1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
5 Free Software Foundation, Inc.
7 This file is part of GDB.
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.
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.
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. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
42 #include "filenames.h" /* for FILENAME_CMP */
43 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
58 /* Prototypes for local functions */
60 static void completion_list_add_name (char *, char *, int, char *, char *);
62 static void rbreak_command (char *, int);
64 static void types_info (char *, int);
66 static void functions_info (char *, int);
68 static void variables_info (char *, int);
70 static void sources_info (char *, int);
72 static void output_source_filename (char *, int *);
74 static int find_line_common (struct linetable *, int, int *);
76 /* This one is used by linespec.c */
78 char *operator_chars (char *p, char **end);
80 static struct symbol *lookup_symbol_aux (const char *name,
81 const char *linkage_name,
82 const struct block *block,
83 const domain_enum domain,
84 int *is_a_field_of_this,
85 struct symtab **symtab);
88 struct symbol *lookup_symbol_aux_local (const char *name,
89 const char *linkage_name,
90 const struct block *block,
91 const domain_enum domain,
92 struct symtab **symtab);
95 struct symbol *lookup_symbol_aux_symtabs (int block_index,
97 const char *linkage_name,
98 const domain_enum domain,
99 struct symtab **symtab);
102 struct symbol *lookup_symbol_aux_psymtabs (int block_index,
104 const char *linkage_name,
105 const domain_enum domain,
106 struct symtab **symtab);
110 struct symbol *lookup_symbol_aux_minsyms (const char *name,
111 const char *linkage_name,
112 const domain_enum domain,
113 int *is_a_field_of_this,
114 struct symtab **symtab);
117 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
118 /* Signals the presence of objects compiled by HP compilers */
119 int hp_som_som_object_present = 0;
121 static void fixup_section (struct general_symbol_info *, struct objfile *);
123 static int file_matches (char *, char **, int);
125 static void print_symbol_info (domain_enum,
126 struct symtab *, struct symbol *, int, char *);
128 static void print_msymbol_info (struct minimal_symbol *);
130 static void symtab_symbol_info (char *, domain_enum, int);
132 void _initialize_symtab (void);
136 /* The single non-language-specific builtin type */
137 struct type *builtin_type_error;
139 /* Block in which the most recently searched-for symbol was found.
140 Might be better to make this a parameter to lookup_symbol and
143 const struct block *block_found;
145 /* Check for a symtab of a specific name; first in symtabs, then in
146 psymtabs. *If* there is no '/' in the name, a match after a '/'
147 in the symtab filename will also work. */
150 lookup_symtab (const char *name)
153 struct partial_symtab *ps;
154 struct objfile *objfile;
155 char *real_path = NULL;
156 char *full_path = NULL;
158 /* Here we are interested in canonicalizing an absolute path, not
159 absolutizing a relative path. */
160 if (IS_ABSOLUTE_PATH (name))
162 full_path = xfullpath (name);
163 make_cleanup (xfree, full_path);
164 real_path = gdb_realpath (name);
165 make_cleanup (xfree, real_path);
170 /* First, search for an exact match */
172 ALL_SYMTABS (objfile, s)
174 if (FILENAME_CMP (name, s->filename) == 0)
179 /* If the user gave us an absolute path, try to find the file in
180 this symtab and use its absolute path. */
182 if (full_path != NULL)
184 const char *fp = symtab_to_filename (s);
185 if (FILENAME_CMP (full_path, fp) == 0)
191 if (real_path != NULL)
193 char *rp = gdb_realpath (symtab_to_filename (s));
194 make_cleanup (xfree, rp);
195 if (FILENAME_CMP (real_path, rp) == 0)
202 /* Now, search for a matching tail (only if name doesn't have any dirs) */
204 if (lbasename (name) == name)
205 ALL_SYMTABS (objfile, s)
207 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
211 /* Same search rules as above apply here, but now we look thru the
214 ps = lookup_partial_symtab (name);
219 error ("Internal: readin %s pst for `%s' found when no symtab found.",
222 s = PSYMTAB_TO_SYMTAB (ps);
227 /* At this point, we have located the psymtab for this file, but
228 the conversion to a symtab has failed. This usually happens
229 when we are looking up an include file. In this case,
230 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
231 been created. So, we need to run through the symtabs again in
232 order to find the file.
233 XXX - This is a crock, and should be fixed inside of the the
234 symbol parsing routines. */
238 /* Lookup the partial symbol table of a source file named NAME.
239 *If* there is no '/' in the name, a match after a '/'
240 in the psymtab filename will also work. */
242 struct partial_symtab *
243 lookup_partial_symtab (const char *name)
245 struct partial_symtab *pst;
246 struct objfile *objfile;
247 char *full_path = NULL;
248 char *real_path = NULL;
250 /* Here we are interested in canonicalizing an absolute path, not
251 absolutizing a relative path. */
252 if (IS_ABSOLUTE_PATH (name))
254 full_path = xfullpath (name);
255 make_cleanup (xfree, full_path);
256 real_path = gdb_realpath (name);
257 make_cleanup (xfree, real_path);
260 ALL_PSYMTABS (objfile, pst)
262 if (FILENAME_CMP (name, pst->filename) == 0)
267 /* If the user gave us an absolute path, try to find the file in
268 this symtab and use its absolute path. */
269 if (full_path != NULL)
271 if (pst->fullname == NULL)
272 source_full_path_of (pst->filename, &pst->fullname);
273 if (pst->fullname != NULL
274 && FILENAME_CMP (full_path, pst->fullname) == 0)
280 if (real_path != NULL)
283 if (pst->fullname == NULL)
284 source_full_path_of (pst->filename, &pst->fullname);
285 if (pst->fullname != NULL)
287 rp = gdb_realpath (pst->fullname);
288 make_cleanup (xfree, rp);
290 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
297 /* Now, search for a matching tail (only if name doesn't have any dirs) */
299 if (lbasename (name) == name)
300 ALL_PSYMTABS (objfile, pst)
302 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
309 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
310 full method name, which consist of the class name (from T), the unadorned
311 method name from METHOD_ID, and the signature for the specific overload,
312 specified by SIGNATURE_ID. Note that this function is g++ specific. */
315 gdb_mangle_name (struct type *type, int method_id, int signature_id)
317 int mangled_name_len;
319 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
320 struct fn_field *method = &f[signature_id];
321 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
322 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
323 char *newname = type_name_no_tag (type);
325 /* Does the form of physname indicate that it is the full mangled name
326 of a constructor (not just the args)? */
327 int is_full_physname_constructor;
330 int is_destructor = is_destructor_name (physname);
331 /* Need a new type prefix. */
332 char *const_prefix = method->is_const ? "C" : "";
333 char *volatile_prefix = method->is_volatile ? "V" : "";
335 int len = (newname == NULL ? 0 : strlen (newname));
337 /* Nothing to do if physname already contains a fully mangled v3 abi name
338 or an operator name. */
339 if ((physname[0] == '_' && physname[1] == 'Z')
340 || is_operator_name (field_name))
341 return xstrdup (physname);
343 is_full_physname_constructor = is_constructor_name (physname);
346 is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0);
349 is_destructor = (strncmp (physname, "__dt", 4) == 0);
351 if (is_destructor || is_full_physname_constructor)
353 mangled_name = (char *) xmalloc (strlen (physname) + 1);
354 strcpy (mangled_name, physname);
360 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
362 else if (physname[0] == 't' || physname[0] == 'Q')
364 /* The physname for template and qualified methods already includes
366 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
372 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
374 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
375 + strlen (buf) + len + strlen (physname) + 1);
378 mangled_name = (char *) xmalloc (mangled_name_len);
380 mangled_name[0] = '\0';
382 strcpy (mangled_name, field_name);
384 strcat (mangled_name, buf);
385 /* If the class doesn't have a name, i.e. newname NULL, then we just
386 mangle it using 0 for the length of the class. Thus it gets mangled
387 as something starting with `::' rather than `classname::'. */
389 strcat (mangled_name, newname);
391 strcat (mangled_name, physname);
392 return (mangled_name);
396 /* Initialize the language dependent portion of a symbol
397 depending upon the language for the symbol. */
399 symbol_init_language_specific (struct general_symbol_info *gsymbol,
400 enum language language)
402 gsymbol->language = language;
403 if (gsymbol->language == language_cplus
404 || gsymbol->language == language_java
405 || gsymbol->language == language_objc)
407 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
411 memset (&gsymbol->language_specific, 0,
412 sizeof (gsymbol->language_specific));
416 /* Functions to initialize a symbol's mangled name. */
418 /* Create the hash table used for demangled names. Each hash entry is
419 a pair of strings; one for the mangled name and one for the demangled
420 name. The entry is hashed via just the mangled name. */
423 create_demangled_names_hash (struct objfile *objfile)
425 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
426 The hash table code will round this up to the next prime number.
427 Choosing a much larger table size wastes memory, and saves only about
428 1% in symbol reading. */
430 objfile->demangled_names_hash = htab_create_alloc_ex
431 (256, htab_hash_string, (int (*) (const void *, const void *)) streq,
432 NULL, objfile->md, xmcalloc, xmfree);
435 /* Try to determine the demangled name for a symbol, based on the
436 language of that symbol. If the language is set to language_auto,
437 it will attempt to find any demangling algorithm that works and
438 then set the language appropriately. The returned name is allocated
439 by the demangler and should be xfree'd. */
442 symbol_find_demangled_name (struct general_symbol_info *gsymbol,
445 char *demangled = NULL;
447 if (gsymbol->language == language_unknown)
448 gsymbol->language = language_auto;
450 if (gsymbol->language == language_objc
451 || gsymbol->language == language_auto)
454 objc_demangle (mangled, 0);
455 if (demangled != NULL)
457 gsymbol->language = language_objc;
461 if (gsymbol->language == language_cplus
462 || gsymbol->language == language_auto)
465 cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
466 if (demangled != NULL)
468 gsymbol->language = language_cplus;
472 if (gsymbol->language == language_java)
475 cplus_demangle (mangled,
476 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
477 if (demangled != NULL)
479 gsymbol->language = language_java;
486 /* Set both the mangled and demangled (if any) names for GSYMBOL based
487 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
488 is used, and the memory comes from that objfile's symbol_obstack.
489 LINKAGE_NAME is copied, so the pointer can be discarded after
490 calling this function. */
492 /* We have to be careful when dealing with Java names: when we run
493 into a Java minimal symbol, we don't know it's a Java symbol, so it
494 gets demangled as a C++ name. This is unfortunate, but there's not
495 much we can do about it: but when demangling partial symbols and
496 regular symbols, we'd better not reuse the wrong demangled name.
497 (See PR gdb/1039.) We solve this by putting a distinctive prefix
498 on Java names when storing them in the hash table. */
500 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
501 don't mind the Java prefix so much: different languages have
502 different demangling requirements, so it's only natural that we
503 need to keep language data around in our demangling cache. But
504 it's not good that the minimal symbol has the wrong demangled name.
