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 Free Software
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 */
44 #include "gdb_obstack.h"
46 #include <sys/types.h>
48 #include "gdb_string.h"
53 /* Prototypes for local functions */
55 static void completion_list_add_name (char *, char *, int, char *, char *);
57 static void rbreak_command (char *, int);
59 static void types_info (char *, int);
61 static void functions_info (char *, int);
63 static void variables_info (char *, int);
65 static void sources_info (char *, int);
67 static void output_source_filename (char *, int *);
69 static int find_line_common (struct linetable *, int, int *);
71 /* This one is used by linespec.c */
73 char *operator_chars (char *p, char **end);
75 static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
79 static struct symbol *lookup_symbol_aux (const char *name,
80 const char *mangled_name,
81 const struct block *block,
82 const namespace_enum namespace,
83 int *is_a_field_of_this,
84 struct symtab **symtab);
86 static struct symbol *lookup_symbol_aux_local (const char *name,
87 const char *mangled_name,
88 const struct block *block,
89 const namespace_enum namespace,
90 struct symtab **symtab);
93 struct symbol *lookup_symbol_aux_symtabs (int block_index,
95 const char *mangled_name,
96 const namespace_enum namespace,
97 struct symtab **symtab);
100 struct symbol *lookup_symbol_aux_psymtabs (int block_index,
102 const char *mangled_name,
103 const namespace_enum namespace,
104 struct symtab **symtab);
107 struct symbol *lookup_symbol_aux_minsyms (const char *name,
108 const char *mangled_name,
109 const namespace_enum namespace,
110 int *is_a_field_of_this,
111 struct symtab **symtab,
114 static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr);
116 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
117 /* Signals the presence of objects compiled by HP compilers */
118 int hp_som_som_object_present = 0;
120 static void fixup_section (struct general_symbol_info *, struct objfile *);
122 static int file_matches (char *, char **, int);
124 static void print_symbol_info (namespace_enum,
125 struct symtab *, struct symbol *, int, char *);
127 static void print_msymbol_info (struct minimal_symbol *);
129 static void symtab_symbol_info (char *, namespace_enum, int);
131 static void overload_list_add_symbol (struct symbol *sym, char *oload_name);
133 void _initialize_symtab (void);
137 /* The single non-language-specific builtin type */
138 struct type *builtin_type_error;
140 /* Block in which the most recently searched-for symbol was found.
141 Might be better to make this a parameter to lookup_symbol and
144 const struct block *block_found;
146 /* Check for a symtab of a specific name; first in symtabs, then in
147 psymtabs. *If* there is no '/' in the name, a match after a '/'
148 in the symtab filename will also work. */
151 lookup_symtab (const char *name)
153 register struct symtab *s;
154 register struct partial_symtab *ps;
155 register struct objfile *objfile;
156 char *real_path = NULL;
157 char *full_path = NULL;
159 /* Here we are interested in canonicalizing an absolute path, not
160 absolutizing a relative path. */
161 if (IS_ABSOLUTE_PATH (name))
163 full_path = xfullpath (name);
164 make_cleanup (xfree, full_path);
165 real_path = gdb_realpath (name);
166 make_cleanup (xfree, real_path);
171 /* First, search for an exact match */
173 ALL_SYMTABS (objfile, s)
175 if (FILENAME_CMP (name, s->filename) == 0)
180 /* If the user gave us an absolute path, try to find the file in
181 this symtab and use its absolute path. */
183 if (full_path != NULL)
185 const char *fp = symtab_to_filename (s);
186 if (FILENAME_CMP (full_path, fp) == 0)
192 if (real_path != NULL)
194 char *rp = gdb_realpath (symtab_to_filename (s));
195 make_cleanup (xfree, rp);
196 if (FILENAME_CMP (real_path, rp) == 0)
203 /* Now, search for a matching tail (only if name doesn't have any dirs) */
205 if (lbasename (name) == name)
206 ALL_SYMTABS (objfile, s)
208 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
212 /* Same search rules as above apply here, but now we look thru the
215 ps = lookup_partial_symtab (name);
220 error ("Internal: readin %s pst for `%s' found when no symtab found.",
223 s = PSYMTAB_TO_SYMTAB (ps);
228 /* At this point, we have located the psymtab for this file, but
229 the conversion to a symtab has failed. This usually happens
230 when we are looking up an include file. In this case,
231 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
232 been created. So, we need to run through the symtabs again in
233 order to find the file.
234 XXX - This is a crock, and should be fixed inside of the the
235 symbol parsing routines. */
239 /* Lookup the partial symbol table of a source file named NAME.
240 *If* there is no '/' in the name, a match after a '/'
241 in the psymtab filename will also work. */
243 struct partial_symtab *
244 lookup_partial_symtab (const char *name)
246 register struct partial_symtab *pst;
247 register struct objfile *objfile;
248 char *full_path = NULL;
249 char *real_path = NULL;
251 /* Here we are interested in canonicalizing an absolute path, not
252 absolutizing a relative path. */
253 if (IS_ABSOLUTE_PATH (name))
255 full_path = xfullpath (name);
256 make_cleanup (xfree, full_path);
257 real_path = gdb_realpath (name);
258 make_cleanup (xfree, real_path);
261 ALL_PSYMTABS (objfile, pst)
263 if (FILENAME_CMP (name, pst->filename) == 0)
268 /* If the user gave us an absolute path, try to find the file in
269 this symtab and use its absolute path. */
270 if (full_path != NULL)
272 if (pst->fullname == NULL)
273 source_full_path_of (pst->filename, &pst->fullname);
274 if (pst->fullname != NULL
275 && FILENAME_CMP (full_path, pst->fullname) == 0)
281 if (real_path != NULL)
284 if (pst->fullname == NULL)
285 source_full_path_of (pst->filename, &pst->fullname);
286 if (pst->fullname != NULL)
288 rp = gdb_realpath (pst->fullname);
289 make_cleanup (xfree, rp);
291 if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
298 /* Now, search for a matching tail (only if name doesn't have any dirs) */
300 if (lbasename (name) == name)
301 ALL_PSYMTABS (objfile, pst)
303 if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
310 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
311 full method name, which consist of the class name (from T), the unadorned
312 method name from METHOD_ID, and the signature for the specific overload,
313 specified by SIGNATURE_ID. Note that this function is g++ specific. */
316 gdb_mangle_name (struct type *type, int method_id, int signature_id)
318 int mangled_name_len;
320 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
321 struct fn_field *method = &f[signature_id];
322 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
323 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
324 char *newname = type_name_no_tag (type);
326 /* Does the form of physname indicate that it is the full mangled name
327 of a constructor (not just the args)? */
328 int is_full_physname_constructor;
331 int is_destructor = is_destructor_name (physname);
332 /* Need a new type prefix. */
333 char *const_prefix = method->is_const ? "C" : "";
334 char *volatile_prefix = method->is_volatile ? "V" : "";
336 int len = (newname == NULL ? 0 : strlen (newname));
338 /* Nothing to do if physname already contains a fully mangled v3 abi name
339 or an operator name. */
340 if ((physname[0] == '_' && physname[1] == 'Z')
341 || is_operator_name (field_name))
342 return xstrdup (physname);
344 is_full_physname_constructor = is_constructor_name (physname);
347 is_full_physname_constructor || (newname && STREQ (field_name, newname));
350 is_destructor = (strncmp (physname, "__dt", 4) == 0);
352 if (is_destructor || is_full_physname_constructor)
354 mangled_name = (char *) xmalloc (strlen (physname) + 1);
355 strcpy (mangled_name, physname);
361 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
363 else if (physname[0] == 't' || physname[0] == 'Q')
365 /* The physname for template and qualified methods already includes
367 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
373 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
375 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
376 + strlen (buf) + len + strlen (physname) + 1);
379 mangled_name = (char *) xmalloc (mangled_name_len);
381 mangled_name[0] = '\0';
383 strcpy (mangled_name, field_name);
385 strcat (mangled_name, buf);
386 /* If the class doesn't have a name, i.e. newname NULL, then we just
387 mangle it using 0 for the length of the class. Thus it gets mangled
388 as something starting with `::' rather than `classname::'. */
390 strcat (mangled_name, newname);
392 strcat (mangled_name, physname);
393 return (mangled_name);
397 /* Initialize the language dependent portion of a symbol
398 depending upon the language for the symbol. */
400 symbol_init_language_specific (struct general_symbol_info *gsymbol,
401 enum language language)
403 gsymbol->language = language;
404 if (gsymbol->language == language_cplus
405 || gsymbol->language == language_java)
407 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
409 else if (gsymbol->language == language_objc)
411 gsymbol->language_specific.objc_specific.demangled_name = NULL;
413 /* OBSOLETE else if (SYMBOL_LANGUAGE (symbol) == language_chill) */
415 /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; */
419 memset (&gsymbol->language_specific, 0,
420 sizeof (gsymbol->language_specific));
424 /* Initialize a symbol's mangled name. */
426 /* Try to initialize the demangled name for a symbol, based on the
427 language of that symbol. If the language is set to language_auto,
428 it will attempt to find any demangling algorithm that works and
429 then set the language appropriately. If no demangling of any kind
430 is found, the language is set back to language_unknown, so we can
431 avoid doing this work again the next time we encounter the symbol.
432 Any required space to store the name is obtained from the specified
436 symbol_init_demangled_name (struct general_symbol_info *gsymbol,
437 struct obstack *obstack)
439 char *mangled = gsymbol->name;
440 char *demangled = NULL;
442 if (gsymbol->language == language_unknown)
443 gsymbol->language = language_auto;
444 if (gsymbol->language == language_cplus
445 || gsymbol->language == language_auto)
448 cplus_demangle (gsymbol->name, DMGL_PARAMS | DMGL_ANSI);
449 if (demangled != NULL)
451 gsymbol->language = language_cplus;
452 gsymbol->language_specific.cplus_specific.demangled_name =
453 obsavestring (demangled, strlen (demangled), obstack);
458 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
461 if (gsymbol->language == language_java)
464 cplus_demangle (gsymbol->name,
465 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
466 if (demangled != NULL)
468 gsymbol->language = language_java;
469 gsymbol->language_specific.cplus_specific.demangled_name =
470 obsavestring (demangled, strlen (demangled), obstack);
475 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
479 /* OBSOLETE if (demangled == NULL */
480 /* OBSOLETE && (gsymbol->language == language_chill */
481 /* OBSOLETE || gsymbol->language == language_auto)) */
483 /* OBSOLETE demangled = */
484 /* OBSOLETE chill_demangle (gsymbol->name); */
485 /* OBSOLETE if (demangled != NULL) */
487 /* OBSOLETE gsymbol->language = language_chill; */
488 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = */
489 /* OBSOLETE obsavestring (demangled, strlen (demangled), obstack); */
490 /* OBSOLETE xfree (demangled); */
494 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = NULL; */
500 /* Return the demangled name for a symbol based on the language for
501 that symbol. If no demangled name exists, return NULL. */
503 symbol_demangled_name (struct general_symbol_info *gsymbol)
505 if (gsymbol->language == language_cplus
506 || gsymbol->language == language_java)
507 return gsymbol->language_specific.cplus_specific.demangled_name;
509 else if (gsymbol->language == language_objc)
510 return gsymbol->language_specific.objc_specific.demangled_name;
515 /* OBSOLETE (SYMBOL_LANGUAGE (symbol) == language_chill */
516 /* OBSOLETE ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) */
519 /* Initialize the structure fields to zero values. */
521 init_sal (struct symtab_and_line *sal)
532 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
534 struct partial_symtab *
535 find_pc_sect_psymtab (CORE_ADDR pc, asection *section)
537 register struct partial_symtab *pst;
538 register struct objfile *objfile;
539 struct minimal_symbol *msymbol;
541 /* If we know that this is not a text address, return failure. This is
542 necessary because we loop based on texthigh and textlow, which do
543 not include the data ranges. */
544 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
546 && (msymbol->type == mst_data
547 || msymbol->type == mst_bss
548 || msymbol->type == mst_abs
549 || msymbol->type == mst_file_data
550 || msymbol->type == mst_file_bss))
553 ALL_PSYMTABS (objfile, pst)
555 if (pc >= pst->textlow && pc < pst->texthigh)
557 struct partial_symtab *tpst;
559 /* An objfile that has its functions reordered might have
560 many partial symbol tables containing the PC, but
561 we want the partial symbol table that contains the
562 function containing the PC. */
563 if (!(objfile->flags & OBJF_REORDERED) &&
564 section == 0) /* can't validate section this way */
570 for (tpst = pst; tpst != NULL; tpst = tpst->next)
572 if (pc >= tpst->textlow && pc < tpst->texthigh)
574 struct partial_symbol *p;
576 p = find_pc_sect_psymbol (tpst, pc, section);
578 && SYMBOL_VALUE_ADDRESS (p)
579 == SYMBOL_VALUE_ADDRESS (msymbol))
589 /* Find which partial symtab contains PC. Return 0 if none.
