599/* Helper function for sort_search_symbols and qsort. Can only
2600 sort symbols, not minimal symbols. */
2601static int
2602compare_search_syms (const void *sa, const void *sb)
2603{
2604 struct symbol_search **sym_a = (struct symbol_search **) sa;
2605 struct symbol_search **sym_b = (struct symbol_search **) sb;
2606
2607 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a)->symbol),
2608 SYMBOL_SOURCE_NAME ((*sym_b)->symbol));
2609}
2610
2611/* Sort the ``nfound'' symbols in the list after prevtail. Leave
2612 prevtail where it is, but update its next pointer to point to
2613 the first of the sorted symbols. */
2614static struct symbol_search *
2615sort_search_symbols (struct symbol_search *prevtail, int nfound)
2616{
2617 struct symbol_search **symbols, *symp, *old_next;
2618 int i;
2619
2620 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2621 * nfound);
2622 symp = prevtail->next;
2623 for (i = 0; i < nfound; i++)
2624 {
2625 symbols[i] = symp;
2626 symp = symp->next;
2627 }
2628 /* Generally NULL. */
2629 old_next = symp;
2630
2631 qsort (symbols, nfound, sizeof (struct symbol_search *),
2632 compare_search_syms);
2633
2634 symp = prevtail;
2635 for (i = 0; i < nfound; i++)
2636 {
2637 symp->next = symbols[i];
2638 symp = symp->next;
2639 }
2640 symp->next = old_next;
2641
8ed32cc0 2642 xfree (symbols);
434d2d4f
DJ
2643 return symp;
2644}
5bd98722 2645
c906108c
SS
2646/* Search the symbol table for matches to the regular expression REGEXP,
2647 returning the results in *MATCHES.
2648
2649 Only symbols of KIND are searched:
c5aa993b
JM
2650 FUNCTIONS_NAMESPACE - search all functions
2651 TYPES_NAMESPACE - search all type names
2652 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2653 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2654 and constants (enums)
c906108c
SS
2655
2656 free_search_symbols should be called when *MATCHES is no longer needed.
434d2d4f
DJ
2657
2658 The results are sorted locally; each symtab's global and static blocks are
2659 separately alphabetized.
c5aa993b 2660 */
c906108c 2661void
fd118b61
KB
2662search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[],
2663 struct symbol_search **matches)
c906108c
SS
2664{
2665 register struct symtab *s;
2666 register struct partial_symtab *ps;
2667 register struct blockvector *bv;
2668 struct blockvector *prev_bv = 0;
2669 register struct block *b;
2670 register int i = 0;
2671 register int j;
2672 register struct symbol *sym;
2673 struct partial_symbol **psym;
2674 struct objfile *objfile;
2675 struct minimal_symbol *msymbol;
2676 char *val;
2677 int found_misc = 0;
2678 static enum minimal_symbol_type types[]
c5aa993b
JM
2679 =
2680 {mst_data, mst_text, mst_abs, mst_unknown};
c906108c 2681 static enum minimal_symbol_type types2[]
c5aa993b
JM
2682 =
2683 {mst_bss, mst_file_text, mst_abs, mst_unknown};
c906108c 2684 static enum minimal_symbol_type types3[]
c5aa993b
JM
2685 =
2686 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
c906108c 2687 static enum minimal_symbol_type types4[]
c5aa993b
JM
2688 =
2689 {mst_file_bss, mst_text, mst_abs, mst_unknown};
c906108c
SS
2690 enum minimal_symbol_type ourtype;
2691 enum minimal_symbol_type ourtype2;
2692 enum minimal_symbol_type ourtype3;
2693 enum minimal_symbol_type ourtype4;
2694 struct symbol_search *sr;
2695 struct symbol_search *psr;
2696 struct symbol_search *tail;
2697 struct cleanup *old_chain = NULL;
2698
993f3aa5 2699 if (kind < VARIABLES_NAMESPACE)
c906108c
SS
2700 error ("must search on specific namespace");
2701
52204a0b
DT
2702 ourtype = types[(int) (kind - VARIABLES_NAMESPACE)];
2703 ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)];
2704 ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)];
2705 ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)];
c906108c
SS
2706
2707 sr = *matches = NULL;
2708 tail = NULL;
2709
2710 if (regexp != NULL)
2711 {
2712 /* Make sure spacing is right for C++ operators.
2713 This is just a courtesy to make the matching less sensitive
2714 to how many spaces the user leaves between 'operator'
2715 and <TYPENAME> or <OPERATOR>. */
2716 char *opend;
2717 char *opname = operator_chars (regexp, &opend);
2718 if (*opname)
c5aa993b
JM
2719 {
2720 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2721 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2722 {
2723 /* There should 1 space between 'operator' and 'TYPENAME'. */
2724 if (opname[-1] != ' ' || opname[-2] == ' ')
2725 fix = 1;
2726 }
2727 else
2728 {
2729 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2730 if (opname[-1] == ' ')
2731 fix = 0;
2732 }
2733 /* If wrong number of spaces, fix it. */
2734 if (fix >= 0)
2735 {
045f55a6 2736 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
c5aa993b
JM
2737 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2738 regexp = tmp;
2739 }
2740 }
2741
c906108c 2742 if (0 != (val = re_comp (regexp)))
c5aa993b 2743 error ("Invalid regexp (%s): %s", val, regexp);
c906108c
SS
2744 }
2745
2746 /* Search through the partial symtabs *first* for all symbols
2747 matching the regexp. That way we don't have to reproduce all of
2748 the machinery below. */
2749
2750 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
2751 {
2752 struct partial_symbol **bound, **gbound, **sbound;
2753 int keep_going = 1;
2754
2755 if (ps->readin)
2756 continue;
2757
2758 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2759 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2760 bound = gbound;
2761
2762 /* Go through all of the symbols stored in a partial
2763 symtab in one loop. */
2764 psym = objfile->global_psymbols.list + ps->globals_offset;
2765 while (keep_going)
2766 {
2767 if (psym >= bound)
2768 {
2769 if (bound == gbound && ps->n_static_syms != 0)
2770 {
2771 psym = objfile->static_psymbols.list + ps->statics_offset;
2772 bound = sbound;
2773 }
2774 else
2775 keep_going = 0;
2776 continue;
2777 }
2778 else
2779 {
2780 QUIT;
2781
2782 /* If it would match (logic taken from loop below)
2783 load the file and go on to the next one */
2784 if (file_matches (ps->filename, files, nfiles)
2785 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym))
2786 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2787 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2788 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2789 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2790 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2791 {
2792 PSYMTAB_TO_SYMTAB (ps);
2793 keep_going = 0;
2794 }
2795 }
2796 psym++;
2797 }
2798 }
c906108c
SS
2799
2800 /* Here, we search through the minimal symbol tables for functions
2801 and variables that match, and force their symbols to be read.