505 Unfortunately, I can't think of any easy solution to that
508 #define JAVA_PREFIX "##JAVA$$"
509 #define JAVA_PREFIX_LEN 8
512 symbol_set_names (struct general_symbol_info *gsymbol,
513 const char *linkage_name, int len, struct objfile *objfile)
516 /* A 0-terminated copy of the linkage name. */
517 const char *linkage_name_copy;
518 /* A copy of the linkage name that might have a special Java prefix
519 added to it, for use when looking names up in the hash table. */
520 const char *lookup_name;
521 /* The length of lookup_name. */
524 if (objfile->demangled_names_hash == NULL)
525 create_demangled_names_hash (objfile);
527 /* The stabs reader generally provides names that are not
528 NUL-terminated; most of the other readers don't do this, so we
529 can just use the given copy, unless we're in the Java case. */
530 if (gsymbol->language == language_java)
533 lookup_len = len + JAVA_PREFIX_LEN;
535 alloc_name = alloca (lookup_len + 1);
536 memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN);
537 memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len);
538 alloc_name[lookup_len] = '\0';
540 lookup_name = alloc_name;
541 linkage_name_copy = alloc_name + JAVA_PREFIX_LEN;
543 else if (linkage_name[len] != '\0')
548 alloc_name = alloca (lookup_len + 1);
549 memcpy (alloc_name, linkage_name, len);
550 alloc_name[lookup_len] = '\0';
552 lookup_name = alloc_name;
553 linkage_name_copy = alloc_name;
558 lookup_name = linkage_name;
559 linkage_name_copy = linkage_name;
562 slot = (char **) htab_find_slot (objfile->demangled_names_hash,
563 lookup_name, INSERT);
565 /* If this name is not in the hash table, add it. */
568 char *demangled_name = symbol_find_demangled_name (gsymbol,
570 int demangled_len = demangled_name ? strlen (demangled_name) : 0;
572 /* If there is a demangled name, place it right after the mangled name.
573 Otherwise, just place a second zero byte after the end of the mangled
575 *slot = obstack_alloc (&objfile->symbol_obstack,
576 lookup_len + demangled_len + 2);
577 memcpy (*slot, lookup_name, lookup_len + 1);
578 if (demangled_name != NULL)
580 memcpy (*slot + lookup_len + 1, demangled_name, demangled_len + 1);
581 xfree (demangled_name);
584 (*slot)[lookup_len + 1] = '\0';
587 gsymbol->name = *slot + lookup_len - len;
588 if ((*slot)[lookup_len + 1] != '\0')
589 gsymbol->language_specific.cplus_specific.demangled_name
590 = &(*slot)[lookup_len + 1];
592 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
595 /* Initialize the demangled name of GSYMBOL if possible. Any required space
596 to store the name is obtained from the specified obstack. The function
597 symbol_set_names, above, should be used instead where possible for more
598 efficient memory usage. */
601 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
602 struct obstack *obstack)
604 char *mangled = gsymbol->name;
605 char *demangled = NULL;
607 demangled = symbol_find_demangled_name (gsymbol, mangled);
608 if (gsymbol->language == language_cplus
609 || gsymbol->language == language_java
610 || gsymbol->language == language_objc)
614 gsymbol->language_specific.cplus_specific.demangled_name
615 = obsavestring (demangled, strlen (demangled), obstack);
619 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
623 /* Unknown language; just clean up quietly. */
629 /* Return the source code name of a symbol. In languages where
630 demangling is necessary, this is the demangled name. */
633 symbol_natural_name (const struct general_symbol_info *gsymbol)
635 if ((gsymbol->language == language_cplus
636 || gsymbol->language == language_java
637 || gsymbol->language == language_objc)
638 && (gsymbol->language_specific.cplus_specific.demangled_name != NULL))
640 return gsymbol->language_specific.cplus_specific.demangled_name;
644 return gsymbol->name;
648 /* Return the demangled name for a symbol based on the language for
649 that symbol. If no demangled name exists, return NULL. */
651 symbol_demangled_name (struct general_symbol_info *gsymbol)
653 if (gsymbol->language == language_cplus
654 || gsymbol->language == language_java
655 || gsymbol->language == language_objc)
656 return gsymbol->language_specific.cplus_specific.demangled_name;
662 /* Initialize the structure fields to zero values. */
664 init_sal (struct symtab_and_line *sal)
675 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
677 struct partial_symtab *
678 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
680 struct partial_symtab *pst;
681 struct objfile *objfile;
682 struct minimal_symbol *msymbol;
684 /* If we know that this is not a text address, return failure. This is
685 necessary because we loop based on texthigh and textlow, which do
686 not include the data ranges. */
687 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
689 && (msymbol->type == mst_data
690 || msymbol->type == mst_bss
691 || msymbol->type == mst_abs
692 || msymbol->type == mst_file_data
693 || msymbol->type == mst_file_bss))
696 ALL_PSYMTABS (objfile, pst)
698 if (pc >= pst->textlow && pc < pst->texthigh)
700 struct partial_symtab *tpst;
702 /* An objfile that has its functions reordered might have
703 many partial symbol tables containing the PC, but
704 we want the partial symbol table that contains the
705 function containing the PC. */
706 if (!(objfile->flags & OBJF_REORDERED) &&
707 section == 0) /* can't validate section this way */
713 for (tpst = pst; tpst != NULL; tpst = tpst->next)
715 if (pc >= tpst->textlow && pc < tpst->texthigh)
717 struct partial_symbol *p;
719 p = find_pc_sect_psymbol (tpst, pc, section);
721 && SYMBOL_VALUE_ADDRESS (p)
722 == SYMBOL_VALUE_ADDRESS (msymbol))
732 /* Find which partial symtab contains PC. Return 0 if none.
733 Backward compatibility, no section */
735 struct partial_symtab *
736 find_pc_psymtab (CORE_ADDR pc)
738 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
741 /* Find which partial symbol within a psymtab matches PC and SECTION.
742 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
744 struct partial_symbol *
745 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
748 struct partial_symbol *best = NULL, *p, **pp;
752 psymtab = find_pc_sect_psymtab (pc, section);
756 /* Cope with programs that start at address 0 */
757 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
759 /* Search the global symbols as well as the static symbols, so that
760 find_pc_partial_function doesn't use a minimal symbol and thus
761 cache a bad endaddr. */
762 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
763 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
764 < psymtab->n_global_syms);
768 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
769 && SYMBOL_CLASS (p) == LOC_BLOCK
770 && pc >= SYMBOL_VALUE_ADDRESS (p)
771 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
772 || (psymtab->textlow == 0
773 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
775 if (section) /* match on a specific section */
777 fixup_psymbol_section (p, psymtab->objfile);
778 if (SYMBOL_BFD_SECTION (p) != section)
781 best_pc = SYMBOL_VALUE_ADDRESS (p);
786 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
787 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
788 < psymtab->n_static_syms);
792 if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
793 && SYMBOL_CLASS (p) == LOC_BLOCK
794 && pc >= SYMBOL_VALUE_ADDRESS (p)
795 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
796 || (psymtab->textlow == 0
797 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
799 if (section) /* match on a specific section */
801 fixup_psymbol_section (p, psymtab->objfile);
802 if (SYMBOL_BFD_SECTION (p) != section)
805 best_pc = SYMBOL_VALUE_ADDRESS (p);
813 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
814 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
816 struct partial_symbol *
817 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
819 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
822 /* Debug symbols usually don't have section information. We need to dig that
823 out of the minimal symbols and stash that in the debug symbol. */
826 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
828 struct minimal_symbol *msym;
829 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
833 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
834 ginfo->section = SYMBOL_SECTION (msym);
839 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
844 if (SYMBOL_BFD_SECTION (sym))
847 fixup_section (&sym->ginfo, objfile);
852 struct partial_symbol *
853 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
858 if (SYMBOL_BFD_SECTION (psym))
861 fixup_section (&psym->ginfo, objfile);
866 /* Find the definition for a specified symbol name NAME
867 in domain DOMAIN, visible from lexical block BLOCK.
868 Returns the struct symbol pointer, or zero if no symbol is found.
869 If SYMTAB is non-NULL, store the symbol table in which the
870 symbol was found there, or NULL if not found.
871 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
872 NAME is a field of the current implied argument `this'. If so set
873 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
874 BLOCK_FOUND is set to the block in which NAME is found (in the case of
875 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
877 /* This function has a bunch of loops in it and it would seem to be
878 attractive to put in some QUIT's (though I'm not really sure
879 whether it can run long enough to be really important). But there
880 are a few calls for which it would appear to be bad news to quit
881 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
882 that there is C++ code below which can error(), but that probably
883 doesn't affect these calls since they are looking for a known
884 variable and thus can probably assume it will never hit the C++
888 lookup_symbol (const char *name, const struct block *block,
889 const domain_enum domain, int *is_a_field_of_this,
890 struct symtab **symtab)
892 char *demangled_name = NULL;
893 const char *modified_name = NULL;
894 const char *mangled_name = NULL;
895 int needtofreename = 0;
896 struct symbol *returnval;
898 modified_name = name;
900 /* If we are using C++ language, demangle the name before doing a lookup, so
901 we can always binary search. */
902 if (current_language->la_language == language_cplus)
904 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
908 modified_name = demangled_name;
913 if (case_sensitivity == case_sensitive_off)
919 copy = (char *) alloca (len + 1);
920 for (i= 0; i < len; i++)
921 copy[i] = tolower (name[i]);
923 modified_name = copy;
926 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
927 domain, is_a_field_of_this, symtab);
929 xfree (demangled_name);
934 /* Behave like lookup_symbol_aux except that NAME is the natural name
935 of the symbol that we're looking for and, if LINKAGE_NAME is
936 non-NULL, ensure that the symbol's linkage name matches as
939 static struct symbol *
940 lookup_symbol_aux (const char *name, const char *linkage_name,
941 const struct block *block, const domain_enum domain,
942 int *is_a_field_of_this, struct symtab **symtab)
946 /* Make sure we do something sensible with is_a_field_of_this, since
947 the callers that set this parameter to some non-null value will
948 certainly use it later and expect it to be either 0 or 1.
949 If we don't set it, the contents of is_a_field_of_this are
951 if (is_a_field_of_this != NULL)
952 *is_a_field_of_this = 0;
954 /* Search specified block and its superiors. Don't search
955 STATIC_BLOCK or GLOBAL_BLOCK. */
957 sym = lookup_symbol_aux_local (name, linkage_name, block, domain,
962 /* If requested to do so by the caller and if appropriate for the
963 current language, check to see if NAME is a field of `this'. */
965 if (current_language->la_value_of_this != NULL
966 && is_a_field_of_this != NULL)
968 struct value *v = current_language->la_value_of_this (0);
970 if (v && check_field (v, name))
972 *is_a_field_of_this = 1;
979 /* Now do whatever is appropriate for the current language to look
980 up static and global variables. */
982 sym = current_language->la_lookup_symbol_nonlocal (name, linkage_name,
988 /* Now search all static file-level symbols. Not strictly correct,
989 but more useful than an error. Do the symtabs first, then check
990 the psymtabs. If a psymtab indicates the existence of the
991 desired name as a file-level static, then do psymtab-to-symtab
992 conversion on the fly and return the found symbol. */
994 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, linkage_name,
999 sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, linkage_name,
1009 /* Check to see if the symbol is defined in BLOCK or its superiors.