590 Backward compatibility, no section */
592 struct partial_symtab *
593 find_pc_psymtab (CORE_ADDR pc)
595 return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
598 /* Find which partial symbol within a psymtab matches PC and SECTION.
599 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
601 struct partial_symbol *
602 find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
605 struct partial_symbol *best = NULL, *p, **pp;
609 psymtab = find_pc_sect_psymtab (pc, section);
613 /* Cope with programs that start at address 0 */
614 best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
616 /* Search the global symbols as well as the static symbols, so that
617 find_pc_partial_function doesn't use a minimal symbol and thus
618 cache a bad endaddr. */
619 for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
620 (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
621 < psymtab->n_global_syms);
625 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
626 && SYMBOL_CLASS (p) == LOC_BLOCK
627 && pc >= SYMBOL_VALUE_ADDRESS (p)
628 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
629 || (psymtab->textlow == 0
630 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
632 if (section) /* match on a specific section */
634 fixup_psymbol_section (p, psymtab->objfile);
635 if (SYMBOL_BFD_SECTION (p) != section)
638 best_pc = SYMBOL_VALUE_ADDRESS (p);
643 for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
644 (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
645 < psymtab->n_static_syms);
649 if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
650 && SYMBOL_CLASS (p) == LOC_BLOCK
651 && pc >= SYMBOL_VALUE_ADDRESS (p)
652 && (SYMBOL_VALUE_ADDRESS (p) > best_pc
653 || (psymtab->textlow == 0
654 && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
656 if (section) /* match on a specific section */
658 fixup_psymbol_section (p, psymtab->objfile);
659 if (SYMBOL_BFD_SECTION (p) != section)
662 best_pc = SYMBOL_VALUE_ADDRESS (p);
670 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
671 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
673 struct partial_symbol *
674 find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc)
676 return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
679 /* Debug symbols usually don't have section information. We need to dig that
680 out of the minimal symbols and stash that in the debug symbol. */
683 fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile)
685 struct minimal_symbol *msym;
686 msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
690 ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
691 ginfo->section = SYMBOL_SECTION (msym);
696 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
701 if (SYMBOL_BFD_SECTION (sym))
704 fixup_section (&sym->ginfo, objfile);
709 struct partial_symbol *
710 fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
715 if (SYMBOL_BFD_SECTION (psym))
718 fixup_section (&psym->ginfo, objfile);
723 /* Find the definition for a specified symbol name NAME
724 in namespace NAMESPACE, visible from lexical block BLOCK.
725 Returns the struct symbol pointer, or zero if no symbol is found.
726 If SYMTAB is non-NULL, store the symbol table in which the
727 symbol was found there, or NULL if not found.
728 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
729 NAME is a field of the current implied argument `this'. If so set
730 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
731 BLOCK_FOUND is set to the block in which NAME is found (in the case of
732 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
734 /* This function has a bunch of loops in it and it would seem to be
735 attractive to put in some QUIT's (though I'm not really sure
736 whether it can run long enough to be really important). But there
737 are a few calls for which it would appear to be bad news to quit
738 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
739 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
740 code below which can error(), but that probably doesn't affect
741 these calls since they are looking for a known variable and thus
742 can probably assume it will never hit the C++ code). */
745 lookup_symbol (const char *name, const struct block *block,
746 const namespace_enum namespace, int *is_a_field_of_this,
747 struct symtab **symtab)
749 char *demangled_name = NULL;
750 const char *modified_name = NULL;
751 const char *mangled_name = NULL;
752 int needtofreename = 0;
753 struct symbol *returnval;
755 modified_name = name;
757 /* If we are using C++ language, demangle the name before doing a lookup, so
758 we can always binary search. */
759 if (current_language->la_language == language_cplus)
761 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
765 modified_name = demangled_name;
770 if (case_sensitivity == case_sensitive_off)
776 copy = (char *) alloca (len + 1);
777 for (i= 0; i < len; i++)
778 copy[i] = tolower (name[i]);
780 modified_name = copy;
783 returnval = lookup_symbol_aux (modified_name, mangled_name, block,
784 namespace, is_a_field_of_this, symtab);
786 xfree (demangled_name);
791 static struct symbol *
792 lookup_symbol_aux (const char *name, const char *mangled_name,
793 const struct block *block, const namespace_enum namespace,
794 int *is_a_field_of_this, struct symtab **symtab)
798 /* FIXME: carlton/2002-11-05: This variable is here so that
799 lookup_symbol_aux will sometimes return NULL after receiving a
800 NULL return value from lookup_symbol_aux_minsyms, without
801 proceeding on to the partial symtab and static variable tests. I
802 suspect that that's a bad idea. */
806 /* Search specified block and its superiors. */
808 sym = lookup_symbol_aux_local (name, mangled_name, block, namespace,
814 /* NOTE: carlton/2002-11-05: At the time that this code was
815 #ifdeffed out, the value of 'block' was always NULL at this
816 point, hence the bemused comments below. */
818 /* FIXME: this code is never executed--block is always NULL at this
819 point. What is it trying to do, anyway? We already should have
820 checked the STATIC_BLOCK above (it is the superblock of top-level
821 blocks). Why is VAR_NAMESPACE special-cased? */
822 /* Don't need to mess with the psymtabs; if we have a block,
823 that file is read in. If we don't, then we deal later with
824 all the psymtab stuff that needs checking. */
825 /* Note (RT): The following never-executed code looks unnecessary to me also.
826 * If we change the code to use the original (passed-in)
827 * value of 'block', we could cause it to execute, but then what
828 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
829 * 'block' was already searched by the above code. And the STATIC_BLOCK's
830 * of *other* symtabs (those files not containing 'block' lexically)
831 * should not contain 'block' address-wise. So we wouldn't expect this
832 * code to find any 'sym''s that were not found above. I vote for
833 * deleting the following paragraph of code.
835 if (namespace == VAR_NAMESPACE && block != NULL)
838 /* Find the right symtab. */
839 ALL_SYMTABS (objfile, s)
841 bv = BLOCKVECTOR (s);
842 b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
843 if (BLOCK_START (b) <= BLOCK_START (block)
844 && BLOCK_END (b) > BLOCK_START (block))
846 sym = lookup_block_symbol (b, name, mangled_name, VAR_NAMESPACE);
852 return fixup_symbol_section (sym, objfile);
859 /* C++: If requested to do so by the caller,
860 check to see if NAME is a field of `this'. */
861 if (is_a_field_of_this)
863 struct value *v = value_of_this (0);
865 *is_a_field_of_this = 0;
866 if (v && check_field (v, name))
868 *is_a_field_of_this = 1;
875 /* Now search all global blocks. Do the symtab's first, then
876 check the psymtab's. If a psymtab indicates the existence
877 of the desired name as a global, then do psymtab-to-symtab
878 conversion on the fly and return the found symbol. */
880 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, mangled_name,
887 /* Check for the possibility of the symbol being a function or
888 a mangled variable that is stored in one of the minimal symbol tables.
889 Eventually, all global symbols might be resolved in this way. */
893 sym = lookup_symbol_aux_minsyms (name, mangled_name,
894 namespace, is_a_field_of_this,
895 symtab, &force_return);
897 if (sym != NULL || force_return == 1)
902 sym = lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, mangled_name,
907 /* Now search all static file-level symbols. Not strictly correct,
908 but more useful than an error. Do the symtabs first, then check
909 the psymtabs. If a psymtab indicates the existence of the
910 desired name as a file-level static, then do psymtab-to-symtab
911 conversion on the fly and return the found symbol. */
913 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, mangled_name,
918 sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, mangled_name,
925 /* Check for the possibility of the symbol being a function or
926 a global variable that is stored in one of the minimal symbol tables.
927 The "minimal symbol table" is built from linker-supplied info.
929 RT: I moved this check to last, after the complete search of
930 the global (p)symtab's and static (p)symtab's. For HP-generated
931 symbol tables, this check was causing a premature exit from
932 lookup_symbol with NULL return, and thus messing up symbol lookups
933 of things like "c::f". It seems to me a check of the minimal
934 symbol table ought to be a last resort in any case. I'm vaguely
935 worried about the comment below which talks about FORTRAN routines "foo_"
936 though... is it saying we need to do the "minsym" check before
937 the static check in this case?
943 sym = lookup_symbol_aux_minsyms (name, mangled_name,
944 namespace, is_a_field_of_this,
945 symtab, &force_return);
947 if (sym != NULL || force_return == 1)
957 /* Check to see if the symbol is defined in BLOCK or its
960 static struct symbol *
961 lookup_symbol_aux_local (const char *name, const char *mangled_name,
962 const struct block *block,
963 const namespace_enum namespace,
964 struct symtab **symtab)
967 struct objfile *objfile = NULL;
968 struct blockvector *bv;
970 struct symtab *s = NULL;
974 sym = lookup_block_symbol (block, name, mangled_name, namespace);
980 /* Search the list of symtabs for one which contains the
981 address of the start of this block. */
982 ALL_SYMTABS (objfile, s)
984 bv = BLOCKVECTOR (s);
985 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
986 if (BLOCK_START (b) <= BLOCK_START (block)
987 && BLOCK_END (b) > BLOCK_START (block))
994 return fixup_symbol_section (sym, objfile);
996 block = BLOCK_SUPERBLOCK (block);
1002 /* Check to see if the symbol is defined in one of the symtabs.
1003 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1004 depending on whether or not we want to search global symbols or
1007 static struct symbol *
1008 lookup_symbol_aux_symtabs (int block_index,
1009 const char *name, const char *mangled_name,
1010 const namespace_enum namespace,
1011 struct symtab **symtab)
1014 struct objfile *objfile;
1015 struct blockvector *bv;
1016 const struct block *block;
1019 ALL_SYMTABS (objfile, s)
1021 bv = BLOCKVECTOR (s);
1022 block = BLOCKVECTOR_BLOCK (bv, block_index);
1023 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1026 block_found = block;
1029 return fixup_symbol_section (sym, objfile);
1036 /* Check to see if the symbol is defined in one of the partial
1037 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1038 STATIC_BLOCK, depending on whether or not we want to search global
1039 symbols or static symbols. */
1041 static struct symbol *
1042 lookup_symbol_aux_psymtabs (int block_index, const char *name,
1043 const char *mangled_name,
1044 const namespace_enum namespace,
1045 struct symtab **symtab)
1048 struct objfile *objfile;
1049 struct blockvector *bv;
1050 const struct block *block;
1051 struct partial_symtab *ps;
1053 const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
1055 ALL_PSYMTABS (objfile, ps)
1058 && lookup_partial_symbol (ps, name, psymtab_index, namespace))
1060 s = PSYMTAB_TO_SYMTAB (ps);
1061 bv = BLOCKVECTOR (s);
1062 block = BLOCKVECTOR_BLOCK (bv, block_index);
1063 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1066 /* This shouldn't be necessary, but as a last resort try
1067 looking in the statics even though the psymtab claimed
1068 the symbol was global, or vice-versa. It's possible
1069 that the psymtab gets it wrong in some cases. */
1071 /* FIXME: carlton/2002-09-30: Should we really do that?