2802 This is in particular necessary for demangled variable names,
2803 which are no longer put into the partial symbol tables.
2804 The symbol will then be found during the scan of symtabs below.
2805
2806 For functions, find_pc_symtab should succeed if we have debug info
2807 for the function, for variables we have to call lookup_symbol
2808 to determine if the variable has debug info.
2809 If the lookup fails, set found_misc so that we will rescan to print
2810 any matching symbols without debug info.
c5aa993b 2811 */
c906108c
SS
2812
2813 if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE))
2814 {
2815 ALL_MSYMBOLS (objfile, msymbol)
c5aa993b
JM
2816 {
2817 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2818 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2819 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2820 MSYMBOL_TYPE (msymbol) == ourtype4)
2821 {
2822 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2823 {
2824 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2825 {
2826 if (kind == FUNCTIONS_NAMESPACE
2827 || lookup_symbol (SYMBOL_NAME (msymbol),
2828 (struct block *) NULL,
2829 VAR_NAMESPACE,
2830 0, (struct symtab **) NULL) == NULL)
2831 found_misc = 1;
2832 }
2833 }
2834 }
2835 }
c906108c
SS
2836 }
2837
2838 ALL_SYMTABS (objfile, s)
c5aa993b
JM
2839 {
2840 bv = BLOCKVECTOR (s);
2841 /* Often many files share a blockvector.
2842 Scan each blockvector only once so that
2843 we don't get every symbol many times.
2844 It happens that the first symtab in the list
2845 for any given blockvector is the main file. */
2846 if (bv != prev_bv)
2847 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
2848 {
434d2d4f
DJ
2849 struct symbol_search *prevtail = tail;
2850 int nfound = 0;
c5aa993b 2851 b = BLOCKVECTOR_BLOCK (bv, i);
261397f8 2852 ALL_BLOCK_SYMBOLS (b, j, sym)
c5aa993b
JM
2853 {
2854 QUIT;
c5aa993b
JM
2855 if (file_matches (s->filename, files, nfiles)
2856 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
2857 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
2858 && SYMBOL_CLASS (sym) != LOC_BLOCK
2859 && SYMBOL_CLASS (sym) != LOC_CONST)
2860 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)
2861 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
2862 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK))))
2863 {
2864 /* match */
2865 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2866 psr->block = i;
2867 psr->symtab = s;
2868 psr->symbol = sym;
2869 psr->msymbol = NULL;
2870 psr->next = NULL;
2871 if (tail == NULL)
434d2d4f 2872 sr = psr;
c5aa993b
JM
2873 else
2874 tail->next = psr;
2875 tail = psr;
434d2d4f
DJ
2876 nfound ++;
2877 }
2878 }
2879 if (nfound > 0)
2880 {
2881 if (prevtail == NULL)
2882 {
2883 struct symbol_search dummy;
2884
2885 dummy.next = sr;
2886 tail = sort_search_symbols (&dummy, nfound);
2887 sr = dummy.next;
2888
2889 old_chain = make_cleanup_free_search_symbols (sr);
c5aa993b 2890 }
434d2d4f
DJ
2891 else
2892 tail = sort_search_symbols (prevtail, nfound);
c5aa993b
JM
2893 }
2894 }
2895 prev_bv = bv;
2896 }
c906108c
SS
2897
2898 /* If there are no eyes, avoid all contact. I mean, if there are
2899 no debug symbols, then print directly from the msymbol_vector. */
2900
2901 if (found_misc || kind != FUNCTIONS_NAMESPACE)
2902 {
2903 ALL_MSYMBOLS (objfile, msymbol)
c5aa993b
JM
2904 {
2905 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2906 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2907 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2908 MSYMBOL_TYPE (msymbol) == ourtype4)
2909 {
2910 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2911 {
2912 /* Functions: Look up by address. */
2913 if (kind != FUNCTIONS_NAMESPACE ||
2914 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
2915 {
2916 /* Variables/Absolutes: Look up by name */
2917 if (lookup_symbol (SYMBOL_NAME (msymbol),
2918 (struct block *) NULL, VAR_NAMESPACE,
2919 0, (struct symtab **) NULL) == NULL)
2920 {
2921 /* match */
2922 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2923 psr->block = i;
2924 psr->msymbol = msymbol;
2925 psr->symtab = NULL;
2926 psr->symbol = NULL;
2927 psr->next = NULL;
2928 if (tail == NULL)
2929 {
2930 sr = psr;
5bd98722 2931 old_chain = make_cleanup_free_search_symbols (sr);
c5aa993b
JM
2932 }
2933 else
2934 tail->next = psr;
2935 tail = psr;
2936 }
2937 }
2938 }
2939 }
2940 }
c906108c
SS
2941 }
2942
2943 *matches = sr;
2944 if (sr != NULL)
2945 discard_cleanups (old_chain);
2946}
2947
2948/* Helper function for symtab_symbol_info, this function uses
2949 the data returned from search_symbols() to print information
2950 regarding the match to gdb_stdout.