1010 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1012 static struct symbol *
1013 lookup_symbol_aux_local (const char *name, const char *linkage_name,
1014 const struct block *block,
1015 const domain_enum domain,
1016 struct symtab **symtab)
1019 const struct block *static_block = block_static_block (block);
1021 /* Check if either no block is specified or it's a global block. */
1023 if (static_block == NULL)
1026 while (block != static_block)
1028 sym = lookup_symbol_aux_block (name, linkage_name, block, domain,
1032 block = BLOCK_SUPERBLOCK (block);
1035 /* We've reached the static block without finding a result. */
1040 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1041 symbol, and set block_found appropriately. */
1044 lookup_symbol_aux_block (const char *name, const char *linkage_name,
1045 const struct block *block,
1046 const domain_enum domain,
1047 struct symtab **symtab)
1050 struct objfile *objfile = NULL;
1051 struct blockvector *bv;
1053 struct symtab *s = NULL;
1055 sym = lookup_block_symbol (block, name, linkage_name, domain);
1058 block_found = block;
1061 /* Search the list of symtabs for one which contains the
1062 address of the start of this block. */
1063 ALL_SYMTABS (objfile, s)
1065 bv = BLOCKVECTOR (s);
1066 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1067 if (BLOCK_START (b) <= BLOCK_START (block)
1068 && BLOCK_END (b) > BLOCK_START (block))
1075 return fixup_symbol_section (sym, objfile);
1081 /* Check to see if the symbol is defined in one of the symtabs.
1082 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1083 depending on whether or not we want to search global symbols or
1086 static struct symbol *
1087 lookup_symbol_aux_symtabs (int block_index,
1088 const char *name, const char *linkage_name,
1089 const domain_enum domain,
1090 struct symtab **symtab)
1093 struct objfile *objfile;
1094 struct blockvector *bv;
1095 const struct block *block;
1098 ALL_SYMTABS (objfile, s)
1100 bv = BLOCKVECTOR (s);
1101 block = BLOCKVECTOR_BLOCK (bv, block_index);
1102 sym = lookup_block_symbol (block, name, linkage_name, domain);
1105 block_found = block;
1108 return fixup_symbol_section (sym, objfile);
1115 /* Check to see if the symbol is defined in one of the partial
1116 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1117 STATIC_BLOCK, depending on whether or not we want to search global
1118 symbols or static symbols. */
1120 static struct symbol *
1121 lookup_symbol_aux_psymtabs (int block_index, const char *name,
1122 const char *linkage_name,
1123 const domain_enum domain,
1124 struct symtab **symtab)
1127 struct objfile *objfile;
1128 struct blockvector *bv;
1129 const struct block *block;
1130 struct partial_symtab *ps;
1132 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
1134 ALL_PSYMTABS (objfile, ps)
1137 && lookup_partial_symbol (ps, name, linkage_name,
1138 psymtab_index, domain))
1140 s = PSYMTAB_TO_SYMTAB (ps);
1141 bv = BLOCKVECTOR (s);
1142 block = BLOCKVECTOR_BLOCK (bv, block_index);
1143 sym = lookup_block_symbol (block, name, linkage_name, domain);
1146 /* This shouldn't be necessary, but as a last resort try
1147 looking in the statics even though the psymtab claimed
1148 the symbol was global, or vice-versa. It's possible
1149 that the psymtab gets it wrong in some cases. */
1151 /* FIXME: carlton/2002-09-30: Should we really do that?
1152 If that happens, isn't it likely to be a GDB error, in
1153 which case we should fix the GDB error rather than
1154 silently dealing with it here? So I'd vote for
1155 removing the check for the symbol in the other
1157 block = BLOCKVECTOR_BLOCK (bv,
1158 block_index == GLOBAL_BLOCK ?
1159 STATIC_BLOCK : GLOBAL_BLOCK);
1160 sym = lookup_block_symbol (block, name, linkage_name, domain);
1162 error ("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>).",
1163 block_index == GLOBAL_BLOCK ? "global" : "static",
1164 name, ps->filename, name, name);
1168 return fixup_symbol_section (sym, objfile);
1176 /* Check for the possibility of the symbol being a function or a
1177 mangled variable that is stored in one of the minimal symbol
1178 tables. Eventually, all global symbols might be resolved in this
1181 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1182 lookup_symbol_aux, and what are now 'return' statements within
1183 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1184 sym was NULL. As far as I can tell, this was basically accidental;
1185 it didn't happen every time that msymbol was non-NULL, but only if
1186 some additional conditions held as well, and it caused problems
1187 with HP-generated symbol tables. */
1189 /* NOTE: carlton/2003-05-14: This function was once used as part of
1190 lookup_symbol. It is currently unnecessary for correctness
1191 reasons, however, and using it doesn't seem to be any faster than
1192 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1194 static struct symbol *
1195 lookup_symbol_aux_minsyms (const char *name,
1196 const char *linkage_name,
1197 const domain_enum domain,
1198 int *is_a_field_of_this,
1199 struct symtab **symtab)
1202 struct blockvector *bv;
1203 const struct block *block;
1204 struct minimal_symbol *msymbol;
1207 if (domain == VAR_DOMAIN)
1209 msymbol = lookup_minimal_symbol (name, NULL, NULL);
1211 if (msymbol != NULL)
1213 /* OK, we found a minimal symbol in spite of not finding any
1214 symbol. There are various possible explanations for
1215 this. One possibility is the symbol exists in code not
1216 compiled -g. Another possibility is that the 'psymtab'
1217 isn't doing its job. A third possibility, related to #2,
1218 is that we were confused by name-mangling. For instance,
1219 maybe the psymtab isn't doing its job because it only
1220 know about demangled names, but we were given a mangled
1223 /* We first use the address in the msymbol to try to locate
1224 the appropriate symtab. Note that find_pc_sect_symtab()
1225 has a side-effect of doing psymtab-to-symtab expansion,
1226 for the found symtab. */
1227 s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
1228 SYMBOL_BFD_SECTION (msymbol));
1231 /* This is a function which has a symtab for its address. */
1232 bv = BLOCKVECTOR (s);
1233 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1235 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1236 `name' argument to lookup_block_symbol. But the name
1237 of a minimal symbol is always mangled, so that seems
1238 to be clearly the wrong thing to pass as the
1241 lookup_block_symbol (block, name, linkage_name, domain);
1242 /* We kept static functions in minimal symbol table as well as
1243 in static scope. We want to find them in the symbol table. */
1246 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1247 sym = lookup_block_symbol (block, name,
1248 linkage_name, domain);
1251 /* NOTE: carlton/2002-12-04: The following comment was
1252 taken from a time when two versions of this function
1253 were part of the body of lookup_symbol_aux: this
1254 comment was taken from the version of the function
1255 that was #ifdef HPUXHPPA, and the comment was right
1256 before the 'return NULL' part of lookup_symbol_aux.
1257 (Hence the "Fall through and return 0" comment.)
1258 Elena did some digging into the situation for
1259 Fortran, and she reports:
1261 "I asked around (thanks to Jeff Knaggs), and I think
1262 the story for Fortran goes like this:
1264 "Apparently, in older Fortrans, '_' was not part of
1265 the user namespace. g77 attached a final '_' to
1266 procedure names as the exported symbols for linkage
1267 (foo_) , but the symbols went in the debug info just
1268 like 'foo'. The rationale behind this is not
1269 completely clear, and maybe it was done to other
1270 symbols as well, not just procedures." */
1272 /* If we get here with sym == 0, the symbol was
1273 found in the minimal symbol table
1274 but not in the symtab.
1275 Fall through and return 0 to use the msymbol
1276 definition of "foo_".
1277 (Note that outer code generally follows up a call
1278 to this routine with a call to lookup_minimal_symbol(),
1279 so a 0 return means we'll just flow into that other routine).
1281 This happens for Fortran "foo_" symbols,
1282 which are "foo" in the symtab.
1284 This can also happen if "asm" is used to make a
1285 regular symbol but not a debugging symbol, e.g.
1286 asm(".globl _main");
1290 if (symtab != NULL && sym != NULL)
1292 return fixup_symbol_section (sym, s->objfile);
1301 /* A default version of lookup_symbol_nonlocal for use by languages
1302 that can't think of anything better to do. This implements the C
1306 basic_lookup_symbol_nonlocal (const char *name,
1307 const char *linkage_name,
1308 const struct block *block,
1309 const domain_enum domain,
1310 struct symtab **symtab)
1314 /* NOTE: carlton/2003-05-19: The comments below were written when
1315 this (or what turned into this) was part of lookup_symbol_aux;
1316 I'm much less worried about these questions now, since these
1317 decisions have turned out well, but I leave these comments here
1320 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1321 not it would be appropriate to search the current global block
1322 here as well. (That's what this code used to do before the
1323 is_a_field_of_this check was moved up.) On the one hand, it's
1324 redundant with the lookup_symbol_aux_symtabs search that happens
1325 next. On the other hand, if decode_line_1 is passed an argument
1326 like filename:var, then the user presumably wants 'var' to be
1327 searched for in filename. On the third hand, there shouldn't be
1328 multiple global variables all of which are named 'var', and it's
1329 not like decode_line_1 has ever restricted its search to only
1330 global variables in a single filename. All in all, only
1331 searching the static block here seems best: it's correct and it's
1334 /* NOTE: carlton/2002-12-05: There's also a possible performance
1335 issue here: if you usually search for global symbols in the
1336 current file, then it would be slightly better to search the
1337 current global block before searching all the symtabs. But there
1338 are other factors that have a much greater effect on performance
1339 than that one, so I don't think we should worry about that for
1342 sym = lookup_symbol_static (name, linkage_name, block, domain, symtab);
1346 return lookup_symbol_global (name, linkage_name, domain, symtab);
1349 /* Lookup a symbol in the static block associated to BLOCK, if there
1350 is one; do nothing if BLOCK is NULL or a global block. */
1353 lookup_symbol_static (const char *name,
1354 const char *linkage_name,
1355 const struct block *block,
1356 const domain_enum domain,
1357 struct symtab **symtab)
1359 const struct block *static_block = block_static_block (block);
1361 if (static_block != NULL)
1362 return lookup_symbol_aux_block (name, linkage_name, static_block,
1368 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1372 lookup_symbol_global (const char *name,
1373 const char *linkage_name,
1374 const domain_enum domain,
1375 struct symtab **symtab)
1379 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name,
1384 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name,
1388 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1389 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1390 linkage name matches it. Check the global symbols if GLOBAL, the
1391 static symbols if not */
1393 struct partial_symbol *
1394 lookup_partial_symbol (struct partial_symtab *pst, const char *name,
1395 const char *linkage_name, int global,
1398 struct partial_symbol *temp;
1399 struct partial_symbol **start, **psym;
1400 struct partial_symbol **top, **real_top, **bottom, **center;
1401 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1402 int do_linear_search = 1;
1409 pst->objfile->global_psymbols.list + pst->globals_offset :
1410 pst->objfile->static_psymbols.list + pst->statics_offset);
1412 if (global) /* This means we can use a binary search. */
1414 do_linear_search = 0;
1416 /* Binary search. This search is guaranteed to end with center
1417 pointing at the earliest partial symbol whose name might be
1418 correct. At that point *all* partial symbols with an
1419 appropriate name will be checked against the correct
1423 top = start + length - 1;
1425 while (top > bottom)
1427 center = bottom + (top - bottom) / 2;
1428 if (!(center < top))
1429 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1430 if (!do_linear_search
1431 && (SYMBOL_LANGUAGE (*center) == language_java))
1433 do_linear_search = 1;
1435 if (strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*center), name) >= 0)
1441 bottom = center + 1;
1444 if (!(top == bottom))
1445 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1447 while (top <= real_top
1448 && (linkage_name != NULL
1449 ? strcmp (SYMBOL_LINKAGE_NAME (*top), linkage_name) == 0
1450 : SYMBOL_MATCHES_NATURAL_NAME (*top,name)))
1452 if (SYMBOL_DOMAIN (*top) == domain)
1460 /* Can't use a binary search or else we found during the binary search that
1461 we should also do a linear search. */
1463 if (do_linear_search)
1465 for (psym = start; psym < start + length; psym++)
1467 if (domain == SYMBOL_DOMAIN (*psym))
1469 if (linkage_name != NULL
1470 ? strcmp (SYMBOL_LINKAGE_NAME (*psym), linkage_name) == 0
1471 : SYMBOL_MATCHES_NATURAL_NAME (*psym, name))
1482 /* Look up a type named NAME in the struct_domain. The type returned
1483 must not be opaque -- i.e., must have at least one field
1487 lookup_transparent_type (const char *name)
1489 return current_language->la_lookup_transparent_type (name);
1492 /* The standard implementation of lookup_transparent_type. This code
1493 was modeled on lookup_symbol -- the parts not relevant to looking
1494 up types were just left out. In particular it's assumed here that
1495 types are available in struct_domain and only at file-static or
1499 basic_lookup_transparent_type (const char *name)
1502 struct symtab *s = NULL;
1503 struct partial_symtab *ps;
1504 struct blockvector *bv;
1505 struct objfile *objfile;
1506 struct block *block;
1508 /* Now search all the global symbols. Do the symtab's first, then
1509 check the psymtab's. If a psymtab indicates the existence
1510 of the desired name as a global, then do psymtab-to-symtab
1511 conversion on the fly and return the found symbol. */
1513 ALL_SYMTABS (objfile, s)
1515 bv = BLOCKVECTOR (s);
1516 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1517 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1518 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1520 return SYMBOL_TYPE (sym);
1524 ALL_PSYMTABS (objfile, ps)
1526 if (!ps->readin && lookup_partial_symbol (ps, name, NULL,
1529 s = PSYMTAB_TO_SYMTAB (ps);
1530 bv = BLOCKVECTOR (s);
1531 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1532 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1535 /* This shouldn't be necessary, but as a last resort
1536 * try looking in the statics even though the psymtab
1537 * claimed the symbol was global. It's possible that
1538 * the psymtab gets it wrong in some cases.