1072 If that happens, isn't it likely to be a GDB error, in
1073 which case we should fix the GDB error rather than
1074 silently dealing with it here? So I'd vote for
1075 removing the check for the symbol in the other
1077 block = BLOCKVECTOR_BLOCK (bv,
1078 block_index == GLOBAL_BLOCK ?
1079 STATIC_BLOCK : GLOBAL_BLOCK);
1080 sym = lookup_block_symbol (block, name, mangled_name, namespace);
1082 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>).",
1083 block_index == GLOBAL_BLOCK ? "global" : "static",
1084 name, ps->filename, name, name);
1088 return fixup_symbol_section (sym, objfile);
1095 /* Check for the possibility of the symbol being a function or a
1096 mangled variable that is stored in one of the minimal symbol
1097 tables. Eventually, all global symbols might be resolved in this
1100 static struct symbol *
1101 lookup_symbol_aux_minsyms (const char *name,
1102 const char *mangled_name,
1103 const namespace_enum namespace,
1104 int *is_a_field_of_this,
1105 struct symtab **symtab,
1109 struct blockvector *bv;
1110 const struct block *block;
1111 struct minimal_symbol *msymbol;
1114 if (namespace == VAR_NAMESPACE)
1116 msymbol = lookup_minimal_symbol (name, NULL, NULL);
1118 if (msymbol != NULL)
1120 /* OK, we found a minimal symbol in spite of not finding any
1121 symbol. There are various possible explanations for
1122 this. One possibility is the symbol exists in code not
1123 compiled -g. Another possibility is that the 'psymtab'
1124 isn't doing its job. A third possibility, related to #2,
1125 is that we were confused by name-mangling. For instance,
1126 maybe the psymtab isn't doing its job because it only
1127 know about demangled names, but we were given a mangled
1130 /* We first use the address in the msymbol to try to locate
1131 the appropriate symtab. Note that find_pc_sect_symtab()
1132 has a side-effect of doing psymtab-to-symtab expansion,
1133 for the found symtab. */
1134 s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
1135 SYMBOL_BFD_SECTION (msymbol));
1138 /* This is a function which has a symtab for its address. */
1139 bv = BLOCKVECTOR (s);
1140 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1142 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
1143 `name' argument to lookup_block_symbol. But the name
1144 of a minimal symbol is always mangled, so that seems
1145 to be clearly the wrong thing to pass as the
1148 lookup_block_symbol (block, name, mangled_name, namespace);
1149 /* We kept static functions in minimal symbol table as well as
1150 in static scope. We want to find them in the symbol table. */
1153 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1154 sym = lookup_block_symbol (block, name,
1155 mangled_name, namespace);
1158 /* NOTE: carlton/2002-12-04: The following comment was
1159 taken from a time when two versions of this function
1160 were part of the body of lookup_symbol_aux: this
1161 comment was taken from the version of the function
1162 that was #ifdef HPUXHPPA, and the comment was right
1163 before the 'return NULL' part of lookup_symbol_aux.
1164 (Hence the "Fall through and return 0" comment.)
1165 Elena did some digging into the situation for
1166 Fortran, and she reports:
1168 "I asked around (thanks to Jeff Knaggs), and I think
1169 the story for Fortran goes like this:
1171 "Apparently, in older Fortrans, '_' was not part of
1172 the user namespace. g77 attached a final '_' to
1173 procedure names as the exported symbols for linkage
1174 (foo_) , but the symbols went in the debug info just
1175 like 'foo'. The rationale behind this is not
1176 completely clear, and maybe it was done to other
1177 symbols as well, not just procedures." */
1179 /* If we get here with sym == 0, the symbol was
1180 found in the minimal symbol table
1181 but not in the symtab.
1182 Fall through and return 0 to use the msymbol
1183 definition of "foo_".
1184 (Note that outer code generally follows up a call
1185 to this routine with a call to lookup_minimal_symbol(),
1186 so a 0 return means we'll just flow into that other routine).
1188 This happens for Fortran "foo_" symbols,
1189 which are "foo" in the symtab.
1191 This can also happen if "asm" is used to make a
1192 regular symbol but not a debugging symbol, e.g.
1193 asm(".globl _main");
1197 if (symtab != NULL && sym != NULL)
1200 return fixup_symbol_section (sym, s->objfile);
1202 else if (MSYMBOL_TYPE (msymbol) != mst_text
1203 && MSYMBOL_TYPE (msymbol) != mst_file_text
1204 && !STREQ (name, SYMBOL_NAME (msymbol)))
1206 /* This is a mangled variable, look it up by its
1209 return lookup_symbol_aux (SYMBOL_NAME (msymbol), mangled_name,
1210 NULL, namespace, is_a_field_of_this,
1219 /* Look, in partial_symtab PST, for symbol NAME. Check the global
1220 symbols if GLOBAL, the static symbols if not */
1222 static struct partial_symbol *
1223 lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global,
1224 namespace_enum namespace)
1226 struct partial_symbol *temp;
1227 struct partial_symbol **start, **psym;
1228 struct partial_symbol **top, **bottom, **center;
1229 int length = (global ? pst->n_global_syms : pst->n_static_syms);
1230 int do_linear_search = 1;
1237 pst->objfile->global_psymbols.list + pst->globals_offset :
1238 pst->objfile->static_psymbols.list + pst->statics_offset);
1240 if (global) /* This means we can use a binary search. */
1242 do_linear_search = 0;
1244 /* Binary search. This search is guaranteed to end with center
1245 pointing at the earliest partial symbol with the correct
1246 name. At that point *all* partial symbols with that name
1247 will be checked against the correct namespace. */
1250 top = start + length - 1;
1251 while (top > bottom)
1253 center = bottom + (top - bottom) / 2;
1254 if (!(center < top))
1255 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1256 if (!do_linear_search
1257 && (SYMBOL_LANGUAGE (*center) == language_java))
1259 do_linear_search = 1;
1261 if (strcmp (SYMBOL_SOURCE_NAME (*center), name) >= 0)
1267 bottom = center + 1;
1270 if (!(top == bottom))
1271 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1273 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1274 we don't have to force a linear search on C++. Probably holds true
1275 for JAVA as well, no way to check.*/
1276 while (SYMBOL_MATCHES_NAME (*top,name))
1278 if (SYMBOL_NAMESPACE (*top) == namespace)
1286 /* Can't use a binary search or else we found during the binary search that
1287 we should also do a linear search. */
1289 if (do_linear_search)
1291 for (psym = start; psym < start + length; psym++)
1293 if (namespace == SYMBOL_NAMESPACE (*psym))
1295 if (SYMBOL_MATCHES_NAME (*psym, name))
1306 /* Look up a type named NAME in the struct_namespace. The type returned
1307 must not be opaque -- i.e., must have at least one field defined
1309 This code was modelled on lookup_symbol -- the parts not relevant to looking
1310 up types were just left out. In particular it's assumed here that types
1311 are available in struct_namespace and only at file-static or global blocks. */
1315 lookup_transparent_type (const char *name)
1317 register struct symbol *sym;
1318 register struct symtab *s = NULL;
1319 register struct partial_symtab *ps;
1320 struct blockvector *bv;
1321 register struct objfile *objfile;
1322 register struct block *block;
1324 /* Now search all the global symbols. Do the symtab's first, then
1325 check the psymtab's. If a psymtab indicates the existence
1326 of the desired name as a global, then do psymtab-to-symtab
1327 conversion on the fly and return the found symbol. */
1329 ALL_SYMTABS (objfile, s)
1331 bv = BLOCKVECTOR (s);
1332 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1333 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1334 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1336 return SYMBOL_TYPE (sym);
1340 ALL_PSYMTABS (objfile, ps)
1342 if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE))
1344 s = PSYMTAB_TO_SYMTAB (ps);
1345 bv = BLOCKVECTOR (s);
1346 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1347 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1350 /* This shouldn't be necessary, but as a last resort
1351 * try looking in the statics even though the psymtab
1352 * claimed the symbol was global. It's possible that
1353 * the psymtab gets it wrong in some cases.
1355 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1356 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1358 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1359 %s may be an inlined function, or may be a template function\n\
1360 (if a template, try specifying an instantiation: %s<type>).",
1361 name, ps->filename, name, name);
1363 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1364 return SYMBOL_TYPE (sym);
1368 /* Now search the static file-level symbols.
1369 Not strictly correct, but more useful than an error.
1370 Do the symtab's first, then
1371 check the psymtab's. If a psymtab indicates the existence
1372 of the desired name as a file-level static, then do psymtab-to-symtab
1373 conversion on the fly and return the found symbol.
1376 ALL_SYMTABS (objfile, s)
1378 bv = BLOCKVECTOR (s);
1379 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1380 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1381 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1383 return SYMBOL_TYPE (sym);
1387 ALL_PSYMTABS (objfile, ps)
1389 if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE))
1391 s = PSYMTAB_TO_SYMTAB (ps);
1392 bv = BLOCKVECTOR (s);
1393 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1394 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1397 /* This shouldn't be necessary, but as a last resort
1398 * try looking in the globals even though the psymtab
1399 * claimed the symbol was static. It's possible that
1400 * the psymtab gets it wrong in some cases.
1402 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1403 sym = lookup_block_symbol (block, name, NULL, STRUCT_NAMESPACE);
1405 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1406 %s may be an inlined function, or may be a template function\n\
1407 (if a template, try specifying an instantiation: %s<type>).",
1408 name, ps->filename, name, name);
1410 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1411 return SYMBOL_TYPE (sym);
1414 return (struct type *) 0;
1418 /* Find the psymtab containing main(). */
1419 /* FIXME: What about languages without main() or specially linked
1420 executables that have no main() ? */
1422 struct partial_symtab *
1423 find_main_psymtab (void)
1425 register struct partial_symtab *pst;
1426 register struct objfile *objfile;
1428 ALL_PSYMTABS (objfile, pst)
1430 if (lookup_partial_symbol (pst, main_name (), 1, VAR_NAMESPACE))
1438 /* Search BLOCK for symbol NAME in NAMESPACE.
1440 Note that if NAME is the demangled form of a C++ symbol, we will fail
1441 to find a match during the binary search of the non-encoded names, but
1442 for now we don't worry about the slight inefficiency of looking for
1443 a match we'll never find, since it will go pretty quick. Once the
1444 binary search terminates, we drop through and do a straight linear
1445 search on the symbols. Each symbol which is marked as being a C++
1446 symbol (language_cplus set) has both the encoded and non-encoded names
1449 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1450 particular mangled name.