c5aa993b 2951 */
c906108c 2952static void
fba45db2
KB
2953print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym,
2954 int block, char *last)
c906108c
SS
2955{
2956 if (last == NULL || strcmp (last, s->filename) != 0)
2957 {
2958 fputs_filtered ("\nFile ", gdb_stdout);
2959 fputs_filtered (s->filename, gdb_stdout);
2960 fputs_filtered (":\n", gdb_stdout);
2961 }
2962
2963 if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK)
2964 printf_filtered ("static ");
c5aa993b 2965
c906108c
SS
2966 /* Typedef that is not a C++ class */
2967 if (kind == TYPES_NAMESPACE
2968 && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
a5238fbc 2969 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
c906108c 2970 /* variable, func, or typedef-that-is-c++-class */
c5aa993b
JM
2971 else if (kind < TYPES_NAMESPACE ||
2972 (kind == TYPES_NAMESPACE &&
2973 SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE))
c906108c
SS
2974 {
2975 type_print (SYMBOL_TYPE (sym),
c5aa993b
JM
2976 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
2977 ? "" : SYMBOL_SOURCE_NAME (sym)),
2978 gdb_stdout, 0);
c906108c
SS
2979
2980 printf_filtered (";\n");
2981 }
2982 else
2983 {
c5aa993b 2984#if 0
c906108c
SS
2985 /* Tiemann says: "info methods was never implemented." */
2986 char *demangled_name;
c5aa993b
JM
2987 c_type_print_base (TYPE_FN_FIELD_TYPE (t, block),
2988 gdb_stdout, 0, 0);
2989 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t, block),
2990 gdb_stdout, 0);
c906108c 2991 if (TYPE_FN_FIELD_STUB (t, block))
c5aa993b 2992 check_stub_method (TYPE_DOMAIN_TYPE (type), j, block);
c906108c 2993 demangled_name =
c5aa993b
JM
2994 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t, block),
2995 DMGL_ANSI | DMGL_PARAMS);
c906108c 2996 if (demangled_name == NULL)
c5aa993b
JM
2997 fprintf_filtered (stream, "<badly mangled name %s>",
2998 TYPE_FN_FIELD_PHYSNAME (t, block));
c906108c 2999 else
c5aa993b
JM
3000 {
3001 fputs_filtered (demangled_name, stream);
b8c9b27d 3002 xfree (demangled_name);
c5aa993b
JM
3003 }
3004#endif
c906108c
SS
3005 }
3006}
3007
3008/* This help function for symtab_symbol_info() prints information
3009 for non-debugging symbols to gdb_stdout.
c5aa993b 3010 */
c906108c 3011static void
fba45db2 3012print_msymbol_info (struct minimal_symbol *msymbol)
c906108c 3013{
3ac4495a
MS
3014 char *tmp;
3015
3016 if (TARGET_ADDR_BIT <= 32)
14a5e767
AC
3017 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3018 & (CORE_ADDR) 0xffffffff,
3019 "08l");
3ac4495a 3020 else
14a5e767
AC
3021 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3022 "016l");
3ac4495a
MS
3023 printf_filtered ("%s %s\n",
3024 tmp, SYMBOL_SOURCE_NAME (msymbol));
c906108c
SS
3025}
3026
3027/* This is the guts of the commands "info functions", "info types", and
3028 "info variables". It calls search_symbols to find all matches and then
3029 print_[m]symbol_info to print out some useful information about the
3030 matches.
c5aa993b 3031 */
c906108c 3032static void
fba45db2 3033symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty)
c906108c
SS
3034{
3035 static char *classnames[]
c5aa993b
JM
3036 =
3037 {"variable", "function", "type", "method"};
c906108c
SS
3038 struct symbol_search *symbols;
3039 struct symbol_search *p;
3040 struct cleanup *old_chain;
3041 char *last_filename = NULL;
3042 int first = 1;
3043
3044 /* must make sure that if we're interrupted, symbols gets freed */
3045 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
5bd98722 3046 old_chain = make_cleanup_free_search_symbols (symbols);
c906108c
SS
3047
3048 printf_filtered (regexp
c5aa993b
JM
3049 ? "All %ss matching regular expression \"%s\":\n"
3050 : "All defined %ss:\n",
52204a0b 3051 classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp);
c906108c
SS
3052
3053 for (p = symbols; p != NULL; p = p->next)
3054 {
3055 QUIT;
3056
3057 if (p->msymbol != NULL)
c5aa993b
JM
3058 {
3059 if (first)
3060 {
3061 printf_filtered ("\nNon-debugging symbols:\n");
3062 first = 0;
3063 }
3064 print_msymbol_info (p->msymbol);
3065 }
c906108c 3066 else
c5aa993b
JM
3067 {
3068 print_symbol_info (kind,
3069 p->symtab,
3070 p->symbol,
3071 p->block,
3072 last_filename);
3073 last_filename = p->symtab->filename;
3074 }
c906108c
SS
3075 }
3076
3077 do_cleanups (old_chain);
3078}
3079
3080static void
fba45db2 3081variables_info (char *regexp, int from_tty)
c906108c
SS
3082{
3083 symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty);
3084}
3085
3086static void
fba45db2 3087functions_info (char *regexp, int from_tty)
c906108c
SS
3088{
3089 symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty);
3090}
3091
357e46e7 3092
c906108c 3093static void
fba45db2 3094types_info (char *regexp, int from_tty)
c906108c
SS
3095{
3096 symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty);
3097}
3098
3099#if 0
3100/* Tiemann says: "info methods was never implemented." */
3101static void
fba45db2 3102methods_info (char *regexp)
c906108c
SS
3103{
3104 symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty);
3105}
3106#endif /* 0 */
3107
3108/* Breakpoint all functions matching regular expression. */
8926118c 3109
8b93c638 3110void
fba45db2 3111rbreak_command_wrapper (char *regexp, int from_tty)
8b93c638
JM
3112{
3113 rbreak_command (regexp, from_tty);
3114}
8926118c 3115
c906108c 3116static void
fba45db2 3117rbreak_command (char *regexp, int from_tty)
c906108c
SS
3118{
3119 struct symbol_search *ss;
3120 struct symbol_search *p;
3121 struct cleanup *old_chain;
3122
3123 search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss);
5bd98722 3124 old_chain = make_cleanup_free_search_symbols (ss);
c906108c
SS
3125
3126 for (p = ss; p != NULL; p = p->next)
3127 {
3128 if (p->msymbol == NULL)
c5aa993b
JM
3129 {
3130 char *string = (char *) alloca (strlen (p->symtab->filename)
3131 + strlen (SYMBOL_NAME (p->symbol))
3132 + 4);
3133 strcpy (string, p->symtab->filename);
3134 strcat (string, ":'");
3135 strcat (string, SYMBOL_NAME (p->symbol));
3136 strcat (string, "'");
3137 break_command (string, from_tty);
3138 print_symbol_info (FUNCTIONS_NAMESPACE,
3139 p->symtab,
3140 p->symbol,
3141 p->block,
3142 p->symtab->filename);
3143 }
c906108c 3144 else
c5aa993b
JM
3145 {
3146 break_command (SYMBOL_NAME (p->msymbol), from_tty);
3147 printf_filtered ("<function, no debug info> %s;\n",
3148 SYMBOL_SOURCE_NAME (p->msymbol));
3149 }
c906108c
SS
3150 }
3151
3152 do_cleanups (old_chain);
3153}
c906108c 3154\f
c5aa993b 3155
c906108c
SS
3156/* Return Nonzero if block a is lexically nested within block b,
3157 or if a and b have the same pc range.