1540 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1541 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1543 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1544 %s may be an inlined function, or may be a template function\n\
1545 (if a template, try specifying an instantiation: %s<type>).",
1546 name, ps->filename, name, name);
1548 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1549 return SYMBOL_TYPE (sym);
1553 /* Now search the static file-level symbols.
1554 Not strictly correct, but more useful than an error.
1555 Do the symtab's first, then
1556 check the psymtab's. If a psymtab indicates the existence
1557 of the desired name as a file-level static, then do psymtab-to-symtab
1558 conversion on the fly and return the found symbol.
1561 ALL_SYMTABS (objfile, s)
1563 bv = BLOCKVECTOR (s);
1564 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1565 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1566 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1568 return SYMBOL_TYPE (sym);
1572 ALL_PSYMTABS (objfile, ps)
1574 if (!ps->readin && lookup_partial_symbol (ps, name, NULL, 0, STRUCT_DOMAIN))
1576 s = PSYMTAB_TO_SYMTAB (ps);
1577 bv = BLOCKVECTOR (s);
1578 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1579 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1582 /* This shouldn't be necessary, but as a last resort
1583 * try looking in the globals even though the psymtab
1584 * claimed the symbol was static. It's possible that
1585 * the psymtab gets it wrong in some cases.
1587 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1588 sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN);
1590 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1591 %s may be an inlined function, or may be a template function\n\
1592 (if a template, try specifying an instantiation: %s<type>).",
1593 name, ps->filename, name, name);
1595 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1596 return SYMBOL_TYPE (sym);
1599 return (struct type *) 0;
1603 /* Find the psymtab containing main(). */
1604 /* FIXME: What about languages without main() or specially linked
1605 executables that have no main() ? */
1607 struct partial_symtab *
1608 find_main_psymtab (void)
1610 struct partial_symtab *pst;
1611 struct objfile *objfile;
1613 ALL_PSYMTABS (objfile, pst)
1615 if (lookup_partial_symbol (pst, main_name (), NULL, 1, VAR_DOMAIN))
1623 /* Search BLOCK for symbol NAME in DOMAIN.
1625 Note that if NAME is the demangled form of a C++ symbol, we will fail
1626 to find a match during the binary search of the non-encoded names, but
1627 for now we don't worry about the slight inefficiency of looking for
1628 a match we'll never find, since it will go pretty quick. Once the
1629 binary search terminates, we drop through and do a straight linear
1630 search on the symbols. Each symbol which is marked as being a ObjC/C++
1631 symbol (language_cplus or language_objc set) has both the encoded and
1632 non-encoded names tested for a match.
1634 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1635 particular mangled name.
1639 lookup_block_symbol (const struct block *block, const char *name,
1640 const char *linkage_name,
1641 const domain_enum domain)
1643 struct dict_iterator iter;
1646 if (!BLOCK_FUNCTION (block))
1648 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1650 sym = dict_iter_name_next (name, &iter))
1652 if (SYMBOL_DOMAIN (sym) == domain
1653 && (linkage_name != NULL
1654 ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
1661 /* Note that parameter symbols do not always show up last in the
1662 list; this loop makes sure to take anything else other than
1663 parameter symbols first; it only uses parameter symbols as a
1664 last resort. Note that this only takes up extra computation
1667 struct symbol *sym_found = NULL;
1669 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1671 sym = dict_iter_name_next (name, &iter))
1673 if (SYMBOL_DOMAIN (sym) == domain
1674 && (linkage_name != NULL
1675 ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
1678 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1679 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1680 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1681 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1682 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1683 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG &&
1684 SYMBOL_CLASS (sym) != LOC_COMPUTED_ARG)
1690 return (sym_found); /* Will be NULL if not found. */
1694 /* Find the symtab associated with PC and SECTION. Look through the
1695 psymtabs and read in another symtab if necessary. */
1698 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1701 struct blockvector *bv;
1702 struct symtab *s = NULL;
1703 struct symtab *best_s = NULL;
1704 struct partial_symtab *ps;
1705 struct objfile *objfile;
1706 CORE_ADDR distance = 0;
1707 struct minimal_symbol *msymbol;
1709 /* If we know that this is not a text address, return failure. This is
1710 necessary because we loop based on the block's high and low code
1711 addresses, which do not include the data ranges, and because
1712 we call find_pc_sect_psymtab which has a similar restriction based
1713 on the partial_symtab's texthigh and textlow. */
1714 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1716 && (msymbol->type == mst_data
1717 || msymbol->type == mst_bss
1718 || msymbol->type == mst_abs
1719 || msymbol->type == mst_file_data
1720 || msymbol->type == mst_file_bss))
1723 /* Search all symtabs for the one whose file contains our address, and which
1724 is the smallest of all the ones containing the address. This is designed
1725 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1726 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1727 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1729 This happens for native ecoff format, where code from included files
1730 gets its own symtab. The symtab for the included file should have
1731 been read in already via the dependency mechanism.
1732 It might be swifter to create several symtabs with the same name
1733 like xcoff does (I'm not sure).
1735 It also happens for objfiles that have their functions reordered.
1736 For these, the symtab we are looking for is not necessarily read in. */
1738 ALL_SYMTABS (objfile, s)
1740 bv = BLOCKVECTOR (s);
1741 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1743 if (BLOCK_START (b) <= pc
1744 && BLOCK_END (b) > pc
1746 || BLOCK_END (b) - BLOCK_START (b) < distance))
1748 /* For an objfile that has its functions reordered,
1749 find_pc_psymtab will find the proper partial symbol table
1750 and we simply return its corresponding symtab. */
1751 /* In order to better support objfiles that contain both
1752 stabs and coff debugging info, we continue on if a psymtab
1754 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1756 ps = find_pc_sect_psymtab (pc, section);
1758 return PSYMTAB_TO_SYMTAB (ps);
1762 struct dict_iterator iter;
1763 struct symbol *sym = NULL;
1765 ALL_BLOCK_SYMBOLS (b, iter, sym)
1767 fixup_symbol_section (sym, objfile);
1768 if (section == SYMBOL_BFD_SECTION (sym))
1772 continue; /* no symbol in this symtab matches section */
1774 distance = BLOCK_END (b) - BLOCK_START (b);
1783 ps = find_pc_sect_psymtab (pc, section);
1787 /* Might want to error() here (in case symtab is corrupt and
1788 will cause a core dump), but maybe we can successfully
1789 continue, so let's not. */
1791 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1793 s = PSYMTAB_TO_SYMTAB (ps);
1798 /* Find the symtab associated with PC. Look through the psymtabs and
1799 read in another symtab if necessary. Backward compatibility, no section */
1802 find_pc_symtab (CORE_ADDR pc)
1804 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1808 /* Find the source file and line number for a given PC value and SECTION.
1809 Return a structure containing a symtab pointer, a line number,
1810 and a pc range for the entire source line.
1811 The value's .pc field is NOT the specified pc.
1812 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1813 use the line that ends there. Otherwise, in that case, the line
1814 that begins there is used. */
1816 /* The big complication here is that a line may start in one file, and end just
1817 before the start of another file. This usually occurs when you #include
1818 code in the middle of a subroutine. To properly find the end of a line's PC
1819 range, we must search all symtabs associated with this compilation unit, and
1820 find the one whose first PC is closer than that of the next line in this
1823 /* If it's worth the effort, we could be using a binary search. */
1825 struct symtab_and_line
1826 find_pc_sect_line (CORE_ADDR pc, struct bfd_section *section, int notcurrent)
1829 struct linetable *l;
1832 struct linetable_entry *item;
1833 struct symtab_and_line val;
1834 struct blockvector *bv;
1835 struct minimal_symbol *msymbol;
1836 struct minimal_symbol *mfunsym;
1838 /* Info on best line seen so far, and where it starts, and its file. */
1840 struct linetable_entry *best = NULL;
1841 CORE_ADDR best_end = 0;
1842 struct symtab *best_symtab = 0;
1844 /* Store here the first line number
1845 of a file which contains the line at the smallest pc after PC.
1846 If we don't find a line whose range contains PC,
1847 we will use a line one less than this,
1848 with a range from the start of that file to the first line's pc. */
1849 struct linetable_entry *alt = NULL;
1850 struct symtab *alt_symtab = 0;
1852 /* Info on best line seen in this file. */
1854 struct linetable_entry *prev;
1856 /* If this pc is not from the current frame,
1857 it is the address of the end of a call instruction.