1454 lookup_block_symbol (register const struct block *block, const char *name,
1455 const char *mangled_name,
1456 const namespace_enum namespace)
1458 register int bot, top, inc;
1459 register struct symbol *sym;
1460 register struct symbol *sym_found = NULL;
1461 register int do_linear_search = 1;
1463 if (BLOCK_HASHTABLE (block))
1465 unsigned int hash_index;
1466 hash_index = msymbol_hash_iw (name);
1467 hash_index = hash_index % BLOCK_BUCKETS (block);
1468 for (sym = BLOCK_BUCKET (block, hash_index); sym; sym = sym->hash_next)
1470 if (SYMBOL_NAMESPACE (sym) == namespace
1472 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1473 : SYMBOL_MATCHES_NAME (sym, name)))
1479 /* If the blocks's symbols were sorted, start with a binary search. */
1481 if (BLOCK_SHOULD_SORT (block))
1483 /* Reset the linear search flag so if the binary search fails, we
1484 won't do the linear search once unless we find some reason to
1487 do_linear_search = 0;
1488 top = BLOCK_NSYMS (block);
1491 /* Advance BOT to not far before the first symbol whose name is NAME. */
1495 inc = (top - bot + 1);
1496 /* No need to keep binary searching for the last few bits worth. */
1501 inc = (inc >> 1) + bot;
1502 sym = BLOCK_SYM (block, inc);
1503 if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java))
1505 do_linear_search = 1;
1507 if (SYMBOL_SOURCE_NAME (sym)[0] < name[0])
1511 else if (SYMBOL_SOURCE_NAME (sym)[0] > name[0])
1515 else if (strcmp (SYMBOL_SOURCE_NAME (sym), name) < 0)
1525 /* Now scan forward until we run out of symbols, find one whose
1526 name is greater than NAME, or find one we want. If there is
1527 more than one symbol with the right name and namespace, we
1528 return the first one; I believe it is now impossible for us
1529 to encounter two symbols with the same name and namespace
1530 here, because blocks containing argument symbols are no
1531 longer sorted. The exception is for C++, where multiple functions
1532 (cloned constructors / destructors, in particular) can have
1533 the same demangled name. So if we have a particular
1534 mangled name to match, try to do so. */
1536 top = BLOCK_NSYMS (block);
1539 sym = BLOCK_SYM (block, bot);
1540 if (SYMBOL_NAMESPACE (sym) == namespace
1542 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1543 : SYMBOL_MATCHES_NAME (sym, name)))
1547 if (SYMBOL_SOURCE_NAME (sym)[0] > name[0])
1555 /* Here if block isn't sorted, or we fail to find a match during the
1556 binary search above. If during the binary search above, we find a
1557 symbol which is a Java symbol, then we have re-enabled the linear
1558 search flag which was reset when starting the binary search.
1560 This loop is equivalent to the loop above, but hacked greatly for speed.
1562 Note that parameter symbols do not always show up last in the
1563 list; this loop makes sure to take anything else other than
1564 parameter symbols first; it only uses parameter symbols as a
1565 last resort. Note that this only takes up extra computation
1568 if (do_linear_search)
1570 top = BLOCK_NSYMS (block);
1574 sym = BLOCK_SYM (block, bot);
1575 if (SYMBOL_NAMESPACE (sym) == namespace
1577 ? strcmp (SYMBOL_NAME (sym), mangled_name) == 0
1578 : SYMBOL_MATCHES_NAME (sym, name)))
1580 /* If SYM has aliases, then use any alias that is active
1581 at the current PC. If no alias is active at the current
1582 PC, then use the main symbol.
1584 ?!? Is checking the current pc correct? Is this routine
1585 ever called to look up a symbol from another context?
1587 FIXME: No, it's not correct. If someone sets a
1588 conditional breakpoint at an address, then the
1589 breakpoint's `struct expression' should refer to the
1590 `struct symbol' appropriate for the breakpoint's
1591 address, which may not be the PC.
1593 Even if it were never called from another context,
1594 it's totally bizarre for lookup_symbol's behavior to
1595 depend on the value of the inferior's current PC. We
1596 should pass in the appropriate PC as well as the
1597 block. The interface to lookup_symbol should change
1598 to require the caller to provide a PC. */
1600 if (SYMBOL_ALIASES (sym))
1601 sym = find_active_alias (sym, read_pc ());
1604 if (SYMBOL_CLASS (sym) != LOC_ARG &&
1605 SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
1606 SYMBOL_CLASS (sym) != LOC_REF_ARG &&
1607 SYMBOL_CLASS (sym) != LOC_REGPARM &&
1608 SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
1609 SYMBOL_CLASS (sym) != LOC_BASEREG_ARG)
1617 return (sym_found); /* Will be NULL if not found. */
1620 /* Given a main symbol SYM and ADDR, search through the alias
1621 list to determine if an alias is active at ADDR and return
1624 If no alias is active, then return SYM. */
1626 static struct symbol *
1627 find_active_alias (struct symbol *sym, CORE_ADDR addr)
1629 struct range_list *r;
1630 struct alias_list *aliases;
1632 /* If we have aliases, check them first. */
1633 aliases = SYMBOL_ALIASES (sym);
1637 if (!SYMBOL_RANGES (aliases->sym))
1638 return aliases->sym;
1639 for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
1641 if (r->start <= addr && r->end > addr)
1642 return aliases->sym;
1644 aliases = aliases->next;
1647 /* Nothing found, return the main symbol. */
1652 /* Return the symbol for the function which contains a specified
1653 lexical block, described by a struct block BL. */
1656 block_function (struct block *bl)
1658 while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
1659 bl = BLOCK_SUPERBLOCK (bl);
1661 return BLOCK_FUNCTION (bl);
1664 /* Find the symtab associated with PC and SECTION. Look through the
1665 psymtabs and read in another symtab if necessary. */
1668 find_pc_sect_symtab (CORE_ADDR pc, asection *section)
1670 register struct block *b;
1671 struct blockvector *bv;
1672 register struct symtab *s = NULL;
1673 register struct symtab *best_s = NULL;
1674 register struct partial_symtab *ps;
1675 register struct objfile *objfile;
1676 CORE_ADDR distance = 0;
1677 struct minimal_symbol *msymbol;
1679 /* If we know that this is not a text address, return failure. This is
1680 necessary because we loop based on the block's high and low code
1681 addresses, which do not include the data ranges, and because
1682 we call find_pc_sect_psymtab which has a similar restriction based
1683 on the partial_symtab's texthigh and textlow. */
1684 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1686 && (msymbol->type == mst_data
1687 || msymbol->type == mst_bss
1688 || msymbol->type == mst_abs
1689 || msymbol->type == mst_file_data
1690 || msymbol->type == mst_file_bss))
1693 /* Search all symtabs for the one whose file contains our address, and which
1694 is the smallest of all the ones containing the address. This is designed
1695 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1696 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1697 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1699 This happens for native ecoff format, where code from included files
1700 gets its own symtab. The symtab for the included file should have
1701 been read in already via the dependency mechanism.
1702 It might be swifter to create several symtabs with the same name
1703 like xcoff does (I'm not sure).
1705 It also happens for objfiles that have their functions reordered.
1706 For these, the symtab we are looking for is not necessarily read in. */
1708 ALL_SYMTABS (objfile, s)
1710 bv = BLOCKVECTOR (s);
1711 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1713 if (BLOCK_START (b) <= pc
1714 && BLOCK_END (b) > pc
1716 || BLOCK_END (b) - BLOCK_START (b) < distance))
1718 /* For an objfile that has its functions reordered,
1719 find_pc_psymtab will find the proper partial symbol table
1720 and we simply return its corresponding symtab. */
1721 /* In order to better support objfiles that contain both
1722 stabs and coff debugging info, we continue on if a psymtab
1724 if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
1726 ps = find_pc_sect_psymtab (pc, section);
1728 return PSYMTAB_TO_SYMTAB (ps);
1733 struct symbol *sym = NULL;
1735 ALL_BLOCK_SYMBOLS (b, i, sym)
1737 fixup_symbol_section (sym, objfile);
1738 if (section == SYMBOL_BFD_SECTION (sym))
1741 if ((i >= BLOCK_BUCKETS (b)) && (sym == NULL))
1742 continue; /* no symbol in this symtab matches section */
1744 distance = BLOCK_END (b) - BLOCK_START (b);
1753 ps = find_pc_sect_psymtab (pc, section);
1757 /* Might want to error() here (in case symtab is corrupt and
1758 will cause a core dump), but maybe we can successfully
1759 continue, so let's not. */
1761 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1763 s = PSYMTAB_TO_SYMTAB (ps);
1768 /* Find the symtab associated with PC. Look through the psymtabs and
1769 read in another symtab if necessary. Backward compatibility, no section */
1772 find_pc_symtab (CORE_ADDR pc)
1774 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1778 /* Find the source file and line number for a given PC value and SECTION.
1779 Return a structure containing a symtab pointer, a line number,
1780 and a pc range for the entire source line.
1781 The value's .pc field is NOT the specified pc.
1782 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1783 use the line that ends there. Otherwise, in that case, the line
1784 that begins there is used. */
1786 /* The big complication here is that a line may start in one file, and end just
1787 before the start of another file. This usually occurs when you #include
1788 code in the middle of a subroutine. To properly find the end of a line's PC
1789 range, we must search all symtabs associated with this compilation unit, and
1790 find the one whose first PC is closer than that of the next line in this
1793 /* If it's worth the effort, we could be using a binary search. */
1795 struct symtab_and_line
1796 find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent)
1799 register struct linetable *l;
1802 register struct linetable_entry *item;
1803 struct symtab_and_line val;
1804 struct blockvector *bv;
1805 struct minimal_symbol *msymbol;
1806 struct minimal_symbol *mfunsym;
1808 /* Info on best line seen so far, and where it starts, and its file. */
1810 struct linetable_entry *best = NULL;
1811 CORE_ADDR best_end = 0;
1812 struct symtab *best_symtab = 0;
1814 /* Store here the first line number
1815 of a file which contains the line at the smallest pc after PC.
1816 If we don't find a line whose range contains PC,
1817 we will use a line one less than this,
1818 with a range from the start of that file to the first line's pc. */
1819 struct linetable_entry *alt = NULL;
1820 struct symtab *alt_symtab = 0;
1822 /* Info on best line seen in this file. */
1824 struct linetable_entry *prev;
1826 /* If this pc is not from the current frame,
1827 it is the address of the end of a call instruction.
1828 Quite likely that is the start of the following statement.
1829 But what we want is the statement containing the instruction.
1830 Fudge the pc to make sure we get that. */
1832 init_sal (&val); /* initialize to zeroes */
1834 /* It's tempting to assume that, if we can't find debugging info for
1835 any function enclosing PC, that we shouldn't search for line
1836 number info, either. However, GAS can emit line number info for
1837 assembly files --- very helpful when debugging hand-written
1838 assembly code. In such a case, we'd have no debug info for the
1839 function, but we would have line info. */
1844 /* elz: added this because this function returned the wrong
1845 information if the pc belongs to a stub (import/export)
1846 to call a shlib function. This stub would be anywhere between
1847 two functions in the target, and the line info was erroneously
1848 taken to be the one of the line before the pc.
1850 /* RT: Further explanation:
1852 * We have stubs (trampolines) inserted between procedures.
1854 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1855 * exists in the main image.
1857 * In the minimal symbol table, we have a bunch of symbols
1858 * sorted by start address. The stubs are marked as "trampoline",
1859 * the others appear as text. E.g.:
1861 * Minimal symbol table for main image
1862 * main: code for main (text symbol)
1863 * shr1: stub (trampoline symbol)
1864 * foo: code for foo (text symbol)
1866 * Minimal symbol table for "shr1" image:
1868 * shr1: code for shr1 (text symbol)
1871 * So the code below is trying to detect if we are in the stub
1872 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1873 * and if found, do the symbolization from the real-code address
1874 * rather than the stub address.
1876 * Assumptions being made about the minimal symbol table:
1877 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1878 * if we're really in the trampoline. If we're beyond it (say
1879 * we're in "foo" in the above example), it'll have a closer
1880 * symbol (the "foo" text symbol for example) and will not
1881 * return the trampoline.