3158 Return zero otherwise. */
3159int
fba45db2 3160contained_in (struct block *a, struct block *b)
c906108c
SS
3161{
3162 if (!a || !b)
3163 return 0;
3164 return BLOCK_START (a) >= BLOCK_START (b)
c5aa993b 3165 && BLOCK_END (a) <= BLOCK_END (b);
c906108c 3166}
c906108c 3167\f
c5aa993b 3168
c906108c
SS
3169/* Helper routine for make_symbol_completion_list. */
3170
3171static int return_val_size;
3172static int return_val_index;
3173static char **return_val;
3174
3175#define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3176 do { \
3177 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3178 /* Put only the mangled name on the list. */ \
3179 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3180 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3181 completion_list_add_name \
3182 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3183 else \
3184 completion_list_add_name \
3185 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3186 } while (0)
3187
3188/* Test to see if the symbol specified by SYMNAME (which is already
c5aa993b
JM
3189 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3190 characters. If so, add it to the current completion list. */
c906108c
SS
3191
3192static void
fba45db2
KB
3193completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3194 char *text, char *word)
c906108c
SS
3195{
3196 int newsize;
3197 int i;
3198
3199 /* clip symbols that cannot match */
3200
3201 if (strncmp (symname, sym_text, sym_text_len) != 0)
3202 {
3203 return;
3204 }
3205
c906108c
SS
3206 /* We have a match for a completion, so add SYMNAME to the current list
3207 of matches. Note that the name is moved to freshly malloc'd space. */
3208
3209 {
3210 char *new;
3211 if (word == sym_text)
3212 {
3213 new = xmalloc (strlen (symname) + 5);
3214 strcpy (new, symname);
3215 }
3216 else if (word > sym_text)
3217 {
3218 /* Return some portion of symname. */
3219 new = xmalloc (strlen (symname) + 5);
3220 strcpy (new, symname + (word - sym_text));
3221 }
3222 else
3223 {
3224 /* Return some of SYM_TEXT plus symname. */
3225 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3226 strncpy (new, word, sym_text - word);
3227 new[sym_text - word] = '\0';
3228 strcat (new, symname);
3229 }
3230
c906108c
SS
3231 if (return_val_index + 3 > return_val_size)
3232 {
3233 newsize = (return_val_size *= 2) * sizeof (char *);
3234 return_val = (char **) xrealloc ((char *) return_val, newsize);
3235 }
3236 return_val[return_val_index++] = new;
3237 return_val[return_val_index] = NULL;
3238 }
3239}
3240
c94fdfd0
EZ
3241/* Return a NULL terminated array of all symbols (regardless of class)
3242 which begin by matching TEXT. If the answer is no symbols, then
3243 the return value is an array which contains only a NULL pointer.
c906108c
SS
3244
3245 Problem: All of the symbols have to be copied because readline frees them.
3246 I'm not going to worry about this; hopefully there won't be that many. */
3247
3248char **
fba45db2 3249make_symbol_completion_list (char *text, char *word)
c906108c
SS
3250{
3251 register struct symbol *sym;
3252 register struct symtab *s;
3253 register struct partial_symtab *ps;
3254 register struct minimal_symbol *msymbol;
3255 register struct objfile *objfile;
3256 register struct block *b, *surrounding_static_block = 0;
3257 register int i, j;
3258 struct partial_symbol **psym;
3259 /* The symbol we are completing on. Points in same buffer as text. */
3260 char *sym_text;
3261 /* Length of sym_text. */
3262 int sym_text_len;
3263
3264 /* Now look for the symbol we are supposed to complete on.
3265 FIXME: This should be language-specific. */
3266 {
3267 char *p;
3268 char quote_found;
3269 char *quote_pos = NULL;
3270
3271 /* First see if this is a quoted string. */
3272 quote_found = '\0';
3273 for (p = text; *p != '\0'; ++p)
3274 {
3275 if (quote_found != '\0')
3276 {
3277 if (*p == quote_found)
3278 /* Found close quote. */
3279 quote_found = '\0';
3280 else if (*p == '\\' && p[1] == quote_found)
3281 /* A backslash followed by the quote character
c5aa993b 3282 doesn't end the string. */
c906108c
SS
3283 ++p;
3284 }
3285 else if (*p == '\'' || *p == '"')
3286 {
3287 quote_found = *p;
3288 quote_pos = p;
3289 }
3290 }
3291 if (quote_found == '\'')
3292 /* A string within single quotes can be a symbol, so complete on it. */
3293 sym_text = quote_pos + 1;
3294 else if (quote_found == '"')
3295 /* A double-quoted string is never a symbol, nor does it make sense
c5aa993b 3296 to complete it any other way. */
c94fdfd0
EZ
3297 {
3298 return_val = (char **) xmalloc (sizeof (char *));
3299 return_val[0] = NULL;
3300 return return_val;
3301 }
c906108c
SS
3302 else
3303 {
3304 /* It is not a quoted string. Break it based on the characters
3305 which are in symbols. */
3306 while (p > text)
3307 {
3308 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3309 --p;
3310 else
3311 break;
3312 }
3313 sym_text = p;
3314 }
3315 }
3316
3317 sym_text_len = strlen (sym_text);
3318
3319 return_val_size = 100;
3320 return_val_index = 0;
3321 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3322 return_val[0] = NULL;
3323
3324 /* Look through the partial symtabs for all symbols which begin
3325 by matching SYM_TEXT. Add each one that you find to the list. */
3326
3327 ALL_PSYMTABS (objfile, ps)
c5aa993b
JM
3328 {
3329 /* If the psymtab's been read in we'll get it when we search
3330 through the blockvector. */
3331 if (ps->readin)
3332 continue;
3333
3334 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3335 psym < (objfile->global_psymbols.list + ps->globals_offset
3336 + ps->n_global_syms);
3337 psym++)
3338 {
3339 /* If interrupted, then quit. */
3340 QUIT;
3341 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3342 }
3343
3344 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3345 psym < (objfile->static_psymbols.list + ps->statics_offset
3346 + ps->n_static_syms);
3347 psym++)
3348 {
3349 QUIT;
3350 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3351 }
3352 }
c906108c
SS
3353
3354 /* At this point scan through the misc symbol vectors and add each