1858 Quite likely that is the start of the following statement.
1859 But what we want is the statement containing the instruction.
1860 Fudge the pc to make sure we get that. */
1862 init_sal (&val); /* initialize to zeroes */
1864 /* It's tempting to assume that, if we can't find debugging info for
1865 any function enclosing PC, that we shouldn't search for line
1866 number info, either. However, GAS can emit line number info for
1867 assembly files --- very helpful when debugging hand-written
1868 assembly code. In such a case, we'd have no debug info for the
1869 function, but we would have line info. */
1874 /* elz: added this because this function returned the wrong
1875 information if the pc belongs to a stub (import/export)
1876 to call a shlib function. This stub would be anywhere between
1877 two functions in the target, and the line info was erroneously
1878 taken to be the one of the line before the pc.
1880 /* RT: Further explanation:
1882 * We have stubs (trampolines) inserted between procedures.
1884 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1885 * exists in the main image.
1887 * In the minimal symbol table, we have a bunch of symbols
1888 * sorted by start address. The stubs are marked as "trampoline",
1889 * the others appear as text. E.g.:
1891 * Minimal symbol table for main image
1892 * main: code for main (text symbol)
1893 * shr1: stub (trampoline symbol)
1894 * foo: code for foo (text symbol)
1896 * Minimal symbol table for "shr1" image:
1898 * shr1: code for shr1 (text symbol)
1901 * So the code below is trying to detect if we are in the stub
1902 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1903 * and if found, do the symbolization from the real-code address
1904 * rather than the stub address.
1906 * Assumptions being made about the minimal symbol table:
1907 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1908 * if we're really in the trampoline. If we're beyond it (say
1909 * we're in "foo" in the above example), it'll have a closer
1910 * symbol (the "foo" text symbol for example) and will not
1911 * return the trampoline.
1912 * 2. lookup_minimal_symbol_text() will find a real text symbol
1913 * corresponding to the trampoline, and whose address will
1914 * be different than the trampoline address. I put in a sanity
1915 * check for the address being the same, to avoid an
1916 * infinite recursion.
1918 msymbol = lookup_minimal_symbol_by_pc (pc);
1919 if (msymbol != NULL)
1920 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
1922 mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol),
1924 if (mfunsym == NULL)
1925 /* I eliminated this warning since it is coming out
1926 * in the following situation:
1927 * gdb shmain // test program with shared libraries
1928 * (gdb) break shr1 // function in shared lib
1929 * Warning: In stub for ...
1930 * In the above situation, the shared lib is not loaded yet,
1931 * so of course we can't find the real func/line info,
1932 * but the "break" still works, and the warning is annoying.
1933 * So I commented out the warning. RT */
1934 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1936 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
1937 /* Avoid infinite recursion */
1938 /* See above comment about why warning is commented out */
1939 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1942 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
1946 s = find_pc_sect_symtab (pc, section);
1949 /* if no symbol information, return previous pc */
1956 bv = BLOCKVECTOR (s);
1958 /* Look at all the symtabs that share this blockvector.
1959 They all have the same apriori range, that we found was right;
1960 but they have different line tables. */
1962 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
1964 /* Find the best line in this symtab. */
1971 /* I think len can be zero if the symtab lacks line numbers
1972 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1973 I'm not sure which, and maybe it depends on the symbol
1979 item = l->item; /* Get first line info */
1981 /* Is this file's first line closer than the first lines of other files?
1982 If so, record this file, and its first line, as best alternate. */
1983 if (item->pc > pc && (!alt || item->pc < alt->pc))
1989 for (i = 0; i < len; i++, item++)
1991 /* Leave prev pointing to the linetable entry for the last line
1992 that started at or before PC. */
1999 /* At this point, prev points at the line whose start addr is <= pc, and
2000 item points at the next line. If we ran off the end of the linetable
2001 (pc >= start of the last line), then prev == item. If pc < start of
2002 the first line, prev will not be set. */
2004 /* Is this file's best line closer than the best in the other files?
2005 If so, record this file, and its best line, as best so far. Don't
2006 save prev if it represents the end of a function (i.e. line number
2007 0) instead of a real line. */
2009 if (prev && prev->line && (!best || prev->pc > best->pc))
2014 /* Discard BEST_END if it's before the PC of the current BEST. */
2015 if (best_end <= best->pc)
2019 /* If another line (denoted by ITEM) is in the linetable and its
2020 PC is after BEST's PC, but before the current BEST_END, then
2021 use ITEM's PC as the new best_end. */
2022 if (best && i < len && item->pc > best->pc
2023 && (best_end == 0 || best_end > item->pc))
2024 best_end = item->pc;
2030 { /* If we didn't find any line # info, just
2036 val.symtab = alt_symtab;
2037 val.line = alt->line - 1;
2039 /* Don't return line 0, that means that we didn't find the line. */
2043 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2047 else if (best->line == 0)
2049 /* If our best fit is in a range of PC's for which no line
2050 number info is available (line number is zero) then we didn't
2051 find any valid line information. */
2056 val.symtab = best_symtab;
2057 val.line = best->line;
2059 if (best_end && (!alt || best_end < alt->pc))
2064 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2066 val.section = section;
2070 /* Backward compatibility (no section) */
2072 struct symtab_and_line
2073 find_pc_line (CORE_ADDR pc, int notcurrent)
2077 section = find_pc_overlay (pc);
2078 if (pc_in_unmapped_range (pc, section))
2079 pc = overlay_mapped_address (pc, section);
2080 return find_pc_sect_line (pc, section, notcurrent);
2083 /* Find line number LINE in any symtab whose name is the same as
2086 If found, return the symtab that contains the linetable in which it was
2087 found, set *INDEX to the index in the linetable of the best entry
2088 found, and set *EXACT_MATCH nonzero if the value returned is an
2091 If not found, return NULL. */
2094 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2098 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2102 struct linetable *best_linetable;
2103 struct symtab *best_symtab;
2105 /* First try looking it up in the given symtab. */
2106 best_linetable = LINETABLE (symtab);
2107 best_symtab = symtab;
2108 best_index = find_line_common (best_linetable, line, &exact);
2109 if (best_index < 0 || !exact)
2111 /* Didn't find an exact match. So we better keep looking for
2112 another symtab with the same name. In the case of xcoff,
2113 multiple csects for one source file (produced by IBM's FORTRAN
2114 compiler) produce multiple symtabs (this is unavoidable
2115 assuming csects can be at arbitrary places in memory and that
2116 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2118 /* BEST is the smallest linenumber > LINE so far seen,
2119 or 0 if none has been seen so far.
2120 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2123 struct objfile *objfile;
2126 if (best_index >= 0)
2127 best = best_linetable->item[best_index].line;
2131 ALL_SYMTABS (objfile, s)
2133 struct linetable *l;
2136 if (strcmp (symtab->filename, s->filename) != 0)
2139 ind = find_line_common (l, line, &exact);
2149 if (best == 0 || l->item[ind].line < best)
2151 best = l->item[ind].line;
2164 *index = best_index;
2166 *exact_match = exact;
2171 /* Set the PC value for a given source file and line number and return true.
2172 Returns zero for invalid line number (and sets the PC to 0).
2173 The source file is specified with a struct symtab. */
2176 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2178 struct linetable *l;
2185 symtab = find_line_symtab (symtab, line, &ind, NULL);
2188 l = LINETABLE (symtab);
2189 *pc = l->item[ind].pc;
2196 /* Find the range of pc values in a line.
2197 Store the starting pc of the line into *STARTPTR
2198 and the ending pc (start of next line) into *ENDPTR.
2199 Returns 1 to indicate success.
2200 Returns 0 if could not find the specified line. */
2203 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2206 CORE_ADDR startaddr;
2207 struct symtab_and_line found_sal;
2210 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2213 /* This whole function is based on address. For example, if line 10 has
2214 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2215 "info line *0x123" should say the line goes from 0x100 to 0x200
2216 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2217 This also insures that we never give a range like "starts at 0x134
2218 and ends at 0x12c". */
2220 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2221 if (found_sal.line != sal.line)
2223 /* The specified line (sal) has zero bytes. */
2224 *startptr = found_sal.pc;
2225 *endptr = found_sal.pc;
2229 *startptr = found_sal.pc;
2230 *endptr = found_sal.end;
2235 /* Given a line table and a line number, return the index into the line
2236 table for the pc of the nearest line whose number is >= the specified one.
2237 Return -1 if none is found. The value is >= 0 if it is an index.
2239 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2242 find_line_common (struct linetable *l, int lineno,
2248 /* BEST is the smallest linenumber > LINENO so far seen,
2249 or 0 if none has been seen so far.
2250 BEST_INDEX identifies the item for it. */
2252 int best_index = -1;
2261 for (i = 0; i < len; i++)
2263 struct linetable_entry *item = &(l->item[i]);
2265 if (item->line == lineno)
2267 /* Return the first (lowest address) entry which matches. */
2272 if (item->line > lineno && (best == 0 || item->line < best))
2279 /* If we got here, we didn't get an exact match. */
2286 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2288 struct symtab_and_line sal;
2289 sal = find_pc_line (pc, 0);
2292 return sal.symtab != 0;
2295 /* Given a function symbol SYM, find the symtab and line for the start
2297 If the argument FUNFIRSTLINE is nonzero, we want the first line
2298 of real code inside the function. */
2300 struct symtab_and_line
2301 find_function_start_sal (struct symbol *sym, int funfirstline)
2304 struct symtab_and_line sal;
2306 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2307 fixup_symbol_section (sym, NULL);
2309 { /* skip "first line" of function (which is actually its prologue) */
2310 asection *section = SYMBOL_BFD_SECTION (sym);
2311 /* If function is in an unmapped overlay, use its unmapped LMA
2312 address, so that SKIP_PROLOGUE has something unique to work on */
2313 if (section_is_overlay (section) &&
2314 !section_is_mapped (section))
2315 pc = overlay_unmapped_address (pc, section);
2317 pc += FUNCTION_START_OFFSET;
2318 pc = SKIP_PROLOGUE (pc);
2320 /* For overlays, map pc back into its mapped VMA range */
2321 pc = overlay_mapped_address (pc, section);
2323 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2325 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2326 line is still part of the same function. */
2328 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2329 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2331 /* First pc of next line */
2333 /* Recalculate the line number (might not be N+1). */
2334 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2341 /* If P is of the form "operator[ \t]+..." where `...' is
2342 some legitimate operator text, return a pointer to the
2343 beginning of the substring of the operator text.