1882 * 2. lookup_minimal_symbol_text() will find a real text symbol
1883 * corresponding to the trampoline, and whose address will
1884 * be different than the trampoline address. I put in a sanity
1885 * check for the address being the same, to avoid an
1886 * infinite recursion.
1888 msymbol = lookup_minimal_symbol_by_pc (pc);
1889 if (msymbol != NULL)
1890 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
1892 mfunsym = lookup_minimal_symbol_text (SYMBOL_NAME (msymbol), NULL, NULL);
1893 if (mfunsym == NULL)
1894 /* I eliminated this warning since it is coming out
1895 * in the following situation:
1896 * gdb shmain // test program with shared libraries
1897 * (gdb) break shr1 // function in shared lib
1898 * Warning: In stub for ...
1899 * In the above situation, the shared lib is not loaded yet,
1900 * so of course we can't find the real func/line info,
1901 * but the "break" still works, and the warning is annoying.
1902 * So I commented out the warning. RT */
1903 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1905 else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol))
1906 /* Avoid infinite recursion */
1907 /* See above comment about why warning is commented out */
1908 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1911 return find_pc_line (SYMBOL_VALUE (mfunsym), 0);
1915 s = find_pc_sect_symtab (pc, section);
1918 /* if no symbol information, return previous pc */
1925 bv = BLOCKVECTOR (s);
1927 /* Look at all the symtabs that share this blockvector.
1928 They all have the same apriori range, that we found was right;
1929 but they have different line tables. */
1931 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
1933 /* Find the best line in this symtab. */
1940 /* I think len can be zero if the symtab lacks line numbers
1941 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1942 I'm not sure which, and maybe it depends on the symbol
1948 item = l->item; /* Get first line info */
1950 /* Is this file's first line closer than the first lines of other files?
1951 If so, record this file, and its first line, as best alternate. */
1952 if (item->pc > pc && (!alt || item->pc < alt->pc))
1958 for (i = 0; i < len; i++, item++)
1960 /* Leave prev pointing to the linetable entry for the last line
1961 that started at or before PC. */
1968 /* At this point, prev points at the line whose start addr is <= pc, and
1969 item points at the next line. If we ran off the end of the linetable
1970 (pc >= start of the last line), then prev == item. If pc < start of
1971 the first line, prev will not be set. */
1973 /* Is this file's best line closer than the best in the other files?
1974 If so, record this file, and its best line, as best so far. */
1976 if (prev && (!best || prev->pc > best->pc))
1981 /* Discard BEST_END if it's before the PC of the current BEST. */
1982 if (best_end <= best->pc)
1986 /* If another line (denoted by ITEM) is in the linetable and its
1987 PC is after BEST's PC, but before the current BEST_END, then
1988 use ITEM's PC as the new best_end. */
1989 if (best && i < len && item->pc > best->pc
1990 && (best_end == 0 || best_end > item->pc))
1991 best_end = item->pc;
1997 { /* If we didn't find any line # info, just
2003 val.symtab = alt_symtab;
2004 val.line = alt->line - 1;
2006 /* Don't return line 0, that means that we didn't find the line. */
2010 val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2014 else if (best->line == 0)
2016 /* If our best fit is in a range of PC's for which no line
2017 number info is available (line number is zero) then we didn't
2018 find any valid line information. */
2023 val.symtab = best_symtab;
2024 val.line = best->line;
2026 if (best_end && (!alt || best_end < alt->pc))
2031 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2033 val.section = section;
2037 /* Backward compatibility (no section) */
2039 struct symtab_and_line
2040 find_pc_line (CORE_ADDR pc, int notcurrent)
2044 section = find_pc_overlay (pc);
2045 if (pc_in_unmapped_range (pc, section))
2046 pc = overlay_mapped_address (pc, section);
2047 return find_pc_sect_line (pc, section, notcurrent);
2050 /* Find line number LINE in any symtab whose name is the same as
2053 If found, return the symtab that contains the linetable in which it was
2054 found, set *INDEX to the index in the linetable of the best entry
2055 found, and set *EXACT_MATCH nonzero if the value returned is an
2058 If not found, return NULL. */
2061 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2065 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2069 struct linetable *best_linetable;
2070 struct symtab *best_symtab;
2072 /* First try looking it up in the given symtab. */
2073 best_linetable = LINETABLE (symtab);
2074 best_symtab = symtab;
2075 best_index = find_line_common (best_linetable, line, &exact);
2076 if (best_index < 0 || !exact)
2078 /* Didn't find an exact match. So we better keep looking for
2079 another symtab with the same name. In the case of xcoff,
2080 multiple csects for one source file (produced by IBM's FORTRAN
2081 compiler) produce multiple symtabs (this is unavoidable
2082 assuming csects can be at arbitrary places in memory and that
2083 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2085 /* BEST is the smallest linenumber > LINE so far seen,
2086 or 0 if none has been seen so far.
2087 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2090 struct objfile *objfile;
2093 if (best_index >= 0)
2094 best = best_linetable->item[best_index].line;
2098 ALL_SYMTABS (objfile, s)
2100 struct linetable *l;
2103 if (!STREQ (symtab->filename, s->filename))
2106 ind = find_line_common (l, line, &exact);
2116 if (best == 0 || l->item[ind].line < best)
2118 best = l->item[ind].line;
2131 *index = best_index;
2133 *exact_match = exact;
2138 /* Set the PC value for a given source file and line number and return true.
2139 Returns zero for invalid line number (and sets the PC to 0).
2140 The source file is specified with a struct symtab. */
2143 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2145 struct linetable *l;
2152 symtab = find_line_symtab (symtab, line, &ind, NULL);
2155 l = LINETABLE (symtab);
2156 *pc = l->item[ind].pc;
2163 /* Find the range of pc values in a line.
2164 Store the starting pc of the line into *STARTPTR
2165 and the ending pc (start of next line) into *ENDPTR.
2166 Returns 1 to indicate success.
2167 Returns 0 if could not find the specified line. */
2170 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2173 CORE_ADDR startaddr;
2174 struct symtab_and_line found_sal;
2177 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2180 /* This whole function is based on address. For example, if line 10 has
2181 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2182 "info line *0x123" should say the line goes from 0x100 to 0x200
2183 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2184 This also insures that we never give a range like "starts at 0x134
2185 and ends at 0x12c". */
2187 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2188 if (found_sal.line != sal.line)
2190 /* The specified line (sal) has zero bytes. */
2191 *startptr = found_sal.pc;
2192 *endptr = found_sal.pc;
2196 *startptr = found_sal.pc;
2197 *endptr = found_sal.end;
2202 /* Given a line table and a line number, return the index into the line
2203 table for the pc of the nearest line whose number is >= the specified one.
2204 Return -1 if none is found. The value is >= 0 if it is an index.
2206 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2209 find_line_common (register struct linetable *l, register int lineno,
2215 /* BEST is the smallest linenumber > LINENO so far seen,
2216 or 0 if none has been seen so far.
2217 BEST_INDEX identifies the item for it. */
2219 int best_index = -1;
2228 for (i = 0; i < len; i++)
2230 register struct linetable_entry *item = &(l->item[i]);
2232 if (item->line == lineno)
2234 /* Return the first (lowest address) entry which matches. */
2239 if (item->line > lineno && (best == 0 || item->line < best))
2246 /* If we got here, we didn't get an exact match. */
2253 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2255 struct symtab_and_line sal;
2256 sal = find_pc_line (pc, 0);
2259 return sal.symtab != 0;
2262 /* Given a function symbol SYM, find the symtab and line for the start
2264 If the argument FUNFIRSTLINE is nonzero, we want the first line
2265 of real code inside the function. */
2267 struct symtab_and_line
2268 find_function_start_sal (struct symbol *sym, int funfirstline)
2271 struct symtab_and_line sal;
2273 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2274 fixup_symbol_section (sym, NULL);
2276 { /* skip "first line" of function (which is actually its prologue) */
2277 asection *section = SYMBOL_BFD_SECTION (sym);
2278 /* If function is in an unmapped overlay, use its unmapped LMA
2279 address, so that SKIP_PROLOGUE has something unique to work on */
2280 if (section_is_overlay (section) &&
2281 !section_is_mapped (section))
2282 pc = overlay_unmapped_address (pc, section);
2284 pc += FUNCTION_START_OFFSET;
2285 pc = SKIP_PROLOGUE (pc);
2287 /* For overlays, map pc back into its mapped VMA range */
2288 pc = overlay_mapped_address (pc, section);
2290 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2292 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2293 /* Convex: no need to suppress code on first line, if any */
2296 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2297 line is still part of the same function. */
2299 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
2300 && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2302 /* First pc of next line */
2304 /* Recalculate the line number (might not be N+1). */
2305 sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
2313 /* If P is of the form "operator[ \t]+..." where `...' is
2314 some legitimate operator text, return a pointer to the
2315 beginning of the substring of the operator text.
2316 Otherwise, return "". */
2318 operator_chars (char *p, char **end)
2321 if (strncmp (p, "operator", 8))
2325 /* Don't get faked out by `operator' being part of a longer
2327 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2330 /* Allow some whitespace between `operator' and the operator symbol. */
2331 while (*p == ' ' || *p == '\t')
2334 /* Recognize 'operator TYPENAME'. */
2336 if (isalpha (*p) || *p == '_' || *p == '$')
2338 register char *q = p + 1;
2339 while (isalnum (*q) || *q == '_' || *q == '$')
2348 case '\\': /* regexp quoting */
2351 if (p[2] == '=') /* 'operator\*=' */
2353 else /* 'operator\*' */
2357 else if (p[1] == '[')
2360 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2361 else if (p[2] == '\\' && p[3] == ']')
2363 *end = p + 4; /* 'operator\[\]' */
2367 error ("nothing is allowed between '[' and ']'");
2371 /* Gratuitous qoute: skip it and move on. */
2393 if (p[0] == '-' && p[1] == '>')
2395 /* Struct pointer member operator 'operator->'. */
2398 *end = p + 3; /* 'operator->*' */
2401 else if (p[2] == '\\')
2403 *end = p + 4; /* Hopefully 'operator->\*' */
2408 *end = p + 2; /* 'operator->' */
2412 if (p[1] == '=' || p[1] == p[0])
2423 error ("`operator ()' must be specified without whitespace in `()'");
2428 error ("`operator ?:' must be specified without whitespace in `?:'");
2433 error ("`operator []' must be specified without whitespace in `[]'");
2437 error ("`operator %s' not supported", p);
2446 /* If FILE is not already in the table of files, return zero;
2447 otherwise return non-zero. Optionally add FILE to the table if ADD
2448 is non-zero. If *FIRST is non-zero, forget the old table
2451 filename_seen (const char *file, int add, int *first)
2453 /* Table of files seen so far. */
2454 static const char **tab = NULL;
2455 /* Allocated size of tab in elements.
2456 Start with one 256-byte block (when using GNU malloc.c).
2457 24 is the malloc overhead when range checking is in effect. */
2458 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2459 /* Current size of tab in elements. */
2460 static int tab_cur_size;
2466 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2470 /* Is FILE in tab? */
2471 for (p = tab; p < tab + tab_cur_size; p++)
2472 if (strcmp (*p, file) == 0)
2475 /* No; maybe add it to tab. */
2478 if (tab_cur_size == tab_alloc_size)
2480 tab_alloc_size *= 2;
2481 tab = (const char **) xrealloc ((char *) tab,
2482 tab_alloc_size * sizeof (*tab));
2484 tab[tab_cur_size++] = file;
2490 /* Slave routine for sources_info. Force line breaks at ,'s.