3355 symbol you find to the list. Eventually we want to ignore
3356 anything that isn't a text symbol (everything else will be
3357 handled by the psymtab code above). */
3358
3359 ALL_MSYMBOLS (objfile, msymbol)
c5aa993b
JM
3360 {
3361 QUIT;
3362 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3363 }
c906108c
SS
3364
3365 /* Search upwards from currently selected frame (so that we can
3366 complete on local vars. */
3367
ae767bfb 3368 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
c906108c
SS
3369 {
3370 if (!BLOCK_SUPERBLOCK (b))
3371 {
c5aa993b 3372 surrounding_static_block = b; /* For elmin of dups */
c906108c 3373 }
c5aa993b 3374
c906108c 3375 /* Also catch fields of types defined in this places which match our
c5aa993b 3376 text string. Only complete on types visible from current context. */
c906108c 3377
e88c90f2 3378 ALL_BLOCK_SYMBOLS (b, i, sym)
c906108c 3379 {
c906108c
SS
3380 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3381 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3382 {
3383 struct type *t = SYMBOL_TYPE (sym);
3384 enum type_code c = TYPE_CODE (t);
3385
3386 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3387 {
3388 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3389 {
3390 if (TYPE_FIELD_NAME (t, j))
3391 {
3392 completion_list_add_name (TYPE_FIELD_NAME (t, j),
c5aa993b 3393 sym_text, sym_text_len, text, word);
c906108c
SS
3394 }
3395 }
3396 }
3397 }
3398 }
3399 }
3400
3401 /* Go through the symtabs and check the externs and statics for
3402 symbols which match. */
3403
3404 ALL_SYMTABS (objfile, s)
c5aa993b
JM
3405 {
3406 QUIT;
3407 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
e88c90f2 3408 ALL_BLOCK_SYMBOLS (b, i, sym)
c5aa993b 3409 {
c5aa993b
JM
3410 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3411 }
3412 }
c906108c
SS
3413
3414 ALL_SYMTABS (objfile, s)
c5aa993b
JM
3415 {
3416 QUIT;
3417 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3418 /* Don't do this block twice. */
3419 if (b == surrounding_static_block)
3420 continue;
e88c90f2 3421 ALL_BLOCK_SYMBOLS (b, i, sym)
c5aa993b 3422 {
c5aa993b
JM
3423 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3424 }
3425 }
c906108c
SS
3426
3427 return (return_val);
3428}
3429
c94fdfd0
EZ
3430/* Like make_symbol_completion_list, but returns a list of symbols
3431 defined in a source file FILE. */
3432
3433char **
3434make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3435{
3436 register struct symbol *sym;
3437 register struct symtab *s;
3438 register struct block *b;
3439 register int i;
3440 /* The symbol we are completing on. Points in same buffer as text. */
3441 char *sym_text;
3442 /* Length of sym_text. */
3443 int sym_text_len;
3444
3445 /* Now look for the symbol we are supposed to complete on.
3446 FIXME: This should be language-specific. */
3447 {
3448 char *p;
3449 char quote_found;
3450 char *quote_pos = NULL;
3451
3452 /* First see if this is a quoted string. */
3453 quote_found = '\0';
3454 for (p = text; *p != '\0'; ++p)
3455 {
3456 if (quote_found != '\0')
3457 {
3458 if (*p == quote_found)
3459 /* Found close quote. */
3460 quote_found = '\0';
3461 else if (*p == '\\' && p[1] == quote_found)
3462 /* A backslash followed by the quote character
3463 doesn't end the string. */
3464 ++p;
3465 }
3466 else if (*p == '\'' || *p == '"')
3467 {
3468 quote_found = *p;
3469 quote_pos = p;
3470 }
3471 }
3472 if (quote_found == '\'')
3473 /* A string within single quotes can be a symbol, so complete on it. */
3474 sym_text = quote_pos + 1;
3475 else if (quote_found == '"')
3476 /* A double-quoted string is never a symbol, nor does it make sense
3477 to complete it any other way. */
3478 {
3479 return_val = (char **) xmalloc (sizeof (char *));
3480 return_val[0] = NULL;
3481 return return_val;
3482 }
3483 else
3484 {
3485 /* It is not a quoted string. Break it based on the characters
3486 which are in symbols. */
3487 while (p > text)
3488 {
3489 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3490 --p;
3491 else
3492 break;
3493 }
3494 sym_text = p;
3495 }
3496 }
3497
3498 sym_text_len = strlen (sym_text);
3499
3500 return_val_size = 10;
3501 return_val_index = 0;
3502 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3503 return_val[0] = NULL;
3504
3505 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3506 in). */
3507 s = lookup_symtab (srcfile);
3508 if (s == NULL)
3509 {
3510 /* Maybe they typed the file with leading directories, while the
3511 symbol tables record only its basename. */
31889e00 3512 const char *tail = lbasename (srcfile);
c94fdfd0
EZ
3513
3514 if (tail > srcfile)
3515 s = lookup_symtab (tail);
3516 }
3517
3518 /* If we have no symtab for that file, return an empty list. */
3519 if (s == NULL)
3520 return (return_val);
3521
3522 /* Go through this symtab and check the externs and statics for
3523 symbols which match. */
3524
3525 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
e88c90f2 3526 ALL_BLOCK_SYMBOLS (b, i, sym)
c94fdfd0 3527 {
c94fdfd0
EZ
3528 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3529 }
3530
3531 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
e88c90f2 3532 ALL_BLOCK_SYMBOLS (b, i, sym)
c94fdfd0 3533 {
c94fdfd0
EZ
3534 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3535 }
3536
3537 return (return_val);
3538}
3539
3540/* A helper function for make_source_files_completion_list. It adds
3541 another file name to a list of possible completions, growing the
3542 list as necessary. */
3543
3544static void
3545add_filename_to_list (const char *fname, char *text, char *word,
3546 char ***list, int *list_used, int *list_alloced)
3547{
3548 char *new;
3549 size_t fnlen = strlen (fname);
3550
3551 if (*list_used + 1 >= *list_alloced)
3552 {
3553 *list_alloced *= 2;
3554 *list = (char **) xrealloc ((char *) *list,
3555 *list_alloced * sizeof (char *));
3556 }
3557
3558 if (word == text)
3559 {
3560 /* Return exactly fname. */
3561 new = xmalloc (fnlen + 5);
3562 strcpy (new, fname);
3563 }
3564 else if (word > text)
3565 {
3566 /* Return some portion of fname. */