2344 Otherwise, return "". */
2346 operator_chars (char *p, char **end)
2349 if (strncmp (p, "operator", 8))
2353 /* Don't get faked out by `operator' being part of a longer
2355 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2358 /* Allow some whitespace between `operator' and the operator symbol. */
2359 while (*p == ' ' || *p == '\t')
2362 /* Recognize 'operator TYPENAME'. */
2364 if (isalpha (*p) || *p == '_' || *p == '$')
2367 while (isalnum (*q) || *q == '_' || *q == '$')
2376 case '\\': /* regexp quoting */
2379 if (p[2] == '=') /* 'operator\*=' */
2381 else /* 'operator\*' */
2385 else if (p[1] == '[')
2388 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2389 else if (p[2] == '\\' && p[3] == ']')
2391 *end = p + 4; /* 'operator\[\]' */
2395 error ("nothing is allowed between '[' and ']'");
2399 /* Gratuitous qoute: skip it and move on. */
2421 if (p[0] == '-' && p[1] == '>')
2423 /* Struct pointer member operator 'operator->'. */
2426 *end = p + 3; /* 'operator->*' */
2429 else if (p[2] == '\\')
2431 *end = p + 4; /* Hopefully 'operator->\*' */
2436 *end = p + 2; /* 'operator->' */
2440 if (p[1] == '=' || p[1] == p[0])
2451 error ("`operator ()' must be specified without whitespace in `()'");
2456 error ("`operator ?:' must be specified without whitespace in `?:'");
2461 error ("`operator []' must be specified without whitespace in `[]'");
2465 error ("`operator %s' not supported", p);
2474 /* If FILE is not already in the table of files, return zero;
2475 otherwise return non-zero. Optionally add FILE to the table if ADD
2476 is non-zero. If *FIRST is non-zero, forget the old table
2479 filename_seen (const char *file, int add, int *first)
2481 /* Table of files seen so far. */
2482 static const char **tab = NULL;
2483 /* Allocated size of tab in elements.
2484 Start with one 256-byte block (when using GNU malloc.c).
2485 24 is the malloc overhead when range checking is in effect. */
2486 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2487 /* Current size of tab in elements. */
2488 static int tab_cur_size;
2494 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2498 /* Is FILE in tab? */
2499 for (p = tab; p < tab + tab_cur_size; p++)
2500 if (strcmp (*p, file) == 0)
2503 /* No; maybe add it to tab. */
2506 if (tab_cur_size == tab_alloc_size)
2508 tab_alloc_size *= 2;
2509 tab = (const char **) xrealloc ((char *) tab,
2510 tab_alloc_size * sizeof (*tab));
2512 tab[tab_cur_size++] = file;
2518 /* Slave routine for sources_info. Force line breaks at ,'s.
2519 NAME is the name to print and *FIRST is nonzero if this is the first
2520 name printed. Set *FIRST to zero. */
2522 output_source_filename (char *name, int *first)
2524 /* Since a single source file can result in several partial symbol
2525 tables, we need to avoid printing it more than once. Note: if
2526 some of the psymtabs are read in and some are not, it gets
2527 printed both under "Source files for which symbols have been
2528 read" and "Source files for which symbols will be read in on
2529 demand". I consider this a reasonable way to deal with the
2530 situation. I'm not sure whether this can also happen for
2531 symtabs; it doesn't hurt to check. */
2533 /* Was NAME already seen? */
2534 if (filename_seen (name, 1, first))
2536 /* Yes; don't print it again. */
2539 /* No; print it and reset *FIRST. */
2546 printf_filtered (", ");
2550 fputs_filtered (name, gdb_stdout);
2554 sources_info (char *ignore, int from_tty)
2557 struct partial_symtab *ps;
2558 struct objfile *objfile;
2561 if (!have_full_symbols () && !have_partial_symbols ())
2563 error ("No symbol table is loaded. Use the \"file\" command.");
2566 printf_filtered ("Source files for which symbols have been read in:\n\n");
2569 ALL_SYMTABS (objfile, s)
2571 output_source_filename (s->filename, &first);
2573 printf_filtered ("\n\n");
2575 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2578 ALL_PSYMTABS (objfile, ps)
2582 output_source_filename (ps->filename, &first);
2585 printf_filtered ("\n");
2589 file_matches (char *file, char *files[], int nfiles)
2593 if (file != NULL && nfiles != 0)
2595 for (i = 0; i < nfiles; i++)
2597 if (strcmp (files[i], lbasename (file)) == 0)
2601 else if (nfiles == 0)
2606 /* Free any memory associated with a search. */
2608 free_search_symbols (struct symbol_search *symbols)
2610 struct symbol_search *p;
2611 struct symbol_search *next;
2613 for (p = symbols; p != NULL; p = next)
2621 do_free_search_symbols_cleanup (void *symbols)
2623 free_search_symbols (symbols);
2627 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2629 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2632 /* Helper function for sort_search_symbols and qsort. Can only
2633 sort symbols, not minimal symbols. */
2635 compare_search_syms (const void *sa, const void *sb)
2637 struct symbol_search **sym_a = (struct symbol_search **) sa;
2638 struct symbol_search **sym_b = (struct symbol_search **) sb;
2640 return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol),
2641 SYMBOL_PRINT_NAME ((*sym_b)->symbol));
2644 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2645 prevtail where it is, but update its next pointer to point to
2646 the first of the sorted symbols. */
2647 static struct symbol_search *
2648 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2650 struct symbol_search **symbols, *symp, *old_next;
2653 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2655 symp = prevtail->next;
2656 for (i = 0; i < nfound; i++)
2661 /* Generally NULL. */
2664 qsort (symbols, nfound, sizeof (struct symbol_search *),
2665 compare_search_syms);
2668 for (i = 0; i < nfound; i++)
2670 symp->next = symbols[i];
2673 symp->next = old_next;
2679 /* Search the symbol table for matches to the regular expression REGEXP,
2680 returning the results in *MATCHES.
2682 Only symbols of KIND are searched:
2683 FUNCTIONS_DOMAIN - search all functions
2684 TYPES_DOMAIN - search all type names
2685 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2686 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2687 and constants (enums)
2689 free_search_symbols should be called when *MATCHES is no longer needed.
2691 The results are sorted locally; each symtab's global and static blocks are
2692 separately alphabetized.
2695 search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[],
2696 struct symbol_search **matches)
2699 struct partial_symtab *ps;
2700 struct blockvector *bv;
2701 struct blockvector *prev_bv = 0;
2704 struct dict_iterator iter;
2706 struct partial_symbol **psym;
2707 struct objfile *objfile;
2708 struct minimal_symbol *msymbol;
2711 static enum minimal_symbol_type types[]
2713 {mst_data, mst_text, mst_abs, mst_unknown};
2714 static enum minimal_symbol_type types2[]
2716 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2717 static enum minimal_symbol_type types3[]
2719 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2720 static enum minimal_symbol_type types4[]
2722 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2723 enum minimal_symbol_type ourtype;
2724 enum minimal_symbol_type ourtype2;
2725 enum minimal_symbol_type ourtype3;
2726 enum minimal_symbol_type ourtype4;
2727 struct symbol_search *sr;
2728 struct symbol_search *psr;
2729 struct symbol_search *tail;
2730 struct cleanup *old_chain = NULL;
2732 if (kind < VARIABLES_DOMAIN)
2733 error ("must search on specific domain");
2735 ourtype = types[(int) (kind - VARIABLES_DOMAIN)];
2736 ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)];
2737 ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)];
2738 ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)];
2740 sr = *matches = NULL;
2745 /* Make sure spacing is right for C++ operators.
2746 This is just a courtesy to make the matching less sensitive
2747 to how many spaces the user leaves between 'operator'
2748 and <TYPENAME> or <OPERATOR>. */
2750 char *opname = operator_chars (regexp, &opend);
2753 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2754 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2756 /* There should 1 space between 'operator' and 'TYPENAME'. */
2757 if (opname[-1] != ' ' || opname[-2] == ' ')
2762 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2763 if (opname[-1] == ' ')
2766 /* If wrong number of spaces, fix it. */
2769 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2770 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2775 if (0 != (val = re_comp (regexp)))
2776 error ("Invalid regexp (%s): %s", val, regexp);
2779 /* Search through the partial symtabs *first* for all symbols
2780 matching the regexp. That way we don't have to reproduce all of
2781 the machinery below. */
2783 ALL_PSYMTABS (objfile, ps)
2785 struct partial_symbol **bound, **gbound, **sbound;
2791 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2792 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2795 /* Go through all of the symbols stored in a partial
2796 symtab in one loop. */
2797 psym = objfile->global_psymbols.list + ps->globals_offset;
2802 if (bound == gbound && ps->n_static_syms != 0)
2804 psym = objfile->static_psymbols.list + ps->statics_offset;
2815 /* If it would match (logic taken from loop below)
2816 load the file and go on to the next one */
2817 if (file_matches (ps->filename, files, nfiles)
2819 || re_exec (SYMBOL_NATURAL_NAME (*psym)) != 0)
2820 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2821 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2822 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2823 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2824 || (kind == METHODS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2826 PSYMTAB_TO_SYMTAB (ps);
2834 /* Here, we search through the minimal symbol tables for functions
2835 and variables that match, and force their symbols to be read.
2836 This is in particular necessary for demangled variable names,
2837 which are no longer put into the partial symbol tables.
2838 The symbol will then be found during the scan of symtabs below.
2840 For functions, find_pc_symtab should succeed if we have debug info
2841 for the function, for variables we have to call lookup_symbol
2842 to determine if the variable has debug info.
2843 If the lookup fails, set found_misc so that we will rescan to print
2844 any matching symbols without debug info.
2847 if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN))
2849 ALL_MSYMBOLS (objfile, msymbol)
2851 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2852 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2853 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2854 MSYMBOL_TYPE (msymbol) == ourtype4)
2857 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
2859 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2861 /* FIXME: carlton/2003-02-04: Given that the
2862 semantics of lookup_symbol keeps on changing
2863 slightly, it would be a nice idea if we had a
2864 function lookup_symbol_minsym that found the
2865 symbol associated to a given minimal symbol (if
2867 if (kind == FUNCTIONS_DOMAIN
2868 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
2869 (struct block *) NULL,
2871 0, (struct symtab **) NULL) == NULL)
2879 ALL_SYMTABS (objfile, s)
2881 bv = BLOCKVECTOR (s);
2882 /* Often many files share a blockvector.
2883 Scan each blockvector only once so that
2884 we don't get every symbol many times.
2885 It happens that the first symtab in the list
2886 for any given blockvector is the main file. */
2888 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
2890 struct symbol_search *prevtail = tail;
2892 b = BLOCKVECTOR_BLOCK (bv, i);
2893 ALL_BLOCK_SYMBOLS (b, iter, sym)
2896 if (file_matches (s->filename, files, nfiles)
2898 || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0)
2899 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF
2900 && SYMBOL_CLASS (sym) != LOC_BLOCK
2901 && SYMBOL_CLASS (sym) != LOC_CONST)
2902 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK)
2903 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
2904 || (kind == METHODS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK))))
2907 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2911 psr->msymbol = NULL;
2923 if (prevtail == NULL)
2925 struct symbol_search dummy;
2928 tail = sort_search_symbols (&dummy, nfound);
2931 old_chain = make_cleanup_free_search_symbols (sr);
2934 tail = sort_search_symbols (prevtail, nfound);
2940 /* If there are no eyes, avoid all contact. I mean, if there are
2941 no debug symbols, then print directly from the msymbol_vector. */
2943 if (found_misc || kind != FUNCTIONS_DOMAIN)
2945 ALL_MSYMBOLS (objfile, msymbol)
2947 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2948 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2949 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2950 MSYMBOL_TYPE (msymbol) == ourtype4)
2953 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
2955 /* Functions: Look up by address. */
2956 if (kind != FUNCTIONS_DOMAIN ||
2957 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
2959 /* Variables/Absolutes: Look up by name */
2960 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
2961 (struct block *) NULL, VAR_DOMAIN,
2962 0, (struct symtab **) NULL) == NULL)
2965 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2967 psr->msymbol = msymbol;
2974 old_chain = make_cleanup_free_search_symbols (sr);
2988 discard_cleanups (old_chain);
2991 /* Helper function for symtab_symbol_info, this function uses
2992 the data returned from search_symbols() to print information
2993 regarding the match to gdb_stdout.