2491 NAME is the name to print and *FIRST is nonzero if this is the first
2492 name printed. Set *FIRST to zero. */
2494 output_source_filename (char *name, int *first)
2496 /* Since a single source file can result in several partial symbol
2497 tables, we need to avoid printing it more than once. Note: if
2498 some of the psymtabs are read in and some are not, it gets
2499 printed both under "Source files for which symbols have been
2500 read" and "Source files for which symbols will be read in on
2501 demand". I consider this a reasonable way to deal with the
2502 situation. I'm not sure whether this can also happen for
2503 symtabs; it doesn't hurt to check. */
2505 /* Was NAME already seen? */
2506 if (filename_seen (name, 1, first))
2508 /* Yes; don't print it again. */
2511 /* No; print it and reset *FIRST. */
2518 printf_filtered (", ");
2522 fputs_filtered (name, gdb_stdout);
2526 sources_info (char *ignore, int from_tty)
2528 register struct symtab *s;
2529 register struct partial_symtab *ps;
2530 register struct objfile *objfile;
2533 if (!have_full_symbols () && !have_partial_symbols ())
2535 error ("No symbol table is loaded. Use the \"file\" command.");
2538 printf_filtered ("Source files for which symbols have been read in:\n\n");
2541 ALL_SYMTABS (objfile, s)
2543 output_source_filename (s->filename, &first);
2545 printf_filtered ("\n\n");
2547 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2550 ALL_PSYMTABS (objfile, ps)
2554 output_source_filename (ps->filename, &first);
2557 printf_filtered ("\n");
2561 file_matches (char *file, char *files[], int nfiles)
2565 if (file != NULL && nfiles != 0)
2567 for (i = 0; i < nfiles; i++)
2569 if (strcmp (files[i], lbasename (file)) == 0)
2573 else if (nfiles == 0)
2578 /* Free any memory associated with a search. */
2580 free_search_symbols (struct symbol_search *symbols)
2582 struct symbol_search *p;
2583 struct symbol_search *next;
2585 for (p = symbols; p != NULL; p = next)
2593 do_free_search_symbols_cleanup (void *symbols)
2595 free_search_symbols (symbols);
2599 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2601 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2604 /* Helper function for sort_search_symbols and qsort. Can only
2605 sort symbols, not minimal symbols. */
2607 compare_search_syms (const void *sa, const void *sb)
2609 struct symbol_search **sym_a = (struct symbol_search **) sa;
2610 struct symbol_search **sym_b = (struct symbol_search **) sb;
2612 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a)->symbol),
2613 SYMBOL_SOURCE_NAME ((*sym_b)->symbol));
2616 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2617 prevtail where it is, but update its next pointer to point to
2618 the first of the sorted symbols. */
2619 static struct symbol_search *
2620 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2622 struct symbol_search **symbols, *symp, *old_next;
2625 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2627 symp = prevtail->next;
2628 for (i = 0; i < nfound; i++)
2633 /* Generally NULL. */
2636 qsort (symbols, nfound, sizeof (struct symbol_search *),
2637 compare_search_syms);
2640 for (i = 0; i < nfound; i++)
2642 symp->next = symbols[i];
2645 symp->next = old_next;
2651 /* Search the symbol table for matches to the regular expression REGEXP,
2652 returning the results in *MATCHES.
2654 Only symbols of KIND are searched:
2655 FUNCTIONS_NAMESPACE - search all functions
2656 TYPES_NAMESPACE - search all type names
2657 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2658 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2659 and constants (enums)
2661 free_search_symbols should be called when *MATCHES is no longer needed.
2663 The results are sorted locally; each symtab's global and static blocks are
2664 separately alphabetized.
2667 search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[],
2668 struct symbol_search **matches)
2670 register struct symtab *s;
2671 register struct partial_symtab *ps;
2672 register struct blockvector *bv;
2673 struct blockvector *prev_bv = 0;
2674 register struct block *b;
2677 register struct symbol *sym;
2678 struct partial_symbol **psym;
2679 struct objfile *objfile;
2680 struct minimal_symbol *msymbol;
2683 static enum minimal_symbol_type types[]
2685 {mst_data, mst_text, mst_abs, mst_unknown};
2686 static enum minimal_symbol_type types2[]
2688 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2689 static enum minimal_symbol_type types3[]
2691 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2692 static enum minimal_symbol_type types4[]
2694 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2695 enum minimal_symbol_type ourtype;
2696 enum minimal_symbol_type ourtype2;
2697 enum minimal_symbol_type ourtype3;
2698 enum minimal_symbol_type ourtype4;
2699 struct symbol_search *sr;
2700 struct symbol_search *psr;
2701 struct symbol_search *tail;
2702 struct cleanup *old_chain = NULL;
2704 if (kind < VARIABLES_NAMESPACE)
2705 error ("must search on specific namespace");
2707 ourtype = types[(int) (kind - VARIABLES_NAMESPACE)];
2708 ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)];
2709 ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)];
2710 ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)];
2712 sr = *matches = NULL;
2717 /* Make sure spacing is right for C++ operators.
2718 This is just a courtesy to make the matching less sensitive
2719 to how many spaces the user leaves between 'operator'
2720 and <TYPENAME> or <OPERATOR>. */
2722 char *opname = operator_chars (regexp, &opend);
2725 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2726 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2728 /* There should 1 space between 'operator' and 'TYPENAME'. */
2729 if (opname[-1] != ' ' || opname[-2] == ' ')
2734 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2735 if (opname[-1] == ' ')
2738 /* If wrong number of spaces, fix it. */
2741 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2742 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2747 if (0 != (val = re_comp (regexp)))
2748 error ("Invalid regexp (%s): %s", val, regexp);
2751 /* Search through the partial symtabs *first* for all symbols
2752 matching the regexp. That way we don't have to reproduce all of
2753 the machinery below. */
2755 ALL_PSYMTABS (objfile, ps)
2757 struct partial_symbol **bound, **gbound, **sbound;
2763 gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
2764 sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
2767 /* Go through all of the symbols stored in a partial
2768 symtab in one loop. */
2769 psym = objfile->global_psymbols.list + ps->globals_offset;
2774 if (bound == gbound && ps->n_static_syms != 0)
2776 psym = objfile->static_psymbols.list + ps->statics_offset;
2787 /* If it would match (logic taken from loop below)
2788 load the file and go on to the next one */
2789 if (file_matches (ps->filename, files, nfiles)
2790 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym))
2791 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
2792 && SYMBOL_CLASS (*psym) != LOC_BLOCK)
2793 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)
2794 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
2795 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
2797 PSYMTAB_TO_SYMTAB (ps);
2805 /* Here, we search through the minimal symbol tables for functions
2806 and variables that match, and force their symbols to be read.
2807 This is in particular necessary for demangled variable names,
2808 which are no longer put into the partial symbol tables.
2809 The symbol will then be found during the scan of symtabs below.
2811 For functions, find_pc_symtab should succeed if we have debug info
2812 for the function, for variables we have to call lookup_symbol
2813 to determine if the variable has debug info.
2814 If the lookup fails, set found_misc so that we will rescan to print
2815 any matching symbols without debug info.
2818 if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE))
2820 ALL_MSYMBOLS (objfile, msymbol)
2822 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2823 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2824 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2825 MSYMBOL_TYPE (msymbol) == ourtype4)
2827 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2829 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2831 if (kind == FUNCTIONS_NAMESPACE
2832 || lookup_symbol (SYMBOL_NAME (msymbol),
2833 (struct block *) NULL,
2835 0, (struct symtab **) NULL) == NULL)
2843 ALL_SYMTABS (objfile, s)
2845 bv = BLOCKVECTOR (s);
2846 /* Often many files share a blockvector.
2847 Scan each blockvector only once so that
2848 we don't get every symbol many times.
2849 It happens that the first symtab in the list
2850 for any given blockvector is the main file. */
2852 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
2854 struct symbol_search *prevtail = tail;
2856 b = BLOCKVECTOR_BLOCK (bv, i);
2857 ALL_BLOCK_SYMBOLS (b, j, sym)
2860 if (file_matches (s->filename, files, nfiles)
2861 && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
2862 && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
2863 && SYMBOL_CLASS (sym) != LOC_BLOCK
2864 && SYMBOL_CLASS (sym) != LOC_CONST)
2865 || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)
2866 || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
2867 || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK))))
2870 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2874 psr->msymbol = NULL;
2886 if (prevtail == NULL)
2888 struct symbol_search dummy;
2891 tail = sort_search_symbols (&dummy, nfound);
2894 old_chain = make_cleanup_free_search_symbols (sr);
2897 tail = sort_search_symbols (prevtail, nfound);
2903 /* If there are no eyes, avoid all contact. I mean, if there are
2904 no debug symbols, then print directly from the msymbol_vector. */
2906 if (found_misc || kind != FUNCTIONS_NAMESPACE)
2908 ALL_MSYMBOLS (objfile, msymbol)
2910 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2911 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2912 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2913 MSYMBOL_TYPE (msymbol) == ourtype4)
2915 if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
2917 /* Functions: Look up by address. */
2918 if (kind != FUNCTIONS_NAMESPACE ||
2919 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
2921 /* Variables/Absolutes: Look up by name */
2922 if (lookup_symbol (SYMBOL_NAME (msymbol),
2923 (struct block *) NULL, VAR_NAMESPACE,
2924 0, (struct symtab **) NULL) == NULL)
2927 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
2929 psr->msymbol = msymbol;
2936 old_chain = make_cleanup_free_search_symbols (sr);
2950 discard_cleanups (old_chain);
2953 /* Helper function for symtab_symbol_info, this function uses
2954 the data returned from search_symbols() to print information
2955 regarding the match to gdb_stdout.
2958 print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym,
2959 int block, char *last)
2961 if (last == NULL || strcmp (last, s->filename) != 0)
2963 fputs_filtered ("\nFile ", gdb_stdout);
2964 fputs_filtered (s->filename, gdb_stdout);
2965 fputs_filtered (":\n", gdb_stdout);
2968 if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK)
2969 printf_filtered ("static ");
2971 /* Typedef that is not a C++ class */
2972 if (kind == TYPES_NAMESPACE
2973 && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
2974 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
2975 /* variable, func, or typedef-that-is-c++-class */
2976 else if (kind < TYPES_NAMESPACE ||
2977 (kind == TYPES_NAMESPACE &&
2978 SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE))
2980 type_print (SYMBOL_TYPE (sym),
2981 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
2982 ? "" : SYMBOL_SOURCE_NAME (sym)),
2985 printf_filtered (";\n");
2989 /* This help function for symtab_symbol_info() prints information
2990 for non-debugging symbols to gdb_stdout.