3567 new = xmalloc (fnlen + 5);
3568 strcpy (new, fname + (word - text));
3569 }
3570 else
3571 {
3572 /* Return some of TEXT plus fname. */
3573 new = xmalloc (fnlen + (text - word) + 5);
3574 strncpy (new, word, text - word);
3575 new[text - word] = '\0';
3576 strcat (new, fname);
3577 }
3578 (*list)[*list_used] = new;
3579 (*list)[++*list_used] = NULL;
3580}
3581
3582static int
3583not_interesting_fname (const char *fname)
3584{
3585 static const char *illegal_aliens[] = {
3586 "_globals_", /* inserted by coff_symtab_read */
3587 NULL
3588 };
3589 int i;
3590
3591 for (i = 0; illegal_aliens[i]; i++)
3592 {
3593 if (strcmp (fname, illegal_aliens[i]) == 0)
3594 return 1;
3595 }
3596 return 0;
3597}
3598
3599/* Return a NULL terminated array of all source files whose names
3600 begin with matching TEXT. The file names are looked up in the
3601 symbol tables of this program. If the answer is no matchess, then
3602 the return value is an array which contains only a NULL pointer. */
3603
3604char **
3605make_source_files_completion_list (char *text, char *word)
3606{
3607 register struct symtab *s;
3608 register struct partial_symtab *ps;
3609 register struct objfile *objfile;
3610 int first = 1;
3611 int list_alloced = 1;
3612 int list_used = 0;
3613 size_t text_len = strlen (text);
3614 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
31889e00 3615 const char *base_name;
c94fdfd0
EZ
3616
3617 list[0] = NULL;
3618
3619 if (!have_full_symbols () && !have_partial_symbols ())
3620 return list;
3621
3622 ALL_SYMTABS (objfile, s)
3623 {
3624 if (not_interesting_fname (s->filename))
3625 continue;
3626 if (!filename_seen (s->filename, 1, &first)
3627#if HAVE_DOS_BASED_FILE_SYSTEM
3628 && strncasecmp (s->filename, text, text_len) == 0
3629#else
3630 && strncmp (s->filename, text, text_len) == 0
3631#endif
3632 )
3633 {
3634 /* This file matches for a completion; add it to the current
3635 list of matches. */
3636 add_filename_to_list (s->filename, text, word,
3637 &list, &list_used, &list_alloced);
3638 }
3639 else
3640 {
3641 /* NOTE: We allow the user to type a base name when the
3642 debug info records leading directories, but not the other
3643 way around. This is what subroutines of breakpoint
3644 command do when they parse file names. */
31889e00 3645 base_name = lbasename (s->filename);
c94fdfd0
EZ
3646 if (base_name != s->filename
3647 && !filename_seen (base_name, 1, &first)
3648#if HAVE_DOS_BASED_FILE_SYSTEM
3649 && strncasecmp (base_name, text, text_len) == 0
3650#else
3651 && strncmp (base_name, text, text_len) == 0
3652#endif
3653 )
3654 add_filename_to_list (base_name, text, word,
3655 &list, &list_used, &list_alloced);
3656 }
3657 }
3658
3659 ALL_PSYMTABS (objfile, ps)
3660 {
3661 if (not_interesting_fname (ps->filename))
3662 continue;
3663 if (!ps->readin)
3664 {
3665 if (!filename_seen (ps->filename, 1, &first)
3666#if HAVE_DOS_BASED_FILE_SYSTEM
3667 && strncasecmp (ps->filename, text, text_len) == 0
3668#else
3669 && strncmp (ps->filename, text, text_len) == 0
3670#endif
3671 )
3672 {
3673 /* This file matches for a completion; add it to the
3674 current list of matches. */
3675 add_filename_to_list (ps->filename, text, word,
3676 &list, &list_used, &list_alloced);
3677
3678 }
3679 else
3680 {
31889e00 3681 base_name = lbasename (ps->filename);
c94fdfd0
EZ
3682 if (base_name != ps->filename
3683 && !filename_seen (base_name, 1, &first)
3684#if HAVE_DOS_BASED_FILE_SYSTEM
3685 && strncasecmp (base_name, text, text_len) == 0
3686#else
3687 && strncmp (base_name, text, text_len) == 0
3688#endif
3689 )
3690 add_filename_to_list (base_name, text, word,
3691 &list, &list_used, &list_alloced);
3692 }
3693 }
3694 }
3695
3696 return list;
3697}
3698
c906108c
SS
3699/* Determine if PC is in the prologue of a function. The prologue is the area
3700 between the first instruction of a function, and the first executable line.
3701 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3702
3703 If non-zero, func_start is where we think the prologue starts, possibly
3704 by previous examination of symbol table information.
3705 */
3706
3707int
fba45db2 3708in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
c906108c
SS
3709{
3710 struct symtab_and_line sal;
3711 CORE_ADDR func_addr, func_end;
3712
54cf9c03
EZ
3713 /* We have several sources of information we can consult to figure
3714 this out.
3715 - Compilers usually emit line number info that marks the prologue
3716 as its own "source line". So the ending address of that "line"
3717 is the end of the prologue. If available, this is the most
3718 reliable method.
3719 - The minimal symbols and partial symbols, which can usually tell
3720 us the starting and ending addresses of a function.
3721 - If we know the function's start address, we can call the
3722 architecture-defined SKIP_PROLOGUE function to analyze the
3723 instruction stream and guess where the prologue ends.
3724 - Our `func_start' argument; if non-zero, this is the caller's
3725 best guess as to the function's entry point. At the time of
3726 this writing, handle_inferior_event doesn't get this right, so
3727 it should be our last resort. */
3728
3729 /* Consult the partial symbol table, to find which function
3730 the PC is in. */
3731 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3732 {
3733 CORE_ADDR prologue_end;
c906108c 3734
54cf9c03
EZ
3735 /* We don't even have minsym information, so fall back to using
3736 func_start, if given. */
3737 if (! func_start)
3738 return 1; /* We *might* be in a prologue. */
c906108c 3739
54cf9c03 3740 prologue_end = SKIP_PROLOGUE (func_start);
c906108c 3741
54cf9c03
EZ
3742 return func_start <= pc && pc < prologue_end;
3743 }
c906108c 3744
54cf9c03
EZ
3745 /* If we have line number information for the function, that's
3746 usually pretty reliable. */
3747 sal = find_pc_line (func_addr, 0);
c906108c 3748
54cf9c03
EZ
3749 /* Now sal describes the source line at the function's entry point,
3750 which (by convention) is the prologue. The end of that "line",
3751 sal.end, is the end of the prologue.