2996 print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym,
2997 int block, char *last)
2999 if (last == NULL || strcmp (last, s->filename) != 0)
3001 fputs_filtered ("\nFile ", gdb_stdout);
3002 fputs_filtered (s->filename, gdb_stdout);
3003 fputs_filtered (":\n", gdb_stdout);
3006 if (kind != TYPES_DOMAIN && block == STATIC_BLOCK)
3007 printf_filtered ("static ");
3009 /* Typedef that is not a C++ class */
3010 if (kind == TYPES_DOMAIN
3011 && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN)
3012 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
3013 /* variable, func, or typedef-that-is-c++-class */
3014 else if (kind < TYPES_DOMAIN ||
3015 (kind == TYPES_DOMAIN &&
3016 SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN))
3018 type_print (SYMBOL_TYPE (sym),
3019 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
3020 ? "" : SYMBOL_PRINT_NAME (sym)),
3023 printf_filtered (";\n");
3027 /* This help function for symtab_symbol_info() prints information
3028 for non-debugging symbols to gdb_stdout.
3031 print_msymbol_info (struct minimal_symbol *msymbol)
3035 if (TARGET_ADDR_BIT <= 32)
3036 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3037 & (CORE_ADDR) 0xffffffff,
3040 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3042 printf_filtered ("%s %s\n",
3043 tmp, SYMBOL_PRINT_NAME (msymbol));
3046 /* This is the guts of the commands "info functions", "info types", and
3047 "info variables". It calls search_symbols to find all matches and then
3048 print_[m]symbol_info to print out some useful information about the
3052 symtab_symbol_info (char *regexp, domain_enum kind, int from_tty)
3054 static char *classnames[]
3056 {"variable", "function", "type", "method"};
3057 struct symbol_search *symbols;
3058 struct symbol_search *p;
3059 struct cleanup *old_chain;
3060 char *last_filename = NULL;
3063 /* must make sure that if we're interrupted, symbols gets freed */
3064 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3065 old_chain = make_cleanup_free_search_symbols (symbols);
3067 printf_filtered (regexp
3068 ? "All %ss matching regular expression \"%s\":\n"
3069 : "All defined %ss:\n",
3070 classnames[(int) (kind - VARIABLES_DOMAIN)], regexp);
3072 for (p = symbols; p != NULL; p = p->next)
3076 if (p->msymbol != NULL)
3080 printf_filtered ("\nNon-debugging symbols:\n");
3083 print_msymbol_info (p->msymbol);
3087 print_symbol_info (kind,
3092 last_filename = p->symtab->filename;
3096 do_cleanups (old_chain);
3100 variables_info (char *regexp, int from_tty)
3102 symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty);
3106 functions_info (char *regexp, int from_tty)
3108 symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty);
3113 types_info (char *regexp, int from_tty)
3115 symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty);
3118 /* Breakpoint all functions matching regular expression. */
3121 rbreak_command_wrapper (char *regexp, int from_tty)
3123 rbreak_command (regexp, from_tty);
3127 rbreak_command (char *regexp, int from_tty)
3129 struct symbol_search *ss;
3130 struct symbol_search *p;
3131 struct cleanup *old_chain;
3133 search_symbols (regexp, FUNCTIONS_DOMAIN, 0, (char **) NULL, &ss);
3134 old_chain = make_cleanup_free_search_symbols (ss);
3136 for (p = ss; p != NULL; p = p->next)
3138 if (p->msymbol == NULL)
3140 char *string = alloca (strlen (p->symtab->filename)
3141 + strlen (SYMBOL_LINKAGE_NAME (p->symbol))
3143 strcpy (string, p->symtab->filename);
3144 strcat (string, ":'");
3145 strcat (string, SYMBOL_LINKAGE_NAME (p->symbol));
3146 strcat (string, "'");
3147 break_command (string, from_tty);
3148 print_symbol_info (FUNCTIONS_DOMAIN,
3152 p->symtab->filename);
3156 break_command (SYMBOL_LINKAGE_NAME (p->msymbol), from_tty);
3157 printf_filtered ("<function, no debug info> %s;\n",
3158 SYMBOL_PRINT_NAME (p->msymbol));
3162 do_cleanups (old_chain);
3166 /* Helper routine for make_symbol_completion_list. */
3168 static int return_val_size;
3169 static int return_val_index;
3170 static char **return_val;
3172 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3173 completion_list_add_name \
3174 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3176 /* Test to see if the symbol specified by SYMNAME (which is already
3177 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3178 characters. If so, add it to the current completion list. */
3181 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3182 char *text, char *word)
3187 /* clip symbols that cannot match */
3189 if (strncmp (symname, sym_text, sym_text_len) != 0)
3194 /* We have a match for a completion, so add SYMNAME to the current list
3195 of matches. Note that the name is moved to freshly malloc'd space. */
3199 if (word == sym_text)
3201 new = xmalloc (strlen (symname) + 5);
3202 strcpy (new, symname);
3204 else if (word > sym_text)
3206 /* Return some portion of symname. */
3207 new = xmalloc (strlen (symname) + 5);
3208 strcpy (new, symname + (word - sym_text));
3212 /* Return some of SYM_TEXT plus symname. */
3213 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3214 strncpy (new, word, sym_text - word);
3215 new[sym_text - word] = '\0';
3216 strcat (new, symname);
3219 if (return_val_index + 3 > return_val_size)
3221 newsize = (return_val_size *= 2) * sizeof (char *);
3222 return_val = (char **) xrealloc ((char *) return_val, newsize);
3224 return_val[return_val_index++] = new;
3225 return_val[return_val_index] = NULL;
3229 /* ObjC: In case we are completing on a selector, look as the msymbol
3230 again and feed all the selectors into the mill. */
3233 completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text,
3234 int sym_text_len, char *text, char *word)
3236 static char *tmp = NULL;
3237 static unsigned int tmplen = 0;
3239 char *method, *category, *selector;
3242 method = SYMBOL_NATURAL_NAME (msymbol);
3244 /* Is it a method? */
3245 if ((method[0] != '-') && (method[0] != '+'))
3248 if (sym_text[0] == '[')
3249 /* Complete on shortened method method. */
3250 completion_list_add_name (method + 1, sym_text, sym_text_len, text, word);
3252 while ((strlen (method) + 1) >= tmplen)
3258 tmp = xrealloc (tmp, tmplen);
3260 selector = strchr (method, ' ');
3261 if (selector != NULL)
3264 category = strchr (method, '(');
3266 if ((category != NULL) && (selector != NULL))
3268 memcpy (tmp, method, (category - method));
3269 tmp[category - method] = ' ';
3270 memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1);
3271 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3272 if (sym_text[0] == '[')
3273 completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word);
3276 if (selector != NULL)
3278 /* Complete on selector only. */
3279 strcpy (tmp, selector);
3280 tmp2 = strchr (tmp, ']');
3284 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3288 /* Break the non-quoted text based on the characters which are in
3289 symbols. FIXME: This should probably be language-specific. */
3292 language_search_unquoted_string (char *text, char *p)
3294 for (; p > text; --p)
3296 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3300 if ((current_language->la_language == language_objc))
3302 if (p[-1] == ':') /* might be part of a method name */
3304 else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+'))
3305 p -= 2; /* beginning of a method name */
3306 else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')')
3307 { /* might be part of a method name */
3310 /* Seeing a ' ' or a '(' is not conclusive evidence
3311 that we are in the middle of a method name. However,
3312 finding "-[" or "+[" should be pretty un-ambiguous.
3313 Unfortunately we have to find it now to decide. */
3316 if (isalnum (t[-1]) || t[-1] == '_' ||
3317 t[-1] == ' ' || t[-1] == ':' ||
3318 t[-1] == '(' || t[-1] == ')')
3323 if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+'))
3324 p = t - 2; /* method name detected */
3325 /* else we leave with p unchanged */
3335 /* Return a NULL terminated array of all symbols (regardless of class)
3336 which begin by matching TEXT. If the answer is no symbols, then
3337 the return value is an array which contains only a NULL pointer.
3339 Problem: All of the symbols have to be copied because readline frees them.
3340 I'm not going to worry about this; hopefully there won't be that many. */
3343 make_symbol_completion_list (char *text, char *word)
3347 struct partial_symtab *ps;
3348 struct minimal_symbol *msymbol;
3349 struct objfile *objfile;
3350 struct block *b, *surrounding_static_block = 0;
3351 struct dict_iterator iter;
3353 struct partial_symbol **psym;
3354 /* The symbol we are completing on. Points in same buffer as text. */
3356 /* Length of sym_text. */
3359 /* Now look for the symbol we are supposed to complete on.
3360 FIXME: This should be language-specific. */
3364 char *quote_pos = NULL;
3366 /* First see if this is a quoted string. */
3368 for (p = text; *p != '\0'; ++p)
3370 if (quote_found != '\0')
3372 if (*p == quote_found)
3373 /* Found close quote. */
3375 else if (*p == '\\' && p[1] == quote_found)
3376 /* A backslash followed by the quote character
3377 doesn't end the string. */
3380 else if (*p == '\'' || *p == '"')
3386 if (quote_found == '\'')
3387 /* A string within single quotes can be a symbol, so complete on it. */
3388 sym_text = quote_pos + 1;
3389 else if (quote_found == '"')
3390 /* A double-quoted string is never a symbol, nor does it make sense
3391 to complete it any other way. */
3393 return_val = (char **) xmalloc (sizeof (char *));
3394 return_val[0] = NULL;
3399 /* It is not a quoted string. Break it based on the characters
3400 which are in symbols. */
3403 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3412 sym_text_len = strlen (sym_text);
3414 return_val_size = 100;
3415 return_val_index = 0;
3416 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3417 return_val[0] = NULL;
3419 /* Look through the partial symtabs for all symbols which begin
3420 by matching SYM_TEXT. Add each one that you find to the list. */
3422 ALL_PSYMTABS (objfile, ps)
3424 /* If the psymtab's been read in we'll get it when we search
3425 through the blockvector. */
3429 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3430 psym < (objfile->global_psymbols.list + ps->globals_offset
3431 + ps->n_global_syms);
3434 /* If interrupted, then quit. */
3436 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3439 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3440 psym < (objfile->static_psymbols.list + ps->statics_offset
3441 + ps->n_static_syms);
3445 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3449 /* At this point scan through the misc symbol vectors and add each
3450 symbol you find to the list. Eventually we want to ignore
3451 anything that isn't a text symbol (everything else will be
3452 handled by the psymtab code above). */
3454 ALL_MSYMBOLS (objfile, msymbol)
3457 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3459 completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word);
3462 /* Search upwards from currently selected frame (so that we can
3463 complete on local vars. */
3465 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3467 if (!BLOCK_SUPERBLOCK (b))
3469 surrounding_static_block = b; /* For elmin of dups */
3472 /* Also catch fields of types defined in this places which match our
3473 text string. Only complete on types visible from current context. */
3475 ALL_BLOCK_SYMBOLS (b, iter, sym)
3478 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3479 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3481 struct type *t = SYMBOL_TYPE (sym);
3482 enum type_code c = TYPE_CODE (t);
3484 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3486 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3488 if (TYPE_FIELD_NAME (t, j))
3490 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3491 sym_text, sym_text_len, text, word);
3499 /* Go through the symtabs and check the externs and statics for
3500 symbols which match. */
3502 ALL_SYMTABS (objfile, s)
3505 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3506 ALL_BLOCK_SYMBOLS (b, iter, sym)
3508 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3512 ALL_SYMTABS (objfile, s)
3515 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3516 /* Don't do this block twice. */
3517 if (b == surrounding_static_block)
3519 ALL_BLOCK_SYMBOLS (b, iter, sym)
3521 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3525 return (return_val);
3528 /* Like make_symbol_completion_list, but returns a list of symbols
3529 defined in a source file FILE. */
3532 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3537 struct dict_iterator iter;
3538 /* The symbol we are completing on. Points in same buffer as text. */
3540 /* Length of sym_text. */
3543 /* Now look for the symbol we are supposed to complete on.