2993 print_msymbol_info (struct minimal_symbol *msymbol)
2997 if (TARGET_ADDR_BIT <= 32)
2998 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
2999 & (CORE_ADDR) 0xffffffff,
3002 tmp = local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3004 printf_filtered ("%s %s\n",
3005 tmp, SYMBOL_SOURCE_NAME (msymbol));
3008 /* This is the guts of the commands "info functions", "info types", and
3009 "info variables". It calls search_symbols to find all matches and then
3010 print_[m]symbol_info to print out some useful information about the
3014 symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty)
3016 static char *classnames[]
3018 {"variable", "function", "type", "method"};
3019 struct symbol_search *symbols;
3020 struct symbol_search *p;
3021 struct cleanup *old_chain;
3022 char *last_filename = NULL;
3025 /* must make sure that if we're interrupted, symbols gets freed */
3026 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3027 old_chain = make_cleanup_free_search_symbols (symbols);
3029 printf_filtered (regexp
3030 ? "All %ss matching regular expression \"%s\":\n"
3031 : "All defined %ss:\n",
3032 classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp);
3034 for (p = symbols; p != NULL; p = p->next)
3038 if (p->msymbol != NULL)
3042 printf_filtered ("\nNon-debugging symbols:\n");
3045 print_msymbol_info (p->msymbol);
3049 print_symbol_info (kind,
3054 last_filename = p->symtab->filename;
3058 do_cleanups (old_chain);
3062 variables_info (char *regexp, int from_tty)
3064 symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty);
3068 functions_info (char *regexp, int from_tty)
3070 symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty);
3075 types_info (char *regexp, int from_tty)
3077 symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty);
3080 /* Breakpoint all functions matching regular expression. */
3083 rbreak_command_wrapper (char *regexp, int from_tty)
3085 rbreak_command (regexp, from_tty);
3089 rbreak_command (char *regexp, int from_tty)
3091 struct symbol_search *ss;
3092 struct symbol_search *p;
3093 struct cleanup *old_chain;
3095 search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss);
3096 old_chain = make_cleanup_free_search_symbols (ss);
3098 for (p = ss; p != NULL; p = p->next)
3100 if (p->msymbol == NULL)
3102 char *string = (char *) alloca (strlen (p->symtab->filename)
3103 + strlen (SYMBOL_NAME (p->symbol))
3105 strcpy (string, p->symtab->filename);
3106 strcat (string, ":'");
3107 strcat (string, SYMBOL_NAME (p->symbol));
3108 strcat (string, "'");
3109 break_command (string, from_tty);
3110 print_symbol_info (FUNCTIONS_NAMESPACE,
3114 p->symtab->filename);
3118 break_command (SYMBOL_NAME (p->msymbol), from_tty);
3119 printf_filtered ("<function, no debug info> %s;\n",
3120 SYMBOL_SOURCE_NAME (p->msymbol));
3124 do_cleanups (old_chain);
3128 /* Return Nonzero if block a is lexically nested within block b,
3129 or if a and b have the same pc range.
3130 Return zero otherwise. */
3132 contained_in (struct block *a, struct block *b)
3136 return BLOCK_START (a) >= BLOCK_START (b)
3137 && BLOCK_END (a) <= BLOCK_END (b);
3141 /* Helper routine for make_symbol_completion_list. */
3143 static int return_val_size;
3144 static int return_val_index;
3145 static char **return_val;
3147 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3149 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3150 /* Put only the mangled name on the list. */ \
3151 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3152 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3153 completion_list_add_name \
3154 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3156 completion_list_add_name \
3157 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3160 /* Test to see if the symbol specified by SYMNAME (which is already
3161 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3162 characters. If so, add it to the current completion list. */
3165 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3166 char *text, char *word)
3171 /* clip symbols that cannot match */
3173 if (strncmp (symname, sym_text, sym_text_len) != 0)
3178 /* We have a match for a completion, so add SYMNAME to the current list
3179 of matches. Note that the name is moved to freshly malloc'd space. */
3183 if (word == sym_text)
3185 new = xmalloc (strlen (symname) + 5);
3186 strcpy (new, symname);
3188 else if (word > sym_text)
3190 /* Return some portion of symname. */
3191 new = xmalloc (strlen (symname) + 5);
3192 strcpy (new, symname + (word - sym_text));
3196 /* Return some of SYM_TEXT plus symname. */
3197 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3198 strncpy (new, word, sym_text - word);
3199 new[sym_text - word] = '\0';
3200 strcat (new, symname);
3203 if (return_val_index + 3 > return_val_size)
3205 newsize = (return_val_size *= 2) * sizeof (char *);
3206 return_val = (char **) xrealloc ((char *) return_val, newsize);
3208 return_val[return_val_index++] = new;
3209 return_val[return_val_index] = NULL;
3213 /* Return a NULL terminated array of all symbols (regardless of class)
3214 which begin by matching TEXT. If the answer is no symbols, then
3215 the return value is an array which contains only a NULL pointer.
3217 Problem: All of the symbols have to be copied because readline frees them.
3218 I'm not going to worry about this; hopefully there won't be that many. */
3221 make_symbol_completion_list (char *text, char *word)
3223 register struct symbol *sym;
3224 register struct symtab *s;
3225 register struct partial_symtab *ps;
3226 register struct minimal_symbol *msymbol;
3227 register struct objfile *objfile;
3228 register struct block *b, *surrounding_static_block = 0;
3230 struct partial_symbol **psym;
3231 /* The symbol we are completing on. Points in same buffer as text. */
3233 /* Length of sym_text. */
3236 /* Now look for the symbol we are supposed to complete on.
3237 FIXME: This should be language-specific. */
3241 char *quote_pos = NULL;
3243 /* First see if this is a quoted string. */
3245 for (p = text; *p != '\0'; ++p)
3247 if (quote_found != '\0')
3249 if (*p == quote_found)
3250 /* Found close quote. */
3252 else if (*p == '\\' && p[1] == quote_found)
3253 /* A backslash followed by the quote character
3254 doesn't end the string. */
3257 else if (*p == '\'' || *p == '"')
3263 if (quote_found == '\'')
3264 /* A string within single quotes can be a symbol, so complete on it. */
3265 sym_text = quote_pos + 1;
3266 else if (quote_found == '"')
3267 /* A double-quoted string is never a symbol, nor does it make sense
3268 to complete it any other way. */
3270 return_val = (char **) xmalloc (sizeof (char *));
3271 return_val[0] = NULL;
3276 /* It is not a quoted string. Break it based on the characters
3277 which are in symbols. */
3280 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3289 sym_text_len = strlen (sym_text);
3291 return_val_size = 100;
3292 return_val_index = 0;
3293 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3294 return_val[0] = NULL;
3296 /* Look through the partial symtabs for all symbols which begin
3297 by matching SYM_TEXT. Add each one that you find to the list. */
3299 ALL_PSYMTABS (objfile, ps)
3301 /* If the psymtab's been read in we'll get it when we search
3302 through the blockvector. */
3306 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3307 psym < (objfile->global_psymbols.list + ps->globals_offset
3308 + ps->n_global_syms);
3311 /* If interrupted, then quit. */
3313 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3316 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3317 psym < (objfile->static_psymbols.list + ps->statics_offset
3318 + ps->n_static_syms);
3322 COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
3326 /* At this point scan through the misc symbol vectors and add each
3327 symbol you find to the list. Eventually we want to ignore
3328 anything that isn't a text symbol (everything else will be
3329 handled by the psymtab code above). */
3331 ALL_MSYMBOLS (objfile, msymbol)
3334 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3337 /* Search upwards from currently selected frame (so that we can
3338 complete on local vars. */
3340 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3342 if (!BLOCK_SUPERBLOCK (b))
3344 surrounding_static_block = b; /* For elmin of dups */
3347 /* Also catch fields of types defined in this places which match our
3348 text string. Only complete on types visible from current context. */
3350 ALL_BLOCK_SYMBOLS (b, i, sym)
3352 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3353 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3355 struct type *t = SYMBOL_TYPE (sym);
3356 enum type_code c = TYPE_CODE (t);
3358 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3360 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3362 if (TYPE_FIELD_NAME (t, j))
3364 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3365 sym_text, sym_text_len, text, word);
3373 /* Go through the symtabs and check the externs and statics for
3374 symbols which match. */
3376 ALL_SYMTABS (objfile, s)
3379 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3380 ALL_BLOCK_SYMBOLS (b, i, sym)
3382 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3386 ALL_SYMTABS (objfile, s)
3389 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3390 /* Don't do this block twice. */
3391 if (b == surrounding_static_block)
3393 ALL_BLOCK_SYMBOLS (b, i, sym)
3395 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3399 return (return_val);
3402 /* Like make_symbol_completion_list, but returns a list of symbols
3403 defined in a source file FILE. */
3406 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3408 register struct symbol *sym;
3409 register struct symtab *s;
3410 register struct block *b;
3412 /* The symbol we are completing on. Points in same buffer as text. */
3414 /* Length of sym_text. */
3417 /* Now look for the symbol we are supposed to complete on.
3418 FIXME: This should be language-specific. */
3422 char *quote_pos = NULL;
3424 /* First see if this is a quoted string. */
3426 for (p = text; *p != '\0'; ++p)
3428 if (quote_found != '\0')
3430 if (*p == quote_found)
3431 /* Found close quote. */
3433 else if (*p == '\\' && p[1] == quote_found)
3434 /* A backslash followed by the quote character
3435 doesn't end the string. */
3438 else if (*p == '\'' || *p == '"')
3444 if (quote_found == '\'')
3445 /* A string within single quotes can be a symbol, so complete on it. */
3446 sym_text = quote_pos + 1;
3447 else if (quote_found == '"')
3448 /* A double-quoted string is never a symbol, nor does it make sense
3449 to complete it any other way. */
3451 return_val = (char **) xmalloc (sizeof (char *));
3452 return_val[0] = NULL;
3457 /* It is not a quoted string. Break it based on the characters
3458 which are in symbols. */
3461 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3470 sym_text_len = strlen (sym_text);
3472 return_val_size = 10;
3473 return_val_index = 0;
3474 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3475 return_val[0] = NULL;
3477 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3479 s = lookup_symtab (srcfile);
3482 /* Maybe they typed the file with leading directories, while the
3483 symbol tables record only its basename. */
3484 const char *tail = lbasename (srcfile);
3487 s = lookup_symtab (tail);
3490 /* If we have no symtab for that file, return an empty list. */
3492 return (return_val);
3494 /* Go through this symtab and check the externs and statics for
3495 symbols which match. */
3497 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3498 ALL_BLOCK_SYMBOLS (b, i, sym)
3500 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3503 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3504 ALL_BLOCK_SYMBOLS (b, i, sym)
3506 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3509 return (return_val);
3512 /* A helper function for make_source_files_completion_list. It adds
3513 another file name to a list of possible completions, growing the
3514 list as necessary. */
3517 add_filename_to_list (const char *fname, char *text, char *word,
3518 char ***list, int *list_used, int *list_alloced)
3521 size_t fnlen = strlen (fname);
3523 if (*list_used + 1 >= *list_alloced)
3526 *list = (char **) xrealloc ((char *) *list,
3527 *list_alloced * sizeof (char *));
3532 /* Return exactly fname. */
3533 new = xmalloc (fnlen + 5);
3534 strcpy (new, fname);
3536 else if (word > text)
3538 /* Return some portion of fname. */
3539 new = xmalloc (fnlen + 5);
3540 strcpy (new, fname + (word - text));
3544 /* Return some of TEXT plus fname. */
3545 new = xmalloc (fnlen + (text - word) + 5);
3546 strncpy (new, word, text - word);
3547 new[text - word] = '\0';
3548 strcat (new, fname);
3550 (*list)[*list_used] = new;
3551 (*list)[++*list_used] = NULL;
3555 not_interesting_fname (const char *fname)
3557 static const char *illegal_aliens[] = {
3558 "_globals_", /* inserted by coff_symtab_read */
3563 for (i = 0; illegal_aliens[i]; i++)
3565 if (strcmp (fname, illegal_aliens[i]) == 0)
3571 /* Return a NULL terminated array of all source files whose names
3572 begin with matching TEXT. The file names are looked up in the
3573 symbol tables of this program. If the answer is no matchess, then
3574 the return value is an array which contains only a NULL pointer. */
3577 make_source_files_completion_list (char *text, char *word)
3579 register struct symtab *s;
3580 register struct partial_symtab *ps;
3581 register struct objfile *objfile;
3583 int list_alloced = 1;
3585 size_t text_len = strlen (text);
3586 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3587 const char *base_name;
3591 if (!have_full_symbols () && !have_partial_symbols ())
3594 ALL_SYMTABS (objfile, s)
3596 if (not_interesting_fname (s->filename))
3598 if (!filename_seen (s->filename, 1, &first)
3599 #if HAVE_DOS_BASED_FILE_SYSTEM
3600 && strncasecmp (s->filename, text, text_len) == 0
3602 && strncmp (s->filename, text, text_len) == 0
3606 /* This file matches for a completion; add it to the current
3608 add_filename_to_list (s->filename, text, word,
3609 &list, &list_used, &list_alloced);
3613 /* NOTE: We allow the user to type a base name when the
3614 debug info records leading directories, but not the other
3615 way around. This is what subroutines of breakpoint
3616 command do when they parse file names. */
3617 base_name = lbasename (s->filename);
3618 if (base_name != s->filename
3619 && !filename_seen (base_name, 1, &first)
3620 #if HAVE_DOS_BASED_FILE_SYSTEM
3621 && strncasecmp (base_name, text, text_len) == 0
3623 && strncmp (base_name, text, text_len) == 0
3626 add_filename_to_list (base_name, text, word,
3627 &list, &list_used, &list_alloced);
3631 ALL_PSYMTABS (objfile, ps)
3633 if (not_interesting_fname (ps->filename))
3637 if (!filename_seen (ps->filename, 1, &first)
3638 #if HAVE_DOS_BASED_FILE_SYSTEM
3639 && strncasecmp (ps->filename, text, text_len) == 0
3641 && strncmp (ps->filename, text, text_len) == 0
3645 /* This file matches for a completion; add it to the
3646 current list of matches. */
3647 add_filename_to_list (ps->filename, text, word,
3648 &list, &list_used, &list_alloced);
3653 base_name = lbasename (ps->filename);
3654 if (base_name != ps->filename
3655 && !filename_seen (base_name, 1, &first)
3656 #if HAVE_DOS_BASED_FILE_SYSTEM
3657 && strncasecmp (base_name, text, text_len) == 0
3659 && strncmp (base_name, text, text_len) == 0
3662 add_filename_to_list (base_name, text, word,
3663 &list, &list_used, &list_alloced);
3671 /* Determine if PC is in the prologue of a function. The prologue is the area
3672 between the first instruction of a function, and the first executable line.