3752
3753 Note that, for functions whose source code is all on a single
3754 line, the line number information doesn't always end up this way.
3755 So we must verify that our purported end-of-prologue address is
3756 *within* the function, not at its start or end. */
3757 if (sal.line == 0
3758 || sal.end <= func_addr
3759 || func_end <= sal.end)
3760 {
3761 /* We don't have any good line number info, so use the minsym
3762 information, together with the architecture-specific prologue
3763 scanning code. */
3764 CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr);
c906108c 3765
54cf9c03
EZ
3766 return func_addr <= pc && pc < prologue_end;
3767 }
c906108c 3768
54cf9c03
EZ
3769 /* We have line number info, and it looks good. */
3770 return func_addr <= pc && pc < sal.end;
c906108c
SS
3771}
3772
3773
3774/* Begin overload resolution functions */
228c6d41
DJ
3775
3776static char *
3777remove_params (const char *demangled_name)
3778{
3779 const char *argp;
3780 char *new_name;
3781 int depth;
3782
3783 if (demangled_name == NULL)
3784 return NULL;
3785
3786 /* First find the end of the arg list. */
3787 argp = strrchr (demangled_name, ')');
3788 if (argp == NULL)
3789 return NULL;
3790
3791 /* Back up to the beginning. */
3792 depth = 1;
3793
3794 while (argp-- > demangled_name)
3795 {
3796 if (*argp == ')')
3797 depth ++;
3798 else if (*argp == '(')
3799 {
3800 depth --;
3801
3802 if (depth == 0)
3803 break;
3804 }
3805 }
3806 if (depth != 0)
3807 internal_error (__FILE__, __LINE__,
3808 "bad demangled name %s\n", demangled_name);
3809 while (argp[-1] == ' ' && argp > demangled_name)
3810 argp --;
3811
3812 new_name = xmalloc (argp - demangled_name + 1);
3813 memcpy (new_name, demangled_name, argp - demangled_name);
3814 new_name[argp - demangled_name] = '\0';
3815 return new_name;
3816}
3817
c906108c
SS
3818/* Helper routine for make_symbol_completion_list. */
3819
3820static int sym_return_val_size;
3821static int sym_return_val_index;
3822static struct symbol **sym_return_val;
3823
3824/* Test to see if the symbol specified by SYMNAME (which is already
c5aa993b
JM
3825 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3826 characters. If so, add it to the current completion list. */
c906108c
SS
3827
3828static void
fba45db2 3829overload_list_add_symbol (struct symbol *sym, char *oload_name)
c906108c
SS
3830{
3831 int newsize;
3832 int i;
228c6d41
DJ
3833 char *sym_name;
3834
3835 /* If there is no type information, we can't do anything, so skip */
3836 if (SYMBOL_TYPE (sym) == NULL)
3837 return;
3838
3839 /* skip any symbols that we've already considered. */
3840 for (i = 0; i < sym_return_val_index; ++i)
3841 if (!strcmp (SYMBOL_NAME (sym), SYMBOL_NAME (sym_return_val[i])))
3842 return;
c906108c
SS
3843
3844 /* Get the demangled name without parameters */
228c6d41 3845 sym_name = remove_params (SYMBOL_DEMANGLED_NAME (sym));
c906108c 3846 if (!sym_name)
228c6d41 3847 return;
c906108c
SS
3848
3849 /* skip symbols that cannot match */
3850 if (strcmp (sym_name, oload_name) != 0)
917317f4 3851 {
b8c9b27d 3852 xfree (sym_name);
917317f4
JM
3853 return;
3854 }
c906108c 3855
228c6d41 3856 xfree (sym_name);
c906108c
SS
3857
3858 /* We have a match for an overload instance, so add SYM to the current list
3859 * of overload instances */
3860 if (sym_return_val_index + 3 > sym_return_val_size)
3861 {
3862 newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *);
3863 sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize);
3864 }
3865 sym_return_val[sym_return_val_index++] = sym;
3866 sym_return_val[sym_return_val_index] = NULL;
c906108c
SS
3867}
3868
3869/* Return a null-terminated list of pointers to function symbols that
3870 * match name of the supplied symbol FSYM.
3871 * This is used in finding all overloaded instances of a function name.