3544 FIXME: This should be language-specific. */
3548 char *quote_pos = NULL;
3550 /* First see if this is a quoted string. */
3552 for (p = text; *p != '\0'; ++p)
3554 if (quote_found != '\0')
3556 if (*p == quote_found)
3557 /* Found close quote. */
3559 else if (*p == '\\' && p[1] == quote_found)
3560 /* A backslash followed by the quote character
3561 doesn't end the string. */
3564 else if (*p == '\'' || *p == '"')
3570 if (quote_found == '\'')
3571 /* A string within single quotes can be a symbol, so complete on it. */
3572 sym_text = quote_pos + 1;
3573 else if (quote_found == '"')
3574 /* A double-quoted string is never a symbol, nor does it make sense
3575 to complete it any other way. */
3577 return_val = (char **) xmalloc (sizeof (char *));
3578 return_val[0] = NULL;
3583 /* Not a quoted string. */
3584 sym_text = language_search_unquoted_string (text, p);
3588 sym_text_len = strlen (sym_text);
3590 return_val_size = 10;
3591 return_val_index = 0;
3592 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3593 return_val[0] = NULL;
3595 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3597 s = lookup_symtab (srcfile);
3600 /* Maybe they typed the file with leading directories, while the
3601 symbol tables record only its basename. */
3602 const char *tail = lbasename (srcfile);
3605 s = lookup_symtab (tail);
3608 /* If we have no symtab for that file, return an empty list. */
3610 return (return_val);
3612 /* Go through this symtab and check the externs and statics for
3613 symbols which match. */
3615 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3616 ALL_BLOCK_SYMBOLS (b, iter, sym)
3618 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3621 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3622 ALL_BLOCK_SYMBOLS (b, iter, sym)
3624 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3627 return (return_val);
3630 /* A helper function for make_source_files_completion_list. It adds
3631 another file name to a list of possible completions, growing the
3632 list as necessary. */
3635 add_filename_to_list (const char *fname, char *text, char *word,
3636 char ***list, int *list_used, int *list_alloced)
3639 size_t fnlen = strlen (fname);
3641 if (*list_used + 1 >= *list_alloced)
3644 *list = (char **) xrealloc ((char *) *list,
3645 *list_alloced * sizeof (char *));
3650 /* Return exactly fname. */
3651 new = xmalloc (fnlen + 5);
3652 strcpy (new, fname);
3654 else if (word > text)
3656 /* Return some portion of fname. */
3657 new = xmalloc (fnlen + 5);
3658 strcpy (new, fname + (word - text));
3662 /* Return some of TEXT plus fname. */
3663 new = xmalloc (fnlen + (text - word) + 5);
3664 strncpy (new, word, text - word);
3665 new[text - word] = '\0';
3666 strcat (new, fname);
3668 (*list)[*list_used] = new;
3669 (*list)[++*list_used] = NULL;
3673 not_interesting_fname (const char *fname)
3675 static const char *illegal_aliens[] = {
3676 "_globals_", /* inserted by coff_symtab_read */
3681 for (i = 0; illegal_aliens[i]; i++)
3683 if (strcmp (fname, illegal_aliens[i]) == 0)
3689 /* Return a NULL terminated array of all source files whose names
3690 begin with matching TEXT. The file names are looked up in the
3691 symbol tables of this program. If the answer is no matchess, then
3692 the return value is an array which contains only a NULL pointer. */
3695 make_source_files_completion_list (char *text, char *word)
3698 struct partial_symtab *ps;
3699 struct objfile *objfile;
3701 int list_alloced = 1;
3703 size_t text_len = strlen (text);
3704 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3705 const char *base_name;
3709 if (!have_full_symbols () && !have_partial_symbols ())
3712 ALL_SYMTABS (objfile, s)
3714 if (not_interesting_fname (s->filename))
3716 if (!filename_seen (s->filename, 1, &first)
3717 #if HAVE_DOS_BASED_FILE_SYSTEM
3718 && strncasecmp (s->filename, text, text_len) == 0
3720 && strncmp (s->filename, text, text_len) == 0
3724 /* This file matches for a completion; add it to the current
3726 add_filename_to_list (s->filename, text, word,
3727 &list, &list_used, &list_alloced);
3731 /* NOTE: We allow the user to type a base name when the
3732 debug info records leading directories, but not the other
3733 way around. This is what subroutines of breakpoint
3734 command do when they parse file names. */
3735 base_name = lbasename (s->filename);
3736 if (base_name != s->filename
3737 && !filename_seen (base_name, 1, &first)
3738 #if HAVE_DOS_BASED_FILE_SYSTEM
3739 && strncasecmp (base_name, text, text_len) == 0
3741 && strncmp (base_name, text, text_len) == 0
3744 add_filename_to_list (base_name, text, word,
3745 &list, &list_used, &list_alloced);
3749 ALL_PSYMTABS (objfile, ps)
3751 if (not_interesting_fname (ps->filename))
3755 if (!filename_seen (ps->filename, 1, &first)
3756 #if HAVE_DOS_BASED_FILE_SYSTEM
3757 && strncasecmp (ps->filename, text, text_len) == 0
3759 && strncmp (ps->filename, text, text_len) == 0
3763 /* This file matches for a completion; add it to the
3764 current list of matches. */
3765 add_filename_to_list (ps->filename, text, word,
3766 &list, &list_used, &list_alloced);
3771 base_name = lbasename (ps->filename);
3772 if (base_name != ps->filename
3773 && !filename_seen (base_name, 1, &first)
3774 #if HAVE_DOS_BASED_FILE_SYSTEM
3775 && strncasecmp (base_name, text, text_len) == 0
3777 && strncmp (base_name, text, text_len) == 0
3780 add_filename_to_list (base_name, text, word,
3781 &list, &list_used, &list_alloced);
3789 /* Determine if PC is in the prologue of a function. The prologue is the area
3790 between the first instruction of a function, and the first executable line.
3791 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3793 If non-zero, func_start is where we think the prologue starts, possibly
3794 by previous examination of symbol table information.
3798 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
3800 struct symtab_and_line sal;
3801 CORE_ADDR func_addr, func_end;
3803 /* We have several sources of information we can consult to figure
3805 - Compilers usually emit line number info that marks the prologue
3806 as its own "source line". So the ending address of that "line"
3807 is the end of the prologue. If available, this is the most
3809 - The minimal symbols and partial symbols, which can usually tell
3810 us the starting and ending addresses of a function.
3811 - If we know the function's start address, we can call the
3812 architecture-defined SKIP_PROLOGUE function to analyze the
3813 instruction stream and guess where the prologue ends.
3814 - Our `func_start' argument; if non-zero, this is the caller's
3815 best guess as to the function's entry point. At the time of
3816 this writing, handle_inferior_event doesn't get this right, so
3817 it should be our last resort. */
3819 /* Consult the partial symbol table, to find which function
3821 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3823 CORE_ADDR prologue_end;
3825 /* We don't even have minsym information, so fall back to using
3826 func_start, if given. */
3828 return 1; /* We *might* be in a prologue. */
3830 prologue_end = SKIP_PROLOGUE (func_start);
3832 return func_start <= pc && pc < prologue_end;
3835 /* If we have line number information for the function, that's
3836 usually pretty reliable. */
3837 sal = find_pc_line (func_addr, 0);
3839 /* Now sal describes the source line at the function's entry point,
3840 which (by convention) is the prologue. The end of that "line",
3841 sal.end, is the end of the prologue.
3843 Note that, for functions whose source code is all on a single
3844 line, the line number information doesn't always end up this way.
3845 So we must verify that our purported end-of-prologue address is
3846 *within* the function, not at its start or end. */
3848 || sal.end <= func_addr
3849 || func_end <= sal.end)
3851 /* We don't have any good line number info, so use the minsym
3852 information, together with the architecture-specific prologue
3854 CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr);
3856 return func_addr <= pc && pc < prologue_end;
3859 /* We have line number info, and it looks good. */
3860 return func_addr <= pc && pc < sal.end;
3864 struct symtabs_and_lines
3865 decode_line_spec (char *string, int funfirstline)
3867 struct symtabs_and_lines sals;
3868 struct symtab_and_line cursal;
3871 error ("Empty line specification.");
3873 /* We use whatever is set as the current source line. We do not try
3874 and get a default or it will recursively call us! */
3875 cursal = get_current_source_symtab_and_line ();
3877 sals = decode_line_1 (&string, funfirstline,
3878 cursal.symtab, cursal.line,
3879 (char ***) NULL, NULL);
3882 error ("Junk at end of line specification: %s", string);
3887 static char *name_of_main;
3890 set_main_name (const char *name)
3892 if (name_of_main != NULL)
3894 xfree (name_of_main);
3895 name_of_main = NULL;
3899 name_of_main = xstrdup (name);
3906 if (name_of_main != NULL)
3907 return name_of_main;
3914 _initialize_symtab (void)
3916 add_info ("variables", variables_info,
3917 "All global and static variable names, or those matching REGEXP.");
3919 add_com ("whereis", class_info, variables_info,
3920 "All global and static variable names, or those matching REGEXP.");
3922 add_info ("functions", functions_info,
3923 "All function names, or those matching REGEXP.");
3926 /* FIXME: This command has at least the following problems:
3927 1. It prints builtin types (in a very strange and confusing fashion).
3928 2. It doesn't print right, e.g. with
3929 typedef struct foo *FOO
3930 type_print prints "FOO" when we want to make it (in this situation)
3931 print "struct foo *".
3932 I also think "ptype" or "whatis" is more likely to be useful (but if
3933 there is much disagreement "info types" can be fixed). */
3934 add_info ("types", types_info,
3935 "All type names, or those matching REGEXP.");
3937 add_info ("sources", sources_info,
3938 "Source files in the program.");
3940 add_com ("rbreak", class_breakpoint, rbreak_command,
3941 "Set a breakpoint for all functions matching REGEXP.");
3945 add_com ("lf", class_info, sources_info, "Source files in the program");
3946 add_com ("lg", class_info, variables_info,
3947 "All global and static variable names, or those matching REGEXP.");
3950 /* Initialize the one built-in type that isn't language dependent... */
3951 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
3952 "<unknown type>", (struct objfile *) NULL);