3673 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3675 If non-zero, func_start is where we think the prologue starts, possibly
3676 by previous examination of symbol table information.
3680 in_prologue (CORE_ADDR pc, CORE_ADDR func_start)
3682 struct symtab_and_line sal;
3683 CORE_ADDR func_addr, func_end;
3685 /* We have several sources of information we can consult to figure
3687 - Compilers usually emit line number info that marks the prologue
3688 as its own "source line". So the ending address of that "line"
3689 is the end of the prologue. If available, this is the most
3691 - The minimal symbols and partial symbols, which can usually tell
3692 us the starting and ending addresses of a function.
3693 - If we know the function's start address, we can call the
3694 architecture-defined SKIP_PROLOGUE function to analyze the
3695 instruction stream and guess where the prologue ends.
3696 - Our `func_start' argument; if non-zero, this is the caller's
3697 best guess as to the function's entry point. At the time of
3698 this writing, handle_inferior_event doesn't get this right, so
3699 it should be our last resort. */
3701 /* Consult the partial symbol table, to find which function
3703 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
3705 CORE_ADDR prologue_end;
3707 /* We don't even have minsym information, so fall back to using
3708 func_start, if given. */
3710 return 1; /* We *might* be in a prologue. */
3712 prologue_end = SKIP_PROLOGUE (func_start);
3714 return func_start <= pc && pc < prologue_end;
3717 /* If we have line number information for the function, that's
3718 usually pretty reliable. */
3719 sal = find_pc_line (func_addr, 0);
3721 /* Now sal describes the source line at the function's entry point,
3722 which (by convention) is the prologue. The end of that "line",
3723 sal.end, is the end of the prologue.
3725 Note that, for functions whose source code is all on a single
3726 line, the line number information doesn't always end up this way.
3727 So we must verify that our purported end-of-prologue address is
3728 *within* the function, not at its start or end. */
3730 || sal.end <= func_addr
3731 || func_end <= sal.end)
3733 /* We don't have any good line number info, so use the minsym
3734 information, together with the architecture-specific prologue
3736 CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr);
3738 return func_addr <= pc && pc < prologue_end;
3741 /* We have line number info, and it looks good. */
3742 return func_addr <= pc && pc < sal.end;
3746 /* Begin overload resolution functions */
3749 remove_params (const char *demangled_name)
3755 if (demangled_name == NULL)
3758 /* First find the end of the arg list. */
3759 argp = strrchr (demangled_name, ')');
3763 /* Back up to the beginning. */
3766 while (argp-- > demangled_name)
3770 else if (*argp == '(')
3779 internal_error (__FILE__, __LINE__,
3780 "bad demangled name %s\n", demangled_name);
3781 while (argp[-1] == ' ' && argp > demangled_name)
3784 new_name = xmalloc (argp - demangled_name + 1);
3785 memcpy (new_name, demangled_name, argp - demangled_name);
3786 new_name[argp - demangled_name] = '\0';
3790 /* Helper routine for make_symbol_completion_list. */
3792 static int sym_return_val_size;
3793 static int sym_return_val_index;
3794 static struct symbol **sym_return_val;
3796 /* Test to see if the symbol specified by SYMNAME (which is already
3797 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3798 characters. If so, add it to the current completion list. */
3801 overload_list_add_symbol (struct symbol *sym, char *oload_name)
3807 /* If there is no type information, we can't do anything, so skip */
3808 if (SYMBOL_TYPE (sym) == NULL)
3811 /* skip any symbols that we've already considered. */
3812 for (i = 0; i < sym_return_val_index; ++i)
3813 if (!strcmp (SYMBOL_NAME (sym), SYMBOL_NAME (sym_return_val[i])))
3816 /* Get the demangled name without parameters */
3817 sym_name = remove_params (SYMBOL_DEMANGLED_NAME (sym));
3821 /* skip symbols that cannot match */
3822 if (strcmp (sym_name, oload_name) != 0)
3830 /* We have a match for an overload instance, so add SYM to the current list
3831 * of overload instances */
3832 if (sym_return_val_index + 3 > sym_return_val_size)
3834 newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *);
3835 sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize);
3837 sym_return_val[sym_return_val_index++] = sym;
3838 sym_return_val[sym_return_val_index] = NULL;
3841 /* Return a null-terminated list of pointers to function symbols that
3842 * match name of the supplied symbol FSYM.
3843 * This is used in finding all overloaded instances of a function name.
3844 * This has been modified from make_symbol_completion_list. */
3848 make_symbol_overload_list (struct symbol *fsym)
3850 register struct symbol *sym;
3851 register struct symtab *s;
3852 register struct partial_symtab *ps;
3853 register struct objfile *objfile;
3854 register struct block *b, *surrounding_static_block = 0;
3856 /* The name we are completing on. */
3857 char *oload_name = NULL;
3858 /* Length of name. */
3859 int oload_name_len = 0;
3861 /* Look for the symbol we are supposed to complete on. */
3863 oload_name = remove_params (SYMBOL_DEMANGLED_NAME (fsym));
3866 sym_return_val_size = 1;
3867 sym_return_val = (struct symbol **) xmalloc (2 * sizeof (struct symbol *));
3868 sym_return_val[0] = fsym;
3869 sym_return_val[1] = NULL;
3871 return sym_return_val;
3873 oload_name_len = strlen (oload_name);
3875 sym_return_val_size = 100;
3876 sym_return_val_index = 0;
3877 sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *));
3878 sym_return_val[0] = NULL;
3880 /* Look through the partial symtabs for all symbols which begin
3881 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3883 ALL_PSYMTABS (objfile, ps)
3885 struct partial_symbol **psym;
3887 /* If the psymtab's been read in we'll get it when we search
3888 through the blockvector. */
3892 for (psym = objfile->global_psymbols.list + ps->globals_offset;
3893 psym < (objfile->global_psymbols.list + ps->globals_offset
3894 + ps->n_global_syms);
3897 /* If interrupted, then quit. */
3899 /* This will cause the symbol table to be read if it has not yet been */
3900 s = PSYMTAB_TO_SYMTAB (ps);
3903 for (psym = objfile->static_psymbols.list + ps->statics_offset;
3904 psym < (objfile->static_psymbols.list + ps->statics_offset
3905 + ps->n_static_syms);
3909 /* This will cause the symbol table to be read if it has not yet been */
3910 s = PSYMTAB_TO_SYMTAB (ps);
3914 /* Search upwards from currently selected frame (so that we can
3915 complete on local vars. */
3917 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
3919 if (!BLOCK_SUPERBLOCK (b))
3921 surrounding_static_block = b; /* For elimination of dups */
3924 /* Also catch fields of types defined in this places which match our
3925 text string. Only complete on types visible from current context. */
3927 ALL_BLOCK_SYMBOLS (b, i, sym)
3929 overload_list_add_symbol (sym, oload_name);
3933 /* Go through the symtabs and check the externs and statics for
3934 symbols which match. */
3936 ALL_SYMTABS (objfile, s)
3939 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3940 ALL_BLOCK_SYMBOLS (b, i, sym)
3942 overload_list_add_symbol (sym, oload_name);
3946 ALL_SYMTABS (objfile, s)
3949 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3950 /* Don't do this block twice. */
3951 if (b == surrounding_static_block)
3953 ALL_BLOCK_SYMBOLS (b, i, sym)
3955 overload_list_add_symbol (sym, oload_name);
3961 return (sym_return_val);
3964 /* End of overload resolution functions */
3966 struct symtabs_and_lines
3967 decode_line_spec (char *string, int funfirstline)
3969 struct symtabs_and_lines sals;
3970 struct symtab_and_line cursal;
3973 error ("Empty line specification.");
3975 /* We use whatever is set as the current source line. We do not try
3976 and get a default or it will recursively call us! */
3977 cursal = get_current_source_symtab_and_line ();
3979 sals = decode_line_1 (&string, funfirstline,
3980 cursal.symtab, cursal.line,
3984 error ("Junk at end of line specification: %s", string);
3989 static char *name_of_main;
3992 set_main_name (const char *name)
3994 if (name_of_main != NULL)
3996 xfree (name_of_main);
3997 name_of_main = NULL;
4001 name_of_main = xstrdup (name);
4008 if (name_of_main != NULL)
4009 return name_of_main;
4016 _initialize_symtab (void)
4018 add_info ("variables", variables_info,
4019 "All global and static variable names, or those matching REGEXP.");
4021 add_com ("whereis", class_info, variables_info,
4022 "All global and static variable names, or those matching REGEXP.");
4024 add_info ("functions", functions_info,
4025 "All function names, or those matching REGEXP.");
4028 /* FIXME: This command has at least the following problems:
4029 1. It prints builtin types (in a very strange and confusing fashion).
4030 2. It doesn't print right, e.g. with
4031 typedef struct foo *FOO
4032 type_print prints "FOO" when we want to make it (in this situation)
4033 print "struct foo *".
4034 I also think "ptype" or "whatis" is more likely to be useful (but if
4035 there is much disagreement "info types" can be fixed). */
4036 add_info ("types", types_info,
4037 "All type names, or those matching REGEXP.");
4039 add_info ("sources", sources_info,
4040 "Source files in the program.");
4042 add_com ("rbreak", class_breakpoint, rbreak_command,
4043 "Set a breakpoint for all functions matching REGEXP.");
4047 add_com ("lf", class_info, sources_info, "Source files in the program");
4048 add_com ("lg", class_info, variables_info,
4049 "All global and static variable names, or those matching REGEXP.");
4052 /* Initialize the one built-in type that isn't language dependent... */
4053 builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
4054 "<unknown type>", (struct objfile *) NULL);