3872 * This has been modified from make_symbol_completion_list. */
3873
3874
3875struct symbol **
fba45db2 3876make_symbol_overload_list (struct symbol *fsym)
c906108c
SS
3877{
3878 register struct symbol *sym;
3879 register struct symtab *s;
3880 register struct partial_symtab *ps;
c906108c
SS
3881 register struct objfile *objfile;
3882 register struct block *b, *surrounding_static_block = 0;
d4f3574e 3883 register int i;
c906108c
SS
3884 /* The name we are completing on. */
3885 char *oload_name = NULL;
3886 /* Length of name. */
3887 int oload_name_len = 0;
3888
228c6d41 3889 /* Look for the symbol we are supposed to complete on. */
c906108c 3890
228c6d41 3891 oload_name = remove_params (SYMBOL_DEMANGLED_NAME (fsym));
c906108c
SS
3892 if (!oload_name)
3893 {
228c6d41
DJ
3894 sym_return_val_size = 1;
3895 sym_return_val = (struct symbol **) xmalloc (2 * sizeof (struct symbol *));
3896 sym_return_val[0] = fsym;
3897 sym_return_val[1] = NULL;
3898
3899 return sym_return_val;
c906108c
SS
3900 }
3901 oload_name_len = strlen (oload_name);
3902
3903 sym_return_val_size = 100;
3904 sym_return_val_index = 0;
3905 sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *));
3906 sym_return_val[0] = NULL;
3907
3908 /* Look through the partial symtabs for all symbols which begin
917317f4 3909 by matching OLOAD_NAME. Make sure we read that symbol table in. */
c906108c
SS
3910
3911 ALL_PSYMTABS (objfile, ps)
c5aa993b 3912 {
d4f3574e
SS
3913 struct partial_symbol **psym;
3914
c5aa993b
JM
3915 /* If the psymtab's been read in we'll get it when we search
3916 through the blockvector. */
3917 if (ps->readin)
3918 continue;
3919
3920 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3921 psym < (objfile->global_psymbols.list + ps->globals_offset
3922 + ps->n_global_syms);
3923 psym++)
3924 {
3925 /* If interrupted, then quit. */
3926 QUIT;
917317f4
JM
3927 /* This will cause the symbol table to be read if it has not yet been */
3928 s = PSYMTAB_TO_SYMTAB (ps);
c5aa993b
JM
3929 }
3930
3931 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3932 psym < (objfile->static_psymbols.list + ps->statics_offset
3933 + ps->n_static_syms);
3934 psym++)
3935 {
3936 QUIT;
917317f4
JM
3937 /* This will cause the symbol table to be read if it has not yet been */
3938 s = PSYMTAB_TO_SYMTAB (ps);
c5aa993b
JM
3939 }
3940 }
c906108c 3941
c906108c
SS
3942 /* Search upwards from currently selected frame (so that we can
3943 complete on local vars. */
3944
ae767bfb 3945 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
c906108c
SS
3946 {
3947 if (!BLOCK_SUPERBLOCK (b))
3948 {
c5aa993b 3949 surrounding_static_block = b; /* For elimination of dups */
c906108c 3950 }
c5aa993b 3951
c906108c 3952 /* Also catch fields of types defined in this places which match our
c5aa993b 3953 text string. Only complete on types visible from current context. */
c906108c 3954
e88c90f2 3955 ALL_BLOCK_SYMBOLS (b, i, sym)
c906108c 3956 {
c906108c
SS
3957 overload_list_add_symbol (sym, oload_name);
3958 }
3959 }
3960
3961 /* Go through the symtabs and check the externs and statics for
3962 symbols which match. */
3963
3964 ALL_SYMTABS (objfile, s)
c5aa993b
JM
3965 {
3966 QUIT;
3967 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
e88c90f2 3968 ALL_BLOCK_SYMBOLS (b, i, sym)
c5aa993b 3969 {
c5aa993b
JM
3970 overload_list_add_symbol (sym, oload_name);
3971 }
3972 }
c906108c
SS
3973
3974 ALL_SYMTABS (objfile, s)
c5aa993b
JM
3975 {
3976 QUIT;
3977 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3978 /* Don't do this block twice. */
3979 if (b == surrounding_static_block)
3980 continue;
e88c90f2 3981 ALL_BLOCK_SYMBOLS (b, i, sym)
c5aa993b 3982 {
c5aa993b
JM
3983 overload_list_add_symbol (sym, oload_name);
3984 }
3985 }
c906108c 3986
b8c9b27d 3987 xfree (oload_name);
c906108c
SS
3988
3989 return (sym_return_val);
3990}
3991
3992/* End of overload resolution functions */
c906108c 3993\f
50641945
FN
3994struct symtabs_and_lines
3995decode_line_spec (char *string, int funfirstline)
3996{
3997 struct symtabs_and_lines sals;
0378c332
FN
3998 struct symtab_and_line cursal;
3999
50641945
FN
4000 if (string == 0)
4001 error ("Empty line specification.");
0378c332
FN
4002
4003 /* We use whatever is set as the current source line. We do not try
4004 and get a default or it will recursively call us! */
4005 cursal = get_current_source_symtab_and_line ();
4006
50641945 4007 sals = decode_line_1 (&string, funfirstline,
0378c332 4008 cursal.symtab, cursal.line,
50641945 4009 (char ***) NULL);
0378c332 4010
50641945
FN
4011 if (*string)
4012 error ("Junk at end of line specification: %s", string);
4013 return sals;
4014}
c5aa993b 4015
51cc5b07
AC
4016/* Track MAIN */
4017static char *name_of_main;
4018
4019void
4020set_main_name (const char *name)
4021{
4022 if (name_of_main != NULL)
4023 {
4024 xfree (name_of_main);
4025 name_of_main = NULL;
4026 }
4027 if (name != NULL)
4028 {
4029 name_of_main = xstrdup (name);
4030 }
4031}
4032
4033char *
4034main_name (void)
4035{
4036 if (name_of_main != NULL)
4037 return name_of_main;
4038 else
4039 return "main";
4040}
4041
4042
c906108c 4043void
fba45db2 4044_initialize_symtab (void)
c906108c
SS
4045{
4046 add_info ("variables", variables_info,
c5aa993b 4047 "All global and static variable names, or those matching REGEXP.");
c906108c 4048 if (dbx_commands)
c5aa993b
JM
4049 add_com ("whereis", class_info, variables_info,
4050 "All global and static variable names, or those matching REGEXP.");
c906108c
SS
4051
4052 add_info ("functions", functions_info,
4053 "All function names, or those matching REGEXP.");
4054
357e46e7 4055
c906108c
SS
4056 /* FIXME: This command has at least the following problems:
4057 1. It prints builtin types (in a very strange and confusing fashion).
4058 2. It doesn't print right, e.g. with
c5aa993b
JM
4059 typedef struct foo *FOO
4060 type_print prints "FOO" when we want to make it (in this situation)
4061 print "struct foo *".
c906108c
SS
4062 I also think "ptype" or "whatis" is more likely to be useful (but if
4063 there is much disagreement "info types" can be fixed). */
4064 add_info ("types", types_info,
4065 "All type names, or those matching REGEXP.");
4066
4067#if 0
4068 add_info ("methods", methods_info,
4069 "All method names, or those matching REGEXP::REGEXP.\n\
4070If the class qualifier is omitted, it is assumed to be the current scope.\n\
4071If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4072are listed.");
4073#endif
4074 add_info ("sources", sources_info,
4075 "Source files in the program.");
4076
4077 add_com ("rbreak", class_breakpoint, rbreak_command,
c5aa993b 4078 "Set a breakpoint for all functions matching REGEXP.");
c906108c
SS
4079
4080 if (xdb_commands)
4081 {
4082 add_com ("lf", class_info, sources_info, "Source files in the program");
4083 add_com ("lg", class_info, variables_info,
c5aa993b 4084 "All global and static variable names, or those matching REGEXP.");
c906108c
SS
4085 }
4086
4087 /* Initialize the one built-in type that isn't language dependent... */
4088 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4089 "<unknown type>", (struct objfile *) NULL);
4090}
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